function fetchUrl($url, $userdata = array())
{
require_once "HTTP/Request.php";
# logEvent("Fetching $url");
if (sizeof($userdata)) {
foreach ($userdata as $key => $val) {
$url = eregi_replace("\\[{$key}\\]", urlencode($val), $url);
}
}
if (!isset($GLOBALS['urlcache'])) {
$GLOBALS['urlcache'] = array();
}
# keep in memory cache in case we send a page to many emails
if (isset($GLOBALS['urlcache'][$url]) && is_array($GLOBALS['urlcache'][$url]) && time() - $GLOBALS['urlcache'][$url]['fetched'] < REMOTE_URL_REFETCH_TIMEOUT) {
# logEvent($url . " is cached in memory");
return $GLOBALS['urlcache'][$url]['content'];
}
$dbcache_lastmodified = getPageCacheLastModified($url);
$timeout = time() - $dbcache_lastmodified;
if ($timeout < REMOTE_URL_REFETCH_TIMEOUT) {
# logEvent($url.' was cached in database');
return getPageCache($url);
} else {
# logEvent($url.' is not cached in database '.$timeout.' '. $dbcache_lastmodified." ".time());
}
# add a small timeout, although the biggest timeout will exist in doing the DNS lookup,
# so it won't make too much of a difference
$request_parameters = array('timeout' => 10, 'allowRedirects' => 1, 'method' => 'HEAD');
$headreq =& new HTTP_Request($url, $request_parameters);
$headreq->addHeader('User-Agent', 'phplist v' . VERSION . ' (http://www.phplist.com)');
if (!PEAR::isError($headreq->sendRequest(false))) {
$code = $headreq->getResponseCode();
if ($code != 200) {
logEvent('Fetching ' . $url . ' failed, error code ' . $code);
return 0;
}
$header = $headreq->getResponseHeader();
## relying on the last modified header doesn't work for many pages
## use current time instead
## see http://mantis.phplist.com/view.php?id=7684
# $lastmodified = strtotime($header["last-modified"]);
$lastmodified = time();
$cache = getPageCache($url, $lastmodified);
if (!$cache) {
$request_parameters['method'] = 'GET';
$req =& new HTTP_Request($url, $request_parameters);
$req->addHeader('User-Agent', 'phplist v' . VERSION . ' (http://www.phplist.com)');
logEvent('Fetching ' . $url);
if (!PEAR::isError($req->sendRequest(true))) {
$content = $req->getResponseBody();
$content = addAbsoluteResources($content, $url);
logEvent('Fetching ' . $url . ' success');
setPageCache($url, $lastmodified, $content);
} else {
logEvent('Fetching ' . $url . ' failed');
return 0;
}
} else {
logEvent($url . ' was cached in database');
$content = $cache;
}
} else {
logEvent('Fetching ' . $url . ' failed');
return 0;
}
$GLOBALS['urlcache'][$url] = array('fetched' => time(), 'content' => $content);
return $content;
}
function fetchUrl($url, $userdata = array())
{
$content = '';
## fix the Editor replacing & with &
$url = str_ireplace('&', '&', $url);
# logEvent("Fetching $url");
if (count($userdata)) {
foreach ($userdata as $key => $val) {
if ($key != 'password') {
$url = utf8_encode(str_ireplace("[{$key}]", urlencode($val), utf8_decode($url)));
}
}
}
if (!isset($GLOBALS['urlcache'])) {
$GLOBALS['urlcache'] = array();
}
$url = expandUrl($url);
# print "<h1>Fetching ".$url."</h1>";
# keep in memory cache in case we send a page to many emails
if (isset($GLOBALS['urlcache'][$url]) && is_array($GLOBALS['urlcache'][$url]) && time() - $GLOBALS['urlcache'][$url]['fetched'] < REMOTE_URL_REFETCH_TIMEOUT) {
# logEvent($url . " is cached in memory");
if (VERBOSE && function_exists('output')) {
output('From memory cache: ' . $url);
}
return $GLOBALS['urlcache'][$url]['content'];
}
$dbcache_lastmodified = getPageCacheLastModified($url);
$timeout = time() - $dbcache_lastmodified;
if ($timeout < REMOTE_URL_REFETCH_TIMEOUT) {
# logEvent($url.' was cached in database');
if (VERBOSE && function_exists('output')) {
output('From database cache: ' . $url);
}
return getPageCache($url);
} else {
# logEvent($url.' is not cached in database '.$timeout.' '. $dbcache_lastmodified." ".time());
}
$request_parameters = array('timeout' => 600, 'allowRedirects' => 1, 'method' => 'HEAD');
$remote_charset = 'UTF-8';
## relying on the last modified header doesn't work for many pages
## use current time instead
## see http://mantis.phplist.com/view.php?id=7684
# $lastmodified = strtotime($header["last-modified"]);
$lastmodified = time();
$cache = getPageCache($url, $lastmodified);
if (!$cache) {
if (function_exists('curl_init')) {
$content = fetchUrlCurl($url, $request_parameters);
} elseif (0 && $GLOBALS['has_pear_http_request'] == 2) {
## @#TODO, make it work with Request2
@(require_once 'HTTP/Request2.php');
} elseif ($GLOBALS['has_pear_http_request']) {
@(require_once 'HTTP/Request.php');
$content = fetchUrlPear($url, $request_parameters);
} else {
return false;
}
} else {
if (VERBOSE) {
logEvent($url . ' was cached in database');
}
$content = $cache;
}
if (!empty($content)) {
$content = addAbsoluteResources($content, $url);
logEvent('Fetching ' . $url . ' success');
setPageCache($url, $lastmodified, $content);
$GLOBALS['urlcache'][$url] = array('fetched' => time(), 'content' => $content);
}
return $content;
}