Enigma: Add possibility to export private keys (#5321)

CHANGELOG

@@ -28,6 +28,7 @@ CHANGELOG Roundcube Webmail
 - Enigma: Fix keys import from inside of an encrypted message (#5285)
 - Enigma: Fix malformed signed messages with force_7bit=true (#5292)
 - Enigma: Add possibility to configure gpg binary location (enigma_pgp_binary)
+- Enigma: Add possibility to export private keys (#5321)
 - Fix searching by email address in contacts with multiple addresses (#5291)
 - Fix handling of --delete argument in moduserprefs.sh script (#5296)
 - Workaround PHP issue by calling closelog() on script shutdown when using log_driver=syslog (#5289)

plugins/enigma/enigma.js

@@ -150,12 +150,50 @@ rcube_webmail.prototype.enigma_delete = function()
 // Export key(s)
 rcube_webmail.prototype.enigma_export = function(selected)
 {
-    var keys = selected ? this.keys_list.get_selection().join(',') : '*';
+    var priv = false,
+        list = this.keys_list,
+        keys = selected ? list.get_selection().join(',') : '*',
+        args = {_a: 'export', _keys: keys};
 
     if (!keys.length)
         return;
 
-    this.goto_url('plugin.enigmakeys', {_a: 'export', _keys: keys}, false, true);
+    // find out wether selected keys are private
+    if (keys == '*')
+        priv = true;
+    else
+        $.each(list.get_selection(), function() {
+            flags = $(list.rows[this].obj).data('flags');
+            if (flags && flags.indexOf('p') >= 0) {
+                priv = true;
+                return false;
+            }
+        });
+
+    // ask the user about including private key in the export
+    if (priv)
+        return this.show_popup_dialog(
+            this.get_label('enigma.keyexportprompt'),
+            this.get_label('enigma.exportkeys'),
+            [{
+                text: this.get_label('enigma.onlypubkeys'),
+                click: function(e) {
+                    rcmail.goto_url('plugin.enigmakeys', args, false, true);
+                    $(this).remove();
+                }
+            },
+            {
+                text: this.get_label('enigma.withprivkeys'),
+                click: function(e) {
+                    args._priv = 1;
+                    rcmail.goto_url('plugin.enigmakeys', args, false, true);
+                    $(this).remove();
+                }
+            }],
+            {width: 400}
+        );
+
+    this.goto_url('plugin.enigmakeys', args, false, true);
 };
 
 // Submit key(s) import form
@@ -318,6 +356,7 @@ rcube_webmail.prototype.enigma_add_list_row = function(r)
 
     row.id = 'rcmrow' + r.id;
     row.className = css_class;
+    if (r.flags) $(row).data('flags', r.flags);
 
     col.innerHTML = r.name;
     row.appendChild(col);

plugins/enigma/lib/enigma_driver.php

@@ -88,10 +88,11 @@ abstract class enigma_driver
      * Key/Cert export.
      *
      * @param string Key ID
+     * @param bool   Include private key
      *
      * @return mixed Key content or enigma_error
      */
-    abstract function export($key);
+    abstract function export($key, $with_private = false);
 
     /**
      * Keys listing.

plugins/enigma/lib/enigma_driver_gnupg.php

@@ -215,13 +215,21 @@ class enigma_driver_gnupg extends enigma_driver
      * Key export.
      *
      * @param string Key ID
+     * @param bool   Include private key
      *
      * @return mixed Key content or enigma_error
      */
-    public function export($keyid)
+    public function export($keyid, $with_private = false)
     {
         try {
-            return $this->gpg->exportPublicKey($keyid, true);
+            $key = $this->gpg->exportPublicKey($keyid, true);
+
+            if ($with_private) {
+                $priv = $this->gpg->exportPrivateKey($keyid, true);
+                $key .= $priv;
+            }
+
+            return $key;
         }
         catch (Exception $e) {
             return $this->get_error_from_exception($e);

plugins/enigma/lib/enigma_driver_phpssl.php

@@ -126,6 +126,10 @@ class enigma_driver_phpssl extends enigma_driver
     {
     }
 
+    public function export($key, $with_private = false)
+    {
+    }
+
     public function list_keys($pattern='')
     {
     }

plugins/enigma/lib/enigma_engine.php

@@ -1126,13 +1126,14 @@ class enigma_engine
      *
      * @param string   Key ID
      * @param resource Optional output stream
+     * @param bool     Include private key
      *
      * @return mixed Key content or enigma_error
      */
-    function export_key($key, $fp = null)
+    function export_key($key, $fp = null, $include_private = false)
     {
         $this->load_pgp_driver();
-        $result = $this->pgp_driver->export($key, $fp);
+        $result = $this->pgp_driver->export($key, $include_private);
 
         if ($result instanceof enigma_error) {
             rcube::raise_error(array(

plugins/enigma/lib/enigma_key.php

@@ -93,6 +93,20 @@ class enigma_key
         return false;
     }
 
+    /**
+     * Returns true if any of subkeys is a private key
+     */
+    function is_private()
+    {
+        $now = time();
+
+        foreach ($this->subkeys as $subkey)
+            if ($subkey->has_private)
+                return true;
+
+        return false;
+    }
+
     /**
      * Get key ID by user email
      */

plugins/enigma/lib/enigma_ui.php

@@ -223,7 +223,9 @@ class enigma_ui
         $this->rc->output->include_script('list.js');
 
         // add some labels to client
-        $this->rc->output->add_label('enigma.keyremoveconfirm', 'enigma.keyremoving');
+        $this->rc->output->add_label('enigma.keyremoveconfirm', 'enigma.keyremoving',
+            'enigma.keyexportprompt', 'enigma.withprivkeys', 'enigma.onlypubkeys', 'enigma.exportkeys'
+        );
 
         return $out;
     }
@@ -259,8 +261,11 @@ class enigma_ui
 
             // Add rows
             foreach ($list as $key) {
-                $this->rc->output->command('enigma_add_list_row',
-                    array('name' => rcube::Q($key->name), 'id' => $key->id));
+                $this->rc->output->command('enigma_add_list_row', array(
+                        'name'  => rcube::Q($key->name),
+                        'id'    => $key->id,
+                        'flags' => $key->is_private() ? 'p' : ''
+                ));
             }
         }
 
@@ -462,6 +467,7 @@ class enigma_ui
         $this->rc->request_security_check(rcube_utils::INPUT_GET);
 
         $keys   = rcube_utils::get_input_value('_keys', rcube_utils::INPUT_GPC);
+        $priv   = rcube_utils::get_input_value('_priv', rcube_utils::INPUT_GPC);
         $engine = $this->enigma->load_engine();
         $list   = $keys == '*' ? $engine->list_keys() : explode(',', $keys);
 
@@ -477,7 +483,7 @@ class enigma_ui
 
             if ($fp = fopen('php://output', 'w')) {
                 foreach ($list as $key) {
-                    $engine->export_key(is_object($key) ? $key->id : $key, $fp);
+                    $engine->export_key(is_object($key) ? $key->id : $key, $fp, (bool) $priv);
                 }
             }
         }

plugins/enigma/localization/en_US.inc

@@ -85,6 +85,10 @@ $labels['enterkeypass'] = 'A passphrase is needed to unlock the secret key ($key
 $labels['arialabelkeyexportoptions'] = 'Keys export options';
 $labels['attachpubkeymsg'] = 'Attach my public key';
 
+$labels['keyexportprompt'] = 'Do you want to include secret keys in the saved OpenPGP keys file?';
+$labels['onlypubkeys'] = 'Export Public Keys Only';
+$labels['withprivkeys'] = 'Export Secret Keys';
+
 $messages = array();
 $messages['sigvalid'] = 'Verified signature from $sender.';
 $messages['sigvalidpartial'] = 'Verified signature from $sender, but part of the body was not signed.';