public MsiPackage(string path)
{
if (!File.Exists(path))
{
throw new Exception("Package not found");
}
if (!MsiApi.VerifyPackage(path))
{
throw new Exception("Package is invalid");
}
Path = path;
}
protected override string GetProperty(string propName, int propSize = 32)
{
// Open Database
var dbResult = MsiApi.MsiOpenDatabase(Path, MsiApi.MsiDatabasePersist.Readonly, out IntPtr db);
if (dbResult != MsiApi.OpenDatabaseError.Success)
{
throw new Exception($"Failed to open package database: {Enum.GetName(dbResult.GetType(), dbResult)}");
}
// Open View
var viewResult = MsiApi.MsiDatabaseOpenView(db, $"SELECT Value FROM Property WHERE Property='{propName}'", out IntPtr view);
if (viewResult != MsiApi.DatabaseOpenViewError.Success)
{
MsiApi.MsiCloseHandle(db);
throw new Exception($"Failed to open database view: {Enum.GetName(viewResult.GetType(), viewResult)}");
}
// Execute View
var execResult = MsiApi.MsiViewExecute(view, IntPtr.Zero);
if (execResult != MsiApi.ViewExecuteError.Success)
{
MsiApi.MsiViewClose(view);
MsiApi.MsiCloseHandle(db);
throw new Exception($"Failed to execute view: {Enum.GetName(execResult.GetType(), execResult)}");
}
// Fetch Record
var recordResult = MsiApi.MsiViewFetch(view, out IntPtr record);
if (recordResult != MsiApi.ViewFetchError.Success)
{
MsiApi.MsiViewClose(view);
MsiApi.MsiCloseHandle(db);
throw new Exception($"Failed to fetch a record: {Enum.GetName(recordResult.GetType(), recordResult)}");
}
// Get Value
var value = GetRecordValue(record, 1);
var r3 = MsiApi.MsiCloseHandle(db);
var r2 = MsiApi.MsiCloseHandle(view);
var r1 = MsiApi.MsiCloseHandle(record);
return(value);
}
private string GetRecordValue(IntPtr record, int field, int valueSize = 32)
{
var buffer = new StringBuilder(valueSize);
var result = MsiApi.MsiRecordGetString(record, field, buffer, ref valueSize);
if (result == MsiApi.RecordGetStringError.MoreData)
{
return(GetRecordValue(record, field, valueSize + 1));
}
if (result != MsiApi.RecordGetStringError.Success)
{
return(null);
}
return(buffer.ToString());
}
protected override string GetProperty(string propName, int propSize = 32)
{
var buffer = new StringBuilder(propSize);
var result = MsiApi.MsiGetProductInfo($"{{{ProductCode}}}", propName, buffer, ref propSize);
if (result == MsiApi.GetProductInfoError.MoreData)
{
return(GetProperty(propName, propSize + 1));
}
if (result != MsiApi.GetProductInfoError.Success)
{
return(null);
}
return(buffer.ToString());
}
