b91c6be8dc6764cc6f0d072c6bc663cd44195426
[reactos.git] / dll / win32 / wininet / netconnection.c
1 /*
2 * Wininet - networking layer
3 *
4 * Copyright 2002 TransGaming Technologies Inc.
5 * Copyright 2013 Jacek Caban for CodeWeavers
6 *
7 * David Hammerton
8 *
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 */
23
24 #define NONAMELESSUNION
25
26 #include "ws2tcpip.h"
27
28 #include <time.h>
29 #include <stdarg.h>
30 #include <stdlib.h>
31 #include <string.h>
32 #include <stdio.h>
33 #include <assert.h>
34
35 #include "wine/library.h"
36 #include "windef.h"
37 #include "winbase.h"
38 #include "wininet.h"
39 #include "winerror.h"
40
41 #include "wine/debug.h"
42 #include "internet.h"
43
44 WINE_DEFAULT_DEBUG_CHANNEL(wininet);
45
46 static DWORD netconn_verify_cert(netconn_t *conn, PCCERT_CONTEXT cert, HCERTSTORE store)
47 {
48 BOOL ret;
49 CERT_CHAIN_PARA chainPara = { sizeof(chainPara), { 0 } };
50 PCCERT_CHAIN_CONTEXT chain;
51 char oid_server_auth[] = szOID_PKIX_KP_SERVER_AUTH;
52 char *server_auth[] = { oid_server_auth };
53 DWORD err = ERROR_SUCCESS, errors;
54
55 static const DWORD supportedErrors =
56 CERT_TRUST_IS_NOT_TIME_VALID |
57 CERT_TRUST_IS_UNTRUSTED_ROOT |
58 CERT_TRUST_IS_PARTIAL_CHAIN |
59 CERT_TRUST_IS_NOT_SIGNATURE_VALID |
60 CERT_TRUST_IS_NOT_VALID_FOR_USAGE;
61
62 TRACE("verifying %s\n", debugstr_w(conn->server->name));
63
64 chainPara.RequestedUsage.Usage.cUsageIdentifier = 1;
65 chainPara.RequestedUsage.Usage.rgpszUsageIdentifier = server_auth;
66 if (!(ret = CertGetCertificateChain(NULL, cert, NULL, store, &chainPara, 0, NULL, &chain))) {
67 TRACE("failed\n");
68 return GetLastError();
69 }
70
71 errors = chain->TrustStatus.dwErrorStatus;
72
73 do {
74 /* This seems strange, but that's what tests show */
75 if(errors & CERT_TRUST_IS_PARTIAL_CHAIN) {
76 WARN("ERROR_INTERNET_SEC_CERT_REV_FAILED\n");
77 err = ERROR_INTERNET_SEC_CERT_REV_FAILED;
78 if(conn->mask_errors)
79 conn->security_flags |= _SECURITY_FLAG_CERT_REV_FAILED;
80 if(!(conn->security_flags & SECURITY_FLAG_IGNORE_REVOCATION))
81 break;
82 }
83
84 if (chain->TrustStatus.dwErrorStatus & ~supportedErrors) {
85 WARN("error status %x\n", chain->TrustStatus.dwErrorStatus & ~supportedErrors);
86 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_INVALID_CERT;
87 errors &= supportedErrors;
88 if(!conn->mask_errors)
89 break;
90 WARN("unknown error flags\n");
91 }
92
93 if(errors & CERT_TRUST_IS_NOT_TIME_VALID) {
94 WARN("CERT_TRUST_IS_NOT_TIME_VALID\n");
95 if(!(conn->security_flags & SECURITY_FLAG_IGNORE_CERT_DATE_INVALID)) {
96 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_CERT_DATE_INVALID;
97 if(!conn->mask_errors)
98 break;
99 conn->security_flags |= _SECURITY_FLAG_CERT_INVALID_DATE;
100 }
101 errors &= ~CERT_TRUST_IS_NOT_TIME_VALID;
102 }
103
104 if(errors & CERT_TRUST_IS_UNTRUSTED_ROOT) {
105 WARN("CERT_TRUST_IS_UNTRUSTED_ROOT\n");
106 if(!(conn->security_flags & SECURITY_FLAG_IGNORE_UNKNOWN_CA)) {
107 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_INVALID_CA;
108 if(!conn->mask_errors)
109 break;
110 conn->security_flags |= _SECURITY_FLAG_CERT_INVALID_CA;
111 }
112 errors &= ~CERT_TRUST_IS_UNTRUSTED_ROOT;
113 }
114
115 if(errors & CERT_TRUST_IS_PARTIAL_CHAIN) {
116 WARN("CERT_TRUST_IS_PARTIAL_CHAIN\n");
117 if(!(conn->security_flags & SECURITY_FLAG_IGNORE_UNKNOWN_CA)) {
118 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_INVALID_CA;
119 if(!conn->mask_errors)
120 break;
121 conn->security_flags |= _SECURITY_FLAG_CERT_INVALID_CA;
122 }
123 errors &= ~CERT_TRUST_IS_PARTIAL_CHAIN;
124 }
125
126 if(errors & CERT_TRUST_IS_NOT_SIGNATURE_VALID) {
127 WARN("CERT_TRUST_IS_NOT_SIGNATURE_VALID\n");
128 if(!(conn->security_flags & SECURITY_FLAG_IGNORE_UNKNOWN_CA)) {
129 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_INVALID_CA;
130 if(!conn->mask_errors)
131 break;
132 conn->security_flags |= _SECURITY_FLAG_CERT_INVALID_CA;
133 }
134 errors &= ~CERT_TRUST_IS_NOT_SIGNATURE_VALID;
135 }
136
137 if(errors & CERT_TRUST_IS_NOT_VALID_FOR_USAGE) {
138 WARN("CERT_TRUST_IS_NOT_VALID_FOR_USAGE\n");
139 if(!(conn->security_flags & SECURITY_FLAG_IGNORE_WRONG_USAGE)) {
140 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_INVALID_CERT;
141 if(!conn->mask_errors)
142 break;
143 WARN("CERT_TRUST_IS_NOT_VALID_FOR_USAGE, unknown error flags\n");
144 }
145 errors &= ~CERT_TRUST_IS_NOT_VALID_FOR_USAGE;
146 }
147
148 if(err == ERROR_INTERNET_SEC_CERT_REV_FAILED) {
149 assert(conn->security_flags & SECURITY_FLAG_IGNORE_REVOCATION);
150 err = ERROR_SUCCESS;
151 }
152 }while(0);
153
154 if(!err || conn->mask_errors) {
155 CERT_CHAIN_POLICY_PARA policyPara;
156 SSL_EXTRA_CERT_CHAIN_POLICY_PARA sslExtraPolicyPara;
157 CERT_CHAIN_POLICY_STATUS policyStatus;
158 CERT_CHAIN_CONTEXT chainCopy;
159
160 /* Clear chain->TrustStatus.dwErrorStatus so
161 * CertVerifyCertificateChainPolicy will verify additional checks
162 * rather than stopping with an existing, ignored error.
163 */
164 memcpy(&chainCopy, chain, sizeof(chainCopy));
165 chainCopy.TrustStatus.dwErrorStatus = 0;
166 sslExtraPolicyPara.u.cbSize = sizeof(sslExtraPolicyPara);
167 sslExtraPolicyPara.dwAuthType = AUTHTYPE_SERVER;
168 sslExtraPolicyPara.pwszServerName = conn->server->name;
169 sslExtraPolicyPara.fdwChecks = conn->security_flags;
170 policyPara.cbSize = sizeof(policyPara);
171 policyPara.dwFlags = 0;
172 policyPara.pvExtraPolicyPara = &sslExtraPolicyPara;
173 ret = CertVerifyCertificateChainPolicy(CERT_CHAIN_POLICY_SSL,
174 &chainCopy, &policyPara, &policyStatus);
175 /* Any error in the policy status indicates that the
176 * policy couldn't be verified.
177 */
178 if(ret) {
179 if(policyStatus.dwError == CERT_E_CN_NO_MATCH) {
180 WARN("CERT_E_CN_NO_MATCH\n");
181 if(conn->mask_errors)
182 conn->security_flags |= _SECURITY_FLAG_CERT_INVALID_CN;
183 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_CERT_CN_INVALID;
184 }else if(policyStatus.dwError) {
185 WARN("policyStatus.dwError %x\n", policyStatus.dwError);
186 if(conn->mask_errors)
187 WARN("unknown error flags for policy status %x\n", policyStatus.dwError);
188 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_INVALID_CERT;
189 }
190 }else {
191 err = GetLastError();
192 }
193 }
194
195 if(err) {
196 WARN("failed %u\n", err);
197 CertFreeCertificateChain(chain);
198 if(conn->server->cert_chain) {
199 CertFreeCertificateChain(conn->server->cert_chain);
200 conn->server->cert_chain = NULL;
201 }
202 if(conn->mask_errors)
203 conn->server->security_flags |= conn->security_flags & _SECURITY_ERROR_FLAGS_MASK;
204 return err;
205 }
206
207 /* FIXME: Reuse cached chain */
208 if(conn->server->cert_chain)
209 CertFreeCertificateChain(chain);
210 else
211 conn->server->cert_chain = chain;
212 return ERROR_SUCCESS;
213 }
214
215 static SecHandle cred_handle, compat_cred_handle;
216 static BOOL cred_handle_initialized, have_compat_cred_handle;
217
218 static CRITICAL_SECTION init_sechandle_cs;
219 static CRITICAL_SECTION_DEBUG init_sechandle_cs_debug = {
220 0, 0, &init_sechandle_cs,
221 { &init_sechandle_cs_debug.ProcessLocksList,
222 &init_sechandle_cs_debug.ProcessLocksList },
223 0, 0, { (DWORD_PTR)(__FILE__ ": init_sechandle_cs") }
224 };
225 static CRITICAL_SECTION init_sechandle_cs = { &init_sechandle_cs_debug, -1, 0, 0, 0, 0 };
226
227 static BOOL ensure_cred_handle(void)
228 {
229 SECURITY_STATUS res = SEC_E_OK;
230
231 EnterCriticalSection(&init_sechandle_cs);
232
233 if(!cred_handle_initialized) {
234 SCHANNEL_CRED cred = {SCHANNEL_CRED_VERSION};
235 SecPkgCred_SupportedProtocols prots;
236
237 res = AcquireCredentialsHandleW(NULL, (WCHAR*)UNISP_NAME_W, SECPKG_CRED_OUTBOUND, NULL, &cred,
238 NULL, NULL, &cred_handle, NULL);
239 if(res == SEC_E_OK) {
240 res = QueryCredentialsAttributesA(&cred_handle, SECPKG_ATTR_SUPPORTED_PROTOCOLS, &prots);
241 if(res != SEC_E_OK || (prots.grbitProtocol & SP_PROT_TLS1_1PLUS_CLIENT)) {
242 cred.grbitEnabledProtocols = prots.grbitProtocol & ~SP_PROT_TLS1_1PLUS_CLIENT;
243 res = AcquireCredentialsHandleW(NULL, (WCHAR*)UNISP_NAME_W, SECPKG_CRED_OUTBOUND, NULL, &cred,
244 NULL, NULL, &compat_cred_handle, NULL);
245 have_compat_cred_handle = res == SEC_E_OK;
246 }
247 }
248
249 cred_handle_initialized = res == SEC_E_OK;
250 }
251
252 LeaveCriticalSection(&init_sechandle_cs);
253
254 if(res != SEC_E_OK) {
255 WARN("Failed: %08x\n", res);
256 return FALSE;
257 }
258
259 return TRUE;
260 }
261
262 static BOOL winsock_loaded = FALSE;
263
264 static BOOL WINAPI winsock_startup(INIT_ONCE *once, void *param, void **context)
265 {
266 WSADATA wsa_data;
267 DWORD res;
268
269 res = WSAStartup(MAKEWORD(2,2), &wsa_data);
270 if(res == ERROR_SUCCESS)
271 winsock_loaded = TRUE;
272 else
273 ERR("WSAStartup failed: %u\n", res);
274 return TRUE;
275 }
276
277 void init_winsock(void)
278 {
279 static INIT_ONCE init_once = INIT_ONCE_STATIC_INIT;
280 InitOnceExecuteOnce(&init_once, winsock_startup, NULL, NULL);
281 }
282
283 static void set_socket_blocking(netconn_t *conn, BOOL is_blocking)
284 {
285 if(conn->is_blocking != is_blocking) {
286 ULONG arg = !is_blocking;
287 ioctlsocket(conn->socket, FIONBIO, &arg);
288 }
289 conn->is_blocking = is_blocking;
290 }
291
292 static DWORD create_netconn_socket(server_t *server, netconn_t *netconn, DWORD timeout)
293 {
294 int result;
295 ULONG flag;
296 DWORD res;
297
298 init_winsock();
299
300 assert(server->addr_len);
301 result = netconn->socket = socket(server->addr.ss_family, SOCK_STREAM, 0);
302 if(result != -1) {
303 set_socket_blocking(netconn, FALSE);
304 result = connect(netconn->socket, (struct sockaddr*)&server->addr, server->addr_len);
305 if(result == -1)
306 {
307 res = WSAGetLastError();
308 if (res == WSAEINPROGRESS || res == WSAEWOULDBLOCK) {
309 FD_SET set;
310 int res;
311 socklen_t len = sizeof(res);
312 TIMEVAL timeout_timeval = {0, timeout*1000};
313
314 FD_ZERO(&set);
315 FD_SET(netconn->socket, &set);
316 res = select(netconn->socket+1, NULL, &set, NULL, &timeout_timeval);
317 if(!res || res == SOCKET_ERROR) {
318 closesocket(netconn->socket);
319 netconn->socket = -1;
320 return ERROR_INTERNET_CANNOT_CONNECT;
321 }
322 if (!getsockopt(netconn->socket, SOL_SOCKET, SO_ERROR, (void *)&res, &len) && !res)
323 result = 0;
324 }
325 }
326 if(result == -1)
327 {
328 closesocket(netconn->socket);
329 netconn->socket = -1;
330 }
331 }
332 if(result == -1)
333 return ERROR_INTERNET_CANNOT_CONNECT;
334
335 flag = 1;
336 result = setsockopt(netconn->socket, IPPROTO_TCP, TCP_NODELAY, (void*)&flag, sizeof(flag));
337 if(result < 0)
338 WARN("setsockopt(TCP_NODELAY) failed\n");
339
340 return ERROR_SUCCESS;
341 }
342
343 DWORD create_netconn(BOOL useSSL, server_t *server, DWORD security_flags, BOOL mask_errors, DWORD timeout, netconn_t **ret)
344 {
345 netconn_t *netconn;
346 int result;
347
348 netconn = heap_alloc_zero(sizeof(*netconn));
349 if(!netconn)
350 return ERROR_OUTOFMEMORY;
351
352 netconn->socket = -1;
353 netconn->security_flags = security_flags | server->security_flags;
354 netconn->mask_errors = mask_errors;
355 list_init(&netconn->pool_entry);
356 SecInvalidateHandle(&netconn->ssl_ctx);
357
358 result = create_netconn_socket(server, netconn, timeout);
359 if (result != ERROR_SUCCESS) {
360 heap_free(netconn);
361 return result;
362 }
363
364 server_addref(server);
365 netconn->server = server;
366 *ret = netconn;
367 return result;
368 }
369
370 BOOL is_valid_netconn(netconn_t *netconn)
371 {
372 return netconn && netconn->socket != -1;
373 }
374
375 void close_netconn(netconn_t *netconn)
376 {
377 closesocket(netconn->socket);
378 netconn->socket = -1;
379 }
380
381 void free_netconn(netconn_t *netconn)
382 {
383 server_release(netconn->server);
384
385 if (netconn->secure) {
386 heap_free(netconn->peek_msg_mem);
387 netconn->peek_msg_mem = NULL;
388 netconn->peek_msg = NULL;
389 netconn->peek_len = 0;
390 heap_free(netconn->ssl_buf);
391 netconn->ssl_buf = NULL;
392 heap_free(netconn->extra_buf);
393 netconn->extra_buf = NULL;
394 netconn->extra_len = 0;
395 if (SecIsValidHandle(&netconn->ssl_ctx))
396 DeleteSecurityContext(&netconn->ssl_ctx);
397 }
398
399 close_netconn(netconn);
400 heap_free(netconn);
401 }
402
403 void NETCON_unload(void)
404 {
405 if(cred_handle_initialized)
406 FreeCredentialsHandle(&cred_handle);
407 if(have_compat_cred_handle)
408 FreeCredentialsHandle(&compat_cred_handle);
409 DeleteCriticalSection(&init_sechandle_cs);
410 if(winsock_loaded)
411 WSACleanup();
412 }
413
414 int sock_send(int fd, const void *msg, size_t len, int flags)
415 {
416 int ret;
417 do
418 {
419 ret = send(fd, msg, len, flags);
420 }
421 while(ret == -1 && WSAGetLastError() == WSAEINTR);
422 return ret;
423 }
424
425 int sock_recv(int fd, void *msg, size_t len, int flags)
426 {
427 int ret;
428 do
429 {
430 ret = recv(fd, msg, len, flags);
431 }
432 while(ret == -1 && WSAGetLastError() == WSAEINTR);
433 return ret;
434 }
435
436 static DWORD netcon_secure_connect_setup(netconn_t *connection, BOOL compat_mode)
437 {
438 SecBuffer out_buf = {0, SECBUFFER_TOKEN, NULL}, in_bufs[2] = {{0, SECBUFFER_TOKEN}, {0, SECBUFFER_EMPTY}};
439 SecBufferDesc out_desc = {SECBUFFER_VERSION, 1, &out_buf}, in_desc = {SECBUFFER_VERSION, 2, in_bufs};
440 SecHandle *cred = &cred_handle;
441 BYTE *read_buf;
442 SIZE_T read_buf_size = 2048;
443 ULONG attrs = 0;
444 CtxtHandle ctx;
445 SSIZE_T size;
446 int bits;
447 const CERT_CONTEXT *cert;
448 SECURITY_STATUS status;
449 DWORD res = ERROR_SUCCESS;
450
451 const DWORD isc_req_flags = ISC_REQ_ALLOCATE_MEMORY|ISC_REQ_USE_SESSION_KEY|ISC_REQ_CONFIDENTIALITY
452 |ISC_REQ_SEQUENCE_DETECT|ISC_REQ_REPLAY_DETECT|ISC_REQ_MANUAL_CRED_VALIDATION;
453
454 if(!ensure_cred_handle())
455 return ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
456
457 if(compat_mode) {
458 if(!have_compat_cred_handle)
459 return ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
460 cred = &compat_cred_handle;
461 }
462
463 read_buf = heap_alloc(read_buf_size);
464 if(!read_buf)
465 return ERROR_OUTOFMEMORY;
466
467 status = InitializeSecurityContextW(cred, NULL, connection->server->name, isc_req_flags, 0, 0, NULL, 0,
468 &ctx, &out_desc, &attrs, NULL);
469
470 assert(status != SEC_E_OK);
471
472 set_socket_blocking(connection, TRUE);
473
474 while(status == SEC_I_CONTINUE_NEEDED || status == SEC_E_INCOMPLETE_MESSAGE) {
475 if(out_buf.cbBuffer) {
476 assert(status == SEC_I_CONTINUE_NEEDED);
477
478 TRACE("sending %u bytes\n", out_buf.cbBuffer);
479
480 size = sock_send(connection->socket, out_buf.pvBuffer, out_buf.cbBuffer, 0);
481 if(size != out_buf.cbBuffer) {
482 ERR("send failed\n");
483 status = ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
484 break;
485 }
486
487 FreeContextBuffer(out_buf.pvBuffer);
488 out_buf.pvBuffer = NULL;
489 out_buf.cbBuffer = 0;
490 }
491
492 if(status == SEC_I_CONTINUE_NEEDED) {
493 assert(in_bufs[1].cbBuffer < read_buf_size);
494
495 memmove(read_buf, (BYTE*)in_bufs[0].pvBuffer+in_bufs[0].cbBuffer-in_bufs[1].cbBuffer, in_bufs[1].cbBuffer);
496 in_bufs[0].cbBuffer = in_bufs[1].cbBuffer;
497
498 in_bufs[1].BufferType = SECBUFFER_EMPTY;
499 in_bufs[1].cbBuffer = 0;
500 in_bufs[1].pvBuffer = NULL;
501 }
502
503 assert(in_bufs[0].BufferType == SECBUFFER_TOKEN);
504 assert(in_bufs[1].BufferType == SECBUFFER_EMPTY);
505
506 if(in_bufs[0].cbBuffer + 1024 > read_buf_size) {
507 BYTE *new_read_buf;
508
509 new_read_buf = heap_realloc(read_buf, read_buf_size + 1024);
510 if(!new_read_buf) {
511 status = E_OUTOFMEMORY;
512 break;
513 }
514
515 in_bufs[0].pvBuffer = read_buf = new_read_buf;
516 read_buf_size += 1024;
517 }
518
519 size = sock_recv(connection->socket, read_buf+in_bufs[0].cbBuffer, read_buf_size-in_bufs[0].cbBuffer, 0);
520 if(size < 1) {
521 WARN("recv error\n");
522 res = ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
523 break;
524 }
525
526 TRACE("recv %lu bytes\n", size);
527
528 in_bufs[0].cbBuffer += size;
529 in_bufs[0].pvBuffer = read_buf;
530 status = InitializeSecurityContextW(cred, &ctx, connection->server->name, isc_req_flags, 0, 0, &in_desc,
531 0, NULL, &out_desc, &attrs, NULL);
532 TRACE("InitializeSecurityContext ret %08x\n", status);
533
534 if(status == SEC_E_OK) {
535 if(SecIsValidHandle(&connection->ssl_ctx))
536 DeleteSecurityContext(&connection->ssl_ctx);
537 connection->ssl_ctx = ctx;
538
539 if(in_bufs[1].BufferType == SECBUFFER_EXTRA)
540 FIXME("SECBUFFER_EXTRA not supported\n");
541
542 status = QueryContextAttributesW(&ctx, SECPKG_ATTR_STREAM_SIZES, &connection->ssl_sizes);
543 if(status != SEC_E_OK) {
544 WARN("Could not get sizes\n");
545 break;
546 }
547
548 status = QueryContextAttributesW(&ctx, SECPKG_ATTR_REMOTE_CERT_CONTEXT, (void*)&cert);
549 if(status == SEC_E_OK) {
550 res = netconn_verify_cert(connection, cert, cert->hCertStore);
551 CertFreeCertificateContext(cert);
552 if(res != ERROR_SUCCESS) {
553 WARN("cert verify failed: %u\n", res);
554 break;
555 }
556 }else {
557 WARN("Could not get cert\n");
558 break;
559 }
560
561 connection->ssl_buf = heap_alloc(connection->ssl_sizes.cbHeader + connection->ssl_sizes.cbMaximumMessage
562 + connection->ssl_sizes.cbTrailer);
563 if(!connection->ssl_buf) {
564 res = GetLastError();
565 break;
566 }
567 }
568 }
569
570 heap_free(read_buf);
571
572 if(status != SEC_E_OK || res != ERROR_SUCCESS) {
573 WARN("Failed to establish SSL connection: %08x (%u)\n", status, res);
574 heap_free(connection->ssl_buf);
575 connection->ssl_buf = NULL;
576 return res ? res : ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
577 }
578
579 TRACE("established SSL connection\n");
580 connection->secure = TRUE;
581 connection->security_flags |= SECURITY_FLAG_SECURE;
582
583 bits = NETCON_GetCipherStrength(connection);
584 if (bits >= 128)
585 connection->security_flags |= SECURITY_FLAG_STRENGTH_STRONG;
586 else if (bits >= 56)
587 connection->security_flags |= SECURITY_FLAG_STRENGTH_MEDIUM;
588 else
589 connection->security_flags |= SECURITY_FLAG_STRENGTH_WEAK;
590
591 if(connection->mask_errors)
592 connection->server->security_flags = connection->security_flags;
593 return ERROR_SUCCESS;
594 }
595
596 /******************************************************************************
597 * NETCON_secure_connect
598 * Initiates a secure connection over an existing plaintext connection.
599 */
600 DWORD NETCON_secure_connect(netconn_t *connection, server_t *server)
601 {
602 DWORD res;
603
604 /* can't connect if we are already connected */
605 if(connection->secure) {
606 ERR("already connected\n");
607 return ERROR_INTERNET_CANNOT_CONNECT;
608 }
609
610 if(server != connection->server) {
611 server_release(connection->server);
612 server_addref(server);
613 connection->server = server;
614 }
615
616 /* connect with given TLS options */
617 res = netcon_secure_connect_setup(connection, FALSE);
618 if (res == ERROR_SUCCESS)
619 return res;
620
621 /* FIXME: when got version alert and FIN from server */
622 /* fallback to connect without TLSv1.1/TLSv1.2 */
623 if (res == ERROR_INTERNET_SECURITY_CHANNEL_ERROR && have_compat_cred_handle)
624 {
625 closesocket(connection->socket);
626 res = create_netconn_socket(connection->server, connection, 500);
627 if (res != ERROR_SUCCESS)
628 return res;
629 res = netcon_secure_connect_setup(connection, TRUE);
630 }
631 return res;
632 }
633
634 static BOOL send_ssl_chunk(netconn_t *conn, const void *msg, size_t size)
635 {
636 SecBuffer bufs[4] = {
637 {conn->ssl_sizes.cbHeader, SECBUFFER_STREAM_HEADER, conn->ssl_buf},
638 {size, SECBUFFER_DATA, conn->ssl_buf+conn->ssl_sizes.cbHeader},
639 {conn->ssl_sizes.cbTrailer, SECBUFFER_STREAM_TRAILER, conn->ssl_buf+conn->ssl_sizes.cbHeader+size},
640 {0, SECBUFFER_EMPTY, NULL}
641 };
642 SecBufferDesc buf_desc = {SECBUFFER_VERSION, sizeof(bufs)/sizeof(*bufs), bufs};
643 SECURITY_STATUS res;
644
645 memcpy(bufs[1].pvBuffer, msg, size);
646 res = EncryptMessage(&conn->ssl_ctx, 0, &buf_desc, 0);
647 if(res != SEC_E_OK) {
648 WARN("EncryptMessage failed\n");
649 return FALSE;
650 }
651
652 if(sock_send(conn->socket, conn->ssl_buf, bufs[0].cbBuffer+bufs[1].cbBuffer+bufs[2].cbBuffer, 0) < 1) {
653 WARN("send failed\n");
654 return FALSE;
655 }
656
657 return TRUE;
658 }
659
660 /******************************************************************************
661 * NETCON_send
662 * Basically calls 'send()' unless we should use SSL
663 * number of chars send is put in *sent
664 */
665 DWORD NETCON_send(netconn_t *connection, const void *msg, size_t len, int flags,
666 int *sent /* out */)
667 {
668 /* send is always blocking. */
669 set_socket_blocking(connection, TRUE);
670
671 if(!connection->secure)
672 {
673 *sent = sock_send(connection->socket, msg, len, flags);
674 return *sent == -1 ? WSAGetLastError() : ERROR_SUCCESS;
675 }
676 else
677 {
678 const BYTE *ptr = msg;
679 size_t chunk_size;
680
681 *sent = 0;
682
683 while(len) {
684 chunk_size = min(len, connection->ssl_sizes.cbMaximumMessage);
685 if(!send_ssl_chunk(connection, ptr, chunk_size))
686 return ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
687
688 *sent += chunk_size;
689 ptr += chunk_size;
690 len -= chunk_size;
691 }
692
693 return ERROR_SUCCESS;
694 }
695 }
696
697 static BOOL read_ssl_chunk(netconn_t *conn, void *buf, SIZE_T buf_size, BOOL blocking, SIZE_T *ret_size, BOOL *eof)
698 {
699 const SIZE_T ssl_buf_size = conn->ssl_sizes.cbHeader+conn->ssl_sizes.cbMaximumMessage+conn->ssl_sizes.cbTrailer;
700 SecBuffer bufs[4];
701 SecBufferDesc buf_desc = {SECBUFFER_VERSION, sizeof(bufs)/sizeof(*bufs), bufs};
702 SSIZE_T size, buf_len = 0;
703 int i;
704 SECURITY_STATUS res;
705
706 assert(conn->extra_len < ssl_buf_size);
707
708 if(conn->extra_len) {
709 memcpy(conn->ssl_buf, conn->extra_buf, conn->extra_len);
710 buf_len = conn->extra_len;
711 conn->extra_len = 0;
712 heap_free(conn->extra_buf);
713 conn->extra_buf = NULL;
714 }
715
716 set_socket_blocking(conn, blocking && !buf_len);
717 size = sock_recv(conn->socket, conn->ssl_buf+buf_len, ssl_buf_size-buf_len, 0);
718 if(size < 0) {
719 if(!buf_len) {
720 if(WSAGetLastError() == WSAEWOULDBLOCK) {
721 TRACE("would block\n");
722 return WSAEWOULDBLOCK;
723 }
724 WARN("recv failed\n");
725 return ERROR_INTERNET_CONNECTION_ABORTED;
726 }
727 }else {
728 buf_len += size;
729 }
730
731 if(!buf_len) {
732 TRACE("EOF\n");
733 *eof = TRUE;
734 *ret_size = 0;
735 return ERROR_SUCCESS;
736 }
737
738 *eof = FALSE;
739
740 do {
741 memset(bufs, 0, sizeof(bufs));
742 bufs[0].BufferType = SECBUFFER_DATA;
743 bufs[0].cbBuffer = buf_len;
744 bufs[0].pvBuffer = conn->ssl_buf;
745
746 res = DecryptMessage(&conn->ssl_ctx, &buf_desc, 0, NULL);
747 switch(res) {
748 case SEC_E_OK:
749 break;
750 case SEC_I_CONTEXT_EXPIRED:
751 TRACE("context expired\n");
752 *eof = TRUE;
753 return ERROR_SUCCESS;
754 case SEC_E_INCOMPLETE_MESSAGE:
755 assert(buf_len < ssl_buf_size);
756
757 set_socket_blocking(conn, blocking);
758 size = sock_recv(conn->socket, conn->ssl_buf+buf_len, ssl_buf_size-buf_len, 0);
759 if(size < 1) {
760 if(size < 0 && WSAGetLastError() == WSAEWOULDBLOCK) {
761 TRACE("would block\n");
762
763 /* FIXME: Optimize extra_buf usage. */
764 conn->extra_buf = heap_alloc(buf_len);
765 if(!conn->extra_buf)
766 return ERROR_NOT_ENOUGH_MEMORY;
767
768 conn->extra_len = buf_len;
769 memcpy(conn->extra_buf, conn->ssl_buf, conn->extra_len);
770 return WSAEWOULDBLOCK;
771 }
772
773 return ERROR_INTERNET_CONNECTION_ABORTED;
774 }
775
776 buf_len += size;
777 continue;
778 default:
779 WARN("failed: %08x\n", res);
780 return ERROR_INTERNET_CONNECTION_ABORTED;
781 }
782 } while(res != SEC_E_OK);
783
784 for(i=0; i < sizeof(bufs)/sizeof(*bufs); i++) {
785 if(bufs[i].BufferType == SECBUFFER_DATA) {
786 size = min(buf_size, bufs[i].cbBuffer);
787 memcpy(buf, bufs[i].pvBuffer, size);
788 if(size < bufs[i].cbBuffer) {
789 assert(!conn->peek_len);
790 conn->peek_msg_mem = conn->peek_msg = heap_alloc(bufs[i].cbBuffer - size);
791 if(!conn->peek_msg)
792 return ERROR_NOT_ENOUGH_MEMORY;
793 conn->peek_len = bufs[i].cbBuffer-size;
794 memcpy(conn->peek_msg, (char*)bufs[i].pvBuffer+size, conn->peek_len);
795 }
796
797 *ret_size = size;
798 }
799 }
800
801 for(i=0; i < sizeof(bufs)/sizeof(*bufs); i++) {
802 if(bufs[i].BufferType == SECBUFFER_EXTRA) {
803 conn->extra_buf = heap_alloc(bufs[i].cbBuffer);
804 if(!conn->extra_buf)
805 return ERROR_NOT_ENOUGH_MEMORY;
806
807 conn->extra_len = bufs[i].cbBuffer;
808 memcpy(conn->extra_buf, bufs[i].pvBuffer, conn->extra_len);
809 }
810 }
811
812 return ERROR_SUCCESS;
813 }
814
815 /******************************************************************************
816 * NETCON_recv
817 * Basically calls 'recv()' unless we should use SSL
818 * number of chars received is put in *recvd
819 */
820 DWORD NETCON_recv(netconn_t *connection, void *buf, size_t len, BOOL blocking, int *recvd)
821 {
822 *recvd = 0;
823 if (!len)
824 return ERROR_SUCCESS;
825
826 if (!connection->secure)
827 {
828 set_socket_blocking(connection, blocking);
829 *recvd = sock_recv(connection->socket, buf, len, 0);
830 return *recvd == -1 ? WSAGetLastError() : ERROR_SUCCESS;
831 }
832 else
833 {
834 SIZE_T size = 0;
835 BOOL eof;
836 DWORD res;
837
838 if(connection->peek_msg) {
839 size = min(len, connection->peek_len);
840 memcpy(buf, connection->peek_msg, size);
841 connection->peek_len -= size;
842 connection->peek_msg += size;
843
844 if(!connection->peek_len) {
845 heap_free(connection->peek_msg_mem);
846 connection->peek_msg_mem = connection->peek_msg = NULL;
847 }
848
849 *recvd = size;
850 return ERROR_SUCCESS;
851 }
852
853 do {
854 res = read_ssl_chunk(connection, (BYTE*)buf, len, blocking, &size, &eof);
855 if(res != ERROR_SUCCESS) {
856 if(res == WSAEWOULDBLOCK) {
857 if(size)
858 res = ERROR_SUCCESS;
859 }else {
860 WARN("read_ssl_chunk failed\n");
861 }
862 break;
863 }
864 }while(!size && !eof);
865
866 TRACE("received %ld bytes\n", size);
867 *recvd = size;
868 return res;
869 }
870 }
871
872 BOOL NETCON_is_alive(netconn_t *netconn)
873 {
874 int len;
875 char b;
876
877 set_socket_blocking(netconn, FALSE);
878 len = sock_recv(netconn->socket, &b, 1, MSG_PEEK);
879
880 return len == 1 || (len == -1 && WSAGetLastError() == WSAEWOULDBLOCK);
881 }
882
883 LPCVOID NETCON_GetCert(netconn_t *connection)
884 {
885 const CERT_CONTEXT *ret;
886 SECURITY_STATUS res;
887
888 res = QueryContextAttributesW(&connection->ssl_ctx, SECPKG_ATTR_REMOTE_CERT_CONTEXT, (void*)&ret);
889 return res == SEC_E_OK ? ret : NULL;
890 }
891
892 int NETCON_GetCipherStrength(netconn_t *connection)
893 {
894 SecPkgContext_ConnectionInfo conn_info;
895 SECURITY_STATUS res;
896
897 if (!connection->secure)
898 return 0;
899
900 res = QueryContextAttributesW(&connection->ssl_ctx, SECPKG_ATTR_CONNECTION_INFO, (void*)&conn_info);
901 if(res != SEC_E_OK)
902 WARN("QueryContextAttributesW failed: %08x\n", res);
903 return res == SEC_E_OK ? conn_info.dwCipherStrength : 0;
904 }
905
906 DWORD NETCON_set_timeout(netconn_t *connection, BOOL send, DWORD value)
907 {
908 int result;
909
910 result = setsockopt(connection->socket, SOL_SOCKET,
911 send ? SO_SNDTIMEO : SO_RCVTIMEO, (void*)&value,
912 sizeof(value));
913 if (result == -1)
914 {
915 WARN("setsockopt failed\n");
916 return WSAGetLastError();
917 }
918 return ERROR_SUCCESS;
919 }