Mercurial > hg > freeDiameter
annotate freeDiameter/cnxctx.c @ 23:db6c40b8b307
Added some code in cnxctx.c mainly
author | Sebastien Decugis <sdecugis@nict.go.jp> |
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date | Tue, 20 Oct 2009 17:30:20 +0900 |
parents | 0b3b46da2c12 |
children | bd83ce9328ed |
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1 /********************************************************************************************************* |
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2 * Software License Agreement (BSD License) * |
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3 * Author: Sebastien Decugis <sdecugis@nict.go.jp> * |
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4 * * |
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5 * Copyright (c) 2009, 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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35 |
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36 #include "fD.h" |
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37 |
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38 /* Connections contexts (cnxctx) in freeDiameter are wrappers around the sockets and TLS operations . |
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39 * They are used to hide the details of the processing to the higher layers of the daemon. |
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40 * They are always oriented on connections (TCP or SCTP), connectionless modes (UDP or SCTP) are not supported. |
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41 */ |
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42 |
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43 /* Note: this file could be moved to libfreeDiameter instead, but since it uses gnuTLS we prefer to keep it in the daemon */ |
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44 |
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45 /* Lifetime of a cnxctx object: |
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46 * 1) Creation |
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47 * a) a server socket: |
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48 * - create the object with fd_cnx_serv_tcp or fd_cnx_serv_sctp |
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49 * - start listening incoming connections: fd_cnx_serv_listen |
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50 * - accept new clients with fd_cnx_serv_accept. |
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51 * b) a client socket: |
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52 * - connect to a remote server with fd_cnx_cli_connect |
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53 * |
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54 * 2) Initialization |
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55 * - if TLS is started first, call fd_cnx_handshake |
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56 * - otherwise to receive clear messages, call fd_cnx_start_clear. fd_cnx_handshake can be called later. |
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57 * |
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58 * 3) Usage |
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59 * - fd_cnx_receive, fd_cnx_send : exchange messages on this connection (send is synchronous, receive is not). |
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60 * - fd_cnx_recv_setaltfifo : when a message is received, the event is sent to an external fifo list. fd_cnx_receive does not work when the alt_fifo is set. |
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61 * - fd_cnx_getid : retrieve a descriptive string for the connection (for debug) |
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62 * - fd_cnx_getremoteid : identification of the remote peer (IP address or fqdn) |
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63 * - fd_cnx_getcred : get the remote peer TLS credentials, after handshake |
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64 * - fd_cnx_getendpoints : get the endpoints (IP) of the connection |
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65 * |
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66 * 4) End |
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67 * - fd_cnx_destroy |
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68 */ |
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69 |
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70 /* The connection context structure */ |
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71 struct cnxctx { |
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72 char cc_id[60]; /* The name of this connection */ |
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73 char cc_remid[60]; /* Id of remote peer */ |
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74 |
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75 int cc_socket; /* The socket object of the connection -- <=0 if no socket is created */ |
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76 |
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77 int cc_proto; /* IPPROTO_TCP or IPPROTO_SCTP */ |
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78 int cc_tls; /* Is TLS already started ? */ |
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79 |
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80 struct fifo * cc_events; /* Events occuring on the connection */ |
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81 pthread_t cc_mgr; /* manager thread for the connection */ |
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82 struct fifo * cc_incoming; /* FIFO queue of messages received on the connection */ |
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83 struct fifo * cc_alt; /* alternate fifo to send FDEVP_CNX_MSG_RECV events to. */ |
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84 |
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85 /* If cc_proto == SCTP */ |
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86 struct { |
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87 int str_out;/* Out streams */ |
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88 int str_in; /* In streams */ |
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89 int pairs; /* max number of pairs ( = min(in, out)) */ |
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90 int next; /* # of stream the next message will be sent to */ |
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91 } cc_sctp_para; |
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92 |
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93 /* If cc_tls == true */ |
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94 struct { |
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95 int mode; /* GNUTLS_CLIENT / GNUTLS_SERVER */ |
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96 gnutls_session_t session; /* Session object (stream #0 in case of SCTP) */ |
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97 } cc_tls_para; |
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98 |
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99 /* If both conditions */ |
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100 struct { |
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101 gnutls_session_t *res_sessions; /* Sessions of other pairs of streams, resumed from the first */ |
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102 /* Buffers, threads, ... */ |
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103 } cc_sctp_tls_para; |
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104 }; |
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105 |
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106 |
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107 /* Initialize a context structure */ |
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108 static struct cnxctx * fd_cnx_init(int full) |
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109 { |
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110 struct cnxctx * conn = NULL; |
22
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111 |
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112 TRACE_ENTRY("%d", full); |
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113 |
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114 CHECK_MALLOC_DO( conn = malloc(sizeof(struct cnxctx)), return NULL ); |
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115 memset(conn, 0, sizeof(struct cnxctx)); |
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116 |
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117 if (full) { |
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118 CHECK_FCT_DO( fd_fifo_new ( &conn->cc_events ), return NULL ); |
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119 CHECK_FCT_DO( fd_fifo_new ( &conn->cc_incoming ), return NULL ); |
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120 } |
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121 |
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122 return conn; |
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123 } |
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124 |
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125 /* Create and bind a server socket to the given endpoint and port */ |
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126 struct cnxctx * fd_cnx_serv_tcp(uint16_t port, int family, struct fd_endpoint * ep) |
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127 { |
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128 struct cnxctx * cnx = NULL; |
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129 sSS dummy; |
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130 sSA * sa = (sSA *) &dummy; |
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131 |
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132 TRACE_ENTRY("%hu %d %p", port, family, ep); |
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133 |
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134 CHECK_PARAMS_DO( port, return NULL ); |
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135 CHECK_PARAMS_DO( ep || family, return NULL ); |
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136 CHECK_PARAMS_DO( (! family) || (family == AF_INET) || (family == AF_INET6), return NULL ); |
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137 CHECK_PARAMS_DO( (! ep) || (!family) || (ep->ss.ss_family == family), return NULL ); |
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138 |
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139 /* The connection object */ |
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140 CHECK_MALLOC_DO( cnx = fd_cnx_init(0), return NULL ); |
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141 |
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142 /* Prepare the socket address information */ |
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143 if (ep) { |
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144 memcpy(sa, &ep->ss, sizeof(sSS)); |
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145 } else { |
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146 memset(&dummy, 0, sizeof(dummy)); |
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147 sa->sa_family = family; |
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148 } |
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149 if (sa->sa_family == AF_INET) { |
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150 ((sSA4 *)sa)->sin_port = htons(port); |
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151 } else { |
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152 ((sSA6 *)sa)->sin6_port = htons(port); |
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153 } |
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154 |
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155 /* Create the socket */ |
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156 CHECK_FCT_DO( fd_tcp_create_bind_server( &cnx->cc_socket, sa, sizeof(sSS) ), goto error ); |
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157 |
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158 /* Generate the name for the connection object */ |
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159 { |
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160 char addrbuf[INET6_ADDRSTRLEN]; |
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161 int rc; |
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162 rc = getnameinfo(sa, sizeof(sSS), addrbuf, sizeof(addrbuf), NULL, 0, NI_NUMERICHOST); |
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163 if (rc) |
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164 snprintf(addrbuf, sizeof(addrbuf), "[err:%s]", gai_strerror(rc)); |
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165 snprintf(cnx->cc_id, sizeof(cnx->cc_id), "Srv TCP [%s]:%hu (%d)", addrbuf, port, cnx->cc_socket); |
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166 } |
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167 |
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168 cnx->cc_proto = IPPROTO_TCP; |
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169 |
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170 return cnx; |
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171 |
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172 error: |
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173 fd_cnx_destroy(cnx); |
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174 return NULL; |
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175 } |
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176 #ifndef DISABLE_SCTP |
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177 struct cnxctx * fd_cnx_serv_sctp(uint16_t port, struct fd_list * ep_list) |
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178 { |
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179 struct cnxctx * cnx = NULL; |
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180 sSS dummy; |
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181 sSA * sa = (sSA *) &dummy; |
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182 |
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183 TRACE_ENTRY("%hu %p", port, ep_list); |
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184 |
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185 CHECK_PARAMS_DO( port, return NULL ); |
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186 |
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187 /* The connection object */ |
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188 CHECK_MALLOC_DO( cnx = fd_cnx_init(0), return NULL ); |
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189 |
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190 /* Create the socket */ |
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191 CHECK_FCT_DO( fd_sctp_create_bind_server( &cnx->cc_socket, ep_list, port ), goto error ); |
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192 |
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193 /* Generate the name for the connection object */ |
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194 snprintf(cnx->cc_id, sizeof(cnx->cc_id), "Srv SCTP :%hu (%d)", port, cnx->cc_socket); |
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195 |
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196 cnx->cc_proto = IPPROTO_SCTP; |
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197 |
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198 return cnx; |
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199 |
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200 error: |
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201 fd_cnx_destroy(cnx); |
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202 return NULL; |
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203 } |
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204 #endif /* DISABLE_SCTP */ |
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205 |
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206 /* Allow clients to connect on the server socket */ |
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207 int fd_cnx_serv_listen(struct cnxctx * conn) |
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208 { |
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209 CHECK_PARAMS( conn ); |
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210 |
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211 switch (conn->cc_proto) { |
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212 case IPPROTO_TCP: |
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213 CHECK_FCT(fd_tcp_listen(conn->cc_socket)); |
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214 break; |
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215 |
23
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216 #ifndef DISABLE_SCTP |
22
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217 case IPPROTO_SCTP: |
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218 CHECK_FCT(fd_sctp_listen(conn->cc_socket)); |
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219 break; |
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220 #endif /* DISABLE_SCTP */ |
22
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221 |
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222 default: |
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223 CHECK_PARAMS(0); |
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224 } |
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225 |
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226 return 0; |
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227 } |
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228 |
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229 /* Accept a client (blocking until a new client connects) -- cancelable */ |
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230 struct cnxctx * fd_cnx_serv_accept(struct cnxctx * serv) |
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231 { |
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232 struct cnxctx * cli = NULL; |
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233 sSS ss; |
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234 socklen_t ss_len = sizeof(ss); |
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235 int cli_sock = 0; |
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236 struct fd_endpoint * ep; |
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237 |
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238 TRACE_ENTRY("%p", serv); |
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239 CHECK_PARAMS_DO(serv, return NULL); |
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240 |
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241 CHECK_SYS_DO( cli_sock = accept(serv->cc_socket, (sSA *)&ss, &ss_len), return NULL ); |
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242 |
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243 if (TRACE_BOOL(INFO)) { |
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244 fd_log_debug("%s - new client [", fd_cnx_getid(serv)); |
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245 sSA_DUMP_NODE( &ss, AI_NUMERICHOST ); |
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246 fd_log_debug("] connected.\n"); |
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247 } |
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248 |
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249 CHECK_MALLOC_DO( cli = fd_cnx_init(1), { shutdown(cli_sock, SHUT_RDWR); return NULL; } ); |
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250 cli->cc_socket = cli_sock; |
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251 cli->cc_proto = serv->cc_proto; |
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252 |
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253 /* Generate the name for the connection object */ |
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254 { |
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255 char addrbuf[INET6_ADDRSTRLEN]; |
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256 char portbuf[10]; |
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257 int rc; |
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258 |
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259 /* Numeric values for debug */ |
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260 rc = getnameinfo((sSA *)&ss, sizeof(sSS), addrbuf, sizeof(addrbuf), portbuf, sizeof(portbuf), NI_NUMERICHOST | NI_NUMERICSERV); |
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261 if (rc) |
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262 snprintf(addrbuf, sizeof(addrbuf), "[err:%s]", gai_strerror(rc)); |
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263 |
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264 snprintf(cli->cc_id, sizeof(cli->cc_id), "Client %s [%s]:%s (%d) / serv (%d)", |
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265 IPPROTO_NAME(cli->cc_proto), |
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266 addrbuf, portbuf, |
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267 cli->cc_socket, serv->cc_socket); |
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268 |
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269 /* Textual value for log messages */ |
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270 rc = getnameinfo((sSA *)&ss, sizeof(sSS), cli->cc_remid, sizeof(cli->cc_remid), NULL, 0, NI_NUMERICHOST); |
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271 if (rc) |
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272 snprintf(cli->cc_remid, sizeof(cli->cc_remid), "[err:%s]", gai_strerror(rc)); |
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273 } |
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274 |
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275 /* SCTP-specific handlings */ |
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276 #ifndef DISABLE_SCTP |
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277 if (cli->cc_proto == IPPROTO_SCTP) { |
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278 /* Retrieve the number of streams */ |
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279 CHECK_FCT_DO( fd_sctp_get_str_info( cli->cc_socket, &cli->cc_sctp_para.str_in, &cli->cc_sctp_para.str_out ), goto error ); |
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280 if (cli->cc_sctp_para.str_out > cli->cc_sctp_para.str_in) |
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281 cli->cc_sctp_para.pairs = cli->cc_sctp_para.str_out; |
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282 else |
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283 cli->cc_sctp_para.pairs = cli->cc_sctp_para.str_in; |
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284 } |
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285 #endif /* DISABLE_SCTP */ |
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286 |
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287 return cli; |
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288 error: |
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289 fd_cnx_destroy(cli); |
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290 return NULL; |
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291 } |
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292 |
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293 /* Client side: connect to a remote server */ |
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294 struct cnxctx * fd_cnx_cli_connect(int proto, const sSA * sa, socklen_t addrlen) |
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295 { |
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296 |
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297 TODO("..."); |
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298 return NULL; |
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299 } |
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300 |
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301 /* Return a string describing the connection, for debug */ |
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302 char * fd_cnx_getid(struct cnxctx * conn) |
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303 { |
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304 CHECK_PARAMS_DO( conn, return "" ); |
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305 return conn->cc_id; |
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306 } |
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307 |
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308 /* Start receving messages in clear (no TLS) on the connection */ |
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309 int fd_cnx_start_clear(struct cnxctx * conn) |
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310 { |
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311 |
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312 TODO("..."); |
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313 return ENOTSUP; |
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314 } |
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315 |
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316 /* TLS handshake a connection; no need to have called start_clear before. Reception is active if handhsake is successful */ |
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317 int fd_cnx_handshake(struct cnxctx * conn, int mode, char * priority) |
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318 { |
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319 TRACE_ENTRY( "%p %d", conn, mode); |
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320 CHECK_PARAMS( conn && ( (mode == GNUTLS_CLIENT) || (mode == GNUTLS_SERVER) ) ); |
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321 |
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322 /* Save the mode */ |
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323 conn->cc_tls_para.mode = mode; |
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324 |
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325 /* Create the master session context */ |
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326 CHECK_GNUTLS_DO( gnutls_init (&conn->cc_tls_para.session, mode), return ENOMEM ); |
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327 |
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328 /* Set the algorithm suite */ |
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329 TODO("Use overwrite priority if non NULL"); |
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330 CHECK_GNUTLS_DO( gnutls_priority_set( conn->cc_tls_para.session, fd_g_config->cnf_sec_data.prio_cache ), return EINVAL ); |
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331 |
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332 /* Set the credentials of this side of the connection */ |
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333 CHECK_GNUTLS_DO( gnutls_credentials_set (conn->cc_tls_para.session, GNUTLS_CRD_CERTIFICATE, fd_g_config->cnf_sec_data.credentials), return EINVAL ); |
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334 |
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335 /* Request the remote credentials as well */ |
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336 if (mode == GNUTLS_SERVER) { |
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337 gnutls_certificate_server_set_request (conn->cc_tls_para.session, GNUTLS_CERT_REQUIRE); |
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338 } |
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339 |
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340 /* Set the socket info in the session */ |
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341 gnutls_transport_set_ptr (conn->cc_tls_para.session, (gnutls_transport_ptr_t) conn->cc_socket); |
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342 |
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343 /* Special case: multi-stream TLS is not natively managed in GNU TLS, we use a wrapper library */ |
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344 if ((conn->cc_proto == IPPROTO_SCTP) && (conn->cc_sctp_para.pairs > 0)) { |
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345 #ifndef DISABLE_SCTP |
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346 TODO("Initialize the SCTP TLS wrapper"); |
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347 TODO("Set the lowat, push and pull functions"); |
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348 #else /* DISABLE_SCTP */ |
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349 ASSERT(0); |
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350 #endif /* DISABLE_SCTP */ |
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351 } |
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352 |
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353 /* Handshake master session */ |
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354 { |
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355 int ret; |
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356 CHECK_GNUTLS_DO( ret = gnutls_handshake(conn->cc_tls_para.session), |
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357 { |
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358 if (TRACE_BOOL(INFO)) { |
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359 fd_log_debug("TLS Handshake failed on socket %d (%s) : %s\n", conn->cc_socket, conn->cc_id, gnutls_strerror(ret)); |
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360 } |
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361 return EINVAL; |
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362 } ); |
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363 |
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364 /* Now verify the remote credentials are valid -- only simple test here */ |
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365 CHECK_GNUTLS_DO( gnutls_certificate_verify_peers2 (conn->cc_tls_para.session, &ret), return EINVAL ); |
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366 if (ret) { |
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367 if (TRACE_BOOL(INFO)) { |
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368 fd_log_debug("TLS: Remote certificate invalid on socket %d (%s) :\n", conn->cc_socket, conn->cc_id); |
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369 if (ret & GNUTLS_CERT_INVALID) |
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370 fd_log_debug(" - The certificate is not trusted (unknown CA?)\n"); |
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371 if (ret & GNUTLS_CERT_REVOKED) |
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372 fd_log_debug(" - The certificate has been revoked.\n"); |
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373 if (ret & GNUTLS_CERT_SIGNER_NOT_FOUND) |
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374 fd_log_debug(" - The certificate hasn't got a known issuer.\n"); |
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375 if (ret & GNUTLS_CERT_SIGNER_NOT_CA) |
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376 fd_log_debug(" - The certificate signer is not a CA, or uses version 1, or 3 without basic constraints.\n"); |
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377 if (ret & GNUTLS_CERT_INSECURE_ALGORITHM) |
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378 fd_log_debug(" - The certificate signature uses a weak algorithm.\n"); |
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379 } |
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380 return EINVAL; |
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381 } |
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382 } |
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383 |
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384 /* Other sessions in case of multi-stream SCTP are resumed from the master */ |
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385 if ((conn->cc_proto == IPPROTO_SCTP) && (conn->cc_sctp_para.pairs > 0)) { |
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386 #ifndef DISABLE_SCTP |
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387 TODO("Init and resume all additional sessions from the master one."); |
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388 #endif /* DISABLE_SCTP */ |
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389 } |
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390 |
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391 TODO("Start the connection state machine thread"); |
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392 |
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393 return 0; |
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394 } |
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395 |
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396 /* Retrieve TLS credentials of the remote peer, after handshake */ |
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397 int fd_cnx_getcred(struct cnxctx * conn, const gnutls_datum_t **cert_list, unsigned int *cert_list_size) |
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398 { |
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399 |
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400 TODO("..."); |
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401 return ENOTSUP; |
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402 } |
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403 |
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404 /* Get the list of endpoints (IP addresses) of the local and remote peers on this connection */ |
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405 int fd_cnx_getendpoints(struct cnxctx * conn, struct fd_list * local, struct fd_list * remote) |
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406 { |
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407 TRACE_ENTRY("%p %p %p", conn, local, remote); |
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408 CHECK_PARAMS(conn); |
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409 |
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410 if (local) { |
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411 /* Retrieve the local endpoint(s) of the connection */ |
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412 switch (conn->cc_proto) { |
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413 case IPPROTO_TCP: { |
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414 sSS ss; |
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415 socklen_t sl; |
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416 CHECK_FCT(fd_tcp_get_local_ep(conn->cc_socket, &ss, &sl)); |
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417 CHECK_FCT(fd_ep_add_merge( local, (sSA *)&ss, sl, 0, 0, 0, 1 )); |
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418 } |
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419 break; |
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420 |
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421 #ifndef DISABLE_SCTP |
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422 case IPPROTO_SCTP: { |
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423 CHECK_FCT(fd_sctp_get_local_ep(conn->cc_socket, local)); |
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424 } |
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425 break; |
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426 #endif /* DISABLE_SCTP */ |
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427 |
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428 default: |
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429 CHECK_PARAMS(0); |
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430 } |
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431 } |
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432 |
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433 if (remote) { |
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434 /* Check we have a full connection object, not a listening socket (with no remote) */ |
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435 CHECK_PARAMS( conn->cc_events ); |
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436 |
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437 /* Retrieve the peer endpoint(s) of the connection */ |
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438 switch (conn->cc_proto) { |
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439 case IPPROTO_TCP: { |
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440 sSS ss; |
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441 socklen_t sl; |
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442 CHECK_FCT(fd_tcp_get_remote_ep(conn->cc_socket, &ss, &sl)); |
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443 CHECK_FCT(fd_ep_add_merge( remote, (sSA *)&ss, sl, 0, 0, 0, 1 )); |
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444 } |
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445 break; |
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446 |
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447 #ifndef DISABLE_SCTP |
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448 case IPPROTO_SCTP: { |
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449 CHECK_FCT(fd_sctp_get_remote_ep(conn->cc_socket, remote)); |
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450 } |
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451 break; |
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452 #endif /* DISABLE_SCTP */ |
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453 |
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454 default: |
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455 CHECK_PARAMS(0); |
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456 } |
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457 } |
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458 |
23
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459 return 0; |
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460 } |
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461 |
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462 |
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463 /* Get a string describing the remote peer address (ip address or fqdn) */ |
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464 char * fd_cnx_getremoteid(struct cnxctx * conn) |
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465 { |
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466 CHECK_PARAMS_DO( conn, return "" ); |
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467 return conn->cc_remid; |
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468 } |
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469 |
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470 |
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471 /* Receive next message. if timeout is not NULL, wait only until timeout */ |
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472 int fd_cnx_receive(struct cnxctx * conn, struct timespec * timeout, unsigned char **buf, size_t * len) |
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473 { |
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474 |
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475 TODO("..."); |
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476 return ENOTSUP; |
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477 } |
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478 |
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479 /* Set / reset alternate FIFO list to send FDEVP_CNX_MSG_RECV to when message is received */ |
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480 int fd_cnx_recv_setaltfifo(struct cnxctx * conn, struct fifo * alt_fifo) |
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481 { |
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482 TRACE_ENTRY( "%p %p", conn, alt_fifo ); |
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483 CHECK_PARAMS( conn ); |
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484 |
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485 /* Let's cross fingers that there is no race condition here... */ |
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486 conn->cc_alt = alt_fifo; |
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487 |
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488 return 0; |
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489 } |
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490 |
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491 /* Send a message */ |
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492 int fd_cnx_send(struct cnxctx * conn, unsigned char * buf, size_t len) |
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493 { |
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494 |
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495 TODO("..."); |
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496 return ENOTSUP; |
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497 } |
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498 |
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499 |
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500 /* Destroy a conn structure, and shutdown the socket */ |
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501 void fd_cnx_destroy(struct cnxctx * conn) |
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502 { |
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503 TRACE_ENTRY("%p", conn); |
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504 |
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505 CHECK_PARAMS_DO(conn, return); |
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506 |
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507 TODO("End TLS session(s) if started"); |
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508 |
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509 TODO("Stop manager thread if running"); |
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510 |
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511 /* Shut the connection down */ |
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512 if (conn->cc_socket > 0) { |
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513 shutdown(conn->cc_socket, SHUT_RDWR); |
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514 } |
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515 |
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516 TODO("Empty FIFO queues"); |
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517 |
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518 /* Destroy FIFO lists */ |
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519 if (conn->cc_events) |
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520 CHECK_FCT_DO( fd_fifo_del ( &conn->cc_events ), /* continue */ ); |
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521 if (conn->cc_incoming) |
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522 CHECK_FCT_DO( fd_fifo_del ( &conn->cc_incoming ), /* continue */ ); |
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523 |
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524 /* Free the object */ |
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525 free(conn); |
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526 |
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527 /* Done! */ |
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528 return; |
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529 } |
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530 |
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531 |
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532 |
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533 |