514 lines
15 KiB
C
514 lines
15 KiB
C
/*
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* Copyright © 2007 Daniel Stone
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Author: Daniel Stone <daniel@fooishbar.org>
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include <dbus/dbus.h>
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#include <hal/libhal.h>
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#include <string.h>
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#include <sys/select.h>
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#include "input.h"
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#include "inputstr.h"
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#include "hotplug.h"
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#include "config-backends.h"
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#include "os.h"
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#define LIBHAL_PROP_KEY "input.x11_options."
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#define LIBHAL_XKB_PROP_KEY "input.xkb."
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struct config_hal_info {
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DBusConnection *system_bus;
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LibHalContext *hal_ctx;
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};
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/* Used for special handling of xkb options. */
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struct xkb_options {
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char* layout;
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char* model;
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char* rules;
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char* variant;
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};
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static void
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remove_device(DeviceIntPtr dev)
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{
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/* this only gets called for devices that have already been added */
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LogMessage(X_INFO, "config/hal: removing device %s\n", dev->name);
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/* Call PIE here so we don't try to dereference a device that's
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* already been removed. */
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OsBlockSignals();
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ProcessInputEvents();
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DeleteInputDeviceRequest(dev);
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OsReleaseSignals();
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}
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static void
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device_removed(LibHalContext *ctx, const char *udi)
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{
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DeviceIntPtr dev, next;
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char *value;
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value = xalloc(strlen(udi) + 5); /* "hal:" + NULL */
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if (!value)
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return;
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sprintf(value, "hal:%s", udi);
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for (dev = inputInfo.devices; dev; dev = next) {
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next = dev->next;
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if (dev->config_info && strcmp(dev->config_info, value) == 0)
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remove_device(dev);
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}
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for (dev = inputInfo.off_devices; dev; dev = next) {
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next = dev->next;
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if (dev->config_info && strcmp(dev->config_info, value) == 0)
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remove_device(dev);
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}
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xfree(value);
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}
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static void
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add_option(InputOption **options, const char *key, const char *value)
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{
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if (!value || *value == '\0')
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return;
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for (; *options; options = &(*options)->next)
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;
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*options = xcalloc(sizeof(**options), 1);
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if (!*options) /* Yeesh. */
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return;
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(*options)->key = xstrdup(key);
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(*options)->value = xstrdup(value);
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(*options)->next = NULL;
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}
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static char *
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get_prop_string(LibHalContext *hal_ctx, const char *udi, const char *name)
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{
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char *prop, *ret;
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prop = libhal_device_get_property_string(hal_ctx, udi, name, NULL);
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LogMessageVerb(X_INFO, 10, "config/hal: getting %s on %s returned %s\n", name, udi, prop);
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if (prop) {
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ret = xstrdup(prop);
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libhal_free_string(prop);
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}
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else {
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return NULL;
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}
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return ret;
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}
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/* this function is no longer used... keep it here in case its needed in
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* the future. */
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#if 0
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static char *
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get_prop_string_array(LibHalContext *hal_ctx, const char *udi, const char *prop)
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{
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char **props, *ret, *str;
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int i, len = 0;
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props = libhal_device_get_property_strlist(hal_ctx, udi, prop, NULL);
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if (props) {
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for (i = 0; props[i]; i++)
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len += strlen(props[i]);
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ret = xcalloc(sizeof(char), len + i); /* i - 1 commas, 1 NULL */
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if (!ret) {
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libhal_free_string_array(props);
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return NULL;
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}
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str = ret;
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for (i = 0; props[i]; i++) {
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strcpy(str, props[i]);
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str += strlen(props[i]);
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*str++ = ',';
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}
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*(str-1) = '\0';
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libhal_free_string_array(props);
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}
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else {
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return NULL;
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}
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return ret;
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}
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#endif
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static void
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device_added(LibHalContext *hal_ctx, const char *udi)
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{
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char *path = NULL, *driver = NULL, *name = NULL, *config_info = NULL;
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InputOption *options = NULL, *tmpo = NULL;
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DeviceIntPtr dev = NULL;
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DBusError error;
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struct xkb_options xkb_opts = {0};
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LibHalPropertySet *set = NULL;
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LibHalPropertySetIterator set_iter;
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char *psi_key = NULL, *tmp_val;
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dbus_error_init(&error);
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driver = get_prop_string(hal_ctx, udi, "input.x11_driver");
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if (!driver){
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/* verbose, don't tell the user unless they _want_ to see it */
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LogMessageVerb(X_INFO,7,"config/hal: no driver specified for device %s\n", udi);
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goto unwind;
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}
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path = get_prop_string(hal_ctx, udi, "input.device");
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if (!path) {
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LogMessage(X_WARNING,"config/hal: no driver or path specified for %s\n", udi);
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goto unwind;
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}
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name = get_prop_string(hal_ctx, udi, "info.product");
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if (!name)
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name = xstrdup("(unnamed)");
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options = xcalloc(sizeof(*options), 1);
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if (!options){
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LogMessage(X_ERROR, "config/hal: couldn't allocate space for input options!\n");
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goto unwind;
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}
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options->key = xstrdup("_source");
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options->value = xstrdup("server/hal");
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if (!options->key || !options->value) {
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LogMessage(X_ERROR, "config/hal: couldn't allocate first key/value pair\n");
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goto unwind;
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}
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/* most drivers use device.. not path. evdev uses both however, but the
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* path version isn't documented apparently. support both for now. */
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add_option(&options, "path", path);
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add_option(&options, "device", path);
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add_option(&options, "driver", driver);
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add_option(&options, "name", name);
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config_info = xalloc(strlen(udi) + 5); /* "hal:" and NULL */
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if (!config_info) {
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LogMessage(X_ERROR, "config/hal: couldn't allocate name\n");
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goto unwind;
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}
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sprintf(config_info, "hal:%s", udi);
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/* ok, grab options from hal.. iterate through all properties
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* and lets see if any of them are options that we can add */
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set = libhal_device_get_all_properties(hal_ctx, udi, &error);
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if (!set) {
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LogMessage(X_ERROR, "config/hal: couldn't get property list for %s: %s (%s)\n",
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udi, error.name, error.message);
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goto unwind;
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}
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libhal_psi_init(&set_iter,set);
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while (libhal_psi_has_more(&set_iter)) {
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/* we are looking for supported keys.. extract and add to options */
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psi_key = libhal_psi_get_key(&set_iter);
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if (psi_key){
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/* normal options first (input.x11_options.<propname>) */
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if (!strncasecmp(psi_key, LIBHAL_PROP_KEY, sizeof(LIBHAL_PROP_KEY)-1)){
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/* only support strings for all values */
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tmp_val = get_prop_string(hal_ctx, udi, psi_key);
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if (tmp_val){
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char* tmp;
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/* xkb needs special handling. HAL specs include
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* input.xkb.xyz options, but the x11-input.fdi specifies
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* input.x11_options.Xkbxyz options. By default, we use
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* the former, unless the specific X11 ones are specified.
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* Since we can't predict the order in which the keys
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* arrive, we need to store them.
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*/
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#ifndef HAVE_STRCASESTR
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int psi_key_len = strlen(psi_key);
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char *lower_psi_key = xalloc(psi_key_len + 1);
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CopyISOLatin1Lowered((unsigned char *) lower_psi_key,
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(unsigned char *) psi_key,
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psi_key_len);
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if ((tmp = strstr(lower_psi_key, "xkb")))
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#else
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if ((tmp = strcasestr(psi_key, "xkb")))
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#endif
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{
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if (!strcasecmp(&tmp[3], "layout"))
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{
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if (xkb_opts.layout)
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xfree(xkb_opts.layout);
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xkb_opts.layout = strdup(tmp_val);
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} else if (!strcasecmp(&tmp[3], "model"))
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{
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if (xkb_opts.model)
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xfree(xkb_opts.model);
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xkb_opts.model = strdup(tmp_val);
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} else if (!strcasecmp(&tmp[3], "rules"))
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{
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if (xkb_opts.rules)
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xfree(xkb_opts.rules);
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xkb_opts.rules = strdup(tmp_val);
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} else if (!strcasecmp(&tmp[3], "variant"))
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{
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if (xkb_opts.variant)
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xfree(xkb_opts.variant);
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xkb_opts.variant = strdup(tmp_val);
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}
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} else
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{
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/* all others */
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add_option(&options, psi_key + sizeof(LIBHAL_PROP_KEY)-1, tmp_val);
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xfree(tmp_val);
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}
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#ifndef HAVE_STRCASESTR
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xfree(lower_psi_key);
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#endif
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}
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} else if (!strncasecmp(psi_key, LIBHAL_XKB_PROP_KEY, sizeof(LIBHAL_XKB_PROP_KEY)-1)){
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/* only support strings for all values */
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tmp_val = get_prop_string(hal_ctx, udi, psi_key);
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if (tmp_val){
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char* tmp;
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tmp = &psi_key[sizeof(LIBHAL_XKB_PROP_KEY) - 1];
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if (!strcasecmp(tmp, "layout"))
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{
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if (!xkb_opts.layout)
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xkb_opts.layout = strdup(tmp_val);
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} else if (!strcasecmp(tmp, "rules"))
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{
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if (!xkb_opts.rules)
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xkb_opts.rules = strdup(tmp_val);
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} else if (!strcasecmp(tmp, "variant"))
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{
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if (!xkb_opts.variant)
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xkb_opts.variant = strdup(tmp_val);
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} else if (!strcasecmp(tmp, "model"))
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{
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if (!xkb_opts.model)
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xkb_opts.model = strdup(tmp_val);
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}
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xfree(tmp_val);
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}
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}
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}
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/* psi_key doesn't need to be freed */
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libhal_psi_next(&set_iter);
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}
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/* Now add xkb options */
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if (xkb_opts.layout)
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add_option(&options, "xkb_layout", xkb_opts.layout);
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if (xkb_opts.rules)
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add_option(&options, "xkb_rules", xkb_opts.rules);
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if (xkb_opts.variant)
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add_option(&options, "xkb_variant", xkb_opts.variant);
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if (xkb_opts.model)
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add_option(&options, "xkb_model", xkb_opts.model);
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/* this isn't an error, but how else do you output something that the user can see? */
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LogMessage(X_INFO, "config/hal: Adding input device %s\n", name);
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if (NewInputDeviceRequest(options, &dev) != Success) {
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LogMessage(X_ERROR, "config/hal: NewInputDeviceRequest failed\n");
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dev = NULL;
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goto unwind;
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}
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for (; dev; dev = dev->next){
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if (dev->config_info)
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xfree(dev->config_info);
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dev->config_info = xstrdup(config_info);
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}
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unwind:
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if (set)
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libhal_free_property_set(set);
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if (path)
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xfree(path);
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if (driver)
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xfree(driver);
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if (name)
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xfree(name);
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if (config_info)
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xfree(config_info);
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while (!dev && (tmpo = options)) {
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options = tmpo->next;
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xfree(tmpo->key);
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xfree(tmpo->value);
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xfree(tmpo);
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}
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if (xkb_opts.layout)
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xfree(xkb_opts.layout);
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if (xkb_opts.rules)
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xfree(xkb_opts.rules);
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if (xkb_opts.model)
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xfree(xkb_opts.model);
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if (xkb_opts.variant)
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xfree(xkb_opts.variant);
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dbus_error_free(&error);
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return;
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}
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static void
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disconnect_hook(void *data)
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{
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DBusError error;
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struct config_hal_info *info = data;
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if (info->hal_ctx) {
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if (dbus_connection_get_is_connected(info->system_bus)) {
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dbus_error_init(&error);
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if (!libhal_ctx_shutdown(info->hal_ctx, &error))
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LogMessage(X_WARNING, "config/hal: disconnect_hook couldn't shut down context: %s (%s)\n",
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error.name, error.message);
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dbus_error_free(&error);
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}
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libhal_ctx_free(info->hal_ctx);
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}
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info->hal_ctx = NULL;
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info->system_bus = NULL;
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}
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static void
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connect_hook(DBusConnection *connection, void *data)
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{
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DBusError error;
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struct config_hal_info *info = data;
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char **devices;
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int num_devices, i;
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info->system_bus = connection;
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dbus_error_init(&error);
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if (!info->hal_ctx)
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info->hal_ctx = libhal_ctx_new();
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if (!info->hal_ctx) {
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LogMessage(X_ERROR, "config/hal: couldn't create HAL context\n");
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goto out_err;
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}
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if (!libhal_ctx_set_dbus_connection(info->hal_ctx, info->system_bus)) {
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LogMessage(X_ERROR, "config/hal: couldn't associate HAL context with bus\n");
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goto out_ctx;
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}
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if (!libhal_ctx_init(info->hal_ctx, &error)) {
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LogMessage(X_ERROR, "config/hal: couldn't initialise context: %s (%s)\n",
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error.name, error.message);
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goto out_ctx;
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}
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if (!libhal_device_property_watch_all(info->hal_ctx, &error)) {
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LogMessage(X_ERROR, "config/hal: couldn't watch all properties: %s (%s)\n",
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error.name, error.message);
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goto out_ctx2;
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}
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libhal_ctx_set_device_added(info->hal_ctx, device_added);
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libhal_ctx_set_device_removed(info->hal_ctx, device_removed);
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devices = libhal_find_device_by_capability(info->hal_ctx, "input",
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&num_devices, &error);
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/* FIXME: Get default devices if error is set. */
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for (i = 0; i < num_devices; i++)
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device_added(info->hal_ctx, devices[i]);
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libhal_free_string_array(devices);
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dbus_error_free(&error);
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return;
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out_ctx2:
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if (!libhal_ctx_shutdown(info->hal_ctx, &error))
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LogMessage(X_WARNING, "config/hal: couldn't shut down context: %s (%s)\n",
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error.name, error.message);
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out_ctx:
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libhal_ctx_free(info->hal_ctx);
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out_err:
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dbus_error_free(&error);
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info->hal_ctx = NULL;
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info->system_bus = NULL;
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return;
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}
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static struct config_hal_info hal_info;
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static struct config_dbus_core_hook hook = {
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.connect = connect_hook,
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.disconnect = disconnect_hook,
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.data = &hal_info,
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};
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int
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config_hal_init(void)
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{
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memset(&hal_info, 0, sizeof(hal_info));
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hal_info.system_bus = NULL;
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hal_info.hal_ctx = NULL;
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if (!config_dbus_core_add_hook(&hook)) {
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LogMessage(X_ERROR, "config/hal: failed to add D-Bus hook\n");
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return 0;
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}
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/* verbose message */
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LogMessageVerb(X_INFO,7,"config/hal: initialized");
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return 1;
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}
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void
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config_hal_fini(void)
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{
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config_dbus_core_remove_hook(&hook);
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}
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