Initial checkin of AOSP Messaging app.

b/23110861

Change-Id: I9aa980d7569247d6b2ca78f5dcb4502e1eaadb8a

src/com/android/messaging/sms/BugleUserAgentInfoLoader.java

@@ -0,0 +1,96 @@
+/*
+ * 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.messaging.sms;
+
+import android.content.Context;
+import android.support.v7.mms.UserAgentInfoLoader;
+import android.telephony.TelephonyManager;
+import android.text.TextUtils;
+
+import com.android.messaging.util.BugleGservices;
+import com.android.messaging.util.BugleGservicesKeys;
+import com.android.messaging.util.LogUtil;
+import com.android.messaging.util.OsUtil;
+import com.android.messaging.util.VersionUtil;
+
+/**
+ * User agent and UA profile URL loader
+ */
+public class BugleUserAgentInfoLoader implements UserAgentInfoLoader {
+    private static final String DEFAULT_USER_AGENT_PREFIX = "Bugle/";
+
+    private Context mContext;
+    private boolean mLoaded;
+
+    private String mUserAgent;
+    private String mUAProfUrl;
+
+    public BugleUserAgentInfoLoader(final Context context) {
+        mContext = context;
+    }
+
+    @Override
+    public String getUserAgent() {
+        load();
+        return mUserAgent;
+    }
+
+    @Override
+    public String getUAProfUrl() {
+        load();
+        return mUAProfUrl;
+    }
+
+    private void load() {
+        if (mLoaded) {
+            return;
+        }
+        boolean didLoad = false;
+        synchronized (this) {
+            if (!mLoaded) {
+                loadLocked();
+                mLoaded = true;
+                didLoad = true;
+            }
+        }
+        if (didLoad) {
+            LogUtil.i(LogUtil.BUGLE_TAG, "Loaded user agent info: "
+                    + "UA=" + mUserAgent + ", UAProfUrl=" + mUAProfUrl);
+        }
+    }
+
+    private void loadLocked() {
+        if (OsUtil.isAtLeastKLP()) {
+            // load the MMS User agent and UaProfUrl from TelephonyManager APIs
+            final TelephonyManager telephonyManager = (TelephonyManager) mContext.getSystemService(
+                    Context.TELEPHONY_SERVICE);
+            mUserAgent = telephonyManager.getMmsUserAgent();
+            mUAProfUrl = telephonyManager.getMmsUAProfUrl();
+        }
+        // if user agent string isn't set, use the format "Bugle/<app_version>".
+        if (TextUtils.isEmpty(mUserAgent)) {
+            final String simpleVersionName = VersionUtil.getInstance(mContext).getSimpleName();
+            mUserAgent = DEFAULT_USER_AGENT_PREFIX + simpleVersionName;
+        }
+        // if the UAProfUrl isn't set, get it from Gservices
+        if (TextUtils.isEmpty(mUAProfUrl)) {
+            mUAProfUrl = BugleGservices.get().getString(
+                    BugleGservicesKeys.MMS_UA_PROFILE_URL,
+                    BugleGservicesKeys.MMS_UA_PROFILE_URL_DEFAULT);
+        }
+    }
+}