summaryrefslogtreecommitdiff
path: root/source4/heimdal/lib/hx509/peer.c
blob: c796e19173666721200929cf926b806e88b1eb64 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
/*
 * Copyright (c) 2006 - 2007 Kungliga Tekniska Högskolan
 * (Royal Institute of Technology, Stockholm, Sweden).
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the Institute nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include "hx_locl.h"

/**
 * @page page_peer Hx509 crypto selecting functions
 *
 * Peer info structures are used togeter with hx509_crypto_select() to
 * select the best avaible crypto algorithm to use.
 *
 * See the library functions here: @ref hx509_peer
 */

/**
 * Allocate a new peer info structure an init it to default values.
 *
 * @param context A hx509 context.
 * @param peer return an allocated peer, free with hx509_peer_info_free().
 *
 * @return An hx509 error code, see hx509_get_error_string().
 *
 * @ingroup hx509_peer
 */

int
hx509_peer_info_alloc(hx509_context context, hx509_peer_info *peer)
{
    *peer = calloc(1, sizeof(**peer));
    if (*peer == NULL) {
	hx509_set_error_string(context, 0, ENOMEM, "out of memory");
	return ENOMEM;
    }
    return 0;
}


static void
free_cms_alg(hx509_peer_info peer)
{
    if (peer->val) {
	size_t i;
	for (i = 0; i < peer->len; i++)
	    free_AlgorithmIdentifier(&peer->val[i]);
	free(peer->val);
	peer->val = NULL;
	peer->len = 0;
    }
}

/**
 * Free a peer info structure.
 *
 * @param peer peer info to be freed.
 *
 * @ingroup hx509_peer
 */

void
hx509_peer_info_free(hx509_peer_info peer)
{
    if (peer == NULL)
	return;
    if (peer->cert)
	hx509_cert_free(peer->cert);
    free_cms_alg(peer);
    memset(peer, 0, sizeof(*peer));
    free(peer);
}

/**
 * Set the certificate that remote peer is using.
 *
 * @param peer peer info to update
 * @param cert cerificate of the remote peer.
 *
 * @return An hx509 error code, see hx509_get_error_string().
 *
 * @ingroup hx509_peer
 */

int
hx509_peer_info_set_cert(hx509_peer_info peer,
			 hx509_cert cert)
{
    if (peer->cert)
	hx509_cert_free(peer->cert);
    peer->cert = hx509_cert_ref(cert);
    return 0;
}

/**
 * Add an additional algorithm that the peer supports.
 *
 * @param context A hx509 context.
 * @param peer the peer to set the new algorithms for
 * @param val an AlgorithmsIdentier to add
 *
 * @return An hx509 error code, see hx509_get_error_string().
 *
 * @ingroup hx509_peer
 */

int
hx509_peer_info_add_cms_alg(hx509_context context,
			    hx509_peer_info peer,
			    const AlgorithmIdentifier *val)
{
    void *ptr;
    int ret;

    ptr = realloc(peer->val, sizeof(peer->val[0]) * (peer->len + 1));
    if (ptr == NULL) {
	hx509_set_error_string(context, 0, ENOMEM, "out of memory");
	return ENOMEM;
    }
    ret = copy_AlgorithmIdentifier(val, &peer->val[peer->len]);
    if (ret == 0)
	peer->len += 1;
    else
	hx509_set_error_string(context, 0, ret, "out of memory");
    return ret;
}

/**
 * Set the algorithms that the peer supports.
 *
 * @param context A hx509 context.
 * @param peer the peer to set the new algorithms for
 * @param val array of supported AlgorithmsIdentiers
 * @param len length of array val.
 *
 * @return An hx509 error code, see hx509_get_error_string().
 *
 * @ingroup hx509_peer
 */

int
hx509_peer_info_set_cms_algs(hx509_context context,
			     hx509_peer_info peer,
			     const AlgorithmIdentifier *val,
			     size_t len)
{
    size_t i;

    free_cms_alg(peer);

    peer->val = calloc(len, sizeof(*peer->val));
    if (peer->val == NULL) {
	peer->len = 0;
	hx509_set_error_string(context, 0, ENOMEM, "out of memory");
	return ENOMEM;
    }
    peer->len = len;
    for (i = 0; i < len; i++) {
	int ret;
	ret = copy_AlgorithmIdentifier(&val[i], &peer->val[i]);
	if (ret) {
	    hx509_clear_error_string(context);
	    free_cms_alg(peer);
	    return ret;
	}
    }
    return 0;
}

#if 0

/*
 * S/MIME
 */

int
hx509_peer_info_parse_smime(hx509_peer_info peer,
			    const heim_octet_string *data)
{
    return 0;
}

int
hx509_peer_info_unparse_smime(hx509_peer_info peer,
			      heim_octet_string *data)
{
    return 0;
}

/*
 * For storing hx509_peer_info to be able to cache them.
 */

int
hx509_peer_info_parse(hx509_peer_info peer,
		      const heim_octet_string *data)
{
    return 0;
}

int
hx509_peer_info_unparse(hx509_peer_info peer,
			heim_octet_string *data)
{
    return 0;
}
#endif