84 lines
2.7 KiB
PHP
84 lines
2.7 KiB
PHP
<?php
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namespace sammo;
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class WebUtil
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{
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private function __construct()
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{
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}
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public static function escapeIPv4($ip)
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{
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return str_replace('.', '\\.', $ip);
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}
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public static function setHeaderNoCache()
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{
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if (!headers_sent()) {
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header('Expires: Wed, 01 Jan 2014 00:00:00 GMT');
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header('Cache-Control: no-store, no-cache, must-revalidate');
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header('Cache-Control: post-check=0, pre-check=0', false);
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header('Pragma: no-cache');
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}
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}
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public static function parseJsonPost()
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{
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// http://thisinterestsme.com/receiving-json-post-data-via-php/
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// http://thisinterestsme.com/php-json-error-handling/
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if (strcasecmp($_SERVER['REQUEST_METHOD'], 'POST') != 0) {
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throw new \Exception('Request method must be POST!');
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}
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//Make sure that the content type of the POST request has been set to application/json
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$contentType = isset($_SERVER["CONTENT_TYPE"]) ? trim($_SERVER["CONTENT_TYPE"]) : '';
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if (strcasecmp($contentType, 'application/json') != 0) {
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throw new \Exception('Content type must be: application/json');
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}
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//Receive the RAW post data.
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$content = trim(file_get_contents("php://input"));
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//Attempt to decode the incoming RAW post data from JSON.
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$decoded = Json::decode($content);
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$jsonError = json_last_error();
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//In some cases, this will happen.
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if (is_null($decoded) && $jsonError == JSON_ERROR_NONE) {
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throw new \Exception('Could not decode JSON!');
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}
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//If an error exists.
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if ($jsonError != JSON_ERROR_NONE) {
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$error = 'Could not decode JSON! ';
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//Use a switch statement to figure out the exact error.
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switch ($jsonError) {
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case JSON_ERROR_DEPTH:
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$error .= 'Maximum depth exceeded!';
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break;
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case JSON_ERROR_STATE_MISMATCH:
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$error .= 'Underflow or the modes mismatch!';
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break;
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case JSON_ERROR_CTRL_CHAR:
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$error .= 'Unexpected control character found';
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break;
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case JSON_ERROR_SYNTAX:
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$error .= 'Malformed JSON';
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break;
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case JSON_ERROR_UTF8:
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$error .= 'Malformed UTF-8 characters found!';
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break;
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default:
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$error .= 'Unknown error!';
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break;
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}
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throw new \Exception($error);
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}
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return $decoded;
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}
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}
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