includes/registration/ExtensionJsonValidator.php

   1 <?php
   2
   3 /**
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  17  * http://www.gnu.org/copyleft/gpl.html
  18  *
  19  * @file
  20  */
  21
  22 use Composer\Spdx\SpdxLicenses;
  23 use JsonSchema\Validator;
  24
  25 /**
  26  * @since 1.29
  27  */
  28 class ExtensionJsonValidator {
  29
  30         /**
  31          * @var callable
  32          */
  33         private $missingDepCallback;
  34
  35         /**
  36          * @param callable $missingDepCallback
  37          */
  38         public function __construct( callable $missingDepCallback ) {
  39                 $this->missingDepCallback = $missingDepCallback;
  40         }
  41
  42         /**
  43          * @return bool
  44          */
  45         public function checkDependencies() {
  46                 if ( !class_exists( Validator::class ) ) {
  47                         call_user_func( $this->missingDepCallback,
  48                                 'The JsonSchema library cannot be found, please install it through composer.'
  49                         );
  50                         return false;
  51                 } elseif ( !class_exists( SpdxLicenses::class ) ) {
  52                         call_user_func( $this->missingDepCallback,
  53                                 'The spdx-licenses library cannot be found, please install it through composer.'
  54                         );
  55                         return false;
  56                 }
  57
  58                 return true;
  59         }
  60
  61         /**
  62          * @param string $path file to validate
  63          * @return bool true if passes validation
  64          * @throws ExtensionJsonValidationError on any failure
  65          */
  66         public function validate( $path ) {
  67                 $data = json_decode( file_get_contents( $path ) );
  68                 if ( !is_object( $data ) ) {
  69                         throw new ExtensionJsonValidationError( "$path is not valid JSON" );
  70                 }
  71
  72                 if ( !isset( $data->manifest_version ) ) {
  73                         throw new ExtensionJsonValidationError(
  74                                 "$path does not have manifest_version set." );
  75                 }
  76
  77                 $version = $data->manifest_version;
  78                 $schemaPath = __DIR__ . "/../../docs/extension.schema.v$version.json";
  79
  80                 // Not too old
  81                 if ( $version < ExtensionRegistry::OLDEST_MANIFEST_VERSION ) {
  82                         throw new ExtensionJsonValidationError(
  83                                 "$path is using a non-supported schema version"
  84                         );
  85                 } elseif ( $version > ExtensionRegistry::MANIFEST_VERSION ) {
  86                         throw new ExtensionJsonValidationError(
  87                                 "$path is using a non-supported schema version"
  88                         );
  89                 }
  90
  91                 $licenseError = false;
  92                 // Check if it's a string, if not, schema validation will display an error
  93                 if ( isset( $data->{'license-name'} ) && is_string( $data->{'license-name'} ) ) {
  94                         $licenses = new SpdxLicenses();
  95                         $valid = $licenses->validate( $data->{'license-name'} );
  96                         if ( !$valid ) {
  97                                 $licenseError = '[license-name] Invalid SPDX license identifier, '
  98                                         . 'see <https://spdx.org/licenses/>';
  99                         }
 100                 }
 101
 102                 $validator = new Validator;
 103                 $validator->check( $data, (object)[ '$ref' => 'file://' . $schemaPath ] );
 104                 if ( $validator->isValid() && !$licenseError ) {
 105                         // All good.
 106                         return true;
 107                 } else {
 108                         $out = "$path did pass validation.\n";
 109                         foreach ( $validator->getErrors() as $error ) {
 110                                 $out .= "[{$error['property']}] {$error['message']}\n";
 111                         }
 112                         if ( $licenseError ) {
 113                                 $out .= "$licenseError\n";
 114                         }
 115                         throw new ExtensionJsonValidationError( $out );
 116                 }
 117         }
 118 }