2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
62 #include <openssl/evp.h>
63 #include <openssl/buffer.h>
66 static int do_ssl3_write(SSL *s, int type, const unsigned char *buf,
68 static int ssl3_write_pending(SSL *s, int type, const unsigned char *buf,
70 static int ssl3_get_record(SSL *s);
71 static int do_compress(SSL *ssl);
72 static int do_uncompress(SSL *ssl);
73 static int do_change_cipher_spec(SSL *ssl);
74 static int ssl3_read_n(SSL *s, int n, int max, int extend)
78 /* if there is stuff still in the buffer from a previous read,
79 * and there is more than we want, take some. */
80 if (s->s3->rbuf.left >= (int)n)
86 s->packet= &(s->s3->rbuf.buf[s->s3->rbuf.offset]);
90 s->s3->rbuf.offset+=n;
94 /* else we need to read more data */
95 if (!s->read_ahead) max=n;
96 if (max > SSL3_RT_MAX_PACKET_SIZE)
97 max=SSL3_RT_MAX_PACKET_SIZE;
99 /* First check if there is some left or we want to extend */
101 if ( (s->s3->rbuf.left != 0) ||
102 ((s->packet_length != 0) && extend))
104 newb=s->s3->rbuf.left;
107 /* Copy bytes back to the front of the buffer
108 * Take the bytes already pointed to by 'packet'
109 * and take the extra ones on the end. */
110 off=s->packet_length;
111 if (s->packet != s->s3->rbuf.buf)
112 memcpy(s->s3->rbuf.buf,s->packet,newb+off);
114 else if (s->s3->rbuf.offset != 0)
115 { /* so the data is not at the start of the buffer */
116 memcpy(s->s3->rbuf.buf,
117 &(s->s3->rbuf.buf[s->s3->rbuf.offset]),newb);
118 s->s3->rbuf.offset=0;
126 /* So we now have 'newb' bytes at the front of
127 * s->s3->rbuf.buf and need to read some more in on the end
128 * We start reading into the buffer at 's->s3->rbuf.offset'
130 s->packet=s->s3->rbuf.buf;
137 s->rwstate=SSL_READING;
139 (char *)&(s->s3->rbuf.buf[off+newb]),
144 SSLerr(SSL_F_SSL3_READ_N,SSL_R_READ_BIO_NOT_SET);
150 s->s3->rbuf.left+=newb;
156 /* record used data read */
159 s->s3->rbuf.offset=n+off;
160 s->s3->rbuf.left=newb-n;
164 s->s3->rbuf.offset=0;
175 /* Call this to get a new input record.
176 * It will return <= 0 if more data is needed, normally due to an error
177 * or non-blocking IO.
178 * When it finishes, one packet has been decoded and can be found in
179 * ssl->s3->rrec.type - is the type of record
180 * ssl->s3->rrec.data, - data
181 * ssl->s3->rrec.length, - number of bytes
183 static int ssl3_get_record(SSL *s)
185 int ssl_major,ssl_minor,al;
191 unsigned char md[EVP_MAX_MD_SIZE];
193 unsigned int mac_size;
200 if (s->options & SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER)
201 extra=SSL3_RT_MAX_EXTRA;
206 /* check if we have the header */
207 if ( (s->rstate != SSL_ST_READ_BODY) ||
208 (s->packet_length < SSL3_RT_HEADER_LENGTH))
210 n=ssl3_read_n(s,SSL3_RT_HEADER_LENGTH,
211 SSL3_RT_MAX_PACKET_SIZE,0);
212 if (n <= 0) return(n); /* error or non-blocking */
213 s->rstate=SSL_ST_READ_BODY;
217 /* Pull apart the header into the SSL3_RECORD */
221 version=(ssl_major<<8)|ssl_minor;
224 /* Lets check version */
231 if (version != s->version)
233 SSLerr(SSL_F_SSL3_GET_RECORD,SSL_R_WRONG_VERSION_NUMBER);
234 /* Send back error using their
235 * version number :-) */
237 al=SSL_AD_PROTOCOL_VERSION;
242 if ((version>>8) != SSL3_VERSION_MAJOR)
244 SSLerr(SSL_F_SSL3_GET_RECORD,SSL_R_WRONG_VERSION_NUMBER);
249 (unsigned int)SSL3_RT_MAX_ENCRYPTED_LENGTH+extra)
251 al=SSL_AD_RECORD_OVERFLOW;
252 SSLerr(SSL_F_SSL3_GET_RECORD,SSL_R_PACKET_LENGTH_TOO_LONG);
256 s->rstate=SSL_ST_READ_BODY;
259 /* get and decode the data */
260 if (s->rstate == SSL_ST_READ_BODY)
262 if (rr->length > (s->packet_length-SSL3_RT_HEADER_LENGTH))
265 /*-(s->packet_length-SSL3_RT_HEADER_LENGTH); */
266 n=ssl3_read_n(s,i,i,1);
267 if (n <= 0) return(n); /* error or non-blocking io */
269 s->rstate=SSL_ST_READ_HEADER;
272 /* At this point, we have the data in s->packet and there should be
273 * s->packet_length bytes, we must not 'overrun' this buffer :-)
274 * One of the following functions will copy the data from the
275 * s->packet buffer */
277 rr->input= &(s->packet[SSL3_RT_HEADER_LENGTH]);
279 /* ok, we can now read from 's->packet' data into 'rr'
280 * rr->input points at rr->length bytes, which
281 * need to be copied into rr->data by either
282 * the decryption or by the decompression
283 * When the data is 'copied' into the rr->data buffer,
284 * rr->input will be pointed at the new buffer */
286 /* Set the state for the following operations */
287 s->rstate=SSL_ST_READ_HEADER;
289 /* We now have - encrypted [ MAC [ compressed [ plain ] ] ]
290 * rr->length bytes of encrypted compressed stuff. */
292 /* check is not needed I belive */
293 if (rr->length > (unsigned int)SSL3_RT_MAX_ENCRYPTED_LENGTH+extra)
295 al=SSL_AD_RECORD_OVERFLOW;
296 SSLerr(SSL_F_SSL3_GET_RECORD,SSL_R_ENCRYPTED_LENGTH_TOO_LONG);
300 /* decrypt in place in 'rr->input' */
303 if (!s->method->ssl3_enc->enc(s,0))
305 al=SSL_AD_DECRYPT_ERROR;
309 printf("dec %d\n",rr->length);
310 { unsigned int z; for (z=0; z<rr->length; z++) printf("%02X%c",rr->data[z],((z+1)%16)?' ':'\n'); }
313 /* r->length is now the compressed data plus mac */
314 if ( (sess == NULL) ||
315 (s->enc_read_ctx == NULL) ||
316 (s->read_hash == NULL))
321 mac_size=EVP_MD_size(s->read_hash);
323 if (rr->length > SSL3_RT_MAX_COMPRESSED_LENGTH+extra+mac_size)
325 al=SSL_AD_RECORD_OVERFLOW;
326 SSLerr(SSL_F_SSL3_GET_RECORD,SSL_R_PRE_MAC_LENGTH_TOO_LONG);
329 /* check MAC for rr->input' */
330 if (rr->length < mac_size)
332 al=SSL_AD_DECODE_ERROR;
333 SSLerr(SSL_F_SSL3_GET_RECORD,SSL_R_LENGTH_TOO_SHORT);
336 rr->length-=mac_size;
337 i=s->method->ssl3_enc->mac(s,md,0);
338 if (memcmp(md,&(rr->data[rr->length]),mac_size) != 0)
340 al=SSL_AD_BAD_RECORD_MAC;
341 SSLerr(SSL_F_SSL3_GET_RECORD,SSL_R_BAD_MAC_DECODE);
347 /* r->length is now just compressed */
348 if (s->expand != NULL)
351 (unsigned int)SSL3_RT_MAX_COMPRESSED_LENGTH+extra)
353 al=SSL_AD_RECORD_OVERFLOW;
354 SSLerr(SSL_F_SSL3_GET_RECORD,SSL_R_COMPRESSED_LENGTH_TOO_LONG);
357 if (!do_uncompress(s))
359 al=SSL_AD_DECOMPRESSION_FAILURE;
360 SSLerr(SSL_F_SSL3_GET_RECORD,SSL_R_BAD_DECOMPRESSION);
365 if (rr->length > (unsigned int)SSL3_RT_MAX_PLAIN_LENGTH+extra)
367 al=SSL_AD_RECORD_OVERFLOW;
368 SSLerr(SSL_F_SSL3_GET_RECORD,SSL_R_DATA_LENGTH_TOO_LONG);
373 /* So at this point the following is true
374 * ssl->s3->rrec.type is the type of record
375 * ssl->s3->rrec.length == number of bytes in record
376 * ssl->s3->rrec.off == offset to first valid byte
377 * ssl->s3->rrec.data == where to take bytes from, increment
381 /* we have pulled in a full packet so zero things */
384 /* just read a 0 length packet */
385 if (rr->length == 0) goto again;
389 ssl3_send_alert(s,SSL3_AL_FATAL,al);
394 static int do_uncompress(SSL *ssl)
399 rr= &(ssl->s3->rrec);
400 i=COMP_expand_block(ssl->expand,rr->comp,
401 SSL3_RT_MAX_PLAIN_LENGTH,rr->data,(int)rr->length);
411 static int do_compress(SSL *ssl)
416 wr= &(ssl->s3->wrec);
417 i=COMP_compress_block(ssl->compress,wr->data,
418 SSL3_RT_MAX_COMPRESSED_LENGTH,
419 wr->input,(int)wr->length);
429 /* Call this to write data
430 * It will return <= 0 if not all data has been sent or non-blocking IO.
432 int ssl3_write_bytes(SSL *s, int type, const void *_buf, int len)
434 const unsigned char *buf=_buf;
435 unsigned int tot,n,nw;
438 s->rwstate=SSL_NOTHING;
442 if (SSL_in_init(s) && !s->in_handshake)
444 i=s->handshake_func(s);
445 if (i < 0) return(i);
448 SSLerr(SSL_F_SSL3_WRITE_BYTES,SSL_R_SSL_HANDSHAKE_FAILURE);
456 if (n > SSL3_RT_MAX_PLAIN_LENGTH)
457 nw=SSL3_RT_MAX_PLAIN_LENGTH;
461 i=do_ssl3_write(s,type,&(buf[tot]),nw);
468 if (type == SSL3_RT_HANDSHAKE)
469 ssl3_finish_mac(s,&(buf[tot]),i);
471 if (i == (int)n) return(tot+i);
478 static int do_ssl3_write(SSL *s, int type, const unsigned char *buf,
481 unsigned char *p,*plen;
482 int i,mac_size,clear=0;
487 /* first check is there is a SSL3_RECORD still being written
488 * out. This will happen with non blocking IO */
489 if (s->s3->wbuf.left != 0)
490 return(ssl3_write_pending(s,type,buf,len));
492 /* If we have an alert to send, lets send it */
493 if (s->s3->alert_dispatch)
495 i=ssl3_dispatch_alert(s);
498 /* if it went, fall through and send more stuff */
501 if (len <= 0) return(len);
507 if ( (sess == NULL) ||
508 (s->enc_write_ctx == NULL) ||
509 (s->write_hash == NULL))
515 mac_size=EVP_MD_size(s->write_hash);
519 /* write the header */
523 *(p++)=(s->version>>8);
524 *(p++)=s->version&0xff;
526 /* record where we are to write out packet length */
530 /* lets setup the record stuff. */
533 wr->input=(unsigned char *)buf;
535 /* we now 'read' from wr->input, wr->length bytes into
538 /* first we compress */
539 if (s->compress != NULL)
543 SSLerr(SSL_F_DO_SSL3_WRITE,SSL_R_COMPRESSION_FAILURE);
549 memcpy(wr->data,wr->input,wr->length);
553 /* we should still have the output to wr->data and the input
554 * from wr->input. Length should be wr->length.
555 * wr->data still points in the wb->buf */
559 s->method->ssl3_enc->mac(s,&(p[wr->length]),1);
560 wr->length+=mac_size;
565 /* ssl3_enc can only have an error on read */
566 s->method->ssl3_enc->enc(s,1);
568 /* record length after mac and block padding */
569 s2n(wr->length,plen);
571 /* we should now have
572 * wr->data pointing to the encrypted data, which is
574 wr->type=type; /* not needed but helps for debugging */
575 wr->length+=SSL3_RT_HEADER_LENGTH;
577 /* Now lets setup wb */
581 s->s3->wpend_tot=len;
582 s->s3->wpend_buf=buf;
583 s->s3->wpend_type=type;
584 s->s3->wpend_ret=len;
586 /* we now just need to write the buffer */
587 return(ssl3_write_pending(s,type,buf,len));
592 /* if s->s3->wbuf.left != 0, we need to call this */
593 static int ssl3_write_pending(SSL *s, int type, const unsigned char *buf,
599 if ((s->s3->wpend_tot > (int)len) || (s->s3->wpend_buf != buf)
600 || (s->s3->wpend_type != type))
602 SSLerr(SSL_F_SSL3_WRITE_PENDING,SSL_R_BAD_WRITE_RETRY);
611 s->rwstate=SSL_WRITING;
613 (char *)&(s->s3->wbuf.buf[s->s3->wbuf.offset]),
614 (unsigned int)s->s3->wbuf.left);
618 SSLerr(SSL_F_SSL3_WRITE_PENDING,SSL_R_BIO_NOT_SET);
621 if (i == s->s3->wbuf.left)
624 s->rwstate=SSL_NOTHING;
625 return(s->s3->wpend_ret);
629 s->s3->wbuf.offset+=i;
634 int ssl3_read_bytes(SSL *s, int type, unsigned char *buf, int len)
641 if (s->s3->rbuf.buf == NULL) /* Not initialize yet */
642 if (!ssl3_setup_buffers(s))
645 if (!s->in_handshake && SSL_in_init(s))
647 i=s->handshake_func(s);
648 if (i < 0) return(i);
651 SSLerr(SSL_F_SSL3_READ_BYTES,SSL_R_SSL_HANDSHAKE_FAILURE);
656 s->rwstate=SSL_NOTHING;
658 /* s->s3->rrec.type - is the type of record
659 * s->s3->rrec.data, - data
660 * s->s3->rrec.off, - ofset into 'data' for next read
661 * s->s3->rrec.length, - number of bytes. */
665 if ((rr->length == 0) || (s->rstate == SSL_ST_READ_BODY))
667 ret=ssl3_get_record(s);
668 if (ret <= 0) return(ret);
671 /* we now have a packet which can be read and processed */
673 if (s->s3->change_cipher_spec && (rr->type != SSL3_RT_HANDSHAKE))
675 al=SSL_AD_UNEXPECTED_MESSAGE;
676 SSLerr(SSL_F_SSL3_READ_BYTES,SSL_R_DATA_BETWEEN_CCS_AND_FINISHED);
680 /* If the other end has shutdown, throw anything we read away */
681 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
684 s->rwstate=SSL_NOTHING;
688 /* Check for an incoming 'Client Request' message */
689 if ((rr->type == SSL3_RT_HANDSHAKE) && (rr->length == 4) &&
690 (rr->data[0] == SSL3_MT_CLIENT_REQUEST) &&
691 (s->session != NULL) && (s->session->cipher != NULL))
693 if ((rr->data[1] != 0) || (rr->data[2] != 0) ||
696 al=SSL_AD_DECODE_ERROR;
697 SSLerr(SSL_F_SSL3_READ_BYTES,SSL_R_BAD_CLIENT_REQUEST);
701 if (SSL_is_init_finished(s) &&
702 !(s->s3->flags & SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS) &&
706 if (ssl3_renegotiate_check(s))
708 n=s->handshake_func(s);
709 if (n < 0) return(n);
712 SSLerr(SSL_F_SSL3_READ_BYTES,SSL_R_SSL_HANDSHAKE_FAILURE);
718 /* ZZZ */ goto start;
721 /* if it is not the type we want, or we have shutdown and want
722 * the peer shutdown */
723 if ((rr->type != type) || (s->shutdown & SSL_SENT_SHUTDOWN))
725 if (rr->type == SSL3_RT_ALERT)
727 if ((rr->length != 2) || (rr->off != 0))
729 al=SSL_AD_DECODE_ERROR;
730 SSLerr(SSL_F_SSL3_READ_BYTES,SSL_R_BAD_ALERT_RECORD);
737 /* clear from buffer */
740 if (s->info_callback != NULL)
742 else if (s->ctx->info_callback != NULL)
743 cb=s->ctx->info_callback;
748 cb(s,SSL_CB_READ_ALERT,j);
754 if (n == SSL_AD_CLOSE_NOTIFY)
756 s->shutdown|=SSL_RECEIVED_SHUTDOWN;
764 s->rwstate=SSL_NOTHING;
765 s->s3->fatal_alert=n;
766 SSLerr(SSL_F_SSL3_READ_BYTES,
767 SSL_AD_REASON_OFFSET+n);
769 ERR_add_error_data(2,"SSL alert number ",tmp);
770 s->shutdown|=SSL_RECEIVED_SHUTDOWN;
771 SSL_CTX_remove_session(s->ctx,s->session);
776 al=SSL_AD_ILLEGAL_PARAMETER;
777 SSLerr(SSL_F_SSL3_READ_BYTES,SSL_R_UNKNOWN_ALERT_TYPE);
785 if (s->shutdown & SSL_SENT_SHUTDOWN)
787 s->rwstate=SSL_NOTHING;
792 if (rr->type == SSL3_RT_CHANGE_CIPHER_SPEC)
794 if ( (rr->length != 1) || (rr->off != 0) ||
795 (rr->data[0] != SSL3_MT_CCS))
797 i=SSL_AD_ILLEGAL_PARAMETER;
798 SSLerr(SSL_F_SSL3_READ_BYTES,SSL_R_BAD_CHANGE_CIPHER_SPEC);
803 s->s3->change_cipher_spec=1;
804 if (!do_change_cipher_spec(s))
810 /* else we have a handshake */
811 if ((rr->type == SSL3_RT_HANDSHAKE) &&
814 if (((s->state&SSL_ST_MASK) == SSL_ST_OK) &&
815 !(s->s3->flags & SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS))
817 s->state=SSL_ST_BEFORE|(s->server)
822 n=s->handshake_func(s);
823 if (n < 0) return(n);
826 SSLerr(SSL_F_SSL3_READ_BYTES,SSL_R_SSL_HANDSHAKE_FAILURE);
830 /* In the case where we try to read application data
831 * the first time, but we trigger an SSL handshake, we
832 * return -1 with the retry option set. I do this
833 * otherwise renegotiation can cause nasty problems
834 * in the non-blocking world */
836 s->rwstate=SSL_READING;
838 BIO_clear_retry_flags(bio);
839 BIO_set_retry_read(bio);
847 /* TLS just ignores unknown message types */
848 if (s->version == TLS1_VERSION)
853 case SSL3_RT_CHANGE_CIPHER_SPEC:
855 case SSL3_RT_HANDSHAKE:
856 al=SSL_AD_UNEXPECTED_MESSAGE;
857 SSLerr(SSL_F_SSL3_READ_BYTES,SSL_R_UNEXPECTED_RECORD);
859 case SSL3_RT_APPLICATION_DATA:
860 /* At this point, we were expecting something else,
861 * but have application data. What we do is set the
862 * error, and return -1. On the way out, if the
863 * library was running inside ssl3_read() and it makes
864 * sense to read application data at this point, we
865 * will indulge it. This will mostly happen during
866 * session renegotiation.
868 if (s->s3->in_read_app_data &&
869 (s->s3->total_renegotiations != 0) &&
871 (s->state & SSL_ST_CONNECT) &&
872 (s->state >= SSL3_ST_CW_CLNT_HELLO_A) &&
873 (s->state <= SSL3_ST_CR_SRVR_HELLO_A)
875 (s->state & SSL_ST_ACCEPT) &&
876 (s->state <= SSL3_ST_SW_HELLO_REQ_A) &&
877 (s->state >= SSL3_ST_SR_CLNT_HELLO_A)
881 s->s3->in_read_app_data=0;
886 al=SSL_AD_UNEXPECTED_MESSAGE;
887 SSLerr(SSL_F_SSL3_READ_BYTES,SSL_R_UNEXPECTED_RECORD);
893 /* make sure that we are not getting application data when we
894 * are doing a handshake for the first time */
895 if (SSL_in_init(s) && (type == SSL3_RT_APPLICATION_DATA) &&
896 (s->enc_read_ctx == NULL))
898 al=SSL_AD_UNEXPECTED_MESSAGE;
899 SSLerr(SSL_F_SSL3_READ_BYTES,SSL_R_APP_DATA_IN_HANDSHAKE);
903 if (len <= 0) return(len);
905 if ((unsigned int)len > rr->length)
910 memcpy(buf,&(rr->data[rr->off]),(unsigned int)n);
915 s->rstate=SSL_ST_READ_HEADER;
919 if (type == SSL3_RT_HANDSHAKE)
920 ssl3_finish_mac(s,buf,n);
923 ssl3_send_alert(s,SSL3_AL_FATAL,al);
928 static int do_change_cipher_spec(SSL *s)
931 unsigned char *sender;
934 if (s->state & SSL_ST_ACCEPT)
935 i=SSL3_CHANGE_CIPHER_SERVER_READ;
937 i=SSL3_CHANGE_CIPHER_CLIENT_READ;
939 if (s->s3->tmp.key_block == NULL)
941 s->session->cipher=s->s3->tmp.new_cipher;
942 if (!s->method->ssl3_enc->setup_key_block(s)) return(0);
945 if (!s->method->ssl3_enc->change_cipher_state(s,i))
948 /* we have to record the message digest at
949 * this point so we can get it before we read
950 * the finished message */
951 if (s->state & SSL_ST_CONNECT)
953 sender=s->method->ssl3_enc->server_finished;
954 slen=s->method->ssl3_enc->server_finished_len;
958 sender=s->method->ssl3_enc->client_finished;
959 slen=s->method->ssl3_enc->client_finished_len;
962 s->method->ssl3_enc->final_finish_mac(s,
963 &(s->s3->finish_dgst1),
964 &(s->s3->finish_dgst2),
965 sender,slen,&(s->s3->tmp.finish_md[0]));
970 int ssl3_do_write(SSL *s, int type)
974 ret=ssl3_write_bytes(s,type,&s->init_buf->data[s->init_off],
976 if (ret == s->init_num)
978 if (ret < 0) return(-1);
984 void ssl3_send_alert(SSL *s, int level, int desc)
986 /* Map tls/ssl alert value to correct one */
987 desc=s->method->ssl3_enc->alert_value(desc);
988 if (desc < 0) return;
989 /* If a fatal one, remove from cache */
990 if ((level == 2) && (s->session != NULL))
991 SSL_CTX_remove_session(s->ctx,s->session);
993 s->s3->alert_dispatch=1;
994 s->s3->send_alert[0]=level;
995 s->s3->send_alert[1]=desc;
996 if (s->s3->wbuf.left == 0) /* data still being written out */
997 ssl3_dispatch_alert(s);
998 /* else data is still being written out, we will get written
999 * some time in the future */
1002 int ssl3_dispatch_alert(SSL *s)
1007 s->s3->alert_dispatch=0;
1008 i=do_ssl3_write(s,SSL3_RT_ALERT,&s->s3->send_alert[0],2);
1011 s->s3->alert_dispatch=1;
1015 /* If it is important, send it now. If the message
1016 * does not get sent due to non-blocking IO, we will
1017 * not worry too much. */
1018 if (s->s3->send_alert[0] == SSL3_AL_FATAL)
1021 if (s->info_callback != NULL)
1022 cb=s->info_callback;
1023 else if (s->ctx->info_callback != NULL)
1024 cb=s->ctx->info_callback;
1028 j=(s->s3->send_alert[0]<<8)|s->s3->send_alert[1];
1029 cb(s,SSL_CB_WRITE_ALERT,j);