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Before calling a backend like smbspool, CUPS will set argv[0] to the "sanitized" Device URI (the Device URI with username/password information removed). These changes are intended to catch problems with smbspool that may be created by this behavior (like https://bugzilla.samba.org/show_bug.cgi?id=14128). source3/script/tests/smbspool_argv_wrapper.c: added to emulate CUPS-like behavior by setting argv[0] to the device URI before exec()ing smbspool. source3/script/tests/test_smbspool.sh: updated to use smbspool_argv_wrapper to test the CUPS-like behavior described above. Signed-off-by: Bryan Mason <bmason@redhat.com> Reviewed-by: Andreas Schneider <asn@samba.org> Reviewed-by: Alexander Bokovoy <ab@samba.org> Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org> Autobuild-Date(master): Wed Oct 16 10:55:04 UTC 2019 on sn-devel-184
73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
/*
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Wrapper for smbspool to test Device URI in argv[0]
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Copyright (C) Bryan Mason 2019
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <unistd.h>
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#include <stdlib.h>
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#include <errno.h>
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/*
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* Before calling a backend like smbspool, CUPS will set argv[0] to
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* the Device URI. This program wraps a program like smbspool and
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* sets argv[0] to the device URI before exec()ing the acutal backend
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* program.
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*/
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int main(int argc, char *argv[], char *envp[])
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{
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char **new_argv;
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char *exec_path;
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int a;
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int rv;
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/*
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* Expected parameters:
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*
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* smbspool_argv_wrapper smbspool uri job user title copies opts file(s)
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* argv[0] 1 2 3 4 5 6 7 8
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*
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*/
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/* Allocate memory for the new arguments (exit on failure). */
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new_argv = calloc(argc, sizeof(char *));
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if (new_argv == 0) {
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exit(ENOMEM);
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}
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/* Save the path to the smbspool executable */
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exec_path = argv[1];
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/*
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* Shift the rest of the args so smbspool is called with:
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*
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* uri job user title copies opts file(s)
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* argv[0] 1 2 3 4 5 6
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*/
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for (a = 2; a < argc-1; a++) {
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new_argv[a-2] = argv[a];
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}
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/* Execute smbspool with new arguments */
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rv = execve(exec_path, new_argv, envp);
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if (rv == -1) {
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exit(errno);
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}
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/* Avoid compiler error/warning */
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return 0;
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}
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