HttpOpenRequest () Wininet c++ e PHP

Question

我有这个代码，但它不工作。我通过 Postman 对其进行了测试，PHP 可以正确获取数据。问题出在 C++ 中，它没有通过 POST 发送文件。怎么了？

这个想法是让 DLL 生成 .txt 文件并将此文件 POST 到 PHP，在那里它将接收并将其插入数据库。

void PHP_Autentication (void){  
    static TCHAR frmdata[] = "-----------------------------og94kfkldjs7ekk\r\nContent-Disposition: form-data; name=\"arquivo\"; filename=\"g.txt\"\r\nContent-Type: text/plain\r\n\r\nCodex Anti-Hack\r\n-----------------------------og94kfkldjs7ekk--\r\n";
    static TCHAR hdrs[] = "Content-Type: multipart/form-data; boundary=---------------------------og94kfkldjs7ekk";
    HINTERNET hSession = InternetOpen("MyBrowser",INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0);
    if(!hSession)
    {
        PHP_DC();
    }                           
    HINTERNET hConnect = InternetConnect(hSession, _T (carrega.IP_Server_and_Hard),INTERNET_DEFAULT_HTTP_PORT, NULL, NULL, INTERNET_SERVICE_HTTP, 0, 1);
    if(!hConnect)                                      
    { 
        PHP_DC();
    }
    LPCTSTR rgpszAcceptTypes[] = {_T("*/*"), NULL};
    HINTERNET hRequest = HttpOpenRequest(hConnect, (const char*)"POST", _T("sentinela/sentinela.php"), NULL, NULL, rgpszAcceptTypes, 0, 1); 
    if(hRequest==NULL)
    {
        PHP_DC();
    }
    BOOL sent= HttpSendRequest(hRequest, hdrs, strlen(hdrs), frmdata, strlen(frmdata));
    if(!sent)
    {
        PHP_DC();
    }
    char buffer[2048] = {};
    DWORD bufferSize = sizeof(buffer);
    BOOL success = HttpQueryInfo(hRequest, HTTP_QUERY_RAW_HEADERS_CRLF, buffer, &bufferSize, NULL);
    if(!success)
    {
        PHP_DC();
    }
    std::cout << buffer << std::endl;
    ZeroMemory(buffer, sizeof(buffer));
    success = InternetReadFile(hRequest, buffer, sizeof(buffer), &bufferSize); 
    if(!success)
    {
        PHP_DC();
    }
    else
    {
        InternetCloseHandle(hSession);
        InternetCloseHandle(hConnect);
        InternetCloseHandle(hRequest);
    }
}

PHP 文件是这样的：

<?php
session_start();
define('HOST', '111.111.111.111');
define('USUARIO', 'user');
define('SENHA', 'pass');
define('DB', 'db');

$conexao = mysqli_connect(HOST,USUARIO,SENHA);
$db_select = mysqli_select_db($conexao, DB);

$arquivo_tmp = $_FILES['arquivo']['tmp_name'];
$dados = file($arquivo_tmp);

foreach($dados as $linha){

    var_dump($dados);

    $mac = $dados[0];
    $serial = $dados[1];
    $namepc = $dados[2];
    $idgame = $dados[3];
    $ip = $dados[4];
    $userpc = $dados[5];

}   

$sql = "INSERT INTO log (id, user, mac_addr, serial, uName, ip, date) VALUES ('NULL', '$idgame', 
'$mac', '$serial', '$namepc', '$ip', now())";

mysqli_query($conexao,$sql);

?>

要在 POST 中发送的文件是 .txt，其中包含：

00:00:AA:AA:00:00 123456789 桌面-11111 123456789 192.168.0.0 琼

Answer 1

您根本没有发送.txt 文件。您正在发送一个硬编码字符串"Codex Anti-Hack"。

要发送实际的.txt 文件，您可以：

• 动态分配整个 MIME 数据缓冲区，填充它，然后将其传递给HttpSendRequest()。在运行时查询文件大小以了解分配缓冲区的大小。例如：

#include <vector>
#include <memory>
#include <algorithm>
#include <type_traits>

struct HINTERNET_deleter
{
    using pointer = HINTERNET;
    // in VC2010: use this instead:
    // typedef HINTERNET pointer;

    void operator()(HINTERNET hInternet) const { InternetCloseHandle(hInternet); }
};

using HINTERNET_ptr = std::unique_ptr<std::remove_pointer<HINTERNET>::type, HINTERNET_deleter>;
// in VC2010: use this instead:
// typedef std::unique_ptr<std::remove_pointer<HINTERNET>::type, HINTERNET_deleter> HINTERNET_ptr;

struct HFILE_deleter
{
    using pointer = HANDLE;
    // in VS2010, use this instead:
    // typedef HANDLE pointer;

    void operator()(HANDLE hFile) const { if (hFile != INVALID_HANDLE_VALUE) CloseHandle(hFile); }
};

using HFILE_ptr = std::unique_ptr<std::remove_pointer<HANDLE>::type, HFILE_deleter>;
// in VS2010, use this instead:
// typedef std::unique_ptr<std::remove_pointer<HANDLE>::type, HFILE_deleter> HFILE_ptr;

bool PHP_Autentication()
{
    static char frmdata_1[] = "-----------------------------og94kfkldjs7ekk\r\n"
                                "Content-Disposition: form-data; name=\"arquivo\"; filename=\"g.txt\"\r\n"
                                "Content-Type: text/plain\r\n"
                                "\r\n";
    static DWORD frmdata_1_len = sizeof(frmdata_1) - 1;

    static char frmdata_2[] = "\r\n"
                                "-----------------------------og94kfkldjs7ekk--\r\n";
    static DWORD frmdata_2_len = sizeof(frmdata_2) - 1;

    static TCHAR hdrs[] = "Content-Type: multipart/form-data; boundary=---------------------------og94kfkldjs7ekk";
    static DWORD hdrs_len = (sizeof(hdrs) / sizeof(hdrs[0])) - 1;

    HFILE_ptr hFile( CreateFile(_T("path\\filename.txt"), GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, NULL) );
    if (hFile.get() == INVALID_HANDLE_VALUE)
    {
        // error handling...
        return false;
    }

    DWORD dwFileSize = GetFileSize(hFile.get(), NULL);
    if (dwFileSize == INVALID_FILE_SIZE)
    {
        // error handling...
        return false;
    }                          
    
    std::vector<char> frmdata(frmdata_1_len + dwFileSize + frmdata_2_len);

    std::copy_n(frmdata_1, frmdata_1_len, &frmdata[0]);

    DWORD dwOffset = frmdata_1_len;
    while (dwFileSize > 0)
    {
        DWORD dwNumRead;
        if ((!ReadFile(hFile.get(), &frmdata[dwOffset], dwFileSize, &dwNumRead, NULL)) || (dNumRead == 0))
        {
            // error handling...
            return false;
        }                          

        dwOffset += dwNumRead;
        dwFileSize -= dwNumRead;
    }
    
    std::copy_n(frmdata_2, frmdata_2_len, &frmdata[dwOffset]);

    HINTERNET_ptr hSession( InternetOpen(_T("MyBrowser"), INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0) );
    if (!hSession)
    {
        // error handling...
        return false;
    }                          

    HINTERNET_ptr hConnect( InternetConnect(hSession.get(), carrega.IP_Server_and_Hard, INTERNET_DEFAULT_HTTP_PORT, NULL, NULL, INTERNET_SERVICE_HTTP, 0, 1) );
    if (!hConnect)                                    
    {
        // error handling...
        return false;
    }                          

    LPCTSTR rgpszAcceptTypes[] = {_T("*/*"), NULL};
    HINTERNET_ptr hRequest( HttpOpenRequest(hConnect.get(), _T("POST"), _T("sentinela/sentinela.php"), NULL, NULL, rgpszAcceptTypes, 0, 1) );
    if (!hRequest)
    {
        // error handling...
        return false;
    }                          

    if (!HttpSendRequest(hRequest.get(), hdrs, hdrs_len, frmdata.data(), frmdata.size()))
    {
        // error handling...
        return false;
    }                          

    DWORD dwStatusCode, dwIndex = 0;
    if (!HttpQueryInfo(hRequest.get(), HTTP_QUERY_STATUS_CODE | HTTP_QUERY_FLAG_NUMBER, &dwStatusCode, sizeof(dwStatusCode), &dwIndex))
    {
        // error handling...
        return false;
    }                          
    
    TCHAR buffer[2048] = {};
    DWORD bufferSize = sizeof(buffer);
    dwIndex = 0;
    if (!HttpQueryInfo(hRequest.get(), HTTP_QUERY_RAW_HEADERS_CRLF, buffer, &bufferSize, &dwIndex))
    {
        // error handling...
        return false;
    }

    #ifdef UNICODE
    std::ostream &t_cout = std::wcout;
    #else
    std::ostream &t_cout = std::cout;
    #endif
    t_cout.write(buffer, bufferSize / sizeof(TCHAR));
    t_cout << std::endl;

    return ((dwStatusCode / 100) == 2);
}

• 使用HttpSendRequestEx()代替HttpSendRequest()，这样可以在MIME数据中间使用ReadFile()和InternetWriteFile()分块发送文件数据。例如：

#include <vector>
#include <memory>
#include <algorithm>
#include <type_traits>

struct HINTERNET_deleter
{
    using pointer = HINTERNET;
    // in VC2010: use this instead:
    // typedef HINTERNET pointer;

    void operator()(HINTERNET hInternet) const { InternetCloseHandle(hInternet); }
};

using HINTERNET_ptr = std::unique_ptr<std::remove_pointer<HINTERNET>::type, HINTERNET_deleter>;
// in VC2010: use this instead:
// typedef std::unique_ptr<std::remove_pointer<HINTERNET>::type, HINTERNET_deleter> HINTERNET_ptr;

struct HFILE_deleter
{
    using pointer = HANDLE;
    // in VS2010, use this instead:
    // typedef HANDLE pointer;

    void operator()(HANDLE hFile) const { if (hFile != INVALID_HANDLE_VALUE) CloseHandle(hFile); }
};

using HFILE_ptr = std::unique_ptr<std::remove_pointer<HANDLE>::type, HFILE_deleter>;
// in VS2010, use this instead:
// typedef std::unique_ptr<std::remove_pointer<HANDLE>::type, HFILE_deleter> HFILE_ptr;

bool WriteToInet(HINTERNET hRequest, LPCVOID buffer, DWORD size)
{
    LPCBYTE ptr = (LPCBYTE) buffer;
    DWORD dwNumWritten;
    
    while (size > 0)
    {
        if (!InternetWriteFile(hRequest, ptr, size, &dwNumWritten))
            return false;

        ptr += dwNumWritten;
        size -= dwNumWritten;
    }

    return true;
}

bool PHP_Autentication()
{
    static char frmdata_1[] = "-----------------------------og94kfkldjs7ekk\r\n"
                                "Content-Disposition: form-data; name=\"arquivo\"; filename=\"g.txt\"\r\n"
                                "Content-Type: text/plain\r\n"
                                "\r\n";
    static DWORD frmdata_1_len = sizeof(frmdata_1)-1;

    static char frmdata_2[] = "\r\n"
                                "-----------------------------og94kfkldjs7ekk--\r\n";
    static DWORD frmdata_2_len = sizeof(frmdata_2)-1;

    static TCHAR hdrs[] = "Content-Type: multipart/form-data; boundary=---------------------------og94kfkldjs7ekk";
    static DWORD hdrs_len = (sizeof(hdrs) / sizeof(hdrs[0])) - 1;

    HFILE_ptr hFile( CreateFile(_T("path\\filename.txt"), GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, NULL) );
    if (hFile.get() == INVALID_HANDLE_VALUE)
    {
        // error handling...
        return false;
    }

    DWORD dwFileSize = GetFileSize(hFile.get(), NULL);
    if (dwFileSize == INVALID_FILE_SIZE)
    {
        // error handling...
        return false;
    }                          

    HINTERNET_ptr hSession( InternetOpen(_T("MyBrowser"), INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0) );
    if (!hSession)
    {
        // error handling...
        return false;
    }                          

    HINTERNET_ptr hConnect( InternetConnect(hSession.get(), carrega.IP_Server_and_Hard, INTERNET_DEFAULT_HTTP_PORT, NULL, NULL, INTERNET_SERVICE_HTTP, 0, 1) );
    if (!hConnect)                                    
    {
        // error handling...
        return false;
    }                          

    LPCTSTR rgpszAcceptTypes[] = {_T("*/*"), NULL};
    HINTERNET_ptr hRequest( HttpOpenRequest(hConnect.get(), _T("POST"), _T("sentinela/sentinela.php"), NULL, NULL, rgpszAcceptTypes, INTERNET_FLAG_NO_CACHE_WRITE, 1) );
    if (!hRequest)
    {
        // error handling...
        return false;
    }                          

    INTERNET_BUFFERS buf;
    ZeroMemory(&buf, sizeof(buf));
    buf.dwStructSize = sizeof(buf);
    buf.lpcszHeader = hdrs;
    buf.dwHeadersLength = hdrs_len;
    buf.dwHeadersTotal = hdrs_len;
    buf.lpvBuffer = NULL;
    buf.dwBufferLength = 0;
    buf.dwBufferTotal = frmdata_1_len + dwFileSize + frmdata_2_len;
    buf.dwOffsetLow = 0;
    buf.dwOffsetHigh = 0;

    if (!HttpSendRequestEx(hRequest.get(), &buf, NULL, 0, 1))
    {
        // error handling...
        return false;
    }

    if (!WriteToInet(hRequest.get(), frmdata_1, frmdata_1_len))
    {
        // error handling...
        return false;
    }
    
    BYTE buffer[2048];
    while (dwFileSize > 0)
    {
        DWORD dwNumRead;
        if ((!ReadFile(hFile.get(), buffer, sizeof(buffer), &dwNumRead, NULL)) || (dwNumRead == 0))
        {
            // error handling...
            return false;
        }                          

        if (!WriteToInet(hRequest.get(), buffer, dwNumRead))
        {
            // error handling...
            return false;
        }

        dwFileSize -= dwNumRead;
    }

    if (!WriteToInet(hRequest.get(), frmdata_2, frmdata_2_len))
    {
        // error handling...
        return false;
    }

    if (!HttpEndRequest(hRequest.get(), NULL, 0, 0))
    {
        // error handling...
        return false;
    }

    DWORD dwStatusCode, dwIndex = 0;
    if (!HttpQueryInfo(hRequest.get(), HTTP_QUERY_STATUS_CODE | HTTP_QUERY_FLAG_NUMBER, &dwStatusCode, sizeof(dwStatusCode), &dwIndex))
    {
        // error handling...
        return false;
    }                          
    
    TCHAR buffer[2048] = {};
    DWORD bufferSize = sizeof(buffer);
    dwIndex = 0;
    if (!HttpQueryInfo(hRequest.get(), HTTP_QUERY_RAW_HEADERS_CRLF, buffer, &bufferSize, &dwIndex))
    {
        // error handling...
        return false;
    }

    #ifdef UNICODE
    std::ostream &t_cout = std::wcout;
    #else
    std::ostream &t_cout = std::cout;
    #endif
    t_cout.write(buffer, bufferSize / sizeof(TCHAR));
    t_cout << std::endl;

    return ((dwStatusCode / 100) == 2);
}