1/*
2 * Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License").  You may not use
5 * this file except in compliance with the License.  You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10/*
11 * Key Management utility functions to share functionality between the export()
12 * and get_params() methods.
13 * export() uses OSSL_PARAM_BLD, and get_params() used the OSSL_PARAM[] to
14 * fill in parameter data for the same key and data fields.
15 */
16
17#include <openssl/core_names.h>
18#include "internal/param_build_set.h"
19
20DEFINE_SPECIAL_STACK_OF_CONST(BIGNUM_const, BIGNUM)
21
22int ossl_param_build_set_int(OSSL_PARAM_BLD *bld, OSSL_PARAM *p,
23                             const char *key, int num)
24{
25    if (bld != NULL)
26        return OSSL_PARAM_BLD_push_int(bld, key, num);
27    p = OSSL_PARAM_locate(p, key);
28    if (p != NULL)
29        return OSSL_PARAM_set_int(p, num);
30    return 1;
31}
32
33int ossl_param_build_set_long(OSSL_PARAM_BLD *bld, OSSL_PARAM *p,
34                              const char *key, long num)
35{
36    if (bld != NULL)
37        return OSSL_PARAM_BLD_push_long(bld, key, num);
38    p = OSSL_PARAM_locate(p, key);
39    if (p != NULL)
40        return OSSL_PARAM_set_long(p, num);
41    return 1;
42}
43
44int ossl_param_build_set_utf8_string(OSSL_PARAM_BLD *bld, OSSL_PARAM *p,
45                                     const char *key, const char *buf)
46{
47    if (bld != NULL)
48        return OSSL_PARAM_BLD_push_utf8_string(bld, key, buf, 0);
49    p = OSSL_PARAM_locate(p, key);
50    if (p != NULL)
51        return OSSL_PARAM_set_utf8_string(p, buf);
52    return 1;
53}
54
55int ossl_param_build_set_octet_string(OSSL_PARAM_BLD *bld, OSSL_PARAM *p,
56                                      const char *key,
57                                      const unsigned char *data,
58                                      size_t data_len)
59{
60    if (bld != NULL)
61        return OSSL_PARAM_BLD_push_octet_string(bld, key, data, data_len);
62
63    p = OSSL_PARAM_locate(p, key);
64    if (p != NULL)
65        return OSSL_PARAM_set_octet_string(p, data, data_len);
66    return 1;
67}
68
69int ossl_param_build_set_bn_pad(OSSL_PARAM_BLD *bld, OSSL_PARAM *p,
70                                const char *key, const BIGNUM *bn,  size_t sz)
71{
72    if (bld != NULL)
73        return OSSL_PARAM_BLD_push_BN_pad(bld, key, bn, sz);
74    p = OSSL_PARAM_locate(p, key);
75    if (p != NULL) {
76        if (sz > p->data_size)
77            return 0;
78        p->data_size = sz;
79        return OSSL_PARAM_set_BN(p, bn);
80    }
81    return 1;
82}
83
84int ossl_param_build_set_bn(OSSL_PARAM_BLD *bld, OSSL_PARAM *p,
85                            const char *key, const BIGNUM *bn)
86{
87    if (bld != NULL)
88        return OSSL_PARAM_BLD_push_BN(bld, key, bn);
89
90    p = OSSL_PARAM_locate(p, key);
91    if (p != NULL)
92        return OSSL_PARAM_set_BN(p, bn) > 0;
93    return 1;
94}
95
96int ossl_param_build_set_multi_key_bn(OSSL_PARAM_BLD *bld, OSSL_PARAM *params,
97                                      const char *names[],
98                                      STACK_OF(BIGNUM_const) *stk)
99{
100    int i, sz = sk_BIGNUM_const_num(stk);
101    OSSL_PARAM *p;
102
103
104    if (bld != NULL) {
105        for (i = 0; i < sz && names[i] != NULL; ++i) {
106            if (!OSSL_PARAM_BLD_push_BN(bld, names[i],
107                                        sk_BIGNUM_const_value(stk, i)))
108                return 0;
109        }
110        return 1;
111    }
112
113    for (i = 0; i < sz && names[i] != NULL; ++i) {
114        p = OSSL_PARAM_locate(params, names[i]);
115        if (p != NULL) {
116            if (!OSSL_PARAM_set_BN(p, sk_BIGNUM_const_value(stk, i)))
117                return 0;
118        }
119    }
120    return 1;
121}
122