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Correct number of files for non-contiguous ISOs

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Deterous
2024-01-31 20:13:42 +09:00
parent df9bb8c7f2
commit 07a3a3a7f1
5 changed files with 52 additions and 23 deletions
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LibIRD/IRD.cs
+28 -8
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@@ -658,7 +658,7 @@ namespace LibIRD
}
// Read PS3 Metadata from PARAM.SFO
using (DiscUtils.Streams.SparseStream s = reader.OpenFile(Path.Combine($"{Path.DirectorySeparatorChar}", "PS3_GAME", "PARAM.SFO"), FileMode.Open, FileAccess.Read))
using (DiscUtils.Streams.SparseStream s = reader.OpenFile("\\PS3_GAME\\PARAM.SFO", FileMode.Open, FileAccess.Read))
{
// Parse PARAM.SFO file
ParamSFO paramSFO = new(s);
@@ -710,7 +710,7 @@ namespace LibIRD
// TODO: Speed up program by hashing regions and files at the same time (read from filesystem only once)
// Recursively count all files in ISO to allocate file arrays
DiscDirectoryInfo rootDir = reader.GetDirectoryInfo($"{Path.DirectorySeparatorChar}");
DiscDirectoryInfo rootDir = reader.GetDirectoryInfo("\\");
FileCount = 0;
CountFiles(rootDir);
FileKeys = new long[FileCount];
@@ -721,7 +721,12 @@ namespace LibIRD
FileCount = 0;
HashFiles(fs, reader, rootDir);
if (FileCount != fileCount)
throw new InvalidFileSystemException("Unexpected ISO filesystem error: ");
{
Console.WriteLine($"Likely contains non-contiguous files: detected {FileCount} out of {fileCount} expected files");
long[] tempFileKeys = FileKeys;
Array.Resize(ref tempFileKeys, (int)FileCount);
FileKeys = tempFileKeys;
}
Array.Sort(FileKeys, FileHashes);
}
@@ -739,7 +744,7 @@ namespace LibIRD
private void GetSystemVersion(FileStream fs, CDReader reader)
{
// Determine PUP file offset via cluster
DiscUtils.Streams.Range<long, long>[] updateClusters = reader.PathToClusters(Path.Combine($"{Path.DirectorySeparatorChar}", "PS3_UPDATE", "PS3UPDAT.PUP"));
DiscUtils.Streams.Range<long, long>[] updateClusters = reader.PathToClusters("\\PS3_UPDATE\\PS3UPDAT.PUP");
if (updateClusters == null && updateClusters.Length == 0 && updateClusters[0] == null)
throw new InvalidFileSystemException("Invalid file extents for PS3UPDAT.PUP");
@@ -782,7 +787,7 @@ namespace LibIRD
private void GetHeader(FileStream fs, CDReader reader)
{
// Determine the extent of the header via cluster (Sector 0 to first data sector)
DiscUtils.Streams.Range<long, long>[] sfbClusters = reader.PathToClusters("PS3_DISC.SFB");
DiscUtils.Streams.Range<long, long>[] sfbClusters = reader.PathToClusters("\\PS3_DISC.SFB");
if (sfbClusters == null && sfbClusters.Length == 0 && sfbClusters[0] == null)
throw new InvalidFileSystemException("Invalid file extents for PS3_DISC.SFB");
// End of header is at beginning of first byte of dedicated cluster
@@ -927,11 +932,26 @@ namespace LibIRD
DiscUtils.Streams.Range<long, long>[] fileClusters = reader.PathToClusters(filePath);
// If invalid clusters were returned, we can't hash this file
if (fileClusters == null && fileClusters.Length == 0 && fileClusters[0] == null)
if (fileClusters == null && fileClusters.Length == 0)
throw new InvalidFileSystemException($"Unexpected file extents for {filePath}");
// Determine file offset
int firstSector = (int)(fileClusters[0].Offset); // TODO: Check smallest of all [i] rather than take [0]
// Determine smallest file offset as first sector
long smallestOffset = fileClusters[0].Offset;
for (int i = 1; i < fileClusters.Length; i++)
{
if (fileClusters[i] == null)
throw new InvalidFileSystemException($"Unexpected file extents for {filePath}");
if (fileClusters[i].Offset < smallestOffset)
smallestOffset = fileClusters[i].Offset;
}
int firstSector = (int)(smallestOffset);
// If already encountered file offset, skip this file
if (Array.Exists(FileKeys, element => element == firstSector))
continue;
// Add file offset to keys
FileKeys[FileCount] = firstSector;
// Determine whether file is in encrypted or decrypted region