diff options
Diffstat (limited to 'source3/script/tests/smbspool_argv_wrapper.c')
-rw-r--r-- | source3/script/tests/smbspool_argv_wrapper.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/source3/script/tests/smbspool_argv_wrapper.c b/source3/script/tests/smbspool_argv_wrapper.c new file mode 100644 index 0000000..6f84f3b --- /dev/null +++ b/source3/script/tests/smbspool_argv_wrapper.c @@ -0,0 +1,72 @@ +/* + 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; +} |