OAuth library functions 1.0.3
liboauth is a collection of POSIX-c functions implementing the OAuth Core RFC 5849 standard. liboauth provides functions to escape and encode parameters according to OAuth specification and offers high-level functionality to sign requests or verify OAuth signatures as well as perform HTTP requests.
The source includes example code and a self-tests based on http://wiki.oauth.net/TestCases. The library has been tested against the http://oauth-sandbox.mediamatic.nl (now offline) and http://term.ie/oauth/example test servers using commandline-cURL, libcurl and a QT4.3.2 QHttp C++ application on win32 (mingw), gnu/Linux and Mac/OSX.
The source is debianized. On Debian systems
debian-buildpackage can be used to compile and
dpkg -i to install liboauth and liboauth-dev packages.
liboauth uses autotools and libtools. The tar.gz package includes the
configure script, but if you get the source from the repository, you first need to generate the build environment with something alike:
aclocal; autoheader; libtoolize –copy; autoconf; automake –gnu –add-missing –copy. (OSX users use
./configure and build liboauth with
make. see the INSTALL file for further instructions on gnu autotools.
./configure –help for information on optional features (
Consult oauth.h for a detailed reference of available functions. This documentation is also available as unix manual page:
man 3 oauth.
tests/oauthtest.c for the self-test code and example.
tests/oauthexample.c implements a simple hardcoded OAuth-consumer. If you simply want to calculate the OAuth-signature, all you need is oauth_sign_url. Future releases might include more elaborate usage information: Feel free to ask questions.
oauth-utils includes a command-line OAuth-consumer and signature-verification tool using liboauth.
The curl wrapper interface should never have been part of libOauth. It came in handy during initial development and test deployments, and by the time I wanted to remove it, there were already too many users...
It is still convenient for self-tests and getting started, but application developers should rather aim for a dedicated optimized implementation appropriate for each app.
oauth_http.c does not do any error-handling for instance, also SSL certificate checking and/or similar CURL options depend on the use-case at hand. Furthermore the available curl options and parameters in oauth_http.c are limited.
Therefore with the release of version 1.0.0 all
oauth_http functions have been marked as deprecated.
Developers of applications using
oauth_http.c are advised to simply copy the relevent code into their application (the MIT license is very permissive) and adopt it, if neccesary.
Send bug reports, patches or suggestions to robin @ gareus . org.
Note: OpenSSL is not strictly compatible with the GPL license. An exemption (to the GPL) allowing to link and redistribute liboauth with the OpenSSL library is is included in the source files. More information is available in the README. You can avoid this whole issue by using NSS instead of OpenSSL, configuring liboauth with
The Debian packaging that comes with the source-code is licensed under the GNU General Public License.
MIT License (source-code):
Copyright 2007-2012 Robin Gareus
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
GPL (Debian packaging and alternative source-code license):
This package is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This package is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this package; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA