Import of old SSLeay release: SSLeay 0.9.1b (unreleased)SSLeay

1 files changed, 254 insertions, 0 deletions

diff --git a/crypto/objects/o_names.c b/crypto/objects/o_names.c
new file mode 100644
index 0000000..8995869
--- /dev/null
+++ b/crypto/objects/o_names.c
@@ -0,0 +1,254 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "lhash.h"
+#include "objects.h"
+
+/* I use the ex_data stuff to manage the identifiers for the obj_name_types
+ * that applications may define.  I only really use the free function field.
+ */
+static LHASH *names_lh=NULL;
+static int names_type_num=OBJ_NAME_TYPE_NUM;
+static STACK *names_cmp=NULL;
+static STACK *names_hash=NULL;
+static STACK *names_free=NULL;
+
+static unsigned long obj_name_hash(OBJ_NAME *a);
+static int obj_name_cmp(OBJ_NAME *a,OBJ_NAME *b);
+
+int OBJ_NAME_init()
+	{
+	if (names_lh != NULL) return(1);
+	MemCheck_off();
+	names_lh=lh_new(obj_name_hash,obj_name_cmp);
+	MemCheck_on();
+	return(names_lh != NULL);
+	}
+
+int OBJ_NAME_new_index(hash_func,cmp_func,free_func)
+unsigned long (*hash_func)();
+int (*cmp_func)();
+void (*free_func)();
+	{
+	int ret;
+	int i;
+
+	if (names_free == NULL)
+		{
+		MemCheck_off();
+		names_hash=sk_new_null();
+		names_cmp=sk_new_null();
+		names_free=sk_new_null();
+		MemCheck_on();
+		}
+	if ((names_free == NULL) || (names_hash == NULL) || (names_cmp == NULL))
+		{
+		/* ERROR */
+		return(0);
+		}
+	ret=names_type_num;
+	names_type_num++;
+	for (i=sk_num(names_free); i<names_type_num; i++)
+		{
+		MemCheck_off();
+		sk_push(names_hash,(char *)strcmp);
+		sk_push(names_cmp,(char *)lh_strhash);
+		sk_push(names_free,NULL);
+		MemCheck_on();
+		}
+	if (hash_func != NULL)
+		sk_value(names_hash,ret)=(char *)hash_func;
+	if (cmp_func != NULL)
+		sk_value(names_cmp,ret)= (char *)cmp_func;
+	if (free_func != NULL)
+		sk_value(names_free,ret)=(char *)free_func;
+	return(ret);
+	}
+
+static int obj_name_cmp(a,b)
+OBJ_NAME *a;
+OBJ_NAME *b;
+	{
+	int ret;
+	int (*cmp)();
+
+	ret=a->type-b->type;
+	if (ret == 0)
+		{
+		if ((names_cmp != NULL) && (sk_num(names_cmp) > a->type))
+			{
+			cmp=(int (*)())sk_value(names_cmp,a->type);
+			ret=cmp(a->name,b->name);
+			}
+		else
+			ret=strcmp(a->name,b->name);
+		}
+	return(ret);
+	}
+
+static unsigned long obj_name_hash(a)
+OBJ_NAME *a;
+	{
+	unsigned long ret;
+	unsigned long (*hash)();
+
+	if ((names_hash != NULL) && (sk_num(names_hash) > a->type))
+		{
+		hash=(unsigned long (*)())sk_value(names_hash,a->type);
+		ret=hash(a->name);
+		}
+	else
+		{
+		ret=lh_strhash(a->name);
+		}
+	ret^=a->type;
+	return(ret);
+	}
+
+char *OBJ_NAME_get(name,type)
+char *name;
+int type;
+	{
+	OBJ_NAME on,*ret;
+	int num=0,alias;
+
+	if (name == NULL) return(NULL);
+	if ((names_lh == NULL) && !OBJ_NAME_init()) return(NULL);
+
+	alias=type&OBJ_NAME_ALIAS;
+	type&= ~OBJ_NAME_ALIAS;
+
+	on.name=name;
+	on.type=type;
+
+	for (;;)
+		{
+		ret=(OBJ_NAME *)lh_retrieve(names_lh,(char *)&on);
+		if (ret == NULL) return(NULL);
+		if ((ret->alias) && !alias)
+			{
+			if (++num > 10) return(NULL);
+			on.name=ret->data;
+			}
+		else
+			{
+			return(ret->data);
+			}
+		}
+	}
+
+int OBJ_NAME_add(name,type,data)
+char *name;
+int type;
+char *data;
+	{
+	void (*f)();
+	OBJ_NAME *onp,*ret;
+	int alias;
+
+	if ((names_lh == NULL) && !OBJ_NAME_init()) return(0);
+
+	alias=type&OBJ_NAME_ALIAS;
+	type&= ~OBJ_NAME_ALIAS;
+
+	onp=(OBJ_NAME *)Malloc(sizeof(OBJ_NAME));
+	if (onp == NULL)
+		{
+		/* ERROR */
+		return(0);
+		}
+
+	onp->name=name;
+	onp->alias=alias;
+	onp->type=type;
+	onp->data=data;
+
+	ret=(OBJ_NAME *)lh_insert(names_lh,(char *)onp);
+	if (ret != NULL)
+		{
+		/* free things */
+		if ((names_free != NULL) && (sk_num(names_free) > ret->type))
+			{
+			f=(void (*)())sk_value(names_free,ret->type);
+			f(ret->name,ret->type,ret->data);
+			}
+		Free((char *)ret);
+		}
+	else
+		{
+		if (lh_error(names_lh))
+			{
+			/* ERROR */
+			return(0);
+			}
+		}
+	return(1);
+	}
+
+int OBJ_NAME_remove(name,type)
+char *name;
+int type;
+	{
+	OBJ_NAME on,*ret;
+	void (*f)();
+
+	if (names_lh == NULL) return(0);
+
+	type&= ~OBJ_NAME_ALIAS;
+	on.name=name;
+	on.type=type;
+	ret=(OBJ_NAME *)lh_delete(names_lh,(char *)&on);
+	if (ret != NULL)
+		{
+		/* free things */
+		if ((names_free != NULL) && (sk_num(names_free) > type))
+			{
+			f=(void (*)())sk_value(names_free,type);
+			f(ret->name,ret->type,ret->data);
+			}
+		Free((char *)ret);
+		return(1);
+		}
+	else
+		return(0);
+	}
+
+static int free_type;
+
+static void names_lh_free(onp,type)
+OBJ_NAME *onp;
+	{
+	if ((free_type < 0) || (free_type == onp->type))
+		{
+		OBJ_NAME_remove(onp->name,onp->type);
+		}
+	}
+
+void OBJ_NAME_cleanup(type)
+int type;
+	{
+	unsigned long down_load;
+
+	if (names_lh == NULL) return;
+
+	free_type=type;
+	down_load=names_lh->down_load;
+	names_lh->down_load=0;
+
+	lh_doall(names_lh,names_lh_free);
+	if (type < 0)
+		{
+		lh_free(names_lh);
+		sk_free(names_hash);
+		sk_free(names_cmp);
+		sk_free(names_free);
+		names_lh=NULL;
+		names_hash=NULL;
+		names_cmp=NULL;
+		names_free=NULL;
+		}
+	else
+		names_lh->down_load=down_load;
+	}
+