gnucash-htdocs master: Update php-gettext to latest Debian patch.

John Ralls jralls at code.gnucash.org
Fri Mar 31 17:24:39 EDT 2023


Updated	 via  https://github.com/Gnucash/gnucash-htdocs/commit/aaaf2699 (commit)
	from  https://github.com/Gnucash/gnucash-htdocs/commit/9dae2198 (commit)



commit aaaf269954707f346fd45e8cf7b7ac2793d2f24a
Author: John Ralls <jralls at ceridwen.us>
Date:   Fri Mar 31 14:18:58 2023 -0700

    Update php-gettext to latest Debian patch.
    
    Fixes CVE-2016-6175, among other things.

diff --git a/externals/gettext.inc b/externals/gettext.inc
index 399a0f2..423eb77 100644
--- a/externals/gettext.inc
+++ b/externals/gettext.inc
@@ -32,7 +32,6 @@ LC_MESSAGES     5
 LC_ALL          6
 */
 
-
 // LC_MESSAGES is not available if php-gettext is not loaded
 // while the other constants are already available from session extension.
 if (!defined('LC_MESSAGES')) {
@@ -168,21 +167,20 @@ function _check_locale_and_function($function=false) {
 function _get_codeset($domain=null) {
     global $text_domains, $default_domain, $LC_CATEGORIES;
     if (!isset($domain)) $domain = $default_domain;
-    return (isset($text_domains[$domain]->codeset))? $text_domains[$domain]->codeset : ini_get('mbstring.internal_encoding');
+    return (isset($text_domains[$domain]->codeset))? $text_domains[$domain]->codeset : ini_get('default_charset');
 }
 
 /**
  * Convert the given string to the encoding set by bind_textdomain_codeset.
  */
 function _encode($text) {
+  $target_encoding = _get_codeset();
+  if (function_exists("mb_detect_encoding")) {
     $source_encoding = mb_detect_encoding($text);
-    $target_encoding = _get_codeset();
-    if ($source_encoding != $target_encoding) {
-        return mb_convert_encoding($text, $target_encoding, $source_encoding);
-    }
-    else {
-        return $text;
-    }
+    if ($source_encoding != $target_encoding)
+      $text = mb_convert_encoding($text, $target_encoding, $source_encoding);
+  }
+  return $text;
 }
 
 
@@ -229,7 +227,9 @@ function _setlocale($category, $locale) {
         }
         // Allow locale to be changed on the go for one translation domain.
         global $text_domains, $default_domain;
-        unset($text_domains[$default_domain]->l10n);
+        if (array_key_exists($default_domain, $text_domains)) {
+            unset($text_domains[$default_domain]->l10n);
+        }
         return $CURRENTLOCALE;
     }
 }
@@ -288,9 +288,9 @@ function __($msgid) {
 /**
  * Plural version of gettext.
  */
-function _ngettext($single, $plural, $number) {
+function _ngettext($singular, $plural, $number) {
     $l10n = _get_reader();
-    return _encode($l10n->ngettext($single, $plural, $number));
+    return _encode($l10n->ngettext($singular, $plural, $number));
 }
 
 /**
@@ -304,9 +304,9 @@ function _dgettext($domain, $msgid) {
 /**
  * Plural version of dgettext.
  */
-function _dngettext($domain, $single, $plural, $number) {
+function _dngettext($domain, $singular, $plural, $number) {
     $l10n = _get_reader($domain);
-    return _encode($l10n->ngettext($single, $plural, $number));
+    return _encode($l10n->ngettext($singular, $plural, $number));
 }
 
 /**
@@ -319,9 +319,9 @@ function _dcgettext($domain, $msgid, $category) {
 /**
  * Plural version of dcgettext.
  */
-function _dcngettext($domain, $single, $plural, $number, $category) {
+function _dcngettext($domain, $singular, $plural, $number, $category) {
     $l10n = _get_reader($domain, $category);
-    return _encode($l10n->ngettext($single, $plural, $number));
+    return _encode($l10n->ngettext($singular, $plural, $number));
 }
 
 /**
@@ -405,29 +405,29 @@ function T_($msgid) {
     if (_check_locale_and_function()) return _($msgid);
     return __($msgid);
 }
-function T_ngettext($single, $plural, $number) {
+function T_ngettext($singular, $plural, $number) {
     if (_check_locale_and_function())
-        return ngettext($single, $plural, $number);
-    else return _ngettext($single, $plural, $number);
+        return ngettext($singular, $plural, $number);
+    else return _ngettext($singular, $plural, $number);
 }
 function T_dgettext($domain, $msgid) {
     if (_check_locale_and_function()) return dgettext($domain, $msgid);
     else return _dgettext($domain, $msgid);
 }
-function T_dngettext($domain, $single, $plural, $number) {
+function T_dngettext($domain, $singular, $plural, $number) {
     if (_check_locale_and_function())
-        return dngettext($domain, $single, $plural, $number);
-    else return _dngettext($domain, $single, $plural, $number);
+        return dngettext($domain, $singular, $plural, $number);
+    else return _dngettext($domain, $singular, $plural, $number);
 }
 function T_dcgettext($domain, $msgid, $category) {
     if (_check_locale_and_function())
         return dcgettext($domain, $msgid, $category);
     else return _dcgettext($domain, $msgid, $category);
 }
-function T_dcngettext($domain, $single, $plural, $number, $category) {
+function T_dcngettext($domain, $singular, $plural, $number, $category) {
     if (_check_locale_and_function())
-      return dcngettext($domain, $single, $plural, $number, $category);
-    else return _dcngettext($domain, $single, $plural, $number, $category);
+      return dcngettext($domain, $singular, $plural, $number, $category);
+    else return _dcngettext($domain, $singular, $plural, $number, $category);
 }
 
 function T_pgettext($context, $msgid) {
@@ -451,26 +451,27 @@ function T_dcpgettext($domain, $context, $msgid, $category) {
       return _dcpgettext($domain, $context, $msgid, $category);
 }
 
-function T_npgettext($context, $singular, $plural) {
+function T_npgettext($context, $singular, $plural, $number) {
     if (_check_locale_and_function('npgettext'))
-        return npgettext($context, $single, $plural, $number);
+        return npgettext($context, $singular, $plural, $number);
     else
-        return _npgettext($context, $single, $plural, $number);
+        return _npgettext($context, $singular, $plural, $number);
 }
 
-function T_dnpgettext($domain, $context, $singular, $plural) {
+function T_dnpgettext($domain, $context, $singular, $plural, $number) {
   if (_check_locale_and_function('dnpgettext'))
-      return dnpgettext($domain, $context, $single, $plural, $number);
+      return dnpgettext($domain, $context, $singular, $plural, $number);
   else
-      return _dnpgettext($domain, $context, $single, $plural, $number);
+      return _dnpgettext($domain, $context, $singular, $plural, $number);
 }
 
-function T_dcnpgettext($domain, $context, $singular, $plural, $category) {
+function T_dcnpgettext($domain, $context, $singular, $plural,
+                       $number, $category) {
     if (_check_locale_and_function('dcnpgettext'))
-        return dcnpgettext($domain, $context, $single,
+        return dcnpgettext($domain, $context, $singular,
                            $plural, $number, $category);
     else
-        return _dcnpgettext($domain, $context, $single,
+        return _dcnpgettext($domain, $context, $singular,
                             $plural, $number, $category);
 }
 
@@ -494,39 +495,39 @@ if (!function_exists('gettext')) {
     function _($msgid) {
         return __($msgid);
     }
-    function ngettext($single, $plural, $number) {
-        return _ngettext($single, $plural, $number);
+    function ngettext($singular, $plural, $number) {
+        return _ngettext($singular, $plural, $number);
     }
     function dgettext($domain, $msgid) {
         return _dgettext($domain, $msgid);
     }
-    function dngettext($domain, $single, $plural, $number) {
-        return _dngettext($domain, $single, $plural, $number);
+    function dngettext($domain, $singular, $plural, $number) {
+        return _dngettext($domain, $singular, $plural, $number);
     }
     function dcgettext($domain, $msgid, $category) {
         return _dcgettext($domain, $msgid, $category);
     }
-    function dcngettext($domain, $single, $plural, $number, $category) {
-        return _dcngettext($domain, $single, $plural, $number, $category);
+    function dcngettext($domain, $singular, $plural, $number, $category) {
+        return _dcngettext($domain, $singular, $plural, $number, $category);
     }
     function pgettext($context, $msgid) {
         return _pgettext($context, $msgid);
     }
-    function npgettext($context, $single, $plural, $number) {
-        return _npgettext($context, $single, $plural, $number);
+    function npgettext($context, $singular, $plural, $number) {
+        return _npgettext($context, $singular, $plural, $number);
     }
     function dpgettext($domain, $context, $msgid) {
         return _dpgettext($domain, $context, $msgid);
     }
-    function dnpgettext($domain, $context, $single, $plural, $number) {
-        return _dnpgettext($domain, $context, $single, $plural, $number);
+    function dnpgettext($domain, $context, $singular, $plural, $number) {
+        return _dnpgettext($domain, $context, $singular, $plural, $number);
     }
     function dcpgettext($domain, $context, $msgid, $category) {
         return _dcpgettext($domain, $context, $msgid, $category);
     }
-    function dcnpgettext($domain, $context, $single, $plural,
+    function dcnpgettext($domain, $context, $singular, $plural,
                          $number, $category) {
-      return _dcnpgettext($domain, $context, $single, $plural,
+      return _dcnpgettext($domain, $context, $singular, $plural,
                           $number, $category);
     }
 }
diff --git a/externals/gettext.php b/externals/gettext.php
index de50b8c..295d4b0 100644
--- a/externals/gettext.php
+++ b/externals/gettext.php
@@ -21,6 +21,8 @@
 
 */
 
+require('plurals.php');
+
 /**
  * Provides a simple gettext replacement that works independently from
  * the system's gettext abilities.
@@ -98,7 +100,7 @@ class gettext_reader {
    * @param object Reader the StreamReader object
    * @param boolean enable_cache Enable or disable caching of strings (default on)
    */
-  function gettext_reader($Reader, $enable_cache = true) {
+  function __construct($Reader, $enable_cache = true) {
     // If there isn't a StreamReader, turn on short circuit mode.
     if (! $Reader || isset($Reader->error) ) {
       $this->short_circuit = true;
@@ -139,18 +141,16 @@ class gettext_reader {
    */
   function load_tables() {
     if (is_array($this->cache_translations) &&
-        is_array($this->table_originals) &&
-        is_array($this->table_translations))
+      is_array($this->table_originals) &&
+      is_array($this->table_translations))
       return;
 
     /* get original and translations tables */
-      if ($this->table_originals &&
-          !is_array($this->table_originals)) {
+    if (!is_array($this->table_originals)) {
       $this->STREAM->seekto($this->originals);
       $this->table_originals = $this->readintarray($this->total * 2);
     }
-      if ($this->table_translations &&
-          !is_array($this->table_translations)) {
+    if (!is_array($this->table_translations)) {
       $this->STREAM->seekto($this->translations);
       $this->table_translations = $this->readintarray($this->total * 2);
     }
@@ -271,41 +271,6 @@ class gettext_reader {
     }
   }
 
-  /**
-   * Sanitize plural form expression for use in PHP eval call.
-   *
-   * @access private
-   * @return string sanitized plural form expression
-   */
-  function sanitize_plural_expression($expr) {
-    // Get rid of disallowed characters.
-    $expr = preg_replace('@[^a-zA-Z0-9_:;\(\)\?\|\&=!<>+*/\%-]@', '', $expr);
-
-    // Add parenthesis for tertiary '?' operator.
-    $expr .= ';';
-    $res = '';
-    $p = 0;
-    for ($i = 0; $i < strlen($expr); $i++) {
-      $ch = $expr[$i];
-      switch ($ch) {
-      case '?':
-        $res .= ' ? (';
-        $p++;
-        break;
-      case ':':
-        $res .= ') : (';
-        break;
-      case ';':
-        $res .= str_repeat( ')', $p) . ';';
-        $p = 0;
-        break;
-      default:
-        $res .= $ch;
-      }
-    }
-    return $res;
-  }
-
   /**
    * Parse full PO header and extract only plural forms line.
    *
@@ -332,14 +297,14 @@ class gettext_reader {
     $this->load_tables();
 
     // cache header field for plural forms
-    if (! is_string($this->pluralheader)) {
+    if ($this->pluralheader === NULL) {
       if ($this->enable_cache) {
         $header = $this->cache_translations[""];
       } else {
         $header = $this->get_translation_string(0);
       }
       $expr = $this->extract_plural_forms_header_from_po_header($header);
-      $this->pluralheader = $this->sanitize_plural_expression($expr);
+      $this->pluralheader = new PluralHeader($expr);
     }
     return $this->pluralheader;
   }
@@ -352,16 +317,16 @@ class gettext_reader {
    * @return int array index of the right plural form
    */
   function select_string($n) {
-    $string = $this->get_plural_forms();
-    $string = str_replace('nplurals',"\$total",$string);
-    $string = str_replace("n",$n,$string);
-    $string = str_replace('plural',"\$plural",$string);
+    if (!is_int($n)) {
+      throw new InvalidArgumentException(
+        "Select_string only accepts integers: " . $n);
+    }
+    $plural_header = $this->get_plural_forms();
+    $plural = $plural_header->expression->evaluate($n);
 
-    $total = 0;
-    $plural = 0;
+    if ($plural < 0) $plural = 0;
+    if ($plural >= $plural_header->total) $plural = $plural_header->total - 1;
 
-    eval("$string");
-    if ($plural >= $total) $plural = $total - 1;
     return $plural;
   }
 
@@ -411,12 +376,23 @@ class gettext_reader {
 
   function pgettext($context, $msgid) {
     $key = $context . chr(4) . $msgid;
-    return $this->translate($key);
+    $ret = $this->translate($key);
+    if (strpos($ret, "\004") !== FALSE) {
+      return $msgid;
+    } else {
+      return $ret;
+    }
   }
 
   function npgettext($context, $singular, $plural, $number) {
-    $singular = $context . chr(4) . $singular;
-    return $this->ngettext($singular, $plural, $number);
+    $key = $context . chr(4) . $singular;
+    $ret = $this->ngettext($key, $plural, $number);
+    if (strpos($ret, "\004") !== FALSE) {
+      return $singular;
+    } else {
+      return $ret;
+    }
+
   }
 }
 
diff --git a/externals/streams.php b/externals/streams.php
index 3cdc158..00cf6cc 100644
--- a/externals/streams.php
+++ b/externals/streams.php
@@ -49,7 +49,7 @@ class StringReader {
   var $_pos;
   var $_str;
 
-  function StringReader($str='') {
+  function __construct($str='') {
     $this->_str = $str;
     $this->_pos = 0;
   }
@@ -86,7 +86,7 @@ class FileReader {
   var $_fd;
   var $_length;
 
-  function FileReader($filename) {
+  function __construct($filename) {
     if (file_exists($filename)) {
 
       $this->_length=filesize($filename);
@@ -143,7 +143,7 @@ class FileReader {
 // Preloads entire file in memory first, then creates a StringReader
 // over it (it assumes knowledge of StringReader internals)
 class CachedFileReader extends StringReader {
-  function CachedFileReader($filename) {
+  function __construct($filename) {
     if (file_exists($filename)) {
 
       $length=filesize($filename);



Summary of changes:
 externals/gettext.inc | 93 ++++++++++++++++++++++++++-------------------------
 externals/gettext.php | 86 +++++++++++++++++------------------------------
 externals/streams.php |  6 ++--
 3 files changed, 81 insertions(+), 104 deletions(-)



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