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 "../lib/tevent/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#endif
36
37/****************************************************************
38 explode the GPO CIFS URI into their components
39****************************************************************/
40
41NTSTATUS gpo_explode_filesyspath(TALLOC_CTX *mem_ctx,
42                                 const char *cache_dir,
43				 const char *file_sys_path,
44				 char **server,
45				 char **service,
46				 char **nt_path,
47				 char **unix_path)
48{
49	char *path = NULL;
50
51	*server = NULL;
52	*service = NULL;
53	*nt_path = NULL;
54	*unix_path = NULL;
55
56	if (!file_sys_path) {
57		return NT_STATUS_OK;
58	}
59
60	if (!next_token_talloc(mem_ctx, &file_sys_path, server, "\\")) {
61		return NT_STATUS_INVALID_PARAMETER;
62	}
63	NT_STATUS_HAVE_NO_MEMORY(*server);
64
65	if (!next_token_talloc(mem_ctx, &file_sys_path, service, "\\")) {
66		return NT_STATUS_INVALID_PARAMETER;
67	}
68	NT_STATUS_HAVE_NO_MEMORY(*service);
69
70	if ((*nt_path = talloc_asprintf(mem_ctx, "\\%s", file_sys_path))
71		== NULL) {
72		return NT_STATUS_NO_MEMORY;
73	}
74	NT_STATUS_HAVE_NO_MEMORY(*nt_path);
75
76	if ((path = talloc_asprintf(mem_ctx,
77					"%s/%s",
78					cache_dir,
79					file_sys_path)) == NULL) {
80		return NT_STATUS_NO_MEMORY;
81	}
82#if _SAMBA_BUILD_ == 4
83	path = string_sub_talloc(mem_ctx, path, "\\", "/");
84#else
85	path = talloc_string_sub(mem_ctx, path, "\\", "/");
86#endif
87	if (!path) {
88		return NT_STATUS_NO_MEMORY;
89	}
90
91	*unix_path = talloc_strdup(mem_ctx, path);
92	NT_STATUS_HAVE_NO_MEMORY(*unix_path);
93
94	talloc_free(path);
95	return NT_STATUS_OK;
96}
97
98/****************************************************************
99 prepare the local disc storage for "unix_path"
100****************************************************************/
101
102static NTSTATUS gpo_prepare_local_store(TALLOC_CTX *mem_ctx,
103                                        const char *cache_dir,
104					const char *unix_path)
105{
106	char *current_dir;
107	char *tok;
108
109	current_dir = talloc_strdup(mem_ctx, cache_dir);
110	NT_STATUS_HAVE_NO_MEMORY(current_dir);
111
112	if ((mkdir(cache_dir, 0644)) < 0 && errno != EEXIST) {
113		return NT_STATUS_ACCESS_DENIED;
114	}
115
116	while (next_token_talloc(mem_ctx, &unix_path, &tok, "/")) {
117		if (strequal(tok, GPO_CACHE_DIR)) {
118			break;
119		}
120	}
121
122	while (next_token_talloc(mem_ctx, &unix_path, &tok, "/")) {
123		current_dir = talloc_asprintf_append_buffer(current_dir, "/%s", tok);
124		NT_STATUS_HAVE_NO_MEMORY(current_dir);
125
126		if ((mkdir(current_dir, 0644)) < 0 && errno != EEXIST) {
127			return NT_STATUS_ACCESS_DENIED;
128		}
129	}
130
131	return NT_STATUS_OK;
132}
133
134static NTSTATUS gpo_connect_server(ADS_STRUCT *ads, struct loadparm_context *lp_ctx,
135                                   const char *server, const char *service, void *ret_cli)
136{
137	NTSTATUS result;
138#if _SAMBA_BUILD_ == 3
139	struct cli_state *cli;
140
141
142	result = cli_full_connection(&cli,
143			global_myname(),
144			server,
145			NULL, 0,
146			service, "A:",
147			ads->auth.user_name, NULL,
148			ads->auth.password,
149			CLI_FULL_CONNECTION_USE_KERBEROS |
150			CLI_FULL_CONNECTION_FALLBACK_AFTER_KERBEROS,
151			Undefined, NULL);
152	if (!NT_STATUS_IS_OK(result)) {
153		DEBUG(10,("check_refresh_gpo: "
154				"failed to connect: %s\n",
155				nt_errstr(result)));
156		return result;
157	}
158	*(struct cli_state **) ret_cli = cli;
159#else
160	struct smbcli_state *cli = NULL;
161	struct smbcli_options options;
162	struct smbcli_session_options session_options;
163
164	lp_smbcli_options(lp_ctx, &options);
165	lp_smbcli_session_options(lp_ctx, &session_options);
166
167	result = smbcli_full_connection(NULL, &cli,
168			server,
169			NULL, service,
170			NULL /*devtype*/, NULL /* socket options */,
171			ads->credentials,
172			lp_resolve_context(lp_ctx),
173			tevent_context_init(ads),
174			&options,
175			&session_options,
176			lp_iconv_convenience(lp_ctx),
177			lp_gensec_settings(ads, lp_ctx));
178	if (!NT_STATUS_IS_OK(result)) {
179		DEBUG(10,("failed to connect: %s\n",
180				nt_errstr(result)));
181		return result;
182	}
183	*(struct smbcli_state **) ret_cli = cli;
184#endif
185	return NT_STATUS_OK;
186}
187
188/****************************************************************
189 download a full GPO via CIFS
190****************************************************************/
191
192NTSTATUS gpo_fetch_files(TALLOC_CTX *mem_ctx,
193                         ADS_STRUCT *ads,
194                         struct loadparm_context *lp_ctx,
195                         const char *cache_dir,
196			 struct GROUP_POLICY_OBJECT *gpo)
197{
198	NTSTATUS result;
199	char *server, *service, *nt_path, *unix_path;
200	char *nt_ini_path, *unix_ini_path;
201#if _SAMBA_BUILD_ == 3
202	struct cli_state *cli;
203#else
204	struct smbcli_state *cli;
205#endif
206
207
208	result = gpo_explode_filesyspath(mem_ctx, cache_dir, gpo->file_sys_path,
209					 &server, &service, &nt_path,
210					 &unix_path);
211	NT_STATUS_NOT_OK_RETURN(result);
212
213
214	result = gpo_connect_server(ads, lp_ctx, server, service, &cli);
215	NT_STATUS_NOT_OK_RETURN(result);
216
217
218	result = gpo_prepare_local_store(mem_ctx, cache_dir, unix_path);
219	NT_STATUS_NOT_OK_RETURN(result);
220
221	unix_ini_path = talloc_asprintf(mem_ctx, "%s/%s", unix_path, GPT_INI);
222	nt_ini_path = talloc_asprintf(mem_ctx, "%s\\%s", nt_path, GPT_INI);
223	NT_STATUS_HAVE_NO_MEMORY(unix_ini_path);
224	NT_STATUS_HAVE_NO_MEMORY(nt_ini_path);
225
226	result = gpo_copy_file(mem_ctx, cli, nt_ini_path, unix_ini_path);
227	NT_STATUS_NOT_OK_RETURN(result);
228
229	result = gpo_sync_directories(mem_ctx, cli, nt_path, unix_path);
230	NT_STATUS_NOT_OK_RETURN(result);
231
232	return NT_STATUS_OK;
233}
234
235/****************************************************************
236 get the locally stored gpt.ini version number
237****************************************************************/
238
239NTSTATUS gpo_get_sysvol_gpt_version(TALLOC_CTX *mem_ctx,
240				    const char *unix_path,
241				    uint32_t *sysvol_version,
242				    char **display_name)
243{
244	NTSTATUS status;
245	uint32_t version = 0;
246	char *local_path = NULL;
247	char *name = NULL;
248
249	if (!unix_path) {
250		return NT_STATUS_OK;
251	}
252
253	local_path = talloc_asprintf(mem_ctx, "%s/%s", unix_path, GPT_INI);
254	NT_STATUS_HAVE_NO_MEMORY(local_path);
255
256	status = parse_gpt_ini(mem_ctx, local_path, &version, &name);
257	if (!NT_STATUS_IS_OK(status)) {
258		DEBUG(10,("gpo_get_sysvol_gpt_version: "
259			"failed to parse ini [%s]: %s\n",
260			local_path, nt_errstr(status)));
261		return status;
262	}
263
264	if (sysvol_version) {
265		*sysvol_version = version;
266	}
267
268	if (name && *display_name) {
269		*display_name = talloc_strdup(mem_ctx, name);
270		NT_STATUS_HAVE_NO_MEMORY(*display_name);
271	}
272
273	return NT_STATUS_OK;
274}
275