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#!/usr/bin/env php
<?php
namespace phinde;
require_once __DIR__ . '/../src/init.php';
$supportedCrawlTypes = array(
'text/html', 'application/xhtml+xml'
);
if ($argc < 2) {
echo "No URL given\n";
exit(1);
}
$es = new Elasticsearch($GLOBALS['phinde']['elasticsearch']);
$url = $argv[1];
if (!Helper::isUrlAllowed($url)) {
echo "Domain is not allowed; not crawling\n";
exit(2);
}
$req = new \HTTP_Request2($url);
//FIXME: send supported mime types in header
$res = $req->send();
if ($res->getStatus() !== 200) {
echo "Response code is not 200 but " . $res->getStatus() . ", stopping\n";
exit(3);
}
$mimetype = explode(';', $res->getHeader('content-type'))[0];
if (!in_array($mimetype, $supportedCrawlTypes)) {
echo "MIME type not supported for crawling: $mimetype\n";
exit(4);
}
//FIXME: mime type switch for cdata
$doc = new \DOMDocument();
//@ to hide parse warning messages in invalid html
@$doc->loadHTMLFile($url);
//FIXME: extract base url from html
$base = new \Net_URL2($url);
$xpath = new \DOMXPath($doc);
$links = $xpath->evaluate('//a');
//FIXME: link rel, img, video
$alreadySeen = array();
foreach ($links as $link) {
$linkTitle = $link->textContent;
$href = '';
foreach ($link->attributes as $attribute) {
if ($attribute->name == 'href') {
$href = $attribute->textContent;
}
}
if ($href == '' || $href{0} == '#') {
//link on this page
continue;
}
$linkUrlObj = $base->resolve($href);
$linkUrlObj->setFragment(false);
$linkUrl = (string) $linkUrlObj;
if (isset($alreadySeen[$linkUrl])) {
continue;
}
switch ($linkUrlObj->getScheme()) {
case 'http':
case 'https':
break;
default:
continue 2;
}
if ($es->isKnown($linkUrl)) {
continue;
}
//FIXME: check target type
//FIXME: check nofollow
//var_dump($linkTitle, $linkUrl);
$es->markQueued($linkUrl);
addToIndex($linkUrl, $linkTitle, $url);
if (Helper::isUrlAllowed($linkUrl)) {
addToCrawl($linkUrl);
}
$alreadySeen[$linkUrl] = true;
}
function addToIndex($linkUrl, $linkTitle, $sourceUrl)
{
echo "Queuing for indexing: $linkUrl\n";
$gmclient = new \GearmanClient();
$gmclient->addServer('127.0.0.1');
$gmclient->doBackground(
'phinde_index',
serialize(
array(
'url' => $linkUrl,
'title' => $linkTitle,
'source' => $sourceUrl
)
)
);
if ($gmclient->returnCode() != GEARMAN_SUCCESS) {
echo 'Error queueing URL indexing for '
. $linkUrl . "\n"
. 'Error code: ' . $gmclient->returnCode() . "\n";
exit(2);
}
}
function addToCrawl($linkUrl)
{
echo "Queuing for crawling: $linkUrl\n";
$gmclient = new \GearmanClient();
$gmclient->addServer('127.0.0.1');
$gmclient->doBackground(
'phinde_crawl',
serialize(
array(
'url' => $linkUrl
)
)
);
if ($gmclient->returnCode() != GEARMAN_SUCCESS) {
echo 'Error queueing URL crawling for '
. $linkUrl . "\n"
. 'Error code: ' . $gmclient->returnCode() . "\n";
exit(2);
}
}
?>
|
