HP-UX 64 compilation causing some code to seg fault


 
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Operating Systems HP-UX HP-UX 64 compilation causing some code to seg fault
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Old 06-06-2008
HP-UX 64 compilation causing some code to seg fault

Hello everyone,

Today we are attempting to port some legacy C code to a 64 HP-UX machine at my company and there is kind of a strange error we ran into.

there is a small function they have defined called zgetenv that
accepts a char* and basically just does some null checking and returns
getenv(char*)

the function works fine if i copy it into the file im attempting to recompile and change nothing other than the name of the function.
but when i attempt to call this function from the library that we have recompiled for the 64 bit machine I get a segmentation fault on the
returned value if i call a strlen or strcpy on it.

the strange thing is that this function is being called all over the place in this code and it only gives seg faults in this one module for some reason...

the only possible problem i can think of would be that we havent correctly linked this module to the new 64 bit compilation or something but I dont think that would result in a segmentation fault...

I am really really lost and any help would be much appreciated.

Thanks, Eric
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LWP::Authen::Ntlm(3)					User Contributed Perl Documentation				      LWP::Authen::Ntlm(3)

NAME
LWP::Authen::Ntlm - Library for enabling NTLM authentication (Microsoft) in LWP SYNOPSIS
use LWP::UserAgent; use HTTP::Request::Common; my $url = 'http://www.company.com/protected_page.html'; # Set up the ntlm client and then the base64 encoded ntlm handshake message my $ua = LWP::UserAgent->new(keep_alive=>1); $ua->credentials('www.company.com:80', '', "MyDomain\MyUserCode", 'MyPassword'); $request = GET $url; print "--Performing request now...----------- "; $response = $ua->request($request); print "--Done with request------------------- "; if ($response->is_success) {print "It worked!->" . $response->code . " "} else {print "It didn't work!->" . $response->code . " "} DESCRIPTION
"LWP::Authen::Ntlm" allows LWP to authenticate against servers that are using the NTLM authentication scheme popularized by Microsoft. This type of authentication is common on intranets of Microsoft-centric organizations. The module takes advantage of the Authen::NTLM module by Mark Bush. Since there is also another Authen::NTLM module available from CPAN by Yee Man Chan with an entirely different interface, it is necessary to ensure that you have the correct NTLM module. In addition, there have been problems with incompatibilities between different versions of Mime::Base64, which Bush's Authen::NTLM makes use of. Therefore, it is necessary to ensure that your Mime::Base64 module supports exporting of the encode_base64 and decode_base64 functions. USAGE
The module is used indirectly through LWP, rather than including it directly in your code. The LWP system will invoke the NTLM authentication when it encounters the authentication scheme while attempting to retrieve a URL from a server. In order for the NTLM authentication to work, you must have a few things set up in your code prior to attempting to retrieve the URL: o Enable persistent HTTP connections To do this, pass the "keep_alive=>1" option to the LWP::UserAgent when creating it, like this: my $ua = LWP::UserAgent->new(keep_alive=>1); o Set the credentials on the UserAgent object The credentials must be set like this: $ua->credentials('www.company.com:80', '', "MyDomain\MyUserCode", 'MyPassword'); Note that you cannot use the HTTP::Request object's authorization_basic() method to set the credentials. Note, too, that the 'www.company.com:80' portion only sets credentials on the specified port AND it is case-sensitive (this is due to the way LWP is coded, and has nothing to do with LWP::Authen::Ntlm) AVAILABILITY
General queries regarding LWP should be made to the LWP Mailing List. Questions specific to LWP::Authen::Ntlm can be forwarded to jtillman@bigfoot.com COPYRIGHT
Copyright (c) 2002 James Tillman. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. SEE ALSO
LWP, LWP::UserAgent, lwpcook. perl v5.18.2 2012-01-13 LWP::Authen::Ntlm(3)