Simplify AuthenticationPlug

This commit is contained in:
lain 2018-09-05 18:53:38 +02:00
parent 9a96c93be7
commit 32465b9939
2 changed files with 55 additions and 268 deletions

View file

@ -9,71 +9,32 @@ def init(options) do
def call(%{assigns: %{user: %User{}}} = conn, _), do: conn
def call(conn, opts) do
with {:ok, username, password} <- decode_header(conn),
{:ok, user} <- opts[:fetcher].(username),
false <- !!user.info["deactivated"],
saved_user_id <- get_session(conn, :user_id),
legacy_password <- String.starts_with?(user.password_hash, "$6$"),
update_legacy_password <-
!(Map.has_key?(opts, :update_legacy_password) && opts[:update_legacy_password] == false),
{:ok, verified_user} <- verify(user, password, saved_user_id) do
if legacy_password and update_legacy_password do
User.reset_password(verified_user, %{
:password => password,
:password_confirmation => password
})
end
def call(
%{
assigns: %{
auth_user: %{password_hash: password_hash} = auth_user,
auth_credentials: %{password: password}
}
} = conn,
_
) do
if Pbkdf2.checkpw(password, password_hash) do
conn
|> assign(:user, verified_user)
|> put_session(:user_id, verified_user.id)
|> assign(:user, auth_user)
else
_ -> conn |> halt_or_continue(opts)
conn
end
end
# Short-circuit if we have a cookie with the id for the given user.
defp verify(%{id: id} = user, _password, id) do
{:ok, user}
end
defp verify(nil, _password, _user_id) do
def call(
%{
assigns: %{
auth_credentials: %{password: password}
}
} = conn,
_
) do
Pbkdf2.dummy_checkpw()
:error
end
defp verify(user, password, _user_id) do
valid =
if String.starts_with?(user.password_hash, "$6$") do
:crypt.crypt(password, user.password_hash) == user.password_hash
else
Pbkdf2.checkpw(password, user.password_hash)
end
if valid do
{:ok, user}
else
:error
end
end
defp decode_header(conn) do
with ["Basic " <> header] <- get_req_header(conn, "authorization"),
{:ok, userinfo} <- Base.decode64(header),
[username, password] <- String.split(userinfo, ":", parts: 2) do
{:ok, username, password}
end
end
defp halt_or_continue(conn, %{optional: true}) do
conn |> assign(:user, nil)
end
defp halt_or_continue(conn, _) do
conn
|> put_resp_content_type("application/json")
|> send_resp(403, Jason.encode!(%{error: "Invalid credentials."}))
|> halt
end
end

View file

@ -4,224 +4,50 @@ defmodule Pleroma.Plugs.AuthenticationPlugTest do
alias Pleroma.Plugs.AuthenticationPlug
alias Pleroma.User
defp fetch_nil(_name) do
{:ok, nil}
setup %{conn: conn} do
user = %User{
id: 1,
name: "dude",
password_hash: Comeonin.Pbkdf2.hashpwsalt("guy")
}
conn =
conn
|> assign(:auth_user, user)
%{user: user, conn: conn}
end
@user %User{
id: 1,
name: "dude",
password_hash: Comeonin.Pbkdf2.hashpwsalt("guy")
}
test "it does nothing if a user is assigned", %{conn: conn} do
conn =
conn
|> assign(:user, %User{})
@deactivated %User{
id: 1,
name: "dude",
password_hash: Comeonin.Pbkdf2.hashpwsalt("guy"),
info: %{"deactivated" => true}
}
ret_conn =
conn
|> AuthenticationPlug.call(%{})
@legacy %User{
id: 1,
name: "dude",
password_hash:
"$6$9psBWV8gxkGOZWBz$PmfCycChoxeJ3GgGzwvhlgacb9mUoZ.KUXNCssekER4SJ7bOK53uXrHNb2e4i8yPFgSKyzaW9CcmrDXWIEMtD1"
}
@session_opts [
store: :cookie,
key: "_test",
signing_salt: "cooldude"
]
defp fetch_user(_name) do
{:ok, @user}
assert ret_conn == conn
end
defp basic_auth_enc(username, password) do
"Basic " <> Base.encode64("#{username}:#{password}")
test "with a correct password in the credentials, it assigns the auth_user", %{conn: conn} do
conn =
conn
|> assign(:auth_credentials, %{password: "guy"})
|> AuthenticationPlug.call(%{})
assert conn.assigns.user == conn.assigns.auth_user
end
describe "without an authorization header" do
test "it halts the application" do
conn =
build_conn()
|> Plug.Session.call(Plug.Session.init(@session_opts))
|> fetch_session
|> AuthenticationPlug.call(%{})
test "with a wrong password in the credentials, it does nothing", %{conn: conn} do
conn =
conn
|> assign(:auth_credentials, %{password: "wrong"})
assert conn.status == 403
assert conn.halted == true
end
ret_conn =
conn
|> AuthenticationPlug.call(%{})
test "it assigns a nil user if the 'optional' option is used" do
conn =
build_conn()
|> Plug.Session.call(Plug.Session.init(@session_opts))
|> fetch_session
|> AuthenticationPlug.call(%{optional: true})
assert %{user: nil} == conn.assigns
end
end
describe "with an authorization header for a nonexisting user" do
test "it halts the application" do
conn =
build_conn()
|> Plug.Session.call(Plug.Session.init(@session_opts))
|> fetch_session
|> AuthenticationPlug.call(%{fetcher: &fetch_nil/1})
assert conn.status == 403
assert conn.halted == true
end
test "it assigns a nil user if the 'optional' option is used" do
conn =
build_conn()
|> Plug.Session.call(Plug.Session.init(@session_opts))
|> fetch_session
|> AuthenticationPlug.call(%{optional: true, fetcher: &fetch_nil/1})
assert %{user: nil} == conn.assigns
end
end
describe "with an incorrect authorization header for a enxisting user" do
test "it halts the application" do
opts = %{
fetcher: &fetch_user/1
}
header = basic_auth_enc("dude", "man")
conn =
build_conn()
|> Plug.Session.call(Plug.Session.init(@session_opts))
|> fetch_session
|> put_req_header("authorization", header)
|> AuthenticationPlug.call(opts)
assert conn.status == 403
assert conn.halted == true
end
test "it assigns a nil user if the 'optional' option is used" do
opts = %{
optional: true,
fetcher: &fetch_user/1
}
header = basic_auth_enc("dude", "man")
conn =
build_conn()
|> Plug.Session.call(Plug.Session.init(@session_opts))
|> fetch_session
|> put_req_header("authorization", header)
|> AuthenticationPlug.call(opts)
assert %{user: nil} == conn.assigns
end
end
describe "with a correct authorization header for an existing user" do
test "it assigns the user", %{conn: conn} do
opts = %{
optional: true,
fetcher: &fetch_user/1
}
header = basic_auth_enc("dude", "guy")
conn =
conn
|> Plug.Session.call(Plug.Session.init(@session_opts))
|> fetch_session
|> put_req_header("authorization", header)
|> AuthenticationPlug.call(opts)
assert %{user: @user} == conn.assigns
assert get_session(conn, :user_id) == @user.id
assert conn.halted == false
end
test "it assigns legacy user", %{conn: conn} do
opts = %{
optional: true,
fetcher: fn _ -> {:ok, @legacy} end,
update_legacy_password: false
}
header = basic_auth_enc("dude", "password")
conn =
conn
|> Plug.Session.call(Plug.Session.init(@session_opts))
|> fetch_session
|> put_req_header("authorization", header)
|> AuthenticationPlug.call(opts)
assert %{user: @legacy} == conn.assigns
assert get_session(conn, :user_id) == @legacy.id
assert conn.halted == false
end
end
describe "with a correct authorization header for an deactiviated user" do
test "it halts the appication", %{conn: conn} do
opts = %{
optional: false,
fetcher: fn _ -> @deactivated end
}
header = basic_auth_enc("dude", "guy")
conn =
conn
|> Plug.Session.call(Plug.Session.init(@session_opts))
|> fetch_session
|> put_req_header("authorization", header)
|> AuthenticationPlug.call(opts)
assert conn.status == 403
assert conn.halted == true
end
end
describe "with a user_id in the session for an existing user" do
test "it assigns the user", %{conn: conn} do
opts = %{
optional: true,
fetcher: &fetch_user/1
}
header = basic_auth_enc("dude", "THIS IS WRONG")
conn =
conn
|> Plug.Session.call(Plug.Session.init(@session_opts))
|> fetch_session
|> put_session(:user_id, @user.id)
|> put_req_header("authorization", header)
|> AuthenticationPlug.call(opts)
assert %{user: @user} == conn.assigns
assert get_session(conn, :user_id) == @user.id
assert conn.halted == false
end
end
describe "with an assigned user" do
test "it does nothing, returning the incoming conn", %{conn: conn} do
conn =
conn
|> assign(:user, @user)
conn_result = AuthenticationPlug.call(conn, %{})
assert conn == conn_result
end
assert conn == ret_conn
end
end