%% %% %CopyrightBegin% %% %% Copyright Ericsson AB 1999-2019. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. %% You may obtain a copy of the License at %% %% http://www.apache.org/licenses/LICENSE-2.0 %% %% Unless required by applicable law or agreed to in writing, software %% distributed under the License is distributed on an "AS IS" BASIS, %% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %% See the License for the specific language governing permissions and %% limitations under the License. %% %% %CopyrightEnd% %% %% %%% Purpose : Main API module for SSL see also tls.erl and dtls.erl -module(ssl). -include_lib("public_key/include/public_key.hrl"). -include("ssl_internal.hrl"). -include("ssl_api.hrl"). -include("ssl_internal.hrl"). -include("ssl_record.hrl"). -include("ssl_cipher.hrl"). -include("ssl_handshake.hrl"). -include("ssl_srp.hrl"). %% Application handling -export([start/0, start/1, stop/0, clear_pem_cache/0]). %% Socket handling -export([connect/3, connect/2, connect/4, listen/2, transport_accept/1, transport_accept/2, handshake/1, handshake/2, handshake/3, handshake_continue/2, handshake_continue/3, handshake_cancel/1, ssl_accept/1, ssl_accept/2, ssl_accept/3, controlling_process/2, peername/1, peercert/1, sockname/1, close/1, close/2, shutdown/2, recv/2, recv/3, send/2, getopts/2, setopts/2, getstat/1, getstat/2 ]). %% SSL/TLS protocol handling -export([cipher_suites/0, cipher_suites/1, cipher_suites/2, filter_cipher_suites/2, prepend_cipher_suites/2, append_cipher_suites/2, eccs/0, eccs/1, versions/0, groups/0, groups/1, format_error/1, renegotiate/1, prf/5, negotiated_protocol/1, connection_information/1, connection_information/2]). %% Misc -export([handle_options/2, tls_version/1, new_ssl_options/3, suite_to_str/1]). -deprecated({ssl_accept, 1, eventually}). -deprecated({ssl_accept, 2, eventually}). -deprecated({ssl_accept, 3, eventually}). -export_type([socket/0, sslsocket/0, socket_option/0, active_msgs/0, host/0, tls_option/0, tls_client_option/0, tls_server_option/0, erl_cipher_suite/0, old_cipher_suite/0, ciphers/0, cipher/0, hash/0, key/0, kex_algo/0, prf_random/0, cipher_filters/0, sign_algo/0, protocol_version/0, protocol_version_tuple/0, protocol_extensions/0, session_id/0, error_alert/0, srp_param_type/0]). %% ------------------------------------------------------------------------------------------------------- -type socket() :: gen_tcp:socket(). % exported -type socket_option() :: gen_tcp:connect_option() | gen_tcp:listen_option() | gen_udp:option(). % exported -type sslsocket() :: any(). % exported -type tls_option() :: tls_client_option() | tls_server_option(). % exported -type tls_client_option() :: client_option() | common_option() | socket_option() | transport_option(). % exported -type tls_server_option() :: server_option() | common_option() | socket_option() | transport_option(). % exported -type active_msgs() :: {ssl, sslsocket(), Data::binary() | list()} | {ssl_closed, sslsocket()} | {ssl_error, sslsocket(), Reason::any()} | {ssl_passive, sslsocket()}. % exported -type transport_option() :: {cb_info, {CallbackModule::atom(), DataTag::atom(), ClosedTag::atom(), ErrTag::atom()}} | {cb_info, {CallbackModule::atom(), DataTag::atom(), ClosedTag::atom(), ErrTag::atom(), PassiveTag::atom()}}. -type host() :: hostname() | ip_address(). % exported -type hostname() :: string(). -type ip_address() :: inet:ip_address(). -type session_id() :: binary(). % exported -type protocol_version() :: tls_version() | dtls_version(). % exported -type protocol_version_tuple() :: tls_version_tuple() | dtls_version_tuple(). % exported -type tls_version() :: 'tlsv1.2' | 'tlsv1.3' | tls_legacy_version(). -type tls_version_tuple() :: {3,0} | {3,1} | {3,2} | {3,3} | {3,4}. -type dtls_version() :: 'dtlsv1.2' | dtls_legacy_version(). -type dtls_version_tuple() :: {254,254} | {254,253}. -type tls_legacy_version() :: tlsv1 | 'tlsv1.1' | sslv3. -type dtls_legacy_version() :: 'dtlsv1'. -type verify_type() :: verify_none | verify_peer. -type cipher() :: aes_128_cbc | aes_256_cbc | aes_128_gcm | aes_256_gcm | aes_128_ccm | aes_256_ccm | aes_128_ccm_8 | aes_256_ccm_8 | chacha20_poly1305 | null | legacy_cipher(). % exported -type legacy_cipher() :: rc4_128 | des_cbc | '3des_ede_cbc'. -type hash() :: sha | sha2() | legacy_hash() | null. % exported -type sha2() :: sha224 | sha256 | sha384 | sha512. -type legacy_hash() :: md5. -type sign_algo() :: rsa | dsa | ecdsa. % exported -type sign_scheme() :: rsa_pkcs1_sha256 | rsa_pkcs1_sha384 | rsa_pkcs1_sha512 | ecdsa_secp256r1_sha256 | ecdsa_secp384r1_sha384 | ecdsa_secp521r1_sha512 | rsa_pss_rsae_sha256 | rsa_pss_rsae_sha384 | rsa_pss_rsae_sha512 | rsa_pss_pss_sha256 | rsa_pss_pss_sha384 | rsa_pss_pss_sha512 | rsa_pkcs1_sha1 | ecdsa_sha1. -type kex_algo() :: rsa | dhe_rsa | dhe_dss | ecdhe_ecdsa | ecdh_ecdsa | ecdh_rsa | srp_rsa| srp_dss | psk | dhe_psk | rsa_psk | dh_anon | ecdh_anon | srp_anon | any | null. %% TLS 1.3 , exported -type erl_cipher_suite() :: #{key_exchange := kex_algo(), cipher := cipher(), mac := hash() | aead, prf := hash() | default_prf %% Old cipher suites, version dependent }. -type old_cipher_suite() :: {kex_algo(), cipher(), hash()} % Pre TLS 1.2 %% TLS 1.2, internally PRE TLS 1.2 will use default_prf | {kex_algo(), cipher(), hash() | aead, hash()}. -type named_curve() :: sect571r1 | sect571k1 | secp521r1 | brainpoolP512r1 | sect409k1 | sect409r1 | brainpoolP384r1 | secp384r1 | sect283k1 | sect283r1 | brainpoolP256r1 | secp256k1 | secp256r1 | sect239k1 | sect233k1 | sect233r1 | secp224k1 | secp224r1 | sect193r1 | sect193r2 | secp192k1 | secp192r1 | sect163k1 | sect163r1 | sect163r2 | secp160k1 | secp160r1 | secp160r2. -type group() :: secp256r1 | secp384r1 | secp521r1 | ffdhe2048 | ffdhe3072 | ffdhe4096 | ffdhe6144 | ffdhe8192. -type srp_param_type() :: srp_1024 | srp_1536 | srp_2048 | srp_3072 | srp_4096 | srp_6144 | srp_8192. % exported -type error_alert() :: {tls_alert, {tls_alert(), Description::string()}}. % exported -type tls_alert() :: close_notify | unexpected_message | bad_record_mac | record_overflow | handshake_failure | bad_certificate | unsupported_certificate | certificate_revoked | certificate_expired | certificate_unknown | illegal_parameter | unknown_ca | access_denied | decode_error | decrypt_error | export_restriction| protocol_version | insufficient_security | internal_error | inappropriate_fallback | user_canceled | no_renegotiation | unsupported_extension | certificate_unobtainable | unrecognized_name | bad_certificate_status_response | bad_certificate_hash_value | unknown_psk_identity | no_application_protocol. %% ------------------------------------------------------------------------------------------------------- -type common_option() :: {protocol, protocol()} | {handshake, handshake_completion()} | {cert, cert()} | {certfile, cert_pem()} | {key, key()} | {keyfile, key_pem()} | {password, key_password()} | {ciphers, cipher_suites()} | {eccs, [named_curve()]} | {signature_algs_cert, signature_schemes()} | {secure_renegotiate, secure_renegotiation()} | {depth, allowed_cert_chain_length()} | {verify_fun, custom_verify()} | {crl_check, crl_check()} | {crl_cache, crl_cache_opts()} | {max_handshake_size, handshake_size()} | {partial_chain, root_fun()} | {versions, protocol_versions()} | {user_lookup_fun, custom_user_lookup()} | {log_level, logging_level()} | {log_alert, log_alert()} | {hibernate_after, hibernate_after()} | {padding_check, padding_check()} | {beast_mitigation, beast_mitigation()} | {ssl_imp, ssl_imp()}. -type protocol() :: tls | dtls. -type handshake_completion() :: hello | full. -type cert() :: public_key:der_encoded(). -type cert_pem() :: file:filename(). -type key() :: {'RSAPrivateKey'| 'DSAPrivateKey' | 'ECPrivateKey' |'PrivateKeyInfo', public_key:der_encoded()} | #{algorithm := rsa | dss | ecdsa, engine := crypto:engine_ref(), key_id := crypto:key_id(), password => crypto:password()}. % exported -type key_pem() :: file:filename(). -type key_password() :: string(). -type cipher_suites() :: ciphers(). -type ciphers() :: [erl_cipher_suite()] | string(). % (according to old API) exported -type cipher_filters() :: list({key_exchange | cipher | mac | prf, algo_filter()}). % exported -type algo_filter() :: fun((kex_algo()|cipher()|hash()|aead|default_prf) -> true | false). -type secure_renegotiation() :: boolean(). -type allowed_cert_chain_length() :: integer(). -type custom_verify() :: {Verifyfun :: fun(), InitialUserState :: any()}. -type crl_check() :: boolean() | peer | best_effort. -type crl_cache_opts() :: [any()]. -type handshake_size() :: integer(). -type hibernate_after() :: timeout(). -type root_fun() :: fun(). -type protocol_versions() :: [protocol_version()]. -type signature_algs() :: [{hash(), sign_algo()}]. -type signature_schemes() :: [sign_scheme()]. -type custom_user_lookup() :: {Lookupfun :: fun(), UserState :: any()}. -type padding_check() :: boolean(). -type beast_mitigation() :: one_n_minus_one | zero_n | disabled. -type srp_identity() :: {Username :: string(), Password :: string()}. -type psk_identity() :: string(). -type log_alert() :: boolean(). -type logging_level() :: logger:level(). %% ------------------------------------------------------------------------------------------------------- -type client_option() :: {verify, client_verify_type()} | {reuse_session, client_reuse_session()} | {reuse_sessions, client_reuse_sessions()} | {cacerts, client_cacerts()} | {cacertfile, client_cafile()} | {alpn_advertised_protocols, client_alpn()} | {client_preferred_next_protocols, client_preferred_next_protocols()} | {psk_identity, client_psk_identity()} | {srp_identity, client_srp_identity()} | {server_name_indication, sni()} | {customize_hostname_check, customize_hostname_check()} | {signature_algs, client_signature_algs()} | {fallback, fallback()}. -type client_verify_type() :: verify_type(). -type client_reuse_session() :: session_id(). -type client_reuse_sessions() :: boolean() | save. -type client_cacerts() :: [public_key:der_encoded()]. -type client_cafile() :: file:filename(). -type app_level_protocol() :: binary(). -type client_alpn() :: [app_level_protocol()]. -type client_preferred_next_protocols() :: {Precedence :: server | client, ClientPrefs :: [app_level_protocol()]} | {Precedence :: server | client, ClientPrefs :: [app_level_protocol()], Default::app_level_protocol()}. -type client_psk_identity() :: psk_identity(). -type client_srp_identity() :: srp_identity(). -type customize_hostname_check() :: list(). -type sni() :: HostName :: hostname() | disable. -type client_signature_algs() :: signature_algs(). -type fallback() :: boolean(). -type ssl_imp() :: new | old. %% ------------------------------------------------------------------------------------------------------- -type server_option() :: {cacerts, server_cacerts()} | {cacertfile, server_cafile()} | {dh, dh_der()} | {dhfile, dh_file()} | {verify, server_verify_type()} | {fail_if_no_peer_cert, fail_if_no_peer_cert()} | {reuse_sessions, server_reuse_sessions()} | {reuse_session, server_reuse_session()} | {alpn_preferred_protocols, server_alpn()} | {next_protocols_advertised, server_next_protocol()} | {psk_identity, server_psk_identity()} | {honor_cipher_order, boolean()} | {sni_hosts, sni_hosts()} | {sni_fun, sni_fun()} | {honor_cipher_order, honor_cipher_order()} | {honor_ecc_order, honor_ecc_order()} | {client_renegotiation, client_renegotiation()}| {signature_algs, server_signature_algs()}. -type server_cacerts() :: [public_key:der_encoded()]. -type server_cafile() :: file:filename(). -type server_alpn() :: [app_level_protocol()]. -type server_next_protocol() :: [app_level_protocol()]. -type server_psk_identity() :: psk_identity(). -type dh_der() :: binary(). -type dh_file() :: file:filename(). -type server_verify_type() :: verify_type(). -type fail_if_no_peer_cert() :: boolean(). -type server_signature_algs() :: signature_algs(). -type server_reuse_session() :: fun(). -type server_reuse_sessions() :: boolean(). -type sni_hosts() :: [{hostname(), [server_option() | common_option()]}]. -type sni_fun() :: fun(). -type honor_cipher_order() :: boolean(). -type honor_ecc_order() :: boolean(). -type client_renegotiation() :: boolean(). %% ------------------------------------------------------------------------------------------------------- -type prf_random() :: client_random | server_random. % exported -type protocol_extensions() :: #{renegotiation_info => binary(), signature_algs => signature_algs(), alpn => app_level_protocol(), srp => binary(), next_protocol => app_level_protocol(), ec_point_formats => [0..2], elliptic_curves => [public_key:oid()], sni => hostname()}. % exported %% ------------------------------------------------------------------------------------------------------- %%%-------------------------------------------------------------------- %%% API %%%-------------------------------------------------------------------- %%-------------------------------------------------------------------- %% %% Description: Utility function that starts the ssl and applications %% that it depends on. %% see application(3) %%-------------------------------------------------------------------- -spec start() -> ok | {error, reason()}. start() -> start(temporary). -spec start(permanent | transient | temporary) -> ok | {error, reason()}. start(Type) -> case application:ensure_all_started(ssl, Type) of {ok, _} -> ok; Other -> Other end. %%-------------------------------------------------------------------- -spec stop() -> ok. %% %% Description: Stops the ssl application. %%-------------------------------------------------------------------- stop() -> application:stop(ssl). %%-------------------------------------------------------------------- %% %% Description: Connect to an ssl server. %%-------------------------------------------------------------------- -spec connect(TCPSocket, TLSOptions) -> {ok, sslsocket()} | {error, reason()} | {option_not_a_key_value_tuple, any()} when TCPSocket :: socket(), TLSOptions :: [tls_client_option()]. connect(Socket, SslOptions) when is_port(Socket) -> connect(Socket, SslOptions, infinity). -spec connect(TCPSocket, TLSOptions, Timeout) -> {ok, sslsocket()} | {error, reason()} when TCPSocket :: socket(), TLSOptions :: [tls_client_option()], Timeout :: timeout(); (Host, Port, TLSOptions) -> {ok, sslsocket()} | {ok, sslsocket(),Ext :: protocol_extensions()} | {error, reason()} | {option_not_a_key_value_tuple, any()} when Host :: host(), Port :: inet:port_number(), TLSOptions :: [tls_client_option()]. connect(Socket, SslOptions0, Timeout) when is_port(Socket), (is_integer(Timeout) andalso Timeout >= 0) or (Timeout == infinity) -> CbInfo = handle_option(cb_info, SslOptions0, default_cb_info(tls)), Transport = element(1, CbInfo), EmulatedOptions = tls_socket:emulated_options(), {ok, SocketValues} = tls_socket:getopts(Transport, Socket, EmulatedOptions), try handle_options(SslOptions0 ++ SocketValues, client) of {ok, Config} -> tls_socket:upgrade(Socket, Config, Timeout) catch _:{error, Reason} -> {error, Reason} end; connect(Host, Port, Options) -> connect(Host, Port, Options, infinity). -spec connect(Host, Port, TLSOptions, Timeout) -> {ok, sslsocket()} | {ok, sslsocket(),Ext :: protocol_extensions()} | {error, reason()} | {option_not_a_key_value_tuple, any()} when Host :: host(), Port :: inet:port_number(), TLSOptions :: [tls_client_option()], Timeout :: timeout(). connect(Host, Port, Options, Timeout) when (is_integer(Timeout) andalso Timeout >= 0) or (Timeout == infinity) -> try {ok, Config} = handle_options(Options, client, Host), case Config#config.connection_cb of tls_connection -> tls_socket:connect(Host,Port,Config,Timeout); dtls_connection -> dtls_socket:connect(Host,Port,Config,Timeout) end catch throw:Error -> Error end. %%-------------------------------------------------------------------- -spec listen(Port, Options) -> {ok, ListenSocket} | {error, reason()} when Port::inet:port_number(), Options::[tls_server_option()], ListenSocket :: sslsocket(). %% %% Description: Creates an ssl listen socket. %%-------------------------------------------------------------------- listen(_Port, []) -> {error, nooptions}; listen(Port, Options0) -> try {ok, Config} = handle_options(Options0, server), do_listen(Port, Config, connection_cb(Options0)) catch Error = {error, _} -> Error end. %%-------------------------------------------------------------------- %% %% Description: Performs transport accept on an ssl listen socket %%-------------------------------------------------------------------- -spec transport_accept(ListenSocket) -> {ok, SslSocket} | {error, reason()} when ListenSocket :: sslsocket(), SslSocket :: sslsocket(). transport_accept(ListenSocket) -> transport_accept(ListenSocket, infinity). -spec transport_accept(ListenSocket, Timeout) -> {ok, SslSocket} | {error, reason()} when ListenSocket :: sslsocket(), Timeout :: timeout(), SslSocket :: sslsocket(). transport_accept(#sslsocket{pid = {ListenSocket, #config{connection_cb = ConnectionCb} = Config}}, Timeout) when (is_integer(Timeout) andalso Timeout >= 0) or (Timeout == infinity) -> case ConnectionCb of tls_connection -> tls_socket:accept(ListenSocket, Config, Timeout); dtls_connection -> dtls_socket:accept(ListenSocket, Config, Timeout) end. %%-------------------------------------------------------------------- %% %% Description: Performs accept on an ssl listen socket. e.i. performs %% ssl handshake. %%-------------------------------------------------------------------- -spec ssl_accept(SslSocket) -> ok | {error, Reason} when SslSocket :: sslsocket(), Reason :: closed | timeout | error_alert(). ssl_accept(ListenSocket) -> ssl_accept(ListenSocket, [], infinity). -spec ssl_accept(Socket, TimeoutOrOptions) -> ok | {ok, sslsocket()} | {error, Reason} when Socket :: sslsocket() | socket(), TimeoutOrOptions :: timeout() | [tls_server_option()], Reason :: timeout | closed | {options, any()} | error_alert(). ssl_accept(Socket, Timeout) when (is_integer(Timeout) andalso Timeout >= 0) or (Timeout == infinity) -> ssl_accept(Socket, [], Timeout); ssl_accept(ListenSocket, SslOptions) when is_port(ListenSocket) -> ssl_accept(ListenSocket, SslOptions, infinity); ssl_accept(Socket, Timeout) -> ssl_accept(Socket, [], Timeout). -spec ssl_accept(Socket, Options, Timeout) -> ok | {ok, sslsocket()} | {error, Reason} when Socket :: sslsocket() | socket(), Options :: [tls_server_option()], Timeout :: timeout(), Reason :: timeout | closed | {options, any()} | error_alert(). ssl_accept(Socket, SslOptions, Timeout) when is_port(Socket) -> handshake(Socket, SslOptions, Timeout); ssl_accept(Socket, SslOptions, Timeout) -> case handshake(Socket, SslOptions, Timeout) of {ok, _} -> ok; Error -> Error end. %%-------------------------------------------------------------------- %% %% Description: Performs accept on an ssl listen socket. e.i. performs %% ssl handshake. %%-------------------------------------------------------------------- %% Performs the SSL/TLS/DTLS server-side handshake. -spec handshake(HsSocket) -> {ok, SslSocket} | {ok, SslSocket, Ext} | {error, Reason} when HsSocket :: sslsocket(), SslSocket :: sslsocket(), Ext :: protocol_extensions(), Reason :: closed | timeout | error_alert(). handshake(ListenSocket) -> handshake(ListenSocket, infinity). -spec handshake(HsSocket, Timeout) -> {ok, SslSocket} | {ok, SslSocket, Ext} | {error, Reason} when HsSocket :: sslsocket(), Timeout :: timeout(), SslSocket :: sslsocket(), Ext :: protocol_extensions(), Reason :: closed | timeout | error_alert(); (Socket, Options) -> {ok, SslSocket} | {ok, SslSocket, Ext} | {error, Reason} when Socket :: socket() | sslsocket(), SslSocket :: sslsocket(), Options :: [server_option()], Ext :: protocol_extensions(), Reason :: closed | timeout | error_alert(). handshake(#sslsocket{} = Socket, Timeout) when (is_integer(Timeout) andalso Timeout >= 0) or (Timeout == infinity) -> ssl_connection:handshake(Socket, Timeout); %% If Socket is a ordinary socket(): upgrades a gen_tcp, or equivalent, socket to %% an SSL socket, that is, performs the SSL/TLS server-side handshake and returns %% the SSL socket. %% %% If Socket is an sslsocket(): provides extra SSL/TLS/DTLS options to those %% specified in ssl:listen/2 and then performs the SSL/TLS/DTLS handshake. handshake(ListenSocket, SslOptions) when is_port(ListenSocket) -> handshake(ListenSocket, SslOptions, infinity). -spec handshake(Socket, Options, Timeout) -> {ok, SslSocket} | {ok, SslSocket, Ext} | {error, Reason} when Socket :: socket() | sslsocket(), SslSocket :: sslsocket(), Options :: [server_option()], Timeout :: timeout(), Ext :: protocol_extensions(), Reason :: closed | timeout | {options, any()} | error_alert(). handshake(#sslsocket{} = Socket, [], Timeout) when (is_integer(Timeout) andalso Timeout >= 0) or (Timeout == infinity)-> handshake(Socket, Timeout); handshake(#sslsocket{fd = {_, _, _, Tracker}} = Socket, SslOpts, Timeout) when (is_integer(Timeout) andalso Timeout >= 0) or (Timeout == infinity)-> try {ok, EmOpts, _} = tls_socket:get_all_opts(Tracker), ssl_connection:handshake(Socket, {SslOpts, tls_socket:emulated_socket_options(EmOpts, #socket_options{})}, Timeout) catch Error = {error, _Reason} -> Error end; handshake(#sslsocket{pid = [Pid|_], fd = {_, _, _}} = Socket, SslOpts, Timeout) when (is_integer(Timeout) andalso Timeout >= 0) or (Timeout == infinity)-> try {ok, EmOpts, _} = dtls_packet_demux:get_all_opts(Pid), ssl_connection:handshake(Socket, {SslOpts, tls_socket:emulated_socket_options(EmOpts, #socket_options{})}, Timeout) catch Error = {error, _Reason} -> Error end; handshake(Socket, SslOptions, Timeout) when is_port(Socket), (is_integer(Timeout) andalso Timeout >= 0) or (Timeout == infinity) -> CbInfo = handle_option(cb_info, SslOptions, default_cb_info(tls)), Transport = element(1, CbInfo), EmulatedOptions = tls_socket:emulated_options(), {ok, SocketValues} = tls_socket:getopts(Transport, Socket, EmulatedOptions), ConnetionCb = connection_cb(SslOptions), try handle_options(SslOptions ++ SocketValues, server) of {ok, #config{transport_info = CbInfo, ssl = SslOpts, emulated = EmOpts}} -> ok = tls_socket:setopts(Transport, Socket, tls_socket:internal_inet_values()), {ok, Port} = tls_socket:port(Transport, Socket), ssl_connection:handshake(ConnetionCb, Port, Socket, {SslOpts, tls_socket:emulated_socket_options(EmOpts, #socket_options{}), undefined}, self(), CbInfo, Timeout) catch Error = {error, _Reason} -> Error end. %%-------------------------------------------------------------------- -spec handshake_continue(HsSocket, Options) -> {ok, SslSocket} | {error, Reason} when HsSocket :: sslsocket(), Options :: [tls_client_option() | tls_server_option()], SslSocket :: sslsocket(), Reason :: closed | timeout | error_alert(). %% %% %% Description: Continues the handshke possible with newly supplied options. %%-------------------------------------------------------------------- handshake_continue(Socket, SSLOptions) -> handshake_continue(Socket, SSLOptions, infinity). %%-------------------------------------------------------------------- -spec handshake_continue(HsSocket, Options, Timeout) -> {ok, SslSocket} | {error, Reason} when HsSocket :: sslsocket(), Options :: [tls_client_option() | tls_server_option()], Timeout :: timeout(), SslSocket :: sslsocket(), Reason :: closed | timeout | error_alert(). %% %% %% Description: Continues the handshke possible with newly supplied options. %%-------------------------------------------------------------------- handshake_continue(Socket, SSLOptions, Timeout) -> ssl_connection:handshake_continue(Socket, SSLOptions, Timeout). %%-------------------------------------------------------------------- -spec handshake_cancel(#sslsocket{}) -> any(). %% %% Description: Cancels the handshakes sending a close alert. %%-------------------------------------------------------------------- handshake_cancel(Socket) -> ssl_connection:handshake_cancel(Socket). %%-------------------------------------------------------------------- -spec close(SslSocket) -> ok | {error, Reason} when SslSocket :: sslsocket(), Reason :: any(). %% %% Description: Close an ssl connection %%-------------------------------------------------------------------- close(#sslsocket{pid = [Pid|_]}) when is_pid(Pid) -> ssl_connection:close(Pid, {close, ?DEFAULT_TIMEOUT}); close(#sslsocket{pid = {dtls, #config{dtls_handler = {Pid, _}}}}) -> dtls_packet_demux:close(Pid); close(#sslsocket{pid = {ListenSocket, #config{transport_info={Transport,_,_,_,_}}}}) -> Transport:close(ListenSocket). %%-------------------------------------------------------------------- -spec close(SslSocket, How) -> ok | {ok, port()} | {error,Reason} when SslSocket :: sslsocket(), How :: timeout() | {NewController::pid(), timeout()}, Reason :: any(). %% %% Description: Close an ssl connection %%-------------------------------------------------------------------- close(#sslsocket{pid = [TLSPid|_]}, {Pid, Timeout} = DownGrade) when is_pid(TLSPid), is_pid(Pid), (is_integer(Timeout) andalso Timeout >= 0) or (Timeout == infinity) -> ssl_connection:close(TLSPid, {close, DownGrade}); close(#sslsocket{pid = [TLSPid|_]}, Timeout) when is_pid(TLSPid), (is_integer(Timeout) andalso Timeout >= 0) or (Timeout == infinity) -> ssl_connection:close(TLSPid, {close, Timeout}); close(#sslsocket{pid = {ListenSocket, #config{transport_info={Transport,_,_,_,_}}}}, _) -> Transport:close(ListenSocket). %%-------------------------------------------------------------------- -spec send(SslSocket, Data) -> ok | {error, reason()} when SslSocket :: sslsocket(), Data :: iodata(). %% %% Description: Sends data over the ssl connection %%-------------------------------------------------------------------- send(#sslsocket{pid = [Pid]}, Data) when is_pid(Pid) -> ssl_connection:send(Pid, Data); send(#sslsocket{pid = [_, Pid]}, Data) when is_pid(Pid) -> tls_sender:send_data(Pid, erlang:iolist_to_iovec(Data)); send(#sslsocket{pid = {_, #config{transport_info={_, udp, _, _}}}}, _) -> {error,enotconn}; %% Emulate connection behaviour send(#sslsocket{pid = {dtls,_}}, _) -> {error,enotconn}; %% Emulate connection behaviour send(#sslsocket{pid = {ListenSocket, #config{transport_info = Info}}}, Data) -> Transport = element(1, Info), Transport:send(ListenSocket, Data). %% {error,enotconn} %%-------------------------------------------------------------------- %% %% Description: Receives data when active = false %%-------------------------------------------------------------------- -spec recv(SslSocket, Length) -> {ok, Data} | {error, reason()} when SslSocket :: sslsocket(), Length :: integer(), Data :: binary() | list(). recv(Socket, Length) -> recv(Socket, Length, infinity). -spec recv(SslSocket, Length, Timeout) -> {ok, Data} | {error, reason()} when SslSocket :: sslsocket(), Length :: integer(), Data :: binary() | list(), Timeout :: timeout(). recv(#sslsocket{pid = [Pid|_]}, Length, Timeout) when is_pid(Pid), (is_integer(Timeout) andalso Timeout >= 0) or (Timeout == infinity)-> ssl_connection:recv(Pid, Length, Timeout); recv(#sslsocket{pid = {dtls,_}}, _, _) -> {error,enotconn}; recv(#sslsocket{pid = {Listen, #config{transport_info = Info}}},_,_) when is_port(Listen)-> Transport = element(1, Info), Transport:recv(Listen, 0). %% {error,enotconn} %%-------------------------------------------------------------------- -spec controlling_process(SslSocket, NewOwner) -> ok | {error, Reason} when SslSocket :: sslsocket(), NewOwner :: pid(), Reason :: any(). %% %% Description: Changes process that receives the messages when active = true %% or once. %%-------------------------------------------------------------------- controlling_process(#sslsocket{pid = [Pid|_]}, NewOwner) when is_pid(Pid), is_pid(NewOwner) -> ssl_connection:new_user(Pid, NewOwner); controlling_process(#sslsocket{pid = {dtls, _}}, NewOwner) when is_pid(NewOwner) -> ok; %% Meaningless but let it be allowed to conform with TLS controlling_process(#sslsocket{pid = {Listen, #config{transport_info = {Transport,_,_,_,_}}}}, NewOwner) when is_port(Listen), is_pid(NewOwner) -> %% Meaningless but let it be allowed to conform with normal sockets Transport:controlling_process(Listen, NewOwner). %%-------------------------------------------------------------------- -spec connection_information(SslSocket) -> {ok, Result} | {error, reason()} when SslSocket :: sslsocket(), Result :: [{OptionName, OptionValue}], OptionName :: atom(), OptionValue :: any(). %% %% Description: Return SSL information for the connection %%-------------------------------------------------------------------- connection_information(#sslsocket{pid = [Pid|_]}) when is_pid(Pid) -> case ssl_connection:connection_information(Pid, false) of {ok, Info} -> {ok, [Item || Item = {_Key, Value} <- Info, Value =/= undefined]}; Error -> Error end; connection_information(#sslsocket{pid = {Listen, _}}) when is_port(Listen) -> {error, enotconn}; connection_information(#sslsocket{pid = {dtls,_}}) -> {error,enotconn}. %%-------------------------------------------------------------------- -spec connection_information(SslSocket, Items) -> {ok, Result} | {error, reason()} when SslSocket :: sslsocket(), Items :: [OptionName], Result :: [{OptionName, OptionValue}], OptionName :: atom(), OptionValue :: any(). %% %% Description: Return SSL information for the connection %%-------------------------------------------------------------------- connection_information(#sslsocket{pid = [Pid|_]}, Items) when is_pid(Pid) -> case ssl_connection:connection_information(Pid, include_security_info(Items)) of {ok, Info} -> {ok, [Item || Item = {Key, Value} <- Info, lists:member(Key, Items), Value =/= undefined]}; Error -> Error end. %%-------------------------------------------------------------------- -spec peername(SslSocket) -> {ok, {Address, Port}} | {error, reason()} when SslSocket :: sslsocket(), Address :: inet:ip_address(), Port :: inet:port_number(). %% %% Description: same as inet:peername/1. %%-------------------------------------------------------------------- peername(#sslsocket{pid = [Pid|_], fd = {Transport, Socket,_}}) when is_pid(Pid)-> dtls_socket:peername(Transport, Socket); peername(#sslsocket{pid = [Pid|_], fd = {Transport, Socket,_,_}}) when is_pid(Pid)-> tls_socket:peername(Transport, Socket); peername(#sslsocket{pid = {dtls, #config{dtls_handler = {_Pid,_}}}}) -> dtls_socket:peername(dtls, undefined); peername(#sslsocket{pid = {ListenSocket, #config{transport_info = {Transport,_,_,_,_}}}}) -> tls_socket:peername(Transport, ListenSocket); %% Will return {error, enotconn} peername(#sslsocket{pid = {dtls,_}}) -> {error,enotconn}. %%-------------------------------------------------------------------- -spec peercert(SslSocket) -> {ok, Cert} | {error, reason()} when SslSocket :: sslsocket(), Cert :: binary(). %% %% Description: Returns the peercert. %%-------------------------------------------------------------------- peercert(#sslsocket{pid = [Pid|_]}) when is_pid(Pid) -> case ssl_connection:peer_certificate(Pid) of {ok, undefined} -> {error, no_peercert}; Result -> Result end; peercert(#sslsocket{pid = {dtls, _}}) -> {error, enotconn}; peercert(#sslsocket{pid = {Listen, _}}) when is_port(Listen) -> {error, enotconn}. %%-------------------------------------------------------------------- -spec negotiated_protocol(SslSocket) -> {ok, Protocol} | {error, Reason} when SslSocket :: sslsocket(), Protocol :: binary(), Reason :: protocol_not_negotiated. %% %% Description: Returns the protocol that has been negotiated. If no %% protocol has been negotiated will return {error, protocol_not_negotiated} %%-------------------------------------------------------------------- negotiated_protocol(#sslsocket{pid = [Pid|_]}) when is_pid(Pid) -> ssl_connection:negotiated_protocol(Pid). %%-------------------------------------------------------------------- -spec cipher_suites() -> [old_cipher_suite()] | [string()]. %%-------------------------------------------------------------------- cipher_suites() -> cipher_suites(erlang). %%-------------------------------------------------------------------- -spec cipher_suites(Type) -> [old_cipher_suite() | string()] when Type :: erlang | openssl | all. %% Description: Returns all supported cipher suites. %%-------------------------------------------------------------------- cipher_suites(erlang) -> [ssl_cipher_format:erl_suite_definition(Suite) || Suite <- available_suites(default)]; cipher_suites(openssl) -> [ssl_cipher_format:openssl_suite_name(Suite) || Suite <- available_suites(default)]; cipher_suites(all) -> [ssl_cipher_format:erl_suite_definition(Suite) || Suite <- available_suites(all)]. %%-------------------------------------------------------------------- -spec cipher_suites(Supported, Version) -> ciphers() when Supported :: default | all | anonymous, Version :: protocol_version(). %% Description: Returns all default and all supported cipher suites for a %% TLS/DTLS version %%-------------------------------------------------------------------- cipher_suites(Base, Version) when Version == 'tlsv1.2'; Version == 'tlsv1.1'; Version == tlsv1; Version == sslv3 -> cipher_suites(Base, tls_record:protocol_version(Version)); cipher_suites(Base, Version) when Version == 'dtlsv1.2'; Version == 'dtlsv1'-> cipher_suites(Base, dtls_record:protocol_version(Version)); cipher_suites(Base, Version) -> [ssl_cipher_format:suite_definition(Suite) || Suite <- supported_suites(Base, Version)]. %%-------------------------------------------------------------------- -spec filter_cipher_suites(Suites, Filters) -> Ciphers when Suites :: ciphers(), Filters :: cipher_filters(), Ciphers :: ciphers(). %% Description: Removes cipher suites if any of the filter functions returns false %% for any part of the cipher suite. This function also calls default filter functions %% to make sure the cipher suite are supported by crypto. %%-------------------------------------------------------------------- filter_cipher_suites(Suites, Filters0) -> #{key_exchange_filters := KexF, cipher_filters := CipherF, mac_filters := MacF, prf_filters := PrfF} = ssl_cipher:crypto_support_filters(), Filters = #{key_exchange_filters => add_filter(proplists:get_value(key_exchange, Filters0), KexF), cipher_filters => add_filter(proplists:get_value(cipher, Filters0), CipherF), mac_filters => add_filter(proplists:get_value(mac, Filters0), MacF), prf_filters => add_filter(proplists:get_value(prf, Filters0), PrfF)}, ssl_cipher:filter_suites(Suites, Filters). %%-------------------------------------------------------------------- -spec prepend_cipher_suites(Preferred, Suites) -> ciphers() when Preferred :: ciphers() | cipher_filters(), Suites :: ciphers(). %% Description: Make suites become the most prefered %% suites that is put them at the head of the cipher suite list %% and remove them from if present. may be a %% list of cipher suits or a list of filters in which case the %% filters are use on Suites to extract the the preferred %% cipher list. %% -------------------------------------------------------------------- prepend_cipher_suites([First | _] = Preferred, Suites0) when is_map(First) -> Suites = Preferred ++ (Suites0 -- Preferred), Suites; prepend_cipher_suites(Filters, Suites) -> Preferred = filter_cipher_suites(Suites, Filters), Preferred ++ (Suites -- Preferred). %%-------------------------------------------------------------------- -spec append_cipher_suites(Deferred, Suites) -> ciphers() when Deferred :: ciphers() | cipher_filters(), Suites :: ciphers(). %% Description: Make suites suites become the %% least prefered suites that is put them at the end of the cipher suite list %% and removed them from if present. %% %%-------------------------------------------------------------------- append_cipher_suites([First | _] = Deferred, Suites0) when is_map(First)-> Suites = (Suites0 -- Deferred) ++ Deferred, Suites; append_cipher_suites(Filters, Suites) -> Deferred = filter_cipher_suites(Suites, Filters), (Suites -- Deferred) ++ Deferred. %%-------------------------------------------------------------------- -spec eccs() -> NamedCurves when NamedCurves :: [named_curve()]. %% Description: returns all supported curves across all versions %%-------------------------------------------------------------------- eccs() -> Curves = tls_v1:ecc_curves(all), % only tls_v1 has named curves right now eccs_filter_supported(Curves). %%-------------------------------------------------------------------- -spec eccs(Version) -> NamedCurves when Version :: protocol_version() | protocol_version_tuple(), NamedCurves :: [named_curve()]. %% Description: returns the curves supported for a given version of %% ssl/tls. %%-------------------------------------------------------------------- eccs({3,0}) -> []; eccs({3,_}) -> Curves = tls_v1:ecc_curves(all), eccs_filter_supported(Curves); eccs({254,_} = Version) -> eccs(dtls_v1:corresponding_tls_version(Version)); eccs(Version) when Version == 'tlsv1.2'; Version == 'tlsv1.1'; Version == tlsv1; Version == sslv3 -> eccs(tls_record:protocol_version(Version)); eccs(Version) when Version == 'dtlsv1.2'; Version == 'dtlsv1'-> eccs(dtls_v1:corresponding_tls_version(dtls_record:protocol_version(Version))). eccs_filter_supported(Curves) -> CryptoCurves = crypto:ec_curves(), lists:filter(fun(Curve) -> proplists:get_bool(Curve, CryptoCurves) end, Curves). %%-------------------------------------------------------------------- -spec groups() -> [group()]. %% Description: returns all supported groups (TLS 1.3 and later) %%-------------------------------------------------------------------- groups() -> tls_v1:groups(4). %%-------------------------------------------------------------------- -spec groups(default) -> [group()]. %% Description: returns the default groups (TLS 1.3 and later) %%-------------------------------------------------------------------- groups(default) -> tls_v1:default_groups(4). %%-------------------------------------------------------------------- -spec getopts(SslSocket, OptionNames) -> {ok, [gen_tcp:option()]} | {error, reason()} when SslSocket :: sslsocket(), OptionNames :: [gen_tcp:option_name()]. %% %% Description: Gets options %%-------------------------------------------------------------------- getopts(#sslsocket{pid = [Pid|_]}, OptionTags) when is_pid(Pid), is_list(OptionTags) -> ssl_connection:get_opts(Pid, OptionTags); getopts(#sslsocket{pid = {dtls, #config{transport_info = {Transport,_,_,_,_}}}} = ListenSocket, OptionTags) when is_list(OptionTags) -> try dtls_socket:getopts(Transport, ListenSocket, OptionTags) of {ok, _} = Result -> Result; {error, InetError} -> {error, {options, {socket_options, OptionTags, InetError}}} catch _:Error -> {error, {options, {socket_options, OptionTags, Error}}} end; getopts(#sslsocket{pid = {_, #config{transport_info = {Transport,_,_,_,_}}}} = ListenSocket, OptionTags) when is_list(OptionTags) -> try tls_socket:getopts(Transport, ListenSocket, OptionTags) of {ok, _} = Result -> Result; {error, InetError} -> {error, {options, {socket_options, OptionTags, InetError}}} catch _:Error -> {error, {options, {socket_options, OptionTags, Error}}} end; getopts(#sslsocket{}, OptionTags) -> {error, {options, {socket_options, OptionTags}}}. %%-------------------------------------------------------------------- -spec setopts(SslSocket, Options) -> ok | {error, reason()} when SslSocket :: sslsocket(), Options :: [gen_tcp:option()]. %% %% Description: Sets options %%-------------------------------------------------------------------- setopts(#sslsocket{pid = [Pid, Sender]}, Options0) when is_pid(Pid), is_list(Options0) -> try proplists:expand([{binary, [{mode, binary}]}, {list, [{mode, list}]}], Options0) of Options -> case proplists:get_value(packet, Options, undefined) of undefined -> ssl_connection:set_opts(Pid, Options); PacketOpt -> case tls_sender:setopts(Sender, [{packet, PacketOpt}]) of ok -> ssl_connection:set_opts(Pid, Options); Error -> Error end end catch _:_ -> {error, {options, {not_a_proplist, Options0}}} end; setopts(#sslsocket{pid = [Pid|_]}, Options0) when is_pid(Pid), is_list(Options0) -> try proplists:expand([{binary, [{mode, binary}]}, {list, [{mode, list}]}], Options0) of Options -> ssl_connection:set_opts(Pid, Options) catch _:_ -> {error, {options, {not_a_proplist, Options0}}} end; setopts(#sslsocket{pid = {dtls, #config{transport_info = {Transport,_,_,_,_}}}} = ListenSocket, Options) when is_list(Options) -> try dtls_socket:setopts(Transport, ListenSocket, Options) of ok -> ok; {error, InetError} -> {error, {options, {socket_options, Options, InetError}}} catch _:Error -> {error, {options, {socket_options, Options, Error}}} end; setopts(#sslsocket{pid = {_, #config{transport_info = {Transport,_,_,_,_}}}} = ListenSocket, Options) when is_list(Options) -> try tls_socket:setopts(Transport, ListenSocket, Options) of ok -> ok; {error, InetError} -> {error, {options, {socket_options, Options, InetError}}} catch _:Error -> {error, {options, {socket_options, Options, Error}}} end; setopts(#sslsocket{}, Options) -> {error, {options,{not_a_proplist, Options}}}. %%--------------------------------------------------------------- -spec getstat(SslSocket) -> {ok, OptionValues} | {error, inet:posix()} when SslSocket :: sslsocket(), OptionValues :: [{inet:stat_option(), integer()}]. %% %% Description: Get all statistic options for a socket. %%-------------------------------------------------------------------- getstat(Socket) -> getstat(Socket, inet:stats()). %%--------------------------------------------------------------- -spec getstat(SslSocket, Options) -> {ok, OptionValues} | {error, inet:posix()} when SslSocket :: sslsocket(), Options :: [inet:stat_option()], OptionValues :: [{inet:stat_option(), integer()}]. %% %% Description: Get one or more statistic options for a socket. %%-------------------------------------------------------------------- getstat(#sslsocket{pid = {Listen, #config{transport_info = {Transport, _, _, _, _}}}}, Options) when is_port(Listen), is_list(Options) -> tls_socket:getstat(Transport, Listen, Options); getstat(#sslsocket{pid = [Pid|_], fd = {Transport, Socket, _, _}}, Options) when is_pid(Pid), is_list(Options) -> tls_socket:getstat(Transport, Socket, Options). %%--------------------------------------------------------------- -spec shutdown(SslSocket, How) -> ok | {error, reason()} when SslSocket :: sslsocket(), How :: read | write | read_write. %% %% Description: Same as gen_tcp:shutdown/2 %%-------------------------------------------------------------------- shutdown(#sslsocket{pid = {Listen, #config{transport_info = Info}}}, How) when is_port(Listen) -> Transport = element(1, Info), Transport:shutdown(Listen, How); shutdown(#sslsocket{pid = {dtls,_}},_) -> {error, enotconn}; shutdown(#sslsocket{pid = [Pid|_]}, How) when is_pid(Pid) -> ssl_connection:shutdown(Pid, How). %%-------------------------------------------------------------------- -spec sockname(SslSocket) -> {ok, {Address, Port}} | {error, reason()} when SslSocket :: sslsocket(), Address :: inet:ip_address(), Port :: inet:port_number(). %% %% Description: Same as inet:sockname/1 %%-------------------------------------------------------------------- sockname(#sslsocket{pid = {Listen, #config{transport_info = {Transport,_,_,_,_}}}}) when is_port(Listen) -> tls_socket:sockname(Transport, Listen); sockname(#sslsocket{pid = {dtls, #config{dtls_handler = {Pid, _}}}}) -> dtls_packet_demux:sockname(Pid); sockname(#sslsocket{pid = [Pid|_], fd = {Transport, Socket,_}}) when is_pid(Pid) -> dtls_socket:sockname(Transport, Socket); sockname(#sslsocket{pid = [Pid| _], fd = {Transport, Socket,_,_}}) when is_pid(Pid) -> tls_socket:sockname(Transport, Socket). %%--------------------------------------------------------------- -spec versions() -> [VersionInfo] when VersionInfo :: {ssl_app, string()} | {supported | available, [tls_version()]} | {supported_dtls | available_dtls, [dtls_version()]}. %% %% Description: Returns a list of relevant versions. %%-------------------------------------------------------------------- versions() -> TLSVsns = tls_record:supported_protocol_versions(), DTLSVsns = dtls_record:supported_protocol_versions(), SupportedTLSVsns = [tls_record:protocol_version(Vsn) || Vsn <- TLSVsns], SupportedDTLSVsns = [dtls_record:protocol_version(Vsn) || Vsn <- DTLSVsns], AvailableTLSVsns = ?ALL_AVAILABLE_VERSIONS, AvailableDTLSVsns = ?ALL_AVAILABLE_DATAGRAM_VERSIONS, [{ssl_app, "9.2"}, {supported, SupportedTLSVsns}, {supported_dtls, SupportedDTLSVsns}, {available, AvailableTLSVsns}, {available_dtls, AvailableDTLSVsns}]. %%--------------------------------------------------------------- -spec renegotiate(SslSocket) -> ok | {error, reason()} when SslSocket :: sslsocket(). %% %% Description: Initiates a renegotiation. %%-------------------------------------------------------------------- renegotiate(#sslsocket{pid = [Pid, Sender |_]}) when is_pid(Pid), is_pid(Sender) -> case tls_sender:renegotiate(Sender) of {ok, Write} -> tls_connection:renegotiation(Pid, Write); Error -> Error end; renegotiate(#sslsocket{pid = [Pid |_]}) when is_pid(Pid) -> ssl_connection:renegotiation(Pid); renegotiate(#sslsocket{pid = {dtls,_}}) -> {error, enotconn}; renegotiate(#sslsocket{pid = {Listen,_}}) when is_port(Listen) -> {error, enotconn}. %%-------------------------------------------------------------------- -spec prf(SslSocket, Secret, Label, Seed, WantedLength) -> {ok, binary()} | {error, reason()} when SslSocket :: sslsocket(), Secret :: binary() | 'master_secret', Label::binary(), Seed :: [binary() | prf_random()], WantedLength :: non_neg_integer(). %% %% Description: use a ssl sessions TLS PRF to generate key material %%-------------------------------------------------------------------- prf(#sslsocket{pid = [Pid|_]}, Secret, Label, Seed, WantedLength) when is_pid(Pid) -> ssl_connection:prf(Pid, Secret, Label, Seed, WantedLength); prf(#sslsocket{pid = {dtls,_}}, _,_,_,_) -> {error, enotconn}; prf(#sslsocket{pid = {Listen,_}}, _,_,_,_) when is_port(Listen) -> {error, enotconn}. %%-------------------------------------------------------------------- -spec clear_pem_cache() -> ok. %% %% Description: Clear the PEM cache %%-------------------------------------------------------------------- clear_pem_cache() -> ssl_pem_cache:clear(). %%--------------------------------------------------------------- -spec format_error({error, Reason}) -> string() when Reason :: any(). %% %% Description: Creates error string. %%-------------------------------------------------------------------- format_error({error, Reason}) -> format_error(Reason); format_error(Reason) when is_list(Reason) -> Reason; format_error(closed) -> "TLS connection is closed"; format_error({tls_alert, {_, Description}}) -> Description; format_error({options,{FileType, File, Reason}}) when FileType == cacertfile; FileType == certfile; FileType == keyfile; FileType == dhfile -> Error = file_error_format(Reason), file_desc(FileType) ++ File ++ ": " ++ Error; format_error({options, {socket_options, Option, Error}}) -> lists:flatten(io_lib:format("Invalid transport socket option ~p: ~s", [Option, format_error(Error)])); format_error({options, {socket_options, Option}}) -> lists:flatten(io_lib:format("Invalid socket option: ~p", [Option])); format_error({options, Options}) -> lists:flatten(io_lib:format("Invalid TLS option: ~p", [Options])); format_error(Error) -> case inet:format_error(Error) of "unknown POSIX" ++ _ -> unexpected_format(Error); Other -> Other end. tls_version({3, _} = Version) -> Version; tls_version({254, _} = Version) -> dtls_v1:corresponding_tls_version(Version). %%-------------------------------------------------------------------- -spec suite_to_str(CipherSuite) -> string() when CipherSuite :: erl_cipher_suite(). %% %% Description: Return the string representation of a cipher suite. %%-------------------------------------------------------------------- suite_to_str(Cipher) -> ssl_cipher_format:suite_to_str(Cipher). %%%-------------------------------------------------------------- %%% Internal functions %%%-------------------------------------------------------------------- %% Possible filters out suites not supported by crypto available_suites(default) -> Version = tls_record:highest_protocol_version([]), ssl_cipher:filter_suites(ssl_cipher:suites(Version)); available_suites(all) -> Version = tls_record:highest_protocol_version([]), ssl_cipher:filter_suites(ssl_cipher:all_suites(Version)). supported_suites(default, Version) -> ssl_cipher:suites(Version); supported_suites(all, Version) -> ssl_cipher:all_suites(Version); supported_suites(anonymous, Version) -> ssl_cipher:anonymous_suites(Version). do_listen(Port, #config{transport_info = {Transport, _, _, _,_}} = Config, tls_connection) -> tls_socket:listen(Transport, Port, Config); do_listen(Port, Config, dtls_connection) -> dtls_socket:listen(Port, Config). %% Handle extra ssl options given to ssl_accept -spec handle_options([any()], #ssl_options{}) -> #ssl_options{} ; ([any()], client | server) -> {ok, #config{}}. handle_options(Opts, Role) -> handle_options(Opts, Role, undefined). handle_options(Opts0, #ssl_options{protocol = Protocol, cacerts = CaCerts0, cacertfile = CaCertFile0} = InheritedSslOpts, _) -> RecordCB = record_cb(Protocol), CaCerts = handle_option(cacerts, Opts0, CaCerts0), {Verify, FailIfNoPeerCert, CaCertDefault, VerifyFun, PartialChainHanlder, VerifyClientOnce} = handle_verify_options(Opts0, CaCerts), CaCertFile = case proplists:get_value(cacertfile, Opts0, CaCertFile0) of undefined -> CaCertDefault; CAFile -> CAFile end, NewVerifyOpts = InheritedSslOpts#ssl_options{cacerts = CaCerts, cacertfile = CaCertFile, verify = Verify, verify_fun = VerifyFun, partial_chain = PartialChainHanlder, fail_if_no_peer_cert = FailIfNoPeerCert, verify_client_once = VerifyClientOnce}, SslOpts1 = lists:foldl(fun(Key, PropList) -> proplists:delete(Key, PropList) end, Opts0, [cacerts, cacertfile, verify, verify_fun, partial_chain, fail_if_no_peer_cert, verify_client_once]), case handle_option(versions, SslOpts1, []) of [] -> new_ssl_options(SslOpts1, NewVerifyOpts, RecordCB); Value -> Versions0 = [RecordCB:protocol_version(Vsn) || Vsn <- Value], Versions1 = lists:sort(fun RecordCB:is_higher/2, Versions0), new_ssl_options(proplists:delete(versions, SslOpts1), NewVerifyOpts#ssl_options{versions = Versions1}, record_cb(Protocol)) end; %% Handle all options in listen and connect handle_options(Opts0, Role, Host) -> Opts = proplists:expand([{binary, [{mode, binary}]}, {list, [{mode, list}]}], Opts0), assert_proplist(Opts), RecordCb = record_cb(Opts), CaCerts = handle_option(cacerts, Opts, undefined), {Verify, FailIfNoPeerCert, CaCertDefault, VerifyFun, PartialChainHanlder, VerifyClientOnce} = handle_verify_options(Opts, CaCerts), CertFile = handle_option(certfile, Opts, <<>>), [HighestVersion|_] = Versions = case handle_option(versions, Opts, []) of [] -> RecordCb:supported_protocol_versions(); Vsns -> Versions0 = [RecordCb:protocol_version(Vsn) || Vsn <- Vsns], lists:sort(fun RecordCb:is_higher/2, Versions0) end, Protocol = handle_option(protocol, Opts, tls), case Versions of [{3, 0}] -> reject_alpn_next_prot_options(Opts); _ -> ok end, SSLOptions0 = #ssl_options{ versions = Versions, verify = validate_option(verify, Verify), verify_fun = VerifyFun, partial_chain = PartialChainHanlder, fail_if_no_peer_cert = FailIfNoPeerCert, verify_client_once = VerifyClientOnce, depth = handle_option(depth, Opts, 1), cert = handle_option(cert, Opts, undefined), certfile = CertFile, key = handle_option(key, Opts, undefined), keyfile = handle_option(keyfile, Opts, CertFile), password = handle_option(password, Opts, ""), cacerts = CaCerts, cacertfile = handle_option(cacertfile, Opts, CaCertDefault), dh = handle_option(dh, Opts, undefined), dhfile = handle_option(dhfile, Opts, undefined), user_lookup_fun = handle_option(user_lookup_fun, Opts, undefined), psk_identity = handle_option(psk_identity, Opts, undefined), srp_identity = handle_option(srp_identity, Opts, undefined), ciphers = handle_cipher_option(proplists:get_value(ciphers, Opts, []), HighestVersion), eccs = handle_eccs_option(proplists:get_value(eccs, Opts, eccs()), HighestVersion), supported_groups = handle_supported_groups_option( proplists:get_value(supported_groups, Opts, groups(default)), HighestVersion), signature_algs = handle_hashsigns_option( proplists:get_value( signature_algs, Opts, default_option_role_sign_algs(server, tls_v1:default_signature_algs(HighestVersion), Role, HighestVersion)), tls_version(HighestVersion)), signature_algs_cert = handle_signature_algorithms_option( proplists:get_value( signature_algs_cert, Opts, undefined), %% Do not send by default tls_version(HighestVersion)), reuse_sessions = handle_reuse_sessions_option(reuse_sessions, Opts, Role), reuse_session = handle_reuse_session_option(reuse_session, Opts, Role), secure_renegotiate = handle_option(secure_renegotiate, Opts, true), client_renegotiation = handle_option(client_renegotiation, Opts, default_option_role(server, true, Role), server, Role), renegotiate_at = handle_option(renegotiate_at, Opts, ?DEFAULT_RENEGOTIATE_AT), hibernate_after = handle_option(hibernate_after, Opts, infinity), erl_dist = handle_option(erl_dist, Opts, false), alpn_advertised_protocols = handle_option(alpn_advertised_protocols, Opts, undefined), alpn_preferred_protocols = handle_option(alpn_preferred_protocols, Opts, undefined), next_protocols_advertised = handle_option(next_protocols_advertised, Opts, undefined), next_protocol_selector = make_next_protocol_selector( handle_option(client_preferred_next_protocols, Opts, undefined)), server_name_indication = handle_option(server_name_indication, Opts, default_option_role(client, server_name_indication_default(Host), Role)), sni_hosts = handle_option(sni_hosts, Opts, []), sni_fun = handle_option(sni_fun, Opts, undefined), honor_cipher_order = handle_option(honor_cipher_order, Opts, default_option_role(server, false, Role), server, Role), honor_ecc_order = handle_option(honor_ecc_order, Opts, default_option_role(server, false, Role), server, Role), protocol = Protocol, padding_check = proplists:get_value(padding_check, Opts, true), beast_mitigation = handle_option(beast_mitigation, Opts, one_n_minus_one), fallback = handle_option(fallback, Opts, proplists:get_value(fallback, Opts, default_option_role(client, false, Role)), client, Role), crl_check = handle_option(crl_check, Opts, false), crl_cache = handle_option(crl_cache, Opts, {ssl_crl_cache, {internal, []}}), max_handshake_size = handle_option(max_handshake_size, Opts, ?DEFAULT_MAX_HANDSHAKE_SIZE), handshake = handle_option(handshake, Opts, full), customize_hostname_check = handle_option(customize_hostname_check, Opts, []) }, LogLevel = handle_option(log_alert, Opts, true), SSLOptions = SSLOptions0#ssl_options{ log_level = handle_option(log_level, Opts, LogLevel) }, CbInfo = handle_option(cb_info, Opts, default_cb_info(Protocol)), SslOptions = [protocol, versions, verify, verify_fun, partial_chain, fail_if_no_peer_cert, verify_client_once, depth, cert, certfile, key, keyfile, password, cacerts, cacertfile, dh, dhfile, user_lookup_fun, psk_identity, srp_identity, ciphers, reuse_session, reuse_sessions, ssl_imp, client_renegotiation, cb_info, renegotiate_at, secure_renegotiate, hibernate_after, erl_dist, alpn_advertised_protocols, sni_hosts, sni_fun, alpn_preferred_protocols, next_protocols_advertised, client_preferred_next_protocols, log_alert, log_level, server_name_indication, honor_cipher_order, padding_check, crl_check, crl_cache, fallback, signature_algs, signature_algs_cert, eccs, honor_ecc_order, beast_mitigation, max_handshake_size, handshake, customize_hostname_check, supported_groups], SockOpts = lists:foldl(fun(Key, PropList) -> proplists:delete(Key, PropList) end, Opts, SslOptions), {Sock, Emulated} = emulated_options(Protocol, SockOpts), ConnetionCb = connection_cb(Opts), {ok, #config{ssl = SSLOptions, emulated = Emulated, inet_ssl = Sock, inet_user = Sock, transport_info = CbInfo, connection_cb = ConnetionCb }}. handle_option(OptionName, Opts, Default, Role, Role) -> handle_option(OptionName, Opts, Default); handle_option(_, _, undefined = Value, _, _) -> Value. handle_option(sni_fun, Opts, Default) -> OptFun = validate_option(sni_fun, proplists:get_value(sni_fun, Opts, Default)), OptHosts = proplists:get_value(sni_hosts, Opts, undefined), case {OptFun, OptHosts} of {Default, _} -> Default; {_, undefined} -> OptFun; _ -> throw({error, {conflict_options, [sni_fun, sni_hosts]}}) end; handle_option(cb_info, Opts, Default) -> CbInfo = proplists:get_value(cb_info, Opts, Default), true = validate_option(cb_info, CbInfo), handle_cb_info(CbInfo, Default); handle_option(OptionName, Opts, Default) -> validate_option(OptionName, proplists:get_value(OptionName, Opts, Default)). validate_option(versions, Versions) -> validate_versions(Versions, Versions); validate_option(verify, Value) when Value == verify_none; Value == verify_peer -> Value; validate_option(verify_fun, undefined) -> undefined; %% Backwards compatibility validate_option(verify_fun, Fun) when is_function(Fun) -> {fun(_,{bad_cert, _} = Reason, OldFun) -> case OldFun([Reason]) of true -> {valid, OldFun}; false -> {fail, Reason} end; (_,{extension, _}, UserState) -> {unknown, UserState}; (_, valid, UserState) -> {valid, UserState}; (_, valid_peer, UserState) -> {valid, UserState} end, Fun}; validate_option(verify_fun, {Fun, _} = Value) when is_function(Fun) -> Value; validate_option(partial_chain, Value) when is_function(Value) -> Value; validate_option(fail_if_no_peer_cert, Value) when is_boolean(Value) -> Value; validate_option(verify_client_once, Value) when is_boolean(Value) -> Value; validate_option(depth, Value) when is_integer(Value), Value >= 0, Value =< 255-> Value; validate_option(cert, Value) when Value == undefined; is_binary(Value) -> Value; validate_option(certfile, undefined = Value) -> Value; validate_option(certfile, Value) when is_binary(Value) -> Value; validate_option(certfile, Value) when is_list(Value) -> binary_filename(Value); validate_option(key, undefined) -> undefined; validate_option(key, {KeyType, Value}) when is_binary(Value), KeyType == rsa; %% Backwards compatibility KeyType == dsa; %% Backwards compatibility KeyType == 'RSAPrivateKey'; KeyType == 'DSAPrivateKey'; KeyType == 'ECPrivateKey'; KeyType == 'PrivateKeyInfo' -> {KeyType, Value}; validate_option(key, #{algorithm := _} = Value) -> Value; validate_option(keyfile, undefined) -> <<>>; validate_option(keyfile, Value) when is_binary(Value) -> Value; validate_option(keyfile, Value) when is_list(Value), Value =/= "" -> binary_filename(Value); validate_option(password, Value) when is_list(Value) -> Value; validate_option(cacerts, Value) when Value == undefined; is_list(Value) -> Value; %% certfile must be present in some cases otherwhise it can be set %% to the empty string. validate_option(cacertfile, undefined) -> <<>>; validate_option(cacertfile, Value) when is_binary(Value) -> Value; validate_option(cacertfile, Value) when is_list(Value), Value =/= ""-> binary_filename(Value); validate_option(dh, Value) when Value == undefined; is_binary(Value) -> Value; validate_option(dhfile, undefined = Value) -> Value; validate_option(dhfile, Value) when is_binary(Value) -> Value; validate_option(dhfile, Value) when is_list(Value), Value =/= "" -> binary_filename(Value); validate_option(psk_identity, undefined) -> undefined; validate_option(psk_identity, Identity) when is_list(Identity), Identity =/= "", length(Identity) =< 65535 -> binary_filename(Identity); validate_option(user_lookup_fun, undefined) -> undefined; validate_option(user_lookup_fun, {Fun, _} = Value) when is_function(Fun, 3) -> Value; validate_option(srp_identity, undefined) -> undefined; validate_option(srp_identity, {Username, Password}) when is_list(Username), is_list(Password), Username =/= "", length(Username) =< 255 -> {unicode:characters_to_binary(Username), unicode:characters_to_binary(Password)}; validate_option(reuse_session, undefined) -> undefined; validate_option(reuse_session, Value) when is_function(Value) -> Value; validate_option(reuse_session, Value) when is_binary(Value) -> Value; validate_option(reuse_sessions, Value) when is_boolean(Value) -> Value; validate_option(reuse_sessions, save = Value) -> Value; validate_option(secure_renegotiate, Value) when is_boolean(Value) -> Value; validate_option(client_renegotiation, Value) when is_boolean(Value) -> Value; validate_option(renegotiate_at, Value) when is_integer(Value) -> erlang:min(Value, ?DEFAULT_RENEGOTIATE_AT); validate_option(hibernate_after, undefined) -> %% Backwards compatibility infinity; validate_option(hibernate_after, infinity) -> infinity; validate_option(hibernate_after, Value) when is_integer(Value), Value >= 0 -> Value; validate_option(erl_dist,Value) when is_boolean(Value) -> Value; validate_option(Opt, Value) when Opt =:= alpn_advertised_protocols orelse Opt =:= alpn_preferred_protocols, is_list(Value) -> validate_binary_list(Opt, Value), Value; validate_option(Opt, Value) when Opt =:= alpn_advertised_protocols orelse Opt =:= alpn_preferred_protocols, Value =:= undefined -> undefined; validate_option(client_preferred_next_protocols, {Precedence, PreferredProtocols}) when is_list(PreferredProtocols) -> validate_binary_list(client_preferred_next_protocols, PreferredProtocols), validate_npn_ordering(Precedence), {Precedence, PreferredProtocols, ?NO_PROTOCOL}; validate_option(client_preferred_next_protocols, {Precedence, PreferredProtocols, Default} = Value) when is_list(PreferredProtocols), is_binary(Default), byte_size(Default) > 0, byte_size(Default) < 256 -> validate_binary_list(client_preferred_next_protocols, PreferredProtocols), validate_npn_ordering(Precedence), Value; validate_option(client_preferred_next_protocols, undefined) -> undefined; validate_option(log_alert, true) -> notice; validate_option(log_alert, false) -> warning; validate_option(log_level, Value) when is_atom(Value) andalso (Value =:= emergency orelse Value =:= alert orelse Value =:= critical orelse Value =:= error orelse Value =:= warning orelse Value =:= notice orelse Value =:= info orelse Value =:= debug) -> Value; validate_option(next_protocols_advertised, Value) when is_list(Value) -> validate_binary_list(next_protocols_advertised, Value), Value; validate_option(next_protocols_advertised, undefined) -> undefined; validate_option(server_name_indication, Value) when is_list(Value) -> %% RFC 6066, Section 3: Currently, the only server names supported are %% DNS hostnames %% case inet_parse:domain(Value) of %% false -> %% throw({error, {options, {{Opt, Value}}}}); %% true -> %% Value %% end; %% %% But the definition seems very diffuse, so let all strings through %% and leave it up to public_key to decide... Value; validate_option(server_name_indication, undefined) -> undefined; validate_option(server_name_indication, disable) -> disable; validate_option(sni_hosts, []) -> []; validate_option(sni_hosts, [{Hostname, SSLOptions} | Tail]) when is_list(Hostname) -> RecursiveSNIOptions = proplists:get_value(sni_hosts, SSLOptions, undefined), case RecursiveSNIOptions of undefined -> [{Hostname, validate_options(SSLOptions)} | validate_option(sni_hosts, Tail)]; _ -> throw({error, {options, {sni_hosts, RecursiveSNIOptions}}}) end; validate_option(sni_fun, undefined) -> undefined; validate_option(sni_fun, Fun) when is_function(Fun) -> Fun; validate_option(honor_cipher_order, Value) when is_boolean(Value) -> Value; validate_option(honor_ecc_order, Value) when is_boolean(Value) -> Value; validate_option(padding_check, Value) when is_boolean(Value) -> Value; validate_option(fallback, Value) when is_boolean(Value) -> Value; validate_option(crl_check, Value) when is_boolean(Value) -> Value; validate_option(crl_check, Value) when (Value == best_effort) or (Value == peer) -> Value; validate_option(crl_cache, {Cb, {_Handle, Options}} = Value) when is_atom(Cb) and is_list(Options) -> Value; validate_option(beast_mitigation, Value) when Value == one_n_minus_one orelse Value == zero_n orelse Value == disabled -> Value; validate_option(max_handshake_size, Value) when is_integer(Value) andalso Value =< ?MAX_UNIT24 -> Value; validate_option(protocol, Value = tls) -> Value; validate_option(protocol, Value = dtls) -> Value; validate_option(handshake, hello = Value) -> Value; validate_option(handshake, full = Value) -> Value; validate_option(customize_hostname_check, Value) when is_list(Value) -> Value; validate_option(cb_info, {V1, V2, V3, V4}) when is_atom(V1), is_atom(V2), is_atom(V3), is_atom(V4) -> true; validate_option(cb_info, {V1, V2, V3, V4, V5}) when is_atom(V1), is_atom(V2), is_atom(V3), is_atom(V4), is_atom(V5) -> true; validate_option(cb_info, _) -> false; validate_option(Opt, Value) -> throw({error, {options, {Opt, Value}}}). handle_cb_info({V1, V2, V3, V4}, {_,_,_,_,_}) -> {V1,V2,V3,V4, list_to_atom(atom_to_list(V2) ++ "passive")}; handle_cb_info(CbInfo, _) -> CbInfo. handle_hashsigns_option(Value, Version) when is_list(Value) andalso Version >= {3, 4} -> case tls_v1:signature_schemes(Version, Value) of [] -> throw({error, {options, no_supported_signature_schemes, {signature_algs, Value}}}); _ -> Value end; handle_hashsigns_option(Value, Version) when is_list(Value) andalso Version =:= {3, 3} -> case tls_v1:signature_algs(Version, Value) of [] -> throw({error, {options, no_supported_algorithms, {signature_algs, Value}}}); _ -> Value end; handle_hashsigns_option(_, Version) when Version =:= {3, 3} -> handle_hashsigns_option(tls_v1:default_signature_algs(Version), Version); handle_hashsigns_option(_, _Version) -> undefined. handle_signature_algorithms_option(Value, Version) when is_list(Value) andalso Version >= {3, 4} -> case tls_v1:signature_schemes(Version, Value) of [] -> throw({error, {options, no_supported_signature_schemes, {signature_algs_cert, Value}}}); _ -> Value end; handle_signature_algorithms_option(_, _Version) -> undefined. handle_reuse_sessions_option(Key, Opts, client) -> Value = proplists:get_value(Key, Opts, true), validate_option(Key, Value), Value; handle_reuse_sessions_option(Key, Opts0, server) -> Opts = proplists:delete({Key, save}, Opts0), Value = proplists:get_value(Key, Opts, true), validate_option(Key, Value), Value. handle_reuse_session_option(Key, Opts, client) -> Value = proplists:get_value(Key, Opts, undefined), validate_option(Key, Value), Value; handle_reuse_session_option(Key, Opts, server) -> ReuseSessionFun = fun(_, _, _, _) -> true end, Value = proplists:get_value(Key, Opts, ReuseSessionFun), validate_option(Key, Value), Value. validate_options([]) -> []; validate_options([{Opt, Value} | Tail]) -> [{Opt, validate_option(Opt, Value)} | validate_options(Tail)]. validate_npn_ordering(client) -> ok; validate_npn_ordering(server) -> ok; validate_npn_ordering(Value) -> throw({error, {options, {client_preferred_next_protocols, {invalid_precedence, Value}}}}). validate_binary_list(Opt, List) -> lists:foreach( fun(Bin) when is_binary(Bin), byte_size(Bin) > 0, byte_size(Bin) < 256 -> ok; (Bin) -> throw({error, {options, {Opt, {invalid_protocol, Bin}}}}) end, List). validate_versions([], Versions) -> Versions; validate_versions([Version | Rest], Versions) when Version == 'tlsv1.3'; Version == 'tlsv1.2'; Version == 'tlsv1.1'; Version == tlsv1; Version == sslv3 -> tls_validate_versions(Rest, Versions); validate_versions([Version | Rest], Versions) when Version == 'dtlsv1'; Version == 'dtlsv1.2'-> dtls_validate_versions(Rest, Versions); validate_versions([Ver| _], Versions) -> throw({error, {options, {Ver, {versions, Versions}}}}). tls_validate_versions([], Versions) -> Versions; tls_validate_versions([Version | Rest], Versions) when Version == 'tlsv1.3'; Version == 'tlsv1.2'; Version == 'tlsv1.1'; Version == tlsv1; Version == sslv3 -> tls_validate_versions(Rest, Versions); tls_validate_versions([Ver| _], Versions) -> throw({error, {options, {Ver, {versions, Versions}}}}). dtls_validate_versions([], Versions) -> Versions; dtls_validate_versions([Version | Rest], Versions) when Version == 'dtlsv1'; Version == 'dtlsv1.2'-> dtls_validate_versions(Rest, Versions); dtls_validate_versions([Ver| _], Versions) -> throw({error, {options, {Ver, {versions, Versions}}}}). %% The option cacerts overrides cacertsfile ca_cert_default(_,_, [_|_]) -> undefined; ca_cert_default(verify_none, _, _) -> undefined; ca_cert_default(verify_peer, {Fun,_}, _) when is_function(Fun) -> undefined; %% Server that wants to verify_peer and has no verify_fun must have %% some trusted certs. ca_cert_default(verify_peer, undefined, _) -> "". emulated_options(Protocol, Opts) -> case Protocol of tls -> tls_socket:emulated_options(Opts); dtls -> dtls_socket:emulated_options(Opts) end. handle_cipher_option(Value, Version) when is_list(Value) -> try binary_cipher_suites(Version, Value) of Suites -> Suites catch exit:_ -> throw({error, {options, {ciphers, Value}}}); error:_-> throw({error, {options, {ciphers, Value}}}) end. binary_cipher_suites(Version, []) -> %% Defaults to all supported suites that does %% not require explicit configuration default_binary_suites(Version); binary_cipher_suites(Version, [Map|_] = Ciphers0) when is_map(Map) -> Ciphers = [ssl_cipher_format:suite(C) || C <- Ciphers0], binary_cipher_suites(Version, Ciphers); binary_cipher_suites(Version, [Tuple|_] = Ciphers0) when is_tuple(Tuple) -> Ciphers = [ssl_cipher_format:suite(tuple_to_map(C)) || C <- Ciphers0], binary_cipher_suites(Version, Ciphers); binary_cipher_suites(Version, [Cipher0 | _] = Ciphers0) when is_binary(Cipher0) -> All = ssl_cipher:all_suites(Version) ++ ssl_cipher:anonymous_suites(Version), case [Cipher || Cipher <- Ciphers0, lists:member(Cipher, All)] of [] -> %% Defaults to all supported suites that does %% not require explicit configuration default_binary_suites(Version); Ciphers -> Ciphers end; binary_cipher_suites(Version, [Head | _] = Ciphers0) when is_list(Head) -> %% Format: ["RC4-SHA","RC4-MD5"] Ciphers = [ssl_cipher_format:openssl_suite(C) || C <- Ciphers0], binary_cipher_suites(Version, Ciphers); binary_cipher_suites(Version, Ciphers0) -> %% Format: "RC4-SHA:RC4-MD5" Ciphers = [ssl_cipher_format:openssl_suite(C) || C <- string:lexemes(Ciphers0, ":")], binary_cipher_suites(Version, Ciphers). default_binary_suites(Version) -> ssl_cipher:filter_suites(ssl_cipher:suites(Version)). tuple_to_map({Kex, Cipher, Mac}) -> #{key_exchange => Kex, cipher => Cipher, mac => Mac, prf => default_prf}; tuple_to_map({Kex, Cipher, Mac, Prf}) -> #{key_exchange => Kex, cipher => Cipher, mac => tuple_to_map_mac(Cipher, Mac), prf => Prf}. %% Backwards compatible tuple_to_map_mac(aes_128_gcm, _) -> aead; tuple_to_map_mac(aes_256_gcm, _) -> aead; tuple_to_map_mac(chacha20_poly1305, _) -> aead; tuple_to_map_mac(_, MAC) -> MAC. handle_eccs_option(Value, Version) when is_list(Value) -> {_Major, Minor} = tls_version(Version), try tls_v1:ecc_curves(Minor, Value) of Curves -> #elliptic_curves{elliptic_curve_list = Curves} catch exit:_ -> throw({error, {options, {eccs, Value}}}); error:_ -> throw({error, {options, {eccs, Value}}}) end. handle_supported_groups_option(Value, Version) when is_list(Value) -> {_Major, Minor} = tls_version(Version), try tls_v1:groups(Minor, Value) of Groups -> #supported_groups{supported_groups = Groups} catch exit:_ -> throw({error, {options, {supported_groups, Value}}}); error:_ -> throw({error, {options, {supported_groups, Value}}}) end. unexpected_format(Error) -> lists:flatten(io_lib:format("Unexpected error: ~p", [Error])). file_error_format({error, Error})-> case file:format_error(Error) of "unknown POSIX error" -> "decoding error"; Str -> Str end; file_error_format(_) -> "decoding error". file_desc(cacertfile) -> "Invalid CA certificate file "; file_desc(certfile) -> "Invalid certificate file "; file_desc(keyfile) -> "Invalid key file "; file_desc(dhfile) -> "Invalid DH params file ". detect(_Pred, []) -> undefined; detect(Pred, [H|T]) -> case Pred(H) of true -> H; _ -> detect(Pred, T) end. make_next_protocol_selector(undefined) -> undefined; make_next_protocol_selector({client, AllProtocols, DefaultProtocol}) -> fun(AdvertisedProtocols) -> case detect(fun(PreferredProtocol) -> lists:member(PreferredProtocol, AdvertisedProtocols) end, AllProtocols) of undefined -> DefaultProtocol; PreferredProtocol -> PreferredProtocol end end; make_next_protocol_selector({server, AllProtocols, DefaultProtocol}) -> fun(AdvertisedProtocols) -> case detect(fun(PreferredProtocol) -> lists:member(PreferredProtocol, AllProtocols) end, AdvertisedProtocols) of undefined -> DefaultProtocol; PreferredProtocol -> PreferredProtocol end end. connection_cb(tls) -> tls_connection; connection_cb(dtls) -> dtls_connection; connection_cb(Opts) -> connection_cb(proplists:get_value(protocol, Opts, tls)). record_cb(tls) -> tls_record; record_cb(dtls) -> dtls_record; record_cb(Opts) -> record_cb(proplists:get_value(protocol, Opts, tls)). binary_filename(FileName) -> Enc = file:native_name_encoding(), unicode:characters_to_binary(FileName, unicode, Enc). assert_proplist([]) -> true; assert_proplist([{Key,_} | Rest]) when is_atom(Key) -> assert_proplist(Rest); %% Handle exceptions assert_proplist([{raw,_,_,_} | Rest]) -> assert_proplist(Rest); assert_proplist([inet | Rest]) -> assert_proplist(Rest); assert_proplist([inet6 | Rest]) -> assert_proplist(Rest); assert_proplist([Value | _]) -> throw({option_not_a_key_value_tuple, Value}). new_ssl_options([], #ssl_options{} = Opts, _) -> Opts; new_ssl_options([{verify_client_once, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{verify_client_once = validate_option(verify_client_once, Value)}, RecordCB); new_ssl_options([{depth, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{depth = validate_option(depth, Value)}, RecordCB); new_ssl_options([{cert, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{cert = validate_option(cert, Value)}, RecordCB); new_ssl_options([{certfile, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{certfile = validate_option(certfile, Value)}, RecordCB); new_ssl_options([{key, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{key = validate_option(key, Value)}, RecordCB); new_ssl_options([{keyfile, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{keyfile = validate_option(keyfile, Value)}, RecordCB); new_ssl_options([{password, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{password = validate_option(password, Value)}, RecordCB); new_ssl_options([{dh, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{dh = validate_option(dh, Value)}, RecordCB); new_ssl_options([{dhfile, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{dhfile = validate_option(dhfile, Value)}, RecordCB); new_ssl_options([{user_lookup_fun, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{user_lookup_fun = validate_option(user_lookup_fun, Value)}, RecordCB); new_ssl_options([{psk_identity, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{psk_identity = validate_option(psk_identity, Value)}, RecordCB); new_ssl_options([{srp_identity, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{srp_identity = validate_option(srp_identity, Value)}, RecordCB); new_ssl_options([{ciphers, Value} | Rest], #ssl_options{versions = Versions} = Opts, RecordCB) -> Ciphers = handle_cipher_option(Value, RecordCB:highest_protocol_version(Versions)), new_ssl_options(Rest, Opts#ssl_options{ciphers = Ciphers}, RecordCB); new_ssl_options([{reuse_session, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{reuse_session = validate_option(reuse_session, Value)}, RecordCB); new_ssl_options([{reuse_sessions, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{reuse_sessions = validate_option(reuse_sessions, Value)}, RecordCB); new_ssl_options([{ssl_imp, _Value} | Rest], #ssl_options{} = Opts, RecordCB) -> %% Not used backwards compatibility new_ssl_options(Rest, Opts, RecordCB); new_ssl_options([{renegotiate_at, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{ renegotiate_at = validate_option(renegotiate_at, Value)}, RecordCB); new_ssl_options([{secure_renegotiate, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{secure_renegotiate = validate_option(secure_renegotiate, Value)}, RecordCB); new_ssl_options([{client_renegotiation, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{client_renegotiation = validate_option(client_renegotiation, Value)}, RecordCB); new_ssl_options([{hibernate_after, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{hibernate_after = validate_option(hibernate_after, Value)}, RecordCB); new_ssl_options([{alpn_advertised_protocols, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{alpn_advertised_protocols = validate_option(alpn_advertised_protocols, Value)}, RecordCB); new_ssl_options([{alpn_preferred_protocols, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{alpn_preferred_protocols = validate_option(alpn_preferred_protocols, Value)}, RecordCB); new_ssl_options([{next_protocols_advertised, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{next_protocols_advertised = validate_option(next_protocols_advertised, Value)}, RecordCB); new_ssl_options([{client_preferred_next_protocols, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{next_protocol_selector = make_next_protocol_selector(validate_option(client_preferred_next_protocols, Value))}, RecordCB); new_ssl_options([{log_alert, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{log_level = validate_option(log_alert, Value)}, RecordCB); new_ssl_options([{log_level, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{log_level = validate_option(log_level, Value)}, RecordCB); new_ssl_options([{server_name_indication, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{server_name_indication = validate_option(server_name_indication, Value)}, RecordCB); new_ssl_options([{honor_cipher_order, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{honor_cipher_order = validate_option(honor_cipher_order, Value)}, RecordCB); new_ssl_options([{honor_ecc_order, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{honor_ecc_order = validate_option(honor_ecc_order, Value)}, RecordCB); new_ssl_options([{eccs, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{eccs = handle_eccs_option(Value, RecordCB:highest_protocol_version()) }, RecordCB); new_ssl_options([{supported_groups, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{supported_groups = handle_supported_groups_option(Value, RecordCB:highest_protocol_version()) }, RecordCB); new_ssl_options([{signature_algs, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{signature_algs = handle_hashsigns_option(Value, tls_version(RecordCB:highest_protocol_version()))}, RecordCB); new_ssl_options([{signature_algs_cert, Value} | Rest], #ssl_options{} = Opts, RecordCB) -> new_ssl_options( Rest, Opts#ssl_options{signature_algs_cert = handle_signature_algorithms_option( Value, tls_version(RecordCB:highest_protocol_version()))}, RecordCB); new_ssl_options([{protocol, dtls = Value} | Rest], #ssl_options{} = Opts, dtls_record = RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{protocol = Value}, RecordCB); new_ssl_options([{protocol, tls = Value} | Rest], #ssl_options{} = Opts, tls_record = RecordCB) -> new_ssl_options(Rest, Opts#ssl_options{protocol = Value}, RecordCB); new_ssl_options([{Key, Value} | _Rest], #ssl_options{}, _) -> throw({error, {options, {Key, Value}}}). handle_verify_options(Opts, CaCerts) -> DefaultVerifyNoneFun = {fun(_,{bad_cert, _}, UserState) -> {valid, UserState}; (_,{extension, #'Extension'{critical = true}}, UserState) -> %% This extension is marked as critical, so %% certificate verification should fail if we don't %% understand the extension. However, this is %% `verify_none', so let's accept it anyway. {valid, UserState}; (_,{extension, _}, UserState) -> {unknown, UserState}; (_, valid, UserState) -> {valid, UserState}; (_, valid_peer, UserState) -> {valid, UserState} end, []}, VerifyNoneFun = handle_option(verify_fun, Opts, DefaultVerifyNoneFun), UserFailIfNoPeerCert = handle_option(fail_if_no_peer_cert, Opts, false), UserVerifyFun = handle_option(verify_fun, Opts, undefined), PartialChainHanlder = handle_option(partial_chain, Opts, fun(_) -> unknown_ca end), VerifyClientOnce = handle_option(verify_client_once, Opts, false), %% Handle 0, 1, 2 for backwards compatibility case proplists:get_value(verify, Opts, verify_none) of 0 -> {verify_none, false, ca_cert_default(verify_none, VerifyNoneFun, CaCerts), VerifyNoneFun, PartialChainHanlder, VerifyClientOnce}; 1 -> {verify_peer, false, ca_cert_default(verify_peer, UserVerifyFun, CaCerts), UserVerifyFun, PartialChainHanlder, VerifyClientOnce}; 2 -> {verify_peer, true, ca_cert_default(verify_peer, UserVerifyFun, CaCerts), UserVerifyFun, PartialChainHanlder, VerifyClientOnce}; verify_none -> {verify_none, false, ca_cert_default(verify_none, VerifyNoneFun, CaCerts), VerifyNoneFun, PartialChainHanlder, VerifyClientOnce}; verify_peer -> {verify_peer, UserFailIfNoPeerCert, ca_cert_default(verify_peer, UserVerifyFun, CaCerts), UserVerifyFun, PartialChainHanlder, VerifyClientOnce}; Value -> throw({error, {options, {verify, Value}}}) end. %% Added to handle default values for signature_algs in TLS 1.3 default_option_role_sign_algs(_, Value, _, Version) when Version >= {3,4} -> Value; default_option_role_sign_algs(Role, Value, Role, _) -> Value; default_option_role_sign_algs(_, _, _, _) -> undefined. default_option_role(Role, Value, Role) -> Value; default_option_role(_,_,_) -> undefined. default_cb_info(tls) -> {gen_tcp, tcp, tcp_closed, tcp_error, tcp_passive}; default_cb_info(dtls) -> {gen_udp, udp, udp_closed, udp_error, udp_passive}. include_security_info([]) -> false; include_security_info([Item | Items]) -> case lists:member(Item, [client_random, server_random, master_secret]) of true -> true; false -> include_security_info(Items) end. server_name_indication_default(Host) when is_list(Host) -> Host; server_name_indication_default(_) -> undefined. reject_alpn_next_prot_options(Opts) -> AlpnNextOpts = [alpn_advertised_protocols, alpn_preferred_protocols, next_protocols_advertised, next_protocol_selector, client_preferred_next_protocols], reject_alpn_next_prot_options(AlpnNextOpts, Opts). reject_alpn_next_prot_options([], _) -> ok; reject_alpn_next_prot_options([Opt| AlpnNextOpts], Opts) -> case lists:keyfind(Opt, 1, Opts) of {Opt, Value} -> throw({error, {options, {not_supported_in_sslv3, {Opt, Value}}}}); false -> reject_alpn_next_prot_options(AlpnNextOpts, Opts) end. add_filter(undefined, Filters) -> Filters; add_filter(Filter, Filters) -> [Filter | Filters].