1 d71d75ad 2017-11-05 stsp /*
 2 d71d75ad 2017-11-05 stsp  * Copyright (c) 2017 Stefan Sperling <stsp@openbsd.org>
 3 d71d75ad 2017-11-05 stsp  *
 4 d71d75ad 2017-11-05 stsp  * Permission to use, copy, modify, and distribute this software for any
 5 d71d75ad 2017-11-05 stsp  * purpose with or without fee is hereby granted, provided that the above
 6 d71d75ad 2017-11-05 stsp  * copyright notice and this permission notice appear in all copies.
 7 d71d75ad 2017-11-05 stsp  *
 8 d71d75ad 2017-11-05 stsp  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 9 d71d75ad 2017-11-05 stsp  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 d71d75ad 2017-11-05 stsp  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 d71d75ad 2017-11-05 stsp  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 d71d75ad 2017-11-05 stsp  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 d71d75ad 2017-11-05 stsp  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 d71d75ad 2017-11-05 stsp  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 d71d75ad 2017-11-05 stsp  */
16 d71d75ad 2017-11-05 stsp 
17 d71d75ad 2017-11-05 stsp #include <stdio.h>
18 d71d75ad 2017-11-05 stsp #include <sha1.h>
19 d71d75ad 2017-11-05 stsp 
20 d71d75ad 2017-11-05 stsp #include "got_object.h"
21 d71d75ad 2017-11-05 stsp 
22 d71d75ad 2017-11-05 stsp const char *
23 d71d75ad 2017-11-05 stsp got_object_id_str(struct got_object_id *id, char *buf, size_t size)
24 d71d75ad 2017-11-05 stsp {
25 d71d75ad 2017-11-05 stsp 	char *p = buf;
26 d71d75ad 2017-11-05 stsp 	char hex[3];
27 d71d75ad 2017-11-05 stsp 	int i;
28 d71d75ad 2017-11-05 stsp 
29 d71d75ad 2017-11-05 stsp 	if (size < SHA1_DIGEST_STRING_LENGTH)
30 d71d75ad 2017-11-05 stsp 		return NULL;
31 d71d75ad 2017-11-05 stsp 
32 d71d75ad 2017-11-05 stsp 	for (i = 0; i < SHA1_DIGEST_LENGTH; i++) {
33 d71d75ad 2017-11-05 stsp 		snprintf(hex, sizeof(hex), "%.2x", id->sha1[i]);
34 d71d75ad 2017-11-05 stsp 		p[0] = hex[0];
35 d71d75ad 2017-11-05 stsp 		p[1] = hex[1];
36 d71d75ad 2017-11-05 stsp 		p += 2;
37 d71d75ad 2017-11-05 stsp 	}
38 d71d75ad 2017-11-05 stsp 	p[0] = '\0';
39 d71d75ad 2017-11-05 stsp 
40 d71d75ad 2017-11-05 stsp 	return buf;
41 d71d75ad 2017-11-05 stsp }