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 #include "libgpo/gpo_proto.h"
26 #include "libsmb/libsmb.h"
27
28 /****************************************************************
29 explode the GPO CIFS URI into their components
30 ****************************************************************/
31
gpo_explode_filesyspath(TALLOC_CTX * mem_ctx,const char * cache_dir,const char * file_sys_path,char ** server,char ** service,char ** nt_path,char ** unix_path)32 NTSTATUS gpo_explode_filesyspath(TALLOC_CTX *mem_ctx,
33 const char *cache_dir,
34 const char *file_sys_path,
35 char **server,
36 char **service,
37 char **nt_path,
38 char **unix_path)
39 {
40 char *path = NULL;
41
42 *server = NULL;
43 *service = NULL;
44 *nt_path = NULL;
45 *unix_path = NULL;
46
47 if (!file_sys_path) {
48 return NT_STATUS_OK;
49 }
50
51 if (!next_token_talloc(mem_ctx, &file_sys_path, server, "\\")) {
52 return NT_STATUS_INVALID_PARAMETER;
53 }
54 NT_STATUS_HAVE_NO_MEMORY(*server);
55
56 if (!next_token_talloc(mem_ctx, &file_sys_path, service, "\\")) {
57 return NT_STATUS_INVALID_PARAMETER;
58 }
59 NT_STATUS_HAVE_NO_MEMORY(*service);
60
61 if ((*nt_path = talloc_asprintf(mem_ctx, "\\%s", file_sys_path))
62 == NULL) {
63 return NT_STATUS_NO_MEMORY;
64 }
65 NT_STATUS_HAVE_NO_MEMORY(*nt_path);
66
67 if ((path = talloc_asprintf(mem_ctx,
68 "%s/%s",
69 cache_dir,
70 file_sys_path)) == NULL) {
71 return NT_STATUS_NO_MEMORY;
72 }
73 path = talloc_string_sub(mem_ctx, path, "\\", "/");
74 if (!path) {
75 return NT_STATUS_NO_MEMORY;
76 }
77
78 *unix_path = talloc_strdup(mem_ctx, path);
79 NT_STATUS_HAVE_NO_MEMORY(*unix_path);
80
81 talloc_free(path);
82 return NT_STATUS_OK;
83 }
84
85 /****************************************************************
86 prepare the local disc storage for "unix_path"
87 ****************************************************************/
88
gpo_prepare_local_store(TALLOC_CTX * mem_ctx,const char * cache_dir,const char * unix_path)89 static NTSTATUS gpo_prepare_local_store(TALLOC_CTX *mem_ctx,
90 const char *cache_dir,
91 const char *unix_path)
92 {
93 char *current_dir;
94 char *tok;
95
96 current_dir = talloc_strdup(mem_ctx, cache_dir);
97 NT_STATUS_HAVE_NO_MEMORY(current_dir);
98
99 if ((mkdir(cache_dir, 0644)) < 0 && errno != EEXIST) {
100 return NT_STATUS_ACCESS_DENIED;
101 }
102
103 while (next_token_talloc(mem_ctx, &unix_path, &tok, "/")) {
104 if (strequal(tok, GPO_CACHE_DIR)) {
105 break;
106 }
107 }
108
109 while (next_token_talloc(mem_ctx, &unix_path, &tok, "/")) {
110 current_dir = talloc_asprintf_append_buffer(current_dir, "/%s", tok);
111 NT_STATUS_HAVE_NO_MEMORY(current_dir);
112
113 if ((mkdir(current_dir, 0644)) < 0 && errno != EEXIST) {
114 return NT_STATUS_ACCESS_DENIED;
115 }
116 }
117
118 return NT_STATUS_OK;
119 }
120
gpo_connect_server(ADS_STRUCT * ads,const char * server,const char * service,void * ret_cli)121 static NTSTATUS gpo_connect_server(ADS_STRUCT *ads,
122 const char *server, const char *service, void *ret_cli)
123 {
124 NTSTATUS result;
125 struct cli_state *cli;
126
127 result = cli_full_connection(&cli,
128 lp_netbios_name(),
129 server,
130 NULL, 0,
131 service, "A:",
132 ads->auth.user_name, NULL,
133 ads->auth.password,
134 CLI_FULL_CONNECTION_USE_KERBEROS |
135 CLI_FULL_CONNECTION_FALLBACK_AFTER_KERBEROS,
136 SMB_SIGNING_REQUIRED);
137 if (!NT_STATUS_IS_OK(result)) {
138 DEBUG(10,("check_refresh_gpo: "
139 "failed to connect: %s\n",
140 nt_errstr(result)));
141 return result;
142 }
143 *(struct cli_state **) ret_cli = cli;
144 return NT_STATUS_OK;
145 }
146
147 /****************************************************************
148 download a full GPO via CIFS
149 ****************************************************************/
150
gpo_fetch_files(TALLOC_CTX * mem_ctx,ADS_STRUCT * ads,const char * cache_dir,const struct GROUP_POLICY_OBJECT * gpo)151 NTSTATUS gpo_fetch_files(TALLOC_CTX *mem_ctx,
152 ADS_STRUCT *ads,
153 const char *cache_dir,
154 const struct GROUP_POLICY_OBJECT *gpo)
155 {
156 NTSTATUS result;
157 char *server, *service, *nt_path, *unix_path;
158 char *nt_ini_path, *unix_ini_path;
159 struct cli_state *cli = NULL;
160
161
162 result = gpo_explode_filesyspath(mem_ctx, cache_dir, gpo->file_sys_path,
163 &server, &service, &nt_path,
164 &unix_path);
165 NT_STATUS_NOT_OK_RETURN(result);
166
167 /* for now reuse the existing ds connection */
168
169 result = gpo_connect_server(ads, server, service, &cli);
170 NT_STATUS_NOT_OK_RETURN(result);
171
172 result = gpo_prepare_local_store(mem_ctx, cache_dir, unix_path);
173 NT_STATUS_NOT_OK_RETURN(result);
174
175 unix_ini_path = talloc_asprintf(mem_ctx, "%s/%s", unix_path, GPT_INI);
176 nt_ini_path = talloc_asprintf(mem_ctx, "%s\\%s", nt_path, GPT_INI);
177 NT_STATUS_HAVE_NO_MEMORY(unix_ini_path);
178 NT_STATUS_HAVE_NO_MEMORY(nt_ini_path);
179
180 result = gpo_copy_file(mem_ctx, cli, nt_ini_path, unix_ini_path);
181 NT_STATUS_NOT_OK_RETURN(result);
182
183 result = gpo_sync_directories(mem_ctx, cli, nt_path, unix_path);
184 NT_STATUS_NOT_OK_RETURN(result);
185
186 return NT_STATUS_OK;
187 }
188
189 /****************************************************************
190 get the locally stored gpt.ini version number
191 ****************************************************************/
192
gpo_get_sysvol_gpt_version(TALLOC_CTX * mem_ctx,const char * unix_path,uint32_t * sysvol_version,char ** display_name)193 NTSTATUS gpo_get_sysvol_gpt_version(TALLOC_CTX *mem_ctx,
194 const char *unix_path,
195 uint32_t *sysvol_version,
196 char **display_name)
197 {
198 NTSTATUS status;
199 uint32_t version = 0;
200 char *local_path = NULL;
201 char *name = NULL;
202
203 if (!unix_path) {
204 return NT_STATUS_OK;
205 }
206
207 local_path = talloc_asprintf(mem_ctx, "%s/%s", unix_path, GPT_INI);
208 NT_STATUS_HAVE_NO_MEMORY(local_path);
209
210 status = parse_gpt_ini(mem_ctx, local_path, &version, &name);
211 if (!NT_STATUS_IS_OK(status)) {
212 DEBUG(10,("gpo_get_sysvol_gpt_version: "
213 "failed to parse ini [%s]: %s\n",
214 local_path, nt_errstr(status)));
215 return status;
216 }
217
218 if (sysvol_version) {
219 *sysvol_version = version;
220 }
221
222 if (name && *display_name) {
223 *display_name = talloc_strdup(mem_ctx, name);
224 NT_STATUS_HAVE_NO_MEMORY(*display_name);
225 }
226
227 return NT_STATUS_OK;
228 }
229