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util.go
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util.go
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package util
import (
"encoding/base64"
"encoding/json"
"errors"
"fmt"
"io"
"io/ioutil"
"net"
"net/http"
"net/url"
"strings"
"time"
"github.com/fatedier/frp/client"
frpNet "github.com/fatedier/frp/utils/net"
)
func GetProxyStatus(statusAddr string, user string, passwd string, name string) (status *client.ProxyStatusResp, err error) {
req, err := http.NewRequest("GET", "http://"+statusAddr+"/api/status", nil)
if err != nil {
return status, err
}
authStr := "Basic " + base64.StdEncoding.EncodeToString([]byte(user+":"+passwd))
req.Header.Add("Authorization", authStr)
resp, err := http.DefaultClient.Do(req)
if err != nil {
return status, err
} else {
if resp.StatusCode != 200 {
return status, fmt.Errorf("admin api status code [%d]", resp.StatusCode)
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return status, err
}
allStatus := &client.StatusResp{}
err = json.Unmarshal(body, &allStatus)
if err != nil {
return status, fmt.Errorf("unmarshal http response error: %s", strings.TrimSpace(string(body)))
}
for _, s := range allStatus.Tcp {
if s.Name == name {
return &s, nil
}
}
for _, s := range allStatus.Udp {
if s.Name == name {
return &s, nil
}
}
for _, s := range allStatus.Http {
if s.Name == name {
return &s, nil
}
}
for _, s := range allStatus.Https {
if s.Name == name {
return &s, nil
}
}
for _, s := range allStatus.Stcp {
if s.Name == name {
return &s, nil
}
}
for _, s := range allStatus.Xtcp {
if s.Name == name {
return &s, nil
}
}
}
return status, errors.New("no proxy status found")
}
func ReloadConf(reloadAddr string, user string, passwd string) error {
req, err := http.NewRequest("GET", "http://"+reloadAddr+"/api/reload", nil)
if err != nil {
return err
}
authStr := "Basic " + base64.StdEncoding.EncodeToString([]byte(user+":"+passwd))
req.Header.Add("Authorization", authStr)
resp, err := http.DefaultClient.Do(req)
if err != nil {
return err
} else {
if resp.StatusCode != 200 {
return fmt.Errorf("admin api status code [%d]", resp.StatusCode)
}
defer resp.Body.Close()
io.Copy(ioutil.Discard, resp.Body)
}
return nil
}
func SendTcpMsg(addr string, msg string) (res string, err error) {
c, err := frpNet.ConnectTcpServer(addr)
if err != nil {
err = fmt.Errorf("connect to tcp server error: %v", err)
return
}
defer c.Close()
return SendTcpMsgByConn(c, msg)
}
func SendTcpMsgByConn(c net.Conn, msg string) (res string, err error) {
timer := time.Now().Add(5 * time.Second)
c.SetDeadline(timer)
c.Write([]byte(msg))
buf := make([]byte, 2048)
n, errRet := c.Read(buf)
if errRet != nil {
err = fmt.Errorf("read from tcp server error: %v", errRet)
return
}
return string(buf[:n]), nil
}
func SendUdpMsg(addr string, msg string) (res string, err error) {
udpAddr, errRet := net.ResolveUDPAddr("udp", addr)
if errRet != nil {
err = fmt.Errorf("resolve udp addr error: %v", err)
return
}
conn, errRet := net.DialUDP("udp", nil, udpAddr)
if errRet != nil {
err = fmt.Errorf("dial udp server error: %v", err)
return
}
defer conn.Close()
_, err = conn.Write([]byte(msg))
if err != nil {
err = fmt.Errorf("write to udp server error: %v", err)
return
}
buf := make([]byte, 2048)
n, errRet := conn.Read(buf)
if errRet != nil {
err = fmt.Errorf("read from udp server error: %v", err)
return
}
return string(buf[:n]), nil
}
func SendHttpMsg(method, urlStr string, host string, headers map[string]string, proxy string) (code int, body string, header http.Header, err error) {
req, errRet := http.NewRequest(method, urlStr, nil)
if errRet != nil {
err = errRet
return
}
if host != "" {
req.Host = host
}
for k, v := range headers {
req.Header.Set(k, v)
}
tr := &http.Transport{
DialContext: (&net.Dialer{
Timeout: 30 * time.Second,
KeepAlive: 30 * time.Second,
DualStack: true,
}).DialContext,
MaxIdleConns: 100,
IdleConnTimeout: 90 * time.Second,
TLSHandshakeTimeout: 10 * time.Second,
ExpectContinueTimeout: 1 * time.Second,
}
if len(proxy) != 0 {
tr.Proxy = func(req *http.Request) (*url.URL, error) {
return url.Parse(proxy)
}
}
client := http.Client{
Transport: tr,
}
resp, errRet := client.Do(req)
if errRet != nil {
err = errRet
return
}
code = resp.StatusCode
header = resp.Header
buf, errRet := ioutil.ReadAll(resp.Body)
if errRet != nil {
err = errRet
return
}
body = string(buf)
return
}
func BasicAuth(username, passwd string) string {
auth := username + ":" + passwd
return "Basic " + base64.StdEncoding.EncodeToString([]byte(auth))
}