This is a contribution to naclports, the collection of ports of various open-source projects to Native Client. https://code.google.com/p/naclports/

The enclosed files extend naclports to build the Exiv2 library, an image metadata library that supports the commonly used metadata standards Exif, IPTC and XMP. http://www.exiv2.org/

Contents of this directory allow to build:

• Exiv2 library, version 0.23
  • PNG support
  • XMP metadata support

What does it NOT include:

• Exiv2 CLI Just use the library in another binary or use a wrapper to use the library from Javascript.

What we did not test:

• Native language support gettext is only included in the glibc toolchain, while we only used newlib toolchain and no NLS. Exiv2 builds with both toolchains.

Requirements provided by naclports:

• expat
• jsoncpp
• zlib

How to build (pepper33)

• recursively copy ports/exiv2 to your copy of naclports (src/ports)
• build via make exiv2 or ./make-all.sh exiv2
  • this will build dependencies also

We originally created this port to include Exiv2 in a Chrome extension, and by this allow the support of all metadata standards mentioned before, while other Javascript-based solutions lack of such support. https://github.com/bhenne/ChromeExtension-PhotoMetadataPrivacy/

The port was done in the context of privacy research at the Distributed Computing & Security Group of the Leibniz Universität Hannover, Germany. The original port was done as part of the bachelor thesis of Maximilian Koch, which was advised by Benjamin Henne.

http://www.dcsec.uni-hannover.de/ [email protected]