early-access version 2698
This commit is contained in:
120
externals/libressl/ssl/d1_lib.c
vendored
120
externals/libressl/ssl/d1_lib.c
vendored
@@ -1,4 +1,4 @@
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/* $OpenBSD: d1_lib.c,v 1.50 2020/09/26 14:43:17 jsing Exp $ */
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/* $OpenBSD: d1_lib.c,v 1.61 2021/10/23 13:36:03 jsing Exp $ */
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/*
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* DTLS implementation written by Nagendra Modadugu
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* (nagendra@cs.stanford.edu) for the OpenSSL project 2005.
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@@ -67,6 +67,7 @@
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#include <openssl/objects.h>
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#include "dtls_locl.h"
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#include "pqueue.h"
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#include "ssl_locl.h"
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@@ -74,10 +75,6 @@ void dtls1_hm_fragment_free(hm_fragment *frag);
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static int dtls1_listen(SSL *s, struct sockaddr *client);
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SSL3_ENC_METHOD DTLSv1_enc_data = {
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.enc_flags = SSL_ENC_FLAG_EXPLICIT_IV,
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};
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int
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dtls1_new(SSL *s)
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{
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@@ -86,24 +83,20 @@ dtls1_new(SSL *s)
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if ((s->d1 = calloc(1, sizeof(*s->d1))) == NULL)
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goto err;
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if ((s->d1->internal = calloc(1, sizeof(*s->d1->internal))) == NULL)
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goto err;
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if ((s->d1->internal->unprocessed_rcds.q = pqueue_new()) == NULL)
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if ((s->d1->unprocessed_rcds.q = pqueue_new()) == NULL)
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goto err;
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if ((s->d1->internal->processed_rcds.q = pqueue_new()) == NULL)
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goto err;
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if ((s->d1->internal->buffered_messages = pqueue_new()) == NULL)
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if ((s->d1->buffered_messages = pqueue_new()) == NULL)
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goto err;
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if ((s->d1->sent_messages = pqueue_new()) == NULL)
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goto err;
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if ((s->d1->internal->buffered_app_data.q = pqueue_new()) == NULL)
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if ((s->d1->buffered_app_data.q = pqueue_new()) == NULL)
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goto err;
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if (s->server)
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s->d1->internal->cookie_len = sizeof(D1I(s)->cookie);
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s->d1->cookie_len = sizeof(s->d1->cookie);
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s->method->internal->ssl_clear(s);
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s->method->ssl_clear(s);
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return (1);
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err:
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@@ -145,11 +138,10 @@ dtls1_drain_fragments(pqueue queue)
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static void
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dtls1_clear_queues(SSL *s)
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{
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dtls1_drain_records(D1I(s)->unprocessed_rcds.q);
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dtls1_drain_records(D1I(s)->processed_rcds.q);
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dtls1_drain_fragments(D1I(s)->buffered_messages);
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dtls1_drain_records(s->d1->unprocessed_rcds.q);
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dtls1_drain_fragments(s->d1->buffered_messages);
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dtls1_drain_fragments(s->d1->sent_messages);
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dtls1_drain_records(D1I(s)->buffered_app_data.q);
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dtls1_drain_records(s->d1->buffered_app_data.q);
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}
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void
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@@ -160,59 +152,55 @@ dtls1_free(SSL *s)
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ssl3_free(s);
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if (s->d1 == NULL)
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return;
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dtls1_clear_queues(s);
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pqueue_free(D1I(s)->unprocessed_rcds.q);
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pqueue_free(D1I(s)->processed_rcds.q);
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pqueue_free(D1I(s)->buffered_messages);
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pqueue_free(s->d1->unprocessed_rcds.q);
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pqueue_free(s->d1->buffered_messages);
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pqueue_free(s->d1->sent_messages);
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pqueue_free(D1I(s)->buffered_app_data.q);
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pqueue_free(s->d1->buffered_app_data.q);
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freezero(s->d1->internal, sizeof(*s->d1->internal));
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freezero(s->d1, sizeof(*s->d1));
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s->d1 = NULL;
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}
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void
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dtls1_clear(SSL *s)
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{
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struct dtls1_state_internal_st *internal;
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pqueue unprocessed_rcds;
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pqueue processed_rcds;
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pqueue buffered_messages;
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pqueue sent_messages;
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pqueue buffered_app_data;
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unsigned int mtu;
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if (s->d1) {
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unprocessed_rcds = D1I(s)->unprocessed_rcds.q;
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processed_rcds = D1I(s)->processed_rcds.q;
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buffered_messages = D1I(s)->buffered_messages;
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unprocessed_rcds = s->d1->unprocessed_rcds.q;
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buffered_messages = s->d1->buffered_messages;
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sent_messages = s->d1->sent_messages;
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buffered_app_data = D1I(s)->buffered_app_data.q;
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mtu = D1I(s)->mtu;
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buffered_app_data = s->d1->buffered_app_data.q;
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mtu = s->d1->mtu;
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dtls1_clear_queues(s);
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memset(s->d1->internal, 0, sizeof(*s->d1->internal));
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internal = s->d1->internal;
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memset(s->d1, 0, sizeof(*s->d1));
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s->d1->internal = internal;
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s->d1->unprocessed_rcds.epoch =
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tls12_record_layer_read_epoch(s->internal->rl) + 1;
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if (s->server) {
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D1I(s)->cookie_len = sizeof(D1I(s)->cookie);
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s->d1->cookie_len = sizeof(s->d1->cookie);
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}
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if (SSL_get_options(s) & SSL_OP_NO_QUERY_MTU) {
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D1I(s)->mtu = mtu;
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s->d1->mtu = mtu;
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}
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D1I(s)->unprocessed_rcds.q = unprocessed_rcds;
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D1I(s)->processed_rcds.q = processed_rcds;
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D1I(s)->buffered_messages = buffered_messages;
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s->d1->unprocessed_rcds.q = unprocessed_rcds;
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s->d1->buffered_messages = buffered_messages;
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s->d1->sent_messages = sent_messages;
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D1I(s)->buffered_app_data.q = buffered_app_data;
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s->d1->buffered_app_data.q = buffered_app_data;
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}
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ssl3_clear(s);
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@@ -255,14 +243,15 @@ dtls1_ctrl(SSL *s, int cmd, long larg, void *parg)
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const SSL_CIPHER *
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dtls1_get_cipher(unsigned int u)
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{
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const SSL_CIPHER *ciph = ssl3_get_cipher(u);
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const SSL_CIPHER *cipher;
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if (ciph != NULL) {
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if (ciph->algorithm_enc == SSL_RC4)
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return NULL;
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}
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if ((cipher = ssl3_get_cipher(u)) == NULL)
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return NULL;
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return ciph;
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if (cipher->algorithm_enc == SSL_RC4)
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return NULL;
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return cipher;
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}
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void
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@@ -357,7 +346,7 @@ void
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dtls1_stop_timer(SSL *s)
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{
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/* Reset everything */
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memset(&(D1I(s)->timeout), 0, sizeof(struct dtls1_timeout_st));
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memset(&(s->d1->timeout), 0, sizeof(struct dtls1_timeout_st));
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memset(&(s->d1->next_timeout), 0, sizeof(struct timeval));
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s->d1->timeout_duration = 1;
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BIO_ctrl(SSL_get_rbio(s), BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT, 0,
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@@ -369,16 +358,16 @@ dtls1_stop_timer(SSL *s)
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int
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dtls1_check_timeout_num(SSL *s)
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{
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D1I(s)->timeout.num_alerts++;
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s->d1->timeout.num_alerts++;
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/* Reduce MTU after 2 unsuccessful retransmissions */
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if (D1I(s)->timeout.num_alerts > 2) {
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D1I(s)->mtu = BIO_ctrl(SSL_get_wbio(s),
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if (s->d1->timeout.num_alerts > 2) {
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s->d1->mtu = BIO_ctrl(SSL_get_wbio(s),
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BIO_CTRL_DGRAM_GET_FALLBACK_MTU, 0, NULL);
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}
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if (D1I(s)->timeout.num_alerts > DTLS1_TMO_ALERT_COUNT) {
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if (s->d1->timeout.num_alerts > DTLS1_TMO_ALERT_COUNT) {
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/* fail the connection, enough alerts have been sent */
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SSLerror(s, SSL_R_READ_TIMEOUT_EXPIRED);
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return -1;
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@@ -400,9 +389,9 @@ dtls1_handle_timeout(SSL *s)
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if (dtls1_check_timeout_num(s) < 0)
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return -1;
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D1I(s)->timeout.read_timeouts++;
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if (D1I(s)->timeout.read_timeouts > DTLS1_TMO_READ_COUNT) {
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D1I(s)->timeout.read_timeouts = 1;
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s->d1->timeout.read_timeouts++;
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if (s->d1->timeout.read_timeouts > DTLS1_TMO_READ_COUNT) {
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s->d1->timeout.read_timeouts = 1;
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}
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dtls1_start_timer(s);
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@@ -418,7 +407,7 @@ dtls1_listen(SSL *s, struct sockaddr *client)
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SSL_clear(s);
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SSL_set_options(s, SSL_OP_COOKIE_EXCHANGE);
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D1I(s)->listen = 1;
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s->d1->listen = 1;
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ret = SSL_accept(s);
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if (ret <= 0)
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@@ -427,24 +416,3 @@ dtls1_listen(SSL *s, struct sockaddr *client)
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(void)BIO_dgram_get_peer(SSL_get_rbio(s), client);
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return 1;
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}
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void
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dtls1_build_sequence_number(unsigned char *dst, unsigned char *seq,
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unsigned short epoch)
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{
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CBB cbb;
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if (!CBB_init_fixed(&cbb, dst, SSL3_SEQUENCE_SIZE))
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goto err;
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if (!CBB_add_u16(&cbb, epoch))
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goto err;
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if (!CBB_add_bytes(&cbb, &seq[2], SSL3_SEQUENCE_SIZE - 2))
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goto err;
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if (!CBB_finish(&cbb, NULL, NULL))
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goto err;
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return;
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err:
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CBB_cleanup(&cbb);
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}
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