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79 lines
2.8 KiB
79 lines
2.8 KiB
/* See LICENSE file for copyright and license details. */
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#include <dirent.h>
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#include <stdbool.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 <sys/stat.h>
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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 bool match = false;
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static bool flag[26];
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static struct stat old, new;
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int
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main(int argc, char *argv[]) {
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struct dirent *d;
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char buf[BUFSIZ];
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DIR *dir;
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int opt;
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while((opt = getopt(argc, argv, "abcdefghln:o:pqrsuwx")) != -1)
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switch(opt) {
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case 'n': /* newer than file */
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case 'o': /* older than file */
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if(!(FLAG(opt) = !stat(optarg, (opt == 'n' ? &new : &old))))
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perror(optarg);
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break;
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default: /* miscellaneous operators */
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FLAG(opt) = true;
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break;
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case '?': /* error: unknown flag */
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fprintf(stderr, "usage: %s [-abcdefghlpqrsuwx] [-n file] [-o file] [file...]\n", argv[0]);
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exit(2);
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}
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for(; optind < argc; optind++)
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if(FLAG('l') && (dir = opendir(argv[optind]))) {
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/* test directory contents */
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while((d = readdir(dir)))
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if(snprintf(buf, sizeof buf, "%s/%s", argv[optind], d->d_name) < sizeof buf)
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test(buf, d->d_name);
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closedir(dir);
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}
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else
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test(argv[optind], argv[optind]);
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return match ? 0 : 1;
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}
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void
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test(const char *path, const char *name) {
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struct stat st, ln;
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if(!stat(path, &st) && !lstat(path, &ln)
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&& ( FLAG('a') || name[0] != '.') /* hidden */
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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)) { /* executable */
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if(FLAG('q'))
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exit(0);
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match = true;
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puts(name);
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}
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}
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