quota: add supprt for gfs2
[samba.git] / nsswitch / libwbclient / wbclient.c
1 /*
2    Unix SMB/CIFS implementation.
3
4    Winbind client API
5
6    Copyright (C) Gerald (Jerry) Carter 2007
7
8
9    This library is free software; you can redistribute it and/or
10    modify it under the terms of the GNU Lesser General Public
11    License as published by the Free Software Foundation; either
12    version 3 of the License, or (at your option) any later version.
13
14    This library 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 GNU
17    Library General Public License for more details.
18
19    You should have received a copy of the GNU Lesser General Public License
20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
21 */
22
23 /* Required Headers */
24
25 #include "replace.h"
26 #include "talloc.h"
27 #include "tevent.h"
28 #include "libwbclient.h"
29
30 /* From wb_common.c */
31
32 NSS_STATUS winbindd_request_response(int req_type,
33                                      struct winbindd_request *request,
34                                      struct winbindd_response *response);
35 NSS_STATUS winbindd_priv_request_response(int req_type,
36                                           struct winbindd_request *request,
37                                           struct winbindd_response *response);
38
39 /** @brief Wrapper around Winbind's send/receive API call
40  *
41  * @param cmd       Winbind command operation to perform
42  * @param request   Send structure
43  * @param response  Receive structure
44  *
45  * @return #wbcErr
46  **/
47
48 /**********************************************************************
49  result == NSS_STATUS_UNAVAIL: winbind not around
50  result == NSS_STATUS_NOTFOUND: winbind around, but domain missing
51
52  Due to a bad API NSS_STATUS_NOTFOUND is returned both when winbind_off
53  and when winbind return WINBINDD_ERROR. So the semantics of this
54  routine depends on winbind_on. Grepping for winbind_off I just
55  found 3 places where winbind is turned off, and this does not conflict
56  (as far as I have seen) with the callers of is_trusted_domains.
57
58  --Volker
59 **********************************************************************/
60
61 static wbcErr wbcRequestResponseInt(
62         int cmd,
63         struct winbindd_request *request,
64         struct winbindd_response *response,
65         NSS_STATUS (*fn)(int req_type,
66                          struct winbindd_request *request,
67                          struct winbindd_response *response))
68 {
69         wbcErr wbc_status = WBC_ERR_UNKNOWN_FAILURE;
70         NSS_STATUS nss_status;
71
72         /* for some calls the request and/or response can be NULL */
73
74         nss_status = fn(cmd, request, response);
75
76         switch (nss_status) {
77         case NSS_STATUS_SUCCESS:
78                 wbc_status = WBC_ERR_SUCCESS;
79                 break;
80         case NSS_STATUS_UNAVAIL:
81                 wbc_status = WBC_ERR_WINBIND_NOT_AVAILABLE;
82                 break;
83         case NSS_STATUS_NOTFOUND:
84                 wbc_status = WBC_ERR_DOMAIN_NOT_FOUND;
85                 break;
86         default:
87                 wbc_status = WBC_ERR_NSS_ERROR;
88                 break;
89         }
90
91         return wbc_status;
92 }
93
94 wbcErr wbcRequestResponse(int cmd,
95                           struct winbindd_request *request,
96                           struct winbindd_response *response)
97 {
98         return wbcRequestResponseInt(cmd, request, response,
99                                      winbindd_request_response);
100 }
101
102 wbcErr wbcRequestResponsePriv(int cmd,
103                               struct winbindd_request *request,
104                               struct winbindd_response *response)
105 {
106         return wbcRequestResponseInt(cmd, request, response,
107                                      winbindd_priv_request_response);
108 }
109
110 /** @brief Translate an error value into a string
111  *
112  * @param error
113  *
114  * @return a pointer to a static string
115  **/
116 const char *wbcErrorString(wbcErr error)
117 {
118         switch (error) {
119         case WBC_ERR_SUCCESS:
120                 return "WBC_ERR_SUCCESS";
121         case WBC_ERR_NOT_IMPLEMENTED:
122                 return "WBC_ERR_NOT_IMPLEMENTED";
123         case WBC_ERR_UNKNOWN_FAILURE:
124                 return "WBC_ERR_UNKNOWN_FAILURE";
125         case WBC_ERR_NO_MEMORY:
126                 return "WBC_ERR_NO_MEMORY";
127         case WBC_ERR_INVALID_SID:
128                 return "WBC_ERR_INVALID_SID";
129         case WBC_ERR_INVALID_PARAM:
130                 return "WBC_ERR_INVALID_PARAM";
131         case WBC_ERR_WINBIND_NOT_AVAILABLE:
132                 return "WBC_ERR_WINBIND_NOT_AVAILABLE";
133         case WBC_ERR_DOMAIN_NOT_FOUND:
134                 return "WBC_ERR_DOMAIN_NOT_FOUND";
135         case WBC_ERR_INVALID_RESPONSE:
136                 return "WBC_ERR_INVALID_RESPONSE";
137         case WBC_ERR_NSS_ERROR:
138                 return "WBC_ERR_NSS_ERROR";
139         case WBC_ERR_UNKNOWN_USER:
140                 return "WBC_ERR_UNKNOWN_USER";
141         case WBC_ERR_UNKNOWN_GROUP:
142                 return "WBC_ERR_UNKNOWN_GROUP";
143         case WBC_ERR_AUTH_ERROR:
144                 return "WBC_ERR_AUTH_ERROR";
145         case WBC_ERR_PWD_CHANGE_FAILED:
146                 return "WBC_ERR_PWD_CHANGE_FAILED";
147         }
148
149         return "unknown wbcErr value";
150 }
151
152 /* Free library allocated memory */
153 void wbcFreeMemory(void *p)
154 {
155         if (p)
156                 talloc_free(p);
157
158         return;
159 }
160
161 wbcErr wbcLibraryDetails(struct wbcLibraryDetails **_details)
162 {
163         wbcErr wbc_status = WBC_ERR_UNKNOWN_FAILURE;
164         struct wbcLibraryDetails *info;
165
166         info = talloc(NULL, struct wbcLibraryDetails);
167         BAIL_ON_PTR_ERROR(info, wbc_status);
168
169         info->major_version = WBCLIENT_MAJOR_VERSION;
170         info->minor_version = WBCLIENT_MINOR_VERSION;
171         info->vendor_version = talloc_strdup(info,
172                                              WBCLIENT_VENDOR_VERSION);
173         BAIL_ON_PTR_ERROR(info->vendor_version, wbc_status);
174
175         *_details = info;
176         info = NULL;
177
178         wbc_status = WBC_ERR_SUCCESS;
179
180 done:
181         talloc_free(info);
182         return wbc_status;
183 }