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373 lines
15 KiB
373 lines
15 KiB
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.content.SharedPreferences;
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import android.preference.PreferenceManager;
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import com.sun.mail.iap.Argument;
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import com.sun.mail.iap.Response;
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import com.sun.mail.imap.IMAPFolder;
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import com.sun.mail.imap.IMAPMessage;
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import com.sun.mail.imap.IMAPStore;
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import com.sun.mail.imap.protocol.IMAPProtocol;
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import com.sun.mail.imap.protocol.IMAPResponse;
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import java.io.IOException;
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import java.text.Normalizer;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.List;
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import java.util.Properties;
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import javax.mail.FetchProfile;
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import javax.mail.Flags;
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import javax.mail.Folder;
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import javax.mail.FolderClosedException;
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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.Session;
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import javax.mail.UIDFolder;
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import javax.mail.search.BodyTerm;
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import javax.mail.search.FlagTerm;
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import javax.mail.search.FromStringTerm;
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import javax.mail.search.OrTerm;
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import javax.mail.search.RecipientStringTerm;
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import javax.mail.search.SearchTerm;
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import javax.mail.search.SubjectTerm;
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import androidx.lifecycle.ViewModel;
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public class ViewModelBrowse extends ViewModel {
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private State currentState = null;
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private class State {
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private Context context;
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private Long fid;
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private String search;
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private int pageSize;
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int local = 0;
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List<Long> messages = null;
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IMAPStore istore = null;
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IMAPFolder ifolder = null;
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Message[] imessages = null;
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int index = -1;
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boolean error = false;
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}
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void set(Context context, long folder, String search, int pageSize) {
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currentState = new State();
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currentState.context = context;
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currentState.fid = (folder < 0 ? null : folder);
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currentState.search = search;
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currentState.pageSize = pageSize;
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currentState.index = -1;
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currentState.error = false;
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}
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int load() throws MessagingException, IOException {
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final State state = currentState;
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if (state == null || state.error)
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return 0;
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DB db = DB.getInstance(state.context);
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int local = 0;
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if (state.search != null)
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try {
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db.beginTransaction();
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if (state.messages == null) {
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state.messages = db.message().getMessageIdsByFolder(state.fid);
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Log.i("Boundary search folder=" + state.fid + " messages=" + state.messages.size());
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}
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for (int i = state.local; i < state.messages.size() && local < state.pageSize; i++) {
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state.local = i + 1;
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boolean match = false;
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String find = state.search.toLowerCase();
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EntityMessage message = db.message().getMessage(state.messages.get(i));
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String body = null;
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if (message.content)
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try {
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body = Helper.readText(EntityMessage.getFile(state.context, message.id));
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} catch (IOException ex) {
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Log.e(ex);
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}
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if (message.from != null)
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for (int j = 0; j < message.from.length && !match; j++)
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match = message.from[j].toString().toLowerCase().contains(find);
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if (message.to != null)
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for (int j = 0; j < message.to.length && !match; j++)
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match = message.to[j].toString().toLowerCase().contains(find);
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if (message.subject != null && !match)
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match = message.subject.toLowerCase().contains(find);
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if (!match && message.content)
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match = body.toLowerCase().contains(find);
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if (match) {
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local++;
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db.message().setMessageFound(message.account, message.thread);
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}
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}
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db.setTransactionSuccessful();
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if (local == state.pageSize)
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return local;
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} finally {
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db.endTransaction();
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}
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if (state.fid == null)
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return local;
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final EntityFolder folder = db.folder().getBrowsableFolder(state.fid, state.search != null);
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if (folder == null)
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return local;
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if (state.imessages == null) {
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EntityAccount account = db.account().getAccount(folder.account);
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try {
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// Check connectivity
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if (!Helper.suitableNetwork(state.context, false))
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throw new IllegalArgumentException(state.context.getString(R.string.title_no_internet));
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SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(state.context);
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boolean debug = (prefs.getBoolean("debug", false) || BuildConfig.BETA_RELEASE);
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String protocol = account.getProtocol();
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// Get properties
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Properties props = MessageHelper.getSessionProperties(account.auth_type, account.realm, account.insecure);
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props.put("mail." + protocol + ".separatestoreconnection", "true");
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// Create session
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Session isession = Session.getInstance(props, null);
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isession.setDebug(debug);
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Log.i("Boundary connecting account=" + account.name);
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state.istore = (IMAPStore) isession.getStore(protocol);
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Helper.connect(state.context, state.istore, account);
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Log.i("Boundary opening folder=" + folder.name);
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state.ifolder = (IMAPFolder) state.istore.getFolder(folder.name);
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state.ifolder.open(Folder.READ_WRITE);
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Log.i("Boundary searching=" + state.search);
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if (state.search == null)
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state.imessages = state.ifolder.getMessages();
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else {
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Object result = state.ifolder.doCommand(new IMAPFolder.ProtocolCommand() {
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@Override
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public Object doCommand(IMAPProtocol protocol) {
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// Yahoo! does not support keyword search, but uses the flags $Forwarded $Junk $NotJunk
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boolean keywords = false;
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for (String keyword : folder.keywords)
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if (!keyword.startsWith("$")) {
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keywords = true;
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break;
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}
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try {
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// https://tools.ietf.org/html/rfc3501#section-6.4.4
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Log.i("Boundary UTF8 search=" + state.search);
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Argument arg = new Argument();
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if (!protocol.supportsUtf8()) {
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arg.writeAtom("CHARSET");
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arg.writeAtom("UTF-8");
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}
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if (keywords)
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arg.writeAtom("OR");
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arg.writeAtom("OR");
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arg.writeAtom("OR");
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arg.writeAtom("OR");
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arg.writeAtom("FROM");
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arg.writeBytes(state.search.getBytes());
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arg.writeAtom("TO");
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arg.writeBytes(state.search.getBytes());
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arg.writeAtom("SUBJECT");
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arg.writeBytes(state.search.getBytes());
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arg.writeAtom("BODY");
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arg.writeBytes(state.search.getBytes());
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if (keywords) {
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arg.writeAtom("KEYWORD");
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arg.writeBytes(state.search.getBytes());
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}
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Response[] responses = protocol.command("SEARCH", arg);
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List<Integer> msgnums = new ArrayList<>();
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for (Response response : responses)
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if (response.isOK())
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Log.i(folder.name + " response=" + response);
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else if (((IMAPResponse) response).keyEquals("SEARCH")) {
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int msgnum;
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while ((msgnum = response.readNumber()) != -1)
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msgnums.add(msgnum);
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} else {
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Log.w(folder.name + " response=" + response);
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// Assume no UTF-8 support
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String search = state.search.replace("ß", "ss"); // Eszett
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search = Normalizer.normalize(search, Normalizer.Form.NFD)
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.replaceAll("[^\\p{ASCII}]", "");
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Log.i("Boundary ASCII search=" + search);
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SearchTerm term = new OrTerm(
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new OrTerm(
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new FromStringTerm(search),
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new RecipientStringTerm(Message.RecipientType.TO, search)
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),
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new OrTerm(
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new SubjectTerm(search),
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new BodyTerm(search)
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)
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);
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if (keywords)
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term = new OrTerm(term, new FlagTerm(
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new Flags(Helper.sanitizeKeyword(search)), true));
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return state.ifolder.search(term);
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}
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Message[] imessages = new Message[msgnums.size()];
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for (int i = 0; i < msgnums.size(); i++)
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imessages[i] = state.ifolder.getMessage(msgnums.get(i));
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return imessages;
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} catch (MessagingException ex) {
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Log.e(ex);
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return ex;
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}
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}
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});
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if (result instanceof MessagingException)
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throw (MessagingException) result;
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state.imessages = (Message[]) result;
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}
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Log.i("Boundary found messages=" + state.imessages.length);
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state.index = state.imessages.length - 1;
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} catch (Throwable ex) {
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state.error = true;
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if (ex instanceof FolderClosedException)
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Log.w("Search", ex);
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else {
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Log.e("Search", ex);
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throw ex;
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}
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}
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}
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int remote = 0;
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while (state.index >= 0 && remote < state.pageSize && currentState != null) {
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Log.i("Boundary index=" + state.index);
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int from = Math.max(0, state.index - (state.pageSize - remote) + 1);
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Message[] isub = Arrays.copyOfRange(state.imessages, from, state.index + 1);
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state.index -= (state.pageSize - remote);
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FetchProfile fp = new FetchProfile();
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fp.add(FetchProfile.Item.ENVELOPE);
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fp.add(FetchProfile.Item.FLAGS);
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fp.add(FetchProfile.Item.CONTENT_INFO); // body structure
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fp.add(UIDFolder.FetchProfileItem.UID);
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fp.add(IMAPFolder.FetchProfileItem.HEADERS);
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fp.add(FetchProfile.Item.SIZE);
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fp.add(IMAPFolder.FetchProfileItem.INTERNALDATE);
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state.ifolder.fetch(isub, fp);
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try {
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db.beginTransaction();
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for (int j = isub.length - 1; j >= 0; j--)
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try {
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long uid = state.ifolder.getUID(isub[j]);
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Log.i("Boundary sync uid=" + uid);
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EntityMessage message = db.message().getMessageByUid(folder.id, uid);
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if (message == null) {
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message = Core.synchronizeMessage(state.context,
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folder, state.ifolder, (IMAPMessage) isub[j],
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true,
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new ArrayList<EntityRule>());
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remote++;
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}
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db.message().setMessageFound(message.account, message.thread);
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} catch (MessageRemovedException ex) {
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Log.w(folder.name + " boundary", ex);
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} catch (FolderClosedException ex) {
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throw ex;
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} catch (IOException ex) {
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if (ex.getCause() instanceof MessagingException) {
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Log.w(folder.name + " boundary", ex);
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db.folder().setFolderError(folder.id, Helper.formatThrowable(ex, true));
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} else
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throw ex;
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} catch (Throwable ex) {
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Log.e(folder.name + " boundary", ex);
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db.folder().setFolderError(folder.id, Helper.formatThrowable(ex, true));
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} finally {
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((IMAPMessage) isub[j]).invalidateHeaders();
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}
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db.setTransactionSuccessful();
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} finally {
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db.endTransaction();
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}
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}
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Log.i("Boundary done");
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return local + remote;
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}
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void clear() {
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State state = currentState;
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if (state == null)
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return;
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currentState = null;
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Log.i("Boundary clear");
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try {
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if (state.istore != null)
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state.istore.close();
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} catch (Throwable ex) {
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Log.e("Boundary", ex);
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} finally {
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state.context = null;
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state.messages = null;
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state.istore = null;
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state.ifolder = null;
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state.imessages = null;
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}
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}
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}
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