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server.py
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server.py
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"""
Authentication microservice for Atlassian Crowd
@author Jerry Chong
"""
import crowd
import argparse
from flask import Flask, redirect, render_template, request, session, url_for
from werkzeug.exceptions import Unauthorized
CROWD_URL = "your crowd URL"
CROWD_USER = "abc"
CROWD_PASS = "abc"
CROWD_SERVER = crowd.CrowdServer(CROWD_URL, CROWD_USER, CROWD_PASS)
app = Flask(__name__)
app.config.update(
SECRET_KEY="your crowd secret",
SESSION_COOKIE_DOMAIN="your root domain"
)
@app.route("/auth")
def authenticate():
# verify if crowd token is valid, otherwise redirect
token = session.get("token")
user = session.get("crowd_user")
if token and CROWD_SERVER.validate_session(token):
if user:
return ('', {"X-CROWD-USER": user})
else:
return '' # = 200 OK
else:
raise Unauthorized # = 401 unauthorized
# Deprecated: define HTTP redirects on the web server directly!
@app.route("/auth/redirect")
def authenticate_begin():
# initiate login session
host = request.headers["Host"]
callback = request.headers["X-Callback"]
app.logger.info("New login from host: %s callback: %s", host, callback)
return redirect(url_for("login", next=callback))
@app.route("/login", methods=["GET", "POST"])
def login():
# if get, render a login page, else verify
if request.method == "POST":
username = request.form["username"]
password = request.form["password"]
callback = request.form["next"]
if isinstance(callback, str) and len(callback.strip()) == 0:
callback = None
crowd_session = CROWD_SERVER.get_session(username, password)
if crowd_session:
# logged in successfully, merge crowd JSON into session
session.update(crowd_session)
session["crowd_user"] = crowd_session["user"]["name"]
app.logger.debug("User %s <%s> logged in.",
crowd_session["user"]["display-name"],
crowd_session["user"]["email"])
return redirect(callback or url_for("index"))
else:
# failed
app.logger.info("User %s unauthorized.", username)
session["error"] = "Username or password incorrect!"
return redirect(url_for("login", next=callback))
else:
# render a login page
return render_template("login.html",
error=session.pop("error", ""),
next=request.args.get("next", ""))
@app.route("/logout")
def logout():
app.logger.debug("User logged out.")
session.clear()
return redirect(url_for("login"))
@app.route("/")
def index():
# plain index page
return redirect(url_for("login"))
if __name__ == '__main__':
p = argparse.ArgumentParser()
p.add_argument("--host", default="0.0.0.0")
p.add_argument("--port", "-p", default=9000)
p.add_argument("--debug", "-d", action="store_true", default=False)
args = p.parse_args()
# debug mode will allow use of localhost in sessions
if args.debug:
app.config.update(DEBUG=True, SESSION_COOKIE_DOMAIN=None)
app.run(host=args.host, port=args.port, threaded=True)