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
|
from flask import Flask, render_template, jsonify, request
from flask_cors import CORS
import psycopg2
from psycopg2 import Error
import os
import secrets
import string
app = Flask(__name__)
CORS(app)
class PostgresHandler:
def __init__(self, username: str, password: str, host_name: str, port: int, database: str):
db_params = {
"dbname": database,
"user": username,
"password": password,
"host": host_name,
"port": port
}
self._connection = psycopg2.connect(**db_params)
print("Handler Success")
def create_table(self, name: str, column: str):
cursor = self._connection.cursor()
cursor.execute(f"CREATE TABLE IF NOT EXISTS {name} ({column})")
self._connection.commit()
cursor.close()
def check_row_exists(self, table_name: str, column_name: str, value: str):
cursor = self._connection.cursor()
query = f"SELECT 1 FROM {table_name} WHERE {column_name} = %s"
cursor.execute(query, (value,))
result = cursor.fetchone()
cursor.close()
if result is not None:
return True
else:
return False
def insert_row(self, table_name, column, data):
try:
cursor = self._connection.cursor()
placeholders = ', '.join(['%s'] * len(data))
query = f"INSERT INTO {table_name} ({column}) VALUES ({placeholders})"
cursor.execute(query, data)
self._connection.commit()
print("Data Inserted:", data)
except Error as err:
self._connection.rollback()
print("Error inserting data")
print(err)
if "duplicate key" not in str(err).lower():
return False
return True
def get_rows(self, table_name: str, column: str, value: str):
try:
cursor = self._connection.cursor()
query = f"SELECT * FROM {table_name} WHERE {column} = %s"
cursor.execute(query, (value,))
result = cursor.fetchall()
return result
except Error as e:
self._connection.rollback()
print(f"Failed to fetch row from {table_name} WHERE {column} is {value}")
print(e)
return False
def get_random_row(self, table_name: str, count: int, condition: str = None):
if condition is None:
condition = "1 = 1"
try:
cursor = self._connection.cursor()
query = f"SELECT * FROM {table_name} WHERE {condition} ORDER BY RANDOM() LIMIT {str(count)}"
cursor.execute(query)
result = cursor.fetchall()
return result
except Error as e:
self._connection.rollback()
print(f"Failed to select random rows from {table_name}")
print(e)
return False
def check_health(self):
cursor = self._connection.cursor()
cursor.execute("SELECT 1")
result = cursor.fetchone()
cursor.close()
if result is not None:
return True
else:
return False
def delete_row(self, table_name: str, column: str, value: str):
try:
cursor = self._connection.cursor()
query = f"DELETE FROM {table_name} WHERE {column} = %s"
cursor.execute(query, (value,))
self._connection.commit()
print("Data Deleted:", value)
except Error as e:
self._connection.rollback()
print(f"Failed to delete row from {table_name} WHERE {column} is {value}")
print(e)
return False
return True
def close_connection(self):
self._connection.close()
def create_database_connection():
"""
Creates a database connection using the environment variables
:param: auth_append: str = "" - If you want to use a different set of variables for persisitance of sessions
"""
hostname = os.environ.get("POSTGRES_URL")
user = os.environ.get("POSTGRES_USER")
password = os.environ.get("POSTGRES_PASSWORD")
database = os.environ.get("POSTGRES_DATABASE")
return PostgresHandler(host_name=hostname, username=user, password=password, database=database, port=5432)
def initialize_auth_database():
server = create_database_connection()
server.create_table("sessions", "session_id VARCHAR(255) PRIMARY KEY, answer VARCHAR(1000), created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP")
server.close_connection()
initialize_auth_database()
@app.route('/')
def index_demo():
return render_template('index.html')
@app.route('/server_auth')
def server_side_auth_demo():
return render_template('server_auth.html')
@app.route('/api/affiliation/<org>')
def generate_organization_captcha(org):
server = create_database_connection()
create_session = False
if(request.args.get('auth') == "server"):
create_session = True
if server.check_health() is False:
return jsonify({"error": "Database Connection Failed. Dynamic Affiliation Endpoint requires a PostgreSQL Connection"}), 500
if server.check_row_exists("vtuber_data", "organization", org) is False:
return jsonify({"error": "Organization not found in Database"}), 404
correct_answers= server.get_random_row('vtuber_data', 5, "organization = '"+org+"'")
random_answers = server.get_random_row('vtuber_data', 11)
server.close_connection()
question_data = [{"image": question[3], "name": question[1], "affiliation": question[2], "id": question[0] } for question in correct_answers + random_answers]
if create_session:
server = create_database_connection()
session_id = secrets.token_urlsafe(16)
solutions = []
for question in question_data:
if question['affiliation'] == org:
solutions.append(question['id'])
server.insert_row("sessions", "session_id, answer", (session_id, ",".join(solutions)))
return_data = {
"category": "affiliation",
"title": "Select all the VTuber affiliated with "+org,
"questions": question_data,
"onFail": {
"text": "You got some wrong",
"extra": None
},
"session": session_id
}
else:
for question in question_data:
if question['affiliation'] == org:
question['answer'] = True
else:
question['answer'] = False
return_data = {
"category": "affiliation",
"title": "Select all the VTubers affiliated with "+org,
"questions": question_data,
"onFail": {
"text": "You got some wrong",
"extra": None
}
}
return jsonify(return_data)
@app.route("/api/verify", methods=["POST"])
def verify_answers():
session_id = request.form.get('session')
answer = request.form.get('answer')
server = create_database_connection()
if server.check_health() is False:
return jsonify({"error": "Cannot connect to verification database"}), 500
if server.check_row_exists("sessions", "session_id", session_id) is False:
return jsonify({"error": "Session ID not found"}), 404
correct_answers = server.get_rows("sessions", "session_id", session_id)[0][1].split(",")
server.delete_row("sessions", "session_id", session_id)
server.close_connection()
if answer == ",".join(correct_answers):
return jsonify({"success": True})
else:
return jsonify({"success": False})
if __name__ == "__main__":
app.run(debug=True)
|
