Package pro.gravit.launchserver.binary

Class SignerJar

java.lang.Object

pro.gravit.launchserver.binary.SignerJar

All Implemented Interfaces:

java.lang.AutoCloseable

public class SignerJar
extends java.lang.Object
implements java.lang.AutoCloseable

Generator of signed Jars. It stores some data in memory therefore it is not suited for creation of large files. The usage:

 KeyStore keystore = KeyStore.getInstance("JKS");
 keyStore.load(keystoreStream, "keystorePassword");
 SignerJar jar = new SignerJar(out, keyStore, "keyAlias", "keyPassword");
 signedJar.addManifestAttribute("Main-Class", "com.example.MainClass");
 signedJar.addManifestAttribute("Application-Name", "Example");
 signedJar.addManifestAttribute("Permissions", "all-permissions");
 signedJar.addManifestAttribute("Codebase", "*");
 signedJar.addFileContents("com/example/MainClass.class", clsData);
 signedJar.addFileContents("JNLP-INF/APPLICATION.JNLP", generateJnlpContents());
 signedJar.close();
 

Constructor Summary

Constructors

Constructor	Description
SignerJar(java.util.zip.ZipOutputStream out, java.util.function.Supplier<org.bouncycastle.cms.CMSSignedDataGenerator> gen, java.lang.String sig_fn, java.lang.String sig_key_fn)

Method Summary

Modifier and Type	Method	Description
void	addFileContents(java.lang.String filename, byte[] contents)	Adds a file to the JAR.
void	addFileContents(java.lang.String filename, java.io.InputStream contents)	Adds a file to the JAR.
void	addFileContents(java.util.zip.ZipEntry entry, byte[] contents)	Adds a file to the JAR.
void	addFileContents(java.util.zip.ZipEntry entry, java.io.InputStream contents)	Adds a file to the JAR.
void	addManifestAttribute(java.lang.String name, java.lang.String value)	Adds a header to the manifest of the JAR.
void	close()	Closes the JAR file by writing the manifest and signature data to it and finishing the ZIP entries.
void	finish()	Finishes the JAR file by writing the manifest and signature data to it and finishing the ZIP entries.
java.util.zip.ZipOutputStream	getZos()

Methods inherited from class java.lang.Object

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

Constructor Detail

SignerJar

public SignerJar(java.util.zip.ZipOutputStream out,
                 java.util.function.Supplier<org.bouncycastle.cms.CMSSignedDataGenerator> gen,
                 java.lang.String sig_fn,
                 java.lang.String sig_key_fn)

Method Detail

addFileContents

public void addFileContents(java.lang.String filename,
                            byte[] contents)
                     throws java.io.IOException

Adds a file to the JAR. The file is immediately added to the zipped output stream. This method cannot be called once the stream is closed.

Parameters:

filename - name of the file to add (use forward slash as a path separator)

contents - contents of the file

Throws:

java.io.IOException

java.lang.NullPointerException - if any of the arguments is null

addFileContents

public void addFileContents(java.lang.String filename,
                            java.io.InputStream contents)
                     throws java.io.IOException

Adds a file to the JAR. The file is immediately added to the zipped output stream. This method cannot be called once the stream is closed.

Parameters:

filename - name of the file to add (use forward slash as a path separator)

contents - contents of the file

Throws:

java.io.IOException

java.lang.NullPointerException - if any of the arguments is null

addFileContents

public void addFileContents(java.util.zip.ZipEntry entry,
                            byte[] contents)
                     throws java.io.IOException

Adds a file to the JAR. The file is immediately added to the zipped output stream. This method cannot be called once the stream is closed.

Parameters:

entry - name of the file to add (use forward slash as a path separator)

contents - contents of the file

Throws:

java.io.IOException

java.lang.NullPointerException - if any of the arguments is null

addFileContents

public void addFileContents(java.util.zip.ZipEntry entry,
                            java.io.InputStream contents)
                     throws java.io.IOException

Adds a file to the JAR. The file is immediately added to the zipped output stream. This method cannot be called once the stream is closed.

Parameters:

entry - name of the file to add (use forward slash as a path separator)

contents - contents of the file

Throws:

java.io.IOException

java.lang.NullPointerException - if any of the arguments is null

addManifestAttribute

public void addManifestAttribute(java.lang.String name,
                                 java.lang.String value)

Adds a header to the manifest of the JAR.

Parameters:

name - name of the attribute, it is placed into the main section of the manifest file

value - value of the attribute

close

public void close()
           throws java.io.IOException

Closes the JAR file by writing the manifest and signature data to it and finishing the ZIP entries. It closes the underlying stream.

Specified by:

close in interface java.lang.AutoCloseable

Throws:

java.io.IOException

java.lang.RuntimeException - if the signing goes wrong

finish

public void finish()
            throws java.io.IOException

Finishes the JAR file by writing the manifest and signature data to it and finishing the ZIP entries. It leaves the underlying stream open.

Throws:

java.io.IOException

java.lang.RuntimeException - if the signing goes wrong

getZos

public java.util.zip.ZipOutputStream getZos()