guoswork/frp
1
0
Fork 0
mirror of https://gitee.com/IrisVega/frp.git synced 2024-11-01 22:31:29 +08:00
Code Issues Packages Projects Releases Wiki Activity

Merge pull request #1190 from fatedier/new

Browse Source 
new features
This commit is contained in:
fatedier 2019-04-10 13:57:59 +08:00 committed by GitHub
commit 12c5c553c3
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
34 changed files with 1179 additions and 41 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

55
README.md
View File

@ -22,6 +22,7 @@ Now it also try to support p2p connect.
* [Forward DNS query request](#forward-dns-query-request)
* [Forward unix domain socket](#forward-unix-domain-socket)
* [Expose a simple http file server](#expose-a-simple-http-file-server)
* [Enable HTTPS for local HTTP service](#enable-https-for-local-http-service)
* [Expose your service in security](#expose-your-service-in-security)
* [P2P Mode](#p2p-mode)
* [Features](#features)
@ -44,6 +45,8 @@ Now it also try to support p2p connect.
* [Rewriting the Host Header](#rewriting-the-host-header)
* [Set Headers In HTTP Request](#set-headers-in-http-request)
* [Get Real IP](#get-real-ip)
* [HTTP X-Forwarded-For](#http-x-forwarded-for)
* [Proxy Protocol](#proxy-protocol)
* [Password protecting your web service](#password-protecting-your-web-service)
* [Custom subdomain names](#custom-subdomain-names)
* [URL routing](#url-routing)
@ -243,11 +246,34 @@ Configure frps same as above.
2. Visit `http://x.x.x.x:6000/static/` by your browser, set correct user and password, so you can see files in `/tmp/file`.
### Enable HTTPS for local HTTP service
1. Start frpc with configurations:
```ini
# frpc.ini
[common]
server_addr = x.x.x.x
server_port = 7000
[test_htts2http]
type = https
custom_domains = test.yourdomain.com
plugin = https2http
plugin_local_addr = 127.0.0.1:80
plugin_crt_path = ./server.crt
plugin_key_path = ./server.key
plugin_host_header_rewrite = 127.0.0.1
```
2. Visit `https://test.yourdomain.com`.
### Expose your service in security
For some services, if expose them to the public network directly will be a security risk.
**stcp(secret tcp)** help you create a proxy avoiding any one can access it.
**stcp(secret tcp)** helps you create a proxy avoiding any one can access it.
Configure frps same as above.
@ -484,8 +510,6 @@ tcp_mux = false
### Support KCP Protocol
frp support kcp protocol since v0.12.0.
KCP is a fast and reliable protocol that can achieve the transmission effect of a reduction of the average latency by 30% to 40% and reduction of the maximum delay by a factor of three, at the cost of 10% to 20% more bandwidth wasted than TCP.
Using kcp in frp:
@ -639,9 +663,32 @@ In this example, it will set header `X-From-Where: frp` to http request.
### Get Real IP
#### HTTP X-Forwarded-For
Features for http proxy only.
You can get user's real IP from http request header `X-Forwarded-For` and `X-Real-IP`.
You can get user's real IP from HTTP request header `X-Forwarded-For` and `X-Real-IP`.
#### Proxy Protocol
frp support Proxy Protocol to send user's real IP to local service. It support all types without UDP.
Here is an example for https service:
```ini
# frpc.ini
[web]
type = https
local_port = 443
custom_domains = test.yourdomain.com
# now v1 and v2 is supported
proxy_protocol_version = v2
```
You can enable Proxy Protocol support in nginx to parse user's real IP to http header `X-Real-IP`.
Then you can get it from HTTP request header in your local service.
### Password protecting your web service

62
README_zh.md
View File

@ -18,6 +18,7 @@ frp 是一个可用于内网穿透的高性能的反向代理应用，支持 tcp
* [转发 DNS 查询请求](#转发-dns-查询请求)
* [转发 Unix域套接字](#转发-unix域套接字)
* [对外提供简单的文件访问服务](#对外提供简单的文件访问服务)
* [为本地 HTTP 服务启用 HTTPS](#为本地-http-服务启用-https)
* [安全地暴露内网服务](#安全地暴露内网服务)
* [点对点内网穿透](#点对点内网穿透)
* [功能说明](#功能说明)
@ -40,6 +41,8 @@ frp 是一个可用于内网穿透的高性能的反向代理应用，支持 tcp
* [修改 Host Header](#修改-host-header)
* [设置 HTTP 请求的 header](#设置-http-请求的-header)
* [获取用户真实 IP](#获取用户真实-ip)
* [HTTP X-Forwarded-For](#http-x-forwarded-for)
* [Proxy Protocol](#proxy-protocol)
* [通过密码保护你的 web 服务](#通过密码保护你的-web-服务)
* [自定义二级域名](#自定义二级域名)
* [URL 路由](#url-路由)
@ -244,6 +247,33 @@ frps 的部署步骤同上。
2. 通过浏览器访问 `http://x.x.x.x:6000/static/` 来查看位于 `/tmp/file` 目录下的文件，会要求输入已设置好的用户名和密码。
### 为本地 HTTP 服务启用 HTTPS
通过 `https2http` 插件可以让本地 HTTP 服务转换成 HTTPS 服务对外提供。
1. 启用 frpc，启用 `https2http` 插件，配置如下:
```ini
# frpc.ini
[common]
server_addr = x.x.x.x
server_port = 7000
[test_htts2http]
type = https
custom_domains = test.yourdomain.com
plugin = https2http
plugin_local_addr = 127.0.0.1:80
# HTTPS 证书相关的配置
plugin_crt_path = ./server.crt
plugin_key_path = ./server.key
plugin_host_header_rewrite = 127.0.0.1
```
2. 通过浏览器访问 `https://test.yourdomain.com` 即可。
### 安全地暴露内网服务
对于某些服务来说如果直接暴露于公网上将会存在安全隐患。
@ -514,7 +544,7 @@ tcp_mux = false
### 底层通信可选 kcp 协议
从 v0.12.0 版本开始，底层通信协议支持选择 kcp 协议，在弱网环境下传输效率提升明显，但是会有一些额外的流量消耗。
底层通信协议支持选择 kcp 协议，在弱网环境下传输效率提升明显，但是会有一些额外的流量消耗。
开启 kcp 协议支持：
@ -566,6 +596,7 @@ tcp_mux = false
### 负载均衡
可以将多个相同类型的 proxy 加入到同一个 group 中，从而实现负载均衡的功能。
目前只支持 tcp 类型的 proxy。
```ini
@ -668,7 +699,34 @@ header_X-From-Where = frp
### 获取用户真实 IP
目前只有 **http** 类型的代理支持这一功能，可以通过用户请求的 header 中的 `X-Forwarded-For` 和 `X-Real-IP` 来获取用户真实 IP。
#### HTTP X-Forwarded-For
目前只有 **http** 类型的代理支持这一功能，可以通过用户请求的 header 中的 `X-Forwarded-For` 来获取用户真实 IP，默认启用。
#### Proxy Protocol
frp 支持通过 **Proxy Protocol** 协议来传递经过 frp 代理的请求的真实 IP，此功能支持所有以 TCP 为底层协议的类型，不支持 UDP。
**Proxy Protocol** 功能启用后，frpc 在和本地服务建立连接后，会先发送一段 **Proxy Protocol** 的协议内容给本地服务，本地服务通过解析这一内容可以获得访问用户的真实 IP。所以不仅仅是 HTTP 服务，任何的 TCP 服务，只要支持这一协议，都可以获得用户的真实 IP 地址。
需要注意的是，在代理配置中如果要启用此功能，需要本地的服务能够支持 **Proxy Protocol** 这一协议，目前 nginx 和 haproxy 都能够很好的支持。
这里以 https 类型为例:
```ini
# frpc.ini
[web]
type = https
local_port = 443
custom_domains = test.yourdomain.com
# 目前支持 v1 和 v2 两个版本的 proxy protocol 协议。
proxy_protocol_version = v2
```
只需要在代理配置中增加一行 `proxy_protocol_version = v2` 即可开启此功能。
本地的 https 服务可以通过在 nginx 的配置中启用 **Proxy Protocol** 的解析并将结果设置在 `X-Real-IP` 这个 Header 中就可以在自己的 Web 服务中通过 `X-Real-IP` 获取到用户的真实 IP。
### 通过密码保护你的 web 服务

9
client/control.go
View File

@ -131,7 +131,7 @@ func (ctl *Control) HandleReqWorkConn(inMsg *msg.ReqWorkConn) {
workConn.AddLogPrefix(startMsg.ProxyName)
// dispatch this work connection to related proxy
ctl.pm.HandleWorkConn(startMsg.ProxyName, workConn)
ctl.pm.HandleWorkConn(startMsg.ProxyName, workConn, &startMsg)
}
func (ctl *Control) HandleNewProxyResp(inMsg *msg.NewProxyResp) {
@ -148,6 +148,9 @@ func (ctl *Control) HandleNewProxyResp(inMsg *msg.NewProxyResp) {
func (ctl *Control) Close() error {
ctl.pm.Close()
ctl.conn.Close()
if ctl.session != nil {
ctl.session.Close()
}
return nil
}
@ -202,6 +205,7 @@ func (ctl *Control) reader() {
return
} else {
ctl.Warn("read error: %v", err)
ctl.conn.Close()
return
}
} else {
@ -300,6 +304,9 @@ func (ctl *Control) worker() {
ctl.vm.Close()
close(ctl.closedDoneCh)
if ctl.session != nil {
ctl.session.Close()
}
return
}
}

58
client/proxy/proxy.go
View File

@ -37,6 +37,7 @@ import (
frpIo "github.com/fatedier/golib/io"
"github.com/fatedier/golib/pool"
fmux "github.com/hashicorp/yamux"
pp "github.com/pires/go-proxyproto"
)
// Proxy defines how to handle work connections for different proxy type.
@ -44,7 +45,7 @@ type Proxy interface {
Run() error
// InWorkConn accept work connections registered to server.
InWorkConn(conn frpNet.Conn)
InWorkConn(frpNet.Conn, *msg.StartWorkConn)
Close()
log.Logger
@ -119,9 +120,9 @@ func (pxy *TcpProxy) Close() {
}
}
func (pxy *TcpProxy) InWorkConn(conn frpNet.Conn) {
func (pxy *TcpProxy) InWorkConn(conn frpNet.Conn, m *msg.StartWorkConn) {
HandleTcpWorkConnection(&pxy.cfg.LocalSvrConf, pxy.proxyPlugin, &pxy.cfg.BaseProxyConf, conn,
[]byte(g.GlbClientCfg.Token))
[]byte(g.GlbClientCfg.Token), m)
}
// HTTP
@ -148,9 +149,9 @@ func (pxy *HttpProxy) Close() {
}
}
func (pxy *HttpProxy) InWorkConn(conn frpNet.Conn) {
func (pxy *HttpProxy) InWorkConn(conn frpNet.Conn, m *msg.StartWorkConn) {
HandleTcpWorkConnection(&pxy.cfg.LocalSvrConf, pxy.proxyPlugin, &pxy.cfg.BaseProxyConf, conn,
[]byte(g.GlbClientCfg.Token))
[]byte(g.GlbClientCfg.Token), m)
}
// HTTPS
@ -177,9 +178,9 @@ func (pxy *HttpsProxy) Close() {
}
}
func (pxy *HttpsProxy) InWorkConn(conn frpNet.Conn) {
func (pxy *HttpsProxy) InWorkConn(conn frpNet.Conn, m *msg.StartWorkConn) {
HandleTcpWorkConnection(&pxy.cfg.LocalSvrConf, pxy.proxyPlugin, &pxy.cfg.BaseProxyConf, conn,
[]byte(g.GlbClientCfg.Token))
[]byte(g.GlbClientCfg.Token), m)
}
// STCP
@ -206,9 +207,9 @@ func (pxy *StcpProxy) Close() {
}
}
func (pxy *StcpProxy) InWorkConn(conn frpNet.Conn) {
func (pxy *StcpProxy) InWorkConn(conn frpNet.Conn, m *msg.StartWorkConn) {
HandleTcpWorkConnection(&pxy.cfg.LocalSvrConf, pxy.proxyPlugin, &pxy.cfg.BaseProxyConf, conn,
[]byte(g.GlbClientCfg.Token))
[]byte(g.GlbClientCfg.Token), m)
}
// XTCP
@ -235,7 +236,7 @@ func (pxy *XtcpProxy) Close() {
}
}
func (pxy *XtcpProxy) InWorkConn(conn frpNet.Conn) {
func (pxy *XtcpProxy) InWorkConn(conn frpNet.Conn, m *msg.StartWorkConn) {
defer conn.Close()
var natHoleSidMsg msg.NatHoleSid
err := msg.ReadMsgInto(conn, &natHoleSidMsg)
@ -353,7 +354,7 @@ func (pxy *XtcpProxy) InWorkConn(conn frpNet.Conn) {
}
HandleTcpWorkConnection(&pxy.cfg.LocalSvrConf, pxy.proxyPlugin, &pxy.cfg.BaseProxyConf,
frpNet.WrapConn(muxConn), []byte(pxy.cfg.Sk))
frpNet.WrapConn(muxConn), []byte(pxy.cfg.Sk), m)
}
func (pxy *XtcpProxy) sendDetectMsg(addr string, port int, laddr *net.UDPAddr, content []byte) (err error) {
@ -415,7 +416,7 @@ func (pxy *UdpProxy) Close() {
}
}
func (pxy *UdpProxy) InWorkConn(conn frpNet.Conn) {
func (pxy *UdpProxy) InWorkConn(conn frpNet.Conn, m *msg.StartWorkConn) {
pxy.Info("incoming a new work connection for udp proxy, %s", conn.RemoteAddr().String())
// close resources releated with old workConn
pxy.Close()
@ -482,7 +483,7 @@ func (pxy *UdpProxy) InWorkConn(conn frpNet.Conn) {
// Common handler for tcp work connections.
func HandleTcpWorkConnection(localInfo *config.LocalSvrConf, proxyPlugin plugin.Plugin,
baseInfo *config.BaseProxyConf, workConn frpNet.Conn, encKey []byte) {
baseInfo *config.BaseProxyConf, workConn frpNet.Conn, encKey []byte, m *msg.StartWorkConn) {
var (
remote io.ReadWriteCloser
@ -518,6 +519,37 @@ func HandleTcpWorkConnection(localInfo *config.LocalSvrConf, proxyPlugin plugin.
workConn.Debug("join connections, localConn(l[%s] r[%s]) workConn(l[%s] r[%s])", localConn.LocalAddr().String(),
localConn.RemoteAddr().String(), workConn.LocalAddr().String(), workConn.RemoteAddr().String())
// check if we need to send proxy protocol info
if baseInfo.ProxyProtocolVersion != "" {
if m.SrcAddr != "" && m.SrcPort != 0 {
if m.DstAddr == "" {
m.DstAddr = "127.0.0.1"
}
h := &pp.Header{
Command: pp.PROXY,
SourceAddress: net.ParseIP(m.SrcAddr),
SourcePort: m.SrcPort,
DestinationAddress: net.ParseIP(m.DstAddr),
DestinationPort: m.DstPort,
}
if h.SourceAddress.To16() == nil {
h.TransportProtocol = pp.TCPv4
} else {
h.TransportProtocol = pp.TCPv6
}
if baseInfo.ProxyProtocolVersion == "v1" {
h.Version = 1
} else if baseInfo.ProxyProtocolVersion == "v2" {
h.Version = 2
}
h.WriteTo(localConn)
}
}
frpIo.Join(localConn, remote)
workConn.Debug("join connections closed")
}

4
client/proxy/proxy_manager.go
View File

@ -58,12 +58,12 @@ func (pm *ProxyManager) Close() {
pm.proxies = make(map[string]*ProxyWrapper)
}
func (pm *ProxyManager) HandleWorkConn(name string, workConn frpNet.Conn) {
func (pm *ProxyManager) HandleWorkConn(name string, workConn frpNet.Conn, m *msg.StartWorkConn) {
pm.mu.RLock()
pw, ok := pm.proxies[name]
pm.mu.RUnlock()
if ok {
pw.InWorkConn(workConn)
pw.InWorkConn(workConn, m)
} else {
workConn.Close()
}

4
client/proxy/proxy_wrapper.go
View File

@ -217,13 +217,13 @@ func (pw *ProxyWrapper) statusFailedCallback() {
pw.Info("health check failed")
}
func (pw *ProxyWrapper) InWorkConn(workConn frpNet.Conn) {
func (pw *ProxyWrapper) InWorkConn(workConn frpNet.Conn, m *msg.StartWorkConn) {
pw.mu.RLock()
pxy := pw.pxy
pw.mu.RUnlock()
if pxy != nil {
workConn.Debug("start a new work connection, localAddr: %s remoteAddr: %s", workConn.LocalAddr().String(), workConn.RemoteAddr().String())
go pxy.InWorkConn(workConn)
go pxy.InWorkConn(workConn, m)
} else {
workConn.Close()
}

2
cmd/frpc/sub/root.go
View File

@ -73,7 +73,7 @@ var (
)
func init() {
rootCmd.PersistentFlags().StringVarP(&cfgFile, "", "c", "./frpc.ini", "config file of frpc")
rootCmd.PersistentFlags().StringVarP(&cfgFile, "config", "c", "./frpc.ini", "config file of frpc")
rootCmd.PersistentFlags().BoolVarP(&showVersion, "version", "v", false, "version of frpc")
kcpDoneCh = make(chan struct{})

2
cmd/frps/root.go
View File

@ -62,7 +62,7 @@ var (
)
func init() {
rootCmd.PersistentFlags().StringVarP(&cfgFile, "", "c", "", "config file of frps")
rootCmd.PersistentFlags().StringVarP(&cfgFile, "config", "c", "", "config file of frps")
rootCmd.PersistentFlags().BoolVarP(&showVersion, "version", "v", false, "version of frpc")
rootCmd.PersistentFlags().StringVarP(&bindAddr, "bind_addr", "", "0.0.0.0", "bind address")

12
conf/frpc_full.ini
View File

@ -154,6 +154,9 @@ use_encryption = false
use_compression = false
subdomain = web01
custom_domains = web02.yourdomain.com
# if not empty, frpc will use proxy protocol to transfer connection info to your local service
# v1 or v2 or empty
proxy_protocol_version = v2
[plugin_unix_domain_socket]
type = tcp
@ -187,6 +190,15 @@ plugin_strip_prefix = static
plugin_http_user = abc
plugin_http_passwd = abc
[plugin_https2http]
type = https
custom_domains = test.yourdomain.com
plugin = https2http
plugin_local_addr = 127.0.0.1:80
plugin_crt_path = ./server.crt
plugin_key_path = ./server.key
plugin_host_header_rewrite = 127.0.0.1
[secret_tcp]
# If the type is secret tcp, remote_port is useless
# Who want to connect local port should deploy another frpc with stcp proxy and role is visitor

1
go.mod
View File

@ -17,6 +17,7 @@ require (
github.com/klauspost/cpuid v1.2.0 // indirect
github.com/klauspost/reedsolomon v1.9.1 // indirect
github.com/mattn/go-runewidth v0.0.4 // indirect
github.com/pires/go-proxyproto v0.0.0-20190111085350-4d51b51e3bfc
github.com/pkg/errors v0.8.0 // indirect
github.com/pmezard/go-difflib v1.0.0 // indirect
github.com/rakyll/statik v0.1.1

2
go.sum
View File

@ -20,6 +20,8 @@ github.com/klauspost/reedsolomon v1.9.1 h1:kYrT1MlR4JH6PqOpC+okdb9CDTcwEC/BqpzK4
github.com/klauspost/reedsolomon v1.9.1/go.mod h1:CwCi+NUr9pqSVktrkN+Ondf06rkhYZ/pcNv7fu+8Un4=
github.com/mattn/go-runewidth v0.0.4 h1:2BvfKmzob6Bmd4YsL0zygOqfdFnK7GR4QL06Do4/p7Y=
github.com/mattn/go-runewidth v0.0.4/go.mod h1:LwmH8dsx7+W8Uxz3IHJYH5QSwggIsqBzpuz5H//U1FU=
github.com/pires/go-proxyproto v0.0.0-20190111085350-4d51b51e3bfc h1:lNOt1SMsgHXTdpuGw+RpnJtzUcCb/oRKZP65pBy9pr8=
github.com/pires/go-proxyproto v0.0.0-20190111085350-4d51b51e3bfc/go.mod h1:6/gX3+E/IYGa0wMORlSMla999awQFdbaeQCHjSMKIzY=
github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/rakyll/statik v0.1.1/go.mod h1:OEi9wJV/fMUAGx1eNjq75DKDsJVuEv1U0oYdX6GX8Zs=

14
models/config/proxy.go
View File

@ -107,8 +107,10 @@ type BaseProxyConf struct {
Group string `json:"group"`
GroupKey string `json:"group_key"`
// only used for client
ProxyProtocolVersion string `json:"proxy_protocol_version"`
LocalSvrConf
HealthCheckConf // only used for client
HealthCheckConf
}
func (cfg *BaseProxyConf) GetBaseInfo() *BaseProxyConf {
@ -121,7 +123,8 @@ func (cfg *BaseProxyConf) compare(cmp *BaseProxyConf) bool {
cfg.UseEncryption != cmp.UseEncryption ||
cfg.UseCompression != cmp.UseCompression ||
cfg.Group != cmp.Group ||
cfg.GroupKey != cmp.GroupKey {
cfg.GroupKey != cmp.GroupKey ||
cfg.ProxyProtocolVersion != cmp.ProxyProtocolVersion {
return false
}
if !cfg.LocalSvrConf.compare(&cmp.LocalSvrConf) {
@ -162,6 +165,7 @@ func (cfg *BaseProxyConf) UnmarshalFromIni(prefix string, name string, section i
cfg.Group = section["group"]
cfg.GroupKey = section["group_key"]
cfg.ProxyProtocolVersion = section["proxy_protocol_version"]
if err := cfg.LocalSvrConf.UnmarshalFromIni(prefix, name, section); err != nil {
return err
@ -194,6 +198,12 @@ func (cfg *BaseProxyConf) MarshalToMsg(pMsg *msg.NewProxy) {
}
func (cfg *BaseProxyConf) checkForCli() (err error) {
if cfg.ProxyProtocolVersion != "" {
if cfg.ProxyProtocolVersion != "v1" && cfg.ProxyProtocolVersion != "v2" {
return fmt.Errorf("no support proxy protocol version: %s", cfg.ProxyProtocolVersion)
}
}
if err = cfg.LocalSvrConf.checkForCli(); err != nil {
return
}

4
models/msg/msg.go
View File

@ -126,6 +126,10 @@ type ReqWorkConn struct {
type StartWorkConn struct {
ProxyName string `json:"proxy_name"`
SrcAddr string `json:"src_addr"`
DstAddr string `json:"dst_addr"`
SrcPort uint16 `json:"src_port"`
DstPort uint16 `json:"dst_port"`
}
type NewVisitorConn struct {

119
models/plugin/https2http.go Normal file
View File

@ -0,0 +1,119 @@
// Copyright 2019 fatedier, fatedier@gmail.com
//
// 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 plugin
import (
"crypto/tls"
"fmt"
"io"
"net/http"
"net/http/httputil"
frpNet "github.com/fatedier/frp/utils/net"
)
const PluginHTTPS2HTTP = "https2http"
func init() {
Register(PluginHTTPS2HTTP, NewHTTPS2HTTPPlugin)
}
type HTTPS2HTTPPlugin struct {
crtPath string
keyPath string
hostHeaderRewrite string
localAddr string
l *Listener
s *http.Server
}
func NewHTTPS2HTTPPlugin(params map[string]string) (Plugin, error) {
crtPath := params["plugin_crt_path"]
keyPath := params["plugin_key_path"]
localAddr := params["plugin_local_addr"]
hostHeaderRewrite := params["plugin_host_header_rewrite"]
if crtPath == "" {
return nil, fmt.Errorf("plugin_crt_path is required")
}
if keyPath == "" {
return nil, fmt.Errorf("plugin_key_path is required")
}
if localAddr == "" {
return nil, fmt.Errorf("plugin_local_addr is required")
}
listener := NewProxyListener()
p := &HTTPS2HTTPPlugin{
crtPath: crtPath,
keyPath: keyPath,
localAddr: localAddr,
hostHeaderRewrite: hostHeaderRewrite,
l: listener,
}
rp := &httputil.ReverseProxy{
Director: func(req *http.Request) {
req.URL.Scheme = "http"
req.URL.Host = p.localAddr
if p.hostHeaderRewrite != "" {
req.Host = p.hostHeaderRewrite
}
},
}
p.s = &http.Server{
Handler: rp,
}
tlsConfig, err := p.genTLSConfig()
if err != nil {
return nil, fmt.Errorf("gen TLS config error: %v", err)
}
ln := tls.NewListener(listener, tlsConfig)
go p.s.Serve(ln)
return p, nil
}
func (p *HTTPS2HTTPPlugin) genTLSConfig() (*tls.Config, error) {
cert, err := tls.LoadX509KeyPair(p.crtPath, p.keyPath)
if err != nil {
return nil, err
}
config := &tls.Config{Certificates: []tls.Certificate{cert}}
return config, nil
}
func (p *HTTPS2HTTPPlugin) Handle(conn io.ReadWriteCloser, realConn frpNet.Conn) {
wrapConn := frpNet.WrapReadWriteCloserToConn(conn, realConn)
p.l.PutConn(wrapConn)
}
func (p *HTTPS2HTTPPlugin) handleRequest(w http.ResponseWriter, r *http.Request) {
w.Write([]byte("hello"))
return
}
func (p *HTTPS2HTTPPlugin) Name() string {
return PluginHTTPS2HTTP
}
func (p *HTTPS2HTTPPlugin) Close() error {
return nil
}

1
server/control.go
View File

@ -301,6 +301,7 @@ func (ctl *Control) reader() {
return
} else {
ctl.conn.Warn("read error: %v", err)
ctl.conn.Close()
return
}
} else {

15
server/proxy/http.go
View File

@ -16,6 +16,7 @@ package proxy
import (
"io"
"net"
"strings"
"github.com/fatedier/frp/g"
@ -51,6 +52,10 @@ func (pxy *HttpProxy) Run() (remoteAddr string, err error) {
addrs := make([]string, 0)
for _, domain := range pxy.cfg.CustomDomains {
if domain == "" {
continue
}
routeConfig.Domain = domain
for _, location := range locations {
routeConfig.Location = location
@ -93,8 +98,14 @@ func (pxy *HttpProxy) GetConf() config.ProxyConf {
return pxy.cfg
}
func (pxy *HttpProxy) GetRealConn() (workConn frpNet.Conn, err error) {
tmpConn, errRet := pxy.GetWorkConnFromPool()
func (pxy *HttpProxy) GetRealConn(remoteAddr string) (workConn frpNet.Conn, err error) {
rAddr, errRet := net.ResolveTCPAddr("tcp", remoteAddr)
if errRet != nil {
pxy.Warn("resolve TCP addr [%s] error: %v", remoteAddr, errRet)
// we do not return error here since remoteAddr is not necessary for proxies without proxy protocol enabled
}
tmpConn, errRet := pxy.GetWorkConnFromPool(rAddr, nil)
if errRet != nil {
err = errRet
return

4
server/proxy/https.go
View File

@ -33,6 +33,10 @@ func (pxy *HttpsProxy) Run() (remoteAddr string, err error) {
addrs := make([]string, 0)
for _, domain := range pxy.cfg.CustomDomains {
if domain == "" {
continue
}
routeConfig.Domain = domain
l, errRet := pxy.rc.VhostHttpsMuxer.Listen(routeConfig)
if errRet != nil {

29
server/proxy/proxy.go
View File

@ -17,6 +17,8 @@ package proxy
import (
"fmt"
"io"
"net"
"strconv"
"sync"
"github.com/fatedier/frp/g"
@ -36,7 +38,7 @@ type Proxy interface {
Run() (remoteAddr string, err error)
GetName() string
GetConf() config.ProxyConf
GetWorkConnFromPool() (workConn frpNet.Conn, err error)
GetWorkConnFromPool(src, dst net.Addr) (workConn frpNet.Conn, err error)
GetUsedPortsNum() int
Close()
log.Logger
@ -70,7 +72,7 @@ func (pxy *BaseProxy) Close() {
}
}
func (pxy *BaseProxy) GetWorkConnFromPool() (workConn frpNet.Conn, err error) {
func (pxy *BaseProxy) GetWorkConnFromPool(src, dst net.Addr) (workConn frpNet.Conn, err error) {
// try all connections from the pool
for i := 0; i < pxy.poolCount+1; i++ {
if workConn, err = pxy.getWorkConnFn(); err != nil {
@ -80,8 +82,29 @@ func (pxy *BaseProxy) GetWorkConnFromPool() (workConn frpNet.Conn, err error) {
pxy.Info("get a new work connection: [%s]", workConn.RemoteAddr().String())
workConn.AddLogPrefix(pxy.GetName())
var (
srcAddr string
dstAddr string
srcPortStr string
dstPortStr string
srcPort int
dstPort int
)
if src != nil {
srcAddr, srcPortStr, _ = net.SplitHostPort(src.String())
srcPort, _ = strconv.Atoi(srcPortStr)
}
if dst != nil {
dstAddr, dstPortStr, _ = net.SplitHostPort(dst.String())
dstPort, _ = strconv.Atoi(dstPortStr)
}
err := msg.WriteMsg(workConn, &msg.StartWorkConn{
ProxyName: pxy.GetName(),
SrcAddr: srcAddr,
SrcPort: uint16(srcPort),
DstAddr: dstAddr,
DstPort: uint16(dstPort),
})
if err != nil {
workConn.Warn("failed to send message to work connection from pool: %v, times: %d", err, i)
@ -177,7 +200,7 @@ func HandleUserTcpConnection(pxy Proxy, userConn frpNet.Conn, statsCollector sta
defer userConn.Close()
// try all connections from the pool
workConn, err := pxy.GetWorkConnFromPool()
workConn, err := pxy.GetWorkConnFromPool(userConn.RemoteAddr(), userConn.LocalAddr())
if err != nil {
return
}

2
server/proxy/udp.go
View File

@ -160,7 +160,7 @@ func (pxy *UdpProxy) Run() (remoteAddr string, err error) {
// Sleep a while for waiting control send the NewProxyResp to client.
time.Sleep(500 * time.Millisecond)
for {
workConn, err := pxy.GetWorkConnFromPool()
workConn, err := pxy.GetWorkConnFromPool(nil, nil)
if err != nil {
time.Sleep(1 * time.Second)
// check if proxy is closed

2
server/proxy/xtcp.go
View File

@ -44,7 +44,7 @@ func (pxy *XtcpProxy) Run() (remoteAddr string, err error) {
break
case sidRequest := <-sidCh:
sr := sidRequest
workConn, errRet := pxy.GetWorkConnFromPool()
workConn, errRet := pxy.GetWorkConnFromPool(nil, nil)
if errRet != nil {
continue
}

2
utils/version/version.go
View File

@ -19,7 +19,7 @@ import (
"strings"
)
var version string = "0.25.3"
var version string = "0.26.0"
func Full() string {
return version

10
utils/vhost/newhttp.go → utils/vhost/http.go
View File

@ -89,13 +89,15 @@ func NewHttpReverseProxy(option HttpReverseProxyOptions) *HttpReverseProxy {
DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
url := ctx.Value("url").(string)
host := getHostFromAddr(ctx.Value("host").(string))
return rp.CreateConnection(host, url)
remote := ctx.Value("remote").(string)
return rp.CreateConnection(host, url, remote)
},
},
WebSocketDialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
url := ctx.Value("url").(string)
host := getHostFromAddr(ctx.Value("host").(string))
return rp.CreateConnection(host, url)
remote := ctx.Value("remote").(string)
return rp.CreateConnection(host, url, remote)
},
BufferPool: newWrapPool(),
ErrorLog: log.New(newWrapLogger(), "", 0),
@ -138,12 +140,12 @@ func (rp *HttpReverseProxy) GetHeaders(domain string, location string) (headers
return
}
func (rp *HttpReverseProxy) CreateConnection(domain string, location string) (net.Conn, error) {
func (rp *HttpReverseProxy) CreateConnection(domain string, location string, remoteAddr string) (net.Conn, error) {
vr, ok := rp.getVhost(domain, location)
if ok {
fn := vr.payload.(*VhostRouteConfig).CreateConnFn
if fn != nil {
return fn()
return fn(remoteAddr)
}
}
return nil, fmt.Errorf("%v: %s %s", ErrNoDomain, domain, location)

2
utils/vhost/reverseproxy.go
View File

@ -158,6 +158,7 @@ func (p *ReverseProxy) serveWebSocket(rw http.ResponseWriter, req *http.Request)
req = req.WithContext(context.WithValue(req.Context(), "url", req.URL.Path))
req = req.WithContext(context.WithValue(req.Context(), "host", req.Host))
req = req.WithContext(context.WithValue(req.Context(), "remote", req.RemoteAddr))
targetConn, err := p.WebSocketDialContext(req.Context(), "tcp", "")
if err != nil {
@ -215,6 +216,7 @@ func (p *ReverseProxy) serveHTTP(rw http.ResponseWriter, req *http.Request) {
// Modify for frp
outreq = outreq.WithContext(context.WithValue(outreq.Context(), "url", req.URL.Path))
outreq = outreq.WithContext(context.WithValue(outreq.Context(), "host", req.Host))
outreq = outreq.WithContext(context.WithValue(outreq.Context(), "remote", req.RemoteAddr))
p.Director(outreq)
outreq.Close = false

2
utils/vhost/vhost.go
View File

@ -51,7 +51,7 @@ func NewVhostMuxer(listener frpNet.Listener, vhostFunc muxFunc, authFunc httpAut
return mux, nil
}
type CreateConnFunc func() (frpNet.Conn, error)
type CreateConnFunc func(remoteAddr string) (frpNet.Conn, error)
type VhostRouteConfig struct {
Domain string

9
vendor/github.com/pires/go-proxyproto/.gitignore generated vendored Normal file
View File

@ -0,0 +1,9 @@
# Compiled Object files, Static and Dynamic libs (Shared Objects)
*.o
*.a
*.so
# Folders
.idea
bin
pkg

15
vendor/github.com/pires/go-proxyproto/.travis.yml generated vendored Normal file
View File

@ -0,0 +1,15 @@
language: go
sudo: false
go:
- 1.11
install:
- go get golang.org/x/tools/cmd/cover
- go get github.com/mattn/goveralls
script:
- go fmt
- go vet
- go test -v -covermode=count -coverprofile=coverage.out
- $HOME/gopath/bin/goveralls -coverprofile=coverage.out -service=travis-ci -repotoken $COVERALLS_TOKEN
env:
global:
secure: 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

201
vendor/github.com/pires/go-proxyproto/LICENSE generated vendored Normal file
View File

@ -0,0 +1,201 @@
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,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
pertain to any part of the Derivative Works, in at least one
of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
documentation, if provided along with the Derivative Works; or,
within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "{}"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.
Copyright {yyyy} {name of copyright owner}
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.

32
vendor/github.com/pires/go-proxyproto/README.md generated vendored Normal file
View File

@ -0,0 +1,32 @@
# go-proxyproto
[![Build Status](https://travis-ci.org/pires/go-proxyproto.svg?branch=master)](https://travis-ci.org/pires/go-proxyproto)
[![Coverage Status](https://coveralls.io/repos/github/pires/go-proxyproto/badge.svg?branch=master)](https://coveralls.io/github/pires/go-proxyproto?branch=master)
[![Go Report Card](https://goreportcard.com/badge/github.com/pires/go-proxyproto)](https://goreportcard.com/report/github.com/pires/go-proxyproto)
A Go library implementation of the [PROXY protocol, versions 1 and 2](http://www.haproxy.org/download/1.5/doc/proxy-protocol.txt),
which provides, as per specification:
> (...) a convenient way to safely transport connection
> information such as a client's address across multiple layers of NAT or TCP
> proxies. It is designed to require little changes to existing components and
> to limit the performance impact caused by the processing of the transported
> information.
This library is to be used in one of or both proxy clients and proxy servers that need to support said protocol.
Both protocol versions, 1 (text-based) and 2 (binary-based) are supported.
## Installation
```shell
$ go get -u github.com/pires/go-proxyproto
```
## Usage
### Client (TODO)
### Server (TODO)
## Documentation
[http://godoc.org/github.com/pires/go-proxyproto](http://godoc.org/github.com/pires/go-proxyproto)

71
vendor/github.com/pires/go-proxyproto/addr_proto.go generated vendored Normal file
View File

@ -0,0 +1,71 @@
package proxyproto
// AddressFamilyAndProtocol represents address family and transport protocol.
type AddressFamilyAndProtocol byte
const (
UNSPEC = '\x00'
TCPv4 = '\x11'
UDPv4 = '\x12'
TCPv6 = '\x21'
UDPv6 = '\x22'
UnixStream = '\x31'
UnixDatagram = '\x32'
)
var supportedTransportProtocol = map[AddressFamilyAndProtocol]bool{
TCPv4: true,
UDPv4: true,
TCPv6: true,
UDPv6: true,
UnixStream: true,
UnixDatagram: true,
}
// IsIPv4 returns true if the address family is IPv4 (AF_INET4), false otherwise.
func (ap AddressFamilyAndProtocol) IsIPv4() bool {
return 0x10 == ap&0xF0
}
// IsIPv6 returns true if the address family is IPv6 (AF_INET6), false otherwise.
func (ap AddressFamilyAndProtocol) IsIPv6() bool {
return 0x20 == ap&0xF0
}
// IsUnix returns true if the address family is UNIX (AF_UNIX), false otherwise.
func (ap AddressFamilyAndProtocol) IsUnix() bool {
return 0x30 == ap&0xF0
}
// IsStream returns true if the transport protocol is TCP or STREAM (SOCK_STREAM), false otherwise.
func (ap AddressFamilyAndProtocol) IsStream() bool {
return 0x01 == ap&0x0F
}
// IsDatagram returns true if the transport protocol is UDP or DGRAM (SOCK_DGRAM), false otherwise.
func (ap AddressFamilyAndProtocol) IsDatagram() bool {
return 0x02 == ap&0x0F
}
// IsUnspec returns true if the transport protocol or address family is unspecified, false otherwise.
func (ap AddressFamilyAndProtocol) IsUnspec() bool {
return (0x00 == ap&0xF0) || (0x00 == ap&0x0F)
}
func (ap AddressFamilyAndProtocol) toByte() byte {
if ap.IsIPv4() && ap.IsStream() {
return TCPv4
} else if ap.IsIPv4() && ap.IsDatagram() {
return UDPv4
} else if ap.IsIPv6() && ap.IsStream() {
return TCPv6
} else if ap.IsIPv6() && ap.IsDatagram() {
return UDPv6
} else if ap.IsUnix() && ap.IsStream() {
return UnixStream
} else if ap.IsUnix() && ap.IsDatagram() {
return UnixDatagram
}
return UNSPEC
}

116
vendor/github.com/pires/go-proxyproto/header.go generated vendored Normal file
View File

@ -0,0 +1,116 @@
// Package proxyproto implements Proxy Protocol (v1 and v2) parser and writer, as per specification:
// http://www.haproxy.org/download/1.5/doc/proxy-protocol.txt
package proxyproto
import (
"bufio"
"bytes"
"errors"
"io"
"net"
"time"
)
var (
// Protocol
SIGV1 = []byte{'\x50', '\x52', '\x4F', '\x58', '\x59'}
SIGV2 = []byte{'\x0D', '\x0A', '\x0D', '\x0A', '\x00', '\x0D', '\x0A', '\x51', '\x55', '\x49', '\x54', '\x0A'}
ErrCantReadProtocolVersionAndCommand = errors.New("Can't read proxy protocol version and command")
ErrCantReadAddressFamilyAndProtocol = errors.New("Can't read address family or protocol")
ErrCantReadLength = errors.New("Can't read length")
ErrCantResolveSourceUnixAddress = errors.New("Can't resolve source Unix address")
ErrCantResolveDestinationUnixAddress = errors.New("Can't resolve destination Unix address")
ErrNoProxyProtocol = errors.New("Proxy protocol signature not present")
ErrUnknownProxyProtocolVersion = errors.New("Unknown proxy protocol version")
ErrUnsupportedProtocolVersionAndCommand = errors.New("Unsupported proxy protocol version and command")
ErrUnsupportedAddressFamilyAndProtocol = errors.New("Unsupported address family and protocol")
ErrInvalidLength = errors.New("Invalid length")
ErrInvalidAddress = errors.New("Invalid address")
ErrInvalidPortNumber = errors.New("Invalid port number")
)
// Header is the placeholder for proxy protocol header.
type Header struct {
Version byte
Command ProtocolVersionAndCommand
TransportProtocol AddressFamilyAndProtocol
SourceAddress net.IP
DestinationAddress net.IP
SourcePort uint16
DestinationPort uint16
}
// EqualTo returns true if headers are equivalent, false otherwise.
func (header *Header) EqualTo(q *Header) bool {
if header == nil || q == nil {
return false
}
if header.Command.IsLocal() {
return true
}
return header.TransportProtocol == q.TransportProtocol &&
header.SourceAddress.String() == q.SourceAddress.String() &&
header.DestinationAddress.String() == q.DestinationAddress.String() &&
header.SourcePort == q.SourcePort &&
header.DestinationPort == q.DestinationPort
}
// WriteTo renders a proxy protocol header in a format to write over the wire.
func (header *Header) WriteTo(w io.Writer) (int64, error) {
switch header.Version {
case 1:
return header.writeVersion1(w)
case 2:
return header.writeVersion2(w)
default:
return 0, ErrUnknownProxyProtocolVersion
}
}
// Read identifies the proxy protocol version and reads the remaining of
// the header, accordingly.
//
// If proxy protocol header signature is not present, the reader buffer remains untouched
// and is safe for reading outside of this code.
//
// If proxy protocol header signature is present but an error is raised while processing
// the remaining header, assume the reader buffer to be in a corrupt state.
// Also, this operation will block until enough bytes are available for peeking.
func Read(reader *bufio.Reader) (*Header, error) {
// In order to improve speed for small non-PROXYed packets, take a peek at the first byte alone.
if b1, err := reader.Peek(1); err == nil && (bytes.Equal(b1[:1], SIGV1[:1]) || bytes.Equal(b1[:1], SIGV2[:1])) {
if signature, err := reader.Peek(5); err == nil && bytes.Equal(signature[:5], SIGV1) {
return parseVersion1(reader)
} else if signature, err := reader.Peek(12); err == nil && bytes.Equal(signature[:12], SIGV2) {
return parseVersion2(reader)
}
}
return nil, ErrNoProxyProtocol
}
// ReadTimeout acts as Read but takes a timeout. If that timeout is reached, it's assumed
// there's no proxy protocol header.
func ReadTimeout(reader *bufio.Reader, timeout time.Duration) (*Header, error) {
type header struct {
h *Header
e error
}
read := make(chan *header, 1)
go func() {
h := &header{}
h.h, h.e = Read(reader)
read <- h
}()
timer := time.NewTimer(timeout)
select {
case result := <-read:
timer.Stop()
return result.h, result.e
case <-timer.C:
return nil, ErrNoProxyProtocol
}
}

116
vendor/github.com/pires/go-proxyproto/v1.go generated vendored Normal file
View File

@ -0,0 +1,116 @@
package proxyproto
import (
"bufio"
"bytes"
"io"
"net"
"strconv"
"strings"
)
const (
CRLF = "\r\n"
SEPARATOR = " "
)
func initVersion1() *Header {
header := new(Header)
header.Version = 1
// Command doesn't exist in v1
header.Command = PROXY
return header
}
func parseVersion1(reader *bufio.Reader) (*Header, error) {
// Make sure we have a v1 header
line, err := reader.ReadString('\n')
if !strings.HasSuffix(line, CRLF) {
return nil, ErrCantReadProtocolVersionAndCommand
}
tokens := strings.Split(line[:len(line)-2], SEPARATOR)
if len(tokens) < 6 {
return nil, ErrCantReadProtocolVersionAndCommand
}
header := initVersion1()
// Read address family and protocol
switch tokens[1] {
case "TCP4":
header.TransportProtocol = TCPv4
case "TCP6":
header.TransportProtocol = TCPv6
default:
header.TransportProtocol = UNSPEC
}
// Read addresses and ports
header.SourceAddress, err = parseV1IPAddress(header.TransportProtocol, tokens[2])
if err != nil {
return nil, err
}
header.DestinationAddress, err = parseV1IPAddress(header.TransportProtocol, tokens[3])
if err != nil {
return nil, err
}
header.SourcePort, err = parseV1PortNumber(tokens[4])
if err != nil {
return nil, err
}
header.DestinationPort, err = parseV1PortNumber(tokens[5])
if err != nil {
return nil, err
}
return header, nil
}
func (header *Header) writeVersion1(w io.Writer) (int64, error) {
// As of version 1, only "TCP4" ( \x54 \x43 \x50 \x34 ) for TCP over IPv4,
// and "TCP6" ( \x54 \x43 \x50 \x36 ) for TCP over IPv6 are allowed.
proto := "UNKNOWN"
if header.TransportProtocol == TCPv4 {
proto = "TCP4"
} else if header.TransportProtocol == TCPv6 {
proto = "TCP6"
}
var buf bytes.Buffer
buf.Write(SIGV1)
buf.WriteString(SEPARATOR)
buf.WriteString(proto)
buf.WriteString(SEPARATOR)
buf.WriteString(header.SourceAddress.String())
buf.WriteString(SEPARATOR)
buf.WriteString(header.DestinationAddress.String())
buf.WriteString(SEPARATOR)
buf.WriteString(strconv.Itoa(int(header.SourcePort)))
buf.WriteString(SEPARATOR)
buf.WriteString(strconv.Itoa(int(header.DestinationPort)))
buf.WriteString(CRLF)
return buf.WriteTo(w)
}
func parseV1PortNumber(portStr string) (uint16, error) {
var port uint16
_port, err := strconv.Atoi(portStr)
if err == nil {
if port < 0 || port > 65535 {
err = ErrInvalidPortNumber
}
port = uint16(_port)
}
return port, err
}
func parseV1IPAddress(protocol AddressFamilyAndProtocol, addrStr string) (addr net.IP, err error) {
addr = net.ParseIP(addrStr)
tryV4 := addr.To4()
if (protocol == TCPv4 && tryV4 == nil) || (protocol == TCPv6 && tryV4 != nil) {
err = ErrInvalidAddress
}
return
}

202
vendor/github.com/pires/go-proxyproto/v2.go generated vendored Normal file
View File

@ -0,0 +1,202 @@
package proxyproto
import (
"bufio"
"bytes"
"encoding/binary"
"io"
)
var (
lengthV4 = uint16(12)
lengthV6 = uint16(36)
lengthUnix = uint16(218)
lengthV4Bytes = func() []byte {
a := make([]byte, 2)
binary.BigEndian.PutUint16(a, lengthV4)
return a
}()
lengthV6Bytes = func() []byte {
a := make([]byte, 2)
binary.BigEndian.PutUint16(a, lengthV6)
return a
}()
lengthUnixBytes = func() []byte {
a := make([]byte, 2)
binary.BigEndian.PutUint16(a, lengthUnix)
return a
}()
)
type _ports struct {
SrcPort uint16
DstPort uint16
}
type _addr4 struct {
Src [4]byte
Dst [4]byte
SrcPort uint16
DstPort uint16
}
type _addr6 struct {
Src [16]byte
Dst [16]byte
_ports
}
type _addrUnix struct {
Src [108]byte
Dst [108]byte
}
func parseVersion2(reader *bufio.Reader) (header *Header, err error) {
// Skip first 12 bytes (signature)
for i := 0; i < 12; i++ {
if _, err = reader.ReadByte(); err != nil {
return nil, ErrCantReadProtocolVersionAndCommand
}
}
header = new(Header)
header.Version = 2
// Read the 13th byte, protocol version and command
b13, err := reader.ReadByte()
if err != nil {
return nil, ErrCantReadProtocolVersionAndCommand
}
header.Command = ProtocolVersionAndCommand(b13)
if _, ok := supportedCommand[header.Command]; !ok {
return nil, ErrUnsupportedProtocolVersionAndCommand
}
// If command is LOCAL, header ends here
if header.Command.IsLocal() {
return header, nil
}
// Read the 14th byte, address family and protocol
b14, err := reader.ReadByte()
if err != nil {
return nil, ErrCantReadAddressFamilyAndProtocol
}
header.TransportProtocol = AddressFamilyAndProtocol(b14)
if _, ok := supportedTransportProtocol[header.TransportProtocol]; !ok {
return nil, ErrUnsupportedAddressFamilyAndProtocol
}
// Make sure there are bytes available as specified in length
var length uint16
if err := binary.Read(io.LimitReader(reader, 2), binary.BigEndian, &length); err != nil {
return nil, ErrCantReadLength
}
if !header.validateLength(length) {
return nil, ErrInvalidLength
}
if _, err := reader.Peek(int(length)); err != nil {
return nil, ErrInvalidLength
}
// Length-limited reader for payload section
payloadReader := io.LimitReader(reader, int64(length))
// Read addresses and ports
if header.TransportProtocol.IsIPv4() {
var addr _addr4
if err := binary.Read(payloadReader, binary.BigEndian, &addr); err != nil {
return nil, ErrInvalidAddress
}
header.SourceAddress = addr.Src[:]
header.DestinationAddress = addr.Dst[:]
header.SourcePort = addr.SrcPort
header.DestinationPort = addr.DstPort
} else if header.TransportProtocol.IsIPv6() {
var addr _addr6
if err := binary.Read(payloadReader, binary.BigEndian, &addr); err != nil {
return nil, ErrInvalidAddress
}
header.SourceAddress = addr.Src[:]
header.DestinationAddress = addr.Dst[:]
header.SourcePort = addr.SrcPort
header.DestinationPort = addr.DstPort
}
// TODO fully support Unix addresses
// else if header.TransportProtocol.IsUnix() {
// var addr _addrUnix
// if err := binary.Read(payloadReader, binary.BigEndian, &addr); err != nil {
// return nil, ErrInvalidAddress
// }
//
//if header.SourceAddress, err = net.ResolveUnixAddr("unix", string(addr.Src[:])); err != nil {
// return nil, ErrCantResolveSourceUnixAddress
//}
//if header.DestinationAddress, err = net.ResolveUnixAddr("unix", string(addr.Dst[:])); err != nil {
// return nil, ErrCantResolveDestinationUnixAddress
//}
//}
// TODO add encapsulated TLV support
// Drain the remaining padding
payloadReader.Read(make([]byte, length))
return header, nil
}
func (header *Header) writeVersion2(w io.Writer) (int64, error) {
var buf bytes.Buffer
buf.Write(SIGV2)
buf.WriteByte(header.Command.toByte())
if !header.Command.IsLocal() {
buf.WriteByte(header.TransportProtocol.toByte())
// TODO add encapsulated TLV length
var addrSrc, addrDst []byte
if header.TransportProtocol.IsIPv4() {
buf.Write(lengthV4Bytes)
addrSrc = header.SourceAddress.To4()
addrDst = header.DestinationAddress.To4()
} else if header.TransportProtocol.IsIPv6() {
buf.Write(lengthV6Bytes)
addrSrc = header.SourceAddress.To16()
addrDst = header.DestinationAddress.To16()
} else if header.TransportProtocol.IsUnix() {
buf.Write(lengthUnixBytes)
// TODO is below right?
addrSrc = []byte(header.SourceAddress.String())
addrDst = []byte(header.DestinationAddress.String())
}
buf.Write(addrSrc)
buf.Write(addrDst)
portSrcBytes := func() []byte {
a := make([]byte, 2)
binary.BigEndian.PutUint16(a, header.SourcePort)
return a
}()
buf.Write(portSrcBytes)
portDstBytes := func() []byte {
a := make([]byte, 2)
binary.BigEndian.PutUint16(a, header.DestinationPort)
return a
}()
buf.Write(portDstBytes)
}
return buf.WriteTo(w)
}
func (header *Header) validateLength(length uint16) bool {
if header.TransportProtocol.IsIPv4() {
return length >= lengthV4
} else if header.TransportProtocol.IsIPv6() {
return length >= lengthV6
} else if header.TransportProtocol.IsUnix() {
return length >= lengthUnix
}
return false
}

39
vendor/github.com/pires/go-proxyproto/version_cmd.go generated vendored Normal file
View File

@ -0,0 +1,39 @@
package proxyproto
// ProtocolVersionAndCommand represents proxy protocol version and command.
type ProtocolVersionAndCommand byte
const (
LOCAL = '\x20'
PROXY = '\x21'
)
var supportedCommand = map[ProtocolVersionAndCommand]bool{
LOCAL: true,
PROXY: true,
}
// IsLocal returns true if the protocol version is \x2 and command is LOCAL, false otherwise.
func (pvc ProtocolVersionAndCommand) IsLocal() bool {
return 0x20 == pvc&0xF0 && 0x00 == pvc&0x0F
}
// IsProxy returns true if the protocol version is \x2 and command is PROXY, false otherwise.
func (pvc ProtocolVersionAndCommand) IsProxy() bool {
return 0x20 == pvc&0xF0 && 0x01 == pvc&0x0F
}
// IsUnspec returns true if the protocol version or command is unspecified, false otherwise.
func (pvc ProtocolVersionAndCommand) IsUnspec() bool {
return !(pvc.IsLocal() || pvc.IsProxy())
}
func (pvc ProtocolVersionAndCommand) toByte() byte {
if pvc.IsLocal() {
return LOCAL
} else if pvc.IsProxy() {
return PROXY
}
return LOCAL
}

2
vendor/modules.txt vendored
View File

@ -31,6 +31,8 @@ github.com/inconshreveable/mousetrap
github.com/klauspost/cpuid
# github.com/klauspost/reedsolomon v1.9.1
github.com/klauspost/reedsolomon
# github.com/pires/go-proxyproto v0.0.0-20190111085350-4d51b51e3bfc
github.com/pires/go-proxyproto
# github.com/pkg/errors v0.8.0
github.com/pkg/errors
# github.com/pmezard/go-difflib v1.0.0