svn merge ^/branches/released .

1 files changed, 830 insertions, 830 deletions

diff --git a/openssl/crypto/bio/bss_dgram.c b/openssl/crypto/bio/bss_dgram.c
index eb7e36546..117ab599d 100644
--- a/openssl/crypto/bio/bss_dgram.c
+++ b/openssl/crypto/bio/bss_dgram.c
@@ -1,830 +1,830 @@
-/* crypto/bio/bio_dgram.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).
- *
- */
-
-#ifndef OPENSSL_NO_DGRAM
-
-#include <stdio.h>
-#include <errno.h>
-#define USE_SOCKETS
-#include "cryptlib.h"
-
-#include <openssl/bio.h>
-
-#if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_VMS)
-#include <sys/timeb.h>
-#endif
-
-#ifdef OPENSSL_SYS_LINUX
-#define IP_MTU      14 /* linux is lame */
-#endif
-
-#ifdef WATT32
-#define sock_write SockWrite  /* Watt-32 uses same names */
-#define sock_read  SockRead
-#define sock_puts  SockPuts
-#endif
-
-static int dgram_write(BIO *h, const char *buf, int num);
-static int dgram_read(BIO *h, char *buf, int size);
-static int dgram_puts(BIO *h, const char *str);
-static long dgram_ctrl(BIO *h, int cmd, long arg1, void *arg2);
-static int dgram_new(BIO *h);
-static int dgram_free(BIO *data);
-static int dgram_clear(BIO *bio);
-
-static int BIO_dgram_should_retry(int s);
-
-static void get_current_time(struct timeval *t);
-
-static BIO_METHOD methods_dgramp=
-	{
-	BIO_TYPE_DGRAM,
-	"datagram socket",
-	dgram_write,
-	dgram_read,
-	dgram_puts,
-	NULL, /* dgram_gets, */
-	dgram_ctrl,
-	dgram_new,
-	dgram_free,
-	NULL,
-	};
-
-typedef struct bio_dgram_data_st
-	{
-	union {
-		struct sockaddr sa;
-		struct sockaddr_in sa_in;
-#if OPENSSL_USE_IPV6
-		struct sockaddr_in6 sa_in6;
-#endif
-	} peer;
-	unsigned int connected;
-	unsigned int _errno;
-	unsigned int mtu;
-	struct timeval next_timeout;
-	struct timeval socket_timeout;
-	} bio_dgram_data;
-
-BIO_METHOD *BIO_s_datagram(void)
-	{
-	return(&methods_dgramp);
-	}
-
-BIO *BIO_new_dgram(int fd, int close_flag)
-	{
-	BIO *ret;
-
-	ret=BIO_new(BIO_s_datagram());
-	if (ret == NULL) return(NULL);
-	BIO_set_fd(ret,fd,close_flag);
-	return(ret);
-	}
-
-static int dgram_new(BIO *bi)
-	{
-	bio_dgram_data *data = NULL;
-
-	bi->init=0;
-	bi->num=0;
-	data = OPENSSL_malloc(sizeof(bio_dgram_data));
-	if (data == NULL)
-		return 0;
-	memset(data, 0x00, sizeof(bio_dgram_data));
-    bi->ptr = data;
-
-	bi->flags=0;
-	return(1);
-	}
-
-static int dgram_free(BIO *a)
-	{
-	bio_dgram_data *data;
-
-	if (a == NULL) return(0);
-	if ( ! dgram_clear(a))
-		return 0;
-
-	data = (bio_dgram_data *)a->ptr;
-	if(data != NULL) OPENSSL_free(data);
-
-	return(1);
-	}
-
-static int dgram_clear(BIO *a)
-	{
-	if (a == NULL) return(0);
-	if (a->shutdown)
-		{
-		if (a->init)
-			{
-			SHUTDOWN2(a->num);
-			}
-		a->init=0;
-		a->flags=0;
-		}
-	return(1);
-	}
-
-static void dgram_adjust_rcv_timeout(BIO *b)
-	{
-#if defined(SO_RCVTIMEO)
-	bio_dgram_data *data = (bio_dgram_data *)b->ptr;
-	int sz = sizeof(int);
-
-	/* Is a timer active? */
-	if (data->next_timeout.tv_sec > 0 || data->next_timeout.tv_usec > 0)
-		{
-		struct timeval timenow, timeleft;
-
-		/* Read current socket timeout */
-#ifdef OPENSSL_SYS_WINDOWS
-		int timeout;
-		if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
-					   (void*)&timeout, &sz) < 0)
-			{ perror("getsockopt"); }
-		else
-			{
-			data->socket_timeout.tv_sec = timeout / 1000;
-			data->socket_timeout.tv_usec = (timeout % 1000) * 1000;
-			}
-#else
-		if ( getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, 
-						&(data->socket_timeout), (void *)&sz) < 0)
-			{ perror("getsockopt"); }
-#endif
-
-		/* Get current time */
-		get_current_time(&timenow);
-
-		/* Calculate time left until timer expires */
-		memcpy(&timeleft, &(data->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 (timeleft.tv_sec < 0)
-			{
-			timeleft.tv_sec = 0;
-			timeleft.tv_usec = 1;
-			}
-
-		/* Adjust socket timeout if next handhake message timer
-		 * will expire earlier.
-		 */
-		if ((data->socket_timeout.tv_sec == 0 && data->socket_timeout.tv_usec == 0) ||
-			(data->socket_timeout.tv_sec > timeleft.tv_sec) ||
-			(data->socket_timeout.tv_sec == timeleft.tv_sec &&
-			 data->socket_timeout.tv_usec >= timeleft.tv_usec))
-			{
-#ifdef OPENSSL_SYS_WINDOWS
-			timeout = timeleft.tv_sec * 1000 + timeleft.tv_usec / 1000;
-			if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
-						   (void*)&timeout, sizeof(timeout)) < 0)
-				{ perror("setsockopt"); }
-#else
-			if ( setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, &timeleft,
-							sizeof(struct timeval)) < 0)
-				{ perror("setsockopt"); }
-#endif
-			}
-		}
-#endif
-	}
-
-static void dgram_reset_rcv_timeout(BIO *b)
-	{
-#if defined(SO_RCVTIMEO)
-	bio_dgram_data *data = (bio_dgram_data *)b->ptr;
-
-	/* Is a timer active? */
-	if (data->next_timeout.tv_sec > 0 || data->next_timeout.tv_usec > 0)
-		{
-#ifdef OPENSSL_SYS_WINDOWS
-		int timeout = data->socket_timeout.tv_sec * 1000 +
-					  data->socket_timeout.tv_usec / 1000;
-		if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
-					   (void*)&timeout, sizeof(timeout)) < 0)
-			{ perror("setsockopt"); }
-#else
-		if ( setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, &(data->socket_timeout),
-						sizeof(struct timeval)) < 0)
-			{ perror("setsockopt"); }
-#endif
-		}
-#endif
-	}
-
-static int dgram_read(BIO *b, char *out, int outl)
-	{
-	int ret=0;
-	bio_dgram_data *data = (bio_dgram_data *)b->ptr;
-
-	struct	{
-	/*
-	 * See commentary in b_sock.c. <appro>
-	 */
-	union	{ size_t s; int i; } len;
-	union	{
-		struct sockaddr sa;
-		struct sockaddr_in sa_in;
-#if OPENSSL_USE_IPV6
-		struct sockaddr_in6 sa_in6;
-#endif
-		} peer;
-	} sa;
-
-	sa.len.s=0;
-	sa.len.i=sizeof(sa.peer);
-
-	if (out != NULL)
-		{
-		clear_socket_error();
-		memset(&sa.peer, 0x00, sizeof(sa.peer));
-		dgram_adjust_rcv_timeout(b);
-		ret=recvfrom(b->num,out,outl,0,&sa.peer.sa,(void *)&sa.len);
-		if (sizeof(sa.len.i)!=sizeof(sa.len.s) && sa.len.i==0)
-			{
-			OPENSSL_assert(sa.len.s<=sizeof(sa.peer));
-			sa.len.i = (int)sa.len.s;
-			}
-		dgram_reset_rcv_timeout(b);
-
-		if ( ! data->connected  && ret >= 0)
-			BIO_ctrl(b, BIO_CTRL_DGRAM_SET_PEER, 0, &sa.peer);
-
-		BIO_clear_retry_flags(b);
-		if (ret < 0)
-			{
-			if (BIO_dgram_should_retry(ret))
-				{
-				BIO_set_retry_read(b);
-				data->_errno = get_last_socket_error();
-				}
-			}
-		}
-	return(ret);
-	}
-
-static int dgram_write(BIO *b, const char *in, int inl)
-	{
-	int ret;
-	bio_dgram_data *data = (bio_dgram_data *)b->ptr;
-	clear_socket_error();
-
-	if ( data->connected )
-		ret=writesocket(b->num,in,inl);
-	else
-		{
-		int peerlen = sizeof(data->peer);
-
-		if (data->peer.sa.sa_family == AF_INET)
-			peerlen = sizeof(data->peer.sa_in);
-#if OPENSSL_USE_IVP6
-		else if (data->peer.sa.sa_family == AF_INET6)
-			peerlen = sizeof(data->peer.sa_in6);
-#endif
-#if defined(NETWARE_CLIB) && defined(NETWARE_BSDSOCK)
-		ret=sendto(b->num, (char *)in, inl, 0, &data->peer.sa, peerlen);
-#else
-		ret=sendto(b->num, in, inl, 0, &data->peer.sa, peerlen);
-#endif
-		}
-
-	BIO_clear_retry_flags(b);
-	if (ret <= 0)
-		{
-		if (BIO_dgram_should_retry(ret))
-			{
-			BIO_set_retry_write(b);  
-			data->_errno = get_last_socket_error();
-
-#if 0 /* higher layers are responsible for querying MTU, if necessary */
-			if ( data->_errno == EMSGSIZE)
-				/* retrieve the new MTU */
-				BIO_ctrl(b, BIO_CTRL_DGRAM_QUERY_MTU, 0, NULL);
-#endif
-			}
-		}
-	return(ret);
-	}
-
-static long dgram_ctrl(BIO *b, int cmd, long num, void *ptr)
-	{
-	long ret=1;
-	int *ip;
-	struct sockaddr *to = NULL;
-	bio_dgram_data *data = NULL;
-#if defined(IP_MTU_DISCOVER) || defined(IP_MTU)
-	long sockopt_val = 0;
-	unsigned int sockopt_len = 0;
-#endif
-#ifdef OPENSSL_SYS_LINUX
-	socklen_t addr_len;
-	union	{
-		struct sockaddr	sa;
-		struct sockaddr_in s4;
-#if OPENSSL_USE_IPV6
-		struct sockaddr_in6 s6;
-#endif
-		} addr;
-#endif
-
-	data = (bio_dgram_data *)b->ptr;
-
-	switch (cmd)
-		{
-	case BIO_CTRL_RESET:
-		num=0;
-	case BIO_C_FILE_SEEK:
-		ret=0;
-		break;
-	case BIO_C_FILE_TELL:
-	case BIO_CTRL_INFO:
-		ret=0;
-		break;
-	case BIO_C_SET_FD:
-		dgram_clear(b);
-		b->num= *((int *)ptr);
-		b->shutdown=(int)num;
-		b->init=1;
-		break;
-	case BIO_C_GET_FD:
-		if (b->init)
-			{
-			ip=(int *)ptr;
-			if (ip != NULL) *ip=b->num;
-			ret=b->num;
-			}
-		else
-			ret= -1;
-		break;
-	case BIO_CTRL_GET_CLOSE:
-		ret=b->shutdown;
-		break;
-	case BIO_CTRL_SET_CLOSE:
-		b->shutdown=(int)num;
-		break;
-	case BIO_CTRL_PENDING:
-	case BIO_CTRL_WPENDING:
-		ret=0;
-		break;
-	case BIO_CTRL_DUP:
-	case BIO_CTRL_FLUSH:
-		ret=1;
-		break;
-	case BIO_CTRL_DGRAM_CONNECT:
-		to = (struct sockaddr *)ptr;
-#if 0
-		if (connect(b->num, to, sizeof(struct sockaddr)) < 0)
-			{ perror("connect"); ret = 0; }
-		else
-			{
-#endif
-			switch (to->sa_family)
-				{
-				case AF_INET:
-					memcpy(&data->peer,to,sizeof(data->peer.sa_in));
-					break;
-#if OPENSSL_USE_IPV6
-				case AF_INET6:
-					memcpy(&data->peer,to,sizeof(data->peer.sa_in6));
-					break;
-#endif
-				default:
-					memcpy(&data->peer,to,sizeof(data->peer.sa));
-					break;
-				}
-#if 0
-			}
-#endif
-		break;
-		/* (Linux)kernel sets DF bit on outgoing IP packets */
-	case BIO_CTRL_DGRAM_MTU_DISCOVER:
-#ifdef OPENSSL_SYS_LINUX
-		addr_len = (socklen_t)sizeof(addr);
-		memset((void *)&addr, 0, sizeof(addr));
-		if (getsockname(b->num, &addr.sa, &addr_len) < 0)
-			{
-			ret = 0;
-			break;
-			}
-		sockopt_len = sizeof(sockopt_val);
-		switch (addr.sa.sa_family)
-			{
-		case AF_INET:
-			sockopt_val = IP_PMTUDISC_DO;
-			if ((ret = setsockopt(b->num, IPPROTO_IP, IP_MTU_DISCOVER,
-				&sockopt_val, sizeof(sockopt_val))) < 0)
-				perror("setsockopt");
-			break;
-#if OPENSSL_USE_IPV6 && defined(IPV6_MTU_DISCOVER)
-		case AF_INET6:
-			sockopt_val = IPV6_PMTUDISC_DO;
-			if ((ret = setsockopt(b->num, IPPROTO_IPV6, IPV6_MTU_DISCOVER,
-				&sockopt_val, sizeof(sockopt_val))) < 0)
-				perror("setsockopt");
-			break;
-#endif
-		default:
-			ret = -1;
-			break;
-			}
-		ret = -1;
-#else
-		break;
-#endif
-	case BIO_CTRL_DGRAM_QUERY_MTU:
-#ifdef OPENSSL_SYS_LINUX
-		addr_len = (socklen_t)sizeof(addr);
-		memset((void *)&addr, 0, sizeof(addr));
-		if (getsockname(b->num, &addr.sa, &addr_len) < 0)
-			{
-			ret = 0;
-			break;
-			}
-		sockopt_len = sizeof(sockopt_val);
-		switch (addr.sa.sa_family)
-			{
-		case AF_INET:
-			if ((ret = getsockopt(b->num, IPPROTO_IP, IP_MTU, (void *)&sockopt_val,
-				&sockopt_len)) < 0 || sockopt_val < 0)
-				{
-				ret = 0;
-				}
-			else
-				{
-				/* we assume that the transport protocol is UDP and no
-				 * IP options are used.
-				 */
-				data->mtu = sockopt_val - 8 - 20;
-				ret = data->mtu;
-				}
-			break;
-#if OPENSSL_USE_IPV6 && defined(IPV6_MTU)
-		case AF_INET6:
-			if ((ret = getsockopt(b->num, IPPROTO_IPV6, IPV6_MTU, (void *)&sockopt_val,
-				&sockopt_len)) < 0 || sockopt_val < 0)
-				{
-				ret = 0;
-				}
-			else
-				{
-				/* we assume that the transport protocol is UDP and no
-				 * IPV6 options are used.
-				 */
-				data->mtu = sockopt_val - 8 - 40;
-				ret = data->mtu;
-				}
-			break;
-#endif
-		default:
-			ret = 0;
-			break;
-			}
-#else
-		ret = 0;
-#endif
-		break;
-	case BIO_CTRL_DGRAM_GET_MTU:
-		return data->mtu;
-		break;
-	case BIO_CTRL_DGRAM_SET_MTU:
-		data->mtu = num;
-		ret = num;
-		break;
-	case BIO_CTRL_DGRAM_SET_CONNECTED:
-		to = (struct sockaddr *)ptr;
-
-		if ( to != NULL)
-			{
-			data->connected = 1;
-			switch (to->sa_family)
-				{
-				case AF_INET:
-					memcpy(&data->peer,to,sizeof(data->peer.sa_in));
-					break;
-#if OPENSSL_USE_IPV6
-				case AF_INET6:
-					memcpy(&data->peer,to,sizeof(data->peer.sa_in6));
-					break;
-#endif
-				default:
-					memcpy(&data->peer,to,sizeof(data->peer.sa));
-					break;
-				}
-			}
-		else
-			{
-			data->connected = 0;
-			memset(&(data->peer), 0x00, sizeof(data->peer));
-			}
-		break;
-	case BIO_CTRL_DGRAM_GET_PEER:
-		switch (data->peer.sa.sa_family)
-			{
-			case AF_INET:
-				ret=sizeof(data->peer.sa_in);
-				break;
-#if OPENSSL_USE_IPV6
-			case AF_INET6:
-				ret=sizeof(data->peer.sa_in6);
-				break;
-#endif
-			default:
-				ret=sizeof(data->peer.sa);
-				break;
-			}
-		if (num==0 || num>ret)
-			num=ret;
-		memcpy(ptr,&data->peer,(ret=num));
-		break;
-	case BIO_CTRL_DGRAM_SET_PEER:
-		to = (struct sockaddr *) ptr;
-		switch (to->sa_family)
-			{
-			case AF_INET:
-				memcpy(&data->peer,to,sizeof(data->peer.sa_in));
-				break;
-#if OPENSSL_USE_IPV6
-			case AF_INET6:
-				memcpy(&data->peer,to,sizeof(data->peer.sa_in6));
-				break;
-#endif
-			default:
-				memcpy(&data->peer,to,sizeof(data->peer.sa));
-				break;
-			}
-		break;
-	case BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT:
-		memcpy(&(data->next_timeout), ptr, sizeof(struct timeval));
-		break;
-#if defined(SO_RCVTIMEO)
-	case BIO_CTRL_DGRAM_SET_RECV_TIMEOUT:
-#ifdef OPENSSL_SYS_WINDOWS
-		{
-		struct timeval *tv = (struct timeval *)ptr;
-		int timeout = tv->tv_sec * 1000 + tv->tv_usec/1000;
-		if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
-			(void*)&timeout, sizeof(timeout)) < 0)
-			{ perror("setsockopt"); ret = -1; }
-		}
-#else
-		if ( setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, ptr,
-			sizeof(struct timeval)) < 0)
-			{ perror("setsockopt");	ret = -1; }
-#endif
-		break;
-	case BIO_CTRL_DGRAM_GET_RECV_TIMEOUT:
-#ifdef OPENSSL_SYS_WINDOWS
-		{
-		int timeout, sz = sizeof(timeout);
-		struct timeval *tv = (struct timeval *)ptr;
-		if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
-			(void*)&timeout, &sz) < 0)
-			{ perror("getsockopt"); ret = -1; }
-		else
-			{
-			tv->tv_sec = timeout / 1000;
-			tv->tv_usec = (timeout % 1000) * 1000;
-			ret = sizeof(*tv);
-			}
-		}
-#else
-		if ( getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, 
-			ptr, (void *)&ret) < 0)
-			{ perror("getsockopt"); ret = -1; }
-#endif
-		break;
-#endif
-#if defined(SO_SNDTIMEO)
-	case BIO_CTRL_DGRAM_SET_SEND_TIMEOUT:
-#ifdef OPENSSL_SYS_WINDOWS
-		{
-		struct timeval *tv = (struct timeval *)ptr;
-		int timeout = tv->tv_sec * 1000 + tv->tv_usec/1000;
-		if (setsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO,
-			(void*)&timeout, sizeof(timeout)) < 0)
-			{ perror("setsockopt"); ret = -1; }
-		}
-#else
-		if ( setsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO, ptr,
-			sizeof(struct timeval)) < 0)
-			{ perror("setsockopt");	ret = -1; }
-#endif
-		break;
-	case BIO_CTRL_DGRAM_GET_SEND_TIMEOUT:
-#ifdef OPENSSL_SYS_WINDOWS
-		{
-		int timeout, sz = sizeof(timeout);
-		struct timeval *tv = (struct timeval *)ptr;
-		if (getsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO,
-			(void*)&timeout, &sz) < 0)
-			{ perror("getsockopt"); ret = -1; }
-		else
-			{
-			tv->tv_sec = timeout / 1000;
-			tv->tv_usec = (timeout % 1000) * 1000;
-			ret = sizeof(*tv);
-			}
-		}
-#else
-		if ( getsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO, 
-			ptr, (void *)&ret) < 0)
-			{ perror("getsockopt"); ret = -1; }
-#endif
-		break;
-#endif
-	case BIO_CTRL_DGRAM_GET_SEND_TIMER_EXP:
-		/* fall-through */
-	case BIO_CTRL_DGRAM_GET_RECV_TIMER_EXP:
-#ifdef OPENSSL_SYS_WINDOWS
-		if ( data->_errno == WSAETIMEDOUT)
-#else
-		if ( data->_errno == EAGAIN)
-#endif
-			{
-			ret = 1;
-			data->_errno = 0;
-			}
-		else
-			ret = 0;
-		break;
-#ifdef EMSGSIZE
-	case BIO_CTRL_DGRAM_MTU_EXCEEDED:
-		if ( data->_errno == EMSGSIZE)
-			{
-			ret = 1;
-			data->_errno = 0;
-			}
-		else
-			ret = 0;
-		break;
-#endif
-	default:
-		ret=0;
-		break;
-		}
-	return(ret);
-	}
-
-static int dgram_puts(BIO *bp, const char *str)
-	{
-	int n,ret;
-
-	n=strlen(str);
-	ret=dgram_write(bp,str,n);
-	return(ret);
-	}
-
-static int BIO_dgram_should_retry(int i)
-	{
-	int err;
-
-	if ((i == 0) || (i == -1))
-		{
-		err=get_last_socket_error();
-
-#if defined(OPENSSL_SYS_WINDOWS) && 0 /* more microsoft stupidity? perhaps not? Ben 4/1/99 */
-		if ((i == -1) && (err == 0))
-			return(1);
-#endif
-
-		return(BIO_dgram_non_fatal_error(err));
-		}
-	return(0);
-	}
-
-int BIO_dgram_non_fatal_error(int err)
-	{
-	switch (err)
-		{
-#if defined(OPENSSL_SYS_WINDOWS)
-# if defined(WSAEWOULDBLOCK)
-	case WSAEWOULDBLOCK:
-# endif
-
-# if 0 /* This appears to always be an error */
-#  if defined(WSAENOTCONN)
-	case WSAENOTCONN:
-#  endif
-# endif
-#endif
-
-#ifdef EWOULDBLOCK
-# ifdef WSAEWOULDBLOCK
-#  if WSAEWOULDBLOCK != EWOULDBLOCK
-	case EWOULDBLOCK:
-#  endif
-# else
-	case EWOULDBLOCK:
-# endif
-#endif
-
-#ifdef EINTR
-	case EINTR:
-#endif
-
-#ifdef EAGAIN
-#if EWOULDBLOCK != EAGAIN
-	case EAGAIN:
-# endif
-#endif
-
-#ifdef EPROTO
-	case EPROTO:
-#endif
-
-#ifdef EINPROGRESS
-	case EINPROGRESS:
-#endif
-
-#ifdef EALREADY
-	case EALREADY:
-#endif
-
-		return(1);
-		/* break; */
-	default:
-		break;
-		}
-	return(0);
-	}
-#endif
-
-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
-	}
+/* crypto/bio/bio_dgram.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).

+ *

+ */

+

+#ifndef OPENSSL_NO_DGRAM

+

+#include <stdio.h>

+#include <errno.h>

+#define USE_SOCKETS

+#include "cryptlib.h"

+

+#include <openssl/bio.h>

+

+#if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_VMS)

+#include <sys/timeb.h>

+#endif

+

+#ifdef OPENSSL_SYS_LINUX

+#define IP_MTU      14 /* linux is lame */

+#endif

+

+#ifdef WATT32

+#define sock_write SockWrite  /* Watt-32 uses same names */

+#define sock_read  SockRead

+#define sock_puts  SockPuts

+#endif

+

+static int dgram_write(BIO *h, const char *buf, int num);

+static int dgram_read(BIO *h, char *buf, int size);

+static int dgram_puts(BIO *h, const char *str);

+static long dgram_ctrl(BIO *h, int cmd, long arg1, void *arg2);

+static int dgram_new(BIO *h);

+static int dgram_free(BIO *data);

+static int dgram_clear(BIO *bio);

+

+static int BIO_dgram_should_retry(int s);

+

+static void get_current_time(struct timeval *t);

+

+static BIO_METHOD methods_dgramp=

+	{

+	BIO_TYPE_DGRAM,

+	"datagram socket",

+	dgram_write,

+	dgram_read,

+	dgram_puts,

+	NULL, /* dgram_gets, */

+	dgram_ctrl,

+	dgram_new,

+	dgram_free,

+	NULL,

+	};

+

+typedef struct bio_dgram_data_st

+	{

+	union {

+		struct sockaddr sa;

+		struct sockaddr_in sa_in;

+#if OPENSSL_USE_IPV6

+		struct sockaddr_in6 sa_in6;

+#endif

+	} peer;

+	unsigned int connected;

+	unsigned int _errno;

+	unsigned int mtu;

+	struct timeval next_timeout;

+	struct timeval socket_timeout;

+	} bio_dgram_data;

+

+BIO_METHOD *BIO_s_datagram(void)

+	{

+	return(&methods_dgramp);

+	}

+

+BIO *BIO_new_dgram(int fd, int close_flag)

+	{

+	BIO *ret;

+

+	ret=BIO_new(BIO_s_datagram());

+	if (ret == NULL) return(NULL);

+	BIO_set_fd(ret,fd,close_flag);

+	return(ret);

+	}

+

+static int dgram_new(BIO *bi)

+	{

+	bio_dgram_data *data = NULL;

+

+	bi->init=0;

+	bi->num=0;

+	data = OPENSSL_malloc(sizeof(bio_dgram_data));

+	if (data == NULL)

+		return 0;

+	memset(data, 0x00, sizeof(bio_dgram_data));

+    bi->ptr = data;

+

+	bi->flags=0;

+	return(1);

+	}

+

+static int dgram_free(BIO *a)

+	{

+	bio_dgram_data *data;

+

+	if (a == NULL) return(0);

+	if ( ! dgram_clear(a))

+		return 0;

+

+	data = (bio_dgram_data *)a->ptr;

+	if(data != NULL) OPENSSL_free(data);

+

+	return(1);

+	}

+

+static int dgram_clear(BIO *a)

+	{

+	if (a == NULL) return(0);

+	if (a->shutdown)

+		{

+		if (a->init)

+			{

+			SHUTDOWN2(a->num);

+			}

+		a->init=0;

+		a->flags=0;

+		}

+	return(1);

+	}

+

+static void dgram_adjust_rcv_timeout(BIO *b)

+	{

+#if defined(SO_RCVTIMEO)

+	bio_dgram_data *data = (bio_dgram_data *)b->ptr;

+	int sz = sizeof(int);

+

+	/* Is a timer active? */

+	if (data->next_timeout.tv_sec > 0 || data->next_timeout.tv_usec > 0)

+		{

+		struct timeval timenow, timeleft;

+

+		/* Read current socket timeout */

+#ifdef OPENSSL_SYS_WINDOWS

+		int timeout;

+		if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,

+					   (void*)&timeout, &sz) < 0)

+			{ perror("getsockopt"); }

+		else

+			{

+			data->socket_timeout.tv_sec = timeout / 1000;

+			data->socket_timeout.tv_usec = (timeout % 1000) * 1000;

+			}

+#else

+		if ( getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, 

+						&(data->socket_timeout), (void *)&sz) < 0)

+			{ perror("getsockopt"); }

+#endif

+

+		/* Get current time */

+		get_current_time(&timenow);

+

+		/* Calculate time left until timer expires */

+		memcpy(&timeleft, &(data->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 (timeleft.tv_sec < 0)

+			{

+			timeleft.tv_sec = 0;

+			timeleft.tv_usec = 1;

+			}

+

+		/* Adjust socket timeout if next handhake message timer

+		 * will expire earlier.

+		 */

+		if ((data->socket_timeout.tv_sec == 0 && data->socket_timeout.tv_usec == 0) ||

+			(data->socket_timeout.tv_sec > timeleft.tv_sec) ||

+			(data->socket_timeout.tv_sec == timeleft.tv_sec &&

+			 data->socket_timeout.tv_usec >= timeleft.tv_usec))

+			{

+#ifdef OPENSSL_SYS_WINDOWS

+			timeout = timeleft.tv_sec * 1000 + timeleft.tv_usec / 1000;

+			if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,

+						   (void*)&timeout, sizeof(timeout)) < 0)

+				{ perror("setsockopt"); }

+#else

+			if ( setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, &timeleft,

+							sizeof(struct timeval)) < 0)

+				{ perror("setsockopt"); }

+#endif

+			}

+		}

+#endif

+	}

+

+static void dgram_reset_rcv_timeout(BIO *b)

+	{

+#if defined(SO_RCVTIMEO)

+	bio_dgram_data *data = (bio_dgram_data *)b->ptr;

+

+	/* Is a timer active? */

+	if (data->next_timeout.tv_sec > 0 || data->next_timeout.tv_usec > 0)

+		{

+#ifdef OPENSSL_SYS_WINDOWS

+		int timeout = data->socket_timeout.tv_sec * 1000 +

+					  data->socket_timeout.tv_usec / 1000;

+		if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,

+					   (void*)&timeout, sizeof(timeout)) < 0)

+			{ perror("setsockopt"); }

+#else

+		if ( setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, &(data->socket_timeout),

+						sizeof(struct timeval)) < 0)

+			{ perror("setsockopt"); }

+#endif

+		}

+#endif

+	}

+

+static int dgram_read(BIO *b, char *out, int outl)

+	{

+	int ret=0;

+	bio_dgram_data *data = (bio_dgram_data *)b->ptr;

+

+	struct	{

+	/*

+	 * See commentary in b_sock.c. <appro>

+	 */

+	union	{ size_t s; int i; } len;

+	union	{

+		struct sockaddr sa;

+		struct sockaddr_in sa_in;

+#if OPENSSL_USE_IPV6

+		struct sockaddr_in6 sa_in6;

+#endif

+		} peer;

+	} sa;

+

+	sa.len.s=0;

+	sa.len.i=sizeof(sa.peer);

+

+	if (out != NULL)

+		{

+		clear_socket_error();

+		memset(&sa.peer, 0x00, sizeof(sa.peer));

+		dgram_adjust_rcv_timeout(b);

+		ret=recvfrom(b->num,out,outl,0,&sa.peer.sa,(void *)&sa.len);

+		if (sizeof(sa.len.i)!=sizeof(sa.len.s) && sa.len.i==0)

+			{

+			OPENSSL_assert(sa.len.s<=sizeof(sa.peer));

+			sa.len.i = (int)sa.len.s;

+			}

+		dgram_reset_rcv_timeout(b);

+

+		if ( ! data->connected  && ret >= 0)

+			BIO_ctrl(b, BIO_CTRL_DGRAM_SET_PEER, 0, &sa.peer);

+

+		BIO_clear_retry_flags(b);

+		if (ret < 0)

+			{

+			if (BIO_dgram_should_retry(ret))

+				{

+				BIO_set_retry_read(b);

+				data->_errno = get_last_socket_error();

+				}

+			}

+		}

+	return(ret);

+	}

+

+static int dgram_write(BIO *b, const char *in, int inl)

+	{

+	int ret;

+	bio_dgram_data *data = (bio_dgram_data *)b->ptr;

+	clear_socket_error();

+

+	if ( data->connected )

+		ret=writesocket(b->num,in,inl);

+	else

+		{

+		int peerlen = sizeof(data->peer);

+

+		if (data->peer.sa.sa_family == AF_INET)

+			peerlen = sizeof(data->peer.sa_in);

+#if OPENSSL_USE_IPV6

+		else if (data->peer.sa.sa_family == AF_INET6)

+			peerlen = sizeof(data->peer.sa_in6);

+#endif

+#if defined(NETWARE_CLIB) && defined(NETWARE_BSDSOCK)

+		ret=sendto(b->num, (char *)in, inl, 0, &data->peer.sa, peerlen);

+#else

+		ret=sendto(b->num, in, inl, 0, &data->peer.sa, peerlen);

+#endif

+		}

+

+	BIO_clear_retry_flags(b);

+	if (ret <= 0)

+		{

+		if (BIO_dgram_should_retry(ret))

+			{

+			BIO_set_retry_write(b);  

+			data->_errno = get_last_socket_error();

+

+#if 0 /* higher layers are responsible for querying MTU, if necessary */

+			if ( data->_errno == EMSGSIZE)

+				/* retrieve the new MTU */

+				BIO_ctrl(b, BIO_CTRL_DGRAM_QUERY_MTU, 0, NULL);

+#endif

+			}

+		}

+	return(ret);

+	}

+

+static long dgram_ctrl(BIO *b, int cmd, long num, void *ptr)

+	{

+	long ret=1;

+	int *ip;

+	struct sockaddr *to = NULL;

+	bio_dgram_data *data = NULL;

+#if defined(IP_MTU_DISCOVER) || defined(IP_MTU)

+	long sockopt_val = 0;

+	unsigned int sockopt_len = 0;

+#endif

+#ifdef OPENSSL_SYS_LINUX

+	socklen_t addr_len;

+	union	{

+		struct sockaddr	sa;

+		struct sockaddr_in s4;

+#if OPENSSL_USE_IPV6

+		struct sockaddr_in6 s6;

+#endif

+		} addr;

+#endif

+

+	data = (bio_dgram_data *)b->ptr;

+

+	switch (cmd)

+		{

+	case BIO_CTRL_RESET:

+		num=0;

+	case BIO_C_FILE_SEEK:

+		ret=0;

+		break;

+	case BIO_C_FILE_TELL:

+	case BIO_CTRL_INFO:

+		ret=0;

+		break;

+	case BIO_C_SET_FD:

+		dgram_clear(b);

+		b->num= *((int *)ptr);

+		b->shutdown=(int)num;

+		b->init=1;

+		break;

+	case BIO_C_GET_FD:

+		if (b->init)

+			{

+			ip=(int *)ptr;

+			if (ip != NULL) *ip=b->num;

+			ret=b->num;

+			}

+		else

+			ret= -1;

+		break;

+	case BIO_CTRL_GET_CLOSE:

+		ret=b->shutdown;

+		break;

+	case BIO_CTRL_SET_CLOSE:

+		b->shutdown=(int)num;

+		break;

+	case BIO_CTRL_PENDING:

+	case BIO_CTRL_WPENDING:

+		ret=0;

+		break;

+	case BIO_CTRL_DUP:

+	case BIO_CTRL_FLUSH:

+		ret=1;

+		break;

+	case BIO_CTRL_DGRAM_CONNECT:

+		to = (struct sockaddr *)ptr;

+#if 0

+		if (connect(b->num, to, sizeof(struct sockaddr)) < 0)

+			{ perror("connect"); ret = 0; }

+		else

+			{

+#endif

+			switch (to->sa_family)

+				{

+				case AF_INET:

+					memcpy(&data->peer,to,sizeof(data->peer.sa_in));

+					break;

+#if OPENSSL_USE_IPV6

+				case AF_INET6:

+					memcpy(&data->peer,to,sizeof(data->peer.sa_in6));

+					break;

+#endif

+				default:

+					memcpy(&data->peer,to,sizeof(data->peer.sa));

+					break;

+				}

+#if 0

+			}

+#endif

+		break;

+		/* (Linux)kernel sets DF bit on outgoing IP packets */

+	case BIO_CTRL_DGRAM_MTU_DISCOVER:

+#ifdef OPENSSL_SYS_LINUX

+		addr_len = (socklen_t)sizeof(addr);

+		memset((void *)&addr, 0, sizeof(addr));

+		if (getsockname(b->num, &addr.sa, &addr_len) < 0)

+			{

+			ret = 0;

+			break;

+			}

+		sockopt_len = sizeof(sockopt_val);

+		switch (addr.sa.sa_family)

+			{

+		case AF_INET:

+			sockopt_val = IP_PMTUDISC_DO;

+			if ((ret = setsockopt(b->num, IPPROTO_IP, IP_MTU_DISCOVER,

+				&sockopt_val, sizeof(sockopt_val))) < 0)

+				perror("setsockopt");

+			break;

+#if OPENSSL_USE_IPV6 && defined(IPV6_MTU_DISCOVER)

+		case AF_INET6:

+			sockopt_val = IPV6_PMTUDISC_DO;

+			if ((ret = setsockopt(b->num, IPPROTO_IPV6, IPV6_MTU_DISCOVER,

+				&sockopt_val, sizeof(sockopt_val))) < 0)

+				perror("setsockopt");

+			break;

+#endif

+		default:

+			ret = -1;

+			break;

+			}

+		ret = -1;

+#else

+		break;

+#endif

+	case BIO_CTRL_DGRAM_QUERY_MTU:

+#ifdef OPENSSL_SYS_LINUX

+		addr_len = (socklen_t)sizeof(addr);

+		memset((void *)&addr, 0, sizeof(addr));

+		if (getsockname(b->num, &addr.sa, &addr_len) < 0)

+			{

+			ret = 0;

+			break;

+			}

+		sockopt_len = sizeof(sockopt_val);

+		switch (addr.sa.sa_family)

+			{

+		case AF_INET:

+			if ((ret = getsockopt(b->num, IPPROTO_IP, IP_MTU, (void *)&sockopt_val,

+				&sockopt_len)) < 0 || sockopt_val < 0)

+				{

+				ret = 0;

+				}

+			else

+				{

+				/* we assume that the transport protocol is UDP and no

+				 * IP options are used.

+				 */

+				data->mtu = sockopt_val - 8 - 20;

+				ret = data->mtu;

+				}

+			break;

+#if OPENSSL_USE_IPV6 && defined(IPV6_MTU)

+		case AF_INET6:

+			if ((ret = getsockopt(b->num, IPPROTO_IPV6, IPV6_MTU, (void *)&sockopt_val,

+				&sockopt_len)) < 0 || sockopt_val < 0)

+				{

+				ret = 0;

+				}

+			else

+				{

+				/* we assume that the transport protocol is UDP and no

+				 * IPV6 options are used.

+				 */

+				data->mtu = sockopt_val - 8 - 40;

+				ret = data->mtu;

+				}

+			break;

+#endif

+		default:

+			ret = 0;

+			break;

+			}

+#else

+		ret = 0;

+#endif

+		break;

+	case BIO_CTRL_DGRAM_GET_MTU:

+		return data->mtu;

+		break;

+	case BIO_CTRL_DGRAM_SET_MTU:

+		data->mtu = num;

+		ret = num;

+		break;

+	case BIO_CTRL_DGRAM_SET_CONNECTED:

+		to = (struct sockaddr *)ptr;

+

+		if ( to != NULL)

+			{

+			data->connected = 1;

+			switch (to->sa_family)

+				{

+				case AF_INET:

+					memcpy(&data->peer,to,sizeof(data->peer.sa_in));

+					break;

+#if OPENSSL_USE_IPV6

+				case AF_INET6:

+					memcpy(&data->peer,to,sizeof(data->peer.sa_in6));

+					break;

+#endif

+				default:

+					memcpy(&data->peer,to,sizeof(data->peer.sa));

+					break;

+				}

+			}

+		else

+			{

+			data->connected = 0;

+			memset(&(data->peer), 0x00, sizeof(data->peer));

+			}

+		break;

+	case BIO_CTRL_DGRAM_GET_PEER:

+		switch (data->peer.sa.sa_family)

+			{

+			case AF_INET:

+				ret=sizeof(data->peer.sa_in);

+				break;

+#if OPENSSL_USE_IPV6

+			case AF_INET6:

+				ret=sizeof(data->peer.sa_in6);

+				break;

+#endif

+			default:

+				ret=sizeof(data->peer.sa);

+				break;

+			}

+		if (num==0 || num>ret)

+			num=ret;

+		memcpy(ptr,&data->peer,(ret=num));

+		break;

+	case BIO_CTRL_DGRAM_SET_PEER:

+		to = (struct sockaddr *) ptr;

+		switch (to->sa_family)

+			{

+			case AF_INET:

+				memcpy(&data->peer,to,sizeof(data->peer.sa_in));

+				break;

+#if OPENSSL_USE_IPV6

+			case AF_INET6:

+				memcpy(&data->peer,to,sizeof(data->peer.sa_in6));

+				break;

+#endif

+			default:

+				memcpy(&data->peer,to,sizeof(data->peer.sa));

+				break;

+			}

+		break;

+	case BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT:

+		memcpy(&(data->next_timeout), ptr, sizeof(struct timeval));

+		break;

+#if defined(SO_RCVTIMEO)

+	case BIO_CTRL_DGRAM_SET_RECV_TIMEOUT:

+#ifdef OPENSSL_SYS_WINDOWS

+		{

+		struct timeval *tv = (struct timeval *)ptr;

+		int timeout = tv->tv_sec * 1000 + tv->tv_usec/1000;

+		if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,

+			(void*)&timeout, sizeof(timeout)) < 0)

+			{ perror("setsockopt"); ret = -1; }

+		}

+#else

+		if ( setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, ptr,

+			sizeof(struct timeval)) < 0)

+			{ perror("setsockopt");	ret = -1; }

+#endif

+		break;

+	case BIO_CTRL_DGRAM_GET_RECV_TIMEOUT:

+#ifdef OPENSSL_SYS_WINDOWS

+		{

+		int timeout, sz = sizeof(timeout);

+		struct timeval *tv = (struct timeval *)ptr;

+		if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,

+			(void*)&timeout, &sz) < 0)

+			{ perror("getsockopt"); ret = -1; }

+		else

+			{

+			tv->tv_sec = timeout / 1000;

+			tv->tv_usec = (timeout % 1000) * 1000;

+			ret = sizeof(*tv);

+			}

+		}

+#else

+		if ( getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, 

+			ptr, (void *)&ret) < 0)

+			{ perror("getsockopt"); ret = -1; }

+#endif

+		break;

+#endif

+#if defined(SO_SNDTIMEO)

+	case BIO_CTRL_DGRAM_SET_SEND_TIMEOUT:

+#ifdef OPENSSL_SYS_WINDOWS

+		{

+		struct timeval *tv = (struct timeval *)ptr;

+		int timeout = tv->tv_sec * 1000 + tv->tv_usec/1000;

+		if (setsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO,

+			(void*)&timeout, sizeof(timeout)) < 0)

+			{ perror("setsockopt"); ret = -1; }

+		}

+#else

+		if ( setsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO, ptr,

+			sizeof(struct timeval)) < 0)

+			{ perror("setsockopt");	ret = -1; }

+#endif

+		break;

+	case BIO_CTRL_DGRAM_GET_SEND_TIMEOUT:

+#ifdef OPENSSL_SYS_WINDOWS

+		{

+		int timeout, sz = sizeof(timeout);

+		struct timeval *tv = (struct timeval *)ptr;

+		if (getsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO,

+			(void*)&timeout, &sz) < 0)

+			{ perror("getsockopt"); ret = -1; }

+		else

+			{

+			tv->tv_sec = timeout / 1000;

+			tv->tv_usec = (timeout % 1000) * 1000;

+			ret = sizeof(*tv);

+			}

+		}

+#else

+		if ( getsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO, 

+			ptr, (void *)&ret) < 0)

+			{ perror("getsockopt"); ret = -1; }

+#endif

+		break;

+#endif

+	case BIO_CTRL_DGRAM_GET_SEND_TIMER_EXP:

+		/* fall-through */

+	case BIO_CTRL_DGRAM_GET_RECV_TIMER_EXP:

+#ifdef OPENSSL_SYS_WINDOWS

+		if ( data->_errno == WSAETIMEDOUT)

+#else

+		if ( data->_errno == EAGAIN)

+#endif

+			{

+			ret = 1;

+			data->_errno = 0;

+			}

+		else

+			ret = 0;

+		break;

+#ifdef EMSGSIZE

+	case BIO_CTRL_DGRAM_MTU_EXCEEDED:

+		if ( data->_errno == EMSGSIZE)

+			{

+			ret = 1;

+			data->_errno = 0;

+			}

+		else

+			ret = 0;

+		break;

+#endif

+	default:

+		ret=0;

+		break;

+		}

+	return(ret);

+	}

+

+static int dgram_puts(BIO *bp, const char *str)

+	{

+	int n,ret;

+

+	n=strlen(str);

+	ret=dgram_write(bp,str,n);

+	return(ret);

+	}

+

+static int BIO_dgram_should_retry(int i)

+	{

+	int err;

+

+	if ((i == 0) || (i == -1))

+		{

+		err=get_last_socket_error();

+

+#if defined(OPENSSL_SYS_WINDOWS) && 0 /* more microsoft stupidity? perhaps not? Ben 4/1/99 */

+		if ((i == -1) && (err == 0))

+			return(1);

+#endif

+

+		return(BIO_dgram_non_fatal_error(err));

+		}

+	return(0);

+	}

+

+int BIO_dgram_non_fatal_error(int err)

+	{

+	switch (err)

+		{

+#if defined(OPENSSL_SYS_WINDOWS)

+# if defined(WSAEWOULDBLOCK)

+	case WSAEWOULDBLOCK:

+# endif

+

+# if 0 /* This appears to always be an error */

+#  if defined(WSAENOTCONN)

+	case WSAENOTCONN:

+#  endif

+# endif

+#endif

+

+#ifdef EWOULDBLOCK

+# ifdef WSAEWOULDBLOCK

+#  if WSAEWOULDBLOCK != EWOULDBLOCK

+	case EWOULDBLOCK:

+#  endif

+# else

+	case EWOULDBLOCK:

+# endif

+#endif

+

+#ifdef EINTR

+	case EINTR:

+#endif

+

+#ifdef EAGAIN

+#if EWOULDBLOCK != EAGAIN

+	case EAGAIN:

+# endif

+#endif

+

+#ifdef EPROTO

+	case EPROTO:

+#endif

+

+#ifdef EINPROGRESS

+	case EINPROGRESS:

+#endif

+

+#ifdef EALREADY

+	case EALREADY:

+#endif

+

+		return(1);

+		/* break; */

+	default:

+		break;

+		}

+	return(0);

+	}

+#endif

+

+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

+	}