/* 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;
|
|
}
|