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comparison: security/nss/lib/ssl/sslsecur.c

security/nss/lib/ssl/sslsecur.c

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1 /*
2 * Various SSL functions.
3 *
4 * This Source Code Form is subject to the terms of the Mozilla Public
5 * License, v. 2.0. If a copy of the MPL was not distributed with this
6 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
7 #include "cert.h"
8 #include "secitem.h"
9 #include "keyhi.h"
10 #include "ssl.h"
11 #include "sslimpl.h"
12 #include "sslproto.h"
13 #include "secoid.h" /* for SECOID_GetALgorithmTag */
14 #include "pk11func.h" /* for PK11_GenerateRandom */
15 #include "nss.h" /* for NSS_RegisterShutdown */
16 #include "prinit.h" /* for PR_CallOnceWithArg */
17
18 #define MAX_BLOCK_CYPHER_SIZE 32
19
20 #define TEST_FOR_FAILURE /* reminder */
21 #define SET_ERROR_CODE /* reminder */
22
23 /* Returns a SECStatus: SECSuccess or SECFailure, NOT SECWouldBlock.
24 *
25 * Currently, the list of functions called through ss->handshake is:
26 *
27 * In sslsocks.c:
28 * SocksGatherRecord
29 * SocksHandleReply
30 * SocksStartGather
31 *
32 * In sslcon.c:
33 * ssl_GatherRecord1stHandshake
34 * ssl2_HandleClientSessionKeyMessage
35 * ssl2_HandleMessage
36 * ssl2_HandleVerifyMessage
37 * ssl2_BeginClientHandshake
38 * ssl2_BeginServerHandshake
39 * ssl2_HandleClientHelloMessage
40 * ssl2_HandleServerHelloMessage
41 *
42 * The ss->handshake function returns SECWouldBlock under these conditions:
43 * 1. ssl_GatherRecord1stHandshake called ssl2_GatherData which read in
44 * the beginning of an SSL v3 hello message and returned SECWouldBlock
45 * to switch to SSL v3 handshake processing.
46 *
47 * 2. ssl2_HandleClientHelloMessage discovered version 3.0 in the incoming
48 * v2 client hello msg, and called ssl3_HandleV2ClientHello which
49 * returned SECWouldBlock.
50 *
51 * 3. SECWouldBlock was returned by one of the callback functions, via
52 * one of these paths:
53 * - ssl2_HandleMessage() -> ssl2_HandleRequestCertificate() ->
54 * ss->getClientAuthData()
55 *
56 * - ssl2_HandleServerHelloMessage() -> ss->handleBadCert()
57 *
58 * - ssl_GatherRecord1stHandshake() -> ssl3_GatherCompleteHandshake() ->
59 * ssl3_HandleRecord() -> ssl3_HandleHandshake() ->
60 * ssl3_HandleHandshakeMessage() -> ssl3_HandleCertificate() ->
61 * ss->handleBadCert()
62 *
63 * - ssl_GatherRecord1stHandshake() -> ssl3_GatherCompleteHandshake() ->
64 * ssl3_HandleRecord() -> ssl3_HandleHandshake() ->
65 * ssl3_HandleHandshakeMessage() -> ssl3_HandleCertificateRequest() ->
66 * ss->getClientAuthData()
67 *
68 * Called from: SSL_ForceHandshake (below),
69 * ssl_SecureRecv (below) and
70 * ssl_SecureSend (below)
71 * from: WaitForResponse in sslsocks.c
72 * ssl_SocksRecv in sslsocks.c
73 * ssl_SocksSend in sslsocks.c
74 *
75 * Caller must hold the (write) handshakeLock.
76 */
77 int
78 ssl_Do1stHandshake(sslSocket *ss)
79 {
80 int rv = SECSuccess;
81 int loopCount = 0;
82
83 do {
84 PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss) );
85 PORT_Assert(ss->opt.noLocks || !ssl_HaveRecvBufLock(ss));
86 PORT_Assert(ss->opt.noLocks || !ssl_HaveXmitBufLock(ss));
87 PORT_Assert(ss->opt.noLocks || !ssl_HaveSSL3HandshakeLock(ss));
88
89 if (ss->handshake == 0) {
90 /* Previous handshake finished. Switch to next one */
91 ss->handshake = ss->nextHandshake;
92 ss->nextHandshake = 0;
93 }
94 if (ss->handshake == 0) {
95 /* Previous handshake finished. Switch to security handshake */
96 ss->handshake = ss->securityHandshake;
97 ss->securityHandshake = 0;
98 }
99 if (ss->handshake == 0) {
100 /* for v3 this is done in ssl3_FinishHandshake */
101 if (!ss->firstHsDone && ss->version < SSL_LIBRARY_VERSION_3_0) {
102 ssl_GetRecvBufLock(ss);
103 ss->gs.recordLen = 0;
104 ssl_FinishHandshake(ss);
105 ssl_ReleaseRecvBufLock(ss);
106 }
107 break;
108 }
109 rv = (*ss->handshake)(ss);
110 ++loopCount;
111 /* This code must continue to loop on SECWouldBlock,
112 * or any positive value. See XXX_1 comments.
113 */
114 } while (rv != SECFailure); /* was (rv >= 0); XXX_1 */
115
116 PORT_Assert(ss->opt.noLocks || !ssl_HaveRecvBufLock(ss));
117 PORT_Assert(ss->opt.noLocks || !ssl_HaveXmitBufLock(ss));
118 PORT_Assert(ss->opt.noLocks || !ssl_HaveSSL3HandshakeLock(ss));
119
120 if (rv == SECWouldBlock) {
121 PORT_SetError(PR_WOULD_BLOCK_ERROR);
122 rv = SECFailure;
123 }
124 return rv;
125 }
126
127 void
128 ssl_FinishHandshake(sslSocket *ss)
129 {
130 PORT_Assert( ss->opt.noLocks || ssl_Have1stHandshakeLock(ss) );
131 PORT_Assert( ss->opt.noLocks || ssl_HaveRecvBufLock(ss) );
132
133 SSL_TRC(3, ("%d: SSL[%d]: handshake is completed", SSL_GETPID(), ss->fd));
134
135 ss->firstHsDone = PR_TRUE;
136 ss->enoughFirstHsDone = PR_TRUE;
137 ss->gs.writeOffset = 0;
138 ss->gs.readOffset = 0;
139
140 if (ss->handshakeCallback) {
141 (ss->handshakeCallback)(ss->fd, ss->handshakeCallbackData);
142 }
143 }
144
145 /*
146 * Handshake function that blocks. Used to force a
147 * retry on a connection on the next read/write.
148 */
149 static SECStatus
150 ssl3_AlwaysBlock(sslSocket *ss)
151 {
152 PORT_SetError(PR_WOULD_BLOCK_ERROR); /* perhaps redundant. */
153 return SECWouldBlock;
154 }
155
156 /*
157 * set the initial handshake state machine to block
158 */
159 void
160 ssl3_SetAlwaysBlock(sslSocket *ss)
161 {
162 if (!ss->firstHsDone) {
163 ss->handshake = ssl3_AlwaysBlock;
164 ss->nextHandshake = 0;
165 }
166 }
167
168 static SECStatus
169 ssl_SetTimeout(PRFileDesc *fd, PRIntervalTime timeout)
170 {
171 sslSocket *ss;
172
173 ss = ssl_FindSocket(fd);
174 if (!ss) {
175 SSL_DBG(("%d: SSL[%d]: bad socket in SetTimeout", SSL_GETPID(), fd));
176 return SECFailure;
177 }
178 SSL_LOCK_READER(ss);
179 ss->rTimeout = timeout;
180 if (ss->opt.fdx) {
181 SSL_LOCK_WRITER(ss);
182 }
183 ss->wTimeout = timeout;
184 if (ss->opt.fdx) {
185 SSL_UNLOCK_WRITER(ss);
186 }
187 SSL_UNLOCK_READER(ss);
188 return SECSuccess;
189 }
190
191 /* Acquires and releases HandshakeLock.
192 */
193 SECStatus
194 SSL_ResetHandshake(PRFileDesc *s, PRBool asServer)
195 {
196 sslSocket *ss;
197 SECStatus status;
198 PRNetAddr addr;
199
200 ss = ssl_FindSocket(s);
201 if (!ss) {
202 SSL_DBG(("%d: SSL[%d]: bad socket in ResetHandshake", SSL_GETPID(), s));
203 return SECFailure;
204 }
205
206 /* Don't waste my time */
207 if (!ss->opt.useSecurity)
208 return SECSuccess;
209
210 SSL_LOCK_READER(ss);
211 SSL_LOCK_WRITER(ss);
212
213 /* Reset handshake state */
214 ssl_Get1stHandshakeLock(ss);
215
216 ss->firstHsDone = PR_FALSE;
217 ss->enoughFirstHsDone = PR_FALSE;
218 if ( asServer ) {
219 ss->handshake = ssl2_BeginServerHandshake;
220 ss->handshaking = sslHandshakingAsServer;
221 } else {
222 ss->handshake = ssl2_BeginClientHandshake;
223 ss->handshaking = sslHandshakingAsClient;
224 }
225 ss->nextHandshake = 0;
226 ss->securityHandshake = 0;
227
228 ssl_GetRecvBufLock(ss);
229 status = ssl_InitGather(&ss->gs);
230 ssl_ReleaseRecvBufLock(ss);
231
232 ssl_GetSSL3HandshakeLock(ss);
233 ss->ssl3.hs.canFalseStart = PR_FALSE;
234 ss->ssl3.hs.restartTarget = NULL;
235
236 /*
237 ** Blow away old security state and get a fresh setup.
238 */
239 ssl_GetXmitBufLock(ss);
240 ssl_ResetSecurityInfo(&ss->sec, PR_TRUE);
241 status = ssl_CreateSecurityInfo(ss);
242 ssl_ReleaseXmitBufLock(ss);
243
244 ssl_ReleaseSSL3HandshakeLock(ss);
245 ssl_Release1stHandshakeLock(ss);
246
247 if (!ss->TCPconnected)
248 ss->TCPconnected = (PR_SUCCESS == ssl_DefGetpeername(ss, &addr));
249
250 SSL_UNLOCK_WRITER(ss);
251 SSL_UNLOCK_READER(ss);
252
253 return status;
254 }
255
256 /* For SSLv2, does nothing but return an error.
257 ** For SSLv3, flushes SID cache entry (if requested),
258 ** and then starts new client hello or hello request.
259 ** Acquires and releases HandshakeLock.
260 */
261 SECStatus
262 SSL_ReHandshake(PRFileDesc *fd, PRBool flushCache)
263 {
264 sslSocket *ss;
265 SECStatus rv;
266
267 ss = ssl_FindSocket(fd);
268 if (!ss) {
269 SSL_DBG(("%d: SSL[%d]: bad socket in RedoHandshake", SSL_GETPID(), fd));
270 return SECFailure;
271 }
272
273 if (!ss->opt.useSecurity)
274 return SECSuccess;
275
276 ssl_Get1stHandshakeLock(ss);
277
278 /* SSL v2 protocol does not support subsequent handshakes. */
279 if (ss->version < SSL_LIBRARY_VERSION_3_0) {
280 PORT_SetError(SSL_ERROR_FEATURE_NOT_SUPPORTED_FOR_SSL2);
281 rv = SECFailure;
282 } else {
283 ssl_GetSSL3HandshakeLock(ss);
284 rv = ssl3_RedoHandshake(ss, flushCache); /* force full handshake. */
285 ssl_ReleaseSSL3HandshakeLock(ss);
286 }
287
288 ssl_Release1stHandshakeLock(ss);
289
290 return rv;
291 }
292
293 /*
294 ** Same as above, but with an I/O timeout.
295 */
296 SSL_IMPORT SECStatus SSL_ReHandshakeWithTimeout(PRFileDesc *fd,
297 PRBool flushCache,
298 PRIntervalTime timeout)
299 {
300 if (SECSuccess != ssl_SetTimeout(fd, timeout)) {
301 return SECFailure;
302 }
303 return SSL_ReHandshake(fd, flushCache);
304 }
305
306 SECStatus
307 SSL_RedoHandshake(PRFileDesc *fd)
308 {
309 return SSL_ReHandshake(fd, PR_TRUE);
310 }
311
312 /* Register an application callback to be called when SSL handshake completes.
313 ** Acquires and releases HandshakeLock.
314 */
315 SECStatus
316 SSL_HandshakeCallback(PRFileDesc *fd, SSLHandshakeCallback cb,
317 void *client_data)
318 {
319 sslSocket *ss;
320
321 ss = ssl_FindSocket(fd);
322 if (!ss) {
323 SSL_DBG(("%d: SSL[%d]: bad socket in HandshakeCallback",
324 SSL_GETPID(), fd));
325 return SECFailure;
326 }
327
328 if (!ss->opt.useSecurity) {
329 PORT_SetError(SEC_ERROR_INVALID_ARGS);
330 return SECFailure;
331 }
332
333 ssl_Get1stHandshakeLock(ss);
334 ssl_GetSSL3HandshakeLock(ss);
335
336 ss->handshakeCallback = cb;
337 ss->handshakeCallbackData = client_data;
338
339 ssl_ReleaseSSL3HandshakeLock(ss);
340 ssl_Release1stHandshakeLock(ss);
341
342 return SECSuccess;
343 }
344
345 /* Register an application callback to be called when false start may happen.
346 ** Acquires and releases HandshakeLock.
347 */
348 SECStatus
349 SSL_SetCanFalseStartCallback(PRFileDesc *fd, SSLCanFalseStartCallback cb,
350 void *arg)
351 {
352 sslSocket *ss;
353
354 ss = ssl_FindSocket(fd);
355 if (!ss) {
356 SSL_DBG(("%d: SSL[%d]: bad socket in SSL_SetCanFalseStartCallback",
357 SSL_GETPID(), fd));
358 return SECFailure;
359 }
360
361 if (!ss->opt.useSecurity) {
362 PORT_SetError(SEC_ERROR_INVALID_ARGS);
363 return SECFailure;
364 }
365
366 ssl_Get1stHandshakeLock(ss);
367 ssl_GetSSL3HandshakeLock(ss);
368
369 ss->canFalseStartCallback = cb;
370 ss->canFalseStartCallbackData = arg;
371
372 ssl_ReleaseSSL3HandshakeLock(ss);
373 ssl_Release1stHandshakeLock(ss);
374
375 return SECSuccess;
376 }
377
378 SECStatus
379 SSL_RecommendedCanFalseStart(PRFileDesc *fd, PRBool *canFalseStart)
380 {
381 sslSocket *ss;
382
383 *canFalseStart = PR_FALSE;
384 ss = ssl_FindSocket(fd);
385 if (!ss) {
386 SSL_DBG(("%d: SSL[%d]: bad socket in SSL_RecommendedCanFalseStart",
387 SSL_GETPID(), fd));
388 return SECFailure;
389 }
390
391 if (!ss->ssl3.initialized) {
392 PORT_SetError(SEC_ERROR_INVALID_ARGS);
393 return SECFailure;
394 }
395
396 if (ss->version < SSL_LIBRARY_VERSION_3_0) {
397 PORT_SetError(SSL_ERROR_FEATURE_NOT_SUPPORTED_FOR_SSL2);
398 return SECFailure;
399 }
400
401 /* Require a forward-secret key exchange. */
402 *canFalseStart = ss->ssl3.hs.kea_def->kea == kea_dhe_dss ||
403 ss->ssl3.hs.kea_def->kea == kea_dhe_rsa ||
404 ss->ssl3.hs.kea_def->kea == kea_ecdhe_ecdsa ||
405 ss->ssl3.hs.kea_def->kea == kea_ecdhe_rsa;
406
407 return SECSuccess;
408 }
409
410 /* Try to make progress on an SSL handshake by attempting to read the
411 ** next handshake from the peer, and sending any responses.
412 ** For non-blocking sockets, returns PR_ERROR_WOULD_BLOCK if it cannot
413 ** read the next handshake from the underlying socket.
414 ** For SSLv2, returns when handshake is complete or fatal error occurs.
415 ** For SSLv3, returns when handshake is complete, or application data has
416 ** arrived that must be taken by application before handshake can continue,
417 ** or a fatal error occurs.
418 ** Application should use handshake completion callback to tell which.
419 */
420 SECStatus
421 SSL_ForceHandshake(PRFileDesc *fd)
422 {
423 sslSocket *ss;
424 SECStatus rv = SECFailure;
425
426 ss = ssl_FindSocket(fd);
427 if (!ss) {
428 SSL_DBG(("%d: SSL[%d]: bad socket in ForceHandshake",
429 SSL_GETPID(), fd));
430 return rv;
431 }
432
433 /* Don't waste my time */
434 if (!ss->opt.useSecurity)
435 return SECSuccess;
436
437 if (!ssl_SocketIsBlocking(ss)) {
438 ssl_GetXmitBufLock(ss);
439 if (ss->pendingBuf.len != 0) {
440 int sent = ssl_SendSavedWriteData(ss);
441 if ((sent < 0) && (PORT_GetError() != PR_WOULD_BLOCK_ERROR)) {
442 ssl_ReleaseXmitBufLock(ss);
443 return SECFailure;
444 }
445 }
446 ssl_ReleaseXmitBufLock(ss);
447 }
448
449 ssl_Get1stHandshakeLock(ss);
450
451 if (ss->version >= SSL_LIBRARY_VERSION_3_0) {
452 int gatherResult;
453
454 ssl_GetRecvBufLock(ss);
455 gatherResult = ssl3_GatherCompleteHandshake(ss, 0);
456 ssl_ReleaseRecvBufLock(ss);
457 if (gatherResult > 0) {
458 rv = SECSuccess;
459 } else if (gatherResult == 0) {
460 PORT_SetError(PR_END_OF_FILE_ERROR);
461 } else if (gatherResult == SECWouldBlock) {
462 PORT_SetError(PR_WOULD_BLOCK_ERROR);
463 }
464 } else if (!ss->firstHsDone) {
465 rv = ssl_Do1stHandshake(ss);
466 } else {
467 /* tried to force handshake on an SSL 2 socket that has
468 ** already completed the handshake. */
469 rv = SECSuccess; /* just pretend we did it. */
470 }
471
472 ssl_Release1stHandshakeLock(ss);
473
474 return rv;
475 }
476
477 /*
478 ** Same as above, but with an I/O timeout.
479 */
480 SSL_IMPORT SECStatus SSL_ForceHandshakeWithTimeout(PRFileDesc *fd,
481 PRIntervalTime timeout)
482 {
483 if (SECSuccess != ssl_SetTimeout(fd, timeout)) {
484 return SECFailure;
485 }
486 return SSL_ForceHandshake(fd);
487 }
488
489
490 /************************************************************************/
491
492 /*
493 ** Grow a buffer to hold newLen bytes of data.
494 ** Called for both recv buffers and xmit buffers.
495 ** Caller must hold xmitBufLock or recvBufLock, as appropriate.
496 */
497 SECStatus
498 sslBuffer_Grow(sslBuffer *b, unsigned int newLen)
499 {
500 newLen = PR_MAX(newLen, MAX_FRAGMENT_LENGTH + 2048);
501 if (newLen > b->space) {
502 unsigned char *newBuf;
503 if (b->buf) {
504 newBuf = (unsigned char *) PORT_Realloc(b->buf, newLen);
505 } else {
506 newBuf = (unsigned char *) PORT_Alloc(newLen);
507 }
508 if (!newBuf) {
509 return SECFailure;
510 }
511 SSL_TRC(10, ("%d: SSL: grow buffer from %d to %d",
512 SSL_GETPID(), b->space, newLen));
513 b->buf = newBuf;
514 b->space = newLen;
515 }
516 return SECSuccess;
517 }
518
519 SECStatus
520 sslBuffer_Append(sslBuffer *b, const void * data, unsigned int len)
521 {
522 unsigned int newLen = b->len + len;
523 SECStatus rv;
524
525 rv = sslBuffer_Grow(b, newLen);
526 if (rv != SECSuccess)
527 return rv;
528 PORT_Memcpy(b->buf + b->len, data, len);
529 b->len += len;
530 return SECSuccess;
531 }
532
533 /*
534 ** Save away write data that is trying to be written before the security
535 ** handshake has been completed. When the handshake is completed, we will
536 ** flush this data out.
537 ** Caller must hold xmitBufLock
538 */
539 SECStatus
540 ssl_SaveWriteData(sslSocket *ss, const void *data, unsigned int len)
541 {
542 SECStatus rv;
543
544 PORT_Assert( ss->opt.noLocks || ssl_HaveXmitBufLock(ss) );
545 rv = sslBuffer_Append(&ss->pendingBuf, data, len);
546 SSL_TRC(5, ("%d: SSL[%d]: saving %u bytes of data (%u total saved so far)",
547 SSL_GETPID(), ss->fd, len, ss->pendingBuf.len));
548 return rv;
549 }
550
551 /*
552 ** Send saved write data. This will flush out data sent prior to a
553 ** complete security handshake. Hopefully there won't be too much of it.
554 ** Returns count of the bytes sent, NOT a SECStatus.
555 ** Caller must hold xmitBufLock
556 */
557 int
558 ssl_SendSavedWriteData(sslSocket *ss)
559 {
560 int rv = 0;
561
562 PORT_Assert( ss->opt.noLocks || ssl_HaveXmitBufLock(ss) );
563 if (ss->pendingBuf.len != 0) {
564 SSL_TRC(5, ("%d: SSL[%d]: sending %d bytes of saved data",
565 SSL_GETPID(), ss->fd, ss->pendingBuf.len));
566 rv = ssl_DefSend(ss, ss->pendingBuf.buf, ss->pendingBuf.len, 0);
567 if (rv < 0) {
568 return rv;
569 }
570 ss->pendingBuf.len -= rv;
571 if (ss->pendingBuf.len > 0 && rv > 0) {
572 /* UGH !! This shifts the whole buffer down by copying it */
573 PORT_Memmove(ss->pendingBuf.buf, ss->pendingBuf.buf + rv,
574 ss->pendingBuf.len);
575 }
576 }
577 return rv;
578 }
579
580 /************************************************************************/
581
582 /*
583 ** Receive some application data on a socket. Reads SSL records from the input
584 ** stream, decrypts them and then copies them to the output buffer.
585 ** Called from ssl_SecureRecv() below.
586 **
587 ** Caller does NOT hold 1stHandshakeLock because that handshake is over.
588 ** Caller doesn't call this until initial handshake is complete.
589 ** For SSLv2, there is no subsequent handshake.
590 ** For SSLv3, the call to ssl3_GatherAppDataRecord may encounter handshake
591 ** messages from a subsequent handshake.
592 **
593 ** This code is similar to, and easily confused with,
594 ** ssl_GatherRecord1stHandshake() in sslcon.c
595 */
596 static int
597 DoRecv(sslSocket *ss, unsigned char *out, int len, int flags)
598 {
599 int rv;
600 int amount;
601 int available;
602
603 /* ssl3_GatherAppDataRecord may call ssl_FinishHandshake, which needs the
604 * 1stHandshakeLock. */
605 ssl_Get1stHandshakeLock(ss);
606 ssl_GetRecvBufLock(ss);
607
608 available = ss->gs.writeOffset - ss->gs.readOffset;
609 if (available == 0) {
610 /* Get some more data */
611 if (ss->version >= SSL_LIBRARY_VERSION_3_0) {
612 /* Wait for application data to arrive. */
613 rv = ssl3_GatherAppDataRecord(ss, 0);
614 } else {
615 /* See if we have a complete record */
616 rv = ssl2_GatherRecord(ss, 0);
617 }
618 if (rv <= 0) {
619 if (rv == 0) {
620 /* EOF */
621 SSL_TRC(10, ("%d: SSL[%d]: ssl_recv EOF",
622 SSL_GETPID(), ss->fd));
623 goto done;
624 }
625 if ((rv != SECWouldBlock) &&
626 (PR_GetError() != PR_WOULD_BLOCK_ERROR)) {
627 /* Some random error */
628 goto done;
629 }
630
631 /*
632 ** Gather record is blocked waiting for more record data to
633 ** arrive. Try to process what we have already received
634 */
635 } else {
636 /* Gather record has finished getting a complete record */
637 }
638
639 /* See if any clear data is now available */
640 available = ss->gs.writeOffset - ss->gs.readOffset;
641 if (available == 0) {
642 /*
643 ** No partial data is available. Force error code to
644 ** EWOULDBLOCK so that caller will try again later. Note
645 ** that the error code is probably EWOULDBLOCK already,
646 ** but if it isn't (for example, if we received a zero
647 ** length record) then this will force it to be correct.
648 */
649 PORT_SetError(PR_WOULD_BLOCK_ERROR);
650 rv = SECFailure;
651 goto done;
652 }
653 SSL_TRC(30, ("%d: SSL[%d]: partial data ready, available=%d",
654 SSL_GETPID(), ss->fd, available));
655 }
656
657 /* Dole out clear data to reader */
658 amount = PR_MIN(len, available);
659 PORT_Memcpy(out, ss->gs.buf.buf + ss->gs.readOffset, amount);
660 if (!(flags & PR_MSG_PEEK)) {
661 ss->gs.readOffset += amount;
662 }
663 PORT_Assert(ss->gs.readOffset <= ss->gs.writeOffset);
664 rv = amount;
665
666 SSL_TRC(30, ("%d: SSL[%d]: amount=%d available=%d",
667 SSL_GETPID(), ss->fd, amount, available));
668 PRINT_BUF(4, (ss, "DoRecv receiving plaintext:", out, amount));
669
670 done:
671 ssl_ReleaseRecvBufLock(ss);
672 ssl_Release1stHandshakeLock(ss);
673 return rv;
674 }
675
676 /************************************************************************/
677
678 /*
679 ** Return SSLKEAType derived from cert's Public Key algorithm info.
680 */
681 SSLKEAType
682 NSS_FindCertKEAType(CERTCertificate * cert)
683 {
684 SSLKEAType keaType = kt_null;
685 int tag;
686
687 if (!cert) goto loser;
688
689 tag = SECOID_GetAlgorithmTag(&(cert->subjectPublicKeyInfo.algorithm));
690
691 switch (tag) {
692 case SEC_OID_X500_RSA_ENCRYPTION:
693 case SEC_OID_PKCS1_RSA_ENCRYPTION:
694 keaType = kt_rsa;
695 break;
696 case SEC_OID_X942_DIFFIE_HELMAN_KEY:
697 keaType = kt_dh;
698 break;
699 #ifndef NSS_DISABLE_ECC
700 case SEC_OID_ANSIX962_EC_PUBLIC_KEY:
701 keaType = kt_ecdh;
702 break;
703 #endif /* NSS_DISABLE_ECC */
704 default:
705 keaType = kt_null;
706 }
707
708 loser:
709
710 return keaType;
711 }
712
713 static const PRCallOnceType pristineCallOnce;
714 static PRCallOnceType setupServerCAListOnce;
715
716 static SECStatus serverCAListShutdown(void* appData, void* nssData)
717 {
718 PORT_Assert(ssl3_server_ca_list);
719 if (ssl3_server_ca_list) {
720 CERT_FreeDistNames(ssl3_server_ca_list);
721 ssl3_server_ca_list = NULL;
722 }
723 setupServerCAListOnce = pristineCallOnce;
724 return SECSuccess;
725 }
726
727 static PRStatus serverCAListSetup(void *arg)
728 {
729 CERTCertDBHandle *dbHandle = (CERTCertDBHandle *)arg;
730 SECStatus rv = NSS_RegisterShutdown(serverCAListShutdown, NULL);
731 PORT_Assert(SECSuccess == rv);
732 if (SECSuccess == rv) {
733 ssl3_server_ca_list = CERT_GetSSLCACerts(dbHandle);
734 return PR_SUCCESS;
735 }
736 return PR_FAILURE;
737 }
738
739 SECStatus
740 ssl_ConfigSecureServer(sslSocket *ss, CERTCertificate *cert,
741 const CERTCertificateList *certChain,
742 ssl3KeyPair *keyPair, SSLKEAType kea)
743 {
744 CERTCertificateList *localCertChain = NULL;
745 sslServerCerts *sc = ss->serverCerts + kea;
746
747 /* load the server certificate */
748 if (sc->serverCert != NULL) {
749 CERT_DestroyCertificate(sc->serverCert);
750 sc->serverCert = NULL;
751 sc->serverKeyBits = 0;
752 }
753 /* load the server cert chain */
754 if (sc->serverCertChain != NULL) {
755 CERT_DestroyCertificateList(sc->serverCertChain);
756 sc->serverCertChain = NULL;
757 }
758 if (cert) {
759 sc->serverCert = CERT_DupCertificate(cert);
760 /* get the size of the cert's public key, and remember it */
761 sc->serverKeyBits = SECKEY_PublicKeyStrengthInBits(keyPair->pubKey);
762 if (!certChain) {
763 localCertChain =
764 CERT_CertChainFromCert(sc->serverCert, certUsageSSLServer,
765 PR_TRUE);
766 if (!localCertChain)
767 goto loser;
768 }
769 sc->serverCertChain = (certChain) ? CERT_DupCertList(certChain) :
770 localCertChain;
771 if (!sc->serverCertChain) {
772 goto loser;
773 }
774 localCertChain = NULL; /* consumed */
775 }
776
777 /* get keyPair */
778 if (sc->serverKeyPair != NULL) {
779 ssl3_FreeKeyPair(sc->serverKeyPair);
780 sc->serverKeyPair = NULL;
781 }
782 if (keyPair) {
783 SECKEY_CacheStaticFlags(keyPair->privKey);
784 sc->serverKeyPair = ssl3_GetKeyPairRef(keyPair);
785 }
786 if (kea == kt_rsa && cert && sc->serverKeyBits > 512 &&
787 !ss->opt.noStepDown && !ss->stepDownKeyPair) {
788 if (ssl3_CreateRSAStepDownKeys(ss) != SECSuccess) {
789 goto loser;
790 }
791 }
792 return SECSuccess;
793
794 loser:
795 if (localCertChain) {
796 CERT_DestroyCertificateList(localCertChain);
797 }
798 if (sc->serverCert != NULL) {
799 CERT_DestroyCertificate(sc->serverCert);
800 sc->serverCert = NULL;
801 }
802 if (sc->serverCertChain != NULL) {
803 CERT_DestroyCertificateList(sc->serverCertChain);
804 sc->serverCertChain = NULL;
805 }
806 if (sc->serverKeyPair != NULL) {
807 ssl3_FreeKeyPair(sc->serverKeyPair);
808 sc->serverKeyPair = NULL;
809 }
810 return SECFailure;
811 }
812
813 /* XXX need to protect the data that gets changed here.!! */
814
815 SECStatus
816 SSL_ConfigSecureServer(PRFileDesc *fd, CERTCertificate *cert,
817 SECKEYPrivateKey *key, SSL3KEAType kea)
818 {
819
820 return SSL_ConfigSecureServerWithCertChain(fd, cert, NULL, key, kea);
821 }
822
823 SECStatus
824 SSL_ConfigSecureServerWithCertChain(PRFileDesc *fd, CERTCertificate *cert,
825 const CERTCertificateList *certChainOpt,
826 SECKEYPrivateKey *key, SSL3KEAType kea)
827 {
828 sslSocket *ss;
829 SECKEYPublicKey *pubKey = NULL;
830 ssl3KeyPair *keyPair = NULL;
831 SECStatus rv = SECFailure;
832
833 ss = ssl_FindSocket(fd);
834 if (!ss) {
835 return SECFailure;
836 }
837
838 /* Both key and cert must have a value or be NULL */
839 /* Passing a value of NULL will turn off key exchange algorithms that were
840 * previously turned on */
841 if (!cert != !key) {
842 PORT_SetError(SEC_ERROR_INVALID_ARGS);
843 return SECFailure;
844 }
845
846 /* make sure the key exchange is recognized */
847 if ((kea >= kt_kea_size) || (kea < kt_null)) {
848 PORT_SetError(SEC_ERROR_UNSUPPORTED_KEYALG);
849 return SECFailure;
850 }
851
852 if (kea != NSS_FindCertKEAType(cert)) {
853 PORT_SetError(SSL_ERROR_CERT_KEA_MISMATCH);
854 return SECFailure;
855 }
856
857 if (cert) {
858 /* get the size of the cert's public key, and remember it */
859 pubKey = CERT_ExtractPublicKey(cert);
860 if (!pubKey)
861 return SECFailure;
862 }
863
864 if (key) {
865 SECKEYPrivateKey * keyCopy = NULL;
866 CK_MECHANISM_TYPE keyMech = CKM_INVALID_MECHANISM;
867
868 if (key->pkcs11Slot) {
869 PK11SlotInfo * bestSlot;
870 bestSlot = PK11_ReferenceSlot(key->pkcs11Slot);
871 if (bestSlot) {
872 keyCopy = PK11_CopyTokenPrivKeyToSessionPrivKey(bestSlot, key);
873 PK11_FreeSlot(bestSlot);
874 }
875 }
876 if (keyCopy == NULL)
877 keyMech = PK11_MapSignKeyType(key->keyType);
878 if (keyMech != CKM_INVALID_MECHANISM) {
879 PK11SlotInfo * bestSlot;
880 /* XXX Maybe should be bestSlotMultiple? */
881 bestSlot = PK11_GetBestSlot(keyMech, NULL /* wincx */);
882 if (bestSlot) {
883 keyCopy = PK11_CopyTokenPrivKeyToSessionPrivKey(bestSlot, key);
884 PK11_FreeSlot(bestSlot);
885 }
886 }
887 if (keyCopy == NULL)
888 keyCopy = SECKEY_CopyPrivateKey(key);
889 if (keyCopy == NULL)
890 goto loser;
891 keyPair = ssl3_NewKeyPair(keyCopy, pubKey);
892 if (keyPair == NULL) {
893 SECKEY_DestroyPrivateKey(keyCopy);
894 goto loser;
895 }
896 pubKey = NULL; /* adopted by serverKeyPair */
897 }
898 if (ssl_ConfigSecureServer(ss, cert, certChainOpt,
899 keyPair, kea) == SECFailure) {
900 goto loser;
901 }
902
903 /* Only do this once because it's global. */
904 if (PR_SUCCESS == PR_CallOnceWithArg(&setupServerCAListOnce,
905 &serverCAListSetup,
906 (void *)(ss->dbHandle))) {
907 rv = SECSuccess;
908 }
909
910 loser:
911 if (keyPair) {
912 ssl3_FreeKeyPair(keyPair);
913 }
914 if (pubKey) {
915 SECKEY_DestroyPublicKey(pubKey);
916 pubKey = NULL;
917 }
918 return rv;
919 }
920
921 /************************************************************************/
922
923 SECStatus
924 ssl_CreateSecurityInfo(sslSocket *ss)
925 {
926 SECStatus status;
927
928 /* initialize sslv2 socket to send data in the clear. */
929 ssl2_UseClearSendFunc(ss);
930
931 ss->sec.blockSize = 1;
932 ss->sec.blockShift = 0;
933
934 ssl_GetXmitBufLock(ss);
935 status = sslBuffer_Grow(&ss->sec.writeBuf, 4096);
936 ssl_ReleaseXmitBufLock(ss);
937
938 return status;
939 }
940
941 SECStatus
942 ssl_CopySecurityInfo(sslSocket *ss, sslSocket *os)
943 {
944 ss->sec.send = os->sec.send;
945 ss->sec.isServer = os->sec.isServer;
946 ss->sec.keyBits = os->sec.keyBits;
947 ss->sec.secretKeyBits = os->sec.secretKeyBits;
948
949 ss->sec.peerCert = CERT_DupCertificate(os->sec.peerCert);
950 if (os->sec.peerCert && !ss->sec.peerCert)
951 goto loser;
952
953 ss->sec.cache = os->sec.cache;
954 ss->sec.uncache = os->sec.uncache;
955
956 /* we don't dup the connection info. */
957
958 ss->sec.sendSequence = os->sec.sendSequence;
959 ss->sec.rcvSequence = os->sec.rcvSequence;
960
961 if (os->sec.hash && os->sec.hashcx) {
962 ss->sec.hash = os->sec.hash;
963 ss->sec.hashcx = os->sec.hash->clone(os->sec.hashcx);
964 if (os->sec.hashcx && !ss->sec.hashcx)
965 goto loser;
966 } else {
967 ss->sec.hash = NULL;
968 ss->sec.hashcx = NULL;
969 }
970
971 SECITEM_CopyItem(0, &ss->sec.sendSecret, &os->sec.sendSecret);
972 if (os->sec.sendSecret.data && !ss->sec.sendSecret.data)
973 goto loser;
974 SECITEM_CopyItem(0, &ss->sec.rcvSecret, &os->sec.rcvSecret);
975 if (os->sec.rcvSecret.data && !ss->sec.rcvSecret.data)
976 goto loser;
977
978 /* XXX following code is wrong if either cx != 0 */
979 PORT_Assert(os->sec.readcx == 0);
980 PORT_Assert(os->sec.writecx == 0);
981 ss->sec.readcx = os->sec.readcx;
982 ss->sec.writecx = os->sec.writecx;
983 ss->sec.destroy = 0;
984
985 ss->sec.enc = os->sec.enc;
986 ss->sec.dec = os->sec.dec;
987
988 ss->sec.blockShift = os->sec.blockShift;
989 ss->sec.blockSize = os->sec.blockSize;
990
991 return SECSuccess;
992
993 loser:
994 return SECFailure;
995 }
996
997 /* Reset sec back to its initial state.
998 ** Caller holds any relevant locks.
999 */
1000 void
1001 ssl_ResetSecurityInfo(sslSecurityInfo *sec, PRBool doMemset)
1002 {
1003 /* Destroy MAC */
1004 if (sec->hash && sec->hashcx) {
1005 (*sec->hash->destroy)(sec->hashcx, PR_TRUE);
1006 sec->hashcx = NULL;
1007 sec->hash = NULL;
1008 }
1009 SECITEM_ZfreeItem(&sec->sendSecret, PR_FALSE);
1010 SECITEM_ZfreeItem(&sec->rcvSecret, PR_FALSE);
1011
1012 /* Destroy ciphers */
1013 if (sec->destroy) {
1014 (*sec->destroy)(sec->readcx, PR_TRUE);
1015 (*sec->destroy)(sec->writecx, PR_TRUE);
1016 sec->readcx = NULL;
1017 sec->writecx = NULL;
1018 } else {
1019 PORT_Assert(sec->readcx == 0);
1020 PORT_Assert(sec->writecx == 0);
1021 }
1022 sec->readcx = 0;
1023 sec->writecx = 0;
1024
1025 if (sec->localCert) {
1026 CERT_DestroyCertificate(sec->localCert);
1027 sec->localCert = NULL;
1028 }
1029 if (sec->peerCert) {
1030 CERT_DestroyCertificate(sec->peerCert);
1031 sec->peerCert = NULL;
1032 }
1033 if (sec->peerKey) {
1034 SECKEY_DestroyPublicKey(sec->peerKey);
1035 sec->peerKey = NULL;
1036 }
1037
1038 /* cleanup the ci */
1039 if (sec->ci.sid != NULL) {
1040 ssl_FreeSID(sec->ci.sid);
1041 }
1042 PORT_ZFree(sec->ci.sendBuf.buf, sec->ci.sendBuf.space);
1043 if (doMemset) {
1044 memset(&sec->ci, 0, sizeof sec->ci);
1045 }
1046
1047 }
1048
1049 /*
1050 ** Called from SSL_ResetHandshake (above), and
1051 ** from ssl_FreeSocket in sslsock.c
1052 ** Caller should hold relevant locks (e.g. XmitBufLock)
1053 */
1054 void
1055 ssl_DestroySecurityInfo(sslSecurityInfo *sec)
1056 {
1057 ssl_ResetSecurityInfo(sec, PR_FALSE);
1058
1059 PORT_ZFree(sec->writeBuf.buf, sec->writeBuf.space);
1060 sec->writeBuf.buf = 0;
1061
1062 memset(sec, 0, sizeof *sec);
1063 }
1064
1065 /************************************************************************/
1066
1067 int
1068 ssl_SecureConnect(sslSocket *ss, const PRNetAddr *sa)
1069 {
1070 PRFileDesc *osfd = ss->fd->lower;
1071 int rv;
1072
1073 if ( ss->opt.handshakeAsServer ) {
1074 ss->securityHandshake = ssl2_BeginServerHandshake;
1075 ss->handshaking = sslHandshakingAsServer;
1076 } else {
1077 ss->securityHandshake = ssl2_BeginClientHandshake;
1078 ss->handshaking = sslHandshakingAsClient;
1079 }
1080
1081 /* connect to server */
1082 rv = osfd->methods->connect(osfd, sa, ss->cTimeout);
1083 if (rv == PR_SUCCESS) {
1084 ss->TCPconnected = 1;
1085 } else {
1086 int err = PR_GetError();
1087 SSL_DBG(("%d: SSL[%d]: connect failed, errno=%d",
1088 SSL_GETPID(), ss->fd, err));
1089 if (err == PR_IS_CONNECTED_ERROR) {
1090 ss->TCPconnected = 1;
1091 }
1092 }
1093
1094 SSL_TRC(5, ("%d: SSL[%d]: secure connect completed, rv == %d",
1095 SSL_GETPID(), ss->fd, rv));
1096 return rv;
1097 }
1098
1099 /*
1100 * The TLS 1.2 RFC 5246, Section 7.2.1 says:
1101 *
1102 * Unless some other fatal alert has been transmitted, each party is
1103 * required to send a close_notify alert before closing the write side
1104 * of the connection. The other party MUST respond with a close_notify
1105 * alert of its own and close down the connection immediately,
1106 * discarding any pending writes. It is not required for the initiator
1107 * of the close to wait for the responding close_notify alert before
1108 * closing the read side of the connection.
1109 *
1110 * The second sentence requires that we send a close_notify alert when we
1111 * have received a close_notify alert. In practice, all SSL implementations
1112 * close the socket immediately after sending a close_notify alert (which is
1113 * allowed by the third sentence), so responding with a close_notify alert
1114 * would result in a write failure with the ECONNRESET error. This is why
1115 * we don't respond with a close_notify alert.
1116 *
1117 * Also, in the unlikely event that the TCP pipe is full and the peer stops
1118 * reading, the SSL3_SendAlert call in ssl_SecureClose and ssl_SecureShutdown
1119 * may block indefinitely in blocking mode, and may fail (without retrying)
1120 * in non-blocking mode.
1121 */
1122
1123 int
1124 ssl_SecureClose(sslSocket *ss)
1125 {
1126 int rv;
1127
1128 if (ss->version >= SSL_LIBRARY_VERSION_3_0 &&
1129 !(ss->shutdownHow & ssl_SHUTDOWN_SEND) &&
1130 ss->firstHsDone &&
1131 !ss->recvdCloseNotify &&
1132 ss->ssl3.initialized) {
1133
1134 /* We don't want the final alert to be Nagle delayed. */
1135 if (!ss->delayDisabled) {
1136 ssl_EnableNagleDelay(ss, PR_FALSE);
1137 ss->delayDisabled = 1;
1138 }
1139
1140 (void) SSL3_SendAlert(ss, alert_warning, close_notify);
1141 }
1142 rv = ssl_DefClose(ss);
1143 return rv;
1144 }
1145
1146 /* Caller handles all locking */
1147 int
1148 ssl_SecureShutdown(sslSocket *ss, int nsprHow)
1149 {
1150 PRFileDesc *osfd = ss->fd->lower;
1151 int rv;
1152 PRIntn sslHow = nsprHow + 1;
1153
1154 if ((unsigned)nsprHow > PR_SHUTDOWN_BOTH) {
1155 PORT_SetError(PR_INVALID_ARGUMENT_ERROR);
1156 return PR_FAILURE;
1157 }
1158
1159 if ((sslHow & ssl_SHUTDOWN_SEND) != 0 &&
1160 ss->version >= SSL_LIBRARY_VERSION_3_0 &&
1161 !(ss->shutdownHow & ssl_SHUTDOWN_SEND) &&
1162 ss->firstHsDone &&
1163 !ss->recvdCloseNotify &&
1164 ss->ssl3.initialized) {
1165
1166 (void) SSL3_SendAlert(ss, alert_warning, close_notify);
1167 }
1168
1169 rv = osfd->methods->shutdown(osfd, nsprHow);
1170
1171 ss->shutdownHow |= sslHow;
1172
1173 return rv;
1174 }
1175
1176 /************************************************************************/
1177
1178
1179 int
1180 ssl_SecureRecv(sslSocket *ss, unsigned char *buf, int len, int flags)
1181 {
1182 sslSecurityInfo *sec;
1183 int rv = 0;
1184
1185 sec = &ss->sec;
1186
1187 if (ss->shutdownHow & ssl_SHUTDOWN_RCV) {
1188 PORT_SetError(PR_SOCKET_SHUTDOWN_ERROR);
1189 return PR_FAILURE;
1190 }
1191 if (flags & ~PR_MSG_PEEK) {
1192 PORT_SetError(PR_INVALID_ARGUMENT_ERROR);
1193 return PR_FAILURE;
1194 }
1195
1196 if (!ssl_SocketIsBlocking(ss) && !ss->opt.fdx) {
1197 ssl_GetXmitBufLock(ss);
1198 if (ss->pendingBuf.len != 0) {
1199 rv = ssl_SendSavedWriteData(ss);
1200 if ((rv < 0) && (PORT_GetError() != PR_WOULD_BLOCK_ERROR)) {
1201 ssl_ReleaseXmitBufLock(ss);
1202 return SECFailure;
1203 }
1204 }
1205 ssl_ReleaseXmitBufLock(ss);
1206 }
1207
1208 rv = 0;
1209 /* If any of these is non-zero, the initial handshake is not done. */
1210 if (!ss->firstHsDone) {
1211 ssl_Get1stHandshakeLock(ss);
1212 if (ss->handshake || ss->nextHandshake || ss->securityHandshake) {
1213 rv = ssl_Do1stHandshake(ss);
1214 }
1215 ssl_Release1stHandshakeLock(ss);
1216 }
1217 if (rv < 0) {
1218 return rv;
1219 }
1220
1221 if (len == 0) return 0;
1222
1223 rv = DoRecv(ss, (unsigned char*) buf, len, flags);
1224 SSL_TRC(2, ("%d: SSL[%d]: recving %d bytes securely (errno=%d)",
1225 SSL_GETPID(), ss->fd, rv, PORT_GetError()));
1226 return rv;
1227 }
1228
1229 int
1230 ssl_SecureRead(sslSocket *ss, unsigned char *buf, int len)
1231 {
1232 return ssl_SecureRecv(ss, buf, len, 0);
1233 }
1234
1235 /* Caller holds the SSL Socket's write lock. SSL_LOCK_WRITER(ss) */
1236 int
1237 ssl_SecureSend(sslSocket *ss, const unsigned char *buf, int len, int flags)
1238 {
1239 int rv = 0;
1240
1241 SSL_TRC(2, ("%d: SSL[%d]: SecureSend: sending %d bytes",
1242 SSL_GETPID(), ss->fd, len));
1243
1244 if (ss->shutdownHow & ssl_SHUTDOWN_SEND) {
1245 PORT_SetError(PR_SOCKET_SHUTDOWN_ERROR);
1246 rv = PR_FAILURE;
1247 goto done;
1248 }
1249 if (flags) {
1250 PORT_SetError(PR_INVALID_ARGUMENT_ERROR);
1251 rv = PR_FAILURE;
1252 goto done;
1253 }
1254
1255 ssl_GetXmitBufLock(ss);
1256 if (ss->pendingBuf.len != 0) {
1257 PORT_Assert(ss->pendingBuf.len > 0);
1258 rv = ssl_SendSavedWriteData(ss);
1259 if (rv >= 0 && ss->pendingBuf.len != 0) {
1260 PORT_Assert(ss->pendingBuf.len > 0);
1261 PORT_SetError(PR_WOULD_BLOCK_ERROR);
1262 rv = SECFailure;
1263 }
1264 }
1265 ssl_ReleaseXmitBufLock(ss);
1266 if (rv < 0) {
1267 goto done;
1268 }
1269
1270 if (len > 0)
1271 ss->writerThread = PR_GetCurrentThread();
1272 /* If any of these is non-zero, the initial handshake is not done. */
1273 if (!ss->firstHsDone) {
1274 PRBool falseStart = PR_FALSE;
1275 ssl_Get1stHandshakeLock(ss);
1276 if (ss->opt.enableFalseStart &&
1277 ss->version >= SSL_LIBRARY_VERSION_3_0) {
1278 ssl_GetSSL3HandshakeLock(ss);
1279 falseStart = ss->ssl3.hs.canFalseStart;
1280 ssl_ReleaseSSL3HandshakeLock(ss);
1281 }
1282 if (!falseStart &&
1283 (ss->handshake || ss->nextHandshake || ss->securityHandshake)) {
1284 rv = ssl_Do1stHandshake(ss);
1285 }
1286 ssl_Release1stHandshakeLock(ss);
1287 }
1288 if (rv < 0) {
1289 ss->writerThread = NULL;
1290 goto done;
1291 }
1292
1293 /* Check for zero length writes after we do housekeeping so we make forward
1294 * progress.
1295 */
1296 if (len == 0) {
1297 rv = 0;
1298 goto done;
1299 }
1300 PORT_Assert(buf != NULL);
1301 if (!buf) {
1302 PORT_SetError(PR_INVALID_ARGUMENT_ERROR);
1303 rv = PR_FAILURE;
1304 goto done;
1305 }
1306
1307 if (!ss->firstHsDone) {
1308 PORT_Assert(ss->version >= SSL_LIBRARY_VERSION_3_0);
1309 #ifdef DEBUG
1310 ssl_GetSSL3HandshakeLock(ss);
1311 PORT_Assert(ss->ssl3.hs.canFalseStart);
1312 ssl_ReleaseSSL3HandshakeLock(ss);
1313 #endif
1314 SSL_TRC(3, ("%d: SSL[%d]: SecureSend: sending data due to false start",
1315 SSL_GETPID(), ss->fd));
1316 }
1317
1318 /* Send out the data using one of these functions:
1319 * ssl2_SendClear, ssl2_SendStream, ssl2_SendBlock,
1320 * ssl3_SendApplicationData
1321 */
1322 ssl_GetXmitBufLock(ss);
1323 rv = (*ss->sec.send)(ss, buf, len, flags);
1324 ssl_ReleaseXmitBufLock(ss);
1325 ss->writerThread = NULL;
1326 done:
1327 if (rv < 0) {
1328 SSL_TRC(2, ("%d: SSL[%d]: SecureSend: returning %d count, error %d",
1329 SSL_GETPID(), ss->fd, rv, PORT_GetError()));
1330 } else {
1331 SSL_TRC(2, ("%d: SSL[%d]: SecureSend: returning %d count",
1332 SSL_GETPID(), ss->fd, rv));
1333 }
1334 return rv;
1335 }
1336
1337 int
1338 ssl_SecureWrite(sslSocket *ss, const unsigned char *buf, int len)
1339 {
1340 return ssl_SecureSend(ss, buf, len, 0);
1341 }
1342
1343 SECStatus
1344 SSL_BadCertHook(PRFileDesc *fd, SSLBadCertHandler f, void *arg)
1345 {
1346 sslSocket *ss;
1347
1348 ss = ssl_FindSocket(fd);
1349 if (!ss) {
1350 SSL_DBG(("%d: SSL[%d]: bad socket in SSLBadCertHook",
1351 SSL_GETPID(), fd));
1352 return SECFailure;
1353 }
1354
1355 ss->handleBadCert = f;
1356 ss->badCertArg = arg;
1357
1358 return SECSuccess;
1359 }
1360
1361 /*
1362 * Allow the application to pass the url or hostname into the SSL library
1363 * so that we can do some checking on it. It will be used for the value in
1364 * SNI extension of client hello message.
1365 */
1366 SECStatus
1367 SSL_SetURL(PRFileDesc *fd, const char *url)
1368 {
1369 sslSocket * ss = ssl_FindSocket(fd);
1370 SECStatus rv = SECSuccess;
1371
1372 if (!ss) {
1373 SSL_DBG(("%d: SSL[%d]: bad socket in SSLSetURL",
1374 SSL_GETPID(), fd));
1375 return SECFailure;
1376 }
1377 ssl_Get1stHandshakeLock(ss);
1378 ssl_GetSSL3HandshakeLock(ss);
1379
1380 if ( ss->url ) {
1381 PORT_Free((void *)ss->url); /* CONST */
1382 }
1383
1384 ss->url = (const char *)PORT_Strdup(url);
1385 if ( ss->url == NULL ) {
1386 rv = SECFailure;
1387 }
1388
1389 ssl_ReleaseSSL3HandshakeLock(ss);
1390 ssl_Release1stHandshakeLock(ss);
1391
1392 return rv;
1393 }
1394
1395 /*
1396 * Allow the application to pass the set of trust anchors
1397 */
1398 SECStatus
1399 SSL_SetTrustAnchors(PRFileDesc *fd, CERTCertList *certList)
1400 {
1401 sslSocket * ss = ssl_FindSocket(fd);
1402 CERTDistNames *names = NULL;
1403
1404 if (!certList) {
1405 PORT_SetError(SEC_ERROR_INVALID_ARGS);
1406 return SECFailure;
1407 }
1408 if (!ss) {
1409 SSL_DBG(("%d: SSL[%d]: bad socket in SSL_SetTrustAnchors",
1410 SSL_GETPID(), fd));
1411 return SECFailure;
1412 }
1413
1414 names = CERT_DistNamesFromCertList(certList);
1415 if (names == NULL) {
1416 return SECFailure;
1417 }
1418 ssl_Get1stHandshakeLock(ss);
1419 ssl_GetSSL3HandshakeLock(ss);
1420 if (ss->ssl3.ca_list) {
1421 CERT_FreeDistNames(ss->ssl3.ca_list);
1422 }
1423 ss->ssl3.ca_list = names;
1424 ssl_ReleaseSSL3HandshakeLock(ss);
1425 ssl_Release1stHandshakeLock(ss);
1426
1427 return SECSuccess;
1428 }
1429
1430 /*
1431 ** Returns Negative number on error, zero or greater on success.
1432 ** Returns the amount of data immediately available to be read.
1433 */
1434 int
1435 SSL_DataPending(PRFileDesc *fd)
1436 {
1437 sslSocket *ss;
1438 int rv = 0;
1439
1440 ss = ssl_FindSocket(fd);
1441
1442 if (ss && ss->opt.useSecurity) {
1443 ssl_GetRecvBufLock(ss);
1444 rv = ss->gs.writeOffset - ss->gs.readOffset;
1445 ssl_ReleaseRecvBufLock(ss);
1446 }
1447
1448 return rv;
1449 }
1450
1451 SECStatus
1452 SSL_InvalidateSession(PRFileDesc *fd)
1453 {
1454 sslSocket * ss = ssl_FindSocket(fd);
1455 SECStatus rv = SECFailure;
1456
1457 if (ss) {
1458 ssl_Get1stHandshakeLock(ss);
1459 ssl_GetSSL3HandshakeLock(ss);
1460
1461 if (ss->sec.ci.sid && ss->sec.uncache) {
1462 ss->sec.uncache(ss->sec.ci.sid);
1463 rv = SECSuccess;
1464 }
1465
1466 ssl_ReleaseSSL3HandshakeLock(ss);
1467 ssl_Release1stHandshakeLock(ss);
1468 }
1469 return rv;
1470 }
1471
1472 SECItem *
1473 SSL_GetSessionID(PRFileDesc *fd)
1474 {
1475 sslSocket * ss;
1476 SECItem * item = NULL;
1477
1478 ss = ssl_FindSocket(fd);
1479 if (ss) {
1480 ssl_Get1stHandshakeLock(ss);
1481 ssl_GetSSL3HandshakeLock(ss);
1482
1483 if (ss->opt.useSecurity && ss->firstHsDone && ss->sec.ci.sid) {
1484 item = (SECItem *)PORT_Alloc(sizeof(SECItem));
1485 if (item) {
1486 sslSessionID * sid = ss->sec.ci.sid;
1487 if (sid->version < SSL_LIBRARY_VERSION_3_0) {
1488 item->len = SSL2_SESSIONID_BYTES;
1489 item->data = (unsigned char*)PORT_Alloc(item->len);
1490 PORT_Memcpy(item->data, sid->u.ssl2.sessionID, item->len);
1491 } else {
1492 item->len = sid->u.ssl3.sessionIDLength;
1493 item->data = (unsigned char*)PORT_Alloc(item->len);
1494 PORT_Memcpy(item->data, sid->u.ssl3.sessionID, item->len);
1495 }
1496 }
1497 }
1498
1499 ssl_ReleaseSSL3HandshakeLock(ss);
1500 ssl_Release1stHandshakeLock(ss);
1501 }
1502 return item;
1503 }
1504
1505 SECStatus
1506 SSL_CertDBHandleSet(PRFileDesc *fd, CERTCertDBHandle *dbHandle)
1507 {
1508 sslSocket * ss;
1509
1510 ss = ssl_FindSocket(fd);
1511 if (!ss)
1512 return SECFailure;
1513 if (!dbHandle) {
1514 PORT_SetError(SEC_ERROR_INVALID_ARGS);
1515 return SECFailure;
1516 }
1517 ss->dbHandle = dbHandle;
1518 return SECSuccess;
1519 }
1520
1521 /* DO NOT USE. This function was exported in ssl.def with the wrong signature;
1522 * this implementation exists to maintain link-time compatibility.
1523 */
1524 int
1525 SSL_RestartHandshakeAfterCertReq(sslSocket * ss,
1526 CERTCertificate * cert,
1527 SECKEYPrivateKey * key,
1528 CERTCertificateList *certChain)
1529 {
1530 PORT_SetError(PR_NOT_IMPLEMENTED_ERROR);
1531 return -1;
1532 }
1533
1534 /* DO NOT USE. This function was exported in ssl.def with the wrong signature;
1535 * this implementation exists to maintain link-time compatibility.
1536 */
1537 int
1538 SSL_RestartHandshakeAfterServerCert(sslSocket * ss)
1539 {
1540 PORT_SetError(PR_NOT_IMPLEMENTED_ERROR);
1541 return -1;
1542 }
1543
1544 /* See documentation in ssl.h */
1545 SECStatus
1546 SSL_AuthCertificateComplete(PRFileDesc *fd, PRErrorCode error)
1547 {
1548 SECStatus rv;
1549 sslSocket *ss = ssl_FindSocket(fd);
1550
1551 if (!ss) {
1552 SSL_DBG(("%d: SSL[%d]: bad socket in SSL_AuthCertificateComplete",
1553 SSL_GETPID(), fd));
1554 return SECFailure;
1555 }
1556
1557 ssl_Get1stHandshakeLock(ss);
1558
1559 if (!ss->ssl3.initialized) {
1560 PORT_SetError(SEC_ERROR_INVALID_ARGS);
1561 rv = SECFailure;
1562 } else if (ss->version < SSL_LIBRARY_VERSION_3_0) {
1563 PORT_SetError(SSL_ERROR_FEATURE_NOT_SUPPORTED_FOR_SSL2);
1564 rv = SECFailure;
1565 } else {
1566 rv = ssl3_AuthCertificateComplete(ss, error);
1567 }
1568
1569 ssl_Release1stHandshakeLock(ss);
1570
1571 return rv;
1572 }
1573
1574 /* For more info see ssl.h */
1575 SECStatus
1576 SSL_SNISocketConfigHook(PRFileDesc *fd, SSLSNISocketConfig func,
1577 void *arg)
1578 {
1579 sslSocket *ss;
1580
1581 ss = ssl_FindSocket(fd);
1582 if (!ss) {
1583 SSL_DBG(("%d: SSL[%d]: bad socket in SNISocketConfigHook",
1584 SSL_GETPID(), fd));
1585 return SECFailure;
1586 }
1587
1588 ss->sniSocketConfig = func;
1589 ss->sniSocketConfigArg = arg;
1590 return SECSuccess;
1591 }

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