[thirdparty/openssl.git] / crypto / conf / conf_api.c

/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 *
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 *
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 *
 * 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 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 *
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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 AUTHOR 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.
 *
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

/* Part of the code in here was originally in conf.c, which is now removed */

#include <stdlib.h>
#include <string.h>
#include <openssl/conf.h>
#include <openssl/conf_api.h>
#include "e_os.h"

static void value_free_hash(const CONF_VALUE *a, LHASH_OF(CONF_VALUE) *conf);
static void value_free_stack_doall(CONF_VALUE *a);

/* Up until OpenSSL 0.9.5a, this was get_section */
CONF_VALUE *_CONF_get_section(const CONF *conf, const char *section)
{
    CONF_VALUE *v, vv;

    if ((conf == NULL) || (section == NULL))
        return (NULL);
    vv.name = NULL;
    vv.section = (char *)section;
    v = lh_CONF_VALUE_retrieve(conf->data, &vv);
    return (v);
}

/* Up until OpenSSL 0.9.5a, this was CONF_get_section */
STACK_OF(CONF_VALUE) *_CONF_get_section_values(const CONF *conf,
                                               const char *section)
{
    CONF_VALUE *v;

    v = _CONF_get_section(conf, section);
    if (v != NULL)
        return ((STACK_OF(CONF_VALUE) *)v->value);
    else
        return (NULL);
}

int _CONF_add_string(CONF *conf, CONF_VALUE *section, CONF_VALUE *value)
{
    CONF_VALUE *v = NULL;
    STACK_OF(CONF_VALUE) *ts;

    ts = (STACK_OF(CONF_VALUE) *)section->value;

    value->section = section->section;
    if (!sk_CONF_VALUE_push(ts, value)) {
        return 0;
    }

    v = lh_CONF_VALUE_insert(conf->data, value);
    if (v != NULL) {
        (void)sk_CONF_VALUE_delete_ptr(ts, v);
        OPENSSL_free(v->name);
        OPENSSL_free(v->value);
        OPENSSL_free(v);
    }
    return 1;
}

char *_CONF_get_string(const CONF *conf, const char *section,
                       const char *name)
{
    CONF_VALUE *v, vv;
    char *p;

    if (name == NULL)
        return (NULL);
    if (conf != NULL) {
        if (section != NULL) {
            vv.name = (char *)name;
            vv.section = (char *)section;
            v = lh_CONF_VALUE_retrieve(conf->data, &vv);
            if (v != NULL)
                return (v->value);
            if (strcmp(section, "ENV") == 0) {
                p = getenv(name);
                if (p != NULL)
                    return (p);
            }
        }
        vv.section = "default";
        vv.name = (char *)name;
        v = lh_CONF_VALUE_retrieve(conf->data, &vv);
        if (v != NULL)
            return (v->value);
        else
            return (NULL);
    } else
        return (getenv(name));
}

static unsigned long conf_value_hash(const CONF_VALUE *v)
{
    return (lh_strhash(v->section) << 2) ^ lh_strhash(v->name);
}

static int conf_value_cmp(const CONF_VALUE *a, const CONF_VALUE *b)
{
    int i;

    if (a->section != b->section) {
        i = strcmp(a->section, b->section);
        if (i)
            return (i);
    }

    if ((a->name != NULL) && (b->name != NULL)) {
        i = strcmp(a->name, b->name);
        return (i);
    } else if (a->name == b->name)
        return (0);
    else
        return ((a->name == NULL) ? -1 : 1);
}

int _CONF_new_data(CONF *conf)
{
    if (conf == NULL) {
        return 0;
    }
    if (conf->data == NULL) {
        conf->data = lh_CONF_VALUE_new(conf_value_hash, conf_value_cmp);
        if (conf->data == NULL)
            return 0;
    }
    return 1;
}

typedef LHASH_OF(CONF_VALUE) LH_CONF_VALUE;

IMPLEMENT_LHASH_DOALL_ARG_CONST(CONF_VALUE, LH_CONF_VALUE);

void _CONF_free_data(CONF *conf)
{
    if (conf == NULL || conf->data == NULL)
        return;

    /* evil thing to make sure the 'OPENSSL_free()' works as expected */
    lh_CONF_VALUE_set_down_load(conf->data, 0);
    lh_CONF_VALUE_doall_LH_CONF_VALUE(conf->data, value_free_hash, conf->data);

    /*
     * We now have only 'section' entries in the hash table. Due to problems
     * with
     */

    lh_CONF_VALUE_doall(conf->data, value_free_stack_doall);
    lh_CONF_VALUE_free(conf->data);
}

static void value_free_hash(const CONF_VALUE *a, LHASH_OF(CONF_VALUE) *conf)
{
    if (a->name != NULL)
        (void)lh_CONF_VALUE_delete(conf, a);
}

static void value_free_stack_doall(CONF_VALUE *a)
{
    CONF_VALUE *vv;
    STACK_OF(CONF_VALUE) *sk;
    int i;

    if (a->name != NULL)
        return;

    sk = (STACK_OF(CONF_VALUE) *)a->value;
    for (i = sk_CONF_VALUE_num(sk) - 1; i >= 0; i--) {
        vv = sk_CONF_VALUE_value(sk, i);
        OPENSSL_free(vv->value);
        OPENSSL_free(vv->name);
        OPENSSL_free(vv);
    }
    sk_CONF_VALUE_free(sk);
    OPENSSL_free(a->section);
    OPENSSL_free(a);
}

/* Up until OpenSSL 0.9.5a, this was new_section */
CONF_VALUE *_CONF_new_section(CONF *conf, const char *section)
{
    STACK_OF(CONF_VALUE) *sk = NULL;
    int i;
    CONF_VALUE *v = NULL, *vv;

    if ((sk = sk_CONF_VALUE_new_null()) == NULL)
        goto err;
    if ((v = OPENSSL_malloc(sizeof(*v))) == NULL)
        goto err;
    i = strlen(section) + 1;
    if ((v->section = OPENSSL_malloc(i)) == NULL)
        goto err;

    memcpy(v->section, section, i);
    v->name = NULL;
    v->value = (char *)sk;

    vv = lh_CONF_VALUE_insert(conf->data, v);
    OPENSSL_assert(vv == NULL);
    return v;

 err:
    sk_CONF_VALUE_free(sk);
    OPENSSL_free(v);
    return NULL;
}
Commit	Line	Data
d86b6915 RL	1	/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
	2	* All rights reserved.
	3	*
	4	* This package is an SSL implementation written
	5	* by Eric Young (eay@cryptsoft.com).
	6	* The implementation was written so as to conform with Netscapes SSL.
0f113f3e	7	*
d86b6915 RL	8	* This library is free for commercial and non-commercial use as long as
	9	* the following conditions are aheared to. The following conditions
	10	* apply to all code found in this distribution, be it the RC4, RSA,
	11	* lhash, DES, etc., code; not just the SSL code. The SSL documentation
	12	* included with this distribution is covered by the same copyright terms
	13	* except that the holder is Tim Hudson (tjh@cryptsoft.com).
0f113f3e	14	*
d86b6915 RL	15	* Copyright remains Eric Young's, and as such any Copyright notices in
	16	* the code are not to be removed.
	17	* If this package is used in a product, Eric Young should be given attribution
	18	* as the author of the parts of the library used.
	19	* This can be in the form of a textual message at program startup or
	20	* in documentation (online or textual) provided with the package.
0f113f3e	21	*
d86b6915 RL	22	* Redistribution and use in source and binary forms, with or without
	23	* modification, are permitted provided that the following conditions
	24	* are met:
	25	* 1. Redistributions of source code must retain the copyright
	26	* notice, this list of conditions and the following disclaimer.
	27	* 2. Redistributions in binary form must reproduce the above copyright
	28	* notice, this list of conditions and the following disclaimer in the
	29	* documentation and/or other materials provided with the distribution.
	30	* 3. All advertising materials mentioning features or use of this software
	31	* must display the following acknowledgement:
	32	* "This product includes cryptographic software written by
	33	* Eric Young (eay@cryptsoft.com)"
	34	* The word 'cryptographic' can be left out if the rouines from the library
	35	* being used are not cryptographic related :-).
0f113f3e	36	* 4. If you include any Windows specific code (or a derivative thereof) from
d86b6915 RL	37	* the apps directory (application code) you must include an acknowledgement:
d86b6915 RL	38	* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
0f113f3e	39	*
d86b6915 RL	40	* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
	41	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	42	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	43	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	44	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	45	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	46	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	47	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	48	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	49	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	50	* SUCH DAMAGE.
0f113f3e	51	*
d86b6915 RL	52	* The licence and distribution terms for any publically available version or
	53	* derivative of this code cannot be changed. i.e. this code cannot simply be
	54	* copied and put under another distribution licence
	55	* [including the GNU Public Licence.]
	56	*/
	57
	58	/* Part of the code in here was originally in conf.c, which is now removed */
	59
2c1f5ce4	60	#include <stdlib.h>
0baed24c	61	#include <string.h>
d86b6915 RL	62	#include <openssl/conf.h>
d86b6915 RL	63	#include <openssl/conf_api.h>
62315760	64	#include "e_os.h"
d86b6915	65
2a056de8	66	static void value_free_hash(const CONF_VALUE a, LHASH_OF(CONF_VALUE) conf);
5ce278a7	67	static void value_free_stack_doall(CONF_VALUE *a);
97b17195	68
21346b7a	69	/* Up until OpenSSL 0.9.5a, this was get_section */
9dd5ae65	70	CONF_VALUE _CONF_get_section(const CONF conf, const char *section)
0f113f3e MC	71	{
0f113f3e MC	72	CONF_VALUE *v, vv;
d86b6915	73
0f113f3e MC	74	if ((conf == NULL) \|\| (section == NULL))
	75	return (NULL);
	76	vv.name = NULL;
	77	vv.section = (char *)section;
	78	v = lh_CONF_VALUE_retrieve(conf->data, &vv);
	79	return (v);
	80	}
d86b6915	81
21346b7a	82	/* Up until OpenSSL 0.9.5a, this was CONF_get_section */
9dd5ae65	83	STACK_OF(CONF_VALUE) _CONF_get_section_values(const CONF conf,
0f113f3e MC	84	const char *section)
	85	{
	86	CONF_VALUE *v;
d86b6915	87
0f113f3e MC	88	v = _CONF_get_section(conf, section);
	89	if (v != NULL)
	90	return ((STACK_OF(CONF_VALUE) *)v->value);
	91	else
	92	return (NULL);
	93	}
d86b6915 RL	94
d86b6915 RL	95	int _CONF_add_string(CONF conf, CONF_VALUE section, CONF_VALUE *value)
0f113f3e MC	96	{
	97	CONF_VALUE *v = NULL;
	98	STACK_OF(CONF_VALUE) *ts;
	99
	100	ts = (STACK_OF(CONF_VALUE) *)section->value;
	101
	102	value->section = section->section;
	103	if (!sk_CONF_VALUE_push(ts, value)) {
	104	return 0;
	105	}
	106
	107	v = lh_CONF_VALUE_insert(conf->data, value);
	108	if (v != NULL) {
	109	(void)sk_CONF_VALUE_delete_ptr(ts, v);
	110	OPENSSL_free(v->name);
	111	OPENSSL_free(v->value);
	112	OPENSSL_free(v);
	113	}
	114	return 1;
	115	}
	116
	117	char _CONF_get_string(const CONF conf, const char *section,
	118	const char *name)
	119	{
	120	CONF_VALUE *v, vv;
	121	char *p;
	122
	123	if (name == NULL)
	124	return (NULL);
	125	if (conf != NULL) {
	126	if (section != NULL) {
	127	vv.name = (char *)name;
	128	vv.section = (char *)section;
	129	v = lh_CONF_VALUE_retrieve(conf->data, &vv);
	130	if (v != NULL)
	131	return (v->value);
	132	if (strcmp(section, "ENV") == 0) {
	133	p = getenv(name);
	134	if (p != NULL)
	135	return (p);
	136	}
	137	}
	138	vv.section = "default";
	139	vv.name = (char *)name;
	140	v = lh_CONF_VALUE_retrieve(conf->data, &vv);
	141	if (v != NULL)
	142	return (v->value);
	143	else
	144	return (NULL);
	145	} else
	146	return (getenv(name));
	147	}
	148
3c1d6bbc	149	static unsigned long conf_value_hash(const CONF_VALUE *v)
0f113f3e MC	150	{
	151	return (lh_strhash(v->section) << 2) ^ lh_strhash(v->name);
	152	}
	153
3c1d6bbc	154	static int conf_value_cmp(const CONF_VALUE a, const CONF_VALUE b)
0f113f3e MC	155	{
	156	int i;
	157
	158	if (a->section != b->section) {
	159	i = strcmp(a->section, b->section);
	160	if (i)
	161	return (i);
	162	}
	163
	164	if ((a->name != NULL) && (b->name != NULL)) {
	165	i = strcmp(a->name, b->name);
	166	return (i);
	167	} else if (a->name == b->name)
	168	return (0);
	169	else
	170	return ((a->name == NULL) ? -1 : 1);
	171	}
	172
d86b6915	173	int _CONF_new_data(CONF *conf)
0f113f3e MC	174	{
	175	if (conf == NULL) {
	176	return 0;
	177	}
62d0577e DSH	178	if (conf->data == NULL) {
	179	conf->data = lh_CONF_VALUE_new(conf_value_hash, conf_value_cmp);
	180	if (conf->data == NULL)
0f113f3e	181	return 0;
62d0577e	182	}
0f113f3e MC	183	return 1;
0f113f3e MC	184	}
d86b6915	185
2a056de8 DSH	186	typedef LHASH_OF(CONF_VALUE) LH_CONF_VALUE;
	187
	188	IMPLEMENT_LHASH_DOALL_ARG_CONST(CONF_VALUE, LH_CONF_VALUE);
	189
d86b6915	190	void _CONF_free_data(CONF *conf)
0f113f3e MC	191	{
	192	if (conf == NULL \|\| conf->data == NULL)
	193	return;
	194
e6b5c341 DSH	195	/* evil thing to make sure the 'OPENSSL_free()' works as expected */
e6b5c341 DSH	196	lh_CONF_VALUE_set_down_load(conf->data, 0);
2a056de8	197	lh_CONF_VALUE_doall_LH_CONF_VALUE(conf->data, value_free_hash, conf->data);
0f113f3e MC	198
	199	/*
	200	* We now have only 'section' entries in the hash table. Due to problems
	201	* with
	202	*/
	203
63c75cd6	204	lh_CONF_VALUE_doall(conf->data, value_free_stack_doall);
0f113f3e MC	205	lh_CONF_VALUE_free(conf->data);
0f113f3e MC	206	}
d86b6915	207
2a056de8	208	static void value_free_hash(const CONF_VALUE a, LHASH_OF(CONF_VALUE) conf)
0f113f3e MC	209	{
	210	if (a->name != NULL)
	211	(void)lh_CONF_VALUE_delete(conf, a);
	212	}
d86b6915	213
5ce278a7	214	static void value_free_stack_doall(CONF_VALUE *a)
0f113f3e MC	215	{
	216	CONF_VALUE *vv;
	217	STACK_OF(CONF_VALUE) *sk;
	218	int i;
	219
	220	if (a->name != NULL)
	221	return;
	222
	223	sk = (STACK_OF(CONF_VALUE) *)a->value;
	224	for (i = sk_CONF_VALUE_num(sk) - 1; i >= 0; i--) {
	225	vv = sk_CONF_VALUE_value(sk, i);
	226	OPENSSL_free(vv->value);
	227	OPENSSL_free(vv->name);
	228	OPENSSL_free(vv);
	229	}
efa7dd64	230	sk_CONF_VALUE_free(sk);
0f113f3e MC	231	OPENSSL_free(a->section);
	232	OPENSSL_free(a);
	233	}
d86b6915	234
21346b7a	235	/* Up until OpenSSL 0.9.5a, this was new_section */
9dd5ae65	236	CONF_VALUE _CONF_new_section(CONF conf, const char *section)
0f113f3e MC	237	{
0f113f3e MC	238	STACK_OF(CONF_VALUE) *sk = NULL;
efa7dd64	239	int i;
0f113f3e MC	240	CONF_VALUE v = NULL, vv;
	241
	242	if ((sk = sk_CONF_VALUE_new_null()) == NULL)
	243	goto err;
b4faea50	244	if ((v = OPENSSL_malloc(sizeof(*v))) == NULL)
0f113f3e MC	245	goto err;
	246	i = strlen(section) + 1;
	247	if ((v->section = OPENSSL_malloc(i)) == NULL)
	248	goto err;
	249
	250	memcpy(v->section, section, i);
	251	v->name = NULL;
	252	v->value = (char *)sk;
	253
	254	vv = lh_CONF_VALUE_insert(conf->data, v);
	255	OPENSSL_assert(vv == NULL);
efa7dd64 RS	256	return v;
efa7dd64 RS	257
0f113f3e	258	err:
efa7dd64 RS	259	sk_CONF_VALUE_free(sk);
	260	OPENSSL_free(v);
	261	return NULL;
0f113f3e	262	}