friendica-addons/retriever/retriever.php
2023-05-27 15:51:01 +02:00

864 lines
42 KiB
PHP

<?php
/**
* Name: Retriever
* Description: Follow the permalink of RSS/Atom feed items and replace the summary with the full content.
* Version: 1.0
* Author: Matthew Exon <http://mat.exon.name>
*/
use Friendica\Core\Addon;
use Friendica\Core\Config;
use Friendica\Core\PConfig;
use Friendica\Core\Logger;
use Friendica\Core\Renderer;
use Friendica\Core\System;
use Friendica\Content\Text\HTML;
use Friendica\Content\Text\BBCode;
use Friendica\Model\Photo;
use Friendica\Object\Image;
use Friendica\Util\Network;
use Friendica\Core\L10n;
use Friendica\Database\DBA;
use Friendica\Model\ItemURI;
use Friendica\Model\Item;
function retriever_install() {
Addon::registerHook('plugin_settings', 'addon/retriever/retriever.php', 'retriever_plugin_settings');
Addon::registerHook('plugin_settings_post', 'addon/retriever/retriever.php', 'retriever_plugin_settings_post');
Addon::registerHook('post_remote', 'addon/retriever/retriever.php', 'retriever_post_remote_hook');
Addon::registerHook('contact_photo_menu', 'addon/retriever/retriever.php', 'retriever_contact_photo_menu');
Addon::registerHook('cron', 'addon/retriever/retriever.php', 'retriever_cron');
if (Config::get('retriever', 'dbversion') == '0.10') {
q('ALTER TABLE `retriever_resource` MODIFY COLUMN `type` char(255) NULL DEFAULT NULL');
q('ALTER TABLE `retriever_resource` MODIFY COLUMN `data` mediumblob NULL DEFAULT NULL');
q('ALTER TABLE `retriever_rule` MODIFY COLUMN `data` mediumtext NULL DEFAULT NULL');
Config::set('retriever', 'dbversion', '0.11');
}
if (Config::get('retriever', 'dbversion') == '0.11') {
q('ALTER TABLE `retriever_resource` ADD INDEX `url` (`url`)');
q('ALTER TABLE `retriever_resource` ADD INDEX `completed` (`completed`)');
q('ALTER TABLE `retriever_item` ADD INDEX `finished` (`finished`)');
q('ALTER TABLE `retriever_item` ADD INDEX `item-uid` (`item-uid`)');
Config::set('retriever', 'dbversion', '0.12');
}
if (Config::get('retriever', 'dbversion') == '0.12') {
q("ALTER TABLE `retriever_resource` ADD COLUMN `contact-id` int(10) unsigned NOT NULL DEFAULT '0' AFTER `id`");
q("ALTER TABLE `retriever_resource` ADD COLUMN `item-uid` int(10) unsigned NOT NULL DEFAULT '0' AFTER `id`");
Config::set('retriever', 'dbversion', '0.13');
}
if (Config::get('retriever', 'dbversion') == '0.13') {
Config::set('retriever', 'downloads_per_cron', '100');
}
if (Config::get('retriever', 'dbversion') != '0.14') {
$schema = file_get_contents(dirname(__file__).'/database.sql');
$arr = explode(';', $schema);
foreach ($arr as $a) {
if (!DBA::e($a)) {
Logger::warning('Unable to create database table: ' . DBA::errorMessage());
return;
}
}
Config::set('retriever', 'downloads_per_cron', '100');
Config::set('retriever', 'dbversion', '0.14');
}
}
function retriever_uninstall() {
Addon::unregisterHook('plugin_settings', 'addon/retriever/retriever.php', 'retriever_plugin_settings');
Addon::unregisterHook('plugin_settings_post', 'addon/retriever/retriever.php', 'retriever_plugin_settings_post');
Addon::unregisterHook('post_remote', 'addon/retriever/retriever.php', 'retriever_post_remote_hook');
Addon::unregisterHook('plugin_settings', 'addon/retriever/retriever.php', 'retriever_plugin_settings');
Addon::unregisterHook('plugin_settings_post', 'addon/retriever/retriever.php', 'retriever_plugin_settings_post');
Addon::unregisterHook('contact_photo_menu', 'addon/retriever/retriever.php', 'retriever_contact_photo_menu');
Addon::unregisterHook('cron', 'addon/retriever/retriever.php', 'retriever_cron');
}
function retriever_module() {}
function retriever_addon_admin(&$a, &$o) {
$downloads_per_cron = Config::get('retriever', 'downloads_per_cron');
$template = Renderer::getMarkupTemplate('admin.tpl', 'addon/retriever/');
$config = ['downloads_per_cron',
L10n::t('Downloads per Cron'),
$downloads_per_cron,
L10n::t('Maximum number of downloads to attempt during each run of the cron job.')];
$o .= Renderer::replaceMacros($template, [
'$downloads_per_cron' => $config,
'$submit' => L10n::t('Save Settings')]);
}
function retriever_addon_admin_post ($a) {
if (!empty($_POST['downloads_per_cron'])) {
Config::set('retriever', 'downloads_per_cron', $_POST['downloads_per_cron']);
}
}
function retriever_cron($a, $b) {
$downloads_per_cron = Config::get('retriever', 'downloads_per_cron');
// Do this first, otherwise it can interfere with retriever_retrieve_items
retriever_clean_up_completed_resources($downloads_per_cron, $a);
retriever_retrieve_items($downloads_per_cron, $a);
retriever_tidy();
}
$retriever_item_count = 0;
function retriever_retrieve_items($max_items, $a) {
global $retriever_item_count;
$retriever_schedule = array(array(1,'minute'),
array(10,'minute'),
array(1,'hour'),
array(1,'day'),
array(2,'day'),
array(1,'week'),
array(1,'month'));
$schedule_clauses = array();
for ($i = 0; $i < count($retriever_schedule); $i++) {
$num = $retriever_schedule[$i][0];
$unit = $retriever_schedule[$i][1];
array_push($schedule_clauses,
'(`num-tries` = ' . $i . ' AND TIMESTAMPADD(' . DBA::escape($unit) .
', ' . intval($num) . ', `last-try`) < now())');
}
$retrieve_items = $max_items - $retriever_item_count;
Logger::debug('retriever_retrieve_items: asked for maximum ' . $max_items . ', already retrieved ' . $retriever_item_count . ', retrieve ' . $retrieve_items);
do {
// TODO: figure out how to do this with DBA module
$retriever_resources = q("SELECT * FROM `retriever_resource` WHERE `completed` IS NULL AND (`last-try` IS NULL OR %s) ORDER BY `last-try` ASC LIMIT %d",
DBA::escape(implode($schedule_clauses, ' OR ')),
intval($retrieve_items));
if (!is_array($retriever_resources)) {
break;
}
if (count($retriever_resources) == 0) {
break;
}
Logger::debug('retriever_retrieve_items: found ' . count($retriever_resources) . ' waiting resources in database');
foreach ($retriever_resources as $retriever_resource) {
retrieve_resource($retriever_resource);
$retriever_item_count++;
}
$retrieve_items = $max_items - $retriever_item_count;
}
while ($retrieve_items > 0);
Logger::debug('retriever_retrieve_items: finished retrieving items');
}
// Look for items that are waiting even though the resource has completed. This shouldn't happen, but is worth cleaning up if it does.
function retriever_clean_up_completed_resources($max_items, $a) {
// TODO: figure out how to do this with DBA module
$r = q('SELECT retriever_resource.`id` as resource, retriever_item.`id` as item FROM retriever_resource, retriever_item, retriever_rule WHERE retriever_item.`finished` = 0 AND retriever_item.`resource` = retriever_resource.`id` AND retriever_resource.`completed` IS NOT NULL AND retriever_item.`contact-id` = retriever_rule.`contact-id` AND retriever_item.`item-uid` = retriever_rule.`uid` LIMIT %d',
intval($max_items));
if (!$r) {
$r = array();
}
Logger::debug('retriever_clean_up_completed_resources: items waiting even though resource has completed: ' . count($r));
foreach ($r as $rr) {
$retriever_item = retriever_get_retriever_item($rr['item']);
if (!DBA::isResult($retriever_item)) {
Logger::warning('retriever_clean_up_completed_resources: no retriever item with id ' . $rr['item']);
continue;
}
$item = retriever_get_item($retriever_item);
if (!$item) {
Logger::warning('retriever_clean_up_completed_resources: no item ' . $retriever_item['item-uri']);
continue;
}
$retriever_rule = get_retriever_rule($retriever_item['contact-id'], $item['uid']);
if (!$retriever_rule) {
Logger::warning('retriever_clean_up_completed_resources: no retriever for uri ' . $retriever_item['item-uri'] . ' uid ' . $retriever_item['uid'] . ' ' . $retriever_item['contact-id']);
continue;
}
$resource = DBA::selectFirst('retriever_resource', [], ['id' => intval($rr['resource'])]);
retriever_apply_completed_resource_to_item($retriever_rule, $item, $resource, $a);
Logger::info('@@@ retriever_clean_up_completed_resources tried to update id ' . $retriever_item['id'] . ' to finished, better check that it really worked!');
DBA::update('retriever_item', ['finished' => 1], ['id' => intval($retriever_item['id'])], ['finished']);
retriever_check_item_completed($item);
}
}
function retriever_tidy() {
// TODO: figure out how to do this with DBA module @@@ it is possible
q("DELETE FROM retriever_resource WHERE completed IS NOT NULL AND completed < DATE_SUB(now(), INTERVAL 1 WEEK)");
q("DELETE FROM retriever_resource WHERE completed IS NULL AND created < DATE_SUB(now(), INTERVAL 3 MONTH)");
$r = q("SELECT retriever_item.id FROM retriever_item LEFT OUTER JOIN retriever_resource ON (retriever_item.resource = retriever_resource.id) WHERE retriever_resource.id is null");
Logger::info('retriever_tidy: found ' . count($r) . ' retriever_items with no retriever_resource');
foreach ($r as $rr) {
q('DELETE FROM retriever_item WHERE id = %d', intval($rr['id']));
}
}
function retrieve_dataurl_resource($resource) {
if (!preg_match("/date:(.*);base64,(.*)/", $resource['url'], $matches)) {
Logger::info('retrieve_dataurl_resource: ' . $resource['id'] . ' does not match pattern');
} else {
$resource['type'] = $matches[1];
$resource['data'] = base64url_decode($matches[2]);
}
// Succeed or fail, there's no point retrying
q("UPDATE `retriever_resource` SET `last-try` = now(), `num-tries` = `num-tries` + 1, `completed` = now(), `data` = '%s', `type` = '%s' WHERE id = %d",
DBA::escape($resource['data']),
DBA::escape($resource['type']),
intval($resource['id']));
retriever_resource_completed($resource, $a);
}
function retrieve_resource($resource) {
if (substr($resource['url'], 0, 5) == "data:") {
return retrieve_dataurl_resource($resource);
}
$a = get_app();
$retriever_rule = get_retriever_rule($resource['contact-id'], $resource['item-uid']);
$rule_data = $retriever_rule['data'];
try {
Logger::debug('retrieve_resource: ' . ($resource['num-tries'] + 1) . ' attempt at resource ' . $resource['id'] . ' ' . $resource['url']);
$redirects = 0;
$cookiejar = '';
if (array_key_exists('storecookies', $rule_data) && $rule_data['storecookies']) {
$cookiejar = tempnam(get_temppath(), 'cookiejar-retriever-');
file_put_contents($cookiejar, $rule_data['cookiedata']);
}
$fetch_result = Network::fetchUrlFull($resource['url'], $resource['binary'], $redirects, '', $cookiejar);
if (array_key_exists('storecookies', $rule_data) && $rule_data['storecookies']) {
$retriever_rule['data']['cookiedata'] = file_get_contents($cookiejar);
DBA::update('retriever_rule', ['data' => json_encode($retriever_rule['data'])], ['id' => intval($retriever_rule["id"])]);
//@@@ check the update worked
unlink($cookiejar);
}
$resource['data'] = $fetch_result->getBody();
$resource['http-code'] = $fetch_result->getReturnCode();
$resource['type'] = $fetch_result->getContentType();
$resource['redirect-url'] = $fetch_result->getRedirectUrl();
Logger::debug('retrieve_resource: got code ' . $resource['http-code'] . ' retrieving resource ' . $resource['id'] . ' final url ' . $resource['redirect-url']);
} catch (Exception $e) {
Logger::info('retrieve_resource: unable to retrieve ' . $resource['url'] . ' - ' . $e->getMessage());
}
// TODO: figure out how to do this with DBA module
q("UPDATE `retriever_resource` SET `last-try` = now(), `num-tries` = `num-tries` + 1, `http-code` = %d, `redirect-url` = '%s' WHERE id = %d",
intval($resource['http-code']),
DBA::escape($resource['redirect-url']),
intval($resource['id']));
if ($resource['data']) {
// TODO: figure out how to do this with DBA module
q("UPDATE `retriever_resource` SET `completed` = now(), `data` = '%s', `type` = '%s' WHERE id = %d",
DBA::escape($resource['data']),
DBA::escape($resource['type']),
intval($resource['id']));
retriever_resource_completed($resource, $a);
}
}
function get_retriever_rule($contact_id, $uid, $create = false) {
$retriever_rule = DBA::selectFirst('retriever_rule', [], ['contact-id' => intval($contact_id), 'uid' => intval($uid)]);
//@@@ check that this worked
if ($retriever_rule) {
$retriever_rule['data'] = json_decode($retriever_rule['data'], true);
Logger::info('@@@ get_retriever_rule returning an actual thing');
return $retriever_rule;
}
if ($create) {
DBA::insert('retriever_rule', ['uid' => intval($uid), 'contact-id' => intval($contact_id)]);
//@@@ check that this worked
return DBA::selectFirst('retriever_rule', [], ['contact-id' => intval($contact_id), 'uid' => intval($uid)]);
}
}
function retriever_get_retriever_item($id) {
return DBA::selectFirst('retriever_item', [], ['id' => intval($id)]);
}
function retriever_get_item($retriever_item) {
$item = Item::selectFirst([], ['uri' => $retriever_item['item-uri'], 'uid' => intval($retriever_item['item-uid']), 'contact-id' => intval($retriever_item['contact-id'])]);
if (!DBA::isResult($item)) {
Logger::warning('retriever_get_item: no item found for uri ' . $retriever_item['item-uri']);
return;
}
return $item;
}
function retriever_item_completed($retriever_item_id, $resource, $a) {
Logger::debug('retriever_item_completed: id ' . $retriever_item_id . ' url ' . $resource['url']);
$retriever_item = retriever_get_retriever_item($retriever_item_id);
if (!DBA::isResult($retriever_item)) {
Logger::info('retriever_item_completed: no retriever item with id ' . $retriever_item_id);
return;
}
$item = retriever_get_item($retriever_item);
if (!$item) {
Logger::warning('retriever_item_completed: no item ' . $retriever_item['item-uri']);
return;
}
// Note: the retriever might be null. Doesn't matter.
$retriever_rule = get_retriever_rule($retriever_item['contact-id'], $retriever_item['item-uid']);
retriever_apply_completed_resource_to_item($retriever_rule, $item, $resource, $a);
DBA::update('retriever_item', ['finished' => 1], ['id' => intval($retriever_item['id'])], ['finished']);
retriever_check_item_completed($item);
}
function retriever_resource_completed($resource, $a) {
Logger::debug('retriever_resource_completed: id ' . $resource['id'] . ' url ' . $resource['url']);
foreach (DBA::select('retriever_item', ['id'], ['resource' => intval($resource['id'])]) as $retriever_item) {
retriever_item_completed($retriever_item['id'], $resource, $a);
}
}
function apply_retrospective($a, $retriever, $num) {
Logger::debug('@@@ apply_retrospective');
foreach (Item::select([], ['contact-id' => intval($retriever['contact-id'])], ['order' => ['received' => true], 'limit' => $num]) as $item) {
Logger::debug('@@@ apply_retrospective got item id ' . $item['id'] . ' uri ' . $item['uri']);
Item::update(['visible' => 0], ['id' => intval($item['id'])]);
//@@@ check that this works
foreach (DBA::select('retriever_item', [], ['item-uri' => $item['uri'], 'item-uid' => $item['uid'], 'contact-id' => $item['contact-id']]) as $retriever_item) {
DBA::delete('retriever_resource', ['id' => $retriever_item['resource']]);
DBA::delete('retriever_item', ['id' => $retriever_item['id']]);
}
retriever_on_item_insert($a, $retriever, $item);
}
}
// TODO: Currently this waits until the next cron before actually downloading. Should do it immediately.
// TODO: This queries then inserts. It should use some kind of lock to avoid requesting the same resource twice.
function retriever_on_item_insert($a, $retriever, &$item) {
if (!$retriever || !$retriever['id']) {
Logger::info('retriever_on_item_insert: No retriever supplied');
return;
}
if (!array_key_exists('enable', $retriever['data']) || !$retriever['data']['enable'] == "on") {
return;
}
if (array_key_exists('plink', $item) && strlen($item['plink'])) {
$url = $item['plink'];
}
else {
if (!array_key_exists('uri-id', $item)) {
Logger::warning('retriever_on_item_insert: item ' . $item['id'] . ' has no plink and no uri-id');
return;
}
$content = DBA::selectFirst('item-content', [], ['uri-id' => $item['uri-id']]);
$url = $content['plink'];
}
if ($retriever['data']['modurl']) {
$orig_url = $url;
$url = preg_replace('/' . $retriever['data']['pattern'] . '/', $retriever['data']['replace'], $orig_url);
Logger::debug('retriever_on_item_insert: Changed ' . $orig_url . ' to ' . $url);
}
$resource = add_retriever_resource($a, $url, $item['uid'], $item['contact-id']);
$retriever_item_id = add_retriever_item($item, $resource);
}
function add_retriever_resource($a, $url, $uid, $cid, $binary = false) {
Logger::debug('add_retriever_resource: url ' . $url . ' uid ' . $uid . ' contact-id ' . $cid);
$scheme = parse_url($url, PHP_URL_SCHEME);
if ($scheme == 'data') {
$fp = fopen($url, 'r');
$meta = stream_get_meta_data($fp);
$type = $meta['mediatype'];
$data = stream_get_contents($fp);
fclose($fp);
$url = 'md5://' . hash('md5', $url);
if (DBA::selectFirst('retriever_resource', [], ['url' => $url, 'item-uid' => intval($uid), 'contact-id' => intval($cid)])) {
//@@@ test that this really happens - it should sometimes
Logger::debug('add_retriever_resource: Resource ' . $url . ' already requested');
return $resource;
}
Logger::debug('retrieve_resource: got data URL type ' . $resource['type']);
// TODO: figure out how to do this with DBA module
// @@@ DBA::update('workerqueue', ['executed' => DateTimeFormat::utcNow()], ['pid' => $mypid, 'done' => false]);
q("INSERT INTO `retriever_resource` (`item-uid`, `contact-id`, `type`, `binary`, `url`, `completed`, `data`) " .
"VALUES (%d, %d, '%s', %d, '%s', now(), '%s')",
intval($uid),
intval($cid),
DBA::escape($type),
intval($binary ? 1 : 0),
DBA::escape($url),
DBA::escape($data));
//@@@ fix this
$r = q("SELECT * FROM `retriever_resource` WHERE `url` = '%s'", DBA::escape($url));
$resource = $r[0];
if (count($r)) {
retriever_resource_completed($resource, $a);
}
return $resource;
}
if (strlen($url) > 800) {
Logger::warning('add_retriever_resource: URL is longer than 800 characters');
}
//@@@ fix this
$r = q("SELECT * FROM `retriever_resource` WHERE `url` = '%s' AND `item-uid` = %d AND `contact-id` = %d", DBA::escape($url), intval($uid), intval($cid));
if (count($r)) {
Logger::debug('add_retriever_resource: Resource ' . $url . ' uid ' . $uid . ' cid ' . $cid . ' already requested');
return $r[0];
}
//@@@ fix this
q("INSERT INTO `retriever_resource` (`item-uid`, `contact-id`, `binary`, `url`) " .
"VALUES (%d, %d, %d, '%s')", intval($uid), intval($cid), intval($binary ? 1 : 0), DBA::escape($url));
//@@@ fix this
$r = q("SELECT * FROM `retriever_resource` WHERE `url` = '%s'", DBA::escape($url));
return $r[0];
}
function add_retriever_item(&$item, $resource) {
Logger::debug('add_retriever_item: ' . $resource['url'] . ' for ' . $item['uri'] . ' ' . $item['uid'] . ' ' . $item['contact-id']);
//@@@ can use selectFirst
$r = q("SELECT COUNT(*) FROM `retriever_item` WHERE " .
"`item-uri` = '%s' AND `item-uid` = %d AND `contact-id` = %d AND `resource` = %d",
DBA::escape($item['uri']), intval($item['uid']), intval($item['contact-id']), intval($resource['id']));
if ($r[0]['COUNT(*)'] > 0) {
Logger::info("add_retriever_item: retriever item already present for " . $item['uri'] . ' ' . $item['uid'] . ' ' . $item['contact-id']);
return;
}
//@@@ fix this
q("INSERT INTO `retriever_item` (`item-uri`, `item-uid`, `contact-id`, `resource`) " .
"VALUES ('%s', %d, %d, %d)",
DBA::escape($item['uri']), intval($item['uid']), intval($item['contact-id']), intval($resource["id"]));
//@@@ fix this
$r = q("SELECT id FROM `retriever_item` WHERE " .
"`item-uri` = '%s' AND `item-uid` = %d AND `contact-id` = %d AND `resource` = %d ORDER BY id DESC",
DBA::escape($item['uri']), intval($item['uid']), intval($item['contact-id']), intval($resource['id']));
if (!count($r)) {
Logger::info("add_retriever_item: couldn't create retriever item for " . $item['uri'] . ' ' . $item['uid'] . ' ' . $item['contact-id']);
return;
}
Logger::debug('add_retriever_item: created retriever_item ' . $r[0]['id'] . ' for item ' . $item['uri'] . ' ' . $item['uid'] . ' ' . $item['contact-id']);
return $r[0]['id'];
}
function retriever_get_encoding($resource) {
$matches = array();
if (preg_match('/charset=(.*)/', $resource['type'], $matches)) {
return trim(array_pop($matches));
}
return 'utf-8';
}
function retriever_apply_xslt_text($xslt_text, $doc) {
if (!$xslt_text) {
Logger::info('retriever_apply_xslt_text: empty XSLT text');
return $doc;
}
$xslt_doc = new DOMDocument();
if (!$xslt_doc->loadXML($xslt_text)) {
Logger::info('retriever_apply_xslt_text: could not load XML');
return $doc;
}
Logger::debug('@@@ retriever_apply_xslt_text: ' . $xslt_text);
$xp = new XsltProcessor();
$xp->importStylesheet($xslt_doc);
$result = $xp->transformToDoc($doc);
return $result;
}
//@@@ I think this is supposed to update the $item, but it doesn't
function retriever_apply_dom_filter($retriever, &$item, $resource) {
//@@@ check if id and uri-id are there //@@@ uri-id definitely is not
Logger::debug('retriever_apply_dom_filter: applying XSLT to ' . $item['id'] . ' ' . $item['uri'] . ' contact ' . $item['contact-id'] . ' uri-id ' . $item['uri-id']);
if (!array_key_exists('include', $retriever['data']) && !array_key_exists('customxslt', $retriever['data'])) {
Logger::info('retriever_apply_dom_filter: no include and no customxslt');
return;
}
if (!$resource['data']) {
Logger::info('retriever_apply_dom_filter: no text to work with');
return;
}
$doc = retriever_load_into_dom($resource);
$doc = retriever_extract($doc, $retriever);
if (!$doc) {
Logger::info('retriever_apply_dom_filter: failed to apply extract XSLT template');
return;
}
$doc = retriever_globalise_urls($doc, $resource);
if (!$doc) {
Logger::info('retriever_apply_dom_filter: failed to apply fix urls XSLT template');
return;
}
$body = HTML::toBBCode($doc->saveHTML());
if (!strlen($body)) {
Logger::info('retriever_apply_dom_filter retriever ' . $retriever['id'] . ' item ' . $item['id'] . ': output was empty');
return;
}
$body .= "\n\n" . L10n::t('Retrieved') . ' ' . date("Y-m-d") . ': [url=';
$body .= $item['plink'];
$body .= ']' . $item['plink'] . '[/url]';
$uri_id = ItemURI::getIdByURI($item['uri']); //@@@ why can't I get this from the item itself? Consider using item['id'] instead
Logger::debug('retriever_apply_dom_filter: XSLT result \"' . $body . '\"');
Item::update(['body' => $body], ['uri-id' => $uri_id]);
}
function retriever_load_into_dom($resource) {
Logger::info('@@@ retriever_load_into_dom start');
$encoding = retriever_get_encoding($resource);
$content = mb_convert_encoding($resource['data'], 'HTML-ENTITIES', $encoding);
$doc = new DOMDocument('1.0', 'UTF-8');
if (strpos($resource['type'], 'html') !== false) {
@$doc->loadHTML($content);
}
else {
$doc->loadXML($content);
}
Logger::info('@@@ retriever_load_into_dom end');
return $doc;
}
function retriever_extract($doc, $retriever) {
Logger::info('@@@ retriever_extract start');
$params = array('$spec' => $retriever['data']);
$extract_template = Renderer::getMarkupTemplate('extract.tpl', 'addon/retriever/');
$extract_xslt = Renderer::replaceMacros($extract_template, $params);
if ($retriever['data']['include']) {
Logger::debug('retriever_apply_dom_filter: applying include/exclude template \"' . $extract_xslt . '\"');
$doc = retriever_apply_xslt_text($extract_xslt, $doc);
}
if (array_key_exists('customxslt', $retriever['data']) && $retriever['data']['customxslt']) {
Logger::debug('retriever_extract: applying custom XSLT \"' . $retriever['data']['customxslt'] . '\"');
$doc = retriever_apply_xslt_text($retriever['data']['customxslt'], $doc);
}
Logger::info('@@@ retriever_extract end');
return $doc;
}
function retriever_globalise_urls($doc, $resource) {
Logger::info('@@@ retriever_globalise_urls start');
$components = parse_url($resource['redirect-url']);
$rooturl = $components['scheme'] . "://" . $components['host'];
$dirurl = $rooturl . dirname($components['path']) . "/";
$params = array('$dirurl' => $dirurl, '$rooturl' => $rooturl);
$fix_urls_template = Renderer::getMarkupTemplate('fix-urls.tpl', 'addon/retriever/');
$fix_urls_xslt = Renderer::replaceMacros($fix_urls_template, $params);
$doc = retriever_apply_xslt_text($fix_urls_xslt, $doc);
Logger::info('@@@ retriever_globalise_urls end');
return $doc;
}
function retrieve_images(&$item, $a) {
// Note that $item doesn't necessarily contain all the fields you would expect, in particular 'id'
//@@@ doe sit contain uri-id? //@@@ it definitely does not
Logger::debug('@@@ retrieve_images start item id '. (array_key_exists('id', $item) ? $item['id'] : 'undef') . ' uri ' . $item['uri'] . ' uri id ' . $item['uri-id'] . ' plink ' . $item['plink'] . ' guid ' . $item['guid']);
$uri_id = ItemURI::getIdByURI($item['uri']); //@@@ why can't I get this from the item itself?
$content = DBA::selectFirst('item-content', ['body'], ['uri-id' => $uri_id]);
$body = $content['body'];
if (!strlen($body)) {
Logger::warning('retrieve_images: no body for uri-id ' . $uri_id);
return;
}
// I suspect that the first two are not used any more?
preg_match_all("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", $item["body"], $matches1);
preg_match_all("/\[img\](.*?)\[\/img\]/ism", $item["body"], $matches2);
preg_match_all("/\[img\=([^\]]*)\]([^[]*)\[\/img\]/ism", $item["body"], $matches3);
$matches = array_merge($matches1[3], $matches2[1], $matches3[1]);
Logger::debug('retrieve_images: found ' . count($matches) . ' images for item ' . $item['uri'] . ' ' . $item['uid'] . ' ' . $item['contact-id']);
foreach ($matches as $url) {
if (strpos($url, get_app()->getBaseUrl()) === FALSE) {
$resource = add_retriever_resource($a, $url, $item['uid'], $item['contact-id'], true);
if (!$resource['completed']) {
add_retriever_item($item, $resource);
}
else {
retriever_transform_images($a, $item, $resource);
}
}
}
}
function retriever_check_item_completed(&$item)
{
// TODO: figure out how to do this with DBA module
$r = q('SELECT count(*) FROM retriever_item WHERE `item-uri` = "%s" ' .
'AND `item-uid` = %d AND `contact-id` = %d AND `finished` = 0',
DBA::escape($item['uri']), intval($item['uid']),
intval($item['contact-id']));
$waiting = $r[0]['count(*)'];
Logger::debug('retriever_check_item_completed: item ' . $item['uri'] . ' ' . $item['uid'] . ' '. $item['contact-id'] . ' waiting for ' . $waiting . ' resources');
$old_visible = $item['visible'];
$item['visible'] = $waiting ? 0 : 1;
if (array_key_exists('id', $item) && ($item['id'] > 0) && ($old_visible != $item['visible'])) {
Logger::debug('retriever_check_item_completed: changing visible flag to ' . $item['visible']);
Item::update(['visible' => 0], ['id' => intval($item['id'])]);
}
}
function retriever_apply_completed_resource_to_item($retriever, &$item, $resource, $a) {
Logger::debug('retriever_apply_completed_resource_to_item: retriever ' . ($retriever ? $retriever['id'] : 'none') . ' resource ' . $resource['url'] . ' plink ' . $item['plink']);
if (strpos($resource['type'], 'image') !== false) {
Logger::info('@@@ retriever_apply_completed_resource_to_item this is an image must transform');
retriever_transform_images($a, $item, $resource);
}
if (!$retriever) {
return;
}
if ((strpos($resource['type'], 'html') !== false) ||
(strpos($resource['type'], 'xml') !== false)) {
retriever_apply_dom_filter($retriever, $item, $resource);
if ($retriever['data']['images'] ) {
retrieve_images($item, $a);
}
}
}
//@@@ todo: what is this reference for? document if needed delete if not
function retriever_transform_images($a, &$item, $resource) {
if (!$resource['data']) {
Logger::info('retriever_transform_images: no data available for ' . $resource['id'] . ' ' . $resource['url']);
return;
}
$uri_id = ItemURI::getIdByURI($item['uri']); //@@@ why can't I get this from the item itself?
$data = $resource['data'];
$type = $resource['type'];
$uid = $item['uid'];
$cid = $item['contact-id'];
$rid = Photo::newResource();
$path = parse_url($resource['url'], PHP_URL_PATH);
$parts = pathinfo($path);
$filename = $parts['filename'] . (array_key_exists('extension', $parts) ? '.' . $parts['extension'] : '');
$album = 'Wall Photos';
$scale = 0;
$desc = ''; // TODO: store alt text with resource when it's requested so we can fill this in
Logger::debug('retriever_transform_images storing ' . strlen($data) . ' bytes type ' . $type . ': uid ' . $uid . ' cid ' . $cid . ' rid ' . $rid . ' filename ' . $filename . ' album ' . $album . ' scale ' . $scale . ' desc ' . $desc);
$image = new Image($data, $type);
if (!$image->isValid()) {
Logger::warning('retriever_transform_images: invalid image found at URL ' . $resource['url'] . ' for item ' . $item['id']);
return;
}
$photo = Photo::store($image, $uid, $cid, $rid, $filename, $album, 0, 0, "", "", "", "", $desc);
$new_url = System::baseUrl() . '/photo/' . $rid . '-0.' . $image->getExt();
if (!strlen($new_url)) {
Logger::warning('retriever_transform_images: no replacement URL for image ' . $resource['url']);
return;
}
$content = DBA::selectFirst('item-content', ['body'], ['uri-id' => $uri_id]);
$body = $content['body'];
Logger::debug('retriever_transform_images: replacing ' . $resource['url'] . ' with ' . $new_url . ' in item ' . $item['uri']);
$body = str_replace($resource["url"], $new_url, $body);
Item::update(['body' => $body], ['uri-id' => $uri_id]);
}
function retriever_content($a) {
if (!local_user()) {
$a->page['content'] .= "<p>Please log in</p>";
return;
}
if ($a->argv[1] === 'help') {
//@@@ fix me
$feeds = q("SELECT `id`, `name`, `thumb` FROM contact WHERE `uid` = %d AND `network` = 'feed'",
local_user());
foreach ($feeds as $k=>$v) {
$feeds[$k]['url'] = $a->getBaseUrl() . '/retriever/' . $v['id'];
}
$template = Renderer::getMarkupTemplate('/help.tpl', 'addon/retriever/');
$a->page['content'] .= Renderer::replaceMacros($template, array(
'$config' => $a->getBaseUrl() . '/settings/addon',
'$feeds' => $feeds));
return;
}
if ($a->argv[1]) {
$retriever_rule = get_retriever_rule($a->argv[1], local_user(), false);
if (!empty($_POST["id"])) {
$retriever_rule = get_retriever_rule($a->argv[1], local_user(), true);
$retriever_rule['data'] = array();
foreach (array('modurl', 'pattern', 'replace', 'enable', 'images', 'customxslt', 'storecookies', 'cookiedata') as $setting) {
if (empty($_POST['retriever_' . $setting])) {
$retriever_rule['data'][$setting] = NULL;
}
else {
$retriever_rule['data'][$setting] = $_POST['retriever_' . $setting];
}
}
foreach ($_POST as $k=>$v) {
if (preg_match("/retriever-(include|exclude)-(\d+)-(element|attribute|value)/", $k, $matches)) {
$retriever_rule['data'][$matches[1]][intval($matches[2])][$matches[3]] = $v;
}
}
// You've gotta have an element, even if it's just "*"
foreach ($retriever_rule['data']['include'] as $k=>$clause) {
if (!$clause['element']) {
unset($retriever_rule['data']['include'][$k]);
}
}
foreach ($retriever_rule['data']['exclude'] as $k=>$clause) {
if (!$clause['element']) {
unset($retriever_rule['data']['exclude'][$k]);
}
}
//@@@ fix me
q("UPDATE `retriever_rule` SET `data`='%s' WHERE `id` = %d",
DBA::escape(json_encode($retriever_rule['data'])), intval($retriever_rule["id"]));
$a->page['content'] .= "<p><b>Settings Updated";
if (!empty($_POST["retriever_retrospective"])) {
apply_retrospective($a, $retriever_rule, $_POST["retriever_retrospective"]);
$a->page['content'] .= " and retrospectively applied to " . $_POST["retriever_retrospective"] . " posts";
}
$a->page['content'] .= ".</p></b>";
}
$template = Renderer::getMarkupTemplate('/rule-config.tpl', 'addon/retriever/');
$a->page['content'] .= Renderer::replaceMacros($template, array(
'$enable' => array(
'retriever_enable',
L10n::t('Enabled'),
$retriever_rule['data']['enable']),
'$modurl' => array(
'retriever_modurl',
L10n::t('Modify URL'),
$retriever_rule['data']['modurl'],
L10n::t("Modify each article's URL with regular expressions before retrieving.")),
'$pattern' => array(
'retriever_pattern',
L10n::t('URL Pattern'),
$retriever_rule['data']['pattern'],
L10n::t('Regular expression matching part of the URL to replace')),
'$replace' => array(
'retriever_replace',
L10n::t('URL Replace'),
$retriever_rule['data']['replace'],
L10n::t('Text to replace matching part of above regular expression')),
'$images' => array(
'retriever_images',
L10n::t('Download Images'),
$retriever_rule['data']['images']),
'$retrospective' => array(
'retriever_retrospective',
L10n::t('Retrospectively Apply'),
'0',
L10n::t('Reapply the rules to this number of posts')),
'storecookies' => array(
'retriever_storecookies',
L10n::t('Store cookies'),
$retriever_rule['data']['storecookies'],
L10n::t("Preserve cookie data across fetches.")),
'$cookiedata' => array(
'retriever_cookiedata',
L10n::t('Cookie Data'),
$retriever_rule['data']['cookiedata'],
L10n::t("Latest cookie data for this feed. Netscape cookie file format.")),
'$customxslt' => array(
'retriever_customxslt',
L10n::t('Custom XSLT'),
$retriever_rule['data']['customxslt'],
L10n::t("When standard rules aren't enough, apply custom XSLT to the article")),
'$title' => L10n::t('Retrieve Feed Content'),
'$help' => $a->getBaseUrl() . '/retriever/help',
'$help_t' => L10n::t('Get Help'),
'$submit_t' => L10n::t('Submit'),
'$submit' => L10n::t('Save Settings'),
'$id' => ($retriever_rule["id"] ? $retriever_rule["id"] : "create"),
'$tag_t' => L10n::t('Tag'),
'$attribute_t' => L10n::t('Attribute'),
'$value_t' => L10n::t('Value'),
'$add_t' => L10n::t('Add'),
'$remove_t' => L10n::t('Remove'),
'$include_t' => L10n::t('Include'),
'$include' => $retriever_rule['data']['include'],
'$exclude_t' => L10n::t('Exclude'),
'$exclude' => $retriever_rule['data']['exclude']));
return;
}
}
function retriever_contact_photo_menu($a, &$args) {
if (!$args) {
return;
}
if ($args["contact"]["network"] == "feed") {
$args["menu"][ 'retriever' ] = array(L10n::t('Retriever'), $a->getBaseUrl() . '/retriever/' . $args["contact"]['id']);
}
}
function retriever_post_remote_hook(&$a, &$item) {
// Note that $item doesn't necessarily contain all the fields you would expect, in particular 'id'
Logger::info('retriever_post_remote_hook: ' . $item['uri'] . ' ' . $item['uid'] . ' ' . $item['contact-id']);
$uri_id = ItemURI::getIdByURI($item['uri']); //@@@ why can't I get this from the item itself?
$retriever_rule = get_retriever_rule($item['contact-id'], $item["uid"], false);
if ($retriever_rule) {
retriever_on_item_insert($a, $retriever_rule, $item);
}
else {
if (PConfig::get($item["uid"], 'retriever', 'oembed')) {
// Convert to HTML and back to take advantage of bbcode's resolution of oembeds.
$content = DBA::selectFirst('item-content', [], ['uri-id' => $uri_id]);
$body = HTML::toBBCode(BBCode::convert($content['body']));
if ($body) {
$item['body'] = $body;
Item::update(['body' => $body], ['uri-id' => $uri_id]);
}
}
if (PConfig::get($item["uid"], 'retriever', 'all_photos')) {
retrieve_images($item, $a); //@@@ backwards
}
}
retriever_check_item_completed($item);
}
function retriever_plugin_settings(&$a,&$s) {
$all_photos = PConfig::get(local_user(), 'retriever', 'all_photos');
$oembed = PConfig::get(local_user(), 'retriever', 'oembed');
$template = Renderer::getMarkupTemplate('/settings.tpl', 'addon/retriever/');
$s .= Renderer::replaceMacros($template, array(
'$allphotos' => array(
'retriever_all_photos',
L10n::t('All Photos'),
$all_photos,
L10n::t('Check this to retrieve photos for all posts')),
'$oembed' => array(
'retriever_oembed',
L10n::t('Resolve OEmbed'),
$oembed,
L10n::t('Check this to attempt to retrieve embedded content for all posts - useful e.g. for Facebook posts')),
'$submit' => L10n::t('Save Settings'),
'$title' => L10n::t('Retriever Settings'),
'$help' => $a->getBaseUrl() . '/retriever/help'));
}
function retriever_plugin_settings_post($a,$post) {
if ($_POST['retriever_all_photos']) {
PConfig::set(local_user(), 'retriever', 'all_photos', $_POST['retriever_all_photos']);
}
else {
PConfig::del(local_user(), 'retriever', 'all_photos');
}
if ($_POST['retriever_oembed']) {
PConfig::set(local_user(), 'retriever', 'oembed', $_POST['retriever_oembed']);
}
else {
PConfig::del(local_user(), 'retriever', 'oembed');
}
}