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Diffstat (limited to 'Zotlabs/Lib/Img_filesize.php')
| -rw-r--r-- | Zotlabs/Lib/Img_filesize.php | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/Zotlabs/Lib/Img_filesize.php b/Zotlabs/Lib/Img_filesize.php new file mode 100644 index 000000000..196697733 --- /dev/null +++ b/Zotlabs/Lib/Img_filesize.php @@ -0,0 +1,122 @@ +<?php + +namespace Zotlabs\Lib; + +class Img_filesize { + + private $url; + + function __construct($url) { + $this->url = $url; + } + + function getSize() { + $size = null; + + if(stripos($this->url,z_root() . '/photo') !== false) { + $size = self::getLocalFileSize($this->url); + } + if(! $size) { + $size = getRemoteFileSize($this->url); + } + + return $size; + } + + + static function getLocalFileSize($url) { + + $fname = basename($url); + $resolution = 0; + + if(strpos($fname,'.') !== false) + $fname = substr($fname,0,strpos($fname,'.')); + + if(substr($fname,-2,1) == '-') { + $resolution = intval(substr($fname,-1,1)); + $fname = substr($fname,0,-2); + } + + $r = q("SELECT filesize FROM photo WHERE resource_id = '%s' AND imgscale = %d LIMIT 1", + dbesc($fname), + intval($resolution) + ); + if($r) { + return $r[0]['filesize']; + } + return null; + } + +} + +/** + * Try to determine the size of a remote file by making an HTTP request for + * a byte range, or look for the content-length header in the response. + * The function aborts the transfer as soon as the size is found, or if no + * length headers are returned, it aborts the transfer. + * + * @return int|null null if size could not be determined, or length of content + */ +function getRemoteFileSize($url) +{ + $ch = curl_init($url); + + $headers = array( + 'Range: bytes=0-1', + 'Connection: close', + ); + + $in_headers = true; + $size = null; + + curl_setopt($ch, CURLOPT_HEADER, 1); + curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); + curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2450.0 Iron/46.0.2450.0'); + curl_setopt($ch, CURLOPT_HTTPHEADER, $headers); + curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0); + curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0); + curl_setopt($ch, CURLOPT_VERBOSE, 0); // set to 1 to debug + curl_setopt($ch, CURLOPT_STDERR, fopen('php://output', 'r')); + + curl_setopt($ch, CURLOPT_HEADERFUNCTION, function($curl, $line) use (&$in_headers, &$size) { + $length = strlen($line); + + if (trim($line) == '') { + $in_headers = false; + } + + list($header, $content) = explode(':', $line, 2); + $header = strtolower(trim($header)); + + if ($header == 'content-range') { + // found a content-range header + list($rng, $s) = explode('/', $content, 2); + $size = (int)$s; + return 0; // aborts transfer + } else if ($header == 'content-length' && 206 != curl_getinfo($curl, CURLINFO_HTTP_CODE)) { + // found content-length header and this is not a 206 Partial Content response (range response) + $size = (int)$content; + return 0; + } else { + // continue + return $length; + } + }); + + curl_setopt($ch, CURLOPT_WRITEFUNCTION, function($curl, $data) use ($in_headers) { + if (!$in_headers) { + // shouldn't be here unless we couldn't determine file size + // abort transfer + return 0; + } + + // write function is also called when reading headers + return strlen($data); + }); + + curl_exec($ch); + curl_getinfo($ch); + curl_close($ch); + + return $size; +}
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