Temporary revert to fix an avatar retrieval issue.

This reverts commit 8aa185070b.

build.gradle

@@ -85,9 +85,7 @@ dependencies {
     compile 'com.google.android.exoplayer:exoplayer-core:2.9.1'
     compile 'com.google.android.exoplayer:exoplayer-ui:2.9.1'
 
-    compile 'org.conscrypt:conscrypt-android:2.0.0'
-
-    compile 'org.whispersystems:signal-service-android:2.13.0'
+    compile 'org.whispersystems:signal-service-android:2.12.8'
     compile 'org.whispersystems:webrtc-android:M73-S1'
 
     compile "me.leolin:ShortcutBadger:1.1.16"
@@ -188,8 +186,7 @@ dependencyVerification {
         'com.google.android.gms:play-services-auth:aec9e1c584d442cb9f59481a50b2c66dc191872607c04d97ecb82dd0eb5149ec',
         'com.google.android.exoplayer:exoplayer-ui:7a942afcc402ff01e9bf48e8d3942850986710f06562d50a1408aaf04a683151',
         'com.google.android.exoplayer:exoplayer-core:b6ab34abac36bc2bc6934b7a50008162feca2c0fde91aaf1e8c1c22f2c16e2c0',
-        'org.conscrypt:conscrypt-android:400ca559a49b860a82862b22cee0e3110764bdcf7ee7c79e7479895c25cdfc09',
-        'org.whispersystems:signal-service-android:2268f5c13d74a9b8fc582e71f0e5b3041659b4d2597e4e3c47b410dd4ef7c1dc',
+        'org.whispersystems:signal-service-android:68a349a9e05089f33ab5a9b9fc330526f59d31e8385ff9f5b70bc4a88bd0e297',
         'org.whispersystems:webrtc-android:1ae3716728f2581724f982f5b4ded92d7aa33edf19d0daa35529d9529f8eb3a2',
         'me.leolin:ShortcutBadger:e3cb3e7625892129b0c92dd5e4bc649faffdd526d5af26d9c45ee31ff8851774',
         'se.emilsjolander:stickylistheaders:a08ca948aa6b220f09d82f16bbbac395f6b78897e9eeac6a9f0b0ba755928eeb',
@@ -262,7 +259,7 @@ dependencyVerification {
         'com.android.support.constraint:constraint-layout-solver:2cafbe356f71c208013d021f32943904798cd6459e5107f9fe27000eb5bc2aef',
         'com.google.guava:listenablefuture:e4ad7607e5c0477c6f890ef26a49cb8d1bb4dffb650bab4502afee64644e3069',
         'org.signal:signal-metadata-android:d9d798aab7ee7200373ecff8718baf8aaeb632c123604e8a41b7b4c0c97eeee1',
-        'org.whispersystems:signal-service-java:0af556834936d6fa06c6cb9ec58a3049320475df1e7882aef24f3488d967e154',
+        'org.whispersystems:signal-service-java:fde1a008fe42ebbf1cd35018b363135cd8fec9e690304f8917b5ffb7080fa2a5',
         'com.github.bumptech.glide:disklrucache:c1b1b6f5bbd01e2fcdc9d7f60913c8d338bdb65ed4a93bfa02b56f19daaade4b',
         'com.github.bumptech.glide:annotations:bede99ef9f71517a4274bac18fd3e483e9f2b6108d7d6fe8f4949be4aa4d9512',
         'com.nineoldandroids:library:68025a14e3e7673d6ad2f95e4b46d78d7d068343aa99256b686fe59de1b3163a',
@@ -274,19 +271,21 @@ dependencyVerification {
         'org.signal:signal-metadata-java:af1d0dd766b1e301ed1c44e65161084cf03e2587fe97fdd29ecbea58c6aa6930',
         'org.whispersystems:signal-protocol-java:b08207f7e1847228f2a1f0d49e113f93c96c6ed8490be14edddd4be55b2a4a4e',
         'com.google.protobuf:protobuf-java:e0c1c64575c005601725e7c6a02cebf9e1285e888f756b2a1d73ffa8d725cc74',
-        'com.googlecode.libphonenumber:libphonenumber:dbf4bf566d17a60044c19e282a619684e4b4abb0f9f9f24f843c55d19826ab5e',
-        'com.fasterxml.jackson.core:jackson-databind:2351c3eba73a545db9079f5d6d768347ad72666537362c8220fe3e950a55a864',
-        'com.squareup.okhttp3:okhttp:07c3d82ca7eaf4722f00b2da807dc7860f6169ae60cfedcf5d40218f90880a46',
+        'com.googlecode.libphonenumber:libphonenumber:183392c0565be16d3f6f86680b4106bbde6fe31a402ad21bf9823d938c0c8706',
+        'com.fasterxml.jackson.core:jackson-databind:0fb4e079c118e752cc94c15ad22e6782b0dfc5dc09145f4813fb39d82e686047',
+        'com.squareup.okhttp3:okhttp:7265adbd6f028aade307f58569d814835cd02bc9beffb70c25f72c9de50d61c4',
+        'com.madgag.spongycastle:pkix:0d9cca6991f68eb373cfad309d5268c9fc38db5efb5fe00dcccf5c973af1eca1',
+        'com.madgag.spongycastle:prov:b8c3fec3a59aac1aa04ccf4dad7179351e54ef7672f53f508151b614c131398a',
         'org.threeten:threetenbp:f4c23ffaaed717c3b99c003e0ee02d6d66377fd47d866fec7d971bd8644fc1a7',
         'org.whispersystems:curve25519-android:82595394422b957d4a5b5f1b27b75ba25cf6dc4db4d312418ca38cd6fff279ca',
         'com.fasterxml.jackson.core:jackson-annotations:45d32ac61ef8a744b464c54c2b3414be571016dd46bfc2bec226761cf7ae457a',
-        'com.fasterxml.jackson.core:jackson-core:d934dab0bd48994eeea2c1b493cb547158a338a80b58c4fbc8e85fb0905e105f',
-        'com.squareup.okio:okio:693fa319a7e8843300602b204023b7674f106ebcb577f2dd5807212b66118bd2',
+        'com.fasterxml.jackson.core:jackson-core:a2bebaa325ad25455b02149c67e6052367a7d7fc1ce77de000eed284a5214eac',
+        'com.squareup.okio:okio:734269c3ebc5090e3b23566db558f421f0b4027277c79ad5d176b8ec168bb850',
+        'com.madgag.spongycastle:core:8d6240b974b0aca4d3da9c7dd44d42339d8a374358aca5fc98e50a995764511f',
         'org.whispersystems:curve25519-java:7dd659d8822c06c3aea1a47f18fac9e5761e29cab8100030b877db445005f03e',
     ]
 }
 
-
 android {
     flavorDimensions "none"
     compileSdkVersion 28

proguard-spongycastle.pro

@@ -0,0 +1,26 @@
+-keep class org.spongycastle.crypto.* {*;}
+-keep class org.spongycastle.crypto.agreement.** {*;}
+-keep class org.spongycastle.crypto.digests.* {*;}
+-keep class org.spongycastle.crypto.ec.* {*;}
+-keep class org.spongycastle.crypto.encodings.* {*;}
+-keep class org.spongycastle.crypto.engines.* {*;}
+-keep class org.spongycastle.crypto.macs.* {*;}
+-keep class org.spongycastle.crypto.modes.* {*;}
+-keep class org.spongycastle.crypto.paddings.* {*;}
+-keep class org.spongycastle.crypto.params.* {*;}
+-keep class org.spongycastle.crypto.prng.* {*;}
+-keep class org.spongycastle.crypto.signers.* {*;}
+
+-keep class org.spongycastle.jcajce.provider.asymmetric.* {*;}
+-keep class org.spongycastle.jcajce.provider.asymmetric.util.* {*;}
+-keep class org.spongycastle.jcajce.provider.asymmetric.dh.* {*;}
+-keep class org.spongycastle.jcajce.provider.asymmetric.ec.* {*;}
+
+-keep class org.spongycastle.jcajce.provider.digest.** {*;}
+-keep class org.spongycastle.jcajce.provider.keystore.** {*;}
+-keep class org.spongycastle.jcajce.provider.symmetric.** {*;}
+-keep class org.spongycastle.jcajce.spec.* {*;}
+-keep class org.spongycastle.jce.** {*;}
+
+
+-dontwarn javax.naming.**

src/org/thoughtcrime/securesms/ApplicationContext.java

@@ -28,9 +28,11 @@ import android.support.multidex.MultiDexApplication;
 
 import com.google.android.gms.security.ProviderInstaller;
 
-import org.conscrypt.Conscrypt;
 import org.thoughtcrime.securesms.components.TypingStatusRepository;
 import org.thoughtcrime.securesms.components.TypingStatusSender;
+import org.thoughtcrime.securesms.crypto.PRNGFixes;
+import org.thoughtcrime.securesms.database.DatabaseFactory;
+import org.thoughtcrime.securesms.database.helpers.SQLCipherOpenHelper;
 import org.thoughtcrime.securesms.dependencies.AxolotlStorageModule;
 import org.thoughtcrime.securesms.dependencies.InjectableType;
 import org.thoughtcrime.securesms.dependencies.SignalCommunicationModule;
@@ -65,7 +67,6 @@ import org.webrtc.voiceengine.WebRtcAudioManager;
 import org.webrtc.voiceengine.WebRtcAudioUtils;
 import org.whispersystems.libsignal.logging.SignalProtocolLoggerProvider;
 
-import java.security.Security;
 import java.util.HashSet;
 import java.util.Set;
 import java.util.concurrent.TimeUnit;
@@ -104,7 +105,7 @@ public class ApplicationContext extends MultiDexApplication implements Dependenc
   public void onCreate() {
     super.onCreate();
     Log.i(TAG, "onCreate()");
-    initializeSecurityProvider();
+    initializeRandomNumberFix();
     initializeLogging();
     initializeCrashHandling();
     initializeDependencyInjection();
@@ -171,8 +172,8 @@ public class ApplicationContext extends MultiDexApplication implements Dependenc
     return persistentLogger;
   }
 
-  private void initializeSecurityProvider() {
-    Security.insertProviderAt(Conscrypt.newProvider(), 1);
+  private void initializeRandomNumberFix() {
+    PRNGFixes.apply();
   }
 
   private void initializeLogging() {

src/org/thoughtcrime/securesms/attachments/AttachmentServer.java

@@ -4,10 +4,10 @@ package org.thoughtcrime.securesms.attachments;
 import android.content.Context;
 import android.net.Uri;
 import android.support.annotation.NonNull;
-
 import org.thoughtcrime.securesms.logging.Log;
+
+import org.spongycastle.util.encoders.Hex;
 import org.thoughtcrime.securesms.mms.PartAuthority;
-import org.thoughtcrime.securesms.util.Hex;
 import org.thoughtcrime.securesms.util.Util;
 
 import java.io.BufferedOutputStream;
@@ -52,7 +52,7 @@ public class AttachmentServer implements Runnable {
       this.attachment   = attachment;
       this.socket       = new ServerSocket(0, 0, InetAddress.getByAddress(new byte[]{127, 0, 0, 1}));
       this.port         = socket.getLocalPort();
-      this.auth         = Hex.toStringCondensed(Util.getSecretBytes(16));
+      this.auth         = new String(Hex.encode(Util.getSecretBytes(16)));
 
       this.socket.setSoTimeout(5000);
     } catch (UnknownHostException e) {

src/org/thoughtcrime/securesms/crypto/PRNGFixes.java

@@ -0,0 +1,346 @@
+/*
+ * This software is provided 'as-is', without any express or implied
+ * warranty.  In no event will Google be held liable for any damages
+ * arising from the use of this software.
+ *
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, as long as the origin is not misrepresented.
+ */
+
+package org.thoughtcrime.securesms.crypto;
+
+import android.os.Build;
+import android.os.Process;
+import org.thoughtcrime.securesms.logging.Log;
+
+import java.io.ByteArrayOutputStream;
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.UnsupportedEncodingException;
+import java.security.NoSuchAlgorithmException;
+import java.security.Provider;
+import java.security.SecureRandom;
+import java.security.SecureRandomSpi;
+import java.security.Security;
+
+/**
+ * This class is taken directly from the Android blog post announcing this bug:
+ * http://android-developers.blogspot.com/2013/08/some-securerandom-thoughts.html
+ *
+ * Since I still don't know exactly what the source of this bug was, I'm using
+ * this class verbatim under the assumption that the Android team knows what
+ * they're doing.  Although, at this point, that is perhaps a foolish assumption.
+ */
+
+/**
+ * Fixes for the output of the default PRNG having low entropy.
+ *
+ * The fixes need to be applied via {@link #apply()} before any use of Java
+ * Cryptography Architecture primitives. A good place to invoke them is in the
+ * application's {@code onCreate}.
+ */
+public final class PRNGFixes {
+
+  private static final String TAG = PRNGFixes.class.getSimpleName();
+
+  private static final int VERSION_CODE_JELLY_BEAN = 16;
+  private static final int VERSION_CODE_JELLY_BEAN_MR2 = 18;
+  private static final byte[] BUILD_FINGERPRINT_AND_DEVICE_SERIAL =
+      getBuildFingerprintAndDeviceSerial();
+
+  /** Hidden constructor to prevent instantiation. */
+  private PRNGFixes() {}
+
+  /**
+   * Applies all fixes.
+   *
+   * @throws SecurityException if a fix is needed but could not be applied.
+   */
+  public static void apply() {
+    applyOpenSSLFix();
+    installLinuxPRNGSecureRandom();
+  }
+
+  /**
+   * Applies the fix for OpenSSL PRNG having low entropy. Does nothing if the
+   * fix is not needed.
+   *
+   * @throws SecurityException if the fix is needed but could not be applied.
+   */
+  private static void applyOpenSSLFix() throws SecurityException {
+    if ((Build.VERSION.SDK_INT < VERSION_CODE_JELLY_BEAN)
+        || (Build.VERSION.SDK_INT > VERSION_CODE_JELLY_BEAN_MR2)) {
+      // No need to apply the fix
+      return;
+    }
+
+    try {
+      // Mix in the device- and invocation-specific seed.
+      Class.forName("org.apache.harmony.xnet.provider.jsse.NativeCrypto")
+           .getMethod("RAND_seed", byte[].class)
+           .invoke(null, generateSeed());
+
+      // Mix output of Linux PRNG into OpenSSL's PRNG
+      int bytesRead = (Integer) Class.forName(
+          "org.apache.harmony.xnet.provider.jsse.NativeCrypto")
+                                     .getMethod("RAND_load_file", String.class, long.class)
+                                     .invoke(null, "/dev/urandom", 1024);
+      if (bytesRead != 1024) {
+        throw new IOException(
+            "Unexpected number of bytes read from Linux PRNG: "
+                + bytesRead);
+      }
+    } catch (Exception e) {
+      throw new SecurityException("Failed to seed OpenSSL PRNG", e);
+    }
+  }
+
+  /**
+   * Installs a Linux PRNG-backed {@code SecureRandom} implementation as the
+   * default. Does nothing if the implementation is already the default or if
+   * there is not need to install the implementation.
+   *
+   * @throws SecurityException if the fix is needed but could not be applied.
+   */
+  private static void installLinuxPRNGSecureRandom()
+      throws SecurityException {
+    if (Build.VERSION.SDK_INT > VERSION_CODE_JELLY_BEAN_MR2) {
+      // No need to apply the fix
+      return;
+    }
+
+    // Install a Linux PRNG-based SecureRandom implementation as the
+    // default, if not yet installed.
+    Provider[] secureRandomProviders =
+        Security.getProviders("SecureRandom.SHA1PRNG");
+    if ((secureRandomProviders == null)
+        || (secureRandomProviders.length < 1)
+        || (!LinuxPRNGSecureRandomProvider.class.equals(
+        secureRandomProviders[0].getClass()))) {
+      Security.insertProviderAt(new LinuxPRNGSecureRandomProvider(), 1);
+    }
+
+    // Assert that new SecureRandom() and
+    // SecureRandom.getInstance("SHA1PRNG") return a SecureRandom backed
+    // by the Linux PRNG-based SecureRandom implementation.
+    SecureRandom rng1 = new SecureRandom();
+    if (!LinuxPRNGSecureRandomProvider.class.equals(
+        rng1.getProvider().getClass())) {
+      throw new SecurityException(
+          "new SecureRandom() backed by wrong Provider: "
+              + rng1.getProvider().getClass());
+    }
+
+    SecureRandom rng2;
+    try {
+      rng2 = SecureRandom.getInstance("SHA1PRNG");
+    } catch (NoSuchAlgorithmException e) {
+      throw new SecurityException("SHA1PRNG not available", e);
+    }
+    if (!LinuxPRNGSecureRandomProvider.class.equals(
+        rng2.getProvider().getClass())) {
+      throw new SecurityException(
+          "SecureRandom.getInstance(\"SHA1PRNG\") backed by wrong"
+              + " Provider: " + rng2.getProvider().getClass());
+    }
+  }
+
+  /**
+   * {@code Provider} of {@code SecureRandom} engines which pass through
+   * all requests to the Linux PRNG.
+   */
+  private static class LinuxPRNGSecureRandomProvider extends Provider {
+
+    public LinuxPRNGSecureRandomProvider() {
+      super("LinuxPRNG",
+            1.0,
+            "A Linux-specific random number provider that uses"
+                + " /dev/urandom");
+      // Although /dev/urandom is not a SHA-1 PRNG, some apps
+      // explicitly request a SHA1PRNG SecureRandom and we thus need to
+      // prevent them from getting the default implementation whose output
+      // may have low entropy.
+      put("SecureRandom.SHA1PRNG", LinuxPRNGSecureRandom.class.getName());
+      put("SecureRandom.SHA1PRNG ImplementedIn", "Software");
+    }
+  }
+
+  /**
+   * {@link SecureRandomSpi} which passes all requests to the Linux PRNG
+   * ({@code /dev/urandom}).
+   */
+  public static class LinuxPRNGSecureRandom extends SecureRandomSpi {
+
+        /*
+         * IMPLEMENTATION NOTE: Requests to generate bytes and to mix in a seed
+         * are passed through to the Linux PRNG (/dev/urandom). Instances of
+         * this class seed themselves by mixing in the current time, PID, UID,
+         * build fingerprint, and hardware serial number (where available) into
+         * Linux PRNG.
+         *
+         * Concurrency: Read requests to the underlying Linux PRNG are
+         * serialized (on sLock) to ensure that multiple threads do not get
+         * duplicated PRNG output.
+         */
+
+    private static final File URANDOM_FILE = new File("/dev/urandom");
+
+    private static final Object sLock = new Object();
+
+    /**
+     * Input stream for reading from Linux PRNG or {@code null} if not yet
+     * opened.
+     *
+     * @GuardedBy("sLock")
+     */
+    private static DataInputStream sUrandomIn;
+
+    /**
+     * Output stream for writing to Linux PRNG or {@code null} if not yet
+     * opened.
+     *
+     * @GuardedBy("sLock")
+     */
+    private static OutputStream sUrandomOut;
+
+    /**
+     * Whether this engine instance has been seeded. This is needed because
+     * each instance needs to seed itself if the client does not explicitly
+     * seed it.
+     */
+    private boolean mSeeded;
+
+    @Override
+    protected void engineSetSeed(byte[] bytes) {
+      try {
+        OutputStream out;
+        synchronized (sLock) {
+          out = getUrandomOutputStream();
+        }
+        out.write(bytes);
+        out.flush();
+      } catch (IOException e) {
+        // On a small fraction of devices /dev/urandom is not writable.
+        // Log and ignore.
+        Log.w(TAG, "Failed to mix seed into " + URANDOM_FILE);
+      } finally {
+        mSeeded = true;
+      }
+    }
+
+    @Override
+    protected void engineNextBytes(byte[] bytes) {
+      if (!mSeeded) {
+        // Mix in the device- and invocation-specific seed.
+        engineSetSeed(generateSeed());
+      }
+
+      try {
+        DataInputStream in;
+        synchronized (sLock) {
+          in = getUrandomInputStream();
+        }
+        synchronized (in) {
+          in.readFully(bytes);
+        }
+      } catch (IOException e) {
+        throw new SecurityException(
+            "Failed to read from " + URANDOM_FILE, e);
+      }
+    }
+
+    @Override
+    protected byte[] engineGenerateSeed(int size) {
+      byte[] seed = new byte[size];
+      engineNextBytes(seed);
+      return seed;
+    }
+
+    private DataInputStream getUrandomInputStream() {
+      synchronized (sLock) {
+        if (sUrandomIn == null) {
+          // NOTE: Consider inserting a BufferedInputStream between
+          // DataInputStream and FileInputStream if you need higher
+          // PRNG output performance and can live with future PRNG
+          // output being pulled into this process prematurely.
+          try {
+            sUrandomIn = new DataInputStream(
+                new FileInputStream(URANDOM_FILE));
+          } catch (IOException e) {
+            throw new SecurityException("Failed to open "
+                                            + URANDOM_FILE + " for reading", e);
+          }
+        }
+        return sUrandomIn;
+      }
+    }
+
+    private OutputStream getUrandomOutputStream() throws IOException {
+      synchronized (sLock) {
+        if (sUrandomOut == null) {
+          sUrandomOut = new FileOutputStream(URANDOM_FILE);
+        }
+        return sUrandomOut;
+      }
+    }
+  }
+
+  /**
+   * Generates a device- and invocation-specific seed to be mixed into the
+   * Linux PRNG.
+   */
+  private static byte[] generateSeed() {
+    try {
+      ByteArrayOutputStream seedBuffer = new ByteArrayOutputStream();
+      DataOutputStream seedBufferOut =
+          new DataOutputStream(seedBuffer);
+      seedBufferOut.writeLong(System.currentTimeMillis());
+      seedBufferOut.writeLong(System.nanoTime());
+      seedBufferOut.writeInt(Process.myPid());
+      seedBufferOut.writeInt(Process.myUid());
+      seedBufferOut.write(BUILD_FINGERPRINT_AND_DEVICE_SERIAL);
+      seedBufferOut.close();
+      return seedBuffer.toByteArray();
+    } catch (IOException e) {
+      throw new SecurityException("Failed to generate seed", e);
+    }
+  }
+
+  /**
+   * Gets the hardware serial number of this device.
+   *
+   * @return serial number or {@code null} if not available.
+   */
+  private static String getDeviceSerialNumber() {
+    // We're using the Reflection API because Build.SERIAL is only available
+    // since API Level 9 (Gingerbread, Android 2.3).
+    try {
+      return (String) Build.class.getField("SERIAL").get(null);
+    } catch (Exception ignored) {
+      return null;
+    }
+  }
+
+  private static byte[] getBuildFingerprintAndDeviceSerial() {
+    StringBuilder result = new StringBuilder();
+    String fingerprint = Build.FINGERPRINT;
+    if (fingerprint != null) {
+      result.append(fingerprint);
+    }
+    String serial = getDeviceSerialNumber();
+    if (serial != null) {
+      result.append(serial);
+    }
+    try {
+      return result.toString().getBytes("UTF-8");
+    } catch (UnsupportedEncodingException e) {
+      throw new RuntimeException("UTF-8 encoding not supported");
+    }
+  }
+}

src/org/thoughtcrime/securesms/jobs/RetrieveProfileJob.java

@@ -25,7 +25,6 @@ import org.whispersystems.libsignal.InvalidKeyException;
 import org.whispersystems.libsignal.util.guava.Optional;
 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
-import org.whispersystems.signalservice.api.crypto.InvalidCiphertextException;
 import org.whispersystems.signalservice.api.crypto.ProfileCipher;
 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccess;
 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccessPair;
@@ -211,7 +210,7 @@ public class RetrieveProfileJob extends ContextJob implements InjectableType {
       if (!Util.equals(plaintextProfileName, recipient.getProfileName())) {
         DatabaseFactory.getRecipientDatabase(context).setProfileName(recipient, plaintextProfileName);
       }
-    } catch (InvalidCiphertextException | IOException e) {
+    } catch (ProfileCipher.InvalidCiphertextException | IOException e) {
       Log.w(TAG, e);
     }
   }