diff options
| -rw-r--r-- | lib/ssh/src/ssh.erl | 193 | ||||
| -rw-r--r-- | lib/ssh/src/ssh.hrl | 281 | ||||
| -rw-r--r-- | lib/ssh/src/ssh_acceptor_sup.erl | 2 | ||||
| -rw-r--r-- | lib/ssh/src/ssh_channel.erl | 6 | ||||
| -rw-r--r-- | lib/ssh/src/ssh_channel_sup.erl | 2 | ||||
| -rw-r--r-- | lib/ssh/src/ssh_cli.erl | 15 | ||||
| -rw-r--r-- | lib/ssh/src/ssh_client_key_api.erl | 35 | ||||
| -rw-r--r-- | lib/ssh/src/ssh_connect.hrl | 4 | ||||
| -rw-r--r-- | lib/ssh/src/ssh_connection.erl | 78 | ||||
| -rw-r--r-- | lib/ssh/src/ssh_connection_handler.erl | 18 | ||||
| -rw-r--r-- | lib/ssh/src/ssh_daemon_channel.erl | 7 | ||||
| -rw-r--r-- | lib/ssh/src/ssh_file.erl | 21 | ||||
| -rw-r--r-- | lib/ssh/src/ssh_options.erl | 27 | ||||
| -rw-r--r-- | lib/ssh/src/ssh_server_key_api.erl | 12 | ||||
| -rw-r--r-- | lib/ssh/src/ssh_sftpd.erl | 16 | ||||
| -rw-r--r-- | lib/ssh/src/ssh_shell.erl | 15 |
16 files changed, 489 insertions, 243 deletions
diff --git a/lib/ssh/src/ssh.erl b/lib/ssh/src/ssh.erl index 25d537c624..209f53d249 100644 --- a/lib/ssh/src/ssh.erl +++ b/lib/ssh/src/ssh.erl @@ -41,35 +41,51 @@ shell/1, shell/2, shell/3 ]). +%%% "Deprecated" types export: +-export_type([ssh_daemon_ref/0, ssh_connection_ref/0, ssh_channel_id/0]). +-opaque ssh_daemon_ref() :: daemon_ref(). +-opaque ssh_connection_ref() :: connection_ref(). +-opaque ssh_channel_id() :: channel_id(). + + %%% Type exports --export_type([ssh_daemon_ref/0, - ssh_connection_ref/0, - ssh_channel_id/0, +-export_type([daemon_ref/0, + connection_ref/0, + channel_id/0, + client_options/0, client_option/0, + daemon_options/0, daemon_option/0, + common_options/0, role/0, subsystem_spec/0, - subsystem_name/0, - channel_callback/0, - channel_init_args/0, algs_list/0, + double_algs/1, + modify_algs_list/0, alg_entry/0, - simple_algs/0, - double_algs/0 + kex_alg/0, + pubkey_alg/0, + cipher_alg/0, + mac_alg/0, + compression_alg/0, + ip_port/0 ]). --opaque ssh_daemon_ref() :: daemon_ref() . --opaque ssh_connection_ref() :: connection_ref() . --opaque ssh_channel_id() :: channel_id(). + +-opaque daemon_ref() :: pid() . +-opaque channel_id() :: non_neg_integer(). +-type connection_ref() :: pid(). % should be -opaque, but that gives problems %%-------------------------------------------------------------------- --spec start() -> ok | {error, term()}. --spec start(permanent | transient | temporary) -> ok | {error, term()}. -%% %% Description: Starts the ssh application. Default type %% is temporary. see application(3) %%-------------------------------------------------------------------- +-spec start() -> ok | {error, term()}. + start() -> start(temporary). +-spec start(Type) -> ok | {error, term()} when + Type :: permanent | transient | temporary . + start(Type) -> case application:ensure_all_started(ssh, Type) of {ok, _} -> @@ -79,30 +95,32 @@ start(Type) -> end. %%-------------------------------------------------------------------- --spec stop() -> ok | {error, term()}. -%% %% Description: Stops the ssh application. %%-------------------------------------------------------------------- +-spec stop() -> ok | {error, term()}. + stop() -> application:stop(ssh). %%-------------------------------------------------------------------- --spec connect(inet:socket(), proplists:proplist()) -> ok_error(connection_ref()). +%% Description: Starts an ssh connection. +%%-------------------------------------------------------------------- +-spec connect(OpenTcpSocket, Options) -> {ok,connection_ref()} | {error,term()} when + OpenTcpSocket :: open_socket(), + Options :: client_options(). --spec connect(inet:socket(), proplists:proplist(), timeout()) -> ok_error(connection_ref()) - ; (string(), inet:port_number(), proplists:proplist()) -> ok_error(connection_ref()). +connect(OpenTcpSocket, Options) when is_port(OpenTcpSocket), + is_list(Options) -> + connect(OpenTcpSocket, Options, infinity). --spec connect(string(), inet:port_number(), proplists:proplist(), timeout()) -> ok_error(connection_ref()). -%% -%% Description: Starts an ssh connection. -%%-------------------------------------------------------------------- -connect(Socket, UserOptions) when is_port(Socket), - is_list(UserOptions) -> - connect(Socket, UserOptions, infinity). +-spec connect(open_socket(), client_options(), timeout()) -> + {ok,connection_ref()} | {error,term()} + ; (host(), inet:port_number(), client_options()) -> + {ok,connection_ref()} | {error,term()}. -connect(Socket, UserOptions, Timeout) when is_port(Socket), - is_list(UserOptions) -> +connect(Socket, UserOptions, NegotiationTimeout) when is_port(Socket), + is_list(UserOptions) -> case ssh_options:handle_options(client, UserOptions) of {error, Error} -> {error, Error}; @@ -111,16 +129,23 @@ connect(Socket, UserOptions, Timeout) when is_port(Socket), ok -> {ok, {Host,_Port}} = inet:sockname(Socket), Opts = ?PUT_INTERNAL_OPT([{user_pid,self()}, {host,Host}], Options), - ssh_connection_handler:start_connection(client, Socket, Opts, Timeout); + ssh_connection_handler:start_connection(client, Socket, Opts, NegotiationTimeout); {error,SockError} -> {error,SockError} end end; -connect(Host, Port, UserOptions) when is_integer(Port), - Port>0, - is_list(UserOptions) -> - connect(Host, Port, UserOptions, infinity). +connect(Host, Port, Options) when is_integer(Port), + Port>0, + is_list(Options) -> + connect(Host, Port, Options, infinity). + + +-spec connect(Host, Port, Options, NegotiationTimeout) -> {ok,connection_ref()} | {error,term()} when + Host :: host(), + Port :: inet:port_number(), + Options :: client_options(), + NegotiationTimeout :: timeout(). connect(Host0, Port, UserOptions, Timeout) when is_integer(Port), Port>0, @@ -148,7 +173,8 @@ connect(Host0, Port, UserOptions, Timeout) when is_integer(Port), end. %%-------------------------------------------------------------------- --spec close(pid()) -> ok. +-spec close(ConnectionRef) -> ok | {error,term()} when + ConnectionRef :: connection_ref() . %% %% Description: Closes an ssh connection. %%-------------------------------------------------------------------- @@ -156,15 +182,25 @@ close(ConnectionRef) -> ssh_connection_handler:stop(ConnectionRef). %%-------------------------------------------------------------------- --spec connection_info(pid(), [atom()]) -> [{atom(), term()}]. -%% %% Description: Retrieves information about a connection. %%-------------------------------------------------------------------- -connection_info(ConnectionRef, Options) -> - ssh_connection_handler:connection_info(ConnectionRef, Options). +-spec connection_info(ConnectionRef, Keys) -> ConnectionInfo when + ConnectionRef :: connection_ref(), + Keys :: [client_version | server_version | user | peer | sockname], + ConnectionInfo :: [{client_version, Version} + | {server_version, Version} + | {user,string()} + | {peer, {inet:hostname(), ip_port()}} + | {sockname, ip_port()} + ], + Version :: {ProtocolVersion, VersionString::string()}, + ProtocolVersion :: {Major::pos_integer(), Minor::non_neg_integer()} . + +connection_info(Connection, Options) -> + ssh_connection_handler:connection_info(Connection, Options). %%-------------------------------------------------------------------- --spec channel_info(pid(), channel_id(), [atom()]) -> [{atom(), term()}]. +-spec channel_info(connection_ref(), channel_id(), [atom()]) -> proplists:proplist(). %% %% Description: Retrieves information about a connection. %%-------------------------------------------------------------------- @@ -172,18 +208,17 @@ channel_info(ConnectionRef, ChannelId, Options) -> ssh_connection_handler:channel_info(ConnectionRef, ChannelId, Options). %%-------------------------------------------------------------------- --spec daemon(inet:port_number()) -> ok_error(daemon_ref()). --spec daemon(inet:port_number()|inet:socket(), proplists:proplist()) -> ok_error(daemon_ref()). --spec daemon(any | inet:ip_address(), inet:port_number(), proplists:proplist()) -> ok_error(daemon_ref()) - ;(socket, inet:socket(), proplists:proplist()) -> ok_error(daemon_ref()) - . - %% Description: Starts a server listening for SSH connections %% on the given port. %%-------------------------------------------------------------------- +-spec daemon(inet:port_number()) -> {ok,daemon_ref()} | {error,term()}. + daemon(Port) -> daemon(Port, []). + +-spec daemon(inet:port_number()|open_socket(), daemon_options()) -> {ok,daemon_ref()} | {error,term()}. + daemon(Socket, UserOptions) when is_port(Socket) -> try #{} = Options = ssh_options:handle_options(server, UserOptions), @@ -226,6 +261,10 @@ daemon(Port, UserOptions) when 0 =< Port, Port =< 65535 -> daemon(any, Port, UserOptions). +-spec daemon(any | inet:ip_address(), inet:port_number(), daemon_options()) -> {ok,daemon_ref()} | {error,term()} + ;(socket, open_socket(), daemon_options()) -> {ok,daemon_ref()} | {error,term()} + . + daemon(Host0, Port0, UserOptions0) when 0 =< Port0, Port0 =< 65535, Host0 == any ; Host0 == loopback ; is_tuple(Host0) -> try @@ -267,7 +306,12 @@ daemon(_, _, _) -> {error, badarg}. %%-------------------------------------------------------------------- --spec daemon_info(daemon_ref()) -> ok_error( [{atom(), term()}] ). +-spec daemon_info(Daemon) -> {ok, DaemonInfo} | {error,term()} when + Daemon :: daemon_ref(), + DaemonInfo :: [ {ip, inet:ip_address()} + | {port, inet:port_number()} + | {profile, term()} + ]. daemon_info(Pid) -> case catch ssh_system_sup:acceptor_supervisor(Pid) of @@ -290,16 +334,23 @@ daemon_info(Pid) -> end. %%-------------------------------------------------------------------- --spec stop_listener(daemon_ref()) -> ok. --spec stop_listener(inet:ip_address(), inet:port_number()) -> ok. -%% %% Description: Stops the listener, but leaves %% existing connections started by the listener up and running. %%-------------------------------------------------------------------- +-spec stop_listener(daemon_ref()) -> ok. + stop_listener(SysSup) -> ssh_system_sup:stop_listener(SysSup). + + +-spec stop_listener(inet:ip_address(), inet:port_number()) -> ok. + stop_listener(Address, Port) -> stop_listener(Address, Port, ?DEFAULT_PROFILE). + + +-spec stop_listener(any|inet:ip_address(), inet:port_number(), term()) -> ok. + stop_listener(any, Port, Profile) -> map_ip(fun(IP) -> ssh_system_sup:stop_listener(IP, Port, Profile) @@ -310,17 +361,23 @@ stop_listener(Address, Port, Profile) -> end, {address,Address}). %%-------------------------------------------------------------------- --spec stop_daemon(daemon_ref()) -> ok. --spec stop_daemon(inet:ip_address(), inet:port_number()) -> ok. --spec stop_daemon(inet:ip_address(), inet:port_number(), atom()) -> ok. -%% %% Description: Stops the listener and all connections started by %% the listener. %%-------------------------------------------------------------------- +-spec stop_daemon(DaemonRef::daemon_ref()) -> ok. + stop_daemon(SysSup) -> ssh_system_sup:stop_system(SysSup). + + +-spec stop_daemon(inet:ip_address(), inet:port_number()) -> ok. + stop_daemon(Address, Port) -> stop_daemon(Address, Port, ?DEFAULT_PROFILE). + + +-spec stop_daemon(any|inet:ip_address(), inet:port_number(), atom()) -> ok. + stop_daemon(any, Port, Profile) -> map_ip(fun(IP) -> ssh_system_sup:stop_system(IP, Port, Profile) @@ -331,33 +388,37 @@ stop_daemon(Address, Port, Profile) -> end, {address,Address}). %%-------------------------------------------------------------------- --spec shell(inet:socket() | string()) -> _. --spec shell(inet:socket() | string(), proplists:proplist()) -> _. --spec shell(string(), inet:port_number(), proplists:proplist()) -> _. - -%% Host = string() -%% Port = integer() -%% Options = [{Option, Value}] -%% %% Description: Starts an interactive shell to an SSH server on the %% given <Host>. The function waits for user input, %% and will not return until the remote shell is ended.(e.g. on %% exit from the shell) %%-------------------------------------------------------------------- +-spec shell(open_socket() | host()) -> _. + shell(Socket) when is_port(Socket) -> shell(Socket, []); shell(Host) -> shell(Host, ?SSH_DEFAULT_PORT, []). + +-spec shell(open_socket() | host(), client_options()) -> _. + shell(Socket, Options) when is_port(Socket) -> start_shell( connect(Socket, Options) ); shell(Host, Options) -> shell(Host, ?SSH_DEFAULT_PORT, Options). + +-spec shell(Host, Port, Options) -> _ when + Host :: host(), + Port :: inet:port_number(), + Options :: client_options() . + shell(Host, Port, Options) -> start_shell( connect(Host, Port, Options) ). + start_shell({ok, ConnectionRef}) -> case ssh_connection:session_channel(ConnectionRef, infinity) of {ok,ChannelId} -> @@ -366,10 +427,16 @@ start_shell({ok, ConnectionRef}) -> {init_args,[ConnectionRef, ChannelId]}, {cm, ConnectionRef}, {channel_id, ChannelId}], {ok, State} = ssh_channel:init([Args]), - ssh_channel:enter_loop(State); + try + ssh_channel:enter_loop(State) + catch + exit:normal -> + ok + end; Error -> Error end; + start_shell(Error) -> Error. @@ -380,7 +447,7 @@ default_algorithms() -> ssh_transport:default_algorithms(). %%-------------------------------------------------------------------- --spec chk_algos_opts(list(any())) -> algs_list() . +-spec chk_algos_opts(client_options()|daemon_options()) -> internal_options() | {error,term()}. %%-------------------------------------------------------------------- chk_algos_opts(Opts) -> case lists:foldl( diff --git a/lib/ssh/src/ssh.hrl b/lib/ssh/src/ssh.hrl index 0e118ac13f..a3d9a1b1cb 100644 --- a/lib/ssh/src/ssh.hrl +++ b/lib/ssh/src/ssh.hrl @@ -98,35 +98,267 @@ %% Types --type role() :: client | server . --type ok_error(SuccessType) :: {ok, SuccessType} | {error, any()} . --type daemon_ref() :: pid() . +-type role() :: client | server . + +-type host() :: string() | inet:ip_address() | loopback . +-type open_socket() :: gen_tcp:socket(). + +-type subsystem_spec() :: {Name::string(), mod_args()} . + +-type algs_list() :: list( alg_entry() ). +-type alg_entry() :: {kex, [kex_alg()]} + | {public_key, [pubkey_alg()]} + | {cipher, double_algs(cipher_alg())} + | {mac, double_algs(mac_alg())} + | {compression, double_algs(compression_alg())} . + +-type kex_alg() :: 'diffie-hellman-group-exchange-sha1' | + 'diffie-hellman-group-exchange-sha256' | + 'diffie-hellman-group1-sha1' | + 'diffie-hellman-group14-sha1' | + 'diffie-hellman-group14-sha256' | + 'diffie-hellman-group16-sha512' | + 'diffie-hellman-group18-sha512' | + 'ecdh-sha2-nistp256' | + 'ecdh-sha2-nistp384' | + 'ecdh-sha2-nistp521' + . + +-type pubkey_alg() :: 'ecdsa-sha2-nistp256' | + 'ecdsa-sha2-nistp384' | + 'ecdsa-sha2-nistp521' | + 'rsa-sha2-256' | + 'rsa-sha2-512' | + 'ssh-dss' | + 'ssh-rsa' + . + +-type cipher_alg() :: '3des-cbc' | + 'AEAD_AES_128_GCM' | + 'AEAD_AES_256_GCM' | + 'aes128-cbc' | + 'aes128-ctr' | + '[email protected]' | + 'aes192-ctr' | + 'aes256-ctr' | + . + +-type mac_alg() :: 'AEAD_AES_128_GCM' | + 'AEAD_AES_256_GCM' | + 'hmac-sha1' | + 'hmac-sha2-256' | + 'hmac-sha2-512' + . + +-type compression_alg() :: 'none' | + 'zlib' | + . + +-type double_algs(AlgType) :: list( {client2server,[AlgType]} | {server2client,[AlgType]} ) + | [AlgType]. + +-type modify_algs_list() :: list( {append,algs_list()} | {prepend,algs_list()} | {rm,algs_list()} ) . + +-type internal_options() :: ssh_options:private_options(). +-type socket_options() :: [gen_tcp:connect_option() | gen_tcp:listen_option()]. + +-type client_options() :: [ client_option() ] . +-type daemon_options() :: [ daemon_option() ]. + + +-type common_options() :: [ common_option() ]. +-type common_option() :: + user_dir_common_option() + | profile_common_option() + | max_idle_time_common_option() + | key_cb_common_option() + | disconnectfun_common_option() + | unexpectedfun_common_option() + | ssh_msg_debug_fun_common_option() + | rekey_limit_common_option() + | id_string_common_option() + | preferred_algorithms_common_option() + | modify_algorithms_common_option() + | auth_methods_common_option() + | inet_common_option() + | fd_common_option() + . + +-define(COMMON_OPTION, common_option()). + + +-type user_dir_common_option() :: {user_dir, false | string()}. +-type profile_common_option() :: {profile, atom() }. +-type max_idle_time_common_option() :: {idle_time, timeout()}. +-type rekey_limit_common_option() :: {rekey_limit, non_neg_integer() }. + +-type key_cb_common_option() :: {key_cb, Module::atom() | {Module::atom(),Opts::[term()]} } . +-type disconnectfun_common_option() :: + {disconnectfun, fun((Reason::term()) -> void | any()) }. +-type unexpectedfun_common_option() :: + {unexpectedfun, fun((Message::term(),{Host::term(),Port::term()}) -> report | skip ) }. +-type ssh_msg_debug_fun_common_option() :: + {ssh_msg_debug_fun, fun((ssh:connection_ref(),AlwaysDisplay::boolean(),Msg::binary(),LanguageTag::binary()) -> any()) } . + +-type id_string_common_option() :: {id_string, string() | random | {random,Nmin::pos_integer(),Nmax::pos_integer()} }. +-type preferred_algorithms_common_option():: {preferred_algorithms, algs_list()}. +-type modify_algorithms_common_option() :: {modify_algorithms, modify_algs_list()}. +-type auth_methods_common_option() :: {auth_methods, string() }. + +-type inet_common_option() :: {inet, inet | inet6} . +-type fd_common_option() :: {fd, gen_tcp:socket()} . + + +-type opaque_common_options() :: + {transport, {atom(),atom(),atom()} } + | {vsn, {non_neg_integer(),non_neg_integer()} } + | {tstflg, list(term())} + | {user_dir_fun, fun()} + | {max_random_length_padding, non_neg_integer()} . + + + +-type client_option() :: + pref_public_key_algs_client_option() + | pubkey_passphrase_client_options() + | host_accepting_client_options() + | authentication_client_options() + | diffie_hellman_group_exchange_client_option() + | connect_timeout_client_option() + | recv_ext_info_client_option() + | opaque_client_options() + | gen_tcp:connect_option() + | ?COMMON_OPTION . + +-type opaque_client_options() :: + {keyboard_interact_fun, fun((term(),term(),term()) -> term())} + | opaque_common_options(). + +-type pref_public_key_algs_client_option() :: {pref_public_key_algs, [pubkey_alg()] } . + +-type pubkey_passphrase_client_options() :: {dsa_pass_phrase, string()} + | {rsa_pass_phrase, string()} + | {ecdsa_pass_phrase, string()} . + +-type host_accepting_client_options() :: + {silently_accept_hosts, accept_hosts()} + | {user_interaction, boolean()} + | {save_accepted_host, boolean()} + | {quiet_mode, boolean()} . + +-type accept_hosts() :: boolean() + | accept_callback() + | {HashAlgoSpec::fp_digest_alg(), accept_callback()}. + +-type fp_digest_alg() :: 'md5' | + 'sha' | + 'sha224' | + 'sha256' | + 'sha384' | + 'sha512' + . + +-type accept_callback() :: fun((PeerName::string(), fingerprint() ) -> boolean()) . +-type fingerprint() :: string() | [string()]. + +-type authentication_client_options() :: + {user, string()} + | {password, string()} . + +-type diffie_hellman_group_exchange_client_option() :: + {dh_gex_limits, {Min::pos_integer(), I::pos_integer(), Max::pos_integer()} } . + +-type connect_timeout_client_option() :: {connect_timeout, timeout()} . + +-type recv_ext_info_client_option() :: {recv_ext_info, boolean()} . + + + +-type daemon_option() :: + subsystem_daemon_option() + | shell_daemon_option() + | exec_daemon_option() + | ssh_cli_daemon_option() + | authentication_daemon_options() + | diffie_hellman_group_exchange_daemon_option() + | negotiation_timeout_daemon_option() + | hardening_daemon_options() + | callbacks_daemon_options() + | send_ext_info_daemon_option() + | opaque_daemon_options() + | gen_tcp:listen_option() + | ?COMMON_OPTION . --type subsystem_spec() :: {subsystem_name(), {channel_callback(), channel_init_args()}} . --type subsystem_name() :: string() . --type channel_callback() :: atom() . --type channel_init_args() :: list() . +-type subsystem_daemon_option() :: {subsystems, subsystem_spec()}. --type algs_list() :: list( alg_entry() ). --type alg_entry() :: {kex, simple_algs()} - | {public_key, simple_algs()} - | {cipher, double_algs()} - | {mac, double_algs()} - | {compression, double_algs()} . --type simple_algs() :: list( atom() ) . --type double_algs() :: list( {client2server,simple_algs()} | {server2client,simple_algs()} ) - | simple_algs() . +-type shell_daemon_option() :: {shell, mod_fun_args() | 'shell_fun/1'() | 'shell_fun/2'() }. +-type 'shell_fun/1'() :: fun((User::string()) -> pid()) . +-type 'shell_fun/2'() :: fun((User::string(), PeerAddr::inet:ip_address()) -> pid()). --type options() :: #{socket_options := socket_options(), - internal_options := internal_options(), - option_key() => any() - }. +-type exec_daemon_option() :: {exec, 'exec_fun/1'() | 'exec_fun/2'() | 'exec_fun/3'() }. --type socket_options() :: proplists:proplist(). --type internal_options() :: #{option_key() => any()}. +-type 'exec_fun/1'() :: fun((Cmd::string()) -> exec_result()) . +-type 'exec_fun/2'() :: fun((Cmd::string(), User::string()) -> exec_result()) . +-type 'exec_fun/3'() :: fun((Cmd::string(), User::string(), ClientAddr::ip_port()) -> exec_result()) . +-type exec_result() :: {ok,Result::term()} | {error,Reason::term()} . --type option_key() :: atom(). +-type ssh_cli_daemon_option() :: {ssh_cli, mod_args() | no_cli }. +-type send_ext_info_daemon_option() :: {send_ext_info, boolean()} . + +-type authentication_daemon_options() :: + {system_dir, string()} + | {auth_method_kb_interactive_data, prompt_texts() } + | {user_passwords, [{UserName::string(),Pwd::string()}]} + | {password, string()} + | {pwdfun, pwdfun_2() | pwdfun_4()} . + +-type prompt_texts() :: + kb_int_tuple() + | kb_int_fun_3() + . + +-type kb_int_fun_3() :: fun((Peer::ip_port(), User::string(), Service::string()) -> kb_int_tuple()). +-type kb_int_tuple() :: {Name::string(), Instruction::string(), Prompt::string(), Echo::boolean()}. + +-type pwdfun_2() :: fun((User::string(), Password::string()) -> boolean()) . +-type pwdfun_4() :: fun((User::string(), + Password::string(), + PeerAddress::ip_port(), + State::any()) -> + boolean() | disconnect | {boolean(),NewState::any()} + ) . + +-type diffie_hellman_group_exchange_daemon_option() :: + {dh_gex_groups, [explicit_group()] | explicit_group_file() | ssh_moduli_file()} + | {dh_gex_limits, {Min::pos_integer(), Max::pos_integer()} } . + +-type explicit_group() :: {Size::pos_integer(),G::pos_integer(),P::pos_integer()} . +-type explicit_group_file() :: {file,string()} . +-type ssh_moduli_file() :: {ssh_moduli_file,string()}. + +-type negotiation_timeout_daemon_option() :: {negotiation_timeout, timeout()} . + +-type hardening_daemon_options() :: + {max_sessions, pos_integer()} + | {max_channels, pos_integer()} + | {parallel_login, boolean()} + | {minimal_remote_max_packet_size, pos_integer()}. + +-type callbacks_daemon_options() :: + {failfun, fun((User::string(), PeerAddress::inet:ip_address(), Reason::term()) -> _)} + | {connectfun, fun((User::string(), PeerAddress::inet:ip_address(), Method::string()) ->_)} . + +-type opaque_daemon_options() :: + {infofun, fun()} + | opaque_common_options(). + +-type ip_port() :: {inet:ip_address(), inet:port_number()} . + +-type mod_args() :: {Module::atom(), Args::list()} . +-type mod_fun_args() :: {Module::atom(), Function::atom(), Args::list()} . %% Records @@ -134,8 +366,7 @@ { role :: client | role(), peer :: undefined | - {inet:hostname(), - {inet:ip_address(),inet:port_number()}}, %% string version of peer address + {inet:hostname(),ip_port()}, %% string version of peer address local, %% Local sockname. Need this AFTER a socket is closed by i.e. a crash diff --git a/lib/ssh/src/ssh_acceptor_sup.erl b/lib/ssh/src/ssh_acceptor_sup.erl index fc564a359b..10fd4452bf 100644 --- a/lib/ssh/src/ssh_acceptor_sup.erl +++ b/lib/ssh/src/ssh_acceptor_sup.erl @@ -36,8 +36,6 @@ -define(DEFAULT_TIMEOUT, 50000). --spec init( [term()] ) -> {ok,{supervisor:sup_flags(),[supervisor:child_spec()]}} | ignore . - %%%========================================================================= %%% API %%%========================================================================= diff --git a/lib/ssh/src/ssh_channel.erl b/lib/ssh/src/ssh_channel.erl index b90e571448..359e29fdbe 100644 --- a/lib/ssh/src/ssh_channel.erl +++ b/lib/ssh/src/ssh_channel.erl @@ -50,11 +50,11 @@ {ok, NewState :: term()} | {error, Reason :: term()}. -callback handle_msg(Msg ::term(), State :: term()) -> - {ok, State::term()} | {stop, ChannelId::integer(), State::term()}. + {ok, State::term()} | {stop, ChannelId::ssh:channel_id(), State::term()}. --callback handle_ssh_msg({ssh_cm, ConnectionRef::term(), SshMsg::term()}, +-callback handle_ssh_msg({ssh_cm, ConnectionRef::ssh:connection_ref(), SshMsg::term()}, State::term()) -> {ok, State::term()} | - {stop, ChannelId::integer(), + {stop, ChannelId::ssh:channel_id(), State::term()}. -behaviour(gen_server). diff --git a/lib/ssh/src/ssh_channel_sup.erl b/lib/ssh/src/ssh_channel_sup.erl index 8444533fd1..7a12f34049 100644 --- a/lib/ssh/src/ssh_channel_sup.erl +++ b/lib/ssh/src/ssh_channel_sup.erl @@ -50,8 +50,6 @@ start_child(Sup, Callback, Id, Args, Exec) -> %%%========================================================================= %%% Supervisor callback %%%========================================================================= --spec init( [term()] ) -> {ok,{supervisor:sup_flags(),[supervisor:child_spec()]}} | ignore . - init(_Args) -> RestartStrategy = one_for_one, MaxR = 10, diff --git a/lib/ssh/src/ssh_cli.erl b/lib/ssh/src/ssh_cli.erl index 26c7cb45aa..382de90ae1 100644 --- a/lib/ssh/src/ssh_cli.erl +++ b/lib/ssh/src/ssh_cli.erl @@ -49,21 +49,6 @@ %%==================================================================== %% ssh_channel callbacks %%==================================================================== --spec init(Args :: term()) -> - {ok, State :: term()} | {ok, State :: term(), timeout() | hibernate} | - {stop, Reason :: term()} | ignore. - --spec terminate(Reason :: (normal | shutdown | {shutdown, term()} | - term()), - State :: term()) -> - term(). - --spec handle_msg(Msg ::term(), State :: term()) -> - {ok, State::term()} | {stop, ChannelId::integer(), State::term()}. --spec handle_ssh_msg({ssh_cm, ConnectionRef::term(), SshMsg::term()}, - State::term()) -> {ok, State::term()} | - {stop, ChannelId::integer(), - State::term()}. %%-------------------------------------------------------------------- %% Function: init(Args) -> {ok, State} diff --git a/lib/ssh/src/ssh_client_key_api.erl b/lib/ssh/src/ssh_client_key_api.erl index 6e994ff292..d0d8ab25d6 100644 --- a/lib/ssh/src/ssh_client_key_api.erl +++ b/lib/ssh/src/ssh_client_key_api.erl @@ -23,26 +23,25 @@ -include_lib("public_key/include/public_key.hrl"). -include("ssh.hrl"). --export_type([algorithm/0]). - --type algorithm() :: 'ssh-rsa' - | 'ssh-dss' - | 'ecdsa-sha2-nistp256' - | 'ecdsa-sha2-nistp384' - | 'ecdsa-sha2-nistp521' - . - --callback is_host_key(PublicKey :: public_key:public_key(), - Host :: string(), - Algorithm :: algorithm(), - ConnectOptions :: proplists:proplist()) -> +-export_type([client_key_cb_options/0]). + +-type client_key_cb_options() :: [{key_cb_private,term()} | ssh:client_option()]. + +-callback is_host_key(Key :: public_key:public_key(), + Host :: string(), + Algorithm :: ssh:pubkey_alg(), + Options :: client_key_cb_options() + ) -> boolean(). --callback user_key(Algorithm :: algorithm(), - ConnectOptions :: proplists:proplist()) -> - {ok, PrivateKey::public_key:private_key()} | {error, term()}. +-callback user_key(Algorithm :: ssh:pubkey_alg(), + Options :: client_key_cb_options() + ) -> + {ok, PrivateKey :: public_key:private_key()} | {error, string()}. --callback add_host_key(Host :: string(), PublicKey :: public_key:public_key(), - Options :: proplists:proplist()) -> +-callback add_host_key(Host :: string(), + PublicKey :: public_key:public_key(), + Options :: client_key_cb_options() + ) -> ok | {error, Error::term()}. diff --git a/lib/ssh/src/ssh_connect.hrl b/lib/ssh/src/ssh_connect.hrl index a8de5f9a2f..3c61638285 100644 --- a/lib/ssh/src/ssh_connect.hrl +++ b/lib/ssh/src/ssh_connect.hrl @@ -22,10 +22,6 @@ %%% Description : SSH connection protocol --type channel_id() :: pos_integer(). --type connection_ref() :: pid(). - - -define(DEFAULT_PACKET_SIZE, 65536). -define(DEFAULT_WINDOW_SIZE, 10*?DEFAULT_PACKET_SIZE). diff --git a/lib/ssh/src/ssh_connection.erl b/lib/ssh/src/ssh_connection.erl index 2b8780a991..2261d37d6a 100644 --- a/lib/ssh/src/ssh_connection.erl +++ b/lib/ssh/src/ssh_connection.erl @@ -64,29 +64,32 @@ bound_channel/3, encode_ip/1 ]). +-type connection_ref() :: ssh:connection_ref(). +-type channel_id() :: ssh:channel_id(). + %%-------------------------------------------------------------------- %%% API %%-------------------------------------------------------------------- %%-------------------------------------------------------------------- --spec session_channel(connection_ref(), timeout()) -> {ok, channel_id()} | {error, timeout | closed}. --spec session_channel(connection_ref(), integer(), integer(), timeout()) -> {ok, channel_id()} | {error, timeout | closed}. - %% Description: Opens a channel for a ssh session. A session is a %% remote execution of a program. The program may be a shell, an %% application, a system command, or some built-in subsystem. %% -------------------------------------------------------------------- +-spec session_channel(connection_ref(), timeout()) -> + {ok, channel_id()} | {error, timeout | closed}. + session_channel(ConnectionHandler, Timeout) -> - session_channel(ConnectionHandler, - ?DEFAULT_WINDOW_SIZE, ?DEFAULT_PACKET_SIZE, - Timeout). + session_channel(ConnectionHandler, ?DEFAULT_WINDOW_SIZE, ?DEFAULT_PACKET_SIZE, Timeout). -session_channel(ConnectionHandler, InitialWindowSize, - MaxPacketSize, Timeout) -> +-spec session_channel(connection_ref(), integer(), integer(), timeout()) -> + {ok, channel_id()} | {error, timeout | closed}. + +session_channel(ConnectionHandler, InitialWindowSize, MaxPacketSize, Timeout) -> case ssh_connection_handler:open_channel(ConnectionHandler, "session", <<>>, - InitialWindowSize, - MaxPacketSize, Timeout) of + InitialWindowSize, + MaxPacketSize, Timeout) of {open, Channel} -> {ok, Channel}; Error -> @@ -94,55 +97,63 @@ session_channel(ConnectionHandler, InitialWindowSize, end. %%-------------------------------------------------------------------- --spec exec(connection_ref(), channel_id(), string(), timeout()) -> - success | failure | {error, timeout | closed}. - %% Description: Will request that the server start the %% execution of the given command. %%-------------------------------------------------------------------- +-spec exec(connection_ref(), channel_id(), string(), timeout()) -> + success | failure | {error, timeout | closed}. + exec(ConnectionHandler, ChannelId, Command, TimeOut) -> ssh_connection_handler:request(ConnectionHandler, self(), ChannelId, "exec", true, [?string(Command)], TimeOut). %%-------------------------------------------------------------------- --spec shell(connection_ref(), channel_id()) -> _. - %% Description: Will request that the user's default shell (typically %% defined in /etc/passwd in UNIX systems) be started at the other %% end. %%-------------------------------------------------------------------- +-spec shell(connection_ref(), channel_id()) -> + ok | success | failure | {error, timeout}. + shell(ConnectionHandler, ChannelId) -> ssh_connection_handler:request(ConnectionHandler, self(), ChannelId, "shell", false, <<>>, 0). %%-------------------------------------------------------------------- --spec subsystem(connection_ref(), channel_id(), string(), timeout()) -> - success | failure | {error, timeout | closed}. %% %% Description: Executes a predefined subsystem. %%-------------------------------------------------------------------- +-spec subsystem(connection_ref(), channel_id(), string(), timeout()) -> + success | failure | {error, timeout | closed}. + subsystem(ConnectionHandler, ChannelId, SubSystem, TimeOut) -> ssh_connection_handler:request(ConnectionHandler, self(), ChannelId, "subsystem", true, [?string(SubSystem)], TimeOut). %%-------------------------------------------------------------------- --spec send(connection_ref(), channel_id(), iodata()) -> - ok | {error, closed}. --spec send(connection_ref(), channel_id(), integer()| iodata(), timeout() | iodata()) -> - ok | {error, timeout} | {error, closed}. --spec send(connection_ref(), channel_id(), integer(), iodata(), timeout()) -> - ok | {error, timeout} | {error, closed}. -%% -%% %% Description: Sends channel data. %%-------------------------------------------------------------------- +-spec send(connection_ref(), channel_id(), iodata()) -> + ok | {error, timeout | closed}. send(ConnectionHandler, ChannelId, Data) -> send(ConnectionHandler, ChannelId, 0, Data, infinity). + + +-spec send(connection_ref(), channel_id(), integer()| iodata(), timeout() | iodata()) -> + ok | {error, timeout | closed}. + send(ConnectionHandler, ChannelId, Data, TimeOut) when is_integer(TimeOut) -> send(ConnectionHandler, ChannelId, 0, Data, TimeOut); + send(ConnectionHandler, ChannelId, Data, infinity) -> send(ConnectionHandler, ChannelId, 0, Data, infinity); + send(ConnectionHandler, ChannelId, Type, Data) -> send(ConnectionHandler, ChannelId, Type, Data, infinity). + + +-spec send(connection_ref(), channel_id(), integer(), iodata(), timeout()) -> + ok | {error, timeout | closed}. + send(ConnectionHandler, ChannelId, Type, Data, TimeOut) -> ssh_connection_handler:send(ConnectionHandler, ChannelId, Type, Data, TimeOut). @@ -156,7 +167,7 @@ send_eof(ConnectionHandler, Channel) -> ssh_connection_handler:send_eof(ConnectionHandler, Channel). %%-------------------------------------------------------------------- --spec adjust_window(connection_ref(), channel_id(), integer()) -> ok | {error, closed}. +-spec adjust_window(connection_ref(), channel_id(), integer()) -> ok. %% %% %% Description: Adjusts the ssh flowcontrol window. @@ -198,17 +209,18 @@ reply_request(_,false, _, _) -> ok. %%-------------------------------------------------------------------- --spec ptty_alloc(connection_ref(), channel_id(), proplists:proplist()) -> - success | failiure | {error, closed}. --spec ptty_alloc(connection_ref(), channel_id(), proplists:proplist(), timeout()) -> - success | failiure | {error, timeout} | {error, closed}. - -%% -%% %% Description: Sends a ssh connection protocol pty_req. %%-------------------------------------------------------------------- +-spec ptty_alloc(connection_ref(), channel_id(), proplists:proplist()) -> + success | failure | {error, timeout}. + ptty_alloc(ConnectionHandler, Channel, Options) -> ptty_alloc(ConnectionHandler, Channel, Options, infinity). + + +-spec ptty_alloc(connection_ref(), channel_id(), proplists:proplist(), timeout()) -> + success | failure | {error, timeout | closed}. + ptty_alloc(ConnectionHandler, Channel, Options0, TimeOut) -> TermData = backwards_compatible(Options0, []), % FIXME {Width, PixWidth} = pty_default_dimensions(width, TermData), diff --git a/lib/ssh/src/ssh_connection_handler.erl b/lib/ssh/src/ssh_connection_handler.erl index 033f11f4a1..1b3763e9c7 100644 --- a/lib/ssh/src/ssh_connection_handler.erl +++ b/lib/ssh/src/ssh_connection_handler.erl @@ -60,6 +60,9 @@ get_print_info/1 ]). +-type connection_ref() :: ssh:connection_ref(). +-type channel_id() :: ssh:channel_id(). + %%% Behaviour callbacks -export([init/1, callback_mode/0, handle_event/4, terminate/3, format_status/2, code_change/4]). @@ -88,8 +91,8 @@ %%==================================================================== %%-------------------------------------------------------------------- -spec start_link(role(), - inet:socket(), - ssh_options:options() + gen_tcp:socket(), + internal_options() ) -> {ok, pid()}. %% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . start_link(Role, Socket, Options) -> @@ -118,8 +121,8 @@ stop(ConnectionHandler)-> %%-------------------------------------------------------------------- -spec start_connection(role(), - inet:socket(), - ssh_options:options(), + gen_tcp:socket(), + internal_options(), timeout() ) -> {ok, connection_ref()} | {error, term()}. %% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . @@ -359,7 +362,7 @@ alg(ConnectionHandler) -> | undefined, % ex: tcp_closed ssh_params :: #ssh{} | undefined, - socket :: inet:socket() + socket :: gen_tcp:socket() | undefined, decrypted_data_buffer = <<>> :: binary() | undefined, @@ -370,7 +373,6 @@ alg(ConnectionHandler) -> | undefined, last_size_rekey = 0 :: non_neg_integer(), event_queue = [] :: list(), -% opts :: ssh_options:options(), inet_initial_recbuf_size :: pos_integer() | undefined }). @@ -380,8 +382,8 @@ alg(ConnectionHandler) -> %%==================================================================== %%-------------------------------------------------------------------- -spec init_connection_handler(role(), - inet:socket(), - ssh_options:options() + gen_tcp:socket(), + internal_options() ) -> no_return(). %% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . init_connection_handler(Role, Socket, Opts) -> diff --git a/lib/ssh/src/ssh_daemon_channel.erl b/lib/ssh/src/ssh_daemon_channel.erl index 6ca93eff44..72853f2d6a 100644 --- a/lib/ssh/src/ssh_daemon_channel.erl +++ b/lib/ssh/src/ssh_daemon_channel.erl @@ -36,10 +36,10 @@ term(). -callback handle_msg(Msg ::term(), State :: term()) -> - {ok, State::term()} | {stop, ChannelId::integer(), State::term()}. --callback handle_ssh_msg({ssh_cm, ConnectionRef::term(), SshMsg::term()}, + {ok, State::term()} | {stop, ChannelId::ssh:channel_id(), State::term()}. +-callback handle_ssh_msg({ssh_cm, ConnectionRef::ssh:connection_ref(), SshMsg::term()}, State::term()) -> {ok, State::term()} | - {stop, ChannelId::integer(), + {stop, ChannelId::ssh:channel_id(), State::term()}. %%% API @@ -48,6 +48,7 @@ %% gen_server callbacks -export([init/1, terminate/2]). +-spec start(ssh:connection_ref(), ssh:channel_id(), atom(), term()) -> term(). start(ConnectionManager, ChannelId, CallBack, CbInitArgs) -> ssh_channel:start(ConnectionManager, ChannelId, CallBack, CbInitArgs, undefined). diff --git a/lib/ssh/src/ssh_file.erl b/lib/ssh/src/ssh_file.erl index 33792da38f..9cab2fe0bd 100644 --- a/lib/ssh/src/ssh_file.erl +++ b/lib/ssh/src/ssh_file.erl @@ -45,27 +45,6 @@ %%% API -%%% client --spec add_host_key(string(), - public_key:public_key(), - proplists:proplist()) -> ok | {error,term()}. - --spec is_host_key(public_key:public_key(), - string(), - ssh_client_key_api:algorithm(), - proplists:proplist()) -> boolean(). - --spec user_key(ssh_client_key_api:algorithm(), - proplists:proplist()) -> {ok, public_key:private_key()} | {error,term()}. - -%%% server --spec host_key(ssh_server_key_api:algorithm(), - proplists:proplist()) -> {ok, public_key:private_key()} | {error,term()}. - --spec is_auth_key(public_key:public_key(), - string(), proplists:proplist()) -> boolean(). - - %% Used by server host_key(Algorithm, Opts) -> File = file_name(system, file_base_name(Algorithm), Opts), diff --git a/lib/ssh/src/ssh_options.erl b/lib/ssh/src/ssh_options.erl index c05293d1ae..4dd9082250 100644 --- a/lib/ssh/src/ssh_options.erl +++ b/lib/ssh/src/ssh_options.erl @@ -32,7 +32,7 @@ handle_options/2 ]). --export_type([options/0 +-export_type([private_options/0 ]). %%%================================================================ @@ -47,16 +47,23 @@ default => any() }. +-type option_key() :: atom(). + -type option_declarations() :: #{ {option_key(),def} := option_declaration() }. -type error() :: {error,{eoptions,any()}} . +-type private_options() :: #{socket_options := socket_options(), + internal_options := internal_options(), + option_key() => any() + }. + %%%================================================================ %%% %%% Get an option %%% --spec get_value(option_class(), option_key(), options(), +-spec get_value(option_class(), option_key(), private_options(), atom(), non_neg_integer()) -> any() | no_return(). get_value(Class, Key, Opts, _CallerMod, _CallerLine) when is_map(Opts) -> @@ -69,7 +76,7 @@ get_value(Class, Key, Opts, _CallerMod, _CallerLine) -> error({bad_options,Class, Key, Opts, _CallerMod, _CallerLine}). --spec get_value(option_class(), option_key(), options(), fun(() -> any()), +-spec get_value(option_class(), option_key(), private_options(), fun(() -> any()), atom(), non_neg_integer()) -> any() | no_return(). get_value(socket_options, Key, Opts, DefFun, _CallerMod, _CallerLine) when is_map(Opts) -> @@ -91,8 +98,8 @@ get_value(Class, Key, Opts, _DefFun, _CallerMod, _CallerLine) -> %%% Put an option %%% --spec put_value(option_class(), option_in(), options(), - atom(), non_neg_integer()) -> options(). +-spec put_value(option_class(), option_in(), private_options(), + atom(), non_neg_integer()) -> private_options(). put_value(user_options, KeyVal, Opts, _CallerMod, _CallerLine) when is_map(Opts) -> put_user_value(KeyVal, Opts); @@ -131,8 +138,8 @@ put_socket_value(A, SockOpts) when is_atom(A) -> %%% Delete an option %%% --spec delete_key(option_class(), option_key(), options(), - atom(), non_neg_integer()) -> options(). +-spec delete_key(option_class(), option_key(), private_options(), + atom(), non_neg_integer()) -> private_options(). delete_key(internal_options, Key, Opts, _CallerMod, _CallerLine) when is_map(Opts) -> InternalOpts = maps:get(internal_options,Opts), @@ -144,9 +151,7 @@ delete_key(internal_options, Key, Opts, _CallerMod, _CallerLine) when is_map(Opt %%% Initialize the options %%% --spec handle_options(role(), proplists:proplist()) -> options() | error() . - --spec handle_options(role(), proplists:proplist(), options()) -> options() | error() . +-spec handle_options(role(), client_options()|daemon_options()) -> private_options() | error() . handle_options(Role, PropList0) -> handle_options(Role, PropList0, #{socket_options => [], @@ -155,7 +160,7 @@ handle_options(Role, PropList0) -> }). handle_options(Role, PropList0, Opts0) when is_map(Opts0), - is_list(PropList0) -> + is_list(PropList0) -> PropList1 = proplists:unfold(PropList0), try OptionDefinitions = default(Role), diff --git a/lib/ssh/src/ssh_server_key_api.erl b/lib/ssh/src/ssh_server_key_api.erl index 3f1b886fa7..a285bf9475 100644 --- a/lib/ssh/src/ssh_server_key_api.erl +++ b/lib/ssh/src/ssh_server_key_api.erl @@ -23,16 +23,18 @@ -include_lib("public_key/include/public_key.hrl"). -include("ssh.hrl"). --export_type([algorithm/0]). +-export_type([daemon_key_cb_options/0]). --type algorithm() :: ssh_client_key_api:algorithm(). +-type daemon_key_cb_options() :: [{key_cb_private,term()} | ssh:daemon_option()]. --callback host_key(Algorithm :: algorithm(), - DaemonOptions :: proplists:proplist()) -> +-callback host_key(Algorithm :: ssh:pubkey_alg(), + DaemonOptions :: daemon_key_cb_options() + ) -> {ok, PrivateKey :: public_key:private_key()} | {error, term()}. -callback is_auth_key(PublicKey :: public_key:public_key(), User :: string(), - DaemonOptions :: proplists:proplist()) -> + DaemonOptions :: daemon_key_cb_options() + ) -> boolean(). diff --git a/lib/ssh/src/ssh_sftpd.erl b/lib/ssh/src/ssh_sftpd.erl index 945e9f457b..fda9a38a43 100644 --- a/lib/ssh/src/ssh_sftpd.erl +++ b/lib/ssh/src/ssh_sftpd.erl @@ -58,21 +58,7 @@ %%==================================================================== %% API %%==================================================================== --spec init(Args :: term()) -> - {ok, State :: term()} | {ok, State :: term(), timeout() | hibernate} | - {stop, Reason :: term()} | ignore. - --spec terminate(Reason :: (normal | shutdown | {shutdown, term()} | - term()), - State :: term()) -> - term(). - --spec handle_msg(Msg ::term(), State :: term()) -> - {ok, State::term()} | {stop, ChannelId::integer(), State::term()}. --spec handle_ssh_msg({ssh_cm, ConnectionRef::term(), SshMsg::term()}, - State::term()) -> {ok, State::term()} | - {stop, ChannelId::integer(), - State::term()}. +-spec subsystem_spec(list()) -> subsystem_spec(). subsystem_spec(Options) -> {"sftp", {?MODULE, Options}}. diff --git a/lib/ssh/src/ssh_shell.erl b/lib/ssh/src/ssh_shell.erl index 085534592d..c7c63c5c43 100644 --- a/lib/ssh/src/ssh_shell.erl +++ b/lib/ssh/src/ssh_shell.erl @@ -48,21 +48,6 @@ %%==================================================================== %% ssh_channel callbacks %%==================================================================== --spec init(Args :: term()) -> - {ok, State :: term()} | {ok, State :: term(), timeout() | hibernate} | - {stop, Reason :: term()} | ignore. - --spec terminate(Reason :: (normal | shutdown | {shutdown, term()} | - term()), - State :: term()) -> - term(). - --spec handle_msg(Msg ::term(), State :: term()) -> - {ok, State::term()} | {stop, ChannelId::integer(), State::term()}. --spec handle_ssh_msg({ssh_cm, ConnectionRef::term(), SshMsg::term()}, - State::term()) -> {ok, State::term()} | - {stop, ChannelId::integer(), - State::term()}. %%-------------------------------------------------------------------- %% Function: init(Args) -> {ok, State} |