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- /* See LICENSE file for copyright and license details. */
- #include <stdbool.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <unistd.h>
- #include <sys/stat.h>
-
- #define OPER(x) (oper[(x)-'a'])
-
- static bool test(const char *);
-
- static bool quiet = false;
- static bool oper[26];
- static struct stat old, new;
-
- int
- main(int argc, char *argv[]) {
- char buf[BUFSIZ], *p;
- bool match = false;
- int opt;
-
- while((opt = getopt(argc, argv, "C:bcdefghn:o:pqrsuwx")) != -1)
- switch(opt) {
- case 'C': /* tests relative to directory */
- if(chdir(optarg) == -1) {
- perror(optarg);
- exit(2);
- }
- break;
- case 'n': /* newer than file */
- case 'o': /* older than file */
- if(!(OPER(opt) = stat(optarg, (opt == 'n' ? &new : &old)) == 0))
- perror(optarg);
- break;
- case 'q': /* quiet (no output, just status) */
- quiet = true;
- break;
- default: /* miscellaneous operators */
- OPER(opt) = true;
- break;
- case '?': /* error: unknown flag */
- fprintf(stderr, "usage: %s [-bcdefghpqrsuwx] [-C dir] [-n file] [-o file] [file...]\n", argv[0]);
- exit(2);
- }
- if(optind == argc)
- while(fgets(buf, sizeof buf, stdin)) {
- if(*(p = &buf[strlen(buf)-1]) == '\n')
- *p = '\0';
- match |= test(buf);
- }
- else
- while(optind < argc)
- match |= test(argv[optind++]);
-
- return match ? 0 : 1;
- }
-
- bool
- test(const char *path) {
- struct stat st;
-
- if((!OPER('b') || (stat(path, &st) == 0 && S_ISBLK(st.st_mode))) /* block special */
- && (!OPER('c') || (stat(path, &st) == 0 && S_ISCHR(st.st_mode))) /* character special */
- && (!OPER('d') || (stat(path, &st) == 0 && S_ISDIR(st.st_mode))) /* directory */
- && (!OPER('e') || (access(path, F_OK) == 0)) /* exists */
- && (!OPER('f') || (stat(path, &st) == 0 && S_ISREG(st.st_mode))) /* regular file */
- && (!OPER('g') || (stat(path, &st) == 0 && (st.st_mode & S_ISGID))) /* set-group-id flag */
- && (!OPER('h') || (lstat(path, &st) == 0 && S_ISLNK(st.st_mode))) /* symbolic link */
- && (!OPER('n') || (stat(path, &st) == 0 && st.st_mtime > new.st_mtime)) /* newer than file */
- && (!OPER('o') || (stat(path, &st) == 0 && st.st_mtime < old.st_mtime)) /* older than file */
- && (!OPER('p') || (stat(path, &st) == 0 && S_ISFIFO(st.st_mode))) /* named pipe */
- && (!OPER('r') || (access(path, R_OK) == 0)) /* readable */
- && (!OPER('s') || (stat(path, &st) == 0 && st.st_size > 0)) /* not empty */
- && (!OPER('u') || (stat(path, &st) == 0 && (st.st_mode & S_ISUID))) /* set-user-id flag */
- && (!OPER('w') || (access(path, W_OK) == 0)) /* writable */
- && (!OPER('x') || (access(path, X_OK) == 0))) { /* executable */
- if(quiet)
- exit(0);
- puts(path);
- return true;
- }
- else
- return false;
- }
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