Tickets :: Comment on [#15056] Wrong MIME type on address book exports

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Comment	> When employing Turba's Import/Export feature to export an address > book using the vCard format (either version 2 or 3), the downloaded > file's MIME type is wrong. The HTTP header will be > > Content-Type: text/calendar > > when it should be > > Content-Type: text/vcard > > While a wrong MIME type normally is not the most important thing on > earth, it can have some undesired results. When this is combined with > "no browser sniffing" headers (i.e. "X-Content-Type-Options: > nosniff"), some browsers will not simply adopt the filename suggested > by the "Content-Disposition" header's filename field, which would > read "contacts.vcf" in this case. Instead, the browser will suggest > saving the file as "contacts.ics" because it has been declared an > iCalendar file (text/calendar). This in turn will be irritating for > non-tech-savvy users, as a file with this name will not be > automatically imported by a local contact management software. > > The reason for the wrong MIME type seems to be that the > "Horde_Data_Vcard" class inherits directly from "Horde_Data_Imc". The > Horde_Data_Imc's "exportFile" method always uses the "text/calendar" > MIME type when making files available for download. > > I saw in the neighboring Horde_Data_Csv class that there is a field > called "_contentType" which may allow not to duplicate > Horde_Data_Imc's exportFile method for use with Horde_Data_Vcard, but > merely adjust the MIME type when downloading. However, my practical > knowledge of PHP's object model and is not sufficient to actually > make use of non-duplicated code here. As a result, the attached patch > is probably not the right way to do it, but it does solve the problem > at hand.
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