diff options
Diffstat (limited to 'system/core')
| -rw-r--r-- | system/core/Output.php | 95 |
1 files changed, 44 insertions, 51 deletions
diff --git a/system/core/Output.php b/system/core/Output.php index 6ddded22a..a3155fece 100644 --- a/system/core/Output.php +++ b/system/core/Output.php @@ -586,62 +586,59 @@ class CI_Output { return; } - if (flock($fp, LOCK_EX)) + if ( ! flock($fp, LOCK_EX)) { - // If output compression is enabled, compress the cache - // itself, so that we don't have to do that each time - // we're serving it - if ($this->_compress_output === TRUE) - { - $output = gzencode($output); + log_message('error', 'Unable to secure a file lock for file at: '.$cache_path); + fclose($fp); + return; + } - if ($this->get_header('content-type') === NULL) - { - $this->set_content_type($this->mime_type); - } + // If output compression is enabled, compress the cache + // itself, so that we don't have to do that each time + // we're serving it + if ($this->_compress_output === TRUE) + { + $output = gzencode($output); + + if ($this->get_header('content-type') === NULL) + { + $this->set_content_type($this->mime_type); } + } - $expire = time() + ($this->cache_expiration * 60); + $expire = time() + ($this->cache_expiration * 60); - // Put together our serialized info. - $cache_info = serialize(array( - 'expire' => $expire, - 'headers' => $this->headers - )); + // Put together our serialized info. + $cache_info = serialize(array( + 'expire' => $expire, + 'headers' => $this->headers + )); - $output = $cache_info.'ENDCI--->'.$output; + $output = $cache_info.'ENDCI--->'.$output; - for ($written = 0, $length = self::strlen($output); $written < $length; $written += $result) + for ($written = 0, $length = self::strlen($output); $written < $length; $written += $result) + { + if (($result = fwrite($fp, self::substr($output, $written))) === FALSE) { - if (($result = fwrite($fp, self::substr($output, $written))) === FALSE) - { - break; - } + break; } - - flock($fp, LOCK_UN); - } - else - { - log_message('error', 'Unable to secure a file lock for file at: '.$cache_path); - return; } + flock($fp, LOCK_UN); fclose($fp); - if (is_int($result)) - { - chmod($cache_path, 0640); - log_message('debug', 'Cache file written: '.$cache_path); - - // Send HTTP cache-control headers to browser to match file cache settings. - $this->set_cache_header($_SERVER['REQUEST_TIME'], $expire); - } - else + if ( ! is_int($result)) { @unlink($cache_path); log_message('error', 'Unable to write the complete cache content at: '.$cache_path); + return; } + + chmod($cache_path, 0640); + log_message('debug', 'Cache file written: '.$cache_path); + + // Send HTTP cache-control headers to browser to match file cache settings. + $this->set_cache_header($_SERVER['REQUEST_TIME'], $expire); } // -------------------------------------------------------------------- @@ -708,11 +705,9 @@ class CI_Output { log_message('debug', 'Cache file has expired. File deleted.'); return FALSE; } - else - { - // Or else send the HTTP cache control headers. - $this->set_cache_header($last_modified, $expire); - } + + // Send the HTTP cache control headers + $this->set_cache_header($last_modified, $expire); // Add headers from cache file. foreach ($cache_info['headers'] as $header) @@ -798,13 +793,11 @@ class CI_Output { $this->set_status_header(304); exit; } - else - { - header('Pragma: public'); - header('Cache-Control: max-age='.$max_age.', public'); - header('Expires: '.gmdate('D, d M Y H:i:s', $expiration).' GMT'); - header('Last-modified: '.gmdate('D, d M Y H:i:s', $last_modified).' GMT'); - } + + header('Pragma: public'); + header('Cache-Control: max-age='.$max_age.', public'); + header('Expires: '.gmdate('D, d M Y H:i:s', $expiration).' GMT'); + header('Last-modified: '.gmdate('D, d M Y H:i:s', $last_modified).' GMT'); } // -------------------------------------------------------------------- |