cgi scripts fail to run from userdir with "End of script output before headers" errors
David A. Bandel
david.bandel at gmail.com
Tue Oct 7 19:26:45 PDT 2014
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/
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