Package org.pgpainless.util

Class CRCingArmoredInputStreamWrapper

java.lang.Object
java.io.InputStream
org.bouncycastle.bcpg.ArmoredInputStream
org.pgpainless.util.CRCingArmoredInputStreamWrapper
All Implemented Interfaces:
Closeable, AutoCloseable
public class CRCingArmoredInputStreamWrapper extends org.bouncycastle.bcpg.ArmoredInputStream
Utility class that causes read(bytes, offset, length) to properly throw exceptions caused by faulty CRC checksums. Furthermore, this class swallows exceptions from BC's ArmoredInputStream that are caused by missing CRC checksums.

  • Constructor Details

    • CRCingArmoredInputStreamWrapper

      public CRCingArmoredInputStreamWrapper(org.bouncycastle.bcpg.ArmoredInputStream inputStream) throws IOException
      Throws:
      IOException

  • Method Details

    • isClearText

      public boolean isClearText()
      Overrides:
      isClearText in class org.bouncycastle.bcpg.ArmoredInputStream

    • isEndOfStream

      public boolean isEndOfStream()
      Overrides:
      isEndOfStream in class org.bouncycastle.bcpg.ArmoredInputStream

    • getArmorHeaderLine

      public String getArmorHeaderLine()
      Overrides:
      getArmorHeaderLine in class org.bouncycastle.bcpg.ArmoredInputStream

    • getArmorHeaders

      public String[] getArmorHeaders()
      Overrides:
      getArmorHeaders in class org.bouncycastle.bcpg.ArmoredInputStream

    • read

      public int read() throws IOException
      Overrides:
      read in class org.bouncycastle.bcpg.ArmoredInputStream
      Throws:
      IOException

    • read

      public int read(@Nonnull byte[] b) throws IOException
      Overrides:
      read in class InputStream
      Throws:
      IOException

    • read

      public int read(byte[] b, int off, int len) throws IOException
      Reads up to len bytes of data from the input stream into an array of bytes. An attempt is made to read as many as len bytes, but a smaller number may be read. The number of bytes actually read is returned as an integer. The first byte read is stored into element b[off], the next one into b[off+1], and so on. The number of bytes read is, at most, equal to len. NOTE: We need to override the custom behavior of Java's InputStream.read(byte[], int, int), as the upstream method silently swallows IOExceptions. This would cause CRC checksum errors to go unnoticed.
      Overrides:
      read in class org.bouncycastle.bcpg.ArmoredInputStream
      Parameters:
      b - byte array
      off - offset at which we start writing data to the array
      len - number of bytes we write into the array
      Returns:
      total number of bytes read into the buffer
      Throws:
      IOException - if an exception happens AT ANY POINT
      See Also:

    • skip

      public long skip(long n) throws IOException
      Overrides:
      skip in class InputStream
      Throws:
      IOException

    • available

      public int available() throws IOException
      Overrides:
      available in class org.bouncycastle.bcpg.ArmoredInputStream
      Throws:
      IOException

    • close

      public void close() throws IOException
      Specified by:
      close in interface AutoCloseable
      Specified by:
      close in interface Closeable
      Overrides:
      close in class org.bouncycastle.bcpg.ArmoredInputStream
      Throws:
      IOException

    • mark

      public void mark(int readlimit)
      Overrides:
      mark in class InputStream

    • reset

      public void reset() throws IOException
      Overrides:
      reset in class InputStream
      Throws:
      IOException

    • markSupported

      public boolean markSupported()
      Overrides:
      markSupported in class InputStream