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more security checks

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This commit is contained in:
DrKLO 2013-12-25 02:25:13 +04:00
parent 4f9384afee
commit a65f5f9fee
3 changed files with 122 additions and 17 deletions
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12
TMessagesProj/src/main/java/org/telegram/messenger/ConnectionsManager.java
View File

@ -2343,6 +2343,18 @@ public class ConnectionsManager implements Action.ActionDelegate, TcpConnection.
set.add(messageId);
}
byte[] realMessageKeyFull = Utilities.computeSHA1(messageData, 0, Math.min(messageLength + 32, messageData.length));
if (realMessageKeyFull == null) {
return;
}
byte[] realMessageKey = new byte[16];
System.arraycopy(realMessageKeyFull, realMessageKeyFull.length - 16, realMessageKey, 0, 16);
if (!Arrays.equals(messageKey, realMessageKey)) {
FileLog.e("tmessages", "***** Error: invalid message key");
return;
}
if (!doNotProcess) {
int messageLength = messageIs.readInt32();

7
TMessagesProj/src/main/java/org/telegram/messenger/TcpConnection.java
View File

@ -131,6 +131,7 @@ public class TcpConnection extends PyroClientAdapter {
}
});
}
failedConnectionCount++;
if (failedConnectionCount == 1) {
if (hasSomeDataSinceLastConnect) {
@ -139,12 +140,14 @@ public class TcpConnection extends PyroClientAdapter {
willRetryConnectCount = 1;
}
}
if (ConnectionsManager.isNetworkOnline()) {
isNextPort = true;
if (failedConnectionCount > willRetryConnectCount) {
Datacenter datacenter = ConnectionsManager.Instance.datacenterWithId(datacenterId);
datacenter.nextAddressOrPort();
failedConnectionCount = 0;
}
}
FileLog.e("tmessages", e);
FileLog.d("tmessages", "Reconnect " + hostAddress + ":" + hostPort + " " + TcpConnection.this);
@ -410,8 +413,10 @@ public class TcpConnection extends PyroClientAdapter {
Utilities.stageQueue.postRunnable(new Runnable() {
@Override
public void run() {
if (delegate != null) {
delegate.tcpConnectionClosed(TcpConnection.this);
}
}
});
}
if (connectionState == TcpConnectionState.TcpConnectionStageIdle &&
@ -424,12 +429,14 @@ public class TcpConnection extends PyroClientAdapter {
willRetryConnectCount = 1;
}
}
if (ConnectionsManager.isNetworkOnline()) {
isNextPort = true;
if (failedConnectionCount > willRetryConnectCount) {
Datacenter datacenter = ConnectionsManager.Instance.datacenterWithId(datacenterId);
datacenter.nextAddressOrPort();
failedConnectionCount = 0;
}
}
FileLog.d("tmessages", "Reconnect " + hostAddress + ":" + hostPort + " " + TcpConnection.this);
try {
reconnectTimer = new Timer();

96
TMessagesProj/src/main/java/org/telegram/messenger/Utilities.java
View File

@ -12,6 +12,7 @@ import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.Typeface;
import android.net.Uri;
import android.os.Environment;
@ -20,6 +21,7 @@ import android.text.Html;
import android.text.SpannableStringBuilder;
import android.text.format.DateFormat;
import android.util.AttributeSet;
import android.util.Base64;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
@ -42,6 +44,7 @@ import java.security.MessageDigest;
import java.security.PublicKey;
import java.security.spec.RSAPublicKeySpec;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.Hashtable;
@ -55,9 +58,7 @@ public class Utilities {
public static int statusBarHeight = 0;
private final static Integer lock = 1;
public static String[] goodPrimes = {
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
};
public static ArrayList<String> goodPrimes = new ArrayList<String>();
public static class TPFactorizedValue {
public long p, q;
@ -73,6 +74,26 @@ public class Utilities {
public native static byte[] aesIgeEncryption(byte[] _what, byte[] _key, byte[] _iv, boolean encrypt, boolean changeIv);
static {
SharedPreferences preferences = ApplicationLoader.applicationContext.getSharedPreferences("primes", Context.MODE_PRIVATE);
String primes = preferences.getString("primes", null);
if (primes == null) {
goodPrimes.add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
} else {
try {
byte[] bytes = Base64.decode(primes, Base64.DEFAULT);
if (bytes != null) {
SerializedData data = new SerializedData(bytes);
int count = data.readInt32();
for (int a = 0; a < count; a++) {
goodPrimes.add(data.readString());
}
}
} catch (Exception e) {
FileLog.e("tmessages", e);
goodPrimes.clear();
goodPrimes.add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
}
}
System.loadLibrary("tmessages");
}
@ -104,6 +125,11 @@ public class Utilities {
if (!(g >= 2 && g <= 7)) {
return false;
}
if (prime.length != 256 || prime[0] >= 0) {
return false;
}
String hex = bytesToHex(prime);
for (String cached : goodPrimes) {
if (cached.equals(hex)) {
@ -111,16 +137,65 @@ public class Utilities {
}
}
if (prime.length != 256 || prime[0] >= 0) {
BigInteger dhBI = new BigInteger(1, prime);
if (g == 2) { // p mod 8 = 7 for g = 2;
BigInteger res = dhBI.mod(BigInteger.valueOf(8));
if (res.intValue() != 7) {
return false;
}
} else if (g == 3) { // p mod 3 = 2 for g = 3;
BigInteger res = dhBI.mod(BigInteger.valueOf(3));
if (res.intValue() != 2) {
return false;
}
} else if (g == 5) { // p mod 5 = 1 or 4 for g = 5;
BigInteger res = dhBI.mod(BigInteger.valueOf(5));
int val = res.intValue();
if (val != 1 && val != 4) {
return false;
}
} else if (g == 6) { // p mod 24 = 19 or 23 for g = 6;
BigInteger res = dhBI.mod(BigInteger.valueOf(24));
int val = res.intValue();
if (val != 19 && val != 23) {
return false;
}
} else if (g == 7) { // p mod 7 = 3, 5 or 6 for g = 7.
BigInteger res = dhBI.mod(BigInteger.valueOf(7));
int val = res.intValue();
if (val != 3 && val != 5 && val != 6) {
return false;
}
}
BigInteger dhBI = new BigInteger(1, prime);
BigInteger dhBI2 = dhBI.subtract(BigInteger.valueOf(1)).divide(BigInteger.valueOf(2));
if (!dhBI.isProbablePrime(30) || !dhBI2.isProbablePrime(30)) {
return false;
}
goodPrimes.add(hex);
globalQueue.postRunnable(new Runnable() {
@Override
public void run() {
try {
SerializedData data = new SerializedData();
data.writeInt32(goodPrimes.size());
for (String pr : goodPrimes) {
data.writeString(pr);
}
byte[] bytes = data.toByteArray();
SharedPreferences preferences = ApplicationLoader.applicationContext.getSharedPreferences("primes", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = preferences.edit();
editor.putString("primes", Base64.encodeToString(bytes, Base64.DEFAULT));
editor.commit();
} catch (Exception e) {
FileLog.e("tmessages", e);
}
}
});
return true;
}
@ -153,6 +228,17 @@ public class Utilities {
}
}
public static byte[] computeSHA1(byte[] convertme, int offset, int len) {
try {
MessageDigest md = MessageDigest.getInstance("SHA-1");
md.update(convertme, offset, len);
return md.digest();
} catch (Exception e) {
FileLog.e("tmessages", e);
}
return null;
}
public static byte[] computeSHA1(byte[] convertme) {
try {
MessageDigest md = MessageDigest.getInstance("SHA-1");