<?php
/**
 * These are the functions that setup needs before the database can be accessed (so it can't include
 * functions.php because that will cause a database connect error.)
 * @package setup
 */

include('version.php'); // Include the version info.
$const_webpath = dirname(dirname($_SERVER['SCRIPT_NAME']));
$const_webpath = str_replace("\\", '/', $const_webpath);
if ($const_webpath == '/') $const_webpath = '';
if (!defined('WEBPATH')) { define('WEBPATH', $const_webpath); }
if (!defined('SERVERPATH')) { define('SERVERPATH', dirname(dirname(__FILE__))); }
if (!defined('ZENFOLDER')) { define('ZENFOLDER', 'zp-core'); }
if (!defined('THEMEFOLDER')) {define("THEMEFOLDER", 'themes'); }

function zp_getCookie($name) {
	if (isset($_SESSION[$name])) { return $_SESSION[$name]; }
	if (isset($_COOKIE[$name])) { return $_COOKIE[$name]; }
	return false;
}

function zp_setCookie($name, $value, $time=0, $path='/') {
	setcookie($name, $value, $time, $path);
	if ($time < 0) {
		unset($_SESSION[$name]);
		unset($_COOKIE[$name]);
	} else {
		$_SESSION[$name] = $value;
		$_COOKIE[$name] = $value;
	}
}
$_options = array();
function getOption($key) {
	global $_options;
	if (isset($_options[$key])) return $_options[$key];
	return NULL;
}

function setOption($key, $value, $persistent=true) {
	global $_options;
	$_options[$key] = $value;
}

function generateListFromArray($currentValue, $list) {
	$localize = !is_numeric(array_shift(array_keys($list)));
	if ($localize) {
		$list = array_flip($list);
		natcasesort($list);
		$list = array_flip($list);
	} else {
		natcasesort($list);
	}
	foreach($list as $key=>$item) {
		echo '<option value="' . $item . '"';
		$inx = array_search($item, $currentValue);
		if ($inx !== false) {
			echo ' selected="selected"';
		}
		if ($localize) $display = $key; else $display = $item;
		echo '>' . $display . "</option>"."\n";
	}
}

function sanitize($input_string, $sanitize_level=0) {
	if ($sanitize_level === false) {
		$sanitize_level = 0;
	} else if ($sanitize_level === true) {
		$sanitize_level = 2;
	}

	if (empty($sanitize_level) || !is_numeric($sanitize_level)) {
		$sanitize_level = 0;
	}

	if (is_array($input_string)) {
		foreach ($input_string as $output_key => $output_value) {
			$output_string[$output_key] = sanitize_string($output_value, $sanitize_level);
		}
		unset($output_key, $output_value);
	} else {
		$output_string = sanitize_string($input_string, $sanitize_level);
	}
	return $output_string;
}

function sanitize_string($input_string, $sanitize_level) {
	if (get_magic_quotes_gpc()) $input_string = stripslashes($input_string);

	if ($sanitize_level === 0) {
		$input_string = str_replace(chr(0), " ", $input_string);

	} else if ($sanitize_level === 1) {
		$allowed_tags = "(".getOption('allowed_tags').")";
		$allowed = parseAllowedTags($allowed_tags);
		if ($allowed === false) { $allowed = array(); }
		$input_string = kses($input_string, $allowed);

	} else if ($sanitize_level === 2) {
		$allowed = array();
		$input_string = kses($input_string, $allowed);
	}
	return $input_string;
}

function printAdminFooter() {
	echo "<div id=\"footer\">";
	echo "\n  <a href=\"http://www.zenphoto.org\" title=\"".gettext('A simpler web photo album')."\">zen<strong>photo</strong></a>";
	echo " | <a href=\"http://www.zenphoto.org/support/\" title=\"".gettext('Forum').'">'.gettext('Forum')."</a> | <a href=\"http://www.zenphoto.org/trac/\" title=\"Trac\">Trac</a> | <a href=\"changelog.html\" title=\"".gettext('View Changelog')."\">Changelog</a>\n</div>";
}

function debugLog($message, $reset=false) {
	if ($reset) { $mode = 'w'; } else { $mode = 'a'; }
	$f = fopen(SERVERPATH . '/' . ZENFOLDER . '/debug_log.txt', $mode);
	fwrite($f, $message . "\n");
	fclose($f);
}

function debugLogArray($name, $source) {
	$msg = "Array $name( ";
	if (is_array($source)) {
		if (count($source) > 0) {
			foreach ($source as $key => $val) {
				if (strlen($msg) > 72) {
					debugLog($msg);
					$msg = '';
				}
				$msg .= $key . " => " . $val . ", ";
			}
			$msg = substr($msg, 0, strrpos($msg, ',')) . " )";
		} else {
			$msg .= ")";
		}
		debugLog($msg);
	} else {
		debugLog($msg . ")");
	}
}

function debugLogBacktrace($message) {
	debugLog("Backtrace: $message");
	// Get a backtrace.
	$bt = debug_backtrace();
	array_shift($bt); // Get rid of debug_backtrace in the backtrace.
	$prefix = '';
	$line = '';
	$caller = '';
	foreach($bt as $b) {
		$caller = (isset($b['class']) ? $b['class'] : '')	. (isset($b['type']) ? $b['type'] : '')	. $b['function'];
		if (!empty($line)) { // skip first output to match up functions with line where they are used.

			$msg = $prefix . ' from ';
			debugLog($msg.$caller.' ('.$line.')');
			$prefix .= '  ';
		} else {
			debugLog($caller.' called');
		}
		$line = basename($b['file'])	. ' [' . $b['line'] . "]";
	}
	if (!empty($line)) {
		debugLog($prefix.' from '.$line);
	}
}

?>