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authorFredrik Gustafsson <[email protected]>2013-08-21 08:40:56 +0200
committerFredrik Gustafsson <[email protected]>2013-08-21 08:40:56 +0200
commitbabcd2b454b37f195721c501f014486e4c5617b2 (patch)
treed1f687e0767dacfacdfce092066e6bc9b9e74d90 /lib/ssh/src/ssh_transport.erl
parent68cbc7315be2db64622f2cb4a168ad60efb90259 (diff)
parent4f0f336665ea63a7865881e1f41e435de4342077 (diff)
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Merge branch 'lpg/openssh_zlib/OTP-11256' into maint
* lpg/openssh_zlib/OTP-11256: ssh: added basic connection testcase for openssh zlib Add openssh_zlib compression type to ssh_transport
Diffstat (limited to 'lib/ssh/src/ssh_transport.erl')
-rw-r--r--lib/ssh/src/ssh_transport.erl37
1 files changed, 33 insertions, 4 deletions
diff --git a/lib/ssh/src/ssh_transport.erl b/lib/ssh/src/ssh_transport.erl
index beaffdc025..682d766d99 100644
--- a/lib/ssh/src/ssh_transport.erl
+++ b/lib/ssh/src/ssh_transport.erl
@@ -206,6 +206,7 @@ key_exchange_init_msg(Ssh0) ->
kex_init(#ssh{role = Role, opts = Opts, available_host_keys = HostKeyAlgs}) ->
Random = ssh_bits:random(16),
Compression = case proplists:get_value(compression, Opts, none) of
+ openssh_zlib -> ["[email protected]", "none"];
zlib -> ["zlib", "none"];
none -> ["none", "zlib"]
end,
@@ -855,13 +856,14 @@ decrypt(#ssh{decrypt = 'aes128-cbc', decrypt_keys = Key,
IV = crypto:next_iv(aes_cbc, Data),
{Ssh#ssh{decrypt_ctx = IV}, Dec}.
-
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Compression
%%
-%% none REQUIRED no compression
-%% zlib OPTIONAL ZLIB (LZ77) compression
+%% none REQUIRED no compression
+%% zlib OPTIONAL ZLIB (LZ77) compression
+%% openssh_zlib OPTIONAL ZLIB (LZ77) compression
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
compress_init(SSH) ->
compress_init(SSH, 1).
@@ -870,19 +872,32 @@ compress_init(#ssh{compress = none} = Ssh, _) ->
compress_init(#ssh{compress = zlib} = Ssh, Level) ->
Zlib = zlib:open(),
ok = zlib:deflateInit(Zlib, Level),
+ {ok, Ssh#ssh{compress_ctx = Zlib}};
+compress_init(#ssh{compress = '[email protected]'} = Ssh, Level) ->
+ Zlib = zlib:open(),
+ ok = zlib:deflateInit(Zlib, Level),
{ok, Ssh#ssh{compress_ctx = Zlib}}.
-
compress_final(#ssh{compress = none} = Ssh) ->
{ok, Ssh};
compress_final(#ssh{compress = zlib, compress_ctx = Context} = Ssh) ->
zlib:close(Context),
+ {ok, Ssh#ssh{compress = none, compress_ctx = undefined}};
+compress_final(#ssh{compress = '[email protected]', authenticated = false} = Ssh) ->
+ {ok, Ssh};
+compress_final(#ssh{compress = '[email protected]', compress_ctx = Context, authenticated = true} = Ssh) ->
+ zlib:close(Context),
{ok, Ssh#ssh{compress = none, compress_ctx = undefined}}.
compress(#ssh{compress = none} = Ssh, Data) ->
{Ssh, Data};
compress(#ssh{compress = zlib, compress_ctx = Context} = Ssh, Data) ->
Compressed = zlib:deflate(Context, Data, sync),
+ {Ssh, list_to_binary(Compressed)};
+compress(#ssh{compress = '[email protected]', authenticated = false} = Ssh, Data) ->
+ {Ssh, Data};
+compress(#ssh{compress = '[email protected]', compress_ctx = Context, authenticated = true} = Ssh, Data) ->
+ Compressed = zlib:deflate(Context, Data, sync),
{Ssh, list_to_binary(Compressed)}.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -894,18 +909,32 @@ decompress_init(#ssh{decompress = none} = Ssh) ->
decompress_init(#ssh{decompress = zlib} = Ssh) ->
Zlib = zlib:open(),
ok = zlib:inflateInit(Zlib),
+ {ok, Ssh#ssh{decompress_ctx = Zlib}};
+decompress_init(#ssh{decompress = '[email protected]'} = Ssh) ->
+ Zlib = zlib:open(),
+ ok = zlib:inflateInit(Zlib),
{ok, Ssh#ssh{decompress_ctx = Zlib}}.
decompress_final(#ssh{decompress = none} = Ssh) ->
{ok, Ssh};
decompress_final(#ssh{decompress = zlib, decompress_ctx = Context} = Ssh) ->
zlib:close(Context),
+ {ok, Ssh#ssh{decompress = none, decompress_ctx = undefined}};
+decompress_final(#ssh{decompress = '[email protected]', authenticated = false} = Ssh) ->
+ {ok, Ssh};
+decompress_final(#ssh{decompress = '[email protected]', decompress_ctx = Context, authenticated = true} = Ssh) ->
+ zlib:close(Context),
{ok, Ssh#ssh{decompress = none, decompress_ctx = undefined}}.
decompress(#ssh{decompress = none} = Ssh, Data) ->
{Ssh, Data};
decompress(#ssh{decompress = zlib, decompress_ctx = Context} = Ssh, Data) ->
Decompressed = zlib:inflate(Context, Data),
+ {Ssh, list_to_binary(Decompressed)};
+decompress(#ssh{decompress = '[email protected]', authenticated = false} = Ssh, Data) ->
+ {Ssh, Data};
+decompress(#ssh{decompress = '[email protected]', decompress_ctx = Context, authenticated = true} = Ssh, Data) ->
+ Decompressed = zlib:inflate(Context, Data),
{Ssh, list_to_binary(Decompressed)}.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%