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137 lines
3.6 KiB
PHP
137 lines
3.6 KiB
PHP
<?php
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namespace BusinessLogic\Tickets;
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use BusinessLogic\Tickets\Exceptions\UnableToGenerateTrackingIdException;
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use DataAccess\Tickets\TicketGateway;
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class TrackingIdGenerator {
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/**
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* @var $ticketGateway TicketGateway
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*/
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private $ticketGateway;
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function __construct(TicketGateway $ticketGateway) {
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$this->ticketGateway = $ticketGateway;
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}
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/**
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* @param $heskSettings array
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* @return string
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* @throws UnableToGenerateTrackingIdException
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*/
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function generateTrackingId($heskSettings) {
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$acceptableCharacters = 'AEUYBDGHJLMNPQRSTVWXZ123456789';
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/* Generate raw ID */
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$trackingId = '';
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/* Let's avoid duplicate ticket ID's, try up to 3 times */
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for ($i = 1; $i <= 3; $i++) {
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for ($i = 0; $i < 10; $i++) {
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$trackingId .= $acceptableCharacters[mt_rand(0, 29)];
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}
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$trackingId = $this->formatTrackingId($trackingId);
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/* Check for duplicate IDs */
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$goodId = !$this->ticketGateway->doesTicketExist($trackingId, $heskSettings);
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if ($goodId) {
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return $trackingId;
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}
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/* A duplicate ID has been found! Let's try again (up to 2 more) */
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$trackingId = '';
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}
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/* No valid tracking ID, try one more time with microtime() */
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$trackingId = $acceptableCharacters[mt_rand(0, 29)];
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$trackingId .= $acceptableCharacters[mt_rand(0, 29)];
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$trackingId .= $acceptableCharacters[mt_rand(0, 29)];
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$trackingId .= $acceptableCharacters[mt_rand(0, 29)];
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$trackingId .= $acceptableCharacters[mt_rand(0, 29)];
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$trackingId .= substr(microtime(), -5);
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/* Format the ID to the correct shape and check wording */
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$trackingId = $this->formatTrackingId($trackingId);
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$goodId = !$this->ticketGateway->doesTicketExist($trackingId, $heskSettings);
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if ($goodId) {
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return $trackingId;
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}
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throw new UnableToGenerateTrackingIdException();
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}
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/**
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* @param $id string
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* @return string
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*/
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private function formatTrackingId($id) {
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$acceptableCharacters = 'AEUYBDGHJLMNPQRSTVWXZ123456789';
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$replace = $acceptableCharacters[mt_rand(0, 29)];
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$replace .= mt_rand(1, 9);
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$replace .= $acceptableCharacters[mt_rand(0, 29)];
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/*
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Remove 3 letter bad words from ID
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Possiblitiy: 1:27,000
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*/
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$remove = array(
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'ASS',
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'CUM',
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'FAG',
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'FUK',
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'GAY',
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'SEX',
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'TIT',
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'XXX',
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);
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$id = str_replace($remove, $replace, $id);
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/*
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Remove 4 letter bad words from ID
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Possiblitiy: 1:810,000
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*/
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$remove = array(
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'ANAL',
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'ANUS',
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'BUTT',
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'CAWK',
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'CLIT',
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'COCK',
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'CRAP',
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'CUNT',
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'DICK',
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'DYKE',
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'FART',
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'FUCK',
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'JAPS',
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'JERK',
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'JIZZ',
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'KNOB',
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'PISS',
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'POOP',
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'SHIT',
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'SLUT',
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'SUCK',
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'TURD',
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// Also, remove words that are known to trigger mod_security
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'WGET',
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);
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$replace .= mt_rand(1, 9);
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$id = str_replace($remove, $replace, $id);
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/* Format the ID string into XXX-XXX-XXXX format for easier readability */
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$id = $id[0] . $id[1] . $id[2] . '-' . $id[3] . $id[4] . $id[5] . '-' . $id[6] . $id[7] . $id[8] . $id[9];
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return $id;
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}
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} |