public synchronized void maybeInit() {
if (initialized) {
return;
}
initialized = true;
if (isDirectory || zip == null) {
return;
}
try {
zipFile = new ZipFile(zip);
urlHandler = new ElementURLStreamHandler(zipFile);
} catch (IOException ioe) {
/*
* Note: ZipException (a subclass of IOException)
* might get thrown by the ZipFile constructor
* (e.g. if the file isn't actually a zip/jar
* file).
*/
System.logE("Unable to open zip file: " + file, ioe);
zipFile = null;
}
}
/** Makes an array of dex/resource path elements, one per element of the given array. */
private static Element[] makeDexElements(
List<File> files, File optimizedDirectory, List<IOException> suppressedExceptions) {
ArrayList<Element> elements = new ArrayList<Element>();
/*
* Open all files and load the (direct or contained) dex files
* up front.
*/
for (File file : files) {
File zip = null;
DexFile dex = null;
String name = file.getName();
if (file.isDirectory()) {
// We support directories for looking up resources.
// This is only useful for running libcore tests.
elements.add(new Element(file, true, null, null));
} else if (file.isFile()) {
if (name.endsWith(DEX_SUFFIX)) {
// Raw dex file (not inside a zip/jar).
try {
dex = loadDexFile(file, optimizedDirectory);
} catch (IOException ex) {
System.logE("Unable to load dex file: " + file, ex);
}
} else {
zip = file;
try {
dex = loadDexFile(file, optimizedDirectory);
} catch (IOException suppressed) {
/*
* IOException might get thrown "legitimately" by the DexFile constructor if
* the zip file turns out to be resource-only (that is, no classes.dex file
* in it).
* Let dex == null and hang on to the exception to add to the tea-leaves for
* when findClass returns null.
*/
suppressedExceptions.add(suppressed);
}
}
} else {
System.logW("ClassLoader referenced unknown path: " + file);
}
if ((zip != null) || (dex != null)) {
elements.add(new Element(file, false, zip, dex));
}
}
return elements.toArray(new Element[elements.size()]);
}
// static initialization
// - load security properties files
// - load statically registered providers
// - if no provider description file found then load default providers
static {
boolean loaded = false;
try {
InputStream configStream = Security.class.getResourceAsStream("security.properties");
InputStream input = new BufferedInputStream(configStream);
secprops.load(input);
loaded = true;
configStream.close();
} catch (Exception ex) {
System.logE("Could not load 'security.properties'", ex);
}
if (!loaded) {
registerDefaultProviders();
}
Engine.door = new SecurityDoor();
}
