From 220ef7dbc2cfc30a8fd6f6d37c09a9f35bbc3797 Mon Sep 17 00:00:00 2001
From: Hans Nilsson Retrieves information about a connection. The number of received messages in this example depends on which OS
and which shell that is used on the machine running the
1> ssh:start().
ok
- 2> {ok, Sshd} = ssh:daemon(8989, [{system_dir, "/tmp/ssh_daemon"},
- {user_dir, "/tmp/otptest_user/.ssh"}]).
+ 2> {ok, Sshd} = ssh:daemon(8989, [{system_dir, "/tmp/ssh_daemon"},
+ {user_dir, "/tmp/otptest_user/.ssh"}]).
{ok,<0.54.0>}
3>
@@ -154,8 +154,8 @@
Do a one-time execution of a remote command over
1> ssh:start().
ok
- 2> ssh:daemon(8989, [{system_dir, "/tmp/ssh_daemon"},
- {user_dir, "/tmp/otptest_user/.ssh"},
- {subsystems, [ssh_sftpd:subsystem_spec([{cwd, "/tmp/sftp/example"}])]}]).
+ 2> ssh:daemon(8989, [{system_dir, "/tmp/ssh_daemon"},
+ {user_dir, "/tmp/otptest_user/.ssh"},
+ {subsystems, [ssh_sftpd:subsystem_spec([{cwd, "/tmp/sftp/example"}])
+ ]}]).
{ok,<0.54.0>}
3>
@@ -248,50 +249,50 @@
The previous write and read example can be extended with encryption and decryption as follows:
- %% First three parameters depending on which crypto type we select:
- Key = <<"This is a 256 bit key. abcdefghi">>,
- Ivec0 = crypto:rand_bytes(16),
- DataSize = 1024, % DataSize rem 16 = 0 for aes_cbc
-
- %% Initialization of the CryptoState, in this case it is the Ivector.
- InitFun = fun() -> {ok, Ivec0, DataSize} end,
-
- %% How to encrypt:
- EncryptFun =
- fun(PlainBin,Ivec) ->
- EncryptedBin = crypto:block_encrypt(aes_cbc256, Key, Ivec, PlainBin),
- {ok, EncryptedBin, crypto:next_iv(aes_cbc,EncryptedBin)}
- end,
-
- %% What to do with the very last block:
- CloseFun =
- fun(PlainBin, Ivec) ->
- EncryptedBin = crypto:block_encrypt(aes_cbc256, Key, Ivec,
- pad(16,PlainBin) %% Last chunk
- ),
- {ok, EncryptedBin}
- end,
-
- Cw = {InitFun,EncryptFun,CloseFun},
- {ok,HandleWrite} = ssh_sftp:open_tar(ChannelPid, ?tar_file_name, [write,{crypto,Cw}]),
- ok = erl_tar:add(HandleWrite, .... ),
- ok = erl_tar:add(HandleWrite, .... ),
- ...
- ok = erl_tar:add(HandleWrite, .... ),
- ok = erl_tar:close(HandleWrite),
-
- %% And for decryption (in this crypto example we could use the same InitFun
- %% as for encryption):
- DecryptFun =
- fun(EncryptedBin,Ivec) ->
- PlainBin = crypto:block_decrypt(aes_cbc256, Key, Ivec, EncryptedBin),
- {ok, PlainBin, crypto:next_iv(aes_cbc,EncryptedBin)}
- end,
-
- Cr = {InitFun,DecryptFun},
- {ok,HandleRead} = ssh_sftp:open_tar(ChannelPid, ?tar_file_name, [read,{crypto,Cw}]),
- {ok,NameValueList} = erl_tar:extract(HandleRead,[memory]),
- ok = erl_tar:close(HandleRead),
+%% First three parameters depending on which crypto type we select:
+Key = <<"This is a 256 bit key. abcdefghi">>,
+Ivec0 = crypto:rand_bytes(16),
+DataSize = 1024, % DataSize rem 16 = 0 for aes_cbc
+
+%% Initialization of the CryptoState, in this case it is the Ivector.
+InitFun = fun() -> {ok, Ivec0, DataSize} end,
+
+%% How to encrypt:
+EncryptFun =
+ fun(PlainBin,Ivec) ->
+ EncryptedBin = crypto:block_encrypt(aes_cbc256, Key, Ivec, PlainBin),
+ {ok, EncryptedBin, crypto:next_iv(aes_cbc,EncryptedBin)}
+ end,
+
+%% What to do with the very last block:
+CloseFun =
+ fun(PlainBin, Ivec) ->
+ EncryptedBin = crypto:block_encrypt(aes_cbc256, Key, Ivec,
+ pad(16,PlainBin) %% Last chunk
+ ),
+ {ok, EncryptedBin}
+ end,
+
+Cw = {InitFun,EncryptFun,CloseFun},
+{ok,HandleWrite} = ssh_sftp:open_tar(ChannelPid, ?tar_file_name, [write,{crypto,Cw}]),
+ok = erl_tar:add(HandleWrite, .... ),
+ok = erl_tar:add(HandleWrite, .... ),
+...
+ok = erl_tar:add(HandleWrite, .... ),
+ok = erl_tar:close(HandleWrite),
+
+%% And for decryption (in this crypto example we could use the same InitFun
+%% as for encryption):
+DecryptFun =
+ fun(EncryptedBin,Ivec) ->
+ PlainBin = crypto:block_decrypt(aes_cbc256, Key, Ivec, EncryptedBin),
+ {ok, PlainBin, crypto:next_iv(aes_cbc,EncryptedBin)}
+ end,
+
+Cr = {InitFun,DecryptFun},
+{ok,HandleRead} = ssh_sftp:open_tar(ChannelPid, ?tar_file_name, [read,{crypto,Cw}]),
+{ok,NameValueList} = erl_tar:extract(HandleRead,[memory]),
+ok = erl_tar:close(HandleRead),
@@ -360,9 +361,9 @@ terminate(_Reason, _State) ->
1> ssh:start().
ok
- 2> ssh:daemon(8989, [{system_dir, "/tmp/ssh_daemon"},
- {user_dir, "/tmp/otptest_user/.ssh"}
- {subsystems, [{"echo_n", {ssh_echo_server, [10]}}]}]).
+ 2> ssh:daemon(8989, [{system_dir, "/tmp/ssh_daemon"},
+ {user_dir, "/tmp/otptest_user/.ssh"}
+ {subsystems, [{"echo_n", {ssh_echo_server, [10]}}]}]).
{ok,<0.54.0>}
3>
--
cgit v1.2.3
From 5e7158109d659d6b8668250e308c3c4dd57f15ae Mon Sep 17 00:00:00 2001
From: Hans Nilsson Connects to an SSH server. No channel is started. This is done
@@ -177,7 +177,8 @@
Sets a time-out on the transport layer
- connection. Defaults to
Opaque to the user, returned by
=
=