Webmentions pseudocode

gistfile1.txt

 1. Check that both a target and source value has been sent with the mention

 2. Parse target URL and check it actually points to something on my site

 3. Attempt to get the content from source

 4. Check if any of my saved webmentions are from this source already

 5. If so check the saved webmentions has the same target (someone's note could mention two of my notes for example)

 6. If not goto 10.

 7. If yes then check the source still "mentions" the target, i.e. check the 'in-reply-to' values from the source HTML

 8. If not delete the saved webmention

 9. If so update the information in the saved webmention

10. No saved webmention so save this as a new entry