Package org.apache.maven.shared.jarsigner

Class JarSignerUtil

  • public class JarSignerUtil
extends java.lang.Object
    Useful methods.
    Since:
    1.0

    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      private JarSignerUtil()  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      protected static java.util.jar.Manifest buildUnsignedManifest​(java.util.jar.Manifest manifest)
      Build a new manifest from the given one, removing any signing information inside it.
      private static boolean endsWithIgnoreCase​(java.lang.String str, java.lang.String searchStr)  
      static boolean isArchiveSigned​(java.io.File jarFile)
      Scans an archive for existing signatures.
      protected static boolean isManifestFile​(java.lang.String entryName)  
      protected static boolean isSignatureFile​(java.lang.String entryName)
      Checks whether the specified JAR file entry denotes a signature-related file, i.e.
      static boolean isZipFile​(java.io.File file)
      Checks whether the specified file is a JAR file.
      static void unsignArchive​(java.io.File jarFile)
      Removes any existing signatures from the specified JAR file.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • JarSignerUtil

        private JarSignerUtil()

    • Method Detail

      • isZipFile

        public static boolean isZipFile​(java.io.File file)
        Checks whether the specified file is a JAR file. For our purposes, a ZIP file is a ZIP stream with at least one entry.
        Parameters:
        file - The file to check, must not be null.
        Returns:
        true if the file looks like a ZIP file, false otherwise.

      • unsignArchive

        public static void unsignArchive​(java.io.File jarFile)
                          throws java.io.IOException
        Removes any existing signatures from the specified JAR file. We will stream from the input JAR directly to the output JAR to retain as much metadata from the original JAR as possible.
        Parameters:
        jarFile - The JAR file to unsign, must not be null.
        Throws:
        java.io.IOException - when error occurs during processing the file

      • buildUnsignedManifest

        protected static java.util.jar.Manifest buildUnsignedManifest​(java.util.jar.Manifest manifest)
        Build a new manifest from the given one, removing any signing information inside it. This is done by removing any attributes containing some digest information. If an entry has then no more attributes, then it will not be written in the result manifest.
        Parameters:
        manifest - manifest to clean
        Returns:
        the build manifest with no digest attributes
        Since:
        1.3

      • isArchiveSigned

        public static boolean isArchiveSigned​(java.io.File jarFile)
                               throws java.io.IOException
        Scans an archive for existing signatures.
        Parameters:
        jarFile - The archive to scan, must not be null.
        Returns:
        true, if the archive contains at least one signature file; false, if the archive does not contain any signature files.
        Throws:
        java.io.IOException - if scanning jarFile fails.

      • isSignatureFile

        protected static boolean isSignatureFile​(java.lang.String entryName)
        Checks whether the specified JAR file entry denotes a signature-related file, i.e. matches META-INF/*.SF, META-INF/*.DSA, META-INF/*.RSA or META-INF/*.EC.
        Parameters:
        entryName - The name of the JAR file entry to check, must not be null.
        Returns:
        true if the entry is related to a signature, false otherwise.

      • isManifestFile

        protected static boolean isManifestFile​(java.lang.String entryName)

      • endsWithIgnoreCase

        private static boolean endsWithIgnoreCase​(java.lang.String str,
                                          java.lang.String searchStr)