DreamHost CGI not working...

[Alex Tweedly]

Alex Tweedly wrote:

> Mark Wieder wrote:
>
>>
>> This is almost probably a script error. I was getting 500 errors until
>> I changed the line endings in my script file, then it suddenly started
>> working.
>>  
>>
> I'm also having the same problem (or at least the same symptoms) as Todd.
>
> Can you specify *how* you changed the line endings in your script file ?
> Or how I can verify if they are correct ?
>
> (I ftp'ed the script file in Ascii mode, the same as I did for the 
> other working CGI files (Python scripts), so afaik they should be set 
> correctly. I copied another copy of the script to a text file - 
> //tweedly.org/revbin/test1.txt - in case looking at that would help)
>
It's not a script error (that's not to say I understand it - but it's 
not a script error).

I enabled shell access, then telnet'ed in (as Jacque suggested in her 
cgi tutorial). Note that I had followed Phil's instructions up to this 
point - they're slightly different; the engine file is revolution.x86 
and the cgi is test1.cgi - both 755 mode, and the first line of 
test1.cgi specifies
#!./revolution.x86 -ui

Here's the terminal log

> Linux 2.4.29-grsec+w+fhs6b+gr0501+nfs+a32+++p4+sata+c4+gr2b-v6.189 
> (fig.dreamhos
> t.com) (8)
>
> fig login: alextweedly
> Password:
> Last login: Sun Jan 15 15:01:41 2006 from 
> 87.112.17.11.bbplus.ptn-ag1.dyn.plus.n
> et on pts/6
> Linux fig 2.4.29-grsec+w+fhs6b+gr0501+nfs+a32+++p4+sata+c4+gr2b-v6.189 
> #1 SMP Mo
> n Feb 7 13:23:30 PST 2005 i686 GNU/Linux
>    _____.__
>  _/ ____\__| ____
>  \   __\|  |/ ___\
>   |  |  |  / /_/  >
>   |__|  |__\___  /
>           /_____/
>  Welcome to fig.dreamhost.com
>
> Any malicious and/or unauthorized activity is strictly forbidden.
> All activity may be logged by DreamHost Web Hosting.
>
> [fig]$ pwd
> /home/alextweedly
> [fig]$ cd tweedly.org
> [fig]$ cd revbin
> [fig]$ dir
> helloworld.cgi  revolution.x86  test1.cgi  test1.txt
> [fig]$ ./revolution.x86 test1.chi
> -bash: ./revolution.x86: Text file busy

So I try again just to see if I'm lucky !!

> [fig]$ ./revolution.x86 test1.cgi
> -bash: ./revolution.x86: Text file busy

Jacque's instructions said to name the engine "revolution", so I tried that

> [fig]$ cp revolution.x86  revolution
> [fig]$ ./revolution test1.cgi
> Could not open libgdk-x11-2.0.so: libgobject-2.0.so: cannot open 
> shared object f
> ile: No such file or directory
> Content-Type: text/html
>
> Your ip is: <br>the params = "startup"<br>system version = Linux 
> 2.4.29-grsec w
> fhs6b gr0501 nfs a32   p4 sata c4 gr2b-v6.189<br>version = 
> 2.6.2<br>build = 77<b
> r>machine = i686<br>$OLDPWD = 
> /home/alextweedly/tweedly.org<br>$LOGNAME = alextw
> eedly<br>$LANGUAGE = en_US:en_GB:en<br>$HOME = 
> /home/alextweedly<br>$SHLVL = 1<b
> r>$PS1 = [\h]$ <br>$LANG = en_US<br>$PWD = 
> /home/alextweedly/tweedly.org/revbin<
> br>$LC_COLLATE = C<br>$PATH = 
> /usr/local/bin:/usr/bin:/bin:/usr/bin/X11:/usr/gam
> es<br>$MAIL = /home/alextweedly/Maildir/<br>$USER = 
> alextweedly<br>$HUSHLOGIN =
> FALSE<br>$TERM = ansi<br>$SHELL = /bin/bash<br>$HZ = 
> 100<br>$REMOTEHOST = 87.112
> .7.140.bbplus.ptn-ag1.dyn.plus.net<br>$0 = test1.cgi<br>

and it more or less worked - gave me an error message first, but the 
output appeared properly.
Note that at this point, the first line of test.cgi still says
#!./revolution.x86 -ui
and test1.cgi does not work from my browser.

However, I created test2.cgi - changing the first line to be
#!./revolution -ui
uploaded that, changed permissions to 755, and it now works OK from 
browser and from shell.

Still gives the error message

> Could not open libgdk-x11-2.0.so: libgobject-2.0.so: cannot open 
> shared object f
> ile: No such file or directory

when run from the shell - but that doesn't appear to impact the 
subsequent output, so it works OK as a cgi from the browser.

I think the problem is not with the name of the revolution executable - 
I think for some reason the ftp upload of the original file has left the 
file marked as "in use" or some such thing, causing the "Text file busy" 
(note that the Unix error message "Text file" refers to an executable - 
very confusing !!).

I deleted it, then copied the working one
cp revolution revolution.x86
and it now works just the same as the one called simply "revolution". 

Summary - I don't understand exactly what happened, or why it worked - 
but I now have cgi scripts working (still to figure out whether the 
libgdk error matters or not).

Todd - I'd suggest activating shell on you r account (if you haven't 
already), and trying what I did above.


-- 
Alex Tweedly       http://www.tweedly.net



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