perl-wfa

Perl's WWW::Facebook::API Module

2 years after

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', 'infinite_session', 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 _add_url_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.

_check_values_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.

_format_and_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->_format_and_check_params( $method, %args );

_has_error_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.

_post_request( $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.

_reformat_response( $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.

"<_format_and_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
"[email protected]", 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 "_PERL_TEST_CRITIC" to true.

AUTHOR David Romano "[email protected]"

CONTRIBUTORS Anthony Bouvier "none"

Clayton Scott "http://www.matrix.ca"

David Leadbeater "http://dgl.cx"

Derek Del Conte "[email protected]"

Gisle Aas "none"

J. Shirley "<[email protected]>"

Jim Spath "<[email protected]>"

Kevin Riggle "none"

Larry Mak "none"

Louis-Philippe "none"

Matt Sickler "<[email protected]>"

Nick Gerakines "<[email protected]>"

Olaf Alders "<[email protected]>"

Patrick Michael Kane "<[email protected]>"

Ryan D Johnson "[email protected]"

Sean O'Rourke "<[email protected]>"

Shawn Van Ittersum "none"

Simon Cavalletto "<[email protected]>"

Skyler Clark "none"

Thomas Sibley "<[email protected]>"

LICENSE AND COPYRIGHT Copyright (c) 2007-2010, David Romano "[email protected]". 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.

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