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Old 28.07.2023, 21:47
Nimboid Nimboid is offline
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Join Date: Jan 2023
Location: UK
Posts: 18
Default Handling DEEPDECRYPT relative URLs

So, I am trying to acquire links to attachments in a phpBB-hosted forum. This requires being logged-in, so I have provided my user/pass to JD via 'Basic Authentication' settings. Natively, provided with a suitable forum page URL, JDownloader is only finding the thumbnails, and not following the href links:
Code:
<a class="file-preview " href="/phpBB2/index.php?attachments/capture-jpg.1988988/" target="_blank">
	<img src="/phpBB2/data/attachments/1915/1915251-5369dc6cb5e0da0fb7fd46255176b083.jpg" alt="Capture.JPG" width="264" height="200" loading="lazy">
</a>
The logs don't reveal any errors. Am I right in thinking that spending time on a LinkCrawler Rule is the way to go?

To this end, I have made a DEEPDECRYPT rule. I have established that its pattern catches the page URL, because the LinkCrawlerRule...log contains the page source, and the Rule cookies update, but it does not result in any additions to the LinkGrabber pane, nor any traces in logs.
My deepPattern:
Code:
  "deepPattern"        : "(?i)<a class=\"file-preview \" (href=\"[^\"]+\") target=\"_blank\">",
Do I need to follow with a second REWRITE LinkCrawler Rule to convert the relative href to an absolute URL? And if so, what should its pattern be? Should it expect to receive and look for the whole of the 'upstream' deepPattern, or just its matching group? I have tried a followup rule, without success, as it doesn't generate its LinkCrawlerRule...log and without any errors appearing in logs either.

It's frustrating to trawl this forum and finding so much of the content of LinkCrawler Rule discussions is submerged under "**External links are only visible to Support Staff**"!
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