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# ----------------------------------------------------------------------
#
# ejabberd, Copyright (C) 2002-2017 ProcessOne
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# ----------------------------------------------------------------------
defmodule EjabberdCyrsaslTest do
@author "pawel@process-one.net"
use ExUnit.Case, async: true
setup_all do
:ok = :ejabberd.start_app(:lager)
:p1_sha.load_nif()
:mnesia.start
:ejabberd_mnesia.start
:ok = start_module(:stringprep)
start_module(:jid)
:ejabberd_hooks.start_link
:ok = :ejabberd_config.start(["domain1"], [])
{:ok, _} = :cyrsasl.start_link
cyrstate = :cyrsasl.server_new("domain1", "domain1", "domain1", :ok, &get_password/1,
&check_password/3, &check_password_digest/5)
setup_anonymous_mocks()
{:ok, cyrstate: cyrstate}
end
test "Plain text (correct user and pass)", context do
step1 = :cyrsasl.server_start(context[:cyrstate], "PLAIN", <<0,"user1",0,"pass">>)
assert {:ok, _} = step1
{:ok, kv} = step1
assert kv[:authzid] == "user1", "got correct user"
end
test "Plain text (correct user wrong pass)", context do
step1 = :cyrsasl.server_start(context[:cyrstate], "PLAIN", <<0,"user1",0,"badpass">>)
assert step1 == {:error, :not_authorized, "user1"}
end
test "Plain text (wrong user wrong pass)", context do
step1 = :cyrsasl.server_start(context[:cyrstate], "PLAIN", <<0,"nouser1",0,"badpass">>)
assert step1 == {:error, :not_authorized, "nouser1"}
end
test "Anonymous", context do
step1 = :cyrsasl.server_start(context[:cyrstate], "ANONYMOUS", "domain1")
assert {:ok, _} = step1
end
test "Digest-MD5 (correct user and pass)", context do
assert {:ok, _list} = process_digest_md5(context[:cyrstate], "user1", "domain1", "pass")
end
test "Digest-MD5 (correct user wrong pass)", context do
assert {:error, :not_authorized, "user1"} = process_digest_md5(context[:cyrstate], "user1", "domain1", "badpass")
end
test "Digest-MD5 (wrong user correct pass)", context do
assert {:error, :not_authorized, "baduser"} = process_digest_md5(context[:cyrstate], "baduser", "domain1", "pass")
end
test "Digest-MD5 (wrong user and pass)", context do
assert {:error, :not_authorized, "baduser"} = process_digest_md5(context[:cyrstate], "baduser", "domain1", "badpass")
end
defp process_digest_md5(cyrstate, user, domain, pass) do
assert {:continue, init_str, state1} = :cyrsasl.server_start(cyrstate, "DIGEST-MD5", "")
assert [_, nonce] = Regex.run(~r/nonce="(.*?)"/, init_str)
digest_uri = "xmpp/#{domain}"
cnonce = "abcd"
nc = "00000001"
response_hash = calc_digest_md5(user, domain, pass, nc, nonce, cnonce)
response = "username=\"#{user}\",realm=\"#{domain}\",nonce=\"#{nonce}\",cnonce=\"#{cnonce}\"," <>
"nc=\"#{nc}\",qop=auth,digest-uri=\"#{digest_uri}\",response=\"#{response_hash}\"," <>
"charset=utf-8,algorithm=md5-sess"
case :cyrsasl.server_step(state1, response) do
{:continue, _calc_str, state2} -> :cyrsasl.server_step(state2, "")
other -> other
end
end
defp calc_digest_md5(user, domain, pass, nc, nonce, cnonce) do
digest_uri = "xmpp/#{domain}"
a0 = "#{user}:#{domain}:#{pass}"
a1 = "#{str_md5(a0)}:#{nonce}:#{cnonce}"
a2 = "AUTHENTICATE:#{digest_uri}"
hex_md5("#{hex_md5(a1)}:#{nonce}:#{nc}:#{cnonce}:auth:#{hex_md5(a2)}")
end
defp str_md5(str) do
:erlang.md5(str)
end
defp hex_md5(str) do
:p1_sha.to_hexlist(:erlang.md5(str))
end
defp setup_anonymous_mocks() do
:meck.unload
mock(:ejabberd_auth_anonymous, :is_sasl_anonymous_enabled,
fn (_host) ->
true
end)
mock(:ejabberd_auth, :user_exists,
fn (user, domain) ->
domain == "domain1" and get_password(user) != {:false, :internal}
end)
end
defp start_module(module) do
case apply(module, :start, []) do
:ok -> :ok
{:error, {:already_started, _}} -> :ok
other -> other
end
end
defp get_password(user) do
if user == "user1" or user == "user2" do
{"pass", :internal}
else
{:false, :internal}
end
end
defp check_password(_user, authzid, pass) do
case get_password(authzid) do
{^pass, mod} ->
{true, mod}
_ ->
false
end
end
defp check_password_digest(_user, authzid, _pass, digest, digest_gen) do
case get_password(authzid) do
{:false, _} ->
false
{spass, mod} ->
v = digest_gen.(spass)
if v == digest do
{true, mod}
else
false
end
end
end
defp mock(module, function, fun) do
try do
:meck.new(module, [:non_strict])
catch
:error, {:already_started, _pid} -> :ok
end
:meck.expect(module, function, fun)
end
end
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