public InstallShieldCABExtractor(FileSystem context, string hdrFilename)
{
var fileGroups = new List <FileGroup>();
var fileGroupOffsets = new List <uint>();
hdrFile = context.Open(hdrFilename);
this.context = context;
// Strips archive number AND file extension
Name = Regex.Replace(hdrFilename, @"\d*\.[^\.]*$", "");
var signature = hdrFile.ReadUInt32();
if (signature != 0x28635349)
{
throw new InvalidDataException("Not an Installshield CAB package");
}
commonHeader = new CommonHeader(hdrFile);
cabDescriptor = new CabDescriptor(hdrFile, commonHeader);
/* unknown */ hdrFile.ReadBytes(14);
for (var i = 0U; i < MaxFileGroupCount; ++i)
{
fileGroupOffsets.Add(hdrFile.ReadUInt32());
}
hdrFile.Seek(commonHeader.CabDescriptorOffset + cabDescriptor.FileTableOffset, SeekOrigin.Begin);
directoryTable = new List <uint>();
for (var i = 0U; i < cabDescriptor.DirectoryCount; ++i)
{
directoryTable.Add(hdrFile.ReadUInt32());
}
foreach (var offset in fileGroupOffsets)
{
var nextOffset = offset;
while (nextOffset != 0)
{
hdrFile.Seek((long)nextOffset + 4 + commonHeader.CabDescriptorOffset, SeekOrigin.Begin);
var descriptorOffset = hdrFile.ReadUInt32();
nextOffset = hdrFile.ReadUInt32();
hdrFile.Seek(descriptorOffset + commonHeader.CabDescriptorOffset, SeekOrigin.Begin);
fileGroups.Add(new FileGroup(hdrFile, commonHeader.CabDescriptorOffset));
}
}
hdrFile.Seek(commonHeader.CabDescriptorOffset + cabDescriptor.FileTableOffset + cabDescriptor.FileTableOffset2, SeekOrigin.Begin);
foreach (var fileGroup in fileGroups)
{
for (var i = fileGroup.FirstFile; i <= fileGroup.LastFile; ++i)
{
AddFileDescriptorToList(i);
var fileDescriptor = fileDescriptors[i];
var fullFilePath = "{0}\\{1}\\{2}".F(fileGroup.Name, DirectoryName(fileDescriptor.DirectoryIndex), fileDescriptor.Filename);
index.Add(fullFilePath, i);
}
}
}
public InstallShieldCABCompression(Stream header, Dictionary <int, Stream> volumes)
{
this.volumes = volumes;
if (header.ReadUInt32() != 0x28635349)
{
throw new InvalidDataException("Not an Installshield CAB package");
}
header.Position += 8;
var cabDescriptorOffset = header.ReadUInt32();
header.Position = cabDescriptorOffset + 12;
var cabDescriptor = new CabDescriptor(header);
header.Position += 14;
var fileGroupOffsets = new uint[MaxFileGroupCount];
for (var i = 0; i < MaxFileGroupCount; i++)
{
fileGroupOffsets[i] = header.ReadUInt32();
}
header.Position = cabDescriptorOffset + cabDescriptor.FileTableOffset;
var directories = new DirectoryDescriptor[cabDescriptor.DirectoryCount];
for (var i = 0; i < directories.Length; i++)
{
directories[i] = new DirectoryDescriptor(header, cabDescriptorOffset + cabDescriptor.FileTableOffset);
}
var fileGroups = new List <FileGroup>();
foreach (var offset in fileGroupOffsets)
{
var nextOffset = offset;
while (nextOffset != 0)
{
header.Position = cabDescriptorOffset + (long)nextOffset + 4;
var descriptorOffset = header.ReadUInt32();
nextOffset = header.ReadUInt32();
header.Position = cabDescriptorOffset + descriptorOffset;
fileGroups.Add(new FileGroup(header, cabDescriptorOffset));
}
}
header.Position = cabDescriptorOffset + cabDescriptor.FileTableOffset + cabDescriptor.FileTableOffset2;
foreach (var fileGroup in fileGroups)
{
for (var i = fileGroup.FirstFile; i <= fileGroup.LastFile; i++)
{
header.Position = cabDescriptorOffset + cabDescriptor.FileTableOffset + cabDescriptor.FileTableOffset2 + i * 0x57;
var file = new FileDescriptor(header, i, cabDescriptorOffset + cabDescriptor.FileTableOffset);
var path = "{0}\\{1}\\{2}".F(fileGroup.Name, directories[file.DirectoryIndex].Name, file.Filename);
index[path] = file;
}
}
}
public InstallShieldCABExtractor(FileSystem context, string hdrFilename)
{
var fileGroups = new List<FileGroup>();
var fileGroupOffsets = new List<uint>();
hdrFile = context.Open(hdrFilename);
this.context = context;
// Strips archive number AND file extension
Name = Regex.Replace(hdrFilename, @"\d*\.[^\.]*$", "");
var signature = hdrFile.ReadUInt32();
if (signature != 0x28635349)
throw new InvalidDataException("Not an Installshield CAB package");
commonHeader = new CommonHeader(hdrFile);
cabDescriptor = new CabDescriptor(hdrFile, commonHeader);
/* unknown */ hdrFile.ReadBytes(14);
for (var i = 0U; i < MaxFileGroupCount; ++i)
fileGroupOffsets.Add(hdrFile.ReadUInt32());
hdrFile.Seek(commonHeader.CabDescriptorOffset + cabDescriptor.FileTableOffset, SeekOrigin.Begin);
directoryTable = new List<uint>();
for (var i = 0U; i < cabDescriptor.DirectoryCount; ++i)
directoryTable.Add(hdrFile.ReadUInt32());
foreach (var offset in fileGroupOffsets)
{
var nextOffset = offset;
while (nextOffset != 0)
{
hdrFile.Seek((long)nextOffset + 4 + commonHeader.CabDescriptorOffset, SeekOrigin.Begin);
var descriptorOffset = hdrFile.ReadUInt32();
nextOffset = hdrFile.ReadUInt32();
hdrFile.Seek(descriptorOffset + commonHeader.CabDescriptorOffset, SeekOrigin.Begin);
fileGroups.Add(new FileGroup(hdrFile, commonHeader.CabDescriptorOffset));
}
}
hdrFile.Seek(commonHeader.CabDescriptorOffset + cabDescriptor.FileTableOffset + cabDescriptor.FileTableOffset2, SeekOrigin.Begin);
foreach (var fileGroup in fileGroups)
{
for (var i = fileGroup.FirstFile; i <= fileGroup.LastFile; ++i)
{
AddFileDescriptorToList(i);
var fileDescriptor = fileDescriptors[i];
var fullFilePath = "{0}\\{1}\\{2}".F(fileGroup.Name, DirectoryName(fileDescriptor.DirectoryIndex), fileDescriptor.Filename);
index.Add(fullFilePath, i);
}
}
}
public InstallShieldCABCompression(Stream header, Dictionary<int, Stream> volumes)
{
this.volumes = volumes;
if (header.ReadUInt32() != 0x28635349)
throw new InvalidDataException("Not an Installshield CAB package");
header.Position += 8;
var cabDescriptorOffset = header.ReadUInt32();
header.Position = cabDescriptorOffset + 12;
var cabDescriptor = new CabDescriptor(header);
header.Position += 14;
var fileGroupOffsets = new uint[MaxFileGroupCount];
for (var i = 0; i < MaxFileGroupCount; i++)
fileGroupOffsets[i] = header.ReadUInt32();
header.Position = cabDescriptorOffset + cabDescriptor.FileTableOffset;
var directories = new DirectoryDescriptor[cabDescriptor.DirectoryCount];
for (var i = 0; i < directories.Length; i++)
directories[i] = new DirectoryDescriptor(header, cabDescriptorOffset + cabDescriptor.FileTableOffset);
var fileGroups = new List<FileGroup>();
foreach (var offset in fileGroupOffsets)
{
var nextOffset = offset;
while (nextOffset != 0)
{
header.Position = cabDescriptorOffset + (long)nextOffset + 4;
var descriptorOffset = header.ReadUInt32();
nextOffset = header.ReadUInt32();
header.Position = cabDescriptorOffset + descriptorOffset;
fileGroups.Add(new FileGroup(header, cabDescriptorOffset));
}
}
header.Position = cabDescriptorOffset + cabDescriptor.FileTableOffset + cabDescriptor.FileTableOffset2;
foreach (var fileGroup in fileGroups)
{
for (var i = fileGroup.FirstFile; i <= fileGroup.LastFile; i++)
{
header.Position = cabDescriptorOffset + cabDescriptor.FileTableOffset + cabDescriptor.FileTableOffset2 + i * 0x57;
var file = new FileDescriptor(header, i, cabDescriptorOffset + cabDescriptor.FileTableOffset);
var path = "{0}\\{1}\\{2}".F(fileGroup.Name, directories[file.DirectoryIndex].Name, file.Filename);
index[path] = file;
}
}
}