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NAMENet::OAuth::Simple - a simple wrapper round the OAuth protocolSYNOPSISFirst create a sub class of "Net::OAuth::Simple" that will do you requests for you.package Net::AppThatUsesOAuth; use strict; use base qw(Net::OAuth::Simple); sub new { my $class = shift; my %tokens = @_; return $class->SUPER::new( tokens => \%tokens, protocol_version => '1.0a', urls => { authorization_url => ..., request_token_url => ..., access_token_url => ..., }); } sub view_restricted_resource { my $self = shift; my $url = shift; return $self->make_restricted_request($url, 'GET'); } sub update_restricted_resource { my $self = shift; my $url = shift; my %extra_params = @_; return $self->make_restricted_request($url, 'POST', %extra_params); } 1; Then in your main app you need to do # Get the tokens from the command line, a config file or wherever my %tokens = get_tokens(); my $app = Net::AppThatUsesOAuth->new(%tokens); # Check to see we have a consumer key and secret unless ($app->consumer_key && $app->consumer_secret) { die "You must go get a consumer key and secret from App\n"; } # If the app is authorized (i.e has an access token and secret) # Then look at a restricted resourse if ($app->authorized) { my $response = $app->view_restricted_resource; print $response->content."\n"; exit; } # Otherwise the user needs to go get an access token and secret print "Go to ".$app->get_authorization_url."\n"; print "Then hit return after\n"; <STDIN>; my ($access_token, $access_token_secret) = $app->request_access_token; # Now save those values Note the flow will be somewhat different for web apps since the request token and secret will need to be saved whilst the user visits the authorization url. For examples go look at the "Net::FireEagle" module and the "fireeagle" command line script that ships with it. Also in the same distribution in the "examples/" directory is a sample web app. METHODSnew [params]Create a new OAuth enabled app - takes a hash of params.One of the keys of the hash must be "tokens", the value of which must be a hash ref with the keys:
Then, when you have your per-use access token and secret you can supply
Another key of the hash must be "urls", the value of which must be a hash ref with the keys
If you pass in a key "protocol_version" with a value equal to 1.0a then the newest version of the OAuth protocol will be used. A value equal to 1.0 will mean the old version will be used. Defaults to 1.0a You can pass in your own User Agent by using the key "browser". If you pass in "return_undef_on_error" then instead of "die"-ing on error methods will return undef instead and the error can be retrieved using the "last_error()" method. See the section on ERROR HANDLING. oauth_1_0aWhether or not we're using 1.0a version of OAuth (necessary for, amongst others, FireEagle)authorizedWhether the client has the necessary credentials to be authorized.Note that the credentials may be wrong and so the request may still fail. signature_method [method]The signature method to use.Defaults to HMAC-SHA1 tokensGet all the tokens.consumer_key [consumer key]Returns the current consumer key.Can optionally set the consumer key. consumer_secret [consumer secret]Returns the current consumer secret.Can optionally set the consumer secret. access_token [access_token]Returns the current access token.Can optionally set a new token. access_token_secret [access_token_secret]Returns the current access token secret.Can optionally set a new secret. general_token [token]Get or set the general token.See documentation in "new()" general_token_secret [secret]Get or set the general token secret.See documentation in "new()" authorized_general_tokenIs the app currently authorized for general token requests.See documentation in "new()" request_token [request_token]Returns the current request token.Can optionally set a new token. request_token_secret [request_token_secret]Returns the current request token secret.Can optionally set a new secret. verifier [verifier]Returns the current oauth_verifier.Can optionally set a new verifier. callback [callback]Returns the oauth callback.Can optionally set the oauth callback. callback_confirmed [callback_confirmed]Returns the oauth callback confirmed.Can optionally set the oauth callback confirmed. authorization_urlGet the url the user needs to visit to authorize as a URI object.Note: this is the base url - not the full url with the necessary OAuth params. request_token_urlGet the url to obtain a request token as a URI object.access_token_urlGet the url to obtain an access token as a URI object.request_access_token [param[s]]Request the access token and access token secret for this user.The user must have authorized this app at the url given by "get_authorization_url" first. Returns the access token and access token secret but also sets them internally so that after calling this method you can immediately call a restricted method. If you pass in a hash of params then they will added as parameters to the URL. xauth_request_access_token [param[s]]The same as "request_access_token" but for xAuth.For more information on xAuth see http://apiwiki.twitter.com/Twitter-REST-API-Method%3A-oauth-access_token-for-xAuth You must pass in the parameters x_auth_username x_auth_password x_auth_mode You must have HTTPS enabled for LWP::UserAgent. See "examples/twitter_xauth" for a sample implementation. request_request_token [param[s]]Request the request token and request token secret for this user.This is called automatically by "get_authorization_url" if necessary. If you pass in a hash of params then they will added as parameters to the URL. get_authorization_url [param[s]]Get the URL to authorize a user as a URI object.If you pass in a hash of params then they will added as parameters to the URL. make_restricted_request <url> <HTTP method> [extra[s]]Make a request to "url" using the given HTTP method.Any extra parameters can be passed in as a hash. make_general_request <url> <HTTP method> [extra[s]]Make a request to "url" using the given HTTP method using the general purpose tokens.Any extra parameters can be passed in as a hash. last_errorGet the last error message.Only works if "return_undef_on_error" was passed in to the constructor. See the section on ERROR HANDLING. load_tokens <file>A convenience method for loading tokens from a config file.Returns a hash with the token names suitable for passing to "new()". Returns an empty hash if the file doesn't exist. save_tokens <file> [token[s]]A convenience method to save a hash of tokens out to the given file.ERROR HANDLINGOriginally this module would die upon encountering an error (inheriting behaviour from the original Yahoo! code).This is still the default behaviour however if you now pass return_undef_on_error => 1 into the constructor then all methods will return undef on error instead. The error message is accessible via the "last_error()" method. GOOGLE'S SCOPE PARAMETERGoogle's OAuth API requires the non-standard "scope" parameter to be set in "request_token_url", and you also explicitly need to pass an "oauth_callback" to "get_authorization_url()" method, so that you can direct the user to your site if you're authenticating users in Web Application mode. Otherwise Google will let user grant acesss as a desktop app mode and doesn't redirect users back.Here's an example class that uses Google's Portable Contacts API via OAuth: package Net::AppUsingGoogleOAuth; use strict; use base qw(Net::OAuth::Simple); sub new { my $class = shift; my %tokens = @_; return $class->SUPER::new( tokens => \%tokens, urls => { request_token_url => "https://www.google.com/accounts/OAuthGetRequestToken?scope=http://www-opensocial.googleusercontent.com/api/people", authorization_url => "https://www.google.com/accounts/OAuthAuthorizeToken", access_token_url => "https://www.google.com/accounts/OAuthGetAccessToken", }, ); } package main; my $oauth = Net::AppUsingGoogleOAuth->new(%tokens); # Web application $app->redirect( $oauth->get_authorization_url( callback => "http://you.example.com/oauth/callback") ); # Desktop application print "Open the URL and come back once you're authenticated!\n", $oauth->get_authorization_url; See <http://code.google.com/apis/accounts/docs/OAuth.html> and other services API documentation for the possible list of scope parameter value. RANDOMNESSIf "Math::Random::MT" is installed then any nonces generated will use a Mersenne Twiser instead of Perl's built in randomness function.EXAMPLESThere are example Twitter and Twitter xAuth 'desktop' apps and a FireEagle OAuth 1.0a web app in the examples directory of the distribution.BUGSNon knownDEVELOPERSThe latest code for this module can be found athttps://svn.unixbeard.net/simon/Net-OAuth-Simple AUTHORSimon Wistow, "<simon@thegestalt.org">BUGSPlease report any bugs or feature requests to "bug-net-oauth-simple at rt.cpan.org", or through the web interface at <http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Net-OAuth-Simple>. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.SUPPORTYou can find documentation for this module with the perldoc command.perldoc Net::OAuth::Simple You can also look for information at:
COPYRIGHT & LICENSECopyright 2009 Simon Wistow, all rights reserved.This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
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