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xenocara/xserver/config/hal.c

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/*
* Copyright © 2007 Daniel Stone
* Copyright © 2007 Red Hat, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Author: Daniel Stone <daniel@fooishbar.org>
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include <dbus/dbus.h>
#include <hal/libhal.h>
#include <string.h>
#include <sys/select.h>
#include "input.h"
#include "inputstr.h"
#include "hotplug.h"
#include "config-backends.h"
#include "os.h"
#define LIBHAL_PROP_KEY "input.x11_options."
#define LIBHAL_XKB_PROP_KEY "input.xkb."
struct config_hal_info {
DBusConnection *system_bus;
LibHalContext *hal_ctx;
};
/* Used for special handling of xkb options. */
struct xkb_options {
char* layout;
char* model;
char* rules;
char* variant;
char* options;
};
static void
remove_device(DeviceIntPtr dev)
{
/* this only gets called for devices that have already been added */
LogMessage(X_INFO, "config/hal: removing device %s\n", dev->name);
/* Call PIE here so we don't try to dereference a device that's
* already been removed. */
OsBlockSignals();
ProcessInputEvents();
DeleteInputDeviceRequest(dev);
OsReleaseSignals();
}
static void
device_removed(LibHalContext *ctx, const char *udi)
{
DeviceIntPtr dev, next;
char *value;
value = xalloc(strlen(udi) + 5); /* "hal:" + NULL */
if (!value)
return;
sprintf(value, "hal:%s", udi);
for (dev = inputInfo.devices; dev; dev = next) {
next = dev->next;
if (dev->config_info && strcmp(dev->config_info, value) == 0)
remove_device(dev);
}
for (dev = inputInfo.off_devices; dev; dev = next) {
next = dev->next;
if (dev->config_info && strcmp(dev->config_info, value) == 0)
remove_device(dev);
}
xfree(value);
}
static void
add_option(InputOption **options, const char *key, const char *value)
{
if (!value || *value == '\0')
return;
for (; *options; options = &(*options)->next)
;
*options = xcalloc(sizeof(**options), 1);
if (!*options) /* Yeesh. */
return;
(*options)->key = xstrdup(key);
(*options)->value = xstrdup(value);
(*options)->next = NULL;
}
static char *
get_prop_string(LibHalContext *hal_ctx, const char *udi, const char *name)
{
char *prop, *ret;
prop = libhal_device_get_property_string(hal_ctx, udi, name, NULL);
LogMessageVerb(X_INFO, 10, "config/hal: getting %s on %s returned %s\n", name, udi, prop);
if (prop) {
ret = xstrdup(prop);
libhal_free_string(prop);
}
else {
return NULL;
}
return ret;
}
static char *
get_prop_string_array(LibHalContext *hal_ctx, const char *udi, const char *prop)
{
char **props, *ret, *str;
int i, len = 0;
props = libhal_device_get_property_strlist(hal_ctx, udi, prop, NULL);
if (props) {
for (i = 0; props[i]; i++)
len += strlen(props[i]);
ret = xcalloc(sizeof(char), len + i); /* i - 1 commas, 1 NULL */
if (!ret) {
libhal_free_string_array(props);
return NULL;
}
str = ret;
for (i = 0; props[i]; i++) {
strcpy(str, props[i]);
str += strlen(props[i]);
*str++ = ',';
}
*(str-1) = '\0';
libhal_free_string_array(props);
}
else {
return NULL;
}
return ret;
}
static void
device_added(LibHalContext *hal_ctx, const char *udi)
{
char *path = NULL, *driver = NULL, *name = NULL, *config_info = NULL;
InputOption *options = NULL, *tmpo = NULL;
DeviceIntPtr dev;
DBusError error;
struct xkb_options xkb_opts = {0};
LibHalPropertySet *set = NULL;
LibHalPropertySetIterator set_iter;
char *psi_key = NULL, *tmp_val;
dbus_error_init(&error);
driver = get_prop_string(hal_ctx, udi, "input.x11_driver");
if (!driver){
/* verbose, don't tell the user unless they _want_ to see it */
LogMessageVerb(X_INFO,7,"config/hal: no driver specified for device %s\n", udi);
goto unwind;
}
path = get_prop_string(hal_ctx, udi, "input.device");
if (!path) {
LogMessage(X_WARNING,"config/hal: no driver or path specified for %s\n", udi);
goto unwind;
}
name = get_prop_string(hal_ctx, udi, "info.product");
if (!name)
name = xstrdup("(unnamed)");
options = xcalloc(sizeof(*options), 1);
if (!options){
LogMessage(X_ERROR, "config/hal: couldn't allocate space for input options!\n");
goto unwind;
}
options->key = xstrdup("_source");
options->value = xstrdup("server/hal");
if (!options->key || !options->value) {
LogMessage(X_ERROR, "config/hal: couldn't allocate first key/value pair\n");
goto unwind;
}
/* most drivers use device.. not path. evdev uses both however, but the
* path version isn't documented apparently. support both for now. */
add_option(&options, "path", path);
add_option(&options, "device", path);
add_option(&options, "driver", driver);
add_option(&options, "name", name);
config_info = xalloc(strlen(udi) + 5); /* "hal:" and NULL */
if (!config_info) {
LogMessage(X_ERROR, "config/hal: couldn't allocate name\n");
goto unwind;
}
sprintf(config_info, "hal:%s", udi);
/* ok, grab options from hal.. iterate through all properties
* and lets see if any of them are options that we can add */
set = libhal_device_get_all_properties(hal_ctx, udi, &error);
if (!set) {
LogMessage(X_ERROR, "config/hal: couldn't get property list for %s: %s (%s)\n",
udi, error.name, error.message);
goto unwind;
}
libhal_psi_init(&set_iter,set);
while (libhal_psi_has_more(&set_iter)) {
/* we are looking for supported keys.. extract and add to options */
psi_key = libhal_psi_get_key(&set_iter);
if (psi_key){
/* normal options first (input.x11_options.<propname>) */
if (!strncasecmp(psi_key, LIBHAL_PROP_KEY, sizeof(LIBHAL_PROP_KEY)-1)){
char* tmp;
/* only support strings for all values */
tmp_val = get_prop_string(hal_ctx, udi, psi_key);
if (tmp_val){
/* xkb needs special handling. HAL specs include
* input.xkb.xyz options, but the x11-input.fdi specifies
* input.x11_options.Xkbxyz options. By default, we use
* the former, unless the specific X11 ones are specified.
* Since we can't predict the order in which the keys
* arrive, we need to store them.
*/
if ((tmp = strcasestr(psi_key, "xkb")) && strlen(tmp) >= 4)
{
if (!strcasecmp(&tmp[3], "layout"))
{
if (xkb_opts.layout)
xfree(xkb_opts.layout);
xkb_opts.layout = strdup(tmp_val);
} else if (!strcasecmp(&tmp[3], "model"))
{
if (xkb_opts.model)
xfree(xkb_opts.model);
xkb_opts.model = strdup(tmp_val);
} else if (!strcasecmp(&tmp[3], "rules"))
{
if (xkb_opts.rules)
xfree(xkb_opts.rules);
xkb_opts.rules = strdup(tmp_val);
} else if (!strcasecmp(&tmp[3], "variant"))
{
if (xkb_opts.variant)
xfree(xkb_opts.variant);
xkb_opts.variant = strdup(tmp_val);
} else if (!strcasecmp(&tmp[3], "options"))
{
if (xkb_opts.options)
xfree(xkb_opts.options);
xkb_opts.options = strdup(tmp_val);
}
} else
{
/* all others */
add_option(&options, psi_key + sizeof(LIBHAL_PROP_KEY)-1, tmp_val);
xfree(tmp_val);
}
} else
{
/* server 1.4 had xkb_options as strlist. */
if ((tmp = strcasestr(psi_key, "xkb")) &&
(strlen(tmp) >= 4) &&
(!strcasecmp(&tmp[3], "options")) &&
(tmp_val = get_prop_string_array(hal_ctx, udi, psi_key)))
{
if (xkb_opts.options)
xfree(xkb_opts.options);
xkb_opts.options = strdup(tmp_val);
}
}
} else if (!strncasecmp(psi_key, LIBHAL_XKB_PROP_KEY, sizeof(LIBHAL_XKB_PROP_KEY)-1)){
char* tmp;
/* only support strings for all values */
tmp_val = get_prop_string(hal_ctx, udi, psi_key);
if (tmp_val && strlen(psi_key) >= sizeof(LIBHAL_XKB_PROP_KEY)) {
tmp = &psi_key[sizeof(LIBHAL_XKB_PROP_KEY) - 1];
if (!strcasecmp(tmp, "layout"))
{
if (!xkb_opts.layout)
xkb_opts.layout = strdup(tmp_val);
} else if (!strcasecmp(tmp, "rules"))
{
if (!xkb_opts.rules)
xkb_opts.rules = strdup(tmp_val);
} else if (!strcasecmp(tmp, "variant"))
{
if (!xkb_opts.variant)
xkb_opts.variant = strdup(tmp_val);
} else if (!strcasecmp(tmp, "model"))
{
if (!xkb_opts.model)
xkb_opts.model = strdup(tmp_val);
} else if (!strcasecmp(tmp, "options"))
{
if (!xkb_opts.options)
xkb_opts.options = strdup(tmp_val);
}
xfree(tmp_val);
} else
{
/* server 1.4 had xkb options as strlist */
tmp_val = get_prop_string_array(hal_ctx, udi, psi_key);
if (tmp_val && strlen(psi_key) >= sizeof(LIBHAL_XKB_PROP_KEY))
{
tmp = &psi_key[sizeof(LIBHAL_XKB_PROP_KEY) - 1];
if (!strcasecmp(tmp, ".options") && (!xkb_opts.options))
xkb_opts.options = strdup(tmp_val);
}
}
}
}
/* psi_key doesn't need to be freed */
libhal_psi_next(&set_iter);
}
/* Now add xkb options */
if (xkb_opts.layout)
add_option(&options, "xkb_layout", xkb_opts.layout);
if (xkb_opts.rules)
add_option(&options, "xkb_rules", xkb_opts.rules);
if (xkb_opts.variant)
add_option(&options, "xkb_variant", xkb_opts.variant);
if (xkb_opts.model)
add_option(&options, "xkb_model", xkb_opts.model);
if (xkb_opts.options)
add_option(&options, "xkb_options", xkb_opts.options);
/* this isn't an error, but how else do you output something that the user can see? */
LogMessage(X_INFO, "config/hal: Adding input device %s\n", name);
if (NewInputDeviceRequest(options, &dev) != Success) {
LogMessage(X_ERROR, "config/hal: NewInputDeviceRequest failed\n");
dev = NULL;
goto unwind;
}
for (; dev; dev = dev->next){
if (dev->config_info)
xfree(dev->config_info);
dev->config_info = xstrdup(config_info);
}
unwind:
if (set)
libhal_free_property_set(set);
if (path)
xfree(path);
if (driver)
xfree(driver);
if (name)
xfree(name);
if (config_info)
xfree(config_info);
while (!dev && (tmpo = options)) {
options = tmpo->next;
xfree(tmpo->key);
xfree(tmpo->value);
xfree(tmpo);
}
if (xkb_opts.layout)
xfree(xkb_opts.layout);
if (xkb_opts.rules)
xfree(xkb_opts.rules);
if (xkb_opts.model)
xfree(xkb_opts.model);
if (xkb_opts.variant)
xfree(xkb_opts.variant);
if (xkb_opts.options)
xfree(xkb_opts.options);
dbus_error_free(&error);
return;
}
static void
disconnect_hook(void *data)
{
DBusError error;
struct config_hal_info *info = data;
if (info->hal_ctx) {
if (dbus_connection_get_is_connected(info->system_bus)) {
dbus_error_init(&error);
if (!libhal_ctx_shutdown(info->hal_ctx, &error))
LogMessage(X_WARNING, "config/hal: disconnect_hook couldn't shut down context: %s (%s)\n",
error.name, error.message);
dbus_error_free(&error);
}
libhal_ctx_free(info->hal_ctx);
}
info->hal_ctx = NULL;
info->system_bus = NULL;
}
static void
connect_hook(DBusConnection *connection, void *data)
{
DBusError error;
struct config_hal_info *info = data;
char **devices;
int num_devices, i;
info->system_bus = connection;
dbus_error_init(&error);
if (!info->hal_ctx)
info->hal_ctx = libhal_ctx_new();
if (!info->hal_ctx) {
LogMessage(X_ERROR, "config/hal: couldn't create HAL context\n");
goto out_err;
}
if (!libhal_ctx_set_dbus_connection(info->hal_ctx, info->system_bus)) {
LogMessage(X_ERROR, "config/hal: couldn't associate HAL context with bus\n");
goto out_ctx;
}
if (!libhal_ctx_init(info->hal_ctx, &error)) {
LogMessage(X_ERROR, "config/hal: couldn't initialise context: %s (%s)\n",
error.name, error.message);
goto out_ctx;
}
if (!libhal_device_property_watch_all(info->hal_ctx, &error)) {
LogMessage(X_ERROR, "config/hal: couldn't watch all properties: %s (%s)\n",
error.name, error.message);
goto out_ctx2;
}
libhal_ctx_set_device_added(info->hal_ctx, device_added);
libhal_ctx_set_device_removed(info->hal_ctx, device_removed);
devices = libhal_find_device_by_capability(info->hal_ctx, "input",
&num_devices, &error);
/* FIXME: Get default devices if error is set. */
for (i = 0; i < num_devices; i++)
device_added(info->hal_ctx, devices[i]);
libhal_free_string_array(devices);
dbus_error_free(&error);
return;
out_ctx2:
if (!libhal_ctx_shutdown(info->hal_ctx, &error))
LogMessage(X_WARNING, "config/hal: couldn't shut down context: %s (%s)\n",
error.name, error.message);
out_ctx:
libhal_ctx_free(info->hal_ctx);
out_err:
dbus_error_free(&error);
info->hal_ctx = NULL;
info->system_bus = NULL;
return;
}
static struct config_hal_info hal_info;
static struct config_dbus_core_hook hook = {
.connect = connect_hook,
.disconnect = disconnect_hook,
.data = &hal_info,
};
int
config_hal_init(void)
{
memset(&hal_info, 0, sizeof(hal_info));
hal_info.system_bus = NULL;
hal_info.hal_ctx = NULL;
if (!config_dbus_core_add_hook(&hook)) {
LogMessage(X_ERROR, "config/hal: failed to add D-Bus hook\n");
return 0;
}
/* verbose message */
LogMessageVerb(X_INFO,7,"config/hal: initialized");
return 1;
}
void
config_hal_fini(void)
{
config_dbus_core_remove_hook(&hook);
}
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