Probleme mit sichere Bindung zu Active Directory mit PHP

Scheine ich unfähig zu sein, um php zu benutzen, um sichere Bindung zu Active Directory. Unverschlüsselte verbindungen funktionieren. Mit anderen clients sind in der Lage, sicher zu binden, z.B. den Anschluss mit LDAPAdmin über SSL. Was ist hier das problem? Gibt es einige LDAP-SSL-Modul, das mir fehlt? Wie sicher binden an den server mit php?

Bemerkte ich aus phpinfo() dass LOCKE hat die Unterstützung für ldap - /ldaps - was ist ein gutes Beispiel, die Verwendung dieser, um eine sichere Bindung in php? Ist das eine praktikable Lösung?

phpinfo();

ldap
LDAP Support    enabled
RCS Version     $Id: ldap.c 293036 2010-01-03 09:23:27Z sebastian $
Total Links     0/unlimited
API Version     3001
Vendor Name     OpenLDAP
Vendor Version  20421
SASL Support    Enabled 

Versucht hat, eine Bindung an ein Active Directory server mit PHP Version 5.3.2-1ubuntu4.7 von Ubuntu 10.04 repo

$username = 'user';
$password = 'passwd';
$account_suffix = '@example.com';
$hostnameSSL = 'ldaps://ldap.example.com:636';
$hostnameTLS = 'ldap.example.com';
$portTLS = 389;

ldap_set_option(NULL, LDAP_OPT_DEBUG_LEVEL, 7);

//Attempting fix from http://www.php.net/manual/en/ref.ldap.php#77553
putenv('LDAPTLS_REQCERT=never');

####################
# SSL bind attempt #
####################
//Attempting syntax from http://www.php.net/manual/en/function.ldap-bind.php#101445
$con =  ldap_connect($hostnameSSL);
if (!is_resource($con)) trigger_error("Unable to connect to $hostnameSSL",E_USER_WARNING);

//Options from http://www.php.net/manual/en/ref.ldap.php#73191
if (!ldap_set_option($con, LDAP_OPT_PROTOCOL_VERSION, 3))
{
    trigger_error("Failed to set LDAP Protocol version to 3, TLS not supported",E_USER_WARNING);
}
ldap_set_option($con, LDAP_OPT_REFERRALS, 0);

if (ldap_bind($con,$username . $account_suffix, $password)) die('All went well using SSL');
ldap_close($con);

####################
# TLS bind attempt #
####################
$con =  ldap_connect($hostnameTLS,$portTLS);
ldap_set_option($con, LDAP_OPT_PROTOCOL_VERSION, 3);
ldap_set_option($con, LDAP_OPT_REFERRALS, 0);
$encrypted = (ldap_start_tls($con));
if ($encrypted) ldap_bind($con,$username . $account_suffix, $password); //Unecrypted works, but don't want logins sent in cleartext
ldap_close($con);

#####################
# SASL bind attempt #
#####################
$con =  ldap_connect($hostnameTLS,$portTLS);
ldap_set_option($con, LDAP_OPT_PROTOCOL_VERSION, 3);
ldap_set_option($con, LDAP_OPT_REFERRALS, 0);
ldap_sasl_bind($con, NULL, $password, 'DIGEST-MD5', NULL, $username. $account_suffix);
ldap_close($con);

Alle der oben genannten ausfällt. Fehler aus der log:

ldap_create
ldap_url_parse_ext(ldaps://ldap.example.com:636)
ldap_bind_s
ldap_simple_bind_s
ldap_sasl_bind_s
ldap_sasl_bind
ldap_send_initial_request
ldap_new_connection 1 1 0
ldap_int_open_connection
ldap_connect_to_host: TCP ldap.example.com:636
ldap_new_socket: 27
ldap_prepare_socket: 27
ldap_connect_to_host: Trying 1.1.1.1:636
ldap_pvt_connect: fd: 27 tm: -1 async: 0
ldap_open_defconn: successful
ldap_send_server_request
ldap_result ld 0x215380c0 msgid 1
wait4msg ld 0x215380c0 msgid 1 (infinite timeout)
wait4msg continue ld 0x215380c0 msgid 1 all 1
** ld 0x215380c0 Connections:
* host: ldap.example.com  port: 636  (default)
  refcnt: 2  status: Connected
  last used: Thu Mar 10 11:15:53 2011


** ld 0x215380c0 Outstanding Requests:
 * msgid 1,  origid 1, status InProgress
   outstanding referrals 0, parent count 0
  ld 0x215380c0 request count 1 (abandoned 0)
** ld 0x215380c0 Response Queue:
   Empty
  ld 0x215380c0 response count 0
ldap_chkResponseList ld 0x215380c0 msgid 1 all 1
ldap_chkResponseList returns ld 0x215380c0 NULL
ldap_int_select
read1msg: ld 0x215380c0 msgid 1 all 1
ldap_err2string
[Thu Mar 10 11:15:53 2011] [error] [client ::1] PHP Warning:  ldap_bind() [<a href='function.ldap-bind'>function.ldap-bind</a>]: Unable to bind to server: Can't contact LDAP server in /..test.php on line 28
[Thu Mar 10 11:15:53 2011] [error] [client ::1] PHP Stack trace:
[Thu Mar 10 11:15:53 2011] [error] [client ::1] PHP   1. {main}() /..test.php:0
[Thu Mar 10 11:15:53 2011] [error] [client ::1] PHP   2. ldap_bind() /..test.php:28
ldap_free_request (origid 1, msgid 1)
ldap_free_connection 1 1
ldap_free_connection: actually freed
ldap_create
ldap_err2string
[Thu Mar 10 11:15:53 2011] [error] [client ::1] PHP Warning:  ldap_start_tls() [<a href='function.ldap-start-tls'>function.ldap-start-tls</a>]: Unable to start TLS: Not Supported in /..test.php on line 37
[Thu Mar 10 11:15:53 2011] [error] [client ::1] PHP Stack trace:
[Thu Mar 10 11:15:53 2011] [error] [client ::1] PHP   1. {main}() /..test.php:0
[Thu Mar 10 11:15:53 2011] [error] [client ::1] PHP   2. ldap_start_tls() /..test.php:37
ldap_create
ldap_sasl_interactive_bind_s: user selected: DIGEST-MD5
ldap_err2string
[Thu Mar 10 11:15:53 2011] [error] [client ::1] PHP Warning:  ldap_sasl_bind() [<a href='function.ldap-sasl-bind'>function.ldap-sasl-bind</a>]: Unable to bind to server: Not Supported in /..test.php on line 47
[Thu Mar 10 11:15:53 2011] [error] [client ::1] PHP Stack trace:
[Thu Mar 10 11:15:53 2011] [error] [client ::1] PHP   1. {main}() /..test.php:0
[Thu Mar 10 11:15:53 2011] [error] [client ::1] PHP   2. ldap_sasl_bind() /..test.php:47

Blick auf ssl Antwort:

>> openssl s_client -connect my.example.com:636 -prexit

(...)
SSL handshake has read 5732 bytes and written 443 bytes
---
New, TLSv1/SSLv3, Cipher is RC4-MD5
Server public key is 2048 bit
Secure Renegotiation IS supported
Compression: NONE
Expansion: NONE
SSL-Session:
    Protocol  : TLSv1
    Cipher    : RC4-MD5
    Session-ID: 111111111111111111111111
    Session-ID-ctx: 
    Master-Key: AAAAAAAAAAAAAAAAAAAAA
    Key-Arg   : None
    Start Time: 1299071105
    Timeout   : 300 (sec)
    Verify return code: 20 (unable to get local issuer certificate)

Ergebnisse von 'strace php test.php' :

    write(2, "  refcnt: 2  status: Connected\n", 31  refcnt: 2  status: Connected
    ) = 31
    write(2, "  last used: Tue Mar 15 10:59:19"..., 39  last used: Tue Mar 15 10:59:19 2011

    ) = 39
    write(2, "\n", 1
    )                       = 1
    write(2, "** ld 0x954e0b8 Outstanding Requ"..., 38** ld 0x954e0b8 Outstanding Requests:
    ) = 38
    write(2, " * msgid 1,  origid 1, status In"..., 41 * msgid 1,  origid 1, status InProgress
    ) = 41
    write(2, "   outstanding referrals 0, pare"..., 43   outstanding referrals 0, parent count 0
    ) = 43
    write(2, "  ld 0x954e0b8 request count 1 ("..., 45  ld 0x954e0b8 request count 1 (abandoned 0)
    ) = 45
    write(2, "** ld 0x954e0b8 Response Queue:\n", 32** ld 0x954e0b8 Response Queue:
    ) = 32
    write(2, "   Empty\n", 9   Empty
    )               = 9
    write(2, "  ld 0x954e0b8 response count 0\n", 32  ld 0x954e0b8 response count 0
    ) = 32
    write(2, "ldap_chkResponseList ld 0x954e0b"..., 48ldap_chkResponseList ld 0x954e0b8 msgid 1 all 1
    ) = 48
    write(2, "ldap_chkResponseList returns ld "..., 47ldap_chkResponseList returns ld 0x954e0b8 NULL
    ) = 47
    write(2, "ldap_int_select\n", 16ldap_int_select
    )       = 16
    poll([{fd=3, events=POLLIN|POLLPRI|POLLERR|POLLHUP}], 1, -1) = 1 ([{fd=3, revents=POLLIN}])
    write(2, "read1msg: ld 0x954e0b8 msgid 1 a"..., 37read1msg: ld 0x954e0b8 msgid 1 all 1
    ) = 37
    read(3, "", 8)                          = 0
    write(2, "ldap_err2string\n", 16ldap_err2string
    )       = 16
    write(2, "PHP Warning:  ldap_bind(): Unabl"..., 158PHP Warning:  ldap_bind(): Unable to bind to server: Can't contact LDAP server in

Und ich habe auch den /etc/ldap.conf fix mit "TLS_REQCERT never" - auch wenn dieses Update ist für eine andere Fehler gibt, die eine ziemlich eindeutige Fehlermeldung.

InformationsquelleAutor Jon Skarpeteig | 2011-03-10