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OpenDHCPServer.cpp
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5801 lines (4952 loc) · 145 KB
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/**************************************************************************
* Copyright (C) 2005 by Achal Dhir *
* achaldhir@gmail.com *
* *
* 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. *
* a *
* 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., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
// Dual Service.cpp
#include <stdio.h>
#include <winsock2.h>
#include <time.h>
#include <tchar.h>
#include <ws2tcpip.h>
#include <limits.h>
#include <iphlpapi.h>
#include <process.h>
#include <math.h>
#include "OpenDHCPServer.h"
//Global Variables
//bool dhcpService = true;
bool kRunning = true;
bool verbatim = false;
SERVICE_STATUS serviceStatus;
SERVICE_STATUS_HANDLE serviceStatusHandle = 0;
HANDLE stopServiceEvent = 0;
//data1 network;
data1 network;
data2 cfig;
data9 token;
data9 dhcpr;
data71 lump;
dhcpMap dhcpCache;
//expiryMap dhcpAge;
char serviceName[] = "OpenDHCPServer";
char displayName[] = "Open DHCP Server";
//char tempbuff[512];
//char extbuff[512];
//char logBuff[512];
char htmlTitle[256] = "";
char filePATH[_MAX_PATH];
char iniFile[_MAX_PATH];
char leaFile[_MAX_PATH];
char logFile[_MAX_PATH];
char htmFile[_MAX_PATH];
char lnkFile[_MAX_PATH];
char tempFile[_MAX_PATH];
char cliFile[_MAX_PATH];
time_t t = time(NULL);
timeval tv;
fd_set readfds;
fd_set writefds;
HANDLE lEvent;
HANDLE fEvent;
HANDLE rEvent;
//constants
const char NBSP = 32;
const char RANGESET[] = "RANGE_SET";
const char GLOBALOPTIONS[] = "GLOBAL_OPTIONS";
const char base64[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
//const char send403[] = "HTTP/1.1 403 Forbidden\r\nDate: %s\r\nLast-Modified: %s\r\nContent-Type: text/html\r\nConnection: close\r\n\r\n";
const char send403[] = "HTTP/1.1 403 Forbidden\r\n\r\n<h1>403 Forbidden</h1>";
const char send404[] = "HTTP/1.1 404 Not Found\r\n\r\n<h1>404 Not Found</h1>";
const char td200[] = "<td>%s</td>";
const char tdnowrap200[] = "<td nowrap>%s</td>";
const char sVersion[] = "Open DHCP Server Version 1.75 Windows Build 1052";
const char htmlStart[] = "<html>\n<head>\n<title>%s</title>\n<meta http-equiv=\"refresh\" content=\"60\">\n<meta http-equiv=\"cache-control\" content=\"no-cache\">\n</head>\n";
//const char bodyStart[] = "<body bgcolor=\"#cccccc\"><table border=\"0\"><tr><td>\n<table width=\"100%%\" border=\"0\"><tr><td colspan=\"2\" align=\"center\"><font size=\"5\"><b>%s</b></font></td></tr><tr><td align=\"left\"><b>Server:</b> %s %s</td><td align=\"right\"><a target=\"_new\" href=\"http://dhcpserver.sourceforge.net\">http://dhcpserver.sourceforge.net</td></tr></table>";
const char bodyStart[] = "<body bgcolor=\"#cccccc\"><table border=\"0\"><tr><td>\n<table width=\"100%%\" border=\"0\"><tr><td nowrap colspan=\"2\" align=\"center\"><font size=\"6\"><b>%s</b></font></td></tr><tr><td align=\"left\"><b>Server:</b> %s %s</td><td align=\"right\"><a target=\"_new\" href=\"http://dhcpserver.sourceforge.net\">http://dhcpserver.sourceforge.net</td></tr></table>";
//const char bodyStart[] = "<body bgcolor=\"#cccccc\"><table width=640><tr><td align=\"center\"><font size=\"5\"><b>%s</b></font></td></tr><tr><td align=\"center\"><font size=\"5\">%s</font></td></tr></table>";
const data4 opData[] =
{
{ "SubnetMask", 1, 3, 1},
{ "TimeOffset", 2, 4, 1},
{ "Router", 3, 3, 1},
{ "TimeServer", 4, 3, 1},
{ "NameServer", 5, 3, 1},
{ "DomainServer", 6, 3, 1},
{ "LogServer", 7, 3, 1},
{ "QuotesServer", 8, 3, 1},
{ "LPRServer", 9, 3, 1},
{ "ImpressServer", 10, 3, 1},
{ "RLPServer", 11, 3, 1},
{ "Hostname", 12, 1, 1},
{ "BootFileSize", 13, 5, 1},
{ "MeritDumpFile", 14, 1, 1},
{ "DomainName", 15, 1, 1},
{ "SwapServer", 16, 3, 1},
{ "RootPath", 17, 1, 1},
{ "ExtensionFile", 18, 1, 1},
{ "ForwardOn/Off", 19, 7, 1},
{ "SrcRteOn/Off", 20, 7, 1},
{ "PolicyFilter", 21, 8, 1},
{ "MaxDGAssembly", 22, 5, 1},
{ "DefaultIPTTL", 23, 6, 1},
{ "MTUTimeout", 24, 4, 1},
{ "MTUPlateau", 25, 2, 1},
{ "MTUInterface", 26, 5, 1},
{ "MTUSubnet", 27, 7, 1},
{ "BroadcastAddress", 28, 3, 1},
{ "MaskDiscovery", 29, 7, 1},
{ "MaskSupplier", 30, 7, 1},
{ "RouterDiscovery", 31, 7, 1},
{ "RouterRequest", 32, 3, 1},
{ "StaticRoute", 33, 8, 1},
{ "Trailers", 34, 7, 1},
{ "ARPTimeout", 35, 4, 1},
{ "Ethernet", 36, 7, 1},
{ "DefaultTCPTTL", 37, 6, 1},
{ "KeepaliveTime", 38, 4, 1},
{ "KeepaliveData", 39, 7, 1},
{ "NISDomain", 40, 1, 1},
{ "NISServers", 41, 3, 1},
{ "NTPServers", 42, 3, 1},
{ "VendorSpecificInf", 43, 2, 0},
{ "NETBIOSNameSrv", 44, 3, 1},
{ "NETBIOSDistSrv", 45, 3, 1},
{ "NETBIOSNodeType", 46, 6, 1},
{ "NETBIOSScope", 47, 1, 1},
{ "XWindowFont", 48, 1, 1},
{ "XWindowManager", 49, 3, 1},
{ "AddressRequest", 50, 3, 0},
{ "AddressTime", 51, 4, 1},
{ "OverLoad", 52, 7, 0},
{ "DHCPMsgType", 53, 6, 0},
{ "DHCPServerId", 54, 3, 0},
{ "ParameterList", 55, 2, 0},
{ "DHCPMessage", 56, 1, 0},
{ "DHCPMaxMsgSize", 57, 5, 0},
{ "RenewalTime", 58, 4, 1},
{ "RebindingTime", 59, 4, 1},
{ "ClassId", 60, 1, 0},
{ "ClientId", 61, 2, 0},
{ "NetWareIPDomain", 62, 1, 1},
{ "NetWareIPOption", 63, 2, 1},
{ "NISDomainName", 64, 1, 1},
{ "NISServerAddr", 65, 3, 1},
{ "TFTPServerName", 66, 1, 1},
{ "BootFileOption", 67, 1, 1},
{ "HomeAgentAddrs", 68, 3, 1},
{ "SMTPServer", 69, 3, 1},
{ "POP3Server", 70, 3, 1},
{ "NNTPServer", 71, 3, 1},
{ "WWWServer", 72, 3, 1},
{ "FingerServer", 73, 3, 1},
{ "IRCServer", 74, 3, 1},
{ "StreetTalkServer", 75, 3, 1},
{ "STDAServer", 76, 3, 1},
{ "UserClass", 77, 1, 0},
{ "DirectoryAgent", 78, 1, 1},
{ "ServiceScope", 79, 1, 1},
{ "RapidCommit", 80, 2, 0},
{ "ClientFQDN", 81, 2, 0},
{ "RelayAgentInformation", 82, 2, 0},
{ "iSNS", 83, 1, 1},
{ "NDSServers", 85, 3, 1},
{ "NDSTreeName", 86, 1, 1},
{ "NDSContext", 87, 1, 1},
{ "LDAP", 95, 1, 1},
{ "PCode", 100, 1, 1},
{ "TCode", 101, 1, 1},
{ "NetInfoAddress", 112, 3, 1},
{ "NetInfoTag", 113, 1, 1},
{ "URL", 114, 1, 1},
{ "AutoConfig", 116, 7, 1},
{ "NameServiceSearch", 117, 2, 1},
{ "SubnetSelectionOption", 118, 3, 1},
{ "DomainSearch", 119, 1, 1},
{ "SIPServersDHCPOption", 120, 1, 1},
// { "121", 121, 1, 1},
{ "CCC", 122, 1, 1},
{ "TFTPServerIPaddress", 128, 3, 1},
{ "CallServerIPaddress", 129, 3, 1},
{ "DiscriminationString", 130, 1, 1},
{ "RemoteStatisticsServerIPAddress", 131, 3, 1},
{ "HTTPProxyPhone", 135, 3, 1},
{ "OPTION_CAPWAP_AC_V4", 138, 1, 1},
{ "OPTIONIPv4_AddressMoS", 139, 1, 1},
{ "OPTIONIPv4_FQDNMoS", 140, 1, 1},
{ "SIPUAServiceDomains", 141, 1, 1},
{ "OPTIONIPv4_AddressANDSF", 142, 1, 1},
{ "IPTelephone", 176, 1, 1},
{ "ConfigurationFile", 209, 1, 1},
{ "PathPrefix", 210, 1, 1},
{ "RebootTime", 211, 4, 1},
{ "OPTION_6RD", 212, 1, 1},
{ "OPTION_V4_ACCESS_DOMAIN", 213, 1, 1},
{ "BootFileName", 253, 1, 1},
{ "NextServer", 254, 3, 1},
};
void WINAPI ServiceControlHandler(DWORD controlCode)
{
switch (controlCode)
{
case SERVICE_CONTROL_INTERROGATE:
break;
case SERVICE_CONTROL_SHUTDOWN:
case SERVICE_CONTROL_STOP:
serviceStatus.dwCurrentState = SERVICE_STOP_PENDING;
serviceStatus.dwWaitHint = 20000;
serviceStatus.dwCheckPoint = 1;
SetServiceStatus(serviceStatusHandle, &serviceStatus);
kRunning = false;
SetEvent(stopServiceEvent);
return;
case SERVICE_CONTROL_PAUSE:
break;
case SERVICE_CONTROL_CONTINUE:
break;
default:
if (controlCode >= 128 && controlCode <= 255)
break;
else
break;
}
SetServiceStatus(serviceStatusHandle, &serviceStatus);
}
void WINAPI ServiceMain(DWORD /*argc*/, TCHAR* /*argv*/[])
{
char logBuff[512];
serviceStatus.dwServiceType = SERVICE_WIN32;
serviceStatus.dwCurrentState = SERVICE_STOPPED;
serviceStatus.dwControlsAccepted = 0;
serviceStatus.dwWin32ExitCode = NO_ERROR;
serviceStatus.dwServiceSpecificExitCode = NO_ERROR;
serviceStatus.dwCheckPoint = 0;
serviceStatus.dwWaitHint = 0;
serviceStatusHandle = RegisterServiceCtrlHandler(serviceName, ServiceControlHandler);
if (serviceStatusHandle)
{
serviceStatus.dwCurrentState = SERVICE_START_PENDING;
SetServiceStatus(serviceStatusHandle, &serviceStatus);
if (_beginthread(init, 0, 0) == 0)
{
if (verbatim || cfig.dhcpLogLevel)
{
sprintf(logBuff, "Thread Creation Failed");
logDHCPMess(logBuff, 1);
}
Sleep(1000);
exit(-1);
}
tv.tv_sec = 20;
tv.tv_usec = 0;
stopServiceEvent = CreateEvent(0, FALSE, FALSE, 0);
serviceStatus.dwControlsAccepted |= (SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN);
serviceStatus.dwCurrentState = SERVICE_RUNNING;
SetServiceStatus(serviceStatusHandle, &serviceStatus);
do
{
if (!network.ready)
{
Sleep(1000);
network.busy = false;
continue;
}
if (!network.dhcpConn[0].ready)
{
Sleep(1000);
network.busy = false;
continue;
}
//Sleep(200000);
//debug("good");
FD_ZERO(&readfds);
network.busy = true;
if (network.httpConn.ready)
FD_SET(network.httpConn.sock, &readfds);
for (int i = 0; i < MAX_SERVERS && network.dhcpConn[i].ready; i++)
FD_SET(network.dhcpConn[i].sock, &readfds);
if (cfig.dhcpReplConn.ready)
FD_SET(cfig.dhcpReplConn.sock, &readfds);
if (select(network.maxFD, &readfds, NULL, NULL, &tv))
{
t = time(NULL);
if (network.httpConn.ready && FD_ISSET(network.httpConn.sock, &readfds))
{
data19 *req = (data19*)calloc(1, sizeof(data19));
if (req)
{
req->sockLen = sizeof(req->remote);
req->sock = accept(network.httpConn.sock, (sockaddr*)&req->remote, &req->sockLen);
if (req->sock == INVALID_SOCKET)
{
sprintf(logBuff, "Accept Failed, Error=%u\n", WSAGetLastError());
logDHCPMess(logBuff, 1);
free(req);
}
else
procHTTP(req);
}
else
{
sprintf(logBuff, "Memory Error");
logDHCPMess(logBuff, 1);
}
}
for (int i = 0; i < MAX_SERVERS && network.dhcpConn[i].ready; i++)
{
if (FD_ISSET(network.dhcpConn[i].sock, &readfds) && gdmess(&dhcpr, i) && sdmess(&dhcpr))
alad(&dhcpr);
}
if (cfig.dhcpReplConn.ready && FD_ISSET(cfig.dhcpReplConn.sock, &readfds))
{
errno = 0;
dhcpr.sockLen = sizeof(dhcpr.remote);
dhcpr.bytes = recvfrom(cfig.dhcpReplConn.sock,
dhcpr.raw,
sizeof(dhcpr.raw),
0,
(sockaddr*)&dhcpr.remote,
&dhcpr.sockLen);
errno = WSAGetLastError();
if (errno || dhcpr.bytes <= 0)
cfig.dhcpRepl = 0;
}
}
else
t = time(NULL);
}
while (WaitForSingleObject(stopServiceEvent, 0) == WAIT_TIMEOUT);
serviceStatus.dwCurrentState = SERVICE_STOP_PENDING;
//serviceStatus.dwCheckPoint = 2;
//serviceStatus.dwWaitHint = 1000;
SetServiceStatus(serviceStatusHandle, &serviceStatus);
sprintf(logBuff, "Closing Network Connections...");
logDHCPMess(logBuff, 1);
closeConn();
if (cfig.dhcpReplConn.ready)
closesocket(cfig.dhcpReplConn.sock);
sprintf(logBuff, "Open DHCP Server Stopped !\n");
logDHCPMess(logBuff, 1);
Sleep(2000);
WSACleanup();
serviceStatus.dwControlsAccepted &= ~(SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN);
serviceStatus.dwCurrentState = SERVICE_STOPPED;
SetServiceStatus(serviceStatusHandle, &serviceStatus);
CloseHandle(stopServiceEvent);
stopServiceEvent = 0;
}
}
void closeConn()
{
if (network.httpConn.ready)
closesocket(network.httpConn.sock);
for (int i = 0; i < MAX_SERVERS && network.dhcpConn[i].loaded; i++)
if (network.dhcpConn[i].ready)
closesocket(network.dhcpConn[i].sock);
}
void runService()
{
SERVICE_TABLE_ENTRY serviceTable[] =
{
{serviceName, ServiceMain},
{0, 0}
};
StartServiceCtrlDispatcher(serviceTable);
}
void showError(MYDWORD enumber)
{
LPTSTR lpMsgBuf;
FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
enumber,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
(LPTSTR)&lpMsgBuf,
0,
NULL
);
printf("%s\n", lpMsgBuf);
}
bool stopService(SC_HANDLE service)
{
if (service)
{
SERVICE_STATUS serviceStatus;
QueryServiceStatus(service, &serviceStatus);
if (serviceStatus.dwCurrentState != SERVICE_STOPPED)
{
ControlService(service, SERVICE_CONTROL_STOP, &serviceStatus);
printf("Stopping Service.");
for (int i = 0; i < 100; i++)
{
QueryServiceStatus(service, &serviceStatus);
if (serviceStatus.dwCurrentState == SERVICE_STOPPED)
{
printf("Stopped\n");
return true;
}
else
{
Sleep(500);
printf(".");
}
}
printf("Failed\n");
return false;
}
}
return true;
}
void installService()
{
SC_HANDLE serviceControlManager = OpenSCManager(0, 0, SC_MANAGER_CREATE_SERVICE | SERVICE_START);
if (serviceControlManager)
{
TCHAR path[ _MAX_PATH + 1 ];
if (GetModuleFileName(0, path, sizeof(path) / sizeof(path[0])) > 0)
{
SC_HANDLE service = CreateService(serviceControlManager,
serviceName, displayName,
SERVICE_ALL_ACCESS, SERVICE_WIN32_OWN_PROCESS,
SERVICE_AUTO_START, SERVICE_ERROR_IGNORE, path,
0, 0, 0, 0, 0);
if (service)
{
printf("Successfully installed.. !\n");
StartService(service, 0, NULL);
CloseServiceHandle(service);
}
else
{
showError(GetLastError());
}
}
CloseServiceHandle(serviceControlManager);
}
}
void uninstallService()
{
SC_HANDLE serviceControlManager = OpenSCManager(0, 0, SC_MANAGER_CONNECT);
if (serviceControlManager)
{
SC_HANDLE service = OpenService(serviceControlManager,
serviceName, SERVICE_QUERY_STATUS | SERVICE_STOP | DELETE);
if (service)
{
if (stopService(service))
{
if (DeleteService(service))
printf("Successfully Removed !\n");
else
showError(GetLastError());
}
else
printf("Failed to Stop Service..\n");
CloseServiceHandle(service);
}
else
printf("Service Not Found..\n");
CloseServiceHandle(serviceControlManager);
}
}
int main(int argc, TCHAR* argv[])
{
OSVERSIONINFO osvi;
osvi.dwOSVersionInfoSize = sizeof(osvi);
bool result = GetVersionEx(&osvi);
if (result && osvi.dwPlatformId >= VER_PLATFORM_WIN32_NT)
{
if (argc > 1 && lstrcmpi(argv[1], TEXT("-i")) == 0)
{
installService();
}
else if (argc > 1 && lstrcmpi(argv[1], TEXT("-u")) == 0)
{
uninstallService();
}
else if (argc > 1 && lstrcmpi(argv[1], TEXT("-v")) == 0)
{
SC_HANDLE serviceControlManager = OpenSCManager(0, 0, SC_MANAGER_CONNECT);
bool serviceStopped = true;
if (serviceControlManager)
{
SC_HANDLE service = OpenService(serviceControlManager, serviceName, SERVICE_QUERY_STATUS | SERVICE_STOP);
if (service)
{
serviceStopped = stopService(service);
CloseServiceHandle(service);
}
CloseServiceHandle(serviceControlManager);
}
if (serviceStopped)
{
verbatim = true;
runProg();
}
else
printf("Failed to Stop Service\n");
}
else
runService();
}
else if (argc == 1 || lstrcmpi(argv[1], TEXT("-v")) == 0)
{
verbatim = true;
runProg();
}
else
printf("This option is not available on Windows95/98/ME\n");
return 0;
}
void runProg()
{
//printf("%i\n",t);
//printf("%i\n",sizeof(data7));
//printf("%d\n",dnsCache[currentInd].max_size());
char logBuff[512];
if (_beginthread(init, 0, 0) == 0)
{
if (verbatim || cfig.dhcpLogLevel)
{
sprintf(logBuff, "Thread Creation Failed");
logDHCPMess(logBuff, 1);
}
Sleep(1000);
exit(-1);
}
tv.tv_sec = 20;
tv.tv_usec = 0;
do
{
FD_ZERO(&readfds);
if (!network.ready)
{
Sleep(1000);
network.busy = false;
continue;
}
if (!network.dhcpConn[0].ready)
{
Sleep(1000);
network.busy = false;
continue;
}
network.busy = true;
if (network.httpConn.ready)
FD_SET(network.httpConn.sock, &readfds);
for (int i = 0; i < MAX_SERVERS && network.dhcpConn[i].ready; i++)
FD_SET(network.dhcpConn[i].sock, &readfds);
if (cfig.dhcpReplConn.ready)
FD_SET(cfig.dhcpReplConn.sock, &readfds);
if (select(network.maxFD, &readfds, NULL, NULL, &tv))
{
t = time(NULL);
if (network.httpConn.ready && FD_ISSET(network.httpConn.sock, &readfds))
{
data19 *req = (data19*)calloc(1, sizeof(data19));
if (req)
{
req->sockLen = sizeof(req->remote);
req->sock = accept(network.httpConn.sock, (sockaddr*)&req->remote, &req->sockLen);
if (req->sock == INVALID_SOCKET)
{
sprintf(logBuff, "Accept Failed, Error=%u\n", WSAGetLastError());
logDHCPMess(logBuff, 1);
free(req);
}
else
procHTTP(req);
}
else
{
sprintf(logBuff, "Memory Error");
logDHCPMess(logBuff, 1);
}
}
for (int i = 0; i < MAX_SERVERS && network.dhcpConn[i].ready; i++)
{
if (FD_ISSET(network.dhcpConn[i].sock, &readfds) && gdmess(&dhcpr, i) && sdmess(&dhcpr))
alad(&dhcpr);
}
if (cfig.dhcpReplConn.ready && FD_ISSET(cfig.dhcpReplConn.sock, &readfds))
{
errno = 0;
dhcpr.sockLen = sizeof(dhcpr.remote);
dhcpr.bytes = recvfrom(cfig.dhcpReplConn.sock,
dhcpr.raw,
sizeof(dhcpr.raw),
0,
(sockaddr*)&dhcpr.remote,
&dhcpr.sockLen);
errno = WSAGetLastError();
if (errno || dhcpr.bytes <= 0)
cfig.dhcpRepl = 0;
}
}
else
t = time(NULL);
}
while (kRunning);
kRunning = false;
sprintf(logBuff, "Closing Network Connections...");
logDHCPMess(logBuff, 1);
closeConn();
if (cfig.dhcpReplConn.ready)
closesocket(cfig.dhcpReplConn.sock);
sprintf(logBuff, "Open DHCP Server Stopped !\n");
logDHCPMess(logBuff, 1);
WSACleanup();
}
MYWORD fUShort(void *raw)
{
return ntohs(*((MYWORD*)raw));
}
MYDWORD fULong(void *raw)
{
return ntohl(*((MYDWORD*)raw));
}
MYDWORD fIP(void *raw)
{
return(*((MYDWORD*)raw));
}
MYBYTE pUShort(void *raw, MYWORD data)
{
*((MYWORD*)raw) = htons(data);
return sizeof(MYWORD);
}
MYBYTE pULong(void *raw, MYDWORD data)
{
*((MYDWORD*)raw) = htonl(data);
return sizeof(MYDWORD);
}
MYBYTE pIP(void *raw, MYDWORD data)
{
*((MYDWORD*)raw) = data;
return sizeof(MYDWORD);
}
void procHTTP(data19 *req)
{
//debug("procHTTP");
char logBuff[256];
char tempbuff[512];
req->ling.l_onoff = 1; //0 = off (l_linger ignored), nonzero = on
req->ling.l_linger = 30; //0 = discard data, nonzero = wait for data sent
setsockopt(req->sock, SOL_SOCKET, SO_LINGER, (const char*)&req->ling, sizeof(req->ling));
timeval tv1;
fd_set readfds1;
FD_ZERO(&readfds1);
tv1.tv_sec = 1;
tv1.tv_usec = 0;
FD_SET(req->sock, &readfds1);
if (!select((req->sock + 1), &readfds1, NULL, NULL, &tv1))
{
sprintf(logBuff, "HTTP Client %s, Message Receive failed", IP2String(tempbuff, req->remote.sin_addr.s_addr));
logDHCPMess(logBuff, 1);
closesocket(req->sock);
free(req);
return;
}
char buffer[2048];
req->bytes = recv(req->sock, buffer, sizeof(buffer), 0);
errno = WSAGetLastError();
if (verbatim || cfig.dhcpLogLevel >= 1 && (errno || req->bytes <= 0))
{
sprintf(logBuff, "HTTP Client %s, Message Receive failed, WSAError %d", IP2String(tempbuff, req->remote.sin_addr.s_addr), errno);
logDHCPMess(logBuff, 1);
closesocket(req->sock);
free(req);
return;
}
else if (verbatim || cfig.dhcpLogLevel >= 2)
{
sprintf(logBuff, "HTTP Client %s, Request Processed", IP2String(tempbuff, req->remote.sin_addr.s_addr));
logDHCPMess(logBuff, 2);
//printf("%s\n", buffer);
}
if (cfig.httpClients[0] && !findServer(cfig.httpClients, 8, req->remote.sin_addr.s_addr))
{
if (verbatim || cfig.dhcpLogLevel >= 2)
{
sprintf(logBuff, "HTTP Client %s, Access Denied", IP2String(tempbuff, req->remote.sin_addr.s_addr));
logDHCPMess(logBuff, 2);
}
req->dp = (char*)calloc(1, sizeof(send403));
req->memSize = sizeof(send403);
req->bytes = sprintf(req->dp, send403);
return;
}
buffer[sizeof(buffer) - 1] = 0;
char *fp = NULL;
char *end = strchr(buffer, '\n');
if (end && end > buffer && (*(end - 1) == '\r'))
{
*(end - 1) = 0;
if (myTokenize(buffer, buffer, " ", true) > 1)
fp = myGetToken(buffer, 1);
}
if (fp && !strcasecmp(fp, "/"))
sendStatus(req);
// else if (fp && !strcasecmp(fp, "/scopestatus"))
// sendScopeStatus(req);
else
{
if (fp && (verbatim || cfig.dhcpLogLevel >= 2))
{
sprintf(logBuff, "HTTP Client %s, %s not found", IP2String(tempbuff, req->remote.sin_addr.s_addr), fp);
logDHCPMess(logBuff, 2);
}
else if (verbatim || cfig.dhcpLogLevel >= 2)
{
sprintf(logBuff, "HTTP Client %s, Invalid request", IP2String(tempbuff, req->remote.sin_addr.s_addr));
logDHCPMess(logBuff, 2);
}
req->dp = (char*)calloc(1, sizeof(send404));
req->bytes = sprintf(req->dp, send404);
req->memSize = sizeof(send404);
_beginthread(sendHTTP, 0, (void*)req);
return;
}
}
void sendStatus(data19 *req)
{
//debug("sendStatus");
char ipbuff[16];
char extbuff[16];
char logBuff[512];
char tempbuff[512];
dhcpMap::iterator p;
MYDWORD iip = 0;
data7 *dhcpEntry = NULL;
//data7 *cache = NULL;
//printf("%d=%d\n", dhcpCache.size(), cfig.dhcpSize);
req->memSize = 2048 + (135 * dhcpCache.size()) + (cfig.dhcpSize * 26);
req->dp = (char*)calloc(1, req->memSize);
if (!req->dp)
{
sprintf(logBuff, "Memory Error");
logDHCPMess(logBuff, 1);
closesocket(req->sock);
free(req);
return;
}
char *fp = req->dp;
char *maxData = req->dp + (req->memSize - 512);
//tm *ttm = gmtime(&t);
//strftime(tempbuff, sizeof(tempbuff), "%a, %d %b %Y %H:%M:%S GMT", ttm);
//fp += sprintf(fp, send200, tempbuff, tempbuff);
//fp += sprintf(fp, send200);
//char *contentStart = fp;
fp += sprintf(fp, htmlStart, htmlTitle);
//const char bodyStart[] = "<body bgcolor=\"#cccccc\"><table border=\"0\"><tr><td>\n<table width=\"100%%\" border=\"0\"><tr><td colspan=\"2\" align=\"center\"><font size=\"5\"><b>%s</b></font></td></tr><tr><td align=\"left\">Server Name: %s%s</td><td align=\"right\"><a target=\"_new\" href=\"http://dhcp-dns-server.sourceforge.net\">http://dhcp-dns-server.sourceforge.net</td></tr></table>";
if (cfig.replication == 1)
fp += sprintf(fp, bodyStart, sVersion, cfig.servername, "(Primary)");
else if (cfig.replication == 2)
fp += sprintf(fp, bodyStart, sVersion, cfig.servername, "(Secondary)");
else
fp += sprintf(fp, bodyStart, sVersion, cfig.servername, "");
//fp += sprintf(fp, bodyStart, sVersion, cfig.servername);
fp += sprintf(fp, "\n<table border=\"1\" cellpadding=\"1\" width=\"100%%\" bgcolor=\"#b8b8b8\">\n");
if (cfig.dhcpRepl > t)
{
fp += sprintf(fp, "<tr><th colspan=\"5\"><font size=\"5\"><i>Active Leases</i></font></th></tr>\n");
fp += sprintf(fp, "<tr><th>Mac Address</th><th>IP</th><th>Lease Expiry</th><th>Hostname (first 20 chars)</th><th>Server</th></tr>\n");
}
else
{
fp += sprintf(fp, "<tr><th colspan=\"4\"><font size=\"5\"><i>Active Leases</i></font></th></tr>\n");
fp += sprintf(fp, "<tr><th>Mac Address</th><th>IP</th><th>Lease Expiry</th><th>Hostname (first 20 chars)</th></tr>\n");
}
for (p = dhcpCache.begin(); kRunning && p != dhcpCache.end() && fp < maxData; p++)
{
//if ((dhcpEntry = p->second) && dhcpEntry->display)
if ((dhcpEntry = p->second) && dhcpEntry->display && dhcpEntry->expiry >= t)
{
fp += sprintf(fp, "<tr>");
fp += sprintf(fp, td200, dhcpEntry->mapname);
fp += sprintf(fp, td200, IP2String(tempbuff, dhcpEntry->ip));
if (dhcpEntry->expiry >= INT_MAX)
fp += sprintf(fp, td200, "Infinity");
else
{
tm *ttm = localtime(&dhcpEntry->expiry);
strftime(tempbuff, sizeof(tempbuff), "%d-%b-%y %X", ttm);
fp += sprintf(fp, tdnowrap200, tempbuff);
}
if (dhcpEntry->hostname[0])
{
strcpy(tempbuff, dhcpEntry->hostname);
tempbuff[20] = 0;
fp += sprintf(fp, td200, tempbuff);
}
else
fp += sprintf(fp, td200, " ");
if (cfig.dhcpRepl > t)
{
if (dhcpEntry->local && cfig.replication == 1)
fp += sprintf(fp, td200, "Primary");
else if (dhcpEntry->local && cfig.replication == 2)
fp += sprintf(fp, td200, "Secondary");
else if (cfig.replication == 1)
fp += sprintf(fp, td200, "Secondary");
else
fp += sprintf(fp, td200, "Primary");
}
fp += sprintf(fp, "</tr>\n");
}
}
fp += sprintf(fp, "</table>\n<br>\n<table border=\"1\" cellpadding=\"1\" width=\"100%%\" bgcolor=\"#b8b8b8\">\n");
fp += sprintf(fp, "<tr><th colspan=\"4\"><font size=\"5\"><i>Free Dynamic Leases</i></font></th></tr>\n");
fp += sprintf(fp, "<tr><td><b>DHCP Range</b></td><td><b>Mask</b></td><td align=\"right\"><b>Available Leases</b></td><td align=\"right\"><b>Free Leases</b></td></tr>\n");
for (char rangeInd = 0; kRunning && rangeInd < cfig.rangeCount && fp < maxData; rangeInd++)
{
MYWORD ipused = 0;
MYWORD ipfree = 0;
MYWORD ind = 0;
for (MYDWORD iip = cfig.dhcpRanges[rangeInd].rangeStart; iip <= cfig.dhcpRanges[rangeInd].rangeEnd; iip++, ind++)
{
if (cfig.dhcpRanges[rangeInd].expiry[ind] != INT_MAX)
{
if (cfig.dhcpRanges[rangeInd].expiry[ind] < t)
ipfree++;
else
ipused++;
}
}
IP2String(tempbuff, ntohl(cfig.dhcpRanges[rangeInd].rangeStart));
IP2String(ipbuff, ntohl(cfig.dhcpRanges[rangeInd].rangeEnd));
IP2String(extbuff, cfig.dhcpRanges[rangeInd].mask);
fp += sprintf(fp, "<tr><td nowrap>%s - %s</td><td nowrap>%s</td><td align=\"right\">%i</td><td align=\"right\">%i</td></tr>\n", tempbuff, ipbuff, extbuff, (ipused + ipfree), ipfree);
}
fp += sprintf(fp, "</table>\n<br>\n<table border=\"1\" width=\"100%%\" cellpadding=\"1\" bgcolor=\"#b8b8b8\">\n");
fp += sprintf(fp, "<tr><th colspan=\"4\"><font size=\"5\"><i>Free Static Leases</i></font></th></tr>\n");
fp += sprintf(fp, "<tr><th>Mac Address</th><th>IP</th><th>Mac Address</th><th>IP</th></tr>\n");
MYBYTE colNum = 0;
for (p = dhcpCache.begin(); kRunning && p != dhcpCache.end() && fp < maxData; p++)
{
if ((dhcpEntry = p->second) && dhcpEntry->fixed && dhcpEntry->expiry < t)
{
if (!colNum)
{
fp += sprintf(fp, "<tr>");
colNum = 1;
}
else if (colNum == 1)
{
colNum = 2;
}
else if (colNum == 2)
{
fp += sprintf(fp, "</tr>\n<tr>");
colNum = 1;
}
fp += sprintf(fp, td200, dhcpEntry->mapname);
fp += sprintf(fp, td200, IP2String(tempbuff, dhcpEntry->ip));
}
}
if (colNum)
fp += sprintf(fp, "</tr>\n");
fp += sprintf(fp, "</table></td></tr></table>\n</body>\n</html>");
//MYBYTE x = sprintf(tempbuff, "%u", (fp - contentStart));
//memcpy((contentStart - 12), tempbuff, x);
req->bytes = fp - req->dp;
_beginthread(sendHTTP, 0, (void*)req);
return;
}
/*
void sendScopeStatus(data19 *req)
{
//debug("sendScopeStatus");
MYBYTE rangeCount = 0;
req->memSize = 1536 + (150 * cfig.rangeCount);
req->dp = (char*)calloc(1, req->memSize);