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https://github.com/M66B/FairEmail.git
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First public release
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M66B
282
app/src/main/java/eu/faircode/email/MessageHelper.java
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282
app/src/main/java/eu/faircode/email/MessageHelper.java
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package eu.faircode.email;
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/*
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This file is part of Safe email.
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Safe email 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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NetGuard 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 NetGuard. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2018 by Marcel Bokhorst (M66B)
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*/
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import android.text.TextUtils;
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import android.util.Base64;
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import android.util.Log;
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import org.json.JSONArray;
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import org.json.JSONException;
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import org.json.JSONObject;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.ArrayList;
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import java.util.Date;
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import java.util.List;
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import java.util.Properties;
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import javax.mail.Address;
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import javax.mail.Flags;
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import javax.mail.Message;
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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.InternetAddress;
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import javax.mail.internet.MimeMessage;
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public class MessageHelper {
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private MimeMessage imessage;
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private String raw = null;
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static Properties getSessionProperties() {
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Properties props = new Properties();
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// https://javaee.github.io/javamail/docs/api/com/sun/mail/imap/package-summary.html#properties
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props.put("mail.imaps.ssl.checkserveridentity", "true");
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props.put("mail.imaps.ssl.trust", "*");
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props.put("mail.imaps.starttls.enable", "false");
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props.put("mail.imaps.timeout", "20000");
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props.put("mail.imaps.connectiontimeout", "20000");
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// https://javaee.github.io/javamail/docs/api/com/sun/mail/smtp/package-summary.html#properties
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props.put("mail.smtps.ssl.checkserveridentity", "true");
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props.put("mail.smtps.ssl.trust", "*");
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props.put("mail.smtps.starttls.enable", "false");
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props.put("mail.smtps.starttls.required", "false");
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props.put("mail.smtps.auth", "true");
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props.put("mail.smtps.timeout", "20000");
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props.put("mail.smtps.connectiontimeout", "20000");
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props.put("mail.smtp.ssl.checkserveridentity", "true");
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props.put("mail.smtp.ssl.trust", "*");
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props.put("mail.smtp.starttls.enable", "true");
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props.put("mail.smtp.starttls.required", "true");
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props.put("mail.smtp.auth", "true");
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props.put("mail.smtp.timeout", "20000");
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props.put("mail.smtp.connectiontimeout", "20000");
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return props;
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}
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static MimeMessage from(EntityMessage message, Session isession) throws MessagingException {
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MimeMessage imessage = new MimeMessage(isession);
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if (message.from != null)
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imessage.setFrom(MessageHelper.decodeAddresses(message.from)[0]);
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if (message.to != null)
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imessage.setRecipients(Message.RecipientType.TO, MessageHelper.decodeAddresses(message.to));
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if (message.cc != null)
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imessage.setRecipients(Message.RecipientType.CC, MessageHelper.decodeAddresses(message.to));
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if (message.subject != null)
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imessage.setSubject(message.subject);
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if (message.body != null)
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imessage.setText(message.body, null, "html");
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imessage.setSentDate(new Date());
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return imessage;
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}
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static MimeMessage from(EntityMessage message, EntityMessage reply, Session isession) throws MessagingException {
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MimeMessage imessage = from(message, isession);
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imessage.addHeader("In-Reply-To", reply.msgid);
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imessage.addHeader("References", (reply.references == null ? "" : reply.references + " ") + reply.msgid);
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return imessage;
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}
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MessageHelper(MimeMessage message) {
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this.imessage = message;
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}
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MessageHelper(String raw, Session isession) throws MessagingException {
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byte[] bytes = Base64.decode(raw, Base64.URL_SAFE);
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InputStream is = new ByteArrayInputStream(bytes);
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this.imessage = new MimeMessage(isession, is);
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}
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String getMessageID() throws MessagingException {
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return imessage.getHeader("Message-ID", null);
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}
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String[] getReferences() throws MessagingException {
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String refs = imessage.getHeader("References", null);
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return (refs == null ? new String[0] : refs.split("\\s+"));
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}
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String getInReplyTo() throws MessagingException {
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return imessage.getHeader("In-Reply-To", null);
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}
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String getThreadId(long uid) throws MessagingException {
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for (String ref : getReferences())
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if (!TextUtils.isEmpty(ref))
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return ref;
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String msgid = getMessageID();
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return (TextUtils.isEmpty(msgid) ? Long.toString(uid) : msgid);
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}
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String getFrom() throws MessagingException, JSONException {
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return encodeAddresses(imessage.getFrom());
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}
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String getTo() throws MessagingException, JSONException {
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return encodeAddresses(imessage.getRecipients(Message.RecipientType.TO));
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}
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String getCc() throws MessagingException, JSONException {
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return encodeAddresses(imessage.getRecipients(Message.RecipientType.CC));
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}
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String getReply() throws MessagingException, JSONException {
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return encodeAddresses(imessage.getReplyTo());
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}
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static String encodeAddresses(Address[] addresses) throws JSONException {
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JSONArray jaddresses = new JSONArray();
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if (addresses != null)
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for (Address address : addresses)
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if (address instanceof InternetAddress) {
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String a = ((InternetAddress) address).getAddress();
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String p = ((InternetAddress) address).getPersonal();
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JSONObject jaddress = new JSONObject();
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if (a != null)
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jaddress.put("address", a);
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if (p != null)
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jaddress.put("personal", p);
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jaddresses.put(jaddress);
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}
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return jaddresses.toString();
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}
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static Address[] decodeAddresses(String json) {
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List<Address> result = new ArrayList<>();
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try {
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JSONArray jaddresses = new JSONArray(json);
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for (int i = 0; i < jaddresses.length(); i++) {
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JSONObject jaddress = (JSONObject) jaddresses.get(i);
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if (jaddress.has("personal"))
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result.add(new InternetAddress(
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jaddress.getString("address"),
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jaddress.getString("personal")));
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else
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result.add(new InternetAddress(
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jaddress.getString("address")));
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}
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} catch (Throwable ex) {
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Log.e(Helper.TAG, ex + "\n" + Log.getStackTraceString(ex));
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}
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return result.toArray(new Address[0]);
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}
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String getHtml() throws MessagingException {
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return getHtml(imessage);
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}
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static String getFormattedAddresses(String json) {
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try {
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List<String> addresses = new ArrayList<>();
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for (Address address : decodeAddresses(json))
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if (address instanceof InternetAddress) {
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InternetAddress a = (InternetAddress) address;
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String personal = a.getPersonal();
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if (TextUtils.isEmpty(personal))
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addresses.add(address.toString());
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else
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addresses.add(personal);
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} else
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addresses.add(address.toString());
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return TextUtils.join(", ", addresses);
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} catch (Throwable ex) {
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return ex.getMessage();
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}
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}
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private String getHtml(Part part) throws MessagingException {
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if (part.isMimeType("text/*"))
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try {
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String s = (String) part.getContent();
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if (part.isMimeType("text/plain"))
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s = "<pre>" + s.replaceAll("\\r?\\n", "<br />") + "</pre>";
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return s;
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} catch (IOException ex) {
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Log.w(Helper.TAG, ex + "\n" + Log.getStackTraceString(ex));
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return null;
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}
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if (part.isMimeType("multipart/alternative")) {
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String text = null;
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try {
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Multipart mp = (Multipart) part.getContent();
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for (int i = 0; i < mp.getCount(); i++) {
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Part bp = mp.getBodyPart(i);
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if (bp.isMimeType("text/plain")) {
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if (text == null)
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text = getHtml(bp);
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} else if (bp.isMimeType("text/html")) {
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String s = getHtml(bp);
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if (s != null)
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return s;
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} else
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return getHtml(bp);
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}
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} catch (IOException ex) {
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Log.w(Helper.TAG, ex + "\n" + Log.getStackTraceString(ex));
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}
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return text;
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}
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if (part.isMimeType("multipart/*")) {
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try {
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Multipart mp = (Multipart) part.getContent();
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for (int i = 0; i < mp.getCount(); i++) {
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String s = getHtml(mp.getBodyPart(i));
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if (s != null)
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return s;
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}
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} catch (IOException ex) {
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Log.w(Helper.TAG, ex + "\n" + Log.getStackTraceString(ex));
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}
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}
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return null;
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}
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boolean getSeen() throws MessagingException {
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return imessage.isSet(Flags.Flag.SEEN);
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}
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String getRaw() throws IOException, MessagingException {
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if (raw == null) {
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ByteArrayOutputStream os = new ByteArrayOutputStream();
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imessage.writeTo(os);
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raw = Base64.encodeToString(os.toByteArray(), Base64.URL_SAFE);
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}
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return raw;
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}
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}
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