1 /* 2 * Copyright (C) 2008 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 17 package com.android.email.mail.internet; 18 19 import java.io.BufferedWriter; 20 import java.io.IOException; 21 import java.io.InputStream; 22 import java.io.OutputStream; 23 import java.io.OutputStreamWriter; 24 25 import com.android.email.mail.BodyPart; 26 import com.android.email.mail.MessagingException; 27 import com.android.email.mail.Multipart; 28 29 public class MimeMultipart extends Multipart { 30 protected String mPreamble; 31 32 protected String mContentType; 33 34 protected String mBoundary; 35 36 protected String mSubType; 37 38 public MimeMultipart() throws MessagingException { 39 mBoundary = generateBoundary(); 40 setSubType("mixed"); 41 } 42 43 public MimeMultipart(String contentType) throws MessagingException { 44 this.mContentType = contentType; 45 try { 46 mSubType = MimeUtility.getHeaderParameter(contentType, null).split("/")[1]; 47 mBoundary = MimeUtility.getHeaderParameter(contentType, "boundary"); 48 if (mBoundary == null) { 49 throw new MessagingException("MultiPart does not contain boundary: " + contentType); 50 } 51 } catch (Exception e) { 52 throw new MessagingException( 53 "Invalid MultiPart Content-Type; must contain subtype and boundary. (" 54 + contentType + ")", 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 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 = (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 public InputStream getInputStream() throws MessagingException { 105 return null; 106 } 107 108 public String getSubTypeForTest() { 109 return mSubType; 110 } 111 } 112
