It seems Openwebmail is using Perl-Compress-Zlib from rpmforce, but in Centos this is obsoleted by Perl-IO-Compress, and there is a conflict.

This I got when I tried to install the rpmforce package:

[root@mail log]# yum install perl-Compress-Zlib Loaded plugins: fastestmirror, installonlyn Loading mirror speeds from cached hostfile * addons: ftp.funet.fi * base: ftp.funet.fi * extras: ftp.funet.fi * rpmforge: wftp.tu-chemnitz.de * updates: ftp.funet.fi Setting up Install Process Package perl-Compress-Zlib is obsoleted by perl-IO-Compress, trying to install perl-IO-Compress-2.030-2.el5.rf.noarch instead Package perl-IO-Compress-2.030-2.el5.rf.noarch already installed and latest version Nothing to do

- Jussi

On 12.10.2010 9.38, Jussi Hirvi wrote:

Ok, more information. I have Openwebmail 2.52. I tried to install 2.53 with yum, and get the following. This points to what the conflict is about. But I still don't know how to fix this.

• Jussi

Installing: openwebmail i386 2.53-3 openwebmail 2.4 M Installing for dependencies: openwebmail-data i386 2.53-3 openwebmail 7.3 M perl-Compress-Zlib noarch 2.015-1.el5.rf rpmforge 34 k perl-suidperl i386 4:5.8.8-32.el5_5.2 updates 62 k

Transaction Summary

Install 4 Package(s) Upgrade 0 Package(s)

Total size: 9.9 M Total download size: 62 k Is this ok [y/N]: y Downloading Packages: perl-suidperl-5.8.8-32.el5_5.2.i386.rpm | 62 kB 00:00 Running rpm_check_debug Running Transaction Test Finished Transaction Test

Transaction Check Error: file /usr/lib/perl5/vendor_perl/5.8.8/Compress/Zlib.pm from install of perl-Compress-Zlib-2.015-1.el5.rf.noarch conflicts with file from package perl-IO-Compress-2.030-2.el5.rf.noarch file /usr/share/man/man3/Compress::Zlib.3pm.gz from install of perl-Compress-Zlib-2.015-1.el5.rf.noarch conflicts with file from package perl-IO-Compress-2.030-2.el5.rf.noarch

Transaction Check Error: file /usr/lib/perl5/vendor_perl/5.8.8/Compress/Zlib.pm from install of perl-Compress-Zlib-2.015-1.el5.rf.noarch conflicts with file from package perl-IO-Compress-2.030-2.el5.rf.noarch file /usr/share/man/man3/Compress::Zlib.3pm.gz from install of perl-Compress-Zlib-2.015-1.el5.rf.noarch conflicts with file from package perl-IO-Compress-2.030-2.el5.rf.noarch

Not sure if this will help... Have you tried updating perl-IO-Compress?

Dne 12.10.2010 9:03, Jussi Hirvi napsal(a):

On 12.10.2010 9.52, Sean Hart wrote:

...

Not sure if this will help... Have you tried updating perl-IO-Compress?

It is up-to-date. The whole problem started when I did "yum update" yesterday.

• Jussi

Try removing perl-IO-Compress-Zlib and install only perl-IO-Compress and perl-Compress-Raw-Zlib. DH

Ok, I found a fix. I had to learn a little perl for that. :-)

The offending file was /var/www/cgi-bin/openwebmail/shared/ow-shared.pm

In that file, at the top of subroutine httpprint:

# ADDED: use IO::Compress::Gzip qw(gzip $GzipError) ;

Further down in that subroutine, around line 1175:

# REMOVED: my $zhtml=Compress::Zlib::memGzip(join('',@{$r_htmls})); # ADDED my $zhtml; my $input = join('',@{$r_htmls}); gzip $input => $zhtml or die "gzip failed: $GzipError\n";

I will do the same fix to the other occurrences, and trust that it will work!!

Many thanks to all, especially David!

- Jussi

Dne 14.10.2010 8:17, Jussi Hirvi napsal(a):

locate Zlib.pm

C5 x86_64 /usr/lib/perl5/vendor_perl/5.8.8/Compress/Zlib.pm /usr/lib/perl5/vendor_perl/5.8.8/IO/Zlib.pm /usr/lib64/perl5/vendor_perl/5.8.8/x86_64-linux-thread-multi/Compress/Raw/Zlib.pm

locate Zlib.pm | xargs rpm -qf perl-IO-Compress-2.030-2.el5.rf perl-IO-Zlib-1.10-1.el5.rf perl-Compress-Raw-Zlib-2.030-1.el5.rf

C4 i386 /usr/lib/perl5/vendor_perl/5.8.5/i386-linux-thread-multi/Compress/Raw/Zlib.pm /usr/lib/perl5/vendor_perl/5.8.5/IO/Zlib.pm /usr/lib/perl5/vendor_perl/5.8.5/Compress/Zlib.pm

locate Zlib.pm | xargs rpm -qf perl-Compress-Raw-Zlib-2.024-1.el4.rf perl-IO-Zlib-1.10-1.el4.rf perl-IO-Compress-2.024-1.el4.rf

DH

Thanks. Too bad I cannot speak Perl.

Here's the info:

[root@mail]# uname -a Linux mail.greenspot.fi 2.6.18-194.11.4.el5 #1 SMP Tue Sep 21 05:09:20 EDT 2010 i686 i686 i386 GNU/Linux

[root@mail]# rpm -q perl-Compress-Raw-Zlib perl-IO-Compress perl-IO-Compress-Zlib perl perl-Compress-Raw-Zlib-2.030-1.el5.rf perl-IO-Compress-2.030-2.el5.rf package perl-IO-Compress-Zlib is not installed perl-5.8.8-32.el5_5.2 [root@mail tiina]#

This could be caused by something in Openwebmail. I found info that whenever memGzip is not successful, it returns undef - this probabvly means "undefined subroutine", which is what Openwebmail now tells me.

http://search.cpan.org/~pmqs/IO-Compress-2.030/lib/Compress/Zlib.pm

Maybe this will help - here is the offending Openwebmail function:

sub httpprint { my ($r_headers, $r_htmls)=@_; if (is_http_compression_enabled()) { my $zhtml=Compress::Zlib::memGzip(join('',@{$r_htmls})); if ($zhtml ne '') { print httpheader(@{$r_headers}, '-Content-Encoding'=>'gzip', '-Vary'=>'Accept-Encoding', '-Content-Length'=>length($zhtml)), $zhtml; return; } } my $len; foreach (@{$r_htmls}) { $len+=length($_); } print httpheader(@{$r_headers}, '-Content-Length'=>$len), @{$r_htmls}; return; }

- Jussi

On 12.10.2010 10.01, David Hrbáč wrote:

Dne 12.10.2010 8:28, Jussi Hirvi napsal(a):

...

After system update yesterday, Openwebmail now gives an error:

...

Undefined subroutine&Compress::Zlib::memGzip called at /var/www/cgi-bin/openwebmail/shares/ow-shared.pl line 1175.

I tried to do

perl -MCPAN -e shell install Compress::Zlib

But it says Compress::Zlib is up-to-date. What do to?? I cannot find an answer by googling.

• Jussi

Hi, what's the uname -a and rpm -q perl-Compress-Raw-Zlib perl-IO-Compress perl-IO-Compress-Zlib perl.

I have just created testing pl script with Compress::Zlib::memGzip running smoothly. DH _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos

On 12.10.2010 10.29, David Hrbáč wrote:

1. Does it include:

use Compress::Zlib; 2) What repo are you using for Openwebmail? 3) You can always use temp hack - disbale gzip - "is_http_compression_enabled()"....

1) No, this file, /var/www/cgi-bin/openwebmail/shares/ow-shared.pl does not include use Compress::Zlib. There are a lot of "use" declarations, some referring to other files...

2) the repo was openwebmail

3) If you want to take a look, see the archive at

http://www.greenspot.fi/postilaatikko/

It is a zipped version of /var/www/cgi-bin/openwebmail

Could you give a syntax example of > is_http_compression_enabled()

Would this for example be right:

my $zhtml=is_http_compression_enabled(Compress::Zlib::memGzip(join('',@{$r_htmls})));

- Jussi