source: branches/samba-3.5.x/libgpo/gpo_ini.c@ 738

Last change on this file since 738 was 414, checked in by Herwig Bauernfeind, 15 years ago

Samba 3.5.0: Initial import
File size: 7.0 KB
Line 
1/*
2 * Unix SMB/CIFS implementation.
3 * Group Policy Support
4 * Copyright (C) Guenther Deschner 2007
5 * Copyright (C) Wilco Baan Hofman 2009
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, see <http://www.gnu.org/licenses/>.
19 */
20
21#include "includes.h"
22#include "gpo.h"
23#include "gpo_ini.h"
24#include "system/filesys.h"
25
26
27static bool change_section(const char *section, void *ctx_ptr)
28{
29 struct gp_inifile_context *ctx = (struct gp_inifile_context *) ctx_ptr;
30
31 if (ctx->current_section) {
32 talloc_free(ctx->current_section);
33 }
34 ctx->current_section = talloc_strdup(ctx, section);
35 return true;
36}
37
38/****************************************************************
39****************************************************************/
40
41static bool store_keyval_pair(const char *key, const char *value, void *ctx_ptr)
42{
43 struct gp_inifile_context *ctx = (struct gp_inifile_context *) ctx_ptr;
44 ctx->data = talloc_realloc(ctx, ctx->data, struct keyval_pair *, ctx->keyval_count+1);
45 ctx->data[ctx->keyval_count] = talloc_zero(ctx, struct keyval_pair);
46 ctx->data[ctx->keyval_count]->key = talloc_asprintf(ctx, "%s:%s", ctx->current_section, key);
47 ctx->data[ctx->keyval_count]->val = talloc_strdup(ctx, value);
48 ctx->keyval_count++;
49 return true;
50}
51
52/****************************************************************
53****************************************************************/
54
55static NTSTATUS convert_file_from_ucs2(TALLOC_CTX *mem_ctx,
56 const char *filename_in,
57 char **filename_out)
58{
59 int tmp_fd = -1;
60 uint8_t *data_in = NULL;
61 uint8_t *data_out = NULL;
62 char *tmp_name = NULL;
63 NTSTATUS status;
64 size_t n = 0;
65 size_t converted_size;
66
67 if (!filename_out) {
68 return NT_STATUS_INVALID_PARAMETER;
69 }
70
71 data_in = (uint8_t *)file_load(filename_in, &n, 0, NULL);
72 if (!data_in) {
73 status = NT_STATUS_NO_SUCH_FILE;
74 goto out;
75 }
76
77 tmp_name = talloc_asprintf(mem_ctx, "%s/convert_file_from_ucs2.XXXXXX",
78 tmpdir());
79 if (!tmp_name) {
80 status = NT_STATUS_NO_MEMORY;
81 goto out;
82 }
83
84 tmp_fd = mkstemp(tmp_name);
85 if (tmp_fd == -1) {
86 status = NT_STATUS_ACCESS_DENIED;
87 goto out;
88 }
89
90 if (!convert_string_talloc(mem_ctx, CH_UTF16LE, CH_UNIX, data_in, n,
91 (void *)&data_out, &converted_size, false))
92 {
93 status = NT_STATUS_INVALID_BUFFER_SIZE;
94 goto out;
95 }
96
97 /* skip utf8 BOM */
98 DEBUG(11,("convert_file_from_ucs2: "
99 "data_out[0]: 0x%x, data_out[1]: 0x%x, data_out[2]: 0x%x\n",
100 data_out[0], data_out[1], data_out[2]));
101
102 if ((data_out[0] == 0xef) && (data_out[1] == 0xbb) &&
103 (data_out[2] == 0xbf)) {
104 DEBUG(11,("convert_file_from_ucs2: "
105 "%s skipping utf8 BOM\n", tmp_name));
106 data_out += 3;
107 converted_size -= 3;
108 }
109
110 if (write(tmp_fd, data_out, converted_size) != converted_size) {
111 status = map_nt_error_from_unix(errno);
112 goto out;
113 }
114
115 *filename_out = tmp_name;
116
117 status = NT_STATUS_OK;
118
119 out:
120 if (tmp_fd != -1) {
121 close(tmp_fd);
122 }
123
124 talloc_free(data_in);
125
126 return status;
127}
128
129/****************************************************************
130****************************************************************/
131
132NTSTATUS gp_inifile_getstring(struct gp_inifile_context *ctx, const char *key, char **ret)
133{
134 int i;
135
136 for (i = 0; i < ctx->keyval_count; i++) {
137 if (strcmp(ctx->data[i]->key, key) == 0) {
138 *ret = ctx->data[i]->val;
139 return NT_STATUS_OK;
140 }
141 }
142 return NT_STATUS_NOT_FOUND;
143}
144
145/****************************************************************
146****************************************************************/
147
148NTSTATUS gp_inifile_getint(struct gp_inifile_context *ctx, const char *key, int *ret)
149{
150 char *value;
151 NTSTATUS result;
152
153 result = gp_inifile_getstring(ctx,key, &value);
154 if (!NT_STATUS_IS_OK(result)) {
155 return result;
156 }
157
158 *ret = (int)strtol(value, NULL, 10);
159 return NT_STATUS_OK;
160}
161
162/****************************************************************
163****************************************************************/
164
165NTSTATUS gp_inifile_init_context(TALLOC_CTX *mem_ctx,
166 uint32_t flags,
167 const char *unix_path,
168 const char *suffix,
169 struct gp_inifile_context **ctx_ret)
170{
171 struct gp_inifile_context *ctx = NULL;
172 NTSTATUS status;
173 int rv;
174 char *tmp_filename = NULL;
175 const char *ini_filename = NULL;
176
177 if (!unix_path || !ctx_ret) {
178 return NT_STATUS_INVALID_PARAMETER;
179 }
180
181 ctx = talloc_zero(mem_ctx, struct gp_inifile_context);
182 NT_STATUS_HAVE_NO_MEMORY(ctx);
183
184 status = gp_find_file(mem_ctx, flags, unix_path, suffix,
185 &ini_filename);
186
187 if (!NT_STATUS_IS_OK(status)) {
188 goto failed;
189 }
190
191 status = convert_file_from_ucs2(mem_ctx, ini_filename,
192 &tmp_filename);
193 if (!NT_STATUS_IS_OK(status)) {
194 goto failed;
195 }
196
197 rv = pm_process(tmp_filename, change_section, store_keyval_pair, ctx);
198 if (!rv) {
199 return NT_STATUS_NO_SUCH_FILE;
200 }
201
202
203 ctx->generated_filename = tmp_filename;
204 ctx->mem_ctx = mem_ctx;
205
206 *ctx_ret = ctx;
207
208 return NT_STATUS_OK;
209
210 failed:
211
212 DEBUG(1,("gp_inifile_init_context failed: %s\n",
213 nt_errstr(status)));
214
215 talloc_free(ctx);
216
217 return status;
218}
219
220/****************************************************************
221 parse the local gpt.ini file
222****************************************************************/
223
224#define GPT_INI_SECTION_GENERAL "General"
225#define GPT_INI_PARAMETER_VERSION "Version"
226#define GPT_INI_PARAMETER_DISPLAYNAME "displayName"
227
228NTSTATUS parse_gpt_ini(TALLOC_CTX *mem_ctx,
229 const char *filename,
230 uint32_t *version,
231 char **display_name)
232{
233 NTSTATUS result;
234 int rv;
235 int v = 0;
236 char *name = NULL;
237 struct gp_inifile_context *ctx;
238
239 if (!filename) {
240 return NT_STATUS_INVALID_PARAMETER;
241 }
242
243 ctx = talloc_zero(mem_ctx, struct gp_inifile_context);
244 NT_STATUS_HAVE_NO_MEMORY(ctx);
245
246 rv = pm_process(filename, change_section, store_keyval_pair, ctx);
247 if (!rv) {
248 return NT_STATUS_NO_SUCH_FILE;
249 }
250
251
252 result = gp_inifile_getstring(ctx, GPT_INI_SECTION_GENERAL
253 ":"GPT_INI_PARAMETER_DISPLAYNAME, &name);
254 if (!NT_STATUS_IS_OK(result)) {
255 /* the default domain policy and the default domain controller
256 * policy never have a displayname in their gpt.ini file */
257 DEBUG(10,("parse_gpt_ini: no name in %s\n", filename));
258 }
259
260 if (name && display_name) {
261 *display_name = talloc_strdup(ctx, name);
262 if (*display_name == NULL) {
263 return NT_STATUS_NO_MEMORY;
264 }
265 }
266
267 result = gp_inifile_getint(ctx, GPT_INI_SECTION_GENERAL
268 ":"GPT_INI_PARAMETER_VERSION, &v);
269 if (!NT_STATUS_IS_OK(result)) {
270 DEBUG(10,("parse_gpt_ini: no version\n"));
271 return NT_STATUS_INTERNAL_DB_CORRUPTION;
272 }
273
274 if (version) {
275 *version = v;
276 }
277
278 talloc_free(ctx);
279
280 return NT_STATUS_OK;
281}
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