Allow to disable password policy enforcement for selected groups

Signed-off-by: Carl Schwan <carl@carlschwan.eu>
Co-authored-by: Vincent Petry <vincent@nextcloud.com>
Signed-off-by: nextcloud-command <nextcloud-command@users.noreply.github.com>

apps/files_sharing/tests/CapabilitiesTest.php

@@ -139,6 +139,7 @@ class CapabilitiesTest extends \Test\TestCase {
 		$map = [
 			['core', 'shareapi_enabled', 'yes', 'yes'],
 			['core', 'shareapi_allow_links', 'yes', 'yes'],
+			['core', 'shareapi_enforce_links_password_excluded_groups', '', ''],
 		];
 		$result = $this->getResults($map);
 		$this->assertIsArray($result['public']);
@@ -149,6 +150,7 @@ class CapabilitiesTest extends \Test\TestCase {
 		$map = [
 			['core', 'shareapi_enabled', 'yes', 'yes'],
 			['core', 'shareapi_allow_links', 'yes', 'yes'],
+			['core', 'shareapi_enforce_links_password_excluded_groups', '', ''],
 			['core', 'shareapi_enforce_links_password', 'no', 'yes'],
 		];
 		$result = $this->getResults($map);
@@ -161,6 +163,7 @@ class CapabilitiesTest extends \Test\TestCase {
 		$map = [
 			['core', 'shareapi_enabled', 'yes', 'yes'],
 			['core', 'shareapi_allow_links', 'yes', 'yes'],
+			['core', 'shareapi_enforce_links_password_excluded_groups', '', ''],
 			['core', 'shareapi_enforce_links_password', 'no', 'no'],
 		];
 		$result = $this->getResults($map);
@@ -174,6 +177,7 @@ class CapabilitiesTest extends \Test\TestCase {
 			['core', 'shareapi_enabled', 'yes', 'yes'],
 			['core', 'shareapi_allow_links', 'yes', 'yes'],
 			['core', 'shareapi_default_expire_date', 'no', 'no'],
+			['core', 'shareapi_enforce_links_password_excluded_groups', '', ''],
 		];
 		$result = $this->getResults($map);
 		$this->assertArrayHasKey('expire_date', $result['public']);
@@ -188,6 +192,7 @@ class CapabilitiesTest extends \Test\TestCase {
 			['core', 'shareapi_default_expire_date', 'no', 'yes'],
 			['core', 'shareapi_expire_after_n_days', '7', '7'],
 			['core', 'shareapi_enforce_expire_date', 'no', 'no'],
+			['core', 'shareapi_enforce_links_password_excluded_groups', '', ''],
 		];
 		$result = $this->getResults($map);
 		$this->assertArrayHasKey('expire_date', $result['public']);
@@ -203,6 +208,7 @@ class CapabilitiesTest extends \Test\TestCase {
 			['core', 'shareapi_allow_links', 'yes', 'yes'],
 			['core', 'shareapi_default_expire_date', 'no', 'yes'],
 			['core', 'shareapi_enforce_expire_date', 'no', 'yes'],
+			['core', 'shareapi_enforce_links_password_excluded_groups', '', ''],
 		];
 		$result = $this->getResults($map);
 		$this->assertArrayHasKey('expire_date', $result['public']);
@@ -215,6 +221,7 @@ class CapabilitiesTest extends \Test\TestCase {
 			['core', 'shareapi_enabled', 'yes', 'yes'],
 			['core', 'shareapi_allow_links', 'yes', 'yes'],
 			['core', 'shareapi_allow_public_notification', 'no', 'yes'],
+			['core', 'shareapi_enforce_links_password_excluded_groups', '', ''],
 		];
 		$result = $this->getResults($map);
 		$this->assertTrue($result['public']['send_mail']);
@@ -225,6 +232,7 @@ class CapabilitiesTest extends \Test\TestCase {
 			['core', 'shareapi_enabled', 'yes', 'yes'],
 			['core', 'shareapi_allow_links', 'yes', 'yes'],
 			['core', 'shareapi_allow_public_notification', 'no', 'no'],
+			['core', 'shareapi_enforce_links_password_excluded_groups', '', ''],
 		];
 		$result = $this->getResults($map);
 		$this->assertFalse($result['public']['send_mail']);
@@ -234,6 +242,7 @@ class CapabilitiesTest extends \Test\TestCase {
 		$map = [
 			['core', 'shareapi_enabled', 'yes', 'yes'],
 			['core', 'shareapi_allow_resharing', 'yes', 'yes'],
+			['core', 'shareapi_enforce_links_password_excluded_groups', '', ''],
 		];
 		$result = $this->getResults($map);
 		$this->assertTrue($result['resharing']);
@@ -243,6 +252,7 @@ class CapabilitiesTest extends \Test\TestCase {
 		$map = [
 			['core', 'shareapi_enabled', 'yes', 'yes'],
 			['core', 'shareapi_allow_resharing', 'yes', 'no'],
+			['core', 'shareapi_enforce_links_password_excluded_groups', '', ''],
 		];
 		$result = $this->getResults($map);
 		$this->assertFalse($result['resharing']);
@@ -253,6 +263,7 @@ class CapabilitiesTest extends \Test\TestCase {
 			['core', 'shareapi_enabled', 'yes', 'yes'],
 			['core', 'shareapi_allow_links', 'yes', 'yes'],
 			['core', 'shareapi_allow_public_upload', 'yes', 'yes'],
+			['core', 'shareapi_enforce_links_password_excluded_groups', '', ''],
 		];
 		$result = $this->getResults($map);
 		$this->assertTrue($result['public']['upload']);
@@ -264,6 +275,7 @@ class CapabilitiesTest extends \Test\TestCase {
 			['core', 'shareapi_enabled', 'yes', 'yes'],
 			['core', 'shareapi_allow_links', 'yes', 'yes'],
 			['core', 'shareapi_allow_public_upload', 'yes', 'no'],
+			['core', 'shareapi_enforce_links_password_excluded_groups', '', ''],
 		];
 		$result = $this->getResults($map);
 		$this->assertFalse($result['public']['upload']);

apps/settings/lib/Settings/Admin/Sharing.php

@@ -72,6 +72,11 @@ class Sharing implements IDelegatedSettings {
 		$linksExcludeGroupsList = !is_null(json_decode($linksExcludedGroups))
 			? implode('|', json_decode($linksExcludedGroups, true)) : '';
 
+		$excludedPasswordGroups = $this->config->getAppValue('core', 'shareapi_enforce_links_password_excluded_groups', '');
+		$excludedPasswordGroupsList = !is_null(json_decode($excludedPasswordGroups))
+			? implode('|', json_decode($excludedPasswordGroups, true)) : '';
+
+
 		$parameters = [
 			// Built-In Sharing
 			'sharingAppEnabled' => $this->appManager->isEnabledForUser('files_sharing'),
@@ -84,7 +89,9 @@ class Sharing implements IDelegatedSettings {
 			'restrictUserEnumerationToGroup' => $this->config->getAppValue('core', 'shareapi_restrict_user_enumeration_to_group', 'no'),
 			'restrictUserEnumerationToPhone' => $this->config->getAppValue('core', 'shareapi_restrict_user_enumeration_to_phone', 'no'),
 			'restrictUserEnumerationFullMatch' => $this->config->getAppValue('core', 'shareapi_restrict_user_enumeration_full_match', 'yes'),
-			'enforceLinkPassword' => Util::isPublicLinkPasswordRequired(),
+			'enforceLinkPassword' => Util::isPublicLinkPasswordRequired(false),
+			'passwordExcludedGroups' => $excludedPasswordGroupsList,
+			'passwordExcludedGroupsFeatureEnabled' => $this->config->getSystemValueBool('sharing.allow_disabled_password_enforcement_groups', false),
 			'onlyShareWithGroupMembers' => $this->shareManager->shareWithGroupMembersOnly(),
 			'shareAPIEnabled' => $this->config->getAppValue('core', 'shareapi_enabled', 'yes'),
 			'shareDefaultExpireDateSet' => $this->config->getAppValue('core', 'shareapi_default_expire_date', 'no'),

apps/settings/src/admin.js

@@ -1,5 +1,5 @@
 window.addEventListener('DOMContentLoaded', () => {
-	$('#excludedGroups,#linksExcludedGroups').each((index, element) => {
+	$('#excludedGroups,#linksExcludedGroups,#passwordsExcludedGroups').each(function(index, element) {
 		OC.Settings.setupGroupsSelect($(element))
 		$(element).change((ev) => {
 			let groups = ev.val || []
@@ -93,6 +93,10 @@ window.addEventListener('DOMContentLoaded', () => {
 		$('#setDefaultRemoteExpireDate').toggleClass('hidden', !this.checked)
 	})
 
+	$('#enforceLinkPassword').change(function() {
+		$('#selectPasswordsExcludedGroups').toggleClass('hidden', !this.checked)
+	})
+
 	$('#publicShareDisclaimer').change(function() {
 		$('#publicShareDisclaimerText').toggleClass('hidden', !this.checked)
 		if (!this.checked) {

apps/settings/templates/settings/admin/sharing.php

@@ -120,6 +120,18 @@
 } ?> />
 			<label for="enforceLinkPassword"><?php p($l->t('Enforce password protection'));?></label><br/>
 
+<?php if ($_['passwordExcludedGroupsFeatureEnabled']) { ?>
+			<div id="selectPasswordsExcludedGroups" class="indent <?php if (!$_['enforceLinkPassword']) { p('hidden'); } ?>">
+				<div class="indent">
+					<label for="shareapi_enforce_links_password_excluded_groups"><?php p($l->t('Exclude groups from password requirements:'));?>
+					<br />
+					<input name="shareapi_enforce_links_password_excluded_groups" id="passwordsExcludedGroups" value="<?php p($_['passwordExcludedGroups']) ?>" style="width: 400px" class="noJSAutoUpdate"/>
+				</div>
+			</div>
+<?php } ?>
+
+			<input type="checkbox" name="shareapi_default_expire_date" id="shareapiDefaultExpireDate" class="checkbox" value="1" <?php if ($_['shareDefaultExpireDateSet'] === 'yes') { print_unescaped('checked="checked"'); } ?> />
+
 			<input type="checkbox" name="shareapi_default_expire_date" id="shareapiDefaultExpireDate" class="checkbox"
 				   value="1" <?php if ($_['shareDefaultExpireDateSet'] === 'yes') {
 	print_unescaped('checked="checked"');

apps/settings/tests/Settings/Admin/SharingTest.php

@@ -135,6 +135,8 @@ class SharingTest extends TestCase {
 				'shareRemoteExpireAfterNDays' => '7',
 				'shareRemoteEnforceExpireDate' => 'no',
 				'allowLinksExcludeGroups' => '',
+				'passwordExcludedGroups' => '',
+				'passwordExcludedGroupsFeatureEnabled' => false,
 			],
 			''
 		);
@@ -208,6 +210,8 @@ class SharingTest extends TestCase {
 				'shareRemoteExpireAfterNDays' => '7',
 				'shareRemoteEnforceExpireDate' => 'no',
 				'allowLinksExcludeGroups' => '',
+				'passwordExcludedGroups' => '',
+				'passwordExcludedGroupsFeatureEnabled' => false,
 			],
 			''
 		);

config/config.sample.php

@@ -1572,6 +1572,11 @@ $CONFIG = [
  */
 'sharing.enable_share_mail' => true,
 
+/**
+ * Set to true to enable the feature to add exceptions for share password enforcement
+ */
+'sharing.allow_disabled_password_enforcement_groups' => false,
+
 /**
  * Set to true to always transfer incoming shares by default
  * when running "occ files:transfer-ownership".

lib/private/Share20/Manager.php

@@ -1784,9 +1784,21 @@ class Manager implements IManager {
 	/**
 	 * Is password on public link requires
 	 *
+	 * @param bool Check group membership exclusion
 	 * @return bool
 	 */
-	public function shareApiLinkEnforcePassword() {
+	public function shareApiLinkEnforcePassword(bool $checkGroupMembership = true) {
+		$excludedGroups = $this->config->getAppValue('core', 'shareapi_enforce_links_password_excluded_groups', '');
+		if ($excludedGroups !== '' && $checkGroupMembership) {
+			$excludedGroups = json_decode($excludedGroups);
+			$user = $this->userSession->getUser();
+			if ($user) {
+				$userGroups = $this->groupManager->getUserGroupIds($user);
+				if ((bool)array_intersect($excludedGroups, $userGroups)) {
+					return false;
+				}
+			}
+		}
 		return $this->config->getAppValue('core', 'shareapi_enforce_links_password', 'no') === 'yes';
 	}
 

lib/private/legacy/OC_Util.php

@@ -116,15 +116,16 @@ class OC_Util {
 	}
 
 	/**
-	 * check if a password is required for each public link
+	 * Check if a password is required for each public link
 	 *
+	 * @param bool $checkGroupMembership Check group membership exclusion
 	 * @return boolean
 	 * @suppress PhanDeprecatedFunction
 	 */
-	public static function isPublicLinkPasswordRequired() {
+	public static function isPublicLinkPasswordRequired(bool $checkGroupMembership = true) {
 		/** @var IManager $shareManager */
 		$shareManager = \OC::$server->get(IManager::class);
-		return $shareManager->shareApiLinkEnforcePassword();
+		return $shareManager->shareApiLinkEnforcePassword($checkGroupMembership);
 	}
 
 	/**

lib/public/Share/IManager.php

@@ -321,10 +321,12 @@ interface IManager {
 	/**
 	 * Is password on public link requires
 	 *
+	 * @param bool $checkGroupMembership Check group membership exclusion
 	 * @return bool
 	 * @since 9.0.0
+	 * @since 24.0.0 Added optional $checkGroupMembership parameter
 	 */
-	public function shareApiLinkEnforcePassword();
+	public function shareApiLinkEnforcePassword(bool $checkGroupMembership = true);
 
 	/**
 	 * Is default expire date enabled

lib/public/Util.php

@@ -547,12 +547,14 @@ class Util {
 	}
 
 	/**
-	 * check if a password is required for each public link
+	 * Check if a password is required for each public link
+	 *
+	 * @param bool $checkGroupMembership Check group membership exclusion
 	 * @return boolean
 	 * @since 7.0.0
 	 */
-	public static function isPublicLinkPasswordRequired() {
-		return \OC_Util::isPublicLinkPasswordRequired();
+	public static function isPublicLinkPasswordRequired(bool $checkGroupMembership = true) {
+		return \OC_Util::isPublicLinkPasswordRequired($checkGroupMembership);
 	}
 
 	/**

tests/lib/Share20/ManagerTest.php

@@ -505,14 +505,46 @@ class ManagerTest extends \Test\TestCase {
 		$this->expectExceptionMessage('Passwords are enforced for link and mail shares');
 
 		$this->config->method('getAppValue')->willReturnMap([
+			['core', 'shareapi_enforce_links_password_excluded_groups', '', ''],
 			['core', 'shareapi_enforce_links_password', 'no', 'yes'],
 		]);
 
 		self::invokePrivate($this->manager, 'verifyPassword', [null]);
 	}
 
+	public function testVerifyPasswordNotEnforcedGroup() {
+		$this->config->method('getAppValue')->willReturnMap([
+			['core', 'shareapi_enforce_links_password_excluded_groups', '', '["admin"]'],
+			['core', 'shareapi_enforce_links_password', 'no', 'yes'],
+		]);
+
+		// Create admin user
+		$user = $this->createMock(IUser::class);
+		$this->userSession->method('getUser')->willReturn($user);
+		$this->groupManager->method('getUserGroupIds')->with($user)->willReturn(['admin']);
+
+		$result = self::invokePrivate($this->manager, 'verifyPassword', [null]);
+		$this->assertNull($result);
+	}
+
+	public function testVerifyPasswordNotEnforcedMultipleGroups() {
+		$this->config->method('getAppValue')->willReturnMap([
+			['core', 'shareapi_enforce_links_password_excluded_groups', '', '["admin", "special"]'],
+			['core', 'shareapi_enforce_links_password', 'no', 'yes'],
+		]);
+
+		// Create admin user
+		$user = $this->createMock(IUser::class);
+		$this->userSession->method('getUser')->willReturn($user);
+		$this->groupManager->method('getUserGroupIds')->with($user)->willReturn(['special']);
+
+		$result = self::invokePrivate($this->manager, 'verifyPassword', [null]);
+		$this->assertNull($result);
+	}
+
 	public function testVerifyPasswordNull() {
 		$this->config->method('getAppValue')->willReturnMap([
+			['core', 'shareapi_enforce_links_password_excluded_groups', '', ''],
 			['core', 'shareapi_enforce_links_password', 'no', 'no'],
 		]);
 
@@ -522,6 +554,7 @@ class ManagerTest extends \Test\TestCase {
 
 	public function testVerifyPasswordHook() {
 		$this->config->method('getAppValue')->willReturnMap([
+			['core', 'shareapi_enforce_links_password_excluded_groups', '', ''],
 			['core', 'shareapi_enforce_links_password', 'no', 'no'],
 		]);
 
@@ -543,6 +576,7 @@ class ManagerTest extends \Test\TestCase {
 		$this->expectExceptionMessage('password not accepted');
 
 		$this->config->method('getAppValue')->willReturnMap([
+			['core', 'shareapi_enforce_links_password_excluded_groups', '', ''],
 			['core', 'shareapi_enforce_links_password', 'no', 'no'],
 		]);