sl@0: /* conf_api.c */
sl@0: /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
sl@0:  * All rights reserved.
sl@0:  *
sl@0:  * This package is an SSL implementation written
sl@0:  * by Eric Young (eay@cryptsoft.com).
sl@0:  * The implementation was written so as to conform with Netscapes SSL.
sl@0:  * 
sl@0:  * This library is free for commercial and non-commercial use as long as
sl@0:  * the following conditions are aheared to.  The following conditions
sl@0:  * apply to all code found in this distribution, be it the RC4, RSA,
sl@0:  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
sl@0:  * included with this distribution is covered by the same copyright terms
sl@0:  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
sl@0:  * 
sl@0:  * Copyright remains Eric Young's, and as such any Copyright notices in
sl@0:  * the code are not to be removed.
sl@0:  * If this package is used in a product, Eric Young should be given attribution
sl@0:  * as the author of the parts of the library used.
sl@0:  * This can be in the form of a textual message at program startup or
sl@0:  * in documentation (online or textual) provided with the package.
sl@0:  * 
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  * 1. Redistributions of source code must retain the copyright
sl@0:  *    notice, this list of conditions and the following disclaimer.
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in the
sl@0:  *    documentation and/or other materials provided with the distribution.
sl@0:  * 3. All advertising materials mentioning features or use of this software
sl@0:  *    must display the following acknowledgement:
sl@0:  *    "This product includes cryptographic software written by
sl@0:  *     Eric Young (eay@cryptsoft.com)"
sl@0:  *    The word 'cryptographic' can be left out if the rouines from the library
sl@0:  *    being used are not cryptographic related :-).
sl@0:  * 4. If you include any Windows specific code (or a derivative thereof) from 
sl@0:  *    the apps directory (application code) you must include an acknowledgement:
sl@0:  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
sl@0:  * 
sl@0:  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
sl@0:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
sl@0:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
sl@0:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
sl@0:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
sl@0:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
sl@0:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
sl@0:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
sl@0:  * SUCH DAMAGE.
sl@0:  * 
sl@0:  * The licence and distribution terms for any publically available version or
sl@0:  * derivative of this code cannot be changed.  i.e. this code cannot simply be
sl@0:  * copied and put under another distribution licence
sl@0:  * [including the GNU Public Licence.]
sl@0:  */
sl@0: 
sl@0: /* Part of the code in here was originally in conf.c, which is now removed */
sl@0: 
sl@0: #ifndef CONF_DEBUG
sl@0: # undef NDEBUG /* avoid conflicting definitions */
sl@0: # define NDEBUG
sl@0: #endif
sl@0: 
sl@0: #include <assert.h>
sl@0: #include <string.h>
sl@0: #include <openssl/conf.h>
sl@0: #include <openssl/conf_api.h>
sl@0: #include "e_os.h"
sl@0: 
sl@0: static void value_free_hash(CONF_VALUE *a, LHASH *conf);
sl@0: static void value_free_stack(CONF_VALUE *a,LHASH *conf);
sl@0: static IMPLEMENT_LHASH_DOALL_ARG_FN(value_free_hash, CONF_VALUE *, LHASH *)
sl@0: static IMPLEMENT_LHASH_DOALL_ARG_FN(value_free_stack, CONF_VALUE *, LHASH *)
sl@0: /* We don't use function pointer casting or wrapper functions - but cast each
sl@0:  * callback parameter inside the callback functions. */
sl@0: /* static unsigned long hash(CONF_VALUE *v); */
sl@0: static unsigned long hash(const void *v_void);
sl@0: /* static int cmp_conf(CONF_VALUE *a,CONF_VALUE *b); */
sl@0: static int cmp_conf(const void *a_void,const void *b_void);
sl@0: 
sl@0: /* Up until OpenSSL 0.9.5a, this was get_section */
sl@0: EXPORT_C CONF_VALUE *_CONF_get_section(const CONF *conf, const char *section)
sl@0: 	{
sl@0: 	CONF_VALUE *v,vv;
sl@0: 
sl@0: 	if ((conf == NULL) || (section == NULL)) return(NULL);
sl@0: 	vv.name=NULL;
sl@0: 	vv.section=(char *)section;
sl@0: 	v=(CONF_VALUE *)lh_retrieve(conf->data,&vv);
sl@0: 	return(v);
sl@0: 	}
sl@0: 
sl@0: /* Up until OpenSSL 0.9.5a, this was CONF_get_section */
sl@0: EXPORT_C STACK_OF(CONF_VALUE) *_CONF_get_section_values(const CONF *conf,
sl@0: 					       const char *section)
sl@0: 	{
sl@0: 	CONF_VALUE *v;
sl@0: 
sl@0: 	v=_CONF_get_section(conf,section);
sl@0: 	if (v != NULL)
sl@0: 		return((STACK_OF(CONF_VALUE) *)v->value);
sl@0: 	else
sl@0: 		return(NULL);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int _CONF_add_string(CONF *conf, CONF_VALUE *section, CONF_VALUE *value)
sl@0: 	{
sl@0: 	CONF_VALUE *v = NULL;
sl@0: 	STACK_OF(CONF_VALUE) *ts;
sl@0: 
sl@0: 	ts = (STACK_OF(CONF_VALUE) *)section->value;
sl@0: 
sl@0: 	value->section=section->section;	
sl@0: 	if (!sk_CONF_VALUE_push(ts,value))
sl@0: 		{
sl@0: 		return 0;
sl@0: 		}
sl@0: 
sl@0: 	v = (CONF_VALUE *)lh_insert(conf->data, value);
sl@0: 	if (v != NULL)
sl@0: 		{
sl@0: 		(void)sk_CONF_VALUE_delete_ptr(ts,v);
sl@0: 		OPENSSL_free(v->name);
sl@0: 		OPENSSL_free(v->value);
sl@0: 		OPENSSL_free(v);
sl@0: 		}
sl@0: 	return 1;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C char *_CONF_get_string(const CONF *conf, const char *section, const char *name)
sl@0: 	{
sl@0: 	CONF_VALUE *v,vv;
sl@0: 	char *p;
sl@0: 
sl@0: 	if (name == NULL) return(NULL);
sl@0: 	if (conf != NULL)
sl@0: 		{
sl@0: 		if (section != NULL)
sl@0: 			{
sl@0: 			vv.name=(char *)name;
sl@0: 			vv.section=(char *)section;
sl@0: 			v=(CONF_VALUE *)lh_retrieve(conf->data,&vv);
sl@0: 			if (v != NULL) return(v->value);
sl@0: 			if (strcmp(section,"ENV") == 0)
sl@0: 				{
sl@0: 				p=Getenv(name);
sl@0: 				if (p != NULL) return(p);
sl@0: 				}
sl@0: 			}
sl@0: 		vv.section="default";
sl@0: 		vv.name=(char *)name;
sl@0: 		v=(CONF_VALUE *)lh_retrieve(conf->data,&vv);
sl@0: 		if (v != NULL)
sl@0: 			return(v->value);
sl@0: 		else
sl@0: 			return(NULL);
sl@0: 		}
sl@0: 	else
sl@0: 		return(Getenv(name));
sl@0: 	}
sl@0: 
sl@0: #if 0 /* There's no way to provide error checking with this function, so
sl@0: 	 force implementors of the higher levels to get a string and read
sl@0: 	 the number themselves. */
sl@0: EXPORT_C long _CONF_get_number(CONF *conf, char *section, char *name)
sl@0: 	{
sl@0: 	char *str;
sl@0: 	long ret=0;
sl@0: 
sl@0: 	str=_CONF_get_string(conf,section,name);
sl@0: 	if (str == NULL) return(0);
sl@0: 	for (;;)
sl@0: 		{
sl@0: 		if (conf->meth->is_number(conf, *str))
sl@0: 			ret=ret*10+conf->meth->to_int(conf, *str);
sl@0: 		else
sl@0: 			return(ret);
sl@0: 		str++;
sl@0: 		}
sl@0: 	}
sl@0: #endif
sl@0: 
sl@0: EXPORT_C int _CONF_new_data(CONF *conf)
sl@0: 	{
sl@0: 	if (conf == NULL)
sl@0: 		{
sl@0: 		return 0;
sl@0: 		}
sl@0: 	if (conf->data == NULL)
sl@0: 		if ((conf->data = lh_new(hash, cmp_conf)) == NULL)
sl@0: 			{
sl@0: 			return 0;
sl@0: 			}
sl@0: 	return 1;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void _CONF_free_data(CONF *conf)
sl@0: 	{
sl@0: 	if (conf == NULL || conf->data == NULL) return;
sl@0: 
sl@0: 	conf->data->down_load=0; /* evil thing to make sure the 'OPENSSL_free()'
sl@0: 				  * works as expected */
sl@0: 	lh_doall_arg(conf->data, LHASH_DOALL_ARG_FN(value_free_hash),
sl@0: 			conf->data);
sl@0: 
sl@0: 	/* We now have only 'section' entries in the hash table.
sl@0: 	 * Due to problems with */
sl@0: 
sl@0: 	lh_doall_arg(conf->data, LHASH_DOALL_ARG_FN(value_free_stack),
sl@0: 			conf->data);
sl@0: 	lh_free(conf->data);
sl@0: 	}
sl@0: 
sl@0: static void value_free_hash(CONF_VALUE *a, LHASH *conf)
sl@0: 	{
sl@0: 	if (a->name != NULL)
sl@0: 		{
sl@0: 		a=(CONF_VALUE *)lh_delete(conf,a);
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: static void value_free_stack(CONF_VALUE *a, LHASH *conf)
sl@0: 	{
sl@0: 	CONF_VALUE *vv;
sl@0: 	STACK *sk;
sl@0: 	int i;
sl@0: 
sl@0: 	if (a->name != NULL) return;
sl@0: 
sl@0: 	sk=(STACK *)a->value;
sl@0: 	for (i=sk_num(sk)-1; i>=0; i--)
sl@0: 		{
sl@0: 		vv=(CONF_VALUE *)sk_value(sk,i);
sl@0: 		OPENSSL_free(vv->value);
sl@0: 		OPENSSL_free(vv->name);
sl@0: 		OPENSSL_free(vv);
sl@0: 		}
sl@0: 	if (sk != NULL) sk_free(sk);
sl@0: 	OPENSSL_free(a->section);
sl@0: 	OPENSSL_free(a);
sl@0: 	}
sl@0: 
sl@0: /* static unsigned long hash(CONF_VALUE *v) */
sl@0: static unsigned long hash(const void *v_void)
sl@0: 	{
sl@0: 	CONF_VALUE *v = (CONF_VALUE *)v_void;
sl@0: 	return((lh_strhash(v->section)<<2)^lh_strhash(v->name));
sl@0: 	}
sl@0: 
sl@0: /* static int cmp_conf(CONF_VALUE *a, CONF_VALUE *b) */
sl@0: static int cmp_conf(const void *a_void,const  void *b_void)
sl@0: 	{
sl@0: 	int i;
sl@0: 	CONF_VALUE *a = (CONF_VALUE *)a_void;
sl@0: 	CONF_VALUE *b = (CONF_VALUE *)b_void;
sl@0: 
sl@0: 	if (a->section != b->section)
sl@0: 		{
sl@0: 		i=strcmp(a->section,b->section);
sl@0: 		if (i) return(i);
sl@0: 		}
sl@0: 
sl@0: 	if ((a->name != NULL) && (b->name != NULL))
sl@0: 		{
sl@0: 		i=strcmp(a->name,b->name);
sl@0: 		return(i);
sl@0: 		}
sl@0: 	else if (a->name == b->name)
sl@0: 		return(0);
sl@0: 	else
sl@0: 		return((a->name == NULL)?-1:1);
sl@0: 	}
sl@0: 
sl@0: /* Up until OpenSSL 0.9.5a, this was new_section */
sl@0: EXPORT_C CONF_VALUE *_CONF_new_section(CONF *conf, const char *section)
sl@0: 	{
sl@0: 	STACK *sk=NULL;
sl@0: 	int ok=0,i;
sl@0: 	CONF_VALUE *v=NULL,*vv;
sl@0: 
sl@0: 	if ((sk=sk_new_null()) == NULL)
sl@0: 		goto err;
sl@0: 	if ((v=(CONF_VALUE *)OPENSSL_malloc(sizeof(CONF_VALUE))) == NULL)
sl@0: 		goto err;
sl@0: 	i=strlen(section)+1;
sl@0: 	if ((v->section=(char *)OPENSSL_malloc(i)) == NULL)
sl@0: 		goto err;
sl@0: 
sl@0: 	memcpy(v->section,section,i);
sl@0: 	v->name=NULL;
sl@0: 	v->value=(char *)sk;
sl@0: 	
sl@0: 	vv=(CONF_VALUE *)lh_insert(conf->data,v);
sl@0: 	assert(vv == NULL);
sl@0: 	ok=1;
sl@0: err:
sl@0: 	if (!ok)
sl@0: 		{
sl@0: 		if (sk != NULL) sk_free(sk);
sl@0: 		if (v != NULL) OPENSSL_free(v);
sl@0: 		v=NULL;
sl@0: 		}
sl@0: 	return(v);
sl@0: 	}
sl@0: 
sl@0: IMPLEMENT_STACK_OF(CONF_VALUE)