improve protected branch to add whitelist support (#2451)

* improve protected branch to add whitelist support

* fix lint

* fix style check

* fix tests

* fix description on UI and import

* fix test

* bug fixed

* fix tests and languages

* move isSliceInt64Eq to util pkg; improve function names & typo

1 files changed, 26 insertions, 0 deletions

diff --git a/modules/private/branch.go b/modules/private/branch.go
index 6b3b9170bb..fed66d29ff 100644
--- a/modules/private/branch.go
+++ b/modules/private/branch.go
@@ -38,3 +38,29 @@ func GetProtectedBranchBy(repoID int64, branchName string) (*models.ProtectedBra
 
 	return &branch, nil
 }
+
+// CanUserPush returns if user can push
+func CanUserPush(protectedBranchID, userID int64) (bool, error) {
+	// Ask for running deliver hook and test pull request tasks.
+	reqURL := setting.LocalURL + fmt.Sprintf("api/internal/protectedbranch/%d/%d", protectedBranchID, userID)
+	log.GitLogger.Trace("CanUserPush: %s", reqURL)
+
+	resp, err := newInternalRequest(reqURL, "GET").Response()
+	if err != nil {
+		return false, err
+	}
+
+	var canPush = make(map[string]interface{})
+	if err := json.NewDecoder(resp.Body).Decode(&canPush); err != nil {
+		return false, err
+	}
+
+	defer resp.Body.Close()
+
+	// All 2XX status codes are accepted and others will return an error
+	if resp.StatusCode/100 != 2 {
+		return false, fmt.Errorf("Failed to retrieve push user: %s", decodeJSONError(resp).Err)
+	}
+
+	return canPush["can_push"].(bool), nil
+}