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219 lines
5.6 KiB
C
219 lines
5.6 KiB
C
/*
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* Copyright 2004-2006 Juan Lang
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <assert.h>
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#include <stdarg.h>
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#include "windef.h"
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#include "winbase.h"
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#include "wincrypt.h"
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#include "wine/debug.h"
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#include "wine/list.h"
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#include "crypt32_private.h"
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WINE_DEFAULT_DEBUG_CHANNEL(crypt);
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struct _CONTEXT_PROPERTY_LIST
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{
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CRITICAL_SECTION cs;
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struct list properties;
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};
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typedef struct _CONTEXT_PROPERTY
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{
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DWORD propID;
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DWORD cbData;
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LPBYTE pbData;
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struct list entry;
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} CONTEXT_PROPERTY;
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CONTEXT_PROPERTY_LIST *ContextPropertyList_Create(void)
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{
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CONTEXT_PROPERTY_LIST *list = CryptMemAlloc(sizeof(CONTEXT_PROPERTY_LIST));
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if (list)
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{
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InitializeCriticalSection(&list->cs);
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list->cs.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": PCONTEXT_PROPERTY_LIST->cs");
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list_init(&list->properties);
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}
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return list;
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}
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void ContextPropertyList_Free(CONTEXT_PROPERTY_LIST *list)
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{
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CONTEXT_PROPERTY *prop, *next;
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LIST_FOR_EACH_ENTRY_SAFE(prop, next, &list->properties, CONTEXT_PROPERTY,
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entry)
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{
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list_remove(&prop->entry);
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CryptMemFree(prop->pbData);
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CryptMemFree(prop);
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}
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list->cs.DebugInfo->Spare[0] = 0;
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DeleteCriticalSection(&list->cs);
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CryptMemFree(list);
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}
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BOOL ContextPropertyList_FindProperty(CONTEXT_PROPERTY_LIST *list, DWORD id,
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PCRYPT_DATA_BLOB blob)
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{
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CONTEXT_PROPERTY *prop;
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BOOL ret = FALSE;
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TRACE("(%p, %d, %p)\n", list, id, blob);
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EnterCriticalSection(&list->cs);
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LIST_FOR_EACH_ENTRY(prop, &list->properties, CONTEXT_PROPERTY, entry)
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{
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if (prop->propID == id)
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{
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blob->cbData = prop->cbData;
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blob->pbData = prop->pbData;
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ret = TRUE;
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break;
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}
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}
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LeaveCriticalSection(&list->cs);
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return ret;
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}
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BOOL ContextPropertyList_SetProperty(CONTEXT_PROPERTY_LIST *list, DWORD id,
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const BYTE *pbData, size_t cbData)
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{
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LPBYTE data;
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BOOL ret = FALSE;
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if (cbData)
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{
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data = CryptMemAlloc(cbData);
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if (data)
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memcpy(data, pbData, cbData);
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}
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else
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data = NULL;
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if (!cbData || data)
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{
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CONTEXT_PROPERTY *prop;
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BOOL found = FALSE;
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EnterCriticalSection(&list->cs);
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LIST_FOR_EACH_ENTRY(prop, &list->properties, CONTEXT_PROPERTY, entry)
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{
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if (prop->propID == id)
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{
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found = TRUE;
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break;
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}
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}
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if (found)
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{
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CryptMemFree(prop->pbData);
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prop->cbData = cbData;
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prop->pbData = data;
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ret = TRUE;
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}
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else
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{
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prop = CryptMemAlloc(sizeof(CONTEXT_PROPERTY));
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if (prop)
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{
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prop->propID = id;
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prop->cbData = cbData;
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prop->pbData = data;
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list_add_tail(&list->properties, &prop->entry);
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ret = TRUE;
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}
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else
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CryptMemFree(data);
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}
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LeaveCriticalSection(&list->cs);
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}
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return ret;
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}
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void ContextPropertyList_RemoveProperty(CONTEXT_PROPERTY_LIST *list, DWORD id)
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{
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CONTEXT_PROPERTY *prop;
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EnterCriticalSection(&list->cs);
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LIST_FOR_EACH_ENTRY(prop, &list->properties, CONTEXT_PROPERTY, entry)
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{
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if (prop->propID == id)
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{
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list_remove(&prop->entry);
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CryptMemFree(prop->pbData);
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CryptMemFree(prop);
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break;
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}
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}
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LeaveCriticalSection(&list->cs);
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}
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/* Since the properties are stored in a list, this is a tad inefficient
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* (O(n^2)) since I have to find the previous position every time.
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*/
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DWORD ContextPropertyList_EnumPropIDs(CONTEXT_PROPERTY_LIST *list, DWORD id)
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{
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DWORD ret;
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EnterCriticalSection(&list->cs);
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if (id)
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{
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CONTEXT_PROPERTY *cursor = NULL, *prop;
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LIST_FOR_EACH_ENTRY(prop, &list->properties, CONTEXT_PROPERTY, entry)
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{
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if (prop->propID == id)
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{
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cursor = prop;
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break;
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}
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}
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if (cursor)
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{
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if (cursor->entry.next != &list->properties)
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ret = LIST_ENTRY(cursor->entry.next, CONTEXT_PROPERTY,
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entry)->propID;
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else
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ret = 0;
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}
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else
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ret = 0;
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}
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else if (!list_empty(&list->properties))
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ret = LIST_ENTRY(list->properties.next, CONTEXT_PROPERTY,
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entry)->propID;
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else
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ret = 0;
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LeaveCriticalSection(&list->cs);
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return ret;
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}
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void ContextPropertyList_Copy(CONTEXT_PROPERTY_LIST *to, CONTEXT_PROPERTY_LIST *from)
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{
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CONTEXT_PROPERTY *prop;
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EnterCriticalSection(&from->cs);
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LIST_FOR_EACH_ENTRY(prop, &from->properties, CONTEXT_PROPERTY, entry)
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{
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ContextPropertyList_SetProperty(to, prop->propID, prop->pbData,
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prop->cbData);
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}
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LeaveCriticalSection(&from->cs);
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}
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