cgi scripts fail to run from userdir with "End of script output before headers" errors
David A. Bandel
david.bandel at gmail.com
Wed Oct 8 12:06:20 PDT 2014
Lonnie,
OK, there must be a global configuration that's preventing this script from
running. Can you post your entire config file? If you don't want to do
that, I can provide an alternate means to pass it to me. Also, you said
these run if you put them in your global cgi-bin directory, just not as a
user, correct? So mod_cgi is loaded (please confirm).
David-
On Wed, Oct 8, 2014 at 12:34 PM, Lonni J Friedman <netllama at gmail.com>
wrote:
> I saved the script in /home/netllama/public_html/cgi-bin/m.py, made it
> executable for everyone, and ran it manually:
>
> [netllama at netllama cgi-bin]$ ./m.py
> Content-Type: text/plain;charset=utf-8
>
> Hello World!
>
>
> I then attempted to call it from firefox, and I saw another 500
> Internal Server Error:
> [Wed Oct 08 10:32:06.977104 2014] [cgi:error] [pid 26629] [client
> 127.0.0.1:59320] End of script output before headers: m.py
>
>
> I've already got the SetHandler in the config:
> <Directory /home/*/public_html/cgi-bin>
> AllowOverride Indexes AuthConfig
> Options ExecCGI FollowSymLinks
> SetHandler cgi-script
> AddHandler cgi-script .py
> </Directory>
>
> I'm using apache-2.4.10.
>
>
> On Tue, Oct 7, 2014 at 7:26 PM, David A. Bandel <david.bandel at gmail.com>
> wrote:
> > Lonnie,
> >
> > Phew -- yep, this is why I hate this error.
> >
> > Try this:
> > /----start of script----/
> > #!/usr/bin/env python
> > # -*- coding: UTF-8 -*-
> >
> > # enable debugging
> > import cgitb
> > cgitb.enable()
> >
> > print "Content-Type: text/plain;charset=utf-8"
> > print
> >
> > print "Hello World!"
> >
> > ----/end of script/----
> >
> > Your script and this one (call it test.py) should both be executable,
> owned
> > by the same user, and in the user's cgi-bin directory.
> >
> > Ensure you can run both from the command line, then try to run them in
> > apache by connecting with a browser.
> >
> > If test.py works, but your foo.py script doesn't, the problem is in your
> > foo.py script. Make sure your script is outputting a content-type line
> (see
> > above).
> >
> > If the test.py does not work, we have a configuration issue.
> >
> > Could also add a "SetHandler: cgi-script" to your cgi-directory stanza.
> >
> > BTW: which version of apache? 2.2 or 2.4 (some declarations changed
> between
> > these two version numbers)
> >
> >
> > David-
> >
> >
> > On Tue, Oct 7, 2014 at 6:17 PM, Lonni J Friedman <netllama at gmail.com>
> wrote:
> >>
> >> I definitely have suexec enabled:
> >> [Mon Oct 06 16:09:31.518777 2014] [suexec:notice] [pid 20128] AH01232:
> >> suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
> >>
> >> Renaming the suexec binary, and retrying didn't really help:
> >> [Tue Oct 07 16:17:15.854011 2014] [cgi:error] [pid 26631] [client
> >> 127.0.0.1:55657] AH01215: (2)No such file or directory: exec of
> >> '/usr/sbin/suexec' failed
> >> [Tue Oct 07 16:17:15.854671 2014] [cgi:error] [pid 26631] [client
> >> 127.0.0.1:55657] End of script output before headers: foo.py
> >>
> >> I added a handler to the "<Directory /home/*/public_html/cgi-bin>"
> >> section of my apache config, but that didn't have any impact on the
> >> problem.
> >>
> >> Any other suggestions?
> >>
> >>
> >> On Tue, Oct 7, 2014 at 6:28 AM, David A. Bandel <david.bandel at gmail.com
> >
> >> wrote:
> >> > Lonnie,
> >> >
> >> > With or without suexec, you will need a handler line:
> >> > AddHandler cgi-script .cgi .py
> >> > (make sure the above line has the pertinent extension, like .py and
> your
> >> > python script ends in .py)
> >> >
> >> > If using suexec, you should see a line in your error_log:
> >> > suEXEC mechanism enabled
> >> >
> >> > Your script must be runable by suEXEC user. You might find it easier
> >> > to
> >> > disable suexec (unless you need it). Just rename the suexec script
> and
> >> > restart apache and test. If you the script works but you need suexec
> >> > (because you're going to have lots of users that need to run CGI
> >> > scripts),
> >> > then you'll need to troubleshoot the suexec mess.
> >> >
> >> > David-
> >> >
> >> > On Mon, Oct 6, 2014 at 8:55 PM, Lonni J Friedman <netllama at gmail.com>
> >> > wrote:
> >> >>
> >> >> Hi David,
> >> >> I was actually leaning towards some kind of apache configuration
> >> >> issue, but clearly i'm not the expert here, or I would have figured
> it
> >> >> out myself :)
> >> >>
> >> >> To answer your questions:
> >> >> Its a python script that I'm trying to run.
> >> >> $HOME is on the same partition as / (which is the same partition as
> >> >> the apache $DOCROOT). Its all on a development system, not anything
> >> >> resembling production.
> >> >> The user's UID is greater than 1000.
> >> >> I am using suexec.
> >> >>
> >> >> I'd be happy to answer any other questions.
> >> >>
> >> >> thanks
> >> >>
> >> >>
> >> >> On Mon, Oct 6, 2014 at 6:45 PM, David A. Bandel
> >> >> <david.bandel at gmail.com>
> >> >> wrote:
> >> >> > Lonnie,
> >> >> >
> >> >> > This is one of the most annoying, frustrating errors. All it says
> is
> >> >> > that
> >> >> > the script didn't work. This may be permissions. It may be your
> >> >> > $HOME
> >> >> > mount is non-executable. Difficult to say. You didn't say what
> kind
> >> >> > of
> >> >> > script it was (Perl, PHP, shell). Is the UID of the user greater
> >> >> > than
> >> >> > 1000?
> >> >> > Are you using suexec?
> >> >> >
> >> >> > I hate this error. Will be either one of the permissions issues
> >> >> > above
> >> >> > or
> >> >> > some Apache configuration issue (I'm betting on permissions).
> >> >> >
> >> >> > David-
> >> >> >
> >> >> > On Mon, Oct 6, 2014 at 5:57 PM, Lonni J Friedman <
> netllama at gmail.com>
> >> >> > wrote:
> >> >> >>
> >> >> >> Howdy folks,
> >> >> >> Any cgi/apach experts still around? I'm trying to get cgi scripts
> >> >> >> working from $USERDIR on a new Fedora system, and they all fail
> with
> >> >> >> internal server errors. In the apache error log, I see:
> >> >> >> [cgi:error] End of script output before headers
> >> >> >>
> >> >> >> If I copy the script over to the server $DOCROOT/cgi-bin then it
> >> >> >> runs
> >> >> >> just fine. So this proves the script itself isn't the problem.
> >> >> >> Additionally, non-cgi scripts are served just fine from $USERDIR.
> >> >> >> Both the cgi-bin directory and the script itself are executable
> for
> >> >> >> all users (755). This is what I've got set in the apache config
> for
> >> >> >> the USERDIR directory structure:
> >> >> >>
> >> >> >> <Directory "/home/*/public_html">
> >> >> >> AllowOverride FileInfo AuthConfig Limit Indexes
> >> >> >> Options MultiViews Indexes SymLinksIfOwnerMatch ExecCGI
> >> >> >> Require method GET POST OPTIONS
> >> >> >> </Directory>
> >> >> >>
> >> >> >> <Directory /home/*/public_html/cgi-bin>
> >> >> >> AllowOverride Indexes AuthConfig
> >> >> >> Options ExecCGI
> >> >> >> SetHandler cgi-script
> >> >> >> </Directory>
> >> >> >>
> >> >> >>
> >> >> >> Anyone know what I'm missing?
> >> >> >>
> >> >> >> thanks
> >> >>
> >> >>
> >> >> --
> >> >> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >> >> L. Friedman netllama at gmail.com
> >> >> LlamaLand http://netllama.linux-sxs.org
> >> >> _______________________________________________
> >> >> Linux-users mailing list
> >> >> Linux-users at linux-sxs.org
> >> >> http://mailman.celestial.com/mailman/listinfo/linux-users
> >> >
> >> >
> >> >
> >> >
> >> > --
> >> > Two things are infinite: the universe and human stupidity; and I'm not
> >> > sure
> >> > about the the universe. -- Albert Einstein
> >> > Visit my web page at: http://david.bandel.us/
> >> >
> >> > _______________________________________________
> >> > Linux-users mailing list
> >> > Linux-users at linux-sxs.org
> >> > http://mailman.celestial.com/mailman/listinfo/linux-users
> >> >
> >>
> >>
> >>
> >> --
> >> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >> L. Friedman netllama at gmail.com
> >> LlamaLand http://netllama.linux-sxs.org
> >> _______________________________________________
> >> Linux-users mailing list
> >> Linux-users at linux-sxs.org
> >> http://mailman.celestial.com/mailman/listinfo/linux-users
> >
> >
> >
> >
> > --
> > Two things are infinite: the universe and human stupidity; and I'm not
> sure
> > about the the universe. -- Albert Einstein
> > Visit my web page at: http://david.bandel.us/
> >
> > _______________________________________________
> > Linux-users mailing list
> > Linux-users at linux-sxs.org
> > http://mailman.celestial.com/mailman/listinfo/linux-users
> >
>
>
>
> --
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> L. Friedman netllama at gmail.com
> LlamaLand http://netllama.linux-sxs.org
> _______________________________________________
> Linux-users mailing list
> Linux-users at linux-sxs.org
> http://mailman.celestial.com/mailman/listinfo/linux-users
>
--
Two things are infinite: the universe and human stupidity; and I'm not sure
about the the universe. -- Albert Einstein
Visit my web page at: http://david.bandel.us/
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.celestial.com/pipermail/linux-users/attachments/20141008/9246b2d9/attachment-0001.html>
More information about the Linux-users
mailing list