Use mattermost v5 module (#1192)

vendor/github.com/mattermost/ldap/debug.go

@@ -0,0 +1,37 @@
+package ldap
+
+import (
+	"bytes"
+	"log"
+
+	ber "github.com/go-asn1-ber/asn1-ber"
+)
+
+const LDAP_TRACE_PREFIX = "ldap-trace: "
+
+// debugging type
+//     - has a Printf method to write the debug output
+type debugging bool
+
+// Enable controls debugging mode.
+func (debug *debugging) Enable(b bool) {
+	*debug = debugging(b)
+}
+
+// Printf writes debug output.
+func (debug debugging) Printf(format string, args ...interface{}) {
+	if debug {
+		format = LDAP_TRACE_PREFIX + format
+		log.Printf(format, args...)
+	}
+}
+
+// PrintPacket dumps a packet.
+func (debug debugging) PrintPacket(packet *ber.Packet) {
+	if debug {
+		var b bytes.Buffer
+		ber.WritePacket(&b, packet)
+		textToPrint := LDAP_TRACE_PREFIX + b.String()
+		log.Printf(textToPrint)
+	}
+}