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#include "common.h"
#include "icmp.h"
char data[] = "AAAABBBBCCCCDDDDEEEEFFFFGGGGHHH";
#define EXTRA (12)
ICMP *ICMP::instance = 0;
ICMP::ICMP():
timeout(2000),
functions_loaded(false)
{
hDLL = LoadLibrary("IPHLPAPI.DLL");
if(hDLL) {
pIcmpCreateFile = (pfnHV)GetProcAddress(hDLL, "IcmpCreateFile");
pIcmpCloseHandle = (pfnBH)GetProcAddress(hDLL, "IcmpCloseHandle");
pIcmpSendEcho2 = (pfnDHDPWPipPDD)GetProcAddress(hDLL, "IcmpSendEcho2");
}
if (hDLL == 0 || pIcmpCreateFile == 0 || pIcmpCloseHandle == 0 || pIcmpSendEcho2 == 0) {
hDLL = LoadLibrary("ICMP.DLL");
if(hDLL) {
pIcmpCreateFile = (pfnHV)GetProcAddress(hDLL, "IcmpCreateFile");
pIcmpCloseHandle = (pfnBH)GetProcAddress(hDLL, "IcmpCloseHandle");
pIcmpSendEcho2 = (pfnDHDPWPipPDD)GetProcAddress(hDLL, "IcmpSendEcho2");
}
if (hDLL == 0 || pIcmpCreateFile == 0 || pIcmpCloseHandle == 0 || pIcmpSendEcho2 == 0)
return;
else
DBWriteContactSettingString(0, PLUG, "PingLib", "ICMP.DLL"); // for debugging
} else
DBWriteContactSettingString(0, PLUG, "PingLib", "IPHLPAPI.DLL"); // for debugging
WSAData wsaData;
if (WSAStartup(MAKEWORD(1, 1), &wsaData) != 0) {
WSACleanup();
FreeLibrary((HMODULE)hDLL);
return;
}
hIP = pIcmpCreateFile();
if (hIP == INVALID_HANDLE_VALUE) {
pIcmpCloseHandle(hIP);
return;
}
buff = new char[sizeof(ICMP_ECHO_REPLY) + sizeof(data) + EXTRA];
functions_loaded = true;
}
void ICMP::stop() {
if(hIP) {
pIcmpCloseHandle(hIP);
hIP = 0;
}
}
ICMP::~ICMP() {
if(hIP) stop();
WSACleanup();
if(hDLL)
FreeLibrary(hDLL);
delete[] buff;
}
bool ICMP::ping(char *host, ICMP_ECHO_REPLY &reply) {
if(!functions_loaded) return false;
unsigned long address;
HOSTENT *rec;
IP_OPTION_INFORMATION ipoi;
address = inet_addr(host);
if (address == INADDR_NONE) {
rec = gethostbyname(host);
if(rec) address = *(unsigned long *)(*rec->h_addr_list);
else return false;
}
ipoi.Ttl = 255;
ipoi.Tos = 0;
ipoi.Flags = 0;
ipoi.OptionsSize = 0;
ipoi.OptionsData = 0;
reply.Status = 0;
//pIcmpSendEcho2(hIP, 0, 0, 0, address, data, sizeof(data), &ipoi, buff, sizeof(ICMP_ECHO_REPLY) + sizeof(data), timeout);
if(pIcmpSendEcho2(hIP, 0, 0, 0, address, data, sizeof(data), 0, buff, sizeof(ICMP_ECHO_REPLY) + sizeof(data) + EXTRA, timeout) == 0) {
char winmsg[512], msg[1024];
FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, 0, GetLastError(), 0, winmsg, 512, 0);
mir_snprintf(msg, 1024, "Ping error: %s\nICMP_ECHO_REPLY: %d\ndata: %d\ngiven: %d", winmsg, sizeof(ICMP_ECHO_REPLY), sizeof(data), sizeof(ICMP_ECHO_REPLY) + sizeof(data) + EXTRA);
PUShowMessage(msg, SM_NOTIFY);
return false;
}
memcpy(&reply, buff, sizeof(ICMP_ECHO_REPLY));
return (reply.Status == 0);
}
ICMP *ICMP::get_instance() {
if(!instance)
instance = new ICMP();
return instance;
}
void ICMP::cleanup() {
if(instance) delete instance;
}
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