1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
# Pleroma: A lightweight social networking server
# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.ActivityPub.ObjectValidators.AnnounceValidator do
use Ecto.Schema
alias Pleroma.EctoType.ActivityPub.ObjectValidators
alias Pleroma.Object
alias Pleroma.User
alias Pleroma.Web.ActivityPub.Utils
alias Pleroma.Web.ActivityPub.Visibility
import Ecto.Changeset
import Pleroma.Web.ActivityPub.ObjectValidators.CommonValidations
require Pleroma.Constants
@primary_key false
embedded_schema do
field(:id, ObjectValidators.ObjectID, primary_key: true)
field(:type, :string)
field(:object, ObjectValidators.ObjectID)
field(:actor, ObjectValidators.ObjectID)
field(:context, :string, autogenerate: {Utils, :generate_context_id, []})
field(:to, ObjectValidators.Recipients, default: [])
field(:cc, ObjectValidators.Recipients, default: [])
field(:published, ObjectValidators.DateTime)
end
def cast_and_validate(data) do
data
|> cast_data()
|> validate_data()
end
def cast_data(data) do
%__MODULE__{}
|> changeset(data)
end
def changeset(struct, data) do
struct
|> cast(data, __schema__(:fields))
|> fix_after_cast()
end
def fix_after_cast(cng) do
cng
end
def validate_data(data_cng) do
data_cng
|> validate_inclusion(:type, ["Announce"])
|> validate_required([:id, :type, :object, :actor, :to, :cc])
|> validate_actor_presence()
|> validate_object_presence()
|> validate_existing_announce()
|> validate_announcable()
end
def validate_announcable(cng) do
with actor when is_binary(actor) <- get_field(cng, :actor),
object when is_binary(object) <- get_field(cng, :object),
%User{} = actor <- User.get_cached_by_ap_id(actor),
%Object{} = object <- Object.get_cached_by_ap_id(object),
false <- Visibility.is_public?(object) do
same_actor = object.data["actor"] == actor.ap_id
recipients = get_field(cng, :to) ++ get_field(cng, :cc)
local_public = Pleroma.Constants.as_local_public()
is_public =
Enum.member?(recipients, Pleroma.Constants.as_public()) or
Enum.member?(recipients, local_public)
cond do
same_actor && is_public ->
cng
|> add_error(:actor, "can not announce this object publicly")
!same_actor ->
cng
|> add_error(:actor, "can not announce this object")
true ->
cng
end
else
_ -> cng
end
end
def validate_existing_announce(cng) do
actor = get_field(cng, :actor)
object = get_field(cng, :object)
if actor && object && Utils.get_existing_announce(actor, %{data: %{"id" => object}}) do
cng
|> add_error(:actor, "already announced this object")
|> add_error(:object, "already announced by this actor")
else
cng
end
end
end
|
