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-rw-r--r--plugins/OStatus/lib/activity.php330
1 files changed, 319 insertions, 11 deletions
diff --git a/plugins/OStatus/lib/activity.php b/plugins/OStatus/lib/activity.php
index 36e227913..048efda2c 100644
--- a/plugins/OStatus/lib/activity.php
+++ b/plugins/OStatus/lib/activity.php
@@ -31,7 +31,75 @@ if (!defined('STATUSNET')) {
exit(1);
}
-class ActivityNoun
+/**
+ * Utilities for turning DOMish things into Activityish things
+ *
+ * Some common functions that I didn't have the bandwidth to try to factor
+ * into some kind of reasonable superclass, so just dumped here. Might
+ * be useful to have an ActivityObject parent class or something.
+ *
+ * @category OStatus
+ * @package StatusNet
+ * @author Evan Prodromou <evan@status.net>
+ * @copyright 2010 StatusNet, Inc.
+ * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPLv3
+ * @link http://status.net/
+ */
+
+class ActivityUtils
+{
+ const ATOM = 'http://www.w3.org/2005/Atom';
+
+ const LINK = 'link';
+ const REL = 'rel';
+ const TYPE = 'type';
+ const HREF = 'href';
+
+ /**
+ * Get the permalink for an Activity object
+ *
+ * @param DOMElement $element A DOM element
+ *
+ * @return string related link, if any
+ */
+
+ static function getLink($element)
+ {
+ $links = $element->getElementsByTagnameNS(self::ATOM, self::LINK);
+
+ foreach ($links as $link) {
+
+ $rel = $link->getAttribute(self::REL);
+ $type = $link->getAttribute(self::TYPE);
+
+ if ($rel == 'alternate' && $type == 'text/html') {
+ return $link->getAttribute(self::HREF);
+ }
+ }
+
+ return null;
+ }
+}
+
+/**
+ * A noun-ish thing in the activity universe
+ *
+ * The activity streams spec talks about activity objects, while also having
+ * a tag activity:object, which is in fact an activity object. Aaaaaah!
+ *
+ * This is just a thing in the activity universe. Can be the subject, object,
+ * or indirect object (target!) of an activity verb. Rotten name, and I'm
+ * propagating it. *sigh*
+ *
+ * @category OStatus
+ * @package StatusNet
+ * @author Evan Prodromou <evan@status.net>
+ * @copyright 2010 StatusNet, Inc.
+ * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPLv3
+ * @link http://status.net/
+ */
+
+class ActivityObject
{
const ARTICLE = 'http://activitystrea.ms/schema/1.0/article';
const BLOGENTRY = 'http://activitystrea.ms/schema/1.0/blog-entry';
@@ -47,19 +115,114 @@ class ActivityNoun
const PERSON = 'http://activitystrea.ms/schema/1.0/person';
const GROUP = 'http://activitystrea.ms/schema/1.0/group';
const PLACE = 'http://activitystrea.ms/schema/1.0/place';
- const COMMENT = 'http://activitystrea.ms/schema/1.0/comment'; // tea
+ const COMMENT = 'http://activitystrea.ms/schema/1.0/comment';
+ // ^^^^^^^^^^ tea!
+
+ // Atom elements we snarf
+
+ const TITLE = 'title';
+ const SUMMARY = 'summary';
+ const CONTENT = 'content';
+ const ID = 'id';
+ const SOURCE = 'source';
+
+ const NAME = 'name';
+ const URI = 'uri';
+ const EMAIL = 'email';
public $type;
public $id;
public $title;
public $summary;
public $content;
+ public $link;
+ public $source;
+
+ /**
+ * Constructor
+ *
+ * This probably needs to be refactored
+ * to generate a local class (ActivityPerson, ActivityFile, ...)
+ * based on the object type.
+ *
+ * @param DOMElement $element DOM thing to turn into an Activity thing
+ */
+
+ function __construct($element)
+ {
+ $this->source = $element;
+
+ if ($element->tagName == 'author') {
+
+ $this->type = self::PERSON; // XXX: is this fair?
+ $this->title = $this->_childContent($element, self::NAME);
+ $this->id = $this->_childContent($element, self::URI);
+
+ if (empty($this->id)) {
+ $email = $this->_childContent($element, self::EMAIL);
+ if (!empty($email)) {
+ // XXX: acct: ?
+ $this->id = 'mailto:'.$email;
+ }
+ }
+
+ } else {
+
+ $this->type = $this->_childContent($element, Activity::OBJECTTYPE,
+ Activity::SPEC);
+
+ if (empty($this->type)) {
+ $this->type = ActivityObject::NOTE;
+ }
+
+ $this->id = $this->_childContent($element, self::ID);
+ $this->title = $this->_childContent($element, self::TITLE);
+ $this->summary = $this->_childContent($element, self::SUMMARY);
+ $this->content = $this->_childContent($element, self::CONTENT);
+ $this->source = $this->_childContent($element, self::SOURCE);
+
+ $this->link = ActivityUtils::getLink($element);
+
+ // XXX: grab PoCo stuff
+ }
+ }
+
+ /**
+ * Grab the text content of a DOM element child of the current element
+ *
+ * @param DOMElement $element Element whose children we examine
+ * @param string $tag Tag to look up
+ * @param string $namespace Namespace to use, defaults to Atom
+ *
+ * @return string content of the child
+ */
+
+ private function _childContent($element, $tag, $namespace=Activity::ATOM)
+ {
+ $els = $element->getElementsByTagnameNS($namespace, $tag);
+
+ if (empty($els) || $els->length == 0) {
+ return null;
+ } else {
+ $el = $els->item(0);
+ return $el->textContent;
+ }
+ }
}
-class Activity
-{
- const NAMESPACE = 'http://activitystrea.ms/schema/1.0/';
+/**
+ * Utility class to hold a bunch of constant defining default verb types
+ *
+ * @category OStatus
+ * @package StatusNet
+ * @author Evan Prodromou <evan@status.net>
+ * @copyright 2010 StatusNet, Inc.
+ * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPLv3
+ * @link http://status.net/
+ */
+class ActivityVerb
+{
const POST = 'http://activitystrea.ms/schema/1.0/post';
const SHARE = 'http://activitystrea.ms/schema/1.0/share';
const SAVE = 'http://activitystrea.ms/schema/1.0/save';
@@ -69,17 +232,162 @@ class Activity
const FRIEND = 'http://activitystrea.ms/schema/1.0/make-friend';
const JOIN = 'http://activitystrea.ms/schema/1.0/join';
const TAG = 'http://activitystrea.ms/schema/1.0/tag';
+}
+
+/**
+ * An activity in the ActivityStrea.ms world
+ *
+ * An activity is kind of like a sentence: someone did something
+ * to something else.
+ *
+ * 'someone' is the 'actor'; 'did something' is the verb;
+ * 'something else' is the object.
+ *
+ * @category OStatus
+ * @package StatusNet
+ * @author Evan Prodromou <evan@status.net>
+ * @copyright 2010 StatusNet, Inc.
+ * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPLv3
+ * @link http://status.net/
+ */
+
+class Activity
+{
+ const SPEC = 'http://activitystrea.ms/spec/1.0/';
+ const SCHEMA = 'http://activitystrea.ms/schema/1.0/';
+
+ const VERB = 'verb';
+ const OBJECT = 'object';
+ const ACTOR = 'actor';
+ const SUBJECT = 'subject';
+ const OBJECTTYPE = 'object-type';
+ const CONTEXT = 'context';
+ const TARGET = 'target';
+
+ const ATOM = 'http://www.w3.org/2005/Atom';
+
+ const AUTHOR = 'author';
+ const PUBLISHED = 'published';
+ const UPDATED = 'updated';
- public $actor; // an ActivityNoun
- public $verb; // a string (the URL)
- public $object; // an ActivityNoun
- public $target; // an ActivityNoun
+ public $actor; // an ActivityObject
+ public $verb; // a string (the URL)
+ public $object; // an ActivityObject
+ public $target; // an ActivityObject
+ public $context; // an ActivityObject
+ public $time; // Time of the activity
+ public $link; // an ActivityObject
+ public $entry; // the source entry
+ public $feed; // the source feed
- static function fromAtomEntry($domEntry)
+ /**
+ * Turns a regular old Atom <entry> into a magical activity
+ *
+ * @param DOMElement $entry Atom entry to poke at
+ * @param DOMElement $feed Atom feed, for context
+ */
+
+ function __construct($entry, $feed = null)
{
+ $this->entry = $entry;
+ $this->feed = $feed;
+
+ $pubEl = $this->_child($entry, self::PUBLISHED, self::ATOM);
+
+ if (!empty($pubEl)) {
+ $this->time = strtotime($pubEl->textContent);
+ } else {
+ // XXX technically an error; being liberal. Good idea...?
+ $updateEl = $this->_child($entry, self::UPDATED, self::ATOM);
+ if (!empty($updateEl)) {
+ $this->time = strtotime($updateEl->textContent);
+ } else {
+ $this->time = null;
+ }
+ }
+
+ $this->link = ActivityUtils::getLink($entry);
+
+ $verbEl = $this->_child($entry, self::VERB);
+
+ if (!empty($verbEl)) {
+ $this->verb = trim($verbEl->textContent);
+ } else {
+ $this->verb = ActivityVerb::POST;
+ // XXX: do other implied stuff here
+ }
+
+ $objectEl = $this->_child($entry, self::OBJECT);
+
+ if (!empty($objectEl)) {
+ $this->object = new ActivityObject($objectEl);
+ } else {
+ $this->object = new ActivityObject($entry);
+ }
+
+ $actorEl = $this->_child($entry, self::ACTOR);
+
+ if (!empty($actorEl)) {
+
+ $this->actor = new ActivityObject($actorEl);
+
+ } else if (!empty($feed) &&
+ $subjectEl = $this->_child($feed, self::SUBJECT)) {
+
+ $this->actor = new ActivityObject($subjectEl);
+
+ } else if ($authorEl = $this->_child($entry, self::AUTHOR, self::ATOM)) {
+
+ $this->actor = new ActivityObject($authorEl);
+
+ } else if (!empty($feed) && $authorEl = $this->_child($feed, self::AUTHOR,
+ self::ATOM)) {
+
+ $this->actor = new ActivityObject($authorEl);
+ }
+
+ $contextEl = $this->_child($entry, self::CONTEXT);
+
+ if (!empty($contextEl)) {
+ $this->context = new ActivityObject($contextEl);
+ }
+
+ $targetEl = $this->_child($entry, self::TARGET);
+
+ if (!empty($targetEl)) {
+ $this->target = new ActivityObject($targetEl);
+ }
}
+ /**
+ * Returns an Atom <entry> based on this activity
+ *
+ * @return DOMElement Atom entry
+ */
+
function toAtomEntry()
{
+ return null;
}
-}
+
+ /**
+ * Gets the first child element with the given tag
+ *
+ * @param DOMElement $element element to pick at
+ * @param string $tag tag to look for
+ * @param string $namespace Namespace to look under
+ *
+ * @return DOMElement found element or null
+ */
+
+ private function _child($element, $tag, $namespace=self::SPEC)
+ {
+ $els = $element->getElementsByTagnameNS($namespace, $tag);
+
+ if (empty($els) || $els->length == 0) {
+ return null;
+ } else {
+ return $els->item(0);
+ }
+ }
+} \ No newline at end of file
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-07 08:52:27 +0000