1 files changed, 369 insertions, 0 deletions

diff --git a/crypto/objects/o_names.c b/crypto/objects/o_names.c
new file mode 100644
index 000000000000..adb5731f7659
--- /dev/null
+++ b/crypto/objects/o_names.c
@@ -0,0 +1,369 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <openssl/err.h>
+#include <openssl/lhash.h>
+#include <openssl/objects.h>
+#include <openssl/safestack.h>
+#include <openssl/e_os2.h>
+
+/* Later versions of DEC C has started to add lnkage information to certain
+ * functions, which makes it tricky to use them as values to regular function
+ * pointers.  One way is to define a macro that takes care of casting them
+ * correctly.
+ */
+#ifdef OPENSSL_SYS_VMS_DECC
+# define OPENSSL_strcmp (int (*)(const char *,const char *))strcmp
+#else
+# define OPENSSL_strcmp strcmp
+#endif
+
+/* 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;
+
+typedef struct name_funcs_st
+	{
+	unsigned long (*hash_func)(const char *name);
+	int (*cmp_func)(const char *a,const char *b);
+	void (*free_func)(const char *, int, const char *);
+	} NAME_FUNCS;
+
+DECLARE_STACK_OF(NAME_FUNCS)
+IMPLEMENT_STACK_OF(NAME_FUNCS)
+
+static STACK_OF(NAME_FUNCS) *name_funcs_stack;
+
+/* The LHASH callbacks now use the raw "void *" prototypes and do per-variable
+ * casting in the functions. This prevents function pointer casting without the
+ * need for macro-generated wrapper functions. */
+
+/* static unsigned long obj_name_hash(OBJ_NAME *a); */
+static unsigned long obj_name_hash(const void *a_void);
+/* static int obj_name_cmp(OBJ_NAME *a,OBJ_NAME *b); */
+static int obj_name_cmp(const void *a_void,const void *b_void);
+
+int OBJ_NAME_init(void)
+	{
+	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(unsigned long (*hash_func)(const char *),
+	int (*cmp_func)(const char *, const char *),
+	void (*free_func)(const char *, int, const char *))
+	{
+	int ret;
+	int i;
+	NAME_FUNCS *name_funcs;
+
+	if (name_funcs_stack == NULL)
+		{
+		MemCheck_off();
+		name_funcs_stack=sk_NAME_FUNCS_new_null();
+		MemCheck_on();
+		}
+	if ((name_funcs_stack == NULL))
+		{
+		/* ERROR */
+		return(0);
+		}
+	ret=names_type_num;
+	names_type_num++;
+	for (i=sk_NAME_FUNCS_num(name_funcs_stack); i<names_type_num; i++)
+		{
+		MemCheck_off();
+		name_funcs = OPENSSL_malloc(sizeof(NAME_FUNCS));
+		MemCheck_on();
+		if (!name_funcs)
+			{
+			OBJerr(OBJ_F_OBJ_NAME_NEW_INDEX,ERR_R_MALLOC_FAILURE);
+			return(0);
+			}
+		name_funcs->hash_func = lh_strhash;
+		name_funcs->cmp_func = OPENSSL_strcmp;
+		name_funcs->free_func = 0; /* NULL is often declared to
+						* ((void *)0), which according
+						* to Compaq C is not really
+						* compatible with a function
+						* pointer.	-- Richard Levitte*/
+		MemCheck_off();
+		sk_NAME_FUNCS_push(name_funcs_stack,name_funcs);
+		MemCheck_on();
+		}
+	name_funcs = sk_NAME_FUNCS_value(name_funcs_stack, ret);
+	if (hash_func != NULL)
+		name_funcs->hash_func = hash_func;
+	if (cmp_func != NULL)
+		name_funcs->cmp_func = cmp_func;
+	if (free_func != NULL)
+		name_funcs->free_func = free_func;
+	return(ret);
+	}
+
+/* static int obj_name_cmp(OBJ_NAME *a, OBJ_NAME *b) */
+static int obj_name_cmp(const void *a_void, const void *b_void)
+	{
+	int ret;
+	const OBJ_NAME *a = (const OBJ_NAME *)a_void;
+	const OBJ_NAME *b = (const OBJ_NAME *)b_void;
+
+	ret=a->type-b->type;
+	if (ret == 0)
+		{
+		if ((name_funcs_stack != NULL)
+			&& (sk_NAME_FUNCS_num(name_funcs_stack) > a->type))
+			{
+			ret=sk_NAME_FUNCS_value(name_funcs_stack,
+				a->type)->cmp_func(a->name,b->name);
+			}
+		else
+			ret=strcmp(a->name,b->name);
+		}
+	return(ret);
+	}
+
+/* static unsigned long obj_name_hash(OBJ_NAME *a) */
+static unsigned long obj_name_hash(const void *a_void)
+	{
+	unsigned long ret;
+	const OBJ_NAME *a = (const OBJ_NAME *)a_void;
+
+	if ((name_funcs_stack != NULL) && (sk_NAME_FUNCS_num(name_funcs_stack) > a->type))
+		{
+		ret=sk_NAME_FUNCS_value(name_funcs_stack,
+			a->type)->hash_func(a->name);
+		}
+	else
+		{
+		ret=lh_strhash(a->name);
+		}
+	ret^=a->type;
+	return(ret);
+	}
+
+const char *OBJ_NAME_get(const 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,&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(const char *name, int type, const char *data)
+	{
+	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 *)OPENSSL_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,onp);
+	if (ret != NULL)
+		{
+		/* free things */
+		if ((name_funcs_stack != NULL) && (sk_NAME_FUNCS_num(name_funcs_stack) > ret->type))
+			{
+			/* XXX: I'm not sure I understand why the free
+			 * function should get three arguments...
+			 * -- Richard Levitte
+			 */
+			sk_NAME_FUNCS_value(name_funcs_stack,
+				ret->type)->free_func(ret->name,ret->type,ret->data);
+			}
+		OPENSSL_free(ret);
+		}
+	else
+		{
+		if (lh_error(names_lh))
+			{
+			/* ERROR */
+			return(0);
+			}
+		}
+	return(1);
+	}
+
+int OBJ_NAME_remove(const char *name, int type)
+	{
+	OBJ_NAME on,*ret;
+
+	if (names_lh == NULL) return(0);
+
+	type&= ~OBJ_NAME_ALIAS;
+	on.name=name;
+	on.type=type;
+	ret=(OBJ_NAME *)lh_delete(names_lh,&on);
+	if (ret != NULL)
+		{
+		/* free things */
+		if ((name_funcs_stack != NULL) && (sk_NAME_FUNCS_num(name_funcs_stack) > ret->type))
+			{
+			/* XXX: I'm not sure I understand why the free
+			 * function should get three arguments...
+			 * -- Richard Levitte
+			 */
+			sk_NAME_FUNCS_value(name_funcs_stack,
+				ret->type)->free_func(ret->name,ret->type,ret->data);
+			}
+		OPENSSL_free(ret);
+		return(1);
+		}
+	else
+		return(0);
+	}
+
+struct doall
+	{
+	int type;
+	void (*fn)(const OBJ_NAME *,void *arg);
+	void *arg;
+	};
+
+static void do_all_fn(const OBJ_NAME *name,struct doall *d)
+	{
+	if(name->type == d->type)
+		d->fn(name,d->arg);
+	}
+
+static IMPLEMENT_LHASH_DOALL_ARG_FN(do_all_fn, const OBJ_NAME *, struct doall *)
+
+void OBJ_NAME_do_all(int type,void (*fn)(const OBJ_NAME *,void *arg),void *arg)
+	{
+	struct doall d;
+
+	d.type=type;
+	d.fn=fn;
+	d.arg=arg;
+
+	lh_doall_arg(names_lh,LHASH_DOALL_ARG_FN(do_all_fn),&d);
+	}
+
+struct doall_sorted
+	{
+	int type;
+	int n;
+	const OBJ_NAME **names;
+	};
+
+static void do_all_sorted_fn(const OBJ_NAME *name,void *d_)
+	{
+	struct doall_sorted *d=d_;
+
+	if(name->type != d->type)
+		return;
+
+	d->names[d->n++]=name;
+	}
+
+static int do_all_sorted_cmp(const void *n1_,const void *n2_)
+	{
+	const OBJ_NAME * const *n1=n1_;
+	const OBJ_NAME * const *n2=n2_;
+
+	return strcmp((*n1)->name,(*n2)->name);
+	}
+
+void OBJ_NAME_do_all_sorted(int type,void (*fn)(const OBJ_NAME *,void *arg),
+				void *arg)
+	{
+	struct doall_sorted d;
+	int n;
+
+	d.type=type;
+	d.names=OPENSSL_malloc(lh_num_items(names_lh)*sizeof *d.names);
+	d.n=0;
+	OBJ_NAME_do_all(type,do_all_sorted_fn,&d);
+
+	qsort((void *)d.names,d.n,sizeof *d.names,do_all_sorted_cmp);
+
+	for(n=0 ; n < d.n ; ++n)
+		fn(d.names[n],arg);
+
+	OPENSSL_free((void *)d.names);
+	}
+
+static int free_type;
+
+static void names_lh_free(OBJ_NAME *onp)
+{
+	if(onp == NULL)
+		return;
+
+	if ((free_type < 0) || (free_type == onp->type))
+		{
+		OBJ_NAME_remove(onp->name,onp->type);
+		}
+	}
+
+static IMPLEMENT_LHASH_DOALL_FN(names_lh_free, OBJ_NAME *)
+
+static void name_funcs_free(NAME_FUNCS *ptr)
+	{
+	OPENSSL_free(ptr);
+	}
+
+void OBJ_NAME_cleanup(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,LHASH_DOALL_FN(names_lh_free));
+	if (type < 0)
+		{
+		lh_free(names_lh);
+		sk_NAME_FUNCS_pop_free(name_funcs_stack,name_funcs_free);
+		names_lh=NULL;
+		name_funcs_stack = NULL;
+		}
+	else
+		names_lh->down_load=down_load;
+	}
+