--- /dev/null
+<?php
+
+/**
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ */
+
+use Composer\Spdx\SpdxLicenses;
+use JsonSchema\Validator;
+use Seld\JsonLint\JsonParser;
+use Seld\JsonLint\ParsingException;
+
+/**
+ * @since 1.29
+ */
+class ExtensionJsonValidator {
+
+ /**
+ * @var callable
+ */
+ private $missingDepCallback;
+
+ /**
+ * @param callable $missingDepCallback
+ */
+ public function __construct( callable $missingDepCallback ) {
+ $this->missingDepCallback = $missingDepCallback;
+ }
+
+ /**
+ * @return bool
+ */
+ public function checkDependencies() {
+ if ( !class_exists( Validator::class ) ) {
+ call_user_func( $this->missingDepCallback,
+ 'The JsonSchema library cannot be found, please install it through composer.'
+ );
+ return false;
+ } elseif ( !class_exists( SpdxLicenses::class ) ) {
+ call_user_func( $this->missingDepCallback,
+ 'The spdx-licenses library cannot be found, please install it through composer.'
+ );
+ return false;
+ } elseif ( !class_exists( JsonParser::class ) ) {
+ call_user_func( $this->missingDepCallback,
+ 'The JSON lint library cannot be found, please install it through composer.'
+ );
+ }
+
+ return true;
+ }
+
+ /**
+ * @param string $path file to validate
+ * @return bool true if passes validation
+ * @throws ExtensionJsonValidationError on any failure
+ */
+ public function validate( $path ) {
+ $contents = file_get_contents( $path );
+ $jsonParser = new JsonParser();
+ try {
+ $data = $jsonParser->parse( $contents, JsonParser::DETECT_KEY_CONFLICTS );
+ } catch ( ParsingException $e ) {
+ if ( $e instanceof \Seld\JsonLint\DuplicateKeyException ) {
+ throw new ExtensionJsonValidationError( $e->getMessage() );
+ }
+ throw new ExtensionJsonValidationError( "$path is not valid JSON" );
+ }
+
+ if ( !isset( $data->manifest_version ) ) {
+ throw new ExtensionJsonValidationError(
+ "$path does not have manifest_version set." );
+ }
+
+ $version = $data->manifest_version;
+ $schemaPath = __DIR__ . "/../../docs/extension.schema.v$version.json";
+
+ // Not too old
+ if ( $version < ExtensionRegistry::OLDEST_MANIFEST_VERSION ) {
+ throw new ExtensionJsonValidationError(
+ "$path is using a non-supported schema version"
+ );
+ } elseif ( $version > ExtensionRegistry::MANIFEST_VERSION ) {
+ throw new ExtensionJsonValidationError(
+ "$path is using a non-supported schema version"
+ );
+ }
+
+ $licenseError = false;
+ // Check if it's a string, if not, schema validation will display an error
+ if ( isset( $data->{'license-name'} ) && is_string( $data->{'license-name'} ) ) {
+ $licenses = new SpdxLicenses();
+ $valid = $licenses->validate( $data->{'license-name'} );
+ if ( !$valid ) {
+ $licenseError = '[license-name] Invalid SPDX license identifier, '
+ . 'see <https://spdx.org/licenses/>';
+ }
+ }
+
+ $validator = new Validator;
+ $validator->check( $data, (object)[ '$ref' => 'file://' . $schemaPath ] );
+ if ( $validator->isValid() && !$licenseError ) {
+ // All good.
+ return true;
+ } else {
+ $out = "$path did not pass validation.\n";
+ foreach ( $validator->getErrors() as $error ) {
+ $out .= "[{$error['property']}] {$error['message']}\n";
+ }
+ if ( $licenseError ) {
+ $out .= "$licenseError\n";
+ }
+ throw new ExtensionJsonValidationError( $out );
+ }
+ }
+}