Fix bug of branches API with tests(go-gitea#25578) (go-gitea#25579)

Backport go-gitea#25578 

This PR added a repository's check when creating/deleting branches via
API. Mirror repository and archive repository cannot do that.

Author: lunny

models/fixtures/mirror.yml

@@ -0,0 +1,49 @@
+-
+  id: 1
+  repo_id: 5
+  interval: 3600
+  enable_prune: false
+  updated_unix: 0
+  next_update_unix: 0
+  lfs_enabled: false
+  lfs_endpoint: ""
+
+-
+  id: 2
+  repo_id: 25
+  interval: 3600
+  enable_prune: false
+  updated_unix: 0
+  next_update_unix: 0
+  lfs_enabled: false
+  lfs_endpoint: ""
+
+-
+  id: 3
+  repo_id: 26
+  interval: 3600
+  enable_prune: false
+  updated_unix: 0
+  next_update_unix: 0
+  lfs_enabled: false
+  lfs_endpoint: ""
+
+-
+  id: 4
+  repo_id: 27
+  interval: 3600
+  enable_prune: false
+  updated_unix: 0
+  next_update_unix: 0
+  lfs_enabled: false
+  lfs_endpoint: ""
+
+-
+  id: 5
+  repo_id: 28
+  interval: 3600
+  enable_prune: false
+  updated_unix: 0
+  next_update_unix: 0
+  lfs_enabled: false
+  lfs_endpoint: ""

models/fixtures/repository.yml

@@ -141,7 +141,7 @@
   num_projects: 0
   num_closed_projects: 0
   is_private: true
-  is_empty: true
+  is_empty: false
   is_archived: false
   is_mirror: true
   status: 0

routers/api/v1/repo/branch.go

@@ -116,6 +116,21 @@ func DeleteBranch(ctx *context.APIContext) {
 	//   "404":
 	//     "$ref": "#/responses/notFound"
 
+	if ctx.Repo.Repository.IsEmpty {
+		ctx.Error(http.StatusNotFound, "", "Git Repository is empty.")
+		return
+	}
+
+	if ctx.Repo.Repository.IsArchived {
+		ctx.Error(http.StatusForbidden, "", "Git Repository is archived.")
+		return
+	}
+
+	if ctx.Repo.Repository.IsMirror {
+		ctx.Error(http.StatusForbidden, "", "Git Repository is a mirror.")
+		return
+	}
+
 	branchName := ctx.Params("*")
 
 	if err := repo_service.DeleteBranch(ctx, ctx.Doer, ctx.Repo.Repository, ctx.Repo.GitRepo, branchName); err != nil {
@@ -162,17 +177,30 @@ func CreateBranch(ctx *context.APIContext) {
 	// responses:
 	//   "201":
 	//     "$ref": "#/responses/Branch"
+	//   "403":
+	//     description: The branch is archived or a mirror.
 	//   "404":
 	//     description: The old branch does not exist.
 	//   "409":
 	//     description: The branch with the same name already exists.
 
-	opt := web.GetForm(ctx).(*api.CreateBranchRepoOption)
 	if ctx.Repo.Repository.IsEmpty {
 		ctx.Error(http.StatusNotFound, "", "Git Repository is empty.")
 		return
 	}
 
+	if ctx.Repo.Repository.IsArchived {
+		ctx.Error(http.StatusForbidden, "", "Git Repository is archived.")
+		return
+	}
+
+	if ctx.Repo.Repository.IsMirror {
+		ctx.Error(http.StatusForbidden, "", "Git Repository is a mirror.")
+		return
+	}
+
+	opt := web.GetForm(ctx).(*api.CreateBranchRepoOption)
+
 	var oldCommit *git.Commit
 	var err error
 
@@ -280,7 +308,12 @@ func ListBranches(ctx *context.APIContext) {
 
 	listOptions := utils.GetListOptions(ctx)
 
-	if !ctx.Repo.Repository.IsEmpty && ctx.Repo.GitRepo != nil {
+	if !ctx.Repo.Repository.IsEmpty {
+		if ctx.Repo.GitRepo == nil {
+			ctx.Error(http.StatusInternalServerError, "Load git repository failed", nil)
+			return
+		}
+
 		rules, err := git_model.FindRepoProtectedBranchRules(ctx, ctx.Repo.Repository.ID)
 		if err != nil {
 			ctx.Error(http.StatusInternalServerError, "FindMatchedProtectedBranchRules", err)

templates/swagger/v1_json.tmpl

@@ -0,0 +1 @@
+ref: refs/heads/master

tests/gitea-repositories-meta/user3/repo5.git/HEAD

@@ -0,0 +1,6 @@
+[core]
+	repositoryformatversion = 0
+	filemode = true
+	bare = true
+	ignorecase = true
+	precomposeunicode = true

tests/gitea-repositories-meta/user3/repo5.git/config

@@ -0,0 +1 @@
+Unnamed repository; edit this file 'description' to name the repository.

tests/gitea-repositories-meta/user3/repo5.git/description

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+ORI_DIR=`pwd`
+SHELL_FOLDER=$(cd "$(dirname "$0")";pwd)
+cd "$ORI_DIR"
+for i in `ls "$SHELL_FOLDER/post-receive.d"`; do
+    sh "$SHELL_FOLDER/post-receive.d/$i"
+done

tests/gitea-repositories-meta/user3/repo5.git/hooks/post-receive

@@ -0,0 +1,2 @@
+#!/usr/bin/env bash
+"$GITEA_ROOT/gitea" hook --config="$GITEA_ROOT/$GITEA_CONF" post-receive

tests/gitea-repositories-meta/user3/repo5.git/hooks/post-receive.d/gitea

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+ORI_DIR=`pwd`
+SHELL_FOLDER=$(cd "$(dirname "$0")";pwd)
+cd "$ORI_DIR"
+for i in `ls "$SHELL_FOLDER/pre-receive.d"`; do
+    sh "$SHELL_FOLDER/pre-receive.d/$i"
+done