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annotate extensions/radius_gw/sub_echo_drop.c @ 385:03b512313cc1

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Added code to handle sessions
author Sebastien Decugis <sdecugis@nict.go.jp>
date Thu, 28 May 2009 13:32:37 +0900
parents 98806d0e175f
children 540ed390c04f
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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 /* See sub_echo_drop.h for details */
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37
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38 #define DECLARE_API_POINTERS
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39 #include "sub_echo_drop.h"
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40
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41 int sub_echo_drop_verbosity = SUB_ECHO_DROP_VERBO;
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42
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43 /* Create the configuration and state structure */
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44 static struct rga_conf_state * sed_cs_create(char * conffile)
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45 {
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46 struct rga_conf_state * cs = NULL;
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47
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48 TRACE_ENTRY("%p", conffile);
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49
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50 if ( ! conffile ) {
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51 log_error("No configuration file specified for extension sub_echo_drop!\n");
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52 return NULL;
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53 }
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54
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55 /* Create a new storage for extension state */
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56 CHECK_MALLOC_DO( cs = malloc(sizeof(struct rga_conf_state)), return NULL );
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57 memset(cs, 0, sizeof(struct rga_conf_state));
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58
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59 rg_list_init(&cs->conf);
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60
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61 /* Initialize the session handler, to store "echo" attributes */
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62 CHECK_FCT_DO( sess_regext( &cs->sess_hdl ), { free(cs); return NULL; } );
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63
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64 /* Parse the configuration file with the yacc parser */
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65 cs->conffile = conffile;
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66 CHECK_FCT_DO( sed_conf_parse(cs), { sess_deregext(cs->sess_hdl); free(cs); return NULL; } );
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67
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68 TRACE_DEBUG(INFO, "Sub extension Echo/Drop initialized with configuration: '%s'", cs->conffile);
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69 if (TRACE_BOOL(FULL)) {
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70 struct rg_list * li;
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71
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72 for (li = cs->conf.next; li != &cs->conf; li = li->next) {
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73 struct sed_conf_item * sci = (struct sed_conf_item *)li;
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74 char * act = (sci->action == ACT_ECHO) ? "ECHO" : "DROP";
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75 if (sci->ext) {
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76 log_debug(" %s Code: %hhu, Vendor: %u, Ext-Type: %hu\n", act, sci->code, sci->vendor_id, sci->extype);
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77 continue;
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78 }
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79 if (sci->tlv) {
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80 log_debug(" %s Code: %hhu, Vendor: %u, Type: %hhu\n", act, sci->code, sci->vendor_id, sci->type);
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81 continue;
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82 }
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83 if (sci->vsa) {
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84 log_debug(" %s Code: %hhu, Vendor: %u\n", act, sci->code, sci->vendor_id);
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85 continue;
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86 }
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87 log_debug(" %s Code: %hhu\n", act, sci->code);
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88 }
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89 }
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90
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91 /* We're done */
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92 return cs;
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93 }
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94
374
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95 /* Destroy the state */
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96 static void sed_cs_destroy(struct rga_conf_state * cs)
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97 {
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98
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99 TRACE_ENTRY("%p", cs);
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100 CHECK_PARAMS_DO( cs, );
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101
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102 while (! rg_list_is_empty(&cs->conf) ) {
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103 struct rg_list * li = cs->conf.next;
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104 rg_list_unlink(li);
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105 free(li);
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106 }
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107
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108 CHECK_FCT_DO( sess_deregext( cs->sess_hdl ), );
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109
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110 free(cs);
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111 return;
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112 }
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113
374
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114 /* Destroy a list of attributes saved in a session */
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115 static void ssi_cleanup(void * ptr)
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116 {
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117 TRACE_ENTRY("%p", ptr);
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118 CHECK_PARAMS_DO( ptr , return );
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119
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120 struct rg_list *list = (struct rg_list *)ptr;
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121 while (! rg_list_is_empty(list) ) {
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122 struct sed_saved_item * ssi = (struct sed_saved_item *)(list->next);
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123 rg_list_unlink(&ssi->chain);
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124 free(ssi);
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125 }
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126 free(list);
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127 }
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128
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129 /* Handle attributes from a RADIUS request as specified in the configuration */
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130 static int sed_rad_req(struct rga_conf_state * cs, sess_id_t ** session, struct radius_msg * rad_req, struct radius_msg ** rad_ans, msg_t ** diam_fw, void * cli )
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131 {
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132 size_t *nattr_pos;
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133 size_t nattr_used = 0;
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parents: 373
diff changeset
134 int idx;
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
135
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
136 struct rg_list echo_list;
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
137 struct rg_list *li;
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
138
385
03b512313cc1 Added code to handle sessions
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 376
diff changeset
139 TRACE_ENTRY("%p %p %p %p %p %p", cs, session, rad_req, rad_ans, diam_fw, cli);
374
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
140 CHECK_PARAMS(cs && rad_req);
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
141
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
142 rg_list_init(&echo_list);
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
143
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
144 CHECK_MALLOC( nattr_pos = malloc(rad_req->attr_size * sizeof(size_t)) );
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
145
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
146 /* For each attribute in the original message */
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
147 for (idx = 0; idx < rad_req->attr_used; idx++) {
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
148 int action = 0;
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
149 struct radius_attr_hdr * attr = (struct radius_attr_hdr *)(rad_req->buf + rad_req->attr_pos[idx]);
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
150
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
151 /* Look if we have a matching attribute in our configuration */
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
152 for (li = cs->conf.next; li != &cs->conf; li = li->next) {
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
153 struct sed_conf_item * sci = (struct sed_conf_item *)li;
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
154 uint32_t vid;
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
155 unsigned char * ptr;
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
156
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
157 if (sci->code < attr->type)
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
158 continue;
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
159 if (sci->code > attr->type)
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
160 break;
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
161
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
162 /* matching code */
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
163
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
164 if (! sci->vsa) {
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
165 action = sci->action;
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
166 break;
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
167 }
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
168
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
169 if (attr->length < 8)
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
170 continue;
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parents: 373
diff changeset
171
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parents: 373
diff changeset
172 ptr = (unsigned char *)(attr + 1);
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
173 /* since attr is not aligned, we cannot access *(attr+1) directly */
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
174 memcpy(&vid, ptr, sizeof(uint32_t));
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
175
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
176 if (sci->vendor_id < ntohl(vid))
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
177 continue;
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
178 if (sci->vendor_id > ntohl(vid))
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
179 break;
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
180
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
181 /* Matching vendor */
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
182
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
183 if ( ! sci->tlv && ! sci->ext ) {
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
184 action = sci->action;
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
185 break;
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
186 }
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
187
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
188 if (attr->length < 10)
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
189 continue;
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
190
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
191 if (sci->tlv) {
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
192 struct radius_attr_vendor * tl = (struct radius_attr_vendor *)(ptr + sizeof(uint32_t));
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
193 if (tl->vendor_type == sci->type) {
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
194 action = sci->action;
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
195 break;
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
196 }
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Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
197 continue;
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
198 }
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
199
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
200 if (sci->ext) {
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
201 /* To be done */
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
202 ASSERT(0);
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
203 }
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
204 }
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
205
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
206 switch (action) {
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
207 case ACT_DROP:
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
208 TRACE_DEBUG(FULL, "Dropping attribute with code %hhd", attr->type);
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
209 break;
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
210
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
211 case ACT_ECHO:
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
212 {
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
213 struct sed_saved_item * sav = NULL;
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
214 TRACE_DEBUG(FULL, "Saving attribute with code %hhd", attr->type);
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
215 CHECK_MALLOC( sav = malloc(sizeof(struct sed_saved_item) + attr->length - sizeof(struct radius_attr_hdr)) );
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
216 rg_list_init(&sav->chain);
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
217 memcpy(&sav->attr, attr, attr->length);
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
218 rg_list_insert_before(&echo_list, &sav->chain);
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
219 }
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
220 break;
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
221
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
222 case 0: /* Attribute was not specified in the configuration */
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
223 default: /* unknown action value */
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
224 /* We just keep the attribute in the RADIUS message */
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
225 nattr_pos[nattr_used++] = rad_req->attr_pos[idx];
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
226 }
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
227 }
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
228
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
229 /* Save the echoed values in the session, if any */
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
230 if (!rg_list_is_empty(&echo_list)) {
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
231 CHECK_PARAMS(session && *session);
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
232 CHECK_MALLOC( li = malloc(sizeof(struct rg_list)) );
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
233 memcpy(li, &echo_list, sizeof(struct rg_list));
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
234
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
235 /* Check that we have no previous data stored for this session, for debug */
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
236 ASSERT( sess_data_dereg(*session, cs->sess_hdl, NULL) == ENOENT );
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
237
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
238 /* Save the list in the session */
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
239 CHECK_FCT( sess_data_reg(*session, cs->sess_hdl, li, ssi_cleanup) );
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
240 }
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
241
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
242 /* Finally update the radius message to remove all handled attributes */
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
243 free(rad_req->attr_pos);
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
244 rad_req->attr_pos = nattr_pos;
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
245 rad_req->attr_used = nattr_used;
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
246
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
247 return 0;
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
248 }
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
249
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
250 /* Process an answer: add back the ECHO attributes, if any */
385
03b512313cc1 Added code to handle sessions
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 376
diff changeset
251 static int sed_diam_ans(struct rga_conf_state * cs, sess_id_t ** session, msg_t ** diam_ans, struct radius_msg ** rad_fw, void * cli )
374
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
252 {
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
253 int ret;
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
254 struct rg_list * list = NULL;
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
255
385
03b512313cc1 Added code to handle sessions
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 376
diff changeset
256 TRACE_ENTRY("%p %p %p %p %p", cs, session, diam_ans, rad_fw, cli);
374
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
257 CHECK_PARAMS(cs);
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
258
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
259 /* If there is no session associated, just give up */
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
260 if (! session || ! *session) {
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
261 TRACE_DEBUG(FULL, "No session associated with the message, nothing to do here...");
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
262 return 0;
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
263 }
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
264
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
265 /* No try and retrieve any data from the session */
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
266 ret = sess_data_dereg( *session, cs->sess_hdl, (void *)&list );
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
267 if (ret == ENOENT) {
883330e610e1 Progress on the echo_drop sub extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents: 373
diff changeset
268 TRACE_DEBUG(FULL, "No data saved in the session, no attribute to add back");
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269 return 0;
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270 }
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271 CHECK_FCT(ret); /* Return if another error occurred */
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272
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273 /* From this point on, we have a list of attributes to add to the radius message */
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274
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275 CHECK_PARAMS( rad_fw );
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276 if ( *rad_fw == NULL ) {
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277 /* Will implement this when main extension is complete */
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278 ASSERT(0);
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279 return ENOTSUP;
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280 }
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281
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282 while (! rg_list_is_empty(list) ) {
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283 struct sed_saved_item * ssi = (struct sed_saved_item *)(list->next);
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284 struct radius_attr_hdr * rc;
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285
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286 rg_list_unlink(&ssi->chain);
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287
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288 TRACE_DEBUG(FULL, "Echo attribute in the RADIUS answer: type %hhu, len: %hhu", ssi->attr.type, ssi->attr.length);
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289
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290 /* Add this attribute in the RADIUS message */
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291 CHECK_MALLOC( radius_msg_add_attr(*rad_fw, ssi->attr.type, (unsigned char *)(ssi + 1), ssi->attr.length - sizeof(struct radius_attr_hdr)) );
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292
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293 free(ssi);
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294 }
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295 free(list);
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296
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297 return 0;
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298 }
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299
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300
373
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301
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302 int rga_register(int version, waaad_api_t * waaad_api, struct radius_gw_api * api)
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303 {
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304 TRACE_ENTRY("%d %p %p", version, waaad_api, api);
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305 CHECK_PARAMS( waaad_api && api );
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306
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307 if (version != RADIUS_GW_API_VER) {
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308 log_error("ABI version mismatch, please recompile this extension (%s)\n", __FILE__);
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309 return EINVAL;
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310 }
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311
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312 /* Required to use the waaad api from this sub-extension: */
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313 EXTENSION_API_INIT_INTERN( API_MODULE_ALL, "sub_echo_drop", waaad_api );
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314
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315 /* Initialize the radius_gw api callbacks */
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316 api->rga_conf_parse_cb = sed_cs_create;
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317 api->rga_conf_free_cb = sed_cs_destroy;
374
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318 api->rga_rad_req_cb = sed_rad_req;
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319 api->rga_diam_ans_cb = sed_diam_ans;
373
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320
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321 /* We're done, we must not initialize any state here since the extension must be re-entrant, but in sample_conf_parse */
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322 return 0;
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323 }
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