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annotate libfdcore/cnxctx.h @ 1540:407e0a889c7e

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SCTP ConnectPeer: sctp_bindx() to local endpoints When connecting to an SCTP peer using sctp_connectx() with local addresses configured with ListenOn, bind to the ListenOn addresses using sctp_bindx() so that the SCTP INIT only contains the configured local addresses, matching what is advertised in the CER, and disable SCTP_AUTO_ASCONF. If no local addresses are configured with ListenOn, the previous behaviour of sctp_connectx() and enable SCTP_AUTO_ASCONF is used.
author Luke Mewburn <luke@mewburn.net>
date Fri, 01 May 2020 18:20:33 +1000
parents 3ac2877628a5
children 566bb46cc73f
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1 /*********************************************************************************************************
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2 * Software License Agreement (BSD License) *
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3 * Author: Sebastien Decugis <sdecugis@freediameter.net> *
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4 * *
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5 * Copyright (c) 2013, WIDE Project and NICT *
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6 * All rights reserved. *
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7 * *
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8 * Redistribution and use of this software in source and binary forms, with or without modification, are *
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9 * permitted provided that the following conditions are met: *
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10 * *
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11 * * Redistributions of source code must retain the above *
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12 * copyright notice, this list of conditions and the *
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13 * following disclaimer. *
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14 * *
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15 * * Redistributions in binary form must reproduce the above *
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16 * copyright notice, this list of conditions and the *
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17 * following disclaimer in the documentation and/or other *
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18 * materials provided with the distribution. *
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19 * *
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20 * * Neither the name of the WIDE Project or NICT nor the *
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21 * names of its contributors may be used to endorse or *
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22 * promote products derived from this software without *
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23 * specific prior written permission of WIDE Project and *
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24 * NICT. *
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25 * *
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26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED *
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27 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
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28 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR *
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29 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT *
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30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS *
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31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR *
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32 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF *
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33 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
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34 *********************************************************************************************************/
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36 /* This file contains the definitions for internal use in the connection context files */
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38 #ifndef _CNXCTX_H
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39 #define _CNXCTX_H
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41 /* Maximum time we allow a connection to be blocked because of head-of-the-line buffers. After this delay, connection is considered in error. */
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42 #define MAX_HOTL_BLOCKING_TIME 1000 /* ms */
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44 /* The connection context structure */
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45 struct cnxctx {
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46 char cc_id[100]; /* The name of this connection. the first 5 chars are reserved for flags display (cc_state). */
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47 char cc_remid[60]; /* Id of remote peer */
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48
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49 int cc_socket; /* The socket object of the connection -- <=0 if no socket is created */
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51 int cc_family; /* AF_INET or AF_INET6 (mixed) */
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52 int cc_proto; /* IPPROTO_TCP or IPPROTO_SCTP */
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54 uint32_t cc_state; /* True if the object is being destroyed: we don't send events anymore. access with fd_cnx_getstate() */
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55 #define CC_STATUS_CLOSING 1
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56 #define CC_STATUS_ERROR 2
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57 #define CC_STATUS_SIGNALED 4
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58 #define CC_STATUS_TLS 8
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60 pthread_t cc_rcvthr; /* thread for receiving messages on the connection */
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61 int cc_loop; /* tell the thread if it loops or stops after the first message is received */
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63 struct fifo * cc_incoming; /* FIFO queue of events received on the connection, FDEVP_CNX_* */
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64 struct fifo * cc_alt; /* alternate fifo to send FDEVP_CNX_* events to. */
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66 /* If cc_tls == true */
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67 struct {
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68 DiamId_t cn; /* If not NULL, remote certif will be checked to match this Common Name */
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69 int mode; /* GNUTLS_CLIENT / GNUTLS_SERVER */
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70 int algo; /* ALGO_HANDSHAKE_DEFAULT / ALGO_HANDSHAKE_3436 */
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71 gnutls_session_t session; /* Session object (stream #0 in case of SCTP) */
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72 } cc_tls_para;
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73
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74 /* If cc_proto == SCTP */
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75 struct {
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76 uint16_t str_out; /* Out streams */
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77 uint16_t str_in; /* In streams */
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78 uint16_t pairs; /* max number of pairs ( = min(in, out)) */
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79 uint16_t next; /* # of stream the next message will be sent to */
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80 int unordered; /* boolean telling if use of streams > 0 is permitted */
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81 } cc_sctp_para;
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82
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83 /* If both conditions */
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84 struct {
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85 struct sctp3436_ctx *array; /* an array of cc_sctp_para.pairs elements -- the #0 is special (session is outside)*/
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86 struct sr_store *sess_store; /* Session data of the master session, to resume the children sessions */
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87 } cc_sctp3436_data;
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88 };
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90 void fd_cnx_markerror(struct cnxctx * conn);
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91 uint32_t fd_cnx_getstate(struct cnxctx * conn);
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92 int fd_cnx_teststate(struct cnxctx * conn, uint32_t flag);
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93 void fd_cnx_addstate(struct cnxctx * conn, uint32_t orstate);
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94 void fd_cnx_setstate(struct cnxctx * conn, uint32_t abstate);
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95 struct fifo * fd_cnx_target_queue(struct cnxctx * conn);
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98 /* Socket */
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99 ssize_t fd_cnx_s_recv(struct cnxctx * conn, void *buffer, size_t length);
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100 void fd_cnx_s_setto(int sock);
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101
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102 /* TLS */
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103 int fd_tls_rcvthr_core(struct cnxctx * conn, gnutls_session_t session);
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104 int fd_tls_prepare(gnutls_session_t * session, int mode, int dtls, char * priority, void * alt_creds);
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105 #ifndef GNUTLS_VERSION_300
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106 int fd_tls_verify_credentials(gnutls_session_t session, struct cnxctx * conn, int verbose);
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107 #endif /* GNUTLS_VERSION_300 */
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108
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109 /* TCP */
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110 int fd_tcp_create_bind_server( int * sock, sSA * sa, socklen_t salen );
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111 int fd_tcp_listen( int sock );
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112 int fd_tcp_client( int *sock, sSA * sa, socklen_t salen );
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113 int fd_tcp_get_local_ep(int sock, sSS * ss, socklen_t *sl);
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114 int fd_tcp_get_remote_ep(int sock, sSS * ss, socklen_t *sl);
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115
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116 #ifndef DISABLE_SCTP
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117 /* SCTP */
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118 int fd_sctp_create_bind_server( int * sock, int family, struct fd_list * list, uint16_t port );
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119 int fd_sctp_listen( int sock );
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120 int fd_sctp_client( int *sock, int no_ip6, uint16_t port, struct fd_list * list, struct fd_list * src_list );
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121 int fd_sctp_get_local_ep(int sock, struct fd_list * list);
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122 int fd_sctp_get_remote_ep(int sock, struct fd_list * list);
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123 int fd_sctp_get_str_info( int sock, uint16_t *in, uint16_t *out, sSS *primary );
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124 ssize_t fd_sctp_sendstrv(struct cnxctx * conn, uint16_t strid, const struct iovec *iov, int iovcnt);
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125 int fd_sctp_recvmeta(struct cnxctx * conn, uint16_t * strid, uint8_t ** buf, size_t * len, int *event);
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126
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127 /* TLS over SCTP (multi-stream) */
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128 struct sctp3436_ctx {
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129 struct cnxctx *parent; /* for info such as socket, conn name, event list */
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130 uint16_t strid; /* Stream # of this session */
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131 struct fifo *raw_recv; /* Raw data received on this stream, for demux */
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132 struct {
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133 uint8_t *buf;
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134 size_t bufsz;
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135 size_t offset;
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136 } partial; /* If the pull function did not read the full content of first message in raw, it stores it here for next read call. */
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137 pthread_t thr; /* Thread to decrypt raw data in this pair of streams */
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138 gnutls_session_t session; /* TLS context using this pair of streams -- except if strid == 0, in that case session is outside the array */
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139 };
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140
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141 int fd_sctp3436_init(struct cnxctx * conn);
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142 int fd_sctp3436_handshake_others(struct cnxctx * conn, char * priority, void * alt_creds);
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143 int fd_sctp3436_startthreads(struct cnxctx * conn, int others);
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144 void fd_sctp3436_bye(struct cnxctx * conn);
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145 void fd_sctp3436_waitthreadsterm(struct cnxctx * conn);
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146 void fd_sctp3436_gnutls_deinit_others(struct cnxctx * conn);
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147 void fd_sctp3436_stopthreads(struct cnxctx * conn);
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148 void fd_sctp3436_destroy(struct cnxctx * conn);
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149
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150 #endif /* DISABLE_SCTP */
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151
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152 #endif /* _CNXCTX_H */
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153
"Welcome to our mercurial repository"