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authorIngela Anderton Andin <[email protected]>2013-11-15 17:11:48 +0100
committerIngela Anderton Andin <[email protected]>2013-12-02 09:50:27 +0100
commitc9a45539359d71aa0c68c9ca45b8015dd0e1b9cd (patch)
tree69072918302b6733c2070a2bcddd0c4973736b18 /lib/ssl/src/ssl.erl
parent95db85ba3581b9b8722239fb1accc8a4a2d6c2e5 (diff)
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ssl: Refactor API
New design : ssl - Main tls - Reflect tls specific semantics dtls - Reflect dtls specific semantics
Diffstat (limited to 'lib/ssl/src/ssl.erl')
-rw-r--r--lib/ssl/src/ssl.erl1017
1 files changed, 909 insertions, 108 deletions
diff --git a/lib/ssl/src/ssl.erl b/lib/ssl/src/ssl.erl
index dc6898d001..067c31d9e8 100644
--- a/lib/ssl/src/ssl.erl
+++ b/lib/ssl/src/ssl.erl
@@ -19,63 +19,38 @@
%%
-%%% Purpose : Backwards compatibility
+%%% Purpose : Main API module for SSL see also tls.erl and dtls.erl
-module(ssl).
-
--export([start/0, start/1, stop/0, transport_accept/1,
- transport_accept/2, ssl_accept/1, ssl_accept/2, ssl_accept/3,
- cipher_suites/0, cipher_suites/1, suite_definition/1,
- close/1, shutdown/2,
- connect/3, connect/2, connect/4, connection_info/1,
- controlling_process/2, listen/2, peername/1, peercert/1,
- recv/2, recv/3, send/2, getopts/2, setopts/2, sockname/1,
- versions/0, session_info/1, format_error/1,
- renegotiate/1, prf/5, clear_pem_cache/0, random_bytes/1, negotiated_next_protocol/1]).
-
+-include("ssl_internal.hrl").
+-include_lib("public_key/include/public_key.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,
+ ssl_accept/1, ssl_accept/2, ssl_accept/3,
+ controlling_process/2, peername/1, peercert/1, sockname/1,
+ close/1, shutdown/2, recv/2, recv/3, send/2, getopts/2, setopts/2
+ ]).
+%% SSL/TLS protocol handling
+-export([cipher_suites/0, cipher_suites/1, suite_definition/1,
+ connection_info/1, versions/0, session_info/1, format_error/1,
+ renegotiate/1, prf/5, negotiated_next_protocol/1]).
+%% Misc
+-export([random_bytes/1]).
+
+-include("ssl_api.hrl").
-include("ssl_internal.hrl").
-include("ssl_record.hrl").
-include("ssl_cipher.hrl").
-include("ssl_handshake.hrl").
+-include("ssl_srp.hrl").
-include_lib("public_key/include/public_key.hrl").
-%% Visible in API
--export_type([connect_option/0, listen_option/0, ssl_option/0, transport_option/0,
- erl_cipher_suite/0, %% From ssl_cipher.hrl
- tls_atom_version/0, %% From ssl_internal.hrl
- prf_random/0, sslsocket/0]).
-
--type sslsocket() :: #sslsocket{}.
--type connect_option() :: socket_connect_option() | ssl_option() | transport_option().
--type socket_connect_option() :: gen_tcp:connect_option().
--type listen_option() :: socket_listen_option() | ssl_option() | transport_option().
--type socket_listen_option() :: gen_tcp:listen_option().
-
--type ssl_option() :: {verify, verify_type()} |
- {verify_fun, {fun(), InitialUserState::term()}} |
- {fail_if_no_peer_cert, boolean()} | {depth, integer()} |
- {cert, Der::binary()} | {certfile, path()} | {key, Der::binary()} |
- {keyfile, path()} | {password, string()} | {cacerts, [Der::binary()]} |
- {cacertfile, path()} | {dh, Der::binary()} | {dhfile, path()} |
- {user_lookup_fun, {fun(), InitialUserState::term()}} |
- {psk_identity, string()} |
- {srp_identity, {string(), string()}} |
- {ciphers, ciphers()} | {ssl_imp, ssl_imp()} | {reuse_sessions, boolean()} |
- {reuse_session, fun()} | {hibernate_after, integer()|undefined} |
- {next_protocols_advertised, list(binary())} |
- {client_preferred_next_protocols, binary(), client | server, list(binary())}.
-
--type verify_type() :: verify_none | verify_peer.
--type path() :: string().
--type ciphers() :: [erl_cipher_suite()] |
- string(). % (according to old API)
--type ssl_imp() :: new | old.
-
--type transport_option() :: {cb_info, {CallbackModule::atom(), DataTag::atom(),
- ClosedTag::atom(), ErrTag::atom()}}.
--type prf_random() :: client_random | server_random.
-
%%--------------------------------------------------------------------
-spec start() -> ok | {error, reason()}.
-spec start(permanent | transient | temporary) -> ok | {error, reason()}.
@@ -85,65 +60,245 @@
%% is temporary. see application(3)
%%--------------------------------------------------------------------
start() ->
- tls:start().
+ application:start(crypto),
+ application:start(asn1),
+ application:start(public_key),
+ application:start(ssl).
+
start(Type) ->
- tls:start(Type).
+ application:start(crypto, Type),
+ application:start(asn1),
+ application:start(public_key, Type),
+ application:start(ssl, Type).
+%%--------------------------------------------------------------------
+-spec stop() -> ok.
+%%
+%% Description: Stops the ssl application.
+%%--------------------------------------------------------------------
stop() ->
- tls:stop().
+ application:stop(ssl).
-connect(Socket, SslOptions) ->
- tls:connect(Socket, SslOptions).
+%%--------------------------------------------------------------------
+-spec connect(host() | port(), [connect_option()]) -> {ok, #sslsocket{}} |
+ {error, reason()}.
+-spec connect(host() | port(), [connect_option()] | inet:port_number(),
+ timeout() | list()) ->
+ {ok, #sslsocket{}} | {error, reason()}.
+-spec connect(host() | port(), inet:port_number(), list(), timeout()) ->
+ {ok, #sslsocket{}} | {error, reason()}.
-connect(Socket, SslOptions0, TimeoutOrOpts) ->
- tls:connect(Socket, SslOptions0, TimeoutOrOpts).
+%%
+%% Description: Connect to an ssl server.
+%%--------------------------------------------------------------------
+connect(Socket, SslOptions) when is_port(Socket) ->
+ connect(Socket, SslOptions, infinity).
+
+connect(Socket, SslOptions0, Timeout) when is_port(Socket) ->
+ {Transport,_,_,_} = proplists:get_value(cb_info, SslOptions0,
+ {gen_tcp, tcp, tcp_closed, tcp_error}),
+ EmulatedOptions = emulated_options(),
+ {ok, SocketValues} = ssl_socket:getopts(Transport, Socket, EmulatedOptions),
+ try handle_options(SslOptions0 ++ SocketValues, client) of
+ {ok, #config{transport_info = CbInfo, ssl = SslOptions, emulated = EmOpts,
+ connection_cb = ConnectionCb}} ->
+
+ ok = ssl_socket:setopts(Transport, Socket, internal_inet_values()),
+ case ssl_socket:peername(Transport, Socket) of
+ {ok, {Address, Port}} ->
+ ConnectionCb:connect(Address, Port, Socket,
+ {SslOptions, EmOpts},
+ self(), CbInfo, Timeout);
+ {error, Error} ->
+ {error, Error}
+ end
+ catch
+ _:{error, Reason} ->
+ {error, Reason}
+ end;
+
+connect(Host, Port, Options) ->
+ connect(Host, Port, Options, infinity).
connect(Host, Port, Options, Timeout) ->
- tls:connect(Host, Port, Options, Timeout).
+ try handle_options(Options, client) of
+ {ok, Config} ->
+ do_connect(Host,Port,Config,Timeout)
+ catch
+ throw:Error ->
+ Error
+ end.
-listen(Port, Options) ->
- tls:listen(Port, Options).
+%%--------------------------------------------------------------------
+-spec listen(inet:port_number(), [listen_option()]) ->{ok, #sslsocket{}} | {error, reason()}.
+%%
+%% Description: Creates an ssl listen socket.
+%%--------------------------------------------------------------------
+listen(_Port, []) ->
+ {error, nooptions};
+listen(Port, Options0) ->
+ try
+ {ok, Config} = handle_options(Options0, server),
+ #config{transport_info = {Transport, _, _, _}, inet_user = Options} = Config,
+ case Transport:listen(Port, Options) of
+ {ok, ListenSocket} ->
+ {ok, #sslsocket{pid = {ListenSocket, Config}}};
+ Err = {error, _} ->
+ Err
+ end
+ catch
+ Error = {error, _} ->
+ Error
+ end.
+%%--------------------------------------------------------------------
+-spec transport_accept(#sslsocket{}) -> {ok, #sslsocket{}} |
+ {error, reason()}.
+-spec transport_accept(#sslsocket{}, timeout()) -> {ok, #sslsocket{}} |
+ {error, reason()}.
+%%
+%% Description: Performs transport accept on an ssl listen socket
+%%--------------------------------------------------------------------
transport_accept(ListenSocket) ->
- tls:transport_accept(ListenSocket).
+ transport_accept(ListenSocket, infinity).
+
+transport_accept(#sslsocket{pid = {ListenSocket,
+ #config{transport_info = CbInfo, ssl = SslOpts}}}, Timeout) ->
+ %% The setopt could have been invoked on the listen socket
+ %% and options should be inherited.
+ EmOptions = emulated_options(),
+ {Transport,_,_, _} = CbInfo,
+ {ok, SocketValues} = ssl_socket:getopts(Transport, ListenSocket, EmOptions),
+ ok = ssl_socket:setopts(Transport, ListenSocket, internal_inet_values()),
+ case Transport:accept(ListenSocket, Timeout) of
+ {ok, Socket} ->
+ ok = ssl_socket:setopts(Transport, ListenSocket, SocketValues),
+ {ok, Port} = ssl_socket:port(Transport, Socket),
+ ConnArgs = [server, "localhost", Port, Socket,
+ {SslOpts, socket_options(SocketValues)}, self(), CbInfo],
+ case ssl_connection_sup:start_child(ConnArgs) of
+ {ok, Pid} ->
+ tls_connection:socket_control(Socket, Pid, Transport);
+ {error, Reason} ->
+ {error, Reason}
+ end;
+ {error, Reason} ->
+ {error, Reason}
+ end.
-transport_accept(ListenSocket, Timeout) ->
- tls:transport_accept(ListenSocket, Timeout).
-
+%%--------------------------------------------------------------------
+-spec ssl_accept(#sslsocket{}) -> ok | {error, reason()}.
+-spec ssl_accept(#sslsocket{} | port(), timeout()| [ssl_option()
+ | transport_option()]) ->
+ ok | {ok, #sslsocket{}} | {error, reason()}.
+-spec ssl_accept(port(), [ssl_option()| transport_option()], timeout()) ->
+ {ok, #sslsocket{}} | {error, reason()}.
+%%
+%% Description: Performs accept on an ssl listen socket. e.i. performs
+%% ssl handshake.
+%%--------------------------------------------------------------------
ssl_accept(ListenSocket) ->
- tls:ssl_accept(ListenSocket, infinity).
+ ssl_accept(ListenSocket, infinity).
-ssl_accept(#sslsocket{} = Socket, Timeout) ->
- tls:ssl_accept(Socket, Timeout);
+ssl_accept(#sslsocket{fd = {_,_, ConnetionCb}} = Socket, Timeout) ->
+ ConnetionCb:handshake(Socket, Timeout);
ssl_accept(ListenSocket, SslOptions) when is_port(ListenSocket) ->
- tls:ssl_accept(ListenSocket, SslOptions, infinity).
+ ssl_accept(ListenSocket, SslOptions, infinity).
ssl_accept(Socket, SslOptions, Timeout) when is_port(Socket) ->
- tls:ssl_accept(Socket, SslOptions, Timeout).
+ {Transport,_,_,_} =
+ proplists:get_value(cb_info, SslOptions, {gen_tcp, tcp, tcp_closed, tcp_error}),
+ EmulatedOptions = emulated_options(),
+ {ok, SocketValues} = ssl_socket:getopts(Transport, Socket, EmulatedOptions),
+ try handle_options(SslOptions ++ SocketValues, server) of
+ {ok, #config{transport_info = CbInfo, ssl = SslOpts, emulated = EmOpts}} ->
+ ok = ssl_socket:setopts(Transport, Socket, internal_inet_values()),
+ {ok, Port} = ssl_socket:port(Transport, Socket),
+ tls_connection:ssl_accept(Port, Socket,
+ {SslOpts, EmOpts},
+ self(), CbInfo, Timeout)
+ catch
+ Error = {error, _Reason} -> Error
+ end.
-close(Socket) ->
- tls:close(Socket).
+%%--------------------------------------------------------------------
+-spec close(#sslsocket{}) -> term().
+%%
+%% Description: Close an ssl connection
+%%--------------------------------------------------------------------
+close(#sslsocket{pid = Pid, fd = {_,_, ConnetionCb}}) when is_pid(Pid) ->
+ ConnetionCb:close(Pid);
+close(#sslsocket{pid = {ListenSocket, #config{transport_info={Transport,_, _, _}}}}) ->
+ Transport:close(ListenSocket).
-send(Socket, Data) ->
- tls:send(Socket, Data).
+%%--------------------------------------------------------------------
+-spec send(#sslsocket{}, iodata()) -> ok | {error, reason()}.
+%%
+%% Description: Sends data over the ssl connection
+%%--------------------------------------------------------------------
+send(#sslsocket{pid = Pid, fd = {_,_, ConnetionCb}}, Data) when is_pid(Pid) ->
+ ConnetionCb:send(Pid, Data);
+send(#sslsocket{pid = {ListenSocket, #config{transport_info={Transport, _, _, _}}}}, Data) ->
+ Transport:send(ListenSocket, Data). %% {error,enotconn}
+%%--------------------------------------------------------------------
+-spec recv(#sslsocket{}, integer()) -> {ok, binary()| list()} | {error, reason()}.
+-spec recv(#sslsocket{}, integer(), timeout()) -> {ok, binary()| list()} | {error, reason()}.
+%%
+%% Description: Receives data when active = false
+%%--------------------------------------------------------------------
recv(Socket, Length) ->
- tls:recv(Socket, Length, infinity).
-recv(Socket, Length, Timeout) ->
- tls:recv(Socket, Length, Timeout).
+ recv(Socket, Length, infinity).
+recv(#sslsocket{pid = Pid, fd = {_,_, ConnetionCb}}, Length, Timeout) when is_pid(Pid) ->
+ ConnetionCb:recv(Pid, Length, Timeout);
+recv(#sslsocket{pid = {Listen,
+ #config{transport_info = {Transport, _, _, _}}}}, _,_) when is_port(Listen)->
+ Transport:recv(Listen, 0). %% {error,enotconn}
-controlling_process(Socket, NewOwner) ->
- tls:controlling_process(Socket, NewOwner).
-
-connection_info(Socket) ->
- tls:connection_info(Socket).
+%%--------------------------------------------------------------------
+-spec controlling_process(#sslsocket{}, pid()) -> ok | {error, reason()}.
+%%
+%% Description: Changes process that receives the messages when active = true
+%% or once.
+%%--------------------------------------------------------------------
+controlling_process(#sslsocket{pid = Pid,
+ fd = {_,_, ConnetionCb}}, NewOwner) when is_pid(Pid), is_pid(NewOwner) ->
+ ConnetionCb:new_user(Pid, NewOwner);
+controlling_process(#sslsocket{pid = {Listen,
+ #config{transport_info = {Transport, _, _, _}}}},
+ NewOwner) when is_port(Listen),
+ is_pid(NewOwner) ->
+ Transport:controlling_process(Listen, NewOwner).
-peername(Socket) ->
- tls:peername(Socket).
+%%--------------------------------------------------------------------
+-spec connection_info(#sslsocket{}) -> {ok, {tls_atom_version(), erl_cipher_suite()}} |
+ {error, reason()}.
+%%
+%% Description: Returns ssl protocol and cipher used for the connection
+%%--------------------------------------------------------------------
+connection_info(#sslsocket{pid = Pid, fd = {_,_, ConnetionCb}}) when is_pid(Pid) ->
+ ConnetionCb:info(Pid);
+connection_info(#sslsocket{pid = {Listen, _}}) when is_port(Listen) ->
+ {error, enotconn}.
-peercert(#sslsocket{pid = Pid}) when is_pid(Pid) ->
- case tls_connection:peer_certificate(Pid) of
+%%--------------------------------------------------------------------
+-spec peername(#sslsocket{}) -> {ok, {inet:ip_address(), inet:port_number()}} | {error, reason()}.
+%%
+%% Description: same as inet:peername/1.
+%%--------------------------------------------------------------------
+peername(#sslsocket{pid = Pid, fd = {Transport, Socket, _}}) when is_pid(Pid)->
+ ssl_socket:peername(Transport, Socket);
+peername(#sslsocket{pid = {ListenSocket, #config{transport_info = {Transport,_,_,_}}}}) ->
+ ssl_socket:peername(Transport, ListenSocket). %% Will return {error, enotconn}
+
+%%--------------------------------------------------------------------
+-spec peercert(#sslsocket{}) ->{ok, DerCert::binary()} | {error, reason()}.
+%%
+%% Description: Returns the peercert.
+%%--------------------------------------------------------------------
+peercert(#sslsocket{pid = Pid, fd = {_,_, ConnetionCb}}) when is_pid(Pid) ->
+ case ConnetionCb:peer_certificate(Pid) of
{ok, undefined} ->
{error, no_peercert};
Result ->
@@ -152,20 +307,30 @@ peercert(#sslsocket{pid = Pid}) when is_pid(Pid) ->
peercert(#sslsocket{pid = {Listen, _}}) when is_port(Listen) ->
{error, enotconn}.
+%%--------------------------------------------------------------------
+-spec suite_definition(cipher_suite()) -> erl_cipher_suite().
+%%
+%% Description: Return erlang cipher suite definition.
+%%--------------------------------------------------------------------
suite_definition(S) ->
{KeyExchange, Cipher, Hash, _} = ssl_cipher:suite_definition(S),
{KeyExchange, Cipher, Hash}.
-negotiated_next_protocol(#sslsocket{pid = Pid}) ->
- tls_connection:negotiated_next_protocol(Pid).
+%%--------------------------------------------------------------------
+-spec negotiated_next_protocol(#sslsocket{}) -> {ok, binary()} | {error, reason()}.
+%%
+%% Description: Returns the next protocol that has been negotiated. If no
+%% protocol has been negotiated will return {error, next_protocol_not_negotiated}
+%%--------------------------------------------------------------------
+negotiated_next_protocol(#sslsocket{pid = Pid, fd = {_,_, ConnetionCb}}) ->
+ ConnetionCb:negotiated_next_protocol(Pid).
-%%%--------------------------------------------------------------------
+%%--------------------------------------------------------------------
-spec cipher_suites() -> [erl_cipher_suite()].
--spec cipher_suites(erlang | openssl | all ) -> [erl_cipher_suite()] | [string()].
+-spec cipher_suites(erlang | openssl | all) -> [erl_cipher_suite()] | [string()].
%% Description: Returns all supported cipher suites.
%%--------------------------------------------------------------------
-
cipher_suites() ->
cipher_suites(erlang).
@@ -176,7 +341,6 @@ cipher_suites(erlang) ->
cipher_suites(openssl) ->
Version = tls_record:highest_protocol_version([]),
[ssl_cipher:openssl_suite_name(S) || S <- ssl_cipher:suites(Version)];
-
cipher_suites(all) ->
Version = tls_record:highest_protocol_version([]),
Supported = ssl_cipher:suites(Version)
@@ -185,37 +349,674 @@ cipher_suites(all) ->
++ ssl_cipher:srp_suites(),
[suite_definition(S) || S <- Supported].
-getopts(Socket, OptionTags) ->
- tls:getopts(Socket, OptionTags).
+%%--------------------------------------------------------------------
+-spec getopts(#sslsocket{}, [gen_tcp:option_name()]) ->
+ {ok, [gen_tcp:option()]} | {error, reason()}.
+%%
+%% Description: Gets options
+%%--------------------------------------------------------------------
+getopts(#sslsocket{pid = Pid, fd = {_,_, ConnetionCb}}, OptionTags) when is_pid(Pid), is_list(OptionTags) ->
+ ConnetionCb:get_opts(Pid, OptionTags);
+getopts(#sslsocket{pid = {ListenSocket, #config{transport_info = {Transport,_,_,_}}}},
+ OptionTags) when is_list(OptionTags) ->
+ try ssl_socket:getopts(Transport, ListenSocket, OptionTags) of
+ {ok, _} = Result ->
+ Result;
+ {error, InetError} ->
+ {error, {options, {socket_options, OptionTags, InetError}}}
+ catch
+ _:_ ->
+ {error, {options, {socket_options, OptionTags}}}
+ end;
+getopts(#sslsocket{}, OptionTags) ->
+ {error, {options, {socket_options, OptionTags}}}.
-setopts(Socket, Options) ->
- tls:setopts(Socket, Options).
+%%--------------------------------------------------------------------
+-spec setopts(#sslsocket{}, [gen_tcp:option()]) -> ok | {error, reason()}.
+%%
+%% Description: Sets options
+%%--------------------------------------------------------------------
+setopts(#sslsocket{pid = Pid, fd = {_,_, ConnetionCb}}, Options0) when is_pid(Pid), is_list(Options0) ->
+ try proplists:expand([{binary, [{mode, binary}]},
+ {list, [{mode, list}]}], Options0) of
+ Options ->
+ ConnetionCb:set_opts(Pid, Options)
+ catch
+ _:_ ->
+ {error, {options, {not_a_proplist, Options0}}}
+ end;
-shutdown(Socket, How) ->
- tls:shutdown(Socket, How).
+setopts(#sslsocket{pid = {ListenSocket, #config{transport_info = {Transport,_,_,_}}}}, Options) when is_list(Options) ->
+ try ssl_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}}}.
-sockname(Socket) ->
- tls:sockname(Socket).
+%%---------------------------------------------------------------
+-spec shutdown(#sslsocket{}, read | write | read_write) -> ok | {error, reason()}.
+%%
+%% Description: Same as gen_tcp:shutdown/2
+%%--------------------------------------------------------------------
+shutdown(#sslsocket{pid = {Listen, #config{transport_info = {Transport,_, _, _}}}},
+ How) when is_port(Listen) ->
+ Transport:shutdown(Listen, How);
+shutdown(#sslsocket{pid = Pid, fd = {_,_, ConnetionCb}}, How) ->
+ ConnetionCb:shutdown(Pid, How).
-session_info(#sslsocket{pid = Pid}) when is_pid(Pid) ->
- tls_connection:session_info(Pid);
+%%--------------------------------------------------------------------
+-spec sockname(#sslsocket{}) -> {ok, {inet:ip_address(), inet:port_number()}} | {error, reason()}.
+%%
+%% Description: Same as inet:sockname/1
+%%--------------------------------------------------------------------
+sockname(#sslsocket{pid = {Listen, #config{transport_info = {Transport,_, _, _}}}}) when is_port(Listen) ->
+ ssl_socket:sockname(Transport, Listen);
+
+sockname(#sslsocket{pid = Pid, fd = {Transport, Socket, _}}) when is_pid(Pid) ->
+ ssl_socket:sockname(Transport, Socket).
+
+%%---------------------------------------------------------------
+-spec session_info(#sslsocket{}) -> {ok, list()} | {error, reason()}.
+%%
+%% Description: Returns list of session info currently [{session_id, session_id(),
+%% {cipher_suite, cipher_suite()}]
+%%--------------------------------------------------------------------
+session_info(#sslsocket{pid = Pid, fd = {_,_, ConnetionCb}}) when is_pid(Pid) ->
+ ConnetionCb:session_info(Pid);
session_info(#sslsocket{pid = {Listen,_}}) when is_port(Listen) ->
{error, enotconn}.
+%%---------------------------------------------------------------
+-spec versions() -> [{ssl_app, string()} | {supported, [tls_atom_version()]} |
+ {available, [tls_atom_version()]}].
+%%
+%% Description: Returns a list of relevant versions.
+%%--------------------------------------------------------------------
versions() ->
- tls:versions().
+ Vsns = tls_record:supported_protocol_versions(),
+ SupportedVsns = [tls_record:protocol_version(Vsn) || Vsn <- Vsns],
+ AvailableVsns = ?ALL_SUPPORTED_VERSIONS,
+ %% TODO Add DTLS versions when supported
+ [{ssl_app, ?VSN}, {supported, SupportedVsns}, {available, AvailableVsns}].
+
-renegotiate(Socket) ->
- tls:renegotiate(Socket).
+%%---------------------------------------------------------------
+-spec renegotiate(#sslsocket{}) -> ok | {error, reason()}.
+%%
+%% Description: Initiates a renegotiation.
+%%--------------------------------------------------------------------
+renegotiate(#sslsocket{pid = Pid, fd = {_,_, ConnetionCb}}) when is_pid(Pid) ->
+ ConnetionCb:renegotiation(Pid);
+renegotiate(#sslsocket{pid = {Listen,_}}) when is_port(Listen) ->
+ {error, enotconn}.
-prf(Socket, Secret, Label, Seed, WantedLength) ->
- tls:prf(Socket, Secret, Label, Seed, WantedLength).
+%%--------------------------------------------------------------------
+-spec prf(#sslsocket{}, binary() | 'master_secret', binary(),
+ binary() | prf_random(), non_neg_integer()) ->
+ {ok, binary()} | {error, reason()}.
+%%
+%% Description: use a ssl sessions TLS PRF to generate key material
+%%--------------------------------------------------------------------
+prf(#sslsocket{pid = Pid, fd = {_,_,ConnetionCb}},
+ Secret, Label, Seed, WantedLength) when is_pid(Pid) ->
+ ConnetionCb:prf(Pid, Secret, Label, Seed, WantedLength);
+prf(#sslsocket{pid = {Listen,_}}, _,_,_,_) when is_port(Listen) ->
+ {error, enotconn}.
+%%--------------------------------------------------------------------
+-spec clear_pem_cache() -> ok.
+%%
+%% Description: Clear the PEM cache
+%%--------------------------------------------------------------------
clear_pem_cache() ->
- tls:clear_pem_cache().
+ ssl_manager:clear_pem_cache().
+
+%%---------------------------------------------------------------
+-spec format_error({error, term()}) -> list().
+%%
+%% 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}) ->
+ "TLS Alert: " ++ 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.
-format_error(Error) ->
- tls:format_error(Error).
+%%--------------------------------------------------------------------
+-spec random_bytes(integer()) -> binary().
+%%
+%% Description: Generates cryptographically secure random sequence if possible
+%% fallbacks on pseudo random function
+%%--------------------------------------------------------------------
random_bytes(N) ->
- tls:random_bytes(N).
+ try crypto:strong_rand_bytes(N) of
+ RandBytes ->
+ RandBytes
+ catch
+ error:low_entropy ->
+ crypto:rand_bytes(N)
+ end.
+
+%%%--------------------------------------------------------------
+%%% Internal functions
+%%%--------------------------------------------------------------------
+do_connect(Address, Port,
+ #config{transport_info = CbInfo, inet_user = UserOpts, ssl = SslOpts,
+ emulated = EmOpts, inet_ssl = SocketOpts, connection_cb = ConnetionCb},
+ Timeout) ->
+ {Transport, _, _, _} = CbInfo,
+ try Transport:connect(Address, Port, SocketOpts, Timeout) of
+ {ok, Socket} ->
+ ConnetionCb:connect(Address, Port, Socket, {SslOpts,EmOpts},
+ self(), CbInfo, Timeout);
+ {error, Reason} ->
+ {error, Reason}
+ catch
+ exit:{function_clause, _} ->
+ {error, {options, {cb_info, CbInfo}}};
+ exit:badarg ->
+ {error, {options, {socket_options, UserOpts}}};
+ exit:{badarg, _} ->
+ {error, {options, {socket_options, UserOpts}}}
+ end.
+
+handle_options(Opts0, _Role) ->
+ Opts = proplists:expand([{binary, [{mode, binary}]},
+ {list, [{mode, list}]}], Opts0),
+ ReuseSessionFun = fun(_, _, _, _) -> true end,
+
+ DefaultVerifyNoneFun =
+ {fun(_,{bad_cert, _}, UserState) ->
+ {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),
+ CaCerts = handle_option(cacerts, Opts, undefined),
+
+ {Verify, FailIfNoPeerCert, CaCertDefault, VerifyFun} =
+ %% 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};
+ 1 ->
+ {verify_peer, false,
+ ca_cert_default(verify_peer, UserVerifyFun, CaCerts), UserVerifyFun};
+ 2 ->
+ {verify_peer, true,
+ ca_cert_default(verify_peer, UserVerifyFun, CaCerts), UserVerifyFun};
+ verify_none ->
+ {verify_none, false,
+ ca_cert_default(verify_none, VerifyNoneFun, CaCerts), VerifyNoneFun};
+ verify_peer ->
+ {verify_peer, UserFailIfNoPeerCert,
+ ca_cert_default(verify_peer, UserVerifyFun, CaCerts), UserVerifyFun};
+ Value ->
+ throw({error, {options, {verify, Value}}})
+ end,
+
+ CertFile = handle_option(certfile, Opts, <<>>),
+
+ Versions = case handle_option(versions, Opts, []) of
+ [] ->
+ tls_record:supported_protocol_versions();
+ Vsns ->
+ [tls_record:protocol_version(Vsn) || Vsn <- Vsns]
+ end,
+
+ SSLOptions = #ssl_options{
+ versions = Versions,
+ verify = validate_option(verify, Verify),
+ verify_fun = VerifyFun,
+ fail_if_no_peer_cert = FailIfNoPeerCert,
+ verify_client_once = handle_option(verify_client_once, Opts, false),
+ 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_option(ciphers, Opts, []),
+ %% Server side option
+ reuse_session = handle_option(reuse_session, Opts, ReuseSessionFun),
+ reuse_sessions = handle_option(reuse_sessions, Opts, true),
+ secure_renegotiate = handle_option(secure_renegotiate, Opts, false),
+ renegotiate_at = handle_option(renegotiate_at, Opts, ?DEFAULT_RENEGOTIATE_AT),
+ hibernate_after = handle_option(hibernate_after, Opts, undefined),
+ erl_dist = handle_option(erl_dist, Opts, false),
+ 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)),
+ log_alert = handle_option(log_alert, Opts, true)
+ },
+
+ CbInfo = proplists:get_value(cb_info, Opts, {gen_tcp, tcp, tcp_closed, tcp_error}),
+ SslOptions = [protocol, versions, verify, verify_fun,
+ 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,
+ cb_info, renegotiate_at, secure_renegotiate, hibernate_after,
+ erl_dist, next_protocols_advertised,
+ client_preferred_next_protocols, log_alert],
+
+ SockOpts = lists:foldl(fun(Key, PropList) ->
+ proplists:delete(Key, PropList)
+ end, Opts, SslOptions),
+
+ {SSLsock, Emulated} = emulated_options(SockOpts),
+
+ ConnetionCb = case proplists:get_value(protocol, Opts, tls) of
+ tls ->
+ tls_connection;
+ dtls ->
+ dtls_connection
+ end,
+ {ok, #config{ssl = SSLOptions, emulated = Emulated, inet_ssl = SSLsock,
+ inet_user = SockOpts, transport_info = CbInfo, connection_cb = ConnetionCb
+ }}.
+
+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(fail_if_no_peer_cert, Value)
+ when Value == true; Value == false ->
+ Value;
+validate_option(verify_client_once, Value)
+ when Value == true; Value == false ->
+ 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) ->
+ list_to_binary(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 == 'PrivateKeyInfo' ->
+ {KeyType, Value};
+
+validate_option(keyfile, undefined) ->
+ <<>>;
+validate_option(keyfile, Value) when is_binary(Value) ->
+ Value;
+validate_option(keyfile, Value) when is_list(Value), Value =/= "" ->
+ list_to_binary(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 =/= ""->
+ list_to_binary(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 =/= "" ->
+ list_to_binary(Value);
+validate_option(psk_identity, undefined) ->
+ undefined;
+validate_option(psk_identity, Identity)
+ when is_list(Identity), Identity =/= "", length(Identity) =< 65535 ->
+ list_to_binary(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 ->
+ {list_to_binary(Username), list_to_binary(Password)};
+
+validate_option(ciphers, Value) when is_list(Value) ->
+ Version = tls_record:highest_protocol_version([]),
+ try cipher_suites(Version, Value)
+ catch
+ exit:_ ->
+ throw({error, {options, {ciphers, Value}}});
+ error:_->
+ throw({error, {options, {ciphers, Value}}})
+ end;
+validate_option(reuse_session, Value) when is_function(Value) ->
+ Value;
+validate_option(reuse_sessions, Value) when Value == true;
+ Value == false ->
+ Value;
+
+validate_option(secure_renegotiate, Value) when Value == true;
+ Value == false ->
+ Value;
+validate_option(renegotiate_at, Value) when is_integer(Value) ->
+ erlang:min(Value, ?DEFAULT_RENEGOTIATE_AT);
+
+validate_option(hibernate_after, undefined) ->
+ undefined;
+validate_option(hibernate_after, Value) when is_integer(Value), Value >= 0 ->
+ Value;
+validate_option(erl_dist,Value) when Value == true;
+ Value == false ->
+ Value;
+validate_option(client_preferred_next_protocols = Opt, {Precedence, PreferredProtocols} = Value)
+ when is_list(PreferredProtocols) ->
+ case tls_record:highest_protocol_version([]) of
+ {3,0} ->
+ throw({error, {options, {not_supported_in_sslv3, {Opt, Value}}}});
+ _ ->
+ validate_binary_list(client_preferred_next_protocols, PreferredProtocols),
+ validate_npn_ordering(Precedence),
+ {Precedence, PreferredProtocols, ?NO_PROTOCOL}
+ end;
+validate_option(client_preferred_next_protocols = Opt, {Precedence, PreferredProtocols, Default} = Value)
+ when is_list(PreferredProtocols), is_binary(Default),
+ byte_size(Default) > 0, byte_size(Default) < 256 ->
+ case tls_record:highest_protocol_version([]) of
+ {3,0} ->
+ throw({error, {options, {not_supported_in_sslv3, {Opt, Value}}}});
+ _ ->
+ validate_binary_list(client_preferred_next_protocols, PreferredProtocols),
+ validate_npn_ordering(Precedence),
+ Value
+ end;
+
+validate_option(client_preferred_next_protocols, undefined) ->
+ undefined;
+validate_option(log_alert, Value) when Value == true;
+ Value == false ->
+ Value;
+validate_option(next_protocols_advertised = Opt, Value) when is_list(Value) ->
+ case tls_record:highest_protocol_version([]) of
+ {3,0} ->
+ throw({error, {options, {not_supported_in_sslv3, {Opt, Value}}}});
+ _ ->
+ validate_binary_list(next_protocols_advertised, Value),
+ Value
+ end;
+
+validate_option(next_protocols_advertised, undefined) ->
+ undefined;
+validate_option(Opt, Value) ->
+ throw({error, {options, {Opt, Value}}}).
+
+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 == 'tlsv1.2';
+ Version == 'tlsv1.1';
+ Version == tlsv1;
+ Version == sslv3 ->
+ validate_versions(Rest, Versions);
+validate_versions([Ver| _], Versions) ->
+ throw({error, {options, {Ver, {versions, Versions}}}}).
+
+validate_inet_option(mode, Value)
+ when Value =/= list, Value =/= binary ->
+ throw({error, {options, {mode,Value}}});
+validate_inet_option(packet, Value)
+ when not (is_atom(Value) orelse is_integer(Value)) ->
+ throw({error, {options, {packet,Value}}});
+validate_inet_option(packet_size, Value)
+ when not is_integer(Value) ->
+ throw({error, {options, {packet_size,Value}}});
+validate_inet_option(header, Value)
+ when not is_integer(Value) ->
+ throw({error, {options, {header,Value}}});
+validate_inet_option(active, Value)
+ when Value =/= true, Value =/= false, Value =/= once ->
+ throw({error, {options, {active,Value}}});
+validate_inet_option(_, _) ->
+ ok.
+
+%% 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() ->
+ [mode, packet, active, header, packet_size].
+
+internal_inet_values() ->
+ [{packet_size,0},{packet, 0},{header, 0},{active, false},{mode,binary}].
+
+socket_options(InetValues) ->
+ #socket_options{
+ mode = proplists:get_value(mode, InetValues, lists),
+ header = proplists:get_value(header, InetValues, 0),
+ active = proplists:get_value(active, InetValues, active),
+ packet = proplists:get_value(packet, InetValues, 0),
+ packet_size = proplists:get_value(packet_size, InetValues)
+ }.
+
+emulated_options(Opts) ->
+ emulated_options(Opts, internal_inet_values(), #socket_options{}).
+
+emulated_options([{mode,Opt}|Opts], Inet, Emulated) ->
+ validate_inet_option(mode,Opt),
+ emulated_options(Opts, Inet, Emulated#socket_options{mode=Opt});
+emulated_options([{header,Opt}|Opts], Inet, Emulated) ->
+ validate_inet_option(header,Opt),
+ emulated_options(Opts, Inet, Emulated#socket_options{header=Opt});
+emulated_options([{active,Opt}|Opts], Inet, Emulated) ->
+ validate_inet_option(active,Opt),
+ emulated_options(Opts, Inet, Emulated#socket_options{active=Opt});
+emulated_options([{packet,Opt}|Opts], Inet, Emulated) ->
+ validate_inet_option(packet,Opt),
+ emulated_options(Opts, Inet, Emulated#socket_options{packet=Opt});
+emulated_options([{packet_size,Opt}|Opts], Inet, Emulated) ->
+ validate_inet_option(packet_size,Opt),
+ emulated_options(Opts, Inet, Emulated#socket_options{packet_size=Opt});
+emulated_options([Opt|Opts], Inet, Emulated) ->
+ emulated_options(Opts, [Opt|Inet], Emulated);
+emulated_options([], Inet,Emulated) ->
+ {Inet, Emulated}.
+
+cipher_suites(Version, []) ->
+ ssl_cipher:suites(Version);
+cipher_suites(Version, [{_,_,_,_}| _] = Ciphers0) -> %% Backwards compatibility
+ Ciphers = [{KeyExchange, Cipher, Hash} || {KeyExchange, Cipher, Hash, _} <- Ciphers0],
+ cipher_suites(Version, Ciphers);
+cipher_suites(Version, [{_,_,_}| _] = Ciphers0) ->
+ Ciphers = [ssl_cipher:suite(C) || C <- Ciphers0],
+ cipher_suites(Version, Ciphers);
+
+cipher_suites(Version, [Cipher0 | _] = Ciphers0) when is_binary(Cipher0) ->
+ Supported0 = ssl_cipher:suites(Version)
+ ++ ssl_cipher:anonymous_suites()
+ ++ ssl_cipher:psk_suites(Version)
+ ++ ssl_cipher:srp_suites(),
+ Supported = ssl_cipher:filter_suites(Supported0),
+ case [Cipher || Cipher <- Ciphers0, lists:member(Cipher, Supported)] of
+ [] ->
+ Supported;
+ Ciphers ->
+ Ciphers
+ end;
+cipher_suites(Version, [Head | _] = Ciphers0) when is_list(Head) ->
+ %% Format: ["RC4-SHA","RC4-MD5"]
+ Ciphers = [ssl_cipher:openssl_suite(C) || C <- Ciphers0],
+ cipher_suites(Version, Ciphers);
+cipher_suites(Version, Ciphers0) ->
+ %% Format: "RC4-SHA:RC4-MD5"
+ Ciphers = [ssl_cipher:openssl_suite(C) || C <- string:tokens(Ciphers0, ":")],
+ cipher_suites(Version, Ciphers).
+
+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.