/*
- * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
#include <stdio.h>
#include <limits.h>
#include <errno.h>
-#define USE_SOCKETS
#include "../ssl_locl.h"
#include <openssl/evp.h>
#include <openssl/buffer.h>
{
const unsigned char *buf = buf_;
size_t tot;
- size_t n, split_send_fragment, maxpipes;
+ size_t n, max_send_fragment, split_send_fragment, maxpipes;
#if !defined(OPENSSL_NO_MULTIBLOCK) && EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK
- size_t max_send_fragment, nw;
+ size_t nw;
#endif
SSL3_BUFFER *wb = &s->rlayer.wbuf[0];
int i;
tot = s->rlayer.wnum;
/*
* ensure that if we end up with a smaller value of data to write out
- * than the the original len from a write which didn't complete for
+ * than the original len from a write which didn't complete for
* non-blocking I/O and also somehow ended up avoiding the check for
* this in ssl3_write_pending/SSL_R_BAD_WRITE_RETRY as it must never be
* possible to end up with (len-tot) as a large number that will then
* promptly send beyond the end of the users buffer ... so we trap and
* report the error in a way the user will notice
*/
- if ((len < s->rlayer.wnum)
+ if ((len < s->rlayer.wnum)
|| ((wb->left != 0) && (len < (s->rlayer.wnum + s->rlayer.wpend_tot)))) {
SSLerr(SSL_F_SSL3_WRITE_BYTES, SSL_R_BAD_LENGTH);
return -1;
* compromise is considered worthy.
*/
if (type == SSL3_RT_APPLICATION_DATA &&
- len >= 4 * (max_send_fragment = s->max_send_fragment) &&
+ len >= 4 * (max_send_fragment = ssl_get_max_send_fragment(s)) &&
s->compress == NULL && s->msg_callback == NULL &&
!SSL_WRITE_ETM(s) && SSL_USE_EXPLICIT_IV(s) &&
EVP_CIPHER_flags(EVP_CIPHER_CTX_cipher(s->enc_write_ctx)) &
tot += tmpwrit;
}
} else
-#endif
+#endif /* !defined(OPENSSL_NO_MULTIBLOCK) && EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK */
if (tot == len) { /* done? */
if (s->mode & SSL_MODE_RELEASE_BUFFERS && !SSL_IS_DTLS(s))
ssl3_release_write_buffer(s);
n = (len - tot);
- split_send_fragment = s->split_send_fragment;
+ max_send_fragment = ssl_get_max_send_fragment(s);
+ split_send_fragment = ssl_get_split_send_fragment(s);
/*
* If max_pipelines is 0 then this means "undefined" and we default to
* 1 pipeline. Similarly if the cipher does not support pipelined
& EVP_CIPH_FLAG_PIPELINE)
|| !SSL_USE_EXPLICIT_IV(s))
maxpipes = 1;
- if (s->max_send_fragment == 0 || split_send_fragment > s->max_send_fragment
- || split_send_fragment == 0) {
+ if (max_send_fragment == 0 || split_send_fragment == 0
+ || split_send_fragment > max_send_fragment) {
/*
- * We should have prevented this when we set the split and max send
+ * We should have prevented this when we set/get the split and max send
* fragments so we shouldn't get here
*/
SSLerr(SSL_F_SSL3_WRITE_BYTES, ERR_R_INTERNAL_ERROR);
if (numpipes > maxpipes)
numpipes = maxpipes;
- if (n / numpipes >= s->max_send_fragment) {
+ if (n / numpipes >= max_send_fragment) {
/*
* We have enough data to completely fill all available
* pipelines
*/
for (j = 0; j < numpipes; j++) {
- pipelens[j] = s->max_send_fragment;
+ pipelens[j] = max_send_fragment;
}
} else {
/* We can partially fill all available pipelines */
if (s->s3->alert_dispatch) {
i = s->method->ssl_dispatch_alert(s);
if (i <= 0)
- return (i);
+ return i;
/* if it went, fall through and send more stuff */
}
totlen = 0;
/* Clear our SSL3_RECORD structures */
- memset(wr, 0, sizeof wr);
+ memset(wr, 0, sizeof(wr));
for (j = 0; j < numpipes; j++) {
unsigned int version = SSL_TREAT_AS_TLS13(s) ? TLS1_VERSION : s->version;
unsigned char *compressdata = NULL;
/* first we compress */
if (s->compress != NULL) {
- /*
- * TODO(TLS1.3): Make sure we prevent compression!!!
- */
if (!ssl3_do_compress(s, thiswr)
|| !WPACKET_allocate_bytes(thispkt, thiswr->length, NULL)) {
SSLerr(SSL_F_DO_SSL3_WRITE, SSL_R_COMPRESSION_FAILURE);
}
if (SSL_TREAT_AS_TLS13(s) && s->enc_write_ctx != NULL) {
- size_t rlen;
+ size_t rlen, max_send_fragment;
if (!WPACKET_put_bytes_u8(thispkt, type)) {
SSLerr(SSL_F_DO_SSL3_WRITE, ERR_R_INTERNAL_ERROR);
SSL3_RECORD_add_length(thiswr, 1);
/* Add TLS1.3 padding */
+ max_send_fragment = ssl_get_max_send_fragment(s);
rlen = SSL3_RECORD_get_length(thiswr);
- if (rlen < SSL3_RT_MAX_PLAIN_LENGTH) {
+ if (rlen < max_send_fragment) {
size_t padding = 0;
- size_t max_padding = SSL3_RT_MAX_PLAIN_LENGTH - rlen;
+ size_t max_padding = max_send_fragment - rlen;
if (s->record_padding_cb != NULL) {
padding = s->record_padding_cb(s, type, rlen, s->record_padding_arg);
} else if (s->block_padding > 0) {
* This will be at most one cipher block or the tag length if using
* AEAD. SSL_RT_MAX_CIPHER_BLOCK_SIZE covers either case.
*/
- if(!WPACKET_reserve_bytes(thispkt, SSL_RT_MAX_CIPHER_BLOCK_SIZE,
- NULL)
+ if (!WPACKET_reserve_bytes(thispkt, SSL_RT_MAX_CIPHER_BLOCK_SIZE,
+ NULL)
/*
* We also need next the amount of bytes written to this
* sub-packet
|| s->early_data_state == SSL_EARLY_DATA_WRITE_RETRY) {
/*
* We haven't actually negotiated the version yet, but we're trying to
- * send early data - so we need to use the the tls13enc function.
+ * send early data - so we need to use the tls13enc function.
*/
if (tls13_enc(s, wr, numpipes, 1) < 1)
goto err;
*/
SSL3_BUFFER_set_left(&wb[currbuf], 0);
}
- return (i);
+ return i;
}
SSL3_BUFFER_add_offset(&wb[currbuf], tmpwrit);
SSL3_BUFFER_sub_left(&wb[currbuf], tmpwrit);
if (recvd_type != NULL)
*recvd_type = SSL3_RECORD_get_type(rr);
- if (len == 0)
+ if (len == 0) {
+ /*
+ * Mark a zero length record as read. This ensures multiple calls to
+ * SSL_read() with a zero length buffer will eventually cause
+ * SSL_pending() to report data as being available.
+ */
+ if (SSL3_RECORD_get_length(rr) == 0)
+ SSL3_RECORD_set_read(rr);
return 0;
+ }
totalbytes = 0;
do {
size_t *dest_len = NULL;
if (SSL3_RECORD_get_type(rr) == SSL3_RT_HANDSHAKE) {
- dest_maxlen = sizeof s->rlayer.handshake_fragment;
+ dest_maxlen = sizeof(s->rlayer.handshake_fragment);
dest = s->rlayer.handshake_fragment;
dest_len = &s->rlayer.handshake_fragment_len;
}
memcpy(dest + *dest_len,
SSL3_RECORD_get_data(rr) + SSL3_RECORD_get_off(rr), n);
SSL3_RECORD_add_off(rr, n);
- SSL3_RECORD_add_length(rr, -n);
+ SSL3_RECORD_sub_length(rr, n);
*dest_len += n;
if (SSL3_RECORD_get_length(rr) == 0)
SSL3_RECORD_set_read(rr);
*/
if (s->server &&
SSL_is_init_finished(s) &&
- !s->s3->send_connection_binding &&
(s->version > SSL3_VERSION) &&
!SSL_IS_TLS13(s) &&
+ (SSL3_RECORD_get_type(rr) == SSL3_RT_HANDSHAKE) &&
(s->rlayer.handshake_fragment_len >= 4) &&
(s->rlayer.handshake_fragment[0] == SSL3_MT_CLIENT_HELLO) &&
(s->session != NULL) && (s->session->cipher != NULL) &&
- !(s->ctx->options & SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION)) {
+ ((!s->s3->send_connection_binding &&
+ !(s->options & SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION)) ||
+ (s->options & SSL_OP_NO_RENEGOTIATION))) {
SSL3_RECORD_set_length(rr, 0);
SSL3_RECORD_set_read(rr);
ssl3_send_alert(s, SSL3_AL_WARNING, SSL_AD_NO_RENEGOTIATION);
s->rwstate = SSL_NOTHING;
s->s3->fatal_alert = alert_descr;
SSLerr(SSL_F_SSL3_READ_BYTES, SSL_AD_REASON_OFFSET + alert_descr);
- BIO_snprintf(tmp, sizeof tmp, "%d", alert_descr);
+ BIO_snprintf(tmp, sizeof(tmp), "%d", alert_descr);
ERR_add_error_data(2, "SSL alert number ", tmp);
s->shutdown |= SSL_RECEIVED_SHUTDOWN;
SSL3_RECORD_set_read(rr);
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