1/*
2 * Copyright (c) 2016 Thomas Pornin <pornin@bolet.org>
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining
5 * a copy of this software and associated documentation files (the
6 * "Software"), to deal in the Software without restriction, including
7 * without limitation the rights to use, copy, modify, merge, publish,
8 * distribute, sublicense, and/or sell copies of the Software, and to
9 * permit persons to whom the Software is furnished to do so, subject to
10 * the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 */
24
25#include "brssl.h"
26
27/* see brssl.h */
28void *
29xmalloc(size_t len)
30{
31	void *buf;
32
33	if (len == 0) {
34		return NULL;
35	}
36	buf = malloc(len);
37	if (buf == NULL) {
38#ifndef _STANDALONE
39		fprintf(stderr, "ERROR: could not allocate %lu byte(s)\n",
40			(unsigned long)len);
41		exit(EXIT_FAILURE);
42#else
43;
44#endif
45	}
46	return buf;
47}
48
49/* see brssl.h */
50void
51xfree(void *buf)
52{
53	if (buf != NULL) {
54		free(buf);
55	}
56}
57
58/* see brssl.h */
59void *
60xblobdup(const void *src, size_t len)
61{
62	void *buf;
63
64	buf = xmalloc(len);
65	memcpy(buf, src, len);
66	return buf;
67}
68
69/* see brssl.h */
70char *
71xstrdup(const void *src)
72{
73	return xblobdup(src, strlen(src) + 1);
74}
75
76/* see brssl.h */
77br_x509_pkey *
78xpkeydup(const br_x509_pkey *pk)
79{
80	br_x509_pkey *pk2;
81
82	pk2 = xmalloc(sizeof *pk2);
83	pk2->key_type = pk->key_type;
84	switch (pk->key_type) {
85	case BR_KEYTYPE_RSA:
86		pk2->key.rsa.n = xblobdup(pk->key.rsa.n, pk->key.rsa.nlen);
87		pk2->key.rsa.nlen = pk->key.rsa.nlen;
88		pk2->key.rsa.e = xblobdup(pk->key.rsa.e, pk->key.rsa.elen);
89		pk2->key.rsa.elen = pk->key.rsa.elen;
90		break;
91	case BR_KEYTYPE_EC:
92		pk2->key.ec.curve = pk->key.ec.curve;
93		pk2->key.ec.q = xblobdup(pk->key.ec.q, pk->key.ec.qlen);
94		pk2->key.ec.qlen = pk->key.ec.qlen;
95		break;
96	default:
97#ifndef _STANDALONE
98		fprintf(stderr, "Unknown public key type: %u\n",
99			(unsigned)pk->key_type);
100		exit(EXIT_FAILURE);
101#else
102;
103#endif
104	}
105	return pk2;
106}
107
108/* see brssl.h */
109void
110xfreepkey(br_x509_pkey *pk)
111{
112	if (pk != NULL) {
113		switch (pk->key_type) {
114		case BR_KEYTYPE_RSA:
115			xfree(pk->key.rsa.n);
116			xfree(pk->key.rsa.e);
117			break;
118		case BR_KEYTYPE_EC:
119			xfree(pk->key.ec.q);
120			break;
121		default:
122#ifndef _STANDALONE
123			fprintf(stderr, "Unknown public key type: %u\n",
124				(unsigned)pk->key_type);
125			exit(EXIT_FAILURE);
126#else
127;
128#endif
129		}
130		xfree(pk);
131	}
132}
133