Attaching a server-side file with a link...?

[justicej]

In a non-roundcube section of our site, we allow users to list pdf's that they can view in their browser.  We want to provide a link for each which effectively says "Send this pdf to someone else" and have that link redirect the user to a compose page with the pdf already loaded as an attachment. Any ideas on how to do this?

Note that the user is already logged into roundcube/dovecot etc.
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[SKaero]

It would be pretty easy to build a plugin that would attach the file automatically using the message_compose plugin hook https://github.com/roundcube/roundcubemail/wiki/Plugin-Hooks#message_compose

[justicej]

@SKaero - thank you!  This should do it.