#include "Connector.h"
#include "SSHAuth.h"
#include "Filter.h"

//#if defined(WIN32) || defined(_WIN32) || defined(__WIN32) && !defined(__CYGWIN__)
//int _pingMyTarget(const char *ip)
//{
//    HANDLE hIcmpFile;
//    unsigned long ipaddr = INADDR_NONE;
//    DWORD dwRetVal = 0;
//    char SendData[32] = "Data Buffer";
//    LPVOID ReplyBuffer = NULL;
//    DWORD ReplySize = 0;
//
//    ipaddr = inet_addr(ip);
//
//    if (ipaddr == INADDR_NONE)
//    {
//        stt->doEmitionRedFoundData("[Pinger] INADDR_NONE! [" + QString(ip) + "]");
//        return 0;
//    }
//
//    hIcmpFile = IcmpCreateFile();
//    if (hIcmpFile == INVALID_HANDLE_VALUE)
//    {
//        stt->doEmitionRedFoundData("[Pinger] Unable to open handle. [" + QString::number(GetLastError()) + "]");
//        return 0;
//   }
//
//    ReplySize = sizeof(ICMP_ECHO_REPLY) + sizeof(SendData);
//    ReplyBuffer = (VOID*) malloc(ReplySize);
//    if (ReplyBuffer == NULL)
//    {
//        stt->doEmitionRedFoundData("[Pinger] Unable to allocate memory.");
//        return 0;
//    }
//
//    dwRetVal = IcmpSendEcho(hIcmpFile, ipaddr, SendData, sizeof(SendData),
//        NULL, ReplyBuffer, ReplySize, gPingTimeout*1000);
//    if (dwRetVal != 0) {
//        PICMP_ECHO_REPLY pEchoReply = (PICMP_ECHO_REPLY)ReplyBuffer;
//        struct in_addr ReplyAddr;
//        ReplyAddr.S_un.S_addr = pEchoReply->Address;
//        printf("\tSent icmp message to %s\n", "127.0.0.1");
//        if (dwRetVal > 1)
//        {
//            if(gDebugMode) stt->doEmitionYellowFoundData("[Pinger] Received " + QString::number(dwRetVal) + " icmp message responses.");
//        }
//        else
//        {
//            if(gDebugMode) stt->doEmitionYellowFoundData("[Pinger] Received " + QString::number(dwRetVal) + " icmp message responses.");
//        }
//
//        if(gDebugMode) stt->doEmitionYellowFoundData("[Pinger] Received from: " + QString(inet_ntoa( ReplyAddr )) + "; Status = " + QString::number(pEchoReply->Status) + "; Roundtrip time = " + QString::number(pEchoReply->RoundTripTime) + "ms.");
//        return 1;
//    }
//    else
//    {
//        printf("\tCall to IcmpSendEcho failed.\n");
//        printf("\tIcmpSendEcho returned error: %ld\n", GetLastError() );
//        if(gDebugMode) stt->doEmitionRedFoundData("[Pinger] Call to IcmpSendEcho failed. IcmpSendEcho returned error: " + QString::number(GetLastError()));
//        return 0;
//    };
//}
//#else
//int _pingMyTarget(const char *ip)
//{
//    FILE *pipe = popen(("ping -w " + std::to_string(gPingTimeout) + " " + ip).c_str(), "r");
//    if(!pipe) {
//        stt->doEmitionRedFoundData("Ping pipe failed: cannot open pipe.");
//        perror("pipe");
//        return 0;
//    }
//
//    char buffer[128] = {0};
//    std::string result;
//
//    while(!feof(pipe)) {
//        if(fgets(buffer, 128, pipe) != NULL){
//            result += buffer;
//        }
//    }
//    pclose(pipe);
//
//    if(strstr((char*)result.c_str(), "100% packet loss") != NULL) return 0;
//    return 1;
//}
//#endif

struct data {
  char trace_ascii; /* 1 or 0 */
};

static
int my_trace(CURL *handle, curl_infotype type,
             char *data, size_t size,
             void *userp)
{
  if (type == CURLINFO_HEADER_OUT) {
	  data[size] = '\0';
	  Activity += strlen(data);
	  stt->doEmitionAddOutData(QString(data));
  }

  return 0;
}

size_t nWriteCallback(void *contents, size_t size, size_t nmemb, void *userp)
{
	size_t realsize = size * nmemb;
	if (((std::string*)userp)->size() > 180000) return -1;
	((std::string*)userp)->append((char*)contents, realsize);
	Activity += realsize;
	return realsize;

	//struct MemoryStruct *mem = (struct MemoryStruct *)userp;
	//if (mem->size > 180000) return -1;
	//size_t realsize = size * nmemb;
	//mem->memory = (char*)realloc(mem->memory, mem->size + realsize + 1);

	//if (mem->memory == NULL) {
	//	stt->doEmitionRedFoundData("not enough memory (realloc returned NULL)\n");
	//	return 0;
	//}

	//memcpy(&(mem->memory[mem->size]), contents, realsize);
	//mem->size += realsize;
	//mem->memory[mem->size] = 0;
	//Activity += realsize;
	//return realsize;
}

int pConnect(const char* ip, const int port, std::string *buffer,
	const char *postData,
	const std::vector<std::string> *customHeaders,
	const std::string *lpString,
	bool digestMode)
{
	buffer->clear();
	int res = 0;
	CURL *curl = curl_easy_init();

	if (curl != NULL)
	{
		curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1L);
		if (MapWidgetOpened) {
			struct data config;
			config.trace_ascii = 1; /* enable ascii tracing */
			curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, my_trace);
			curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &config);
			curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
		}
		curl_easy_setopt(curl, CURLOPT_URL, ip);
		curl_easy_setopt(curl, CURLOPT_PORT, port);
		curl_easy_setopt(curl, CURLOPT_USERAGENT,
			"Mozilla/5.0 (X11; Linux x86_64; rv:35.0) Gecko/20100101 Firefox/35.0");
		curl_easy_setopt(curl, CURLOPT_HEADER, 1L);
		curl_easy_setopt(curl, CURLOPT_AUTOREFERER, 1L);
		curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
		curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L);
		curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, nWriteCallback);
		curl_easy_setopt(curl, CURLOPT_WRITEDATA, buffer);
		int proxyPort = std::atoi(gProxyPort);
		if (proxyPort > 0 && proxyPort < 65535) curl_easy_setopt(curl, CURLOPT_PROXYPORT, proxyPort);
		curl_easy_setopt(curl, CURLOPT_PROXY, gProxyIP);
		curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
		curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, gTimeOut);
		curl_easy_setopt(curl, CURLOPT_TIMEOUT, gTimeOut + 3);

		if (postData != NULL) curl_easy_setopt(curl, CURLOPT_POSTFIELDS, postData);

		if (customHeaders != NULL) {

			struct curl_slist *chunk = NULL;
			for (auto &ch : *customHeaders) chunk = curl_slist_append(chunk, ch.c_str());
			curl_easy_setopt(curl, CURLOPT_HTTPHEADER, chunk);
		}

		if (lpString != NULL) {
			curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1L);
			curl_easy_setopt(curl, CURLOPT_FTPLISTONLY, 1L);
			curl_easy_setopt(curl, CURLOPT_USERPWD, lpString->c_str());
			if (digestMode)
			{
				curl_easy_setopt(curl, CURLOPT_HTTPAUTH, (long)CURLAUTH_DIGEST);
				res = curl_easy_perform(curl);

				if (port != 21 && lpString != NULL) {
					int pos = Utils::ustrstr(*buffer, "\r\n\r\n");
					if (pos != -1) {
						*buffer = buffer->substr(pos + 4);
					}
				}
			}
			else res = curl_easy_perform(curl);
		}
		else res = curl_easy_perform(curl);

		int sz = buffer->size();

		curl_easy_cleanup(curl);
		if (res == CURLE_OK || (port == 21 && sz > 0)) {
			if (MapWidgetOpened) stt->doEmitionAddIncData(QString(ip), QString(buffer->c_str()));
			Activity += sz;
			return sz;
		}
		else if (res == CURLE_LOGIN_DENIED && port == 21) {
			return -1;
		}
		else if (res == CURLE_OPERATION_TIMEDOUT
			|| res == CURLE_COULDNT_CONNECT
			|| res == CURLE_SEND_ERROR
			|| res == CURLE_RECV_ERROR
			) {
			//if (gNegDebugMode)
			//{
			//	stt->doEmitionDebugFoundData("NConnect failed (curl_code: " + QString::number(res) + ") [<a href=\"" + QString(ip) +
			//		"/\"><font color=\"#0084ff\">" + QString(ip) + " Port:" + QString::number(port) + "</font></a>]");
			//}
			SOCKET eNobuffSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
			shutdown(eNobuffSocket, SD_BOTH);
			closesocket(eNobuffSocket);
			if (ENOBUFS == eNobuffSocket || ENOMEM == eNobuffSocket) {
				stt->doEmitionRedFoundData("Insufficient buffer/memory space. Sleeping for 10 sec...");
				Sleep(10000);
			}
			return -1;
		}
		else {
			if (res == 6) return -2;
			else if (res != 13 &&
				res != 67 &&
				res != 52 &&
				res != 56 &&
				res != 35 &&
				res != 19 &&
				res != 23)
			{
				if (res == 5) {
					stt->doEmitionRedFoundData("The given proxy host could not be resolved.");
					return -2;
				}
				else if (res == 8) {
					stt->doEmitionFoundData("Strange ftp reply. (" +
						QString::number(res) + ") " + QString(ip) +
						":" + QString::number(port));
					return -2;
				}
				else if (res == 18) {
					stt->doEmitionFoundData("Inappropriate file size. (" +
						QString::number(res) + ") " + QString(ip) +
						":" + QString::number(port));
					return -2;
				}
				else stt->doEmitionRedFoundData("CURL error: (" + QString::number(res) + ") " +
					QString(ip) + ":" + QString::number(port));
			};

			//if (res == 23 && sz > 0) {
			//	return sz;
			//}
			return sz;
			//else return -1;
		}

		if (MapWidgetOpened) stt->doEmitionAddIncData(QString(ip), QString(buffer->c_str()));

		return sz;
	}
	else {
		stt->doEmitionRedFoundData("Curl error.");
		return -1;
	};
}

void eraser(std::string *buffer, const std::string delim1, const std::string delim2) {
	int pos = -1;
	while ((pos = buffer->find(delim1)) != -1) {
		int ePos = buffer->find(delim2, pos);
		if (ePos != -1) {
			buffer->erase(pos, ePos - pos - 1 + delim2.length());
		}
		else {
			buffer->erase(pos, buffer->length() - pos - 1);
		}
	}
}
void cutoutComments(std::string *buffer) {
	eraser(buffer, "<!--", "-->");
	eraser(buffer, "/*", "*/");
	eraser(buffer, "//", "\n");
}

int Connector::nConnect(const char* ip, const int port, std::string *buffer,
                        const char *postData,
                        const std::vector<std::string> *customHeaders,
                        const std::string *lpString,
						bool digestMode){
	int res = pConnect(ip, port, buffer, postData, customHeaders, lpString, digestMode);
	cutoutComments(buffer);

	return res;
}

bool portCheck(const char * sDVRIP, int wDVRPort) {
//	sockaddr_in sa;
//	sa.sin_family = AF_INET;
//	sa.sin_port = htons(wDVRPort);
//
//	hostent *host = NULL;
//#if defined(WIN32)
//	if (inet_addr(sDVRIP) != INADDR_NONE) sa.sin_addr.S_un.S_addr = inet_addr(sDVRIP);
//#else
//	if (inet_addr(sDVRIP) != INADDR_NONE) sa.sin_addr.s_addr = inet_addr(sDVRIP);
//#endif
//	else if (host = gethostbyname(sDVRIP)) ((unsigned long*)&sa.sin_addr)[0] = ((unsigned long**)host->h_addr_list)[0][0];
//	else {
//		stt->doEmitionDebugFoundData("Port check failed - inet_addr failure. [<a href=\"" + QString(sDVRIP) + ":" + QString::number(wDVRPort) +
//			"/\"><font color=\"#0084ff\">" + QString(sDVRIP) + ":" + QString::number(wDVRPort) + "</font></a>]");
//		return false;
//	}
//
//	SOCKET sock = INVALID_SOCKET;
//	sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
//	if (sock == INVALID_SOCKET) return false;
//	else if (ENOBUFS == sock || ENOMEM == sock) {
//		stt->doEmitionRedFoundData("Insufficient buffer/memory space. Sleeping for 10 sec..."); 
//		return false;
//	}
//	
//	int res = connect(sock, (sockaddr*)&sa, sizeof(sa));
//
//	//shutdown(sock, SD_BOTH);
//	//closesocket(sock);
//	int resE = WSAGetLastError();
//	if (res == SOCKET_ERROR) {
//		if (gNegDebugMode)
//		{
//			stt->doEmitionDebugFoundData("Port check failed - SOCKET_ERROR. [<a href=\"" + QString(sDVRIP) + ":" + QString::number(wDVRPort) +
//				"/\"><font color=\"#0084ff\">" + QString(sDVRIP) + ":" + QString::number(wDVRPort) + "</font></a>]");
//		}
//		return false;
//	}
//	else {
//		stt->doEmitionDebugFoundData("WSAGetLastError1: " + QString::number(resE) + "socket: " + QString::number(sock) + " [<a href=\"" + QString(sDVRIP) + ":" + QString::number(wDVRPort) +
//			"/\"><font color=\"#0084ff\">" + QString(sDVRIP) + ":" + QString::number(wDVRPort) + "</font></a>]");
//		char tBuff[1] = { 0 };
//		int recvCode = send(sock, tBuff, 0, 0);
//		resE = WSAGetLastError();
//		stt->doEmitionDebugFoundData("WSAGetLastError2: " + QString::number(resE) + ") [<a href=\"" + QString(sDVRIP) + ":" + QString::number(wDVRPort) +
//			"/\"><font color=\"#0084ff\">" + QString(sDVRIP) + ":" + QString::number(wDVRPort) + "</font></a>]");
//		if (-1 == recvCode) {
//			stt->doEmitionDebugFoundData("Port check failed (recv code: " + QString::number(recvCode) + ") [<a href=\"" + QString(sDVRIP) + ":" + QString::number(wDVRPort) +
//				"/\"><font color=\"#0084ff\">" + QString(sDVRIP) + ":" + QString::number(wDVRPort) + "</font></a>]");
//			return false;
//		}
//		shutdown(sock, SD_BOTH);
//		closesocket(sock);
//		if (gNegDebugMode)
//		{
//			stt->doEmitionDebugFoundData("Port check succeeded (curl_code: " + QString::number(res) + ") [<a href=\"" + QString(sDVRIP) + ":" + QString::number(wDVRPort) +
//				"/\"><font color=\"#0084ff\">" + QString(sDVRIP) + ":" + QString::number(wDVRPort) + "</font></a>]");
//		}
//		return true;
//	}
//
//	if (gNegDebugMode)
//	{
//		stt->doEmitionDebugFoundData("Port check failed - unknown socket error. [<a href=\"" + QString(sDVRIP) + ":" + QString::number(wDVRPort) +
//			"/\"><font color=\"#0084ff\">" + QString(sDVRIP) + ":" + QString::number(wDVRPort) + "</font></a>]");
//	}
//	return false;

	CURL *curl = curl_easy_init();
	if (curl != NULL) {
		curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1L);
		curl_easy_setopt(curl, CURLOPT_URL, sDVRIP);
		curl_easy_setopt(curl, CURLOPT_PORT, wDVRPort);
		int proxyPort = std::atoi(gProxyPort);
		if (proxyPort > 0 && proxyPort < 65535) curl_easy_setopt(curl, CURLOPT_PROXYPORT, proxyPort);
		curl_easy_setopt(curl, CURLOPT_PROXY, gProxyIP);
		curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, gTimeOut);
		curl_easy_setopt(curl, CURLOPT_TIMEOUT, gTimeOut);
		curl_easy_setopt(curl, CURLOPT_CONNECT_ONLY, 1L);
		int res = curl_easy_perform(curl);
		curl_easy_cleanup(curl);
		if (res != CURLE_OK) {
			if (gNegDebugMode)
			{
				/*stt->doEmitionDebugFoundData("Port check failed (curl_code: " + QString::number(res) + ") [<a href=\"" + QString(sDVRIP) + ":" + QString::number(wDVRPort) +
					"/\"><font color=\"#0084ff\">" + QString(sDVRIP) + ":" + QString::number(wDVRPort) + "</font></a>]");*/
				SOCKET eNobuffSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
				shutdown(eNobuffSocket, SD_BOTH);
				closesocket(eNobuffSocket);
				if (ENOBUFS == eNobuffSocket || ENOMEM == eNobuffSocket) {
					stt->doEmitionRedFoundData("Insufficient buffer/memory space. Sleeping for 10 sec...");
					Sleep(10000);
				}
			}
			return false;
		}
		else {
			if (gNegDebugMode)
			{
				stt->doEmitionDebugFoundData("Port check succeeded (curl_code: " + QString::number(res) + ") [<a href=\"" + QString(sDVRIP) + ":" + QString::number(wDVRPort) +
					"/\"><font color=\"#0084ff\">" + QString(sDVRIP) + ":" + QString::number(wDVRPort) + "</font></a>]");
			}
			return true;
		}
	}
	else {
		//if (gNegDebugMode)
		//{
		//	stt->doEmitionDebugFoundData("Port check failed - curl_easy_init() error. [<a href=\"" + QString(sDVRIP) + ":" + QString::number(wDVRPort) +
		//		"/\"><font color=\"#0084ff\">" + QString(sDVRIP) + ":" + QString::number(wDVRPort) + "</font></a>]");
		//}
		return false;
	}
}
int Connector::connectToPort(char* ip, int port)
{
//    if(gPingNScan)
//    {
//        if(_pingMyTarget(ip) == 0) return -2;
//    };

    std::string buffer;
    int size = 0;
	char tempIp[128] = { 0 };
	int sz = strlen(ip);
	if (443 == port) {
		strcpy(tempIp, "https://");
	}
	else if (21 == port) {
		strcpy(tempIp, "ftp://");
	}
	else {
		strcpy(tempIp, "http://");
	}
	strncat(tempIp, ip, sz > 119 ? 119 : sz);

	if (port != 37777 && port != 8000 && port != 34567 && port != 9000){
		if (port == 22) size = SSHAuth::SSHLobby(ip, port, &buffer);			//SSH
		else size = nConnect(tempIp, port, &buffer);

		if (size > 0)
		{
			++Alive;//ME2
			++found;//PieStat
			Lexems lx;
			lx.filler(tempIp, port, &buffer, size, &lx);
		}
		else if (size == -2) return -2;
	} else {
		if (portCheck(ip, port)) {
			++Alive;//ME2
			++found;//PieStat
			Lexems lx;
			lx.filler(ip, port, &buffer, size, &lx);
		};
	}
	return 0;
}