diff options
Diffstat (limited to 'openssl/trunk/crypto/bio/bss_dgram.c')
-rw-r--r-- | openssl/trunk/crypto/bio/bss_dgram.c | 484 |
1 files changed, 0 insertions, 484 deletions
diff --git a/openssl/trunk/crypto/bio/bss_dgram.c b/openssl/trunk/crypto/bio/bss_dgram.c deleted file mode 100644 index a0cb29b3..00000000 --- a/openssl/trunk/crypto/bio/bss_dgram.c +++ /dev/null @@ -1,484 +0,0 @@ -/* 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> - -#define IP_MTU 14 /* linux is lame */ - -#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); - -int BIO_dgram_should_retry(int s); - -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 - { - struct sockaddr peer; - unsigned int connected; - unsigned int _errno; - unsigned int mtu; - } 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 int dgram_read(BIO *b, char *out, int outl) - { - int ret=0; - bio_dgram_data *data = (bio_dgram_data *)b->ptr; - - struct sockaddr peer; - int peerlen = sizeof(peer); - - if (out != NULL) - { - clear_socket_error(); - memset(&peer, 0x00, peerlen); - /* Last arg in recvfrom is signed on some platforms and - * unsigned on others. It is of type socklen_t on some - * but this is not universal. Cast to (void *) to avoid - * compiler warnings. - */ - ret=recvfrom(b->num,out,outl,0,&peer,(void *)&peerlen); - - if ( ! data->connected && ret > 0) - BIO_ctrl(b, BIO_CTRL_DGRAM_CONNECT, 0, &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=send(b->num,in,inl,0); - else - ret=sendto(b->num, in, inl, 0, &data->peer, sizeof(data->peer)); - - BIO_clear_retry_flags(b); - if (ret <= 0) - { - if (BIO_sock_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; - long sockopt_val = 0; - unsigned int sockopt_len = 0; - - 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 - memcpy(&(data->peer),to, sizeof(struct sockaddr)); -#if 0 - } -#endif - break; - /* (Linux)kernel sets DF bit on outgoing IP packets */ -#ifdef IP_MTU_DISCOVER - case BIO_CTRL_DGRAM_MTU_DISCOVER: - sockopt_val = IP_PMTUDISC_DO; - if ((ret = setsockopt(b->num, IPPROTO_IP, IP_MTU_DISCOVER, - &sockopt_val, sizeof(sockopt_val))) < 0) - perror("setsockopt"); - break; -#endif - case BIO_CTRL_DGRAM_QUERY_MTU: - sockopt_len = sizeof(sockopt_val); - if ((ret = getsockopt(b->num, IPPROTO_IP, IP_MTU, (void *)&sockopt_val, - &sockopt_len)) < 0 || sockopt_val < 0) - { ret = 0; } - else - { - data->mtu = sockopt_val; - ret = data->mtu; - } - 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; - memcpy(&(data->peer),to, sizeof(struct sockaddr)); - } - else - { - data->connected = 0; - memset(&(data->peer), 0x00, sizeof(struct sockaddr)); - } - break; - case BIO_CTRL_DGRAM_SET_PEER: - to = (struct sockaddr *) ptr; - - memcpy(&(data->peer), to, sizeof(struct sockaddr)); - break; - case BIO_CTRL_DGRAM_SET_RECV_TIMEOUT: - if ( setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, ptr, - sizeof(struct timeval)) < 0) - { perror("setsockopt"); ret = -1; } - break; - case BIO_CTRL_DGRAM_GET_RECV_TIMEOUT: - if ( getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, - ptr, (void *)&ret) < 0) - { perror("getsockopt"); ret = -1; } - break; - case BIO_CTRL_DGRAM_SET_SEND_TIMEOUT: - if ( setsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO, ptr, - sizeof(struct timeval)) < 0) - { perror("setsockopt"); ret = -1; } - break; - case BIO_CTRL_DGRAM_GET_SEND_TIMEOUT: - if ( getsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO, - ptr, (void *)&ret) < 0) - { perror("getsockopt"); ret = -1; } - break; - case BIO_CTRL_DGRAM_GET_SEND_TIMER_EXP: - /* fall-through */ - case BIO_CTRL_DGRAM_GET_RECV_TIMER_EXP: - if ( data->_errno == EAGAIN) - { - 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); - } - -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 - -#if defined(ENOTCONN) - case ENOTCONN: -#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 - -/* DF bit set, and packet larger than MTU */ -#ifdef EMSGSIZE - case EMSGSIZE: -#endif - - return(1); - /* break; */ - default: - break; - } - return(0); - } -#endif |