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move key generation functions into Pleroma.Keys module

This commit is contained in:
William Pitcock 2019-05-22 03:58:15 +00:00
parent be6b57193a
commit 045803346d
14 changed files with 133 additions and 124 deletions
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44
lib/pleroma/keys.ex Normal file
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@ -0,0 +1,44 @@
# Pleroma: A lightweight social networking server
# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Keys do
# Native generation of RSA keys is only available since OTP 20+ and in default build conditions
# We try at compile time to generate natively an RSA key otherwise we fallback on the old way.
try do
_ = :public_key.generate_key({:rsa, 2048, 65_537})
def generate_rsa_pem do
key = :public_key.generate_key({:rsa, 2048, 65_537})
entry = :public_key.pem_entry_encode(:RSAPrivateKey, key)
pem = :public_key.pem_encode([entry]) |> String.trim_trailing()
{:ok, pem}
end
rescue
_ ->
def generate_rsa_pem do
port = Port.open({:spawn, "openssl genrsa"}, [:binary])
{:ok, pem} =
receive do
{^port, {:data, pem}} -> {:ok, pem}
end
Port.close(port)
if Regex.match?(~r/RSA PRIVATE KEY/, pem) do
{:ok, pem}
else
:error
end
end
end
def keys_from_pem(pem) do
[private_key_code] = :public_key.pem_decode(pem)
private_key = :public_key.pem_entry_decode(private_key_code)
{:RSAPrivateKey, _, modulus, exponent, _, _, _, _, _, _, _} = private_key
public_key = {:RSAPublicKey, modulus, exponent}
{:ok, private_key, public_key}
end
end

7
lib/pleroma/signature.ex
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@ -5,11 +5,10 @@
defmodule Pleroma.Signature do
@behaviour HTTPSignatures.Adapter
alias Pleroma.Keys
alias Pleroma.User
alias Pleroma.Web.ActivityPub.ActivityPub
alias Pleroma.Web.ActivityPub.Utils
alias Pleroma.Web.Salmon
alias Pleroma.Web.WebFinger
def fetch_public_key(conn) do
with actor_id <- Utils.get_ap_id(conn.params["actor"]),
@ -33,8 +32,8 @@ def refetch_public_key(conn) do
end
def sign(%User{} = user, headers) do
with {:ok, %{info: %{keys: keys}}} <- WebFinger.ensure_keys_present(user),
{:ok, private_key, _} <- Salmon.keys_from_pem(keys) do
with {:ok, %{info: %{keys: keys}}} <- User.ensure_keys_present(user),
{:ok, private_key, _} <- Keys.keys_from_pem(keys) do
HTTPSignatures.sign(private_key, user.ap_id <> "#main-key", headers)
end
end

21
lib/pleroma/user.ex
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@ -10,6 +10,7 @@ defmodule Pleroma.User do
alias Comeonin.Pbkdf2
alias Pleroma.Activity
alias Pleroma.Keys
alias Pleroma.Notification
alias Pleroma.Object
alias Pleroma.Registration
@ -1422,4 +1423,24 @@ def get_mascot(%{info: %{mascot: mascot}}) when is_nil(mascot) do
}
}
end
def ensure_keys_present(user) do
info = user.info
if info.keys do
{:ok, user}
else
{:ok, pem} = Keys.generate_rsa_pem()
info_cng =
info
|> User.Info.set_keys(pem)
cng =
Ecto.Changeset.change(user)
|> Ecto.Changeset.put_embed(:info, info_cng)
update_and_set_cache(cng)
end
end
end

14
lib/pleroma/web/activity_pub/activity_pub_controller.ex
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@ -39,7 +39,7 @@ def relay_active?(conn, _) do
def user(conn, %{"nickname" => nickname}) do
with %User{} = user <- User.get_cached_by_nickname(nickname),
{:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
{:ok, user} <- User.ensure_keys_present(user) do
conn
|> put_resp_header("content-type", "application/activity+json")
|> json(UserView.render("user.json", %{user: user}))
@ -106,7 +106,7 @@ def activity(conn, %{"uuid" => uuid}) do
def following(conn, %{"nickname" => nickname, "page" => page}) do
with %User{} = user <- User.get_cached_by_nickname(nickname),
{:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
{:ok, user} <- User.ensure_keys_present(user) do
{page, _} = Integer.parse(page)
conn
@ -117,7 +117,7 @@ def following(conn, %{"nickname" => nickname, "page" => page}) do
def following(conn, %{"nickname" => nickname}) do
with %User{} = user <- User.get_cached_by_nickname(nickname),
{:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
{:ok, user} <- User.ensure_keys_present(user) do
conn
|> put_resp_header("content-type", "application/activity+json")
|> json(UserView.render("following.json", %{user: user}))
@ -126,7 +126,7 @@ def following(conn, %{"nickname" => nickname}) do
def followers(conn, %{"nickname" => nickname, "page" => page}) do
with %User{} = user <- User.get_cached_by_nickname(nickname),
{:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
{:ok, user} <- User.ensure_keys_present(user) do
{page, _} = Integer.parse(page)
conn
@ -137,7 +137,7 @@ def followers(conn, %{"nickname" => nickname, "page" => page}) do
def followers(conn, %{"nickname" => nickname}) do
with %User{} = user <- User.get_cached_by_nickname(nickname),
{:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
{:ok, user} <- User.ensure_keys_present(user) do
conn
|> put_resp_header("content-type", "application/activity+json")
|> json(UserView.render("followers.json", %{user: user}))
@ -146,7 +146,7 @@ def followers(conn, %{"nickname" => nickname}) do
def outbox(conn, %{"nickname" => nickname} = params) do
with %User{} = user <- User.get_cached_by_nickname(nickname),
{:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
{:ok, user} <- User.ensure_keys_present(user) do
conn
|> put_resp_header("content-type", "application/activity+json")
|> json(UserView.render("outbox.json", %{user: user, max_id: params["max_id"]}))
@ -195,7 +195,7 @@ def inbox(conn, params) do
def relay(conn, _params) do
with %User{} = user <- Relay.get_actor(),
{:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
{:ok, user} <- User.ensure_keys_present(user) do
conn
|> put_resp_header("content-type", "application/activity+json")
|> json(UserView.render("user.json", %{user: user}))

11
lib/pleroma/web/activity_pub/views/user_view.ex
View File

@ -5,6 +5,7 @@
defmodule Pleroma.Web.ActivityPub.UserView do
use Pleroma.Web, :view
alias Pleroma.Keys
alias Pleroma.Repo
alias Pleroma.User
alias Pleroma.Web.ActivityPub.ActivityPub
@ -12,8 +13,6 @@ defmodule Pleroma.Web.ActivityPub.UserView do
alias Pleroma.Web.ActivityPub.Utils
alias Pleroma.Web.Endpoint
alias Pleroma.Web.Router.Helpers
alias Pleroma.Web.Salmon
alias Pleroma.Web.WebFinger
import Ecto.Query
@ -34,8 +33,8 @@ def render("endpoints.json", _), do: %{}
# the instance itself is not a Person, but instead an Application
def render("user.json", %{user: %{nickname: nil} = user}) do
{:ok, user} = WebFinger.ensure_keys_present(user)
{:ok, _, public_key} = Salmon.keys_from_pem(user.info.keys)
{:ok, user} = User.ensure_keys_present(user)
{:ok, _, public_key} = Keys.keys_from_pem(user.info.keys)
public_key = :public_key.pem_entry_encode(:SubjectPublicKeyInfo, public_key)
public_key = :public_key.pem_encode([public_key])
@ -62,8 +61,8 @@ def render("user.json", %{user: %{nickname: nil} = user}) do
end
def render("user.json", %{user: user}) do
{:ok, user} = WebFinger.ensure_keys_present(user)
{:ok, _, public_key} = Salmon.keys_from_pem(user.info.keys)
{:ok, user} = User.ensure_keys_present(user)
{:ok, _, public_key} = Keys.keys_from_pem(user.info.keys)
public_key = :public_key.pem_entry_encode(:SubjectPublicKeyInfo, public_key)
public_key = :public_key.pem_encode([public_key])

6
lib/pleroma/web/federator/federator.ex
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@ -11,7 +11,6 @@ defmodule Pleroma.Web.Federator do
alias Pleroma.Web.ActivityPub.Utils
alias Pleroma.Web.Federator.Publisher
alias Pleroma.Web.Federator.RetryQueue
alias Pleroma.Web.WebFinger
alias Pleroma.Web.Websub
require Logger
@ -77,9 +76,8 @@ def perform(:request_subscription, websub) do
def perform(:publish, activity) do
Logger.debug(fn -> "Running publish for #{activity.data["id"]}" end)
with actor when not is_nil(actor) <- User.get_cached_by_ap_id(activity.data["actor"]) do
{:ok, actor} = WebFinger.ensure_keys_present(actor)
with %User{} = actor <- User.get_cached_by_ap_id(activity.data["actor"]),
{:ok, actor} <- User.ensure_keys_present(actor) do
Publisher.publish(actor, activity)
end
end

44
lib/pleroma/web/salmon/salmon.ex
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@ -10,6 +10,7 @@ defmodule Pleroma.Web.Salmon do
use Bitwise
alias Pleroma.Activity
alias Pleroma.Keys
alias Pleroma.Instances
alias Pleroma.User
alias Pleroma.Web.ActivityPub.Visibility
@ -89,45 +90,6 @@ def encode_key({:RSAPublicKey, modulus, exponent}) do
"RSA.#{modulus_enc}.#{exponent_enc}"
end
# Native generation of RSA keys is only available since OTP 20+ and in default build conditions
# We try at compile time to generate natively an RSA key otherwise we fallback on the old way.
try do
_ = :public_key.generate_key({:rsa, 2048, 65_537})
def generate_rsa_pem do
key = :public_key.generate_key({:rsa, 2048, 65_537})
entry = :public_key.pem_entry_encode(:RSAPrivateKey, key)
pem = :public_key.pem_encode([entry]) |> String.trim_trailing()
{:ok, pem}
end
rescue
_ ->
def generate_rsa_pem do
port = Port.open({:spawn, "openssl genrsa"}, [:binary])
{:ok, pem} =
receive do
{^port, {:data, pem}} -> {:ok, pem}
end
Port.close(port)
if Regex.match?(~r/RSA PRIVATE KEY/, pem) do
{:ok, pem}
else
:error
end
end
end
def keys_from_pem(pem) do
[private_key_code] = :public_key.pem_decode(pem)
private_key = :public_key.pem_entry_decode(private_key_code)
{:RSAPrivateKey, _, modulus, exponent, _, _, _, _, _, _, _} = private_key
public_key = {:RSAPublicKey, modulus, exponent}
{:ok, private_key, public_key}
end
def encode(private_key, doc) do
type = "application/atom+xml"
encoding = "base64url"
@ -227,7 +189,7 @@ def publish(%{info: %{keys: keys}} = user, %{data: %{"type" => type}} = activity
|> :xmerl.export_simple(:xmerl_xml)
|> to_string
{:ok, private, _} = keys_from_pem(keys)
{:ok, private, _} = Keys.keys_from_pem(keys)
{:ok, feed} = encode(private, feed)
remote_users = remote_users(activity)
@ -253,7 +215,7 @@ def publish(%{info: %{keys: keys}} = user, %{data: %{"type" => type}} = activity
def publish(%{id: id}, _), do: Logger.debug(fn -> "Keys missing for user #{id}" end)
def gather_webfinger_links(%User{} = user) do
{:ok, _private, public} = keys_from_pem(user.info.keys)
{:ok, _private, public} = Keys.keys_from_pem(user.info.keys)
magic_key = encode_key(public)
[

26
lib/pleroma/web/web_finger/web_finger.ex
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@ -8,7 +8,6 @@ defmodule Pleroma.Web.WebFinger do
alias Pleroma.User
alias Pleroma.Web
alias Pleroma.Web.Federator.Publisher
alias Pleroma.Web.Salmon
alias Pleroma.Web.XML
alias Pleroma.XmlBuilder
require Jason
@ -61,7 +60,7 @@ defp gather_links(%User{} = user) do
end
def represent_user(user, "JSON") do
{:ok, user} = ensure_keys_present(user)
{:ok, user} = User.ensure_keys_present(user)
%{
"subject" => "acct:#{user.nickname}@#{Pleroma.Web.Endpoint.host()}",
@ -71,7 +70,7 @@ def represent_user(user, "JSON") do
end
def represent_user(user, "XML") do
{:ok, user} = ensure_keys_present(user)
{:ok, user} = User.ensure_keys_present(user)
links =
gather_links(user)
@ -88,27 +87,6 @@ def represent_user(user, "XML") do
|> XmlBuilder.to_doc()
end
# This seems a better fit in Salmon
def ensure_keys_present(user) do
info = user.info
if info.keys do
{:ok, user}
else
{:ok, pem} = Salmon.generate_rsa_pem()
info_cng =
info
|> User.Info.set_keys(pem)
cng =
Ecto.Changeset.change(user)
|> Ecto.Changeset.put_embed(:info, info_cng)
User.update_and_set_cache(cng)
end
end
defp get_magic_key(magic_key) do
"data:application/magic-public-key," <> magic_key = magic_key
{:ok, magic_key}

20
test/keys_test.exs Normal file
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@ -0,0 +1,20 @@
defmodule Pleroma.KeysTest do
use Pleroma.DataCase
alias Pleroma.Keys
test "generates an RSA private key pem" do
{:ok, key} = Keys.generate_rsa_pem()
assert is_binary(key)
assert Regex.match?(~r/RSA/, key)
end
test "returns a public and private key from a pem" do
pem = File.read!("test/fixtures/private_key.pem")
{:ok, private, public} = Keys.keys_from_pem(pem)
assert elem(private, 0) == :RSAPrivateKey
assert elem(public, 0) == :RSAPublicKey
end
end

15
test/user_test.exs
View File

@ -1251,4 +1251,19 @@ test "if user is unconfirmed" do
refute user.info.confirmation_token
end
end
describe "ensure_keys_present" do
test "it creates keys for a user and stores them in info" do
user = insert(:user)
refute is_binary(user.info.keys)
{:ok, user} = User.ensure_keys_present(user)
assert is_binary(user.info.keys)
end
test "it doesn't create keys if there already are some" do
user = insert(:user, %{info: %{keys: "xxx"}})
{:ok, user} = User.ensure_keys_present(user)
assert user.info.keys == "xxx"
end
end
end

2
test/web/activity_pub/activity_pub_test.exs
View File

@ -1005,7 +1005,7 @@ test "it filters broken threads" do
describe "update" do
test "it creates an update activity with the new user data" do
user = insert(:user)
{:ok, user} = Pleroma.Web.WebFinger.ensure_keys_present(user)
{:ok, user} = User.ensure_keys_present(user)
user_data = Pleroma.Web.ActivityPub.UserView.render("user.json", %{user: user})
{:ok, update} =

13
test/web/activity_pub/views/user_view_test.exs
View File

@ -2,11 +2,12 @@ defmodule Pleroma.Web.ActivityPub.UserViewTest do
use Pleroma.DataCase
import Pleroma.Factory
alias Pleroma.User
alias Pleroma.Web.ActivityPub.UserView
test "Renders a user, including the public key" do
user = insert(:user)
{:ok, user} = Pleroma.Web.WebFinger.ensure_keys_present(user)
{:ok, user} = User.ensure_keys_present(user)
result = UserView.render("user.json", %{user: user})
@ -18,7 +19,7 @@ test "Renders a user, including the public key" do
test "Does not add an avatar image if the user hasn't set one" do
user = insert(:user)
{:ok, user} = Pleroma.Web.WebFinger.ensure_keys_present(user)
{:ok, user} = User.ensure_keys_present(user)
result = UserView.render("user.json", %{user: user})
refute result["icon"]
@ -32,7 +33,7 @@ test "Does not add an avatar image if the user hasn't set one" do
}
)
{:ok, user} = Pleroma.Web.WebFinger.ensure_keys_present(user)
{:ok, user} = User.ensure_keys_present(user)
result = UserView.render("user.json", %{user: user})
assert result["icon"]["url"] == "https://someurl"
@ -42,7 +43,7 @@ test "Does not add an avatar image if the user hasn't set one" do
describe "endpoints" do
test "local users have a usable endpoints structure" do
user = insert(:user)
{:ok, user} = Pleroma.Web.WebFinger.ensure_keys_present(user)
{:ok, user} = User.ensure_keys_present(user)
result = UserView.render("user.json", %{user: user})
@ -58,7 +59,7 @@ test "local users have a usable endpoints structure" do
test "remote users have an empty endpoints structure" do
user = insert(:user, local: false)
{:ok, user} = Pleroma.Web.WebFinger.ensure_keys_present(user)
{:ok, user} = User.ensure_keys_present(user)
result = UserView.render("user.json", %{user: user})
@ -68,7 +69,7 @@ test "remote users have an empty endpoints structure" do
test "instance users do not expose oAuth endpoints" do
user = insert(:user, nickname: nil, local: true)
{:ok, user} = Pleroma.Web.WebFinger.ensure_keys_present(user)
{:ok, user} = User.ensure_keys_present(user)
result = UserView.render("user.json", %{user: user})

19
test/web/salmon/salmon_test.exs
View File

@ -5,6 +5,7 @@
defmodule Pleroma.Web.Salmon.SalmonTest do
use Pleroma.DataCase
alias Pleroma.Activity
alias Pleroma.Keys
alias Pleroma.Repo
alias Pleroma.User
alias Pleroma.Web.Federator.Publisher
@ -34,12 +35,6 @@ test "errors on wrong magic key" do
assert Salmon.decode_and_validate(@wrong_magickey, salmon) == :error
end
test "generates an RSA private key pem" do
{:ok, key} = Salmon.generate_rsa_pem()
assert is_binary(key)
assert Regex.match?(~r/RSA/, key)
end
test "it encodes a magic key from a public key" do
key = Salmon.decode_key(@magickey)
magic_key = Salmon.encode_key(key)
@ -51,18 +46,10 @@ test "it decodes a friendica public key" do
_key = Salmon.decode_key(@magickey_friendica)
end
test "returns a public and private key from a pem" do
pem = File.read!("test/fixtures/private_key.pem")
{:ok, private, public} = Salmon.keys_from_pem(pem)
assert elem(private, 0) == :RSAPrivateKey
assert elem(public, 0) == :RSAPublicKey
end
test "encodes an xml payload with a private key" do
doc = File.read!("test/fixtures/incoming_note_activity.xml")
pem = File.read!("test/fixtures/private_key.pem")
{:ok, private, public} = Salmon.keys_from_pem(pem)
{:ok, private, public} = Keys.keys_from_pem(pem)
# Let's try a roundtrip.
{:ok, salmon} = Salmon.encode(private, doc)
@ -105,7 +92,7 @@ test "it gets a magic key" do
{:ok, activity} = Repo.insert(%Activity{data: activity_data, recipients: activity_data["to"]})
user = User.get_cached_by_ap_id(activity.data["actor"])
{:ok, user} = Pleroma.Web.WebFinger.ensure_keys_present(user)
{:ok, user} = User.ensure_keys_present(user)
Salmon.publish(user, activity)

15
test/web/web_finger/web_finger_test.exs
View File

@ -105,19 +105,4 @@ test "it gets the xrd endpoint for statusnet" do
assert template == "http://status.alpicola.com/main/xrd?uri={uri}"
end
end
describe "ensure_keys_present" do
test "it creates keys for a user and stores them in info" do
user = insert(:user)
refute is_binary(user.info.keys)
{:ok, user} = WebFinger.ensure_keys_present(user)
assert is_binary(user.info.keys)
end
test "it doesn't create keys if there already are some" do
user = insert(:user, %{info: %{keys: "xxx"}})
{:ok, user} = WebFinger.ensure_keys_present(user)
assert user.info.keys == "xxx"
end
end
end