regstore.c 17.5 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
/*
 * 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;
34
} WINE_HASH_TO_DELETE;
35 36 37 38 39 40 41 42 43 44

typedef struct _WINE_REGSTOREINFO
{
    DWORD            dwOpenFlags;
    HCERTSTORE       memStore;
    HKEY             key;
    BOOL             dirty;
    CRITICAL_SECTION cs;
    struct list      certsToDelete;
    struct list      crlsToDelete;
45
    struct list      ctlsToDelete;
46
} WINE_REGSTOREINFO;
47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65

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 };

66 67
static void CRYPT_RegReadSerializedFromReg(HKEY key, DWORD contextType,
 HCERTSTORE store)
68 69 70 71 72 73 74 75 76 77 78 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
{
    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(
139
                                         store, context,
140 141 142 143 144
                                         CERT_STORE_ADD_REPLACE_EXISTING, NULL);
                                    }
                                    else
                                        TRACE("hash doesn't match, ignoring\n");
                                }
145
                                Context_Release(context_from_ptr(context));
146 147 148 149 150 151 152 153 154 155 156 157 158
                            }
                        }
                    }
                    CryptMemFree(buf);
                }
                RegCloseKey(subKey);
            }
            /* Ignore intermediate errors, continue enumerating */
            rc = ERROR_SUCCESS;
        }
    } while (!rc);
}

159
static void CRYPT_RegReadFromReg(HKEY key, HCERTSTORE store)
160 161 162 163 164 165 166 167
{
    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++)
    {
168
        HKEY hKey;
169 170
        LONG rc;

171 172
        rc = RegCreateKeyExW(key, subKeys[i], 0, NULL, 0, KEY_READ, NULL,
         &hKey, NULL);
173 174
        if (!rc)
        {
175 176
            CRYPT_RegReadSerializedFromReg(hKey, contextFlags[i], store);
            RegCloseKey(hKey);
177 178 179 180 181
        }
    }
}

/* Hash is assumed to be 20 bytes in length (a SHA-1 hash) */
182
static BOOL CRYPT_WriteSerializedToReg(HKEY key, DWORD flags, const BYTE *hash, const BYTE *buf,
183 184 185 186 187 188 189 190
 DWORD len)
{
    WCHAR asciiHash[20 * 2 + 1];
    LONG rc;
    HKEY subKey;
    BOOL ret;

    CRYPT_HashToStr(hash, asciiHash);
191
    rc = RegCreateKeyExW(key, asciiHash, 0, NULL, flags, KEY_ALL_ACCESS, NULL,
192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207
     &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;
}

208
BOOL CRYPT_SerializeContextsToReg(HKEY key, DWORD flags,
209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234
 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)
235
                        ret = CRYPT_WriteSerializedToReg(key, flags, hash, buf, size);
236 237 238 239 240 241 242 243
                }
                CryptMemFree(buf);
            }
        }
        else
            ret = TRUE;
    } while (ret && context != NULL);
    if (context)
244
        Context_Release(context_from_ptr(context));
245 246 247
    return ret;
}

248
static BOOL CRYPT_RegWriteToReg(WINE_REGSTOREINFO *store)
249 250 251 252 253
{
    static const WCHAR * const subKeys[] = { CertsW, CRLsW, CTLsW };
    const WINE_CONTEXT_INTERFACE * const interfaces[] = { pCertInterface,
     pCRLInterface, pCTLInterface };
    struct list *listToDelete[] = { &store->certsToDelete, &store->crlsToDelete,
254
     &store->ctlsToDelete };
255 256 257 258 259 260 261 262 263 264 265 266 267
    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])
            {
268
                WINE_HASH_TO_DELETE *toDelete, *next;
269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289
                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);
            }
290
            ret = CRYPT_SerializeContextsToReg(key, 0, interfaces[i], store->memStore);
291 292 293 294 295 296 297 298 299 300 301 302 303 304
            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.
 */
305
static BOOL CRYPT_RegFlushStore(WINE_REGSTOREINFO *store, BOOL force)
306 307 308 309 310 311 312 313 314 315 316 317 318 319
{
    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)
{
320
    WINE_REGSTOREINFO *store = hCertStore;
321 322 323 324 325 326 327 328 329 330 331 332

    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);
}

333
static BOOL CRYPT_RegWriteContext(WINE_REGSTOREINFO *store,
334 335 336 337 338 339 340 341 342 343 344 345 346 347
 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;
}

348
static BOOL CRYPT_RegDeleteContext(WINE_REGSTOREINFO *store,
349
 struct list *deleteList, const void *context,
350
 const WINE_CONTEXT_INTERFACE *contextInterface)
351 352 353 354 355 356 357 358 359 360
{
    BOOL ret;

    if (store->dwOpenFlags & CERT_STORE_READONLY_FLAG)
    {
        SetLastError(ERROR_ACCESS_DENIED);
        ret = FALSE;
    }
    else
    {
361
        WINE_HASH_TO_DELETE *toDelete = CryptMemAlloc(sizeof(WINE_HASH_TO_DELETE));
362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391

        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)
{
392
    WINE_REGSTOREINFO *store = hCertStore;
393 394 395 396 397 398 399 400 401

    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)
{
402
    WINE_REGSTOREINFO *store = hCertStore;
403 404 405 406 407 408 409 410 411 412

    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)
{
413
    WINE_REGSTOREINFO *store = hCertStore;
414 415 416 417 418 419 420 421 422

    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)
{
423
    WINE_REGSTOREINFO *store = hCertStore;
424 425 426 427 428 429 430

    TRACE("(%p, %p, %08x)\n", store, pCrlContext, dwFlags);

    return CRYPT_RegDeleteContext(store, &store->crlsToDelete, pCrlContext,
     pCRLInterface);
}

431 432 433
static BOOL WINAPI CRYPT_RegWriteCTL(HCERTSTORE hCertStore,
 PCCTL_CONTEXT ctl, DWORD dwFlags)
{
434
    WINE_REGSTOREINFO *store = hCertStore;
435 436 437 438 439 440 441 442 443

    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)
{
444
    WINE_REGSTOREINFO *store = hCertStore;
445 446 447 448 449 450 451

    TRACE("(%p, %p, %08x)\n", store, pCtlContext, dwFlags);

    return CRYPT_RegDeleteContext(store, &store->ctlsToDelete, pCtlContext,
     pCTLInterface);
}

452 453 454
static BOOL WINAPI CRYPT_RegControl(HCERTSTORE hCertStore, DWORD dwFlags,
 DWORD dwCtrlType, void const *pvCtrlPara)
{
455
    WINE_REGSTOREINFO *store = hCertStore;
456 457 458 459 460 461 462 463
    BOOL ret;

    TRACE("(%p, %08x, %d, %p)\n", hCertStore, dwFlags, dwCtrlType,
     pvCtrlPara);

    switch (dwCtrlType)
    {
    case CERT_STORE_CTRL_RESYNC:
464 465 466 467
    {
        HCERTSTORE memStore = CertOpenStore(CERT_STORE_PROV_MEMORY, 0, 0,
         CERT_STORE_CREATE_NEW_FLAG, NULL);

468
        CRYPT_RegFlushStore(store, FALSE);
469 470 471
        CRYPT_RegReadFromReg(store->key, memStore);
        I_CertUpdateStore(store->memStore, memStore, 0, 0);
        CertCloseStore(memStore, 0);
472 473
        ret = TRUE;
        break;
474
    }
475 476 477 478
    case CERT_STORE_CTRL_COMMIT:
        ret = CRYPT_RegFlushStore(store,
         dwFlags & CERT_STORE_CTRL_COMMIT_FORCE_FLAG);
        break;
479 480 481 482
    case CERT_STORE_CTRL_AUTO_RESYNC:
        FIXME("CERT_STORE_CTRL_AUTO_RESYNC: stub\n");
        ret = TRUE;
        break;
483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500
    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 */
501 502
    CRYPT_RegWriteCTL,
    CRYPT_RegDeleteCTL,
503 504 505 506
    NULL, /* CERT_STORE_PROV_SET_CTL_PROPERTY_FUNC */
    CRYPT_RegControl,
};

507
WINECRYPT_CERTSTORE *CRYPT_RegOpenStore(HCRYPTPROV hCryptProv, DWORD dwFlags,
508 509
 const void *pvPara)
{
510
    WINECRYPT_CERTSTORE *store = NULL;
511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534

    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))
        {
535
            WINECRYPT_CERTSTORE *memStore;
536 537 538 539 540

            memStore = CertOpenStore(CERT_STORE_PROV_MEMORY, 0, hCryptProv,
             CERT_STORE_CREATE_NEW_FLAG, NULL);
            if (memStore)
            {
541
                WINE_REGSTOREINFO *regInfo = CryptMemAlloc(
542 543 544 545 546 547 548 549 550 551 552 553 554
                 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);
555
                    list_init(&regInfo->ctlsToDelete);
556
                    CRYPT_RegReadFromReg(regInfo->key, regInfo->memStore);
557 558 559 560 561 562
                    regInfo->dirty = FALSE;
                    provInfo.cbSize = sizeof(provInfo);
                    provInfo.cStoreProvFunc = sizeof(regProvFuncs) /
                     sizeof(regProvFuncs[0]);
                    provInfo.rgpvStoreProvFunc = regProvFuncs;
                    provInfo.hStoreProv = regInfo;
563 564 565 566 567
                    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);
568 569 570 571 572 573 574
                }
            }
        }
    }
    TRACE("returning %p\n", store);
    return store;
}