- mail subject and address names can contain accentuated characters (completely obsoleted str_translate_to_ascii7bits and lang_table_translate_ascii7bits but not yet removed from code)

git-svn-id: http://piwigo.org/svn/trunk@2121 68402e56-0260-453c-a942-63ccdbb3a9ee

include/functions_mail.inc.php

@@ -28,6 +28,29 @@
 // |                               functions                               |
 // +-----------------------------------------------------------------------+
 
+
+/**
+ * Encodes a string using Q form if required (RFC2045)
+ * mail headers MUST contain only US-ASCII characters
+ */
+function encode_mime_header($str)
+{
+  $x = preg_match_all('/[\000-\010\013\014\016-\037\177-\377]/', $str, $matches);
+  if ($x==0)
+  {
+    return $str;
+  }
+  // Replace every high ascii, control =, ? and _ characters
+  $str = preg_replace('/([\000-\011\013\014\016-\037\075\077\137\177-\377])/e',
+                  "'='.sprintf('%02X', ord('\\1'))", $str);
+
+  // Replace every spaces to _ (more readable than =20)
+  $str = str_replace(" ", "_", $str);
+
+  global $lang_info;
+  return '=?'.$lang_info['charset'].'?Q?'.$str.'?=';
+}
+
 /*
  * Returns an array of mail configuration parameters :
  *
@@ -80,12 +103,15 @@ function format_email($name, $email)
     // Spring cleaning
     $cvt_name = trim(preg_replace('#[\n\r]+#s', '', $name));
     $cvt_email = trim(preg_replace('#[\n\r]+#s', '', $email));
-    // Ascii convertion
-    $cvt_name = '"'.addslashes(str_translate_to_ascii7bits($cvt_name)).'"';
+
+    if ($cvt_name!="")
+    {
+      $cvt_name = encode_mime_header('"'.$cvt_name.'"').' ';
+    }
 
     if (strpos($cvt_email, '<') === false)
     {
-      return $cvt_name.' <'.$cvt_email.'>';
+      return $cvt_name.'<'.$cvt_email.'>';
     }
     else
     {
@@ -112,7 +138,7 @@ function get_array_template_theme($args = array())
   global $conf;
 
   $res = array();
-  
+
   if (empty($args['template']) or empty($args['theme']))
   {
     list($res['template'], $res['theme']) = explode('/', get_default_template());
@@ -151,7 +177,7 @@ function get_mail_template($email_format, $args = array())
 }
 
 /**
- * Return string email format (html or not) 
+ * Return string email format (html or not)
  *
  * @param string format
  */
@@ -160,7 +186,7 @@ function get_str_email_format($is_html)
   return ($is_html ? 'text/html' : 'text/plain');
 }
 
-/* 
+/*
  * Switch language to param language
  * All entries are push on language stack
  *
@@ -214,7 +240,7 @@ function switch_lang_to($language)
   }
 }
 
-/* 
+/*
  * Switch back language pushed with switch_lang_to function
  *
  * @param: none
@@ -251,7 +277,7 @@ function switch_lang_back()
  */
 /*
  * send en notification email to all administrators
- * if a administrator is doing action, 
+ * if a administrator is doing action,
  * he's be removed to email list
  *
  * @param:
@@ -314,7 +340,7 @@ order by
       (
         'Bcc' => $admins,
         'subject' => '['.$conf['gallery_title'].'] '.l10n_args($keyargs_subject),
-        'content' => 
+        'content' =>
            l10n_args($keyargs_content)."\n\n"
           .l10n_args($keyargs_content_admin_info)."\n",
         'content_format' => 'text/plain'
@@ -342,7 +368,7 @@ order by
  * @return boolean (Ok or not)
  */
 function pwg_mail_group(
-  $group_id, $email_format, $keyargs_subject, 
+  $group_id, $email_format, $keyargs_subject,
   $dirname, $tpl_shortname,
   $assign_vars = array(), $language_selected = '')
 {
@@ -352,11 +378,11 @@ function pwg_mail_group(
   $query = '
 SELECT
   distinct language, template
-FROM 
-  '.USER_GROUP_TABLE.' as ug 
+FROM
+  '.USER_GROUP_TABLE.' as ug
   INNER JOIN '.USERS_TABLE.' as u  ON '.$conf['user_fields']['id'].' = ug.user_id
   INNER JOIN '.USER_INFOS_TABLE.' as ui  ON ui.user_id = ug.user_id
-WHERE 
+WHERE
         '.$conf['user_fields']['email'].' IS NOT NULL
     AND group_id = '.$group_id;
 
@@ -388,11 +414,11 @@ WHERE
 SELECT
   u.'.$conf['user_fields']['username'].' as username,
   u.'.$conf['user_fields']['email'].' as mail_address
-FROM 
-  '.USER_GROUP_TABLE.' as ug 
+FROM
+  '.USER_GROUP_TABLE.' as ug
   INNER JOIN '.USERS_TABLE.' as u  ON '.$conf['user_fields']['id'].' = ug.user_id
   INNER JOIN '.USER_INFOS_TABLE.' as ui  ON ui.user_id = ug.user_id
-WHERE 
+WHERE
         '.$conf['user_fields']['email'].' IS NOT NULL
     AND group_id = '.$group_id.'
     AND language = \''.$elem['language'].'\'
@@ -417,7 +443,7 @@ WHERE
         switch_lang_to($elem['language']);
 
         $mail_template = get_mail_template($email_format, $elem);
-        $mail_template->set_filename($tpl_shortname, 
+        $mail_template->set_filename($tpl_shortname,
           (empty($dirname) ? '' : $dirname.'/').$tpl_shortname.'.tpl');
         $mail_template->assign_vars($assign_vars);
 
@@ -470,7 +496,7 @@ function pwg_mail($to, $args = array())
   {
     return true;
   }
-  
+
   if (!isset($conf_mail))
   {
     $conf_mail = get_mail_configuration();
@@ -508,7 +534,7 @@ function pwg_mail($to, $args = array())
   // Spring cleaning
   $cvt_subject = trim(preg_replace('#[\n\r]+#s', '', $args['subject']));
   // Ascii convertion
-  $cvt_subject = str_translate_to_ascii7bits($cvt_subject);
+  $cvt_subject = encode_mime_header($cvt_subject);
 
   if (!isset($args['content']))
   {
@@ -576,7 +602,7 @@ function pwg_mail($to, $args = array())
         'CONTENT_ENCODING' => $lang_info['charset'],
         'LANG' => $lang_info['code'],
         'DIR' => $lang_info['direction'],
-        
+
         // Footer
         'GALLERY_URL' =>
           isset($page['gallery_url']) ?