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-rw-r--r--lib/ssh/src/ssh_file.erl625
1 files changed, 186 insertions, 439 deletions
diff --git a/lib/ssh/src/ssh_file.erl b/lib/ssh/src/ssh_file.erl
index 12180f56bb..97ebf77e82 100644
--- a/lib/ssh/src/ssh_file.erl
+++ b/lib/ssh/src/ssh_file.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2005-2011. All Rights Reserved.
+%% Copyright Ericsson AB 2005-2012. 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
@@ -23,80 +23,93 @@
-module(ssh_file).
--include("ssh.hrl").
--include("PKCS-1.hrl").
--include("DSS.hrl").
-
+-include_lib("public_key/include/public_key.hrl").
-include_lib("kernel/include/file.hrl").
--export([public_host_dsa_key/2,private_host_dsa_key/2,
- public_host_rsa_key/2,private_host_rsa_key/2,
- public_host_key/2,private_host_key/2,
- lookup_host_key/3, add_host_key/3, % del_host_key/2,
- lookup_user_key/3, ssh_dir/2, file_name/3]).
-
--export([private_identity_key/2,
- public_identity_key/2]).
-%% identity_keys/2]).
-
--export([encode_public_key/1, decode_public_key_v2/2]).
+-include("ssh.hrl").
--import(lists, [reverse/1, append/1]).
+-export([host_key/2,
+ user_key/2,
+ is_host_key/4,
+ add_host_key/3,
+ is_auth_key/4]).
--define(DBG_PATHS, true).
-define(PERM_700, 8#700).
-define(PERM_644, 8#644).
+
%% API
-public_host_dsa_key(Type, Opts) ->
- File = file_name(Type, "ssh_host_dsa_key.pub", Opts),
- read_public_key_v2(File, "ssh-dss").
-
-private_host_dsa_key(Type, Opts) ->
- File = file_name(Type, "ssh_host_dsa_key", Opts),
- read_private_key_v2(File, "ssh-dss").
-
-public_host_rsa_key(Type, Opts) ->
- File = file_name(Type, "ssh_host_rsa_key.pub", Opts),
- read_public_key_v2(File, "ssh-rsa").
-
-private_host_rsa_key(Type, Opts) ->
- File = file_name(Type, "ssh_host_rsa_key", Opts),
- read_private_key_v2(File, "ssh-rsa").
-
-public_host_key(Type, Opts) ->
- File = file_name(Type, "ssh_host_key", Opts),
- case read_private_key_v1(File,public) of
- {error, enoent} ->
- read_public_key_v1(File++".pub");
- Result ->
- Result
- end.
-
-private_host_key(Type, Opts) ->
- File = file_name(Type, "ssh_host_key", Opts),
- read_private_key_v1(File,private).
+%% Used by server
+host_key(Algorithm, Opts) ->
+ File = file_name(system, file_base_name(Algorithm), Opts),
+ Password = proplists:get_value(password, Opts, ignore),
+ decode(File, Password).
+is_auth_key(Key, User, Alg, Opts) ->
+ case lookup_user_key(Key, User, Alg, Opts) of
+ {ok, Key} ->
+ true;
+ _ ->
+ false
+ end.
-%% in: "host" out: "host,1.2.3.4.
-add_ip(Host) ->
- case inet:getaddr(Host, inet) of
- {ok, Addr} ->
- case ssh_connection:encode_ip(Addr) of
- false -> Host;
- IPString -> Host ++ "," ++ IPString
- end;
- _ -> Host
- end.
-replace_localhost("localhost") ->
- {ok, Hostname} = inet:gethostname(),
- Hostname;
-replace_localhost(Host) ->
- Host.
+%% Used by client
+is_host_key(Key, PeerName, Algorithm, Opts) ->
+ case lookup_host_key(PeerName, Algorithm, Opts) of
+ {ok, Key} ->
+ true;
+ _ ->
+ false
+ end.
+
+user_key(Alg, Opts) ->
+ File = file_name(user, identity_key_filename(Alg), Opts),
+ Password = proplists:get_value(password, Opts, ignore),
+ decode(File, Password).
+
+
+%% Internal functions %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+file_base_name('ssh-rsa') ->
+ "ssh_host_rsa_key";
+file_base_name('ssh-dss') ->
+ "ssh_host_dsa_key";
+file_base_name(_) ->
+ "ssh_host_key".
+
+decode(File, Password) ->
+ try
+ {ok, decode_ssh_file(read_ssh_file(File), Password)}
+ catch
+ throw:Reason ->
+ {error, Reason};
+ error:Reason ->
+ {error, Reason}
+ end.
+
+read_ssh_file(File) ->
+ {ok, Bin} = file:read_file(File),
+ Bin.
+
+%% Public key
+decode_ssh_file(SshBin, public_key) ->
+ public_key:ssh_decode(SshBin, public_key);
+
+%% Private Key
+decode_ssh_file(Pem, Password) ->
+ case public_key:pem_decode(Pem) of
+ [{_, _, not_encrypted} = Entry] ->
+ public_key:pem_entry_decode(Entry);
+ [Entry] when Password =/= ignore ->
+ public_key:pem_entry_decode(Entry, Password);
+ _ ->
+ throw("No pass phrase provided for private key file")
+ end.
+
%% lookup_host_key
%% return {ok, Key(s)} or {error, not_found}
@@ -106,15 +119,6 @@ lookup_host_key(Host, Alg, Opts) ->
Host1 = replace_localhost(Host),
do_lookup_host_key(Host1, Alg, Opts).
-do_lookup_host_key(Host, Alg, Opts) ->
- case file:open(file_name(user, "known_hosts", Opts), [read]) of
- {ok, Fd} ->
- Res = lookup_host_key_fd(Fd, Host, Alg),
- file:close(Fd),
- Res;
- {error, enoent} -> {error, not_found};
- Error -> Error
- end.
add_host_key(Host, Key, Opts) ->
Host1 = add_ip(replace_localhost(Host)),
@@ -129,418 +133,161 @@ add_host_key(Host, Key, Opts) ->
Error
end.
-%% del_host_key(Host, Opts) ->
-%% Host1 = replace_localhost(Host),
-%% case file:open(file_name(user, "known_hosts", Opts),[write,read]) of
-%% {ok, Fd} ->
-%% Res = del_key_fd(Fd, Host1),
-%% file:close(Fd),
-%% Res;
-%% Error ->
-%% Error
-%% end.
+lookup_user_key(Key, User, Alg, Opts) ->
+ SshDir = ssh_dir({remoteuser,User}, Opts),
+ case lookup_user_key_f(Key, User, SshDir, Alg, "authorized_keys", Opts) of
+ {ok, Key} ->
+ {ok, Key};
+ _ ->
+ lookup_user_key_f(Key, User, SshDir, Alg, "authorized_keys2", Opts)
+ end.
+
-identity_key_filename("ssh-dss") -> "id_dsa";
-identity_key_filename("ssh-rsa") -> "id_rsa".
+%%
+%% Utils
+%%
-private_identity_key(Alg, Opts) ->
- Path = file_name(user, identity_key_filename(Alg), Opts),
- read_private_key_v2(Path, Alg).
-
-public_identity_key(Alg, Opts) ->
- Path = file_name(user, identity_key_filename(Alg) ++ ".pub", Opts),
- read_public_key_v2(Path, Alg).
-
-
-read_public_key_v2(File, Type) ->
- case file:read_file(File) of
- {ok,Bin} ->
- List = binary_to_list(Bin),
- case lists:prefix(Type, List) of
- true ->
- List1 = lists:nthtail(length(Type), List),
- K_S = ssh_bits:b64_decode(List1),
- decode_public_key_v2(K_S, Type);
- false ->
- {error, bad_format}
+%% server use this to find individual keys for
+%% an individual user when user tries to login
+%% with publickey
+ssh_dir({remoteuser, User}, Opts) ->
+ case proplists:get_value(user_dir_fun, Opts) of
+ undefined ->
+ case proplists:get_value(user_dir, Opts) of
+ undefined ->
+ default_user_dir();
+ Dir ->
+ Dir
end;
- Error ->
- Error
- end.
-
-decode_public_key_v2(K_S, "ssh-rsa") ->
- case ssh_bits:decode(K_S,[string,mpint,mpint]) of
- ["ssh-rsa", E, N] ->
- {ok, #ssh_key { type = rsa,
- public = {N,E},
- comment=""}};
- _ ->
- {error, bad_format}
+ FUN ->
+ FUN(User)
end;
-decode_public_key_v2(K_S, "ssh-dss") ->
- case ssh_bits:decode(K_S,[string,mpint,mpint,mpint,mpint]) of
- ["ssh-dss",P,Q,G,Y] ->
- {ok,#ssh_key { type = dsa,
- public = {P,Q,G,Y}
- }};
- _A ->
- {error, bad_format}
+
+%% client use this to find client ssh keys
+ssh_dir(user, Opts) ->
+ case proplists:get_value(user_dir, Opts, false) of
+ false -> default_user_dir();
+ D -> D
end;
-decode_public_key_v2(_, _) ->
- {error, bad_format}.
-
-read_public_key_v1(File) ->
- case file:read_file(File) of
- {ok,Bin} ->
- List = binary_to_list(Bin),
- case io_lib:fread("~d ~d ~d ~s", List) of
- {ok,[_Sz,E,N,Comment],_} ->
- {ok,#ssh_key { type = rsa,
- public ={N,E},
- comment = Comment }};
- _Error ->
- {error, bad_format}
- end;
- Error ->
- Error
- end.
+%% server use this to find server host keys
+ssh_dir(system, Opts) ->
+ proplists:get_value(system_dir, Opts, "/etc/ssh").
-%% pem_type("ssh-dss") -> "DSA";
-%% pem_type("ssh-rsa") -> "RSA".
-
-read_private_key_v2(File, Type) ->
- case file:read_file(File) of
- {ok, PemBin} ->
- case catch (public_key:pem_decode(PemBin)) of
- [{_, Bin, not_encrypted}] ->
- decode_private_key_v2(Bin, Type);
- Error -> %% Note we do not handle password encrypted keys at the moment
- {error, Error}
- end;
- {error, Reason} ->
- {error, Reason}
- end.
-%% case file:read_file(File) of
-%% {ok,Bin} ->
-%% case read_pem(binary_to_list(Bin), pem_type(Type)) of
-%% {ok,Bin1} ->
-%% decode_private_key_v2(Bin1, Type);
-%% Error ->
-%% Error
-%% end;
-%% Error ->
-%% Error
-%% end.
-
-decode_private_key_v2(Private,"ssh-rsa") ->
- case 'PKCS-1':decode( 'RSAPrivateKey', Private) of
- {ok,RSA} -> %% FIXME Check for two-prime version
- {ok, #ssh_key { type = rsa,
- public = {RSA#'RSAPrivateKey'.modulus,
- RSA#'RSAPrivateKey'.publicExponent},
- private = {RSA#'RSAPrivateKey'.modulus,
- RSA#'RSAPrivateKey'.privateExponent}
- }};
- Error ->
- Error
- end;
-decode_private_key_v2(Private, "ssh-dss") ->
- case 'DSS':decode('DSAPrivateKey', Private) of
- {ok,DSA} -> %% FIXME Check for two-prime version
- {ok, #ssh_key { type = dsa,
- public = {DSA#'DSAPrivateKey'.p,
- DSA#'DSAPrivateKey'.q,
- DSA#'DSAPrivateKey'.g,
- DSA#'DSAPrivateKey'.y},
- private= {DSA#'DSAPrivateKey'.p,
- DSA#'DSAPrivateKey'.q,
- DSA#'DSAPrivateKey'.g,
- DSA#'DSAPrivateKey'.x}
- }};
- _ ->
- {error,bad_format}
- end.
-%% SSH1 private key format
-%% <<"SSH PRIVATE KEY FILE FORMATE 1.1\n" 0:8
-%% CipherNum:8, Reserved:32,
-%% NSz/uint32, N/bignum, E/bignum, Comment/string,
-%%
-%% [ R0:8 R1:8 R0:8 R1:8, D/bignum, IQMP/bignum, Q/bignum, P/bignum, Pad(8)]>>
-%%
-%% where [ ] is encrypted using des3 (ssh1 version) and
-%% a posssibly empty pass phrase using md5(passphase) as key
-%%
-
-read_private_key_v1(File, Type) ->
- case file:read_file(File) of
- {ok,<<"SSH PRIVATE KEY FILE FORMAT 1.1\n",0,
- CipherNum,_Resereved:32,Bin/binary>>} ->
- decode_private_key_v1(Bin, CipherNum,Type);
- {ok,_} ->
- {error, bad_format};
- Error ->
- Error
- end.
+file_name(Type, Name, Opts) ->
+ FN = filename:join(ssh_dir(Type, Opts), Name),
+ FN.
-decode_private_key_v1(Bin, CipherNum, Type) ->
- case ssh_bits:decode(Bin,0,[uint32, bignum, bignum, string]) of
- {Offset,[_NSz,N,E,Comment]} ->
- if Type == public ->
- {ok,#ssh_key { type=rsa,
- public={N,E},
- comment=Comment}};
- Type == private ->
- <<_:Offset/binary, Encrypted/binary>> = Bin,
- case ssh_bits:decode(decrypt1(Encrypted, CipherNum),0,
- [uint32, bignum, bignum,
- bignum, bignum,{pad,8}]) of
- {_,[_,D,IQMP,Q,P]} ->
- {ok,#ssh_key { type=rsa,
- public={N,E},
- private={D,IQMP,Q,P},
- comment=Comment}};
- _ ->
- {error,bad_format}
- end
- end;
- _ ->
- {error,bad_format}
- end.
-decrypt1(Bin, CipherNum) ->
- decrypt1(Bin, CipherNum,"").
+%% in: "host" out: "host,1.2.3.4.
+add_ip(Host) ->
+ case inet:getaddr(Host, inet) of
+ {ok, Addr} ->
+ case ssh_connection:encode_ip(Addr) of
+ false -> Host;
+ IPString -> Host ++ "," ++ IPString
+ end;
+ _ -> Host
+ end.
+
+replace_localhost("localhost") ->
+ {ok, Hostname} = inet:gethostname(),
+ Hostname;
+replace_localhost(Host) ->
+ Host.
-decrypt1(Bin, CipherNum, Phrase) ->
- if CipherNum == ?SSH_CIPHER_NONE; Phrase == "" ->
- Bin;
- CipherNum == ?SSH_CIPHER_3DES ->
- <<K1:8/binary, K2:8/binary>> = erlang:md5(Phrase),
- K3 = K1,
- IV = <<0,0,0,0,0,0,0,0>>,
- Bin1 = crypto:des_cbc_decrypt(K3,IV,Bin),
- Bin2 = crypto:des_cbc_encrypt(K2,IV,Bin1),
- crypto:des_cbc_decrypt(K1,IV,Bin2)
+do_lookup_host_key(Host, Alg, Opts) ->
+ case file:open(file_name(user, "known_hosts", Opts), [read, binary]) of
+ {ok, Fd} ->
+ Res = lookup_host_key_fd(Fd, Host, Alg),
+ file:close(Fd),
+ {ok, Res};
+ {error, enoent} -> {error, not_found};
+ Error -> Error
end.
-%% encrypt1(Bin, CipherNum) ->
-%% encrypt1(Bin, CipherNum,"").
-
-%% encrypt1(Bin, CipherNum, Phrase) ->
-%% if CipherNum == ?SSH_CIPHER_NONE; Phrase == "" ->
-%% Bin;
-%% CipherNum == ?SSH_CIPHER_3DES ->
-%% <<K1:8/binary, K2:8/binary>> = erlang:md5(Phrase),
-%% K3 = K1,
-%% IV = <<0,0,0,0,0,0,0,0>>,
-%% Bin1 = crypto:des_cbc_encrypt(K1,IV,Bin),
-%% Bin2 = crypto:des_cbc_decrypt(K2,IV,Bin1),
-%% crypto:des_cbc_encrypt(K3,IV,Bin2)
-%% end.
-
-lookup_host_key_fd(Fd, Host, Alg) ->
+identity_key_filename("ssh-dss") -> "id_dsa";
+identity_key_filename("ssh-rsa") -> "id_rsa".
+
+
+lookup_host_key_fd(Fd, Host, KeyType) ->
case io:get_line(Fd, '') of
eof ->
{error, not_found};
Line ->
- case string:tokens(Line, " ") of
- [HostList, Alg, KeyData] ->
-%% io:format(" ~p lookup_host_key_fd: HostList ~p Alg ~p KeyData ~p\n",
-%% [Host, HostList, Alg, KeyData]),
- case lists:member(Host, string:tokens(HostList, ",")) of
- true ->
- decode_public_key_v2(ssh_bits:b64_decode(KeyData), Alg);
- false ->
- lookup_host_key_fd(Fd, Host, Alg)
- end;
- _ ->
- lookup_host_key_fd(Fd, Host, Alg)
+ case public_key:ssh_decode(Line, known_hosts) of
+ [{Key, Attributes}] ->
+ handle_host(Fd, Host, proplists:get_value(hostnames, Attributes), Key, KeyType);
+ [] ->
+ lookup_host_key_fd(Fd, Host, KeyType)
end
end.
-
-
-%% del_key_fd(Fd, Host) ->
-%% del_key_fd(Fd, Host, 0, 0).
-
-%% del_key_fd(Fd, Host, ReadPos0, WritePos0) ->
-%% case io:get_line(Fd, '') of
-%% eof ->
-%% if ReadPos0 == WritePos0 ->
-%% ok;
-%% true ->
-%% file:truncate(Fd)
-%% end;
-%% Line ->
-%% {ok,ReadPos1} = file:position(Fd, cur),
-%% case string:tokens(Line, " ") of
-%% [HostList, _Type, _KeyData] ->
-%% case lists:member(Host, string:tokens(HostList, ",")) of
-%% true ->
-%% del_key_fd(Fd, Host, ReadPos1, WritePos0);
-%% false ->
-%% if ReadPos0 == WritePos0 ->
-%% del_key_fd(Fd, Host, ReadPos1, ReadPos1);
-%% true ->
-%% file:position(Fd, WritePos0),
-%% file:write(Fd, Line),
-%% {ok,WritePos1} = file:position(Fd,cur),
-%% del_key_fd(Fd, Host, ReadPos1, WritePos1)
-%% end
-%% end;
-%% _ ->
-%% if ReadPos0 == WritePos0 ->
-%% del_key_fd(Fd, Host, ReadPos1, ReadPos1);
-%% true ->
-%% file:position(Fd, WritePos0),
-%% file:write(Fd, Line),
-%% {ok,WritePos1} = file:position(Fd,cur),
-%% del_key_fd(Fd, Host, ReadPos1, WritePos1)
-%% end
-%% end
-%% end.
-
-
-add_key_fd(Fd, Host, Key) ->
- case Key#ssh_key.type of
- rsa ->
- {N,E} = Key#ssh_key.public,
- DK = ssh_bits:b64_encode(
- ssh_bits:encode(["ssh-rsa",E,N],
- [string,mpint,mpint])),
- file:write(Fd, [Host, " ssh-rsa ", DK, "\n"]);
- dsa ->
- {P,Q,G,Y} = Key#ssh_key.public,
- DK = ssh_bits:b64_encode(
- ssh_bits:encode(["ssh-dss",P,Q,G,Y],
- [string,mpint,mpint,mpint,mpint])),
- file:write(Fd, [Host, " ssh-dss ", DK, "\n"])
+handle_host(Fd, Host, HostList, Key, KeyType) ->
+ Host1 = host_name(Host),
+ case lists:member(Host1, HostList) and key_match(Key, KeyType) of
+ true ->
+ Key;
+ false ->
+ lookup_host_key_fd(Fd, Host, KeyType)
end.
+host_name(Atom) when is_atom(Atom) ->
+ atom_to_list(Atom);
+host_name(List) ->
+ List.
-%% read_pem(Cs, Type) ->
-%% case read_line(Cs) of
-%% {"-----BEGIN "++Rest,Cs1} ->
-%% case string:tokens(Rest, " ") of
-%% [Type, "PRIVATE", "KEY-----"] ->
-%% read_pem64(Cs1, [], Type);
-%% _ ->
-%% {error, bad_format}
-%% end;
-%% {"",Cs1} when Cs1 =/= "" ->
-%% read_pem(Cs1,Type);
-%% {_,""} ->
-%% {error, bad_format}
-%% end.
-
-%% read_pem64(Cs, Acc, Type) ->
-%% case read_line(Cs) of
-%% {"-----END "++Rest,_Cs1} ->
-%% case string:tokens(Rest, " ") of
-%% [Type, "PRIVATE", "KEY-----"] ->
-%% {ok,ssh_bits:b64_decode(append(reverse(Acc)))};
-%% Toks ->
-%% error_logger:format("ssh: TOKENS=~p\n", [Toks]),
-%% {error, bad_format}
-%% end;
-%% {B64, Cs1} when Cs1 =/= "" ->
-%% read_pem64(Cs1, [B64|Acc], Type);
-%% _What ->
-%% {error, bad_format}
-%% end.
-
-
-%% read_line(Cs) -> read_line(Cs,[]).
-%% read_line([$\r,$\n|T], Acc) -> {reverse(Acc), T};
-%% read_line([$\n|T], Acc) -> {reverse(Acc), T};
-%% read_line([C|T], Acc) -> read_line(T,[C|Acc]);
-%% read_line([], Acc) -> {reverse(Acc),[]}.
-
-lookup_user_key(User, Alg, Opts) ->
- SshDir = ssh_dir({remoteuser,User}, Opts),
- case lookup_user_key_f(User, SshDir, Alg, "authorized_keys", Opts) of
- {ok, Key} ->
- {ok, Key};
- _ ->
- lookup_user_key_f(User, SshDir, Alg, "authorized_keys2", Opts)
- end.
+key_match(#'RSAPublicKey'{}, "ssh-rsa") ->
+ true;
+key_match({_, #'Dss-Parms'{}}, "ssh-dss") ->
+ true;
+key_match(_, _) ->
+ false.
+
+add_key_fd(Fd, Host,Key) ->
+ SshBin = public_key:ssh_encode([{Key, [{hostnames, [Host]}]}], known_hosts),
+ file:write(Fd, SshBin).
-lookup_user_key_f(_User, [], _Alg, _F, _Opts) ->
+lookup_user_key_f(_, _User, [], _Alg, _F, _Opts) ->
{error, nouserdir};
-lookup_user_key_f(_User, nouserdir, _Alg, _F, _Opts) ->
+lookup_user_key_f(_, _User, nouserdir, _Alg, _F, _Opts) ->
{error, nouserdir};
-lookup_user_key_f(_User, Dir, Alg, F, _Opts) ->
+lookup_user_key_f(Key, _User, Dir, _Alg, F, _Opts) ->
FileName = filename:join(Dir, F),
- case file:open(FileName, [read]) of
+ case file:open(FileName, [read, binary]) of
{ok, Fd} ->
- Res = lookup_user_key_fd(Fd, Alg),
+ Res = lookup_user_key_fd(Fd, Key),
file:close(Fd),
Res;
{error, Reason} ->
{error, {{openerr, Reason}, {file, FileName}}}
end.
-lookup_user_key_fd(Fd, Alg) ->
+lookup_user_key_fd(Fd, Key) ->
case io:get_line(Fd, '') of
eof ->
{error, not_found};
Line ->
- case string:tokens(Line, " ") of
- [Alg, KeyData, _] ->
- %% io:format("lookup_user_key_fd: HostList ~p Alg ~p KeyData ~p\n",
- %% [HostList, Alg, KeyData]),
- decode_public_key_v2(ssh_bits:b64_decode(KeyData), Alg);
- _Other ->
- %%?dbg(false, "key_fd Other: ~w ~w\n", [Alg, _Other]),
- lookup_user_key_fd(Fd, Alg)
+ case public_key:ssh_decode(Line, auth_keys) of
+ [{AuthKey, _}] ->
+ case is_auth_key(Key, AuthKey) of
+ true ->
+ {ok, Key};
+ false ->
+ lookup_user_key_fd(Fd, Key)
+ end;
+ [] ->
+ lookup_user_key_fd(Fd, Key)
end
end.
+is_auth_key(Key, Key) ->
+ true;
+is_auth_key(_,_) ->
+ false.
-encode_public_key(#ssh_key{type = rsa, public = {N, E}}) ->
- ssh_bits:encode(["ssh-rsa",E,N],
- [string,mpint,mpint]);
-encode_public_key(#ssh_key{type = dsa, public = {P,Q,G,Y}}) ->
- ssh_bits:encode(["ssh-dss",P,Q,G,Y],
- [string,mpint,mpint,mpint,mpint]).
-
-%%
-%% Utils
-%%
-
-%% server use this to find individual keys for
-%% an individual user when user tries to login
-%% with publickey
-ssh_dir({remoteuser, User}, Opts) ->
- case proplists:get_value(user_dir_fun, Opts) of
- undefined ->
- case proplists:get_value(user_dir, Opts) of
- undefined ->
- default_user_dir();
- Dir ->
- Dir
- end;
- FUN ->
- FUN(User)
- end;
-
-%% client use this to find client ssh keys
-ssh_dir(user, Opts) ->
- case proplists:get_value(user_dir, Opts, false) of
- false -> default_user_dir();
- D -> D
- end;
-
-%% server use this to find server host keys
-ssh_dir(system, Opts) ->
- proplists:get_value(system_dir, Opts, "/etc/ssh").
-
-file_name(Type, Name, Opts) ->
- FN = filename:join(ssh_dir(Type, Opts), Name),
- %%?dbg(?DBG_PATHS, "file_name: ~p\n", [FN]),
- FN.
default_user_dir()->
{ok,[[Home|_]]} = init:get_argument(home),