[388] | 1 | /*
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| 2 | * TINET (TCP/IP Protocol Stack)
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| 3 | *
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| 4 | * Copyright (C) 2001-2017 by Dep. of Computer Science and Engineering
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| 5 | * Tomakomai National College of Technology, JAPAN
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| 6 | *
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| 7 | * ä¸è¨èä½æ¨©è
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| 8 | ã¯ï¼ä»¥ä¸ã® (1)ï½(4) ã®æ¡ä»¶ãï¼Free Software Foundation
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| 9 | * ã«ãã£ã¦å
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| 10 | ¬è¡¨ããã¦ãã GNU General Public License ã® Version 2 ã«è¨
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| 11 | * è¿°ããã¦ããæ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§ã¢ï¼æ¬ã½ããã¦ã§ã¢
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| 12 | * ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹å¤ã»åé
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| 13 | å¸ï¼ä»¥ä¸ï¼
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| 14 | * å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
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| 15 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
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| 16 | * 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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| 17 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
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| 18 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 19 | * ç¨ã§ããå½¢ã§åé
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| 20 | å¸ããå ´åã«ã¯ï¼åé
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| 21 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
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| 22 | * è
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| 23 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
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| 24 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 25 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 26 | * ç¨ã§ããªãå½¢ã§åé
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| 27 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®æ¡ä»¶ãæºãããã¨ï¼
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| 28 | * (a) åé
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| 29 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
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| 30 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
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| 31 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 32 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
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| 33 | * 害ãããï¼ä¸è¨èä½æ¨©è
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| 34 | ããã³TOPPERSããã¸ã§ã¯ããå
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| 35 | 責ãããã¨ï¼
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| 36 | *
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| 37 | * æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
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| 38 | ã
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| 39 | * ãã³TOPPERSããã¸ã§ã¯ãã¯ï¼æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ãã®é©ç¨å¯è½æ§ã
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| 40 | * å«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´
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| 41 | * æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ãã®è²¬ä»»ãè² ããªãï¼
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| 42 | *
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| 43 | * @(#) $Id: in_subr.c 388 2019-05-22 11:25:18Z coas-nagasima $
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| 44 | */
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| 45 |
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| 46 | /*
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| 47 | * Copyright (c) 1982, 1986, 1988, 1993
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| 48 | * The Regents of the University of California. All rights reserved.
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| 49 | *
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| 50 | * Redistribution and use in source and binary forms, with or without
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| 51 | * modification, are permitted provided that the following conditions
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| 52 | * are met:
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| 53 | * 1. Redistributions of source code must retain the above copyright
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| 54 | * notice, this list of conditions and the following disclaimer.
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| 55 | * 2. Redistributions in binary form must reproduce the above copyright
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| 56 | * notice, this list of conditions and the following disclaimer in the
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| 57 | * documentation and/or other materials provided with the distribution.
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| 58 | * 3. All advertising materials mentioning features or use of this software
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| 59 | * must display the following acknowledgement:
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| 60 | * This product includes software developed by the University of
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| 61 | * California, Berkeley and its contributors.
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| 62 | * 4. Neither the name of the University nor the names of its contributors
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| 63 | * may be used to endorse or promote products derived from this software
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| 64 | * without specific prior written permission.
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| 65 | *
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| 66 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 67 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 68 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 69 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 70 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 71 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 72 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 73 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 74 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 75 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 76 | * SUCH DAMAGE.
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| 77 | */
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| 78 |
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| 79 | #include <string.h>
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| 80 |
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| 81 | #ifdef TARGET_KERNEL_ASP
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| 82 |
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| 83 | #include <kernel.h>
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| 84 | #include <sil.h>
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| 85 | #include "kernel_cfg.h"
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| 86 |
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| 87 | #endif /* of #ifdef TARGET_KERNEL_ASP */
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| 88 |
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| 89 | #ifdef TARGET_KERNEL_JSP
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| 90 |
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| 91 | #include <s_services.h>
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| 92 | #include <t_services.h>
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| 93 | #include "kernel_id.h"
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| 94 |
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| 95 | #endif /* of #ifdef TARGET_KERNEL_JSP */
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| 96 |
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| 97 | #include <tinet_defs.h>
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| 98 | #include <tinet_config.h>
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| 99 |
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| 100 | #include <net/if.h>
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| 101 | #include <net/if_loop.h>
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| 102 | #include <net/if_ppp.h>
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| 103 | #include <net/ethernet.h>
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| 104 | #include <net/net.h>
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| 105 | #include <net/net_endian.h>
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| 106 | #include <net/net_var.h>
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| 107 | #include <net/net_buf.h>
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| 108 | #include <net/net_timer.h>
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| 109 |
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| 110 | #include <netinet/in.h>
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| 111 | #include <netinet/in_var.h>
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| 112 | #include <netinet/ip.h>
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| 113 | #include <netinet/ip_var.h>
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| 114 | #include <netinet/in_itron.h>
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| 115 |
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| 116 | #include <net/if_var.h>
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| 117 |
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| 118 | /*
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| 119 | * in_cksum_sum -- ãã§ãã¯ãµã ã®åè¨è¨ç®é¢æ°
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| 120 | *
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| 121 | * 注æ: data 㯠4 ãªã¯ãããåä½ã§ããã£ã³ã°ãããã¨ã
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| 122 | * data ã 2 ãªã¯ãããåä½ã«ã¢ã©ã¤ã³ããã¦ããªãã¨
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| 123 | * ä¾å¤ãçºçããå¯è½æ§ãããã
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| 124 | * len 㯠4 ãªã¯ãããåä½ã«ã¢ã©ã¤ã³ããã¦ãããã¨ã
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| 125 | *
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| 126 | * æ»ãå¤ã¯ãã¹ããã¤ããªã¼ã
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| 127 | */
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| 128 |
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| 129 | uint32_t
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| 130 | in_cksum_sum (void *data, uint_t len /*ãªã¯ãããåä½*/)
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| 131 | {
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| 132 | uint32_t sum = 0;
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| 133 |
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| 134 | for ( ; len > 0; len -= 2) {
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| 135 | sum += *((uint16_t*)data);
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| 136 | data = (uint8_t*)data + 2;
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| 137 | }
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| 138 |
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| 139 | #if _NET_CFG_BYTE_ORDER == _NET_CFG_BIG_ENDIAN
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| 140 | return sum;
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| 141 | #elif _NET_CFG_BYTE_ORDER == _NET_CFG_LITTLE_ENDIAN
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| 142 | return ((sum >> 8) & 0xffff) + ((sum & 0xff) << 8) + ((sum >> 24) & 0xff);
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| 143 | #endif /* #if _NET_CFG_BYTE_ORDER == _NET_CFG_BIG_ENDIAN */
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| 144 |
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| 145 | }
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| 146 |
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| 147 | /*
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| 148 | * in_cksum_carry -- ãã§ãã¯ãµã ã®æ¡ä¸ãè¨ç®é¢æ°
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| 149 | *
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| 150 | * 注æ: data 㯠4 ãªã¯ãããåä½ã§ããã£ã³ã°ãããã¨ã
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| 151 | * data ã 2 ãªã¯ãããåä½ã«ã¢ã©ã¤ã³ããã¦ããªãã¨
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| 152 | * ä¾å¤ãçºçããå¯è½æ§ãããã
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| 153 | * len 㯠4 ãªã¯ãããåä½ã«ã¢ã©ã¤ã³ããã¦ãããã¨ã
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| 154 | */
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| 155 |
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| 156 | uint32_t
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| 157 | in_cksum_carry (uint32_t sum)
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| 158 | {
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| 159 | uint32_t carry;
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| 160 |
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| 161 | while (sum >= 0x00010000) {
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| 162 | carry = sum >> 16;
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| 163 | sum = (sum & 0xffff) + carry;
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| 164 | }
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| 165 |
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| 166 | return sum;
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| 167 | }
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| 168 |
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| 169 | /*
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| 170 | * in_strtfn -- API æ©è½ã³ã¼ãã®æå表ç¾ãè¿ãã
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| 171 | */
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| 172 |
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| 173 | typedef struct t_strtfn {
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| 174 | FN fncd; /* API æ©è½ã³ã¼ã */
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| 175 | const char *str; /* æåè¡¨ç¾ */
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| 176 | } T_STRTFN;
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| 177 |
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| 178 | const T_STRTFN strtfn[] = {
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| 179 | { TEV_TCP_RCV_OOB, "TEV_TCP_RCV_OOB" },
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| 180 | { TFN_TCP_DEL_REP, "TFN_TCP_DEL_REP" },
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| 181 | { TFN_TCP_CRE_CEP, "TFN_TCP_CRE_CEP" },
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| 182 | { TFN_TCP_DEL_CEP, "TFN_TCP_DEL_CEP" },
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| 183 | { TFN_TCP_ACP_CEP, "TFN_TCP_ACP_CEP" },
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| 184 | { TFN_TCP_CON_CEP, "TFN_TCP_CON_CEP" },
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| 185 | { TFN_TCP_SHT_CEP, "TFN_TCP_SHT_CEP" },
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| 186 | { TFN_TCP_CLS_CEP, "TFN_TCP_CLS_CEP" },
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| 187 | { TFN_TCP_SND_DAT, "TFN_TCP_SND_DAT" },
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| 188 | { TFN_TCP_RCV_DAT, "TFN_TCP_RCV_DAT" },
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| 189 | { TFN_TCP_GET_BUF, "TFN_TCP_GET_BUF" },
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| 190 | { TFN_TCP_SND_BUF, "TFN_TCP_SND_BUF" },
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| 191 | { TFN_TCP_RCV_BUF, "TFN_TCP_RCV_BUF" },
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| 192 | { TFN_TCP_REL_BUF, "TFN_TCP_REL_BUF" },
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| 193 | { TFN_TCP_SND_OOB, "TFN_TCP_SND_OOB" },
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| 194 | { TFN_TCP_RCV_OOB, "TFN_TCP_RCV_OOB" },
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| 195 | { TFN_TCP_CAN_CEP, "TFN_TCP_CAN_CEP" },
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| 196 | { TFN_TCP_SET_OPT, "TFN_TCP_SET_OPT" },
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| 197 | { TFN_TCP_GET_OPT, "TFN_TCP_GET_OPT" },
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| 198 | { TFN_TCP_ALL, "TFN_TCP_ALL" },
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| 199 |
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| 200 | { TEV_UDP_RCV_DAT, "TEV_UDP_RCV_DAT" },
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| 201 | { TFN_UDP_DEL_CEP, "TFN_UDP_DEL_CEP" },
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| 202 | { TFN_UDP_SND_DAT, "TFN_UDP_SND_DAT" },
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| 203 | { TFN_UDP_RCV_DAT, "TFN_UDP_RCV_DAT" },
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| 204 | { TFN_UDP_CAN_CEP, "TFN_UDP_CAN_CEP" },
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| 205 | { TFN_UDP_SET_OPT, "TFN_UDP_SET_OPT" },
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| 206 | { TFN_UDP_GET_OPT, "TFN_UDP_GET_OPT" },
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| 207 | };
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| 208 |
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| 209 | const char *
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| 210 | in_strtfn (FN fncd)
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| 211 | {
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| 212 | int_t ix;
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| 213 |
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| 214 | for (ix = sizeof(strtfn) / sizeof(T_STRTFN); ix -- > 0; )
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| 215 | if (strtfn[ix].fncd == fncd)
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| 216 | return strtfn[ix].str;
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| 217 |
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| 218 | return "unknown TFN";
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| 219 | }
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| 220 |
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| 221 | #if defined(_IP4_CFG)
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| 222 |
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| 223 | /*
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| 224 | * ipv42str -- IPv4 ã¢ãã¬ã¹ãæååã«å¤æããã
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| 225 | */
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| 226 |
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| 227 | char *
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| 228 | ipv42str (char *buf, const T_IN4_ADDR *ipaddr)
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| 229 | {
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| 230 | static char addr_sbuf[NUM_IPV4ADDR_STR_BUFF][sizeof("123.123.123.123")];
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| 231 | static int_t bix = NUM_IPV4ADDR_STR_BUFF;
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| 232 |
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| 233 | char *start;
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| 234 |
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| 235 | if (buf == NULL) {
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| 236 | syscall(wai_sem(SEM_IP2STR_BUFF_LOCK));
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| 237 | buf = addr_sbuf[-- bix];
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| 238 | if (bix <= 0)
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| 239 | bix = NUM_IPV4ADDR_STR_BUFF;
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| 240 | syscall(sig_sem(SEM_IP2STR_BUFF_LOCK));
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| 241 | }
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| 242 |
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| 243 | start = buf;
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| 244 | buf += convert_hexdigit(buf, (uint_t)((*ipaddr >> 24) & 0xff), 10, 0, ' ');
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| 245 | *(buf ++) = '.';
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| 246 | buf += convert_hexdigit(buf, (uint_t)((*ipaddr >> 16) & 0xff), 10, 0, ' ');
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| 247 | *(buf ++) = '.';
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| 248 | buf += convert_hexdigit(buf, (uint_t)((*ipaddr >> 8) & 0xff), 10, 0, ' ');
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| 249 | *(buf ++) = '.';
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| 250 | buf += convert_hexdigit(buf, (uint_t)((*ipaddr ) & 0xff), 10, 0, ' ');
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| 251 | *buf = '\0';
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| 252 | return start;
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| 253 | }
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| 254 |
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| 255 | #endif /* of #if defined(_IP4_CFG) */
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| 256 |
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| 257 | /*
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| 258 | * in6_is_addr_ipv4mapped -- IPv4 å°å½±ã¢ãã¬ã¹ã§ããäºãæ¤æ»ããã
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| 259 | */
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| 260 |
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| 261 | bool_t
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| 262 | in6_is_addr_ipv4mapped (const T_IN6_ADDR *addr)
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| 263 | {
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| 264 | return IN6_IS_ADDR_V4MAPPED(addr);
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| 265 | }
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| 266 |
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| 267 | #if defined(_IP6_CFG) && defined(_IP4_CFG)
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| 268 |
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| 269 | /*
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| 270 | * ip_exchg_addr -- IP ã¢ãã¬ã¹ã交æããã
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| 271 | */
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| 272 |
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| 273 | static void
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| 274 | ip6_exchg_addr (T_NET_BUF *nbuf)
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| 275 | {
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| 276 | T_IP6_HDR *iph;
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| 277 | T_IN6_ADDR ipaddr;
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| 278 |
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| 279 | iph = GET_IP6_HDR(nbuf);
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| 280 |
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| 281 | /* IPv6 ã¢ãã¬ã¹ã交æããã*/
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| 282 | ipaddr = iph->src;
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| 283 | iph->src = iph->dst;
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| 284 | iph->dst = ipaddr;
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| 285 | }
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| 286 |
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| 287 | static void
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| 288 | ip4_exchg_addr (T_NET_BUF *nbuf)
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| 289 | {
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| 290 | T_IP4_HDR *iph;
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| 291 | T_IN4_ADDR ipaddr;
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| 292 |
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| 293 | iph = GET_IP4_HDR(nbuf);
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| 294 |
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| 295 | /* IPv4 ã¢ãã¬ã¹ã交æããã*/
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| 296 | ipaddr = iph->src;
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| 297 | iph->src = iph->dst;
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| 298 | iph->dst = ipaddr;
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| 299 | }
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| 300 |
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| 301 | void
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| 302 | ip_exchg_addr (T_NET_BUF *nbuf)
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| 303 | {
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| 304 | if (GET_IP_VER(nbuf) == 6)
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| 305 | ip6_exchg_addr(nbuf);
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| 306 | else
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| 307 | ip4_exchg_addr(nbuf);
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| 308 | }
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| 309 |
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| 310 | #else /* of #if defined(_IP6_CFG) && defined(_IP4_CFG) */
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| 311 |
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| 312 | /*
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| 313 | * ip_exchg_addr -- IP ã¢ãã¬ã¹ã交æããã
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| 314 | */
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| 315 |
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| 316 | void
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| 317 | ip_exchg_addr (T_NET_BUF *nbuf)
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| 318 | {
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| 319 | T_IP_HDR *iph;
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| 320 | T_IN_ADDR ipaddr;
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| 321 |
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| 322 | iph = GET_IP_HDR(nbuf);
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| 323 |
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| 324 | /* IP ã¢ãã¬ã¹ã交æããã*/
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| 325 | ipaddr = iph->src;
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| 326 | iph->src = iph->dst;
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| 327 | iph->dst = ipaddr;
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| 328 | }
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| 329 |
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| 330 | #endif /* of #if defined(_IP6_CFG) && defined(_IP4_CFG) */
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| 331 |
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| 332 | #if defined(_IP6_CFG) && defined(_IP4_CFG)
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| 333 |
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| 334 | /*
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| 335 | * inn_is_dstaddr_accept -- å®å
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| 336 | ã¢ãã¬ã¹ã¨ãã¦æ£ããããã§ãã¯ããã
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| 337 | */
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| 338 |
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| 339 | bool_t
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| 340 | inn_is_dstaddr_accept (T_IN6_ADDR *myaddr, T_NET_BUF *nbuf)
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| 341 | {
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| 342 | if (GET_IP_VER(nbuf)==IPV6_VERSION)
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| 343 | return INN6_IS_DSTADDR_ACCEPT(myaddr, nbuf);
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| 344 | else /*if (GET_IP_VER(nbuf)==IPV4_VERSION)*/ {
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| 345 | T_IP4_HDR *ip4h;
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| 346 |
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| 347 | ip4h = GET_IP4_HDR(nbuf);
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| 348 | if (IN6_IS_ADDR_UNSPECIFIED(myaddr))
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| 349 | return ntohl(ip4h->dst) == IF_GET_IFNET()->in4_ifaddr.addr;
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| 350 | else {
|
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| 351 | T_IN6_ADDR dstaddr;
|
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| 352 |
|
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| 353 | return IN6_ARE_ADDR_EQUAL(myaddr, in6_make_ipv4mapped(&dstaddr, ntohl(ip4h->dst)));
|
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| 354 | }
|
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| 355 | }
|
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| 356 | }
|
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| 357 |
|
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| 358 | /*
|
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| 359 | * inn_are_net_srcaddr_equal -- ã¢ãã¬ã¹ãåä¸ããã§ãã¯ããã
|
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| 360 | */
|
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| 361 |
|
---|
| 362 | bool_t
|
---|
| 363 | inn_are_net_srcaddr_equal (T_IN6_ADDR *ipaddr, T_NET_BUF *nbuf)
|
---|
| 364 | {
|
---|
| 365 | if (GET_IP_VER(nbuf)==IPV6_VERSION)
|
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| 366 | return IN6_ARE_ADDR_EQUAL(ipaddr, &GET_IP6_HDR(nbuf)->src);
|
---|
| 367 | else /*if (GET_IP_VER(nbuf)==IPV4_VERSION)*/ {
|
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| 368 |
|
---|
| 369 |
|
---|
| 370 | T_IN6_ADDR srcaddr;
|
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| 371 |
|
---|
| 372 | return IN6_ARE_ADDR_EQUAL(ipaddr, in6_make_ipv4mapped(&srcaddr, ntohl(GET_IP4_HDR(nbuf)->src)));
|
---|
| 373 | }
|
---|
| 374 | }
|
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| 375 |
|
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| 376 | /*
|
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| 377 | * inn_copy_to_host -- IP ããããããã¹ã表ç¾å¤æãã¦ãIP ã¢ãã¬ã¹ãã³ãã¼ããã
|
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| 378 | */
|
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| 379 |
|
---|
| 380 | void
|
---|
| 381 | inn_copy_to_host (T_IN6_ADDR *dst, T_NET_BUF *nbuf)
|
---|
| 382 | {
|
---|
| 383 | if (GET_IP_VER(nbuf)==IPV6_VERSION)
|
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| 384 | memcpy(dst, &GET_IP6_HDR(nbuf)->src, sizeof(T_IN6_ADDR));
|
---|
| 385 | else /*if (GET_IP_VER(nbuf)==IPV4_VERSION)*/
|
---|
| 386 | in6_make_ipv4mapped(dst, ntohl(GET_IP4_HDR(nbuf)->src));
|
---|
| 387 |
|
---|
| 388 | }
|
---|
| 389 |
|
---|
| 390 | /*
|
---|
| 391 | * inn_get_datagram -- IPv6/IPv4 ãã¼ã¿ã°ã©ã ãç²å¾ããããããè¨å®ããã
|
---|
| 392 | */
|
---|
| 393 |
|
---|
| 394 | ER
|
---|
| 395 | inn_get_datagram (T_NET_BUF **nbuf, uint_t len, uint_t maxlen,
|
---|
| 396 | T_IN6_ADDR *dstaddr, T_IN6_ADDR *srcaddr,
|
---|
| 397 | uint8_t next, uint8_t hlim, ATR nbatr, TMO tmout)
|
---|
| 398 | {
|
---|
| 399 | if (IN6_IS_ADDR_V4MAPPED(dstaddr)) {
|
---|
| 400 | T_IN4_ADDR ip4dstaddr, ip4srcaddr;
|
---|
| 401 |
|
---|
| 402 | ip4dstaddr = ntohl(dstaddr->s6_addr32[3]);
|
---|
| 403 | if (IN6_IS_ADDR_UNSPECIFIED(srcaddr))
|
---|
| 404 | ip4srcaddr = IF_GET_IFNET()->in4_ifaddr.addr;
|
---|
| 405 | else
|
---|
| 406 | ip4srcaddr = ntohl(srcaddr->s6_addr32[3]);
|
---|
| 407 |
|
---|
| 408 | return in4_get_datagram(nbuf, len, maxlen, &ip4dstaddr, &ip4srcaddr, next, hlim, nbatr, tmout);
|
---|
| 409 | }
|
---|
| 410 | else
|
---|
| 411 | return in6_get_datagram(nbuf, len, maxlen, dstaddr, srcaddr, next, hlim, nbatr, tmout);
|
---|
| 412 | }
|
---|
| 413 |
|
---|
| 414 | /*
|
---|
| 415 | * inn_addrwithifp -- å®å
|
---|
| 416 | ã¢ãã¬ã¹ã«ãµããããéä¿¡å
|
---|
| 417 | ã¢ãã¬ã¹ãã
|
---|
| 418 | * ãããã¯ã¼ã¯ã¤ã³ã¿ãã§ã¼ã¹ããæ¢ç´¢ããã
|
---|
| 419 | */
|
---|
| 420 |
|
---|
| 421 | T_IN6_ADDR *
|
---|
| 422 | inn_addrwithifp (T_IFNET *ifp, T_IN6_ADDR *src, T_IN6_ADDR *dst)
|
---|
| 423 | {
|
---|
| 424 | T_IN6_IFADDR *ifaddr;
|
---|
| 425 |
|
---|
| 426 | if (IN6_IS_ADDR_V4MAPPED(dst))
|
---|
| 427 | return in6_make_ipv4mapped (src, ifp->in4_ifaddr.addr);
|
---|
| 428 | else if ((ifaddr = in6_ifawithifp(ifp, dst)) == NULL)
|
---|
| 429 | return NULL;
|
---|
| 430 | else {
|
---|
| 431 | *src = ifaddr->addr;
|
---|
| 432 | return src;
|
---|
| 433 | }
|
---|
| 434 | }
|
---|
| 435 |
|
---|
| 436 | /*
|
---|
| 437 | * inn_is_addr_multicast -- ã¢ãã¬ã¹ããã«ããã£ã¹ãã¢ãã¬ã¹ããã§ãã¯ããã
|
---|
| 438 | */
|
---|
| 439 |
|
---|
| 440 | bool_t
|
---|
| 441 | inn_is_addr_multicast (T_IN6_ADDR *addr)
|
---|
| 442 | {
|
---|
| 443 |
|
---|
| 444 | if (IN6_IS_ADDR_V4MAPPED(addr))
|
---|
| 445 | return IN4_IS_ADDR_MULTICAST(ntohl(addr->s6_addr32[3]));
|
---|
| 446 | else
|
---|
| 447 | return IN6_IS_ADDR_MULTICAST(addr);
|
---|
| 448 | }
|
---|
| 449 |
|
---|
| 450 | #endif /* of #if defined(_IP6_CFG) && defined(_IP4_CFG) */
|
---|
| 451 |
|
---|
| 452 | /*
|
---|
| 453 | * ãã¤ããªã¼ãé¢æ°ã®å®ç¾©
|
---|
| 454 | *
|
---|
| 455 | * tinet/net/net.h ã§ããã¤ããªã¼ãã®å®ç¾©ãè¡ã£ã¦ãããã
|
---|
| 456 | * tinet/net/net.h ãã¤ã³ã¯ã«ã¼ãããªã
|
---|
| 457 | * ã¢ããªã±ã¼ã·ã§ã³ããã°ã©ã ç¨ã«
|
---|
| 458 | * ã¿ã¼ã²ããä¾åããªããã¤ããªã¼ãé¢æ°ãå®ç¾©ããã
|
---|
| 459 | */
|
---|
| 460 |
|
---|
| 461 | #if defined(_NET_CFG_BYTE_ORDER)
|
---|
| 462 |
|
---|
| 463 | #undef ntohs
|
---|
| 464 | #undef htons
|
---|
| 465 | #undef ntohl
|
---|
| 466 | #undef htonl
|
---|
| 467 |
|
---|
| 468 | #if _NET_CFG_BYTE_ORDER == _NET_CFG_BIG_ENDIAN
|
---|
| 469 |
|
---|
| 470 | uint16_t
|
---|
| 471 | ntohs (uint16_t net)
|
---|
| 472 | {
|
---|
| 473 | return net;
|
---|
| 474 | }
|
---|
| 475 |
|
---|
| 476 | uint16_t
|
---|
| 477 | htons (uint16_t host)
|
---|
| 478 | {
|
---|
| 479 | return host;
|
---|
| 480 | }
|
---|
| 481 |
|
---|
| 482 | uint32_t
|
---|
| 483 | ntohl (uint32_t net)
|
---|
| 484 | {
|
---|
| 485 | return net;
|
---|
| 486 | }
|
---|
| 487 |
|
---|
| 488 | uint32_t
|
---|
| 489 | htonl (uint32_t host)
|
---|
| 490 | {
|
---|
| 491 | return host;
|
---|
| 492 | }
|
---|
| 493 |
|
---|
| 494 | #elif _NET_CFG_BYTE_ORDER == _NET_CFG_LITTLE_ENDIAN /* of #if _NET_CFG_BYTE_ORDER == _NET_CFG_BIG_ENDIAN */
|
---|
| 495 |
|
---|
| 496 | uint16_t
|
---|
| 497 | ntohs (uint16_t net)
|
---|
| 498 | {
|
---|
| 499 | return NET_REV_ENDIAN_HWORD(net);
|
---|
| 500 | }
|
---|
| 501 |
|
---|
| 502 | uint16_t
|
---|
| 503 | htons (uint16_t host)
|
---|
| 504 | {
|
---|
| 505 | return NET_REV_ENDIAN_HWORD(host);
|
---|
| 506 | }
|
---|
| 507 |
|
---|
| 508 | uint32_t
|
---|
| 509 | ntohl (uint32_t net)
|
---|
| 510 | {
|
---|
| 511 | return NET_REV_ENDIAN_WORD(net);
|
---|
| 512 | }
|
---|
| 513 |
|
---|
| 514 | uint32_t
|
---|
| 515 | htonl (uint32_t host)
|
---|
| 516 | {
|
---|
| 517 | return NET_REV_ENDIAN_WORD(host);
|
---|
| 518 | }
|
---|
| 519 |
|
---|
| 520 | #else /* #if _NET_CFG_BYTE_ORDER == _NET_CFG_BIG_ENDIAN */
|
---|
| 521 |
|
---|
| 522 | #error "_NET_CFG_BYTE_ORDER expected."
|
---|
| 523 |
|
---|
| 524 | #endif /* #if _NET_CFG_BYTE_ORDER == _NET_CFG_BIG_ENDIAN */
|
---|
| 525 |
|
---|
| 526 | #endif /* of #if defined(_NET_CFG_BYTE_ORDER) */
|
---|