diff options
Diffstat (limited to 'ssl/d1_pkt.c')
-rw-r--r-- | ssl/d1_pkt.c | 123 |
1 files changed, 108 insertions, 15 deletions
diff --git a/ssl/d1_pkt.c b/ssl/d1_pkt.c index 77da0c975..5fe1321fc 100644 --- a/ssl/d1_pkt.c +++ b/ssl/d1_pkt.c @@ -232,6 +232,14 @@ dtls1_buffer_record(SSL *s, record_pqueue *queue, unsigned char *priority) item->data = rdata; +#ifndef OPENSSL_NO_SCTP + /* Store bio_dgram_sctp_rcvinfo struct */ + if (BIO_dgram_is_sctp(SSL_get_rbio(s)) && + (s->state == SSL3_ST_SR_FINISHED_A || s->state == SSL3_ST_CR_FINISHED_A)) { + BIO_ctrl(SSL_get_rbio(s), BIO_CTRL_DGRAM_SCTP_GET_RCVINFO, sizeof(rdata->recordinfo), &rdata->recordinfo); + } +#endif + /* insert should not fail, since duplicates are dropped */ if (pqueue_insert(queue->q, item) == NULL) { @@ -638,20 +646,28 @@ again: goto again; /* get another record */ } - /* Check whether this is a repeat, or aged record. - * Don't check if we're listening and this message is - * a ClientHello. They can look as if they're replayed, - * since they arrive from different connections and - * would be dropped unnecessarily. - */ - if (!(s->d1->listen && rr->type == SSL3_RT_HANDSHAKE && - *p == SSL3_MT_CLIENT_HELLO) && - !dtls1_record_replay_check(s, bitmap)) - { - rr->length = 0; - s->packet_length=0; /* dump this record */ - goto again; /* get another record */ - } +#ifndef OPENSSL_NO_SCTP + /* Only do replay check if no SCTP bio */ + if (!BIO_dgram_is_sctp(SSL_get_rbio(s))) + { +#endif + /* Check whether this is a repeat, or aged record. + * Don't check if we're listening and this message is + * a ClientHello. They can look as if they're replayed, + * since they arrive from different connections and + * would be dropped unnecessarily. + */ + if (!(s->d1->listen && rr->type == SSL3_RT_HANDSHAKE && + *p == SSL3_MT_CLIENT_HELLO) && + !dtls1_record_replay_check(s, bitmap)) + { + rr->length = 0; + s->packet_length=0; /* dump this record */ + goto again; /* get another record */ + } +#ifndef OPENSSL_NO_SCTP + } +#endif /* just read a 0 length packet */ if (rr->length == 0) goto again; @@ -737,7 +753,17 @@ int dtls1_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek) /* Now s->d1->handshake_fragment_len == 0 if type == SSL3_RT_HANDSHAKE. */ +#ifndef OPENSSL_NO_SCTP + /* Continue handshake if it had to be interrupted to read + * app data with SCTP. + */ + if ((!s->in_handshake && SSL_in_init(s)) || + (BIO_dgram_is_sctp(SSL_get_rbio(s)) && + (s->state == DTLS1_SCTP_ST_SR_READ_SOCK || s->state == DTLS1_SCTP_ST_CR_READ_SOCK) && + s->s3->in_read_app_data != 2)) +#else if (!s->in_handshake && SSL_in_init(s)) +#endif { /* type == SSL3_RT_APPLICATION_DATA */ i=s->handshake_func(s); @@ -768,6 +794,15 @@ start: item = pqueue_pop(s->d1->buffered_app_data.q); if (item) { +#ifndef OPENSSL_NO_SCTP + /* Restore bio_dgram_sctp_rcvinfo struct */ + if (BIO_dgram_is_sctp(SSL_get_rbio(s))) + { + DTLS1_RECORD_DATA *rdata = (DTLS1_RECORD_DATA *) item->data; + BIO_ctrl(SSL_get_rbio(s), BIO_CTRL_DGRAM_SCTP_SET_RCVINFO, sizeof(rdata->recordinfo), &rdata->recordinfo); + } +#endif + dtls1_copy_record(s, item); OPENSSL_free(item->data); @@ -850,6 +885,31 @@ start: rr->off=0; } } + +#ifndef OPENSSL_NO_SCTP + /* We were about to renegotiate but had to read + * belated application data first, so retry. + */ + if (BIO_dgram_is_sctp(SSL_get_rbio(s)) && + rr->type == SSL3_RT_APPLICATION_DATA && + (s->state == DTLS1_SCTP_ST_SR_READ_SOCK || s->state == DTLS1_SCTP_ST_CR_READ_SOCK)) + { + s->rwstate=SSL_READING; + BIO_clear_retry_flags(SSL_get_rbio(s)); + BIO_set_retry_read(SSL_get_rbio(s)); + } + + /* We might had to delay a close_notify alert because + * of reordered app data. If there was an alert and there + * is no message to read anymore, finally set shutdown. + */ + if (BIO_dgram_is_sctp(SSL_get_rbio(s)) && + s->d1->shutdown_received && !BIO_dgram_sctp_msg_waiting(SSL_get_rbio(s))) + { + s->shutdown |= SSL_RECEIVED_SHUTDOWN; + return(0); + } +#endif return(n); } @@ -1022,6 +1082,21 @@ start: s->s3->warn_alert = alert_descr; if (alert_descr == SSL_AD_CLOSE_NOTIFY) { +#ifndef OPENSSL_NO_SCTP + /* With SCTP and streams the socket may deliver app data + * after a close_notify alert. We have to check this + * first so that nothing gets discarded. + */ + if (BIO_dgram_is_sctp(SSL_get_rbio(s)) && + BIO_dgram_sctp_msg_waiting(SSL_get_rbio(s))) + { + s->d1->shutdown_received = 1; + s->rwstate=SSL_READING; + BIO_clear_retry_flags(SSL_get_rbio(s)); + BIO_set_retry_read(SSL_get_rbio(s)); + return -1; + } +#endif s->shutdown |= SSL_RECEIVED_SHUTDOWN; return(0); } @@ -1128,6 +1203,15 @@ start: if (s->version == DTLS1_BAD_VER) s->d1->handshake_read_seq++; +#ifndef OPENSSL_NO_SCTP + /* Remember that a CCS has been received, + * so that an old key of SCTP-Auth can be + * deleted when a CCS is sent. Will be ignored + * if no SCTP is used + */ + BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_AUTH_CCS_RCVD, 1, NULL); +#endif + goto start; } @@ -1264,7 +1348,16 @@ dtls1_write_app_data_bytes(SSL *s, int type, const void *buf_, int len) { int i; - if (SSL_in_init(s) && !s->in_handshake) +#ifndef OPENSSL_NO_SCTP + /* Check if we have to continue an interrupted handshake + * for reading belated app data with SCTP. + */ + if ((SSL_in_init(s) && !s->in_handshake) || + (BIO_dgram_is_sctp(SSL_get_wbio(s)) && + (s->state == DTLS1_SCTP_ST_SR_READ_SOCK || s->state == DTLS1_SCTP_ST_CR_READ_SOCK))) +#else + if (SSL_in_init(s) && !s->in_handshake) +#endif { i=s->handshake_func(s); if (i < 0) return(i); |