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Refactor php streamer

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This commit is contained in:
Phan An 2018-08-30 09:45:48 +07:00
parent 90ed58cb91
commit 2349a66a31
1 changed files with 32 additions and 40 deletions
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72
app/Services/Streamers/PHPStreamer.php
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@ -10,29 +10,12 @@ class PHPStreamer extends Streamer implements DirectStreamerInterface
*/
public function stream(): void
{
// Get the 'Range' header if one was sent
if (array_key_exists('HTTP_RANGE', $_SERVER)) {
// IIS/Some Apache versions
$range = $_SERVER['HTTP_RANGE'];
} elseif (function_exists('apache_request_headers') && $apache = apache_request_headers()) {
// Try Apache again
$headers = [];
foreach ($apache as $header => $val) {
$headers[strtolower($header)] = $val;
}
$range = array_key_exists('range', $headers) ? $headers['range'] : false;
} else {
// We can't get the header/there isn't one set
$range = false;
}
// Get the data range requested (if any)
$range = $this->getRange();
$start = null;
$end = null;
$fileSize = filesize($this->song->path);
if ($range) {
$partial = true;
list($param, $range) = explode('=', $range);
// Bad request - range unit is not 'bytes'
@ -44,34 +27,25 @@ class PHPStreamer extends Streamer implements DirectStreamerInterface
// Bad request - 'bytes' parameter is not valid
abort_unless(count($range) === 2, 400);
if ($range[0] === '') {
$start = (int) $range[0];
if (!$range[0]) {
// First number missing, return last $range[1] bytes
$start = 0;
$end = (int) $range[1];
} elseif ($range[1] === '') {
if ($range[0] === 0) {
$start = 0;
$end = $fileSize - 1;
$partial = false;
} else {
// Second number missing, return from byte $range[0] to end
$start = (int) $range[0];
$end = $fileSize - 1;
}
} elseif (!$range[1]) {
$end = $fileSize - 1;
} else {
// Both numbers present, return specific range
$start = (int) $range[0];
$end = (int) $range[1];
if ($end >= $fileSize || (!$start && (!$end || $end === ($fileSize - 1)))) {
// Invalid range/whole file specified, return whole file
$partial = false;
if ($end >= $fileSize) {
$end = $fileSize - 1;
}
}
$partial = $start > 0 || $end < $fileSize - 1;
$length = $end - $start + 1;
} else {
// No range requested
$length = filesize($this->song->path);
$partial = false;
}
@ -79,8 +53,8 @@ class PHPStreamer extends Streamer implements DirectStreamerInterface
// Send standard headers
header("Content-Type: {$this->contentType}");
header("Content-Length: $length");
header('Last-Modified: '.gmdate('D, d M Y H:i:s T', filemtime($this->song->path)));
header('Content-Disposition: attachment; filename="'.basename($this->song->path).'"');
header('Last-Modified: ' . gmdate('D, d M Y H:i:s T', filemtime($this->song->path)));
header('Content-Disposition: attachment; filename="' . basename($this->song->path) . '"');
header('Accept-Ranges: bytes');
// if requested, send extra headers and part of file...
@ -104,10 +78,28 @@ class PHPStreamer extends Streamer implements DirectStreamerInterface
fclose($fp);
} else {
// ...otherwise just send the whole file
readfile($this->song->path);
}
exit;
}
private function getRange():? string
{
if (getenv('HTTP_RANGE')) {
// IIS/Some Apache versions
return (string) getenv('HTTP_RANGE');
}
if (function_exists('apache_request_headers') && $apache = apache_request_headers()) {
// Try Apache again
foreach ($apache as $header => $val) {
if (strtolower($header) === 'range') {
return (string) $val;
}
}
}
return null;
}
}