clash/hub/route/proxies.go
2022-05-24 10:17:44 +08:00

138 lines
3.4 KiB
Go

package route
import (
"context"
"fmt"
"net/http"
"strconv"
"time"
"github.com/Dreamacro/clash/adapter"
"github.com/Dreamacro/clash/adapter/outboundgroup"
"github.com/Dreamacro/clash/component/profile/cachefile"
C "github.com/Dreamacro/clash/constant"
"github.com/Dreamacro/clash/tunnel"
"github.com/go-chi/chi/v5"
"github.com/go-chi/render"
)
var (
SwitchProxiesCallback func(sGroup string, sProxy string)
)
func proxyRouter() http.Handler {
r := chi.NewRouter()
r.Get("/", getProxies)
r.Route("/{name}", func(r chi.Router) {
r.Use(parseProxyName, findProxyByName)
r.Get("/", getProxy)
r.Get("/delay", getProxyDelay)
r.Put("/", updateProxy)
})
return r
}
func parseProxyName(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
name := getEscapeParam(r, "name")
ctx := context.WithValue(r.Context(), CtxKeyProxyName, name)
next.ServeHTTP(w, r.WithContext(ctx))
})
}
func findProxyByName(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
name := r.Context().Value(CtxKeyProxyName).(string)
proxies := tunnel.Proxies()
proxy, exist := proxies[name]
if !exist {
render.Status(r, http.StatusNotFound)
render.JSON(w, r, ErrNotFound)
return
}
ctx := context.WithValue(r.Context(), CtxKeyProxy, proxy)
next.ServeHTTP(w, r.WithContext(ctx))
})
}
func getProxies(w http.ResponseWriter, r *http.Request) {
proxies := tunnel.Proxies()
render.JSON(w, r, render.M{
"proxies": proxies,
})
}
func getProxy(w http.ResponseWriter, r *http.Request) {
proxy := r.Context().Value(CtxKeyProxy).(C.Proxy)
render.JSON(w, r, proxy)
}
type UpdateProxyRequest struct {
Name string `json:"name"`
}
func updateProxy(w http.ResponseWriter, r *http.Request) {
req := UpdateProxyRequest{}
if err := render.DecodeJSON(r.Body, &req); err != nil {
render.Status(r, http.StatusBadRequest)
render.JSON(w, r, ErrBadRequest)
return
}
proxy := r.Context().Value(CtxKeyProxy).(*adapter.Proxy)
selector, ok := proxy.ProxyAdapter.(outboundgroup.SelectAble)
if !ok {
render.Status(r, http.StatusBadRequest)
render.JSON(w, r, newError("Must be a Selector"))
return
}
if err := selector.Set(req.Name); err != nil {
render.Status(r, http.StatusBadRequest)
render.JSON(w, r, newError(fmt.Sprintf("Selector update error: %s", err.Error())))
return
}
cachefile.Cache().SetSelected(proxy.Name(), req.Name)
if SwitchProxiesCallback != nil {
// refresh tray menu
go SwitchProxiesCallback(proxy.Name(), req.Name)
}
render.NoContent(w, r)
}
func getProxyDelay(w http.ResponseWriter, r *http.Request) {
query := r.URL.Query()
url := query.Get("url")
timeout, err := strconv.ParseInt(query.Get("timeout"), 10, 16)
if err != nil {
render.Status(r, http.StatusBadRequest)
render.JSON(w, r, ErrBadRequest)
return
}
proxy := r.Context().Value(CtxKeyProxy).(C.Proxy)
ctx, cancel := context.WithTimeout(context.Background(), time.Millisecond*time.Duration(timeout))
defer cancel()
delay, err := proxy.URLTest(ctx, url)
if ctx.Err() != nil {
render.Status(r, http.StatusGatewayTimeout)
render.JSON(w, r, ErrRequestTimeout)
return
}
if err != nil || delay == 0 {
render.Status(r, http.StatusServiceUnavailable)
render.JSON(w, r, newError("An error occurred in the delay test"))
return
}
render.JSON(w, r, render.M{
"delay": delay,
})
}