Re: question on security

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi, Charles,

Thank you for the response. I am sorry that I didn't make it clear. Here is it:

I use Apache 2; there is no error in its log file.

The script doesn't need to write to files, it just retrieve some web page, say,
http://www.yahoo.com/index.html, then extract some data from it and show it.

The following simple script illustrates this:

============ perl script ===============

#!/usr/bin/perl

use LWP::UserAgent;

my $ua = LWP::UserAgent->new;
$ua->timeout(10);
my $resp = $ua->get("http://www.yahoo.com/";);

my $resultUsingLWP;
if($resp->is_success) {
  $resultUsingLWP = $resp->content;
} else {
  $resultUsingLWP = $resp->status_line;
}

print "Content-type: text/html; charset=utf-8\n\n";

print "LWP result: {$resultUsingLWP}";

0
========= end of perl script ========

This runs fine in command line, it prints the HTML code of Yahoo's homepage. But when I
run it as a CGI script from browser, it returns following message:

LWP result: {500 Can't connect to www.yahoo.com:80 (Bad hostname 'www.yahoo.com')}

That's weird that the internet connection is fine (otherwise I wouldn't be able to reply
this email). So it indicates that when a CGI script wants to do this, it will be blocked
by some mechanism... I am not sure if it has anything to do with SELinux...

thanks a lot!

Chris




--- Charles Curley <charlescurley@xxxxxxxxxxxxxxxxx> wrote:

> On Sat, Nov 25, 2006 at 11:01:46AM -0800, Chris wrote:
> > Hi,
> > 
> > I found that I cannot make my perl script work: it uses LWP or
> > simpleget.pl to retrieve a web page, then process on the data
> > retrieved. This script can work fine in command line, but if I run
> > it as a CGI script, no data can be retrieved.
> > 
> > I guess that there is some kind of restrictions on this in the
> > security machanism, but I am not sure. Could anyone shed some light
> > on this for me?
> 
> Have you checked your web server's logs? I suspect a lack of
> permission to write to the directory where you want to put the
> files. You didn't indicate your server. Apache runs as apache:apache,
> and tomcat as tomcat:tomcat.
> 
> -- 
> 
> Charles Curley                  /"\    ASCII Ribbon Campaign
> Looking for fine software       \ /    Respect for open standards
> and/or writing?                  X     No HTML/RTF in email
> http://www.charlescurley.com    / \    No M$ Word docs in email
> 
> Key fingerprint = CE5C 6645 A45A 64E4 94C0  809C FFF6 4C48 4ECD DFDB
> > -- 
> fedora-list mailing list
> fedora-list@xxxxxxxxxx
> To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list



 
____________________________________________________________________________________
Do you Yahoo!?
Everyone is raving about the all-new Yahoo! Mail beta.
http://new.mail.yahoo.com

-- 
fedora-list mailing list
fedora-list@xxxxxxxxxx
To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list
[Index of Archives]     [Older Fedora Users]     [Fedora Announce]     [Fedora Package Announce]     [EPEL Announce]     [Fedora Magazine]     [Fedora News]     [Fedora Summer Coding]     [Fedora Laptop]     [Fedora Cloud]     [Fedora Advisory Board]     [Fedora Education]     [Fedora Security]     [Fedora Scitech]     [Fedora Robotics]     [Fedora Maintainers]     [Fedora Infrastructure]     [Fedora Websites]     [Anaconda Devel]     [Fedora Devel Java]     [Fedora Legacy]     [Fedora Desktop]     [Fedora Fonts]     [ATA RAID]     [Fedora Marketing]     [Fedora Management Tools]     [Fedora Mentors]     [SSH]     [Fedora Package Review]     [Fedora R Devel]     [Fedora PHP Devel]     [Kickstart]     [Fedora Music]     [Fedora Packaging]     [Centos]     [Fedora SELinux]     [Fedora Legal]     [Fedora Kernel]     [Fedora OCaml]     [Coolkey]     [Virtualization Tools]     [ET Management Tools]     [Yum Users]     [Tux]     [Yosemite News]     [Gnome Users]     [KDE Users]     [Fedora Art]     [Fedora Docs]     [Asterisk PBX]     [Fedora Sparc]     [Fedora Universal Network Connector]     [Libvirt Users]     [Fedora ARM]

  Powered by Linux