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token_auth.py
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token_auth.py
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#!/usr/bin/env python
"""Token authentication example
This example demonstrates how to protect Flask endpoints with token
authentication, using tokens.
When this application starts, a token is generated for each of the two users.
To gain access, you can use a command line HTTP client such as curl, passing
one of the tokens:
curl -X GET -H "Authorization: Bearer <jwt-token>" http://localhost:5000/
The response should include the username, which is obtained from the token.
"""
from flask import Flask, g
from flask_httpauth import HTTPTokenAuth
from itsdangerous import TimedJSONWebSignatureSerializer as Serializer
app = Flask(__name__)
app.config['SECRET_KEY'] = 'top secret!'
token_serializer = Serializer(app.config['SECRET_KEY'], expires_in=3600)
auth = HTTPTokenAuth('Bearer')
users = ['john', 'susan']
for user in users:
token = token_serializer.dumps({'username': user}).decode('utf-8')
print('*** token for {}: {}\n'.format(user, token))
@auth.verify_token
def verify_token(token):
g.user = None
try:
data = token_serializer.loads(token)
except: # noqa: E722
return False
if 'username' in data:
g.user = data['username']
return True
return False
@app.route('/')
@auth.login_required
def index():
return "Hello, %s!" % g.user
if __name__ == '__main__':
app.run()