2011 lines
59 KiB
C
2011 lines
59 KiB
C
/* crypto/bio/bio_dgram.c */
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/*
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* DTLS implementation written by Nagendra Modadugu
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* (nagendra@cs.stanford.edu) for the OpenSSL project 2005.
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*/
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/* ====================================================================
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* Copyright (c) 1999-2005 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* openssl-core@OpenSSL.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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#include <stdio.h>
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#include <errno.h>
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#define USE_SOCKETS
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#include "cryptlib.h"
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#include <openssl/bio.h>
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#ifndef OPENSSL_NO_DGRAM
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# if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_VMS)
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# include <sys/timeb.h>
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# endif
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# ifndef OPENSSL_NO_SCTP
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# include <netinet/sctp.h>
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# include <fcntl.h>
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# define OPENSSL_SCTP_DATA_CHUNK_TYPE 0x00
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# define OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE 0xc0
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# endif
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# if defined(OPENSSL_SYS_LINUX) && !defined(IP_MTU)
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# define IP_MTU 14 /* linux is lame */
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# endif
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# if defined(__FreeBSD__) && defined(IN6_IS_ADDR_V4MAPPED)
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/* Standard definition causes type-punning problems. */
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# undef IN6_IS_ADDR_V4MAPPED
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# define s6_addr32 __u6_addr.__u6_addr32
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# define IN6_IS_ADDR_V4MAPPED(a) \
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(((a)->s6_addr32[0] == 0) && \
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((a)->s6_addr32[1] == 0) && \
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((a)->s6_addr32[2] == htonl(0x0000ffff)))
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# endif
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# ifdef WATT32
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# define sock_write SockWrite /* Watt-32 uses same names */
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# define sock_read SockRead
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# define sock_puts SockPuts
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# endif
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static int dgram_write(BIO *h, const char *buf, int num);
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static int dgram_read(BIO *h, char *buf, int size);
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static int dgram_puts(BIO *h, const char *str);
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static long dgram_ctrl(BIO *h, int cmd, long arg1, void *arg2);
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static int dgram_new(BIO *h);
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static int dgram_free(BIO *data);
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static int dgram_clear(BIO *bio);
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# ifndef OPENSSL_NO_SCTP
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static int dgram_sctp_write(BIO *h, const char *buf, int num);
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static int dgram_sctp_read(BIO *h, char *buf, int size);
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static int dgram_sctp_puts(BIO *h, const char *str);
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static long dgram_sctp_ctrl(BIO *h, int cmd, long arg1, void *arg2);
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static int dgram_sctp_new(BIO *h);
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static int dgram_sctp_free(BIO *data);
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# ifdef SCTP_AUTHENTICATION_EVENT
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static void dgram_sctp_handle_auth_free_key_event(BIO *b, union sctp_notification
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*snp);
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# endif
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# endif
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static int BIO_dgram_should_retry(int s);
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static void get_current_time(struct timeval *t);
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static BIO_METHOD methods_dgramp = {
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BIO_TYPE_DGRAM,
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"datagram socket",
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dgram_write,
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dgram_read,
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dgram_puts,
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NULL, /* dgram_gets, */
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dgram_ctrl,
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dgram_new,
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dgram_free,
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NULL,
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};
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# ifndef OPENSSL_NO_SCTP
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static BIO_METHOD methods_dgramp_sctp = {
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BIO_TYPE_DGRAM_SCTP,
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"datagram sctp socket",
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dgram_sctp_write,
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dgram_sctp_read,
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dgram_sctp_puts,
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NULL, /* dgram_gets, */
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dgram_sctp_ctrl,
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dgram_sctp_new,
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dgram_sctp_free,
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NULL,
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};
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# endif
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typedef struct bio_dgram_data_st {
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union {
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struct sockaddr sa;
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struct sockaddr_in sa_in;
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# if OPENSSL_USE_IPV6
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struct sockaddr_in6 sa_in6;
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# endif
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} peer;
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unsigned int connected;
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unsigned int _errno;
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unsigned int mtu;
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struct timeval next_timeout;
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struct timeval socket_timeout;
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} bio_dgram_data;
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# ifndef OPENSSL_NO_SCTP
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typedef struct bio_dgram_sctp_save_message_st {
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BIO *bio;
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char *data;
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int length;
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} bio_dgram_sctp_save_message;
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typedef struct bio_dgram_sctp_data_st {
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union {
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struct sockaddr sa;
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struct sockaddr_in sa_in;
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# if OPENSSL_USE_IPV6
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struct sockaddr_in6 sa_in6;
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# endif
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} peer;
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unsigned int connected;
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unsigned int _errno;
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unsigned int mtu;
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struct bio_dgram_sctp_sndinfo sndinfo;
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struct bio_dgram_sctp_rcvinfo rcvinfo;
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struct bio_dgram_sctp_prinfo prinfo;
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void (*handle_notifications) (BIO *bio, void *context, void *buf);
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void *notification_context;
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int in_handshake;
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int ccs_rcvd;
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int ccs_sent;
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int save_shutdown;
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int peer_auth_tested;
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bio_dgram_sctp_save_message saved_message;
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} bio_dgram_sctp_data;
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# endif
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BIO_METHOD *BIO_s_datagram(void)
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{
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return (&methods_dgramp);
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}
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BIO *BIO_new_dgram(int fd, int close_flag)
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{
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BIO *ret;
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ret = BIO_new(BIO_s_datagram());
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if (ret == NULL)
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return (NULL);
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BIO_set_fd(ret, fd, close_flag);
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return (ret);
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}
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static int dgram_new(BIO *bi)
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{
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bio_dgram_data *data = NULL;
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bi->init = 0;
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bi->num = 0;
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data = OPENSSL_malloc(sizeof(bio_dgram_data));
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if (data == NULL)
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return 0;
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memset(data, 0x00, sizeof(bio_dgram_data));
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bi->ptr = data;
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bi->flags = 0;
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return (1);
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}
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static int dgram_free(BIO *a)
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{
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bio_dgram_data *data;
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if (a == NULL)
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return (0);
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if (!dgram_clear(a))
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return 0;
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data = (bio_dgram_data *)a->ptr;
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if (data != NULL)
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OPENSSL_free(data);
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return (1);
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}
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static int dgram_clear(BIO *a)
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{
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if (a == NULL)
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return (0);
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if (a->shutdown) {
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if (a->init) {
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SHUTDOWN2(a->num);
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}
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a->init = 0;
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a->flags = 0;
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}
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return (1);
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}
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static void dgram_adjust_rcv_timeout(BIO *b)
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{
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# if defined(SO_RCVTIMEO)
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bio_dgram_data *data = (bio_dgram_data *)b->ptr;
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union {
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size_t s;
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int i;
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} sz = {
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0
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};
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/* Is a timer active? */
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if (data->next_timeout.tv_sec > 0 || data->next_timeout.tv_usec > 0) {
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struct timeval timenow, timeleft;
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/* Read current socket timeout */
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# ifdef OPENSSL_SYS_WINDOWS
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int timeout;
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sz.i = sizeof(timeout);
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if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
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(void *)&timeout, &sz.i) < 0) {
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perror("getsockopt");
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} else {
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data->socket_timeout.tv_sec = timeout / 1000;
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data->socket_timeout.tv_usec = (timeout % 1000) * 1000;
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}
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# else
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sz.i = sizeof(data->socket_timeout);
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if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
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&(data->socket_timeout), (void *)&sz) < 0) {
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perror("getsockopt");
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} else if (sizeof(sz.s) != sizeof(sz.i) && sz.i == 0)
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OPENSSL_assert(sz.s <= sizeof(data->socket_timeout));
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# endif
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/* Get current time */
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get_current_time(&timenow);
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/* Calculate time left until timer expires */
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memcpy(&timeleft, &(data->next_timeout), sizeof(struct timeval));
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if (timeleft.tv_usec < timenow.tv_usec) {
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timeleft.tv_usec = 1000000 - timenow.tv_usec + timeleft.tv_usec;
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timeleft.tv_sec--;
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} else {
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timeleft.tv_usec -= timenow.tv_usec;
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}
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if (timeleft.tv_sec < timenow.tv_sec) {
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timeleft.tv_sec = 0;
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timeleft.tv_usec = 1;
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} else {
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timeleft.tv_sec -= timenow.tv_sec;
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}
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/*
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* Adjust socket timeout if next handhake message timer will expire
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* earlier.
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*/
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if ((data->socket_timeout.tv_sec == 0
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&& data->socket_timeout.tv_usec == 0)
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|| (data->socket_timeout.tv_sec > timeleft.tv_sec)
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|| (data->socket_timeout.tv_sec == timeleft.tv_sec
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&& data->socket_timeout.tv_usec >= timeleft.tv_usec)) {
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# ifdef OPENSSL_SYS_WINDOWS
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timeout = timeleft.tv_sec * 1000 + timeleft.tv_usec / 1000;
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if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
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(void *)&timeout, sizeof(timeout)) < 0) {
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perror("setsockopt");
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}
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# else
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if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, &timeleft,
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sizeof(struct timeval)) < 0) {
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perror("setsockopt");
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}
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# endif
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}
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}
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# endif
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}
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static void dgram_reset_rcv_timeout(BIO *b)
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{
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# if defined(SO_RCVTIMEO)
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bio_dgram_data *data = (bio_dgram_data *)b->ptr;
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/* Is a timer active? */
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if (data->next_timeout.tv_sec > 0 || data->next_timeout.tv_usec > 0) {
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# ifdef OPENSSL_SYS_WINDOWS
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int timeout = data->socket_timeout.tv_sec * 1000 +
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data->socket_timeout.tv_usec / 1000;
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if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
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(void *)&timeout, sizeof(timeout)) < 0) {
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perror("setsockopt");
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}
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# else
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if (setsockopt
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(b->num, SOL_SOCKET, SO_RCVTIMEO, &(data->socket_timeout),
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sizeof(struct timeval)) < 0) {
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perror("setsockopt");
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}
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# endif
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}
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# endif
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}
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static int dgram_read(BIO *b, char *out, int outl)
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{
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int ret = 0;
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bio_dgram_data *data = (bio_dgram_data *)b->ptr;
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struct {
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/*
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* See commentary in b_sock.c. <appro>
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*/
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union {
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size_t s;
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int i;
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} len;
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union {
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struct sockaddr sa;
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struct sockaddr_in sa_in;
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# if OPENSSL_USE_IPV6
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struct sockaddr_in6 sa_in6;
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# endif
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} peer;
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} sa;
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sa.len.s = 0;
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sa.len.i = sizeof(sa.peer);
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if (out != NULL) {
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clear_socket_error();
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memset(&sa.peer, 0x00, sizeof(sa.peer));
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dgram_adjust_rcv_timeout(b);
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ret = recvfrom(b->num, out, outl, 0, &sa.peer.sa, (void *)&sa.len);
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if (sizeof(sa.len.i) != sizeof(sa.len.s) && sa.len.i == 0) {
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OPENSSL_assert(sa.len.s <= sizeof(sa.peer));
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sa.len.i = (int)sa.len.s;
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}
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if (!data->connected && ret >= 0)
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BIO_ctrl(b, BIO_CTRL_DGRAM_SET_PEER, 0, &sa.peer);
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BIO_clear_retry_flags(b);
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if (ret < 0) {
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if (BIO_dgram_should_retry(ret)) {
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BIO_set_retry_read(b);
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data->_errno = get_last_socket_error();
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}
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}
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dgram_reset_rcv_timeout(b);
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}
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return (ret);
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}
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static int dgram_write(BIO *b, const char *in, int inl)
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{
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int ret;
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bio_dgram_data *data = (bio_dgram_data *)b->ptr;
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clear_socket_error();
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if (data->connected)
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ret = writesocket(b->num, in, inl);
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else {
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int peerlen = sizeof(data->peer);
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if (data->peer.sa.sa_family == AF_INET)
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peerlen = sizeof(data->peer.sa_in);
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# if OPENSSL_USE_IPV6
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else if (data->peer.sa.sa_family == AF_INET6)
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peerlen = sizeof(data->peer.sa_in6);
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# endif
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# if defined(NETWARE_CLIB) && defined(NETWARE_BSDSOCK)
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ret = sendto(b->num, (char *)in, inl, 0, &data->peer.sa, peerlen);
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# else
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ret = sendto(b->num, in, inl, 0, &data->peer.sa, peerlen);
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# endif
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}
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BIO_clear_retry_flags(b);
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if (ret <= 0) {
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if (BIO_dgram_should_retry(ret)) {
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BIO_set_retry_write(b);
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data->_errno = get_last_socket_error();
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# if 0 /* higher layers are responsible for querying
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* MTU, if necessary */
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if (data->_errno == EMSGSIZE)
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/* retrieve the new MTU */
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BIO_ctrl(b, BIO_CTRL_DGRAM_QUERY_MTU, 0, NULL);
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# endif
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}
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}
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return (ret);
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}
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static long dgram_get_mtu_overhead(bio_dgram_data *data)
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{
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long ret;
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switch (data->peer.sa.sa_family) {
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case AF_INET:
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/*
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* Assume this is UDP - 20 bytes for IP, 8 bytes for UDP
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*/
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ret = 28;
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break;
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# if OPENSSL_USE_IPV6
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case AF_INET6:
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# ifdef IN6_IS_ADDR_V4MAPPED
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if (IN6_IS_ADDR_V4MAPPED(&data->peer.sa_in6.sin6_addr))
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/*
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* Assume this is UDP - 20 bytes for IP, 8 bytes for UDP
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*/
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ret = 28;
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else
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# endif
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/*
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* Assume this is UDP - 40 bytes for IP, 8 bytes for UDP
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*/
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ret = 48;
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break;
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# endif
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default:
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/* We don't know. Go with the historical default */
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ret = 28;
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break;
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}
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return ret;
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}
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static long dgram_ctrl(BIO *b, int cmd, long num, void *ptr)
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{
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long ret = 1;
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int *ip;
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struct sockaddr *to = NULL;
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bio_dgram_data *data = NULL;
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# if defined(OPENSSL_SYS_LINUX) && (defined(IP_MTU_DISCOVER) || defined(IP_MTU))
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int sockopt_val = 0;
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socklen_t sockopt_len; /* assume that system supporting IP_MTU is
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* modern enough to define socklen_t */
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socklen_t addr_len;
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union {
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struct sockaddr sa;
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struct sockaddr_in s4;
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# if OPENSSL_USE_IPV6
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struct sockaddr_in6 s6;
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# endif
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} addr;
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# endif
|
|
|
|
data = (bio_dgram_data *)b->ptr;
|
|
|
|
switch (cmd) {
|
|
case BIO_CTRL_RESET:
|
|
num = 0;
|
|
ret = 0;
|
|
break;
|
|
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:
|
|
# if defined(OPENSSL_SYS_LINUX) && defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DO)
|
|
addr_len = (socklen_t) sizeof(addr);
|
|
memset((void *)&addr, 0, sizeof(addr));
|
|
if (getsockname(b->num, &addr.sa, &addr_len) < 0) {
|
|
ret = 0;
|
|
break;
|
|
}
|
|
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) && defined(IPV6_PMTUDISC_DO)
|
|
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:
|
|
# if defined(OPENSSL_SYS_LINUX) && defined(IP_MTU)
|
|
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_FALLBACK_MTU:
|
|
ret = -dgram_get_mtu_overhead(data);
|
|
switch (data->peer.sa.sa_family) {
|
|
case AF_INET:
|
|
ret += 576;
|
|
break;
|
|
# if OPENSSL_USE_IPV6
|
|
case AF_INET6:
|
|
# ifdef IN6_IS_ADDR_V4MAPPED
|
|
if (IN6_IS_ADDR_V4MAPPED(&data->peer.sa_in6.sin6_addr))
|
|
ret += 576;
|
|
else
|
|
# endif
|
|
ret += 1280;
|
|
break;
|
|
# endif
|
|
default:
|
|
ret += 576;
|
|
break;
|
|
}
|
|
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:
|
|
{
|
|
union {
|
|
size_t s;
|
|
int i;
|
|
} sz = {
|
|
0
|
|
};
|
|
# ifdef OPENSSL_SYS_WINDOWS
|
|
int timeout;
|
|
struct timeval *tv = (struct timeval *)ptr;
|
|
|
|
sz.i = sizeof(timeout);
|
|
if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
|
|
(void *)&timeout, &sz.i) < 0) {
|
|
perror("getsockopt");
|
|
ret = -1;
|
|
} else {
|
|
tv->tv_sec = timeout / 1000;
|
|
tv->tv_usec = (timeout % 1000) * 1000;
|
|
ret = sizeof(*tv);
|
|
}
|
|
# else
|
|
sz.i = sizeof(struct timeval);
|
|
if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
|
|
ptr, (void *)&sz) < 0) {
|
|
perror("getsockopt");
|
|
ret = -1;
|
|
} else if (sizeof(sz.s) != sizeof(sz.i) && sz.i == 0) {
|
|
OPENSSL_assert(sz.s <= sizeof(struct timeval));
|
|
ret = (int)sz.s;
|
|
} else
|
|
ret = sz.i;
|
|
# 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:
|
|
{
|
|
union {
|
|
size_t s;
|
|
int i;
|
|
} sz = {
|
|
0
|
|
};
|
|
# ifdef OPENSSL_SYS_WINDOWS
|
|
int timeout;
|
|
struct timeval *tv = (struct timeval *)ptr;
|
|
|
|
sz.i = sizeof(timeout);
|
|
if (getsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO,
|
|
(void *)&timeout, &sz.i) < 0) {
|
|
perror("getsockopt");
|
|
ret = -1;
|
|
} else {
|
|
tv->tv_sec = timeout / 1000;
|
|
tv->tv_usec = (timeout % 1000) * 1000;
|
|
ret = sizeof(*tv);
|
|
}
|
|
# else
|
|
sz.i = sizeof(struct timeval);
|
|
if (getsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO,
|
|
ptr, (void *)&sz) < 0) {
|
|
perror("getsockopt");
|
|
ret = -1;
|
|
} else if (sizeof(sz.s) != sizeof(sz.i) && sz.i == 0) {
|
|
OPENSSL_assert(sz.s <= sizeof(struct timeval));
|
|
ret = (int)sz.s;
|
|
} else
|
|
ret = sz.i;
|
|
# 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
|
|
case BIO_CTRL_DGRAM_GET_MTU_OVERHEAD:
|
|
ret = dgram_get_mtu_overhead(data);
|
|
break;
|
|
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);
|
|
}
|
|
|
|
# ifndef OPENSSL_NO_SCTP
|
|
BIO_METHOD *BIO_s_datagram_sctp(void)
|
|
{
|
|
return (&methods_dgramp_sctp);
|
|
}
|
|
|
|
BIO *BIO_new_dgram_sctp(int fd, int close_flag)
|
|
{
|
|
BIO *bio;
|
|
int ret, optval = 20000;
|
|
int auth_data = 0, auth_forward = 0;
|
|
unsigned char *p;
|
|
struct sctp_authchunk auth;
|
|
struct sctp_authchunks *authchunks;
|
|
socklen_t sockopt_len;
|
|
# ifdef SCTP_AUTHENTICATION_EVENT
|
|
# ifdef SCTP_EVENT
|
|
struct sctp_event event;
|
|
# else
|
|
struct sctp_event_subscribe event;
|
|
# endif
|
|
# endif
|
|
|
|
bio = BIO_new(BIO_s_datagram_sctp());
|
|
if (bio == NULL)
|
|
return (NULL);
|
|
BIO_set_fd(bio, fd, close_flag);
|
|
|
|
/* Activate SCTP-AUTH for DATA and FORWARD-TSN chunks */
|
|
auth.sauth_chunk = OPENSSL_SCTP_DATA_CHUNK_TYPE;
|
|
ret =
|
|
setsockopt(fd, IPPROTO_SCTP, SCTP_AUTH_CHUNK, &auth,
|
|
sizeof(struct sctp_authchunk));
|
|
if (ret < 0) {
|
|
BIO_vfree(bio);
|
|
return (NULL);
|
|
}
|
|
auth.sauth_chunk = OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE;
|
|
ret =
|
|
setsockopt(fd, IPPROTO_SCTP, SCTP_AUTH_CHUNK, &auth,
|
|
sizeof(struct sctp_authchunk));
|
|
if (ret < 0) {
|
|
BIO_vfree(bio);
|
|
return (NULL);
|
|
}
|
|
|
|
/*
|
|
* Test if activation was successful. When using accept(), SCTP-AUTH has
|
|
* to be activated for the listening socket already, otherwise the
|
|
* connected socket won't use it.
|
|
*/
|
|
sockopt_len = (socklen_t) (sizeof(sctp_assoc_t) + 256 * sizeof(uint8_t));
|
|
authchunks = OPENSSL_malloc(sockopt_len);
|
|
if (!authchunks) {
|
|
BIO_vfree(bio);
|
|
return (NULL);
|
|
}
|
|
memset(authchunks, 0, sizeof(sockopt_len));
|
|
ret =
|
|
getsockopt(fd, IPPROTO_SCTP, SCTP_LOCAL_AUTH_CHUNKS, authchunks,
|
|
&sockopt_len);
|
|
|
|
if (ret < 0) {
|
|
OPENSSL_free(authchunks);
|
|
BIO_vfree(bio);
|
|
return (NULL);
|
|
}
|
|
|
|
for (p = (unsigned char *)authchunks->gauth_chunks;
|
|
p < (unsigned char *)authchunks + sockopt_len;
|
|
p += sizeof(uint8_t)) {
|
|
if (*p == OPENSSL_SCTP_DATA_CHUNK_TYPE)
|
|
auth_data = 1;
|
|
if (*p == OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE)
|
|
auth_forward = 1;
|
|
}
|
|
|
|
OPENSSL_free(authchunks);
|
|
|
|
OPENSSL_assert(auth_data);
|
|
OPENSSL_assert(auth_forward);
|
|
|
|
# ifdef SCTP_AUTHENTICATION_EVENT
|
|
# ifdef SCTP_EVENT
|
|
memset(&event, 0, sizeof(struct sctp_event));
|
|
event.se_assoc_id = 0;
|
|
event.se_type = SCTP_AUTHENTICATION_EVENT;
|
|
event.se_on = 1;
|
|
ret =
|
|
setsockopt(fd, IPPROTO_SCTP, SCTP_EVENT, &event,
|
|
sizeof(struct sctp_event));
|
|
if (ret < 0) {
|
|
BIO_vfree(bio);
|
|
return (NULL);
|
|
}
|
|
# else
|
|
sockopt_len = (socklen_t) sizeof(struct sctp_event_subscribe);
|
|
ret = getsockopt(fd, IPPROTO_SCTP, SCTP_EVENTS, &event, &sockopt_len);
|
|
if (ret < 0) {
|
|
BIO_vfree(bio);
|
|
return (NULL);
|
|
}
|
|
|
|
event.sctp_authentication_event = 1;
|
|
|
|
ret =
|
|
setsockopt(fd, IPPROTO_SCTP, SCTP_EVENTS, &event,
|
|
sizeof(struct sctp_event_subscribe));
|
|
if (ret < 0) {
|
|
BIO_vfree(bio);
|
|
return (NULL);
|
|
}
|
|
# endif
|
|
# endif
|
|
|
|
/*
|
|
* Disable partial delivery by setting the min size larger than the max
|
|
* record size of 2^14 + 2048 + 13
|
|
*/
|
|
ret =
|
|
setsockopt(fd, IPPROTO_SCTP, SCTP_PARTIAL_DELIVERY_POINT, &optval,
|
|
sizeof(optval));
|
|
if (ret < 0) {
|
|
BIO_vfree(bio);
|
|
return (NULL);
|
|
}
|
|
|
|
return (bio);
|
|
}
|
|
|
|
int BIO_dgram_is_sctp(BIO *bio)
|
|
{
|
|
return (BIO_method_type(bio) == BIO_TYPE_DGRAM_SCTP);
|
|
}
|
|
|
|
static int dgram_sctp_new(BIO *bi)
|
|
{
|
|
bio_dgram_sctp_data *data = NULL;
|
|
|
|
bi->init = 0;
|
|
bi->num = 0;
|
|
data = OPENSSL_malloc(sizeof(bio_dgram_sctp_data));
|
|
if (data == NULL)
|
|
return 0;
|
|
memset(data, 0x00, sizeof(bio_dgram_sctp_data));
|
|
# ifdef SCTP_PR_SCTP_NONE
|
|
data->prinfo.pr_policy = SCTP_PR_SCTP_NONE;
|
|
# endif
|
|
bi->ptr = data;
|
|
|
|
bi->flags = 0;
|
|
return (1);
|
|
}
|
|
|
|
static int dgram_sctp_free(BIO *a)
|
|
{
|
|
bio_dgram_sctp_data *data;
|
|
|
|
if (a == NULL)
|
|
return (0);
|
|
if (!dgram_clear(a))
|
|
return 0;
|
|
|
|
data = (bio_dgram_sctp_data *) a->ptr;
|
|
if (data != NULL) {
|
|
if (data->saved_message.data != NULL)
|
|
OPENSSL_free(data->saved_message.data);
|
|
OPENSSL_free(data);
|
|
}
|
|
|
|
return (1);
|
|
}
|
|
|
|
# ifdef SCTP_AUTHENTICATION_EVENT
|
|
void dgram_sctp_handle_auth_free_key_event(BIO *b,
|
|
union sctp_notification *snp)
|
|
{
|
|
int ret;
|
|
struct sctp_authkey_event *authkeyevent = &snp->sn_auth_event;
|
|
|
|
if (authkeyevent->auth_indication == SCTP_AUTH_FREE_KEY) {
|
|
struct sctp_authkeyid authkeyid;
|
|
|
|
/* delete key */
|
|
authkeyid.scact_keynumber = authkeyevent->auth_keynumber;
|
|
ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_DELETE_KEY,
|
|
&authkeyid, sizeof(struct sctp_authkeyid));
|
|
}
|
|
}
|
|
# endif
|
|
|
|
static int dgram_sctp_read(BIO *b, char *out, int outl)
|
|
{
|
|
int ret = 0, n = 0, i, optval;
|
|
socklen_t optlen;
|
|
bio_dgram_sctp_data *data = (bio_dgram_sctp_data *) b->ptr;
|
|
union sctp_notification *snp;
|
|
struct msghdr msg;
|
|
struct iovec iov;
|
|
struct cmsghdr *cmsg;
|
|
char cmsgbuf[512];
|
|
|
|
if (out != NULL) {
|
|
clear_socket_error();
|
|
|
|
do {
|
|
memset(&data->rcvinfo, 0x00,
|
|
sizeof(struct bio_dgram_sctp_rcvinfo));
|
|
iov.iov_base = out;
|
|
iov.iov_len = outl;
|
|
msg.msg_name = NULL;
|
|
msg.msg_namelen = 0;
|
|
msg.msg_iov = &iov;
|
|
msg.msg_iovlen = 1;
|
|
msg.msg_control = cmsgbuf;
|
|
msg.msg_controllen = 512;
|
|
msg.msg_flags = 0;
|
|
n = recvmsg(b->num, &msg, 0);
|
|
|
|
if (n <= 0) {
|
|
if (n < 0)
|
|
ret = n;
|
|
break;
|
|
}
|
|
|
|
if (msg.msg_controllen > 0) {
|
|
for (cmsg = CMSG_FIRSTHDR(&msg); cmsg;
|
|
cmsg = CMSG_NXTHDR(&msg, cmsg)) {
|
|
if (cmsg->cmsg_level != IPPROTO_SCTP)
|
|
continue;
|
|
# ifdef SCTP_RCVINFO
|
|
if (cmsg->cmsg_type == SCTP_RCVINFO) {
|
|
struct sctp_rcvinfo *rcvinfo;
|
|
|
|
rcvinfo = (struct sctp_rcvinfo *)CMSG_DATA(cmsg);
|
|
data->rcvinfo.rcv_sid = rcvinfo->rcv_sid;
|
|
data->rcvinfo.rcv_ssn = rcvinfo->rcv_ssn;
|
|
data->rcvinfo.rcv_flags = rcvinfo->rcv_flags;
|
|
data->rcvinfo.rcv_ppid = rcvinfo->rcv_ppid;
|
|
data->rcvinfo.rcv_tsn = rcvinfo->rcv_tsn;
|
|
data->rcvinfo.rcv_cumtsn = rcvinfo->rcv_cumtsn;
|
|
data->rcvinfo.rcv_context = rcvinfo->rcv_context;
|
|
}
|
|
# endif
|
|
# ifdef SCTP_SNDRCV
|
|
if (cmsg->cmsg_type == SCTP_SNDRCV) {
|
|
struct sctp_sndrcvinfo *sndrcvinfo;
|
|
|
|
sndrcvinfo =
|
|
(struct sctp_sndrcvinfo *)CMSG_DATA(cmsg);
|
|
data->rcvinfo.rcv_sid = sndrcvinfo->sinfo_stream;
|
|
data->rcvinfo.rcv_ssn = sndrcvinfo->sinfo_ssn;
|
|
data->rcvinfo.rcv_flags = sndrcvinfo->sinfo_flags;
|
|
data->rcvinfo.rcv_ppid = sndrcvinfo->sinfo_ppid;
|
|
data->rcvinfo.rcv_tsn = sndrcvinfo->sinfo_tsn;
|
|
data->rcvinfo.rcv_cumtsn = sndrcvinfo->sinfo_cumtsn;
|
|
data->rcvinfo.rcv_context = sndrcvinfo->sinfo_context;
|
|
}
|
|
# endif
|
|
}
|
|
}
|
|
|
|
if (msg.msg_flags & MSG_NOTIFICATION) {
|
|
snp = (union sctp_notification *)out;
|
|
if (snp->sn_header.sn_type == SCTP_SENDER_DRY_EVENT) {
|
|
# ifdef SCTP_EVENT
|
|
struct sctp_event event;
|
|
# else
|
|
struct sctp_event_subscribe event;
|
|
socklen_t eventsize;
|
|
# endif
|
|
/*
|
|
* If a message has been delayed until the socket is dry,
|
|
* it can be sent now.
|
|
*/
|
|
if (data->saved_message.length > 0) {
|
|
dgram_sctp_write(data->saved_message.bio,
|
|
data->saved_message.data,
|
|
data->saved_message.length);
|
|
OPENSSL_free(data->saved_message.data);
|
|
data->saved_message.data = NULL;
|
|
data->saved_message.length = 0;
|
|
}
|
|
|
|
/* disable sender dry event */
|
|
# ifdef SCTP_EVENT
|
|
memset(&event, 0, sizeof(struct sctp_event));
|
|
event.se_assoc_id = 0;
|
|
event.se_type = SCTP_SENDER_DRY_EVENT;
|
|
event.se_on = 0;
|
|
i = setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENT, &event,
|
|
sizeof(struct sctp_event));
|
|
if (i < 0) {
|
|
ret = i;
|
|
break;
|
|
}
|
|
# else
|
|
eventsize = sizeof(struct sctp_event_subscribe);
|
|
i = getsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event,
|
|
&eventsize);
|
|
if (i < 0) {
|
|
ret = i;
|
|
break;
|
|
}
|
|
|
|
event.sctp_sender_dry_event = 0;
|
|
|
|
i = setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event,
|
|
sizeof(struct sctp_event_subscribe));
|
|
if (i < 0) {
|
|
ret = i;
|
|
break;
|
|
}
|
|
# endif
|
|
}
|
|
# ifdef SCTP_AUTHENTICATION_EVENT
|
|
if (snp->sn_header.sn_type == SCTP_AUTHENTICATION_EVENT)
|
|
dgram_sctp_handle_auth_free_key_event(b, snp);
|
|
# endif
|
|
|
|
if (data->handle_notifications != NULL)
|
|
data->handle_notifications(b, data->notification_context,
|
|
(void *)out);
|
|
|
|
memset(out, 0, outl);
|
|
} else
|
|
ret += n;
|
|
}
|
|
while ((msg.msg_flags & MSG_NOTIFICATION) && (msg.msg_flags & MSG_EOR)
|
|
&& (ret < outl));
|
|
|
|
if (ret > 0 && !(msg.msg_flags & MSG_EOR)) {
|
|
/* Partial message read, this should never happen! */
|
|
|
|
/*
|
|
* The buffer was too small, this means the peer sent a message
|
|
* that was larger than allowed.
|
|
*/
|
|
if (ret == outl)
|
|
return -1;
|
|
|
|
/*
|
|
* Test if socket buffer can handle max record size (2^14 + 2048
|
|
* + 13)
|
|
*/
|
|
optlen = (socklen_t) sizeof(int);
|
|
ret = getsockopt(b->num, SOL_SOCKET, SO_RCVBUF, &optval, &optlen);
|
|
if (ret >= 0)
|
|
OPENSSL_assert(optval >= 18445);
|
|
|
|
/*
|
|
* Test if SCTP doesn't partially deliver below max record size
|
|
* (2^14 + 2048 + 13)
|
|
*/
|
|
optlen = (socklen_t) sizeof(int);
|
|
ret =
|
|
getsockopt(b->num, IPPROTO_SCTP, SCTP_PARTIAL_DELIVERY_POINT,
|
|
&optval, &optlen);
|
|
if (ret >= 0)
|
|
OPENSSL_assert(optval >= 18445);
|
|
|
|
/*
|
|
* Partially delivered notification??? Probably a bug....
|
|
*/
|
|
OPENSSL_assert(!(msg.msg_flags & MSG_NOTIFICATION));
|
|
|
|
/*
|
|
* Everything seems ok till now, so it's most likely a message
|
|
* dropped by PR-SCTP.
|
|
*/
|
|
memset(out, 0, outl);
|
|
BIO_set_retry_read(b);
|
|
return -1;
|
|
}
|
|
|
|
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();
|
|
}
|
|
}
|
|
|
|
/* Test if peer uses SCTP-AUTH before continuing */
|
|
if (!data->peer_auth_tested) {
|
|
int ii, auth_data = 0, auth_forward = 0;
|
|
unsigned char *p;
|
|
struct sctp_authchunks *authchunks;
|
|
|
|
optlen =
|
|
(socklen_t) (sizeof(sctp_assoc_t) + 256 * sizeof(uint8_t));
|
|
authchunks = OPENSSL_malloc(optlen);
|
|
if (!authchunks) {
|
|
BIOerr(BIO_F_DGRAM_SCTP_READ, ERR_R_MALLOC_FAILURE);
|
|
return -1;
|
|
}
|
|
memset(authchunks, 0, sizeof(optlen));
|
|
ii = getsockopt(b->num, IPPROTO_SCTP, SCTP_PEER_AUTH_CHUNKS,
|
|
authchunks, &optlen);
|
|
|
|
if (ii >= 0)
|
|
for (p = (unsigned char *)authchunks->gauth_chunks;
|
|
p < (unsigned char *)authchunks + optlen;
|
|
p += sizeof(uint8_t)) {
|
|
if (*p == OPENSSL_SCTP_DATA_CHUNK_TYPE)
|
|
auth_data = 1;
|
|
if (*p == OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE)
|
|
auth_forward = 1;
|
|
}
|
|
|
|
OPENSSL_free(authchunks);
|
|
|
|
if (!auth_data || !auth_forward) {
|
|
BIOerr(BIO_F_DGRAM_SCTP_READ, BIO_R_CONNECT_ERROR);
|
|
return -1;
|
|
}
|
|
|
|
data->peer_auth_tested = 1;
|
|
}
|
|
}
|
|
return (ret);
|
|
}
|
|
|
|
static int dgram_sctp_write(BIO *b, const char *in, int inl)
|
|
{
|
|
int ret;
|
|
bio_dgram_sctp_data *data = (bio_dgram_sctp_data *) b->ptr;
|
|
struct bio_dgram_sctp_sndinfo *sinfo = &(data->sndinfo);
|
|
struct bio_dgram_sctp_prinfo *pinfo = &(data->prinfo);
|
|
struct bio_dgram_sctp_sndinfo handshake_sinfo;
|
|
struct iovec iov[1];
|
|
struct msghdr msg;
|
|
struct cmsghdr *cmsg;
|
|
# if defined(SCTP_SNDINFO) && defined(SCTP_PRINFO)
|
|
char cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndinfo)) +
|
|
CMSG_SPACE(sizeof(struct sctp_prinfo))];
|
|
struct sctp_sndinfo *sndinfo;
|
|
struct sctp_prinfo *prinfo;
|
|
# else
|
|
char cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))];
|
|
struct sctp_sndrcvinfo *sndrcvinfo;
|
|
# endif
|
|
|
|
clear_socket_error();
|
|
|
|
/*
|
|
* If we're send anything else than application data, disable all user
|
|
* parameters and flags.
|
|
*/
|
|
if (in[0] != 23) {
|
|
memset(&handshake_sinfo, 0x00, sizeof(struct bio_dgram_sctp_sndinfo));
|
|
# ifdef SCTP_SACK_IMMEDIATELY
|
|
handshake_sinfo.snd_flags = SCTP_SACK_IMMEDIATELY;
|
|
# endif
|
|
sinfo = &handshake_sinfo;
|
|
}
|
|
|
|
/*
|
|
* If we have to send a shutdown alert message and the socket is not dry
|
|
* yet, we have to save it and send it as soon as the socket gets dry.
|
|
*/
|
|
if (data->save_shutdown && !BIO_dgram_sctp_wait_for_dry(b)) {
|
|
char *tmp;
|
|
data->saved_message.bio = b;
|
|
if (!(tmp = OPENSSL_malloc(inl))) {
|
|
BIOerr(BIO_F_DGRAM_SCTP_WRITE, ERR_R_MALLOC_FAILURE);
|
|
return -1;
|
|
}
|
|
if (data->saved_message.data)
|
|
OPENSSL_free(data->saved_message.data);
|
|
data->saved_message.data = tmp;
|
|
memcpy(data->saved_message.data, in, inl);
|
|
data->saved_message.length = inl;
|
|
return inl;
|
|
}
|
|
|
|
iov[0].iov_base = (char *)in;
|
|
iov[0].iov_len = inl;
|
|
msg.msg_name = NULL;
|
|
msg.msg_namelen = 0;
|
|
msg.msg_iov = iov;
|
|
msg.msg_iovlen = 1;
|
|
msg.msg_control = (caddr_t) cmsgbuf;
|
|
msg.msg_controllen = 0;
|
|
msg.msg_flags = 0;
|
|
# if defined(SCTP_SNDINFO) && defined(SCTP_PRINFO)
|
|
cmsg = (struct cmsghdr *)cmsgbuf;
|
|
cmsg->cmsg_level = IPPROTO_SCTP;
|
|
cmsg->cmsg_type = SCTP_SNDINFO;
|
|
cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndinfo));
|
|
sndinfo = (struct sctp_sndinfo *)CMSG_DATA(cmsg);
|
|
memset(sndinfo, 0, sizeof(struct sctp_sndinfo));
|
|
sndinfo->snd_sid = sinfo->snd_sid;
|
|
sndinfo->snd_flags = sinfo->snd_flags;
|
|
sndinfo->snd_ppid = sinfo->snd_ppid;
|
|
sndinfo->snd_context = sinfo->snd_context;
|
|
msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndinfo));
|
|
|
|
cmsg =
|
|
(struct cmsghdr *)&cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndinfo))];
|
|
cmsg->cmsg_level = IPPROTO_SCTP;
|
|
cmsg->cmsg_type = SCTP_PRINFO;
|
|
cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_prinfo));
|
|
prinfo = (struct sctp_prinfo *)CMSG_DATA(cmsg);
|
|
memset(prinfo, 0, sizeof(struct sctp_prinfo));
|
|
prinfo->pr_policy = pinfo->pr_policy;
|
|
prinfo->pr_value = pinfo->pr_value;
|
|
msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_prinfo));
|
|
# else
|
|
cmsg = (struct cmsghdr *)cmsgbuf;
|
|
cmsg->cmsg_level = IPPROTO_SCTP;
|
|
cmsg->cmsg_type = SCTP_SNDRCV;
|
|
cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo));
|
|
sndrcvinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg);
|
|
memset(sndrcvinfo, 0, sizeof(struct sctp_sndrcvinfo));
|
|
sndrcvinfo->sinfo_stream = sinfo->snd_sid;
|
|
sndrcvinfo->sinfo_flags = sinfo->snd_flags;
|
|
# ifdef __FreeBSD__
|
|
sndrcvinfo->sinfo_flags |= pinfo->pr_policy;
|
|
# endif
|
|
sndrcvinfo->sinfo_ppid = sinfo->snd_ppid;
|
|
sndrcvinfo->sinfo_context = sinfo->snd_context;
|
|
sndrcvinfo->sinfo_timetolive = pinfo->pr_value;
|
|
msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndrcvinfo));
|
|
# endif
|
|
|
|
ret = sendmsg(b->num, &msg, 0);
|
|
|
|
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();
|
|
}
|
|
}
|
|
return (ret);
|
|
}
|
|
|
|
static long dgram_sctp_ctrl(BIO *b, int cmd, long num, void *ptr)
|
|
{
|
|
long ret = 1;
|
|
bio_dgram_sctp_data *data = NULL;
|
|
socklen_t sockopt_len = 0;
|
|
struct sctp_authkeyid authkeyid;
|
|
struct sctp_authkey *authkey = NULL;
|
|
|
|
data = (bio_dgram_sctp_data *) b->ptr;
|
|
|
|
switch (cmd) {
|
|
case BIO_CTRL_DGRAM_QUERY_MTU:
|
|
/*
|
|
* Set to maximum (2^14) and ignore user input to enable transport
|
|
* protocol fragmentation. Returns always 2^14.
|
|
*/
|
|
data->mtu = 16384;
|
|
ret = data->mtu;
|
|
break;
|
|
case BIO_CTRL_DGRAM_SET_MTU:
|
|
/*
|
|
* Set to maximum (2^14) and ignore input to enable transport
|
|
* protocol fragmentation. Returns always 2^14.
|
|
*/
|
|
data->mtu = 16384;
|
|
ret = data->mtu;
|
|
break;
|
|
case BIO_CTRL_DGRAM_SET_CONNECTED:
|
|
case BIO_CTRL_DGRAM_CONNECT:
|
|
/* Returns always -1. */
|
|
ret = -1;
|
|
break;
|
|
case BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT:
|
|
/*
|
|
* SCTP doesn't need the DTLS timer Returns always 1.
|
|
*/
|
|
break;
|
|
case BIO_CTRL_DGRAM_GET_MTU_OVERHEAD:
|
|
/*
|
|
* We allow transport protocol fragmentation so this is irrelevant
|
|
*/
|
|
ret = 0;
|
|
break;
|
|
case BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE:
|
|
if (num > 0)
|
|
data->in_handshake = 1;
|
|
else
|
|
data->in_handshake = 0;
|
|
|
|
ret =
|
|
setsockopt(b->num, IPPROTO_SCTP, SCTP_NODELAY,
|
|
&data->in_handshake, sizeof(int));
|
|
break;
|
|
case BIO_CTRL_DGRAM_SCTP_ADD_AUTH_KEY:
|
|
/*
|
|
* New shared key for SCTP AUTH. Returns 0 on success, -1 otherwise.
|
|
*/
|
|
|
|
/* Get active key */
|
|
sockopt_len = sizeof(struct sctp_authkeyid);
|
|
ret =
|
|
getsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY, &authkeyid,
|
|
&sockopt_len);
|
|
if (ret < 0)
|
|
break;
|
|
|
|
/* Add new key */
|
|
sockopt_len = sizeof(struct sctp_authkey) + 64 * sizeof(uint8_t);
|
|
authkey = OPENSSL_malloc(sockopt_len);
|
|
if (authkey == NULL) {
|
|
ret = -1;
|
|
break;
|
|
}
|
|
memset(authkey, 0x00, sockopt_len);
|
|
authkey->sca_keynumber = authkeyid.scact_keynumber + 1;
|
|
# ifndef __FreeBSD__
|
|
/*
|
|
* This field is missing in FreeBSD 8.2 and earlier, and FreeBSD 8.3
|
|
* and higher work without it.
|
|
*/
|
|
authkey->sca_keylength = 64;
|
|
# endif
|
|
memcpy(&authkey->sca_key[0], ptr, 64 * sizeof(uint8_t));
|
|
|
|
ret =
|
|
setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_KEY, authkey,
|
|
sockopt_len);
|
|
OPENSSL_free(authkey);
|
|
authkey = NULL;
|
|
if (ret < 0)
|
|
break;
|
|
|
|
/* Reset active key */
|
|
ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY,
|
|
&authkeyid, sizeof(struct sctp_authkeyid));
|
|
if (ret < 0)
|
|
break;
|
|
|
|
break;
|
|
case BIO_CTRL_DGRAM_SCTP_NEXT_AUTH_KEY:
|
|
/* Returns 0 on success, -1 otherwise. */
|
|
|
|
/* Get active key */
|
|
sockopt_len = sizeof(struct sctp_authkeyid);
|
|
ret =
|
|
getsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY, &authkeyid,
|
|
&sockopt_len);
|
|
if (ret < 0)
|
|
break;
|
|
|
|
/* Set active key */
|
|
authkeyid.scact_keynumber = authkeyid.scact_keynumber + 1;
|
|
ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY,
|
|
&authkeyid, sizeof(struct sctp_authkeyid));
|
|
if (ret < 0)
|
|
break;
|
|
|
|
/*
|
|
* CCS has been sent, so remember that and fall through to check if
|
|
* we need to deactivate an old key
|
|
*/
|
|
data->ccs_sent = 1;
|
|
|
|
case BIO_CTRL_DGRAM_SCTP_AUTH_CCS_RCVD:
|
|
/* Returns 0 on success, -1 otherwise. */
|
|
|
|
/*
|
|
* Has this command really been called or is this just a
|
|
* fall-through?
|
|
*/
|
|
if (cmd == BIO_CTRL_DGRAM_SCTP_AUTH_CCS_RCVD)
|
|
data->ccs_rcvd = 1;
|
|
|
|
/*
|
|
* CSS has been both, received and sent, so deactivate an old key
|
|
*/
|
|
if (data->ccs_rcvd == 1 && data->ccs_sent == 1) {
|
|
/* Get active key */
|
|
sockopt_len = sizeof(struct sctp_authkeyid);
|
|
ret =
|
|
getsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY,
|
|
&authkeyid, &sockopt_len);
|
|
if (ret < 0)
|
|
break;
|
|
|
|
/*
|
|
* Deactivate key or delete second last key if
|
|
* SCTP_AUTHENTICATION_EVENT is not available.
|
|
*/
|
|
authkeyid.scact_keynumber = authkeyid.scact_keynumber - 1;
|
|
# ifdef SCTP_AUTH_DEACTIVATE_KEY
|
|
sockopt_len = sizeof(struct sctp_authkeyid);
|
|
ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_DEACTIVATE_KEY,
|
|
&authkeyid, sockopt_len);
|
|
if (ret < 0)
|
|
break;
|
|
# endif
|
|
# ifndef SCTP_AUTHENTICATION_EVENT
|
|
if (authkeyid.scact_keynumber > 0) {
|
|
authkeyid.scact_keynumber = authkeyid.scact_keynumber - 1;
|
|
ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_DELETE_KEY,
|
|
&authkeyid, sizeof(struct sctp_authkeyid));
|
|
if (ret < 0)
|
|
break;
|
|
}
|
|
# endif
|
|
|
|
data->ccs_rcvd = 0;
|
|
data->ccs_sent = 0;
|
|
}
|
|
break;
|
|
case BIO_CTRL_DGRAM_SCTP_GET_SNDINFO:
|
|
/* Returns the size of the copied struct. */
|
|
if (num > (long)sizeof(struct bio_dgram_sctp_sndinfo))
|
|
num = sizeof(struct bio_dgram_sctp_sndinfo);
|
|
|
|
memcpy(ptr, &(data->sndinfo), num);
|
|
ret = num;
|
|
break;
|
|
case BIO_CTRL_DGRAM_SCTP_SET_SNDINFO:
|
|
/* Returns the size of the copied struct. */
|
|
if (num > (long)sizeof(struct bio_dgram_sctp_sndinfo))
|
|
num = sizeof(struct bio_dgram_sctp_sndinfo);
|
|
|
|
memcpy(&(data->sndinfo), ptr, num);
|
|
break;
|
|
case BIO_CTRL_DGRAM_SCTP_GET_RCVINFO:
|
|
/* Returns the size of the copied struct. */
|
|
if (num > (long)sizeof(struct bio_dgram_sctp_rcvinfo))
|
|
num = sizeof(struct bio_dgram_sctp_rcvinfo);
|
|
|
|
memcpy(ptr, &data->rcvinfo, num);
|
|
|
|
ret = num;
|
|
break;
|
|
case BIO_CTRL_DGRAM_SCTP_SET_RCVINFO:
|
|
/* Returns the size of the copied struct. */
|
|
if (num > (long)sizeof(struct bio_dgram_sctp_rcvinfo))
|
|
num = sizeof(struct bio_dgram_sctp_rcvinfo);
|
|
|
|
memcpy(&(data->rcvinfo), ptr, num);
|
|
break;
|
|
case BIO_CTRL_DGRAM_SCTP_GET_PRINFO:
|
|
/* Returns the size of the copied struct. */
|
|
if (num > (long)sizeof(struct bio_dgram_sctp_prinfo))
|
|
num = sizeof(struct bio_dgram_sctp_prinfo);
|
|
|
|
memcpy(ptr, &(data->prinfo), num);
|
|
ret = num;
|
|
break;
|
|
case BIO_CTRL_DGRAM_SCTP_SET_PRINFO:
|
|
/* Returns the size of the copied struct. */
|
|
if (num > (long)sizeof(struct bio_dgram_sctp_prinfo))
|
|
num = sizeof(struct bio_dgram_sctp_prinfo);
|
|
|
|
memcpy(&(data->prinfo), ptr, num);
|
|
break;
|
|
case BIO_CTRL_DGRAM_SCTP_SAVE_SHUTDOWN:
|
|
/* Returns always 1. */
|
|
if (num > 0)
|
|
data->save_shutdown = 1;
|
|
else
|
|
data->save_shutdown = 0;
|
|
break;
|
|
|
|
default:
|
|
/*
|
|
* Pass to default ctrl function to process SCTP unspecific commands
|
|
*/
|
|
ret = dgram_ctrl(b, cmd, num, ptr);
|
|
break;
|
|
}
|
|
return (ret);
|
|
}
|
|
|
|
int BIO_dgram_sctp_notification_cb(BIO *b,
|
|
void (*handle_notifications) (BIO *bio,
|
|
void
|
|
*context,
|
|
void *buf),
|
|
void *context)
|
|
{
|
|
bio_dgram_sctp_data *data = (bio_dgram_sctp_data *) b->ptr;
|
|
|
|
if (handle_notifications != NULL) {
|
|
data->handle_notifications = handle_notifications;
|
|
data->notification_context = context;
|
|
} else
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int BIO_dgram_sctp_wait_for_dry(BIO *b)
|
|
{
|
|
int is_dry = 0;
|
|
int n, sockflags, ret;
|
|
union sctp_notification snp;
|
|
struct msghdr msg;
|
|
struct iovec iov;
|
|
# ifdef SCTP_EVENT
|
|
struct sctp_event event;
|
|
# else
|
|
struct sctp_event_subscribe event;
|
|
socklen_t eventsize;
|
|
# endif
|
|
bio_dgram_sctp_data *data = (bio_dgram_sctp_data *) b->ptr;
|
|
|
|
/* set sender dry event */
|
|
# ifdef SCTP_EVENT
|
|
memset(&event, 0, sizeof(struct sctp_event));
|
|
event.se_assoc_id = 0;
|
|
event.se_type = SCTP_SENDER_DRY_EVENT;
|
|
event.se_on = 1;
|
|
ret =
|
|
setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENT, &event,
|
|
sizeof(struct sctp_event));
|
|
# else
|
|
eventsize = sizeof(struct sctp_event_subscribe);
|
|
ret = getsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, &eventsize);
|
|
if (ret < 0)
|
|
return -1;
|
|
|
|
event.sctp_sender_dry_event = 1;
|
|
|
|
ret =
|
|
setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event,
|
|
sizeof(struct sctp_event_subscribe));
|
|
# endif
|
|
if (ret < 0)
|
|
return -1;
|
|
|
|
/* peek for notification */
|
|
memset(&snp, 0x00, sizeof(union sctp_notification));
|
|
iov.iov_base = (char *)&snp;
|
|
iov.iov_len = sizeof(union sctp_notification);
|
|
msg.msg_name = NULL;
|
|
msg.msg_namelen = 0;
|
|
msg.msg_iov = &iov;
|
|
msg.msg_iovlen = 1;
|
|
msg.msg_control = NULL;
|
|
msg.msg_controllen = 0;
|
|
msg.msg_flags = 0;
|
|
|
|
n = recvmsg(b->num, &msg, MSG_PEEK);
|
|
if (n <= 0) {
|
|
if ((n < 0) && (get_last_socket_error() != EAGAIN)
|
|
&& (get_last_socket_error() != EWOULDBLOCK))
|
|
return -1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/* if we find a notification, process it and try again if necessary */
|
|
while (msg.msg_flags & MSG_NOTIFICATION) {
|
|
memset(&snp, 0x00, sizeof(union sctp_notification));
|
|
iov.iov_base = (char *)&snp;
|
|
iov.iov_len = sizeof(union sctp_notification);
|
|
msg.msg_name = NULL;
|
|
msg.msg_namelen = 0;
|
|
msg.msg_iov = &iov;
|
|
msg.msg_iovlen = 1;
|
|
msg.msg_control = NULL;
|
|
msg.msg_controllen = 0;
|
|
msg.msg_flags = 0;
|
|
|
|
n = recvmsg(b->num, &msg, 0);
|
|
if (n <= 0) {
|
|
if ((n < 0) && (get_last_socket_error() != EAGAIN)
|
|
&& (get_last_socket_error() != EWOULDBLOCK))
|
|
return -1;
|
|
else
|
|
return is_dry;
|
|
}
|
|
|
|
if (snp.sn_header.sn_type == SCTP_SENDER_DRY_EVENT) {
|
|
is_dry = 1;
|
|
|
|
/* disable sender dry event */
|
|
# ifdef SCTP_EVENT
|
|
memset(&event, 0, sizeof(struct sctp_event));
|
|
event.se_assoc_id = 0;
|
|
event.se_type = SCTP_SENDER_DRY_EVENT;
|
|
event.se_on = 0;
|
|
ret =
|
|
setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENT, &event,
|
|
sizeof(struct sctp_event));
|
|
# else
|
|
eventsize = (socklen_t) sizeof(struct sctp_event_subscribe);
|
|
ret =
|
|
getsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event,
|
|
&eventsize);
|
|
if (ret < 0)
|
|
return -1;
|
|
|
|
event.sctp_sender_dry_event = 0;
|
|
|
|
ret =
|
|
setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event,
|
|
sizeof(struct sctp_event_subscribe));
|
|
# endif
|
|
if (ret < 0)
|
|
return -1;
|
|
}
|
|
# ifdef SCTP_AUTHENTICATION_EVENT
|
|
if (snp.sn_header.sn_type == SCTP_AUTHENTICATION_EVENT)
|
|
dgram_sctp_handle_auth_free_key_event(b, &snp);
|
|
# endif
|
|
|
|
if (data->handle_notifications != NULL)
|
|
data->handle_notifications(b, data->notification_context,
|
|
(void *)&snp);
|
|
|
|
/* found notification, peek again */
|
|
memset(&snp, 0x00, sizeof(union sctp_notification));
|
|
iov.iov_base = (char *)&snp;
|
|
iov.iov_len = sizeof(union sctp_notification);
|
|
msg.msg_name = NULL;
|
|
msg.msg_namelen = 0;
|
|
msg.msg_iov = &iov;
|
|
msg.msg_iovlen = 1;
|
|
msg.msg_control = NULL;
|
|
msg.msg_controllen = 0;
|
|
msg.msg_flags = 0;
|
|
|
|
/* if we have seen the dry already, don't wait */
|
|
if (is_dry) {
|
|
sockflags = fcntl(b->num, F_GETFL, 0);
|
|
fcntl(b->num, F_SETFL, O_NONBLOCK);
|
|
}
|
|
|
|
n = recvmsg(b->num, &msg, MSG_PEEK);
|
|
|
|
if (is_dry) {
|
|
fcntl(b->num, F_SETFL, sockflags);
|
|
}
|
|
|
|
if (n <= 0) {
|
|
if ((n < 0) && (get_last_socket_error() != EAGAIN)
|
|
&& (get_last_socket_error() != EWOULDBLOCK))
|
|
return -1;
|
|
else
|
|
return is_dry;
|
|
}
|
|
}
|
|
|
|
/* read anything else */
|
|
return is_dry;
|
|
}
|
|
|
|
int BIO_dgram_sctp_msg_waiting(BIO *b)
|
|
{
|
|
int n, sockflags;
|
|
union sctp_notification snp;
|
|
struct msghdr msg;
|
|
struct iovec iov;
|
|
bio_dgram_sctp_data *data = (bio_dgram_sctp_data *) b->ptr;
|
|
|
|
/* Check if there are any messages waiting to be read */
|
|
do {
|
|
memset(&snp, 0x00, sizeof(union sctp_notification));
|
|
iov.iov_base = (char *)&snp;
|
|
iov.iov_len = sizeof(union sctp_notification);
|
|
msg.msg_name = NULL;
|
|
msg.msg_namelen = 0;
|
|
msg.msg_iov = &iov;
|
|
msg.msg_iovlen = 1;
|
|
msg.msg_control = NULL;
|
|
msg.msg_controllen = 0;
|
|
msg.msg_flags = 0;
|
|
|
|
sockflags = fcntl(b->num, F_GETFL, 0);
|
|
fcntl(b->num, F_SETFL, O_NONBLOCK);
|
|
n = recvmsg(b->num, &msg, MSG_PEEK);
|
|
fcntl(b->num, F_SETFL, sockflags);
|
|
|
|
/* if notification, process and try again */
|
|
if (n > 0 && (msg.msg_flags & MSG_NOTIFICATION)) {
|
|
# ifdef SCTP_AUTHENTICATION_EVENT
|
|
if (snp.sn_header.sn_type == SCTP_AUTHENTICATION_EVENT)
|
|
dgram_sctp_handle_auth_free_key_event(b, &snp);
|
|
# endif
|
|
|
|
memset(&snp, 0x00, sizeof(union sctp_notification));
|
|
iov.iov_base = (char *)&snp;
|
|
iov.iov_len = sizeof(union sctp_notification);
|
|
msg.msg_name = NULL;
|
|
msg.msg_namelen = 0;
|
|
msg.msg_iov = &iov;
|
|
msg.msg_iovlen = 1;
|
|
msg.msg_control = NULL;
|
|
msg.msg_controllen = 0;
|
|
msg.msg_flags = 0;
|
|
n = recvmsg(b->num, &msg, 0);
|
|
|
|
if (data->handle_notifications != NULL)
|
|
data->handle_notifications(b, data->notification_context,
|
|
(void *)&snp);
|
|
}
|
|
|
|
} while (n > 0 && (msg.msg_flags & MSG_NOTIFICATION));
|
|
|
|
/* Return 1 if there is a message to be read, return 0 otherwise. */
|
|
if (n > 0)
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static int dgram_sctp_puts(BIO *bp, const char *str)
|
|
{
|
|
int n, ret;
|
|
|
|
n = strlen(str);
|
|
ret = dgram_sctp_write(bp, str, n);
|
|
return (ret);
|
|
}
|
|
# endif
|
|
|
|
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)
|
|
/*
|
|
* If the socket return value (i) is -1 and err is unexpectedly 0 at
|
|
* this point, the error code was overwritten by another system call
|
|
* before this error handling is called.
|
|
*/
|
|
# 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);
|
|
}
|
|
|
|
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
|
|
}
|
|
|
|
#endif
|