| File: | rc/cafe-screensaver-command.c |
| Warning: | line 428, column 3 Value stored to 'reply' is never read |
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| 1 | /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- |
| 2 | * |
| 3 | * Copyright (C) 2004-2006 William Jon McCann <mccann@jhu.edu> |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU General Public License as |
| 7 | * published by the Free Software Foundation; either version 2 of the |
| 8 | * License, or (at your option) any later version. |
| 9 | * |
| 10 | * This program 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 | * 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., 51 Franklin St, Fifth Floor, Boston, MA |
| 18 | * 02110-1301, USA. |
| 19 | * |
| 20 | * Authors: William Jon McCann <mccann@jhu.edu> |
| 21 | * |
| 22 | */ |
| 23 | |
| 24 | #include "config.h" |
| 25 | |
| 26 | #include <stdlib.h> |
| 27 | #include <locale.h> |
| 28 | #include <glib.h> |
| 29 | #include <glib/gi18n.h> |
| 30 | |
| 31 | #define DBUS_API_SUBJECT_TO_CHANGE |
| 32 | #include <dbus/dbus.h> |
| 33 | #include <dbus/dbus-glib.h> |
| 34 | #include <dbus/dbus-glib-lowlevel.h> |
| 35 | |
| 36 | #define GS_SERVICE"org.cafe.ScreenSaver" "org.cafe.ScreenSaver" |
| 37 | #define GS_PATH"/org/cafe/ScreenSaver" "/org/cafe/ScreenSaver" |
| 38 | #define GS_INTERFACE"org.cafe.ScreenSaver" "org.cafe.ScreenSaver" |
| 39 | |
| 40 | static gboolean do_quit = FALSE(0); |
| 41 | static gboolean do_lock = FALSE(0); |
| 42 | static gboolean do_unlock = FALSE(0); |
| 43 | static gboolean do_cycle = FALSE(0); |
| 44 | static gboolean do_activate = FALSE(0); |
| 45 | static gboolean do_deactivate = FALSE(0); |
| 46 | static gboolean do_version = FALSE(0); |
| 47 | static gboolean do_poke = FALSE(0); |
| 48 | static gboolean do_inhibit = FALSE(0); |
| 49 | |
| 50 | static gboolean do_query = FALSE(0); |
| 51 | static gboolean do_time = FALSE(0); |
| 52 | |
| 53 | static char *inhibit_reason = NULL((void*)0); |
| 54 | static char *inhibit_application = NULL((void*)0); |
| 55 | |
| 56 | static GOptionEntry entries [] = |
| 57 | { |
| 58 | { |
| 59 | "exit", 0, 0, G_OPTION_ARG_NONE, &do_quit, |
| 60 | N_("Causes the screensaver to exit gracefully")("Causes the screensaver to exit gracefully"), NULL((void*)0) |
| 61 | }, |
| 62 | { |
| 63 | "query", 'q', 0, G_OPTION_ARG_NONE, &do_query, |
| 64 | N_("Query the state of the screensaver")("Query the state of the screensaver"), NULL((void*)0) |
| 65 | }, |
| 66 | { |
| 67 | "time", 't', 0, G_OPTION_ARG_NONE, &do_time, |
| 68 | N_("Query the length of time the screensaver has been active")("Query the length of time the screensaver has been active"), NULL((void*)0) |
| 69 | }, |
| 70 | { |
| 71 | "lock", 'l', 0, G_OPTION_ARG_NONE, &do_lock, |
| 72 | N_("Tells the running screensaver process to lock the screen immediately")("Tells the running screensaver process to lock the screen immediately" ), NULL((void*)0) |
| 73 | }, |
| 74 | { |
| 75 | "unlock", 'u', 0, G_OPTION_ARG_NONE, &do_unlock, |
| 76 | N_("Tells the running screensaver process to unlock the screen immediately")("Tells the running screensaver process to unlock the screen immediately" ), NULL((void*)0) |
| 77 | }, |
| 78 | { |
| 79 | "cycle", 'c', 0, G_OPTION_ARG_NONE, &do_cycle, |
| 80 | N_("If the screensaver is active then switch to another graphics demo")("If the screensaver is active then switch to another graphics demo" ), NULL((void*)0) |
| 81 | }, |
| 82 | { |
| 83 | "activate", 'a', 0, G_OPTION_ARG_NONE, &do_activate, |
| 84 | N_("Turn the screensaver on (blank the screen)")("Turn the screensaver on (blank the screen)"), NULL((void*)0) |
| 85 | }, |
| 86 | { |
| 87 | "deactivate", 'd', 0, G_OPTION_ARG_NONE, &do_deactivate, |
| 88 | N_("If the screensaver is active then deactivate it (un-blank the screen)")("If the screensaver is active then deactivate it (un-blank the screen)" ), NULL((void*)0) |
| 89 | }, |
| 90 | { |
| 91 | "poke", 'p', 0, G_OPTION_ARG_NONE, &do_poke, |
| 92 | N_("Poke the running screensaver to simulate user activity")("Poke the running screensaver to simulate user activity"), NULL((void*)0) |
| 93 | }, |
| 94 | { |
| 95 | "inhibit", 'i', 0, G_OPTION_ARG_NONE, &do_inhibit, |
| 96 | N_("Inhibit the screensaver from activating. Command blocks while inhibit is active.")("Inhibit the screensaver from activating. Command blocks while inhibit is active." ), NULL((void*)0) |
| 97 | }, |
| 98 | { |
| 99 | "application-name", 'n', 0, G_OPTION_ARG_STRING, &inhibit_application, |
| 100 | N_("The calling application that is inhibiting the screensaver")("The calling application that is inhibiting the screensaver" ), NULL((void*)0) |
| 101 | }, |
| 102 | { |
| 103 | "reason", 'r', 0, G_OPTION_ARG_STRING, &inhibit_reason, |
| 104 | N_("The reason for inhibiting the screensaver")("The reason for inhibiting the screensaver"), NULL((void*)0) |
| 105 | }, |
| 106 | { |
| 107 | "version", 'V', 0, G_OPTION_ARG_NONE, &do_version, |
| 108 | N_("Version of this application")("Version of this application"), NULL((void*)0) |
| 109 | }, |
| 110 | { NULL((void*)0) } |
| 111 | }; |
| 112 | |
| 113 | static GMainLoop *loop = NULL((void*)0); |
| 114 | |
| 115 | static gboolean |
| 116 | screensaver_is_running (DBusConnection *connection) |
| 117 | { |
| 118 | DBusError error; |
| 119 | gboolean exists; |
| 120 | |
| 121 | g_return_val_if_fail (connection != NULL, FALSE)do{ (void)0; }while (0); |
| 122 | |
| 123 | dbus_error_init (&error); |
| 124 | exists = dbus_bus_name_has_owner (connection, GS_SERVICE"org.cafe.ScreenSaver", &error); |
| 125 | if (dbus_error_is_set (&error)) |
| 126 | dbus_error_free (&error); |
| 127 | |
| 128 | return exists; |
| 129 | } |
| 130 | |
| 131 | static DBusMessage * |
| 132 | screensaver_send_message_inhibit (DBusConnection *connection, |
| 133 | const char *application, |
| 134 | const char *reason) |
| 135 | { |
| 136 | DBusMessage *message; |
| 137 | DBusMessage *reply; |
| 138 | DBusError error; |
| 139 | DBusMessageIter iter; |
| 140 | |
| 141 | g_return_val_if_fail (connection != NULL, NULL)do{ (void)0; }while (0); |
| 142 | |
| 143 | dbus_error_init (&error); |
| 144 | |
| 145 | message = dbus_message_new_method_call (GS_SERVICE"org.cafe.ScreenSaver", GS_PATH"/org/cafe/ScreenSaver", GS_INTERFACE"org.cafe.ScreenSaver", "Inhibit"); |
| 146 | if (message == NULL((void*)0)) |
| 147 | { |
| 148 | g_warning ("Couldn't allocate the dbus message"); |
| 149 | return NULL((void*)0); |
| 150 | } |
| 151 | |
| 152 | dbus_message_iter_init_append (message, &iter); |
| 153 | dbus_message_iter_append_basic (&iter, DBUS_TYPE_STRING((int) 's'), &application); |
| 154 | dbus_message_iter_append_basic (&iter, DBUS_TYPE_STRING((int) 's'), &reason); |
| 155 | |
| 156 | reply = dbus_connection_send_with_reply_and_block (connection, |
| 157 | message, |
| 158 | -1, &error); |
| 159 | if (dbus_error_is_set (&error)) |
| 160 | { |
| 161 | g_warning ("%s raised:\n %s\n\n", error.name, error.message); |
| 162 | reply = NULL((void*)0); |
| 163 | } |
| 164 | |
| 165 | dbus_connection_flush (connection); |
| 166 | |
| 167 | dbus_message_unref (message); |
| 168 | dbus_error_free (&error); |
| 169 | |
| 170 | return reply; |
| 171 | } |
| 172 | |
| 173 | static DBusMessage * |
| 174 | screensaver_send_message_bool (DBusConnection *connection, |
| 175 | const char *name, |
| 176 | gboolean value) |
| 177 | { |
| 178 | DBusMessage *message; |
| 179 | DBusMessage *reply; |
| 180 | DBusError error; |
| 181 | DBusMessageIter iter; |
| 182 | |
| 183 | g_return_val_if_fail (connection != NULL, NULL)do{ (void)0; }while (0); |
| 184 | g_return_val_if_fail (name != NULL, NULL)do{ (void)0; }while (0); |
| 185 | |
| 186 | dbus_error_init (&error); |
| 187 | |
| 188 | message = dbus_message_new_method_call (GS_SERVICE"org.cafe.ScreenSaver", GS_PATH"/org/cafe/ScreenSaver", GS_INTERFACE"org.cafe.ScreenSaver", name); |
| 189 | if (message == NULL((void*)0)) |
| 190 | { |
| 191 | g_warning ("Couldn't allocate the dbus message"); |
| 192 | return NULL((void*)0); |
| 193 | } |
| 194 | |
| 195 | dbus_message_iter_init_append (message, &iter); |
| 196 | dbus_message_iter_append_basic (&iter, DBUS_TYPE_BOOLEAN((int) 'b'), &value); |
| 197 | |
| 198 | reply = dbus_connection_send_with_reply_and_block (connection, |
| 199 | message, |
| 200 | -1, &error); |
| 201 | if (dbus_error_is_set (&error)) |
| 202 | { |
| 203 | g_warning ("%s raised:\n %s\n\n", error.name, error.message); |
| 204 | reply = NULL((void*)0); |
| 205 | } |
| 206 | |
| 207 | dbus_connection_flush (connection); |
| 208 | |
| 209 | dbus_message_unref (message); |
| 210 | dbus_error_free (&error); |
| 211 | |
| 212 | return reply; |
| 213 | } |
| 214 | |
| 215 | static DBusMessage * |
| 216 | screensaver_send_message_void (DBusConnection *connection, |
| 217 | const char *name, |
| 218 | gboolean expect_reply) |
| 219 | { |
| 220 | DBusMessage *message; |
| 221 | DBusMessage *reply; |
| 222 | DBusError error; |
| 223 | |
| 224 | g_return_val_if_fail (connection != NULL, NULL)do{ (void)0; }while (0); |
| 225 | g_return_val_if_fail (name != NULL, NULL)do{ (void)0; }while (0); |
| 226 | |
| 227 | dbus_error_init (&error); |
| 228 | |
| 229 | message = dbus_message_new_method_call (GS_SERVICE"org.cafe.ScreenSaver", GS_PATH"/org/cafe/ScreenSaver", GS_INTERFACE"org.cafe.ScreenSaver", name); |
| 230 | if (message == NULL((void*)0)) |
| 231 | { |
| 232 | g_warning ("Couldn't allocate the dbus message"); |
| 233 | return NULL((void*)0); |
| 234 | } |
| 235 | |
| 236 | if (! expect_reply) |
| 237 | { |
| 238 | if (!dbus_connection_send (connection, message, NULL((void*)0))) |
| 239 | g_warning ("could not send message"); |
| 240 | reply = NULL((void*)0); |
| 241 | } |
| 242 | else |
| 243 | { |
| 244 | reply = dbus_connection_send_with_reply_and_block (connection, |
| 245 | message, |
| 246 | -1, &error); |
| 247 | if (dbus_error_is_set (&error)) |
| 248 | { |
| 249 | g_warning ("%s raised:\n %s\n\n", error.name, error.message); |
| 250 | reply = NULL((void*)0); |
| 251 | } |
| 252 | } |
| 253 | dbus_connection_flush (connection); |
| 254 | |
| 255 | dbus_message_unref (message); |
| 256 | dbus_error_free (&error); |
| 257 | |
| 258 | return reply; |
| 259 | } |
| 260 | |
| 261 | static char ** |
| 262 | get_string_from_iter (DBusMessageIter *iter, |
| 263 | int *num_elements) |
| 264 | { |
| 265 | int count; |
| 266 | char **buffer; |
| 267 | |
| 268 | if (num_elements != NULL((void*)0)) |
| 269 | { |
| 270 | *num_elements = 0; |
| 271 | } |
| 272 | |
| 273 | count = 0; |
| 274 | buffer = (char **)malloc (sizeof (char *) * 8); |
| 275 | |
| 276 | if (buffer == NULL((void*)0)) |
| 277 | { |
| 278 | goto oom; |
| 279 | } |
| 280 | |
| 281 | buffer[0] = NULL((void*)0); |
| 282 | while (dbus_message_iter_get_arg_type (iter) == DBUS_TYPE_STRING((int) 's')) |
| 283 | { |
| 284 | const char *value; |
| 285 | char *str; |
| 286 | |
| 287 | if ((count % 8) == 0 && count != 0) |
| 288 | { |
| 289 | buffer = realloc (buffer, sizeof (char *) * (count + 8)); |
| 290 | if (buffer == NULL((void*)0)) |
| 291 | { |
| 292 | goto oom; |
| 293 | } |
| 294 | } |
| 295 | |
| 296 | dbus_message_iter_get_basic (iter, &value); |
| 297 | str = strdup (value); |
| 298 | if (str == NULL((void*)0)) |
| 299 | { |
| 300 | goto oom; |
| 301 | } |
| 302 | |
| 303 | buffer[count] = str; |
| 304 | |
| 305 | dbus_message_iter_next (iter); |
| 306 | count++; |
| 307 | } |
| 308 | |
| 309 | if ((count % 8) == 0) |
| 310 | { |
| 311 | buffer = realloc (buffer, sizeof (char *) * (count + 1)); |
| 312 | if (buffer == NULL((void*)0)) |
| 313 | { |
| 314 | goto oom; |
| 315 | } |
| 316 | } |
| 317 | |
| 318 | buffer[count] = NULL((void*)0); |
| 319 | if (num_elements != NULL((void*)0)) |
| 320 | { |
| 321 | *num_elements = count; |
| 322 | } |
| 323 | return buffer; |
| 324 | |
| 325 | oom: |
| 326 | g_debug ("%s %d : error allocating memory\n", __FILE__"cafe-screensaver-command.c", __LINE__326); |
| 327 | return NULL((void*)0); |
| 328 | |
| 329 | } |
| 330 | |
| 331 | static gboolean |
| 332 | do_command (DBusConnection *connection) |
| 333 | { |
| 334 | DBusMessage *reply; |
| 335 | |
| 336 | if (do_quit) |
| 337 | { |
| 338 | reply = screensaver_send_message_void (connection, "Quit", FALSE(0)); |
| 339 | goto done; |
| 340 | } |
| 341 | |
| 342 | if (do_query) |
| 343 | { |
| 344 | DBusMessageIter iter; |
| 345 | DBusMessageIter array; |
| 346 | dbus_bool_t v; |
| 347 | |
| 348 | reply = screensaver_send_message_void (connection, "GetActive", TRUE(!(0))); |
| 349 | if (! reply) |
| 350 | { |
| 351 | g_message ("Did not receive a reply from the screensaver."); |
| 352 | goto done; |
| 353 | } |
| 354 | |
| 355 | dbus_message_iter_init (reply, &iter); |
| 356 | dbus_message_iter_get_basic (&iter, &v); |
| 357 | g_print (_("The screensaver is %s\n")gettext ("The screensaver is %s\n"), v ? _("active")gettext ("active") : _("inactive")gettext ("inactive")); |
| 358 | |
| 359 | dbus_message_unref (reply); |
| 360 | |
| 361 | reply = screensaver_send_message_void (connection, "GetInhibitors", TRUE(!(0))); |
| 362 | if (! reply) |
| 363 | { |
| 364 | g_message ("Did not receive a reply from screensaver."); |
| 365 | goto done; |
| 366 | } |
| 367 | |
| 368 | dbus_message_iter_init (reply, &iter); |
| 369 | dbus_message_iter_recurse (&iter, &array); |
| 370 | |
| 371 | if (dbus_message_iter_get_arg_type (&array) == DBUS_TYPE_INVALID((int) '\0')) |
| 372 | { |
| 373 | g_print (_("The screensaver is not inhibited\n")gettext ("The screensaver is not inhibited\n")); |
| 374 | } |
| 375 | else |
| 376 | { |
| 377 | char **inhibitors; |
| 378 | int i; |
| 379 | int num; |
| 380 | |
| 381 | g_print (_("The screensaver is being inhibited by:\n")gettext ("The screensaver is being inhibited by:\n")); |
| 382 | inhibitors = get_string_from_iter (&array, &num); |
| 383 | for (i = 0; i < num; i++) |
| 384 | { |
| 385 | g_print ("\t%s\n", inhibitors[i]); |
| 386 | } |
| 387 | g_strfreev (inhibitors); |
| 388 | } |
| 389 | |
| 390 | dbus_message_unref (reply); |
| 391 | } |
| 392 | |
| 393 | if (do_time) |
| 394 | { |
| 395 | DBusMessageIter iter; |
| 396 | dbus_bool_t v; |
| 397 | dbus_int32_t t; |
| 398 | |
| 399 | reply = screensaver_send_message_void (connection, "GetActive", TRUE(!(0))); |
| 400 | if (! reply) |
| 401 | { |
| 402 | g_message ("Did not receive a reply from the screensaver."); |
| 403 | goto done; |
| 404 | } |
| 405 | |
| 406 | dbus_message_iter_init (reply, &iter); |
| 407 | dbus_message_iter_get_basic (&iter, &v); |
| 408 | dbus_message_unref (reply); |
| 409 | |
| 410 | if (v) |
| 411 | { |
| 412 | |
| 413 | reply = screensaver_send_message_void (connection, "GetActiveTime", TRUE(!(0))); |
| 414 | dbus_message_iter_init (reply, &iter); |
| 415 | dbus_message_iter_get_basic (&iter, &t); |
| 416 | g_print (_("The screensaver has been active for %d seconds.\n")gettext ("The screensaver has been active for %d seconds.\n"), t); |
| 417 | |
| 418 | dbus_message_unref (reply); |
| 419 | } |
| 420 | else |
| 421 | { |
| 422 | g_print (_("The screensaver is not currently active.\n")gettext ("The screensaver is not currently active.\n")); |
| 423 | } |
| 424 | } |
| 425 | |
| 426 | if (do_lock) |
| 427 | { |
| 428 | reply = screensaver_send_message_void (connection, "Lock", FALSE(0)); |
Value stored to 'reply' is never read | |
| 429 | } |
| 430 | |
| 431 | if (do_unlock) |
| 432 | { |
| 433 | reply = screensaver_send_message_void (connection, "Unlock", FALSE(0)); |
| 434 | } |
| 435 | |
| 436 | if (do_cycle) |
| 437 | { |
| 438 | reply = screensaver_send_message_void (connection, "Cycle", FALSE(0)); |
| 439 | } |
| 440 | |
| 441 | if (do_poke) |
| 442 | { |
| 443 | reply = screensaver_send_message_void (connection, "SimulateUserActivity", FALSE(0)); |
| 444 | } |
| 445 | |
| 446 | if (do_activate) |
| 447 | { |
| 448 | reply = screensaver_send_message_bool (connection, "SetActive", TRUE(!(0))); |
| 449 | if (! reply) |
| 450 | { |
| 451 | g_message ("Did not receive a reply from the screensaver."); |
| 452 | goto done; |
| 453 | } |
| 454 | dbus_message_unref (reply); |
| 455 | } |
| 456 | |
| 457 | if (do_deactivate) |
| 458 | { |
| 459 | reply = screensaver_send_message_bool (connection, "SetActive", FALSE(0)); |
| 460 | if (! reply) |
| 461 | { |
| 462 | g_message ("Did not receive a reply from the screensaver."); |
| 463 | goto done; |
| 464 | } |
| 465 | dbus_message_unref (reply); |
| 466 | } |
| 467 | |
| 468 | if (do_inhibit) |
| 469 | { |
| 470 | reply = screensaver_send_message_inhibit (connection, |
| 471 | inhibit_application ? inhibit_application : "Unknown", |
| 472 | inhibit_reason ? inhibit_reason : "Unknown"); |
| 473 | if (! reply) |
| 474 | { |
| 475 | g_message ("Did not receive a reply from the screensaver."); |
| 476 | goto done; |
| 477 | } |
| 478 | dbus_message_unref (reply); |
| 479 | |
| 480 | return FALSE(0); |
| 481 | } |
| 482 | |
| 483 | done: |
| 484 | g_main_loop_quit (loop); |
| 485 | |
| 486 | return FALSE(0); |
| 487 | } |
| 488 | |
| 489 | int |
| 490 | main (int argc, |
| 491 | char **argv) |
| 492 | { |
| 493 | DBusConnection *connection; |
| 494 | DBusError dbus_error; |
| 495 | GOptionContext *context; |
| 496 | gboolean retval; |
| 497 | GError *error = NULL((void*)0); |
| 498 | |
| 499 | #ifdef ENABLE_NLS1 |
| 500 | bindtextdomain (GETTEXT_PACKAGE"cafe-screensaver", CAFELOCALEDIR"/usr/local/share/locale"); |
| 501 | # ifdef HAVE_BIND_TEXTDOMAIN_CODESET |
| 502 | bind_textdomain_codeset (GETTEXT_PACKAGE"cafe-screensaver", "UTF-8"); |
| 503 | # endif |
| 504 | textdomain (GETTEXT_PACKAGE"cafe-screensaver"); |
| 505 | #endif |
| 506 | |
| 507 | g_set_prgname (argv[0]); |
| 508 | |
| 509 | if (setlocale (LC_ALL6, "") == NULL((void*)0)) |
| 510 | g_warning ("Locale not understood by C library, internationalization will not work\n"); |
| 511 | |
| 512 | context = g_option_context_new (NULL((void*)0)); |
| 513 | g_option_context_add_main_entries (context, entries, NULL((void*)0)); |
| 514 | retval = g_option_context_parse (context, &argc, &argv, &error); |
| 515 | |
| 516 | g_option_context_free (context); |
| 517 | |
| 518 | if (! retval) |
| 519 | { |
| 520 | g_warning ("%s", error->message); |
| 521 | g_error_free (error); |
| 522 | exit (1); |
| 523 | } |
| 524 | |
| 525 | if (do_version) |
| 526 | { |
| 527 | g_print ("%s %s\n", argv [0], VERSION"1.25.0"); |
| 528 | exit (1); |
| 529 | } |
| 530 | |
| 531 | dbus_error_init (&dbus_error); |
| 532 | connection = dbus_bus_get (DBUS_BUS_SESSION, &dbus_error); |
| 533 | if (! connection) |
| 534 | { |
| 535 | g_message ("Failed to connect to the D-BUS daemon: %s", dbus_error.message); |
| 536 | dbus_error_free (&dbus_error); |
| 537 | exit (1); |
| 538 | } |
| 539 | |
| 540 | dbus_connection_setup_with_g_main (connection, NULL((void*)0)); |
| 541 | |
| 542 | if (! screensaver_is_running (connection)) |
| 543 | { |
| 544 | g_message ("Screensaver is not running!"); |
| 545 | exit (1); |
| 546 | } |
| 547 | |
| 548 | g_idle_add ((GSourceFunc)do_command, connection); |
| 549 | |
| 550 | loop = g_main_loop_new (NULL((void*)0), FALSE(0)); |
| 551 | g_main_loop_run (loop); |
| 552 | |
| 553 | return 0; |
| 554 | } |