Update ZipFile.cs

novn2013 · novn2013 · commit 8ec3e47283b2 · 2014-07-23T01:48:53.000+08:00
Correct the zip specification version by only checking the lower bits.
diff --git a/src/Zip/ZipFile.cs b/src/Zip/ZipFile.cs
@@ -1023,7 +1023,7 @@ long TestLocalHeader(ZipEntry entry, HeaderTest tests)
 					throw new ZipException(string.Format("Wrong local header signature @{0:X}", offsetOfFirstEntry + entry.Offset));
 				}
 
-				short extractVersion = ( short )ReadLEUshort();
+				short extractVersion = ( short )ReadLEUshort() & 0x00ff;
 				short localFlags = ( short )ReadLEUshort();
 				short compressionMethod = ( short )ReadLEUshort();
 				short fileTime = ( short )ReadLEUshort();

Original file line number	Diff line number	Diff line change
`@@ -1023,7 +1023,7 @@ long TestLocalHeader(ZipEntry entry, HeaderTest tests)`
`1023`	`1023`	`throw new ZipException(string.Format("Wrong local header signature @{0:X}", offsetOfFirstEntry + entry.Offset));`
`1024`	`1024`	`}`
`1025`	`1025`
`1026`		`- short extractVersion = ( short )ReadLEUshort();`
	`1026`	`+ short extractVersion = ( short )ReadLEUshort() & 0x00ff;`
`1027`	`1027`	`short localFlags = ( short )ReadLEUshort();`
`1028`	`1028`	`short compressionMethod = ( short )ReadLEUshort();`
`1029`	`1029`	`short fileTime = ( short )ReadLEUshort();`