| Newbie | | Join Date: Jun 2009 Location: coimbatore
Posts: 1
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hello,
i am very new to vc++.i have the code. - #include "windows.h"
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#include "stdafx.h"
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// Need the following header files to access the MSI API
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#include "msi.h"
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#include "msiquery.h"
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#pragma comment(lib, "msi.lib")
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// Export the function so MSI can call it using undecorated C style name
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extern "C" _declspec(dllexport) UINT __stdcall VerifyPID(MSIHANDLE hInstall);
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// Private Function definitions
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TCHAR* GetPIDValue(TCHAR*);
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extern "C" UINT __stdcall VerifyPID(MSIHANDLE hInstall)
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{
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// Local variables
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UINT nRetVal = 0;
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UINT uiMsiRc;
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TCHAR szPidKey[MAX_PATH];
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TCHAR szSourceDir[MAX_PATH];
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TCHAR* lpszPidValue;
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DWORD dwBuffer;
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// Get the source folder for the msi project
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dwBuffer = sizeof(szSourceDir)/sizeof(TCHAR);
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uiMsiRc = MsiGetProperty(hInstall, TEXT("SourceDir"), szSourceDir, &dwBuffer);
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if (ERROR_SUCCESS != uiMsiRc)
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{
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MessageBox(NULL, "Not able to retrieve the SourceDir property. The setup may be corrupt. Please contact Technical Support.", "Setup Error", MB_OK | MB_ICONEXCLAMATION);
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return 0;
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}
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// Call function to decrypt the PID to validate against from a file stored on setup media
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lpszPidValue = GetPIDValue(szSourceDir);
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// Get the PIDKEY property value entered by the user from the active msi
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dwBuffer = sizeof(szPidKey)/sizeof(TCHAR);
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uiMsiRc = MsiGetProperty(hInstall, TEXT("PIDKEY"), szPidKey, &dwBuffer);
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if (ERROR_SUCCESS != uiMsiRc)
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{
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MessageBox(NULL, "Not able to retrieve PIDKEY property. The setup may be corrupt. Please contact Technical Support.", "Setup Error", MB_OK | MB_ICONEXCLAMATION);
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return 0;
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}
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//Insert code to check PIDKEY here
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int str = lstrcmp(szPidKey, lpszPidValue);
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//If PIDKEY passes check
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if (str == 0)
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MsiSetProperty(hInstall, "PIDCHECK", "TRUE");
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//If PIDKEY doesn't pass check
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else
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{
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MsiSetProperty(hInstall, "PIDCHECK", "FALSE");
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MessageBox(NULL, "Please enter the correct product registration code!", "Invalid Key", MB_OK | MB_ICONINFORMATION);
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}
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return 0;
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}
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// GetPIDValue is used to locate and decrypt a key file on the setup media
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// that contains the PID string to validate against.
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TCHAR* GetPIDValue(TCHAR* lpszSourceDir)
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{
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// lpszSourceDir contains the fully qualified path to the location where the setup is running.
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// For example, suppose the msi is located on a CD in the folder "\Setup\MySetup.msi".
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// The user is running the CD in the D: drive.
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// lpszSourceDir will have a value of "D:\Setup\".
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// Note that the trailing slash is included!
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// TO DO: Concatenate key file path, example lpszSourceDir + "MyKeyFile.dat"
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// TO DO: Read key file from source media
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// TO DO: Code decryption algorithm for key file
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// For this example, simply return a literal PID key of format <### - #######>
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return "123 - 4567890";
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}
how can i attach "MyKeyFile.dat" which i given in comment line.
thanks in advance,
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