3 namespace Wallabag\CoreBundle\Helper
;
6 use Psr\Log\LoggerInterface
;
7 use Symfony\Component\HttpFoundation\File\MimeType\MimeTypeExtensionGuesser
;
8 use Symfony\Component\Validator\Constraints\Locale
as LocaleConstraint
;
9 use Symfony\Component\Validator\Constraints\Url
as UrlConstraint
;
10 use Symfony\Component\Validator\Validator\ValidatorInterface
;
11 use Wallabag\CoreBundle\Entity\Entry
;
12 use Wallabag\CoreBundle\Tools\Utils
;
15 * This kind of proxy class take care of getting the content from an url
16 * and update the entry with what it found.
24 protected $mimeGuesser;
25 protected $fetchingErrorMessage;
26 protected $eventDispatcher;
27 protected $storeArticleHeaders;
29 public function __construct(Graby
$graby, RuleBasedTagger
$tagger, ValidatorInterface
$validator, LoggerInterface
$logger, $fetchingErrorMessage, $storeArticleHeaders = false)
31 $this->graby
= $graby;
32 $this->tagger
= $tagger;
33 $this->validator
= $validator;
34 $this->logger
= $logger;
35 $this->mimeGuesser
= new MimeTypeExtensionGuesser();
36 $this->fetchingErrorMessage
= $fetchingErrorMessage;
37 $this->storeArticleHeaders
= $storeArticleHeaders;
41 * Update entry using either fetched or provided content.
43 * @param Entry $entry Entry to update
44 * @param string $url Url of the content
45 * @param array $content Array with content provided for import with AT LEAST keys title, html, url to skip the fetchContent from the url
46 * @param bool $disableContentUpdate Whether to skip trying to fetch content using Graby
48 public function updateEntry(Entry
$entry, $url, array $content = [], $disableContentUpdate = false)
50 if (!empty($content['html'])) {
51 $content['html'] = $this->graby
->cleanupHtml($content['html'], $url);
54 if ((empty($content) || false === $this->validateContent($content)) && false === $disableContentUpdate) {
55 $fetchedContent = $this->graby
->fetchContent($url);
56 $fetchedContent['title'] = $this->sanitizeContentTitle($fetchedContent['title'], $fetchedContent['content_type']);
58 // when content is imported, we have information in $content
59 // in case fetching content goes bad, we'll keep the imported information instead of overriding them
60 if (empty($content) || $fetchedContent['html'] !== $this->fetchingErrorMessage
) {
61 $content = $fetchedContent;
65 // be sure to keep the url in case of error
66 // so we'll be able to refetch it in the future
67 $content['url'] = !empty($content['url']) ? $content['url'] : $url;
69 // In one case (at least in tests), url is empty here
70 // so we set it using $url provided in the updateEntry call.
71 // Not sure what are the other possible cases where this property is empty
72 if (empty($entry->getUrl()) && !empty($url)) {
76 $this->stockEntry($entry, $content);
80 * Use a Symfony validator to ensure the language is well formatted.
83 * @param string $value Language to validate and save
85 public function updateLanguage(Entry
$entry, $value)
87 // some lang are defined as fr-FR, es-ES.
88 // replacing - by _ might increase language support
89 $value = str_replace('-', '_', $value);
91 $errors = $this->validator
->validate(
93 (new LocaleConstraint())
96 if (0 === \
count($errors)) {
97 $entry->setLanguage($value);
102 $this->logger
->warning('Language validation failed. ' . (string) $errors);
106 * Use a Symfony validator to ensure the preview picture is a real url.
108 * @param Entry $entry
109 * @param string $value URL to validate and save
111 public function updatePreviewPicture(Entry
$entry, $value)
113 $errors = $this->validator
->validate(
115 (new UrlConstraint())
118 if (0 === \
count($errors)) {
119 $entry->setPreviewPicture($value);
124 $this->logger
->warning('PreviewPicture validation failed. ' . (string) $errors);
130 * @param Entry $entry
131 * @param string $value Date to validate and save
133 public function updatePublishedAt(Entry
$entry, $value)
137 // is it a timestamp?
138 if (false !== filter_var($date, FILTER_VALIDATE_INT
)) {
143 // is it already a DateTime?
144 // (it's inside the try/catch in case of fail to be parse time string)
145 if (!$date instanceof \DateTime
) {
146 $date = new \
DateTime($date);
149 $entry->setPublishedAt($date);
150 } catch (\Exception
$e) {
151 $this->logger
->warning('Error while defining date', ['e' => $e, 'url' => $entry->getUrl(), 'date' => $value]);
156 * Helper to extract and save host from entry url.
158 * @param Entry $entry
160 public function setEntryDomainName(Entry
$entry)
162 $domainName = parse_url($entry->getUrl(), PHP_URL_HOST
);
163 if (false !== $domainName) {
164 $entry->setDomainName($domainName);
169 * Helper to set a default title using:
170 * - url basename, if applicable
173 * @param Entry $entry
175 public function setDefaultEntryTitle(Entry
$entry)
177 $url = parse_url($entry->getUrl());
178 $path = pathinfo($url['path'], PATHINFO_BASENAME
);
181 $path = $url['host'];
184 $entry->setTitle($path);
188 * Try to sanitize the title of the fetched content from wrong character encodings and invalid UTF-8 character.
191 * @param $contentType
195 private function sanitizeContentTitle($title, $contentType)
197 if ('application/pdf' === $contentType) {
198 $title = $this->convertPdfEncodingToUTF8($title);
201 return $this->sanitizeUTF8Text($title);
205 * If the title from the fetched content comes from a PDF, then its very possible that the character encoding is not
206 * UTF-8. This methods tries to identify the character encoding and translate the title to UTF-8.
210 * @return string (maybe contains invalid UTF-8 character)
212 private function convertPdfEncodingToUTF8($title)
214 // first try UTF-8 because its easier to detect its present/absence
215 foreach (['UTF-8', 'UTF-16BE', 'WINDOWS-1252'] as $encoding) {
216 if (mb_check_encoding($title, $encoding)) {
217 return mb_convert_encoding($title, 'UTF-8', $encoding);
225 * Remove invalid UTF-8 characters from the given string.
227 * @param string $rawText
231 private function sanitizeUTF8Text($rawText)
233 if (mb_check_encoding($rawText, 'UTF-8')) {
237 return iconv('UTF-8', 'UTF-8//IGNORE', $rawText);
241 * Stock entry with fetched or imported content.
242 * Will fall back to OpenGraph data if available.
244 * @param Entry $entry Entry to stock
245 * @param array $content Array with at least title, url & html
247 private function stockEntry(Entry
$entry, array $content)
249 $this->updateOriginUrl($entry, $content['url']);
251 $this->setEntryDomainName($entry);
253 if (!empty($content['title'])) {
254 $entry->setTitle($content['title']);
255 } elseif (!empty($content['open_graph']['og_title'])) {
256 $entry->setTitle($content['open_graph']['og_title']);
259 $html = $content['html'];
260 if (false === $html) {
261 $html = $this->fetchingErrorMessage
;
263 if (!empty($content['open_graph']['og_description'])) {
264 $html .= '<p><i>But we found a short description: </i></p>';
265 $html .= $content['open_graph']['og_description'];
269 $entry->setContent($html);
270 $entry->setReadingTime(Utils
::getReadingTime($html));
272 if (!empty($content['status'])) {
273 $entry->setHttpStatus($content['status']);
276 if (!empty($content['authors']) && \
is_array($content['authors'])) {
277 $entry->setPublishedBy($content['authors']);
280 if (!empty($content['all_headers']) && $this->storeArticleHeaders
) {
281 $entry->setHeaders($content['all_headers']);
284 if (!empty($content['date'])) {
285 $this->updatePublishedAt($entry, $content['date']);
288 if (!empty($content['language'])) {
289 $this->updateLanguage($entry, $content['language']);
292 if (!empty($content['open_graph']['og_image'])) {
293 $this->updatePreviewPicture($entry, $content['open_graph']['og_image']);
296 // if content is an image, define it as a preview too
297 if (!empty($content['content_type']) && \
in_array($this->mimeGuesser
->guess($content['content_type']), ['jpeg', 'jpg', 'gif', 'png'], true)) {
298 $this->updatePreviewPicture($entry, $content['url']);
301 if (!empty($content['content_type'])) {
302 $entry->setMimetype($content['content_type']);
306 $this->tagger
->tag($entry);
307 } catch (\Exception
$e) {
308 $this->logger
->error('Error while trying to automatically tag an entry.', [
309 'entry_url' => $content['url'],
310 'error_msg' => $e->getMessage(),
316 * Update the origin_url field when a redirection occurs
317 * This field is set if it is empty and new url does not match ignore list.
319 * @param Entry $entry
322 private function updateOriginUrl(Entry
$entry, $url)
324 if (empty($url) || $entry->getUrl() === $url) {
328 $parsed_entry_url = parse_url($entry->getUrl());
329 $parsed_content_url = parse_url($url);
332 * The following part computes the list of part changes between two
335 * As array_diff_assoc only computes changes to go from the left array
336 * to the right one, we make two differents arrays to have both
337 * directions. We merge these two arrays and sort keys before passing
338 * the result to the switch.
340 * The resulting array gives us all changing parts between the two
341 * urls: scheme, host, path, query and/or fragment.
343 $diff_ec = array_diff_assoc($parsed_entry_url, $parsed_content_url);
344 $diff_ce = array_diff_assoc($parsed_content_url, $parsed_entry_url);
346 $diff = array_merge($diff_ec, $diff_ce);
347 $diff_keys = array_keys($diff);
350 if ($this->ignoreUrl($entry->getUrl())) {
351 $entry->setUrl($url);
357 * This switch case lets us apply different behaviors according to
358 * changing parts of urls.
360 * As $diff_keys is an array, we provide arrays as cases. ['path'] means
361 * 'only the path is different between the two urls' whereas
362 * ['fragment', 'query'] means 'only fragment and query string parts are
363 * different between the two urls'.
365 * Note that values in $diff_keys are sorted.
367 switch ($diff_keys) {
369 if (($parsed_entry_url['path'] . '/' === $parsed_content_url['path']) // diff is trailing slash, we only replace the url of the entry
370 || ($url === urldecode($entry->getUrl()))) { // we update entry url if new url is a decoded version of it, see EntryRepository#findByUrlAndUserId
371 $entry->setUrl($url);
375 $entry->setUrl($url);
381 if (empty($entry->getOriginUrl())) {
382 $entry->setOriginUrl($entry->getUrl());
384 $entry->setUrl($url);
390 * Check entry url against an ignore list to replace with content url.
392 * XXX: move the ignore list in the database to let users handle it
394 * @param string $url url to test
396 * @return bool true if url matches ignore list otherwise false
398 private function ignoreUrl($url)
400 $ignored_hosts = ['feedproxy.google.com', 'feeds.reuters.com'];
401 $ignored_patterns = ['https?://www\.lemonde\.fr/tiny.*'];
403 $parsed_url = parse_url($url);
405 $filtered = array_filter($ignored_hosts, function ($var) use ($parsed_url) {
406 return $var === $parsed_url['host'];
409 if ([] !== $filtered) {
413 $filtered = array_filter($ignored_patterns, function ($var) use ($url) {
414 return preg_match("`$var`i", $url);
417 if ([] !== $filtered) {
425 * Validate that the given content has at least a title, an html and a url.
427 * @param array $content
429 * @return bool true if valid otherwise false
431 private function validateContent(array $content)
433 return !empty($content['title']) && !empty($content['html']) && !empty($content['url']);