uWebSockets.js/src/HttpResponseWrapper.h
2021-04-10 21:52:39 +02:00

391 lines
17 KiB
C++

/*
* Authored by Alex Hultman, 2018-2020.
* Intellectual property of third-party.
* 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.
*/
#include "App.h"
#include "Utilities.h"
#include <v8.h>
using namespace v8;
struct HttpResponseWrapper {
template <bool SSL>
static inline uWS::HttpResponse<SSL> *getHttpResponse(const FunctionCallbackInfo<Value> &args) {
Isolate *isolate = args.GetIsolate();
auto *res = (uWS::HttpResponse<SSL> *) args.Holder()->GetAlignedPointerFromInternalField(0);
if (!res) {
args.GetReturnValue().Set(isolate->ThrowException(String::NewFromUtf8(isolate, "Invalid access of discarded (invalid, deleted) uWS.HttpResponse/SSLHttpResponse.", NewStringType::kNormal).ToLocalChecked()));
}
return res;
}
/* Marks this JS object invalid */
static inline void invalidateResObject(const FunctionCallbackInfo<Value> &args) {
args.Holder()->SetAlignedPointerInInternalField(0, nullptr);
}
/* Takes nothing, kills the connection */
template <bool SSL>
static void res_close(const FunctionCallbackInfo<Value> &args) {
auto *res = getHttpResponse<SSL>(args);
if (res) {
invalidateResObject(args);
res->close();
args.GetReturnValue().Set(args.Holder());
}
}
/* Takes function of data and isLast. Expects nothing from callback, returns this */
template <bool SSL>
static void res_onData(const FunctionCallbackInfo<Value> &args) {
Isolate *isolate = args.GetIsolate();
auto *res = getHttpResponse<SSL>(args);
if (res) {
/* This thing perfectly fits in with unique_function, and will Reset on destructor */
UniquePersistent<Function> p(isolate, Local<Function>::Cast(args[0]));
res->onData([p = std::move(p), isolate](std::string_view data, bool last) {
HandleScope hs(isolate);
Local<ArrayBuffer> dataArrayBuffer = ArrayBuffer::New(isolate, (void *) data.data(), data.length());
Local<Value> argv[] = {dataArrayBuffer, Boolean::New(isolate, last)};
CallJS(isolate, Local<Function>::New(isolate, p), 2, argv);
dataArrayBuffer->Detach();
});
args.GetReturnValue().Set(args.Holder());
}
}
/* Takes nothing, returns nothing. Cb wants nothing returned. */
template <bool SSL>
static void res_onAborted(const FunctionCallbackInfo<Value> &args) {
Isolate *isolate = args.GetIsolate();
auto *res = getHttpResponse<SSL>(args);
if (res) {
/* This thing perfectly fits in with unique_function, and will Reset on destructor */
UniquePersistent<Function> p(isolate, Local<Function>::Cast(args[0]));
/* This is how we capture res (C++ this in invocation of this function) */
UniquePersistent<Object> resObject(isolate, args.Holder());
res->onAborted([p = std::move(p), resObject = std::move(resObject), isolate]() {
HandleScope hs(isolate);
/* Mark this resObject invalid */
Local<Object>::New(isolate, resObject)->SetAlignedPointerInInternalField(0, nullptr);
CallJS(isolate, Local<Function>::New(isolate, p), 0, nullptr);
});
args.GetReturnValue().Set(args.Holder());
}
}
/* Takes nothing, returns arraybuffer */
template <bool SSL>
static void res_getRemoteAddress(const FunctionCallbackInfo<Value> &args) {
Isolate *isolate = args.GetIsolate();
auto *res = getHttpResponse<SSL>(args);
if (res) {
std::string_view ip = res->getRemoteAddress();
/* Todo: we need to pass a copy here */
args.GetReturnValue().Set(ArrayBuffer::New(isolate, (void *) ip.data(), ip.length()/*, ArrayBufferCreationMode::kInternalized*/));
}
}
/* Takes nothing, returns arraybuffer */
template <bool SSL>
static void res_getRemoteAddressAsText(const FunctionCallbackInfo<Value> &args) {
Isolate *isolate = args.GetIsolate();
auto *res = getHttpResponse<SSL>(args);
if (res) {
std::string_view ip = res->getRemoteAddressAsText();
/* Todo: we need to pass a copy here */
args.GetReturnValue().Set(ArrayBuffer::New(isolate, (void *) ip.data(), ip.length()/*, ArrayBufferCreationMode::kInternalized*/));
}
}
/* Takes nothing, returns arraybuffer */
template <bool SSL>
static void res_getProxiedRemoteAddress(const FunctionCallbackInfo<Value> &args) {
Isolate *isolate = args.GetIsolate();
auto *res = getHttpResponse<SSL>(args);
if (res) {
std::string_view ip = res->getProxiedRemoteAddress();
/* Todo: we need to pass a copy here */
args.GetReturnValue().Set(ArrayBuffer::New(isolate, (void *) ip.data(), ip.length()/*, ArrayBufferCreationMode::kInternalized*/));
}
}
/* Takes nothing, returns arraybuffer */
template <bool SSL>
static void res_getProxiedRemoteAddressAsText(const FunctionCallbackInfo<Value> &args) {
Isolate *isolate = args.GetIsolate();
auto *res = getHttpResponse<SSL>(args);
if (res) {
std::string_view ip = res->getProxiedRemoteAddressAsText();
/* Todo: we need to pass a copy here */
args.GetReturnValue().Set(ArrayBuffer::New(isolate, (void *) ip.data(), ip.length()/*, ArrayBufferCreationMode::kInternalized*/));
}
}
/* Returns the current write offset */
template <bool SSL>
static void res_getWriteOffset(const FunctionCallbackInfo<Value> &args) {
Isolate *isolate = args.GetIsolate();
auto *res = getHttpResponse<SSL>(args);
if (res) {
args.GetReturnValue().Set(Number::New(isolate, getHttpResponse<SSL>(args)->getWriteOffset()));
}
}
/* Takes function of bool(int), returns this */
template <bool SSL>
static void res_onWritable(const FunctionCallbackInfo<Value> &args) {
Isolate *isolate = args.GetIsolate();
auto *res = getHttpResponse<SSL>(args);
if (res) {
/* This thing perfectly fits in with unique_function, and will Reset on destructor */
UniquePersistent<Function> p(isolate, Local<Function>::Cast(args[0]));
res->onWritable([p = std::move(p), isolate](size_t offset) -> bool {
HandleScope hs(isolate);
Local<Value> argv[] = {Number::New(isolate, offset)};
/* We should check if this is really here! */
MaybeLocal<Value> maybeBoolean = CallJS(isolate, Local<Function>::New(isolate, p), 1, argv);
if (maybeBoolean.IsEmpty()) {
std::cerr << "ERROR! onWritable must return a boolean value according to documentation!" << std::endl;
exit(-1);
}
return maybeBoolean.ToLocalChecked()->BooleanValue(isolate);
/* How important is this return? */
});
args.GetReturnValue().Set(args.Holder());
}
}
/* Takes string or arraybuffer, returns this */
template <bool SSL>
static void res_writeStatus(const FunctionCallbackInfo<Value> &args) {
auto *res = getHttpResponse<SSL>(args);
if (res) {
NativeString data(args.GetIsolate(), args[0]);
if (data.isInvalid(args)) {
return;
}
res->writeStatus(data.getString());
args.GetReturnValue().Set(args.Holder());
}
}
/* Takes string or arraybuffer, returns this */
template <bool SSL>
static void res_end(const FunctionCallbackInfo<Value> &args) {
auto *res = getHttpResponse<SSL>(args);
if (res) {
NativeString data(args.GetIsolate(), args[0]);
if (data.isInvalid(args)) {
return;
}
bool closeConnection = false;
if (args.Length() >= 2) {
closeConnection = args[1]->BooleanValue(args.GetIsolate());
}
invalidateResObject(args);
res->end(data.getString(), closeConnection);
args.GetReturnValue().Set(args.Holder());
}
}
/* Takes data and optionally totalLength, returns true for success, false for backpressure */
template <bool SSL>
static void res_tryEnd(const FunctionCallbackInfo<Value> &args) {
Isolate *isolate = args.GetIsolate();
auto *res = getHttpResponse<SSL>(args);
if (res) {
NativeString data(args.GetIsolate(), args[0]);
if (data.isInvalid(args)) {
return;
}
size_t totalSize = 0;
if (args.Length() > 1) {
totalSize = (size_t) args[1]->NumberValue(isolate->GetCurrentContext()).ToChecked();
}
auto [ok, hasResponded] = res->tryEnd(data.getString(), totalSize);
/* Invalidate this object if we responded completely */
if (hasResponded) {
invalidateResObject(args);
}
/* This is a quick fix, it will need updating in µWS later on */
Local<Array> array = Array::New(isolate, 2);
array->Set(isolate->GetCurrentContext(), 0, Boolean::New(isolate, ok)).ToChecked();
array->Set(isolate->GetCurrentContext(), 1, Boolean::New(isolate, hasResponded)).ToChecked();
args.GetReturnValue().Set(array);
}
}
/* Takes data, returns true for success, false for backpressure */
template <bool SSL>
static void res_write(const FunctionCallbackInfo<Value> &args) {
Isolate *isolate = args.GetIsolate();
auto *res = getHttpResponse<SSL>(args);
if (res) {
NativeString data(args.GetIsolate(), args[0]);
if (data.isInvalid(args)) {
return;
}
bool ok = res->write(data.getString());
args.GetReturnValue().Set(Boolean::New(isolate, ok));
}
}
/* Takes key, value. Returns this */
template <bool SSL>
static void res_writeHeader(const FunctionCallbackInfo<Value> &args) {
Isolate *isolate = args.GetIsolate();
auto *res = getHttpResponse<SSL>(args);
if (res) {
NativeString header(args.GetIsolate(), args[0]);
if (header.isInvalid(args)) {
return;
}
NativeString value(args.GetIsolate(), args[1]);
if (value.isInvalid(args)) {
return;
}
res->writeHeader(header.getString(), value.getString());
args.GetReturnValue().Set(args.Holder());
}
}
/* Takes function, returns this */
template <bool SSL>
static void res_cork(const FunctionCallbackInfo<Value> &args) {
Isolate *isolate = args.GetIsolate();
auto *res = getHttpResponse<SSL>(args);
if (res) {
res->cork([cb = Local<Function>::Cast(args[0]), isolate]() {
/* This one is called from JS so we don't need CallJS */
cb->Call(isolate->GetCurrentContext(), isolate->GetCurrentContext()->Global(), 0, nullptr).IsEmpty();
});
args.GetReturnValue().Set(args.Holder());
}
}
/* Takes UserData, secKey, secProtocol, secExtensions, context. Returns nothing */
template <bool SSL>
static void res_upgrade(const FunctionCallbackInfo<Value> &args) {
Isolate *isolate = args.GetIsolate();
auto *res = getHttpResponse<SSL>(args);
if (res) {
/* We require exactly 5 arguments */
if (args.Length() != 5) {
return;
}
NativeString secWebSocketKey(args.GetIsolate(), args[1]);
if (secWebSocketKey.isInvalid(args)) {
return;
}
NativeString secWebSocketProtocol(args.GetIsolate(), args[2]);
if (secWebSocketProtocol.isInvalid(args)) {
return;
}
NativeString secWebSocketExtensions(args.GetIsolate(), args[3]);
if (secWebSocketExtensions.isInvalid(args)) {
return;
}
auto *context = (struct us_socket_context_t *) Local<External>::Cast(args[4])->Value();
invalidateResObject(args);
/* This releases on return */
UniquePersistent<Object> userData;
userData.Reset(isolate, Local<Object>::Cast(args[0]));
/* Immediately calls open handler */
res->template upgrade<PerSocketData>({
std::move(userData)
}, secWebSocketKey.getString(), secWebSocketProtocol.getString(),
secWebSocketExtensions.getString(), context);
/* Nothing is returned */
}
}
template <bool SSL>
static Local<Object> init(Isolate *isolate) {
Local<FunctionTemplate> resTemplateLocal = FunctionTemplate::New(isolate);
if (SSL) {
resTemplateLocal->SetClassName(String::NewFromUtf8(isolate, "uWS.SSLHttpResponse", NewStringType::kNormal).ToLocalChecked());
} else {
resTemplateLocal->SetClassName(String::NewFromUtf8(isolate, "uWS.HttpResponse", NewStringType::kNormal).ToLocalChecked());
}
resTemplateLocal->InstanceTemplate()->SetInternalFieldCount(1);
/* Register our functions */
resTemplateLocal->PrototypeTemplate()->Set(String::NewFromUtf8(isolate, "writeStatus", NewStringType::kNormal).ToLocalChecked(), FunctionTemplate::New(isolate, res_writeStatus<SSL>));
resTemplateLocal->PrototypeTemplate()->Set(String::NewFromUtf8(isolate, "end", NewStringType::kNormal).ToLocalChecked(), FunctionTemplate::New(isolate, res_end<SSL>));
resTemplateLocal->PrototypeTemplate()->Set(String::NewFromUtf8(isolate, "tryEnd", NewStringType::kNormal).ToLocalChecked(), FunctionTemplate::New(isolate, res_tryEnd<SSL>));
resTemplateLocal->PrototypeTemplate()->Set(String::NewFromUtf8(isolate, "write", NewStringType::kNormal).ToLocalChecked(), FunctionTemplate::New(isolate, res_write<SSL>));
resTemplateLocal->PrototypeTemplate()->Set(String::NewFromUtf8(isolate, "writeHeader", NewStringType::kNormal).ToLocalChecked(), FunctionTemplate::New(isolate, res_writeHeader<SSL>));
resTemplateLocal->PrototypeTemplate()->Set(String::NewFromUtf8(isolate, "close", NewStringType::kNormal).ToLocalChecked(), FunctionTemplate::New(isolate, res_close<SSL>));
resTemplateLocal->PrototypeTemplate()->Set(String::NewFromUtf8(isolate, "getWriteOffset", NewStringType::kNormal).ToLocalChecked(), FunctionTemplate::New(isolate, res_getWriteOffset<SSL>));
resTemplateLocal->PrototypeTemplate()->Set(String::NewFromUtf8(isolate, "onWritable", NewStringType::kNormal).ToLocalChecked(), FunctionTemplate::New(isolate, res_onWritable<SSL>));
resTemplateLocal->PrototypeTemplate()->Set(String::NewFromUtf8(isolate, "onAborted", NewStringType::kNormal).ToLocalChecked(), FunctionTemplate::New(isolate, res_onAborted<SSL>));
resTemplateLocal->PrototypeTemplate()->Set(String::NewFromUtf8(isolate, "onData", NewStringType::kNormal).ToLocalChecked(), FunctionTemplate::New(isolate, res_onData<SSL>));
resTemplateLocal->PrototypeTemplate()->Set(String::NewFromUtf8(isolate, "getRemoteAddress", NewStringType::kNormal).ToLocalChecked(), FunctionTemplate::New(isolate, res_getRemoteAddress<SSL>));
resTemplateLocal->PrototypeTemplate()->Set(String::NewFromUtf8(isolate, "cork", NewStringType::kNormal).ToLocalChecked(), FunctionTemplate::New(isolate, res_cork<SSL>));
resTemplateLocal->PrototypeTemplate()->Set(String::NewFromUtf8(isolate, "upgrade", NewStringType::kNormal).ToLocalChecked(), FunctionTemplate::New(isolate, res_upgrade<SSL>));
resTemplateLocal->PrototypeTemplate()->Set(String::NewFromUtf8(isolate, "getRemoteAddressAsText", NewStringType::kNormal).ToLocalChecked(), FunctionTemplate::New(isolate, res_getRemoteAddressAsText<SSL>));
resTemplateLocal->PrototypeTemplate()->Set(String::NewFromUtf8(isolate, "getProxiedRemoteAddress", NewStringType::kNormal).ToLocalChecked(), FunctionTemplate::New(isolate, res_getProxiedRemoteAddress<SSL>));
resTemplateLocal->PrototypeTemplate()->Set(String::NewFromUtf8(isolate, "getProxiedRemoteAddressAsText", NewStringType::kNormal).ToLocalChecked(), FunctionTemplate::New(isolate, res_getProxiedRemoteAddressAsText<SSL>));
/* Create our template */
Local<Object> resObjectLocal = resTemplateLocal->GetFunction(isolate->GetCurrentContext()).ToLocalChecked()->NewInstance(isolate->GetCurrentContext()).ToLocalChecked();
return resObjectLocal;
}
};