114 lines
4.4 KiB
Python
Executable file
114 lines
4.4 KiB
Python
Executable file
#!/usr/bin/env python3
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import cgi, cgitb
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import re
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import sys, os
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import ldap
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ldap_proto = 'ldap://'
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ldap_server = 'localhost'
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ldap_basedn = 'dc=ldap,dc=freiesnetz,dc=at'
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ldap_userdn = 'ou=Users' +','+ ldap_basedn
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ldap_bind_attr = 'uid'
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cgitb.enable(display=0, logdir='logs/')
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def check_form(formvars, form):
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for varname in formvars:
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if varname not in form.keys():
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return False
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else:
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if type(form[varname].value) is not type(''):
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return None
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return True
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def read_template_file(filename, **vars):
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with open('tpl/' + filename, mode='r', encoding='utf-8') as f:
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template = f.read()
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for key in vars:
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template = template.replace('{$' + key + '}', vars[key])
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return template
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def check_oldpw(accountname, oldpass):
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try:
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conn = ldap.initialize(ldap_proto+ldap_server)
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conn.set_option(ldap.OPT_REFERRALS, 0)
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conn.set_option(ldap.OPT_PROTOCOL_VERSION, 3)
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if conn.simple_bind(ldap_bind_attr+'='+accountname+','+ldap_userdn, oldpass) == True:
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return True
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except ldap.INVALID_CREDENTIALS:
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conn.unbind()
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return False
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return False
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def generate_headers():
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return "Content-Type: text/html; charset=utf-8\n"
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def main():
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main_content = ''
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form = cgi.FieldStorage()
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http_host = os.environ.get('HTTP_HOST')
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if 'submit' in form.keys():
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formvars = ['accountname', 'oldpass', 'newpass', 'newpass2']
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form_ok = check_form(formvars, form)
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if form_ok == True:
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accountname = form['accountname'].value
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accountname = accountname.split("@")[0]
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oldpass = form['oldpass'].value
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newpass = form['newpass'].value
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newpass2 = form['newpass2'].value
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if newpass == newpass2:
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if check_oldpw(accountname, oldpass):
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conn = ldap.initialize(ldap_proto+ldap_server)
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conn.set_option(ldap.OPT_REFERRALS, 0)
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conn.set_option(ldap.OPT_PROTOCOL_VERSION, 3)
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conn.simple_bind(ldap_bind_attr+'='+accountname+','+ldap_userdn, oldpass)
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results = conn.search_s(ldap_basedn, ldap.SCOPE_SUBTREE, '('+ldap_bind_attr+'='+accountname+')', ['dn'])
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conn.unbind()
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for dn in results:
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conn = ldap.initialize(ldap_proto+ldap_server)
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conn.set_option(ldap.OPT_REFERRALS, 0)
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conn.set_option(ldap.OPT_PROTOCOL_VERSION, 3)
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# do a synchronous ldap bind
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conn.simple_bind_s(dn[0], oldpass)
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conn.passwd_s(dn[0], oldpass, newpass)
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conn.unbind_s()
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conn = ldap.initialize(ldap_proto+ldap_server)
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conn.set_option(ldap.OPT_REFERRALS, 0)
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conn.set_option(ldap.OPT_PROTOCOL_VERSION, 3)
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if conn.simple_bind(ldap_bind_attr+'='+accountname+','+ldap_userdn, newpass) == True:
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# We did it
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conn.unbind()
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main_content = read_template_file('success.tpl', http_host=http_host)
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else:
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conn.unbind()
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main_content = read_template_file('fail.tpl', message=cgi.escape(ldap.LDAPError))
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else:
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main_content = read_template_file('fail.tpl', message='User not found or wrong password entered.')
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else:
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main_content = read_template_file('fail.tpl', message='Passwords do not match.')
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elif form_ok == False:
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main_content = read_template_file('fail.tpl', message='All fields are required.')
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else:
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main_content = read_template_file('fail.tpl', message='Invalid data type supplied.')
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else:
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formaction = cgi.escape("https://" + os.environ["HTTP_HOST"] + os.environ["REQUEST_URI"])
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#accountname = os.environ.get('REMOTE_USER')
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accountname = os.environ.get('AUTHENTICATE_UID')
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form = read_template_file('form.tpl', formaction=formaction, accountname=accountname, http_host=http_host)
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main_content = form
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response = generate_headers() + "\n"
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response += read_template_file('main.tpl', main_content=main_content)
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sys.stdout.buffer.write(response.encode('utf-8'))
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if __name__ == "__main__":
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main()
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