| 1 | /* |
| 2 | * Copyright © 2007 Daniel Stone |
| 3 | * Copyright © 2007 Red Hat, Inc. |
| 4 | * |
| 5 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 6 | * copy of this software and associated documentation files (the "Software"), |
| 7 | * to deal in the Software without restriction, including without limitation |
| 8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 9 | * and/or sell copies of the Software, and to permit persons to whom the |
| 10 | * Software is furnished to do so, subject to the following conditions: |
| 11 | * |
| 12 | * The above copyright notice and this permission notice (including the next |
| 13 | * paragraph) shall be included in all copies or substantial portions of the |
| 14 | * Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 21 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| 22 | * DEALINGS IN THE SOFTWARE. |
| 23 | * |
| 24 | * Author: Daniel Stone <daniel@fooishbar.org> |
| 25 | */ |
| 26 | |
| 27 | #ifdef HAVE_DIX_CONFIG_H |
| 28 | #include <dix-config.h> |
| 29 | #endif |
| 30 | |
| 31 | #include <dbus/dbus.h> |
| 32 | #include <hal/libhal.h> |
| 33 | #include <string.h> |
| 34 | #include <sys/select.h> |
| 35 | |
| 36 | #include "input.h" |
| 37 | #include "inputstr.h" |
| 38 | #include "hotplug.h" |
| 39 | #include "config-backends.h" |
| 40 | #include "os.h" |
| 41 | |
| 42 | #define LIBHAL_PROP_KEY "input.x11_options." |
| 43 | #define LIBHAL_XKB_PROP_KEY "input.xkb." |
| 44 | |
| 45 | struct config_hal_info { |
| 46 | DBusConnection *system_bus; |
| 47 | LibHalContext *hal_ctx; |
| 48 | }; |
| 49 | |
| 50 | /* Used for special handling of xkb options. */ |
| 51 | struct xkb_options { |
| 52 | char *layout; |
| 53 | char *model; |
| 54 | char *rules; |
| 55 | char *variant; |
| 56 | char *options; |
| 57 | }; |
| 58 | |
| 59 | static void |
| 60 | device_removed(LibHalContext * ctx, const char *udi) |
| 61 | { |
| 62 | char *value; |
| 63 | |
| 64 | if (asprintf(&value, "hal:%s", udi) == -1) |
| 65 | return; |
| 66 | |
| 67 | remove_devices("hal", value); |
| 68 | |
| 69 | free(value); |
| 70 | } |
| 71 | |
| 72 | static char * |
| 73 | get_prop_string(LibHalContext * hal_ctx, const char *udi, const char *name) |
| 74 | { |
| 75 | char *prop, *ret; |
| 76 | |
| 77 | prop = libhal_device_get_property_string(hal_ctx, udi, name, NULL); |
| 78 | LogMessageVerb(X_INFO, 10, "config/hal: getting %s on %s returned %s\n", |
| 79 | name, udi, prop ? prop : "(null)"); |
| 80 | if (prop) { |
| 81 | ret = strdup(prop); |
| 82 | libhal_free_string(prop); |
| 83 | } |
| 84 | else { |
| 85 | return NULL; |
| 86 | } |
| 87 | |
| 88 | return ret; |
| 89 | } |
| 90 | |
| 91 | static char * |
| 92 | get_prop_string_array(LibHalContext * hal_ctx, const char *udi, |
| 93 | const char *prop) |
| 94 | { |
| 95 | char **props, *ret, *str; |
| 96 | int i, len = 0; |
| 97 | |
| 98 | props = libhal_device_get_property_strlist(hal_ctx, udi, prop, NULL); |
| 99 | if (props) { |
| 100 | for (i = 0; props[i]; i++) |
| 101 | len += strlen(props[i]); |
| 102 | |
| 103 | ret = calloc(sizeof(char), len + i); /* i - 1 commas, 1 NULL */ |
| 104 | if (!ret) { |
| 105 | libhal_free_string_array(props); |
| 106 | return NULL; |
| 107 | } |
| 108 | |
| 109 | str = ret; |
| 110 | for (i = 0; props[i]; i++) { |
| 111 | strcpy(str, props[i]); |
| 112 | str += strlen(props[i]); |
| 113 | *str++ = ','; |
| 114 | } |
| 115 | *(str - 1) = '\0'; |
| 116 | |
| 117 | libhal_free_string_array(props); |
| 118 | } |
| 119 | else { |
| 120 | return NULL; |
| 121 | } |
| 122 | |
| 123 | return ret; |
| 124 | } |
| 125 | |
| 126 | static void |
| 127 | device_added(LibHalContext * hal_ctx, const char *udi) |
| 128 | { |
| 129 | char *path = NULL, *driver = NULL, *name = NULL, *config_info = NULL; |
| 130 | char *hal_tags, *parent; |
| 131 | InputOption *input_options = NULL; |
| 132 | InputAttributes attrs = { 0 }; |
| 133 | DeviceIntPtr dev = NULL; |
| 134 | DBusError error; |
| 135 | struct xkb_options xkb_opts = { 0 }; |
| 136 | int rc; |
| 137 | |
| 138 | LibHalPropertySet *set = NULL; |
| 139 | LibHalPropertySetIterator set_iter; |
| 140 | char *psi_key = NULL, *tmp_val; |
| 141 | |
| 142 | dbus_error_init(&error); |
| 143 | |
| 144 | driver = get_prop_string(hal_ctx, udi, "input.x11_driver"); |
| 145 | if (!driver) { |
| 146 | /* verbose, don't tell the user unless they _want_ to see it */ |
| 147 | LogMessageVerb(X_INFO, 7, |
| 148 | "config/hal: no driver specified for device %s\n", udi); |
| 149 | goto unwind; |
| 150 | } |
| 151 | |
| 152 | path = get_prop_string(hal_ctx, udi, "input.device"); |
| 153 | if (!path) { |
| 154 | LogMessage(X_WARNING, |
| 155 | "config/hal: no driver or path specified for %s\n", udi); |
| 156 | goto unwind; |
| 157 | } |
| 158 | attrs.device = strdup(path); |
| 159 | |
| 160 | name = get_prop_string(hal_ctx, udi, "info.product"); |
| 161 | if (!name) |
| 162 | name = strdup("(unnamed)"); |
| 163 | else |
| 164 | attrs.product = strdup(name); |
| 165 | |
| 166 | attrs.vendor = get_prop_string(hal_ctx, udi, "info.vendor"); |
| 167 | hal_tags = get_prop_string(hal_ctx, udi, "input.tags"); |
| 168 | attrs.tags = xstrtokenize(hal_tags, ","); |
| 169 | free(hal_tags); |
| 170 | |
| 171 | if (libhal_device_query_capability(hal_ctx, udi, "input.keys", NULL)) |
| 172 | attrs.flags |= ATTR_KEYBOARD; |
| 173 | if (libhal_device_query_capability(hal_ctx, udi, "input.mouse", NULL)) |
| 174 | attrs.flags |= ATTR_POINTER; |
| 175 | if (libhal_device_query_capability(hal_ctx, udi, "input.joystick", NULL)) |
| 176 | attrs.flags |= ATTR_JOYSTICK; |
| 177 | if (libhal_device_query_capability(hal_ctx, udi, "input.tablet", NULL)) |
| 178 | attrs.flags |= ATTR_TABLET; |
| 179 | if (libhal_device_query_capability(hal_ctx, udi, "input.touchpad", NULL)) |
| 180 | attrs.flags |= ATTR_TOUCHPAD; |
| 181 | if (libhal_device_query_capability(hal_ctx, udi, "input.touchscreen", NULL)) |
| 182 | attrs.flags |= ATTR_TOUCHSCREEN; |
| 183 | |
| 184 | parent = get_prop_string(hal_ctx, udi, "info.parent"); |
| 185 | if (parent) { |
| 186 | int usb_vendor, usb_product; |
| 187 | char *old_parent; |
| 188 | |
| 189 | /* construct USB ID in lowercase - "0000:ffff" */ |
| 190 | usb_vendor = libhal_device_get_property_int(hal_ctx, parent, |
| 191 | "usb.vendor_id", NULL); |
| 192 | LogMessageVerb(X_INFO, 10, |
| 193 | "config/hal: getting usb.vendor_id on %s " |
| 194 | "returned %04x\n", parent, usb_vendor); |
| 195 | usb_product = libhal_device_get_property_int(hal_ctx, parent, |
| 196 | "usb.product_id", NULL); |
| 197 | LogMessageVerb(X_INFO, 10, |
| 198 | "config/hal: getting usb.product_id on %s " |
| 199 | "returned %04x\n", parent, usb_product); |
| 200 | if (usb_vendor && usb_product) |
| 201 | if (asprintf(&attrs.usb_id, "%04x:%04x", usb_vendor, usb_product) |
| 202 | == -1) |
| 203 | attrs.usb_id = NULL; |
| 204 | |
| 205 | attrs.pnp_id = get_prop_string(hal_ctx, parent, "pnp.id"); |
| 206 | old_parent = parent; |
| 207 | |
| 208 | while (!attrs.pnp_id && |
| 209 | (parent = get_prop_string(hal_ctx, parent, "info.parent"))) { |
| 210 | attrs.pnp_id = get_prop_string(hal_ctx, parent, "pnp.id"); |
| 211 | |
| 212 | free(old_parent); |
| 213 | old_parent = parent; |
| 214 | } |
| 215 | |
| 216 | free(old_parent); |
| 217 | } |
| 218 | |
| 219 | input_options = input_option_new(NULL, "_source", "server/hal"); |
| 220 | if (!input_options) { |
| 221 | LogMessage(X_ERROR, |
| 222 | "config/hal: couldn't allocate first key/value pair\n"); |
| 223 | goto unwind; |
| 224 | } |
| 225 | |
| 226 | /* most drivers use device.. not path. evdev uses both however, but the |
| 227 | * path version isn't documented apparently. support both for now. */ |
| 228 | input_options = input_option_new(input_options, "path", path); |
| 229 | input_options = input_option_new(input_options, "device", path); |
| 230 | |
| 231 | input_options = input_option_new(input_options, "driver", driver); |
| 232 | input_options = input_option_new(input_options, "name", name); |
| 233 | |
| 234 | if (asprintf(&config_info, "hal:%s", udi) == -1) { |
| 235 | config_info = NULL; |
| 236 | LogMessage(X_ERROR, "config/hal: couldn't allocate name\n"); |
| 237 | goto unwind; |
| 238 | } |
| 239 | |
| 240 | /* Check for duplicate devices */ |
| 241 | if (device_is_duplicate(config_info)) { |
| 242 | LogMessage(X_WARNING, |
| 243 | "config/hal: device %s already added. Ignoring.\n", name); |
| 244 | goto unwind; |
| 245 | } |
| 246 | |
| 247 | /* ok, grab options from hal.. iterate through all properties |
| 248 | * and lets see if any of them are options that we can add */ |
| 249 | set = libhal_device_get_all_properties(hal_ctx, udi, &error); |
| 250 | |
| 251 | if (!set) { |
| 252 | LogMessage(X_ERROR, |
| 253 | "config/hal: couldn't get property list for %s: %s (%s)\n", |
| 254 | udi, error.name, error.message); |
| 255 | goto unwind; |
| 256 | } |
| 257 | |
| 258 | libhal_psi_init(&set_iter, set); |
| 259 | while (libhal_psi_has_more(&set_iter)) { |
| 260 | /* we are looking for supported keys.. extract and add to options */ |
| 261 | psi_key = libhal_psi_get_key(&set_iter); |
| 262 | |
| 263 | if (psi_key) { |
| 264 | |
| 265 | /* normal options first (input.x11_options.<propname>) */ |
| 266 | if (!strncasecmp |
| 267 | (psi_key, LIBHAL_PROP_KEY, sizeof(LIBHAL_PROP_KEY) - 1)) { |
| 268 | char *tmp; |
| 269 | |
| 270 | /* only support strings for all values */ |
| 271 | tmp_val = get_prop_string(hal_ctx, udi, psi_key); |
| 272 | |
| 273 | if (tmp_val) { |
| 274 | |
| 275 | /* xkb needs special handling. HAL specs include |
| 276 | * input.xkb.xyz options, but the x11-input.fdi specifies |
| 277 | * input.x11_options.Xkbxyz options. By default, we use |
| 278 | * the former, unless the specific X11 ones are specified. |
| 279 | * Since we can't predict the order in which the keys |
| 280 | * arrive, we need to store them. |
| 281 | */ |
| 282 | if ((tmp = strcasestr(psi_key, "xkb")) && strlen(tmp) >= 4) { |
| 283 | if (!strcasecmp(&tmp[3], "layout")) { |
| 284 | free(xkb_opts.layout); |
| 285 | xkb_opts.layout = strdup(tmp_val); |
| 286 | } |
| 287 | else if (!strcasecmp(&tmp[3], "model")) { |
| 288 | free(xkb_opts.model); |
| 289 | xkb_opts.model = strdup(tmp_val); |
| 290 | } |
| 291 | else if (!strcasecmp(&tmp[3], "rules")) { |
| 292 | free(xkb_opts.rules); |
| 293 | xkb_opts.rules = strdup(tmp_val); |
| 294 | } |
| 295 | else if (!strcasecmp(&tmp[3], "variant")) { |
| 296 | free(xkb_opts.variant); |
| 297 | xkb_opts.variant = strdup(tmp_val); |
| 298 | } |
| 299 | else if (!strcasecmp(&tmp[3], "options")) { |
| 300 | free(xkb_opts.options); |
| 301 | xkb_opts.options = strdup(tmp_val); |
| 302 | } |
| 303 | } |
| 304 | else { |
| 305 | /* all others */ |
| 306 | input_options = |
| 307 | input_option_new(input_options, |
| 308 | psi_key + sizeof(LIBHAL_PROP_KEY) - |
| 309 | 1, tmp_val); |
| 310 | free(tmp_val); |
| 311 | } |
| 312 | } |
| 313 | else { |
| 314 | /* server 1.4 had xkb_options as strlist. */ |
| 315 | if ((tmp = strcasestr(psi_key, "xkb")) && |
| 316 | (strlen(tmp) >= 4) && |
| 317 | (!strcasecmp(&tmp[3], "options")) && |
| 318 | (tmp_val = |
| 319 | get_prop_string_array(hal_ctx, udi, psi_key))) { |
| 320 | free(xkb_opts.options); |
| 321 | xkb_opts.options = strdup(tmp_val); |
| 322 | } |
| 323 | } |
| 324 | } |
| 325 | else if (!strncasecmp |
| 326 | (psi_key, LIBHAL_XKB_PROP_KEY, |
| 327 | sizeof(LIBHAL_XKB_PROP_KEY) - 1)) { |
| 328 | char *tmp; |
| 329 | |
| 330 | /* only support strings for all values */ |
| 331 | tmp_val = get_prop_string(hal_ctx, udi, psi_key); |
| 332 | |
| 333 | if (tmp_val && strlen(psi_key) >= sizeof(LIBHAL_XKB_PROP_KEY)) { |
| 334 | |
| 335 | tmp = &psi_key[sizeof(LIBHAL_XKB_PROP_KEY) - 1]; |
| 336 | |
| 337 | if (!strcasecmp(tmp, "layout")) { |
| 338 | if (!xkb_opts.layout) |
| 339 | xkb_opts.layout = strdup(tmp_val); |
| 340 | } |
| 341 | else if (!strcasecmp(tmp, "rules")) { |
| 342 | if (!xkb_opts.rules) |
| 343 | xkb_opts.rules = strdup(tmp_val); |
| 344 | } |
| 345 | else if (!strcasecmp(tmp, "variant")) { |
| 346 | if (!xkb_opts.variant) |
| 347 | xkb_opts.variant = strdup(tmp_val); |
| 348 | } |
| 349 | else if (!strcasecmp(tmp, "model")) { |
| 350 | if (!xkb_opts.model) |
| 351 | xkb_opts.model = strdup(tmp_val); |
| 352 | } |
| 353 | else if (!strcasecmp(tmp, "options")) { |
| 354 | if (!xkb_opts.options) |
| 355 | xkb_opts.options = strdup(tmp_val); |
| 356 | } |
| 357 | free(tmp_val); |
| 358 | } |
| 359 | else { |
| 360 | /* server 1.4 had xkb options as strlist */ |
| 361 | tmp_val = get_prop_string_array(hal_ctx, udi, psi_key); |
| 362 | if (tmp_val && |
| 363 | strlen(psi_key) >= sizeof(LIBHAL_XKB_PROP_KEY)) { |
| 364 | tmp = &psi_key[sizeof(LIBHAL_XKB_PROP_KEY) - 1]; |
| 365 | if (!strcasecmp(tmp, ".options") && (!xkb_opts.options)) |
| 366 | xkb_opts.options = strdup(tmp_val); |
| 367 | } |
| 368 | free(tmp_val); |
| 369 | } |
| 370 | } |
| 371 | } |
| 372 | |
| 373 | /* psi_key doesn't need to be freed */ |
| 374 | libhal_psi_next(&set_iter); |
| 375 | } |
| 376 | |
| 377 | /* Now add xkb options */ |
| 378 | if (xkb_opts.layout) |
| 379 | input_options = |
| 380 | input_option_new(input_options, "xkb_layout", xkb_opts.layout); |
| 381 | if (xkb_opts.rules) |
| 382 | input_options = |
| 383 | input_option_new(input_options, "xkb_rules", xkb_opts.rules); |
| 384 | if (xkb_opts.variant) |
| 385 | input_options = |
| 386 | input_option_new(input_options, "xkb_variant", xkb_opts.variant); |
| 387 | if (xkb_opts.model) |
| 388 | input_options = |
| 389 | input_option_new(input_options, "xkb_model", xkb_opts.model); |
| 390 | if (xkb_opts.options) |
| 391 | input_options = |
| 392 | input_option_new(input_options, "xkb_options", xkb_opts.options); |
| 393 | input_options = input_option_new(input_options, "config_info", config_info); |
| 394 | |
| 395 | /* this isn't an error, but how else do you output something that the user can see? */ |
| 396 | LogMessage(X_INFO, "config/hal: Adding input device %s\n", name); |
| 397 | if ((rc = NewInputDeviceRequest(input_options, &attrs, &dev)) != Success) { |
| 398 | LogMessage(X_ERROR, "config/hal: NewInputDeviceRequest failed (%d)\n", |
| 399 | rc); |
| 400 | dev = NULL; |
| 401 | goto unwind; |
| 402 | } |
| 403 | |
| 404 | unwind: |
| 405 | if (set) |
| 406 | libhal_free_property_set(set); |
| 407 | free(path); |
| 408 | free(driver); |
| 409 | free(name); |
| 410 | free(config_info); |
| 411 | input_option_free_list(&input_options); |
| 412 | |
| 413 | free(attrs.product); |
| 414 | free(attrs.vendor); |
| 415 | free(attrs.device); |
| 416 | free(attrs.pnp_id); |
| 417 | free(attrs.usb_id); |
| 418 | if (attrs.tags) { |
| 419 | char **tag = attrs.tags; |
| 420 | |
| 421 | while (*tag) { |
| 422 | free(*tag); |
| 423 | tag++; |
| 424 | } |
| 425 | free(attrs.tags); |
| 426 | } |
| 427 | |
| 428 | free(xkb_opts.layout); |
| 429 | free(xkb_opts.rules); |
| 430 | free(xkb_opts.model); |
| 431 | free(xkb_opts.variant); |
| 432 | free(xkb_opts.options); |
| 433 | |
| 434 | dbus_error_free(&error); |
| 435 | |
| 436 | return; |
| 437 | } |
| 438 | |
| 439 | static void |
| 440 | disconnect_hook(void *data) |
| 441 | { |
| 442 | DBusError error; |
| 443 | struct config_hal_info *info = data; |
| 444 | |
| 445 | if (info->hal_ctx) { |
| 446 | if (dbus_connection_get_is_connected(info->system_bus)) { |
| 447 | dbus_error_init(&error); |
| 448 | if (!libhal_ctx_shutdown(info->hal_ctx, &error)) |
| 449 | LogMessage(X_WARNING, |
| 450 | "config/hal: disconnect_hook couldn't shut down context: %s (%s)\n", |
| 451 | error.name, error.message); |
| 452 | dbus_error_free(&error); |
| 453 | } |
| 454 | libhal_ctx_free(info->hal_ctx); |
| 455 | } |
| 456 | |
| 457 | info->hal_ctx = NULL; |
| 458 | info->system_bus = NULL; |
| 459 | } |
| 460 | |
| 461 | static BOOL |
| 462 | connect_and_register(DBusConnection * connection, struct config_hal_info *info) |
| 463 | { |
| 464 | DBusError error; |
| 465 | char **devices; |
| 466 | int num_devices, i; |
| 467 | |
| 468 | if (info->hal_ctx) |
| 469 | return TRUE; /* already registered, pretend we did something */ |
| 470 | |
| 471 | info->system_bus = connection; |
| 472 | |
| 473 | dbus_error_init(&error); |
| 474 | |
| 475 | info->hal_ctx = libhal_ctx_new(); |
| 476 | if (!info->hal_ctx) { |
| 477 | LogMessage(X_ERROR, "config/hal: couldn't create HAL context\n"); |
| 478 | goto out_err; |
| 479 | } |
| 480 | |
| 481 | if (!libhal_ctx_set_dbus_connection(info->hal_ctx, info->system_bus)) { |
| 482 | LogMessage(X_ERROR, |
| 483 | "config/hal: couldn't associate HAL context with bus\n"); |
| 484 | goto out_err; |
| 485 | } |
| 486 | if (!libhal_ctx_init(info->hal_ctx, &error)) { |
| 487 | LogMessage(X_ERROR, |
| 488 | "config/hal: couldn't initialise context: %s (%s)\n", |
| 489 | error.name ? error.name : "unknown error", |
| 490 | error.message ? error.message : "null"); |
| 491 | goto out_err; |
| 492 | } |
| 493 | if (!libhal_device_property_watch_all(info->hal_ctx, &error)) { |
| 494 | LogMessage(X_ERROR, |
| 495 | "config/hal: couldn't watch all properties: %s (%s)\n", |
| 496 | error.name ? error.name : "unknown error", |
| 497 | error.message ? error.message : "null"); |
| 498 | goto out_ctx; |
| 499 | } |
| 500 | libhal_ctx_set_device_added(info->hal_ctx, device_added); |
| 501 | libhal_ctx_set_device_removed(info->hal_ctx, device_removed); |
| 502 | |
| 503 | devices = libhal_find_device_by_capability(info->hal_ctx, "input", |
| 504 | &num_devices, &error); |
| 505 | /* FIXME: Get default devices if error is set. */ |
| 506 | if (dbus_error_is_set(&error)) { |
| 507 | LogMessage(X_ERROR, "config/hal: couldn't find input device: %s (%s)\n", |
| 508 | error.name ? error.name : "unknown error", |
| 509 | error.message ? error.message : "null"); |
| 510 | goto out_ctx; |
| 511 | } |
| 512 | for (i = 0; i < num_devices; i++) |
| 513 | device_added(info->hal_ctx, devices[i]); |
| 514 | libhal_free_string_array(devices); |
| 515 | |
| 516 | dbus_error_free(&error); |
| 517 | |
| 518 | return TRUE; |
| 519 | |
| 520 | out_ctx: |
| 521 | dbus_error_free(&error); |
| 522 | |
| 523 | if (!libhal_ctx_shutdown(info->hal_ctx, &error)) { |
| 524 | LogMessage(X_WARNING, |
| 525 | "config/hal: couldn't shut down context: %s (%s)\n", |
| 526 | error.name ? error.name : "unknown error", |
| 527 | error.message ? error.message : "null"); |
| 528 | dbus_error_free(&error); |
| 529 | } |
| 530 | |
| 531 | out_err: |
| 532 | dbus_error_free(&error); |
| 533 | |
| 534 | if (info->hal_ctx) { |
| 535 | libhal_ctx_free(info->hal_ctx); |
| 536 | } |
| 537 | |
| 538 | info->hal_ctx = NULL; |
| 539 | info->system_bus = NULL; |
| 540 | |
| 541 | return FALSE; |
| 542 | } |
| 543 | |
| 544 | /** |
| 545 | * Handle NewOwnerChanged signals to deal with HAL startup at X server runtime. |
| 546 | * |
| 547 | * NewOwnerChanged is send once when HAL shuts down, and once again when it |
| 548 | * comes back up. Message has three arguments, first is the name |
| 549 | * (org.freedesktop.Hal), the second one is the old owner, third one is new |
| 550 | * owner. |
| 551 | */ |
| 552 | static DBusHandlerResult |
| 553 | ownerchanged_handler(DBusConnection * connection, DBusMessage * message, |
| 554 | void *data) |
| 555 | { |
| 556 | int ret = DBUS_HANDLER_RESULT_NOT_YET_HANDLED; |
| 557 | |
| 558 | if (dbus_message_is_signal(message, |
| 559 | "org.freedesktop.DBus", "NameOwnerChanged")) { |
| 560 | DBusError error; |
| 561 | char *name, *old_owner, *new_owner; |
| 562 | |
| 563 | dbus_error_init(&error); |
| 564 | dbus_message_get_args(message, &error, |
| 565 | DBUS_TYPE_STRING, &name, |
| 566 | DBUS_TYPE_STRING, &old_owner, |
| 567 | DBUS_TYPE_STRING, &new_owner, DBUS_TYPE_INVALID); |
| 568 | |
| 569 | if (dbus_error_is_set(&error)) { |
| 570 | ErrorF |
| 571 | ("[config/hal] failed to get NameOwnerChanged args: %s (%s)\n", |
| 572 | error.name, error.message); |
| 573 | } |
| 574 | else if (name && strcmp(name, "org.freedesktop.Hal") == 0) { |
| 575 | |
| 576 | if (!old_owner || !strlen(old_owner)) { |
| 577 | DebugF("[config/hal] HAL startup detected.\n"); |
| 578 | if (connect_and_register |
| 579 | (connection, (struct config_hal_info *) data)) |
| 580 | dbus_connection_unregister_object_path(connection, |
| 581 | "/org/freedesktop/DBus"); |
| 582 | else |
| 583 | ErrorF("[config/hal] Failed to connect to HAL bus.\n"); |
| 584 | } |
| 585 | |
| 586 | ret = DBUS_HANDLER_RESULT_HANDLED; |
| 587 | } |
| 588 | dbus_error_free(&error); |
| 589 | } |
| 590 | |
| 591 | return ret; |
| 592 | } |
| 593 | |
| 594 | /** |
| 595 | * Register a handler for the NameOwnerChanged signal. |
| 596 | */ |
| 597 | static BOOL |
| 598 | listen_for_startup(DBusConnection * connection, void *data) |
| 599 | { |
| 600 | DBusObjectPathVTable vtable = {.message_function = ownerchanged_handler, }; |
| 601 | DBusError error; |
| 602 | const char MATCH_RULE[] = "sender='org.freedesktop.DBus'," |
| 603 | "interface='org.freedesktop.DBus'," |
| 604 | "type='signal'," |
| 605 | "path='/org/freedesktop/DBus'," "member='NameOwnerChanged'"; |
| 606 | int rc = FALSE; |
| 607 | |
| 608 | dbus_error_init(&error); |
| 609 | dbus_bus_add_match(connection, MATCH_RULE, &error); |
| 610 | if (!dbus_error_is_set(&error)) { |
| 611 | if (dbus_connection_register_object_path(connection, |
| 612 | "/org/freedesktop/DBus", |
| 613 | &vtable, data)) |
| 614 | rc = TRUE; |
| 615 | else |
| 616 | ErrorF("[config/hal] cannot register object path.\n"); |
| 617 | } |
| 618 | else { |
| 619 | ErrorF("[config/hal] couldn't add match rule: %s (%s)\n", error.name, |
| 620 | error.message); |
| 621 | ErrorF("[config/hal] cannot detect a HAL startup.\n"); |
| 622 | } |
| 623 | |
| 624 | dbus_error_free(&error); |
| 625 | |
| 626 | return rc; |
| 627 | } |
| 628 | |
| 629 | static void |
| 630 | connect_hook(DBusConnection * connection, void *data) |
| 631 | { |
| 632 | struct config_hal_info *info = data; |
| 633 | |
| 634 | if (listen_for_startup(connection, data) && |
| 635 | connect_and_register(connection, info)) |
| 636 | dbus_connection_unregister_object_path(connection, |
| 637 | "/org/freedesktop/DBus"); |
| 638 | |
| 639 | return; |
| 640 | } |
| 641 | |
| 642 | static struct config_hal_info hal_info; |
| 643 | |
| 644 | static struct config_dbus_core_hook hook = { |
| 645 | .connect = connect_hook, |
| 646 | .disconnect = disconnect_hook, |
| 647 | .data = &hal_info, |
| 648 | }; |
| 649 | |
| 650 | int |
| 651 | config_hal_init(void) |
| 652 | { |
| 653 | memset(&hal_info, 0, sizeof(hal_info)); |
| 654 | hal_info.system_bus = NULL; |
| 655 | hal_info.hal_ctx = NULL; |
| 656 | |
| 657 | if (!config_dbus_core_add_hook(&hook)) { |
| 658 | LogMessage(X_ERROR, "config/hal: failed to add D-Bus hook\n"); |
| 659 | return 0; |
| 660 | } |
| 661 | |
| 662 | /* verbose message */ |
| 663 | LogMessageVerb(X_INFO, 7, "config/hal: initialized\n"); |
| 664 | |
| 665 | return 1; |
| 666 | } |
| 667 | |
| 668 | void |
| 669 | config_hal_fini(void) |
| 670 | { |
| 671 | config_dbus_core_remove_hook(&hook); |
| 672 | } |