Date: Fri, 20 Sep 1996 17:30:15 -0700 (PDT) From: Jaye Mathisen <mrcpu@schizo.cdsnet.net> To: hackers@freebsd.org Subject: Hmmm, command-line vs CGI execution of perl 5.003 app and FreeBSD. Message-ID: <199609210030.RAA06931@schizo.cdsnet.net>
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OK, stumper time.
Perl 5.003, FreeBSD 2.2-current, Apache 1.1.1 with xssi,php/fi, and Netscape
Server 1.0.
Under Netscape 1.1 server, I have a perl CGI script that runs fine. I take
the same script on the same box and run it under Apache, and I get "Premature
end of Script Headers".
So I go through the script with use strict, and -w, and no errors.
I tried $|=1, and various incarnations of "select" to see if it was an
unbuffered output problem, but to no avail.
If I run the script from the command line, the generated output looks
just peachy, and other than stripping off the initial
Content-type: text/html\n\n mumbo-jumbo, when put in a .html file, displays
fine.
running the script with redirected stdout/stderr shows no output on anything
other than stdout.
So I muck around in the util-script.c file for apache and throw in some
debugging, and add the following after the log message for the error message:
fprintf(stderr,"w -> %s, *f -> %s, feof= %d, ferror = %d, fileno = %
d\n",w,f,feof(f), ferror(f), fileno(f));
(Ignoring my braindamage for *f, but I didn't feel like re-compiling for
the example)
And lo and behold:
w -> , *f -> , feof= 1, ferror = 0, fileno = 9
So it looks as if somehow the fd's are getting munged? The question, is
this a perl/Apache interaction problem? Is there something in Perl I should
be doing to make this work properly?
This is the same box that had op/exec failing in the perl test, and I notice
that perl 5.003_002 won't Configure on it, it fails in Configure with a problem
with file descriptor 4.
The script has a little database stuff, but none of those modules generate any
output.
Been doing all the scripting with the Netscape server, and never had this
problem other than throwing the $|=1 at the top of every script.
I'm starting to think it's a FreeBSD problem, but thought I'd hit the experts
first.
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