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 */
16package com.android.voicemail.impl.mail.internet;
17
18import com.android.voicemail.impl.mail.BodyPart;
19import com.android.voicemail.impl.mail.MessagingException;
20import com.android.voicemail.impl.mail.Multipart;
21import java.io.BufferedWriter;
22import java.io.IOException;
23import java.io.InputStream;
24import java.io.OutputStream;
25import java.io.OutputStreamWriter;
26
27public class MimeMultipart extends Multipart {
28  protected String mPreamble;
29
30  protected String mContentType;
31
32  protected String mBoundary;
33
34  protected String mSubType;
35
36  public MimeMultipart() throws MessagingException {
37    mBoundary = generateBoundary();
38    setSubType("mixed");
39  }
40
41  public MimeMultipart(String contentType) throws MessagingException {
42    this.mContentType = contentType;
43    try {
44      mSubType = MimeUtility.getHeaderParameter(contentType, null).split("/")[1];
45      mBoundary = MimeUtility.getHeaderParameter(contentType, "boundary");
46      if (mBoundary == null) {
47        throw new MessagingException("MultiPart does not contain boundary: " + contentType);
48      }
49    } catch (Exception e) {
50      throw new MessagingException(
51          "Invalid MultiPart Content-Type; must contain subtype and boundary. ("
52              + contentType
53              + ")",
54          e);
55    }
56  }
57
58  public String generateBoundary() {
59    StringBuffer sb = new StringBuffer();
60    sb.append("----");
61    for (int i = 0; i < 30; i++) {
62      sb.append(Integer.toString((int) (Math.random() * 35), 36));
63    }
64    return sb.toString().toUpperCase();
65  }
66
67  public String getPreamble() throws MessagingException {
68    return mPreamble;
69  }
70
71  public void setPreamble(String preamble) throws MessagingException {
72    this.mPreamble = preamble;
73  }
74
75  @Override
76  public String getContentType() throws MessagingException {
77    return mContentType;
78  }
79
80  public void setSubType(String subType) throws MessagingException {
81    this.mSubType = subType;
82    mContentType = String.format("multipart/%s; boundary=\"%s\"", subType, mBoundary);
83  }
84
85  @Override
86  public void writeTo(OutputStream out) throws IOException, MessagingException {
87    BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(out), 1024);
88
89    if (mPreamble != null) {
90      writer.write(mPreamble + "\r\n");
91    }
92
93    for (int i = 0, count = mParts.size(); i < count; i++) {
94      BodyPart bodyPart = mParts.get(i);
95      writer.write("--" + mBoundary + "\r\n");
96      writer.flush();
97      bodyPart.writeTo(out);
98      writer.write("\r\n");
99    }
100
101    writer.write("--" + mBoundary + "--\r\n");
102    writer.flush();
103  }
104
105  @Override
106  public InputStream getInputStream() throws MessagingException {
107    return null;
108  }
109
110  public String getSubTypeForTest() {
111    return mSubType;
112  }
113}
114