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Fixes issue #276: Enable Response::sendFile() to operate on resources

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This commit is contained in:
Qiang Xue
2013-06-10 16:37:35 -04:00
parent 9806563f7f
commit f14774dfb6
5 changed files with 152 additions and 191 deletions
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7
framework/yii/base/HttpException.php
View File

@@ -7,8 +7,6 @@
namespace yii\base;
use yii\web\Response;
/**
* HttpException represents an exception caused by an improper request of the end-user.
*
@@ -44,8 +42,9 @@ class HttpException extends UserException
*/
public function getName()
{
if (isset(Response::$httpStatuses[$this->statusCode])) {
return Response::$httpStatuses[$this->statusCode];
// use absolute namespaced class here because PHP will generate a mysterious error otherwise
if (isset(\yii\web\Response::$httpStatuses[$this->statusCode])) {
return \yii\web\Response::$httpStatuses[$this->statusCode];
} else {
return 'Error';
}

16
framework/yii/web/HeaderCollection.php
View File

@@ -103,6 +103,22 @@ class HeaderCollection extends Object implements \IteratorAggregate, \ArrayAcces
return $this;
}
/**
* Adds a new header only if it does not exist yet.
* If there is already a header with the same name, the new one will be ignored.
* @param string $name the name of the header
* @param string $value the value of the header
* @return HeaderCollection the collection object itself
*/
public function addDefault($name, $value)
{
$name = strtolower($name);
if (empty($this->_headers[$name])) {
$this->_headers[$name][] = $value;
}
return $this;
}
/**
* Returns a value indicating whether the named header exists.
* @param string $name the name of the header

288
framework/yii/web/Response.php
View File

@@ -275,141 +275,68 @@ class Response extends \yii\base\Response
}
/**
* Sends a file to user.
* @param string $fileName file name
* @param string $content content to be set.
* @param string $mimeType mime type of the content. If null, it will be guessed automatically based on the given file name.
* @param boolean $terminate whether to terminate the current application after calling this method
* @throws HttpException when range request is not satisfiable.
* Sends a file to the browser.
* @param string $filePath the path of the file to be sent.
* @param string $mimeType the MIME type of the content. If null, it will be guessed based on `$filePath`
* @param string $attachmentName the file name shown to the user. If null, it will be determined from `$filePath`.
*/
public function sendFile($fileName, $content, $mimeType = null, $terminate = true)
public function sendFile($filePath, $mimeType = null, $attachmentName = null)
{
if ($mimeType === null && (($mimeType = FileHelper::getMimeTypeByExtension($fileName)) === null)) {
if ($mimeType === null && ($mimeType = FileHelper::getMimeTypeByExtension($filePath)) === null) {
$mimeType = 'application/octet-stream';
}
$fileSize = StringHelper::strlen($content);
$contentStart = 0;
$contentEnd = $fileSize - 1;
$headers = $this->getHeaders();
// tell the client that we accept range requests
$headers->set('Accept-Ranges', 'bytes');
if (isset($_SERVER['HTTP_RANGE'])) {
// client sent us a multibyte range, can not hold this one for now
if (strpos($_SERVER['HTTP_RANGE'], ',') !== false) {
$headers->set('Content-Range', "bytes $contentStart-$contentEnd/$fileSize");
throw new HttpException(416, 'Requested Range Not Satisfiable');
}
$range = str_replace('bytes=', '', $_SERVER['HTTP_RANGE']);
// range requests starts from "-", so it means that data must be dumped the end point.
if ($range[0] === '-') {
$contentStart = $fileSize - substr($range, 1);
} else {
$range = explode('-', $range);
$contentStart = $range[0];
// check if the last-byte-pos presents in header
if ((isset($range[1]) && is_numeric($range[1]))) {
$contentEnd = $range[1];
}
}
/* Check the range and make sure it's treated according to the specs.
* http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
*/
// End bytes can not be larger than $end.
$contentEnd = ($contentEnd > $fileSize) ? $fileSize - 1 : $contentEnd;
// Validate the requested range and return an error if it's not correct.
$wrongContentStart = ($contentStart > $contentEnd || $contentStart > $fileSize - 1 || $contentStart < 0);
if ($wrongContentStart) {
$headers->set('Content-Range', "bytes $contentStart-$contentEnd/$fileSize");
throw new HttpException(416, 'Requested Range Not Satisfiable');
}
$this->setStatusCode(206);
$headers->set('Content-Range', "bytes $contentStart-$contentEnd/$fileSize");
} else {
$this->setStatusCode(200);
}
$length = $contentEnd - $contentStart + 1; // Calculate new content length
$headers->set('Pragma', 'public')
->set('Expires', '0')
->set('Cache-Control', 'must-revalidate, post-check=0, pre-check=0')
->set('Content-Type', $mimeType)
->set('Content-Length', $length)
->set('Content-Disposition', "attachment; filename=\"$fileName\"")
->set('Content-Transfer-Encoding', 'binary');
$content = StringHelper::substr($content, $contentStart, $length);
if ($terminate) {
// clean up the application first because the file downloading could take long time
// which may cause timeout of some resources (such as DB connection)
ob_start();
Yii::$app->end(0, false);
ob_end_clean();
$this->content = $content;
exit(0);
} else {
$this->content = $content;
if ($attachmentName === null) {
$attachmentName = basename($filePath);
}
$handle = fopen($filePath, 'rb');
$this->sendStreamAsFile($handle, $mimeType, $attachmentName);
}
public function sendStream($handle, $options = array())
/**
* Sends the specified content as a file to the browser.
* @param string $content the content to be sent. The existing [[content]] will be discarded.
* @param string $mimeType the MIME type of the content.
* @param string $attachmentName the file name shown to the user.
*/
public function sendContentAsFile($content, $mimeType = 'application/octet-stream', $attachmentName = 'file')
{
$this->getHeaders()
->addDefault('Pragma', 'public')
->addDefault('Accept-Ranges', 'bytes')
->addDefault('Expires', '0')
->addDefault('Content-Type', $mimeType)
->addDefault('Cache-Control', 'must-revalidate, post-check=0, pre-check=0')
->addDefault('Content-Transfer-Encoding', 'binary')
->addDefault('Content-Length', StringHelper::strlen($content))
->addDefault('Content-Disposition', "attachment; filename=\"$attachmentName\"");
$this->content = $content;
$this->send();
}
/**
* Sends the specified stream as a file to the browser.
* @param resource $handle the handle of the stream to be sent.
* @param string $mimeType the MIME type of the stream content.
* @param string $attachmentName the file name shown to the user.
* @throws HttpException if the requested range cannot be satisfied.
*/
public function sendStreamAsFile($handle, $mimeType = 'application/octet-stream', $attachmentName = 'file')
{
$headers = $this->getHeaders();
fseek($handle, 0, SEEK_END);
$fileSize = ftell($handle);
$contentStart = 0;
$contentEnd = $fileSize - 1;
$headers = $this->getHeaders();
if (isset($_SERVER['HTTP_RANGE'])) {
// client sent us a multibyte range, can not hold this one for now
if (strpos($_SERVER['HTTP_RANGE'], ',') !== false) {
$headers->set('Content-Range', "bytes $contentStart-$contentEnd/$fileSize");
throw new HttpException(416, Yii::t('yii', 'Requested range not satisfiable'));
}
$range = str_replace('bytes=', '', $_SERVER['HTTP_RANGE']);
// range requests starts from "-", so it means that data must be dumped the end point.
if ($range[0] === '-') {
$contentStart = $fileSize - substr($range, 1);
} else {
$range = explode('-', $range);
$contentStart = $range[0];
// check if the last-byte-pos presents in header
if ((isset($range[1]) && is_numeric($range[1]))) {
$contentEnd = $range[1];
}
}
/* Check the range and make sure it's treated according to the specs.
* http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
*/
// End bytes can not be larger than $end.
$contentEnd = $contentEnd > $fileSize ? $fileSize - 1 : $contentEnd;
// Validate the requested range and return an error if it's not correct.
if ($contentStart > $contentEnd || $contentStart > $fileSize - 1 || $contentStart < 0) {
$headers->set('Content-Range', "bytes $contentStart-$contentEnd/$fileSize");
throw new HttpException(416, Yii::t('yii', 'Requested range not satisfiable'));
}
$range = $this->getHttpRange($fileSize);
if ($range === false) {
$headers->set('Content-Range', "bytes */$fileSize");
throw new HttpException(416, Yii::t('yii', 'Requested range not satisfiable'));
}
list($begin, $end) = $range;
if ($begin !=0 || $end != $fileSize - 1) {
$this->setStatusCode(206);
$headers->set('Content-Range', "bytes $contentStart-$contentEnd/$fileSize");
$headers->set('Content-Range', "bytes $begin-$end/$fileSize");
} else {
$this->setStatusCode(200);
}
@@ -418,41 +345,65 @@ class Response extends \yii\base\Response
$headers->set('Content-Type', $options['mimeType']);
}
$length = $contentEnd - $contentStart + 1;
$disposition = empty($options['disposition']) ? 'attachment' : $options['disposition'];
if (!isset($options['saveName'])) {
$options['saveName'] = 'data';
}
$length = $end - $begin + 1;
$headers->set('Pragma', 'public')
->set('Expires', '0')
->set('Cache-Control', 'must-revalidate, post-check=0, pre-check=0')
->set('Content-Disposition', "$disposition; filename=\"{$options['saveName']}\"")
->set('Content-Length', $length)
->set('Content-Transfer-Encoding', 'binary');
$headers->addDefault('Pragma', 'public')
->addDefault('Accept-Ranges', 'bytes')
->addDefault('Expires', '0')
->addDefault('Content-Type', $mimeType)
->addDefault('Cache-Control', 'must-revalidate, post-check=0, pre-check=0')
->addDefault('Content-Transfer-Encoding', 'binary')
->addDefault('Content-Length', $length)
->addDefault('Content-Disposition', "attachment; filename=\"$attachmentName\"");
if (isset($options['headers'])) {
foreach ($options['headers'] as $header => $value) {
$headers->add($header, $value);
}
}
fseek($handle, $contentStart);
$this->send();
fseek($handle, $begin);
set_time_limit(0); // Reset time limit for big files
$chunkSize = 8 * 1024 * 1024; // 8MB per chunk
while (!feof($handle) && ($fPointer = ftell($handle)) <= $contentEnd) {
if ($fPointer + $chunkSize > $contentEnd) {
$chunkSize = $contentEnd - $fPointer + 1;
while (!feof($handle) && ($pos = ftell($handle)) <= $end) {
if ($pos + $chunkSize > $end) {
$chunkSize = $end - $pos + 1;
}
echo fread($handle, $chunkSize);
flush(); // Free up memory. Otherwise large files will trigger PHP's memory limit.
}
fclose($handle);
}
/**
* Determines the HTTP range given in the request.
* @param integer $fileSize the size of the file that will be used to validate the requested HTTP range.
* @return array|boolean the range (begin, end), or false if the range request is invalid.
*/
protected function getHttpRange($fileSize)
{
if (!isset($_SERVER['HTTP_RANGE']) || $_SERVER['HTTP_RANGE'] === '-') {
return array(0, $fileSize - 1);
}
if (!preg_match('/^bytes=(\d*)-(\d*)$/', $_SERVER['HTTP_RANGE'], $matches)) {
return false;
}
if ($matches[1] === '') {
$start = $fileSize - $matches[2];
$end = $fileSize - 1;
} elseif ($matches[2] !== '') {
$start = $matches[1];
$end = $matches[2];
if ($end >= $fileSize) {
$end = $fileSize - 1;
}
} else {
$start = $matches[1];
$end = $fileSize - 1;
}
if ($start < 0 || $start > $end) {
return false;
} else {
return array($start, $end);
}
}
/**
* Sends existing file to a browser as a download using x-sendfile.
*
@@ -496,46 +447,27 @@ class Response extends \yii\base\Response
* **Example**
*
* ~~~
* Yii::app()->request->xSendFile('/home/user/Pictures/picture1.jpg', array(
* 'saveName' => 'image1.jpg',
* 'mimeType' => 'image/jpeg',
* 'terminate' => false,
* ));
* Yii::app()->request->xSendFile('/home/user/Pictures/picture1.jpg');
* ~~~
*
* @param string $filePath file name with full path
* @param array $options additional options:
*
* - saveName: file name shown to the user. If not set, the name will be determined from `$filePath`.
* - mimeType: MIME type of the file. If not set, it will be determined based on the file name.
* - xHeader: appropriate x-sendfile header, defaults to "X-Sendfile".
* - disposition: either "attachment" or "inline". This specifies whether the file will be downloaded
* or shown inline. Defaults to "attachment".
* - headers: an array of additional http headers in name-value pairs.
* @param string $mimeType the MIME type of the file. If null, it will be determined based on `$filePath`.
* @param string $attachmentName file name shown to the user. If null, it will be determined from `$filePath`.
* @param string $xHeader the name of the x-sendfile header.
*/
public function xSendFile($filePath, $options = array())
public function xSendFile($filePath, $mimeType = null, $attachmentName = null, $xHeader = 'X-Sendfile')
{
$headers = $this->getHeaders();
$headers->set(empty($options['xHeader']) ? 'X-Sendfile' : $options['xHeader'], $filePath);
if (!isset($options['mimeType'])) {
if (($options['mimeType'] = FileHelper::getMimeTypeByExtension($filePath)) === null) {
$options['mimeType'] = 'text/plain';
}
if ($mimeType === null && ($mimeType = FileHelper::getMimeTypeByExtension($filePath)) === null) {
$mimeType = 'application/octet-stream';
}
$headers->set('Content-Type', $options['mimeType']);
$disposition = empty($options['disposition']) ? 'attachment' : $options['disposition'];
if (!isset($options['saveName'])) {
$options['saveName'] = basename($filePath);
if ($attachmentName === null) {
$attachmentName = basename($filePath);
}
$headers->set('Content-Disposition', "$disposition; filename=\"{$options['saveName']}\"");
if (isset($options['headers'])) {
foreach ($options['headers'] as $header => $value) {
$headers->add($header, $value);
}
}
$this->getHeaders()
->addDefault($xHeader, $filePath)
->addDefault('Content-Type', $mimeType)
->addDefault('Content-Disposition', "attachment; filename=\"$attachmentName\"");
$this->send();
}