Imported from /home/lorry/working-area/delta_php2/php-5.4.13.tar.bz2.HEADphp-5.4.13master

1 files changed, 373 insertions, 0 deletions

diff --git a/scripts/dev/check_parameters.php b/scripts/dev/check_parameters.php
new file mode 100644
index 0000000..c9f5169
--- /dev/null
+++ b/scripts/dev/check_parameters.php
@@ -0,0 +1,373 @@
+<?php
+/*
+  +----------------------------------------------------------------------+
+  | PHP Version 5                                                        |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 1997-2007 The PHP Group                                |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Author: Nuno Lopes <nlopess@php.net>                                 |
+  +----------------------------------------------------------------------+
+*/
+
+/* $Id$ */
+
+
+define('REPORT_LEVEL', 2); // 0 reports less false-positives. up to level 5.
+define('VERSION', '5.2');  // minimum is 5.2
+define('PHPDIR', realpath(dirname(__FILE__) . '/../..'));
+
+
+// be sure you have enough memory and stack for PHP. pcre will push the limits!
+ini_set('pcre.backtrack_limit', 10000000);
+
+
+// ------------------------ end of config ----------------------------
+
+
+$API_params = array(
+	'a' => array('zval**'), // array as zval*
+	'b' => array('zend_bool*'), // boolean
+	'C' => array('zend_class_entry**'), // class
+	'd' => array('double*'), // double
+	'f' => array('zend_fcall_info*', 'zend_fcall_info_cache*'), // function
+	'h' => array('HashTable**'), // array as an HashTable*
+	'l' => array('long*'), // long
+	'o' => array('zval**'), //object
+	'O' => array('zval**', 'zend_class_entry*'), // object of given type
+	'r' => array('zval**'), // resource
+	's' => array('char**', 'int*'), // string
+	'z' => array('zval**'), // zval*
+	'Z' => array('zval***') // zval**
+);
+
+// specific to PHP >= 6
+if (version_compare(VERSION, '6', 'ge')) {
+	$API_params['S'] = $API_params['s']; // binary string
+	$API_params['t'] = array('zstr*', 'int*', 'zend_uchar*'); // text
+	$API_params['T'] = $API_params['t'];
+	$API_params['u'] = array('UChar**', 'int*'); // unicode
+	$API_params['U'] = $API_params['u'];
+}
+
+
+/** reports an error, according to its level */
+function error($str, $level = 0)
+{
+	global $current_file, $current_function, $line;
+
+	if ($level <= REPORT_LEVEL) {
+		if (strpos($current_file,PHPDIR) === 0) {
+			$filename = substr($current_file, strlen(PHPDIR)+1); 
+		} else {
+			$filename = $current_file;
+		}
+		echo $filename , " [$line] $current_function : $str\n";
+	}
+}
+
+
+/** this updates the global var $line (for error reporting) */
+function update_lineno($offset)
+{
+	global $lines_offset, $line;
+
+	$left  = 0;
+	$right = $count = count($lines_offset)-1;
+
+	// a nice binary search :)
+	do {
+		$mid = intval(($left + $right)/2);
+		$val = $lines_offset[$mid];
+
+		if ($val < $offset) {
+			if (++$mid > $count || $lines_offset[$mid] > $offset) {
+				$line = $mid;
+				return;
+			} else {
+				$left = $mid;
+			}
+		} else if ($val > $offset) {
+			if ($lines_offset[--$mid] < $offset) {
+				$line = $mid+1;
+				return;
+			} else {
+				$right = $mid;
+			}
+		} else {
+			$line = $mid+1;
+			return;
+		}
+	} while (true);
+}
+
+
+/** parses the sources and fetches its vars name, type and if they are initialized or not */
+function get_vars($txt)
+{
+	$ret =  array();
+	preg_match_all('/((?:(?:unsigned|struct)\s+)?\w+)(?:\s*(\*+)\s+|\s+(\**))(\w+(?:\[\s*\w*\s*\])?)\s*(?:(=)[^,;]+)?((?:\s*,\s*\**\s*\w+(?:\[\s*\w*\s*\])?\s*(?:=[^,;]+)?)*)\s*;/S', $txt, $m, PREG_SET_ORDER);
+
+	foreach ($m as $x) {
+		// the first parameter is special
+		if (!in_array($x[1], array('else', 'endif', 'return'))) // hack to skip reserved words
+			$ret[$x[4]] = array($x[1] . $x[2] . $x[3], $x[5]);
+
+		// are there more vars?
+		if ($x[6]) {
+			preg_match_all('/(\**)\s*(\w+(?:\[\s*\w*\s*\])?)\s*(=?)/S', $x[6], $y, PREG_SET_ORDER);
+			foreach ($y as $z) {
+				$ret[$z[2]] = array($x[1] . $z[1], $z[3]);
+			}
+		}
+	}
+
+//	if ($GLOBALS['current_function'] == 'for_debugging') { print_r($m);print_r($ret); }
+	return $ret;
+}
+
+
+/** run diagnostic checks against one var. */
+function check_param($db, $idx, $exp, $optional)
+{
+	global $error_few_vars_given;
+
+	if ($idx >= count($db)) {
+		if (!$error_few_vars_given) {
+			error("too few variables passed to function");
+			$error_few_vars_given = true;
+		}
+		return;
+	} elseif ($db[$idx][0] === '**dummy**') {
+		return;
+	}
+
+	if ($db[$idx][1] != $exp) {
+		error("{$db[$idx][0]}: expected '$exp' but got '{$db[$idx][1]}' [".($idx+1).']');
+	}
+
+	if ($optional && !$db[$idx][2]) {
+		error("optional var not initialized: {$db[$idx][0]} [".($idx+1).']', 1);
+
+	} elseif (!$optional && $db[$idx][2]) {
+		error("not optional var is initialized: {$db[$idx][0]} [".($idx+1).']', 2);
+	}
+}
+
+
+/** fetch params passed to zend_parse_params*() */
+function get_params($vars, $str)
+{
+	$ret = array();
+	preg_match_all('/(?:\([^)]+\))?(&?)([\w>.()-]+(?:\[\w+\])?)\s*,?((?:\)*\s*=)?)/S', $str, $m, PREG_SET_ORDER);
+
+	foreach ($m as $x) {
+		$name = $x[2];
+
+		// little hack for last parameter
+		if (strpos($name, '(') === false) {
+			$name = rtrim($name, ')');
+		}
+
+		if (empty($vars[$name][0])) {
+			error("variable not found: '$name'", 3);
+			$ret[][] = '**dummy**';
+
+		} else {
+			$ret[] = array($name, $vars[$name][0] . ($x[1] ? '*' : ''), $vars[$name][1]);
+		}
+
+		// the end (yes, this is a little hack :P)
+		if ($x[3]) {
+			break;
+		}
+	}
+
+//	if ($GLOBALS['current_function'] == 'for_debugging') { var_dump($m); var_dump($ret); }
+	return $ret;
+}
+
+
+/** run tests on a function. the code is passed in $txt */
+function check_function($name, $txt, $offset)
+{
+	global $API_params;
+
+	if (preg_match_all('/zend_parse_parameters(?:_ex\s*\([^,]+,[^,]+|\s*\([^,]+),\s*"([^"]*)"\s*,\s*([^{;]*)/S', $txt, $matches, PREG_SET_ORDER | PREG_OFFSET_CAPTURE)) {
+
+		$GLOBALS['current_function'] = $name;
+
+		foreach ($matches as $m) {
+			$GLOBALS['error_few_vars_given'] = false;
+			update_lineno($offset + $m[2][1]);
+
+			$vars = get_vars(substr($txt, 0, $m[0][1])); // limit var search to current location
+			$params = get_params($vars, $m[2][0]);
+			$optional = $varargs = false;
+			$last_last_char = $last_char = '';
+			$j = -1;
+			$len = strlen($m[1][0]);
+
+			for ($i = 0; $i < $len; ++$i) {
+				switch($char = $m[1][0][$i]) {
+					// separator for optional parameters
+					case '|':
+						if ($optional) {
+							error("more than one optional separator at char #$i");
+						} else {
+							$optional = true;
+							if ($i == $len-1) {
+								error("unnecessary optional separator");
+							}
+						}
+					break;
+
+					// separate_zval_if_not_ref
+					case '/':
+						if (!in_array($last_char, array('r', 'z'))) {
+							error("the '/' specifier cannot be applied to '$last_char'");
+						}
+					break;
+
+					// nullable arguments
+					case '!':
+						if (!in_array($last_char, array('a', 'C', 'f', 'h', 'o', 'O', 'r', 's', 't', 'z', 'Z'))) {
+							error("the '!' specifier cannot be applied to '$last_char'");
+						}
+					break;
+
+					case '&':
+						if (version_compare(VERSION, '6', 'ge')) {
+							if ($last_char == 's' || ($last_last_char == 's' && $last_char == '!')) {
+								check_param($params, ++$j, 'UConverter*', $optional);
+
+							} else {
+								error("the '&' specifier cannot be applied to '$last_char'");
+							}
+						} else {
+							error("unknown char ('&') at column $i");
+						}
+					break;
+
+					case '+':
+					case '*':
+						if (version_compare(VERSION, '6', 'ge')) {
+							if ($varargs) {
+								error("A varargs specifier can only be used once. repeated char at column $i");
+							} else {
+								check_param($params, ++$j, 'zval****', $optional);
+								check_param($params, ++$j, 'int*', $optional);
+								$varargs = true;
+							}
+						} else {
+							error("unknown char ('$char') at column $i");
+						}
+					break;
+
+					default:
+						if (isset($API_params[$char])) {
+							foreach($API_params[$char] as $exp) {
+								check_param($params, ++$j, $exp, $optional);
+							}
+						} else {
+							error("unknown char ('$char') at column $i");
+						}
+				}
+
+				$last_last_char = $last_char;
+				$last_char = $char;
+			}
+		}
+	}
+}
+
+
+/** the main recursion function. splits files in functions and calls the other functions */
+function recurse($path)
+{
+	foreach (scandir($path) as $file) {
+		if ($file == '.' || $file == '..' || $file == 'CVS') continue;
+
+		$file = "$path/$file";
+		if (is_dir($file)) {
+			recurse($file);
+			continue;
+		}
+
+		// parse only .c and .cpp files
+		if (substr_compare($file, '.c', -2) && substr_compare($file, '.cpp', -4)) continue;
+
+		$txt = file_get_contents($file);
+		// remove comments (but preserve the number of lines)
+		$txt = preg_replace(array('@//.*@S', '@/\*.*\*/@SsUe'), array('', 'preg_replace("/[^\r\n]+/S", "", \'$0\')'), $txt);
+
+
+		$split = preg_split('/PHP_(?:NAMED_)?(?:FUNCTION|METHOD)\s*\((\w+(?:,\s*\w+)?)\)/S', $txt, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_OFFSET_CAPTURE);
+
+		if (count($split) < 2) continue; // no functions defined on this file
+		array_shift($split); // the first part isn't relevant
+
+
+		// generate the line offsets array
+		$j = 0;
+		$lines = preg_split("/(\r\n?|\n)/S", $txt, -1, PREG_SPLIT_DELIM_CAPTURE);
+		$lines_offset = array();
+
+		for ($i = 0; $i < count($lines); ++$i) {
+			$j += strlen($lines[$i]) + strlen(@$lines[++$i]);
+			$lines_offset[] = $j;
+		}
+
+		$GLOBALS['lines_offset'] = $lines_offset;
+		$GLOBALS['current_file'] = $file;
+
+
+		for ($i = 0; $i < count($split); $i+=2) {
+			// if the /* }}} */ comment is found use it to reduce false positives
+			// TODO: check the other indexes
+			list($f) = preg_split('@/\*\s*}}}\s*\*/@S', $split[$i+1][0]);
+			check_function(preg_replace('/\s*,\s*/S', '::', $split[$i][0]), $f, $split[$i][1]);
+		}
+	}
+}
+
+$dirs = array();
+
+if (isset($argc) && $argc > 1) {
+	if ($argv[1] == '-h' || $argv[1] == '-help' || $argv[1] == '--help') {
+		echo <<<HELP
+Synopsis:
+    php check_parameters.php [directories]
+
+HELP;
+		exit(0);
+	}
+	for ($i = 1; $i < $argc; $i++) {
+		$dirs[] = $argv[$i];
+	}
+} else { 
+	$dirs[] = PHPDIR;
+}
+
+foreach($dirs as $dir) {
+	if (is_dir($dir)) {
+		if (!is_readable($dir)) {
+			echo "ERROR: directory '", $dir ,"' is not readable\n";
+			exit(1);
+		}
+	} else {
+		echo "ERROR: bogus directory '", $dir ,"'\n";
+		exit(1);
+	}
+}
+
+foreach ($dirs as $dir) {
+	recurse(realpath($dir));
+}