update hotpatch server to have more descriptive text

tools/log4shell/main.go

@@ -122,7 +122,9 @@ func hotpatchCommand(c *cli.Context) error {
 
 	log.Info().
 		Msg("Starting Log4Shell hotpatch LDAP and payload servers")
-	log.Info().Msgf("Once both servers have started, use payload string: '${jndi:ldap://%s:1389/a}' to hotpatch", ip)
+	log.Info().
+		Msgf("Once both servers have started, use payload string: '%s' to hotpatch your servers.", payload)
+
 	hotpatchServer.Start()
 	hotpatchPayloadServer.Start()
 

tools/log4shell/patch/hotpatch.go

@@ -79,12 +79,22 @@ func (s *HotpatchLDAPServer) Stop() {
 func (s *HotpatchLDAPServer) createSearchResultEntry(req ldapmsg.SearchRequest) ldapmsg.SearchResultEntry {
 	resolvedJNDICodebase := ldapmsg.AttributeValue(s.payloadServerUrl)
 
+	payloadClassName := ldapmsg.AttributeValue("Log4ShellHotpatch")
+
+	payloadDescription := fmt.Sprintf(
+		"attempting to patch Log4Shell vulnerability with payload hosted on: %s/%s.class",
+		resolvedJNDICodebase,
+		payloadClassName,
+	)
+
+	classNameAttribute := ldapmsg.AttributeValue(payloadDescription)
+
 	e := ldapserver.NewSearchResultEntry("cn=log4shell-hotpatch, " + string(req.BaseObject()))
 	e.AddAttribute("cn", "log4shell-hotpatch")
-	e.AddAttribute("javaClassName", "attempting to patch Log4Shell vulnerability...")
+	e.AddAttribute("javaClassName", classNameAttribute)
 	e.AddAttribute("javaCodeBase", resolvedJNDICodebase)
 	e.AddAttribute("objectclass", "javaNamingReference")
-	e.AddAttribute("javaFactory", "Log4ShellHotpatch")
+	e.AddAttribute("javaFactory", payloadClassName)
 	return e
 }
 

tools/log4shell/util/http.go

@@ -25,7 +25,7 @@ func ParseHostAndPortFromUrlString(urlStr string) (host string, port int64, err
 		return
 	}
 
-	host = parsedUrl.Host
+	host = parsedUrl.Hostname()
 	port, err = strconv.ParseInt(parsedUrl.Port(), 10, 0)
 	return
 }