public String verify(JarFile jar, String... algorithms) throws IOException {
if (algorithms == null || algorithms.length == 0) algorithms = new String[] {"MD5", "SHA"};
else if (algorithms.length == 1 && algorithms[0].equals("-")) return null;
try {
Manifest m = jar.getManifest();
if (m.getEntries().isEmpty()) return "No name sections";
for (Enumeration<JarEntry> e = jar.entries(); e.hasMoreElements(); ) {
JarEntry je = e.nextElement();
if (MANIFEST_ENTRY.matcher(je.getName()).matches()) continue;
Attributes nameSection = m.getAttributes(je.getName());
if (nameSection == null) return "No name section for " + je.getName();
for (String algorithm : algorithms) {
try {
MessageDigest md = MessageDigest.getInstance(algorithm);
String expected = nameSection.getValue(algorithm + "-Digest");
if (expected != null) {
byte digest[] = Base64.decodeBase64(expected);
copy(jar.getInputStream(je), md);
if (!Arrays.equals(digest, md.digest()))
return "Invalid digest for "
+ je.getName()
+ ", "
+ expected
+ " != "
+ Base64.encodeBase64(md.digest());
} else reporter.error("could not find digest for " + algorithm + "-Digest");
} catch (NoSuchAlgorithmException nsae) {
return "Missing digest algorithm " + algorithm;
}
}
}
} catch (Exception e) {
return "Failed to verify due to exception: " + e.getMessage();
}
return null;
}
private static Dictionary<String, Object> getDictionary(
Map<String, Type> types, Map<String, Object> values) throws Exception {
Hashtable<String, Object> ht = new Hashtable<String, Object>();
for (Map.Entry<String, Object> e : values.entrySet()) {
String key = e.getKey();
Object value = e.getValue();
Type type;
if (types != null && (type = types.get(key)) != null) {
if (type.scalar != null) {
value = convert(value, type.scalar);
} else if (type.vectorOf != null) {
Collection<Object> coll = (Collection<Object>) value;
Vector vector = new Vector();
for (Object o : coll) {
vector.add(convert(o, type.vectorOf));
}
value = vector;
} else if (type.arrayOf != null) {
if (value instanceof String && type.arrayOf.equals("byte")) {
value = Base64.decodeBase64((String) value);
} else {
Collection<Object> coll = (Collection<Object>) value;
Object array = Array.newInstance(getClass(type.arrayOf), coll.size());
int n = 0;
for (Object o : coll) {
Array.set(array, n++, convert(o, type.arrayOf));
}
value = array;
}
} else {
throw new IllegalArgumentException(
"Key " + key + " has type but neither scalar, vectorOf, nor arrayOf is set");
}
}
ht.put(key, value);
}
return ht;
}