150 lines
5.0 KiB
Python
150 lines
5.0 KiB
Python
# ContentDB
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# Copyright (C) 2018-21 rubenwardy
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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from flask import Blueprint
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bp = Blueprint("github", __name__)
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from flask import redirect, url_for, request, flash, jsonify, current_app
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from flask_login import current_user
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from sqlalchemy import func, or_, and_
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from app import github, csrf
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from app.models import db, User, APIToken, Package, Permission, AuditSeverity
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from app.utils import abs_url_for, addAuditLog, login_user_set_active
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from app.blueprints.api.support import error, handleCreateRelease
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import hmac, requests
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@bp.route("/github/start/")
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def start():
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return github.authorize("", redirect_uri=abs_url_for("github.callback"))
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@bp.route("/github/view/")
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def view_permissions():
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url = "https://github.com/settings/connections/applications/" + \
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current_app.config["GITHUB_CLIENT_ID"]
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return redirect(url)
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@bp.route("/github/callback/")
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@github.authorized_handler
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def callback(oauth_token):
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next_url = request.args.get("next")
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if oauth_token is None:
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flash("Authorization failed [err=gh-oauth-login-failed]", "danger")
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return redirect(url_for("users.login"))
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# Get Github username
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url = "https://api.github.com/user"
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r = requests.get(url, headers={"Authorization": "token " + oauth_token})
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username = r.json()["login"]
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# Get user by github username
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userByGithub = User.query.filter(func.lower(User.github_username) == func.lower(username)).first()
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# If logged in, connect
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if current_user and current_user.is_authenticated:
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if userByGithub is None:
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current_user.github_username = username
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db.session.commit()
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flash("Linked github to account", "success")
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return redirect(url_for("homepage.home"))
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else:
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flash("Github account is already associated with another user", "danger")
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return redirect(url_for("homepage.home"))
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# If not logged in, log in
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else:
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if userByGithub is None:
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flash("Unable to find an account for that Github user", "danger")
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return redirect(url_for("users.claim_forums"))
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elif login_user_set_active(userByGithub, remember=True):
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addAuditLog(AuditSeverity.USER, userByGithub, "Logged in using GitHub OAuth",
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url_for("users.profile", username=userByGithub.username))
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db.session.commit()
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if not current_user.password:
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return redirect(next_url or url_for("users.set_password", optional=True))
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else:
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return redirect(next_url or url_for("homepage.home"))
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else:
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flash("Authorization failed [err=gh-login-failed]", "danger")
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return redirect(url_for("users.login"))
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@bp.route("/github/webhook/", methods=["POST"])
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@csrf.exempt
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def webhook():
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json = request.json
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# Get package
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github_url = "github.com/" + json["repository"]["full_name"]
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package = Package.query.filter(Package.repo.ilike("%{}%".format(github_url))).first()
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if package is None:
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return error(400, "Could not find package, did you set the VCS repo in CDB correctly? Expected {}".format(github_url))
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# Get all tokens for package
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tokens_query = APIToken.query.filter(or_(APIToken.package==package,
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and_(APIToken.package==None, APIToken.owner==package.author)))
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possible_tokens = tokens_query.all()
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actual_token = None
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#
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# Check signature
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#
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header_signature = request.headers.get('X-Hub-Signature')
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if header_signature is None:
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return error(403, "Expected payload signature")
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sha_name, signature = header_signature.split('=')
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if sha_name != 'sha1':
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return error(403, "Expected SHA1 payload signature")
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for token in possible_tokens:
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mac = hmac.new(token.access_token.encode("utf-8"), msg=request.data, digestmod='sha1')
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if hmac.compare_digest(str(mac.hexdigest()), signature):
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actual_token = token
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break
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if actual_token is None:
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return error(403, "Invalid authentication, couldn't validate API token")
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if not package.checkPerm(actual_token.owner, Permission.APPROVE_RELEASE):
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return error(403, "You do not have the permission to approve releases")
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#
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# Check event
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#
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event = request.headers.get("X-GitHub-Event")
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if event == "push":
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ref = json["after"]
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title = json["head_commit"]["message"].partition("\n")[0]
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elif event == "create" and json["ref_type"] == "tag":
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ref = json["ref"]
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title = ref
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elif event == "ping":
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return jsonify({ "success": True, "message": "Ping successful" })
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else:
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return error(400, "Unsupported event. Only 'push', `create:tag`, and 'ping' are supported.")
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#
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# Perform release
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#
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return handleCreateRelease(actual_token, package, title, ref)
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