[313] | 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: dhcp6_cli.c 313 2017-07-23 04:50:32Z coas-nagasima $
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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;
|
---|
| 351 | if (MSG2HOST16(sid1->len) != MSG2HOST16(sid2->len))
|
---|
| 352 | return false;
|
---|
| 353 |
|
---|
| 354 | return memcmp((uint8_t*)sid1 + sizeof(*sid1),
|
---|
| 355 | (uint8_t*)sid2 + sizeof(*sid2), MSG2HOST16(sid1->len)) == 0;
|
---|
| 356 | }
|
---|
| 357 |
|
---|
| 358 | /*
|
---|
| 359 | * validate_iaaddrs -- ã¢ãã¬ã¹æ
|
---|
| 360 | å ±ï¼IAADDRï¼ãæ¤è¨¼ããã
|
---|
| 361 | */
|
---|
| 362 |
|
---|
| 363 | static ER
|
---|
| 364 | validate_iaaddrs (uint8_t *opt, uint_t len)
|
---|
| 365 | {
|
---|
| 366 | T_DHCP6_OPT_IAADDR *iaa;
|
---|
| 367 |
|
---|
| 368 | /* ãªãã·ã§ã³ã IAADDR ã§ãããã¨ãæ¤è¨¼ããã*/
|
---|
| 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 */
|
---|