示例#1
0
文件: Context.php 项目: krecek/nrsn
	/**
	 * Attempts to cache the sent entity by its last modification date.
	 * @param  string|int|DateTime  last modified time
	 * @param  string  strong entity tag validator
	 * @return bool
	 */
	public function isModified($lastModified = NULL, $etag = NULL)
	{
		if ($lastModified) {
			$this->response->setHeader('Last-Modified', $this->response->date($lastModified));
		}
		if ($etag) {
			$this->response->setHeader('ETag', '"' . addslashes($etag) . '"');
		}

		$ifNoneMatch = $this->request->getHeader('If-None-Match');
		if ($ifNoneMatch === '*') {
			$match = TRUE; // match, check if-modified-since

		} elseif ($ifNoneMatch !== NULL) {
			$etag = $this->response->getHeader('ETag');

			if ($etag == NULL || strpos(' ' . strtr($ifNoneMatch, ",\t", '  '), ' ' . $etag) === FALSE) {
				return TRUE;

			} else {
				$match = TRUE; // match, check if-modified-since
			}
		}

		$ifModifiedSince = $this->request->getHeader('If-Modified-Since');
		if ($ifModifiedSince !== NULL) {
			$lastModified = $this->response->getHeader('Last-Modified');
			if ($lastModified != NULL && strtotime($lastModified) <= strtotime($ifModifiedSince)) {
				$match = TRUE;

			} else {
				return TRUE;
			}
		}

		if (empty($match)) {
			return TRUE;
		}

		$this->response->setCode(IHttpResponse::S304_NOT_MODIFIED);
		return FALSE;
	}
示例#2
0
 /**
  * Sends response to output.
  * @return void
  */
 public function send(IHttpRequest $httpRequest, IHttpResponse $httpResponse)
 {
     $httpResponse->setContentType($this->contentType);
     $httpResponse->setHeader('Content-Disposition', 'attachment; filename="' . $this->name . '"');
     $filesize = $length = filesize($this->file);
     $handle = fopen($this->file, 'r');
     if ($this->resuming) {
         $httpResponse->setHeader('Accept-Ranges', 'bytes');
         if (preg_match('#^bytes=(\\d*)-(\\d*)$#', $httpRequest->getHeader('Range'), $matches)) {
             list(, $start, $end) = $matches;
             if ($start === '') {
                 $start = max(0, $filesize - $end);
                 $end = $filesize - 1;
             } elseif ($end === '' || $end > $filesize - 1) {
                 $end = $filesize - 1;
             }
             if ($end < $start) {
                 $httpResponse->setCode(416);
                 // requested range not satisfiable
                 return;
             }
             $httpResponse->setCode(206);
             $httpResponse->setHeader('Content-Range', 'bytes ' . $start . '-' . $end . '/' . $filesize);
             $length = $end - $start + 1;
             fseek($handle, $start);
         } else {
             $httpResponse->setHeader('Content-Range', 'bytes 0-' . ($filesize - 1) . '/' . $filesize);
         }
     }
     $httpResponse->setHeader('Content-Length', $length);
     while (!feof($handle) && $length > 0) {
         echo $s = fread($handle, min(4000000.0, $length));
         $length -= strlen($s);
     }
     fclose($handle);
 }
示例#3
0
	/**
	 * Sends response to output.
	 * @return void
	 */
	public function send(IHttpRequest $httpRequest, IHttpResponse $httpResponse)
	{
		$httpResponse->setContentType($this->contentType);
		$httpResponse->setHeader('Content-Disposition', 'attachment; filename="' . $this->name . '"');

		$filesize = $length = filesize($this->file);
		$handle = fopen($this->file, 'r');

		if ($this->resuming) {
			$httpResponse->setHeader('Accept-Ranges', 'bytes');
			$range = $httpRequest->getHeader('Range');
			if ($range !== NULL) {
				$range = substr($range, 6); // 6 == strlen('bytes=')
				list($start, $end) = explode('-', $range);
				if ($start == NULL) {
					$start = 0;
				}
				if ($end == NULL) {
					$end = $filesize - 1;
				}

				if ($start < 0 || $end <= $start || $end > $filesize -1) {
					$httpResponse->setCode(416); // requested range not satisfiable
					return;
				}

				$httpResponse->setCode(206);
				$httpResponse->setHeader('Content-Range', 'bytes ' . $start . '-' . $end . '/' . $filesize);
				$length = $end - $start + 1;
				fseek($handle, $start);

			} else {
				$httpResponse->setHeader('Content-Range', 'bytes 0-' . ($filesize - 1) . '/' . $filesize);
			}
		}

		$httpResponse->setHeader('Content-Length', $length);
		while (!feof($handle)) {
			echo fread($handle, 4e6);
		}
		fclose($handle);
	}
示例#4
0
	/**
	 * Dispatch a HTTP request to a front controller.
	 * @return void
	 */
	public function run()
	{
		$request = NULL;
		$repeatedError = FALSE;
		do {
			try {
				if (count($this->requests) > self::$maxLoop) {
					throw new NApplicationException('Too many loops detected in application life cycle.');
				}

				if (!$request) {
					$this->onStartup($this);

					$request = $this->router->match($this->httpRequest);
					if (!$request instanceof NPresenterRequest) {
						$request = NULL;
						throw new NBadRequestException('No route for HTTP request.');
					}

					if (strcasecmp($request->getPresenterName(), $this->errorPresenter) === 0) {
						throw new NBadRequestException('Invalid request. Presenter is not achievable.');
					}
				}

				$this->requests[] = $request;
				$this->onRequest($this, $request);

				// Instantiate presenter
				$presenterName = $request->getPresenterName();
				try {
					$this->presenter = $this->presenterFactory->createPresenter($presenterName);
				} catch (NInvalidPresenterException $e) {
					throw new NBadRequestException($e->getMessage(), 404, $e);
				}

				$this->presenterFactory->getPresenterClass($presenterName);
				$request->setPresenterName($presenterName);
				$request->freeze();

				// Execute presenter
				$response = $this->presenter->run($request);
				if ($response) {
					$this->onResponse($this, $response);
				}

				// Send response
				if ($response instanceof NForwardResponse) {
					$request = $response->getRequest();
					continue;

				} elseif ($response instanceof IPresenterResponse) {
					$response->send($this->httpRequest, $this->httpResponse);
				}
				break;

			} catch (Exception $e) {
				// fault barrier
				$this->onError($this, $e);

				if (!$this->catchExceptions) {
					$this->onShutdown($this, $e);
					throw $e;
				}

				if ($repeatedError) {
					$e = new NApplicationException('An error occurred while executing error-presenter', 0, $e);
				}

				if (!$this->httpResponse->isSent()) {
					$this->httpResponse->setCode($e instanceof NBadRequestException ? $e->getCode() : 500);
				}

				if (!$repeatedError && $this->errorPresenter) {
					$repeatedError = TRUE;
					if ($this->presenter instanceof NPresenter) {
						try {
							$this->presenter->forward(":$this->errorPresenter:", array('exception' => $e));
						} catch (NAbortException $foo) {
							$request = $this->presenter->getLastCreatedRequest();
						}
					} else {
						$request = new NPresenterRequest(
							$this->errorPresenter,
							NPresenterRequest::FORWARD,
							array('exception' => $e)
						);
					}
					// continue

				} else { // default error handler
					if ($e instanceof NBadRequestException) {
						$code = $e->getCode();
					} else {
						$code = 500;
						NDebugger::log($e, NDebugger::ERROR);
					}
					require dirname(__FILE__) . '/templates/error.phtml';
					break;
				}
			}
		} while (1);

		$this->onShutdown($this, isset($e) ? $e : NULL);
	}