[Koha-bugs] [Bug 28779] Calling request.pl with non-existent biblionumber gives internal server error

[bugzilla-daemon at bugs.koha-community.org]

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=28779

--- Comment #1 from Joonas Kylmälä <joonas.kylmala at helsinki.fi> ---
Created attachment 123280
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https://bugs.koha-community.org/bugzilla3/attachment.cgi?id=123280&action=edit
Bug 28779: Skip processing of non-existent biblios

Just checking with a regex that whether an input looks like a biblionumber
is not enough, we need to also verify there is a biblio really existing
in the database and skip processing of hold request for non-existent
biblionumbers.

To test:
 1) Go to page /cgi-bin/koha/reserve/request.pl?biblionumbers=XXXXX
    where XXXXX is non-existent biblionumber, notice internal server error
 2) Apply patch
 3) Repeat step 1 and notice we are greeted with a reserve page
    for no particular biblio (same behavior if you inputted a non-
    integer value)

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