Merge tag 'OTP-19.0' into sverker/19/binary_to_atom-utf8-crash/ERL-474/OTP-14590

1 files changed, 55 insertions, 982 deletions

diff --git a/lib/ssl/src/tls.erl b/lib/ssl/src/tls.erl
index bb02695c12..aa41cd1ba6 100644
--- a/lib/ssl/src/tls.erl
+++ b/lib/ssl/src/tls.erl
@@ -1,165 +1,62 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1999-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2016. All Rights Reserved.
 %%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% 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
 %%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%%     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.
+%%% Purpose : Reflect TLS specific API options (fairly simple wrapper at the moment)
 
 -module(tls).
 
--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_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]).
-
--record(config, {ssl,               %% SSL parameters
-		 inet_user,         %% User set inet options
-		 emulated,          %% #socket_option{} emulated
-		 inet_ssl,          %% inet options for internal ssl socket 
-		 cb                 %% Callback info
-		}).
 
--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.
+-export([connect/2, connect/3, listen/2, accept/1, accept/2,
+	 handshake/1, handshake/2, handshake/3]).
 
 %%--------------------------------------------------------------------
--spec start() -> ok  | {error, reason()}.
--spec start(permanent | transient | temporary) -> ok | {error, reason()}.
 %%
-%% Description: Utility function that starts the ssl, 
-%% crypto and public_key applications. Default type
-%% is temporary. see application(3)
+%% Description: Connect to an TLS server.
 %%--------------------------------------------------------------------
-start() ->
-    application:start(crypto),
-    application:start(asn1),
-    application:start(public_key),
-    application:start(ssl).
 
-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() ->
-    application:stop(ssl).
-
-%%--------------------------------------------------------------------
 -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()}.
 
-%%
-%% Description: Connect to an ssl server.
-%%--------------------------------------------------------------------
-connect(Socket, SslOptions) when is_port(Socket) ->
-    connect(Socket, SslOptions, infinity).
+connect(Socket, Options) when is_port(Socket) ->
+    connect(Socket, Options, 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{cb = CbInfo, ssl = SslOptions, emulated = EmOpts}} ->
-	   
-	    ok = ssl_socket:setopts(Transport, Socket, internal_inet_values()),
-	    case ssl_socket:peername(Transport, Socket) of
-		{ok, {Address, Port}} ->
-		    tls_connection:connect(Address, Port, Socket, 
-					   {SslOptions, EmOpts},
-					   self(), CbInfo, Timeout);
-		{error, Error} ->
-		    {error, Error}
-	    end
-    catch 
-	_:{error, Reason} ->
-            {error, Reason}
-    end;
+-spec connect(host() | port(), [connect_option()] | inet:port_number(),
+	      timeout() | list()) ->
+		     {ok, #sslsocket{}} | {error, reason()}.
 
+connect(Socket, SslOptions, Timeout)  when is_port(Socket) ->
+    TLSOpts = [{protocol, tls} | SslOptions],
+    ssl:connect(Socket, TLSOpts, Timeout);
 connect(Host, Port, Options) ->
     connect(Host, Port, Options, infinity).
 
+-spec connect(host() | port(), inet:port_number(), list(), timeout()) ->
+		     {ok, #sslsocket{}} | {error, reason()}.
+
 connect(Host, Port, Options, Timeout) ->
-    try handle_options(Options, client) of
-	{ok, Config} ->
-	    do_connect(Host,Port,Config,Timeout)
-    catch
-	throw:Error ->
-	    Error
-    end.
+    TLSOpts = [{protocol, tls} | Options],
+    ssl:connect(Host, Port, TLSOpts, Timeout).
 
 %%--------------------------------------------------------------------
 -spec listen(inet:port_number(), [listen_option()]) ->{ok, #sslsocket{}} | {error, reason()}.
@@ -167,873 +64,49 @@ connect(Host, Port, Options, Timeout) ->
 %%
 %% Description: Creates an ssl listen socket.
 %%--------------------------------------------------------------------
-listen(_Port, []) ->
-    {error, nooptions};
-listen(Port, Options0) ->
-    try
-	{ok, Config} = handle_options(Options0, server),
-	#config{cb = {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.
+listen(Port, Options) ->
+    TLSOpts = [{protocol, tls} | Options],
+    ssl:listen(Port, TLSOpts).
+
 %%--------------------------------------------------------------------
--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) ->
-    transport_accept(ListenSocket, infinity).
+-spec accept(#sslsocket{}) -> {ok, #sslsocket{}} |
+					{error, reason()}.
+accept(ListenSocket) ->
+    accept(ListenSocket, infinity).
 
-transport_accept(#sslsocket{pid = {ListenSocket, #config{cb = 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.
+-spec accept(#sslsocket{}, timeout()) -> {ok, #sslsocket{}} |
+						   {error, reason()}.
+accept(Socket, Timeout) ->
+    ssl:transport_accept(Socket, 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) ->
-    ssl_accept(ListenSocket, infinity).
-
-ssl_accept(#sslsocket{} = Socket, Timeout) ->
-    tls_connection:handshake(Socket, Timeout);
-    
-ssl_accept(ListenSocket, SslOptions)  when is_port(ListenSocket) -> 
-    ssl_accept(ListenSocket, SslOptions, infinity).
-
-ssl_accept(Socket, SslOptions, Timeout) when is_port(Socket) -> 
-    {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{cb = 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.
-
-%%--------------------------------------------------------------------
--spec  close(#sslsocket{}) -> term().
-%%
-%% Description: Close an ssl connection
-%%--------------------------------------------------------------------  
-close(#sslsocket{pid = Pid}) when is_pid(Pid) ->
-    tls_connection:close(Pid);
-close(#sslsocket{pid = {ListenSocket, #config{cb={Transport,_, _, _}}}}) ->
-    Transport:close(ListenSocket).
-
-%%--------------------------------------------------------------------
--spec send(#sslsocket{}, iodata()) -> ok | {error, reason()}.
-%% 
-%% Description: Sends data over the ssl connection
-%%--------------------------------------------------------------------
-send(#sslsocket{pid = Pid}, Data) when is_pid(Pid) ->
-    tls_connection:send(Pid, Data);
-send(#sslsocket{pid = {ListenSocket, #config{cb={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) ->
-    recv(Socket, Length, infinity).
-recv(#sslsocket{pid = Pid}, Length, Timeout) when is_pid(Pid) ->
-    tls_connection:recv(Pid, Length, Timeout);
-recv(#sslsocket{pid = {Listen, 
-		       #config{cb={Transport, _, _, _}}}}, _,_) when is_port(Listen)->
-    Transport:recv(Listen, 0). %% {error,enotconn}
-
-%%--------------------------------------------------------------------
--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}, NewOwner) when is_pid(Pid), is_pid(NewOwner) ->
-    tls_connection:new_user(Pid, NewOwner);
-controlling_process(#sslsocket{pid = {Listen,
-				      #config{cb={Transport, _, _, _}}}}, 
-		    NewOwner) when is_port(Listen),
-				   is_pid(NewOwner) ->
-    Transport:controlling_process(Listen, NewOwner).
-
-%%--------------------------------------------------------------------
--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}) when is_pid(Pid) ->
-    tls_connection:info(Pid);
-connection_info(#sslsocket{pid = {Listen, _}}) when is_port(Listen) ->
-    {error, enotconn}.
-
-%%--------------------------------------------------------------------
--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{cb = {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}) when is_pid(Pid) ->
-    case tls_connection:peer_certificate(Pid) of
-	{ok, undefined} ->
-	    {error, no_peercert};
-        Result ->
-	    Result
-    end;
-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}.
-
-%%--------------------------------------------------------------------
--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}) ->
-    tls_connection:negotiated_next_protocol(Pid).
-
--spec cipher_suites() -> [erl_cipher_suite()].
--spec cipher_suites(erlang | openssl | all) -> [erl_cipher_suite()] | [string()].
-			   
-%% Description: Returns all supported cipher suites.
-%%--------------------------------------------------------------------
-cipher_suites() ->
-    cipher_suites(erlang).
-  
-cipher_suites(erlang) ->
-    Version = tls_record:highest_protocol_version([]),
-    [suite_definition(S) || S <- ssl_cipher:suites(Version)];
 
-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)
-	++ ssl_cipher:anonymous_suites()
-	++ ssl_cipher:psk_suites(Version)
-	++ ssl_cipher:srp_suites(),
-    [suite_definition(S) || S <- Supported].
+-spec handshake(#sslsocket{}) -> ok | {error, reason()}.
 
-%%--------------------------------------------------------------------
--spec getopts(#sslsocket{}, [gen_tcp:option_name()]) ->
-		     {ok, [gen_tcp:option()]} | {error, reason()}.
-%% 
-%% Description: Gets options
-%%--------------------------------------------------------------------
-getopts(#sslsocket{pid = Pid}, OptionTags) when is_pid(Pid), is_list(OptionTags) ->
-    tls_connection:get_opts(Pid, OptionTags);
-getopts(#sslsocket{pid = {ListenSocket,  #config{cb = {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}}}.
-
-%%--------------------------------------------------------------------
--spec setopts(#sslsocket{},  [gen_tcp:option()]) -> ok | {error, reason()}.
-%% 
-%% Description: Sets options
-%%--------------------------------------------------------------------
-setopts(#sslsocket{pid = Pid}, Options0) when is_pid(Pid), is_list(Options0)  ->
-    try proplists:expand([{binary, [{mode, binary}]},
-			  {list, [{mode, list}]}], Options0) of
-	Options ->
-	    tls_connection:set_opts(Pid, Options)
-    catch
-	_:_ ->
-	    {error, {options, {not_a_proplist, Options0}}}
-    end;
-
-setopts(#sslsocket{pid = {ListenSocket, #config{cb = {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}}}.
-
-%%---------------------------------------------------------------
--spec shutdown(#sslsocket{}, read | write | read_write) ->  ok | {error, reason()}.
-%%		      
-%% Description: Same as gen_tcp:shutdown/2
-%%--------------------------------------------------------------------
-shutdown(#sslsocket{pid = {Listen, #config{cb={Transport,_, _, _}}}},
-	 How) when is_port(Listen) ->
-    Transport:shutdown(Listen, How);
-shutdown(#sslsocket{pid = Pid}, How) ->
-    tls_connection:shutdown(Pid, How).
-
-%%--------------------------------------------------------------------
--spec sockname(#sslsocket{}) -> {ok, {inet:ip_address(), inet:port_number()}} | {error, reason()}.
-%%		     
-%% Description: Same as inet:sockname/1
-%%--------------------------------------------------------------------
-sockname(#sslsocket{pid = {Listen,  #config{cb={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}) when is_pid(Pid) ->
-    tls_connection: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() ->
-    Vsns = tls_record:supported_protocol_versions(),
-    SupportedVsns = [tls_record:protocol_version(Vsn) || Vsn <- Vsns],
-    AvailableVsns = ?ALL_SUPPORTED_VERSIONS,
-    [{ssl_app, ?VSN}, {supported, SupportedVsns}, {available, AvailableVsns}].
-
-
-%%---------------------------------------------------------------
--spec renegotiate(#sslsocket{}) -> ok | {error, reason()}.
-%% 
-%% Description: Initiates a renegotiation.
-%%--------------------------------------------------------------------
-renegotiate(#sslsocket{pid = Pid}) when is_pid(Pid) ->
-    tls_connection:renegotiation(Pid);
-renegotiate(#sslsocket{pid = {Listen,_}}) when is_port(Listen) ->
-    {error, enotconn}.
-
-%%--------------------------------------------------------------------
--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},
-    Secret, Label, Seed, WantedLength) when is_pid(Pid) ->
-    tls_connection: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() ->
-    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.
-
-%%--------------------------------------------------------------------
--spec random_bytes(integer()) -> binary().
-
-%%
-%% Description: Generates cryptographically secure random sequence if possible
-%% fallbacks on pseudo random function
-%%--------------------------------------------------------------------
-random_bytes(N) ->
-    try crypto:strong_rand_bytes(N) of
-	RandBytes ->
-	    RandBytes
-    catch
-	error:low_entropy ->
-	    crypto:rand_bytes(N)
-    end.
+handshake(ListenSocket) ->
+    handshake(ListenSocket, infinity).
 
-%%%--------------------------------------------------------------
-%%% Internal functions
-%%%--------------------------------------------------------------------
-do_connect(Address, Port,
-	       #config{cb=CbInfo, inet_user=UserOpts, ssl=SslOpts,
-		       emulated=EmOpts,inet_ssl=SocketOpts},
-	       Timeout) ->
-    {Transport, _, _, _} = CbInfo,    
-    try Transport:connect(Address, Port,  SocketOpts, Timeout) of
-	{ok, Socket} ->
-	    tls_connection: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))
-     },
-
-    CbInfo  = proplists:get_value(cb_info, Opts, {gen_tcp, tcp, tcp_closed, tcp_error}),    
-    SslOptions = [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],
-    
-    SockOpts = lists:foldl(fun(Key, PropList) -> 
-				   proplists:delete(Key, PropList)
-			   end, Opts, SslOptions),
-    
-    {SSLsock, Emulated} = emulated_options(SockOpts),
-    {ok, #config{ssl=SSLOptions, emulated=Emulated, inet_ssl=SSLsock,
-		 inet_user=SockOpts, cb=CbInfo}}.
-
-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(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])).
+-spec handshake(#sslsocket{} | port(), timeout()| [ssl_option()
+						    | transport_option()]) ->
+			ok | {ok, #sslsocket{}} | {error, reason()}.
 
-file_error_format({error, Error})->
-    case file:format_error(Error) of 
-	"unknown POSIX error" ->
-	    "decoding error";
-	Str ->
-	    Str
-    end;
-file_error_format(_) ->
-    "decoding error".
+handshake(#sslsocket{} = Socket, Timeout) ->
+    ssl:ssl_accept(Socket, Timeout);
     
-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 ".
+handshake(ListenSocket, SslOptions)  when is_port(ListenSocket) ->
+    handshake(ListenSocket, SslOptions, infinity).
 
-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;
+-spec handshake(port(), [ssl_option()| transport_option()], timeout()) ->
+			{ok, #sslsocket{}} | {error, reason()}.
 
-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.
+handshake(Socket, SslOptions, Timeout) when is_port(Socket) ->
+    ssl:ssl_accept(Socket, SslOptions, Timeout).