NAME
WWW::Facebook::API - Facebook API implementation
VERSION
This document and others distributed with this module describe WWW::Facebook::API version 0.4.18
SYNOPSIS
use WWW::Facebook::API;
# @ENV{qw/WFA_API_KEY WFA_SECRET WFA_DESKTOP/} are the initial values,
# so use those if you only have one app and don't want to pass in values
# to constructor
my $client = WWW::Facebook::API->new(
desktop => 0,
api_key => 'your api key',
secret => 'your secret key',
);
# Change API key and secret
print "Enter your public API key: ";
chomp( my $val = <STDIN> );
$client->api_key($val);
print "Enter your API secret: ";
chomp($val = <STDIN> );
$client->secret($val);
# not needed if web app (see $client->canvas->get_fb_params)
$client->auth->get_session( $token );
use Data::Dumper;
my $friends_perl = $client->friends->get;
print Dumper $friends_perl;
my $notifications_perl = $client->notifications->get;
print Dumper $notifications_perl;
# Current user's quotes
my $quotes_perl = $client->users->get_info(
uids => $friends_perl,
fields => ['quotes']
);
print Dumper $quotes_perl;
$client->auth->logout;
DESCRIPTION
A Perl implementation of the Facebook API, working off of the canonical Java and PHP implementations. By default it uses JSON::Any to parse the response returned by Facebook's server. There is an option to return the raw response in either XML or JSON (See the "parse" method below). As the synopsis states, the following environment variables are used to set the defaults for new instances:
WFA_API_KEY
WFA_SECRET
WFA_SESSION_KEY
WFA_DESKTOP
Additionally, for each instance that is created, the following environment variables are used if no values are set:
WFA_API_KEY_APP_PATH
WFA_SECRET_APP_PATH
WFA_SESSION_KEY_APP_PATH
WFA_DESKTOP_APP_PATH
Where "APP_PATH" is replaced by whatever $client->app_path returns, with all non-alphanumeric characters replaced with an underscore and all characters upcased (e.g., foo-bar-baz becomes FOO_BAR_BAZ).
SUBROUTINES/METHODS
new( %params )
Returns a new instance of this class. You are able to pass in any of
the attribute method names in WWW::Facebook::API to set its value:
my $client = WWW::Facebook::API->new(
parse => 1,
format => 'JSON',
secret => 'application_secret_key',
api_key => 'application_key',
session_key => 'session_key',
session_expires => 'session_expires',
session_uid => 'session_uid',
desktop => 1,
api_version => '1.0',
callback => 'callback_url',
next => 'next',
popup => 'popup',
skipcookie => 'skip_cookie',
throw_errors => 1,
);
$copy = $client->new;
NAMESPACE METHODS
All method names from the Facebook API are lower_cased instead of CamelCase.
admin
admin namespace of the API (See WWW::Facebook::API::Admin).
application
application namespace of the API (See
WWW::Facebook::API::Application).
auth
For desktop apps, these are synonymous:
$client->auth->get_session( $client->auth->create_token );
$client->auth->get_session;
And that's all you really have to do (but see
WWW::Facebook::API::Auth for details about opening a browser on *nix
for Desktop apps). "get_session" automatically sets "session_uid",
"session_key", and "session_expires" for $client. It returns
nothing.
If the desktop attribute is set to false the $token must be the
auth_token returned from Facebook to your web app for that user:
if ( $q->param('auth_token') ) {
$client->auth->get_session( $q->param('auth_token') );
}
"get_session" automatically sets "session_uid", "session_key", and
"session_expires" for $client. It returns nothing.
See WWW::Facebook::API::Auth for details.
canvas
Work with the canvas. See WWW::Facebook::API::Canvas.
$response = $client->canvas->get_user( $q )
$response = $client->canvas->get_fb_params( $q )
$response = $client->canvas->get_non_fb_params( $q )
$response = $client->canvas->validate_sig( $q )
$response = $client->canvas->in_fb_canvas( $q )
$response = $client->canvas->in_frame( $q )
comments
comments namespace of the API (See WWW::Facebook::API::Comments).
connect
connect namespace of the API (See WWW::Facebook::API::Connect).
data
data namespace of the API (See WWW::Facebook::API::Data). All method
names from the Facebook API are lower_cased instead of CamelCase:
$response = $client->data->set_cookie( uid => 23, qw/name foo value bar/);
$cookies = $client->data->get_cookies(
uid => 4534,
name => 'foo',
);
events
events namespace of the API (See WWW::Facebook::API::Events). All
method names from the Facebook API are lower_cased instead of
CamelCase:
$response = $client->events->get(
uid => 'uid',
eids => [@eids],
start_time => 'utc',
end_time => 'utc',
rsvp_status => 'attending|unsure|declined|not_replied',
);
$response = $client->events->get_members( eid => 233 );
fbml
fbml namespace of the API (See WWW::Facebook::API::FBML). All method
names from the Facebook API are lower_cased instead of CamelCase:
$response = $client->fbml->set_ref_handle( handle => '', fbml => '');
$response = $client->fbml->refresh_img_src( url => '');
$response = $client->fbml->refresh_ref_url( url => '');
feed
feed namespace of the API (See WWW::Facebook::API::Feed). All method
names from the Facebook API are lower_cased instead of CamelCase:
$response
= $client->feed->publish_story_to_user(
title => 'title',
body => 'markup',
...
);
$response
= $client->feed->publish_action_of_user(
title => 'title',
body => 'markup',
...
);
$response
= $client->feed->publish_templatized_action(
actor_id => 'title',
title_template => 'markup',
...
);
fql fql namespace of the API (See WWW::Facebook::API::FQL):
$response = $client->fql->query( query => 'FQL query' );
friends
friends namespace of the API (See WWW::Facebook::API::Friends). All
method names from the Facebook API are lower_cased instead of
CamelCase:
$response = $client->friends->get;
$response = $client->friends->get_app_users;
$response
= $client->friends->are_friends( uids1 => [1,5,8], uids2 => [2,3,4] );
$response = $client->friends->get_lists;
groups
groups namespace of the API (See WWW::Facebook::API::Groups). All
method names from the Facebook API are lower_cased instead of
CamelCase:
$response = $client->groups->get( uid => 234324, gids => [2423,334] );
$response = $client->groups->get_members( gid => 32 );
intl
intl namespace of the API (See WWW::Facebook::API::Intl).
links
links namespace of the API (See WWW::Facebook::API::Links).
livemesssage
liveMesssage namespace of the API (See
WWW::Facebook::API::LiveMesssage).
message
message namespace of the API (See WWW::Facebook::API::Message).
notes
notes namespace of the API (See WWW::Facebook::API::Notes).
notifications
notifications namespace of the API (See
WWW::Facebook::API::Notifications). All method names from the
Facebook API are lower_cased instead of CamelCase:
$response = $client->notifications->get;
$response = $client->notifications->send(
to_ids => [ 1, 3 ],
notification => 'FBML notification markup',
);
$response = $client->notifications->send_email(
recipients => [1, 2343, 445],
subject => 'subject',
text => 'text version of email body',
fbml => 'fbml version of email body',
);
pages
pages namespace of the API (See WWW::Facebook::API::Pages). All
method names from the Facebook API are lower_cased instead of
CamelCase:
$response = $client->pages->get_info(
page_ids => [@pages],
fields => [@fields],
uid => 'user',
type => 'page type',
);
$page_added_app = $client->pages->is_app_added( page_id => 'page' );
$is_admin = $client->pages->is_admin( page_id => 'page' );
$is_fan = $client->pages->is_fan( page_id => 'page', uid => 'uid' )
permissions
permissions namespace of the API (See
WWW::Facebook::API::Permissions).
photos
photos namespace of the API (See WWW::Facebook::API::Photos). All
method names from the Facebook API are lower_cased instead of
CamelCase:
$response = $client->photos->add_tag(
pid => 2,
tag_uid => 3,
tag_text => "me",
x => 5,
y => 6
);
$response = $client->photos->create_album(
name => 'fun in the sun',
location => 'California',
description => "Summer '07",
);
$response = $client->photos->get( aid => 2, pids => [4,7,8] );
$response = $client->photos->get_albums( uid => 1, pids => [3,5] );
$response = $client->photos->get_tags( pids => [4,5] );
$response = $client->photos->upload(
aid => 5,
caption => 'beach',
data => 'raw data',
);
profile
profile namespace of the API (See WWW::Facebook::API::Profile). All
method names from the Facebook API are lower_cased instead of
CamelCase:
$response = $client->profile->get_fbml( uid => 3 );
$response = $client->profile->set_fbml( uid => 5,
profile => 'markup',
profile_action => 'markup',
mobile_profile => 'markup',
);
sms sms namespace of the API (See WWW::Facebook::API::SMS).
status
status namespace of the API (See WWW::Facebook::API::Status).
stream
stream namespace of the API (See WWW::Facebook::API::Stream).
users
users namespace of the API (See WWW::Facebook::API::Users). All
method names from the Facebook API are lower_cased instead of
CamelCase:
$response = $client->users->get_info(
uids => 2343,
fields => [ qw/about_me quotes/ ]
);
$uid = $client->users->get_logged_in_user;
$response = $client->users->has_app_permission(
ext_perm => 'status_update|photo_upload'
);
$app_added = $client->users->is_app_user;
$response = $client->users->set_status(
status => 'status message',
clear => 1|0,
);
video
video namespace of the API (See WWW::Facebook::API::Video).
ATTRIBUTE METHODS
These are methods to get/set the object's attributes.
api_key( $new_api_key )
The developer's API key. If $ENV{'WFA_API_KEY'} is set, all
instances will be initialized with its value. See the Facebook API
documentation for more information.
api_version( $new_version )
Which version to use (default is "1.0", which is the latest one
supported currently). Corresponds to the argument "v" that is passed
in to methods as a parameter.
app_id()
The application id where your Facebook app is described, e.g.:
http://www.facebook.com/apps/application.php?id=THIS_NUMBER
Remember, "WWW::Facebook::API" is not that clairvoyant: You must
first set this number (when calling "new()") in order to use it.
app_path()
If using the Facebook canvas, the path to your application. For
example if your application is at http://apps.facebook.com/example/
this should be "example".
apps_uri()
The apps uri for Facebook apps. The default is
http://apps.facebook.com/.
callback( $new_default_callback )
The callback URL for your application. See the Facebook API
documentation. Just a convenient place holder for the value.
call_success( $is_success, $error_message )
Takes in two values, the first setting the object's
last_call_success attribute, and the second setting the object's
last_error attribute. Returns an array reference containing the
last_call_success and last_error values, in that order:
my $response = $client->call_success( 1, undef );
if ( $response->[0] == 1 ) {
print 'Last call successful';
}
if ( not defined $response->[1] ) {
print 'Error message is undefined';
}
$client->call_success( 0,'2: The service is not available at this time.');
$response = $client->call_success;
if ( not $response->[0] ) {
print 'Last call unsuccessful';
}
if ( not defined $response->[1] ) {
print "Error $response->[1]";
}
The "call" method calls this method, and shouldn't need to be called
to set anything, just to get the value later if "throw_errors" is
false.
config($filename)
Used when instantiating a new object to set the environment
variables. The file has a simple, BASH-style format:
WFA_API_KEY_MYAPP=383378efa485934bc
WFA_SECRET_MYAPP=234234ac902f340923
WFA_SESSION_KEY_MYAPP=34589349abce989d
WFA_DESKTOP_MYAPP=1
If the file is found, and the environment variables are already set,
then the variables will not be changed.
debug(0|1)
A boolean set to either true or false, determining if debugging
messages should be carped for REST calls. Defaults to 0.
desktop(0|1)
A boolean signifying if the client is being used for a desktop
application. If $ENV{'WFA_DESKTOP'} is set, all instances will be
initialized with its value. Defaults to 0 otherwise. See the
Facebook API documentation for more information.
format('JSON'|'XML')
The default format to use if none is supplied with an API method
call. Currently available options are XML and JSON. Defaults to
JSON.
last_call_success(1|0)
A boolean set to true or false, to show whether the last call was
succesful or not. Called by "call_success". Defaults to 1.
last_error( $error_message )
A string holding the error message of the last failed call to the
REST server. Called by "call_success". Defaults to undef.
next( $new_default_next_url )
See the Facebook API documentation's Authentication Guide. Just a
convenient place holder for the value.
parse(1|0)
Defaults to 1. If set to true, the response returned by each method
call will be a Perl structure (see each method for the structure it
will return). If it is set to 0, the response string from the server
will be returned. (The response string is unescaped if the 'desktop'
attribute is false).
popup( $popup )
See the Facebook API documentation's Authentication Guide. Just a
convenient place holder for the value.
query( $query )
Stores the current query object to use (either CGI or
Apache::Request) but really anything that implements the "param()"
method can be used. N.B. When using "require_*" methods below,
Apache::Request will croak because it does not implement a redirect
method.
secret( $new_secret_key )
For a desktop application, this is the secret that is used for
calling "auth->create_token" and "auth->get_session". For a web
application, secret is used for all calls to the API. If
$ENV{'WFA_SECRET'} is set, all instances will be initialized with
its value. See the Facebook API documentation under Authentication
for more information.
server_uri( $new_server_uri )
The server uri to access the Facebook REST server. Default is
'http://api.facebook.com/restserver.php'. Used to make calls to the
Facebook server, and useful for testing. See the Facebook API
documentation.
session_expires( $new_expires )
The session expire timestamp for the client's user. Automatically
set when "$client->auth->get_session" is called. See the Facebook
API documentation.
session_key( $new_key )
The session key for the client's user. Automatically set when
"$client->auth->get_session" is called. See the Facebook API
documentation.
session_uid( $new_uid )
The session's uid for the client's user. Automatically set when
"$client->auth->get_session" is called. See the Facebook API
documentation.
skipcookie(0|1)
See the Facebook API documentation's Authentication Guide. Just a
convenient place holder for the value.
throw_errors(0|1)
A boolean set to either true of false, signifying whether or not to
"confess" when an error is returned from the REST server.
ua The LWP::UserAgent agent used to communicate with the REST server.
The agent_alias is initially set to "Perl-WWW-Facebook-API/0.4.18".
PUBLIC METHODS
call( $method, %args )
The method which other submodules within WWW::Facebook::API use to
call the Facebook REST interface. It takes in a string signifying
the method to be called (e.g., 'auth.getSession'), and key/value
pairs for the parameters to use: $client->call( 'auth.getSession',
auth_token => 'b3324235e' );
For all calls, if " parse " is set to true and an empty hash/array
reference is returned from facebook, nothing will be returned
instead of the empty hash/array reference.
generate_sig( params => $params_hashref, secret => $secret )
Generates a sig when given a parameters hash reference and a secret
key.
get_add_url( %params )
Returns the URL to add your application with the parameters (that
are given) included. Note that the API key and the API version
parameters are also included automatically. If the "next" parameter
is passed in, it's string-escaped. Used for platform applications:
$response = $client->get_add_url( next => 'http://my.website.com' );
# prints http://www.facebook.com/app.php?api_key=key&v=1.0
# &next=http%3A%2F%2Fmy.website.com
print $response;
get_app_url
Returns the URL to your application, if using the Facebook canvas.
Uses <$client->app_path>, which you have to set yourself (See
<app_path> below).
get_facebook_url( $subdomain )
Returns the URL to Facebook. You can specifiy a specific network as
a parameter:
$response = $client->get_facebook_url( 'apps' );
print $response; # prints http://apps.facebook.com
get_infinite_session_url()
Returns the URL for the user to generate an infinite session for
your application:
$response = $client->get_infinite_session_url;
# prints http://www.facebook.com/codegen.php?api_key=key&v=1.0
print $response;
From what I've seen, the session keys that Facebook returns don't
expire automatically, so as long as you don't call
$client->auth->logout, you shouldn't even need to worry about this.
get_login_url( %params )
Returns the URL to login to your application with the parameters
(that are defined) included. If the "next" parameter is passed in,
it's string-escaped:
$response = $client->get_login_url( next => 'http://my.website.com' );
# prints http://www.facebook.com/login.php?api_key=key&v=1.0
# &next=http%3A%2F%2Fmy.website.com
print $response;
get_url( $type, @args )
Called by all the above "get_url" methods above. $type can be
'login', 'app', 'add', 'facebook', 'infinitesession', or 'custom'.
@args contains the query parameters for the the cases when $type is
not 'app' or 'facebook'. In the case of 'custom', the first item in
@args is the url path relative to the facebook website. All of the
"get__url" methods correspond to the ones in the official PHP
client.
log_string($params_hashref, $response)
Pass in the params and the response from a call, and it will make a
formatted string out of it showing the parameters used, and the
response received.
redirect( $url, $query_object )
Called by "require()" to redirect the user either within the canvas
or without. If no <$query_object> is defined, then whatever is in
"$client->query" will be used. (See WWW::Facebook::API::Canvas) If
no redirect is required, nothing is returned. That is the only case
when there is no return value. If a redirect is required, there are
two cases that are covered:
user not logged in
If there isn't a user logged in to Facebook's system, then a
redirect to the Facebook login page is printed to STDOUT with a
next parameter to the appropriate page. The redirect is called
with the the CGI module that comes standard with perl. The
return value in this case is 1.
user logged in
If the user is logged in to Facebook, and a redirect is
required, the necessary FBML is returned: "<fb:redirect
url="WHATEVER">". So the return value is the FBML, which you can
then print to STDOUT.
require_add( $query )
Redirects the user to what "get_add_url()" returns. See "require()"
below for the $query parameter.
require_frame( $query )
Redirects the user to what "get_login_url( canvas =" '1' )> returns.
See "require()" below for the $query parameter.
require_login( $query )
Redirects the user to what "get_login_url()" returns. See
"require()" below for the $query parameter.
require( $what, $query )
The official PHP client has "require_*" methods that take no
arguments. Logically, you better know what you want to require when
you call each of them, so this API consolidates them into one
method. The valid values for $what are 'add', 'frame', and 'login'.
$query is the query object to use (most likely CGI). If $query is
undefined, the value of " $client-"query >> is used.
session( uid => $uid, key => $session_key, expires => $session_expires )
Sets the "user", "session_key", and "session_expires" all at once.
unescape_string($escaped_string)
Returns its parameter with all the escape sequences unescaped. If
you're using a web app, this is done automatically to the response.
verify_sig( sig => $expected_sig, params => $params_hashref )
Checks the signature for a given set of parameters against an
expected value.
PRIVATE METHODS
addurl_params( %params )
Called by both "get_login_url" and "get_add_url" to process any of
their parameters. Prepends the api_key and the version number as
parameters and returns the parameter string.
checkvalues_of($params_hashref)
Makes sure all the values of the $params_hashref that need to be set
are set. Uses the defaults for those values that are needed and not
supplied.
formatand_check_params( $method, %args )
Format method parameters (given in %args) according to Facebook API
specification. Returns a list of items: A hash reference of the
newly formatted params (based on %params) and the raw data (and
filename, if passed in) if the call is a photo or video upload:
($params, $raw_data, $filename) = $self->formatand_check_params( $method, %args );
haserror_response( $response )
Determines if the response is an error, and logs it appropriately.
Returns true if response is an error, false otherwise.
is_empty_response( $response )
Determines if the response is an empty hash or array reference.
Returns true if the response is empty, false otherwise.
postrequest( $params_hashref, $sig, $raw_data, $filename )
Used by "call" to post the request to the REST server and return the
response. $raw_data and $filename are used when uploading a photo or
video to Facebook.
_parse($string)
Parses the response from a call to the Facebook server to make it a
Perl data structure, and returns the result.
_parser()
Returns a new instance of JSON::Any.
reformatresponse( $params, $response )
Reformats the response according to whether the app is a desktop
app, if the response should be parsed (i.e., changed to a Perlish
structure), if the response is empty, etc. Returns the reformatted
response.
DIAGNOSTICS
"Unable to load JSON module for parsing: %s"
JSON::Any was not able to load one of the JSON modules it uses to
parse JSON. Please make sure you have one (of the several) JSON
modules it can use installed.
"Error during REST call: %s"
This means that there's most likely an error in the server you are
using to communicate to the Facebook REST server. Look at the
traceback to determine why an error was thrown. Double-check that
"server_uri" is set to the right location.
"Cannot create namespace %s: %s"
Cannot create the needed subclass method. Contact the developer to
report.
"Cannot create attribute %s: %s"
Cannot create the needed attribute method. Contact the developer to
report.
"<formatand_check_params must be called in list context!">
You're using a private method call and you're not calling it in list
context. It returns a list of items, all of which should be
interesting to you.
"Cannot open %s"
Cannot open the configuration file. Make sure the filename is
correct and that the program has the appropriate permissions.
"Cannot close %s"
Cannot close the configuration file. Make sure the filename is
correct and that the program has the appropriate permissions.
FAQ
Id numbers returned by Facebook are being rounded. What is the problem?
The JSON module that is installed on your system is converting the
numbers to Perl and is losing precision in the process. Make sure
you have the latest JSON::XS module installed or JSON::DWIW (any
recent version of either should work).
How do I run the examples in the examples directory?
There are two types of examples in the examples directory,
desktop-based and web-based. With desktop-based, the api key and
secret key are prompted for on STDIN, and then the user's browser is
opened and directed to the Facebook log in page. Currently, the
desktop-based examples pause for 20 seconds to allow for the user to
enter in their credentials.
With web-based, you have to pass in the api key, secret key, and app
path to the constructor, and then place the script at the callback
url you specified in the Facebook setup for your application. For
instance, when using the web-based example, you might have the
following callback url (note the trailing slash):
http://www.example.com/facebook-canvas-json/
You have to make sure the required Perl modules are in the @INC path
for the web server process, otherwise there will be a 500 Internal
Server error. The easiest way to do that is to put the following at
the top of the example script (as long as "path-to-perl5-libs" is
readable by the web server process):
use lib "path-to-perl5-libs";
I'm getting the "Multiple values for %s" error from WFA::Canvas. Help?
This usually means that your forms are using GET rather than POST to
Facebook URLs. Change your forms to use POST and the problem should
be resolved. (See RT#31620 and RT#31944 for more information).
CONFIGURATION AND ENVIRONMENT
WWW::Facebook::API requires no configuration files or environment variables.
DEPENDENCIES
version Crypt::SSLeay Digest::MD5 JSON::Any Time::HiRes LWP::UserAgent
INCOMPATIBILITIES
None.
BUGS AND LIMITATIONS
No bugs have been reported.
Please report any bugs or feature requests to "bug-www-facebook-api@rt.cpan.org", or through the web interface at <http://rt.cpan.org>.
SOURCE REPOSITORY
http://github.com/unobe/perl-wfa/tree/master
TESTING
There are some live tests included, but they are only run if the following environment variables are set: WFA_API_KEY_TEST WFA_SECRET_TEST WFA_SESSION_KEY_TEST
Additionally, if your app is a desktop one, you must set "WFA_DESKTOP_TEST". Also, the session key must be valid for the API key being used.
To enable POD coverage and POD formattings tests, set "PERL_TEST_POD" to true. To enable Perl::Critic tests, set "PERLTEST_CRITIC" to true.
AUTHOR
David Romano "<unobe@cpan.org>"
CONTRIBUTORS
Anthony Bouvier "none"
Clayton Scott "http://www.matrix.ca"
David Leadbeater "http://dgl.cx"
Derek Del Conte "derek@delconte.org"
Gisle Aas "none"
J. Shirley "<jshirley@gmail.com>"
Jim Spath "<jspath@gmail.com>"
Kevin Riggle "none"
Larry Mak "none"
Louis-Philippe "none"
Matt Sickler "<imMute@mail.msk3.ath.cx>"
Nick Gerakines "<nick@socklabs.com>"
Olaf Alders "<olaf@wundersolutions.com>"
Patrick Michael Kane "<pmk@wawd.com>"
Ryan D Johnson "ryan@innerfence.com"
Sean O'Rourke "<seano@cpan.org>"
Shawn Van Ittersum "none"
Simon Cavalletto "<simonm@cavalletto.org>"
Skyler Clark "none"
Thomas Sibley "<tsibley@cpan.org>"
LICENSE AND COPYRIGHT
Copyright (c) 2007-2010, David Romano "<unobe@cpan.org>". All rights reserved.
This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See perlartistic.
DISCLAIMER OF WARRANTY
BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE SOFTWARE, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE SOFTWARE "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH YOU. SHOULD THE SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR, OR CORRECTION.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE SOFTWARE AS PERMITTED BY THE ABOVE LICENSE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE SOFTWARE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE SOFTWARE TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.