Prepare custom IMAP folder/message implementation

2026-03-30 21:58:52 +02:00 · 2022-03-23 22:17:11 +01:00
parent 4905d2ff0e
commit 632a82a870
3 changed files with 246 additions and 0 deletions
--- a/app/src/main/java/eu/faircode/email/IMAPMessageEx.java
+++ b/app/src/main/java/eu/faircode/email/IMAPMessageEx.java
@@ -0,0 +1,76 @@
+package eu.faircode.email;
+
+/*
+    This file is part of FairEmail.
+
+    FairEmail is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    FairEmail is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with FairEmail.  If not, see <http://www.gnu.org/licenses/>.
+
+    Copyright 2018-2022 by Marcel Bokhorst (M66B)
+*/
+
+import com.sun.mail.iap.ConnectionException;
+import com.sun.mail.iap.ProtocolException;
+import com.sun.mail.iap.Response;
+import com.sun.mail.imap.IMAPFolder;
+import com.sun.mail.imap.IMAPMessage;
+import com.sun.mail.imap.protocol.IMAPProtocol;
+import com.sun.mail.imap.protocol.UID;
+
+import javax.mail.Flags;
+import javax.mail.FolderClosedException;
+import javax.mail.MessagingException;
+import javax.mail.Session;
+
+public class IMAPMessageEx extends IMAPMessage {
+    protected IMAPMessageEx(IMAPFolder folder, int msgnum) {
+        super(folder, msgnum);
+    }
+
+    protected IMAPMessageEx(Session session) {
+        super(session);
+    }
+
+    @Override
+    public synchronized void setFlags(Flags flag, boolean set) throws MessagingException {
+        synchronized (getMessageCacheLock()) {
+            try {
+                IMAPProtocol p = getProtocol();
+                checkExpunged(); // Insure that this message is not expunged
+                if (p.hasCapability("X-UIDONLY") ||
+                        "imap.mail.yahoo.co.jp".equals(p.getInetAddress().getHostName()) ||
+                        (p.hasCapability("UIDPLUS") &&
+                                Boolean.parseBoolean(System.getProperty("fairemail.uid_command")))) {
+                    // Verizon
+                    // Yahoo: NO [CANNOT] STORE It's not possible to perform specified operation
+                    long uid = getUID();
+                    if (uid < 0) {
+                        UID u = p.fetchUID(getSequenceNumber());
+                        if (u != null)
+                            uid = u.uid;
+                    }
+                    Response[] r = p.command("UID STORE " + uid +
+                            " " + (set ? '+' : '-') + "FLAGS " + p.createFlagList(new Flags(flag)), null);
+                    p.notifyResponseHandlers(r);
+                    p.handleResult(r[r.length - 1]);
+                    return;
+                }
+                p.storeFlags(getSequenceNumber(), flag, set);
+            } catch (ConnectionException cex) {
+                throw new FolderClosedException(folder, cex.getMessage());
+            } catch (ProtocolException pex) {
+                throw new MessagingException(pex.getMessage(), pex);
+            }
+        }
+    }
+}