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Add server_name_indication_host config option #3510

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merged 6 commits into from
Jan 26, 2022
Merged

Add server_name_indication_host config option #3510

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c5869b9
Add server_name_indication_host config option
gustawlippa Jan 17, 2022
6fcce69
Test server_name_indication_host
gustawlippa Jan 20, 2022
483b738
Document server_name_indication_host option
gustawlippa Jan 20, 2022
1c17815
Refactor TLS SNI parsing
gustawlippa Jan 25, 2022
8365480
Update doc/configuration/outgoing-connections.md
gustawlippa Jan 26, 2022
f175761
Shorten lines
gustawlippa Jan 26, 2022
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17 changes: 12 additions & 5 deletions doc/configuration/outgoing-connections.md
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Original file line number Diff line number Diff line change
Expand Up @@ -195,7 +195,7 @@ Logical database index (zero-based).

## Riak options

Currently only one Riak connection pool can exist for each supported XMPP host (the default pool).
Currently, only one Riak connection pool can exist for each supported XMPP host (the default pool).

!!! WARNING
`riak` backend is not compatible with `available_worker` strategy.
Expand Down Expand Up @@ -245,7 +245,7 @@ Cassandra also supports all TLS-specific options described in the TLS section.

## Elasticsearch options

Currently only one pool tagged `default` can be used.
Currently, only one pool tagged `default` can be used.

### `outgoing_pools.elastic.default.connection.host`
* **Syntax:** string
Expand Down Expand Up @@ -363,7 +363,7 @@ Reconnect interval after a failed connection.
* **Default:** `"none"`
* **Example:** `encrypt = "tls"`

LDAP also supports all TLS-specific options described in the TLS section (provided `encrypt` is set to `tls`).
LDAP also supports all TLS-specific options described in the TLS section (provided `encrypt` is set to `tls`).

## TLS options

Expand Down Expand Up @@ -435,7 +435,14 @@ Cipher suites to use. For allowed values, see the [Erlang/OTP SSL documentation]

### `outgoing_pools.*.*.connection.tls.server_name_indication`
* **Syntax:** boolean
* **Default:** `true`
* **Default:** `false`, but enabled if the `verify_peer` option is set to `true`
* **Example:** `tls.server_name_indication = false`

Enables SNI extension to TLS protocol.
Enables SNI extension to TLS protocol. If set to `true`, the `server_name_indication_host` option should be provided.

### `outgoing_pools.*.*.connection.tls.server_name_indication_host`
* **Syntax:** string
* **Default:** not set
* **Example:** `tls.server_name_indication_host = "domain.com"`

Domain against which the certificates will be checked, using SNI.
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36 changes: 29 additions & 7 deletions src/config/mongoose_config_spec.erl
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Expand Up @@ -16,6 +16,7 @@
process_listener/2,
process_verify_peer/1,
process_sni/1,
process_tls_sni/1,
process_xmpp_tls/1,
process_fast_tls/1,
process_http_handler/2,
Expand Down Expand Up @@ -556,7 +557,8 @@ outgoing_pool_connection(<<"cassandra">>) ->
required = all,
process = fun ?MODULE:process_cassandra_auth/1},
<<"tls">> => #section{items = tls_items(),
wrap = {kv, ssl}}
wrap = {kv, ssl},
process = fun ?MODULE:process_tls_sni/1}
}
};
outgoing_pool_connection(<<"elastic">>) ->
Expand All @@ -577,7 +579,8 @@ outgoing_pool_connection(<<"http">>) ->
<<"request_timeout">> => #option{type = integer,
validate = non_negative},
<<"tls">> => #section{items = tls_items(),
wrap = {kv, http_opts}}
wrap = {kv, http_opts},
process = fun ?MODULE:process_tls_sni/1}
}
};
outgoing_pool_connection(<<"ldap">>) ->
Expand All @@ -594,7 +597,8 @@ outgoing_pool_connection(<<"ldap">>) ->
<<"connect_interval">> => #option{type = integer,
validate = positive},
<<"tls">> => #section{items = tls_items(),
wrap = {kv, tls_options}}
wrap = {kv, tls_options},
process = fun ?MODULE:process_tls_sni/1}
}
};
outgoing_pool_connection(<<"rabbit">>) ->
Expand Down Expand Up @@ -694,8 +698,9 @@ riak_credentials() ->
sql_tls() ->
Items = tls_items(),
#section{
items = Items#{<<"required">> => #option{type = boolean}}
}.
items = Items#{<<"required">> => #option{type = boolean}},
process = fun ?MODULE:process_tls_sni/1
}.

tls_items() ->
#{<<"verify_peer">> => #option{type = boolean,
Expand All @@ -712,6 +717,8 @@ tls_items() ->
<<"password">> => #option{type = string},
<<"server_name_indication">> => #option{type = boolean,
process = fun ?MODULE:process_sni/1},
<<"server_name_indication_host">> => #option{type = string,
validate = non_empty},
<<"ciphers">> => #option{type = string},
<<"versions">> => #list{items = #option{type = atom}}
}.
Expand Down Expand Up @@ -1045,7 +1052,9 @@ get_all_hosts_and_host_types(General) ->
end, General).

process_sni(false) ->
disable.
disable;
process_sni(true) ->
enable.
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process_verify_peer(false) -> verify_none;
process_verify_peer(true) -> verify_peer.
Expand Down Expand Up @@ -1218,12 +1227,25 @@ ssl_opts(pgsql, Opts) -> [{ssl_opts, Opts}];
ssl_opts(mysql, Opts) -> Opts.

process_riak_tls(KVs) ->
{[CACertFileOpts], SSLOpts} = proplists:split(KVs, [cacertfile]),
KVsWithSNI = process_tls_sni(KVs),
{[CACertFileOpts], SSLOpts} = proplists:split(KVsWithSNI, [cacertfile]),
riak_ssl(SSLOpts) ++ CACertFileOpts.

riak_ssl([]) -> [];
riak_ssl(Opts) -> [{ssl_opts, Opts}].

process_tls_sni(KVs) ->
% the SSL library expects either the atom `disabled` or a string with the SNI host
% as value for `server_name_indication`
case proplists:get_value(server_name_indication, KVs, disable) of
enable ->
SNIHost = proplists:get_value(server_name_indication_host, KVs),
KVs1 = proplists:delete(server_name_indication, KVs),
lists:keyreplace(server_name_indication_host, 1, KVs1, {server_name_indication, SNIHost});
disable ->
proplists:delete(server_name_indication_host, KVs)
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end.

process_riak_credentials(KVs) ->
{[[{user, User}], [{password, Pass}]], []} = proplists:split(KVs, [user, password]),
{User, Pass}.
Expand Down
29 changes: 29 additions & 0 deletions test/config_parser_SUITE.erl
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Expand Up @@ -1138,6 +1138,31 @@ pool_http_request_timeout(_Config) ->
pool_http_tls(_Config) ->
?cfg(pool_config({http, global, default, [], [{http_opts, [{certfile, "cert.pem"} ]}]}),
pool_conn_raw(<<"http">>, #{<<"tls">> => #{<<"certfile">> => <<"cert.pem">>}})),
?cfg(pool_config({http, global, default, [], [{http_opts, [{certfile, "cert.pem"},
{verify, verify_peer},
{cacertfile, "priv/ca.pem"},
{server_name_indication, disable}]}]}),
pool_conn_raw(<<"http">>, #{<<"tls">> => #{<<"certfile">> => <<"cert.pem">>,
<<"verify_peer">> => true,
<<"cacertfile">> => <<"priv/ca.pem">>,
<<"server_name_indication">> => false}})),
?cfg(pool_config({http, global, default, [], [{http_opts, [{certfile, "cert.pem"},
{verify, verify_peer},
{cacertfile, "priv/ca.pem"},
{server_name_indication, "domain.com"}]}]}),
pool_conn_raw(<<"http">>, #{<<"tls">> => #{<<"certfile">> => <<"cert.pem">>,
<<"verify_peer">> => true,
<<"cacertfile">> => <<"priv/ca.pem">>,
<<"server_name_indication">> => true,
<<"server_name_indication_host">> => <<"domain.com">>}})),
?cfg(pool_config({http, global, default, [], [{http_opts, [{verify, verify_peer},
{cacertfile, "priv/ca.pem"}]}]}),
pool_conn_raw(<<"http">>, #{<<"tls">> => #{<<"verify_peer">> => true,
<<"cacertfile">> => <<"priv/ca.pem">>}})),
?err(pool_conn_raw(<<"http">>, #{<<"tls">> => #{<<"verify_peer">> => true,
<<"cacertfile">> => <<"priv/ca.pem">>,
<<"server_name_indication">> => <<"domain.com">>,
<<"server_name_indication_host">> => <<"domain.com">>}})),
?err(pool_conn_raw(<<"http">>, #{<<"tls">> => #{<<"certfile">> => true}})),
?err(pool_conn_raw(<<"http">>, #{<<"tls">> => <<"secure">>})).

Expand Down Expand Up @@ -3216,6 +3241,8 @@ handle_listener(V1, V2) ->

handle_listener_option({tls, O1}, {tls, O2}) ->
compare_unordered_lists(O1, O2);
handle_listener_option({ssl, O1}, {ssl, O2}) ->
compare_unordered_lists(O1, O2);
handle_listener_option({modules, M1}, {modules, M2}) ->
compare_unordered_lists(M1, M2, fun handle_listener_module/2);
handle_listener_option({transport_options, O1}, {transport_options, O2}) ->
Expand Down Expand Up @@ -3260,6 +3287,8 @@ handle_conn_opt({server, {D1, H1, DB1, U1, P1, O1}},
?eq(U1, U2),
?eq(P1, P2),
compare_unordered_lists(O1, O2, fun handle_db_server_opt/2);
handle_conn_opt({http_opts, O1}, {http_opts, O2}) ->
compare_unordered_lists(O1, O2);
handle_conn_opt(V1, V2) -> ?eq(V1, V2).

handle_db_server_opt({ssl_opts, O1}, {ssl_opts, O2}) ->
Expand Down