developer can push to protected branches

app/controllers/projects/merge_requests_controller.rb

@@ -233,13 +233,7 @@ class Projects::MergeRequestsController < Projects::ApplicationController
   end
 
   def allowed_to_push_code?(project, branch)
-    action = if project.protected_branch?(branch)
-               :push_code_to_protected_branches
-             else
-               :push_code
-             end
-
-    can?(current_user, action, project)
+    ::Gitlab::GitAccess.can_push_to_branch?(current_user, project, branch)
   end
 
   def merge_request_params

app/helpers/branches_helper.rb

@@ -11,12 +11,7 @@ module BranchesHelper
 
   def can_push_branch?(project, branch_name)
     return false unless project.repository.branch_names.include?(branch_name)
-    action = if project.protected_branch?(branch_name)
-               :push_code_to_protected_branches
-             else
-               :push_code
-             end
-
-    current_user.can?(action, project)
+    
+    ::Gitlab::GitAccess.can_push_to_branch?(current_user, project, branch_name)
   end
 end

app/helpers/tree_helper.rb

@@ -58,11 +58,7 @@ module TreeHelper
     ref ||= @ref
     return false unless project.repository.branch_names.include?(ref)
 
-    if project.protected_branch? ref
-      can?(current_user, :push_code_to_protected_branches, project)
-    else
-      can?(current_user, :push_code, project)
-    end
+    ::Gitlab::GitAccess.can_push_to_branch?(current_user, project, ref)
   end
 
   def edit_blob_link(project, ref, path, options = {})

app/services/files/create_service.rb

@@ -3,11 +3,7 @@ require_relative "base_service"
 module Files
   class CreateService < BaseService
     def execute
-      allowed = if project.protected_branch?(ref)
-                  can?(current_user, :push_code_to_protected_branches, project)
-                else
-                  can?(current_user, :push_code, project)
-                end
+      allowed = Gitlab::GitAccess.can_push_to_branch?(current_user, project, ref)
 
       unless allowed
         return error("You are not allowed to create file in this branch")

app/services/files/delete_service.rb

@@ -3,11 +3,7 @@ require_relative "base_service"
 module Files
   class DeleteService < BaseService
     def execute
-      allowed = if project.protected_branch?(ref)
-                  can?(current_user, :push_code_to_protected_branches, project)
-                else
-                  can?(current_user, :push_code, project)
-                end
+      allowed = ::Gitlab::GitAccess.can_push_to_branch?(current_user, project, ref)
 
       unless allowed
         return error("You are not allowed to push into this branch")

app/services/files/update_service.rb

@@ -3,11 +3,7 @@ require_relative "base_service"
 module Files
   class UpdateService < BaseService
     def execute
-      allowed = if project.protected_branch?(ref)
-                  can?(current_user, :push_code_to_protected_branches, project)
-                else
-                  can?(current_user, :push_code, project)
-                end
+      allowed = ::Gitlab::GitAccess.can_push_to_branch?(current_user, project, ref)
 
       unless allowed
         return error("You are not allowed to push into this branch")

lib/api/merge_requests.rb

@@ -167,13 +167,9 @@ module API
       put ":id/merge_request/:merge_request_id/merge" do
         merge_request = user_project.merge_requests.find(params[:merge_request_id])
 
-        action = if user_project.protected_branch?(merge_request.target_branch)
-                   :push_code_to_protected_branches
-                 else
-                   :push_code
-                 end
+        allowed = ::Gitlab::GitAccess.can_push_to_branch?(current_user, user_project, merge_request.target_branch)
 
-        if can?(current_user, action, user_project)
+        if allowed
           if merge_request.unchecked?
             merge_request.check_if_can_be_merged
           end

lib/gitlab/git_access.rb

@@ -5,6 +5,15 @@ module Gitlab
 
     attr_reader :params, :project, :git_cmd, :user
 
+    def self.can_push_to_branch?(user, project, ref)
+      if project.protected_branch?(ref)  &&
+          !(project.developers_can_push_to_protected_branch?(ref) && project.team.developer?(user))
+        user.can?(:push_code_to_protected_branches, project)
+      else
+        user.can?(:push_code, project)
+      end
+    end
+
     def check(actor, cmd, project, changes = nil)
       case cmd
       when *DOWNLOAD_COMMANDS

spec/lib/gitlab/git_access_spec.rb

@@ -5,6 +5,68 @@ describe Gitlab::GitAccess do
   let(:project) { create(:project) }
   let(:user) { create(:user) }
 
+  describe 'can_push_to_branch?' do
+    describe 'push to none protected branch' do
+      it "returns true if user is a master" do
+        project.team << [user, :master]
+        Gitlab::GitAccess.can_push_to_branch?(user, project, "random_branch").should be_true
+      end
+
+      it "returns true if user is a developer" do
+        project.team << [user, :developer]
+        Gitlab::GitAccess.can_push_to_branch?(user, project, "random_branch").should be_true
+      end
+
+      it "returns false if user is a reporter" do
+        project.team << [user, :reporter]
+        Gitlab::GitAccess.can_push_to_branch?(user, project, "random_branch").should be_false
+      end
+    end
+
+    describe 'push to protected branch' do
+      before do
+        @branch = create :protected_branch, project: project
+      end
+      
+      it "returns true if user is a master" do
+        project.team << [user, :master]
+        Gitlab::GitAccess.can_push_to_branch?(user, project, @branch.name).should be_true
+      end
+
+      it "returns false if user is a developer" do
+        project.team << [user, :developer]
+        Gitlab::GitAccess.can_push_to_branch?(user, project, @branch.name).should be_false
+      end
+
+      it "returns false if user is a reporter" do
+        project.team << [user, :reporter]
+        Gitlab::GitAccess.can_push_to_branch?(user, project, @branch.name).should be_false
+      end
+    end
+
+    describe 'push to protected branch if allowed for developers' do
+      before do
+        @branch = create :protected_branch, project: project, developers_can_push: true
+      end
+      
+      it "returns true if user is a master" do
+        project.team << [user, :master]
+        Gitlab::GitAccess.can_push_to_branch?(user, project, @branch.name).should be_true
+      end
+
+      it "returns true if user is a developer" do
+        project.team << [user, :developer]
+        Gitlab::GitAccess.can_push_to_branch?(user, project, @branch.name).should be_true
+      end
+
+      it "returns false if user is a reporter" do
+        project.team << [user, :reporter]
+        Gitlab::GitAccess.can_push_to_branch?(user, project, @branch.name).should be_false
+      end
+    end
+
+  end
+
   describe 'download_access_check' do
     describe 'master permissions' do
       before { project.team << [user, :master] }