function pickRandom()
{
better_srand();
// Start with a good seed.
$this->filename = $this->imageList[array_rand($this->imageList)];
//trigger_error(sprintf(_("random image chosen: %s"),
// $this->filename),
// E_USER_NOTICE); //debugging
return $this->filename;
}
function run($dbi, $argstr, &$request, $basepage)
{
$args = $this->getArgs($argstr, $request);
extract($args);
// fix deprecated arg
if (is_integer($pages)) {
$numpages = $pages;
$pages = false;
// fix new pages handling in arg preprozessor.
} elseif (is_array($pages)) {
$numpages = (int) $pages[0];
if ($numpages > 0 and !$dbi->isWikiPage($numpages)) {
$pages = false;
} else {
$numpages = 1;
}
}
$allpages = $dbi->getAllPages(false, $sortby, $limit, $exclude);
$pagearray = $allpages->asArray();
better_srand();
// Start with a good seed.
if ($numpages == 1 && $pagearray) {
$page = $pagearray[array_rand($pagearray)];
$pagename = $page->getName();
if ($redirect) {
$request->redirect(WikiURL($pagename, false, 'absurl'));
}
// noreturn
if ($hidename) {
return WikiLink($pagename, false, _("RandomPage"));
} else {
return WikiLink($pagename);
}
}
$numpages = min(max(1, (int) $numpages), 20, count($pagearray));
$pagelist = new PageList($info, $exclude, $args);
$shuffle = array_rand($pagearray, $numpages);
if (is_array($shuffle)) {
foreach ($shuffle as $i) {
if (isset($pagearray[$i])) {
$pagelist->addPage($pagearray[$i]);
}
}
} else {
// if $numpages = 1
if (isset($pagearray[$shuffle])) {
$pagelist->addPage($pagearray[$shuffle]);
}
}
return $pagelist;
}
function get_dictionary_word()
{
// Load In the Word List
$fp = fopen(findfile("lib/captcha/dictionary"), "r");
while (!feof($fp)) {
$text[] = trim(fgets($fp, 1024));
}
fclose($fp);
// Pick a Word
$word = "";
better_srand();
while (strlen(trim($word)) == 0) {
if (function_exists('mt_rand')) {
$x = mt_rand(0, count($text));
} else {
$x = rand(0, count($text));
}
return $text[$x];
}
}
function rand_ascii_readable($length = 6)
{
// Pick a few random letters or numbers
$word = "";
better_srand();
// Don't use 1lI0O, because they're hard to read
$letters = "abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ23456789";
$letter_len = strlen($letters);
for ($i = 0; $i < $length; $i++) {
if (function_exists('mt_rand')) {
$word .= $letters[mt_rand(0, $letter_len - 1)];
} else {
$word .= $letters[rand(0, $letter_len - 1)];
}
}
return $word;
}
function random_good_password($minlength = 5, $maxlength = 8)
{
$newpass = '';
// assume ASCII ordering (not valid on EBCDIC systems!)
$valid_chars = "!#%&+-.0123456789=@ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz";
$start = ord($valid_chars);
$end = ord(substr($valid_chars, -1));
better_srand();
if (function_exists('mt_rand')) {
// mersenne twister
$length = mt_rand($minlength, $maxlength);
} else {
// the usually bad glibc rand()
$length = rand($minlength, $maxlength);
}
while ($length > 0) {
if (function_exists('mt_rand')) {
$newchar = mt_rand($start, $end);
} else {
$newchar = rand($start, $end);
}
if (!strrpos($valid_chars, $newchar)) {
continue;
}
// skip holes
$newpass .= sprintf("%c", $newchar);
$length--;
}
return $newpass;
}
function generateId()
{
better_srand();
$s = "";
for ($i = 1; $i <= 16; $i++) {
$r = function_exists('mt_rand') ? mt_rand(55, 90) : rand(55, 90);
$s .= chr($r < 65 ? $r - 17 : $r);
}
return $s;
}
function generateId()
{
better_srand();
$s = "";
for ($i = 1; $i <= 25; $i++) {
$r = function_exists('mt_rand') ? mt_rand(55, 90) : rand(55, 90);
$s .= chr($r < 65 ? $r - 17 : $r);
}
$len = $r = function_exists('mt_rand') ? mt_rand(15, 25) : rand(15, 25);
return substr(base64_encode($s), 3, $len);
}
