/**
* Reads image meta data.
*
* @param oimage
* @return
*/
public static Map<String, String> readImageData(IIOImage oimage) {
Map<String, String> dict = new HashMap<String, String>();
IIOMetadata imageMetadata = oimage.getMetadata();
if (imageMetadata != null) {
IIOMetadataNode dimNode = (IIOMetadataNode) imageMetadata.getAsTree("javax_imageio_1.0");
NodeList nodes = dimNode.getElementsByTagName("HorizontalPixelSize");
int dpiX;
if (nodes.getLength() > 0) {
float dpcWidth = Float.parseFloat(nodes.item(0).getAttributes().item(0).getNodeValue());
dpiX = (int) Math.round(25.4f / dpcWidth);
} else {
dpiX = Toolkit.getDefaultToolkit().getScreenResolution();
}
dict.put("dpiX", String.valueOf(dpiX));
nodes = dimNode.getElementsByTagName("VerticalPixelSize");
int dpiY;
if (nodes.getLength() > 0) {
float dpcHeight = Float.parseFloat(nodes.item(0).getAttributes().item(0).getNodeValue());
dpiY = (int) Math.round(25.4f / dpcHeight);
} else {
dpiY = Toolkit.getDefaultToolkit().getScreenResolution();
}
dict.put("dpiY", String.valueOf(dpiY));
}
return dict;
}
/** highlight a route (maybe to show it's in use...) */
public void highlightRoute(String src, String dst) {
Iterator i = rows.iterator();
while (i.hasNext()) {
Map temp = (Map) i.next();
if (temp.get("Address").equals(dst) && temp.get("Pivot").equals(src)) {
temp.put("Active", Boolean.TRUE);
}
}
}
/** show the meterpreter routes . :) */
public void setRoutes(Route[] routes) {
Iterator i = rows.iterator();
while (i.hasNext()) {
Map temp = (Map) i.next();
for (int x = 0; x < routes.length; x++) {
Route r = routes[x];
if (r.shouldRoute(temp.get("Address") + "")) temp.put("Pivot", r.getGateway());
}
}
}
V get(final K key) {
if (refs == null) refs = new HashMap<>();
final V cachedValue = refs.get(key);
if (cachedValue != null) return cachedValue;
final V value = getInstance(key);
refs.put(key, value);
return value;
}
public void decode() throws IOException {
readTagDescriptors();
final MessageDigest md;
try {
md = MessageDigest.getInstance("SHA-512");
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
return;
}
final ComponentColorModel colorModel =
new ComponentColorModel(
ColorSpace.getInstance(ColorSpace.CS_sRGB),
true,
false,
Transparency.TRANSLUCENT,
DataBuffer.TYPE_BYTE);
final int[] bandOffsets = {2, 1, 0, 3};
final Map<String, String> duplicateGuard = new HashMap<String, String>();
final byte[] bytes = data.array();
final int[] tags = new int[8];
final List<String> symLinkCommand = new ArrayList<String>(4);
symLinkCommand.add("ln");
symLinkCommand.add("-s");
symLinkCommand.add(null);
symLinkCommand.add(null);
for (int fileIndex = 0; fileIndex < fileCount; fileIndex++) {
data.position(fileDescriptorsOffset + ((4 + 8) * fileIndex));
final int fileDataOffset = data.getInt();
int numOfTags = 8;
for (int i = 0; i < 8; i++) {
int tag = data.get() & 0xff;
if (tag == 0) {
numOfTags = i;
break;
}
tags[i] = tag;
}
data.position(fileDataSectionOffset + fileDataOffset);
final int artRows = data.getShort();
final int artColumns = data.getShort();
// skip unknown
data.position(data.position() + 28);
final int[] subimageOffsets = readNumericArray(9, false);
final int[] subimageWidths = readNumericArray(9, true);
final int[] subimageHeights = readNumericArray(9, true);
assert numOfTags >= 2;
final File dir;
final int tagStartIndexForFilename;
if (numOfTags == 2) {
tagStartIndexForFilename = 1;
dir = new File(outputDir, names[tags[0]].toString());
} else {
tagStartIndexForFilename = 2;
dir = new File(outputDir, names[tags[0]] + "/" + names[tags[1]]);
}
boolean dirCreated = false;
final int imageCount = artRows * artColumns;
for (int subImageIndex = 0; subImageIndex < imageCount; subImageIndex++) {
final int w = subimageWidths[subImageIndex];
final int h = subimageHeights[subImageIndex];
if (w <= 0 || h <= 0) {
continue;
}
final int srcPos = fileDataSectionOffset + fileDataOffset + subimageOffsets[subImageIndex];
final int srcLength = w * h * 4;
md.update(bytes, srcPos, srcLength);
md.update((byte) w);
md.update((byte) h);
final String digest = convertToHex(md.digest());
md.reset();
if (!dirCreated) {
//noinspection ResultOfMethodCallIgnored
dir.mkdirs();
dirCreated = true;
}
final byte[] bgra = new byte[srcLength];
// cannot pass bytes directly, offset in DataBufferByte is not working
System.arraycopy(bytes, srcPos, bgra, 0, bgra.length);
BufferedImage image =
new BufferedImage(
colorModel,
(WritableRaster)
Raster.createRaster(
new PixelInterleavedSampleModel(
DataBuffer.TYPE_BYTE, w, h, 4, w * 4, bandOffsets),
new DataBufferByte(bgra, bgra.length),
null),
false,
null);
final StringBuilder outFilename =
createOutpuFile(
numOfTags, tags, tagStartIndexForFilename, imageCount > 0, subImageIndex);
final String oldOutFilename = duplicateGuard.get(digest);
if (oldOutFilename == null) {
File file = new File(dir, outFilename.toString());
duplicateGuard.put(digest, file.getPath());
ImageIO.write(image, "png", file);
} else {
symLinkCommand.set(2, oldOutFilename);
symLinkCommand.set(3, dir + "/" + outFilename);
Process process = new ProcessBuilder(symLinkCommand).start();
try {
if (process.waitFor() != 0) {
throw new IOException(
"Can't create symlink " + symLinkCommand.get(2) + " " + symLinkCommand.get(3));
}
} catch (InterruptedException e) {
throw new IOException(e);
}
}
}
}
}
