125 lines
3.2 KiB
Python
125 lines
3.2 KiB
Python
import re
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import sqlite3
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import cherrypy
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import uuid
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import smtplib
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def isinsecurepassword(password):
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if(len(password) < 8):
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return True
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if(len(set(password)) < 4):
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return True
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return False
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def simplehash(password):
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"""
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XXX: ONLY FOR DEMO PURPOSES!
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"""
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result = 0xff
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for i in password:
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result ^= ord(i)
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return result
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class InputValidationServer(object):
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def __init__(self, db):
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self._db_name = db
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self._rzid_pattern = re.compile("[a-z]{3}[0-9]{5}")
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self._email_password = "foobar"
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self._email_user = "dummy@daknuett.eu"
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@cherrypy.expose
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def index(self):
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return '''
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<html>
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<head>
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<title>Input Validation Form</title>
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</head>
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<body>
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<form action="submit">
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<p>
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password: <input type="password" name="password"/>
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</p>
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<p>
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email: <input type="email" name="email"/>
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</p>
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<p>
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RZ Kennung: <input type="text" name="rzid"/>
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</p>
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<input type=submit name="submit" value="Submit"/>
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</form
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</body>
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</html>'''
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@cherrypy.expose
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def submit(self, password, email, rzid, submit):
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if(not self._rzid_pattern.match(rzid)):
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return '''<html><head><title>Error</title></head><body><h1>Error: invalid RZ Kennung.</h1></body></html>'''
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confirmation_id = str(uuid.uuid4())
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db = sqlite3.connect(self._db_name)
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cursor = db.cursor()
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cursor.execute("SELECT COUNT(rzid) FROM users WHERE rzid=?", (rzid,))
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if(cursor.fetchone()[0]):
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db.close()
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return '''<html><head><title>Error</title></head><body><h1>Error: RZ Kennung in use.</h1></body></html>'''
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cursor.execute("INSERT INTO users(rzid, email, password, confirmation_id) VALUES(?, ?, ?, ?)",
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(rzid, email, simplehash(password), confirmation_id))
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db.commit()
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smtp = smtplib.SMTP("daknuett.eu", 587)
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smtp.ehlo()
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smtp.starttls()
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smtp.login(self._email_user, self._email_password)
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smtp.sendmail(self._email_user, [email],
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'\r\n'.join(['To: %s' % email
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, 'From: %s' % self._email_user
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, 'Subject: %s' % "confirm your email address"
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, "\n\r", "http://localhost:8080/confirm?confirmation_id={}".format(confirmation_id)]))
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smtp.close()
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db.close()
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if(isinsecurepassword(password)):
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return '''<html><head><title>OK</title></head><body><h1>Check your mailbox for the confirmation email</h1>
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<p>Also your password is pretty unsecure</p></body></html>'''
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return '''<html><head><title>OK</title></head><body><h1>Check your mailbox for the confirmation email</h1></body></html>'''
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@cherrypy.expose
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def confirm(self, confirmation_id):
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db = sqlite3.connect(self._db_name)
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cursor = db.cursor()
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cursor.execute("SELECT rzid FROM users WHERE confirmation_id=?", (confirmation_id,))
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try:
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rzid = cursor.fetchone()[0]
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except:
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return '''<html><head><title>Error</title></head><body><h1>Error: unknown confirmation ID</h1></body></html>'''
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cursor.execute("UPDATE users SET confirmation_id='' WHERE rzid=?", (rzid,))
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return '''<html><head><title>OK</title></head><body><h1>Your account is activated.</h1></body></html>'''
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with open("example.db", "w"):
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pass
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db = sqlite3.connect("example.db")
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db.cursor().execute("CREATE TABLE users(rzid TEXT, email TEXT, password INT, confirmation_id TEXT)")
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db.commit()
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db.close()
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app = InputValidationServer("example.db")
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cherrypy.quickstart(app)
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