/
server.py
263 lines (213 loc) · 9.06 KB
/
server.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
from flask import Flask, url_for
from flask import app, request, render_template
from flask.ext.bcrypt import Bcrypt
from gevent import pywsgi
from geventwebsocket.handler import WebSocketHandler
from geventwebsocket import WebSocketError
from server import app
import hashlib, uuid
import database_helper
import json
import string, random
import re
app = Flask(__name__)
active_sockets = dict()
@app.route('/')
def home():
database_helper.get_db()
#render_template('static/client.html')
return render_template('client.html')
@app.route('/signin', methods=['POST'])
def sign_in():
email = request.form['email']
password = request.form['password']
user = database_helper.get_user(email)
if user == None:
return json.dumps({'success' : False, 'message' : 'This user does not exist'})
elif bcrypt.check_password_hash(user[1], password):
token =''.join(random.SystemRandom().choice(string.ascii_uppercase + string.digits) for _ in range(30));
if database_helper.get_logged_in_user(token):
return json.dumps({'success' : False, 'message' : 'Already logged in'})
elif database_helper.get_logged_in_user_by_email(email):
# remove other token if signed in again
if email in active_sockets:
try:
ws = active_sockets[email]
ws.send(json.dumps({'success' : False, 'message' : 'You have been logged out'}))
except WebSocketError as e:
repr(e)
print "WebSocketError on logout"
# websocket already closed
del active_sockets[email]
database_helper.remove_logged_in_user_by_email(email)
# add token to database
database_helper.add_logged_in_user(email, token)
return json.dumps({'success' : True, 'message' : 'you have logged in', 'data' : token})
else:
return json.dumps({'success' : False, 'message' : 'Wrong password'})
@app.route('/signup', methods=['POST'])
def sign_up():
if request.method == 'POST':
data = {}
data['email'] = request.form['email']
data['password'] = request.form['password']
data['firstname'] = request.form['firstname']
data['familyname'] = request.form['familyname']
data['gender'] = request.form['gender']
data['city'] = request.form['city']
data['country'] = request.form['country']
if not(is_valid_signup(data)):
return json.dumps({'success' : False, 'message' : 'Invalid data'})
if database_helper.get_user(data['email'])==None:
database_helper.add_user(data['email'], bcrypt.generate_password_hash(data['password']), data['firstname'], data['familyname'], data['gender'], data['city'], data['country'])
return json.dumps({'success' : True, 'message' : 'Signup successful'})
return json.dumps({'success' : False, 'message' : 'User already exist'})
def is_valid_signup(data):
if not (re.match("[^@]+@[^@]+\.[^@]+", data['email'])):
return False
if (len(data['password']) < 5):
return False
if (len(data['firstname']) == 0 ):
return False
if (len(data['familyname']) == 0 ):
return False
if not(data['gender'] == 'Female' or data['gender'] == 'Male'):
return False
if (len(data['city']) == 0 ):
return False
if (len(data['country']) == 0 ):
return False
return True
@app.route('/signout', methods=['POST'])
def sign_out():
if database_helper.get_logged_in_user(request.form['token']):
database_helper.remove_logged_in_user(request.form['token'])
return json.dumps({"success": True, "message": "Successfully signed out."})
else:
return json.dumps({"success": False, "message": "You are not signed in"})
@app.route('/changepassword', methods=['POST'])
def change_password():
clientEmail = request.form['clientEmail']
old_password = request.form['old_password']
new_password = request.form['new_password']
if len(new_password) < 5:
return json.dumps({"success": False, "message": "The password has to be 5 characters or more."})
if verifyTokenPOST('changepassword', request):
current_password = database_helper.get_user(clientEmail)[1]
if bcrypt.check_password_hash(current_password, old_password):
database_helper.set_password(clientEmail, bcrypt.generate_password_hash(new_password))
return json.dumps({"success": True, "message": "Password changed."})
return json.dumps({"success": False, "message": "Wrong password."})
return json.dumps({"success": False, "message": "You are not signed in."})
@app.route('/getuserdatabytoken/<clientEmail>/<hashedClientData>', methods=['GET'])
def get_user_data_by_token(clientEmail=None, hashedClientData=None):
if verifyToken('getuserdatabytoken', clientEmail, hashedClientData):
return get_user_data(clientEmail)
else:
return json.dumps({"success": False, "message": "You are not signed in."})
@app.route('/getuserdatabyemail/<email>/<clientEmail>/<hashedClientData>', methods=['GET'])
def get_user_data_by_email(email=None, clientEmail=None, hashedClientData=None):
if verifyToken('getuserdatabyemail/'+email, clientEmail, hashedClientData):
return get_user_data(email)
else:
return json.dumps({"success": False, "message": "You are not signed in."})
def get_user_data(email):
userInfo = database_helper.get_user(email)
if userInfo is None:
return json.dumps({"success": False, "message": "No such user."})
else:
user=[userInfo[0],userInfo[2], userInfo[3], userInfo[4], userInfo[5], userInfo[6]]
return json.dumps({"success": True, "message": "User data retrieved.", "data": user})
@app.route('/getusermessagesbytoken/<clientEmail>/<hashedClientData>', methods=['GET'])
def get_user_messages_by_token(clientEmail=None, hashedClientData=None):
if verifyToken('getusermessagesbytoken', clientEmail, hashedClientData):
messages = database_helper.get_user_messages(clientEmail)
return json.dumps({"success": True, "message": "Messages retrieved.", "data": messages})
return json.dumps({"success": False, "message": "You are not signed in."})
@app.route('/getusermessagesbyemail/<email>/<clientEmail>/<hashedClientData>', methods=['GET'])
def get_user_messagaes_by_email(email=None, clientEmail=None, hashedClientData=None):
if verifyToken('getusermessagesbyemail/'+email, clientEmail, hashedClientData):
userInfo = database_helper.get_user(email)
if userInfo != None:
messages = database_helper.get_user_messages(email)
return json.dumps({"success": True, "message": "Messages retrieved.", "data": messages})
return json.dumps({"success": False, "message": "Could not find user."})
else:
return json.dumps({"success": False, "message": "You are not signed in."})
@app.route('/postmessage', methods=['POST'])
def post_message():
if verifyTokenPOST('postmessage', request):
database_helper.add_user_message(request.form['email'], request.form['clientEmail'], request.form['message'])
return json.dumps({"success": True, "message": "Message posted"})
return json.dumps({"success": False, "message": "Message not posted"})
@app.route('/connectsocket')
def web_socket():
if request.environ.get('wsgi.websocket'):
ws = request.environ['wsgi.websocket']
obj = ws.receive()
data = json.loads(obj)
# check if logged in
if not database_helper.get_logged_in_user(data['token']):
ws.send(json.dumps({"success": False, "message": "You are not signed in."}))
try:
# if already in active sockets then it must be a page refresh
if data['email'] in active_sockets:
print data['email'] + ' already has active socket'
# save active websocket for logged in email
print 'Setting socket for: ' + data['email']
active_sockets[data['email']] = ws
# listen on socket
# needed to keep socket open
while True:
obj = ws.receive()
if obj == None:
del active_sockets[data['email']]
ws.close()
print 'Socket closed: ' + data['email']
return ''
except WebSocketError as e:
repr(e)
print "WebSocketError"
del active_sockets[data['email']]
return ''
# route should include all parameters except clientEmail and hashedClientData
def verifyToken(route, clientEmail, hashedClientData, post=False):
userData = database_helper.get_logged_in_user_by_email(clientEmail)
if userData == None:
return json.dumps({"success": False, "message": "You are not signed in."})
# step 7
serverToken = userData[1]
# step 8
if post:
dataToHash = '/'+route+"&clientEmail="+clientEmail+'&token='+serverToken
else:
dataToHash = '/'+route+'/'+clientEmail+'/'+serverToken
# encode string to bytes when hashing
server_hash = hashlib.sha256(dataToHash.encode('utf-8')).hexdigest()
print 'dataToHash: ' + dataToHash
print 'Hash from client: ' + server_hash
print 'Hash from server: ' + hashedClientData
return hashedClientData == server_hash
def verifyTokenPOST(route, request):
route += '?'
clientEmail = ''
hashedClientData = ''
for key in request.form:
print key
if key == "clientEmail":
clientEmail = request.form[key]
elif key == "hashedClientData":
hashedClientData = request.form[key]
else:
route += key +'='+request.form[key]+'&'
# removes the last &
route = route[:-1]
print route
return verifyToken(route, clientEmail, hashedClientData, True)
if __name__ == '__main__':
# database_helper.init_db(app)
app.debug = True
bcrypt = Bcrypt(app)
# app.run(host = '0.0.0.0', port = 5000)
http_server = pywsgi.WSGIServer(('', 5000), app, handler_class=WebSocketHandler)
http_server.serve_forever()