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another fix for 9551394

This commit is contained in:
CasualPokePlayer 2023-05-10 05:23:24 -07:00
parent c52a950c41
commit 45a0c8cffb
1 changed files with 8 additions and 5 deletions
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13
src/BizHawk.Client.EmuHawk/RetroAchievements/RetroAchievements.GameVerification.cs
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@ -164,7 +164,7 @@ namespace BizHawk.Client.EmuHawk
// we want to hash the second session of the disc
if (disc.Sessions.Count > 2)
{
static string HashJaguar(DiscTrack bootTrack, DiscSectorReader dsr)
static string HashJaguar(DiscTrack bootTrack, DiscSectorReader dsr, bool commonHomebrewHash)
{
const string _jaguarHeader = "ATARI APPROVED DATA HEADER ATRI";
const string _jaguarBSHeader = "TARA IPARPVODED TA AEHDAREA RT";
@ -177,6 +177,7 @@ namespace BizHawk.Client.EmuHawk
var numLbas = bootTrack.NextTrack.LBA - bootTrack.LBA;
int bootLen = 0, bootLba = 0, bootOff = 0;
bool byteswapped = false, foundHeader = false;
var bootLenOffset = (commonHomebrewHash ? 0x40 : 0) + 32 + 4;
for (var i = 0; i < numLbas; i++)
{
dsr.ReadLBA_2352(startLba + i, buf2352, 0);
@ -187,7 +188,8 @@ namespace BizHawk.Client.EmuHawk
{
if (_jaguarHeader == Encoding.ASCII.GetString(buf2352, j, 32 - 1))
{
bootLen = (buf2352[j + 36] << 24) | (buf2352[j + 37] << 16) | (buf2352[j + 38] << 8) | buf2352[j + 39];
bootLen = (buf2352[j + bootLenOffset + 0] << 24) | (buf2352[j + bootLenOffset + 1] << 16) |
(buf2352[j + bootLenOffset + 2] << 8) | buf2352[j + bootLenOffset + 3];
bootLba = startLba + i;
bootOff = j + 32 + 4 + 4;
byteswapped = false;
@ -199,7 +201,8 @@ namespace BizHawk.Client.EmuHawk
{
if (_jaguarBSHeader == Encoding.ASCII.GetString(buf2352, j, 32 - 2))
{
bootLen = (buf2352[j + 37] << 24) | (buf2352[j + 36] << 16) | (buf2352[j + 39] << 8) | buf2352[j + 38];
bootLen = (buf2352[j + bootLenOffset + 1] << 24) | (buf2352[j + bootLenOffset + 0] << 16) |
(buf2352[j + bootLenOffset + 3] << 8) | buf2352[j + bootLenOffset + 2];
bootLba = startLba + i;
bootOff = j + 32 + 4 + 4;
byteswapped = true;
@ -246,14 +249,14 @@ namespace BizHawk.Client.EmuHawk
return MD5Checksum.ComputeDigestHex(buffer.ToArray());
}
var jaguarHash = HashJaguar(disc.Sessions[2].Tracks[1], dsr);
var jaguarHash = HashJaguar(disc.Sessions[2].Tracks[1], dsr, false);
switch (jaguarHash)
{
case null:
return 0;
case "254487B59AB21BC005338E85CBF9FD2F": // see https://github.com/RetroAchievements/rcheevos/pull/234
{
jaguarHash = HashJaguar(disc.Sessions[1].Tracks[2], dsr);
jaguarHash = HashJaguar(disc.Sessions[1].Tracks[2], dsr, true);
if (jaguarHash is null)
{
return 0;