wbclient: "ev" is no longer used in wbc_sids_to_xids
[metze/samba/wip.git] / source4 / auth / unix_token.c
1 /*
2    Unix SMB/CIFS implementation.
3
4    Deal with unix elements in the security token
5
6    Copyright (C) Andrew Tridgell 2004
7    Copyright (C) Andrew Bartlett 2011
8
9    This program is free software; you can redistribute it and/or modify
10    it under the terms of the GNU General Public License as published by
11    the Free Software Foundation; either version 3 of the License, or
12    (at your option) any later version.
13
14    This program is distributed in the hope that it will be useful,
15    but WITHOUT ANY WARRANTY; without even the implied warranty of
16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17    GNU General Public License for more details.
18
19    You should have received a copy of the GNU General Public License
20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
21 */
22
23 #include "includes.h"
24 #include "auth/auth.h"
25 #include "libcli/wbclient/wbclient.h"
26 #include "param/param.h"
27
28 /*
29   form a security_unix_token from the current security_token
30 */
31 NTSTATUS security_token_to_unix_token(TALLOC_CTX *mem_ctx,
32                                       struct tevent_context *ev,
33                                       struct security_token *token,
34                                       struct security_unix_token **sec)
35 {
36         uint32_t s, g;
37         NTSTATUS status;
38         struct id_map *ids;
39
40         /* we can't do unix security without a user and group */
41         if (token->num_sids < 2) {
42                 return NT_STATUS_ACCESS_DENIED;
43         }
44
45         *sec = talloc_zero(mem_ctx, struct security_unix_token);
46         if (*sec == NULL) {
47                 return NT_STATUS_NO_MEMORY;
48         }
49
50         ids = talloc_zero_array(mem_ctx, struct id_map, token->num_sids);
51         NT_STATUS_HAVE_NO_MEMORY(ids);
52
53         for (s=0; s < token->num_sids; s++) {
54                 ids[s].sid = &token->sids[s];
55                 ids[s].status = ID_UNKNOWN;
56         }
57
58         status = wbc_sids_to_xids(ids, token->num_sids);
59         NT_STATUS_NOT_OK_RETURN(status);
60
61         g = token->num_sids;
62         if (ids[0].xid.type != ID_TYPE_BOTH) {
63                 g--;
64         }
65         (*sec)->ngroups = g;
66         (*sec)->groups = talloc_array(*sec, gid_t, (*sec)->ngroups);
67         NT_STATUS_HAVE_NO_MEMORY((*sec)->groups);
68
69         g=0;
70         if (ids[0].xid.type == ID_TYPE_BOTH) {
71                 (*sec)->uid = ids[0].xid.id;
72                 (*sec)->groups[g] = ids[0].xid.id;
73                 g++;
74         } else if (ids[0].xid.type == ID_TYPE_UID) {
75                 (*sec)->uid = ids[0].xid.id;
76         } else {
77                 char *sid_str = dom_sid_string(mem_ctx, ids[0].sid);
78                 DEBUG(0, ("Unable to convert first SID (%s) in user token to a UID.  Conversion was returned as type %d, full token:\n",
79                           sid_str, (int)ids[0].xid.type));
80                 security_token_debug(0, 0, token);
81                 talloc_free(sid_str);
82                 return NT_STATUS_INVALID_SID;
83         }
84
85         if (ids[1].xid.type == ID_TYPE_BOTH ||
86             ids[1].xid.type == ID_TYPE_GID) {
87                 (*sec)->gid = ids[1].xid.id;
88                 (*sec)->groups[g] = ids[1].xid.id;
89                 g++;
90         } else {
91                 char *sid_str = dom_sid_string(mem_ctx, ids[1].sid);
92                 DEBUG(0, ("Unable to convert second SID (%s) in user token to a GID.  Conversion was returned as type %d, full token:\n",
93                           sid_str, (int)ids[1].xid.type));
94                 security_token_debug(0, 0, token);
95                 talloc_free(sid_str);
96                 return NT_STATUS_INVALID_SID;
97         }
98
99         for (s=2; s < token->num_sids; s++) {
100                 if (ids[s].xid.type == ID_TYPE_BOTH ||
101                     ids[s].xid.type == ID_TYPE_GID) {
102                         (*sec)->groups[g] = ids[s].xid.id;
103                         g++;
104                 } else {
105                         char *sid_str = dom_sid_string(mem_ctx, ids[s].sid);
106                         DEBUG(0, ("Unable to convert SID (%s) at index %u in user token to a GID.  Conversion was returned as type %d, full token:\n",
107                                   sid_str, (unsigned int)s, (int)ids[s].xid.type));
108                         security_token_debug(0, 0, token);
109                         talloc_free(sid_str);
110                         return NT_STATUS_INVALID_SID;
111                 }
112         }
113
114         DEBUG(5, ("Successfully converted security token to a unix token:"));
115         security_token_debug(0, 5, token);
116         TALLOC_FREE(ids);
117
118         return NT_STATUS_OK;
119 }
120
121 /*
122   Fill in the auth_user_info_unix and auth_unix_token elements in a struct session_info
123 */
124 NTSTATUS auth_session_info_fill_unix(struct tevent_context *ev,
125                                      struct loadparm_context *lp_ctx,
126                                      const char *original_user_name,
127                                      struct auth_session_info *session_info)
128 {
129         char *su;
130         size_t len;
131         NTSTATUS status = security_token_to_unix_token(session_info, ev,
132                                                        session_info->security_token,
133                                                        &session_info->unix_token);
134         if (!NT_STATUS_IS_OK(status)) {
135                 return status;
136         }
137
138         session_info->unix_info = talloc_zero(session_info, struct auth_user_info_unix);
139         NT_STATUS_HAVE_NO_MEMORY(session_info->unix_info);
140
141         session_info->unix_info->unix_name = talloc_asprintf(session_info->unix_info,
142                                                              "%s%s%s", session_info->info->domain_name,
143                                                              lpcfg_winbind_separator(lp_ctx),
144                                                              session_info->info->account_name);
145         NT_STATUS_HAVE_NO_MEMORY(session_info->unix_info->unix_name);
146
147         len = strlen(original_user_name) + 1;
148         session_info->unix_info->sanitized_username = su = talloc_array(session_info->unix_info, char, len);
149         NT_STATUS_HAVE_NO_MEMORY(su);
150
151         alpha_strcpy(su, original_user_name,
152                      ". _-$", len);
153
154         return NT_STATUS_OK;
155 }