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Fix cross track detection in DiscJuggler disc images. Fixes #398

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This commit is contained in:
Natalia Portillo
2020-11-04 02:46:40 +00:00
parent 6b741992af
commit 7723fc2d0d
1 changed files with 18 additions and 15 deletions
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33
Aaru.Images/DiscJuggler/Read.cs
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@@ -760,9 +760,11 @@ namespace Aaru.DiscImages
public byte[] ReadSectors(ulong sectorAddress, uint length)
{
foreach(KeyValuePair<uint, ulong> kvp in from kvp in _offsetmap where sectorAddress >= kvp.Value
foreach(KeyValuePair<uint, ulong> kvp in from kvp in _offsetmap where sectorAddress >= kvp.Value
from track in Tracks where track.TrackSequence == kvp.Key
where sectorAddress < track.TrackEndSector select kvp)
where sectorAddress - kvp.Value <
(track.TrackEndSector - track.TrackStartSector) + 1
select kvp)
return ReadSectors(sectorAddress - kvp.Value, length, kvp.Key);
throw new ArgumentOutOfRangeException(nameof(sectorAddress), $"Sector address {sectorAddress} not found");
@@ -770,11 +772,11 @@ namespace Aaru.DiscImages
public byte[] ReadSectorsTag(ulong sectorAddress, uint length, SectorTagType tag)
{
foreach(KeyValuePair<uint, ulong> kvp in _offsetmap.
Where(kvp => sectorAddress >= kvp.Value).
Where(kvp => Tracks.
Where(track => track.TrackSequence == kvp.Key).
Any(track => sectorAddress < track.TrackEndSector)))
foreach(KeyValuePair<uint, ulong> kvp in from kvp in _offsetmap where sectorAddress >= kvp.Value
from track in Tracks where track.TrackSequence == kvp.Key
where sectorAddress - kvp.Value <
(track.TrackEndSector - track.TrackStartSector) + 1
select kvp)
return ReadSectorsTag(sectorAddress - kvp.Value, length, kvp.Key, tag);
throw new ArgumentOutOfRangeException(nameof(sectorAddress), $"Sector address {sectorAddress} not found");
@@ -797,9 +799,9 @@ namespace Aaru.DiscImages
if(aaruTrack is null)
throw new ArgumentOutOfRangeException(nameof(track), "Track does not exist in disc image");
if(length + sectorAddress > aaruTrack.TrackEndSector)
if(length + sectorAddress > (aaruTrack.TrackEndSector - aaruTrack.TrackStartSector) + 1)
throw new ArgumentOutOfRangeException(nameof(length),
$"Requested more sectors ({length + sectorAddress}) than present in track ({aaruTrack.TrackEndSector}), won't cross tracks");
$"Requested more sectors ({length + sectorAddress}) than present in track ({(aaruTrack.TrackEndSector - aaruTrack.TrackStartSector) + 1}), won't cross tracks");
uint sectorOffset;
uint sectorSize;
@@ -918,9 +920,9 @@ namespace Aaru.DiscImages
if(aaruTrack is null)
throw new ArgumentOutOfRangeException(nameof(track), "Track does not exist in disc image");
if(length + sectorAddress > aaruTrack.TrackEndSector)
if(length + sectorAddress > (aaruTrack.TrackEndSector - aaruTrack.TrackStartSector) + 1)
throw new ArgumentOutOfRangeException(nameof(length),
$"Requested more sectors ({length + sectorAddress}) than present in track ({aaruTrack.TrackEndSector}), won't cross tracks");
$"Requested more sectors ({length + sectorAddress}) than present in track ({(aaruTrack.TrackEndSector - aaruTrack.TrackStartSector) + 1}), won't cross tracks");
if(aaruTrack.TrackType == TrackType.Data)
throw new ArgumentException("Unsupported tag requested", nameof(tag));
@@ -1170,8 +1172,9 @@ namespace Aaru.DiscImages
{
foreach(KeyValuePair<uint, ulong> kvp in from kvp in _offsetmap where sectorAddress >= kvp.Value
from track in Tracks where track.TrackSequence == kvp.Key
where sectorAddress - kvp.Value <
track.TrackEndSector - track.TrackStartSector select kvp)
where sectorAddress - kvp.Value <
(track.TrackEndSector - track.TrackStartSector) + 1
select kvp)
return ReadSectorsLong(sectorAddress - kvp.Value, length, kvp.Key);
throw new ArgumentOutOfRangeException(nameof(sectorAddress), $"Sector address {sectorAddress} not found");
@@ -1194,9 +1197,9 @@ namespace Aaru.DiscImages
if(aaruTrack is null)
throw new ArgumentOutOfRangeException(nameof(track), "Track does not exist in disc image");
if(length + sectorAddress > aaruTrack.TrackEndSector)
if(length + sectorAddress > (aaruTrack.TrackEndSector - aaruTrack.TrackStartSector) + 1)
throw new ArgumentOutOfRangeException(nameof(length),
$"Requested more sectors ({length + sectorAddress}) than present in track ({aaruTrack.TrackEndSector}), won't cross tracks");
$"Requested more sectors ({length + sectorAddress}) than present in track ({(aaruTrack.TrackEndSector - aaruTrack.TrackStartSector) + 1}), won't cross tracks");
uint sectorSize = (uint)aaruTrack.TrackRawBytesPerSector;
uint sectorSkip = 0;