Prepare to show contact photo of email sender in mail views

program/steps/addressbook/func.inc

@@ -709,7 +709,11 @@ function rcmail_contact_photo($attrib)
     $RCMAIL->output->set_env('photo_placeholder', $photo_img);
     unset($attrib['placeholder']);
 
-    if (preg_match('!^https?://!i', $record['photo']))
+    $plugin = $RCMAIL->plugins->exec_hook('contact_photo', array('record' => $record, 'data' => $record['photo']));
+
+    if ($plugin['url'])
+        $photo_img = $plugin['url'];
+    else if (preg_match('!^https?://!i', $record['photo']))
         $photo_img = $record['photo'];
     else if ($record['photo'])
         $photo_img = $RCMAIL->url(array('_action' => 'photo', '_cid' => $record['ID'], '_source' => $SOURCE_ID));

program/steps/addressbook/show.inc

@@ -22,7 +22,7 @@
 // Get contact ID and source ID from request
 $cids   = rcmail_get_cids();
 $source = key($cids);
-$cid    = array_shift($cids[$source]);
+$cid    = $cids ? array_shift($cids[$source]) : null;
 
 // Initialize addressbook source
 $CONTACTS  = rcmail_contact_source($source, true);
@@ -39,6 +39,19 @@ rcmail_set_sourcename($CONTACTS);
 
 // return raw photo of the given contact
 if ($RCMAIL->action == 'photo') {
+    // search for contact first
+    if (!$record && ($email = get_input_value('_email', RCUBE_INPUT_GPC))) {
+        foreach ($RCMAIL->get_address_sources() as $s) {
+            $abook = $RCMAIL->get_address_book($s['id']);
+            $result = $abook->search(array('email'), $email, 1, true, true, 'photo');
+            while ($result && ($record = $result->iterate())) {
+                if ($record['photo'])
+                    break 2;
+            }
+        }
+    }
+
+    // read the referenced file
     if (($file_id = get_input_value('_photo', RCUBE_INPUT_GPC)) && ($tempfile = $_SESSION['contacts']['files'][$file_id])) {
         $tempfile = $RCMAIL->plugins->exec_hook('attachment_display', $tempfile);
         if ($tempfile['status']) {
@@ -54,6 +67,23 @@ if ($RCMAIL->action == 'photo') {
             $data = base64_decode($data, true);
     }
 
+    // let plugins do fancy things with contact photos
+    $plugin = $RCMAIL->plugins->exec_hook('contact_photo', array('record' => $record, 'email' => $email, 'data' => $data));
+
+    // redirect to url provided by a plugin
+    if ($plugin['url'])
+        $RCMAIL->output->redirect($plugin['url']);
+    else
+        $data = $plugin['data'];
+
+    // deliver alt image
+    if (!$data && ($alt_img = get_input_value('_alt', RCUBE_INPUT_GPC)) && is_file($alt_img))
+        $data = file_get_contents($alt_img);
+
+    // cache for one day if requested by email
+    if (!$cid && $email)
+        $RCMAIL->output->future_expire_header(86400);
+
     header('Content-Type: ' . rc_image_content_type($data));
     echo $data ? $data : file_get_contents('program/blank.gif');
     exit;

program/steps/mail/show.inc

@@ -266,11 +266,25 @@ function rcmail_contact_exists($email)
   return false;
 }
 
+function rcmail_message_contactphoto($attrib)
+{
+  global $RCMAIL, $MESSAGE;
+
+  $placeholder = $attrib['placeholder'] ? $RCMAIL->config->get('skin_path') . $attrib['placeholder'] : null;
+  if ($MESSAGE->sender)
+    $photo_img = $RCMAIL->url(array('_task' => 'addressbook', '_action' => 'photo', '_email' => $MESSAGE->sender['mailto'], '_alt' => $placeholder));
+  else
+    $photo_img = $placeholder ? $placeholder : 'program/blank.gif';
+
+  return html::img(array('src' => $photo_img) + $attrib);
+}
+
 
 $OUTPUT->add_handlers(array(
   'messageattachments' => 'rcmail_message_attachments',
   'mailboxname' => 'rcmail_mailbox_name_display',
   'messageobjects' => 'rcmail_message_objects',
+  'contactphoto' => 'rcmail_message_contactphoto',
 ));