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<?php |
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declare(strict_types=1); |
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namespace UMA\JsonRpc\Internal; |
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class Input |
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{ |
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/** |
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* This is the minimal schema that all incoming payloads must |
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* conform to in order to be considered actual JSON-RPC requests. |
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*/ |
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private const INPUT_SCHEMA = <<<'JSON' |
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{ |
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"$schema": "https://json-schema.org/draft-07/schema#", |
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"description": "JSON-RPC 2.0 single request schema", |
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"type": "object", |
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"required": ["jsonrpc", "method"], |
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"additionalProperties": false, |
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"properties": { |
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"jsonrpc": { |
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"type": "string", |
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"enum": ["2.0"] |
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}, |
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"method": { |
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"type": "string" |
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}, |
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"params": { |
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"type": ["array", "object"] |
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}, |
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"id": { |
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"type": ["integer", "string"] |
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} |
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} |
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} |
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JSON; |
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/** |
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* @var \stdClass |
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*/ |
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private static $schema; |
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/** |
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* @var mixed |
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*/ |
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private $data; |
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/** |
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* @var int |
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*/ |
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private $error; |
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private function __construct($data, int $error) |
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{ |
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$this->data = $data; |
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$this->error = $error; |
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} |
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public static function fromString(string $raw): Input |
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{ |
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return new self(\json_decode($raw), \json_last_error()); |
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} |
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public static function fromSafeData($data): Input |
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{ |
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\assert(false !== \json_encode($data)); |
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return new self($data, JSON_ERROR_NONE); |
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} |
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public function data() |
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{ |
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return $this->data; |
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} |
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public function parsable(): bool |
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{ |
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return JSON_ERROR_NONE === $this->error; |
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} |
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public function isArray(): bool |
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{ |
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return \is_array($this->data) && !empty($this->data); |
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} |
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public function isRpcRequest(): bool |
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{ |
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if (!self::$schema instanceof \stdClass) { |
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self::$schema = \json_decode(self::INPUT_SCHEMA); |
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} |
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return Validator::validate(self::$schema, $this->data); |
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} |
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} |
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