function spamhurdle_block_replay_after_post($data)
{
global $PHORUM;
// Register the used key in the database.
if (!spamhurdles_db_init()) {
return $data;
}
spamhurdles_db_put($data['key'], TRUE, $PHORUM['mod_spamhurdles']['key_max_ttl']);
return $data;
}
function phorum_mod_spamhurdles_common()
{
global $PHORUM;
// Initialize the database layer. This will handle automatic installation
// and upgrading of the database structure. Do not continue running the
// Spam Hurldes module in case the initialization fails.
if (!spamhurdles_db_init()) {
return;
}
// Garbage collection for cleaning up expired items from the database.
if (rand(1, 100) <= SPAMHURDLES_GARBAGE_COLLECTION_RATE) {
spamhurdles_db_remove_expired();
}
// See if the old post.php script is called. This one is sometimes
// left behind on systems after upgrading, but it should no longer
// be used for posting. Since this script is not protected against
// spamming, we fully deny access to it here.
if (strstr($_SERVER["PHP_SELF"], "post.php")) {
die("Illegal access to post.php. That script is the message posting " . "script for Phorum 5.0. Phorum 5.1 and higher use posting.php " . "instead. The post.php script might be a left-behind from a " . "Phorum 5.0 upgrade. It should be removed from the server.");
}
$conf = $PHORUM["mod_spamhurdles"];
// See if there's a spamhurdles key available in the request.
$key = NULL;
if (isset($PHORUM["args"]["spokencaptcha"])) {
$key = $PHORUM["args"]["spokencaptcha"];
} elseif (isset($PHORUM["args"]["imagecaptcha"])) {
$key = $PHORUM["args"]["imagecaptcha"];
} elseif (isset($_POST["spamhurdles_key"])) {
$key = $_POST["spamhurdles_key"];
}
// Our main data storage for this module.
$PHORUM["SPAMHURDLES"] = NULL;
// If there was a key, then retrieve the spamhurdles information for
// that key from the database. If there was no key or an expired
// key, keep track of that (used in case we want to post
// messages with an expired key as unapproved).
$PHORUM["SPAMHURDLES_KEY_STATUS"] = KEY_NOTAVAIL;
if ($key !== NULL) {
$spamhurdles = spamhurdles_db_get($key);
if (!empty($spamhurdles)) {
$PHORUM["SPAMHURDLES"] = $spamhurdles;
$PHORUM["SPAMHURDLES_KEY_STATUS"] = KEY_AVAIL;
} else {
// Early bail out option for expired or already used keys,
if (phorum_page == "post" && do_spamhurdle("blockmultipost") && $conf["blockaction"] == "blockerror") {
spamhurdles_blockerror();
}
$PHORUM["SPAMHURDLES_KEY_STATUS"] = KEY_EXPIRED;
}
}
// If a spoken captcha is requested, then generate a wav file for it
// and stream it to the user.
if (isset($PHORUM["args"]["spokencaptcha"])) {
include "./mods/spamhurdles/captcha/spoken_captcha.php";
exit(0);
}
// If a CAPTCHA image is requested, then let the CAPTCHA class that we
// used for generating the CAPTCHA generate the image (this class must
// have a generate_image() method for doing this).
if (isset($PHORUM["args"]["imagecaptcha"])) {
if (isset($PHORUM["SPAMHURDLES"]["captcha"]["question"]) && isset($PHORUM["SPAMHURDLES"]["captcha_class"])) {
$question = $PHORUM["SPAMHURDLES"]["captcha"]["question"];
$class = $PHORUM["SPAMHURDLES"]["captcha_class"];
require_once "./mods/spamhurdles/captcha/class.{$class}.php";
$captcha = new $class();
$captcha->generate_image($question);
exit(0);
} else {
die("<h1>Internal Spam Hurdles module error</h1>" . "Image captcha requested, but not all spamhurdles " . "info is available.");
}
}
// See if we switched to another key. If this is the case, we
// can delete the previously cashed key's data.
if (isset($_COOKIE["mod_spamhurdles_key"])) {
$oldkey = $_COOKIE["mod_spamhurdles_key"];
if (isset($key) && $oldkey !== $key) {
phorum_mod_spamhurdles_cleanup_key($oldkey);
setcookie("mod_spamhurdles_key", "", time() - 86400);
}
}
// We use (a modified version of) iScramble on several occasions.
// Load a little javascript function that we need for it.
$PHORUM['DATA']['HEAD_TAGS'] .= iScramble_javascript();
}