this repo has no description
Support the -l option with sudo (#357)
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src/tools/sudo.c
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src/tools/sudo.c
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along with Darling. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdlib.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/types.h>
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unsigned int firstarg = 1, uid = 0, gid = 0;
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static int list_mode = 0;
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int argparse(int, char**);
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int usage(int, int);
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int main(int argc, char **argv)
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{
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if ( ( argparse(argc, argv) || usage(argc, 0) ) == 1 )
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return 1;
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char *path = getenv("PATH"), *path_orig, *fullpath = NULL;
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int i, len;
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if (argparse(argc, argv))
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return 1;
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setuid(uid);
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setgid(gid);
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execvp(argv[firstarg], &argv[firstarg]);
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perror("Error");
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return 1;
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if (firstarg == argc && list_mode)
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{
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printf("List mode without command not supported yet.\n");
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return EXIT_SUCCESS;
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}
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else if (list_mode)
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{
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/* Print fill path to command, then args if present */
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if (!path)
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printf("can't search for command if no path\n");
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path = strdup(path);
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path_orig = path;
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len = strlen(path_orig);
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for (i = 0; i < len; i++)
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{
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if (path_orig[i] == ':' || path_orig[i] == '\0')
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{
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path_orig[i] = '\0';
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fullpath = malloc(strlen(argv[firstarg])+strlen(path)+2);
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strcpy(fullpath, path);
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fullpath[strlen(path)] = '/';
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strcpy(fullpath+strlen(path)+1, argv[firstarg]);
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if (access(fullpath, X_OK) == 0)
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break;
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free(fullpath);
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fullpath = NULL;
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path = path_orig+i+1;
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}
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}
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free(path_orig);
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if (!fullpath)
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{
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fprintf(stderr, "%s: %s: command not found\n", argv[0], argv[firstarg]);
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return EXIT_FAILURE;
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}
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printf("%s", fullpath);
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free(fullpath);
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for (i = firstarg+1; i < argc; i++)
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{
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printf(" %s", argv[i]);
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}
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putchar('\n');
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return EXIT_SUCCESS;
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}
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else
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{
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if (firstarg < argc)
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{
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execvp(argv[firstarg], &argv[firstarg]);
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perror("Running sudo failed");
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}
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else
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return EXIT_SUCCESS;
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}
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return EXIT_FAILURE;
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}
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int argparse(int argc, char **argv)
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{
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while( (argv[firstarg] != NULL) && (!strncmp(argv[firstarg], "-", 1)) )
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for (firstarg = 1; firstarg < argc; firstarg++)
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{
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if(!strcmp(argv[firstarg], "-g"))
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{
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sscanf(argv[++firstarg], "%u", &gid);
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firstarg++;
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}
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else if(!strcmp(argv[firstarg], "-u"))
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{
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sscanf(argv[++firstarg], "%u", &uid);
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firstarg++;
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}
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else if (!strcmp(argv[firstarg], "-A"))
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{
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firstarg++;
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}
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else if (!strcmp(argv[firstarg], "-n"))
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{
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firstarg++;
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}
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else if (!strcmp(argv[firstarg], "-v"))
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{
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firstarg++;
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}
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else if(!strcmp(argv[firstarg], "--"))
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{
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firstarg++;
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break;
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}
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else if(!strcmp(argv[firstarg], "-k"))
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firstarg++;
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{
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}
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else if(!strcmp(argv[firstarg], "--help"))
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{
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return usage(argc, 1);
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}
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else if (!strcmp(argv[firstarg], "-l"))
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{
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list_mode = 1;
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}
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else
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{
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fprintf(stderr, "Unknown option: %s\n", argv[firstarg]);
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return usage(argc, 1);
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break;
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}
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}
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return 0;
···
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int usage(int argc, int arg_help)
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{
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if (argc <= (int)firstarg || arg_help == 1)
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if (argc <= firstarg || arg_help == 1)
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{
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fprintf(stderr, "This is a fake 'sudo' implementation, intended for use in Darling.\n"
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"Processes will think they are run as UID/GID 0, but they are still run as your original UID/GID.\n"