| Constructors Summary |
|---|
public JarFile(String name)Creates a new JarFile to read from the specified
file name. The JarFile will be verified if
it is signed.
this(new File(name), true, ZipFile.OPEN_READ);
|
public JarFile(String name, boolean verify)Creates a new JarFile to read from the specified
file name.
this(new File(name), verify, ZipFile.OPEN_READ);
|
public JarFile(File file)Creates a new JarFile to read from the specified
File object. The JarFile will be verified if
it is signed.
this(file, true, ZipFile.OPEN_READ);
|
public JarFile(File file, boolean verify)Creates a new JarFile to read from the specified
File object.
this(file, verify, ZipFile.OPEN_READ);
|
public JarFile(File file, boolean verify, int mode)Creates a new JarFile to read from the specified
File object in the specified mode. The mode argument
must be either OPEN_READ or OPEN_READ | OPEN_DELETE.
super(file, mode);
this.verify = verify;
|
| Methods Summary |
|---|
| public java.util.Enumeration | entries()Returns an enumeration of the zip file entries.
final Enumeration enum_ = super.entries();
return new Enumeration<JarEntry>() {
public boolean hasMoreElements() {
return enum_.hasMoreElements();
}
public JarFileEntry nextElement() {
ZipEntry ze = (ZipEntry)enum_.nextElement();
return new JarFileEntry(ze);
}
};
|
| private byte[] | getBytes(java.util.zip.ZipEntry ze)
byte[] b = new byte[(int)ze.getSize()];
DataInputStream is = new DataInputStream(super.getInputStream(ze));
is.readFully(b, 0, b.length);
is.close();
return b;
|
| public java.util.zip.ZipEntry | getEntry(java.lang.String name)Returns the ZipEntry for the given entry name or
null if not found.
ZipEntry ze = super.getEntry(name);
if (ze != null) {
return new JarFileEntry(ze);
}
return null;
|
| public synchronized java.io.InputStream | getInputStream(java.util.zip.ZipEntry ze)Returns an input stream for reading the contents of the specified
zip file entry.
maybeInstantiateVerifier();
if (jv == null) {
return super.getInputStream(ze);
}
if (!jvInitialized) {
initializeVerifier();
jvInitialized = true;
// could be set to null after a call to
// initializeVerifier if we have nothing to
// verify
if (jv == null)
return super.getInputStream(ze);
}
// wrap a verifier stream around the real stream
return new JarVerifier.VerifierStream(
getManifest(),
ze instanceof JarFileEntry ?
(JarEntry) ze : getJarEntry(ze.getName()),
super.getInputStream(ze),
jv);
|
| public java.util.jar.JarEntry | getJarEntry(java.lang.String name)Returns the JarEntry for the given entry name or
null if not found.
return (JarEntry)getEntry(name);
|
| private java.util.jar.JarEntry | getManEntry()
lastOcc = new int[128];
optoSft = new int[10];
lastOcc[(int)'c"]=1;
lastOcc[(int)'l"]=2;
lastOcc[(int)'s"]=5;
lastOcc[(int)'-"]=6;
lastOcc[(int)'p"]=7;
lastOcc[(int)'a"]=8;
lastOcc[(int)'t"]=9;
lastOcc[(int)'h"]=10;
for (int i=0; i<9; i++)
optoSft[i]=10;
optoSft[9]=1;
if (manEntry == null) {
// First look up manifest entry using standard name
manEntry = getJarEntry(MANIFEST_NAME);
if (manEntry == null) {
// If not found, then iterate through all the "META-INF/"
// entries to find a match.
String[] names = getMetaInfEntryNames();
if (names != null) {
for (int i = 0; i < names.length; i++) {
if (MANIFEST_NAME.equals(
names[i].toUpperCase(Locale.ENGLISH))) {
manEntry = getJarEntry(names[i]);
break;
}
}
}
}
}
return manEntry;
|
| public java.util.jar.Manifest | getManifest()Returns the jar file manifest, or null if none.
Manifest man = manRef != null ? manRef.get() : null;
if (man == null) {
JarEntry manEntry = getManEntry();
// If found then load the manifest
if (manEntry != null) {
if (verify) {
byte[] b = getBytes(manEntry);
man = new Manifest(new ByteArrayInputStream(b));
if (!jvInitialized) {
jv = new JarVerifier(b);
}
} else {
man = new Manifest(super.getInputStream(manEntry));
}
manRef = new SoftReference(man);
}
}
return man;
|
| private native java.lang.String[] | getMetaInfEntryNames()
|
| boolean | hasClassPathAttribute()
if (computedHasClassPathAttribute) {
return hasClassPathAttribute;
}
hasClassPathAttribute = false;
if (!isKnownToNotHaveClassPathAttribute()) {
JarEntry manEntry = getManEntry();
if (manEntry != null) {
byte[] b = new byte[(int)manEntry.getSize()];
DataInputStream dis = new DataInputStream(
super.getInputStream(manEntry));
dis.readFully(b, 0, b.length);
dis.close();
int last = b.length - src.length;
int i = 0;
next:
while (i<=last) {
for (int j=9; j>=0; j--) {
char c = (char) b[i+j];
c = (((c-'A")|('Z"-c)) >= 0) ? (char)(c + 32) : c;
if (c != src[j]) {
i += Math.max(j + 1 - lastOcc[c&0x7F], optoSft[j]);
continue next;
}
}
hasClassPathAttribute = true;
break;
}
}
}
computedHasClassPathAttribute = true;
return hasClassPathAttribute;
|
| private void | initializeVerifier()
ManifestEntryVerifier mev = null;
// Verify "META-INF/" entries...
try {
String[] names = getMetaInfEntryNames();
if (names != null) {
for (int i = 0; i < names.length; i++) {
JarEntry e = getJarEntry(names[i]);
if (!e.isDirectory()) {
if (mev == null) {
mev = new ManifestEntryVerifier(getManifest());
}
byte[] b = getBytes(e);
if (b != null && b.length > 0) {
jv.beginEntry(e, mev);
jv.update(b.length, b, 0, b.length, mev);
jv.update(-1, null, 0, 0, mev);
}
}
}
}
} catch (IOException ex) {
// if we had an error parsing any blocks, just
// treat the jar file as being unsigned
jv = null;
verify = false;
}
// if after initializing the verifier we have nothing
// signed, we null it out.
if (jv != null) {
jv.doneWithMeta();
if (JarVerifier.debug != null) {
JarVerifier.debug.println("done with meta!");
}
if (jv.nothingToVerify()) {
if (JarVerifier.debug != null) {
JarVerifier.debug.println("nothing to verify!");
}
jv = null;
verify = false;
}
}
|
| private boolean | isKnownToNotHaveClassPathAttribute()
// Optimize away even scanning of manifest for jar files we
// deliver which don't have a class-path attribute. If one of
// these jars is changed to include such an attribute this code
// must be changed.
if (javaHome == null) {
javaHome = (String) AccessController.doPrivileged(
new GetPropertyAction("java.home"));
}
String name = getName();
String localJavaHome = javaHome;
if (name.startsWith(localJavaHome)) {
if (name.endsWith("rt.jar") ||
name.endsWith("sunrsasign.jar") ||
name.endsWith("jsse.jar") ||
name.endsWith("jce.jar") ||
name.endsWith("charsets.jar") ||
name.endsWith("dnsns.jar") ||
name.endsWith("ldapsec.jar") ||
name.endsWith("localedata.jar") ||
name.endsWith("sunjce_provider.jar")) {
return true;
}
}
return false;
|
| private void | maybeInstantiateVerifier()
if (jv != null) {
return;
}
if (verify) {
String[] names = getMetaInfEntryNames();
if (names != null) {
for (int i = 0; i < names.length; i++) {
String name = names[i].toUpperCase(Locale.ENGLISH);
if (name.endsWith(".DSA") ||
name.endsWith(".RSA") ||
name.endsWith(".SF")) {
// Assume since we found a signature-related file
// that the jar is signed and that we therefore
// need a JarVerifier and Manifest
getManifest();
return;
}
}
}
// No signature-related files; don't instantiate a
// verifier
verify = false;
}
|
