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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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