function solvemedia_check_answer($privkey, $remoteip, $challenge, $response, $hashkey = '')
{
if ($privkey == null || $privkey == '') {
die("To use solvemedia you must get an API key from <a href='" . ADCOPY_SIGNUP . "'>" . ADCOPY_SIGNUP . "</a>");
}
if ($remoteip == null || $remoteip == '') {
die("For security reasons, you must pass the remote ip to solvemedia");
}
if ($challenge == null || strlen($challenge) == 0 || $response == null || strlen($response) == 0) {
$adcopy_response = new SolveMediaResponse();
$adcopy_response->is_valid = false;
$adcopy_response->error = 'incorrect-solution';
return $adcopy_response;
}
$response = _adcopy_http_post(ADCOPY_VERIFY_SERVER, "/papi/verify", array('privatekey' => $privkey, 'remoteip' => $remoteip, 'challenge' => $challenge, 'response' => $response));
$answers = explode("\n", $response[1]);
$adcopy_response = new SolveMediaResponse();
if (strlen($hashkey)) {
# validate message authenticator
$hash = sha1($answers[0] . $challenge . $hashkey);
if ($hash != $answers[2]) {
$adcopy_response->is_valid = false;
$adcopy_response->error = 'hash-fail';
return $adcopy_response;
}
}
if (trim($answers[0]) == 'true') {
$adcopy_response->is_valid = true;
} else {
$adcopy_response->is_valid = false;
$adcopy_response->error = $answers[1];
}
return $adcopy_response;
}
/**
* Calls an HTTP POST function to verify if the user's guess was correct
* @param string $privkey
* @param string $remoteip
* @param string $challenge
* @param string $response
* @param string $hashkey
* @return SolveMediaResponse
*/
function solvemedia_check_answer($privkey, $remoteip, $challenge, $response, $hashkey = '')
{
if ($privkey == 'Dm.c-mjmNP7Fhz-hKOpNz8l.NAMGp0wO' || $privkey == '' || $privkey == null) {
// Re-declare the default private key and hash in case of null value
$privkey = 'Dm.c-mjmNP7Fhz-hKOpNz8l.NAMGp0wO';
$hashkey = 'nePptHN4rt.-UVLPFScpSuddqdtFdu2N';
$page_file = basename($_SERVER['PHP_SELF']);
// Get the file generating the page to figure out what key to assign it
if ($page_file == "register.php") {
$privkey = 'RfinGw00jddSv9eqIEo.LDUcZSbSEU6S';
$hashkey = 'SoR.tNYZtGpSkFrMBrLP2kPrpyiYyQpM';
} elseif ($page_file == "story.php") {
$privkey = 'MdwcHqbrYQPcJt0JjXSMrgFwROeLY5Ce';
$hashkey = 'xRJmWazYhZm6zSrrgdZHHctXUTYK6fZa';
} elseif ($page_file == "submit.php") {
$privkey = 'gAilaBopkMs8Bk9R9wx6mhRdl1ljt9Ig';
$hashkey = 'VH9T8Zr8EeUqUiGWfjZpbkS9u.sGf1cp';
}
}
if ($remoteip == null || $remoteip == '') {
die("For security reasons, you must pass the remote ip to solvemedia");
}
//discard spam submissions
if ($challenge == null || strlen($challenge) == 0 || $response == null || strlen($response) == 0) {
$adcopy_response = new SolveMediaResponse();
$adcopy_response->is_valid = false;
$adcopy_response->error = 'incorrect-solution';
return $adcopy_response;
}
$response = _adcopy_http_post(ADCOPY_VERIFY_SERVER, "/papi/verify", array('privatekey' => $privkey, 'remoteip' => $remoteip, 'challenge' => $challenge, 'response' => $response));
$answers = explode("\n", $response[1]);
$adcopy_response = new SolveMediaResponse();
if (strlen($hashkey)) {
# validate message authenticator
$hash = sha1($answers[0] . $challenge . $hashkey);
if ($hash != $answers[2]) {
$adcopy_response->is_valid = false;
$adcopy_response->error = 'hash-fail';
return $adcopy_response;
}
}
if (trim($answers[0]) == 'true') {
$adcopy_response->is_valid = true;
} else {
$adcopy_response->is_valid = false;
$adcopy_response->error = $answers[1];
}
return $adcopy_response;
}