/* * Copyright (C) 1996-2023 The Squid Software Foundation and contributors * * Squid software is distributed under GPLv2+ license and includes * contributions from numerous individuals and organizations. * Please see the COPYING and CONTRIBUTORS files for details. */ /* DEBUG: section 37 ICMP Routines */ #include "squid.h" #include "debug/Stream.h" #include "Icmp.h" #include "time/gadgets.h" Icmp::Icmp() { #if USE_ICMP icmp_sock = -1; icmp_ident = 0; #endif } void Icmp::Close() { #if USE_ICMP if (icmp_sock > 0) close(icmp_sock); icmp_sock = -1; icmp_ident = 0; #endif } #if USE_ICMP int Icmp::CheckSum(unsigned short *ptr, int size) { long sum; unsigned short oddbyte; unsigned short answer; if (!ptr) return (int)htons(0xffff); // bad input. sum = 0; while (size > 1) { sum += *ptr; ++ptr; size -= 2; } if (size == 1) { oddbyte = 0; *((unsigned char *) &oddbyte) = *(unsigned char *) ptr; sum += oddbyte; } sum = (sum >> 16) + (sum & 0xffff); sum += (sum >> 16); answer = (unsigned short) ~sum; return (answer); } int Icmp::ipHops(int ttl) { if (ttl < 33) return 33 - ttl; if (ttl < 63) return 63 - ttl; /* 62 = (64+60)/2 */ if (ttl < 65) return 65 - ttl; /* 62 = (64+60)/2 */ if (ttl < 129) return 129 - ttl; if (ttl < 193) return 193 - ttl; return 256 - ttl; } void Icmp::Log(const Ip::Address &addr, const uint8_t type, const char* pkt_str, const int rtt, const int hops) { debugs(42, 2, "pingerLog: " << current_time << " " << std::left << std::setw(45) << addr << " " << type << " " << std::setw(15) << pkt_str << " " << rtt << "ms " << hops << " hops"); } #endif /* USE_ICMP */