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import express from 'express'
import { body, param, query } from 'express-validator'
import { isProdInstance } from '@server/helpers/core-utils'
import { isEachUniqueHandleValid, isFollowStateValid, isRemoteHandleValid } from '@server/helpers/custom-validators/follows'
import { loadActorUrlOrGetFromWebfinger } from '@server/lib/activitypub/actors'
import { getRemoteNameAndHost } from '@server/lib/activitypub/follow'
import { getServerActor } from '@server/models/application/application'
import { MActorFollowActorsDefault } from '@server/types/models'
import { ServerFollowCreate } from '@shared/models'
import { HttpStatusCode } from '../../../shared/models/http/http-error-codes'
import { isActorTypeValid, isValidActorHandle } from '../../helpers/custom-validators/activitypub/actor'
import { isEachUniqueHostValid, isHostValid } from '../../helpers/custom-validators/servers'
import { logger } from '../../helpers/logger'
import { WEBSERVER } from '../../initializers/constants'
import { ActorModel } from '../../models/actor/actor'
import { ActorFollowModel } from '../../models/actor/actor-follow'
import { areValidationErrors } from './shared'
const listFollowsValidator = [
query('state')
.optional()
.custom(isFollowStateValid).withMessage('Should have a valid follow state'),
query('actorType')
.optional()
.custom(isActorTypeValid).withMessage('Should have a valid actor type'),
(req: express.Request, res: express.Response, next: express.NextFunction) => {
if (areValidationErrors(req, res)) return
return next()
}
]
const followValidator = [
body('hosts')
.toArray()
.custom(isEachUniqueHostValid).withMessage('Should have an array of unique hosts'),
body('handles')
.toArray()
.custom(isEachUniqueHandleValid).withMessage('Should have an array of handles'),
(req: express.Request, res: express.Response, next: express.NextFunction) => {
// Force https if the administrator wants to follow remote actors
if (isProdInstance() && WEBSERVER.SCHEME === 'http') {
return res
.status(HttpStatusCode.INTERNAL_SERVER_ERROR_500)
.json({
error: 'Cannot follow on a non HTTPS web server.'
})
}
logger.debug('Checking follow parameters', { parameters: req.body })
if (areValidationErrors(req, res)) return
const body: ServerFollowCreate = req.body
if (body.hosts.length === 0 && body.handles.length === 0) {
return res
.status(HttpStatusCode.BAD_REQUEST_400)
.json({
error: 'You must provide at least one handle or one host.'
})
}
return next()
}
]
const removeFollowingValidator = [
param('hostOrHandle')
.custom(value => isHostValid(value) || isRemoteHandleValid(value))
.withMessage('Should have a valid host/handle'),
async (req: express.Request, res: express.Response, next: express.NextFunction) => {
logger.debug('Checking unfollowing parameters', { parameters: req.params })
if (areValidationErrors(req, res)) return
const serverActor = await getServerActor()
const { name, host } = getRemoteNameAndHost(req.params.hostOrHandle)
const follow = await ActorFollowModel.loadByActorAndTargetNameAndHostForAPI({
actorId: serverActor.id,
targetName: name,
targetHost: host
})
if (!follow) {
return res.fail({
status: HttpStatusCode.NOT_FOUND_404,
message: `Follow ${req.params.hostOrHandle} not found.`
})
}
res.locals.follow = follow
return next()
}
]
const getFollowerValidator = [
param('nameWithHost').custom(isValidActorHandle).withMessage('Should have a valid nameWithHost'),
async (req: express.Request, res: express.Response, next: express.NextFunction) => {
logger.debug('Checking get follower parameters', { parameters: req.params })
if (areValidationErrors(req, res)) return
let follow: MActorFollowActorsDefault
try {
const actorUrl = await loadActorUrlOrGetFromWebfinger(req.params.nameWithHost)
const actor = await ActorModel.loadByUrl(actorUrl)
const serverActor = await getServerActor()
follow = await ActorFollowModel.loadByActorAndTarget(actor.id, serverActor.id)
} catch (err) {
logger.warn('Cannot get actor from handle.', { handle: req.params.nameWithHost, err })
}
if (!follow) {
return res.fail({
status: HttpStatusCode.NOT_FOUND_404,
message: `Follower ${req.params.nameWithHost} not found.`
})
}
res.locals.follow = follow
return next()
}
]
const acceptFollowerValidator = [
(req: express.Request, res: express.Response, next: express.NextFunction) => {
logger.debug('Checking accept follower parameters', { parameters: req.params })
const follow = res.locals.follow
if (follow.state !== 'pending' && follow.state !== 'rejected') {
return res.fail({ message: 'Follow is not in pending/rejected state.' })
}
return next()
}
]
const rejectFollowerValidator = [
(req: express.Request, res: express.Response, next: express.NextFunction) => {
logger.debug('Checking reject follower parameters', { parameters: req.params })
const follow = res.locals.follow
if (follow.state !== 'pending' && follow.state !== 'accepted') {
return res.fail({ message: 'Follow is not in pending/accepted state.' })
}
return next()
}
]
// ---------------------------------------------------------------------------
export {
followValidator,
removeFollowingValidator,
getFollowerValidator,
acceptFollowerValidator,
rejectFollowerValidator,
listFollowsValidator
}
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