[hylafax-users] Problem with non-root use

[David Ronis <ronis@ronispc.chem.mcgill.ca>]

I've posted this problem before, but now I've added some debugging
code to faxQueueApp.c++ (after the errormessage is generated).  In
short, the problem is that the TIFFOpen(outfile, "r") at line 1012 was
failing, generating a "Could not reopen converted document to verify
format" message when I sent a fax (with sendfax) as a normal user, but
worked fine as root.

I added some debugging code (appended below) to give a directory
listing of the offending file as well as effective and real user and
group ID's (which are the root or uucp respectively).

I run faxq from /var/spool/fax with the -D flag and here's what I see:

-rw-------   1 uucp     wheel           0 Dec  6 12:56 docq/doc25.cover;70
PID=10 (0); GID=10 (0)


The ID's and permissions are OK, but the file is empty!

I'm running on an i685-linux-gnu box, and have upgraded to glibc-2.2
and gs-6.50 (no change).  I also am using a freshly installed
libtiff.so.3.5.5.

Any suggestions?  This shouldn't be happening. (Could there be a 
problem with a SUID script?)

David


Here's the debugging routine (in C, so you'll need an extern "C" block in 
the calling C++ module).

#include <stdio.h>
#include <sys/stat.h>

void strange_debug(const char *file)
{
  struct stat sbuf;

  if(stat(file,&sbuf))
    perror(file);
  else
    {
      char *p,*pp,fbuf[1024],buf[1024];
      FILE *stream;
      for(p=fbuf,pp=file;*pp;)
	{
	  if(*pp==';')
	    *p++='\\';
	  *p++=*pp++;
	}
      *p='\0';
      sprintf(buf,"ls -l %s",fbuf);  // I know this is ugly!
      system(buf);
      printf("PID=%d (%d); GID=%d (%d)\n",geteuid(), getuid(), getegid(),
	     getgid());
      
      fflush(stdout);
    } 
}

  



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