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