Sweden-Number/dlls/crypt32/regstore.c

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/*
* Copyright 2004-2007 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 "winreg.h"
#include "winuser.h"
#include "wine/debug.h"
#include "crypt32_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(crypt);
typedef struct _WINE_HASH_TO_DELETE
{
BYTE hash[20];
struct list entry;
} WINE_HASH_TO_DELETE;
typedef struct _WINE_REGSTOREINFO
{
DWORD dwOpenFlags;
HCERTSTORE memStore;
HKEY key;
BOOL dirty;
CRITICAL_SECTION cs;
struct list certsToDelete;
struct list crlsToDelete;
struct list ctlsToDelete;
} WINE_REGSTOREINFO;
static void CRYPT_HashToStr(const BYTE *hash, LPWSTR asciiHash)
{
static const WCHAR fmt[] = { '%','0','2','X',0 };
DWORD i;
assert(hash);
assert(asciiHash);
for (i = 0; i < 20; i++)
wsprintfW(asciiHash + i * 2, fmt, hash[i]);
}
static const WCHAR CertsW[] = { 'C','e','r','t','i','f','i','c','a','t','e','s',
0 };
static const WCHAR CRLsW[] = { 'C','R','L','s',0 };
static const WCHAR CTLsW[] = { 'C','T','L','s',0 };
static const WCHAR BlobW[] = { 'B','l','o','b',0 };
static void CRYPT_RegReadSerializedFromReg(HKEY key, DWORD contextType,
HCERTSTORE store)
{
LONG rc;
DWORD index = 0;
WCHAR subKeyName[MAX_PATH];
do {
DWORD size = sizeof(subKeyName) / sizeof(WCHAR);
rc = RegEnumKeyExW(key, index++, subKeyName, &size, NULL, NULL, NULL,
NULL);
if (!rc)
{
HKEY subKey;
rc = RegOpenKeyExW(key, subKeyName, 0, KEY_READ, &subKey);
if (!rc)
{
LPBYTE buf = NULL;
size = 0;
rc = RegQueryValueExW(subKey, BlobW, NULL, NULL, NULL, &size);
if (!rc)
buf = CryptMemAlloc(size);
if (buf)
{
rc = RegQueryValueExW(subKey, BlobW, NULL, NULL, buf,
&size);
if (!rc)
{
const void *context;
DWORD addedType;
TRACE("Adding cert with hash %s\n",
debugstr_w(subKeyName));
context = CRYPT_ReadSerializedElement(buf, size,
contextType, &addedType);
if (context)
{
const WINE_CONTEXT_INTERFACE *contextInterface;
BYTE hash[20];
switch (addedType)
{
case CERT_STORE_CERTIFICATE_CONTEXT:
contextInterface = pCertInterface;
break;
case CERT_STORE_CRL_CONTEXT:
contextInterface = pCRLInterface;
break;
case CERT_STORE_CTL_CONTEXT:
contextInterface = pCTLInterface;
break;
default:
contextInterface = NULL;
}
if (contextInterface)
{
size = sizeof(hash);
if (contextInterface->getProp(context,
CERT_HASH_PROP_ID, hash, &size))
{
WCHAR asciiHash[20 * 2 + 1];
CRYPT_HashToStr(hash, asciiHash);
TRACE("comparing %s\n",
debugstr_w(asciiHash));
TRACE("with %s\n", debugstr_w(subKeyName));
if (!lstrcmpW(asciiHash, subKeyName))
{
TRACE("hash matches, adding\n");
contextInterface->addContextToStore(
store, context,
CERT_STORE_ADD_REPLACE_EXISTING, NULL);
}
else
TRACE("hash doesn't match, ignoring\n");
}
Context_Release(context_from_ptr(context));
}
}
}
CryptMemFree(buf);
}
RegCloseKey(subKey);
}
/* Ignore intermediate errors, continue enumerating */
rc = ERROR_SUCCESS;
}
} while (!rc);
}
static void CRYPT_RegReadFromReg(HKEY key, HCERTSTORE store)
{
static const WCHAR * const subKeys[] = { CertsW, CRLsW, CTLsW };
static const DWORD contextFlags[] = { CERT_STORE_CERTIFICATE_CONTEXT_FLAG,
CERT_STORE_CRL_CONTEXT_FLAG, CERT_STORE_CTL_CONTEXT_FLAG };
DWORD i;
for (i = 0; i < sizeof(subKeys) / sizeof(subKeys[0]); i++)
{
HKEY hKey;
LONG rc;
rc = RegCreateKeyExW(key, subKeys[i], 0, NULL, 0, KEY_READ, NULL,
&hKey, NULL);
if (!rc)
{
CRYPT_RegReadSerializedFromReg(hKey, contextFlags[i], store);
RegCloseKey(hKey);
}
}
}
/* Hash is assumed to be 20 bytes in length (a SHA-1 hash) */
static BOOL CRYPT_WriteSerializedToReg(HKEY key, DWORD flags, const BYTE *hash, const BYTE *buf,
DWORD len)
{
WCHAR asciiHash[20 * 2 + 1];
LONG rc;
HKEY subKey;
BOOL ret;
CRYPT_HashToStr(hash, asciiHash);
rc = RegCreateKeyExW(key, asciiHash, 0, NULL, flags, KEY_ALL_ACCESS, NULL,
&subKey, NULL);
if (!rc)
{
rc = RegSetValueExW(subKey, BlobW, 0, REG_BINARY, buf, len);
RegCloseKey(subKey);
}
if (!rc)
ret = TRUE;
else
{
SetLastError(rc);
ret = FALSE;
}
return ret;
}
BOOL CRYPT_SerializeContextsToReg(HKEY key, DWORD flags,
const WINE_CONTEXT_INTERFACE *contextInterface, HCERTSTORE memStore)
{
const void *context = NULL;
BOOL ret;
do {
context = contextInterface->enumContextsInStore(memStore, context);
if (context)
{
BYTE hash[20];
DWORD hashSize = sizeof(hash);
ret = contextInterface->getProp(context, CERT_HASH_PROP_ID, hash,
&hashSize);
if (ret)
{
DWORD size = 0;
LPBYTE buf = NULL;
ret = contextInterface->serialize(context, 0, NULL, &size);
if (size)
buf = CryptMemAlloc(size);
if (buf)
{
ret = contextInterface->serialize(context, 0, buf, &size);
if (ret)
ret = CRYPT_WriteSerializedToReg(key, flags, hash, buf, size);
}
CryptMemFree(buf);
}
}
else
ret = TRUE;
} while (ret && context != NULL);
if (context)
Context_Release(context_from_ptr(context));
return ret;
}
static BOOL CRYPT_RegWriteToReg(WINE_REGSTOREINFO *store)
{
static const WCHAR * const subKeys[] = { CertsW, CRLsW, CTLsW };
const WINE_CONTEXT_INTERFACE * const interfaces[] = { pCertInterface,
pCRLInterface, pCTLInterface };
struct list *listToDelete[] = { &store->certsToDelete, &store->crlsToDelete,
&store->ctlsToDelete };
BOOL ret = TRUE;
DWORD i;
for (i = 0; ret && i < sizeof(subKeys) / sizeof(subKeys[0]); i++)
{
HKEY key;
LONG rc = RegCreateKeyExW(store->key, subKeys[i], 0, NULL, 0,
KEY_ALL_ACCESS, NULL, &key, NULL);
if (!rc)
{
if (listToDelete[i])
{
WINE_HASH_TO_DELETE *toDelete, *next;
WCHAR asciiHash[20 * 2 + 1];
EnterCriticalSection(&store->cs);
LIST_FOR_EACH_ENTRY_SAFE(toDelete, next, listToDelete[i],
WINE_HASH_TO_DELETE, entry)
{
LONG rc;
CRYPT_HashToStr(toDelete->hash, asciiHash);
TRACE("Removing %s\n", debugstr_w(asciiHash));
rc = RegDeleteKeyW(key, asciiHash);
if (rc != ERROR_SUCCESS && rc != ERROR_FILE_NOT_FOUND)
{
SetLastError(rc);
ret = FALSE;
}
list_remove(&toDelete->entry);
CryptMemFree(toDelete);
}
LeaveCriticalSection(&store->cs);
}
ret = CRYPT_SerializeContextsToReg(key, 0, interfaces[i], store->memStore);
RegCloseKey(key);
}
else
{
SetLastError(rc);
ret = FALSE;
}
}
return ret;
}
/* If force is true or the registry store is dirty, writes the contents of the
* store to the registry.
*/
static BOOL CRYPT_RegFlushStore(WINE_REGSTOREINFO *store, BOOL force)
{
BOOL ret;
TRACE("(%p, %d)\n", store, force);
if (store->dirty || force)
ret = CRYPT_RegWriteToReg(store);
else
ret = TRUE;
return ret;
}
static void WINAPI CRYPT_RegCloseStore(HCERTSTORE hCertStore, DWORD dwFlags)
{
WINE_REGSTOREINFO *store = hCertStore;
TRACE("(%p, %08x)\n", store, dwFlags);
if (dwFlags)
FIXME("Unimplemented flags: %08x\n", dwFlags);
CRYPT_RegFlushStore(store, FALSE);
RegCloseKey(store->key);
store->cs.DebugInfo->Spare[0] = 0;
DeleteCriticalSection(&store->cs);
CryptMemFree(store);
}
static BOOL CRYPT_RegWriteContext(WINE_REGSTOREINFO *store,
const void *context, DWORD dwFlags)
{
BOOL ret;
if (dwFlags & CERT_STORE_PROV_WRITE_ADD_FLAG)
{
store->dirty = TRUE;
ret = TRUE;
}
else
ret = FALSE;
return ret;
}
static BOOL CRYPT_RegDeleteContext(WINE_REGSTOREINFO *store,
struct list *deleteList, const void *context,
const WINE_CONTEXT_INTERFACE *contextInterface)
{
BOOL ret;
if (store->dwOpenFlags & CERT_STORE_READONLY_FLAG)
{
SetLastError(ERROR_ACCESS_DENIED);
ret = FALSE;
}
else
{
WINE_HASH_TO_DELETE *toDelete = CryptMemAlloc(sizeof(WINE_HASH_TO_DELETE));
if (toDelete)
{
DWORD size = sizeof(toDelete->hash);
ret = contextInterface->getProp(context, CERT_HASH_PROP_ID,
toDelete->hash, &size);
if (ret)
{
EnterCriticalSection(&store->cs);
list_add_tail(deleteList, &toDelete->entry);
LeaveCriticalSection(&store->cs);
}
else
{
CryptMemFree(toDelete);
ret = FALSE;
}
}
else
ret = FALSE;
if (ret)
store->dirty = TRUE;
}
return ret;
}
static BOOL WINAPI CRYPT_RegWriteCert(HCERTSTORE hCertStore,
PCCERT_CONTEXT cert, DWORD dwFlags)
{
WINE_REGSTOREINFO *store = hCertStore;
TRACE("(%p, %p, %d)\n", hCertStore, cert, dwFlags);
return CRYPT_RegWriteContext(store, cert, dwFlags);
}
static BOOL WINAPI CRYPT_RegDeleteCert(HCERTSTORE hCertStore,
PCCERT_CONTEXT pCertContext, DWORD dwFlags)
{
WINE_REGSTOREINFO *store = hCertStore;
TRACE("(%p, %p, %08x)\n", store, pCertContext, dwFlags);
return CRYPT_RegDeleteContext(store, &store->certsToDelete, pCertContext,
pCertInterface);
}
static BOOL WINAPI CRYPT_RegWriteCRL(HCERTSTORE hCertStore,
PCCRL_CONTEXT crl, DWORD dwFlags)
{
WINE_REGSTOREINFO *store = hCertStore;
TRACE("(%p, %p, %d)\n", hCertStore, crl, dwFlags);
return CRYPT_RegWriteContext(store, crl, dwFlags);
}
static BOOL WINAPI CRYPT_RegDeleteCRL(HCERTSTORE hCertStore,
PCCRL_CONTEXT pCrlContext, DWORD dwFlags)
{
WINE_REGSTOREINFO *store = hCertStore;
TRACE("(%p, %p, %08x)\n", store, pCrlContext, dwFlags);
return CRYPT_RegDeleteContext(store, &store->crlsToDelete, pCrlContext,
pCRLInterface);
}
static BOOL WINAPI CRYPT_RegWriteCTL(HCERTSTORE hCertStore,
PCCTL_CONTEXT ctl, DWORD dwFlags)
{
WINE_REGSTOREINFO *store = hCertStore;
TRACE("(%p, %p, %d)\n", hCertStore, ctl, dwFlags);
return CRYPT_RegWriteContext(store, ctl, dwFlags);
}
static BOOL WINAPI CRYPT_RegDeleteCTL(HCERTSTORE hCertStore,
PCCTL_CONTEXT pCtlContext, DWORD dwFlags)
{
WINE_REGSTOREINFO *store = hCertStore;
TRACE("(%p, %p, %08x)\n", store, pCtlContext, dwFlags);
return CRYPT_RegDeleteContext(store, &store->ctlsToDelete, pCtlContext,
pCTLInterface);
}
static BOOL WINAPI CRYPT_RegControl(HCERTSTORE hCertStore, DWORD dwFlags,
DWORD dwCtrlType, void const *pvCtrlPara)
{
WINE_REGSTOREINFO *store = hCertStore;
BOOL ret;
TRACE("(%p, %08x, %d, %p)\n", hCertStore, dwFlags, dwCtrlType,
pvCtrlPara);
switch (dwCtrlType)
{
case CERT_STORE_CTRL_RESYNC:
{
HCERTSTORE memStore = CertOpenStore(CERT_STORE_PROV_MEMORY, 0, 0,
CERT_STORE_CREATE_NEW_FLAG, NULL);
CRYPT_RegFlushStore(store, FALSE);
CRYPT_RegReadFromReg(store->key, memStore);
I_CertUpdateStore(store->memStore, memStore, 0, 0);
CertCloseStore(memStore, 0);
ret = TRUE;
break;
}
case CERT_STORE_CTRL_COMMIT:
ret = CRYPT_RegFlushStore(store,
dwFlags & CERT_STORE_CTRL_COMMIT_FORCE_FLAG);
break;
case CERT_STORE_CTRL_AUTO_RESYNC:
FIXME("CERT_STORE_CTRL_AUTO_RESYNC: stub\n");
ret = TRUE;
break;
default:
FIXME("%d: stub\n", dwCtrlType);
ret = FALSE;
}
return ret;
}
static void *regProvFuncs[] = {
CRYPT_RegCloseStore,
NULL, /* CERT_STORE_PROV_READ_CERT_FUNC */
CRYPT_RegWriteCert,
CRYPT_RegDeleteCert,
NULL, /* CERT_STORE_PROV_SET_CERT_PROPERTY_FUNC */
NULL, /* CERT_STORE_PROV_READ_CRL_FUNC */
CRYPT_RegWriteCRL,
CRYPT_RegDeleteCRL,
NULL, /* CERT_STORE_PROV_SET_CRL_PROPERTY_FUNC */
NULL, /* CERT_STORE_PROV_READ_CTL_FUNC */
CRYPT_RegWriteCTL,
CRYPT_RegDeleteCTL,
NULL, /* CERT_STORE_PROV_SET_CTL_PROPERTY_FUNC */
CRYPT_RegControl,
};
WINECRYPT_CERTSTORE *CRYPT_RegOpenStore(HCRYPTPROV hCryptProv, DWORD dwFlags,
const void *pvPara)
{
WINECRYPT_CERTSTORE *store = NULL;
TRACE("(%ld, %08x, %p)\n", hCryptProv, dwFlags, pvPara);
if (dwFlags & CERT_STORE_DELETE_FLAG)
{
DWORD rc = RegDeleteTreeW((HKEY)pvPara, CertsW);
if (rc == ERROR_SUCCESS || rc == ERROR_NO_MORE_ITEMS)
rc = RegDeleteTreeW((HKEY)pvPara, CRLsW);
if (rc == ERROR_SUCCESS || rc == ERROR_NO_MORE_ITEMS)
rc = RegDeleteTreeW((HKEY)pvPara, CTLsW);
if (rc == ERROR_NO_MORE_ITEMS)
rc = ERROR_SUCCESS;
SetLastError(rc);
}
else
{
HKEY key;
if (DuplicateHandle(GetCurrentProcess(), (HANDLE)pvPara,
GetCurrentProcess(), (LPHANDLE)&key,
dwFlags & CERT_STORE_READONLY_FLAG ? KEY_READ : KEY_ALL_ACCESS,
TRUE, 0))
{
WINECRYPT_CERTSTORE *memStore;
memStore = CertOpenStore(CERT_STORE_PROV_MEMORY, 0, hCryptProv,
CERT_STORE_CREATE_NEW_FLAG, NULL);
if (memStore)
{
WINE_REGSTOREINFO *regInfo = CryptMemAlloc(
sizeof(WINE_REGSTOREINFO));
if (regInfo)
{
CERT_STORE_PROV_INFO provInfo = { 0 };
regInfo->dwOpenFlags = dwFlags;
regInfo->memStore = memStore;
regInfo->key = key;
InitializeCriticalSection(&regInfo->cs);
regInfo->cs.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": PWINE_REGSTOREINFO->cs");
list_init(&regInfo->certsToDelete);
list_init(&regInfo->crlsToDelete);
list_init(&regInfo->ctlsToDelete);
CRYPT_RegReadFromReg(regInfo->key, regInfo->memStore);
regInfo->dirty = FALSE;
provInfo.cbSize = sizeof(provInfo);
provInfo.cStoreProvFunc = sizeof(regProvFuncs) /
sizeof(regProvFuncs[0]);
provInfo.rgpvStoreProvFunc = regProvFuncs;
provInfo.hStoreProv = regInfo;
store = CRYPT_ProvCreateStore(dwFlags, memStore, &provInfo);
/* Reg store doesn't need crypto provider, so close it */
if (hCryptProv &&
!(dwFlags & CERT_STORE_NO_CRYPT_RELEASE_FLAG))
CryptReleaseContext(hCryptProv, 0);
}
}
}
}
TRACE("returning %p\n", store);
return store;
}