1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.support.v7.mms;
18
19import android.app.PendingIntent;
20import android.content.ContentResolver;
21import android.content.Context;
22import android.content.Intent;
23import android.net.Uri;
24import android.os.Bundle;
25import android.os.Parcel;
26import android.os.ParcelFileDescriptor;
27import android.os.Parcelable;
28import android.text.TextUtils;
29import android.util.Log;
30
31import java.io.IOException;
32import java.util.concurrent.Callable;
33import java.util.concurrent.Future;
34import java.util.concurrent.TimeUnit;
35
36/**
37 * Request to download an MMS
38 */
39class DownloadRequest extends MmsRequest {
40
41    DownloadRequest(final String locationUrl, final Uri pduUri,
42            final PendingIntent sentIntent) {
43        super(locationUrl, pduUri, sentIntent);
44    }
45
46    @Override
47    protected boolean loadRequest(final Context context, final Bundle mmsConfig) {
48        // No need to load PDU from app. Always true.
49        return true;
50    }
51
52    @Override
53    protected boolean transferResponse(Context context, Intent fillIn, byte[] response) {
54        return writePduToContentUri(context, mPduUri, response);
55    }
56
57    @Override
58    protected byte[] doHttp(Context context, MmsNetworkManager netMgr, ApnSettingsLoader.Apn apn,
59            Bundle mmsConfig, String userAgent, String uaProfUrl) throws MmsHttpException {
60        final MmsHttpClient httpClient = netMgr.getHttpClient();
61        return httpClient.execute(getHttpRequestUrl(apn), null/*pdu*/, MmsHttpClient.METHOD_GET,
62                !TextUtils.isEmpty(apn.getMmsProxy()), apn.getMmsProxy(), apn.getMmsProxyPort(),
63                mmsConfig, userAgent, uaProfUrl);
64
65    }
66
67    @Override
68    protected String getHttpRequestUrl(final ApnSettingsLoader.Apn apn) {
69        return mLocationUrl;
70    }
71
72    /**
73     * Write pdu bytes to content provider uri
74     *
75     * @param contentUri content provider uri to which bytes should be written
76     * @param pdu Bytes to write
77     * @return true if all bytes successfully written else false
78     */
79    public boolean writePduToContentUri(final Context context, final Uri contentUri,
80            final byte[] pdu) {
81        if (contentUri == null || pdu == null) {
82            return false;
83        }
84        final Callable<Boolean> copyDownloadedPduToOutput = new Callable<Boolean>() {
85            public Boolean call() {
86                ParcelFileDescriptor.AutoCloseOutputStream outStream = null;
87                try {
88                    final ContentResolver cr = context.getContentResolver();
89                    final ParcelFileDescriptor pduFd = cr.openFileDescriptor(contentUri, "w");
90                    outStream = new ParcelFileDescriptor.AutoCloseOutputStream(pduFd);
91                    outStream.write(pdu);
92                    return true;
93                } catch (IOException e) {
94                    Log.e(MmsService.TAG, "Writing PDU to downloader: IO exception", e);
95                    return false;
96                } finally {
97                    if (outStream != null) {
98                        try {
99                            outStream.close();
100                        } catch (IOException ex) {
101                            // Ignore
102                        }
103                    }
104                }
105            }
106        };
107        final Future<Boolean> pendingResult =
108                mPduTransferExecutor.submit(copyDownloadedPduToOutput);
109        try {
110            return pendingResult.get(TASK_TIMEOUT_MS, TimeUnit.MILLISECONDS);
111        } catch (Exception e) {
112            // Typically a timeout occurred - cancel task
113            pendingResult.cancel(true);
114        }
115        return false;
116    }
117
118    public static final Parcelable.Creator<DownloadRequest> CREATOR
119            = new Parcelable.Creator<DownloadRequest>() {
120        public DownloadRequest createFromParcel(Parcel in) {
121            return new DownloadRequest(in);
122        }
123
124        public DownloadRequest[] newArray(int size) {
125            return new DownloadRequest[size];
126        }
127    };
128
129    private DownloadRequest(Parcel in) {
130        super(in);
131    }
132}
133