[breaking-change] Accept multiple index repository patterns.

src/auth.go

@@ -147,18 +147,30 @@ func authorizeWildcardMatch(r *http.Request) ([]string, error) {
 		return nil, err
 	}
 
-	if slices.Equal(hostParts[1:], strings.Split(config.Wildcard.Domain, ".")) {
+	if slices.Equal(hostParts[1:], wildcardPattern.Domain) {
 		userName := hostParts[0]
-		repoName := projectName
-		if repoName == ".index" {
-			repoName = fmt.Sprintf(config.Wildcard.IndexRepo, userName)
+		var repoURLs []string
+		repoURLTemplate := wildcardPattern.CloneURL
+		if projectName == ".index" {
+			for _, indexRepoTemplate := range wildcardPattern.IndexRepos {
+				indexRepo := indexRepoTemplate.ExecuteString(map[string]any{"user": userName})
+				repoURLs = append(repoURLs, repoURLTemplate.ExecuteString(map[string]interface{}{
+					"user":    userName,
+					"project": indexRepo,
+				}))
+			}
+		} else {
+			repoURLs = append(repoURLs, repoURLTemplate.ExecuteString(map[string]interface{}{
+				"user":    userName,
+				"project": projectName,
+			}))
+		}
+		return repoURLs, nil
+	} else {
+		return nil, AuthError{
+			http.StatusUnauthorized,
+			fmt.Sprintf("domain %s does not match wildcard *.%s", host, config.Wildcard.Domain),
 		}
-		return []string{fmt.Sprintf(config.Wildcard.CloneURL, userName, repoName)}, nil
-	}
-
-	return nil, AuthError{
-		http.StatusUnauthorized,
-		fmt.Sprintf("domain %s does not match wildcard *.%s", host, config.Wildcard.Domain),
 	}
 }
 

src/config.go

@@ -1,9 +1,12 @@
 package main
 
 import (
+	"log"
 	"os"
+	"strings"
 
 	"github.com/pelletier/go-toml/v2"
+	"github.com/valyala/fasttemplate"
 )
 
 type CacheConfig struct {
@@ -19,9 +22,9 @@ type Config struct {
 		Health string `toml:"health"`
 	} `toml:"listen"`
 	Wildcard struct {
-		Domain    string `toml:"domain"`
-		CloneURL  string `toml:"clone-url"`
-		IndexRepo string `toml:"index-repo"`
+		Domain     string   `toml:"domain"`
+		CloneURL   string   `toml:"clone-url"`
+		IndexRepos []string `toml:"index-repos"`
 	} `toml:"wildcard"`
 	Backend struct {
 		Type string `toml:"type"`
@@ -41,7 +44,14 @@ type Config struct {
 	} `toml:"backend"`
 }
 
+type WildcardPattern struct {
+	Domain     []string
+	CloneURL   *fasttemplate.Template
+	IndexRepos []*fasttemplate.Template
+}
+
 var config Config
+var wildcardPattern WildcardPattern
 
 func ReadConfig(path string) error {
 	file, err := os.Open(path)
@@ -70,3 +80,25 @@ func UpdateConfigEnv() {
 	updateFromEnv(&config.Backend.S3.Region, "S3_REGION")
 	updateFromEnv(&config.Backend.S3.Bucket, "S3_BUCKET")
 }
+
+func CompileWildcardPattern() {
+	wildcardPattern = WildcardPattern{
+		Domain: strings.Split(config.Wildcard.Domain, "."),
+	}
+
+	template, err := fasttemplate.NewTemplate(config.Wildcard.CloneURL, "<", ">")
+	if err != nil {
+		log.Fatalf("wildcard pattern: clone URL: %s", err)
+	} else {
+		wildcardPattern.CloneURL = template
+	}
+
+	for _, indexRepo := range config.Wildcard.IndexRepos {
+		template, err := fasttemplate.NewTemplate(indexRepo, "<", ">")
+		if err != nil {
+			log.Fatalf("wildcard pattern: clone URL: %s", err)
+		} else {
+			wildcardPattern.IndexRepos = append(wildcardPattern.IndexRepos, template)
+		}
+	}
+}

src/main.go

@@ -43,6 +43,7 @@ func main() {
 		log.Fatalln("config:", err)
 	}
 	UpdateConfigEnv() // environment takes priority
+	CompileWildcardPattern()
 
 	switch config.LogFormat {
 	case "short":