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fab463b4 | 1 | /* |
262a0e14 | 2 | * $Id$ |
fab463b4 | 3 | * |
4 | * DEBUG: section 37 ICMP Routines | |
cc192b50 | 5 | * AUTHOR: Duane Wessels, Amos Jeffries |
fab463b4 | 6 | * |
2b6662ba | 7 | * SQUID Web Proxy Cache http://www.squid-cache.org/ |
e25c139f | 8 | * ---------------------------------------------------------- |
fab463b4 | 9 | * |
2b6662ba | 10 | * Squid is the result of efforts by numerous individuals from |
11 | * the Internet community; see the CONTRIBUTORS file for full | |
12 | * details. Many organizations have provided support for Squid's | |
13 | * development; see the SPONSORS file for full details. Squid is | |
14 | * Copyrighted (C) 2001 by the Regents of the University of | |
15 | * California; see the COPYRIGHT file for full details. Squid | |
16 | * incorporates software developed and/or copyrighted by other | |
17 | * sources; see the CREDITS file for full details. | |
fab463b4 | 18 | * |
19 | * This program is free software; you can redistribute it and/or modify | |
20 | * it under the terms of the GNU General Public License as published by | |
21 | * the Free Software Foundation; either version 2 of the License, or | |
22 | * (at your option) any later version. | |
26ac0430 | 23 | * |
fab463b4 | 24 | * This program is distributed in the hope that it will be useful, |
25 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
26 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
27 | * GNU General Public License for more details. | |
26ac0430 | 28 | * |
fab463b4 | 29 | * You should have received a copy of the GNU General Public License |
30 | * along with this program; if not, write to the Free Software | |
cbdec147 | 31 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
e25c139f | 32 | * |
fab463b4 | 33 | */ |
6ffa5ad9 | 34 | #include "squid.h" |
b826ffb5 | 35 | #include "Icmp.h" |
f19d2c69 | 36 | #include "SquidTime.h" |
cc192b50 | 37 | #include "Debug.h" |
6ffa5ad9 | 38 | |
b826ffb5 | 39 | Icmp::Icmp() |
cc192b50 | 40 | { |
e97f40f4 | 41 | #if USE_ICMP |
cc192b50 | 42 | icmp_sock = -1; |
43 | icmp_ident = 0; | |
674ac814 | 44 | #endif |
6ffa5ad9 | 45 | } |
46 | ||
cc192b50 | 47 | void |
b826ffb5 | 48 | Icmp::Close() |
6ffa5ad9 | 49 | { |
cc192b50 | 50 | #if USE_ICMP |
26ac0430 | 51 | if (icmp_sock > 0) |
cc192b50 | 52 | close(icmp_sock); |
53 | icmp_sock = -1; | |
54 | icmp_ident = 0; | |
674ac814 | 55 | #endif |
6ffa5ad9 | 56 | } |
57 | ||
cc192b50 | 58 | #if USE_ICMP |
62e76326 | 59 | |
cc192b50 | 60 | int |
b826ffb5 | 61 | Icmp::CheckSum(unsigned short *ptr, int size) |
cc192b50 | 62 | { |
63 | long sum; | |
64 | unsigned short oddbyte; | |
65 | unsigned short answer; | |
62e76326 | 66 | |
4d6662d9 | 67 | if (!ptr) return (int)htons(0xffff); // bad input. |
62e76326 | 68 | |
cc192b50 | 69 | sum = 0; |
62e76326 | 70 | |
cc192b50 | 71 | while (size > 1) { |
72 | sum += *ptr++; | |
73 | size -= 2; | |
16b204c4 | 74 | } |
16b204c4 | 75 | |
cc192b50 | 76 | if (size == 1) { |
77 | oddbyte = 0; | |
78 | *((unsigned char *) &oddbyte) = *(unsigned char *) ptr; | |
79 | sum += oddbyte; | |
80 | } | |
bf8fe701 | 81 | |
cc192b50 | 82 | sum = (sum >> 16) + (sum & 0xffff); |
83 | sum += (sum >> 16); | |
84 | answer = (unsigned short) ~sum; | |
85 | return (answer); | |
e97f40f4 | 86 | } |
8a6218c6 | 87 | |
cc192b50 | 88 | int |
b826ffb5 | 89 | Icmp::ipHops(int ttl) |
16b204c4 | 90 | { |
cc192b50 | 91 | if (ttl < 33) |
92 | return 33 - ttl; | |
62e76326 | 93 | |
cc192b50 | 94 | if (ttl < 63) |
95 | return 63 - ttl; /* 62 = (64+60)/2 */ | |
62e76326 | 96 | |
cc192b50 | 97 | if (ttl < 65) |
98 | return 65 - ttl; /* 62 = (64+60)/2 */ | |
62e76326 | 99 | |
cc192b50 | 100 | if (ttl < 129) |
101 | return 129 - ttl; | |
16b204c4 | 102 | |
cc192b50 | 103 | if (ttl < 193) |
104 | return 193 - ttl; | |
62e76326 | 105 | |
cc192b50 | 106 | return 256 - ttl; |
16b204c4 | 107 | } |
108 | ||
e97f40f4 | 109 | void |
b7ac5457 | 110 | Icmp::Log(const Ip::Address &addr, const u_int8_t type, const char* pkt_str, const int rtt, const int hops) |
16b204c4 | 111 | { |
cc192b50 | 112 | debugs(42, 2, "pingerLog: " << std::setw(9) << current_time.tv_sec << |
113 | "." << std::setfill('0') << std::setw(6) << | |
114 | current_time.tv_usec << " " << std::left << std::setfill(' ') << | |
115 | std::setw(45) << addr << " " << type << | |
116 | " " << std::setw(15) << pkt_str << " " << rtt << | |
117 | "ms " << hops << " hops"); | |
16b204c4 | 118 | } |
fab463b4 | 119 | |
cc192b50 | 120 | #endif /* USE_ICMP */ |