feat(PassthroughParameters): Make it possible to pass through parameters to the SAML library

lib/Controller/SAMLController.php

@@ -150,10 +150,22 @@ public function login(int $idp = 1): Http\RedirectResponse {
 		$type = $this->config->getAppValue($this->appName, 'type');
 		switch ($type) {
 			case 'saml':
-				$auth = new Auth($this->samlSettings->getOneLoginSettingsArray($idp));
+				$settings = $this->samlSettings->getOneLoginSettingsArray($idp);
+				$auth = new Auth($settings);
+				$passthroughParamsString = trim($settings['idp-passthroughParameters'] ?? '') ;
+				$passthroughParams = array_map('trim', explode(',', $passthroughParamsString));
+
+				$passthroughValues = [];
+				foreach ($passthroughParams as $passthroughParam) {
+					$value = (string)$this->request->getParam($passthroughParam, '');
+					if ($value !== '') {
+						$passthroughValues[$passthroughParam] = $value;
+					}
+				}
+
 
 				$returnUrl = $originalUrl ?: $this->urlGenerator->linkToRouteAbsolute('user_saml.SAML.login');
-				$ssoUrl = $auth->login($returnUrl, [], false, false, true);
+				$ssoUrl = $auth->login($returnUrl, $passthroughValues, false, false, true);
 				$response = new Http\RedirectResponse($ssoUrl);
 
 				// Small hack to make user_saml work with the loginflows

lib/Controller/SettingsController.php

@@ -57,6 +57,7 @@ public function getSamlProviderSettings(int $providerId): array {
 			'singleSignOnService.url' => ['required' => false],
 			'entityId' => ['required' => false],
 			'x509cert' => ['required' => false],
+			'idp-passthroughParameters' => ['required' => false],
 		];
 		/* Fetch all config values for the given providerId */
 

lib/SAMLSettings.php

@@ -30,6 +30,7 @@ class SAMLSettings {
 		'idp-singleLogoutService.responseUrl',
 		'idp-singleLogoutService.url',
 		'idp-singleSignOnService.url',
+		'idp-passthroughParameters',
 		'idp-x509cert',
 		'security-authnRequestsSigned',
 		'security-general',
@@ -133,6 +134,7 @@ public function getOneLoginSettingsArray(int $idp): array {
 			'strict' => true,
 			'debug' => $this->config->getSystemValue('debug', false),
 			'baseurl' => $this->urlGenerator->linkToRouteAbsolute('user_saml.SAML.base'),
+			'idp-passthroughParameters' => $this->configurations[$idp]['idp-passthroughParameters'] ?? '',
 			'security' => [
 				'nameIdEncrypted' => ($this->configurations[$idp]['security-nameIdEncrypted'] ?? '0') === '1',
 				'authnRequestsSigned' => ($this->configurations[$idp]['security-authnRequestsSigned'] ?? '0') === '1',

templates/admin.php

@@ -153,6 +153,10 @@
 					<label class="user-saml-standalone-label" for="user-saml-x509cert"><?php p($l->t('Public X.509 certificate of the IdP')) ?></label><br/>
 					<textarea id="user-saml-x509cert" name="x509cert"><?php p($_['config']['idp-x509cert'] ?? '') ?></textarea>
 				</p>
+				<p>
+					<label class="user-saml-standalone-label" for="user-saml-idp-passthroughParameters"><?php p($l->t('Request parameters to pass-through to IdP (comma separated list)')) ?></label><br/>
+					<input id="user-saml-idp-passthroughParameters" name="idp-passthroughParameters" value="<?php p($_['config']['idp-passthroughParameters'] ?? '') ?>" type="text" placeholder="idp_hint,extra_parameter"/>
+				</p>
 			</div>
 		</div>
 

tests/integration/features/Shibboleth.feature

@@ -21,6 +21,23 @@ Feature: Shibboleth
     And The user value "id" should be "student1"
     And The last login timestamp of "student1" should not be empty
 
+  Scenario: Authenticating using Shibboleth with SAML and no check if user exists on backend and supply passthroughParameters
+    Given The config "idp-passthroughParameters" is "idp_hint,test_param"
+    And The setting "type" is set to "saml"
+    And The setting "general-require_provisioned_account" is set to "1"
+    And The setting "general-uid_mapping" is set to "urn:oid:0.9.2342.19200300.100.1.1"
+    And The setting "idp-entityId" is set to "https://shibboleth-integration-nextcloud.localdomain/idp/shibboleth"
+    And The setting "idp-singleSignOnService.url" is set to "https://localhost:4443/idp/profile/SAML2/Redirect/SSO"
+    And The setting "idp-x509cert" is set to "MIIDnTCCAoWgAwIBAgIUGPx9uPjCu7c172IUgV84Tm94pBcwDQYJKoZIhvcNAQEL BQAwNzE1MDMGA1UEAwwsc2hpYmJvbGV0aC1pbnRlZ3JhdGlvbi1uZXh0Y2xvdWQu bG9jYWxkb21haW4wHhcNMTcwMTA0MTAxMTI3WhcNMzcwMTA0MTAxMTI3WjA3MTUw MwYDVQQDDCxzaGliYm9sZXRoLWludGVncmF0aW9uLW5leHRjbG91ZC5sb2NhbGRv bWFpbjCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAKH+bPu45tk8/JRk XOxkyfbxocWZlY4mRumEUxscd3fn0oVzOrdWbHH7lCZV4bus4KxvJljc0Nm2K+Zr LoiRUUnf/LQ4LlehWVm5Kbc4kRgOXS0iGZN3SslAWPKyIg0tywg+TLOBPoS6EtST 1WuYg1JPMFxPfeFDWQ0dQYPlXIJWBFh6F2JMTb0FLECqA5l/ryYE13QisX5l+Mqo 6y3Dh7qIgaH0IJNobXoAcEWza7Kb2RnfhZRh9e0qjZIwBqTJUFM/6I86RYXn829s INUvYQQbez6VkGTdUQJ/GuXb/dD5sMQfOyK8hrRY5MozOmK32cz3JaAzSXpiSRS9 NxFwvicCAwEAAaOBoDCBnTAdBgNVHQ4EFgQUKn8+TV0WXSDeavvF0M8mWn1o8ukw fAYDVR0RBHUwc4Isc2hpYmJvbGV0aC1pbnRlZ3JhdGlvbi1uZXh0Y2xvdWQubG9j YWxkb21haW6GQ2h0dHBzOi8vc2hpYmJvbGV0aC1pbnRlZ3JhdGlvbi1uZXh0Y2xv dWQubG9jYWxkb21haW4vaWRwL3NoaWJib2xldGgwDQYJKoZIhvcNAQELBQADggEB ABI6uzoIeLZT9Az2KTlLxIc6jZ4MDmhaVja4ZuBxTXEb7BFLfeASEJmQm1wgIMOn pJId3Kh3njW+3tOBWKm7lj8JxVVpAu4yMFSoQGPaVUgYB1AVm+pmAyPLzfJ/XGhf esCU2F/b0eHWcaIb3x+BZFX089Cd/PBtP84MNXdo+TccibxC8N39sr45qJM/7SC7 TfDYU0L4q2WZHJr4S7+0F+F4KaxLx9NzCvN4h6XaoWofZWir2iHO4NzbrVQGC0ei QybS/neBfni4A2g1lyzCb6xFB58JBvNCn7AAnDJULOE7S5XWUKsDAQVQrxTNkUq7 pnhlCQqZDwUdgmIXd1KB1So="
+    And The setting "security-authnRequestsSigned" is set to "1"
+    And The setting "security-wantAssertionsEncrypted" is set to "1"
+    And The setting "sp-x509cert" is set to "-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----"
+    And The setting "sp-privateKey" is set to "-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----"
+    And The setting "security-wantAssertionsSigned" is set to "1"
+    When I send a GET request with query params to "http://localhost:8080/index.php/apps/user_saml/saml/login?idp_hint=hello&test_param=hey"
+    Then The config "idp-passthroughParameters" should be "idp_hint,test_param"
+    And I should be redirected to "https://localhost:4443/idp/profile/SAML2/Redirect/SSO?idp_hint=hello&test_param=hey" with query params
+
   Scenario: Authenticating using Shibboleth with SAML and check if user exists on backend and not existing user
     Given The setting "type" is set to "saml"
     And The setting "general-require_provisioned_account" is set to "1"

tests/integration/features/bootstrap/FeatureContext.php

@@ -1,4 +1,5 @@
 <?php
+
 /**
  * SPDX-FileCopyrightText: 2017 Nextcloud GmbH and Nextcloud contributors
  * SPDX-License-Identifier: AGPL-3.0-or-later
@@ -133,6 +134,41 @@ public function theSettingIsSetTo(string $settingName, string $value): void {
 			)
 		);
 	}
+	/**
+	 * @Given The config :configName is :value
+	 */
+	public function theConfigIs(string $configName, string $value): void {
+		shell_exec(
+			sprintf(
+				'%s %s saml:config:set --"%s"="%s" %d',
+				PHP_BINARY,
+				__DIR__ . '/../../../../../../occ',
+				$configName,
+				$value,
+				1
+			)
+		);
+	}
+	/**
+	 * @Then The config :configName should be :expectedValue
+	 */
+	public function theConfigShouldBe(string $configName, string $expectedValue): void {
+		$json = shell_exec(
+			sprintf(
+				'%s %s saml:config:get --providerId %d --output json',
+				PHP_BINARY,
+				__DIR__ . '/../../../../../../occ',
+				1
+			)
+		);
+		$json = json_decode($json);
+		$value = $json->{'1'}->$configName;
+		if ($value !== $expectedValue) {
+			throw new UnexpectedValueException(
+				sprintf('Config value for %s is %s, but expected was %s', $configName, $value, $expectedValue)
+			);
+		}
+	}
 
 	/**
 	 * @Then The setting :settingName is currently :expectedValue
@@ -189,6 +225,24 @@ public function iSendAGetRequestTo($url) {
 			]
 		);
 	}
+	/**
+	 * @When I send a GET request with query params to :url
+	 */
+	public function iSendAGetRequestWithQueryParamsTo($url) {
+		$url = $url . '&idp=1';
+		$query = parse_url($url)['query'];
+		$url = str_replace('?' . $query, '', $url);
+		$this->response = $this->client->request(
+			'GET',
+			$url,
+			[
+				'headers' => [
+					'Accept' => 'text/html',
+				],
+				'query' => $query
+			]
+		);
+	}
 
 	/**
 	 * @Then I should be redirected to :targetUrl
@@ -223,15 +277,65 @@ public function iShouldBeRedirectedTo($targetUrl) {
 			}
 		}
 	}
+	/**
+	 * @Then I should be redirected to :targetUrl with query params
+	 *
+	 * @param string $targetUrl
+	 * @throws InvalidArgumentException
+	 */
+	public function iShouldBeRedirectedToWithQueryParams($targetUrl) {
+		$redirectHeader = $this->response->getHeader('X-Guzzle-Redirect-History');
+		$firstUrl = $redirectHeader[0];
+		$firstUrlParsed = parse_url($firstUrl);
+		$targetUrl = parse_url($targetUrl);
+		$paramsToCheck = [
+			'scheme',
+			'host',
+			'path',
+			'query'
+		];
+
+		// Remove everything after a comma in the URL since cookies are passed there
+		[$firstUrlParsed['path']] = explode(';', $firstUrlParsed['path']);
+		$passthroughParams = $targetUrl['query'];
+		foreach ($paramsToCheck as $param) {
+			if ($param == 'query') {
+				foreach (explode('&', $passthroughParams) as $passthrough) {
+					if (!str_contains($firstUrl, $passthrough)) {
+						throw new InvalidArgumentException(
+							sprintf(
+								'Expected to find %s for parameter %s',
+								$passthrough,
+								$param,
+							)
+						);
+					}
+				}
+			} else {
+				if ($targetUrl[$param] !== $firstUrlParsed[$param]) {
+					throw new InvalidArgumentException(
+						sprintf(
+							'Expected %s for parameter %s, got %s',
+							$targetUrl[$param],
+							$param,
+							$firstUrlParsed[$param]
+						)
+					);
+				}
+			}
+		}
+	}
 
 	/**
 	 * @Then I send a POST request to :url with the following data
 	 *
 	 * @param string $url
 	 * @param TableNode $table
 	 */
-	public function iSendAPostRequestToWithTheFollowingData($url,
-		TableNode $table) {
+	public function iSendAPostRequestToWithTheFollowingData(
+		$url,
+		TableNode $table,
+	) {
 		$postParams = $table->getColumnsHash()[0];
 		$this->response = $this->client->request(
 			'POST',
@@ -351,7 +455,8 @@ public function theGroupHasExactlyTheMembers(string $group, string $memberList):
 					'format' => 'json',
 				],
 				'auth' => [
-					'admin', 'admin'
+					'admin',
+					'admin'
 				],
 				'cookies' => '',
 			]