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

/* 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 */

#ifndef CONF_DEBUG
# undef NDEBUG /* avoid conflicting definitions */
# define NDEBUG
#endif

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

static void value_free_hash_doall_arg(CONF_VALUE *a,
				      LHASH_OF(CONF_VALUE) *conf);
static void value_free_stack_doall(CONF_VALUE *a);
static IMPLEMENT_LHASH_DOALL_ARG_FN(value_free_hash, CONF_VALUE,
				    LHASH_OF(CONF_VALUE))
static IMPLEMENT_LHASH_DOALL_FN(value_free_stack, CONF_VALUE)

/* 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));
	}

#if 0 /* There's no way to provide error checking with this function, so
	 force implementors of the higher levels to get a string and read
	 the number themselves. */
long _CONF_get_number(CONF *conf, char *section, char *name)
	{
	char *str;
	long ret=0;

	str=_CONF_get_string(conf,section,name);
	if (str == NULL) return(0);
	for (;;)
		{
		if (conf->meth->is_number(conf, *str))
			ret=ret*10+conf->meth->to_int(conf, *str);
		else
			return(ret);
		str++;
		}
	}
#endif

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

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);
	}
static IMPLEMENT_LHASH_COMP_FN(conf_value, CONF_VALUE)

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

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

	lh_CONF_VALUE_down_load(conf->data)=0; /* evil thing to make
				  * sure the 'OPENSSL_free()' works as
				  * expected */
	lh_CONF_VALUE_doall_arg(conf->data,
				LHASH_DOALL_ARG_FN(value_free_hash),
				LHASH_OF(CONF_VALUE), conf->data);

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

	lh_CONF_VALUE_doall(conf->data, LHASH_DOALL_FN(value_free_stack));
	lh_CONF_VALUE_free(conf->data);
	}

static void value_free_hash_doall_arg(CONF_VALUE *a, LHASH_OF(CONF_VALUE) *conf)
	{
	if (a->name != NULL)
		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);
		}
	if (sk != NULL) 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 ok=0,i;
	CONF_VALUE *v=NULL,*vv;

	if ((sk=sk_CONF_VALUE_new_null()) == NULL)
		goto err;
	if ((v=OPENSSL_malloc(sizeof(CONF_VALUE))) == 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);
	assert(vv == NULL);
	ok=1;
err:
	if (!ok)
		{
		if (sk != NULL) sk_CONF_VALUE_free(sk);
		if (v != NULL) OPENSSL_free(v);
		v=NULL;
		}
	return(v);
	}

IMPLEMENT_STACK_OF(CONF_VALUE)
Commit	Line	Data
d86b6915 RL	1	/* conf_api.c */
	2	/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
	3	* All rights reserved.
	4	*
	5	* This package is an SSL implementation written
	6	* by Eric Young (eay@cryptsoft.com).
	7	* The implementation was written so as to conform with Netscapes SSL.
	8	*
	9	* This library is free for commercial and non-commercial use as long as
	10	* the following conditions are aheared to. The following conditions
	11	* apply to all code found in this distribution, be it the RC4, RSA,
	12	* lhash, DES, etc., code; not just the SSL code. The SSL documentation
	13	* included with this distribution is covered by the same copyright terms
	14	* except that the holder is Tim Hudson (tjh@cryptsoft.com).
	15	*
	16	* Copyright remains Eric Young's, and as such any Copyright notices in
	17	* the code are not to be removed.
	18	* If this package is used in a product, Eric Young should be given attribution
	19	* as the author of the parts of the library used.
	20	* This can be in the form of a textual message at program startup or
	21	* in documentation (online or textual) provided with the package.
	22	*
	23	* Redistribution and use in source and binary forms, with or without
	24	* modification, are permitted provided that the following conditions
	25	* are met:
	26	* 1. Redistributions of source code must retain the copyright
	27	* notice, this list of conditions and the following disclaimer.
	28	* 2. Redistributions in binary form must reproduce the above copyright
	29	* notice, this list of conditions and the following disclaimer in the
	30	* documentation and/or other materials provided with the distribution.
	31	* 3. All advertising materials mentioning features or use of this software
	32	* must display the following acknowledgement:
	33	* "This product includes cryptographic software written by
	34	* Eric Young (eay@cryptsoft.com)"
	35	* The word 'cryptographic' can be left out if the rouines from the library
	36	* being used are not cryptographic related :-).
	37	* 4. If you include any Windows specific code (or a derivative thereof) from
	38	* the apps directory (application code) you must include an acknowledgement:
	39	* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
	40	*
	41	* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
	42	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	43	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	44	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	45	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	46	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	47	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	48	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	49	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	50	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	51	* SUCH DAMAGE.
	52	*
	53	* The licence and distribution terms for any publically available version or
	54	* derivative of this code cannot be changed. i.e. this code cannot simply be
	55	* copied and put under another distribution licence
	56	* [including the GNU Public Licence.]
	57	*/
	58
	59	/* Part of the code in here was originally in conf.c, which is now removed */
	60
bbb8de09 BM	61	#ifndef CONF_DEBUG
	62	# undef NDEBUG /* avoid conflicting definitions */
	63	# define NDEBUG
	64	#endif
	65
	66	#include <assert.h>
0baed24c	67	#include <string.h>
d86b6915 RL	68	#include <openssl/conf.h>
d86b6915 RL	69	#include <openssl/conf_api.h>
62315760	70	#include "e_os.h"
d86b6915	71
3c1d6bbc BL	72	static void value_free_hash_doall_arg(CONF_VALUE *a,
3c1d6bbc BL	73	LHASH_OF(CONF_VALUE) *conf);
5ce278a7	74	static void value_free_stack_doall(CONF_VALUE *a);
3c1d6bbc BL	75	static IMPLEMENT_LHASH_DOALL_ARG_FN(value_free_hash, CONF_VALUE,
3c1d6bbc BL	76	LHASH_OF(CONF_VALUE))
5ce278a7	77	static IMPLEMENT_LHASH_DOALL_FN(value_free_stack, CONF_VALUE)
97b17195	78
21346b7a	79	/* Up until OpenSSL 0.9.5a, this was get_section */
9dd5ae65	80	CONF_VALUE _CONF_get_section(const CONF conf, const char *section)
d86b6915 RL	81	{
	82	CONF_VALUE *v,vv;
	83
	84	if ((conf == NULL) \|\| (section == NULL)) return(NULL);
	85	vv.name=NULL;
9dd5ae65	86	vv.section=(char *)section;
3c1d6bbc	87	v=lh_CONF_VALUE_retrieve(conf->data,&vv);
d86b6915 RL	88	return(v);
	89	}
	90
21346b7a	91	/* Up until OpenSSL 0.9.5a, this was CONF_get_section */
9dd5ae65 BL	92	STACK_OF(CONF_VALUE) _CONF_get_section_values(const CONF conf,
9dd5ae65 BL	93	const char *section)
d86b6915 RL	94	{
	95	CONF_VALUE *v;
	96
	97	v=_CONF_get_section(conf,section);
	98	if (v != NULL)
	99	return((STACK_OF(CONF_VALUE) *)v->value);
	100	else
	101	return(NULL);
	102	}
	103
	104	int _CONF_add_string(CONF conf, CONF_VALUE section, CONF_VALUE *value)
	105	{
	106	CONF_VALUE *v = NULL;
	107	STACK_OF(CONF_VALUE) *ts;
	108
	109	ts = (STACK_OF(CONF_VALUE) *)section->value;
	110
	111	value->section=section->section;
	112	if (!sk_CONF_VALUE_push(ts,value))
	113	{
	114	return 0;
	115	}
	116
3c1d6bbc	117	v = lh_CONF_VALUE_insert(conf->data, value);
d86b6915 RL	118	if (v != NULL)
d86b6915 RL	119	{
a6fbcb42	120	(void)sk_CONF_VALUE_delete_ptr(ts,v);
26a3a48d RL	121	OPENSSL_free(v->name);
	122	OPENSSL_free(v->value);
	123	OPENSSL_free(v);
d86b6915 RL	124	}
	125	return 1;
	126	}
	127
9dd5ae65	128	char _CONF_get_string(const CONF conf, const char section, const char name)
d86b6915 RL	129	{
	130	CONF_VALUE *v,vv;
	131	char *p;
	132
	133	if (name == NULL) return(NULL);
	134	if (conf != NULL)
	135	{
	136	if (section != NULL)
	137	{
9dd5ae65 BL	138	vv.name=(char *)name;
9dd5ae65 BL	139	vv.section=(char *)section;
3c1d6bbc	140	v=lh_CONF_VALUE_retrieve(conf->data,&vv);
d86b6915 RL	141	if (v != NULL) return(v->value);
	142	if (strcmp(section,"ENV") == 0)
	143	{
be7b4458	144	p=getenv(name);
d86b6915 RL	145	if (p != NULL) return(p);
	146	}
	147	}
	148	vv.section="default";
9dd5ae65	149	vv.name=(char *)name;
3c1d6bbc	150	v=lh_CONF_VALUE_retrieve(conf->data,&vv);
d86b6915 RL	151	if (v != NULL)
	152	return(v->value);
	153	else
	154	return(NULL);
	155	}
	156	else
be7b4458	157	return(getenv(name));
d86b6915 RL	158	}
d86b6915 RL	159
c6f1787b RL	160	#if 0 /* There's no way to provide error checking with this function, so
	161	force implementors of the higher levels to get a string and read
	162	the number themselves. */
d86b6915 RL	163	long _CONF_get_number(CONF conf, char section, char *name)
	164	{
	165	char *str;
	166	long ret=0;
	167
	168	str=_CONF_get_string(conf,section,name);
	169	if (str == NULL) return(0);
	170	for (;;)
	171	{
	172	if (conf->meth->is_number(conf, *str))
	173	ret=ret10+conf->meth->to_int(conf, str);
	174	else
	175	return(ret);
	176	str++;
	177	}
	178	}
c6f1787b	179	#endif
d86b6915	180
3c1d6bbc BL	181	static unsigned long conf_value_hash(const CONF_VALUE *v)
	182	{
	183	return (lh_strhash(v->section)<<2)^lh_strhash(v->name);
	184	}
	185	static IMPLEMENT_LHASH_HASH_FN(conf_value, CONF_VALUE)
	186
	187	static int conf_value_cmp(const CONF_VALUE a, const CONF_VALUE b)
	188	{
	189	int i;
	190
	191	if (a->section != b->section)
	192	{
	193	i=strcmp(a->section,b->section);
	194	if (i) return(i);
	195	}
	196
	197	if ((a->name != NULL) && (b->name != NULL))
	198	{
	199	i=strcmp(a->name,b->name);
	200	return(i);
	201	}
	202	else if (a->name == b->name)
	203	return(0);
	204	else
	205	return((a->name == NULL)?-1:1);
	206	}
	207	static IMPLEMENT_LHASH_COMP_FN(conf_value, CONF_VALUE)
	208
d86b6915 RL	209	int _CONF_new_data(CONF *conf)
	210	{
	211	if (conf == NULL)
	212	{
	213	return 0;
	214	}
	215	if (conf->data == NULL)
3c1d6bbc	216	if ((conf->data = lh_CONF_VALUE_new()) == NULL)
d86b6915 RL	217	{
	218	return 0;
	219	}
	220	return 1;
	221	}
	222
	223	void _CONF_free_data(CONF *conf)
	224	{
	225	if (conf == NULL \|\| conf->data == NULL) return;
	226
3c1d6bbc BL	227	lh_CONF_VALUE_down_load(conf->data)=0; /* evil thing to make
	228	* sure the 'OPENSSL_free()' works as
	229	* expected */
5ce278a7 BL	230	lh_CONF_VALUE_doall_arg(conf->data,
5ce278a7 BL	231	LHASH_DOALL_ARG_FN(value_free_hash),
3c1d6bbc	232	LHASH_OF(CONF_VALUE), conf->data);
d86b6915 RL	233
	234	/* We now have only 'section' entries in the hash table.
	235	* Due to problems with */
	236
5ce278a7	237	lh_CONF_VALUE_doall(conf->data, LHASH_DOALL_FN(value_free_stack));
3c1d6bbc	238	lh_CONF_VALUE_free(conf->data);
d86b6915 RL	239	}
d86b6915 RL	240
3c1d6bbc	241	static void value_free_hash_doall_arg(CONF_VALUE a, LHASH_OF(CONF_VALUE) conf)
d86b6915 RL	242	{
d86b6915 RL	243	if (a->name != NULL)
3c1d6bbc	244	lh_CONF_VALUE_delete(conf,a);
d86b6915 RL	245	}
d86b6915 RL	246
5ce278a7	247	static void value_free_stack_doall(CONF_VALUE *a)
d86b6915 RL	248	{
d86b6915 RL	249	CONF_VALUE *vv;
5ce278a7	250	STACK_OF(CONF_VALUE) *sk;
d86b6915 RL	251	int i;
	252
	253	if (a->name != NULL) return;
	254
5ce278a7 BL	255	sk=(STACK_OF(CONF_VALUE) *)a->value;
5ce278a7 BL	256	for (i=sk_CONF_VALUE_num(sk)-1; i>=0; i--)
d86b6915	257	{
5ce278a7	258	vv=sk_CONF_VALUE_value(sk,i);
26a3a48d RL	259	OPENSSL_free(vv->value);
	260	OPENSSL_free(vv->name);
	261	OPENSSL_free(vv);
d86b6915	262	}
5ce278a7	263	if (sk != NULL) sk_CONF_VALUE_free(sk);
26a3a48d RL	264	OPENSSL_free(a->section);
26a3a48d RL	265	OPENSSL_free(a);
d86b6915 RL	266	}
d86b6915 RL	267
21346b7a	268	/* Up until OpenSSL 0.9.5a, this was new_section */
9dd5ae65	269	CONF_VALUE _CONF_new_section(CONF conf, const char *section)
d86b6915	270	{
5ce278a7	271	STACK_OF(CONF_VALUE) *sk=NULL;
d86b6915 RL	272	int ok=0,i;
	273	CONF_VALUE v=NULL,vv;
	274
5ce278a7	275	if ((sk=sk_CONF_VALUE_new_null()) == NULL)
d86b6915	276	goto err;
5ce278a7	277	if ((v=OPENSSL_malloc(sizeof(CONF_VALUE))) == NULL)
d86b6915 RL	278	goto err;
d86b6915 RL	279	i=strlen(section)+1;
5ce278a7	280	if ((v->section=OPENSSL_malloc(i)) == NULL)
d86b6915 RL	281	goto err;
	282
	283	memcpy(v->section,section,i);
	284	v->name=NULL;
	285	v->value=(char *)sk;
	286
3c1d6bbc	287	vv=lh_CONF_VALUE_insert(conf->data,v);
bbb8de09	288	assert(vv == NULL);
d86b6915 RL	289	ok=1;
	290	err:
	291	if (!ok)
	292	{
5ce278a7	293	if (sk != NULL) sk_CONF_VALUE_free(sk);
26a3a48d	294	if (v != NULL) OPENSSL_free(v);
d86b6915 RL	295	v=NULL;
	296	}
	297	return(v);
	298	}
	299
	300	IMPLEMENT_STACK_OF(CONF_VALUE)