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<?php// This file is part of Moodle - http://moodle.org///// Moodle 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 3 of the License, or// (at your option) any later version.//// Moodle 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 Moodle. If not, see <http://www.gnu.org/licenses/>.//// This file is part of BasicLTI4Moodle//// BasicLTI4Moodle is an IMS BasicLTI (Basic Learning Tools for Interoperability)// consumer for Moodle 1.9 and Moodle 2.0. BasicLTI is a IMS Standard that allows web// based learning tools to be easily integrated in LMS as native ones. The IMS BasicLTI// specification is part of the IMS standard Common Cartridge 1.1 Sakai and other main LMS// are already supporting or going to support BasicLTI. This project Implements the consumer// for Moodle. Moodle is a Free Open source Learning Management System by Martin Dougiamas.// BasicLTI4Moodle is a project iniciated and leaded by Ludo(Marc Alier) and Jordi Piguillem// at the GESSI research group at UPC.// SimpleLTI consumer for Moodle is an implementation of the early specification of LTI// by Charles Severance (Dr Chuck) htp://dr-chuck.com , developed by Jordi Piguillem in a// Google Summer of Code 2008 project co-mentored by Charles Severance and Marc Alier.//// BasicLTI4Moodle is copyright 2009 by Marc Alier Forment, Jordi Piguillem and Nikolas Galanis// of the Universitat Politecnica de Catalunya http://www.upc.edu// Contact info: Marc Alier Forment granludo @ gmail.com or marc.alier @ upc.edu.namespace mod_lti\local\ltiopenid;/*** Tests for the jwks_helper class.** @coversDefaultClass \mod_lti\local\ltiopenid\jwks_helper* @package mod_lti* @copyright 2023 Jake Dallimore <jrhdallimore@gmail.com>* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later*/class jwks_helper_test extends \basic_testcase {/*** Test the fix_jwks_alg method with a range of inputs.** @dataProvider jwks_alg_provider* @covers ::fix_jwks_alg* @param array $jwks the JWKS key set.* @param string $jwt the JWT.* @param array $expected the expected outputs/exceptions.* @return void*/public function test_fix_jwks_alg(array $jwks, string $jwt, array $expected): void {if (isset($expected['exception'])) {$this->expectException($expected['exception']);}$fixed = jwks_helper::fix_jwks_alg($jwks, $jwt);$this->assertEquals($expected['jwks'], $fixed);}/*** Provider for test_fix_jwks_alg.* @return array test data.*/public function jwks_alg_provider(): array {return [// Algs already present, so no changes to input key array.'All JWKS keys have algs set' => ['jwks' => ['keys' => [['kty' => 'RSA','use' => 'sig','e' => 'AQAB','n' => '3nVf6','kid' => '41','alg' => 'RS256'],['kty' => 'RSA','use' => 'sig','e' => 'AQAB','n' => '3nVf6','kid' => '42','alg' => 'RS256']]],// RS256 JWT with kid = 42.'jwt' => 'eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCIsImtpZCI6IjQyIn0.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IlRoZSBjYXQiLCJz'.'bG9nYW4iOiJMb3ZlcyBpdCwgbG92ZXMgaXQsIGxvdmVzIE1vb2RsZSIsImlhdCI6MTUxNjIzOTAyMn0.EiqMEqufKJj74JevdTxXqzHvHGIcZ'.'EFYhOe9sliL2FmlyiJcf7waObO2ZNwWvVZwTI4DfEGFamheMmTb6-YBODacDvH6BlQNb0H_6ye6AGl1u-3OAQj7i_SKsLuB37k6Lw5YFrwQYr'.'7bjujSaQx6BL3kaqkqCdZhFjr2EYcn5-NehGHsevKqpMA-ShBovcndYkD5gfZEbXr59sgpQuJ43qO7gnGPzRbaJAEw_0_6v0r3y0pzDNfarNd'.'fHfCZQbcF9T8dpHAeO4JMmuCanV8iJziI8ihVPwH-BwUJmzthyUgy8542FinHVbXo-88wu9xpbdV17VPgeGGBCpYpnVnWaA','expected' => ['jwks' => ['keys' => [['kty' => 'RSA','use' => 'sig','e' => 'AQAB','n' => '3nVf6','kid' => '41','alg' => 'RS256'],['kty' => 'RSA','use' => 'sig','e' => 'AQAB','n' => '3nVf6','kid' => '42','alg' => 'RS256']]]]],// Only the key matching the kid in the JWT header should be fixed.'All JWKS keys missing alg' => ['jwks' => ['keys' => [['kty' => 'RSA','use' => 'sig','e' => 'AQAB','n' => '3nVf6','kid' => '41',],['kty' => 'RSA','use' => 'sig','e' => 'AQAB','n' => '3nVf6','kid' => '42',]]],// RS256 JWT with kid = 42.'jwt' => 'eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCIsImtpZCI6IjQyIn0.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IlRoZSBjYXQiLCJz'.'bG9nYW4iOiJMb3ZlcyBpdCwgbG92ZXMgaXQsIGxvdmVzIE1vb2RsZSIsImlhdCI6MTUxNjIzOTAyMn0.EiqMEqufKJj74JevdTxXqzHvHGIcZ'.'EFYhOe9sliL2FmlyiJcf7waObO2ZNwWvVZwTI4DfEGFamheMmTb6-YBODacDvH6BlQNb0H_6ye6AGl1u-3OAQj7i_SKsLuB37k6Lw5YFrwQYr'.'7bjujSaQx6BL3kaqkqCdZhFjr2EYcn5-NehGHsevKqpMA-ShBovcndYkD5gfZEbXr59sgpQuJ43qO7gnGPzRbaJAEw_0_6v0r3y0pzDNfarNd'.'fHfCZQbcF9T8dpHAeO4JMmuCanV8iJziI8ihVPwH-BwUJmzthyUgy8542FinHVbXo-88wu9xpbdV17VPgeGGBCpYpnVnWaA','expected' => ['jwks' => ['keys' => [['kty' => 'RSA','use' => 'sig','e' => 'AQAB','n' => '3nVf6','kid' => '41',],['kty' => 'RSA','use' => 'sig','e' => 'AQAB','n' => '3nVf6','kid' => '42','alg' => 'RS256']]]]],// Exception expected when JWT alg is supported but does not match the family of key in the JWK.'JWT kty algorithm family mismatch' => ['jwks' => ['keys' => [['kty' => 'RSA','use' => 'sig','e' => 'AQAB','n' => '3nVf6','kid' => '41',],['kty' => 'RSA','use' => 'sig','e' => 'AQAB','n' => '3nVf6','kid' => '42',]]],// ES256 JWT with kid = 42.'jwt' => 'eyJhbGciOiJFUzI1NiIsInR5cCI6IkpXVCIsImtpZCI6IjQyIn0.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwi'.'YWRtaW4iOnRydWUsImlhdCI6MTUxNjIzOTAyMn0.dbUlZopFo7164JVLD0G4GoZOhoMYWhIXkgtlblBXT6fC3K4lJ38l3LzlEBhfRRKvJlXpe'.'NNGmBg8V29jd5J33Q','expected' => ['exception' => \moodle_exception::class]],// Exception expected when JWK kid field missing.'JWT missing kid header field' => ['jwks' => ['keys' => [['kty' => 'RSA','use' => 'sig','e' => 'AQAB','n' => '3nVf6','kid' => '41','alg' => 'RS256'],['kty' => 'RSA','use' => 'sig','e' => 'AQAB','n' => '3nVf6','kid' => '42','alg' => 'RS256']]],// RS256 JWT with kid omitted.'jwt' => 'eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiYWRtaW4iOnRydWU'.'sImlhdCI6MTUxNjIzOTAyMn0.NHVaYe26MbtOYhSKkoKYdFVomg4i8ZJd8_-RU8VNbftc4TSMb4bXP3l3YlNWACwyXPGffz5aXHc6lty1Y2t4'.'SWRqGteragsVdZufDn5BlnJl9pdR_kdVFUsra2rWKEofkZeIC4yWytE58sMIihvo9H1ScmmVwBcQP6XETqYd0aSHp1gOa9RdUPDvoXQ5oqygT'.'qVtxaDr6wUFKrKItgBMzWIdNZ6y7O9E0DhEPTbE9rfBo6KTFsHAZnMg4k68CDp2woYIaXbmYTWcvbzIuHO7_37GT79XdIwkm95QJ7hYC9Riwr'.'V7mesbY4PAahERJawntho0my942XheVLmGwLMBkQ','expected' => ['exception' => \moodle_exception::class]],// Exception expected when JWT passes unsupported symmetrical alg.'JWT passes in unsupported alg' => ['jwks' => ['keys' => [['kty' => 'RSA','use' => 'sig','e' => 'AQAB','n' => '3nVf6','kid' => '41',],['kty' => 'RSA','use' => 'sig','e' => 'AQAB','n' => '3nVf6','kid' => '42',]]],// HS256 JWT with kid = 42.'jwt' => 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCIsImtpZCI6IjQyIn0.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IlRoZSBjYXQiLCJz'.'bG9nYW4iOiJMb3ZlcyBpdCwgbG92ZXMgaXQsIGxvdmVzIE1vb2RsZSIsImlhdCI6MTUxNjIzOTAyMn0.zBM5Jw0BOig5-C1R7TD-TzH1QVmyD'.'yMjbK0KGG76xIE','expected' => ['exception' => \moodle_exception::class]],];}}