9 files changed, 32 insertions, 12 deletions

diff --git a/server/helpers/activitypub.ts b/server/helpers/activitypub.ts
index d64a6dd78..1934fa0f0 100644
--- a/server/helpers/activitypub.ts
+++ b/server/helpers/activitypub.ts
@@ -1,5 +1,5 @@
 import { ResultList } from '../../shared/models'
-import { Activity } from '../../shared/models/activitypub'
+import { Activity, ActivityPubActor } from '../../shared/models/activitypub'
 import { ACTIVITY_PUB } from '../initializers'
 import { ActorModel } from '../models/activitypub/actor'
 import { signObject } from './peertube-crypto'
@@ -98,9 +98,16 @@ function buildSignedActivity (byActor: ActorModel, data: Object) {
   return signObject(byActor, activity) as Promise<Activity>
 }
 
+function getActorUrl (activityActor: string | ActivityPubActor) {
+  if (typeof activityActor === 'string') return activityActor
+
+  return activityActor.id
+}
+
 // ---------------------------------------------------------------------------
 
 export {
+  getActorUrl,
   activityPubContextify,
   activityPubCollectionPagination,
   activityPubCollection,
diff --git a/server/helpers/custom-validators/activitypub/activity.ts b/server/helpers/custom-validators/activitypub/activity.ts
index 632f14223..7e4dccefb 100644
--- a/server/helpers/custom-validators/activitypub/activity.ts
+++ b/server/helpers/custom-validators/activitypub/activity.ts
@@ -26,7 +26,7 @@ function isRootActivityValid (activity: any) {
     ) ||
     (
       isActivityPubUrlValid(activity.id) &&
-      isActivityPubUrlValid(activity.actor)
+      (isActivityPubUrlValid(activity.actor) || isActivityPubUrlValid(activity.actor.id))
     )
 }
 
diff --git a/server/helpers/custom-validators/activitypub/misc.ts b/server/helpers/custom-validators/activitypub/misc.ts
index 75d308e9d..2dac8e1ad 100644
--- a/server/helpers/custom-validators/activitypub/misc.ts
+++ b/server/helpers/custom-validators/activitypub/misc.ts
@@ -24,7 +24,7 @@ function isBaseActivityValid (activity: any, type: string) {
   return (activity['@context'] === undefined || Array.isArray(activity['@context'])) &&
     activity.type === type &&
     isActivityPubUrlValid(activity.id) &&
-    isActivityPubUrlValid(activity.actor) &&
+    (isActivityPubUrlValid(activity.actor) || isActivityPubUrlValid(activity.actor.id)) &&
     (
       activity.to === undefined ||
       (Array.isArray(activity.to) && activity.to.every(t => isActivityPubUrlValid(t)))
diff --git a/server/lib/activitypub/actor.ts b/server/lib/activitypub/actor.ts
index b7114bbee..fa31e71c7 100644
--- a/server/lib/activitypub/actor.ts
+++ b/server/lib/activitypub/actor.ts
@@ -5,6 +5,7 @@ import * as url from 'url'
 import * as uuidv4 from 'uuid/v4'
 import { ActivityPubActor, ActivityPubActorType } from '../../../shared/models/activitypub'
 import { ActivityPubAttributedTo } from '../../../shared/models/activitypub/objects'
+import { getActorUrl } from '../../helpers/activitypub'
 import { isActorObjectValid } from '../../helpers/custom-validators/activitypub/actor'
 import { isActivityPubUrlValid } from '../../helpers/custom-validators/activitypub/misc'
 import { retryTransactionWrapper, updateInstanceWithAnother } from '../../helpers/database-utils'
@@ -34,7 +35,9 @@ function setAsyncActorKeys (actor: ActorModel) {
     })
 }
 
-async function getOrCreateActorAndServerAndModel (actorUrl: string, recurseIfNeeded = true) {
+async function getOrCreateActorAndServerAndModel (activityActor: string | ActivityPubActor, recurseIfNeeded = true) {
+  const actorUrl = getActorUrl(activityActor)
+
   let actor = await ActorModel.loadByUrl(actorUrl)
 
   // We don't have this actor in our database, fetch it on remote
diff --git a/server/lib/activitypub/process/process-accept.ts b/server/lib/activitypub/process/process-accept.ts
index 7db2f8ff0..c55b57820 100644
--- a/server/lib/activitypub/process/process-accept.ts
+++ b/server/lib/activitypub/process/process-accept.ts
@@ -1,4 +1,5 @@
 import { ActivityAccept } from '../../../../shared/models/activitypub'
+import { getActorUrl } from '../../../helpers/activitypub'
 import { ActorModel } from '../../../models/activitypub/actor'
 import { ActorFollowModel } from '../../../models/activitypub/actor-follow'
 import { addFetchOutboxJob } from '../fetch'
@@ -6,7 +7,8 @@ import { addFetchOutboxJob } from '../fetch'
 async function processAcceptActivity (activity: ActivityAccept, inboxActor?: ActorModel) {
   if (inboxActor === undefined) throw new Error('Need to accept on explicit inbox.')
 
-  const targetActor = await ActorModel.loadByUrl(activity.actor)
+  const actorUrl = getActorUrl(activity.actor)
+  const targetActor = await ActorModel.loadByUrl(actorUrl)
 
   return processAccept(inboxActor, targetActor)
 }
diff --git a/server/lib/activitypub/process/process-reject.ts b/server/lib/activitypub/process/process-reject.ts
index b2de28d79..f06b03772 100644
--- a/server/lib/activitypub/process/process-reject.ts
+++ b/server/lib/activitypub/process/process-reject.ts
@@ -1,4 +1,5 @@
 import { ActivityReject } from '../../../../shared/models/activitypub/activity'
+import { getActorUrl } from '../../../helpers/activitypub'
 import { sequelizeTypescript } from '../../../initializers'
 import { ActorModel } from '../../../models/activitypub/actor'
 import { ActorFollowModel } from '../../../models/activitypub/actor-follow'
@@ -6,7 +7,8 @@ import { ActorFollowModel } from '../../../models/activitypub/actor-follow'
 async function processRejectActivity (activity: ActivityReject, inboxActor?: ActorModel) {
   if (inboxActor === undefined) throw new Error('Need to reject on explicit inbox.')
 
-  const targetActor = await ActorModel.loadByUrl(activity.actor)
+  const actorUrl = getActorUrl(activity.actor)
+  const targetActor = await ActorModel.loadByUrl(actorUrl)
 
   return processReject(inboxActor, targetActor)
 }
diff --git a/server/lib/activitypub/process/process-undo.ts b/server/lib/activitypub/process/process-undo.ts
index 5a770bb97..565e70289 100644
--- a/server/lib/activitypub/process/process-undo.ts
+++ b/server/lib/activitypub/process/process-undo.ts
@@ -1,5 +1,6 @@
 import { ActivityFollow, ActivityLike, ActivityUndo } from '../../../../shared/models/activitypub'
 import { DislikeObject } from '../../../../shared/models/activitypub/objects'
+import { getActorUrl } from '../../../helpers/activitypub'
 import { retryTransactionWrapper } from '../../../helpers/database-utils'
 import { logger } from '../../../helpers/logger'
 import { sequelizeTypescript } from '../../../initializers'
@@ -13,12 +14,14 @@ import { getOrCreateAccountAndVideoAndChannel } from '../videos'
 async function processUndoActivity (activity: ActivityUndo) {
   const activityToUndo = activity.object
 
+  const actorUrl = getActorUrl(activity.actor)
+
   if (activityToUndo.type === 'Like') {
-    return processUndoLike(activity.actor, activity)
+    return processUndoLike(actorUrl, activity)
   } else if (activityToUndo.type === 'Create' && activityToUndo.object.type === 'Dislike') {
-    return processUndoDislike(activity.actor, activity)
+    return processUndoDislike(actorUrl, activity)
   } else if (activityToUndo.type === 'Follow') {
-    return processUndoFollow(activity.actor, activityToUndo)
+    return processUndoFollow(actorUrl, activityToUndo)
   }
 
   logger.warn('Unknown activity object type %s -> %s when undo activity.', activityToUndo.type, { activity: activity.id })
diff --git a/server/lib/activitypub/process/process.ts b/server/lib/activitypub/process/process.ts
index 094219489..10d8ba189 100644
--- a/server/lib/activitypub/process/process.ts
+++ b/server/lib/activitypub/process/process.ts
@@ -1,4 +1,5 @@
 import { Activity, ActivityType } from '../../../../shared/models/activitypub'
+import { getActorUrl } from '../../../helpers/activitypub'
 import { logger } from '../../../helpers/logger'
 import { ActorModel } from '../../../models/activitypub/actor'
 import { processAcceptActivity } from './process-accept'
@@ -25,9 +26,11 @@ const processActivity: { [ P in ActivityType ]: (activity: Activity, inboxActor?
 
 async function processActivities (activities: Activity[], signatureActor?: ActorModel, inboxActor?: ActorModel) {
   for (const activity of activities) {
+    const actorUrl = getActorUrl(activity.actor)
+
     // When we fetch remote data, we don't have signature
-    if (signatureActor && activity.actor !== signatureActor.url) {
-      logger.warn('Signature mismatch between %s and %s.', activity.actor, signatureActor.url)
+    if (signatureActor && actorUrl !== signatureActor.url) {
+      logger.warn('Signature mismatch between %s and %s.', actorUrl, signatureActor.url)
       continue
     }
 
diff --git a/shared/models/activitypub/activity.ts b/shared/models/activitypub/activity.ts
index a28260ffd..f555f0118 100644
--- a/shared/models/activitypub/activity.ts
+++ b/shared/models/activitypub/activity.ts
@@ -22,7 +22,7 @@ export interface BaseActivity {
   id: string
   to?: string[]
   cc?: string[]
-  actor: string
+  actor: string | ActivityPubActor
   type: ActivityType
   signature?: ActivityPubSignature
 }