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Diffstat (limited to 'lib/dokuwiki/inc/httputils.php')
| -rw-r--r-- | lib/dokuwiki/inc/httputils.php | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/lib/dokuwiki/inc/httputils.php b/lib/dokuwiki/inc/httputils.php deleted file mode 100644 index 324a730b9..000000000 --- a/lib/dokuwiki/inc/httputils.php +++ /dev/null @@ -1,199 +0,0 @@ -<?php -/** - * Utilities for handling HTTP related tasks - * - * @license GPL 2 (http://www.gnu.org/licenses/gpl.html) - * @author Andreas Gohr <andi@splitbrain.org> - */ - -define('HTTP_MULTIPART_BOUNDARY','D0KuW1K1B0uNDARY'); -define('HTTP_HEADER_LF',"\r\n"); -define('HTTP_CHUNK_SIZE',16*1024); - -/** - * Checks and sets HTTP headers for conditional HTTP requests - * - * @author Simon Willison <swillison@gmail.com> - * @link http://simon.incutio.com/archive/2003/04/23/conditionalGet - * @param timestamp $timestamp lastmodified time of the cache file - * @returns void or exits with previously header() commands executed - */ -function http_conditionalRequest($timestamp){ - // A PHP implementation of conditional get, see - // http://fishbowl.pastiche.org/archives/001132.html - $last_modified = substr(gmdate('r', $timestamp), 0, -5).'GMT'; - $etag = '"'.md5($last_modified).'"'; - // Send the headers - header("Last-Modified: $last_modified"); - header("ETag: $etag"); - // See if the client has provided the required headers - if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])){ - $if_modified_since = stripslashes($_SERVER['HTTP_IF_MODIFIED_SINCE']); - }else{ - $if_modified_since = false; - } - - if (isset($_SERVER['HTTP_IF_NONE_MATCH'])){ - $if_none_match = stripslashes($_SERVER['HTTP_IF_NONE_MATCH']); - }else{ - $if_none_match = false; - } - - if (!$if_modified_since && !$if_none_match){ - return; - } - - // At least one of the headers is there - check them - if ($if_none_match && $if_none_match != $etag) { - return; // etag is there but doesn't match - } - - if ($if_modified_since && $if_modified_since != $last_modified) { - return; // if-modified-since is there but doesn't match - } - - // Nothing has changed since their last request - serve a 304 and exit - header('HTTP/1.0 304 Not Modified'); - - // don't produce output, even if compression is on - @ob_end_clean(); - exit; -} - -/** - * Let the webserver send the given file vi x-sendfile method - * - * @author Chris Smith <chris.eureka@jalakai.co.uk> - * @returns void or exits with previously header() commands executed - */ -function http_sendfile($file) { - global $conf; - - //use x-sendfile header to pass the delivery to compatible webservers - if($conf['xsendfile'] == 1){ - header("X-LIGHTTPD-send-file: $file"); - ob_end_clean(); - exit; - }elseif($conf['xsendfile'] == 2){ - header("X-Sendfile: $file"); - ob_end_clean(); - exit; - }elseif($conf['xsendfile'] == 3){ - header("X-Accel-Redirect: $file"); - ob_end_clean(); - exit; - } - - return false; -} - -/** - * Send file contents supporting rangeRequests - * - * This function exits the running script - * - * @param ressource $fh - file handle for an already open file - * @param int $size - size of the whole file - * @param int $mime - MIME type of the file - * - * @author Andreas Gohr <andi@splitbrain.org> - */ -function http_rangeRequest($fh,$size,$mime){ - $ranges = array(); - $isrange = false; - - header('Accept-Ranges: bytes'); - - if(!isset($_SERVER['HTTP_RANGE'])){ - // no range requested - send the whole file - $ranges[] = array(0,$size,$size); - }else{ - $t = explode('=', $_SERVER['HTTP_RANGE']); - if (!$t[0]=='bytes') { - // we only understand byte ranges - send the whole file - $ranges[] = array(0,$size,$size); - }else{ - $isrange = true; - // handle multiple ranges - $r = explode(',',$t[1]); - foreach($r as $x){ - $p = explode('-', $x); - $start = (int)$p[0]; - $end = (int)$p[1]; - if (!$end) $end = $size - 1; - if ($start > $end || $start > $size || $end > $size){ - header('HTTP/1.1 416 Requested Range Not Satisfiable'); - print 'Bad Range Request!'; - exit; - } - $len = $end - $start + 1; - $ranges[] = array($start,$end,$len); - } - } - } - $parts = count($ranges); - - // now send the type and length headers - if(!$isrange){ - header("Content-Type: $mime",true); - }else{ - header('HTTP/1.1 206 Partial Content'); - if($parts == 1){ - header("Content-Type: $mime",true); - }else{ - header('Content-Type: multipart/byteranges; boundary='.HTTP_MULTIPART_BOUNDARY,true); - } - } - - // send all ranges - for($i=0; $i<$parts; $i++){ - list($start,$end,$len) = $ranges[$i]; - - // multipart or normal headers - if($parts > 1){ - echo HTTP_HEADER_LF.'--'.HTTP_MULTIPART_BOUNDARY.HTTP_HEADER_LF; - echo "Content-Type: $mime".HTTP_HEADER_LF; - echo "Content-Range: bytes $start-$end/$size".HTTP_HEADER_LF; - echo HTTP_HEADER_LF; - }else{ - header("Content-Length: $len"); - if($isrange){ - header("Content-Range: bytes $start-$end/$size"); - } - } - - // send file content - fseek($fh,$start); //seek to start of range - $chunk = ($len > HTTP_CHUNK_SIZE) ? HTTP_CHUNK_SIZE : $len; - while (!feof($fh) && $chunk > 0) { - @set_time_limit(30); // large files can take a lot of time - print fread($fh, $chunk); - flush(); - $len -= $chunk; - $chunk = ($len > HTTP_CHUNK_SIZE) ? HTTP_CHUNK_SIZE : $len; - } - } - if($parts > 1){ - echo HTTP_HEADER_LF.'--'.HTTP_MULTIPART_BOUNDARY.'--'.HTTP_HEADER_LF; - } - - // everything should be done here, exit - exit; -} - -/** - * Check for a gzipped version and create if necessary - * - * return true if there exists a gzip version of the uncompressed file - * (samepath/samefilename.sameext.gz) created after the uncompressed file - * - * @author Chris Smith <chris.eureka@jalakai.co.uk> - */ -function http_gzip_valid($uncompressed_file) { - $gzip = $uncompressed_file.'.gz'; - if (filemtime($gzip) < filemtime($uncompressed_file)) { // filemtime returns false (0) if file doesn't exist - return copy($uncompressed_file, 'compress.zlib://'.$gzip); - } - - return true; -} |