idmap_ldap.8: Rework example to use new idmap syntax
[samba.git] / libgpo / gpo_fetch.c
1 /*
2  *  Unix SMB/CIFS implementation.
3  *  Group Policy Object Support
4  *  Copyright (C) Guenther Deschner 2005-2006
5  *
6  *  This program is free software; you can redistribute it and/or modify
7  *  it under the terms of the GNU General Public License as published by
8  *  the Free Software Foundation; either version 3 of the License, or
9  *  (at your option) any later version.
10  *
11  *  This program is distributed in the hope that it will be useful,
12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  *  GNU General Public License for more details.
15  *
16  *  You should have received a copy of the GNU General Public License
17  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
18  */
19
20 #include "includes.h"
21 #include "system/filesys.h"
22 #include "../libgpo/gpo.h"
23 #include "../libgpo/gpo_ini.h"
24
25 #if _SAMBA_BUILD_ == 4
26 #include "param/param.h"
27 #include "libcli/resolve/resolve.h"
28 #include <tevent.h>
29 #include "libcli/libcli.h"
30 #include "libcli/raw/libcliraw.h"
31 #include "libcli/libcli_proto.h"
32 #include "libgpo/ads_convenience.h"
33 #include "libgpo/gpo_s4.h"
34 #include "lib/util/util.h"
35 #else
36 #include "libgpo/gpo_proto.h"
37 #include "libsmb/libsmb.h"
38 #endif
39
40 /****************************************************************
41  explode the GPO CIFS URI into their components
42 ****************************************************************/
43
44 NTSTATUS gpo_explode_filesyspath(TALLOC_CTX *mem_ctx,
45                                  const char *cache_dir,
46                                  const char *file_sys_path,
47                                  char **server,
48                                  char **service,
49                                  char **nt_path,
50                                  char **unix_path)
51 {
52         char *path = NULL;
53
54         *server = NULL;
55         *service = NULL;
56         *nt_path = NULL;
57         *unix_path = NULL;
58
59         if (!file_sys_path) {
60                 return NT_STATUS_OK;
61         }
62
63         if (!next_token_talloc(mem_ctx, &file_sys_path, server, "\\")) {
64                 return NT_STATUS_INVALID_PARAMETER;
65         }
66         NT_STATUS_HAVE_NO_MEMORY(*server);
67
68         if (!next_token_talloc(mem_ctx, &file_sys_path, service, "\\")) {
69                 return NT_STATUS_INVALID_PARAMETER;
70         }
71         NT_STATUS_HAVE_NO_MEMORY(*service);
72
73         if ((*nt_path = talloc_asprintf(mem_ctx, "\\%s", file_sys_path))
74                 == NULL) {
75                 return NT_STATUS_NO_MEMORY;
76         }
77         NT_STATUS_HAVE_NO_MEMORY(*nt_path);
78
79         if ((path = talloc_asprintf(mem_ctx,
80                                         "%s/%s",
81                                         cache_dir,
82                                         file_sys_path)) == NULL) {
83                 return NT_STATUS_NO_MEMORY;
84         }
85 #if _SAMBA_BUILD_ == 4
86         path = string_sub_talloc(mem_ctx, path, "\\", "/");
87 #else
88         path = talloc_string_sub(mem_ctx, path, "\\", "/");
89 #endif
90         if (!path) {
91                 return NT_STATUS_NO_MEMORY;
92         }
93
94         *unix_path = talloc_strdup(mem_ctx, path);
95         NT_STATUS_HAVE_NO_MEMORY(*unix_path);
96
97         talloc_free(path);
98         return NT_STATUS_OK;
99 }
100
101 /****************************************************************
102  prepare the local disc storage for "unix_path"
103 ****************************************************************/
104
105 static NTSTATUS gpo_prepare_local_store(TALLOC_CTX *mem_ctx,
106                                         const char *cache_dir,
107                                         const char *unix_path)
108 {
109         char *current_dir;
110         char *tok;
111
112         current_dir = talloc_strdup(mem_ctx, cache_dir);
113         NT_STATUS_HAVE_NO_MEMORY(current_dir);
114
115         if ((mkdir(cache_dir, 0644)) < 0 && errno != EEXIST) {
116                 return NT_STATUS_ACCESS_DENIED;
117         }
118
119         while (next_token_talloc(mem_ctx, &unix_path, &tok, "/")) {
120                 if (strequal(tok, GPO_CACHE_DIR)) {
121                         break;
122                 }
123         }
124
125         while (next_token_talloc(mem_ctx, &unix_path, &tok, "/")) {
126                 current_dir = talloc_asprintf_append_buffer(current_dir, "/%s", tok);
127                 NT_STATUS_HAVE_NO_MEMORY(current_dir);
128
129                 if ((mkdir(current_dir, 0644)) < 0 && errno != EEXIST) {
130                         return NT_STATUS_ACCESS_DENIED;
131                 }
132         }
133
134         return NT_STATUS_OK;
135 }
136
137 static NTSTATUS gpo_connect_server(ADS_STRUCT *ads, struct loadparm_context *lp_ctx,
138                                    const char *server, const char *service, void *ret_cli)
139 {
140         NTSTATUS result;
141 #if _SAMBA_BUILD_ == 3
142         struct cli_state *cli;
143
144
145         result = cli_full_connection(&cli,
146                         global_myname(),
147                         server,
148                         NULL, 0,
149                         service, "A:",
150                         ads->auth.user_name, NULL,
151                         ads->auth.password,
152                         CLI_FULL_CONNECTION_USE_KERBEROS |
153                         CLI_FULL_CONNECTION_FALLBACK_AFTER_KERBEROS,
154                         Undefined);
155         if (!NT_STATUS_IS_OK(result)) {
156                 DEBUG(10,("check_refresh_gpo: "
157                                 "failed to connect: %s\n",
158                                 nt_errstr(result)));
159                 return result;
160         }
161         *(struct cli_state **) ret_cli = cli;
162 #else
163         struct smbcli_state *cli = NULL;
164         struct smbcli_options options;
165         struct smbcli_session_options session_options;
166
167         lp_smbcli_options(lp_ctx, &options);
168         lp_smbcli_session_options(lp_ctx, &session_options);
169
170         result = smbcli_full_connection(NULL, &cli,
171                         server,
172                         NULL, service,
173                         NULL /*devtype*/, NULL /* socket options */,
174                         ads->credentials,
175                         lp_resolve_context(lp_ctx),
176                         tevent_context_init(ads),
177                         &options,
178                         &session_options,
179                         lp_iconv_handle(lp_ctx),
180                         lp_gensec_settings(ads, lp_ctx));
181         if (!NT_STATUS_IS_OK(result)) {
182                 DEBUG(10,("failed to connect: %s\n",
183                                 nt_errstr(result)));
184                 return result;
185         }
186         *(struct smbcli_state **) ret_cli = cli;
187 #endif
188         return NT_STATUS_OK;
189 }
190
191 /****************************************************************
192  download a full GPO via CIFS
193 ****************************************************************/
194
195 NTSTATUS gpo_fetch_files(TALLOC_CTX *mem_ctx,
196                          ADS_STRUCT *ads,
197                          struct loadparm_context *lp_ctx,
198                          const char *cache_dir,
199                          struct GROUP_POLICY_OBJECT *gpo)
200 {
201         NTSTATUS result;
202         char *server, *service, *nt_path, *unix_path;
203         char *nt_ini_path, *unix_ini_path;
204 #if _SAMBA_BUILD_ == 3
205         struct cli_state *cli;
206 #else
207         struct smbcli_state *cli;
208 #endif
209
210
211         result = gpo_explode_filesyspath(mem_ctx, cache_dir, gpo->file_sys_path,
212                                          &server, &service, &nt_path,
213                                          &unix_path);
214         NT_STATUS_NOT_OK_RETURN(result);
215
216
217         result = gpo_connect_server(ads, lp_ctx, server, service, &cli);
218         NT_STATUS_NOT_OK_RETURN(result);
219
220
221         result = gpo_prepare_local_store(mem_ctx, cache_dir, unix_path);
222         NT_STATUS_NOT_OK_RETURN(result);
223
224         unix_ini_path = talloc_asprintf(mem_ctx, "%s/%s", unix_path, GPT_INI);
225         nt_ini_path = talloc_asprintf(mem_ctx, "%s\\%s", nt_path, GPT_INI);
226         NT_STATUS_HAVE_NO_MEMORY(unix_ini_path);
227         NT_STATUS_HAVE_NO_MEMORY(nt_ini_path);
228
229         result = gpo_copy_file(mem_ctx, cli, nt_ini_path, unix_ini_path);
230         NT_STATUS_NOT_OK_RETURN(result);
231
232         result = gpo_sync_directories(mem_ctx, cli, nt_path, unix_path);
233         NT_STATUS_NOT_OK_RETURN(result);
234
235         return NT_STATUS_OK;
236 }
237
238 /****************************************************************
239  get the locally stored gpt.ini version number
240 ****************************************************************/
241
242 NTSTATUS gpo_get_sysvol_gpt_version(TALLOC_CTX *mem_ctx,
243                                     const char *unix_path,
244                                     uint32_t *sysvol_version,
245                                     char **display_name)
246 {
247         NTSTATUS status;
248         uint32_t version = 0;
249         char *local_path = NULL;
250         char *name = NULL;
251
252         if (!unix_path) {
253                 return NT_STATUS_OK;
254         }
255
256         local_path = talloc_asprintf(mem_ctx, "%s/%s", unix_path, GPT_INI);
257         NT_STATUS_HAVE_NO_MEMORY(local_path);
258
259         status = parse_gpt_ini(mem_ctx, local_path, &version, &name);
260         if (!NT_STATUS_IS_OK(status)) {
261                 DEBUG(10,("gpo_get_sysvol_gpt_version: "
262                         "failed to parse ini [%s]: %s\n",
263                         local_path, nt_errstr(status)));
264                 return status;
265         }
266
267         if (sysvol_version) {
268                 *sysvol_version = version;
269         }
270
271         if (name && *display_name) {
272                 *display_name = talloc_strdup(mem_ctx, name);
273                 NT_STATUS_HAVE_NO_MEMORY(*display_name);
274         }
275
276         return NT_STATUS_OK;
277 }