From 137415cb5062ae3b5ce4ba8056754c1fc4febcaf Mon Sep 17 00:00:00 2001
From: Runxi Yu <me@runxiyu.org>
Date: Sun, 23 Mar 2025 12:04:27 +0800
Subject: Separate proxy stuff

---
 main.go | 49 -------------------------------------------------
 1 file changed, 49 deletions(-)

(limited to 'main.go')

diff --git a/main.go b/main.go
index 10794ab..2b6bc77 100644
--- a/main.go
+++ b/main.go
@@ -1,30 +1,15 @@
 package main
 
 import (
-	"crypto/hmac"
 	"crypto/sha256"
 	"crypto/subtle"
 	"encoding/base64"
-	"encoding/binary"
 	"errors"
 	"log"
 	"net/http"
-	"net/http/httputil"
-	"net/url"
 	"strings"
-	"time"
 )
 
-var reverseProxy *httputil.ReverseProxy
-
-func init() {
-	parsedURL, err := url.Parse(destHost)
-	if err != nil {
-		log.Fatal(err)
-	}
-	reverseProxy = httputil.NewSingleHostReverseProxy(parsedURL)
-}
-
 type tparams struct {
 	UnsignedTokenBase64 string
 	NeedBits            uint
@@ -127,37 +112,3 @@ func getRemoteIP(request *http.Request) (remoteIP string) {
 	}
 	return
 }
-
-func makeSignedToken(request *http.Request) []byte {
-	buf := make([]byte, 0, 2*sha256.Size)
-
-	timeBuf := make([]byte, binary.MaxVarintLen64)
-	binary.PutVarint(timeBuf, time.Now().Unix()/604800)
-
-	remoteIP := getRemoteIP(request)
-
-	h := sha256.New()
-	h.Write(timeBuf)
-	h.Write(stringToBytes(remoteIP))
-	h.Write(stringToBytes(request.Header.Get("User-Agent")))
-	h.Write(stringToBytes(request.Header.Get("Accept-Encoding")))
-	h.Write(stringToBytes(request.Header.Get("Accept-Language")))
-	h.Write(privkeyHash)
-	buf = h.Sum(buf)
-	if len(buf) != sha256.Size {
-		panic("unexpected buffer length after hashing contents")
-	}
-
-	mac := hmac.New(sha256.New, privkey)
-	mac.Write(buf)
-	buf = mac.Sum(buf)
-	if len(buf) != 2*sha256.Size {
-		panic("unexpected buffer length after hmac")
-	}
-
-	return buf
-}
-
-func proxyRequest(writer http.ResponseWriter, request *http.Request) {
-	reverseProxy.ServeHTTP(writer, request)
-}
-- 
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