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imapserver: implement NOTIFY extension from RFC 5465

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NOTIFY is like IDLE, but where IDLE watches just the selected mailbox, NOTIFY
can watch all mailboxes. With NOTIFY, a client can also ask a server to
immediately return configurable fetch attributes for new messages, e.g. a
message preview, certain header fields, or simply the entire message.

Mild testing with evolution and fairemail.
This commit is contained in:
Mechiel Lukkien
2025-04-07 23:21:03 +02:00
parent 5a7d5fce98
commit 8bab38eac4
30 changed files with 1926 additions and 161 deletions
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19
store/account.go
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@ -259,6 +259,13 @@ type MailboxCounts struct {
Size int64 // Number of bytes for all messages.
}
// MessageCountIMAP returns the total message count for use in IMAP. In IMAP,
// message marked \Deleted are included, in JMAP they those messages are not
// visible at all.
func (mc MailboxCounts) MessageCountIMAP() uint32 {
return uint32(mc.Total + mc.Deleted)
}
func (mc MailboxCounts) String() string {
return fmt.Sprintf("%d total, %d deleted, %d unread, %d unseen, size %d bytes", mc.Total, mc.Deleted, mc.Unread, mc.Unseen, mc.Size)
}
@ -601,13 +608,13 @@ func (m Message) MailboxCounts() (mc MailboxCounts) {
return
}
func (m Message) ChangeAddUID() ChangeAddUID {
return ChangeAddUID{m.MailboxID, m.UID, m.ModSeq, m.Flags, m.Keywords}
func (m Message) ChangeAddUID(mb Mailbox) ChangeAddUID {
return ChangeAddUID{m.MailboxID, m.UID, m.ModSeq, m.Flags, m.Keywords, mb.MessageCountIMAP(), uint32(mb.MailboxCounts.Unseen)}
}
func (m Message) ChangeFlags(orig Flags) ChangeFlags {
func (m Message) ChangeFlags(orig Flags, mb Mailbox) ChangeFlags {
mask := m.Flags.Changed(orig)
return ChangeFlags{MailboxID: m.MailboxID, UID: m.UID, ModSeq: m.ModSeq, Mask: mask, Flags: m.Flags, Keywords: m.Keywords}
return ChangeFlags{m.MailboxID, m.UID, m.ModSeq, mask, m.Flags, m.Keywords, mb.UIDValidity, uint32(mb.MailboxCounts.Unseen)}
}
func (m Message) ChangeThread() ChangeThread {
@ -2884,7 +2891,7 @@ func (a *Account) DeliverMailbox(log mlog.Log, mailbox string, m *Message, msgFi
}
changes = append(changes, chl...)
changes = append(changes, m.ChangeAddUID(), mb.ChangeCounts())
changes = append(changes, m.ChangeAddUID(mb), mb.ChangeCounts())
if nmbkeywords != len(mb.Keywords) {
changes = append(changes, mb.ChangeKeywords())
}
@ -2992,7 +2999,7 @@ func (a *Account) MessageRemove(log mlog.Log, tx *bstore.Tx, modseq ModSeq, mb *
}
}
return ChangeRemoveUIDs{mb.ID, uids, modseq, ids}, mb.ChangeCounts(), nil
return ChangeRemoveUIDs{mb.ID, uids, modseq, ids, mb.UIDNext, mb.MessageCountIMAP(), uint32(mb.MailboxCounts.Unseen)}, mb.ChangeCounts(), nil
}
// TidyRejectsMailbox removes old reject emails, and returns whether there is space for a new delivery.