static int ssl_set_version(SSL *s);
static int ca_dn_cmp(const X509_NAME *const *a, const X509_NAME *const *b);
-#if 0
-/*
- * Temporarily disabled during development of new state machine code.
- * TODO: Clean me up
- */
-static int ssl3_check_change(SSL *s);
-#endif
static int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk,
unsigned char *p);
-
-#if 0
-/*
- * Temporarily disabled during development of new state machine code.
- * TODO: Clean me up
- */
-int ssl3_connect(SSL *s)
-{
- BUF_MEM *buf = NULL;
- unsigned long Time = (unsigned long)time(NULL);
- void (*cb) (const SSL *ssl, int type, int val) = NULL;
- int ret = -1;
- int new_state, state, skip = 0;
-
- RAND_add(&Time, sizeof(Time), 0);
- ERR_clear_error();
- clear_sys_error();
-
- if (s->info_callback != NULL)
- cb = s->info_callback;
- else if (s->ctx->info_callback != NULL)
- cb = s->ctx->info_callback;
-
- s->in_handshake++;
- if (!SSL_in_init(s) || SSL_in_before(s)) {
- if (!SSL_clear(s))
- return -1;
- }
-
-#ifndef OPENSSL_NO_HEARTBEATS
- /*
- * If we're awaiting a HeartbeatResponse, pretend we already got and
- * don't await it anymore, because Heartbeats don't make sense during
- * handshakes anyway.
- */
- if (s->tlsext_hb_pending) {
- s->tlsext_hb_pending = 0;
- s->tlsext_hb_seq++;
- }
-#endif
-
- for (;;) {
- state = s->state;
-
- switch (s->state) {
- case SSL_ST_RENEGOTIATE:
- s->renegotiate = 1;
- s->state = SSL_ST_CONNECT;
- s->ctx->stats.sess_connect_renegotiate++;
- /* break */
- case SSL_ST_BEFORE:
- case SSL_ST_CONNECT:
- case SSL_ST_BEFORE | SSL_ST_CONNECT:
- case SSL_ST_OK | SSL_ST_CONNECT:
-
- s->server = 0;
- if (cb != NULL)
- cb(s, SSL_CB_HANDSHAKE_START, 1);
-
- if ((s->version >> 8) != SSL3_VERSION_MAJOR
- && s->version != TLS_ANY_VERSION) {
- SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
- s->state = SSL_ST_ERR;
- ret = -1;
- goto end;
- }
-
- if (s->version != TLS_ANY_VERSION &&
- !ssl_security(s, SSL_SECOP_VERSION, 0, s->version, NULL)) {
- SSLerr(SSL_F_SSL3_CONNECT, SSL_R_VERSION_TOO_LOW);
- return -1;
- }
-
- /* s->version=SSL3_VERSION; */
- s->type = SSL_ST_CONNECT;
-
- if (s->init_buf == NULL) {
- if ((buf = BUF_MEM_new()) == NULL) {
- ret = -1;
- s->state = SSL_ST_ERR;
- goto end;
- }
- if (!BUF_MEM_grow(buf, SSL3_RT_MAX_PLAIN_LENGTH)) {
- ret = -1;
- s->state = SSL_ST_ERR;
- goto end;
- }
- s->init_buf = buf;
- buf = NULL;
- }
-
- if (!ssl3_setup_buffers(s)) {
- ret = -1;
- goto end;
- }
-
- /* setup buffing BIO */
- if (!ssl_init_wbio_buffer(s, 0)) {
- ret = -1;
- s->state = SSL_ST_ERR;
- goto end;
- }
-
- /* don't push the buffering BIO quite yet */
-
- ssl3_init_finished_mac(s);
-
- s->state = SSL3_ST_CW_CLNT_HELLO_A;
- s->ctx->stats.sess_connect++;
- s->init_num = 0;
- /*
- * Should have been reset by ssl3_get_finished, too.
- */
- s->s3->change_cipher_spec = 0;
- break;
-
- case SSL3_ST_CW_CLNT_HELLO_A:
- case SSL3_ST_CW_CLNT_HELLO_B:
-
- s->shutdown = 0;
- ret = ssl3_client_hello(s);
- if (ret <= 0)
- goto end;
- s->state = SSL3_ST_CR_SRVR_HELLO_A;
- s->init_num = 0;
-
- /* turn on buffering for the next lot of output */
- if (s->bbio != s->wbio)
- s->wbio = BIO_push(s->bbio, s->wbio);
-
- break;
-
- case SSL3_ST_CR_SRVR_HELLO_A:
- case SSL3_ST_CR_SRVR_HELLO_B:
- ret = ssl3_get_server_hello(s);
- if (ret <= 0)
- goto end;
-
- if (s->hit) {
- s->state = SSL3_ST_CR_CHANGE_A;
- if (s->tlsext_ticket_expected) {
- /* receive renewed session ticket */
- s->state = SSL3_ST_CR_SESSION_TICKET_A;
- }
- } else {
- s->state = SSL3_ST_CR_CERT_A;
- }
- s->init_num = 0;
- break;
- case SSL3_ST_CR_CERT_A:
- case SSL3_ST_CR_CERT_B:
- /* Noop (ret = 0) for everything but EAP-FAST. */
- ret = ssl3_check_change(s);
- if (ret < 0)
- goto end;
- if (ret == 1) {
- s->hit = 1;
- s->state = SSL3_ST_CR_CHANGE_A;
- s->init_num = 0;
- break;
- }
-
- /* Check if it is anon DH/ECDH, SRP auth */
- /* or PSK */
- if (!(s->s3->tmp.new_cipher->algorithm_auth &
- (SSL_aNULL | SSL_aSRP | SSL_aPSK))) {
- ret = ssl3_get_server_certificate(s);
- if (ret <= 0)
- goto end;
-
- if (s->tlsext_status_expected)
- s->state = SSL3_ST_CR_CERT_STATUS_A;
- else
- s->state = SSL3_ST_CR_KEY_EXCH_A;
- } else {
- skip = 1;
- s->state = SSL3_ST_CR_KEY_EXCH_A;
- }
-
- s->init_num = 0;
- break;
-
- case SSL3_ST_CR_KEY_EXCH_A:
- case SSL3_ST_CR_KEY_EXCH_B:
- ret = ssl3_get_key_exchange(s);
- if (ret <= 0)
- goto end;
- s->state = SSL3_ST_CR_CERT_REQ_A;
- s->init_num = 0;
-
- /*
- * at this point we check that we have the required stuff from
- * the server
- */
- if (!ssl3_check_cert_and_algorithm(s)) {
- ret = -1;
- s->state = SSL_ST_ERR;
- goto end;
- }
- break;
-
- case SSL3_ST_CR_CERT_REQ_A:
- case SSL3_ST_CR_CERT_REQ_B:
- ret = ssl3_get_certificate_request(s);
- if (ret <= 0)
- goto end;
- s->state = SSL3_ST_CR_SRVR_DONE_A;
- s->init_num = 0;
- break;
-
- case SSL3_ST_CR_SRVR_DONE_A:
- case SSL3_ST_CR_SRVR_DONE_B:
- ret = ssl3_get_server_done(s);
- if (ret <= 0)
- goto end;
-
- if (s->s3->tmp.cert_req)
- s->state = SSL3_ST_CW_CERT_A;
- else
- s->state = SSL3_ST_CW_KEY_EXCH_A;
- s->init_num = 0;
-
- break;
-
- case SSL3_ST_CW_CERT_A:
- case SSL3_ST_CW_CERT_B:
- case SSL3_ST_CW_CERT_C:
- case SSL3_ST_CW_CERT_D:
- ret = ssl3_send_client_certificate(s);
- if (ret <= 0)
- goto end;
- s->state = SSL3_ST_CW_KEY_EXCH_A;
- s->init_num = 0;
- break;
-
- case SSL3_ST_CW_KEY_EXCH_A:
- case SSL3_ST_CW_KEY_EXCH_B:
- ret = ssl3_send_client_key_exchange(s);
- if (ret <= 0)
- goto end;
- /*
- * EAY EAY EAY need to check for DH fix cert sent back
- */
- /*
- * For TLS, cert_req is set to 2, so a cert chain of nothing is
- * sent, but no verify packet is sent
- */
- /*
- * XXX: For now, we do not support client authentication in ECDH
- * cipher suites with ECDH (rather than ECDSA) certificates. We
- * need to skip the certificate verify message when client's
- * ECDH public key is sent inside the client certificate.
- */
- if (s->s3->tmp.cert_req == 1) {
- s->state = SSL3_ST_CW_CERT_VRFY_A;
- } else {
- s->state = SSL3_ST_CW_CHANGE_A;
- }
- if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY) {
- s->state = SSL3_ST_CW_CHANGE_A;
- }
-
- s->init_num = 0;
- break;
-
- case SSL3_ST_CW_CERT_VRFY_A:
- case SSL3_ST_CW_CERT_VRFY_B:
- ret = ssl3_send_client_verify(s);
- if (ret <= 0)
- goto end;
- s->state = SSL3_ST_CW_CHANGE_A;
- s->init_num = 0;
- break;
-
- case SSL3_ST_CW_CHANGE_A:
- case SSL3_ST_CW_CHANGE_B:
- ret = ssl3_send_change_cipher_spec(s,
- SSL3_ST_CW_CHANGE_A,
- SSL3_ST_CW_CHANGE_B);
- if (ret <= 0)
- goto end;
-
-#if defined(OPENSSL_NO_NEXTPROTONEG)
- s->state = SSL3_ST_CW_FINISHED_A;
-#else
- if (s->s3->next_proto_neg_seen)
- s->state = SSL3_ST_CW_NEXT_PROTO_A;
- else
- s->state = SSL3_ST_CW_FINISHED_A;
-#endif
- s->init_num = 0;
-
- s->session->cipher = s->s3->tmp.new_cipher;
-#ifdef OPENSSL_NO_COMP
- s->session->compress_meth = 0;
-#else
- if (s->s3->tmp.new_compression == NULL)
- s->session->compress_meth = 0;
- else
- s->session->compress_meth = s->s3->tmp.new_compression->id;
-#endif
- if (!s->method->ssl3_enc->setup_key_block(s)) {
- ret = -1;
- s->state = SSL_ST_ERR;
- goto end;
- }
-
- if (!s->method->ssl3_enc->change_cipher_state(s,
- SSL3_CHANGE_CIPHER_CLIENT_WRITE))
- {
- ret = -1;
- s->state = SSL_ST_ERR;
- goto end;
- }
-
- break;
-
-#if !defined(OPENSSL_NO_NEXTPROTONEG)
- case SSL3_ST_CW_NEXT_PROTO_A:
- case SSL3_ST_CW_NEXT_PROTO_B:
- ret = ssl3_send_next_proto(s);
- if (ret <= 0)
- goto end;
- s->state = SSL3_ST_CW_FINISHED_A;
- break;
-#endif
-
- case SSL3_ST_CW_FINISHED_A:
- case SSL3_ST_CW_FINISHED_B:
- ret = ssl3_send_finished(s,
- SSL3_ST_CW_FINISHED_A,
- SSL3_ST_CW_FINISHED_B,
- s->method->
- ssl3_enc->client_finished_label,
- s->method->
- ssl3_enc->client_finished_label_len);
- if (ret <= 0)
- goto end;
- s->state = SSL3_ST_CW_FLUSH;
-
- if (s->hit) {
- s->s3->tmp.next_state = SSL_ST_OK;
- } else {
- /*
- * Allow NewSessionTicket if ticket expected
- */
- if (s->tlsext_ticket_expected)
- s->s3->tmp.next_state = SSL3_ST_CR_SESSION_TICKET_A;
- else
- s->s3->tmp.next_state = SSL3_ST_CR_CHANGE_A;
- }
- s->init_num = 0;
- break;
-
- case SSL3_ST_CR_SESSION_TICKET_A:
- case SSL3_ST_CR_SESSION_TICKET_B:
- ret = ssl3_get_new_session_ticket(s);
- if (ret <= 0)
- goto end;
- s->state = SSL3_ST_CR_CHANGE_A;
- s->init_num = 0;
- break;
-
- case SSL3_ST_CR_CERT_STATUS_A:
- case SSL3_ST_CR_CERT_STATUS_B:
- ret = ssl3_get_cert_status(s);
- if (ret <= 0)
- goto end;
- s->state = SSL3_ST_CR_KEY_EXCH_A;
- s->init_num = 0;
- break;
-
- case SSL3_ST_CR_CHANGE_A:
- case SSL3_ST_CR_CHANGE_B:
- ret = ssl3_get_change_cipher_spec(s, SSL3_ST_CR_CHANGE_A,
- SSL3_ST_CR_CHANGE_B);
- if (ret <= 0)
- goto end;
-
- s->state = SSL3_ST_CR_FINISHED_A;
- s->init_num = 0;
- break;
-
- case SSL3_ST_CR_FINISHED_A:
- case SSL3_ST_CR_FINISHED_B:
- ret = ssl3_get_finished(s, SSL3_ST_CR_FINISHED_A,
- SSL3_ST_CR_FINISHED_B);
- if (ret <= 0)
- goto end;
-
- if (s->hit)
- s->state = SSL3_ST_CW_CHANGE_A;
- else
- s->state = SSL_ST_OK;
- s->init_num = 0;
- break;
-
- case SSL3_ST_CW_FLUSH:
- s->rwstate = SSL_WRITING;
- if (BIO_flush(s->wbio) <= 0) {
- ret = -1;
- goto end;
- }
- s->rwstate = SSL_NOTHING;
- s->state = s->s3->tmp.next_state;
- break;
-
- case SSL_ST_OK:
- /* clean a few things up */
- ssl3_cleanup_key_block(s);
- BUF_MEM_free(s->init_buf);
- s->init_buf = NULL;
-
- /* remove the buffering */
- ssl_free_wbio_buffer(s);
-
- s->init_num = 0;
- s->renegotiate = 0;
- s->new_session = 0;
-
- ssl_update_cache(s, SSL_SESS_CACHE_CLIENT);
- if (s->hit)
- s->ctx->stats.sess_hit++;
-
- ret = 1;
- /* s->server=0; */
- s->handshake_func = ssl3_connect;
- s->ctx->stats.sess_connect_good++;
-
- if (cb != NULL)
- cb(s, SSL_CB_HANDSHAKE_DONE, 1);
-
- goto end;
- /* break; */
-
- case SSL_ST_ERR:
- default:
- SSLerr(SSL_F_SSL3_CONNECT, SSL_R_UNKNOWN_STATE);
- ret = -1;
- goto end;
- /* break; */
- }
-
- /* did we do anything */
- if (!s->s3->tmp.reuse_message && !skip) {
- if (s->debug) {
- if ((ret = BIO_flush(s->wbio)) <= 0)
- goto end;
- }
-
- if ((cb != NULL) && (s->state != state)) {
- new_state = s->state;
- s->state = state;
- cb(s, SSL_CB_CONNECT_LOOP, 1);
- s->state = new_state;
- }
- }
- skip = 0;
- }
- end:
- s->in_handshake--;
- BUF_MEM_free(buf);
- if (cb != NULL)
- cb(s, SSL_CB_CONNECT_EXIT, ret);
- return (ret);
-}
-
-#endif /* End temp disabled ssl3_connect */
/*
* Work out what version we should be using for the initial ClientHello if
* the version is currently set to (D)TLS_ANY_VERSION.
return (0);
}
-/*
- * Normally, we can tell if the server is resuming the session from
- * the session ID. EAP-FAST (RFC 4851), however, relies on the next server
- * message after the ServerHello to determine if the server is resuming.
- * Therefore, we allow EAP-FAST to peek ahead.
- * ssl3_check_change returns 1 if we are resuming from an external
- * pre-shared secret, we have a "ticket" and the next server message
- * is CCS; and 0 otherwise. It returns -1 upon an error.
- */
- #if 0
- /*
- * TODO: No longer required. Temporarily kept during state machine development
- * To be deleted by later commits
- */
-static int ssl3_check_change(SSL *s)
-{
- int ok = 0;
-
- if (s->version < TLS1_VERSION || !s->tls_session_secret_cb ||
- !s->session->tlsext_tick)
- return 0;
-
- /*
- * This function is called when we might get a Certificate message instead,
- * so permit appropriate message length.
- * We ignore the return value as we're only interested in the message type
- * and not its length.
- */
- s->method->ssl_get_message(s,
- SSL3_ST_CR_CERT_A,
- SSL3_ST_CR_CERT_B,
- -1, s->max_cert_list, &ok);
-
- if (!ok)
- return -1;
-
- s->s3->tmp.reuse_message = 1;
-
- if (s->s3->tmp.message_type == SSL3_MT_CHANGE_CIPHER_SPEC)
- return 1;
-
- return 0;
-}
-#endif
-
#ifndef OPENSSL_NO_NEXTPROTONEG
int ssl3_send_next_proto(SSL *s)
{
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