-/* \r
- * COPYRIGHT: See COPYING in the top level directory\r
- * PROJECT: ReactOS traceroute utility\r
- * FILE: apps/utils/net/tracert/tracert.c\r
- * PURPOSE: trace a packets route through a network\r
- * PROGRAMMERS: Ged Murphy (gedmurphy@gmail.com)\r
- * REVISIONS:\r
- * GM 03/05/05 Created\r
- *\r
- */\r
-\r
-\r
-#include <windows.h>\r
-#include <winsock2.h>\r
-#include <tchar.h>\r
-#include <stdio.h>\r
-#include <stdlib.h>\r
-#include <ws2tcpip.h>\r
-#include <string.h>\r
-#include <time.h>\r
-#include "tracert.h"\r
-\r
-#define WIN32_LEAN_AND_MEAN\r
-\r
-#ifdef DBG\r
-#undef DBG\r
-#endif\r
-\r
-/*\r
- * globals\r
- */\r
-SOCKET icmpSock; // socket descriptor \r
-SOCKADDR_IN source, dest; // source and destination address info\r
-ECHO_REPLY_HEADER sendpacket; // ICMP echo packet\r
-IPv4_HEADER recvpacket; // return reveive packet\r
-\r
-BOOL bUsePerformanceCounter; // whether to use the high res performance counter\r
-LARGE_INTEGER TicksPerMs; // number of millisecs in relation to proc freq\r
-LARGE_INTEGER TicksPerUs; // number of microsecs in relation to proc freq\r
-LONGLONG lTimeStart; // send packet, timer start\r
-LONGLONG lTimeEnd; // receive packet, timer end\r
-\r
-CHAR cHostname[256]; // target hostname\r
-CHAR cDestIP[18]; // target IP\r
-\r
-\r
-/*\r
- * command line options\r
- */\r
-BOOL bResolveAddresses = TRUE; // -d MS ping defaults to true.\r
-INT iMaxHops = 30; // -h Max number of hops before trace ends\r
-INT iHostList; // -j @UNIMPLEMENTED@\r
-INT iTimeOut = 2000; // -w time before packet times out\r
-\r
-\r
-\r
-\r
-/* \r
- *\r
- * Parse command line parameters and set any options\r
- *\r
- */\r
-BOOL ParseCmdline(int argc, char* argv[])\r
-{\r
- int i;\r
- \r
- if (argc < 2) \r
- {\r
- Usage();\r
- return FALSE;\r
- }\r
-\r
- for (i = 1; i < argc; i++) {\r
- if (argv[i][0] == '-') {\r
- switch (argv[i][1]) {\r
- case 'd': bResolveAddresses = FALSE; \r
- break;\r
- case 'h': sscanf(argv[i+1], "%d", &iMaxHops); \r
- break;\r
- case 'l': break; /* @unimplemented@ */\r
- case 'w': sscanf(argv[i+1], "%d", &iTimeOut); \r
- break;\r
- default:\r
- _tprintf(_T("%s is not a valid option.\n"), argv[i]);\r
- Usage();\r
- return FALSE;\r
- }\r
- } else {\r
- /* copy target address */\r
- strncpy(cHostname, argv[i], 255);\r
-\r
- }\r
- }\r
- \r
- return TRUE;\r
-}\r
-\r
-\r
-\r
-/*\r
- *\r
- * Driver function, controls the traceroute program\r
- * \r
- */\r
-INT Driver(VOID) {\r
- \r
- INT i;\r
- INT iHopCount = 1; // hop counter. default max is 30\r
- INT iSeqNum = 0; // initialise packet sequence number\r
- INT iTTL = 1; // set initial packet TTL to 1\r
- BOOL bFoundTarget = FALSE; // Have we reached our destination yet\r
- BOOL bAwaitPacket; // indicates whether we have recieved a good packet\r
- INT iDecRes; // DecodeResponse return value\r
- INT iRecieveReturn; // RecieveReturn return value\r
- INT iNameInfoRet; // getnameinfo return value\r
- INT iPacketSize = PACKET_SIZE; // packet size\r
- WORD wHeaderLen; // header length\r
- PECHO_REPLY_HEADER icmphdr; \r
- \r
- \r
- //temps for getting host name\r
- CHAR cHost[256];\r
- CHAR cServ[256];\r
- CHAR *ip;\r
- \r
- /* setup winsock */\r
- WSADATA wsaData;\r
-\r
- /* check for winsock 2 */\r
- if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0) {\r
-#ifdef DBG\r
- _tprintf(_T("WSAStartup failed.\n"));\r
-#endif /* DBG */\r
- exit(1);\r
- }\r
- \r
- SetupTimingMethod();\r
- \r
- /* setup target info */\r
- ResolveHostname();\r
-\r
- /* print standard tracing info to screen */\r
- _tprintf(_T("\nTracing route to %s [%s]\n"), cHostname, cDestIP);\r
- _tprintf(_T("over a maximum of %d hop"), iMaxHops);\r
- iMaxHops > 1 ? _tprintf(_T("s:\n\n")) : _tprintf(_T(":\n\n"));\r
-\r
- /* run until we hit either max hops, or we recieve 3 echo replys */\r
- while ((iHopCount <= iMaxHops) && (bFoundTarget != TRUE)) {\r
- _tprintf(_T("%3d "), iHopCount);\r
- /* run 3 pings for each hop */\r
- for (i=0; i<3; i++) {\r
- if (Setup(iTTL) != TRUE) {\r
-#ifdef DBG\r
- _tprintf(_T("error in Setup()\n"));\r
-#endif /* DBG */\r
- WSACleanup();\r
- exit(1);\r
- }\r
- PreparePacket(iPacketSize, iSeqNum);\r
- if (SendPacket(iPacketSize) != SOCKET_ERROR) {\r
- /* loop until we get a good packet */\r
- bAwaitPacket = TRUE;\r
- while (bAwaitPacket) {\r
- /* Receive replies until we either get a successful\r
- * read, or a fatal error occurs. */\r
- if ((iRecieveReturn = ReceivePacket(iPacketSize)) < 0) {\r
- /* check the sequence number in the packet\r
- * if it's bad, complain and wait for another packet\r
- * , otherwise break */\r
- wHeaderLen = recvpacket.h_len * 4;\r
- icmphdr = (ECHO_REPLY_HEADER *)((char*)&recvpacket + wHeaderLen);\r
- if (icmphdr->icmpheader.seq != iSeqNum) {\r
- _tprintf(_T("bad sequence number!\n"));\r
- continue;\r
- } else {\r
- break;\r
- }\r
- }\r
- \r
- /* if RecievePacket timed out we don't bother decoding */\r
- if (iRecieveReturn != 1) {\r
- iDecRes = DecodeResponse(iPacketSize, iSeqNum);\r
- \r
- switch (iDecRes) {\r
- case 0 : bAwaitPacket = FALSE; /* time exceeded */\r
- break;\r
- case 1 : bAwaitPacket = FALSE; /* echo reply */\r
- break; \r
- case 2 : bAwaitPacket = FALSE; /* destination unreachable */\r
- break; \r
-#ifdef DBG \r
- case -1 :\r
- _tprintf(_T("recieved foreign packet\n")); \r
- break;\r
- case -2 : \r
- _tprintf(_T("error in DecodeResponse\n")); \r
- break;\r
- case -3 : \r
- _tprintf(_T("unknown ICMP packet\n")); \r
- break;\r
-#endif /* DBG */\r
- default : break;\r
- }\r
- } else {\r
- /* packet timed out. Don't wait for it again */\r
- bAwaitPacket = FALSE;\r
- }\r
- } \r
- }\r
-\r
- iSeqNum++;\r
- _tprintf(_T(" "));\r
- }\r
-\r
- if(bResolveAddresses) {\r
- /* gethostbyaddr() and getnameinfo() are \r
- * unimplemented in ROS at present.\r
- * Alex has advised he will be implementing gethostbyaddr\r
- * but as it's depricieted and getnameinfo is much nicer,\r
- * I've used that for the time being for testing in Windows*/\r
- \r
- //ip = inet_addr(inet_ntoa(source.sin_addr));\r
- //host = gethostbyaddr((char *)&ip, 4, 0);\r
- \r
- ip = inet_ntoa(source.sin_addr);\r
-\r
- iNameInfoRet = getnameinfo((SOCKADDR *)&source,\r
- sizeof(SOCKADDR),\r
- cHost,\r
- 256,\r
- cServ,\r
- 256,\r
- NI_NUMERICSERV);\r
- if (iNameInfoRet == 0) {\r
- /* if IP address resolved to a hostname,\r
- * print the IP address after it */ \r
- if (lstrcmpA(cHost, ip) != 0) {\r
- _tprintf(_T("%s [%s]"), cHost, ip);\r
- } else {\r
- _tprintf(_T("%s"), cHost);\r
- }\r
- } else {\r
- _tprintf(_T("error: %d"), WSAGetLastError()); \r
-#ifdef DBG\r
- _tprintf(_T(" getnameinfo failed: %d"), iNameInfoRet);\r
-#endif /* DBG */ \r
- }\r
-\r
- } else {\r
- _tprintf(_T("%s"), inet_ntoa(source.sin_addr));\r
- }\r
- _tprintf(_T("\n"));\r
-\r
- /* check if we've arrived at the target */\r
- if (strcmp(cDestIP, inet_ntoa(source.sin_addr)) == 0) {\r
- bFoundTarget = TRUE;\r
- } else {\r
- iTTL++;\r
- iHopCount++;\r
- Sleep(500);\r
- }\r
- }\r
- _tprintf(_T("\nTrace complete.\n"));\r
- WSACleanup();\r
- \r
- return 0;\r
-}\r
-\r
-/*\r
- * Establish if performance counters are available and\r
- * set up timing figures in relation to processor frequency.\r
- * If performance counters are not available, we'll be using \r
- * gettickcount, so set the figures to 1\r
- *\r
- */\r
-VOID SetupTimingMethod(VOID)\r
-{\r
- LARGE_INTEGER PerformanceCounterFrequency;\r
- \r
- /* check if performance counters are available */\r
- bUsePerformanceCounter = QueryPerformanceFrequency(&PerformanceCounterFrequency);\r
- if (bUsePerformanceCounter) {\r
- /* restrict execution to first processor on SMP systems */\r
- if (SetThreadAffinityMask(GetCurrentThread(), 1) == 0) {\r
- bUsePerformanceCounter = FALSE;\r
- }\r
- \r
- TicksPerMs.QuadPart = PerformanceCounterFrequency.QuadPart / 1000;\r
- TicksPerUs.QuadPart = PerformanceCounterFrequency.QuadPart / 1000000;\r
- }\r
- \r
- if (!bUsePerformanceCounter) {\r
- TicksPerMs.QuadPart = 1;\r
- TicksPerUs.QuadPart = 1;\r
- } \r
-}\r
-\r
-\r
-/*\r
- *\r
- * Check for a hostname or dotted deciamal for our target.\r
- * If we have a hostname, resolve to an IP and store it, else\r
- * just store the target IP address. Also set up other key \r
- * SOCKADDR_IN members needed for the connection.\r
- *\r
- */\r
-VOID ResolveHostname(VOID)\r
-{\r
- HOSTENT *hp;\r
- ULONG addr;\r
- \r
- memset(&dest, 0, sizeof(dest));\r
-\r
- addr = inet_addr(cHostname);\r
- /* if address is not a dotted decimal */\r
- if (addr == INADDR_NONE) {\r
- hp = gethostbyname(cHostname);\r
- if (hp != 0) {\r
- memcpy(&dest.sin_addr, hp->h_addr, hp->h_length);\r
- //dest.sin_addr = *((struct in_addr *)hp->h_addr);\r
- dest.sin_family = hp->h_addrtype;\r
- } else {\r
- _tprintf(_T("Unable to resolve target system name %s.\n"), cHostname);\r
- WSACleanup();\r
- exit(1);\r
- }\r
- } else {\r
- dest.sin_addr.s_addr = addr;\r
- dest.sin_family = AF_INET;\r
- }\r
- /* copy destination IP address into a string */\r
- strcpy(cDestIP, inet_ntoa(dest.sin_addr)); \r
-}\r
-\r
-\r
-\r
-/*\r
- *\r
- * Create our socket which will be used for sending and recieving,\r
- * Socket Type is raw, Protocol is ICMP. Also set the TTL value which will be\r
- * set in the outgoing IP packet.\r
- *\r
- */\r
-INT Setup(INT iTTL)\r
-{\r
- INT iSockRet;\r
-\r
- /* create raw socket */\r
- icmpSock = WSASocket(AF_INET, SOCK_RAW, IPPROTO_ICMP, 0, 0, 0);\r
- if (icmpSock == INVALID_SOCKET) {\r
- _tprintf(_T("Could not create socket : %d.\n"), WSAGetLastError());\r
- if (WSAGetLastError() == WSAEACCES) {\r
- _tprintf(_T("\n\nYou must be an administrator to run this program!\n\n"));\r
- WSACleanup();\r
- exit(1);\r
- }\r
- return FALSE;\r
- }\r
- \r
- /* setup for TTL */\r
- iSockRet = setsockopt(icmpSock, IPPROTO_IP, IP_TTL, (const char *)&iTTL, sizeof(iTTL));\r
- if (iSockRet == SOCKET_ERROR) {\r
- _tprintf(_T("TTL setsockopt failed : %d. \n"), WSAGetLastError());\r
- return FALSE;\r
- }\r
- \r
- return TRUE;\r
-}\r
-\r
-\r
-\r
-/*\r
- * Prepare the ICMP echo request packet for sending.\r
- * Calculate the packet checksum\r
- *\r
- */\r
-VOID PreparePacket(INT iPacketSize, INT iSeqNum) \r
-{\r
- /* assemble ICMP echo request packet */\r
- sendpacket.icmpheader.type = ECHO_REQUEST;\r
- sendpacket.icmpheader.code = 0;\r
- sendpacket.icmpheader.checksum = 0;\r
- sendpacket.icmpheader.id = (USHORT)GetCurrentProcessId();\r
- sendpacket.icmpheader.seq = iSeqNum;\r
-\r
- /* calculate checksum of packet */\r
- sendpacket.icmpheader.checksum = CheckSum((PUSHORT)&sendpacket, sizeof(ICMP_HEADER) + iPacketSize);\r
-}\r
-\r
-\r
-\r
-/*\r
- *\r
- * Get the system time and send the ICMP packet to the destination\r
- * address.\r
- *\r
- */\r
-INT SendPacket(INT datasize)\r
-{\r
- INT iSockRet;\r
- INT iPacketSize;\r
- \r
- iPacketSize = sizeof(ECHO_REPLY_HEADER) + datasize;\r
-\r
-#ifdef DBG\r
- _tprintf(_T("\nsending packet of %d bytes\n"), iPacketSize);\r
-#endif /* DBG */\r
-\r
- /* get time packet was sent */\r
- lTimeStart = GetTime();\r
-\r
- iSockRet = sendto(icmpSock, //socket\r
- (char *)&sendpacket, //buffer\r
- iPacketSize, //size of buffer\r
- 0, //flags\r
- (SOCKADDR *)&dest, //destination\r
- sizeof(dest)); //address length\r
- \r
- if (iSockRet == SOCKET_ERROR) {\r
- if (WSAGetLastError() == WSAEACCES) {\r
- _tprintf(_T("\n\nYou must be an administrator to run this program!\n\n"));\r
- exit(1);\r
- WSACleanup();\r
- } else {\r
-#ifdef DBG\r
- _tprintf(_T("sendto failed %d\n"), WSAGetLastError());\r
-#endif /* DBG */ \r
- return FALSE;\r
- }\r
- }\r
-#ifdef DBG\r
- _tprintf(_T("sent %d bytes\n"), iSockRet);\r
-#endif /* DBG */\r
-\r
- /* return number of bytes sent */\r
- return iSockRet;\r
-}\r
-\r
-\r
-\r
-/*\r
- *\r
- * Set up a timeout value and put the socket in a select poll.\r
- * Wait until we recieve an IPv4 reply packet in reply to the ICMP \r
- * echo request packet and get the time the packet was recieved.\r
- * If we don't recieve a packet, do some checking to establish why.\r
- *\r
- */\r
-INT ReceivePacket(INT datasize)\r
-{\r
- TIMEVAL timeVal;\r
- FD_SET readFDS;\r
- int iSockRet = 0, iSelRet;\r
- int iFromLen;\r
- int iPacketSize;\r
-\r
- /* allow for a larger recv buffer to store ICMP TTL\r
- * exceed, IP header and orginal ICMP request */\r
- iPacketSize = MAX_REC_SIZE + datasize; \r
-\r
- iFromLen = sizeof(source);\r
-\r
-#ifdef DBG\r
- _tprintf(_T("receiving packet. Available buffer, %d bytes\n"), iPacketSize);\r
-#endif /* DBG */\r
-\r
- /* monitor icmpSock for incomming connections */\r
- FD_ZERO(&readFDS);\r
- FD_SET(icmpSock, &readFDS);\r
- \r
- /* set timeout values */\r
- timeVal.tv_sec = iTimeOut / 1000;\r
- timeVal.tv_usec = iTimeOut % 1000;\r
- \r
- iSelRet = select(0, &readFDS, NULL, NULL, &timeVal);\r
- \r
- if ((iSelRet != SOCKET_ERROR) && (iSelRet != 0)) {\r
- iSockRet = recvfrom(icmpSock, //socket\r
- (char *)&recvpacket, //buffer\r
- iPacketSize, //size of buffer\r
- 0, //flags\r
- (SOCKADDR *)&source, //source address\r
- &iFromLen); //pointer to address length\r
- /* get time packet was recieved */\r
- lTimeEnd = GetTime(); \r
- /* if socket timed out */ \r
- } else if (iSelRet == 0) {\r
- _tprintf(_T(" * "));\r
- return 1;\r
- } else if (iSelRet == SOCKET_ERROR) {\r
- _tprintf(_T("select() failed in sendPacket() %d\n"), WSAGetLastError());\r
- return -1;\r
- }\r
-\r
- \r
- if (iSockRet == SOCKET_ERROR) {\r
- _tprintf(_T("recvfrom failed: %d\n"), WSAGetLastError());\r
- return -2;\r
- }\r
-#ifdef DBG\r
- else {\r
- _tprintf(_T("reveived %d bytes\n"), iSockRet);\r
- }\r
-#endif /* DBG */\r
-\r
- return 0;\r
-}\r
-\r
-\r
-\r
-/*\r
- *\r
- * Cast the IPv4 packet to an echo reply and to a TTL exceed.\r
- * Check the 'type' field to establish what was recieved, and \r
- * ensure the packet is related to the originating process.\r
- * It all is well, print the time taken for the round trip.\r
- *\r
- */\r
-INT DecodeResponse(INT iPacketSize, INT iSeqNum)\r
-{\r
- unsigned short header_len = recvpacket.h_len * 4;\r
- /* cast the recieved packet into an ECHO reply and a TTL Exceed so we can check the ID*/\r
- ECHO_REPLY_HEADER *IcmpHdr = (ECHO_REPLY_HEADER *)((char*)&recvpacket + header_len);\r
- TTL_EXCEED_HEADER *TTLExceedHdr = (TTL_EXCEED_HEADER *)((char *)&recvpacket + header_len);\r
-\r
- /* Make sure the reply is ok */\r
- if (iPacketSize < header_len + ICMP_MIN_SIZE) {\r
- _tprintf(_T("too few bytes from %s\n"), inet_ntoa(dest.sin_addr));\r
- return -2;\r
- } \r
- \r
- switch (IcmpHdr->icmpheader.type) {\r
- case TTL_EXCEEDED :\r
- if (TTLExceedHdr->OrigIcmpHeader.id != (USHORT)GetCurrentProcessId()) {\r
- /* FIXME */\r
- /* we've picked up a packet not related to this process\r
- * probably from another local program. We ignore it */\r
-#ifdef DGB\r
- _tprintf(_T("header id, process id %d"), TTLExceedHdr->OrigIcmpHeader.id, GetCurrentProcessId());\r
-#endif /* DBG */\r
- //_tprintf(_T("oops ");\r
- return -1;\r
- }\r
- _tprintf(_T("%3Ld ms"), (lTimeEnd - lTimeStart) / TicksPerMs.QuadPart);\r
- return 0;\r
- case ECHO_REPLY :\r
- if (IcmpHdr->icmpheader.id != (USHORT)GetCurrentProcessId()) {\r
- /* FIXME */\r
- /* we've picked up a packet not related to this process\r
- * probably from another local program. We ignore it */\r
-#ifdef DGB\r
- _tprintf(_T("\nPicked up wrong packet. icmpheader.id = %d and process id = %d"), IcmpHdr->icmpheader.id, GetCurrentProcessId());\r
-#endif /* DBG */\r
- //_tprintf(_T("oops ");\r
- return -1;\r
- }\r
- _tprintf(_T("%3Ld ms"), (lTimeEnd - lTimeStart) / TicksPerMs.QuadPart);\r
- return 1;\r
- case DEST_UNREACHABLE :\r
- _tprintf(_T(" * "));\r
- return 2;\r
- default :\r
- /* unknown ICMP packet */\r
- return -3;\r
- } \r
-}\r
-\r
-\r
-/*\r
- *\r
- * Get the system time using preformance counters if available,\r
- * otherwise fall back to GetTickCount()\r
- *\r
- */\r
-\r
-LONG GetTime(VOID) \r
-{\r
- LARGE_INTEGER Time;\r
- \r
- if (bUsePerformanceCounter) {\r
- if (QueryPerformanceCounter(&Time) == 0) {\r
- Time.u.LowPart = (DWORD)GetTickCount();\r
- Time.u.HighPart = 0;\r
- return (LONGLONG)Time.u.LowPart;\r
- } \r
- } else {\r
- Time.u.LowPart = (DWORD)GetTickCount();\r
- Time.u.HighPart = 0;\r
- return (LONGLONG)Time.u.LowPart;\r
- }\r
- return Time.QuadPart;\r
-}\r
-\r
-\r
-/*\r
- *\r
- * Calculate packet checksum.\r
- *\r
- */\r
-WORD CheckSum(PUSHORT data, UINT size)\r
-{\r
- DWORD dwSum = 0;\r
-\r
- while (size > 1) {\r
- dwSum += *data++;\r
- size -= sizeof(USHORT);\r
- }\r
-\r
- if (size)\r
- dwSum += *(UCHAR*)data;\r
-\r
- dwSum = (dwSum >> 16) + (dwSum & 0xFFFF);\r
- dwSum += (dwSum >> 16);\r
-\r
- return (USHORT)(~dwSum);\r
-}\r
-\r
-\r
-/*\r
- *\r
- * print program usage to screen\r
- *\r
- */\r
-VOID Usage(VOID)\r
-{\r
- _tprintf(_T("\nUsage: tracert [-d] [-h maximum_hops] [-j host-list] [-w timeout] target_name\n\n"));\r
- _tprintf(_T("Options:\n"));\r
- _tprintf(_T(" -d Do not resolve addresses to hostnames.\n"));\r
- _tprintf(_T(" -h maximum_hops Maximum number of hops to search for target.\n"));\r
- _tprintf(_T(" -j host-list Loose source route along host-list.\n"));\r
- _tprintf(_T(" -w timeout Wait timeout milliseconds for each reply.\n\n"));\r
- \r
- /* temp notes to stop user questions until getnameinfo/gethostbyaddr and getsockopt are implemented */\r
- _tprintf(_T("NOTES\n-----\n"\r
- "- Setting TTL values is not currently supported in ReactOS, so the trace will\n"\r
- " jump straight to the destination. This feature will be implemented soon.\n"\r
- "- Host info is not currently available in ReactOS and will fail with strange\n"\r
- " results. Use -d to force it not to resolve IP's.\n"\r
- "- For testing purposes, all should work as normal in a Windows environment\n\n"));\r
-}\r
-\r
-\r
-\r
-/*\r
- *\r
- * Program entry point\r
- *\r
- */\r
-int main(int argc, char* argv[])\r
-{\r
- if (!ParseCmdline(argc, _argv)) return -1;\r
-\r
- Driver();\r
-\r
- return 0;\r
-}\r
+/*
+ * ReactOS Win32 Applications
+ * Copyright (C) 2005 ReactOS Team
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/*
+ * COPYRIGHT: See COPYING in the top level directory
+ * PROJECT: ReactOS traceroute utility
+ * FILE: apps/utils/net/tracert/tracert.c
+ * PURPOSE: trace a packets route through a network
+ * PROGRAMMERS: Ged Murphy (gedmurphy@gmail.com)
+ * REVISIONS:
+ * GM 03/05/05 Created
+ *
+ */
+
+
+#include <winsock2.h>
+#include <tchar.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <ws2tcpip.h>
+#include <string.h>
+#include <time.h>
+#include "tracert.h"
+
+#define WIN32_LEAN_AND_MEAN
+
+#ifdef DBG
+#undef DBG
+#endif
+
+/*
+ * globals
+ */
+SOCKET icmpSock; // socket descriptor
+SOCKADDR_IN source, dest; // source and destination address info
+ECHO_REPLY_HEADER sendpacket; // ICMP echo packet
+IPv4_HEADER recvpacket; // return reveive packet
+
+BOOL bUsePerformanceCounter; // whether to use the high res performance counter
+LARGE_INTEGER TicksPerMs; // number of millisecs in relation to proc freq
+LARGE_INTEGER TicksPerUs; // number of microsecs in relation to proc freq
+LONGLONG lTimeStart; // send packet, timer start
+LONGLONG lTimeEnd; // receive packet, timer end
+
+CHAR cHostname[256]; // target hostname
+CHAR cDestIP[18]; // target IP
+
+
+/*
+ * command line options
+ */
+BOOL bResolveAddresses = TRUE; // -d MS ping defaults to true.
+INT iMaxHops = 30; // -h Max number of hops before trace ends
+INT iHostList; // -j @UNIMPLEMENTED@
+INT iTimeOut = 2000; // -w time before packet times out
+
+
+/*
+ *
+ * Parse command line parameters and set any options
+ *
+ */
+static BOOL ParseCmdline(int argc, char* argv[])
+{
+ int i;
+
+ if (argc < 2)
+ {
+ Usage();
+ return FALSE;
+ }
+
+ for (i = 1; i < argc; i++)
+ {
+ if (argv[i][0] == '-')
+ {
+ switch (argv[i][1])
+ {
+ case 'd': bResolveAddresses = FALSE;
+ break;
+ case 'h': sscanf(argv[i+1], "%d", &iMaxHops);
+ break;
+ case 'j': break; /* @unimplemented@ */
+ case 'w': sscanf(argv[i+1], "%d", &iTimeOut);
+ break;
+ default:
+ _tprintf(_T("%s is not a valid option.\n"), argv[i]);
+ Usage();
+ return FALSE;
+ }
+ }
+ else
+ /* copy target address */
+ strncpy(cHostname, argv[i], 255);
+ }
+
+ return TRUE;
+}
+
+
+
+/*
+ *
+ * Driver function, controls the traceroute program
+ *
+ */
+static INT Driver(VOID)
+{
+
+ INT iHopCount = 1; // hop counter. default max is 30
+ USHORT iSeqNum = 0; // initialise packet sequence number
+ INT iTTL = 1; // set initial packet TTL to 1
+ BOOL bFoundTarget = FALSE; // Have we reached our destination yet
+ BOOL bAwaitPacket; // indicates whether we have recieved a good packet
+ INT iDecRes; // DecodeResponse return value
+ INT iRecieveReturn; // RecieveReturn return value
+ INT iNameInfoRet; // getnameinfo return value
+ INT iPacketSize = PACKET_SIZE; // packet size
+ WORD wHeaderLen; // header length
+ PECHO_REPLY_HEADER icmphdr;
+
+
+ //temps for getting host name
+ CHAR cHost[256];
+ CHAR cServ[256];
+ CHAR *ip;
+
+ /* setup winsock */
+ WSADATA wsaData;
+
+ /* check for winsock 2 */
+ if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0)
+ {
+#ifdef DBG
+ _tprintf(_T("WSAStartup failed.\n"));
+#endif /* DBG */
+ exit(1);
+ }
+
+ /* establish what timing method we can use */
+ SetupTimingMethod();
+
+ /* setup target info */
+ ResolveHostname();
+
+ /* print standard tracing info to screen */
+ _tprintf(_T("\nTracing route to %s [%s]\n"), cHostname, cDestIP);
+ _tprintf(_T("over a maximum of %d hop"), iMaxHops);
+ iMaxHops > 1 ? _tprintf(_T("s:\n\n")) : _tprintf(_T(":\n\n"));
+
+ /* run until we hit either max hops, or we recieve 3 echo replys */
+ while ((iHopCount <= iMaxHops) && (bFoundTarget != TRUE))
+ {
+ INT i;
+
+ _tprintf(_T("%3d "), iHopCount);
+ /* run 3 pings for each hop */
+ for (i=0; i<3; i++)
+ {
+ if (Setup(iTTL) != TRUE)
+ {
+#ifdef DBG
+ _tprintf(_T("error in Setup()\n"));
+#endif /* DBG */
+ WSACleanup();
+ exit(1);
+ }
+ PreparePacket(iPacketSize, iSeqNum);
+ if (SendPacket(iPacketSize) != SOCKET_ERROR)
+ {
+ /* loop until we get a good packet */
+ bAwaitPacket = TRUE;
+ while (bAwaitPacket)
+ {
+ /* Receive replies until we either get a successful
+ * read, or a fatal error occurs. */
+ if ((iRecieveReturn = ReceivePacket(iPacketSize)) < 0)
+ {
+ /* check the sequence number in the packet
+ * if it's bad, complain and wait for another packet
+ * , otherwise break */
+ wHeaderLen = recvpacket.h_len * 4;
+ icmphdr = (ECHO_REPLY_HEADER *)((char*)&recvpacket + wHeaderLen);
+ if (icmphdr->icmpheader.seq != iSeqNum)
+ {
+ _tprintf(_T("bad sequence number!\n"));
+ continue;
+ }
+ else
+ break;
+ }
+
+ /* if RecievePacket timed out we don't bother decoding */
+ if (iRecieveReturn != 1)
+ {
+ iDecRes = DecodeResponse(iPacketSize, iSeqNum);
+
+ switch (iDecRes)
+ {
+ case 0 : bAwaitPacket = FALSE; /* time exceeded */
+ break;
+ case 1 : bAwaitPacket = FALSE; /* echo reply */
+ break;
+ case 2 : bAwaitPacket = FALSE; /* destination unreachable */
+ break;
+#ifdef DBG
+ case -1 :
+ _tprintf(_T("recieved foreign packet\n"));
+ break;
+ case -2 :
+ _tprintf(_T("error in DecodeResponse\n"));
+ break;
+ case -3 :
+ _tprintf(_T("unknown ICMP packet\n"));
+ break;
+#endif /* DBG */
+ default : break;
+ }
+ }
+ else
+ /* packet timed out. Don't wait for it again */
+ bAwaitPacket = FALSE;
+ }
+ }
+
+ iSeqNum++;
+ _tprintf(_T(" "));
+ }
+
+ if(bResolveAddresses)
+ {
+ /* gethostbyaddr() and getnameinfo() are
+ * unimplemented in ROS at present.
+ * Alex has advised he will be implementing getnameinfo.
+ * I've used that for the time being for testing in Windows*/
+
+ //ip = inet_addr(inet_ntoa(source.sin_addr));
+ //host = gethostbyaddr((char *)&ip, 4, 0);
+
+ ip = inet_ntoa(source.sin_addr);
+
+ iNameInfoRet = getnameinfo((SOCKADDR *)&source,
+ sizeof(SOCKADDR),
+ cHost,
+ 256,
+ cServ,
+ 256,
+ NI_NUMERICSERV);
+ if (iNameInfoRet == 0)
+ {
+ /* if IP address resolved to a hostname,
+ * print the IP address after it */
+ if (lstrcmpA(cHost, ip) != 0)
+ _tprintf(_T("%s [%s]"), cHost, ip);
+ else
+ _tprintf(_T("%s"), cHost);
+ }
+ else
+ {
+ _tprintf(_T("error: %d"), WSAGetLastError());
+#ifdef DBG
+ _tprintf(_T(" getnameinfo failed: %d"), iNameInfoRet);
+#endif /* DBG */
+ }
+
+ }
+ else
+ _tprintf(_T("%s"), inet_ntoa(source.sin_addr));
+
+ _tprintf(_T("\n"));
+
+ /* check if we've arrived at the target */
+ if (strcmp(cDestIP, inet_ntoa(source.sin_addr)) == 0)
+ bFoundTarget = TRUE;
+ else
+ {
+ iTTL++;
+ iHopCount++;
+ Sleep(500);
+ }
+ }
+ _tprintf(_T("\nTrace complete.\n"));
+ WSACleanup();
+
+ return 0;
+}
+
+
+/*
+ * Establish if performance counters are available and
+ * set up timing figures in relation to processor frequency.
+ * If performance counters are not available, we'll be using
+ * gettickcount, so set the figures to 1
+ *
+ */
+static VOID SetupTimingMethod(VOID)
+{
+ LARGE_INTEGER PerformanceCounterFrequency;
+
+ /* check if performance counters are available */
+ bUsePerformanceCounter = QueryPerformanceFrequency(&PerformanceCounterFrequency);
+ if (bUsePerformanceCounter)
+ {
+ /* restrict execution to first processor on SMP systems */
+ if (SetThreadAffinityMask(GetCurrentThread(), 1) == 0)
+ bUsePerformanceCounter = FALSE;
+
+ TicksPerMs.QuadPart = PerformanceCounterFrequency.QuadPart / 1000;
+ TicksPerUs.QuadPart = PerformanceCounterFrequency.QuadPart / 1000000;
+ }
+
+ if (!bUsePerformanceCounter)
+ {
+ TicksPerMs.QuadPart = 1;
+ TicksPerUs.QuadPart = 1;
+ }
+}
+
+
+/*
+ *
+ * Check for a hostname or dotted deciamal for our target.
+ * If we have a hostname, resolve to an IP and store it, else
+ * just store the target IP address. Also set up other key
+ * SOCKADDR_IN members needed for the connection.
+ *
+ */
+static VOID ResolveHostname(VOID)
+{
+ HOSTENT *hp;
+ ULONG addr;
+
+ memset(&dest, 0, sizeof(dest));
+
+ addr = inet_addr(cHostname);
+ /* if address is not a dotted decimal */
+ if (addr == INADDR_NONE)
+ {
+ hp = gethostbyname(cHostname);
+ if (hp != 0)
+ {
+ memcpy(&dest.sin_addr, hp->h_addr, hp->h_length);
+ //dest.sin_addr = *((struct in_addr *)hp->h_addr);
+ dest.sin_family = hp->h_addrtype;
+ }
+ else
+ {
+ _tprintf(_T("Unable to resolve target system name %s.\n"), cHostname);
+ WSACleanup();
+ exit(1);
+ }
+ }
+ else
+ {
+ dest.sin_addr.s_addr = addr;
+ dest.sin_family = AF_INET;
+ }
+ /* copy destination IP address into a string */
+ strcpy(cDestIP, inet_ntoa(dest.sin_addr));
+}
+
+
+
+/*
+ *
+ * Create our socket which will be used for sending and recieving,
+ * Socket Type is raw, Protocol is ICMP. Also set the TTL value which will be
+ * set in the outgoing IP packet.
+ *
+ */
+static INT Setup(INT iTTL)
+{
+ INT iSockRet;
+
+ /* create raw socket */
+ icmpSock = WSASocket(AF_INET, SOCK_RAW, IPPROTO_ICMP, 0, 0, 0);
+ if (icmpSock == INVALID_SOCKET)
+ {
+ _tprintf(_T("Could not create socket : %d.\n"), WSAGetLastError());
+ if (WSAGetLastError() == WSAEACCES)
+ {
+ _tprintf(_T("\n\nYou must be an administrator to run this program!\n\n"));
+ WSACleanup();
+ exit(1);
+ }
+ return FALSE;
+ }
+
+ /* setup for TTL */
+ iSockRet = setsockopt(icmpSock, IPPROTO_IP, IP_TTL, (const char *)&iTTL, sizeof(iTTL));
+ if (iSockRet == SOCKET_ERROR)
+ {
+ _tprintf(_T("TTL setsockopt failed : %d. \n"), WSAGetLastError());
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+
+
+/*
+ * Prepare the ICMP echo request packet for sending.
+ * Calculate the packet checksum
+ *
+ */
+static VOID PreparePacket(INT iPacketSize, USHORT iSeqNum)
+{
+ /* assemble ICMP echo request packet */
+ sendpacket.icmpheader.type = ECHO_REQUEST;
+ sendpacket.icmpheader.code = 0;
+ sendpacket.icmpheader.checksum = 0;
+ sendpacket.icmpheader.id = (USHORT)GetCurrentProcessId();
+ sendpacket.icmpheader.seq = iSeqNum;
+
+ /* calculate checksum of packet */
+ sendpacket.icmpheader.checksum = CheckSum((PUSHORT)&sendpacket, sizeof(ICMP_HEADER) + iPacketSize);
+}
+
+
+
+/*
+ *
+ * Get the system time and send the ICMP packet to the destination
+ * address.
+ *
+ */
+static INT SendPacket(INT datasize)
+{
+ INT iSockRet;
+ INT iPacketSize;
+
+ iPacketSize = sizeof(ECHO_REPLY_HEADER) + datasize;
+
+#ifdef DBG
+ _tprintf(_T("\nsending packet of %d bytes\n"), iPacketSize);
+#endif /* DBG */
+
+ /* get time packet was sent */
+ lTimeStart = GetTime();
+
+ iSockRet = sendto(icmpSock, //socket
+ (char *)&sendpacket, //buffer
+ iPacketSize, //size of buffer
+ 0, //flags
+ (SOCKADDR *)&dest, //destination
+ sizeof(dest)); //address length
+
+ if (iSockRet == SOCKET_ERROR)
+ {
+ if (WSAGetLastError() == WSAEACCES)
+ {
+ _tprintf(_T("\n\nYou must be an administrator to run this program!\n\n"));
+ WSACleanup();
+ exit(1);
+ }
+ else
+ {
+#ifdef DBG
+ _tprintf(_T("sendto failed %d\n"), WSAGetLastError());
+#endif /* DBG */
+ return FALSE;
+ }
+ }
+#ifdef DBG
+ _tprintf(_T("sent %d bytes\n"), iSockRet);
+#endif /* DBG */
+
+ /* return number of bytes sent */
+ return iSockRet;
+}
+
+
+
+/*
+ *
+ * Set up a timeout value and put the socket in a select poll.
+ * Wait until we recieve an IPv4 reply packet in reply to the ICMP
+ * echo request packet and get the time the packet was recieved.
+ * If we don't recieve a packet, do some checking to establish why.
+ *
+ */
+static INT ReceivePacket(INT datasize)
+{
+ TIMEVAL timeVal;
+ FD_SET readFDS;
+ int iSockRet = 0, iSelRet;
+ int iFromLen;
+ int iPacketSize;
+
+ /* allow for a larger recv buffer to store ICMP TTL
+ * exceed, IP header and orginal ICMP request */
+ iPacketSize = MAX_REC_SIZE + datasize;
+
+ iFromLen = sizeof(source);
+
+#ifdef DBG
+ _tprintf(_T("receiving packet. Available buffer, %d bytes\n"), iPacketSize);
+#endif /* DBG */
+
+ /* monitor icmpSock for incomming connections */
+ FD_ZERO(&readFDS);
+ FD_SET(icmpSock, &readFDS);
+
+ /* set timeout values */
+ timeVal.tv_sec = iTimeOut / 1000;
+ timeVal.tv_usec = iTimeOut % 1000;
+
+ iSelRet = select(0, &readFDS, NULL, NULL, &timeVal);
+
+ if ((iSelRet != SOCKET_ERROR) && (iSelRet != 0))
+ {
+ iSockRet = recvfrom(icmpSock, //socket
+ (char *)&recvpacket, //buffer
+ iPacketSize, //size of buffer
+ 0, //flags
+ (SOCKADDR *)&source, //source address
+ &iFromLen); //pointer to address length
+ /* get time packet was recieved */
+ lTimeEnd = GetTime();
+ /* if socket timed out */
+ }
+ else if (iSelRet == 0)
+ {
+ _tprintf(_T(" * "));
+ return 1;
+ }
+ else if (iSelRet == SOCKET_ERROR)
+ {
+ _tprintf(_T("select() failed in sendPacket() %d\n"), WSAGetLastError());
+ return -1;
+ }
+
+
+ if (iSockRet == SOCKET_ERROR)
+ {
+ _tprintf(_T("recvfrom failed: %d\n"), WSAGetLastError());
+ return -2;
+ }
+#ifdef DBG
+ else
+ _tprintf(_T("reveived %d bytes\n"), iSockRet);
+#endif /* DBG */
+
+ return 0;
+}
+
+
+
+/*
+ *
+ * Cast the IPv4 packet to an echo reply and to a TTL exceed.
+ * Check the 'type' field to establish what was recieved, and
+ * ensure the packet is related to the originating process.
+ * It all is well, print the time taken for the round trip.
+ *
+ */
+static INT DecodeResponse(INT iPacketSize, USHORT iSeqNum)
+{
+ unsigned short header_len = recvpacket.h_len * 4;
+ /* cast the recieved packet into an ECHO reply and a TTL Exceed so we can check the ID*/
+ ECHO_REPLY_HEADER *IcmpHdr = (ECHO_REPLY_HEADER *)((char*)&recvpacket + header_len);
+ TTL_EXCEED_HEADER *TTLExceedHdr = (TTL_EXCEED_HEADER *)((char *)&recvpacket + header_len);
+
+ /* Make sure the reply is ok */
+ if (iPacketSize < header_len + ICMP_MIN_SIZE)
+ {
+ _tprintf(_T("too few bytes from %s\n"), inet_ntoa(dest.sin_addr));
+ return -2;
+ }
+
+ switch (IcmpHdr->icmpheader.type)
+ {
+ case TTL_EXCEEDED :
+ if (TTLExceedHdr->OrigIcmpHeader.id != (USHORT)GetCurrentProcessId())
+ {
+ /* FIXME */
+ /* we've picked up a packet not related to this process
+ * probably from another local program. We ignore it */
+#ifdef DGB
+ _tprintf(_T("header id, process id %d"), TTLExceedHdr->OrigIcmpHeader.id, GetCurrentProcessId());
+#endif /* DBG */
+ //_tprintf(_T("oops ");
+ return -1;
+ }
+ _tprintf(_T("%3Ld ms"), (lTimeEnd - lTimeStart) / TicksPerMs.QuadPart);
+ return 0;
+ case ECHO_REPLY :
+ if (IcmpHdr->icmpheader.id != (USHORT)GetCurrentProcessId())
+ {
+ /* FIXME */
+ /* we've picked up a packet not related to this process
+ * probably from another local program. We ignore it */
+#ifdef DGB
+ _tprintf(_T("\nPicked up wrong packet. icmpheader.id = %d and process id = %d"), IcmpHdr->icmpheader.id, GetCurrentProcessId());
+#endif /* DBG */
+ //_tprintf(_T("oops ");
+ return -1;
+ }
+ _tprintf(_T("%3Ld ms"), (lTimeEnd - lTimeStart) / TicksPerMs.QuadPart);
+ return 1;
+ case DEST_UNREACHABLE :
+ _tprintf(_T(" * "));
+ return 2;
+ default :
+ /* unknown ICMP packet */
+ return -3;
+ }
+}
+
+
+/*
+ *
+ * Get the system time using preformance counters if available,
+ * otherwise fall back to GetTickCount()
+ *
+ */
+
+static LONGLONG GetTime(VOID)
+{
+ LARGE_INTEGER Time;
+
+ if (bUsePerformanceCounter)
+ {
+ if (QueryPerformanceCounter(&Time) == 0)
+ {
+ Time.u.LowPart = (DWORD)GetTickCount();
+ Time.u.HighPart = 0;
+ return (LONGLONG)Time.u.LowPart;
+ }
+ }
+ else
+ {
+ Time.u.LowPart = (DWORD)GetTickCount();
+ Time.u.HighPart = 0;
+ return (LONGLONG)Time.u.LowPart;
+ }
+ return Time.QuadPart;
+}
+
+
+/*
+ *
+ * Calculate packet checksum.
+ *
+ */
+static WORD CheckSum(PUSHORT data, UINT size)
+{
+ DWORD dwSum = 0;
+
+ while (size > 1)
+ {
+ dwSum += *data++;
+ size -= sizeof(USHORT);
+ }
+
+ if (size)
+ dwSum += *(UCHAR*)data;
+
+ dwSum = (dwSum >> 16) + (dwSum & 0xFFFF);
+ dwSum += (dwSum >> 16);
+
+ return (USHORT)(~dwSum);
+}
+
+
+/*
+ *
+ * print program usage to screen
+ *
+ */
+static VOID Usage(VOID)
+{
+ _tprintf(_T("\nUsage: tracert [-d] [-h maximum_hops] [-j host-list] [-w timeout] target_name\n\n"
+ "Options:\n"
+ " -d Do not resolve addresses to hostnames.\n"
+ " -h maximum_hops Maximum number of hops to search for target.\n"
+ " -j host-list Loose source route along host-list.\n"
+ " -w timeout Wait timeout milliseconds for each reply.\n\n"));
+
+ /* temp notes to stop user questions until getnameinfo/gethostbyaddr and getsockopt are implemented */
+ _tprintf(_T("NOTES\n-----\n"
+ "- Setting TTL values is not currently supported in ReactOS, so the trace will\n"
+ " jump straight to the destination. This feature will be implemented soon.\n"
+ "- Host info is not currently available in ReactOS and will fail with strange\n"
+ " results. Use -d to force it not to resolve IP's.\n"
+ "- For testing purposes, all should work as normal in a Windows environment\n\n"));
+}
+
+
+
+/*
+ *
+ * Program entry point
+ *
+ */
+int main(int argc, char* argv[])
+{
+ if (!ParseCmdline(argc, argv)) return -1;
+
+ Driver();
+
+ return 0;
+}
projects / reactos.git / blobdiff