40 lines
2.1 KiB
Markdown
40 lines
2.1 KiB
Markdown
A "pingback" is a system whereby URLs you might reference in a blog post are
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contacted by the blog publishing software at publishing time (i.e., once) so
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that they might update a list of "pingbacks" to the URL. The originating
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URL's blog software might then display a list of pingbacks, or an excerpt of
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the text from your blog, perhaps interleaved with comments, etc.
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At a technical level, external URLs are extracted from your blog post by the
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blogging software, fetched, inspected for information to determine whether the
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remote server is configured to support pingbacks (look for link tags, or HTTP
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headers) and the relevant pingback URL sent an XML-RPC packet.
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There are other technologies to achieve the same thing: trackbacks predate
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pingbacks but are more vulnerable to spam due to design problems.
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The spec for pingbacks is at <http://www.hixie.ch/specs/pingback/pingback>.
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I would like to somehow use pingbacks in conjunction with ikiwiki. I suppose
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this could be achieved using a commit hook and some external software in which
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case I will consider this done with an entry in [[tips]]; otherwise a
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[[plugins|plugin]] to implement pingbacks would be great.
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-- [[Jon]] (Wed Jan 14 13:48:47 GMT 2009)
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> I think it's now possible to implement trackback and pingback receiving
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> support in ikiwiki. One easy way to do it would be to hook it into the
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> existing [[plugins/comments]] plugin -- each pingback/trackback that
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> ikiwiki recieves would result in the creation if a new comment, which
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> would be subject to the usual comment filtering (ie, blogspam) and
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> moderation and would then show up amoung the other, regular comments on
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> the page.
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>
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> (One wrinkle: would need to guard against duplicate pings. Maybe by
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> checking existing comments for any that have the same url?)
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>
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> As for sending trackbacks and pingbacks, this could fairly easily be
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> implemented using a `editcontent` hook. Since this hook is called
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> whenever a page is posted or edited, and gets the changed content, it can
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> simply scan it for urls (may have to htmlize first?), and send pings to
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> all urls found. --[[Joey]]
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