How can I allow users to search non-text files, such as PDF or Microsoft Word documents?
OJS and OCS supports indexing of non-text files via external conversion applications. The “Search Settings” configuration section in config.inc.php can be modified to enable indexing of certain binary file formats by setting a “index[MIME_TYPE]” setting (with the desired file mime-type) to the path of the appropriate external text converter for that file format. Note that additional third-party software must be installed to use this feature (such as “pdftotext” for PDF files).