Network Working Group G. Conboy
Request for Comments: 4839 J. Rivlin
Category: Informational eBook Technologies, Inc.
J. Ferraiolo
IBM
April 2007
Media Type Registrations for
the Open eBook Publication Structure (OEBPS) Package File (OPF)
Status of This Memo
This memo provides information for the Internet community. It does
not specify an Internet standard of any kind. Distribution of this
memo is unlimited.
Copyright Notice
Copyright (C) The IETF Trust (2007).
Abstract
This document serves to register a media type for the Open eBook
Publication Structure (OEBPS) Package Files.
1. Introduction
The present document registers a media type for the Open eBook
Publication Structure (OEBPS) Package File (OPF). The OPF file is an
XML file that describes an OEBPS Publication [OEBPS]. It identifies
all other files in the publication and provides descriptive
information about them. OPF and its related standards are maintained
and defined by the International Digital Publishing Forum (IDPF).
The media type defined here is needed to correctly identify OPF files
when they are edited on disk, referenced in OEBPS Container files, or
used in other places where media types are used.
2. Security Considerations
The OPF files contain well-formed XML conforming to the XML 1.0
specification.
Clearly, it is possible to author malicious files which, for example,
contain malformed data. Most XML parsers protect themselves from
such attacks by rigorously enforcing conformance.
Conboy, et al. Informational [Page 1]
RFC 4839 Media Type Registrations for OPF April 2007 All processors that read OPF files should rigorously check the size and validity of data retrieved. There is no current provision in the OEBPS Package File standard for encryption, signing, or authentication within the file format. 3. IANA Considerations IANA has registered the media type application/oebps-package+xml as specified in Section 3.1. The registration uses the template present in [RFC4288]. 3.1. Media Type for Downloadable Sounds Type name: application Subtype name: oebps-package+xml Required parameters: none Optional parameters: none Encoding considerations: OPF files are UTF-8 or UTF-16 encoded XML Security considerations: none Interoperability considerations: none Published specification: Specification is published by the International Digital Publishing Forum and can be found at http://www.idpf.org/oebps/ oebps1.2/download/oeb12-xhtml.htm Applications which use this media type: 1) eBook Technologies, Inc. eBook reading system. 2) Microsoft Reader 3) OSoft reader 4) Content Reserve Publishing System 5) IDPF Container WG 6) PC Reader.com 7) MobiPocket reader Conboy, et al. Informational [Page 2]
RFC 4839 Media Type Registrations for OPF April 2007 Additional information: Magic number(s): none File extension(s): .opf Macintosh file type code(s): TEXT Person & email address to contact for further information: Nick Bogaty (nbogaty@idpf.org) Intended usage: COMMON Restrictions on usage: None Author: International Digital Publishing Forum (www.idpf.org) Change controller: International Digital Publishing Forum (www.idpf.org) 4. Normative References [OEBPS] "Open eBook Publication Structure 1.2", International Digital Publishing Forum (IDPF), New York, NY USA, 2002. [RFC4288] Freed, N. and J. Klensin, "Media Type Specifications and Registration Procedures", BCP 13, RFC 4288, December 2005. Conboy, et al. Informational [Page 3]
RFC 4839 Media Type Registrations for OPF April 2007 Authors' Addresses Garth Conboy eBook Technologies, Inc. 7745 Herschel Avenue La Jolla, CA 92037 Phone: (858) 551-4950 EMail: gc@ebooktechnologies.com John Rivlin eBook Technologies, Inc. 7745 Herschel Avenue La Jolla, CA 92037 Phone: (650) 255-3389 EMail: john@ebooktechnologies.com Jon Ferraiolo IBM Menlo Park, CA Phone: (650) 926-5865 EMail: jferrai@us.ibm.com Conboy, et al. Informational [Page 4]
RFC 4839 Media Type Registrations for OPF April 2007
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Conboy, et al. Informational [Page 5]
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