reactos/dll/win32/crypt32/context.c
2018-03-09 12:59:49 +01:00

132 lines
3.6 KiB
C

/*
* Copyright 2006 Juan Lang
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <assert.h>
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "wincrypt.h"
#include "wine/debug.h"
#include "crypt32_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(context);
context_t *Context_CreateDataContext(size_t contextSize, const context_vtbl_t *vtbl, WINECRYPT_CERTSTORE *store)
{
context_t *context;
context = CryptMemAlloc(sizeof(context_t) + contextSize);
if (!context)
return NULL;
context->properties = ContextPropertyList_Create();
if (!context->properties)
{
CryptMemFree(context);
return NULL;
}
context->vtbl = vtbl;
context->ref = 1;
context->linked = NULL;
store->vtbl->addref(store);
context->store = store;
TRACE("returning %p\n", context);
return context;
}
context_t *Context_CreateLinkContext(unsigned int contextSize, context_t *linked, WINECRYPT_CERTSTORE *store)
{
context_t *context;
TRACE("(%d, %p)\n", contextSize, linked);
context = CryptMemAlloc(sizeof(context_t) + contextSize);
if (!context)
return NULL;
memcpy(context_ptr(context), context_ptr(linked), contextSize);
context->vtbl = linked->vtbl;
context->ref = 1;
context->linked = linked;
context->properties = linked->properties;
Context_AddRef(linked);
store->vtbl->addref(store);
context->store = store;
TRACE("returning %p\n", context);
return context;
}
void Context_AddRef(context_t *context)
{
LONG ref = InterlockedIncrement(&context->ref);
TRACE("(%p) ref=%d\n", context, context->ref);
if(ref == 1) {
/* This is the first external (non-store) reference. Increase store ref cnt. */
context->store->vtbl->addref(context->store);
}
}
void Context_Free(context_t *context)
{
TRACE("(%p)\n", context);
assert(!context->ref);
if (!context->linked) {
ContextPropertyList_Free(context->properties);
context->vtbl->free(context);
}else {
Context_Release(context->linked);
}
CryptMemFree(context);
}
void Context_Release(context_t *context)
{
LONG ref = InterlockedDecrement(&context->ref);
TRACE("(%p) ref=%d\n", context, ref);
assert(ref >= 0);
if (!ref) {
WINECRYPT_CERTSTORE *store = context->store;
/* This is the last reference, but the context still may be in a store.
* We release our store reference, but leave it up to store to free or keep the context. */
store->vtbl->releaseContext(store, context);
store->vtbl->release(store, 0);
}
}
void Context_CopyProperties(const void *to, const void *from)
{
CONTEXT_PROPERTY_LIST *toProperties, *fromProperties;
toProperties = context_from_ptr(to)->properties;
fromProperties = context_from_ptr(from)->properties;
assert(toProperties && fromProperties);
ContextPropertyList_Copy(toProperties, fromProperties);
}