Mercurial > hg > freeDiameter
annotate include/freeDiameter/libfdcore.h @ 1098:f38d77f9cfd3
Initial implementation of the hook mechanism
| author | Sebastien Decugis <sdecugis@freediameter.net> |
|---|---|
| date | Thu, 09 May 2013 11:59:34 +0800 |
| parents | 1d1a20a0779d |
| children | 40b48a3997a2 |
| rev | line source |
|---|---|
| 0 | 1 /********************************************************************************************************* |
| 2 * Software License Agreement (BSD License) * | |
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3 * Author: Sebastien Decugis <sdecugis@freediameter.net> * |
| 0 | 4 * * |
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5 * Copyright (c) 2012, WIDE Project and NICT * |
| 0 | 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 | |
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36 #ifndef _LIBFDCORE_H |
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37 #define _LIBFDCORE_H |
| 0 | 38 |
| 39 | |
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40 #ifdef __cplusplus |
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41 extern "C" { |
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42 #endif |
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43 |
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44 #include <freeDiameter/libfdproto.h> |
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45 #include <gnutls/gnutls.h> |
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46 #include <gnutls/x509.h> |
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47 |
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48 /* GNUTLS version */ |
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49 #ifndef GNUTLS_VERSION |
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50 #define GNUTLS_VERSION LIBGNUTLS_VERSION |
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51 #endif /* GNUTLS_VERSION */ |
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52 |
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53 /* GNUTLS calls debug level */ |
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54 #ifndef GNUTLS_DBG_LEVEL |
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55 #define GNUTLS_DBG_LEVEL ANNOYING |
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56 #endif /* GNUTLS_DBG_LEVEL */ |
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57 |
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58 |
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59 /* Check the return value of a GNUTLS function, log and propagate */ |
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60 #define CHECK_GNUTLS_GEN( faillevel, __call__, __fallback__ ) { \ |
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61 CHECK_PRELUDE(__call__); \ |
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62 if (__ret__ < 0) { \ |
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63 __ret__ = errno; \ |
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64 LOG(faillevel, "ERROR: in '%s' :\t%s", #__call__ , gnutls_strerror(__ret__)); \ |
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65 __fallback__; \ |
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66 } \ |
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67 } |
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69 /* we use this macro to help debugging gnutls usage issues -- just change the content to display what you need */ |
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70 #define GNUTLS_TRACE( __call__) { \ |
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71 TRACE_CALL("Check: %s", #__call__ ); \ |
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72 (__call__); \ |
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73 } |
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74 |
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75 |
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76 #ifndef EXCLUDE_DEPRECATED |
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77 /* Macro for transition, replace with CHECK_GNUTLS_GEN */ |
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78 #define CHECK_GNUTLS_DO( __call__, __fallback__ ) { \ |
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79 CHECK_PRELUDE(__call__); \ |
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80 if (__ret__ < 0) { \ |
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81 __ret__ = errno; \ |
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82 TRACE_ERROR("ERROR: in '%s' :\t%s", #__call__ , gnutls_strerror(__ret__)); \ |
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83 __fallback__; \ |
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84 } \ |
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85 } |
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86 |
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87 #endif /* EXCLUDE_DEPRECATED */ |
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88 |
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89 |
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90 /*============================================================*/ |
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91 /* INITIALIZATION */ |
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92 /*============================================================*/ |
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93 |
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94 |
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95 /* Initialize the libfdcore internals. This also initializes libfdproto */ |
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96 int fd_core_initialize(void); |
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97 |
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98 /* Return a string describing the version of the library */ |
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99 const char *fd_core_version(void); |
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100 |
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101 /* Parse the freeDiameter.conf configuration file, load the extensions */ |
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102 int fd_core_parseconf(const char * conffile); |
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103 |
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104 /* Start the server & client threads */ |
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105 int fd_core_start(void); |
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106 |
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107 /* Block until the framework has completed its initialization -- useful for extensions */ |
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108 int fd_core_waitstartcomplete(void); |
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109 |
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110 /* Initialize shutdown of the framework */ |
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111 int fd_core_shutdown(void); |
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112 |
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113 /* Wait for the shutdown to be complete -- this should always be called after fd_core_shutdown */ |
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114 int fd_core_wait_shutdown_complete(void); |
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115 |
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116 |
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117 /*============================================================*/ |
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118 /* CONFIG */ |
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119 /*============================================================*/ |
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120 |
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121 /* Structure to hold the configuration of the freeDiameter daemon */ |
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122 #define EYEC_CONFIG 0xC011F16 |
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123 struct fd_config { |
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124 int cnf_eyec; /* Eye catcher: EYEC_CONFIG */ |
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125 |
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126 const char *cnf_file; /* Configuration file to parse, default is DEFAULT_CONF_FILE */ |
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127 |
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128 DiamId_t cnf_diamid; /* Diameter Identity of the local peer (FQDN -- ASCII) */ |
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129 size_t cnf_diamid_len;/* cached length of the previous string */ |
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130 DiamId_t cnf_diamrlm; /* Diameter realm of the local peer, default to realm part of cnf_diamid */ |
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131 size_t cnf_diamrlm_len;/* length of the previous string */ |
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132 |
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133 unsigned int cnf_timer_tc; /* The value in seconds of the default Tc timer */ |
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134 unsigned int cnf_timer_tw; /* The value in seconds of the default Tw timer */ |
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135 |
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136 uint16_t cnf_port; /* the local port for legacy Diameter (default: 3868) in host byte order */ |
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137 uint16_t cnf_port_tls; /* the local port for Diameter/TLS (default: 3869) in host byte order */ |
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138 uint16_t cnf_sctp_str; /* default max number of streams for SCTP associations (def: 30) */ |
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139 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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140 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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141 uint16_t cnf_dispthr; /* Number of dispatch threads to create */ |
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142 struct { |
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143 unsigned no_fwd : 1; /* the peer does not relay messages (0xffffff app id) */ |
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144 unsigned no_ip4 : 1; /* disable IP */ |
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145 unsigned no_ip6 : 1; /* disable IPv6 */ |
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146 unsigned no_tcp : 1; /* disable use of TCP */ |
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147 unsigned no_sctp: 1; /* disable the use of SCTP */ |
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148 unsigned pr_tcp : 1; /* prefer TCP over SCTP */ |
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149 unsigned tls_alg: 1; /* TLS algorithm for initiated cnx. 0: separate port. 1: inband-security (old) */ |
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150 } cnf_flags; |
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151 |
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152 struct { |
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153 /* Credentials parameters (backup) */ |
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154 char * cert_file; |
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155 char * key_file; |
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156 |
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157 char * ca_file; |
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158 int ca_file_nr; |
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159 char * crl_file; |
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160 |
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161 char * prio_string; |
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162 unsigned int dh_bits; |
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163 char * dh_file; |
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164 |
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165 /* GNUTLS parameters */ |
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166 gnutls_priority_t prio_cache; |
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167 gnutls_dh_params_t dh_cache; |
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168 |
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169 /* GNUTLS server credential(s) */ |
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170 gnutls_certificate_credentials_t credentials; /* contains local cert + trust anchors */ |
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171 #ifdef GNUTLS_VERSION_300 |
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172 gnutls_x509_trust_list_t trustlist; /* the logic to check local certificate has changed */ |
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173 #endif /* GNUTLS_VERSION_300 */ |
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174 |
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175 } cnf_sec_data; |
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176 |
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177 uint32_t cnf_orstateid; /* The value to use in Origin-State-Id, default to random value */ |
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178 struct dictionary *cnf_dict; /* pointer to the global dictionary */ |
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179 struct fifo *cnf_main_ev; /* events for the daemon's main (struct fd_event items) */ |
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180 }; |
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181 extern struct fd_config *fd_g_config; /* The pointer to access the global configuration, initalized in main */ |
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182 |
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183 |
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184 |
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185 /*============================================================*/ |
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186 /* PEERS */ |
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187 /*============================================================*/ |
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188 |
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189 /* States of a peer */ |
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190 enum peer_state { |
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191 /* Stable states */ |
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192 STATE_NEW = 0, /* The peer has been just been created, PSM thread not started yet */ |
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193 STATE_OPEN, /* Connexion established */ |
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194 |
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195 /* Peer state machine */ |
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196 STATE_CLOSED, /* No connection established, will re-attempt after TcTimer. */ |
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197 STATE_CLOSING, /* the connection is being shutdown (DPR/DPA in progress) */ |
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198 STATE_WAITCNXACK, /* Attempting to establish transport-level connection */ |
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199 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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200 STATE_WAITCEA, /* Connection established, CER sent, waiting for CEA */ |
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201 /* STATE_WAITRETURNS_ELEC, */ /* This state is not stable and therefore deprecated: |
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202 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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203 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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204 If we lose, we disconnect the other connection (receiver) and fallback to WAITCEA state. */ |
| 42 | 205 STATE_OPEN_HANDSHAKE, /* TLS Handshake and validation are in progress in open state -- we use it only for debug purpose, it is never displayed */ |
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206 |
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207 /* Failover state machine */ |
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208 STATE_SUSPECT, /* A DWR was sent and not answered within TwTime. Failover in progress. */ |
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209 STATE_REOPEN, /* Connection has been re-established, waiting for 3 DWR/DWA exchanges before putting back to service */ |
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210 |
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211 /* Ordering issues with multistream & state machine. -- see top of p_psm.c for explanation */ |
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212 STATE_OPEN_NEW, /* after CEA is sent, until a new message is received. Force ordering in this state */ |
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213 STATE_CLOSING_GRACE, /* after DPA is sent or received, give a short delay for messages in the pipe to be received. */ |
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214 |
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215 /* Error state */ |
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216 STATE_ZOMBIE /* The PSM thread is not running anymore; it must be re-started or peer should be deleted. */ |
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217 #define STATE_MAX STATE_ZOMBIE |
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218 }; |
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219 /* The following macro is called in freeDiameter/p_psm.c */ |
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220 #define DECLARE_STATE_STR() \ |
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221 const char *peer_state_str[] = { \ |
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222 "STATE_NEW" \ |
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223 , "STATE_OPEN" \ |
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224 , "STATE_CLOSED" \ |
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225 , "STATE_CLOSING" \ |
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226 , "STATE_WAITCNXACK" \ |
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227 , "STATE_WAITCNXACK_ELEC" \ |
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228 , "STATE_WAITCEA" \ |
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229 , "STATE_OPEN_HANDSHAKE" \ |
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230 , "STATE_SUSPECT" \ |
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231 , "STATE_REOPEN" \ |
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232 , "STATE_OPEN_NEW" \ |
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233 , "STATE_CLOSING_GRACE" \ |
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234 , "STATE_ZOMBIE" \ |
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235 }; |
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236 extern const char *peer_state_str[]; |
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237 #define STATE_STR(state) \ |
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238 (((unsigned)(state)) <= STATE_MAX ? peer_state_str[((unsigned)(state)) ] : "<Invalid>") |
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239 |
| 972 | 240 /* Constants for the peer_info structure below */ |
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241 #define PI_P3_DEFAULT 0 /* Use any available protocol */ |
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242 #define PI_P3_IP 1 /* Use only IP to connect to this peer */ |
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243 #define PI_P3_IPv6 2 /* resp, IPv6 */ |
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244 |
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245 #define PI_P4_DEFAULT 0 /* Attempt any available protocol */ |
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246 #define PI_P4_TCP 1 /* Only use TCP */ |
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247 #define PI_P4_SCTP 2 /* Only use SCTP */ |
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248 |
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249 #define PI_ALGPREF_SCTP 0 /* SCTP is attempted first (default) */ |
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250 #define PI_ALGPREF_TCP 1 /* TCP is attempted first */ |
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251 |
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252 #define PI_SEC_DEFAULT 0 /* New TLS security (handshake after connection, protecting also CER/CEA) */ |
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253 #define PI_SEC_NONE 1 /* Transparent security with this peer (IPsec) */ |
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254 #define PI_SEC_TLS_OLD 2 /* Old TLS security (use Inband-Security-Id AVP during CER/CEA) */ |
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255 /* Set sec = 3 to authorize use of (Inband-Security-Id == NONE) with this peer, sec = 2 only authorizing TLS */ |
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256 |
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257 #define PI_EXP_NONE 0 /* the peer entry does not expire */ |
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258 #define PI_EXP_INACTIVE 1 /* the peer entry expires (i.e. is deleted) after pi_lft seconds without activity */ |
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259 |
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260 #define PI_PRST_NONE 0 /* the peer entry is deleted after disconnection / error */ |
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261 #define PI_PRST_ALWAYS 1 /* the peer entry is persistant (will be kept as ZOMBIE in case of error) */ |
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262 |
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263 /* Information about a remote peer */ |
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264 struct peer_info { |
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265 |
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266 DiamId_t pi_diamid; /* (supposedly) UTF-8, \0 terminated. The Diameter Identity of the remote peer. */ |
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267 size_t pi_diamidlen; /* cached length of pi_diamid */ |
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268 |
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269 struct { |
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270 struct { |
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271 unsigned pro3 :2; /* PI_P3_* */ |
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272 unsigned pro4 :2; /* PI_P4_* */ |
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273 unsigned alg :1; /* PI_ALGPREF_* */ |
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274 unsigned sec :2; /* PI_SEC_* */ |
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275 unsigned exp :1; /* PI_EXP_* */ |
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276 unsigned persist :1; /* PI_PRST_* */ |
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277 |
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278 } pic_flags; /* Flags influencing the connection to the remote peer */ |
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279 |
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280 DiamId_t pic_realm; /* If configured, the daemon will check the received realm in CER/CEA matches this. */ |
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281 uint16_t pic_port; /* port to connect to. 0: default. */ |
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282 |
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283 uint32_t pic_lft; /* lifetime of this peer when inactive (see pic_flags.exp definition) */ |
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284 int pic_tctimer; /* use this value for TcTimer instead of global, if != 0 */ |
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285 int pic_twtimer; /* use this value for TwTimer instead of global, if != 0 */ |
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286 |
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287 char * pic_priority; /* Priority string for GnuTLS if we don't use the default */ |
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288 |
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289 } config; /* Configured data (static for this peer entry) */ |
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290 |
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291 struct { |
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292 |
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293 /* enum peer_state pir_state; */ |
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294 /* Since 1.1.0, read the state with fd_peer_getstate(peer). */ |
| 36 | 295 |
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296 DiamId_t pir_realm; /* The received realm in CER/CEA. */ |
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297 size_t pir_realmlen; /* length of the realm */ |
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298 |
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299 uint32_t pir_vendorid; /* Content of the Vendor-Id AVP, or 0 by default */ |
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300 uint32_t pir_orstate; /* Origin-State-Id value */ |
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301 os0_t pir_prodname; /* copy of Product-Name AVP (\0 terminated) */ |
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302 uint32_t pir_firmrev; /* Content of the Firmware-Revision AVP */ |
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303 int pir_relay; /* The remote peer advertized the relay application */ |
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304 struct fd_list pir_apps; /* applications advertised by the remote peer, except relay (pi_flags.relay) */ |
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305 int pir_isi; /* Inband-Security-Id advertised (PI_SEC_* bits) */ |
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306 |
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307 uint32_t pir_lastDC; /* The last Disconnect-Cause value received */ |
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308 |
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309 int pir_proto; /* The L4 protocol currently used with the peer (IPPROTO_TCP or IPPROTO_SCTP) */ |
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310 const gnutls_datum_t *pir_cert_list; /* The (valid) credentials that the peer has presented, or NULL if TLS is not used */ |
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311 /* This is inspired from http://www.gnu.org/software/gnutls/manual/gnutls.html#ex_003ax509_002dinfo |
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312 see there for example of using this data */ |
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313 unsigned int pir_cert_list_size; /* Number of certificates in the list */ |
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314 |
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315 } runtime; /* Data populated after connection, may change between 2 connections -- not used by fd_peer_add */ |
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316 |
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317 struct fd_list pi_endpoints; /* Endpoint(s) of the remote peer (configured, discovered, or advertized). list of struct fd_endpoint. DNS resolved if empty. */ |
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318 }; |
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319 |
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320 |
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321 struct peer_hdr { |
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322 struct fd_list chain; /* Link into the list of all the peers, ordered by their Diameter Id (fd_os_cmp) */ |
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323 struct peer_info info; /* The public data */ |
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324 |
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325 /* This header is followed by more data in the private peer structure definition */ |
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326 }; |
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327 |
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328 /* the global list of peers. |
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329 Since we are not expecting so many connections, we don't use a hash, but it might be changed. |
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330 The list items are peer_hdr structures (actually, fd_peer, but the cast is OK) */ |
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331 extern struct fd_list fd_g_peers; |
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332 extern pthread_rwlock_t fd_g_peers_rw; /* protect the list */ |
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333 |
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334 /* |
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335 * FUNCTION: fd_peer_add |
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336 * |
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337 * PARAMETERS: |
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338 * info : Information to create the peer. |
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339 * orig_dbg : A string indicating the origin of the peer information, for debug (ex: conf, redirect, ...) |
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340 * cb : optional, a callback to call (once) when the peer connection is established or failed |
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341 * cb_data : opaque data to pass to the callback. |
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342 * |
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343 * DESCRIPTION: |
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344 * Add a peer to the list of peers to which the daemon must maintain a connexion. |
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345 * |
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346 * The content of info parameter is copied, except for the list of endpoints if |
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347 * not empty, which is simply moved into the created object. It means that the list |
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348 * items must have been malloc'd, so that they can be freed. |
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349 * |
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350 * If cb is not null, the callback is called when the connection is in OPEN state or |
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351 * when an error has occurred. The callback should use the pi_state information to |
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352 * determine which one it is. If the first parameter of the called callback is NULL, it |
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353 * means that the peer is being destroyed before attempt success / failure. |
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354 * cb is called to allow freeing cb_data in * this case. |
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355 * |
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356 * The orig_dbg string is only useful for easing debug, and can be left to NULL. |
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357 * |
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358 * RETURN VALUE: |
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359 * 0 : The peer is added. |
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360 * EINVAL : A parameter is invalid. |
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361 * EEXIST : A peer with the same Diameter-Id is already in the list. |
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362 * (other standard errors may be returned, too, with their standard meaning. Example: |
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363 * ENOMEM : Memory allocation for the new object element failed.) |
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364 */ |
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365 int fd_peer_add ( struct peer_info * info, const char * orig_dbg, void (*cb)(struct peer_info *, void *), void * cb_data ); |
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366 |
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367 /* |
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368 * FUNCTION: fd_peer_getbyid |
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369 * |
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370 * PARAMETERS: |
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371 * diamid : an UTF8 string describing the diameter Id of the peer to seek |
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372 * diamidlen : length of the diamid |
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373 * igncase : perform an almost-case-insensitive search? (slower) |
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374 * peer : The peer is stored here if it exists. |
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375 * |
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376 * DESCRIPTION: |
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377 * Search a peer by its Diameter-Id. |
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378 * |
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379 * RETURN VALUE: |
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380 * 0 : *peer has been updated (to NULL if the peer is not found). |
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381 * !0 : An error occurred. |
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382 */ |
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383 int fd_peer_getbyid( DiamId_t diamid, size_t diamidlen, int igncase, struct peer_hdr ** peer ); |
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384 |
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385 /* |
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386 * FUNCTION: fd_peer_get_state |
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387 * |
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388 * PARAMETERS: |
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389 * peer : The peer which state to read |
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390 * |
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391 * DESCRIPTION: |
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392 * Returns the current state of the peer. |
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393 * |
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394 * RETURN VALUE: |
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395 * -1 : peer is invalid |
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396 * >=0 : the state of the peer at the time of reading. |
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397 */ |
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398 int fd_peer_get_state(struct peer_hdr *peer); |
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399 |
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400 /* |
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401 * FUNCTION: fd_peer_get_load_pending |
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402 * |
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403 * PARAMETERS: |
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404 * peer : The peer which load to read |
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405 * to_receive : (out) number of requests sent to this peer without matching answer yet. |
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406 * to_send : (out) number of requests received from this peer and not yet answered. |
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407 * |
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408 * DESCRIPTION: |
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409 * Returns the current number of requests sent to this peer |
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410 * that have not been answered yet. This is an empirical indication |
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411 * of the workload of this peer. |
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412 * |
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413 * RETURN VALUE: |
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414 * 0 : The load parameter has been updated. (it should have a positive value always) |
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415 * !0 : An error occurred |
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416 */ |
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417 int fd_peer_get_load_pending(struct peer_hdr *peer, long * to_receive, long * to_send); |
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418 |
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419 /* |
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420 * FUNCTION: fd_peer_validate_register |
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421 * |
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422 * PARAMETERS: |
| 972 | 423 * peer_validate : Callback as defined below. |
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424 * |
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425 * DESCRIPTION: |
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426 * Add a callback to authorize / reject incoming peer connections. |
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427 * All registered callbacks are called until a callback sets auth = -1 or auth = 1. |
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428 * If no callback returns a clear decision, the default behavior is applied (reject unknown connections) |
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429 * The callbacks are called in FILO order of their registration. |
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430 * |
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431 * RETURN VALUE: |
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432 * 0 : The callback is added. |
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433 * !0 : An error occurred. |
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434 */ |
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435 int fd_peer_validate_register ( int (*peer_validate)(struct peer_info * /* info */, int * /* auth */, int (**cb2)(struct peer_info *)) ); |
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436 /* |
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437 * CALLBACK: peer_validate |
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438 * |
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439 * PARAMETERS: |
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440 * info : Structure containing information about the peer attempting the connection. |
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441 * auth : Store there the result if the peer is accepted (1), rejected (-1), or unknown (0). |
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442 * cb2 : If != NULL and in case of PI_SEC_TLS_OLD, another callback to call after handshake (if auth = 1). |
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443 * |
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444 * DESCRIPTION: |
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445 * This callback is called when a new connection is being established from an unknown peer, |
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446 * after the CER is received. An extension must register such callback with peer_validate_register. |
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447 * |
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448 * The callback can learn if the peer has sent Inband-Security-Id AVPs in runtime.pir_isi fields. |
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449 * It can also learn if a handshake has already been performed in runtime.pir_cert_list field. |
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450 * The callback must set the value of config.pic_flags.sec appropriately to allow a connection without TLS. |
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451 * |
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452 * If the old TLS mechanism is used, |
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453 * the extension may also need to check the credentials provided during the TLS |
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454 * exchange (remote certificate). For this purpose, it may set the address of a new callback |
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455 * to be called once the handshake is completed. This new callback receives the information |
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456 * structure as parameter (with pir_cert_list set) and returns 0 if the credentials are correct, |
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457 * or an error code otherwise. If the error code is received, the connection is closed and the |
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458 * peer is destroyed. |
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459 * Note that freeDiameter already achieves some usual checks. The callback may be used to enforce |
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460 * additional restrictions. |
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461 * |
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462 * RETURN VALUE: |
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463 * 0 : The authorization decision has been written in the location pointed by auth. |
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464 * !0 : An error occurred. |
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465 */ |
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466 |
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467 |
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468 |
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469 /*============================================================*/ |
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470 /* MESSAGES */ |
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471 /*============================================================*/ |
| 0 | 472 |
| 473 /* | |
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474 * FUNCTION: fd_msg_send, fd_msg_send_timeout |
| 0 | 475 * |
| 476 * PARAMETERS: | |
| 477 * pmsg : Location of the message to be sent on the network (set to NULL on function return to avoid double deletion). | |
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478 * anscb : A callback to be called when corresponding answer is received, when sending a request (not used with answers) |
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479 * anscb_data : opaque data to be passed back to the anscb (or expirecb) when it is called. |
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480 * expirecb : (only for fd_msg_send_timeout) If the request did not get an answer before timeout, this callback is called. |
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481 * timeout : (only for fd_msg_send_timeout) sets the absolute time until when to wait for an answer. Past this time, |
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482 * the expirecb is called with the request and the answer will be discarded if received later. |
| 0 | 483 * |
| 484 * DESCRIPTION: | |
| 485 * Sends a message on the network. (actually simply queues it in a global queue, to be picked by a daemon's thread) | |
| 486 * For requests, the end-to-end id must be set (see fd_msg_get_eteid / MSGFL_ALLOC_ETEID). | |
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487 * For answers, the message must be created with function fd_msg_new_answer_from_req. |
| 0 | 488 * |
| 489 * The routing module will handle sending to the correct peer, usually based on the Destination-Realm / Destination-Host AVP. | |
| 490 * | |
| 491 * If the msg is a request, there are two ways of receiving the answer: | |
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492 * - either having registered a callback in the dispatch module (see fd_disp_register) |
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493 * - or provide a anscb callback here. If such callback is provided, it is called before the dispatch callbacks. |
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494 * The prototype for this anscb callback function is: |
| 0 | 495 * void anscb(void * data, struct msg ** answer) |
| 496 * where: | |
| 497 * data : opaque data that was registered along with the callback. | |
| 498 * answer : location of the pointer to the answer. | |
| 499 * note1: on function return, if *answer is not NULL, the message is passed to the dispatch module for regular callbacks. | |
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500 * otherwise, the callback must take care of freeing the message (fd_msg_free). |
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501 * note2: the opaque data is not freed by the daemon in any case, extensions should ensure clean handling in fd_ext_fini. |
| 0 | 502 * |
| 503 * If no callback is registered to handle an answer, the message is discarded and an error is logged. | |
| 504 * | |
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505 * fd_msg_send_timeout is similar to fd_msg_send, except that it takes two additional arguments "expirecb" and "timeout". |
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506 * If the message parameter is an answer, there is no difference with fd_msg_send. |
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507 * Otherwise, if the corresponding answer (or error) is received before the timeout date elapses, everything occurs as with fd_msg_send. |
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508 * Otherwise, the request is removed from the queue (meaning the matching answer will be discarded upon reception) and passed to the expirecb |
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509 * function. Upon return, if the *msg parameter is not NULL, it is freed (not passed to other callbacks). |
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510 * expirecb is called in a dedicated thread. |
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511 * |
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512 * The prototype for the expirecb callback function is: |
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513 * void expirecb(void * data, struct peer_hdr * sentto, struct msg ** request) |
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514 * where: |
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515 * data : opaque data that was registered along with the callback. |
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516 * sentto : pointer to the peer to which the message was sent and no answer received within timeout. |
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517 * request: location of the pointer to the request that was not answered. |
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518 * |
| 0 | 519 * RETURN VALUE: |
| 520 * 0 : The message has been queued for sending (sending may fail asynchronously). | |
| 521 * EINVAL : A parameter is invalid (ex: anscb provided but message is not a request). | |
| 522 * ... | |
| 523 */ | |
| 524 int fd_msg_send ( struct msg ** pmsg, void (*anscb)(void *, struct msg **), void * data ); | |
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525 int fd_msg_send_timeout ( struct msg ** pmsg, void (*anscb)(void *, struct msg **), void * data, void (*expirecb)(void *, DiamId_t, size_t, struct msg **), const struct timespec *timeout ); |
| 0 | 526 |
| 527 /* | |
| 528 * FUNCTION: fd_msg_rescode_set | |
| 529 * | |
| 530 * PARAMETERS: | |
| 531 * msg : A msg object -- it must be an answer. | |
| 532 * rescode : The name of the returned error code (ex: "DIAMETER_INVALID_AVP") | |
| 533 * errormsg : (optional) human-readable error message to put in Error-Message AVP | |
| 534 * optavp : (optional) If provided, the content will be put inside a Failed-AVP | |
| 535 * type_id : 0 => nothing; 1 => adds Origin-Host and Origin-Realm with local info. 2=> adds Error-Reporting-Host. | |
| 536 * | |
| 537 * DESCRIPTION: | |
| 538 * This function adds a Result-Code AVP to a message, and optionally | |
| 539 * - sets the 'E' error flag in the header, | |
| 540 * - adds Error-Message, Error-Reporting-Host and Failed-AVP AVPs. | |
| 541 * | |
| 542 * RETURN VALUE: | |
| 543 * 0 : Operation complete. | |
| 544 * !0 : an error occurred. | |
| 545 */ | |
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546 int fd_msg_rescode_set( struct msg * msg, char * rescode, char * errormsg, struct avp * optavp, int type_id ); |
| 0 | 547 |
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548 /* Add Origin-Host, Origin-Realm, (if osi) Origin-State-Id AVPS at the end of the message */ |
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549 int fd_msg_add_origin ( struct msg * msg, int osi ); |
| 0 | 550 |
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551 /* Generate a new Session-Id and add it at the beginning of the message (opt is added at the end of the sid if provided) */ |
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552 int fd_msg_new_session( struct msg * msg, os0_t opt, size_t optlen ); |
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553 |
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554 |
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555 /* Parse a message against our dictionary, and in case of error log and eventually build the error reply (on return and EBADMSG, *msg == NULL or *msg is the error message ready to send) */ |
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556 int fd_msg_parse_or_error( struct msg ** msg ); |
| 0 | 557 |
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558 |
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559 |
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560 |
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561 /*============================================================*/ |
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562 /* DISPATCH */ |
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563 /*============================================================*/ |
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564 |
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565 /* |
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566 * FUNCTION: fd_disp_app_support |
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567 * |
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568 * PARAMETERS: |
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569 * app : The dictionary object corresponding to the Application. |
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570 * vendor : (Optional) the dictionary object of a Vendor to claim support in Vendor-Specific-Application-Id |
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571 * auth : Support auth app part. |
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572 * acct : Support acct app part. |
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573 * |
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574 * DESCRIPTION: |
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575 * Registers an application to be advertized in CER/CEA exchanges. |
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576 * Messages with an application-id matching a registered value are passed to the dispatch module, |
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577 * while other messages are simply relayed or an error is returned (if local node does not relay) |
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578 * |
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579 * RETURN VALUE: |
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580 * 0 : The application support is registered. |
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581 * EINVAL : A parameter is invalid. |
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582 */ |
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583 int fd_disp_app_support ( struct dict_object * app, struct dict_object * vendor, int auth, int acct ); |
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584 |
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585 /* Note: if we want to support capabilities updates, we'll have to add possibility to remove an app as well... */ |
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586 |
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587 |
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588 /*============================================================*/ |
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589 /* ROUTING */ |
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590 /*============================================================*/ |
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591 |
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592 /* This file contains the definitions of types and functions involved in the routing decisions in freeDiameter, |
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593 * and that can be called by extensions. |
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594 * |
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595 * Three different type of messages must be distinguished: |
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596 * - Messages received, and the peer is final recipient (IN messages) |
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597 * - Messages received, and the peer is not final recipient (FWD messages) |
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598 * - Message is locally generated (OUT messages) |
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599 * |
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600 * There are three global message queues (in queues.c) and also peers-specific queues (in struct fd_peer). |
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601 * |
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602 * (*) IN messages processing details: |
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603 * - the message is received from the remote peer, a FDEVP_CNX_MSG_RECV event is generated for the peer. |
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604 * - the PSM thread parses the buffer, does some verifications, handles non routable messages (fd_msg_is_routable) |
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605 * - routable messages are queued in the fd_g_incoming global queue. |
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606 * - a thread (routing-in) picks the message and takes the decision if it is handled locally or forwarded, |
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607 * based on local capabilities (registered by extensions with fd_disp_app_support). |
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608 * - If the message is handled locally, it is queued in fd_g_local. |
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609 * - Another thread (dispatch.c) will handle this message and pass it to registered callbacks (see fd_disp_register in libfreeDiameter.h). |
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610 * |
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611 * (*) FWD messages details: |
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612 * - The process is the same as for IN messages, until the routing-in threads makes its decision that the message is not handled locally. |
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613 * - If the local peer does not relay message, an error DIAMETER_APPLICATION_UNSUPPORTED is returned. |
| 972 | 614 * - All callbacks registered with fd_rt_fwd_register are called for the message (see below). |
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615 * - these callbacks will typically do proxying work. Note that adding the route-record is handled by the daemon. |
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616 * - Once all callbacks have been called, the message is queued in the global fd_g_outgoing queue. |
| 972 | 617 * - The remaining processing is the same as for OUT messages, as described below. |
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618 * |
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619 * (*) OUT messages details: |
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620 * - The message are picked from fd_g_outgoing (they are queued there as result of forwarding process or call to fd_msg_send.) |
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621 * - The (routing-out) thread builds a list of possible destinations for the message, as follow: |
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622 * - create a list of all known peers in the "OPEN" state. |
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623 * - remove from that list all peers that are in a Route-Record AVP of the message, to avoid routing loops. |
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624 * - remove also all peers that have previously replied an error message for this message. |
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625 * - If the list is empty, create an error UNABLE_TO_DELIVER (note: should we trig dynamic discovery here???) and reply. |
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626 * - Otherwise, call all callbacks registered by function fd_rt_out_register, with the list of peers and the message. |
| 972 | 627 * - Order the resulting list of peers by score (see below), and sent the message to the peer with highest (positive) score. |
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628 * - in case the peer is no longer in the "OPEN" state, send the message to the second peer in the list. |
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629 * - if no peer is in OPEN state anymore, restart the process of creating the list. |
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630 * - Once a peer has been selected, the message is queued into that peer's outgoing queue. |
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631 * |
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632 * The following functions allow an extension to register or remove a callback as described above. |
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633 */ |
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634 |
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635 /********** Forwarding callbacks: for Proxy operations ***********/ |
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636 |
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637 /* Handle to registered callback */ |
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638 struct fd_rt_fwd_hdl; |
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639 |
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640 /* Message direction for the callback */ |
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641 enum fd_rt_fwd_dir { |
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642 RT_FWD_REQ = 1, /* The callback will be called on forwarded requests only */ |
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643 RT_FWD_ALL = 2, /* The callback will be called on all forwarded messages (requests and answers )*/ |
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644 RT_FWD_ANS = 3 /* The callback will be called on answers and errors only */ |
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645 }; |
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646 |
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647 /* |
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648 * FUNCTION: fd_rt_fwd_register |
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649 * |
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650 * PARAMETERS: |
| 972 | 651 * rt_fwd_cb : The callback function to register (see prototype below). |
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652 * cbdata : Pointer to pass to the callback when it is called. The data is opaque to the daemon. |
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653 * dir : One of the RT_FWD_* directions defined above. |
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654 * handler : On success, a handler to the registered callback is stored here. |
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655 * This handler will be used to unregister the cb. |
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656 * |
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657 * DESCRIPTION: |
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658 * Register a new callback for forwarded messages. See explanations above. |
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659 * Note that there is no guaranteed order for the callbacks calls. |
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660 * |
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661 * RETURN VALUE: |
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662 * 0 : The callback is registered. |
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663 * EINVAL : A parameter is invalid. |
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664 * ENOMEM : Not enough memory to complete the operation |
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665 */ |
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666 int fd_rt_fwd_register ( int (*rt_fwd_cb)(void * cbdata, struct msg ** msg), void * cbdata, enum fd_rt_fwd_dir dir, struct fd_rt_fwd_hdl ** handler ); |
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667 /* |
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668 * CALLBACK: rt_fwd_cb |
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669 * |
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670 * PARAMETERS: |
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671 * data : pointer to some data that was passed when the callback was registered (optional). |
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672 * msg : The message that is being forwarded. |
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673 * |
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674 * DESCRIPTION: |
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675 * This callback is called when a message is forwarded to another peer. It may for example add a Proxy-Info AVP. |
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676 * The callback may also choose to handle the message in a more complex form. In that case, it must set *msg = NULL |
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677 * and handle it differently. In such case, the forwarding thread will stop processing this message. |
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678 * |
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679 * RETURN VALUE: |
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680 * 0 : Operation complete. |
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681 * !0 : An error occurred -- will result in daemon's termination. |
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682 */ |
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683 |
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684 /* |
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685 * FUNCTION: fd_rt_fwd_unregister |
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686 * |
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687 * PARAMETERS: |
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688 * handler : The handler of the callback that must be unregistered. |
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689 * cbdata : Will receive the data registered with the callback, that can be freed if needed. |
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690 * |
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691 * DESCRIPTION: |
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692 * Removes a callback from the list of registered callbacks. |
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693 * |
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694 * RETURN VALUE: |
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695 * 0 : The callback is unregistered. |
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696 * EINVAL : A parameter is invalid. |
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697 */ |
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698 int fd_rt_fwd_unregister ( struct fd_rt_fwd_hdl * handler, void ** cbdata ); |
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699 |
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700 |
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701 /********** Out callbacks: for next hop routing decision operations ***********/ |
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702 |
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703 /* Handle to registered callback */ |
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704 struct fd_rt_out_hdl; |
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705 |
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706 enum fd_rt_out_score { |
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707 FD_SCORE_NO_DELIVERY = -70, /* We should not send this message to this candidate */ |
|
717
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708 FD_SCORE_SENT_REDIRECT = -60, /* If this peer previously sent a Redirect indication that applies to this message */ |
|
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709 FD_SCORE_INI = -2, /* All candidates are initialized with this value */ |
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710 FD_SCORE_LOAD_BALANCE = 1, /* Use this to differentiate between several peers with the same score */ |
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711 FD_SCORE_DEFAULT = 5, /* The peer is a default route for all messages */ |
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712 FD_SCORE_DEFAULT_REALM = 10, /* The peer is a default route for this realm */ |
|
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713 FD_SCORE_REALM = 15, /* The peer belongs to Destination-Realm of the message */ |
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714 FD_SCORE_REDIR_HOST = 25, /* If there is a redirect rule with ALL_HOST for these message and peer */ |
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715 FD_SCORE_REDIR_APP = 30, /* If there is a redirect rule with ALL_APPLICATION for these message and peer */ |
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716 FD_SCORE_REDIR_REALM = 35, /* If there is a redirect rule with ALL_REALM for these message and peer */ |
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717 FD_SCORE_REDIR_REALM_APP = 40, /* If there is a redirect rule with REALM_AND_APPLICATION for these message and peer */ |
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718 FD_SCORE_REDIR_USER = 45, /* If there is a redirect rule with ALL_USER for these message and peer */ |
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719 FD_SCORE_REDIR_SESSION = 50, /* If there is a redirect rule with ALL_SESSION for these message and peer */ |
|
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720 FD_SCORE_REDIR_ONCE = 55, /* If there is a redirect rule with DONT_CACHE for these message and peer */ |
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721 FD_SCORE_FINALDEST = 100 /* If the peer is the final recipient of the message (i.e. matching Destination-Host), it receives a big score. */ |
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722 }; |
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723 |
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724 /* |
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725 * FUNCTION: fd_rt_out_register |
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726 * |
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727 * PARAMETERS: |
| 972 | 728 * rt_out_cb : The callback function to register (see prototype below). |
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729 * cbdata : Pointer to pass to the callback when it is called. The data is opaque to the daemon. |
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730 * priority : Order for calling this callback. The callbacks are called in reverse priority order (higher priority = called sooner). |
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731 * handler : On success, a handler to the registered callback is stored here. |
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732 * This handler will be used to unregister the cb. |
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733 * |
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734 * DESCRIPTION: |
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735 * Register a new callback to handle OUT routing decisions. See explanations above. |
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736 * |
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737 * RETURN VALUE: |
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738 * 0 : The callback is registered. |
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739 * EINVAL : A parameter is invalid. |
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740 * ENOMEM : Not enough memory to complete the operation |
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741 */ |
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742 int fd_rt_out_register ( int (*rt_out_cb)(void * cbdata, struct msg * msg, struct fd_list * candidates), void * cbdata, int priority, struct fd_rt_out_hdl ** handler ); |
|
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743 /* |
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744 * CALLBACK: rt_out_cb |
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745 * |
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746 * PARAMETERS: |
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747 * cbdata : pointer to some data that was registered with the callback. |
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748 * msg : The message that must be sent. |
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749 * list : The list of peers to which the message may be sent to, as returned by fd_rtd_candidate_extract |
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750 * |
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751 * DESCRIPTION: |
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752 * This callback must attribute a score (preferably from FD_SCORE_*) to each candidate peer in the list. |
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753 * Once all registered callbacks have been called, the message is sent to the candidate with the highest score. |
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754 * Note that each callback must *add* its locally-attributed score to the candidate current "score" parameter, not replace it! |
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755 * Note also that this callback must be re-entrant since it may be called by several threads at the same time |
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756 * (for different messages) |
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757 * |
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758 * RETURN VALUE: |
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759 * 0 : Operation complete. |
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760 * !0 : An error occurred. |
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761 */ |
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762 |
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763 /* |
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764 * FUNCTION: fd_rt_out_unregister |
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765 * |
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766 * PARAMETERS: |
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767 * handler : The handler of the callback that must be unregistered. |
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768 * cbdata : Will receive the data registered with the callback, that can be freed if needed. |
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769 * |
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770 * DESCRIPTION: |
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771 * Removes a callback from the list of registered callbacks. |
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772 * |
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773 * RETURN VALUE: |
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774 * 0 : The callback is unregistered. |
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775 * EINVAL : A parameter is invalid. |
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776 */ |
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777 int fd_rt_out_unregister ( struct fd_rt_out_hdl * handler, void ** cbdata ); |
|
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778 |
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779 |
|
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780 /*============================================================*/ |
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781 /* EVENTS */ |
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782 /*============================================================*/ |
| 82 | 783 |
| 784 struct fd_event { | |
| 785 int code; /* codespace depends on the queue */ | |
| 786 size_t size; | |
| 787 void *data; | |
| 788 }; | |
| 789 | |
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790 /* Daemon's codespace: 1000->1999 (1500->1999 defined in fdcore-internal.h) */ |
| 82 | 791 enum { |
| 792 FDEV_TERMINATE = 1000 /* request to terminate */ | |
|
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793 ,FDEV_TRIGGER /* Trigger available for extensions. size is sizeof(int), data is int * */ |
| 82 | 794 }; |
| 795 | |
| 796 int fd_event_send(struct fifo *queue, int code, size_t datasz, void * data); | |
|
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797 int fd_event_get(struct fifo *queue, int * code, size_t * datasz, void ** data); |
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798 int fd_event_timedget(struct fifo *queue, struct timespec * timeout, int timeoutcode, int * code, size_t * datasz, void ** data); |
| 82 | 799 void fd_event_destroy(struct fifo **queue, void (*free_cb)(void * data)); |
| 800 const char * fd_ev_str(int event); | |
| 801 | |
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802 /* for extensions */ |
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803 int fd_event_trig_regcb(int trigger_val, const char * module, void (*cb)(void)); |
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804 |
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805 #ifndef SWIG |
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806 DECLARE_FD_DUMP_PROTOTYPE(fd_event_trig_dump); |
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807 |
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808 /* The "old" FD_EV_DUMP_* events are replaced with direct calls to the following dump functions */ |
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809 DECLARE_FD_DUMP_PROTOTYPE(fd_conf_dump); |
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810 DECLARE_FD_DUMP_PROTOTYPE(fd_ext_dump); |
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811 DECLARE_FD_DUMP_PROTOTYPE(fd_servers_dump); |
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812 #endif /* SWIG */ |
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813 DECLARE_FD_DUMP_PROTOTYPE(fd_peer_dump_list, int details); |
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814 DECLARE_FD_DUMP_PROTOTYPE(fd_peer_dump, struct peer_hdr * p, int details); |
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815 |
|
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816 /*============================================================*/ |
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817 /* ENDPOINTS */ |
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818 /*============================================================*/ |
|
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819 |
| 82 | 820 struct fd_endpoint { |
| 821 struct fd_list chain; /* link in cnf_endpoints list */ | |
| 822 | |
| 823 union { | |
| 824 sSS ss; /* the socket information. List is always ordered by ss value (memcmp) -- see fd_ep_add_merge */ | |
| 825 sSA4 sin; | |
| 826 sSA6 sin6; | |
| 827 sSA sa; | |
|
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828 } |
|
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829 #ifdef SWIG /* nested anonymous unions are not supported yet */ |
|
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830 s |
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831 #endif /* SWIG */ |
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832 ; |
| 82 | 833 |
| 834 #define EP_FL_CONF (1 << 0) /* This endpoint is statically configured in a configuration file */ | |
| 835 #define EP_FL_DISC (1 << 1) /* This endpoint was resolved from the Diameter Identity or other DNS query */ | |
| 836 #define EP_FL_ADV (1 << 2) /* This endpoint was advertized in Diameter CER/CEA exchange */ | |
| 837 #define EP_FL_LL (1 << 3) /* Lower layer mechanism provided this endpoint */ | |
| 838 #define EP_FL_PRIMARY (1 << 4) /* This endpoint is primary in a multihomed SCTP association */ | |
| 140 | 839 #define EP_ACCEPTALL (1 << 15) /* This flag allows bypassing the address filter in fd_ep_add_merge. */ |
| 82 | 840 uint32_t flags; /* Additional information about the endpoint */ |
| 841 | |
| 842 /* To add: a validity timestamp for DNS records ? How do we retrieve this lifetime from DNS ? */ | |
| 843 }; | |
| 844 | |
|
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845 int fd_ep_add_merge( struct fd_list * list, sSA * sa, socklen_t sl, uint32_t flags ); |
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846 int fd_ep_filter( struct fd_list * list, uint32_t flags ); |
|
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847 int fd_ep_filter_family( struct fd_list * list, int af ); |
|
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848 int fd_ep_filter_list( struct fd_list * list, struct fd_list * exclude_list ); |
|
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849 int fd_ep_clearflags( struct fd_list * list, uint32_t flags ); |
|
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850 DECLARE_FD_DUMP_PROTOTYPE(fd_ep_dump_one, struct fd_endpoint * ep ); |
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851 DECLARE_FD_DUMP_PROTOTYPE(fd_ep_dump, int indent, struct fd_list * eps ); |
|
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852 |
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853 |
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854 /*============================================================*/ |
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855 /* APPLICATIONS IDs */ |
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856 /*============================================================*/ |
|
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857 |
| 82 | 858 struct fd_app { |
| 859 struct fd_list chain; /* link in cnf_apps list. List ordered by appid. */ | |
| 860 struct { | |
| 861 unsigned auth : 1; | |
| 862 unsigned acct : 1; | |
| 863 } flags; | |
| 864 vendor_id_t vndid; /* if not 0, Vendor-Specific-App-Id AVP will be used */ | |
| 865 application_id_t appid; /* The identifier of the application */ | |
| 866 }; | |
| 867 | |
|
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868 int fd_app_merge(struct fd_list * list, application_id_t aid, vendor_id_t vid, int auth, int acct); |
| 87 | 869 int fd_app_check(struct fd_list * list, application_id_t aid, struct fd_app **detail); |
|
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870 int fd_app_check_common(struct fd_list * list1, struct fd_list * list2, int * common_found); |
|
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871 int fd_app_empty(struct fd_list * list); |
|
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872 |
|
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873 |
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874 |
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875 /*============================================================*/ |
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876 /* MONITORING */ |
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877 /*============================================================*/ |
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878 |
|
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879 /* These functions allow an extension to collect state information about the |
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880 * framework, as well as being hooked at some key checkpoints in the processing |
|
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881 * for logging or statistics purpose. |
|
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882 */ |
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883 |
|
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884 |
|
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885 /* CALLBACK: fd_hook_cb |
|
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Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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886 * |
|
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887 * PARAMETERS: |
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888 * type : The type of hook that triggered this call, in case same cb is registered for several hooks. |
|
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889 * msg : If relevant, the pointer to the message triggering the call. NULL otherwise. |
|
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890 * peer : If relevant, the pointer to the peer associated with the call. NULL otherwise. |
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891 * other : For some callbacks, the remaining information is passed in this parameter. See each hook detail. |
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892 * permsgdata : Structure associated with a given message, across several hooks. |
|
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893 * A different structure is associated with requests and corresponding answers. |
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894 * See fd_hook_data_hdl below for details. |
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895 * If no fd_hook_data_hdl is registered with this callback, this parameter is always NULL |
|
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896 * regdata : Data pointer stored at registration, opaque for the framework. |
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897 * |
|
7a7f63f6f135
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898 * DESCRIPTION: |
|
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899 * When such callback is registered with fd_hook_register function, it will be called on matching events with |
|
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900 * the parameters as described in the list of fd_hook_type below. One can use this mechanism for e.g.: |
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901 * - log completely the messages for safety / backup |
|
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Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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902 * - create statistics information on the throughput |
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903 * - ... |
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904 * |
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905 * IMPORTANT: the callback MUST NOT change the memory pointed by the different parameters (peer, message, ...) |
|
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906 * |
|
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907 * RETURN VALUE: |
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908 * none. |
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909 */ |
|
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Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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910 |
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911 /* The available hooks in the framework */ |
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912 enum fd_hook_type { |
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913 |
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914 HOOK_DATA_RECEIVED = 0, |
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915 /* Hook called as soon as a message has been received from the network, after TLS & boundary processing. |
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916 - {msg} is NULL. |
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917 - {peer} is NULL. |
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918 - {other} is a pointer to a structure { size_t len; uint8_t * buf; } containing the received buffer. |
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919 - {permsgdata} points to either a new empty structure allocated for this message (cf. fd_hook_data_hdl), or NULL if no hdl is registered. |
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920 */ |
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921 |
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922 HOOK_MESSAGE_RECEIVED, |
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923 /* Hook called when a message has been received and the structure has been parsed successfully (list of AVPs). |
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924 - {msg} points to the parsed message. At this time, the objects have not been dictionary resolved. If you |
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|
925 try to call fd_msg_parse_dict, it will slow down the operation of a relay agent. |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
926 - {peer} is set if the message is received from a peer's connection, and NULL if the message is from a new client |
|
1063
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
927 connected and not yet identified |
|
1098
f38d77f9cfd3
Initial implementation of the hook mechanism
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1088
diff
changeset
|
928 - {other} is NULL. |
|
f38d77f9cfd3
Initial implementation of the hook mechanism
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1088
diff
changeset
|
929 - {permsgdata} points to either a new empty structure allocated for this message or the one passed to HOOK_DATA_RECEIVED if used. |
|
1063
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
930 */ |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
931 |
|
1069
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
932 HOOK_MESSAGE_LOCAL, |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
933 /* Hook called when a request message has been created locally and is being sent. |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
934 - {msg} points to the message. |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
935 - {peer} is NULL |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
936 - {other} is NULL |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
937 - {permsgdata} points to a new empty structure allocated for this request (cf. fd_hook_data_hdl) |
|
1063
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
938 */ |
|
1069
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
939 |
|
1063
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
940 HOOK_MESSAGE_SENT, |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
941 /* Hook called when a message has been sent to a peer. The message might be freed as soon as the hook function returns, |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
942 so it is not safe to store the pointer for asynchronous processing. |
|
1069
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
943 - {msg} points to the sent message. Again, the objects may not have been dictionary resolved. If you |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
944 try to call fd_msg_parse_dict, it will slow down the operation of a relay agent. |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
945 - {peer} is set if the message is sent to a peer's connection, and NULL if the message is sent to a new client |
|
1098
f38d77f9cfd3
Initial implementation of the hook mechanism
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1088
diff
changeset
|
946 connected and not yet identified, or being rejected |
|
1069
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
947 - {other} is NULL. |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
948 - {permsgdata} points to existing structure if any, or a new structure otherwise. |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
949 */ |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
950 |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
951 HOOK_MESSAGE_FAILOVER, |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
952 /* Hook called when a message that was sent to a peer is being requeued, because e.g. the connection was teared down. |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
953 In that case the message will go again through the routing process. |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
954 - {msg} points to the corresponding request message (the answer is discarded). Again, the objects may not have been dictionary resolved. If you |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
955 try to call fd_msg_parse_dict, it might slow down the operation of a relay agent, although this hook is not on the normal execution path. |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
956 - {peer} is the peer this message was previously sent to. |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
957 - {other} is NULL. |
|
1098
f38d77f9cfd3
Initial implementation of the hook mechanism
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1088
diff
changeset
|
958 - {permsgdata} points to existing structure if any, or a new structure otherwise. |
|
1063
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
959 */ |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
960 |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
961 HOOK_MESSAGE_ROUTING_ERROR, |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
962 /* Hook called when a message being processed by the routing thread meets an error such as: |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
963 -- parsing error |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
964 -- no remaining available peer for sending, based on routing callbacks decisions (maybe after retries). |
|
1069
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
965 - {msg} points to the message. Again, the objects may not have been dictionary resolved. If you |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
966 try to call fd_msg_parse_dict, it might slow down the operation of a relay agent, although this hook is not on the normal execution path. |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
967 - {peer} is NULL. |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
968 - {other} is a char * pointer to the error message (human-readable). |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
969 - {permsgdata} points to existing structure associated with this message (or new structure if no previous hook was registered). |
|
1063
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
970 */ |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
971 |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
972 HOOK_MESSAGE_ROUTING_FORWARD, |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
973 /* Hook called when a received message is deemed to be not handled locally by the routing_dispatch process. |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
974 The decision of knowing which peer it will be sent to is not made yet (or if an error will be returned). |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
975 The hook is trigged before the callbacks registered with fd_rt_fwd_register are called. |
|
1069
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
976 - {msg} points to the message. Again, the objects may not have been dictionary resolved. |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
977 If you try to call fd_msg_parse_dict, it will slow down the operation of a relay agent. |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
978 - {peer} is NULL. |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
979 - {other} is NULL. |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
980 - {permsgdata} points to existing structure associated with this message (or new structure if no previous hook was registered). |
|
1063
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
981 */ |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
982 |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
983 HOOK_MESSAGE_ROUTING_LOCAL, |
|
1069
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
984 /* Hook called when a received message is handled locally by the routing_dispatch process (i.e., not forwarded). |
|
1063
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
985 The hook is trigged before the callbacks registered with fd_disp_register are called. |
|
1069
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
986 - {msg} points to the message. Here, the message has been already parsed completely & successfully. |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
987 - {peer} is NULL. |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
988 - {other} is NULL. |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
989 - {permsgdata} points to existing structure associated with this message (or new structure if no previous hook was registered). |
|
1063
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
990 */ |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
991 |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
992 HOOK_MESSAGE_DROPPED, |
|
1098
f38d77f9cfd3
Initial implementation of the hook mechanism
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1088
diff
changeset
|
993 /* Hook called when a message is being discarded by the framework because of some error condition (normal or abnormal). |
|
f38d77f9cfd3
Initial implementation of the hook mechanism
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1088
diff
changeset
|
994 It is probably a good idea to log this for analysis / backup. |
|
1069
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
995 - {msg} points to the message, which will be freed as soon as the hook returns. |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
996 - {peer} is NULL. |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
997 - {other} is a char * pointer to the error message (human-readable). |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
998 - {permsgdata} points to existing structure associated with this message (or new structure if no previous hook was registered). |
|
1063
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
999 */ |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
1000 |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
1001 HOOK_PEER_CONNECT_FAILED, |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
1002 /* Hook called when a connection attempt to a remote peer has failed. |
|
1069
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
1003 - {msg} may be NULL (lower layer error, e.g. connection timeout) or points to the CEA message sent or received (with an error code). |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1067
diff
changeset
|
1004 - {peer} may be NULL for incoming requests from unknown peers being rejected, otherwise it points to the peer structure associated with the attempt. |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
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diff
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1005 - {other} is a char * pointer to the error message (human-readable). |
|
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|
1006 - {permsgdata} is always NULL for this hook. |
|
1063
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
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diff
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|
1007 */ |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
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|
1008 |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
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diff
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|
1009 HOOK_PEER_CONNECT_SUCCESS, |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
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|
1010 /* Hook called when a connection attempt to a remote peer has succeeded (the peer moves to OPEN state). |
|
1069
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1011 - {msg} points to the CEA message sent or received (with an success code) -- in case it is sent, you can always get access to the matching CER. |
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1012 - {peer} points to the peer structure. |
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1013 - {other} is NULL. |
|
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1014 - {permsgdata} is always NULL for this hook. |
|
1063
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
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diff
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|
1015 */ |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
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|
1016 |
|
1069
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
Sebastien Decugis <sdecugis@freediameter.net>
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|
1017 #define HOOK_PEER_LAST HOOK_PEER_CONNECT_SUCCESS |
|
1063
7a7f63f6f135
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Sebastien Decugis <sdecugis@freediameter.net>
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1018 }; |
|
1069
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1019 |
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1020 |
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1098
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1021 /* Type if the {permsgdata}. It is up to each extension to define its own structure. This is opaque for the framework. */ |
|
1069
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1022 struct fd_hook_permsgdata; |
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1023 |
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1024 /* A handle that will be associated with the extension, and with the permsgdata structures. */ |
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1025 struct fd_hook_data_hdl; |
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1026 |
|
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1027 /* Function to register a new fd_hook_data_hdl. Should be called by your extension init function. |
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1028 * The arguments are the functions called to initialize a new fd_hook_permsgdata and to free this structure when the corresponding message is being freed. |
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1029 */ |
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|
1030 /* |
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1031 * FUNCTION: fd_hook_data_register |
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1032 * |
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1033 * PARAMETERS: |
|
1098
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1034 * permsgdata_size : the size of the fd_hook_permsgdata structure. |
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1035 * permsgdata_init_cb : function called to initialize a new fd_hook_permsgdata structure, when a hook will be called for a message that does not have such structure yet. |
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1036 * The memory is already allocated and blanked, so you can pass NULL if no further handling is required. |
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1037 * permsgdata_fini_cb : function called when a message is being disposed. It should free the resources associated with the fd_hook_permsgdata. |
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1038 * You can pass NULL if no special handling is required. The memory of the permsgdata structure itself will be freed by the framework. |
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1039 * new_handle : On success, a handler to the registered callback is stored here. |
|
1069
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1040 * This handler will be used to unregister the cb. |
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1041 * |
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1042 * DESCRIPTION: |
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1043 * Register a new fd_hook_data_hdl. This handle is used during hooks registration (see below) in order to associate data with the messages, to allow keeping tracking of the message easily. |
|
1098
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1044 * Note that these handlers are statically allocated and cannot be unregistered. FD_HOOK_HANDLE_LIMIT handlers can be registered at maximum (recompile libfdproto if you change this value) |
|
1069
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Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
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1045 * |
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1046 * RETURN VALUE: |
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1047 * 0 : The callback is registered. |
|
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1048 * EINVAL : A parameter is invalid. |
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1049 * ENOSPC : Too many handles already registered. You may need to increase the limit in the code. |
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1050 */ |
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|
1051 int fd_hook_data_register( |
|
1098
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1052 size_t permsgdata_size, |
|
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1053 void (*permsgdata_init_cb) (struct fd_hook_permsgdata *), |
|
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|
1054 void (*permsgdata_fini_cb) (struct fd_hook_permsgdata *), |
|
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1055 struct fd_hook_data_hdl **new_handle |
|
1069
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Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
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|
1056 ); |
|
544fa1be79a9
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Sebastien Decugis <sdecugis@freediameter.net>
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|
1057 |
|
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
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|
1058 /* A handler associated with a registered hook callback (for cleanup) */ |
|
1063
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
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diff
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|
1059 struct fd_hook_hdl; |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
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|
1060 |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
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|
1061 /* |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
changeset
|
1062 * FUNCTION: fd_hook_register |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
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|
1063 * |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
1014
diff
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|
1064 * PARAMETERS: |
|
1098
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|
1065 * type_mask : A bitmask of fd_hook_type bits for which this cb is registered, e.g. ((1 << HOOK_MESSAGE_RECEIVED) || (1 << HOOK_MESSAGE_SENT)) |
|
1063
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
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diff
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|
1066 * fd_hook_cb : The callback function to register (see prototype above). |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
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1014
diff
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|
1067 * regdata : Pointer to pass to the callback when it is called. The data is opaque to the daemon. |
|
1069
544fa1be79a9
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|
1068 * data_hdl : If permsgdata is requested for the hooks, a handler registered with fd_hook_data_register. NULL otherwise. |
|
1063
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
parents:
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|
1069 * handler : On success, a handler to the registered callback is stored here. |
|
1069
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1070 * This handler can be used to unregister the cb. |
|
1063
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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|
1071 * |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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parents:
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|
1072 * DESCRIPTION: |
|
1069
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1073 * Register a new hook in the framework. See explanations above. |
|
1063
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1074 * |
|
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Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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|
1075 * RETURN VALUE: |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
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|
1076 * 0 : The callback is registered. |
|
1069
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|
1077 * EEXIST : Another callback is already registered for this type of hook (HOOK_DATA_RECEIVED). |
|
1063
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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|
1078 * EINVAL : A parameter is invalid. |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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|
1079 * ENOMEM : Not enough memory to complete the operation |
|
7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
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|
1080 */ |
|
1098
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|
1081 int fd_hook_register ( uint32_t type_mask, |
|
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1082 void (*fd_hook_cb)(enum fd_hook_type type, struct msg * msg, struct peer_hdr * peer, void * other, struct fd_hook_permsgdata *pmd, void * regdata), |
|
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|
1083 void *regdata, |
|
1069
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1084 struct fd_hook_data_hdl *data_hdl, |
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|
1085 struct fd_hook_hdl ** handler ); |
|
1063
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1086 |
|
7a7f63f6f135
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1087 /* Remove a hook registration */ |
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7a7f63f6f135
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1088 int fd_hook_unregister( struct fd_hook_hdl * handler ); |
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1089 |
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1090 |
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1069
544fa1be79a9
Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
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1091 /*============================================================*/ |
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1092 |
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Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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1093 /* |
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Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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1094 * The following allows an extension to retrieve stat information on the different fifo queues involved in the freeDiameter framework. |
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1095 * There are three global queues, plus per-peer queues. |
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Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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1096 * This information can be used to build SNMP-like data for example, or quickly get a status of the framework to find the loaded path of execution / bottlenecks. |
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Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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1097 */ |
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Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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1098 enum fd_stat_type { |
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7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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1099 /* For the following, no peer is associated with the stat */ |
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Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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1100 STAT_G_LOCAL= 1, /* Get statistics for the global queue of messages processed by local extensions */ |
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1101 STAT_G_INCOMING, /* Get statistics for the global queue of received messages to be processed by routing_in thread */ |
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Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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1102 STAT_G_OUTGOING, /* Get statistics for the global queue of messages to be processed by routing_out thread */ |
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Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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1103 |
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Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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1104 /* For the following, the peer must be provided */ |
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Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
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1105 STAT_P_PSM, /* Peer state machine queue (events to be processed for this peer, including received messages) */ |
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Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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1106 STAT_P_TOSEND, /* Queue of messages for sending to this peer */ |
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Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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1107 }; |
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7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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1108 |
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Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
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1109 /* |
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Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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1110 * FUNCTION: fd_stat_getstats |
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Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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1111 * |
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1112 * PARAMETERS: |
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7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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1113 * stat : Which queue is being queried |
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Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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1114 * peer : (depending on the stat parameter) which peer is being queried |
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1071
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1115 * current_count : (out) The number of items in the queue currently |
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1116 * limit_count : (out) The max number of items the queue accepts before becoming blocking -- 0 means no max. |
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1063
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1117 * highest_count : (out) The highest count the queue has reached since startup |
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1067
23989d6c8390
Add total count in the statistics of the queues, thanks for the feedback :)
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1118 * total_count : (out) Total number of items that this queue has processed (always growing, use deltas for monitoring) |
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1063
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Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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1119 * total : (out) Cumulated time all items spent in this queue, including blocking time (always growing, use deltas for monitoring) |
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1120 * blocking : (out) Cumulated time threads trying to post new items were blocked (queue full). |
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Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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1121 * last : (out) For the last element retrieved from the queue, how long it took between posting (including blocking) and poping |
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1122 * |
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1123 * DESCRIPTION: |
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Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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1124 * Get statistics information about a given queue. |
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Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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1125 * Any of the (out) parameters can be NULL if not requested. |
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1126 * |
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1127 * RETURN VALUE: |
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Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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1128 * 0 : The callback is registered. |
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7a7f63f6f135
Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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1129 * EINVAL : A parameter is invalid. |
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Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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1130 */ |
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Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
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1131 int fd_stat_getstats(enum fd_stat_type stat, struct peer_hdr * peer, |
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1071
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1132 int * current_count, int * limit_count, int * highest_count, long long * total_count, |
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1133 struct timespec * total, struct timespec * blocking, struct timespec * last); |
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Commit prototype of new functions for discussion. These will replace the fd_log_msg feature as well as several internal dumping routines. The dbg_monitoring will be totally rewritten. Comments welcome...
Sebastien Decugis <sdecugis@freediameter.net>
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1134 |
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Update the new API prototype to make it easier for extension to track messages between hooks, for e.g. timing computations
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1135 /*============================================================*/ |
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1136 /* EOF */ |
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1137 /*============================================================*/ |
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1138 |
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904
b839a1b1c1da
Make freeDiameter headers more C++ friendly -- thank you Thomas
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1139 #ifdef __cplusplus |
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1140 } |
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Make freeDiameter headers more C++ friendly -- thank you Thomas
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1141 #endif |
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Make freeDiameter headers more C++ friendly -- thank you Thomas
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1142 |
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658
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1143 #endif /* _LIBFDCORE_H */ |