예제 #1
0
 internal void ProcessExtraData(bool localHeader)
 {
     ZipExtraData extraData = new ZipExtraData(this.extra);
     if (extraData.Find(1))
     {
         this.forceZip64_ = true;
         if (extraData.ValueLength < 4)
         {
             throw new ZipException("Extra data extended Zip64 information length is invalid");
         }
         if (localHeader || (this.size == 0xffffffffL))
         {
             this.size = (ulong) extraData.ReadLong();
         }
         if (localHeader || (this.compressedSize == 0xffffffffL))
         {
             this.compressedSize = (ulong) extraData.ReadLong();
         }
         if (!(localHeader || (this.offset != 0xffffffffL)))
         {
             this.offset = extraData.ReadLong();
         }
     }
     else if (((this.versionToExtract & 0xff) >= 0x2d) && ((this.size == 0xffffffffL) || (this.compressedSize == 0xffffffffL)))
     {
         throw new ZipException("Zip64 Extended information required but is missing.");
     }
     if (extraData.Find(10))
     {
         if (extraData.ValueLength < 4)
         {
             throw new ZipException("NTFS Extra data invalid");
         }
         extraData.ReadInt();
         while (extraData.UnreadCount >= 4)
         {
             int num = extraData.ReadShort();
             int amount = extraData.ReadShort();
             if (num == 1)
             {
                 if (amount >= 0x18)
                 {
                     long fileTime = extraData.ReadLong();
                     long num4 = extraData.ReadLong();
                     long num5 = extraData.ReadLong();
                     this.DateTime = System.DateTime.FromFileTime(fileTime);
                 }
                 break;
             }
             extraData.Skip(amount);
         }
     }
     else if (extraData.Find(0x5455))
     {
         int valueLength = extraData.ValueLength;
         if (((extraData.ReadByte() & 1) != 0) && (valueLength >= 5))
         {
             int seconds = extraData.ReadInt();
             System.DateTime time = new System.DateTime(0x7b2, 1, 1, 0, 0, 0);
             this.DateTime = (time.ToUniversalTime() + new TimeSpan(0, 0, 0, seconds, 0)).ToLocalTime();
         }
     }
     if (this.method == Maticsoft.ZipLib.Zip.CompressionMethod.WinZipAES)
     {
         this.ProcessAESExtraData(extraData);
     }
 }
예제 #2
0
 private void ProcessAESExtraData(ZipExtraData extraData)
 {
     if (!extraData.Find(0x9901))
     {
         throw new ZipException("AES Extra Data missing");
     }
     this.versionToExtract = 0x33;
     this.Flags |= 0x40;
     int valueLength = extraData.ValueLength;
     if (valueLength < 7)
     {
         throw new ZipException("AES Extra Data Length " + valueLength + " invalid.");
     }
     int num2 = extraData.ReadShort();
     int num3 = extraData.ReadShort();
     int num4 = extraData.ReadByte();
     int num5 = extraData.ReadShort();
     this._aesVer = num2;
     this._aesEncryptionStrength = num4;
     this.method = (Maticsoft.ZipLib.Zip.CompressionMethod) num5;
 }