<?php
/**
 * @package dompdf
 * @link    http://dompdf.github.com/
 * @author  Benj Carson <benjcarson@digitaljunkies.ca>
 * @author  Helmut Tischer <htischer@weihenstephan.org>
 * @author  Fabien Ménager <fabien.menager@gmail.com>
 * @author   Brian Sweeney <eclecticgeek@gmail.com>
 * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
 */

if ( class_exists( 'DOMPDF' , false ) ) { return; }

PHP_VERSION >= 5.0 or die("DOMPDF requires PHP 5.0+");

/**
 * The root of your DOMPDF installation
 */
define("DOMPDF_DIR", str_replace(DIRECTORY_SEPARATOR, '/', realpath(dirname(__FILE__))));

/**
 * The location of the DOMPDF include directory
 */
define("DOMPDF_INC_DIR", DOMPDF_DIR . "/include");

/**
 * The location of the DOMPDF lib directory
 */
define("DOMPDF_LIB_DIR", DOMPDF_DIR . "/lib");

/**
 * Some installations don't have $_SERVER['DOCUMENT_ROOT']
 * http://fyneworks.blogspot.com/2007/08/php-documentroot-in-iis-windows-servers.html
 */
if( !isset($_SERVER['DOCUMENT_ROOT']) ) {
  $path = "";
  
  if ( isset($_SERVER['SCRIPT_FILENAME']) )
    $path = $_SERVER['SCRIPT_FILENAME'];
  elseif ( isset($_SERVER['PATH_TRANSLATED']) )
    $path = str_replace('\\\\', '\\', $_SERVER['PATH_TRANSLATED']);
    
  $_SERVER['DOCUMENT_ROOT'] = str_replace( '\\', '/', substr($path, 0, 0-strlen($_SERVER['PHP_SELF'])));
}

/** Include the custom config file if it exists */
if ( file_exists(DOMPDF_DIR . "/dompdf_config.custom.inc.php") ){
  require_once(DOMPDF_DIR . "/dompdf_config.custom.inc.php");
}

//FIXME: Some function definitions rely on the constants defined by DOMPDF. However, might this location prove problematic?
require_once(DOMPDF_INC_DIR . "/functions.inc.php");

/**
 * Username and password used by the configuration utility in www/
 */
def("DOMPDF_ADMIN_USERNAME", "user");
def("DOMPDF_ADMIN_PASSWORD", "password");

/**
 * The location of the DOMPDF font directory
 *
 * The location of the directory where DOMPDF will store fonts and font metrics
 * Note: This directory must exist and be writable by the webserver process.
 * *Please note the trailing slash.*
 *
 * Notes regarding fonts:
 * Additional .afm font metrics can be added by executing load_font.php from command line.
 *
 * Only the original "Base 14 fonts" are present on all pdf viewers. Additional fonts must
 * be embedded in the pdf file or the PDF may not display correctly. This can significantly
 * increase file size unless font subsetting is enabled. Before embedding a font please
 * review your rights under the font license.
 *
 * Any font specification in the source HTML is translated to the closest font available
 * in the font directory.
 *
 * The pdf standard "Base 14 fonts" are:
 * Courier, Courier-Bold, Courier-BoldOblique, Courier-Oblique,
 * Helvetica, Helvetica-Bold, Helvetica-BoldOblique, Helvetica-Oblique,
 * Times-Roman, Times-Bold, Times-BoldItalic, Times-Italic,
 * Symbol, ZapfDingbats.
 */
def("DOMPDF_FONT_DIR", DOMPDF_DIR . "/lib/fonts/");

/**
 * The location of the DOMPDF font cache directory
 *
 * This directory contains the cached font metrics for the fonts used by DOMPDF.
 * This directory can be the same as DOMPDF_FONT_DIR
 * 
 * Note: This directory must exist and be writable by the webserver process.
 */
def("DOMPDF_FONT_CACHE", DOMPDF_FONT_DIR);

/**
 * The location of a temporary directory.
 *
 * The directory specified must be writeable by the webserver process.
 * The temporary directory is required to download remote images and when
 * using the PFDLib back end.
 */
def("DOMPDF_TEMP_DIR", sys_get_temp_dir());

/**
 * ==== IMPORTANT ====
 *
 * dompdf's "chroot": Prevents dompdf from accessing system files or other
 * files on the webserver.  All local files opened by dompdf must be in a
 * subdirectory of this directory.  DO NOT set it to '/' since this could
 * allow an attacker to use dompdf to read any files on the server.  This
 * should be an absolute path.
 * This is only checked on command line call by dompdf.php, but not by
 * direct class use like:
 * $dompdf = new DOMPDF();	$dompdf->load_html($htmldata); $dompdf->render(); $pdfdata = $dompdf->output();
 */
def("DOMPDF_CHROOT", realpath(DOMPDF_DIR));

/**
 * Whether to use Unicode fonts or not.
 *
 * When set to true the PDF backend must be set to "CPDF" and fonts must be
 * loaded via load_font.php.
 *
 * When enabled, dompdf can support all Unicode glyphs. Any glyphs used in a
 * document must be present in your fonts, however.
 */
def("DOMPDF_UNICODE_ENABLED", true);

/**
 * Whether to enable font subsetting or not.
 */
def("DOMPDF_ENABLE_FONTSUBSETTING", false);

/**
 * The PDF rendering backend to use
 *
 * Valid settings are 'PDFLib', 'CPDF' (the bundled R&OS PDF class), 'GD' and
 * 'auto'. 'auto' will look for PDFLib and use it if found, or if not it will
 * fall back on CPDF. 'GD' renders PDFs to graphic files. {@link
 * Canvas_Factory} ultimately determines which rendering class to instantiate
 * based on this setting.
 *
 * Both PDFLib & CPDF rendering backends provide sufficient rendering
 * capabilities for dompdf, however additional features (e.g. object,
 * image and font support, etc.) differ between backends.  Please see
 * {@link PDFLib_Adapter} for more information on the PDFLib backend
 * and {@link CPDF_Adapter} and lib/class.pdf.php for more information
 * on CPDF. Also see the documentation for each backend at the links
 * below.
 *
 * The GD rendering backend is a little different than PDFLib and
 * CPDF. Several features of CPDF and PDFLib are not supported or do
 * not make any sense when creating image files.  For example,
 * multiple pages are not supported, nor are PDF 'objects'.  Have a
 * look at {@link GD_Adapter} for more information.  GD support is
 * experimental, so use it at your own risk.
 *
 * @link http://www.pdflib.com
 * @link http://www.ros.co.nz/pdf
 * @link http://www.php.net/image
 */
def("DOMPDF_PDF_BACKEND", "CPDF");

/**
 * PDFlib license key
 *
 * If you are using a licensed, commercial version of PDFlib, specify
 * your license key here.  If you are using PDFlib-Lite or are evaluating
 * the commercial version of PDFlib, comment out this setting.
 *
 * @link http://www.pdflib.com
 *
 * If pdflib present in web server and auto or selected explicitely above,
 * a real license code must exist!
 */
//def("DOMPDF_PDFLIB_LICENSE", "your license key here");

/**
 * html target media view which should be rendered into pdf.
 * List of types and parsing rules for future extensions:
 * http://www.w3.org/TR/REC-html40/types.html
 *   screen, tty, tv, projection, handheld, print, braille, aural, all
 * Note: aural is deprecated in CSS 2.1 because it is replaced by speech in CSS 3.
 * Note, even though the generated pdf file is intended for print output,
 * the desired content might be different (e.g. screen or projection view of html file).
 * Therefore allow specification of content here.
 */
def("DOMPDF_DEFAULT_MEDIA_TYPE", "screen");

/**
 * The default paper size.
 *
 * North America standard is "letter"; other countries generally "a4"
 *
 * @see CPDF_Adapter::PAPER_SIZES for valid sizes
 */
def("DOMPDF_DEFAULT_PAPER_SIZE", "letter");

/**
 * The default font family
 *
 * Used if no suitable fonts can be found. This must exist in the font folder.
 * @var string
 */
def("DOMPDF_DEFAULT_FONT", "serif");

/**
 * Image DPI setting
 *
 * This setting determines the default DPI setting for images and fonts.  The
 * DPI may be overridden for inline images by explictly setting the
 * image's width & height style attributes (i.e. if the image's native
 * width is 600 pixels and you specify the image's width as 72 points,
 * the image will have a DPI of 600 in the rendered PDF.  The DPI of
 * background images can not be overridden and is controlled entirely
 * via this parameter.
 *
 * For the purposes of DOMPDF, pixels per inch (PPI) = dots per inch (DPI).
 * If a size in html is given as px (or without unit as image size),
 * this tells the corresponding size in pt at 72 DPI.
 * This adjusts the relative sizes to be similar to the rendering of the
 * html page in a reference browser.
 *
 * In pdf, always 1 pt = 1/72 inch
 *
 * Rendering resolution of various browsers in px per inch:
 * Windows Firefox and Internet Explorer:
 *   SystemControl->Display properties->FontResolution: Default:96, largefonts:120, custom:?
 * Linux Firefox:
 *   about:config *resolution: Default:96
 *   (xorg screen dimension in mm and Desktop font dpi settings are ignored)
 *
 * Take care about extra font/image zoom factor of browser.
 *
 * In images, <img> size in pixel attribute, img css style, are overriding
 * the real image dimension in px for rendering.
 *
 * @var int
 */
def("DOMPDF_DPI", 96);

/**
 * Enable inline PHP
 *
 * If this setting is set to true then DOMPDF will automatically evaluate
 * inline PHP contained within <script type="text/php"> ... </script> tags.
 *
 * Attention!
 * Enabling this for documents you do not trust (e.g. arbitrary remote html
 * pages) is a security risk. Inline scripts are run with the same level of
 * system access available to dompdf. Set this option to false (recommended)
 * if you wish to process untrusted documents.
 *
 * @var bool
 */
def("DOMPDF_ENABLE_PHP", false);

/**
 * Enable inline Javascript
 *
 * If this setting is set to true then DOMPDF will automatically insert
 * JavaScript code contained within <script type="text/javascript"> ... </script> tags.
 *
 * @var bool
 */
def("DOMPDF_ENABLE_JAVASCRIPT", true);

/**
 * Enable remote file access
 *
 * If this setting is set to true, DOMPDF will access remote sites for
 * images and CSS files as required.
 * This is required for part of test case www/test/image_variants.html through www/examples.php
 *
 * Attention!
 * This can be a security risk, in particular in combination with DOMPDF_ENABLE_PHP and
 * allowing remote access to dompdf.php or on allowing remote html code to be passed to
 * $dompdf = new DOMPDF(); $dompdf->load_html(...);
 * This allows anonymous users to download legally doubtful internet content which on
 * tracing back appears to being downloaded by your server, or allows malicious php code
 * in remote html pages to be executed by your server with your account privileges.
 *
 * @var bool
 */
def("DOMPDF_ENABLE_REMOTE", true);

/**
 * The debug output log
 * @var string
 */
def("DOMPDF_LOG_OUTPUT_FILE", DOMPDF_FONT_DIR."log.htm");

/**
 * A ratio applied to the fonts height to be more like browsers' line height
 */
def("DOMPDF_FONT_HEIGHT_RATIO", 1.1);

/**
 * Enable CSS float
 *
 * Allows people to disabled CSS float support
 * @var bool
 */
def("DOMPDF_ENABLE_CSS_FLOAT", false);

/**
 * Enable the built in DOMPDF autoloader
 *
 * @var bool
 */
def("DOMPDF_ENABLE_AUTOLOAD", true);

/**
 * Prepend the DOMPDF autoload function to the spl_autoload stack
 *
 * @var bool
 */
def("DOMPDF_AUTOLOAD_PREPEND", false);

/**
 * Use the more-than-experimental HTML5 Lib parser
 */
def("DOMPDF_ENABLE_HTML5PARSER", false);
require_once(DOMPDF_LIB_DIR . "/html5lib/Parser.php");

// ### End of user-configurable options ###

/**
 * Load autoloader
 */
if (DOMPDF_ENABLE_AUTOLOAD) {
  require_once(DOMPDF_INC_DIR . "/autoload.inc.php");
  require_once(DOMPDF_LIB_DIR . "/php-font-lib/classes/Font.php");
}

/**
 * Ensure that PHP is working with text internally using UTF8 character encoding.
 */
mb_internal_encoding('UTF-8');

/**
 * Global array of warnings generated by DomDocument parser and
 * stylesheet class
 *
 * @var array
 */
global $_dompdf_warnings;
$_dompdf_warnings = array();

/**
 * If true, $_dompdf_warnings is dumped on script termination when using
 * dompdf/dompdf.php or after rendering when using the DOMPDF class.
 * When using the class, setting this value to true will prevent you from
 * streaming the PDF.
 *
 * @var bool
 */
global $_dompdf_show_warnings;
$_dompdf_show_warnings = false;

/**
 * If true, the entire tree is dumped to stdout in dompdf.cls.php.
 * Setting this value to true will prevent you from streaming the PDF.
 *
 * @var bool
 */
global $_dompdf_debug;
$_dompdf_debug = false;

/**
 * Array of enabled debug message types
 *
 * @var array
 */
global $_DOMPDF_DEBUG_TYPES;
$_DOMPDF_DEBUG_TYPES = array(); //array("page-break" => 1);

/* Optionally enable different classes of debug output before the pdf content.
 * Visible if displaying pdf as text,
 * E.g. on repeated display of same pdf in browser when pdf is not taken out of
 * the browser cache and the premature output prevents setting of the mime type.
 */
def('DEBUGPNG', false);
def('DEBUGKEEPTEMP', false);
def('DEBUGCSS', false);

/* Layout debugging. Will display rectangles around different block levels.
 * Visible in the PDF itself.
 */
def('DEBUG_LAYOUT', false);
def('DEBUG_LAYOUT_LINES', true);
def('DEBUG_LAYOUT_BLOCKS', true);
def('DEBUG_LAYOUT_INLINE', true);
def('DEBUG_LAYOUT_PADDINGBOX', true);
