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<?php |
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/** |
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* Votifier PHP Client |
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* |
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* @package VotifierClient |
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* @author Manuele Vaccari <[email protected]> |
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* @copyright Copyright (c) 2017-2020 Manuele Vaccari <[email protected]> |
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* @license https://github.com/D3strukt0r/votifier-client-php/blob/master/LICENSE.txt GNU General Public License v3.0 |
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* @link https://github.com/D3strukt0r/votifier-client-php |
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*/ |
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namespace D3strukt0r\Votifier\Client\Server; |
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use D3strukt0r\Votifier\Client\Exception\NotVotifierException; |
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use D3strukt0r\Votifier\Client\Vote\VoteInterface; |
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use DateTime; |
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use InvalidArgumentException; |
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/** |
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* The Class to access a server which uses the classic "Votifier" plugin. |
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*/ |
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class Votifier extends GenericServer |
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{ |
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/** |
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* {@inheritdoc} |
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*/ |
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public function verifyConnection(): void |
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{ |
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// Check if all variables have been set, to create a connection |
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$this->checkVariablesForSocket(); |
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// Connect to the server |
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$socket = $this->getSocket(); |
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$socket->open($this->getHost(), $this->getPort()); |
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// Check whether the connection really belongs to a Votifier plugin |
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if (!$this->verifyConnectionHeader($socket->read(64))) { |
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throw new NotVotifierException(); |
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} |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function sendVote(VoteInterface ...$votes): void |
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{ |
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// Check if all variables have been set, to create a connection |
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$this->checkVariablesForSocket(); |
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foreach ($votes as $vote) { |
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// Connect to the server |
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$socket = $this->getSocket(); |
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$socket->open($this->getHost(), $this->getPort()); |
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// Check whether the connection really belongs to a Votifier plugin |
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if (!$this->verifyConnectionHeader($socket->read(64))) { |
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throw new NotVotifierException(); |
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} |
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// Update the timestamp of the vote being sent |
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$vote->setTimestamp(new DateTime()); |
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// Check if all variables have been set, to create a package |
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$this->checkVariablesForPackage($vote); |
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// Send the vote |
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$socket->write($this->preparePackage($vote)); |
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// Make sure to close the connection after package was sent |
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$socket->__destruct(); |
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} |
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} |
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/** |
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* Check that both host and port have been set. |
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* |
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* @throws InvalidArgumentException If one required parameter wasn't set |
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*/ |
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protected function checkVariablesForSocket(): void |
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{ |
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if (!isset($this->host, $this->port)) { |
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// $countError = 0; |
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$errorMessage = ''; |
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if (null === $this->host) { |
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$errorMessage .= 'The host variable wasn\'t set with "->setHost(...)".'; |
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// ++$countError; |
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} |
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// Not needed, as port has a default value |
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// if (null === $this->port) { |
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// $errorMessage .= $countError > 0 ? ' ' : ''; |
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// $errorMessage .= 'The port variable wasn\'t set with "->setPort(...)".'; |
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// } |
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throw new InvalidArgumentException($errorMessage); |
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} |
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} |
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/** |
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* Check that service name, username, address, timestamp and public key have been set. |
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* |
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* @param VoteInterface $vote The vote to check |
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* |
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* @throws InvalidArgumentException If one required parameter wasn't set |
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*/ |
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protected function checkVariablesForPackage(VoteInterface $vote) |
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{ |
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if ( |
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null === $vote->getServiceName() |
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|| null === $vote->getUsername() |
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|| null === $vote->getAddress() |
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|| null === $vote->getTimestamp() |
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|| !isset($this->publicKey) |
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) { |
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$countError = 0; |
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$errorMessage = ''; |
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if (null === $vote->getServiceName()) { |
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$errorMessage .= 'The host variable wasn\'t set with "->setServiceName(...)".'; |
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++$countError; |
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} |
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if (null === $vote->getUsername()) { |
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$errorMessage .= $countError > 0 ? ' ' : ''; |
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$errorMessage .= 'The host variable wasn\'t set with "->setUsername(...)".'; |
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++$countError; |
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} |
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if (null === $vote->getAddress()) { |
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$errorMessage .= $countError > 0 ? ' ' : ''; |
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$errorMessage .= 'The host variable wasn\'t set with "->setAddress(...)".'; |
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++$countError; |
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} |
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if (null === $vote->getTimestamp()) { |
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$errorMessage .= $countError > 0 ? ' ' : ''; |
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$errorMessage .= 'The host variable wasn\'t set with "->setTimestamp(...)".'; |
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} |
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if (!isset($this->publicKey)) { |
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$errorMessage .= $countError > 0 ? ' ' : ''; |
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$errorMessage .= 'The public key variable wasn\'t set with "->setPublicKey(...)".'; |
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} |
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throw new InvalidArgumentException($errorMessage); |
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} |
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} |
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/** |
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* Verifies that the connection is correct. Read more: |
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* https://github.com/vexsoftware/votifier/wiki/Protocol-Documentation. |
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* |
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* @param string|null $header The header that the plugin usually sends |
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* |
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* @return bool returns true if connections is available, otherwise false |
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*/ |
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protected function verifyConnectionHeader(?string $header): bool |
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{ |
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if ( |
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null === $header |
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|| false === mb_strpos($header, 'VOTIFIER') |
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) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* Create encrypted package for default Votifier. Read more: |
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* https://github.com/vexsoftware/votifier/wiki/Protocol-Documentation. |
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* |
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* @param VoteInterface $vote The vote package with all the information |
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* |
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* @return string returns the string to be sent to the server |
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*/ |
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protected function preparePackage(VoteInterface $vote): string |
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{ |
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// Details of the vote |
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$votePackage = 'VOTE' . "\n" . |
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$vote->getServiceName() . "\n" . |
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$vote->getUsername() . "\n" . |
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$vote->getAddress() . "\n" . |
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$vote->getTimestamp() . "\n"; |
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// Encrypt the string |
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openssl_public_encrypt($votePackage, $encryptedVotePackage, $this->getPublicKey(), OPENSSL_SSLV23_PADDING); |
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return $encryptedVotePackage; |
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} |
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} |
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D3strukt0r /
votifier-client-php
