110 lines
3.1 KiB
C
110 lines
3.1 KiB
C
/* See LICENSE file for copyright and license details. */
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#include <sys/stat.h>
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#include <dirent.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "arg.h"
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char *argv0;
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#define FLAG(x) (flag[(x)-'a'])
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static void test(const char *, const char *);
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static void usage(void);
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static int match = 0;
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static int flag[26];
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static struct stat old, new;
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static void
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test(const char *path, const char *name)
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{
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struct stat st, ln;
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if ((!stat(path, &st) && (FLAG('a') || name[0] != '.') /* hidden files */
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&& (!FLAG('b') || S_ISBLK(st.st_mode)) /* block special */
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&& (!FLAG('c') || S_ISCHR(st.st_mode)) /* character special */
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&& (!FLAG('d') || S_ISDIR(st.st_mode)) /* directory */
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&& (!FLAG('e') || access(path, F_OK) == 0) /* exists */
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&& (!FLAG('f') || S_ISREG(st.st_mode)) /* regular file */
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&& (!FLAG('g') || st.st_mode & S_ISGID) /* set-group-id flag */
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&& (!FLAG('h') || (!lstat(path, &ln) && S_ISLNK(ln.st_mode))) /* symbolic link */
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&& (!FLAG('n') || st.st_mtime > new.st_mtime) /* newer than file */
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&& (!FLAG('o') || st.st_mtime < old.st_mtime) /* older than file */
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&& (!FLAG('p') || S_ISFIFO(st.st_mode)) /* named pipe */
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&& (!FLAG('r') || access(path, R_OK) == 0) /* readable */
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&& (!FLAG('s') || st.st_size > 0) /* not empty */
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&& (!FLAG('u') || st.st_mode & S_ISUID) /* set-user-id flag */
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&& (!FLAG('w') || access(path, W_OK) == 0) /* writable */
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&& (!FLAG('x') || access(path, X_OK) == 0)) != FLAG('v')) { /* executable */
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if (FLAG('q'))
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exit(0);
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match = 1;
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puts(name);
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}
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}
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static void
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usage(void)
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{
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fprintf(stderr, "usage: %s [-abcdefghlpqrsuvwx] "
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"[-n file] [-o file] [file...]\n", argv0);
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exit(2); /* like test(1) return > 1 on error */
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}
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int
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main(int argc, char *argv[])
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{
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struct dirent *d;
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char path[PATH_MAX], *line = NULL, *file;
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size_t linesiz = 0;
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ssize_t n;
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DIR *dir;
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int r;
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ARGBEGIN {
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case 'n': /* newer than file */
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case 'o': /* older than file */
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file = EARGF(usage());
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if (!(FLAG(ARGC()) = !stat(file, (ARGC() == 'n' ? &new : &old))))
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perror(file);
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break;
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default:
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/* miscellaneous operators */
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if (strchr("abcdefghlpqrsuvwx", ARGC()))
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FLAG(ARGC()) = 1;
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else
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usage(); /* unknown flag */
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} ARGEND;
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if (!argc) {
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/* read list from stdin */
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while ((n = getline(&line, &linesiz, stdin)) > 0) {
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if (line[n - 1] == '\n')
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line[n - 1] = '\0';
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test(line, line);
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}
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free(line);
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} else {
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for (; argc; argc--, argv++) {
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if (FLAG('l') && (dir = opendir(*argv))) {
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/* test directory contents */
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while ((d = readdir(dir))) {
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r = snprintf(path, sizeof path, "%s/%s",
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*argv, d->d_name);
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if (r >= 0 && (size_t)r < sizeof path)
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test(path, d->d_name);
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}
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closedir(dir);
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} else {
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test(*argv, *argv);
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}
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}
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}
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return match ? 0 : 1;
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}
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