[134] | 1 | /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- |
---|
| 2 | * |
---|
| 3 | * Copyright (C) 2007 William Jon McCann <mccann@jhu.edu> |
---|
| 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 2 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, write to the Free Software |
---|
| 17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
---|
| 18 | * |
---|
| 19 | */ |
---|
| 20 | |
---|
| 21 | #include "config.h" |
---|
| 22 | |
---|
| 23 | #include <stdlib.h> |
---|
| 24 | #include <stdio.h> |
---|
| 25 | #include <fcntl.h> |
---|
| 26 | #include <unistd.h> |
---|
| 27 | #include <string.h> |
---|
| 28 | #include <signal.h> |
---|
| 29 | #include <sys/stat.h> |
---|
| 30 | #include <sys/types.h> |
---|
| 31 | |
---|
| 32 | #define DBUS_API_SUBJECT_TO_CHANGE |
---|
| 33 | #include <dbus/dbus-glib.h> |
---|
| 34 | #include <dbus/dbus-glib-lowlevel.h> |
---|
| 35 | |
---|
| 36 | #include <glib.h> |
---|
| 37 | #include <glib/gi18n.h> |
---|
| 38 | #include <glib/gstdio.h> |
---|
| 39 | #include <glib-object.h> |
---|
| 40 | |
---|
| 41 | #include "gdm-settings-client.h" |
---|
| 42 | #include "gdm-settings-utils.h" |
---|
| 43 | |
---|
| 44 | #define SETTINGS_DBUS_NAME "org.gnome.DisplayManager" |
---|
| 45 | #define SETTINGS_DBUS_PATH "/org/gnome/DisplayManager/Settings" |
---|
| 46 | #define SETTINGS_DBUS_INTERFACE "org.gnome.DisplayManager.Settings" |
---|
| 47 | |
---|
| 48 | static GHashTable *notifiers = NULL; |
---|
| 49 | static GHashTable *schemas = NULL; |
---|
| 50 | static DBusGProxy *settings_proxy = NULL; |
---|
| 51 | static DBusGConnection *connection = NULL; |
---|
| 52 | static guint32 id_serial = 0; |
---|
| 53 | |
---|
| 54 | typedef struct { |
---|
| 55 | guint id; |
---|
| 56 | char *root; |
---|
| 57 | GdmSettingsClientNotifyFunc func; |
---|
| 58 | gpointer user_data; |
---|
| 59 | GFreeFunc destroy_notify; |
---|
| 60 | } GdmSettingsClientNotify; |
---|
| 61 | |
---|
| 62 | static void |
---|
| 63 | gdm_settings_client_notify_free (GdmSettingsClientNotify *notify) |
---|
| 64 | { |
---|
| 65 | g_free (notify->root); |
---|
| 66 | |
---|
| 67 | if (notify->destroy_notify != NULL) { |
---|
| 68 | notify->destroy_notify (notify->user_data); |
---|
| 69 | } |
---|
| 70 | |
---|
| 71 | g_free (notify); |
---|
| 72 | } |
---|
| 73 | |
---|
| 74 | static GdmSettingsEntry * |
---|
| 75 | get_entry_for_key (const char *key) |
---|
| 76 | { |
---|
| 77 | GdmSettingsEntry *entry; |
---|
| 78 | |
---|
| 79 | entry = g_hash_table_lookup (schemas, key); |
---|
| 80 | |
---|
| 81 | if (entry == NULL) { |
---|
| 82 | g_warning ("GdmSettingsClient: unable to find schema for key: %s", key); |
---|
| 83 | } |
---|
| 84 | |
---|
| 85 | return entry; |
---|
| 86 | } |
---|
| 87 | |
---|
| 88 | static gboolean |
---|
| 89 | set_value (const char *key, |
---|
| 90 | const char *value) |
---|
| 91 | { |
---|
| 92 | GError *error; |
---|
| 93 | gboolean res; |
---|
| 94 | |
---|
| 95 | /* FIXME: check cache */ |
---|
| 96 | |
---|
| 97 | g_debug ("Setting %s=%s", key, value); |
---|
| 98 | error = NULL; |
---|
| 99 | res = dbus_g_proxy_call (settings_proxy, |
---|
| 100 | "SetValue", |
---|
| 101 | &error, |
---|
| 102 | G_TYPE_STRING, key, |
---|
| 103 | G_TYPE_STRING, value, |
---|
| 104 | G_TYPE_INVALID, |
---|
| 105 | G_TYPE_INVALID); |
---|
| 106 | if (! res) { |
---|
| 107 | if (error != NULL) { |
---|
| 108 | /*g_debug ("Failed to get value for %s: %s", key, error->message);*/ |
---|
| 109 | g_error_free (error); |
---|
| 110 | } else { |
---|
| 111 | /*g_debug ("Failed to get value for %s", key);*/ |
---|
| 112 | } |
---|
| 113 | |
---|
| 114 | return FALSE; |
---|
| 115 | } |
---|
| 116 | |
---|
| 117 | return TRUE; |
---|
| 118 | } |
---|
| 119 | |
---|
| 120 | static gboolean |
---|
| 121 | get_value (const char *key, |
---|
| 122 | char **value) |
---|
| 123 | { |
---|
| 124 | GError *error; |
---|
| 125 | char *str; |
---|
| 126 | gboolean res; |
---|
| 127 | |
---|
| 128 | /* FIXME: check cache */ |
---|
| 129 | |
---|
| 130 | error = NULL; |
---|
| 131 | res = dbus_g_proxy_call (settings_proxy, |
---|
| 132 | "GetValue", |
---|
| 133 | &error, |
---|
| 134 | G_TYPE_STRING, key, |
---|
| 135 | G_TYPE_INVALID, |
---|
| 136 | G_TYPE_STRING, &str, |
---|
| 137 | G_TYPE_INVALID); |
---|
| 138 | if (! res) { |
---|
| 139 | if (error != NULL) { |
---|
| 140 | /*g_debug ("Failed to get value for %s: %s", key, error->message);*/ |
---|
| 141 | g_error_free (error); |
---|
| 142 | } else { |
---|
| 143 | /*g_debug ("Failed to get value for %s", key);*/ |
---|
| 144 | } |
---|
| 145 | |
---|
| 146 | return FALSE; |
---|
| 147 | } |
---|
| 148 | |
---|
| 149 | if (value != NULL) { |
---|
| 150 | *value = g_strdup (str); |
---|
| 151 | } |
---|
| 152 | |
---|
| 153 | g_free (str); |
---|
| 154 | |
---|
| 155 | return TRUE; |
---|
| 156 | } |
---|
| 157 | |
---|
| 158 | static void |
---|
| 159 | assert_signature (GdmSettingsEntry *entry, |
---|
| 160 | const char *signature) |
---|
| 161 | { |
---|
| 162 | const char *sig; |
---|
| 163 | |
---|
| 164 | sig = gdm_settings_entry_get_signature (entry); |
---|
| 165 | |
---|
| 166 | g_assert (sig != NULL); |
---|
| 167 | g_assert (signature != NULL); |
---|
| 168 | g_assert (strcmp (signature, sig) == 0); |
---|
| 169 | } |
---|
| 170 | |
---|
| 171 | static guint32 |
---|
| 172 | get_next_serial (void) |
---|
| 173 | { |
---|
| 174 | guint32 serial; |
---|
| 175 | |
---|
| 176 | serial = id_serial++; |
---|
| 177 | |
---|
| 178 | if ((gint32)id_serial < 0) { |
---|
| 179 | id_serial = 1; |
---|
| 180 | } |
---|
| 181 | |
---|
| 182 | return serial; |
---|
| 183 | } |
---|
| 184 | |
---|
| 185 | guint |
---|
| 186 | gdm_settings_client_notify_add (const char *root, |
---|
| 187 | GdmSettingsClientNotifyFunc func, |
---|
| 188 | gpointer user_data, |
---|
| 189 | GFreeFunc destroy_notify) |
---|
| 190 | { |
---|
| 191 | guint32 id; |
---|
| 192 | GdmSettingsClientNotify *notify; |
---|
| 193 | |
---|
| 194 | id = get_next_serial (); |
---|
| 195 | |
---|
| 196 | notify = g_new0 (GdmSettingsClientNotify, 1); |
---|
| 197 | notify->id = id; |
---|
| 198 | notify->root = g_strdup (root); |
---|
| 199 | notify->func = func; |
---|
| 200 | notify->user_data = user_data; |
---|
| 201 | notify->destroy_notify = destroy_notify; |
---|
| 202 | |
---|
| 203 | g_hash_table_insert (notifiers, GINT_TO_POINTER (id), notify); |
---|
| 204 | |
---|
| 205 | return id; |
---|
| 206 | } |
---|
| 207 | |
---|
| 208 | void |
---|
| 209 | gdm_settings_client_notify_remove (guint id) |
---|
| 210 | { |
---|
| 211 | g_hash_table_remove (notifiers, GINT_TO_POINTER (id)); |
---|
| 212 | } |
---|
| 213 | |
---|
| 214 | gboolean |
---|
| 215 | gdm_settings_client_get_string (const char *key, |
---|
| 216 | char **value) |
---|
| 217 | { |
---|
| 218 | GdmSettingsEntry *entry; |
---|
| 219 | gboolean ret; |
---|
| 220 | gboolean res; |
---|
| 221 | char *str; |
---|
| 222 | |
---|
| 223 | g_return_val_if_fail (key != NULL, FALSE); |
---|
| 224 | |
---|
| 225 | entry = get_entry_for_key (key); |
---|
| 226 | g_assert (entry != NULL); |
---|
| 227 | |
---|
| 228 | assert_signature (entry, "s"); |
---|
| 229 | |
---|
| 230 | ret = FALSE; |
---|
| 231 | |
---|
| 232 | res = get_value (key, &str); |
---|
| 233 | |
---|
| 234 | if (! res) { |
---|
| 235 | /* use the default */ |
---|
| 236 | str = g_strdup (gdm_settings_entry_get_default_value (entry)); |
---|
| 237 | } |
---|
| 238 | |
---|
| 239 | if (value != NULL) { |
---|
| 240 | *value = g_strdup (str); |
---|
| 241 | } |
---|
| 242 | |
---|
| 243 | ret = TRUE; |
---|
| 244 | |
---|
| 245 | g_free (str); |
---|
| 246 | |
---|
| 247 | return ret; |
---|
| 248 | } |
---|
| 249 | |
---|
| 250 | gboolean |
---|
| 251 | gdm_settings_client_get_locale_string (const char *key, |
---|
| 252 | const char *locale, |
---|
| 253 | char **value) |
---|
| 254 | { |
---|
| 255 | char *candidate_key; |
---|
| 256 | char *translated_value; |
---|
| 257 | char **languages; |
---|
| 258 | gboolean free_languages = FALSE; |
---|
| 259 | int i; |
---|
| 260 | gboolean ret; |
---|
| 261 | |
---|
| 262 | g_return_val_if_fail (key != NULL, FALSE); |
---|
| 263 | |
---|
| 264 | candidate_key = NULL; |
---|
| 265 | translated_value = NULL; |
---|
| 266 | |
---|
| 267 | if (locale != NULL) { |
---|
| 268 | languages = g_new (char *, 2); |
---|
| 269 | languages[0] = (char *)locale; |
---|
| 270 | languages[1] = NULL; |
---|
| 271 | |
---|
| 272 | free_languages = TRUE; |
---|
| 273 | } else { |
---|
| 274 | languages = (char **) g_get_language_names (); |
---|
| 275 | free_languages = FALSE; |
---|
| 276 | } |
---|
| 277 | |
---|
| 278 | for (i = 0; languages[i]; i++) { |
---|
| 279 | gboolean res; |
---|
| 280 | |
---|
| 281 | candidate_key = g_strdup_printf ("%s[%s]", key, languages[i]); |
---|
| 282 | |
---|
| 283 | res = get_value (candidate_key, &translated_value); |
---|
| 284 | g_free (candidate_key); |
---|
| 285 | |
---|
| 286 | if (res) { |
---|
| 287 | break; |
---|
| 288 | } |
---|
| 289 | |
---|
| 290 | g_free (translated_value); |
---|
| 291 | translated_value = NULL; |
---|
| 292 | } |
---|
| 293 | |
---|
| 294 | /* Fallback to untranslated key |
---|
| 295 | */ |
---|
| 296 | if (translated_value == NULL) { |
---|
| 297 | get_value (key, &translated_value); |
---|
| 298 | } |
---|
| 299 | |
---|
| 300 | if (free_languages) { |
---|
| 301 | g_strfreev (languages); |
---|
| 302 | } |
---|
| 303 | |
---|
| 304 | if (translated_value != NULL) { |
---|
| 305 | ret = TRUE; |
---|
| 306 | if (value != NULL) { |
---|
| 307 | *value = g_strdup (translated_value); |
---|
| 308 | } |
---|
| 309 | } else { |
---|
| 310 | ret = FALSE; |
---|
| 311 | } |
---|
| 312 | |
---|
| 313 | g_free (translated_value); |
---|
| 314 | |
---|
| 315 | return ret; |
---|
| 316 | } |
---|
| 317 | |
---|
| 318 | gboolean |
---|
| 319 | gdm_settings_client_get_boolean (const char *key, |
---|
| 320 | gboolean *value) |
---|
| 321 | { |
---|
| 322 | GdmSettingsEntry *entry; |
---|
| 323 | gboolean ret; |
---|
| 324 | gboolean res; |
---|
| 325 | char *str; |
---|
| 326 | |
---|
| 327 | g_return_val_if_fail (key != NULL, FALSE); |
---|
| 328 | |
---|
| 329 | entry = get_entry_for_key (key); |
---|
| 330 | g_assert (entry != NULL); |
---|
| 331 | |
---|
| 332 | assert_signature (entry, "b"); |
---|
| 333 | |
---|
| 334 | ret = FALSE; |
---|
| 335 | |
---|
| 336 | res = get_value (key, &str); |
---|
| 337 | |
---|
| 338 | if (! res) { |
---|
| 339 | /* use the default */ |
---|
| 340 | str = g_strdup (gdm_settings_entry_get_default_value (entry)); |
---|
| 341 | } |
---|
| 342 | |
---|
| 343 | ret = gdm_settings_parse_value_as_boolean (str, value); |
---|
| 344 | |
---|
| 345 | g_free (str); |
---|
| 346 | |
---|
| 347 | return ret; |
---|
| 348 | } |
---|
| 349 | |
---|
| 350 | gboolean |
---|
| 351 | gdm_settings_client_get_int (const char *key, |
---|
| 352 | int *value) |
---|
| 353 | { |
---|
| 354 | GdmSettingsEntry *entry; |
---|
| 355 | gboolean ret; |
---|
| 356 | gboolean res; |
---|
| 357 | char *str; |
---|
| 358 | |
---|
| 359 | g_return_val_if_fail (key != NULL, FALSE); |
---|
| 360 | |
---|
| 361 | entry = get_entry_for_key (key); |
---|
| 362 | g_assert (entry != NULL); |
---|
| 363 | |
---|
| 364 | assert_signature (entry, "i"); |
---|
| 365 | |
---|
| 366 | ret = FALSE; |
---|
| 367 | |
---|
| 368 | res = get_value (key, &str); |
---|
| 369 | |
---|
| 370 | if (! res) { |
---|
| 371 | /* use the default */ |
---|
| 372 | str = g_strdup (gdm_settings_entry_get_default_value (entry)); |
---|
| 373 | } |
---|
| 374 | |
---|
| 375 | ret = gdm_settings_parse_value_as_integer (str, value); |
---|
| 376 | |
---|
| 377 | g_free (str); |
---|
| 378 | |
---|
| 379 | return ret; |
---|
| 380 | } |
---|
| 381 | |
---|
| 382 | gboolean |
---|
| 383 | gdm_settings_client_set_int (const char *key, |
---|
| 384 | int value) |
---|
| 385 | { |
---|
| 386 | GdmSettingsEntry *entry; |
---|
| 387 | gboolean res; |
---|
| 388 | char *str; |
---|
| 389 | |
---|
| 390 | g_return_val_if_fail (key != NULL, FALSE); |
---|
| 391 | |
---|
| 392 | entry = get_entry_for_key (key); |
---|
| 393 | g_assert (entry != NULL); |
---|
| 394 | |
---|
| 395 | assert_signature (entry, "i"); |
---|
| 396 | |
---|
| 397 | str = gdm_settings_parse_integer_as_value (value); |
---|
| 398 | |
---|
| 399 | res = set_value (key, str); |
---|
| 400 | |
---|
| 401 | g_free (str); |
---|
| 402 | |
---|
| 403 | return res; |
---|
| 404 | } |
---|
| 405 | |
---|
| 406 | gboolean |
---|
| 407 | gdm_settings_client_set_string (const char *key, |
---|
| 408 | const char *value) |
---|
| 409 | { |
---|
| 410 | GdmSettingsEntry *entry; |
---|
| 411 | gboolean res; |
---|
| 412 | |
---|
| 413 | g_return_val_if_fail (key != NULL, FALSE); |
---|
| 414 | |
---|
| 415 | entry = get_entry_for_key (key); |
---|
| 416 | g_assert (entry != NULL); |
---|
| 417 | |
---|
| 418 | assert_signature (entry, "s"); |
---|
| 419 | |
---|
| 420 | res = set_value (key, value); |
---|
| 421 | |
---|
| 422 | return res; |
---|
| 423 | } |
---|
| 424 | |
---|
| 425 | gboolean |
---|
| 426 | gdm_settings_client_set_boolean (const char *key, |
---|
| 427 | gboolean value) |
---|
| 428 | { |
---|
| 429 | GdmSettingsEntry *entry; |
---|
| 430 | gboolean res; |
---|
| 431 | char *str; |
---|
| 432 | |
---|
| 433 | g_return_val_if_fail (key != NULL, FALSE); |
---|
| 434 | |
---|
| 435 | entry = get_entry_for_key (key); |
---|
| 436 | g_assert (entry != NULL); |
---|
| 437 | |
---|
| 438 | assert_signature (entry, "b"); |
---|
| 439 | |
---|
| 440 | str = gdm_settings_parse_boolean_as_value (value); |
---|
| 441 | |
---|
| 442 | res = set_value (key, str); |
---|
| 443 | |
---|
| 444 | g_free (str); |
---|
| 445 | |
---|
| 446 | return res; |
---|
| 447 | } |
---|
| 448 | |
---|
| 449 | static void |
---|
| 450 | hashify_list (GdmSettingsEntry *entry, |
---|
| 451 | gpointer data) |
---|
| 452 | { |
---|
| 453 | g_hash_table_insert (schemas, g_strdup (gdm_settings_entry_get_key (entry)), entry); |
---|
| 454 | } |
---|
| 455 | |
---|
| 456 | static void |
---|
| 457 | send_notification (gpointer key, |
---|
| 458 | GdmSettingsClientNotify *notify, |
---|
| 459 | GdmSettingsEntry *entry) |
---|
| 460 | { |
---|
| 461 | /* get out if the key is not in the region of interest */ |
---|
| 462 | if (! g_str_has_prefix (gdm_settings_entry_get_key (entry), notify->root)) { |
---|
| 463 | return; |
---|
| 464 | } |
---|
| 465 | |
---|
| 466 | notify->func (notify->id, entry, notify->user_data); |
---|
| 467 | } |
---|
| 468 | |
---|
| 469 | static void |
---|
| 470 | on_value_changed (DBusGProxy *proxy, |
---|
| 471 | const char *key, |
---|
| 472 | const char *old_value, |
---|
| 473 | const char *new_value, |
---|
| 474 | gpointer data) |
---|
| 475 | { |
---|
| 476 | GdmSettingsEntry *entry; |
---|
| 477 | |
---|
| 478 | g_debug ("Value Changed key=%s old=%s new=%s", key, old_value, new_value); |
---|
| 479 | |
---|
| 480 | /* lookup entry */ |
---|
| 481 | entry = get_entry_for_key (key); |
---|
| 482 | |
---|
| 483 | if (entry == NULL) { |
---|
| 484 | return; |
---|
| 485 | } |
---|
| 486 | |
---|
| 487 | gdm_settings_entry_set_value (entry, new_value); |
---|
| 488 | |
---|
| 489 | g_hash_table_foreach (notifiers, (GHFunc)send_notification, entry); |
---|
| 490 | } |
---|
| 491 | |
---|
| 492 | gboolean |
---|
| 493 | gdm_settings_client_init (const char *file, |
---|
| 494 | const char *root) |
---|
| 495 | { |
---|
| 496 | GError *error; |
---|
| 497 | GSList *list; |
---|
| 498 | |
---|
| 499 | g_return_val_if_fail (file != NULL, FALSE); |
---|
| 500 | g_return_val_if_fail (root != NULL, FALSE); |
---|
| 501 | |
---|
| 502 | g_assert (schemas == NULL); |
---|
| 503 | |
---|
| 504 | error = NULL; |
---|
| 505 | connection = dbus_g_bus_get (DBUS_BUS_SYSTEM, &error); |
---|
| 506 | if (connection == NULL) { |
---|
| 507 | if (error != NULL) { |
---|
| 508 | g_warning ("error getting system bus: %s", error->message); |
---|
| 509 | g_error_free (error); |
---|
| 510 | } |
---|
| 511 | return FALSE; |
---|
| 512 | } |
---|
| 513 | |
---|
| 514 | settings_proxy = dbus_g_proxy_new_for_name (connection, |
---|
| 515 | SETTINGS_DBUS_NAME, |
---|
| 516 | SETTINGS_DBUS_PATH, |
---|
| 517 | SETTINGS_DBUS_INTERFACE); |
---|
| 518 | if (settings_proxy == NULL) { |
---|
| 519 | g_warning ("Unable to connect to settings server"); |
---|
| 520 | return FALSE; |
---|
| 521 | } |
---|
| 522 | |
---|
| 523 | list = NULL; |
---|
| 524 | if (! gdm_settings_parse_schemas (file, root, &list)) { |
---|
| 525 | g_warning ("Unable to parse schemas"); |
---|
| 526 | return FALSE; |
---|
| 527 | } |
---|
| 528 | |
---|
| 529 | notifiers = g_hash_table_new_full (g_direct_hash, g_direct_equal, NULL, (GDestroyNotify)gdm_settings_client_notify_free); |
---|
| 530 | |
---|
| 531 | schemas = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, (GDestroyNotify)gdm_settings_entry_free); |
---|
| 532 | g_slist_foreach (list, (GFunc)hashify_list, NULL); |
---|
| 533 | |
---|
| 534 | dbus_g_proxy_add_signal (settings_proxy, "ValueChanged", G_TYPE_STRING, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_INVALID); |
---|
| 535 | dbus_g_proxy_connect_signal (settings_proxy, |
---|
| 536 | "ValueChanged", |
---|
| 537 | G_CALLBACK (on_value_changed), |
---|
| 538 | NULL, |
---|
| 539 | NULL); |
---|
| 540 | |
---|
| 541 | |
---|
| 542 | return TRUE; |
---|
| 543 | } |
---|
| 544 | |
---|
| 545 | void |
---|
| 546 | gdm_settings_client_shutdown (void) |
---|
| 547 | { |
---|
| 548 | |
---|
| 549 | } |
---|