return (0);
}
-int ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen)
+int tls_construct_finished(SSL *s, const char *sender, int slen)
{
unsigned char *p;
int i;
unsigned long l;
- if (s->state == a) {
- p = ssl_handshake_start(s);
+ p = ssl_handshake_start(s);
- i = s->method->ssl3_enc->final_finish_mac(s,
- sender, slen,
- s->s3->tmp.finish_md);
- if (i == 0)
- return 0;
- s->s3->tmp.finish_md_len = i;
- memcpy(p, s->s3->tmp.finish_md, i);
- l = i;
+ i = s->method->ssl3_enc->final_finish_mac(s,
+ sender, slen,
+ s->s3->tmp.finish_md);
+ if (i <= 0)
+ return 0;
+ s->s3->tmp.finish_md_len = i;
+ memcpy(p, s->s3->tmp.finish_md, i);
+ l = i;
- /*
- * Copy the finished so we can use it for renegotiation checks
- */
- if (s->type == SSL_ST_CONNECT) {
- OPENSSL_assert(i <= EVP_MAX_MD_SIZE);
- memcpy(s->s3->previous_client_finished, s->s3->tmp.finish_md, i);
- s->s3->previous_client_finished_len = i;
- } else {
- OPENSSL_assert(i <= EVP_MAX_MD_SIZE);
- memcpy(s->s3->previous_server_finished, s->s3->tmp.finish_md, i);
- s->s3->previous_server_finished_len = i;
- }
+ /*
+ * Copy the finished so we can use it for renegotiation checks
+ */
+ if (!s->server) {
+ OPENSSL_assert(i <= EVP_MAX_MD_SIZE);
+ memcpy(s->s3->previous_client_finished, s->s3->tmp.finish_md, i);
+ s->s3->previous_client_finished_len = i;
+ } else {
+ OPENSSL_assert(i <= EVP_MAX_MD_SIZE);
+ memcpy(s->s3->previous_server_finished, s->s3->tmp.finish_md, i);
+ s->s3->previous_server_finished_len = i;
+ }
- if(!ssl_set_handshake_header(s, SSL3_MT_FINISHED, l)) {
- SSLerr(SSL_F_SSL3_SEND_FINISHED, ERR_R_INTERNAL_ERROR);
- return -1;
- }
- s->state = b;
+ if (!ssl_set_handshake_header(s, SSL3_MT_FINISHED, l)) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_FINISHED, ERR_R_INTERNAL_ERROR);
+ return 0;
}
- /* SSL3_ST_SEND_xxxxxx_HELLO_B */
- return ssl_do_write(s);
+ return 1;
}
#ifndef OPENSSL_NO_NEXTPROTONEG
*/
if (s->s3->tmp.new_cipher == NULL)
return;
- if (s->state & SSL_ST_CONNECT) {
+ if (!s->server) {
sender = s->method->ssl3_enc->server_finished_label;
slen = s->method->ssl3_enc->server_finished_label_len;
} else {
}
#endif
-int ssl3_get_finished(SSL *s, int a, int b)
+enum MSG_PROCESS_RETURN tls_process_change_cipher_spec(SSL *s, long n)
{
- int al, i, ok;
- long n;
- unsigned char *p;
+ int al;
-#ifdef OPENSSL_NO_NEXTPROTONEG
/*
- * the mac has already been generated when we received the change cipher
- * spec message and is in s->s3->tmp.peer_finish_md
+ * 'Change Cipher Spec' is just a single byte, which should already have
+ * been consumed by ssl_get_message() so there should be no bytes left,
+ * unless we're using DTLS1_BAD_VER, which has an extra 2 bytes
*/
+ if (SSL_IS_DTLS(s)) {
+ if ((s->version == DTLS1_BAD_VER && n != DTLS1_CCS_HEADER_LENGTH + 1)
+ || (s->version != DTLS1_BAD_VER
+ && n != DTLS1_CCS_HEADER_LENGTH - 1)) {
+ al = SSL_AD_ILLEGAL_PARAMETER;
+ SSLerr(SSL_F_TLS_PROCESS_CHANGE_CIPHER_SPEC,
+ SSL_R_BAD_CHANGE_CIPHER_SPEC);
+ goto f_err;
+ }
+ } else {
+ if (n != 0) {
+ al = SSL_AD_ILLEGAL_PARAMETER;
+ SSLerr(SSL_F_TLS_PROCESS_CHANGE_CIPHER_SPEC,
+ SSL_R_BAD_CHANGE_CIPHER_SPEC);
+ goto f_err;
+ }
+ }
+
+ /* Check we have a cipher to change to */
+ if (s->s3->tmp.new_cipher == NULL) {
+ al = SSL_AD_UNEXPECTED_MESSAGE;
+ SSLerr(SSL_F_TLS_PROCESS_CHANGE_CIPHER_SPEC, SSL_R_CCS_RECEIVED_EARLY);
+ goto f_err;
+ }
+
+ s->s3->change_cipher_spec = 1;
+ if (!ssl3_do_change_cipher_spec(s)) {
+ al = SSL_AD_INTERNAL_ERROR;
+ SSLerr(SSL_F_TLS_PROCESS_CHANGE_CIPHER_SPEC, ERR_R_INTERNAL_ERROR);
+ goto f_err;
+ }
+
+ if (SSL_IS_DTLS(s)) {
+ 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
+ }
- /* 64 argument should actually be 36+4 :-) */
- n = s->method->ssl_get_message(s, a, b, SSL3_MT_FINISHED, 64, &ok);
+ return MSG_PROCESS_CONTINUE_READING;
+ f_err:
+ ssl3_send_alert(s, SSL3_AL_FATAL, al);
+ statem_set_error(s);
+ return MSG_PROCESS_ERROR;
+}
- if (!ok)
- return ((int)n);
+enum MSG_PROCESS_RETURN tls_process_finished(SSL *s, unsigned long n)
+{
+ int al, i;
+ unsigned char *p;
/* If this occurs, we have missed a message */
if (!s->s3->change_cipher_spec) {
al = SSL_AD_UNEXPECTED_MESSAGE;
- SSLerr(SSL_F_SSL3_GET_FINISHED, SSL_R_GOT_A_FIN_BEFORE_A_CCS);
+ SSLerr(SSL_F_TLS_PROCESS_FINISHED, SSL_R_GOT_A_FIN_BEFORE_A_CCS);
goto f_err;
}
s->s3->change_cipher_spec = 0;
p = (unsigned char *)s->init_msg;
i = s->s3->tmp.peer_finish_md_len;
- if (i != n) {
+ if (i < 0 || (unsigned long)i != n) {
al = SSL_AD_DECODE_ERROR;
- SSLerr(SSL_F_SSL3_GET_FINISHED, SSL_R_BAD_DIGEST_LENGTH);
+ SSLerr(SSL_F_TLS_PROCESS_FINISHED, SSL_R_BAD_DIGEST_LENGTH);
goto f_err;
}
if (CRYPTO_memcmp(p, s->s3->tmp.peer_finish_md, i) != 0) {
al = SSL_AD_DECRYPT_ERROR;
- SSLerr(SSL_F_SSL3_GET_FINISHED, SSL_R_DIGEST_CHECK_FAILED);
+ SSLerr(SSL_F_TLS_PROCESS_FINISHED, SSL_R_DIGEST_CHECK_FAILED);
goto f_err;
}
/*
* Copy the finished so we can use it for renegotiation checks
*/
- if (s->type == SSL_ST_ACCEPT) {
+ if (s->server) {
OPENSSL_assert(i <= EVP_MAX_MD_SIZE);
memcpy(s->s3->previous_client_finished, s->s3->tmp.peer_finish_md, i);
s->s3->previous_client_finished_len = i;
s->s3->previous_server_finished_len = i;
}
- return (1);
+ return MSG_PROCESS_CONTINUE_PROCESSING;
f_err:
ssl3_send_alert(s, SSL3_AL_FATAL, al);
- return (0);
+ statem_set_error(s);
+ return MSG_PROCESS_ERROR;
}
-/*-
- * for these 2 messages, we need to
- * ssl->enc_read_ctx re-init
- * ssl->s3->read_sequence zero
- * ssl->s3->read_mac_secret re-init
- * ssl->session->read_sym_enc assign
- * ssl->session->read_compression assign
- * ssl->session->read_hash assign
- */
-int ssl3_send_change_cipher_spec(SSL *s, int a, int b)
+int tls_construct_change_cipher_spec(SSL *s)
{
unsigned char *p;
- if (s->state == a) {
- p = (unsigned char *)s->init_buf->data;
- *p = SSL3_MT_CCS;
- s->init_num = 1;
- s->init_off = 0;
-
- s->state = b;
- }
+ p = (unsigned char *)s->init_buf->data;
+ *p = SSL3_MT_CCS;
+ s->init_num = 1;
+ s->init_off = 0;
- /* SSL3_ST_CW_CHANGE_B */
- return (ssl3_do_write(s, SSL3_RT_CHANGE_CIPHER_SPEC));
+ return 1;
}
unsigned long ssl3_output_cert_chain(SSL *s, CERT_PKEY *cpk)
l2n3(l, p);
l += 3;
- if(!ssl_set_handshake_header(s, SSL3_MT_CERTIFICATE, l)) {
+ if (!ssl_set_handshake_header(s, SSL3_MT_CERTIFICATE, l)) {
SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN, ERR_R_INTERNAL_ERROR);
return 0;
}
return l + SSL_HM_HEADER_LENGTH(s);
}
-/*
- * Obtain handshake message of message type 'mt' (any if mt == -1), maximum
- * acceptable body length 'max'. The first four bytes (msg_type and length)
- * are read in state 'st1', the body is read in state 'stn'.
- */
-long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok)
+enum WORK_STATE tls_finish_handshake(SSL *s, enum WORK_STATE wst)
{
- unsigned char *p;
- unsigned long l;
- long n;
- int i, al;
+ void (*cb) (const SSL *ssl, int type, int val) = NULL;
+
+#ifndef OPENSSL_NO_SCTP
+ if (SSL_IS_DTLS(s) && BIO_dgram_is_sctp(SSL_get_wbio(s))) {
+ enum WORK_STATE ret;
+ ret = dtls_wait_for_dry(s);
+ if (ret != WORK_FINISHED_CONTINUE)
+ return ret;
+ }
+#endif
- if (s->s3->tmp.reuse_message) {
- s->s3->tmp.reuse_message = 0;
- if ((mt >= 0) && (s->s3->tmp.message_type != mt)) {
- al = SSL_AD_UNEXPECTED_MESSAGE;
- SSLerr(SSL_F_SSL3_GET_MESSAGE, SSL_R_UNEXPECTED_MESSAGE);
- goto f_err;
+ /* clean a few things up */
+ ssl3_cleanup_key_block(s);
+
+ if (!SSL_IS_DTLS(s)) {
+ /*
+ * We don't do this in DTLS because we may still need the init_buf
+ * in case there are any unexpected retransmits
+ */
+ BUF_MEM_free(s->init_buf);
+ s->init_buf = NULL;
+ }
+
+ ssl_free_wbio_buffer(s);
+
+ s->init_num = 0;
+
+ if (!s->server || s->renegotiate == 2) {
+ /* skipped if we just sent a HelloRequest */
+ s->renegotiate = 0;
+ s->new_session = 0;
+
+ if (s->server) {
+ s->renegotiate = 0;
+ s->new_session = 0;
+
+ ssl_update_cache(s, SSL_SESS_CACHE_SERVER);
+
+ s->ctx->stats.sess_accept_good++;
+ s->handshake_func = ssl3_accept;
+ } else {
+ ssl_update_cache(s, SSL_SESS_CACHE_CLIENT);
+ if (s->hit)
+ s->ctx->stats.sess_hit++;
+
+ s->handshake_func = ssl3_connect;
+ s->ctx->stats.sess_connect_good++;
+ }
+
+ if (s->info_callback != NULL)
+ cb = s->info_callback;
+ else if (s->ctx->info_callback != NULL)
+ cb = s->ctx->info_callback;
+
+ if (cb != NULL)
+ cb(s, SSL_CB_HANDSHAKE_DONE, 1);
+
+ if (SSL_IS_DTLS(s)) {
+ /* done with handshaking */
+ s->d1->handshake_read_seq = 0;
+ s->d1->handshake_write_seq = 0;
+ s->d1->next_handshake_write_seq = 0;
}
- *ok = 1;
- s->state = stn;
- s->init_msg = s->init_buf->data + 4;
- s->init_num = (int)s->s3->tmp.message_size;
- return s->init_num;
}
+ return WORK_FINISHED_STOP;
+}
+
+int tls_get_message_header(SSL *s, int *mt)
+{
+ /* s->init_num < SSL3_HM_HEADER_LENGTH */
+ int skip_message, i, recvd_type, al;
+ unsigned char *p;
+ unsigned long l;
+
p = (unsigned char *)s->init_buf->data;
- if (s->state == st1) { /* s->init_num < 4 */
- int skip_message;
-
- do {
- while (s->init_num < 4) {
- i = s->method->ssl_read_bytes(s, SSL3_RT_HANDSHAKE,
- &p[s->init_num],
- 4 - s->init_num, 0);
- if (i <= 0) {
- s->rwstate = SSL_READING;
- *ok = 0;
- return i;
- }
- s->init_num += i;
+ do {
+ while (s->init_num < SSL3_HM_HEADER_LENGTH) {
+ i = s->method->ssl_read_bytes(s, SSL3_RT_HANDSHAKE, &recvd_type,
+ &p[s->init_num], SSL3_HM_HEADER_LENGTH - s->init_num, 0);
+ if (i <= 0) {
+ s->rwstate = SSL_READING;
+ return 0;
}
-
- skip_message = 0;
- if (!s->server)
- if (p[0] == SSL3_MT_HELLO_REQUEST)
- /*
- * The server may always send 'Hello Request' messages --
- * we are doing a handshake anyway now, so ignore them if
- * their format is correct. Does not count for 'Finished'
- * MAC.
- */
- if (p[1] == 0 && p[2] == 0 && p[3] == 0) {
- s->init_num = 0;
- skip_message = 1;
-
- if (s->msg_callback)
- s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE,
- p, 4, s, s->msg_callback_arg);
- }
+ if (recvd_type == SSL3_RT_CHANGE_CIPHER_SPEC) {
+ s->s3->tmp.message_type = *mt = SSL3_MT_CHANGE_CIPHER_SPEC;
+ s->init_num = i - 1;
+ s->s3->tmp.message_size = i;
+ return 1;
+ } else if (recvd_type != SSL3_RT_HANDSHAKE) {
+ al = SSL_AD_UNEXPECTED_MESSAGE;
+ SSLerr(SSL_F_TLS_GET_MESSAGE_HEADER, SSL_R_CCS_RECEIVED_EARLY);
+ goto f_err;
+ }
+ s->init_num += i;
}
- while (skip_message);
- /* s->init_num == 4 */
+ skip_message = 0;
+ if (!s->server)
+ if (p[0] == SSL3_MT_HELLO_REQUEST)
+ /*
+ * The server may always send 'Hello Request' messages --
+ * we are doing a handshake anyway now, so ignore them if
+ * their format is correct. Does not count for 'Finished'
+ * MAC.
+ */
+ if (p[1] == 0 && p[2] == 0 && p[3] == 0) {
+ s->init_num = 0;
+ skip_message = 1;
+
+ if (s->msg_callback)
+ s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE,
+ p, SSL3_HM_HEADER_LENGTH, s,
+ s->msg_callback_arg);
+ }
+ } while (skip_message);
+ /* s->init_num == SSL3_HM_HEADER_LENGTH */
- if ((mt >= 0) && (*p != mt)) {
- al = SSL_AD_UNEXPECTED_MESSAGE;
- SSLerr(SSL_F_SSL3_GET_MESSAGE, SSL_R_UNEXPECTED_MESSAGE);
- goto f_err;
- }
+ *mt = *p;
+ s->s3->tmp.message_type = *(p++);
- s->s3->tmp.message_type = *(p++);
+ if(RECORD_LAYER_is_sslv2_record(&s->rlayer)) {
+ /*
+ * Only happens with SSLv3+ in an SSLv2 backward compatible
+ * ClientHello
+ */
+ /*
+ * Total message size is the remaining record bytes to read
+ * plus the SSL3_HM_HEADER_LENGTH bytes that we already read
+ */
+ l = RECORD_LAYER_get_rrec_length(&s->rlayer)
+ + SSL3_HM_HEADER_LENGTH;
+ if (l && !BUF_MEM_grow_clean(s->init_buf, (int)l)) {
+ SSLerr(SSL_F_TLS_GET_MESSAGE_HEADER, ERR_R_BUF_LIB);
+ goto err;
+ }
+ s->s3->tmp.message_size = l;
+ s->init_msg = s->init_buf->data;
+ s->init_num = SSL3_HM_HEADER_LENGTH;
+ } else {
n2l3(p, l);
- if (l > (unsigned long)max) {
- al = SSL_AD_ILLEGAL_PARAMETER;
- SSLerr(SSL_F_SSL3_GET_MESSAGE, SSL_R_EXCESSIVE_MESSAGE_SIZE);
- goto f_err;
- }
- if (l > (INT_MAX - 4)) { /* BUF_MEM_grow takes an 'int' parameter */
+ /* BUF_MEM_grow takes an 'int' parameter */
+ if (l > (INT_MAX - SSL3_HM_HEADER_LENGTH)) {
al = SSL_AD_ILLEGAL_PARAMETER;
- SSLerr(SSL_F_SSL3_GET_MESSAGE, SSL_R_EXCESSIVE_MESSAGE_SIZE);
+ SSLerr(SSL_F_TLS_GET_MESSAGE_HEADER, SSL_R_EXCESSIVE_MESSAGE_SIZE);
goto f_err;
}
- if (l && !BUF_MEM_grow_clean(s->init_buf, (int)l + 4)) {
- SSLerr(SSL_F_SSL3_GET_MESSAGE, ERR_R_BUF_LIB);
+ if (l && !BUF_MEM_grow_clean(s->init_buf,
+ (int)l + SSL3_HM_HEADER_LENGTH)) {
+ SSLerr(SSL_F_TLS_GET_MESSAGE_HEADER, ERR_R_BUF_LIB);
goto err;
}
s->s3->tmp.message_size = l;
- s->state = stn;
- s->init_msg = s->init_buf->data + 4;
+ s->init_msg = s->init_buf->data + SSL3_HM_HEADER_LENGTH;
s->init_num = 0;
}
- /* next state (stn) */
+ return 1;
+ f_err:
+ ssl3_send_alert(s, SSL3_AL_FATAL, al);
+ err:
+ return 0;
+}
+
+int tls_get_message_body(SSL *s, unsigned long *len)
+{
+ long n;
+ unsigned char *p;
+ int i;
+
+ if (s->s3->tmp.message_type == SSL3_MT_CHANGE_CIPHER_SPEC) {
+ /* We've already read everything in */
+ *len = (unsigned long)s->init_num;
+ return 1;
+ }
+
p = s->init_msg;
n = s->s3->tmp.message_size - s->init_num;
while (n > 0) {
- i = s->method->ssl_read_bytes(s, SSL3_RT_HANDSHAKE, &p[s->init_num],
- n, 0);
+ i = s->method->ssl_read_bytes(s, SSL3_RT_HANDSHAKE, NULL,
+ &p[s->init_num], n, 0);
if (i <= 0) {
s->rwstate = SSL_READING;
- *ok = 0;
- return i;
+ *len = 0;
+ return 0;
}
s->init_num += i;
n -= i;
#endif
/* Feed this message into MAC computation. */
- ssl3_finish_mac(s, (unsigned char *)s->init_buf->data, s->init_num + 4);
- if (s->msg_callback)
- s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, s->init_buf->data,
- (size_t)s->init_num + 4, s, s->msg_callback_arg);
- *ok = 1;
- return s->init_num;
- f_err:
- ssl3_send_alert(s, SSL3_AL_FATAL, al);
- err:
- *ok = 0;
- return (-1);
+ if(RECORD_LAYER_is_sslv2_record(&s->rlayer)) {
+ ssl3_finish_mac(s, (unsigned char *)s->init_buf->data, s->init_num);
+ if (s->msg_callback)
+ s->msg_callback(0, SSL2_VERSION, 0, s->init_buf->data,
+ (size_t)s->init_num, s, s->msg_callback_arg);
+ } else {
+ ssl3_finish_mac(s, (unsigned char *)s->init_buf->data,
+ s->init_num + SSL3_HM_HEADER_LENGTH);
+ if (s->msg_callback)
+ s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, s->init_buf->data,
+ (size_t)s->init_num + SSL3_HM_HEADER_LENGTH, s,
+ s->msg_callback_arg);
+ }
+
+ /*
+ * init_num should never be negative...should probably be declared
+ * unsigned
+ */
+ if (s->init_num < 0) {
+ SSLerr(SSL_F_TLS_GET_MESSAGE_BODY, ERR_R_INTERNAL_ERROR);
+ ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+ *len = 0;
+ return 0;
+ }
+ *len = (unsigned long)s->init_num;
+ return 1;
}
int ssl_cert_type(X509 *x, EVP_PKEY *pkey)
ret = SSL_PKEY_ECC;
}
#endif
- else if (i == NID_id_GostR3410_94 || i == NID_id_GostR3410_94_cc) {
- ret = SSL_PKEY_GOST94;
- } else if (i == NID_id_GostR3410_2001 || i == NID_id_GostR3410_2001_cc) {
+ else if (i == NID_id_GostR3410_2001) {
ret = SSL_PKEY_GOST01;
} else if (x && (i == EVP_PKEY_DH || i == EVP_PKEY_DHX)) {
/*
projects / openssl.git / blobdiff