Zip64 fixes for ZipOutputStream. UseZip64 property now public in ZipOutputStream.cs Tests updated.

Author: jfreilly

samples/cs/CreateZipFile/AssemblyInfo.cs

@@ -10,7 +10,7 @@
 [assembly: AssemblyTrademark("")]
 [assembly: AssemblyCulture("")]
 
-[assembly: AssemblyVersion("0.85.2.324")]
+[assembly: AssemblyVersion("0.85.2.329")]
 
 [assembly: AssemblyDelaySign(false)]
 [assembly: AssemblyKeyFile("")]

samples/cs/FastZip/AssemblyInfo.cs

@@ -23,7 +23,7 @@
 // You can specify all values by your own or you can build default build and revision
 // numbers with the '*' character (the default):
 
-[assembly: AssemblyVersion("0.85.2.324")]
+[assembly: AssemblyVersion("0.85.2.329")]
 
 // The following attributes specify the key for the sign of your assembly. See the
 // .NET Framework documentation for more information about signing.

samples/cs/minibzip2/AssemblyInfo.cs

@@ -10,7 +10,7 @@
 [assembly: AssemblyTrademark("")]
 [assembly: AssemblyCulture("")]
 
-[assembly: AssemblyVersion("0.85.2.324")]
+[assembly: AssemblyVersion("0.85.2.329")]
 
 [assembly: AssemblyDelaySign(false)]
 [assembly: AssemblyKeyFile("")]

samples/cs/minigzip/AssemblyInfo.cs

@@ -10,7 +10,7 @@
 [assembly: AssemblyTrademark("")]
 [assembly: AssemblyCulture("")]
 
-[assembly: AssemblyVersion("0.85.2.324")]
+[assembly: AssemblyVersion("0.85.2.329")]
 
 [assembly: AssemblyDelaySign(false)]
 [assembly: AssemblyKeyFile("")]

samples/cs/sz/AssemblyInfo.cs

@@ -23,7 +23,7 @@
 // You can specify all values by your own or you can build default build and revision
 // numbers with the '*' character (the default):
 
-[assembly: AssemblyVersion("0.85.2.324")]
+[assembly: AssemblyVersion("0.85.2.329")]
 
 // The following attributes specify the key for the sign of your assembly. See the
 // .NET Framework documentation for more information about signing.

samples/cs/tar/AssemblyInfo.cs

@@ -23,7 +23,7 @@
 // You can specify all values by your own or you can build default build and revision
 // numbers with the '*' character (the default):
 
-[assembly: AssemblyVersion("0.85.2.324")]
+[assembly: AssemblyVersion("0.85.2.329")]
 
 // The following attributes specify the key for the sign of your assembly. See the
 // .NET Framework documentation for more information about signing.

samples/cs/zf/AssemblyInfo.cs

@@ -26,7 +26,7 @@
 // You can specify all the values or you can default the Revision and Build Numbers 
 // by using the '*' as shown below:
 
-[assembly: AssemblyVersion("0.85.2.324")]
+[assembly: AssemblyVersion("0.85.2.329")]
 
 //
 // In order to sign your assembly you must specify a key to use. Refer to the 

src/AssemblyInfo.cs

@@ -73,7 +73,7 @@
 [assembly: AssemblyCopyright("Copyright 2001-2007 Mike Krueger, John Reilly")]
 [assembly: AssemblyTrademark("Copyright 2001-2007 Mike Krueger, John Reilly")]
 
-[assembly: AssemblyVersion("0.85.2.324")]
+[assembly: AssemblyVersion("0.85.2.329")]
 [assembly: AssemblyInformationalVersionAttribute("0.85.2")]
 
 

src/Zip/ZipFile.cs

@@ -1105,6 +1105,7 @@ long TestLocalHeader(ZipEntry entry, HeaderTest tests)
 					}
 
 					// Crc valid for empty entry.
+					// This will also apply to streamed entries where size isnt known and the header cant be patched
 					if ( (size == 0) && (compressedSize == 0) ) {
 						if ( crcValue != 0 ) {
 							throw new ZipException("Invalid CRC for empty entry");

src/Zip/ZipOutputStream.cs

@@ -115,9 +115,10 @@ public class ZipOutputStream : DeflaterOutputStream
 		long crcPatchPos = -1;
 		long sizePatchPos = -1;
 
-		// Default of off is backwards compatible and doesnt dump on
-		// XP's built in compression which cnat handle it
-		UseZip64 useZip64_ = UseZip64.Off;
+		// Default is dynamic which is not backwards compatible and can cause problems
+		// with XP's built in compression which cant read Zip64 archives.
+		// However it does avoid the situation were a large file is added and cannot be completed correctly.
+		UseZip64 useZip64_ = UseZip64.Dynamic;
 		#endregion
 
 		#region Constructors
@@ -188,7 +189,7 @@ public int GetLevel()
 		/// <summary>
 		/// Get / set a value indicating how Zip64 Extension usage is determined when adding entries.
 		/// </summary>
-		UseZip64 UseZip64
+		public UseZip64 UseZip64
 		{
 			get { return useZip64_; }
 			set { useZip64_ = value; }
@@ -340,6 +341,7 @@ public void PutNextEntry(ZipEntry entry)
 			entry.CompressionMethod = (CompressionMethod)method;
 
 			curMethod = method;
+			sizePatchPos = -1;
 
 			if ( (useZip64_ == UseZip64.On) || ((entry.Size < 0) && (useZip64_ == UseZip64.Dynamic)) ) {
 				entry.ForceZip64();
@@ -375,7 +377,7 @@ public void PutNextEntry(ZipEntry entry)
 				}
 
 				// For local header both sizes appear in Zip64 Extended Information
-				if ( entry.LocalHeaderRequiresZip64 ) {
+				if ( entry.LocalHeaderRequiresZip64 && patchEntryHeader ) {
 					WriteLeInt(-1);
 					WriteLeInt(-1);
 				}
@@ -393,7 +395,7 @@ public void PutNextEntry(ZipEntry entry)
 
 			ZipExtraData ed = new ZipExtraData(entry.ExtraData);
 
-			if ( entry.LocalHeaderRequiresZip64 ) {
+			if (entry.LocalHeaderRequiresZip64 && (headerInfoAvailable || patchEntryHeader)) {
 				ed.StartNewEntry();
 				if (headerInfoAvailable) {
 					ed.AddLeLong(entry.Size);
@@ -474,7 +476,7 @@ public void CloseEntry()
 				base.Finish();
 			}
 
-			long csize = curMethod == CompressionMethod.Deflated ? def.TotalOut : size;
+			long csize = (curMethod == CompressionMethod.Deflated) ? def.TotalOut : size;
 
 			if (curEntry.Size < 0) {
 				curEntry.Size = size;
@@ -509,6 +511,11 @@ public void CloseEntry()
 				WriteLeInt((int)curEntry.Crc);
 
 				if ( curEntry.LocalHeaderRequiresZip64 ) {
+					
+					if ( sizePatchPos == -1 ) {
+						throw new ZipException("Entry requires zip64 but this has been turned off");
+					}
+					
 					baseOutputStream.Seek(sizePatchPos, SeekOrigin.Begin);
 					WriteLeLong(curEntry.Size);
 					WriteLeLong(curEntry.CompressedSize);