aboutsummaryrefslogtreecommitdiffstats
path: root/lib/inets/src/http_server/mod_auth_dets.erl
blob: 95a2cdd66912b3b2fe4611549b2c26be4cb8db5e (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
%%
%% %CopyrightBegin%
%% 
%% Copyright Ericsson AB 1998-2010. All Rights Reserved.
%% 
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%%     http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%% 
%% %CopyrightEnd%
%%
%%
-module(mod_auth_dets).

%% dets authentication storage

-export([get_user/2,
	 list_group_members/2,
	 add_user/2,
	 add_group_member/3,
	 list_users/1,
	 delete_user/2,
	 list_groups/1,
	 delete_group_member/3,
	 delete_group/2,
	 remove/1]).

-export([store_directory_data/3]).

-include("httpd.hrl").
-include("httpd_internal.hrl").
-include("mod_auth.hrl").

%%====================================================================
%% Internal application API
%%====================================================================	     

store_directory_data(_Directory, DirData, Server_root) ->
    {PWFile, Absolute_pwdfile} = absolute_file_name(auth_user_file, DirData,
						    Server_root),
    {GroupFile, Absolute_groupfile} = absolute_file_name(auth_group_file,
							 DirData, Server_root),
    Addr = proplists:get_value(bind_address, DirData),
    Port = proplists:get_value(port, DirData),
    Profile = proplists:get_value(profile, DirData, ?DEFAULT_PROFILE),

    PWName  = httpd_util:make_name("httpd_dets_pwdb", Addr, Port, Profile),
    case dets:open_file(PWName,[{type,set},{file,Absolute_pwdfile},{repair,true}]) of
	{ok, PWDB} ->
	    GDBName = httpd_util:make_name("httpd_dets_groupdb", Addr, Port, Profile),
	    case dets:open_file(GDBName,[{type,set},{file,Absolute_groupfile},{repair,true}]) of
		{ok, GDB} ->
		    NDD1 = lists:keyreplace(auth_user_file, 1, DirData, 
					    {auth_user_file, PWDB}),
		    NDD2 = lists:keyreplace(auth_group_file, 1, NDD1, 
					    {auth_group_file, GDB}),
		    {ok, NDD2};
		{error, Err}->
		    {error, {{file, GroupFile},Err}}
	    end;
	{error, Err2} ->
	    {error, {{file, PWFile},Err2}} 
    end.

%% Storage format of users in the dets table:
%% {{UserName, Addr, Port, Dir}, Password, UserData}
add_user(DirData, UStruct) ->
    {Addr, Port, Dir} = lookup_common(DirData),
    PWDB = proplists:get_value(auth_user_file, DirData),
    Record = {{UStruct#httpd_user.username, Addr, Port, Dir},
	      UStruct#httpd_user.password, UStruct#httpd_user.user_data}, 
    case dets:lookup(PWDB, UStruct#httpd_user.username) of
	[Record] ->
	    {error, user_already_in_db};
	_ ->
	    dets:insert(PWDB, Record),
	    true
    end.

get_user(DirData, UserName) ->
    {Addr, Port, Dir} = lookup_common(DirData),
    PWDB = proplists:get_value(auth_user_file, DirData),
    User = {UserName, Addr, Port, Dir},
    case dets:lookup(PWDB, User) of
	[{User, Password, UserData}] ->
	    {ok, #httpd_user{username=UserName, password=Password, user_data=UserData}};
	_ ->
	    {error, no_such_user}
    end.

list_users(DirData) ->
    {Addr, Port, Dir} = lookup_common(DirData),
    PWDB = proplists:get_value(auth_user_file, DirData),
    case dets:traverse(PWDB, fun(X) -> {continue, X} end) of    
	Records when is_list(Records) ->
	    {ok, [UserName || {{UserName, AnyAddr, AnyPort, AnyDir}, 
			       _Password, _Data} <- Records,
			      AnyAddr == Addr, AnyPort == Port, 
			      AnyDir == Dir]};
	_O ->
	    {ok, []}
    end.

delete_user(DirData, UserName) ->
    {Addr, Port, Dir} = lookup_common(DirData),
    PWDB = proplists:get_value(auth_user_file, DirData),
    User = {UserName, Addr, Port, Dir},
    case dets:lookup(PWDB, User) of
	[{User, _SomePassword, _UserData}] ->
	    dets:delete(PWDB, User),
	    {ok, Groups} = list_groups(DirData),
	    lists:foreach(fun(Group) -> 
				  delete_group_member(DirData, 
						      Group, UserName) end, 
			  Groups),
	    true;
	_ ->
	    {error, no_such_user}
    end.

%% Storage of groups in the dets table:
%% {Group, UserList} where UserList is a list of strings.
add_group_member(DirData, GroupName, UserName) ->
    {Addr, Port, Dir} = lookup_common(DirData),
    GDB = proplists:get_value(auth_group_file, DirData),
    Group = {GroupName, Addr, Port, Dir},
    case dets:lookup(GDB, Group) of
	[{Group, Users}] ->
	    case lists:member(UserName, Users) of
		true ->
		    true;
		false ->
		    dets:insert(GDB, {Group, [UserName|Users]}),
		    true
	    end;
	[] ->
	    dets:insert(GDB, {Group, [UserName]}),
	    true;
	Other ->
	    {error, Other}
    end.

list_group_members(DirData, GroupName) ->
    {Addr, Port, Dir} = lookup_common(DirData),
    GDB = proplists:get_value(auth_group_file, DirData),
    Group = {GroupName, Addr, Port, Dir},
    case dets:lookup(GDB, Group) of
	[{Group, Users}] ->
	    {ok, Users};
	_ ->
	    {error, no_such_group}
    end.

list_groups(DirData) ->
    {Addr, Port, Dir} = lookup_common(DirData),
    GDB  = proplists:get_value(auth_group_file, DirData),
    case dets:match(GDB, {'$1', '_'}) of
	[] ->
	    {ok, []};
	List when is_list(List) ->
	    Groups = lists:flatten(List),
	    {ok, [GroupName || 
		     {GroupName, AnyAddr, AnyPort, AnyDir} <- Groups,
		     AnyAddr == Addr, AnyPort == Port, AnyDir == Dir]};
	_ ->
	    {ok, []}
    end.

delete_group_member(DirData, GroupName, UserName) ->
    {Addr, Port, Dir} = lookup_common(DirData),
    GDB = proplists:get_value(auth_group_file, DirData),
    Group = {GroupName, Addr, Port, Dir},
    case dets:lookup(GDB, GroupName) of
	[{Group, Users}] ->
	    case lists:member(UserName, Users) of
		true ->
		    dets:delete(GDB, Group),
		    dets:insert(GDB, {Group,
				      lists:delete(UserName, Users)}),
		    true;
		false ->
		    {error, no_such_group_member}
	    end;
	_ ->
	    {error, no_such_group}
    end.

delete_group(DirData, GroupName) ->
    {Addr, Port, Dir} = lookup_common(DirData),
    GDB = proplists:get_value(auth_group_file, DirData),
    Group = {GroupName, Addr, Port, Dir},
    case dets:lookup(GDB, Group) of
	[{Group, _Users}] ->
	    dets:delete(GDB, Group),
	    true;
	_ ->
	    {error, no_such_group}
    end.

%% Closes dets tables used by this auth mod.
remove(DirData) ->
    PWDB = proplists:get_value(auth_user_file, DirData),
    GDB = proplists:get_value(auth_group_file, DirData),
    dets:close(GDB),
    dets:close(PWDB),
    ok.

%%--------------------------------------------------------------------
%%% Internal functions
%%--------------------------------------------------------------------
%% Return the absolute path name of File_type. 
absolute_file_name(File_type, DirData, Server_root) ->
    Path = proplists:get_value(File_type, DirData),
    Absolute_path = case filename:pathtype(Path) of
			relative ->
			    case Server_root of
				undefined ->
				    {error,
				     ?NICE(Path++
					   " is an invalid file name because "
					   "ServerRoot is not defined")};
				_ ->
				    filename:join(Server_root,Path)
			    end;
			_ ->
			    Path
		    end,
    {Path, Absolute_path}.

lookup_common(DirData) ->
    Dir  = proplists:get_value(path, DirData),
    Port = proplists:get_value(port, DirData),
    Addr = proplists:get_value(bind_address, DirData),
    {Addr, Port, Dir}.