154 lines
5.0 KiB
Java
154 lines
5.0 KiB
Java
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.emailcommon.internet;
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import com.android.emailcommon.mail.MessagingException;
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import com.android.emailcommon.utility.Utility;
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import java.io.BufferedWriter;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.io.OutputStreamWriter;
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import java.util.ArrayList;
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public class MimeHeader {
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/**
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* Application specific header that contains Store specific information about an attachment.
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* In IMAP this contains the IMAP BODYSTRUCTURE part id so that the ImapStore can later
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* retrieve the attachment at will from the server.
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* The info is recorded from this header on LocalStore.appendMessages and is put back
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* into the MIME data by LocalStore.fetch.
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*/
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public static final String HEADER_ANDROID_ATTACHMENT_STORE_DATA = "X-Android-Attachment-StoreData";
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/**
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* Application specific header that is used to tag body parts for quoted/forwarded messages.
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*/
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public static final String HEADER_ANDROID_BODY_QUOTED_PART = "X-Android-Body-Quoted-Part";
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public static final String HEADER_CONTENT_TYPE = "Content-Type";
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public static final String HEADER_CONTENT_TRANSFER_ENCODING = "Content-Transfer-Encoding";
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public static final String HEADER_CONTENT_DISPOSITION = "Content-Disposition";
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public static final String HEADER_CONTENT_ID = "Content-ID";
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/**
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* Fields that should be omitted when writing the header using writeTo()
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*/
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private static final String[] WRITE_OMIT_FIELDS = {
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// HEADER_ANDROID_ATTACHMENT_DOWNLOADED,
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// HEADER_ANDROID_ATTACHMENT_ID,
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HEADER_ANDROID_ATTACHMENT_STORE_DATA
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};
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protected final ArrayList<Field> mFields = new ArrayList<Field>();
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public void clear() {
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mFields.clear();
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}
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public String getFirstHeader(String name) throws MessagingException {
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String[] header = getHeader(name);
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if (header == null) {
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return null;
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}
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return header[0];
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}
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public void addHeader(String name, String value) throws MessagingException {
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mFields.add(new Field(name, value));
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}
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public void setHeader(String name, String value) throws MessagingException {
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if (name == null || value == null) {
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return;
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}
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removeHeader(name);
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addHeader(name, value);
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}
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public String[] getHeader(String name) throws MessagingException {
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ArrayList<String> values = new ArrayList<String>();
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for (Field field : mFields) {
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if (field.name.equalsIgnoreCase(name)) {
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values.add(field.value);
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}
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}
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if (values.size() == 0) {
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return null;
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}
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return values.toArray(new String[] {});
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}
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public void removeHeader(String name) throws MessagingException {
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ArrayList<Field> removeFields = new ArrayList<Field>();
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for (Field field : mFields) {
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if (field.name.equalsIgnoreCase(name)) {
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removeFields.add(field);
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}
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}
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mFields.removeAll(removeFields);
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}
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/**
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* Write header into String
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*
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* @return CR-NL separated header string except the headers in writeOmitFields
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* null if header is empty
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*/
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public String writeToString() {
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if (mFields.size() == 0) {
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return null;
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}
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StringBuilder builder = new StringBuilder();
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for (Field field : mFields) {
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if (!Utility.arrayContains(WRITE_OMIT_FIELDS, field.name)) {
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builder.append(field.name + ": " + field.value + "\r\n");
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}
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}
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return builder.toString();
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}
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public void writeTo(OutputStream out) throws IOException, MessagingException {
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BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(out), 1024);
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for (Field field : mFields) {
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if (!Utility.arrayContains(WRITE_OMIT_FIELDS, field.name)) {
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writer.write(field.name + ": " + field.value + "\r\n");
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}
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}
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writer.flush();
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}
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private static class Field {
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final String name;
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final String value;
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public Field(String name, String value) {
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this.name = name;
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this.value = value;
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}
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@Override
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public String toString() {
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return name + "=" + value;
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}
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}
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@Override
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public String toString() {
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return (mFields == null) ? null : mFields.toString();
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}
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}
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