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Fixed handling of Unix/macOS generated ZIP archives

CQTexperiment
Christopher Snowhill 2019-10-24 17:34:02 -07:00
parent dbaf952429
commit 38d1dee848
1 changed files with 3 additions and 1 deletions
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4
Frameworks/File_Extractor/File_Extractor/fex/Zip_Extractor.cpp
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@ -320,7 +320,9 @@ blargg_err_t Zip_Extractor::first_read( long count )
// Determine compression
{
int method = get_le16( e.method );
if ( (method && method != Z_DEFLATED) || get_le16( e.vers ) > 20 )
// high byte of version field indicates OS used to generate
// ie. 0x300 means Unix
if ( (method && method != Z_DEFLATED) || (get_le16( e.vers ) & 0xFF) > 20 )
return BLARGG_ERR( BLARGG_ERR_FILE_FEATURE, "compression method" );
file_deflated = (method != 0);
}