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/*
This program attempts to run the program EXECUTABLE_NAME in the same
directory as itself using AuthorizationExecuteWithPrivileges. If the
authorization fails or is canceled, EXECUTABLE_NAME is run without
privileges using a plain exec.
This program is the first link in the chain
zenmap_auth -> zenmap_wrapper.py -> zenmap.bin
*/
#include <errno.h>
#include <libgen.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <Security/Authorization.h>
#include <Security/AuthorizationTags.h>
#define EXECUTABLE_NAME "zenmap_wrapper.py"
int main(int argc, char *argv[]) {
AuthorizationItem items[] = {
{ kAuthorizationRightExecute, 0, NULL, 0 }
};
AuthorizationRights rights = { 1, items };
AuthorizationRef ref;
AuthorizationFlags flags;
OSStatus status;
char executable_path[1024];
const char *cwd;
size_t len_cwd;
int return_code;
cwd = dirname(argv[0]);
len_cwd = strlen(cwd);
if (sizeof(executable_path) < len_cwd + strlen("/") + strlen(EXECUTABLE_NAME) + 1) {
fprintf(stderr, "Not enough room to store executable path: %s\n", strerror(errno));
exit(1);
}
strcpy(executable_path, cwd);
executable_path[len_cwd] = '/';
strcpy(executable_path + len_cwd + 1, EXECUTABLE_NAME);
flags = kAuthorizationFlagDefaults
| kAuthorizationFlagInteractionAllowed
| kAuthorizationFlagPreAuthorize
| kAuthorizationFlagExtendRights;
status = AuthorizationCreate(&rights, kAuthorizationEmptyEnvironment, flags, &ref);
if (status != errAuthorizationSuccess) {
if (status != errAuthorizationCanceled)
fprintf(stderr, "Couldn't create authorization reference (status code %ld).\n", status);
errno = 0;
execv(executable_path, argv);
fprintf(stderr, "Couldn't exec '%s': %s.\n", executable_path, strerror(errno));
exit(1);
}
status = AuthorizationExecuteWithPrivileges(ref, executable_path,
kAuthorizationFlagDefaults, argv + 1, NULL);
AuthorizationFree(ref, kAuthorizationFlagDefaults);
if (status != errAuthorizationSuccess) {
fprintf(stderr, "Couldn't execute '%s' with privileges (status code %ld).\n", executable_path, status);
errno = 0;
execv(executable_path, argv);
fprintf(stderr, "Couldn't exec '%s': %s.\n", executable_path, strerror(errno));
exit(1);
}
wait(&return_code);
exit(return_code);
}
|
