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a09e091a JB |
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 | } |