crypto/conf/conf_api.c - third_party/openssl - Git at Google

 /* 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(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=(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(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 = (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(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=(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=(char *)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, const 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)
	/* 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(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=(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(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 = (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(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=(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=(char *)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=ret10+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, const 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)