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Bug #5982 ldap_add and ldap_modify crash PHP
Submitted: 2000-08-05 05:35 UTC Modified: 2000-08-11 05:20 UTC
From: kurtkrueger at usa dot net Assigned: sniper (profile)
Status: Closed Package: LDAP related
PHP Version: 4.0.1pl2 OS: Mandrake Linux 7.0
Private report: No CVE-ID: None
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From: kurtkrueger at usa dot net
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 [2000-08-05 05:35 UTC] kurtkrueger at usa dot net
PROBLEM:

I have a page which accepts user input and a page which processes that input.  The input goes into fields of an associative array.  Next, the ldap_modify (or ldap_add) function is called:

ldap_modify ($connection, $dn, $inputArray)

PHP crashes immediately.  This bug is new to PHP4 because the same code performed fine under PHP3.

WORKAROUND:

I have found that if I append a zero-length string to each field of the array, the LDAP functions work perfectly.  For instance:

$inputArray[department] = $txtDepartment . "";

SUPPORTING INFORMATION:

I am running Open LDAP, slapd version:

slapd 1.2.7-Release (Mon Sep 20 22:37:14 CDT 1999)

Here is a backtrace:

Program received signal SIGSEGV, Segmentation fault.
0x403602b1 in php_ldap_do_modify (ht=3, return_value=0x8125d24, this_ptr=0x0,
return_value_used=1, oper=2) at ldap.c:1154
1154
ldap_mods[i]->mod_values[0][(*value)->value.str.len] = '\0';
(gdb) bt
#0  0x403602b1 in php_ldap_do_modify (ht=3, return_value=0x8125d24,
this_ptr=0x0, return_value_used=1, oper=2)
    at ldap.c:1154
#1  0x4036059b in php_if_ldap_modify (ht=3, return_value=0x8125d24,
this_ptr=0x0, return_value_used=1) at ldap.c:1209
#2  0x4032f9f6 in execute (op_array=0x8120850) at ./zend_execute.c:1558
#3  0x4032fc43 in execute (op_array=0x80ba99c) at ./zend_execute.c:1598
#4  0x4034cbc1 in php_execute_script (primary_file=0xbffff65c) at main.c:1157
#5  0x40349399 in apache_php_module_main (r=0x80f574c, fd=19,
display_source_mode=0) at sapi_apache.c:93
#6  0x40349da4 in send_php (r=0x80f574c, display_source_mode=0,
    filename=0x80f630c "/www/htdocs/ldap_mail/process_record.php") at mod_php4.c:515
#7  0x40349df0 in send_parsed_php (r=0x80f574c) at mod_php4.c:527
#8  0x80547d3 in ap_invoke_handler ()
#9  0x8068429 in process_request_internal ()
#10 0x806848c in ap_process_request ()
#11 0x805fc4e in child_main ()
#12 0x805fde8 in make_child ()
#13 0x805ff53 in startup_children ()
#14 0x8060596 in standalone_main ()
#15 0x8060d13 in main ()
#16 0x400819ee in __libc_start_main (main=0x80609e0 <main>, argc=2,
argv=0xbffff844, init=0x804e814 <_init>, fini=0x8095a4c <_fini>, rtld_fini=0x4000a570 <_dl_fini>,
stack_end=0xbffff83c) at ../sysdeps/generic/libc-start.c:90

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 [2000-08-06 03:21 UTC] sniper@php.net
Please try latest CVS. This should be fixed there.

--Jani
 [2000-08-11 05:20 UTC] sniper@php.net
Works for me (latest CVS). Closed.

--Jani
 
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