From 750a2b8cef2f979fd2f3642ad2439e496f5df064 Mon Sep 17 00:00:00 2001
From: andryyy <andre.peters@debinux.de>
Date: Sat, 16 Sep 2017 22:59:42 +0200
Subject: [PATCH] [Web] New feature: Show DKIM private keys - needs variable
 set to true in vars.local.inc.php

---
 data/web/admin.php                  |   5 +-
 data/web/inc/functions.dkim.inc.php |   8 +++
 data/web/inc/vars.inc.php           |   3 +
 data/web/js/admin.js                | 102 ++++++++++++++++++++++++++++
 data/web/modals/admin.php           |  14 ++++
 5 files changed, 131 insertions(+), 1 deletion(-)

diff --git a/data/web/admin.php b/data/web/admin.php
index 062b917d1..714a31d2a 100644
--- a/data/web/admin.php
+++ b/data/web/admin.php
@@ -157,6 +157,7 @@ $tfa_data = get_tfa();
               </div>
               <div class="col-xs-9">
                   <pre><?=$dkim['dkim_txt'];?></pre>
+                  <p data-toggle="modal" data-target="#showDKIMprivKey" id="dkim_priv" style="cursor:pointer;margin-top:-8pt" data-priv-key="<?=$dkim['privkey'];?>"><small>↪ Private key</small></p>
               </div>
             </div>
           <?php
@@ -186,6 +187,7 @@ $tfa_data = get_tfa();
                 </div>
                 <div class="col-xs-9">
                   <pre><?=$dkim['dkim_txt'];?></pre>
+                  <p data-toggle="modal" data-target="#showDKIMprivKey" id="dkim_priv" style="cursor:pointer;margin-top:-8pt" data-priv-key="<?=$dkim['privkey'];?>"><small>↪ Private key</small></p>
                 </div>
               </div>
             <?php
@@ -197,7 +199,7 @@ $tfa_data = get_tfa();
               <div class="col-xs-1 col-xs-offset-1">
                 <p><small>↳ Alias-Domain: <strong><?=htmlspecialchars($alias_domain);?></strong><br /></small><span class="label label-danger"><?=$lang['admin']['dkim_key_missing'];?></span></p>
               </div>
-            <div class="col-xs-9"><pre>-</pre></div>
+              <div class="col-xs-9"><pre>-</pre></div>
             </div>
             <?php
             }
@@ -217,6 +219,7 @@ $tfa_data = get_tfa();
                 </div>
                 <div class="col-xs-9">
                   <pre><?=$dkim['dkim_txt'];?></pre>
+                  <p data-toggle="modal" data-target="#showDKIMprivKey" id="dkim_priv" style="cursor:pointer;margin-top:-8pt" data-priv-key="<?=$dkim['privkey'];?>"><small>↪ Private key</small></p>
                 </div>
             </div>
           <?php
diff --git a/data/web/inc/functions.dkim.inc.php b/data/web/inc/functions.dkim.inc.php
index 7871a0d8b..c1730157d 100644
--- a/data/web/inc/functions.dkim.inc.php
+++ b/data/web/inc/functions.dkim.inc.php
@@ -187,6 +187,14 @@ function dkim($_action, $_data = null) {
         }
         $dkimdata['dkim_txt'] = 'v=DKIM1;k=rsa;t=s;s=email;p=' . $redis_dkim_key_data;
         $dkimdata['dkim_selector'] = $redis->hGet('DKIM_SELECTORS', $_data);
+        $dkimdata['privkey'] = $redis->hGet('DKIM_PRIV_KEYS', $dkimdata['dkim_selector'] . $_data);
+        if ($GLOBALS['SHOW_DKIM_PRIV_KEYS'] === true) {
+          $dkimdata['privkey'] = base64_encode($redis->hGet('DKIM_PRIV_KEYS', $dkimdata['dkim_selector'] . '.' . $_data));
+        }
+        else {
+          $dkimdata['privkey'] = base64_encode('Please set $SHOW_DKIM_PRIV_KEYS to true to show DKIM private keys.');
+        }
+        
       }
       return $dkimdata;
     break;
diff --git a/data/web/inc/vars.inc.php b/data/web/inc/vars.inc.php
index cf7458cf6..dfb40bea8 100644
--- a/data/web/inc/vars.inc.php
+++ b/data/web/inc/vars.inc.php
@@ -82,6 +82,9 @@ $DEFAULT_THEME = 'lumen';
 // Password complexity as regular expression
 $PASSWD_REGEP = '.{4,}';
 
+// Show DKIM private keys - false by default
+$SHOW_DKIM_PRIV_KEYS = false;
+
 // mailcow Apps - buttons on login screen
 $MAILCOW_APPS = array(
   array(
diff --git a/data/web/js/admin.js b/data/web/js/admin.js
index 26bf96cd4..7628da82b 100644
--- a/data/web/js/admin.js
+++ b/data/web/js/admin.js
@@ -1,3 +1,96 @@
+var Base64 = {
+    _keyStr: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",
+    encode: function(e) {
+        var t = "";
+        var n, r, i, s, o, u, a;
+        var f = 0;
+        e = Base64._utf8_encode(e);
+        while (f < e.length) {
+            n = e.charCodeAt(f++);
+            r = e.charCodeAt(f++);
+            i = e.charCodeAt(f++);
+            s = n >> 2;
+            o = (n & 3) << 4 | r >> 4;
+            u = (r & 15) << 2 | i >> 6;
+            a = i & 63;
+            if (isNaN(r)) {
+                u = a = 64
+            } else if (isNaN(i)) {
+                a = 64
+            }
+            t = t + this._keyStr.charAt(s) + this._keyStr.charAt(o) +
+                this._keyStr.charAt(u) + this._keyStr.charAt(a)
+        }
+        return t
+    },
+    decode: function(e) {
+        var t = "";
+        var n, r, i;
+        var s, o, u, a;
+        var f = 0;
+        e = e.replace(/[^A-Za-z0-9\+\/\=]/g, "");
+        while (f < e.length) {
+            s = this._keyStr.indexOf(e.charAt(f++));
+            o = this._keyStr.indexOf(e.charAt(f++));
+            u = this._keyStr.indexOf(e.charAt(f++));
+            a = this._keyStr.indexOf(e.charAt(f++));
+            n = s << 2 | o >> 4;
+            r = (o & 15) << 4 | u >> 2;
+            i = (u & 3) << 6 | a;
+            t = t + String.fromCharCode(n);
+            if (u != 64) {
+                t = t + String.fromCharCode(r)
+            }
+            if (a != 64) {
+                t = t + String.fromCharCode(i)
+            }
+        }
+        t = Base64._utf8_decode(t);
+        return t
+    },
+    _utf8_encode: function(e) {
+        e = e.replace(/\r\n/g, "\n");
+        var t = "";
+        for (var n = 0; n < e.length; n++) {
+            var r = e.charCodeAt(n);
+            if (r < 128) {
+                t += String.fromCharCode(r)
+            } else if (r > 127 && r < 2048) {
+                t += String.fromCharCode(r >> 6 | 192);
+                t += String.fromCharCode(r & 63 | 128)
+            } else {
+                t += String.fromCharCode(r >> 12 | 224);
+                t += String.fromCharCode(r >> 6 & 63 | 128);
+                t += String.fromCharCode(r & 63 | 128)
+            }
+        }
+        return t
+    },
+    _utf8_decode: function(e) {
+        var t = "";
+        var n = 0;
+        var r = c1 = c2 = 0;
+        while (n < e.length) {
+            r = e.charCodeAt(n);
+            if (r < 128) {
+                t += String.fromCharCode(r);
+                n++
+            } else if (r > 191 && r < 224) {
+                c2 = e.charCodeAt(n + 1);
+                t += String.fromCharCode((r & 31) << 6 | c2 & 63);
+                n += 2
+            } else {
+                c2 = e.charCodeAt(n + 1);
+                c3 = e.charCodeAt(n + 2);
+                t += String.fromCharCode((r & 15) << 12 | (c2 & 63) <<
+                    6 | c3 & 63);
+                n += 3
+            }
+        }
+        return t
+    }
+}
+
 jQuery(function($){
   // http://stackoverflow.com/questions/24816/escaping-html-strings-with-jquery
   var entityMap = {
@@ -560,6 +653,15 @@ jQuery(function($){
     }
   })
 
+  $('#showDKIMprivKey').on('show.bs.modal', function (e) {
+    $('#priv_key_pre').text("-");
+    p_related = $(e.relatedTarget)
+    if (p_related != null) {
+      var decoded_key = Base64.decode((p_related.data('priv-key')));
+      $('#priv_key_pre').text(decoded_key);
+    }
+  })
+
   $('#test_relayhost').on('click', function (e) {
     e.preventDefault();
     prev = $('#test_relayhost').text();
diff --git a/data/web/modals/admin.php b/data/web/modals/admin.php
index cce43b47a..bf17296c8 100644
--- a/data/web/modals/admin.php
+++ b/data/web/modals/admin.php
@@ -91,3 +91,17 @@ if (!isset($_SESSION['mailcow_cc_role'])) {
     </div>
   </div>
 </div><!-- test relayhost modal -->
+<!-- priv key modal -->
+<div class="modal fade" id="showDKIMprivKey" tabindex="-1" role="dialog" aria-hidden="true">
+  <div class="modal-dialog">
+    <div class="modal-content">
+      <div class="modal-header">
+        <button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">×</span></button>
+        <h3 class="modal-title"><span class="glyphicon glyphicon-lock"></span> Private key</h3>
+      </div>
+      <div class="modal-body">
+      <pre id="priv_key_pre"></pre>
+      </div>
+    </div>
+  </div>
+</div><!-- priv key modal -->