Mercurial > hg > freeDiameter
annotate include/freeDiameter/freeDiameter.h @ 10:c5c99c73c2bf
Added some extensions and functions in the daemon
author | Sebastien Decugis <sdecugis@nict.go.jp> |
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date | Fri, 25 Sep 2009 16:12:08 +0900 |
parents | 3e143f047f78 |
children | 6576ef5e01eb |
rev | line source |
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0 | 1 /********************************************************************************************************* |
2 * Software License Agreement (BSD License) * | |
3 * Author: Sebastien Decugis <sdecugis@nict.go.jp> * | |
4 * * | |
5 * Copyright (c) 2009, WIDE Project and NICT * | |
6 * All rights reserved. * | |
7 * * | |
8 * Redistribution and use of this software in source and binary forms, with or without modification, are * | |
9 * permitted provided that the following conditions are met: * | |
10 * * | |
11 * * Redistributions of source code must retain the above * | |
12 * copyright notice, this list of conditions and the * | |
13 * following disclaimer. * | |
14 * * | |
15 * * Redistributions in binary form must reproduce the above * | |
16 * copyright notice, this list of conditions and the * | |
17 * following disclaimer in the documentation and/or other * | |
18 * materials provided with the distribution. * | |
19 * * | |
20 * * Neither the name of the WIDE Project or NICT nor the * | |
21 * names of its contributors may be used to endorse or * | |
22 * promote products derived from this software without * | |
23 * specific prior written permission of WIDE Project and * | |
24 * NICT. * | |
25 * * | |
26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED * | |
27 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * | |
28 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR * | |
29 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * | |
30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * | |
31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR * | |
32 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * | |
33 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * | |
34 *********************************************************************************************************/ | |
35 | |
36 #ifndef _FREEDIAMETER_H | |
37 #define _FREEDIAMETER_H | |
38 | |
39 | |
1
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40 #include <freeDiameter/libfreeDiameter.h> |
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42 | |
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43 /* Structure to hold the configuration of the freeDiameter daemon */ |
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44 struct fd_config { |
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45 int cnf_eyec; /* Eye catcher: EYEC_CONFIG */ |
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46 #define EYEC_CONFIG 0xC011F16 |
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47 |
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48 char *cnf_file; /* Configuration file to parse, default is DEFAULT_CONF_FILE */ |
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49 |
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50 char *cnf_diamid; /* Diameter Identity of the local peer (FQDN -- UTF-8) */ |
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51 size_t cnf_diamid_len; /* length of the previous string */ |
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52 char *cnf_diamrlm; /* Diameter realm of the local peer, default to realm part of diam_id */ |
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53 size_t cnf_diamrlm_len;/* length of the previous string */ |
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54 |
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55 unsigned int cnf_timer_tc; /* The value in seconds of the default Tc timer */ |
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56 unsigned int cnf_timer_tw; /* The value in seconds of the default Tw timer */ |
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57 |
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58 uint16_t cnf_port; /* the local port for legacy Diameter (default: 3868) in host byte order */ |
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59 uint16_t cnf_port_tls; /* the local port for Diameter/TLS (default: 3869) in host byte order */ |
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60 uint16_t cnf_sctp_str; /* default max number of streams for SCTP associations (def: 30) */ |
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61 struct fd_list cnf_endpoints; /* the local endpoints to bind the server to. list of struct fd_endpoint. default is empty (bind all) */ |
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62 struct fd_list cnf_apps; /* Applications locally supported (except relay, see flags). Use fd_disp_app_support to add one. list of struct fd_app. */ |
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63 struct { |
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64 unsigned no_fwd : 1; /* the peer does not relay messages (0xffffff app id) */ |
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65 unsigned no_ip4 : 1; /* disable IP */ |
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66 unsigned no_ip6 : 1; /* disable IPv6 */ |
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67 unsigned no_tcp : 1; /* disable use of TCP */ |
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68 unsigned no_sctp: 1; /* disable the use of SCTP */ |
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69 unsigned pr_tcp : 1; /* prefer TCP over SCTP */ |
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70 unsigned tls_alg: 1; /* TLS algorithm for initiated cnx. 0: separate port. 1: inband-security (old) */ |
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71 } cnf_flags; |
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72 |
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73 uint32_t cnf_orstateid; /* The value to use in Origin-State-Id, default to random value */ |
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74 struct dictionary *cnf_dict; /* pointer to the global dictionary */ |
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75 struct fifo *cnf_main_ev; /* events for the daemon's main (struct fd_event items) */ |
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76 }; |
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77 extern struct fd_config *fd_g_config; /* The pointer to access the global configuration, initalized in main */ |
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78 |
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79 /* Endpoints */ |
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80 struct fd_endpoint { |
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81 struct fd_list chain; /* link in cnf_endpoints list */ |
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82 sSS ss; /* the socket information. */ |
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83 }; |
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84 |
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85 /* Applications */ |
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86 struct fd_app { |
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87 struct fd_list chain; /* link in cnf_apps list. List ordered by appid. */ |
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88 struct { |
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89 unsigned auth : 1; |
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90 unsigned acct : 1; |
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91 unsigned common : 1; |
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92 } flags; |
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93 vendor_id_t vndid; /* if not 0, Vendor-Specific-App-Id AVP will be used */ |
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94 application_id_t appid; /* The identifier of the application */ |
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95 }; |
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96 |
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97 |
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98 /* Events */ |
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99 struct fd_event { |
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100 int code; /* codespace depends on the queue */ |
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101 void *data; |
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102 }; |
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103 |
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104 static __inline__ int fd_event_send(struct fifo *queue, int code, void * data) |
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105 { |
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106 struct fd_event * ev; |
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107 CHECK_MALLOC( ev = malloc(sizeof(struct fd_event)) ); |
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108 ev->code = code; |
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109 ev->data = data; |
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110 CHECK_FCT( fd_fifo_post(queue, &ev) ); |
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111 return 0; |
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112 } |
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113 static __inline__ int fd_event_get(struct fifo *queue, int *code, void ** data) |
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114 { |
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115 struct fd_event * ev; |
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116 CHECK_FCT( fd_fifo_get(queue, &ev) ); |
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117 if (code) |
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118 *code = ev->code; |
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119 if (data) |
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120 *data = ev->data; |
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121 free(ev); |
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122 return 0; |
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123 } |
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125 /* Events codespace for fd_g_config->cnf_main_ev */ |
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126 enum { |
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127 FDEV_TERMINATE = 1000, /* request to terminate */ |
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128 FDEV_DUMP_DICT, /* Dump the content of the dictionary */ |
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129 FDEV_DUMP_EXT, /* Dump state of extensions */ |
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130 FDEV_DUMP_QUEUES, /* Dump the message queues */ |
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131 FDEV_DUMP_CONFIG, /* Dump the configuration */ |
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132 FDEV_DUMP_PEERS /* Dump the list of peers */ |
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133 }; |
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134 |
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135 |
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136 |
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137 /***************************************/ |
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138 /* Peers information */ |
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139 /***************************************/ |
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140 |
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141 /* States of a peer */ |
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142 enum peer_state { |
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143 /* Stable states */ |
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144 STATE_DISABLED = 1, /* No connexion must be attempted / only this state means that the peer PSM thread is not running */ |
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145 STATE_OPEN, /* Connexion established */ |
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146 |
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147 /* Peer state machine */ |
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148 STATE_CLOSED, /* No connection established, will re-attempt after TcTimer. */ |
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149 STATE_CLOSING, /* the connection is being shutdown (DPR/DPA in progress) */ |
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150 STATE_WAITCNXACK, /* Attempting to establish transport-level connection */ |
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151 STATE_WAITCNXACK_ELEC, /* Received a CER from this same peer on an incoming connection (other peer object), while we were waiting for cnx ack */ |
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152 STATE_WAITCEA, /* Connection established, CER sent, waiting for CEA */ |
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153 /* STATE_WAITRETURNS_ELEC, */ /* This state is not stable and therefore deprecated: |
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154 We have sent a CER on our initiated connection, and received a CER from the remote peer on another connection. Election. |
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155 If we win the election, we must disconnect the initiated connection and send a CEA on the other => we go to OPEN state. |
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156 If we lose, we disconnect the other connection (receiver) and fallback to WAITCEA state. */ |
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157 |
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158 /* Failover state machine */ |
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159 STATE_SUSPECT, /* A DWR was sent and not answered within TwTime. Failover in progress. */ |
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160 STATE_REOPEN /* Connection has been re-established, waiting for 3 DWR/DWA exchanges before putting back to service */ |
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161 }; |
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162 extern char *peer_state_str[]; |
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163 |
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164 /* Information about a remote peer, used both for query and for creating a new entry */ |
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165 struct peer_info { |
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166 |
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167 /* This information is always there */ |
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168 char * pi_diamid; /* UTF-8, \0 terminated. The Diameter Identity of the remote peer */ |
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169 char * pi_realm; /* idem, its realm. */ |
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170 |
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171 /* Flags */ |
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172 struct { |
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173 #define PI_PROT_DEFAULT 0 /* Use the default algorithm configured for the host */ |
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174 #define PI_PROT_TCP 1 |
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175 #define PI_PROT_SCTP 2 |
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176 unsigned proto :2; |
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177 |
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178 #define PI_SEC_DEFAULT 0 /* The default behavior configured for the host */ |
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179 #define PI_SEC_NONE 1 /* Transparent security with this peer (IPsec) */ |
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180 #define PI_SEC_TLS_NEW 2 /* New TLS security (dedicated port protecting also CER/CEA) */ |
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181 #define PI_SEC_TLS_OLD 3 /* Old TLS security (inband on default port) */ |
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182 unsigned sec :2; |
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183 |
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184 #define PI_EXP_DEFAULT 0 |
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185 #define PI_EXP_NONE 1 /* the peer entry does not expire */ |
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186 #define PI_EXP_INACTIVE 2 /* the peer entry expires after pi_lft seconds without activity */ |
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187 #define PI_EXP_LIFETIME 3 /* the peer SA information is destroyed after lft seconds (example: DNS timeout) */ |
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188 unsigned exp :2; |
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189 |
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190 /* Following flags are read-only and received from remote peer */ |
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191 #define PI_INB_NONE 1 /* Remote peer advertised inband-sec-id 0 (None) */ |
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192 #define PI_INB_TLS 2 /* Remote peer advertised inband-sec-id 1 (TLS) */ |
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193 unsigned inband :2; /* This is only meaningful with pi_flags.sec == 3 */ |
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194 |
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195 unsigned relay :1; /* The remote peer advertized the relay application */ |
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196 } pi_flags; |
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197 |
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198 /* Additional parameters */ |
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199 uint32_t pi_lft; /* lifetime of entry without activity (except watchdogs) (see pi_flags.exp definition) */ |
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200 uint16_t pi_streams; /* number of streams for SCTP. 0 = default */ |
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201 uint16_t pi_port; /* port to connect to. 0: default. */ |
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202 int pi_tctimer; /* use this value for TcTimer instead of global, if != 0 */ |
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203 int pi_twtimer; /* use this value for TwTimer instead of global, if != 0 */ |
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204 |
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205 struct fd_list pi_endpoints; /* Endpoint(s) of the remote peer (discovered or advertized). list of struct fd_endpoint. DNS resolved if empty. */ |
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206 |
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207 /* The remaining information is read-only, not used for peer creation */ |
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208 enum peer_state pi_state; |
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209 uint32_t pi_vendorid; /* Content of the Vendor-Id AVP, or 0 by default */ |
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210 uint32_t pi_orstate; /* Origin-State-Id value */ |
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211 char * pi_prodname; /* copy of UTF-8 Product-Name AVP (\0 terminated) */ |
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212 uint32_t pi_firmrev; /* Content of the Firmware-Revision AVP */ |
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213 struct fd_list pi_apps; /* applications advertised by the remote peer, except relay (pi_flags.relay) */ |
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214 }; |
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215 |
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216 |
0 | 217 /***************************************/ |
218 /* Sending a message on the network */ | |
219 /***************************************/ | |
220 | |
221 /* | |
222 * FUNCTION: fd_msg_send | |
223 * | |
224 * PARAMETERS: | |
225 * pmsg : Location of the message to be sent on the network (set to NULL on function return to avoid double deletion). | |
226 * anscb : A callback to be called when answer is received, if msg is a request (optional) | |
227 * anscb_data : opaque data to be passed back to the anscb when it is called. | |
228 * | |
229 * DESCRIPTION: | |
230 * Sends a message on the network. (actually simply queues it in a global queue, to be picked by a daemon's thread) | |
231 * For requests, the end-to-end id must be set (see fd_msg_get_eteid / MSGFL_ALLOC_ETEID). | |
232 * For answers, the message must be created with function fd_msg_new_answ. | |
233 * | |
234 * The routing module will handle sending to the correct peer, usually based on the Destination-Realm / Destination-Host AVP. | |
235 * | |
236 * If the msg is a request, there are two ways of receiving the answer: | |
237 * - either having registered a callback in the dispatch module (see disp_register) | |
238 * - or provide a callback as parameter here. If such callback is provided, it is called before the dispatch callbacks. | |
239 * The prototype for this callback function is: | |
240 * void anscb(void * data, struct msg ** answer) | |
241 * where: | |
242 * data : opaque data that was registered along with the callback. | |
243 * answer : location of the pointer to the answer. | |
244 * note1: on function return, if *answer is not NULL, the message is passed to the dispatch module for regular callbacks. | |
245 * otherwise, the callback must take care of freeing the message (msg_free). | |
246 * note2: the opaque data is not freed by the daemon in any case, extensions should ensure clean handling in waaad_ext_fini. | |
247 * | |
248 * If no callback is registered to handle an answer, the message is discarded and an error is logged. | |
249 * | |
250 * RETURN VALUE: | |
251 * 0 : The message has been queued for sending (sending may fail asynchronously). | |
252 * EINVAL : A parameter is invalid (ex: anscb provided but message is not a request). | |
253 * ... | |
254 */ | |
255 int fd_msg_send ( struct msg ** pmsg, void (*anscb)(void *, struct msg **), void * data ); | |
256 | |
257 /* | |
258 * FUNCTION: fd_msg_rescode_set | |
259 * | |
260 * PARAMETERS: | |
261 * msg : A msg object -- it must be an answer. | |
262 * rescode : The name of the returned error code (ex: "DIAMETER_INVALID_AVP") | |
263 * errormsg : (optional) human-readable error message to put in Error-Message AVP | |
264 * optavp : (optional) If provided, the content will be put inside a Failed-AVP | |
265 * type_id : 0 => nothing; 1 => adds Origin-Host and Origin-Realm with local info. 2=> adds Error-Reporting-Host. | |
266 * | |
267 * DESCRIPTION: | |
268 * This function adds a Result-Code AVP to a message, and optionally | |
269 * - sets the 'E' error flag in the header, | |
270 * - adds Error-Message, Error-Reporting-Host and Failed-AVP AVPs. | |
271 * | |
272 * RETURN VALUE: | |
273 * 0 : Operation complete. | |
274 * !0 : an error occurred. | |
275 */ | |
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276 int fd_msg_rescode_set( struct msg * msg, char * rescode, char * errormsg, struct avp * optavp, int type_id ); |
0 | 277 |
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278 /* Add Origin-Host, Origin-Realm, (if osi) Origin-State-Id AVPS at the end of the message */ |
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279 int fd_msg_add_origin ( struct msg * msg, int osi ); |
0 | 280 |
281 | |
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282 |
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283 /***************************************/ |
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284 /* Dispatch module, daemon's part */ |
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285 /***************************************/ |
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286 |
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287 /* |
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288 * FUNCTION: fd_disp_app_support |
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289 * |
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290 * PARAMETERS: |
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291 * app : The dictionary object corresponding to the Application. |
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292 * vendor : (Optional) the dictionary object of a Vendor to claim support in Vendor-Specific-Application-Id |
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293 * auth : Support auth app part. |
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294 * acct : Support acct app part. |
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295 * |
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296 * DESCRIPTION: |
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297 * Registers an application to be advertized in CER/CEA exchanges. |
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298 * Messages with an application-id matching a registered value are passed to the dispatch module, |
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299 * while other messages are simply relayed or an error is returned (if local node does not relay) |
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300 * |
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301 * RETURN VALUE: |
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302 * 0 : The application support is registered. |
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303 * EINVAL : A parameter is invalid. |
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304 */ |
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305 int fd_disp_app_support ( struct dict_object * app, struct dict_object * vendor, int auth, int acct ); |
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306 |
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307 /* Note: if we want to support capabilities updates, we'll have to add possibility to remove an app as well... */ |
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308 |
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309 |
0 | 310 #endif /* _FREEDIAMETER_H */ |