[SR-Users] Kamailio LDAP integration

[Saul Waizer]

Hello Reda,

Thank you for your feedback, after some further research and testing I got
the LDAP search working, I am just having one issue with the password
variable:

 3(22487) ERROR: *** cfgtrace: c=[/etc/kamailio/kamailio.cfg] l=755 a=28
n=pv_www_authenticate
 3(22487) ERROR: <core> [sr_module.c:1613]: Could not convert PV to str
 3(22487) ERROR: auth [auth_mod.c:569]: failed to get passwd value

My relevant configuration:

route[AUTH] {
#!ifdef WITH_AUTH
        if (is_method("REGISTER"))
        {
if(is_present_hf("Authorization"))
        {
 # ldap search

           if
(!ldap_search("ldap://demo/ou=demo,dc=mydomain,dc=com?uid,userPassword?"))

{
                switch ($retcode)
                {
                    case -1:
                       # no LDAP entry found
                       sl_send_reply("404", "User Not Found");
                       exit;
                    case -2:
                       # internal error
                       sl_send_reply("500", "Internal server error");
                       exit;
                    default:
                       exit;
                }
            }
ldap_result("uid/$avp(s:username)");
ldap_result("userPassword/$avp(s:password)");
            xlog("L_INFO", "ldap_search: found [$retcode] entries for
(uid=$fU)");
           if (!pv_www_authenticate("$td", "$avp(password)", "0")) {
                 www_challenge("$td", "1");
                 exit;
            }
            sl_send_reply("200", "ok");
            exit;
        } else {
            www_challenge("$td", "1");
            exit;
        }
        } else {

And the error message:

 3(22487) ERROR: *** cfgtrace: c=[/etc/kamailio/kamailio.cfg] l=735 a=26
n=ldap_search
 3(22487) DEBUG: ldap [ldap_api_fn.c:273]: LDAP URL parsed into
session_name [demo], base [ou=demo,dc=mydomain,dc=com], scope [0], filter []
 3(22487) DEBUG: ldap [ldap_api_fn.c:433]: [demo]: performing LDAP search:
dn [ou=demo,dc=mydomain,dc=com], scope [0], filter [(null)], client_timeout
[5000000] usecs
 3(22487) DEBUG: ldap [ldap_api_fn.c:240]: [demo]: [1] LDAP entries found
 3(22487) ERROR: *** cfgtrace: c=[/etc/kamailio/kamailio.cfg] l=752 a=26
n=ldap_result
 3(22487) ERROR: *** cfgtrace: c=[/etc/kamailio/kamailio.cfg] l=753 a=26
n=ldap_result
 3(22487) ERROR: *** cfgtrace: c=[/etc/kamailio/kamailio.cfg] l=754 a=27
n=xlog
 3(22487) INFO: <script>: ldap_search: found [-1] entries for (uid=mmiller)
3(22487) ERROR: *** cfgtrace: c=[/etc/kamailio/kamailio.cfg] l=759 a=17 n=if
 3(22487) ERROR: *** cfgtrace: c=[/etc/kamailio/kamailio.cfg] l=755 a=28
n=pv_www_authenticate
 3(22487) ERROR: <core> [sr_module.c:1613]: Could not convert PV to str
 3(22487) ERROR: auth [auth_mod.c:569]: failed to get passwd value
 3(22487) ERROR: *** cfgtrace: c=[/etc/kamailio/kamailio.cfg] l=756 a=27
n=www_challenge
 3(22487) DEBUG: auth [challenge.c:102]: build_challenge_hf:
realm='ip.of.sip.server'
 3(22487) DEBUG: auth [challenge.c:113]: build_challenge_hf: qop='auth'
 3(22487) DEBUG: auth [challenge.c:244]: auth: 'WWW-Authenticate: Digest
realm="ip.of.sip.server", nonce="T6P5yU+j+J23OE93mPaektZpJszGpt/l",
qop="auth"

Any help is greatly appreciated!
Thanks



On Thu, May 3, 2012 at 4:22 PM, Reda Aouad <reda.aouad at gmail.com> wrote:

> Hi Saul,
>
> username_avp_spec was previously a AUTH module parameter to specify a
> variable that was passed to pv_www_authorize implicitly (the function
> doesn't take arguments). Now you should use the new pv_www_authenticate
> and pass to it explicitly the credentials as arguments.
>
> So forget about username_avp_spec since it doesn't exist as module param
> anymore (this is why you are getting the error). Store the result of
> ldap_search in the avps as in the tutorial using ldap_result, and pass them
> to pv_www_authenticate as parameters. pv_www_authenticate takes the
> following arguments:
> - realm: which you can get from "to domain" using $td
> - password: $avp(s:password)
> - flag: set it to 0 as a first test
>
> example:
> pv_www_authorize("$td", "$avp(s:password)", 0)
>
> This function takes the username from the authentication header, so no
> need to pass it anymore as argument.
>
> Reda
>
>
>
> On Thu, May 3, 2012 at 8:47 PM, Saul Waizer <saulwaizer at gmail.com> wrote:
>
>> Hello List,
>>
>> I am trying to incorporate an existing LDAP directory with our Kamailio
>> installation for SIP authentication. A good friend suggested to checkout
>> this tutorial and adapt it to fit my needs (and current version)
>>
>> http://www.kamailio.org/dokuwiki/doku.php/tutorials:openser-auth-ldap
>>
>> It seems like the AUTH module does not contain the function username_spec
>> (which I believe is not used anymore) but the username_avp_spec which is
>> not part of the AUTH module but the H350 module
>> http://kamailio.org/docs/modules/3.2.x/modules_k/h350.html
>>
>> I enabled the h350 module and tried setting the params as described in
>> the documentation:
>>
>> modparam("auth", "username_spec", "$avp(s:username)")
>> modparam("auth", "password_spec", "$avp(s:password)")
>> modparam("auth", "calculate_ha1", 1)
>>
>> I got the following error after checking the configuration:
>>
>> ERROR: <core> [modparam.c:151]: set_mod_param_regex: parameter
>> <username_spec> not found in module <auth>
>>
>> I am running kamailio 3.2.3 (i386/linux) Ubuntu
>>
>> Thank you in advance!
>>
>>
>>
>>
>>
>>
>> _______________________________________________
>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
>> sr-users at lists.sip-router.org
>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>
>>
>
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