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-rw-r--r--lib/ssh/src/ssh_sftpd.erl31
-rw-r--r--lib/ssh/test/ssh_sftpd_SUITE.erl39
2 files changed, 56 insertions, 14 deletions
diff --git a/lib/ssh/src/ssh_sftpd.erl b/lib/ssh/src/ssh_sftpd.erl
index b739955836..bc30b7fb7d 100644
--- a/lib/ssh/src/ssh_sftpd.erl
+++ b/lib/ssh/src/ssh_sftpd.erl
@@ -742,6 +742,10 @@ resolve_symlinks_2([], State, _LinkCnt, AccPath) ->
{{ok, AccPath}, State}.
+%% The File argument is always in a user visible file system, i.e.
+%% is under Root and is relative to CWD or Root, if starts with "/".
+%% The result of the function is always an absolute path in a
+%% "backend" file system.
relate_file_name(File, State) ->
relate_file_name(File, State, _Canonicalize=true).
@@ -749,19 +753,20 @@ relate_file_name(File, State, Canonicalize) when is_binary(File) ->
relate_file_name(unicode:characters_to_list(File), State, Canonicalize);
relate_file_name(File, #state{cwd = CWD, root = ""}, Canonicalize) ->
relate_filename_to_path(File, CWD, Canonicalize);
-relate_file_name(File, #state{root = Root}, Canonicalize) ->
- case is_within_root(Root, File) of
- true ->
- File;
- false ->
- RelFile = make_relative_filename(File),
- NewFile = relate_filename_to_path(RelFile, Root, Canonicalize),
- case is_within_root(Root, NewFile) of
- true ->
- NewFile;
- false ->
- Root
- end
+relate_file_name(File, #state{cwd = CWD, root = Root}, Canonicalize) ->
+ CWD1 = case is_within_root(Root, CWD) of
+ true -> CWD;
+ false -> Root
+ end,
+ AbsFile = case make_relative_filename(File) of
+ File ->
+ relate_filename_to_path(File, CWD1, Canonicalize);
+ RelFile ->
+ relate_filename_to_path(RelFile, Root, Canonicalize)
+ end,
+ case is_within_root(Root, AbsFile) of
+ true -> AbsFile;
+ false -> Root
end.
is_within_root(Root, File) ->
diff --git a/lib/ssh/test/ssh_sftpd_SUITE.erl b/lib/ssh/test/ssh_sftpd_SUITE.erl
index 52a26110c4..a248c5e1e6 100644
--- a/lib/ssh/test/ssh_sftpd_SUITE.erl
+++ b/lib/ssh/test/ssh_sftpd_SUITE.erl
@@ -65,7 +65,8 @@ all() ->
ver3_open_flags,
relpath,
sshd_read_file,
- ver6_basic].
+ ver6_basic,
+ root_with_cwd].
groups() ->
[].
@@ -117,6 +118,11 @@ init_per_testcase(TestCase, Config) ->
ver6_basic ->
SubSystems = [ssh_sftpd:subsystem_spec([{sftpd_vsn, 6}])],
ssh:daemon(0, [{subsystems, SubSystems}|Options]);
+ root_with_cwd ->
+ RootDir = filename:join(PrivDir, root_with_cwd),
+ CWD = filename:join(RootDir, home),
+ SubSystems = [ssh_sftpd:subsystem_spec([{root, RootDir}, {cwd, CWD}])],
+ ssh:daemon(0, [{subsystems, SubSystems}|Options]);
_ ->
SubSystems = [ssh_sftpd:subsystem_spec([])],
ssh:daemon(0, [{subsystems, SubSystems}|Options])
@@ -646,6 +652,37 @@ ver6_basic(Config) when is_list(Config) ->
open_file(PrivDir, Cm, Channel, ReqId,
?ACE4_READ_DATA bor ?ACE4_READ_ATTRIBUTES,
?SSH_FXF_OPEN_EXISTING).
+
+%%--------------------------------------------------------------------
+root_with_cwd() ->
+ [{doc, "Check if files are found, if the CWD and Root are specified"}].
+root_with_cwd(Config) when is_list(Config) ->
+ PrivDir = proplists:get_value(priv_dir, Config),
+ RootDir = filename:join(PrivDir, root_with_cwd),
+ CWD = filename:join(RootDir, home),
+ FileName = "root_with_cwd.txt",
+ FilePath = filename:join(CWD, FileName),
+ ok = filelib:ensure_dir(FilePath),
+ ok = file:write_file(FilePath ++ "0", <<>>),
+ ok = file:write_file(FilePath ++ "1", <<>>),
+ ok = file:write_file(FilePath ++ "2", <<>>),
+ {Cm, Channel} = proplists:get_value(sftp, Config),
+ ReqId0 = 0,
+ {ok, <<?SSH_FXP_HANDLE, ?UINT32(ReqId0), _Handle0/binary>>, _} =
+ open_file(FileName ++ "0", Cm, Channel, ReqId0,
+ ?ACE4_READ_DATA bor ?ACE4_READ_ATTRIBUTES,
+ ?SSH_FXF_OPEN_EXISTING),
+ ReqId1 = 1,
+ {ok, <<?SSH_FXP_HANDLE, ?UINT32(ReqId1), _Handle1/binary>>, _} =
+ open_file("./" ++ FileName ++ "1", Cm, Channel, ReqId1,
+ ?ACE4_READ_DATA bor ?ACE4_READ_ATTRIBUTES,
+ ?SSH_FXF_OPEN_EXISTING),
+ ReqId2 = 2,
+ {ok, <<?SSH_FXP_HANDLE, ?UINT32(ReqId2), _Handle2/binary>>, _} =
+ open_file("/home/" ++ FileName ++ "2", Cm, Channel, ReqId2,
+ ?ACE4_READ_DATA bor ?ACE4_READ_ATTRIBUTES,
+ ?SSH_FXF_OPEN_EXISTING).
+
%%--------------------------------------------------------------------
%% Internal functions ------------------------------------------------
%%--------------------------------------------------------------------