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import { buildSignedActivity, ContextType } from '../../../../helpers/activitypub'
import { getServerActor } from '../../../../helpers/utils'
import { ActorModel } from '../../../../models/activitypub/actor'
import { sha256 } from '../../../../helpers/core-utils'
import { ACTIVITY_PUB, HTTP_SIGNATURE } from '../../../../initializers/constants'
import { MActor } from '../../../../typings/models'
type Payload = { body: any, contextType?: ContextType, signatureActorId?: number }
async function computeBody (payload: Payload) {
let body = payload.body
if (payload.signatureActorId) {
const actorSignature = await ActorModel.load(payload.signatureActorId)
if (!actorSignature) throw new Error('Unknown signature actor id.')
body = await buildSignedActivity(actorSignature, payload.body, payload.contextType)
}
return body
}
async function buildSignedRequestOptions (payload: Payload) {
let actor: MActor | null
if (payload.signatureActorId) {
actor = await ActorModel.load(payload.signatureActorId)
if (!actor) throw new Error('Unknown signature actor id.')
} else {
// We need to sign the request, so use the server
actor = await getServerActor()
}
const keyId = actor.url
return {
algorithm: HTTP_SIGNATURE.ALGORITHM,
authorizationHeaderName: HTTP_SIGNATURE.HEADER_NAME,
keyId,
key: actor.privateKey,
headers: HTTP_SIGNATURE.HEADERS_TO_SIGN
}
}
function buildGlobalHeaders (body: any) {
return {
'Digest': buildDigest(body),
'Content-Type': 'application/activity+json',
'Accept': ACTIVITY_PUB.ACCEPT_HEADER
}
}
function buildDigest (body: any) {
const rawBody = typeof body === 'string' ? body : JSON.stringify(body)
return 'SHA-256=' + sha256(rawBody, 'base64')
}
export {
buildDigest,
buildGlobalHeaders,
computeBody,
buildSignedRequestOptions
}
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