137 lines
3.2 KiB
Go
137 lines
3.2 KiB
Go
package route
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import (
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"context"
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"fmt"
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"net/http"
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"net/url"
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"strconv"
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"time"
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A "github.com/Dreamacro/clash/adapters/outbound"
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C "github.com/Dreamacro/clash/constant"
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T "github.com/Dreamacro/clash/tunnel"
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"github.com/go-chi/chi"
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"github.com/go-chi/render"
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)
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func proxyRouter() http.Handler {
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r := chi.NewRouter()
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r.Get("/", getProxies)
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r.Route("/{name}", func(r chi.Router) {
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r.Use(parseProxyName, findProxyByName)
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r.Get("/", getProxy)
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r.Get("/delay", getProxyDelay)
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r.Put("/", updateProxy)
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})
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return r
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}
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// When name is composed of a partial escape string, Golang does not unescape it
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func parseProxyName(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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name := chi.URLParam(r, "name")
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if newName, err := url.PathUnescape(name); err == nil {
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name = newName
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}
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ctx := context.WithValue(r.Context(), CtxKeyProxyName, name)
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next.ServeHTTP(w, r.WithContext(ctx))
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})
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}
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func findProxyByName(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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name := r.Context().Value(CtxKeyProxyName).(string)
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proxies := T.Instance().Proxies()
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proxy, exist := proxies[name]
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if !exist {
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w.WriteHeader(http.StatusNotFound)
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render.Respond(w, r, ErrNotFound)
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return
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}
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ctx := context.WithValue(r.Context(), CtxKeyProxy, proxy)
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next.ServeHTTP(w, r.WithContext(ctx))
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})
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}
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func getProxies(w http.ResponseWriter, r *http.Request) {
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proxies := T.Instance().Proxies()
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render.Respond(w, r, map[string]map[string]C.Proxy{
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"proxies": proxies,
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})
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}
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func getProxy(w http.ResponseWriter, r *http.Request) {
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proxy := r.Context().Value(CtxKeyProxy).(C.Proxy)
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render.Respond(w, r, proxy)
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}
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type UpdateProxyRequest struct {
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Name string `json:"name"`
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}
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func updateProxy(w http.ResponseWriter, r *http.Request) {
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req := UpdateProxyRequest{}
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if err := render.DecodeJSON(r.Body, &req); err != nil {
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w.WriteHeader(http.StatusBadRequest)
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render.Respond(w, r, ErrBadRequest)
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return
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}
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proxy := r.Context().Value(CtxKeyProxy).(C.Proxy)
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selector, ok := proxy.(*A.Selector)
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if !ok {
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w.WriteHeader(http.StatusBadRequest)
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render.Respond(w, r, ErrBadRequest)
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return
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}
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if err := selector.Set(req.Name); err != nil {
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w.WriteHeader(http.StatusBadRequest)
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render.Respond(w, r, newError(fmt.Sprintf("Selector update error: %s", err.Error())))
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return
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}
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w.WriteHeader(http.StatusNoContent)
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}
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func getProxyDelay(w http.ResponseWriter, r *http.Request) {
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query := r.URL.Query()
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url := query.Get("url")
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timeout, err := strconv.ParseInt(query.Get("timeout"), 10, 16)
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if err != nil {
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w.WriteHeader(http.StatusBadRequest)
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render.Respond(w, r, ErrBadRequest)
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return
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}
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proxy := r.Context().Value(CtxKeyProxy).(C.Proxy)
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sigCh := make(chan int16)
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go func() {
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t, err := A.DelayTest(proxy, url)
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if err != nil {
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sigCh <- 0
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}
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sigCh <- t
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}()
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select {
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case <-time.After(time.Millisecond * time.Duration(timeout)):
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w.WriteHeader(http.StatusRequestTimeout)
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render.Respond(w, r, ErrRequestTimeout)
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case t := <-sigCh:
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if t == 0 {
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w.WriteHeader(http.StatusServiceUnavailable)
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render.Respond(w, r, newError("An error occurred in the delay test"))
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} else {
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render.Respond(w, r, map[string]int16{
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"delay": t,
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})
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}
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}
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}
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