regstore.c 17.4 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 34 35 36 37 38 39 40 41 42 43 44 45
/*
 * 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 "wine/list.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, *PWINE_HASH_TO_DELETE;

typedef struct _WINE_REGSTOREINFO
{
    DWORD            dwOpenFlags;
    HCERTSTORE       memStore;
    HKEY             key;
    BOOL             dirty;
    CRITICAL_SECTION cs;
    struct list      certsToDelete;
    struct list      crlsToDelete;
46
    struct list      ctlsToDelete;
47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66
} WINE_REGSTOREINFO, *PWINE_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 };

67 68
static void CRYPT_RegReadSerializedFromReg(HKEY key, DWORD contextType,
 HCERTSTORE store)
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139
{
    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(
140
                                         store, context,
141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159
                                         CERT_STORE_ADD_REPLACE_EXISTING, NULL);
                                    }
                                    else
                                        TRACE("hash doesn't match, ignoring\n");
                                }
                                contextInterface->free(context);
                            }
                        }
                    }
                    CryptMemFree(buf);
                }
                RegCloseKey(subKey);
            }
            /* Ignore intermediate errors, continue enumerating */
            rc = ERROR_SUCCESS;
        }
    } while (!rc);
}

160
static void CRYPT_RegReadFromReg(HKEY key, HCERTSTORE store)
161 162 163 164 165 166 167 168
{
    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++)
    {
169
        HKEY hKey;
170 171
        LONG rc;

172 173
        rc = RegCreateKeyExW(key, subKeys[i], 0, NULL, 0, KEY_READ, NULL,
         &hKey, NULL);
174 175
        if (!rc)
        {
176 177
            CRYPT_RegReadSerializedFromReg(hKey, contextFlags[i], store);
            RegCloseKey(hKey);
178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254
        }
    }
}

/* Hash is assumed to be 20 bytes in length (a SHA-1 hash) */
static BOOL CRYPT_WriteSerializedToReg(HKEY key, 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, 0, 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;
}

static BOOL CRYPT_SerializeContextsToReg(HKEY key,
 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, hash, buf, size);
                }
                CryptMemFree(buf);
            }
        }
        else
            ret = TRUE;
    } while (ret && context != NULL);
    if (context)
        contextInterface->free(context);
    return ret;
}

static BOOL CRYPT_RegWriteToReg(PWINE_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,
255
     &store->ctlsToDelete };
256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321
    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])
            {
                PWINE_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, 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(PWINE_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)
{
322
    PWINE_REGSTOREINFO store = hCertStore;
323 324 325 326 327 328 329 330 331 332 333 334

    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);
}

335
static BOOL CRYPT_RegWriteContext(PWINE_REGSTOREINFO store,
336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394
 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(PWINE_REGSTOREINFO store,
 struct list *deleteList, const void *context,
 PCWINE_CONTEXT_INTERFACE contextInterface)
{
    BOOL ret;

    if (store->dwOpenFlags & CERT_STORE_READONLY_FLAG)
    {
        SetLastError(ERROR_ACCESS_DENIED);
        ret = FALSE;
    }
    else
    {
        PWINE_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)
{
395
    PWINE_REGSTOREINFO store = hCertStore;
396 397 398 399 400 401 402 403 404

    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)
{
405
    PWINE_REGSTOREINFO store = hCertStore;
406 407 408 409 410 411 412 413 414 415

    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)
{
416
    PWINE_REGSTOREINFO store = hCertStore;
417 418 419 420 421 422 423 424 425

    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)
{
426
    PWINE_REGSTOREINFO store = hCertStore;
427 428 429 430 431 432 433

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

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

434 435 436
static BOOL WINAPI CRYPT_RegWriteCTL(HCERTSTORE hCertStore,
 PCCTL_CONTEXT ctl, DWORD dwFlags)
{
437
    PWINE_REGSTOREINFO store = hCertStore;
438 439 440 441 442 443 444 445 446

    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)
{
447
    PWINE_REGSTOREINFO store = hCertStore;
448 449 450 451 452 453 454

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

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

455 456 457
static BOOL WINAPI CRYPT_RegControl(HCERTSTORE hCertStore, DWORD dwFlags,
 DWORD dwCtrlType, void const *pvCtrlPara)
{
458
    PWINE_REGSTOREINFO store = hCertStore;
459 460 461 462 463 464 465 466
    BOOL ret;

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

    switch (dwCtrlType)
    {
    case CERT_STORE_CTRL_RESYNC:
467 468 469 470
    {
        HCERTSTORE memStore = CertOpenStore(CERT_STORE_PROV_MEMORY, 0, 0,
         CERT_STORE_CREATE_NEW_FLAG, NULL);

471
        CRYPT_RegFlushStore(store, FALSE);
472 473 474
        CRYPT_RegReadFromReg(store->key, memStore);
        I_CertUpdateStore(store->memStore, memStore, 0, 0);
        CertCloseStore(memStore, 0);
475 476
        ret = TRUE;
        break;
477
    }
478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499
    case CERT_STORE_CTRL_COMMIT:
        ret = CRYPT_RegFlushStore(store,
         dwFlags & CERT_STORE_CTRL_COMMIT_FORCE_FLAG);
        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 */
500 501
    CRYPT_RegWriteCTL,
    CRYPT_RegDeleteCTL,
502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553
    NULL, /* CERT_STORE_PROV_SET_CTL_PROPERTY_FUNC */
    CRYPT_RegControl,
};

PWINECRYPT_CERTSTORE CRYPT_RegOpenStore(HCRYPTPROV hCryptProv, DWORD dwFlags,
 const void *pvPara)
{
    PWINECRYPT_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))
        {
            PWINECRYPT_CERTSTORE memStore;

            memStore = CertOpenStore(CERT_STORE_PROV_MEMORY, 0, hCryptProv,
             CERT_STORE_CREATE_NEW_FLAG, NULL);
            if (memStore)
            {
                PWINE_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);
554
                    list_init(&regInfo->ctlsToDelete);
555
                    CRYPT_RegReadFromReg(regInfo->key, regInfo->memStore);
556 557 558 559 560 561
                    regInfo->dirty = FALSE;
                    provInfo.cbSize = sizeof(provInfo);
                    provInfo.cStoreProvFunc = sizeof(regProvFuncs) /
                     sizeof(regProvFuncs[0]);
                    provInfo.rgpvStoreProvFunc = regProvFuncs;
                    provInfo.hStoreProv = regInfo;
562 563 564 565 566
                    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);
567 568 569 570 571 572 573
                }
            }
        }
    }
    TRACE("returning %p\n", store);
    return store;
}