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/*
Wrapper for smbspool to test Device URI in argv[0]
Copyright (C) Bryan Mason 2019
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
/*
* Before calling a backend like smbspool, CUPS will set argv[0] to
* the Device URI. This program wraps a program like smbspool and
* sets argv[0] to the device URI before exec()ing the actual backend
* program.
*/
int main(int argc, char *argv[], char *envp[])
{
char **new_argv;
char *exec_path;
int a;
int rv;
/*
* Expected parameters:
*
* smbspool_argv_wrapper smbspool uri job user title copies opts file(s)
* argv[0] 1 2 3 4 5 6 7 8
*
*/
/* Allocate memory for the new arguments (exit on failure). */
new_argv = calloc(argc, sizeof(char *));
if (new_argv == 0) {
exit(ENOMEM);
}
/* Save the path to the smbspool executable */
exec_path = argv[1];
/*
* Shift the rest of the args so smbspool is called with:
*
* uri job user title copies opts file(s)
* argv[0] 1 2 3 4 5 6
*/
for (a = 2; a < argc; a++) {
new_argv[a-2] = argv[a];
}
/* Execute smbspool with new arguments */
rv = execve(exec_path, new_argv, envp);
if (rv == -1) {
exit(errno);
}
/* Avoid compiler error/warning */
return 0;
}
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