Add GitLab webhook support

app/blueprints/gitlab/__init__.py

@@ -0,0 +1,64 @@
+# ContentDB
+# Copyright (C) 2020  rubenwardy
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+from flask import Blueprint, request
+
+bp = Blueprint("gitlab", __name__)
+
+from app import csrf
+from app.models import Package, APIToken, Permission
+from app.blueprints.api.support import error, handleCreateRelease
+
+
+@bp.route("/gitlab/webhook/", methods=["POST"])
+@csrf.exempt
+def webhook():
+	json = request.json
+
+	# Get package
+	gitlab_url = "gitlab.com/{}/{}".format(json["project"]["namespace"], json["project"]["name"])
+	package = Package.query.filter(Package.repo.like("%{}%".format(gitlab_url))).first()
+	if package is None:
+		return error(400, "Unknown package")
+
+	# Get all tokens for package
+	secret = request.headers.get("X-Gitlab-Token")
+	if secret is None:
+		return error(403, "Token required")
+
+	token = APIToken.query.filter_by(access_token=secret).first()
+	if secret is None:
+		return error(403, "Invalid authentication")
+
+	if not package.checkPerm(token.owner, Permission.APPROVE_RELEASE):
+		return error(403, "Only trusted members can use webhooks")
+
+	#
+	# Check event
+	#
+
+	event = json["event_name"]
+	if event == "push":
+		ref = json["after"]
+		title = ref[:5]
+	else:
+		return error(400, "Unsupported event. Only 'push' is supported.")
+
+	#
+	# Perform release
+	#
+
+	return handleCreateRelease(token, package, title, ref)