/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/**
* The <code>JarInputStream</code> class is used to read the contents of
* a JAR file from any input stream. It extends the class
* <code>java.util.zip.ZipInputStream</code> with support for reading
* an optional <code>Manifest</code> entry. The <code>Manifest</code>
* can be used to store meta-information about the JAR file and its entries.
*
* @author David Connelly
* @see Manifest
* @see java.util.zip.ZipInputStream
* @since 1.2
*/
public
private final boolean doVerify;
private boolean tryManifest;
/**
* Creates a new <code>JarInputStream</code> and reads the optional
* manifest. If a manifest is present, also attempts to verify
* the signatures if the JarInputStream is signed.
* @param in the actual input stream
* @exception IOException if an I/O error has occurred
*/
this(in, true);
}
/**
* Creates a new <code>JarInputStream</code> and reads the optional
* manifest. If a manifest is present and verify is true, also attempts
* to verify the signatures if the JarInputStream is signed.
*
* @param in the actual input stream
* @param verify whether or not to verify the JarInputStream if
* it is signed.
* @exception IOException if an I/O error has occurred
*/
super(in);
// This implementation assumes the META-INF/MANIFEST.MF entry
// should be either the first or the second entry (when preceded
// by the dir META-INF/). It skips the META-INF/ and then
// "consumes" the MANIFEST.MF to initialize the Manifest object.
e = (JarEntry)super.getNextEntry();
first = checkManifest(e);
}
throws IOException
{
closeEntry();
if (doVerify) {
}
return (JarEntry)super.getNextEntry();
}
return e;
}
throws IOException
{
byte[] buffer = new byte[8192];
int n;
}
return baos.toByteArray();
}
/**
* Returns the <code>Manifest</code> for this JAR file, or
* <code>null</code> if none.
*
* @return the <code>Manifest</code> for this JAR file, or
* <code>null</code> if none.
*/
return man;
}
/**
* Reads the next ZIP file entry and positions the stream at the
* beginning of the entry data. If verification has been enabled,
* any invalid signature detected while positioning the stream for
* the next entry will result in an exception.
* @exception ZipException if a ZIP file error has occurred
* @exception IOException if an I/O error has occurred
* @exception SecurityException if any of the jar file entries
* are incorrectly signed.
*/
JarEntry e;
e = (JarEntry)super.getNextEntry();
if (tryManifest) {
e = checkManifest(e);
tryManifest = false;
}
} else {
e = first;
tryManifest = true;
}
// At this point, we might have parsed all the meta-inf
// entries and have nothing to verify. If we have
// nothing to verify, get rid of the JarVerifier object.
if (jv.nothingToVerify() == true) {
} else {
}
}
return e;
}
/**
* Reads the next JAR file entry and positions the stream at the
* beginning of the entry data. If verification has been enabled,
* any invalid signature detected while positioning the stream for
* the next entry will result in an exception.
* @return the next JAR file entry, or null if there are no more entries
* @exception ZipException if a ZIP file error has occurred
* @exception IOException if an I/O error has occurred
* @exception SecurityException if any of the jar file entries
* are incorrectly signed.
*/
return (JarEntry)getNextEntry();
}
/**
* Reads from the current JAR file entry into an array of bytes.
* If <code>len</code> is not zero, the method
* blocks until some input is available; otherwise, no
* bytes are read and <code>0</code> is returned.
* If verification has been enabled, any invalid signature
* on the current entry will be reported at some point before the
* end of the entry is reached.
* @param b the buffer into which the data is read
* @param off the start offset in the destination array <code>b</code>
* @param len the maximum number of bytes to read
* @return the actual number of bytes read, or -1 if the end of the
* entry is reached
* @exception NullPointerException If <code>b</code> is <code>null</code>.
* @exception IndexOutOfBoundsException If <code>off</code> is negative,
* <code>len</code> is negative, or <code>len</code> is greater than
* <code>b.length - off</code>
* @exception ZipException if a ZIP file error has occurred
* @exception IOException if an I/O error has occurred
* @exception SecurityException if any of the jar file entries
* are incorrectly signed.
*/
int n;
} else {
n = -1;
}
}
return n;
}
/**
* Creates a new <code>JarEntry</code> (<code>ZipEntry</code>) for the
* specified JAR file entry name. The manifest attributes of
* the specified JAR file entry name will be copied to the new
* <CODE>JarEntry</CODE>.
*
* @return the <code>JarEntry</code> object just created
*/
}
return e;
}
}