[331] | 1 | /*
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| 2 | * Copyright 2005-2016 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include <stdio.h>
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| 11 | #include <errno.h>
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| 12 |
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| 13 | #include "bio_lcl.h"
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| 14 | #ifndef OPENSSL_NO_DGRAM
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| 15 |
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| 16 | # if !(defined(_WIN32) || defined(OPENSSL_SYS_VMS))
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| 17 | # include <sys/time.h>
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| 18 | # endif
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| 19 | # if defined(OPENSSL_SYS_VMS)
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| 20 | # include <sys/timeb.h>
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| 21 | # endif
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| 22 |
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| 23 | # ifndef OPENSSL_NO_SCTP
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| 24 | # include <netinet/sctp.h>
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| 25 | # include <fcntl.h>
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| 26 | # define OPENSSL_SCTP_DATA_CHUNK_TYPE 0x00
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| 27 | # define OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE 0xc0
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| 28 | # endif
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| 29 |
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| 30 | # if defined(OPENSSL_SYS_LINUX) && !defined(IP_MTU)
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| 31 | # define IP_MTU 14 /* linux is lame */
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| 32 | # endif
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| 33 |
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| 34 | # if OPENSSL_USE_IPV6 && !defined(IPPROTO_IPV6)
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| 35 | # define IPPROTO_IPV6 41 /* windows is lame */
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| 36 | # endif
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| 37 |
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| 38 | # if defined(__FreeBSD__) && defined(IN6_IS_ADDR_V4MAPPED)
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| 39 | /* Standard definition causes type-punning problems. */
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| 40 | # undef IN6_IS_ADDR_V4MAPPED
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| 41 | # define s6_addr32 __u6_addr.__u6_addr32
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| 42 | # define IN6_IS_ADDR_V4MAPPED(a) \
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| 43 | (((a)->s6_addr32[0] == 0) && \
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| 44 | ((a)->s6_addr32[1] == 0) && \
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| 45 | ((a)->s6_addr32[2] == htonl(0x0000ffff)))
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| 46 | # endif
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| 47 |
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| 48 | static int dgram_write(BIO *h, const char *buf, int num);
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| 49 | static int dgram_read(BIO *h, char *buf, int size);
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| 50 | static int dgram_puts(BIO *h, const char *str);
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| 51 | static long dgram_ctrl(BIO *h, int cmd, long arg1, void *arg2);
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| 52 | static int dgram_new(BIO *h);
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| 53 | static int dgram_free(BIO *data);
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| 54 | static int dgram_clear(BIO *bio);
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| 55 |
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| 56 | # ifndef OPENSSL_NO_SCTP
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| 57 | static int dgram_sctp_write(BIO *h, const char *buf, int num);
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| 58 | static int dgram_sctp_read(BIO *h, char *buf, int size);
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| 59 | static int dgram_sctp_puts(BIO *h, const char *str);
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| 60 | static long dgram_sctp_ctrl(BIO *h, int cmd, long arg1, void *arg2);
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| 61 | static int dgram_sctp_new(BIO *h);
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| 62 | static int dgram_sctp_free(BIO *data);
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| 63 | # ifdef SCTP_AUTHENTICATION_EVENT
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| 64 | static void dgram_sctp_handle_auth_free_key_event(BIO *b, union sctp_notification
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| 65 | *snp);
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| 66 | # endif
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| 67 | # endif
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| 68 |
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| 69 | static int BIO_dgram_should_retry(int s);
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| 70 |
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| 71 | static void get_current_time(struct timeval *t);
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| 72 |
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| 73 | static const BIO_METHOD methods_dgramp = {
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| 74 | BIO_TYPE_DGRAM,
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| 75 | "datagram socket",
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| 76 | dgram_write,
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| 77 | dgram_read,
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| 78 | dgram_puts,
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| 79 | NULL, /* dgram_gets, */
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| 80 | dgram_ctrl,
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| 81 | dgram_new,
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| 82 | dgram_free,
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| 83 | NULL,
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| 84 | };
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| 85 |
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| 86 | # ifndef OPENSSL_NO_SCTP
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| 87 | static const BIO_METHOD methods_dgramp_sctp = {
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| 88 | BIO_TYPE_DGRAM_SCTP,
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| 89 | "datagram sctp socket",
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| 90 | dgram_sctp_write,
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| 91 | dgram_sctp_read,
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| 92 | dgram_sctp_puts,
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| 93 | NULL, /* dgram_gets, */
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| 94 | dgram_sctp_ctrl,
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| 95 | dgram_sctp_new,
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| 96 | dgram_sctp_free,
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| 97 | NULL,
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| 98 | };
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| 99 | # endif
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| 100 |
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| 101 | typedef struct bio_dgram_data_st {
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| 102 | BIO_ADDR peer;
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| 103 | unsigned int connected;
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| 104 | unsigned int _errno;
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| 105 | unsigned int mtu;
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| 106 | struct timeval next_timeout;
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| 107 | struct timeval socket_timeout;
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| 108 | unsigned int peekmode;
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| 109 | } bio_dgram_data;
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| 110 |
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| 111 | # ifndef OPENSSL_NO_SCTP
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| 112 | typedef struct bio_dgram_sctp_save_message_st {
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| 113 | BIO *bio;
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| 114 | char *data;
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| 115 | int length;
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| 116 | } bio_dgram_sctp_save_message;
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| 117 |
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| 118 | typedef struct bio_dgram_sctp_data_st {
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| 119 | BIO_ADDR peer;
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| 120 | unsigned int connected;
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| 121 | unsigned int _errno;
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| 122 | unsigned int mtu;
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| 123 | struct bio_dgram_sctp_sndinfo sndinfo;
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| 124 | struct bio_dgram_sctp_rcvinfo rcvinfo;
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| 125 | struct bio_dgram_sctp_prinfo prinfo;
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| 126 | void (*handle_notifications) (BIO *bio, void *context, void *buf);
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| 127 | void *notification_context;
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| 128 | int in_handshake;
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| 129 | int ccs_rcvd;
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| 130 | int ccs_sent;
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| 131 | int save_shutdown;
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| 132 | int peer_auth_tested;
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| 133 | bio_dgram_sctp_save_message saved_message;
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| 134 | } bio_dgram_sctp_data;
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| 135 | # endif
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| 136 |
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| 137 | const BIO_METHOD *BIO_s_datagram(void)
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| 138 | {
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| 139 | return (&methods_dgramp);
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| 140 | }
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| 141 |
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| 142 | BIO *BIO_new_dgram(int fd, int close_flag)
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| 143 | {
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| 144 | BIO *ret;
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| 145 |
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| 146 | ret = BIO_new(BIO_s_datagram());
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| 147 | if (ret == NULL)
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| 148 | return (NULL);
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| 149 | BIO_set_fd(ret, fd, close_flag);
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| 150 | return (ret);
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| 151 | }
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| 152 |
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| 153 | static int dgram_new(BIO *bi)
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| 154 | {
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| 155 | bio_dgram_data *data = OPENSSL_zalloc(sizeof(*data));
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| 156 |
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| 157 | if (data == NULL)
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| 158 | return 0;
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| 159 | bi->ptr = data;
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| 160 | return (1);
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| 161 | }
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| 162 |
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| 163 | static int dgram_free(BIO *a)
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| 164 | {
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| 165 | bio_dgram_data *data;
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| 166 |
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| 167 | if (a == NULL)
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| 168 | return (0);
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| 169 | if (!dgram_clear(a))
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| 170 | return 0;
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| 171 |
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| 172 | data = (bio_dgram_data *)a->ptr;
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| 173 | OPENSSL_free(data);
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| 174 |
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| 175 | return (1);
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| 176 | }
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| 177 |
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| 178 | static int dgram_clear(BIO *a)
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| 179 | {
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| 180 | if (a == NULL)
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| 181 | return (0);
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| 182 | if (a->shutdown) {
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| 183 | if (a->init) {
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| 184 | BIO_closesocket(a->num);
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| 185 | }
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| 186 | a->init = 0;
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| 187 | a->flags = 0;
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| 188 | }
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| 189 | return (1);
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| 190 | }
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| 191 |
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| 192 | static void dgram_adjust_rcv_timeout(BIO *b)
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| 193 | {
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| 194 | # if defined(SO_RCVTIMEO)
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| 195 | bio_dgram_data *data = (bio_dgram_data *)b->ptr;
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| 196 | union {
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| 197 | size_t s;
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| 198 | int i;
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| 199 | } sz = {
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| 200 | 0
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| 201 | };
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| 202 |
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| 203 | /* Is a timer active? */
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| 204 | if (data->next_timeout.tv_sec > 0 || data->next_timeout.tv_usec > 0) {
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| 205 | struct timeval timenow, timeleft;
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| 206 |
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| 207 | /* Read current socket timeout */
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| 208 | # ifdef OPENSSL_SYS_WINDOWS
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| 209 | int timeout;
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| 210 |
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| 211 | sz.i = sizeof(timeout);
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| 212 | if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
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| 213 | (void *)&timeout, &sz.i) < 0) {
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| 214 | perror("getsockopt");
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| 215 | } else {
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| 216 | data->socket_timeout.tv_sec = timeout / 1000;
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| 217 | data->socket_timeout.tv_usec = (timeout % 1000) * 1000;
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| 218 | }
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| 219 | # else
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| 220 | sz.i = sizeof(data->socket_timeout);
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| 221 | if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
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| 222 | &(data->socket_timeout), (void *)&sz) < 0) {
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| 223 | perror("getsockopt");
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| 224 | } else if (sizeof(sz.s) != sizeof(sz.i) && sz.i == 0)
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| 225 | OPENSSL_assert(sz.s <= sizeof(data->socket_timeout));
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| 226 | # endif
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| 227 |
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| 228 | /* Get current time */
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| 229 | get_current_time(&timenow);
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| 230 |
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| 231 | /* Calculate time left until timer expires */
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| 232 | memcpy(&timeleft, &(data->next_timeout), sizeof(struct timeval));
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| 233 | if (timeleft.tv_usec < timenow.tv_usec) {
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| 234 | timeleft.tv_usec = 1000000 - timenow.tv_usec + timeleft.tv_usec;
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| 235 | timeleft.tv_sec--;
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| 236 | } else {
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| 237 | timeleft.tv_usec -= timenow.tv_usec;
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| 238 | }
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| 239 | if (timeleft.tv_sec < timenow.tv_sec) {
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| 240 | timeleft.tv_sec = 0;
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| 241 | timeleft.tv_usec = 1;
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| 242 | } else {
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| 243 | timeleft.tv_sec -= timenow.tv_sec;
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| 244 | }
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| 245 |
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| 246 | /*
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| 247 | * Adjust socket timeout if next handshake message timer will expire
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| 248 | * earlier.
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| 249 | */
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| 250 | if ((data->socket_timeout.tv_sec == 0
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| 251 | && data->socket_timeout.tv_usec == 0)
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| 252 | || (data->socket_timeout.tv_sec > timeleft.tv_sec)
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| 253 | || (data->socket_timeout.tv_sec == timeleft.tv_sec
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| 254 | && data->socket_timeout.tv_usec >= timeleft.tv_usec)) {
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| 255 | # ifdef OPENSSL_SYS_WINDOWS
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| 256 | timeout = timeleft.tv_sec * 1000 + timeleft.tv_usec / 1000;
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| 257 | if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
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| 258 | (void *)&timeout, sizeof(timeout)) < 0) {
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| 259 | perror("setsockopt");
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| 260 | }
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| 261 | # else
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| 262 | if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, &timeleft,
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| 263 | sizeof(struct timeval)) < 0) {
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| 264 | perror("setsockopt");
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| 265 | }
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| 266 | # endif
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| 267 | }
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| 268 | }
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| 269 | # endif
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| 270 | }
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| 271 |
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| 272 | static void dgram_reset_rcv_timeout(BIO *b)
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| 273 | {
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| 274 | # if defined(SO_RCVTIMEO)
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| 275 | bio_dgram_data *data = (bio_dgram_data *)b->ptr;
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| 276 |
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| 277 | /* Is a timer active? */
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| 278 | if (data->next_timeout.tv_sec > 0 || data->next_timeout.tv_usec > 0) {
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| 279 | # ifdef OPENSSL_SYS_WINDOWS
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| 280 | int timeout = data->socket_timeout.tv_sec * 1000 +
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| 281 | data->socket_timeout.tv_usec / 1000;
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| 282 | if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
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| 283 | (void *)&timeout, sizeof(timeout)) < 0) {
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| 284 | perror("setsockopt");
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| 285 | }
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| 286 | # else
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| 287 | if (setsockopt
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| 288 | (b->num, SOL_SOCKET, SO_RCVTIMEO, &(data->socket_timeout),
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| 289 | sizeof(struct timeval)) < 0) {
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| 290 | perror("setsockopt");
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| 291 | }
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| 292 | # endif
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| 293 | }
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| 294 | # endif
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| 295 | }
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| 296 |
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| 297 | static int dgram_read(BIO *b, char *out, int outl)
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| 298 | {
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| 299 | int ret = 0;
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| 300 | bio_dgram_data *data = (bio_dgram_data *)b->ptr;
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| 301 | int flags = 0;
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| 302 |
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| 303 | BIO_ADDR peer;
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| 304 | socklen_t len = sizeof(peer);
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| 305 |
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| 306 | if (out != NULL) {
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| 307 | clear_socket_error();
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| 308 | memset(&peer, 0, sizeof(peer));
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| 309 | dgram_adjust_rcv_timeout(b);
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| 310 | if (data->peekmode)
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| 311 | flags = MSG_PEEK;
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| 312 | ret = recvfrom(b->num, out, outl, flags,
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| 313 | BIO_ADDR_sockaddr_noconst(&peer), &len);
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| 314 |
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| 315 | if (!data->connected && ret >= 0)
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| 316 | BIO_ctrl(b, BIO_CTRL_DGRAM_SET_PEER, 0, &peer);
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| 317 |
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| 318 | BIO_clear_retry_flags(b);
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| 319 | if (ret < 0) {
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| 320 | if (BIO_dgram_should_retry(ret)) {
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| 321 | BIO_set_retry_read(b);
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| 322 | data->_errno = get_last_socket_error();
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| 323 | }
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| 324 | }
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| 325 |
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| 326 | dgram_reset_rcv_timeout(b);
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| 327 | }
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| 328 | return (ret);
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| 329 | }
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| 330 |
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| 331 | static int dgram_write(BIO *b, const char *in, int inl)
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| 332 | {
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| 333 | int ret;
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| 334 | bio_dgram_data *data = (bio_dgram_data *)b->ptr;
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| 335 | clear_socket_error();
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| 336 |
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| 337 | if (data->connected)
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| 338 | ret = writesocket(b->num, in, inl);
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| 339 | else {
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| 340 | int peerlen = BIO_ADDR_sockaddr_size(&data->peer);
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| 341 |
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| 342 | # if defined(NETWARE_CLIB) && defined(NETWARE_BSDSOCK)
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| 343 | ret = sendto(b->num, (char *)in, inl, 0,
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| 344 | BIO_ADDR_sockaddr(&data->peer), peerlen);
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| 345 | # else
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| 346 | ret = sendto(b->num, in, inl, 0,
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| 347 | BIO_ADDR_sockaddr(&data->peer), peerlen);
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| 348 | # endif
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| 349 | }
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| 350 |
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| 351 | BIO_clear_retry_flags(b);
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| 352 | if (ret <= 0) {
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| 353 | if (BIO_dgram_should_retry(ret)) {
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| 354 | BIO_set_retry_write(b);
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| 355 | data->_errno = get_last_socket_error();
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| 356 | }
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| 357 | }
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| 358 | return (ret);
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| 359 | }
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| 360 |
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| 361 | static long dgram_get_mtu_overhead(bio_dgram_data *data)
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| 362 | {
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| 363 | long ret;
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| 364 |
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| 365 | switch (BIO_ADDR_family(&data->peer)) {
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| 366 | case AF_INET:
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| 367 | /*
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| 368 | * Assume this is UDP - 20 bytes for IP, 8 bytes for UDP
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| 369 | */
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| 370 | ret = 28;
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| 371 | break;
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| 372 | # ifdef AF_INET6
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| 373 | case AF_INET6:
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| 374 | {
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| 375 | # ifdef IN6_IS_ADDR_V4MAPPED
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| 376 | struct in6_addr tmp_addr;
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| 377 | if (BIO_ADDR_rawaddress(&data->peer, &tmp_addr, NULL)
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| 378 | && IN6_IS_ADDR_V4MAPPED(&tmp_addr))
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| 379 | /*
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| 380 | * Assume this is UDP - 20 bytes for IP, 8 bytes for UDP
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| 381 | */
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| 382 | ret = 28;
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| 383 | else
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| 384 | # endif
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| 385 | /*
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| 386 | * Assume this is UDP - 40 bytes for IP, 8 bytes for UDP
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| 387 | */
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| 388 | ret = 48;
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| 389 | }
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| 390 | break;
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| 391 | # endif
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| 392 | default:
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| 393 | /* We don't know. Go with the historical default */
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| 394 | ret = 28;
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| 395 | break;
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| 396 | }
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| 397 | return ret;
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| 398 | }
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| 399 |
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| 400 | static long dgram_ctrl(BIO *b, int cmd, long num, void *ptr)
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| 401 | {
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| 402 | long ret = 1;
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| 403 | int *ip;
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| 404 | bio_dgram_data *data = NULL;
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| 405 | int sockopt_val = 0;
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| 406 | int d_errno;
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| 407 | # if defined(OPENSSL_SYS_LINUX) && (defined(IP_MTU_DISCOVER) || defined(IP_MTU))
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| 408 | socklen_t sockopt_len; /* assume that system supporting IP_MTU is
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| 409 | * modern enough to define socklen_t */
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| 410 | socklen_t addr_len;
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| 411 | BIO_ADDR addr;
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| 412 | # endif
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| 413 |
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| 414 | data = (bio_dgram_data *)b->ptr;
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| 415 |
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| 416 | switch (cmd) {
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| 417 | case BIO_CTRL_RESET:
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| 418 | num = 0;
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| 419 | ret = 0;
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| 420 | break;
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| 421 | case BIO_CTRL_INFO:
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| 422 | ret = 0;
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| 423 | break;
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| 424 | case BIO_C_SET_FD:
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| 425 | dgram_clear(b);
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| 426 | b->num = *((int *)ptr);
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| 427 | b->shutdown = (int)num;
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| 428 | b->init = 1;
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| 429 | break;
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| 430 | case BIO_C_GET_FD:
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| 431 | if (b->init) {
|
---|
| 432 | ip = (int *)ptr;
|
---|
| 433 | if (ip != NULL)
|
---|
| 434 | *ip = b->num;
|
---|
| 435 | ret = b->num;
|
---|
| 436 | } else
|
---|
| 437 | ret = -1;
|
---|
| 438 | break;
|
---|
| 439 | case BIO_CTRL_GET_CLOSE:
|
---|
| 440 | ret = b->shutdown;
|
---|
| 441 | break;
|
---|
| 442 | case BIO_CTRL_SET_CLOSE:
|
---|
| 443 | b->shutdown = (int)num;
|
---|
| 444 | break;
|
---|
| 445 | case BIO_CTRL_PENDING:
|
---|
| 446 | case BIO_CTRL_WPENDING:
|
---|
| 447 | ret = 0;
|
---|
| 448 | break;
|
---|
| 449 | case BIO_CTRL_DUP:
|
---|
| 450 | case BIO_CTRL_FLUSH:
|
---|
| 451 | ret = 1;
|
---|
| 452 | break;
|
---|
| 453 | case BIO_CTRL_DGRAM_CONNECT:
|
---|
| 454 | BIO_ADDR_make(&data->peer, BIO_ADDR_sockaddr((BIO_ADDR *)ptr));
|
---|
| 455 | break;
|
---|
| 456 | /* (Linux)kernel sets DF bit on outgoing IP packets */
|
---|
| 457 | case BIO_CTRL_DGRAM_MTU_DISCOVER:
|
---|
| 458 | # if defined(OPENSSL_SYS_LINUX) && defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DO)
|
---|
| 459 | addr_len = (socklen_t) sizeof(addr);
|
---|
| 460 | memset(&addr, 0, sizeof(addr));
|
---|
| 461 | if (getsockname(b->num, &addr.sa, &addr_len) < 0) {
|
---|
| 462 | ret = 0;
|
---|
| 463 | break;
|
---|
| 464 | }
|
---|
| 465 | switch (addr.sa.sa_family) {
|
---|
| 466 | case AF_INET:
|
---|
| 467 | sockopt_val = IP_PMTUDISC_DO;
|
---|
| 468 | if ((ret = setsockopt(b->num, IPPROTO_IP, IP_MTU_DISCOVER,
|
---|
| 469 | &sockopt_val, sizeof(sockopt_val))) < 0)
|
---|
| 470 | perror("setsockopt");
|
---|
| 471 | break;
|
---|
| 472 | # if OPENSSL_USE_IPV6 && defined(IPV6_MTU_DISCOVER) && defined(IPV6_PMTUDISC_DO)
|
---|
| 473 | case AF_INET6:
|
---|
| 474 | sockopt_val = IPV6_PMTUDISC_DO;
|
---|
| 475 | if ((ret = setsockopt(b->num, IPPROTO_IPV6, IPV6_MTU_DISCOVER,
|
---|
| 476 | &sockopt_val, sizeof(sockopt_val))) < 0)
|
---|
| 477 | perror("setsockopt");
|
---|
| 478 | break;
|
---|
| 479 | # endif
|
---|
| 480 | default:
|
---|
| 481 | ret = -1;
|
---|
| 482 | break;
|
---|
| 483 | }
|
---|
| 484 | # else
|
---|
| 485 | ret = -1;
|
---|
| 486 | # endif
|
---|
| 487 | break;
|
---|
| 488 | case BIO_CTRL_DGRAM_QUERY_MTU:
|
---|
| 489 | # if defined(OPENSSL_SYS_LINUX) && defined(IP_MTU)
|
---|
| 490 | addr_len = (socklen_t) sizeof(addr);
|
---|
| 491 | memset(&addr, 0, sizeof(addr));
|
---|
| 492 | if (getsockname(b->num, &addr.sa, &addr_len) < 0) {
|
---|
| 493 | ret = 0;
|
---|
| 494 | break;
|
---|
| 495 | }
|
---|
| 496 | sockopt_len = sizeof(sockopt_val);
|
---|
| 497 | switch (addr.sa.sa_family) {
|
---|
| 498 | case AF_INET:
|
---|
| 499 | if ((ret =
|
---|
| 500 | getsockopt(b->num, IPPROTO_IP, IP_MTU, (void *)&sockopt_val,
|
---|
| 501 | &sockopt_len)) < 0 || sockopt_val < 0) {
|
---|
| 502 | ret = 0;
|
---|
| 503 | } else {
|
---|
| 504 | /*
|
---|
| 505 | * we assume that the transport protocol is UDP and no IP
|
---|
| 506 | * options are used.
|
---|
| 507 | */
|
---|
| 508 | data->mtu = sockopt_val - 8 - 20;
|
---|
| 509 | ret = data->mtu;
|
---|
| 510 | }
|
---|
| 511 | break;
|
---|
| 512 | # if OPENSSL_USE_IPV6 && defined(IPV6_MTU)
|
---|
| 513 | case AF_INET6:
|
---|
| 514 | if ((ret =
|
---|
| 515 | getsockopt(b->num, IPPROTO_IPV6, IPV6_MTU,
|
---|
| 516 | (void *)&sockopt_val, &sockopt_len)) < 0
|
---|
| 517 | || sockopt_val < 0) {
|
---|
| 518 | ret = 0;
|
---|
| 519 | } else {
|
---|
| 520 | /*
|
---|
| 521 | * we assume that the transport protocol is UDP and no IPV6
|
---|
| 522 | * options are used.
|
---|
| 523 | */
|
---|
| 524 | data->mtu = sockopt_val - 8 - 40;
|
---|
| 525 | ret = data->mtu;
|
---|
| 526 | }
|
---|
| 527 | break;
|
---|
| 528 | # endif
|
---|
| 529 | default:
|
---|
| 530 | ret = 0;
|
---|
| 531 | break;
|
---|
| 532 | }
|
---|
| 533 | # else
|
---|
| 534 | ret = 0;
|
---|
| 535 | # endif
|
---|
| 536 | break;
|
---|
| 537 | case BIO_CTRL_DGRAM_GET_FALLBACK_MTU:
|
---|
| 538 | ret = -dgram_get_mtu_overhead(data);
|
---|
| 539 | switch (BIO_ADDR_family(&data->peer)) {
|
---|
| 540 | case AF_INET:
|
---|
| 541 | ret += 576;
|
---|
| 542 | break;
|
---|
| 543 | # if OPENSSL_USE_IPV6
|
---|
| 544 | case AF_INET6:
|
---|
| 545 | {
|
---|
| 546 | # ifdef IN6_IS_ADDR_V4MAPPED
|
---|
| 547 | struct in6_addr tmp_addr;
|
---|
| 548 | if (BIO_ADDR_rawaddress(&data->peer, &tmp_addr, NULL)
|
---|
| 549 | && IN6_IS_ADDR_V4MAPPED(&tmp_addr))
|
---|
| 550 | ret += 576;
|
---|
| 551 | else
|
---|
| 552 | # endif
|
---|
| 553 | ret += 1280;
|
---|
| 554 | }
|
---|
| 555 | break;
|
---|
| 556 | # endif
|
---|
| 557 | default:
|
---|
| 558 | ret += 576;
|
---|
| 559 | break;
|
---|
| 560 | }
|
---|
| 561 | break;
|
---|
| 562 | case BIO_CTRL_DGRAM_GET_MTU:
|
---|
| 563 | return data->mtu;
|
---|
| 564 | case BIO_CTRL_DGRAM_SET_MTU:
|
---|
| 565 | data->mtu = num;
|
---|
| 566 | ret = num;
|
---|
| 567 | break;
|
---|
| 568 | case BIO_CTRL_DGRAM_SET_CONNECTED:
|
---|
| 569 | if (ptr != NULL) {
|
---|
| 570 | data->connected = 1;
|
---|
| 571 | BIO_ADDR_make(&data->peer, BIO_ADDR_sockaddr((BIO_ADDR *)ptr));
|
---|
| 572 | } else {
|
---|
| 573 | data->connected = 0;
|
---|
| 574 | memset(&data->peer, 0, sizeof(data->peer));
|
---|
| 575 | }
|
---|
| 576 | break;
|
---|
| 577 | case BIO_CTRL_DGRAM_GET_PEER:
|
---|
| 578 | ret = BIO_ADDR_sockaddr_size(&data->peer);
|
---|
| 579 | /* FIXME: if num < ret, we will only return part of an address.
|
---|
| 580 | That should bee an error, no? */
|
---|
| 581 | if (num == 0 || num > ret)
|
---|
| 582 | num = ret;
|
---|
| 583 | memcpy(ptr, &data->peer, (ret = num));
|
---|
| 584 | break;
|
---|
| 585 | case BIO_CTRL_DGRAM_SET_PEER:
|
---|
| 586 | BIO_ADDR_make(&data->peer, BIO_ADDR_sockaddr((BIO_ADDR *)ptr));
|
---|
| 587 | break;
|
---|
| 588 | case BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT:
|
---|
| 589 | memcpy(&(data->next_timeout), ptr, sizeof(struct timeval));
|
---|
| 590 | break;
|
---|
| 591 | # if defined(SO_RCVTIMEO)
|
---|
| 592 | case BIO_CTRL_DGRAM_SET_RECV_TIMEOUT:
|
---|
| 593 | # ifdef OPENSSL_SYS_WINDOWS
|
---|
| 594 | {
|
---|
| 595 | struct timeval *tv = (struct timeval *)ptr;
|
---|
| 596 | int timeout = tv->tv_sec * 1000 + tv->tv_usec / 1000;
|
---|
| 597 | if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
|
---|
| 598 | (void *)&timeout, sizeof(timeout)) < 0) {
|
---|
| 599 | perror("setsockopt");
|
---|
| 600 | ret = -1;
|
---|
| 601 | }
|
---|
| 602 | }
|
---|
| 603 | # else
|
---|
| 604 | if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, ptr,
|
---|
| 605 | sizeof(struct timeval)) < 0) {
|
---|
| 606 | perror("setsockopt");
|
---|
| 607 | ret = -1;
|
---|
| 608 | }
|
---|
| 609 | # endif
|
---|
| 610 | break;
|
---|
| 611 | case BIO_CTRL_DGRAM_GET_RECV_TIMEOUT:
|
---|
| 612 | {
|
---|
| 613 | union {
|
---|
| 614 | size_t s;
|
---|
| 615 | int i;
|
---|
| 616 | } sz = {
|
---|
| 617 | 0
|
---|
| 618 | };
|
---|
| 619 | # ifdef OPENSSL_SYS_WINDOWS
|
---|
| 620 | int timeout;
|
---|
| 621 | struct timeval *tv = (struct timeval *)ptr;
|
---|
| 622 |
|
---|
| 623 | sz.i = sizeof(timeout);
|
---|
| 624 | if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
|
---|
| 625 | (void *)&timeout, &sz.i) < 0) {
|
---|
| 626 | perror("getsockopt");
|
---|
| 627 | ret = -1;
|
---|
| 628 | } else {
|
---|
| 629 | tv->tv_sec = timeout / 1000;
|
---|
| 630 | tv->tv_usec = (timeout % 1000) * 1000;
|
---|
| 631 | ret = sizeof(*tv);
|
---|
| 632 | }
|
---|
| 633 | # else
|
---|
| 634 | sz.i = sizeof(struct timeval);
|
---|
| 635 | if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
|
---|
| 636 | ptr, (void *)&sz) < 0) {
|
---|
| 637 | perror("getsockopt");
|
---|
| 638 | ret = -1;
|
---|
| 639 | } else if (sizeof(sz.s) != sizeof(sz.i) && sz.i == 0) {
|
---|
| 640 | OPENSSL_assert(sz.s <= sizeof(struct timeval));
|
---|
| 641 | ret = (int)sz.s;
|
---|
| 642 | } else
|
---|
| 643 | ret = sz.i;
|
---|
| 644 | # endif
|
---|
| 645 | }
|
---|
| 646 | break;
|
---|
| 647 | # endif
|
---|
| 648 | # if defined(SO_SNDTIMEO)
|
---|
| 649 | case BIO_CTRL_DGRAM_SET_SEND_TIMEOUT:
|
---|
| 650 | # ifdef OPENSSL_SYS_WINDOWS
|
---|
| 651 | {
|
---|
| 652 | struct timeval *tv = (struct timeval *)ptr;
|
---|
| 653 | int timeout = tv->tv_sec * 1000 + tv->tv_usec / 1000;
|
---|
| 654 | if (setsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO,
|
---|
| 655 | (void *)&timeout, sizeof(timeout)) < 0) {
|
---|
| 656 | perror("setsockopt");
|
---|
| 657 | ret = -1;
|
---|
| 658 | }
|
---|
| 659 | }
|
---|
| 660 | # else
|
---|
| 661 | if (setsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO, ptr,
|
---|
| 662 | sizeof(struct timeval)) < 0) {
|
---|
| 663 | perror("setsockopt");
|
---|
| 664 | ret = -1;
|
---|
| 665 | }
|
---|
| 666 | # endif
|
---|
| 667 | break;
|
---|
| 668 | case BIO_CTRL_DGRAM_GET_SEND_TIMEOUT:
|
---|
| 669 | {
|
---|
| 670 | union {
|
---|
| 671 | size_t s;
|
---|
| 672 | int i;
|
---|
| 673 | } sz = {
|
---|
| 674 | 0
|
---|
| 675 | };
|
---|
| 676 | # ifdef OPENSSL_SYS_WINDOWS
|
---|
| 677 | int timeout;
|
---|
| 678 | struct timeval *tv = (struct timeval *)ptr;
|
---|
| 679 |
|
---|
| 680 | sz.i = sizeof(timeout);
|
---|
| 681 | if (getsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO,
|
---|
| 682 | (void *)&timeout, &sz.i) < 0) {
|
---|
| 683 | perror("getsockopt");
|
---|
| 684 | ret = -1;
|
---|
| 685 | } else {
|
---|
| 686 | tv->tv_sec = timeout / 1000;
|
---|
| 687 | tv->tv_usec = (timeout % 1000) * 1000;
|
---|
| 688 | ret = sizeof(*tv);
|
---|
| 689 | }
|
---|
| 690 | # else
|
---|
| 691 | sz.i = sizeof(struct timeval);
|
---|
| 692 | if (getsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO,
|
---|
| 693 | ptr, (void *)&sz) < 0) {
|
---|
| 694 | perror("getsockopt");
|
---|
| 695 | ret = -1;
|
---|
| 696 | } else if (sizeof(sz.s) != sizeof(sz.i) && sz.i == 0) {
|
---|
| 697 | OPENSSL_assert(sz.s <= sizeof(struct timeval));
|
---|
| 698 | ret = (int)sz.s;
|
---|
| 699 | } else
|
---|
| 700 | ret = sz.i;
|
---|
| 701 | # endif
|
---|
| 702 | }
|
---|
| 703 | break;
|
---|
| 704 | # endif
|
---|
| 705 | case BIO_CTRL_DGRAM_GET_SEND_TIMER_EXP:
|
---|
| 706 | /* fall-through */
|
---|
| 707 | case BIO_CTRL_DGRAM_GET_RECV_TIMER_EXP:
|
---|
| 708 | # ifdef OPENSSL_SYS_WINDOWS
|
---|
| 709 | d_errno = (data->_errno == WSAETIMEDOUT);
|
---|
| 710 | # else
|
---|
| 711 | d_errno = (data->_errno == EAGAIN);
|
---|
| 712 | # endif
|
---|
| 713 | if (d_errno) {
|
---|
| 714 | ret = 1;
|
---|
| 715 | data->_errno = 0;
|
---|
| 716 | } else
|
---|
| 717 | ret = 0;
|
---|
| 718 | break;
|
---|
| 719 | # ifdef EMSGSIZE
|
---|
| 720 | case BIO_CTRL_DGRAM_MTU_EXCEEDED:
|
---|
| 721 | if (data->_errno == EMSGSIZE) {
|
---|
| 722 | ret = 1;
|
---|
| 723 | data->_errno = 0;
|
---|
| 724 | } else
|
---|
| 725 | ret = 0;
|
---|
| 726 | break;
|
---|
| 727 | # endif
|
---|
| 728 | case BIO_CTRL_DGRAM_SET_DONT_FRAG:
|
---|
| 729 | sockopt_val = num ? 1 : 0;
|
---|
| 730 |
|
---|
| 731 | switch (data->peer.sa.sa_family) {
|
---|
| 732 | case AF_INET:
|
---|
| 733 | # if defined(IP_DONTFRAG)
|
---|
| 734 | if ((ret = setsockopt(b->num, IPPROTO_IP, IP_DONTFRAG,
|
---|
| 735 | &sockopt_val, sizeof(sockopt_val))) < 0) {
|
---|
| 736 | perror("setsockopt");
|
---|
| 737 | ret = -1;
|
---|
| 738 | }
|
---|
| 739 | # elif defined(OPENSSL_SYS_LINUX) && defined(IP_MTU_DISCOVER) && defined (IP_PMTUDISC_PROBE)
|
---|
| 740 | if ((sockopt_val = num ? IP_PMTUDISC_PROBE : IP_PMTUDISC_DONT),
|
---|
| 741 | (ret = setsockopt(b->num, IPPROTO_IP, IP_MTU_DISCOVER,
|
---|
| 742 | &sockopt_val, sizeof(sockopt_val))) < 0) {
|
---|
| 743 | perror("setsockopt");
|
---|
| 744 | ret = -1;
|
---|
| 745 | }
|
---|
| 746 | # elif defined(OPENSSL_SYS_WINDOWS) && defined(IP_DONTFRAGMENT)
|
---|
| 747 | if ((ret = setsockopt(b->num, IPPROTO_IP, IP_DONTFRAGMENT,
|
---|
| 748 | (const char *)&sockopt_val,
|
---|
| 749 | sizeof(sockopt_val))) < 0) {
|
---|
| 750 | perror("setsockopt");
|
---|
| 751 | ret = -1;
|
---|
| 752 | }
|
---|
| 753 | # else
|
---|
| 754 | ret = -1;
|
---|
| 755 | # endif
|
---|
| 756 | break;
|
---|
| 757 | # if OPENSSL_USE_IPV6
|
---|
| 758 | case AF_INET6:
|
---|
| 759 | # if defined(IPV6_DONTFRAG)
|
---|
| 760 | if ((ret = setsockopt(b->num, IPPROTO_IPV6, IPV6_DONTFRAG,
|
---|
| 761 | (const void *)&sockopt_val,
|
---|
| 762 | sizeof(sockopt_val))) < 0) {
|
---|
| 763 | perror("setsockopt");
|
---|
| 764 | ret = -1;
|
---|
| 765 | }
|
---|
| 766 | # elif defined(OPENSSL_SYS_LINUX) && defined(IPV6_MTUDISCOVER)
|
---|
| 767 | if ((sockopt_val = num ? IP_PMTUDISC_PROBE : IP_PMTUDISC_DONT),
|
---|
| 768 | (ret = setsockopt(b->num, IPPROTO_IPV6, IPV6_MTU_DISCOVER,
|
---|
| 769 | &sockopt_val, sizeof(sockopt_val))) < 0) {
|
---|
| 770 | perror("setsockopt");
|
---|
| 771 | ret = -1;
|
---|
| 772 | }
|
---|
| 773 | # else
|
---|
| 774 | ret = -1;
|
---|
| 775 | # endif
|
---|
| 776 | break;
|
---|
| 777 | # endif
|
---|
| 778 | default:
|
---|
| 779 | ret = -1;
|
---|
| 780 | break;
|
---|
| 781 | }
|
---|
| 782 | break;
|
---|
| 783 | case BIO_CTRL_DGRAM_GET_MTU_OVERHEAD:
|
---|
| 784 | ret = dgram_get_mtu_overhead(data);
|
---|
| 785 | break;
|
---|
| 786 | case BIO_CTRL_DGRAM_SET_PEEK_MODE:
|
---|
| 787 | data->peekmode = (unsigned int)num;
|
---|
| 788 | break;
|
---|
| 789 | default:
|
---|
| 790 | ret = 0;
|
---|
| 791 | break;
|
---|
| 792 | }
|
---|
| 793 | return (ret);
|
---|
| 794 | }
|
---|
| 795 |
|
---|
| 796 | static int dgram_puts(BIO *bp, const char *str)
|
---|
| 797 | {
|
---|
| 798 | int n, ret;
|
---|
| 799 |
|
---|
| 800 | n = strlen(str);
|
---|
| 801 | ret = dgram_write(bp, str, n);
|
---|
| 802 | return (ret);
|
---|
| 803 | }
|
---|
| 804 |
|
---|
| 805 | # ifndef OPENSSL_NO_SCTP
|
---|
| 806 | const BIO_METHOD *BIO_s_datagram_sctp(void)
|
---|
| 807 | {
|
---|
| 808 | return (&methods_dgramp_sctp);
|
---|
| 809 | }
|
---|
| 810 |
|
---|
| 811 | BIO *BIO_new_dgram_sctp(int fd, int close_flag)
|
---|
| 812 | {
|
---|
| 813 | BIO *bio;
|
---|
| 814 | int ret, optval = 20000;
|
---|
| 815 | int auth_data = 0, auth_forward = 0;
|
---|
| 816 | unsigned char *p;
|
---|
| 817 | struct sctp_authchunk auth;
|
---|
| 818 | struct sctp_authchunks *authchunks;
|
---|
| 819 | socklen_t sockopt_len;
|
---|
| 820 | # ifdef SCTP_AUTHENTICATION_EVENT
|
---|
| 821 | # ifdef SCTP_EVENT
|
---|
| 822 | struct sctp_event event;
|
---|
| 823 | # else
|
---|
| 824 | struct sctp_event_subscribe event;
|
---|
| 825 | # endif
|
---|
| 826 | # endif
|
---|
| 827 |
|
---|
| 828 | bio = BIO_new(BIO_s_datagram_sctp());
|
---|
| 829 | if (bio == NULL)
|
---|
| 830 | return (NULL);
|
---|
| 831 | BIO_set_fd(bio, fd, close_flag);
|
---|
| 832 |
|
---|
| 833 | /* Activate SCTP-AUTH for DATA and FORWARD-TSN chunks */
|
---|
| 834 | auth.sauth_chunk = OPENSSL_SCTP_DATA_CHUNK_TYPE;
|
---|
| 835 | ret =
|
---|
| 836 | setsockopt(fd, IPPROTO_SCTP, SCTP_AUTH_CHUNK, &auth,
|
---|
| 837 | sizeof(struct sctp_authchunk));
|
---|
| 838 | if (ret < 0) {
|
---|
| 839 | BIO_vfree(bio);
|
---|
| 840 | return (NULL);
|
---|
| 841 | }
|
---|
| 842 | auth.sauth_chunk = OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE;
|
---|
| 843 | ret =
|
---|
| 844 | setsockopt(fd, IPPROTO_SCTP, SCTP_AUTH_CHUNK, &auth,
|
---|
| 845 | sizeof(struct sctp_authchunk));
|
---|
| 846 | if (ret < 0) {
|
---|
| 847 | BIO_vfree(bio);
|
---|
| 848 | return (NULL);
|
---|
| 849 | }
|
---|
| 850 |
|
---|
| 851 | /*
|
---|
| 852 | * Test if activation was successful. When using accept(), SCTP-AUTH has
|
---|
| 853 | * to be activated for the listening socket already, otherwise the
|
---|
| 854 | * connected socket won't use it.
|
---|
| 855 | */
|
---|
| 856 | sockopt_len = (socklen_t) (sizeof(sctp_assoc_t) + 256 * sizeof(uint8_t));
|
---|
| 857 | authchunks = OPENSSL_zalloc(sockopt_len);
|
---|
| 858 | if (authchunks == NULL) {
|
---|
| 859 | BIO_vfree(bio);
|
---|
| 860 | return (NULL);
|
---|
| 861 | }
|
---|
| 862 | ret = getsockopt(fd, IPPROTO_SCTP, SCTP_LOCAL_AUTH_CHUNKS, authchunks,
|
---|
| 863 | &sockopt_len);
|
---|
| 864 | if (ret < 0) {
|
---|
| 865 | OPENSSL_free(authchunks);
|
---|
| 866 | BIO_vfree(bio);
|
---|
| 867 | return (NULL);
|
---|
| 868 | }
|
---|
| 869 |
|
---|
| 870 | for (p = (unsigned char *)authchunks->gauth_chunks;
|
---|
| 871 | p < (unsigned char *)authchunks + sockopt_len;
|
---|
| 872 | p += sizeof(uint8_t)) {
|
---|
| 873 | if (*p == OPENSSL_SCTP_DATA_CHUNK_TYPE)
|
---|
| 874 | auth_data = 1;
|
---|
| 875 | if (*p == OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE)
|
---|
| 876 | auth_forward = 1;
|
---|
| 877 | }
|
---|
| 878 |
|
---|
| 879 | OPENSSL_free(authchunks);
|
---|
| 880 |
|
---|
| 881 | OPENSSL_assert(auth_data);
|
---|
| 882 | OPENSSL_assert(auth_forward);
|
---|
| 883 |
|
---|
| 884 | # ifdef SCTP_AUTHENTICATION_EVENT
|
---|
| 885 | # ifdef SCTP_EVENT
|
---|
| 886 | memset(&event, 0, sizeof(event));
|
---|
| 887 | event.se_assoc_id = 0;
|
---|
| 888 | event.se_type = SCTP_AUTHENTICATION_EVENT;
|
---|
| 889 | event.se_on = 1;
|
---|
| 890 | ret =
|
---|
| 891 | setsockopt(fd, IPPROTO_SCTP, SCTP_EVENT, &event,
|
---|
| 892 | sizeof(struct sctp_event));
|
---|
| 893 | if (ret < 0) {
|
---|
| 894 | BIO_vfree(bio);
|
---|
| 895 | return (NULL);
|
---|
| 896 | }
|
---|
| 897 | # else
|
---|
| 898 | sockopt_len = (socklen_t) sizeof(struct sctp_event_subscribe);
|
---|
| 899 | ret = getsockopt(fd, IPPROTO_SCTP, SCTP_EVENTS, &event, &sockopt_len);
|
---|
| 900 | if (ret < 0) {
|
---|
| 901 | BIO_vfree(bio);
|
---|
| 902 | return (NULL);
|
---|
| 903 | }
|
---|
| 904 |
|
---|
| 905 | event.sctp_authentication_event = 1;
|
---|
| 906 |
|
---|
| 907 | ret =
|
---|
| 908 | setsockopt(fd, IPPROTO_SCTP, SCTP_EVENTS, &event,
|
---|
| 909 | sizeof(struct sctp_event_subscribe));
|
---|
| 910 | if (ret < 0) {
|
---|
| 911 | BIO_vfree(bio);
|
---|
| 912 | return (NULL);
|
---|
| 913 | }
|
---|
| 914 | # endif
|
---|
| 915 | # endif
|
---|
| 916 |
|
---|
| 917 | /*
|
---|
| 918 | * Disable partial delivery by setting the min size larger than the max
|
---|
| 919 | * record size of 2^14 + 2048 + 13
|
---|
| 920 | */
|
---|
| 921 | ret =
|
---|
| 922 | setsockopt(fd, IPPROTO_SCTP, SCTP_PARTIAL_DELIVERY_POINT, &optval,
|
---|
| 923 | sizeof(optval));
|
---|
| 924 | if (ret < 0) {
|
---|
| 925 | BIO_vfree(bio);
|
---|
| 926 | return (NULL);
|
---|
| 927 | }
|
---|
| 928 |
|
---|
| 929 | return (bio);
|
---|
| 930 | }
|
---|
| 931 |
|
---|
| 932 | int BIO_dgram_is_sctp(BIO *bio)
|
---|
| 933 | {
|
---|
| 934 | return (BIO_method_type(bio) == BIO_TYPE_DGRAM_SCTP);
|
---|
| 935 | }
|
---|
| 936 |
|
---|
| 937 | static int dgram_sctp_new(BIO *bi)
|
---|
| 938 | {
|
---|
| 939 | bio_dgram_sctp_data *data = NULL;
|
---|
| 940 |
|
---|
| 941 | bi->init = 0;
|
---|
| 942 | bi->num = 0;
|
---|
| 943 | data = OPENSSL_zalloc(sizeof(*data));
|
---|
| 944 | if (data == NULL)
|
---|
| 945 | return 0;
|
---|
| 946 | # ifdef SCTP_PR_SCTP_NONE
|
---|
| 947 | data->prinfo.pr_policy = SCTP_PR_SCTP_NONE;
|
---|
| 948 | # endif
|
---|
| 949 | bi->ptr = data;
|
---|
| 950 |
|
---|
| 951 | bi->flags = 0;
|
---|
| 952 | return (1);
|
---|
| 953 | }
|
---|
| 954 |
|
---|
| 955 | static int dgram_sctp_free(BIO *a)
|
---|
| 956 | {
|
---|
| 957 | bio_dgram_sctp_data *data;
|
---|
| 958 |
|
---|
| 959 | if (a == NULL)
|
---|
| 960 | return (0);
|
---|
| 961 | if (!dgram_clear(a))
|
---|
| 962 | return 0;
|
---|
| 963 |
|
---|
| 964 | data = (bio_dgram_sctp_data *) a->ptr;
|
---|
| 965 | if (data != NULL) {
|
---|
| 966 | OPENSSL_free(data->saved_message.data);
|
---|
| 967 | OPENSSL_free(data);
|
---|
| 968 | }
|
---|
| 969 |
|
---|
| 970 | return (1);
|
---|
| 971 | }
|
---|
| 972 |
|
---|
| 973 | # ifdef SCTP_AUTHENTICATION_EVENT
|
---|
| 974 | void dgram_sctp_handle_auth_free_key_event(BIO *b,
|
---|
| 975 | union sctp_notification *snp)
|
---|
| 976 | {
|
---|
| 977 | int ret;
|
---|
| 978 | struct sctp_authkey_event *authkeyevent = &snp->sn_auth_event;
|
---|
| 979 |
|
---|
| 980 | if (authkeyevent->auth_indication == SCTP_AUTH_FREE_KEY) {
|
---|
| 981 | struct sctp_authkeyid authkeyid;
|
---|
| 982 |
|
---|
| 983 | /* delete key */
|
---|
| 984 | authkeyid.scact_keynumber = authkeyevent->auth_keynumber;
|
---|
| 985 | ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_DELETE_KEY,
|
---|
| 986 | &authkeyid, sizeof(struct sctp_authkeyid));
|
---|
| 987 | }
|
---|
| 988 | }
|
---|
| 989 | # endif
|
---|
| 990 |
|
---|
| 991 | static int dgram_sctp_read(BIO *b, char *out, int outl)
|
---|
| 992 | {
|
---|
| 993 | int ret = 0, n = 0, i, optval;
|
---|
| 994 | socklen_t optlen;
|
---|
| 995 | bio_dgram_sctp_data *data = (bio_dgram_sctp_data *) b->ptr;
|
---|
| 996 | union sctp_notification *snp;
|
---|
| 997 | struct msghdr msg;
|
---|
| 998 | struct iovec iov;
|
---|
| 999 | struct cmsghdr *cmsg;
|
---|
| 1000 | char cmsgbuf[512];
|
---|
| 1001 |
|
---|
| 1002 | if (out != NULL) {
|
---|
| 1003 | clear_socket_error();
|
---|
| 1004 |
|
---|
| 1005 | do {
|
---|
| 1006 | memset(&data->rcvinfo, 0, sizeof(data->rcvinfo));
|
---|
| 1007 | iov.iov_base = out;
|
---|
| 1008 | iov.iov_len = outl;
|
---|
| 1009 | msg.msg_name = NULL;
|
---|
| 1010 | msg.msg_namelen = 0;
|
---|
| 1011 | msg.msg_iov = &iov;
|
---|
| 1012 | msg.msg_iovlen = 1;
|
---|
| 1013 | msg.msg_control = cmsgbuf;
|
---|
| 1014 | msg.msg_controllen = 512;
|
---|
| 1015 | msg.msg_flags = 0;
|
---|
| 1016 | n = recvmsg(b->num, &msg, 0);
|
---|
| 1017 |
|
---|
| 1018 | if (n <= 0) {
|
---|
| 1019 | if (n < 0)
|
---|
| 1020 | ret = n;
|
---|
| 1021 | break;
|
---|
| 1022 | }
|
---|
| 1023 |
|
---|
| 1024 | if (msg.msg_controllen > 0) {
|
---|
| 1025 | for (cmsg = CMSG_FIRSTHDR(&msg); cmsg;
|
---|
| 1026 | cmsg = CMSG_NXTHDR(&msg, cmsg)) {
|
---|
| 1027 | if (cmsg->cmsg_level != IPPROTO_SCTP)
|
---|
| 1028 | continue;
|
---|
| 1029 | # ifdef SCTP_RCVINFO
|
---|
| 1030 | if (cmsg->cmsg_type == SCTP_RCVINFO) {
|
---|
| 1031 | struct sctp_rcvinfo *rcvinfo;
|
---|
| 1032 |
|
---|
| 1033 | rcvinfo = (struct sctp_rcvinfo *)CMSG_DATA(cmsg);
|
---|
| 1034 | data->rcvinfo.rcv_sid = rcvinfo->rcv_sid;
|
---|
| 1035 | data->rcvinfo.rcv_ssn = rcvinfo->rcv_ssn;
|
---|
| 1036 | data->rcvinfo.rcv_flags = rcvinfo->rcv_flags;
|
---|
| 1037 | data->rcvinfo.rcv_ppid = rcvinfo->rcv_ppid;
|
---|
| 1038 | data->rcvinfo.rcv_tsn = rcvinfo->rcv_tsn;
|
---|
| 1039 | data->rcvinfo.rcv_cumtsn = rcvinfo->rcv_cumtsn;
|
---|
| 1040 | data->rcvinfo.rcv_context = rcvinfo->rcv_context;
|
---|
| 1041 | }
|
---|
| 1042 | # endif
|
---|
| 1043 | # ifdef SCTP_SNDRCV
|
---|
| 1044 | if (cmsg->cmsg_type == SCTP_SNDRCV) {
|
---|
| 1045 | struct sctp_sndrcvinfo *sndrcvinfo;
|
---|
| 1046 |
|
---|
| 1047 | sndrcvinfo =
|
---|
| 1048 | (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg);
|
---|
| 1049 | data->rcvinfo.rcv_sid = sndrcvinfo->sinfo_stream;
|
---|
| 1050 | data->rcvinfo.rcv_ssn = sndrcvinfo->sinfo_ssn;
|
---|
| 1051 | data->rcvinfo.rcv_flags = sndrcvinfo->sinfo_flags;
|
---|
| 1052 | data->rcvinfo.rcv_ppid = sndrcvinfo->sinfo_ppid;
|
---|
| 1053 | data->rcvinfo.rcv_tsn = sndrcvinfo->sinfo_tsn;
|
---|
| 1054 | data->rcvinfo.rcv_cumtsn = sndrcvinfo->sinfo_cumtsn;
|
---|
| 1055 | data->rcvinfo.rcv_context = sndrcvinfo->sinfo_context;
|
---|
| 1056 | }
|
---|
| 1057 | # endif
|
---|
| 1058 | }
|
---|
| 1059 | }
|
---|
| 1060 |
|
---|
| 1061 | if (msg.msg_flags & MSG_NOTIFICATION) {
|
---|
| 1062 | snp = (union sctp_notification *)out;
|
---|
| 1063 | if (snp->sn_header.sn_type == SCTP_SENDER_DRY_EVENT) {
|
---|
| 1064 | # ifdef SCTP_EVENT
|
---|
| 1065 | struct sctp_event event;
|
---|
| 1066 | # else
|
---|
| 1067 | struct sctp_event_subscribe event;
|
---|
| 1068 | socklen_t eventsize;
|
---|
| 1069 | # endif
|
---|
| 1070 | /*
|
---|
| 1071 | * If a message has been delayed until the socket is dry,
|
---|
| 1072 | * it can be sent now.
|
---|
| 1073 | */
|
---|
| 1074 | if (data->saved_message.length > 0) {
|
---|
| 1075 | i = dgram_sctp_write(data->saved_message.bio,
|
---|
| 1076 | data->saved_message.data,
|
---|
| 1077 | data->saved_message.length);
|
---|
| 1078 | if (i < 0) {
|
---|
| 1079 | ret = i;
|
---|
| 1080 | break;
|
---|
| 1081 | }
|
---|
| 1082 | OPENSSL_free(data->saved_message.data);
|
---|
| 1083 | data->saved_message.data = NULL;
|
---|
| 1084 | data->saved_message.length = 0;
|
---|
| 1085 | }
|
---|
| 1086 |
|
---|
| 1087 | /* disable sender dry event */
|
---|
| 1088 | # ifdef SCTP_EVENT
|
---|
| 1089 | memset(&event, 0, sizeof(event));
|
---|
| 1090 | event.se_assoc_id = 0;
|
---|
| 1091 | event.se_type = SCTP_SENDER_DRY_EVENT;
|
---|
| 1092 | event.se_on = 0;
|
---|
| 1093 | i = setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENT, &event,
|
---|
| 1094 | sizeof(struct sctp_event));
|
---|
| 1095 | if (i < 0) {
|
---|
| 1096 | ret = i;
|
---|
| 1097 | break;
|
---|
| 1098 | }
|
---|
| 1099 | # else
|
---|
| 1100 | eventsize = sizeof(struct sctp_event_subscribe);
|
---|
| 1101 | i = getsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event,
|
---|
| 1102 | &eventsize);
|
---|
| 1103 | if (i < 0) {
|
---|
| 1104 | ret = i;
|
---|
| 1105 | break;
|
---|
| 1106 | }
|
---|
| 1107 |
|
---|
| 1108 | event.sctp_sender_dry_event = 0;
|
---|
| 1109 |
|
---|
| 1110 | i = setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event,
|
---|
| 1111 | sizeof(struct sctp_event_subscribe));
|
---|
| 1112 | if (i < 0) {
|
---|
| 1113 | ret = i;
|
---|
| 1114 | break;
|
---|
| 1115 | }
|
---|
| 1116 | # endif
|
---|
| 1117 | }
|
---|
| 1118 | # ifdef SCTP_AUTHENTICATION_EVENT
|
---|
| 1119 | if (snp->sn_header.sn_type == SCTP_AUTHENTICATION_EVENT)
|
---|
| 1120 | dgram_sctp_handle_auth_free_key_event(b, snp);
|
---|
| 1121 | # endif
|
---|
| 1122 |
|
---|
| 1123 | if (data->handle_notifications != NULL)
|
---|
| 1124 | data->handle_notifications(b, data->notification_context,
|
---|
| 1125 | (void *)out);
|
---|
| 1126 |
|
---|
| 1127 | memset(out, 0, outl);
|
---|
| 1128 | } else
|
---|
| 1129 | ret += n;
|
---|
| 1130 | }
|
---|
| 1131 | while ((msg.msg_flags & MSG_NOTIFICATION) && (msg.msg_flags & MSG_EOR)
|
---|
| 1132 | && (ret < outl));
|
---|
| 1133 |
|
---|
| 1134 | if (ret > 0 && !(msg.msg_flags & MSG_EOR)) {
|
---|
| 1135 | /* Partial message read, this should never happen! */
|
---|
| 1136 |
|
---|
| 1137 | /*
|
---|
| 1138 | * The buffer was too small, this means the peer sent a message
|
---|
| 1139 | * that was larger than allowed.
|
---|
| 1140 | */
|
---|
| 1141 | if (ret == outl)
|
---|
| 1142 | return -1;
|
---|
| 1143 |
|
---|
| 1144 | /*
|
---|
| 1145 | * Test if socket buffer can handle max record size (2^14 + 2048
|
---|
| 1146 | * + 13)
|
---|
| 1147 | */
|
---|
| 1148 | optlen = (socklen_t) sizeof(int);
|
---|
| 1149 | ret = getsockopt(b->num, SOL_SOCKET, SO_RCVBUF, &optval, &optlen);
|
---|
| 1150 | if (ret >= 0)
|
---|
| 1151 | OPENSSL_assert(optval >= 18445);
|
---|
| 1152 |
|
---|
| 1153 | /*
|
---|
| 1154 | * Test if SCTP doesn't partially deliver below max record size
|
---|
| 1155 | * (2^14 + 2048 + 13)
|
---|
| 1156 | */
|
---|
| 1157 | optlen = (socklen_t) sizeof(int);
|
---|
| 1158 | ret =
|
---|
| 1159 | getsockopt(b->num, IPPROTO_SCTP, SCTP_PARTIAL_DELIVERY_POINT,
|
---|
| 1160 | &optval, &optlen);
|
---|
| 1161 | if (ret >= 0)
|
---|
| 1162 | OPENSSL_assert(optval >= 18445);
|
---|
| 1163 |
|
---|
| 1164 | /*
|
---|
| 1165 | * Partially delivered notification??? Probably a bug....
|
---|
| 1166 | */
|
---|
| 1167 | OPENSSL_assert(!(msg.msg_flags & MSG_NOTIFICATION));
|
---|
| 1168 |
|
---|
| 1169 | /*
|
---|
| 1170 | * Everything seems ok till now, so it's most likely a message
|
---|
| 1171 | * dropped by PR-SCTP.
|
---|
| 1172 | */
|
---|
| 1173 | memset(out, 0, outl);
|
---|
| 1174 | BIO_set_retry_read(b);
|
---|
| 1175 | return -1;
|
---|
| 1176 | }
|
---|
| 1177 |
|
---|
| 1178 | BIO_clear_retry_flags(b);
|
---|
| 1179 | if (ret < 0) {
|
---|
| 1180 | if (BIO_dgram_should_retry(ret)) {
|
---|
| 1181 | BIO_set_retry_read(b);
|
---|
| 1182 | data->_errno = get_last_socket_error();
|
---|
| 1183 | }
|
---|
| 1184 | }
|
---|
| 1185 |
|
---|
| 1186 | /* Test if peer uses SCTP-AUTH before continuing */
|
---|
| 1187 | if (!data->peer_auth_tested) {
|
---|
| 1188 | int ii, auth_data = 0, auth_forward = 0;
|
---|
| 1189 | unsigned char *p;
|
---|
| 1190 | struct sctp_authchunks *authchunks;
|
---|
| 1191 |
|
---|
| 1192 | optlen =
|
---|
| 1193 | (socklen_t) (sizeof(sctp_assoc_t) + 256 * sizeof(uint8_t));
|
---|
| 1194 | authchunks = OPENSSL_malloc(optlen);
|
---|
| 1195 | if (authchunks == NULL) {
|
---|
| 1196 | BIOerr(BIO_F_DGRAM_SCTP_READ, ERR_R_MALLOC_FAILURE);
|
---|
| 1197 | return -1;
|
---|
| 1198 | }
|
---|
| 1199 | memset(authchunks, 0, optlen);
|
---|
| 1200 | ii = getsockopt(b->num, IPPROTO_SCTP, SCTP_PEER_AUTH_CHUNKS,
|
---|
| 1201 | authchunks, &optlen);
|
---|
| 1202 |
|
---|
| 1203 | if (ii >= 0)
|
---|
| 1204 | for (p = (unsigned char *)authchunks->gauth_chunks;
|
---|
| 1205 | p < (unsigned char *)authchunks + optlen;
|
---|
| 1206 | p += sizeof(uint8_t)) {
|
---|
| 1207 | if (*p == OPENSSL_SCTP_DATA_CHUNK_TYPE)
|
---|
| 1208 | auth_data = 1;
|
---|
| 1209 | if (*p == OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE)
|
---|
| 1210 | auth_forward = 1;
|
---|
| 1211 | }
|
---|
| 1212 |
|
---|
| 1213 | OPENSSL_free(authchunks);
|
---|
| 1214 |
|
---|
| 1215 | if (!auth_data || !auth_forward) {
|
---|
| 1216 | BIOerr(BIO_F_DGRAM_SCTP_READ, BIO_R_CONNECT_ERROR);
|
---|
| 1217 | return -1;
|
---|
| 1218 | }
|
---|
| 1219 |
|
---|
| 1220 | data->peer_auth_tested = 1;
|
---|
| 1221 | }
|
---|
| 1222 | }
|
---|
| 1223 | return (ret);
|
---|
| 1224 | }
|
---|
| 1225 |
|
---|
| 1226 | /*
|
---|
| 1227 | * dgram_sctp_write - send message on SCTP socket
|
---|
| 1228 | * @b: BIO to write to
|
---|
| 1229 | * @in: data to send
|
---|
| 1230 | * @inl: amount of bytes in @in to send
|
---|
| 1231 | *
|
---|
| 1232 | * Returns -1 on error or the sent amount of bytes on success
|
---|
| 1233 | */
|
---|
| 1234 | static int dgram_sctp_write(BIO *b, const char *in, int inl)
|
---|
| 1235 | {
|
---|
| 1236 | int ret;
|
---|
| 1237 | bio_dgram_sctp_data *data = (bio_dgram_sctp_data *) b->ptr;
|
---|
| 1238 | struct bio_dgram_sctp_sndinfo *sinfo = &(data->sndinfo);
|
---|
| 1239 | struct bio_dgram_sctp_prinfo *pinfo = &(data->prinfo);
|
---|
| 1240 | struct bio_dgram_sctp_sndinfo handshake_sinfo;
|
---|
| 1241 | struct iovec iov[1];
|
---|
| 1242 | struct msghdr msg;
|
---|
| 1243 | struct cmsghdr *cmsg;
|
---|
| 1244 | # if defined(SCTP_SNDINFO) && defined(SCTP_PRINFO)
|
---|
| 1245 | char cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndinfo)) +
|
---|
| 1246 | CMSG_SPACE(sizeof(struct sctp_prinfo))];
|
---|
| 1247 | struct sctp_sndinfo *sndinfo;
|
---|
| 1248 | struct sctp_prinfo *prinfo;
|
---|
| 1249 | # else
|
---|
| 1250 | char cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))];
|
---|
| 1251 | struct sctp_sndrcvinfo *sndrcvinfo;
|
---|
| 1252 | # endif
|
---|
| 1253 |
|
---|
| 1254 | clear_socket_error();
|
---|
| 1255 |
|
---|
| 1256 | /*
|
---|
| 1257 | * If we're send anything else than application data, disable all user
|
---|
| 1258 | * parameters and flags.
|
---|
| 1259 | */
|
---|
| 1260 | if (in[0] != 23) {
|
---|
| 1261 | memset(&handshake_sinfo, 0, sizeof(handshake_sinfo));
|
---|
| 1262 | # ifdef SCTP_SACK_IMMEDIATELY
|
---|
| 1263 | handshake_sinfo.snd_flags = SCTP_SACK_IMMEDIATELY;
|
---|
| 1264 | # endif
|
---|
| 1265 | sinfo = &handshake_sinfo;
|
---|
| 1266 | }
|
---|
| 1267 |
|
---|
| 1268 | /*
|
---|
| 1269 | * If we have to send a shutdown alert message and the socket is not dry
|
---|
| 1270 | * yet, we have to save it and send it as soon as the socket gets dry.
|
---|
| 1271 | */
|
---|
| 1272 | if (data->save_shutdown) {
|
---|
| 1273 | ret = BIO_dgram_sctp_wait_for_dry(b);
|
---|
| 1274 | if (ret < 0) {
|
---|
| 1275 | return -1;
|
---|
| 1276 | }
|
---|
| 1277 | if (ret == 0) {
|
---|
| 1278 | char *tmp;
|
---|
| 1279 | data->saved_message.bio = b;
|
---|
| 1280 | if ((tmp = OPENSSL_malloc(inl)) == NULL) {
|
---|
| 1281 | BIOerr(BIO_F_DGRAM_SCTP_WRITE, ERR_R_MALLOC_FAILURE);
|
---|
| 1282 | return -1;
|
---|
| 1283 | }
|
---|
| 1284 | OPENSSL_free(data->saved_message.data);
|
---|
| 1285 | data->saved_message.data = tmp;
|
---|
| 1286 | memcpy(data->saved_message.data, in, inl);
|
---|
| 1287 | data->saved_message.length = inl;
|
---|
| 1288 | return inl;
|
---|
| 1289 | }
|
---|
| 1290 | }
|
---|
| 1291 |
|
---|
| 1292 | iov[0].iov_base = (char *)in;
|
---|
| 1293 | iov[0].iov_len = inl;
|
---|
| 1294 | msg.msg_name = NULL;
|
---|
| 1295 | msg.msg_namelen = 0;
|
---|
| 1296 | msg.msg_iov = iov;
|
---|
| 1297 | msg.msg_iovlen = 1;
|
---|
| 1298 | msg.msg_control = (caddr_t) cmsgbuf;
|
---|
| 1299 | msg.msg_controllen = 0;
|
---|
| 1300 | msg.msg_flags = 0;
|
---|
| 1301 | # if defined(SCTP_SNDINFO) && defined(SCTP_PRINFO)
|
---|
| 1302 | cmsg = (struct cmsghdr *)cmsgbuf;
|
---|
| 1303 | cmsg->cmsg_level = IPPROTO_SCTP;
|
---|
| 1304 | cmsg->cmsg_type = SCTP_SNDINFO;
|
---|
| 1305 | cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndinfo));
|
---|
| 1306 | sndinfo = (struct sctp_sndinfo *)CMSG_DATA(cmsg);
|
---|
| 1307 | memset(sndinfo, 0, sizeof(*sndinfo));
|
---|
| 1308 | sndinfo->snd_sid = sinfo->snd_sid;
|
---|
| 1309 | sndinfo->snd_flags = sinfo->snd_flags;
|
---|
| 1310 | sndinfo->snd_ppid = sinfo->snd_ppid;
|
---|
| 1311 | sndinfo->snd_context = sinfo->snd_context;
|
---|
| 1312 | msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndinfo));
|
---|
| 1313 |
|
---|
| 1314 | cmsg =
|
---|
| 1315 | (struct cmsghdr *)&cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndinfo))];
|
---|
| 1316 | cmsg->cmsg_level = IPPROTO_SCTP;
|
---|
| 1317 | cmsg->cmsg_type = SCTP_PRINFO;
|
---|
| 1318 | cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_prinfo));
|
---|
| 1319 | prinfo = (struct sctp_prinfo *)CMSG_DATA(cmsg);
|
---|
| 1320 | memset(prinfo, 0, sizeof(*prinfo));
|
---|
| 1321 | prinfo->pr_policy = pinfo->pr_policy;
|
---|
| 1322 | prinfo->pr_value = pinfo->pr_value;
|
---|
| 1323 | msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_prinfo));
|
---|
| 1324 | # else
|
---|
| 1325 | cmsg = (struct cmsghdr *)cmsgbuf;
|
---|
| 1326 | cmsg->cmsg_level = IPPROTO_SCTP;
|
---|
| 1327 | cmsg->cmsg_type = SCTP_SNDRCV;
|
---|
| 1328 | cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo));
|
---|
| 1329 | sndrcvinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg);
|
---|
| 1330 | memset(sndrcvinfo, 0, sizeof(*sndrcvinfo));
|
---|
| 1331 | sndrcvinfo->sinfo_stream = sinfo->snd_sid;
|
---|
| 1332 | sndrcvinfo->sinfo_flags = sinfo->snd_flags;
|
---|
| 1333 | # ifdef __FreeBSD__
|
---|
| 1334 | sndrcvinfo->sinfo_flags |= pinfo->pr_policy;
|
---|
| 1335 | # endif
|
---|
| 1336 | sndrcvinfo->sinfo_ppid = sinfo->snd_ppid;
|
---|
| 1337 | sndrcvinfo->sinfo_context = sinfo->snd_context;
|
---|
| 1338 | sndrcvinfo->sinfo_timetolive = pinfo->pr_value;
|
---|
| 1339 | msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndrcvinfo));
|
---|
| 1340 | # endif
|
---|
| 1341 |
|
---|
| 1342 | ret = sendmsg(b->num, &msg, 0);
|
---|
| 1343 |
|
---|
| 1344 | BIO_clear_retry_flags(b);
|
---|
| 1345 | if (ret <= 0) {
|
---|
| 1346 | if (BIO_dgram_should_retry(ret)) {
|
---|
| 1347 | BIO_set_retry_write(b);
|
---|
| 1348 | data->_errno = get_last_socket_error();
|
---|
| 1349 | }
|
---|
| 1350 | }
|
---|
| 1351 | return (ret);
|
---|
| 1352 | }
|
---|
| 1353 |
|
---|
| 1354 | static long dgram_sctp_ctrl(BIO *b, int cmd, long num, void *ptr)
|
---|
| 1355 | {
|
---|
| 1356 | long ret = 1;
|
---|
| 1357 | bio_dgram_sctp_data *data = NULL;
|
---|
| 1358 | socklen_t sockopt_len = 0;
|
---|
| 1359 | struct sctp_authkeyid authkeyid;
|
---|
| 1360 | struct sctp_authkey *authkey = NULL;
|
---|
| 1361 |
|
---|
| 1362 | data = (bio_dgram_sctp_data *) b->ptr;
|
---|
| 1363 |
|
---|
| 1364 | switch (cmd) {
|
---|
| 1365 | case BIO_CTRL_DGRAM_QUERY_MTU:
|
---|
| 1366 | /*
|
---|
| 1367 | * Set to maximum (2^14) and ignore user input to enable transport
|
---|
| 1368 | * protocol fragmentation. Returns always 2^14.
|
---|
| 1369 | */
|
---|
| 1370 | data->mtu = 16384;
|
---|
| 1371 | ret = data->mtu;
|
---|
| 1372 | break;
|
---|
| 1373 | case BIO_CTRL_DGRAM_SET_MTU:
|
---|
| 1374 | /*
|
---|
| 1375 | * Set to maximum (2^14) and ignore input to enable transport
|
---|
| 1376 | * protocol fragmentation. Returns always 2^14.
|
---|
| 1377 | */
|
---|
| 1378 | data->mtu = 16384;
|
---|
| 1379 | ret = data->mtu;
|
---|
| 1380 | break;
|
---|
| 1381 | case BIO_CTRL_DGRAM_SET_CONNECTED:
|
---|
| 1382 | case BIO_CTRL_DGRAM_CONNECT:
|
---|
| 1383 | /* Returns always -1. */
|
---|
| 1384 | ret = -1;
|
---|
| 1385 | break;
|
---|
| 1386 | case BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT:
|
---|
| 1387 | /*
|
---|
| 1388 | * SCTP doesn't need the DTLS timer Returns always 1.
|
---|
| 1389 | */
|
---|
| 1390 | break;
|
---|
| 1391 | case BIO_CTRL_DGRAM_GET_MTU_OVERHEAD:
|
---|
| 1392 | /*
|
---|
| 1393 | * We allow transport protocol fragmentation so this is irrelevant
|
---|
| 1394 | */
|
---|
| 1395 | ret = 0;
|
---|
| 1396 | break;
|
---|
| 1397 | case BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE:
|
---|
| 1398 | if (num > 0)
|
---|
| 1399 | data->in_handshake = 1;
|
---|
| 1400 | else
|
---|
| 1401 | data->in_handshake = 0;
|
---|
| 1402 |
|
---|
| 1403 | ret =
|
---|
| 1404 | setsockopt(b->num, IPPROTO_SCTP, SCTP_NODELAY,
|
---|
| 1405 | &data->in_handshake, sizeof(int));
|
---|
| 1406 | break;
|
---|
| 1407 | case BIO_CTRL_DGRAM_SCTP_ADD_AUTH_KEY:
|
---|
| 1408 | /*
|
---|
| 1409 | * New shared key for SCTP AUTH. Returns 0 on success, -1 otherwise.
|
---|
| 1410 | */
|
---|
| 1411 |
|
---|
| 1412 | /* Get active key */
|
---|
| 1413 | sockopt_len = sizeof(struct sctp_authkeyid);
|
---|
| 1414 | ret =
|
---|
| 1415 | getsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY, &authkeyid,
|
---|
| 1416 | &sockopt_len);
|
---|
| 1417 | if (ret < 0)
|
---|
| 1418 | break;
|
---|
| 1419 |
|
---|
| 1420 | /* Add new key */
|
---|
| 1421 | sockopt_len = sizeof(struct sctp_authkey) + 64 * sizeof(uint8_t);
|
---|
| 1422 | authkey = OPENSSL_malloc(sockopt_len);
|
---|
| 1423 | if (authkey == NULL) {
|
---|
| 1424 | ret = -1;
|
---|
| 1425 | break;
|
---|
| 1426 | }
|
---|
| 1427 | memset(authkey, 0, sockopt_len);
|
---|
| 1428 | authkey->sca_keynumber = authkeyid.scact_keynumber + 1;
|
---|
| 1429 | # ifndef __FreeBSD__
|
---|
| 1430 | /*
|
---|
| 1431 | * This field is missing in FreeBSD 8.2 and earlier, and FreeBSD 8.3
|
---|
| 1432 | * and higher work without it.
|
---|
| 1433 | */
|
---|
| 1434 | authkey->sca_keylength = 64;
|
---|
| 1435 | # endif
|
---|
| 1436 | memcpy(&authkey->sca_key[0], ptr, 64 * sizeof(uint8_t));
|
---|
| 1437 |
|
---|
| 1438 | ret =
|
---|
| 1439 | setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_KEY, authkey,
|
---|
| 1440 | sockopt_len);
|
---|
| 1441 | OPENSSL_free(authkey);
|
---|
| 1442 | authkey = NULL;
|
---|
| 1443 | if (ret < 0)
|
---|
| 1444 | break;
|
---|
| 1445 |
|
---|
| 1446 | /* Reset active key */
|
---|
| 1447 | ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY,
|
---|
| 1448 | &authkeyid, sizeof(struct sctp_authkeyid));
|
---|
| 1449 | if (ret < 0)
|
---|
| 1450 | break;
|
---|
| 1451 |
|
---|
| 1452 | break;
|
---|
| 1453 | case BIO_CTRL_DGRAM_SCTP_NEXT_AUTH_KEY:
|
---|
| 1454 | /* Returns 0 on success, -1 otherwise. */
|
---|
| 1455 |
|
---|
| 1456 | /* Get active key */
|
---|
| 1457 | sockopt_len = sizeof(struct sctp_authkeyid);
|
---|
| 1458 | ret =
|
---|
| 1459 | getsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY, &authkeyid,
|
---|
| 1460 | &sockopt_len);
|
---|
| 1461 | if (ret < 0)
|
---|
| 1462 | break;
|
---|
| 1463 |
|
---|
| 1464 | /* Set active key */
|
---|
| 1465 | authkeyid.scact_keynumber = authkeyid.scact_keynumber + 1;
|
---|
| 1466 | ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY,
|
---|
| 1467 | &authkeyid, sizeof(struct sctp_authkeyid));
|
---|
| 1468 | if (ret < 0)
|
---|
| 1469 | break;
|
---|
| 1470 |
|
---|
| 1471 | /*
|
---|
| 1472 | * CCS has been sent, so remember that and fall through to check if
|
---|
| 1473 | * we need to deactivate an old key
|
---|
| 1474 | */
|
---|
| 1475 | data->ccs_sent = 1;
|
---|
| 1476 |
|
---|
| 1477 | case BIO_CTRL_DGRAM_SCTP_AUTH_CCS_RCVD:
|
---|
| 1478 | /* Returns 0 on success, -1 otherwise. */
|
---|
| 1479 |
|
---|
| 1480 | /*
|
---|
| 1481 | * Has this command really been called or is this just a
|
---|
| 1482 | * fall-through?
|
---|
| 1483 | */
|
---|
| 1484 | if (cmd == BIO_CTRL_DGRAM_SCTP_AUTH_CCS_RCVD)
|
---|
| 1485 | data->ccs_rcvd = 1;
|
---|
| 1486 |
|
---|
| 1487 | /*
|
---|
| 1488 | * CSS has been both, received and sent, so deactivate an old key
|
---|
| 1489 | */
|
---|
| 1490 | if (data->ccs_rcvd == 1 && data->ccs_sent == 1) {
|
---|
| 1491 | /* Get active key */
|
---|
| 1492 | sockopt_len = sizeof(struct sctp_authkeyid);
|
---|
| 1493 | ret =
|
---|
| 1494 | getsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY,
|
---|
| 1495 | &authkeyid, &sockopt_len);
|
---|
| 1496 | if (ret < 0)
|
---|
| 1497 | break;
|
---|
| 1498 |
|
---|
| 1499 | /*
|
---|
| 1500 | * Deactivate key or delete second last key if
|
---|
| 1501 | * SCTP_AUTHENTICATION_EVENT is not available.
|
---|
| 1502 | */
|
---|
| 1503 | authkeyid.scact_keynumber = authkeyid.scact_keynumber - 1;
|
---|
| 1504 | # ifdef SCTP_AUTH_DEACTIVATE_KEY
|
---|
| 1505 | sockopt_len = sizeof(struct sctp_authkeyid);
|
---|
| 1506 | ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_DEACTIVATE_KEY,
|
---|
| 1507 | &authkeyid, sockopt_len);
|
---|
| 1508 | if (ret < 0)
|
---|
| 1509 | break;
|
---|
| 1510 | # endif
|
---|
| 1511 | # ifndef SCTP_AUTHENTICATION_EVENT
|
---|
| 1512 | if (authkeyid.scact_keynumber > 0) {
|
---|
| 1513 | authkeyid.scact_keynumber = authkeyid.scact_keynumber - 1;
|
---|
| 1514 | ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_DELETE_KEY,
|
---|
| 1515 | &authkeyid, sizeof(struct sctp_authkeyid));
|
---|
| 1516 | if (ret < 0)
|
---|
| 1517 | break;
|
---|
| 1518 | }
|
---|
| 1519 | # endif
|
---|
| 1520 |
|
---|
| 1521 | data->ccs_rcvd = 0;
|
---|
| 1522 | data->ccs_sent = 0;
|
---|
| 1523 | }
|
---|
| 1524 | break;
|
---|
| 1525 | case BIO_CTRL_DGRAM_SCTP_GET_SNDINFO:
|
---|
| 1526 | /* Returns the size of the copied struct. */
|
---|
| 1527 | if (num > (long)sizeof(struct bio_dgram_sctp_sndinfo))
|
---|
| 1528 | num = sizeof(struct bio_dgram_sctp_sndinfo);
|
---|
| 1529 |
|
---|
| 1530 | memcpy(ptr, &(data->sndinfo), num);
|
---|
| 1531 | ret = num;
|
---|
| 1532 | break;
|
---|
| 1533 | case BIO_CTRL_DGRAM_SCTP_SET_SNDINFO:
|
---|
| 1534 | /* Returns the size of the copied struct. */
|
---|
| 1535 | if (num > (long)sizeof(struct bio_dgram_sctp_sndinfo))
|
---|
| 1536 | num = sizeof(struct bio_dgram_sctp_sndinfo);
|
---|
| 1537 |
|
---|
| 1538 | memcpy(&(data->sndinfo), ptr, num);
|
---|
| 1539 | break;
|
---|
| 1540 | case BIO_CTRL_DGRAM_SCTP_GET_RCVINFO:
|
---|
| 1541 | /* Returns the size of the copied struct. */
|
---|
| 1542 | if (num > (long)sizeof(struct bio_dgram_sctp_rcvinfo))
|
---|
| 1543 | num = sizeof(struct bio_dgram_sctp_rcvinfo);
|
---|
| 1544 |
|
---|
| 1545 | memcpy(ptr, &data->rcvinfo, num);
|
---|
| 1546 |
|
---|
| 1547 | ret = num;
|
---|
| 1548 | break;
|
---|
| 1549 | case BIO_CTRL_DGRAM_SCTP_SET_RCVINFO:
|
---|
| 1550 | /* Returns the size of the copied struct. */
|
---|
| 1551 | if (num > (long)sizeof(struct bio_dgram_sctp_rcvinfo))
|
---|
| 1552 | num = sizeof(struct bio_dgram_sctp_rcvinfo);
|
---|
| 1553 |
|
---|
| 1554 | memcpy(&(data->rcvinfo), ptr, num);
|
---|
| 1555 | break;
|
---|
| 1556 | case BIO_CTRL_DGRAM_SCTP_GET_PRINFO:
|
---|
| 1557 | /* Returns the size of the copied struct. */
|
---|
| 1558 | if (num > (long)sizeof(struct bio_dgram_sctp_prinfo))
|
---|
| 1559 | num = sizeof(struct bio_dgram_sctp_prinfo);
|
---|
| 1560 |
|
---|
| 1561 | memcpy(ptr, &(data->prinfo), num);
|
---|
| 1562 | ret = num;
|
---|
| 1563 | break;
|
---|
| 1564 | case BIO_CTRL_DGRAM_SCTP_SET_PRINFO:
|
---|
| 1565 | /* Returns the size of the copied struct. */
|
---|
| 1566 | if (num > (long)sizeof(struct bio_dgram_sctp_prinfo))
|
---|
| 1567 | num = sizeof(struct bio_dgram_sctp_prinfo);
|
---|
| 1568 |
|
---|
| 1569 | memcpy(&(data->prinfo), ptr, num);
|
---|
| 1570 | break;
|
---|
| 1571 | case BIO_CTRL_DGRAM_SCTP_SAVE_SHUTDOWN:
|
---|
| 1572 | /* Returns always 1. */
|
---|
| 1573 | if (num > 0)
|
---|
| 1574 | data->save_shutdown = 1;
|
---|
| 1575 | else
|
---|
| 1576 | data->save_shutdown = 0;
|
---|
| 1577 | break;
|
---|
| 1578 |
|
---|
| 1579 | default:
|
---|
| 1580 | /*
|
---|
| 1581 | * Pass to default ctrl function to process SCTP unspecific commands
|
---|
| 1582 | */
|
---|
| 1583 | ret = dgram_ctrl(b, cmd, num, ptr);
|
---|
| 1584 | break;
|
---|
| 1585 | }
|
---|
| 1586 | return (ret);
|
---|
| 1587 | }
|
---|
| 1588 |
|
---|
| 1589 | int BIO_dgram_sctp_notification_cb(BIO *b,
|
---|
| 1590 | void (*handle_notifications) (BIO *bio,
|
---|
| 1591 | void
|
---|
| 1592 | *context,
|
---|
| 1593 | void *buf),
|
---|
| 1594 | void *context)
|
---|
| 1595 | {
|
---|
| 1596 | bio_dgram_sctp_data *data = (bio_dgram_sctp_data *) b->ptr;
|
---|
| 1597 |
|
---|
| 1598 | if (handle_notifications != NULL) {
|
---|
| 1599 | data->handle_notifications = handle_notifications;
|
---|
| 1600 | data->notification_context = context;
|
---|
| 1601 | } else
|
---|
| 1602 | return -1;
|
---|
| 1603 |
|
---|
| 1604 | return 0;
|
---|
| 1605 | }
|
---|
| 1606 |
|
---|
| 1607 | /*
|
---|
| 1608 | * BIO_dgram_sctp_wait_for_dry - Wait for SCTP SENDER_DRY event
|
---|
| 1609 | * @b: The BIO to check for the dry event
|
---|
| 1610 | *
|
---|
| 1611 | * Wait until the peer confirms all packets have been received, and so that
|
---|
| 1612 | * our kernel doesn't have anything to send anymore. This is only received by
|
---|
| 1613 | * the peer's kernel, not the application.
|
---|
| 1614 | *
|
---|
| 1615 | * Returns:
|
---|
| 1616 | * -1 on error
|
---|
| 1617 | * 0 when not dry yet
|
---|
| 1618 | * 1 when dry
|
---|
| 1619 | */
|
---|
| 1620 | int BIO_dgram_sctp_wait_for_dry(BIO *b)
|
---|
| 1621 | {
|
---|
| 1622 | int is_dry = 0;
|
---|
| 1623 | int sockflags = 0;
|
---|
| 1624 | int n, ret;
|
---|
| 1625 | union sctp_notification snp;
|
---|
| 1626 | struct msghdr msg;
|
---|
| 1627 | struct iovec iov;
|
---|
| 1628 | # ifdef SCTP_EVENT
|
---|
| 1629 | struct sctp_event event;
|
---|
| 1630 | # else
|
---|
| 1631 | struct sctp_event_subscribe event;
|
---|
| 1632 | socklen_t eventsize;
|
---|
| 1633 | # endif
|
---|
| 1634 | bio_dgram_sctp_data *data = (bio_dgram_sctp_data *) b->ptr;
|
---|
| 1635 |
|
---|
| 1636 | /* set sender dry event */
|
---|
| 1637 | # ifdef SCTP_EVENT
|
---|
| 1638 | memset(&event, 0, sizeof(event));
|
---|
| 1639 | event.se_assoc_id = 0;
|
---|
| 1640 | event.se_type = SCTP_SENDER_DRY_EVENT;
|
---|
| 1641 | event.se_on = 1;
|
---|
| 1642 | ret =
|
---|
| 1643 | setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENT, &event,
|
---|
| 1644 | sizeof(struct sctp_event));
|
---|
| 1645 | # else
|
---|
| 1646 | eventsize = sizeof(struct sctp_event_subscribe);
|
---|
| 1647 | ret = getsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, &eventsize);
|
---|
| 1648 | if (ret < 0)
|
---|
| 1649 | return -1;
|
---|
| 1650 |
|
---|
| 1651 | event.sctp_sender_dry_event = 1;
|
---|
| 1652 |
|
---|
| 1653 | ret =
|
---|
| 1654 | setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event,
|
---|
| 1655 | sizeof(struct sctp_event_subscribe));
|
---|
| 1656 | # endif
|
---|
| 1657 | if (ret < 0)
|
---|
| 1658 | return -1;
|
---|
| 1659 |
|
---|
| 1660 | /* peek for notification */
|
---|
| 1661 | memset(&snp, 0, sizeof(snp));
|
---|
| 1662 | iov.iov_base = (char *)&snp;
|
---|
| 1663 | iov.iov_len = sizeof(union sctp_notification);
|
---|
| 1664 | msg.msg_name = NULL;
|
---|
| 1665 | msg.msg_namelen = 0;
|
---|
| 1666 | msg.msg_iov = &iov;
|
---|
| 1667 | msg.msg_iovlen = 1;
|
---|
| 1668 | msg.msg_control = NULL;
|
---|
| 1669 | msg.msg_controllen = 0;
|
---|
| 1670 | msg.msg_flags = 0;
|
---|
| 1671 |
|
---|
| 1672 | n = recvmsg(b->num, &msg, MSG_PEEK);
|
---|
| 1673 | if (n <= 0) {
|
---|
| 1674 | if ((n < 0) && (get_last_socket_error() != EAGAIN)
|
---|
| 1675 | && (get_last_socket_error() != EWOULDBLOCK))
|
---|
| 1676 | return -1;
|
---|
| 1677 | else
|
---|
| 1678 | return 0;
|
---|
| 1679 | }
|
---|
| 1680 |
|
---|
| 1681 | /* if we find a notification, process it and try again if necessary */
|
---|
| 1682 | while (msg.msg_flags & MSG_NOTIFICATION) {
|
---|
| 1683 | memset(&snp, 0, sizeof(snp));
|
---|
| 1684 | iov.iov_base = (char *)&snp;
|
---|
| 1685 | iov.iov_len = sizeof(union sctp_notification);
|
---|
| 1686 | msg.msg_name = NULL;
|
---|
| 1687 | msg.msg_namelen = 0;
|
---|
| 1688 | msg.msg_iov = &iov;
|
---|
| 1689 | msg.msg_iovlen = 1;
|
---|
| 1690 | msg.msg_control = NULL;
|
---|
| 1691 | msg.msg_controllen = 0;
|
---|
| 1692 | msg.msg_flags = 0;
|
---|
| 1693 |
|
---|
| 1694 | n = recvmsg(b->num, &msg, 0);
|
---|
| 1695 | if (n <= 0) {
|
---|
| 1696 | if ((n < 0) && (get_last_socket_error() != EAGAIN)
|
---|
| 1697 | && (get_last_socket_error() != EWOULDBLOCK))
|
---|
| 1698 | return -1;
|
---|
| 1699 | else
|
---|
| 1700 | return is_dry;
|
---|
| 1701 | }
|
---|
| 1702 |
|
---|
| 1703 | if (snp.sn_header.sn_type == SCTP_SENDER_DRY_EVENT) {
|
---|
| 1704 | is_dry = 1;
|
---|
| 1705 |
|
---|
| 1706 | /* disable sender dry event */
|
---|
| 1707 | # ifdef SCTP_EVENT
|
---|
| 1708 | memset(&event, 0, sizeof(event));
|
---|
| 1709 | event.se_assoc_id = 0;
|
---|
| 1710 | event.se_type = SCTP_SENDER_DRY_EVENT;
|
---|
| 1711 | event.se_on = 0;
|
---|
| 1712 | ret =
|
---|
| 1713 | setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENT, &event,
|
---|
| 1714 | sizeof(struct sctp_event));
|
---|
| 1715 | # else
|
---|
| 1716 | eventsize = (socklen_t) sizeof(struct sctp_event_subscribe);
|
---|
| 1717 | ret =
|
---|
| 1718 | getsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event,
|
---|
| 1719 | &eventsize);
|
---|
| 1720 | if (ret < 0)
|
---|
| 1721 | return -1;
|
---|
| 1722 |
|
---|
| 1723 | event.sctp_sender_dry_event = 0;
|
---|
| 1724 |
|
---|
| 1725 | ret =
|
---|
| 1726 | setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event,
|
---|
| 1727 | sizeof(struct sctp_event_subscribe));
|
---|
| 1728 | # endif
|
---|
| 1729 | if (ret < 0)
|
---|
| 1730 | return -1;
|
---|
| 1731 | }
|
---|
| 1732 | # ifdef SCTP_AUTHENTICATION_EVENT
|
---|
| 1733 | if (snp.sn_header.sn_type == SCTP_AUTHENTICATION_EVENT)
|
---|
| 1734 | dgram_sctp_handle_auth_free_key_event(b, &snp);
|
---|
| 1735 | # endif
|
---|
| 1736 |
|
---|
| 1737 | if (data->handle_notifications != NULL)
|
---|
| 1738 | data->handle_notifications(b, data->notification_context,
|
---|
| 1739 | (void *)&snp);
|
---|
| 1740 |
|
---|
| 1741 | /* found notification, peek again */
|
---|
| 1742 | memset(&snp, 0, sizeof(snp));
|
---|
| 1743 | iov.iov_base = (char *)&snp;
|
---|
| 1744 | iov.iov_len = sizeof(union sctp_notification);
|
---|
| 1745 | msg.msg_name = NULL;
|
---|
| 1746 | msg.msg_namelen = 0;
|
---|
| 1747 | msg.msg_iov = &iov;
|
---|
| 1748 | msg.msg_iovlen = 1;
|
---|
| 1749 | msg.msg_control = NULL;
|
---|
| 1750 | msg.msg_controllen = 0;
|
---|
| 1751 | msg.msg_flags = 0;
|
---|
| 1752 |
|
---|
| 1753 | /* if we have seen the dry already, don't wait */
|
---|
| 1754 | if (is_dry) {
|
---|
| 1755 | sockflags = fcntl(b->num, F_GETFL, 0);
|
---|
| 1756 | fcntl(b->num, F_SETFL, O_NONBLOCK);
|
---|
| 1757 | }
|
---|
| 1758 |
|
---|
| 1759 | n = recvmsg(b->num, &msg, MSG_PEEK);
|
---|
| 1760 |
|
---|
| 1761 | if (is_dry) {
|
---|
| 1762 | fcntl(b->num, F_SETFL, sockflags);
|
---|
| 1763 | }
|
---|
| 1764 |
|
---|
| 1765 | if (n <= 0) {
|
---|
| 1766 | if ((n < 0) && (get_last_socket_error() != EAGAIN)
|
---|
| 1767 | && (get_last_socket_error() != EWOULDBLOCK))
|
---|
| 1768 | return -1;
|
---|
| 1769 | else
|
---|
| 1770 | return is_dry;
|
---|
| 1771 | }
|
---|
| 1772 | }
|
---|
| 1773 |
|
---|
| 1774 | /* read anything else */
|
---|
| 1775 | return is_dry;
|
---|
| 1776 | }
|
---|
| 1777 |
|
---|
| 1778 | int BIO_dgram_sctp_msg_waiting(BIO *b)
|
---|
| 1779 | {
|
---|
| 1780 | int n, sockflags;
|
---|
| 1781 | union sctp_notification snp;
|
---|
| 1782 | struct msghdr msg;
|
---|
| 1783 | struct iovec iov;
|
---|
| 1784 | bio_dgram_sctp_data *data = (bio_dgram_sctp_data *) b->ptr;
|
---|
| 1785 |
|
---|
| 1786 | /* Check if there are any messages waiting to be read */
|
---|
| 1787 | do {
|
---|
| 1788 | memset(&snp, 0, sizeof(snp));
|
---|
| 1789 | iov.iov_base = (char *)&snp;
|
---|
| 1790 | iov.iov_len = sizeof(union sctp_notification);
|
---|
| 1791 | msg.msg_name = NULL;
|
---|
| 1792 | msg.msg_namelen = 0;
|
---|
| 1793 | msg.msg_iov = &iov;
|
---|
| 1794 | msg.msg_iovlen = 1;
|
---|
| 1795 | msg.msg_control = NULL;
|
---|
| 1796 | msg.msg_controllen = 0;
|
---|
| 1797 | msg.msg_flags = 0;
|
---|
| 1798 |
|
---|
| 1799 | sockflags = fcntl(b->num, F_GETFL, 0);
|
---|
| 1800 | fcntl(b->num, F_SETFL, O_NONBLOCK);
|
---|
| 1801 | n = recvmsg(b->num, &msg, MSG_PEEK);
|
---|
| 1802 | fcntl(b->num, F_SETFL, sockflags);
|
---|
| 1803 |
|
---|
| 1804 | /* if notification, process and try again */
|
---|
| 1805 | if (n > 0 && (msg.msg_flags & MSG_NOTIFICATION)) {
|
---|
| 1806 | # ifdef SCTP_AUTHENTICATION_EVENT
|
---|
| 1807 | if (snp.sn_header.sn_type == SCTP_AUTHENTICATION_EVENT)
|
---|
| 1808 | dgram_sctp_handle_auth_free_key_event(b, &snp);
|
---|
| 1809 | # endif
|
---|
| 1810 |
|
---|
| 1811 | memset(&snp, 0, sizeof(snp));
|
---|
| 1812 | iov.iov_base = (char *)&snp;
|
---|
| 1813 | iov.iov_len = sizeof(union sctp_notification);
|
---|
| 1814 | msg.msg_name = NULL;
|
---|
| 1815 | msg.msg_namelen = 0;
|
---|
| 1816 | msg.msg_iov = &iov;
|
---|
| 1817 | msg.msg_iovlen = 1;
|
---|
| 1818 | msg.msg_control = NULL;
|
---|
| 1819 | msg.msg_controllen = 0;
|
---|
| 1820 | msg.msg_flags = 0;
|
---|
| 1821 | n = recvmsg(b->num, &msg, 0);
|
---|
| 1822 |
|
---|
| 1823 | if (data->handle_notifications != NULL)
|
---|
| 1824 | data->handle_notifications(b, data->notification_context,
|
---|
| 1825 | (void *)&snp);
|
---|
| 1826 | }
|
---|
| 1827 |
|
---|
| 1828 | } while (n > 0 && (msg.msg_flags & MSG_NOTIFICATION));
|
---|
| 1829 |
|
---|
| 1830 | /* Return 1 if there is a message to be read, return 0 otherwise. */
|
---|
| 1831 | if (n > 0)
|
---|
| 1832 | return 1;
|
---|
| 1833 | else
|
---|
| 1834 | return 0;
|
---|
| 1835 | }
|
---|
| 1836 |
|
---|
| 1837 | static int dgram_sctp_puts(BIO *bp, const char *str)
|
---|
| 1838 | {
|
---|
| 1839 | int n, ret;
|
---|
| 1840 |
|
---|
| 1841 | n = strlen(str);
|
---|
| 1842 | ret = dgram_sctp_write(bp, str, n);
|
---|
| 1843 | return (ret);
|
---|
| 1844 | }
|
---|
| 1845 | # endif
|
---|
| 1846 |
|
---|
| 1847 | static int BIO_dgram_should_retry(int i)
|
---|
| 1848 | {
|
---|
| 1849 | int err;
|
---|
| 1850 |
|
---|
| 1851 | if ((i == 0) || (i == -1)) {
|
---|
| 1852 | err = get_last_socket_error();
|
---|
| 1853 |
|
---|
| 1854 | # if defined(OPENSSL_SYS_WINDOWS)
|
---|
| 1855 | /*
|
---|
| 1856 | * If the socket return value (i) is -1 and err is unexpectedly 0 at
|
---|
| 1857 | * this point, the error code was overwritten by another system call
|
---|
| 1858 | * before this error handling is called.
|
---|
| 1859 | */
|
---|
| 1860 | # endif
|
---|
| 1861 |
|
---|
| 1862 | return (BIO_dgram_non_fatal_error(err));
|
---|
| 1863 | }
|
---|
| 1864 | return (0);
|
---|
| 1865 | }
|
---|
| 1866 |
|
---|
| 1867 | int BIO_dgram_non_fatal_error(int err)
|
---|
| 1868 | {
|
---|
| 1869 | switch (err) {
|
---|
| 1870 | # if defined(OPENSSL_SYS_WINDOWS)
|
---|
| 1871 | # if defined(WSAEWOULDBLOCK)
|
---|
| 1872 | case WSAEWOULDBLOCK:
|
---|
| 1873 | # endif
|
---|
| 1874 | # endif
|
---|
| 1875 |
|
---|
| 1876 | # ifdef EWOULDBLOCK
|
---|
| 1877 | # ifdef WSAEWOULDBLOCK
|
---|
| 1878 | # if WSAEWOULDBLOCK != EWOULDBLOCK
|
---|
| 1879 | case EWOULDBLOCK:
|
---|
| 1880 | # endif
|
---|
| 1881 | # else
|
---|
| 1882 | case EWOULDBLOCK:
|
---|
| 1883 | # endif
|
---|
| 1884 | # endif
|
---|
| 1885 |
|
---|
| 1886 | # ifdef EINTR
|
---|
| 1887 | case EINTR:
|
---|
| 1888 | # endif
|
---|
| 1889 |
|
---|
| 1890 | # ifdef EAGAIN
|
---|
| 1891 | # if EWOULDBLOCK != EAGAIN
|
---|
| 1892 | case EAGAIN:
|
---|
| 1893 | # endif
|
---|
| 1894 | # endif
|
---|
| 1895 |
|
---|
| 1896 | # ifdef EPROTO
|
---|
| 1897 | case EPROTO:
|
---|
| 1898 | # endif
|
---|
| 1899 |
|
---|
| 1900 | # ifdef EINPROGRESS
|
---|
| 1901 | case EINPROGRESS:
|
---|
| 1902 | # endif
|
---|
| 1903 |
|
---|
| 1904 | # ifdef EALREADY
|
---|
| 1905 | case EALREADY:
|
---|
| 1906 | # endif
|
---|
| 1907 |
|
---|
| 1908 | return (1);
|
---|
| 1909 | /* break; */
|
---|
| 1910 | default:
|
---|
| 1911 | break;
|
---|
| 1912 | }
|
---|
| 1913 | return (0);
|
---|
| 1914 | }
|
---|
| 1915 |
|
---|
| 1916 | static void get_current_time(struct timeval *t)
|
---|
| 1917 | {
|
---|
| 1918 | # if defined(_WIN32)
|
---|
| 1919 | SYSTEMTIME st;
|
---|
| 1920 | union {
|
---|
| 1921 | unsigned __int64 ul;
|
---|
| 1922 | FILETIME ft;
|
---|
| 1923 | } now;
|
---|
| 1924 |
|
---|
| 1925 | GetSystemTime(&st);
|
---|
| 1926 | SystemTimeToFileTime(&st, &now.ft);
|
---|
| 1927 | # ifdef __MINGW32__
|
---|
| 1928 | now.ul -= 116444736000000000ULL;
|
---|
| 1929 | # else
|
---|
| 1930 | now.ul -= 116444736000000000UI64; /* re-bias to 1/1/1970 */
|
---|
| 1931 | # endif
|
---|
| 1932 | t->tv_sec = (long)(now.ul / 10000000);
|
---|
| 1933 | t->tv_usec = ((int)(now.ul % 10000000)) / 10;
|
---|
| 1934 | # elif defined(OPENSSL_SYS_VMS)
|
---|
| 1935 | struct timeb tb;
|
---|
| 1936 | ftime(&tb);
|
---|
| 1937 | t->tv_sec = (long)tb.time;
|
---|
| 1938 | t->tv_usec = (long)tb.millitm * 1000;
|
---|
| 1939 | # else
|
---|
| 1940 | gettimeofday(t, NULL);
|
---|
| 1941 | # endif
|
---|
| 1942 | }
|
---|
| 1943 |
|
---|
| 1944 | #endif
|
---|