1 /* $OpenBSD: dsa_meth.c,v 1.5 2022/07/11 05:33:14 bcook Exp $ */
2 /*
3 * Copyright (c) 2018 Theo Buehler <tb@openbsd.org>
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18 #include <stdlib.h>
19 #include <string.h>
20
21 #include <openssl/dsa.h>
22 #include <openssl/err.h>
23
24 #include "dsa_locl.h"
25
26 DSA_METHOD *
DSA_meth_new(const char * name,int flags)27 DSA_meth_new(const char *name, int flags)
28 {
29 DSA_METHOD *meth;
30
31 if ((meth = calloc(1, sizeof(*meth))) == NULL)
32 return NULL;
33 if ((meth->name = strdup(name)) == NULL) {
34 free(meth);
35 return NULL;
36 }
37 meth->flags = flags;
38
39 return meth;
40 }
41
42 void
DSA_meth_free(DSA_METHOD * meth)43 DSA_meth_free(DSA_METHOD *meth)
44 {
45 if (meth == NULL)
46 return;
47
48 free(meth->name);
49 free(meth);
50 }
51
52 DSA_METHOD *
DSA_meth_dup(const DSA_METHOD * meth)53 DSA_meth_dup(const DSA_METHOD *meth)
54 {
55 DSA_METHOD *copy;
56
57 if ((copy = calloc(1, sizeof(*copy))) == NULL)
58 return NULL;
59 memcpy(copy, meth, sizeof(*copy));
60 if ((copy->name = strdup(meth->name)) == NULL) {
61 free(copy);
62 return NULL;
63 }
64
65 return copy;
66 }
67
68 const char *
DSA_meth_get0_name(const DSA_METHOD * meth)69 DSA_meth_get0_name(const DSA_METHOD *meth)
70 {
71 return meth->name;
72 }
73
74 int
DSA_meth_set1_name(DSA_METHOD * meth,const char * name)75 DSA_meth_set1_name(DSA_METHOD *meth, const char *name)
76 {
77 char *new_name;
78
79 if ((new_name = strdup(name)) == NULL) {
80 DSAerror(ERR_R_MALLOC_FAILURE);
81 return 0;
82 }
83
84 free(meth->name);
85 meth->name = new_name;
86
87 return 1;
88 }
89
90 int
DSA_meth_set_sign(DSA_METHOD * meth,DSA_SIG * (* sign)(const unsigned char *,int,DSA *))91 DSA_meth_set_sign(DSA_METHOD *meth,
92 DSA_SIG *(*sign)(const unsigned char *, int, DSA *))
93 {
94 meth->dsa_do_sign = sign;
95 return 1;
96 }
97
98 int
DSA_meth_set_finish(DSA_METHOD * meth,int (* finish)(DSA *))99 DSA_meth_set_finish(DSA_METHOD *meth, int (*finish)(DSA *))
100 {
101 meth->finish = finish;
102 return 1;
103 }
104