eventmanager: add password notification check action

this action allow to send an email notification to users whose
password is about to expire

Signed-off-by: Nicola Murino <nicola.murino@gmail.com>

templates/email/password-expiration.html

@@ -0,0 +1,19 @@
+<!--
+Copyright (C) 2019-2022  Nicola Murino
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License as published
+by the Free Software Foundation, version 3.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+-->
+Hi {{.Username}},
+<br>
+<p>Your SFTPGo password {{if le .Days 0}}has expired{{else}}expires in {{.Days}} {{if eq .Days 1}}day{{else}}days{{end}}{{end}}.</p>
+<p>Please login to the WebClient and set a new password.</p>

templates/webadmin/eventaction.html

@@ -74,6 +74,17 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
                 </div>
             </div>
 
+            <div class="form-group row action-type action-pwd-expiration">
+                <label for="idPwdExpirationThreshold" class="col-sm-2 col-form-label">Threshold</label>
+                <div class="col-sm-10">
+                    <input type="number" min="1" class="form-control" id="idPwdExpirationThreshold" name="pwd_expiration_threshold" placeholder=""
+                        aria-describedby="PwdExpirationThresholdHelpBlock" value="{{.Action.Options.PwdExpirationConfig.Threshold}}">
+                    <small id="PwdExpirationThresholdHelpBlock" class="form-text text-muted">
+                        An email notification will be generated for users whose password expires in a number of days less than or equal to this threshold.
+                    </small>
+                </div>
+            </div>
+
             <div class="form-group row action-type action-http">
                 <label for="idHTTPEndpoint" class="col-sm-2 col-form-label">Endpoint</label>
                 <div class="col-sm-10">
@@ -916,26 +927,24 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
         $('.action-type').hide();
         switch (val) {
             case '1':
-            case 1:
                 $('.action-http').show();
                 break;
             case '2':
-            case 2:
                 $('.action-cmd').show();
                 break;
             case '3':
-            case 3:
                 $('.action-smtp').show();
                 break;
             case '8':
-            case 8:
                 $('.action-dataretention').show();
                 break;
             case '9':
-            case 9:
                 $('.action-fs').show();
                 onFsActionChanged($("#idFsActionType").val());
                 break;
+            case '11':
+                $('.action-pwd-expiration').show();
+                break;
         }
     }
 
@@ -943,23 +952,18 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
         $('.action-fs-type').hide();
         switch (val) {
             case '1':
-            case 1:
                 $('.action-fs-rename').show();
                 break;
             case '2':
-            case 2:
                 $('.action-fs-delete').show();
                 break;
             case '3':
-            case 3:
                 $('.action-fs-mkdir').show();
                 break;
             case '4':
-            case 4:
                 $('.action-fs-exist').show();
                 break;
             case '5':
-            case 5:
                 $('.action-fs-compress').show();
                 break;
         }