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RFC 4839
Media Type Registrations for the Open eBook Publication Structure (OEBPS) Package File (OPF).
G. Conboy, J. Rivlin, J. Ferraiolo. April 2007.

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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 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 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 ( Intended usage: COMMON Restrictions on usage: None Author: International Digital Publishing Forum ( Change controller: International Digital Publishing Forum ( 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: John Rivlin eBook Technologies, Inc. 7745 Herschel Avenue La Jolla, CA 92037 Phone: (650) 255-3389 EMail: Jon Ferraiolo IBM Menlo Park, CA Phone: (650) 926-5865 EMail: Conboy, et al. Informational [Page 4]
RFC 4839 Media Type Registrations for OPF April 2007 Full Copyright Statement Copyright (C) The IETF Trust (2007). This document is subject to the rights, licenses and restrictions contained in BCP 78, and except as set forth therein, the authors retain all their rights. This document and the information contained herein are provided on an "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY, THE IETF TRUST AND THE INTERNET ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Intellectual Property The IETF takes no position regarding the validity or scope of any Intellectual Property Rights or other rights that might be claimed to pertain to the implementation or use of the technology described in this document or the extent to which any license under such rights might or might not be available; nor does it represent that it has made any independent effort to identify any such rights. Information on the procedures with respect to rights in RFC documents can be found in BCP 78 and BCP 79. Copies of IPR disclosures made to the IETF Secretariat and any assurances of licenses to be made available, or the result of an attempt made to obtain a general license or permission for the use of such proprietary rights by implementers or users of this specification can be obtained from the IETF on-line IPR repository at The IETF invites any interested party to bring to its attention any copyrights, patents or patent applications, or other proprietary rights that may cover technology that may be required to implement this standard. Please address the information to the IETF at Acknowledgement Funding for the RFC Editor function is currently provided by the Internet Society. Conboy, et al. Informational [Page 5]


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