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Diffstat (limited to 'liblazy/liblazy_hal.c')
| -rw-r--r-- | liblazy/liblazy_hal.c | 233 |
1 files changed, 233 insertions, 0 deletions
diff --git a/liblazy/liblazy_hal.c b/liblazy/liblazy_hal.c new file mode 100644 index 0000000..bd15dc0 --- /dev/null +++ b/liblazy/liblazy_hal.c @@ -0,0 +1,233 @@ +/*************************************************************************** + * * + * liblazy * + * * + * Copyright (C) 2006 Holger Macht <holger@homac.de> * + * * + * Author(s): Holger Macht <holger@homac.de> * + * * + * This library is free software; you can redistribute it and/or modify it * + * under the terms of the GNU Lesser General Public License as published * + * by the Free Software Foundation; either version 2.1 of the License, or * + * (at your option) any later version. * + * * + * This library is distributed in the hope that it will be useful, but * + * WITHOUT ANY WARRANTY; without even the implied warranty of * + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * + * Lesser General Public License for more details. * + * * + * You should have received a copy of the GNU Lesser General Public * + * License along with this library; if not, write to the Free Software * + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * + * 02110-1301 USA * + * * + ***************************************************************************/ + +#include "liblazy.h" +#include "liblazy_local.h" + +#include <string.h> +#include <stdio.h> +#include <stdlib.h> + +#define DBUS_HAL_SERVICE "org.freedesktop.Hal" +#define DBUS_HAL_DEVICE_INTERFACE "org.freedesktop.Hal.Device" +#define DBUS_HAL_MANAGER_PATH "/org/freedesktop/Hal/Manager" +#define DBUS_HAL_MANAGER_INTERFACE "org.freedesktop.Hal.Manager" + +static int liblazy_hal_property_exists(char *udi, char *property) +{ + int error = 0; + int exists = 0; + DBusMessage *reply; + + error = liblazy_dbus_system_send_method_call(DBUS_HAL_SERVICE, + udi, + DBUS_HAL_DEVICE_INTERFACE, + "PropertyExists", + &reply, + DBUS_TYPE_STRING, + &property, + DBUS_TYPE_INVALID); + + if (error) { + ERROR("Error checking if property '%s' exists", property); + return error; + } + + error = liblazy_dbus_message_get_basic_arg(reply, DBUS_TYPE_BOOLEAN, + &exists, 0); + dbus_message_unref(reply); + if (exists == 1) + return 1; + return error; +} + +static int liblazy_hal_get_property(char *udi, char *property, char *method, + int type, void *value) +{ + int error = 0; + DBusMessage *reply; + + error = liblazy_dbus_system_send_method_call(DBUS_HAL_SERVICE, + udi, + DBUS_HAL_DEVICE_INTERFACE, + method, + &reply, + DBUS_TYPE_STRING, + &property, + DBUS_TYPE_INVALID); + + + error = liblazy_dbus_message_get_basic_arg(reply, type, value, 0); + dbus_message_unref(reply); + if (error) + ERROR("Error fetching property '%s'", property); + return error; +} + +static int liblazy_hal_get_strlist_manager(char ***strlist, char *method, + int first_arg_type, ...) +{ + int error = 0; + DBusMessage *reply; + va_list var_args; + + va_start(var_args, first_arg_type); + + error = liblazy_dbus_send_method_call(DBUS_HAL_SERVICE, + DBUS_HAL_MANAGER_PATH, + DBUS_HAL_MANAGER_INTERFACE, + method, + DBUS_BUS_SYSTEM, + &reply, + first_arg_type, + var_args); + va_end(var_args); + + if (error) { + ERROR("Error while sending method %s to HAL", method); + return error; + } + + error = liblazy_dbus_message_get_strlist_arg(reply, strlist, 0); + dbus_message_unref(reply); + return error; +} + +int liblazy_hal_get_property_string(char *udi, char *property, char **value) +{ + char *str; + int error; + + if (liblazy_hal_property_exists(udi, property) != 1) { + *value = NULL; + return LIBLAZY_ERROR_HAL_NO_SUCH_PROPERTY; + } + + error = liblazy_hal_get_property(udi, property, "GetPropertyString", + DBUS_TYPE_STRING, &str); + + *value = strdup(str); + return error; +} + +int liblazy_hal_get_property_int(char *udi, char *property, int *value) +{ + if (!liblazy_hal_property_exists(udi, property)) { + *value = -1; + return LIBLAZY_ERROR_HAL_NO_SUCH_PROPERTY; + } + + return liblazy_hal_get_property(udi, property, "GetPropertyInteger", + DBUS_TYPE_INT32, value); +} + +int liblazy_hal_get_property_bool(char *udi, char *property, int *value) +{ + if (!liblazy_hal_property_exists(udi, property)) { + *value = -1; + return LIBLAZY_ERROR_HAL_NO_SUCH_PROPERTY; + } + + return liblazy_hal_get_property(udi, property, "GetPropertyBoolean", + DBUS_TYPE_BOOLEAN, value); +} + +int liblazy_hal_get_property_strlist(char *udi, char *property, char ***strlist) +{ + int error = 0; + DBusMessage *reply; + + error = liblazy_hal_property_exists(udi, property); + if (!error) { + strlist[0] = NULL; + return error; + } + + error = liblazy_dbus_system_send_method_call(DBUS_HAL_SERVICE, + udi, + DBUS_HAL_DEVICE_INTERFACE, + "GetPropertyStringList", + &reply, + DBUS_TYPE_STRING, + &property, + DBUS_TYPE_INVALID); + + if (error) { + ERROR("Error while getting strlist property %s from HAL", property); + return error; + } + + error = liblazy_dbus_message_get_strlist_arg(reply, strlist, 0); + dbus_message_unref(reply); + + return error; +} + +int liblazy_hal_query_capability(char *udi, char *capability) +{ + int i; + int error = -1; + char **caps = NULL; + + error = liblazy_hal_get_property_strlist(udi, "info.capabilities", &caps); + if (caps != NULL && !error) { + for (i = 0; caps[i] != NULL; i++) { + if (strcmp(caps[i], capability) == 0) { + error = 1; + break; + } + } + liblazy_free_strlist(caps); + error = 0; + } + return error; +} + +int liblazy_hal_find_device_by_capability(char *capability, char ***strlist) +{ + int error; + error = liblazy_hal_get_strlist_manager(strlist, "FindDeviceByCapability", + DBUS_TYPE_STRING, &capability, + DBUS_TYPE_INVALID); + if (error) { + strlist[0] = NULL; + *strlist = NULL; + } + return error; + +} + +int liblazy_hal_find_device_by_string_match(char *key, char *value, char ***strlist) +{ + int error; + error = liblazy_hal_get_strlist_manager(strlist, "FindDeviceStringMatch", + DBUS_TYPE_STRING, &key, + DBUS_TYPE_STRING, &value, DBUS_TYPE_INVALID); + if (error) { + strlist[0] = NULL; + *strlist = NULL; + } + return error; +} |