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Implement Qualcomm Sahara VIP and fix a few bugs

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* Qualcomm Sahara VIP
* Project Cleanup
* Allow unlocking an already unlocked phone
This commit is contained in:
Gustave Monce
2021-08-11 14:33:49 +02:00
parent 9f4c92f437
commit c5fcb1ec8d
72 changed files with 987 additions and 861 deletions
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DiscUtils/DiscUtils.Fat/FatBuffer.cs
+25 -35
View File
@@ -71,15 +71,13 @@ namespace DiscUtils.Fat
{
get
{
switch (_type)
return _type switch
{
case FatType.Fat12:
return _buffer.Length / 3 * 2;
case FatType.Fat16:
return _buffer.Length / 2;
default: // FAT32
return _buffer.Length / 4;
}
FatType.Fat12 => _buffer.Length / 3 * 2,
FatType.Fat16 => _buffer.Length / 2,
// FAT32
_ => _buffer.Length / 4,
};
}
}
@@ -95,32 +93,24 @@ namespace DiscUtils.Fat
internal bool IsEndOfChain(uint val)
{
switch (_type)
return _type switch
{
case FatType.Fat12:
return (val & 0x0FFF) >= 0x0FF8;
case FatType.Fat16:
return (val & 0xFFFF) >= 0xFFF8;
case FatType.Fat32:
return (val & 0x0FFFFFF8) >= 0x0FFFFFF8;
default:
throw new ArgumentException("Unknown FAT type");
}
FatType.Fat12 => (val & 0x0FFF) >= 0x0FF8,
FatType.Fat16 => (val & 0xFFFF) >= 0xFFF8,
FatType.Fat32 => (val & 0x0FFFFFF8) >= 0x0FFFFFF8,
_ => throw new ArgumentException("Unknown FAT type"),
};
}
internal bool IsBadCluster(uint val)
{
switch (_type)
return _type switch
{
case FatType.Fat12:
return (val & 0x0FFF) == 0x0FF7;
case FatType.Fat16:
return (val & 0xFFFF) == 0xFFF7;
case FatType.Fat32:
return (val & 0x0FFFFFF8) == 0x0FFFFFF7;
default:
throw new ArgumentException("Unknown FAT type");
}
FatType.Fat12 => (val & 0x0FFF) == 0x0FF7,
FatType.Fat16 => (val & 0xFFFF) == 0xFFF7,
FatType.Fat32 => (val & 0x0FFFFFF8) == 0x0FFFFFF7,
_ => throw new ArgumentException("Unknown FAT type"),
};
}
internal uint GetNext(uint cluster)
@@ -138,9 +128,9 @@ namespace DiscUtils.Fat
if ((cluster & 1) != 0)
{
return
(uint)((EndianUtilities.ToUInt16LittleEndian(_buffer, (int)(cluster + cluster / 2)) >> 4) & 0x0FFF);
(uint)((EndianUtilities.ToUInt16LittleEndian(_buffer, (int)(cluster + (cluster / 2))) >> 4) & 0x0FFF);
}
return (uint)(EndianUtilities.ToUInt16LittleEndian(_buffer, (int)(cluster + cluster / 2)) & 0x0FFF);
return (uint)(EndianUtilities.ToUInt16LittleEndian(_buffer, (int)(cluster + (cluster / 2))) & 0x0FFF);
}
internal void SetEndOfChain(uint cluster)
@@ -179,19 +169,19 @@ namespace DiscUtils.Fat
}
else
{
uint offset = cluster + cluster / 2;
uint offset = cluster + (cluster / 2);
MarkDirty(offset);
MarkDirty(offset + 1); // On alternate sector boundaries, cluster info crosses two sectors
ushort maskedOldVal;
if ((cluster & 1) != 0)
{
next = next << 4;
next <<= 4;
maskedOldVal = (ushort)(EndianUtilities.ToUInt16LittleEndian(_buffer, (int)offset) & 0x000F);
}
else
{
next = next & 0x0FFF;
next &= 0x0FFF;
maskedOldVal = (ushort)(EndianUtilities.ToUInt16LittleEndian(_buffer, (int)offset) & 0xF000);
}
@@ -230,7 +220,7 @@ namespace DiscUtils.Fat
internal List<uint> GetChain(uint head)
{
List<uint> result = new List<uint>();
List<uint> result = new();
if (head != 0)
{
@@ -254,7 +244,7 @@ namespace DiscUtils.Fat
{
foreach (uint val in _dirtySectors.Values)
{
stream.Position = position + val * DirtyRegionSize;
stream.Position = position + (val * DirtyRegionSize);
stream.Write(_buffer, (int)(val * DirtyRegionSize), (int)DirtyRegionSize);
}
}