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2011 lines
59 KiB
2011 lines
59 KiB
/* 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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|
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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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|
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#include <openssl/bio.h> |
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#ifndef OPENSSL_NO_DGRAM |
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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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 |
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|
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data = (bio_dgram_data *)b->ptr; |
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|
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switch (cmd) { |
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case BIO_CTRL_RESET: |
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num = 0; |
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ret = 0; |
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break; |
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case BIO_CTRL_INFO: |
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ret = 0; |
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break; |
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case BIO_C_SET_FD: |
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dgram_clear(b); |
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b->num = *((int *)ptr); |
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b->shutdown = (int)num; |
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b->init = 1; |
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break; |
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case BIO_C_GET_FD: |
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if (b->init) { |
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ip = (int *)ptr; |
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if (ip != NULL) |
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*ip = b->num; |
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ret = b->num; |
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} else |
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ret = -1; |
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break; |
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case BIO_CTRL_GET_CLOSE: |
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ret = b->shutdown; |
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break; |
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case BIO_CTRL_SET_CLOSE: |
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b->shutdown = (int)num; |
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break; |
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case BIO_CTRL_PENDING: |
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case BIO_CTRL_WPENDING: |
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ret = 0; |
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break; |
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case BIO_CTRL_DUP: |
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case BIO_CTRL_FLUSH: |
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ret = 1; |
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break; |
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case BIO_CTRL_DGRAM_CONNECT: |
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to = (struct sockaddr *)ptr; |
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# if 0 |
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if (connect(b->num, to, sizeof(struct sockaddr)) < 0) { |
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perror("connect"); |
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ret = 0; |
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} else { |
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# endif |
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switch (to->sa_family) { |
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case AF_INET: |
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memcpy(&data->peer, to, sizeof(data->peer.sa_in)); |
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break; |
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# if OPENSSL_USE_IPV6 |
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case AF_INET6: |
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memcpy(&data->peer, to, sizeof(data->peer.sa_in6)); |
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break; |
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# endif |
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default: |
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memcpy(&data->peer, to, sizeof(data->peer.sa)); |
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break; |
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} |
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# if 0 |
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} |
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# endif |
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break; |
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/* (Linux)kernel sets DF bit on outgoing IP packets */ |
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case BIO_CTRL_DGRAM_MTU_DISCOVER: |
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# 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
|
|
|