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8.2

Internet connection post method using wininet.dll

Asked by CSecurity in C++ Programming Language, C Programming Language, Windows Programming

Tags: C++, C, internet connection, http, post method

Hello
I have a application that has a file submit section and I want to post a file to my website. I have a php page that accepts incoming file and stores it in the server. I want to do it using wininet.dll not C++ library functions in winsock2.h and ws2_32.dll
so, I got the first code of jkr in here:
http://www.experts-exchange.com/Programming/Languages/CPP/Q_21608494.html
it works for GET method but I want to post a file using it. so, I changed a little it but dunno how to post a file using it yet! :(

the php page's code is:
<?php
$msg = copy($_FILES[MyFile][tmp_name],$_FILES[MyFile][name]) ? "Yes" : "No";
echo $msg;
?>
<form ENCTYPE="multipart/form-data" ACTION="" METHOD="POST">
<input NAME="MyFile" TYPE="file">
<input VALUE="Upload!" TYPE="submit"></form>


thank you very much
regards 
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HINTERNET hSession = InternetOpen("Unknown",INTERNET_OPEN_TYPE_DIRECT,NULL,NULL,0);
    HINTERNET hConnection = InternetConnect(hSession,
                                            "localhost", //argv[1],  // Server
                                            INTERNET_DEFAULT_HTTP_PORT,
                                            NULL,     // Username
                                            NULL,     // Password
                                            INTERNET_SERVICE_HTTP,
                                            0,        // Synchronous
                                            NULL);    // No Context
    HINTERNET hRequest = HttpOpenRequest(hConnection,
                                         "GET",
                                         "uploader.php",
                                         NULL,    // Default HTTP Version
                                         NULL,    // No Referer
                                         (const char**)"*/*\0", // Accept anything
                                         0,       // Flags
                                         NULL);   // No Context
    HttpSendRequest(hRequest,
                    NULL,    // No extra headers
                    0,       // Header length
                    NULL,    // No Body
                    0);      // Body length
    DWORD dwContentLen;
    DWORD dwBufLen = sizeof(dwContentLen);
    if(HttpQueryInfo(hRequest,
                      HTTP_QUERY_CONTENT_LENGTH | HTTP_QUERY_FLAG_NUMBER,
                      (LPVOID)&dwContentLen, //Address of the buffer that receives the information
                      &dwBufLen, //Address of a value that contains the length of the data buffer
                      0))
    {
        // You have a content length so you can calculate percent complete
        char *pData = (char*)GlobalAlloc(GMEM_FIXED, dwContentLen + 1);
        DWORD dwReadSize = dwContentLen;
        DWORD dwBytesRead;
 
        InternetReadFile(hRequest, pData, dwReadSize, &dwBytesRead);
        // Null terminate data
        pData[dwContentLen] = 0;
 
        // Display
        cout << endl << "Download Complete" << endl;
        cout << pData;
    }
    else
    {
        DWORD err = GetLastError();
        // No content length...
        // Just read until we are done.
        char pData[100];
        DWORD dwBytesRead = 1;
        while (dwBytesRead)
        {
            InternetReadFile(hRequest, pData, 99, &dwBytesRead);
            pData[dwBytesRead] = 0;
            cout << pData;
        }
    }
[+][-]04/05/09 12:36 PM, ID: 24072662Expert Comment

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[+][-]04/06/09 12:48 AM, ID: 24075052Accepted Solution

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About this solution

Zones: C++ Programming Language, C Programming Language, Windows Programming
Tags: C++, C, internet connection, http, post method
Sign Up Now!
Solution Provided By: CSecurity
Participating Experts: 1
Solution Grade: A
 
[+][-]04/06/09 03:22 AM, ID: 24075811Author Comment

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[+][-]04/07/09 12:59 PM, ID: 24091287Author Comment

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