[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(CONF_VALUE *a, LHASH *conf);
static void value_free_stack(CONF_VALUE *a,LHASH *conf);
static IMPLEMENT_LHASH_DOALL_ARG_FN(value_free_hash, CONF_VALUE *, LHASH *)
static IMPLEMENT_LHASH_DOALL_ARG_FN(value_free_stack, CONF_VALUE *, LHASH *)
/* We don't use function pointer casting or wrapper functions - but cast each
 * callback parameter inside the callback functions. */
/* static unsigned long hash(CONF_VALUE *v); */
static unsigned long hash(const void *v_void);
/* static int cmp_conf(CONF_VALUE *a,CONF_VALUE *b); */
static int cmp_conf(const void *a_void,const void *b_void);

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

	if ((conf == NULL) || (section == NULL)) return(NULL);
	vv.name=NULL;
	vv.section=section;
	v=(CONF_VALUE *)lh_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(CONF *conf, 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 = (CONF_VALUE *)lh_insert(conf->data, value);
	if (v != NULL)
		{
		sk_CONF_VALUE_delete_ptr(ts,v);
		OPENSSL_free(v->name);
		OPENSSL_free(v->value);
		OPENSSL_free(v);
		}
	return 1;
	}

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

	if (name == NULL) return(NULL);
	if (conf != NULL)
		{
		if (section != NULL)
			{
			vv.name=name;
			vv.section=section;
			v=(CONF_VALUE *)lh_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=name;
		v=(CONF_VALUE *)lh_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

int _CONF_new_data(CONF *conf)
	{
	if (conf == NULL)
		{
		return 0;
		}
	if (conf->data == NULL)
		if ((conf->data = lh_new(hash, cmp_conf)) == NULL)
			{
			return 0;
			}
	return 1;
	}

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

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

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

	lh_doall_arg(conf->data, LHASH_DOALL_ARG_FN(value_free_stack),
			conf->data);
	lh_free(conf->data);
	}

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

static void value_free_stack(CONF_VALUE *a, LHASH *conf)
	{
	CONF_VALUE *vv;
	STACK *sk;
	int i;

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

	sk=(STACK *)a->value;
	for (i=sk_num(sk)-1; i>=0; i--)
		{
		vv=(CONF_VALUE *)sk_value(sk,i);
		OPENSSL_free(vv->value);
		OPENSSL_free(vv->name);
		OPENSSL_free(vv);
		}
	if (sk != NULL) sk_free(sk);
	OPENSSL_free(a->section);
	OPENSSL_free(a);
	}

/* static unsigned long hash(CONF_VALUE *v) */
static unsigned long hash(const void *v_void)
	{
	CONF_VALUE *v = (CONF_VALUE *)v_void;
	return((lh_strhash(v->section)<<2)^lh_strhash(v->name));
	}

/* static int cmp_conf(CONF_VALUE *a, CONF_VALUE *b) */
static int cmp_conf(const void *a_void,const  void *b_void)
	{
	int i;
	CONF_VALUE *a = (CONF_VALUE *)a_void;
	CONF_VALUE *b = (CONF_VALUE *)b_void;

	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);
	}

/* Up until OpenSSL 0.9.5a, this was new_section */
CONF_VALUE *_CONF_new_section(CONF *conf, char *section)
	{
	STACK *sk=NULL;
	int ok=0,i;
	CONF_VALUE *v=NULL,*vv;

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

	memcpy(v->section,section,i);
	v->name=NULL;
	v->value=(char *)sk;
	
	vv=(CONF_VALUE *)lh_insert(conf->data,v);
	assert(vv == NULL);
	ok=1;
err:
	if (!ok)
		{
		if (sk != NULL) sk_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 RL	71
	72	static void value_free_hash(CONF_VALUE a, LHASH conf);
	73	static void value_free_stack(CONF_VALUE a,LHASH conf);
3c914840 GT	74	static IMPLEMENT_LHASH_DOALL_ARG_FN(value_free_hash, CONF_VALUE , LHASH )
3c914840 GT	75	static IMPLEMENT_LHASH_DOALL_ARG_FN(value_free_stack, CONF_VALUE , LHASH )
d0fa136c GT	76	/* We don't use function pointer casting or wrapper functions - but cast each
	77	* callback parameter inside the callback functions. */
	78	/* static unsigned long hash(CONF_VALUE v); /
8d28d5f8	79	static unsigned long hash(const void *v_void);
d0fa136c	80	/* static int cmp_conf(CONF_VALUE a,CONF_VALUE b); */
8d28d5f8	81	static int cmp_conf(const void a_void,const void b_void);
97b17195	82
21346b7a	83	/* Up until OpenSSL 0.9.5a, this was get_section */
d86b6915 RL	84	CONF_VALUE _CONF_get_section(CONF conf, char *section)
	85	{
	86	CONF_VALUE *v,vv;
	87
	88	if ((conf == NULL) \|\| (section == NULL)) return(NULL);
	89	vv.name=NULL;
	90	vv.section=section;
	91	v=(CONF_VALUE *)lh_retrieve(conf->data,&vv);
	92	return(v);
	93	}
	94
21346b7a	95	/* Up until OpenSSL 0.9.5a, this was CONF_get_section */
d86b6915 RL	96	STACK_OF(CONF_VALUE) _CONF_get_section_values(CONF conf, char *section)
	97	{
	98	CONF_VALUE *v;
	99
	100	v=_CONF_get_section(conf,section);
	101	if (v != NULL)
	102	return((STACK_OF(CONF_VALUE) *)v->value);
	103	else
	104	return(NULL);
	105	}
	106
	107	int _CONF_add_string(CONF conf, CONF_VALUE section, CONF_VALUE *value)
	108	{
	109	CONF_VALUE *v = NULL;
	110	STACK_OF(CONF_VALUE) *ts;
	111
	112	ts = (STACK_OF(CONF_VALUE) *)section->value;
	113
	114	value->section=section->section;
	115	if (!sk_CONF_VALUE_push(ts,value))
	116	{
	117	return 0;
	118	}
	119
	120	v = (CONF_VALUE *)lh_insert(conf->data, value);
	121	if (v != NULL)
	122	{
	123	sk_CONF_VALUE_delete_ptr(ts,v);
26a3a48d RL	124	OPENSSL_free(v->name);
	125	OPENSSL_free(v->value);
	126	OPENSSL_free(v);
d86b6915 RL	127	}
	128	return 1;
	129	}
	130
	131	char _CONF_get_string(CONF conf, char section, char name)
	132	{
	133	CONF_VALUE *v,vv;
	134	char *p;
	135
	136	if (name == NULL) return(NULL);
	137	if (conf != NULL)
	138	{
	139	if (section != NULL)
	140	{
	141	vv.name=name;
	142	vv.section=section;
	143	v=(CONF_VALUE *)lh_retrieve(conf->data,&vv);
	144	if (v != NULL) return(v->value);
	145	if (strcmp(section,"ENV") == 0)
	146	{
	147	p=Getenv(name);
	148	if (p != NULL) return(p);
	149	}
	150	}
	151	vv.section="default";
	152	vv.name=name;
	153	v=(CONF_VALUE *)lh_retrieve(conf->data,&vv);
	154	if (v != NULL)
	155	return(v->value);
	156	else
	157	return(NULL);
	158	}
	159	else
	160	return(Getenv(name));
	161	}
	162
c6f1787b RL	163	#if 0 /* There's no way to provide error checking with this function, so
	164	force implementors of the higher levels to get a string and read
	165	the number themselves. */
d86b6915 RL	166	long _CONF_get_number(CONF conf, char section, char *name)
	167	{
	168	char *str;
	169	long ret=0;
	170
	171	str=_CONF_get_string(conf,section,name);
	172	if (str == NULL) return(0);
	173	for (;;)
	174	{
	175	if (conf->meth->is_number(conf, *str))
	176	ret=ret10+conf->meth->to_int(conf, str);
	177	else
	178	return(ret);
	179	str++;
	180	}
	181	}
c6f1787b	182	#endif
d86b6915 RL	183
	184	int _CONF_new_data(CONF *conf)
	185	{
	186	if (conf == NULL)
	187	{
	188	return 0;
	189	}
	190	if (conf->data == NULL)
d0fa136c	191	if ((conf->data = lh_new(hash, cmp_conf)) == NULL)
d86b6915 RL	192	{
	193	return 0;
	194	}
	195	return 1;
	196	}
	197
	198	void _CONF_free_data(CONF *conf)
	199	{
	200	if (conf == NULL \|\| conf->data == NULL) return;
	201
26a3a48d	202	conf->data->down_load=0; /* evil thing to make sure the 'OPENSSL_free()'
d86b6915	203	* works as expected */
3c914840	204	lh_doall_arg(conf->data, LHASH_DOALL_ARG_FN(value_free_hash),
385d8138	205	conf->data);
d86b6915 RL	206
	207	/* We now have only 'section' entries in the hash table.
	208	* Due to problems with */
	209
3c914840	210	lh_doall_arg(conf->data, LHASH_DOALL_ARG_FN(value_free_stack),
385d8138	211	conf->data);
d86b6915 RL	212	lh_free(conf->data);
	213	}
	214
	215	static void value_free_hash(CONF_VALUE a, LHASH conf)
	216	{
	217	if (a->name != NULL)
	218	{
	219	a=(CONF_VALUE *)lh_delete(conf,a);
	220	}
	221	}
	222
	223	static void value_free_stack(CONF_VALUE a, LHASH conf)
	224	{
	225	CONF_VALUE *vv;
	226	STACK *sk;
	227	int i;
	228
	229	if (a->name != NULL) return;
	230
	231	sk=(STACK *)a->value;
	232	for (i=sk_num(sk)-1; i>=0; i--)
	233	{
	234	vv=(CONF_VALUE *)sk_value(sk,i);
26a3a48d RL	235	OPENSSL_free(vv->value);
	236	OPENSSL_free(vv->name);
	237	OPENSSL_free(vv);
d86b6915 RL	238	}
d86b6915 RL	239	if (sk != NULL) sk_free(sk);
26a3a48d RL	240	OPENSSL_free(a->section);
26a3a48d RL	241	OPENSSL_free(a);
d86b6915 RL	242	}
d86b6915 RL	243
d0fa136c	244	/* static unsigned long hash(CONF_VALUE v) /
8d28d5f8	245	static unsigned long hash(const void *v_void)
d86b6915	246	{
d0fa136c	247	CONF_VALUE v = (CONF_VALUE )v_void;
d86b6915 RL	248	return((lh_strhash(v->section)<<2)^lh_strhash(v->name));
	249	}
	250
d0fa136c	251	/* static int cmp_conf(CONF_VALUE a, CONF_VALUE b) */
8d28d5f8	252	static int cmp_conf(const void a_void,const void b_void)
d86b6915 RL	253	{
d86b6915 RL	254	int i;
d0fa136c GT	255	CONF_VALUE a = (CONF_VALUE )a_void;
d0fa136c GT	256	CONF_VALUE b = (CONF_VALUE )b_void;
d86b6915 RL	257
	258	if (a->section != b->section)
	259	{
	260	i=strcmp(a->section,b->section);
	261	if (i) return(i);
	262	}
	263
	264	if ((a->name != NULL) && (b->name != NULL))
	265	{
	266	i=strcmp(a->name,b->name);
	267	return(i);
	268	}
	269	else if (a->name == b->name)
	270	return(0);
	271	else
	272	return((a->name == NULL)?-1:1);
	273	}
	274
21346b7a	275	/* Up until OpenSSL 0.9.5a, this was new_section */
d86b6915 RL	276	CONF_VALUE _CONF_new_section(CONF conf, char *section)
	277	{
	278	STACK *sk=NULL;
	279	int ok=0,i;
	280	CONF_VALUE v=NULL,vv;
	281
	282	if ((sk=sk_new_null()) == NULL)
	283	goto err;
26a3a48d	284	if ((v=(CONF_VALUE *)OPENSSL_malloc(sizeof(CONF_VALUE))) == NULL)
d86b6915 RL	285	goto err;
d86b6915 RL	286	i=strlen(section)+1;
26a3a48d	287	if ((v->section=(char *)OPENSSL_malloc(i)) == NULL)
d86b6915 RL	288	goto err;
	289
	290	memcpy(v->section,section,i);
	291	v->name=NULL;
	292	v->value=(char *)sk;
	293
	294	vv=(CONF_VALUE *)lh_insert(conf->data,v);
bbb8de09	295	assert(vv == NULL);
d86b6915 RL	296	ok=1;
	297	err:
	298	if (!ok)
	299	{
	300	if (sk != NULL) sk_free(sk);
26a3a48d	301	if (v != NULL) OPENSSL_free(v);
d86b6915 RL	302	v=NULL;
	303	}
	304	return(v);
	305	}
	306
	307	IMPLEMENT_STACK_OF(CONF_VALUE)