[thirdparty/openssl.git] / crypto / param_build.c

/*
 * Copyright 2019-2021 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 <openssl/types.h>
#include <openssl/safestack.h>
#include "internal/param_build_set.h"

/*
 * Special internal param type to indicate the end of an allocate OSSL_PARAM
 * array.
 */

typedef struct {
    const char *key;
    int type;
    int secure;
    size_t size;
    size_t alloc_blocks;
    const BIGNUM *bn;
    const void *string;
    union {
        /*
         * These fields are never directly addressed, but their sizes are
         * imporant so that all native types can be copied here without overrun.
         */
        ossl_intmax_t i;
        ossl_uintmax_t u;
        double d;
    } num;
} OSSL_PARAM_BLD_DEF;

DEFINE_STACK_OF(OSSL_PARAM_BLD_DEF)

struct ossl_param_bld_st {
    size_t total_blocks;
    size_t secure_blocks;
    STACK_OF(OSSL_PARAM_BLD_DEF) *params;
};

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 = OPENSSL_zalloc(sizeof(*pd));

    if (pd == NULL) {
        ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
        return NULL;
    }
    pd->key = key;
    pd->type = type;
    pd->size = size;
    pd->alloc_blocks = ossl_param_bytes_to_blocks(alloc);
    if ((pd->secure = secure) != 0)
        bld->secure_blocks += pd->alloc_blocks;
    else
        bld->total_blocks += pd->alloc_blocks;
    if (sk_OSSL_PARAM_BLD_DEF_push(bld->params, pd) <= 0) {
        OPENSSL_free(pd);
        pd = NULL;
    }
    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) {
        ERR_raise(ERR_LIB_CRYPTO, ERR_R_PASSED_NULL_PARAMETER);
        return 0;
    }
    if (size > sizeof(pd->num)) {
        ERR_raise(ERR_LIB_CRYPTO, CRYPTO_R_TOO_MANY_BYTES);
        return 0;
    }
    memcpy(&pd->num, num, size);
    return 1;
}

OSSL_PARAM_BLD *OSSL_PARAM_BLD_new(void)
{
    OSSL_PARAM_BLD *r = OPENSSL_zalloc(sizeof(OSSL_PARAM_BLD));

    if (r != NULL) {
        r->params = sk_OSSL_PARAM_BLD_DEF_new_null();
        if (r->params == NULL) {
            OPENSSL_free(r);
            r = NULL;
        }
    }
    return r;
}

static void free_all_params(OSSL_PARAM_BLD *bld)
{
    int i, n = sk_OSSL_PARAM_BLD_DEF_num(bld->params);

    for (i = 0; i < n; i++)
        OPENSSL_free(sk_OSSL_PARAM_BLD_DEF_pop(bld->params));
}

void OSSL_PARAM_BLD_free(OSSL_PARAM_BLD *bld)
{
    if (bld == NULL)
        return;
    free_all_params(bld);
    sk_OSSL_PARAM_BLD_DEF_free(bld->params);
    OPENSSL_free(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_time_t(OSSL_PARAM_BLD *bld, const char *key,
                               time_t num)
{
    return param_push_num(bld, key, &num, sizeof(num),
                          OSSL_PARAM_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) {
        if (BN_is_negative(bn)) {
            ERR_raise_data(ERR_LIB_CRYPTO, ERR_R_UNSUPPORTED,
                           "Negative big numbers are unsupported for OSSL_PARAM");
            return 0;
        }

        n = BN_num_bytes(bn);
        if (n < 0) {
            ERR_raise(ERR_LIB_CRYPTO, CRYPTO_R_ZERO_LENGTH_NUMBER);
            return 0;
        }
        if (sz < (size_t)n) {
            ERR_raise(ERR_LIB_CRYPTO, 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;
    int secure;

    if (bsize == 0) {
        bsize = strlen(buf);
    } else if (bsize > INT_MAX) {
        ERR_raise(ERR_LIB_CRYPTO, CRYPTO_R_STRING_TOO_LONG);
        return 0;
    }
    secure = CRYPTO_secure_allocated(buf);
    pd = param_push(bld, key, bsize, bsize + 1, OSSL_PARAM_UTF8_STRING, secure);
    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);
    } else if (bsize > INT_MAX) {
        ERR_raise(ERR_LIB_CRYPTO, 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;
    int secure;

    if (bsize > INT_MAX) {
        ERR_raise(ERR_LIB_CRYPTO, CRYPTO_R_STRING_TOO_LONG);
        return 0;
    }
    secure = CRYPTO_secure_allocated(buf);
    pd = param_push(bld, key, bsize, bsize, OSSL_PARAM_OCTET_STRING, secure);
    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) {
        ERR_raise(ERR_LIB_CRYPTO, 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_ALIGNED_BLOCK *blk,
                                     OSSL_PARAM_ALIGNED_BLOCK *secure)
{
    int i, num = sk_OSSL_PARAM_BLD_DEF_num(bld->params);
    OSSL_PARAM_BLD_DEF *pd;
    void *p;

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

        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);
            if (pd->type == OSSL_PARAM_UTF8_STRING)
                ((char *)p)[pd->size] = '\0';
        } 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_ALIGNED_BLOCK *blk, *s = NULL;
    OSSL_PARAM *params, *last;
    const int num = sk_OSSL_PARAM_BLD_DEF_num(bld->params);
    const size_t p_blks = ossl_param_bytes_to_blocks((1 + num) * sizeof(*params));
    const size_t total = OSSL_PARAM_ALIGN_SIZE * (p_blks + bld->total_blocks);
    const size_t ss = OSSL_PARAM_ALIGN_SIZE * bld->secure_blocks;

    if (ss > 0) {
        s = OPENSSL_secure_malloc(ss);
        if (s == NULL) {
            ERR_raise(ERR_LIB_CRYPTO, CRYPTO_R_SECURE_MALLOC_FAILURE);
            return NULL;
        }
    }
    params = OPENSSL_malloc(total);
    if (params == NULL) {
        ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
        OPENSSL_secure_free(s);
        return NULL;
    }
    blk = p_blks + (OSSL_PARAM_ALIGNED_BLOCK *)(params);
    last = param_bld_convert(bld, params, blk, s);
    ossl_param_set_secure_block(last, s, ss);

    /* Reset builder for reuse */
    bld->total_blocks = 0;
    bld->secure_blocks = 0;
    free_all_params(bld);
    return params;
}
Commit	Line	Data
3c93fbac	1	/*
8020d79b	2	* Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved.
3c93fbac P	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>
6d4e6009	15	#include <openssl/types.h>
20c98cd4	16	#include <openssl/safestack.h>
884314ca	17	#include "internal/param_build_set.h"
3c93fbac	18
6d4e6009 P	19	/*
	20	* Special internal param type to indicate the end of an allocate OSSL_PARAM
	21	* array.
	22	*/
7312ef3f	23
6d4e6009 P	24	typedef struct {
	25	const char *key;
	26	int type;
	27	int secure;
	28	size_t size;
	29	size_t alloc_blocks;
	30	const BIGNUM *bn;
	31	const void *string;
	32	union {
	33	/*
	34	* These fields are never directly addressed, but their sizes are
	35	* imporant so that all native types can be copied here without overrun.
	36	*/
	37	ossl_intmax_t i;
	38	ossl_uintmax_t u;
	39	double d;
	40	} num;
	41	} OSSL_PARAM_BLD_DEF;
	42
20c98cd4 P	43	DEFINE_STACK_OF(OSSL_PARAM_BLD_DEF)
20c98cd4 P	44
6d4e6009	45	struct ossl_param_bld_st {
6d4e6009 P	46	size_t total_blocks;
6d4e6009 P	47	size_t secure_blocks;
20c98cd4	48	STACK_OF(OSSL_PARAM_BLD_DEF) *params;
6d4e6009 P	49	};
6d4e6009 P	50
3c93fbac P	51	static OSSL_PARAM_BLD_DEF param_push(OSSL_PARAM_BLD bld, const char *key,
	52	int size, size_t alloc, int type,
	53	int secure)
	54	{
20c98cd4	55	OSSL_PARAM_BLD_DEF pd = OPENSSL_zalloc(sizeof(pd));
3c93fbac	56
20c98cd4	57	if (pd == NULL) {
9311d0c4	58	ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
3c93fbac P	59	return NULL;
3c93fbac P	60	}
3c93fbac P	61	pd->key = key;
	62	pd->type = type;
	63	pd->size = size;
884314ca	64	pd->alloc_blocks = ossl_param_bytes_to_blocks(alloc);
3c93fbac P	65	if ((pd->secure = secure) != 0)
	66	bld->secure_blocks += pd->alloc_blocks;
	67	else
	68	bld->total_blocks += pd->alloc_blocks;
20c98cd4 P	69	if (sk_OSSL_PARAM_BLD_DEF_push(bld->params, pd) <= 0) {
	70	OPENSSL_free(pd);
	71	pd = NULL;
	72	}
3c93fbac P	73	return pd;
	74	}
	75
	76	static int param_push_num(OSSL_PARAM_BLD bld, const char key,
	77	void *num, size_t size, int type)
	78	{
	79	OSSL_PARAM_BLD_DEF *pd = param_push(bld, key, size, size, type, 0);
	80
3831351d P	81	if (pd == NULL) {
3831351d P	82	ERR_raise(ERR_LIB_CRYPTO, ERR_R_PASSED_NULL_PARAMETER);
3c93fbac	83	return 0;
3831351d	84	}
3c93fbac	85	if (size > sizeof(pd->num)) {
9311d0c4	86	ERR_raise(ERR_LIB_CRYPTO, CRYPTO_R_TOO_MANY_BYTES);
3c93fbac P	87	return 0;
	88	}
	89	memcpy(&pd->num, num, size);
	90	return 1;
	91	}
	92
6d4e6009	93	OSSL_PARAM_BLD *OSSL_PARAM_BLD_new(void)
3c93fbac	94	{
20c98cd4 P	95	OSSL_PARAM_BLD *r = OPENSSL_zalloc(sizeof(OSSL_PARAM_BLD));
	96
	97	if (r != NULL) {
	98	r->params = sk_OSSL_PARAM_BLD_DEF_new_null();
	99	if (r->params == NULL) {
	100	OPENSSL_free(r);
	101	r = NULL;
	102	}
	103	}
	104	return r;
	105	}
	106
	107	static void free_all_params(OSSL_PARAM_BLD *bld)
	108	{
	109	int i, n = sk_OSSL_PARAM_BLD_DEF_num(bld->params);
	110
	111	for (i = 0; i < n; i++)
	112	OPENSSL_free(sk_OSSL_PARAM_BLD_DEF_pop(bld->params));
6d4e6009 P	113	}
	114
	115	void OSSL_PARAM_BLD_free(OSSL_PARAM_BLD *bld)
	116	{
a6f8a834 MC	117	if (bld == NULL)
a6f8a834 MC	118	return;
20c98cd4 P	119	free_all_params(bld);
20c98cd4 P	120	sk_OSSL_PARAM_BLD_DEF_free(bld->params);
6d4e6009	121	OPENSSL_free(bld);
3c93fbac P	122	}
3c93fbac P	123
110bff61	124	int OSSL_PARAM_BLD_push_int(OSSL_PARAM_BLD bld, const char key, int num)
3c93fbac P	125	{
	126	return param_push_num(bld, key, &num, sizeof(num), OSSL_PARAM_INTEGER);
	127	}
	128
110bff61	129	int OSSL_PARAM_BLD_push_uint(OSSL_PARAM_BLD bld, const char key,
3c93fbac P	130	unsigned int num)
	131	{
	132	return param_push_num(bld, key, &num, sizeof(num),
	133	OSSL_PARAM_UNSIGNED_INTEGER);
	134	}
	135
110bff61	136	int OSSL_PARAM_BLD_push_long(OSSL_PARAM_BLD bld, const char key,
3c93fbac P	137	long int num)
	138	{
	139	return param_push_num(bld, key, &num, sizeof(num), OSSL_PARAM_INTEGER);
	140	}
	141
110bff61	142	int OSSL_PARAM_BLD_push_ulong(OSSL_PARAM_BLD bld, const char key,
3c93fbac P	143	unsigned long int num)
	144	{
	145	return param_push_num(bld, key, &num, sizeof(num),
	146	OSSL_PARAM_UNSIGNED_INTEGER);
	147	}
	148
110bff61	149	int OSSL_PARAM_BLD_push_int32(OSSL_PARAM_BLD bld, const char key,
3c93fbac P	150	int32_t num)
	151	{
	152	return param_push_num(bld, key, &num, sizeof(num), OSSL_PARAM_INTEGER);
	153	}
	154
110bff61	155	int OSSL_PARAM_BLD_push_uint32(OSSL_PARAM_BLD bld, const char key,
3c93fbac P	156	uint32_t num)
	157	{
	158	return param_push_num(bld, key, &num, sizeof(num),
	159	OSSL_PARAM_UNSIGNED_INTEGER);
	160	}
	161
110bff61	162	int OSSL_PARAM_BLD_push_int64(OSSL_PARAM_BLD bld, const char key,
3c93fbac P	163	int64_t num)
	164	{
	165	return param_push_num(bld, key, &num, sizeof(num), OSSL_PARAM_INTEGER);
	166	}
	167
110bff61	168	int OSSL_PARAM_BLD_push_uint64(OSSL_PARAM_BLD bld, const char key,
3c93fbac P	169	uint64_t num)
	170	{
	171	return param_push_num(bld, key, &num, sizeof(num),
	172	OSSL_PARAM_UNSIGNED_INTEGER);
	173	}
	174
110bff61	175	int OSSL_PARAM_BLD_push_size_t(OSSL_PARAM_BLD bld, const char key,
3c93fbac P	176	size_t num)
	177	{
	178	return param_push_num(bld, key, &num, sizeof(num),
	179	OSSL_PARAM_UNSIGNED_INTEGER);
	180	}
	181
5fdaa38f P	182	int OSSL_PARAM_BLD_push_time_t(OSSL_PARAM_BLD bld, const char key,
	183	time_t num)
	184	{
	185	return param_push_num(bld, key, &num, sizeof(num),
	186	OSSL_PARAM_INTEGER);
	187	}
	188
110bff61	189	int OSSL_PARAM_BLD_push_double(OSSL_PARAM_BLD bld, const char key,
3c93fbac P	190	double num)
	191	{
	192	return param_push_num(bld, key, &num, sizeof(num), OSSL_PARAM_REAL);
	193	}
	194
110bff61	195	int OSSL_PARAM_BLD_push_BN(OSSL_PARAM_BLD bld, const char key,
3c93fbac P	196	const BIGNUM *bn)
3c93fbac P	197	{
110bff61	198	return OSSL_PARAM_BLD_push_BN_pad(bld, key, bn,
ac23078b P	199	bn == NULL ? 0 : BN_num_bytes(bn));
	200	}
	201
110bff61	202	int OSSL_PARAM_BLD_push_BN_pad(OSSL_PARAM_BLD bld, const char key,
ac23078b P	203	const BIGNUM *bn, size_t sz)
	204	{
	205	int n, secure = 0;
3c93fbac P	206	OSSL_PARAM_BLD_DEF *pd;
	207
	208	if (bn != NULL) {
db65eabe RL	209	if (BN_is_negative(bn)) {
	210	ERR_raise_data(ERR_LIB_CRYPTO, ERR_R_UNSUPPORTED,
	211	"Negative big numbers are unsupported for OSSL_PARAM");
	212	return 0;
	213	}
	214
ac23078b P	215	n = BN_num_bytes(bn);
ac23078b P	216	if (n < 0) {
9311d0c4	217	ERR_raise(ERR_LIB_CRYPTO, CRYPTO_R_ZERO_LENGTH_NUMBER);
ac23078b P	218	return 0;
	219	}
	220	if (sz < (size_t)n) {
9311d0c4	221	ERR_raise(ERR_LIB_CRYPTO, CRYPTO_R_TOO_SMALL_BUFFER);
3c93fbac P	222	return 0;
	223	}
	224	if (BN_get_flags(bn, BN_FLG_SECURE) == BN_FLG_SECURE)
	225	secure = 1;
	226	}
ac23078b	227	pd = param_push(bld, key, sz, sz, OSSL_PARAM_UNSIGNED_INTEGER, secure);
3c93fbac P	228	if (pd == NULL)
	229	return 0;
	230	pd->bn = bn;
	231	return 1;
	232	}
	233
110bff61	234	int OSSL_PARAM_BLD_push_utf8_string(OSSL_PARAM_BLD bld, const char key,
5fa7789f	235	const char *buf, size_t bsize)
3c93fbac P	236	{
3c93fbac P	237	OSSL_PARAM_BLD_DEF *pd;
b6b55ad9	238	int secure;
3c93fbac P	239
3c93fbac P	240	if (bsize == 0) {
6be27456	241	bsize = strlen(buf);
3c93fbac	242	} else if (bsize > INT_MAX) {
9311d0c4	243	ERR_raise(ERR_LIB_CRYPTO, CRYPTO_R_STRING_TOO_LONG);
3c93fbac P	244	return 0;
3c93fbac P	245	}
b6b55ad9 P	246	secure = CRYPTO_secure_allocated(buf);
b6b55ad9 P	247	pd = param_push(bld, key, bsize, bsize + 1, OSSL_PARAM_UTF8_STRING, secure);
3c93fbac P	248	if (pd == NULL)
	249	return 0;
	250	pd->string = buf;
	251	return 1;
	252	}
	253
110bff61	254	int OSSL_PARAM_BLD_push_utf8_ptr(OSSL_PARAM_BLD bld, const char key,
3c93fbac P	255	char *buf, size_t bsize)
	256	{
	257	OSSL_PARAM_BLD_DEF *pd;
	258
	259	if (bsize == 0) {
6be27456	260	bsize = strlen(buf);
3c93fbac	261	} else if (bsize > INT_MAX) {
9311d0c4	262	ERR_raise(ERR_LIB_CRYPTO, CRYPTO_R_STRING_TOO_LONG);
3c93fbac P	263	return 0;
	264	}
	265	pd = param_push(bld, key, bsize, sizeof(buf), OSSL_PARAM_UTF8_PTR, 0);
	266	if (pd == NULL)
	267	return 0;
	268	pd->string = buf;
	269	return 1;
	270	}
	271
110bff61	272	int OSSL_PARAM_BLD_push_octet_string(OSSL_PARAM_BLD bld, const char key,
5fa7789f	273	const void *buf, size_t bsize)
3c93fbac P	274	{
3c93fbac P	275	OSSL_PARAM_BLD_DEF *pd;
b6b55ad9	276	int secure;
3c93fbac P	277
3c93fbac P	278	if (bsize > INT_MAX) {
9311d0c4	279	ERR_raise(ERR_LIB_CRYPTO, CRYPTO_R_STRING_TOO_LONG);
3c93fbac P	280	return 0;
3c93fbac P	281	}
b6b55ad9 P	282	secure = CRYPTO_secure_allocated(buf);
b6b55ad9 P	283	pd = param_push(bld, key, bsize, bsize, OSSL_PARAM_OCTET_STRING, secure);
3c93fbac P	284	if (pd == NULL)
	285	return 0;
	286	pd->string = buf;
	287	return 1;
	288	}
	289
110bff61	290	int OSSL_PARAM_BLD_push_octet_ptr(OSSL_PARAM_BLD bld, const char key,
3c93fbac P	291	void *buf, size_t bsize)
	292	{
	293	OSSL_PARAM_BLD_DEF *pd;
	294
	295	if (bsize > INT_MAX) {
9311d0c4	296	ERR_raise(ERR_LIB_CRYPTO, CRYPTO_R_STRING_TOO_LONG);
3c93fbac P	297	return 0;
	298	}
	299	pd = param_push(bld, key, bsize, sizeof(buf), OSSL_PARAM_OCTET_PTR, 0);
	300	if (pd == NULL)
	301	return 0;
	302	pd->string = buf;
	303	return 1;
	304	}
	305
	306	static OSSL_PARAM param_bld_convert(OSSL_PARAM_BLD bld, OSSL_PARAM *param,
884314ca SL	307	OSSL_PARAM_ALIGNED_BLOCK *blk,
884314ca SL	308	OSSL_PARAM_ALIGNED_BLOCK *secure)
3c93fbac	309	{
20c98cd4	310	int i, num = sk_OSSL_PARAM_BLD_DEF_num(bld->params);
3c93fbac P	311	OSSL_PARAM_BLD_DEF *pd;
	312	void *p;
	313
20c98cd4 P	314	for (i = 0; i < num; i++) {
20c98cd4 P	315	pd = sk_OSSL_PARAM_BLD_DEF_value(bld->params, i);
3c93fbac P	316	param[i].key = pd->key;
	317	param[i].data_type = pd->type;
	318	param[i].data_size = pd->size;
2baf2d81	319	param[i].return_size = OSSL_PARAM_UNMODIFIED;
3c93fbac P	320
	321	if (pd->secure) {
	322	p = secure;
	323	secure += pd->alloc_blocks;
	324	} else {
	325	p = blk;
	326	blk += pd->alloc_blocks;
	327	}
	328	param[i].data = p;
	329	if (pd->bn != NULL) {
	330	/* BIGNUM */
	331	BN_bn2nativepad(pd->bn, (unsigned char *)p, pd->size);
	332	} else if (pd->type == OSSL_PARAM_OCTET_PTR
	333	\|\| pd->type == OSSL_PARAM_UTF8_PTR) {
	334	/* PTR */
d32d3048	335	(const void *)p = pd->string;
3c93fbac P	336	} else if (pd->type == OSSL_PARAM_OCTET_STRING
	337	\|\| pd->type == OSSL_PARAM_UTF8_STRING) {
	338	if (pd->string != NULL)
	339	memcpy(p, pd->string, pd->size);
	340	else
	341	memset(p, 0, pd->size);
6be27456 RL	342	if (pd->type == OSSL_PARAM_UTF8_STRING)
6be27456 RL	343	((char *)p)[pd->size] = '\0';
3c93fbac P	344	} else {
	345	/* Number, but could also be a NULL BIGNUM */
	346	if (pd->size > sizeof(pd->num))
	347	memset(p, 0, pd->size);
	348	else if (pd->size > 0)
	349	memcpy(p, &pd->num, pd->size);
	350	}
	351	}
	352	param[i] = OSSL_PARAM_construct_end();
7312ef3f	353	return param + i;
3c93fbac P	354	}
3c93fbac P	355
110bff61	356	OSSL_PARAM OSSL_PARAM_BLD_to_param(OSSL_PARAM_BLD bld)
3c93fbac	357	{
884314ca	358	OSSL_PARAM_ALIGNED_BLOCK blk, s = NULL;
7312ef3f	359	OSSL_PARAM params, last;
20c98cd4	360	const int num = sk_OSSL_PARAM_BLD_DEF_num(bld->params);
884314ca SL	361	const size_t p_blks = ossl_param_bytes_to_blocks((1 + num) * sizeof(*params));
	362	const size_t total = OSSL_PARAM_ALIGN_SIZE * (p_blks + bld->total_blocks);
	363	const size_t ss = OSSL_PARAM_ALIGN_SIZE * bld->secure_blocks;
3c93fbac	364
7312ef3f P	365	if (ss > 0) {
7312ef3f P	366	s = OPENSSL_secure_malloc(ss);
3c93fbac	367	if (s == NULL) {
9311d0c4	368	ERR_raise(ERR_LIB_CRYPTO, CRYPTO_R_SECURE_MALLOC_FAILURE);
3c93fbac P	369	return NULL;
	370	}
	371	}
7312ef3f P	372	params = OPENSSL_malloc(total);
7312ef3f P	373	if (params == NULL) {
9311d0c4	374	ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
3c93fbac P	375	OPENSSL_secure_free(s);
	376	return NULL;
	377	}
884314ca	378	blk = p_blks + (OSSL_PARAM_ALIGNED_BLOCK *)(params);
7312ef3f	379	last = param_bld_convert(bld, params, blk, s);
884314ca	380	ossl_param_set_secure_block(last, s, ss);
6d4e6009	381
20c98cd4 P	382	/* Reset builder for reuse */
	383	bld->total_blocks = 0;
	384	bld->secure_blocks = 0;
	385	free_all_params(bld);
7312ef3f P	386	return params;
7312ef3f P	387	}