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/*
*                                 http_post.cpp 
*
* by Uday Chitragar - 2004/Dec/01
* 
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any
* damages arising from the use of this software.
*
* Permission is granted to anyone to use this software for any
* purpose, including commercial applications, and to alter it and
* redistribute it freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must
* not claim that you wrote the original software. If you use this
* software in a product, an acknowledgment in the product documentation
* would be appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and
* must not be misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
* 
* */

/* 
* Notes:
* This source demonstrates sending HTTP POST request to webserver from C++
* This uses sockets hence can be compiled on Linux, UNIX, Win
*/


//For commn
#include "StdAfx.h"
#include "MyTray.h"
#include <Winsock2.h>
#include "http_post.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// Chttp_post

Chttp_post::Chttp_post()
{
}

Chttp_post::~Chttp_post()
{
}


// Do not edit the following lines, which are needed by ClassWizard.

BEGIN_MESSAGE_MAP(Chttp_post, CDialog)
	//{{AFX_MSG_MAP(Chttp_post)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()


/////////////////////////////////////////////////////////////////////////////
// Chttp_post member functions

#define SEND_RQ(MSG) \
	/*cout<<send_str;*/ \
	send(sock,MSG,strlen(MSG),0);



//<exe> hostname api parameters
//	api = napr. Request URI: /prihlasenie.phtml?KDE=wap.azet.sk/index.phtml~&WAP=1
//	hostname= www.... aj http ?
//	loginForm=nick=c-ice&heslo="tu je tajne heslo"&PosliForm=Prihl%C3%A1si%C5%A5
//	message= 200 ?
CString Chttp_post::requestEx (struct structRequest strcReq) 
{

	WSADATA	WsaData;
	WSAStartup (0x0101, &WsaData);


	sockaddr_in       sin;
	int sock = socket (AF_INET, SOCK_STREAM, 0);
	if (sock == -1) {
		return "-100";
	}
	sin.sin_family = AF_INET;
	sin.sin_port = htons( (unsigned short)80);

	struct hostent * host_addr = gethostbyname(strcReq.sockHostName);
	if(host_addr==NULL) {
		AfxMessageBox( "Unable to locate host");
		return "-103";
	}
	sin.sin_addr.s_addr = *((int*)*host_addr->h_addr_list) ;
	//AfxMessageBox("Port :%s , Address :%s ",sin.sin_port,sin.sin_addr.s_addr);

	if( connect (sock,(const struct sockaddr *)&sin, sizeof(sockaddr_in) ) == -1 ) {
		AfxMessageBox("connect failed") ;
		return "-101";
	}

	CString send_str;

	SEND_RQ(strcReq.strOptional);
	SEND_RQ(strcReq.strURIRequestApi);
	SEND_RQ(strcReq.strVersion);
	SEND_RQ(strcReq.strHost);
	SEND_RQ(strcReq.strUserAgent);
	SEND_RQ(strcReq.strAcceptFiles);

	char content_header[100];
	sprintf(content_header,"Content-Length: %i\r\n",strlen(strcReq.strTextData));

	SEND_RQ(strcReq.strAcceptLang);
	SEND_RQ(strcReq.strAcceptEncoding);
	SEND_RQ(strcReq.strAcceptCharset);
	SEND_RQ(strcReq.strKeepLive);
	SEND_RQ(strcReq.strConnection);
	if (strcReq.strReferer!="")
		SEND_RQ(strcReq.strReferer);
	if (strcReq.strContentType!="")
		SEND_RQ(strcReq.strContentType);
	if (strcReq.strTextData!="")
		SEND_RQ(content_header);
	SEND_RQ("\r\n");
	if (strcReq.strTextData!="")
		SEND_RQ(strcReq.strTextData);

	//AfxMessageBox("####HEADER####");
	char c1[1];
	CString message;
	int l,line_length;
	bool loop = true;
	bool bFound = false;
	bool bOk = false;
	bool bRecv = false;
	int iLocationTest=-1,iEndTest=-1,iRPEnd=-1,iRPEndTest=0;
	do{
		loop=true;
		iRPEnd=message.GetLength();
		while(loop) {
			l = recv(sock, c1, 1, 0);
			if(l<0) loop = false;
			if(message.Find("</html>") != -1)loop=false;
			if(c1[0]=='\n') {
				if(line_length == 0) loop = false;

				line_length = 0;
				if(message.Find("302") != -1)
					bFound = true;
				if(message.Find("200 OK") != -1)
					bOk = true;
			}
			else if(c1[0]!='\r') line_length++;
			//_DEBUG_PRINT( cout<<c1[0]);
			message += c1[0];
		}
		iLocationTest=message.Find("Location: ");
		iEndTest=message.Find("</html>");
		//if(strcReq.strOptional.Find("GET")!=-1)iRPEnd=-1;
		//	else iRPEnd=strcReq.sockHostName.Find("rpx.azet.sk");//aby sa cyklus ukoncil pri odoslani RP :)
		iRPEndTest=message.GetLength()-1;
	}while((iLocationTest==-1)&&(iEndTest==-1)&&(iRPEnd!=iRPEndTest)&&(bFound!=true));
	WSACleanup( );
	return message;
}

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// http_post.h : header file
//
#if !defined(AFX_HTTP_POST_H__91365852_B4AF_4381_B1AB_35454719C9E8__INCLUDED_)
#define AFX_HTTP_POST_H__91365852_B4AF_4381_B1AB_35454719C9E8__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000


/////////////////////////////////////////////////////////////////////////////
// Chttp_post command target

class Chttp_post : public CDialog
{
// Construction
public:
	Chttp_post();
// Attributes
public:

	struct structRequest{
		CString sockHostName; //napr. "moje.azet.sk"
		CString strOptional;//="POST";	//or GET or PUT
		CString strURIRequestApi;	//Request URI= "/prihlasenie.phtml?KDE=wap.azet.sk/index.phtml~&WAP=1"
		CString strVersion;//=" HTTP/1.1\r\n";
		CString strHost;	// "Host: moje.azet.sk\r\n"
		CString strUserAgent;//="User-Agent: Mozilla/4.0\r\n";
		CString strAcceptFiles;//="Accept: text/html\r\n";
		CString strAcceptLang;//="Accept-Language: sk,cs;q=0.8,en-us;q=0.5,en;q=0.3\r\n";
		CString strAcceptEncoding;//="Accept-Encoding: gzip, deflate\r\n";
		CString strAcceptCharset;//="Accept-Charset: ISO-8859-2,utf-8;q=0.7,*;q=0.7\r\n";
		CString strKeepLive;//="Keep-Alive: 300\r\n";
		CString strConnection;//="Connection: keep-alive\r\n";
		CString strReferer;			//"Referer: http://moje.azet.sk/prihlasenie.phtml?&WAP=1&KDE=wap.azet.sk/index.phtml~\r\n"
		CString strContentType;//="Content-Type: application/x-www-form-urlencoded\r\n";
		//CString strContentLenght;	//"Content-Length: %i\r\n",strlen(loginForm)
		CString strTextData;		//loginForm="nick=c-ice&heslo="tu je tajne heslo"&PosliForm=Prihl%C3%A1si%C5%A5"
	} structRequest;
// Operations
public:

// Overrides
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(Chttp_post)
	//}}AFX_VIRTUAL

// Implementation
public:
	virtual ~Chttp_post();

	// Generated message map functions
public:
	
	//{{AFX_MSG(Chttp_post)
		static CString requestEx (struct structRequest strcReq); //structure to get all data check http_post.h
		// NOTE - the ClassWizard will add and remove member functions here.
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

/////////////////////////////////////////////////////////////////////////////

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_HTTP_POST_H__91365852_B4AF_4381_B1AB_35454719C9E8__INCLUDED_)

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...
using namespace System;
using namespace std;
using namespace System::Net;
using namespace System::Text;
using namespace System::IO;

...

string get_page(String ^loginurl){

	HttpWebRequest^ myReq = dynamic_cast<HttpWebRequest^>(WebRequest::Create(loginurl));
	WebResponse ^ WebResponse = myReq->GetResponse();
	System::IO::Stream ^WebStream = WebResponse->GetResponseStream();
	Encoding^ encode = System::Text::Encoding::GetEncoding( "utf-8" );
	StreamReader^ readStream = gcnew StreamReader( WebStream,encode );
	array<Char>^ read = gcnew array<Char>(256);
	int count = readStream->Read( read, 0, 256 );

	string out = "";
	while ( count > 0 ){
		// Dumps the 256 characters on a String* and displays the String* to the console.
		String^ str = gcnew String( read,0,count );
		MessageBox::Show(str);
		out.append(systemToStd(str));
		count = readStream->Read( read, 0, 256 );
	}

	// Cleanup
	WebResponse->Close();
	readStream->Close();

	return out;


}