Re: program segfaults on ldap_get_values/ldap_get_values_len

[Philip Guenther <guenther+ldapsoft@sendmail.com>]

On Sat, 8 Mar 2008, Brian Hechinger wrote:
...
> I can bind without issue, but I need to retrieve the values held by a
> specific multi valued attribute, and that's where I'm having issues.
>
> I was using ldap_get_values() and all the other deprecated functions, but
> have recently converted my code to only use what's available in 2.4.x
>
> Sadly, that didn't fix the problem, it still happens.
>
> This line:
>
> attr_values = ldap_get_values_len(ldap_conn, entry, attr);
>
> Segfaults with SIGABRT and prints this to stderr:
>
> Assertion failed: (LBER_VALID( ber )), function ber_scanf, file 
> decode.c, line 779.

You passed an invalid 'entry' value to ldap_get_values_len().  Where did 
that value come from?  (i.e., what's the code that leads up to that call?) 
Presumably there was a search that ended with an ldap_result() call. 
What sort of checking of the result of ldap_result() did you perform to 
handle errors and timeouts?


Philip Guenther