/** update a single byte. */
public void update(int b, ManifestEntryVerifier mev) throws IOException {
if (b != -1) {
if (parsingBlockOrSF) {
baos.write(b);
} else {
mev.update((byte) b);
}
} else {
processEntry(mev);
}
}
/** update an array of bytes. */
public void update(int n, byte[] b, int off, int len, ManifestEntryVerifier mev)
throws IOException {
if (n != -1) {
if (parsingBlockOrSF) {
baos.write(b, off, n);
} else {
mev.update(b, off, n);
}
} else {
processEntry(mev);
}
}
/** called when we reach the end of entry in one of the read() methods. */
private void processEntry(ManifestEntryVerifier mev) throws IOException {
if (!parsingBlockOrSF) {
JarEntry je = mev.getEntry();
if ((je != null) && (je.signers == null)) {
je.signers = mev.verify(verifiedSigners, sigFileSigners);
je.certs = mapSignersToCertArray(je.signers);
}
} else {
try {
parsingBlockOrSF = false;
if (debug != null) {
debug.println("processEntry: processing block");
}
String uname = mev.getEntry().getName().toUpperCase(Locale.ENGLISH);
if (uname.endsWith(".SF")) {
String key = uname.substring(0, uname.length() - 3);
byte bytes[] = baos.toByteArray();
// add to sigFileData in case future blocks need it
sigFileData.put(key, bytes);
// check pending blocks, we can now process
// anyone waiting for this .SF file
Iterator it = pendingBlocks.iterator();
while (it.hasNext()) {
SignatureFileVerifier sfv = (SignatureFileVerifier) it.next();
if (sfv.needSignatureFile(key)) {
if (debug != null) {
debug.println("processEntry: processing pending block");
}
sfv.setSignatureFile(bytes);
sfv.process(sigFileSigners, manifestDigests);
}
}
return;
}
// now we are parsing a signature block file
String key = uname.substring(0, uname.lastIndexOf("."));
if (signerCache == null) signerCache = new ArrayList();
if (manDig == null) {
synchronized (manifestRawBytes) {
if (manDig == null) {
manDig = new ManifestDigester(manifestRawBytes);
manifestRawBytes = null;
}
}
}
SignatureFileVerifier sfv =
new SignatureFileVerifier(signerCache, manDig, uname, baos.toByteArray());
if (sfv.needSignatureFileBytes()) {
// see if we have already parsed an external .SF file
byte[] bytes = (byte[]) sigFileData.get(key);
if (bytes == null) {
// put this block on queue for later processing
// since we don't have the .SF bytes yet
// (uname, block);
if (debug != null) {
debug.println("adding pending block");
}
pendingBlocks.add(sfv);
return;
} else {
sfv.setSignatureFile(bytes);
}
}
sfv.process(sigFileSigners, manifestDigests);
} catch (IOException ioe) {
// e.g. sun.security.pkcs.ParsingException
if (debug != null) debug.println("processEntry caught: " + ioe);
// ignore and treat as unsigned
} catch (SignatureException se) {
if (debug != null) debug.println("processEntry caught: " + se);
// ignore and treat as unsigned
} catch (NoSuchAlgorithmException nsae) {
if (debug != null) debug.println("processEntry caught: " + nsae);
// ignore and treat as unsigned
} catch (CertificateException ce) {
if (debug != null) debug.println("processEntry caught: " + ce);
// ignore and treat as unsigned
}
}
}
/**
* This method scans to see which entry we're parsing and keeps various state information
* depending on what type of file is being parsed.
*/
public void beginEntry(JarEntry je, ManifestEntryVerifier mev) throws IOException {
if (je == null) return;
if (debug != null) {
debug.println("beginEntry " + je.getName());
}
String name = je.getName();
/*
* Assumptions:
* 1. The manifest should be the first entry in the META-INF directory.
* 2. The .SF/.DSA/.EC files follow the manifest, before any normal entries
* 3. Any of the following will throw a SecurityException:
* a. digest mismatch between a manifest section and
* the SF section.
* b. digest mismatch between the actual jar entry and the manifest
*/
if (parsingMeta) {
String uname = name.toUpperCase(Locale.ENGLISH);
if ((uname.startsWith("META-INF/") || uname.startsWith("/META-INF/"))) {
if (je.isDirectory()) {
mev.setEntry(null, je);
return;
}
if (uname.equals(JarFile.MANIFEST_NAME) || uname.equals(JarIndex.INDEX_NAME)) {
return;
}
if (SignatureFileVerifier.isBlockOrSF(uname)) {
/* We parse only DSA, RSA or EC PKCS7 blocks. */
parsingBlockOrSF = true;
baos.reset();
mev.setEntry(null, je);
return;
}
// If a META-INF entry is not MF or block or SF, they should
// be normal entries. According to 2 above, no more block or
// SF will appear. Let's doneWithMeta.
}
}
if (parsingMeta) {
doneWithMeta();
}
if (je.isDirectory()) {
mev.setEntry(null, je);
return;
}
// be liberal in what you accept. If the name starts with ./, remove
// it as we internally canonicalize it with out the ./.
if (name.startsWith("./")) name = name.substring(2);
// be liberal in what you accept. If the name starts with /, remove
// it as we internally canonicalize it with out the /.
if (name.startsWith("/")) name = name.substring(1);
// only set the jev object for entries that have a signature
// (either verified or not)
if (sigFileSigners.get(name) != null || verifiedSigners.get(name) != null) {
mev.setEntry(name, je);
return;
}
// don't compute the digest for this entry
mev.setEntry(null, je);
return;
}