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1 Commits
bind-and-f ... build-test

Author SHA1 Message Date
Björn Busse
5357ec7f3f Remove go.mod go.sum and vendor 2021-06-15 13:12:02 +02:00
1222 changed files with 0 additions and 385817 deletions
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11
go.mod
View File

@ -1,11 +0,0 @@
module github.com/xoe-labs/ldap/v0
go 1.14
require (
github.com/caddyserver/caddy v1.0.5
github.com/coredns/coredns v1.6.9
github.com/miekg/dns v1.1.29
github.com/prometheus/client_golang v1.6.0
gopkg.in/ldap.v3 v3.1.0
)

587
go.sum
View File

@ -1,587 +0,0 @@
cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
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cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
cloud.google.com/go v0.41.0/go.mod h1:OauMR7DV8fzvZIl2qg6rkaIhD/vmgk4iwEw/h6ercmg=
contrib.go.opencensus.io/exporter/ocagent v0.4.12/go.mod h1:450APlNTSR6FrvC3CTRqYosuDstRB9un7SOx2k/9ckA=
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20
vendor/github.com/beorn7/perks/LICENSE generated vendored
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@ -1,20 +0,0 @@
Copyright (C) 2013 Blake Mizerany
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

2388
vendor/github.com/beorn7/perks/quantile/exampledata.txt generated vendored
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316
vendor/github.com/beorn7/perks/quantile/stream.go generated vendored
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@ -1,316 +0,0 @@
// Package quantile computes approximate quantiles over an unbounded data
// stream within low memory and CPU bounds.
//
// A small amount of accuracy is traded to achieve the above properties.
//
// Multiple streams can be merged before calling Query to generate a single set
// of results. This is meaningful when the streams represent the same type of
// data. See Merge and Samples.
//
// For more detailed information about the algorithm used, see:
//
// Effective Computation of Biased Quantiles over Data Streams
//
// http://www.cs.rutgers.edu/~muthu/bquant.pdf
package quantile
import (
"math"
"sort"
)
// Sample holds an observed value and meta information for compression. JSON
// tags have been added for convenience.
type Sample struct {
Value float64 `json:",string"`
Width float64 `json:",string"`
Delta float64 `json:",string"`
}
// Samples represents a slice of samples. It implements sort.Interface.
type Samples []Sample
func (a Samples) Len() int { return len(a) }
func (a Samples) Less(i, j int) bool { return a[i].Value < a[j].Value }
func (a Samples) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
type invariant func(s *stream, r float64) float64
// NewLowBiased returns an initialized Stream for low-biased quantiles
// (e.g. 0.01, 0.1, 0.5) where the needed quantiles are not known a priori, but
// error guarantees can still be given even for the lower ranks of the data
// distribution.
//
// The provided epsilon is a relative error, i.e. the true quantile of a value
// returned by a query is guaranteed to be within (1±Epsilon)*Quantile.
//
// See http://www.cs.rutgers.edu/~muthu/bquant.pdf for time, space, and error
// properties.
func NewLowBiased(epsilon float64) *Stream {
ƒ := func(s *stream, r float64) float64 {
return 2 * epsilon * r
}
return newStream(ƒ)
}
// NewHighBiased returns an initialized Stream for high-biased quantiles
// (e.g. 0.01, 0.1, 0.5) where the needed quantiles are not known a priori, but
// error guarantees can still be given even for the higher ranks of the data
// distribution.
//
// The provided epsilon is a relative error, i.e. the true quantile of a value
// returned by a query is guaranteed to be within 1-(1±Epsilon)*(1-Quantile).
//
// See http://www.cs.rutgers.edu/~muthu/bquant.pdf for time, space, and error
// properties.
func NewHighBiased(epsilon float64) *Stream {
ƒ := func(s *stream, r float64) float64 {
return 2 * epsilon * (s.n - r)
}
return newStream(ƒ)
}
// NewTargeted returns an initialized Stream concerned with a particular set of
// quantile values that are supplied a priori. Knowing these a priori reduces
// space and computation time. The targets map maps the desired quantiles to
// their absolute errors, i.e. the true quantile of a value returned by a query
// is guaranteed to be within (Quantile±Epsilon).
//
// See http://www.cs.rutgers.edu/~muthu/bquant.pdf for time, space, and error properties.
func NewTargeted(targetMap map[float64]float64) *Stream {
// Convert map to slice to avoid slow iterations on a map.
// ƒ is called on the hot path, so converting the map to a slice
// beforehand results in significant CPU savings.
targets := targetMapToSlice(targetMap)
ƒ := func(s *stream, r float64) float64 {
var m = math.MaxFloat64
var f float64
for _, t := range targets {
if t.quantile*s.n <= r {
f = (2 * t.epsilon * r) / t.quantile
} else {
f = (2 * t.epsilon * (s.n - r)) / (1 - t.quantile)
}
if f < m {
m = f
}
}
return m
}
return newStream(ƒ)
}
type target struct {
quantile float64
epsilon float64
}
func targetMapToSlice(targetMap map[float64]float64) []target {
targets := make([]target, 0, len(targetMap))
for quantile, epsilon := range targetMap {
t := target{
quantile: quantile,
epsilon: epsilon,
}
targets = append(targets, t)
}
return targets
}
// Stream computes quantiles for a stream of float64s. It is not thread-safe by
// design. Take care when using across multiple goroutines.
type Stream struct {
*stream
b Samples
sorted bool
}
func newStream(ƒ invariant) *Stream {
x := &stream{ƒ: ƒ}
return &Stream{x, make(Samples, 0, 500), true}
}
// Insert inserts v into the stream.
func (s *Stream) Insert(v float64) {
s.insert(Sample{Value: v, Width: 1})
}
func (s *Stream) insert(sample Sample) {
s.b = append(s.b, sample)
s.sorted = false
if len(s.b) == cap(s.b) {
s.flush()
}
}
// Query returns the computed qth percentiles value. If s was created with
// NewTargeted, and q is not in the set of quantiles provided a priori, Query
// will return an unspecified result.
func (s *Stream) Query(q float64) float64 {
if !s.flushed() {
// Fast path when there hasn't been enough data for a flush;
// this also yields better accuracy for small sets of data.
l := len(s.b)
if l == 0 {
return 0
}
i := int(math.Ceil(float64(l) * q))
if i > 0 {
i -= 1
}
s.maybeSort()
return s.b[i].Value
}
s.flush()
return s.stream.query(q)
}
// Merge merges samples into the underlying streams samples. This is handy when
// merging multiple streams from separate threads, database shards, etc.
//
// ATTENTION: This method is broken and does not yield correct results. The
// underlying algorithm is not capable of merging streams correctly.
func (s *Stream) Merge(samples Samples) {
sort.Sort(samples)
s.stream.merge(samples)
}
// Reset reinitializes and clears the list reusing the samples buffer memory.
func (s *Stream) Reset() {
s.stream.reset()
s.b = s.b[:0]
}
// Samples returns stream samples held by s.
func (s *Stream) Samples() Samples {
if !s.flushed() {
return s.b
}
s.flush()
return s.stream.samples()
}
// Count returns the total number of samples observed in the stream
// since initialization.
func (s *Stream) Count() int {
return len(s.b) + s.stream.count()
}
func (s *Stream) flush() {
s.maybeSort()
s.stream.merge(s.b)
s.b = s.b[:0]
}
func (s *Stream) maybeSort() {
if !s.sorted {
s.sorted = true
sort.Sort(s.b)
}
}
func (s *Stream) flushed() bool {
return len(s.stream.l) > 0
}
type stream struct {
n float64
l []Sample
ƒ invariant
}
func (s *stream) reset() {
s.l = s.l[:0]
s.n = 0
}
func (s *stream) insert(v float64) {
s.merge(Samples{{v, 1, 0}})
}
func (s *stream) merge(samples Samples) {
// TODO(beorn7): This tries to merge not only individual samples, but
// whole summaries. The paper doesn't mention merging summaries at
// all. Unittests show that the merging is inaccurate. Find out how to
// do merges properly.
var r float64
i := 0
for _, sample := range samples {
for ; i < len(s.l); i++ {
c := s.l[i]
if c.Value > sample.Value {
// Insert at position i.
s.l = append(s.l, Sample{})
copy(s.l[i+1:], s.l[i:])
s.l[i] = Sample{
sample.Value,
sample.Width,
math.Max(sample.Delta, math.Floor(s.ƒ(s, r))-1),
// TODO(beorn7): How to calculate delta correctly?
}
i++
goto inserted
}
r += c.Width
}
s.l = append(s.l, Sample{sample.Value, sample.Width, 0})
i++
inserted:
s.n += sample.Width
r += sample.Width
}
s.compress()
}
func (s *stream) count() int {
return int(s.n)
}
func (s *stream) query(q float64) float64 {
t := math.Ceil(q * s.n)
t += math.Ceil(s.ƒ(s, t) / 2)
p := s.l[0]
var r float64
for _, c := range s.l[1:] {
r += p.Width
if r+c.Width+c.Delta > t {
return p.Value
}
p = c
}
return p.Value
}
func (s *stream) compress() {
if len(s.l) < 2 {
return
}
x := s.l[len(s.l)-1]
xi := len(s.l) - 1
r := s.n - 1 - x.Width
for i := len(s.l) - 2; i >= 0; i-- {
c := s.l[i]
if c.Width+x.Width+x.Delta <= s.ƒ(s, r) {
x.Width += c.Width
s.l[xi] = x
// Remove element at i.
copy(s.l[i:], s.l[i+1:])
s.l = s.l[:len(s.l)-1]
xi -= 1
} else {
x = c
xi = i
}
r -= c.Width
}
}
func (s *stream) samples() Samples {
samples := make(Samples, len(s.l))
copy(samples, s.l)
return samples
}

21
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@ -1,21 +0,0 @@
# shell scripts should not use tabs to indent!
*.bash text eol=lf core.whitespace whitespace=tab-in-indent,trailing-space,tabwidth=2
*.sh text eol=lf core.whitespace whitespace=tab-in-indent,trailing-space,tabwidth=2
# files for systemd (shell-similar)
*.path text eol=lf core.whitespace whitespace=tab-in-indent,trailing-space,tabwidth=2
*.service text eol=lf core.whitespace whitespace=tab-in-indent,trailing-space,tabwidth=2
*.timer text eol=lf core.whitespace whitespace=tab-in-indent,trailing-space,tabwidth=2
# go fmt will enforce this, but in case a user has not called "go fmt" allow GIT to catch this:
*.go text eol=lf core.whitespace whitespace=indent-with-non-tab,trailing-space,tabwidth=4
go.mod text eol=lf
go.sum text eol=lf
*.txt text eol=lf core.whitespace whitespace=tab-in-indent,trailing-space,tabwidth=2
*.tpl text eol=lf core.whitespace whitespace=tab-in-indent,trailing-space,tabwidth=2
*.htm text eol=lf core.whitespace whitespace=tab-in-indent,trailing-space,tabwidth=2
*.html text eol=lf core.whitespace whitespace=tab-in-indent,trailing-space,tabwidth=2
*.md text eol=lf core.whitespace whitespace=tab-in-indent,trailing-space,tabwidth=2
*.yml text eol=lf core.whitespace whitespace=tab-in-indent,trailing-space,tabwidth=2
.git* text eol=auto core.whitespace whitespace=trailing-space

22
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@ -1,22 +0,0 @@
.DS_Store
Thumbs.db
_gitignore/
Vagrantfile
.vagrant/
/.idea
dist/builds/
dist/release/
error.log
access.log
/*.conf
Caddyfile
!caddyfile/
og_static/
.vscode/
*.bat

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@ -1,201 +0,0 @@
Apache License
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218
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@ -1,218 +0,0 @@
<p align="center">
<a href="https://caddyserver.com"><img src="https://user-images.githubusercontent.com/1128849/36338535-05fb646a-136f-11e8-987b-e6901e717d5a.png" alt="Caddy" width="450"></a>
</p>
<h3 align="center">Every Site on HTTPS <!-- Serve Confidently --></h3>
<p align="center">Caddy is a general-purpose HTTP/2 web server that serves HTTPS by default.</p>
<p align="center">
<a href="https://dev.azure.com/mholt-dev/Caddy/_build?definitionId=5"><img src="https://img.shields.io/azure-devops/build/mholt-dev/afec6074-9842-457f-98cf-69df6adbbf2e/5/master.svg?label=cross-platform%20tests"></a>
<a href="https://godoc.org/github.com/caddyserver/caddy"><img src="https://img.shields.io/badge/godoc-reference-blue.svg"></a>
<a href="https://goreportcard.com/report/caddyserver/caddy"><img src="https://goreportcard.com/badge/github.com/caddyserver/caddy"></a>
<br>
<a href="https://twitter.com/caddyserver" title="@caddyserver on Twitter"><img src="https://img.shields.io/badge/twitter-@caddyserver-55acee.svg" alt="@caddyserver on Twitter"></a>
<a href="https://caddy.community" title="Caddy Forum"><img src="https://img.shields.io/badge/community-forum-ff69b4.svg" alt="Caddy Forum"></a>
<a href="https://sourcegraph.com/github.com/caddyserver/caddy?badge" title="Caddy on Sourcegraph"><img src="https://sourcegraph.com/github.com/caddyserver/caddy/-/badge.svg" alt="Caddy on Sourcegraph"></a>
</p>
<p align="center">
<a href="https://caddyserver.com/download">Download</a> ·
<a href="https://caddyserver.com/docs">Documentation</a> ·
<a href="https://caddy.community">Community</a>
</p>
---
Caddy is a **production-ready** open-source web server that is fast, easy to use, and makes you more productive.
Available for Windows, Mac, Linux, BSD, Solaris, and [Android](https://github.com/caddyserver/caddy/wiki/Running-Caddy-on-Android).
<p align="center">
<b>Thanks to our special sponsor:</b>
<br><br>
<a href="https://relicabackup.com"><img src="https://caddyserver.com/resources/images/sponsors/relica.png" width="220" alt="Relica - Cross-platform file backup to the cloud, local disks, or other computers"></a>
</p>
## Menu
- [Features](#features)
- [Install](#install)
- [Quick Start](#quick-start)
- [Running in Production](#running-in-production)
- [Contributing](#contributing)
- [Donors](#donors)
- [About the Project](#about-the-project)
## Features
- **Easy configuration** with the Caddyfile
- **Automatic HTTPS** on by default (via [Let's Encrypt](https://letsencrypt.org))
- **HTTP/2** by default
- **Virtual hosting** so multiple sites just work
- Experimental **QUIC support** for cutting-edge transmissions
- TLS session ticket **key rotation** for more secure connections
- **Extensible with plugins** because a convenient web server is a helpful one
- **Runs anywhere** with **no external dependencies** (not even libc)
[See a more complete list of features built into Caddy.](https://caddyserver.com/features) On top of all those, Caddy does even more with plugins: choose which plugins you want at [download](https://caddyserver.com/download).
Altogether, Caddy can do things other web servers simply cannot do. Its features and plugins save you time and mistakes, and will cheer you up. Your Caddy instance takes care of the details for you!
<p align="center">
<b>Powered by</b>
<br>
<a href="https://github.com/mholt/certmagic"><img src="https://user-images.githubusercontent.com/1128849/49704830-49d37200-fbd5-11e8-8385-767e0cd033c3.png" alt="CertMagic" width="250"></a>
</p>
## Install
Caddy binaries have no dependencies and are available for every platform. Get Caddy any of these ways:
- **[Download page](https://caddyserver.com/download)** (RECOMMENDED) allows you to customize your build in the browser
- **[Latest release](https://github.com/caddyserver/caddy/releases/latest)** for pre-built, vanilla binaries
- **[AWS Marketplace](https://aws.amazon.com/marketplace/pp/B07J1WNK75?qid=1539015041932&sr=0-1&ref_=srh_res_product_title&cl_spe=C)** makes it easy to deploy directly to your cloud environment. <a href="https://aws.amazon.com/marketplace/pp/B07J1WNK75?qid=1539015041932&sr=0-1&ref_=srh_res_product_title&cl_spe=C" target="_blank">
<img src="https://s3.amazonaws.com/cloudformation-examples/cloudformation-launch-stack.png" alt="Get Caddy on the AWS Marketplace" height="25"/></a>
## Build
To build from source you need **[Git](https://git-scm.com/downloads)** and **[Go](https://golang.org/doc/install)** (1.13 or newer).
**To build Caddy without plugins:**
- Run `go get github.com/caddyserver/caddy/caddy`
Caddy will be installed to your `$GOPATH/bin` folder.
With these instructions, the binary will not have embedded version information (see [golang/go#29228](https://github.com/golang/go/issues/29228)), but it is fine for a quick start.
**To build Caddy with plugins (and with version information):**
There is no need to modify the Caddy code to build it with plugins. We will create a simple Go module with our own `main()` that you can use to make custom Caddy builds.
- Create a new folder anywhere and within create a Go file (with an extension of `.go`, such as `main.go`) with the contents below, adjusting to import the plugins you want to include:
```go
package main
import (
"github.com/caddyserver/caddy/caddy/caddymain"
// plug in plugins here, for example:
// _ "import/path/here"
)
func main() {
// optional: disable telemetry
// caddymain.EnableTelemetry = false
caddymain.Run()
}
```
3. `go mod init caddy`
4. Run `go get github.com/caddyserver/caddy`
5. `go install` will then create your binary at `$GOPATH/bin`, or `go build` will put it in the current directory.
**To install Caddy's source code for development:**
- Run `git clone https://github.com/caddyserver/caddy.git` in any folder (doesn't have to be in GOPATH).
You can make changes to the source code from that clone and checkout any commit or tag you wish to develop on.
When building from source, telemetry is enabled by default. You can disable it by changing `caddymain.EnableTelemetry = false` in run.go, or use the `-disabled-metrics` flag at runtime to disable only certain metrics.
## Quick Start
To serve static files from the current working directory, run:
```
caddy
```
Caddy's default port is 2015, so open your browser to [http://localhost:2015](http://localhost:2015).
### Go from 0 to HTTPS in 5 seconds
If the `caddy` binary has permission to bind to low ports and your domain name's DNS records point to the machine you're on:
```
caddy -host example.com
```
This command serves static files from the current directory over HTTPS. Certificates are automatically obtained and renewed for you! Caddy is also automatically configuring ports 80 and 443 for you, and redirecting HTTP to HTTPS. Cool, huh?
### Customizing your site
To customize how your site is served, create a file named Caddyfile by your site and paste this into it:
```plain
localhost
push
browse
websocket /echo cat
ext .html
log /var/log/access.log
proxy /api 127.0.0.1:7005
header /api Access-Control-Allow-Origin *
```
When you run `caddy` in that directory, it will automatically find and use that Caddyfile.
This simple file enables server push (via Link headers), allows directory browsing (for folders without an index file), hosts a WebSocket echo server at /echo, serves clean URLs, logs requests to an access log, proxies all API requests to a backend on port 7005, and adds the coveted `Access-Control-Allow-Origin: *` header for all responses from the API.
Wow! Caddy can do a lot with just a few lines.
### Doing more with Caddy
To host multiple sites and do more with the Caddyfile, please see the [Caddyfile tutorial](https://caddyserver.com/tutorial/caddyfile).
Sites with qualifying hostnames are served over [HTTPS by default](https://caddyserver.com/docs/automatic-https).
Caddy has a nice little command line interface. Run `caddy -h` to view basic help or see the [CLI documentation](https://caddyserver.com/docs/cli) for details.
## Running in Production
Caddy is production-ready if you find it to be a good fit for your site and workflow.
**Running as root:** We advise against this. You can still listen on ports < 1024 on Linux using setcap like so: `sudo setcap cap_net_bind_service=+ep ./caddy`
The Caddy project does not officially maintain any system-specific integrations nor suggest how to administer your own system. But your download file includes [unofficial resources](https://github.com/caddyserver/caddy/tree/master/dist/init) contributed by the community that you may find helpful for running Caddy in production.
How you choose to run Caddy is up to you. Many users are satisfied with `nohup caddy &`. Others use `screen`. Users who need Caddy to come back up after reboots either do so in the script that caused the reboot, add a command to an init script, or configure a service with their OS.
If you have questions or concerns about Caddy' underlying crypto implementations, consult Go's [crypto packages](https://golang.org/pkg/crypto), starting with their documentation, then issues, then the code itself; as Caddy uses mainly those libraries.
## Contributing
**[Join our forum](https://caddy.community) where you can chat with other Caddy users and developers!** To get familiar with the code base, try [Caddy code search on Sourcegraph](https://sourcegraph.com/github.com/caddyserver/caddy/)!
Please see our [contributing guidelines](https://github.com/caddyserver/caddy/blob/master/.github/CONTRIBUTING.md) for instructions. If you want to write a plugin, check out the [developer wiki](https://github.com/caddyserver/caddy/wiki).
We use GitHub issues and pull requests only for discussing bug reports and the development of specific changes. We welcome all other topics on the [forum](https://caddy.community)!
If you want to contribute to the documentation, please [submit an issue](https://github.com/caddyserver/caddy/issues/new) describing the change that should be made.
### Good First Issue
If you are looking for somewhere to start and would like to help out by working on an existing issue, take a look at our [`Good First Issue`](https://github.com/caddyserver/caddy/issues?q=is%3Aissue+is%3Aopen+label%3A%22good+first+issue%22) tag
Thanks for making Caddy -- and the Web -- better!
## Donors
- [DigitalOcean](https://m.do.co/c/6d7bdafccf96) is hosting the Caddy project.
- [DNSimple](https://dnsimple.link/resolving-caddy) provides DNS services for Caddy's sites.
- [DNS Spy](https://dnsspy.io) keeps an eye on Caddy's DNS properties.
We thank them for their services. **If you want to help keep Caddy free, please [become a sponsor](https://github.com/sponsors/mholt)!**
## About the Project
Caddy was born out of the need for a "batteries-included" web server that runs anywhere and doesn't have to take its configuration with it. Caddy took inspiration from [spark](https://github.com/rif/spark), [nginx](https://github.com/nginx/nginx), lighttpd,
[Websocketd](https://github.com/joewalnes/websocketd) and [Vagrant](https://www.vagrantup.com/), which provides a pleasant mixture of features from each of them.
**The name "Caddy" is trademarked:** The name of the software is "Caddy", not "Caddy Server" or "CaddyServer". Please call it "Caddy" or, if you wish to clarify, "the Caddy web server". See [brand guidelines](https://caddyserver.com/brand). Caddy is a registered trademark of Light Code Labs, LLC.
*Author on Twitter: [@mholt6](https://twitter.com/mholt6)*

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// Copyright 2015 Light Code Labs, LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package caddy
import (
"os"
"path/filepath"
"runtime"
)
// AssetsPath returns the path to the folder
// where the application may store data. If
// CADDYPATH env variable is set, that value
// is used. Otherwise, the path is the result
// of evaluating "$HOME/.caddy".
func AssetsPath() string {
if caddyPath := os.Getenv("CADDYPATH"); caddyPath != "" {
return caddyPath
}
return filepath.Join(userHomeDir(), ".caddy")
}
// userHomeDir returns the user's home directory according to
// environment variables.
//
// Credit: http://stackoverflow.com/a/7922977/1048862
func userHomeDir() string {
if runtime.GOOS == "windows" {
home := os.Getenv("HOMEDRIVE") + os.Getenv("HOMEPATH")
if home == "" {
home = os.Getenv("USERPROFILE")
}
return home
}
return os.Getenv("HOME")
}

88
vendor/github.com/caddyserver/caddy/azure-pipelines.yml generated vendored
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@ -1,88 +0,0 @@
# Mutilated beyond recognition from the example at:
# https://docs.microsoft.com/azure/devops/pipelines/languages/go
trigger:
- master
strategy:
matrix:
linux:
imageName: ubuntu-16.04
gorootDir: /usr/local
mac:
imageName: macos-10.13
gorootDir: /usr/local
windows:
imageName: windows-2019
gorootDir: C:\
pool:
vmImage: $(imageName)
variables:
GOROOT: $(gorootDir)/go
GOPATH: $(system.defaultWorkingDirectory)/gopath
GOBIN: $(GOPATH)/bin
modulePath: '$(GOPATH)/src/github.com/$(build.repository.name)'
# TODO: modules should be the default in Go 1.13, so this won't be needed
GO111MODULE: on
steps:
- bash: |
latestGo=$(curl "https://golang.org/VERSION?m=text")
echo "##vso[task.setvariable variable=LATEST_GO]$latestGo"
echo "Latest Go version: $latestGo"
displayName: "Get latest Go version"
- bash: |
sudo rm -f $(which go)
echo '##vso[task.prependpath]$(GOBIN)'
echo '##vso[task.prependpath]$(GOROOT)/bin'
mkdir -p '$(modulePath)'
shopt -s extglob
shopt -s dotglob
mv !(gopath) '$(modulePath)'
displayName: Remove old Go, set GOBIN/GOROOT, and move project into GOPATH
# Install Go (this varies by platform)
- bash: |
wget "https://dl.google.com/go/$(LATEST_GO).linux-amd64.tar.gz"
sudo tar -C $(gorootDir) -xzf "$(LATEST_GO).linux-amd64.tar.gz"
condition: eq( variables['Agent.OS'], 'Linux' )
displayName: Install Go on Linux
- bash: |
wget "https://dl.google.com/go/$(LATEST_GO).darwin-amd64.tar.gz"
sudo tar -C $(gorootDir) -xzf "$(LATEST_GO).darwin-amd64.tar.gz"
condition: eq( variables['Agent.OS'], 'Darwin' )
displayName: Install Go on macOS
- powershell: |
Write-Host "Downloading Go... (please be patient, I am very slow)"
(New-Object System.Net.WebClient).DownloadFile("https://dl.google.com/go/$(LATEST_GO).windows-amd64.zip", "$(LATEST_GO).windows-amd64.zip")
Write-Host "Extracting Go... (I'm slow too)"
Expand-Archive "$(LATEST_GO).windows-amd64.zip" -DestinationPath "$(gorootDir)"
condition: eq( variables['Agent.OS'], 'Windows_NT' )
displayName: Install Go on Windows
# TODO: When this issue is fixed, replace with installer script:
# https://github.com/golangci/golangci-lint/issues/472
- script: go get -v github.com/golangci/golangci-lint/cmd/golangci-lint
displayName: Install golangci-lint
- bash: |
printf "Using go at: $(which go)\n"
printf "Go version: $(go version)\n"
printf "\n\nGo environment:\n\n"
go env
printf "\n\nSystem environment:\n\n"
env
displayName: Print Go version and environment
- script: |
go get -v -t -d ./...
golangci-lint run -E gofmt -E goimports -E misspell
go test -race ./...
workingDirectory: '$(modulePath)'
displayName: Run tests

1036
vendor/github.com/caddyserver/caddy/caddy.go generated vendored
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File diff suppressed because it is too large Load Diff

260
vendor/github.com/caddyserver/caddy/caddyfile/dispenser.go generated vendored
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@ -1,260 +0,0 @@
// Copyright 2015 Light Code Labs, LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package caddyfile
import (
"errors"
"fmt"
"io"
"strings"
)
// Dispenser is a type that dispenses tokens, similarly to a lexer,
// except that it can do so with some notion of structure and has
// some really convenient methods.
type Dispenser struct {
filename string
tokens []Token
cursor int
nesting int
}
// NewDispenser returns a Dispenser, ready to use for parsing the given input.
func NewDispenser(filename string, input io.Reader) Dispenser {
tokens, _ := allTokens(input) // ignoring error because nothing to do with it
return Dispenser{
filename: filename,
tokens: tokens,
cursor: -1,
}
}
// NewDispenserTokens returns a Dispenser filled with the given tokens.
func NewDispenserTokens(filename string, tokens []Token) Dispenser {
return Dispenser{
filename: filename,
tokens: tokens,
cursor: -1,
}
}
// Next loads the next token. Returns true if a token
// was loaded; false otherwise. If false, all tokens
// have been consumed.
func (d *Dispenser) Next() bool {
if d.cursor < len(d.tokens)-1 {
d.cursor++
return true
}
return false
}
// NextArg loads the next token if it is on the same
// line. Returns true if a token was loaded; false
// otherwise. If false, all tokens on the line have
// been consumed. It handles imported tokens correctly.
func (d *Dispenser) NextArg() bool {
if d.cursor < 0 {
d.cursor++
return true
}
if d.cursor >= len(d.tokens) {
return false
}
if d.cursor < len(d.tokens)-1 &&
d.tokens[d.cursor].File == d.tokens[d.cursor+1].File &&
d.tokens[d.cursor].Line+d.numLineBreaks(d.cursor) == d.tokens[d.cursor+1].Line {
d.cursor++
return true
}
return false
}
// NextLine loads the next token only if it is not on the same
// line as the current token, and returns true if a token was
// loaded; false otherwise. If false, there is not another token
// or it is on the same line. It handles imported tokens correctly.
func (d *Dispenser) NextLine() bool {
if d.cursor < 0 {
d.cursor++
return true
}
if d.cursor >= len(d.tokens) {
return false
}
if d.cursor < len(d.tokens)-1 &&
(d.tokens[d.cursor].File != d.tokens[d.cursor+1].File ||
d.tokens[d.cursor].Line+d.numLineBreaks(d.cursor) < d.tokens[d.cursor+1].Line) {
d.cursor++
return true
}
return false
}
// NextBlock can be used as the condition of a for loop
// to load the next token as long as it opens a block or
// is already in a block. It returns true if a token was
// loaded, or false when the block's closing curly brace
// was loaded and thus the block ended. Nested blocks are
// not supported.
func (d *Dispenser) NextBlock() bool {
if d.nesting > 0 {
d.Next()
if d.Val() == "}" {
d.nesting--
return false
}
return true
}
if !d.NextArg() { // block must open on same line
return false
}
if d.Val() != "{" {
d.cursor-- // roll back if not opening brace
return false
}
d.Next()
if d.Val() == "}" {
// Open and then closed right away
return false
}
d.nesting++
return true
}
// Val gets the text of the current token. If there is no token
// loaded, it returns empty string.
func (d *Dispenser) Val() string {
if d.cursor < 0 || d.cursor >= len(d.tokens) {
return ""
}
return d.tokens[d.cursor].Text
}
// Line gets the line number of the current token. If there is no token
// loaded, it returns 0.
func (d *Dispenser) Line() int {
if d.cursor < 0 || d.cursor >= len(d.tokens) {
return 0
}
return d.tokens[d.cursor].Line
}
// File gets the filename of the current token. If there is no token loaded,
// it returns the filename originally given when parsing started.
func (d *Dispenser) File() string {
if d.cursor < 0 || d.cursor >= len(d.tokens) {
return d.filename
}
if tokenFilename := d.tokens[d.cursor].File; tokenFilename != "" {
return tokenFilename
}
return d.filename
}
// Args is a convenience function that loads the next arguments
// (tokens on the same line) into an arbitrary number of strings
// pointed to in targets. If there are fewer tokens available
// than string pointers, the remaining strings will not be changed
// and false will be returned. If there were enough tokens available
// to fill the arguments, then true will be returned.
func (d *Dispenser) Args(targets ...*string) bool {
enough := true
for i := 0; i < len(targets); i++ {
if !d.NextArg() {
enough = false
break
}
*targets[i] = d.Val()
}
return enough
}
// RemainingArgs loads any more arguments (tokens on the same line)
// into a slice and returns them. Open curly brace tokens also indicate
// the end of arguments, and the curly brace is not included in
// the return value nor is it loaded.
func (d *Dispenser) RemainingArgs() []string {
var args []string
for d.NextArg() {
if d.Val() == "{" {
d.cursor--
break
}
args = append(args, d.Val())
}
return args
}
// ArgErr returns an argument error, meaning that another
// argument was expected but not found. In other words,
// a line break or open curly brace was encountered instead of
// an argument.
func (d *Dispenser) ArgErr() error {
if d.Val() == "{" {
return d.Err("Unexpected token '{', expecting argument")
}
return d.Errf("Wrong argument count or unexpected line ending after '%s'", d.Val())
}
// SyntaxErr creates a generic syntax error which explains what was
// found and what was expected.
func (d *Dispenser) SyntaxErr(expected string) error {
msg := fmt.Sprintf("%s:%d - Syntax error: Unexpected token '%s', expecting '%s'", d.File(), d.Line(), d.Val(), expected)
return errors.New(msg)
}
// EOFErr returns an error indicating that the dispenser reached
// the end of the input when searching for the next token.
func (d *Dispenser) EOFErr() error {
return d.Errf("Unexpected EOF")
}
// Err generates a custom parse-time error with a message of msg.
func (d *Dispenser) Err(msg string) error {
msg = fmt.Sprintf("%s:%d - Error during parsing: %s", d.File(), d.Line(), msg)
return errors.New(msg)
}
// Errf is like Err, but for formatted error messages
func (d *Dispenser) Errf(format string, args ...interface{}) error {
return d.Err(fmt.Sprintf(format, args...))
}
// numLineBreaks counts how many line breaks are in the token
// value given by the token index tknIdx. It returns 0 if the
// token does not exist or there are no line breaks.
func (d *Dispenser) numLineBreaks(tknIdx int) int {
if tknIdx < 0 || tknIdx >= len(d.tokens) {
return 0
}
return strings.Count(d.tokens[tknIdx].Text, "\n")
}
// isNewLine determines whether the current token is on a different
// line (higher line number) than the previous token. It handles imported
// tokens correctly. If there isn't a previous token, it returns true.
func (d *Dispenser) isNewLine() bool {
if d.cursor < 1 {
return true
}
if d.cursor > len(d.tokens)-1 {
return false
}
return d.tokens[d.cursor-1].File != d.tokens[d.cursor].File ||
d.tokens[d.cursor-1].Line+d.numLineBreaks(d.cursor-1) < d.tokens[d.cursor].Line
}

198
vendor/github.com/caddyserver/caddy/caddyfile/json.go generated vendored
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@ -1,198 +0,0 @@
// Copyright 2015 Light Code Labs, LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package caddyfile
import (
"bytes"
"encoding/json"
"fmt"
"sort"
"strconv"
"strings"
)
const filename = "Caddyfile"
// ToJSON converts caddyfile to its JSON representation.
func ToJSON(caddyfile []byte) ([]byte, error) {
var j EncodedCaddyfile
serverBlocks, err := Parse(filename, bytes.NewReader(caddyfile), nil)
if err != nil {
return nil, err
}
for _, sb := range serverBlocks {
block := EncodedServerBlock{
Keys: sb.Keys,
Body: [][]interface{}{},
}
// Extract directives deterministically by sorting them
var directives = make([]string, len(sb.Tokens))
for dir := range sb.Tokens {
directives = append(directives, dir)
}
sort.Strings(directives)
// Convert each directive's tokens into our JSON structure
for _, dir := range directives {
disp := NewDispenserTokens(filename, sb.Tokens[dir])
for disp.Next() {
block.Body = append(block.Body, constructLine(&disp))
}
}
// tack this block onto the end of the list
j = append(j, block)
}
result, err := json.Marshal(j)
if err != nil {
return nil, err
}
return result, nil
}
// constructLine transforms tokens into a JSON-encodable structure;
// but only one line at a time, to be used at the top-level of
// a server block only (where the first token on each line is a
// directive) - not to be used at any other nesting level.
func constructLine(d *Dispenser) []interface{} {
var args []interface{}
args = append(args, d.Val())
for d.NextArg() {
if d.Val() == "{" {
args = append(args, constructBlock(d))
continue
}
args = append(args, d.Val())
}
return args
}
// constructBlock recursively processes tokens into a
// JSON-encodable structure. To be used in a directive's
// block. Goes to end of block.
func constructBlock(d *Dispenser) [][]interface{} {
block := [][]interface{}{}
for d.Next() {
if d.Val() == "}" {
break
}
block = append(block, constructLine(d))
}
return block
}
// FromJSON converts JSON-encoded jsonBytes to Caddyfile text
func FromJSON(jsonBytes []byte) ([]byte, error) {
var j EncodedCaddyfile
var result string
err := json.Unmarshal(jsonBytes, &j)
if err != nil {
return nil, err
}
for sbPos, sb := range j {
if sbPos > 0 {
result += "\n\n"
}
for i, key := range sb.Keys {
if i > 0 {
result += ", "
}
//result += standardizeScheme(key)
result += key
}
result += jsonToText(sb.Body, 1)
}
return []byte(result), nil
}
// jsonToText recursively transforms a scope of JSON into plain
// Caddyfile text.
func jsonToText(scope interface{}, depth int) string {
var result string
switch val := scope.(type) {
case string:
if strings.ContainsAny(val, "\" \n\t\r") {
result += `"` + strings.Replace(val, "\"", "\\\"", -1) + `"`
} else {
result += val
}
case int:
result += strconv.Itoa(val)
case float64:
result += fmt.Sprintf("%v", val)
case bool:
result += fmt.Sprintf("%t", val)
case [][]interface{}:
result += " {\n"
for _, arg := range val {
result += strings.Repeat("\t", depth) + jsonToText(arg, depth+1) + "\n"
}
result += strings.Repeat("\t", depth-1) + "}"
case []interface{}:
for i, v := range val {
if block, ok := v.([]interface{}); ok {
result += "{\n"
for _, arg := range block {
result += strings.Repeat("\t", depth) + jsonToText(arg, depth+1) + "\n"
}
result += strings.Repeat("\t", depth-1) + "}"
continue
}
result += jsonToText(v, depth)
if i < len(val)-1 {
result += " "
}
}
}
return result
}
// TODO: Will this function come in handy somewhere else?
/*
// standardizeScheme turns an address like host:https into https://host,
// or "host:" into "host".
func standardizeScheme(addr string) string {
if hostname, port, err := net.SplitHostPort(addr); err == nil {
if port == "http" || port == "https" {
addr = port + "://" + hostname
}
}
return strings.TrimSuffix(addr, ":")
}
*/
// EncodedCaddyfile encapsulates a slice of EncodedServerBlocks.
type EncodedCaddyfile []EncodedServerBlock
// EncodedServerBlock represents a server block ripe for encoding.
type EncodedServerBlock struct {
Keys []string `json:"keys"`
Body [][]interface{} `json:"body"`
}

150
vendor/github.com/caddyserver/caddy/caddyfile/lexer.go generated vendored
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@ -1,150 +0,0 @@
// Copyright 2015 Light Code Labs, LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package caddyfile
import (
"bufio"
"io"
"unicode"
)
type (
// lexer is a utility which can get values, token by
// token, from a Reader. A token is a word, and tokens
// are separated by whitespace. A word can be enclosed
// in quotes if it contains whitespace.
lexer struct {
reader *bufio.Reader
token Token
line int
}
// Token represents a single parsable unit.
Token struct {
File string
Line int
Text string
}
)
// load prepares the lexer to scan an input for tokens.
// It discards any leading byte order mark.
func (l *lexer) load(input io.Reader) error {
l.reader = bufio.NewReader(input)
l.line = 1
// discard byte order mark, if present
firstCh, _, err := l.reader.ReadRune()
if err != nil {
return err
}
if firstCh != 0xFEFF {
err := l.reader.UnreadRune()
if err != nil {
return err
}
}
return nil
}
// next loads the next token into the lexer.
// A token is delimited by whitespace, unless
// the token starts with a quotes character (")
// in which case the token goes until the closing
// quotes (the enclosing quotes are not included).
// Inside quoted strings, quotes may be escaped
// with a preceding \ character. No other chars
// may be escaped. The rest of the line is skipped
// if a "#" character is read in. Returns true if
// a token was loaded; false otherwise.
func (l *lexer) next() bool {
var val []rune
var comment, quoted, escaped bool
makeToken := func() bool {
l.token.Text = string(val)
return true
}
for {
ch, _, err := l.reader.ReadRune()
if err != nil {
if len(val) > 0 {
return makeToken()
}
if err == io.EOF {
return false
}
panic(err)
}
if quoted {
if !escaped {
if ch == '\\' {
escaped = true
continue
} else if ch == '"' {
quoted = false
return makeToken()
}
}
if ch == '\n' {
l.line++
}
if escaped {
// only escape quotes
if ch != '"' {
val = append(val, '\\')
}
}
val = append(val, ch)
escaped = false
continue
}
if unicode.IsSpace(ch) {
if ch == '\r' {
continue
}
if ch == '\n' {
l.line++
comment = false
}
if len(val) > 0 {
return makeToken()
}
continue
}
if ch == '#' {
comment = true
}
if comment {
continue
}
if len(val) == 0 {
l.token = Token{Line: l.line}
if ch == '"' {
quoted = true
continue
}
}
val = append(val, ch)
}
}

490
vendor/github.com/caddyserver/caddy/caddyfile/parse.go generated vendored
View File

@ -1,490 +0,0 @@
// Copyright 2015 Light Code Labs, LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package caddyfile
import (
"io"
"log"
"os"
"path/filepath"
"strings"
)
// Parse parses the input just enough to group tokens, in
// order, by server block. No further parsing is performed.
// Server blocks are returned in the order in which they appear.
// Directives that do not appear in validDirectives will cause
// an error. If you do not want to check for valid directives,
// pass in nil instead.
func Parse(filename string, input io.Reader, validDirectives []string) ([]ServerBlock, error) {
p := parser{Dispenser: NewDispenser(filename, input), validDirectives: validDirectives}
return p.parseAll()
}
// allTokens lexes the entire input, but does not parse it.
// It returns all the tokens from the input, unstructured
// and in order.
func allTokens(input io.Reader) ([]Token, error) {
l := new(lexer)
err := l.load(input)
if err != nil {
return nil, err
}
var tokens []Token
for l.next() {
tokens = append(tokens, l.token)
}
return tokens, nil
}
type parser struct {
Dispenser
block ServerBlock // current server block being parsed
validDirectives []string // a directive must be valid or it's an error
eof bool // if we encounter a valid EOF in a hard place
definedSnippets map[string][]Token
}
func (p *parser) parseAll() ([]ServerBlock, error) {
var blocks []ServerBlock
for p.Next() {
err := p.parseOne()
if err != nil {
return blocks, err
}
if len(p.block.Keys) > 0 {
blocks = append(blocks, p.block)
}
}
return blocks, nil
}
func (p *parser) parseOne() error {
p.block = ServerBlock{Tokens: make(map[string][]Token)}
return p.begin()
}
func (p *parser) begin() error {
if len(p.tokens) == 0 {
return nil
}
err := p.addresses()
if err != nil {
return err
}
if p.eof {
// this happens if the Caddyfile consists of only
// a line of addresses and nothing else
return nil
}
if ok, name := p.isSnippet(); ok {
if p.definedSnippets == nil {
p.definedSnippets = map[string][]Token{}
}
if _, found := p.definedSnippets[name]; found {
return p.Errf("redeclaration of previously declared snippet %s", name)
}
// consume all tokens til matched close brace
tokens, err := p.snippetTokens()
if err != nil {
return err
}
p.definedSnippets[name] = tokens
// empty block keys so we don't save this block as a real server.
p.block.Keys = nil
return nil
}
return p.blockContents()
}
func (p *parser) addresses() error {
var expectingAnother bool
for {
tkn := replaceEnvVars(p.Val())
// special case: import directive replaces tokens during parse-time
if tkn == "import" && p.isNewLine() {
err := p.doImport()
if err != nil {
return err
}
continue
}
// Open brace definitely indicates end of addresses
if tkn == "{" {
if expectingAnother {
return p.Errf("Expected another address but had '%s' - check for extra comma", tkn)
}
break
}
if tkn != "" { // empty token possible if user typed ""
// Trailing comma indicates another address will follow, which
// may possibly be on the next line
if tkn[len(tkn)-1] == ',' {
tkn = tkn[:len(tkn)-1]
expectingAnother = true
} else {
expectingAnother = false // but we may still see another one on this line
}
p.block.Keys = append(p.block.Keys, tkn)
}
// Advance token and possibly break out of loop or return error
hasNext := p.Next()
if expectingAnother && !hasNext {
return p.EOFErr()
}
if !hasNext {
p.eof = true
break // EOF
}
if !expectingAnother && p.isNewLine() {
break
}
}
return nil
}
func (p *parser) blockContents() error {
errOpenCurlyBrace := p.openCurlyBrace()
if errOpenCurlyBrace != nil {
// single-server configs don't need curly braces
p.cursor--
}
err := p.directives()
if err != nil {
return err
}
// Only look for close curly brace if there was an opening
if errOpenCurlyBrace == nil {
err = p.closeCurlyBrace()
if err != nil {
return err
}
}
return nil
}
// directives parses through all the lines for directives
// and it expects the next token to be the first
// directive. It goes until EOF or closing curly brace
// which ends the server block.
func (p *parser) directives() error {
for p.Next() {
// end of server block
if p.Val() == "}" {
break
}
// special case: import directive replaces tokens during parse-time
if p.Val() == "import" {
err := p.doImport()
if err != nil {
return err
}
p.cursor-- // cursor is advanced when we continue, so roll back one more
continue
}
// normal case: parse a directive on this line
if err := p.directive(); err != nil {
return err
}
}
return nil
}
// doImport swaps out the import directive and its argument
// (a total of 2 tokens) with the tokens in the specified file
// or globbing pattern. When the function returns, the cursor
// is on the token before where the import directive was. In
// other words, call Next() to access the first token that was
// imported.
func (p *parser) doImport() error {
// syntax checks
if !p.NextArg() {
return p.ArgErr()
}
importPattern := replaceEnvVars(p.Val())
if importPattern == "" {
return p.Err("Import requires a non-empty filepath")
}
if p.NextArg() {
return p.Err("Import takes only one argument (glob pattern or file)")
}
// splice out the import directive and its argument (2 tokens total)
tokensBefore := p.tokens[:p.cursor-1]
tokensAfter := p.tokens[p.cursor+1:]
var importedTokens []Token
// first check snippets. That is a simple, non-recursive replacement
if p.definedSnippets != nil && p.definedSnippets[importPattern] != nil {
importedTokens = p.definedSnippets[importPattern]
} else {
// make path relative to the file of the _token_ being processed rather
// than current working directory (issue #867) and then use glob to get
// list of matching filenames
absFile, err := filepath.Abs(p.Dispenser.File())
if err != nil {
return p.Errf("Failed to get absolute path of file: %s: %v", p.Dispenser.filename, err)
}
var matches []string
var globPattern string
if !filepath.IsAbs(importPattern) {
globPattern = filepath.Join(filepath.Dir(absFile), importPattern)
} else {
globPattern = importPattern
}
if strings.Count(globPattern, "*") > 1 || strings.Count(globPattern, "?") > 1 ||
(strings.Contains(globPattern, "[") && strings.Contains(globPattern, "]")) {
// See issue #2096 - a pattern with many glob expansions can hang for too long
return p.Errf("Glob pattern may only contain one wildcard (*), but has others: %s", globPattern)
}
matches, err = filepath.Glob(globPattern)
if err != nil {
return p.Errf("Failed to use import pattern %s: %v", importPattern, err)
}
if len(matches) == 0 {
if strings.ContainsAny(globPattern, "*?[]") {
log.Printf("[WARNING] No files matching import glob pattern: %s", importPattern)
} else {
return p.Errf("File to import not found: %s", importPattern)
}
}
// collect all the imported tokens
for _, importFile := range matches {
newTokens, err := p.doSingleImport(importFile)
if err != nil {
return err
}
importedTokens = append(importedTokens, newTokens...)
}
}
// splice the imported tokens in the place of the import statement
// and rewind cursor so Next() will land on first imported token
p.tokens = append(tokensBefore, append(importedTokens, tokensAfter...)...)
p.cursor--
return nil
}
// doSingleImport lexes the individual file at importFile and returns
// its tokens or an error, if any.
func (p *parser) doSingleImport(importFile string) ([]Token, error) {
file, err := os.Open(importFile)
if err != nil {
return nil, p.Errf("Could not import %s: %v", importFile, err)
}
defer file.Close()
if info, err := file.Stat(); err != nil {
return nil, p.Errf("Could not import %s: %v", importFile, err)
} else if info.IsDir() {
return nil, p.Errf("Could not import %s: is a directory", importFile)
}
importedTokens, err := allTokens(file)
if err != nil {
return nil, p.Errf("Could not read tokens while importing %s: %v", importFile, err)
}
// Tack the file path onto these tokens so errors show the imported file's name
// (we use full, absolute path to avoid bugs: issue #1892)
filename, err := filepath.Abs(importFile)
if err != nil {
return nil, p.Errf("Failed to get absolute path of file: %s: %v", p.Dispenser.filename, err)
}
for i := 0; i < len(importedTokens); i++ {
importedTokens[i].File = filename
}
return importedTokens, nil
}
// directive collects tokens until the directive's scope
// closes (either end of line or end of curly brace block).
// It expects the currently-loaded token to be a directive
// (or } that ends a server block). The collected tokens
// are loaded into the current server block for later use
// by directive setup functions.
func (p *parser) directive() error {
dir := replaceEnvVars(p.Val())
nesting := 0
// TODO: More helpful error message ("did you mean..." or "maybe you need to install its server type")
if !p.validDirective(dir) {
return p.Errf("Unknown directive '%s'", dir)
}
// The directive itself is appended as a relevant token
p.block.Tokens[dir] = append(p.block.Tokens[dir], p.tokens[p.cursor])
for p.Next() {
if p.Val() == "{" {
nesting++
} else if p.isNewLine() && nesting == 0 {
p.cursor-- // read too far
break
} else if p.Val() == "}" && nesting > 0 {
nesting--
} else if p.Val() == "}" && nesting == 0 {
return p.Err("Unexpected '}' because no matching opening brace")
} else if p.Val() == "import" && p.isNewLine() {
if err := p.doImport(); err != nil {
return err
}
p.cursor-- // cursor is advanced when we continue, so roll back one more
continue
}
p.tokens[p.cursor].Text = replaceEnvVars(p.tokens[p.cursor].Text)
p.block.Tokens[dir] = append(p.block.Tokens[dir], p.tokens[p.cursor])
}
if nesting > 0 {
return p.EOFErr()
}
return nil
}
// openCurlyBrace expects the current token to be an
// opening curly brace. This acts like an assertion
// because it returns an error if the token is not
// a opening curly brace. It does NOT advance the token.
func (p *parser) openCurlyBrace() error {
if p.Val() != "{" {
return p.SyntaxErr("{")
}
return nil
}
// closeCurlyBrace expects the current token to be
// a closing curly brace. This acts like an assertion
// because it returns an error if the token is not
// a closing curly brace. It does NOT advance the token.
func (p *parser) closeCurlyBrace() error {
if p.Val() != "}" {
return p.SyntaxErr("}")
}
return nil
}
// validDirective returns true if dir is in p.validDirectives.
func (p *parser) validDirective(dir string) bool {
if p.validDirectives == nil {
return true
}
for _, d := range p.validDirectives {
if d == dir {
return true
}
}
return false
}
// replaceEnvVars replaces environment variables that appear in the token
// and understands both the $UNIX and %WINDOWS% syntaxes.
func replaceEnvVars(s string) string {
s = replaceEnvReferences(s, "{%", "%}")
s = replaceEnvReferences(s, "{$", "}")
return s
}
// replaceEnvReferences performs the actual replacement of env variables
// in s, given the placeholder start and placeholder end strings.
func replaceEnvReferences(s, refStart, refEnd string) string {
index := strings.Index(s, refStart)
for index != -1 {
endIndex := strings.Index(s[index:], refEnd)
if endIndex == -1 {
break
}
endIndex += index
if endIndex > index+len(refStart) {
ref := s[index : endIndex+len(refEnd)]
s = strings.Replace(s, ref, os.Getenv(ref[len(refStart):len(ref)-len(refEnd)]), -1)
} else {
return s
}
index = strings.Index(s, refStart)
}
return s
}
// ServerBlock associates any number of keys (usually addresses
// of some sort) with tokens (grouped by directive name).
type ServerBlock struct {
Keys []string
Tokens map[string][]Token
}
func (p *parser) isSnippet() (bool, string) {
keys := p.block.Keys
// A snippet block is a single key with parens. Nothing else qualifies.
if len(keys) == 1 && strings.HasPrefix(keys[0], "(") && strings.HasSuffix(keys[0], ")") {
return true, strings.TrimSuffix(keys[0][1:], ")")
}
return false, ""
}
// read and store everything in a block for later replay.
func (p *parser) snippetTokens() ([]Token, error) {
// TODO: disallow imports in snippets for simplicity at import time
// snippet must have curlies.
err := p.openCurlyBrace()
if err != nil {
return nil, err
}
count := 1
tokens := []Token{}
for p.Next() {
if p.Val() == "}" {
count--
if count == 0 {
break
}
}
if p.Val() == "{" {
count++
}
tokens = append(tokens, p.tokens[p.cursor])
}
// make sure we're matched up
if count != 0 {
return nil, p.SyntaxErr("}")
}
return tokens, nil
}

133
vendor/github.com/caddyserver/caddy/commands.go generated vendored
View File

@ -1,133 +0,0 @@
// Copyright 2015 Light Code Labs, LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package caddy
import (
"errors"
"runtime"
"unicode"
"github.com/flynn/go-shlex"
)
var runtimeGoos = runtime.GOOS
// SplitCommandAndArgs takes a command string and parses it shell-style into the
// command and its separate arguments.
func SplitCommandAndArgs(command string) (cmd string, args []string, err error) {
var parts []string
if runtimeGoos == "windows" {
parts = parseWindowsCommand(command) // parse it Windows-style
} else {
parts, err = parseUnixCommand(command) // parse it Unix-style
if err != nil {
err = errors.New("error parsing command: " + err.Error())
return
}
}
if len(parts) == 0 {
err = errors.New("no command contained in '" + command + "'")
return
}
cmd = parts[0]
if len(parts) > 1 {
args = parts[1:]
}
return
}
// parseUnixCommand parses a unix style command line and returns the
// command and its arguments or an error
func parseUnixCommand(cmd string) ([]string, error) {
return shlex.Split(cmd)
}
// parseWindowsCommand parses windows command lines and
// returns the command and the arguments as an array. It
// should be able to parse commonly used command lines.
// Only basic syntax is supported:
// - spaces in double quotes are not token delimiters
// - double quotes are escaped by either backspace or another double quote
// - except for the above case backspaces are path separators (not special)
//
// Many sources point out that escaping quotes using backslash can be unsafe.
// Use two double quotes when possible. (Source: http://stackoverflow.com/a/31413730/2616179 )
//
// This function has to be used on Windows instead
// of the shlex package because this function treats backslash
// characters properly.
func parseWindowsCommand(cmd string) []string {
const backslash = '\\'
const quote = '"'
var parts []string
var part string
var inQuotes bool
var lastRune rune
for i, ch := range cmd {
if i != 0 {
lastRune = rune(cmd[i-1])
}
if ch == backslash {
// put it in the part - for now we don't know if it's an
// escaping char or path separator
part += string(ch)
continue
}
if ch == quote {
if lastRune == backslash {
// remove the backslash from the part and add the escaped quote instead
part = part[:len(part)-1]
part += string(ch)
continue
}
if lastRune == quote {
// revert the last change of the inQuotes state
// it was an escaping quote
inQuotes = !inQuotes
part += string(ch)
continue
}
// normal escaping quotes
inQuotes = !inQuotes
continue
}
if unicode.IsSpace(ch) && !inQuotes && len(part) > 0 {
parts = append(parts, part)
part = ""
continue
}
part += string(ch)
}
if len(part) > 0 {
parts = append(parts, part)
}
return parts
}

145
vendor/github.com/caddyserver/caddy/controller.go generated vendored
View File

@ -1,145 +0,0 @@
// Copyright 2015 Light Code Labs, LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package caddy
import (
"strings"
"github.com/caddyserver/caddy/caddyfile"
)
// Controller is given to the setup function of directives which
// gives them access to be able to read tokens with which to
// configure themselves. It also stores state for the setup
// functions, can get the current context, and can be used to
// identify a particular server block using the Key field.
type Controller struct {
caddyfile.Dispenser
// The instance in which the setup is occurring
instance *Instance
// Key is the key from the top of the server block, usually
// an address, hostname, or identifier of some sort.
Key string
// OncePerServerBlock is a function that executes f
// exactly once per server block, no matter how many
// hosts are associated with it. If it is the first
// time, the function f is executed immediately
// (not deferred) and may return an error which is
// returned by OncePerServerBlock.
OncePerServerBlock func(f func() error) error
// ServerBlockIndex is the 0-based index of the
// server block as it appeared in the input.
ServerBlockIndex int
// ServerBlockKeyIndex is the 0-based index of this
// key as it appeared in the input at the head of the
// server block.
ServerBlockKeyIndex int
// ServerBlockKeys is a list of keys that are
// associated with this server block. All these
// keys, consequently, share the same tokens.
ServerBlockKeys []string
// ServerBlockStorage is used by a directive's
// setup function to persist state between all
// the keys on a server block.
ServerBlockStorage interface{}
}
// ServerType gets the name of the server type that is being set up.
func (c *Controller) ServerType() string {
return c.instance.serverType
}
// OnFirstStartup adds fn to the list of callback functions to execute
// when the server is about to be started NOT as part of a restart.
func (c *Controller) OnFirstStartup(fn func() error) {
c.instance.OnFirstStartup = append(c.instance.OnFirstStartup, fn)
}
// OnStartup adds fn to the list of callback functions to execute
// when the server is about to be started (including restarts).
func (c *Controller) OnStartup(fn func() error) {
c.instance.OnStartup = append(c.instance.OnStartup, fn)
}
// OnRestart adds fn to the list of callback functions to execute
// when the server is about to be restarted.
func (c *Controller) OnRestart(fn func() error) {
c.instance.OnRestart = append(c.instance.OnRestart, fn)
}
// OnRestartFailed adds fn to the list of callback functions to execute
// if the server failed to restart.
func (c *Controller) OnRestartFailed(fn func() error) {
c.instance.OnRestartFailed = append(c.instance.OnRestartFailed, fn)
}
// OnShutdown adds fn to the list of callback functions to execute
// when the server is about to be shut down (including restarts).
func (c *Controller) OnShutdown(fn func() error) {
c.instance.OnShutdown = append(c.instance.OnShutdown, fn)
}
// OnFinalShutdown adds fn to the list of callback functions to execute
// when the server is about to be shut down NOT as part of a restart.
func (c *Controller) OnFinalShutdown(fn func() error) {
c.instance.OnFinalShutdown = append(c.instance.OnFinalShutdown, fn)
}
// Context gets the context associated with the instance associated with c.
func (c *Controller) Context() Context {
return c.instance.context
}
// Get safely gets a value from the Instance's storage.
func (c *Controller) Get(key interface{}) interface{} {
c.instance.StorageMu.RLock()
defer c.instance.StorageMu.RUnlock()
return c.instance.Storage[key]
}
// Set safely sets a value on the Instance's storage.
func (c *Controller) Set(key, val interface{}) {
c.instance.StorageMu.Lock()
c.instance.Storage[key] = val
c.instance.StorageMu.Unlock()
}
// NewTestController creates a new Controller for
// the server type and input specified. The filename
// is "Testfile". If the server type is not empty and
// is plugged in, a context will be created so that
// the results of setup functions can be checked for
// correctness.
//
// Used only for testing, but exported so plugins can
// use this for convenience.
func NewTestController(serverType, input string) *Controller {
testInst := &Instance{serverType: serverType, Storage: make(map[interface{}]interface{})}
if stype, err := getServerType(serverType); err == nil {
testInst.context = stype.NewContext(testInst)
}
return &Controller{
instance: testInst,
Dispenser: caddyfile.NewDispenser("Testfile", strings.NewReader(input)),
OncePerServerBlock: func(f func() error) error { return f() },
}
}

25
vendor/github.com/caddyserver/caddy/go.mod generated vendored
View File

@ -1,25 +0,0 @@
module github.com/caddyserver/caddy
go 1.13
require (
github.com/dustin/go-humanize v1.0.0
github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568
github.com/go-acme/lego/v3 v3.2.0
github.com/google/uuid v1.1.1
github.com/gorilla/websocket v1.4.0
github.com/hashicorp/go-syslog v1.0.0
github.com/jimstudt/http-authentication v0.0.0-20140401203705-3eca13d6893a
github.com/klauspost/cpuid v1.2.0
github.com/kylelemons/godebug v0.0.0-20170820004349-d65d576e9348 // indirect
github.com/lucas-clemente/quic-go v0.13.1
github.com/mholt/certmagic v0.8.3
github.com/naoina/go-stringutil v0.1.0 // indirect
github.com/naoina/toml v0.1.1
github.com/russross/blackfriday v0.0.0-20170610170232-067529f716f4
golang.org/x/net v0.0.0-20191027093000-83d349e8ac1a
golang.org/x/sys v0.0.0-20191026070338-33540a1f6037 // indirect
gopkg.in/mcuadros/go-syslog.v2 v2.2.1
gopkg.in/natefinch/lumberjack.v2 v2.0.0
gopkg.in/yaml.v2 v2.2.2
)

368
vendor/github.com/caddyserver/caddy/go.sum generated vendored
View File

@ -1,368 +0,0 @@
cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
contrib.go.opencensus.io/exporter/ocagent v0.4.12/go.mod h1:450APlNTSR6FrvC3CTRqYosuDstRB9un7SOx2k/9ckA=
github.com/Azure/azure-sdk-for-go v32.4.0+incompatible/go.mod h1:9XXNKU+eRnpl9moKnB4QOLf1HestfXbmab5FXxiDBjc=
github.com/Azure/go-autorest/autorest v0.1.0/go.mod h1:AKyIcETwSUFxIcs/Wnq/C+kwCtlEYGUVd7FPNb2slmg=
github.com/Azure/go-autorest/autorest v0.5.0/go.mod h1:9HLKlQjVBH6U3oDfsXOeVc56THsLPw1L03yban4xThw=
github.com/Azure/go-autorest/autorest/adal v0.1.0/go.mod h1:MeS4XhScH55IST095THyTxElntu7WqB7pNbZo8Q5G3E=
github.com/Azure/go-autorest/autorest/adal v0.2.0/go.mod h1:MeS4XhScH55IST095THyTxElntu7WqB7pNbZo8Q5G3E=
github.com/Azure/go-autorest/autorest/azure/auth v0.1.0/go.mod h1:Gf7/i2FUpyb/sGBLIFxTBzrNzBo7aPXXE3ZVeDRwdpM=
github.com/Azure/go-autorest/autorest/azure/cli v0.1.0/go.mod h1:Dk8CUAt/b/PzkfeRsWzVG9Yj3ps8mS8ECztu43rdU8U=
github.com/Azure/go-autorest/autorest/date v0.1.0/go.mod h1:plvfp3oPSKwf2DNjlBjWF/7vwR+cUD/ELuzDCXwHUVA=
github.com/Azure/go-autorest/autorest/mocks v0.1.0/go.mod h1:OTyCOPRA2IgIlWxVYxBee2F5Gr4kF2zd2J5cFRaIDN0=
github.com/Azure/go-autorest/autorest/to v0.2.0/go.mod h1:GunWKJp1AEqgMaGLV+iocmRAJWqST1wQYhyyjXJ3SJc=
github.com/Azure/go-autorest/autorest/validation v0.1.0/go.mod h1:Ha3z/SqBeaalWQvokg3NZAlQTalVMtOIAs1aGK7G6u8=
github.com/Azure/go-autorest/logger v0.1.0/go.mod h1:oExouG+K6PryycPJfVSxi/koC6LSNgds39diKLz7Vrc=
github.com/Azure/go-autorest/tracing v0.1.0/go.mod h1:ROEEAFwXycQw7Sn3DXNtEedEvdeRAgDr0izn4z5Ij88=
github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
github.com/OpenDNS/vegadns2client v0.0.0-20180418235048-a3fa4a771d87/go.mod h1:iGLljf5n9GjT6kc0HBvyI1nOKnGQbNB66VzSNbK5iks=
github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWXgklEdEo=
github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=
github.com/akamai/AkamaiOPEN-edgegrid-golang v0.9.0/go.mod h1:zpDJeKyp9ScW4NNrbdr+Eyxvry3ilGPewKoXw3XGN1k=
github.com/alangpierce/go-forceexport v0.0.0-20160317203124-8f1d6941cd75 h1:3ILjVyslFbc4jl1w5TWuvvslFD/nDfR2H8tVaMVLrEY=
github.com/alangpierce/go-forceexport v0.0.0-20160317203124-8f1d6941cd75/go.mod h1:uAXEEpARkRhCZfEvy/y0Jcc888f9tHCc1W7/UeEtreE=
github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
github.com/aliyun/alibaba-cloud-sdk-go v0.0.0-20190808125512-07798873deee/go.mod h1:myCDvQSzCW+wB1WAlocEru4wMGJxy+vlxHdhegi1CDQ=
github.com/aliyun/aliyun-oss-go-sdk v0.0.0-20190307165228-86c17b95fcd5/go.mod h1:T/Aws4fEfogEE9v+HPhhw+CntffsBHJ8nXQCwKr0/g8=
github.com/apache/thrift v0.12.0/go.mod h1:cp2SuWMxlEZw2r+iP2GNCdIi4C1qmUzdZFSVb+bacwQ=
github.com/aws/aws-sdk-go v1.23.0/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
github.com/baiyubin/aliyun-sts-go-sdk v0.0.0-20180326062324-cfa1a18b161f/go.mod h1:AuiFmCCPBSrqvVMvuqFuk0qogytodnVFVSN5CeJB8Gc=
github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
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github.com/labbsr0x/goh v1.0.1/go.mod h1:8K2UhVoaWXcCU7Lxoa2omWnC8gyW8px7/lmO61c027w=
github.com/linode/linodego v0.10.0/go.mod h1:cziNP7pbvE3mXIPneHj0oRY8L1WtGEIKlZ8LANE4eXA=
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github.com/marten-seemann/chacha20 v0.2.0 h1:f40vqzzx+3GdOmzQoItkLX5WLvHgPgyYqFFIO5Gh4hQ=
github.com/marten-seemann/chacha20 v0.2.0/go.mod h1:HSdjFau7GzYRj+ahFNwsO3ouVJr1HFkWoEwNDb4TMtE=
github.com/marten-seemann/qpack v0.1.0 h1:/0M7lkda/6mus9B8u34Asqm8ZhHAAt9Ho0vniNuVSVg=
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github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
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github.com/miekg/dns v1.1.15 h1:CSSIDtllwGLMoA6zjdKnaE6Tx6eVUxQ29LUgGetiDCI=
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golang.org/x/net v0.0.0-20191027093000-83d349e8ac1a/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
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golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
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470
vendor/github.com/caddyserver/caddy/plugins.go generated vendored
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@ -1,470 +0,0 @@
// Copyright 2015 Light Code Labs, LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package caddy
import (
"fmt"
"log"
"net"
"sort"
"sync"
"github.com/caddyserver/caddy/caddyfile"
)
// These are all the registered plugins.
var (
// serverTypes is a map of registered server types.
serverTypes = make(map[string]ServerType)
// plugins is a map of server type to map of plugin name to
// Plugin. These are the "general" plugins that may or may
// not be associated with a specific server type. If it's
// applicable to multiple server types or the server type is
// irrelevant, the key is empty string (""). But all plugins
// must have a name.
plugins = make(map[string]map[string]Plugin)
// eventHooks is a map of hook name to Hook. All hooks plugins
// must have a name.
eventHooks = &sync.Map{}
// parsingCallbacks maps server type to map of directive
// to list of callback functions. These aren't really
// plugins on their own, but are often registered from
// plugins.
parsingCallbacks = make(map[string]map[string][]ParsingCallback)
// caddyfileLoaders is the list of all Caddyfile loaders
// in registration order.
caddyfileLoaders []caddyfileLoader
)
// DescribePlugins returns a string describing the registered plugins.
func DescribePlugins() string {
pl := ListPlugins()
str := "Server types:\n"
for _, name := range pl["server_types"] {
str += " " + name + "\n"
}
str += "\nCaddyfile loaders:\n"
for _, name := range pl["caddyfile_loaders"] {
str += " " + name + "\n"
}
if len(pl["event_hooks"]) > 0 {
str += "\nEvent hook plugins:\n"
for _, name := range pl["event_hooks"] {
str += " hook." + name + "\n"
}
}
if len(pl["clustering"]) > 0 {
str += "\nClustering plugins:\n"
for _, name := range pl["clustering"] {
str += " " + name + "\n"
}
}
str += "\nOther plugins:\n"
for _, name := range pl["others"] {
str += " " + name + "\n"
}
return str
}
// ListPlugins makes a list of the registered plugins,
// keyed by plugin type.
func ListPlugins() map[string][]string {
p := make(map[string][]string)
// server type plugins
for name := range serverTypes {
p["server_types"] = append(p["server_types"], name)
}
// caddyfile loaders in registration order
for _, loader := range caddyfileLoaders {
p["caddyfile_loaders"] = append(p["caddyfile_loaders"], loader.name)
}
if defaultCaddyfileLoader.name != "" {
p["caddyfile_loaders"] = append(p["caddyfile_loaders"], defaultCaddyfileLoader.name)
}
// List the event hook plugins
eventHooks.Range(func(k, _ interface{}) bool {
p["event_hooks"] = append(p["event_hooks"], k.(string))
return true
})
// alphabetize the rest of the plugins
var others []string
for stype, stypePlugins := range plugins {
for name := range stypePlugins {
var s string
if stype != "" {
s = stype + "."
}
s += name
others = append(others, s)
}
}
sort.Strings(others)
for _, name := range others {
p["others"] = append(p["others"], name)
}
return p
}
// ValidDirectives returns the list of all directives that are
// recognized for the server type serverType. However, not all
// directives may be installed. This makes it possible to give
// more helpful error messages, like "did you mean ..." or
// "maybe you need to plug in ...".
func ValidDirectives(serverType string) []string {
stype, err := getServerType(serverType)
if err != nil {
return nil
}
return stype.Directives()
}
// ServerListener pairs a server to its listener and/or packetconn.
type ServerListener struct {
server Server
listener net.Listener
packet net.PacketConn
}
// LocalAddr returns the local network address of the packetconn. It returns
// nil when it is not set.
func (s ServerListener) LocalAddr() net.Addr {
if s.packet == nil {
return nil
}
return s.packet.LocalAddr()
}
// Addr returns the listener's network address. It returns nil when it is
// not set.
func (s ServerListener) Addr() net.Addr {
if s.listener == nil {
return nil
}
return s.listener.Addr()
}
// Context is a type which carries a server type through
// the load and setup phase; it maintains the state
// between loading the Caddyfile, then executing its
// directives, then making the servers for Caddy to
// manage. Typically, such state involves configuration
// structs, etc.
type Context interface {
// Called after the Caddyfile is parsed into server
// blocks but before the directives are executed,
// this method gives you an opportunity to inspect
// the server blocks and prepare for the execution
// of directives. Return the server blocks (which
// you may modify, if desired) and an error, if any.
// The first argument is the name or path to the
// configuration file (Caddyfile).
//
// This function can be a no-op and simply return its
// input if there is nothing to do here.
InspectServerBlocks(string, []caddyfile.ServerBlock) ([]caddyfile.ServerBlock, error)
// This is what Caddy calls to make server instances.
// By this time, all directives have been executed and,
// presumably, the context has enough state to produce
// server instances for Caddy to start.
MakeServers() ([]Server, error)
}
// RegisterServerType registers a server type srv by its
// name, typeName.
func RegisterServerType(typeName string, srv ServerType) {
if _, ok := serverTypes[typeName]; ok {
panic("server type already registered")
}
serverTypes[typeName] = srv
}
// ServerType contains information about a server type.
type ServerType struct {
// Function that returns the list of directives, in
// execution order, that are valid for this server
// type. Directives should be one word if possible
// and lower-cased.
Directives func() []string
// DefaultInput returns a default config input if none
// is otherwise loaded. This is optional, but highly
// recommended, otherwise a blank Caddyfile will be
// used.
DefaultInput func() Input
// The function that produces a new server type context.
// This will be called when a new Caddyfile is being
// loaded, parsed, and executed independently of any
// startup phases before this one. It's a way to keep
// each set of server instances separate and to reduce
// the amount of global state you need.
NewContext func(inst *Instance) Context
}
// Plugin is a type which holds information about a plugin.
type Plugin struct {
// ServerType is the type of server this plugin is for.
// Can be empty if not applicable, or if the plugin
// can associate with any server type.
ServerType string
// Action is the plugin's setup function, if associated
// with a directive in the Caddyfile.
Action SetupFunc
}
// RegisterPlugin plugs in plugin. All plugins should register
// themselves, even if they do not perform an action associated
// with a directive. It is important for the process to know
// which plugins are available.
//
// The plugin MUST have a name: lower case and one word.
// If this plugin has an action, it must be the name of
// the directive that invokes it. A name is always required
// and must be unique for the server type.
func RegisterPlugin(name string, plugin Plugin) {
if name == "" {
panic("plugin must have a name")
}
if _, ok := plugins[plugin.ServerType]; !ok {
plugins[plugin.ServerType] = make(map[string]Plugin)
}
if _, dup := plugins[plugin.ServerType][name]; dup {
panic("plugin named " + name + " already registered for server type " + plugin.ServerType)
}
plugins[plugin.ServerType][name] = plugin
}
// EventName represents the name of an event used with event hooks.
type EventName string
// Define names for the various events
const (
StartupEvent EventName = "startup"
ShutdownEvent = "shutdown"
CertRenewEvent = "certrenew"
InstanceStartupEvent = "instancestartup"
InstanceRestartEvent = "instancerestart"
)
// EventHook is a type which holds information about a startup hook plugin.
type EventHook func(eventType EventName, eventInfo interface{}) error
// RegisterEventHook plugs in hook. All the hooks should register themselves
// and they must have a name.
func RegisterEventHook(name string, hook EventHook) {
if name == "" {
panic("event hook must have a name")
}
_, dup := eventHooks.LoadOrStore(name, hook)
if dup {
panic("hook named " + name + " already registered")
}
}
// EmitEvent executes the different hooks passing the EventType as an
// argument. This is a blocking function. Hook developers should
// use 'go' keyword if they don't want to block Caddy.
func EmitEvent(event EventName, info interface{}) {
eventHooks.Range(func(k, v interface{}) bool {
err := v.(EventHook)(event, info)
if err != nil {
log.Printf("error on '%s' hook: %v", k.(string), err)
}
return true
})
}
// cloneEventHooks return a clone of the event hooks *sync.Map
func cloneEventHooks() *sync.Map {
c := &sync.Map{}
eventHooks.Range(func(k, v interface{}) bool {
c.Store(k, v)
return true
})
return c
}
// purgeEventHooks purges all event hooks from the map
func purgeEventHooks() {
eventHooks.Range(func(k, _ interface{}) bool {
eventHooks.Delete(k)
return true
})
}
// restoreEventHooks restores eventHooks with a provided *sync.Map
func restoreEventHooks(m *sync.Map) {
// Purge old event hooks
purgeEventHooks()
// Restore event hooks
m.Range(func(k, v interface{}) bool {
eventHooks.Store(k, v)
return true
})
}
// ParsingCallback is a function that is called after
// a directive's setup functions have been executed
// for all the server blocks.
type ParsingCallback func(Context) error
// RegisterParsingCallback registers callback to be called after
// executing the directive afterDir for server type serverType.
func RegisterParsingCallback(serverType, afterDir string, callback ParsingCallback) {
if _, ok := parsingCallbacks[serverType]; !ok {
parsingCallbacks[serverType] = make(map[string][]ParsingCallback)
}
parsingCallbacks[serverType][afterDir] = append(parsingCallbacks[serverType][afterDir], callback)
}
// SetupFunc is used to set up a plugin, or in other words,
// execute a directive. It will be called once per key for
// each server block it appears in.
type SetupFunc func(c *Controller) error
// DirectiveAction gets the action for directive dir of
// server type serverType.
func DirectiveAction(serverType, dir string) (SetupFunc, error) {
if stypePlugins, ok := plugins[serverType]; ok {
if plugin, ok := stypePlugins[dir]; ok {
return plugin.Action, nil
}
}
if genericPlugins, ok := plugins[""]; ok {
if plugin, ok := genericPlugins[dir]; ok {
return plugin.Action, nil
}
}
return nil, fmt.Errorf("no action found for directive '%s' with server type '%s' (missing a plugin?)",
dir, serverType)
}
// Loader is a type that can load a Caddyfile.
// It is passed the name of the server type.
// It returns an error only if something went
// wrong, not simply if there is no Caddyfile
// for this loader to load.
//
// A Loader should only load the Caddyfile if
// a certain condition or requirement is met,
// as returning a non-nil Input value along with
// another Loader will result in an error.
// In other words, loading the Caddyfile must
// be deliberate & deterministic, not haphazard.
//
// The exception is the default Caddyfile loader,
// which will be called only if no other Caddyfile
// loaders return a non-nil Input. The default
// loader may always return an Input value.
type Loader interface {
Load(serverType string) (Input, error)
}
// LoaderFunc is a convenience type similar to http.HandlerFunc
// that allows you to use a plain function as a Load() method.
type LoaderFunc func(serverType string) (Input, error)
// Load loads a Caddyfile.
func (lf LoaderFunc) Load(serverType string) (Input, error) {
return lf(serverType)
}
// RegisterCaddyfileLoader registers loader named name.
func RegisterCaddyfileLoader(name string, loader Loader) {
caddyfileLoaders = append(caddyfileLoaders, caddyfileLoader{name: name, loader: loader})
}
// SetDefaultCaddyfileLoader registers loader by name
// as the default Caddyfile loader if no others produce
// a Caddyfile. If another Caddyfile loader has already
// been set as the default, this replaces it.
//
// Do not call RegisterCaddyfileLoader on the same
// loader; that would be redundant.
func SetDefaultCaddyfileLoader(name string, loader Loader) {
defaultCaddyfileLoader = caddyfileLoader{name: name, loader: loader}
}
// loadCaddyfileInput iterates the registered Caddyfile loaders
// and, if needed, calls the default loader, to load a Caddyfile.
// It is an error if any of the loaders return an error or if
// more than one loader returns a Caddyfile.
func loadCaddyfileInput(serverType string) (Input, error) {
var loadedBy string
var caddyfileToUse Input
for _, l := range caddyfileLoaders {
cdyfile, err := l.loader.Load(serverType)
if err != nil {
return nil, fmt.Errorf("loading Caddyfile via %s: %v", l.name, err)
}
if cdyfile != nil {
if caddyfileToUse != nil {
return nil, fmt.Errorf("Caddyfile loaded multiple times; first by %s, then by %s", loadedBy, l.name)
}
loaderUsed = l
caddyfileToUse = cdyfile
loadedBy = l.name
}
}
if caddyfileToUse == nil && defaultCaddyfileLoader.loader != nil {
cdyfile, err := defaultCaddyfileLoader.loader.Load(serverType)
if err != nil {
return nil, err
}
if cdyfile != nil {
loaderUsed = defaultCaddyfileLoader
caddyfileToUse = cdyfile
}
}
return caddyfileToUse, nil
}
// OnProcessExit is a list of functions to run when the process
// exits -- they are ONLY for cleanup and should not block,
// return errors, or do anything fancy. They will be run with
// every signal, even if "shutdown callbacks" are not executed.
// This variable must only be modified in the main goroutine
// from init() functions.
var OnProcessExit []func()
// caddyfileLoader pairs the name of a loader to the loader.
type caddyfileLoader struct {
name string
loader Loader
}
var (
defaultCaddyfileLoader caddyfileLoader // the default loader if all else fail
loaderUsed caddyfileLoader // the loader that was used (relevant for reloads)
)

22
vendor/github.com/caddyserver/caddy/rlimit_nonposix.go generated vendored
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@ -1,22 +0,0 @@
// Copyright 2015 Light Code Labs, LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build windows plan9 nacl js
package caddy
// checkFdlimit issues a warning if the OS limit for
// max file descriptors is below a recommended minimum.
func checkFdlimit() {
}

37
vendor/github.com/caddyserver/caddy/rlimit_posix.go generated vendored
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@ -1,37 +0,0 @@
// Copyright 2015 Light Code Labs, LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build !windows,!plan9,!nacl,!js
package caddy
import (
"fmt"
"syscall"
)
// checkFdlimit issues a warning if the OS limit for
// max file descriptors is below a recommended minimum.
func checkFdlimit() {
const min = 8192
// Warn if ulimit is too low for production sites
rlimit := &syscall.Rlimit{}
err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, rlimit)
if err == nil && rlimit.Cur < min {
fmt.Printf("WARNING: File descriptor limit %d is too low for production servers. "+
"At least %d is recommended. Fix with `ulimit -n %d`.\n", rlimit.Cur, min, min)
}
}

108
vendor/github.com/caddyserver/caddy/sigtrap.go generated vendored
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@ -1,108 +0,0 @@
// Copyright 2015 Light Code Labs, LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package caddy
import (
"log"
"os"
"os/signal"
"sync"
"github.com/caddyserver/caddy/telemetry"
)
// TrapSignals create signal handlers for all applicable signals for this
// system. If your Go program uses signals, this is a rather invasive
// function; best to implement them yourself in that case. Signals are not
// required for the caddy package to function properly, but this is a
// convenient way to allow the user to control this part of your program.
func TrapSignals() {
trapSignalsCrossPlatform()
trapSignalsPosix()
}
// trapSignalsCrossPlatform captures SIGINT, which triggers forceful
// shutdown that executes shutdown callbacks first. A second interrupt
// signal will exit the process immediately.
func trapSignalsCrossPlatform() {
go func() {
shutdown := make(chan os.Signal, 1)
signal.Notify(shutdown, os.Interrupt)
for i := 0; true; i++ {
<-shutdown
if i > 0 {
log.Println("[INFO] SIGINT: Force quit")
for _, f := range OnProcessExit {
f() // important cleanup actions only
}
os.Exit(2)
}
log.Println("[INFO] SIGINT: Shutting down")
telemetry.AppendUnique("sigtrap", "SIGINT")
go telemetry.StopEmitting() // not guaranteed to finish in time; that's OK (just don't block!)
// important cleanup actions before shutdown callbacks
for _, f := range OnProcessExit {
f()
}
go func() {
os.Exit(executeShutdownCallbacks("SIGINT"))
}()
}
}()
}
// executeShutdownCallbacks executes the shutdown callbacks as initiated
// by signame. It logs any errors and returns the recommended exit status.
// This function is idempotent; subsequent invocations always return 0.
func executeShutdownCallbacks(signame string) (exitCode int) {
shutdownCallbacksOnce.Do(func() {
// execute third-party shutdown hooks
EmitEvent(ShutdownEvent, signame)
errs := allShutdownCallbacks()
if len(errs) > 0 {
for _, err := range errs {
log.Printf("[ERROR] %s shutdown: %v", signame, err)
}
exitCode = 4
}
})
return
}
// allShutdownCallbacks executes all the shutdown callbacks
// for all the instances, and returns all the errors generated
// during their execution. An error executing one shutdown
// callback does not stop execution of others. Only one shutdown
// callback is executed at a time.
func allShutdownCallbacks() []error {
var errs []error
instancesMu.Lock()
for _, inst := range instances {
errs = append(errs, inst.ShutdownCallbacks()...)
}
instancesMu.Unlock()
return errs
}
// shutdownCallbacksOnce ensures that shutdown callbacks
// for all instances are only executed once.
var shutdownCallbacksOnce sync.Once

19
vendor/github.com/caddyserver/caddy/sigtrap_nonposix.go generated vendored
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@ -1,19 +0,0 @@
// Copyright 2015 Light Code Labs, LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build windows plan9 nacl js
package caddy
func trapSignalsPosix() {}

114
vendor/github.com/caddyserver/caddy/sigtrap_posix.go generated vendored
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@ -1,114 +0,0 @@
// Copyright 2015 Light Code Labs, LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build !windows,!plan9,!nacl,!js
package caddy
import (
"log"
"os"
"os/signal"
"syscall"
"github.com/caddyserver/caddy/telemetry"
)
// trapSignalsPosix captures POSIX-only signals.
func trapSignalsPosix() {
go func() {
sigchan := make(chan os.Signal, 1)
signal.Notify(sigchan, syscall.SIGTERM, syscall.SIGHUP, syscall.SIGQUIT, syscall.SIGUSR1, syscall.SIGUSR2)
for sig := range sigchan {
switch sig {
case syscall.SIGQUIT:
log.Println("[INFO] SIGQUIT: Quitting process immediately")
for _, f := range OnProcessExit {
f() // only perform important cleanup actions
}
os.Exit(0)
case syscall.SIGTERM:
log.Println("[INFO] SIGTERM: Shutting down servers then terminating")
exitCode := executeShutdownCallbacks("SIGTERM")
for _, f := range OnProcessExit {
f() // only perform important cleanup actions
}
err := Stop()
if err != nil {
log.Printf("[ERROR] SIGTERM stop: %v", err)
exitCode = 3
}
telemetry.AppendUnique("sigtrap", "SIGTERM")
go telemetry.StopEmitting() // won't finish in time, but that's OK - just don't block
os.Exit(exitCode)
case syscall.SIGUSR1:
log.Println("[INFO] SIGUSR1: Reloading")
go telemetry.AppendUnique("sigtrap", "SIGUSR1")
// Start with the existing Caddyfile
caddyfileToUse, inst, err := getCurrentCaddyfile()
if err != nil {
log.Printf("[ERROR] SIGUSR1: %v", err)
continue
}
if loaderUsed.loader == nil {
// This also should never happen
log.Println("[ERROR] SIGUSR1: no Caddyfile loader with which to reload Caddyfile")
continue
}
// Load the updated Caddyfile
newCaddyfile, err := loaderUsed.loader.Load(inst.serverType)
if err != nil {
log.Printf("[ERROR] SIGUSR1: loading updated Caddyfile: %v", err)
continue
}
if newCaddyfile != nil {
caddyfileToUse = newCaddyfile
}
// Backup old event hooks
oldEventHooks := cloneEventHooks()
// Purge the old event hooks
purgeEventHooks()
// Kick off the restart; our work is done
EmitEvent(InstanceRestartEvent, nil)
_, err = inst.Restart(caddyfileToUse)
if err != nil {
restoreEventHooks(oldEventHooks)
log.Printf("[ERROR] SIGUSR1: %v", err)
}
case syscall.SIGUSR2:
log.Println("[INFO] SIGUSR2: Upgrading")
go telemetry.AppendUnique("sigtrap", "SIGUSR2")
if err := Upgrade(); err != nil {
log.Printf("[ERROR] SIGUSR2: upgrading: %v", err)
}
case syscall.SIGHUP:
// ignore; this signal is sometimes sent outside of the user's control
go telemetry.AppendUnique("sigtrap", "SIGHUP")
}
}
}()
}

310
vendor/github.com/caddyserver/caddy/telemetry/collection.go generated vendored
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@ -1,310 +0,0 @@
// Copyright 2015 Light Code Labs, LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package telemetry
import (
"fmt"
"hash/fnv"
"log"
"strings"
"github.com/google/uuid"
)
// Init initializes this package so that it may
// be used. Do not call this function more than
// once. Init panics if it is called more than
// once or if the UUID value is empty. Once this
// function is called, the rest of the package
// may safely be used. If this function is not
// called, the collector functions may still be
// invoked, but they will be no-ops.
//
// Any metrics keys that are passed in the second
// argument will be permanently disabled for the
// lifetime of the process.
func Init(instanceID uuid.UUID, disabledMetricsKeys []string) {
if enabled {
panic("already initialized")
}
if str := instanceID.String(); str == "" ||
str == "00000000-0000-0000-0000-000000000000" {
panic("empty UUID")
}
instanceUUID = instanceID
disabledMetricsMu.Lock()
for _, key := range disabledMetricsKeys {
disabledMetrics[strings.TrimSpace(key)] = false
}
disabledMetricsMu.Unlock()
enabled = true
}
// StartEmitting sends the current payload and begins the
// transmission cycle for updates. This is the first
// update sent, and future ones will be sent until
// StopEmitting is called.
//
// This function is non-blocking (it spawns a new goroutine).
//
// This function panics if it was called more than once.
// It is a no-op if this package was not initialized.
func StartEmitting() {
if !enabled {
return
}
updateTimerMu.Lock()
if updateTimer != nil {
updateTimerMu.Unlock()
panic("updates already started")
}
updateTimerMu.Unlock()
updateMu.Lock()
if updating {
updateMu.Unlock()
panic("update already in progress")
}
updateMu.Unlock()
go logEmit(false)
}
// StopEmitting sends the current payload and terminates
// the update cycle. No more updates will be sent.
//
// It is a no-op if the package was never initialized
// or if emitting was never started.
//
// NOTE: This function is blocking. Run in a goroutine if
// you want to guarantee no blocking at critical times
// like exiting the program.
func StopEmitting() {
if !enabled {
return
}
updateTimerMu.Lock()
if updateTimer == nil {
updateTimerMu.Unlock()
return
}
updateTimerMu.Unlock()
logEmit(true) // likely too early; may take minutes to return
}
// Reset empties the current payload buffer.
func Reset() {
resetBuffer()
}
// Set puts a value in the buffer to be included
// in the next emission. It overwrites any
// previous value.
//
// This function is safe for multiple goroutines,
// and it is recommended to call this using the
// go keyword after the call to SendHello so it
// doesn't block crucial code.
func Set(key string, val interface{}) {
if !enabled || isDisabled(key) {
return
}
bufferMu.Lock()
if _, ok := buffer[key]; !ok {
if bufferItemCount >= maxBufferItems {
bufferMu.Unlock()
return
}
bufferItemCount++
}
buffer[key] = val
bufferMu.Unlock()
}
// SetNested puts a value in the buffer to be included
// in the next emission, nested under the top-level key
// as subkey. It overwrites any previous value.
//
// This function is safe for multiple goroutines,
// and it is recommended to call this using the
// go keyword after the call to SendHello so it
// doesn't block crucial code.
func SetNested(key, subkey string, val interface{}) {
if !enabled || isDisabled(key) {
return
}
bufferMu.Lock()
if topLevel, ok1 := buffer[key]; ok1 {
topLevelMap, ok2 := topLevel.(map[string]interface{})
if !ok2 {
bufferMu.Unlock()
log.Printf("[PANIC] Telemetry: key %s is already used for non-nested-map value", key)
return
}
if _, ok3 := topLevelMap[subkey]; !ok3 {
// don't exceed max buffer size
if bufferItemCount >= maxBufferItems {
bufferMu.Unlock()
return
}
bufferItemCount++
}
topLevelMap[subkey] = val
} else {
// don't exceed max buffer size
if bufferItemCount >= maxBufferItems {
bufferMu.Unlock()
return
}
bufferItemCount++
buffer[key] = map[string]interface{}{subkey: val}
}
bufferMu.Unlock()
}
// Append appends value to a list named key.
// If key is new, a new list will be created.
// If key maps to a type that is not a list,
// a panic is logged, and this is a no-op.
func Append(key string, value interface{}) {
if !enabled || isDisabled(key) {
return
}
bufferMu.Lock()
if bufferItemCount >= maxBufferItems {
bufferMu.Unlock()
return
}
// TODO: Test this...
bufVal, inBuffer := buffer[key]
sliceVal, sliceOk := bufVal.([]interface{})
if inBuffer && !sliceOk {
bufferMu.Unlock()
log.Printf("[PANIC] Telemetry: key %s already used for non-slice value", key)
return
}
if sliceVal == nil {
buffer[key] = []interface{}{value}
} else if sliceOk {
buffer[key] = append(sliceVal, value)
}
bufferItemCount++
bufferMu.Unlock()
}
// AppendUnique adds value to a set named key.
// Set items are unordered. Values in the set
// are unique, but how many times they are
// appended is counted. The value must be
// hashable.
//
// If key is new, a new set will be created for
// values with that key. If key maps to a type
// that is not a counting set, a panic is logged,
// and this is a no-op.
func AppendUnique(key string, value interface{}) {
if !enabled || isDisabled(key) {
return
}
bufferMu.Lock()
bufVal, inBuffer := buffer[key]
setVal, setOk := bufVal.(countingSet)
if inBuffer && !setOk {
bufferMu.Unlock()
log.Printf("[PANIC] Telemetry: key %s already used for non-counting-set value", key)
return
}
if setVal == nil {
// ensure the buffer is not too full, then add new unique value
if bufferItemCount >= maxBufferItems {
bufferMu.Unlock()
return
}
buffer[key] = countingSet{value: 1}
bufferItemCount++
} else if setOk {
// unique value already exists, so just increment counter
setVal[value]++
}
bufferMu.Unlock()
}
// Add adds amount to a value named key.
// If it does not exist, it is created with
// a value of 1. If key maps to a type that
// is not an integer, a panic is logged,
// and this is a no-op.
func Add(key string, amount int) {
atomicAdd(key, amount)
}
// Increment is a shortcut for Add(key, 1)
func Increment(key string) {
atomicAdd(key, 1)
}
// atomicAdd adds amount (negative to subtract)
// to key.
func atomicAdd(key string, amount int) {
if !enabled || isDisabled(key) {
return
}
bufferMu.Lock()
bufVal, inBuffer := buffer[key]
intVal, intOk := bufVal.(int)
if inBuffer && !intOk {
bufferMu.Unlock()
log.Printf("[PANIC] Telemetry: key %s already used for non-integer value", key)
return
}
if !inBuffer {
if bufferItemCount >= maxBufferItems {
bufferMu.Unlock()
return
}
bufferItemCount++
}
buffer[key] = intVal + amount
bufferMu.Unlock()
}
// FastHash hashes input using a 32-bit hashing algorithm
// that is fast, and returns the hash as a hex-encoded string.
// Do not use this for cryptographic purposes.
func FastHash(input []byte) string {
h := fnv.New32a()
if _, err := h.Write(input); err != nil {
log.Println("[ERROR] failed to write bytes: ", err)
}
return fmt.Sprintf("%x", h.Sum32())
}
// isDisabled returns whether key is
// a disabled metric key. ALL collection
// functions should call this and not
// save the value if this returns true.
func isDisabled(key string) bool {
// for keys that are augmented with data, such as
// "tls_client_hello_ua:<hash>", just
// check the prefix "tls_client_hello_ua"
checkKey := key
if idx := strings.Index(key, ":"); idx > -1 {
checkKey = key[:idx]
}
disabledMetricsMu.RLock()
_, ok := disabledMetrics[checkKey]
disabledMetricsMu.RUnlock()
return ok
}

428
vendor/github.com/caddyserver/caddy/telemetry/telemetry.go generated vendored
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@ -1,428 +0,0 @@
// Copyright 2015 Light Code Labs, LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package telemetry implements the client for server-side telemetry
// of the network. Functions in this package are synchronous and blocking
// unless otherwise specified. For convenience, most functions here do
// not return errors, but errors are logged to the standard logger.
//
// To use this package, first call Init(). You can then call any of the
// collection/aggregation functions. Call StartEmitting() when you are
// ready to begin sending telemetry updates.
//
// When collecting metrics (functions like Set, AppendUnique, or Increment),
// it may be desirable and even recommended to invoke them in a new
// goroutine in case there is lock contention; they are thread-safe (unless
// noted), and you may not want them to block the main thread of execution.
// However, sometimes blocking may be necessary too; for example, adding
// startup metrics to the buffer before the call to StartEmitting().
//
// This package is designed to be as fast and space-efficient as reasonably
// possible, so that it does not disrupt the flow of execution.
package telemetry
import (
"bytes"
"encoding/json"
"fmt"
"io/ioutil"
"log"
"math/rand"
"net/http"
"runtime"
"strconv"
"strings"
"sync"
"time"
"github.com/google/uuid"
)
// logEmit calls emit and then logs the error, if any.
// See docs for emit.
func logEmit(final bool) {
err := emit(final)
if err != nil {
log.Printf("[ERROR] Sending telemetry: %v", err)
}
}
// emit sends an update to the telemetry server.
// Set final to true if this is the last call to emit.
// If final is true, no future updates will be scheduled.
// Otherwise, the next update will be scheduled.
func emit(final bool) error {
if !enabled {
return fmt.Errorf("telemetry not enabled")
}
// some metrics are updated/set at time of emission
setEmitTimeMetrics()
// ensure only one update happens at a time;
// skip update if previous one still in progress
updateMu.Lock()
if updating {
updateMu.Unlock()
log.Println("[NOTICE] Skipping this telemetry update because previous one is still working")
return nil
}
updating = true
updateMu.Unlock()
defer func() {
updateMu.Lock()
updating = false
updateMu.Unlock()
}()
// terminate any pending update if this is the last one
if final {
stopUpdateTimer()
}
payloadBytes, err := makePayloadAndResetBuffer()
if err != nil {
return err
}
// this will hold the server's reply
var reply Response
// transmit the payload - use a loop to retry in case of failure
for i := 0; i < 4; i++ {
if i > 0 && err != nil {
// don't hammer the server; first failure might have been
// a fluke, but back off more after that
log.Printf("[WARNING] Sending telemetry (attempt %d): %v - backing off and retrying", i, err)
time.Sleep(time.Duration((i+1)*(i+1)*(i+1)) * time.Second)
}
// send it
var resp *http.Response
resp, err = httpClient.Post(endpoint+instanceUUID.String(), "application/json", bytes.NewReader(payloadBytes))
if err != nil {
continue
}
// check for any special-case response codes
if resp.StatusCode == http.StatusGone {
// the endpoint has been deprecated and is no longer servicing clients
err = fmt.Errorf("telemetry server replied with HTTP %d; upgrade required", resp.StatusCode)
if clen := resp.Header.Get("Content-Length"); clen != "0" && clen != "" {
bodyBytes, readErr := ioutil.ReadAll(resp.Body)
if readErr != nil {
log.Printf("[ERROR] Reading response body from server: %v", readErr)
}
err = fmt.Errorf("%v - %s", err, bodyBytes)
}
resp.Body.Close()
reply.Stop = true
break
}
if resp.StatusCode == http.StatusUnavailableForLegalReasons {
// the endpoint is unavailable, at least to this client, for legal reasons (!)
err = fmt.Errorf("telemetry server replied with HTTP %d %s: please consult the project website and developers for guidance", resp.StatusCode, resp.Status)
if clen := resp.Header.Get("Content-Length"); clen != "0" && clen != "" {
bodyBytes, readErr := ioutil.ReadAll(resp.Body)
if readErr != nil {
log.Printf("[ERROR] Reading response body from server: %v", readErr)
}
err = fmt.Errorf("%v - %s", err, bodyBytes)
}
resp.Body.Close()
reply.Stop = true
break
}
// okay, ensure we can interpret the response
if ct := resp.Header.Get("Content-Type"); (resp.StatusCode < 300 || resp.StatusCode >= 400) &&
!strings.Contains(ct, "json") {
err = fmt.Errorf("telemetry server replied with unknown content-type: '%s' and HTTP %s", ct, resp.Status)
resp.Body.Close()
continue
}
// read the response body
err = json.NewDecoder(resp.Body).Decode(&reply)
resp.Body.Close() // close response body as soon as we're done with it
if err != nil {
continue
}
// update the list of enabled/disabled keys, if any
for _, key := range reply.EnableKeys {
disabledMetricsMu.Lock()
// only re-enable this metric if it is temporarily disabled
if temp, ok := disabledMetrics[key]; ok && temp {
delete(disabledMetrics, key)
}
disabledMetricsMu.Unlock()
}
for _, key := range reply.DisableKeys {
disabledMetricsMu.Lock()
disabledMetrics[key] = true // all remotely-disabled keys are "temporarily" disabled
disabledMetricsMu.Unlock()
}
// make sure we didn't send the update too soon; if so,
// just wait and try again -- this is a special case of
// error that we handle differently, as you can see
if resp.StatusCode == http.StatusTooManyRequests {
if reply.NextUpdate <= 0 {
raStr := resp.Header.Get("Retry-After")
if ra, err := strconv.Atoi(raStr); err == nil {
reply.NextUpdate = time.Duration(ra) * time.Second
}
}
if !final {
log.Printf("[NOTICE] Sending telemetry: we were too early; waiting %s before trying again", reply.NextUpdate)
time.Sleep(reply.NextUpdate)
continue
}
} else if resp.StatusCode >= 400 {
err = fmt.Errorf("telemetry server returned status code %d", resp.StatusCode)
continue
}
break
}
if err == nil && !final {
// (remember, if there was an error, we return it
// below, so it WILL get logged if it's supposed to)
log.Println("[INFO] Sending telemetry: success")
}
// even if there was an error after all retries, we should
// schedule the next update using our default update
// interval because the server might be healthy later
// ensure we won't slam the telemetry server; add a little variance
if reply.NextUpdate < 1*time.Second {
reply.NextUpdate = defaultUpdateInterval + time.Duration(rand.Int63n(int64(1*time.Minute)))
}
// schedule the next update (if this wasn't the last one and
// if the remote server didn't tell us to stop sending)
if !final && !reply.Stop {
updateTimerMu.Lock()
updateTimer = time.AfterFunc(reply.NextUpdate, func() {
logEmit(false)
})
updateTimerMu.Unlock()
}
return err
}
func stopUpdateTimer() {
updateTimerMu.Lock()
updateTimer.Stop()
updateTimer = nil
updateTimerMu.Unlock()
}
// setEmitTimeMetrics sets some metrics that should
// be recorded just before emitting.
func setEmitTimeMetrics() {
Set("goroutines", runtime.NumGoroutine())
var mem runtime.MemStats
runtime.ReadMemStats(&mem)
SetNested("memory", "heap_alloc", mem.HeapAlloc)
SetNested("memory", "sys", mem.Sys)
}
// makePayloadAndResetBuffer prepares a payload
// by emptying the collection buffer. It returns
// the bytes of the payload to send to the server.
// Since the buffer is reset by this, if the
// resulting byte slice is lost, the payload is
// gone with it.
func makePayloadAndResetBuffer() ([]byte, error) {
bufCopy := resetBuffer()
// encode payload in preparation for transmission
payload := Payload{
InstanceID: instanceUUID.String(),
Timestamp: time.Now().UTC(),
Data: bufCopy,
}
return json.Marshal(payload)
}
// resetBuffer makes a local pointer to the buffer,
// then resets the buffer by assigning to be a newly-
// made value to clear it out, then sets the buffer
// item count to 0. It returns the copied pointer to
// the original map so the old buffer value can be
// used locally.
func resetBuffer() map[string]interface{} {
bufferMu.Lock()
bufCopy := buffer
buffer = make(map[string]interface{})
bufferItemCount = 0
bufferMu.Unlock()
return bufCopy
}
// Response contains the body of a response from the
// telemetry server.
type Response struct {
// NextUpdate is how long to wait before the next update.
NextUpdate time.Duration `json:"next_update"`
// Stop instructs the telemetry server to stop sending
// telemetry. This would only be done under extenuating
// circumstances, but we are prepared for it nonetheless.
Stop bool `json:"stop,omitempty"`
// Error will be populated with an error message, if any.
// This field should be empty if the status code is < 400.
Error string `json:"error,omitempty"`
// DisableKeys will contain a list of keys/metrics that
// should NOT be sent until further notice. The client
// must NOT store these items in its buffer or send them
// to the telemetry server while they are disabled. If
// this list and EnableKeys have the same value (which is
// not supposed to happen), this field should dominate.
DisableKeys []string `json:"disable_keys,omitempty"`
// EnableKeys will contain a list of keys/metrics that
// MAY be sent until further notice.
EnableKeys []string `json:"enable_keys,omitempty"`
}
// Payload is the data that gets sent to the telemetry server.
type Payload struct {
// The universally unique ID of the instance
InstanceID string `json:"instance_id"`
// The UTC timestamp of the transmission
Timestamp time.Time `json:"timestamp"`
// The timestamp before which the next update is expected
// (NOT populated by client - the server fills this in
// before it stores the data)
ExpectNext time.Time `json:"expect_next,omitempty"`
// The metrics
Data map[string]interface{} `json:"data,omitempty"`
}
// Int returns the value of the data keyed by key
// if it is an integer; otherwise it returns 0.
func (p Payload) Int(key string) int {
val, _ := p.Data[key]
switch p.Data[key].(type) {
case int:
return val.(int)
case float64: // after JSON-decoding, int becomes float64...
return int(val.(float64))
}
return 0
}
// countingSet implements a set that counts how many
// times a key is inserted. It marshals to JSON in a
// way such that keys are converted to values next
// to their associated counts.
type countingSet map[interface{}]int
// MarshalJSON implements the json.Marshaler interface.
// It converts the set to an array so that the values
// are JSON object values instead of keys, since keys
// are difficult to query in databases.
func (s countingSet) MarshalJSON() ([]byte, error) {
type Item struct {
Value interface{} `json:"value"`
Count int `json:"count"`
}
var list []Item
for k, v := range s {
list = append(list, Item{Value: k, Count: v})
}
return json.Marshal(list)
}
var (
// httpClient should be used for HTTP requests. It
// is configured with a timeout for reliability.
httpClient = http.Client{
Transport: &http.Transport{
TLSHandshakeTimeout: 30 * time.Second,
DisableKeepAlives: true,
},
Timeout: 1 * time.Minute,
}
// buffer holds the data that we are building up to send.
buffer = make(map[string]interface{})
bufferItemCount = 0
bufferMu sync.RWMutex // protects both the buffer and its count
// updating is used to ensure only one
// update happens at a time.
updating bool
updateMu sync.Mutex
// updateTimer fires off the next update.
// If no update is scheduled, this is nil.
updateTimer *time.Timer
updateTimerMu sync.Mutex
// disabledMetrics is a set of metric keys
// that should NOT be saved to the buffer
// or sent to the telemetry server. The value
// indicates whether the entry is temporary.
// If the value is true, it may be removed if
// the metric is re-enabled remotely later. If
// the value is false, it is permanent
// (presumably because the user explicitly
// disabled it) and can only be re-enabled
// with user consent.
disabledMetrics = make(map[string]bool)
disabledMetricsMu sync.RWMutex
// instanceUUID is the ID of the current instance.
// This MUST be set to emit telemetry.
// This MUST NOT be openly exposed to clients, for privacy.
instanceUUID uuid.UUID
// enabled indicates whether the package has
// been initialized and can be actively used.
enabled bool
// maxBufferItems is the maximum number of items we'll allow
// in the buffer before we start dropping new ones, in a
// rough (simple) attempt to keep memory use under control.
maxBufferItems = 100000
)
const (
// endpoint is the base URL to remote telemetry server;
// the instance ID will be appended to it.
endpoint = "https://telemetry.caddyserver.com/v1/update/"
// defaultUpdateInterval is how long to wait before emitting
// more telemetry data if all retires fail. This value is
// only used if the client receives a nonsensical value, or
// doesn't send one at all, or if a connection can't be made,
// likely indicating a problem with the server. Thus, this
// value should be a long duration to help alleviate extra
// load on the server.
defaultUpdateInterval = 1 * time.Hour
)

232
vendor/github.com/caddyserver/caddy/upgrade.go generated vendored
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@ -1,232 +0,0 @@
// Copyright 2015 Light Code Labs, LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package caddy
import (
"encoding/gob"
"fmt"
"io/ioutil"
"log"
"os"
"os/exec"
"sync"
)
func init() {
// register CaddyfileInput with gob so it knows into
// which concrete type to decode an Input interface
gob.Register(CaddyfileInput{})
}
// IsUpgrade returns true if this process is part of an upgrade
// where a parent caddy process spawned this one to upgrade
// the binary.
func IsUpgrade() bool {
mu.Lock()
defer mu.Unlock()
return isUpgrade
}
// Upgrade re-launches the process, preserving the listeners
// for a graceful upgrade. It does NOT load new configuration;
// it only starts the process anew with the current config.
// This makes it possible to perform zero-downtime binary upgrades.
//
// TODO: For more information when debugging, see:
// https://forum.golangbridge.org/t/bind-address-already-in-use-even-after-listener-closed/1510?u=matt
// https://github.com/mholt/shared-conn
func Upgrade() error {
log.Println("[INFO] Upgrading")
// use existing Caddyfile; do not change configuration during upgrade
currentCaddyfile, _, err := getCurrentCaddyfile()
if err != nil {
return err
}
if len(os.Args) == 0 { // this should never happen, but...
os.Args = []string{""}
}
// tell the child that it's a restart
env := os.Environ()
if !IsUpgrade() {
env = append(env, "CADDY__UPGRADE=1")
}
// prepare our payload to the child process
cdyfileGob := transferGob{
ListenerFds: make(map[string]uintptr),
Caddyfile: currentCaddyfile,
}
// prepare a pipe to the fork's stdin so it can get the Caddyfile
rpipe, wpipe, err := os.Pipe()
if err != nil {
return err
}
// prepare a pipe that the child process will use to communicate
// its success with us by sending > 0 bytes
sigrpipe, sigwpipe, err := os.Pipe()
if err != nil {
return err
}
// pass along relevant file descriptors to child process; ordering
// is very important since we rely on these being in certain positions.
extraFiles := []*os.File{sigwpipe} // fd 3
// add file descriptors of all the sockets
for i, j := 0, 0; ; i++ {
instancesMu.Lock()
if i >= len(instances) {
instancesMu.Unlock()
break
}
inst := instances[i]
instancesMu.Unlock()
for _, s := range inst.servers {
gs, gracefulOk := s.server.(GracefulServer)
ln, lnOk := s.listener.(Listener)
pc, pcOk := s.packet.(PacketConn)
if gracefulOk {
if lnOk {
lnFile, _ := ln.File()
extraFiles = append(extraFiles, lnFile)
cdyfileGob.ListenerFds["tcp"+gs.Address()] = uintptr(4 + j) // 4 fds come before any of the listeners
j++
}
if pcOk {
pcFile, _ := pc.File()
extraFiles = append(extraFiles, pcFile)
cdyfileGob.ListenerFds["udp"+gs.Address()] = uintptr(4 + j) // 4 fds come before any of the listeners
j++
}
}
}
}
// set up the command
cmd := exec.Command(os.Args[0], os.Args[1:]...)
cmd.Stdin = rpipe // fd 0
cmd.Stdout = os.Stdout // fd 1
cmd.Stderr = os.Stderr // fd 2
cmd.ExtraFiles = extraFiles
cmd.Env = env
// spawn the child process
err = cmd.Start()
if err != nil {
return err
}
// immediately close our dup'ed fds and the write end of our signal pipe
for _, f := range extraFiles {
err = f.Close()
if err != nil {
return err
}
}
// feed Caddyfile to the child
err = gob.NewEncoder(wpipe).Encode(cdyfileGob)
if err != nil {
return err
}
err = wpipe.Close()
if err != nil {
return err
}
// determine whether child startup succeeded
answer, readErr := ioutil.ReadAll(sigrpipe)
if len(answer) == 0 {
cmdErr := cmd.Wait() // get exit status
errStr := fmt.Sprintf("child failed to initialize: %v", cmdErr)
if readErr != nil {
errStr += fmt.Sprintf(" - additionally, error communicating with child process: %v", readErr)
}
return fmt.Errorf(errStr)
}
// looks like child is successful; we can exit gracefully.
log.Println("[INFO] Upgrade finished")
return Stop()
}
// getCurrentCaddyfile gets the Caddyfile used by the
// current (first) Instance and returns both of them.
func getCurrentCaddyfile() (Input, *Instance, error) {
instancesMu.Lock()
if len(instances) == 0 {
instancesMu.Unlock()
return nil, nil, fmt.Errorf("no server instances are fully running")
}
inst := instances[0]
instancesMu.Unlock()
currentCaddyfile := inst.caddyfileInput
if currentCaddyfile == nil {
// hmm, did spawning process forget to close stdin? Anyhow, this is unusual.
return nil, inst, fmt.Errorf("no Caddyfile to reload (was stdin left open?)")
}
return currentCaddyfile, inst, nil
}
// signalSuccessToParent tells the parent our status using pipe at index 3.
// If this process is not a restart, this function does nothing.
// Calling this function once this process has successfully initialized
// is vital so that the parent process can unblock and kill itself.
// This function is idempotent; it executes at most once per process.
func signalSuccessToParent() {
signalParentOnce.Do(func() {
if IsUpgrade() {
ppipe := os.NewFile(3, "") // parent is reading from pipe at index 3
_, err := ppipe.Write([]byte("success")) // we must send some bytes to the parent
if err != nil {
log.Printf("[ERROR] Communicating successful init to parent: %v", err)
}
ppipe.Close()
}
})
}
// signalParentOnce is used to make sure that the parent is only
// signaled once; doing so more than once breaks whatever socket is
// at fd 4 (TODO: the reason for this is still unclear - to reproduce,
// call Stop() and Start() in succession at least once after a
// restart, then try loading first host of Caddyfile in the browser
// - this was pre-v0.9; this code and godoc is borrowed from the
// implementation then, but I'm not sure if it's been fixed yet, as
// of v0.10.7). Do not use this directly; call signalSuccessToParent
// instead.
var signalParentOnce sync.Once
// transferGob is used if this is a child process as part of
// a graceful upgrade; it is used to map listeners to their
// index in the list of inherited file descriptors. This
// variable is not safe for concurrent access.
var loadedGob transferGob
// transferGob maps bind address to index of the file descriptor
// in the Files array passed to the child process. It also contains
// the Caddyfile contents and any other state needed by the new process.
// Used only during graceful upgrades.
type transferGob struct {
ListenerFds map[string]uintptr
Caddyfile Input
}

8
vendor/github.com/cespare/xxhash/v2/.travis.yml generated vendored
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@ -1,8 +0,0 @@
language: go
go:
- "1.x"
- master
env:
- TAGS=""
- TAGS="-tags purego"
script: go test $TAGS -v ./...

22
vendor/github.com/cespare/xxhash/v2/LICENSE.txt generated vendored
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@ -1,22 +0,0 @@
Copyright (c) 2016 Caleb Spare
MIT License
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

67
vendor/github.com/cespare/xxhash/v2/README.md generated vendored
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@ -1,67 +0,0 @@
# xxhash
[![GoDoc](https://godoc.org/github.com/cespare/xxhash?status.svg)](https://godoc.org/github.com/cespare/xxhash)
[![Build Status](https://travis-ci.org/cespare/xxhash.svg?branch=master)](https://travis-ci.org/cespare/xxhash)
xxhash is a Go implementation of the 64-bit
[xxHash](http://cyan4973.github.io/xxHash/) algorithm, XXH64. This is a
high-quality hashing algorithm that is much faster than anything in the Go
standard library.
This package provides a straightforward API:
```
func Sum64(b []byte) uint64
func Sum64String(s string) uint64
type Digest struct{ ... }
func New() *Digest
```
The `Digest` type implements hash.Hash64. Its key methods are:
```
func (*Digest) Write([]byte) (int, error)
func (*Digest) WriteString(string) (int, error)
func (*Digest) Sum64() uint64
```
This implementation provides a fast pure-Go implementation and an even faster
assembly implementation for amd64.
## Compatibility
This package is in a module and the latest code is in version 2 of the module.
You need a version of Go with at least "minimal module compatibility" to use
github.com/cespare/xxhash/v2:
* 1.9.7+ for Go 1.9
* 1.10.3+ for Go 1.10
* Go 1.11 or later
I recommend using the latest release of Go.
## Benchmarks
Here are some quick benchmarks comparing the pure-Go and assembly
implementations of Sum64.
| input size | purego | asm |
| --- | --- | --- |
| 5 B | 979.66 MB/s | 1291.17 MB/s |
| 100 B | 7475.26 MB/s | 7973.40 MB/s |
| 4 KB | 17573.46 MB/s | 17602.65 MB/s |
| 10 MB | 17131.46 MB/s | 17142.16 MB/s |
These numbers were generated on Ubuntu 18.04 with an Intel i7-8700K CPU using
the following commands under Go 1.11.2:
```
$ go test -tags purego -benchtime 10s -bench '/xxhash,direct,bytes'
$ go test -benchtime 10s -bench '/xxhash,direct,bytes'
```
## Projects using this package
- [InfluxDB](https://github.com/influxdata/influxdb)
- [Prometheus](https://github.com/prometheus/prometheus)
- [FreeCache](https://github.com/coocood/freecache)

3
vendor/github.com/cespare/xxhash/v2/go.mod generated vendored
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@ -1,3 +0,0 @@
module github.com/cespare/xxhash/v2
go 1.11

0
vendor/github.com/cespare/xxhash/v2/go.sum generated vendored
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236
vendor/github.com/cespare/xxhash/v2/xxhash.go generated vendored
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@ -1,236 +0,0 @@
// Package xxhash implements the 64-bit variant of xxHash (XXH64) as described
// at http://cyan4973.github.io/xxHash/.
package xxhash
import (
"encoding/binary"
"errors"
"math/bits"
)
const (
prime1 uint64 = 11400714785074694791
prime2 uint64 = 14029467366897019727
prime3 uint64 = 1609587929392839161
prime4 uint64 = 9650029242287828579
prime5 uint64 = 2870177450012600261
)
// NOTE(caleb): I'm using both consts and vars of the primes. Using consts where
// possible in the Go code is worth a small (but measurable) performance boost
// by avoiding some MOVQs. Vars are needed for the asm and also are useful for
// convenience in the Go code in a few places where we need to intentionally
// avoid constant arithmetic (e.g., v1 := prime1 + prime2 fails because the
// result overflows a uint64).
var (
prime1v = prime1
prime2v = prime2
prime3v = prime3
prime4v = prime4
prime5v = prime5
)
// Digest implements hash.Hash64.
type Digest struct {
v1 uint64
v2 uint64
v3 uint64
v4 uint64
total uint64
mem [32]byte
n int // how much of mem is used
}
// New creates a new Digest that computes the 64-bit xxHash algorithm.
func New() *Digest {
var d Digest
d.Reset()
return &d
}
// Reset clears the Digest's state so that it can be reused.
func (d *Digest) Reset() {
d.v1 = prime1v + prime2
d.v2 = prime2
d.v3 = 0
d.v4 = -prime1v
d.total = 0
d.n = 0
}
// Size always returns 8 bytes.
func (d *Digest) Size() int { return 8 }
// BlockSize always returns 32 bytes.
func (d *Digest) BlockSize() int { return 32 }
// Write adds more data to d. It always returns len(b), nil.
func (d *Digest) Write(b []byte) (n int, err error) {
n = len(b)
d.total += uint64(n)
if d.n+n < 32 {
// This new data doesn't even fill the current block.
copy(d.mem[d.n:], b)
d.n += n
return
}
if d.n > 0 {
// Finish off the partial block.
copy(d.mem[d.n:], b)
d.v1 = round(d.v1, u64(d.mem[0:8]))
d.v2 = round(d.v2, u64(d.mem[8:16]))
d.v3 = round(d.v3, u64(d.mem[16:24]))
d.v4 = round(d.v4, u64(d.mem[24:32]))
b = b[32-d.n:]
d.n = 0
}
if len(b) >= 32 {
// One or more full blocks left.
nw := writeBlocks(d, b)
b = b[nw:]
}
// Store any remaining partial block.
copy(d.mem[:], b)
d.n = len(b)
return
}
// Sum appends the current hash to b and returns the resulting slice.
func (d *Digest) Sum(b []byte) []byte {
s := d.Sum64()
return append(
b,
byte(s>>56),
byte(s>>48),
byte(s>>40),
byte(s>>32),
byte(s>>24),
byte(s>>16),
byte(s>>8),
byte(s),
)
}
// Sum64 returns the current hash.
func (d *Digest) Sum64() uint64 {
var h uint64
if d.total >= 32 {
v1, v2, v3, v4 := d.v1, d.v2, d.v3, d.v4
h = rol1(v1) + rol7(v2) + rol12(v3) + rol18(v4)
h = mergeRound(h, v1)
h = mergeRound(h, v2)
h = mergeRound(h, v3)
h = mergeRound(h, v4)
} else {
h = d.v3 + prime5
}
h += d.total
i, end := 0, d.n
for ; i+8 <= end; i += 8 {
k1 := round(0, u64(d.mem[i:i+8]))
h ^= k1
h = rol27(h)*prime1 + prime4
}
if i+4 <= end {
h ^= uint64(u32(d.mem[i:i+4])) * prime1
h = rol23(h)*prime2 + prime3
i += 4
}
for i < end {
h ^= uint64(d.mem[i]) * prime5
h = rol11(h) * prime1
i++
}
h ^= h >> 33
h *= prime2
h ^= h >> 29
h *= prime3
h ^= h >> 32
return h
}
const (
magic = "xxh\x06"
marshaledSize = len(magic) + 8*5 + 32
)
// MarshalBinary implements the encoding.BinaryMarshaler interface.
func (d *Digest) MarshalBinary() ([]byte, error) {
b := make([]byte, 0, marshaledSize)
b = append(b, magic...)
b = appendUint64(b, d.v1)
b = appendUint64(b, d.v2)
b = appendUint64(b, d.v3)
b = appendUint64(b, d.v4)
b = appendUint64(b, d.total)
b = append(b, d.mem[:d.n]...)
b = b[:len(b)+len(d.mem)-d.n]
return b, nil
}
// UnmarshalBinary implements the encoding.BinaryUnmarshaler interface.
func (d *Digest) UnmarshalBinary(b []byte) error {
if len(b) < len(magic) || string(b[:len(magic)]) != magic {
return errors.New("xxhash: invalid hash state identifier")
}
if len(b) != marshaledSize {
return errors.New("xxhash: invalid hash state size")
}
b = b[len(magic):]
b, d.v1 = consumeUint64(b)
b, d.v2 = consumeUint64(b)
b, d.v3 = consumeUint64(b)
b, d.v4 = consumeUint64(b)
b, d.total = consumeUint64(b)
copy(d.mem[:], b)
b = b[len(d.mem):]
d.n = int(d.total % uint64(len(d.mem)))
return nil
}
func appendUint64(b []byte, x uint64) []byte {
var a [8]byte
binary.LittleEndian.PutUint64(a[:], x)
return append(b, a[:]...)
}
func consumeUint64(b []byte) ([]byte, uint64) {
x := u64(b)
return b[8:], x
}
func u64(b []byte) uint64 { return binary.LittleEndian.Uint64(b) }
func u32(b []byte) uint32 { return binary.LittleEndian.Uint32(b) }
func round(acc, input uint64) uint64 {
acc += input * prime2
acc = rol31(acc)
acc *= prime1
return acc
}
func mergeRound(acc, val uint64) uint64 {
val = round(0, val)
acc ^= val
acc = acc*prime1 + prime4
return acc
}
func rol1(x uint64) uint64 { return bits.RotateLeft64(x, 1) }
func rol7(x uint64) uint64 { return bits.RotateLeft64(x, 7) }
func rol11(x uint64) uint64 { return bits.RotateLeft64(x, 11) }
func rol12(x uint64) uint64 { return bits.RotateLeft64(x, 12) }
func rol18(x uint64) uint64 { return bits.RotateLeft64(x, 18) }
func rol23(x uint64) uint64 { return bits.RotateLeft64(x, 23) }
func rol27(x uint64) uint64 { return bits.RotateLeft64(x, 27) }
func rol31(x uint64) uint64 { return bits.RotateLeft64(x, 31) }

13
vendor/github.com/cespare/xxhash/v2/xxhash_amd64.go generated vendored
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@ -1,13 +0,0 @@
// +build !appengine
// +build gc
// +build !purego
package xxhash
// Sum64 computes the 64-bit xxHash digest of b.
//
//go:noescape
func Sum64(b []byte) uint64
//go:noescape
func writeBlocks(d *Digest, b []byte) int

215
vendor/github.com/cespare/xxhash/v2/xxhash_amd64.s generated vendored
View File

@ -1,215 +0,0 @@
// +build !appengine
// +build gc
// +build !purego
#include "textflag.h"
// Register allocation:
// AX h
// CX pointer to advance through b
// DX n
// BX loop end
// R8 v1, k1
// R9 v2
// R10 v3
// R11 v4
// R12 tmp
// R13 prime1v
// R14 prime2v
// R15 prime4v
// round reads from and advances the buffer pointer in CX.
// It assumes that R13 has prime1v and R14 has prime2v.
#define round(r) \
MOVQ (CX), R12 \
ADDQ $8, CX \
IMULQ R14, R12 \
ADDQ R12, r \
ROLQ $31, r \
IMULQ R13, r
// mergeRound applies a merge round on the two registers acc and val.
// It assumes that R13 has prime1v, R14 has prime2v, and R15 has prime4v.
#define mergeRound(acc, val) \
IMULQ R14, val \
ROLQ $31, val \
IMULQ R13, val \
XORQ val, acc \
IMULQ R13, acc \
ADDQ R15, acc
// func Sum64(b []byte) uint64
TEXT ·Sum64(SB), NOSPLIT, $0-32
// Load fixed primes.
MOVQ ·prime1v(SB), R13
MOVQ ·prime2v(SB), R14
MOVQ ·prime4v(SB), R15
// Load slice.
MOVQ b_base+0(FP), CX
MOVQ b_len+8(FP), DX
LEAQ (CX)(DX*1), BX
// The first loop limit will be len(b)-32.
SUBQ $32, BX
// Check whether we have at least one block.
CMPQ DX, $32
JLT noBlocks
// Set up initial state (v1, v2, v3, v4).
MOVQ R13, R8
ADDQ R14, R8
MOVQ R14, R9
XORQ R10, R10
XORQ R11, R11
SUBQ R13, R11
// Loop until CX > BX.
blockLoop:
round(R8)
round(R9)
round(R10)
round(R11)
CMPQ CX, BX
JLE blockLoop
MOVQ R8, AX
ROLQ $1, AX
MOVQ R9, R12
ROLQ $7, R12
ADDQ R12, AX
MOVQ R10, R12
ROLQ $12, R12
ADDQ R12, AX
MOVQ R11, R12
ROLQ $18, R12
ADDQ R12, AX
mergeRound(AX, R8)
mergeRound(AX, R9)
mergeRound(AX, R10)
mergeRound(AX, R11)
JMP afterBlocks
noBlocks:
MOVQ ·prime5v(SB), AX
afterBlocks:
ADDQ DX, AX
// Right now BX has len(b)-32, and we want to loop until CX > len(b)-8.
ADDQ $24, BX
CMPQ CX, BX
JG fourByte
wordLoop:
// Calculate k1.
MOVQ (CX), R8
ADDQ $8, CX
IMULQ R14, R8
ROLQ $31, R8
IMULQ R13, R8
XORQ R8, AX
ROLQ $27, AX
IMULQ R13, AX
ADDQ R15, AX
CMPQ CX, BX
JLE wordLoop
fourByte:
ADDQ $4, BX
CMPQ CX, BX
JG singles
MOVL (CX), R8
ADDQ $4, CX
IMULQ R13, R8
XORQ R8, AX
ROLQ $23, AX
IMULQ R14, AX
ADDQ ·prime3v(SB), AX
singles:
ADDQ $4, BX
CMPQ CX, BX
JGE finalize
singlesLoop:
MOVBQZX (CX), R12
ADDQ $1, CX
IMULQ ·prime5v(SB), R12
XORQ R12, AX
ROLQ $11, AX
IMULQ R13, AX
CMPQ CX, BX
JL singlesLoop
finalize:
MOVQ AX, R12
SHRQ $33, R12
XORQ R12, AX
IMULQ R14, AX
MOVQ AX, R12
SHRQ $29, R12
XORQ R12, AX
IMULQ ·prime3v(SB), AX
MOVQ AX, R12
SHRQ $32, R12
XORQ R12, AX
MOVQ AX, ret+24(FP)
RET
// writeBlocks uses the same registers as above except that it uses AX to store
// the d pointer.
// func writeBlocks(d *Digest, b []byte) int
TEXT ·writeBlocks(SB), NOSPLIT, $0-40
// Load fixed primes needed for round.
MOVQ ·prime1v(SB), R13
MOVQ ·prime2v(SB), R14
// Load slice.
MOVQ b_base+8(FP), CX
MOVQ b_len+16(FP), DX
LEAQ (CX)(DX*1), BX
SUBQ $32, BX
// Load vN from d.
MOVQ d+0(FP), AX
MOVQ 0(AX), R8 // v1
MOVQ 8(AX), R9 // v2
MOVQ 16(AX), R10 // v3
MOVQ 24(AX), R11 // v4
// We don't need to check the loop condition here; this function is
// always called with at least one block of data to process.
blockLoop:
round(R8)
round(R9)
round(R10)
round(R11)
CMPQ CX, BX
JLE blockLoop
// Copy vN back to d.
MOVQ R8, 0(AX)
MOVQ R9, 8(AX)
MOVQ R10, 16(AX)
MOVQ R11, 24(AX)
// The number of bytes written is CX minus the old base pointer.
SUBQ b_base+8(FP), CX
MOVQ CX, ret+32(FP)
RET

76
vendor/github.com/cespare/xxhash/v2/xxhash_other.go generated vendored
View File

@ -1,76 +0,0 @@
// +build !amd64 appengine !gc purego
package xxhash
// Sum64 computes the 64-bit xxHash digest of b.
func Sum64(b []byte) uint64 {
// A simpler version would be
// d := New()
// d.Write(b)
// return d.Sum64()
// but this is faster, particularly for small inputs.
n := len(b)
var h uint64
if n >= 32 {
v1 := prime1v + prime2
v2 := prime2
v3 := uint64(0)
v4 := -prime1v
for len(b) >= 32 {
v1 = round(v1, u64(b[0:8:len(b)]))
v2 = round(v2, u64(b[8:16:len(b)]))
v3 = round(v3, u64(b[16:24:len(b)]))
v4 = round(v4, u64(b[24:32:len(b)]))
b = b[32:len(b):len(b)]
}
h = rol1(v1) + rol7(v2) + rol12(v3) + rol18(v4)
h = mergeRound(h, v1)
h = mergeRound(h, v2)
h = mergeRound(h, v3)
h = mergeRound(h, v4)
} else {
h = prime5
}
h += uint64(n)
i, end := 0, len(b)
for ; i+8 <= end; i += 8 {
k1 := round(0, u64(b[i:i+8:len(b)]))
h ^= k1
h = rol27(h)*prime1 + prime4
}
if i+4 <= end {
h ^= uint64(u32(b[i:i+4:len(b)])) * prime1
h = rol23(h)*prime2 + prime3
i += 4
}
for ; i < end; i++ {
h ^= uint64(b[i]) * prime5
h = rol11(h) * prime1
}
h ^= h >> 33
h *= prime2
h ^= h >> 29
h *= prime3
h ^= h >> 32
return h
}
func writeBlocks(d *Digest, b []byte) int {
v1, v2, v3, v4 := d.v1, d.v2, d.v3, d.v4
n := len(b)
for len(b) >= 32 {
v1 = round(v1, u64(b[0:8:len(b)]))
v2 = round(v2, u64(b[8:16:len(b)]))
v3 = round(v3, u64(b[16:24:len(b)]))
v4 = round(v4, u64(b[24:32:len(b)]))
b = b[32:len(b):len(b)]
}
d.v1, d.v2, d.v3, d.v4 = v1, v2, v3, v4
return n - len(b)
}

15
vendor/github.com/cespare/xxhash/v2/xxhash_safe.go generated vendored
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@ -1,15 +0,0 @@
// +build appengine
// This file contains the safe implementations of otherwise unsafe-using code.
package xxhash
// Sum64String computes the 64-bit xxHash digest of s.
func Sum64String(s string) uint64 {
return Sum64([]byte(s))
}
// WriteString adds more data to d. It always returns len(s), nil.
func (d *Digest) WriteString(s string) (n int, err error) {
return d.Write([]byte(s))
}

46
vendor/github.com/cespare/xxhash/v2/xxhash_unsafe.go generated vendored
View File

@ -1,46 +0,0 @@
// +build !appengine
// This file encapsulates usage of unsafe.
// xxhash_safe.go contains the safe implementations.
package xxhash
import (
"reflect"
"unsafe"
)
// Notes:
//
// See https://groups.google.com/d/msg/golang-nuts/dcjzJy-bSpw/tcZYBzQqAQAJ
// for some discussion about these unsafe conversions.
//
// In the future it's possible that compiler optimizations will make these
// unsafe operations unnecessary: https://golang.org/issue/2205.
//
// Both of these wrapper functions still incur function call overhead since they
// will not be inlined. We could write Go/asm copies of Sum64 and Digest.Write
// for strings to squeeze out a bit more speed. Mid-stack inlining should
// eventually fix this.
// Sum64String computes the 64-bit xxHash digest of s.
// It may be faster than Sum64([]byte(s)) by avoiding a copy.
func Sum64String(s string) uint64 {
var b []byte
bh := (*reflect.SliceHeader)(unsafe.Pointer(&b))
bh.Data = (*reflect.StringHeader)(unsafe.Pointer(&s)).Data
bh.Len = len(s)
bh.Cap = len(s)
return Sum64(b)
}
// WriteString adds more data to d. It always returns len(s), nil.
// It may be faster than Write([]byte(s)) by avoiding a copy.
func (d *Digest) WriteString(s string) (n int, err error) {
var b []byte
bh := (*reflect.SliceHeader)(unsafe.Pointer(&b))
bh.Data = (*reflect.StringHeader)(unsafe.Pointer(&s)).Data
bh.Len = len(s)
bh.Cap = len(s)
return d.Write(b)
}

201
vendor/github.com/coredns/coredns/LICENSE generated vendored
View File

@ -1,201 +0,0 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
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"You" (or "Your") shall mean an individual or Legal Entity
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5. Submission of Contributions. Unless You explicitly state otherwise,
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the terms of any separate license agreement you may have executed
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6. Trademarks. This License does not grant permission to use the trade
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on Your own behalf and on Your sole responsibility, not on behalf
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defend, and hold each Contributor harmless for any liability
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of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
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boilerplate notice, with the fields enclosed by brackets "{}"
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Copyright 2016-2020 The CoreDNS authors and contributors
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
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Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

105
vendor/github.com/coredns/coredns/core/dnsserver/address.go generated vendored
View File

@ -1,105 +0,0 @@
package dnsserver
import (
"fmt"
"net"
"strings"
"github.com/coredns/coredns/plugin"
"github.com/coredns/coredns/plugin/pkg/parse"
"github.com/coredns/coredns/plugin/pkg/transport"
"github.com/miekg/dns"
)
type zoneAddr struct {
Zone string
Port string
Transport string // dns, tls or grpc
IPNet *net.IPNet // if reverse zone this hold the IPNet
Address string // used for bound zoneAddr - validation of overlapping
}
// String returns the string representation of z.
func (z zoneAddr) String() string {
s := z.Transport + "://" + z.Zone + ":" + z.Port
if z.Address != "" {
s += " on " + z.Address
}
return s
}
// normalizeZone parses a zone string into a structured format with separate
// host, and port portions, as well as the original input string.
func normalizeZone(str string) (zoneAddr, error) {
trans, str := parse.Transport(str)
host, port, ipnet, err := plugin.SplitHostPort(str)
if err != nil {
return zoneAddr{}, err
}
if port == "" {
switch trans {
case transport.DNS:
port = Port
case transport.TLS:
port = transport.TLSPort
case transport.GRPC:
port = transport.GRPCPort
case transport.HTTPS:
port = transport.HTTPSPort
}
}
return zoneAddr{Zone: dns.Fqdn(host), Port: port, Transport: trans, IPNet: ipnet}, nil
}
// SplitProtocolHostPort splits a full formed address like "dns://[::1]:53" into parts.
func SplitProtocolHostPort(address string) (protocol string, ip string, port string, err error) {
parts := strings.Split(address, "://")
switch len(parts) {
case 1:
ip, port, err := net.SplitHostPort(parts[0])
return "", ip, port, err
case 2:
ip, port, err := net.SplitHostPort(parts[1])
return parts[0], ip, port, err
default:
return "", "", "", fmt.Errorf("provided value is not in an address format : %s", address)
}
}
type zoneOverlap struct {
registeredAddr map[zoneAddr]zoneAddr // each zoneAddr is registered once by its key
unboundOverlap map[zoneAddr]zoneAddr // the "no bind" equiv ZoneAddr is registered by its original key
}
func newOverlapZone() *zoneOverlap {
return &zoneOverlap{registeredAddr: make(map[zoneAddr]zoneAddr), unboundOverlap: make(map[zoneAddr]zoneAddr)}
}
// registerAndCheck adds a new zoneAddr for validation, it returns information about existing or overlapping with already registered
// we consider that an unbound address is overlapping all bound addresses for same zone, same port
func (zo *zoneOverlap) registerAndCheck(z zoneAddr) (existingZone *zoneAddr, overlappingZone *zoneAddr) {
if exist, ok := zo.registeredAddr[z]; ok {
// exact same zone already registered
return &exist, nil
}
uz := zoneAddr{Zone: z.Zone, Address: "", Port: z.Port, Transport: z.Transport}
if already, ok := zo.unboundOverlap[uz]; ok {
if z.Address == "" {
// current is not bound to an address, but there is already another zone with a bind address registered
return nil, &already
}
if _, ok := zo.registeredAddr[uz]; ok {
// current zone is bound to an address, but there is already an overlapping zone+port with no bind address
return nil, &uz
}
}
// there is no overlap, keep the current zoneAddr for future checks
zo.registeredAddr[z] = z
zo.unboundOverlap[uz] = z
return nil, nil
}

73
vendor/github.com/coredns/coredns/core/dnsserver/config.go generated vendored
View File

@ -1,73 +0,0 @@
package dnsserver
import (
"crypto/tls"
"fmt"
"github.com/coredns/coredns/plugin"
"github.com/caddyserver/caddy"
)
// Config configuration for a single server.
type Config struct {
// The zone of the site.
Zone string
// one or several hostnames to bind the server to.
// defaults to a single empty string that denote the wildcard address
ListenHosts []string
// The port to listen on.
Port string
// Root points to a base directory we find user defined "things".
// First consumer is the file plugin to looks for zone files in this place.
Root string
// Debug controls the panic/recover mechanism that is enabled by default.
Debug bool
// The transport we implement, normally just "dns" over TCP/UDP, but could be
// DNS-over-TLS or DNS-over-gRPC.
Transport string
// If this function is not nil it will be used to further filter access
// to this handler. The primary use is to limit access to a reverse zone
// on a non-octet boundary, i.e. /17
FilterFunc func(string) bool
// TLSConfig when listening for encrypted connections (gRPC, DNS-over-TLS).
TLSConfig *tls.Config
// Plugin stack.
Plugin []plugin.Plugin
// Compiled plugin stack.
pluginChain plugin.Handler
// Plugin interested in announcing that they exist, so other plugin can call methods
// on them should register themselves here. The name should be the name as return by the
// Handler's Name method.
registry map[string]plugin.Handler
}
// keyForConfig build a key for identifying the configs during setup time
func keyForConfig(blocIndex int, blocKeyIndex int) string {
return fmt.Sprintf("%d:%d", blocIndex, blocKeyIndex)
}
// GetConfig gets the Config that corresponds to c.
// If none exist nil is returned.
func GetConfig(c *caddy.Controller) *Config {
ctx := c.Context().(*dnsContext)
key := keyForConfig(c.ServerBlockIndex, c.ServerBlockKeyIndex)
if cfg, ok := ctx.keysToConfigs[key]; ok {
return cfg
}
// we should only get here during tests because directive
// actions typically skip the server blocks where we make
// the configs.
ctx.saveConfig(key, &Config{ListenHosts: []string{""}})
return GetConfig(c)
}

23
vendor/github.com/coredns/coredns/core/dnsserver/https.go generated vendored
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@ -1,23 +0,0 @@
package dnsserver
import (
"net"
"github.com/coredns/coredns/plugin/pkg/nonwriter"
)
// DoHWriter is a nonwriter.Writer that adds more specific LocalAddr and RemoteAddr methods.
type DoHWriter struct {
nonwriter.Writer
// raddr is the remote's address. This can be optionally set.
raddr net.Addr
// laddr is our address. This can be optionally set.
laddr net.Addr
}
// RemoteAddr returns the remote address.
func (d *DoHWriter) RemoteAddr() net.Addr { return d.raddr }
// LocalAddr returns the local address.
func (d *DoHWriter) LocalAddr() net.Addr { return d.laddr }

29
vendor/github.com/coredns/coredns/core/dnsserver/onstartup.go generated vendored
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@ -1,29 +0,0 @@
package dnsserver
import "fmt"
// startUpZones create the text that we show when starting up:
// grpc://example.com.:1055
// example.com.:1053 on 127.0.0.1
func startUpZones(protocol, addr string, zones map[string]*Config) string {
s := ""
for zone := range zones {
// split addr into protocol, IP and Port
_, ip, port, err := SplitProtocolHostPort(addr)
if err != nil {
// this should not happen, but we need to take care of it anyway
s += fmt.Sprintln(protocol + zone + ":" + addr)
continue
}
if ip == "" {
s += fmt.Sprintln(protocol + zone + ":" + port)
continue
}
// if the server is listening on a specific address let's make it visible in the log,
// so one can differentiate between all active listeners
s += fmt.Sprintln(protocol + zone + ":" + port + " on " + ip)
}
return s
}

255
vendor/github.com/coredns/coredns/core/dnsserver/register.go generated vendored
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@ -1,255 +0,0 @@
package dnsserver
import (
"flag"
"fmt"
"net"
"strings"
"time"
"github.com/coredns/coredns/plugin"
"github.com/coredns/coredns/plugin/pkg/dnsutil"
"github.com/coredns/coredns/plugin/pkg/parse"
"github.com/coredns/coredns/plugin/pkg/transport"
"github.com/caddyserver/caddy"
"github.com/caddyserver/caddy/caddyfile"
)
const serverType = "dns"
// Any flags defined here, need to be namespaced to the serverType other
// wise they potentially clash with other server types.
func init() {
flag.StringVar(&Port, serverType+".port", DefaultPort, "Default port")
caddy.RegisterServerType(serverType, caddy.ServerType{
Directives: func() []string { return Directives },
DefaultInput: func() caddy.Input {
return caddy.CaddyfileInput{
Filepath: "Corefile",
Contents: []byte(".:" + Port + " {\nwhoami\nlog\n}\n"),
ServerTypeName: serverType,
}
},
NewContext: newContext,
})
}
func newContext(i *caddy.Instance) caddy.Context {
return &dnsContext{keysToConfigs: make(map[string]*Config)}
}
type dnsContext struct {
keysToConfigs map[string]*Config
// configs is the master list of all site configs.
configs []*Config
}
func (h *dnsContext) saveConfig(key string, cfg *Config) {
h.configs = append(h.configs, cfg)
h.keysToConfigs[key] = cfg
}
// Compile-time check to ensure dnsContext implements the caddy.Context interface
var _ caddy.Context = &dnsContext{}
// InspectServerBlocks make sure that everything checks out before
// executing directives and otherwise prepares the directives to
// be parsed and executed.
func (h *dnsContext) InspectServerBlocks(sourceFile string, serverBlocks []caddyfile.ServerBlock) ([]caddyfile.ServerBlock, error) {
// Normalize and check all the zone names and check for duplicates
for ib, s := range serverBlocks {
for ik, k := range s.Keys {
za, err := normalizeZone(k)
if err != nil {
return nil, err
}
s.Keys[ik] = za.String()
// Save the config to our master list, and key it for lookups.
cfg := &Config{
Zone: za.Zone,
ListenHosts: []string{""},
Port: za.Port,
Transport: za.Transport,
}
keyConfig := keyForConfig(ib, ik)
if za.IPNet == nil {
h.saveConfig(keyConfig, cfg)
continue
}
ones, bits := za.IPNet.Mask.Size()
if (bits-ones)%8 != 0 { // only do this for non-octet boundaries
cfg.FilterFunc = func(s string) bool {
// TODO(miek): strings.ToLower! Slow and allocates new string.
addr := dnsutil.ExtractAddressFromReverse(strings.ToLower(s))
if addr == "" {
return true
}
return za.IPNet.Contains(net.ParseIP(addr))
}
}
h.saveConfig(keyConfig, cfg)
}
}
return serverBlocks, nil
}
// MakeServers uses the newly-created siteConfigs to create and return a list of server instances.
func (h *dnsContext) MakeServers() ([]caddy.Server, error) {
// Now that all Keys and Directives are parsed and initialized
// lets verify that there is no overlap on the zones and addresses to listen for
errValid := h.validateZonesAndListeningAddresses()
if errValid != nil {
return nil, errValid
}
// we must map (group) each config to a bind address
groups, err := groupConfigsByListenAddr(h.configs)
if err != nil {
return nil, err
}
// then we create a server for each group
var servers []caddy.Server
for addr, group := range groups {
// switch on addr
switch tr, _ := parse.Transport(addr); tr {
case transport.DNS:
s, err := NewServer(addr, group)
if err != nil {
return nil, err
}
servers = append(servers, s)
case transport.TLS:
s, err := NewServerTLS(addr, group)
if err != nil {
return nil, err
}
servers = append(servers, s)
case transport.GRPC:
s, err := NewServergRPC(addr, group)
if err != nil {
return nil, err
}
servers = append(servers, s)
case transport.HTTPS:
s, err := NewServerHTTPS(addr, group)
if err != nil {
return nil, err
}
servers = append(servers, s)
}
}
return servers, nil
}
// AddPlugin adds a plugin to a site's plugin stack.
func (c *Config) AddPlugin(m plugin.Plugin) {
c.Plugin = append(c.Plugin, m)
}
// registerHandler adds a handler to a site's handler registration. Handlers
// use this to announce that they exist to other plugin.
func (c *Config) registerHandler(h plugin.Handler) {
if c.registry == nil {
c.registry = make(map[string]plugin.Handler)
}
// Just overwrite...
c.registry[h.Name()] = h
}
// Handler returns the plugin handler that has been added to the config under its name.
// This is useful to inspect if a certain plugin is active in this server.
// Note that this is order dependent and the order is defined in directives.go, i.e. if your plugin
// comes before the plugin you are checking; it will not be there (yet).
func (c *Config) Handler(name string) plugin.Handler {
if c.registry == nil {
return nil
}
if h, ok := c.registry[name]; ok {
return h
}
return nil
}
// Handlers returns a slice of plugins that have been registered. This can be used to
// inspect and interact with registered plugins but cannot be used to remove or add plugins.
// Note that this is order dependent and the order is defined in directives.go, i.e. if your plugin
// comes before the plugin you are checking; it will not be there (yet).
func (c *Config) Handlers() []plugin.Handler {
if c.registry == nil {
return nil
}
hs := make([]plugin.Handler, 0, len(c.registry))
for k := range c.registry {
hs = append(hs, c.registry[k])
}
return hs
}
func (h *dnsContext) validateZonesAndListeningAddresses() error {
//Validate Zone and addresses
checker := newOverlapZone()
for _, conf := range h.configs {
for _, h := range conf.ListenHosts {
// Validate the overlapping of ZoneAddr
akey := zoneAddr{Transport: conf.Transport, Zone: conf.Zone, Address: h, Port: conf.Port}
existZone, overlapZone := checker.registerAndCheck(akey)
if existZone != nil {
return fmt.Errorf("cannot serve %s - it is already defined", akey.String())
}
if overlapZone != nil {
return fmt.Errorf("cannot serve %s - zone overlap listener capacity with %v", akey.String(), overlapZone.String())
}
}
}
return nil
}
// groupSiteConfigsByListenAddr groups site configs by their listen
// (bind) address, so sites that use the same listener can be served
// on the same server instance. The return value maps the listen
// address (what you pass into net.Listen) to the list of site configs.
// This function does NOT vet the configs to ensure they are compatible.
func groupConfigsByListenAddr(configs []*Config) (map[string][]*Config, error) {
groups := make(map[string][]*Config)
for _, conf := range configs {
for _, h := range conf.ListenHosts {
addr, err := net.ResolveTCPAddr("tcp", net.JoinHostPort(h, conf.Port))
if err != nil {
return nil, err
}
addrstr := conf.Transport + "://" + addr.String()
groups[addrstr] = append(groups[addrstr], conf)
}
}
return groups, nil
}
// DefaultPort is the default port.
const DefaultPort = transport.Port
// These "soft defaults" are configurable by
// command line flags, etc.
var (
// Port is the port we listen on by default.
Port = DefaultPort
// GracefulTimeout is the maximum duration of a graceful shutdown.
GracefulTimeout time.Duration
)
var _ caddy.GracefulServer = new(Server)

356
vendor/github.com/coredns/coredns/core/dnsserver/server.go generated vendored
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@ -1,356 +0,0 @@
// Package dnsserver implements all the interfaces from Caddy, so that CoreDNS can be a servertype plugin.
package dnsserver
import (
"context"
"fmt"
"net"
"runtime"
"strings"
"sync"
"time"
"github.com/coredns/coredns/plugin"
"github.com/coredns/coredns/plugin/metrics/vars"
"github.com/coredns/coredns/plugin/pkg/edns"
"github.com/coredns/coredns/plugin/pkg/log"
"github.com/coredns/coredns/plugin/pkg/rcode"
"github.com/coredns/coredns/plugin/pkg/reuseport"
"github.com/coredns/coredns/plugin/pkg/trace"
"github.com/coredns/coredns/plugin/pkg/transport"
"github.com/coredns/coredns/request"
"github.com/caddyserver/caddy"
"github.com/miekg/dns"
ot "github.com/opentracing/opentracing-go"
)
// Server represents an instance of a server, which serves
// DNS requests at a particular address (host and port). A
// server is capable of serving numerous zones on
// the same address and the listener may be stopped for
// graceful termination (POSIX only).
type Server struct {
Addr string // Address we listen on
server [2]*dns.Server // 0 is a net.Listener, 1 is a net.PacketConn (a *UDPConn) in our case.
m sync.Mutex // protects the servers
zones map[string]*Config // zones keyed by their address
dnsWg sync.WaitGroup // used to wait on outstanding connections
graceTimeout time.Duration // the maximum duration of a graceful shutdown
trace trace.Trace // the trace plugin for the server
debug bool // disable recover()
classChaos bool // allow non-INET class queries
}
// NewServer returns a new CoreDNS server and compiles all plugins in to it. By default CH class
// queries are blocked unless queries from enableChaos are loaded.
func NewServer(addr string, group []*Config) (*Server, error) {
s := &Server{
Addr: addr,
zones: make(map[string]*Config),
graceTimeout: 5 * time.Second,
}
// We have to bound our wg with one increment
// to prevent a "race condition" that is hard-coded
// into sync.WaitGroup.Wait() - basically, an add
// with a positive delta must be guaranteed to
// occur before Wait() is called on the wg.
// In a way, this kind of acts as a safety barrier.
s.dnsWg.Add(1)
for _, site := range group {
if site.Debug {
s.debug = true
log.D.Set()
} else {
// When reloading we need to explicitly disable debug logging if it is now disabled.
s.debug = false
log.D.Clear()
}
// set the config per zone
s.zones[site.Zone] = site
// compile custom plugin for everything
var stack plugin.Handler
for i := len(site.Plugin) - 1; i >= 0; i-- {
stack = site.Plugin[i](stack)
// register the *handler* also
site.registerHandler(stack)
if s.trace == nil && stack.Name() == "trace" {
// we have to stash away the plugin, not the
// Tracer object, because the Tracer won't be initialized yet
if t, ok := stack.(trace.Trace); ok {
s.trace = t
}
}
// Unblock CH class queries when any of these plugins are loaded.
if _, ok := EnableChaos[stack.Name()]; ok {
s.classChaos = true
}
}
site.pluginChain = stack
}
return s, nil
}
// Compile-time check to ensure Server implements the caddy.GracefulServer interface
var _ caddy.GracefulServer = &Server{}
// Serve starts the server with an existing listener. It blocks until the server stops.
// This implements caddy.TCPServer interface.
func (s *Server) Serve(l net.Listener) error {
s.m.Lock()
s.server[tcp] = &dns.Server{Listener: l, Net: "tcp", Handler: dns.HandlerFunc(func(w dns.ResponseWriter, r *dns.Msg) {
ctx := context.WithValue(context.Background(), Key{}, s)
s.ServeDNS(ctx, w, r)
})}
s.m.Unlock()
return s.server[tcp].ActivateAndServe()
}
// ServePacket starts the server with an existing packetconn. It blocks until the server stops.
// This implements caddy.UDPServer interface.
func (s *Server) ServePacket(p net.PacketConn) error {
s.m.Lock()
s.server[udp] = &dns.Server{PacketConn: p, Net: "udp", Handler: dns.HandlerFunc(func(w dns.ResponseWriter, r *dns.Msg) {
ctx := context.WithValue(context.Background(), Key{}, s)
s.ServeDNS(ctx, w, r)
})}
s.m.Unlock()
return s.server[udp].ActivateAndServe()
}
// Listen implements caddy.TCPServer interface.
func (s *Server) Listen() (net.Listener, error) {
l, err := reuseport.Listen("tcp", s.Addr[len(transport.DNS+"://"):])
if err != nil {
return nil, err
}
return l, nil
}
// WrapListener Listen implements caddy.GracefulServer interface.
func (s *Server) WrapListener(ln net.Listener) net.Listener {
return ln
}
// ListenPacket implements caddy.UDPServer interface.
func (s *Server) ListenPacket() (net.PacketConn, error) {
p, err := reuseport.ListenPacket("udp", s.Addr[len(transport.DNS+"://"):])
if err != nil {
return nil, err
}
return p, nil
}
// Stop stops the server. It blocks until the server is
// totally stopped. On POSIX systems, it will wait for
// connections to close (up to a max timeout of a few
// seconds); on Windows it will close the listener
// immediately.
// This implements Caddy.Stopper interface.
func (s *Server) Stop() (err error) {
if runtime.GOOS != "windows" {
// force connections to close after timeout
done := make(chan struct{})
go func() {
s.dnsWg.Done() // decrement our initial increment used as a barrier
s.dnsWg.Wait()
close(done)
}()
// Wait for remaining connections to finish or
// force them all to close after timeout
select {
case <-time.After(s.graceTimeout):
case <-done:
}
}
// Close the listener now; this stops the server without delay
s.m.Lock()
for _, s1 := range s.server {
// We might not have started and initialized the full set of servers
if s1 != nil {
err = s1.Shutdown()
}
}
s.m.Unlock()
return
}
// Address together with Stop() implement caddy.GracefulServer.
func (s *Server) Address() string { return s.Addr }
// ServeDNS is the entry point for every request to the address that s
// is bound to. It acts as a multiplexer for the requests zonename as
// defined in the request so that the correct zone
// (configuration and plugin stack) will handle the request.
func (s *Server) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) {
// The default dns.Mux checks the question section size, but we have our
// own mux here. Check if we have a question section. If not drop them here.
if r == nil || len(r.Question) == 0 {
errorAndMetricsFunc(s.Addr, w, r, dns.RcodeServerFailure)
return
}
if !s.debug {
defer func() {
// In case the user doesn't enable error plugin, we still
// need to make sure that we stay alive up here
if rec := recover(); rec != nil {
log.Errorf("Recovered from panic in server: %q", s.Addr)
vars.Panic.Inc()
errorAndMetricsFunc(s.Addr, w, r, dns.RcodeServerFailure)
}
}()
}
if !s.classChaos && r.Question[0].Qclass != dns.ClassINET {
errorAndMetricsFunc(s.Addr, w, r, dns.RcodeRefused)
return
}
if m, err := edns.Version(r); err != nil { // Wrong EDNS version, return at once.
w.WriteMsg(m)
return
}
// Wrap the response writer in a ScrubWriter so we automatically make the reply fit in the client's buffer.
w = request.NewScrubWriter(r, w)
q := strings.ToLower(r.Question[0].Name)
var (
off int
end bool
dshandler *Config
)
for {
if h, ok := s.zones[q[off:]]; ok {
if r.Question[0].Qtype != dns.TypeDS {
if h.FilterFunc == nil {
rcode, _ := h.pluginChain.ServeDNS(ctx, w, r)
if !plugin.ClientWrite(rcode) {
errorFunc(s.Addr, w, r, rcode)
}
return
}
// FilterFunc is set, call it to see if we should use this handler.
// This is given to full query name.
if h.FilterFunc(q) {
rcode, _ := h.pluginChain.ServeDNS(ctx, w, r)
if !plugin.ClientWrite(rcode) {
errorFunc(s.Addr, w, r, rcode)
}
return
}
}
// The type is DS, keep the handler, but keep on searching as maybe we are serving
// the parent as well and the DS should be routed to it - this will probably *misroute* DS
// queries to a possibly grand parent, but there is no way for us to know at this point
// if there is an actual delegation from grandparent -> parent -> zone.
// In all fairness: direct DS queries should not be needed.
dshandler = h
}
off, end = dns.NextLabel(q, off)
if end {
break
}
}
if r.Question[0].Qtype == dns.TypeDS && dshandler != nil && dshandler.pluginChain != nil {
// DS request, and we found a zone, use the handler for the query.
rcode, _ := dshandler.pluginChain.ServeDNS(ctx, w, r)
if !plugin.ClientWrite(rcode) {
errorFunc(s.Addr, w, r, rcode)
}
return
}
// Wildcard match, if we have found nothing try the root zone as a last resort.
if h, ok := s.zones["."]; ok && h.pluginChain != nil {
rcode, _ := h.pluginChain.ServeDNS(ctx, w, r)
if !plugin.ClientWrite(rcode) {
errorFunc(s.Addr, w, r, rcode)
}
return
}
// Still here? Error out with REFUSED.
errorAndMetricsFunc(s.Addr, w, r, dns.RcodeRefused)
}
// OnStartupComplete lists the sites served by this server
// and any relevant information, assuming Quiet is false.
func (s *Server) OnStartupComplete() {
if Quiet {
return
}
out := startUpZones("", s.Addr, s.zones)
if out != "" {
fmt.Print(out)
}
}
// Tracer returns the tracer in the server if defined.
func (s *Server) Tracer() ot.Tracer {
if s.trace == nil {
return nil
}
return s.trace.Tracer()
}
// errorFunc responds to an DNS request with an error.
func errorFunc(server string, w dns.ResponseWriter, r *dns.Msg, rc int) {
state := request.Request{W: w, Req: r}
answer := new(dns.Msg)
answer.SetRcode(r, rc)
state.SizeAndDo(answer)
w.WriteMsg(answer)
}
func errorAndMetricsFunc(server string, w dns.ResponseWriter, r *dns.Msg, rc int) {
state := request.Request{W: w, Req: r}
answer := new(dns.Msg)
answer.SetRcode(r, rc)
state.SizeAndDo(answer)
vars.Report(server, state, vars.Dropped, rcode.ToString(rc), answer.Len(), time.Now())
w.WriteMsg(answer)
}
const (
tcp = 0
udp = 1
)
// Key is the context key for the current server added to the context.
type Key struct{}
// EnableChaos is a map with plugin names for which we should open CH class queries as we block these by default.
var EnableChaos = map[string]struct{}{
"chaos": {},
"forward": {},
"proxy": {},
}
// Quiet mode will not show any informative output on initialization.
var Quiet bool

176
vendor/github.com/coredns/coredns/core/dnsserver/server_grpc.go generated vendored
View File

@ -1,176 +0,0 @@
package dnsserver
import (
"context"
"crypto/tls"
"errors"
"fmt"
"net"
"github.com/coredns/coredns/pb"
"github.com/coredns/coredns/plugin/pkg/reuseport"
"github.com/coredns/coredns/plugin/pkg/transport"
"github.com/caddyserver/caddy"
"github.com/grpc-ecosystem/grpc-opentracing/go/otgrpc"
"github.com/miekg/dns"
"github.com/opentracing/opentracing-go"
"google.golang.org/grpc"
"google.golang.org/grpc/peer"
)
// ServergRPC represents an instance of a DNS-over-gRPC server.
type ServergRPC struct {
*Server
grpcServer *grpc.Server
listenAddr net.Addr
tlsConfig *tls.Config
}
// NewServergRPC returns a new CoreDNS GRPC server and compiles all plugin in to it.
func NewServergRPC(addr string, group []*Config) (*ServergRPC, error) {
s, err := NewServer(addr, group)
if err != nil {
return nil, err
}
// The *tls* plugin must make sure that multiple conflicting
// TLS configuration return an error: it can only be specified once.
var tlsConfig *tls.Config
for _, conf := range s.zones {
// Should we error if some configs *don't* have TLS?
tlsConfig = conf.TLSConfig
}
return &ServergRPC{Server: s, tlsConfig: tlsConfig}, nil
}
// Compile-time check to ensure Server implements the caddy.GracefulServer interface
var _ caddy.GracefulServer = &Server{}
// Serve implements caddy.TCPServer interface.
func (s *ServergRPC) Serve(l net.Listener) error {
s.m.Lock()
s.listenAddr = l.Addr()
s.m.Unlock()
if s.Tracer() != nil {
onlyIfParent := func(parentSpanCtx opentracing.SpanContext, method string, req, resp interface{}) bool {
return parentSpanCtx != nil
}
intercept := otgrpc.OpenTracingServerInterceptor(s.Tracer(), otgrpc.IncludingSpans(onlyIfParent))
s.grpcServer = grpc.NewServer(grpc.UnaryInterceptor(intercept))
} else {
s.grpcServer = grpc.NewServer()
}
pb.RegisterDnsServiceServer(s.grpcServer, s)
if s.tlsConfig != nil {
l = tls.NewListener(l, s.tlsConfig)
}
return s.grpcServer.Serve(l)
}
// ServePacket implements caddy.UDPServer interface.
func (s *ServergRPC) ServePacket(p net.PacketConn) error { return nil }
// Listen implements caddy.TCPServer interface.
func (s *ServergRPC) Listen() (net.Listener, error) {
l, err := reuseport.Listen("tcp", s.Addr[len(transport.GRPC+"://"):])
if err != nil {
return nil, err
}
return l, nil
}
// ListenPacket implements caddy.UDPServer interface.
func (s *ServergRPC) ListenPacket() (net.PacketConn, error) { return nil, nil }
// OnStartupComplete lists the sites served by this server
// and any relevant information, assuming Quiet is false.
func (s *ServergRPC) OnStartupComplete() {
if Quiet {
return
}
out := startUpZones(transport.GRPC+"://", s.Addr, s.zones)
if out != "" {
fmt.Print(out)
}
}
// Stop stops the server. It blocks until the server is
// totally stopped.
func (s *ServergRPC) Stop() (err error) {
s.m.Lock()
defer s.m.Unlock()
if s.grpcServer != nil {
s.grpcServer.GracefulStop()
}
return
}
// Query is the main entry-point into the gRPC server. From here we call ServeDNS like
// any normal server. We use a custom responseWriter to pick up the bytes we need to write
// back to the client as a protobuf.
func (s *ServergRPC) Query(ctx context.Context, in *pb.DnsPacket) (*pb.DnsPacket, error) {
msg := new(dns.Msg)
err := msg.Unpack(in.Msg)
if err != nil {
return nil, err
}
p, ok := peer.FromContext(ctx)
if !ok {
return nil, errors.New("no peer in gRPC context")
}
a, ok := p.Addr.(*net.TCPAddr)
if !ok {
return nil, fmt.Errorf("no TCP peer in gRPC context: %v", p.Addr)
}
w := &gRPCresponse{localAddr: s.listenAddr, remoteAddr: a, Msg: msg}
dnsCtx := context.WithValue(ctx, Key{}, s.Server)
s.ServeDNS(dnsCtx, w, msg)
packed, err := w.Msg.Pack()
if err != nil {
return nil, err
}
return &pb.DnsPacket{Msg: packed}, nil
}
// Shutdown stops the server (non gracefully).
func (s *ServergRPC) Shutdown() error {
if s.grpcServer != nil {
s.grpcServer.Stop()
}
return nil
}
type gRPCresponse struct {
localAddr net.Addr
remoteAddr net.Addr
Msg *dns.Msg
}
// Write is the hack that makes this work. It does not actually write the message
// but returns the bytes we need to write in r. We can then pick this up in Query
// and write a proper protobuf back to the client.
func (r *gRPCresponse) Write(b []byte) (int, error) {
r.Msg = new(dns.Msg)
return len(b), r.Msg.Unpack(b)
}
// These methods implement the dns.ResponseWriter interface from Go DNS.
func (r *gRPCresponse) Close() error { return nil }
func (r *gRPCresponse) TsigStatus() error { return nil }
func (r *gRPCresponse) TsigTimersOnly(b bool) {}
func (r *gRPCresponse) Hijack() {}
func (r *gRPCresponse) LocalAddr() net.Addr { return r.localAddr }
func (r *gRPCresponse) RemoteAddr() net.Addr { return r.remoteAddr }
func (r *gRPCresponse) WriteMsg(m *dns.Msg) error { r.Msg = m; return nil }

155
vendor/github.com/coredns/coredns/core/dnsserver/server_https.go generated vendored
View File

@ -1,155 +0,0 @@
package dnsserver
import (
"context"
"crypto/tls"
"fmt"
"net"
"net/http"
"strconv"
"time"
"github.com/coredns/coredns/plugin/pkg/dnsutil"
"github.com/coredns/coredns/plugin/pkg/doh"
"github.com/coredns/coredns/plugin/pkg/response"
"github.com/coredns/coredns/plugin/pkg/reuseport"
"github.com/coredns/coredns/plugin/pkg/transport"
"github.com/caddyserver/caddy"
)
// ServerHTTPS represents an instance of a DNS-over-HTTPS server.
type ServerHTTPS struct {
*Server
httpsServer *http.Server
listenAddr net.Addr
tlsConfig *tls.Config
}
// NewServerHTTPS returns a new CoreDNS GRPC server and compiles all plugins in to it.
func NewServerHTTPS(addr string, group []*Config) (*ServerHTTPS, error) {
s, err := NewServer(addr, group)
if err != nil {
return nil, err
}
// The *tls* plugin must make sure that multiple conflicting
// TLS configuration return an error: it can only be specified once.
var tlsConfig *tls.Config
for _, conf := range s.zones {
// Should we error if some configs *don't* have TLS?
tlsConfig = conf.TLSConfig
}
sh := &ServerHTTPS{Server: s, tlsConfig: tlsConfig, httpsServer: new(http.Server)}
sh.httpsServer.Handler = sh
return sh, nil
}
// Compile-time check to ensure Server implements the caddy.GracefulServer interface
var _ caddy.GracefulServer = &Server{}
// Serve implements caddy.TCPServer interface.
func (s *ServerHTTPS) Serve(l net.Listener) error {
s.m.Lock()
s.listenAddr = l.Addr()
s.m.Unlock()
if s.tlsConfig != nil {
l = tls.NewListener(l, s.tlsConfig)
}
return s.httpsServer.Serve(l)
}
// ServePacket implements caddy.UDPServer interface.
func (s *ServerHTTPS) ServePacket(p net.PacketConn) error { return nil }
// Listen implements caddy.TCPServer interface.
func (s *ServerHTTPS) Listen() (net.Listener, error) {
l, err := reuseport.Listen("tcp", s.Addr[len(transport.HTTPS+"://"):])
if err != nil {
return nil, err
}
return l, nil
}
// ListenPacket implements caddy.UDPServer interface.
func (s *ServerHTTPS) ListenPacket() (net.PacketConn, error) { return nil, nil }
// OnStartupComplete lists the sites served by this server
// and any relevant information, assuming Quiet is false.
func (s *ServerHTTPS) OnStartupComplete() {
if Quiet {
return
}
out := startUpZones(transport.HTTPS+"://", s.Addr, s.zones)
if out != "" {
fmt.Print(out)
}
}
// Stop stops the server. It blocks until the server is totally stopped.
func (s *ServerHTTPS) Stop() error {
s.m.Lock()
defer s.m.Unlock()
if s.httpsServer != nil {
s.httpsServer.Shutdown(context.Background())
}
return nil
}
// ServeHTTP is the handler that gets the HTTP request and converts to the dns format, calls the plugin
// chain, converts it back and write it to the client.
func (s *ServerHTTPS) ServeHTTP(w http.ResponseWriter, r *http.Request) {
if r.URL.Path != doh.Path {
http.Error(w, "", http.StatusNotFound)
return
}
msg, err := doh.RequestToMsg(r)
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
// Create a DoHWriter with the correct addresses in it.
h, p, _ := net.SplitHostPort(r.RemoteAddr)
port, _ := strconv.Atoi(p)
dw := &DoHWriter{laddr: s.listenAddr, raddr: &net.TCPAddr{IP: net.ParseIP(h), Port: port}}
// We just call the normal chain handler - all error handling is done there.
// We should expect a packet to be returned that we can send to the client.
ctx := context.WithValue(context.Background(), Key{}, s.Server)
s.ServeDNS(ctx, dw, msg)
// See section 4.2.1 of RFC 8484.
// We are using code 500 to indicate an unexpected situation when the chain
// handler has not provided any response message.
if dw.Msg == nil {
http.Error(w, "No response", http.StatusInternalServerError)
return
}
buf, _ := dw.Msg.Pack()
mt, _ := response.Typify(dw.Msg, time.Now().UTC())
age := dnsutil.MinimalTTL(dw.Msg, mt)
w.Header().Set("Content-Type", doh.MimeType)
w.Header().Set("Cache-Control", fmt.Sprintf("max-age=%f", age.Seconds()))
w.Header().Set("Content-Length", strconv.Itoa(len(buf)))
w.WriteHeader(http.StatusOK)
w.Write(buf)
}
// Shutdown stops the server (non gracefully).
func (s *ServerHTTPS) Shutdown() error {
if s.httpsServer != nil {
s.httpsServer.Shutdown(context.Background())
}
return nil
}

86
vendor/github.com/coredns/coredns/core/dnsserver/server_tls.go generated vendored
View File

@ -1,86 +0,0 @@
package dnsserver
import (
"context"
"crypto/tls"
"fmt"
"net"
"github.com/coredns/coredns/plugin/pkg/reuseport"
"github.com/coredns/coredns/plugin/pkg/transport"
"github.com/caddyserver/caddy"
"github.com/miekg/dns"
)
// ServerTLS represents an instance of a TLS-over-DNS-server.
type ServerTLS struct {
*Server
tlsConfig *tls.Config
}
// NewServerTLS returns a new CoreDNS TLS server and compiles all plugin in to it.
func NewServerTLS(addr string, group []*Config) (*ServerTLS, error) {
s, err := NewServer(addr, group)
if err != nil {
return nil, err
}
// The *tls* plugin must make sure that multiple conflicting
// TLS configuration return an error: it can only be specified once.
var tlsConfig *tls.Config
for _, conf := range s.zones {
// Should we error if some configs *don't* have TLS?
tlsConfig = conf.TLSConfig
}
return &ServerTLS{Server: s, tlsConfig: tlsConfig}, nil
}
// Compile-time check to ensure Server implements the caddy.GracefulServer interface
var _ caddy.GracefulServer = &Server{}
// Serve implements caddy.TCPServer interface.
func (s *ServerTLS) Serve(l net.Listener) error {
s.m.Lock()
if s.tlsConfig != nil {
l = tls.NewListener(l, s.tlsConfig)
}
// Only fill out the TCP server for this one.
s.server[tcp] = &dns.Server{Listener: l, Net: "tcp-tls", Handler: dns.HandlerFunc(func(w dns.ResponseWriter, r *dns.Msg) {
ctx := context.WithValue(context.Background(), Key{}, s.Server)
s.ServeDNS(ctx, w, r)
})}
s.m.Unlock()
return s.server[tcp].ActivateAndServe()
}
// ServePacket implements caddy.UDPServer interface.
func (s *ServerTLS) ServePacket(p net.PacketConn) error { return nil }
// Listen implements caddy.TCPServer interface.
func (s *ServerTLS) Listen() (net.Listener, error) {
l, err := reuseport.Listen("tcp", s.Addr[len(transport.TLS+"://"):])
if err != nil {
return nil, err
}
return l, nil
}
// ListenPacket implements caddy.UDPServer interface.
func (s *ServerTLS) ListenPacket() (net.PacketConn, error) { return nil, nil }
// OnStartupComplete lists the sites served by this server
// and any relevant information, assuming Quiet is false.
func (s *ServerTLS) OnStartupComplete() {
if Quiet {
return
}
out := startUpZones(transport.TLS+"://", s.Addr, s.zones)
if out != "" {
fmt.Print(out)
}
}

58
vendor/github.com/coredns/coredns/core/dnsserver/zdirectives.go generated vendored
View File

@ -1,58 +0,0 @@
// generated by directives_generate.go; DO NOT EDIT
package dnsserver
// Directives are registered in the order they should be
// executed.
//
// Ordering is VERY important. Every plugin will
// feel the effects of all other plugin below
// (after) them during a request, but they must not
// care what plugin above them are doing.
var Directives = []string{
"metadata",
"cancel",
"tls",
"reload",
"nsid",
"bufsize",
"root",
"bind",
"debug",
"trace",
"ready",
"health",
"pprof",
"prometheus",
"errors",
"log",
"dnstap",
"acl",
"any",
"chaos",
"loadbalance",
"cache",
"rewrite",
"dnssec",
"autopath",
"template",
"transfer",
"hosts",
"route53",
"azure",
"clouddns",
"federation",
"k8s_external",
"kubernetes",
"file",
"auto",
"secondary",
"etcd",
"loop",
"forward",
"grpc",
"erratic",
"whoami",
"on",
"sign",
}

213
vendor/github.com/coredns/coredns/coremain/run.go generated vendored
View File

@ -1,213 +0,0 @@
// Package coremain contains the functions for starting CoreDNS.
package coremain
import (
"flag"
"fmt"
"io/ioutil"
"log"
"os"
"runtime"
"strings"
"github.com/coredns/coredns/core/dnsserver"
"github.com/caddyserver/caddy"
)
func init() {
caddy.DefaultConfigFile = "Corefile"
caddy.Quiet = true // don't show init stuff from caddy
setVersion()
flag.StringVar(&conf, "conf", "", "Corefile to load (default \""+caddy.DefaultConfigFile+"\")")
flag.BoolVar(&plugins, "plugins", false, "List installed plugins")
flag.StringVar(&caddy.PidFile, "pidfile", "", "Path to write pid file")
flag.BoolVar(&version, "version", false, "Show version")
flag.BoolVar(&dnsserver.Quiet, "quiet", false, "Quiet mode (no initialization output)")
caddy.RegisterCaddyfileLoader("flag", caddy.LoaderFunc(confLoader))
caddy.SetDefaultCaddyfileLoader("default", caddy.LoaderFunc(defaultLoader))
caddy.AppName = coreName
caddy.AppVersion = CoreVersion
}
// Run is CoreDNS's main() function.
func Run() {
caddy.TrapSignals()
// Reset flag.CommandLine to get rid of unwanted flags for instance from glog (used in kubernetes).
// And read the ones we want to keep.
flag.VisitAll(func(f *flag.Flag) {
if _, ok := flagsBlacklist[f.Name]; ok {
return
}
flagsToKeep = append(flagsToKeep, f)
})
flag.CommandLine = flag.NewFlagSet(os.Args[0], flag.ExitOnError)
for _, f := range flagsToKeep {
flag.Var(f.Value, f.Name, f.Usage)
}
flag.Parse()
if len(flag.Args()) > 0 {
mustLogFatal(fmt.Errorf("extra command line arguments: %s", flag.Args()))
}
log.SetOutput(os.Stdout)
log.SetFlags(0) // Set to 0 because we're doing our own time, with timezone
if version {
showVersion()
os.Exit(0)
}
if plugins {
fmt.Println(caddy.DescribePlugins())
os.Exit(0)
}
// Get Corefile input
corefile, err := caddy.LoadCaddyfile(serverType)
if err != nil {
mustLogFatal(err)
}
// Start your engines
instance, err := caddy.Start(corefile)
if err != nil {
mustLogFatal(err)
}
if !dnsserver.Quiet {
showVersion()
}
// Twiddle your thumbs
instance.Wait()
}
// mustLogFatal wraps log.Fatal() in a way that ensures the
// output is always printed to stderr so the user can see it
// if the user is still there, even if the process log was not
// enabled. If this process is an upgrade, however, and the user
// might not be there anymore, this just logs to the process
// log and exits.
func mustLogFatal(args ...interface{}) {
if !caddy.IsUpgrade() {
log.SetOutput(os.Stderr)
}
log.Fatal(args...)
}
// confLoader loads the Caddyfile using the -conf flag.
func confLoader(serverType string) (caddy.Input, error) {
if conf == "" {
return nil, nil
}
if conf == "stdin" {
return caddy.CaddyfileFromPipe(os.Stdin, serverType)
}
contents, err := ioutil.ReadFile(conf)
if err != nil {
return nil, err
}
return caddy.CaddyfileInput{
Contents: contents,
Filepath: conf,
ServerTypeName: serverType,
}, nil
}
// defaultLoader loads the Corefile from the current working directory.
func defaultLoader(serverType string) (caddy.Input, error) {
contents, err := ioutil.ReadFile(caddy.DefaultConfigFile)
if err != nil {
if os.IsNotExist(err) {
return nil, nil
}
return nil, err
}
return caddy.CaddyfileInput{
Contents: contents,
Filepath: caddy.DefaultConfigFile,
ServerTypeName: serverType,
}, nil
}
// showVersion prints the version that is starting.
func showVersion() {
fmt.Print(versionString())
fmt.Print(releaseString())
if devBuild && gitShortStat != "" {
fmt.Printf("%s\n%s\n", gitShortStat, gitFilesModified)
}
}
// versionString returns the CoreDNS version as a string.
func versionString() string {
return fmt.Sprintf("%s-%s\n", caddy.AppName, caddy.AppVersion)
}
// releaseString returns the release information related to CoreDNS version:
// <OS>/<ARCH>, <go version>, <commit>
// e.g.,
// linux/amd64, go1.8.3, a6d2d7b5
func releaseString() string {
return fmt.Sprintf("%s/%s, %s, %s\n", runtime.GOOS, runtime.GOARCH, runtime.Version(), GitCommit)
}
// setVersion figures out the version information
// based on variables set by -ldflags.
func setVersion() {
// A development build is one that's not at a tag or has uncommitted changes
devBuild = gitTag == "" || gitShortStat != ""
// Only set the appVersion if -ldflags was used
if gitNearestTag != "" || gitTag != "" {
if devBuild && gitNearestTag != "" {
appVersion = fmt.Sprintf("%s (+%s %s)", strings.TrimPrefix(gitNearestTag, "v"), GitCommit, buildDate)
} else if gitTag != "" {
appVersion = strings.TrimPrefix(gitTag, "v")
}
}
}
// Flags that control program flow or startup
var (
conf string
version bool
plugins bool
)
// Build information obtained with the help of -ldflags
var (
appVersion = "(untracked dev build)" // inferred at startup
devBuild = true // inferred at startup
buildDate string // date -u
gitTag string // git describe --exact-match HEAD 2> /dev/null
gitNearestTag string // git describe --abbrev=0 --tags HEAD
gitShortStat string // git diff-index --shortstat
gitFilesModified string // git diff-index --name-only HEAD
// Gitcommit contains the commit where we built CoreDNS from.
GitCommit string
)
// flagsBlacklist removes flags with these names from our flagset.
var flagsBlacklist = map[string]struct{}{
"logtostderr": {},
"alsologtostderr": {},
"v": {},
"stderrthreshold": {},
"vmodule": {},
"log_backtrace_at": {},
"log_dir": {},
}
var flagsToKeep []*flag.Flag

8
vendor/github.com/coredns/coredns/coremain/version.go generated vendored
View File

@ -1,8 +0,0 @@
package coremain
// Various CoreDNS constants.
const (
CoreVersion = "1.6.9"
coreName = "CoreDNS"
serverType = "dns"
)

13
vendor/github.com/coredns/coredns/pb/Makefile generated vendored
View File

@ -1,13 +0,0 @@
# Generate the Go files from the dns.proto protobuf, you need the utilities
# from: https://github.com/golang/protobuf to make this work.
# The generate dns.pb.go is checked into git, so for normal builds we don't need
# to run this generation step.
all: dns.pb.go
dns.pb.go: dns.proto
protoc --go_out=plugins=grpc:. dns.proto
.PHONY: clean
clean:
rm dns.pb.go

156
vendor/github.com/coredns/coredns/pb/dns.pb.go generated vendored
View File

@ -1,156 +0,0 @@
// Code generated by protoc-gen-go. DO NOT EDIT.
// source: dns.proto
package pb
import (
context "context"
fmt "fmt"
math "math"
proto "github.com/golang/protobuf/proto"
grpc "google.golang.org/grpc"
)
// Reference imports to suppress errors if they are not otherwise used.
var _ = proto.Marshal
var _ = fmt.Errorf
var _ = math.Inf
/* Miek: disabled this manually, because I don't know what the heck */
/*
// This is a compile-time assertion to ensure that this generated file
// is compatible with the proto package it is being compiled against.
// A compilation error at this line likely means your copy of the
// proto package needs to be updated.
const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
*/
type DnsPacket struct {
Msg []byte `protobuf:"bytes,1,opt,name=msg,proto3" json:"msg,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *DnsPacket) Reset() { *m = DnsPacket{} }
func (m *DnsPacket) String() string { return proto.CompactTextString(m) }
func (*DnsPacket) ProtoMessage() {}
func (*DnsPacket) Descriptor() ([]byte, []int) {
return fileDescriptor_638ff8d8aaf3d8ae, []int{0}
}
func (m *DnsPacket) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_DnsPacket.Unmarshal(m, b)
}
func (m *DnsPacket) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_DnsPacket.Marshal(b, m, deterministic)
}
func (m *DnsPacket) XXX_Merge(src proto.Message) {
xxx_messageInfo_DnsPacket.Merge(m, src)
}
func (m *DnsPacket) XXX_Size() int {
return xxx_messageInfo_DnsPacket.Size(m)
}
func (m *DnsPacket) XXX_DiscardUnknown() {
xxx_messageInfo_DnsPacket.DiscardUnknown(m)
}
var xxx_messageInfo_DnsPacket proto.InternalMessageInfo
func (m *DnsPacket) GetMsg() []byte {
if m != nil {
return m.Msg
}
return nil
}
func init() {
proto.RegisterType((*DnsPacket)(nil), "coredns.dns.DnsPacket")
}
func init() { proto.RegisterFile("dns.proto", fileDescriptor_638ff8d8aaf3d8ae) }
var fileDescriptor_638ff8d8aaf3d8ae = []byte{
// 120 bytes of a gzipped FileDescriptorProto
0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0xe2, 0x4c, 0xc9, 0x2b, 0xd6,
0x2b, 0x28, 0xca, 0x2f, 0xc9, 0x17, 0xe2, 0x4e, 0xce, 0x2f, 0x4a, 0x05, 0x71, 0x53, 0xf2, 0x8a,
0x95, 0x64, 0xb9, 0x38, 0x5d, 0xf2, 0x8a, 0x03, 0x12, 0x93, 0xb3, 0x53, 0x4b, 0x84, 0x04, 0xb8,
0x98, 0x73, 0x8b, 0xd3, 0x25, 0x18, 0x15, 0x18, 0x35, 0x78, 0x82, 0x40, 0x4c, 0x23, 0x57, 0x2e,
0x2e, 0x97, 0xbc, 0xe2, 0xe0, 0xd4, 0xa2, 0xb2, 0xcc, 0xe4, 0x54, 0x21, 0x73, 0x2e, 0xd6, 0xc0,
0xd2, 0xd4, 0xa2, 0x4a, 0x21, 0x31, 0x3d, 0x24, 0x33, 0xf4, 0xe0, 0x06, 0x48, 0xe1, 0x10, 0x77,
0x62, 0x89, 0x62, 0x2a, 0x48, 0x4a, 0x62, 0x03, 0xdb, 0x6f, 0x0c, 0x08, 0x00, 0x00, 0xff, 0xff,
0xf5, 0xd1, 0x3f, 0x26, 0x8c, 0x00, 0x00, 0x00,
}
// Reference imports to suppress errors if they are not otherwise used.
var _ context.Context
var _ grpc.ClientConn
// This is a compile-time assertion to ensure that this generated file
// is compatible with the grpc package it is being compiled against.
const _ = grpc.SupportPackageIsVersion4
// DnsServiceClient is the client API for DnsService service.
//
// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
type DnsServiceClient interface {
Query(ctx context.Context, in *DnsPacket, opts ...grpc.CallOption) (*DnsPacket, error)
}
type dnsServiceClient struct {
cc *grpc.ClientConn
}
func NewDnsServiceClient(cc *grpc.ClientConn) DnsServiceClient {
return &dnsServiceClient{cc}
}
func (c *dnsServiceClient) Query(ctx context.Context, in *DnsPacket, opts ...grpc.CallOption) (*DnsPacket, error) {
out := new(DnsPacket)
err := c.cc.Invoke(ctx, "/coredns.dns.DnsService/Query", in, out, opts...)
if err != nil {
return nil, err
}
return out, nil
}
// DnsServiceServer is the server API for DnsService service.
type DnsServiceServer interface {
Query(context.Context, *DnsPacket) (*DnsPacket, error)
}
func RegisterDnsServiceServer(s *grpc.Server, srv DnsServiceServer) {
s.RegisterService(&_DnsService_serviceDesc, srv)
}
func _DnsService_Query_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(DnsPacket)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(DnsServiceServer).Query(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: "/coredns.dns.DnsService/Query",
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(DnsServiceServer).Query(ctx, req.(*DnsPacket))
}
return interceptor(ctx, in, info, handler)
}
var _DnsService_serviceDesc = grpc.ServiceDesc{
ServiceName: "coredns.dns.DnsService",
HandlerType: (*DnsServiceServer)(nil),
Methods: []grpc.MethodDesc{
{
MethodName: "Query",
Handler: _DnsService_Query_Handler,
},
},
Streams: []grpc.StreamDesc{},
Metadata: "dns.proto",
}

12
vendor/github.com/coredns/coredns/pb/dns.proto generated vendored
View File

@ -1,12 +0,0 @@
syntax = "proto3";
package coredns.dns;
option go_package = "pb";
message DnsPacket {
bytes msg = 1;
}
service DnsService {
rpc Query (DnsPacket) returns (DnsPacket);
}

49
vendor/github.com/coredns/coredns/plugin/backend.go generated vendored
View File

@ -1,49 +0,0 @@
package plugin
import (
"context"
"github.com/coredns/coredns/plugin/etcd/msg"
"github.com/coredns/coredns/request"
"github.com/miekg/dns"
)
// ServiceBackend defines a (dynamic) backend that returns a slice of service definitions.
type ServiceBackend interface {
// Services communicates with the backend to retrieve the service definitions. Exact indicates
// on exact match should be returned.
Services(ctx context.Context, state request.Request, exact bool, opt Options) ([]msg.Service, error)
// Reverse communicates with the backend to retrieve service definition based on a IP address
// instead of a name. I.e. a reverse DNS lookup.
Reverse(ctx context.Context, state request.Request, exact bool, opt Options) ([]msg.Service, error)
// Lookup is used to find records else where.
Lookup(ctx context.Context, state request.Request, name string, typ uint16) (*dns.Msg, error)
// Returns _all_ services that matches a certain name.
// Note: it does not implement a specific service.
Records(ctx context.Context, state request.Request, exact bool) ([]msg.Service, error)
// IsNameError return true if err indicated a record not found condition
IsNameError(err error) bool
Transferer
}
// Transferer defines an interface for backends that provide AXFR of all records.
type Transferer interface {
// Serial returns a SOA serial number to construct a SOA record.
Serial(state request.Request) uint32
// MinTTL returns the minimum TTL to be used in the SOA record.
MinTTL(state request.Request) uint32
// Transfer handles a zone transfer it writes to the client just
// like any other handler.
Transfer(ctx context.Context, state request.Request) (int, error)
}
// Options are extra options that can be specified for a lookup.
type Options struct{}

549
vendor/github.com/coredns/coredns/plugin/backend_lookup.go generated vendored
View File

@ -1,549 +0,0 @@
package plugin
import (
"context"
"fmt"
"math"
"net"
"github.com/coredns/coredns/plugin/etcd/msg"
"github.com/coredns/coredns/plugin/pkg/dnsutil"
"github.com/coredns/coredns/request"
"github.com/miekg/dns"
)
// A returns A records from Backend or an error.
func A(ctx context.Context, b ServiceBackend, zone string, state request.Request, previousRecords []dns.RR, opt Options) (records []dns.RR, err error) {
services, err := checkForApex(ctx, b, zone, state, opt)
if err != nil {
return nil, err
}
dup := make(map[string]struct{})
for _, serv := range services {
what, ip := serv.HostType()
switch what {
case dns.TypeCNAME:
if Name(state.Name()).Matches(dns.Fqdn(serv.Host)) {
// x CNAME x is a direct loop, don't add those
continue
}
newRecord := serv.NewCNAME(state.QName(), serv.Host)
if len(previousRecords) > 7 {
// don't add it, and just continue
continue
}
if dnsutil.DuplicateCNAME(newRecord, previousRecords) {
continue
}
if dns.IsSubDomain(zone, dns.Fqdn(serv.Host)) {
state1 := state.NewWithQuestion(serv.Host, state.QType())
state1.Zone = zone
nextRecords, err := A(ctx, b, zone, state1, append(previousRecords, newRecord), opt)
if err == nil {
// Not only have we found something we should add the CNAME and the IP addresses.
if len(nextRecords) > 0 {
records = append(records, newRecord)
records = append(records, nextRecords...)
}
}
continue
}
// This means we can not complete the CNAME, try to look else where.
target := newRecord.Target
// Lookup
m1, e1 := b.Lookup(ctx, state, target, state.QType())
if e1 != nil {
continue
}
// Len(m1.Answer) > 0 here is well?
records = append(records, newRecord)
records = append(records, m1.Answer...)
continue
case dns.TypeA:
if _, ok := dup[serv.Host]; !ok {
dup[serv.Host] = struct{}{}
records = append(records, serv.NewA(state.QName(), ip))
}
case dns.TypeAAAA:
// nada
}
}
return records, nil
}
// AAAA returns AAAA records from Backend or an error.
func AAAA(ctx context.Context, b ServiceBackend, zone string, state request.Request, previousRecords []dns.RR, opt Options) (records []dns.RR, err error) {
services, err := checkForApex(ctx, b, zone, state, opt)
if err != nil {
return nil, err
}
dup := make(map[string]struct{})
for _, serv := range services {
what, ip := serv.HostType()
switch what {
case dns.TypeCNAME:
// Try to resolve as CNAME if it's not an IP, but only if we don't create loops.
if Name(state.Name()).Matches(dns.Fqdn(serv.Host)) {
// x CNAME x is a direct loop, don't add those
continue
}
newRecord := serv.NewCNAME(state.QName(), serv.Host)
if len(previousRecords) > 7 {
// don't add it, and just continue
continue
}
if dnsutil.DuplicateCNAME(newRecord, previousRecords) {
continue
}
if dns.IsSubDomain(zone, dns.Fqdn(serv.Host)) {
state1 := state.NewWithQuestion(serv.Host, state.QType())
state1.Zone = zone
nextRecords, err := AAAA(ctx, b, zone, state1, append(previousRecords, newRecord), opt)
if err == nil {
// Not only have we found something we should add the CNAME and the IP addresses.
if len(nextRecords) > 0 {
records = append(records, newRecord)
records = append(records, nextRecords...)
}
}
continue
}
// This means we can not complete the CNAME, try to look else where.
target := newRecord.Target
m1, e1 := b.Lookup(ctx, state, target, state.QType())
if e1 != nil {
continue
}
// Len(m1.Answer) > 0 here is well?
records = append(records, newRecord)
records = append(records, m1.Answer...)
continue
// both here again
case dns.TypeA:
// nada
case dns.TypeAAAA:
if _, ok := dup[serv.Host]; !ok {
dup[serv.Host] = struct{}{}
records = append(records, serv.NewAAAA(state.QName(), ip))
}
}
}
return records, nil
}
// SRV returns SRV records from the Backend.
// If the Target is not a name but an IP address, a name is created on the fly.
func SRV(ctx context.Context, b ServiceBackend, zone string, state request.Request, opt Options) (records, extra []dns.RR, err error) {
services, err := b.Services(ctx, state, false, opt)
if err != nil {
return nil, nil, err
}
dup := make(map[item]struct{})
lookup := make(map[string]struct{})
// Looping twice to get the right weight vs priority. This might break because we may drop duplicate SRV records latter on.
w := make(map[int]int)
for _, serv := range services {
weight := 100
if serv.Weight != 0 {
weight = serv.Weight
}
if _, ok := w[serv.Priority]; !ok {
w[serv.Priority] = weight
continue
}
w[serv.Priority] += weight
}
for _, serv := range services {
// Don't add the entry if the port is -1 (invalid). The kubernetes plugin uses port -1 when a service/endpoint
// does not have any declared ports.
if serv.Port == -1 {
continue
}
w1 := 100.0 / float64(w[serv.Priority])
if serv.Weight == 0 {
w1 *= 100
} else {
w1 *= float64(serv.Weight)
}
weight := uint16(math.Floor(w1))
what, ip := serv.HostType()
switch what {
case dns.TypeCNAME:
srv := serv.NewSRV(state.QName(), weight)
records = append(records, srv)
if _, ok := lookup[srv.Target]; ok {
break
}
lookup[srv.Target] = struct{}{}
if !dns.IsSubDomain(zone, srv.Target) {
m1, e1 := b.Lookup(ctx, state, srv.Target, dns.TypeA)
if e1 == nil {
extra = append(extra, m1.Answer...)
}
m1, e1 = b.Lookup(ctx, state, srv.Target, dns.TypeAAAA)
if e1 == nil {
// If we have seen CNAME's we *assume* that they are already added.
for _, a := range m1.Answer {
if _, ok := a.(*dns.CNAME); !ok {
extra = append(extra, a)
}
}
}
break
}
// Internal name, we should have some info on them, either v4 or v6
// Clients expect a complete answer, because we are a recursor in their view.
state1 := state.NewWithQuestion(srv.Target, dns.TypeA)
addr, e1 := A(ctx, b, zone, state1, nil, opt)
if e1 == nil {
extra = append(extra, addr...)
}
// TODO(miek): AAAA as well here.
case dns.TypeA, dns.TypeAAAA:
addr := serv.Host
serv.Host = msg.Domain(serv.Key)
srv := serv.NewSRV(state.QName(), weight)
if ok := isDuplicate(dup, srv.Target, "", srv.Port); !ok {
records = append(records, srv)
}
if ok := isDuplicate(dup, srv.Target, addr, 0); !ok {
extra = append(extra, newAddress(serv, srv.Target, ip, what))
}
}
}
return records, extra, nil
}
// MX returns MX records from the Backend. If the Target is not a name but an IP address, a name is created on the fly.
func MX(ctx context.Context, b ServiceBackend, zone string, state request.Request, opt Options) (records, extra []dns.RR, err error) {
services, err := b.Services(ctx, state, false, opt)
if err != nil {
return nil, nil, err
}
dup := make(map[item]struct{})
lookup := make(map[string]struct{})
for _, serv := range services {
if !serv.Mail {
continue
}
what, ip := serv.HostType()
switch what {
case dns.TypeCNAME:
mx := serv.NewMX(state.QName())
records = append(records, mx)
if _, ok := lookup[mx.Mx]; ok {
break
}
lookup[mx.Mx] = struct{}{}
if !dns.IsSubDomain(zone, mx.Mx) {
m1, e1 := b.Lookup(ctx, state, mx.Mx, dns.TypeA)
if e1 == nil {
extra = append(extra, m1.Answer...)
}
m1, e1 = b.Lookup(ctx, state, mx.Mx, dns.TypeAAAA)
if e1 == nil {
// If we have seen CNAME's we *assume* that they are already added.
for _, a := range m1.Answer {
if _, ok := a.(*dns.CNAME); !ok {
extra = append(extra, a)
}
}
}
break
}
// Internal name
state1 := state.NewWithQuestion(mx.Mx, dns.TypeA)
addr, e1 := A(ctx, b, zone, state1, nil, opt)
if e1 == nil {
extra = append(extra, addr...)
}
// TODO(miek): AAAA as well here.
case dns.TypeA, dns.TypeAAAA:
addr := serv.Host
serv.Host = msg.Domain(serv.Key)
mx := serv.NewMX(state.QName())
if ok := isDuplicate(dup, mx.Mx, "", mx.Preference); !ok {
records = append(records, mx)
}
// Fake port to be 0 for address...
if ok := isDuplicate(dup, serv.Host, addr, 0); !ok {
extra = append(extra, newAddress(serv, serv.Host, ip, what))
}
}
}
return records, extra, nil
}
// CNAME returns CNAME records from the backend or an error.
func CNAME(ctx context.Context, b ServiceBackend, zone string, state request.Request, opt Options) (records []dns.RR, err error) {
services, err := b.Services(ctx, state, true, opt)
if err != nil {
return nil, err
}
if len(services) > 0 {
serv := services[0]
if ip := net.ParseIP(serv.Host); ip == nil {
records = append(records, serv.NewCNAME(state.QName(), serv.Host))
}
}
return records, nil
}
// TXT returns TXT records from Backend or an error.
func TXT(ctx context.Context, b ServiceBackend, zone string, state request.Request, previousRecords []dns.RR, opt Options) (records []dns.RR, err error) {
services, err := b.Services(ctx, state, true, opt)
if err != nil {
return nil, err
}
dup := make(map[string]struct{})
for _, serv := range services {
what, _ := serv.HostType()
switch what {
case dns.TypeCNAME:
if Name(state.Name()).Matches(dns.Fqdn(serv.Host)) {
// x CNAME x is a direct loop, don't add those
continue
}
newRecord := serv.NewCNAME(state.QName(), serv.Host)
if len(previousRecords) > 7 {
// don't add it, and just continue
continue
}
if dnsutil.DuplicateCNAME(newRecord, previousRecords) {
continue
}
if dns.IsSubDomain(zone, dns.Fqdn(serv.Host)) {
state1 := state.NewWithQuestion(serv.Host, state.QType())
state1.Zone = zone
nextRecords, err := TXT(ctx, b, zone, state1, append(previousRecords, newRecord), opt)
if err == nil {
// Not only have we found something we should add the CNAME and the IP addresses.
if len(nextRecords) > 0 {
records = append(records, newRecord)
records = append(records, nextRecords...)
}
}
continue
}
// This means we can not complete the CNAME, try to look else where.
target := newRecord.Target
// Lookup
m1, e1 := b.Lookup(ctx, state, target, state.QType())
if e1 != nil {
continue
}
// Len(m1.Answer) > 0 here is well?
records = append(records, newRecord)
records = append(records, m1.Answer...)
continue
case dns.TypeTXT:
if _, ok := dup[serv.Host]; !ok {
dup[serv.Host] = struct{}{}
return append(records, serv.NewTXT(state.QName())), nil
}
}
}
return records, nil
}
// PTR returns the PTR records from the backend, only services that have a domain name as host are included.
func PTR(ctx context.Context, b ServiceBackend, zone string, state request.Request, opt Options) (records []dns.RR, err error) {
services, err := b.Reverse(ctx, state, true, opt)
if err != nil {
return nil, err
}
dup := make(map[string]struct{})
for _, serv := range services {
if ip := net.ParseIP(serv.Host); ip == nil {
if _, ok := dup[serv.Host]; !ok {
dup[serv.Host] = struct{}{}
records = append(records, serv.NewPTR(state.QName(), serv.Host))
}
}
}
return records, nil
}
// NS returns NS records from the backend
func NS(ctx context.Context, b ServiceBackend, zone string, state request.Request, opt Options) (records, extra []dns.RR, err error) {
// NS record for this zone live in a special place, ns.dns.<zone>. Fake our lookup.
// only a tad bit fishy...
old := state.QName()
state.Clear()
state.Req.Question[0].Name = "ns.dns." + zone
services, err := b.Services(ctx, state, false, opt)
if err != nil {
return nil, nil, err
}
// ... and reset
state.Req.Question[0].Name = old
seen := map[string]bool{}
for _, serv := range services {
what, ip := serv.HostType()
switch what {
case dns.TypeCNAME:
return nil, nil, fmt.Errorf("NS record must be an IP address: %s", serv.Host)
case dns.TypeA, dns.TypeAAAA:
serv.Host = msg.Domain(serv.Key)
extra = append(extra, newAddress(serv, serv.Host, ip, what))
ns := serv.NewNS(state.QName())
if _, ok := seen[ns.Ns]; ok {
continue
}
seen[ns.Ns] = true
records = append(records, ns)
}
}
return records, extra, nil
}
// SOA returns a SOA record from the backend.
func SOA(ctx context.Context, b ServiceBackend, zone string, state request.Request, opt Options) ([]dns.RR, error) {
minTTL := b.MinTTL(state)
ttl := uint32(300)
if minTTL < ttl {
ttl = minTTL
}
header := dns.RR_Header{Name: zone, Rrtype: dns.TypeSOA, Ttl: ttl, Class: dns.ClassINET}
Mbox := hostmaster + "."
Ns := "ns.dns."
if zone[0] != '.' {
Mbox += zone
Ns += zone
}
soa := &dns.SOA{Hdr: header,
Mbox: Mbox,
Ns: Ns,
Serial: b.Serial(state),
Refresh: 7200,
Retry: 1800,
Expire: 86400,
Minttl: minTTL,
}
return []dns.RR{soa}, nil
}
// BackendError writes an error response to the client.
func BackendError(ctx context.Context, b ServiceBackend, zone string, rcode int, state request.Request, err error, opt Options) (int, error) {
m := new(dns.Msg)
m.SetRcode(state.Req, rcode)
m.Authoritative = true
m.Ns, _ = SOA(ctx, b, zone, state, opt)
state.W.WriteMsg(m)
// Return success as the rcode to signal we have written to the client.
return dns.RcodeSuccess, err
}
func newAddress(s msg.Service, name string, ip net.IP, what uint16) dns.RR {
hdr := dns.RR_Header{Name: name, Rrtype: what, Class: dns.ClassINET, Ttl: s.TTL}
if what == dns.TypeA {
return &dns.A{Hdr: hdr, A: ip}
}
// Should always be dns.TypeAAAA
return &dns.AAAA{Hdr: hdr, AAAA: ip}
}
// checkForApex checks the special apex.dns directory for records that will be returned as A or AAAA.
func checkForApex(ctx context.Context, b ServiceBackend, zone string, state request.Request, opt Options) ([]msg.Service, error) {
if state.Name() != zone {
return b.Services(ctx, state, false, opt)
}
// If the zone name itself is queried we fake the query to search for a special entry
// this is equivalent to the NS search code.
old := state.QName()
state.Clear()
state.Req.Question[0].Name = dnsutil.Join("apex.dns", zone)
services, err := b.Services(ctx, state, false, opt)
if err == nil {
state.Req.Question[0].Name = old
return services, err
}
state.Req.Question[0].Name = old
return b.Services(ctx, state, false, opt)
}
// item holds records.
type item struct {
name string // name of the record (either owner or something else unique).
port uint16 // port of the record (used for address records, A and AAAA).
addr string // address of the record (A and AAAA).
}
// isDuplicate uses m to see if the combo (name, addr, port) already exists. If it does
// not exist already IsDuplicate will also add the record to the map.
func isDuplicate(m map[item]struct{}, name, addr string, port uint16) bool {
if addr != "" {
_, ok := m[item{name, 0, addr}]
if !ok {
m[item{name, 0, addr}] = struct{}{}
}
return ok
}
_, ok := m[item{name, port, ""}]
if !ok {
m[item{name, port, ""}] = struct{}{}
}
return ok
}
const hostmaster = "hostmaster"

13
vendor/github.com/coredns/coredns/plugin/done.go generated vendored
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@ -1,13 +0,0 @@
package plugin
import "context"
// Done is a non-blocking function that returns true if the context has been canceled.
func Done(ctx context.Context) bool {
select {
case <-ctx.Done():
return true
default:
return false
}
}

48
vendor/github.com/coredns/coredns/plugin/etcd/msg/path.go generated vendored
View File

@ -1,48 +0,0 @@
package msg
import (
"path"
"strings"
"github.com/coredns/coredns/plugin/pkg/dnsutil"
"github.com/miekg/dns"
)
// Path converts a domainname to an etcd path. If s looks like service.staging.skydns.local.,
// the resulting key will be /skydns/local/skydns/staging/service .
func Path(s, prefix string) string {
l := dns.SplitDomainName(s)
for i, j := 0, len(l)-1; i < j; i, j = i+1, j-1 {
l[i], l[j] = l[j], l[i]
}
return path.Join(append([]string{"/" + prefix + "/"}, l...)...)
}
// Domain is the opposite of Path.
func Domain(s string) string {
l := strings.Split(s, "/")
// start with 1, to strip /skydns
for i, j := 1, len(l)-1; i < j; i, j = i+1, j-1 {
l[i], l[j] = l[j], l[i]
}
return dnsutil.Join(l[1 : len(l)-1]...)
}
// PathWithWildcard acts as Path, but if a name contains wildcards (* or any), the name will be
// chopped of before the (first) wildcard, and we do a higher level search and
// later find the matching names. So service.*.skydns.local, will look for all
// services under skydns.local and will later check for names that match
// service.*.skydns.local. If a wildcard is found the returned bool is true.
func PathWithWildcard(s, prefix string) (string, bool) {
l := dns.SplitDomainName(s)
for i, j := 0, len(l)-1; i < j; i, j = i+1, j-1 {
l[i], l[j] = l[j], l[i]
}
for i, k := range l {
if k == "*" || k == "any" {
return path.Join(append([]string{"/" + prefix + "/"}, l[:i]...)...), true
}
}
return path.Join(append([]string{"/" + prefix + "/"}, l...)...), false
}

177
vendor/github.com/coredns/coredns/plugin/etcd/msg/service.go generated vendored
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@ -1,177 +0,0 @@
// Package msg defines the Service structure which is used for service discovery.
package msg
import (
"net"
"strings"
"github.com/miekg/dns"
)
// Service defines a discoverable service in etcd. It is the rdata from a SRV
// record, but with a twist. Host (Target in SRV) must be a domain name, but
// if it looks like an IP address (4/6), we will treat it like an IP address.
type Service struct {
Host string `json:"host,omitempty"`
Port int `json:"port,omitempty"`
Priority int `json:"priority,omitempty"`
Weight int `json:"weight,omitempty"`
Text string `json:"text,omitempty"`
Mail bool `json:"mail,omitempty"` // Be an MX record. Priority becomes Preference.
TTL uint32 `json:"ttl,omitempty"`
// When a SRV record with a "Host: IP-address" is added, we synthesize
// a srv.Target domain name. Normally we convert the full Key where
// the record lives to a DNS name and use this as the srv.Target. When
// TargetStrip > 0 we strip the left most TargetStrip labels from the
// DNS name.
TargetStrip int `json:"targetstrip,omitempty"`
// Group is used to group (or *not* to group) different services
// together. Services with an identical Group are returned in the same
// answer.
Group string `json:"group,omitempty"`
// Etcd key where we found this service and ignored from json un-/marshalling
Key string `json:"-"`
}
// NewSRV returns a new SRV record based on the Service.
func (s *Service) NewSRV(name string, weight uint16) *dns.SRV {
host := dns.Fqdn(s.Host)
if s.TargetStrip > 0 {
host = targetStrip(host, s.TargetStrip)
}
return &dns.SRV{Hdr: dns.RR_Header{Name: name, Rrtype: dns.TypeSRV, Class: dns.ClassINET, Ttl: s.TTL},
Priority: uint16(s.Priority), Weight: weight, Port: uint16(s.Port), Target: host}
}
// NewMX returns a new MX record based on the Service.
func (s *Service) NewMX(name string) *dns.MX {
host := dns.Fqdn(s.Host)
if s.TargetStrip > 0 {
host = targetStrip(host, s.TargetStrip)
}
return &dns.MX{Hdr: dns.RR_Header{Name: name, Rrtype: dns.TypeMX, Class: dns.ClassINET, Ttl: s.TTL},
Preference: uint16(s.Priority), Mx: host}
}
// NewA returns a new A record based on the Service.
func (s *Service) NewA(name string, ip net.IP) *dns.A {
return &dns.A{Hdr: dns.RR_Header{Name: name, Rrtype: dns.TypeA, Class: dns.ClassINET, Ttl: s.TTL}, A: ip}
}
// NewAAAA returns a new AAAA record based on the Service.
func (s *Service) NewAAAA(name string, ip net.IP) *dns.AAAA {
return &dns.AAAA{Hdr: dns.RR_Header{Name: name, Rrtype: dns.TypeAAAA, Class: dns.ClassINET, Ttl: s.TTL}, AAAA: ip}
}
// NewCNAME returns a new CNAME record based on the Service.
func (s *Service) NewCNAME(name string, target string) *dns.CNAME {
return &dns.CNAME{Hdr: dns.RR_Header{Name: name, Rrtype: dns.TypeCNAME, Class: dns.ClassINET, Ttl: s.TTL}, Target: dns.Fqdn(target)}
}
// NewTXT returns a new TXT record based on the Service.
func (s *Service) NewTXT(name string) *dns.TXT {
return &dns.TXT{Hdr: dns.RR_Header{Name: name, Rrtype: dns.TypeTXT, Class: dns.ClassINET, Ttl: s.TTL}, Txt: split255(s.Text)}
}
// NewPTR returns a new PTR record based on the Service.
func (s *Service) NewPTR(name string, target string) *dns.PTR {
return &dns.PTR{Hdr: dns.RR_Header{Name: name, Rrtype: dns.TypePTR, Class: dns.ClassINET, Ttl: s.TTL}, Ptr: dns.Fqdn(target)}
}
// NewNS returns a new NS record based on the Service.
func (s *Service) NewNS(name string) *dns.NS {
host := dns.Fqdn(s.Host)
if s.TargetStrip > 0 {
host = targetStrip(host, s.TargetStrip)
}
return &dns.NS{Hdr: dns.RR_Header{Name: name, Rrtype: dns.TypeNS, Class: dns.ClassINET, Ttl: s.TTL}, Ns: host}
}
// Group checks the services in sx, it looks for a Group attribute on the shortest
// keys. If there are multiple shortest keys *and* the group attribute disagrees (and
// is not empty), we don't consider it a group.
// If a group is found, only services with *that* group (or no group) will be returned.
func Group(sx []Service) []Service {
if len(sx) == 0 {
return sx
}
// Shortest key with group attribute sets the group for this set.
group := sx[0].Group
slashes := strings.Count(sx[0].Key, "/")
length := make([]int, len(sx))
for i, s := range sx {
x := strings.Count(s.Key, "/")
length[i] = x
if x < slashes {
if s.Group == "" {
break
}
slashes = x
group = s.Group
}
}
if group == "" {
return sx
}
ret := []Service{} // with slice-tricks in sx we can prolly save this allocation (TODO)
for i, s := range sx {
if s.Group == "" {
ret = append(ret, s)
continue
}
// Disagreement on the same level
if length[i] == slashes && s.Group != group {
return sx
}
if s.Group == group {
ret = append(ret, s)
}
}
return ret
}
// Split255 splits a string into 255 byte chunks.
func split255(s string) []string {
if len(s) < 255 {
return []string{s}
}
sx := []string{}
p, i := 0, 255
for {
if i <= len(s) {
sx = append(sx, s[p:i])
} else {
sx = append(sx, s[p:])
break
}
p, i = p+255, i+255
}
return sx
}
// targetStrip strips "targetstrip" labels from the left side of the fully qualified name.
func targetStrip(name string, targetStrip int) string {
offset, end := 0, false
for i := 0; i < targetStrip; i++ {
offset, end = dns.NextLabel(name, offset)
}
if end {
// We overshot the name, use the original one.
offset = 0
}
name = name[offset:]
return name
}

37
vendor/github.com/coredns/coredns/plugin/etcd/msg/type.go generated vendored
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@ -1,37 +0,0 @@
package msg
import (
"net"
"github.com/miekg/dns"
)
// HostType returns the DNS type of what is encoded in the Service Host field. We're reusing
// dns.TypeXXX to not reinvent a new set of identifiers.
//
// dns.TypeA: the service's Host field contains an A record.
// dns.TypeAAAA: the service's Host field contains an AAAA record.
// dns.TypeCNAME: the service's Host field contains a name.
//
// Note that a service can double/triple as a TXT record or MX record.
func (s *Service) HostType() (what uint16, normalized net.IP) {
ip := net.ParseIP(s.Host)
switch {
case ip == nil:
if len(s.Text) == 0 {
return dns.TypeCNAME, nil
}
return dns.TypeTXT, nil
case ip.To4() != nil:
return dns.TypeA, ip.To4()
case ip.To4() == nil:
return dns.TypeAAAA, ip.To16()
}
// This should never be reached.
return dns.TypeNone, nil
}

79
vendor/github.com/coredns/coredns/plugin/metrics/README.md generated vendored
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@ -1,79 +0,0 @@
# prometheus
## Name
*prometheus* - enables [Prometheus](https://prometheus.io/) metrics.
## Description
With *prometheus* you export metrics from CoreDNS and any plugin that has them.
The default location for the metrics is `localhost:9153`. The metrics path is fixed to `/metrics`.
The following metrics are exported:
* `coredns_build_info{version, revision, goversion}` - info about CoreDNS itself.
* `coredns_panic_count_total{}` - total number of panics.
* `coredns_dns_request_count_total{server, zone, proto, family}` - total query count.
* `coredns_dns_request_duration_seconds{server, zone, type}` - duration to process each query.
* `coredns_dns_request_size_bytes{server, zone, proto}` - size of the request in bytes.
* `coredns_dns_request_do_count_total{server, zone}` - queries that have the DO bit set
* `coredns_dns_request_type_count_total{server, zone, type}` - counter of queries per zone and type.
* `coredns_dns_response_size_bytes{server, zone, proto}` - response size in bytes.
* `coredns_dns_response_rcode_count_total{server, zone, rcode}` - response per zone and rcode.
* `coredns_plugin_enabled{server, zone, name}` - indicates whether a plugin is enabled on per server and zone basis.
Each counter has a label `zone` which is the zonename used for the request/response.
Extra labels used are:
* `server` is identifying the server responsible for the request. This is a string formatted
as the server's listening address: `<scheme>://[<bind>]:<port>`. I.e. for a "normal" DNS server
this is `dns://:53`. If you are using the *bind* plugin an IP address is included, e.g.: `dns://127.0.0.53:53`.
* `proto` which holds the transport of the response ("udp" or "tcp")
* The address family (`family`) of the transport (1 = IP (IP version 4), 2 = IP6 (IP version 6)).
* `type` which holds the query type. It holds most common types (A, AAAA, MX, SOA, CNAME, PTR, TXT,
NS, SRV, DS, DNSKEY, RRSIG, NSEC, NSEC3, IXFR, AXFR and ANY) and "other" which lumps together all
other types.
* The `response_rcode_count_total` has an extra label `rcode` which holds the rcode of the response.
If monitoring is enabled, queries that do not enter the plugin chain are exported under the fake
name "dropped" (without a closing dot - this is never a valid domain name).
This plugin can only be used once per Server Block.
## Syntax
~~~
prometheus [ADDRESS]
~~~
For each zone that you want to see metrics for.
It optionally takes a bind address to which the metrics are exported; the default
listens on `localhost:9153`. The metrics path is fixed to `/metrics`.
## Examples
Use an alternative listening address:
~~~ corefile
. {
prometheus localhost:9253
}
~~~
Or via an environment variable (this is supported throughout the Corefile): `export PORT=9253`, and
then:
~~~ corefile
. {
prometheus localhost:{$PORT}
}
~~~
## Bugs
When reloading, the Prometheus handler is stopped before the new server instance is started.
If that new server fails to start, then the initial server instance is still available and DNS queries still served,
but Prometheus handler stays down.
Prometheus will not reply HTTP request until a successful reload or a complete restart of CoreDNS.
Only the plugins that register as Handler are visible in `coredns_plugin_enabled{server, zone, name}`. As of today the plugins reload and bind will not be reported.

24
vendor/github.com/coredns/coredns/plugin/metrics/context.go generated vendored
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@ -1,24 +0,0 @@
package metrics
import (
"context"
"github.com/coredns/coredns/core/dnsserver"
)
// WithServer returns the current server handling the request. It returns the
// server listening address: <scheme>://[<bind>]:<port> Normally this is
// something like "dns://:53", but if the bind plugin is used, i.e. "bind
// 127.0.0.53", it will be "dns://127.0.0.53:53", etc. If not address is found
// the empty string is returned.
//
// Basic usage with a metric:
//
// <metric>.WithLabelValues(metrics.WithServer(ctx), labels..).Add(1)
func WithServer(ctx context.Context) string {
srv := ctx.Value(dnsserver.Key{})
if srv == nil {
return ""
}
return srv.(*dnsserver.Server).Addr
}

35
vendor/github.com/coredns/coredns/plugin/metrics/handler.go generated vendored
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@ -1,35 +0,0 @@
package metrics
import (
"context"
"github.com/coredns/coredns/plugin"
"github.com/coredns/coredns/plugin/metrics/vars"
"github.com/coredns/coredns/plugin/pkg/dnstest"
"github.com/coredns/coredns/plugin/pkg/rcode"
"github.com/coredns/coredns/request"
"github.com/miekg/dns"
)
// ServeDNS implements the Handler interface.
func (m *Metrics) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (int, error) {
state := request.Request{W: w, Req: r}
qname := state.QName()
zone := plugin.Zones(m.ZoneNames()).Matches(qname)
if zone == "" {
zone = "."
}
// Record response to get status code and size of the reply.
rw := dnstest.NewRecorder(w)
status, err := plugin.NextOrFailure(m.Name(), m.Next, ctx, rw, r)
vars.Report(WithServer(ctx), state, zone, rcode.ToString(rw.Rcode), rw.Len, rw.Start)
return status, err
}
// Name implements the Handler interface.
func (m *Metrics) Name() string { return "prometheus" }

170
vendor/github.com/coredns/coredns/plugin/metrics/metrics.go generated vendored
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@ -1,170 +0,0 @@
// Package metrics implement a handler and plugin that provides Prometheus metrics.
package metrics
import (
"context"
"net"
"net/http"
"sync"
"time"
"github.com/coredns/coredns/plugin"
"github.com/coredns/coredns/plugin/metrics/vars"
"github.com/coredns/coredns/plugin/pkg/reuseport"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promhttp"
)
// Metrics holds the prometheus configuration. The metrics' path is fixed to be /metrics .
type Metrics struct {
Next plugin.Handler
Addr string
Reg *prometheus.Registry
ln net.Listener
lnSetup bool
mux *http.ServeMux
srv *http.Server
zoneNames []string
zoneMap map[string]struct{}
zoneMu sync.RWMutex
}
// New returns a new instance of Metrics with the given address.
func New(addr string) *Metrics {
met := &Metrics{
Addr: addr,
Reg: prometheus.NewRegistry(),
zoneMap: make(map[string]struct{}),
}
// Add the default collectors
met.MustRegister(prometheus.NewGoCollector())
met.MustRegister(prometheus.NewProcessCollector(prometheus.ProcessCollectorOpts{}))
// Add all of our collectors
met.MustRegister(buildInfo)
met.MustRegister(vars.Panic)
met.MustRegister(vars.RequestCount)
met.MustRegister(vars.RequestDuration)
met.MustRegister(vars.RequestSize)
met.MustRegister(vars.RequestDo)
met.MustRegister(vars.RequestType)
met.MustRegister(vars.ResponseSize)
met.MustRegister(vars.ResponseRcode)
met.MustRegister(vars.PluginEnabled)
return met
}
// MustRegister wraps m.Reg.MustRegister.
func (m *Metrics) MustRegister(c prometheus.Collector) {
err := m.Reg.Register(c)
if err != nil {
// ignore any duplicate error, but fatal on any other kind of error
if _, ok := err.(prometheus.AlreadyRegisteredError); !ok {
log.Fatalf("Cannot register metrics collector: %s", err)
}
}
}
// AddZone adds zone z to m.
func (m *Metrics) AddZone(z string) {
m.zoneMu.Lock()
m.zoneMap[z] = struct{}{}
m.zoneNames = keys(m.zoneMap)
m.zoneMu.Unlock()
}
// RemoveZone remove zone z from m.
func (m *Metrics) RemoveZone(z string) {
m.zoneMu.Lock()
delete(m.zoneMap, z)
m.zoneNames = keys(m.zoneMap)
m.zoneMu.Unlock()
}
// ZoneNames returns the zones of m.
func (m *Metrics) ZoneNames() []string {
m.zoneMu.RLock()
s := m.zoneNames
m.zoneMu.RUnlock()
return s
}
// OnStartup sets up the metrics on startup.
func (m *Metrics) OnStartup() error {
ln, err := reuseport.Listen("tcp", m.Addr)
if err != nil {
log.Errorf("Failed to start metrics handler: %s", err)
return err
}
m.ln = ln
m.lnSetup = true
m.mux = http.NewServeMux()
m.mux.Handle("/metrics", promhttp.HandlerFor(m.Reg, promhttp.HandlerOpts{}))
// creating some helper variables to avoid data races on m.srv and m.ln
server := &http.Server{Handler: m.mux}
m.srv = server
go func() {
server.Serve(ln)
}()
ListenAddr = ln.Addr().String() // For tests.
return nil
}
// OnRestart stops the listener on reload.
func (m *Metrics) OnRestart() error {
if !m.lnSetup {
return nil
}
u.Unset(m.Addr)
return m.stopServer()
}
func (m *Metrics) stopServer() error {
if !m.lnSetup {
return nil
}
ctx, cancel := context.WithTimeout(context.Background(), shutdownTimeout)
defer cancel()
if err := m.srv.Shutdown(ctx); err != nil {
log.Infof("Failed to stop prometheus http server: %s", err)
return err
}
m.lnSetup = false
m.ln.Close()
return nil
}
// OnFinalShutdown tears down the metrics listener on shutdown and restart.
func (m *Metrics) OnFinalShutdown() error { return m.stopServer() }
func keys(m map[string]struct{}) []string {
sx := []string{}
for k := range m {
sx = append(sx, k)
}
return sx
}
// ListenAddr is assigned the address of the prometheus listener. Its use is mainly in tests where
// we listen on "localhost:0" and need to retrieve the actual address.
var ListenAddr string
// shutdownTimeout is the maximum amount of time the metrics plugin will wait
// before erroring when it tries to close the metrics server
const shutdownTimeout time.Duration = time.Second * 5
var buildInfo = prometheus.NewGaugeVec(prometheus.GaugeOpts{
Namespace: plugin.Namespace,
Name: "build_info",
Help: "A metric with a constant '1' value labeled by version, revision, and goversion from which CoreDNS was built.",
}, []string{"version", "revision", "goversion"})

23
vendor/github.com/coredns/coredns/plugin/metrics/register.go generated vendored
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@ -1,23 +0,0 @@
package metrics
import (
"github.com/coredns/coredns/core/dnsserver"
"github.com/caddyserver/caddy"
"github.com/prometheus/client_golang/prometheus"
)
// MustRegister registers the prometheus Collectors when the metrics plugin is used.
func MustRegister(c *caddy.Controller, cs ...prometheus.Collector) {
m := dnsserver.GetConfig(c).Handler("prometheus")
if m == nil {
return
}
x, ok := m.(*Metrics)
if !ok {
return
}
for _, c := range cs {
x.MustRegister(c)
}
}

28
vendor/github.com/coredns/coredns/plugin/metrics/registry.go generated vendored
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@ -1,28 +0,0 @@
package metrics
import (
"sync"
"github.com/prometheus/client_golang/prometheus"
)
type reg struct {
sync.RWMutex
r map[string]*prometheus.Registry
}
func newReg() *reg { return &reg{r: make(map[string]*prometheus.Registry)} }
// update sets the registry if not already there and returns the input. Or it returns
// a previous set value.
func (r *reg) getOrSet(addr string, pr *prometheus.Registry) *prometheus.Registry {
r.Lock()
defer r.Unlock()
if v, ok := r.r[addr]; ok {
return v
}
r.r[addr] = pr
return pr
}

105
vendor/github.com/coredns/coredns/plugin/metrics/setup.go generated vendored
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@ -1,105 +0,0 @@
package metrics
import (
"net"
"runtime"
"github.com/coredns/coredns/core/dnsserver"
"github.com/coredns/coredns/coremain"
"github.com/coredns/coredns/plugin"
"github.com/coredns/coredns/plugin/metrics/vars"
clog "github.com/coredns/coredns/plugin/pkg/log"
"github.com/coredns/coredns/plugin/pkg/uniq"
"github.com/caddyserver/caddy"
)
var (
log = clog.NewWithPlugin("prometheus")
u = uniq.New()
registry = newReg()
)
func init() { plugin.Register("prometheus", setup) }
func setup(c *caddy.Controller) error {
m, err := parse(c)
if err != nil {
return plugin.Error("prometheus", err)
}
m.Reg = registry.getOrSet(m.Addr, m.Reg)
c.OnStartup(func() error { m.Reg = registry.getOrSet(m.Addr, m.Reg); u.Set(m.Addr, m.OnStartup); return nil })
c.OnRestartFailed(func() error { m.Reg = registry.getOrSet(m.Addr, m.Reg); u.Set(m.Addr, m.OnStartup); return nil })
c.OnStartup(func() error { return u.ForEach() })
c.OnRestartFailed(func() error { return u.ForEach() })
c.OnStartup(func() error {
conf := dnsserver.GetConfig(c)
for _, h := range conf.ListenHosts {
addrstr := conf.Transport + "://" + net.JoinHostPort(h, conf.Port)
for _, p := range conf.Handlers() {
vars.PluginEnabled.WithLabelValues(addrstr, conf.Zone, p.Name()).Set(1)
}
}
return nil
})
c.OnRestartFailed(func() error {
conf := dnsserver.GetConfig(c)
for _, h := range conf.ListenHosts {
addrstr := conf.Transport + "://" + net.JoinHostPort(h, conf.Port)
for _, p := range conf.Handlers() {
vars.PluginEnabled.WithLabelValues(addrstr, conf.Zone, p.Name()).Set(1)
}
}
return nil
})
c.OnRestart(m.OnRestart)
c.OnRestart(func() error { vars.PluginEnabled.Reset(); return nil })
c.OnFinalShutdown(m.OnFinalShutdown)
// Initialize metrics.
buildInfo.WithLabelValues(coremain.CoreVersion, coremain.GitCommit, runtime.Version()).Set(1)
dnsserver.GetConfig(c).AddPlugin(func(next plugin.Handler) plugin.Handler {
m.Next = next
return m
})
return nil
}
func parse(c *caddy.Controller) (*Metrics, error) {
met := New(defaultAddr)
i := 0
for c.Next() {
if i > 0 {
return nil, plugin.ErrOnce
}
i++
for _, z := range c.ServerBlockKeys {
met.AddZone(plugin.Host(z).Normalize())
}
args := c.RemainingArgs()
switch len(args) {
case 0:
case 1:
met.Addr = args[0]
_, _, e := net.SplitHostPort(met.Addr)
if e != nil {
return met, e
}
default:
return met, c.ArgErr()
}
}
return met, nil
}
// defaultAddr is the address the where the metrics are exported by default.
const defaultAddr = "localhost:9153"

64
vendor/github.com/coredns/coredns/plugin/metrics/vars/report.go generated vendored
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@ -1,64 +0,0 @@
package vars
import (
"time"
"github.com/coredns/coredns/request"
"github.com/miekg/dns"
)
// Report reports the metrics data associated with request. This function is exported because it is also
// called from core/dnsserver to report requests hitting the server that should not be handled and are thus
// not sent down the plugin chain.
func Report(server string, req request.Request, zone, rcode string, size int, start time.Time) {
// Proto and Family.
net := req.Proto()
fam := "1"
if req.Family() == 2 {
fam = "2"
}
typ := req.QType()
RequestCount.WithLabelValues(server, zone, net, fam).Inc()
if req.Do() {
RequestDo.WithLabelValues(server, zone).Inc()
}
if _, known := monitorType[typ]; known {
RequestType.WithLabelValues(server, zone, dns.Type(typ).String()).Inc()
RequestDuration.WithLabelValues(server, zone, dns.Type(typ).String()).Observe(time.Since(start).Seconds())
} else {
RequestType.WithLabelValues(server, zone, other).Inc()
RequestDuration.WithLabelValues(server, zone, other).Observe(time.Since(start).Seconds())
}
ResponseSize.WithLabelValues(server, zone, net).Observe(float64(size))
RequestSize.WithLabelValues(server, zone, net).Observe(float64(req.Len()))
ResponseRcode.WithLabelValues(server, zone, rcode).Inc()
}
var monitorType = map[uint16]struct{}{
dns.TypeAAAA: {},
dns.TypeA: {},
dns.TypeCNAME: {},
dns.TypeDNSKEY: {},
dns.TypeDS: {},
dns.TypeMX: {},
dns.TypeNSEC3: {},
dns.TypeNSEC: {},
dns.TypeNS: {},
dns.TypePTR: {},
dns.TypeRRSIG: {},
dns.TypeSOA: {},
dns.TypeSRV: {},
dns.TypeTXT: {},
// Meta Qtypes
dns.TypeIXFR: {},
dns.TypeAXFR: {},
dns.TypeANY: {},
}
const other = "other"

81
vendor/github.com/coredns/coredns/plugin/metrics/vars/vars.go generated vendored
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@ -1,81 +0,0 @@
package vars
import (
"github.com/coredns/coredns/plugin"
"github.com/prometheus/client_golang/prometheus"
)
// Request* and Response* are the prometheus counters and gauges we are using for exporting metrics.
var (
RequestCount = prometheus.NewCounterVec(prometheus.CounterOpts{
Namespace: plugin.Namespace,
Subsystem: subsystem,
Name: "request_count_total",
Help: "Counter of DNS requests made per zone, protocol and family.",
}, []string{"server", "zone", "proto", "family"})
RequestDuration = prometheus.NewHistogramVec(prometheus.HistogramOpts{
Namespace: plugin.Namespace,
Subsystem: subsystem,
Name: "request_duration_seconds",
Buckets: plugin.TimeBuckets,
Help: "Histogram of the time (in seconds) each request took.",
}, []string{"server", "zone", "type"})
RequestSize = prometheus.NewHistogramVec(prometheus.HistogramOpts{
Namespace: plugin.Namespace,
Subsystem: subsystem,
Name: "request_size_bytes",
Help: "Size of the EDNS0 UDP buffer in bytes (64K for TCP).",
Buckets: []float64{0, 100, 200, 300, 400, 511, 1023, 2047, 4095, 8291, 16e3, 32e3, 48e3, 64e3},
}, []string{"server", "zone", "proto"})
RequestDo = prometheus.NewCounterVec(prometheus.CounterOpts{
Namespace: plugin.Namespace,
Subsystem: subsystem,
Name: "request_do_count_total",
Help: "Counter of DNS requests with DO bit set per zone.",
}, []string{"server", "zone"})
RequestType = prometheus.NewCounterVec(prometheus.CounterOpts{
Namespace: plugin.Namespace,
Subsystem: subsystem,
Name: "request_type_count_total",
Help: "Counter of DNS requests per type, per zone.",
}, []string{"server", "zone", "type"})
ResponseSize = prometheus.NewHistogramVec(prometheus.HistogramOpts{
Namespace: plugin.Namespace,
Subsystem: subsystem,
Name: "response_size_bytes",
Help: "Size of the returned response in bytes.",
Buckets: []float64{0, 100, 200, 300, 400, 511, 1023, 2047, 4095, 8291, 16e3, 32e3, 48e3, 64e3},
}, []string{"server", "zone", "proto"})
ResponseRcode = prometheus.NewCounterVec(prometheus.CounterOpts{
Namespace: plugin.Namespace,
Subsystem: subsystem,
Name: "response_rcode_count_total",
Help: "Counter of response status codes.",
}, []string{"server", "zone", "rcode"})
Panic = prometheus.NewCounter(prometheus.CounterOpts{
Namespace: plugin.Namespace,
Name: "panic_count_total",
Help: "A metrics that counts the number of panics.",
})
PluginEnabled = prometheus.NewGaugeVec(prometheus.GaugeOpts{
Namespace: plugin.Namespace,
Name: "plugin_enabled",
Help: "A metric that indicates whether a plugin is enabled on per server and zone basis.",
}, []string{"server", "zone", "name"})
)
const (
subsystem = "dns"
// Dropped indicates we dropped the query before any handling. It has no closing dot, so it can not be a valid zone.
Dropped = "dropped"
)

142
vendor/github.com/coredns/coredns/plugin/normalize.go generated vendored
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@ -1,142 +0,0 @@
package plugin
import (
"fmt"
"net"
"strconv"
"strings"
"github.com/coredns/coredns/plugin/pkg/parse"
"github.com/miekg/dns"
)
// See core/dnsserver/address.go - we should unify these two impls.
// Zones represents a lists of zone names.
type Zones []string
// Matches checks if qname is a subdomain of any of the zones in z. The match
// will return the most specific zones that matches. The empty string
// signals a not found condition.
func (z Zones) Matches(qname string) string {
zone := ""
for _, zname := range z {
if dns.IsSubDomain(zname, qname) {
// We want the *longest* matching zone, otherwise we may end up in a parent
if len(zname) > len(zone) {
zone = zname
}
}
}
return zone
}
// Normalize fully qualifies all zones in z. The zones in Z must be domain names, without
// a port or protocol prefix.
func (z Zones) Normalize() {
for i := range z {
z[i] = Name(z[i]).Normalize()
}
}
// Name represents a domain name.
type Name string
// Matches checks to see if other is a subdomain (or the same domain) of n.
// This method assures that names can be easily and consistently matched.
func (n Name) Matches(child string) bool {
if dns.Name(n) == dns.Name(child) {
return true
}
return dns.IsSubDomain(string(n), child)
}
// Normalize lowercases and makes n fully qualified.
func (n Name) Normalize() string { return strings.ToLower(dns.Fqdn(string(n))) }
type (
// Host represents a host from the Corefile, may contain port.
Host string
)
// Normalize will return the host portion of host, stripping
// of any port or transport. The host will also be fully qualified and lowercased.
// An empty string is returned on failure
func (h Host) Normalize() string {
// The error can be ignored here, because this function should only be called after the corefile has already been vetted.
host, _ := h.MustNormalize()
return host
}
// MustNormalize will return the host portion of host, stripping
// of any port or transport. The host will also be fully qualified and lowercased.
// An error is returned on error
func (h Host) MustNormalize() (string, error) {
s := string(h)
_, s = parse.Transport(s)
// The error can be ignored here, because this function is called after the corefile has already been vetted.
host, _, _, err := SplitHostPort(s)
if err != nil {
return "", err
}
return Name(host).Normalize(), nil
}
// SplitHostPort splits s up in a host and port portion, taking reverse address notation into account.
// String the string s should *not* be prefixed with any protocols, i.e. dns://. The returned ipnet is the
// *net.IPNet that is used when the zone is a reverse and a netmask is given.
func SplitHostPort(s string) (host, port string, ipnet *net.IPNet, err error) {
// If there is: :[0-9]+ on the end we assume this is the port. This works for (ascii) domain
// names and our reverse syntax, which always needs a /mask *before* the port.
// So from the back, find first colon, and then check if it's a number.
host = s
colon := strings.LastIndex(s, ":")
if colon == len(s)-1 {
return "", "", nil, fmt.Errorf("expecting data after last colon: %q", s)
}
if colon != -1 {
if p, err := strconv.Atoi(s[colon+1:]); err == nil {
port = strconv.Itoa(p)
host = s[:colon]
}
}
// TODO(miek): this should take escaping into account.
if len(host) > 255 {
return "", "", nil, fmt.Errorf("specified zone is too long: %d > 255", len(host))
}
_, d := dns.IsDomainName(host)
if !d {
return "", "", nil, fmt.Errorf("zone is not a valid domain name: %s", host)
}
// Check if it parses as a reverse zone, if so we use that. Must be fully specified IP and mask.
ip, n, err := net.ParseCIDR(host)
ones, bits := 0, 0
if err == nil {
if rev, e := dns.ReverseAddr(ip.String()); e == nil {
ones, bits = n.Mask.Size()
// get the size, in bits, of each portion of hostname defined in the reverse address. (8 for IPv4, 4 for IPv6)
sizeDigit := 8
if len(n.IP) == net.IPv6len {
sizeDigit = 4
}
// Get the first lower octet boundary to see what encompassing zone we should be authoritative for.
mod := (bits - ones) % sizeDigit
nearest := (bits - ones) + mod
offset := 0
var end bool
for i := 0; i < nearest/sizeDigit; i++ {
offset, end = dns.NextLabel(rev, offset)
if end {
break
}
}
host = rev[offset:]
}
}
return host, port, n, nil
}

41
vendor/github.com/coredns/coredns/plugin/pkg/dnstest/multirecorder.go generated vendored
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@ -1,41 +0,0 @@
package dnstest
import (
"time"
"github.com/miekg/dns"
)
// MultiRecorder is a type of ResponseWriter that captures all messages written to it.
type MultiRecorder struct {
Len int
Msgs []*dns.Msg
Start time.Time
dns.ResponseWriter
}
// NewMultiRecorder makes and returns a new MultiRecorder.
func NewMultiRecorder(w dns.ResponseWriter) *MultiRecorder {
return &MultiRecorder{
ResponseWriter: w,
Msgs: make([]*dns.Msg, 0),
Start: time.Now(),
}
}
// WriteMsg records the message and its length written to it and call the
// underlying ResponseWriter's WriteMsg method.
func (r *MultiRecorder) WriteMsg(res *dns.Msg) error {
r.Len += res.Len()
r.Msgs = append(r.Msgs, res)
return r.ResponseWriter.WriteMsg(res)
}
// Write is a wrapper that records the length of the messages that get written to it.
func (r *MultiRecorder) Write(buf []byte) (int, error) {
n, err := r.ResponseWriter.Write(buf)
if err == nil {
r.Len += n
}
return n, err
}

54
vendor/github.com/coredns/coredns/plugin/pkg/dnstest/recorder.go generated vendored
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@ -1,54 +0,0 @@
// Package dnstest allows for easy testing of DNS client against a test server.
package dnstest
import (
"time"
"github.com/miekg/dns"
)
// Recorder is a type of ResponseWriter that captures
// the rcode code written to it and also the size of the message
// written in the response. A rcode code does not have
// to be written, however, in which case 0 must be assumed.
// It is best to have the constructor initialize this type
// with that default status code.
type Recorder struct {
dns.ResponseWriter
Rcode int
Len int
Msg *dns.Msg
Start time.Time
}
// NewRecorder makes and returns a new Recorder,
// which captures the DNS rcode from the ResponseWriter
// and also the length of the response message written through it.
func NewRecorder(w dns.ResponseWriter) *Recorder {
return &Recorder{
ResponseWriter: w,
Rcode: 0,
Msg: nil,
Start: time.Now(),
}
}
// WriteMsg records the status code and calls the
// underlying ResponseWriter's WriteMsg method.
func (r *Recorder) WriteMsg(res *dns.Msg) error {
r.Rcode = res.Rcode
// We may get called multiple times (axfr for instance).
// Save the last message, but add the sizes.
r.Len += res.Len()
r.Msg = res
return r.ResponseWriter.WriteMsg(res)
}
// Write is a wrapper that records the length of the message that gets written.
func (r *Recorder) Write(buf []byte) (int, error) {
n, err := r.ResponseWriter.Write(buf)
if err == nil {
r.Len += n
}
return n, err
}

65
vendor/github.com/coredns/coredns/plugin/pkg/dnstest/server.go generated vendored
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@ -1,65 +0,0 @@
package dnstest
import (
"net"
"github.com/coredns/coredns/plugin/pkg/reuseport"
"github.com/miekg/dns"
)
// A Server is an DNS server listening on a system-chosen port on the local
// loopback interface, for use in end-to-end DNS tests.
type Server struct {
Addr string // Address where the server listening.
s1 *dns.Server // udp
s2 *dns.Server // tcp
}
// NewServer starts and returns a new Server. The caller should call Close when
// finished, to shut it down.
func NewServer(f dns.HandlerFunc) *Server {
dns.HandleFunc(".", f)
ch1 := make(chan bool)
ch2 := make(chan bool)
s1 := &dns.Server{} // udp
s2 := &dns.Server{} // tcp
for i := 0; i < 5; i++ { // 5 attempts
s2.Listener, _ = reuseport.Listen("tcp", ":0")
if s2.Listener == nil {
continue
}
s1.PacketConn, _ = net.ListenPacket("udp", s2.Listener.Addr().String())
if s1.PacketConn != nil {
break
}
// perhaps UPD port is in use, try again
s2.Listener.Close()
s2.Listener = nil
}
if s2.Listener == nil {
panic("dnstest.NewServer(): failed to create new server")
}
s1.NotifyStartedFunc = func() { close(ch1) }
s2.NotifyStartedFunc = func() { close(ch2) }
go s1.ActivateAndServe()
go s2.ActivateAndServe()
<-ch1
<-ch2
return &Server{s1: s1, s2: s2, Addr: s2.Listener.Addr().String()}
}
// Close shuts down the server.
func (s *Server) Close() {
s.s1.Shutdown()
s.s2.Shutdown()
}

15
vendor/github.com/coredns/coredns/plugin/pkg/dnsutil/cname.go generated vendored
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@ -1,15 +0,0 @@
package dnsutil
import "github.com/miekg/dns"
// DuplicateCNAME returns true if r already exists in records.
func DuplicateCNAME(r *dns.CNAME, records []dns.RR) bool {
for _, rec := range records {
if v, ok := rec.(*dns.CNAME); ok {
if v.Target == r.Target {
return true
}
}
}
return false
}

2
vendor/github.com/coredns/coredns/plugin/pkg/dnsutil/doc.go generated vendored
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@ -1,2 +0,0 @@
// Package dnsutil contains DNS related helper functions.
package dnsutil

17
vendor/github.com/coredns/coredns/plugin/pkg/dnsutil/join.go generated vendored
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@ -1,17 +0,0 @@
package dnsutil
import (
"strings"
"github.com/miekg/dns"
)
// Join joins labels to form a fully qualified domain name. If the last label is
// the root label it is ignored. Not other syntax checks are performed.
func Join(labels ...string) string {
ll := len(labels)
if labels[ll-1] == "." {
return strings.Join(labels[:ll-1], ".") + "."
}
return dns.Fqdn(strings.Join(labels, "."))
}

81
vendor/github.com/coredns/coredns/plugin/pkg/dnsutil/reverse.go generated vendored
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@ -1,81 +0,0 @@
package dnsutil
import (
"net"
"strings"
)
// ExtractAddressFromReverse turns a standard PTR reverse record name
// into an IP address. This works for ipv4 or ipv6.
//
// 54.119.58.176.in-addr.arpa. becomes 176.58.119.54. If the conversion
// fails the empty string is returned.
func ExtractAddressFromReverse(reverseName string) string {
search := ""
f := reverse
switch {
case strings.HasSuffix(reverseName, IP4arpa):
search = strings.TrimSuffix(reverseName, IP4arpa)
case strings.HasSuffix(reverseName, IP6arpa):
search = strings.TrimSuffix(reverseName, IP6arpa)
f = reverse6
default:
return ""
}
// Reverse the segments and then combine them.
return f(strings.Split(search, "."))
}
// IsReverse returns 0 is name is not in a reverse zone. Anything > 0 indicates
// name is in a reverse zone. The returned integer will be 1 for in-addr.arpa. (IPv4)
// and 2 for ip6.arpa. (IPv6).
func IsReverse(name string) int {
if strings.HasSuffix(name, IP4arpa) {
return 1
}
if strings.HasSuffix(name, IP6arpa) {
return 2
}
return 0
}
func reverse(slice []string) string {
for i := 0; i < len(slice)/2; i++ {
j := len(slice) - i - 1
slice[i], slice[j] = slice[j], slice[i]
}
ip := net.ParseIP(strings.Join(slice, ".")).To4()
if ip == nil {
return ""
}
return ip.String()
}
// reverse6 reverse the segments and combine them according to RFC3596:
// b.a.9.8.7.6.5.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.b.d.0.1.0.0.2
// is reversed to 2001:db8::567:89ab
func reverse6(slice []string) string {
for i := 0; i < len(slice)/2; i++ {
j := len(slice) - i - 1
slice[i], slice[j] = slice[j], slice[i]
}
slice6 := []string{}
for i := 0; i < len(slice)/4; i++ {
slice6 = append(slice6, strings.Join(slice[i*4:i*4+4], ""))
}
ip := net.ParseIP(strings.Join(slice6, ":")).To16()
if ip == nil {
return ""
}
return ip.String()
}
const (
// IP4arpa is the reverse tree suffix for v4 IP addresses.
IP4arpa = ".in-addr.arpa."
// IP6arpa is the reverse tree suffix for v6 IP addresses.
IP6arpa = ".ip6.arpa."
)

52
vendor/github.com/coredns/coredns/plugin/pkg/dnsutil/ttl.go generated vendored
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@ -1,52 +0,0 @@
package dnsutil
import (
"time"
"github.com/coredns/coredns/plugin/pkg/response"
"github.com/miekg/dns"
)
// MinimalTTL scans the message returns the lowest TTL found taking into the response.Type of the message.
func MinimalTTL(m *dns.Msg, mt response.Type) time.Duration {
if mt != response.NoError && mt != response.NameError && mt != response.NoData {
return MinimalDefaultTTL
}
// No records or OPT is the only record, return a short ttl as a fail safe.
if len(m.Answer)+len(m.Ns) == 0 &&
(len(m.Extra) == 0 || (len(m.Extra) == 1 && m.Extra[0].Header().Rrtype == dns.TypeOPT)) {
return MinimalDefaultTTL
}
minTTL := MaximumDefaulTTL
for _, r := range m.Answer {
if r.Header().Ttl < uint32(minTTL.Seconds()) {
minTTL = time.Duration(r.Header().Ttl) * time.Second
}
}
for _, r := range m.Ns {
if r.Header().Ttl < uint32(minTTL.Seconds()) {
minTTL = time.Duration(r.Header().Ttl) * time.Second
}
}
for _, r := range m.Extra {
if r.Header().Rrtype == dns.TypeOPT {
// OPT records use TTL field for extended rcode and flags
continue
}
if r.Header().Ttl < uint32(minTTL.Seconds()) {
minTTL = time.Duration(r.Header().Ttl) * time.Second
}
}
return minTTL
}
const (
// MinimalDefaultTTL is the absolute lowest TTL we use in CoreDNS.
MinimalDefaultTTL = 5 * time.Second
// MaximumDefaulTTL is the maximum TTL was use on RRsets in CoreDNS.
MaximumDefaulTTL = 1 * time.Hour
)

20
vendor/github.com/coredns/coredns/plugin/pkg/dnsutil/zone.go generated vendored
View File

@ -1,20 +0,0 @@
package dnsutil
import (
"errors"
"github.com/miekg/dns"
)
// TrimZone removes the zone component from q. It returns the trimmed
// name or an error is zone is longer then qname. The trimmed name will be returned
// without a trailing dot.
func TrimZone(q string, z string) (string, error) {
zl := dns.CountLabel(z)
i, ok := dns.PrevLabel(q, zl)
if ok || i-1 < 0 {
return "", errors.New("trimzone: overshot qname: " + q + "for zone " + z)
}
// This includes the '.', remove on return
return q[:i-1], nil
}

119
vendor/github.com/coredns/coredns/plugin/pkg/doh/doh.go generated vendored
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@ -1,119 +0,0 @@
package doh
import (
"bytes"
"encoding/base64"
"fmt"
"io"
"io/ioutil"
"net/http"
"github.com/miekg/dns"
)
// MimeType is the DoH mimetype that should be used.
const MimeType = "application/dns-message"
// Path is the URL path that should be used.
const Path = "/dns-query"
// NewRequest returns a new DoH request given a method, URL (without any paths, so exclude /dns-query) and dns.Msg.
func NewRequest(method, url string, m *dns.Msg) (*http.Request, error) {
buf, err := m.Pack()
if err != nil {
return nil, err
}
switch method {
case http.MethodGet:
b64 := base64.RawURLEncoding.EncodeToString(buf)
req, err := http.NewRequest(http.MethodGet, "https://"+url+Path+"?dns="+b64, nil)
if err != nil {
return req, err
}
req.Header.Set("content-type", MimeType)
req.Header.Set("accept", MimeType)
return req, nil
case http.MethodPost:
req, err := http.NewRequest(http.MethodPost, "https://"+url+Path+"?bla=foo:443", bytes.NewReader(buf))
if err != nil {
return req, err
}
req.Header.Set("content-type", MimeType)
req.Header.Set("accept", MimeType)
return req, nil
default:
return nil, fmt.Errorf("method not allowed: %s", method)
}
}
// ResponseToMsg converts a http.Response to a dns message.
func ResponseToMsg(resp *http.Response) (*dns.Msg, error) {
defer resp.Body.Close()
return toMsg(resp.Body)
}
// RequestToMsg converts a http.Request to a dns message.
func RequestToMsg(req *http.Request) (*dns.Msg, error) {
switch req.Method {
case http.MethodGet:
return requestToMsgGet(req)
case http.MethodPost:
return requestToMsgPost(req)
default:
return nil, fmt.Errorf("method not allowed: %s", req.Method)
}
}
// requestToMsgPost extracts the dns message from the request body.
func requestToMsgPost(req *http.Request) (*dns.Msg, error) {
defer req.Body.Close()
return toMsg(req.Body)
}
// requestToMsgGet extract the dns message from the GET request.
func requestToMsgGet(req *http.Request) (*dns.Msg, error) {
values := req.URL.Query()
b64, ok := values["dns"]
if !ok {
return nil, fmt.Errorf("no 'dns' query parameter found")
}
if len(b64) != 1 {
return nil, fmt.Errorf("multiple 'dns' query values found")
}
return base64ToMsg(b64[0])
}
func toMsg(r io.ReadCloser) (*dns.Msg, error) {
buf, err := ioutil.ReadAll(r)
if err != nil {
return nil, err
}
m := new(dns.Msg)
err = m.Unpack(buf)
return m, err
}
func base64ToMsg(b64 string) (*dns.Msg, error) {
buf, err := b64Enc.DecodeString(b64)
if err != nil {
return nil, err
}
m := new(dns.Msg)
err = m.Unpack(buf)
return m, err
}
var b64Enc = base64.RawURLEncoding

74
vendor/github.com/coredns/coredns/plugin/pkg/edns/edns.go generated vendored
View File

@ -1,74 +0,0 @@
// Package edns provides function useful for adding/inspecting OPT records to/in messages.
package edns
import (
"errors"
"sync"
"github.com/miekg/dns"
)
var sup = &supported{m: make(map[uint16]struct{})}
type supported struct {
m map[uint16]struct{}
sync.RWMutex
}
// SetSupportedOption adds a new supported option the set of EDNS0 options that we support. Plugins typically call
// this in their setup code to signal support for a new option.
// By default we support:
// dns.EDNS0NSID, dns.EDNS0EXPIRE, dns.EDNS0COOKIE, dns.EDNS0TCPKEEPALIVE, dns.EDNS0PADDING. These
// values are not in this map and checked directly in the server.
func SetSupportedOption(option uint16) {
sup.Lock()
sup.m[option] = struct{}{}
sup.Unlock()
}
// SupportedOption returns true if the option code is supported as an extra EDNS0 option.
func SupportedOption(option uint16) bool {
sup.RLock()
_, ok := sup.m[option]
sup.RUnlock()
return ok
}
// Version checks the EDNS version in the request. If error
// is nil everything is OK and we can invoke the plugin. If non-nil, the
// returned Msg is valid to be returned to the client (and should). For some
// reason this response should not contain a question RR in the question section.
func Version(req *dns.Msg) (*dns.Msg, error) {
opt := req.IsEdns0()
if opt == nil {
return nil, nil
}
if opt.Version() == 0 {
return nil, nil
}
m := new(dns.Msg)
m.SetReply(req)
// zero out question section, wtf.
m.Question = nil
o := new(dns.OPT)
o.Hdr.Name = "."
o.Hdr.Rrtype = dns.TypeOPT
o.SetVersion(0)
m.Rcode = dns.RcodeBadVers
o.SetExtendedRcode(dns.RcodeBadVers)
m.Extra = []dns.RR{o}
return m, errors.New("EDNS0 BADVERS")
}
// Size returns a normalized size based on proto.
func Size(proto string, size uint16) uint16 {
if proto == "tcp" {
return dns.MaxMsgSize
}
if size < dns.MinMsgSize {
return dns.MinMsgSize
}
return size
}

113
vendor/github.com/coredns/coredns/plugin/pkg/log/log.go generated vendored
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@ -1,113 +0,0 @@
// Package log implements a small wrapper around the std lib log package. It
// implements log levels by prefixing the logs with [INFO], [DEBUG], [WARNING]
// or [ERROR]. Debug logging is available and enabled if the *debug* plugin is
// used.
//
// log.Info("this is some logging"), will log on the Info level.
//
// log.Debug("this is debug output"), will log in the Debug level, etc.
package log
import (
"fmt"
"io/ioutil"
golog "log"
"os"
"sync"
)
// D controls whether we should output debug logs. If true, we do, once set
// it can not be unset.
var D = &d{}
type d struct {
on bool
sync.RWMutex
}
// Set enables debug logging.
func (d *d) Set() {
d.Lock()
d.on = true
d.Unlock()
}
// Clear disables debug logging.
func (d *d) Clear() {
d.Lock()
d.on = false
d.Unlock()
}
// Value returns if debug logging is enabled.
func (d *d) Value() bool {
d.RLock()
b := d.on
d.RUnlock()
return b
}
// logf calls log.Printf prefixed with level.
func logf(level, format string, v ...interface{}) {
golog.Print(level, fmt.Sprintf(format, v...))
}
// log calls log.Print prefixed with level.
func log(level string, v ...interface{}) {
golog.Print(level, fmt.Sprint(v...))
}
// Debug is equivalent to log.Print(), but prefixed with "[DEBUG] ". It only outputs something
// if D is true.
func Debug(v ...interface{}) {
if !D.Value() {
return
}
log(debug, v...)
}
// Debugf is equivalent to log.Printf(), but prefixed with "[DEBUG] ". It only outputs something
// if D is true.
func Debugf(format string, v ...interface{}) {
if !D.Value() {
return
}
logf(debug, format, v...)
}
// Info is equivalent to log.Print, but prefixed with "[INFO] ".
func Info(v ...interface{}) { log(info, v...) }
// Infof is equivalent to log.Printf, but prefixed with "[INFO] ".
func Infof(format string, v ...interface{}) { logf(info, format, v...) }
// Warning is equivalent to log.Print, but prefixed with "[WARNING] ".
func Warning(v ...interface{}) { log(warning, v...) }
// Warningf is equivalent to log.Printf, but prefixed with "[WARNING] ".
func Warningf(format string, v ...interface{}) { logf(warning, format, v...) }
// Error is equivalent to log.Print, but prefixed with "[ERROR] ".
func Error(v ...interface{}) { log(err, v...) }
// Errorf is equivalent to log.Printf, but prefixed with "[ERROR] ".
func Errorf(format string, v ...interface{}) { logf(err, format, v...) }
// Fatal is equivalent to log.Print, but prefixed with "[FATAL] ", and calling
// os.Exit(1).
func Fatal(v ...interface{}) { log(fatal, v...); os.Exit(1) }
// Fatalf is equivalent to log.Printf, but prefixed with "[FATAL] ", and calling
// os.Exit(1)
func Fatalf(format string, v ...interface{}) { logf(fatal, format, v...); os.Exit(1) }
// Discard sets the log output to /dev/null.
func Discard() { golog.SetOutput(ioutil.Discard) }
const (
debug = "[DEBUG] "
err = "[ERROR] "
fatal = "[FATAL] "
info = "[INFO] "
warning = "[WARNING] "
)

63
vendor/github.com/coredns/coredns/plugin/pkg/log/plugin.go generated vendored
View File

@ -1,63 +0,0 @@
package log
import (
"fmt"
"os"
)
// P is a logger that includes the plugin doing the logging.
type P struct {
plugin string
}
// NewWithPlugin returns a logger that includes "plugin/name: " in the log message.
// I.e [INFO] plugin/<name>: message.
func NewWithPlugin(name string) P { return P{"plugin/" + name + ": "} }
func (p P) logf(level, format string, v ...interface{}) {
log(level, p.plugin, fmt.Sprintf(format, v...))
}
func (p P) log(level string, v ...interface{}) {
log(level+p.plugin, v...)
}
// Debug logs as log.Debug.
func (p P) Debug(v ...interface{}) {
if !D.Value() {
return
}
p.log(debug, v...)
}
// Debugf logs as log.Debugf.
func (p P) Debugf(format string, v ...interface{}) {
if !D.Value() {
return
}
p.logf(debug, format, v...)
}
// Info logs as log.Info.
func (p P) Info(v ...interface{}) { p.log(info, v...) }
// Infof logs as log.Infof.
func (p P) Infof(format string, v ...interface{}) { p.logf(info, format, v...) }
// Warning logs as log.Warning.
func (p P) Warning(v ...interface{}) { p.log(warning, v...) }
// Warningf logs as log.Warningf.
func (p P) Warningf(format string, v ...interface{}) { p.logf(warning, format, v...) }
// Error logs as log.Error.
func (p P) Error(v ...interface{}) { p.log(err, v...) }
// Errorf logs as log.Errorf.
func (p P) Errorf(format string, v ...interface{}) { p.logf(err, format, v...) }
// Fatal logs as log.Fatal and calls os.Exit(1).
func (p P) Fatal(v ...interface{}) { p.log(fatal, v...); os.Exit(1) }
// Fatalf logs as log.Fatalf and calls os.Exit(1).
func (p P) Fatalf(format string, v ...interface{}) { p.logf(fatal, format, v...); os.Exit(1) }

21
vendor/github.com/coredns/coredns/plugin/pkg/nonwriter/nonwriter.go generated vendored
View File

@ -1,21 +0,0 @@
// Package nonwriter implements a dns.ResponseWriter that never writes, but captures the dns.Msg being written.
package nonwriter
import (
"github.com/miekg/dns"
)
// Writer is a type of ResponseWriter that captures the message, but never writes to the client.
type Writer struct {
dns.ResponseWriter
Msg *dns.Msg
}
// New makes and returns a new NonWriter.
func New(w dns.ResponseWriter) *Writer { return &Writer{ResponseWriter: w} }
// WriteMsg records the message, but doesn't write it itself.
func (w *Writer) WriteMsg(res *dns.Msg) error {
w.Msg = res
return nil
}

112
vendor/github.com/coredns/coredns/plugin/pkg/parse/host.go generated vendored
View File

@ -1,112 +0,0 @@
package parse
import (
"fmt"
"net"
"os"
"strings"
"github.com/coredns/coredns/plugin/pkg/transport"
"github.com/miekg/dns"
)
// Strips the zone, but preserves any port that comes after the zone
func stripZone(host string) string {
if strings.Contains(host, "%") {
lastPercent := strings.LastIndex(host, "%")
newHost := host[:lastPercent]
return newHost
}
return host
}
// HostPortOrFile parses the strings in s, each string can either be a
// address, [scheme://]address:port or a filename. The address part is checked
// and in case of filename a resolv.conf like file is (assumed) and parsed and
// the nameservers found are returned.
func HostPortOrFile(s ...string) ([]string, error) {
var servers []string
for _, h := range s {
trans, host := Transport(h)
addr, _, err := net.SplitHostPort(host)
if err != nil {
// Parse didn't work, it is not a addr:port combo
hostNoZone := stripZone(host)
if net.ParseIP(hostNoZone) == nil {
ss, err := tryFile(host)
if err == nil {
servers = append(servers, ss...)
continue
}
return servers, fmt.Errorf("not an IP address or file: %q", host)
}
var ss string
switch trans {
case transport.DNS:
ss = net.JoinHostPort(host, transport.Port)
case transport.TLS:
ss = transport.TLS + "://" + net.JoinHostPort(host, transport.TLSPort)
case transport.GRPC:
ss = transport.GRPC + "://" + net.JoinHostPort(host, transport.GRPCPort)
case transport.HTTPS:
ss = transport.HTTPS + "://" + net.JoinHostPort(host, transport.HTTPSPort)
}
servers = append(servers, ss)
continue
}
if net.ParseIP(stripZone(addr)) == nil {
ss, err := tryFile(host)
if err == nil {
servers = append(servers, ss...)
continue
}
return servers, fmt.Errorf("not an IP address or file: %q", host)
}
servers = append(servers, h)
}
if len(servers) == 0 {
return servers, fmt.Errorf("no nameservers found")
}
return servers, nil
}
// Try to open this is a file first.
func tryFile(s string) ([]string, error) {
c, err := dns.ClientConfigFromFile(s)
if err == os.ErrNotExist {
return nil, fmt.Errorf("failed to open file %q: %q", s, err)
} else if err != nil {
return nil, err
}
servers := []string{}
for _, s := range c.Servers {
servers = append(servers, net.JoinHostPort(s, c.Port))
}
return servers, nil
}
// HostPort will check if the host part is a valid IP address, if the
// IP address is valid, but no port is found, defaultPort is added.
func HostPort(s, defaultPort string) (string, error) {
addr, port, err := net.SplitHostPort(s)
if port == "" {
port = defaultPort
}
if err != nil {
if net.ParseIP(s) == nil {
return "", fmt.Errorf("must specify an IP address: `%s'", s)
}
return net.JoinHostPort(s, port), nil
}
if net.ParseIP(addr) == nil {
return "", fmt.Errorf("must specify an IP address: `%s'", addr)
}
return net.JoinHostPort(addr, port), nil
}

49
vendor/github.com/coredns/coredns/plugin/pkg/parse/parse.go generated vendored
View File

@ -1,49 +0,0 @@
// Package parse contains functions that can be used in the setup code for plugins.
package parse
import (
"fmt"
"github.com/coredns/coredns/plugin/pkg/transport"
"github.com/caddyserver/caddy"
)
// Transfer parses transfer statements: 'transfer [to|from] [address...]'.
func Transfer(c *caddy.Controller, secondary bool) (tos, froms []string, err error) {
if !c.NextArg() {
return nil, nil, c.ArgErr()
}
value := c.Val()
switch value {
case "to":
tos = c.RemainingArgs()
for i := range tos {
if tos[i] != "*" {
normalized, err := HostPort(tos[i], transport.Port)
if err != nil {
return nil, nil, err
}
tos[i] = normalized
}
}
case "from":
if !secondary {
return nil, nil, fmt.Errorf("can't use `transfer from` when not being a secondary")
}
froms = c.RemainingArgs()
for i := range froms {
if froms[i] != "*" {
normalized, err := HostPort(froms[i], transport.Port)
if err != nil {
return nil, nil, err
}
froms[i] = normalized
} else {
return nil, nil, fmt.Errorf("can't use '*' in transfer from")
}
}
}
return
}

33
vendor/github.com/coredns/coredns/plugin/pkg/parse/transport.go generated vendored
View File

@ -1,33 +0,0 @@
package parse
import (
"strings"
"github.com/coredns/coredns/plugin/pkg/transport"
)
// Transport returns the transport defined in s and a string where the
// transport prefix is removed (if there was any). If no transport is defined
// we default to TransportDNS
func Transport(s string) (trans string, addr string) {
switch {
case strings.HasPrefix(s, transport.TLS+"://"):
s = s[len(transport.TLS+"://"):]
return transport.TLS, s
case strings.HasPrefix(s, transport.DNS+"://"):
s = s[len(transport.DNS+"://"):]
return transport.DNS, s
case strings.HasPrefix(s, transport.GRPC+"://"):
s = s[len(transport.GRPC+"://"):]
return transport.GRPC, s
case strings.HasPrefix(s, transport.HTTPS+"://"):
s = s[len(transport.HTTPS+"://"):]
return transport.HTTPS, s
}
return transport.DNS, s
}

15
vendor/github.com/coredns/coredns/plugin/pkg/rcode/rcode.go generated vendored
View File

@ -1,15 +0,0 @@
package rcode
import (
"strconv"
"github.com/miekg/dns"
)
// ToString convert the rcode to the official DNS string, or to "RCODE"+value if the RCODE value is unknown.
func ToString(rcode int) string {
if str, ok := dns.RcodeToString[rcode]; ok {
return str
}
return "RCODE" + strconv.Itoa(rcode)
}

61
vendor/github.com/coredns/coredns/plugin/pkg/response/classify.go generated vendored
View File

@ -1,61 +0,0 @@
package response
import "fmt"
// Class holds sets of Types
type Class int
const (
// All is a meta class encompassing all the classes.
All Class = iota
// Success is a class for a successful response.
Success
// Denial is a class for denying existence (NXDOMAIN, or a nodata: type does not exist)
Denial
// Error is a class for errors, right now defined as not Success and not Denial
Error
)
func (c Class) String() string {
switch c {
case All:
return "all"
case Success:
return "success"
case Denial:
return "denial"
case Error:
return "error"
}
return ""
}
// ClassFromString returns the class from the string s. If not class matches
// the All class and an error are returned
func ClassFromString(s string) (Class, error) {
switch s {
case "all":
return All, nil
case "success":
return Success, nil
case "denial":
return Denial, nil
case "error":
return Error, nil
}
return All, fmt.Errorf("invalid Class: %s", s)
}
// Classify classifies the Type t, it returns its Class.
func Classify(t Type) Class {
switch t {
case NoError, Delegation:
return Success
case NameError, NoData:
return Denial
case OtherError:
fallthrough
default:
return Error
}
}

151
vendor/github.com/coredns/coredns/plugin/pkg/response/typify.go generated vendored
View File

@ -1,151 +0,0 @@
package response
import (
"fmt"
"time"
"github.com/miekg/dns"
)
// Type is the type of the message.
type Type int
const (
// NoError indicates a positive reply
NoError Type = iota
// NameError is a NXDOMAIN in header, SOA in auth.
NameError
// ServerError is a set of errors we want to cache, for now it contains SERVFAIL and NOTIMPL.
ServerError
// NoData indicates name found, but not the type: NOERROR in header, SOA in auth.
NoData
// Delegation is a msg with a pointer to another nameserver: NOERROR in header, NS in auth, optionally fluff in additional (not checked).
Delegation
// Meta indicates a meta message, NOTIFY, or a transfer: qType is IXFR or AXFR.
Meta
// Update is an dynamic update message.
Update
// OtherError indicates any other error: don't cache these.
OtherError
)
var toString = map[Type]string{
NoError: "NOERROR",
NameError: "NXDOMAIN",
ServerError: "SERVERERROR",
NoData: "NODATA",
Delegation: "DELEGATION",
Meta: "META",
Update: "UPDATE",
OtherError: "OTHERERROR",
}
func (t Type) String() string { return toString[t] }
// TypeFromString returns the type from the string s. If not type matches
// the OtherError type and an error are returned.
func TypeFromString(s string) (Type, error) {
for t, str := range toString {
if s == str {
return t, nil
}
}
return NoError, fmt.Errorf("invalid Type: %s", s)
}
// Typify classifies a message, it returns the Type.
func Typify(m *dns.Msg, t time.Time) (Type, *dns.OPT) {
if m == nil {
return OtherError, nil
}
opt := m.IsEdns0()
do := false
if opt != nil {
do = opt.Do()
}
if m.Opcode == dns.OpcodeUpdate {
return Update, opt
}
// Check transfer and update first
if m.Opcode == dns.OpcodeNotify {
return Meta, opt
}
if len(m.Question) > 0 {
if m.Question[0].Qtype == dns.TypeAXFR || m.Question[0].Qtype == dns.TypeIXFR {
return Meta, opt
}
}
// If our message contains any expired sigs and we care about that, we should return expired
if do {
if expired := typifyExpired(m, t); expired {
return OtherError, opt
}
}
if len(m.Answer) > 0 && m.Rcode == dns.RcodeSuccess {
return NoError, opt
}
soa := false
ns := 0
for _, r := range m.Ns {
if r.Header().Rrtype == dns.TypeSOA {
soa = true
continue
}
if r.Header().Rrtype == dns.TypeNS {
ns++
}
}
if soa && m.Rcode == dns.RcodeSuccess {
return NoData, opt
}
if soa && m.Rcode == dns.RcodeNameError {
return NameError, opt
}
if m.Rcode == dns.RcodeServerFailure || m.Rcode == dns.RcodeNotImplemented {
return ServerError, opt
}
if ns > 0 && m.Rcode == dns.RcodeSuccess {
return Delegation, opt
}
if m.Rcode == dns.RcodeSuccess {
return NoError, opt
}
return OtherError, opt
}
func typifyExpired(m *dns.Msg, t time.Time) bool {
if expired := typifyExpiredRRSIG(m.Answer, t); expired {
return true
}
if expired := typifyExpiredRRSIG(m.Ns, t); expired {
return true
}
if expired := typifyExpiredRRSIG(m.Extra, t); expired {
return true
}
return false
}
func typifyExpiredRRSIG(rrs []dns.RR, t time.Time) bool {
for _, r := range rrs {
if r.Header().Rrtype != dns.TypeRRSIG {
continue
}
ok := r.(*dns.RRSIG).ValidityPeriod(t)
if !ok {
return true
}
}
return false
}

37
vendor/github.com/coredns/coredns/plugin/pkg/reuseport/listen_go111.go generated vendored
View File

@ -1,37 +0,0 @@
// +build go1.11
// +build aix darwin dragonfly freebsd linux netbsd openbsd
package reuseport
import (
"context"
"net"
"syscall"
"github.com/coredns/coredns/plugin/pkg/log"
"golang.org/x/sys/unix"
)
func control(network, address string, c syscall.RawConn) error {
c.Control(func(fd uintptr) {
if err := unix.SetsockoptInt(int(fd), unix.SOL_SOCKET, unix.SO_REUSEPORT, 1); err != nil {
log.Warningf("Failed to set SO_REUSEPORT on socket: %s", err)
}
})
return nil
}
// Listen announces on the local network address. See net.Listen for more information.
// If SO_REUSEPORT is available it will be set on the socket.
func Listen(network, addr string) (net.Listener, error) {
lc := net.ListenConfig{Control: control}
return lc.Listen(context.Background(), network, addr)
}
// ListenPacket announces on the local network address. See net.ListenPacket for more information.
// If SO_REUSEPORT is available it will be set on the socket.
func ListenPacket(network, addr string) (net.PacketConn, error) {
lc := net.ListenConfig{Control: control}
return lc.ListenPacket(context.Background(), network, addr)
}

13
vendor/github.com/coredns/coredns/plugin/pkg/reuseport/listen_go_not111.go generated vendored
View File

@ -1,13 +0,0 @@
// +build !go1.11 !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd
package reuseport
import "net"
// Listen is a wrapper around net.Listen.
func Listen(network, addr string) (net.Listener, error) { return net.Listen(network, addr) }
// ListenPacket is a wrapper around net.ListenPacket.
func ListenPacket(network, addr string) (net.PacketConn, error) {
return net.ListenPacket(network, addr)
}

12
vendor/github.com/coredns/coredns/plugin/pkg/trace/trace.go generated vendored
View File

@ -1,12 +0,0 @@
package trace
import (
"github.com/coredns/coredns/plugin"
ot "github.com/opentracing/opentracing-go"
)
// Trace holds the tracer and endpoint info
type Trace interface {
plugin.Handler
Tracer() ot.Tracer
}

21
vendor/github.com/coredns/coredns/plugin/pkg/transport/transport.go generated vendored
View File

@ -1,21 +0,0 @@
package transport
// These transports are supported by CoreDNS.
const (
DNS = "dns"
TLS = "tls"
GRPC = "grpc"
HTTPS = "https"
)
// Port numbers for the various transports.
const (
// Port is the default port for DNS
Port = "53"
// TLSPort is the default port for DNS-over-TLS.
TLSPort = "853"
// GRPCPort is the default port for DNS-over-gRPC.
GRPCPort = "443"
// HTTPSPort is the default port for DNS-over-HTTPS.
HTTPSPort = "443"
)

46
vendor/github.com/coredns/coredns/plugin/pkg/uniq/uniq.go generated vendored
View File

@ -1,46 +0,0 @@
// Package uniq keeps track of "thing" that are either "todo" or "done". Multiple
// identical events will only be processed once.
package uniq
// U keeps track of item to be done.
type U struct {
u map[string]item
}
type item struct {
state int // either todo or done
f func() error // function to be executed.
}
// New returns a new initialized U.
func New() U { return U{u: make(map[string]item)} }
// Set sets function f in U under key. If the key already exists it is not overwritten.
func (u U) Set(key string, f func() error) {
if _, ok := u.u[key]; ok {
return
}
u.u[key] = item{todo, f}
}
// Unset removes the key.
func (u U) Unset(key string) {
delete(u.u, key)
}
// ForEach iterates over u and executes f for each element that is 'todo' and sets it to 'done'.
func (u U) ForEach() error {
for k, v := range u.u {
if v.state == todo {
v.f()
}
v.state = done
u.u[k] = v
}
return nil
}
const (
todo = 1
done = 2
)

109
vendor/github.com/coredns/coredns/plugin/plugin.go generated vendored
View File

@ -1,109 +0,0 @@
// Package plugin provides some types and functions common among plugin.
package plugin
import (
"context"
"errors"
"fmt"
"github.com/miekg/dns"
ot "github.com/opentracing/opentracing-go"
"github.com/prometheus/client_golang/prometheus"
)
type (
// Plugin is a middle layer which represents the traditional
// idea of plugin: it chains one Handler to the next by being
// passed the next Handler in the chain.
Plugin func(Handler) Handler
// Handler is like dns.Handler except ServeDNS may return an rcode
// and/or error.
//
// If ServeDNS writes to the response body, it should return a status
// code. CoreDNS assumes *no* reply has yet been written if the status
// code is one of the following:
//
// * SERVFAIL (dns.RcodeServerFailure)
//
// * REFUSED (dns.RecodeRefused)
//
// * FORMERR (dns.RcodeFormatError)
//
// * NOTIMP (dns.RcodeNotImplemented)
//
// All other response codes signal other handlers above it that the
// response message is already written, and that they should not write
// to it also.
//
// If ServeDNS encounters an error, it should return the error value
// so it can be logged by designated error-handling plugin.
//
// If writing a response after calling another ServeDNS method, the
// returned rcode SHOULD be used when writing the response.
//
// If handling errors after calling another ServeDNS method, the
// returned error value SHOULD be logged or handled accordingly.
//
// Otherwise, return values should be propagated down the plugin
// chain by returning them unchanged.
Handler interface {
ServeDNS(context.Context, dns.ResponseWriter, *dns.Msg) (int, error)
Name() string
}
// HandlerFunc is a convenience type like dns.HandlerFunc, except
// ServeDNS returns an rcode and an error. See Handler
// documentation for more information.
HandlerFunc func(context.Context, dns.ResponseWriter, *dns.Msg) (int, error)
)
// ServeDNS implements the Handler interface.
func (f HandlerFunc) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (int, error) {
return f(ctx, w, r)
}
// Name implements the Handler interface.
func (f HandlerFunc) Name() string { return "handlerfunc" }
// Error returns err with 'plugin/name: ' prefixed to it.
func Error(name string, err error) error { return fmt.Errorf("%s/%s: %s", "plugin", name, err) }
// NextOrFailure calls next.ServeDNS when next is not nil, otherwise it will return, a ServerFailure and a nil error.
func NextOrFailure(name string, next Handler, ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (int, error) { // nolint: golint
if next != nil {
if span := ot.SpanFromContext(ctx); span != nil {
child := span.Tracer().StartSpan(next.Name(), ot.ChildOf(span.Context()))
defer child.Finish()
ctx = ot.ContextWithSpan(ctx, child)
}
return next.ServeDNS(ctx, w, r)
}
return dns.RcodeServerFailure, Error(name, errors.New("no next plugin found"))
}
// ClientWrite returns true if the response has been written to the client.
// Each plugin to adhere to this protocol.
func ClientWrite(rcode int) bool {
switch rcode {
case dns.RcodeServerFailure:
fallthrough
case dns.RcodeRefused:
fallthrough
case dns.RcodeFormatError:
fallthrough
case dns.RcodeNotImplemented:
return false
}
return true
}
// Namespace is the namespace used for the metrics.
const Namespace = "coredns"
// TimeBuckets is based on Prometheus client_golang prometheus.DefBuckets
var TimeBuckets = prometheus.ExponentialBuckets(0.00025, 2, 16) // from 0.25ms to 8 seconds
// ErrOnce is returned when a plugin doesn't support multiple setups per server.
var ErrOnce = errors.New("this plugin can only be used once per Server Block")

11
vendor/github.com/coredns/coredns/plugin/register.go generated vendored
View File

@ -1,11 +0,0 @@
package plugin
import "github.com/caddyserver/caddy"
// Register registers your plugin with CoreDNS and allows it to be called when the server is running.
func Register(name string, action caddy.SetupFunc) {
caddy.RegisterPlugin(name, caddy.Plugin{
ServerType: "dns",
Action: action,
})
}

2
vendor/github.com/coredns/coredns/plugin/test/doc.go generated vendored
View File

@ -1,2 +0,0 @@
// Package test contains helper functions for writing plugin tests.
package test

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