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
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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.
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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
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RFC 4839 Media Type Registrations for OPF April 2007
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