-/* ssl/record/rec_layer_d1.c */
/*
* DTLS implementation written by Nagendra Modadugu
* (nagendra@cs.stanford.edu) for the OpenSSL project 2005.
#include "../ssl_locl.h"
#include <openssl/evp.h>
#include <openssl/buffer.h>
-#include <openssl/pqueue.h>
#include <openssl/rand.h>
#include "record_locl.h"
d->processed_rcds.q = pqueue_new();
d->buffered_app_data.q = pqueue_new();
- if (!d->unprocessed_rcds.q || !d->processed_rcds.q
- || !d->buffered_app_data.q) {
+ if (d->unprocessed_rcds.q == NULL || d->processed_rcds.q == NULL
+ || d->buffered_app_data.q == NULL) {
pqueue_free(d->unprocessed_rcds.q);
pqueue_free(d->processed_rcds.q);
pqueue_free(d->buffered_app_data.q);
DTLS_RECORD_LAYER *d;
pitem *item = NULL;
DTLS1_RECORD_DATA *rdata;
- pqueue unprocessed_rcds;
- pqueue processed_rcds;
- pqueue buffered_app_data;
+ pqueue *unprocessed_rcds;
+ pqueue *processed_rcds;
+ pqueue *buffered_app_data;
d = rl->d;
memcpy(rl->write_sequence, rl->read_sequence, sizeof(rl->write_sequence));
}
+
+void DTLS_RECORD_LAYER_set_write_sequence(RECORD_LAYER *rl, unsigned char *seq)
+{
+ memcpy(rl->write_sequence, seq, SEQ_NUM_SIZE);
+}
+
static int have_handshake_fragment(SSL *s, int type, unsigned char *buf,
- int len, int peek);
+ int len);
/* copy buffered record into SSL structure */
static int dtls1_copy_record(SSL *s, pitem *item)
#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)) {
+ (SSL_get_state(s) == TLS_ST_SR_FINISHED
+ || SSL_get_state(s) == TLS_ST_CR_FINISHED)) {
BIO_ctrl(SSL_get_rbio(s), BIO_CTRL_DGRAM_SCTP_GET_RCVINFO,
sizeof(rdata->recordinfo), &rdata->recordinfo);
}
* (possibly multiple records if we still don't have anything to return).
*
* This function must handle any surprises the peer may have for us, such as
- * Alert records (e.g. close_notify), ChangeCipherSpec records (not really
- * a surprise, but handled as if it were), or renegotiation requests.
+ * Alert records (e.g. close_notify) or renegotiation requests. ChangeCipherSpec
+ * messages are treated as if they were handshake messages *if* the |recd_type|
+ * argument is non NULL.
* Also if record payloads contain fragments too small to process, we store
* them until there is enough for the respective protocol (the record protocol
* may use arbitrary fragmentation and even interleaving):
* Application data protocol
* none of our business
*/
-int dtls1_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek)
+int dtls1_read_bytes(SSL *s, int type, int *recvd_type, unsigned char *buf,
+ int len, int peek)
{
int al, i, j, ret;
unsigned int n;
/*
* check whether there's a handshake message (client hello?) waiting
*/
- if ((ret = have_handshake_fragment(s, type, buf, len, peek)))
+ if ((ret = have_handshake_fragment(s, type, buf, len)))
return ret;
/*
* 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)
+ if ((!ossl_statem_get_in_handshake(s) && SSL_in_init(s)) ||
+ (BIO_dgram_is_sctp(SSL_get_rbio(s))
+ && ossl_statem_in_sctp_read_sock(s)
&& s->s3->in_read_app_data != 2))
#else
- if (!s->in_handshake && SSL_in_init(s))
+ if (!ossl_statem_get_in_handshake(s) && SSL_in_init(s))
#endif
{
/* type == SSL3_RT_APPLICATION_DATA */
* We are not handshaking and have no data yet, so process data buffered
* during the last handshake in advance, if any.
*/
- if (s->state == SSL_ST_OK && SSL3_RECORD_get_length(rr) == 0) {
+ if (SSL_is_init_finished(s) && SSL3_RECORD_get_length(rr) == 0) {
pitem *item;
item = pqueue_pop(s->rlayer.d->buffered_app_data.q);
if (item) {
}
}
- if (s->d1->listen && rr->type != SSL3_RT_HANDSHAKE) {
- SSL3_RECORD_set_length(rr, 0);
- goto start;
- }
-
/* we now have a packet which can be read and processed */
if (s->s3->change_cipher_spec /* set when we receive ChangeCipherSpec,
return (0);
}
- if (type == SSL3_RECORD_get_type(rr)) {
- /* SSL3_RT_APPLICATION_DATA or
- * SSL3_RT_HANDSHAKE */
+ if (type == SSL3_RECORD_get_type(rr)
+ || (SSL3_RECORD_get_type(rr) == SSL3_RT_CHANGE_CIPHER_SPEC
+ && type == SSL3_RT_HANDSHAKE && recvd_type != NULL)) {
+ /*
+ * SSL3_RT_APPLICATION_DATA or
+ * SSL3_RT_HANDSHAKE or
+ * SSL3_RT_CHANGE_CIPHER_SPEC
+ */
/*
* make sure that we are not getting application data when we are
* doing a handshake for the first time
goto f_err;
}
+ if (recvd_type != NULL)
+ *recvd_type = SSL3_RECORD_get_type(rr);
+
if (len <= 0)
return (len);
*/
if (BIO_dgram_is_sctp(SSL_get_rbio(s)) &&
SSL3_RECORD_get_type(rr) == SSL3_RT_APPLICATION_DATA &&
- (s->state == DTLS1_SCTP_ST_SR_READ_SOCK
- || s->state == DTLS1_SCTP_ST_CR_READ_SOCK)) {
+ ossl_statem_in_sctp_read_sock(s)) {
s->rwstate = SSL_READING;
BIO_clear_retry_flags(SSL_get_rbio(s));
BIO_set_retry_read(SSL_get_rbio(s));
dest_len = &s->rlayer.d->alert_fragment_len;
}
#ifndef OPENSSL_NO_HEARTBEATS
- else if (SSL3_RECORD_get_type(rr) == TLS1_RT_HEARTBEAT) {
+ else if (SSL3_RECORD_get_type(rr) == DTLS1_RT_HEARTBEAT) {
/* We allow a 0 return */
if (dtls1_process_heartbeat(s, SSL3_RECORD_get_data(rr),
SSL3_RECORD_get_length(rr)) < 0) {
}
if (SSL3_RECORD_get_type(rr) == SSL3_RT_CHANGE_CIPHER_SPEC) {
- unsigned int ccs_hdr_len = DTLS1_CCS_HEADER_LENGTH;
-
- if (s->version == DTLS1_BAD_VER)
- ccs_hdr_len = 3;
-
- /*
- * 'Change Cipher Spec' is just a single byte, so we know exactly
- * what the record payload has to look like
- */
- /* XDTLS: check that epoch is consistent */
- if ((SSL3_RECORD_get_length(rr) != ccs_hdr_len)
- || (SSL3_RECORD_get_off(rr) != 0)
- || (SSL3_RECORD_get_data(rr)[0] != SSL3_MT_CCS)) {
- i = SSL_AD_ILLEGAL_PARAMETER;
- SSLerr(SSL_F_DTLS1_READ_BYTES, SSL_R_BAD_CHANGE_CIPHER_SPEC);
- goto err;
- }
-
- SSL3_RECORD_set_length(rr, 0);
-
- if (s->msg_callback)
- s->msg_callback(0, s->version, SSL3_RT_CHANGE_CIPHER_SPEC,
- SSL3_RECORD_get_data(rr), 1, s, s->msg_callback_arg);
-
/*
* We can't process a CCS now, because previous handshake messages
* are still missing, so just drop it.
*/
- if (!s->d1->change_cipher_spec_ok) {
- goto start;
- }
-
- s->d1->change_cipher_spec_ok = 0;
-
- s->s3->change_cipher_spec = 1;
- if (!ssl3_do_change_cipher_spec(s))
- goto err;
-
- /* do this whenever CCS is processed */
- dtls1_reset_seq_numbers(s, SSL3_CC_READ);
-
- 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
-
+ SSL3_RECORD_set_length(rr, 0);
goto start;
}
* Unexpected handshake message (Client Hello, or protocol violation)
*/
if ((s->rlayer.d->handshake_fragment_len >= DTLS1_HM_HEADER_LENGTH) &&
- !s->in_handshake) {
+ !ossl_statem_get_in_handshake(s)) {
struct hm_header_st msg_hdr;
/* this may just be a stale retransmit */
goto start;
}
- if (((s->state & SSL_ST_MASK) == SSL_ST_OK) &&
+ if (SSL_is_init_finished(s) &&
!(s->s3->flags & SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS)) {
- s->state = s->server ? SSL_ST_ACCEPT : SSL_ST_CONNECT;
+ ossl_statem_set_in_init(s, 1);
s->renegotiate = 1;
s->new_session = 1;
}
case SSL3_RT_HANDSHAKE:
/*
* we already handled all of these, with the possible exception of
- * SSL3_RT_HANDSHAKE when s->in_handshake is set, but that should not
- * happen when type != rr->type
+ * SSL3_RT_HANDSHAKE when ossl_statem_get_in_handshake(s) is true, but
+ * that should not happen when type != rr->type
*/
al = SSL_AD_UNEXPECTED_MESSAGE;
SSLerr(SSL_F_DTLS1_READ_BYTES, ERR_R_INTERNAL_ERROR);
*/
if (s->s3->in_read_app_data &&
(s->s3->total_renegotiations != 0) &&
- (((s->state & SSL_ST_CONNECT) &&
- (s->state >= SSL3_ST_CW_CLNT_HELLO_A) &&
- (s->state <= SSL3_ST_CR_SRVR_HELLO_A)
- ) || ((s->state & SSL_ST_ACCEPT) &&
- (s->state <= SSL3_ST_SW_HELLO_REQ_A) &&
- (s->state >= SSL3_ST_SR_CLNT_HELLO_A)
- )
- )) {
+ ossl_statem_app_data_allowed(s)) {
s->s3->in_read_app_data = 2;
return (-1);
} else {
f_err:
ssl3_send_alert(s, SSL3_AL_FATAL, al);
- err:
return (-1);
}
* is started.
*/
static int have_handshake_fragment(SSL *s, int type, unsigned char *buf,
- int len, int peek)
+ int len)
{
if ((type == SSL3_RT_HANDSHAKE)
SSL3_BUFFER *wb;
SSL_SESSION *sess;
- wb = &s->rlayer.wbuf;
+ wb = &s->rlayer.wbuf[0];
/*
* first check if there is a SSL3_BUFFER still being written out. This
/* Need explicit part of IV for GCM mode */
else if (mode == EVP_CIPH_GCM_MODE)
eivlen = EVP_GCM_TLS_EXPLICIT_IV_LEN;
+ else if (mode == EVP_CIPH_CCM_MODE)
+ eivlen = EVP_CCM_TLS_EXPLICIT_IV_LEN;
else
eivlen = 0;
} else
/* first we compress */
if (s->compress != NULL) {
- if (!ssl3_do_compress(s)) {
+ if (!ssl3_do_compress(s, wr)) {
SSLerr(SSL_F_DO_DTLS1_WRITE, SSL_R_COMPRESSION_FAILURE);
goto err;
}
*/
if (mac_size != 0) {
- if (s->method->ssl3_enc->mac(s,
+ if (s->method->ssl3_enc->mac(s, wr,
&(p[SSL3_RECORD_get_length(wr) + eivlen]), 1) < 0)
goto err;
SSL3_RECORD_add_length(wr, mac_size);
if (eivlen)
SSL3_RECORD_add_length(wr, eivlen);
- if (s->method->ssl3_enc->enc(s, 1) < 1)
+ if (s->method->ssl3_enc->enc(s, wr, 1, 1) < 1)
goto err;
/* record length after mac and block padding */
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