[388] | 1 | /*
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| 2 | * Copyright 2004 Henning Brauer <henning@openbsd.org>
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| 3 | * Copyright (c) 1995, 1996, 1997, 1998, 1999
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| 4 | * The Internet Software Consortium. All rights reserved.
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| 5 | *
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| 6 | * Redistribution and use in source and binary forms, with or without
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| 7 | * modification, are permitted provided that the following conditions
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| 8 | * are met:
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| 9 | *
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| 10 | * 1. Redistributions of source code must retain the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer.
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| 12 | * 2. Redistributions in binary form must reproduce the above copyright
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| 13 | * notice, this list of conditions and the following disclaimer in the
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| 14 | * documentation and/or other materials provided with the distribution.
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| 15 | * 3. Neither the name of The Internet Software Consortium nor the names
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| 16 | * of its contributors may be used to endorse or promote products derived
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| 17 | * from this software without specific prior written permission.
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| 18 | *
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| 19 | * THIS SOFTWARE IS PROVIDED BY THE INTERNET SOFTWARE CONSORTIUM AND
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| 20 | * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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| 21 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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| 22 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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| 23 | * DISCLAIMED. IN NO EVENT SHALL THE INTERNET SOFTWARE CONSORTIUM OR
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| 24 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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| 25 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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| 26 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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| 27 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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| 28 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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| 29 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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| 30 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 31 | * SUCH DAMAGE.
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| 32 | *
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| 33 | * This software has been written for the Internet Software Consortium
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| 34 | * by Ted Lemon <mellon@fugue.com> in cooperation with Vixie
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| 35 | * Enterprises. To learn more about the Internet Software Consortium,
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| 36 | * see ``http://www.vix.com/isc''. To learn more about Vixie
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| 37 | * Enterprises, see ``http://www.vix.com''.
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| 38 | *
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| 39 | * This client was substantially modified and enhanced by Elliot Poger
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| 40 | * for use on Linux while he was working on the MosquitoNet project at
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| 41 | * Stanford.
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| 42 | *
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| 43 | * The current version owes much to Elliot's Linux enhancements, but
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| 44 | * was substantially reorganized and partially rewritten by Ted Lemon
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| 45 | * so as to use the same networking framework that the Internet Software
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| 46 | * Consortium DHCP server uses. Much system-specific configuration code
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| 47 | * was moved into a shell script so that as support for more operating
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| 48 | * systems is added, it will not be necessary to port and maintain
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| 49 | * system-specific configuration code to these operating systems - instead,
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| 50 | * the shell script can invoke the native tools to accomplish the same
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| 51 | * purpose.
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| 52 | */
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| 53 | /*
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| 54 | * WIDE Project DHCP Implementation
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| 55 | * Copyright (c) 1995-1997 Akihiro Tominaga
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| 56 | * Copyright (c) 1995-1997 WIDE Project
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| 57 | * All rights reserved.
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| 58 | *
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| 59 | * Permission to use, copy, modify and distribute this software and its
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| 60 | * documentation is hereby granted, provided the following conditions
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| 61 | * are satisfied,
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| 62 | *
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| 63 | * 1. Both the copyright notice and this permission notice appear in
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| 64 | * all copies of the software, derivative works or modified versions,
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| 65 | * and any portions thereof, and that both notices appear in
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| 66 | * supporting documentation.
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| 67 | * 2. All advertising materials mentioning features or use of this software
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| 68 | * must display the following acknowledgement:
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| 69 | * This product includes software developed by WIDE Project and
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| 70 | * its contributors.
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| 71 | * 3. Neither the name of WIDE Project nor the names of its contributors
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| 72 | * may be used to endorse or promote products derived from this software
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| 73 | * without specific prior written permission.
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| 74 | *
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| 75 | * THIS SOFTWARE IS PROVIDED BY THE DEVELOPER ``AS IS'' AND WIDE
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| 76 | * PROJECT DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES
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| 77 | * WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. ALSO, THERE
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| 78 | * IS NO WARRANTY IMPLIED OR OTHERWISE, NOR IS SUPPORT PROVIDED.
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| 79 | *
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| 80 | * Feedback of the results generated from any improvements or
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| 81 | * extensions made to this software would be much appreciated.
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| 82 | * Any such feedback should be sent to:
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| 83 | *
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| 84 | * Akihiro Tominaga
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| 85 | * WIDE Project
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| 86 | * Keio University, Endo 5322, Kanagawa, Japan
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| 87 | * (E-mail: dhcp-dist@wide.ad.jp)
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| 88 | *
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| 89 | * WIDE project has the rights to redistribute these changes.
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| 90 | */
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| 91 | /*
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| 92 | * TINET (TCP/IP Protocol Stack)
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| 93 | *
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| 94 | * Copyright (C) 2011 by Dep. of Computer Science and Engineering
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| 95 | * Tomakomai National College of Technology, JAPAN
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| 96 | *
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| 97 | * ä¸è¨èä½æ¨©è
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| 98 | ã¯ï¼ä»¥ä¸ã® (1)ï½(4) ã®æ¡ä»¶ãï¼Free Software Foundation
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| 99 | * ã«ãã£ã¦å
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| 100 | ¬è¡¨ããã¦ãã GNU General Public License ã® Version 2 ã«è¨
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| 101 | * è¿°ããã¦ããæ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§ã¢ï¼æ¬ã½ããã¦ã§ã¢
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| 102 | * ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹å¤ã»åé
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| 103 | å¸ï¼ä»¥ä¸ï¼
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| 104 | * å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
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| 105 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
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| 106 | * 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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| 107 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
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| 108 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 109 | * ç¨ã§ããå½¢ã§åé
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| 110 | å¸ããå ´åã«ã¯ï¼åé
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| 111 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
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| 112 | * è
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| 113 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
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| 114 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 115 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 116 | * ç¨ã§ããªãå½¢ã§åé
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| 117 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®ããããã®æ¡ä»¶ãæºããã
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| 118 | * ã¨ï¼
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| 119 | * (a) åé
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| 120 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
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| 121 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
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| 122 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 123 | * (b) åé
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| 124 | å¸ã®å½¢æ
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| 125 | ãï¼å¥ã«å®ããæ¹æ³ã«ãã£ã¦ï¼TOPPERSããã¸ã§ã¯ãã«
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| 126 | * å ±åãããã¨ï¼
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| 127 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
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| 128 | * 害ãããï¼ä¸è¨èä½æ¨©è
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| 129 | ããã³TOPPERSããã¸ã§ã¯ããå
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| 130 | 責ãããã¨ï¼
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| 131 | *
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| 132 | * æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
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| 133 | ã
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| 134 | * ãã³TOPPERSããã¸ã§ã¯ãã¯ï¼æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ãã®é©ç¨å¯è½æ§ã
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| 135 | * å«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´
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| 136 | * æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ãã®è²¬ä»»ãè² ããªãï¼
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| 137 | *
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| 138 | * @(#) $Id: dhcp4_cli.c 388 2019-05-22 11:25:18Z coas-nagasima $
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| 139 | */
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| 140 |
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| 141 | #include <string.h>
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| 142 |
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| 143 | #ifdef TARGET_KERNEL_ASP
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| 144 |
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| 145 | #include <kernel.h>
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| 146 | #include <sil.h>
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| 147 | #include <t_syslog.h>
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| 148 | #include "kernel_cfg.h"
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| 149 |
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| 150 | #endif /* of #ifdef TARGET_KERNEL_ASP */
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| 151 |
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| 152 | #ifdef TARGET_KERNEL_JSP
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| 153 |
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| 154 | #include <s_services.h>
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| 155 | #include <t_services.h>
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| 156 | #include "kernel_id.h"
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| 157 |
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| 158 | #endif /* of #ifdef TARGET_KERNEL_JSP */
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| 159 |
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| 160 | #include <tinet_defs.h>
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| 161 | #include <tinet_config.h>
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| 162 |
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| 163 | #include <net/if.h>
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| 164 | #include <net/ethernet.h>
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| 165 | #include <net/net.h>
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| 166 | #include <net/net_endian.h>
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| 167 | #include <net/net_var.h>
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| 168 | #include <net/net_timer.h>
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| 169 |
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| 170 | #include <netinet/in.h>
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| 171 | #include <netinet/in_var.h>
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| 172 | #include <netinet/in_itron.h>
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| 173 | #include <netinet/if_ether.h>
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| 174 |
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| 175 | #include <net/if_var.h>
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| 176 |
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| 177 | #include <netapp/netapp.h>
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| 178 | #include <netapp/netapp_var.h>
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| 179 | #include <netapp/dhcp4_cli.h>
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| 180 | #include <netapp/dhcp4_cli_var.h>
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| 181 | #include <netapp/resolver.h>
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| 182 | #include "lcd.h"
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| 183 |
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| 184 | /*
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| 185 | * DHCP ã¯ã©ã¤ã¢ã³ãã¿ã¹ã¯
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| 186 | */
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| 187 |
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| 188 | #ifdef DHCP4_CLI_CFG
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| 189 |
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| 190 | /*
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| 191 | * å¤æ°
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| 192 | */
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| 193 |
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| 194 | static T_DHCP4_CLI_CONTEXT context; /* ã¯ã©ã¤ã¢ã³ãã³ã³ããã¹ã */
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| 195 | static uint8_t magicno[DHCP4_MAGIC_LEN] = DHCP4_RFC1048_MAGIC; /* magic çªå·ï¼RFC1048ï¼*/
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| 196 |
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| 197 | /* å¿
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| 198 | é ãªãã·ã§ã³ãªã¹ã */
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| 199 | #ifdef DHCP4_CLI_CFG_REQUIRED_OLIST
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| 200 | static uint8_t required_plist[] = DHCP4_CLI_CFG_REQUIRED_OLIST;
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| 201 | #endif
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| 202 |
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| 203 | /* è¦æ±ãªãã·ã§ã³ãªã¹ã */
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| 204 | #ifdef DHCP4_CLI_CFG_REQUEST_OLIST
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| 205 | static uint8_t request_plist[] = DHCP4_CLI_CFG_REQUEST_OLIST;
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| 206 | #endif
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| 207 |
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| 208 | #ifdef SEM_DHCP4_CLI_TIMER
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| 209 | #define DHCP4_CLI_TIMER_LOCK() do { syscall(wai_sem(SEM_DHCP4_CLI_TIMER)); } while(0)
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| 210 | #define DHCP4_CLI_TIMER_UNLOCK() do { syscall(sig_sem(SEM_DHCP4_CLI_TIMER)); } while(0)
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| 211 | #else
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| 212 | #define DHCP4_CLI_TIMER_LOCK() do { } while(0)
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| 213 | #define DHCP4_CLI_TIMER_UNLOCK() do { } while(0)
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| 214 | #endif
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| 215 |
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| 216 | #ifdef SEM_DHCP4_CLI_READY
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| 217 | #define DHCP4_CLI_READY_WAIT(ct) do { syscall(wai_sem(SEM_DHCP4_CLI_READY)); } while(0)
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| 218 | #define DHCP4_CLI_READY_SIGNAL(ct) do { syscall(sig_sem(SEM_DHCP4_CLI_READY)); } while(0)
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| 219 | #else
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| 220 | #define DHCP4_CLI_READY_WAIT(ct) do { } while(0)
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| 221 | #define DHCP4_CLI_READY_SIGNAL(ct) do { syscall(wup_tsk(ct->tskid)); } while(0)
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| 222 | #endif
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| 223 |
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| 224 | /*
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| 225 | * dhcp4_cksum -- ãã§ãã¯ãµã ã®è¨ç®é¢æ°
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| 226 | */
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| 227 |
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| 228 | static uint32_t
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| 229 | dhcp4_cksum (void *data, uint_t len /*ãªã¯ãããåä½*/)
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| 230 | {
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| 231 | uint32_t carry, sum = 0;
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| 232 |
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| 233 | for ( ; len > 0; len -= 2) {
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| 234 | sum += (*(uint8_t*)data << 8) + *((uint8_t*)data + 1);
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| 235 | data = (uint8_t*)data + 2;
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| 236 | }
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| 237 |
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| 238 | while (sum >= 0x00010000) {
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| 239 | carry = sum >> 16;
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| 240 | sum = (sum & 0xffff) + carry;
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| 241 | }
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| 242 |
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| 243 | return sum;
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| 244 | }
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| 245 |
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| 246 | /*
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| 247 | * create_xid -- ãã©ã³ã¶ã¯ã·ã§ã³ ID ãçæããã
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| 248 | */
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| 249 |
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| 250 | static uint32_t
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| 251 | create_xid (void)
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| 252 | {
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| 253 | T_IF_SOFTC *ic;
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| 254 | SYSTIM time;
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| 255 |
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| 256 | ic = IF_ETHER_NIC_GET_SOFTC();
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| 257 | get_tim(&time);
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| 258 | return (dhcp4_cksum((void*)&ic->ifaddr.lladdr, ETHER_ADDR_LEN) << 16)
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| 259 | + dhcp4_cksum((void*)&time, sizeof(time));
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| 260 | }
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| 261 |
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| 262 | /*
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| 263 | * find_option_sub -- æå®ãããªãã·ã§ã³ãæ¢ç´¢ããã
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| 264 | *
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| 265 | * 注æ: å¼æ° size ã 0 ã®æã¯ãªãã·ã§ã³ãµã¤ãºãæ¤è¨¼ããªãã
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| 266 | */
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| 267 |
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| 268 | static uint8_t *
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| 269 | find_option_sub (T_DHCP4_CLI_MSG *msg, uint_t off, uint_t len,
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| 270 | uint_t tag, uint_t size, bool_t overload)
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| 271 | {
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| 272 | uint8_t *opt, *tmp;
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| 273 |
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| 274 | opt = (uint8_t*)&msg->msg + off;
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| 275 | while (opt < (uint8_t*)&msg->msg + off + len && *opt != DHCP4_OPT_END) {
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| 276 | if (*opt == DHCP4_OPT_PAD)
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| 277 | opt ++;
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| 278 | else if ((*opt == DHCP4_OPT_OPT_OVERLOAD) && overload) {
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| 279 | if (*(opt + 2) & DHCP4_OPTOL_FILE) {
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| 280 | tmp = find_option_sub(msg, DHCP4_FILE_OFFSET, DHCP4_FILE_LEN, tag, len, false);
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| 281 | if (tmp != NULL)
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| 282 | return tmp;
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| 283 | }
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| 284 | if (*(opt + 2) & DHCP4_OPTOL_SNAME) {
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| 285 | tmp = find_option_sub(msg, DHCP4_SNAME_OFFSET, DHCP4_SNAME_LEN, tag, len, false);
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| 286 | if (tmp != NULL)
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| 287 | return tmp;
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| 288 | }
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| 289 | opt += *(opt + 1) + 2;
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| 290 | }
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| 291 | else if (*opt == tag && (size == 0 || *(opt + 1) == size))
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| 292 | return opt;
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| 293 | else
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| 294 | opt += *(opt + 1) + 2;
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| 295 | }
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| 296 | return NULL;
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| 297 | }
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| 298 |
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| 299 | /*
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| 300 | * find_option -- æå®ãããªãã·ã§ã³ãæ¢ç´¢ããã
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| 301 | *
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| 302 | * 注æ: å¼æ° size ã 0 ã®æã¯ãªãã·ã§ã³ãµã¤ãºãæ¤è¨¼ããªãã
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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 (T_DHCP4_CLI_MSG *msg, uint_t tag, uint_t size)
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| 307 | {
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| 308 | return find_option_sub(msg, DHCP4_OPTION_OFFSET + DHCP4_MAGIC_LEN,
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| 309 | msg->len - (DHCP4_OPTION_OFFSET + DHCP4_MAGIC_LEN),
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| 310 | tag, size, true);
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| 311 | }
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| 312 |
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| 313 | /*
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| 314 | * is_equal_sid -- ã¡ãã»ã¼ã¸å
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| 315 | ã® SERVER ID ãæ¯è¼ããã
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| 316 | */
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| 317 |
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| 318 | static bool_t
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| 319 | is_equal_sid (T_DHCP4_CLI_MSG *msg1, T_DHCP4_CLI_MSG *msg2)
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| 320 | {
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| 321 | uint8_t *opt1, *opt2;
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| 322 |
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| 323 | if ((opt1 = find_option(msg1, DHCP4_OPT_SERVER_ID, sizeof(T_IN4_ADDR))) == NULL)
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| 324 | return false;
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| 325 | if ((opt2 = find_option(msg2, DHCP4_OPT_SERVER_ID, sizeof(T_IN4_ADDR))) == NULL)
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| 326 | return false;
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| 327 |
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| 328 | return msg2host32(opt1) == msg2host32(opt2);
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| 329 | }
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| 330 |
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| 331 | /*
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| 332 | * timer_value -- ã¡ãã»ã¼ã¸ããæéæ
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| 333 | å ±ãåãåºãã
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| 334 | */
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| 335 |
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| 336 | static uint32_t
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| 337 | timer_value (T_DHCP4_CLI_MSG *msg, uint_t tag, uint32_t def_value)
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| 338 | {
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| 339 | uint8_t *opt;
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| 340 | uint32_t seconds;
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| 341 |
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| 342 | if ((opt = find_option(msg, tag, sizeof(uint32_t))) == NULL)
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| 343 | return def_value;
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| 344 | else {
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| 345 |
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| 346 | /* ãµã¼ãããã®ãªã¼ã¹æéã¯[s]ã*/
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| 347 | seconds = msg2host32(opt + 2);
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| 348 |
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| 349 | /* ã³ã³ããã¹ãå
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| 350 | ã®ãªã¼ã¹æé㯠SYSTIM_HZã*/
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| 351 | if (seconds == DHCP4_TIME_INFINITY)
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| 352 | return DHCP4_TIME_INFINITY;
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| 353 | else if (seconds > SYSTIM2SEC(DHCP4_TIME_INFINITY))
|
---|
| 354 | return DHCP4_TIME_INFINITY;
|
---|
| 355 | else
|
---|
| 356 | return SEC2SYSTIM(seconds);
|
---|
| 357 | }
|
---|
| 358 | }
|
---|
| 359 |
|
---|
| 360 | /*
|
---|
| 361 | * rel_addr -- IPv4 ã¢ãã¬ã¹ããµãããããã¹ã¯ãéççµè·¯è¡¨ã解æ¾ããã
|
---|
| 362 | */
|
---|
| 363 |
|
---|
| 364 | static void
|
---|
| 365 | rel_addr (void)
|
---|
| 366 | {
|
---|
| 367 | ER error;
|
---|
| 368 | uint_t count = 0;
|
---|
| 369 |
|
---|
| 370 | if ((error = in4_add_ifaddr(IPV4_ADDRANY, IPV4_ADDRANY)) != E_OK) {
|
---|
| 371 | syslog(LOG_NOTICE, "[DHCP4C] error, IPv4 addr: %s", itron_strerror(error));
|
---|
| 372 | count ++;
|
---|
| 373 | }
|
---|
| 374 |
|
---|
| 375 | if ((error = in4_add_route(0, IPV4_ADDRANY, IPV4_ADDRANY, IPV4_ADDRANY)) != E_OK) {
|
---|
| 376 | syslog(LOG_NOTICE, "[DHCP4C] error, release routing table: %s", itron_strerror(error));
|
---|
| 377 | count ++;
|
---|
| 378 | }
|
---|
| 379 |
|
---|
| 380 | if ((error = in4_add_route(1, IPV4_ADDRANY, IPV4_ADDRANY, IPV4_ADDRANY)) != E_OK) {
|
---|
| 381 | syslog(LOG_NOTICE, "[DHCP4C] error, release routing table: %s", itron_strerror(error));
|
---|
| 382 | count ++;
|
---|
| 383 | }
|
---|
| 384 |
|
---|
| 385 | if ((error = in4_add_route(2, 0xffffffff, 0xffffffff, IPV4_ADDRANY)) != E_OK) {
|
---|
| 386 | syslog(LOG_NOTICE, "[DHCP4C] error, release routing table: %s", itron_strerror(error));
|
---|
| 387 | count ++;
|
---|
| 388 | }
|
---|
| 389 |
|
---|
| 390 | if (count == 0) {
|
---|
| 391 | syslog(LOG_NOTICE, "[DHCP4C] release IPv4 addr.");
|
---|
| 392 |
|
---|
| 393 | #if 0
|
---|
| 394 | #ifdef USE_LCD
|
---|
| 395 | dly_tsk(1 * 1000);
|
---|
| 396 | lcd_puts(LCD_PORTID, "0.0.0.0\n");
|
---|
| 397 | #endif /* of #ifdef USE_LCD */
|
---|
| 398 | #endif
|
---|
| 399 | ether_set_down();
|
---|
| 400 | }
|
---|
| 401 | }
|
---|
| 402 |
|
---|
| 403 | /*
|
---|
| 404 | * rel_options -- ãªã¼ã¹ããããªãã·ã§ã³ã解æãã¦å¤ã解æ¾ããã
|
---|
| 405 | */
|
---|
| 406 |
|
---|
| 407 | static void
|
---|
| 408 | rel_options (T_DHCP4_CLI_CONTEXT *ct, uint_t off, uint_t len, bool_t overload)
|
---|
| 409 | {
|
---|
| 410 | #if defined(USE_RESOLVER)
|
---|
| 411 | T_IN4_ADDR addr;
|
---|
| 412 | #endif
|
---|
| 413 |
|
---|
| 414 | uint8_t *opt;
|
---|
| 415 |
|
---|
| 416 | opt = (uint8_t*)&ct->act_msg->msg + off;
|
---|
| 417 | while (opt < (uint8_t*)&ct->act_msg->msg + off + len && *opt != DHCP4_OPT_END) {
|
---|
| 418 | if (*opt == DHCP4_OPT_PAD)
|
---|
| 419 | opt ++;
|
---|
| 420 | else if ((*opt == DHCP4_OPT_OPT_OVERLOAD) && overload) {
|
---|
| 421 | if (*(opt + 2) & DHCP4_OPTOL_FILE)
|
---|
| 422 | rel_options(ct, DHCP4_FILE_OFFSET, DHCP4_FILE_LEN, false);
|
---|
| 423 | if (*(opt + 2) & DHCP4_OPTOL_SNAME)
|
---|
| 424 | rel_options(ct, DHCP4_SNAME_OFFSET, DHCP4_SNAME_LEN, false);
|
---|
| 425 | opt += *(opt + 1) + 2;
|
---|
| 426 | }
|
---|
| 427 | else {
|
---|
| 428 |
|
---|
| 429 | switch (*opt) {
|
---|
| 430 |
|
---|
| 431 | #if defined(USE_RESOLVER)
|
---|
| 432 |
|
---|
| 433 | case DHCP4_OPT_DNS_SERVER:
|
---|
| 434 | addr = IPV4_ADDRANY;
|
---|
| 435 | dns_in4_set_addr(&addr);
|
---|
| 436 | break;
|
---|
| 437 |
|
---|
| 438 | case DHCP4_OPT_HOST_NAME:
|
---|
| 439 | break;
|
---|
| 440 |
|
---|
| 441 | case DHCP4_OPT_DOMAIN_NAME:
|
---|
| 442 | dns_in4_set_dname("", 0);
|
---|
| 443 | break;
|
---|
| 444 |
|
---|
| 445 | #else /* of #if defined(USE_RESOLVER) */
|
---|
| 446 |
|
---|
| 447 | case DHCP4_OPT_DNS_SERVER:
|
---|
| 448 | case DHCP4_OPT_HOST_NAME:
|
---|
| 449 | case DHCP4_OPT_DOMAIN_NAME:
|
---|
| 450 |
|
---|
| 451 | #endif /* of #if defined(USE_RESOLVER) */
|
---|
| 452 |
|
---|
| 453 | case DHCP4_OPT_SUBNET_MASK:
|
---|
| 454 | case DHCP4_OPT_ROUTER:
|
---|
| 455 | case DHCP4_OPT_LEASE_TIME:
|
---|
| 456 | case DHCP4_OPT_RENEWAL_T1:
|
---|
| 457 | case DHCP4_OPT_REBINDING_T2:
|
---|
| 458 | break;
|
---|
| 459 |
|
---|
| 460 | default:
|
---|
| 461 | break;
|
---|
| 462 | }
|
---|
| 463 |
|
---|
| 464 | opt += *(opt + 1) + 2;
|
---|
| 465 | }
|
---|
| 466 | }
|
---|
| 467 | }
|
---|
| 468 |
|
---|
| 469 | /*
|
---|
| 470 | * rel_lease -- ãªã¼ã¹ãããæ
|
---|
| 471 | å ±ã解æ¾ããã
|
---|
| 472 | */
|
---|
| 473 |
|
---|
| 474 | static void
|
---|
| 475 | rel_lease (T_DHCP4_CLI_CONTEXT *ct)
|
---|
| 476 | {
|
---|
| 477 | /* æå¹ãªãªã¼ã¹ã»ã¡ãã»ã¼ã¸æ§é ä½ãç¡ããã°ä½ãããªãã*/
|
---|
| 478 | if (ct->act_msg == NULL)
|
---|
| 479 | return;
|
---|
| 480 |
|
---|
| 481 | /* ãªã¼ã¹ããããªãã·ã§ã³ã解æãã¦å¤ã解æ¾ããã*/
|
---|
| 482 | rel_options(ct, DHCP4_OPTION_OFFSET + DHCP4_MAGIC_LEN,
|
---|
| 483 | ct->act_msg->len - (DHCP4_OPTION_OFFSET + DHCP4_MAGIC_LEN), true);
|
---|
| 484 | rel_addr();
|
---|
| 485 |
|
---|
| 486 | /* æå¹ãªãªã¼ã¹ã»ã¡ãã»ã¼ã¸æ§é ä½ã解æ¾ããã*/
|
---|
| 487 | syscall(rel_mpf(MPF_DHCP4_CLI_MSG, (void*)ct->act_msg));
|
---|
| 488 | ct->act_msg = NULL;
|
---|
| 489 | }
|
---|
| 490 |
|
---|
| 491 | /*
|
---|
| 492 | * set_addr -- IPv4 ã¢ãã¬ã¹ããµãããããã¹ã¯ãéççµè·¯è¡¨ãè¨å®ããã
|
---|
| 493 | */
|
---|
| 494 |
|
---|
| 495 | static void
|
---|
| 496 | set_addr (T_DHCP4_CLI_CONTEXT *ct, uint8_t *mopt, uint8_t *ropt)
|
---|
| 497 | {
|
---|
| 498 | ER error;
|
---|
| 499 | T_IN4_ADDR addr, mask, router, net_addr;
|
---|
| 500 |
|
---|
| 501 | addr = ntohl(ct->act_msg->msg.yiaddr);
|
---|
| 502 | mask = msg2host32(mopt + 2);
|
---|
| 503 | net_addr = addr & mask;
|
---|
| 504 | router = msg2host32(ropt + 2);
|
---|
| 505 |
|
---|
| 506 | if ((error = in4_add_ifaddr(addr, mask)) != E_OK)
|
---|
| 507 | syslog(LOG_NOTICE, "[DHCP4C] error, set IPv4 addr: %s", itron_strerror(error));
|
---|
| 508 |
|
---|
| 509 | if ((error = in4_add_route(0, IPV4_ADDRANY, IPV4_ADDRANY, router)) != E_OK)
|
---|
| 510 | syslog(LOG_NOTICE, "[DHCP4C] error, set routing table: %s", itron_strerror(error));
|
---|
| 511 |
|
---|
| 512 | if ((error = in4_add_route(1, net_addr, mask, IPV4_ADDRANY)) != E_OK)
|
---|
| 513 | syslog(LOG_NOTICE, "[DHCP4C] error, set routing table: %s", itron_strerror(error));
|
---|
| 514 |
|
---|
| 515 | if ((error = in4_add_route(2, 0xffffffff, 0xffffffff, IPV4_ADDRANY)) != E_OK)
|
---|
| 516 | syslog(LOG_NOTICE, "[DHCP4C] error, set routing table: %s", itron_strerror(error));
|
---|
| 517 |
|
---|
| 518 | if (error == E_OK) {
|
---|
| 519 | syslog(LOG_NOTICE, "[DHCP4C] set IPv4 addr: %s.", ip2str(NULL, &addr));
|
---|
| 520 |
|
---|
| 521 | #ifdef USE_LCD
|
---|
| 522 | dly_tsk(1 * 1000);
|
---|
| 523 | lcd_puts(LCD_PORTID, ip2str(NULL, &addr));
|
---|
| 524 | lcd_putc(LCD_PORTID, '\n');
|
---|
| 525 | #endif /* of #ifdef USE_LCD */
|
---|
| 526 | ether_set_up();
|
---|
| 527 | }
|
---|
| 528 | }
|
---|
| 529 |
|
---|
| 530 | /*
|
---|
| 531 | * set_options -- ãªã¼ã¹ããããªãã·ã§ã³ã解æãã¦å¤ãè¨å®ããã
|
---|
| 532 | */
|
---|
| 533 |
|
---|
| 534 | static void
|
---|
| 535 | set_options (T_DHCP4_CLI_CONTEXT *ct, uint_t off, uint_t len, bool_t overload)
|
---|
| 536 | {
|
---|
| 537 | #if defined(USE_RESOLVER)
|
---|
| 538 | T_IN4_ADDR addr;
|
---|
| 539 | #endif
|
---|
| 540 |
|
---|
| 541 | uint8_t *opt, *mopt = NULL, *ropt = NULL;
|
---|
| 542 |
|
---|
| 543 | opt = (uint8_t*)&ct->act_msg->msg + off;
|
---|
| 544 | while (opt < (uint8_t*)&ct->act_msg->msg + off + len && *opt != DHCP4_OPT_END) {
|
---|
| 545 | if (*opt == DHCP4_OPT_PAD)
|
---|
| 546 | opt ++;
|
---|
| 547 | else if ((*opt == DHCP4_OPT_OPT_OVERLOAD) && overload) {
|
---|
| 548 | if (*(opt + 2) & DHCP4_OPTOL_FILE)
|
---|
| 549 | set_options(ct, DHCP4_FILE_OFFSET, DHCP4_FILE_LEN, false);
|
---|
| 550 | if (*(opt + 2) & DHCP4_OPTOL_SNAME)
|
---|
| 551 | set_options(ct, DHCP4_SNAME_OFFSET, DHCP4_SNAME_LEN, false);
|
---|
| 552 | opt += *(opt + 1) + 2;
|
---|
| 553 | }
|
---|
| 554 | else {
|
---|
| 555 |
|
---|
| 556 | switch (*opt) {
|
---|
| 557 | case DHCP4_OPT_SUBNET_MASK:
|
---|
| 558 | mopt = opt;
|
---|
| 559 | break;
|
---|
| 560 |
|
---|
| 561 | case DHCP4_OPT_ROUTER:
|
---|
| 562 | ropt = opt;
|
---|
| 563 | break;
|
---|
| 564 |
|
---|
| 565 | #if defined(USE_RESOLVER)
|
---|
| 566 |
|
---|
| 567 | case DHCP4_OPT_DNS_SERVER:
|
---|
| 568 | addr = msg2host32(opt + 2);
|
---|
| 569 | dns_in4_set_addr(&addr);
|
---|
| 570 | break;
|
---|
| 571 |
|
---|
| 572 | case DHCP4_OPT_HOST_NAME:
|
---|
| 573 | break;
|
---|
| 574 |
|
---|
| 575 | case DHCP4_OPT_DOMAIN_NAME:
|
---|
| 576 | dns_in4_set_dname(opt + 2, *(opt + 1));
|
---|
| 577 | break;
|
---|
| 578 |
|
---|
| 579 | #else /* of #if defined(USE_RESOLVER) */
|
---|
| 580 |
|
---|
| 581 | case DHCP4_OPT_DNS_SERVER:
|
---|
| 582 | case DHCP4_OPT_HOST_NAME:
|
---|
| 583 | case DHCP4_OPT_DOMAIN_NAME:
|
---|
| 584 |
|
---|
| 585 | #endif /* of #if defined(USE_RESOLVER) */
|
---|
| 586 |
|
---|
| 587 | case DHCP4_OPT_LEASE_TIME:
|
---|
| 588 | case DHCP4_OPT_RENEWAL_T1:
|
---|
| 589 | case DHCP4_OPT_REBINDING_T2:
|
---|
| 590 | break;
|
---|
| 591 |
|
---|
| 592 | default:
|
---|
| 593 | break;
|
---|
| 594 | }
|
---|
| 595 |
|
---|
| 596 | opt += *(opt + 1) + 2;
|
---|
| 597 | }
|
---|
| 598 | }
|
---|
| 599 | if (!(mopt == NULL || ropt == NULL))
|
---|
| 600 | set_addr(ct, mopt, ropt);
|
---|
| 601 | }
|
---|
| 602 |
|
---|
| 603 | /*
|
---|
| 604 | * set_lease -- ãªã¼ã¹ãããæ
|
---|
| 605 | å ±ãè¨å®ããã
|
---|
| 606 | */
|
---|
| 607 |
|
---|
| 608 | static void
|
---|
| 609 | set_lease (T_DHCP4_CLI_CONTEXT *ct)
|
---|
| 610 | {
|
---|
| 611 | /* ãªã¼ã¹ããããªãã·ã§ã³ã解æãã¦å¤ãè¨å®ããã*/
|
---|
| 612 | set_options(ct, DHCP4_OPTION_OFFSET + DHCP4_MAGIC_LEN,
|
---|
| 613 | ct->act_msg->len - (DHCP4_OPTION_OFFSET + DHCP4_MAGIC_LEN), true);
|
---|
| 614 | }
|
---|
| 615 |
|
---|
| 616 | /*
|
---|
| 617 | * validate_duplicate -- æå®ããã IPv4 ã¢ãã¬ã¹ã使ããã¦ããªããæ¤è¨¼ããã
|
---|
| 618 | *
|
---|
| 619 | * 使ããã¦ããªãæ㯠true ãè¿ãã
|
---|
| 620 | */
|
---|
| 621 |
|
---|
| 622 | static bool_t
|
---|
| 623 | validate_duplicate (T_DHCP4_CLI_MSG *msg)
|
---|
| 624 | {
|
---|
| 625 | T_IN4_ADDR yiaddr;
|
---|
| 626 |
|
---|
| 627 | /* æå®ããã IPv4 ã¢ãã¬ã¹ã ADDR ANY ãªã使ããã¦ããªãã¨å¤æããã*/
|
---|
| 628 | yiaddr = ntohl(msg->msg.yiaddr);
|
---|
| 629 | if (yiaddr == IPV4_ADDRANY)
|
---|
| 630 | return true;
|
---|
| 631 |
|
---|
| 632 | /* ARP ãã£ãã·ã¥ã«ããã°ä½¿ããã¦ããã¨å¤æããã*/
|
---|
| 633 | if (arp_lookup(yiaddr, false) != NULL)
|
---|
| 634 | return false;
|
---|
| 635 |
|
---|
| 636 | /*
|
---|
| 637 | * ARP è¦æ±ãåºåã㦠TMO_DHCP4C_ARP_WAIT å¾
|
---|
| 638 | ã¡ã
|
---|
| 639 | * ARP ãã£ãã·ã¥ã«ãªããã°ä½¿ããã¦ããªãã¨å¤æããã
|
---|
| 640 | */
|
---|
| 641 | arp_request(&IF_ETHER_NIC_GET_SOFTC()->ifaddr, yiaddr);
|
---|
| 642 | dly_tsk(TMO_DHCP4C_ARP_WAIT);
|
---|
| 643 | return arp_lookup(yiaddr, false) == NULL;
|
---|
| 644 | }
|
---|
| 645 |
|
---|
| 646 | /*
|
---|
| 647 | * validate_rcv_msg -- åä¿¡ã¡ãã»ã¼ã¸ãæ¤è¨¼ããã
|
---|
| 648 | */
|
---|
| 649 |
|
---|
| 650 | static ER
|
---|
| 651 | validate_rcv_msg (T_DHCP4_CLI_CONTEXT *ct, T_DHCP4_CLI_MSG *msg)
|
---|
| 652 | {
|
---|
| 653 | uint8_t *opt;
|
---|
| 654 |
|
---|
| 655 | /* packet type ã DHCP4_REPLY ã§ãããã¨ã確èªããã*/
|
---|
| 656 | if (!(msg->msg.op == DHCP4_REPLY))
|
---|
| 657 | return false;
|
---|
| 658 |
|
---|
| 659 | /* ã¡ãã»ã¼ã¸ã¿ã¤ããªãã·ã§ã³ããããã¨ã確èªããã*/
|
---|
| 660 | if ((opt = find_option(msg, DHCP4_OPT_MSG_TYPE, 1)) == NULL)
|
---|
| 661 | return E_PAR;
|
---|
| 662 |
|
---|
| 663 | /* ã¡ãã»ã¼ã¸ã®ã¿ã¤ããä¸è´ãã¦ãããã¨ãæ¤è¨¼ããã*/
|
---|
| 664 | msg->type = *(opt + 2);
|
---|
| 665 | switch (ct->fsm) {
|
---|
| 666 |
|
---|
| 667 | case DHCP4_FSM_SELECT:
|
---|
| 668 | if (!(msg->type == DHCP4_MTYPE_OFFER))
|
---|
| 669 | return E_PAR;
|
---|
| 670 | break;
|
---|
| 671 |
|
---|
| 672 | case DHCP4_FSM_REQUEST:
|
---|
| 673 | case DHCP4_FSM_REBOOT:
|
---|
| 674 | case DHCP4_FSM_RENEW:
|
---|
| 675 | case DHCP4_FSM_REBIND:
|
---|
| 676 | case DHCP4_FSM_REL_INFO:
|
---|
| 677 | if (!((msg->type == DHCP4_MTYPE_ACK) || (msg->type == DHCP4_MTYPE_NAK)))
|
---|
| 678 | return E_PAR;
|
---|
| 679 | break;
|
---|
| 680 |
|
---|
| 681 | case DHCP4_FSM_INIT:
|
---|
| 682 | case DHCP4_FSM_BOUND:
|
---|
| 683 | case DHCP4_FSM_INIT_REBOOT:
|
---|
| 684 | return E_PAR;
|
---|
| 685 | break;
|
---|
| 686 |
|
---|
| 687 | default:
|
---|
| 688 | syslog(LOG_NOTICE, "[DHCP4C] error, unknown state: %d.", ct->fsm);
|
---|
| 689 | return E_PAR;
|
---|
| 690 | break;
|
---|
| 691 | }
|
---|
| 692 |
|
---|
| 693 | /* ãã¸ãã¯çªå·ãæ¤è¨¼ããã*/
|
---|
| 694 | if (memcmp((uint8_t*)&msg->msg.options, magicno, DHCP4_MAGIC_LEN))
|
---|
| 695 | return E_PAR;
|
---|
| 696 |
|
---|
| 697 | /* ãã©ã³ã¶ã¯ã·ã§ã³ ID ãç°ãªã£ã¦ããã°ã¨ã©ã¼ */
|
---|
| 698 | if (ntohl(msg->msg.xid) != ct->xid)
|
---|
| 699 | return E_PAR;
|
---|
| 700 |
|
---|
| 701 | /* ãã¼ãã¦ã§ã¢ã¢ãã¬ã¹é·ã 6ï¼MAC ã¢ãã¬ã¹é·ï¼ã§ãªããã°ã¨ã©ã¼ */
|
---|
| 702 | if (msg->msg.hlen != ETHER_ADDR_LEN)
|
---|
| 703 | return E_PAR;
|
---|
| 704 |
|
---|
| 705 | /* ãã¼ãã¦ã§ã¢ã¢ãã¬ã¹ãç°ãªã£ã¦ããã°ã¨ã©ã¼ */
|
---|
| 706 | if (memcmp(&msg->msg.chaddr, &ct->sc->ifaddr.lladdr, sizeof(ct->sc->ifaddr.lladdr)))
|
---|
| 707 | return E_PAR;
|
---|
| 708 |
|
---|
| 709 | /*
|
---|
| 710 | * ã¡ãã»ã¼ã¸ã¿ã¤ãã OFFER ã®å ´åã¯ã
|
---|
| 711 | * ARP ã使ç¨ãã¦ãæå®ããã IPv4 ã¢ãã¬ã¹ã使ããã¦ããªããæ¤è¨¼ããã
|
---|
| 712 | * 使ããã¦ããæã¯ãä»ã® IPv4 ã¢ãã¬ã¹ã®æä¾ãå¾
|
---|
| 713 | ã¤ã
|
---|
| 714 | */
|
---|
| 715 | if (msg->type == DHCP4_MTYPE_OFFER) {
|
---|
| 716 | if (!validate_duplicate(msg))
|
---|
| 717 | return E_PAR;
|
---|
| 718 | }
|
---|
| 719 |
|
---|
| 720 | return E_OK;
|
---|
| 721 | }
|
---|
| 722 |
|
---|
| 723 | /*
|
---|
| 724 | * eval_prefer -- åä¿¡ã¡ãã»ã¼ã¸ã®æ¨å¥¨åº¦ãè©ä¾¡ããã
|
---|
| 725 | */
|
---|
| 726 |
|
---|
| 727 | static void
|
---|
| 728 | eval_prefer (T_DHCP4_CLI_MSG *msg)
|
---|
| 729 | {
|
---|
| 730 | int ix;
|
---|
| 731 |
|
---|
| 732 | /* ç¡å¹ã®å ´åã¯çµäºããã*/
|
---|
| 733 | if (msg == NULL)
|
---|
| 734 | return;
|
---|
| 735 |
|
---|
| 736 | /* æå®ããã IPv4 ã¢ãã¬ã¹ã ADDR ANY ãªãæ¨å¥¨åº¦ã 0ã«è¨å®ããã*/
|
---|
| 737 | if (ntohl(msg->msg.yiaddr) == IPV4_ADDRANY)
|
---|
| 738 | msg->prefer = 0;
|
---|
| 739 | else
|
---|
| 740 | msg->prefer = DHCP4_CLI_CFG_PREFER_ADDR;
|
---|
| 741 |
|
---|
| 742 | #if defined(DHCP4_CLI_CFG_REQUEST_OLIST)
|
---|
| 743 |
|
---|
| 744 | /* è¦æ±ãªãã·ã§ã³ãæ¤è¨¼ããã*/
|
---|
| 745 | for (ix = sizeof(request_plist); ix -- > 0; ) {
|
---|
| 746 | if (find_option(msg, request_plist[ix], 0) != NULL)
|
---|
| 747 | msg->prefer ++;
|
---|
| 748 | }
|
---|
| 749 |
|
---|
| 750 | #endif /* of #if defined(DHCP4_CLI_CFG_REQUEST_OLIST) */
|
---|
| 751 |
|
---|
| 752 | #if defined(DHCP4_CLI_CFG_REQUIRED_OLIST)
|
---|
| 753 |
|
---|
| 754 | /* å¿
|
---|
| 755 | é ãªãã·ã§ã³ãæ¤è¨¼ããã*/
|
---|
| 756 | for (ix = sizeof(required_plist); ix -- > 0; ) {
|
---|
| 757 | if (find_option(msg, required_plist[ix], 0) == NULL)
|
---|
| 758 | msg->prefer = 0;
|
---|
| 759 | }
|
---|
| 760 |
|
---|
| 761 | #endif /* of #if defined(DHCP4_CLI_CFG_REQUIRED_OLIST) */
|
---|
| 762 | }
|
---|
| 763 |
|
---|
| 764 | /*
|
---|
| 765 | * eval_rcv_msg -- åä¿¡ã¡ãã»ã¼ã¸ãè©ä¾¡ããã
|
---|
| 766 | */
|
---|
| 767 |
|
---|
| 768 | static ER
|
---|
| 769 | eval_rcv_msg (T_DHCP4_CLI_CONTEXT *ct)
|
---|
| 770 | {
|
---|
| 771 | T_DHCP4_CLI_MSG *evl, *msg;
|
---|
| 772 |
|
---|
| 773 | /* ã¡ãã»ã¼ã¸ãåä¿¡ãã¦ããªããã°ä¸æ¢ããã*/
|
---|
| 774 | syscall(wai_sem(SEM_DHCP4_CLI_LOCK));
|
---|
| 775 | if (ct->val_lst == NULL) {
|
---|
| 776 | syscall(sig_sem(SEM_DHCP4_CLI_LOCK));
|
---|
| 777 | return E_OK;
|
---|
| 778 | }
|
---|
| 779 |
|
---|
| 780 | /* æ¤è¨¼ã¡ãã»ã¼ã¸ãªã¹ãããè©ä¾¡ã¡ãã»ã¼ã¸ãåãåºãã*/
|
---|
| 781 | evl = ct->val_lst;
|
---|
| 782 | ct->val_lst = ct->val_lst->next;
|
---|
| 783 | evl->next = NULL;
|
---|
| 784 | syscall(sig_sem(SEM_DHCP4_CLI_LOCK));
|
---|
| 785 |
|
---|
| 786 | /* è©ä¾¡ã¡ãã»ã¼ã¸ãæ¤è¨¼ããã*/
|
---|
| 787 | if (validate_rcv_msg(ct, evl) != E_OK) {
|
---|
| 788 |
|
---|
| 789 | /* ã¨ã©ã¼ãçºçããè©ä¾¡ã¡ãã»ã¼ã¸ãåä¿¡ã¡ãã»ã¼ã¸æ§é ä½ãªã¹ãã«æ»ãã*/
|
---|
| 790 | goto rcv_ret;
|
---|
| 791 | }
|
---|
| 792 |
|
---|
| 793 | /* åä¿¡ããã¡ãã»ã¼ã¸ã NAK ã®æã®å¦ç */
|
---|
| 794 | if (evl->type == DHCP4_MTYPE_NAK) {
|
---|
| 795 |
|
---|
| 796 | /* ãªã¼ã¹ãããæ
|
---|
| 797 | å ±ã解æ¾ããã*/
|
---|
| 798 | rel_lease(ct);
|
---|
| 799 |
|
---|
| 800 | /* å
|
---|
| 801 | é¨ã¨ã©ã¼ãè¨å®ãã¦çµäºããã*/
|
---|
| 802 | return E_PAR;
|
---|
| 803 | }
|
---|
| 804 |
|
---|
| 805 | /* REL_INFO ç¶æ
|
---|
| 806 | ã®æã®å¦ç */
|
---|
| 807 | //cons_printf(CONSOLE_PORTID, "evl_rcv_msg3[s=%d]\n", ct->fsm);
|
---|
| 808 | if (ct->fsm == DHCP4_FSM_REL_INFO) {
|
---|
| 809 | syscall(wai_sem(SEM_DHCP4_CLI_LOCK));
|
---|
| 810 | evl->next = ct->prf_lst;
|
---|
| 811 | ct->prf_lst = evl;
|
---|
| 812 | syscall(sig_sem(SEM_DHCP4_CLI_LOCK));
|
---|
| 813 | return E_OK;
|
---|
| 814 | }
|
---|
| 815 |
|
---|
| 816 | /* è©ä¾¡ã¡ãã»ã¼ã¸ã®æ¨å¥¨åº¦ãè©ä¾¡ããã*/
|
---|
| 817 | eval_prefer(evl);
|
---|
| 818 |
|
---|
| 819 | /* æ¨å¥¨ã¡ãã»ã¼ã¸ãªã¹ãã空ãªãè©ä¾¡ã¡ãã»ã¼ã¸ã移ãã¦çµäºããã*/
|
---|
| 820 | if (ct->prf_lst == NULL) {
|
---|
| 821 | ct->max_prefer = evl->prefer;
|
---|
| 822 | ct->prf_lst = evl;
|
---|
| 823 | return E_OK;
|
---|
| 824 | }
|
---|
| 825 |
|
---|
| 826 | /* è©ä¾¡ã¡ãã»ã¼ã¸ã®æ¨å¥¨åº¦ã¨æ¨å¥¨ã¡ãã»ã¼ã¸ãªã¹ãã®æ大æ¨å¥¨åº¦ãæ¯è¼ããã*/
|
---|
| 827 | if (evl->prefer > ct->max_prefer) {
|
---|
| 828 |
|
---|
| 829 | /*
|
---|
| 830 | * è©ä¾¡ã¡ãã»ã¼ã¸ã®æ¨å¥¨åº¦ãæ¨å¥¨ã¡ãã»ã¼ã¸ãªã¹ãã®æ大æ¨å¥¨åº¦ããé«ããã°ã
|
---|
| 831 | * æ¨å¥¨ã¡ãã»ã¼ã¸ãªã¹ããåä¿¡ã¡ãã»ã¼ã¸æ§é ä½ãªã¹ãã«æ»ãã
|
---|
| 832 | * è©ä¾¡ã¡ãã»ã¼ã¸ãæ¨å¥¨ã¡ãã»ã¼ã¸ãªã¹ãã«ç§»ãã
|
---|
| 833 | */
|
---|
| 834 | ct->max_prefer = evl->prefer;
|
---|
| 835 | syscall(wai_sem(SEM_DHCP4_CLI_LOCK));
|
---|
| 836 | if (ct->rcv_lst == NULL)
|
---|
| 837 | ct->rcv_lst = ct->prf_lst;
|
---|
| 838 | else {
|
---|
| 839 | for (msg = ct->rcv_lst; msg->next != NULL; msg = msg->next)
|
---|
| 840 | ;
|
---|
| 841 | msg->next = ct->prf_lst;
|
---|
| 842 | }
|
---|
| 843 | syscall(sig_sem(SEM_DHCP4_CLI_LOCK));
|
---|
| 844 | ct->prf_lst = evl;
|
---|
| 845 | return E_OK;
|
---|
| 846 | }
|
---|
| 847 |
|
---|
| 848 | else if (evl->prefer == ct->max_prefer) {
|
---|
| 849 | for (msg = ct->prf_lst; msg != NULL; msg = msg->next) {
|
---|
| 850 | if (is_equal_sid(evl, msg)) {
|
---|
| 851 |
|
---|
| 852 | /*
|
---|
| 853 | * æ¨å¥¨ã¡ãã»ã¼ã¸ãªã¹ãã«åã DHCP4_OPT_SERVER_ID ã®ã¡ãã»ã¼ã¸ãããã°ã
|
---|
| 854 | * è©ä¾¡ã¡ãã»ã¼ã¸ãåä¿¡ã¡ãã»ã¼ã¸æ§é ä½ãªã¹ãã«æ»ãã
|
---|
| 855 | */
|
---|
| 856 | goto rcv_ret;
|
---|
| 857 | }
|
---|
| 858 | }
|
---|
| 859 |
|
---|
| 860 | /*
|
---|
| 861 | * è©ä¾¡ã¡ãã»ã¼ã¸ãæ¨å¥¨ã¡ãã»ã¼ã¸ãªã¹ãã«ç§»ãã
|
---|
| 862 | */
|
---|
| 863 | evl->next = ct->prf_lst;
|
---|
| 864 | ct->prf_lst = evl;
|
---|
| 865 | return E_OK;
|
---|
| 866 | }
|
---|
| 867 |
|
---|
| 868 | /*else */
|
---|
| 869 | /*
|
---|
| 870 | * è©ä¾¡ã¡ãã»ã¼ã¸ã®æ¨å¥¨åº¦ãæ¨å¥¨ã¡ãã»ã¼ã¸ãªã¹ãã®æ大æ¨å¥¨åº¦ããä½ããã°ã
|
---|
| 871 | * è©ä¾¡ã¡ãã»ã¼ã¸ãåä¿¡ã¡ãã»ã¼ã¸æ§é ä½ãªã¹ãã«æ»ãã
|
---|
| 872 | */
|
---|
| 873 |
|
---|
| 874 | rcv_ret:
|
---|
| 875 | syscall(wai_sem(SEM_DHCP4_CLI_LOCK));
|
---|
| 876 | evl->next = ct->rcv_lst;
|
---|
| 877 | ct->rcv_lst = evl;
|
---|
| 878 | syscall(sig_sem(SEM_DHCP4_CLI_LOCK));
|
---|
| 879 | return E_OK;
|
---|
| 880 | }
|
---|
| 881 |
|
---|
| 882 | /*
|
---|
| 883 | * select_msg -- æ¨å¥¨ã¡ãã»ã¼ã¸ãé¸æããã
|
---|
| 884 | */
|
---|
| 885 |
|
---|
| 886 | static T_DHCP4_CLI_MSG*
|
---|
| 887 | select_msg (T_DHCP4_CLI_CONTEXT *ct)
|
---|
| 888 | {
|
---|
| 889 | T_DHCP4_CLI_MSG *msg, *select;
|
---|
| 890 |
|
---|
| 891 | syscall(wai_sem(SEM_DHCP4_CLI_LOCK));
|
---|
| 892 | if (ct->prf_lst == NULL) {
|
---|
| 893 | /* ã¡ãã»ã¼ã¸ãåä¿¡ãã¦ããªããã°ä¸æ¢ããã*/
|
---|
| 894 | syscall(sig_sem(SEM_DHCP4_CLI_LOCK));
|
---|
| 895 | return NULL;
|
---|
| 896 | }
|
---|
| 897 |
|
---|
| 898 | /* æ¨å¥¨ã¡ãã»ã¼ã¸ãªã¹ãã®å
|
---|
| 899 | é ã®ã¡ãã»ã¼ã¸ãé¸æããã*/
|
---|
| 900 | select = ct->prf_lst;
|
---|
| 901 | ct->prf_lst = ct->prf_lst->next;
|
---|
| 902 | select->next = NULL;
|
---|
| 903 |
|
---|
| 904 | /* é¸æãããªãã£ãæ¤è¨¼ã¡ãã»ã¼ã¸ãåä¿¡ã¡ãã»ã¼ã¸æ§é ä½ãªã¹ãã«æ»ãã*/
|
---|
| 905 | if (ct->rcv_lst == NULL)
|
---|
| 906 | ct->rcv_lst = ct->prf_lst;
|
---|
| 907 | else {
|
---|
| 908 | for (msg = ct->rcv_lst; msg->next != NULL; msg = msg->next)
|
---|
| 909 | ;
|
---|
| 910 | msg->next = ct->prf_lst;
|
---|
| 911 | }
|
---|
| 912 | syscall(sig_sem(SEM_DHCP4_CLI_LOCK));
|
---|
| 913 | return select;
|
---|
| 914 | }
|
---|
| 915 |
|
---|
| 916 | /*
|
---|
| 917 | * select_ack -- ACK ã¡ãã»ã¼ã¸ãæ¤è¨¼ããã
|
---|
| 918 | *
|
---|
| 919 | * åãå
|
---|
| 920 | ¥ãããã¨ãå¯è½ã®æ㯠true ãè¿ãã
|
---|
| 921 | */
|
---|
| 922 |
|
---|
| 923 | static bool_t
|
---|
| 924 | select_ack (T_DHCP4_CLI_CONTEXT *ct)
|
---|
| 925 | {
|
---|
| 926 | T_DHCP4_CLI_MSG *msg;
|
---|
| 927 |
|
---|
| 928 | if ((msg = select_msg(ct)) == NULL)
|
---|
| 929 | return false;
|
---|
| 930 |
|
---|
| 931 | /* æå¹ãªãªã¼ã¹ã»ã¡ãã»ã¼ã¸ãæ®ã£ã¦ããã°ãåä¿¡ã¡ãã»ã¼ã¸æ§é ä½ãªã¹ãã«æ»ãã*/
|
---|
| 932 | if (ct->act_msg != NULL) {
|
---|
| 933 | syscall(wai_sem(SEM_DHCP4_CLI_LOCK));
|
---|
| 934 | ct->act_msg->next = ct->rcv_lst;
|
---|
| 935 | ct->rcv_lst = ct->act_msg;
|
---|
| 936 | syscall(sig_sem(SEM_DHCP4_CLI_LOCK));
|
---|
| 937 | }
|
---|
| 938 |
|
---|
| 939 | /* æå¹ãªãªã¼ã¹ã»ã¡ãã»ã¼ã¸ã«è¨å®ããã*/
|
---|
| 940 | ct->act_msg = msg;
|
---|
| 941 | return true;
|
---|
| 942 | }
|
---|
| 943 |
|
---|
| 944 | /*
|
---|
| 945 | * select_offer -- OFFER ã¡ãã»ã¼ã¸ãæ¤è¨¼ããã
|
---|
| 946 | *
|
---|
| 947 | * åãå
|
---|
| 948 | ¥ãããã¨ãå¯è½ã®æ㯠true ãè¿ãã
|
---|
| 949 | */
|
---|
| 950 |
|
---|
| 951 | static bool_t
|
---|
| 952 | select_offer (T_DHCP4_CLI_CONTEXT *ct)
|
---|
| 953 | {
|
---|
| 954 | return (ct->off_msg = select_msg(ct)) != NULL;
|
---|
| 955 | }
|
---|
| 956 |
|
---|
| 957 | /*
|
---|
| 958 | * cancel_all_timers -- å
|
---|
| 959 | ¨ã¦ã® TIMER ããã£ã³ã»ã«ããã
|
---|
| 960 | */
|
---|
| 961 |
|
---|
| 962 | static void
|
---|
| 963 | cancel_all_timers (T_DHCP4_CLI_CONTEXT *ct)
|
---|
| 964 | {
|
---|
| 965 | int ix;
|
---|
| 966 |
|
---|
| 967 | DHCP4_CLI_TIMER_LOCK();
|
---|
| 968 | for (ix = NUM_DHCP4C_TIMERS; ix -- > 0; )
|
---|
| 969 | ct->timers[ix] = 0;
|
---|
| 970 | DHCP4_CLI_TIMER_UNLOCK();
|
---|
| 971 | }
|
---|
| 972 |
|
---|
| 973 |
|
---|
| 974 | /*
|
---|
| 975 | * start_select -- DISCOVER ã¡ãã»ã¼ã¸ãéä¿¡ã㦠SELECT ç¶æ
|
---|
| 976 | ã«é·ç§»ããã
|
---|
| 977 | */
|
---|
| 978 |
|
---|
| 979 | static void
|
---|
| 980 | start_select (T_DHCP4_CLI_CONTEXT *ct)
|
---|
| 981 | {
|
---|
| 982 | /* éä¿¡ãéå§ããæéãè¨é²ããã*/
|
---|
| 983 | get_tim(&ct->snd_start);
|
---|
| 984 |
|
---|
| 985 | /* OFFER ã¡ãã»ã¼ã¸åä¿¡ã¿ã¤ã ã¢ã¦ããè¨å®ããã*/
|
---|
| 986 | DHCP4_CLI_TIMER_LOCK();
|
---|
| 987 | ct->timers[DHCP4C_TIMER_RCV_OFFER] = SYSTIM2TIMER(TMO_DHCP4C_OFFER);
|
---|
| 988 | DHCP4_CLI_TIMER_UNLOCK();
|
---|
| 989 |
|
---|
| 990 | /* éä¿¡å
|
---|
| 991 | ã¢ãã¬ã¹ã«ãã¼ã«ã«ãããã¯ã¼ã¯ã¸ã®ããã¼ããã£ã¹ããè¨å®ããã*/
|
---|
| 992 | ct->dst.ipaddr = IPV4_ADDRBROADCAST;
|
---|
| 993 |
|
---|
| 994 | /* éä¿¡ééããªã»ããããã*/
|
---|
| 995 | ct->interval = 0;
|
---|
| 996 |
|
---|
| 997 | /* SELECT ç¶æ
|
---|
| 998 | ã«é·ç§»ããã*/
|
---|
| 999 | ct->fsm = DHCP4_FSM_SELECT;
|
---|
| 1000 |
|
---|
| 1001 | /* DISCOVER ã¡ãã»ã¼ã¸ãéä¿¡ããã*/
|
---|
| 1002 | ct->flags |= DHCP4C_FLAG_TMOUT_SND_DISC;
|
---|
| 1003 | DHCP4_CLI_READY_SIGNAL(ct);
|
---|
| 1004 | }
|
---|
| 1005 |
|
---|
| 1006 | /*
|
---|
| 1007 | * start_bound -- BOUND ç¶æ
|
---|
| 1008 | ã«é·ç§»ããã
|
---|
| 1009 | */
|
---|
| 1010 |
|
---|
| 1011 | static void
|
---|
| 1012 | start_bound (T_DHCP4_CLI_CONTEXT *ct)
|
---|
| 1013 | {
|
---|
| 1014 | /* ãªã¼ã¹ãããæ
|
---|
| 1015 | å ±ãè¨å®ããã*/
|
---|
| 1016 | set_lease(ct);
|
---|
| 1017 |
|
---|
| 1018 | /* ãªã¼ã¹ã®æå¹æéãè¨å®ããã*/
|
---|
| 1019 | ct->expire = timer_value(ct->act_msg, DHCP4_OPT_LEASE_TIME, TMO_DHCP4C_DEF_LEASE);
|
---|
| 1020 |
|
---|
| 1021 | /* ãªã¼ã¹æéã TMO_DHCP4C_MIN_LEASE 以ä¸ã®æã¯ãTMO_DHCP4C_MIN_LEASE ã«è¨å®ããã*/
|
---|
| 1022 | if (ct->expire < TMO_DHCP4C_MIN_LEASE)
|
---|
| 1023 | ct->expire = TMO_DHCP4C_MIN_LEASE;
|
---|
| 1024 |
|
---|
| 1025 | /* RENEW ç¶æ
|
---|
| 1026 | ã¾ã§ã®æéãè¨å®ããã*/
|
---|
| 1027 | ct->renew = timer_value(ct->act_msg, DHCP4_OPT_RENEWAL_T1, ct->expire / 2);
|
---|
| 1028 |
|
---|
| 1029 | /* REBIND ç¶æ
|
---|
| 1030 | ã¾ã§ã®æéãè¨å®ããã*/
|
---|
| 1031 | ct->rebind = timer_value(ct->act_msg, DHCP4_OPT_REBINDING_T2, ct->renew + ct->renew / 2 + ct->renew / 4);
|
---|
| 1032 |
|
---|
| 1033 | /* EXPIREãRENEWãREBIND ã¿ã¤ãã¼ãè¨å®ããã*/
|
---|
| 1034 | DHCP4_CLI_TIMER_LOCK();
|
---|
| 1035 | ct->timers[DHCP4C_TIMER_EXPIRE] = SYSTIM2TIMER(ct->expire); /* EXPIRE ã¾ã§ã®æé */
|
---|
| 1036 | ct->timers[DHCP4C_TIMER_REBIND] = SYSTIM2TIMER(ct->rebind); /* REBINDï¼T2ï¼ã¾ã§ã®æé */
|
---|
| 1037 | ct->timers[DHCP4C_TIMER_RENEW] = SYSTIM2TIMER(ct->renew); /* RENEW ï¼T1ï¼ã¾ã§ã®æé */
|
---|
| 1038 | DHCP4_CLI_TIMER_UNLOCK();
|
---|
| 1039 |
|
---|
| 1040 | /* BOUND ç¶æ
|
---|
| 1041 | ã«é·ç§»ããã*/
|
---|
| 1042 | ct->fsm = DHCP4_FSM_BOUND;
|
---|
| 1043 |
|
---|
| 1044 | /* BIND ãéå§ããæéãè¨é²ããã*/
|
---|
| 1045 | get_tim(&ct->bind_start);
|
---|
| 1046 | }
|
---|
| 1047 |
|
---|
| 1048 | /*
|
---|
| 1049 | * start_send_request -- REQUEST ã¡ãã»ã¼ã¸ãéä¿¡ãã¦ãæå®ãããç¶æ
|
---|
| 1050 | ã«é·ç§»ããã
|
---|
| 1051 | */
|
---|
| 1052 |
|
---|
| 1053 | static void
|
---|
| 1054 | start_send_request (T_DHCP4_CLI_CONTEXT *ct, uint_t fsm)
|
---|
| 1055 | {
|
---|
| 1056 | T_IFNET *ifp = IF_GET_IFNET();
|
---|
| 1057 |
|
---|
| 1058 | /* éä¿¡ãéå§ããæéãè¨é²ããã*/
|
---|
| 1059 | get_tim(&ct->snd_start);
|
---|
| 1060 |
|
---|
| 1061 | /* é·ç§»ããç¶æ
|
---|
| 1062 | ã RENEW 以å¤ã§ã¯ ACK/NAK ã¡ãã»ã¼ã¸åä¿¡ã¿ã¤ã ã¢ã¦ããè¨å®ããã*/
|
---|
| 1063 | if (fsm != DHCP4_FSM_RENEW) {
|
---|
| 1064 | DHCP4_CLI_TIMER_LOCK();
|
---|
| 1065 | ct->timers[DHCP4C_TIMER_RCV_ACK] = SYSTIM2TIMER(TMO_DHCP4C_ACK);
|
---|
| 1066 | DHCP4_CLI_TIMER_UNLOCK();
|
---|
| 1067 | }
|
---|
| 1068 |
|
---|
| 1069 | /*
|
---|
| 1070 | * é·ç§»ããç¶æ
|
---|
| 1071 | ã RENEW ã§ã
|
---|
| 1072 | * SERVER ID ãªãã·ã§ã³ãããã°ãã¼ã«ã«ãããã¯ã¼ã¯ã¸ã®ããã¼ããã£ã¹ããéä¿¡ããã
|
---|
| 1073 | */
|
---|
| 1074 | if ((fsm == DHCP4_FSM_RENEW) &&
|
---|
| 1075 | (find_option(ct->act_msg, DHCP4_OPT_SERVER_ID, sizeof(T_IN4_ADDR)) != NULL))
|
---|
| 1076 | ct->dst.ipaddr = (ifp->in4_ifaddr.addr & ifp->in4_ifaddr.mask) | ~ifp->in4_ifaddr.mask;
|
---|
| 1077 | else
|
---|
| 1078 | ct->dst.ipaddr = IPV4_ADDRBROADCAST;
|
---|
| 1079 |
|
---|
| 1080 | /* éä¿¡ééããªã»ããããã*/
|
---|
| 1081 | ct->interval = 0;
|
---|
| 1082 |
|
---|
| 1083 | /* æå®ãããç¶æ
|
---|
| 1084 | ã«é·ç§»ããã*/
|
---|
| 1085 | ct->fsm = fsm;
|
---|
| 1086 |
|
---|
| 1087 | /* REQUEST ã¡ãã»ã¼ã¸ãéä¿¡ããã*/
|
---|
| 1088 | ct->flags |= DHCP4C_FLAG_TMOUT_SND_REQ;
|
---|
| 1089 | DHCP4_CLI_READY_SIGNAL(ct);
|
---|
| 1090 | }
|
---|
| 1091 |
|
---|
| 1092 | /*
|
---|
| 1093 | * start_rel_info -- ã¢ãã¬ã¹æ
|
---|
| 1094 | å ±ã解æ¾ããã
|
---|
| 1095 | *
|
---|
| 1096 | * 注æ: DHCPv4 ã® RFC2131 ã«ã¯ç¡ã
|
---|
| 1097 | */
|
---|
| 1098 |
|
---|
| 1099 | static void
|
---|
| 1100 | start_rel_info (T_DHCP4_CLI_CONTEXT *ct)
|
---|
| 1101 | {
|
---|
| 1102 | /* å
|
---|
| 1103 | ¨ã¦ã® TIMER ããã£ã³ã»ã«ããã*/
|
---|
| 1104 | cancel_all_timers(ct);
|
---|
| 1105 |
|
---|
| 1106 | /* æå¹ãªãªã¼ã¹æ
|
---|
| 1107 | å ±ãç¡ããã° SLEEP ã«é·ç§»ããã*/
|
---|
| 1108 | if (ct->act_msg == NULL) {
|
---|
| 1109 | ct->fsm = DHCP4_FSM_SLEEP;
|
---|
| 1110 | return;
|
---|
| 1111 | }
|
---|
| 1112 |
|
---|
| 1113 | /* éä¿¡å
|
---|
| 1114 | ã¢ãã¬ã¹ã«ãã¼ã«ã«ãããã¯ã¼ã¯ã¸ã®ããã¼ããã£ã¹ããè¨å®ããã*/
|
---|
| 1115 | ct->dst.ipaddr = IPV4_ADDRBROADCAST;
|
---|
| 1116 |
|
---|
| 1117 | /* RELEASE ã¡ãã»ã¼ã¸ãéä¿¡ããã*/
|
---|
| 1118 | ct->flags |= DHCP4C_FLAG_TMOUT_SND_REL;
|
---|
| 1119 | DHCP4_CLI_READY_SIGNAL(ct);
|
---|
| 1120 | }
|
---|
| 1121 |
|
---|
| 1122 | /*
|
---|
| 1123 | * setup_dhcp_com_msg -- DHCP ã¡ãã»ã¼ã¸ã®å
|
---|
| 1124 | ±éé¨åãä½æããã
|
---|
| 1125 | */
|
---|
| 1126 |
|
---|
| 1127 | static uint8_t *
|
---|
| 1128 | setup_dhcp_com_msg (T_DHCP4_CLI_CONTEXT *ct, uint_t op, uint_t type)
|
---|
| 1129 | {
|
---|
| 1130 | uint8_t *option;
|
---|
| 1131 |
|
---|
| 1132 | memset((void*)&ct->snd_msg->msg, 0, sizeof(ct->snd_msg->msg));
|
---|
| 1133 | ct->snd_msg->len = sizeof(ct->snd_msg->msg);
|
---|
| 1134 |
|
---|
| 1135 | /* ãããé¨ãè¨å®ããã*/
|
---|
| 1136 | ct->snd_msg->msg.op = op;
|
---|
| 1137 | ct->snd_msg->msg.htype = DHCP4_HWA_TYPE_ETHER;
|
---|
| 1138 | ct->snd_msg->msg.hlen = ETHER_ADDR_LEN;
|
---|
| 1139 | HOST2MSG32(ct->snd_msg->msg.xid, ct->xid);
|
---|
| 1140 |
|
---|
| 1141 | /* MAC ã¢ãã¬ã¹ãè¨å®ããã*/
|
---|
| 1142 | memcpy(&ct->snd_msg->msg.chaddr, &ct->sc->ifaddr.lladdr, ETHER_ADDR_LEN);
|
---|
| 1143 |
|
---|
| 1144 | /*
|
---|
| 1145 | * ãªãã·ã§ã³é¨ãè¨å®ããã
|
---|
| 1146 | */
|
---|
| 1147 |
|
---|
| 1148 | /* RFC1048 ã«å®ç¾©ããã¦ãããã¸ãã¯çªå·ãè¨å®ããã*/
|
---|
| 1149 | memcpy(&ct->snd_msg->msg.options, magicno, DHCP4_MAGIC_LEN);
|
---|
| 1150 | option = ct->snd_msg->msg.options + DHCP4_MAGIC_LEN;
|
---|
| 1151 |
|
---|
| 1152 | /* DHCP ã¡ãã»ã¼ã¸ã¿ã¤ããè¨å®ããã*/
|
---|
| 1153 | *(option ++) = DHCP4_OPT_MSG_TYPE;
|
---|
| 1154 | *(option ++) = 1;
|
---|
| 1155 | *(option ++) = type;
|
---|
| 1156 |
|
---|
| 1157 | return option;
|
---|
| 1158 | }
|
---|
| 1159 |
|
---|
| 1160 | /*
|
---|
| 1161 | * setup_release_msg -- RELEASE ã¡ãã»ã¼ã¸ãä½æããã
|
---|
| 1162 | */
|
---|
| 1163 |
|
---|
| 1164 | static ER
|
---|
| 1165 | setup_release_msg (T_DHCP4_CLI_CONTEXT *ct, T_DHCP4_CLI_MSG *ref)
|
---|
| 1166 | {
|
---|
| 1167 | uint8_t *opt, *ref_opt;
|
---|
| 1168 |
|
---|
| 1169 | /* æå¹ãªãªã¼ã¹ã»ã¡ãã»ã¼ã¸ããªããã°ã¨ã©ã¼ */
|
---|
| 1170 | if (ref == NULL)
|
---|
| 1171 | return E_PAR;
|
---|
| 1172 |
|
---|
| 1173 | ct->xid = create_xid();
|
---|
| 1174 | if ((opt = setup_dhcp_com_msg(ct, DHCP4_REQUEST, DHCP4_MTYPE_RELEASE)) == NULL)
|
---|
| 1175 | return E_PAR;
|
---|
| 1176 |
|
---|
| 1177 | /*
|
---|
| 1178 | * ãµã¼ã IDï¼server-ipï¼ãè¨å®ããã
|
---|
| 1179 | * RFC2131 4.4.1 Initialization and allocation of network address åç
|
---|
| 1180 | §
|
---|
| 1181 | */
|
---|
| 1182 | if ((ref_opt = find_option(ref, DHCP4_OPT_SERVER_ID, sizeof(T_IN4_ADDR))) == NULL)
|
---|
| 1183 | return E_PAR;
|
---|
| 1184 | *(opt ++) = *(ref_opt ++);
|
---|
| 1185 | *(opt ++) = *(ref_opt ++);
|
---|
| 1186 | memcpy(opt, ref_opt, *(ref_opt - 1));
|
---|
| 1187 | opt += *(ref_opt - 1);
|
---|
| 1188 |
|
---|
| 1189 | /*
|
---|
| 1190 | * ã¯ã©ã¤ã¢ã³ã IDï¼MAC ã¢ãã¬ã¹ï¼ãè¨å®ããã
|
---|
| 1191 | * RFC2131 4.4.1 Initialization and allocation of network address åç
|
---|
| 1192 | §
|
---|
| 1193 | */
|
---|
| 1194 | *(opt ++) = DHCP4_OPT_CLIENT_ID;
|
---|
| 1195 | *(opt ++) = ETHER_ADDR_LEN + 1;
|
---|
| 1196 | *(opt ++) = DHCP4_HWA_TYPE_ETHER;
|
---|
| 1197 | memcpy(opt, &ct->sc->ifaddr.lladdr, ETHER_ADDR_LEN);
|
---|
| 1198 | opt += ETHER_ADDR_LEN;
|
---|
| 1199 |
|
---|
| 1200 | /* ãªãã·ã§ã³ã®çµäºãè¨å®ããã*/
|
---|
| 1201 | *(opt ++) = DHCP4_OPT_END;
|
---|
| 1202 |
|
---|
| 1203 | /*
|
---|
| 1204 | * ã¯ã©ã¤ã¢ã³ã IP ã¢ãã¬ã¹ï¼ciaddrï¼ãè¨å®ããã
|
---|
| 1205 | * RFC2131 4.4.1 Initialization and allocation of network address åç
|
---|
| 1206 | §
|
---|
| 1207 | */
|
---|
| 1208 | HOST2MSG32(ct->snd_msg->msg.ciaddr, IF_GET_IFNET()->in4_ifaddr.addr);
|
---|
| 1209 |
|
---|
| 1210 | /* ã¡ãã»ã¼ã¸é·ãè¨å®ããã*/
|
---|
| 1211 | ct->snd_msg->len = sizeof(ct->snd_msg->msg) - DHCP4_DFLT_OPT_LEN
|
---|
| 1212 | + (opt - (uint8_t*)&ct->snd_msg->msg.options);
|
---|
| 1213 | return E_OK;
|
---|
| 1214 | }
|
---|
| 1215 |
|
---|
| 1216 |
|
---|
| 1217 | /*
|
---|
| 1218 | * setup_request_msg -- REQUEST ã¡ãã»ã¼ã¸ãä½æããã
|
---|
| 1219 | */
|
---|
| 1220 |
|
---|
| 1221 | static ER
|
---|
| 1222 | setup_request_msg (T_DHCP4_CLI_CONTEXT *ct, T_DHCP4_CLI_MSG *ref)
|
---|
| 1223 | {
|
---|
| 1224 | uint8_t *opt, *ref_opt;
|
---|
| 1225 |
|
---|
| 1226 | #if defined(DHCP4_CLI_CFG_REQUIRED_OLIST) || defined(DHCP4_CLI_CFG_REQUEST_OLIST)
|
---|
| 1227 | uint_t len = 0;
|
---|
| 1228 | #endif
|
---|
| 1229 |
|
---|
| 1230 | /* åç
|
---|
| 1231 | §ããã¡ãã»ã¼ã¸ããªããã°ã¨ã©ã¼ */
|
---|
| 1232 | if (ref == NULL)
|
---|
| 1233 | return E_PAR;
|
---|
| 1234 |
|
---|
| 1235 | ct->xid = create_xid();
|
---|
| 1236 | if ((opt = setup_dhcp_com_msg(ct, DHCP4_REQUEST, DHCP4_MTYPE_REQUEST)) == NULL)
|
---|
| 1237 | return E_PAR;
|
---|
| 1238 |
|
---|
| 1239 | #if defined(DHCP4_CLI_CFG_REQUIRED_OLIST) || defined(DHCP4_CLI_CFG_REQUEST_OLIST)
|
---|
| 1240 |
|
---|
| 1241 | /* 追å ã®ãªãã·ã§ã³ãè¨å®ããã*/
|
---|
| 1242 |
|
---|
| 1243 | *opt = DHCP4_OPT_REQ_PARAM;
|
---|
| 1244 | opt += 2;
|
---|
| 1245 |
|
---|
| 1246 | #if defined(DHCP4_CLI_CFG_REQUIRED_OLIST)
|
---|
| 1247 |
|
---|
| 1248 | /* è¦æ±ãªãã·ã§ã³ãªã¹ããè¨å®ããã*/
|
---|
| 1249 | if (sizeof(required_plist) > 0) {
|
---|
| 1250 | memcpy(opt, required_plist, sizeof(required_plist));
|
---|
| 1251 | opt += sizeof(required_plist);
|
---|
| 1252 | len += sizeof(required_plist);
|
---|
| 1253 | }
|
---|
| 1254 |
|
---|
| 1255 | #endif /* of #if defined(DHCP4_CLI_CFG_REQUIRED_OLIST) */
|
---|
| 1256 |
|
---|
| 1257 | #if defined(DHCP4_CLI_CFG_REQUEST_OLIST)
|
---|
| 1258 |
|
---|
| 1259 | /* è¦æ±ãªãã·ã§ã³ãªã¹ããè¨å®ããã*/
|
---|
| 1260 | if (sizeof(request_plist) > 0) {
|
---|
| 1261 | memcpy(opt, request_plist, sizeof(request_plist));
|
---|
| 1262 | opt += sizeof(request_plist);
|
---|
| 1263 | len += sizeof(request_plist);
|
---|
| 1264 | }
|
---|
| 1265 |
|
---|
| 1266 | #endif /* of #if defined(DHCP4_CLI_CFG_REQUEST_OLIST) */
|
---|
| 1267 |
|
---|
| 1268 | *(opt - len - 1) = len;
|
---|
| 1269 |
|
---|
| 1270 | #endif /* of #if defined(DHCP4_CLI_CFG_REQUIRED_OLIST) || defined(DHCP4_CLI_CFG_REQUEST_OLIST) */
|
---|
| 1271 |
|
---|
| 1272 | /*
|
---|
| 1273 | * ãµã¼ã IDï¼server-ipï¼ãè¨å®ããã
|
---|
| 1274 | * RFC2131 4.4.1 Initialization and allocation of network address åç
|
---|
| 1275 | §
|
---|
| 1276 | */
|
---|
| 1277 | if (ct->fsm == DHCP4_FSM_REQUEST) {
|
---|
| 1278 | if ((ref_opt = find_option(ref, DHCP4_OPT_SERVER_ID, sizeof(T_IN4_ADDR))) == NULL)
|
---|
| 1279 | return E_PAR;
|
---|
| 1280 | *(opt ++) = *(ref_opt ++);
|
---|
| 1281 | *(opt ++) = *(ref_opt ++);
|
---|
| 1282 | memcpy(opt, ref_opt, *(ref_opt - 1));
|
---|
| 1283 | opt += *(ref_opt - 1);
|
---|
| 1284 | }
|
---|
| 1285 |
|
---|
| 1286 | /*
|
---|
| 1287 | * è¦æ± IP ã¢ãã¬ã¹ï¼requested-ipï¼ãè¨å®ããã
|
---|
| 1288 | * RFC2131 4.4.1 Initialization and allocation of network address åç
|
---|
| 1289 | §
|
---|
| 1290 | * RFC2131 ã§ã¯ãDHCP4_FSM_RENEW ã®æ MUST NOT ã«ãªã£ã¦ãããã
|
---|
| 1291 | * MUST ã®ããã§ããã
|
---|
| 1292 | */
|
---|
| 1293 | *(opt ++) = DHCP4_OPT_REQ_IPV4;
|
---|
| 1294 | *(opt ++) = sizeof(ref->msg.yiaddr);
|
---|
| 1295 | if (ct->fsm == DHCP4_FSM_REQUEST || ct->fsm == DHCP4_FSM_INIT_REBOOT ||
|
---|
| 1296 | ct->fsm == DHCP4_FSM_RENEW || ct->fsm == DHCP4_FSM_REBIND)
|
---|
| 1297 | /* åç
|
---|
| 1298 | §ã¡ãã»ã¼ã¸ã¨åã IP ã¢ãã¬ã¹ï¼requested-ipï¼ãè¦æ±ããã*/
|
---|
| 1299 | memcpy(opt, (uint8_t*)&ref->msg.yiaddr, sizeof(ref->msg.yiaddr));
|
---|
| 1300 | else
|
---|
| 1301 | host2msg32(opt, IPV4_ADDRANY);
|
---|
| 1302 | opt += sizeof(ref->msg.yiaddr);
|
---|
| 1303 |
|
---|
| 1304 | /*
|
---|
| 1305 | * ã¯ã©ã¤ã¢ã³ã IDï¼MAC ã¢ãã¬ã¹ï¼ãè¨å®ããã
|
---|
| 1306 | * RFC2131 4.4.1 Initialization and allocation of network address åç
|
---|
| 1307 | §
|
---|
| 1308 | */
|
---|
| 1309 | *(opt ++) = DHCP4_OPT_CLIENT_ID;
|
---|
| 1310 | *(opt ++) = ETHER_ADDR_LEN + 1;
|
---|
| 1311 | *(opt ++) = DHCP4_HWA_TYPE_ETHER;
|
---|
| 1312 | memcpy(opt, &ct->sc->ifaddr.lladdr, ETHER_ADDR_LEN);
|
---|
| 1313 | opt += ETHER_ADDR_LEN;
|
---|
| 1314 |
|
---|
| 1315 | /* ãªãã·ã§ã³ã®çµäºãè¨å®ããã*/
|
---|
| 1316 | *(opt ++) = DHCP4_OPT_END;
|
---|
| 1317 |
|
---|
| 1318 | /*
|
---|
| 1319 | * ã¯ã©ã¤ã¢ã³ã IP ã¢ãã¬ã¹ï¼ciaddrï¼ãè¨å®ããã
|
---|
| 1320 | * RFC2131 4.4.1 Initialization and allocation of network address åç
|
---|
| 1321 | §
|
---|
| 1322 | */
|
---|
| 1323 | if (ct->fsm == DHCP4_FSM_RENEW || ct->fsm == DHCP4_FSM_REBIND)
|
---|
| 1324 | HOST2MSG32(ct->snd_msg->msg.ciaddr, IF_GET_IFNET()->in4_ifaddr.addr);
|
---|
| 1325 | else
|
---|
| 1326 | HOST2MSG32(ct->snd_msg->msg.ciaddr, IPV4_ADDRANY);
|
---|
| 1327 |
|
---|
| 1328 | /* ã¡ãã»ã¼ã¸é·ãè¨å®ããã*/
|
---|
| 1329 | ct->snd_msg->len = sizeof(ct->snd_msg->msg) - DHCP4_DFLT_OPT_LEN
|
---|
| 1330 | + (opt - (uint8_t*)&ct->snd_msg->msg.options);
|
---|
| 1331 | return E_OK;
|
---|
| 1332 | }
|
---|
| 1333 |
|
---|
| 1334 | /*
|
---|
| 1335 | * setup_discover_msg -- DISCOVER ã¡ãã»ã¼ã¸ãä½æããã
|
---|
| 1336 | */
|
---|
| 1337 |
|
---|
| 1338 | static ER
|
---|
| 1339 | setup_discover_msg (T_DHCP4_CLI_CONTEXT *ct)
|
---|
| 1340 | {
|
---|
| 1341 | uint8_t *opt;
|
---|
| 1342 |
|
---|
| 1343 | #if defined(DHCP4_CLI_CFG_REQUIRED_OLIST) || defined(DHCP4_CLI_CFG_REQUEST_OLIST)
|
---|
| 1344 | uint_t len = 0;
|
---|
| 1345 | #endif
|
---|
| 1346 |
|
---|
| 1347 | ct->xid = create_xid();
|
---|
| 1348 | if ((opt = setup_dhcp_com_msg(ct, DHCP4_REQUEST, DHCP4_MTYPE_DISCOVER)) == NULL)
|
---|
| 1349 | return E_PAR;
|
---|
| 1350 |
|
---|
| 1351 | #if defined(DHCP4_CLI_CFG_REQUIRED_OLIST) || defined(DHCP4_CLI_CFG_REQUEST_OLIST)
|
---|
| 1352 |
|
---|
| 1353 | /* 追å ã®ãªãã·ã§ã³ãè¨å®ããã*/
|
---|
| 1354 |
|
---|
| 1355 | *opt = DHCP4_OPT_REQ_PARAM;
|
---|
| 1356 | opt += 2;
|
---|
| 1357 |
|
---|
| 1358 | #if defined(DHCP4_CLI_CFG_REQUIRED_OLIST)
|
---|
| 1359 |
|
---|
| 1360 | /* è¦æ±ãªãã·ã§ã³ãªã¹ããè¨å®ããã*/
|
---|
| 1361 | if (sizeof(required_plist) > 0) {
|
---|
| 1362 | memcpy(opt, required_plist, sizeof(required_plist));
|
---|
| 1363 | opt += sizeof(required_plist);
|
---|
| 1364 | len += sizeof(required_plist);
|
---|
| 1365 | }
|
---|
| 1366 |
|
---|
| 1367 | #endif /* of #if defined(DHCP4_CLI_CFG_REQUIRED_OLIST) */
|
---|
| 1368 |
|
---|
| 1369 | #if defined(DHCP4_CLI_CFG_REQUEST_OLIST)
|
---|
| 1370 |
|
---|
| 1371 | /* è¦æ±ãªãã·ã§ã³ãªã¹ããè¨å®ããã*/
|
---|
| 1372 | if (sizeof(request_plist) > 0) {
|
---|
| 1373 | memcpy(opt, request_plist, sizeof(request_plist));
|
---|
| 1374 | opt += sizeof(request_plist);
|
---|
| 1375 | len += sizeof(request_plist);
|
---|
| 1376 | }
|
---|
| 1377 |
|
---|
| 1378 | #endif /* of #if defined(DHCP4_CLI_CFG_REQUEST_OLIST) */
|
---|
| 1379 |
|
---|
| 1380 | *(opt - len - 1) = len;
|
---|
| 1381 |
|
---|
| 1382 | #endif /* of #if defined(DHCP4_CLI_CFG_REQUIRED_OLIST) || defined(DHCP4_CLI_CFG_REQUEST_OLIST) */
|
---|
| 1383 |
|
---|
| 1384 | /* æ¢ã«ã¢ãã¬ã¹æ
|
---|
| 1385 | å ±ããªã¼ã¹ããã¦ããã°ãåã IP ã¢ãã¬ã¹ãè¦æ±ããã*/
|
---|
| 1386 | if (ct->act_msg != NULL) {
|
---|
| 1387 | *(opt ++) = DHCP4_OPT_REQ_IPV4;
|
---|
| 1388 | *(opt ++) = sizeof(ct->act_msg->msg.yiaddr);
|
---|
| 1389 | memcpy(opt, (uint8_t*)&ct->act_msg->msg.yiaddr, sizeof(ct->act_msg->msg.yiaddr));
|
---|
| 1390 | opt += sizeof(ct->act_msg->msg.yiaddr);
|
---|
| 1391 | }
|
---|
| 1392 |
|
---|
| 1393 | /* ã¯ã©ã¤ã¢ã³ã IDï¼MAC ã¢ãã¬ã¹ï¼ãè¨å®ããã*/
|
---|
| 1394 | *(opt ++) = DHCP4_OPT_CLIENT_ID;
|
---|
| 1395 | *(opt ++) = ETHER_ADDR_LEN + 1;
|
---|
| 1396 | *(opt ++) = DHCP4_HWA_TYPE_ETHER;
|
---|
| 1397 | memcpy(opt, &ct->sc->ifaddr.lladdr, ETHER_ADDR_LEN);
|
---|
| 1398 | opt += ETHER_ADDR_LEN;
|
---|
| 1399 |
|
---|
| 1400 | /* ãªãã·ã§ã³ã®çµäºãè¨å®ããã*/
|
---|
| 1401 | *(opt ++) = DHCP4_OPT_END;
|
---|
| 1402 |
|
---|
| 1403 | /* éä¿¡å
|
---|
| 1404 | ã¢ãã¬ã¹ãè¨å®ããã*/
|
---|
| 1405 | ct->dst.ipaddr = IPV4_ADDRBROADCAST;
|
---|
| 1406 |
|
---|
| 1407 | /* ã¡ãã»ã¼ã¸é·ãè¨å®ããã*/
|
---|
| 1408 | ct->snd_msg->len = sizeof(ct->snd_msg->msg) - DHCP4_DFLT_OPT_LEN
|
---|
| 1409 | + (opt - (uint8_t*)&ct->snd_msg->msg.options);
|
---|
| 1410 | return E_OK;
|
---|
| 1411 | }
|
---|
| 1412 |
|
---|
| 1413 | /*
|
---|
| 1414 | * ack_msg_timeout -- ACK/NAK ã¡ãã»ã¼ã¸åä¿¡ã¿ã¤ã ã¢ã¦ãå¦ç
|
---|
| 1415 | */
|
---|
| 1416 |
|
---|
| 1417 | static void
|
---|
| 1418 | ack_msg_timeout (T_DHCP4_CLI_CONTEXT *ct)
|
---|
| 1419 | {
|
---|
| 1420 | /* ACK ã¡ãã»ã¼ã¸ãåä¿¡ãã¦ããã°ãBOUND ç¶æ
|
---|
| 1421 | ã«é·ç§»ããã*/
|
---|
| 1422 | ct->flags &= ~DHCP4C_FLAG_TMOUT_MASK;
|
---|
| 1423 | if (select_ack(ct)) {
|
---|
| 1424 |
|
---|
| 1425 | /* REQUEST ã¡ãã»ã¼ã¸éä¿¡ã¿ã¤ãã¼ãåæ¢ããã*/
|
---|
| 1426 | DHCP4_CLI_TIMER_LOCK();
|
---|
| 1427 | ct->timers[DHCP4C_TIMER_SND_REQ] = 0;
|
---|
| 1428 | DHCP4_CLI_TIMER_UNLOCK();
|
---|
| 1429 |
|
---|
| 1430 | /*
|
---|
| 1431 | * ç¶æ
|
---|
| 1432 | ã REQUEST ã®æã¯ã
|
---|
| 1433 | * OFFER ã¡ãã»ã¼ã¸ãåä¿¡ã¡ãã»ã¼ã¸æ§é ä½ãªã¹ãã«æ»ãã
|
---|
| 1434 | */
|
---|
| 1435 | if (ct->fsm == DHCP4_FSM_REQUEST && ct->off_msg != NULL) {
|
---|
| 1436 | syscall(wai_sem(SEM_DHCP4_CLI_LOCK));
|
---|
| 1437 | ct->off_msg->next = ct->rcv_lst;
|
---|
| 1438 | ct->rcv_lst = ct->off_msg;
|
---|
| 1439 | syscall(sig_sem(SEM_DHCP4_CLI_LOCK));
|
---|
| 1440 | ct->off_msg = NULL;
|
---|
| 1441 | }
|
---|
| 1442 |
|
---|
| 1443 | /* BOUND ç¶æ
|
---|
| 1444 | ã«é·ç§»ããã*/
|
---|
| 1445 | start_bound(ct);
|
---|
| 1446 | return;
|
---|
| 1447 | }
|
---|
| 1448 | else {
|
---|
| 1449 |
|
---|
| 1450 | /* ãªã¼ã¹æ
|
---|
| 1451 | å ±ã解æ¾ããã*/
|
---|
| 1452 | rel_lease(ct);
|
---|
| 1453 |
|
---|
| 1454 | ct->error = E_TMOUT;
|
---|
| 1455 | }
|
---|
| 1456 | }
|
---|
| 1457 |
|
---|
| 1458 | /*
|
---|
| 1459 | * send_request_msg -- REQUEST ã¡ãã»ã¼ã¸ãéä¿¡ããã
|
---|
| 1460 | */
|
---|
| 1461 |
|
---|
| 1462 | static void
|
---|
| 1463 | send_request_msg (T_DHCP4_CLI_CONTEXT *ct)
|
---|
| 1464 | {
|
---|
| 1465 | T_DHCP4_CLI_MSG *ref;
|
---|
| 1466 | ER error;
|
---|
| 1467 | SYSTIM time;
|
---|
| 1468 | RELTIM interval;
|
---|
| 1469 | uint16_t secs;
|
---|
| 1470 |
|
---|
| 1471 | /* ã¿ã¤ã ã¢ã¦ããã©ã°ãã¯ãªã¢ã¼ããã*/
|
---|
| 1472 | ct->flags &= ~DHCP4C_FLAG_TMOUT_MASK;
|
---|
| 1473 |
|
---|
| 1474 | /* ACK ã¡ãã»ã¼ã¸ãåä¿¡ãã¦ããã°ãBOUND ç¶æ
|
---|
| 1475 | ã«é·ç§»ããã*/
|
---|
| 1476 | ct->flags &= ~DHCP4C_FLAG_TMOUT_MASK;
|
---|
| 1477 | if (select_ack(ct)) {
|
---|
| 1478 |
|
---|
| 1479 | /* ACK/NAK ã¡ãã»ã¼ã¸åä¿¡ã¿ã¤ãã¼ãåæ¢ããã*/
|
---|
| 1480 | DHCP4_CLI_TIMER_LOCK();
|
---|
| 1481 | ct->timers[DHCP4C_TIMER_RCV_ACK] = 0;
|
---|
| 1482 | DHCP4_CLI_TIMER_UNLOCK();
|
---|
| 1483 |
|
---|
| 1484 | /*
|
---|
| 1485 | * ç¶æ
|
---|
| 1486 | ã REQUEST ã®æã¯ã
|
---|
| 1487 | * OFFER ã¡ãã»ã¼ã¸ãåä¿¡ã¡ãã»ã¼ã¸æ§é ä½ãªã¹ãã«æ»ãã
|
---|
| 1488 | */
|
---|
| 1489 | if (ct->fsm == DHCP4_FSM_REQUEST && ct->off_msg != NULL) {
|
---|
| 1490 | syscall(wai_sem(SEM_DHCP4_CLI_LOCK));
|
---|
| 1491 | ct->off_msg->next = ct->rcv_lst;
|
---|
| 1492 | ct->rcv_lst = ct->off_msg;
|
---|
| 1493 | syscall(sig_sem(SEM_DHCP4_CLI_LOCK));
|
---|
| 1494 | ct->off_msg = NULL;
|
---|
| 1495 | }
|
---|
| 1496 |
|
---|
| 1497 | /* BOUND ç¶æ
|
---|
| 1498 | ã«é·ç§»ããã*/
|
---|
| 1499 | start_bound(ct);
|
---|
| 1500 | return;
|
---|
| 1501 | }
|
---|
| 1502 |
|
---|
| 1503 | /* REQUEST ã¡ãã»ã¼ã¸ãä½æããã*/
|
---|
| 1504 | if (ct->fsm == DHCP4_FSM_REQUEST)
|
---|
| 1505 | ref = ct->off_msg;
|
---|
| 1506 | else
|
---|
| 1507 | ref = ct->act_msg;
|
---|
| 1508 | if ((error = setup_request_msg(ct, ref)) != E_OK) {
|
---|
| 1509 | syslog(LOG_NOTICE, "[DHCP4C] error, setup request message: %s", itron_strerror(error));
|
---|
| 1510 | ct->error = error;
|
---|
| 1511 | return;
|
---|
| 1512 | }
|
---|
| 1513 |
|
---|
| 1514 | /* éä¿¡ãéå§ãã¦ããã®æéãå¾ãã*/
|
---|
| 1515 | get_tim(&time);
|
---|
| 1516 | interval = time - ct->snd_start;
|
---|
| 1517 |
|
---|
| 1518 | /*
|
---|
| 1519 | * éä¿¡ãéå§ãã¦ããã®æéï¼ç§ï¼ãã¡ãã»ã¼ã¸ã«è¨å®ããã
|
---|
| 1520 | * æ大å¤ã¯ 65535ã
|
---|
| 1521 | */
|
---|
| 1522 | if (ct->fsm == DHCP4_FSM_REQUEST)
|
---|
| 1523 | secs = ct->secs;
|
---|
| 1524 | else {
|
---|
| 1525 | if (SYSTIM2SEC(interval) < 65536)
|
---|
| 1526 | secs = SYSTIM2SEC(interval);
|
---|
| 1527 | else
|
---|
| 1528 | secs = 65535;
|
---|
| 1529 | }
|
---|
| 1530 | HOST2MSG16(ct->snd_msg->msg.secs, secs);
|
---|
| 1531 |
|
---|
| 1532 | /* ãã³ããããã³ã°ã³ã¼ã«ã§ã¡ãã»ã¼ã¸ãéä¿¡ããã*/
|
---|
| 1533 | error = udp_snd_dat(ct->cepid, &ct->dst, &ct->snd_msg->msg, ct->snd_msg->len, TMO_NBLK);
|
---|
| 1534 | if (error != E_WBLK) {
|
---|
| 1535 | syslog(LOG_NOTICE, "[DHCP4C] error, send request message: %s", itron_strerror(error));
|
---|
| 1536 | ct->error = error;
|
---|
| 1537 | return;
|
---|
| 1538 | }
|
---|
| 1539 |
|
---|
| 1540 | /* éä¿¡ééãè¨å®ããã*/
|
---|
| 1541 | if (ct->interval == 0)
|
---|
| 1542 | /* æªè¨å® */
|
---|
| 1543 | ct->interval = TMO_DHCP4C_INIT_INTVL;
|
---|
| 1544 | else
|
---|
| 1545 | /* ããã¯ãªãã¢ã«ã´ãªãºã 㧠2åã«ããï¼ä¹±æ°ä½¿ç¨ï¼éä¿¡ééãå ç®ããã*/
|
---|
| 1546 | ct->interval += (netapp_rand() >> 2) % (ct->interval << 1);
|
---|
| 1547 |
|
---|
| 1548 | /* éä¿¡å¨æã®å¶éå¤ãè¶
|
---|
| 1549 | ããªãããã«ããã*/
|
---|
| 1550 | if (ct->interval > TMO_DHCP4C_MAX_BACKOFF)
|
---|
| 1551 | ct->interval = (TMO_DHCP4C_MAX_BACKOFF >> 1) + ((netapp_rand() >> 2) % TMO_DHCP4C_MAX_BACKOFF);
|
---|
| 1552 |
|
---|
| 1553 | /* ãªã¼ã¹æéã®ã¿ã¤ã ã¢ã¦ããå
|
---|
| 1554 | éãã */
|
---|
| 1555 | if (ct->fsm != DHCP4_FSM_REQUEST &&
|
---|
| 1556 | TIMEC_GT(ct->interval + time, ct->expire + ct->bind_start))
|
---|
| 1557 | ct->interval = ct->expire + ct->bind_start - time + SYSTIM_HZ;
|
---|
| 1558 |
|
---|
| 1559 | /* åéä¿¡ã¿ã¤ã ã¢ã¦ããè¨å®ããã*/
|
---|
| 1560 | DHCP4_CLI_TIMER_LOCK();
|
---|
| 1561 | ct->timers[DHCP4C_TIMER_SND_REQ] = SYSTIM2TIMER(ct->interval);
|
---|
| 1562 | DHCP4_CLI_TIMER_UNLOCK();
|
---|
| 1563 | }
|
---|
| 1564 |
|
---|
| 1565 | /*
|
---|
| 1566 | * send_release_msg -- RELEASE ã¡ãã»ã¼ã¸ãéä¿¡ããã
|
---|
| 1567 | */
|
---|
| 1568 |
|
---|
| 1569 | static void
|
---|
| 1570 | send_release_msg (T_DHCP4_CLI_CONTEXT *ct)
|
---|
| 1571 | {
|
---|
| 1572 | ER error;
|
---|
| 1573 |
|
---|
| 1574 | /* ã¿ã¤ã ã¢ã¦ããã©ã°ãã¯ãªã¢ã¼ããã*/
|
---|
| 1575 | ct->flags &= ~DHCP4C_FLAG_TMOUT_MASK;
|
---|
| 1576 |
|
---|
| 1577 | /* RELEASE ã¡ãã»ã¼ã¸ãä½æããã*/
|
---|
| 1578 | if ((error = setup_release_msg(ct, ct->act_msg)) != E_OK) {
|
---|
| 1579 | syslog(LOG_NOTICE, "[DHCP4C] error, setup release message: %s", itron_strerror(error));
|
---|
| 1580 | ct->error = error;
|
---|
| 1581 | return;
|
---|
| 1582 | }
|
---|
| 1583 |
|
---|
| 1584 | /* ãªã¼ã¹æ
|
---|
| 1585 | å ±ã解æ¾ããã*/
|
---|
| 1586 | rel_lease(ct);
|
---|
| 1587 |
|
---|
| 1588 | /* ãã³ããããã³ã°ã³ã¼ã«ã§ã¡ãã»ã¼ã¸ãéä¿¡ããã*/
|
---|
| 1589 | error = udp_snd_dat(ct->cepid, &ct->dst, &ct->snd_msg->msg, ct->snd_msg->len, TMO_NBLK);
|
---|
| 1590 | if (error != E_WBLK) {
|
---|
| 1591 | syslog(LOG_NOTICE, "[DHCP4C] error, send release message: %s", itron_strerror(error));
|
---|
| 1592 | ct->error = error;
|
---|
| 1593 | return;
|
---|
| 1594 | }
|
---|
| 1595 |
|
---|
| 1596 | /* ã¡ãã»ã¼ã¸éä¿¡å¾
|
---|
| 1597 | ã¡ãè¡ãã*/
|
---|
| 1598 | DHCP4_CLI_READY_WAIT(ct);
|
---|
| 1599 |
|
---|
| 1600 | /* SLEEP ç¶æ
|
---|
| 1601 | ã«é·ç§»ããã*/
|
---|
| 1602 | ct->fsm = DHCP4_FSM_SLEEP;
|
---|
| 1603 | }
|
---|
| 1604 |
|
---|
| 1605 | /*
|
---|
| 1606 | * offer_msg_timeout -- OFFER ã¡ãã»ã¼ã¸åä¿¡ã¿ã¤ã ã¢ã¦ãå¦ç
|
---|
| 1607 | */
|
---|
| 1608 |
|
---|
| 1609 | static void
|
---|
| 1610 | offer_msg_timeout (T_DHCP4_CLI_CONTEXT *ct)
|
---|
| 1611 | {
|
---|
| 1612 | /* OFFER ã¡ãã»ã¼ã¸ãåä¿¡ãã¦ããã°ãREQUEST ç¶æ
|
---|
| 1613 | ã«é·ç§»ããã*/
|
---|
| 1614 | ct->flags &= ~DHCP4C_FLAG_TMOUT_MASK;
|
---|
| 1615 | if (select_offer(ct)) {
|
---|
| 1616 |
|
---|
| 1617 | /* DISCOVER ã¡ãã»ã¼ã¸éä¿¡ã¿ã¤ãã¼ãåæ¢ããã*/
|
---|
| 1618 | DHCP4_CLI_TIMER_LOCK();
|
---|
| 1619 | ct->timers[DHCP4C_TIMER_SND_DISC] = 0;
|
---|
| 1620 | DHCP4_CLI_TIMER_UNLOCK();
|
---|
| 1621 |
|
---|
| 1622 | /* REQUEST ã¡ãã»ã¼ã¸ãéä¿¡ã㦠REQUEST ç¶æ
|
---|
| 1623 | ã«é·ç§»ããã*/
|
---|
| 1624 | start_send_request(ct, DHCP4_FSM_REQUEST);
|
---|
| 1625 | }
|
---|
| 1626 | else
|
---|
| 1627 | ct->error = E_TMOUT;
|
---|
| 1628 | }
|
---|
| 1629 |
|
---|
| 1630 | /*
|
---|
| 1631 | * send_discover_msg -- DISCOVERã¡ãã»ã¼ã¸ãéä¿¡ããã
|
---|
| 1632 | */
|
---|
| 1633 |
|
---|
| 1634 | static void
|
---|
| 1635 | send_discover_msg (T_DHCP4_CLI_CONTEXT *ct)
|
---|
| 1636 | {
|
---|
| 1637 | ER error;
|
---|
| 1638 | SYSTIM time;
|
---|
| 1639 | RELTIM interval;
|
---|
| 1640 |
|
---|
| 1641 | /* ã¿ã¤ã ã¢ã¦ããã©ã°ãã¯ãªã¢ã¼ããã*/
|
---|
| 1642 | ct->flags &= ~DHCP4C_FLAG_TMOUT_MASK;
|
---|
| 1643 |
|
---|
| 1644 | /* OFFER ã¡ãã»ã¼ã¸ãåä¿¡ãã¦ããã°ãREQUEST ç¶æ
|
---|
| 1645 | ã«é·ç§»ããã*/
|
---|
| 1646 | ct->flags &= ~DHCP4C_FLAG_TMOUT_MASK;
|
---|
| 1647 | if (select_offer(ct)) {
|
---|
| 1648 |
|
---|
| 1649 | /* OFFER ã¡ãã»ã¼ã¸åä¿¡ã¿ã¤ãã¼ãåæ¢ããã*/
|
---|
| 1650 | DHCP4_CLI_TIMER_LOCK();
|
---|
| 1651 | ct->timers[DHCP4C_TIMER_RCV_OFFER] = 0;
|
---|
| 1652 | DHCP4_CLI_TIMER_UNLOCK();
|
---|
| 1653 |
|
---|
| 1654 | /* REQUEST ã¡ãã»ã¼ã¸ãéä¿¡ã㦠REQUEST ç¶æ
|
---|
| 1655 | ã«é·ç§»ããã*/
|
---|
| 1656 | start_send_request(ct, DHCP4_FSM_REQUEST);
|
---|
| 1657 | return;
|
---|
| 1658 | }
|
---|
| 1659 |
|
---|
| 1660 | /* DISCOVER ã¡ãã»ã¼ã¸ãä½æããã*/
|
---|
| 1661 | if ((error = setup_discover_msg(ct)) != E_OK) {
|
---|
| 1662 | syslog(LOG_NOTICE, "[DHCP4C] error, setup discover message: %s", itron_strerror(error));
|
---|
| 1663 | ct->error = error;
|
---|
| 1664 | return;
|
---|
| 1665 | }
|
---|
| 1666 |
|
---|
| 1667 | /* éä¿¡ãéå§ãã¦ããã®æéãå¾ãã*/
|
---|
| 1668 | get_tim(&time);
|
---|
| 1669 | interval = time - ct->snd_start;
|
---|
| 1670 |
|
---|
| 1671 | /*
|
---|
| 1672 | * éä¿¡ãéå§ãã¦ããã®æéï¼ç§ï¼ãã¡ãã»ã¼ã¸ã«è¨å®ããã
|
---|
| 1673 | * æ大å¤ã¯ 65535ã
|
---|
| 1674 | */
|
---|
| 1675 | if (SYSTIM2SEC(interval) < 65536)
|
---|
| 1676 | ct->secs = SYSTIM2SEC(interval);
|
---|
| 1677 | else
|
---|
| 1678 | ct->secs = 65535;
|
---|
| 1679 | HOST2MSG16(ct->snd_msg->msg.secs, ct->secs);
|
---|
| 1680 |
|
---|
| 1681 | /* ãã³ããããã³ã°ã³ã¼ã«ã§ã¡ãã»ã¼ã¸ãéä¿¡ããã*/
|
---|
| 1682 | error = udp_snd_dat(ct->cepid, &ct->dst, &ct->snd_msg->msg, ct->snd_msg->len, TMO_NBLK);
|
---|
| 1683 | if (error != E_WBLK) {
|
---|
| 1684 | syslog(LOG_NOTICE, "[DHCP4C] error, send discover message: %s", itron_strerror(error));
|
---|
| 1685 | ct->error = error;
|
---|
| 1686 | return;
|
---|
| 1687 | }
|
---|
| 1688 |
|
---|
| 1689 | /* éä¿¡ééãè¨å®ããã*/
|
---|
| 1690 | if (ct->interval == 0)
|
---|
| 1691 | /* æªè¨å® */
|
---|
| 1692 | ct->interval = TMO_DHCP4C_INIT_INTVL;
|
---|
| 1693 | else
|
---|
| 1694 | /* ããã¯ãªãã¢ã«ã´ãªãºã 㧠2åã«ããï¼ä¹±æ°ä½¿ç¨ï¼éä¿¡ééãå ç®ããã*/
|
---|
| 1695 | ct->interval += (netapp_rand() >> 2) % (ct->interval << 1);
|
---|
| 1696 |
|
---|
| 1697 | /* éä¿¡å¨æã®å¶éå¤ãè¶
|
---|
| 1698 | ããªãããã«ããã*/
|
---|
| 1699 | if (ct->interval > TMO_DHCP4C_MAX_BACKOFF)
|
---|
| 1700 | ct->interval = (TMO_DHCP4C_MAX_BACKOFF >> 1) + ((netapp_rand() >> 2) % TMO_DHCP4C_MAX_BACKOFF);
|
---|
| 1701 |
|
---|
| 1702 | /* OFFER ã¡ãã»ã¼ã¸ã®åä¿¡ã¿ã¤ã ã¢ã¦ããè¶
|
---|
| 1703 | ããªãããã«èª¿æ´ããã*/
|
---|
| 1704 | if (TIMEC_GT(time + ct->interval, ct->snd_start + TMO_DHCP4C_OFFER))
|
---|
| 1705 | ct->interval = (TMO_DHCP4C_INIT_INTVL + TMO_DHCP4C_OFFER) - time + 1;
|
---|
| 1706 |
|
---|
| 1707 | /* åéä¿¡ã¿ã¤ã ã¢ã¦ããè¨å®ããã*/
|
---|
| 1708 | DHCP4_CLI_TIMER_LOCK();
|
---|
| 1709 | ct->timers[DHCP4C_TIMER_SND_DISC] = SYSTIM2TIMER(ct->interval);
|
---|
| 1710 | DHCP4_CLI_TIMER_UNLOCK();
|
---|
| 1711 | }
|
---|
| 1712 |
|
---|
| 1713 | #ifdef DHCP4_CLI_TASK
|
---|
| 1714 |
|
---|
| 1715 | /*
|
---|
| 1716 | * dhcpc_timer -- TIMER 管ç
|
---|
| 1717 | */
|
---|
| 1718 |
|
---|
| 1719 | static void
|
---|
| 1720 | dhcpc_timer (T_DHCP4_CLI_CONTEXT *ct)
|
---|
| 1721 | {
|
---|
| 1722 | int ix;
|
---|
| 1723 |
|
---|
| 1724 | DHCP4_CLI_TIMER_LOCK();
|
---|
| 1725 | for (ix = NUM_DHCP4C_TIMERS; ix -- > 0; ) {
|
---|
| 1726 | if (ct->timers[ix] != 0) {
|
---|
| 1727 | ct->timers[ix] --;
|
---|
| 1728 | if (ct->timers[ix] == 0) {
|
---|
| 1729 | ct->flags = (ct->flags & ~DHCP4C_FLAG_TMOUT_MASK) | DHCP4C_FLAG_TMOUT_TIMER | ix;
|
---|
| 1730 | DHCP4_CLI_READY_SIGNAL(ct);
|
---|
| 1731 | }
|
---|
| 1732 | }
|
---|
| 1733 | }
|
---|
| 1734 | DHCP4_CLI_TIMER_UNLOCK();
|
---|
| 1735 |
|
---|
| 1736 | /* 1ç§æ¯ã«ã¿ã¤ã ã¢ã¦ãããã*/
|
---|
| 1737 | timeout((callout_func)dhcpc_timer, ct, NET_TIMER_HZ);
|
---|
| 1738 | }
|
---|
| 1739 |
|
---|
| 1740 | #endif
|
---|
| 1741 |
|
---|
| 1742 | /*
|
---|
| 1743 | * expire_timeout -- EXPIRE ã¿ã¤ã ã¢ã¦ãå¦ç
|
---|
| 1744 | */
|
---|
| 1745 |
|
---|
| 1746 | static void
|
---|
| 1747 | expire_timeout (T_DHCP4_CLI_CONTEXT *ct)
|
---|
| 1748 | {
|
---|
| 1749 | //ER error;
|
---|
| 1750 |
|
---|
| 1751 | /* ã¿ã¤ã ã¢ã¦ããã©ã°ãã¯ãªã¢ã¼ããã*/
|
---|
| 1752 | ct->flags &= ~DHCP4C_FLAG_TMOUT_MASK;
|
---|
| 1753 |
|
---|
| 1754 | /* ç¶æ
|
---|
| 1755 | ã REQUEST ã®æã¯ä½ãããªãã*/
|
---|
| 1756 | if (ct->fsm == DHCP4_FSM_REQUEST)
|
---|
| 1757 | return;
|
---|
| 1758 |
|
---|
| 1759 | /* å
|
---|
| 1760 | ¨ã¦ã® TIMER ããã£ã³ã»ã«ããã*/
|
---|
| 1761 | cancel_all_timers(ct);
|
---|
| 1762 |
|
---|
| 1763 | /* ãªã¼ã¹ãããæ
|
---|
| 1764 | å ±ã解æ¾ããã*/
|
---|
| 1765 | rel_lease(ct);
|
---|
| 1766 |
|
---|
| 1767 | ct->error = E_TMOUT;
|
---|
| 1768 | }
|
---|
| 1769 |
|
---|
| 1770 | /*
|
---|
| 1771 | * rebind_timeout -- REBIND ã¿ã¤ã ã¢ã¦ãå¦ç
|
---|
| 1772 | */
|
---|
| 1773 |
|
---|
| 1774 | static void
|
---|
| 1775 | rebind_timeout (T_DHCP4_CLI_CONTEXT *ct)
|
---|
| 1776 | {
|
---|
| 1777 | /* ã¿ã¤ã ã¢ã¦ããã©ã°ãã¯ãªã¢ã¼ããã*/
|
---|
| 1778 | ct->flags &= ~DHCP4C_FLAG_TMOUT_MASK;
|
---|
| 1779 |
|
---|
| 1780 | /* å
|
---|
| 1781 | ¨ã¦ã® TIMER ããã£ã³ã»ã«ããã*/
|
---|
| 1782 | cancel_all_timers(ct);
|
---|
| 1783 |
|
---|
| 1784 | /* REQUEST ã¡ãã»ã¼ã¸ãéä¿¡ã㦠REBIND ç¶æ
|
---|
| 1785 | ã«é·ç§»ããã*/
|
---|
| 1786 | start_send_request(ct, DHCP4_FSM_REBIND);
|
---|
| 1787 | }
|
---|
| 1788 |
|
---|
| 1789 | /*
|
---|
| 1790 | * renew_timeout -- RENEW ã¿ã¤ã ã¢ã¦ãå¦ç
|
---|
| 1791 | */
|
---|
| 1792 |
|
---|
| 1793 | static void
|
---|
| 1794 | renew_timeout (T_DHCP4_CLI_CONTEXT *ct)
|
---|
| 1795 | {
|
---|
| 1796 | /* ã¿ã¤ã ã¢ã¦ããã©ã°ãã¯ãªã¢ã¼ããã*/
|
---|
| 1797 | ct->flags &= ~DHCP4C_FLAG_TMOUT_MASK;
|
---|
| 1798 |
|
---|
| 1799 | /* REQUEST ã¡ãã»ã¼ã¸ãéä¿¡ã㦠RENEW ç¶æ
|
---|
| 1800 | ã«é·ç§»ããã*/
|
---|
| 1801 | start_send_request(ct, DHCP4_FSM_RENEW);
|
---|
| 1802 | }
|
---|
| 1803 |
|
---|
| 1804 | /*
|
---|
| 1805 | * dispatch_timeout -- ã¿ã¤ã ã¢ã¦ãããæã®å¦ç
|
---|
| 1806 | */
|
---|
| 1807 |
|
---|
| 1808 | static ER
|
---|
| 1809 | dispatch_timeout (T_DHCP4_CLI_CONTEXT *ct)
|
---|
| 1810 | {
|
---|
| 1811 | switch (ct->flags & DHCP4C_FLAG_TMOUT_TIMER_MASK) {
|
---|
| 1812 |
|
---|
| 1813 | case DHCP4C_TIMER_SND_DISC:
|
---|
| 1814 | send_discover_msg(ct);
|
---|
| 1815 | break;
|
---|
| 1816 |
|
---|
| 1817 | case DHCP4C_TIMER_SND_REQ:
|
---|
| 1818 | send_request_msg(ct);
|
---|
| 1819 | break;
|
---|
| 1820 |
|
---|
| 1821 | case DHCP4C_TIMER_RCV_OFFER:
|
---|
| 1822 | offer_msg_timeout(ct);
|
---|
| 1823 | break;
|
---|
| 1824 |
|
---|
| 1825 | case DHCP4C_TIMER_RCV_ACK:
|
---|
| 1826 | ack_msg_timeout(ct);
|
---|
| 1827 | break;
|
---|
| 1828 |
|
---|
| 1829 | case DHCP4C_TIMER_RENEW:
|
---|
| 1830 | renew_timeout(ct);
|
---|
| 1831 | break;
|
---|
| 1832 |
|
---|
| 1833 | case DHCP4C_TIMER_REBIND:
|
---|
| 1834 | rebind_timeout(ct);
|
---|
| 1835 | break;
|
---|
| 1836 |
|
---|
| 1837 | case DHCP4C_TIMER_EXPIRE:
|
---|
| 1838 | expire_timeout(ct);
|
---|
| 1839 | break;
|
---|
| 1840 |
|
---|
| 1841 | case DHCP4C_TIMER_SND_REL:
|
---|
| 1842 | send_release_msg(ct);
|
---|
| 1843 | break;
|
---|
| 1844 |
|
---|
| 1845 | default:
|
---|
| 1846 | break;
|
---|
| 1847 | }
|
---|
| 1848 |
|
---|
| 1849 | return ct->error;
|
---|
| 1850 | }
|
---|
| 1851 |
|
---|
| 1852 | #ifdef DHCP4_CLI_TASK
|
---|
| 1853 |
|
---|
| 1854 | /*
|
---|
| 1855 | * dispatch_event -- ã¤ãã³ãæ¯ã®å¦ç
|
---|
| 1856 | */
|
---|
| 1857 |
|
---|
| 1858 | static ER
|
---|
| 1859 | dispatch_event (T_DHCP4_CLI_CONTEXT *ct)
|
---|
| 1860 | {
|
---|
| 1861 | ER error = E_OK;
|
---|
| 1862 |
|
---|
| 1863 | while (ct->fsm != DHCP4_FSM_SLEEP && error == E_OK) {
|
---|
| 1864 |
|
---|
| 1865 | /* ã¡ãã»ã¼ã¸ã®åä¿¡ã¨ã¿ã¤ã ã¢ã¦ããå¾
|
---|
| 1866 | ã¤ã*/
|
---|
| 1867 | DHCP4_CLI_READY_WAIT(ct);
|
---|
| 1868 |
|
---|
| 1869 | if (ct->flags & DHCP4C_FLAG_RCV_MSG) {
|
---|
| 1870 | while (ct->val_lst != NULL) {
|
---|
| 1871 | error = eval_rcv_msg(ct);
|
---|
| 1872 | }
|
---|
| 1873 | ct->flags &= ~DHCP4C_FLAG_RCV_MSG;
|
---|
| 1874 | }
|
---|
| 1875 | if (ct->flags & DHCP4C_FLAG_TMOUT_MASK)
|
---|
| 1876 | error = dispatch_timeout(ct);
|
---|
| 1877 |
|
---|
| 1878 | if (ct->error != E_OK)
|
---|
| 1879 | error = ct->error;
|
---|
| 1880 | }
|
---|
| 1881 |
|
---|
| 1882 | return error;
|
---|
| 1883 | }
|
---|
| 1884 |
|
---|
| 1885 | #endif
|
---|
| 1886 |
|
---|
| 1887 | /*
|
---|
| 1888 | * init_context -- DHCP ã¯ã©ã¤ã¢ã³ãã³ã³ããã¹ãæ§é ä½ãåæåããã
|
---|
| 1889 | */
|
---|
| 1890 |
|
---|
| 1891 | static void
|
---|
| 1892 | init_context (T_DHCP4_CLI_CONTEXT *ct, ID tskid, ID cepid)
|
---|
| 1893 | {
|
---|
| 1894 | memset(ct, 0, sizeof(*ct));
|
---|
| 1895 | ct->tskid = tskid;
|
---|
| 1896 | ct->cepid = cepid;
|
---|
| 1897 | ct->sc = IF_ETHER_NIC_GET_SOFTC();
|
---|
| 1898 | ct->dst.portno = DHCP4_SRV_CFG_PORTNO;
|
---|
| 1899 | ct->dst.ipaddr = IPV4_ADDRANY;
|
---|
| 1900 | }
|
---|
| 1901 |
|
---|
| 1902 | /*
|
---|
| 1903 | * rel_cli_msg -- ã¡ãã»ã¼ã¸æ§é ä½ã解æ¾ããã
|
---|
| 1904 | */
|
---|
| 1905 |
|
---|
| 1906 | static void
|
---|
| 1907 | rel_cli_msg (T_DHCP4_CLI_CONTEXT *ct)
|
---|
| 1908 | {
|
---|
| 1909 | T_DHCP4_CLI_MSG *ptr, *cell;
|
---|
| 1910 |
|
---|
| 1911 | for (ptr = ct->rcv_lst; ptr != NULL; ) {
|
---|
| 1912 | cell = ptr;
|
---|
| 1913 | ptr = ptr->next;
|
---|
| 1914 | syscall(rel_mpf(MPF_DHCP4_CLI_MSG, (void*)cell));
|
---|
| 1915 | }
|
---|
| 1916 |
|
---|
| 1917 | for (ptr = ct->val_lst; ptr != NULL; ) {
|
---|
| 1918 | cell = ptr;
|
---|
| 1919 | ptr = ptr->next;
|
---|
| 1920 | syscall(rel_mpf(MPF_DHCP4_CLI_MSG, (void*)cell));
|
---|
| 1921 | }
|
---|
| 1922 |
|
---|
| 1923 | for (ptr = ct->prf_lst; ptr != NULL; ) {
|
---|
| 1924 | cell = ptr;
|
---|
| 1925 | ptr = ptr->next;
|
---|
| 1926 | syscall(rel_mpf(MPF_DHCP4_CLI_MSG, (void*)cell));
|
---|
| 1927 | }
|
---|
| 1928 |
|
---|
| 1929 | if (ct->snd_msg != NULL)
|
---|
| 1930 | syscall(rel_mpf(MPF_DHCP4_CLI_MSG, (void*)ct->snd_msg));
|
---|
| 1931 | ct->rcv_lst = ct->prf_lst = ct->val_lst = ct->snd_msg = NULL;
|
---|
| 1932 | }
|
---|
| 1933 |
|
---|
| 1934 | /*
|
---|
| 1935 | * init_cli_msg -- åã¡ãã»ã¼ã¸æ§é ä½ãåæåããã
|
---|
| 1936 | */
|
---|
| 1937 |
|
---|
| 1938 | static ER
|
---|
| 1939 | init_cli_msg (T_DHCP4_CLI_CONTEXT *ct)
|
---|
| 1940 | {
|
---|
| 1941 | T_DHCP4_CLI_MSG *cell;
|
---|
| 1942 | ER error;
|
---|
| 1943 | int count;
|
---|
| 1944 |
|
---|
| 1945 | /* éä¿¡ã¡ãã»ã¼ã¸æ§é ä½ãç²å¾ããã*/
|
---|
| 1946 | if ((error = tget_mpf(MPF_DHCP4_CLI_MSG, (void*)&ct->snd_msg, TMO_DHCP4C_MPF_GET)) != E_OK) {
|
---|
| 1947 | syslog(LOG_NOTICE, "[DHCP4C] error, tget_mpf() for send: %s.", itron_strerror(error));
|
---|
| 1948 | return error;
|
---|
| 1949 | }
|
---|
| 1950 |
|
---|
| 1951 | /*
|
---|
| 1952 | * æå¹ãªãªã¼ã¹ã»ã¡ãã»ã¼ã¸æ§é ä½ãããå ´åã¯ã
|
---|
| 1953 | * ç²å¾ããåä¿¡ã¡ãã»ã¼ã¸æ§é ä½ãªã¹ãã®æ§é ä½ã 1æ¸ããã
|
---|
| 1954 | */
|
---|
| 1955 | if (ct->act_msg == NULL)
|
---|
| 1956 | count = NUM_DHCP4_MSG_LIST;
|
---|
| 1957 | else
|
---|
| 1958 | count = NUM_DHCP4_MSG_LIST - 1;
|
---|
| 1959 |
|
---|
| 1960 | /* åä¿¡ã¡ãã»ã¼ã¸æ§é ä½ãç²å¾ããã*/
|
---|
| 1961 | while (count --> 0) {
|
---|
| 1962 | if ((error = tget_mpf(MPF_DHCP4_CLI_MSG, (void*)&cell, TMO_DHCP4C_MPF_GET)) != E_OK) {
|
---|
| 1963 | syslog(LOG_NOTICE, "[DHCP4C] error, tget_mpf() for receive: %s.", itron_strerror(error));
|
---|
| 1964 | break;
|
---|
| 1965 | }
|
---|
| 1966 | cell->next = ct->rcv_lst;
|
---|
| 1967 | ct->rcv_lst = cell;
|
---|
| 1968 | }
|
---|
| 1969 |
|
---|
| 1970 | return E_OK;
|
---|
| 1971 | }
|
---|
| 1972 |
|
---|
| 1973 | /*
|
---|
| 1974 | * dhcp4c_renew_info -- ãããã¯ã¼ã¯æ
|
---|
| 1975 | å ±ãååå¾ããã
|
---|
| 1976 | */
|
---|
| 1977 |
|
---|
| 1978 | ER
|
---|
| 1979 | dhcp4c_renew_info (void)
|
---|
| 1980 | {
|
---|
| 1981 | if (context.fsm == DHCP4_FSM_BOUND) {
|
---|
| 1982 |
|
---|
| 1983 | /* REL_INFO ç¶æ
|
---|
| 1984 | ã«é·ç§»ããå¾ã« SLEEP ã解é¤ããããã«è¨å®ããã*/
|
---|
| 1985 | context.flags |= DHCP4C_FLAG_RENEW;
|
---|
| 1986 | start_rel_info(&context);
|
---|
| 1987 | return E_OK;
|
---|
| 1988 | }
|
---|
| 1989 | else if (context.fsm == DHCP4_FSM_SLEEP) {
|
---|
| 1990 |
|
---|
| 1991 | /* SLEEP ã解é¤ããã*/
|
---|
| 1992 | context.fsm = DHCP4_FSM_WAKE;
|
---|
| 1993 | context.timer = 0;
|
---|
| 1994 | wup_tsk(context.tskid);
|
---|
| 1995 | return E_OK;
|
---|
| 1996 | }
|
---|
| 1997 | else
|
---|
| 1998 | return E_OBJ;
|
---|
| 1999 | }
|
---|
| 2000 |
|
---|
| 2001 | /*
|
---|
| 2002 | * dhcp4c_rel_info -- DHCP ã§è¨å®ããããããã¯ã¼ã¯æ
|
---|
| 2003 | å ±ã解æ¾ããã
|
---|
| 2004 | */
|
---|
| 2005 |
|
---|
| 2006 | ER
|
---|
| 2007 | dhcp4c_rel_info (void)
|
---|
| 2008 | {
|
---|
| 2009 | /* REL_INFO ç¶æ
|
---|
| 2010 | ã«é·ç§»ããã*/
|
---|
| 2011 | start_rel_info(&context);
|
---|
| 2012 | return E_OK;
|
---|
| 2013 | }
|
---|
| 2014 |
|
---|
| 2015 | /*
|
---|
| 2016 | * dhcp4c_get_info -- DHCP ã§è¨å®ããããããã¯ã¼ã¯æ
|
---|
| 2017 | å ±ãè¿ãã
|
---|
| 2018 | */
|
---|
| 2019 |
|
---|
| 2020 | ER
|
---|
| 2021 | dhcp4c_get_info (T_IN4_ADDR *addr, uint32_t *expire, uint32_t *renew,
|
---|
| 2022 | uint32_t *rebind, SYSTIM *bind_start)
|
---|
| 2023 | {
|
---|
| 2024 | if (addr == NULL || expire == NULL ||
|
---|
| 2025 | renew == NULL || rebind == NULL || bind_start == NULL)
|
---|
| 2026 | return E_PAR;
|
---|
| 2027 | else if (context.act_msg == NULL)
|
---|
| 2028 | return E_OBJ;
|
---|
| 2029 | else {
|
---|
| 2030 | *addr = context.act_msg->srv.ipaddr;
|
---|
| 2031 | *expire = context.timers[DHCP4C_TIMER_EXPIRE];
|
---|
| 2032 | *renew = context.timers[DHCP4C_TIMER_RENEW];
|
---|
| 2033 | *rebind = context.timers[DHCP4C_TIMER_REBIND];
|
---|
| 2034 | *bind_start = context.bind_start;
|
---|
| 2035 | return E_OK;
|
---|
| 2036 | }
|
---|
| 2037 | }
|
---|
| 2038 |
|
---|
| 2039 | /*
|
---|
| 2040 | * ã³ã¼ã«ããã¯é¢æ°
|
---|
| 2041 | */
|
---|
| 2042 |
|
---|
| 2043 | ER
|
---|
| 2044 | callback_nblk_dhcp4_cli (ID cepid, FN fncd, void *p_parblk)
|
---|
| 2045 | {
|
---|
| 2046 | T_DHCP4_CLI_MSG *msg;
|
---|
| 2047 | ER_UINT len;
|
---|
| 2048 |
|
---|
| 2049 | len = *(ER_UINT*)p_parblk;
|
---|
| 2050 | if (len < 0 && len != E_RLWAI) {
|
---|
| 2051 | /* E_RLWAI 以å¤ã§ã0 以ä¸ã®å ´åã¯ãã¨ã©ã¼ãæå³ãã¦ããã*/
|
---|
| 2052 | syslog(LOG_NOTICE, "[DHCPC(CBR)] error: %s, fncd: %s", itron_strerror(len), in_strtfn(fncd));
|
---|
| 2053 | }
|
---|
| 2054 | else {
|
---|
| 2055 | if (fncd == TEV_UDP_RCV_DAT) {
|
---|
| 2056 |
|
---|
| 2057 | /* åä¿¡ã¡ãã»ã¼ã¸ãªã¹ãã空ã®æã¯ãåä¿¡ããªãã§ãã¼ã¿ã°ã©ã ãæ¨ã¦ãã*/
|
---|
| 2058 | if (context.rcv_lst == NULL)
|
---|
| 2059 | syslog(LOG_NOTICE, "[DHCP4C(CBR)] receive buffer all busy.");
|
---|
| 2060 | else {
|
---|
| 2061 | /* ã¡ãã»ã¼ã¸ãåä¿¡ããã¡ãã»ã¼ã¸æ§é ä½ãæºåããã*/
|
---|
| 2062 | syscall(wai_sem(SEM_DHCP4_CLI_LOCK));
|
---|
| 2063 | msg = context.rcv_lst;
|
---|
| 2064 | context.rcv_lst = context.rcv_lst->next;
|
---|
| 2065 | syscall(sig_sem(SEM_DHCP4_CLI_LOCK));
|
---|
| 2066 |
|
---|
| 2067 | /* ã¡ãã»ã¼ã¸ãåä¿¡ããã*/
|
---|
| 2068 | len = udp_rcv_dat(context.cepid, &msg->srv, &msg->msg, sizeof(msg->msg), TMO_POL);
|
---|
| 2069 |
|
---|
| 2070 | syscall(wai_sem(SEM_DHCP4_CLI_LOCK));
|
---|
| 2071 | msg->len = len;
|
---|
| 2072 | if (len >= 0) {
|
---|
| 2073 | /* åä¿¡ããã¡ãã»ã¼ã¸ãæ¤è¨¼ã¡ãã»ã¼ã¸ãªã¹ãã«ç§»ãã*/
|
---|
| 2074 | msg->next = context.val_lst;
|
---|
| 2075 | context.val_lst = msg;
|
---|
| 2076 | context.flags |= DHCP4C_FLAG_RCV_MSG;
|
---|
| 2077 | }
|
---|
| 2078 | else {
|
---|
| 2079 | /* ã¡ãã»ã¼ã¸æ§é ä½ãåä¿¡ã¡ãã»ã¼ã¸ãªã¹ãã«æ»ãã*/
|
---|
| 2080 | context.error = len;
|
---|
| 2081 | msg->next = context.rcv_lst;
|
---|
| 2082 | context.rcv_lst = msg;
|
---|
| 2083 | }
|
---|
| 2084 | syscall(sig_sem(SEM_DHCP4_CLI_LOCK));
|
---|
| 2085 | }
|
---|
| 2086 | }
|
---|
| 2087 | DHCP4_CLI_READY_SIGNAL((&context));
|
---|
| 2088 | }
|
---|
| 2089 | return E_OK;
|
---|
| 2090 | }
|
---|
| 2091 |
|
---|
| 2092 | #ifdef DHCP4_CLI_TASK
|
---|
| 2093 |
|
---|
| 2094 | /*
|
---|
| 2095 | * dhcp4_cli_task -- DHCP ã¯ã©ã¤ã¢ã³ãã¿ã¹ã¯
|
---|
| 2096 | */
|
---|
| 2097 |
|
---|
| 2098 | void
|
---|
| 2099 | dhcp4_cli_task (intptr_t exinf)
|
---|
| 2100 | {
|
---|
| 2101 | T_DHCP4_CLI_CONTEXT *ct;
|
---|
| 2102 | ID tskid;
|
---|
| 2103 | ER error = E_OK;
|
---|
| 2104 |
|
---|
| 2105 | dly_tsk(1000);
|
---|
| 2106 | get_tid(&tskid);
|
---|
| 2107 | syslog(LOG_NOTICE, "[DHCP4C:%d,%d] started.", tskid, (ID)exinf);
|
---|
| 2108 | dly_tsk(500);
|
---|
| 2109 | ct = &context;
|
---|
| 2110 |
|
---|
| 2111 | /* DHCP ã¯ã©ã¤ã¢ã³ãã³ã³ããã¹ãæ§é ä½ãåæåããã*/
|
---|
| 2112 | init_context(ct, tskid, (ID)exinf);
|
---|
| 2113 | ct->fsm = DHCP4_FSM_SLEEP;
|
---|
| 2114 |
|
---|
| 2115 | while (true) {
|
---|
| 2116 |
|
---|
| 2117 | /* ãªã¼ã¹ã解æ¾å¾ãååå¾ãæå®ããã¦ããªããã°ä¼æ¢ããã*/
|
---|
| 2118 | if (!(ct->flags & DHCP4C_FLAG_RENEW)) {
|
---|
| 2119 |
|
---|
| 2120 | /* ä¼æ¢ããã*/
|
---|
| 2121 | if (error == E_OK) {
|
---|
| 2122 | if (ct->fsm != DHCP4_FSM_SLEEP)
|
---|
| 2123 | syslog(LOG_NOTICE, "[DHCP4C] lease released, go to sleep.");
|
---|
| 2124 | }
|
---|
| 2125 | else {
|
---|
| 2126 | syslog(LOG_NOTICE, "[DHCP4C] server not available, go to sleep, error: %s.", itron_strerror(error));
|
---|
| 2127 | ct->fsm = DHCP4_FSM_SLEEP;
|
---|
| 2128 | }
|
---|
| 2129 | slp_tsk();
|
---|
| 2130 | }
|
---|
| 2131 | ct->flags = 0;
|
---|
| 2132 | ct->error = E_OK;
|
---|
| 2133 |
|
---|
| 2134 | /* 1ç§æ¯ã«ã¿ã¤ã ã¢ã¦ãããããã«ã¿ã¤ãã¼ãè¨å®ããã*/
|
---|
| 2135 | timeout((callout_func)dhcpc_timer, ct, NET_TIMER_HZ / DHCP4C_TIMER_HZ);
|
---|
| 2136 |
|
---|
| 2137 | /* ã¡ãã»ã¼ã¸æ§é ä½ãåæåããã*/
|
---|
| 2138 | if ((error = init_cli_msg(ct)) == E_OK) {
|
---|
| 2139 |
|
---|
| 2140 | /* SELECT ç¶æ
|
---|
| 2141 | ã«é·ç§»ããã*/
|
---|
| 2142 | start_select(ct);
|
---|
| 2143 |
|
---|
| 2144 | /* ã¡ã¤ã³ã«ã¼ã */
|
---|
| 2145 | error = dispatch_event(ct);
|
---|
| 2146 | }
|
---|
| 2147 |
|
---|
| 2148 | /* å
|
---|
| 2149 | ¨ã¦ã® TIMER ããã£ã³ã»ã«ããã*/
|
---|
| 2150 | cancel_all_timers(ct);
|
---|
| 2151 |
|
---|
| 2152 | /* ã¿ã¤ãã¼ãåæ¢ããã*/
|
---|
| 2153 | untimeout((callout_func)dhcpc_timer, ct);
|
---|
| 2154 |
|
---|
| 2155 | /* ã¡ãã»ã¼ã¸æ§é ä½ã解æ¾ããã*/
|
---|
| 2156 | rel_cli_msg (ct);
|
---|
| 2157 | }
|
---|
| 2158 | }
|
---|
| 2159 |
|
---|
| 2160 | #else
|
---|
| 2161 |
|
---|
| 2162 | T_DHCP4_CLI_CONTEXT *
|
---|
| 2163 | dhcp4_cli_initialize(ID tskid, ID cepid)
|
---|
| 2164 | {
|
---|
| 2165 | T_DHCP4_CLI_CONTEXT *ct = &context;
|
---|
| 2166 | /* DHCP ã¯ã©ã¤ã¢ã³ãã³ã³ããã¹ãæ§é ä½ãåæåããã*/
|
---|
| 2167 | init_context(ct, tskid, cepid);
|
---|
| 2168 | ct->fsm = DHCP4_FSM_SLEEP;
|
---|
| 2169 | ct->timer = TMO_FEVR;
|
---|
| 2170 | return ct;
|
---|
| 2171 | }
|
---|
| 2172 |
|
---|
| 2173 | int
|
---|
| 2174 | dhcp4_cli_get_timer(T_DHCP4_CLI_CONTEXT *ct)
|
---|
| 2175 | {
|
---|
| 2176 | if (ct->fsm == DHCP4_FSM_SLEEP)
|
---|
| 2177 | return TMO_FEVR;
|
---|
| 2178 |
|
---|
| 2179 | return ct->timer;
|
---|
| 2180 | }
|
---|
| 2181 |
|
---|
| 2182 | void
|
---|
| 2183 | dhcp4_cli_progress(T_DHCP4_CLI_CONTEXT *ct, int elapse)
|
---|
| 2184 | {
|
---|
| 2185 | int ix;
|
---|
| 2186 |
|
---|
| 2187 | if ((ct->fsm == DHCP4_FSM_SLEEP) || (ct->timer == TMO_FEVR))
|
---|
| 2188 | return;
|
---|
| 2189 |
|
---|
| 2190 | ct->timer -= elapse;
|
---|
| 2191 | if (ct->timer > 0)
|
---|
| 2192 | return;
|
---|
| 2193 |
|
---|
| 2194 | /* 1ç§æ¯ã«ã¿ã¤ã ã¢ã¦ãããããã«ã¿ã¤ãã¼ãè¨å®ããã*/
|
---|
| 2195 | ct->timer = 1000 * 1000;
|
---|
| 2196 |
|
---|
| 2197 | for (ix = NUM_DHCP4C_TIMERS; ix-- > 0; ) {
|
---|
| 2198 | if (ct->timers[ix] != 0) {
|
---|
| 2199 | ct->timers[ix] --;
|
---|
| 2200 | if (ct->timers[ix] <= 0) {
|
---|
| 2201 | ct->timers[ix] = 0;
|
---|
| 2202 | ct->flags = (ct->flags & ~DHCP4C_FLAG_TMOUT_MASK) | DHCP4C_FLAG_TMOUT_TIMER | ix;
|
---|
| 2203 | DHCP4_CLI_READY_SIGNAL(ct);
|
---|
| 2204 | }
|
---|
| 2205 | }
|
---|
| 2206 | }
|
---|
| 2207 | }
|
---|
| 2208 |
|
---|
| 2209 | void
|
---|
| 2210 | dhcp4_cli_wakeup(T_DHCP4_CLI_CONTEXT *ct)
|
---|
| 2211 | {
|
---|
| 2212 | if (ct->fsm == DHCP4_FSM_WAKE) {
|
---|
| 2213 | ct->flags = 0;
|
---|
| 2214 | ct->error = E_OK;
|
---|
| 2215 |
|
---|
| 2216 | /* ã¡ãã»ã¼ã¸æ§é ä½ãåæåããã*/
|
---|
| 2217 | if ((ct->error = init_cli_msg(ct)) != E_OK)
|
---|
| 2218 | return;
|
---|
| 2219 |
|
---|
| 2220 | ct->timer = 1000 * 1000;
|
---|
| 2221 |
|
---|
| 2222 | /* SELECT ç¶æ
|
---|
| 2223 | ã«é·ç§»ããã*/
|
---|
| 2224 | start_select(ct);
|
---|
| 2225 | }
|
---|
| 2226 |
|
---|
| 2227 | if (ct->flags & DHCP4C_FLAG_RCV_MSG) {
|
---|
| 2228 | while (ct->val_lst != NULL) {
|
---|
| 2229 | ct->error = eval_rcv_msg(ct);
|
---|
| 2230 | }
|
---|
| 2231 | ct->flags &= ~DHCP4C_FLAG_RCV_MSG;
|
---|
| 2232 | }
|
---|
| 2233 | }
|
---|
| 2234 |
|
---|
| 2235 | void
|
---|
| 2236 | dhcp4_cli_timeout(T_DHCP4_CLI_CONTEXT *ct)
|
---|
| 2237 | {
|
---|
| 2238 | if (ct->flags & DHCP4C_FLAG_TMOUT_MASK)
|
---|
| 2239 | ct->error = dispatch_timeout(ct);
|
---|
| 2240 |
|
---|
| 2241 | if (ct->error != E_OK || ct->fsm == DHCP4_FSM_SLEEP) {
|
---|
| 2242 | /* å
|
---|
| 2243 | ¨ã¦ã® TIMER ããã£ã³ã»ã«ããã*/
|
---|
| 2244 | cancel_all_timers(ct);
|
---|
| 2245 | ct->timer = TMO_FEVR;
|
---|
| 2246 |
|
---|
| 2247 | /* ã¡ãã»ã¼ã¸æ§é ä½ã解æ¾ããã*/
|
---|
| 2248 | rel_cli_msg(ct);
|
---|
| 2249 |
|
---|
| 2250 | /* ãªã¼ã¹ã解æ¾å¾ãååå¾ãæå®ããã¦ããªããã°ä¼æ¢ããã*/
|
---|
| 2251 | if (!(ct->flags & DHCP4C_FLAG_RENEW)) {
|
---|
| 2252 |
|
---|
| 2253 | /* ä¼æ¢ããã*/
|
---|
| 2254 | if (ct->error == E_OK) {
|
---|
| 2255 | if (ct->fsm != DHCP4_FSM_SLEEP)
|
---|
| 2256 | syslog(LOG_NOTICE, "[DHCP4C] lease released, go to sleep.");
|
---|
| 2257 | }
|
---|
| 2258 | else {
|
---|
| 2259 | syslog(LOG_NOTICE, "[DHCP4C] server not available, go to sleep, error: %s.", itron_strerror(ct->error));
|
---|
| 2260 | ct->error = E_OK;
|
---|
| 2261 | ct->fsm = DHCP4_FSM_SLEEP;
|
---|
| 2262 | }
|
---|
| 2263 | }
|
---|
| 2264 | }
|
---|
| 2265 | }
|
---|
| 2266 |
|
---|
| 2267 | #endif /* DHCP4_CLI_TASK */
|
---|
| 2268 | #endif /* of #ifdef DHCP4_CLI_CFG */
|
---|