mirror of https://github.com/M66B/FairEmail.git
1629 lines
65 KiB
Java
1629 lines
65 KiB
Java
package eu.faircode.email;
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/*
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This file is part of FairEmail.
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FairEmail is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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FairEmail is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with FairEmail. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2018-2019 by Marcel Bokhorst (M66B)
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*/
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import android.content.Context;
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import android.net.MailTo;
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import android.net.Uri;
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import android.text.TextUtils;
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import com.sun.mail.util.FolderClosedIOException;
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import com.sun.mail.util.MessageRemovedIOException;
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import org.jsoup.nodes.Document;
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import java.io.BufferedInputStream;
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import java.io.BufferedOutputStream;
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import java.io.BufferedReader;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.FileReader;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.io.UnsupportedEncodingException;
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import java.nio.charset.Charset;
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import java.nio.charset.StandardCharsets;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Date;
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import java.util.Enumeration;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Locale;
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import java.util.Map;
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import java.util.Objects;
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import java.util.Properties;
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import java.util.TimeZone;
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import java.util.regex.Pattern;
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import javax.activation.DataHandler;
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import javax.activation.DataSource;
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import javax.activation.FileDataSource;
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import javax.activation.FileTypeMap;
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import javax.mail.Address;
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import javax.mail.BodyPart;
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import javax.mail.Flags;
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import javax.mail.FolderClosedException;
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import javax.mail.Header;
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import javax.mail.Message;
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import javax.mail.MessageRemovedException;
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import javax.mail.MessagingException;
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import javax.mail.Multipart;
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import javax.mail.Part;
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import javax.mail.Session;
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import javax.mail.internet.AddressException;
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import javax.mail.internet.ContentType;
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import javax.mail.internet.InternetAddress;
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import javax.mail.internet.MailDateFormat;
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import javax.mail.internet.MimeBodyPart;
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import javax.mail.internet.MimeMessage;
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import javax.mail.internet.MimeMultipart;
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import javax.mail.internet.MimeUtility;
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import javax.mail.internet.ParameterList;
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import javax.mail.internet.ParseException;
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import biweekly.Biweekly;
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import biweekly.ICalendar;
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public class MessageHelper {
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private MimeMessage imessage;
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static final int SMALL_MESSAGE_SIZE = 32 * 1024; // bytes
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static final int DEFAULT_ATTACHMENT_DOWNLOAD_SIZE = 256 * 1024; // bytes
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static void setSystemProperties(Context context) {
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System.setProperty("mail.mime.decodetext.strict", "false");
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System.setProperty("mail.mime.ignoreunknownencoding", "true"); // Content-Transfer-Encoding
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System.setProperty("mail.mime.base64.ignoreerrors", "true");
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System.setProperty("mail.mime.decodefilename", "true");
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System.setProperty("mail.mime.encodefilename", "true");
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System.setProperty("mail.mime.allowutf8", "false"); // InternetAddress, MimeBodyPart, MimeUtility
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System.setProperty("mail.mime.cachemultipart", "false");
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// https://docs.oracle.com/javaee/6/api/javax/mail/internet/MimeMultipart.html
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System.setProperty("mail.mime.multipart.ignoremissingboundaryparameter", "true"); // default true, javax.mail.internet.ParseException: In parameter list
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System.setProperty("mail.mime.multipart.ignoreexistingboundaryparameter", "true"); // default false
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System.setProperty("mail.mime.multipart.ignoremissingendboundary", "true"); // default true
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System.setProperty("mail.mime.multipart.allowempty", "true"); // default false
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}
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static Properties getSessionProperties() {
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Properties props = new Properties();
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// MIME
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props.put("mail.mime.allowutf8", "false"); // SMTPTransport, MimeMessage
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props.put("mail.mime.address.strict", "false");
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return props;
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}
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static MimeMessageEx from(Context context, EntityMessage message, EntityIdentity identity, Session isession)
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throws MessagingException, IOException {
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DB db = DB.getInstance(context);
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MimeMessageEx imessage = new MimeMessageEx(isession, message.msgid);
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// Flags
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imessage.setFlag(Flags.Flag.SEEN, message.seen);
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imessage.setFlag(Flags.Flag.FLAGGED, message.flagged);
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imessage.setFlag(Flags.Flag.ANSWERED, message.answered);
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// Priority
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if (EntityMessage.PRIORITIY_LOW.equals(message.priority)) {
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// Low
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imessage.addHeader("Importance", "Low");
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imessage.addHeader("Priority", "Non-Urgent");
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imessage.addHeader("X-Priority", "5"); // Lowest
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imessage.addHeader("X-MSMail-Priority", "Low");
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} else if (EntityMessage.PRIORITIY_HIGH.equals(message.priority)) {
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// High
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imessage.addHeader("Importance", "High");
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imessage.addHeader("Priority", "Urgent");
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imessage.addHeader("X-Priority", "1"); // Highest
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imessage.addHeader("X-MSMail-Priority", "High");
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}
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// References
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if (message.references != null)
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imessage.addHeader("References", message.references);
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if (message.inreplyto != null)
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imessage.addHeader("In-Reply-To", message.inreplyto);
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imessage.addHeader("X-Correlation-ID", message.msgid);
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// Addresses
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if (message.from != null && message.from.length > 0) {
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String email = ((InternetAddress) message.from[0]).getAddress();
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String name = ((InternetAddress) message.from[0]).getPersonal();
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if (email != null && identity != null && identity.sender_extra && !TextUtils.isEmpty(message.extra)) {
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int at = email.indexOf('@');
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email = message.extra + email.substring(at);
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Log.i("extra=" + email);
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}
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imessage.setFrom(new InternetAddress(email, name));
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}
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if (message.to != null && message.to.length > 0)
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imessage.setRecipients(Message.RecipientType.TO, message.to);
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if (message.cc != null && message.cc.length > 0)
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imessage.setRecipients(Message.RecipientType.CC, message.cc);
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if (message.bcc != null && message.bcc.length > 0)
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imessage.setRecipients(Message.RecipientType.BCC, message.bcc);
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if (message.subject != null)
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imessage.setSubject(message.subject);
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// Send message
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if (identity != null) {
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// Add reply to
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if (identity.replyto != null)
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imessage.setReplyTo(InternetAddress.parse(identity.replyto));
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// Add extra bcc
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if (identity.bcc != null) {
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List<Address> bcc = new ArrayList<>();
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Address[] existing = imessage.getRecipients(Message.RecipientType.BCC);
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if (existing != null)
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bcc.addAll(Arrays.asList(existing));
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Address[] all = imessage.getAllRecipients();
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Address[] abccs = InternetAddress.parse(identity.bcc);
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for (Address abcc : abccs) {
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boolean found = false;
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if (all != null)
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for (Address a : all)
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if (equalEmail(a, abcc)) {
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found = true;
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break;
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}
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if (!found)
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bcc.add(abcc);
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}
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imessage.setRecipients(Message.RecipientType.BCC, bcc.toArray(new Address[0]));
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}
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// Delivery/read request
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if (message.receipt_request != null && message.receipt_request) {
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String to = (identity.replyto == null ? identity.email : identity.replyto);
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// defacto standard
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imessage.addHeader("Return-Receipt-To", to);
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// https://tools.ietf.org/html/rfc3798
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imessage.addHeader("Disposition-Notification-To", to);
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}
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}
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// Auto answer
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if (message.unsubscribe != null)
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imessage.addHeader("List-Unsubscribe", "<" + message.unsubscribe + ">");
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MailDateFormat mdf = new MailDateFormat();
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mdf.setTimeZone(TimeZone.getTimeZone("UTC"));
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imessage.setHeader("Date", mdf.format(new Date()));
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//imessage.setSentDate(new Date());
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List<EntityAttachment> attachments = db.attachment().getAttachments(message.id);
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if (message.from != null && message.from.length > 0)
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for (EntityAttachment attachment : attachments)
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if (EntityAttachment.PGP_KEY.equals(attachment.encryption)) {
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InternetAddress from = (InternetAddress) message.from[0];
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File file = attachment.getFile(context);
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StringBuilder sb = new StringBuilder();
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try (BufferedReader br = new BufferedReader(new FileReader(file))) {
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String line;
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while ((line = br.readLine()) != null)
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if (!line.startsWith("-----") && !line.endsWith("-----"))
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sb.append(line);
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}
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imessage.addHeader("Autocrypt",
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"addr=" + from.getAddress() + ";" +
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" prefer-encrypt=mutual;" +
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" keydata=" + sb.toString());
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}
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// PGP: https://tools.ietf.org/html/rfc3156
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// S/MIME: https://tools.ietf.org/html/rfc8551
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for (final EntityAttachment attachment : attachments)
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if (EntityAttachment.PGP_SIGNATURE.equals(attachment.encryption)) {
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Log.i("Sending PGP signed message");
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for (final EntityAttachment content : attachments)
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if (EntityAttachment.PGP_CONTENT.equals(content.encryption)) {
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BodyPart bpContent = new MimeBodyPart(new FileInputStream(content.getFile(context)));
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final ContentType cts = new ContentType(attachment.type);
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String micalg = cts.getParameter("micalg");
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ParameterList params = cts.getParameterList();
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params.remove("micalg");
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cts.setParameterList(params);
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// Build signature
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BodyPart bpSignature = new MimeBodyPart();
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bpSignature.setFileName(attachment.name);
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FileDataSource dsSignature = new FileDataSource(attachment.getFile(context));
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dsSignature.setFileTypeMap(new FileTypeMap() {
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@Override
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public String getContentType(File file) {
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return cts.toString();
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}
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@Override
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public String getContentType(String filename) {
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return cts.toString();
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}
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});
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bpSignature.setDataHandler(new DataHandler(dsSignature));
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bpSignature.setDisposition(Part.INLINE);
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// Build message
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ContentType ct = new ContentType("multipart/signed");
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ct.setParameter("micalg", micalg);
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ct.setParameter("protocol", "application/pgp-signature");
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String ctx = ct.toString();
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int slash = ctx.indexOf("/");
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Multipart multipart = new MimeMultipart(ctx.substring(slash + 1));
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multipart.addBodyPart(bpContent);
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multipart.addBodyPart(bpSignature);
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imessage.setContent(multipart);
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return imessage;
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}
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throw new IllegalStateException("PGP content not found");
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} else if (EntityAttachment.PGP_MESSAGE.equals(attachment.encryption)) {
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Log.i("Sending PGP encrypted message");
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// Build header
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BodyPart bpHeader = new MimeBodyPart();
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bpHeader.setContent("", "application/pgp-encrypted");
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// Build content
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BodyPart bpContent = new MimeBodyPart();
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bpContent.setFileName(attachment.name);
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FileDataSource dsContent = new FileDataSource(attachment.getFile(context));
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dsContent.setFileTypeMap(new FileTypeMap() {
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@Override
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public String getContentType(File file) {
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return attachment.type;
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}
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@Override
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public String getContentType(String filename) {
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return attachment.type;
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}
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});
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bpContent.setDataHandler(new DataHandler(dsContent));
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bpContent.setDisposition(Part.INLINE);
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// Build message
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ContentType ct = new ContentType("multipart/encrypted");
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ct.setParameter("protocol", "application/pgp-encrypted");
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String ctx = ct.toString();
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int slash = ctx.indexOf("/");
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Multipart multipart = new MimeMultipart(ctx.substring(slash + 1));
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multipart.addBodyPart(bpHeader);
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multipart.addBodyPart(bpContent);
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imessage.setContent(multipart);
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return imessage;
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} else if (EntityAttachment.SMIME_SIGNATURE.equals(attachment.encryption)) {
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Log.i("Sending S/MIME signed message");
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for (final EntityAttachment content : attachments)
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if (EntityAttachment.SMIME_CONTENT.equals(content.encryption)) {
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BodyPart bpContent = new MimeBodyPart(new FileInputStream(content.getFile(context)));
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final ContentType cts = new ContentType(attachment.type);
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String micalg = cts.getParameter("micalg");
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ParameterList params = cts.getParameterList();
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params.remove("micalg");
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cts.setParameterList(params);
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// Build signature
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BodyPart bpSignature = new MimeBodyPart();
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bpSignature.setFileName(attachment.name);
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FileDataSource dsSignature = new FileDataSource(attachment.getFile(context));
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dsSignature.setFileTypeMap(new FileTypeMap() {
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@Override
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public String getContentType(File file) {
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return cts.toString();
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}
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@Override
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public String getContentType(String filename) {
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return cts.toString();
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}
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});
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bpSignature.setDataHandler(new DataHandler(dsSignature));
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bpSignature.setDisposition(Part.INLINE);
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// Build message
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ContentType ct = new ContentType("multipart/signed");
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ct.setParameter("micalg", micalg);
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ct.setParameter("protocol", "application/pkcs7-signature");
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ct.setParameter("smime-type", "signed-data");
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String ctx = ct.toString();
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int slash = ctx.indexOf("/");
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Multipart multipart = new MimeMultipart(ctx.substring(slash + 1));
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multipart.addBodyPart(bpContent);
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multipart.addBodyPart(bpSignature);
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imessage.setContent(multipart);
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return imessage;
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}
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throw new IllegalStateException("S/MIME content not found");
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} else if (EntityAttachment.SMIME_MESSAGE.equals(attachment.encryption)) {
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Log.i("Sending S/MIME encrypted message");
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File file = attachment.getFile(context);
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byte[] encryptedData = new byte[(int) file.length()];
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try (InputStream is = new FileInputStream(file)) {
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is.read(encryptedData);
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}
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// Build message
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ContentType ct = new ContentType("application/pkcs7-mime");
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ct.setParameter("name", attachment.name);
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ct.setParameter("smime-type", "enveloped-data");
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imessage.setDisposition(Part.ATTACHMENT);
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imessage.setFileName(attachment.name);
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imessage.setDataHandler(new DataHandler(new DataSource() {
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@Override
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public InputStream getInputStream() throws IOException {
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return new ByteArrayInputStream(encryptedData);
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}
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@Override
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public OutputStream getOutputStream() throws IOException {
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return null;
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}
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@Override
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public String getContentType() {
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return ct.toString();
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}
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@Override
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public String getName() {
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return null;
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}
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}));
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return imessage;
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}
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build(context, message, attachments, identity, imessage);
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return imessage;
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}
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static void build(Context context, EntityMessage message, List<EntityAttachment> attachments, EntityIdentity identity, MimeMessage imessage) throws IOException, MessagingException {
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if (message.receipt != null && message.receipt) {
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// https://www.ietf.org/rfc/rfc3798.txt
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Multipart report = new MimeMultipart("report; report-type=disposition-notification");
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String plainContent = HtmlHelper.getText(Helper.readText(message.getFile(context)));
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BodyPart plainPart = new MimeBodyPart();
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plainPart.setContent(plainContent, "text/plain; charset=" + Charset.defaultCharset().name());
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report.addBodyPart(plainPart);
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String from = null;
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if (message.from != null && message.from.length > 0)
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from = ((InternetAddress) message.from[0]).getAddress();
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StringBuilder sb = new StringBuilder();
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sb.append("Reporting-UA: ").append(BuildConfig.APPLICATION_ID).append("; ").append(BuildConfig.VERSION_NAME).append("\r\n");
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if (from != null)
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sb.append("Original-Recipient: rfc822;").append(from).append("\r\n");
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sb.append("Disposition: manual-action/MDN-sent-manually; displayed").append("\r\n");
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BodyPart dnsPart = new MimeBodyPart();
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dnsPart.setContent(sb.toString(), "message/disposition-notification; name=\"MDNPart2.txt\"");
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dnsPart.setDisposition(Part.INLINE);
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report.addBodyPart(dnsPart);
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//BodyPart headersPart = new MimeBodyPart();
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//headersPart.setContent("", "text/rfc822-headers; name=\"MDNPart3.txt\"");
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//headersPart.setDisposition(Part.INLINE);
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//report.addBodyPart(headersPart);
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imessage.setContent(report);
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return;
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}
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// Build html body
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Document document = JsoupEx.parse(Helper.readText(message.getFile(context)));
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// When sending message
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if (identity != null)
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document.select("div[fairemail=signature],div[fairemail=reference]").removeAttr("fairemail");
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// multipart/mixed
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// multipart/related
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// multipart/alternative
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// text/plain
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// text/html
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// inlines
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// attachments
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String htmlContent = document.html();
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String plainContent = HtmlHelper.getText(htmlContent);
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BodyPart plainPart = new MimeBodyPart();
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plainPart.setContent(plainContent, "text/plain; charset=" + Charset.defaultCharset().name());
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BodyPart htmlPart = new MimeBodyPart();
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htmlPart.setContent(htmlContent, "text/html; charset=" + Charset.defaultCharset().name());
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Multipart altMultiPart = new MimeMultipart("alternative");
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altMultiPart.addBodyPart(plainPart);
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altMultiPart.addBodyPart(htmlPart);
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int availableAttachments = 0;
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boolean hasInline = false;
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for (EntityAttachment attachment : attachments)
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if (attachment.available) {
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availableAttachments++;
|
|
if (attachment.isInline())
|
|
hasInline = true;
|
|
}
|
|
|
|
if (availableAttachments == 0)
|
|
if (message.plain_only != null && message.plain_only)
|
|
imessage.setContent(plainContent, plainPart.getContentType());
|
|
else
|
|
imessage.setContent(altMultiPart);
|
|
else {
|
|
Multipart mixedMultiPart = new MimeMultipart("mixed");
|
|
Multipart relatedMultiPart = new MimeMultipart("related");
|
|
|
|
BodyPart bodyPart;
|
|
if (message.plain_only != null && message.plain_only)
|
|
bodyPart = plainPart;
|
|
else {
|
|
bodyPart = new MimeBodyPart();
|
|
bodyPart.setContent(altMultiPart);
|
|
}
|
|
|
|
if (hasInline) {
|
|
relatedMultiPart.addBodyPart(bodyPart);
|
|
MimeBodyPart relatedPart = new MimeBodyPart();
|
|
relatedPart.setContent(relatedMultiPart);
|
|
mixedMultiPart.addBodyPart(relatedPart);
|
|
} else
|
|
mixedMultiPart.addBodyPart(bodyPart);
|
|
|
|
for (final EntityAttachment attachment : attachments)
|
|
if (attachment.available) {
|
|
BodyPart attachmentPart = new MimeBodyPart();
|
|
|
|
File file = attachment.getFile(context);
|
|
|
|
FileDataSource dataSource = new FileDataSource(file);
|
|
dataSource.setFileTypeMap(new FileTypeMap() {
|
|
@Override
|
|
public String getContentType(File file) {
|
|
// https://tools.ietf.org/html/rfc6047
|
|
if ("text/calendar".equals(attachment.type))
|
|
try {
|
|
ICalendar icalendar = Biweekly.parse(file).first();
|
|
if (icalendar != null &&
|
|
icalendar.getMethod() != null &&
|
|
icalendar.getMethod().isReply())
|
|
return "text/calendar" +
|
|
"; method=REPLY" +
|
|
"; charset=" + Charset.defaultCharset().name();
|
|
} catch (IOException ex) {
|
|
Log.e(ex);
|
|
}
|
|
|
|
return attachment.type;
|
|
}
|
|
|
|
@Override
|
|
public String getContentType(String filename) {
|
|
return getContentType(new File(filename));
|
|
}
|
|
});
|
|
attachmentPart.setDataHandler(new DataHandler(dataSource));
|
|
|
|
attachmentPart.setFileName(attachment.name);
|
|
if (attachment.disposition != null)
|
|
attachmentPart.setDisposition(attachment.disposition);
|
|
if (attachment.cid != null)
|
|
attachmentPart.setHeader("Content-ID", attachment.cid);
|
|
|
|
if (attachment.isInline())
|
|
relatedMultiPart.addBodyPart(attachmentPart);
|
|
else
|
|
mixedMultiPart.addBodyPart(attachmentPart);
|
|
}
|
|
|
|
imessage.setContent(mixedMultiPart);
|
|
}
|
|
}
|
|
|
|
static void overrideContentTransferEncoding(Multipart mp) throws MessagingException, IOException {
|
|
for (int i = 0; i < mp.getCount(); i++) {
|
|
Part part = mp.getBodyPart(i);
|
|
Object content = part.getContent();
|
|
if (content instanceof Multipart) {
|
|
part.setHeader("Content-Transfer-Encoding", "7bit");
|
|
overrideContentTransferEncoding((Multipart) content);
|
|
} else
|
|
part.setHeader("Content-Transfer-Encoding", "base64");
|
|
}
|
|
}
|
|
|
|
MessageHelper(MimeMessage message) {
|
|
this.imessage = message;
|
|
}
|
|
|
|
boolean getSeen() throws MessagingException {
|
|
return imessage.isSet(Flags.Flag.SEEN);
|
|
}
|
|
|
|
boolean getAnsered() throws MessagingException {
|
|
return imessage.isSet(Flags.Flag.ANSWERED);
|
|
}
|
|
|
|
boolean getFlagged() throws MessagingException {
|
|
return imessage.isSet(Flags.Flag.FLAGGED);
|
|
}
|
|
|
|
String getFlags() throws MessagingException {
|
|
if (!BuildConfig.DEBUG)
|
|
return null;
|
|
|
|
Flags flags = imessage.getFlags();
|
|
flags.clearUserFlags();
|
|
return flags.toString();
|
|
}
|
|
|
|
String[] getKeywords() throws MessagingException {
|
|
return imessage.getFlags().getUserFlags();
|
|
}
|
|
|
|
String getMessageID() throws MessagingException {
|
|
// Outlook outbox -> sent
|
|
String header = imessage.getHeader("X-Correlation-ID", null);
|
|
if (header == null)
|
|
header = imessage.getHeader("Message-ID", null);
|
|
return (header == null ? null : MimeUtility.unfold(header));
|
|
}
|
|
|
|
String[] getReferences() throws MessagingException {
|
|
String refs = imessage.getHeader("References", null);
|
|
return (refs == null ? new String[0] : MimeUtility.unfold(refs).split("\\s+"));
|
|
}
|
|
|
|
String getDeliveredTo() throws MessagingException {
|
|
String header = imessage.getHeader("Delivered-To", null);
|
|
if (header == null)
|
|
header = imessage.getHeader("X-Delivered-To", null);
|
|
return (header == null ? null : MimeUtility.unfold(header));
|
|
}
|
|
|
|
String getInReplyTo() throws MessagingException {
|
|
String header = imessage.getHeader("In-Reply-To", null);
|
|
return (header == null ? null : MimeUtility.unfold(header));
|
|
}
|
|
|
|
String getThreadId(Context context, long account, long uid) throws MessagingException {
|
|
List<String> refs = new ArrayList<>();
|
|
|
|
for (String ref : getReferences())
|
|
if (!TextUtils.isEmpty(ref))
|
|
refs.add(ref);
|
|
|
|
String inreplyto = getInReplyTo();
|
|
if (!TextUtils.isEmpty(inreplyto) && !refs.contains(inreplyto))
|
|
refs.add(inreplyto);
|
|
|
|
DB db = DB.getInstance(context);
|
|
for (String ref : refs) {
|
|
List<EntityMessage> messages = db.message().getMessagesByMsgId(account, ref);
|
|
if (messages.size() > 0)
|
|
return messages.get(0).thread;
|
|
}
|
|
|
|
if (refs.size() > 0)
|
|
return refs.get(0);
|
|
|
|
String msgid = getMessageID();
|
|
return (TextUtils.isEmpty(msgid) ? Long.toString(uid) : msgid);
|
|
}
|
|
|
|
Integer getPriority() throws MessagingException {
|
|
Integer priority = null;
|
|
|
|
// https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/ms-oxcmail/2bb19f1b-b35e-4966-b1cb-1afd044e83ab
|
|
String header = imessage.getHeader("Importance", null);
|
|
if (header == null)
|
|
header = imessage.getHeader("Priority", null);
|
|
if (header == null)
|
|
header = imessage.getHeader("X-Priority", null);
|
|
if (header == null)
|
|
header = imessage.getHeader("X-MSMail-Priority", null);
|
|
|
|
if (header != null) {
|
|
int sp = header.indexOf(" ");
|
|
if (sp >= 0)
|
|
header = header.substring(0, sp); // "2 (High)"
|
|
header = header.trim();
|
|
}
|
|
|
|
if ("high".equalsIgnoreCase(header) ||
|
|
"highest".equalsIgnoreCase(header) ||
|
|
"u".equalsIgnoreCase(header) || // Urgent?
|
|
"urgent".equalsIgnoreCase(header) ||
|
|
"critical".equalsIgnoreCase(header) ||
|
|
"yes".equalsIgnoreCase(header))
|
|
priority = EntityMessage.PRIORITIY_HIGH;
|
|
else if ("normal".equalsIgnoreCase(header) ||
|
|
"medium".equalsIgnoreCase(header) ||
|
|
"med".equalsIgnoreCase(header))
|
|
priority = EntityMessage.PRIORITIY_NORMAL;
|
|
else if ("low".equalsIgnoreCase(header) ||
|
|
"non-urgent".equalsIgnoreCase(header) ||
|
|
"marketing".equalsIgnoreCase(header) ||
|
|
"bulk".equalsIgnoreCase(header) ||
|
|
"batch".equalsIgnoreCase(header) ||
|
|
"b".equalsIgnoreCase(header) ||
|
|
"mass".equalsIgnoreCase(header))
|
|
priority = EntityMessage.PRIORITIY_LOW;
|
|
else if (!TextUtils.isEmpty(header))
|
|
try {
|
|
priority = Integer.parseInt(header);
|
|
if (priority < 3)
|
|
priority = EntityMessage.PRIORITIY_HIGH;
|
|
else if (priority > 3)
|
|
priority = EntityMessage.PRIORITIY_LOW;
|
|
else
|
|
priority = EntityMessage.PRIORITIY_NORMAL;
|
|
} catch (NumberFormatException ex) {
|
|
Log.e("priority=" + header);
|
|
}
|
|
|
|
if (EntityMessage.PRIORITIY_NORMAL.equals(priority))
|
|
priority = null;
|
|
|
|
return priority;
|
|
}
|
|
|
|
boolean getReceiptRequested() throws MessagingException {
|
|
return (imessage.getHeader("Return-Receipt-To") != null ||
|
|
imessage.getHeader("Disposition-Notification-To") != null);
|
|
}
|
|
|
|
Address[] getReceiptTo() throws MessagingException {
|
|
return getAddressHeader("Disposition-Notification-To");
|
|
}
|
|
|
|
String getAuthentication() throws MessagingException {
|
|
String header = imessage.getHeader("Authentication-Results", null);
|
|
return (header == null ? null : MimeUtility.unfold(header));
|
|
}
|
|
|
|
static Boolean getAuthentication(String type, String header) {
|
|
if (header == null)
|
|
return null;
|
|
|
|
// https://tools.ietf.org/html/rfc7601
|
|
Boolean result = null;
|
|
String[] part = header.split(";");
|
|
for (int i = 1; i < part.length; i++) {
|
|
String[] kv = part[i].split("=");
|
|
if (kv.length > 1) {
|
|
String key = kv[0].trim();
|
|
String[] val = kv[1].trim().split(" ");
|
|
if (val.length > 0 && type.equals(key)) {
|
|
if ("fail".equals(val[0]))
|
|
result = false;
|
|
else if ("pass".equals(val[0]))
|
|
if (result == null)
|
|
result = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
private Address[] getAddressHeader(String name) throws MessagingException {
|
|
String header = imessage.getHeader(name, ",");
|
|
if (header == null)
|
|
return null;
|
|
|
|
header = new String(header.getBytes(StandardCharsets.ISO_8859_1));
|
|
Address[] addresses = InternetAddress.parseHeader(header, false);
|
|
|
|
for (Address address : addresses) {
|
|
InternetAddress iaddress = (InternetAddress) address;
|
|
iaddress.setAddress(decodeMime(iaddress.getAddress()));
|
|
String personal = iaddress.getPersonal();
|
|
if (personal != null) {
|
|
try {
|
|
iaddress.setPersonal(decodeMime(personal));
|
|
} catch (UnsupportedEncodingException ex) {
|
|
Log.w(ex);
|
|
}
|
|
}
|
|
}
|
|
|
|
return addresses;
|
|
}
|
|
|
|
Address[] getFrom() throws MessagingException {
|
|
Address[] address = getAddressHeader("From");
|
|
if (address == null)
|
|
address = getAddressHeader("Sender");
|
|
return address;
|
|
}
|
|
|
|
Address[] getTo() throws MessagingException {
|
|
return getAddressHeader("To");
|
|
}
|
|
|
|
Address[] getCc() throws MessagingException {
|
|
return getAddressHeader("Cc");
|
|
}
|
|
|
|
Address[] getBcc() throws MessagingException {
|
|
return getAddressHeader("Bcc");
|
|
}
|
|
|
|
Address[] getReply() throws MessagingException {
|
|
return getAddressHeader("Reply-To");
|
|
}
|
|
|
|
Address[] getListPost() throws MessagingException {
|
|
String list;
|
|
try {
|
|
// https://www.ietf.org/rfc/rfc2369.txt
|
|
list = imessage.getHeader("List-Post", null);
|
|
if (list == null)
|
|
return null;
|
|
|
|
list = MimeUtility.unfold(list);
|
|
list = decodeMime(list);
|
|
|
|
// List-Post: NO (posting not allowed on this list)
|
|
if (list != null && list.startsWith("NO"))
|
|
return null;
|
|
|
|
// https://www.ietf.org/rfc/rfc2368.txt
|
|
for (String entry : list.split(",")) {
|
|
entry = entry.trim();
|
|
int lt = entry.indexOf("<");
|
|
int gt = entry.lastIndexOf(">");
|
|
if (lt >= 0 && gt > lt)
|
|
try {
|
|
MailTo mailto = MailTo.parse(entry.substring(lt + 1, gt));
|
|
if (mailto.getTo() != null)
|
|
return new Address[]{new InternetAddress(mailto.getTo().split(",")[0], null)};
|
|
} catch (Throwable ex) {
|
|
Log.i(ex);
|
|
}
|
|
}
|
|
|
|
Log.w(new IllegalArgumentException("List-Post: " + list));
|
|
return null;
|
|
} catch (AddressException ex) {
|
|
Log.w(ex);
|
|
return null;
|
|
}
|
|
}
|
|
|
|
String getListUnsubscribe() throws MessagingException {
|
|
String list;
|
|
try {
|
|
// https://www.ietf.org/rfc/rfc2369.txt
|
|
list = imessage.getHeader("List-Unsubscribe", null);
|
|
if (list == null)
|
|
return null;
|
|
|
|
list = MimeUtility.unfold(list);
|
|
list = decodeMime(list);
|
|
|
|
if (list != null && list.startsWith("NO"))
|
|
return null;
|
|
|
|
String link = null;
|
|
String mailto = null;
|
|
for (String entry : list.split(",")) {
|
|
entry = entry.trim();
|
|
int lt = entry.indexOf("<");
|
|
int gt = entry.lastIndexOf(">");
|
|
if (lt >= 0 && gt > lt) {
|
|
String unsubscribe = entry.substring(lt + 1, gt);
|
|
Uri uri = Uri.parse(unsubscribe);
|
|
String scheme = uri.getScheme();
|
|
if (mailto == null && "mailto".equals(scheme))
|
|
mailto = unsubscribe;
|
|
if (link == null && ("http".equals(scheme) || "https".equals(scheme)))
|
|
link = unsubscribe;
|
|
}
|
|
}
|
|
|
|
if (link != null)
|
|
return link;
|
|
if (mailto != null)
|
|
return mailto;
|
|
|
|
Log.w(new IllegalArgumentException("List-Unsubscribe: " + list));
|
|
return null;
|
|
} catch (AddressException ex) {
|
|
Log.w(ex);
|
|
return null;
|
|
}
|
|
}
|
|
|
|
String getSubject() throws MessagingException {
|
|
String subject = imessage.getHeader("Subject", null);
|
|
if (subject == null)
|
|
return null;
|
|
|
|
subject = MimeUtility.unfold(subject);
|
|
subject = new String(subject.getBytes(StandardCharsets.ISO_8859_1));
|
|
subject = decodeMime(subject);
|
|
|
|
return subject;
|
|
}
|
|
|
|
Long getSize() throws MessagingException {
|
|
long size = imessage.getSize();
|
|
//if (size == 0)
|
|
// throw new MessagingException("Message empty");
|
|
return (size < 0 ? null : size);
|
|
}
|
|
|
|
long getReceived() throws MessagingException {
|
|
Date received = imessage.getReceivedDate();
|
|
if (received == null)
|
|
received = imessage.getSentDate();
|
|
return (received == null ? new Date() : received).getTime();
|
|
}
|
|
|
|
Long getSent() throws MessagingException {
|
|
Date date = imessage.getSentDate();
|
|
return (date == null ? null : date.getTime());
|
|
}
|
|
|
|
String getHeaders() throws MessagingException {
|
|
StringBuilder sb = new StringBuilder();
|
|
Enumeration<Header> headers = imessage.getAllHeaders();
|
|
while (headers.hasMoreElements()) {
|
|
Header header = headers.nextElement();
|
|
sb.append(header.getName()).append(": ").append(header.getValue()).append("\n");
|
|
}
|
|
return sb.toString();
|
|
}
|
|
|
|
static String formatAddresses(Address[] addresses) {
|
|
return formatAddresses(addresses, true, false);
|
|
}
|
|
|
|
static String formatAddressesShort(Address[] addresses) {
|
|
return formatAddresses(addresses, false, false);
|
|
}
|
|
|
|
static String formatAddressesCompose(Address[] addresses) {
|
|
String result = formatAddresses(addresses, true, true);
|
|
if (!TextUtils.isEmpty(result))
|
|
result += ", ";
|
|
return result;
|
|
}
|
|
|
|
static String formatAddresses(Address[] addresses, boolean full, boolean compose) {
|
|
if (addresses == null || addresses.length == 0)
|
|
return "";
|
|
|
|
List<String> formatted = new ArrayList<>();
|
|
for (int i = 0; i < addresses.length; i++) {
|
|
boolean duplicate = false;
|
|
for (int j = 0; j < i; j++)
|
|
if (addresses[i].equals(addresses[j])) {
|
|
duplicate = true;
|
|
break;
|
|
}
|
|
if (duplicate)
|
|
continue;
|
|
|
|
if (addresses[i] instanceof InternetAddress) {
|
|
InternetAddress address = (InternetAddress) addresses[i];
|
|
String personal = address.getPersonal();
|
|
if (TextUtils.isEmpty(personal))
|
|
formatted.add(address.getAddress());
|
|
else {
|
|
if (compose) {
|
|
boolean quote = false;
|
|
personal = personal.replace("\"", "");
|
|
for (int c = 0; c < personal.length(); c++)
|
|
if ("()<>,;:\\\"[]@".indexOf(personal.charAt(c)) >= 0) {
|
|
quote = true;
|
|
break;
|
|
}
|
|
if (quote)
|
|
personal = "\"" + personal + "\"";
|
|
}
|
|
|
|
if (full)
|
|
formatted.add(personal + " <" + address.getAddress() + ">");
|
|
else
|
|
formatted.add(personal);
|
|
}
|
|
} else
|
|
formatted.add(addresses[i].toString());
|
|
}
|
|
return TextUtils.join(", ", formatted);
|
|
}
|
|
|
|
static String decodeMime(String text) {
|
|
if (text == null)
|
|
return null;
|
|
|
|
// https://tools.ietf.org/html/rfc2047
|
|
// encoded-word = "=?" charset "?" encoding "?" encoded-text "?="
|
|
|
|
int i = 0;
|
|
boolean first = true;
|
|
List<MimeTextPart> parts = new ArrayList<>();
|
|
|
|
while (i < text.length()) {
|
|
int s = text.indexOf("=?", i);
|
|
if (s < 0)
|
|
break;
|
|
|
|
int q1 = text.indexOf("?", s + 2);
|
|
if (q1 < 0)
|
|
break;
|
|
|
|
int q2 = text.indexOf("?", q1 + 1);
|
|
if (q2 < 0)
|
|
break;
|
|
|
|
int e = text.indexOf("?=", q2 + 1);
|
|
if (e < 0)
|
|
break;
|
|
|
|
String plain = text.substring(i, s);
|
|
if (!first)
|
|
plain = plain.replaceAll("[ \t\n\r]$", "");
|
|
if (!TextUtils.isEmpty(plain))
|
|
parts.add(new MimeTextPart(plain));
|
|
|
|
parts.add(new MimeTextPart(
|
|
text.substring(s + 2, q1),
|
|
text.substring(q1 + 1, q2),
|
|
text.substring(q2 + 1, e)));
|
|
|
|
i = e + 2;
|
|
first = false;
|
|
}
|
|
|
|
if (i < text.length())
|
|
parts.add(new MimeTextPart(text.substring(i)));
|
|
|
|
// Fold words to not break encoding
|
|
/*
|
|
int p = 0;
|
|
while (p + 1 < parts.size()) {
|
|
MimeTextPart p1 = parts.get(p);
|
|
MimeTextPart p2 = parts.get(p + 1);
|
|
if (p1.charset != null && p1.charset.equalsIgnoreCase(p2.charset) &&
|
|
p1.encoding != null && p1.encoding.equalsIgnoreCase(p2.encoding)) {
|
|
p1.text += p2.text;
|
|
parts.remove(p + 1);
|
|
} else
|
|
p++;
|
|
}
|
|
*/
|
|
|
|
StringBuilder sb = new StringBuilder();
|
|
for (MimeTextPart part : parts)
|
|
sb.append(part);
|
|
return sb.toString();
|
|
}
|
|
|
|
private static class MimeTextPart {
|
|
String charset;
|
|
String encoding;
|
|
String text;
|
|
|
|
MimeTextPart(String text) {
|
|
this.text = text;
|
|
}
|
|
|
|
MimeTextPart(String charset, String encoding, String text) {
|
|
this.charset = charset;
|
|
this.encoding = encoding;
|
|
this.text = text;
|
|
}
|
|
|
|
@Override
|
|
public String toString() {
|
|
if (charset == null)
|
|
return text;
|
|
|
|
String word = "=?" + charset + "?" + encoding + "?" + text + "?=";
|
|
try {
|
|
return decodeMime(MimeUtility.decodeWord(word));
|
|
} catch (Throwable ex) {
|
|
Log.w(new IllegalArgumentException(word, ex));
|
|
return word;
|
|
}
|
|
}
|
|
}
|
|
|
|
static String getSortKey(Address[] addresses) {
|
|
if (addresses == null || addresses.length == 0)
|
|
return null;
|
|
InternetAddress address = (InternetAddress) addresses[0];
|
|
// Sort on name will result in inconsistent results
|
|
// because the sender name and sender contact name can differ
|
|
return address.getAddress();
|
|
}
|
|
|
|
class MessageParts {
|
|
private Part plain = null;
|
|
private Part html = null;
|
|
private List<AttachmentPart> attachments = new ArrayList<>();
|
|
private ArrayList<String> warnings = new ArrayList<>();
|
|
|
|
Boolean isPlainOnly() {
|
|
if (plain == null && html == null)
|
|
return null;
|
|
return (html == null);
|
|
}
|
|
|
|
Long getBodySize() throws MessagingException {
|
|
Part part = (html == null ? plain : html);
|
|
if (part == null)
|
|
return null;
|
|
int size = part.getSize();
|
|
if (size < 0)
|
|
return null;
|
|
else
|
|
return (long) size;
|
|
}
|
|
|
|
String getHtml(Context context) throws MessagingException, IOException {
|
|
if (plain == null && html == null) {
|
|
Log.i("No body part");
|
|
return null;
|
|
}
|
|
|
|
String result;
|
|
Part part = (html == null ? plain : html);
|
|
|
|
try {
|
|
Object content = part.getContent();
|
|
Log.i("Content class=" + (content == null ? null : content.getClass().getName()));
|
|
|
|
if (content == null) {
|
|
warnings.add(context.getString(R.string.title_no_body));
|
|
return null;
|
|
}
|
|
|
|
if (content instanceof String)
|
|
result = (String) content;
|
|
else if (content instanceof InputStream)
|
|
// Typically com.sun.mail.util.QPDecoderStream
|
|
result = Helper.readStream((InputStream) content, StandardCharsets.UTF_8.name());
|
|
else
|
|
result = content.toString();
|
|
} catch (IOException | FolderClosedException | MessageRemovedException ex) {
|
|
throw ex;
|
|
} catch (Throwable ex) {
|
|
Log.w(ex);
|
|
warnings.add(Helper.formatThrowable(ex, false));
|
|
return null;
|
|
}
|
|
|
|
try {
|
|
ContentType ct = new ContentType(part.getContentType());
|
|
String charset = ct.getParameter("charset");
|
|
|
|
// Fix common mistakes
|
|
if (charset != null) {
|
|
charset = charset.replace("\"", "");
|
|
if ("ASCII".equals(charset.toUpperCase()))
|
|
charset = "US-ASCII";
|
|
}
|
|
|
|
if (TextUtils.isEmpty(charset) || "US-ASCII".equals(charset.toUpperCase())) {
|
|
// The first 127 characters are the same as in US-ASCII
|
|
result = new String(result.getBytes(StandardCharsets.ISO_8859_1));
|
|
} else {
|
|
// See UnknownCharsetProvider class
|
|
if ("US-ASCII".equals(Charset.forName(charset).name())) {
|
|
Log.w("Unsupported encoding charset=" + charset);
|
|
warnings.add(context.getString(R.string.title_no_charset, charset));
|
|
result = new String(result.getBytes(StandardCharsets.ISO_8859_1));
|
|
}
|
|
}
|
|
} catch (ParseException ex) {
|
|
Log.w(ex);
|
|
warnings.add(Helper.formatThrowable(ex, false));
|
|
}
|
|
|
|
if (part == plain)
|
|
result = "<div>" + HtmlHelper.formatPre(result) + "</div>";
|
|
|
|
return result;
|
|
}
|
|
|
|
List<AttachmentPart> getAttachmentParts() {
|
|
return attachments;
|
|
}
|
|
|
|
List<EntityAttachment> getAttachments() {
|
|
List<EntityAttachment> result = new ArrayList<>();
|
|
for (AttachmentPart apart : attachments)
|
|
result.add(apart.attachment);
|
|
return result;
|
|
}
|
|
|
|
Integer getEncryption() {
|
|
for (AttachmentPart apart : attachments)
|
|
if (EntityAttachment.PGP_SIGNATURE.equals(apart.attachment.encryption))
|
|
return EntityMessage.PGP_SIGNONLY;
|
|
else if (EntityAttachment.PGP_MESSAGE.equals(apart.attachment.encryption))
|
|
return EntityMessage.PGP_SIGNENCRYPT;
|
|
else if (EntityAttachment.SMIME_SIGNATURE.equals(apart.attachment.encryption))
|
|
return EntityMessage.SMIME_SIGNONLY;
|
|
else if (EntityAttachment.SMIME_MESSAGE.equals(apart.attachment.encryption))
|
|
return EntityMessage.SMIME_SIGNENCRYPT;
|
|
return null;
|
|
}
|
|
|
|
void downloadAttachment(Context context, EntityAttachment local) throws IOException, MessagingException {
|
|
List<EntityAttachment> remotes = getAttachments();
|
|
|
|
// Some servers order attachments randomly
|
|
|
|
int index = -1;
|
|
boolean warning = false;
|
|
|
|
// Get attachment by position
|
|
if (local.sequence <= remotes.size()) {
|
|
EntityAttachment remote = remotes.get(local.sequence - 1);
|
|
if (Objects.equals(remote.name, local.name) &&
|
|
Objects.equals(remote.type, local.type) &&
|
|
Objects.equals(remote.disposition, local.disposition) &&
|
|
Objects.equals(remote.cid, local.cid) &&
|
|
Objects.equals(remote.size, local.size))
|
|
index = local.sequence - 1;
|
|
}
|
|
|
|
// Match attachment by name/cid
|
|
if (index < 0 && !(local.name == null && local.cid == null)) {
|
|
warning = true;
|
|
Log.w("Matching attachment by name/cid");
|
|
for (int i = 0; i < remotes.size(); i++) {
|
|
EntityAttachment remote = remotes.get(i);
|
|
if (Objects.equals(remote.name, local.name) &&
|
|
Objects.equals(remote.cid, local.cid)) {
|
|
index = i;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Match attachment by type/size
|
|
if (index < 0) {
|
|
warning = true;
|
|
Log.w("Matching attachment by type/size");
|
|
for (int i = 0; i < remotes.size(); i++) {
|
|
EntityAttachment remote = remotes.get(i);
|
|
if (Objects.equals(remote.type, local.type) &&
|
|
Objects.equals(remote.size, local.size)) {
|
|
index = i;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (index < 0 || warning) {
|
|
Map<String, String> crumb = new HashMap<>();
|
|
crumb.put("local", local.toString());
|
|
Log.w("Attachment not found local=" + local);
|
|
for (int i = 0; i < remotes.size(); i++) {
|
|
EntityAttachment remote = remotes.get(i);
|
|
crumb.put("remote:" + i, remote.toString());
|
|
Log.w("Attachment remote=" + remote);
|
|
}
|
|
Log.breadcrumb("attachments", crumb);
|
|
}
|
|
|
|
if (index < 0)
|
|
throw new IllegalArgumentException("Attachment not found");
|
|
|
|
downloadAttachment(context, index, local);
|
|
}
|
|
|
|
void downloadAttachment(Context context, int index, EntityAttachment local) throws MessagingException, IOException {
|
|
Log.i("downloading attachment id=" + local.id + " index=" + index + " " + local);
|
|
|
|
DB db = DB.getInstance(context);
|
|
|
|
// Get data
|
|
AttachmentPart apart = attachments.get(index);
|
|
|
|
// Download attachment
|
|
File file = EntityAttachment.getFile(context, local.id, local.name);
|
|
db.attachment().setProgress(local.id, null);
|
|
|
|
if (EntityAttachment.PGP_CONTENT.equals(apart.encrypt) ||
|
|
EntityAttachment.SMIME_CONTENT.equals(apart.encrypt)) {
|
|
ContentType ct = new ContentType(apart.part.getContentType());
|
|
String boundary = ct.getParameter("boundary");
|
|
if (TextUtils.isEmpty(boundary))
|
|
throw new ParseException("Signed boundary missing");
|
|
|
|
ByteArrayOutputStream bos = new ByteArrayOutputStream();
|
|
apart.part.writeTo(bos);
|
|
String raw = new String(bos.toByteArray());
|
|
String[] parts = raw.split("\\r?\\n" + Pattern.quote("--" + boundary) + "\\r?\\n");
|
|
if (parts.length < 2)
|
|
throw new ParseException("Signed part missing");
|
|
|
|
String c = parts[1]
|
|
.replaceAll(" +$", "") // trim trailing spaces
|
|
.replace("\\r?\\n", "\\r\\n"); // normalize new lines
|
|
try (OutputStream os = new FileOutputStream(file)) {
|
|
os.write(c.getBytes());
|
|
}
|
|
|
|
db.attachment().setDownloaded(local.id, file.length());
|
|
} else
|
|
try (InputStream is = apart.part.getInputStream()) {
|
|
long size = 0;
|
|
long total = apart.part.getSize();
|
|
int lastprogress = 0;
|
|
|
|
try (OutputStream os = new FileOutputStream(file)) {
|
|
byte[] buffer = new byte[Helper.BUFFER_SIZE];
|
|
for (int len = is.read(buffer); len != -1; len = is.read(buffer)) {
|
|
size += len;
|
|
os.write(buffer, 0, len);
|
|
|
|
// Update progress
|
|
if (total > 0) {
|
|
int progress = (int) (size * 100 / total / 20 * 20);
|
|
if (progress != lastprogress) {
|
|
lastprogress = progress;
|
|
db.attachment().setProgress(local.id, progress);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Store attachment data
|
|
db.attachment().setDownloaded(local.id, size);
|
|
|
|
Log.i("Downloaded attachment size=" + size);
|
|
} catch (FolderClosedIOException ex) {
|
|
db.attachment().setError(local.id, Helper.formatThrowable(ex));
|
|
throw new FolderClosedException(ex.getFolder(), "downloadAttachment", ex);
|
|
} catch (MessageRemovedIOException ex) {
|
|
db.attachment().setError(local.id, Helper.formatThrowable(ex));
|
|
throw new MessagingException("downloadAttachment", ex);
|
|
} catch (Throwable ex) {
|
|
// Reset progress on failure
|
|
Log.e(ex);
|
|
db.attachment().setError(local.id, Helper.formatThrowable(ex));
|
|
throw ex;
|
|
}
|
|
}
|
|
|
|
String getWarnings(String existing) {
|
|
if (existing != null)
|
|
warnings.add(0, existing);
|
|
if (warnings.size() == 0)
|
|
return null;
|
|
else
|
|
return TextUtils.join(", ", warnings);
|
|
}
|
|
}
|
|
|
|
class AttachmentPart {
|
|
String disposition;
|
|
String filename;
|
|
Integer encrypt;
|
|
Part part;
|
|
EntityAttachment attachment;
|
|
}
|
|
|
|
MessageParts getMessageParts(Context context) throws IOException, MessagingException {
|
|
MessageParts parts = new MessageParts();
|
|
|
|
try {
|
|
imessage.getContentType();
|
|
} catch (MessagingException ex) {
|
|
// https://javaee.github.io/javamail/FAQ#imapserverbug
|
|
if ("Failed to load IMAP envelope".equals(ex.getMessage()) ||
|
|
"Unable to load BODYSTRUCTURE".equals(ex.getMessage())) {
|
|
Log.w("Fetching raw message");
|
|
File file = File.createTempFile("serverbug", null, context.getCacheDir());
|
|
try (OutputStream os = new BufferedOutputStream(new FileOutputStream(file))) {
|
|
imessage.writeTo(os);
|
|
}
|
|
|
|
Properties props = MessageHelper.getSessionProperties();
|
|
Session isession = Session.getInstance(props, null);
|
|
|
|
Log.w("Decoding raw message");
|
|
try (InputStream is = new BufferedInputStream(new FileInputStream(file))) {
|
|
imessage = new MimeMessageEx(isession, is, imessage);
|
|
}
|
|
|
|
file.delete();
|
|
} else
|
|
throw ex;
|
|
}
|
|
|
|
try {
|
|
if (imessage.isMimeType("multipart/signed")) {
|
|
ContentType ct = new ContentType(imessage.getContentType());
|
|
String protocol = ct.getParameter("protocol");
|
|
if ("application/pgp-signature".equals(protocol) ||
|
|
"application/pkcs7-signature".equals(protocol) ||
|
|
"application/x-pkcs7-signature".equals(protocol)) {
|
|
Multipart multipart = (Multipart) imessage.getContent();
|
|
if (multipart.getCount() == 2) {
|
|
getMessageParts(multipart.getBodyPart(0), parts, null);
|
|
getMessageParts(multipart.getBodyPart(1), parts,
|
|
"application/pgp-signature".equals(protocol)
|
|
? EntityAttachment.PGP_SIGNATURE
|
|
: EntityAttachment.SMIME_SIGNATURE);
|
|
|
|
AttachmentPart apart = new AttachmentPart();
|
|
apart.disposition = Part.INLINE;
|
|
apart.filename = "content.asc";
|
|
apart.encrypt = "application/pgp-signature".equals(protocol)
|
|
? EntityAttachment.PGP_CONTENT
|
|
: EntityAttachment.SMIME_CONTENT;
|
|
apart.part = imessage;
|
|
|
|
apart.attachment = new EntityAttachment();
|
|
apart.attachment.disposition = apart.disposition;
|
|
apart.attachment.name = apart.filename;
|
|
apart.attachment.type = "text/plain";
|
|
apart.attachment.size = getSize();
|
|
apart.attachment.encryption = apart.encrypt;
|
|
|
|
parts.attachments.add(apart);
|
|
|
|
return parts;
|
|
}
|
|
}
|
|
} else if (imessage.isMimeType("multipart/encrypted")) {
|
|
ContentType ct = new ContentType(imessage.getContentType());
|
|
String protocol = ct.getParameter("protocol");
|
|
if ("application/pgp-encrypted".equals(protocol)) {
|
|
Multipart multipart = (Multipart) imessage.getContent();
|
|
if (multipart.getCount() == 2) {
|
|
// Ignore header
|
|
getMessageParts(multipart.getBodyPart(1), parts, EntityAttachment.PGP_MESSAGE);
|
|
return parts;
|
|
}
|
|
}
|
|
} else if (imessage.isMimeType("application/pkcs7-mime")) {
|
|
ContentType ct = new ContentType(imessage.getContentType());
|
|
String smimeType = ct.getParameter("smime-type");
|
|
if ("enveloped-data".equals(smimeType)) {
|
|
getMessageParts(imessage, parts, EntityAttachment.SMIME_MESSAGE);
|
|
return parts;
|
|
}
|
|
}
|
|
} catch (ParseException ex) {
|
|
Log.w(ex);
|
|
}
|
|
|
|
getMessageParts(imessage, parts, null);
|
|
return parts;
|
|
}
|
|
|
|
private void getMessageParts(Part part, MessageParts parts, Integer encrypt) throws IOException, MessagingException {
|
|
try {
|
|
if (BuildConfig.DEBUG)
|
|
Log.i("Part class=" + part.getClass() + " type=" + part.getContentType());
|
|
if (part.isMimeType("multipart/*")) {
|
|
Multipart multipart;
|
|
Object content = part.getContent();
|
|
if (content instanceof Multipart)
|
|
multipart = (Multipart) part.getContent();
|
|
else if (content instanceof String) {
|
|
String text = (String) content;
|
|
String sample = text.substring(0, Math.min(80, text.length()));
|
|
throw new ParseException(content.getClass().getName() + ": " + sample);
|
|
} else
|
|
throw new ParseException(content.getClass().getName());
|
|
|
|
for (int i = 0; i < multipart.getCount(); i++)
|
|
try {
|
|
getMessageParts(multipart.getBodyPart(i), parts, encrypt);
|
|
} catch (ParseException ex) {
|
|
// Nested body: try to continue
|
|
// ParseException: In parameter list boundary="...">, expected parameter name, got ";"
|
|
Log.w(ex);
|
|
parts.warnings.add(Helper.formatThrowable(ex, false));
|
|
}
|
|
} else {
|
|
// https://www.iana.org/assignments/cont-disp/cont-disp.xhtml
|
|
String disposition;
|
|
try {
|
|
disposition = part.getDisposition();
|
|
if (disposition != null)
|
|
disposition = disposition.toLowerCase(Locale.ROOT);
|
|
} catch (MessagingException ex) {
|
|
Log.w(ex);
|
|
parts.warnings.add(Helper.formatThrowable(ex, false));
|
|
disposition = null;
|
|
}
|
|
|
|
String filename;
|
|
try {
|
|
filename = part.getFileName();
|
|
if (filename != null)
|
|
filename = decodeMime(filename);
|
|
} catch (MessagingException ex) {
|
|
Log.w(ex);
|
|
parts.warnings.add(Helper.formatThrowable(ex, false));
|
|
filename = null;
|
|
}
|
|
|
|
ContentType contentType;
|
|
try {
|
|
String c = part.getContentType();
|
|
contentType = new ContentType(c == null ? "" : c);
|
|
} catch (ParseException ex) {
|
|
Log.w(ex);
|
|
parts.warnings.add(Helper.formatThrowable(ex, false));
|
|
|
|
if (part instanceof MimeMessage)
|
|
contentType = new ContentType("text/html");
|
|
else
|
|
contentType = new ContentType(Helper.guessMimeType(filename));
|
|
}
|
|
|
|
if (!Part.ATTACHMENT.equalsIgnoreCase(disposition) &&
|
|
TextUtils.isEmpty(filename) &&
|
|
((parts.plain == null && "text/plain".equalsIgnoreCase(contentType.getBaseType())) ||
|
|
(parts.html == null && "text/html".equalsIgnoreCase(contentType.getBaseType())))) {
|
|
if ("text/html".equalsIgnoreCase(contentType.getBaseType()))
|
|
parts.html = part;
|
|
else
|
|
parts.plain = part;
|
|
} else {
|
|
AttachmentPart apart = new AttachmentPart();
|
|
apart.disposition = disposition;
|
|
apart.filename = filename;
|
|
apart.encrypt = encrypt;
|
|
apart.part = part;
|
|
|
|
String[] cid = null;
|
|
try {
|
|
cid = apart.part.getHeader("Content-ID");
|
|
} catch (MessagingException ex) {
|
|
Log.w(ex);
|
|
if (!"Failed to fetch headers".equals(ex.getMessage()))
|
|
parts.warnings.add(Helper.formatThrowable(ex, false));
|
|
}
|
|
|
|
apart.attachment = new EntityAttachment();
|
|
apart.attachment.disposition = apart.disposition;
|
|
apart.attachment.name = apart.filename;
|
|
apart.attachment.type = contentType.getBaseType().toLowerCase(Locale.ROOT);
|
|
apart.attachment.size = (long) apart.part.getSize();
|
|
apart.attachment.cid = (cid == null || cid.length == 0 ? null : MimeUtility.unfold(cid[0]));
|
|
apart.attachment.encryption = apart.encrypt;
|
|
|
|
if ("text/calendar".equalsIgnoreCase(apart.attachment.type) &&
|
|
TextUtils.isEmpty(apart.attachment.name))
|
|
apart.attachment.name = "invite.ics";
|
|
|
|
if (apart.attachment.size <= 0)
|
|
apart.attachment.size = null;
|
|
|
|
// https://tools.ietf.org/html/rfc2392
|
|
if (apart.attachment.cid != null) {
|
|
if (!apart.attachment.cid.startsWith("<"))
|
|
apart.attachment.cid = "<" + apart.attachment.cid;
|
|
if (!apart.attachment.cid.endsWith(">"))
|
|
apart.attachment.cid += ">";
|
|
}
|
|
|
|
parts.attachments.add(apart);
|
|
}
|
|
}
|
|
} catch (FolderClosedException ex) {
|
|
throw ex;
|
|
} catch (MessagingException ex) {
|
|
Log.w(ex);
|
|
parts.warnings.add(Helper.formatThrowable(ex, false));
|
|
}
|
|
}
|
|
|
|
static String sanitizeKeyword(String keyword) {
|
|
// https://tools.ietf.org/html/rfc3501
|
|
StringBuilder sb = new StringBuilder();
|
|
for (int i = 0; i < keyword.length(); i++) {
|
|
// flag-keyword = atom
|
|
// atom = 1*ATOM-CHAR
|
|
// ATOM-CHAR = <any CHAR except atom-specials>
|
|
char kar = keyword.charAt(i);
|
|
// atom-specials = "(" / ")" / "{" / SP / CTL / list-wildcards / quoted-specials / resp-specials
|
|
if (kar == '(' || kar == ')' || kar == '{' || kar == ' ' || Character.isISOControl(kar))
|
|
continue;
|
|
// list-wildcards = "%" / "*"
|
|
if (kar == '%' || kar == '*')
|
|
continue;
|
|
// quoted-specials = DQUOTE / "\"
|
|
if (kar == '"' || kar == '\\')
|
|
continue;
|
|
// resp-specials = "]"
|
|
if (kar == ']')
|
|
continue;
|
|
sb.append(kar);
|
|
}
|
|
return sb.toString();
|
|
}
|
|
|
|
static boolean equalEmail(Address a1, Address a2) {
|
|
String email1 = ((InternetAddress) a1).getAddress();
|
|
String email2 = ((InternetAddress) a2).getAddress();
|
|
if (email1 != null)
|
|
email1 = email1.toLowerCase();
|
|
if (email2 != null)
|
|
email2 = email2.toLowerCase();
|
|
return Objects.equals(email1, email2);
|
|
}
|
|
|
|
static boolean equal(Address[] a1, Address[] a2) {
|
|
if (a1 == null && a2 == null)
|
|
return true;
|
|
|
|
if (a1 == null || a2 == null)
|
|
return false;
|
|
|
|
if (a1.length != a2.length)
|
|
return false;
|
|
|
|
for (int i = 0; i < a1.length; i++)
|
|
if (!a1[i].toString().equals(a2[i].toString()))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
}
|