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<?php |
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namespace Slides\Connector\Auth\Sync; |
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use Illuminate\Encryption\Encrypter; |
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use Illuminate\Support\Arr; |
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/** |
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* Trait ImportsUsers |
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* |
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* @package Slides\Connector\Auth\Sync |
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*/ |
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trait ImportsUsers |
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{ |
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/** |
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* The import dump headers. |
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* |
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* @var array |
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*/ |
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protected $importHeaders; |
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/** |
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* Export local users to a file in the compressed GZIP format. |
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* |
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* @param string $path |
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* @param string $sharedKey |
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* @param bool $importModes Whether import modes from the dump. |
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* |
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* @return void |
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*/ |
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public function import(string $path, string $sharedKey, bool $importModes = true) |
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{ |
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$difference = $this->parseDump($path, $sharedKey, $importModes); |
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$foreigners = array_map(function (array $user) { |
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return $this->createRemoteUserFromResponse($user); |
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}, $difference); |
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$this->foreigners = collect($foreigners); |
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} |
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/** |
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* Parse a dump and retrieve user entities in array representation. |
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* |
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* Steps: |
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* 1. Read a file contents |
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* 2. Decrypt using shared token and tenant credentials |
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* 3. Decompress and decode from JSON to array |
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* |
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* @param string $filename |
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* @param string $sharedKey |
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* @param bool $importModes Whether import modes from the dump. |
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* |
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* @return array |
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*/ |
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private function parseDump(string $filename, string $sharedKey, bool $importModes): array |
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{ |
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if(!file_exists($filename)) { |
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throw new \InvalidArgumentException($filename . ' cannot be found'); |
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} |
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// Retrieve dump contents, it's encrypted and gzipped |
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// We should handle it firstly |
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$payload = file_get_contents($filename); |
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// Extract and parse headers which contain necessary information |
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// Then delete from a dump so we can proceed with decryption |
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$this->extractHeaders($payload); |
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if($importModes) { |
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$this->modes = Arr::get($this->importHeaders, 'modes', []); |
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} |
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$encrypter = new Encrypter( |
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$this->createDecryptionKey($sharedKey), |
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$this->cipher |
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); |
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// Decrypt a payload. If successful, we retrieve compressed user entities |
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$data = $encrypter->decrypt($payload); |
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// Decompress users |
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$data = gzdecode($data); |
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return json_decode($data, true); |
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} |
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/** |
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* Create a decryption key based on shared key and signature which authorizes tenant. |
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* |
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* @param string $sharedKey |
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* |
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* @return string |
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*/ |
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private function createDecryptionKey(string $sharedKey): string |
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{ |
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return base64_decode($sharedKey) . ':' . $this->signature(); |
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} |
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/** |
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* Create a signature based on credentials. |
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* |
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* @return string |
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*/ |
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private function signature(): string |
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{ |
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$sign = hash('sha256', $this->credential('public') . $this->credential('secret')); |
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return substr($sign, 0, 15); |
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} |
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/** |
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* Extract and parse headers from the dump. |
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* |
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* @param string $payload |
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* |
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* @return array |
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*/ |
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private function extractHeaders(string &$payload): array |
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{ |
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$headers = unserialize( |
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base64_decode(strtok($payload, '/')) |
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); |
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// Remove header string from the payload |
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$payload = ltrim(strstr($payload, '/'), '/'); |
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return $this->importHeaders = $headers; |
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} |
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} |
24Slides /
auth-connector
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