0,0 → 1,204 |
<?php |
/** |
* Smarty plugin |
* |
* @package Smarty |
* @subpackage PluginsFunction |
*/ |
/** |
* Smarty {fetch} plugin |
* Type: function |
* Name: fetch |
* Purpose: fetch file, web or ftp data and display results |
* |
* @link http://www.smarty.net/manual/en/language.function.fetch.php {fetch} |
* (Smarty online manual) |
* @author Monte Ohrt <monte at ohrt dot com> |
* |
* @param array $params parameters |
* @param Smarty_Internal_Template $template template object |
* |
* @throws SmartyException |
* @return string|null if the assign parameter is passed, Smarty assigns the result to a template variable |
*/ |
function smarty_function_fetch($params, $template) |
{ |
if (empty($params[ 'file' ])) { |
trigger_error('[plugin] fetch parameter \'file\' cannot be empty', E_USER_NOTICE); |
return; |
} |
// strip file protocol |
if (stripos($params[ 'file' ], 'file://') === 0) { |
$params[ 'file' ] = substr($params[ 'file' ], 7); |
} |
$protocol = strpos($params[ 'file' ], '://'); |
if ($protocol !== false) { |
$protocol = strtolower(substr($params[ 'file' ], 0, $protocol)); |
} |
if (isset($template->smarty->security_policy)) { |
if ($protocol) { |
// remote resource (or php stream, …) |
if (!$template->smarty->security_policy->isTrustedUri($params[ 'file' ])) { |
return; |
} |
} else { |
// local file |
if (!$template->smarty->security_policy->isTrustedResourceDir($params[ 'file' ])) { |
return; |
} |
} |
} |
$content = ''; |
if ($protocol === 'http') { |
// http fetch |
if ($uri_parts = parse_url($params[ 'file' ])) { |
// set defaults |
$host = $server_name = $uri_parts[ 'host' ]; |
$timeout = 30; |
$accept = 'image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, */*'; |
$agent = 'Smarty Template Engine ' . Smarty::SMARTY_VERSION; |
$referer = ''; |
$uri = !empty($uri_parts[ 'path' ]) ? $uri_parts[ 'path' ] : '/'; |
$uri .= !empty($uri_parts[ 'query' ]) ? '?' . $uri_parts[ 'query' ] : ''; |
$_is_proxy = false; |
if (empty($uri_parts[ 'port' ])) { |
$port = 80; |
} else { |
$port = $uri_parts[ 'port' ]; |
} |
if (!empty($uri_parts[ 'user' ])) { |
$user = $uri_parts[ 'user' ]; |
} |
if (!empty($uri_parts[ 'pass' ])) { |
$pass = $uri_parts[ 'pass' ]; |
} |
// loop through parameters, setup headers |
foreach ($params as $param_key => $param_value) { |
switch ($param_key) { |
case 'file': |
case 'assign': |
case 'assign_headers': |
break; |
case 'user': |
if (!empty($param_value)) { |
$user = $param_value; |
} |
break; |
case 'pass': |
if (!empty($param_value)) { |
$pass = $param_value; |
} |
break; |
case 'accept': |
if (!empty($param_value)) { |
$accept = $param_value; |
} |
break; |
case 'header': |
if (!empty($param_value)) { |
if (!preg_match('![\w\d-]+: .+!', $param_value)) { |
trigger_error("[plugin] invalid header format '{$param_value}'", E_USER_NOTICE); |
return; |
} else { |
$extra_headers[] = $param_value; |
} |
} |
break; |
case 'proxy_host': |
if (!empty($param_value)) { |
$proxy_host = $param_value; |
} |
break; |
case 'proxy_port': |
if (!preg_match('!\D!', $param_value)) { |
$proxy_port = (int)$param_value; |
} else { |
trigger_error("[plugin] invalid value for attribute '{$param_key }'", E_USER_NOTICE); |
return; |
} |
break; |
case 'agent': |
if (!empty($param_value)) { |
$agent = $param_value; |
} |
break; |
case 'referer': |
if (!empty($param_value)) { |
$referer = $param_value; |
} |
break; |
case 'timeout': |
if (!preg_match('!\D!', $param_value)) { |
$timeout = (int)$param_value; |
} else { |
trigger_error("[plugin] invalid value for attribute '{$param_key}'", E_USER_NOTICE); |
return; |
} |
break; |
default: |
trigger_error("[plugin] unrecognized attribute '{$param_key}'", E_USER_NOTICE); |
return; |
} |
} |
if (!empty($proxy_host) && !empty($proxy_port)) { |
$_is_proxy = true; |
$fp = fsockopen($proxy_host, $proxy_port, $errno, $errstr, $timeout); |
} else { |
$fp = fsockopen($server_name, $port, $errno, $errstr, $timeout); |
} |
if (!$fp) { |
trigger_error("[plugin] unable to fetch: $errstr ($errno)", E_USER_NOTICE); |
return; |
} else { |
if ($_is_proxy) { |
fputs($fp, 'GET ' . $params[ 'file' ] . " HTTP/1.0\r\n"); |
} else { |
fputs($fp, "GET $uri HTTP/1.0\r\n"); |
} |
if (!empty($host)) { |
fputs($fp, "Host: $host\r\n"); |
} |
if (!empty($accept)) { |
fputs($fp, "Accept: $accept\r\n"); |
} |
if (!empty($agent)) { |
fputs($fp, "User-Agent: $agent\r\n"); |
} |
if (!empty($referer)) { |
fputs($fp, "Referer: $referer\r\n"); |
} |
if (isset($extra_headers) && is_array($extra_headers)) { |
foreach ($extra_headers as $curr_header) { |
fputs($fp, $curr_header . "\r\n"); |
} |
} |
if (!empty($user) && !empty($pass)) { |
fputs($fp, 'Authorization: BASIC ' . base64_encode("$user:$pass") . "\r\n"); |
} |
fputs($fp, "\r\n"); |
while (!feof($fp)) { |
$content .= fgets($fp, 4096); |
} |
fclose($fp); |
$csplit = preg_split("!\r\n\r\n!", $content, 2); |
$content = $csplit[ 1 ]; |
if (!empty($params[ 'assign_headers' ])) { |
$template->assign($params[ 'assign_headers' ], preg_split("!\r\n!", $csplit[ 0 ])); |
} |
} |
} else { |
trigger_error("[plugin fetch] unable to parse URL, check syntax", E_USER_NOTICE); |
return; |
} |
} else { |
$content = @file_get_contents($params[ 'file' ]); |
if ($content === false) { |
throw new SmartyException("{fetch} cannot read resource '" . $params[ 'file' ] . "'"); |
} |
} |
if (!empty($params[ 'assign' ])) { |
$template->assign($params[ 'assign' ], $content); |
} else { |
return $content; |
} |
} |