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Merge pull request #10 from cruxprotocol/feature/insecure-environment…
…-security-fixes Feature/insecure environment security fixes
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,118 @@ | ||
| package com.crux.sdk.security; | ||
|
|
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| import android.content.Context; | ||
| import android.os.Debug; | ||
| import android.content.pm.ApplicationInfo; | ||
|
|
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| import java.io.BufferedReader; | ||
| import java.io.FileReader; | ||
| import java.io.IOException; | ||
| import java.net.InetAddress; | ||
| import java.net.Socket; | ||
| import java.net.UnknownHostException; | ||
|
|
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| public class AntiDebug { | ||
|
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| private final Context mContext; | ||
|
|
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| public AntiDebug(Context context) { | ||
| mContext = context; | ||
| } | ||
|
|
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| public boolean isDebugging() { | ||
|
|
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| if (Debug.isDebuggerConnected()) { | ||
| return true; | ||
| } | ||
|
|
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| return (mContext.getApplicationContext().getApplicationInfo().flags & ApplicationInfo.FLAG_DEBUGGABLE) != 0; | ||
| } | ||
|
|
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| //**************************************** TracerPid begin ************************************ | ||
|
|
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| public static boolean isTracerPid() { | ||
|
|
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| if (isLocalPortUsing(23946)) { | ||
| return true; | ||
| } | ||
|
|
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| String tracerPid = getTracerPid(); | ||
| if (!"0".equals(tracerPid)) { | ||
| return true; | ||
| } | ||
|
|
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| return false; | ||
| } | ||
|
|
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| /*** | ||
| * true:already in using false:not using | ||
| * @param port | ||
| */ | ||
| private static boolean isLocalPortUsing(int port) { | ||
| boolean flag = true; | ||
| try { | ||
| flag = isPortUsing("127.0.0.1", port); | ||
| } catch (Exception e) { | ||
| } | ||
| return flag; | ||
| } | ||
|
|
||
| /*** | ||
| * true:already in using false:not using | ||
| * @param host | ||
| * @param port | ||
| * @throws UnknownHostException | ||
| */ | ||
| private static boolean isPortUsing(String host, int port) throws UnknownHostException { | ||
| boolean flag = false; | ||
| InetAddress theAddress = InetAddress.getByName(host); | ||
| try { | ||
| Socket socket = new Socket(theAddress, port); | ||
| flag = true; | ||
| } catch (IOException e) { | ||
| } | ||
| return flag; | ||
| } | ||
|
|
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| private static String getTracerPid() { | ||
| BufferedReader bufferedReader = null; | ||
| String readLine = ""; | ||
| try { | ||
| bufferedReader = new BufferedReader(new FileReader("/proc/self/status")); | ||
| do { | ||
| readLine = bufferedReader.readLine(); | ||
| if (readLine == null) { | ||
| break; | ||
| } | ||
|
|
||
| } while (!readLine.startsWith("TracerPid:")); | ||
| readLine = readLine.substring("TracerPid:".length()).trim(); | ||
|
|
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| } catch (Exception e) { | ||
| e.printStackTrace(); | ||
| } finally { | ||
| if (bufferedReader != null) { | ||
| try { | ||
| bufferedReader.close(); | ||
| } catch (Exception e) { | ||
| e.printStackTrace(); | ||
| } | ||
| } | ||
| } | ||
| return readLine; | ||
| } | ||
| //**************************************** TracerPid end ************************************** | ||
|
|
||
| //**************************************** network test begin ********************************* | ||
| public static boolean checkGrabData() { | ||
| try { | ||
| String proxyHost = System.getProperty("http.proxyHost"); | ||
| String proxyPort = System.getProperty("http.proxyPort"); | ||
| return proxyHost != null || proxyPort != null; | ||
| } catch (Exception e) { | ||
| e.printStackTrace(); | ||
| return false; | ||
| } | ||
| } | ||
| //**************************************** network test end *********************************** | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,45 @@ | ||
| package com.crux.sdk.security; | ||
|
|
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| import android.os.Build; | ||
|
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| import androidx.core.os.EnvironmentCompat; | ||
|
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| public class AntiEmulator { | ||
| public static boolean isEmulator() { | ||
| int rating = 0; | ||
| if (Build.PRODUCT.equals("sdk") || Build.PRODUCT.equals("google_sdk") || Build.PRODUCT.equals( | ||
| "sdk_x86") || Build.PRODUCT.equals("vbox86p")) { | ||
| rating = 1; | ||
| } | ||
|
|
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| if (Build.MANUFACTURER.equals(EnvironmentCompat.MEDIA_UNKNOWN) || Build.MANUFACTURER.equals( | ||
| "Genymotion")) { | ||
| rating++; | ||
| } | ||
|
|
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| if (Build.BRAND.equals("generic") || Build.BRAND.equals("generic_x86")) { | ||
| rating++; | ||
| } | ||
|
|
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| if (Build.DEVICE.equals("generic") || Build.DEVICE.equals("generic_x86") || Build.DEVICE.equals( | ||
| "vbox86p")) { | ||
| rating++; | ||
| } | ||
|
|
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| if (Build.MODEL.equals("sdk") || Build.MODEL.equals("google_sdk") || Build.MODEL.equals( | ||
| "Android SDK built for x86")) { | ||
| rating++; | ||
| } | ||
|
|
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| if (Build.HARDWARE.equals("goldfish") || Build.HARDWARE.equals("vbox86")) { | ||
| rating++; | ||
| } | ||
|
|
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| if (Build.FINGERPRINT.contains("generic/sdk/generic") || Build.FINGERPRINT.contains( | ||
| "generic_x86/sdk_x86/generic_x86") || Build.FINGERPRINT.contains( | ||
| "generic/google_sdk/generic") || Build.FINGERPRINT.contains("generic/vbox86p/vbox86p")) { | ||
| rating++; | ||
| } | ||
| return rating >= 2; | ||
| } | ||
| } |
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