Initial import

1 files changed, 365 insertions, 0 deletions

diff --git a/openssl/crypto/store/str_mem.c b/openssl/crypto/store/str_mem.c
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+++ b/openssl/crypto/store/str_mem.c
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+/* crypto/store/str_mem.c -*- mode:C; c-file-style: "eay" -*- */
+/* Written by Richard Levitte (richard@levitte.org) for the OpenSSL
+ * project 2003.
+ */
+/* ====================================================================
+ * Copyright (c) 2003 The OpenSSL Project.  All rights reserved.
+ *
+ * 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 above 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 acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED 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 OpenSSL PROJECT OR
+ * ITS 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.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <string.h>
+#include <openssl/err.h>
+#include "str_locl.h"
+
+/* The memory store is currently highly experimental.  It's meant to become
+   a base store used by other stores for internal caching (for full caching
+   support, aging needs to be added).
+
+   The database use is meant to support as much attribute association as
+   possible, while providing for as small search ranges as possible.
+   This is currently provided for by sorting the entries by numbers that
+   are composed of bits set at the positions indicated by attribute type
+   codes.  This provides for ranges determined by the highest attribute
+   type code value.  A better idea might be to sort by values computed
+   from the range of attributes associated with the object (basically,
+   the difference between the highest and lowest attribute type code)
+   and it's distance from a base (basically, the lowest associated
+   attribute type code).
+*/
+
+typedef struct mem_object_data_st
+	{
+	STORE_OBJECT *object;
+	STORE_ATTR_INFO *attr_info;
+	int references;
+	} MEM_OBJECT_DATA;
+
+DECLARE_STACK_OF(MEM_OBJECT_DATA)
+struct mem_data_st
+	{
+	STACK_OF(MEM_OBJECT_DATA) *data; /* sorted with
+					  * STORE_ATTR_INFO_compare(). */
+	unsigned int compute_components : 1; /* Currently unused, but can
+						be used to add attributes
+						from parts of the data. */
+	};
+
+DECLARE_STACK_OF(STORE_ATTR_INFO)
+struct mem_ctx_st
+	{
+	int type;		/* The type we're searching for */
+	STACK_OF(STORE_ATTR_INFO) *search_attributes; /* Sets of
+				     attributes to search for.  Each
+				     element is a STORE_ATTR_INFO. */
+	int search_index;	/* which of the search attributes we
+				   found a match for, -1 when we still
+				   haven't found any */
+	int index;		/* -1 as long as we're searching for
+                                    the first */
+	};
+
+static int mem_init(STORE *s);
+static void mem_clean(STORE *s);
+static STORE_OBJECT *mem_generate(STORE *s, STORE_OBJECT_TYPES type,
+	OPENSSL_ITEM attributes[], OPENSSL_ITEM parameters[]);
+static STORE_OBJECT *mem_get(STORE *s, STORE_OBJECT_TYPES type,
+	OPENSSL_ITEM attributes[], OPENSSL_ITEM parameters[]);
+static int mem_store(STORE *s, STORE_OBJECT_TYPES type,
+	STORE_OBJECT *data, OPENSSL_ITEM attributes[],
+	OPENSSL_ITEM parameters[]);
+static int mem_modify(STORE *s, STORE_OBJECT_TYPES type,
+	OPENSSL_ITEM search_attributes[], OPENSSL_ITEM add_attributes[],
+	OPENSSL_ITEM modify_attributes[], OPENSSL_ITEM delete_attributes[],
+	OPENSSL_ITEM parameters[]);
+static int mem_delete(STORE *s, STORE_OBJECT_TYPES type,
+	OPENSSL_ITEM attributes[], OPENSSL_ITEM parameters[]);
+static void *mem_list_start(STORE *s, STORE_OBJECT_TYPES type,
+	OPENSSL_ITEM attributes[], OPENSSL_ITEM parameters[]);
+static STORE_OBJECT *mem_list_next(STORE *s, void *handle);
+static int mem_list_end(STORE *s, void *handle);
+static int mem_list_endp(STORE *s, void *handle);
+static int mem_lock(STORE *s, OPENSSL_ITEM attributes[],
+	OPENSSL_ITEM parameters[]);
+static int mem_unlock(STORE *s, OPENSSL_ITEM attributes[],
+	OPENSSL_ITEM parameters[]);
+static int mem_ctrl(STORE *s, int cmd, long l, void *p, void (*f)(void));
+
+static STORE_METHOD store_memory =
+	{
+	"OpenSSL memory store interface",
+	mem_init,
+	mem_clean,
+	mem_generate,
+	mem_get,
+	mem_store,
+	mem_modify,
+	NULL, /* revoke */
+	mem_delete,
+	mem_list_start,
+	mem_list_next,
+	mem_list_end,
+	mem_list_endp,
+	NULL, /* update */
+	mem_lock,
+	mem_unlock,
+	mem_ctrl
+	};
+
+const STORE_METHOD *STORE_Memory(void)
+	{
+	return &store_memory;
+	}
+
+static int mem_init(STORE *s)
+	{
+	return 1;
+	}
+
+static void mem_clean(STORE *s)
+	{
+	return;
+	}
+
+static STORE_OBJECT *mem_generate(STORE *s, STORE_OBJECT_TYPES type,
+	OPENSSL_ITEM attributes[], OPENSSL_ITEM parameters[])
+	{
+	STOREerr(STORE_F_MEM_GENERATE, STORE_R_NOT_IMPLEMENTED);
+	return 0;
+	}
+static STORE_OBJECT *mem_get(STORE *s, STORE_OBJECT_TYPES type,
+	OPENSSL_ITEM attributes[], OPENSSL_ITEM parameters[])
+	{
+	void *context = mem_list_start(s, type, attributes, parameters);
+	
+	if (context)
+		{
+		STORE_OBJECT *object = mem_list_next(s, context);
+
+		if (mem_list_end(s, context))
+			return object;
+		}
+	return NULL;
+	}
+static int mem_store(STORE *s, STORE_OBJECT_TYPES type,
+	STORE_OBJECT *data, OPENSSL_ITEM attributes[],
+	OPENSSL_ITEM parameters[])
+	{
+	STOREerr(STORE_F_MEM_STORE, STORE_R_NOT_IMPLEMENTED);
+	return 0;
+	}
+static int mem_modify(STORE *s, STORE_OBJECT_TYPES type,
+	OPENSSL_ITEM search_attributes[], OPENSSL_ITEM add_attributes[],
+	OPENSSL_ITEM modify_attributes[], OPENSSL_ITEM delete_attributes[],
+	OPENSSL_ITEM parameters[])
+	{
+	STOREerr(STORE_F_MEM_MODIFY, STORE_R_NOT_IMPLEMENTED);
+	return 0;
+	}
+static int mem_delete(STORE *s, STORE_OBJECT_TYPES type,
+	OPENSSL_ITEM attributes[], OPENSSL_ITEM parameters[])
+	{
+	STOREerr(STORE_F_MEM_DELETE, STORE_R_NOT_IMPLEMENTED);
+	return 0;
+	}
+
+/* The list functions may be the hardest to understand.  Basically,
+   mem_list_start compiles a stack of attribute info elements, and
+   puts that stack into the context to be returned.  mem_list_next
+   will then find the first matching element in the store, and then
+   walk all the way to the end of the store (since any combination
+   of attribute bits above the starting point may match the searched
+   for bit pattern...). */
+static void *mem_list_start(STORE *s, STORE_OBJECT_TYPES type,
+	OPENSSL_ITEM attributes[], OPENSSL_ITEM parameters[])
+	{
+	struct mem_ctx_st *context =
+		(struct mem_ctx_st *)OPENSSL_malloc(sizeof(struct mem_ctx_st));
+	void *attribute_context = NULL;
+	STORE_ATTR_INFO *attrs = NULL;
+
+	if (!context)
+		{
+		STOREerr(STORE_F_MEM_LIST_START, ERR_R_MALLOC_FAILURE);
+		return 0;
+		}
+	memset(context, 0, sizeof(struct mem_ctx_st));
+
+	attribute_context = STORE_parse_attrs_start(attributes);
+	if (!attribute_context)
+		{
+		STOREerr(STORE_F_MEM_LIST_START, ERR_R_STORE_LIB);
+		goto err;
+		}
+
+	while((attrs = STORE_parse_attrs_next(attribute_context)))
+		{
+		if (context->search_attributes == NULL)
+			{
+			context->search_attributes =
+				sk_STORE_ATTR_INFO_new(STORE_ATTR_INFO_compare);
+			if (!context->search_attributes)
+				{
+				STOREerr(STORE_F_MEM_LIST_START,
+					ERR_R_MALLOC_FAILURE);
+				goto err;
+				}
+			}
+		sk_STORE_ATTR_INFO_push(context->search_attributes,attrs);
+		}
+	if (!STORE_parse_attrs_endp(attribute_context))
+		goto err;
+	STORE_parse_attrs_end(attribute_context);
+	context->search_index = -1;
+	context->index = -1;
+	return context;
+ err:
+	if (attribute_context) STORE_parse_attrs_end(attribute_context);
+	mem_list_end(s, context);
+	return NULL;
+	}
+static STORE_OBJECT *mem_list_next(STORE *s, void *handle)
+	{
+	int i;
+	struct mem_ctx_st *context = (struct mem_ctx_st *)handle;
+	struct mem_object_data_st key = { 0, 0, 1 };
+	struct mem_data_st *store =
+		(struct mem_data_st *)STORE_get_ex_data(s, 1);
+	int srch;
+	int cres = 0;
+
+	if (!context)
+		{
+		STOREerr(STORE_F_MEM_LIST_NEXT, ERR_R_PASSED_NULL_PARAMETER);
+		return NULL;
+		}
+	if (!store)
+		{
+		STOREerr(STORE_F_MEM_LIST_NEXT, STORE_R_NO_STORE);
+		return NULL;
+		}
+
+	if (context->search_index == -1)
+		{
+		for (i = 0;
+		     i < sk_STORE_ATTR_INFO_num(context->search_attributes);
+		     i++)
+			{
+			key.attr_info
+			  = sk_STORE_ATTR_INFO_value(context->search_attributes,
+						     i);
+			srch = sk_MEM_OBJECT_DATA_find_ex(store->data, &key);
+
+			if (srch >= 0)
+				{
+				context->search_index = srch;
+				break;
+				}
+			}
+		}
+	if (context->search_index < 0)
+		return NULL;
+	
+	key.attr_info =
+		sk_STORE_ATTR_INFO_value(context->search_attributes,
+					 context->search_index);
+	for(srch = context->search_index;
+	    srch < sk_MEM_OBJECT_DATA_num(store->data)
+		    && STORE_ATTR_INFO_in_range(key.attr_info,
+			    sk_MEM_OBJECT_DATA_value(store->data, srch)->attr_info)
+		    && !(cres = STORE_ATTR_INFO_in_ex(key.attr_info,
+				 sk_MEM_OBJECT_DATA_value(store->data, srch)->attr_info));
+	    srch++)
+		;
+
+	context->search_index = srch;
+	if (cres)
+		return (sk_MEM_OBJECT_DATA_value(store->data, srch))->object;
+	return NULL;
+	}
+static int mem_list_end(STORE *s, void *handle)
+	{
+	struct mem_ctx_st *context = (struct mem_ctx_st *)handle;
+
+	if (!context)
+		{
+		STOREerr(STORE_F_MEM_LIST_END, ERR_R_PASSED_NULL_PARAMETER);
+		return 0;
+		}
+	if (context && context->search_attributes)
+		sk_STORE_ATTR_INFO_free(context->search_attributes);
+	if (context) OPENSSL_free(context);
+	return 1;
+	}
+static int mem_list_endp(STORE *s, void *handle)
+	{
+	struct mem_ctx_st *context = (struct mem_ctx_st *)handle;
+
+	if (!context
+	    || context->search_index
+	       == sk_STORE_ATTR_INFO_num(context->search_attributes))
+		return 1;
+	return 0;
+	}
+static int mem_lock(STORE *s, OPENSSL_ITEM attributes[],
+	OPENSSL_ITEM parameters[])
+	{
+	return 1;
+	}
+static int mem_unlock(STORE *s, OPENSSL_ITEM attributes[],
+	OPENSSL_ITEM parameters[])
+	{
+	return 1;
+	}
+static int mem_ctrl(STORE *s, int cmd, long l, void *p, void (*f)(void))
+	{
+	return 1;
+	}