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author | Christian Grothoff <christian@grothoff.org> | 2021-09-05 16:58:55 +0200 |
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committer | Christian Grothoff <christian@grothoff.org> | 2021-09-05 16:59:04 +0200 |
commit | b4e034d9aa471c6244718914e08be3ee414b18e6 (patch) | |
tree | d92d932db4a769eeb5780a91abcc8601ff31a503 /src/util/configuration_helper.c | |
parent | 00c03c7bb03f7ecae5b082eadf05a9bb29b0b957 (diff) | |
download | gnunet-b4e034d9aa471c6244718914e08be3ee414b18e6.tar.gz gnunet-b4e034d9aa471c6244718914e08be3ee414b18e6.zip |
refactor gnunet-config to make preload hacks obsolete
Diffstat (limited to 'src/util/configuration_helper.c')
-rw-r--r-- | src/util/configuration_helper.c | 316 |
1 files changed, 316 insertions, 0 deletions
diff --git a/src/util/configuration_helper.c b/src/util/configuration_helper.c new file mode 100644 index 000000000..eb8b543d1 --- /dev/null +++ b/src/util/configuration_helper.c | |||
@@ -0,0 +1,316 @@ | |||
1 | /* | ||
2 | This file is part of GNUnet. | ||
3 | Copyright (C) 2006, 2007, 2008, 2009, 2013, 2020, 2021 GNUnet e.V. | ||
4 | |||
5 | GNUnet is free software: you can redistribute it and/or modify it | ||
6 | under the terms of the GNU Affero General Public License as published | ||
7 | by the Free Software Foundation, either version 3 of the License, | ||
8 | or (at your option) any later version. | ||
9 | |||
10 | GNUnet is distributed in the hope that it will be useful, but | ||
11 | WITHOUT ANY WARRANTY; without even the implied warranty of | ||
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
13 | Affero General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU Affero General Public License | ||
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
17 | |||
18 | SPDX-License-Identifier: AGPL3.0-or-later | ||
19 | */ | ||
20 | /** | ||
21 | * @file src/util/configuration_helper.c | ||
22 | * @brief helper logic for gnunet-config | ||
23 | * @author Christian Grothoff | ||
24 | */ | ||
25 | #include "platform.h" | ||
26 | #include "gnunet_util_lib.h" | ||
27 | |||
28 | /** | ||
29 | * Print each option in a given section as a filename. | ||
30 | * | ||
31 | * @param cls closure | ||
32 | * @param section name of the section | ||
33 | * @param option name of the option | ||
34 | * @param value value of the option | ||
35 | */ | ||
36 | static void | ||
37 | print_filename_option (void *cls, | ||
38 | const char *section, | ||
39 | const char *option, | ||
40 | const char *value) | ||
41 | { | ||
42 | const struct GNUNET_CONFIGURATION_Handle *cfg = cls; | ||
43 | |||
44 | char *value_fn; | ||
45 | char *fn; | ||
46 | |||
47 | GNUNET_assert (GNUNET_OK == | ||
48 | GNUNET_CONFIGURATION_get_value_filename (cfg, | ||
49 | section, | ||
50 | option, | ||
51 | &value_fn)); | ||
52 | fn = GNUNET_STRINGS_filename_expand (value_fn); | ||
53 | if (NULL == fn) | ||
54 | fn = value_fn; | ||
55 | else | ||
56 | GNUNET_free (value_fn); | ||
57 | fprintf (stdout, | ||
58 | "%s = %s\n", | ||
59 | option, | ||
60 | fn); | ||
61 | GNUNET_free (fn); | ||
62 | } | ||
63 | |||
64 | |||
65 | /** | ||
66 | * Print each option in a given section. | ||
67 | * | ||
68 | * @param cls closure | ||
69 | * @param section name of the section | ||
70 | * @param option name of the option | ||
71 | * @param value value of the option | ||
72 | */ | ||
73 | static void | ||
74 | print_option (void *cls, | ||
75 | const char *section, | ||
76 | const char *option, | ||
77 | const char *value) | ||
78 | { | ||
79 | (void) cls; | ||
80 | (void) section; | ||
81 | |||
82 | fprintf (stdout, | ||
83 | "%s = %s\n", | ||
84 | option, | ||
85 | value); | ||
86 | } | ||
87 | |||
88 | |||
89 | /** | ||
90 | * Print out given section name. | ||
91 | * | ||
92 | * @param cls unused | ||
93 | * @param section a section in the configuration file | ||
94 | */ | ||
95 | static void | ||
96 | print_section_name (void *cls, | ||
97 | const char *section) | ||
98 | { | ||
99 | (void) cls; | ||
100 | fprintf (stdout, | ||
101 | "%s\n", | ||
102 | section); | ||
103 | } | ||
104 | |||
105 | |||
106 | void | ||
107 | GNUNET_CONFIGURATION_config_tool_run ( | ||
108 | void *cls, | ||
109 | char *const *args, | ||
110 | const char *cfgfile, | ||
111 | const struct GNUNET_CONFIGURATION_Handle *cfg) | ||
112 | { | ||
113 | struct GNUNET_CONFIGURATION_ConfigSettings *cs = cls; | ||
114 | struct GNUNET_CONFIGURATION_Handle *out = NULL; | ||
115 | struct GNUNET_CONFIGURATION_Handle *ncfg = NULL; | ||
116 | |||
117 | (void) args; | ||
118 | if (NULL != cs->backend_check) | ||
119 | { | ||
120 | char *name; | ||
121 | |||
122 | GNUNET_asprintf (&name, | ||
123 | "libgnunet_plugin_%s", | ||
124 | cs->backend_check); | ||
125 | cs->global_ret = (GNUNET_OK == | ||
126 | GNUNET_PLUGIN_test (name)) ? 0 : 77; | ||
127 | GNUNET_free (name); | ||
128 | return; | ||
129 | } | ||
130 | |||
131 | if (cs->diagnostics) | ||
132 | { | ||
133 | /* Re-parse the configuration with diagnostics enabled. */ | ||
134 | ncfg = GNUNET_CONFIGURATION_create (); | ||
135 | GNUNET_CONFIGURATION_enable_diagnostics (ncfg); | ||
136 | GNUNET_CONFIGURATION_load (ncfg, | ||
137 | cfgfile); | ||
138 | cfg = ncfg; | ||
139 | } | ||
140 | |||
141 | if (cs->full) | ||
142 | cs->rewrite = GNUNET_YES; | ||
143 | if (cs->list_sections) | ||
144 | { | ||
145 | fprintf (stderr, | ||
146 | _ ("The following sections are available:\n")); | ||
147 | GNUNET_CONFIGURATION_iterate_sections (cfg, | ||
148 | &print_section_name, | ||
149 | NULL); | ||
150 | return; | ||
151 | } | ||
152 | if ( (! cs->rewrite) && | ||
153 | (NULL == cs->section) ) | ||
154 | { | ||
155 | char *serialization; | ||
156 | |||
157 | if (! cs->diagnostics) | ||
158 | { | ||
159 | fprintf (stderr, | ||
160 | _ ("%s, %s or %s argument is required\n"), | ||
161 | "--section", | ||
162 | "--list-sections", | ||
163 | "--diagnostics"); | ||
164 | cs->global_ret = EXIT_INVALIDARGUMENT; | ||
165 | return; | ||
166 | } | ||
167 | serialization = GNUNET_CONFIGURATION_serialize_diagnostics (cfg); | ||
168 | fprintf (stdout, | ||
169 | "%s", | ||
170 | serialization); | ||
171 | GNUNET_free (serialization); | ||
172 | } | ||
173 | else if ( (NULL != cs->section) && | ||
174 | (NULL == cs->value) ) | ||
175 | { | ||
176 | if (NULL == cs->option) | ||
177 | { | ||
178 | GNUNET_CONFIGURATION_iterate_section_values ( | ||
179 | cfg, | ||
180 | cs->section, | ||
181 | cs->is_filename | ||
182 | ? &print_filename_option | ||
183 | : &print_option, | ||
184 | (void *) cfg); | ||
185 | } | ||
186 | else | ||
187 | { | ||
188 | char *value; | ||
189 | |||
190 | if (cs->is_filename) | ||
191 | { | ||
192 | if (GNUNET_OK != | ||
193 | GNUNET_CONFIGURATION_get_value_filename (cfg, | ||
194 | cs->section, | ||
195 | cs->option, | ||
196 | &value)) | ||
197 | { | ||
198 | GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR, | ||
199 | cs->section, | ||
200 | cs->option); | ||
201 | cs->global_ret = EXIT_NOTCONFIGURED; | ||
202 | return; | ||
203 | } | ||
204 | } | ||
205 | else | ||
206 | { | ||
207 | if (GNUNET_OK != | ||
208 | GNUNET_CONFIGURATION_get_value_string (cfg, | ||
209 | cs->section, | ||
210 | cs->option, | ||
211 | &value)) | ||
212 | { | ||
213 | GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR, | ||
214 | cs->section, | ||
215 | cs->option); | ||
216 | cs->global_ret = EXIT_NOTCONFIGURED; | ||
217 | return; | ||
218 | } | ||
219 | } | ||
220 | fprintf (stdout, | ||
221 | "%s\n", | ||
222 | value); | ||
223 | GNUNET_free (value); | ||
224 | } | ||
225 | } | ||
226 | else if (NULL != cs->section) | ||
227 | { | ||
228 | if (NULL == cs->option) | ||
229 | { | ||
230 | fprintf (stderr, | ||
231 | _ ("--option argument required to set value\n")); | ||
232 | cs->global_ret = EXIT_INVALIDARGUMENT; | ||
233 | return; | ||
234 | } | ||
235 | out = GNUNET_CONFIGURATION_dup (cfg); | ||
236 | GNUNET_CONFIGURATION_set_value_string (out, | ||
237 | cs->section, | ||
238 | cs->option, | ||
239 | cs->value); | ||
240 | cs->rewrite = GNUNET_YES; | ||
241 | } | ||
242 | if (cs->rewrite) | ||
243 | { | ||
244 | char *cfg_fn = NULL; | ||
245 | |||
246 | if (NULL == out) | ||
247 | out = GNUNET_CONFIGURATION_dup (cfg); | ||
248 | |||
249 | if (NULL == cfgfile) | ||
250 | { | ||
251 | const char *xdg = getenv ("XDG_CONFIG_HOME"); | ||
252 | |||
253 | if (NULL != xdg) | ||
254 | GNUNET_asprintf (&cfg_fn, | ||
255 | "%s%s%s", | ||
256 | xdg, | ||
257 | DIR_SEPARATOR_STR, | ||
258 | GNUNET_OS_project_data_get ()->config_file); | ||
259 | else | ||
260 | cfg_fn = GNUNET_strdup ( | ||
261 | GNUNET_OS_project_data_get ()->user_config_file); | ||
262 | cfgfile = cfg_fn; | ||
263 | } | ||
264 | |||
265 | if (! cs->full) | ||
266 | { | ||
267 | struct GNUNET_CONFIGURATION_Handle *def; | ||
268 | |||
269 | def = GNUNET_CONFIGURATION_create (); | ||
270 | if (GNUNET_OK != | ||
271 | GNUNET_CONFIGURATION_load (def, | ||
272 | NULL)) | ||
273 | { | ||
274 | fprintf (stderr, | ||
275 | _ ("failed to load configuration defaults")); | ||
276 | cs->global_ret = 1; | ||
277 | GNUNET_CONFIGURATION_destroy (def); | ||
278 | GNUNET_CONFIGURATION_destroy (out); | ||
279 | GNUNET_free (cfg_fn); | ||
280 | return; | ||
281 | } | ||
282 | if (GNUNET_OK != | ||
283 | GNUNET_CONFIGURATION_write_diffs (def, | ||
284 | out, | ||
285 | cfgfile)) | ||
286 | cs->global_ret = 2; | ||
287 | GNUNET_CONFIGURATION_destroy (def); | ||
288 | } | ||
289 | else | ||
290 | { | ||
291 | if (GNUNET_OK != | ||
292 | GNUNET_CONFIGURATION_write (out, | ||
293 | cfgfile)) | ||
294 | cs->global_ret = 2; | ||
295 | } | ||
296 | GNUNET_free (cfg_fn); | ||
297 | } | ||
298 | if (NULL != out) | ||
299 | GNUNET_CONFIGURATION_destroy (out); | ||
300 | if (NULL != ncfg) | ||
301 | GNUNET_CONFIGURATION_destroy (ncfg); | ||
302 | } | ||
303 | |||
304 | |||
305 | void | ||
306 | GNUNET_CONFIGURATION_config_settings_free ( | ||
307 | struct GNUNET_CONFIGURATION_ConfigSettings *cs) | ||
308 | { | ||
309 | GNUNET_free (cs->option); | ||
310 | GNUNET_free (cs->section); | ||
311 | GNUNET_free (cs->value); | ||
312 | GNUNET_free (cs->backend_check); | ||
313 | } | ||
314 | |||
315 | |||
316 | /* end of configuration_helper.c */ | ||