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210 lines (180 loc) · 6.86 KB
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# --------------------------- IMPORTS --------------------------- #
from datetime import datetime
import os
import urllib
from flask import Flask, abort, request, session, redirect, render_template
import requests
import requests.auth
from dotenv import load_dotenv
# ------------------------- END IMPORTS ------------------------- #
# adding session may have fixed the problem with session variable runtime error.
session = {}
session['bool'] = False
# loads the environment variables
load_dotenv()
CLIENT_ID = os.getenv("CLIENT_ID")
CLIENT_SECRET = os.getenv("CLIENT_SECRET")
REDIRECT_URI = os.getenv("REDIRECT_URI")
OAUTH_URL = os.getenv("OAUTH_URL")
BASE_URL = os.getenv("BASE_URL")
# end loading env variables
def gen_secret_key():
"""
DESCRIPTION:
Generates SECRET_KEY, used for existence session variables
INPUT:
N/A
OUTPUT:
return = randomly generated SECRET_KEY
"""
return os.urandom(16)
def gen_token_disp(token):
"""
DESCRIPTION:
Grabs the first and last 7 characters of the token and appends them to '...'
ex: D5tWEds...565EER_
INPUT:
token = access_token/refresh_token
OUTPUT:
return = concatinated string of auth
"""
return token[:7] + '...' + token[-7:]
def update_date(created_at):
'''
DESCRIPTION:
Turns unix time stamp into human readable time for the expire_date.Takes in unix created_at
time value and adds 7200 (2 hours) to the created_at value before converting time.
INPUTS:
created_at = the unix date and time of the authorization token creation.
OUTPUT:
return = returns the created_at unix date/time in a human-readable format
'''
return datetime.utcfromtimestamp(created_at).strftime('%Y-%m-%d %H:%M:%S')
def update_expire(created_at):
'''
DESCRIPTION:
Turns unix time stamp into human readable time for the expire_date.Takes in unix created_at
time value and adds 7200 (2 hours) to the created_at value before converting time.
INPUTS:
created_at = the unix date and time of the authorization token creation.
OUTPUT:
return = returns the expires_at unix date/time in a human-readable format.
'''
return datetime.utcfromtimestamp(created_at+7200).strftime('%Y-%m-%d %H:%M:%S')
def get_me(access_token):
'''
DESCRIPTION:
Calls /rest/v1.0/me endpoint and returns user login/id.
INPUTS:
access_token = access_token used as credentials to communicate with the API
OUTPUTS:
me_json['login'] = user's login name
me_json['id'] = user's login ID
'''
headers = {"Authorization": "Bearer " + access_token}
response = requests.get(BASE_URL+"/rest/v1.0/me", headers=headers)
me_json = response.json()
return me_json['login'], me_json['id']
def make_authorization_url():
'''
DESCRIPTION:
Creates the authorization URL to obtain the authorization code from Procore.
INPUTS:
N/A
OUTPUTS:
url: the url used to obtain the authorization code from the application.
'''
# Generate a random string for the state parameter
# Save it for use later to prevent xsrf attacks
params = {
"client_id": CLIENT_ID,
"response_type": "code",
"redirect_uri": REDIRECT_URI
}
url = OAUTH_URL + "/oauth/authorize?" + urllib.parse.urlencode(params)
return url
def get_token(code):
'''
DESCRIPTION:
Gets the access token by utilizating the authorization code that was
previously obtained from the authorization_url call.
INPUTS:
code = authorization code
OUTPUTS:
response_json["access_token"] = user's current access token
response_json["refresh_token"] = user's current refresh token
response_json['created_at'] = the date and time the user's access
token was generated
'''
client_auth = requests.auth.HTTPBasicAuth(CLIENT_ID, CLIENT_SECRET)
post_data = {"grant_type": "authorization_code",
"code": code,
"redirect_uri": REDIRECT_URI
}
response = requests.post(BASE_URL+"/oauth/token",
auth=client_auth,
data=post_data)
response_json = response.json()
return response_json["access_token"], response_json["refresh_token"], response_json['created_at']
# -------------------------app REDIRECTS --------------------------- #
app = Flask(__name__)
# Need to use session variables which help us carry values of different webpages
app.secret_key = gen_secret_key()
@app.route('/', methods=["GET", "POST"])
def app_homepage():
return render_template('login.html')
@app.route('/get_auth', methods=["POST"])
def app_auth():
return redirect(make_authorization_url())
@app.route('/users/home', methods=['POST', 'GET'])
def app_callback():
if request.method == "GET":
if session.get('bool') is False:
code = request.args.get('code')
access_token, refresh_token, created_at = get_token(code)
session['access_token'] = access_token
session['refresh_token'] = refresh_token
session['created_at'] = update_date(created_at)
session['expires_at'] = update_expire(created_at)
session['bool'] = True
html = render_template('home.html')
return html.format(
gen_token_disp(session.get('access_token')),
session.get('created_at'),
session['expires_at'],
gen_token_disp(session['refresh_token'])
)
@app.route('/users/me', methods=["GET"])
def app_page_me():
[login, my_id] = get_me(session.get('access_token'))
html = render_template('me.html')
return html % (my_id, login)
@app.route('/users/refreshtoken', methods=["POST"])
def app_refresh_token():
access_token = session.get('access_token')
refresh_token = session.get('refresh_token')
headers = {"Authorization": "Bearer " + access_token}
data = {
"client_id": CLIENT_ID,
"grant_type": "refresh_token",
"redirect_uri": REDIRECT_URI,
"client_secret": CLIENT_SECRET,
"refresh_token": refresh_token
}
response = requests.post(BASE_URL+'/oauth/token', data=data, headers=headers)
response_json = response.json()
session['access_token'] = response_json['access_token']
session['refresh_token'] = response_json['refresh_token']
session['created_at'] = update_date(response_json['created_at'])
session['expires_at'] = update_expire(response_json['created_at'])
return redirect('/users/home')
@app.route('/users/revoketoken', methods=['POST'])
def app_revoke_token():
access_token = session.get('access_token')
data = {
"client_id": CLIENT_ID,
"client_secret": CLIENT_SECRET,
"token": access_token
}
requests.post(BASE_URL+'/oauth/token', data=data)
return redirect('/')