* @copyright Copyright (c) 2003-2008 Concrete5. (http://www.concrete5.org)
* @license http://www.concrete5.org/license/ MIT License
*/
define("STRING_UTILS_CASE_FIRST_LOWER", 0);
define("STRING_UTILS_CASE_FIRST_UPPER", 1);
define("STRING_UTILS_CASE_HAS_LOWER", 2);
define("STRING_UTILS_CASE_HAS_UPPER", 4);
define("STRING_UTILS_CASE_HAS_NONALPH", 8);
define("STRING_UTILS_CASE_MIXED", 6);
define("STRING_UTILS_TRUNCATE_CHARS", '');
define("STRING_UTILS_TRUNCATE_WORDS", '\s+');
define("STRING_UTILS_TRUNCATE_SENTS", '[!.?]\s+');
define("STRING_UTILS_TRUNCATE_PARS", '\n{2,}');
class Concrete5_Helper_Validation_BannedWords {
public $bannedWords;
function getCSV_simple($file){
$lines = file($file);
$out = array();
foreach ($lines as $line) {
$aline = explode(",",$line);
$oline = array();
foreach ($aline as $val) {
$oline[] = trim($val);
}
$out[] = $oline;
}
return $out;
}
function loadBannedWords(){
if (isset($this->bannedWords)&&is_array($this->bannedWords)) return FALSE;
$file = DIR_BASE."/config/banned_words.txt";
if(!file_exists($file))
$file = DIR_BASE_CORE."/config/banned_words.txt";
if (!file_exists($file)) {
$this->errorMsg= t("Banned words list not found.");
return $this->errorMsg;
}
if (!is_readable($file)) {
$this->errorMsg = t("Banned words list has improper permissions.");
return $this->errorMsg;
}
$wb = ValidationBannedWordsHelper::getCSV_simple($file);
foreach ($wb as $aline) {
$this->bannedWords[$aline[0]] = $aline[1];
}
}
function wordCase($word){
$lower = "abcdefghijklmnopqrstuvwxyz";
$UPPER = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
$i = 0;
$case = 0;
while ($c = $word[$i]) {
if (strpos($lower,$c)!==FALSE) {
if ($i==0) {
$case |= STRING_UTILS_CASE_FIRST_LOWER;
} else {
$case |= STRING_UTILS_CASE_HAS_LOWER;
}
} else if (strpos($UPPER, $c)!==FALSE) {
if ($i==0) {
$case |= STRING_UTILS_CASE_FIRST_UPPER;
} else {
$case |= STRING_UTILS_CASE_HAS_UPPER;
}
} else {
$case |= STRING_UTILS_CASE_HAS_NONALPH;
}
$i++;
}
return $case;
}
function forceCase($case, &$word){
$word = strtolower($word);
if ($case & STRING_UTILS_CASE_FIRST_UPPER)
$word = ucfirst($word);
$c = $case & STRING_UTILS_CASE_MIXED;
$i = 1;
while ($word[$i]) {
if ($c==STRING_UTILS_CASE_HAS_UPPER ||
($c==STRING_UTILS_CASE_MIXED && !round(mt_rand(0,2)))
) {
$word[$i] = strtoupper($word[$i]);
}
$i++;
}
}
function isBannedWord(&$word){
$case = ValidationBannedWordsHelper::wordCase($word);
$nword = strtolower($word);
if ($msg = $this->loadBannedWords()) {
//print "$msg";
return FALSE;
}
if (isset($this->bannedWords[$nword])) {
$word = $this->bannedWords[$nword];
ValidationBannedWordsHelper::forceCase($case, $word);
return TRUE;
}
return FALSE;
}
function hasBannedWords(&$string){
$alpha = "abcdefghijklmnopqrstuvwxyz";
$alpha .= strtoupper($alpha);
$start = $end = 0;
$ra = 0;
$i = 0;
$out = 0;
while ($c = $string[$i]) {
if ($ra) {
if (strpos($alpha, $c)!==FALSE) {
} else {
$ra = 0;
$end = $i;
$word = substr($string, $start, $end-$start);
if ($this->isBannedWord($word)) {
$out++;
$string = substr($string, 0, $start).
$word.
substr($string,$end);
}
}
} else {
if (strpos($alpha, $c)!==FALSE) {
$ra = 1;
$start = $i;
} else {
}
}
$i++;
}
if ($ra) {
$word = substr($string, $start);
if ($this->isBannedWord($word)) {
$out++;
$string = substr($string, 0, $start).
$word;
}
}
if(strlen($this->errorMsg) && !$this->errorMsgDisplayed) {
//echo "$this->errorMsg
";
//$this->errorMsgDisplayed=1;
}
return $out;
}
function hasBannedPart($string){
if ($msg = $this->loadBannedWords()) {
print "$msg";
return FALSE;
}
$string = strtolower($string);
foreach ($this->bannedWords as $bw => $replacement) {
if (strpos($string, $bw)!==FALSE) return TRUE;
}
return FALSE;
}
function truncate($string, $num, $which=STRING_UTILS_TRUNCATE_CHARS, $ellipsis="…"){
$parts = preg_split("/($which)/", $string, -1, PREG_SPLIT_DELIM_CAPTURE);
$i = 0;
$out = "";
while (count($parts) && ++$i < $num ) {
$out .= array_shift($parts).array_shift($parts);
}
if (count($parts)) $out = trim($out).$ellipsis;
return $out;
}
public function getBannedKeys($inputArray) {
$error_keys = array();
if(is_array($inputArray) && count($inputArray)) {
foreach(array_keys($inputArray) as $k) {
if(is_string($inputArray[$k]) && $this->hasBannedWords( $inputArray[$k])) {
$error_keys[] = $k;
} elseif (is_array($inputArray[$k]) && count($inputArray[$k])) {
foreach($inputArray[$k] as $v) {
if($this->hasBannedWords($v)) {
$error_keys[] = $k;
break;
}
}
}
}
}
return $error_keys;
}
}