HCX-47 Fix MailSender usage without auth

CHANGELOG.md

@@ -22,6 +22,7 @@ v1.4.2 [unreleased]
 -   [#26](https://github.com/latera/camunda-ext/pull/26) Fix passing appCode into hid.Hydra#mainInit method
 -   [#34](https://github.com/latera/camunda-ext/pull/34) Search settlement accounts for base subjects, not personal ones
 -   [#41](https://github.com/latera/camunda-ext/pull/41) Use http-builder-ng-okhttp with PATCH requests support
+-   [#42](https://github.com/latera/camunda-ext/pull/42) Fix MailSender usage without auth
 
 v1.4.1 [2020-02-14]
 -------------------

src/org/camunda/latera/bss/connectors/MailSender.groovy

@@ -18,6 +18,7 @@ import static org.camunda.latera.bss.utils.ListUtil.firstNotNull
 class MailSender implements AutoCloseable {
   private String     host
   private Integer    port
+  private Boolean    auth
   private String     user
   private String     password
   private Session    session
@@ -34,7 +35,7 @@ class MailSender implements AutoCloseable {
     this.user      =  execution.getVariable('smtpUser')     ?: ENV['SMTP_USER']
     this.password  =  execution.getVariable('smtpPassword') ?: ENV['SMTP_PASSWORD']
 
-    Boolean auth = Boolean.valueOf(firstNotNull([
+    this.auth = Boolean.valueOf(firstNotNull([
       execution.getVariable('smtpAuth'),
       ENV['SMTP_AUTH'],
       true
@@ -55,14 +56,18 @@ class MailSender implements AutoCloseable {
     this.props = System.getProperties()
     this.props.put('mail.smtp.host',     host)
     this.props.put('mail.smtp.port',     port)
-    this.props.put('mail.smtp.user',     user)
-    this.props.put('mail.smtp.password', password)
     this.props.put('mail.smtp.auth',     auth)
     this.props.put('mail.mime.encodefilename', true)
 
+    if (this.auth) {
+      this.props.put('mail.smtp.user',     user)
+      this.props.put('mail.smtp.password', password)
+    }
+
     if (tls) {
       this.props.put('mail.smtp.starttls.enable', tls.toString()) // DO NOT REMOVE toString() here !!!
     }
+
     if (ssl) {
       this.props.put('mail.smtp.ssl.trust', ssl)
     } else if (tls) {
@@ -79,16 +84,21 @@ class MailSender implements AutoCloseable {
       if (isEmpty(this.host)) {
         throw new Exception("Empty host name!")
       }
+
       if (isEmpty(this.port)) {
         throw new Exception("Empty port number!")
       }
-      if (isEmpty(this.user)) {
-        throw new Exception("Empty user name!")
-      }
-      if (isEmpty(this.password)) {
-        throw new Exception("Empty password!")
+
+      if (this.auth) {
+        if (isEmpty(this.user)) {
+          throw new Exception("Empty user name!")
+        }
+        if (isEmpty(this.password)) {
+          throw new Exception("Empty password!")
+        }
       }
-      this.transport.connect(this.host, this.port, this.user, this.password)
+
+      this.transport.connect()
     }
     return this
   }