update matcher for gist usercontent

proxy/match.go

@@ -10,14 +10,16 @@ import (
 )
 
 var (
-	githubPrefix    = "https://github.com/"
+	githubPrefix         = "https://github.com/"
-	rawPrefix       = "https://raw.githubusercontent.com/"
+	rawPrefix            = "https://raw.githubusercontent.com/"
-	gistPrefix      = "https://gist.github.com/"
+	gistPrefix           = "https://gist.github.com/"
-	apiPrefix       = "https://api.github.com/"
+	gistContentPrefix    = "https://gist.githubusercontent.com/"
-	githubPrefixLen int
+	apiPrefix            = "https://api.github.com/"
-	rawPrefixLen    int
+	githubPrefixLen      int
-	gistPrefixLen   int
+	rawPrefixLen         int
-	apiPrefixLen    int
+	gistPrefixLen        int
+	gistContentPrefixLen int
+	apiPrefixLen         int
 )
 
 func init() {
@@ -25,6 +27,7 @@ func init() {
 	rawPrefixLen = len(rawPrefix)
 	gistPrefixLen = len(gistPrefix)
 	apiPrefixLen = len(apiPrefix)
+	gistContentPrefixLen = len(gistContentPrefix)
 	//log.Printf("githubPrefixLen: %d, rawPrefixLen: %d, gistPrefixLen: %d, apiPrefixLen: %d", githubPrefixLen, rawPrefixLen, gistPrefixLen, apiPrefixLen)
 }
 
@@ -114,6 +117,23 @@ func Matcher(rawPath string, cfg *config.Config) (string, string, string, *GHPro
 		return user, "", "gist", nil
 	}
 
+	// 匹配 "https://gist.githubusercontent.com/"
+	if strings.HasPrefix(rawPath, gistContentPrefix) {
+		remaining := rawPath[gistContentPrefixLen:]
+		i := strings.IndexByte(remaining, '/')
+		if i <= 0 {
+			// case: https://gist.githubusercontent.com/user
+			// 这种情况下, gist_id 缺失, 但我们仍然可以认为 user 是有效的
+			if len(remaining) > 0 {
+				return remaining, "", "gist", nil
+			}
+			return "", "", "", NewErrorWithStatusLookup(400, "malformed gist url: missing user")
+		}
+		// case: https://gist.githubusercontent.com/user/gist_id...
+		user := remaining[:i]
+		return user, "", "gist", nil
+	}
+
 	// 匹配 "https://api.github.com/"
 	if strings.HasPrefix(rawPath, apiPrefix) {
 		if !cfg.Auth.ForceAllowApi && (cfg.Auth.Method != "header" || !cfg.Auth.Enabled) {

proxy/matcher_test.go

@@ -87,6 +87,12 @@ func TestMatcher_Compatibility(t *testing.T) {
 			config:       cfgWithAuth,
 			expectedUser: "user", expectedRepo: "", expectedMatcher: "gist",
 		},
+		{
+			name:         "Gist UserContent Path",
+			rawPath:      "https://gist.githubusercontent.com/user/abcdef1234567890",
+			config:       cfgWithAuth,
+			expectedUser: "user", expectedRepo: "", expectedMatcher: "gist",
+		},
 		{
 			name:         "API Repos Path (with Auth)",
 			rawPath:      "https://api.github.com/repos/owner/repo/pulls",