/// <summary>
/// Create an archive object from a filename, if possible
/// </summary>
/// <param name="input">Name of the file to create the archive from</param>
/// <returns>Archive object representing the inputs</returns>
public static BaseArchive Create(string input)
{
BaseArchive archive = null;
// First get the archive type
FileType?at = GetFileType(input);
// If we got back null, then it's not an archive, so we we return
if (at == null)
{
return(archive);
}
// Create the archive based on the type
staticLogger.Verbose($"Found archive of type: {at}");
switch (at)
{
case FileType.GZipArchive:
archive = new GZipArchive(input);
break;
case FileType.RarArchive:
archive = new RarArchive(input);
break;
case FileType.SevenZipArchive:
archive = new SevenZipArchive(input);
break;
case FileType.TapeArchive:
archive = new TapeArchive(input);
break;
case FileType.ZipArchive:
archive = new ZipArchive(input);
break;
default:
// We ignore all other types for now
break;
}
return(archive);
}
/// <summary>
/// Get the content-detectable protections associated with a single path
/// </summary>
/// <param name="file">Path to the file to scan</param>
/// <returns>Dictionary of list of strings representing the found protections</returns>
private Dictionary <string, List <string> > GetInternalProtections(string file)
{
// Quick sanity check before continuing
if (!File.Exists(file))
{
return(null);
}
// Initialze the protections found
var protections = new Dictionary <string, List <string> >();
// Get the extension for certain checks
string extension = Path.GetExtension(file).ToLower().TrimStart('.');
// Open the file and begin scanning
using (FileStream fs = File.OpenRead(file))
{
// Get the first 16 bytes for matching
byte[] magic = new byte[16];
try
{
fs.Read(magic, 0, 16);
fs.Seek(-16, SeekOrigin.Current);
}
catch
{
// We don't care what the issue was, we can't read or seek the file
return(null);
}
#region Non-Archive File Types
// Executable
if (ScanAllFiles || new Executable().ShouldScan(magic))
{
var subProtections = new Executable().Scan(this, fs, file);
Utilities.AppendToDictionary(protections, subProtections);
}
// Text-based files
if (ScanAllFiles || new Textfile().ShouldScan(magic, extension))
{
var subProtections = new Textfile().Scan(this, fs, file);
Utilities.AppendToDictionary(protections, subProtections);
}
#endregion
#region Archive File Types
// If we're scanning archives, we have a few to try out
if (ScanArchives)
{
// 7-Zip archive
if (new SevenZip().ShouldScan(magic))
{
var subProtections = new SevenZip().Scan(this, fs, file);
Utilities.PrependToKeys(subProtections, file);
Utilities.AppendToDictionary(protections, subProtections);
}
// BFPK archive
if (new BFPK().ShouldScan(magic))
{
var subProtections = new BFPK().Scan(this, fs, file);
Utilities.PrependToKeys(subProtections, file);
Utilities.AppendToDictionary(protections, subProtections);
}
// BZip2
if (new BZip2().ShouldScan(magic))
{
var subProtections = new BZip2().Scan(this, fs, file);
Utilities.PrependToKeys(subProtections, file);
Utilities.AppendToDictionary(protections, subProtections);
}
// GZIP
if (new GZIP().ShouldScan(magic))
{
var subProtections = new GZIP().Scan(this, fs, file);
Utilities.PrependToKeys(subProtections, file);
Utilities.AppendToDictionary(protections, subProtections);
}
// InstallShield Cabinet
if (file != null && new InstallShieldCAB().ShouldScan(magic))
{
var subProtections = new InstallShieldCAB().Scan(this, file);
Utilities.PrependToKeys(subProtections, file);
Utilities.AppendToDictionary(protections, subProtections);
}
// Microsoft Cabinet
if (file != null && new MicrosoftCAB().ShouldScan(magic))
{
var subProtections = new MicrosoftCAB().Scan(this, file);
Utilities.PrependToKeys(subProtections, file);
Utilities.AppendToDictionary(protections, subProtections);
}
// MSI
if (file != null && new MSI().ShouldScan(magic))
{
var subProtections = new MSI().Scan(this, file);
Utilities.PrependToKeys(subProtections, file);
Utilities.AppendToDictionary(protections, subProtections);
}
// MPQ archive
if (file != null && new MPQ().ShouldScan(magic))
{
var subProtections = new MPQ().Scan(this, file);
Utilities.PrependToKeys(subProtections, file);
Utilities.AppendToDictionary(protections, subProtections);
}
// PKZIP archive (and derivatives)
if (new PKZIP().ShouldScan(magic))
{
var subProtections = new PKZIP().Scan(this, fs, file);
Utilities.PrependToKeys(subProtections, file);
Utilities.AppendToDictionary(protections, subProtections);
}
// RAR archive
if (new RAR().ShouldScan(magic))
{
var subProtections = new RAR().Scan(this, fs, file);
Utilities.PrependToKeys(subProtections, file);
Utilities.AppendToDictionary(protections, subProtections);
}
// Tape Archive
if (new TapeArchive().ShouldScan(magic))
{
var subProtections = new TapeArchive().Scan(this, fs, file);
Utilities.PrependToKeys(subProtections, file);
Utilities.AppendToDictionary(protections, subProtections);
}
// Valve archive formats
if (file != null && new Valve().ShouldScan(magic))
{
var subProtections = new Valve().Scan(this, file);
Utilities.PrependToKeys(subProtections, file);
Utilities.AppendToDictionary(protections, subProtections);
}
// XZ
if (new XZ().ShouldScan(magic))
{
var subProtections = new XZ().Scan(this, fs, file);
Utilities.PrependToKeys(subProtections, file);
Utilities.AppendToDictionary(protections, subProtections);
}
}
#endregion
}
// Clear out any empty keys
Utilities.ClearEmptyKeys(protections);
return(protections);
}