source: branches/samba-3.5.x/source4/param/generic.c@ 737

Last change on this file since 737 was 414, checked in by Herwig Bauernfeind, 15 years ago

Samba 3.5.0: Initial import
File size: 7.1 KB
Line 
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 "param/param.h"
22#include "param/loadparm.h"
23#include "system/filesys.h"
24
25struct param_section *param_get_section(struct param_context *ctx, const char *name)
26{
27 struct param_section *sect;
28
29 if (name == NULL)
30 name = GLOBAL_NAME;
31
32 for (sect = ctx->sections; sect; sect = sect->next) {
33 if (!strcasecmp_m(sect->name, name))
34 return sect;
35 }
36
37 return NULL;
38}
39
40struct parmlist_entry *param_section_get(struct param_section *section, const char *name)
41{
42 return parmlist_get(section->parameters, name);
43}
44
45struct param_section *param_add_section(struct param_context *ctx, const char *section_name)
46{
47 struct param_section *section;
48 section = talloc_zero(ctx, struct param_section);
49 if (section == NULL)
50 return NULL;
51
52 section->name = talloc_strdup(section, section_name);
53 DLIST_ADD_END(ctx->sections, section, struct param_section *);
54 return section;
55}
56
57/* Look up parameter. If it is not found, add it */
58struct parmlist_entry *param_get_add(struct param_context *ctx, const char *name, const char *section_name)
59{
60 struct param_section *section;
61 struct parmlist_entry *p;
62
63 SMB_ASSERT(section_name != NULL);
64 SMB_ASSERT(name != NULL);
65
66 section = param_get_section(ctx, section_name);
67
68 if (section == NULL) {
69 section = param_add_section(ctx, section_name);
70 }
71
72 p = param_section_get(section, name);
73 if (p == NULL) {
74 p = talloc_zero(section, struct parmlist_entry);
75 if (p == NULL)
76 return NULL;
77
78 p->key = talloc_strdup(p, name);
79 DLIST_ADD_END(section->parameters->entries, p, struct parmlist_entry *);
80 }
81
82 return p;
83}
84
85const char *param_get_string(struct param_context *ctx, const char *param, const char *section_name)
86{
87 struct param_section *section = param_get_section(ctx, section_name);
88
89 if (section == NULL)
90 return NULL;
91
92 return parmlist_get_string(section->parameters, param, NULL);
93}
94
95int param_set_string(struct param_context *ctx, const char *param, const char *value, const char *section_name)
96{
97 struct param_section *section = param_get_section(ctx, section_name);
98
99 if (section == NULL)
100 return -1;
101
102 return parmlist_set_string(section->parameters, param, value);
103}
104
105const char **param_get_string_list(struct param_context *ctx, const char *param, const char *separator, const char *section_name)
106{
107 struct param_section *section = param_get_section(ctx, section_name);
108
109 if (section == NULL)
110 return NULL;
111
112 return parmlist_get_string_list(section->parameters, param, separator);
113}
114
115int param_set_string_list(struct param_context *ctx, const char *param, const char **list, const char *section)
116{
117 struct parmlist_entry *p = param_get_add(ctx, param, section);
118
119 p->value = str_list_join(p, list, ' ');
120
121 return 0;
122}
123
124int param_get_int(struct param_context *ctx, const char *param, int default_v, const char *section_name)
125{
126 struct param_section *section = param_get_section(ctx, section_name);
127
128 if (section == NULL)
129 return default_v;
130
131 return parmlist_get_int(section->parameters, param, default_v);
132}
133
134void param_set_int(struct param_context *ctx, const char *param, int value, const char *section)
135{
136 struct parmlist_entry *p = param_get_add(ctx, section, param);
137
138 if (!p)
139 return;
140
141 p->value = talloc_asprintf(p, "%d", value);
142}
143
144unsigned long param_get_ulong(struct param_context *ctx, const char *param, unsigned long default_v, const char *section)
145{
146 const char *value = param_get_string(ctx, param, section);
147
148 if (value)
149 return strtoul(value, NULL, 0);
150
151 return default_v;
152}
153
154void param_set_ulong(struct param_context *ctx, const char *name, unsigned long value, const char *section)
155{
156 struct parmlist_entry *p = param_get_add(ctx, name, section);
157
158 if (!p)
159 return;
160
161 p->value = talloc_asprintf(p, "%lu", value);
162}
163
164static bool param_sfunc (const char *name, void *_ctx)
165{
166 struct param_context *ctx = (struct param_context *)_ctx;
167 struct param_section *section = param_get_section(ctx, name);
168
169 if (section == NULL) {
170 section = talloc_zero(ctx, struct param_section);
171 if (section == NULL)
172 return false;
173
174 section->name = talloc_strdup(section, name);
175
176 DLIST_ADD_END(ctx->sections, section, struct param_section *);
177 }
178
179 /* Make sure this section is on top of the list for param_pfunc */
180 DLIST_PROMOTE(ctx->sections, section);
181
182 return true;
183}
184
185static bool param_pfunc (const char *name, const char *value, void *_ctx)
186{
187 struct param_context *ctx = (struct param_context *)_ctx;
188 struct parmlist_entry *p = param_section_get(ctx->sections, name);
189
190 if (!p) {
191 p = talloc_zero(ctx->sections, struct parmlist_entry);
192 if (p == NULL)
193 return false;
194
195 p->key = talloc_strdup(p, name);
196 p->value = talloc_strdup(p, value);
197 DLIST_ADD(ctx->sections->parameters->entries, p);
198 } else { /* Replace current value */
199 talloc_free(p->value);
200 p->value = talloc_strdup(p, value);
201 }
202
203 return true;
204}
205
206struct param_context *param_init(TALLOC_CTX *mem_ctx)
207{
208 return talloc_zero(mem_ctx, struct param_context);
209}
210
211
212int param_read(struct param_context *ctx, const char *fn)
213{
214 ctx->sections = talloc_zero(ctx, struct param_section);
215 if (ctx->sections == NULL)
216 return -1;
217
218 ctx->sections->name = talloc_strdup(ctx->sections, "global");
219 if (!pm_process( fn, param_sfunc, param_pfunc, ctx)) {
220 return -1;
221 }
222
223 return 0;
224}
225
226int param_use(struct loadparm_context *lp_ctx, struct param_context *ctx)
227{
228 struct param_section *section;
229
230 for (section = ctx->sections; section; section = section->next) {
231 struct parmlist_entry *param;
232 bool isglobal = strcmp(section->name, "global") == 0;
233 for (param = section->parameters->entries; param; param = param->next) {
234 if (isglobal)
235 lp_do_global_parameter(lp_ctx, param->key,
236 param->value);
237 else {
238 struct loadparm_service *service =
239 lp_service(lp_ctx, section->name);
240 if (service == NULL)
241 service = lp_add_service(lp_ctx, lp_default_service(lp_ctx), section->name);
242 lp_do_service_parameter(lp_ctx, service, param->key, param->value);
243 }
244 }
245 }
246 return 0;
247}
248
249int param_write(struct param_context *ctx, const char *fn)
250{
251 int file;
252 struct param_section *section;
253
254 if (fn == NULL || ctx == NULL)
255 return -1;
256
257 file = open(fn, O_WRONLY|O_CREAT, 0755);
258
259 if (file == -1)
260 return -1;
261
262 for (section = ctx->sections; section; section = section->next) {
263 struct parmlist_entry *param;
264
265 fdprintf(file, "[%s]\n", section->name);
266 for (param = section->parameters->entries; param; param = param->next) {
267 fdprintf(file, "\t%s = %s\n", param->key, param->value);
268 }
269 fdprintf(file, "\n");
270 }
271
272 close(file);
273
274 return 0;
275}
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