proplist.c 5.62 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
/*
 * Copyright 2004-2006 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
16
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49
 */
#include <assert.h>
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "wincrypt.h"
#include "wine/debug.h"
#include "wine/list.h"
#include "crypt32_private.h"

WINE_DEFAULT_DEBUG_CHANNEL(crypt);

typedef struct _CONTEXT_PROPERTY_LIST
{
    CRITICAL_SECTION cs;
    struct list      properties;
} CONTEXT_PROPERTY_LIST;

typedef struct _CONTEXT_PROPERTY
{
    DWORD       propID;
    DWORD       cbData;
    LPBYTE      pbData;
    struct list entry;
} CONTEXT_PROPERTY, *PCONTEXT_PROPERTY;

PCONTEXT_PROPERTY_LIST ContextPropertyList_Create(void)
{
    PCONTEXT_PROPERTY_LIST list = CryptMemAlloc(sizeof(CONTEXT_PROPERTY_LIST));

    if (list)
    {
        InitializeCriticalSection(&list->cs);
50
        list->cs.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": PCONTEXT_PROPERTY_LIST->cs");
51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66
        list_init(&list->properties);
    }
    return list;
}

void ContextPropertyList_Free(PCONTEXT_PROPERTY_LIST list)
{
    PCONTEXT_PROPERTY prop, next;

    LIST_FOR_EACH_ENTRY_SAFE(prop, next, &list->properties, CONTEXT_PROPERTY,
     entry)
    {
        list_remove(&prop->entry);
        CryptMemFree(prop->pbData);
        CryptMemFree(prop);
    }
67
    list->cs.DebugInfo->Spare[0] = 0;
68 69 70 71 72 73 74 75 76 77
    DeleteCriticalSection(&list->cs);
    CryptMemFree(list);
}

BOOL ContextPropertyList_FindProperty(PCONTEXT_PROPERTY_LIST list, DWORD id,
 PCRYPT_DATA_BLOB blob)
{
    PCONTEXT_PROPERTY prop;
    BOOL ret = FALSE;

78
    TRACE("(%p, %d, %p)\n", list, id, blob);
79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161

    EnterCriticalSection(&list->cs);
    LIST_FOR_EACH_ENTRY(prop, &list->properties, CONTEXT_PROPERTY, entry)
    {
        if (prop->propID == id)
        {
            blob->cbData = prop->cbData;
            blob->pbData = prop->pbData;
            ret = TRUE;
            break;
        }
    }
    LeaveCriticalSection(&list->cs);
    return ret;
}

BOOL ContextPropertyList_SetProperty(PCONTEXT_PROPERTY_LIST list, DWORD id,
 const BYTE *pbData, size_t cbData)
{
    LPBYTE data;
    BOOL ret = FALSE;

    if (cbData)
    {
        data = CryptMemAlloc(cbData);
        if (data)
            memcpy(data, pbData, cbData);
    }
    else
        data = NULL;
    if (!cbData || data)
    {
        PCONTEXT_PROPERTY prop;
        BOOL found = FALSE;

        EnterCriticalSection(&list->cs);
        LIST_FOR_EACH_ENTRY(prop, &list->properties, CONTEXT_PROPERTY, entry)
        {
            if (prop->propID == id)
            {
                found = TRUE;
                break;
            }
        }
        if (found)
        {
            CryptMemFree(prop->pbData);
            prop->cbData = cbData;
            prop->pbData = data;
            ret = TRUE;
        }
        else
        {
            prop = CryptMemAlloc(sizeof(CONTEXT_PROPERTY));
            if (prop)
            {
                prop->propID = id;
                prop->cbData = cbData;
                prop->pbData = data;
                list_add_tail(&list->properties, &prop->entry);
                ret = TRUE;
            }
            else
                CryptMemFree(data);
        }
        LeaveCriticalSection(&list->cs);
    }
    return ret;
}

void ContextPropertyList_RemoveProperty(PCONTEXT_PROPERTY_LIST list, DWORD id)
{
    PCONTEXT_PROPERTY prop, next;

    EnterCriticalSection(&list->cs);
    LIST_FOR_EACH_ENTRY_SAFE(prop, next, &list->properties, CONTEXT_PROPERTY,
     entry)
    {
        if (prop->propID == id)
        {
            list_remove(&prop->entry);
            CryptMemFree(prop->pbData);
            CryptMemFree(prop);
Juan Lang's avatar
Juan Lang committed
162
            break;
163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217
        }
    }
    LeaveCriticalSection(&list->cs);
}

/* Since the properties are stored in a list, this is a tad inefficient
 * (O(n^2)) since I have to find the previous position every time.
 */
DWORD ContextPropertyList_EnumPropIDs(PCONTEXT_PROPERTY_LIST list, DWORD id)
{
    DWORD ret;

    EnterCriticalSection(&list->cs);
    if (id)
    {
        PCONTEXT_PROPERTY cursor = NULL;

        LIST_FOR_EACH_ENTRY(cursor, &list->properties, CONTEXT_PROPERTY, entry)
        {
            if (cursor->propID == id)
                break;
        }
        if (cursor)
        {
            if (cursor->entry.next != &list->properties)
                ret = LIST_ENTRY(cursor->entry.next, CONTEXT_PROPERTY,
                 entry)->propID;
            else
                ret = 0;
        }
        else
            ret = 0;
    }
    else if (!list_empty(&list->properties))
        ret = LIST_ENTRY(list->properties.next, CONTEXT_PROPERTY,
         entry)->propID;
    else
        ret = 0;
    LeaveCriticalSection(&list->cs);
    return ret;
}

void ContextPropertyList_Copy(PCONTEXT_PROPERTY_LIST to,
 PCONTEXT_PROPERTY_LIST from)
{
    PCONTEXT_PROPERTY prop;

    EnterCriticalSection(&from->cs);
    LIST_FOR_EACH_ENTRY(prop, &from->properties, CONTEXT_PROPERTY, entry)
    {
        ContextPropertyList_SetProperty(to, prop->propID, prop->pbData,
         prop->cbData);
    }
    LeaveCriticalSection(&from->cs);
}