ee3f28d1f3ac5b9e0313e7b3e3a299c0e2a8fc4c
[kai/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
24 /****************************************************************
25  explode the GPO CIFS URI into their components
26 ****************************************************************/
27
28 NTSTATUS gpo_explode_filesyspath(TALLOC_CTX *mem_ctx,
29                                  const char *cache_path,
30                                  const char *file_sys_path,
31                                  char **server,
32                                  char **service,
33                                  char **nt_path,
34                                  char **unix_path)
35 {
36         char *path = NULL;
37
38         *server = NULL;
39         *service = NULL;
40         *nt_path = NULL;
41         *unix_path = NULL;
42
43         if (!file_sys_path) {
44                 return NT_STATUS_OK;
45         }
46
47         if (!next_token_talloc(mem_ctx, &file_sys_path, server, "\\")) {
48                 return NT_STATUS_INVALID_PARAMETER;
49         }
50         NT_STATUS_HAVE_NO_MEMORY(*server);
51
52         if (!next_token_talloc(mem_ctx, &file_sys_path, service, "\\")) {
53                 return NT_STATUS_INVALID_PARAMETER;
54         }
55         NT_STATUS_HAVE_NO_MEMORY(*service);
56
57         if ((*nt_path = talloc_asprintf(mem_ctx, "\\%s", file_sys_path))
58                 == NULL) {
59                 return NT_STATUS_NO_MEMORY;
60         }
61         NT_STATUS_HAVE_NO_MEMORY(*nt_path);
62
63         if ((path = talloc_asprintf(mem_ctx,
64                                         "%s/%s",
65                                         cache_path,
66                                         file_sys_path)) == NULL) {
67                 return NT_STATUS_NO_MEMORY;
68         }
69 #if _SAMBA_BUILD_ == 4
70         path = string_sub_talloc(mem_ctx, path, "\\", "/");
71 #else
72         path = talloc_string_sub(mem_ctx, path, "\\", "/");
73 #endif
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
89 static NTSTATUS gpo_prepare_local_store(TALLOC_CTX *mem_ctx,
90                                         const char *cache_path,
91                                         const char *unix_path)
92 {
93         char *current_dir;
94         char *tok;
95
96         current_dir = talloc_strdup(mem_ctx, cache_path);
97         NT_STATUS_HAVE_NO_MEMORY(current_dir);
98
99         if ((mkdir(cache_path, 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
121 /****************************************************************
122  download a full GPO via CIFS
123 ****************************************************************/
124
125 NTSTATUS gpo_fetch_files(TALLOC_CTX *mem_ctx,
126                          const char *cache_path,
127                          struct cli_state *cli,
128                          struct GROUP_POLICY_OBJECT *gpo)
129 {
130         NTSTATUS result;
131         char *server, *service, *nt_path, *unix_path;
132         char *nt_ini_path, *unix_ini_path;
133
134         result = gpo_explode_filesyspath(mem_ctx, cache_path, gpo->file_sys_path,
135                                          &server, &service, &nt_path,
136                                          &unix_path);
137         NT_STATUS_NOT_OK_RETURN(result);
138
139         result = gpo_prepare_local_store(mem_ctx, cache_path, unix_path);
140         NT_STATUS_NOT_OK_RETURN(result);
141
142         unix_ini_path = talloc_asprintf(mem_ctx, "%s/%s", unix_path, GPT_INI);
143         nt_ini_path = talloc_asprintf(mem_ctx, "%s\\%s", nt_path, GPT_INI);
144         NT_STATUS_HAVE_NO_MEMORY(unix_ini_path);
145         NT_STATUS_HAVE_NO_MEMORY(nt_ini_path);
146
147         result = gpo_copy_file(mem_ctx, cli, nt_ini_path, unix_ini_path);
148         NT_STATUS_NOT_OK_RETURN(result);
149
150         result = gpo_sync_directories(mem_ctx, cli, nt_path, unix_path);
151         NT_STATUS_NOT_OK_RETURN(result);
152
153         return NT_STATUS_OK;
154 }
155
156 /****************************************************************
157  get the locally stored gpt.ini version number
158 ****************************************************************/
159
160 NTSTATUS gpo_get_sysvol_gpt_version(TALLOC_CTX *mem_ctx,
161                                     const char *unix_path,
162                                     uint32_t *sysvol_version,
163                                     char **display_name)
164 {
165         NTSTATUS status;
166         uint32_t version = 0;
167         char *local_path = NULL;
168         char *name = NULL;
169
170         if (!unix_path) {
171                 return NT_STATUS_OK;
172         }
173
174         local_path = talloc_asprintf(mem_ctx, "%s/%s", unix_path, GPT_INI);
175         NT_STATUS_HAVE_NO_MEMORY(local_path);
176
177         status = parse_gpt_ini(mem_ctx, local_path, &version, &name);
178         if (!NT_STATUS_IS_OK(status)) {
179                 DEBUG(10,("gpo_get_sysvol_gpt_version: "
180                         "failed to parse ini [%s]: %s\n",
181                         local_path, nt_errstr(status)));
182                 return status;
183         }
184
185         if (sysvol_version) {
186                 *sysvol_version = version;
187         }
188
189         if (name && *display_name) {
190                 *display_name = talloc_strdup(mem_ctx, name);
191                 NT_STATUS_HAVE_NO_MEMORY(*display_name);
192         }
193
194         return NT_STATUS_OK;
195 }