Send 404 on /{org}.gpg (go-gitea#18959)

Backport go-gitea#18959

Author: Gusted

routers/web/org/home.go

@@ -6,6 +6,7 @@ package org
 
 import (
 	"net/http"
+	"strings"
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
@@ -23,7 +24,14 @@ const (
 
 // Home show organization home page
 func Home(ctx *context.Context) {
-	ctx.SetParams(":org", ctx.Params(":username"))
+	uname := ctx.Params(":username")
+
+	if strings.HasSuffix(uname, ".keys") || strings.HasSuffix(uname, ".gpg") {
+		ctx.NotFound("", nil)
+		return
+	}
+
+	ctx.SetParams(":org", uname)
 	context.HandleOrgAssignment(ctx)
 	if ctx.Written() {
 		return
@@ -109,7 +117,7 @@ func Home(ctx *context.Context) {
 		return
 	}
 
-	var opts = &models.FindOrgMembersOpts{
+	opts := &models.FindOrgMembersOpts{
 		OrgID:       org.ID,
 		PublicOnly:  true,
 		ListOptions: db.ListOptions{Page: 1, PageSize: 25},