[sr-dev] git:sr_3.0: ldap(k): fix ldapsearch with empty filter

Module: sip-router Branch: sr_3.0 Commit: 42c966bb0339e322c9b6938a9c35e9209785a1bb URL: http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=42c966b… Author: Henning Westerholt &lt;henning.westerholt(a)1und1.de&gt; Committer: Andrei Pelinescu-Onciul &lt;andrei(a)iptel.org&gt; Date: Thu Jan 21 19:26:08 2010 +0100 ldap(k): fix ldapsearch with empty filter * fix ldapsearch with empty filter * When in routing script ldapsearch() is executed on LDAP query URL without the ‘filter’ section, request forming fails: ERROR: ldap [ldap_api_fn.c:193]: vsnprintf failed * Workaround for administrators can be filling filter section with ‘(objectclass=*)’, what is anyway substituted by ldap library to request in case filter parameter set to NULL. * Please notice that va_end() call is missing in original code. * Patch FS#23 from andrey dot utkin at wildix dot com (cherry picked from commit 73655cc83851f1f406ce23b8d6130632d731ef2d) --- modules_k/ldap/ldap_api_fn.c | 44 +++++++++++++++++++++++------------------ 1 files changed, 25 insertions(+), 19 deletions(-) diff --git a/modules_k/ldap/ldap_api_fn.c b/modules_k/ldap/ldap_api_fn.c index c2176fc..20fd869 100644 --- a/modules_k/ldap/ldap_api_fn.c +++ b/modules_k/ldap/ldap_api_fn.c @@ -158,6 +158,7 @@ int ldap_params_search( { int rc; static char filter_str[LDAP_MAX_FILTER_LEN]; + char *filter_ptr = NULL; va_list filter_vars; /* @@ -174,24 +175,29 @@ int ldap_params_search( return -1; } - /* - * vsnprintf - */ - va_start(filter_vars, _filter); - rc = vsnprintf(filter_str, (size_t)LDAP_MAX_FILTER_LEN, _filter, - filter_vars); - if (rc >= LDAP_MAX_FILTER_LEN) - { - LM_ERR( "[%s]: filter string too long (len [%d], max len [%d])\n", - _lds_name, - rc, - LDAP_MAX_FILTER_LEN); - return -1; - } - else if (rc < 0) - { - LM_ERR("vsnprintf failed\n"); - return -1; + if (_filter) { + /* + * vsnprintf + */ + va_start(filter_vars, _filter); + rc = vsnprintf(filter_str, (size_t)LDAP_MAX_FILTER_LEN, _filter, + filter_vars); + va_end(filter_vars); + + if (rc >= LDAP_MAX_FILTER_LEN) + { + LM_ERR( "[%s]: filter string too long (len [%d], max len [%d])\n", + _lds_name, + rc, + LDAP_MAX_FILTER_LEN); + return -1; + } + else if (rc < 0) + { + LM_ERR("vsnprintf failed\n"); + return -1; + } + filter_ptr = filter_str; } /* @@ -200,7 +206,7 @@ int ldap_params_search( if (lds_search(_lds_name, _dn, _scope, - filter_str, + filter_ptr, _attrs, NULL, _ld_result_count,