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This commit is contained in:
Brian Buller 2014-08-19 09:10:22 -05:00
parent d6e8a4ccd4
commit 3a2fa4f95e
13 changed files with 909 additions and 59 deletions
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4
app/config.json Normal file
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{
"default_controller":"welcome",
"debug":true
}

51
app/core/Anvil.php Executable file
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<?php if(!defined('APP_ROOT')) exit('No direct script access allowed');
require_once(APP_ROOT.'/core/Config.php');
require_once(APP_ROOT.'/core/Helpers.php');
require_once(APP_ROOT.'/core/Request.php');
require_once(APP_ROOT.'/core/Security.php');
require_once(APP_ROOT.'/core/Response.php');
require_once(APP_ROOT.'/core/Controller.php');
require_once(APP_ROOT.'/core/Model.php');
class Anvil {
public $config;
public $helpers;
public $request;
public $security;
public $response;
public $active_controller;
public function __construct() {
$this->config = new Config();
$this->helpers = new Helpers($this);
$this->request = new Request($this);
$this->response = new Response($this);
$this->security = new Security($this);
}
/**
* Strike the Anvil!
*/
public function strike() {
ob_start();
$uri_array = $this->request->uri_array;
$class_name = (!isset($uri_array[0]) || empty($uri_array[0]))
? $this->config->item('default_controller') : array_shift($uri_array);
$start_token = $this->config->item('starting_token');
while($start_token-- > 0) { array_shift($uri_array); }
$cc_name = '';
if(!file_exists(APP_ROOT.'/controllers/'.$class_name.'_controller.php')) {
$class_name = $this->config->item('default_controller');
}
$cc_name = $class_name.'_controller';
$this->active_controller = $class_name;
// Ok, pull in the requested Controller
require_once(APP_ROOT.'/controllers/'.$cc_name.'.php');
$c_class = new $cc_name($this);
$c_class->index();
// The controller should take care of the rest.
ob_end_flush();
}
}

52
app/core/Config.php Executable file
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<?php if(!defined('APP_ROOT')) exit('No direct script access allowed');
class Config {
private $config_file;
private $_items = array();
public function __construct() {
$this->config_file = APP_ROOT.'/config.json';
if(file_exists($this->config_file)) {
$cfg_raw = file_get_contents($this->config_file);
$this->_items = json_decode($cfg_raw, TRUE);
}
$this->_checkSetDefault('starting_token', 0);
$this->_checkSetDefault('charset', 'UTF-8');
$this->_checkSetDefault('csrf_protection', TRUE);
$this->_checkSetDefault('global_models', array());
$this->_checkSetDefault('global_libraries', array());
}
/**
* Checks to see if $this->_items[$key] is set,
* If not, sets it to $val
*/
private function _checkSetDefault($key, $val) {
if(!isset($this->_items[$key])) {
$this->_items[$key] = $val;
}
}
public function item($key=NULL, $val=NULL) {
if(is_array($key)) {
foreach($key as $k => $v) {
$this->item($k, $v);
}
}
if(isset($key)) {
if(isset($val)) {
// Setting
$this->_items[$key] = $val;
}
if(isset($this->_items[$key])) {
return $this->_items[$key];
}
}
return FALSE;
}
public function items() {
return $this->_items;
}
}

26
app/core/Controller.php Normal file → Executable file
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<?php <?php
class Controller { class Controller {
public function __construct() { } protected $anvil;
public $default_function = '';
public function __construct($a) {
$this->anvil = $a;
}
public function index() {
$func_name = $this->default_function;
if(isset($this->anvil->request->uri_array[0])) {
if($this->anvil->request->uri_array[0] == $this->anvil->active_controller) {
if(isset($this->anvil->request->uri_array[1])) {
$func_name = $this->anvil->request->uri_array[1];
}
} else if(!empty($this->anvil->request->uri_array[0])) {
$func_name = $this->anvil->request->uri_array[0];
}
}
if(method_exists($this, $func_name)) {
return $this->$func_name();
} else {
header("HTTP/1.0 404 Not Found");
echo "Page Not Found";
exit;
}
}
public function load_models($model=NULL) { public function load_models($model=NULL) {
$this->load_model($model); $this->load_model($model);

49
app/core/Helpers.php Executable file
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<?php if(!defined('APP_ROOT')) exit('No direct script access allowed');
/** A bunch of Helper Functions */
class Helpers {
private $_anvil;
public function __construct($a) {
$_anvil = $a;
}
/**
* Remove Invisible Characters
* This prevents sandwiching null characters
* between ascii characters, like Java\0script.
*
* @access public
* @param string
* @return string
*/
public function remove_invisible_characters($str, $url_encoded = TRUE) {
$non_displayables = array();
// Ever control char except newline (dec 10)
// carriage return (dec 13), and horizontal tab (dec 09)
if($url_encoded) {
$non_displayables[] = '/%0[0-8bcef]/'; // url encoded 00-08, 11, 12, 14, 15
$non_displayables[] = '/%1[0-9a-f]/'; // url encoded 16-31
}
$non_displayables[] = '/[\x00-\x08\x0B\x0C\x0E-\x1F\x7F]+/S'; // 00-08, 11, 12, 14-31, 127
do {
$str = preg_replace($non_displayables, '', $str, -1, $count);
} while($count);
return $str;
}
/**
* Returns HTML escaped variables
*
* @access public
* @param mixed
* @return mixed
*/
public function html_escape($var) {
if(is_array($var)) {
foreach($var as &$v) {
$v = $this->html_escape($v);
}
} else {
return htmlspecialchars($var, ENT_QUOTES, $this->_anvil->config->item('charset'));
}
}
}

0
app/core/Model.php Normal file → Executable file
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156
app/core/Request.php Executable file
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<?php
/* The URI Library is necessary for the framework
* to succesfully route
*/
class Request {
public $type;
public $parameters;
public $cookie;
public $files;
public $server;
public $uri_array;
private $_anvil;
private static $request_params = null;
public function __construct($a) {
$this->_anvil = $a;
$this->createFromGlobals();
}
public function createFromGlobals() {
$this->type = strtoupper($_SERVER['REQUEST_METHOD']);
if($this->type == 'GET') {
$this->parameters = $_GET;
} else {
$this->parameters = $this->process_data();
}
$this->cookie = $_COOKIE;
$this->files = $_FILES;
$this->server = $_SERVER;
$this->uri_array = $this->uriToArray();
}
/** Is this an HTTPS request? */
public function isSecure() {
return !(!isset($this->server['HTTPS'])
|| empty($this->server['HTTPS'])
|| strtolower($this->server['HTTPS']) === 'off');
}
/** Pull the JSON Payload **/
public function json() {
if(!self::$request_params) {
$payload = file_get_contents('php://input');
if(is_array($payload)) {
self::$request_params = $payload;
} else if((substr($payload, 0, 1) == "{")
&& (substr($payload, (strlen($payload)-1), 1) == "}")) {
self::$request_params = json_decode($payload);
} else {
parse_str($payload, self::$request_params);
}
}
return (object)self::$request_params;
}
public function post($index=NULL, $xss_clean=FALSE) {
return $this->process_data($index, $xss_clean);
}
public function put($index=NULL, $xss_clean=FALSE) {
return $this->process_data($index, $xss_clean);
}
public function patch($index=NULL, $xss_clean=FALSE) {
return $this->process_data($index, $xss_clean);
}
public function delete($index=NULL, $xss_clean=FALSE) {
return $this->process_data($index, $xss_clean);
}
public function process_data($index=NULL, $xss_clean=FALSE) {
$request_vars = (array)$this->json();
if($index==NULL && !empty($request_vars)) {
$post = array();
foreach(array_keys($request_vars) as $key) {
$post[$key] = $this->_fetch_from_array($request_vars, $key, $xss_clean);
}
return $post;
}
return $this->_fetch_from_array($request_vars, $index, $xss_clean);
}
private function _fetch_from_array(&$array, $index = '', $xss_clean = FALSE) {
if(!isset($array[$index])) {
return FALSE;
}
if($xss_clean === TRUE) {
}
return $array[$index];
}
public function setCookie($key, $val, $expire=0, $path='/', $domain=NULL, $secure=0) {
if($expire == 'never') {
// We can't do never... Set it to 10 years, should be good enough.
$expire = time()+60*60*24*365*10;
}
if(!isset($path) && ($this->_anvil->config->item('cookie_path') !== FALSE)) {
$path = $this->_anvil->config->item('cookie_path');
}
if(!isset($domain)) {
if($this->_anvil->config->item('cookie_domain') !== FALSE) {
$domain = $this->_anvil->config->item('cookie_domain');
} else {
$domain = $this->_anvil->request->server['HTTP_HOST'];
}
}
setcookie($key, $val, $expire, $path, $domain, $secure);
}
public function clearCookie($key) {
$this->setCookie($key, '', time()-3600*24*365);
}
/**
* URI Parsing Functions
*/
public function uriToArray($st = 0, $uri=NULL) {
$uri = (isset($uri)?$uri:$this->server['REQUEST_URI']);
if(substr($uri,0,10)=='/index.php') {
$uri = substr($uri,10);
}
$uri=substr($uri,1);
$uri_array = preg_split('^[\/\?]^', $uri);
$uri_array = array_slice($uri_array, $st);
return $uri_array;
}
/**
* Parse URI into key=>value pairs
*/
public function uriToPairs($st = 0, $uri=NULL) {
$uri = (isset($uri)?$uri:$this->server['REQUEST_URI']);
$uri_array = $this->uriToArray($st, $uri);
$pair_array = array();
$key = '';
foreach($uri_array as $a_val) {
if(empty($key)) {
$key = $a_val;
} else {
$pair_array[$key] = $a_val;
$key = '';
}
}
if(!empty($key)) {
$pair_array[$key] = '';
}
return $pair_array;
}
}
?>

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app/core/Response.php Normal file
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<?php
class Response {
private $_anvil;
public function __construct($a) {
$this->_anvil = $a;
}
public function redirect($url) {
header('Location: '.$url);
}
}
?>

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app/core/Security.php Executable file
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<?php if(!defined('APP_ROOT')) exit('No direct script access allowed');
/** Security Class
* Pretty heavily based on the CodeIgniter Security Class
*/
class Security {
/* Random Hash for protecting URLs */
protected $_xss_hash = '';
/* Random Hash for Cross-Site Request Forgery Protection Cookie (CSRFPC) */
protected $_csrf_hash = '';
/* Expiration time for CSRFPC */
protected $_csrf_expire = 7200;
/* Token name for CSRFPC */
protected $_csrf_token_name = 'anvil_csrf_token';
/* Cookie name for CSRFPC */
protected $_csrf_cookie_name = 'anvil_csrf_token';
/* List of never allowed strings */
protected $_never_allowed_str = array(
'document.cookie' => '[removed]',
'document.write' => '[removed]',
'.parentNode' => '[removed]',
'.innerHTML' => '[removed]',
'window.location' => '[removed]',
'-moz-binding' => '[removed]',
'<!--' => '&lt;!--',
'-->' => '--&gt;',
'<![CDATA[' => '&lt;![CDATA[',
'<comment>' => '&lt;comment&gt;'
);
/* List of never allowed regex replacement */
protected $_never_allowed_regex = array(
'javascript\s*:',
'expression\s*(\(|&\#40;)', // CSS and IE
'vbscript\s*:', // IE, surprise!
'Redirect\s+302',
"([\"'])?data\s*:[^\\1]*?base64[^\\1]*?,[^\\1]*?,[^\\1]*?\\1?"
);
protected $_anvil;
/* Constructor */
public function __construct($a) {
$this->_anvil = $a;
// Is CSRF protection enabled?
if($this->_anvil->config->item('csrf_protection')===TRUE) {
// Set the CSRF hash
$this->_csrf_set_hash();
}
// Security class initialized
}
/**
* Verify CSRF Protection
*/
public function csrf_verify() {
// If it's not a POST request we will set the CSRF cookie
if($this->_anvil->request->type !== 'POST') {
return $this->csrf_set_cookie();
}
// Do the tokens exist in both the POST params and COOKIE array?
if(isset($this->_anvil->request->parameters[$this->_csrf_token_name],
$this->_anvil->cookie[$this->_csrf_cookie_name])) {
$this->csrf_show_error();
}
// Do the tokens match?
if($this->_anvil->request->parameters[$this->_csrf_token_name] !=
$this->_anvil->request->cookie[$this->_csrf_cookie_name]) {
$this->csrf_show_error();
}
// We kill this since we're done and we don't want to polute the POST array
unset($this->_anvil->request->parameters[$this->_csrf_token_name]);
// None of these things should last forever
unset($this->_anvil->request->cookie[$this->_csrf_cookie_name]);
$this->_csrf_set_hash();
$this->csrf_set_cookie();
return $this;
}
/** Set CSRF Protection Cookie */
public function csrf_set_cookie() {
$expire = time() + $this->_csrf_expire;
$secure_cookie = ($this->_anvil->config->item('cookie_secure') === TRUE ? 1 : 0);
if($secure_cookie && !$this->_anvil->request->isSecure()) {
return FALSE;
}
$this->_anvil->request->setCookie($this->_csrf_cookie_name, $this->_csrf_hash, $expire, NULL, NULL, $secure_cookie);
return $this;
}
/* Get CSRF Hash */
public function get_csrf_hash() {
return $this->_csrf_hash;
}
/* Get CSRF Token Name */
public function get_csrf_token_name() {
return $this->_csrf_token_name;
}
/**
* XSS Clean
* Sanitizes data so that CSS hacks can be prevented.
* This function does a fair amount of work but it is
* extremely thorough, designed to prevent even the
* most obscure XSS attempts. Nothing is ever 100%
* foolproof, of course, but I haven't been able to
* get anything passed the filter.
*
* Note: This function should only be used to deal
* with data upon submission. It's not something that
* should be used for general runtime processing.
*
* @param mixed string or array
* @param bool
* @return string
*/
public function xss_clean($str, $is_image = FALSE) {
/* Is the string an array? */
if(is_array($str)) {
while(list($key) = each($str)) {
$str[$key] = $this->xss_clean($str[$key]);
}
return $str;
}
/* Remove Invisible Characters */
$str = remove_invisible_characters($str);
/* Validate Entities in URLs */
$str = $this->_validate_entities($str);
/* URL Decode
* Note: Use rawurldecode() so it does not remove plus signs
*/
$str = rawurldecode($str);
/* Convert character entities to ASCII
* This permits our tests below to work reliably
* We only convert entities that are within tags since
* these are the ones that will pose security problems
*/
$str = preg_replace_callback("/[a-z]+=([\'\"]).*?\\1/si", array($this, '_convert_attribute'), $str);
$str = preg_replace_callback("/<\w+.*?(?=>|<|$)/si", array($this, '_decode_entity'), $str);
/* Remove Invisible Characters AGAIN! */
$str = remove_invisible_characters($str);
/* Convert all tabs to spaces
* This prevents strings like this: ja vascript
* NOTE: we deal with spaces between characters later.
* NOTE: preg_replace was found to be amazingly slow here on
* large blocks of data, so we use str_replace.
*/
if(strpos($str, "\t") !== FALSE) {
$str = str_replace("\t", ' ', $str);
}
/* Capture converted string for later comparison */
$converted_string = $str;
/* Remove Strings that are never allowed */
$str = $this->_do_never_allowed($str);
/* Makes PHP tags safe
* Note: XML tags are inadvertently replaced too:
* <?xml
* But it doesn't seem to pose a problem.
*/
if($is_image === TRUE) {
/* Images have a tendency to have the PHP short opening and
* closing tags every so often so we skip those and only
* do the long opening tags.
*/
$str = preg_replace('/<\?(php)/i', "&lt;?\\1", $str);
} else {
$str = str_replace(array('<?', '?'.'>'), array('&lt;?', '?&gt;'), $str);
}
/* Compact any exploded words
* This corrects words like: j a v a s c r i p t
* These words are compacted back to their correct state.
*/
$words = array(
'javascript', 'expression', 'vbscript', 'script', 'base64',
'applet', 'alert', 'document', 'write', 'cookie', 'window'
);
foreach($words as $word) {
$temp = '';
for($i = 0, $wordlen = strlen($word); $i < $wordlen; $i++) {
$temp .= substr($word, $i, 1)."\s*";
}
// We only want to do this when it is followed by a non-word character
// That way valid stuff like "dealer to" does not become "dealerto"
$str = preg_replace_callback('#('.substr($temp, 0, -3).')(\W)#is', array($this, '_compact_exploded_words'), $str);
}
/* Remove disallowed Javascript in links or img tags */
do {
$original = $str;
if(preg_match("/<a/i", $str)) {
$str = preg_replace_callback("#<a\s+([^>]*?)(>|$)#si", array($this, '_js_link_removal'), $str);
}
if(preg_match("/<img/i", $str)) {
$str = preg_replace_callback("#<img\s+([^>]*?)(\s?/?\>|$)#si", array($this, '_js_img_removal'), $str);
}
if(preg_match("/script/i", $str) || preg_match("/xss/i", $str)) {
$str = preg_replace("#<(/*)(script|xss)(.*?)\>#si", '[removed]', $str);
}
} while($original != $str);
unset($original);
// Remove evil attributes such as style, onclick and xmlns
$str = $this->_remove_evil_attributes($str, $is_image);
/* Sanitize naughty HTML elements
* If a tag containing any of the words in the list
* below is found, the tag gets converted to entities.
* so this: <blink>
* becoms: &lt;blink&gt;
*/
$naughty = 'alert|applet|audio|basefont|base|behavior|bgsound|blink|body|embed|expression|form|frameset|frame|head|html|ilayer|iframe|input|isindex|layer|link|meta|object|plaintext|style|script|textarea|title|video|xml|xss';
$str = preg_replace_callback('#<(/*\s*)('.$naughty.')([^><]*)([><]*)#is', array($this, '_sanitize_naughty_html'), $str);
/* Sanitize naughty scripting elements
* Similar to above, only instead of looking for
* tags it looks for PHP and JavaScript commands
* that are disallowed. Rather than removing the
* code, it simply converts the parenthesis to
* entities rendering the code un-executable.
* so this: eval('some code')
* becomes: eval&#40;'some code'&#41;
*/
$str = preg_replace('#(alert|cmd|passthru|eval|exec|expression|system|fopen|fsockopen|file|file_get_contents|readfile|unlink)(\s*)\((.*?)\)#si', "\\1\\2&#40;\\3&#41;", $str);
/* Final clean up
* This adds a bit of extra precaution in case
* something got through the above filters
*/
$str = $this->_do_never_allowed($str);
/* Images are handled in a special way
* - Essentially, we want to know that after all of the character
* conversion is done whether any unwanted, likely XSS, code was found.
* If not, we return TRUE, as the image is clean.
* However, if the string post-conversion does not match the
* string post-removal of XSS, then it fails, as there was unwanted XSS
* code found and removed/changed during processing
*/
if($is_image === TRUE) {
return ($str == $converted_string)?TRUE:FALSE;
}
return $str;
}
/**
* Random Hash for protecting URLs
* @return string
*/
public function xss_hash() {
if($this->_xss_hash == '') {
mt_srand();
$this->_xss_hash = md5(time() + mt_rand(0, 1999999999));
}
return $this->_xss_hash;
}
/**
* HTML Entities Decode
* This function is a replacement for html_entity_decode()
* The reason we are not using html_entity_decode() by itself is
* because while it is not technically correct to leave out the
* semicolon at the end of an entity most browsers will still interpret
* the entity correctly. html_entity_decode() does not convert entities
* without semicolons, so we are left with our own little solution here.
*
* @param string
* @param string
* @return string
*/
public function entity_decode($str, $charset='UTF-8') {
if(stristr($str, '&') === FALSE) {
return $str;
}
$str = html_entity_decode($str, ENT_COMPAT, $charset);
$str = preg_replace('~&#x(0*[0-9a-f]{2,5})~ei', 'chr(hexdec("\\1"))', $str);
return preg_replace('~&#([0-9]{2,4})~e', 'chr(\\1)', $str);
}
/**
* Filename Security
*
* @param string
* @param bool
* @return string
*/
public function sanitize_filename($str, $relative_path = FALSE) {
$bad = array( "../", "<!--", "-->", "<",
">", "'", '"', '&', '$', '#',
'{', '}', '[', ']', '=', ';',
'?', "%20", "%22", "%3c", "%253c",
"%3e", "%0e", "%28", "%29", "%2528",
"%26", "%24", "%3f", "%3b", "%3d"
);
if(!$relateive_path) {
$bad[] = './';
$bad[] = '/';
}
$str = remove_invisible_characters($str, FALSE);
return stripslashes(str_replace($bad, '', $str));
}
/**
* Compact Exploded Words
* Callback function for xss_clean() to remove whitespace from
* things like j a v a s c r i p t
*
* @param type
* @return type
*/
protected function _compact_exploded_words($matches) {
return preg_replace('/\s+/s', '', $matches[1]).$matches[2];
}
/**
* Remove Evil HTML Attributes (like eventhandlers and style)
* Removes the evil attribute and either:
* - Everything up until a space
* For example, everything between the pipes:
* <a |style=document.write('hello');alert('world');| class=link>
* - Everything inside the quotes
* For example, everything between the pipes:
* <a |style="document.write('hello'); alert('world');"| class="link">
*
* @param string $str The string to check
* @param boolean $is_image TRUE if this is an image
* @return string The string with the evil attributes removed
*/
protected function _remove_evil_attributes($str, $is_image) {
// All javascript event handlers (e.g. onload, onclick, onmouseover), style, and xmlns
$evil_attributes = array('on\w*', 'style', 'xmlns', 'formaction');
if($is_image===TRUE) {
/* Adobe Photoshop puts XML metadata into JFIF images,
* including namespacing, so we have to allow this for images.
*/
unset($evil_attributes[array_search('xmlns', $evil_attributes)]);
}
do {
$count = 0;
$attribs = array();
// Find occurrences of illegal attribute string with quotes (042 and 047 are octal quotes)
preg_match_all('/('.implode('|', $evil_attributes).')\s*=\s*(\042|\047)([^\\2]*?)(\\2)/is', $str, $matches, PREG_SET_ORDER);
foreach ($matches as $attr) {
$attribs[] = preg_quote($attr[0], '/');
}
// find occurrences of illegal attribute strings without quotes
preg_match_all('/('.implode('|', $evil_attributes).')\s*=\s*([^\s>]*)/is', $str, $matches, PREG_SET_ORDER);
foreach ($matches as $attr) {
$attribs[] = preg_quote($attr[0], '/');
}
// replace illegal attribute strings that are inside an html tag
if (count($attribs) > 0) {
$str = preg_replace('/(<?)(\/?[^><]+?)([^A-Za-z<>\-])(.*?)('.implode('|', $attribs).')(.*?)([\s><]?)([><]*)/i', '$1$2 $4$6$7$8', $str, -1, $count);
}
} while($count);
return $str;
}
/**
* Sanitize Naughty HTML
* Callback function for xss_clean() to remove naughty HTML elements
*
* @param array
* @return string
*/
protected function _sanitize_naughty_html($matches) {
// encode opening brace
$str = '&lt;'.$matches[1].$matches[2].$matches[3];
// encode captured opening or closing brace to prevent recursive vectors
$str .= str_replace(array('>', '<'), array('&gt;', '&lt;'),
$matches[4]);
return $str;
}
/**
* JS Link Removal
* Callback function for xss_clean() to sanitize links
* This limits the PCRE backtracks, making it more performance friendly
* and prevents PREG_BACKTRACK_LIMIT_ERROR from being triggered in
* PHP 5.2+ on link-heavy strings
*
* @param array
* @return string
*/
protected function _js_link_removal($match) {
return str_replace(
$match[1],
preg_replace(
'#href=.*?(alert\(|alert&\#40;|javascript\:|livescript\:|mocha\:|charset\=|window\.|document\.|\.cookie|<script|<xss|data\s*:)#si',
'',
$this->_filter_attributes(str_replace(array('<', '>'), '', $match[1]))
),
$match[0]
);
}
/**
* JS Image Removal
* Callback function for xss_clean() to sanitize image tags
* This limits the PCRE backtracks, making it more performance friendly
* and prevents PREG_BACKTRACK_LIMIT_ERROR from being triggered in
* PHP 5.2+ on image tag heavy strings
*
* @param array
* @return string
*/
protected function _js_img_removal($match) {
return str_replace(
$match[1],
preg_replace(
'#src=.*?(alert\(|alert&\#40;|javascript\:|livescript\:|mocha\:|charset\=|window\.|document\.|\.cookie|<script|<xss|base64\s*,)#si',
'',
$this->_filter_attributes(str_replace(array('<', '>'), '', $match[1]))
),
$match[0]
);
}
/**
* Attribute Conversion
* Used as a callback for XSS Clean
*
* @param array
* @return string
*/
protected function _convert_attribute($match) {
return str_replace(array('>', '<', '\\'), array('&gt;', '&lt;', '\\\\'), $match[0]);
}
/**
* Filter Attributes
* Filters tag attributes for consistency and safety
*
* @param string
* @return string
*/
protected function _filter_attributes($str) {
$out = '';
if (preg_match_all('#\s*[a-z\-]+\s*=\s*(\042|\047)([^\\1]*?)\\1#is', $str, $matches)) {
foreach ($matches[0] as $match) {
$out .= preg_replace("#/\*.*?\*/#s", '', $match);
}
}
return $out;
}
/**
* HTML Entity Decode Callback
* Used as a callback for XSS Clean
*
* @param array
* @return string
*/
protected function _decode_entity($match) {
return $this->entity_decode($match[0], strtoupper(config_item('charset')));
}
/**
* Validate URL entities
* Called by xss_clean()
*
* @param string
* @return string
*/
protected function _validate_entities($str) {
/* Protect GET variables in URLs */
// 901119URL5918AMP18930PROTECT8198
$str = preg_replace('|\&([a-z\_0-9\-]+)\=([a-z\_0-9\-]+)|i', $this->xss_hash()."\\1=\\2", $str);
/* Validate standard character entities
* Add a semicolon if missing. We do this to enable
* the conversion of entities to ASCII later.
*/
$str = preg_replace('#(&\#?[0-9a-z]{2,})([\x00-\x20])*;?#i', "\\1;\\2", $str);
/* Validate UTF16 two byte encoding (x00)
* Just as above, adds a semicolon if missing.
*/
$str = preg_replace('#(&\#x?)([0-9A-F]+);?#i',"\\1\\2;",$str);
/* Un-Protect GET variables in URLs */
$str = str_replace($this->xss_hash(), '&', $str);
return $str;
}
/**
* Do Never Allowed
* A utility function for xss_clean()
*
* @param string
* @return string
*/
protected function _do_never_allowed($str) {
$str = str_replace(array_keys($this->_never_allowed_str), $this->_never_allowed_str, $str);
foreach ($this->_never_allowed_regex as $regex) {
$str = preg_replace('#'.$regex.'#is', '[removed]', $str);
}
return $str;
}
/**
* Set Cross Site Request Forgery Protection Cookie
*
* @return string
*/
protected function _csrf_set_hash() {
if ($this->_csrf_hash == '') {
// If the cookie exists we will use it's value.
// We don't necessarily want to regenerate it with
// each page load since a page could contain embedded
// sub-pages causing this feature to fail
if (isset($_COOKIE[$this->_csrf_cookie_name]) &&
preg_match('#^[0-9a-f]{32}$#iS', $_COOKIE[$this->_csrf_cookie_name]) === 1) {
return $this->_csrf_hash = $_COOKIE[$this->_csrf_cookie_name];
}
return $this->_csrf_hash = md5(uniqid(rand(), TRUE));
}
return $this->_csrf_hash;
}
}

0
app/core/index.php Normal file → Executable file
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0
app/core/uri_library.php Normal file → Executable file
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58
index.php
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@ -1,58 +0,0 @@
<?php
define("PHP_ROOT","");
define("APP_ROOT","app");
require_once(APP_ROOT.'/config.php');
// Load up the base classes
require_once(APP_ROOT.'/core/Controller.php');
require_once(APP_ROOT.'/core/Model.php');
// We need the uri library for things to work
require_once(APP_ROOT.'/core/uri_library.php');
// Load up the globals
foreach($global_libraries as $alib) {
require_once(APP_ROOT.'/libraries/'.$alib.'_library.php');
}
foreach($global_models as $amod) {
require_once(APP_ROOT.'/models/'.$amod.'_model.php');
}
// Buffer all output for speed!
ob_start();
$uri = new Uri_library($_SERVER['REQUEST_URI']);
$uri_array = $uri->getFullArray();
$class_name = (!isset($uri_array[0]) || empty($uri_array[0]))?$default_controller:array_shift($uri_array);
while($starting_token-- > 0) { array_shift($uri_array); }
// Check if $uri->getItem(0) is a controller
if(file_exists(APP_ROOT.'/controllers/'.$class_name.'_controller.php')) {
// File exists, set the cc_name and pop the uri_array
$cc_name = $class_name."_controller";
} else {
// Not a valid controller, so 404d!
header("HTTP/1.0 404 Not Found");
echo "Page Not Found";
exit;
// $cc_name = $default_controller."_controller";
}
// Pull in the requested Controller
require_once(APP_ROOT.'/controllers/'.$cc_name.'.php');
$c_class = new $cc_name;
// Were we provided a method?
$c_func = (!isset($uri_array[0]) || empty($uri_array[0]))?"index":array_shift($uri_array);
if($c_func!==false && method_exists($c_class, $c_func)) {
call_user_func_array(array($c_class, $c_func), $uri_array);
} else {
// Nope, hit the controller's index
if(method_exists($c_class, 'index')) {
call_user_func_array(array($c_class, "index"), $uri_array);
}
}
// Flush the buffer
ob_end_flush();
?>

10
public/index.php Normal file
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<?php
define("PHP_ROOT","../");
define("APP_ROOT","../app");
require_once(APP_ROOT.'/core/Anvil.php');
$anvil = new Anvil();
$anvil->strike();
return;