export FOAF

darcs-hash:20080610121132-84dde-f0f49c2e33c650e6cf91d3e31f595b0ee570e603.gz

1 files changed, 186 insertions, 0 deletions

diff --git a/actions/foaf.php b/actions/foaf.php
new file mode 100644
index 000000000..d005510b6
--- /dev/null
+++ b/actions/foaf.php
@@ -0,0 +1,186 @@
+<?php
+/*
+ * Laconica - a distributed open-source microblogging tool
+ * Copyright (C) 2008, Controlez-Vous, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+if (!defined('LACONICA')) { exit(1); }
+
+define('LISTENER', 1);
+define('LISTENEE', -1);
+define('BOTH', 0);
+
+class FoafAction extends Action {
+	
+	function handle($args) {
+		parent::handle($args);
+
+		$nickname = $this->trimmed('nickname');
+		
+		$user = User::staticGet('nickname', $nickname);
+		
+		if (!$user) {
+			common_user_error(_t('No such user'), 404);
+			return;
+		}
+
+		$profile = $user->getProfile();
+
+		if (!$profile) {
+			common_server_error(_t('User has no profile'), 500);
+			return;
+		}
+		
+		header('Content-Type: application/rdf+xml');
+
+		common_start_xml();
+		common_element_start('rdf:RDF', array('xmlns:rdf' =>
+											  'http://www.w3.org/1999/02/22-rdf-syntax-ns#',
+											  'xmlns:rdfs' =>
+											  'http://www.w3.org/2000/01/rdf-schema#',
+											  'xmlns' => 'http://xmlns.com/foaf/0.1/'));
+
+		# This is the document about the user
+		
+		$this->show_ppd('', $user->uri);
+		
+		# XXX: might not be a person
+		common_element_start('Person', array('rdf:about' =>
+											 $user->uri));
+		common_element('mbox_sha1sum', NULL, sha1('mailto:' . $user->email));
+		if ($profile->fullname) {
+			common_element('name', NULL, $profile->fullname);
+		}
+		if ($profile->homepage) {
+			common_element('homepage', array('rdf:resource' => $profile->homepage));
+		}
+		if ($profile->bio) {
+			common_element('rdfs:comment', NULL, $profile->bio);
+		}
+		# XXX: more structured location data
+		if ($profile->location) {
+			common_element_start('based_near');
+			common_element_start('geo:SpatialThing');
+			common_element('name', NULL, $profile->location);
+			common_element_end('geo:SpatialThing');
+			common_element_end('based_near');
+		}
+
+		$this->show_microblogging_account($profile, common_root_url());
+
+		$avatar = $profile->getOriginalAvatar();
+
+		if ($avatar) {
+			common_element_start('img');
+			common_element_start('Image', array('rdf:about' => $avatar->url));
+			foreach (array(AVATAR_PROFILE_SIZE, AVATAR_STREAM_SIZE, AVATAR_MINI_SIZE) as $size) {
+				$scaled = $profile->getAvatar($size);
+				if (!$scaled->original) { # sometimes the original has one of our scaled sizes
+					common_element_start('thumbnail');
+					common_element('Image', array('rdf:about', $scaled->url));
+					common_element_end('thumbnail');
+				}
+			}
+			common_element_end('Image');
+			common_element_end('img');
+		}
+
+		# Get people user is subscribed to
+		
+		$person = array();
+
+		$sub = new Subscription();
+		$sub->subscriber = $profile->id;
+
+		if ($sub->find()) {
+			while ($sub->fetch()) {
+				if ($sub->token) {
+					$other = Remote_profile::staticGet($sub->subscribed);
+				} else {
+					$other = User::staticGet($sub->subscribed);
+				}
+				common_element('knows', array('rdf:about', $other->uri));
+				$person[$other->uri] = array(LISTENEE, $other);
+			}
+		}
+
+		# Get people who subscribe to user
+
+		$sub = new Subscription();
+		$sub->subscribed = $profile->id;
+
+		if ($sub->find()) {
+			while ($sub->fetch()) {
+				if ($sub->token) {
+					$other = Remote_profile::staticGet($sub->subscribed);
+				} else {
+					$other = User::staticGet($sub->subscribed);
+				}
+				if (array_key_exists($other->uri, $person)) {
+					$person[$other->uri][0] = BOTH;
+				} else {
+					$person[$other->uri] = array(LISTENER, $other);
+				}
+			}
+		}
+		
+		common_element_end('Person');
+
+		foreach ($person as $uri => $p) {
+			$foaf_url = NULL;
+			if ($p[1] instanceof User) {
+				$foaf_url = common_local_url('foaf', array('nickname' => $p[1]->nickname));
+			}
+			$profile = Profile::staticGet($p[1]->id);
+			common_element_start('Person', array('rdf:about' => $uri));
+			if ($p[0] == LISTENER || $p[0] == BOTH) {
+				common_element('knows', array('rdf:about', $user->uri));
+			}
+			$this->show_microblogging_account($profile, ($p[1] instanceof User) ?
+											  common_root_url() : NULL);
+			if ($foaf_url) {
+				common_element('rdfs:seeAlso', array('rdf:resource' => $foaf_url));
+			}
+			common_element_end('Person');
+			if ($foaf_url) {
+				$this->show_ppd($foaf_url, $uri);
+			}
+		}
+		
+		common_element_end('rdf:RDF');
+	}
+	
+	function show_ppd($foaf_url, $person_uri) {
+		common_element_start('PersonalProfileDocument', array('rdf:about' => $foaf_url));
+		common_element('maker', array('rdf:resource' => $person_uri));
+		common_element('primaryTopic', array('rdf:resource' => $person_uri));
+		common_element_end('PersonalProfileDocument');
+	}
+	
+	function show_microblogging_account($profile, $service=NULL) {
+		# Their account
+		common_element_start('holdsAccount');
+		common_element_start('OnlineAccount');
+		if ($service) {
+			common_element('accountServiceHomepage', array('rdf:resource' =>
+														   $service));
+		}
+		common_element('accountName', NULL, $profile->nickname);
+		common_element('homepage', array('rdf:resource' => $profile->profileurl));
+		common_element_end('OnlineAccount');
+		common_element_end('holdsAccount');
+	}
+}