mirror of https://gitee.com/godoos/godoos.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
242 lines
6.0 KiB
242 lines
6.0 KiB
package proxy
|
|
|
|
import (
|
|
"encoding/json"
|
|
"fmt"
|
|
"godo/model"
|
|
"net"
|
|
"net/http"
|
|
"net/http/httputil"
|
|
"net/url"
|
|
"strconv"
|
|
)
|
|
|
|
// 创建 LocalProxy 的 HTTP 处理函数
|
|
func CreateLocalProxyHandler(w http.ResponseWriter, r *http.Request) {
|
|
|
|
var lp model.LocalProxy
|
|
err := json.NewDecoder(r.Body).Decode(&lp)
|
|
if err != nil {
|
|
http.Error(w, err.Error(), http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
err = model.Db.Create(&lp).Error
|
|
if err != nil {
|
|
http.Error(w, err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
w.WriteHeader(http.StatusCreated)
|
|
json.NewEncoder(w).Encode(lp)
|
|
|
|
}
|
|
|
|
// GetLocalProxiesHandler 获取所有 LocalProxy 的 HTTP 处理函数
|
|
func GetLocalProxiesHandler(w http.ResponseWriter, r *http.Request) {
|
|
if r.Method != http.MethodGet {
|
|
http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
|
|
return
|
|
}
|
|
|
|
// 获取查询参数 page 和 limit
|
|
pageStr := r.URL.Query().Get("page")
|
|
limitStr := r.URL.Query().Get("limit")
|
|
|
|
page, err := strconv.Atoi(pageStr)
|
|
if err != nil || page < 1 {
|
|
page = 1
|
|
}
|
|
|
|
limit, err := strconv.Atoi(limitStr)
|
|
if err != nil || limit < 1 {
|
|
limit = 10
|
|
}
|
|
|
|
// 定义响应结构体
|
|
type ProxyResponse struct {
|
|
Proxies []model.LocalProxy `json:"proxies"`
|
|
Total int64 `json:"total"`
|
|
}
|
|
|
|
// 修改处理函数
|
|
proxies, total, err := model.GetLocalProxies(page, limit)
|
|
if err != nil {
|
|
http.Error(w, err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
w.Header().Set("Content-Type", "application/json")
|
|
response := ProxyResponse{
|
|
Proxies: proxies,
|
|
Total: total,
|
|
}
|
|
if err := json.NewEncoder(w).Encode(response); err != nil {
|
|
http.Error(w, "Failed to encode response", http.StatusInternalServerError)
|
|
return
|
|
}
|
|
}
|
|
|
|
// GetLocalProxyHandler 获取单个 LocalProxy 的 HTTP 处理函数
|
|
func GetLocalProxyHandler(w http.ResponseWriter, r *http.Request) {
|
|
idStr := r.URL.Query().Get("id")
|
|
id, err := strconv.Atoi(idStr)
|
|
if err != nil {
|
|
http.Error(w, "Invalid ID", http.StatusBadRequest)
|
|
return
|
|
}
|
|
var proxy model.LocalProxy
|
|
err = model.Db.First(&proxy, uint(id)).Error
|
|
if err != nil {
|
|
http.Error(w, err.Error(), http.StatusNotFound)
|
|
return
|
|
}
|
|
|
|
w.Header().Set("Content-Type", "application/json")
|
|
json.NewEncoder(w).Encode(proxy)
|
|
}
|
|
|
|
// UpdateLocalProxyHandler 更新 LocalProxy 的 HTTP 处理函数
|
|
func UpdateLocalProxyHandler(w http.ResponseWriter, r *http.Request) {
|
|
|
|
var lp model.LocalProxy
|
|
err := json.NewDecoder(r.Body).Decode(&lp)
|
|
if err != nil {
|
|
http.Error(w, err.Error(), http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
err = model.Db.Model(&model.LocalProxy{}).Where("id = ?", lp.ID).Updates(lp).Error
|
|
if err != nil {
|
|
http.Error(w, err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
w.WriteHeader(http.StatusOK)
|
|
json.NewEncoder(w).Encode(lp)
|
|
}
|
|
|
|
// DeleteLocalProxyHandler 删除 LocalProxy 的 HTTP 处理函数
|
|
func DeleteLocalProxyHandler(w http.ResponseWriter, r *http.Request) {
|
|
idStr := r.URL.Query().Get("id")
|
|
id, err := strconv.Atoi(idStr)
|
|
if err != nil {
|
|
http.Error(w, "Invalid ID", http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
err = model.Db.Delete(&model.LocalProxy{}, uint(id)).Error
|
|
if err != nil {
|
|
http.Error(w, err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
w.WriteHeader(http.StatusNoContent)
|
|
}
|
|
|
|
// 初始化代理处理函数
|
|
func InitProxyHandlers() {
|
|
proxies, _, err := model.GetLocalProxies(1, 1000) // 获取所有代理配置
|
|
if err != nil {
|
|
fmt.Println("Failed to get local proxies:", err)
|
|
return
|
|
}
|
|
|
|
for _, proxy := range proxies {
|
|
switch proxy.ProxyType {
|
|
case "http":
|
|
go func(p model.LocalProxy) {
|
|
httpProxyHandler(p)
|
|
}(proxy)
|
|
case "udp":
|
|
// UDP 转发的处理逻辑
|
|
go func(p model.LocalProxy) {
|
|
udpProxyHandler(p)
|
|
}(proxy)
|
|
case "file":
|
|
http.Handle(fmt.Sprintf("/file/%d/", proxy.Port), http.StripPrefix(fmt.Sprintf("/file/%d/", proxy.Port), http.FileServer(http.Dir(proxy.Domain))))
|
|
fmt.Printf("Setting up file server for port %d at %s\n", proxy.Port, proxy.Domain)
|
|
default:
|
|
fmt.Printf("Unknown proxy type: %s\n", proxy.ProxyType)
|
|
}
|
|
}
|
|
}
|
|
|
|
// HTTP 代理处理函数
|
|
func httpProxyHandler(proxy model.LocalProxy) {
|
|
remote, err := url.Parse(proxy.Domain)
|
|
if err != nil {
|
|
fmt.Printf("Failed to parse remote URL for port %d: %v\n", proxy.Port, err)
|
|
return
|
|
}
|
|
|
|
reverseProxy := httputil.NewSingleHostReverseProxy(remote)
|
|
|
|
// 启动 HTTP 服务器并监听指定端口
|
|
server := &http.Server{
|
|
Addr: fmt.Sprintf(":%d", proxy.Port),
|
|
Handler: reverseProxy,
|
|
}
|
|
|
|
fmt.Printf("Starting HTTP proxy on port %d and forwarding to %s:%d\n", proxy.Port, proxy.Domain, proxy.Port)
|
|
if err := server.ListenAndServe(); err != nil {
|
|
fmt.Printf("Failed to start HTTP proxy on port %d: %v\n", proxy.Port, err)
|
|
}
|
|
}
|
|
|
|
// UDP 代理处理函数
|
|
func udpProxyHandler(proxy model.LocalProxy) {
|
|
|
|
localAddr, err := net.ResolveUDPAddr("udp", fmt.Sprintf(":%d", proxy.Port))
|
|
if err != nil {
|
|
fmt.Printf("Failed to resolve local UDP address for port %d: %v\n", proxy.Port, err)
|
|
return
|
|
}
|
|
|
|
remoteAddr, err := net.ResolveUDPAddr("udp", proxy.Domain)
|
|
if err != nil {
|
|
fmt.Printf("Failed to resolve remote UDP address for port %d: %v\n", proxy.Port, err)
|
|
return
|
|
}
|
|
|
|
conn, err := net.ListenUDP("udp", localAddr)
|
|
if err != nil {
|
|
fmt.Printf("Failed to listen on UDP port %d: %v\n", proxy.Port, err)
|
|
return
|
|
}
|
|
defer conn.Close()
|
|
|
|
buffer := make([]byte, 1024)
|
|
for {
|
|
n, addr, err := conn.ReadFromUDP(buffer)
|
|
if err != nil {
|
|
fmt.Printf("Failed to read from UDP: %v\n", err)
|
|
continue
|
|
}
|
|
|
|
remoteConn, err := net.DialUDP("udp", nil, remoteAddr)
|
|
if err != nil {
|
|
fmt.Printf("Failed to dial remote UDP: %v\n", err)
|
|
continue
|
|
}
|
|
|
|
_, err = remoteConn.Write(buffer[:n])
|
|
if err != nil {
|
|
fmt.Printf("Failed to write to remote UDP: %v\n", err)
|
|
continue
|
|
}
|
|
|
|
// 读取远程服务器的响应并转发回客户端
|
|
n, err = remoteConn.Read(buffer)
|
|
if err != nil {
|
|
fmt.Printf("Failed to read from remote UDP: %v\n", err)
|
|
continue
|
|
}
|
|
|
|
_, err = conn.WriteToUDP(buffer[:n], addr)
|
|
if err != nil {
|
|
fmt.Printf("Failed to write to client UDP: %v\n", err)
|
|
continue
|
|
}
|
|
}
|
|
}
|
|
|