+#!/usr/bin/env python2
+from __future__ import print_function
+import os, cgi, MySQLdb, subprocess, time
+
+# settings
+DB_NAME = 'vmail'
+DB_USER = 'vmail'
+DB_PW = '{{postfix.dovecot.mysql_password}}'
+
+# DB stuff
+db = MySQLdb.connect(user=DB_USER, passwd=DB_PW, db=DB_NAME, charset='utf8')
+
+def db_execute(query, args):
+ cursor = db.cursor(MySQLdb.cursors.DictCursor)
+ if len(args) == 1 and isinstance(args[0], dict): args = args[0] # einzelnes dict weiterreichen
+ cursor.execute(query, args)
+ return cursor
+
+def db_fetch_one_row(query, *args):
+ cursor = db_execute(query, args)
+ result = cursor.fetchone()
+ if cursor.fetchone() is not None:
+ raise Exception("Found more than one result, only one was expected")
+ cursor.close()
+ return result
+
+def db_run(query, *args):
+ cursor = db_execute(query, args)
+ cursor.close()
+
+def get_user(name):
+ return db_fetch_one_row('SELECT * FROM users WHERE username=%s', name)
+
+def change_user_pw(name, hash):
+ db_run('UPDATE users SET password=%s WHERE username=%s', hash, name)
+
+def change_user_active(name, active):
+ db_run('UPDATE users SET active=%s WHERE username=%s', int(active), name)
+
+# interaction with dbadm pw
+def compare_pw(hash, plain):
+ try:
+ subprocess.check_output(["doveadm", "pw", "-t", hash, "-p", plain])
+ return True
+ except subprocess.CalledProcessError:
+ return False
+
+def gen_hash(plain):
+ return subprocess.check_output(["doveadm", "pw", "-s", "SHA512-CRYPT", "-r", str(64*1024), "-p", plain]).decode('utf-8').strip()
+
+# the core action
+def act(user, oldpw, newpw1, newpw2):
+ if user is None and oldpw is None and newpw1 is None and newpw2 is None:
+ return
+ if user is None or oldpw is None or newpw1 is None or newpw2 is None:
+ return "<b>Error</b>: You have to fill all the fields."
+ curdata = get_user(user)
+ if curdata is None:
+ return "<b>Error</b>: User not found."
+ if len(newpw1) < 8:
+ return "<b>Error</b>: Password must be at least 8 characters long."
+ if newpw1 != newpw2:
+ return "<b>Error</b>: New passwords do not match."
+ # slow down brute-force attacks
+ time.sleep(2.5)
+ # now go on
+ if not compare_pw(curdata['password'], oldpw):
+ return "<b>Error</b>: Old PW is wrong."
+ new_hash = gen_hash(newpw1)
+ change_user_pw(user, new_hash)
+ # potentially enable this user
+ if curdata['active'] < 0:
+ change_user_active(user, -curdata['active'])
+ return "Password successfully changed."
+
+# print headers
+print("Content-Type: text/html")
+print()
+
+# print document header
+print("<!DOCTYPE html>")
+print("<html><head>")
+print(" <meta charset='utf-8'>")
+print(" <title>User PW change</title>")
+print(" <style type='text/css'> th { text-align: right; } </style>")
+print("</head><body>")
+
+# do stuff
+form = cgi.FieldStorage()
+msg = act(form.getfirst('user'), form.getfirst('oldpw'), form.getfirst('newpw1'), form.getfirst('newpw2'))
+if msg is not None:
+ print("<p>{}</p>".format(msg))
+
+# print form
+print(" <form action='changepw' method='post'><table>")
+print(" <tr><th>Username: </th><td><input type='text' name='user' placeholder='user@domain'></td>")
+print(" <tr><th>Old Password: </th><td><input type='password' name='oldpw'></td>")
+print(" <tr><th>New Password: </th><td><input type='password' name='newpw1'></td>")
+print(" <tr><th>New Password (confirmation): </th><td><input type='password' name='newpw2'></td>")
+print(" <tr><th></th><td><input type='submit' value='Change Password'></td></tr>")
+print(" </table></form>")
+print("</body></html>")
projects / ansible.git / commitdiff