Mercurial > hg > freeDiameter
annotate freeDiameter/messages.c @ 66:dcbd5b5ee55c
Added handling for DWR/DWA
author | Sebastien Decugis <sdecugis@nict.go.jp> |
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date | Mon, 30 Nov 2009 17:28:22 +0900 |
parents | 0e2b57789361 |
children | a58f0757c06a |
rev | line source |
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1 /********************************************************************************************************* |
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2 * Software License Agreement (BSD License) * |
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3 * Author: Sebastien Decugis <sdecugis@nict.go.jp> * |
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4 * * |
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5 * Copyright (c) 2009, WIDE Project and NICT * |
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6 * All rights reserved. * |
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7 * * |
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8 * Redistribution and use of this software in source and binary forms, with or without modification, are * |
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9 * permitted provided that the following conditions are met: * |
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10 * * |
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11 * * Redistributions of source code must retain the above * |
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12 * copyright notice, this list of conditions and the * |
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13 * following disclaimer. * |
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14 * * |
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15 * * Redistributions in binary form must reproduce the above * |
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16 * copyright notice, this list of conditions and the * |
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17 * following disclaimer in the documentation and/or other * |
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18 * materials provided with the distribution. * |
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19 * * |
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20 * * Neither the name of the WIDE Project or NICT nor the * |
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21 * names of its contributors may be used to endorse or * |
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22 * promote products derived from this software without * |
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23 * specific prior written permission of WIDE Project and * |
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24 * NICT. * |
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25 * * |
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26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED * |
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27 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * |
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28 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR * |
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29 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * |
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30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * |
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31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR * |
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32 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * |
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33 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * |
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34 *********************************************************************************************************/ |
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35 |
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36 #include "fD.h" |
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37 |
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38 static struct dict_object * dict_avp_OH = NULL; /* Origin-Host */ |
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39 static struct dict_object * dict_avp_OR = NULL; /* Origin-Realm */ |
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40 static struct dict_object * dict_avp_EM = NULL; /* Error-Message */ |
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41 static struct dict_object * dict_avp_ERH = NULL; /* Error-Reporting-Host */ |
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42 static struct dict_object * dict_avp_FAVP= NULL; /* Failed-AVP */ |
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43 static struct dict_object * dict_avp_RC = NULL; /* Result-Code */ |
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44 struct dict_object * fd_dict_avp_OSI = NULL; /* Origin-State-Id */ |
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45 struct dict_object * fd_dict_cmd_CER = NULL; /* Capabilities-Exchange-Request */ |
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46 struct dict_object * fd_dict_cmd_DWR = NULL; /* Device-Watchdog-Request */ |
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47 struct dict_object * fd_dict_cmd_DPR = NULL; /* Disconnect-Peer-Request */ |
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48 |
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49 /* Resolve the dictionary objects */ |
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50 int fd_msg_init(void) |
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51 { |
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52 TRACE_ENTRY(""); |
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53 |
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54 /* Initialize the dictionary objects that we may use frequently */ |
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55 CHECK_FCT( fd_dict_search( fd_g_config->cnf_dict, DICT_AVP, AVP_BY_NAME, "Origin-Host", &dict_avp_OH , ENOENT) ); |
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56 CHECK_FCT( fd_dict_search( fd_g_config->cnf_dict, DICT_AVP, AVP_BY_NAME, "Origin-Realm", &dict_avp_OR , ENOENT) ); |
66
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57 CHECK_FCT( fd_dict_search( fd_g_config->cnf_dict, DICT_AVP, AVP_BY_NAME, "Origin-State-Id", &fd_dict_avp_OSI , ENOENT) ); |
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58 |
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59 CHECK_FCT( fd_dict_search( fd_g_config->cnf_dict, DICT_AVP, AVP_BY_NAME, "Result-Code", &dict_avp_RC , ENOENT) ); |
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60 CHECK_FCT( fd_dict_search( fd_g_config->cnf_dict, DICT_AVP, AVP_BY_NAME, "Error-Message", &dict_avp_EM , ENOENT) ); |
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61 CHECK_FCT( fd_dict_search( fd_g_config->cnf_dict, DICT_AVP, AVP_BY_NAME, "Error-Reporting-Host", &dict_avp_ERH , ENOENT) ); |
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62 CHECK_FCT( fd_dict_search( fd_g_config->cnf_dict, DICT_AVP, AVP_BY_NAME, "Failed-AVP", &dict_avp_FAVP, ENOENT) ); |
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63 |
66
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64 CHECK_FCT( fd_dict_search ( fd_g_config->cnf_dict, DICT_COMMAND, CMD_BY_NAME, "Capabilities-Exchange-Request", &fd_dict_cmd_CER, ENOENT ) ); |
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65 CHECK_FCT( fd_dict_search ( fd_g_config->cnf_dict, DICT_COMMAND, CMD_BY_NAME, "Device-Watchdog-Request", &fd_dict_cmd_DWR, ENOENT ) ); |
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66 CHECK_FCT( fd_dict_search ( fd_g_config->cnf_dict, DICT_COMMAND, CMD_BY_NAME, "Disconnect-Peer-Request", &fd_dict_cmd_DPR, ENOENT ) ); |
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67 |
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68 |
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69 return 0; |
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70 } |
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71 |
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72 /* Add Origin-Host, Origin-Realm, Origin-State-Id AVPS at the end of the message */ |
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73 int fd_msg_add_origin ( struct msg * msg, int osi ) |
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74 { |
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75 union avp_value val; |
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76 struct avp * avp_OH = NULL; |
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77 struct avp * avp_OR = NULL; |
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78 struct avp * avp_OSI = NULL; |
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79 |
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80 TRACE_ENTRY("%p", msg); |
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81 CHECK_PARAMS( msg ); |
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82 |
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83 /* Create the Origin-Host AVP */ |
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84 CHECK_FCT( fd_msg_avp_new( dict_avp_OH, 0, &avp_OH ) ); |
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85 |
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86 /* Set its value */ |
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87 memset(&val, 0, sizeof(val)); |
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88 val.os.data = (unsigned char *)fd_g_config->cnf_diamid; |
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89 val.os.len = fd_g_config->cnf_diamid_len; |
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90 CHECK_FCT( fd_msg_avp_setvalue( avp_OH, &val ) ); |
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91 |
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92 /* Add it to the message */ |
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93 CHECK_FCT( fd_msg_avp_add( msg, MSG_BRW_LAST_CHILD, avp_OH ) ); |
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94 |
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95 |
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96 /* Create the Origin-Realm AVP */ |
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97 CHECK_FCT( fd_msg_avp_new( dict_avp_OR, 0, &avp_OR ) ); |
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98 |
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99 /* Set its value */ |
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100 memset(&val, 0, sizeof(val)); |
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101 val.os.data = (unsigned char *)fd_g_config->cnf_diamrlm; |
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102 val.os.len = fd_g_config->cnf_diamrlm_len; |
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103 CHECK_FCT( fd_msg_avp_setvalue( avp_OR, &val ) ); |
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104 |
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105 /* Add it to the message */ |
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106 CHECK_FCT( fd_msg_avp_add( msg, MSG_BRW_LAST_CHILD, avp_OR ) ); |
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107 |
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108 if (osi) { |
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109 /* Create the Origin-State-Id AVP */ |
66
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110 CHECK_FCT( fd_msg_avp_new( fd_dict_avp_OSI, 0, &avp_OSI ) ); |
10
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111 |
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112 /* Set its value */ |
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113 memset(&val, 0, sizeof(val)); |
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114 val.u32 = fd_g_config->cnf_orstateid; |
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115 CHECK_FCT( fd_msg_avp_setvalue( avp_OSI, &val ) ); |
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116 |
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117 /* Add it to the message */ |
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118 CHECK_FCT( fd_msg_avp_add( msg, MSG_BRW_LAST_CHILD, avp_OSI ) ); |
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119 } |
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120 |
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121 return 0; |
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122 } |
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123 |
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124 /* Add Result-Code and eventually Failed-AVP, Error-Message and Error-Reporting-Host AVPs */ |
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125 int fd_msg_rescode_set( struct msg * msg, char * rescode, char * errormsg, struct avp * optavp, int type_id ) |
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126 { |
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127 union avp_value val; |
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128 struct avp * avp_RC = NULL; |
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129 struct avp * avp_EM = NULL; |
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130 struct avp * avp_ERH = NULL; |
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131 struct avp * avp_FAVP= NULL; |
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132 uint32_t rc_val = 0; |
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133 int set_e_bit=0; |
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134 int std_err_msg=0; |
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135 |
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136 TRACE_ENTRY("%p %s %p %p %d", msg, rescode, errormsg, optavp, type_id); |
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137 |
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138 CHECK_PARAMS( msg && rescode ); |
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139 |
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140 /* Find the enum value corresponding to the rescode string, this will give the class of error */ |
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141 { |
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142 struct dict_object * enum_obj = NULL; |
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143 struct dict_enumval_request req; |
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144 memset(&req, 0, sizeof(struct dict_enumval_request)); |
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145 |
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146 /* First, get the enumerated type of the Result-Code AVP */ |
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147 CHECK_FCT( fd_dict_search( fd_g_config->cnf_dict, DICT_TYPE, TYPE_OF_AVP, dict_avp_RC, &(req.type_obj), ENOENT ) ); |
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148 |
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149 /* Now search for the value given as parameter */ |
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150 req.search.enum_name = rescode; |
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151 CHECK_FCT( fd_dict_search( fd_g_config->cnf_dict, DICT_ENUMVAL, ENUMVAL_BY_STRUCT, &req, &enum_obj, ENOTSUP) ); |
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152 |
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153 /* finally retrieve its data */ |
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154 CHECK_FCT_DO( fd_dict_getval( enum_obj, &(req.search) ), return EINVAL ); |
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155 |
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156 /* copy the found value, we're done */ |
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157 rc_val = req.search.enum_value.u32; |
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158 } |
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159 |
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160 if (type_id == 1) { |
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161 /* Add the Origin-Host and Origin-Realm AVP */ |
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162 CHECK_FCT( fd_msg_add_origin ( msg, 0 ) ); |
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163 } |
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164 |
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165 /* Create the Result-Code AVP */ |
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166 CHECK_FCT( fd_msg_avp_new( dict_avp_RC, 0, &avp_RC ) ); |
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167 |
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168 /* Set its value */ |
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169 memset(&val, 0, sizeof(val)); |
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170 val.u32 = rc_val; |
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171 CHECK_FCT( fd_msg_avp_setvalue( avp_RC, &val ) ); |
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172 |
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173 /* Add it to the message */ |
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174 CHECK_FCT( fd_msg_avp_add( msg, MSG_BRW_LAST_CHILD, avp_RC ) ); |
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175 |
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176 if (type_id == 2) { |
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177 /* Add the Error-Reporting-Host AVP */ |
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178 |
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179 CHECK_FCT( fd_msg_avp_new( dict_avp_ERH, 0, &avp_ERH ) ); |
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180 |
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181 /* Set its value */ |
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182 memset(&val, 0, sizeof(val)); |
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183 val.os.data = (unsigned char *)fd_g_config->cnf_diamid; |
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184 val.os.len = fd_g_config->cnf_diamid_len; |
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185 CHECK_FCT( fd_msg_avp_setvalue( avp_ERH, &val ) ); |
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186 |
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187 /* Add it to the message */ |
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188 CHECK_FCT( fd_msg_avp_add( msg, MSG_BRW_LAST_CHILD, avp_ERH ) ); |
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189 |
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190 } |
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191 |
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192 /* Now add the optavp in a FailedAVP if provided */ |
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193 if (optavp) { |
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194 /* Create the Failed-AVP AVP */ |
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195 CHECK_FCT( fd_msg_avp_new( dict_avp_FAVP, 0, &avp_FAVP ) ); |
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196 |
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197 /* Add the passed AVP inside it */ |
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198 CHECK_FCT( fd_msg_avp_add( avp_FAVP, MSG_BRW_LAST_CHILD, optavp ) ); |
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199 |
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200 /* And add to the message */ |
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201 CHECK_FCT( fd_msg_avp_add( msg, MSG_BRW_LAST_CHILD, avp_FAVP ) ); |
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202 } |
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203 |
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204 |
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205 /* Deal with the 'E' bit and the error message */ |
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206 switch (rc_val / 1000) { |
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207 case 1: /* Informational */ |
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208 case 2: /* Success */ |
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209 /* Nothing special here: no E bit, no error message unless one is specified */ |
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210 break; |
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211 |
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212 case 3: /* Protocol Errors */ |
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213 set_e_bit = 1; |
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214 std_err_msg = 1; |
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215 break; |
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216 |
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217 case 4: /* Transcient Failure */ |
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218 case 5: /* Permanent Failure */ |
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219 default: |
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220 std_err_msg = 1; |
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221 break; |
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222 |
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223 } |
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224 |
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225 { |
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226 struct msg_hdr * hdr = NULL; |
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227 |
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228 CHECK_FCT( fd_msg_hdr( msg, &hdr ) ); |
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229 |
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230 if (set_e_bit) |
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231 hdr->msg_flags |= CMD_FLAG_ERROR; |
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232 else |
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233 hdr->msg_flags &= ! CMD_FLAG_ERROR; |
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234 } |
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235 |
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236 if (std_err_msg || errormsg) { |
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237 /* Add the Error-Message AVP */ |
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238 |
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239 CHECK_FCT( fd_msg_avp_new( dict_avp_EM, 0, &avp_EM ) ); |
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240 |
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241 /* Set its value */ |
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242 memset(&val, 0, sizeof(val)); |
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243 |
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244 if (errormsg) { |
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245 val.os.data = (unsigned char *)errormsg; |
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246 val.os.len = strlen(errormsg); |
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247 } else { |
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248 val.os.data = (unsigned char *)rescode; |
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249 val.os.len = strlen(rescode); |
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250 } |
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251 CHECK_FCT( fd_msg_avp_setvalue( avp_EM, &val ) ); |
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252 |
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253 /* Add it to the message */ |
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254 CHECK_FCT( fd_msg_avp_add( msg, MSG_BRW_LAST_CHILD, avp_EM ) ); |
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255 } |
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256 |
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257 return 0; |
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258 } |
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259 |
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260 /* Send a message and optionaly register a callback for an answer */ |
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261 int fd_msg_send ( struct msg ** pmsg, void (*anscb)(void *, struct msg **), void * data ) |
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262 { |
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263 TRACE_ENTRY("%p %p %p", pmsg, anscb, data); |
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264 CHECK_PARAMS( pmsg ); |
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265 |
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266 /* Save the callback in the message */ |
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267 CHECK_FCT( fd_msg_anscb_associate( *pmsg, anscb, data ) ); |
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268 |
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269 /* Post the message in the outgoing queue */ |
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270 CHECK_FCT( fd_fifo_post(fd_g_outgoing, pmsg) ); |
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271 |
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272 return 0; |
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273 } |
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274 |
34
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275 /* Parse a message against our dictionary, and in case of error log and eventually build the error reply -- returns the parsing status */ |
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276 int fd_msg_parse_or_error( struct msg ** msg ) |
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277 { |
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278 int ret = 0; |
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279 struct msg * m; |
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280 struct msg_hdr * hdr = NULL; |
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281 struct fd_pei pei; |
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282 |
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283 TRACE_ENTRY("%p", msg); |
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284 |
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285 CHECK_PARAMS(msg && *msg); |
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286 m = *msg; |
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287 |
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288 /* Parse the message against our dictionary */ |
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289 ret = fd_msg_parse_rules ( m, fd_g_config->cnf_dict, &pei); |
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290 if (ret != EBADMSG) |
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291 return ret; |
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292 |
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293 fd_log_debug("The following message does not comply to the dictionary and rules (%s):\n", pei.pei_errcode); |
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294 fd_msg_dump_walk(NONE, m); |
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295 |
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296 /* Now create an answer error if the message is a query */ |
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297 CHECK_FCT( fd_msg_hdr(m, &hdr) ); |
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298 |
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299 if (hdr->msg_flags & CMD_FLAG_REQUEST) { |
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300 |
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301 /* Create the error message */ |
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302 CHECK_FCT( fd_msg_new_answer_from_req ( fd_g_config->cnf_dict, msg, pei.pei_protoerr ? MSGFL_ANSW_ERROR : 0 ) ); |
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303 |
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304 /* Set the error code */ |
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305 CHECK_FCT( fd_msg_rescode_set(*msg, pei.pei_errcode, pei.pei_message, pei.pei_avp, 1 ) ); |
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306 |
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307 } else { |
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308 /* Just discard */ |
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309 CHECK_FCT( fd_msg_free( m ) ); |
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310 *msg = NULL; |
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311 } |
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312 |
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313 return ret; |
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314 } |