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package com.it_jaros.jscanner;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.BitSet;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
public class ProgressBar {
private final ScheduledExecutorService ui = Executors.newSingleThreadScheduledExecutor();
private final Scan scan;
private final boolean quiet;
private final int columnWidth = ProgressBar.getColumnWidth();
private final Object outputLock = new Object();
public ProgressBar(Scan scan, boolean quiet) {
this.scan = scan;
this.quiet = quiet;
}
private void clearStatusLine() {
System.err.print("\r\033[2K");
System.err.flush();
}
public void printResult(ScanResult result, boolean showFilteredPorts) {
synchronized (outputLock) {
if (result.openPorts().isEmpty()
&& (!showFilteredPorts || result.filteredPorts().isEmpty())
&& result.errors().isEmpty()) {
return;
}
clearStatusLine();
printErrors(result);
printPortsResults(result, showFilteredPorts);
}
}
private void printErrors(ScanResult result) {
if (result.errors().isEmpty()) return;
System.err.printf(
"error: host scan failed | host=%s | errors: %d%n",
result.host(),
result.errors().size()
);
for (ScanFailure error : result.errors()) {
System.err.printf(
"port: %s: %s %s%n",
error.port(),
error.exception().type(),
error.exception().message()
);
}
}
private void printPortsResults(ScanResult result, boolean showFilteredPorts) {
if (result.openPorts().isEmpty() && (!showFilteredPorts || result.filteredPorts().isEmpty())) {
return;
}
System.out.println(result.host());
if (!result.openPorts().isEmpty()) {
System.out.printf("\t (%d) open:\t%s%n", result.openPorts().cardinality(), map(result.openPorts(), result.bannerRecognition()));
}
if (showFilteredPorts && !result.filteredPorts().isEmpty()) {
System.out.printf("\t (%d) filtered:\t%s%n", result.filteredPorts().cardinality(), map(result.filteredPorts()));
}
System.out.println();
System.out.flush();
}
private static String map(BitSet ports) {
return ports.stream().mapToObj(String::valueOf).collect(Collectors.joining(","));
}
private static String map(BitSet ports, java.util.HashMap<Integer, ServiceType> bannerRecognition) {
return ports.stream().mapToObj(port -> {
ServiceType serviceType = bannerRecognition.getOrDefault(port, ServiceType.UNKNOWN);
if (serviceType == ServiceType.UNKNOWN) {
return String.valueOf(port);
}
return port + "/" + serviceType.name().toLowerCase();
}).collect(Collectors.joining(","));
}
private static int getColumnWidth() {
try {
Process process = new ProcessBuilder("sh", "-c", "stty size < /dev/tty").start();
try (BufferedReader reader = new BufferedReader(
new InputStreamReader(process.getInputStream()))) {
String line = reader.readLine();
if (line != null && !line.isBlank()) {
Matcher matcher = Pattern.compile("^\\d+\\s+(\\d+)").matcher(line.trim());
if (matcher.matches()) {
return Integer.parseInt(matcher.group(1));
}
}
}
} catch (Exception ignored) {
// does not matter why it did not work
}
return 120;
}
public void start() {
if (quiet) {
return;
}
// although we don't print anything, we still need to
// gc all the done hosts
System.err.print("Scanning targets...\n\n");
ui.scheduleAtFixedRate(() -> {
synchronized (outputLock) {
printStatusLine(scan);
}
}, 1, 1000, TimeUnit.MILLISECONDS);
}
public void stop() {
ui.shutdownNow();
try {
ui.awaitTermination(1, TimeUnit.SECONDS);
} catch (InterruptedException ignored) {
Thread.currentThread().interrupt();
}
printStats();
}
private void printStats() {
System.out.println("\n--------------------");
System.out.println("Stats:");
System.out.println("Total hosts scanned: " + scan.getHostTotalCounter().max());
System.out.println("Peak concurrent connects: " + scan.getSocketCounter().max());
System.out.println("Peak concurrent threads: " + scan.getThreadCounter().max());
System.out.println("--------------------\n");
}
private void printStatusLine(final Scan scan) {
this.printStatusLine(scan.getHostCounter(), scan.getHostTotalCounter(), scan.getSocketCounter(), scan.getThreadCounter());
}
private void printStatusLine(
Counter hostCounter, Counter hostTotalCounter, Counter
socketCounter, Counter
threadCounter) {
int total = hostTotalCounter.current();
int running = hostCounter.current();
int done = total - running;
long percent = total == 0 ? 100 : done * 100L / total;
String line = String.format(
"hosts: %d running, %d done | sockets: %d active, %d peak | workers: %d active, %d peak",
running,
done,
socketCounter.current(),
socketCounter.max(),
threadCounter.current(),
threadCounter.max()
);
String barFormat = " | [%s] %3d%%";
int barWidth = Math.max(5, ProgressBar.getColumnWidth() - line.length() - barFormat.length());
String progressBar = progressBar(percent, barWidth);
String status = line + String.format(barFormat, progressBar, percent);
System.err.print("\r" + status);
System.err.flush();
}
private static String progressBar(long percent, int width) {
int filled = (int) (percent * width / 100);
return "#".repeat(filled) + "-".repeat(width - filled);
}
}
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