frp/client/admin_api.go

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// Copyright 2017 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 client
import (
"encoding/json"
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"fmt"
"io"
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"net"
"net/http"
"os"
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"sort"
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"strconv"
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"strings"
"github.com/samber/lo"
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"github.com/fatedier/frp/client/proxy"
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"github.com/fatedier/frp/pkg/config"
"github.com/fatedier/frp/pkg/util/log"
)
type GeneralResponse struct {
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Code int
Msg string
}
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// /healthz
func (svr *Service) healthz(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(200)
}
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// GET api/reload
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func (svr *Service) apiReload(w http.ResponseWriter, r *http.Request) {
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res := GeneralResponse{Code: 200}
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log.Info("api request [/api/reload]")
defer func() {
log.Info("api response [/api/reload], code [%d]", res.Code)
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w.WriteHeader(res.Code)
if len(res.Msg) > 0 {
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_, _ = w.Write([]byte(res.Msg))
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}
}()
_, pxyCfgs, visitorCfgs, err := config.ParseClientConfig(svr.cfgFile)
if err != nil {
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res.Code = 400
res.Msg = err.Error()
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log.Warn("reload frpc proxy config error: %s", res.Msg)
return
}
if err = svr.ReloadConf(pxyCfgs, visitorCfgs); err != nil {
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res.Code = 500
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res.Msg = err.Error()
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log.Warn("reload frpc proxy config error: %s", res.Msg)
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return
}
log.Info("success reload conf")
}
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type StatusResp map[string][]ProxyStatusResp
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type ProxyStatusResp struct {
Name string `json:"name"`
Type string `json:"type"`
Status string `json:"status"`
Err string `json:"err"`
LocalAddr string `json:"local_addr"`
Plugin string `json:"plugin"`
RemoteAddr string `json:"remote_addr"`
}
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func NewProxyStatusResp(status *proxy.WorkingStatus, serverAddr string) ProxyStatusResp {
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psr := ProxyStatusResp{
Name: status.Name,
Type: status.Type,
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Status: status.Phase,
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Err: status.Err,
}
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baseCfg := status.Cfg.GetBaseConfig()
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if baseCfg.LocalPort != 0 {
psr.LocalAddr = net.JoinHostPort(baseCfg.LocalIP, strconv.Itoa(baseCfg.LocalPort))
}
psr.Plugin = baseCfg.Plugin
if status.Err == "" {
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psr.RemoteAddr = status.RemoteAddr
if lo.Contains([]string{"tcp", "udp"}, status.Type) {
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psr.RemoteAddr = serverAddr + psr.RemoteAddr
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}
}
return psr
}
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// GET api/status
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func (svr *Service) apiStatus(w http.ResponseWriter, r *http.Request) {
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var (
buf []byte
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res StatusResp = make(map[string][]ProxyStatusResp)
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)
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log.Info("Http request [/api/status]")
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defer func() {
log.Info("Http response [/api/status]")
buf, _ = json.Marshal(&res)
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_, _ = w.Write(buf)
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}()
ps := svr.ctl.pm.GetAllProxyStatus()
for _, status := range ps {
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res[status.Type] = append(res[status.Type], NewProxyStatusResp(status, svr.cfg.ServerAddr))
}
for _, arrs := range res {
if len(arrs) <= 1 {
continue
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}
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sort.Slice(arrs, func(i, j int) bool {
return strings.Compare(arrs[i].Name, arrs[j].Name) < 0
})
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}
}
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// GET api/config
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func (svr *Service) apiGetConfig(w http.ResponseWriter, r *http.Request) {
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res := GeneralResponse{Code: 200}
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log.Info("Http get request [/api/config]")
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defer func() {
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log.Info("Http get response [/api/config], code [%d]", res.Code)
w.WriteHeader(res.Code)
if len(res.Msg) > 0 {
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_, _ = w.Write([]byte(res.Msg))
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}
}()
if svr.cfgFile == "" {
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res.Code = 400
res.Msg = "frpc has no config file path"
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log.Warn("%s", res.Msg)
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return
}
content, err := config.GetRenderedConfFromFile(svr.cfgFile)
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if err != nil {
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res.Code = 400
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res.Msg = err.Error()
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log.Warn("load frpc config file error: %s", res.Msg)
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return
}
rows := strings.Split(string(content), "\n")
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newRows := make([]string, 0, len(rows))
for _, row := range rows {
row = strings.TrimSpace(row)
if strings.HasPrefix(row, "token") {
continue
}
newRows = append(newRows, row)
}
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res.Msg = strings.Join(newRows, "\n")
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}
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// PUT api/config
func (svr *Service) apiPutConfig(w http.ResponseWriter, r *http.Request) {
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res := GeneralResponse{Code: 200}
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log.Info("Http put request [/api/config]")
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defer func() {
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log.Info("Http put response [/api/config], code [%d]", res.Code)
w.WriteHeader(res.Code)
if len(res.Msg) > 0 {
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_, _ = w.Write([]byte(res.Msg))
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}
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}()
// get new config content
body, err := io.ReadAll(r.Body)
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if err != nil {
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res.Code = 400
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res.Msg = fmt.Sprintf("read request body error: %v", err)
log.Warn("%s", res.Msg)
return
}
if len(body) == 0 {
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res.Code = 400
res.Msg = "body can't be empty"
log.Warn("%s", res.Msg)
return
}
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// get token from origin content
token := ""
b, err := os.ReadFile(svr.cfgFile)
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if err != nil {
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res.Code = 400
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res.Msg = err.Error()
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log.Warn("load frpc config file error: %s", res.Msg)
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return
}
content := string(b)
for _, row := range strings.Split(content, "\n") {
row = strings.TrimSpace(row)
if strings.HasPrefix(row, "token") {
token = row
break
}
}
tmpRows := make([]string, 0)
for _, row := range strings.Split(string(body), "\n") {
row = strings.TrimSpace(row)
if strings.HasPrefix(row, "token") {
continue
}
tmpRows = append(tmpRows, row)
}
newRows := make([]string, 0)
if token != "" {
for _, row := range tmpRows {
newRows = append(newRows, row)
if strings.HasPrefix(row, "[common]") {
newRows = append(newRows, token)
}
}
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} else {
newRows = tmpRows
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}
content = strings.Join(newRows, "\n")
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err = os.WriteFile(svr.cfgFile, []byte(content), 0o644)
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if err != nil {
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res.Code = 500
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res.Msg = fmt.Sprintf("write content to frpc config file error: %v", err)
log.Warn("%s", res.Msg)
return
}
}