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Response::sendStream WIP

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This commit is contained in:
Qiang Xue
2013-06-10 08:48:30 -04:00
parent 9cce66c794
commit 22053cdc60
1 changed files with 106 additions and 30 deletions
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136
framework/yii/web/Response.php
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@@ -352,6 +352,95 @@ class Response extends \yii\base\Response
}
}
public function sendStream($handle, $options = array())
{
fseek($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'));
}
$this->setStatusCode(206);
$headers->set('Content-Range', "bytes $contentStart-$contentEnd/$fileSize");
} else {
$this->setStatusCode(200);
}
if (isset($options['mimeType'])) {
$headers->set('Content-Type', $options['mimeType']);
}
$length = $contentEnd - $contentStart + 1;
$disposition = empty($options['disposition']) ? 'attachment' : $options['disposition'];
if (!isset($options['saveName'])) {
$options['saveName'] = 'data';
}
$headers->set('Pragma', 'public')
->set('Expires', '0')
->set('Cache-Control', 'must-revalidate, post-check=0, pre-check=0')
->set('Content-Disposition', "$disposition; filename=\"{$options['saveName']}\"")
->set('Content-Length', $length)
->set('Content-Transfer-Encoding', 'binary');
if (isset($options['headers'])) {
foreach ($options['headers'] as $header => $value) {
$headers->add($header, $value);
}
}
fseek($handle, $contentStart);
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 - $fPointer + 1;
}
echo fread($handle, $chunkSize);
flush(); // Free up memory. Otherwise large files will trigger PHP's memory limit.
}
fclose($handle);
}
/**
* Sends existing file to a browser as a download using x-sendfile.
*
@@ -404,52 +493,39 @@ class Response extends \yii\base\Response
* @param string $filePath file name with full path
* @param array $options additional options:
*
* - saveName: file name shown to the user, if not set real file name will be used
* - mimeType: mime type of the file, if not set it will be guessed automatically based on the file name,
* if set to null no content-type header will be sent.
* - xHeader: appropriate x-sendfile header, defaults to "X-Sendfile"
* - terminate: whether to terminate the current application after calling this method, defaults to true
* - forceDownload: specifies whether the file will be downloaded or shown inline, defaults to true
* - addHeaders: an array of additional http headers in header-value pairs
* - saveName: file name shown to the user. If not set, the name will be determined from `$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.
*/
public function xSendFile($filePath, $options = array())
{
if (!isset($options['forceDownload']) || $options['forceDownload']) {
$disposition = 'attachment';
} else {
$disposition = 'inline';
}
$headers = $this->getHeaders();
if (!isset($options['saveName'])) {
$options['saveName'] = basename($filePath);
}
$headers->set(empty($options['xHeader']) ? 'X-Sendfile' : $options['xHeader'], $filePath);
if (!isset($options['mimeType'])) {
if (($options['mimeType'] = FileHelper::getMimeTypeByExtension($filePath)) === null) {
$options['mimeType'] = 'text/plain';
}
}
$headers->set('Content-Type', $options['mimeType']);
if (!isset($options['xHeader'])) {
$options['xHeader'] = 'X-Sendfile';
}
$headers = $this->getHeaders();
if ($options['mimeType'] !== null) {
$headers->set('Content-Type', $options['mimeType']);
$disposition = empty($options['disposition']) ? 'attachment' : $options['disposition'];
if (!isset($options['saveName'])) {
$options['saveName'] = basename($filePath);
}
$headers->set('Content-Disposition', "$disposition; filename=\"{$options['saveName']}\"");
if (isset($options['addHeaders'])) {
foreach ($options['addHeaders'] as $header => $value) {
$headers->set($header, $value);
if (isset($options['headers'])) {
foreach ($options['headers'] as $header => $value) {
$headers->add($header, $value);
}
}
$headers->set(trim($options['xHeader']), $filePath);
if (!isset($options['terminate']) || $options['terminate']) {
Yii::$app->end();
}
$this->send();
}
/**