Added files.

imapserver/idle.go

@@ -0,0 +1,50 @@
+package imapserver
+
+import (
+	"fmt"
+	"io"
+	"runtime/debug"
+
+	"github.com/emersion/go-imap/v2"
+	"github.com/emersion/go-imap/v2/internal/imapwire"
+)
+
+func (c *Conn) handleIdle(dec *imapwire.Decoder) error {
+	if !dec.ExpectCRLF() {
+		return dec.Err()
+	}
+
+	if err := c.checkState(imap.ConnStateAuthenticated); err != nil {
+		return err
+	}
+
+	if err := c.writeContReq("idling"); err != nil {
+		return err
+	}
+
+	stop := make(chan struct{})
+	done := make(chan error, 1)
+	go func() {
+		defer func() {
+			if v := recover(); v != nil {
+				c.server.logger().Printf("panic idling: %v\n%s", v, debug.Stack())
+				done <- fmt.Errorf("imapserver: panic idling")
+			}
+		}()
+		w := &UpdateWriter{conn: c, allowExpunge: true}
+		done <- c.session.Idle(w, stop)
+	}()
+
+	c.setReadTimeout(idleReadTimeout)
+	line, isPrefix, err := c.br.ReadLine()
+	close(stop)
+	if err == io.EOF {
+		return nil
+	} else if err != nil {
+		return err
+	} else if isPrefix || string(line) != "DONE" {
+		return newClientBugError("Syntax error: expected DONE to end IDLE command")
+	}
+
+	return <-done
+}