Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
| 1 | <?php  | 
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| 45 | class OcmController extends Controller { | 
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| 46 | const API_VERSION = '1.0-proposal1';  | 
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| 47 | |||
| 48 | /**  | 
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| 49 | * @var OcmMiddleware  | 
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| 50 | */  | 
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| 51 | private $ocmMiddleware;  | 
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| 52 | |||
| 53 | /**  | 
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| 54 | * @var IURLGenerator  | 
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| 55 | */  | 
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| 56 | protected $urlGenerator;  | 
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| 57 | |||
| 58 | /**  | 
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| 59 | * @var IUserManager  | 
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| 60 | */  | 
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| 61 | protected $userManager;  | 
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| 62 | |||
| 63 | /**  | 
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| 64 | * @var AddressHandler  | 
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| 65 | */  | 
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| 66 | protected $addressHandler;  | 
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| 67 | |||
| 68 | /**  | 
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| 69 | * @var FedShareManager  | 
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| 70 | */  | 
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| 71 | protected $fedShareManager;  | 
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| 72 | |||
| 73 | /**  | 
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| 74 | * @var ILogger  | 
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| 75 | */  | 
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| 76 | protected $logger;  | 
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| 77 | |||
| 78 | /**  | 
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| 79 | * OcmController constructor.  | 
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| 80 | *  | 
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| 81 | * @param string $appName  | 
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| 82 | * @param IRequest $request  | 
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| 83 | * @param OcmMiddleware $ocmMiddleware  | 
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| 84 | * @param IURLGenerator $urlGenerator  | 
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| 85 | * @param IUserManager $userManager  | 
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| 86 | * @param AddressHandler $addressHandler  | 
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| 87 | * @param FedShareManager $fedShareManager  | 
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| 88 | * @param ILogger $logger  | 
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| 89 | */  | 
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| 90 | View Code Duplication | public function __construct($appName,  | 
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| 91 | IRequest $request,  | 
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| 92 | OcmMiddleware $ocmMiddleware,  | 
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| 93 | IURLGenerator $urlGenerator,  | 
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| 94 | IUserManager $userManager,  | 
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| 95 | AddressHandler $addressHandler,  | 
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| 96 | FedShareManager $fedShareManager,  | 
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| 97 | ILogger $logger  | 
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| 98 | 	) { | 
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| 99 | parent::__construct($appName, $request);  | 
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| 100 | |||
| 101 | $this->ocmMiddleware = $ocmMiddleware;  | 
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| 102 | $this->urlGenerator = $urlGenerator;  | 
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| 103 | $this->userManager = $userManager;  | 
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| 104 | $this->addressHandler = $addressHandler;  | 
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| 105 | $this->fedShareManager = $fedShareManager;  | 
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| 106 | $this->logger = $logger;  | 
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| 107 | }  | 
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| 108 | |||
| 109 | /**  | 
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| 110 | * @NoCSRFRequired  | 
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| 111 | * @PublicPage  | 
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| 112 | *  | 
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| 113 | * EndPoint discovery  | 
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| 114 | * Responds to /ocm-provider/ requests  | 
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| 115 | *  | 
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| 116 | * @return array  | 
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| 117 | */  | 
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| 118 | 	public function discovery() { | 
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| 119 | $endPoint = $this->urlGenerator->linkToRouteAbsolute(  | 
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| 120 | 			"{$this->appName}.ocm.index" | 
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| 121 | );  | 
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| 122 | return [  | 
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| 123 | 'enabled' => true,  | 
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| 124 | 'apiVersion' => self::API_VERSION,  | 
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| 125 | 'endPoint' => \rtrim($endPoint, '/'),  | 
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| 126 | 'shareTypes' => [  | 
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| 127 | [  | 
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| 128 | 'name' => FileNotification::RESOURCE_TYPE_FILE,  | 
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| 129 | 'protocols' => $this->getProtocols()  | 
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| 130 | ]  | 
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| 131 | ]  | 
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| 132 | ];  | 
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| 133 | }  | 
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| 134 | |||
| 135 | /**  | 
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| 136 | * @NoCSRFRequired  | 
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| 137 | * @PublicPage  | 
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| 138 | *  | 
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| 139 | * @param string $shareWith identifier of the user or group  | 
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| 140 | * to share the resource with  | 
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| 141 | * @param string $name name of the shared resource  | 
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| 142 | * @param string $description share description (optional)  | 
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| 143 | * @param string $providerId Identifier of the resource at the provider side  | 
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| 144 | * @param string $owner identifier of the user that owns the resource  | 
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| 145 | * @param string $ownerDisplayName display name of the owner  | 
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| 146 | * @param string $sender Provider specific identifier of the user that wants  | 
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| 147 | * to share the resource  | 
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| 148 | * @param string $senderDisplayName Display name of the user that wants  | 
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| 149 | * to share the resource  | 
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| 150 | 	 * @param string $shareType Share type ('user' is supported atm) | 
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| 151 | * @param string $resourceType only 'file' is supported atm  | 
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| 152 | * @param array $protocol  | 
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| 153 | * [  | 
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| 154 | * 'name' => (string) protocol name. Only 'webdav' is supported atm,  | 
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| 155 | * 'options' => [  | 
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| 156 | * protocol specific options  | 
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| 157 | * only `webdav` options are supported atm  | 
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| 158 | * e.g. `uri`, `access_token`, `password`, `permissions` etc.  | 
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| 159 | *  | 
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| 160 | * For backward compatibility the webdav protocol will use  | 
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| 161 | * the 'sharedSecret" as username and password  | 
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| 162 | * ]  | 
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| 163 | *  | 
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| 164 | * @return JSONResponse  | 
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| 165 | */  | 
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| 166 | public function createShare($shareWith,  | 
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| 167 | $name,  | 
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| 168 | $description,  | 
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                         | 
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| 169 | $providerId,  | 
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| 170 | $owner,  | 
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| 171 | $ownerDisplayName,  | 
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| 172 | $sender,  | 
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| 173 | $senderDisplayName,  | 
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| 174 | $shareType,  | 
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| 175 | $resourceType,  | 
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| 176 | $protocol  | 
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| 177 | |||
| 178 | 	) { | 
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| 179 | 		try { | 
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| 180 | $this->ocmMiddleware->assertIncomingSharingEnabled();  | 
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| 181 | $this->ocmMiddleware->assertNotNull(  | 
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| 182 | [  | 
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| 183 | 'shareWith' => $shareWith,  | 
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| 184 | 'name' => $name,  | 
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| 185 | 'providerId' => $providerId,  | 
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| 186 | 'owner' => $owner,  | 
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| 187 | 'shareType' => $shareType,  | 
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| 188 | 'resourceType' => $resourceType  | 
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| 189 | ]  | 
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| 190 | );  | 
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| 191 | if (!\is_array($protocol)  | 
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| 192 | || !isset($protocol['name'])  | 
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| 193 | || !isset($protocol['options'])  | 
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| 194 | || !\is_array($protocol['options'])  | 
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| 195 | || !isset($protocol['options']['sharedSecret'])  | 
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| 196 | 			) { | 
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| 197 | throw new BadRequestException(  | 
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| 198 | 'server can not add remote share, missing parameter'  | 
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| 199 | );  | 
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| 200 | }  | 
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| 201 | 			if (!\OCP\Util::isValidFileName($name)) { | 
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| 202 | throw new BadRequestException(  | 
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| 203 | 'The mountpoint name contains invalid characters.'  | 
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| 204 | );  | 
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| 205 | }  | 
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| 206 | |||
| 207 | $shareWithAddress = new Address($shareWith);  | 
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| 208 | $localShareWith = $shareWithAddress->getUserId();  | 
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| 209 | |||
| 210 | // FIXME this should be a method in the user management instead  | 
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| 211 | $this->logger->debug(  | 
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| 212 | "shareWith before, $localShareWith",  | 
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| 213 | ['app' => $this->appName]  | 
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| 214 | );  | 
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| 215 | \OCP\Util::emitHook(  | 
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| 216 | '\OCA\Files_Sharing\API\Server2Server',  | 
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| 217 | 'preLoginNameUsedAsUserName',  | 
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| 218 | ['uid' => &$localShareWith]  | 
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| 219 | );  | 
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| 220 | $this->logger->debug(  | 
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| 221 | "shareWith after, $localShareWith",  | 
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| 222 | ['app' => $this->appName]  | 
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| 223 | );  | 
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| 224 | |||
| 225 | 			if ($this->isSupportedProtocol($protocol['name']) === false) { | 
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| 226 | throw new NotImplementedException(  | 
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| 227 | 					"Protocol {$protocol['name']} is not supported" | 
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| 228 | );  | 
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| 229 | }  | 
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| 230 | |||
| 231 | 			if ($this->isSupportedShareType($shareType) === false) { | 
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| 232 | throw new NotImplementedException(  | 
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| 233 | 					"ShareType {$shareType} is not supported" | 
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| 234 | );  | 
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| 235 | }  | 
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| 236 | |||
| 237 | 			if ($this->isSupportedResourceType($resourceType) === false) { | 
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| 238 | throw new NotImplementedException(  | 
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| 239 | 					"ResourceType {$resourceType} is not supported" | 
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| 240 | );  | 
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| 241 | }  | 
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| 242 | |||
| 243 | 			if (!$this->userManager->userExists($localShareWith)) { | 
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| 244 | 				throw new BadRequestException("User $localShareWith does not exist"); | 
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| 245 | }  | 
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| 246 | |||
| 247 | $ownerAddress = new Address($owner, $ownerDisplayName);  | 
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| 248 | $sharedByAddress = new Address($sender, $senderDisplayName);  | 
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| 249 | |||
| 250 | $this->fedShareManager->createShare(  | 
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| 251 | $ownerAddress,  | 
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| 252 | $sharedByAddress,  | 
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| 253 | $localShareWith,  | 
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| 254 | $providerId,  | 
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| 255 | $name,  | 
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| 256 | $protocol['options']['sharedSecret']  | 
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| 257 | );  | 
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| 258 | 		} catch (OcmException $e) { | 
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| 259 | return new JSONResponse(  | 
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| 260 | ['message' => $e->getMessage()],  | 
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| 261 | $e->getHttpStatusCode()  | 
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| 262 | );  | 
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| 263 | 		} catch (\Exception $e) { | 
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| 264 | $this->logger->error(  | 
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| 265 | 				"server can not add remote share, {$e->getMessage()}", | 
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| 266 | ['app' => 'federatefilesharing']  | 
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| 267 | );  | 
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| 268 | return new JSONResponse(  | 
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| 269 | [  | 
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| 270 | 					'message' => "internal server error, was not able to add share from {$ownerAddress->getHostName()}" | 
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| 271 | ],  | 
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| 272 | Http::STATUS_INTERNAL_SERVER_ERROR  | 
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| 273 | );  | 
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| 274 | }  | 
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| 275 | return new JSONResponse(  | 
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| 276 | [],  | 
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| 277 | Http::STATUS_CREATED  | 
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| 278 | );  | 
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| 279 | }  | 
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| 280 | |||
| 281 | /**  | 
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| 282 | * @NoCSRFRequired  | 
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| 283 | * @PublicPage  | 
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| 284 | *  | 
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| 285 | * @param string $notificationType notification type (SHARE_REMOVED, etc)  | 
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| 286 | * @param string $resourceType only 'file' is supported atm  | 
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| 287 | * @param string $providerId Identifier of the resource at the provider side  | 
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| 288 | * @param array $notification  | 
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| 289 | * [  | 
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| 290 | * optional additional parameters, depending on the notification  | 
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| 291 | * and the resource type  | 
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| 292 | * ]  | 
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| 293 | *  | 
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| 294 | * @return JSONResponse  | 
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| 295 | */  | 
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| 296 | public function processNotification($notificationType,  | 
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| 297 | $resourceType,  | 
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| 298 | $providerId,  | 
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| 299 | $notification  | 
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| 300 | 	) { | 
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| 301 | 		try { | 
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| 302 | $this->ocmMiddleware->assertNotNull(  | 
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| 303 | [  | 
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| 304 | 'notificationType' => $notificationType,  | 
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| 305 | 'resourceType' => $resourceType,  | 
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| 306 | 'providerId' => $providerId  | 
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| 307 | ]  | 
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| 308 | );  | 
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| 309 | 			if (!\is_array($notification)) { | 
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| 310 | throw new BadRequestException(  | 
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| 311 | 'server can not add remote share, missing parameter'  | 
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| 312 | );  | 
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| 313 | }  | 
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| 314 | |||
| 315 | 			if ($this->isSupportedResourceType($resourceType) === false) { | 
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| 316 | throw new NotImplementedException(  | 
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| 317 | 					"ResourceType {$resourceType} is not supported" | 
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| 318 | );  | 
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| 319 | }  | 
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| 320 | // TODO: check permissions/preconditions in all cases  | 
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| 321 | 			switch ($notificationType) { | 
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| 322 | View Code Duplication | case FileNotification::NOTIFICATION_TYPE_SHARE_ACCEPTED:  | 
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| 323 | $this->ocmMiddleware->assertOutgoingSharingEnabled();  | 
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| 324 | $share = $this->ocmMiddleware->getValidShare(  | 
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| 325 | $providerId, $notification['sharedSecret']  | 
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| 326 | );  | 
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| 327 | $this->fedShareManager->acceptShare($share);  | 
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| 328 | break;  | 
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| 329 | View Code Duplication | case FileNotification::NOTIFICATION_TYPE_SHARE_DECLINED:  | 
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| 330 | $this->ocmMiddleware->assertOutgoingSharingEnabled();  | 
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| 331 | $share = $this->ocmMiddleware->getValidShare(  | 
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| 332 | $providerId, $notification['sharedSecret']  | 
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| 333 | );  | 
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| 334 | $this->fedShareManager->declineShare($share);  | 
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| 335 | break;  | 
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| 336 | case FileNotification::NOTIFICATION_TYPE_REQUEST_RESHARE:  | 
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| 337 | $this->ocmMiddleware->assertOutgoingSharingEnabled();  | 
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| 338 | $this->ocmMiddleware->assertNotNull(  | 
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| 339 | [  | 
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| 340 | 'shareWith' => $notification['shareWith'],  | 
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| 341 | 'senderId' => $notification['senderId'],  | 
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| 342 | ]  | 
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| 343 | );  | 
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| 344 | $share = $this->ocmMiddleware->getValidShare(  | 
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| 345 | $providerId, $notification['sharedSecret']  | 
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| 346 | );  | 
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| 347 | |||
| 348 | // don't allow to share a file back to the owner  | 
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| 349 | $owner = $share->getShareOwner();  | 
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| 350 | $ownerAddress = $this->addressHandler->getLocalUserFederatedAddress($owner);  | 
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| 351 | $shareWithAddress = new Address($notification['shareWith']);  | 
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| 352 | $this->ocmMiddleware->assertNotSameUser($ownerAddress, $shareWithAddress);  | 
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| 353 | $this->ocmMiddleware->assertSharingPermissionSet($share);  | 
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| 354 | |||
| 355 | // TODO: permissions not needed ???  | 
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| 356 | $reShare = $this->fedShareManager->reShare(  | 
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| 357 | $share, $notification['senderId'],  | 
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| 358 | $notification['shareWith'],  | 
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| 359 | 0  | 
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| 360 | );  | 
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| 361 | return new JSONResponse(  | 
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| 362 | [  | 
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| 363 | 'sharedSecret' => $reShare->getToken(),  | 
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| 364 | 'providerId' => $reShare->getId()  | 
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| 365 | ],  | 
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| 366 | Http::STATUS_CREATED  | 
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| 367 | );  | 
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| 368 | break;  | 
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| 369 | case FileNotification::NOTIFICATION_TYPE_RESHARE_CHANGE_PERMISSION:  | 
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| 370 | $permissions = $notification['permission'];  | 
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| 371 | // TODO: Map OCM permissions to numeric  | 
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| 372 | $share = $this->ocmMiddleware->getValidShare(  | 
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| 373 | $providerId, $notification['sharedSecret']  | 
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| 374 | );  | 
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| 375 | $this->fedShareManager->updatePermissions($share, $permissions);  | 
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| 376 | break;  | 
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| 377 | case FileNotification::NOTIFICATION_TYPE_SHARE_UNSHARED:  | 
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| 378 | $this->fedShareManager->unshare(  | 
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| 379 | $providerId, $notification['sharedSecret']  | 
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| 380 | );  | 
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| 381 | break;  | 
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| 382 | case FileNotification::NOTIFICATION_TYPE_RESHARE_UNDO:  | 
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| 383 | $share = $this->ocmMiddleware->getValidShare(  | 
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| 384 | $providerId, $notification['sharedSecret']  | 
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| 385 | );  | 
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| 386 | $this->fedShareManager->revoke($share);  | 
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| 387 | break;  | 
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| 388 | default:  | 
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| 389 | return new JSONResponse(  | 
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| 390 | 						['message' => "Notification of type {$notificationType} is not supported"], | 
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| 391 | Http::STATUS_NOT_IMPLEMENTED  | 
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| 392 | );  | 
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| 393 | }  | 
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| 394 | 		} catch (OcmException $e) { | 
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| 395 | return new JSONResponse(  | 
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| 396 | ['message' => $e->getMessage()],  | 
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| 397 | $e->getHttpStatusCode()  | 
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| 398 | );  | 
            ||
| 399 | 		} catch (\Exception $e) { | 
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| 400 | $this->logger->error(  | 
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| 401 | 				"server can not process notification, {$e->getMessage()}", | 
            ||
| 402 | ['app' => 'federatefilesharing']  | 
            ||
| 403 | );  | 
            ||
| 404 | return new JSONResponse(  | 
            ||
| 405 | [  | 
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| 406 | 'message' => "internal server error, was not able to process notification"  | 
            ||
| 407 | ],  | 
            ||
| 408 | Http::STATUS_INTERNAL_SERVER_ERROR  | 
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| 409 | );  | 
            ||
| 410 | }  | 
            ||
| 411 | return new JSONResponse(  | 
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| 412 | [],  | 
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| 413 | Http::STATUS_CREATED  | 
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| 414 | );  | 
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| 415 | }  | 
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| 416 | |||
| 417 | /**  | 
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| 418 | * Get list of supported protocols  | 
            ||
| 419 | *  | 
            ||
| 420 | * @return array  | 
            ||
| 421 | */  | 
            ||
| 422 | 	protected function getProtocols() { | 
            ||
| 423 | return [  | 
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| 424 | 'webdav' => '/public.php/webdav/'  | 
            ||
| 425 | ];  | 
            ||
| 426 | }  | 
            ||
| 427 | |||
| 428 | /**  | 
            ||
| 429 | * @param string $resourceType  | 
            ||
| 430 | *  | 
            ||
| 431 | * @return bool  | 
            ||
| 432 | */  | 
            ||
| 433 | 	protected function isSupportedResourceType($resourceType) { | 
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| 436 | |||
| 437 | /**  | 
            ||
| 438 | * @param string $shareType  | 
            ||
| 439 | * @return bool  | 
            ||
| 440 | */  | 
            ||
| 441 | 	protected function isSupportedShareType($shareType) { | 
            ||
| 445 | |||
| 446 | /**  | 
            ||
| 447 | * @param string $protocolName  | 
            ||
| 448 | * @return bool  | 
            ||
| 449 | */  | 
            ||
| 450 | 	protected function isSupportedProtocol($protocolName) { | 
            ||
| 455 | }  | 
            ||
| 456 | 
This check looks from parameters that have been defined for a function or method, but which are not used in the method body.