source: trunk/server/source4/param/generic.c

Last change on this file was 745, checked in by Silvan Scherrer, 13 years ago

Samba Server: updated trunk to 3.6.0
File size: 7.5 KB
RevLine 
[745]1/*
2 * Unix SMB/CIFS implementation.
3 * Copyright (C) Jelmer Vernooij 2005
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 3 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, see <http://www.gnu.org/licenses/>.
17 */
18
19#include "includes.h"
20#include "../lib/util/dlinklist.h"
21#include "../lib/util/parmlist.h"
22#include "param/param.h"
23#include "param/loadparm.h"
24#include "system/filesys.h"
25
26struct param_section *param_get_section(struct param_context *ctx, const char *name)
27{
28 struct param_section *sect;
29
30 if (name == NULL)
31 name = GLOBAL_NAME;
32
33 for (sect = ctx->sections; sect; sect = sect->next) {
34 if (!strcasecmp_m(sect->name, name))
35 return sect;
36 }
37
38 return NULL;
39}
40
41struct parmlist_entry *param_section_get(struct param_section *section, const char *name)
42{
43 return parmlist_get(section->parameters, name);
44}
45
46struct param_section *param_add_section(struct param_context *ctx, const char *section_name)
47{
48 struct param_section *section;
49 section = talloc_zero(ctx, struct param_section);
50 if (section == NULL)
51 return NULL;
52
53 section->name = talloc_strdup(section, section_name);
54 DLIST_ADD_END(ctx->sections, section, struct param_section *);
55 return section;
56}
57
58/* Look up parameter. If it is not found, add it */
59struct parmlist_entry *param_get_add(struct param_context *ctx, const char *name, const char *section_name)
60{
61 struct param_section *section;
62 struct parmlist_entry *p;
63
64 SMB_ASSERT(section_name != NULL);
65 SMB_ASSERT(name != NULL);
66
67 section = param_get_section(ctx, section_name);
68
69 if (section == NULL) {
70 section = param_add_section(ctx, section_name);
71 }
72
73 p = param_section_get(section, name);
74 if (p == NULL) {
75 p = talloc_zero(section, struct parmlist_entry);
76 if (p == NULL)
77 return NULL;
78
79 p->key = talloc_strdup(p, name);
80 DLIST_ADD_END(section->parameters->entries, p, struct parmlist_entry *);
81 }
82
83 return p;
84}
85
86const char *param_get_string(struct param_context *ctx, const char *param, const char *section_name)
87{
88 struct param_section *section = param_get_section(ctx, section_name);
89
90 if (section == NULL)
91 return NULL;
92
93 return parmlist_get_string(section->parameters, param, NULL);
94}
95
96int param_set_string(struct param_context *ctx, const char *param, const char *value, const char *section_name)
97{
98 struct param_section *section = param_get_section(ctx, section_name);
99
100 if (section == NULL)
101 return -1;
102
103 return parmlist_set_string(section->parameters, param, value);
104}
105
106const char **param_get_string_list(struct param_context *ctx, const char *param, const char *separator, const char *section_name)
107{
108 struct param_section *section = param_get_section(ctx, section_name);
109
110 if (section == NULL)
111 return NULL;
112
113 return parmlist_get_string_list(section->parameters, param, separator);
114}
115
116int param_set_string_list(struct param_context *ctx, const char *param, const char **list, const char *section)
117{
118 struct parmlist_entry *p = param_get_add(ctx, param, section);
119
120 p->value = str_list_join(p, list, ' ');
121
122 return 0;
123}
124
125int param_get_int(struct param_context *ctx, const char *param, int default_v, const char *section_name)
126{
127 struct param_section *section = param_get_section(ctx, section_name);
128
129 if (section == NULL)
130 return default_v;
131
132 return parmlist_get_int(section->parameters, param, default_v);
133}
134
135void param_set_int(struct param_context *ctx, const char *param, int value, const char *section)
136{
137 struct parmlist_entry *p = param_get_add(ctx, section, param);
138
139 if (!p)
140 return;
141
142 p->value = talloc_asprintf(p, "%d", value);
143}
144
145unsigned long param_get_ulong(struct param_context *ctx, const char *param, unsigned long default_v, const char *section)
146{
147 const char *value = param_get_string(ctx, param, section);
148
149 if (value)
150 return strtoul(value, NULL, 0);
151
152 return default_v;
153}
154
155void param_set_ulong(struct param_context *ctx, const char *name, unsigned long value, const char *section)
156{
157 struct parmlist_entry *p = param_get_add(ctx, name, section);
158
159 if (!p)
160 return;
161
162 p->value = talloc_asprintf(p, "%lu", value);
163}
164
165static bool param_sfunc (const char *name, void *_ctx)
166{
167 struct param_context *ctx = (struct param_context *)_ctx;
168 struct param_section *section = param_get_section(ctx, name);
169
170 if (section == NULL) {
171 section = talloc_zero(ctx, struct param_section);
172 if (section == NULL)
173 return false;
174
175 section->name = talloc_strdup(section, name);
176
177 DLIST_ADD_END(ctx->sections, section, struct param_section *);
178 }
179
180 /* Make sure this section is on top of the list for param_pfunc */
181 DLIST_PROMOTE(ctx->sections, section);
182
183 return true;
184}
185
186static bool param_pfunc (const char *name, const char *value, void *_ctx)
187{
188 struct param_context *ctx = (struct param_context *)_ctx;
189 struct parmlist_entry *p = param_section_get(ctx->sections, name);
190
191 if (!p) {
192 p = talloc_zero(ctx->sections, struct parmlist_entry);
193 if (p == NULL)
194 return false;
195
196 p->key = talloc_strdup(p, name);
197 p->value = talloc_strdup(p, value);
198 DLIST_ADD(ctx->sections->parameters->entries, p);
199 } else { /* Replace current value */
200 talloc_free(p->value);
201 p->value = talloc_strdup(p, value);
202 }
203
204 return true;
205}
206
207struct param_context *param_init(TALLOC_CTX *mem_ctx)
208{
209 return talloc_zero(mem_ctx, struct param_context);
210}
211
212
213int param_read(struct param_context *ctx, const char *fn)
214{
215 ctx->sections = talloc_zero(ctx, struct param_section);
216 if (ctx->sections == NULL)
217 return -1;
218
219 ctx->sections->name = talloc_strdup(ctx->sections, "global");
220 if (!pm_process( fn, param_sfunc, param_pfunc, ctx)) {
221 return -1;
222 }
223
224 return 0;
225}
226
227int param_use(struct loadparm_context *lp_ctx, struct param_context *ctx)
228{
229 struct param_section *section;
230
231 for (section = ctx->sections; section; section = section->next) {
232 struct parmlist_entry *param;
233 bool isglobal = strcmp(section->name, "global") == 0;
234 for (param = section->parameters->entries; param; param = param->next) {
235 if (isglobal)
236 lpcfg_do_global_parameter(lp_ctx, param->key,
237 param->value);
238 else {
239 struct loadparm_service *service =
240 lpcfg_service(lp_ctx, section->name);
241 if (service == NULL)
242 service = lpcfg_add_service(lp_ctx, lpcfg_default_service(lp_ctx), section->name);
243 lpcfg_do_service_parameter(lp_ctx, service, param->key, param->value);
244 }
245 }
246 }
247 return 0;
248}
249
250int param_write(struct param_context *ctx, const char *fn)
251{
252 int file;
253 struct param_section *section;
254
255 if (fn == NULL || ctx == NULL)
256 return -1;
257
258 file = open(fn, O_WRONLY|O_CREAT, 0755);
259
260 if (file == -1)
261 return -1;
262
263 for (section = ctx->sections; section; section = section->next) {
264 struct parmlist_entry *param;
265
266 fdprintf(file, "[%s]\n", section->name);
267 for (param = section->parameters->entries; param; param = param->next) {
268 fdprintf(file, "\t%s = %s\n", param->key, param->value);
269 }
270 fdprintf(file, "\n");
271 }
272
273 close(file);
274
275 return 0;
276}
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