/usr/share/perl5/Flickr/API.pm is in libflickr-api-perl 1.28-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 | package Flickr::API;
use strict;
use warnings;
use LWP::UserAgent;
use XML::Parser::Lite::Tree;
use XML::LibXML::Simple;
use Flickr::API::Request;
use Flickr::API::Response;
use Net::OAuth;
use Digest::MD5 qw(md5_hex);
use Scalar::Util qw(blessed);
use Encode qw(encode_utf8);
use Carp;
use Storable qw(store_fd retrieve_fd);
our @ISA = qw(LWP::UserAgent);
our $VERSION = '1.28';
sub new {
my ($class, $args) = @_;
my $self;
if ($args->{lwpobj}){
my $lwpobj = $args->{lwpobj};
if (defined($lwpobj)){
my $lwpobjtype = Scalar::Util::blessed($lwpobj);
if (defined($lwpobjtype)){
$self = $lwpobj;
@ISA = ($lwpobjtype);
}
}
}
$self = LWP::UserAgent->new unless $self;
#
# If the args have consumer_key, handle as oauth
#
if (defined($args->{consumer_key})) {
$self->{api_type} = 'oauth';
$self->{rest_uri} = $args->{rest_uri} || 'https://api.flickr.com/services/rest/';
$self->{auth_uri} = $args->{auth_uri} || 'https://api.flickr.com/services/oauth/authorize';
$self->{upload_uri} = $args->{upload_uri} || 'https://api.flickr.com/services/upload/';
if (defined($args->{consumer_secret})) {
#
# for the flickr api object
#
$self->{oauth_request} = 'consumer';
$self->{consumer_key} = $args->{consumer_key};
$self->{consumer_secret} = $args->{consumer_secret};
$self->{unicode} = $args->{unicode} || 0;
#
# for Net::OAuth Consumer Requests
#
$self->{oauth}->{request_method} = $args->{request_method} || 'GET';
$self->{oauth}->{request_url} = $self->{rest_uri};
$self->{oauth}->{consumer_secret} = $args->{consumer_secret};
$self->{oauth}->{consumer_key} = $args->{consumer_key};
$self->{oauth}->{nonce} = $args->{nonce} || _make_nonce();
$self->{oauth}->{signature_method} = $args->{signature_method} ||'HMAC-SHA1';
$self->{oauth}->{timestamp} = $args->{timestamp} || time;
$self->{oauth}->{version} = '1.0';
$self->{oauth}->{callback} = $args->{callback};
}
else {
carp "OAuth calls must have at least a consumer_key and a consumer_secret";
$self->_set_status(0,"OAuth call without consumer_secret");
}
if (defined($args->{token}) && defined($args->{token_secret})) {
#
# If we have token/token secret then we are for protected resources
#
$self->{oauth}->{token_secret} = $args->{token_secret};
$self->{oauth}->{token} = $args->{token};
$self->{oauth_request} = 'protected resource';
}
#
# Preserve request and access tokens
#
if (defined($args->{request_token}) and
ref($args->{request_token}) eq 'Net::OAuth::V1_0A::RequestTokenResponse') {
$self->{oauth}->{request_token} = $args->{request_token};
}
if (defined($args->{access_token}) and
ref($args->{access_token}) eq 'Net::OAuth::AccessTokenResponse') {
$self->{oauth}->{access_token} = $args->{access_token};
}
}
else {
$self->{api_type} = 'flickr';
$self->{api_key} = $args->{api_key} || $args->{key};
$self->{api_secret} = $args->{api_secret} || $args->{secret};
$self->{rest_uri} = $args->{rest_uri} || 'https://api.flickr.com/services/rest/';
$self->{auth_uri} = $args->{auth_uri} || 'https://api.flickr.com/services/auth/';
$self->{upload_uri} = $args->{upload_uri} || 'https://api.flickr.com/services/upload/';
$self->{unicode} = $args->{unicode} || 0;
if (defined($args->{key}) or defined ($self->{key})) {
delete $args->{key};
delete $self->{key};
# Silenty switch key to api_key until a later release
# carp "Argument 'key' is deprecated and has been changed to api_key";
}
if (defined ($args->{secret}) or defined ($self->{secret})) {
delete $args->{secret};
delete $self->{secret};
# Silenty switch secret to api_secret until a later release
# carp "Argument 'secret' is deprecated and has been changed to api_secret";
}
$self->{fauth}->{frob} = $args->{frob};
$self->{fauth}->{api_key} = $self->{api_key};
$self->{fauth}->{api_secret} = $self->{api_secret};
$self->{fauth}->{token} = $args->{token};
carp "You must pass an API key or a Consumer key to the constructor" unless defined $self->{api_key};
}
eval {
require Compress::Zlib;
$self->default_header('Accept-Encoding' => 'gzip');
};
bless $self, $class;
$self->_clear_status();
$self->_initialize();
return $self;
}
#
# Execution Methods
#
sub execute_method {
my ($self, $method, $args) = @_;
my $request;
if ($self->is_oauth) {
#
# Consumer Request Params
#
my $oauth = {};
$oauth->{nonce} = _make_nonce();
$oauth->{consumer_key} = $self->{oauth}->{consumer_key};
$oauth->{consumer_secret} = $self->{oauth}->{consumer_secret};
$oauth->{timestamp} = time;
$oauth->{signature_method} = $self->{oauth}->{signature_method};
$oauth->{version} = $self->{oauth}->{version};
if (defined($args->{'token'}) or defined($args->{'token_secret'})) {
carp "\ntoken and token_secret must be specified in Flickr::API->new() and are being discarded\n";
undef $args->{'token'};
undef $args->{'token_secret'};
}
if (defined($args->{'consumer_key'}) or defined($args->{'consumer_secret'})) {
carp "\nconsumer_key and consumer_secret must be specified in Flickr::API->new() and are being discarded\n";
undef $args->{'consumer_key'};
undef $args->{'consumer_secret'};
}
$oauth->{extra_params} = $args;
$oauth->{extra_params}->{method} = $method;
#
# Protected resource params
#
if (defined($self->{oauth}->{token})) {
$oauth->{token} = $self->{oauth}->{token};
$oauth->{token_secret} = $self->{oauth}->{token_secret};
}
$request = Flickr::API::Request->new({
'api_type' => 'oauth',
'method' => $method,
'args' => $oauth,
'rest_uri' => $self->{rest_uri},
'unicode' => $self->{unicode},
});
}
else {
$request = Flickr::API::Request->new({
'api_type' => 'flickr',
'method' => $method,
'args' => $args,
'rest_uri' => $self->{rest_uri},
'unicode' => $self->{unicode},
});
}
return $self->execute_request($request);
}
sub execute_request {
my ($self, $request) = @_;
$request->{api_args}->{method} = $request->{api_method};
unless ($self->is_oauth) { $request->{api_args}->{api_key} = $self->{api_key}; }
if (defined($self->{api_secret}) && length($self->{api_secret})) {
unless ($self->is_oauth) { $request->{api_args}->{api_sig} = $self->_sign_args($request->{api_args}); }
}
unless ($self->is_oauth) { $request->encode_args(); }
my $response = $self->request($request);
bless $response, 'Flickr::API::Response';
$response->init_flickr();
if ($response->{_rc} != 200){
$response->set_fail(0, "API returned a non-200 status code ($response->{_rc})");
return $response;
}
my $content = $response->decoded_content();
$content = $response->content() unless defined $content;
my $xls = XML::LibXML::Simple->new(ForceArray => 0);
my $tree = XML::Parser::Lite::Tree::instance()->parse($content);
my $hashref = $xls->XMLin($content,KeyAttr => []);
my $rsp_node = $self->_find_tag($tree->{children});
if ($rsp_node->{name} ne 'rsp'){
$response->set_fail(0, "API returned an invalid response");
return $response;
}
if ($rsp_node->{attributes}->{stat} eq 'fail'){
my $fail_node = $self->_find_tag($rsp_node->{children});
if ($fail_node->{name} eq 'err'){
$response->set_fail($fail_node->{attributes}->{code}, $fail_node->{attributes}->{msg});
}
else {
$response->set_fail(0, "Method failed but returned no error code");
}
return $response;
}
if ($rsp_node->{attributes}->{stat} eq 'ok'){
$response->set_ok($rsp_node,$hashref);
return $response;
}
$response->set_fail(0, "API returned an invalid status code");
return $response;
}
sub upload {
my ($self, $args) = @_;
my $upload;
unless ($self->api_permissions() eq 'write' || $self->api_permissions() eq 'delete') {
croak "insufficient permission for upload";
}
my %cfg = $self->export_config;
$cfg{'request_url'} = $self->{upload_uri};
$upload = Flickr::API::Upload->new({
'photo' => $args,
'api' => \%cfg,
'api_type' => $self->api_type(),
});
my $response = $self->request($upload);
bless $response, 'Flickr::API::Response';
$response->init_flickr();
if ($response->{_rc} != 200){
$response->set_fail(0, "Upload returned a non-200 status code ($response->{_rc})");
return $response;
}
my $content = $response->decoded_content();
$content = $response->content() unless defined $content;
my $xls = XML::LibXML::Simple->new(ForceArray => 0);
my $tree = XML::Parser::Lite::Tree::instance()->parse($content);
my $hashref = $xls->XMLin($content,KeyAttr => []);
my $rsp_node = $self->_find_tag($tree->{children});
if ($rsp_node->{name} ne 'rsp'){
$response->set_fail(0, "Upload returned an invalid response");
return $response;
}
if ($rsp_node->{attributes}->{stat} eq 'fail'){
my $fail_node = $self->_find_tag($rsp_node->{children});
if ($fail_node->{name} eq 'err'){
$response->set_fail($fail_node->{attributes}->{code}, $fail_node->{attributes}->{msg});
}
else {
$response->set_fail(0, "Upload failed but returned no error code");
}
return $response;
}
if ($rsp_node->{attributes}->{stat} eq 'ok'){
$response->set_ok($rsp_node,$hashref);
return $response;
}
$response->set_fail(0, "API returned an invalid status code");
return $response;
}
#
# Persistent config methods
#
#
# Method to return hash of important Flickr or OAuth parameters.
# OAuth can also export meaningful subsets of parameters based
# on OAuth message type.
#
sub export_config {
my ($self, $type, $params) = @_;
if ($self->is_oauth) {
unless($params) { $params='do_it'; }
my %oauth;
if (defined($type)) {
if ($params =~ m/^m.*/i) {
%oauth = map { ($_) => undef } @{Net::OAuth->request($type)->all_message_params()};
}
elsif ($params =~ m/^a.*/i) {
%oauth = map { ($_) => undef } @{Net::OAuth->request($type)->all_api_params()};
}
else {
%oauth = map { ($_) => undef } @{Net::OAuth->request($type)->all_params()};
}
foreach my $param (keys %oauth) {
if (defined ($self->{oauth}->{$param})) { $oauth{$param} = $self->{oauth}->{$param}; }
}
return %oauth;
}
else {
return %{$self->{oauth}};
}
}
else {
return %{$self->{fauth}};
}
}
#
# Use perl core Storable to save important parameters.
#
sub export_storable_config {
my ($self,$file) = @_;
open my $EXPORT, '>', $file or croak "\nCannot open $file for write: $!\n";
my %config = $self->export_config();
store_fd(\%config, $EXPORT);
close $EXPORT;
return;
}
#
# Use perl core Storable for re-vivifying an API object from saved parameters
#
sub import_storable_config {
my ($class,$file) = @_;
open my $IMPORT, '<', $file or croak "\nCannot open $file for read: $!\n";
my $config_ref = retrieve_fd($IMPORT);
close $IMPORT;
my $api = $class->new($config_ref);
return $api;
}
#
# Preauthorization Methods
#
# Handle request token requests (process: REQUEST TOKEN, authorize, access token)
#
sub oauth_request_token {
my ($self, $args) = @_;
my %oauth = %{$self->{oauth}};
unless ($self->is_oauth) {
carp "\noauth_request_token called for Non-OAuth Flickr::API object\n";
return;
}
unless ($self->get_oauth_request_type() eq 'consumer') {
croak "\noauth_request_token called using protected resource Flickr::API object\n";
}
$self->{oauth_request} = 'Request Token';
$oauth{request_url} = $args->{request_token_url} || 'https://api.flickr.com/services/oauth/request_token';
$oauth{callback} = $args->{callback} || 'https://127.0.0.1';
$Net::OAuth::PROTOCOL_VERSION = Net::OAuth::PROTOCOL_VERSION_1_0A;
my $orequest = Net::OAuth->request('Request Token')->new(%oauth);
$orequest->sign;
my $response = $self->get($orequest->to_url);
my $content = $response->decoded_content();
$content = $response->content() unless defined $content;
if ($content =~ m/^oauth_problem=(.+)$/) {
carp "\nRequest token not granted: '",$1,"'\n";
$self->{oauth}->{request_token} = $1;
return $1;
}
$self->{oauth}->{request_token} = Net::OAuth->response('request token')->from_post_body($content);
$self->{oauth}->{callback} = $oauth{callback};
return 'ok';
}
#
# Participate in authorization (process: request token, AUTHORIZE, access token)
#
sub oauth_authorize_uri {
my ($self, $args) = @_;
unless ($self->is_oauth) {
carp "oauth_authorize_uri called for Non-OAuth Flickr::API object";
return;
}
my %oauth = %{$self->{oauth}};
$self->{oauth_request} = 'User Authentication';
$oauth{perms} = lc($args->{perms}) || 'read';
carp "\nThe 'perms' parameter must be one of: read, write, delete\n"
and return unless defined($oauth{perms}) && $oauth{perms} =~ /^(read|write|delete)$/;
$Net::OAuth::PROTOCOL_VERSION = Net::OAuth::PROTOCOL_VERSION_1_0A;
return $self->{auth_uri} .
'?oauth_token=' . $oauth{'request_token'}{'token'} .
'&perms=' . $oauth{perms};
}
#
# flickr preauthorization
#
sub request_auth_url {
my ($self, $perms, $frob) = @_;
if ($self->is_oauth) {
carp "request_auth_url called for an OAuth instantiated Flickr::API";
return;
}
$perms = lc($perms);
carp "\nThe 'perms' parameter must be one of: read, write, delete\n"
and return unless defined($perms) && $perms =~ /^(read|write|delete)$/;
return unless defined $self->{api_secret} && length $self->{api_secret};
my %fauth = (
'api_key' => $self->{api_key},
'perms' => $perms
);
if ($frob) {
$fauth{frob} = $frob;
}
my $sig = $self->_sign_args(\%fauth);
$fauth{api_sig} = $sig;
my $uri = URI->new($self->{auth_uri});
$uri->query_form(%fauth);
return $uri;
}
#
# Access Token (post authorization) Methods
#
# Handle access token requests (process: request token, authorize, ACCESS TOKEN)
#
sub oauth_access_token {
my ($self, $args) = @_;
unless ($self->is_oauth) {
carp "oauth_access_token called for Non-OAuth Flickr::API object";
return;
}
if ($args->{token} ne $self->{oauth}->{request_token}->{token}) {
carp "Request token in API does not match token for access token request";
return;
}
#
# Stuff the values for the Net::OAuth factory
#
$self->{oauth}->{verifier} = $args->{verifier};
$self->{oauth}->{token} = $args->{token};
$self->{oauth}->{token_secret} = $self->{oauth}->{request_token}->{token_secret};
my %oauth = %{$self->{oauth}};
$oauth{request_url} = $args->{access_token_url} || 'https://api.flickr.com/services/oauth/access_token';
$Net::OAuth::PROTOCOL_VERSION = Net::OAuth::PROTOCOL_VERSION_1_0A;
my $request = Net::OAuth->request('Access Token')->new(%oauth);
$request->sign;
my $response = $self->get($request->to_url);
my $content = $response->decoded_content();
$content = $response->content() unless defined $content;
if ($content =~ m/^oauth_problem=(.+)$/) {
carp "\nAccess token not granted: '",$1,"'\n";
$self->{oauth}->{access_token} = $1;
delete $self->{oauth}->{token}; # Not saving problematic request token
delete $self->{oauth}->{token_secret}; # token secret
delete $self->{oauth}->{verifier}; # and verifier copies
return $1;
}
$self->{oauth}->{access_token} = Net::OAuth->response('access token')->from_post_body($content);
$self->{oauth}->{token} = $self->{oauth}->{access_token}->token();
$self->{oauth}->{token_secret} = $self->{oauth}->{access_token}->token_secret();
delete $self->{oauth}->{request_token}; #No longer valid, anyway
delete $self->{oauth}->{verifier};
return 'ok';
}
sub flickr_access_token {
my ($self,$frob) = @_;
my $rsp = $self->execute_method('flickr.auth.getToken', {api_key => $self->{api_key}, frob => $frob });
my $response_ref = $rsp->as_hash();
$self->{fauth}->{frob} = $frob;
$self->{token} = $response_ref->{auth}->{token};
$self->{fauth}->{token} = $response_ref->{auth}->{token};
$self->{fauth}->{user} = $response_ref->{auth}->{user};
return $response_ref->{stat};
}
#
# Utility methods
#
sub is_oauth {
my ($self) = @_;
if (defined $self->{api_type} and $self->{api_type} eq 'oauth') {
return 1;
}
else {
return 0;
}
}
sub get_oauth_request_type {
my ($self) = @_;
if (defined $self->{api_type} and $self->{api_type} eq 'oauth') {
return $self->{oauth_request};
}
else {
return;
}
}
sub api_type {
my ($self) = @_;
return $self->{api_type};
}
sub api_success {
my ($self) = @_;
return $self->{flickr}->{status}->{api_success};
}
sub api_message {
my ($self) = @_;
return $self->{flickr}->{status}->{api_message};
}
sub api_permissions {
my ($self) = @_;
my $rsp;
my $check;
my $retval;
if ($self->is_oauth) {
if (defined($self->{oauth}->{perms})) {
$self->_set_status(1,"Permissions retrieved from config.");
}
else {
$self->{oauth}->{perms} = 'none'; #preload no perms
$rsp = $self->execute_method('flickr.auth.oauth.checkToken');
if (!$rsp->success()) {
$rsp->_propagate_status($self->{flickr}->{status});
carp "\nUnable to validate OAuth token. Flickr error: ",
$self->{flickr}->{status}->{error_code}," - \"",
$self->{flickr}->{status}->{error_message},"\" \n";
delete $self->{oauth}->{perms};
$self->_set_status(0,"Unable to validate OAuth token, Flickr API call not successful.");
}
else {
$check = $rsp->as_hash();
$self->{oauth}->{perms} = $check->{oauth}->{perms};
$self->_set_status(1,"Permissions retrieved from Flickr.");
}
} # else not cached
$retval = $self->{oauth}->{perms};
} # is_oauth
else { # is_flickr
if (defined($self->{fauth}->{perms})) {
$self->_set_status(1,"Permissions retrieved from config.");
}
else {
$self->{fauth}->{perms} = 'none'; #preload no perms
$rsp = $self->execute_method('flickr.auth.checkToken',{'auth_token' => $self->{fauth}->{token}});
if (!$rsp->success()) {
$rsp->_propagate_status($self->{flickr}->{status});
carp "\nUnable to validate Flickr token. Flickr error: ",
$self->{flickr}->{status}->{error_code}," - \"",
$self->{flickr}->{status}->{error_message},"\" \n";
delete $self->{fauth}->{perms};
$self->_set_status(0,"Unable to validate Flickr token, Flickr API call not successful.");
}
else {
$check = $rsp->as_hash();
$self->{fauth}->{perms} = $check->{auth}->{perms};
$self->_set_status(1,"Permissions retrieved from Flickr.");
}
} # else not cached
$retval = $self->{fauth}->{perms};
} # else is_flickr
return $retval;
}
#
# Private methods
#
sub _sign_args {
my ($self, $args) = @_;
if ($self->is_oauth) {
carp "_sign_args called for an OAuth instantiated Flickr::API";
return;
}
my $sig = $self->{api_secret};
foreach my $key (sort {$a cmp $b} keys %{$args}) {
my $value = (defined($args->{$key})) ? $args->{$key} : "";
$sig .= $key . $value;
}
return md5_hex(encode_utf8($sig)) if $self->{unicode};
return md5_hex($sig);
}
sub _find_tag {
my ($self, $children) = @_;
for my $child(@{$children}){
return $child if $child->{type} eq 'element';
}
return {};
}
sub _make_nonce {
return md5_hex(rand);
}
sub _export_api {
my ($self) = @_;
my $api = {};
$api->{oauth} = $self->{oauth};
$api->{fauth} = $self->{fauth};
$api->{flickr} = $self->{flickr};
$api->{api_type} = $self->{api_type};
$api->{api_key} = $self->{api_key};
$api->{api_secret} = $self->{api_secret};
$api->{rest_uri} = $self->{rest_uri};
$api->{unicode} = $self->{unicode};
$api->{auth_uri} = $self->{auth_uri};
$api->{upload_uri} = $self->{upload_uri};
return $api;
}
sub _initialize {
my ($self) = @_;
$self->_set_status(1,'Base API initialized');
return;
}
sub _full_status {
my ($self) = @_;
return $self->{flickr}->{status};
}
sub _clear_status {
my ($self) = @_;
# the API status
$self->_set_status(1,'');
# the propagated response status
$self->{flickr}->{status}->{_rc} = 0;
$self->{flickr}->{status}->{success} = 1; # initialize as successful
$self->{flickr}->{status}->{error_code} = 0;
$self->{flickr}->{status}->{error_message} = '';
return;
}
sub _set_status {
my ($self, $good, $msg) = @_;
if ($good != 0) { $good = 1; }
$self->{flickr}->{status}->{api_success} = $good;
$self->{flickr}->{status}->{api_message} = $msg;
return;
}
1;
__END__
=head1 NAME
Flickr::API - Perl interface to the Flickr API
=head1 SYNOPSIS
=head2 Using OAuth to call a B<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);
=head2 Non-OAuth method calling B<method> not requiring authentication
use Flickr::API;
# key deprecated in favor of api_key
# secret deprecated in favor of api_secret
#
my $api = Flickr::API->new({
'api_key' => 'your_api_key',
'api_secret' => 'your_app_secret',
});
my $response = $api->execute_method('flickr.test.echo', {
'foo' => 'bar',
'baz' => 'quux',
});
=head2 Alternatively, Using OAuth for non-authenticated B<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);
=head2 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();
}
=head2 The OAuth authorization uri will look something like:
https://api.flickr.com/services/oauth/authorize?oauth_token=12345678901234567-890abcdefedcba98&perms=read
=head2 The callback is called with a token and verifier such as:
https://127.0.0.1/?oauth_token=12345678901234567-890abcdefedcba98&oauth_verifier=cafe12345678feed
=head1 DESCRIPTION
An interface for using the Flickr API.
C<Flickr::API> is a subclass of L<LWP::UserAgent>, so all of the various
proxy, request limits, caching, etc are available. C<Flickr::API> can
instantiate using either the Flickr Authentication (deprecated) or the
OAuth Authentication. OAuth is handled using L<Net::OAuth>.
=head1 SUBROUTINES/METHODS
=over
=item C<new({ opt =E<gt> 'value', ... })>
Returns as new L<Flickr::API> object. The options are as follows:
=over
=item either C<api_key> for the Flickr auth or C<consumer_key> for OAuth
Your API key (one or the other form is required)
=item either C<api_secret> for the Flickr auth or C<consumer_secret> for OAuth
Your API key's secret (the one matching the api_key/consumer_key is required)
=item C<rest_uri> & C<auth_uri>
Override the URIs used for contacting the API.
=item C<lwpobj>
Base the C<Flickr::API> on this object, instead of creating a new instance of L<LWP::UserAgent>.
This is useful for using the features of e.g. L<LWP::UserAgent::Cached>.
=item C<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.
=item C<nonce>, C<timestamp>, C<request_method>, C<signature_method>, C<request_url>
These values are used by L<Net::OAuth> to assemble and sign OAuth I<consumer> request
Flickr API calls. The defaults are usually fine.
=item C<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/
=item C<token> and C<token_secret>
These values are used by L<Net::OAuth> to assemble and sign OAuth I<protected resource> request
Flickr API calls.
=back
=item C<execute_method($method, $args)>
Constructs a L<Flickr::API::Request> object and executes it, returning a L<Flickr::API::Response> object.
=item C<execute_request($request)>
Executes a L<Flickr::API::Request> object, returning a L<Flickr::API::Response> object. Calls are signed
if a secret was specified when creating the L<Flickr::API> object.
=item C<request_auth_url($perms,$frob)>
Returns a L<URI> object representing the URL that an application must redirect a user to for approving
an authentication token.
C<$perms> must be B<read>, B<write>, or B<delete>.
For web-based applications I<$frob> is an optional parameter.
Returns undef if a secret was not specified when creating the C<Flickr::API> object.
=item C<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.
=over
=item oauth message type: one of C<Consumer>, C<Protected Resource>, C<Request Token>, C<Authorize User> or C<Access Token>
This is one of the the message type that L<Net::OAuth> handles. Message type is optional.
=item oauth parameter set: C<message> or C<API> or undef.
L<Net::OAuth> will return message params, api params or all params depending on what is requested.
All params is the default.
=back
If the Flickr::API object identifies as Flickr original authentication, return a
hashref
$VAR1 = {
'frob' => '12332112332112300-feedabcde123456c-1234567',
'api_key' => 'cafefeedbeef13579246801234567890',
'api_secret' => 'beef321432154321',
'token' => '97531086421234567-cafe123456789abc'
};
or the subset thereof depending on what has been used by the API. If the older form
of key/secret was used, the constructor will change these to the api_key/api_secret
forms.
If the API object identifies as OAuth authentication, and C<message type> is
specified, then export_config will return a hash of the OAuth parameters for
the specified L<Net::OAuth> message type. Further, if parameter is specified,
then export_config returns either either the set of B<message> parameters or
B<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 L<Flickr::API> object. If present the L<Net::OAuth> I<Request Token>
and I<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();
=back
This method can be used to extract and save the API parameters for
future use.
=over
=item C<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.
=item C<import_storable_config(filename)>
This method retrieves a storable config of a Flickr::API object
and revivifies the object.
=item C<get_oauth_request_type()>
Returns the oauth request type in the Flickr::API object. Some Flickr methods
will require a C<protected resource> request type and others a simple C<consumer>
request type.
=item C<oauth_request_token(\%args)>
Assembles, signs, and makes the OAuth B<Request Token> call, and if sucessful
stores the L<Net::OAuth> I<Request Token> in the L<Flickr::API> object.
The required parameters are:
=over
=item C<consumer_key>
Your API Key
=item C<consumer_secret>
Your API Key's secret
=item C<request_method>
The URI Method: GET or POST
=item C<request_url>
Defaults to: L<https://api.flickr.com/services/oauth/request_token>
=back
=item C<flickr_access_token>
The required parameters are:
=over
=item C<key>
=back
=item C<oauth_access_token(\%args)>
Assembles, signs, and makes the OAuth B<Access Token> call, and if sucessful
stores the L<Net::OAuth> I<Access Token> in the L<Flickr::API> object.
The required parameters are:
=over
=item C<consumer_key>
Your API Key
=item C<consumer_secret>
Your API Key's secret
=item C<request_method>
The URI Method: GET or POST
=item C<request_url>
Defaults to: L<https://api.flickr.com/services/oauth/access_token>
=item C<token_secret>
The request token secret from the L<Net::OAuth> I<Request Token> object
returned from the I<oauth_request_token> call.
=back
=item C<oauth_authorize_uri(\%args)>
Returns a L<URI> object representing the URL that an application must redirect a user to for approving
a request token.
=over
=item C<perms>
Permission the application is requesting, one of B<read, write, or delete>, defaults to B<read>.
=back
=item C<is_oauth>
Returns B<1> if the L<Flickr::API> object is OAuth flavored, B<0> otherwise.
=back
=head1 AUTHOR
Cal Henderson, E<lt>cal@iamcal.comE<gt>
Auth API patches provided by Aaron Straup Cope
Subclassing patch from AHP
OAuth patches and additions Louis B. Moore <lbmoore@cpan.org>
=head1 LICENSE AND COPYRIGHT
Copyright (C) 2004-2013, Cal Henderson, E<lt>cal@iamcal.comE<gt>
OAuth patches and additions
Copyright (C) 2014-2016 Louis B. Moore <lbmoore@cpan.org>
This program is released under the Artistic License 2.0 by The Perl Foundation.
=head1 SEE ALSO
L<Flickr::API::Request>,
L<Flickr::API::Response>,
L<Net::OAuth>,
L<XML::Parser::Lite>,
L<Flickr|http://www.flickr.com/>,
L<http://www.flickr.com/services/api/>
L<https://www.flickr.com/services/api/auth.oauth.html>
L<https://github.com/iamcal/perl-Flickr-API>
=cut
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