1 | /*
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2 | * Copyright (c) 2004-2011 by Internet Systems Consortium, Inc. ("ISC")
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3 | * Copyright (c) 1995-2003 by Internet Software Consortium
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4 | *
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5 | * Permission to use, copy, modify, and distribute this software for any
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6 | * purpose with or without fee is hereby granted, provided that the above
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7 | * copyright notice and this permission notice appear in all copies.
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8 | *
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9 | * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
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10 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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11 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
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12 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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13 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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14 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
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15 | * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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16 | *
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17 | * Internet Systems Consortium, Inc.
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18 | * 950 Charter Street
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19 | * Redwood City, CA 94063
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20 | * <info@isc.org>
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21 | * https://www.isc.org/
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22 | *
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23 | * This code is based on the original client state machine that was
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24 | * written by Elliot Poger. The code has been extensively hacked on
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25 | * by Ted Lemon since then, so any mistakes you find are probably his
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26 | * fault and not Elliot's.
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27 | */
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28 | /*
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29 | * WIDE Project DHCP Implementation
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30 | * Copyright (c) 1995-1997 Akihiro Tominaga
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31 | * Copyright (c) 1995-1997 WIDE Project
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32 | * All rights reserved.
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33 | *
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34 | * Permission to use, copy, modify and distribute this software and its
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35 | * documentation is hereby granted, provided the following conditions
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36 | * are satisfied,
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37 | *
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38 | * 1. Both the copyright notice and this permission notice appear in
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39 | * all copies of the software, derivative works or modified versions,
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40 | * and any portions thereof, and that both notices appear in
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41 | * supporting documentation.
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42 | * 2. All advertising materials mentioning features or use of this software
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43 | * must display the following acknowledgement:
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44 | * This product includes software developed by WIDE Project and
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45 | * its contributors.
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46 | * 3. Neither the name of WIDE Project nor the names of its contributors
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47 | * may be used to endorse or promote products derived from this software
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48 | * without specific prior written permission.
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49 | *
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50 | * THIS SOFTWARE IS PROVIDED BY THE DEVELOPER ``AS IS'' AND WIDE
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51 | * PROJECT DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES
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52 | * WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. ALSO, THERE
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53 | * IS NO WARRANTY IMPLIED OR OTHERWISE, NOR IS SUPPORT PROVIDED.
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54 | *
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55 | * Feedback of the results generated from any improvements or
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56 | * extensions made to this software would be much appreciated.
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57 | * Any such feedback should be sent to:
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58 | *
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59 | * Akihiro Tominaga
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60 | * WIDE Project
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61 | * Keio University, Endo 5322, Kanagawa, Japan
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62 | * (E-mail: dhcp-dist@wide.ad.jp)
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63 | *
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64 | * WIDE project has the rights to redistribute these changes.
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65 | */
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66 | /*
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67 | * TINET (TCP/IP Protocol Stack)
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68 | *
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69 | * Copyright (C) 2011 by Dep. of Computer Science and Engineering
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70 | * Tomakomai National College of Technology, JAPAN
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71 | *
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72 | * ä¸è¨èä½æ¨©è
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73 | ã¯ï¼ä»¥ä¸ã® (1)ï½(4) ã®æ¡ä»¶ãï¼Free Software Foundation
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74 | * ã«ãã£ã¦å
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75 | ¬è¡¨ããã¦ãã GNU General Public License ã® Version 2 ã«è¨
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76 | * è¿°ããã¦ããæ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§ã¢ï¼æ¬ã½ããã¦ã§ã¢
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77 | * ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹å¤ã»åé
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78 | å¸ï¼ä»¥ä¸ï¼
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79 | * å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
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80 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
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81 | * 権表示ï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãï¼ãã®ã¾ã¾ã®å½¢ã§ã½ã¼
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82 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
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83 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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84 | * ç¨ã§ããå½¢ã§åé
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85 | å¸ããå ´åã«ã¯ï¼åé
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86 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
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87 | * è
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88 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
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89 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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90 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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91 | * ç¨ã§ããªãå½¢ã§åé
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92 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®ããããã®æ¡ä»¶ãæºããã
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93 | * ã¨ï¼
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94 | * (a) åé
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95 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
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96 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
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97 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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98 | * (b) åé
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99 | å¸ã®å½¢æ
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100 | ãï¼å¥ã«å®ããæ¹æ³ã«ãã£ã¦ï¼TOPPERSããã¸ã§ã¯ãã«
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101 | * å ±åãããã¨ï¼
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102 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
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103 | * 害ãããï¼ä¸è¨èä½æ¨©è
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104 | ããã³TOPPERSããã¸ã§ã¯ããå
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105 | 責ãããã¨ï¼
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106 | *
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107 | * æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
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108 | ã
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109 | * ãã³TOPPERSããã¸ã§ã¯ãã¯ï¼æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ãã®é©ç¨å¯è½æ§ã
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110 | * å«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´
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111 | * æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ãã®è²¬ä»»ãè² ããªãï¼
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112 | *
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113 | * @(#) $Id$
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114 | */
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115 |
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116 | #include <string.h>
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117 |
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118 | #ifdef TARGET_KERNEL_ASP
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119 |
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120 | #include <kernel.h>
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121 | #include <sil.h>
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122 | #include <t_syslog.h>
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123 | #include "kernel_cfg.h"
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124 |
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125 | #endif /* of #ifdef TARGET_KERNEL_ASP */
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126 |
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127 | #ifdef TARGET_KERNEL_JSP
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128 |
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129 | #include <s_services.h>
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130 | #include <t_services.h>
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131 | #include "kernel_id.h"
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132 |
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133 | #endif /* of #ifdef TARGET_KERNEL_JSP */
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134 |
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135 | #include <tinet_defs.h>
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136 | #include <tinet_config.h>
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137 |
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138 | #include <net/if.h>
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139 | #include <net/ethernet.h>
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140 | #include <net/net.h>
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141 | #include <net/net_endian.h>
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142 | #include <net/net_var.h>
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143 | #include <net/net_timer.h>
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144 |
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145 | #include <netinet/in.h>
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146 | #include <netinet/in_var.h>
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147 | #include <netinet/in_itron.h>
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148 |
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149 | #include <net/if_var.h>
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150 |
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151 | #include <netapp/netapp.h>
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152 | #include <netapp/netapp_var.h>
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153 | #include <netapp/dhcp6_cli.h>
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154 | #include <netapp/dhcp6_cli_var.h>
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155 | #include <netapp/resolver.h>
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156 |
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157 | /*
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158 | * DHCPv6 ã¯ã©ã¤ã¢ã³ãã¿ã¹ã¯
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159 | */
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160 |
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161 | #ifdef DHCP6_CLI_CFG
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162 |
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163 | /*
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164 | * DHCP åä½ã¢ã¼ã
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165 | *
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166 | * #define DHCP6_CLI_CFG_MODE ã§æå®ããã
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167 | *
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168 | */
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169 |
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170 | #if !defined(DHCP6_CLI_CFG_MODE)
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171 | #define DHCP6_CLI_CFG_MODE DHCP6_CLI_CFG_MODE_DEFAULT
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172 | #endif
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173 |
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174 | /*
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175 | * å¤æ°
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176 | */
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177 |
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178 | static const T_IN6_ADDR in6_addr_all_DHCP_relay_servers =
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179 | IPV6_ADDR_ALL_DHCP_RELAY_SERVERS_INIT; /* ãªã¬ã¼ã»ãµã¼ãã® IPv6 ã¢ãã¬ã¹ */
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180 | static T_DHCP6_CLI_CONTEXT context; /* ã¯ã©ã¤ã¢ã³ãã³ã³ããã¹ã */
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181 |
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182 | #ifdef DHCP6_CLI_CFG_REQUIRED_OLIST
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183 | static uint8_t required_plist[] = DHCP6_CLI_CFG_REQUIRED_OLIST; /* å¿
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184 | é ãªãã·ã§ã³ãªã¹ã */
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185 | #endif
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186 |
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187 | #ifdef DHCP6_CLI_CFG_REQUEST_OLIST
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188 | static uint8_t request_plist[] = DHCP6_CLI_CFG_REQUEST_OLIST; /* è¦æ±ãªãã·ã§ã³ãªã¹ã */
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189 | #endif
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190 |
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191 | /*
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192 | * dhcp6_rand -- RFC3315 ã«è¦å®ãããä¹±æ°ãçºçããã
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193 | */
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194 |
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195 | static int32_t
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196 | dhcp6_rand (SYSTIM base)
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197 | {
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198 | SYSTIM range, split;
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199 | uint32_t rval;
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200 |
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201 | split = (base - 1) / 10;
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202 | if (split == 0)
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203 | return 0;
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204 | range = (split * 2) + 10;
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205 | rval = netapp_rand() % range - split;
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206 |
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207 | return rval;
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208 | }
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209 |
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210 | /*
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211 | * init_duid -- ã¯ã©ã¤ã¢ã³ãã® DUID ãè¨å®ããã
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212 | */
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213 |
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214 | static void
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215 | init_duid (T_DHCP6_CLI_CONTEXT *ct)
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216 | {
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217 |
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218 | #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATELESS
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219 |
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220 | /* åä½ã¢ã¼ãã« STATELESS ãæå®ãããæ㯠LL å½¢å¼ã«ããã*/
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221 |
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222 | T_DHCP6_DUID_LL_HDR *ll;
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223 |
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224 | ll = (T_DHCP6_DUID_LL_HDR*)&ct->duid[0];
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225 | HOST2MSG16(ll->code, DUID_LL);
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226 | HOST2MSG16(ll->type, DHCP6_HWA_TYPE_ETHER);
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227 | memcpy(&ct->duid[sizeof(*ll)], &ct->sc->ifaddr.lladdr, sizeof(ct->sc->ifaddr.lladdr));
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228 | ct->duid_len = sizeof(*ll) + sizeof(ct->sc->ifaddr.lladdr); /* DIUD é·ãè¨é²ããã*/
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229 |
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230 | #elif DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATEFULL
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231 |
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232 | /*
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233 | * åä½ã¢ã¼ãã« DHCP6_CLI_CFG_STATEFULL ãæå®ãããæ㯠LLT å½¢å¼ã«ããã
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234 | * time ã¡ã³ãã¼ã«ã¯ç¾å¨ã®æé[s]ãè¨å®ããã
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235 | * 注æ: æ«å®çã« get_tim() ã®å¤ã使ãããè¦æ¤è¨
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236 | */
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237 |
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238 | T_DHCP6_DUID_LLT_HDR *llt;
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239 | SYSTIM time;
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240 |
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241 | get_tim(&time);
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242 | time = SYSTIM2SEC(time) - DUID_TIME_EPOCH;
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243 | llt = (T_DHCP6_DUID_LLT_HDR*)&ct->duid[0];
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244 | HOST2MSG16(llt->code, DUID_LLT);
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245 | HOST2MSG16(llt->type, DHCP6_HWA_TYPE_ETHER);
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246 | HOST2MSG32(llt->time, time);
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247 | memcpy(&ct->duid[sizeof(*llt)], &ct->sc->ifaddr.lladdr, sizeof(ct->sc->ifaddr.lladdr));
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248 | ct->duid_len = sizeof(*llt) + sizeof(ct->sc->ifaddr.lladdr); /* DIUD é·ãè¨é²ããã*/
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249 |
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250 | #else /* of #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATELESS */
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251 |
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252 | #endif /* of #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATELESS */
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253 |
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254 | }
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255 |
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256 | /*
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257 | * cancel_all_timers -- å
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258 | ¨ã¦ã® TIMER ããã£ã³ã»ã«ããã
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259 | */
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260 |
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261 | static void
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262 | cancel_all_timers (T_DHCP6_CLI_CONTEXT *ct)
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263 | {
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264 | int ix;
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265 |
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266 | syscall(wai_sem(SEM_DHCP6_CLI_TIMER));
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267 | for (ix = NUM_DHCP6C_TIMERS; ix -- > 0; )
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268 | ct->timers[ix] = 0;
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269 | syscall(sig_sem(SEM_DHCP6_CLI_TIMER));
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270 | }
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271 |
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272 | /*
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273 | * dhcpc_timer -- TIMER 管ç
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274 | */
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275 |
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276 | static void
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277 | dhcpc_timer (T_DHCP6_CLI_CONTEXT *ct)
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278 | {
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279 | int ix;
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280 |
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281 | syscall(wai_sem(SEM_DHCP6_CLI_TIMER));
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282 | for (ix = NUM_DHCP6C_TIMERS; ix -- > 0; ) {
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283 | if (ct->timers[ix] != 0) {
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284 | ct->timers[ix] --;
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285 | if (ct->timers[ix] == 0) {
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286 | ct->flags = (ct->flags & ~DHCP6C_FLAG_TMOUT_MASK) | DHCP6C_FLAG_TMOUT_TIMER | ix;
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287 | syscall(sig_sem(SEM_DHCP6_CLI_READY));
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288 | }
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289 | }
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290 | }
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291 | syscall(sig_sem(SEM_DHCP6_CLI_TIMER));
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292 |
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293 | /* 1ç§æ¯ã«ã¿ã¤ã ã¢ã¦ãããã*/
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294 | timeout((callout_func)dhcpc_timer, ct, NET_TIMER_HZ / DHCP6C_TIMER_HZ);
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295 | }
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296 |
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297 | /*
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298 | * find_option -- æå®ãããªãã·ã§ã³ãæ¢ç´¢ããã
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299 | *
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300 | * 注æ: å¼æ° len ã 0 ã®æã¯ãªãã·ã§ã³ãµã¤ãºãæ¤è¨¼ããªãã
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301 | * å¼æ° len ã«ã¯ãªãã·ã§ã³å
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302 | ¨ä½ã®ãµã¤ãºãæå®ãããã¨ã
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303 | */
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304 |
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305 | static uint8_t *
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306 | find_option (uint8_t *msg, uint_t msg_len, uint_t code, uint_t len)
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307 | {
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308 | T_DHCP6_OPTION *hdr;
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309 | uint8_t *last;
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310 |
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311 | last = msg + msg_len;
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312 | while (msg < last) {
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313 | hdr = (T_DHCP6_OPTION*)msg;
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314 | if (MSG2HOST16(hdr->code) == code && (len == 0 || (MSG2HOST16(hdr->len) + sizeof(*hdr)) == len))
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315 | return msg;
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316 | else
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317 | msg += MSG2HOST16(hdr->len) + sizeof(*hdr);
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318 | }
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319 | return NULL;
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320 | }
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321 |
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322 | /*
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323 | * find_msg_option -- æå®ãããªãã·ã§ã³ãæ¢ç´¢ããã
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324 | *
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325 | * 注æ: å¼æ° len ã 0 ã®æã¯ãªãã·ã§ã³ãµã¤ãºãæ¤è¨¼ããªãã
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326 | * å¼æ° len ã«ã¯ãªãã·ã§ã³å
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327 | ¨ä½ã®ãµã¤ãºãæå®ãããã¨ã
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328 | */
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329 |
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330 | static uint8_t *
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331 | find_msg_option (T_DHCP6_CLI_MSG *cli_msg, uint_t code, uint_t len)
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332 | {
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333 | return find_option(cli_msg->msg.options, cli_msg->len, code, len);
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334 | }
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335 |
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336 | /*
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337 | * is_equal_sid -- ã¡ãã»ã¼ã¸å
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338 | ã® SERVER ID ãæ¯è¼ããã
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339 | */
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340 |
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341 | static bool_t
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342 | is_equal_sid (T_DHCP6_CLI_MSG *msg1, T_DHCP6_CLI_MSG *msg2)
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343 | {
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344 | T_DHCP6_OPT_SERVERID *sid1;
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345 | T_DHCP6_OPT_SERVERID *sid2;
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346 |
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347 | if ((sid1 = (T_DHCP6_OPT_SERVERID*)find_msg_option(msg1, DHCP6_OPT_SERVERID, 0)) == NULL)
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348 | return false;
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349 | if ((sid2 = (T_DHCP6_OPT_SERVERID*)find_msg_option(msg2, DHCP6_OPT_SERVERID, 0)) == NULL)
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350 | return false;
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351 | if (MSG2HOST16(sid1->len) != MSG2HOST16(sid2->len))
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352 | return false;
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353 |
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354 | return memcmp((uint8_t*)sid1 + sizeof(*sid1),
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355 | (uint8_t*)sid2 + sizeof(*sid2), MSG2HOST16(sid1->len)) == 0;
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356 | }
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357 |
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358 | /*
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359 | * validate_iaaddrs -- ã¢ãã¬ã¹æ
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360 | å ±ï¼IAADDRï¼ãæ¤è¨¼ããã
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361 | */
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362 |
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363 | static ER
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364 | validate_iaaddrs (uint8_t *opt, uint_t len)
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365 | {
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366 | T_DHCP6_OPT_IAADDR *iaa;
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367 |
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368 | /* ãªãã·ã§ã³ã IAADDR ã§ãããã¨ãæ¤è¨¼ããã*/
|
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369 | iaa = (T_DHCP6_OPT_IAADDR*)opt;
|
---|
370 | if (MSG2HOST16(iaa->code) != DHCP6_OPT_IAADDR)
|
---|
371 | return E_PAR;
|
---|
372 |
|
---|
373 | while (len > 0) {
|
---|
374 | /* ãªãã·ã§ã³é·ãæ¤è¨¼ããã*/
|
---|
375 | if (len < sizeof(*iaa))
|
---|
376 | return E_PAR;
|
---|
377 |
|
---|
378 | /* ãªãã·ã§ã³é·ã T_DHCP6_OPT_IAADDR ã®ãµã¤ãºã¨ä¸è´ãã¦ããªããã°ã¨ã©ã¼ */
|
---|
379 | iaa = (T_DHCP6_OPT_IAADDR*)opt;
|
---|
380 | if ((MSG2HOST16(iaa->len) & ~DHCP6C_IAA_FLAG_MASK) < (sizeof(*iaa) - sizeof(T_DHCP6_OPTION)))
|
---|
381 | return E_PAR;
|
---|
382 |
|
---|
383 | /*
|
---|
384 | * perferred-lifetime 㨠valid-lifetime ã®å¤ãçç¾ãã¦ããã¨ãã¯ã¨ã©ã¼
|
---|
385 | * ãRFC3315 (22.6) åç
|
---|
386 | §ã
|
---|
387 | */
|
---|
388 | if (MSG2HOST32(iaa->prefer) > MSG2HOST32(iaa->valid))
|
---|
389 | return E_PAR;
|
---|
390 |
|
---|
391 | len -= (MSG2HOST16(iaa->len) & ~DHCP6C_IAA_FLAG_MASK) + sizeof(T_DHCP6_OPTION);
|
---|
392 | opt += (MSG2HOST16(iaa->len) & ~DHCP6C_IAA_FLAG_MASK) + sizeof(T_DHCP6_OPTION);
|
---|
393 | }
|
---|
394 |
|
---|
395 | return E_OK;
|
---|
396 | }
|
---|
397 |
|
---|
398 | /*
|
---|
399 | * validate_ia_na_pd -- IA_NA/IA_PD ãªãã·ã§ã³ãæ¤è¨¼ããã
|
---|
400 | */
|
---|
401 |
|
---|
402 | static ER
|
---|
403 | validate_ia_na_pd (T_DHCP6_CLI_MSG *msg, uint16_t code)
|
---|
404 | {
|
---|
405 | T_DHCP6_OPT_IA_NA_PD *na;
|
---|
406 | uint8_t *opt;
|
---|
407 |
|
---|
408 | /* IA_NA/IA_PD ãç¡ããã°æ¤è¨¼ããªãã*/
|
---|
409 | if ((opt = find_msg_option(msg, code, 0)) == NULL)
|
---|
410 | return E_OK;
|
---|
411 |
|
---|
412 | /* ãªãã·ã§ã³é·ãæ¤è¨¼ããã*/
|
---|
413 | na = (T_DHCP6_OPT_IA_NA_PD*)opt;
|
---|
414 | if (!(msg->len >= (opt - (uint8_t*)&msg->msg) + sizeof(*na) &&
|
---|
415 | (MSG2HOST16(na->len) & ~DHCP6C_IAA_FLAG_MASK) >= sizeof(*na)))
|
---|
416 | return E_PAR;
|
---|
417 |
|
---|
418 | /*
|
---|
419 | * T1 㨠T2 ã®å¤ãçç¾ãã¦ããæãã¾ãã¯ã¢ãã¬ã¹æ
|
---|
420 | å ±ã誤ã£ã¦ããæã¯ã¨ã©ã¼
|
---|
421 | * ãRFC3315 (22.4) åç
|
---|
422 | §ã
|
---|
423 | */
|
---|
424 | if (MSG2HOST32(na->renew) > 0 && MSG2HOST32(na->rebind) > 0 &&
|
---|
425 | MSG2HOST32(na->renew) > MSG2HOST32(na->rebind))
|
---|
426 | return E_PAR;
|
---|
427 |
|
---|
428 | if (validate_iaaddrs(opt + sizeof(*na), (MSG2HOST16(na->len) & ~DHCP6C_IAA_FLAG_MASK) - (sizeof(*na) - sizeof(T_DHCP6_OPTION))) != E_OK)
|
---|
429 | return E_PAR;
|
---|
430 |
|
---|
431 | return E_OK;
|
---|
432 | }
|
---|
433 |
|
---|
434 | /*
|
---|
435 | * validate_ia_ta -- IA_TA ãªãã·ã§ã³ãæ¤è¨¼ããã
|
---|
436 | */
|
---|
437 |
|
---|
438 | static ER
|
---|
439 | validate_ia_ta (T_DHCP6_CLI_MSG *msg)
|
---|
440 | {
|
---|
441 | T_DHCP6_OPT_IA_TA *ta;
|
---|
442 | uint8_t *opt;
|
---|
443 |
|
---|
444 | /* IA_TA ãç¡ããã°æ¤è¨¼ããªãã*/
|
---|
445 | if ((opt = find_msg_option(msg, DHCP6_OPT_IA_TA, 0)) == NULL)
|
---|
446 | return E_OK;
|
---|
447 |
|
---|
448 | /* ãªãã·ã§ã³é·ãæ¤è¨¼ããã*/
|
---|
449 | ta = (T_DHCP6_OPT_IA_TA *)opt;
|
---|
450 | if (!(msg->len >= (opt - (uint8_t*)&msg->msg) + sizeof(*ta) &&
|
---|
451 | (MSG2HOST16(ta->len) & ~DHCP6C_IAA_FLAG_MASK) >= sizeof(*ta)))
|
---|
452 | return E_PAR;
|
---|
453 |
|
---|
454 | /*
|
---|
455 | * ã¢ãã¬ã¹æ
|
---|
456 | å ±ã誤ã£ã¦ããæã¯ã¨ã©ã¼ãRFC3315 (22.4) åç
|
---|
457 | §ã
|
---|
458 | */
|
---|
459 | if (validate_iaaddrs(opt + sizeof(*ta), (MSG2HOST16(ta->len) & ~DHCP6C_IAA_FLAG_MASK) - (sizeof(*ta) - sizeof(T_DHCP6_OPTION))) != E_OK)
|
---|
460 | return E_PAR;
|
---|
461 |
|
---|
462 | return E_OK;
|
---|
463 | }
|
---|
464 | /*
|
---|
465 | * classify_reply -- å¿çã¡ãã»ã¼ã¸ãåé¡ããã
|
---|
466 | */
|
---|
467 |
|
---|
468 | static ER
|
---|
469 | classify_reply (T_DHCP6_CLI_MSG *msg)
|
---|
470 | {
|
---|
471 | ER error;
|
---|
472 |
|
---|
473 | /* IA_NA ãªãã·ã§ã³ãæ¤è¨¼ããã*/
|
---|
474 | if ((error = validate_ia_na_pd(msg, DHCP6_OPT_IA_NA)) != E_OK)
|
---|
475 | return error;
|
---|
476 |
|
---|
477 | /* IA_TA ãªãã·ã§ã³ãæ¤è¨¼ããã*/
|
---|
478 | if ((error = validate_ia_ta(msg)) != E_OK)
|
---|
479 | return error;
|
---|
480 |
|
---|
481 | /* IA_PD ãªãã·ã§ã³ãæ¤è¨¼ããã*/
|
---|
482 | if ((error = validate_ia_na_pd(msg, DHCP6_OPT_IA_PD)) != E_OK)
|
---|
483 | return error;
|
---|
484 |
|
---|
485 | /* ãµã¼ã DUID ããããã¨ãæ¤è¨¼ããã*/
|
---|
486 | if (find_msg_option(msg, DHCP6_OPT_SERVERID, 0) == NULL)
|
---|
487 | return E_PAR;
|
---|
488 |
|
---|
489 | return E_OK;
|
---|
490 | }
|
---|
491 |
|
---|
492 | /*
|
---|
493 | * validate_reply -- å¿çã¡ãã»ã¼ã¸ãæ¤è¨¼ããã
|
---|
494 | */
|
---|
495 |
|
---|
496 | static ER
|
---|
497 | validate_reply (T_DHCP6_CLI_CONTEXT *ct, T_DHCP6_CLI_MSG *msg)
|
---|
498 | {
|
---|
499 | T_DHCP6_OPT_CLIENTID *cid;
|
---|
500 | uint8_t *opt;
|
---|
501 |
|
---|
502 | /* ãµã¼ã DUID ããããã¨ãæ¤è¨¼ããã*/
|
---|
503 | if (find_msg_option(msg, DHCP6_OPT_SERVERID, 0) == NULL)
|
---|
504 | return E_PAR;
|
---|
505 |
|
---|
506 | /* ã¯ã©ã¤ã¢ã³ã DUID ããããèªåã®ã¯ã©ã¤ã¢ã³ã DUID ã¨åããã¨ãæ¤è¨¼ããã*/
|
---|
507 | if ((opt = find_msg_option(msg, DHCP6_OPT_CLIENTID, 0)) == NULL)
|
---|
508 | return E_PAR;
|
---|
509 |
|
---|
510 | cid = (T_DHCP6_OPT_CLIENTID*)opt;
|
---|
511 | if (MSG2HOST16(cid->len) != ct->duid_len)
|
---|
512 | return E_PAR;
|
---|
513 | if (memcmp(opt + sizeof(*cid), ct->duid, ct->duid_len) != 0)
|
---|
514 | return E_PAR;
|
---|
515 |
|
---|
516 | return E_OK;
|
---|
517 | }
|
---|
518 |
|
---|
519 | /*
|
---|
520 | * get_status_code -- STATUS ãªãã·ã§ã³ã®çµæã³ã¼ããç²å¾ããã
|
---|
521 | */
|
---|
522 |
|
---|
523 | static ER_UINT
|
---|
524 | get_status_code (uint8_t *msg, uint_t msg_len)
|
---|
525 | {
|
---|
526 | T_DHCP6_OPT_STATUS_CODE *status;
|
---|
527 | uint8_t *opt;
|
---|
528 |
|
---|
529 | /* STATUS ãªãã·ã§ã³ãç¡ããã°æ¤è¨¼ããªãã*/
|
---|
530 | if ((opt = find_option(msg, msg_len, DHCP6_OPT_STATUS_CODE, 0)) == NULL)
|
---|
531 | return DHCP6_STAT_SUCCESS;
|
---|
532 |
|
---|
533 | /* ãªãã·ã§ã³é·ãæ¤è¨¼ããã*/
|
---|
534 | status = (T_DHCP6_OPT_STATUS_CODE*)opt;
|
---|
535 | if (msg_len < sizeof(*status))
|
---|
536 | return E_PAR;
|
---|
537 | if (MSG2HOST16(status->len) < sizeof(*status) - sizeof(T_DHCP6_OPTION))
|
---|
538 | return E_PAR;
|
---|
539 |
|
---|
540 | return MSG2HOST16(status->status);
|
---|
541 | }
|
---|
542 |
|
---|
543 | /*
|
---|
544 | * get_msg_status_code -- STATUS ãªãã·ã§ã³ã®çµæã³ã¼ããç²å¾ããã
|
---|
545 | */
|
---|
546 |
|
---|
547 | static ER_UINT
|
---|
548 | get_msg_status_code (T_DHCP6_CLI_MSG *cli_msg, uint_t *code)
|
---|
549 | {
|
---|
550 | T_DHCP6_OPTION *opt;
|
---|
551 | T_DHCP6_OPT_IA_NA_PD *ia;
|
---|
552 | T_DHCP6_OPT_IA_TA *ta;
|
---|
553 | ER_UINT status;
|
---|
554 | uint8_t *msg, *last;
|
---|
555 |
|
---|
556 | *code = 0;
|
---|
557 | cli_msg->status = DHCP6_CLI_STAT_UNDEFINED;
|
---|
558 | if ((status = get_status_code(cli_msg->msg.options, cli_msg->len)) == DHCP6_STAT_SUCCESS) {
|
---|
559 |
|
---|
560 | msg = cli_msg->msg.options;
|
---|
561 | last = msg + (cli_msg->len - sizeof(T_DHCP6_MSG_HDR));
|
---|
562 | while (msg < last) {
|
---|
563 |
|
---|
564 | opt = (T_DHCP6_OPTION*)msg;
|
---|
565 | status = get_status_code(msg + sizeof(*opt), MSG2HOST16(opt->len));
|
---|
566 | if (status != DHCP6_STAT_SUCCESS) {
|
---|
567 | *code = MSG2HOST16(opt->code);
|
---|
568 | break;
|
---|
569 | }
|
---|
570 |
|
---|
571 | if (MSG2HOST16(opt->code) == DHCP6_OPT_IA_NA || MSG2HOST16(opt->code) == DHCP6_OPT_IA_PD) {
|
---|
572 |
|
---|
573 | ia = (T_DHCP6_OPT_IA_NA_PD*)opt;
|
---|
574 | status = get_status_code(msg + sizeof(*opt), MSG2HOST16(ia->len));
|
---|
575 | if (status != DHCP6_STAT_SUCCESS) {
|
---|
576 | *code = MSG2HOST16(((T_DHCP6_OPTION*)((uint8_t*)opt + sizeof(*opt)))->code);
|
---|
577 | break;
|
---|
578 | }
|
---|
579 | }
|
---|
580 |
|
---|
581 | else if (MSG2HOST16(opt->code) == DHCP6_OPT_IA_TA) {
|
---|
582 |
|
---|
583 | ta = (T_DHCP6_OPT_IA_TA*)opt;
|
---|
584 | status = get_status_code(msg + sizeof(*opt), MSG2HOST16(ta->len));
|
---|
585 | if (status != DHCP6_STAT_SUCCESS) {
|
---|
586 | *code = MSG2HOST16(((T_DHCP6_OPTION*)((uint8_t*)opt + sizeof(*opt)))->code);
|
---|
587 | break;
|
---|
588 | }
|
---|
589 | }
|
---|
590 |
|
---|
591 | msg += MSG2HOST16(opt->len) + sizeof(*opt);
|
---|
592 | }
|
---|
593 | cli_msg->status = status;
|
---|
594 | }
|
---|
595 |
|
---|
596 | return status;
|
---|
597 | }
|
---|
598 |
|
---|
599 | /*
|
---|
600 | * validate_rcv_msg -- åä¿¡ã¡ãã»ã¼ã¸ãæ¤è¨¼ããã
|
---|
601 | */
|
---|
602 |
|
---|
603 | static ER
|
---|
604 | validate_rcv_msg (T_DHCP6_CLI_CONTEXT *ct, T_DHCP6_CLI_MSG *msg)
|
---|
605 | {
|
---|
606 | ER error;
|
---|
607 | uint_t code;
|
---|
608 |
|
---|
609 | /* ã¡ãã»ã¼ã¸ã®ã¿ã¤ããä¸è´ãã¦ãããã¨ãæ¤è¨¼ããã*/
|
---|
610 | switch (ct->fsm) {
|
---|
611 |
|
---|
612 | #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATELESS || DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_RA
|
---|
613 |
|
---|
614 | case DHCP6_FSM_SELECT:
|
---|
615 | if (msg->msg.hdr.type != DHCP6_REPLY)
|
---|
616 | return E_PAR;
|
---|
617 | break;
|
---|
618 | case DHCP6_FSM_INFORMED:
|
---|
619 | return E_PAR;
|
---|
620 | break;
|
---|
621 |
|
---|
622 | #endif /* of #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATELESS || DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_RA */
|
---|
623 |
|
---|
624 | #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATEFULL || DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_RA
|
---|
625 |
|
---|
626 | case DHCP6_FSM_INIT:
|
---|
627 | if (msg->msg.hdr.type != DHCP6_ADVERTISE)
|
---|
628 | return E_PAR;
|
---|
629 | break;
|
---|
630 |
|
---|
631 | case DHCP6_FSM_SELECT:
|
---|
632 | case DHCP6_FSM_RENEW:
|
---|
633 | case DHCP6_FSM_REBIND:
|
---|
634 | case DHCP6_FSM_REL_INFO:
|
---|
635 | if (msg->msg.hdr.type != DHCP6_REPLY)
|
---|
636 | return E_PAR;
|
---|
637 | break;
|
---|
638 |
|
---|
639 | case DHCP6_FSM_BOUND:
|
---|
640 | return E_PAR;
|
---|
641 | break;
|
---|
642 |
|
---|
643 | #endif /* of #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATEFULL || DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_RA */
|
---|
644 |
|
---|
645 | default:
|
---|
646 | syslog(LOG_NOTICE, "[DHCP6C] error, unknown state: %d.", ct->fsm);
|
---|
647 | return E_PAR;
|
---|
648 | break;
|
---|
649 | }
|
---|
650 |
|
---|
651 | /* åä¿¡ã¡ãã»ã¼ã¸ãæ¤è¨¼ããã*/
|
---|
652 | if ((error = validate_reply(ct, msg)) != E_OK)
|
---|
653 | return error;
|
---|
654 |
|
---|
655 | /* åä¿¡ã¡ãã»ã¼ã¸ãåé¡ããã*/
|
---|
656 | if ((error = classify_reply(msg)) != E_OK)
|
---|
657 | return error;
|
---|
658 |
|
---|
659 | /* åä¿¡ããã¡ãã»ã¼ã¸å
|
---|
660 | ã® STATUS CODE ãªãã·ã§ã³ãæ¤è¨¼ããã*/
|
---|
661 | error = get_msg_status_code(msg, &code);
|
---|
662 | if (error != E_OK)
|
---|
663 | return error > 0 ? E_PAR : error;
|
---|
664 |
|
---|
665 | return E_OK;
|
---|
666 | }
|
---|
667 |
|
---|
668 | /*
|
---|
669 | * eval_ia_prefer -- IA_NA/IA_TA/IA_PD ã®æ¨å¥¨åº¦ãè©ä¾¡ããã
|
---|
670 | */
|
---|
671 |
|
---|
672 | static void
|
---|
673 | eval_ia_prefer (T_DHCP6_CLI_MSG *cli_msg)
|
---|
674 | {
|
---|
675 | T_DHCP6_OPTION *opt;
|
---|
676 | T_DHCP6_OPT_IA_NA_PD *ia;
|
---|
677 | T_DHCP6_OPT_IA_TA *ta;
|
---|
678 | T_DHCP6_OPT_IAADDR *iaa;
|
---|
679 | uint8_t *msg, *last;
|
---|
680 | uint_t aoff, asize;
|
---|
681 |
|
---|
682 | /* ç¡å¹ã®å ´åã¯çµäºããã*/
|
---|
683 | if (cli_msg == NULL)
|
---|
684 | return;
|
---|
685 |
|
---|
686 | msg = cli_msg->msg.options;
|
---|
687 | last = msg + (cli_msg->len - sizeof(T_DHCP6_MSG_HDR));
|
---|
688 | while (msg < last) {
|
---|
689 | opt = (T_DHCP6_OPTION*)msg;
|
---|
690 |
|
---|
691 | if (MSG2HOST16(opt->code) == DHCP6_OPT_IA_NA || MSG2HOST16(opt->code) == DHCP6_OPT_IA_PD) {
|
---|
692 |
|
---|
693 | ia = (T_DHCP6_OPT_IA_NA_PD*)opt;
|
---|
694 | aoff = sizeof(*ia);
|
---|
695 | asize = MSG2HOST16(ia->len) + sizeof(*opt);
|
---|
696 | while (aoff < asize) {
|
---|
697 | cli_msg->prefer += DHCP6_CLI_CFG_PREFER_IAADDR;
|
---|
698 | iaa = (T_DHCP6_OPT_IAADDR*)((uint8_t*)opt + aoff);
|
---|
699 | aoff += (MSG2HOST16(iaa->len) & ~DHCP6C_IAA_FLAG_MASK) + sizeof(*iaa);
|
---|
700 | }
|
---|
701 | cli_msg->prefer = (cli_msg->prefer + DHCP6_CLI_CFG_PREFER_IA) | DHCP6_ClI_MSG_PREFER_ADDR;
|
---|
702 | }
|
---|
703 |
|
---|
704 | else if (MSG2HOST16(opt->code) == DHCP6_OPT_IA_TA) {
|
---|
705 |
|
---|
706 | ta = (T_DHCP6_OPT_IA_TA*)opt;
|
---|
707 | aoff = sizeof(*ta);
|
---|
708 | asize = MSG2HOST16(ta->len) + sizeof(*opt);
|
---|
709 | while (aoff < asize) {
|
---|
710 | cli_msg->prefer += DHCP6_CLI_CFG_PREFER_IAADDR;
|
---|
711 | iaa = (T_DHCP6_OPT_IAADDR*)((uint8_t*)opt + aoff);
|
---|
712 | aoff += (MSG2HOST16(iaa->len) & ~DHCP6C_IAA_FLAG_MASK) + sizeof(*iaa);
|
---|
713 | }
|
---|
714 | cli_msg->prefer = (cli_msg->prefer + DHCP6_CLI_CFG_PREFER_IA) | DHCP6_ClI_MSG_PREFER_ADDR;
|
---|
715 | }
|
---|
716 |
|
---|
717 | msg += MSG2HOST16(opt->len) + sizeof(*opt);
|
---|
718 | }
|
---|
719 |
|
---|
720 | }
|
---|
721 |
|
---|
722 | /*
|
---|
723 | * eval_prefer -- åä¿¡ã¡ãã»ã¼ã¸ã®æ¨å¥¨åº¦ãè©ä¾¡ããã
|
---|
724 | */
|
---|
725 |
|
---|
726 | static void
|
---|
727 | eval_prefer (T_DHCP6_CLI_MSG *msg)
|
---|
728 | {
|
---|
729 | uint8_t *opt;
|
---|
730 | int ix;
|
---|
731 |
|
---|
732 | /* ç¡å¹ã®å ´åã¯çµäºããã*/
|
---|
733 | if (msg == NULL)
|
---|
734 | return;
|
---|
735 |
|
---|
736 | /* PREFERENCE ãªãã·ã§ã³ãè©ä¾¡ããã*/
|
---|
737 | if ((opt = find_msg_option(msg, DHCP6_OPT_PREFERENCE, sizeof(T_DHCP6_OPT_PREFERENCE))) != NULL)
|
---|
738 | msg->prefer = MSG2HOST16(((T_DHCP6_OPT_PREFERENCE*)opt)->prefer) | DHCP6_ClI_MSG_PREFER_OPTION;
|
---|
739 | else
|
---|
740 | msg->prefer = 1;
|
---|
741 |
|
---|
742 | #if defined(DHCP6_CLI_CFG_REQUIRED_OLIST)
|
---|
743 |
|
---|
744 | /* å¿
|
---|
745 | é ãªãã·ã§ã³ãæ¤è¨¼ããã*/
|
---|
746 | for (ix = sizeof(required_plist); ix -- > 0; ) {
|
---|
747 | if (find_msg_option(msg, required_plist[ix], 0) == NULL)
|
---|
748 | msg->prefer = 0;
|
---|
749 | }
|
---|
750 | msg->prefer |= DHCP6_ClI_MSG_PREFER_REQUIRED;
|
---|
751 |
|
---|
752 | #endif /* of #if defined(DHCP6_CLI_CFG_REQUIRED_OLIST) */
|
---|
753 |
|
---|
754 | #if defined(DHCP6_CLI_CFG_REQUEST_OLIST)
|
---|
755 |
|
---|
756 | /* è¦æ±ãªãã·ã§ã³ãæ¤è¨¼ããã*/
|
---|
757 | for (ix = sizeof(request_plist); ix -- > 0; ) {
|
---|
758 | if (find_msg_option(msg, request_plist[ix], 0) != NULL)
|
---|
759 | msg->prefer = (msg->prefer + 1) | DHCP6_ClI_MSG_PREFER_REQUEST;
|
---|
760 | }
|
---|
761 |
|
---|
762 | #endif /* of #if defined(DHCP6_CLI_CFG_REQUEST_OLIST) */
|
---|
763 | }
|
---|
764 |
|
---|
765 | /*
|
---|
766 | * eval_rcv_msg -- åä¿¡ã¡ãã»ã¼ã¸ãè©ä¾¡ããã
|
---|
767 | */
|
---|
768 |
|
---|
769 | static ER
|
---|
770 | eval_rcv_msg (T_DHCP6_CLI_CONTEXT *ct)
|
---|
771 | {
|
---|
772 | T_DHCP6_CLI_MSG *evl, *msg;
|
---|
773 | SYSTIM time;
|
---|
774 |
|
---|
775 | /* ã¡ãã»ã¼ã¸ãåä¿¡ãã¦ããªããã°ä¸æ¢ããã*/
|
---|
776 | syscall(wai_sem(SEM_DHCP6_CLI_LOCK));
|
---|
777 | if (ct->val_lst == NULL) {
|
---|
778 | syscall(sig_sem(SEM_DHCP6_CLI_LOCK));
|
---|
779 | return E_OK;
|
---|
780 | }
|
---|
781 |
|
---|
782 | /* æ¤è¨¼ã¡ãã»ã¼ã¸ãªã¹ãããè©ä¾¡ã¡ãã»ã¼ã¸ãåãåºãã*/
|
---|
783 | evl = ct->val_lst;
|
---|
784 | ct->val_lst = ct->val_lst->next;
|
---|
785 | evl->next = NULL;
|
---|
786 | syscall(sig_sem(SEM_DHCP6_CLI_LOCK));
|
---|
787 |
|
---|
788 | /* åä¿¡æéãè¨å®ããã*/
|
---|
789 | get_tim(&time);
|
---|
790 | evl->rcv_time = time;
|
---|
791 |
|
---|
792 | /* è©ä¾¡ã¡ãã»ã¼ã¸ãæ¤è¨¼ããã*/
|
---|
793 | if (validate_rcv_msg(ct, evl) != E_OK) {
|
---|
794 |
|
---|
795 | /* ã¨ã©ã¼ãçºçããè©ä¾¡ã¡ãã»ã¼ã¸ãåä¿¡ã¡ãã»ã¼ã¸æ§é ä½ãªã¹ãã«æ»ãã*/
|
---|
796 | goto rcv_ret;
|
---|
797 | }
|
---|
798 |
|
---|
799 | /* REL_INFO ç¶æ
|
---|
800 | ã®æã®å¦ç */
|
---|
801 | if (ct->fsm == DHCP6_FSM_REL_INFO) {
|
---|
802 | syscall(wai_sem(SEM_DHCP6_CLI_LOCK));
|
---|
803 | if (evl->status == DHCP6_STAT_SUCCESS) {
|
---|
804 | /*
|
---|
805 | * STATUS CODE ã DHCP6_STAT_SUCCESS ãªãã
|
---|
806 | * è©ä¾¡ã¡ãã»ã¼ã¸ãæ¨å¥¨ã¡ãã»ã¼ã¸ãªã¹ãã«è¨å®ãã¦çµäºããã
|
---|
807 | */
|
---|
808 | evl->next = ct->prf_lst;
|
---|
809 | ct->prf_lst = evl;
|
---|
810 | }
|
---|
811 | else {
|
---|
812 | /* è©ä¾¡ã¡ãã»ã¼ã¸ãåä¿¡ã¡ãã»ã¼ã¸æ§é ä½ãªã¹ãã«æ»ãã¦çµäºããã*/
|
---|
813 | evl->next = ct->rcv_lst;
|
---|
814 | ct->rcv_lst = evl;
|
---|
815 | }
|
---|
816 | syscall(sig_sem(SEM_DHCP6_CLI_LOCK));
|
---|
817 | return E_OK;
|
---|
818 | }
|
---|
819 |
|
---|
820 | /* è©ä¾¡ã¡ãã»ã¼ã¸ã®æ¨å¥¨åº¦ãè©ä¾¡ããã*/
|
---|
821 | eval_prefer(evl);
|
---|
822 | eval_ia_prefer(evl);
|
---|
823 |
|
---|
824 | /* æ¨å¥¨ã¡ãã»ã¼ã¸ãªã¹ãã空ãªãè©ä¾¡ã¡ãã»ã¼ã¸ã移ãã¦çµäºããã*/
|
---|
825 | if (ct->prf_lst == NULL) {
|
---|
826 | ct->max_prefer = evl->prefer & DHCP6_ClI_MSG_PREFER_VALUE_MASK;
|
---|
827 | ct->prf_lst = evl;
|
---|
828 | return E_OK;
|
---|
829 | }
|
---|
830 |
|
---|
831 | /* è©ä¾¡ã¡ãã»ã¼ã¸ã®æ¨å¥¨åº¦ã¨æ¨å¥¨ã¡ãã»ã¼ã¸ãªã¹ãã®æ大æ¨å¥¨åº¦ãæ¯è¼ããã*/
|
---|
832 | if ((evl->prefer & DHCP6_ClI_MSG_PREFER_VALUE_MASK) > ct->max_prefer) {
|
---|
833 |
|
---|
834 | /*
|
---|
835 | * è©ä¾¡ã¡ãã»ã¼ã¸ã®æ¨å¥¨åº¦ãæ¨å¥¨ã¡ãã»ã¼ã¸ãªã¹ãã®æ大æ¨å¥¨åº¦ããé«ããã°ã
|
---|
836 | * æ¨å¥¨ã¡ãã»ã¼ã¸ãªã¹ããåä¿¡ã¡ãã»ã¼ã¸æ§é ä½ãªã¹ãã«æ»ãã
|
---|
837 | * è©ä¾¡ã¡ãã»ã¼ã¸ãæ¨å¥¨ã¡ãã»ã¼ã¸ãªã¹ãã«ç§»ãã
|
---|
838 | */
|
---|
839 | ct->max_prefer = evl->prefer & DHCP6_ClI_MSG_PREFER_VALUE_MASK;
|
---|
840 | syscall(wai_sem(SEM_DHCP6_CLI_LOCK));
|
---|
841 | if (ct->rcv_lst == NULL)
|
---|
842 | ct->rcv_lst = ct->prf_lst;
|
---|
843 | else {
|
---|
844 | for (msg = ct->rcv_lst; msg->next != NULL; msg = msg->next)
|
---|
845 | ;
|
---|
846 | msg->next = ct->prf_lst;
|
---|
847 | }
|
---|
848 | syscall(sig_sem(SEM_DHCP6_CLI_LOCK));
|
---|
849 | ct->prf_lst = evl;
|
---|
850 | return E_OK;
|
---|
851 | }
|
---|
852 |
|
---|
853 | else if ((evl->prefer & DHCP6_ClI_MSG_PREFER_VALUE_MASK) == ct->max_prefer) {
|
---|
854 | for (msg = ct->prf_lst; msg != NULL; msg = msg->next) {
|
---|
855 | if (is_equal_sid(evl, msg)) {
|
---|
856 |
|
---|
857 | /*
|
---|
858 | * æ¨å¥¨ã¡ãã»ã¼ã¸ãªã¹ãã«åã DHCP6_OPT_SERVERID ã®ã¡ãã»ã¼ã¸ãããã°ã
|
---|
859 | * è©ä¾¡ã¡ãã»ã¼ã¸ãåä¿¡ã¡ãã»ã¼ã¸æ§é ä½ãªã¹ãã«æ»ãã
|
---|
860 | */
|
---|
861 | goto rcv_ret;
|
---|
862 | }
|
---|
863 | }
|
---|
864 |
|
---|
865 | /*
|
---|
866 | * è©ä¾¡ã¡ãã»ã¼ã¸ãæ¨å¥¨ã¡ãã»ã¼ã¸ãªã¹ãã«ç§»ãã
|
---|
867 | */
|
---|
868 | evl->next = ct->prf_lst;
|
---|
869 | ct->prf_lst = evl;
|
---|
870 | return E_OK;
|
---|
871 | }
|
---|
872 |
|
---|
873 | /*else */
|
---|
874 | /*
|
---|
875 | * è©ä¾¡ã¡ãã»ã¼ã¸ã®æ¨å¥¨åº¦ãæ¨å¥¨ã¡ãã»ã¼ã¸ãªã¹ãã®æ大æ¨å¥¨åº¦ããä½ããã°ã
|
---|
876 | * è©ä¾¡ã¡ãã»ã¼ã¸ãåä¿¡ã¡ãã»ã¼ã¸æ§é ä½ãªã¹ãã«æ»ãã
|
---|
877 | */
|
---|
878 |
|
---|
879 | rcv_ret:
|
---|
880 | syscall(wai_sem(SEM_DHCP6_CLI_LOCK));
|
---|
881 | evl->next = ct->rcv_lst;
|
---|
882 | ct->rcv_lst = evl;
|
---|
883 | syscall(sig_sem(SEM_DHCP6_CLI_LOCK));
|
---|
884 | return E_OK;
|
---|
885 | }
|
---|
886 |
|
---|
887 | /*
|
---|
888 | * select_msg -- æ¨å¥¨ã¡ãã»ã¼ã¸ãªã¹ãã®å
|
---|
889 | é ã®ã¡ãã»ã¼ã¸ãé¸æããã
|
---|
890 | */
|
---|
891 |
|
---|
892 | static T_DHCP6_CLI_MSG*
|
---|
893 | select_msg (T_DHCP6_CLI_CONTEXT *ct)
|
---|
894 | {
|
---|
895 | T_DHCP6_CLI_MSG *msg, *select;
|
---|
896 |
|
---|
897 | syscall(wai_sem(SEM_DHCP6_CLI_LOCK));
|
---|
898 | if (ct->prf_lst == NULL) {
|
---|
899 | /* ã¡ãã»ã¼ã¸ãåä¿¡ãã¦ããªããã°ä¸æ¢ããã*/
|
---|
900 | syscall(sig_sem(SEM_DHCP6_CLI_LOCK));
|
---|
901 | return NULL;
|
---|
902 | }
|
---|
903 |
|
---|
904 | select = ct->prf_lst;
|
---|
905 |
|
---|
906 | #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATELESS
|
---|
907 |
|
---|
908 | if ((select->prefer & DHCP6_ClI_MSG_PREFER_REQUIRED) == 0) {
|
---|
909 | /* å¿
|
---|
910 | é ãªãã·ã§ã³ãç¡ããã°é¸æããªãã*/
|
---|
911 | syscall(sig_sem(SEM_DHCP6_CLI_LOCK));
|
---|
912 | return NULL;
|
---|
913 | }
|
---|
914 |
|
---|
915 | #elif DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATEFULL
|
---|
916 |
|
---|
917 | if (((select->prefer & DHCP6_ClI_MSG_PREFER_REQUIRED) == 0) ||
|
---|
918 | ((select->prefer & DHCP6_ClI_MSG_PREFER_ADDR) == 0)) {
|
---|
919 | /* å¿
|
---|
920 | é ãªãã·ã§ã³ã¨ã¢ãã¬ã¹ãç¡ããã°é¸æããªãã*/
|
---|
921 | syscall(sig_sem(SEM_DHCP6_CLI_LOCK));
|
---|
922 | return NULL;
|
---|
923 | }
|
---|
924 |
|
---|
925 | #else /* of #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATELESS */
|
---|
926 |
|
---|
927 | #endif /* of #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATELESS */
|
---|
928 |
|
---|
929 | /* æ¨å¥¨ã¡ãã»ã¼ã¸ãªã¹ãã®å
|
---|
930 | é ã®ã¡ãã»ã¼ã¸ãé¸æããã*/
|
---|
931 | ct->prf_lst = ct->prf_lst->next;
|
---|
932 | select->next = NULL;
|
---|
933 |
|
---|
934 | /* é¸æãããªãã£ãæ¤è¨¼ã¡ãã»ã¼ã¸ãåä¿¡ã¡ãã»ã¼ã¸æ§é ä½ãªã¹ãã«æ»ãã*/
|
---|
935 | if (ct->rcv_lst == NULL)
|
---|
936 | ct->rcv_lst = ct->prf_lst;
|
---|
937 | else {
|
---|
938 | for (msg = ct->rcv_lst; msg->next != NULL; msg = msg->next)
|
---|
939 | ;
|
---|
940 | msg->next = ct->prf_lst;
|
---|
941 | }
|
---|
942 | syscall(sig_sem(SEM_DHCP6_CLI_LOCK));
|
---|
943 | return select;
|
---|
944 | }
|
---|
945 |
|
---|
946 | /*
|
---|
947 | * advance_retrans -- åéä¿¡ã¿ã¤ã ã¢ã¦ããæ´æ°ããã
|
---|
948 | */
|
---|
949 |
|
---|
950 | static void
|
---|
951 | advance_retrans (T_DHCP6_CLI_CONTEXT *ct)
|
---|
952 | {
|
---|
953 | /*
|
---|
954 | * åéä¿¡ééï¼RTï¼ãæ´æ°ããã
|
---|
955 | * åéä¿¡æ¯ã«ç´ 2åãããã
|
---|
956 | * æ大éä¿¡ééï¼MRTï¼ãè¶
|
---|
957 | ããªãããã«ããã
|
---|
958 | */
|
---|
959 | ct->RT += ct->RT + dhcp6_rand(ct->RT);
|
---|
960 | if ((ct->MRT != 0) && (ct->RT > ct->MRT))
|
---|
961 | ct->RT = ct->MRT + dhcp6_rand(ct->MRT);
|
---|
962 |
|
---|
963 | /* åéä¿¡åæ°ãæ´æ°ããã*/
|
---|
964 | ct->txcount ++;
|
---|
965 | }
|
---|
966 |
|
---|
967 | /*
|
---|
968 | * init_retrans -- åéä¿¡åæ°ããã©ã³ã¶ã¯ã·ã§ã³ IDããã®ä»ãè¨å®ããã
|
---|
969 | */
|
---|
970 |
|
---|
971 | static void
|
---|
972 | init_retrans (T_DHCP6_CLI_CONTEXT *ct)
|
---|
973 | {
|
---|
974 | /* éä¿¡åæ°ããªã»ããããã*/
|
---|
975 | ct->txcount = 0;
|
---|
976 |
|
---|
977 | /* åéä¿¡ééãè¨å®ããã*/
|
---|
978 | ct->RT = ct->IRT + dhcp6_rand(ct->IRT);
|
---|
979 |
|
---|
980 | /* ãã©ã³ã¶ã¯ã·ã§ã³ ID ãè¨å®ããã*/
|
---|
981 | ct->xid = netapp_rand() % 0x00ffffff;
|
---|
982 |
|
---|
983 | /* åä¿¡ã¡ãã»ã¼ã¸ã®æ大æ¨å¥¨åº¦ããªã»ããããã*/
|
---|
984 | ct->max_prefer = 0;
|
---|
985 | }
|
---|
986 |
|
---|
987 | /*
|
---|
988 | * setup_msg_header -- ã¡ãã»ã¼ã¸ã®ãããé¨åãä½æããã
|
---|
989 | */
|
---|
990 |
|
---|
991 | static uint8_t *
|
---|
992 | setup_msg_header (T_DHCP6_CLI_CONTEXT *ct, uint_t type)
|
---|
993 | {
|
---|
994 | memset((void*)&ct->snd_msg->msg, sizeof(ct->snd_msg->msg), 0);
|
---|
995 | ct->snd_msg->len = sizeof(ct->snd_msg->msg);
|
---|
996 |
|
---|
997 | /* ãããé¨ãè¨å®ããã*/
|
---|
998 | ct->snd_msg->msg.hdr.type = type;
|
---|
999 | ct->snd_msg->msg.hdr.xid[0] = (ct->xid >> 16) & 0xff;
|
---|
1000 | ct->snd_msg->msg.hdr.xid[1] = (ct->xid >> 8) & 0xff;
|
---|
1001 | ct->snd_msg->msg.hdr.xid[2] = ct->xid & 0xff;
|
---|
1002 |
|
---|
1003 | return (uint8_t*)&ct->snd_msg->msg + sizeof(ct->snd_msg->msg.hdr);
|
---|
1004 | }
|
---|
1005 |
|
---|
1006 | /*
|
---|
1007 | * common_options -- æ¨æºãªãã·ã§ã³ã追å ããã
|
---|
1008 | */
|
---|
1009 |
|
---|
1010 | static uint8_t *
|
---|
1011 | common_options (T_DHCP6_CLI_CONTEXT *ct, uint8_t *msg, uint_t type, T_DHCP6_CLI_MSG *lease)
|
---|
1012 | {
|
---|
1013 | T_DHCP6_OPT_CLIENTID *cid;
|
---|
1014 | T_DHCP6_OPT_SERVERID *sid;
|
---|
1015 |
|
---|
1016 | #if defined(DHCP6_CLI_CFG_REQUIRED_OLIST) || defined(DHCP6_CLI_CFG_REQUEST_OLIST)
|
---|
1017 | T_DHCP6_OPT_ORO *oro;
|
---|
1018 | #endif
|
---|
1019 |
|
---|
1020 | uint8_t *opt;
|
---|
1021 | uint_t opt_len;
|
---|
1022 | int_t ix;
|
---|
1023 |
|
---|
1024 | #if defined(DHCP6_CLI_CFG_RAPID_COMMIT)
|
---|
1025 |
|
---|
1026 | /* Rapid-commit ã®æå® */
|
---|
1027 | if (type == DHCP6_SOLICIT)
|
---|
1028 | ;
|
---|
1029 |
|
---|
1030 | #endif /* of #if defined(DHCP6_CLI_CFG_RAPID_COMMIT) */
|
---|
1031 |
|
---|
1032 | /* ã¯ã©ã¤ã¢ã³ã DUID ã追å ããã*/
|
---|
1033 | cid = (T_DHCP6_OPT_CLIENTID*)msg;
|
---|
1034 | HOST2MSG16(cid->code, DHCP6_OPT_CLIENTID);
|
---|
1035 | HOST2MSG16(cid->len, ct->duid_len);
|
---|
1036 | memcpy(msg + sizeof(T_DHCP6_OPT_CLIENTID), ct->duid, ct->duid_len);
|
---|
1037 | msg += ct->duid_len + sizeof(T_DHCP6_OPT_CLIENTID);
|
---|
1038 |
|
---|
1039 | /* ãµã¼ã DUID ã追å ããã*/
|
---|
1040 | if (lease == NULL) {
|
---|
1041 | if (!(type == DHCP6_SOLICIT || type == DHCP6_INFO_REQ))
|
---|
1042 | return NULL;
|
---|
1043 | }
|
---|
1044 | else if (!(type == DHCP6_CONFIRM || type == DHCP6_REBIND)) {
|
---|
1045 | if ((opt = find_msg_option(lease, DHCP6_OPT_SERVERID, 0)) != NULL) {
|
---|
1046 | sid = (T_DHCP6_OPT_SERVERID*)opt;
|
---|
1047 | opt_len = MSG2HOST16(sid->len);
|
---|
1048 | memcpy(msg, opt, opt_len + sizeof(*sid));
|
---|
1049 | msg += opt_len + sizeof(*sid);
|
---|
1050 | }
|
---|
1051 | }
|
---|
1052 |
|
---|
1053 | #if defined(DHCP6_CLI_CFG_REQUIRED_OLIST) || defined(DHCP6_CLI_CFG_REQUEST_OLIST)
|
---|
1054 |
|
---|
1055 | /* å¿
|
---|
1056 | é ã»è¦æ±ãªãã·ã§ã³ã追å ããã*/
|
---|
1057 | oro = (T_DHCP6_OPT_ORO*)msg;
|
---|
1058 | HOST2MSG16(oro->code, DHCP6_OPT_ORO);
|
---|
1059 | HOST2MSG16(oro->len, 0);
|
---|
1060 | msg += sizeof(oro->code) + sizeof(oro->len);
|
---|
1061 |
|
---|
1062 | #if defined(DHCP6_CLI_CFG_REQUIRED_OLIST)
|
---|
1063 |
|
---|
1064 | /* å¿
|
---|
1065 | é ãªãã·ã§ã³ã追å ããã*/
|
---|
1066 | HOST2MSG16(oro->len, MSG2HOST16(oro->len) + sizeof(required_plist) * 2);
|
---|
1067 | for (ix = sizeof(required_plist); ix -- > 0; ) {
|
---|
1068 | host2msg16(msg, required_plist[ix]);
|
---|
1069 | msg += sizeof(uint16_t);
|
---|
1070 | }
|
---|
1071 |
|
---|
1072 | #endif /* of #if defined(DHCP6_CLI_CFG_REQUIRED_OLIST) */
|
---|
1073 |
|
---|
1074 | #if defined(DHCP6_CLI_CFG_REQUEST_OLIST)
|
---|
1075 |
|
---|
1076 | /* è¦æ±ãªãã·ã§ã³ã追å ããã*/
|
---|
1077 | HOST2MSG16(oro->len, MSG2HOST16(oro->len) + sizeof(request_plist) * 2);
|
---|
1078 | for (ix = sizeof(request_plist); ix -- > 0; ) {
|
---|
1079 | host2msg16(msg, request_plist[ix]);
|
---|
1080 | msg += sizeof(uint16_t);
|
---|
1081 | }
|
---|
1082 |
|
---|
1083 | #endif /* of #if defined(DHCP6_CLI_CFG_REQUEST_OLIST) */
|
---|
1084 |
|
---|
1085 | #endif /* of #if defined(DHCP6_CLI_CFG_REQUIRED_OLIST) || defined(DHCP6_CLI_CFG_REQUEST_OLIST) */
|
---|
1086 |
|
---|
1087 | return msg;
|
---|
1088 | }
|
---|
1089 |
|
---|
1090 | /*
|
---|
1091 | * rel_lease -- ãªã¼ã¹ããããªãã·ã§ã³ã解æãã¦å¤ã解æ¾ããã
|
---|
1092 | */
|
---|
1093 |
|
---|
1094 | static void
|
---|
1095 | rel_lease (T_DHCP6_CLI_CONTEXT *ct)
|
---|
1096 | {
|
---|
1097 | T_DHCP6_OPTION *hdr;
|
---|
1098 |
|
---|
1099 | #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATEFULL
|
---|
1100 |
|
---|
1101 | T_DHCP6_OPT_IA_NA_PD *ia;
|
---|
1102 | T_DHCP6_OPT_IAADDR *iaa;
|
---|
1103 |
|
---|
1104 | #endif /* of #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATEFULL */
|
---|
1105 |
|
---|
1106 | uint8_t *opt, *last;
|
---|
1107 |
|
---|
1108 | /* æå¹ãªãªã¼ã¹ã»ã¡ãã»ã¼ã¸æ§é ä½ãç¡ããã°ä½ãããªãã*/
|
---|
1109 | if (ct->act_msg == NULL)
|
---|
1110 | return;
|
---|
1111 |
|
---|
1112 | opt = ct->act_msg->msg.options;
|
---|
1113 | last = opt + (ct->act_msg->len - sizeof(T_DHCP6_MSG_HDR));
|
---|
1114 | while (opt < last) {
|
---|
1115 | hdr = (T_DHCP6_OPTION*)opt;
|
---|
1116 | switch (MSG2HOST16(hdr->code)) {
|
---|
1117 |
|
---|
1118 | case DHCP6_OPT_NAME_SERVERS:
|
---|
1119 | dns_in6_set_addr(NULL);
|
---|
1120 |
|
---|
1121 | #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATELESS
|
---|
1122 | syslog(LOG_NOTICE, "[DHCP6C] release DNS server addr.");
|
---|
1123 | #endif
|
---|
1124 | break;
|
---|
1125 |
|
---|
1126 | case DHCP6_OPT_DOMAIN_SEARCH:
|
---|
1127 | dns_in6_set_dname(NULL, 0);
|
---|
1128 | break;
|
---|
1129 |
|
---|
1130 | #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATEFULL
|
---|
1131 |
|
---|
1132 | case DHCP6_OPT_IA_NA:
|
---|
1133 | ia = (T_DHCP6_OPT_IA_NA_PD*)opt;
|
---|
1134 | if (MSG2HOST16(ia->len) > sizeof(*iaa)) {
|
---|
1135 | iaa = (T_DHCP6_OPT_IAADDR*)(opt + sizeof(*ia));
|
---|
1136 | in6_del_ifaddr(&iaa->addr);
|
---|
1137 | }
|
---|
1138 | break;
|
---|
1139 |
|
---|
1140 | case DHCP6_OPT_IA_TA:
|
---|
1141 | break;
|
---|
1142 |
|
---|
1143 | case DHCP6_OPT_IA_PD:
|
---|
1144 | break;
|
---|
1145 |
|
---|
1146 | #endif /* of #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATEFULL */
|
---|
1147 |
|
---|
1148 | default:
|
---|
1149 | break;
|
---|
1150 | }
|
---|
1151 | opt += MSG2HOST16(hdr->len) + sizeof(*hdr);
|
---|
1152 | }
|
---|
1153 | }
|
---|
1154 |
|
---|
1155 | /*
|
---|
1156 | * set_lease -- ãªã¼ã¹ããããªãã·ã§ã³ã解æãã¦å¤ãè¨å®ããã
|
---|
1157 | */
|
---|
1158 |
|
---|
1159 | static void
|
---|
1160 | set_lease (T_DHCP6_CLI_CONTEXT *ct)
|
---|
1161 | {
|
---|
1162 | T_DHCP6_OPTION *hdr;
|
---|
1163 | T_DHCP6_OPT_NAME_SERVERS *ns;
|
---|
1164 | T_DHCP6_OPT_DOMAIN_SEARCH *ds;
|
---|
1165 | const uint8_t *dname;
|
---|
1166 |
|
---|
1167 | #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATEFULL
|
---|
1168 |
|
---|
1169 | T_DHCP6_OPT_IA_NA_PD *ia;
|
---|
1170 | T_DHCP6_OPT_IAADDR *iaa;
|
---|
1171 | SYSTIM time, delay;
|
---|
1172 | ER error;
|
---|
1173 |
|
---|
1174 | #endif /* of #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATEFULL */
|
---|
1175 |
|
---|
1176 | uint8_t *opt, *last;
|
---|
1177 |
|
---|
1178 | opt = ct->act_msg->msg.options;
|
---|
1179 | last = opt + (ct->act_msg->len - sizeof(T_DHCP6_MSG_HDR));
|
---|
1180 | while (opt < last) {
|
---|
1181 | hdr = (T_DHCP6_OPTION*)opt;
|
---|
1182 | switch (MSG2HOST16(hdr->code)) {
|
---|
1183 |
|
---|
1184 | case DHCP6_OPT_NAME_SERVERS:
|
---|
1185 | ns = (T_DHCP6_OPT_NAME_SERVERS*)opt;
|
---|
1186 | dns_in6_set_addr(&ns->addrs[0]);
|
---|
1187 |
|
---|
1188 | #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATELESS
|
---|
1189 | syslog(LOG_NOTICE, "[DHCP6C] set DNS server addr: %s.", ipv62str(NULL, &ns->addrs[0]));
|
---|
1190 | #endif
|
---|
1191 | break;
|
---|
1192 |
|
---|
1193 | case DHCP6_OPT_DOMAIN_SEARCH:
|
---|
1194 | ds = (T_DHCP6_OPT_DOMAIN_SEARCH*)opt;
|
---|
1195 | dname = dns_in6_set_dname(ds->name, MSG2HOST16(ds->len));
|
---|
1196 | break;
|
---|
1197 |
|
---|
1198 | #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATEFULL
|
---|
1199 |
|
---|
1200 | case DHCP6_OPT_IA_NA:
|
---|
1201 | ia = (T_DHCP6_OPT_IA_NA_PD*)opt;
|
---|
1202 | if (MSG2HOST16(ia->len) > sizeof(*iaa)) {
|
---|
1203 | get_tim(&time);
|
---|
1204 | delay = time - ct->act_msg->rcv_time;
|
---|
1205 | iaa = (T_DHCP6_OPT_IAADDR*)(opt + sizeof(*ia));
|
---|
1206 | error = in6_upd_ifaddr(&iaa->addr, 64, MSG2HOST32(iaa->valid) - SYSTIM2SEC(delay),
|
---|
1207 | MSG2HOST32(iaa->prefer) - SYSTIM2SEC(delay));
|
---|
1208 | if (error == E_OK)
|
---|
1209 | syslog(LOG_NOTICE, "[DHCP6C] set IPv6 addr: %s.", ipv62str(NULL, &iaa->addr));
|
---|
1210 | else
|
---|
1211 | syslog(LOG_NOTICE, "[DHCP6C] set IPv6 addr, error: %s.", itron_strerror(error));
|
---|
1212 | }
|
---|
1213 | break;
|
---|
1214 |
|
---|
1215 | case DHCP6_OPT_IA_TA:
|
---|
1216 | break;
|
---|
1217 |
|
---|
1218 | case DHCP6_OPT_IA_PD:
|
---|
1219 | break;
|
---|
1220 |
|
---|
1221 | #endif /* of #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATEFULL */
|
---|
1222 |
|
---|
1223 | default:
|
---|
1224 | break;
|
---|
1225 | }
|
---|
1226 | opt += MSG2HOST16(hdr->len) + sizeof(*hdr);
|
---|
1227 | }
|
---|
1228 | }
|
---|
1229 |
|
---|
1230 | #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATELESS || DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_RA
|
---|
1231 |
|
---|
1232 | /*
|
---|
1233 | * start_req_info -- INFO-REQUEST ãéå§ããã
|
---|
1234 | *
|
---|
1235 | * 注æ: DHCPv6 ã® RFC3315 ã«ã¯ç¡ã
|
---|
1236 | */
|
---|
1237 |
|
---|
1238 | static void
|
---|
1239 | start_req_info (T_DHCP6_CLI_CONTEXT *ct)
|
---|
1240 | {
|
---|
1241 | /* ã¿ã¤ã ã¢ã¦ããè¨å®ããããRFC3315 (18.1.5) åç
|
---|
1242 | §ã*/
|
---|
1243 | ct->IRT = TMO_INF_TIMEOUT;
|
---|
1244 | ct->MRT = TMO_INF_MAX_RT;
|
---|
1245 | ct->MRC = 0;
|
---|
1246 |
|
---|
1247 | /* DHCP6_CLI_CFG_ONE_TRYãæå®ããã¦ããªããã°æ¨æºã¿ã¤ã ã¢ã¦ãã¾ã§åéããã*/
|
---|
1248 | #if defined(DHCP6_CLI_CFG_ONE_TRY)
|
---|
1249 | ct->MRD = 0;
|
---|
1250 | #else
|
---|
1251 | ct->MRD = TMO_DHCP6C_NORMAL;
|
---|
1252 | #endif
|
---|
1253 |
|
---|
1254 | /* åéåæ°ã¨ãã©ã³ã¶ã¯ã·ã§ã³ ID ãè¨å®ããã*/
|
---|
1255 | init_retrans(ct);
|
---|
1256 |
|
---|
1257 | /* REPLY ã¡ãã»ã¼ã¸ã®åä¿¡ã¿ã¤ã ã¢ã¦ããè¨å®ããã*/
|
---|
1258 | syscall(wai_sem(SEM_DHCP6_CLI_TIMER));
|
---|
1259 | ct->timers[DHCP6C_TIMER_RCV_REPLY] = SYSTIM2TIMER(ct->MRD);
|
---|
1260 | syscall(sig_sem(SEM_DHCP6_CLI_TIMER));
|
---|
1261 |
|
---|
1262 | /*
|
---|
1263 | * INFO-REQUEST ã¡ãã»ã¼ã¸éä¿¡é
|
---|
1264 | 延æéãè¨å®ããã
|
---|
1265 | * ãã ããTMO_INF_MAX_DELAY ã 1[s]ãªã®ã§ãdly_tsk()ã使ç¨ããã
|
---|
1266 | */
|
---|
1267 | dly_tsk(netapp_rand() % TMO_INF_MAX_DELAY);
|
---|
1268 |
|
---|
1269 | /* SELECT ç¶æ
|
---|
1270 | ã«é·ç§»ããã*/
|
---|
1271 | ct->fsm = DHCP6_FSM_SELECT;
|
---|
1272 |
|
---|
1273 | /* INFO-REQUEST ã¡ãã»ã¼ã¸ãéä¿¡ããã*/
|
---|
1274 | ct->flags |= DHCP6C_FLAG_TMOUT_SND_IREQ;
|
---|
1275 | syscall(sig_sem(SEM_DHCP6_CLI_READY));
|
---|
1276 | }
|
---|
1277 |
|
---|
1278 | /*
|
---|
1279 | * start_informed -- INFORMED ç¶æ
|
---|
1280 | ã«é·ç§»ããã
|
---|
1281 | *
|
---|
1282 | * 注æ: DHCPv6 ã® RFC3315 ã«ã¯ç¡ã
|
---|
1283 | */
|
---|
1284 |
|
---|
1285 | static void
|
---|
1286 | start_informed (T_DHCP6_CLI_CONTEXT *ct)
|
---|
1287 | {
|
---|
1288 | /* æå¹ãªãªã¼ã¹æ
|
---|
1289 | å ±ãç¡ããã° SLEEP ã«é·ç§»ããã*/
|
---|
1290 | if (ct->act_msg == NULL) {
|
---|
1291 | ct->fsm = DHCP6_FSM_SLEEP;
|
---|
1292 | return;
|
---|
1293 | }
|
---|
1294 |
|
---|
1295 | /* ãªã¼ã¹æ
|
---|
1296 | å ±ãè¨å®ããã*/
|
---|
1297 | set_lease(ct);
|
---|
1298 |
|
---|
1299 | /* INFORMED ç¶æ
|
---|
1300 | ã«é·ç§»ããã*/
|
---|
1301 | ct->fsm = DHCP6_FSM_INFORMED;
|
---|
1302 |
|
---|
1303 | //ct->flags |= DHCP6C_FLAG_STAY_STATE;
|
---|
1304 | }
|
---|
1305 |
|
---|
1306 | /*
|
---|
1307 | * start_rel_info -- ã¢ãã¬ã¹æ
|
---|
1308 | å ±ã解æ¾ããã
|
---|
1309 | *
|
---|
1310 | * 注æ: DHCPv6 ã® RFC3315 ã«ã¯ç¡ã
|
---|
1311 | */
|
---|
1312 |
|
---|
1313 | static void
|
---|
1314 | start_rel_info (T_DHCP6_CLI_CONTEXT *ct)
|
---|
1315 | {
|
---|
1316 | /* ãªã¼ã¹æ
|
---|
1317 | å ±ã解æ¾ããã*/
|
---|
1318 | rel_lease(ct);
|
---|
1319 |
|
---|
1320 | /* SLEEP ã«é·ç§»ããã*/
|
---|
1321 | ct->fsm = DHCP6_FSM_SLEEP;
|
---|
1322 | syscall(sig_sem(SEM_DHCP6_CLI_READY));
|
---|
1323 | }
|
---|
1324 |
|
---|
1325 | /*
|
---|
1326 | * select_info_reply -- æé©ãª REPLY (INFO-REQUEST ã¸ã®å¿ç) ã¡ãã»ã¼ã¸ãé¸æããã
|
---|
1327 | */
|
---|
1328 |
|
---|
1329 | static bool_t
|
---|
1330 | select_info_reply (T_DHCP6_CLI_CONTEXT *ct)
|
---|
1331 | {
|
---|
1332 | T_DHCP6_CLI_MSG *msg;
|
---|
1333 |
|
---|
1334 | /* æé©ãª REPLY ã¡ãã»ã¼ã¸ãé¸æããã*/
|
---|
1335 | if ((msg = select_msg(ct)) == NULL)
|
---|
1336 | return false;
|
---|
1337 |
|
---|
1338 | ct->act_msg = msg;
|
---|
1339 | return true;
|
---|
1340 | }
|
---|
1341 |
|
---|
1342 | /*
|
---|
1343 | * setup_info_req_msg -- INFO-REQUEST ã¡ãã»ã¼ã¸ãä½æããã
|
---|
1344 | */
|
---|
1345 |
|
---|
1346 | static ER
|
---|
1347 | setup_info_req_msg (T_DHCP6_CLI_CONTEXT *ct)
|
---|
1348 | {
|
---|
1349 | uint8_t *msg;
|
---|
1350 |
|
---|
1351 | /* ã¡ãã»ã¼ã¸ã®ãããé¨åãä½æããã*/
|
---|
1352 | if ((msg = setup_msg_header(ct, DHCP6_INFO_REQ)) == NULL)
|
---|
1353 | return E_PAR;
|
---|
1354 |
|
---|
1355 | if ((msg = common_options(ct, msg, DHCP6_INFO_REQ, NULL)) == NULL)
|
---|
1356 | return E_PAR;
|
---|
1357 |
|
---|
1358 | /* ã¡ãã»ã¼ã¸æ§é ä½é·ãè¨å®ããã*/
|
---|
1359 | ct->snd_msg->len = msg - (uint8_t*)&ct->snd_msg->msg;
|
---|
1360 |
|
---|
1361 | /* éä¿¡å
|
---|
1362 | ã¢ãã¬ã¹ãè¨å®ããã*/
|
---|
1363 | ct->dst.ipaddr = in6_addr_all_DHCP_relay_servers;
|
---|
1364 | return E_OK;
|
---|
1365 | }
|
---|
1366 |
|
---|
1367 | /*
|
---|
1368 | * send_info_req_msg -- INFO-REQUEST ã¡ãã»ã¼ã¸ãéä¿¡ããã
|
---|
1369 | */
|
---|
1370 |
|
---|
1371 | static void
|
---|
1372 | send_info_req_msg (T_DHCP6_CLI_CONTEXT *ct)
|
---|
1373 | {
|
---|
1374 | ER error;
|
---|
1375 |
|
---|
1376 |
|
---|
1377 | /* REPLY ã¡ãã»ã¼ã¸ã®é¸æãçµäºãã¦ããã°ãBOUND ç¶æ
|
---|
1378 | ã«é·ç§»ããã*/
|
---|
1379 | ct->flags &= ~DHCP6C_FLAG_TMOUT_MASK;
|
---|
1380 | if (select_info_reply(ct)) {
|
---|
1381 |
|
---|
1382 | /* REPLY ã¡ãã»ã¼ã¸åä¿¡ã¿ã¤ãã¼ãåæ¢ããã*/
|
---|
1383 | syscall(wai_sem(SEM_DHCP6_CLI_TIMER));
|
---|
1384 | ct->timers[DHCP6C_TIMER_RCV_REPLY] = 0;
|
---|
1385 | syscall(sig_sem(SEM_DHCP6_CLI_TIMER));
|
---|
1386 |
|
---|
1387 | /* INFORMED ç¶æ
|
---|
1388 | ã«é·ç§»ããã*/
|
---|
1389 | start_informed(ct);
|
---|
1390 | return;
|
---|
1391 | }
|
---|
1392 |
|
---|
1393 | /* åéä¿¡åæ°ã確èªããã*/
|
---|
1394 | if ((ct->MRC != 0) && (ct->txcount > ct->MRC)) {
|
---|
1395 | ct->error = E_TMOUT;
|
---|
1396 | return;
|
---|
1397 | }
|
---|
1398 |
|
---|
1399 | /* INFO-REQUEST ã¡ãã»ã¼ã¸ãä½æããã*/
|
---|
1400 | if ((error = setup_info_req_msg(ct)) != E_OK) {
|
---|
1401 | syslog(LOG_NOTICE, "[DHCP6C] error, setup request message: %s.", itron_strerror(error));
|
---|
1402 | ct->error = error;
|
---|
1403 | return;
|
---|
1404 | }
|
---|
1405 |
|
---|
1406 | /* INFO-REQUEST ã¡ãã»ã¼ã¸ãéä¿¡ããã*/
|
---|
1407 | error = UDP_SND_DAT(ct->cepid, &ct->dst, &ct->snd_msg->msg, ct->snd_msg->len, TMO_NBLK);
|
---|
1408 | if (error != E_WBLK) {
|
---|
1409 | syslog(LOG_NOTICE, "[DHCP6C] error, send info-request message: %s.", itron_strerror(error));
|
---|
1410 | ct->error = error;
|
---|
1411 | return;
|
---|
1412 | }
|
---|
1413 |
|
---|
1414 | /* åéä¿¡ã¿ã¤ã ã¢ã¦ããè¨å®ããã*/
|
---|
1415 | syscall(wai_sem(SEM_DHCP6_CLI_TIMER));
|
---|
1416 | ct->timers[DHCP6C_TIMER_SND_IREQ] = SYSTIM2TIMER(ct->RT);
|
---|
1417 | syscall(sig_sem(SEM_DHCP6_CLI_TIMER));
|
---|
1418 |
|
---|
1419 | /* åéä¿¡ã¿ã¤ã ã¢ã¦ããæ´æ°ããã*/
|
---|
1420 | advance_retrans(ct);
|
---|
1421 | }
|
---|
1422 |
|
---|
1423 | #endif /* of #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATELESS || DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_RA */
|
---|
1424 |
|
---|
1425 | #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATEFULL || DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_RA
|
---|
1426 |
|
---|
1427 | /*
|
---|
1428 | * select_reply -- æé©ãª REPLY ã¡ãã»ã¼ã¸ãé¸æããã
|
---|
1429 | */
|
---|
1430 |
|
---|
1431 | static bool_t
|
---|
1432 | select_reply (T_DHCP6_CLI_CONTEXT *ct)
|
---|
1433 | {
|
---|
1434 | T_DHCP6_CLI_MSG *msg;
|
---|
1435 |
|
---|
1436 | /* æé©ãª REPLY ã¡ãã»ã¼ã¸ãé¸æããã*/
|
---|
1437 | if ((msg = select_msg(ct)) == NULL)
|
---|
1438 | return false;
|
---|
1439 |
|
---|
1440 | if (ct->adv_msg != NULL) {
|
---|
1441 | eval_prefer(ct->adv_msg);
|
---|
1442 | eval_ia_prefer(ct->adv_msg);
|
---|
1443 | }
|
---|
1444 |
|
---|
1445 | /*
|
---|
1446 | * æé©ãª REPLY ã¡ãã»ã¼ã¸ã®æ¨å¥¨åº¦ã ADVERTISE ã¡ãã»ã¼ã¸æ¨å¥¨åº¦ã®
|
---|
1447 | * 1/2 以ä¸ã®æã¯åä¿¡ã¡ãã»ã¼ã¸æ§é ä½ãªã¹ãã«æ»ãã
|
---|
1448 | */
|
---|
1449 | if ((ct->adv_msg != NULL) && (ct->max_prefer < (ct->adv_msg->prefer & DHCP6_ClI_MSG_PREFER_VALUE_MASK) / 2)) {
|
---|
1450 | syscall(wai_sem(SEM_DHCP6_CLI_LOCK));
|
---|
1451 | msg->next = ct->rcv_lst;
|
---|
1452 | ct->rcv_lst = msg;
|
---|
1453 | syscall(sig_sem(SEM_DHCP6_CLI_LOCK));
|
---|
1454 | }
|
---|
1455 | else {
|
---|
1456 |
|
---|
1457 | /*
|
---|
1458 | * ct->act_msg ã«ããæå¹ãªå
|
---|
1459 | REPLY ã¡ãã»ã¼ã¸ã
|
---|
1460 | * åä¿¡ã¡ãã»ã¼ã¸æ§é ä½ãªã¹ãã«æ»ãã¦ã
|
---|
1461 | * æé©ãª REPLY ã¡ãã»ã¼ã¸ã act ã«ç§»ãã
|
---|
1462 | */
|
---|
1463 | if (ct->act_msg != NULL) {
|
---|
1464 | syscall(wai_sem(SEM_DHCP6_CLI_LOCK));
|
---|
1465 | ct->act_msg->next = ct->rcv_lst;
|
---|
1466 | ct->rcv_lst = ct->act_msg;
|
---|
1467 | syscall(sig_sem(SEM_DHCP6_CLI_LOCK));
|
---|
1468 | }
|
---|
1469 | ct->act_msg = msg;
|
---|
1470 | }
|
---|
1471 |
|
---|
1472 | return ct->act_msg != NULL;
|
---|
1473 | }
|
---|
1474 |
|
---|
1475 | /*
|
---|
1476 | * select_adv -- æé©ãª ADVERTISE ã¡ãã»ã¼ã¸ãé¸æããã
|
---|
1477 | */
|
---|
1478 |
|
---|
1479 | static bool_t
|
---|
1480 | select_adv (T_DHCP6_CLI_CONTEXT *ct)
|
---|
1481 | {
|
---|
1482 | /* æé©ãª ADVERTISE ã¡ãã»ã¼ã¸ã adv ã«ç§»ãã*/
|
---|
1483 | if ((ct->adv_msg = select_msg(ct)) != NULL) {
|
---|
1484 |
|
---|
1485 | /*
|
---|
1486 | * æé©ãª ADVERTISE ã¡ãã»ã¼ã¸ã®ãµã¼ãã® IPv6 ã¢ãã¬ã¹ã
|
---|
1487 | * 次ããéä¿¡ããã¢ãã¬ã¹ã«è¨å®ããã
|
---|
1488 | */
|
---|
1489 | ct->dst = ct->adv_msg->srv;
|
---|
1490 | return true;
|
---|
1491 | }
|
---|
1492 | else
|
---|
1493 | return false;
|
---|
1494 | }
|
---|
1495 |
|
---|
1496 | /*
|
---|
1497 | * eval_expire -- æ¨å¥¨æå¹æéã¨æå¹æéã決å®ããã
|
---|
1498 | */
|
---|
1499 |
|
---|
1500 | static void
|
---|
1501 | eval_expire (T_DHCP6_CLI_CONTEXT *ct)
|
---|
1502 | {
|
---|
1503 | T_DHCP6_OPTION *opt;
|
---|
1504 | T_DHCP6_OPT_IA_NA_PD *ia;
|
---|
1505 | T_DHCP6_OPT_IAADDR *iaa;
|
---|
1506 | SYSTIM time;
|
---|
1507 | uint32_t depref, expire,
|
---|
1508 | high, low, renew, rebind,
|
---|
1509 | tval, iaa_high, iaa_low;
|
---|
1510 | uint8_t *msg, *last;
|
---|
1511 | uint_t aoff, asize, addrs;
|
---|
1512 |
|
---|
1513 | /* ã¿ã¤ãã¼ãåæ¢ããã*/
|
---|
1514 | syscall(wai_sem(SEM_DHCP6_CLI_TIMER));
|
---|
1515 | ct->timers[DHCP6C_TIMER_RENEW] = 0;
|
---|
1516 | ct->timers[DHCP6C_TIMER_REBIND] = 0;
|
---|
1517 | ct->timers[DHCP6C_TIMER_DEPREF] = 0;
|
---|
1518 | ct->timers[DHCP6C_TIMER_EXPIRE] = 0;
|
---|
1519 | syscall(sig_sem(SEM_DHCP6_CLI_TIMER));
|
---|
1520 |
|
---|
1521 | addrs = high = expire = 0;
|
---|
1522 | low = renew = rebind = depref = DHCP6_MAX_TIME;
|
---|
1523 |
|
---|
1524 | msg = ct->act_msg->msg.options;
|
---|
1525 | last = msg + (ct->act_msg->len - sizeof(T_DHCP6_MSG_HDR));
|
---|
1526 | get_tim(&time);
|
---|
1527 | while (msg < last) {
|
---|
1528 | opt = (T_DHCP6_OPTION*)msg;
|
---|
1529 |
|
---|
1530 | /* IA_NA/IA_PD ãªãã·ã§ã³ã§ããã°ãæå¹æéãæ´æ°ããã*/
|
---|
1531 | if (MSG2HOST16(opt->code) == DHCP6_OPT_IA_NA || MSG2HOST16(opt->code) == DHCP6_OPT_IA_PD) {
|
---|
1532 |
|
---|
1533 | //dump_msg_option("evl_expire1", msg);
|
---|
1534 | iaa_high = 0;
|
---|
1535 | iaa_low = DHCP6_MAX_TIME;
|
---|
1536 |
|
---|
1537 | ia = (T_DHCP6_OPT_IA_NA_PD*)opt;
|
---|
1538 | aoff = sizeof(*ia);
|
---|
1539 | asize = MSG2HOST16(ia->len) + sizeof(*opt);
|
---|
1540 | while (aoff < asize) {
|
---|
1541 |
|
---|
1542 | /* æçã®æ¨å¥¨æå¹æéãæ´æ°ããã*/
|
---|
1543 | iaa = (T_DHCP6_OPT_IAADDR*)((uint8_t*)opt + aoff);
|
---|
1544 | //dump_msg_option("evl_depref1", (uint8_t*)iaa);
|
---|
1545 | if (!(MSG2HOST16(iaa->len) & DHCP6C_IAA_FLAG_DEPREFERD)) {
|
---|
1546 | if (MSG2HOST32(iaa->prefer) == DHCP6_MAX_TIME)
|
---|
1547 | tval = DHCP6_MAX_TIME;
|
---|
1548 | else
|
---|
1549 | tval = MSG2HOST32(iaa->prefer) + SYSTIM2SEC(ct->act_msg->rcv_time);
|
---|
1550 | if (tval < depref)
|
---|
1551 | depref = tval;
|
---|
1552 | }
|
---|
1553 |
|
---|
1554 | /* IAADDR ã®æå¹æéãæ´æ°ããã*/
|
---|
1555 | iaa = (T_DHCP6_OPT_IAADDR*)((uint8_t*)opt + aoff);
|
---|
1556 | if (!(MSG2HOST16(iaa->len) & DHCP6C_IAA_FLAG_EXPIRED)) {
|
---|
1557 | if (MSG2HOST32(iaa->valid) == DHCP6_MAX_TIME)
|
---|
1558 | tval = DHCP6_MAX_TIME;
|
---|
1559 | else
|
---|
1560 | tval = MSG2HOST32(iaa->valid) + SYSTIM2SEC(ct->act_msg->rcv_time);
|
---|
1561 | tval -= SYSTIM2SEC(ct->act_msg->rcv_time);
|
---|
1562 | if (tval > iaa_high)
|
---|
1563 | iaa_high = tval;
|
---|
1564 | if (tval < iaa_low)
|
---|
1565 | iaa_low = tval;
|
---|
1566 | addrs ++;
|
---|
1567 | }
|
---|
1568 |
|
---|
1569 | aoff += (MSG2HOST16(iaa->len) & ~DHCP6C_IAA_FLAG_MASK) + sizeof(*iaa);
|
---|
1570 | }
|
---|
1571 |
|
---|
1572 | /* iaa_low 㨠iaa_high/2 ã®æé·ã®æ¹ãæå¹æéã¨ãã¦é¸æããã*/
|
---|
1573 | if (iaa_low <= (iaa_high / 2))
|
---|
1574 | expire = iaa_high;
|
---|
1575 | else
|
---|
1576 | expire = iaa_low;
|
---|
1577 |
|
---|
1578 | /* expire ã æ大å¤ï¼ç¡å¶éï¼ã 1 以ä¸ãªãæ¢å®å¤ã«è¨å®ããã*/
|
---|
1579 | if ((expire == DHCP6_MAX_TIME) || (expire <= 1))
|
---|
1580 | expire = SYSTIM2SEC(TMO_DHCP6C_REQ_LEASE) / 2;
|
---|
1581 | else
|
---|
1582 | expire /= 2;
|
---|
1583 |
|
---|
1584 | /* renew ã決å®ããã*/
|
---|
1585 | if (MSG2HOST32(ia->renew) == 0)
|
---|
1586 | tval = expire + SYSTIM2SEC(ct->act_msg->rcv_time);
|
---|
1587 | else if (MSG2HOST32(ia->renew) == DHCP6_MAX_TIME)
|
---|
1588 | tval = DHCP6_MAX_TIME;
|
---|
1589 | else
|
---|
1590 | tval = MSG2HOST32(ia->renew) + SYSTIM2SEC(ct->act_msg->rcv_time);
|
---|
1591 | if (tval < renew)
|
---|
1592 | renew = tval;
|
---|
1593 |
|
---|
1594 | /* rebind ã決å®ããã*/
|
---|
1595 | if (MSG2HOST32(ia->rebind) == 0)
|
---|
1596 | tval = (expire + expire / 2) + SYSTIM2SEC(ct->act_msg->rcv_time);
|
---|
1597 | else if (MSG2HOST32(ia->rebind) == DHCP6_MAX_TIME)
|
---|
1598 | tval = DHCP6_MAX_TIME;
|
---|
1599 | else
|
---|
1600 | tval = MSG2HOST32(ia->rebind) + SYSTIM2SEC(ct->act_msg->rcv_time);
|
---|
1601 | if (tval < rebind)
|
---|
1602 | rebind = tval;
|
---|
1603 |
|
---|
1604 | /* æçæå¹æéã¨æé·æå¹æéãæ´æ°ããã*/
|
---|
1605 | iaa_low += SYSTIM2SEC(ct->act_msg->rcv_time);
|
---|
1606 | iaa_high += SYSTIM2SEC(ct->act_msg->rcv_time);
|
---|
1607 | if (iaa_low < low)
|
---|
1608 | low = iaa_low;
|
---|
1609 | if (iaa_high > high)
|
---|
1610 | high = iaa_high;
|
---|
1611 | }
|
---|
1612 |
|
---|
1613 | msg += MSG2HOST16(opt->len) + sizeof(*opt);
|
---|
1614 | }
|
---|
1615 |
|
---|
1616 | /* ã¢ãã¬ã¹ãéããã¦ããªããã°ãSLEEP ç¶æ
|
---|
1617 | ã«é·ç§»ããã*/
|
---|
1618 | if (addrs == 0) {
|
---|
1619 | ct->fsm = DHCP6_FSM_SLEEP;
|
---|
1620 | }
|
---|
1621 |
|
---|
1622 | /* ç¶æ
|
---|
1623 | ã«ä¾åããå¦ç */
|
---|
1624 | switch (ct->fsm) {
|
---|
1625 |
|
---|
1626 | case DHCP6_FSM_BOUND:
|
---|
1627 |
|
---|
1628 | /* RENEW ã¿ã¤ã ã¢ã¦ãã®è¨å® */
|
---|
1629 | if ((rebind > SYSTIM2SEC(time)) && (renew < rebind)) {
|
---|
1630 | ct->next_MRD = SEC2SYSTIM(rebind) - time;
|
---|
1631 | syscall(wai_sem(SEM_DHCP6_CLI_TIMER));
|
---|
1632 | ct->timers[DHCP6C_TIMER_RENEW] = SEC2TIMER(renew) - SYSTIM2TIMER(time);
|
---|
1633 | syscall(sig_sem(SEM_DHCP6_CLI_TIMER));
|
---|
1634 | break;
|
---|
1635 | }
|
---|
1636 | /* break; */ /* ä¸ã«æããã*/
|
---|
1637 |
|
---|
1638 | case DHCP6_FSM_RENEW:
|
---|
1639 |
|
---|
1640 | /* REBIND ã¿ã¤ã ã¢ã¦ãã®è¨å® */
|
---|
1641 | ct->MRD = SEC2SYSTIM(rebind);
|
---|
1642 | if (rebind != DHCP6_MAX_TIME) {
|
---|
1643 | ct->next_MRD = SEC2SYSTIM(high) - time;
|
---|
1644 | syscall(wai_sem(SEM_DHCP6_CLI_TIMER));
|
---|
1645 | ct->timers[DHCP6C_TIMER_REBIND] = SEC2TIMER(rebind) - SYSTIM2TIMER(time);
|
---|
1646 | syscall(sig_sem(SEM_DHCP6_CLI_TIMER));
|
---|
1647 | }
|
---|
1648 | break;
|
---|
1649 |
|
---|
1650 | case DHCP6_FSM_REBIND:
|
---|
1651 |
|
---|
1652 | ct->next_MRD = (SEC2TIMER(high) - time) - time;
|
---|
1653 | break;
|
---|
1654 |
|
---|
1655 | default:
|
---|
1656 | break;
|
---|
1657 | }
|
---|
1658 |
|
---|
1659 | /* DEPREF ã¿ã¤ã ã¢ã¦ãã®è¨å® */
|
---|
1660 | if (depref != DHCP6_MAX_TIME) {
|
---|
1661 | syscall(wai_sem(SEM_DHCP6_CLI_TIMER));
|
---|
1662 | ct->timers[DHCP6C_TIMER_DEPREF] = SEC2TIMER(depref) - SYSTIM2TIMER(time);
|
---|
1663 | syscall(sig_sem(SEM_DHCP6_CLI_TIMER));
|
---|
1664 | }
|
---|
1665 |
|
---|
1666 | /* EXPIRE ã¿ã¤ã ã¢ã¦ãã®è¨å® */
|
---|
1667 | if (low != DHCP6_MAX_TIME) {
|
---|
1668 | syscall(wai_sem(SEM_DHCP6_CLI_TIMER));
|
---|
1669 | ct->timers[DHCP6C_TIMER_EXPIRE] = SEC2TIMER(low) - SYSTIM2TIMER(time);
|
---|
1670 | syscall(sig_sem(SEM_DHCP6_CLI_TIMER));
|
---|
1671 | }
|
---|
1672 | }
|
---|
1673 |
|
---|
1674 | /*
|
---|
1675 | * start_init -- INIT ç¶æ
|
---|
1676 | ã«é·ç§»ããã
|
---|
1677 | */
|
---|
1678 |
|
---|
1679 | static void
|
---|
1680 | start_init (T_DHCP6_CLI_CONTEXT *ct)
|
---|
1681 | {
|
---|
1682 | /* ã¿ã¤ã ã¢ã¦ããè¨å®ããããRFC3315 (17.1.2) åç
|
---|
1683 | §ã*/
|
---|
1684 | ct->IRT = TMO_SOL_TIMEOUT;
|
---|
1685 | ct->MRT = TMO_SOL_MAX_RT;
|
---|
1686 | ct->MRC = 0;
|
---|
1687 |
|
---|
1688 | /* DHCP6_CLI_CFG_ONE_TRYãæå®ããã¦ããªããã°æ¨æºã¿ã¤ã ã¢ã¦ãã¾ã§åéããã*/
|
---|
1689 | #if defined(DHCP6_CLI_CFG_ONE_TRY)
|
---|
1690 | ct->MRD = 0;
|
---|
1691 | #else
|
---|
1692 | ct->MRD = TMO_DHCP6C_NORMAL;
|
---|
1693 | #endif
|
---|
1694 |
|
---|
1695 | /* åéåæ°ã¨ãã©ã³ã¶ã¯ã·ã§ã³ ID ãè¨å®ããã*/
|
---|
1696 | init_retrans(ct);
|
---|
1697 |
|
---|
1698 | /* RFC3315 (17.1.2) ã®è¦å®ã«å¾ã£ã¦ã¿ã¤ã ã¢ã¦ãã調æ´ããã*/
|
---|
1699 | if (ct->RT <= ct->IRT)
|
---|
1700 | ct->RT = ct->IRT + (ct->IRT - ct->RT);
|
---|
1701 | if (ct->RT <= ct->IRT)
|
---|
1702 | ct->RT = ct->IRT + SEC2SYSTIM(1);
|
---|
1703 |
|
---|
1704 | /* ADVERTISE ã¡ãã»ã¼ã¸ã®åä¿¡ã¿ã¤ã ã¢ã¦ããè¨å®ããã*/
|
---|
1705 | syscall(wai_sem(SEM_DHCP6_CLI_TIMER));
|
---|
1706 | ct->timers[DHCP6C_TIMER_RCV_ADV] = SYSTIM2TIMER(ct->MRD);
|
---|
1707 | syscall(sig_sem(SEM_DHCP6_CLI_TIMER));
|
---|
1708 |
|
---|
1709 | /*
|
---|
1710 | * SOLICIT ã¡ãã»ã¼ã¸éä¿¡é
|
---|
1711 | 延æéãè¨å®ããã
|
---|
1712 | * ãã ããTMO_SOL_MAX_DELAY ã 1[s]ãªã®ã§ãdly_tsk()ã使ç¨ããã
|
---|
1713 | */
|
---|
1714 | dly_tsk(netapp_rand() % TMO_SOL_MAX_DELAY);
|
---|
1715 |
|
---|
1716 | /* INIT ç¶æ
|
---|
1717 | ã«é·ç§»ããã*/
|
---|
1718 | ct->fsm = DHCP6_FSM_INIT;
|
---|
1719 |
|
---|
1720 | /* SOLICIT ã¡ãã»ã¼ã¸ãéä¿¡ããã*/
|
---|
1721 | ct->flags |= DHCP6C_FLAG_TMOUT_SND_SOL;
|
---|
1722 | syscall(sig_sem(SEM_DHCP6_CLI_READY));
|
---|
1723 | }
|
---|
1724 |
|
---|
1725 | /*
|
---|
1726 | * start_select -- REQUEST ã¡ãã»ã¼ã¸ãéä¿¡ã㦠SELECT ç¶æ
|
---|
1727 | ã«é·ç§»ããã
|
---|
1728 | */
|
---|
1729 |
|
---|
1730 | static void
|
---|
1731 | start_select (T_DHCP6_CLI_CONTEXT *ct)
|
---|
1732 | {
|
---|
1733 | /* æå¹ãª ADVERTISE ã¡ãã»ã¼ã¸ãåä¿¡ãã¦ããªããã° SLEEP ç¶æ
|
---|
1734 | ã«é·ç§»ããã*/
|
---|
1735 | if (ct->adv_msg == NULL) {
|
---|
1736 | ct->fsm = DHCP6_FSM_SLEEP;
|
---|
1737 | return;
|
---|
1738 | }
|
---|
1739 |
|
---|
1740 | /* ã¿ã¤ã ã¢ã¦ããè¨å®ããããRFC3315 (18.1.1) åç
|
---|
1741 | §ã*/
|
---|
1742 | ct->IRT = TMO_REQ_TIMEOUT;
|
---|
1743 | ct->MRT = TMO_REQ_MAX_RT;
|
---|
1744 | ct->MRC = TMO_REQ_MAX_RC;
|
---|
1745 | ct->MRD = 0;
|
---|
1746 |
|
---|
1747 | /* åéåæ°ã¨ãã©ã³ã¶ã¯ã·ã§ã³ ID ãè¨å®ããã*/
|
---|
1748 | init_retrans(ct);
|
---|
1749 |
|
---|
1750 | /* REPLY ã¡ãã»ã¼ã¸ã®åä¿¡ã¿ã¤ã ã¢ã¦ããè¨å®ããã*/
|
---|
1751 | syscall(wai_sem(SEM_DHCP6_CLI_TIMER));
|
---|
1752 | ct->timers[DHCP6C_TIMER_RCV_REPLY] = SYSTIM2TIMER(ct->MRD);
|
---|
1753 | syscall(sig_sem(SEM_DHCP6_CLI_TIMER));
|
---|
1754 |
|
---|
1755 | /* SELECT ç¶æ
|
---|
1756 | ã«é·ç§»ããã*/
|
---|
1757 | ct->fsm = DHCP6_FSM_SELECT;
|
---|
1758 |
|
---|
1759 | /* REQUEST ã¡ãã»ã¼ã¸ãéä¿¡ããã*/
|
---|
1760 | ct->flags |= DHCP6C_FLAG_TMOUT_SND_REQ;
|
---|
1761 | syscall(sig_sem(SEM_DHCP6_CLI_READY));
|
---|
1762 | }
|
---|
1763 |
|
---|
1764 | /*
|
---|
1765 | * start_bound -- BOUND ç¶æ
|
---|
1766 | ã«é·ç§»ããã
|
---|
1767 | */
|
---|
1768 |
|
---|
1769 | static void
|
---|
1770 | start_bound (T_DHCP6_CLI_CONTEXT *ct)
|
---|
1771 | {
|
---|
1772 | /* æå¹ãªãªã¼ã¹æ
|
---|
1773 | å ±ãç¡ããã° SLEEP ã«é·ç§»ããã*/
|
---|
1774 | if (ct->act_msg == NULL)
|
---|
1775 | ct->fsm = DHCP6_FSM_SLEEP;
|
---|
1776 |
|
---|
1777 | /* BOUND ç¶æ
|
---|
1778 | ã«é·ç§»ããã*/
|
---|
1779 | ct->fsm = DHCP6_FSM_BOUND;
|
---|
1780 |
|
---|
1781 | /* ãªã¼ã¹æ
|
---|
1782 | å ±ãè¨å®ããã*/
|
---|
1783 | set_lease(ct);
|
---|
1784 |
|
---|
1785 | /* æå¹æéã決å®ããã*/
|
---|
1786 | eval_expire(ct);
|
---|
1787 |
|
---|
1788 | }
|
---|
1789 | /*
|
---|
1790 | * start_renew -- RENEW ç¶æ
|
---|
1791 | ã«é·ç§»ããã
|
---|
1792 | */
|
---|
1793 |
|
---|
1794 | static void
|
---|
1795 | start_renew (T_DHCP6_CLI_CONTEXT *ct)
|
---|
1796 | {
|
---|
1797 | /* æå¹ãªãªã¼ã¹æ
|
---|
1798 | å ±ãç¡ããã° SLEEP ã«é·ç§»ããã*/
|
---|
1799 | if (ct->act_msg == NULL) {
|
---|
1800 | ct->fsm = DHCP6_FSM_SLEEP;
|
---|
1801 | return;
|
---|
1802 | }
|
---|
1803 |
|
---|
1804 | /* ã¿ã¤ã ã¢ã¦ããè¨å®ããããRFC3315 (18.1.3) åç
|
---|
1805 | §ã*/
|
---|
1806 | ct->IRT = TMO_REN_TIMEOUT;
|
---|
1807 | ct->MRT = TMO_REN_MAX_RT;
|
---|
1808 | ct->MRC = 0;
|
---|
1809 | ct->MRD = ct->next_MRD;
|
---|
1810 |
|
---|
1811 | /* åéåæ°ã¨ãã©ã³ã¶ã¯ã·ã§ã³ ID ãè¨å®ããã*/
|
---|
1812 | init_retrans(ct);
|
---|
1813 |
|
---|
1814 | /* REFRESH ã¡ãã»ã¼ã¸ã¿ã¤ããè¨å®ããã*/
|
---|
1815 | ct->refresh_type = DHCP6_RENEW;
|
---|
1816 |
|
---|
1817 | /* REPLY ã¡ãã»ã¼ã¸ã®åä¿¡ã¿ã¤ã ã¢ã¦ããè¨å®ããã*/
|
---|
1818 | syscall(wai_sem(SEM_DHCP6_CLI_TIMER));
|
---|
1819 | ct->timers[DHCP6C_TIMER_RCV_REPLY] = SYSTIM2TIMER(ct->MRD);
|
---|
1820 | syscall(sig_sem(SEM_DHCP6_CLI_TIMER));
|
---|
1821 |
|
---|
1822 | /* RENEW ç¶æ
|
---|
1823 | ã«é·ç§»ããã*/
|
---|
1824 | ct->fsm = DHCP6_FSM_RENEW;
|
---|
1825 |
|
---|
1826 | /* REFRESH ã¡ãã»ã¼ã¸ãéä¿¡ããã*/
|
---|
1827 | ct->flags |= DHCP6C_FLAG_TMOUT_SND_REF;
|
---|
1828 | syscall(sig_sem(SEM_DHCP6_CLI_READY));
|
---|
1829 | }
|
---|
1830 |
|
---|
1831 | /*
|
---|
1832 | * start_rebind -- REBIND ç¶æ
|
---|
1833 | ã«é·ç§»ããã
|
---|
1834 | */
|
---|
1835 |
|
---|
1836 | static void
|
---|
1837 | start_rebind (T_DHCP6_CLI_CONTEXT *ct)
|
---|
1838 | {
|
---|
1839 | /* æå¹ãªãªã¼ã¹æ
|
---|
1840 | å ±ãç¡ããã° SLEEP ã«é·ç§»ããã*/
|
---|
1841 | if (ct->act_msg == NULL) {
|
---|
1842 | ct->fsm = DHCP6_FSM_SLEEP;
|
---|
1843 | return;
|
---|
1844 | }
|
---|
1845 |
|
---|
1846 | /* ã¿ã¤ã ã¢ã¦ããè¨å®ããããRFC3315 (18.1.4) åç
|
---|
1847 | §ã*/
|
---|
1848 | ct->IRT = TMO_REB_TIMEOUT;
|
---|
1849 | ct->MRT = TMO_REB_MAX_RT;
|
---|
1850 | ct->MRC = 0;
|
---|
1851 | ct->MRD = ct->next_MRD;
|
---|
1852 |
|
---|
1853 | /* åéåæ°ã¨ãã©ã³ã¶ã¯ã·ã§ã³ ID ãè¨å®ããã*/
|
---|
1854 | init_retrans(ct);
|
---|
1855 |
|
---|
1856 | /* REFRESH ã¡ãã»ã¼ã¸ã¿ã¤ããè¨å®ããã*/
|
---|
1857 | ct->refresh_type = DHCP6_REBIND;
|
---|
1858 |
|
---|
1859 | /* REPLY ã¡ãã»ã¼ã¸ã®åä¿¡ã¿ã¤ã ã¢ã¦ããè¨å®ããã*/
|
---|
1860 | syscall(wai_sem(SEM_DHCP6_CLI_TIMER));
|
---|
1861 | ct->timers[DHCP6C_TIMER_RCV_REPLY] = SYSTIM2TIMER(ct->MRD);
|
---|
1862 | syscall(sig_sem(SEM_DHCP6_CLI_TIMER));
|
---|
1863 |
|
---|
1864 | /* éä¿¡å
|
---|
1865 | ã¢ãã¬ã¹ãè¨å®ããã*/
|
---|
1866 | ct->dst.ipaddr = in6_addr_all_DHCP_relay_servers;
|
---|
1867 |
|
---|
1868 | /* REBIND ç¶æ
|
---|
1869 | ã«é·ç§»ããã*/
|
---|
1870 | ct->fsm = DHCP6_FSM_REBIND;
|
---|
1871 |
|
---|
1872 | /* REFRESH ã¡ãã»ã¼ã¸ãéä¿¡ããã*/
|
---|
1873 | ct->flags |= DHCP6C_FLAG_TMOUT_SND_REF;
|
---|
1874 | syscall(sig_sem(SEM_DHCP6_CLI_READY));
|
---|
1875 | }
|
---|
1876 |
|
---|
1877 | /*
|
---|
1878 | * start_rel_info -- ã¢ãã¬ã¹æ
|
---|
1879 | å ±ã解æ¾ããã
|
---|
1880 | *
|
---|
1881 | * 注æ: DHCPv6 ã® RFC3315 ã«ã¯ç¡ã
|
---|
1882 | */
|
---|
1883 |
|
---|
1884 | static void
|
---|
1885 | start_rel_info (T_DHCP6_CLI_CONTEXT *ct)
|
---|
1886 | {
|
---|
1887 | /* å
|
---|
1888 | ¨ã¦ã® TIMER ããã£ã³ã»ã«ããã*/
|
---|
1889 | cancel_all_timers(ct);
|
---|
1890 |
|
---|
1891 | /* ãªã¼ã¹æ
|
---|
1892 | å ±ã解æ¾ããã*/
|
---|
1893 | rel_lease(ct);
|
---|
1894 |
|
---|
1895 | /* æå¹ãªãªã¼ã¹æ
|
---|
1896 | å ±ãç¡ããã° SLEEP ã«é·ç§»ããã*/
|
---|
1897 | if (ct->act_msg == NULL) {
|
---|
1898 | ct->fsm = DHCP6_FSM_SLEEP;
|
---|
1899 | return;
|
---|
1900 | }
|
---|
1901 |
|
---|
1902 | /* ã¿ã¤ã ã¢ã¦ããè¨å®ããããRFC3315 (18.1.1) åç
|
---|
1903 | §ã*/
|
---|
1904 | ct->IRT = TMO_REL_TIMEOUT;
|
---|
1905 | ct->MRT = 0;
|
---|
1906 | ct->MRC = TMO_REL_MAX_RC;
|
---|
1907 | ct->MRD = 0;
|
---|
1908 |
|
---|
1909 | /* åéåæ°ã¨ãã©ã³ã¶ã¯ã·ã§ã³ ID ãè¨å®ããã*/
|
---|
1910 | init_retrans(ct);
|
---|
1911 |
|
---|
1912 | /* REL_INFO ç¶æ
|
---|
1913 | ã«é·ç§»ããã*/
|
---|
1914 | ct->fsm = DHCP6_FSM_REL_INFO;
|
---|
1915 |
|
---|
1916 | /* RELEASE ã¡ãã»ã¼ã¸ãéä¿¡ããã*/
|
---|
1917 | ct->flags |= DHCP6C_FLAG_TMOUT_SND_REL;
|
---|
1918 | syscall(sig_sem(SEM_DHCP6_CLI_READY));
|
---|
1919 | }
|
---|
1920 |
|
---|
1921 | #if defined(DHCP6_CLI_CFG_IA_NA) || defined(DHCP6_CLI_CFG_IA_TA) || defined(DHCP6_CLI_CFG_IA_PD)
|
---|
1922 |
|
---|
1923 | /*
|
---|
1924 | * solicit_ia_option -- SOLICIT ã¡ãã»ã¼ã¸ã® IA_NA/IA_TA/IA_PD ãªãã·ã§ã³ã®å
|
---|
1925 | ±éé¨åã追å ããã
|
---|
1926 | */
|
---|
1927 |
|
---|
1928 | static void
|
---|
1929 | solicit_ia_option (T_DHCP6_CLI_CONTEXT *ct, uint8_t *msg, uint_t code)
|
---|
1930 | {
|
---|
1931 | T_DHCP6_OPT_IA_TA *ia;
|
---|
1932 | uint_t off, len;
|
---|
1933 |
|
---|
1934 | /* ãªãã·ã§ã³ã³ã¼ããè¨å®ããã*/
|
---|
1935 | ia = (T_DHCP6_OPT_IA_TA*)msg;
|
---|
1936 | HOST2MSG16(ia->code, code);
|
---|
1937 |
|
---|
1938 | /* IAID ãè¨å®ããã*/
|
---|
1939 | if (sizeof(ct->sc->ifaddr.lladdr) > sizeof(uint32_t)) {
|
---|
1940 | off = sizeof(ct->sc->ifaddr.lladdr) - 4;
|
---|
1941 | len = 4;
|
---|
1942 | }
|
---|
1943 | else {
|
---|
1944 | off = 0;
|
---|
1945 | len = sizeof(ct->sc->ifaddr.lladdr);
|
---|
1946 | }
|
---|
1947 | memcpy((uint8_t*)&ia->iaid, ((uint8_t*)ct->sc->ifaddr.lladdr) + off, len);
|
---|
1948 | }
|
---|
1949 |
|
---|
1950 | /*
|
---|
1951 | * solicit_iaaddr_option -- SOLICIT ã¡ãã»ã¼ã¸ã® IAADDR ãªãã·ã§ã³ã追å ããã
|
---|
1952 | */
|
---|
1953 |
|
---|
1954 | static uint_t
|
---|
1955 | solicit_iaaddr_option (T_DHCP6_CLI_CONTEXT *ct, uint8_t *msg, uint_t code)
|
---|
1956 | {
|
---|
1957 | T_DHCP6_OPT_IAADDR *iaa;
|
---|
1958 | uint32_t t1, t2;
|
---|
1959 | uint8_t *opt;
|
---|
1960 | uint_t len;
|
---|
1961 |
|
---|
1962 | /*
|
---|
1963 | * æå¹ãªãªã¼ã¹ã»ã¡ãã»ã¼ã¸ãæ®ã£ã¦ãã¦ã
|
---|
1964 | * æå®ããããªãã·ã§ã³ï¼IA_NA/IA_TA/IA_PDï¼ãããå ´åã¯
|
---|
1965 | * åãã¢ãã¬ã¹ãè¦æ±ããã
|
---|
1966 | */
|
---|
1967 | if ((ct->act_msg == NULL) || (opt = find_msg_option(ct->act_msg, code, 0)) == NULL)
|
---|
1968 | return 0;
|
---|
1969 |
|
---|
1970 | /* ãªãã·ã§ã³ã³ã¼ããè¨å®ããã*/
|
---|
1971 | iaa = (T_DHCP6_OPT_IAADDR*)msg;
|
---|
1972 | HOST2MSG16(iaa->code, DHCP6_OPT_IAADDR);
|
---|
1973 |
|
---|
1974 | /* IAADDR ãªãã·ã§ã³ãé¤ãããªãã·ã§ã³é·ãè¨å®ããã*/
|
---|
1975 | HOST2MSG16(iaa->len, sizeof(*iaa) - sizeof(T_DHCP6_OPTION));
|
---|
1976 |
|
---|
1977 | /* ã¢ãã¬ã¹ãè¨å®ããã*/
|
---|
1978 | len = code == DHCP6_OPT_IA_TA ? sizeof(T_DHCP6_OPT_IA_TA)
|
---|
1979 | : sizeof(T_DHCP6_OPT_IA_NA_PD);
|
---|
1980 | memcpy(&iaa->addr, opt + sizeof(T_DHCP6_OPTION) + len, sizeof(iaa->addr));
|
---|
1981 |
|
---|
1982 | /* T1ãT2 ãè¨å®ããã*/
|
---|
1983 | t1 = TMO_DHCP6C_REQ_LEASE / 2;
|
---|
1984 | t2 = t1 + (t1 / 2);
|
---|
1985 | HOST2MSG32(iaa->prefer, t1);
|
---|
1986 | HOST2MSG32(iaa->valid, t2);
|
---|
1987 |
|
---|
1988 | return sizeof(*iaa);
|
---|
1989 | }
|
---|
1990 |
|
---|
1991 | #endif /* of #if defined(DHCP6_CLI_CFG_IA_NA) || defined(DHCP6_CLI_CFG_IA_TA) || defined(DHCP6_CLI_CFG_IA_PD) */
|
---|
1992 |
|
---|
1993 | /*
|
---|
1994 | * solicit_ia_na_pd -- SOLICIT ã¡ãã»ã¼ã¸ã® IA_NA/IA_PD ãªãã·ã§ã³ã追å ããã
|
---|
1995 | */
|
---|
1996 |
|
---|
1997 | #if defined(DHCP6_CLI_CFG_IA_NA) || defined(DHCP6_CLI_CFG_IA_PD)
|
---|
1998 |
|
---|
1999 | static uint8_t *
|
---|
2000 | solicit_ia_na_pd (T_DHCP6_CLI_CONTEXT *ct, uint8_t *msg, uint_t code)
|
---|
2001 | {
|
---|
2002 | T_DHCP6_OPT_IA_NA_PD *ia;
|
---|
2003 | uint32_t t1, t2;
|
---|
2004 | uint_t len;
|
---|
2005 |
|
---|
2006 | /* IA_NA/IA_TA/IA_PD ãªãã·ã§ã³ã®å
|
---|
2007 | ±éé¨åã追å ããã*/
|
---|
2008 | solicit_ia_option(ct, msg, code);
|
---|
2009 | ia = (T_DHCP6_OPT_IA_NA_PD*)msg;
|
---|
2010 |
|
---|
2011 | /* T1ãT2 ãè¨å®ããã*/
|
---|
2012 | t1 = TMO_DHCP6C_REQ_LEASE / 2;
|
---|
2013 | t2 = t1 + (t1 / 2);
|
---|
2014 | HOST2MSG32(ia->renew, SYSTIM2SEC(t1));
|
---|
2015 | HOST2MSG32(ia->rebind, SYSTIM2SEC(t2));
|
---|
2016 |
|
---|
2017 | /*
|
---|
2018 | * æå¹ãªãªã¼ã¹ã»ã¡ãã»ã¼ã¸ãæ®ã£ã¦ãã¦ã
|
---|
2019 | * æå®ããããªãã·ã§ã³ï¼IA_NA/IA_PDï¼ãããå ´åã¯
|
---|
2020 | * åãã¢ãã¬ã¹ãè¦æ±ããã
|
---|
2021 | */
|
---|
2022 | msg += sizeof(*ia);
|
---|
2023 | len = solicit_iaaddr_option(ct, msg, code);
|
---|
2024 |
|
---|
2025 | /* IA_NAIA_TA/IA_PD ãªãã·ã§ã³ãé¤ãããªãã·ã§ã³é·ãè¨å®ããã*/
|
---|
2026 | HOST2MSG16(ia->len, (sizeof(*ia) + len) - sizeof(T_DHCP6_OPTION));
|
---|
2027 |
|
---|
2028 | return msg + len;
|
---|
2029 | }
|
---|
2030 |
|
---|
2031 | #endif /* of #if defined(DHCP6_CLI_CFG_IA_NA) || defined(DHCP6_CLI_CFG_IA_PD) */
|
---|
2032 |
|
---|
2033 | /*
|
---|
2034 | * solicit_ia_ta -- SOLICIT ã¡ãã»ã¼ã¸ã® IA_TA ãªãã·ã§ã³ã追å ããã
|
---|
2035 | */
|
---|
2036 |
|
---|
2037 | #if defined(DHCP6_CLI_CFG_IA_TA)
|
---|
2038 |
|
---|
2039 | static uint8_t *
|
---|
2040 | solicit_ia_ta (T_DHCP6_CLI_CONTEXT *ct, uint8_t *msg)
|
---|
2041 | {
|
---|
2042 | T_DHCP6_OPT_IA_TA *ia;
|
---|
2043 |
|
---|
2044 | /* IA_NA/IA_TA/IA_PD ãªãã·ã§ã³ã®å
|
---|
2045 | ±éé¨åã追å ããã*/
|
---|
2046 | solicit_ia_option(ct, msg, DHCP6_OPT_IA_TA);
|
---|
2047 |
|
---|
2048 | /* IA_NAIA_TA/IA_PD ãªãã·ã§ã³ãé¤ãããªãã·ã§ã³é·ãè¨å®ããã*/
|
---|
2049 | ia = (T_DHCP6_OPT_IA_TA*)msg;
|
---|
2050 | HOST2MSG16(ia->len, sizeof(*ia) - sizeof(T_DHCP6_OPTION));
|
---|
2051 |
|
---|
2052 | /*
|
---|
2053 | * æå¹ãªãªã¼ã¹ã»ã¡ãã»ã¼ã¸ãæ®ã£ã¦ãã¦ã
|
---|
2054 | * æå®ããããªãã·ã§ã³ï¼IA_TAï¼ãããå ´åã¯
|
---|
2055 | * åãã¢ãã¬ã¹ãè¦æ±ããã
|
---|
2056 | */
|
---|
2057 | msg += sizeof(*ia);
|
---|
2058 | return msg + solicit_iaaddr_option(ct, msg, code);
|
---|
2059 | }
|
---|
2060 |
|
---|
2061 | #endif /* of #if defined(DHCP6_CLI_CFG_IA_TA) */
|
---|
2062 |
|
---|
2063 | /*
|
---|
2064 | * setup_solicit_msg -- SOLICIT ã¡ãã»ã¼ã¸ãä½æããã
|
---|
2065 | */
|
---|
2066 |
|
---|
2067 | static ER
|
---|
2068 | setup_solicit_msg (T_DHCP6_CLI_CONTEXT *ct, T_DHCP6_CLI_MSG *lease)
|
---|
2069 | {
|
---|
2070 | uint8_t *head, *msg;
|
---|
2071 |
|
---|
2072 | /* ã¡ãã»ã¼ã¸ã®ãããé¨åãä½æããã*/
|
---|
2073 | if ((head = setup_msg_header(ct, DHCP6_SOLICIT)) == NULL)
|
---|
2074 | return E_PAR;
|
---|
2075 |
|
---|
2076 | if ((msg = common_options(ct, head, DHCP6_SOLICIT, lease)) == NULL)
|
---|
2077 | return E_PAR;
|
---|
2078 |
|
---|
2079 | #if defined(DHCP6_CLI_CFG_IA_NA)
|
---|
2080 |
|
---|
2081 | /* IA_NA ã追å ããã*/
|
---|
2082 | msg = solicit_ia_na_pd(ct, msg, DHCP6_OPT_IA_NA);
|
---|
2083 | #endif
|
---|
2084 |
|
---|
2085 | #if defined(DHCP6_CLI_CFG_IA_TA)
|
---|
2086 |
|
---|
2087 | /* IA_TA ã追å ããã*/
|
---|
2088 | msg = solicit_ia_ta(ct, msg);
|
---|
2089 | #endif
|
---|
2090 |
|
---|
2091 | #if defined(DHCP6_CLI_CFG_IA_PD)
|
---|
2092 |
|
---|
2093 | /* IA_PD ã追å ããã*/
|
---|
2094 | msg = solicit_ia_na_pd(ct, msg, DHCP6_OPT_IA_PD);
|
---|
2095 | #endif
|
---|
2096 |
|
---|
2097 | /* ã¡ãã»ã¼ã¸æ§é ä½é·ãè¨å®ããã*/
|
---|
2098 | ct->snd_msg->len = msg - (uint8_t*)&ct->snd_msg->msg;
|
---|
2099 |
|
---|
2100 | /* éä¿¡å
|
---|
2101 | ã¢ãã¬ã¹ãè¨å®ããã*/
|
---|
2102 | ct->dst.ipaddr = in6_addr_all_DHCP_relay_servers;
|
---|
2103 | return E_OK;
|
---|
2104 | }
|
---|
2105 |
|
---|
2106 | /*
|
---|
2107 | * send_solicit_msg -- SOLICIT ã¡ãã»ã¼ã¸ãéä¿¡ããã
|
---|
2108 | */
|
---|
2109 |
|
---|
2110 | static void
|
---|
2111 | send_solicit_msg (T_DHCP6_CLI_CONTEXT *ct)
|
---|
2112 | {
|
---|
2113 | ER error;
|
---|
2114 |
|
---|
2115 | ct->flags &= ~DHCP6C_FLAG_TMOUT_MASK;
|
---|
2116 | ct->error = E_OK;
|
---|
2117 |
|
---|
2118 | /* ADVERTISE ã¡ãã»ã¼ã¸ã®é¸æãçµäºãã¦ããã°ãSELECT ç¶æ
|
---|
2119 | ã«é·ç§»ããã*/
|
---|
2120 | if (select_adv(ct)) {
|
---|
2121 |
|
---|
2122 | /* ADVERTISE ã¡ãã»ã¼ã¸åä¿¡ã¿ã¤ãã¼ãåæ¢ããã*/
|
---|
2123 | syscall(wai_sem(SEM_DHCP6_CLI_TIMER));
|
---|
2124 | ct->timers[DHCP6C_TIMER_RCV_ADV] = 0;
|
---|
2125 | syscall(sig_sem(SEM_DHCP6_CLI_TIMER));
|
---|
2126 |
|
---|
2127 | /* REQUEST ã¡ãã»ã¼ã¸ãéä¿¡ã㦠SELECT ç¶æ
|
---|
2128 | ã«é·ç§»ããã*/
|
---|
2129 | start_select(ct);
|
---|
2130 | return;
|
---|
2131 | }
|
---|
2132 |
|
---|
2133 | /* åéä¿¡åæ°ã確èªããã*/
|
---|
2134 | if ((ct->MRC != 0) && (ct->txcount > ct->MRC)) {
|
---|
2135 | ct->error = E_TMOUT;
|
---|
2136 | return;
|
---|
2137 | }
|
---|
2138 |
|
---|
2139 | /* SOLICIT ã¡ãã»ã¼ã¸ãä½æããã*/
|
---|
2140 | if ((error = setup_solicit_msg(ct, NULL)) != E_OK) {
|
---|
2141 | syslog(LOG_NOTICE, "[DHCP6C] error, setup solicit message: %s.", itron_strerror(error));
|
---|
2142 | ct->error = error;
|
---|
2143 | return;
|
---|
2144 | }
|
---|
2145 |
|
---|
2146 | /* SOLICIT ã¡ãã»ã¼ã¸ãéä¿¡ããã*/
|
---|
2147 | error = UDP_SND_DAT(ct->cepid, &ct->dst, &ct->snd_msg->msg, ct->snd_msg->len, TMO_NBLK);
|
---|
2148 | if (error != E_WBLK) {
|
---|
2149 | syslog(LOG_NOTICE, "[DHCP6C] error, send solicit message: %s.", itron_strerror(error));
|
---|
2150 | ct->error = error;
|
---|
2151 | return;
|
---|
2152 | }
|
---|
2153 |
|
---|
2154 | /* åéä¿¡ã¿ã¤ã ã¢ã¦ããè¨å®ããã*/
|
---|
2155 | syscall(wai_sem(SEM_DHCP6_CLI_TIMER));
|
---|
2156 | ct->timers[DHCP6C_TIMER_SND_SOL] = SYSTIM2TIMER(ct->RT);
|
---|
2157 | syscall(sig_sem(SEM_DHCP6_CLI_TIMER));
|
---|
2158 |
|
---|
2159 | /* åéä¿¡ã¿ã¤ã ã¢ã¦ããæ´æ°ããã*/
|
---|
2160 | advance_retrans(ct);
|
---|
2161 | }
|
---|
2162 |
|
---|
2163 | /*
|
---|
2164 | * request_ia_option -- REQUEST ã¡ãã»ã¼ã¸ã® IA_NA/IA_TA/IA_PD ãªãã·ã§ã³ã®å
|
---|
2165 | ±éé¨åã追å ããã
|
---|
2166 | */
|
---|
2167 |
|
---|
2168 | #if defined(DHCP6_CLI_CFG_IA_NA) || defined(DHCP6_CLI_CFG_IA_TA) || defined(DHCP6_CLI_CFG_IA_PD)
|
---|
2169 |
|
---|
2170 | static uint8_t *
|
---|
2171 | request_ia_option (T_DHCP6_CLI_CONTEXT *ct, uint8_t *msg, uint_t code, uint8_t *lease)
|
---|
2172 | {
|
---|
2173 | T_DHCP6_OPT_IA_NA_PD *dst, *src;
|
---|
2174 |
|
---|
2175 | dst = (T_DHCP6_OPT_IA_NA_PD*)msg;
|
---|
2176 | src = (T_DHCP6_OPT_IA_NA_PD*)lease;
|
---|
2177 |
|
---|
2178 | /* ãªãã·ã§ã³ã³ã¼ããè¨å®ããã*/
|
---|
2179 | HOST2MSG16(dst->code, code);
|
---|
2180 |
|
---|
2181 | /* IA_NAIA_TA/IA_PD ãªãã·ã§ã³ãé¤ãããªãã·ã§ã³é·ãè¨å®ããã*/
|
---|
2182 | HOST2MSG16(dst->len, sizeof(*dst) - (sizeof(dst->code) + sizeof(dst->len)));
|
---|
2183 |
|
---|
2184 | /* ADVERTISE ã¡ãã»ã¼ã¸ãã IA ID ãã³ãã¼ããã*/
|
---|
2185 | memcpy(&dst->iaid, &src->iaid, sizeof(src->iaid));
|
---|
2186 |
|
---|
2187 | return msg + sizeof(uint16_t) * 2 + sizeof(uint32_t);
|
---|
2188 | }
|
---|
2189 |
|
---|
2190 | #endif /* of #if defined(DHCP6_CLI_CFG_IA_NA) || defined(DHCP6_CLI_CFG_IA_TA) || defined(DHCP6_CLI_CFG_IA_PD) */
|
---|
2191 |
|
---|
2192 | /*
|
---|
2193 | * request_ia_na_pd -- REQUEST ã¡ãã»ã¼ã¸ã® IA_NA/IA_PD ãªãã·ã§ã³ã追å ããã
|
---|
2194 | */
|
---|
2195 |
|
---|
2196 | #if defined(DHCP6_CLI_CFG_IA_NA) || defined(DHCP6_CLI_CFG_IA_PD)
|
---|
2197 |
|
---|
2198 | static uint8_t *
|
---|
2199 | request_ia_na_pd (T_DHCP6_CLI_CONTEXT *ct, uint8_t *msg, uint_t msg_type, uint_t opt_code, T_DHCP6_CLI_MSG *lease)
|
---|
2200 | {
|
---|
2201 | T_DHCP6_OPT_IA_NA_PD *dia, *sia;
|
---|
2202 | T_DHCP6_OPT_IAADDR *diaa, *siaa;
|
---|
2203 | uint8_t *opt;
|
---|
2204 | uint32_t t1, t2;
|
---|
2205 | uint_t ix, nsiaa;
|
---|
2206 |
|
---|
2207 | /* ADVERTISE ã¡ãã»ã¼ã¸ã«æå®ããããªãã·ã§ã³ããããã¨ã確èªããã*/
|
---|
2208 | if ((opt = find_msg_option(lease, opt_code, 0)) == NULL)
|
---|
2209 | return msg;
|
---|
2210 |
|
---|
2211 | /* IA_NA/IA_TA/IA_PD ãªãã·ã§ã³ã®å
|
---|
2212 | ±éé¨åã追å ããã*/
|
---|
2213 | dia = (T_DHCP6_OPT_IA_NA_PD*)msg;
|
---|
2214 | sia = (T_DHCP6_OPT_IA_NA_PD*)opt;
|
---|
2215 | msg = request_ia_option(ct, msg, opt_code, opt);
|
---|
2216 |
|
---|
2217 | /* T1ãT2 ã決å®ããã*/
|
---|
2218 | switch (msg_type) {
|
---|
2219 | case DHCP6_REQUEST:
|
---|
2220 | case DHCP6_RENEW:
|
---|
2221 | case DHCP6_REBIND:
|
---|
2222 | t1 = SYSTIM2TIMER(TMO_DHCP6C_REQ_LEASE);
|
---|
2223 | t2 = t1 + (t1 / 2);
|
---|
2224 | break;
|
---|
2225 |
|
---|
2226 | case DHCP6_CONFIRM:
|
---|
2227 | case DHCP6_RELEASE:
|
---|
2228 | case DHCP6_DECLINE:
|
---|
2229 | t1 = t2 = 0;
|
---|
2230 | break;
|
---|
2231 |
|
---|
2232 | default:
|
---|
2233 | syslog(LOG_NOTICE, "[DHCP6C] unkown msg_type in setup IA_NA/IA_PD for request message: %d.", msg_type);
|
---|
2234 | return NULL;
|
---|
2235 | break;
|
---|
2236 | }
|
---|
2237 |
|
---|
2238 | /* T1ãT2 ãè¨å®ããã*/
|
---|
2239 | HOST2MSG32(dia->renew, t1);
|
---|
2240 | HOST2MSG32(dia->rebind, t2);
|
---|
2241 | msg += sizeof(dia->renew) + sizeof(dia->rebind);
|
---|
2242 |
|
---|
2243 | /* IAADDR ãªãã·ã§ã³ãè¨å®ããã*/
|
---|
2244 | nsiaa = ((MSG2HOST16(sia->len) & ~DHCP6C_IAA_FLAG_MASK) - (sizeof(*sia) - (sizeof(sia->code) + sizeof(sia->len)))) / sizeof(*siaa);
|
---|
2245 |
|
---|
2246 | for (ix = 0; ix <nsiaa; ix++) {
|
---|
2247 | diaa = (T_DHCP6_OPT_IAADDR*)(msg + sizeof(*diaa) * ix);
|
---|
2248 | siaa = (T_DHCP6_OPT_IAADDR*)((opt + sizeof(*sia)) + sizeof(*siaa) * ix);
|
---|
2249 |
|
---|
2250 | /* ã¢ãã¬ã¹ã®æå¹æéãåãã¦ããã°ã¹ãããããã*/
|
---|
2251 | if (MSG2HOST16(siaa->len) & DHCP6C_IAA_FLAG_EXPIRED)
|
---|
2252 | continue;
|
---|
2253 |
|
---|
2254 | /* ã³ã¼ãã¨é·ããè¨å®ããã*/
|
---|
2255 | memcpy(&diaa->code, &siaa->code, sizeof(siaa->code));
|
---|
2256 | HOST2MSG16(diaa->len, MSG2HOST16(siaa->len) & ~DHCP6C_IAA_FLAG_MASK);
|
---|
2257 | msg += sizeof(dia->code) + sizeof(dia->len);
|
---|
2258 |
|
---|
2259 | /* IPv6 ã¢ãã¬ã¹ãã³ãã¼ããã*/
|
---|
2260 | memcpy(&diaa->addr, &siaa->addr, sizeof(siaa->addr));
|
---|
2261 | msg += sizeof(diaa->addr);
|
---|
2262 |
|
---|
2263 | /* T1ãT2 ã決å®ããã*/
|
---|
2264 | switch (msg_type) {
|
---|
2265 | case DHCP6_REQUEST:
|
---|
2266 | case DHCP6_RENEW:
|
---|
2267 | case DHCP6_REBIND:
|
---|
2268 | t1 = SYSTIM2TIMER(TMO_DHCP6C_REQ_LEASE);
|
---|
2269 | t2 = t1 + 300;
|
---|
2270 | break;
|
---|
2271 |
|
---|
2272 | case DHCP6_CONFIRM:
|
---|
2273 | case DHCP6_RELEASE:
|
---|
2274 | case DHCP6_DECLINE:
|
---|
2275 | t1 = t2 = 0;
|
---|
2276 | break;
|
---|
2277 |
|
---|
2278 | default:
|
---|
2279 | syslog(LOG_NOTICE, "[DHCP6C] unknown msg_type in setup IA_NA/IA_PD for request: %d.", msg_type);
|
---|
2280 | return NULL;
|
---|
2281 | break;
|
---|
2282 | }
|
---|
2283 |
|
---|
2284 | /* T1ãT2 ãè¨å®ããã*/
|
---|
2285 | HOST2MSG32(diaa->prefer, t1);
|
---|
2286 | HOST2MSG32(diaa->valid, t2);
|
---|
2287 | msg += sizeof(diaa->prefer) + sizeof(diaa->valid);
|
---|
2288 |
|
---|
2289 | /* IAADDR ã«ä»å ãªãã·ã§ã³ã追å ãããå
|
---|
2290 | éããã*/
|
---|
2291 | }
|
---|
2292 |
|
---|
2293 | HOST2MSG16(((T_DHCP6_OPTION*)dia)->len,
|
---|
2294 | MSG2HOST16(((T_DHCP6_OPTION*)dia)->len) + (msg - (uint8_t*)dia) - sizeof(*dia));
|
---|
2295 | return msg;
|
---|
2296 | }
|
---|
2297 |
|
---|
2298 | #endif /* of #if defined(DHCP6_CLI_CFG_IA_NA) || defined(DHCP6_CLI_CFG_IA_PD) */
|
---|
2299 |
|
---|
2300 | /*
|
---|
2301 | * request_ia_ta -- REQUEST ã¡ãã»ã¼ã¸ã® IA_TA ãªãã·ã§ã³ã追å ããã
|
---|
2302 | */
|
---|
2303 |
|
---|
2304 | #if defined(DHCP6_CLI_CFG_IA_TA)
|
---|
2305 |
|
---|
2306 | static uint8_t *
|
---|
2307 | request_ia_ta (T_DHCP6_CLI_CONTEXT *ct, uint8_t *msg, uint_t msg_type, T_DHCP6_CLI_MSG *lease)
|
---|
2308 | {
|
---|
2309 | T_DHCP6_OPT_IA_TA *dia, *sia;
|
---|
2310 | T_DHCP6_OPT_IAADDR *diaa, *siaa;
|
---|
2311 | uint8_t *opt;
|
---|
2312 | uint32_t t1, t2;
|
---|
2313 | uint_t ix, nsiaa;
|
---|
2314 |
|
---|
2315 | /* ADVERTISE ã¡ãã»ã¼ã¸ã« IA_TA ãªãã·ã§ã³ããããã¨ã確èªããã*/
|
---|
2316 | if ((opt = find_msg_option(lease, DHCP6_OPT_IA_TA, 0)) == NULL)
|
---|
2317 | return msg;
|
---|
2318 |
|
---|
2319 | /* IA_NA/IA_TA/IA_PD ãªãã·ã§ã³ã®å
|
---|
2320 | ±éé¨åã追å ããã*/
|
---|
2321 | dia = (T_DHCP6_OPT_IA_TA*)msg;
|
---|
2322 | sia = (T_DHCP6_OPT_IA_TA*)opt;
|
---|
2323 | msg = request_ia_option(ct, msg, DHCP6_OPT_IA_TA, opt);
|
---|
2324 |
|
---|
2325 | /* IAADDR ãªãã·ã§ã³ãè¨å®ããã*/
|
---|
2326 | nsiaa = ((MSG2HOST16(sia->len) & ~DHCP6C_IAA_FLAG_MASK) - (sizeof(*sia) - (sizeof(sia->code) + sizeof(sia->len)))) / sizeof(*siaa);
|
---|
2327 |
|
---|
2328 | for (ix = 0; ix <nsiaa; ix++) {
|
---|
2329 | diaa = (T_DHCP6_OPT_IAADDR*)(msg + sizeof(*diaa) * ix);
|
---|
2330 | siaa = (T_DHCP6_OPT_IAADDR*)((opt + sizeof(*sia)) + sizeof(*siaa) * ix);
|
---|
2331 |
|
---|
2332 | /* ã¢ãã¬ã¹ã®æå¹æéãåãã¦ããã°ã¹ãããããã*/
|
---|
2333 | if (MSG2HOST16(siaa->len) & DHCP6C_IAA_FLAG_EXPIRED)
|
---|
2334 | continue;
|
---|
2335 |
|
---|
2336 | /* ã³ã¼ãã¨é·ããè¨å®ããã*/
|
---|
2337 | memcpy(diaa->code, siaa->code, sizeof(siaa->code));
|
---|
2338 | diaa->len = HOST2MSG16(MSG2HOST16(siaa->len) & ~DHCP6C_IAA_FLAG_MASK);
|
---|
2339 | msg += sizeof(dia->code) + sizeof(dia->len);
|
---|
2340 |
|
---|
2341 | /* IPv6 ã¢ãã¬ã¹ãã³ãã¼ããã*/
|
---|
2342 | memcpy(diaa->addr, siaa->addr, sizeof(siaa->addr));
|
---|
2343 | msg += sizeof(diaa->addr);
|
---|
2344 |
|
---|
2345 | /* T1ãT2 ã決å®ããã*/
|
---|
2346 | switch (msg_type) {
|
---|
2347 | case DHCP6_REQUEST:
|
---|
2348 | case DHCP6_RENEW:
|
---|
2349 | case DHCP6_REBIND:
|
---|
2350 | t1 = SYSTIM2TIMER(TMO_DHCP6C_REQ_LEASE);
|
---|
2351 | t2 = t1 + 300;
|
---|
2352 | break;
|
---|
2353 |
|
---|
2354 | case DHCP6_CONFIRM:
|
---|
2355 | case DHCP6_RELEASE:
|
---|
2356 | case DHCP6_DECLINE:
|
---|
2357 | t1 = t2 = 0;
|
---|
2358 | break;
|
---|
2359 |
|
---|
2360 | default:
|
---|
2361 | syslog(LOG_NOTICE, "[DHCP6C] unknown msg_type in setup IA_TA for request message: %d.", msg_type);
|
---|
2362 | return NULL;
|
---|
2363 | break;
|
---|
2364 | }
|
---|
2365 |
|
---|
2366 | /* T1ãT2 ãè¨å®ããã*/
|
---|
2367 | HOST2MSG32(diaa->prefer, t1);
|
---|
2368 | HOST2MSG32(diaa->valid, t2);
|
---|
2369 | msg += sizeof(diaa->prefer) + sizeof(diaa->valid);
|
---|
2370 |
|
---|
2371 | /* IAADDR ã«ä»å ãªãã·ã§ã³ã追å ãããå
|
---|
2372 | éããã*/
|
---|
2373 | }
|
---|
2374 |
|
---|
2375 | return msg;
|
---|
2376 | }
|
---|
2377 |
|
---|
2378 | #endif /* of #if defined(DHCP6_CLI_CFG_IA_TA) */
|
---|
2379 |
|
---|
2380 | /*
|
---|
2381 | * setup_request_msg -- REQUEST ã¡ãã»ã¼ã¸ãä½æããã
|
---|
2382 | */
|
---|
2383 |
|
---|
2384 | static ER
|
---|
2385 | setup_request_msg (T_DHCP6_CLI_CONTEXT *ct, T_DHCP6_CLI_MSG *lease, uint_t type)
|
---|
2386 | {
|
---|
2387 | uint8_t *msg;
|
---|
2388 |
|
---|
2389 | /* ã¡ãã»ã¼ã¸ã®ãããé¨åãä½æããã*/
|
---|
2390 | if ((msg = setup_msg_header(ct, type)) == NULL)
|
---|
2391 | return E_PAR;
|
---|
2392 |
|
---|
2393 | if ((msg = common_options(ct, msg, type, lease)) == NULL)
|
---|
2394 | return E_PAR;
|
---|
2395 |
|
---|
2396 | #if defined(DHCP6_CLI_CFG_IA_NA)
|
---|
2397 |
|
---|
2398 | /* IA_NA ã追å ããã*/
|
---|
2399 | msg = request_ia_na_pd(ct, msg, type, DHCP6_OPT_IA_NA, lease);
|
---|
2400 | #endif
|
---|
2401 |
|
---|
2402 | #if defined(DHCP6_CLI_CFG_IA_TA)
|
---|
2403 |
|
---|
2404 | /* IA_TA ã追å ããã*/
|
---|
2405 | msg = request_ia_ta(ct, msg, type, lease);
|
---|
2406 | #endif
|
---|
2407 |
|
---|
2408 | #if defined(DHCP6_CLI_CFG_IA_PD)
|
---|
2409 |
|
---|
2410 | /* IA_PD ã追å ããã*/
|
---|
2411 | msg = request_ia_na_pd(ct, msg, type, DHCP6_OPT_IA_PD, lease);
|
---|
2412 | #endif
|
---|
2413 |
|
---|
2414 | /* ã¡ãã»ã¼ã¸æ§é ä½é·ãè¨å®ããã*/
|
---|
2415 | ct->snd_msg->len = msg - (uint8_t*)&ct->snd_msg->msg;
|
---|
2416 | return E_OK;
|
---|
2417 | }
|
---|
2418 |
|
---|
2419 | /*
|
---|
2420 | * send_request_msg -- REQUEST ã¡ãã»ã¼ã¸ãéä¿¡ããã
|
---|
2421 | */
|
---|
2422 |
|
---|
2423 | static void
|
---|
2424 | send_request_msg (T_DHCP6_CLI_CONTEXT *ct)
|
---|
2425 | {
|
---|
2426 | ER error;
|
---|
2427 |
|
---|
2428 | ct->error = E_OK;
|
---|
2429 | ct->flags &= ~DHCP6C_FLAG_TMOUT_MASK;
|
---|
2430 |
|
---|
2431 | /* ADVERTISE ã¡ãã»ã¼ã¸ãåä¿¡ãã¦ããªããã°ã¨ã©ã¼ */
|
---|
2432 | if (ct->adv_msg == NULL) {
|
---|
2433 | ct->error = E_OBJ;
|
---|
2434 | return;
|
---|
2435 | }
|
---|
2436 |
|
---|
2437 | /* REPLY ã¡ãã»ã¼ã¸ã®é¸æãçµäºãã¦ããã°ãBOUND ç¶æ
|
---|
2438 | ã«é·ç§»ããã*/
|
---|
2439 | if (select_reply(ct)) {
|
---|
2440 |
|
---|
2441 | /* REPLY ã¡ãã»ã¼ã¸åä¿¡ã¿ã¤ãã¼ãåæ¢ããã*/
|
---|
2442 | syscall(wai_sem(SEM_DHCP6_CLI_TIMER));
|
---|
2443 | ct->timers[DHCP6C_TIMER_RCV_REPLY] = 0;
|
---|
2444 | syscall(sig_sem(SEM_DHCP6_CLI_TIMER));
|
---|
2445 |
|
---|
2446 | /* ADVERTISE ã¡ãã»ã¼ã¸ãåä¿¡ã¡ãã»ã¼ã¸æ§é ä½ãªã¹ãã«æ»ãã*/
|
---|
2447 | syscall(wai_sem(SEM_DHCP6_CLI_LOCK));
|
---|
2448 | ct->adv_msg->next = ct->rcv_lst;
|
---|
2449 | ct->rcv_lst = ct->adv_msg;
|
---|
2450 | ct->adv_msg = NULL;
|
---|
2451 | syscall(sig_sem(SEM_DHCP6_CLI_LOCK));
|
---|
2452 |
|
---|
2453 | /* BOUND ç¶æ
|
---|
2454 | ã«é·ç§»ããã*/
|
---|
2455 | start_bound(ct);
|
---|
2456 | return;
|
---|
2457 | }
|
---|
2458 |
|
---|
2459 | /* åéä¿¡åæ°ã確èªããã*/
|
---|
2460 | if ((ct->MRC != 0) && (ct->txcount > ct->MRC)) {
|
---|
2461 | ct->error = E_TMOUT;
|
---|
2462 | return;
|
---|
2463 | }
|
---|
2464 |
|
---|
2465 | /* REQUEST ã¡ãã»ã¼ã¸ãä½æããã*/
|
---|
2466 | if ((error = setup_request_msg(ct, ct->adv_msg, DHCP6_REQUEST)) != E_OK) {
|
---|
2467 | syslog(LOG_NOTICE, "[DHCP6C] error, setup request message: %s.", itron_strerror(error));
|
---|
2468 | ct->error = error;
|
---|
2469 | return;
|
---|
2470 | }
|
---|
2471 |
|
---|
2472 | /* REQUEST ã¡ãã»ã¼ã¸ãéä¿¡ããã*/
|
---|
2473 | error = UDP_SND_DAT(ct->cepid, &ct->dst, &ct->snd_msg->msg, ct->snd_msg->len, TMO_NBLK);
|
---|
2474 | if (error != E_WBLK) {
|
---|
2475 | syslog(LOG_NOTICE, "[DHCP6C] error, send request message: %s.", itron_strerror(error));
|
---|
2476 | ct->error = error;
|
---|
2477 | return;
|
---|
2478 | }
|
---|
2479 |
|
---|
2480 | /* åéä¿¡ã¿ã¤ã ã¢ã¦ããè¨å®ããã*/
|
---|
2481 | syscall(wai_sem(SEM_DHCP6_CLI_TIMER));
|
---|
2482 | ct->timers[DHCP6C_TIMER_SND_REQ] = SYSTIM2TIMER(ct->RT);
|
---|
2483 | syscall(sig_sem(SEM_DHCP6_CLI_TIMER));
|
---|
2484 |
|
---|
2485 | /* åéä¿¡ã¿ã¤ã ã¢ã¦ããæ´æ°ããã*/
|
---|
2486 | advance_retrans(ct);
|
---|
2487 | }
|
---|
2488 |
|
---|
2489 | /*
|
---|
2490 | * send_refresh_msg -- REFRESH ã¡ãã»ã¼ã¸ãéä¿¡ããã
|
---|
2491 | */
|
---|
2492 |
|
---|
2493 | static void
|
---|
2494 | send_refresh_msg (T_DHCP6_CLI_CONTEXT *ct)
|
---|
2495 | {
|
---|
2496 | T_DHCP6_OPT_UNICAST *uc;
|
---|
2497 | ER error;
|
---|
2498 | uint8_t *opt;
|
---|
2499 |
|
---|
2500 | /* æå¹ãªãªã¼ã¹æ
|
---|
2501 | å ±ããªããã°ã¨ã©ã¼ */
|
---|
2502 | ct->flags &= ~DHCP6C_FLAG_TMOUT_MASK;
|
---|
2503 | if (ct->act_msg == NULL)
|
---|
2504 | ct->error = E_OBJ;
|
---|
2505 |
|
---|
2506 | /* REFRESH ã¿ã¤ãã RENEW ã¾ã㯠REBIND ã§ãªããã°ã¨ã©ã¼ */
|
---|
2507 | if (!((ct->refresh_type == DHCP6_RENEW) || (ct->refresh_type == DHCP6_REBIND)))
|
---|
2508 | ct->error = E_PAR;
|
---|
2509 |
|
---|
2510 | /* REPLY ã¡ãã»ã¼ã¸ã®é¸æãçµäºãã¦ããã°ãBOUND ç¶æ
|
---|
2511 | ã«é·ç§»ããã*/
|
---|
2512 | if (select_reply(ct)) {
|
---|
2513 |
|
---|
2514 | /* REPLY ã¡ãã»ã¼ã¸åä¿¡ã¿ã¤ãã¼ãåæ¢ããã*/
|
---|
2515 | syscall(wai_sem(SEM_DHCP6_CLI_TIMER));
|
---|
2516 | ct->timers[DHCP6C_TIMER_RCV_REPLY] = 0;
|
---|
2517 | syscall(sig_sem(SEM_DHCP6_CLI_TIMER));
|
---|
2518 |
|
---|
2519 | /* ãªã¼ã¹æ
|
---|
2520 | å ±ã解æ¾ããã*/
|
---|
2521 | rel_lease(ct);
|
---|
2522 |
|
---|
2523 | /* BOUND ç¶æ
|
---|
2524 | ã«é·ç§»ããã*/
|
---|
2525 | start_bound(ct);
|
---|
2526 | return;
|
---|
2527 | }
|
---|
2528 |
|
---|
2529 | /* åéä¿¡åæ°ã確èªããã*/
|
---|
2530 | if ((ct->MRC != 0) && (ct->txcount > ct->MRC)) {
|
---|
2531 | eval_expire(ct);
|
---|
2532 | return;
|
---|
2533 | }
|
---|
2534 |
|
---|
2535 | /*
|
---|
2536 | * ãµã¼ããã UNICAST ãªãã·ã§ã³ãåä¿¡ããã¨ãã¯
|
---|
2537 | * æå®ããã¢ãã¬ã¹ãéä¿¡å
|
---|
2538 | ã¢ãã¬ã¹ã«è¨å®ããã
|
---|
2539 | */
|
---|
2540 | if ((opt = find_msg_option(ct->act_msg, DHCP6_OPT_UNICAST, sizeof(T_DHCP6_OPT_UNICAST))) != NULL) {
|
---|
2541 | uc = (T_DHCP6_OPT_UNICAST*)opt;
|
---|
2542 | ct->dst.ipaddr = uc->addr;
|
---|
2543 | }
|
---|
2544 |
|
---|
2545 | /* REFRESH (REQUEST) ã¡ãã»ã¼ã¸ãä½æããã*/
|
---|
2546 | if ((error = setup_request_msg(ct, ct->act_msg, ct->refresh_type)) != E_OK) {
|
---|
2547 | syslog(LOG_NOTICE, "[DHCP6C] error, setup refresh message: %s.", itron_strerror(error));
|
---|
2548 | ct->error = error;
|
---|
2549 | return;
|
---|
2550 | }
|
---|
2551 |
|
---|
2552 | /* REFRESH ã¡ãã»ã¼ã¸ãéä¿¡ããã*/
|
---|
2553 | error = UDP_SND_DAT(ct->cepid, &ct->dst, &ct->snd_msg->msg, ct->snd_msg->len, TMO_NBLK);
|
---|
2554 | if (error != E_WBLK) {
|
---|
2555 | syslog(LOG_NOTICE, "[DHCP6C] error, send refresh message: %s.", itron_strerror(error));
|
---|
2556 | ct->error = error;
|
---|
2557 | return;
|
---|
2558 | }
|
---|
2559 |
|
---|
2560 | /* åéä¿¡ã¿ã¤ã ã¢ã¦ããè¨å®ããã*/
|
---|
2561 | syscall(wai_sem(SEM_DHCP6_CLI_TIMER));
|
---|
2562 | ct->timers[DHCP6C_TIMER_SND_REF] = SYSTIM2TIMER(ct->RT);
|
---|
2563 | syscall(sig_sem(SEM_DHCP6_CLI_TIMER));
|
---|
2564 |
|
---|
2565 | /* åéä¿¡ã¿ã¤ã ã¢ã¦ããæ´æ°ããã*/
|
---|
2566 | advance_retrans(ct);
|
---|
2567 | }
|
---|
2568 |
|
---|
2569 | /*
|
---|
2570 | * setup_release_msg -- RELEASE ã¡ãã»ã¼ã¸ãä½æããã
|
---|
2571 | */
|
---|
2572 |
|
---|
2573 | static ER
|
---|
2574 | setup_release_msg (T_DHCP6_CLI_CONTEXT *ct, T_DHCP6_CLI_MSG *lease, uint_t type)
|
---|
2575 | {
|
---|
2576 | uint8_t *msg;
|
---|
2577 |
|
---|
2578 | /* ã¡ãã»ã¼ã¸ã®ãããé¨åãä½æããã*/
|
---|
2579 | if ((msg = setup_msg_header(ct, type)) == NULL)
|
---|
2580 | return E_PAR;
|
---|
2581 |
|
---|
2582 | if ((msg = common_options(ct, msg, type, lease)) == NULL)
|
---|
2583 | return E_PAR;
|
---|
2584 |
|
---|
2585 | #if defined(DHCP6_CLI_CFG_IA_NA)
|
---|
2586 |
|
---|
2587 | /* IA_NA ã追å ããã*/
|
---|
2588 | msg = request_ia_na_pd(ct, msg, type, DHCP6_OPT_IA_NA, lease);
|
---|
2589 | #endif
|
---|
2590 |
|
---|
2591 | #if defined(DHCP6_CLI_CFG_IA_PD)
|
---|
2592 |
|
---|
2593 | /* IA_PD ã追å ããã*/
|
---|
2594 | msg = request_ia_na_pd(ct, msg, type, DHCP6_OPT_IA_PD, lease);
|
---|
2595 | #endif
|
---|
2596 |
|
---|
2597 | /* ã¡ãã»ã¼ã¸æ§é ä½é·ãè¨å®ããã*/
|
---|
2598 | ct->snd_msg->len = msg - (uint8_t*)&ct->snd_msg->msg;
|
---|
2599 | return E_OK;
|
---|
2600 | }
|
---|
2601 |
|
---|
2602 | /*
|
---|
2603 | * send_release_msg -- RELEASE ã¡ãã»ã¼ã¸ãéä¿¡ããã
|
---|
2604 | */
|
---|
2605 |
|
---|
2606 | static void
|
---|
2607 | send_release_msg (T_DHCP6_CLI_CONTEXT *ct)
|
---|
2608 | {
|
---|
2609 | ER error;
|
---|
2610 |
|
---|
2611 | /* æå¹ãª REPLY ã¡ãã»ã¼ã¸ãåä¿¡ãã¦ããªããã°ã¨ã©ã¼ */
|
---|
2612 | ct->flags &= ~DHCP6C_FLAG_TMOUT_MASK;
|
---|
2613 | if (ct->act_msg == NULL)
|
---|
2614 | ct->error = E_OBJ;
|
---|
2615 |
|
---|
2616 | /* æå¹ãª REPLY ã¡ãã»ã¼ã¸ãåä¿¡ãã¦ããã°ãSLEEP ç¶æ
|
---|
2617 | ã«é·ç§»ããã*/
|
---|
2618 | syscall(wai_sem(SEM_DHCP6_CLI_LOCK));
|
---|
2619 | if (ct->prf_lst != NULL) {
|
---|
2620 |
|
---|
2621 | /* åéä¿¡ã¿ã¤ãã¼ãåæ¢ããã*/
|
---|
2622 | syscall(wai_sem(SEM_DHCP6_CLI_TIMER));
|
---|
2623 | ct->timers[DHCP6C_TIMER_RCV_REPLY] = 0;
|
---|
2624 | syscall(sig_sem(SEM_DHCP6_CLI_TIMER));
|
---|
2625 |
|
---|
2626 | /* æå¹ãªãªã¼ã¹ã»ã¡ãã»ã¼ã¸æ§é ä½ã解æ¾ããã*/
|
---|
2627 | if (ct->act_msg != NULL) {
|
---|
2628 | syscall(rel_mpf(MPF_DHCP6_CLI_MSG, (void*)ct->act_msg));
|
---|
2629 | ct->act_msg = NULL;
|
---|
2630 | }
|
---|
2631 |
|
---|
2632 | /* SLEEP ç¶æ
|
---|
2633 | ã«é·ç§»ããã*/
|
---|
2634 | ct->fsm = DHCP6_FSM_SLEEP;
|
---|
2635 | syscall(sig_sem(SEM_DHCP6_CLI_LOCK));
|
---|
2636 | return;
|
---|
2637 | }
|
---|
2638 | syscall(sig_sem(SEM_DHCP6_CLI_LOCK));
|
---|
2639 |
|
---|
2640 | /* åéä¿¡åæ°ã確èªããã*/
|
---|
2641 | if ((ct->MRC != 0) && (ct->txcount > ct->MRC)) {
|
---|
2642 | ct->error = E_TMOUT;
|
---|
2643 | return;
|
---|
2644 | }
|
---|
2645 |
|
---|
2646 | /* RELEASE ã¡ãã»ã¼ã¸ãä½æããã*/
|
---|
2647 | if ((error = setup_release_msg(ct, ct->act_msg, DHCP6_RELEASE)) != E_OK) {
|
---|
2648 | syslog(LOG_NOTICE, "[DHCP6C] error, setup release message: %s.", itron_strerror(error));
|
---|
2649 | ct->error = error;
|
---|
2650 | return;
|
---|
2651 | }
|
---|
2652 |
|
---|
2653 | /* RELEASE ã¡ãã»ã¼ã¸ãéä¿¡ããã*/
|
---|
2654 | error = UDP_SND_DAT(ct->cepid, &ct->dst, &ct->snd_msg->msg, ct->snd_msg->len, TMO_NBLK);
|
---|
2655 | if (error != E_WBLK) {
|
---|
2656 | syslog(LOG_NOTICE, "[DHCP6C] error, send release message: %s.", itron_strerror(error));
|
---|
2657 | ct->error = error;
|
---|
2658 | return;
|
---|
2659 | }
|
---|
2660 |
|
---|
2661 | /* åéä¿¡ã¿ã¤ã ã¢ã¦ããè¨å®ããã*/
|
---|
2662 | syscall(wai_sem(SEM_DHCP6_CLI_TIMER));
|
---|
2663 | ct->timers[DHCP6C_TIMER_SND_REL] = SYSTIM2TIMER(ct->RT);
|
---|
2664 | syscall(sig_sem(SEM_DHCP6_CLI_TIMER));
|
---|
2665 |
|
---|
2666 | /* åéä¿¡ã¿ã¤ã ã¢ã¦ããæ´æ°ããã*/
|
---|
2667 | advance_retrans(ct);
|
---|
2668 | }
|
---|
2669 |
|
---|
2670 | /*
|
---|
2671 | * advertise_msg_timeout -- ADVERTISE ã¡ãã»ã¼ã¸ã®ã¿ã¤ã ã¢ã¦ãå¦ç
|
---|
2672 | */
|
---|
2673 |
|
---|
2674 | static void
|
---|
2675 | advertise_msg_timeout (T_DHCP6_CLI_CONTEXT *ct)
|
---|
2676 | {
|
---|
2677 | /* SOLICIT ã¡ãã»ã¼ã¸éä¿¡ã¿ã¤ãã¼ãåæ¢ããã*/
|
---|
2678 | ct->flags &= ~DHCP6C_FLAG_TMOUT_MASK;
|
---|
2679 | syscall(wai_sem(SEM_DHCP6_CLI_TIMER));
|
---|
2680 | ct->timers[DHCP6C_TIMER_SND_SOL] = 0;
|
---|
2681 | syscall(sig_sem(SEM_DHCP6_CLI_TIMER));
|
---|
2682 |
|
---|
2683 | if (select_adv(ct)) {
|
---|
2684 | /*
|
---|
2685 | * ADVERTISE ã¡ãã»ã¼ã¸ã®é¸æãçµäºãã¦ããã°ã
|
---|
2686 | * REQUEST ã¡ãã»ã¼ã¸ãéä¿¡ã㦠SELECT ç¶æ
|
---|
2687 | ã«é·ç§»ããã
|
---|
2688 | */
|
---|
2689 | start_select(ct);
|
---|
2690 | }
|
---|
2691 | else
|
---|
2692 | ct->error = E_TMOUT;
|
---|
2693 | }
|
---|
2694 |
|
---|
2695 | /*
|
---|
2696 | * renew_timeout -- RENEW ã¿ã¤ã ã¢ã¦ãå¦ç
|
---|
2697 | */
|
---|
2698 |
|
---|
2699 | static void
|
---|
2700 | renew_timeout (T_DHCP6_CLI_CONTEXT *ct)
|
---|
2701 | {
|
---|
2702 | /* RENEW ç¶æ
|
---|
2703 | ã«é·ç§»ããã*/
|
---|
2704 | ct->flags &= ~DHCP6C_FLAG_TMOUT_MASK;
|
---|
2705 | start_renew(ct);
|
---|
2706 | }
|
---|
2707 |
|
---|
2708 | /*
|
---|
2709 | * rebind_timeout -- REBIND ã¿ã¤ã ã¢ã¦ãå¦ç
|
---|
2710 | */
|
---|
2711 |
|
---|
2712 | static void
|
---|
2713 | rebind_timeout (T_DHCP6_CLI_CONTEXT *ct)
|
---|
2714 | {
|
---|
2715 | /* REBIND ç¶æ
|
---|
2716 | ã«é·ç§»ããã*/
|
---|
2717 | ct->flags &= ~DHCP6C_FLAG_TMOUT_MASK;
|
---|
2718 | start_rebind(ct);
|
---|
2719 | }
|
---|
2720 |
|
---|
2721 | /*
|
---|
2722 | * depref_timeout -- DEPREF ã¿ã¤ã ã¢ã¦ãå¦ç
|
---|
2723 | */
|
---|
2724 |
|
---|
2725 | static void
|
---|
2726 | depref_timeout (T_DHCP6_CLI_CONTEXT *ct)
|
---|
2727 | {
|
---|
2728 | T_DHCP6_OPTION *opt;
|
---|
2729 | T_DHCP6_OPT_IA_NA_PD *ia;
|
---|
2730 | T_DHCP6_OPT_IAADDR *iaa;
|
---|
2731 | SYSTIM time;
|
---|
2732 | uint8_t *msg, *last;
|
---|
2733 | uint_t aoff, asize;
|
---|
2734 |
|
---|
2735 | /* æå¹ãªãªã¼ã¹ãç¡ããã°å¦ççµäº */
|
---|
2736 | ct->flags &= ~DHCP6C_FLAG_TMOUT_MASK;
|
---|
2737 | if (ct->act_msg == NULL) {
|
---|
2738 | return;
|
---|
2739 | }
|
---|
2740 |
|
---|
2741 | get_tim(&time);
|
---|
2742 | msg = ct->act_msg->msg.options;
|
---|
2743 | last = msg + (ct->act_msg->len - sizeof(T_DHCP6_MSG_HDR));
|
---|
2744 | while (msg < last) {
|
---|
2745 |
|
---|
2746 | /* IA_NA/IA_PD ãªãã·ã§ã³ã§ããã°ãæ¨å¥¨æå¹æéã確èªããã*/
|
---|
2747 | opt = (T_DHCP6_OPTION*)msg;
|
---|
2748 | if (MSG2HOST16(opt->code) == DHCP6_OPT_IA_NA || MSG2HOST16(opt->code) == DHCP6_OPT_IA_PD) {
|
---|
2749 |
|
---|
2750 | ia = (T_DHCP6_OPT_IA_NA_PD*)opt;
|
---|
2751 | asize = MSG2HOST16(ia->len) + sizeof(*opt);
|
---|
2752 | for (aoff = sizeof(*ia); aoff < asize;
|
---|
2753 | aoff += (MSG2HOST16(iaa->len) & ~DHCP6C_IAA_FLAG_MASK) + sizeof(*iaa)) {
|
---|
2754 |
|
---|
2755 | /* ãã§ã«æ¨å¥¨æå¹æéãçµéãã¦ããã°å¦çããªãã*/
|
---|
2756 | iaa = (T_DHCP6_OPT_IAADDR*)((uint8_t*)opt + aoff);
|
---|
2757 | if ((MSG2HOST16(iaa->len) & DHCP6C_IAA_FLAG_DEPREFERD))
|
---|
2758 | continue;
|
---|
2759 |
|
---|
2760 | /* æ¨å¥¨æå¹æéçµéãã¦ããã° FLAG ãè¨å®ããã*/
|
---|
2761 | if (TIMEC_GE(time, ct->act_msg->rcv_time + MSG2HOST32(iaa->prefer))) {
|
---|
2762 | HOST2MSG16(iaa->len, MSG2HOST16(iaa->len) | DHCP6C_IAA_FLAG_DEPREFERD);
|
---|
2763 | if (MSG2HOST16(ia->code) == DHCP6_OPT_IA_NA)
|
---|
2764 | syslog(LOG_NOTICE, "[DHCP6C] address depreferd: %s.", ipv62str(NULL, &iaa->addr));
|
---|
2765 | else
|
---|
2766 | syslog(LOG_NOTICE, "[DHCP6C] prefix depreferd: %s.", ipv62str(NULL, &iaa->addr));
|
---|
2767 |
|
---|
2768 | /*ãDNS ã®å¦çãå¿
|
---|
2769 | è¦ã*/
|
---|
2770 | }
|
---|
2771 | }
|
---|
2772 | }
|
---|
2773 | msg += MSG2HOST16(opt->len) + sizeof(*opt);
|
---|
2774 | }
|
---|
2775 |
|
---|
2776 | eval_expire(ct);
|
---|
2777 | }
|
---|
2778 |
|
---|
2779 | /*
|
---|
2780 | * expire_timeout -- EXPIRE ã¿ã¤ã ã¢ã¦ãå¦ç
|
---|
2781 | */
|
---|
2782 |
|
---|
2783 | static void
|
---|
2784 | expire_timeout (T_DHCP6_CLI_CONTEXT *ct)
|
---|
2785 | {
|
---|
2786 | T_DHCP6_OPTION *opt;
|
---|
2787 | T_DHCP6_OPT_IA_NA_PD *ia;
|
---|
2788 | T_DHCP6_OPT_IAADDR *iaa;
|
---|
2789 | SYSTIM time;
|
---|
2790 | uint8_t *msg, *last;
|
---|
2791 | uint_t aoff, asize, addrs = 0;
|
---|
2792 |
|
---|
2793 | /* æå¹ãªãªã¼ã¹ãç¡ããã°å¦ççµäº */
|
---|
2794 | ct->flags &= ~DHCP6C_FLAG_TMOUT_MASK;
|
---|
2795 | if (ct->act_msg == NULL) {
|
---|
2796 | return;
|
---|
2797 | }
|
---|
2798 |
|
---|
2799 | get_tim(&time);
|
---|
2800 | msg = ct->act_msg->msg.options;
|
---|
2801 | last = msg + (ct->act_msg->len - sizeof(T_DHCP6_MSG_HDR));
|
---|
2802 | while (msg < last) {
|
---|
2803 |
|
---|
2804 | /* IA_NA/IA_PD ãªãã·ã§ã³ã§ããã°ãæå¹æéã確èªããã*/
|
---|
2805 | opt = (T_DHCP6_OPTION*)msg;
|
---|
2806 | if (MSG2HOST16(opt->code) == DHCP6_OPT_IA_NA || MSG2HOST16(opt->code) == DHCP6_OPT_IA_PD) {
|
---|
2807 |
|
---|
2808 | ia = (T_DHCP6_OPT_IA_NA_PD*)opt;
|
---|
2809 | asize = MSG2HOST16(ia->len) + sizeof(*opt);
|
---|
2810 | for (aoff = sizeof(*ia); aoff < asize;
|
---|
2811 | aoff += (MSG2HOST16(iaa->len) & ~DHCP6C_IAA_FLAG_MASK) + sizeof(*iaa)) {
|
---|
2812 |
|
---|
2813 | /* ãã§ã«æå¹æéãçµéãã¦ããã°å¦çããªãã*/
|
---|
2814 | iaa = (T_DHCP6_OPT_IAADDR*)((uint8_t*)opt + aoff);
|
---|
2815 | if ((MSG2HOST16(iaa->len) & DHCP6C_IAA_FLAG_EXPIRED))
|
---|
2816 | continue;
|
---|
2817 |
|
---|
2818 | /* æå¹æéçµéãã¦ããã° FLAG ãè¨å®ããã*/
|
---|
2819 | if (TIMEC_GE(time, ct->act_msg->rcv_time + MSG2HOST32(iaa->valid))) {
|
---|
2820 | HOST2MSG16(iaa->len, MSG2HOST16(iaa->len) | DHCP6C_IAA_FLAG_EXPIRED);
|
---|
2821 | if (MSG2HOST16(ia->code) == DHCP6_OPT_IA_NA)
|
---|
2822 | syslog(LOG_NOTICE, "[DHCP6C] address expired: %s.", ipv62str(NULL, &iaa->addr));
|
---|
2823 | else
|
---|
2824 | syslog(LOG_NOTICE, "[DHCP6C] prefix expired: %s.", ipv62str(NULL, &iaa->addr));
|
---|
2825 |
|
---|
2826 | /*ãDNS ã®å¦çãå¿
|
---|
2827 | è¦ã*/
|
---|
2828 | continue;
|
---|
2829 | }
|
---|
2830 | addrs ++;
|
---|
2831 | }
|
---|
2832 | }
|
---|
2833 | msg += MSG2HOST16(opt->len) + sizeof(*opt);
|
---|
2834 | }
|
---|
2835 |
|
---|
2836 | /* æå¹ãªã¢ãã¬ã¹ãå
|
---|
2837 | ¨ã¦ç¡ããªã£ãæ㯠INIT ç¶æ
|
---|
2838 | ã«é·ç§»ããã*/
|
---|
2839 | if (addrs == 0) {
|
---|
2840 |
|
---|
2841 | /* ACTIVE ãªã¼ã¹ãåä¿¡ã¡ãã»ã¼ã¸æ§é ä½ãªã¹ãã«æ»ãã*/
|
---|
2842 | syslog(LOG_NOTICE, "[DHCP6C] all address expired.");
|
---|
2843 | syscall(wai_sem(SEM_DHCP6_CLI_LOCK));
|
---|
2844 | ct->act_msg->next = ct->rcv_lst;
|
---|
2845 | ct->rcv_lst = ct->act_msg;
|
---|
2846 | ct->act_msg = NULL;
|
---|
2847 | syscall(sig_sem(SEM_DHCP6_CLI_LOCK));
|
---|
2848 |
|
---|
2849 | /* å
|
---|
2850 | ¨ã¦ã® TIMER ããã£ã³ã»ã«ããã*/
|
---|
2851 | cancel_all_timers(ct);
|
---|
2852 |
|
---|
2853 | /* INIT ç¶æ
|
---|
2854 | ã«é·ç§»ããã*/
|
---|
2855 | start_init(ct);
|
---|
2856 | return;
|
---|
2857 | }
|
---|
2858 |
|
---|
2859 | eval_expire(ct);
|
---|
2860 | }
|
---|
2861 |
|
---|
2862 | #endif /* of #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATEFULL || DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_RA */
|
---|
2863 |
|
---|
2864 | /*
|
---|
2865 | * reply_msg_timeout -- REPLY ã¡ãã»ã¼ã¸ã®ã¿ã¤ã ã¢ã¦ãå¦ç
|
---|
2866 | */
|
---|
2867 |
|
---|
2868 | static void
|
---|
2869 | reply_msg_timeout (T_DHCP6_CLI_CONTEXT *ct)
|
---|
2870 | {
|
---|
2871 | /* SOLICIT ã¡ãã»ã¼ã¸éä¿¡ã¿ã¤ãã¼ãåæ¢ããã*/
|
---|
2872 | ct->flags &= ~DHCP6C_FLAG_TMOUT_MASK;
|
---|
2873 | syscall(wai_sem(SEM_DHCP6_CLI_TIMER));
|
---|
2874 | ct->timers[DHCP6C_TIMER_SND_REQ] = 0;
|
---|
2875 | ct->timers[DHCP6C_TIMER_SND_REF] = 0;
|
---|
2876 | syscall(sig_sem(SEM_DHCP6_CLI_TIMER));
|
---|
2877 |
|
---|
2878 | #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATELESS || DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_RA
|
---|
2879 |
|
---|
2880 | /* STATELES ã¢ã¼ãã§ã¯SLEEP ã«é·ç§»ããã*/
|
---|
2881 | ct->error = E_TMOUT;
|
---|
2882 | ct->fsm = DHCP6_FSM_SLEEP;
|
---|
2883 |
|
---|
2884 | #endif /* of #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATELESS || DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_RA */
|
---|
2885 |
|
---|
2886 | #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATEFULL || DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_RA
|
---|
2887 |
|
---|
2888 | /* RENEW ã¡ãã»ã¼ã¸ã®é¸æãçµäºãã¦ããã°ãBOUND ç¶æ
|
---|
2889 | ã«é·ç§»ããã*/
|
---|
2890 | if (select_reply(ct)) {
|
---|
2891 |
|
---|
2892 | /* ãªã¼ã¹æ
|
---|
2893 | å ±ã解æ¾ããã*/
|
---|
2894 | rel_lease(ct);
|
---|
2895 |
|
---|
2896 | /* BOUND ç¶æ
|
---|
2897 | ã«é·ç§»ããã*/
|
---|
2898 | start_bound(ct);
|
---|
2899 | }
|
---|
2900 | else if (ct->fsm == DHCP6_FSM_RENEW || ct->fsm == DHCP6_FSM_REBIND)
|
---|
2901 | eval_expire(ct);
|
---|
2902 | else {
|
---|
2903 | /* SLEEP ã«é·ç§»ããã*/
|
---|
2904 | ct->error = E_TMOUT;
|
---|
2905 | ct->fsm = DHCP6_FSM_SLEEP;
|
---|
2906 | }
|
---|
2907 |
|
---|
2908 | #endif /* of #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATEFULL || DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_RA */
|
---|
2909 | }
|
---|
2910 |
|
---|
2911 | /*
|
---|
2912 | * dispatch_timeout -- ã¿ã¤ã ã¢ã¦ãããæã®å¦ç
|
---|
2913 | */
|
---|
2914 |
|
---|
2915 | static ER
|
---|
2916 | dispatch_timeout (T_DHCP6_CLI_CONTEXT *ct)
|
---|
2917 | {
|
---|
2918 |
|
---|
2919 | switch (ct->flags & DHCP6C_FLAG_TMOUT_TIMER_MASK) {
|
---|
2920 |
|
---|
2921 | #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATELESS || DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_RA
|
---|
2922 |
|
---|
2923 | case DHCP6C_TIMER_SND_IREQ:
|
---|
2924 | send_info_req_msg(ct);
|
---|
2925 | break;
|
---|
2926 |
|
---|
2927 | #endif /* of #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATELESS || DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_RA */
|
---|
2928 |
|
---|
2929 | #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATEFULL || DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_RA
|
---|
2930 |
|
---|
2931 | case DHCP6C_TIMER_SND_SOL:
|
---|
2932 | send_solicit_msg(ct);
|
---|
2933 | break;
|
---|
2934 |
|
---|
2935 | case DHCP6C_TIMER_SND_REQ:
|
---|
2936 | send_request_msg(ct);
|
---|
2937 | break;
|
---|
2938 |
|
---|
2939 | case DHCP6C_TIMER_SND_REF:
|
---|
2940 | send_refresh_msg(ct);
|
---|
2941 | break;
|
---|
2942 |
|
---|
2943 | case DHCP6C_TIMER_SND_REL:
|
---|
2944 | send_release_msg(ct);
|
---|
2945 | break;
|
---|
2946 |
|
---|
2947 | case DHCP6C_TIMER_RCV_ADV:
|
---|
2948 | advertise_msg_timeout(ct);
|
---|
2949 | break;
|
---|
2950 |
|
---|
2951 | case DHCP6C_TIMER_RENEW:
|
---|
2952 | renew_timeout(ct);
|
---|
2953 | break;
|
---|
2954 |
|
---|
2955 | case DHCP6C_TIMER_REBIND:
|
---|
2956 | rebind_timeout(ct);
|
---|
2957 | break;
|
---|
2958 |
|
---|
2959 | case DHCP6C_TIMER_DEPREF:
|
---|
2960 | depref_timeout(ct);
|
---|
2961 | break;
|
---|
2962 |
|
---|
2963 | case DHCP6C_TIMER_EXPIRE:
|
---|
2964 | expire_timeout(ct);
|
---|
2965 | break;
|
---|
2966 |
|
---|
2967 | #endif /* of #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATEFULL || DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_RA */
|
---|
2968 |
|
---|
2969 | case DHCP6C_TIMER_RCV_REPLY:
|
---|
2970 | reply_msg_timeout(ct);
|
---|
2971 | break;
|
---|
2972 |
|
---|
2973 | default:
|
---|
2974 | syslog(LOG_NOTICE, "[DHCP6C] error, unknown timeout: %d.", ct->flags & DHCP6C_FLAG_TMOUT_TIMER_MASK);
|
---|
2975 | break;
|
---|
2976 | }
|
---|
2977 |
|
---|
2978 | return ct->error;
|
---|
2979 | }
|
---|
2980 |
|
---|
2981 | /*
|
---|
2982 | * dispatch_event -- ã¤ãã³ãæ¯ã®å¦ç
|
---|
2983 | */
|
---|
2984 |
|
---|
2985 | static ER
|
---|
2986 | dispatch_event (T_DHCP6_CLI_CONTEXT *ct)
|
---|
2987 | {
|
---|
2988 | ER error = E_OK;
|
---|
2989 |
|
---|
2990 | while (ct->fsm != DHCP6_FSM_SLEEP && error == E_OK) {
|
---|
2991 |
|
---|
2992 | /* ã¡ãã»ã¼ã¸ã®éåä¿¡ã¨ã¿ã¤ã ã¢ã¦ããå¾
|
---|
2993 | ã¤ã*/
|
---|
2994 | syscall(wai_sem(SEM_DHCP6_CLI_READY));
|
---|
2995 |
|
---|
2996 | if (ct->flags & DHCP6C_FLAG_RCV_MSG) {
|
---|
2997 | while (ct->val_lst != NULL) {
|
---|
2998 | error = eval_rcv_msg(ct);
|
---|
2999 | }
|
---|
3000 | ct->flags &= ~DHCP6C_FLAG_RCV_MSG;
|
---|
3001 | }
|
---|
3002 |
|
---|
3003 | if (ct->flags & DHCP6C_FLAG_TMOUT_MASK)
|
---|
3004 | error = dispatch_timeout(ct);
|
---|
3005 |
|
---|
3006 | if (ct->error != E_OK)
|
---|
3007 | error = ct->error;
|
---|
3008 | }
|
---|
3009 |
|
---|
3010 | return error;
|
---|
3011 | }
|
---|
3012 |
|
---|
3013 | /*
|
---|
3014 | * init_context -- DHCPv6 ã¯ã©ã¤ã¢ã³ãã³ã³ããã¹ãæ§é ä½ãåæåããã
|
---|
3015 | */
|
---|
3016 |
|
---|
3017 | static void
|
---|
3018 | init_context (T_DHCP6_CLI_CONTEXT *ct, ID cepid)
|
---|
3019 | {
|
---|
3020 | memset(ct, 0, sizeof(*ct));
|
---|
3021 | ct->cepid = cepid;
|
---|
3022 | ct->sc = IF_ETHER_NIC_GET_SOFTC();
|
---|
3023 | ct->dst.portno = DHCP6_SRV_CFG_PORTNO;
|
---|
3024 | }
|
---|
3025 |
|
---|
3026 | /*
|
---|
3027 | * rel_cli_msg -- ã¡ãã»ã¼ã¸æ§é ä½ã解æ¾ããã
|
---|
3028 | */
|
---|
3029 |
|
---|
3030 | static void
|
---|
3031 | rel_cli_msg (T_DHCP6_CLI_CONTEXT *ct)
|
---|
3032 | {
|
---|
3033 | T_DHCP6_CLI_MSG *ptr, *cell;
|
---|
3034 |
|
---|
3035 | syscall(wai_sem(SEM_DHCP6_CLI_LOCK));
|
---|
3036 | for (ptr = ct->rcv_lst; ptr != NULL; ) {
|
---|
3037 | cell = ptr;
|
---|
3038 | ptr = ptr->next;
|
---|
3039 | syscall(rel_mpf(MPF_DHCP6_CLI_MSG, (void*)cell));
|
---|
3040 | }
|
---|
3041 |
|
---|
3042 | for (ptr = ct->val_lst; ptr != NULL; ) {
|
---|
3043 | cell = ptr;
|
---|
3044 | ptr = ptr->next;
|
---|
3045 | syscall(rel_mpf(MPF_DHCP6_CLI_MSG, (void*)cell));
|
---|
3046 | }
|
---|
3047 |
|
---|
3048 | for (ptr = ct->prf_lst; ptr != NULL; ) {
|
---|
3049 | cell = ptr;
|
---|
3050 | ptr = ptr->next;
|
---|
3051 | syscall(rel_mpf(MPF_DHCP6_CLI_MSG, (void*)cell));
|
---|
3052 | }
|
---|
3053 |
|
---|
3054 | if (ct->snd_msg != NULL)
|
---|
3055 | syscall(rel_mpf(MPF_DHCP6_CLI_MSG, (void*)ct->snd_msg));
|
---|
3056 | if (ct->adv_msg != NULL)
|
---|
3057 | syscall(rel_mpf(MPF_DHCP6_CLI_MSG, (void*)ct->adv_msg));
|
---|
3058 | ct->rcv_lst = ct->prf_lst = ct->val_lst = ct->snd_msg = ct->adv_msg = NULL;
|
---|
3059 |
|
---|
3060 | #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATELESS
|
---|
3061 |
|
---|
3062 | /* ã¹ãã¼ãã¬ã¹ã®æã¯æå¹ãªãªã¼ã¹ã»ã¡ãã»ã¼ã¸æ§é ä½ã解æ¾ããã*/
|
---|
3063 | if (ct->act_msg != NULL) {
|
---|
3064 | syscall(rel_mpf(MPF_DHCP6_CLI_MSG, (void*)ct->act_msg));
|
---|
3065 | ct->act_msg = NULL;
|
---|
3066 | }
|
---|
3067 |
|
---|
3068 | #endif /* of #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATELESS */
|
---|
3069 |
|
---|
3070 | syscall(sig_sem(SEM_DHCP6_CLI_LOCK));
|
---|
3071 | }
|
---|
3072 |
|
---|
3073 | /*
|
---|
3074 | * init_cli_msg -- åã¡ãã»ã¼ã¸æ§é ä½ãåæåããã
|
---|
3075 | */
|
---|
3076 |
|
---|
3077 | static ER
|
---|
3078 | init_cli_msg (T_DHCP6_CLI_CONTEXT *ct)
|
---|
3079 | {
|
---|
3080 | T_DHCP6_CLI_MSG *cell;
|
---|
3081 | ER error;
|
---|
3082 | int count;
|
---|
3083 |
|
---|
3084 | /* éä¿¡ã¡ãã»ã¼ã¸æ§é ä½ãç²å¾ããã*/
|
---|
3085 | if ((error = tget_mpf(MPF_DHCP6_CLI_MSG, (void*)&ct->snd_msg, TMO_DHCP6C_MPF_GET)) != E_OK) {
|
---|
3086 | syslog(LOG_NOTICE, "[DHCP6C] error, tget_mpf() for send: %s.", itron_strerror(error));
|
---|
3087 | return error;
|
---|
3088 | }
|
---|
3089 |
|
---|
3090 | /*
|
---|
3091 | * æå¹ãªãªã¼ã¹ã»ã¡ãã»ã¼ã¸æ§é ä½ãããå ´åã¯ã
|
---|
3092 | * ç²å¾ããåä¿¡ã¡ãã»ã¼ã¸æ§é ä½ãªã¹ãã®æ§é ä½ã 1æ¸ããã
|
---|
3093 | */
|
---|
3094 | if (ct->act_msg == NULL)
|
---|
3095 | count = NUM_DHCP6_CLI_MSG_LIST;
|
---|
3096 | else
|
---|
3097 | count = NUM_DHCP6_CLI_MSG_LIST - 1;
|
---|
3098 |
|
---|
3099 | /* åä¿¡ã¡ãã»ã¼ã¸æ§é ä½ãç²å¾ããã*/
|
---|
3100 | syscall(wai_sem(SEM_DHCP6_CLI_LOCK));
|
---|
3101 | while (count --> 0) {
|
---|
3102 | if ((error = tget_mpf(MPF_DHCP6_CLI_MSG, (void*)&cell, TMO_DHCP6C_MPF_GET)) != E_OK) {
|
---|
3103 | syslog(LOG_NOTICE, "[DHCP6C] error, tget_mpf() for receive: %s.", itron_strerror(error));
|
---|
3104 | break;
|
---|
3105 | }
|
---|
3106 | cell->next = ct->rcv_lst;
|
---|
3107 | ct->rcv_lst = cell;
|
---|
3108 | }
|
---|
3109 | syscall(sig_sem(SEM_DHCP6_CLI_LOCK));
|
---|
3110 |
|
---|
3111 | return E_OK;
|
---|
3112 | }
|
---|
3113 |
|
---|
3114 | /*
|
---|
3115 | * dhcp6c_renew_info -- ãããã¯ã¼ã¯æ
|
---|
3116 | å ±ãååå¾ããã
|
---|
3117 | */
|
---|
3118 |
|
---|
3119 | ER
|
---|
3120 | dhcp6c_renew_info (void)
|
---|
3121 | {
|
---|
3122 |
|
---|
3123 | #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATELESS
|
---|
3124 |
|
---|
3125 | if (context.fsm == DHCP6_FSM_INFORMED) {
|
---|
3126 |
|
---|
3127 | /* REL_INFO ç¶æ
|
---|
3128 | ã«é·ç§»ããå¾ã« SLEEP ã解é¤ããããã«è¨å®ããã*/
|
---|
3129 | context.flags |= DHCP6C_FLAG_RENEW;
|
---|
3130 | start_rel_info(&context);
|
---|
3131 | return E_OK;
|
---|
3132 | }
|
---|
3133 | else if (context.fsm == DHCP6_FSM_SLEEP) {
|
---|
3134 |
|
---|
3135 | /* SLEEP ã解é¤ããã*/
|
---|
3136 | wup_tsk(DHCP6_CLI_TASK);
|
---|
3137 | return E_OK;
|
---|
3138 | }
|
---|
3139 | else
|
---|
3140 | return E_OBJ;
|
---|
3141 |
|
---|
3142 | #elif DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATEFULL
|
---|
3143 |
|
---|
3144 | if (context.fsm == DHCP6_FSM_BOUND) {
|
---|
3145 |
|
---|
3146 | /* RENEW ç¶æ
|
---|
3147 | ã«é·ç§»ããã*/
|
---|
3148 | start_renew(&context);
|
---|
3149 | return E_OK;
|
---|
3150 | }
|
---|
3151 | else if (context.fsm == DHCP6_FSM_SLEEP) {
|
---|
3152 |
|
---|
3153 | /* SLEEP ã解é¤ããã*/
|
---|
3154 | wup_tsk(DHCP6_CLI_TASK);
|
---|
3155 | return E_OK;
|
---|
3156 | }
|
---|
3157 | else
|
---|
3158 | return E_OBJ;
|
---|
3159 |
|
---|
3160 | #else /* of #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATELESS */
|
---|
3161 |
|
---|
3162 | #endif /* of #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATELESS */
|
---|
3163 |
|
---|
3164 | }
|
---|
3165 |
|
---|
3166 | /*
|
---|
3167 | * dhcp6c_rel_info -- DHCP ã§è¨å®ããããããã¯ã¼ã¯æ
|
---|
3168 | å ±ã解æ¾ããã
|
---|
3169 | */
|
---|
3170 |
|
---|
3171 | ER
|
---|
3172 | dhcp6c_rel_info (void)
|
---|
3173 | {
|
---|
3174 | /* REL_INFO ç¶æ
|
---|
3175 | ã«é·ç§»ããã*/
|
---|
3176 | start_rel_info(&context);
|
---|
3177 | return E_OK;
|
---|
3178 | }
|
---|
3179 |
|
---|
3180 | /*
|
---|
3181 | * dhcp6c_get_info -- DHCP ã§è¨å®ããããããã¯ã¼ã¯æ
|
---|
3182 | å ±ãè¿ãã
|
---|
3183 | */
|
---|
3184 |
|
---|
3185 | ER
|
---|
3186 | dhcp6c_get_info (T_IN6_ADDR *addr, uint32_t *expire, uint32_t *renew,
|
---|
3187 | uint32_t *rebind, uint32_t *deprefer, SYSTIM *bind_start)
|
---|
3188 | {
|
---|
3189 | if (addr == NULL || expire == NULL || renew == NULL ||
|
---|
3190 | rebind == NULL || deprefer == NULL || bind_start == NULL)
|
---|
3191 | return E_PAR;
|
---|
3192 | else if (context.act_msg == NULL)
|
---|
3193 | return E_OBJ;
|
---|
3194 | else {
|
---|
3195 | // context.timers[DHCP6C_TIMER_EXPIRE],
|
---|
3196 | // context.timers[DHCP6C_TIMER_RENEW],
|
---|
3197 | // context.timers[DHCP6C_TIMER_REBIND],
|
---|
3198 | // context.timers[DHCP6C_TIMER_DEPREF]);
|
---|
3199 |
|
---|
3200 | *addr = context.act_msg->srv.ipaddr;
|
---|
3201 | *expire = context.timers[DHCP6C_TIMER_EXPIRE];
|
---|
3202 | *renew = context.timers[DHCP6C_TIMER_RENEW];
|
---|
3203 | *rebind = context.timers[DHCP6C_TIMER_REBIND];
|
---|
3204 | *deprefer = context.timers[DHCP6C_TIMER_DEPREF];
|
---|
3205 | *bind_start = context.act_msg->rcv_time;
|
---|
3206 | return E_OK;
|
---|
3207 | }
|
---|
3208 | }
|
---|
3209 |
|
---|
3210 | /*
|
---|
3211 | * ã³ã¼ã«ããã¯é¢æ°
|
---|
3212 | */
|
---|
3213 |
|
---|
3214 | ER
|
---|
3215 | callback_nblk_dhcp6_cli (ID cepid, FN fncd, void *p_parblk)
|
---|
3216 | {
|
---|
3217 | T_DHCP6_CLI_MSG *msg;
|
---|
3218 | ER_UINT len;
|
---|
3219 |
|
---|
3220 | len = *(ER_UINT*)p_parblk;
|
---|
3221 | if (len < 0 && len != E_RLWAI) {
|
---|
3222 | /* E_RLWAI 以å¤ã§ã0 以ä¸ã®å ´åã¯ãã¨ã©ã¼ã³ã¼ã */
|
---|
3223 | syslog(LOG_NOTICE, "[DHCP6C(CBR)] error: %s, fncd: %s.", itron_strerror(len), in_strtfn(fncd));
|
---|
3224 | }
|
---|
3225 | else {
|
---|
3226 | if (fncd == TEV_UDP_RCV_DAT) {
|
---|
3227 |
|
---|
3228 | /* åä¿¡ã¡ãã»ã¼ã¸ãªã¹ãã空ã®æã¯ãåä¿¡ããªãã§ãã¼ã¿ã°ã©ã ãæ¨ã¦ãã*/
|
---|
3229 | if (context.rcv_lst == NULL)
|
---|
3230 | syslog(LOG_NOTICE, "[DHCP6C(CBR)] receive buffer all busy.");
|
---|
3231 | else {
|
---|
3232 | /* ã¡ãã»ã¼ã¸ãåä¿¡ããã¡ãã»ã¼ã¸æ§é ä½ãæºåããã*/
|
---|
3233 | syscall(wai_sem(SEM_DHCP6_CLI_LOCK));
|
---|
3234 | msg = context.rcv_lst;
|
---|
3235 | context.rcv_lst = context.rcv_lst->next;
|
---|
3236 | syscall(sig_sem(SEM_DHCP6_CLI_LOCK));
|
---|
3237 |
|
---|
3238 | /* ã¡ãã»ã¼ã¸ãåä¿¡ããã*/
|
---|
3239 | len = UDP_RCV_DAT(context.cepid, &msg->srv, &msg->msg, sizeof(msg->msg), TMO_POL);
|
---|
3240 |
|
---|
3241 | syscall(wai_sem(SEM_DHCP6_CLI_LOCK));
|
---|
3242 | msg->len = len;
|
---|
3243 | if (len >= 0) {
|
---|
3244 | /* åä¿¡ããã¡ãã»ã¼ã¸ãæ¤è¨¼ã¡ãã»ã¼ã¸ãªã¹ãã«ç§»ãã*/
|
---|
3245 | msg->next = context.val_lst;
|
---|
3246 | context.val_lst = msg;
|
---|
3247 | context.flags |= DHCP6C_FLAG_RCV_MSG;
|
---|
3248 | }
|
---|
3249 | else {
|
---|
3250 | /* ã¡ãã»ã¼ã¸æ§é ä½ãåä¿¡ã¡ãã»ã¼ã¸ãªã¹ãã«æ»ãã*/
|
---|
3251 | context.error = len;
|
---|
3252 | msg->next = context.rcv_lst;
|
---|
3253 | context.rcv_lst = msg;
|
---|
3254 | }
|
---|
3255 | syscall(sig_sem(SEM_DHCP6_CLI_LOCK));
|
---|
3256 | }
|
---|
3257 | }
|
---|
3258 | syscall(sig_sem(SEM_DHCP6_CLI_READY));
|
---|
3259 | }
|
---|
3260 | return E_OK;
|
---|
3261 | }
|
---|
3262 | /*
|
---|
3263 | * dhcp6_cli_task -- DHCPv6 ã¯ã©ã¤ã¢ã³ãã¿ã¹ã¯
|
---|
3264 | */
|
---|
3265 |
|
---|
3266 | void
|
---|
3267 | dhcp6_cli_task (intptr_t exinf)
|
---|
3268 | {
|
---|
3269 | T_DHCP6_CLI_CONTEXT *ct;
|
---|
3270 | ID tskid;
|
---|
3271 | ER error;
|
---|
3272 |
|
---|
3273 | dly_tsk(1000);
|
---|
3274 | get_tid(&tskid);
|
---|
3275 |
|
---|
3276 | #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATELESS
|
---|
3277 | syslog(LOG_NOTICE, "[DHCP6C:%d] started in stateless.", tskid);
|
---|
3278 | #elif DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATEFULL
|
---|
3279 | syslog(LOG_NOTICE, "[DHCP6C:%d] started in statefull.", tskid);
|
---|
3280 | #else
|
---|
3281 | #endif
|
---|
3282 |
|
---|
3283 | dly_tsk(500);
|
---|
3284 | ct = &context;
|
---|
3285 |
|
---|
3286 | /* DHCP ã¯ã©ã¤ã¢ã³ãã³ã³ããã¹ãæ§é ä½ãåæåããã*/
|
---|
3287 | init_context(ct, (ID)exinf);
|
---|
3288 |
|
---|
3289 | while (true) {
|
---|
3290 |
|
---|
3291 | /* 1ç§æ¯ã«ã¿ã¤ã ã¢ã¦ãããããã«ã¿ã¤ãã¼ãè¨å®ããã*/
|
---|
3292 | timeout((callout_func)dhcpc_timer, ct, NET_TIMER_HZ / DHCP6C_TIMER_HZ);
|
---|
3293 |
|
---|
3294 | /* ã¯ã©ã¤ã¢ã³ã DUID ãè¨å®ããã*/
|
---|
3295 | init_duid(ct);
|
---|
3296 |
|
---|
3297 | /* ã¡ãã»ã¼ã¸æ§é ä½ãåæåããã*/
|
---|
3298 | if ((error = init_cli_msg(ct)) == E_OK) {
|
---|
3299 |
|
---|
3300 | #if DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATELESS
|
---|
3301 | start_req_info(ct);
|
---|
3302 | #elif DHCP6_CLI_CFG_MODE == DHCP6_CLI_CFG_STATEFULL
|
---|
3303 | start_init(ct);
|
---|
3304 | #else
|
---|
3305 | #endif
|
---|
3306 |
|
---|
3307 | /* ã¡ã¤ã³ã«ã¼ã */
|
---|
3308 | error = dispatch_event(ct);
|
---|
3309 | }
|
---|
3310 |
|
---|
3311 | /* å
|
---|
3312 | ¨ã¦ã® TIMER ããã£ã³ã»ã«ããã*/
|
---|
3313 | cancel_all_timers(ct);
|
---|
3314 |
|
---|
3315 | /* ã¿ã¤ãã¼ãåæ¢ããã*/
|
---|
3316 | untimeout((callout_func)dhcpc_timer, ct);
|
---|
3317 |
|
---|
3318 | /* ã¡ãã»ã¼ã¸æ§é ä½ã解æ¾ããã*/
|
---|
3319 | rel_cli_msg(ct);
|
---|
3320 |
|
---|
3321 | /* ãªã¼ã¹ã解æ¾å¾ãååå¾ãæå®ããã¦ããªããã°ä¼æ¢ããã*/
|
---|
3322 | if (!(ct->flags & DHCP6C_FLAG_RENEW)) {
|
---|
3323 |
|
---|
3324 | /* ä¼æ¢ããã*/
|
---|
3325 | if (error == E_OK)
|
---|
3326 | syslog(LOG_NOTICE, "[DHCP6C] lease released, go to sleep.");
|
---|
3327 | else {
|
---|
3328 | syslog(LOG_NOTICE, "[DHCP6C] server not available, go to sleep, error: %s.", itron_strerror(error));
|
---|
3329 | ct->fsm = DHCP6_FSM_SLEEP;
|
---|
3330 | }
|
---|
3331 | slp_tsk();
|
---|
3332 | }
|
---|
3333 | ct->flags = 0;
|
---|
3334 | ct->error = E_OK;
|
---|
3335 | }
|
---|
3336 | }
|
---|
3337 |
|
---|
3338 | #endif /* of #ifdef DHCP6_CLI_CFG */
|
---|