Delete bundled copy of OpenSSL and replace with README.

openssl/ssl/d1_lib.c

Index: openssl/ssl/d1_lib.c
diff --git a/openssl/ssl/d1_lib.c b/openssl/ssl/d1_lib.c
deleted file mode 100644
index 1004c578626a7c70dba33b4c39687c420e4bce14..0000000000000000000000000000000000000000
--- a/openssl/ssl/d1_lib.c
+++ /dev/null
@@ -1,485 +0,0 @@
-/* ssl/d1_lib.c */
-/* 
- * DTLS implementation written by Nagendra Modadugu
- * (nagendra@cs.stanford.edu) for the OpenSSL project 2005.  
- */
-/* ====================================================================
- * Copyright (c) 1999-2005 The OpenSSL Project.  All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer. 
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- *    software must display the following acknowledgment:
- *    "This product includes software developed by the OpenSSL Project
- *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- *    endorse or promote products derived from this software without
- *    prior written permission. For written permission, please contact
- *    openssl-core@OpenSSL.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- *    nor may "OpenSSL" appear in their names without prior written
- *    permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- *    acknowledgment:
- *    "This product includes software developed by the OpenSSL Project
- *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com).  This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
- *
- */
-
-#include <stdio.h>
-#define USE_SOCKETS
-#include <openssl/objects.h>
-#include "ssl_locl.h"
-
-#if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_VMS)
-#include <sys/timeb.h>
-#endif
-
-static void get_current_time(struct timeval *t);
-const char dtls1_version_str[]="DTLSv1" OPENSSL_VERSION_PTEXT;
-int dtls1_listen(SSL *s, struct sockaddr *client);
-
-SSL3_ENC_METHOD DTLSv1_enc_data={
-    dtls1_enc,
-	tls1_mac,
-	tls1_setup_key_block,
-	tls1_generate_master_secret,
-	tls1_change_cipher_state,
-	tls1_final_finish_mac,
-	TLS1_FINISH_MAC_LENGTH,
-	tls1_cert_verify_mac,
-	TLS_MD_CLIENT_FINISH_CONST,TLS_MD_CLIENT_FINISH_CONST_SIZE,
-	TLS_MD_SERVER_FINISH_CONST,TLS_MD_SERVER_FINISH_CONST_SIZE,
-	tls1_alert_code,
-	tls1_export_keying_material,
-	};
-
-long dtls1_default_timeout(void)
-	{
-	/* 2 hours, the 24 hours mentioned in the DTLSv1 spec
-	 * is way too long for http, the cache would over fill */
-	return(60*60*2);
-	}
-
-int dtls1_new(SSL *s)
-	{
-	DTLS1_STATE *d1;
-
-	if (!ssl3_new(s)) return(0);
-	if ((d1=OPENSSL_malloc(sizeof *d1)) == NULL) return (0);
-	memset(d1,0, sizeof *d1);
-
-	/* d1->handshake_epoch=0; */
-
-	d1->unprocessed_rcds.q=pqueue_new();
-	d1->processed_rcds.q=pqueue_new();
-	d1->buffered_messages = pqueue_new();
-	d1->sent_messages=pqueue_new();
-	d1->buffered_app_data.q=pqueue_new();
-
-	if ( s->server)
-		{
-		d1->cookie_len = sizeof(s->d1->cookie);
-		}
-
-	if( ! d1->unprocessed_rcds.q || ! d1->processed_rcds.q 
-        || ! d1->buffered_messages || ! d1->sent_messages || ! d1->buffered_app_data.q)
-		{
-        if ( d1->unprocessed_rcds.q) pqueue_free(d1->unprocessed_rcds.q);
-        if ( d1->processed_rcds.q) pqueue_free(d1->processed_rcds.q);
-        if ( d1->buffered_messages) pqueue_free(d1->buffered_messages);
-		if ( d1->sent_messages) pqueue_free(d1->sent_messages);
-		if ( d1->buffered_app_data.q) pqueue_free(d1->buffered_app_data.q);
-		OPENSSL_free(d1);
-		return (0);
-		}
-
-	s->d1=d1;
-	s->method->ssl_clear(s);
-	return(1);
-	}
-
-static void dtls1_clear_queues(SSL *s)
-	{
-    pitem *item = NULL;
-    hm_fragment *frag = NULL;
-	DTLS1_RECORD_DATA *rdata;
-
-    while( (item = pqueue_pop(s->d1->unprocessed_rcds.q)) != NULL)
-        {
-		rdata = (DTLS1_RECORD_DATA *) item->data;
-		if (rdata->rbuf.buf)
-			{
-			OPENSSL_free(rdata->rbuf.buf);
-			}
-        OPENSSL_free(item->data);
-        pitem_free(item);
-        }
-
-    while( (item = pqueue_pop(s->d1->processed_rcds.q)) != NULL)
-        {
-		rdata = (DTLS1_RECORD_DATA *) item->data;
-		if (rdata->rbuf.buf)
-			{
-			OPENSSL_free(rdata->rbuf.buf);
-			}
-        OPENSSL_free(item->data);
-        pitem_free(item);
-        }
-
-    while( (item = pqueue_pop(s->d1->buffered_messages)) != NULL)
-        {
-        frag = (hm_fragment *)item->data;
-        OPENSSL_free(frag->fragment);
-        OPENSSL_free(frag);
-        pitem_free(item);
-        }
-
-    while ( (item = pqueue_pop(s->d1->sent_messages)) != NULL)
-        {
-        frag = (hm_fragment *)item->data;
-        OPENSSL_free(frag->fragment);
-        OPENSSL_free(frag);
-        pitem_free(item);
-        }
-
-	while ( (item = pqueue_pop(s->d1->buffered_app_data.q)) != NULL)
-		{
-		rdata = (DTLS1_RECORD_DATA *) item->data;
-		if (rdata->rbuf.buf)
-			{
-			OPENSSL_free(rdata->rbuf.buf);
-			}
-		OPENSSL_free(item->data);
-		pitem_free(item);
-		}
-	}
-
-void dtls1_free(SSL *s)
-	{
-	ssl3_free(s);
-
-	dtls1_clear_queues(s);
-
-    pqueue_free(s->d1->unprocessed_rcds.q);
-    pqueue_free(s->d1->processed_rcds.q);
-    pqueue_free(s->d1->buffered_messages);
-	pqueue_free(s->d1->sent_messages);
-	pqueue_free(s->d1->buffered_app_data.q);
-
-	OPENSSL_free(s->d1);
-	}
-
-void dtls1_clear(SSL *s)
-	{
-    pqueue unprocessed_rcds;
-    pqueue processed_rcds;
-    pqueue buffered_messages;
-	pqueue sent_messages;
-	pqueue buffered_app_data;
-	unsigned int mtu;
-
-	if (s->d1)
-		{
-		unprocessed_rcds = s->d1->unprocessed_rcds.q;
-		processed_rcds = s->d1->processed_rcds.q;
-		buffered_messages = s->d1->buffered_messages;
-		sent_messages = s->d1->sent_messages;
-		buffered_app_data = s->d1->buffered_app_data.q;
-		mtu = s->d1->mtu;
-
-		dtls1_clear_queues(s);
-
-		memset(s->d1, 0, sizeof(*(s->d1)));
-
-		if (s->server)
-			{
-			s->d1->cookie_len = sizeof(s->d1->cookie);
-			}
-
-		if (SSL_get_options(s) & SSL_OP_NO_QUERY_MTU)
-			{
-			s->d1->mtu = mtu;
-			}
-
-		s->d1->unprocessed_rcds.q = unprocessed_rcds;
-		s->d1->processed_rcds.q = processed_rcds;
-		s->d1->buffered_messages = buffered_messages;
-		s->d1->sent_messages = sent_messages;
-		s->d1->buffered_app_data.q = buffered_app_data;
-		}
-
-	ssl3_clear(s);
-	if (s->options & SSL_OP_CISCO_ANYCONNECT)
-		s->version=DTLS1_BAD_VER;
-	else
-		s->version=DTLS1_VERSION;
-	}
-
-long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg)
-	{
-	int ret=0;
-
-	switch (cmd)
-		{
-	case DTLS_CTRL_GET_TIMEOUT:
-		if (dtls1_get_timeout(s, (struct timeval*) parg) != NULL)
-			{
-			ret = 1;
-			}
-		break;
-	case DTLS_CTRL_HANDLE_TIMEOUT:
-		ret = dtls1_handle_timeout(s);
-		break;
-	case DTLS_CTRL_LISTEN:
-		ret = dtls1_listen(s, parg);
-		break;
-
-	default:
-		ret = ssl3_ctrl(s, cmd, larg, parg);
-		break;
-		}
-	return(ret);
-	}
-
-/*
- * As it's impossible to use stream ciphers in "datagram" mode, this
- * simple filter is designed to disengage them in DTLS. Unfortunately
- * there is no universal way to identify stream SSL_CIPHER, so we have
- * to explicitly list their SSL_* codes. Currently RC4 is the only one
- * available, but if new ones emerge, they will have to be added...
- */
-const SSL_CIPHER *dtls1_get_cipher(unsigned int u)
-	{
-	const SSL_CIPHER *ciph = ssl3_get_cipher(u);
-
-	if (ciph != NULL)
-		{
-		if (ciph->algorithm_enc == SSL_RC4)
-			return NULL;
-		}
-
-	return ciph;
-	}
-
-void dtls1_start_timer(SSL *s)
-	{
-#ifndef OPENSSL_NO_SCTP
-	/* Disable timer for SCTP */
-	if (BIO_dgram_is_sctp(SSL_get_wbio(s)))
-		{
-		memset(&(s->d1->next_timeout), 0, sizeof(struct timeval));
-		return;
-		}
-#endif
-
-	/* If timer is not set, initialize duration with 1 second */
-	if (s->d1->next_timeout.tv_sec == 0 && s->d1->next_timeout.tv_usec == 0)
-		{
-		s->d1->timeout_duration = 1;
-		}
-	
-	/* Set timeout to current time */
-	get_current_time(&(s->d1->next_timeout));
-
-	/* Add duration to current time */
-	s->d1->next_timeout.tv_sec += s->d1->timeout_duration;
-	BIO_ctrl(SSL_get_rbio(s), BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT, 0, &(s->d1->next_timeout));
-	}
-
-struct timeval* dtls1_get_timeout(SSL *s, struct timeval* timeleft)
-	{
-	struct timeval timenow;
-
-	/* If no timeout is set, just return NULL */
-	if (s->d1->next_timeout.tv_sec == 0 && s->d1->next_timeout.tv_usec == 0)
-		{
-		return NULL;
-		}
-
-	/* Get current time */
-	get_current_time(&timenow);
-
-	/* If timer already expired, set remaining time to 0 */
-	if (s->d1->next_timeout.tv_sec < timenow.tv_sec ||
-		(s->d1->next_timeout.tv_sec == timenow.tv_sec &&
-		 s->d1->next_timeout.tv_usec <= timenow.tv_usec))
-		{
-		memset(timeleft, 0, sizeof(struct timeval));
-		return timeleft;
-		}
-
-	/* Calculate time left until timer expires */
-	memcpy(timeleft, &(s->d1->next_timeout), sizeof(struct timeval));
-	timeleft->tv_sec -= timenow.tv_sec;
-	timeleft->tv_usec -= timenow.tv_usec;
-	if (timeleft->tv_usec < 0)
-		{
-		timeleft->tv_sec--;
-		timeleft->tv_usec += 1000000;
-		}
-
-	/* If remaining time is less than 15 ms, set it to 0
-	 * to prevent issues because of small devergences with
-	 * socket timeouts.
-	 */
-	if (timeleft->tv_sec == 0 && timeleft->tv_usec < 15000)
-		{
-		memset(timeleft, 0, sizeof(struct timeval));
-		}
-	
-
-	return timeleft;
-	}
-
-int dtls1_is_timer_expired(SSL *s)
-	{
-	struct timeval timeleft;
-
-	/* Get time left until timeout, return false if no timer running */
-	if (dtls1_get_timeout(s, &timeleft) == NULL)
-		{
-		return 0;
-		}
-
-	/* Return false if timer is not expired yet */
-	if (timeleft.tv_sec > 0 || timeleft.tv_usec > 0)
-		{
-		return 0;
-		}
-
-	/* Timer expired, so return true */	
-	return 1;
-	}
-
-void dtls1_double_timeout(SSL *s)
-	{
-	s->d1->timeout_duration *= 2;
-	if (s->d1->timeout_duration > 60)
-		s->d1->timeout_duration = 60;
-	dtls1_start_timer(s);
-	}
-
-void dtls1_stop_timer(SSL *s)
-	{
-	/* Reset everything */
-	memset(&(s->d1->timeout), 0, sizeof(struct dtls1_timeout_st));
-	memset(&(s->d1->next_timeout), 0, sizeof(struct timeval));
-	s->d1->timeout_duration = 1;
-	BIO_ctrl(SSL_get_rbio(s), BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT, 0, &(s->d1->next_timeout));
-	/* Clear retransmission buffer */
-	dtls1_clear_record_buffer(s);
-	}
-
-int dtls1_check_timeout_num(SSL *s)
-	{
-	s->d1->timeout.num_alerts++;
-
-	/* Reduce MTU after 2 unsuccessful retransmissions */
-	if (s->d1->timeout.num_alerts > 2)
-		{
-		s->d1->mtu = BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_GET_FALLBACK_MTU, 0, NULL);		
-		}
-
-	if (s->d1->timeout.num_alerts > DTLS1_TMO_ALERT_COUNT)
-		{
-		/* fail the connection, enough alerts have been sent */
-		SSLerr(SSL_F_DTLS1_CHECK_TIMEOUT_NUM,SSL_R_READ_TIMEOUT_EXPIRED);
-		return -1;
-		}
-
-	return 0;
-	}
-
-int dtls1_handle_timeout(SSL *s)
-	{
-	/* if no timer is expired, don't do anything */
-	if (!dtls1_is_timer_expired(s))
-		{
-		return 0;
-		}
-
-	dtls1_double_timeout(s);
-
-	if (dtls1_check_timeout_num(s) < 0)
-		return -1;
-
-	s->d1->timeout.read_timeouts++;
-	if (s->d1->timeout.read_timeouts > DTLS1_TMO_READ_COUNT)
-		{
-		s->d1->timeout.read_timeouts = 1;
-		}
-
-#ifndef OPENSSL_NO_HEARTBEATS
-	if (s->tlsext_hb_pending)
-		{
-		s->tlsext_hb_pending = 0;
-		return dtls1_heartbeat(s);
-		}
-#endif
-
-	dtls1_start_timer(s);
-	return dtls1_retransmit_buffered_messages(s);
-	}
-
-static void get_current_time(struct timeval *t)
-{
-#ifdef OPENSSL_SYS_WIN32
-	struct _timeb tb;
-	_ftime(&tb);
-	t->tv_sec = (long)tb.time;
-	t->tv_usec = (long)tb.millitm * 1000;
-#elif defined(OPENSSL_SYS_VMS)
-	struct timeb tb;
-	ftime(&tb);
-	t->tv_sec = (long)tb.time;
-	t->tv_usec = (long)tb.millitm * 1000;
-#else
-	gettimeofday(t, NULL);
-#endif
-}
-
-int dtls1_listen(SSL *s, struct sockaddr *client)
-	{
-	int ret;
-
-	SSL_set_options(s, SSL_OP_COOKIE_EXCHANGE);
-	s->d1->listen = 1;
-
-	ret = SSL_accept(s);
-	if (ret <= 0) return ret;
-	
-	(void) BIO_dgram_get_peer(SSL_get_rbio(s), client);
-	return 1;
-	}