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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
imapclient/cmds.go
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@ -59,9 +59,9 @@ func (c *Conn) Login(username, password string) (untagged []Untagged, result Res
c.LastTag = c.nextTag()
fmt.Fprintf(c.xbw, "%s login %s ", c.LastTag, astring(username))
defer c.xtrace(mlog.LevelTraceauth)()
defer c.xtracewrite(mlog.LevelTraceauth)()
fmt.Fprintf(c.xbw, "%s\r\n", astring(password))
c.xtrace(mlog.LevelTrace) // Restore.
c.xtracewrite(mlog.LevelTrace) // Restore.
return c.Response()
}
@ -76,11 +76,11 @@ func (c *Conn) AuthenticatePlain(username, password string) (untagged []Untagged
if result.Status != "" {
c.xerrorf("got result status %q, expected continuation", result.Status)
}
defer c.xtrace(mlog.LevelTraceauth)()
defer c.xtracewrite(mlog.LevelTraceauth)()
xw := base64.NewEncoder(base64.StdEncoding, c.xbw)
fmt.Fprintf(xw, "\u0000%s\u0000%s", username, password)
xw.Close()
c.xtrace(mlog.LevelTrace) // Restore.
c.xtracewrite(mlog.LevelTrace) // Restore.
fmt.Fprintf(c.xbw, "\r\n")
c.xflush()
return c.Response()
@ -317,10 +317,10 @@ func (c *Conn) Append(mailbox string, message Append, more ...Append) (untagged
// todo: for larger messages, use a synchronizing literal.
fmt.Fprintf(c.xbw, " (%s)%s {%d+}\r\n", strings.Join(m.Flags, " "), date, m.Size)
defer c.xtrace(mlog.LevelTracedata)()
defer c.xtracewrite(mlog.LevelTracedata)()
_, err := io.Copy(c.xbw, m.Data)
c.xcheckf(err, "write message data")
c.xtrace(mlog.LevelTrace) // Restore
c.xtracewrite(mlog.LevelTrace) // Restore
}
fmt.Fprintf(c.xbw, "\r\n")
@ -328,7 +328,8 @@ func (c *Conn) Append(mailbox string, message Append, more ...Append) (untagged
return c.Response()
}
// note: No idle command. Idle is better implemented by writing the request and reading and handling the responses as they come in.
// note: No Idle or Notify command. Idle/Notify is better implemented by
// writing the request and reading and handling the responses as they come in.
// CloseMailbox closes the currently selected/active mailbox, permanently removing
// any messages marked with \Deleted.
@ -444,10 +445,10 @@ func (c *Conn) replace(cmd string, num string, mailbox string, msg Append) (unta
err := c.Commandf("", "%s %s %s (%s)%s ~{%d+}", cmd, num, astring(mailbox), strings.Join(msg.Flags, " "), date, msg.Size)
c.xcheckf(err, "writing replace command")
defer c.xtrace(mlog.LevelTracedata)()
defer c.xtracewrite(mlog.LevelTracedata)()
_, err = io.Copy(c.xbw, msg.Data)
c.xcheckf(err, "write message data")
c.xtrace(mlog.LevelTrace)
c.xtracewrite(mlog.LevelTrace)
fmt.Fprintf(c.xbw, "\r\n")
c.xflush()