74 lines
1.5 KiB
Go
74 lines
1.5 KiB
Go
package goSam
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import (
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"context"
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"fmt"
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"io"
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"net"
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"os"
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)
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// Lookup askes SAM for the internal i2p address from name
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func (c *Client) Lookup(name string) (string, error) {
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r, err := c.sendCmd("NAMING LOOKUP NAME=%s\n", name)
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if err != nil {
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return "", nil
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}
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// TODO: move check into sendCmd()
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if r.Topic != "NAMING" || r.Type != "REPLY" {
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return "", fmt.Errorf("Naming Unknown Reply: %+v\n", r)
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}
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result := r.Pairs["RESULT"]
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if result != "OK" {
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return "", ReplyError{result, r}
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}
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if r.Pairs["NAME"] != name {
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// somehow different on i2pd
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if r.Pairs["NAME"] != "ME" {
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return "", fmt.Errorf("Lookup() Replyed to another name.\nWanted:%s\nGot: %+v\n", name, r)
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}
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fmt.Fprintln(os.Stderr, "WARNING: Lookup() Replyed to another name. assuming i2pd c++ fluke")
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}
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return r.Pairs["VALUE"], nil
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}
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func (c *Client) forward(client, conn net.Conn) {
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go func() {
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defer client.Close()
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defer conn.Close()
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io.Copy(client, conn)
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}()
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go func() {
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defer client.Close()
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defer conn.Close()
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io.Copy(conn, client)
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}()
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}
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func (c *Client) Resolve(ctx context.Context, name string) (context.Context, net.IP, error) {
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if c.lastaddr == "invalid" || c.lastaddr != name {
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client, err := c.DialContext(ctx, "", name)
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if err != nil {
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return ctx, nil, err
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}
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ln, err := net.Listen("tcp", "127.0.0.1:")
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if err != nil {
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return ctx, nil, err
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}
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go func() {
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for {
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conn, err := ln.Accept()
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if err != nil {
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fmt.Println(err.Error())
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}
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go c.forward(client, conn)
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}
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}()
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}
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return ctx, nil, nil
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}
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