feature 2541 multisize

- core implementation + usage on most public/admin pages
- still to do: sync process, upload, gui/persistence for size parameters, migration script, center of interest ...

git-svn-id: http://piwigo.org/svn/trunk@12796 68402e56-0260-453c-a942-63ccdbb3a9ee

1 files changed, 292 insertions, 0 deletions

diff --git a/i.php b/i.php
new file mode 100644
index 000000000..9f5463601
--- /dev/null
+++ b/i.php
@@ -0,0 +1,292 @@
+<?php
+// +-----------------------------------------------------------------------+
+// | Piwigo - a PHP based photo gallery                                    |
+// +-----------------------------------------------------------------------+
+// | Copyright(C) 2008-2012 Piwigo Team                  http://piwigo.org |
+// +-----------------------------------------------------------------------+
+// | This program is free software; you can redistribute it and/or modify  |
+// | it under the terms of the GNU General Public License as published by  |
+// | the Free Software Foundation                                          |
+// |                                                                       |
+// | This program is distributed in the hope that it will be useful, but   |
+// | WITHOUT ANY WARRANTY; without even the implied warranty of            |
+// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU      |
+// | General Public License for more details.                              |
+// |                                                                       |
+// | You should have received a copy of the GNU General Public License     |
+// | along with this program; if not, write to the Free Software           |
+// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
+// | USA.                                                                  |
+// +-----------------------------------------------------------------------+
+
+define('PHPWG_ROOT_PATH','');
+
+// fast bootstrap - no db connection
+include(PHPWG_ROOT_PATH . 'include/config_default.inc.php');
+@include(PHPWG_ROOT_PATH. 'local/config/config.inc.php');
+
+defined('PWG_LOCAL_DIR') or define('PWG_LOCAL_DIR', 'local/');
+defined('PWG_DERIVATIVE_DIR') or define('PWG_DERIVATIVE_DIR', PWG_LOCAL_DIR.'i/');
+
+function trigger_action() {}
+function get_extension( $filename )
+{
+  return substr( strrchr( $filename, '.' ), 1, strlen ( $filename ) );
+}
+
+function mkgetdir($dir)
+{
+  if ( !is_dir($dir) )
+  {
+    global $conf;
+    if (substr(PHP_OS, 0, 3) == 'WIN')
+    {
+      $dir = str_replace('/', DIRECTORY_SEPARATOR, $dir);
+    }
+    $umask = umask(0);
+    $mkd = @mkdir($dir, $conf['chmod_value'], true);
+    umask($umask);
+    if ($mkd==false)
+    {
+      return false;
+    }
+
+    $file = $dir.'/index.htm';
+    file_exists($file) or @file_put_contents( $file, 'Not allowed!' );
+  }
+  if ( !is_writable($dir) )
+  {
+    return false;
+  }
+  return true;
+}
+
+// end fast bootstrap
+
+
+function ierror($msg, $code)
+{
+  if ($code==301 || $code==302)
+  {
+    if (ob_get_length () !== FALSE)
+    {
+      ob_clean();
+    }
+    // default url is on html format
+    $url = html_entity_decode($msg);
+    header('Request-URI: '.$url);
+    header('Content-Location: '.$url);
+    header('Location: '.$url);
+    exit;
+  }
+  if ($code>=400)
+  {
+    $protocol = $_SERVER["SERVER_PROTOCOL"];
+    if ( ('HTTP/1.1' != $protocol) && ('HTTP/1.0' != $protocol) )
+      $protocol = 'HTTP/1.0';
+
+    header( "$protocol $code $msg", true, $code );
+  }
+  //todo improve
+  echo $msg;
+  exit;
+}
+
+
+function parse_request()
+{
+  global $conf, $page;
+
+  if ( $conf['question_mark_in_urls']==false and
+       isset($_SERVER["PATH_INFO"]) and !empty($_SERVER["PATH_INFO"]) )
+  {
+    $req = $_SERVER["PATH_INFO"];
+    $req = str_replace('//', '/', $req);
+    $path_count = count( explode('/', $req) );
+    $page['root_path'] = PHPWG_ROOT_PATH.str_repeat('../', $path_count-1);
+  }
+  else
+  {
+    $req = $_SERVER["QUERY_STRING"];
+    /*foreach (array_keys($_GET) as $keynum => $key)
+    {
+      $req = $key;
+      break;
+    }*/
+    $page['root_path'] = PHPWG_ROOT_PATH;
+  }
+
+  $req = ltrim($req, '/');
+  !preg_match('#[^a-zA-Z0-9/_.-]#', $req) or ierror('Invalid chars in request', 400);
+
+  $page['derivative_path'] = PHPWG_ROOT_PATH.PWG_DERIVATIVE_DIR.$req;
+
+  $pos = strrpos($req, '.');
+  $pos!== false || ierror('Missing .', 400);
+  $ext = substr($req, $pos);
+  $page['derivative_ext'] = $ext;
+  $req = substr($req, 0, $pos);
+
+  $pos = strrpos($req, '-');
+  $pos!== false || ierror('Missing -', 400);
+  $deriv = substr($req, $pos+1);
+  $req = substr($req, 0, $pos);
+
+  $deriv = explode('_', $deriv);
+  foreach (ImageStdParams::get_defined_type_map() as $type => $params)
+  {
+    if (substr($type,0,2) == $deriv[0])
+    {
+      $page['derivative_type'] = $type;
+      $page['derivative_params'] = $params;
+      break;
+    }
+  }
+
+  if (!isset($page['derivative_type']))
+  {
+    if (substr(IMG_CUSTOM,0,2) == $deriv[0])
+    {
+      $page['derivative_type'] = IMG_CUSTOM;
+    }
+    else
+    {
+      ierror('Unknown parsing type', 400);
+    }
+  }
+  array_shift($deriv);
+
+  $page['coi'] = '';
+  if (count($deriv) && $deriv[0][0]=='c' && $deriv[0][1]=='i')
+  {
+    $page['coi'] = substr(array_shift($deriv), 2);
+    preg_match('#^[a-z]{4}$#', $page['coi']) or ierror('Invalid center of interest', 400);
+  }
+
+  if ($page['derivative_type'] == IMG_CUSTOM)
+  {
+    try
+    {
+      $page['derivative_params'] = ImageParams::from_url_tokens($deriv);
+    }
+    catch (Exception $e)
+    {
+      ierror($e->getMessage(), 400);
+    }
+  }
+
+  if ($req[0]!='g' && $req[0]!='u')
+    $req = '../'.$req;
+
+  $page['src_location'] = $req.$ext;
+  $page['src_path'] = PHPWG_ROOT_PATH.$page['src_location'];
+  $page['src_url'] = $page['root_path'].$page['src_location'];
+}
+
+
+
+$page=array();
+
+include_once( PHPWG_ROOT_PATH .'/include/derivative_params.inc.php');
+include_once( PHPWG_ROOT_PATH .'/include/derivative_std_params.inc.php');
+
+ImageStdParams::load_from_file();
+
+
+parse_request();
+//var_export($page);
+
+$params = $page['derivative_params'];
+if ($params->sizing->ideal_size[0] < 20 or $params->sizing->ideal_size[1] < 20)
+{
+  ierror('Invalid size', 400);
+}
+if ($params->sizing->max_crop < 0 or $params->sizing->max_crop > 1)
+{
+  ierror('Invalid crop', 400);
+}
+
+$src_mtime = @filemtime($page['src_path']);
+if ($src_mtime === false)
+{
+  ierror('Source not found', 404);
+}
+
+$need_generate = false;
+$derivative_mtime = @filemtime($page['derivative_path']);
+if ($derivative_mtime === false or
+    $derivative_mtime < $src_mtime or
+    $derivative_mtime < $params->last_mod_time)
+{
+  $need_generate = true;
+}
+
+if (!$need_generate)
+{
+  if ( isset( $_SERVER['HTTP_IF_MODIFIED_SINCE'] )
+    and strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) == $derivative_mtime)
+  {// send the last mod time of the file back
+    header('Last-Modified: '.gmdate('D, d M Y H:i:s', $derivative_mtime).' GMT', true, 304);
+    header('Expires: '.gmdate('D, d M Y H:i:s', time()+10*24*3600).' GMT', true, 304);
+    exit;
+  }
+  // todo send pass-through
+}
+
+
+include_once(PHPWG_ROOT_PATH . 'admin/include/image.class.php');
+$image = new pwg_image($page['src_path']);
+
+if (!mkgetdir(dirname($page['derivative_path'])))
+{
+  ierror("dir create error", 500);
+}
+
+$changes = 0;
+
+// todo rotate
+
+// Crop & scale
+$params->sizing->compute( array($image->get_width(),$image->get_height()), $page['coi'], $crop_rect, $scale_width );
+if ($crop_rect)
+{
+  $changes++;
+  $image->crop( $crop_rect->width(), $crop_rect->height(), $crop_rect->l, $crop_rect->t);
+}
+
+if ($scale_width)
+{
+  $changes++;
+  $image->resize( $scale_width[0], $scale_width[1] );
+}
+
+// no change required - redirect to source
+if (!$changes)
+{
+  header("X-i: No change");
+  ierror( $page['src_url'], 301);
+}
+
+$image->write( $page['derivative_path'] );
+$image->destroy();
+
+$fp = fopen($page['derivative_path'], 'rb');
+
+$fstat = fstat($fp);
+header('Last-Modified: '.gmdate('D, d M Y H:i:s', $fstat['mtime']).' GMT');
+header('Expires: '.gmdate('D, d M Y H:i:s', time()+10*24*3600).' GMT');
+header('Content-length: '.$fstat['size']);
+header('Connection: close');
+
+$ctype="application/octet-stream";
+switch (strtolower($page['derivative_ext']))
+{
+  case ".jpe": case ".jpeg": case ".jpg": $ctype="image/jpeg"; break;
+  case ".png": $ctype="image/png"; break;
+  case ".gif": $ctype="image/gif"; break;
+}
+header("Content-Type: $ctype");
+
+fpassthru($fp);
+exit;
+?>
\ No newline at end of file