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<?php
/**
* Provide methods to import files.
*/
class FreshRSS_Import_Service {
/** @var FreshRSS_CategoryDAO */
private $catDAO;
/** @var FreshRSS_FeedDAO */
private $feedDAO;
/**
* Initialize the service for the given user.
*
* @param string $username
*/
public function __construct($username) {
require_once(LIB_PATH . '/lib_opml.php');
$this->catDAO = FreshRSS_Factory::createCategoryDao($username);
$this->feedDAO = FreshRSS_Factory::createFeedDao($username);
}
/**
* This method parses and imports an OPML file.
*
* @param string $opml_file the OPML file content.
* @return boolean false if an error occurred, true otherwise.
*/
public function importOpml($opml_file) {
$opml_array = array();
try {
$opml_array = libopml_parse_string($opml_file, false);
} catch (LibOPML_Exception $e) {
if (FreshRSS_Context::$isCli) {
fwrite(STDERR, 'FreshRSS error during OPML parsing: ' . $e->getMessage() . "\n");
} else {
Minz_Log::warning($e->getMessage());
}
return false;
}
$this->catDAO->checkDefault();
return $this->addOpmlElements($opml_array['body']);
}
/**
* This method imports an OPML file based on its body.
*
* @param array $opml_elements an OPML element (body or outline).
* @param string $parent_cat the name of the parent category.
* @return boolean false if an error occurred, true otherwise.
*/
private function addOpmlElements($opml_elements, $parent_cat = null) {
$isOkStatus = true;
$nb_feeds = count($this->feedDAO->listFeeds());
$nb_cats = count($this->catDAO->listCategories(false));
$limits = FreshRSS_Context::$system_conf->limits;
//Sort with categories first
usort($opml_elements, function ($a, $b) {
return strcmp(
(isset($a['xmlUrl']) ? 'Z' : 'A') . (isset($a['text']) ? $a['text'] : ''),
(isset($b['xmlUrl']) ? 'Z' : 'A') . (isset($b['text']) ? $b['text'] : ''));
});
foreach ($opml_elements as $elt) {
if (isset($elt['xmlUrl'])) {
// If xmlUrl exists, it means it is a feed
if (FreshRSS_Context::$isCli && $nb_feeds >= $limits['max_feeds']) {
Minz_Log::warning(_t('feedback.sub.feed.over_max',
$limits['max_feeds']));
$isOkStatus = false;
continue;
}
if ($this->addFeedOpml($elt, $parent_cat)) {
$nb_feeds++;
} else {
$isOkStatus = false;
}
} elseif (!empty($elt['text'])) {
// No xmlUrl? It should be a category!
$limit_reached = ($nb_cats >= $limits['max_categories']);
if (!FreshRSS_Context::$isCli && $limit_reached) {
Minz_Log::warning(_t('feedback.sub.category.over_max',
$limits['max_categories']));
$isOkStatus = false;
continue;
}
if ($this->addCategoryOpml($elt, $parent_cat, $limit_reached)) {
$nb_cats++;
} else {
$isOkStatus = false;
}
}
}
return $isOkStatus;
}
/**
* This method imports an OPML feed element.
*
* @param array $feed_elt an OPML element (must be a feed element).
* @param string $parent_cat the name of the parent category.
* @return boolean false if an error occurred, true otherwise.
*/
private function addFeedOpml($feed_elt, $parent_cat) {
if ($parent_cat == null) {
// This feed has no parent category so we get the default one
$this->catDAO->checkDefault();
$default_cat = $this->catDAO->getDefault();
$parent_cat = $default_cat->name();
}
$cat = $this->catDAO->searchByName($parent_cat);
if ($cat == null) {
// If there is not $cat, it means parent category does not exist in
// database.
// If it happens, take the default category.
$this->catDAO->checkDefault();
$cat = $this->catDAO->getDefault();
}
// We get different useful information
$url = Minz_Helper::htmlspecialchars_utf8($feed_elt['xmlUrl']);
$name = Minz_Helper::htmlspecialchars_utf8($feed_elt['text']);
$website = '';
if (isset($feed_elt['htmlUrl'])) {
$website = Minz_Helper::htmlspecialchars_utf8($feed_elt['htmlUrl']);
}
$description = '';
if (isset($feed_elt['description'])) {
$description = Minz_Helper::htmlspecialchars_utf8($feed_elt['description']);
}
$error = false;
try {
// Create a Feed object and add it in DB
$feed = new FreshRSS_Feed($url);
$feed->_category($cat->id());
$feed->_name($name);
$feed->_website($website);
$feed->_description($description);
switch ($feed_elt['type'] ?? '') {
case FreshRSS_Export_Service::TYPE_HTML_XPATH:
$feed->_kind(FreshRSS_Feed::KIND_HTML_XPATH);
break;
case FreshRSS_Export_Service::TYPE_RSS_ATOM:
default:
$feed->_kind(FreshRSS_Feed::KIND_RSS);
break;
}
$xPathSettings = [];
foreach ($feed_elt as $key => $value) {
if (is_array($value) && !empty($value['value']) && ($value['namespace'] ?? '') === FreshRSS_Export_Service::FRSS_NAMESPACE) {
switch ($key) {
case 'cssFullContent': $feed->_pathEntries($value['value']); break;
case 'filtersActionRead': $feed->_filtersAction('read', preg_split('/[\n\r]+/', $value['value'])); break;
case 'xPathItem': $xPathSettings['item'] = $value['value']; break;
case 'xPathItemTitle': $xPathSettings['itemTitle'] = $value['value']; break;
case 'xPathItemContent': $xPathSettings['itemContent'] = $value['value']; break;
case 'xPathItemUri': $xPathSettings['itemUri'] = $value['value']; break;
case 'xPathItemAuthor': $xPathSettings['itemAuthor'] = $value['value']; break;
case 'xPathItemTimestamp': $xPathSettings['itemTimestamp'] = $value['value']; break;
case 'xPathItemThumbnail': $xPathSettings['itemThumbnail'] = $value['value']; break;
case 'xPathItemCategories': $xPathSettings['itemCategories'] = $value['value']; break;
}
}
}
if (!empty($xPathSettings)) {
$feed->_attributes('xpath', $xPathSettings);
}
// Call the extension hook
$feed = Minz_ExtensionManager::callHook('feed_before_insert', $feed);
if ($feed != null) {
// addFeedObject checks if feed is already in DB so nothing else to
// check here
$id = $this->feedDAO->addFeedObject($feed);
$error = ($id == false);
} else {
$error = true;
}
} catch (FreshRSS_Feed_Exception $e) {
if (FreshRSS_Context::$isCli) {
fwrite(STDERR, 'FreshRSS error during OPML feed import: ' . $e->getMessage() . "\n");
} else {
Minz_Log::warning($e->getMessage());
}
$error = true;
}
if ($error) {
if (FreshRSS_Context::$isCli) {
fwrite(STDERR, 'FreshRSS error during OPML feed import from URL: ' . $url . ' in category ' . $cat->id() . "\n");
} else {
Minz_Log::warning('Error during OPML feed import from URL: ' . $url . ' in category ' . $cat->id());
}
}
return !$error;
}
/**
* This method imports an OPML category element.
*
* @param array $cat_elt an OPML element (must be a category element).
* @param string $parent_cat the name of the parent category.
* @param boolean $cat_limit_reached indicates if category limit has been reached.
* if yes, category is not added (but we try for feeds!)
* @return boolean false if an error occurred, true otherwise.
*/
private function addCategoryOpml($cat_elt, $parent_cat, $cat_limit_reached) {
// Create a new Category object
$catName = Minz_Helper::htmlspecialchars_utf8($cat_elt['text']);
$cat = new FreshRSS_Category($catName);
$error = true;
if (FreshRSS_Context::$isCli || !$cat_limit_reached) {
$id = $this->catDAO->addCategoryObject($cat);
$error = ($id === false);
}
if ($error) {
if (FreshRSS_Context::$isCli) {
fwrite(STDERR, 'FreshRSS error during OPML category import from URL: ' . $catName . "\n");
} else {
Minz_Log::warning('Error during OPML category import from URL: ' . $catName);
}
}
if (isset($cat_elt['@outlines'])) {
// Our cat_elt contains more categories or more feeds, so we
// add them recursively.
// Note: FreshRSS does not support yet category arborescence
$error &= !$this->addOpmlElements($cat_elt['@outlines'], $catName);
}
return !$error;
}
}
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