++ed by:
JROBINSON SREZIC SZABGAB LBMOORE

4 PAUSE users

Louis Moore

NAME

Flickr::API - Perl interface to the Flickr API

SYNOPSIS

Using OAuth to call a method not requiring authentication

  use Flickr::API;

  my $api = Flickr::API->new({
        'consumer_key'    => 'your_api_key',
        'consumer_secret' => 'your_app_secret',
    });

  my $response = $api->execute_method('flickr.test.echo', {
        'foo' => 'bar',
        'baz' => 'quux',
    });


  my $config_file = $HOME/saved-flickr.st;
  $api->export_storable_config($config_file);

Non-OAuth method calling method not requiring authentication

  use Flickr::API;

  my $api = Flickr::API->new({
        'key'    => 'your_api_key',
        'secret' => 'your_app_secret',
    });

  my $response = $api->execute_method('flickr.test.echo', {
        'foo' => 'bar',
        'baz' => 'quux',
    });

Alternatively, Using OAuth for non-authenticated request

  use Flickr::API;
  use Flickr::API::Request;

  my $api = Flickr::API->new({'consumer_key' => 'your_api_key','consumer_secret' => 'your_app_secret'});

  my $request = Flickr::API::Request->new({
        'method' => 'flickr.test.echo',
        'args' => {},
    });

  my $response = $api->execute_request($request);

Authenticate an OAuth API Object starting with saved configuration

  use Flickr::API;
  use Term::ReadLine;

  my $config_file = "$ENV{HOME}/saved-flickr.st";
  my $term   = Term::ReadLine->new('Testing Flickr::API');
  $term->ornaments(0);

  my $api = Flickr::API->import_storable_config($config_file);

  my $rt_rc =  $api->oauth_request_token( { 'callback' => 'https://127.0.0.1/' } );

  my %request_token;
  if ( $rt_rc eq 'ok' ) {

      my $uri = $api->oauth_authorize_uri({ 'perms' => 'read' });

      my $prompt = "\n\n$uri\n\n" .
          "Copy the above url to a browser, and authenticate with Flickr\n" .
          "Press [ENTER] once you get the redirect: ";
      my $input = $term->readline($prompt);

      $prompt = "\n\nCopy the redirect URL from your browser and enter it\nHere: ";
      $input = $term->readline($prompt);

      chomp($input);

      my ($callback_returned,$token_received) = split(/\?/,$input);
      my (@parms) = split(/\&/,$token_received);
      foreach my $pair (@parms) {

          my ($key,$val) = split(/=/,$pair);
          $key =~ s/oauth_//;
          $request_token{$key}=$val;

      }
  }

  my $ac_rc = $api->oauth_access_token(\%request_token);
  if ( $ac_rc eq 'ok' ) {

      $api->export_storable_config($config_file);

      my $response = $api->execute_method('flickr.auth.oauth.checkToken');
      my $hash_ref = $response->as_hash();

      $response    = $api->execute_method('flickr.prefs.getPrivacy');
      my $rsp_node = $response->as_tree();
  }

The OAuth authorization uri will look something like:

  https://api.flickr.com/services/oauth/authorize?oauth_token=12345678901234567-890abcdefedcba98&perms=read

The callback is called with a token and verifier such as:

  https://127.0.0.1/?oauth_token=12345678901234567-890abcdefedcba98&oauth_verifier=cafe12345678feed

DESCRIPTION

An interface for using the Flickr API.

Flickr::API is a subclass of LWP::UserAgent, so all of the various proxy, request limits, caching, etc are available. Flickr::API can instantiate using either the Flickr Authentication (deprecated) or the OAuth Authentication. OAuth is handled using Net::OAuth.

SUBROUTINES/METHODS

new({ opt => 'value', ... })

Returns as new Flickr::API object. The options are as follows:

either key for the Flickr auth or consumer_key for OAuth

Your API key (one or the other form is required)

either secret for the Flickr auth or consumer_secret for OAuth

Your API key's secret (the one matching the key/consumer_key is required)

rest_uri & auth_uri

Override the URIs used for contacting the API.

lwpobj

Base the Flickr::API on this object, instead of creating a new instance of LWP::UserAgent. This is useful for using the features of e.g. LWP::UserAgent::Cached.

unicode

This flag controls whether Flickr::API expects you to pass UTF-8 bytes (unicode=0, the default) or actual unicode strings (unicode=1) in the request.

nonce, timestamp, request_method, signature_method, request_url

These values are used by Net::OAuth to assemble and sign OAuth consumer request Flickr API calls. The defaults are usually fine.

callback

The callback is used in oauth authentication. When Flickr authorizes you, it returns the access token and access token secret in a callback URL. This defaults to https://127.0.0.1/

token and token_secret

These values are used by Net::OAuth to assemble and sign OAuth protected resource request Flickr API calls.

execute_method($method, $args)

Constructs a Flickr::API::Request object and executes it, returning a Flickr::API::Response object.

execute_request($request)

Executes a Flickr::API::Request object, returning a Flickr::API::Response object. Calls are signed if a secret was specified when creating the Flickr::API object.

request_auth_url($perms,$frob)

Returns a URI object representing the URL that an application must redirect a user to for approving an authentication token.

$perms must be read, write, or delete.

For web-based applications $frob is an optional parameter.

Returns undef if a secret was not specified when creating the Flickr::API object.

export_config([$type,$params])

Returns a hash of all or part of the persistent parts of the Flickr::API object with additional behaviors for Flickr::API objects using OAuth.

oauth message type: one of Consumer, Protected Resource, Request Token, Authorize User or Access Token

This is one of the the message type that Net::OAuth handles. Message type is optional.

oauth parameter set: message or API or undef.

Net::OAuth will return message params, api params or all params depending on what is requested. All params is the default.

If the Flickr::API object identifies as Flickr original authentication, return a hashref

  $VAR1 = {
            'frob' => '12332112332112300-feedabcde123456c-1234567',
            'key' => 'cafefeedbeef13579246801234567890',
            'secret' => 'beef321432154321',
            'token' => '97531086421234567-cafe123456789abc'
          };

or the subset thereof depending on what has been used by the API.

If the API object identifies as OAuth authentication, and message type is specified, then export_config will return a hash of the OAuth parameters for the specified Net::OAuth message type. Further, if parameter is specified, then export_config returns either either the set of message parameters or api parameters for the message type. If parameter is not specified then both parameter type are returned. For example:

  my %config = $api->export_config('protected resource');

or

  my %config = $api->export_config('protected resource','message');

When export_config is called without arguments, then it returns the OAuth portion of the Flickr::API object. If present the Net::OAuth Request Token and Access Token objects are also included.

  VAR1 = {
            'access_token' => bless( {
                                       'extra_params' => {
                                                           'fullname' => 'Louis',
                                                           'user_nsid' => '12345678@N00',
                                                           'username' => 'meanameicallmyself'
                                                         },
                                       'from_hash' => 1,
                                       'token' => '12345678901234567-cafe123098765432',
                                       'token_secret' => 'eebeef000fedbca1'
                                     }, 'Net::OAuth::AccessTokenResponse' ),
            'callback' => 'https://127.0.0.1',
            'consumer_key' => 'cafefeedbeef13579246801234567890',
            'consumer_secret' => 'fedcba9876543210',
            'nonce' => '917fa882fa7babd5a1b7702e7d19502a',
            'request_method' => 'GET',
            'request_url' => 'https://api.flickr.com/services/rest/',
            'signature_method' => 'HMAC-SHA1',
            'timestamp' => 1436129308,
            'token' => '12345678901234567-cafe123098765432',
            'token_secret' => 'eebeef000fedbca1',
            'version' => '1.0'
          };

  my %config = $api->export_config();

This method can be used to extract and save the API parameters for future use.

export_storable_config(filename)

This method wraps export_config with a file open and storable store_fd to add some persistence to a Flickr::API object.

import_storable_config(filename)

This method retrieves a storable config of a Flickr::API object and revivifies the object.

get_oauth_request_type()

Returns the oauth request type in the Flickr::API object. Some Flickr methods will require a protected resource request type and others a simple consumer request type.

oauth_request_token(\%args)

Assembles, signs, and makes the OAuth Request Token call, and if sucessful stores the Net::OAuth Request Token in the Flickr::API object.

The required parameters are:

consumer_key

Your API Key

consumer_secret

Your API Key's secret

request_method

The URI Method: GET or POST

request_url

Defaults to: https://api.flickr.com/services/oauth/request_token

flickr_access_token

The required parameters are:

key
oauth_access_token(\%args)

Assembles, signs, and makes the OAuth Access Token call, and if sucessful stores the Net::OAuth Access Token in the Flickr::API object.

The required parameters are:

consumer_key

Your API Key

consumer_secret

Your API Key's secret

request_method

The URI Method: GET or POST

request_url

Defaults to: https://api.flickr.com/services/oauth/access_token

token_secret

The request token secret from the Net::OAuth Request Token object returned from the oauth_request_token call.

oauth_authorize_uri(\%args)

Returns a URI object representing the URL that an application must redirect a user to for approving a request token.

perms

Permission the application is requesting, one of read, write, or delete, defaults to read.

is_oauth

Returns 1 if the Flickr::API object is OAuth flavored, 0 otherwise.

AUTHOR

Cal Henderson, <cal@iamcal.com>

Auth API patches provided by Aaron Straup Cope

Subclassing patch from AHP

OAuth patches and additions Louis B. Moore <lbmoore@cpan.org>

LICENSE AND COPYRIGHT

Copyright (C) 2004-2013, Cal Henderson, <cal@iamcal.com>

OAuth patches and additions Copyright (C) 2014-2015 Louis B. Moore <lbmoore@cpan.org>

This program is released under the Artistic License 2.0 by The Perl Foundation.

SEE ALSO

Flickr::API::Request, Flickr::API::Response, Net::OAuth, XML::Parser::Lite, Flickr, http://www.flickr.com/services/api/ https://www.flickr.com/services/api/auth.oauth.html https://github.com/iamcal/perl-Flickr-API