dunnel

 1#include <stdio.h>
 2#include <string.h>
 3#include <stdlib.h>
 4#include <unistd.h>
 5
 6#include <sys/stat.h>
 7#include <sys/types.h>
 8
 9#define MIN(A, B) ((A) < (B) ? (A) : (B))
10
11int
12xmemcmp(void *s1, size_t l1, void *s2, size_t l2)
13{
14	return memcmp(s1, s2, MIN(l1, l2));
15}
16
17unsigned char*
18readfile(char *fp)
19{
20	FILE *fd;
21	struct stat st;
22	size_t len, read;
23	unsigned char *fc;
24
25	if (stat(fp, &st))
26		return NULL;
27	len = st.st_size;
28
29	fc = malloc(len + 1);
30	if (!fc)
31		return NULL;
32	if (!(fd = fopen(fp, "r")))
33		return NULL;
34
35	read = fread(fc, sizeof(unsigned char), len, fd);
36	if (ferror(fd))
37		return NULL;
38	if (fclose(fd))
39		return NULL;
40
41	fc[read] = '\0';
42	return fc;
43}