/src/openssl/crypto/param_build.c

Source (jump to first uncovered line)
/*
 * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
 * Copyright (c) 2019, Oracle and/or its affiliates.  All rights reserved.
 *
 * Licensed under the Apache License 2.0 (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#include <string.h>
#include <openssl/err.h>
#include <openssl/cryptoerr.h>
#include <openssl/params.h>
#include "internal/cryptlib.h"
#include "internal/param_build.h"

#define OSSL_PARAM_ALLOCATED_END    127

typedef union {
    OSSL_UNION_ALIGN;
} OSSL_PARAM_BLD_BLOCK;

#define ALIGN_SIZE  sizeof(OSSL_PARAM_BLD_BLOCK)

static size_t bytes_to_blocks(size_t bytes)
{
    return (bytes + ALIGN_SIZE - 1) / ALIGN_SIZE;
}

static OSSL_PARAM_BLD_DEF *param_push(OSSL_PARAM_BLD *bld, const char *key,
                                      int size, size_t alloc, int type,
                                      int secure)
{
    OSSL_PARAM_BLD_DEF *pd;

    if (bld->curr >= OSSL_PARAM_BLD_MAX) {
        CRYPTOerr(CRYPTO_F_PARAM_PUSH, CRYPTO_R_TOO_MANY_RECORDS);
        return NULL;
    }
    pd = bld->params + bld->curr++;
    memset(pd, 0, sizeof(*pd));
    pd->key = key;
    pd->type = type;
    pd->size = size;
    pd->alloc_blocks = bytes_to_blocks(size);
    if ((pd->secure = secure) != 0)
        bld->secure_blocks += pd->alloc_blocks;
    else
        bld->total_blocks += pd->alloc_blocks;
    return pd;
}

static int param_push_num(OSSL_PARAM_BLD *bld, const char *key,
                          void *num, size_t size, int type)
{
    OSSL_PARAM_BLD_DEF *pd = param_push(bld, key, size, size, type, 0);

    if (pd == NULL)
        return 0;
    if (size > sizeof(pd->num)) {
        CRYPTOerr(CRYPTO_F_PARAM_PUSH_NUM, CRYPTO_R_TOO_MANY_BYTES);
        return 0;
    }
    memcpy(&pd->num, num, size);
    return 1;
}

void ossl_param_bld_init(OSSL_PARAM_BLD *bld)
{
    memset(bld, 0, sizeof(*bld));
}

int ossl_param_bld_push_int(OSSL_PARAM_BLD *bld, const char *key, int num)
{
    return param_push_num(bld, key, &num, sizeof(num), OSSL_PARAM_INTEGER);
}

int ossl_param_bld_push_uint(OSSL_PARAM_BLD *bld, const char *key,
                             unsigned int num)
{
    return param_push_num(bld, key, &num, sizeof(num),
                          OSSL_PARAM_UNSIGNED_INTEGER);
}

int ossl_param_bld_push_long(OSSL_PARAM_BLD *bld, const char *key,
                             long int num)
{
    return param_push_num(bld, key, &num, sizeof(num), OSSL_PARAM_INTEGER);
}

int ossl_param_bld_push_ulong(OSSL_PARAM_BLD *bld, const char *key,
                              unsigned long int num)
{
    return param_push_num(bld, key, &num, sizeof(num),
                          OSSL_PARAM_UNSIGNED_INTEGER);
}

int ossl_param_bld_push_int32(OSSL_PARAM_BLD *bld, const char *key,
                              int32_t num)
{
    return param_push_num(bld, key, &num, sizeof(num), OSSL_PARAM_INTEGER);
}

int ossl_param_bld_push_uint32(OSSL_PARAM_BLD *bld, const char *key,
                               uint32_t num)
{
    return param_push_num(bld, key, &num, sizeof(num),
                          OSSL_PARAM_UNSIGNED_INTEGER);
}

int ossl_param_bld_push_int64(OSSL_PARAM_BLD *bld, const char *key,
                              int64_t num)
{
    return param_push_num(bld, key, &num, sizeof(num), OSSL_PARAM_INTEGER);
}

int ossl_param_bld_push_uint64(OSSL_PARAM_BLD *bld, const char *key,
                               uint64_t num)
{
    return param_push_num(bld, key, &num, sizeof(num),
                          OSSL_PARAM_UNSIGNED_INTEGER);
}

int ossl_param_bld_push_size_t(OSSL_PARAM_BLD *bld, const char *key,
                               size_t num)
{
    return param_push_num(bld, key, &num, sizeof(num),
                          OSSL_PARAM_UNSIGNED_INTEGER);
}

int ossl_param_bld_push_double(OSSL_PARAM_BLD *bld, const char *key,
                               double num)
{
    return param_push_num(bld, key, &num, sizeof(num), OSSL_PARAM_REAL);
}

int ossl_param_bld_push_BN(OSSL_PARAM_BLD *bld, const char *key,
                           const BIGNUM *bn)
{
    return ossl_param_bld_push_BN_pad(bld, key, bn,
                                      bn == NULL ? 0 : BN_num_bytes(bn));
}

int ossl_param_bld_push_BN_pad(OSSL_PARAM_BLD *bld, const char *key,
                               const BIGNUM *bn, size_t sz)
{
    int n, secure = 0;
    OSSL_PARAM_BLD_DEF *pd;

    if (bn != NULL) {
        n = BN_num_bytes(bn);
        if (n < 0) {
            CRYPTOerr(0, CRYPTO_R_ZERO_LENGTH_NUMBER);
            return 0;
        }
        if (sz < (size_t)n) {
            CRYPTOerr(0, CRYPTO_R_TOO_SMALL_BUFFER);
            return 0;
        }
        if (BN_get_flags(bn, BN_FLG_SECURE) == BN_FLG_SECURE)
            secure = 1;
    }
    pd = param_push(bld, key, sz, sz, OSSL_PARAM_UNSIGNED_INTEGER, secure);
    if (pd == NULL)
        return 0;
    pd->bn = bn;
    return 1;
}

int ossl_param_bld_push_utf8_string(OSSL_PARAM_BLD *bld, const char *key,
                                    const char *buf, size_t bsize)
{
    OSSL_PARAM_BLD_DEF *pd;

    if (bsize == 0) {
        bsize = strlen(buf) + 1;
    } else if (bsize > INT_MAX) {
        CRYPTOerr(CRYPTO_F_OSSL_PARAM_BLD_PUSH_UTF8_STRING,
                  CRYPTO_R_STRING_TOO_LONG);
        return 0;
    }
    pd = param_push(bld, key, bsize, bsize, OSSL_PARAM_UTF8_STRING, 0);
    if (pd == NULL)
        return 0;
    pd->string = buf;
    return 1;
}

int ossl_param_bld_push_utf8_ptr(OSSL_PARAM_BLD *bld, const char *key,
                                 char *buf, size_t bsize)
{
    OSSL_PARAM_BLD_DEF *pd;

    if (bsize == 0) {
        bsize = strlen(buf) + 1;
    } else if (bsize > INT_MAX) {
        CRYPTOerr(CRYPTO_F_OSSL_PARAM_BLD_PUSH_UTF8_PTR,
                  CRYPTO_R_STRING_TOO_LONG);
        return 0;
    }
    pd = param_push(bld, key, bsize, sizeof(buf), OSSL_PARAM_UTF8_PTR, 0);
    if (pd == NULL)
        return 0;
    pd->string = buf;
    return 1;
}

int ossl_param_bld_push_octet_string(OSSL_PARAM_BLD *bld, const char *key,
                                     const void *buf, size_t bsize)
{
    OSSL_PARAM_BLD_DEF *pd;

    if (bsize > INT_MAX) {
        CRYPTOerr(CRYPTO_F_OSSL_PARAM_BLD_PUSH_OCTET_STRING,
                  CRYPTO_R_STRING_TOO_LONG);
        return 0;
    }
    pd = param_push(bld, key, bsize, bsize, OSSL_PARAM_OCTET_STRING, 0);
    if (pd == NULL)
        return 0;
    pd->string = buf;
    return 1;
}

int ossl_param_bld_push_octet_ptr(OSSL_PARAM_BLD *bld, const char *key,
                                  void *buf, size_t bsize)
{
    OSSL_PARAM_BLD_DEF *pd;

    if (bsize > INT_MAX) {
        CRYPTOerr(CRYPTO_F_OSSL_PARAM_BLD_PUSH_OCTET_PTR,
                  CRYPTO_R_STRING_TOO_LONG);
        return 0;
    }
    pd = param_push(bld, key, bsize, sizeof(buf), OSSL_PARAM_OCTET_PTR, 0);
    if (pd == NULL)
        return 0;
    pd->string = buf;
    return 1;
}

static OSSL_PARAM *param_bld_convert(OSSL_PARAM_BLD *bld, OSSL_PARAM *param,
                                     OSSL_PARAM_BLD_BLOCK *blk,
                                     OSSL_PARAM_BLD_BLOCK *secure)
{
    size_t i;
    OSSL_PARAM_BLD_DEF *pd;
    void *p;

    for (i = 0; i < bld->curr; i++) {
        pd = bld->params + i;
        param[i].key = pd->key;
        param[i].data_type = pd->type;
        param[i].data_size = pd->size;
        param[i].return_size = 0;

        if (pd->secure) {
            p = secure;
            secure += pd->alloc_blocks;
        } else {
            p = blk;
            blk += pd->alloc_blocks;
        }
        param[i].data = p;
        if (pd->bn != NULL) {
            /* BIGNUM */
            BN_bn2nativepad(pd->bn, (unsigned char *)p, pd->size);
        } else if (pd->type == OSSL_PARAM_OCTET_PTR
                   || pd->type == OSSL_PARAM_UTF8_PTR) {
            /* PTR */
            *(const void **)p = pd->string;
        } else if (pd->type == OSSL_PARAM_OCTET_STRING
                   || pd->type == OSSL_PARAM_UTF8_STRING) {
            if (pd->string != NULL)
                memcpy(p, pd->string, pd->size);
            else
                memset(p, 0, pd->size);
        } else {
            /* Number, but could also be a NULL BIGNUM */
            if (pd->size > sizeof(pd->num))
                memset(p, 0, pd->size);
            else if (pd->size > 0)
                memcpy(p, &pd->num, pd->size);
        }
    }
    param[i] = OSSL_PARAM_construct_end();
    return param + i;
}

OSSL_PARAM *ossl_param_bld_to_param(OSSL_PARAM_BLD *bld)
{
    OSSL_PARAM_BLD_BLOCK *blk, *s = NULL;
    OSSL_PARAM *params, *last;
    const size_t p_blks = bytes_to_blocks((1 + bld->curr) * sizeof(*params));
    const size_t total = ALIGN_SIZE * (p_blks + bld->total_blocks);
    const size_t ss = ALIGN_SIZE * bld->secure_blocks;

    if (ss > 0) {
        s = OPENSSL_secure_malloc(ss);
        if (s == NULL) {
            CRYPTOerr(CRYPTO_F_OSSL_PARAM_BLD_TO_PARAM,
                      CRYPTO_R_SECURE_MALLOC_FAILURE);
            return NULL;
        }
    }
    params = OPENSSL_malloc(total);
    if (params == NULL) {
        CRYPTOerr(CRYPTO_F_OSSL_PARAM_BLD_TO_PARAM, ERR_R_MALLOC_FAILURE);
        OPENSSL_secure_free(s);
        return NULL;
    }
    blk = p_blks + (OSSL_PARAM_BLD_BLOCK *)(params);
    last = param_bld_convert(bld, params, blk, s);
    last->data_size = ss;
    last->data = s;
    last->data_type = OSSL_PARAM_ALLOCATED_END;
    return params;
}

void ossl_param_bld_free(OSSL_PARAM *params)
{
    if (params != NULL) {
        OSSL_PARAM *p;

        for (p = params; p->key != NULL; p++)
            ;
        if (p->data_type == OSSL_PARAM_ALLOCATED_END)
            OPENSSL_secure_clear_free(p->data, p->data_size);
        OPENSSL_free(params);
    }
}

OSSL_PARAM *ossl_param_bld_to_param_ex(OSSL_PARAM_BLD *bld, OSSL_PARAM *params,
                                       size_t param_n, void *data,
                                       size_t data_n, void *secure,
                                       size_t secure_n)
{
    if (params == NULL || data == NULL) {
        CRYPTOerr(CRYPTO_F_OSSL_PARAM_BLD_TO_PARAM_EX,
                  CRYPTO_R_INVALID_NULL_ARGUMENT);
        return NULL;
    }
    if (param_n < bld->curr + 1) {
        CRYPTOerr(CRYPTO_F_OSSL_PARAM_BLD_TO_PARAM_EX,
                  CRYPTO_R_INSUFFICIENT_PARAM_SIZE);
        return NULL;
    }
    if (data_n < ALIGN_SIZE * bld->total_blocks) {
        CRYPTOerr(CRYPTO_F_OSSL_PARAM_BLD_TO_PARAM_EX,
                  CRYPTO_R_INSUFFICIENT_DATA_SPACE);
        return NULL;
    }
    if (bld->secure_blocks > 0 && secure_n < ALIGN_SIZE * bld->secure_blocks) {
        CRYPTOerr(CRYPTO_F_OSSL_PARAM_BLD_TO_PARAM_EX,
                  CRYPTO_R_INSUFFICIENT_SECURE_DATA_SPACE);
        return NULL;
    }
    param_bld_convert(bld, params, (OSSL_PARAM_BLD_BLOCK *)data,
                      (OSSL_PARAM_BLD_BLOCK *)secure);
    return params;
}

Coverage Report

Created: 2023-05-05 14:20

Line	Count	Source (jump to first uncovered line)
1		/*
2		* Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
3		* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
4		*
5		* Licensed under the Apache License 2.0 (the "License"). You may not use
6		* this file except in compliance with the License. You can obtain a copy
7		* in the file LICENSE in the source distribution or at
8		* https://www.openssl.org/source/license.html
9		*/
10
11		#include <string.h>
12		#include <openssl/err.h>
13		#include <openssl/cryptoerr.h>
14		#include <openssl/params.h>
15		#include "internal/cryptlib.h"
16		#include "internal/param_build.h"
17
18	0	#define OSSL_PARAM_ALLOCATED_END 127
19
20		typedef union {
21		OSSL_UNION_ALIGN;
22		} OSSL_PARAM_BLD_BLOCK;
23
24	0	#define ALIGN_SIZE sizeof(OSSL_PARAM_BLD_BLOCK)
25
26		static size_t bytes_to_blocks(size_t bytes)
27	0	{
28	0	return (bytes + ALIGN_SIZE - 1) / ALIGN_SIZE;
29	0	}
30
31		static OSSL_PARAM_BLD_DEF param_push(OSSL_PARAM_BLD bld, const char *key,
32		int size, size_t alloc, int type,
33		int secure)
34	0	{
35	0	OSSL_PARAM_BLD_DEF *pd;
36
37	0	if (bld->curr >= OSSL_PARAM_BLD_MAX) {
38	0	CRYPTOerr(CRYPTO_F_PARAM_PUSH, CRYPTO_R_TOO_MANY_RECORDS);
39	0	return NULL;
40	0	}
41	0	pd = bld->params + bld->curr++;
42	0	memset(pd, 0, sizeof(*pd));
43	0	pd->key = key;
44	0	pd->type = type;
45	0	pd->size = size;
46	0	pd->alloc_blocks = bytes_to_blocks(size);
47	0	if ((pd->secure = secure) != 0)
48	0	bld->secure_blocks += pd->alloc_blocks;
49	0	else
50	0	bld->total_blocks += pd->alloc_blocks;
51	0	return pd;
52	0	}
53
54		static int param_push_num(OSSL_PARAM_BLD bld, const char key,
55		void *num, size_t size, int type)
56	0	{
57	0	OSSL_PARAM_BLD_DEF *pd = param_push(bld, key, size, size, type, 0);
58
59	0	if (pd == NULL)
60	0	return 0;
61	0	if (size > sizeof(pd->num)) {
62	0	CRYPTOerr(CRYPTO_F_PARAM_PUSH_NUM, CRYPTO_R_TOO_MANY_BYTES);
63	0	return 0;
64	0	}
65	0	memcpy(&pd->num, num, size);
66	0	return 1;
67	0	}
68
69		void ossl_param_bld_init(OSSL_PARAM_BLD *bld)
70	0	{
71	0	memset(bld, 0, sizeof(*bld));
72	0	}
73
74		int ossl_param_bld_push_int(OSSL_PARAM_BLD bld, const char key, int num)
75	0	{
76	0	return param_push_num(bld, key, &num, sizeof(num), OSSL_PARAM_INTEGER);
77	0	}
78
79		int ossl_param_bld_push_uint(OSSL_PARAM_BLD bld, const char key,
80		unsigned int num)
81	0	{
82	0	return param_push_num(bld, key, &num, sizeof(num),
83	0	OSSL_PARAM_UNSIGNED_INTEGER);
84	0	}
85
86		int ossl_param_bld_push_long(OSSL_PARAM_BLD bld, const char key,
87		long int num)
88	0	{
89	0	return param_push_num(bld, key, &num, sizeof(num), OSSL_PARAM_INTEGER);
90	0	}
91
92		int ossl_param_bld_push_ulong(OSSL_PARAM_BLD bld, const char key,
93		unsigned long int num)
94	0	{
95	0	return param_push_num(bld, key, &num, sizeof(num),
96	0	OSSL_PARAM_UNSIGNED_INTEGER);
97	0	}
98
99		int ossl_param_bld_push_int32(OSSL_PARAM_BLD bld, const char key,
100		int32_t num)
101	0	{
102	0	return param_push_num(bld, key, &num, sizeof(num), OSSL_PARAM_INTEGER);
103	0	}
104
105		int ossl_param_bld_push_uint32(OSSL_PARAM_BLD bld, const char key,
106		uint32_t num)
107	0	{
108	0	return param_push_num(bld, key, &num, sizeof(num),
109	0	OSSL_PARAM_UNSIGNED_INTEGER);
110	0	}
111
112		int ossl_param_bld_push_int64(OSSL_PARAM_BLD bld, const char key,
113		int64_t num)
114	0	{
115	0	return param_push_num(bld, key, &num, sizeof(num), OSSL_PARAM_INTEGER);
116	0	}
117
118		int ossl_param_bld_push_uint64(OSSL_PARAM_BLD bld, const char key,
119		uint64_t num)
120	0	{
121	0	return param_push_num(bld, key, &num, sizeof(num),
122	0	OSSL_PARAM_UNSIGNED_INTEGER);
123	0	}
124
125		int ossl_param_bld_push_size_t(OSSL_PARAM_BLD bld, const char key,
126		size_t num)
127	0	{
128	0	return param_push_num(bld, key, &num, sizeof(num),
129	0	OSSL_PARAM_UNSIGNED_INTEGER);
130	0	}
131
132		int ossl_param_bld_push_double(OSSL_PARAM_BLD bld, const char key,
133		double num)
134	0	{
135	0	return param_push_num(bld, key, &num, sizeof(num), OSSL_PARAM_REAL);
136	0	}
137
138		int ossl_param_bld_push_BN(OSSL_PARAM_BLD bld, const char key,
139		const BIGNUM *bn)
140	0	{
141	0	return ossl_param_bld_push_BN_pad(bld, key, bn,
142	0	bn == NULL ? 0 : BN_num_bytes(bn));
143	0	}
144
145		int ossl_param_bld_push_BN_pad(OSSL_PARAM_BLD bld, const char key,
146		const BIGNUM *bn, size_t sz)
147	0	{
148	0	int n, secure = 0;
149	0	OSSL_PARAM_BLD_DEF *pd;
150
151	0	if (bn != NULL) {
152	0	n = BN_num_bytes(bn);
153	0	if (n < 0) {
154	0	CRYPTOerr(0, CRYPTO_R_ZERO_LENGTH_NUMBER);
155	0	return 0;
156	0	}
157	0	if (sz < (size_t)n) {
158	0	CRYPTOerr(0, CRYPTO_R_TOO_SMALL_BUFFER);
159	0	return 0;
160	0	}
161	0	if (BN_get_flags(bn, BN_FLG_SECURE) == BN_FLG_SECURE)
162	0	secure = 1;
163	0	}
164	0	pd = param_push(bld, key, sz, sz, OSSL_PARAM_UNSIGNED_INTEGER, secure);
165	0	if (pd == NULL)
166	0	return 0;
167	0	pd->bn = bn;
168	0	return 1;
169	0	}
170
171		int ossl_param_bld_push_utf8_string(OSSL_PARAM_BLD bld, const char key,
172		const char *buf, size_t bsize)
173	0	{
174	0	OSSL_PARAM_BLD_DEF *pd;
175
176	0	if (bsize == 0) {
177	0	bsize = strlen(buf) + 1;
178	0	} else if (bsize > INT_MAX) {
179	0	CRYPTOerr(CRYPTO_F_OSSL_PARAM_BLD_PUSH_UTF8_STRING,
180	0	CRYPTO_R_STRING_TOO_LONG);
181	0	return 0;
182	0	}
183	0	pd = param_push(bld, key, bsize, bsize, OSSL_PARAM_UTF8_STRING, 0);
184	0	if (pd == NULL)
185	0	return 0;
186	0	pd->string = buf;
187	0	return 1;
188	0	}
189
190		int ossl_param_bld_push_utf8_ptr(OSSL_PARAM_BLD bld, const char key,
191		char *buf, size_t bsize)
192	0	{
193	0	OSSL_PARAM_BLD_DEF *pd;
194
195	0	if (bsize == 0) {
196	0	bsize = strlen(buf) + 1;
197	0	} else if (bsize > INT_MAX) {
198	0	CRYPTOerr(CRYPTO_F_OSSL_PARAM_BLD_PUSH_UTF8_PTR,
199	0	CRYPTO_R_STRING_TOO_LONG);
200	0	return 0;
201	0	}
202	0	pd = param_push(bld, key, bsize, sizeof(buf), OSSL_PARAM_UTF8_PTR, 0);
203	0	if (pd == NULL)
204	0	return 0;
205	0	pd->string = buf;
206	0	return 1;
207	0	}
208
209		int ossl_param_bld_push_octet_string(OSSL_PARAM_BLD bld, const char key,
210		const void *buf, size_t bsize)
211	0	{
212	0	OSSL_PARAM_BLD_DEF *pd;
213
214	0	if (bsize > INT_MAX) {
215	0	CRYPTOerr(CRYPTO_F_OSSL_PARAM_BLD_PUSH_OCTET_STRING,
216	0	CRYPTO_R_STRING_TOO_LONG);
217	0	return 0;
218	0	}
219	0	pd = param_push(bld, key, bsize, bsize, OSSL_PARAM_OCTET_STRING, 0);
220	0	if (pd == NULL)
221	0	return 0;
222	0	pd->string = buf;
223	0	return 1;
224	0	}
225
226		int ossl_param_bld_push_octet_ptr(OSSL_PARAM_BLD bld, const char key,
227		void *buf, size_t bsize)
228	0	{
229	0	OSSL_PARAM_BLD_DEF *pd;
230
231	0	if (bsize > INT_MAX) {
232	0	CRYPTOerr(CRYPTO_F_OSSL_PARAM_BLD_PUSH_OCTET_PTR,
233	0	CRYPTO_R_STRING_TOO_LONG);
234	0	return 0;
235	0	}
236	0	pd = param_push(bld, key, bsize, sizeof(buf), OSSL_PARAM_OCTET_PTR, 0);
237	0	if (pd == NULL)
238	0	return 0;
239	0	pd->string = buf;
240	0	return 1;
241	0	}
242
243		static OSSL_PARAM param_bld_convert(OSSL_PARAM_BLD bld, OSSL_PARAM *param,
244		OSSL_PARAM_BLD_BLOCK *blk,
245		OSSL_PARAM_BLD_BLOCK *secure)
246	0	{
247	0	size_t i;
248	0	OSSL_PARAM_BLD_DEF *pd;
249	0	void *p;
250
251	0	for (i = 0; i < bld->curr; i++) {
252	0	pd = bld->params + i;
253	0	param[i].key = pd->key;
254	0	param[i].data_type = pd->type;
255	0	param[i].data_size = pd->size;
256	0	param[i].return_size = 0;
257
258	0	if (pd->secure) {
259	0	p = secure;
260	0	secure += pd->alloc_blocks;
261	0	} else {
262	0	p = blk;
263	0	blk += pd->alloc_blocks;
264	0	}
265	0	param[i].data = p;
266	0	if (pd->bn != NULL) {
267		/* BIGNUM */
268	0	BN_bn2nativepad(pd->bn, (unsigned char *)p, pd->size);
269	0	} else if (pd->type == OSSL_PARAM_OCTET_PTR
270	0	\|\| pd->type == OSSL_PARAM_UTF8_PTR) {
271		/* PTR */
272	0	(const void *)p = pd->string;
273	0	} else if (pd->type == OSSL_PARAM_OCTET_STRING
274	0	\|\| pd->type == OSSL_PARAM_UTF8_STRING) {
275	0	if (pd->string != NULL)
276	0	memcpy(p, pd->string, pd->size);
277	0	else
278	0	memset(p, 0, pd->size);
279	0	} else {
280		/* Number, but could also be a NULL BIGNUM */
281	0	if (pd->size > sizeof(pd->num))
282	0	memset(p, 0, pd->size);
283	0	else if (pd->size > 0)
284	0	memcpy(p, &pd->num, pd->size);
285	0	}
286	0	}
287	0	param[i] = OSSL_PARAM_construct_end();
288	0	return param + i;
289	0	}
290
291		OSSL_PARAM ossl_param_bld_to_param(OSSL_PARAM_BLD bld)
292	0	{
293	0	OSSL_PARAM_BLD_BLOCK blk, s = NULL;
294	0	OSSL_PARAM params, last;
295	0	const size_t p_blks = bytes_to_blocks((1 + bld->curr) * sizeof(*params));
296	0	const size_t total = ALIGN_SIZE * (p_blks + bld->total_blocks);
297	0	const size_t ss = ALIGN_SIZE * bld->secure_blocks;
298
299	0	if (ss > 0) {
300	0	s = OPENSSL_secure_malloc(ss);
301	0	if (s == NULL) {
302	0	CRYPTOerr(CRYPTO_F_OSSL_PARAM_BLD_TO_PARAM,
303	0	CRYPTO_R_SECURE_MALLOC_FAILURE);
304	0	return NULL;
305	0	}
306	0	}
307	0	params = OPENSSL_malloc(total);
308	0	if (params == NULL) {
309	0	CRYPTOerr(CRYPTO_F_OSSL_PARAM_BLD_TO_PARAM, ERR_R_MALLOC_FAILURE);
310	0	OPENSSL_secure_free(s);
311	0	return NULL;
312	0	}
313	0	blk = p_blks + (OSSL_PARAM_BLD_BLOCK *)(params);
314	0	last = param_bld_convert(bld, params, blk, s);
315	0	last->data_size = ss;
316	0	last->data = s;
317	0	last->data_type = OSSL_PARAM_ALLOCATED_END;
318	0	return params;
319	0	}
320
321		void ossl_param_bld_free(OSSL_PARAM *params)
322	0	{
323	0	if (params != NULL) {
324	0	OSSL_PARAM *p;
325
326	0	for (p = params; p->key != NULL; p++)
327	0	;
328	0	if (p->data_type == OSSL_PARAM_ALLOCATED_END)
329	0	OPENSSL_secure_clear_free(p->data, p->data_size);
330	0	OPENSSL_free(params);
331	0	}
332	0	}
333
334		OSSL_PARAM ossl_param_bld_to_param_ex(OSSL_PARAM_BLD bld, OSSL_PARAM *params,
335		size_t param_n, void *data,
336		size_t data_n, void *secure,
337		size_t secure_n)
338	0	{
339	0	if (params == NULL \|\| data == NULL) {
340	0	CRYPTOerr(CRYPTO_F_OSSL_PARAM_BLD_TO_PARAM_EX,
341	0	CRYPTO_R_INVALID_NULL_ARGUMENT);
342	0	return NULL;
343	0	}
344	0	if (param_n < bld->curr + 1) {
345	0	CRYPTOerr(CRYPTO_F_OSSL_PARAM_BLD_TO_PARAM_EX,
346	0	CRYPTO_R_INSUFFICIENT_PARAM_SIZE);
347	0	return NULL;
348	0	}
349	0	if (data_n < ALIGN_SIZE * bld->total_blocks) {
350	0	CRYPTOerr(CRYPTO_F_OSSL_PARAM_BLD_TO_PARAM_EX,
351	0	CRYPTO_R_INSUFFICIENT_DATA_SPACE);
352	0	return NULL;
353	0	}
354	0	if (bld->secure_blocks > 0 && secure_n < ALIGN_SIZE * bld->secure_blocks) {
355	0	CRYPTOerr(CRYPTO_F_OSSL_PARAM_BLD_TO_PARAM_EX,
356	0	CRYPTO_R_INSUFFICIENT_SECURE_DATA_SPACE);
357	0	return NULL;
358	0	}
359	0	param_bld_convert(bld, params, (OSSL_PARAM_BLD_BLOCK *)data,
360	0	(OSSL_PARAM_BLD_BLOCK *)secure);
361	0	return params;
362	0	}