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Diffstat (limited to 'openssl/crypto/bio/bss_dgram.c')
-rw-r--r--openssl/crypto/bio/bss_dgram.c1660
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
+ }
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-15 18:12:58 +0000