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2 daniel-mar 1 
<?php
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/*
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 * OIDplus 2.0
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 * Copyright 2019 Daniel Marschall, ViaThinkSoft
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 *
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 * Licensed under the Apache License, Version 2.0 (the "License");
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 * you may not use this file except in compliance with the License.
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 * You may obtain a copy of the License at
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 *
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 *     http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing, software
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 */
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function insertWhitespace($str, $index) {
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        return substr($str, 0, $index) . ' ' . substr($str, $index);
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}
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function js_escape($data) {
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        // TODO.... json_encode??
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        $data = str_replace('\\', '\\\\', $data);
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        $data = str_replace('\'', '\\\'', $data);
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        return "'" . $data . "'";
2 daniel-mar 29 
}
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11 daniel-mar 31 
function trim_br($html) {
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        do { $html = preg_replace('@^\s*<\s*br\s*/{0,1}\s*>@isU', '', $html, -1, $count); } while ($count > 0); // left trim
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        do { $html = preg_replace('@<\s*br\s*/{0,1}\s*>\s*$@isU', '', $html, -1, $count); } while ($count > 0); // right trim
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        return $html;
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}
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function verify_private_public_key($privKey, $pubKey) {
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        try {
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                if (empty($privKey)) return false;
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                if (empty($pubKey)) return false;
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                $data = 'TEST';
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                if (!@openssl_public_encrypt($data, $encrypted, $pubKey)) return false;
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                if (!@openssl_private_decrypt($encrypted, $decrypted, $privKey)) return false;
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                return $decrypted == $data;
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        } catch (Exception $e) {
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                return false;
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        }
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}
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function smallhash($data) { // get 31 bits from SHA1. Values 0..2147483647
250 daniel-mar 51 
        return (hexdec(substr(sha1($data),-4*2)) & 0x7FFFFFFF);
74 daniel-mar 52 
}
180 daniel-mar 53 
 
182 daniel-mar 54 
function split_firstname_lastname($name) {
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        $ary = explode(' ', $name);
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        $last_name = array_pop($ary);
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        $first_name = implode(' ', $ary);
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        return array($first_name, $last_name);
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}
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function originHeaders() {
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        // CORS
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        // Author: Till Wehowski
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        header("Access-Control-Allow-Credentials: true");
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        header("Access-Control-Allow-Origin: ".strip_tags(((isset($_SERVER['HTTP_ORIGIN'])) ? $_SERVER['HTTP_ORIGIN'] : "*")));
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        header("Access-Control-Allow-Headers: If-None-Match, X-Requested-With, Origin, X-Frdlweb-Bugs, Etag, X-Forgery-Protection-Token, X-CSRF-Token");
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        if (isset($_SERVER['HTTP_ORIGIN'])) {
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                header('X-Frame-Options: ALLOW-FROM '.$_SERVER['HTTP_ORIGIN']);
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        } else {
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                header_remove("X-Frame-Options");
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        }
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        $expose = array('Etag', 'X-CSRF-Token');
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        foreach (headers_list() as $num => $header) {
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                $h = explode(':', $header);
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                $expose[] = trim($h[0]);
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        }
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        header("Access-Control-Expose-Headers: ".implode(',',$expose));
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        header("Vary: Origin");
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}
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function get_calling_function() {
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        $ex = new Exception();
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        $trace = $ex->getTrace();
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        if (!isset($trace[2])) return '(main)';
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        $final_call = $trace[2];
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        return $final_call['file'].':'.$final_call['line'].'/'.$final_call['function'].'()';
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}