1 files changed, 218 insertions, 0 deletions
diff --git a/java/com/android/voicemail/impl/fetch/FetchVoicemailReceiver.java b/java/com/android/voicemail/impl/fetch/FetchVoicemailReceiver.java
new file mode 100644
index 000000000..07e800836
--- /dev/null
+++ b/java/com/android/voicemail/impl/fetch/FetchVoicemailReceiver.java
@@ -0,0 +1,218 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License
+ */
+package com.android.voicemail.impl.fetch;
+
+import android.annotation.TargetApi;
+import android.content.BroadcastReceiver;
+import android.content.ComponentName;
+import android.content.ContentResolver;
+import android.content.Context;
+import android.content.Intent;
+import android.database.Cursor;
+import android.net.Network;
+import android.net.Uri;
+import android.os.Build.VERSION_CODES;
+import android.provider.VoicemailContract;
+import android.provider.VoicemailContract.Voicemails;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.support.v4.os.BuildCompat;
+import android.telecom.PhoneAccountHandle;
+import android.telecom.TelecomManager;
+import android.telephony.TelephonyManager;
+import android.text.TextUtils;
+import com.android.voicemail.impl.VoicemailStatus;
+import com.android.voicemail.impl.VvmLog;
+import com.android.voicemail.impl.imap.ImapHelper;
+import com.android.voicemail.impl.imap.ImapHelper.InitializingException;
+import com.android.voicemail.impl.sync.VvmAccountManager;
+import com.android.voicemail.impl.sync.VvmNetworkRequestCallback;
+import java.util.concurrent.Executor;
+import java.util.concurrent.Executors;
+
+/** handles {@link VoicemailContract#ACTION_FETCH_VOICEMAIL} */
+@TargetApi(VERSION_CODES.O)
+public class FetchVoicemailReceiver extends BroadcastReceiver {
+
+  private static final String TAG = "FetchVoicemailReceiver";
+
+  static final String[] PROJECTION =
+      new String[] {
+        Voicemails.SOURCE_DATA, // 0
+        Voicemails.PHONE_ACCOUNT_ID, // 1
+        Voicemails.PHONE_ACCOUNT_COMPONENT_NAME, // 2
+      };
+
+  public static final int SOURCE_DATA = 0;
+  public static final int PHONE_ACCOUNT_ID = 1;
+  public static final int PHONE_ACCOUNT_COMPONENT_NAME = 2;
+
+  // Number of retries
+  private static final int NETWORK_RETRY_COUNT = 3;
+
+  private ContentResolver mContentResolver;
+  private Uri mUri;
+  private VvmNetworkRequestCallback mNetworkCallback;
+  private Context mContext;
+  private String mUid;
+  private PhoneAccountHandle mPhoneAccount;
+  private int mRetryCount = NETWORK_RETRY_COUNT;
+
+  @Override
+  public void onReceive(final Context context, Intent intent) {
+    if (VoicemailContract.ACTION_FETCH_VOICEMAIL.equals(intent.getAction())) {
+      VvmLog.i(TAG, "ACTION_FETCH_VOICEMAIL received");
+      mContext = context;
+      mContentResolver = context.getContentResolver();
+      mUri = intent.getData();
+
+      if (mUri == null) {
+        VvmLog.w(TAG, VoicemailContract.ACTION_FETCH_VOICEMAIL + " intent sent with no data");
+        return;
+      }
+
+      if (!context
+          .getPackageName()
+          .equals(mUri.getQueryParameter(VoicemailContract.PARAM_KEY_SOURCE_PACKAGE))) {
+        // Ignore if the fetch request is for a voicemail not from this package.
+        VvmLog.e(TAG, "ACTION_FETCH_VOICEMAIL from foreign pacakge " + context.getPackageName());
+        return;
+      }
+
+      Cursor cursor = mContentResolver.query(mUri, PROJECTION, null, null, null);
+      if (cursor == null) {
+        VvmLog.i(TAG, "ACTION_FETCH_VOICEMAIL query returned null");
+        return;
+      }
+      try {
+        if (cursor.moveToFirst()) {
+          mUid = cursor.getString(SOURCE_DATA);
+          String accountId = cursor.getString(PHONE_ACCOUNT_ID);
+          if (TextUtils.isEmpty(accountId)) {
+            TelephonyManager telephonyManager =
+                (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
+            accountId = telephonyManager.getSimSerialNumber();
+
+            if (TextUtils.isEmpty(accountId)) {
+              VvmLog.e(TAG, "Account null and no default sim found.");
+              return;
+            }
+          }
+
+          mPhoneAccount =
+              new PhoneAccountHandle(
+                  ComponentName.unflattenFromString(cursor.getString(PHONE_ACCOUNT_COMPONENT_NAME)),
+                  cursor.getString(PHONE_ACCOUNT_ID));
+          if (!VvmAccountManager.isAccountActivated(context, mPhoneAccount)) {
+            mPhoneAccount = getAccountFromMarshmallowAccount(context, mPhoneAccount);
+            if (mPhoneAccount == null) {
+              VvmLog.w(TAG, "Account not registered - cannot retrieve message.");
+              return;
+            }
+            VvmLog.i(TAG, "Fetching voicemail with Marshmallow PhoneAccountHandle");
+          }
+          VvmLog.i(TAG, "Requesting network to fetch voicemail");
+          mNetworkCallback = new fetchVoicemailNetworkRequestCallback(context, mPhoneAccount);
+          mNetworkCallback.requestNetwork();
+        }
+      } finally {
+        cursor.close();
+      }
+    }
+  }
+
+  /**
+   * In ag/930496 the format of PhoneAccountHandle has changed between Marshmallow and Nougat. This
+   * method attempts to search the account from the old database in registered sources using the old
+   * format. There's a chance of M phone account collisions on multi-SIM devices, but visual
+   * voicemail is not supported on M multi-SIM.
+   */
+  @Nullable
+  private static PhoneAccountHandle getAccountFromMarshmallowAccount(
+      Context context, PhoneAccountHandle oldAccount) {
+    if (!BuildCompat.isAtLeastN()) {
+      return null;
+    }
+    for (PhoneAccountHandle handle :
+        context.getSystemService(TelecomManager.class).getCallCapablePhoneAccounts()) {
+      if (getIccSerialNumberFromFullIccSerialNumber(handle.getId()).equals(oldAccount.getId())) {
+        return handle;
+      }
+    }
+    return null;
+  }
+
+  /**
+   * getIccSerialNumber() is used for ID before N, and getFullIccSerialNumber() after.
+   * getIccSerialNumber() stops at the first hex char.
+   */
+  @NonNull
+  private static String getIccSerialNumberFromFullIccSerialNumber(@NonNull String id) {
+    for (int i = 0; i < id.length(); i++) {
+      if (!Character.isDigit(id.charAt(i))) {
+        return id.substring(0, i);
+      }
+    }
+    return id;
+  }
+
+  private class fetchVoicemailNetworkRequestCallback extends VvmNetworkRequestCallback {
+
+    public fetchVoicemailNetworkRequestCallback(Context context, PhoneAccountHandle phoneAccount) {
+      super(context, phoneAccount, VoicemailStatus.edit(context, phoneAccount));
+    }
+
+    @Override
+    public void onAvailable(final Network network) {
+      super.onAvailable(network);
+      fetchVoicemail(network, getVoicemailStatusEditor());
+    }
+  }
+
+  private void fetchVoicemail(final Network network, final VoicemailStatus.Editor status) {
+    Executor executor = Executors.newCachedThreadPool();
+    executor.execute(
+        new Runnable() {
+          @Override
+          public void run() {
+            try {
+              while (mRetryCount > 0) {
+                VvmLog.i(TAG, "fetching voicemail, retry count=" + mRetryCount);
+                try (ImapHelper imapHelper =
+                    new ImapHelper(mContext, mPhoneAccount, network, status)) {
+                  boolean success =
+                      imapHelper.fetchVoicemailPayload(
+                          new VoicemailFetchedCallback(mContext, mUri, mPhoneAccount), mUid);
+                  if (!success && mRetryCount > 0) {
+                    VvmLog.i(TAG, "fetch voicemail failed, retrying");
+                    mRetryCount--;
+                  } else {
+                    return;
+                  }
+                } catch (InitializingException e) {
+                  VvmLog.w(TAG, "Can't retrieve Imap credentials ", e);
+                  return;
+                }
+              }
+            } finally {
+              if (mNetworkCallback != null) {
+                mNetworkCallback.releaseNetwork();
+              }
+            }
+          }
+        });
+  }
+}