118 lines
3.3 KiB
JavaScript
118 lines
3.3 KiB
JavaScript
const { localActorId } = require('./util');
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const {
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ActivityStreamMediaType,
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WellKnownActivityTypes,
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WellKnownActivity,
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WellKnownRecipientFields,
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HttpSignatureSignHeaders,
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} = require('./const');
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const ActivityPubObject = require('./object');
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const { Errors } = require('../enig_error');
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const UserProps = require('../user_property');
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const { postJson } = require('../http_util');
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const { getISOTimestampString } = require('../database');
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// deps
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const _ = require('lodash');
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module.exports = class Activity extends ActivityPubObject {
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constructor(obj) {
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super(obj);
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}
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static get ActivityTypes() {
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return WellKnownActivityTypes;
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}
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static fromJsonString(s) {
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const obj = ActivityPubObject.fromJsonString(s);
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return new Activity(obj);
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}
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static makeFollow(webServer, localActor, remoteActor) {
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return new Activity({
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id: Activity.activityObjectId(webServer),
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type: WellKnownActivity.Follow,
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actor: localActor,
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object: remoteActor.id,
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});
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}
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// https://www.w3.org/TR/activitypub/#accept-activity-inbox
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static makeAccept(webServer, localActor, followRequest) {
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return new Activity({
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id: Activity.activityObjectId(webServer),
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type: WellKnownActivity.Accept,
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actor: localActor,
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object: followRequest, // previous request Activity
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});
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}
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static makeCreate(webServer, actor, obj) {
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return new Activity({
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id: Activity.activityObjectId(webServer),
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type: WellKnownActivity.Create,
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actor,
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object: obj,
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});
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}
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static makeTombstone(obj) {
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const deleted = getISOTimestampString();
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return new Activity({
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id: obj.id,
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type: WellKnownActivity.Tombstone,
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deleted,
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published: deleted,
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updated: deleted,
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});
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}
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sendTo(actorUrl, fromUser, webServer, cb) {
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const privateKey = fromUser.getProperty(UserProps.PrivateActivityPubSigningKey);
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if (_.isEmpty(privateKey)) {
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return cb(
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Errors.MissingProperty(
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`User "${fromUser.username}" is missing the '${UserProps.PrivateActivityPubSigningKey}' property`
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)
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);
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}
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const reqOpts = {
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headers: {
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'Content-Type': ActivityStreamMediaType,
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},
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sign: {
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key: privateKey,
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keyId: localActorId(webServer, fromUser) + '#main-key',
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authorizationHeaderName: 'Signature',
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headers: HttpSignatureSignHeaders,
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},
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};
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const activityJson = JSON.stringify(this);
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return postJson(actorUrl, activityJson, reqOpts, cb);
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}
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// :TODO: we need dp/support a bit more here...
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recipientIds() {
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const ids = [];
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WellKnownRecipientFields.forEach(field => {
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let v = this[field];
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if (v) {
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if (!Array.isArray(v)) {
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v = [v];
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}
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ids.push(...v);
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}
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});
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return Array.from(new Set(ids));
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}
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static activityObjectId(webServer) {
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return ActivityPubObject.makeObjectId(webServer, 'activity');
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}
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};
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