Initial commit
Joel Franusic
10 years ago
commit
98d0bdcbfc
@ -0,0 +1,4 @@
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*.pyc
|
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venv/
|
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|
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*~
|
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@ -0,0 +1,202 @@
|
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|
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Apache License
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@ -0,0 +1,233 @@
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# -*- coding: utf-8 -*-
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||||
# Copyright 2015 Okta, Inc.
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||||
#
|
||||
# Licensed under the Apache License, Version 2.0 (the "License");
|
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
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# See the License for the specific language governing permissions and
|
||||
# limitations under the License.
|
||||
import logging
|
||||
import os
|
||||
import uuid
|
||||
|
||||
from flask import (
|
||||
Flask,
|
||||
redirect,
|
||||
render_template,
|
||||
request,
|
||||
session,
|
||||
url_for,
|
||||
)
|
||||
from flask.ext.login import (
|
||||
LoginManager,
|
||||
UserMixin,
|
||||
current_user,
|
||||
login_required,
|
||||
login_user,
|
||||
logout_user,
|
||||
)
|
||||
from flask_bootstrap import Bootstrap
|
||||
from saml2 import (
|
||||
BINDING_HTTP_POST,
|
||||
BINDING_HTTP_REDIRECT,
|
||||
entity,
|
||||
)
|
||||
from saml2.client import Saml2Client
|
||||
from saml2.config import Config as Saml2Config
|
||||
import requests
|
||||
|
||||
# metadata_url_for contains PER APPLICATION configuration settings.
|
||||
# Each SAML service that you support will have different values here.
|
||||
#
|
||||
# NOTE:
|
||||
# This is implemented as a dictionary for DEMONSTRATION PURPOSES ONLY.
|
||||
# On a production system, this information should be stored as approprate
|
||||
# for your concept of "customer company", "group", "organization", or "team"
|
||||
metadata_url_for = {
|
||||
# For testing with http://saml.oktadev.com use the following:
|
||||
# 'test': 'http://idp.oktadev.com/metadata',
|
||||
# WARNING WARNING WARNING
|
||||
# You MUST remove the testing IdP from a production system,
|
||||
# as the testing IdP will allow ANYBODY to log in as ANY USER!
|
||||
# WARNING WARNING WARNING
|
||||
}
|
||||
|
||||
app = Flask(__name__)
|
||||
Bootstrap(app)
|
||||
app.secret_key = str(uuid.uuid4()) # Replace with your secret key
|
||||
login_manager = LoginManager()
|
||||
login_manager.setup_app(app)
|
||||
logging.basicConfig(level=logging.DEBUG)
|
||||
# NOTE:
|
||||
# This is implemented as a dictionary for DEMONSTRATION PURPOSES ONLY.
|
||||
# On a production system, this information must come
|
||||
# from your system's user store.
|
||||
user_store = {}
|
||||
|
||||
|
||||
def saml_client_for(idp_name=None):
|
||||
'''
|
||||
Given the name of an IdP, return a configuation.
|
||||
The configuration is a hash for use by saml2.config.Config
|
||||
'''
|
||||
|
||||
if idp_name not in metadata_url_for:
|
||||
raise Exception("Settings for IDP '{}' not found".format(idp_name))
|
||||
acs_url = url_for(
|
||||
"idp_initiated",
|
||||
idp_name=idp_name,
|
||||
_external=True)
|
||||
|
||||
# NOTE:
|
||||
# Ideally, this should fetch the metadata and pass it to
|
||||
# PySAML2 via the "inline" metadata type.
|
||||
# However, this method doesn't seem to work on PySAML2 v2.4.0
|
||||
#
|
||||
# SAML metadata changes very rarely. On a production system,
|
||||
# this data should be cached as approprate for your production system.
|
||||
rv = requests.get(metadata_url_for[idp_name])
|
||||
import tempfile
|
||||
tmp = tempfile.NamedTemporaryFile()
|
||||
f = open(tmp.name, 'w')
|
||||
f.write(rv.text)
|
||||
f.close()
|
||||
|
||||
settings = {
|
||||
'metadata': {
|
||||
# 'inline': metadata,
|
||||
"local": [tmp.name]
|
||||
},
|
||||
'service': {
|
||||
'sp': {
|
||||
'endpoints': {
|
||||
'assertion_consumer_service': [
|
||||
(acs_url, BINDING_HTTP_REDIRECT),
|
||||
(acs_url, BINDING_HTTP_POST)
|
||||
],
|
||||
},
|
||||
# Don't verify that the incoming requests originate from us via
|
||||
# the built-in cache for authn request ids in pysaml2
|
||||
'allow_unsolicited': True,
|
||||
# Don't sign authn requests, since signed requests only make
|
||||
# sense in a situation where you control both the SP and IdP
|
||||
'authn_requests_signed': False,
|
||||
'logout_requests_signed': True,
|
||||
'want_assertions_signed': True,
|
||||
'want_response_signed': False,
|
||||
},
|
||||
},
|
||||
}
|
||||
spConfig = Saml2Config()
|
||||
spConfig.load(settings)
|
||||
spConfig.allow_unknown_attributes = True
|
||||
saml_client = Saml2Client(config=spConfig)
|
||||
tmp.close()
|
||||
return saml_client
|
||||
|
||||
|
||||
class User(UserMixin):
|
||||
def __init__(self, user_id):
|
||||
user = {}
|
||||
self.id = None
|
||||
self.first_name = None
|
||||
self.last_name = None
|
||||
try:
|
||||
user = user_store[user_id]
|
||||
self.id = unicode(user_id)
|
||||
self.first_name = user['first_name']
|
||||
self.last_name = user['last_name']
|
||||
except:
|
||||
pass
|
||||
|
||||
|
||||
@login_manager.user_loader
|
||||
def load_user(user_id):
|
||||
return User(user_id)
|
||||
|
||||
|
||||
@app.route("/")
|
||||
def main_page():
|
||||
return render_template('main_page.html', idp_dict=metadata_url_for)
|
||||
|
||||
|
||||
@app.route("/saml/sso/<idp_name>", methods=['POST'])
|
||||
def idp_initiated(idp_name):
|
||||
saml_client = saml_client_for(idp_name)
|
||||
authn_response = saml_client.parse_authn_request_response(
|
||||
request.form['SAMLResponse'],
|
||||
entity.BINDING_HTTP_POST)
|
||||
authn_response.get_identity()
|
||||
user_info = authn_response.get_subject()
|
||||
username = user_info.text
|
||||
|
||||
# This is what as known as "Just In Time (JIT) provisioning".
|
||||
# What that means is that, if a user in a SAML assertion
|
||||
# isn't in the user store, we create that user first, then log them in
|
||||
if username not in user_store:
|
||||
user_store[username] = {
|
||||
'first_name': authn_response.ava['FirstName'][0],
|
||||
'last_name': authn_response.ava['LastName'][0],
|
||||
}
|
||||
user = User(username)
|
||||
session['saml_attributes'] = authn_response.ava
|
||||
login_user(user)
|
||||
url = url_for('user')
|
||||
# NOTE:
|
||||
# On a production system, the RelayState MUST be checked
|
||||
# to make sure it doesn't contain dangerous URLs!
|
||||
if 'RelayState' in request.form:
|
||||
url = request.form['RelayState']
|
||||
return redirect(url)
|
||||
|
||||
|
||||
@app.route("/saml/login/<idp_name>")
|
||||
def sp_initiated(idp_name):
|
||||
saml_client = saml_client_for(idp_name)
|
||||
reqid, info = saml_client.prepare_for_authenticate()
|
||||
|
||||
redirect_url = None
|
||||
# Select the IdP URL to send the AuthN request to
|
||||
for key, value in info['headers']:
|
||||
if key is 'Location':
|
||||
redirect_url = value
|
||||
response = redirect(redirect_url, code=302)
|
||||
# NOTE:
|
||||
# I realize I _technically_ don't need to set Cache-Control or Pragma:
|
||||
# http://stackoverflow.com/a/5494469
|
||||
# However, Section 3.2.3.2 of the SAML spec suggests they are set:
|
||||
# http://docs.oasis-open.org/security/saml/v2.0/saml-bindings-2.0-os.pdf
|
||||
# We set those headers here as a "belt and suspenders" approach,
|
||||
# since enterprise environments don't always conform to RFCs
|
||||
response.headers['Cache-Control'] = 'no-cache, no-store'
|
||||
response.headers['Pragma'] = 'no-cache'
|
||||
return response
|
||||
|
||||
|
||||
@app.route("/user")
|
||||
@login_required
|
||||
def user():
|
||||
return render_template('user.html', session=session)
|
||||
|
||||
|
||||
@app.errorhandler(401)
|
||||
def error_unauthorized(error):
|
||||
return render_template('unauthorized.html')
|
||||
|
||||
|
||||
@app.route("/logout")
|
||||
@login_required
|
||||
def logout():
|
||||
logout_user()
|
||||
return redirect(url_for("main_page"))
|
||||
|
||||
if __name__ == "__main__":
|
||||
port = int(os.environ.get('PORT', 5000))
|
||||
if port == 5000:
|
||||
app.debug = True
|
||||
app.run(host='0.0.0.0', port=port)
|
||||
@ -0,0 +1,4 @@
|
||||
Flask==0.10.1
|
||||
Flask-Bootstrap==3.3.2.1
|
||||
Flask-Login==0.2.11
|
||||
pysaml2==2.4.0
|
||||
@ -0,0 +1,32 @@
|
||||
{% extends "bootstrap/base.html" %}
|
||||
{% set application_name = 'PySAML2 Example SAML SP' %}
|
||||
{% block title %}{{ application_name }}{% endblock %}
|
||||
{% block body_attribs %} style="padding-top: 60px"{% endblock %}
|
||||
{% block navbar %}
|
||||
<nav class="navbar navbar-inverse navbar-fixed-top">
|
||||
<div class="container">
|
||||
<div class="navbar-header">
|
||||
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
|
||||
<span class="sr-only">Toggle navigation</span>
|
||||
<span class="icon-bar"></span>
|
||||
<span class="icon-bar"></span>
|
||||
<span class="icon-bar"></span>
|
||||
</button>
|
||||
<a class="navbar-brand" href="{{ url_for('main_page') }}">{{ application_name }}</a>
|
||||
</div>
|
||||
<div id="navbar" class="collapse navbar-collapse">
|
||||
<ul class="nav navbar-nav">
|
||||
{% if current_user.is_authenticated() %}
|
||||
<li><a href="{{ url_for('user') }}">User</a></li>
|
||||
<li><a href="{{ url_for('logout') }}">Logout</a></li>
|
||||
{% endif %}
|
||||
</ul>
|
||||
</div><!--/.nav-collapse -->
|
||||
</div>
|
||||
</nav>
|
||||
<div class="container">
|
||||
{% endblock %}
|
||||
{% block content %}
|
||||
</div>
|
||||
{% endblock %}
|
||||
|
||||
@ -0,0 +1,9 @@
|
||||
{% extends 'base.html' %}
|
||||
{% block content %}
|
||||
<p class="lead">Select the IdP you want to use to authenticate:</p>
|
||||
<ol>
|
||||
{% for idp in idp_dict.keys() %}
|
||||
<li><a href="/saml/login/{{idp}}">{{idp}}</a></li>
|
||||
{% endfor %}
|
||||
</ol>
|
||||
{% endblock %}
|
||||
@ -0,0 +1,7 @@
|
||||
{% extends 'base.html' %}
|
||||
{% block content %}
|
||||
<h1>Unauthorized</h1>
|
||||
<p>
|
||||
The server could not verify that you are authorized to access the URL requested. You either supplied the wrong credentials (e.g. a bad password), or your browser doesn't understand how to supply the credentials required.
|
||||
</p>
|
||||
{% endblock %}
|
||||
@ -0,0 +1,21 @@
|
||||
{% extends 'base.html' %}
|
||||
{% block content %}
|
||||
<div class="container">
|
||||
<h1>Logged in</h1>
|
||||
<p class="lead">
|
||||
Contents of the most recent SAML assertion:
|
||||
</p>
|
||||
<div class="col-md-8">
|
||||
<table class="table">
|
||||
{% if session.saml_attributes %}
|
||||
{% for attribute in session.saml_attributes.keys() %}
|
||||
<tr>
|
||||
<td>{{ attribute }}</td>
|
||||
<td>{{ session.saml_attributes[attribute][0] }}</td>
|
||||
</tr>
|
||||
{% endfor %}
|
||||
{% endif %}
|
||||
</table>
|
||||
</div>
|
||||
</div>
|
||||
{% endblock %}
|
||||
Loading…
Reference in New Issue