imapserver: implement NOTIFY extension from RFC 5465

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

View File

@ -42,6 +42,7 @@ const (
CapReplace Capability = "REPLACE" // ../rfc/8508:155
CapPreview Capability = "PREVIEW" // ../rfc/8970:114
CapMultiSearch Capability = "MULTISEARCH" // ../rfc/7377:187
CapNotify Capability = "NOTIFY" // ../rfc/5465:195
)
// Status is the tagged final result of a command.
@ -186,6 +187,14 @@ func (c CodeInProgress) CodeString() string {
return fmt.Sprintf("INPROGRESS (%q %s %s)", c.Tag, current, goal)
}
// "BADEVENT" response code, with the events that are supported, for the NOTIFY
// extension.
type CodeBadEvent []string
func (c CodeBadEvent) CodeString() string {
return fmt.Sprintf("BADEVENT (%s)", strings.Join([]string(c), " "))
}
// RespText represents a response line minus the leading tag.
type RespText struct {
Code string // The first word between [] after the status.