sl@0: /*
sl@0: Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
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 are met:
sl@0: 
sl@0: * Redistributions of source code must retain the above copyright notice, this 
sl@0:   list of conditions and the following disclaimer.
sl@0: * Redistributions in binary form must reproduce the above copyright notice, 
sl@0:   this list of conditions and the following disclaimer in the documentation 
sl@0:   and/or other materials provided with the distribution.
sl@0: * Neither the name of Nokia Corporation nor the names of its contributors 
sl@0:   may be used to endorse or promote products derived from this software 
sl@0:   without specific prior written permission.
sl@0: 
sl@0: THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
sl@0: AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
sl@0: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
sl@0: DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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 OR 
sl@0: SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
sl@0: CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 
sl@0: OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
sl@0: OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
sl@0: 
sl@0: Description:
sl@0: */
sl@0: 
sl@0: #include <stdio.h>
sl@0: #include <stdlib.h>
sl@0: #include <string.h>
sl@0: 
sl@0: #include <openssl/err.h>
sl@0: #include <openssl/lhash.h>
sl@0: #include <openssl/objects.h>
sl@0: #include <openssl/safestack.h>
sl@0: #include <openssl/e_os2.h>
sl@0: #if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__)))
sl@0: #include "libcrypto_wsd_macros.h"
sl@0: #include "libcrypto_wsd.h"
sl@0: #endif
sl@0: 
sl@0: 
sl@0: /* Later versions of DEC C has started to add lnkage information to certain
sl@0:  * functions, which makes it tricky to use them as values to regular function
sl@0:  * pointers.  One way is to define a macro that takes care of casting them
sl@0:  * correctly.
sl@0:  */
sl@0: #ifdef OPENSSL_SYS_VMS_DECC
sl@0: # define OPENSSL_strcmp (int (*)(const char *,const char *))strcmp
sl@0: #else
sl@0: # define OPENSSL_strcmp strcmp
sl@0: #endif
sl@0: 
sl@0: /* I use the ex_data stuff to manage the identifiers for the obj_name_types
sl@0:  * that applications may define.  I only really use the free function field.
sl@0:  */
sl@0: #ifndef EMULATOR 
sl@0: static LHASH *names_lh=NULL;
sl@0: static int names_type_num=OBJ_NAME_TYPE_NUM;
sl@0: #else
sl@0: GET_STATIC_VAR_FROM_TLS(names_lh,o_names,LHASH *)
sl@0: #define names_lh (*GET_WSD_VAR_NAME(names_lh,o_names, s)())
sl@0: 
sl@0: GET_STATIC_VAR_FROM_TLS(names_type_num,o_names,int)
sl@0: #define names_type_num (*GET_WSD_VAR_NAME(names_type_num,o_names, s)())
sl@0: 
sl@0: #endif
sl@0: 
sl@0: typedef struct name_funcs_st
sl@0: 	{
sl@0: 	unsigned long (*hash_func)(const char *name);
sl@0: 	int (*cmp_func)(const char *a,const char *b);
sl@0: 	void (*free_func)(const char *, int, const char *);
sl@0: 	} NAME_FUNCS;
sl@0: 
sl@0: DECLARE_STACK_OF(NAME_FUNCS)
sl@0: IMPLEMENT_STACK_OF(NAME_FUNCS)
sl@0: 
sl@0: #ifndef EMULATOR
sl@0: static STACK_OF(NAME_FUNCS) *name_funcs_stack;
sl@0: #else
sl@0: GET_STATIC_VAR_FROM_TLS(name_funcs_stack,o_names,STACK_OF(NAME_FUNCS)*)
sl@0: #define name_funcs_stack (*GET_WSD_VAR_NAME(name_funcs_stack,o_names, s)())
sl@0: #endif
sl@0: 
sl@0: /* The LHASH callbacks now use the raw "void *" prototypes and do per-variable
sl@0:  * casting in the functions. This prevents function pointer casting without the
sl@0:  * need for macro-generated wrapper functions. */
sl@0: 
sl@0: /* static unsigned long obj_name_hash(OBJ_NAME *a); */
sl@0: static unsigned long obj_name_hash(const void *a_void);
sl@0: /* static int obj_name_cmp(OBJ_NAME *a,OBJ_NAME *b); */
sl@0: static int obj_name_cmp(const void *a_void,const void *b_void);
sl@0: 
sl@0: EXPORT_C int OBJ_NAME_init(void)
sl@0: 	{
sl@0: 	if (names_lh != NULL) return(1);
sl@0: 	MemCheck_off();
sl@0: 	names_lh=lh_new(obj_name_hash, obj_name_cmp);
sl@0: 	MemCheck_on();
sl@0: 	return(names_lh != NULL);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int OBJ_NAME_new_index(unsigned long (*hash_func)(const char *),
sl@0: 	int (*cmp_func)(const char *, const char *),
sl@0: 	void (*free_func)(const char *, int, const char *))
sl@0: 	{
sl@0: 	int ret;
sl@0: 	int i;
sl@0: 	NAME_FUNCS *name_funcs;
sl@0: 
sl@0: 	if (name_funcs_stack == NULL)
sl@0: 		{
sl@0: 		MemCheck_off();
sl@0: 		name_funcs_stack=sk_NAME_FUNCS_new_null();
sl@0: 		MemCheck_on();
sl@0: 		}
sl@0: 	if ((name_funcs_stack == NULL))
sl@0: 		{
sl@0: 		/* ERROR */
sl@0: 		return(0);
sl@0: 		}
sl@0: 	ret=names_type_num;
sl@0: 	names_type_num++;
sl@0: 	for (i=sk_NAME_FUNCS_num(name_funcs_stack); i<names_type_num; i++)
sl@0: 		{
sl@0: 		MemCheck_off();
sl@0: 		name_funcs = OPENSSL_malloc(sizeof(NAME_FUNCS));
sl@0: 		MemCheck_on();
sl@0: 		if (!name_funcs)
sl@0: 			{
sl@0: 			OBJerr(OBJ_F_OBJ_NAME_NEW_INDEX,ERR_R_MALLOC_FAILURE);
sl@0: 			return(0);
sl@0: 			}
sl@0: 		name_funcs->hash_func = lh_strhash;
sl@0: 		name_funcs->cmp_func = OPENSSL_strcmp;
sl@0: 		name_funcs->free_func = 0; /* NULL is often declared to
sl@0: 						* ((void *)0), which according
sl@0: 						* to Compaq C is not really
sl@0: 						* compatible with a function
sl@0: 						* pointer.	-- Richard Levitte*/
sl@0: 		MemCheck_off();
sl@0: 		sk_NAME_FUNCS_push(name_funcs_stack,name_funcs);
sl@0: 		MemCheck_on();
sl@0: 		}
sl@0: 	name_funcs = sk_NAME_FUNCS_value(name_funcs_stack, ret);
sl@0: 	if (hash_func != NULL)
sl@0: 		name_funcs->hash_func = hash_func;
sl@0: 	if (cmp_func != NULL)
sl@0: 		name_funcs->cmp_func = cmp_func;
sl@0: 	if (free_func != NULL)
sl@0: 		name_funcs->free_func = free_func;
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: /* static int obj_name_cmp(OBJ_NAME *a, OBJ_NAME *b) */
sl@0: static int obj_name_cmp(const void *a_void, const void *b_void)
sl@0: 	{
sl@0: 	int ret;
sl@0: 	const OBJ_NAME *a = (const OBJ_NAME *)a_void;
sl@0: 	const OBJ_NAME *b = (const OBJ_NAME *)b_void;
sl@0: 
sl@0: 	ret=a->type-b->type;
sl@0: 	if (ret == 0)
sl@0: 		{
sl@0: 		if ((name_funcs_stack != NULL)
sl@0: 			&& (sk_NAME_FUNCS_num(name_funcs_stack) > a->type))
sl@0: 			{
sl@0: 			ret=sk_NAME_FUNCS_value(name_funcs_stack,
sl@0: 				a->type)->cmp_func(a->name,b->name);
sl@0: 			}
sl@0: 		else
sl@0: 			ret=strcmp(a->name,b->name);
sl@0: 		}
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: /* static unsigned long obj_name_hash(OBJ_NAME *a) */
sl@0: static unsigned long obj_name_hash(const void *a_void)
sl@0: 	{
sl@0: 	unsigned long ret;
sl@0: 	const OBJ_NAME *a = (const OBJ_NAME *)a_void;
sl@0: 
sl@0: 	if ((name_funcs_stack != NULL) && (sk_NAME_FUNCS_num(name_funcs_stack) > a->type))
sl@0: 		{
sl@0: 		ret=sk_NAME_FUNCS_value(name_funcs_stack,
sl@0: 			a->type)->hash_func(a->name);
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		ret=lh_strhash(a->name);
sl@0: 		}
sl@0: 	ret^=a->type;
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C const char *OBJ_NAME_get(const char *name, int type)
sl@0: 	{
sl@0: 	OBJ_NAME on,*ret;
sl@0: 	int num=0,alias;
sl@0: 
sl@0: 	if (name == NULL) return(NULL);
sl@0: 	if ((names_lh == NULL) && !OBJ_NAME_init()) return(NULL);
sl@0: 
sl@0: 	alias=type&OBJ_NAME_ALIAS;
sl@0: 	type&= ~OBJ_NAME_ALIAS;
sl@0: 
sl@0: 	on.name=name;
sl@0: 	on.type=type;
sl@0: 
sl@0: 	for (;;)
sl@0: 	{
sl@0: 		ret=(OBJ_NAME *)lh_retrieve(names_lh,&on);
sl@0: 		if (ret == NULL) return(NULL);
sl@0: 		if ((ret->alias) && !alias)
sl@0: 			{
sl@0: 			if (++num > 10) return(NULL);
sl@0: 			on.name=ret->data;
sl@0: 			}
sl@0: 		else
sl@0: 			{
sl@0: 			return(ret->data);
sl@0: 			}
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int OBJ_NAME_add(const char *name, int type, const char *data)
sl@0: 	{
sl@0: 	OBJ_NAME *onp,*ret;
sl@0: 	int alias;
sl@0: 
sl@0: 	if ((names_lh == NULL) && !OBJ_NAME_init()) return(0);
sl@0: 
sl@0: 	alias=type&OBJ_NAME_ALIAS;
sl@0: 	type&= ~OBJ_NAME_ALIAS;
sl@0: 
sl@0: 	onp=(OBJ_NAME *)OPENSSL_malloc(sizeof(OBJ_NAME));
sl@0: 	if (onp == NULL)
sl@0: 		{
sl@0: 		/* ERROR */
sl@0: 		return(0);
sl@0: 		}
sl@0: 
sl@0: 	onp->name=name;
sl@0: 	onp->alias=alias;
sl@0: 	onp->type=type;
sl@0: 	onp->data=data;
sl@0: 
sl@0: 	ret=(OBJ_NAME *)lh_insert(names_lh,onp);
sl@0: 	if (ret != NULL)
sl@0: 		{
sl@0: 		/* free things */
sl@0: 		if ((name_funcs_stack != NULL) && (sk_NAME_FUNCS_num(name_funcs_stack) > ret->type))
sl@0: 			{
sl@0: 			/* XXX: I'm not sure I understand why the free
sl@0: 			 * function should get three arguments...
sl@0: 			 * -- Richard Levitte
sl@0: 			 */
sl@0: 			sk_NAME_FUNCS_value(name_funcs_stack,
sl@0: 				ret->type)->free_func(ret->name,ret->type,ret->data);
sl@0: 			}
sl@0: 		OPENSSL_free(ret);
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		if (lh_error(names_lh))
sl@0: 			{
sl@0: 			/* ERROR */
sl@0: 			return(0);
sl@0: 			}
sl@0: 		}
sl@0: 	return(1);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int OBJ_NAME_remove(const char *name, int type)
sl@0: 	{
sl@0: 	OBJ_NAME on,*ret;
sl@0: 
sl@0: 	if (names_lh == NULL) return(0);
sl@0: 
sl@0: 	type&= ~OBJ_NAME_ALIAS;
sl@0: 	on.name=name;
sl@0: 	on.type=type;
sl@0: 	ret=(OBJ_NAME *)lh_delete(names_lh,&on);
sl@0: 	if (ret != NULL)
sl@0: 		{
sl@0: 		/* free things */
sl@0: 		if ((name_funcs_stack != NULL) && (sk_NAME_FUNCS_num(name_funcs_stack) > ret->type))
sl@0: 			{
sl@0: 			/* XXX: I'm not sure I understand why the free
sl@0: 			 * function should get three arguments...
sl@0: 			 * -- Richard Levitte
sl@0: 			 */
sl@0: 			sk_NAME_FUNCS_value(name_funcs_stack,
sl@0: 				ret->type)->free_func(ret->name,ret->type,ret->data);
sl@0: 			}
sl@0: 		OPENSSL_free(ret);
sl@0: 		return(1);
sl@0: 		}
sl@0: 	else
sl@0: 		return(0);
sl@0: 	}
sl@0: 
sl@0: struct doall
sl@0: 	{
sl@0: 	int type;
sl@0: 	void (*fn)(const OBJ_NAME *,void *arg);
sl@0: 	void *arg;
sl@0: 	};
sl@0: 
sl@0: static void do_all_fn(const OBJ_NAME *name,struct doall *d)
sl@0: 	{
sl@0: 	if(name->type == d->type)
sl@0: 		d->fn(name,d->arg);
sl@0: 	}
sl@0: 
sl@0: static IMPLEMENT_LHASH_DOALL_ARG_FN(do_all_fn, const OBJ_NAME *, struct doall *)
sl@0: 
sl@0: EXPORT_C void OBJ_NAME_do_all(int type,void (*fn)(const OBJ_NAME *,void *arg),void *arg)
sl@0: 	{
sl@0: 	struct doall d;
sl@0: 
sl@0: 	d.type=type;
sl@0: 	d.fn=fn;
sl@0: 	d.arg=arg;
sl@0: 
sl@0: 	lh_doall_arg(names_lh,LHASH_DOALL_ARG_FN(do_all_fn),&d);
sl@0: 	}
sl@0: 
sl@0: struct doall_sorted
sl@0: 	{
sl@0: 	int type;
sl@0: 	int n;
sl@0: 	const OBJ_NAME **names;
sl@0: 	};
sl@0: 
sl@0: static void do_all_sorted_fn(const OBJ_NAME *name,void *d_)
sl@0: 	{
sl@0: 	struct doall_sorted *d=d_;
sl@0: 
sl@0: 	if(name->type != d->type)
sl@0: 		return;
sl@0: 
sl@0: 	d->names[d->n++]=name;
sl@0: 	}
sl@0: 
sl@0: static int do_all_sorted_cmp(const void *n1_,const void *n2_)
sl@0: 	{
sl@0: 	const OBJ_NAME * const *n1=n1_;
sl@0: 	const OBJ_NAME * const *n2=n2_;
sl@0: 
sl@0: 	return strcmp((*n1)->name,(*n2)->name);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void OBJ_NAME_do_all_sorted(int type,void (*fn)(const OBJ_NAME *,void *arg),
sl@0: 				void *arg)
sl@0: 	{
sl@0: 	struct doall_sorted d;
sl@0: 	int n;
sl@0: 
sl@0: 	d.type=type;
sl@0: 	d.names=OPENSSL_malloc(lh_num_items(names_lh)*sizeof *d.names);
sl@0: #ifdef SYMBIAN	
sl@0: 	if(d.names==NULL)
sl@0: 	{
sl@0: 		return;
sl@0:   }	
sl@0: #endif  
sl@0: 	d.n=0;
sl@0: 	OBJ_NAME_do_all(type,do_all_sorted_fn,&d);
sl@0: 
sl@0: 	qsort((void *)d.names,d.n,sizeof *d.names,do_all_sorted_cmp);
sl@0: 
sl@0: 	for(n=0 ; n < d.n ; ++n)
sl@0: 		fn(d.names[n],arg);
sl@0: 
sl@0: 	OPENSSL_free((void *)d.names);
sl@0: 	}
sl@0: 
sl@0: #ifndef EMULATOR
sl@0: static int free_type;
sl@0: #else
sl@0: GET_STATIC_VAR_FROM_TLS(free_type,o_names,int)
sl@0: #define free_type (*GET_WSD_VAR_NAME(free_type,o_names, s)())
sl@0: #endif
sl@0: 
sl@0: static void names_lh_free(OBJ_NAME *onp)
sl@0: {
sl@0: 	if(onp == NULL)
sl@0: 		return;
sl@0: 
sl@0: 	if ((free_type < 0) || (free_type == onp->type))
sl@0: 		{
sl@0: 		OBJ_NAME_remove(onp->name,onp->type);
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: static IMPLEMENT_LHASH_DOALL_FN(names_lh_free, OBJ_NAME *)
sl@0: 
sl@0: static void name_funcs_free(NAME_FUNCS *ptr)
sl@0: 	{
sl@0: 	OPENSSL_free(ptr);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void OBJ_NAME_cleanup(int type)
sl@0: 	{
sl@0: 	unsigned long down_load;
sl@0: 
sl@0: 	if (names_lh == NULL) return;
sl@0: 
sl@0: 	free_type=type;
sl@0: 	down_load=names_lh->down_load;
sl@0: 	names_lh->down_load=0;
sl@0: 
sl@0: 	lh_doall(names_lh,LHASH_DOALL_FN(names_lh_free));
sl@0: 	if (type < 0)
sl@0: 		{
sl@0: 		lh_free(names_lh);
sl@0: 		sk_NAME_FUNCS_pop_free(name_funcs_stack,name_funcs_free);
sl@0: 		names_lh=NULL;
sl@0: 		name_funcs_stack = NULL;
sl@0: 		}
sl@0: 	else
sl@0: 		names_lh->down_load=down_load;
sl@0: 	}
sl@0: