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