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Add detection of PS1 CDs.

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This commit is contained in:
Natalia Portillo
2020-07-19 15:59:36 +01:00
parent 88e835e2f8
commit 1b70ae813d
1 changed files with 110 additions and 1 deletions
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111
Aaru.Core/Media/Detection/MMC.cs
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@@ -1254,7 +1254,7 @@ namespace Aaru.Core.Media.Detection
AaruConsole.DebugWriteLine("Media detection",
"Found Sony PlayStation 2 boot sectors, setting disc type to PS2 CD.");
return;
goto hasPs2CdBoot;
}
}
@@ -1447,6 +1447,9 @@ namespace Aaru.Core.Media.Detection
}
}
// If it has a PS2 boot area it can still be PS1, so check for SYSTEM.CNF below
hasPs2CdBoot:
// Check if ISO9660
sense = dev.Read12(out byte[] isoSector, out _, 0, false, true, false, false, 16, 2048, 0, 1, false,
dev.Timeout, out _);
@@ -1539,6 +1542,8 @@ namespace Aaru.Core.Media.Detection
uint vcdLength = 0;
uint pcdStart = 0;
uint pcdLength = 0;
uint ps1Start = 0;
uint ps1Length = 0;
for(int ri = 0; ri < rootLength; ri++)
{
@@ -1578,6 +1583,12 @@ namespace Aaru.Core.Media.Detection
pcdLength = BitConverter.ToUInt32(isoSector, rootPos + 10) / 2048;
}
if(name == "SYSTEM.CNF")
{
ps1Start = BitConverter.ToUInt32(isoSector, rootPos + 2);
ps1Length = BitConverter.ToUInt32(isoSector, rootPos + 10);
}
rootPos += isoSector[rootPos];
}
}
@@ -1925,6 +1936,104 @@ namespace Aaru.Core.Media.Detection
}
}
// "SYSTEM.CNF" length
if(ps1Length > 0)
{
uint ps1Sectors = ps1Length / 2048;
if(ps1Length % 2048 > 0)
ps1Sectors++;
string ps1Txt = null;
// Read "SYSTEM.CNF"
try
{
using var ps1Ms = new MemoryStream();
for(uint i = 0; i < ps1Sectors; i++)
{
sense = dev.Read12(out isoSector, out _, 0, false, true, false, false, ps1Start + i,
2048, 0, 1, false, dev.Timeout, out _);
if(sense)
break;
ps1Ms.Write(isoSector, 0, 2048);
}
isoSector = ps1Ms.ToArray();
ps1Txt = Encoding.ASCII.GetString(isoSector);
}
catch
{
ps1Txt = null;
}
// Check "SYSTEM.CNF" lines
if(ps1Txt != null)
{
using var sr = new StringReader(ps1Txt);
string ps1BootFile = null;
string ps2BootFile = null;
while(sr.Peek() > 0)
{
string line = sr.ReadLine();
// End of file
if(line is null ||
line.Length == 0)
break;
if(line.StartsWith("BOOT = cdrom:", StringComparison.InvariantCultureIgnoreCase))
{
ps1BootFile = line.Substring(13);
if(ps1BootFile.StartsWith('\\'))
ps1BootFile = ps1BootFile.Substring(1);
if(ps1BootFile.EndsWith(";1", StringComparison.InvariantCultureIgnoreCase))
ps1BootFile = ps1BootFile.Substring(0, ps1BootFile.Length - 2);
break;
}
if(line.StartsWith("BOOT2 = cdrom0:", StringComparison.InvariantCultureIgnoreCase))
{
ps2BootFile = line.Substring(13);
if(ps2BootFile.StartsWith('\\'))
ps2BootFile = ps2BootFile.Substring(1);
if(ps2BootFile.EndsWith(";1", StringComparison.InvariantCultureIgnoreCase))
ps2BootFile = ps2BootFile.Substring(0, ps2BootFile.Length - 2);
break;
}
}
if(ps1BootFile != null &&
rootEntries.Contains(ps1BootFile.ToUpperInvariant()))
{
mediaType = MediaType.PS1CD;
AaruConsole.DebugWriteLine("Media detection",
"Found correct SYSTEM.CNF file in root pointing to existing file in root, setting disc type to PlayStation CD.");
}
if(ps2BootFile != null &&
rootEntries.Contains(ps2BootFile.ToUpperInvariant()))
{
mediaType = MediaType.PS2CD;
AaruConsole.DebugWriteLine("Media detection",
"Found correct SYSTEM.CNF file in root pointing to existing file in root, setting disc type to PlayStation 2 CD.");
}
}
}
break;
}