908 lines
30 KiB
Java
908 lines
30 KiB
Java
/* MemorizingTrustManager - a TrustManager which asks the user about invalid
|
|
* certificates and memorizes their decision.
|
|
*
|
|
* Copyright (c) 2010 Georg Lukas <georg@op-co.de>
|
|
*
|
|
* MemorizingTrustManager.java contains the actual trust manager and interface
|
|
* code to create a MemorizingActivity and obtain the results.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
package de.duenndns.ssl;
|
|
|
|
import android.app.Activity;
|
|
import android.app.Application;
|
|
import android.app.Notification;
|
|
import android.app.NotificationManager;
|
|
import android.app.Service;
|
|
import android.app.PendingIntent;
|
|
import android.content.Context;
|
|
import android.content.Intent;
|
|
import android.net.Uri;
|
|
import android.os.SystemClock;
|
|
import android.preference.PreferenceManager;
|
|
import android.util.Base64;
|
|
import android.util.Log;
|
|
import android.util.SparseArray;
|
|
import android.os.Handler;
|
|
|
|
import org.json.JSONArray;
|
|
import org.json.JSONException;
|
|
import org.json.JSONObject;
|
|
|
|
import java.io.BufferedReader;
|
|
import java.io.File;
|
|
import java.io.FileInputStream;
|
|
import java.io.FileNotFoundException;
|
|
import java.io.FileOutputStream;
|
|
import java.io.IOException;
|
|
import java.io.InputStream;
|
|
import java.io.InputStreamReader;
|
|
import java.net.MalformedURLException;
|
|
import java.net.URL;
|
|
import java.security.NoSuchAlgorithmException;
|
|
import java.security.cert.*;
|
|
import java.security.KeyStore;
|
|
import java.security.KeyStoreException;
|
|
import java.security.MessageDigest;
|
|
import java.util.ArrayList;
|
|
import java.util.logging.Level;
|
|
import java.util.logging.Logger;
|
|
import java.text.SimpleDateFormat;
|
|
import java.util.Collection;
|
|
import java.util.Enumeration;
|
|
import java.util.List;
|
|
import java.util.Locale;
|
|
import java.util.regex.Pattern;
|
|
|
|
import javax.net.ssl.HostnameVerifier;
|
|
import javax.net.ssl.HttpsURLConnection;
|
|
import javax.net.ssl.SSLSession;
|
|
import javax.net.ssl.TrustManager;
|
|
import javax.net.ssl.TrustManagerFactory;
|
|
import javax.net.ssl.X509TrustManager;
|
|
|
|
/**
|
|
* A X509 trust manager implementation which asks the user about invalid
|
|
* certificates and memorizes their decision.
|
|
* <p>
|
|
* The certificate validity is checked using the system default X509
|
|
* TrustManager, creating a query Dialog if the check fails.
|
|
* <p>
|
|
* <b>WARNING:</b> This only works if a dedicated thread is used for
|
|
* opening sockets!
|
|
*/
|
|
public class MemorizingTrustManager {
|
|
|
|
|
|
private static final Pattern PATTERN_IPV4 = Pattern.compile("\\A(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}\\z");
|
|
private static final Pattern PATTERN_IPV6_HEX4DECCOMPRESSED = Pattern.compile("\\A((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?) ::((?:[0-9A-Fa-f]{1,4}:)*)(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}\\z");
|
|
private static final Pattern PATTERN_IPV6_6HEX4DEC = Pattern.compile("\\A((?:[0-9A-Fa-f]{1,4}:){6,6})(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}\\z");
|
|
private static final Pattern PATTERN_IPV6_HEXCOMPRESSED = Pattern.compile("\\A((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?)::((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?)\\z");
|
|
private static final Pattern PATTERN_IPV6 = Pattern.compile("\\A(?:[0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}\\z");
|
|
|
|
final static String DECISION_INTENT = "de.duenndns.ssl.DECISION";
|
|
final static String DECISION_INTENT_ID = DECISION_INTENT + ".decisionId";
|
|
final static String DECISION_INTENT_CERT = DECISION_INTENT + ".cert";
|
|
final static String DECISION_INTENT_CHOICE = DECISION_INTENT + ".decisionChoice";
|
|
|
|
private final static Logger LOGGER = Logger.getLogger(MemorizingTrustManager.class.getName());
|
|
final static String DECISION_TITLE_ID = DECISION_INTENT + ".titleId";
|
|
private final static int NOTIFICATION_ID = 100509;
|
|
|
|
final static String NO_TRUST_ANCHOR = "Trust anchor for certification path not found.";
|
|
|
|
static String KEYSTORE_DIR = "KeyStore";
|
|
static String KEYSTORE_FILE = "KeyStore.bks";
|
|
|
|
Context master;
|
|
Activity foregroundAct;
|
|
NotificationManager notificationManager;
|
|
private static int decisionId = 0;
|
|
private static SparseArray<MTMDecision> openDecisions = new SparseArray<MTMDecision>();
|
|
|
|
Handler masterHandler;
|
|
private File keyStoreFile;
|
|
private KeyStore appKeyStore;
|
|
private X509TrustManager defaultTrustManager;
|
|
private X509TrustManager appTrustManager;
|
|
private String poshCacheDir;
|
|
|
|
/** Creates an instance of the MemorizingTrustManager class that falls back to a custom TrustManager.
|
|
*
|
|
* You need to supply the application context. This has to be one of:
|
|
* - Application
|
|
* - Activity
|
|
* - Service
|
|
*
|
|
* The context is used for file management, to display the dialog /
|
|
* notification and for obtaining translated strings.
|
|
*
|
|
* @param m Context for the application.
|
|
* @param defaultTrustManager Delegate trust management to this TM. If null, the user must accept every certificate.
|
|
*/
|
|
public MemorizingTrustManager(Context m, X509TrustManager defaultTrustManager) {
|
|
init(m);
|
|
this.appTrustManager = getTrustManager(appKeyStore);
|
|
this.defaultTrustManager = defaultTrustManager;
|
|
}
|
|
|
|
/** Creates an instance of the MemorizingTrustManager class using the system X509TrustManager.
|
|
*
|
|
* You need to supply the application context. This has to be one of:
|
|
* - Application
|
|
* - Activity
|
|
* - Service
|
|
*
|
|
* The context is used for file management, to display the dialog /
|
|
* notification and for obtaining translated strings.
|
|
*
|
|
* @param m Context for the application.
|
|
*/
|
|
public MemorizingTrustManager(Context m) {
|
|
init(m);
|
|
this.appTrustManager = getTrustManager(appKeyStore);
|
|
this.defaultTrustManager = getTrustManager(null);
|
|
}
|
|
|
|
void init(Context m) {
|
|
master = m;
|
|
masterHandler = new Handler(m.getMainLooper());
|
|
notificationManager = (NotificationManager)master.getSystemService(Context.NOTIFICATION_SERVICE);
|
|
|
|
Application app;
|
|
if (m instanceof Application) {
|
|
app = (Application)m;
|
|
} else if (m instanceof Service) {
|
|
app = ((Service)m).getApplication();
|
|
} else if (m instanceof Activity) {
|
|
app = ((Activity)m).getApplication();
|
|
} else throw new ClassCastException("MemorizingTrustManager context must be either Activity or Service!");
|
|
|
|
File dir = app.getDir(KEYSTORE_DIR, Context.MODE_PRIVATE);
|
|
keyStoreFile = new File(dir + File.separator + KEYSTORE_FILE);
|
|
|
|
poshCacheDir = app.getFilesDir().getAbsolutePath()+"/posh_cache/";
|
|
|
|
appKeyStore = loadAppKeyStore();
|
|
}
|
|
|
|
|
|
/**
|
|
* Binds an Activity to the MTM for displaying the query dialog.
|
|
*
|
|
* This is useful if your connection is run from a service that is
|
|
* triggered by user interaction -- in such cases the activity is
|
|
* visible and the user tends to ignore the service notification.
|
|
*
|
|
* You should never have a hidden activity bound to MTM! Use this
|
|
* function in onResume() and @see unbindDisplayActivity in onPause().
|
|
*
|
|
* @param act Activity to be bound
|
|
*/
|
|
public void bindDisplayActivity(Activity act) {
|
|
foregroundAct = act;
|
|
}
|
|
|
|
/**
|
|
* Removes an Activity from the MTM display stack.
|
|
*
|
|
* Always call this function when the Activity added with
|
|
* {@link #bindDisplayActivity(Activity)} is hidden.
|
|
*
|
|
* @param act Activity to be unbound
|
|
*/
|
|
public void unbindDisplayActivity(Activity act) {
|
|
// do not remove if it was overridden by a different activity
|
|
if (foregroundAct == act)
|
|
foregroundAct = null;
|
|
}
|
|
|
|
/**
|
|
* Changes the path for the KeyStore file.
|
|
*
|
|
* The actual filename relative to the app's directory will be
|
|
* <code>app_<i>dirname</i>/<i>filename</i></code>.
|
|
*
|
|
* @param dirname directory to store the KeyStore.
|
|
* @param filename file name for the KeyStore.
|
|
*/
|
|
public static void setKeyStoreFile(String dirname, String filename) {
|
|
KEYSTORE_DIR = dirname;
|
|
KEYSTORE_FILE = filename;
|
|
}
|
|
|
|
/**
|
|
* Get a list of all certificate aliases stored in MTM.
|
|
*
|
|
* @return an {@link Enumeration} of all certificates
|
|
*/
|
|
public Enumeration<String> getCertificates() {
|
|
try {
|
|
return appKeyStore.aliases();
|
|
} catch (KeyStoreException e) {
|
|
// this should never happen, however...
|
|
throw new RuntimeException(e);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get a certificate for a given alias.
|
|
*
|
|
* @param alias the certificate's alias as returned by {@link #getCertificates()}.
|
|
*
|
|
* @return the certificate associated with the alias or <tt>null</tt> if none found.
|
|
*/
|
|
public Certificate getCertificate(String alias) {
|
|
try {
|
|
return appKeyStore.getCertificate(alias);
|
|
} catch (KeyStoreException e) {
|
|
// this should never happen, however...
|
|
throw new RuntimeException(e);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Removes the given certificate from MTMs key store.
|
|
*
|
|
* <p>
|
|
* <b>WARNING</b>: this does not immediately invalidate the certificate. It is
|
|
* well possible that (a) data is transmitted over still existing connections or
|
|
* (b) new connections are created using TLS renegotiation, without a new cert
|
|
* check.
|
|
* </p>
|
|
* @param alias the certificate's alias as returned by {@link #getCertificates()}.
|
|
*
|
|
* @throws KeyStoreException if the certificate could not be deleted.
|
|
*/
|
|
public void deleteCertificate(String alias) throws KeyStoreException {
|
|
appKeyStore.deleteEntry(alias);
|
|
keyStoreUpdated();
|
|
}
|
|
|
|
/**
|
|
* Creates a new hostname verifier supporting user interaction.
|
|
*
|
|
* <p>This method creates a new {@link HostnameVerifier} that is bound to
|
|
* the given instance of {@link MemorizingTrustManager}, and leverages an
|
|
* existing {@link HostnameVerifier}. The returned verifier performs the
|
|
* following steps, returning as soon as one of them succeeds:
|
|
* </p>
|
|
* <ol>
|
|
* <li>Success, if the wrapped defaultVerifier accepts the certificate.</li>
|
|
* <li>Success, if the server certificate is stored in the keystore under the given hostname.</li>
|
|
* <li>Ask the user and return accordingly.</li>
|
|
* <li>Failure on exception.</li>
|
|
* </ol>
|
|
*
|
|
* @param defaultVerifier the {@link HostnameVerifier} that should perform the actual check
|
|
* @return a new hostname verifier using the MTM's key store
|
|
*
|
|
* @throws IllegalArgumentException if the defaultVerifier parameter is null
|
|
*/
|
|
public HostnameVerifier wrapHostnameVerifier(final HostnameVerifier defaultVerifier) {
|
|
if (defaultVerifier == null)
|
|
throw new IllegalArgumentException("The default verifier may not be null");
|
|
|
|
return new MemorizingHostnameVerifier(defaultVerifier);
|
|
}
|
|
|
|
public HostnameVerifier wrapHostnameVerifierNonInteractive(final HostnameVerifier defaultVerifier) {
|
|
if (defaultVerifier == null)
|
|
throw new IllegalArgumentException("The default verifier may not be null");
|
|
|
|
return new NonInteractiveMemorizingHostnameVerifier(defaultVerifier);
|
|
}
|
|
|
|
X509TrustManager getTrustManager(KeyStore ks) {
|
|
try {
|
|
TrustManagerFactory tmf = TrustManagerFactory.getInstance("X509");
|
|
tmf.init(ks);
|
|
for (TrustManager t : tmf.getTrustManagers()) {
|
|
if (t instanceof X509TrustManager) {
|
|
return (X509TrustManager)t;
|
|
}
|
|
}
|
|
} catch (Exception e) {
|
|
// Here, we are covering up errors. It might be more useful
|
|
// however to throw them out of the constructor so the
|
|
// embedding app knows something went wrong.
|
|
LOGGER.log(Level.SEVERE, "getTrustManager(" + ks + ")", e);
|
|
}
|
|
return null;
|
|
}
|
|
|
|
KeyStore loadAppKeyStore() {
|
|
KeyStore ks;
|
|
try {
|
|
ks = KeyStore.getInstance(KeyStore.getDefaultType());
|
|
} catch (KeyStoreException e) {
|
|
LOGGER.log(Level.SEVERE, "getAppKeyStore()", e);
|
|
return null;
|
|
}
|
|
try {
|
|
ks.load(null, null);
|
|
ks.load(new java.io.FileInputStream(keyStoreFile), "MTM".toCharArray());
|
|
} catch (java.io.FileNotFoundException e) {
|
|
LOGGER.log(Level.INFO, "getAppKeyStore(" + keyStoreFile + ") - file does not exist");
|
|
} catch (Exception e) {
|
|
LOGGER.log(Level.SEVERE, "getAppKeyStore(" + keyStoreFile + ")", e);
|
|
}
|
|
return ks;
|
|
}
|
|
|
|
void storeCert(String alias, Certificate cert) {
|
|
try {
|
|
appKeyStore.setCertificateEntry(alias, cert);
|
|
} catch (KeyStoreException e) {
|
|
LOGGER.log(Level.SEVERE, "storeCert(" + cert + ")", e);
|
|
return;
|
|
}
|
|
keyStoreUpdated();
|
|
}
|
|
|
|
void storeCert(X509Certificate cert) {
|
|
storeCert(cert.getSubjectDN().toString(), cert);
|
|
}
|
|
|
|
void keyStoreUpdated() {
|
|
// reload appTrustManager
|
|
appTrustManager = getTrustManager(appKeyStore);
|
|
|
|
// store KeyStore to file
|
|
java.io.FileOutputStream fos = null;
|
|
try {
|
|
fos = new java.io.FileOutputStream(keyStoreFile);
|
|
appKeyStore.store(fos, "MTM".toCharArray());
|
|
} catch (Exception e) {
|
|
LOGGER.log(Level.SEVERE, "storeCert(" + keyStoreFile + ")", e);
|
|
} finally {
|
|
if (fos != null) {
|
|
try {
|
|
fos.close();
|
|
} catch (IOException e) {
|
|
LOGGER.log(Level.SEVERE, "storeCert(" + keyStoreFile + ")", e);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// if the certificate is stored in the app key store, it is considered "known"
|
|
private boolean isCertKnown(X509Certificate cert) {
|
|
try {
|
|
return appKeyStore.getCertificateAlias(cert) != null;
|
|
} catch (KeyStoreException e) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
private boolean isExpiredException(Throwable e) {
|
|
do {
|
|
if (e instanceof CertificateExpiredException)
|
|
return true;
|
|
e = e.getCause();
|
|
} while (e != null);
|
|
return false;
|
|
}
|
|
|
|
public void checkCertTrusted(X509Certificate[] chain, String authType, String domain, boolean isServer, boolean interactive)
|
|
throws CertificateException
|
|
{
|
|
LOGGER.log(Level.FINE, "checkCertTrusted(" + chain + ", " + authType + ", " + isServer + ")");
|
|
try {
|
|
LOGGER.log(Level.FINE, "checkCertTrusted: trying appTrustManager");
|
|
if (isServer)
|
|
appTrustManager.checkServerTrusted(chain, authType);
|
|
else
|
|
appTrustManager.checkClientTrusted(chain, authType);
|
|
} catch (CertificateException ae) {
|
|
LOGGER.log(Level.FINER, "checkCertTrusted: appTrustManager failed", ae);
|
|
// if the cert is stored in our appTrustManager, we ignore expiredness
|
|
if (isExpiredException(ae)) {
|
|
LOGGER.log(Level.INFO, "checkCertTrusted: accepting expired certificate from keystore");
|
|
return;
|
|
}
|
|
if (isCertKnown(chain[0])) {
|
|
LOGGER.log(Level.INFO, "checkCertTrusted: accepting cert already stored in keystore");
|
|
return;
|
|
}
|
|
try {
|
|
if (defaultTrustManager == null)
|
|
throw ae;
|
|
LOGGER.log(Level.FINE, "checkCertTrusted: trying defaultTrustManager");
|
|
if (isServer)
|
|
defaultTrustManager.checkServerTrusted(chain, authType);
|
|
else
|
|
defaultTrustManager.checkClientTrusted(chain, authType);
|
|
} catch (CertificateException e) {
|
|
boolean trustSystemCAs = !PreferenceManager.getDefaultSharedPreferences(master).getBoolean("dont_trust_system_cas", false);
|
|
if (domain != null && isServer && trustSystemCAs && !isIp(domain)) {
|
|
String hash = getBase64Hash(chain[0],"SHA-256");
|
|
List<String> fingerprints = getPoshFingerprints(domain);
|
|
if (hash != null && fingerprints.contains(hash)) {
|
|
Log.d("mtm","trusted cert fingerprint of "+domain+" via posh");
|
|
return;
|
|
}
|
|
}
|
|
e.printStackTrace();
|
|
if (interactive) {
|
|
interactCert(chain, authType, e);
|
|
} else {
|
|
throw e;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
private List<String> getPoshFingerprints(String domain) {
|
|
List<String> cached = getPoshFingerprintsFromCache(domain);
|
|
if (cached == null) {
|
|
return getPoshFingerprintsFromServer(domain);
|
|
} else {
|
|
return cached;
|
|
}
|
|
}
|
|
|
|
private List<String> getPoshFingerprintsFromServer(String domain) {
|
|
return getPoshFingerprintsFromServer(domain, "https://"+domain+"/.well-known/posh/xmpp-client.json",-1,true);
|
|
}
|
|
|
|
private List<String> getPoshFingerprintsFromServer(String domain, String url, int maxTtl, boolean followUrl) {
|
|
Log.d("mtm","downloading json for "+domain+" from "+url);
|
|
try {
|
|
List<String> results = new ArrayList<>();
|
|
HttpsURLConnection connection = (HttpsURLConnection) new URL(url).openConnection();
|
|
connection.setConnectTimeout(5000);
|
|
connection.setReadTimeout(5000);
|
|
BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
|
|
String inputLine;
|
|
StringBuilder builder = new StringBuilder();
|
|
while ((inputLine = in.readLine()) != null) {
|
|
builder.append(inputLine);
|
|
}
|
|
JSONObject jsonObject = new JSONObject(builder.toString());
|
|
in.close();
|
|
int expires = jsonObject.getInt("expires");
|
|
if (expires <= 0) {
|
|
return new ArrayList<>();
|
|
}
|
|
if (maxTtl >= 0) {
|
|
expires = Math.min(maxTtl,expires);
|
|
}
|
|
String redirect;
|
|
try {
|
|
redirect = jsonObject.getString("url");
|
|
} catch (JSONException e) {
|
|
redirect = null;
|
|
}
|
|
if (followUrl && redirect != null && redirect.toLowerCase().startsWith("https")) {
|
|
return getPoshFingerprintsFromServer(domain, redirect, expires, false);
|
|
}
|
|
JSONArray fingerprints = jsonObject.getJSONArray("fingerprints");
|
|
for(int i = 0; i < fingerprints.length(); i++) {
|
|
JSONObject fingerprint = fingerprints.getJSONObject(i);
|
|
String sha256 = fingerprint.getString("sha-256");
|
|
if (sha256 != null) {
|
|
results.add(sha256);
|
|
}
|
|
}
|
|
writeFingerprintsToCache(domain, results,1000L * expires+System.currentTimeMillis());
|
|
return results;
|
|
} catch (Exception e) {
|
|
Log.d("mtm","error fetching posh "+e.getMessage());
|
|
return new ArrayList<>();
|
|
}
|
|
}
|
|
|
|
private File getPoshCacheFile(String domain) {
|
|
return new File(poshCacheDir+domain+".json");
|
|
}
|
|
|
|
private void writeFingerprintsToCache(String domain, List<String> results, long expires) {
|
|
File file = getPoshCacheFile(domain);
|
|
file.getParentFile().mkdirs();
|
|
try {
|
|
file.createNewFile();
|
|
JSONObject jsonObject = new JSONObject();
|
|
jsonObject.put("expires",expires);
|
|
jsonObject.put("fingerprints",new JSONArray(results));
|
|
FileOutputStream outputStream = new FileOutputStream(file);
|
|
outputStream.write(jsonObject.toString().getBytes());
|
|
outputStream.flush();
|
|
outputStream.close();
|
|
} catch (Exception e) {
|
|
e.printStackTrace();
|
|
}
|
|
}
|
|
|
|
private List<String> getPoshFingerprintsFromCache(String domain) {
|
|
File file = getPoshCacheFile(domain);
|
|
try {
|
|
InputStream is = new FileInputStream(file);
|
|
BufferedReader buf = new BufferedReader(new InputStreamReader(is));
|
|
|
|
String line = buf.readLine();
|
|
StringBuilder sb = new StringBuilder();
|
|
|
|
while(line != null){
|
|
sb.append(line).append("\n");
|
|
line = buf.readLine();
|
|
}
|
|
JSONObject jsonObject = new JSONObject(sb.toString());
|
|
is.close();
|
|
long expires = jsonObject.getLong("expires");
|
|
long expiresIn = expires - System.currentTimeMillis();
|
|
if (expiresIn < 0) {
|
|
file.delete();
|
|
return null;
|
|
} else {
|
|
Log.d("mtm","posh fingerprints expire in "+(expiresIn/1000)+"s");
|
|
}
|
|
List<String> result = new ArrayList<>();
|
|
JSONArray jsonArray = jsonObject.getJSONArray("fingerprints");
|
|
for(int i = 0; i < jsonArray.length(); ++i) {
|
|
result.add(jsonArray.getString(i));
|
|
}
|
|
return result;
|
|
} catch (FileNotFoundException e) {
|
|
return null;
|
|
} catch (IOException e) {
|
|
return null;
|
|
} catch (JSONException e) {
|
|
file.delete();
|
|
return null;
|
|
}
|
|
}
|
|
|
|
private static boolean isIp(final String server) {
|
|
return server != null && (
|
|
PATTERN_IPV4.matcher(server).matches()
|
|
|| PATTERN_IPV6.matcher(server).matches()
|
|
|| PATTERN_IPV6_6HEX4DEC.matcher(server).matches()
|
|
|| PATTERN_IPV6_HEX4DECCOMPRESSED.matcher(server).matches()
|
|
|| PATTERN_IPV6_HEXCOMPRESSED.matcher(server).matches());
|
|
}
|
|
|
|
private static String getBase64Hash(X509Certificate certificate, String digest) throws CertificateEncodingException {
|
|
MessageDigest md;
|
|
try {
|
|
md = MessageDigest.getInstance(digest);
|
|
} catch (NoSuchAlgorithmException e) {
|
|
return null;
|
|
}
|
|
md.update(certificate.getEncoded());
|
|
return Base64.encodeToString(md.digest(),Base64.NO_WRAP);
|
|
}
|
|
|
|
private X509Certificate[] getAcceptedIssuers() {
|
|
LOGGER.log(Level.FINE, "getAcceptedIssuers()");
|
|
return defaultTrustManager.getAcceptedIssuers();
|
|
}
|
|
|
|
private int createDecisionId(MTMDecision d) {
|
|
int myId;
|
|
synchronized(openDecisions) {
|
|
myId = decisionId;
|
|
openDecisions.put(myId, d);
|
|
decisionId += 1;
|
|
}
|
|
return myId;
|
|
}
|
|
|
|
private static String hexString(byte[] data) {
|
|
StringBuffer si = new StringBuffer();
|
|
for (int i = 0; i < data.length; i++) {
|
|
si.append(String.format("%02x", data[i]));
|
|
if (i < data.length - 1)
|
|
si.append(":");
|
|
}
|
|
return si.toString();
|
|
}
|
|
|
|
private static String certHash(final X509Certificate cert, String digest) {
|
|
try {
|
|
MessageDigest md = MessageDigest.getInstance(digest);
|
|
md.update(cert.getEncoded());
|
|
return hexString(md.digest());
|
|
} catch (java.security.cert.CertificateEncodingException e) {
|
|
return e.getMessage();
|
|
} catch (java.security.NoSuchAlgorithmException e) {
|
|
return e.getMessage();
|
|
}
|
|
}
|
|
|
|
private void certDetails(StringBuffer si, X509Certificate c) {
|
|
SimpleDateFormat validityDateFormater = new SimpleDateFormat("yyyy-MM-dd");
|
|
si.append("\n");
|
|
si.append(c.getSubjectDN().toString());
|
|
si.append("\n");
|
|
si.append(validityDateFormater.format(c.getNotBefore()));
|
|
si.append(" - ");
|
|
si.append(validityDateFormater.format(c.getNotAfter()));
|
|
si.append("\nSHA-256: ");
|
|
si.append(certHash(c, "SHA-256"));
|
|
si.append("\nSHA-1: ");
|
|
si.append(certHash(c, "SHA-1"));
|
|
si.append("\nSigned by: ");
|
|
si.append(c.getIssuerDN().toString());
|
|
si.append("\n");
|
|
}
|
|
|
|
private String certChainMessage(final X509Certificate[] chain, CertificateException cause) {
|
|
Throwable e = cause;
|
|
LOGGER.log(Level.FINE, "certChainMessage for " + e);
|
|
StringBuffer si = new StringBuffer();
|
|
if (e.getCause() != null) {
|
|
e = e.getCause();
|
|
// HACK: there is no sane way to check if the error is a "trust anchor
|
|
// not found", so we use string comparison.
|
|
if (NO_TRUST_ANCHOR.equals(e.getMessage())) {
|
|
si.append(master.getString(R.string.mtm_trust_anchor));
|
|
} else
|
|
si.append(e.getLocalizedMessage());
|
|
si.append("\n");
|
|
}
|
|
si.append("\n");
|
|
si.append(master.getString(R.string.mtm_connect_anyway));
|
|
si.append("\n\n");
|
|
si.append(master.getString(R.string.mtm_cert_details));
|
|
for (X509Certificate c : chain) {
|
|
certDetails(si, c);
|
|
}
|
|
return si.toString();
|
|
}
|
|
|
|
private String hostNameMessage(X509Certificate cert, String hostname) {
|
|
StringBuffer si = new StringBuffer();
|
|
|
|
si.append(master.getString(R.string.mtm_hostname_mismatch, hostname));
|
|
si.append("\n\n");
|
|
try {
|
|
Collection<List<?>> sans = cert.getSubjectAlternativeNames();
|
|
if (sans == null) {
|
|
si.append(cert.getSubjectDN());
|
|
si.append("\n");
|
|
} else for (List<?> altName : sans) {
|
|
Object name = altName.get(1);
|
|
if (name instanceof String) {
|
|
si.append("[");
|
|
si.append((Integer)altName.get(0));
|
|
si.append("] ");
|
|
si.append(name);
|
|
si.append("\n");
|
|
}
|
|
}
|
|
} catch (CertificateParsingException e) {
|
|
e.printStackTrace();
|
|
si.append("<Parsing error: ");
|
|
si.append(e.getLocalizedMessage());
|
|
si.append(">\n");
|
|
}
|
|
si.append("\n");
|
|
si.append(master.getString(R.string.mtm_connect_anyway));
|
|
si.append("\n\n");
|
|
si.append(master.getString(R.string.mtm_cert_details));
|
|
certDetails(si, cert);
|
|
return si.toString();
|
|
}
|
|
/**
|
|
* Returns the top-most entry of the activity stack.
|
|
*
|
|
* @return the Context of the currently bound UI or the master context if none is bound
|
|
*/
|
|
Context getUI() {
|
|
return (foregroundAct != null) ? foregroundAct : master;
|
|
}
|
|
|
|
int interact(final String message, final int titleId) {
|
|
/* prepare the MTMDecision blocker object */
|
|
MTMDecision choice = new MTMDecision();
|
|
final int myId = createDecisionId(choice);
|
|
|
|
masterHandler.post(new Runnable() {
|
|
public void run() {
|
|
Intent ni = new Intent(master, MemorizingActivity.class);
|
|
ni.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
|
|
ni.setData(Uri.parse(MemorizingTrustManager.class.getName() + "/" + myId));
|
|
ni.putExtra(DECISION_INTENT_ID, myId);
|
|
ni.putExtra(DECISION_INTENT_CERT, message);
|
|
ni.putExtra(DECISION_TITLE_ID, titleId);
|
|
|
|
// we try to directly start the activity and fall back to
|
|
// making a notification
|
|
try {
|
|
getUI().startActivity(ni);
|
|
} catch (Exception e) {
|
|
LOGGER.log(Level.FINE, "startActivity(MemorizingActivity)", e);
|
|
}
|
|
}
|
|
});
|
|
|
|
LOGGER.log(Level.FINE, "openDecisions: " + openDecisions + ", waiting on " + myId);
|
|
try {
|
|
synchronized(choice) { choice.wait(); }
|
|
} catch (InterruptedException e) {
|
|
LOGGER.log(Level.FINER, "InterruptedException", e);
|
|
}
|
|
LOGGER.log(Level.FINE, "finished wait on " + myId + ": " + choice.state);
|
|
return choice.state;
|
|
}
|
|
|
|
void interactCert(final X509Certificate[] chain, String authType, CertificateException cause)
|
|
throws CertificateException
|
|
{
|
|
switch (interact(certChainMessage(chain, cause), R.string.mtm_accept_cert)) {
|
|
case MTMDecision.DECISION_ALWAYS:
|
|
storeCert(chain[0]); // only store the server cert, not the whole chain
|
|
case MTMDecision.DECISION_ONCE:
|
|
break;
|
|
default:
|
|
throw (cause);
|
|
}
|
|
}
|
|
|
|
boolean interactHostname(X509Certificate cert, String hostname)
|
|
{
|
|
switch (interact(hostNameMessage(cert, hostname), R.string.mtm_accept_servername)) {
|
|
case MTMDecision.DECISION_ALWAYS:
|
|
storeCert(hostname, cert);
|
|
case MTMDecision.DECISION_ONCE:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
protected static void interactResult(int decisionId, int choice) {
|
|
MTMDecision d;
|
|
synchronized(openDecisions) {
|
|
d = openDecisions.get(decisionId);
|
|
openDecisions.remove(decisionId);
|
|
}
|
|
if (d == null) {
|
|
LOGGER.log(Level.SEVERE, "interactResult: aborting due to stale decision reference!");
|
|
return;
|
|
}
|
|
synchronized(d) {
|
|
d.state = choice;
|
|
d.notify();
|
|
}
|
|
}
|
|
|
|
class MemorizingHostnameVerifier implements HostnameVerifier {
|
|
private HostnameVerifier defaultVerifier;
|
|
|
|
public MemorizingHostnameVerifier(HostnameVerifier wrapped) {
|
|
defaultVerifier = wrapped;
|
|
}
|
|
|
|
protected boolean verify(String hostname, SSLSession session, boolean interactive) {
|
|
LOGGER.log(Level.FINE, "hostname verifier for " + hostname + ", trying default verifier first");
|
|
// if the default verifier accepts the hostname, we are done
|
|
if (defaultVerifier.verify(hostname, session)) {
|
|
LOGGER.log(Level.FINE, "default verifier accepted " + hostname);
|
|
return true;
|
|
}
|
|
// otherwise, we check if the hostname is an alias for this cert in our keystore
|
|
try {
|
|
X509Certificate cert = (X509Certificate)session.getPeerCertificates()[0];
|
|
//Log.d(TAG, "cert: " + cert);
|
|
if (cert.equals(appKeyStore.getCertificate(hostname.toLowerCase(Locale.US)))) {
|
|
LOGGER.log(Level.FINE, "certificate for " + hostname + " is in our keystore. accepting.");
|
|
return true;
|
|
} else {
|
|
LOGGER.log(Level.FINE, "server " + hostname + " provided wrong certificate, asking user.");
|
|
if (interactive) {
|
|
return interactHostname(cert, hostname);
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
} catch (Exception e) {
|
|
e.printStackTrace();
|
|
return false;
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public boolean verify(String hostname, SSLSession session) {
|
|
return verify(hostname, session, true);
|
|
}
|
|
}
|
|
|
|
class NonInteractiveMemorizingHostnameVerifier extends MemorizingHostnameVerifier {
|
|
|
|
public NonInteractiveMemorizingHostnameVerifier(HostnameVerifier wrapped) {
|
|
super(wrapped);
|
|
}
|
|
@Override
|
|
public boolean verify(String hostname, SSLSession session) {
|
|
return verify(hostname, session, false);
|
|
}
|
|
|
|
|
|
}
|
|
|
|
public X509TrustManager getNonInteractive(String domain) {
|
|
return new NonInteractiveMemorizingTrustManager(domain);
|
|
}
|
|
|
|
public X509TrustManager getInteractive(String domain) {
|
|
return new InteractiveMemorizingTrustManager(domain);
|
|
}
|
|
|
|
public X509TrustManager getNonInteractive() {
|
|
return new NonInteractiveMemorizingTrustManager(null);
|
|
}
|
|
|
|
public X509TrustManager getInteractive() {
|
|
return new InteractiveMemorizingTrustManager(null);
|
|
}
|
|
|
|
private class NonInteractiveMemorizingTrustManager implements X509TrustManager {
|
|
|
|
private final String domain;
|
|
|
|
public NonInteractiveMemorizingTrustManager(String domain) {
|
|
this.domain = domain;
|
|
}
|
|
|
|
@Override
|
|
public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {
|
|
MemorizingTrustManager.this.checkCertTrusted(chain, authType, domain, false, false);
|
|
}
|
|
|
|
@Override
|
|
public void checkServerTrusted(X509Certificate[] chain, String authType)
|
|
throws CertificateException {
|
|
MemorizingTrustManager.this.checkCertTrusted(chain, authType, domain, true, false);
|
|
}
|
|
|
|
@Override
|
|
public X509Certificate[] getAcceptedIssuers() {
|
|
return MemorizingTrustManager.this.getAcceptedIssuers();
|
|
}
|
|
|
|
}
|
|
|
|
private class InteractiveMemorizingTrustManager implements X509TrustManager {
|
|
private final String domain;
|
|
|
|
public InteractiveMemorizingTrustManager(String domain) {
|
|
this.domain = domain;
|
|
}
|
|
|
|
@Override
|
|
public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {
|
|
MemorizingTrustManager.this.checkCertTrusted(chain, authType, domain, false, true);
|
|
}
|
|
|
|
@Override
|
|
public void checkServerTrusted(X509Certificate[] chain, String authType)
|
|
throws CertificateException {
|
|
MemorizingTrustManager.this.checkCertTrusted(chain, authType, domain, true, true);
|
|
}
|
|
|
|
@Override
|
|
public X509Certificate[] getAcceptedIssuers() {
|
|
return MemorizingTrustManager.this.getAcceptedIssuers();
|
|
}
|
|
}
|
|
}
|