diff options
author | Holger Macht <holger@homac.de> | 2006-10-22 17:24:27 +0200 |
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committer | Holger Macht <holger@homac.de> | 2006-10-22 17:24:27 +0200 |
commit | b57c9251f0442ea2286b281b5efd94a441c414f1 (patch) | |
tree | 32b50b754554a6d6197fb6296b7db72b6cb40d4a | |
parent | 14b2a6220e422c94eba061639b673fda26b543ad (diff) |
initial checkin of liblazy
-rw-r--r-- | AUTHORS | 1 | ||||
-rw-r--r-- | COPYING | 504 | ||||
-rw-r--r-- | ChangeLog | 0 | ||||
-rw-r--r-- | Makefile.am | 1 | ||||
-rw-r--r-- | NEWS | 0 | ||||
-rw-r--r-- | configure.in | 33 | ||||
-rw-r--r-- | liblazy/Makefile.am | 14 | ||||
-rw-r--r-- | liblazy/lazy.pc.in | 12 | ||||
-rw-r--r-- | liblazy/liblazy.c | 59 | ||||
-rw-r--r-- | liblazy/liblazy.h | 273 | ||||
-rw-r--r-- | liblazy/liblazy_dbus.c | 264 | ||||
-rw-r--r-- | liblazy/liblazy_hal.c | 233 | ||||
-rw-r--r-- | liblazy/liblazy_local.h | 40 | ||||
-rw-r--r-- | liblazy/liblazy_polkit.c | 88 |
14 files changed, 1522 insertions, 0 deletions
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Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the + library `Frob' (a library for tweaking knobs) written by James Random Hacker. + + <signature of Ty Coon>, 1 April 1990 + Ty Coon, President of Vice + +That's all there is to it! + + diff --git a/ChangeLog b/ChangeLog new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/ChangeLog diff --git a/Makefile.am b/Makefile.am new file mode 100644 index 0000000..c222e5d --- /dev/null +++ b/Makefile.am @@ -0,0 +1 @@ +SUBDIRS = liblazy tools docs diff --git a/configure.in b/configure.in new file mode 100644 index 0000000..934f221 --- /dev/null +++ b/configure.in @@ -0,0 +1,33 @@ +# -*- Autoconf -*- +# Process this file with autoconf to produce a configure script. + +AC_PREREQ(2.59) + +AC_INIT(liblazy, HEAD, hmacht@suse.de) +AM_INIT_AUTOMAKE +AC_CONFIG_SRCDIR([liblazy/liblazy_hal.c]) + +# Checks for programs. +AC_PROG_CC +AC_PROG_INSTALL +AM_PROG_LIBTOOL + +# Checks for header files. +AC_CHECK_HEADERS([unistd.h string.h stdio.h stdlib.h errno.h]) + +PKG_CHECK_MODULES(DBUS, dbus-1 >= 0.30) + +DBUS_VERSION="`pkg-config --modversion dbus-1`" + +# check for doxygen +AC_CHECK_PROG(DOXYGEN, [doxygen], [doxygen], []) + +AC_SUBST([DBUS_LIBS]) +AC_SUBST([DBUS_CFLAGS]) + +AC_CONFIG_FILES([Makefile + liblazy/Makefile + liblazy/lazy.pc]) + +AC_OUTPUT + diff --git a/liblazy/Makefile.am b/liblazy/Makefile.am new file mode 100644 index 0000000..9f2f9ba --- /dev/null +++ b/liblazy/Makefile.am @@ -0,0 +1,14 @@ +lib_LTLIBRARIES = liblazy.la + +AM_CFLAGS = -std=c99 -Wstrict-prototypes -Wall -fPIC -D_GNU_SOURCE + +INCLUDES = + +include_HEADERS = liblazy.h + +liblazy_la_SOURCES = liblazy_hal.c liblazy_dbus.c liblazy_polkit.c liblazy.c liblazy_local.h +liblazy_la_CFLAGS = $(DBUS_CFLAGS) -Wall +liblazy_la_LDFLAGS = -version-info 0:0:0 $(DBUS_LIBS) + +pkgconfigdir = $(libdir)/pkgconfig +pkgconfig_DATA = lazy.pc diff --git a/liblazy/lazy.pc.in b/liblazy/lazy.pc.in new file mode 100644 index 0000000..23d0edc --- /dev/null +++ b/liblazy/lazy.pc.in @@ -0,0 +1,12 @@ +prefix=@prefix@ +exec_prefix=@exec_prefix@ +libdir=@libdir@ +includedir=@includedir@ + +Name: liblazy +Description: D-Bus methods provided for convenience +Version: @VERSION@ +Requires: dbus-1 + +Libs: -L${libdir} -llazy +Cflags: -I${includedir} diff --git a/liblazy/liblazy.c b/liblazy/liblazy.c new file mode 100644 index 0000000..3aa91fa --- /dev/null +++ b/liblazy/liblazy.c @@ -0,0 +1,59 @@ +/*************************************************************************** + * * + * 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 <stdlib.h> + +void liblazy_free_string(char *string) +{ + if (string == NULL) + return; + free(string); + string = NULL; +} + +void liblazy_free_strlist(char **strlist) +{ + int i = 0; + if (strlist == NULL) + return; + for (i = 0; strlist[i] != NULL; i++) { + free(strlist[i]); + strlist[i] = NULL; + } + free(strlist); + strlist = NULL; +} + +/** @mainpage liblazy + * + * \section sec_intro Introduction + * + * D-Bus methods provided for convenience + * Liblazy is a simple and easy to use library that provides convenient + * functions for sending messages over the D-Bus daemon, querying + * information from HAL or asking PolicyKit for a privilege. + */ diff --git a/liblazy/liblazy.h b/liblazy/liblazy.h new file mode 100644 index 0000000..6ad1711 --- /dev/null +++ b/liblazy/liblazy.h @@ -0,0 +1,273 @@ +/*************************************************************************** + * * + * 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 * + * * + ***************************************************************************/ + +#ifndef LIBLAZY_H +#define LIBLAZY_H + +#define DBUS_API_SUBJECT_TO_CHANGE 1 +#include <dbus/dbus.h> + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +/** @defgroup liblazy Liblazy - D-Bus methods provided for convenience + * @{ */ + +#define LIBLAZY_ERROR_GENERAL -1 +#define LIBLAZY_ERROR_HAL_NOT_READY -10 +#define LIBLAZY_ERROR_HAL_NO_SUCH_PROPERTY -11 + +#define LIBLAZY_ERROR_DBUS_NOT_READY -20 +#define LIBLAZY_ERROR_DBUS_NO_REPLY -21 +#define LIBLAZY_ERROR_DBUS_ERROR_IS_SET -22 + +/** @brief free a string + * + * @param string the string to free + */ +void liblazy_free_string(char *string); + +/** @brief free a null terminated array of strings + * + * @param strlist the string list to free + */ +void liblazy_free_strlist(char **strlist); + +/** @brief send a method call to the system bus + * + * sends a method call to the system bus. The call blocks if a reply is + * given. If the call shouldn't block, give NULL for the reply + * + * @param destination the destination to send to + * @param path the object path to send to + * @param interface the interface to send to + * @param method the method to send + * @param reply a DBusMessage to store the reply or NULL if the call + * shouldn't block + * @param first_arg_type a DBUS_TYPE_* of the fist argument + * @param ... variable argument list finished with DBUS_TYPE_INVALID + * + * @return 0 on success, LIBLAZY_ERROR_* on failure + */ +int liblazy_dbus_system_send_method_call(const char *destination, const char *path, + const char *interface, const char *method, + DBusMessage **reply, + int first_arg_type, ...); + +/** @brief send a method call to the session bus + * + * sends a method call to the session bus. The call blocks if a reply is + * given. If the call shouldn't block, give NULL for the reply + * + * @param destination the destination to send to + * @param path the object path to send to + * @param interface the interface to send to + * @param method the method to send + * @param reply a DBusMessage to store the reply or NULL if the call + * shouldn't block + * @param first_arg_type a DBUS_TYPE_* of the fist argument + * @param ... variable argument list finished with DBUS_TYPE_INVALID + * + * @return 0 on success, LIBLAZY_ERROR_* on failure + */ + +int liblazy_dbus_session_send_method_call(const char *destination, const char *path, + const char *interface, const char *method, + DBusMessage **reply, + int first_arg_type, ...); + +/** @brief send a signal over the system bus + * + * sends a signal over the system bus. The call blocks if a reply is + * given. If the call shouldn't block, give NULL for the reply + * + * @param path the object path to send to + * @param interface the interface to send to + * @param name the name of the signal + * @param first_arg_type a DBUS_TYPE_* of the fist argument + * @param ... variable argument list finished with DBUS_TYPE_INVALID + * + * @return 0 on success, LIBLAZY_ERROR_* on failure + */ +int liblazy_dbus_system_send_signal(const char *path, const char *interface, + const char *name, int first_arg_type, ...); + +/** @brief send a signal over the session bus + * + * sends a signal over the session bus. The call blocks if a reply is + * given. If the call shouldn't block, give NULL for the reply + * + * @param path the object path to send to + * @param interface the interface to send to + * @param name the name of the signal + * @param first_arg_type a DBUS_TYPE_* of the fist argument + * @param ... variable argument list finished with DBUS_TYPE_INVALID + * + * @return 0 on success, LIBLAZY_ERROR_* on failure + */ +int liblazy_dbus_session_send_signal(const char *path, const char *interface, + const char *name, int first_arg_type, ...); + +/** @brief get an argument from a DBusMessage + * + * @param message the DBusMessage to get the argument from + * @param type the type of the argument + * @param arg a location to store the argument + * @param no a number specifying the n'th argument of the given type + * + * @return 0 on success, LIBLAZY_ERROR_* on failure + */ +int liblazy_dbus_message_get_basic_arg(DBusMessage *message, int type, + void *arg, int no); + +/** @brief get a array argument from a DBusMessage as a string list + * + * @param message the message to get the argument from + * @param strlist a pointer to a string array to store the result + * @param strlist pointer to array of strings to store the result. Has to + * be freed with @ref liblazy_free_strlist + * @param no a number specifying the n'th string array in the reply + * + * @return 0 on success, LIBLAZY_ERROR_* on failure + */ +int liblazy_dbus_message_get_strlist_arg(DBusMessage *message, + char ***strlist, int no); + +/** @brief get integer property from HAL + * + * fetches one interger value from HAL. + * + * @param udi the device to fetch the value from + * @param property the property to fetch + * @param value location to store the result + * + * @return 0 on success, LIBLAZY_ERROR_* on failure + */ +int liblazy_hal_get_property_int(char *udi, char *property, int *value); + +/** @brief get boolean property from HAL + * + * fetches one boolean value from HAL. + * + * @param udi the device to fetch the value from + * @param property the property to fetch + * @param value location to store the result + * + * @return 0 on success, LIBLAZY_ERROR_* on failure + */ +int liblazy_hal_get_property_bool(char *udi, char *property, int *value); + +/** @brief get string property from HAL + * + * fetches one string value from HAL. + * + * @param udi the device to fetch the value from + * @param property the property to fetch + * @param value location to store the result + * + * @return 0 on success, LIBLAZY_ERROR_* on failure + */ +int liblazy_hal_get_property_string(char *udi, char *property, char **value); + +/** @brief get string list property from HAL + * + * fetches a string list value from HAL. + * + * @param udi the device to fetch the value from + * @param property the property to fetch + * @param strlist pointer to array of strings to store the result. Has to + * be freed with @ref liblazy_free_strlist + * + * @return 0 on success, LIBLAZY_ERROR_* on failure + */ +int liblazy_hal_get_property_strlist(char *udi, char *property, char ***strlist); + +/** @brief check if a device has a capability + * + * @param udi the device to query on + * @param capability the capability to query for + * + * @return 1 if the device possesses the capability, 0 if not and + * LIBLAZY_ERROR_* on failure + */ +int liblazy_hal_query_capability(char *udi, char *capability); + +/** @brief find devices with a given capability + * + * @param capability the capability the devices should have + * @param strlist pointer to array of strings to store the result. Has to + * be freed with @ref liblazy_free_strlist + * + * @return 0 on success, LIBLAZY_ERROR_* on failure + */ +int liblazy_hal_find_device_by_capability(char *capability, char ***strlist); + +/** @brief find devices with given key and value + * + * @param key the key to match against + * @param value the value to match against + * @param strlist pointer to array of strings to store the result. Has to + * be freed with @ref liblazy_free_strlist + * + * @return 0 on success, LIBLAZY_ERROR_* on failure + */ +int liblazy_hal_find_device_by_string_match(char *key, char *value, char ***strlist); + +/** @brief check if a user possesses a privilege + * + * Functions asks the PolicyKit daemon if a user possesses a given + * privilege on a optional given ressource + * + * @param user the username to check for + * @param privilege the privilege to check for + * @param ressource the ressource to check for or NULL + * + * @return 0 on success, LIBLAZY_ERROR_* on failure + */ +int liblazy_polkit_is_user_allowed_by_name(char *user, char *privilege, + char *ressource); + +/** @brief check if a user possesses a privilege + * + * Functions asks the PolicyKit daemon if a user possesses a given + * privilege on a optional given ressource + * + * @param uid the uid to check for + * @param privilege the privilege to check for + * @param ressource the ressource to check for or NULL + * + * @return 0 on success, LIBLAZY_ERROR_* on failure + */ +int liblazy_polkit_is_user_allowed_by_uid(int uid, char *privilege, + char *ressource); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* LIBLAZY_H */ + +/** @} */// end of liblazy group diff --git a/liblazy/liblazy_dbus.c b/liblazy/liblazy_dbus.c new file mode 100644 index 0000000..d98fc4d --- /dev/null +++ b/liblazy/liblazy_dbus.c @@ -0,0 +1,264 @@ +/*************************************************************************** + * * + * 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 <stdio.h> +#include <errno.h> +#include <stdlib.h> +#include <string.h> + +int liblazy_dbus_send_method_call(const char *destination, const char *path, + const char *interface, const char *method, + int bus_type, + DBusMessage **reply, + int first_arg_type, va_list var_args) +{ + DBusError dbus_error; + DBusConnection *dbus_connection = NULL; + DBusMessage *message = NULL; + int ret = 0; + + dbus_error_init(&dbus_error); + + dbus_connection = dbus_bus_get(bus_type, &dbus_error); + if (dbus_connection == NULL || dbus_error_is_set(&dbus_error)) { + ERROR("Connection to dbus not ready, skipping method call %s: %s", + method, dbus_error.message); + ret = LIBLAZY_ERROR_DBUS_NOT_READY; + goto Free_Error; + } + + message = dbus_message_new_method_call(destination, path, interface, method); + dbus_message_append_args_valist(message, first_arg_type, var_args); + + if (reply == NULL) { + if (!dbus_connection_send(dbus_connection, message, NULL)) { + ERROR("Could not send method call: OOM"); + ret = LIBLAZY_ERROR_GENERAL; + } + } else { + *reply = dbus_connection_send_with_reply_and_block(dbus_connection, + message, -1, + &dbus_error); + if (dbus_error_is_set(&dbus_error)) { + ERROR("Received error reply: %s", dbus_error.message); + ret = LIBLAZY_ERROR_DBUS_ERROR_IS_SET; + } + } + + dbus_message_unref(message); +Free_Error: + dbus_error_free(&dbus_error); + return ret; +} + +int liblazy_dbus_system_send_method_call(const char *destination, const char *path, + const char *interface, const char *method, + DBusMessage **reply, + int first_arg_type, ...) +{ + int ret; + va_list var_args; + + va_start(var_args, first_arg_type); + ret = liblazy_dbus_send_method_call(destination, + path, + interface, + method, + DBUS_BUS_SYSTEM, + reply, + first_arg_type, + var_args); + va_end(var_args); + return ret; +} + +int liblazy_dbus_session_send_method_call(const char *destination, const char *path, + const char *interface, const char *method, + DBusMessage **reply, + int first_arg_type, ...) +{ + int ret; + va_list var_args; + + va_start(var_args, first_arg_type); + ret = liblazy_dbus_send_method_call(destination, + path, + interface, + method, + DBUS_BUS_SESSION, + reply, + first_arg_type, + var_args); + va_end(var_args); + return ret; +} + +static int liblazy_dbus_send_signal(const char *path, const char *interface, + const char *name, int bus_type, + int first_arg_type, va_list var_args) +{ + DBusError dbus_error; + DBusMessage *message; + DBusConnection *dbus_connection; + int ret = 0; + + dbus_error_init(&dbus_error); + + dbus_connection = dbus_bus_get(bus_type, &dbus_error); + if (dbus_connection == NULL || dbus_error_is_set(&dbus_error)) { + ERROR("Connection to dbus not ready, skipping signal %s: %s", + name, dbus_error.message); + ret = LIBLAZY_ERROR_DBUS_NOT_READY; + goto Free_Error; + } + + message = dbus_message_new_signal(path, interface, name); + dbus_message_append_args_valist(message, first_arg_type, var_args); + + if (!dbus_connection_send(dbus_connection, message, NULL)) { + ERROR("Could not send signal to D-BUS system bus."); + ret = LIBLAZY_ERROR_GENERAL; + } + + dbus_message_unref(message); +Free_Error: + dbus_error_free(&dbus_error); + return ret; +} + +int liblazy_dbus_system_send_signal(const char *path, const char *interface, + const char *name, int first_arg_type, ...) +{ + int ret; + va_list var_args; + + va_start(var_args, first_arg_type); + ret = liblazy_dbus_send_signal(path, interface, name, DBUS_BUS_SYSTEM, + first_arg_type, var_args); + va_end(var_args); + return ret; +} + +int liblazy_dbus_session_send_signal(const char *path, const char *interface, + const char *name, int first_arg_type, ...) +{ + int ret; + va_list var_args; + + va_start(var_args, first_arg_type); + ret = liblazy_dbus_send_signal(path, interface, name, DBUS_BUS_SESSION, + first_arg_type, var_args); + va_end(var_args); + return ret; + +} + +int liblazy_dbus_message_get_basic_arg(DBusMessage *message, int type, + void *arg, int no) +{ + int current_type; + DBusMessageIter iter; + int x = 0; + int ret = -1; + int _no = 0; + + for (dbus_message_iter_init(message, &iter); + (current_type = dbus_message_iter_get_arg_type(&iter)) != DBUS_TYPE_INVALID; + x++, dbus_message_iter_next(&iter)) { + if (current_type == type) { + if (_no < no) { + _no++; + continue; + } else if (_no > no) + break; + else { + dbus_message_iter_get_basic(&iter, arg); + ret = 0; + break; + } + } + } + + return ret; +} + +static char **liblazy_dbus_get_strlist_from_array(DBusMessageIter *reply_iter) +{ + const char *val; + DBusMessageIter iter_array; + char **strlist = NULL; + int i = 0; + + if (dbus_message_iter_get_arg_type(reply_iter) != DBUS_TYPE_ARRAY) { + ERROR("Iterator doesn't contain an array at current position"); + return NULL; + } + + dbus_message_iter_recurse(reply_iter, &iter_array); + + strlist = (char **)malloc(0); + while (dbus_message_iter_get_arg_type(&iter_array) == DBUS_TYPE_STRING) { + dbus_message_iter_get_basic(&iter_array, &val); + strlist = realloc(strlist, sizeof(char**) * (i + 1)); + strlist[i] = strdup(val); + dbus_message_iter_next(&iter_array); + i++; + } + strlist = realloc(strlist, sizeof(char**) * (i + 1)); + strlist[i] = NULL; + return strlist; + +} + +int liblazy_dbus_message_get_strlist_arg(DBusMessage *message, + char ***strlist, int no) +{ + int current_type; + DBusMessageIter iter; + int x = 0; + int ret = -1; + int _no = 0; + + for (dbus_message_iter_init(message, &iter); + (current_type = dbus_message_iter_get_arg_type(&iter)) != DBUS_TYPE_INVALID; + x++, dbus_message_iter_next(&iter)) { + if (current_type == DBUS_TYPE_ARRAY) { + if (_no < no) { + _no++; + continue; + } else if (_no > no) + break; + else { + *strlist = liblazy_dbus_get_strlist_from_array(&iter); + ret = 0; + break; + } + } + } + return ret; +} 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; +} diff --git a/liblazy/liblazy_local.h b/liblazy/liblazy_local.h new file mode 100644 index 0000000..b48eb56 --- /dev/null +++ b/liblazy/liblazy_local.h @@ -0,0 +1,40 @@ +/*************************************************************************** + * * + * 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 * + * * + ***************************************************************************/ + +#ifndef LIBLAZY_LOCAL_H +#define LIBLAZY_LOCAL_H + +#define ERROR(string, args...) \ +do{\ + fprintf(stderr, "liblazy (%s:%d): "string"\n", __FUNCTION__, __LINE__, ## args); \ +}while(0); + +int liblazy_dbus_send_method_call(const char *destination, const char *path, + const char *interface, const char *method, + int bus_type, + DBusMessage **reply, + int first_arg_type, va_list var_args); + +#endif /* LIBLAZY_LOCAL_H */ diff --git a/liblazy/liblazy_polkit.c b/liblazy/liblazy_polkit.c new file mode 100644 index 0000000..3bfd4c6 --- /dev/null +++ b/liblazy/liblazy_polkit.c @@ -0,0 +1,88 @@ +/*************************************************************************** + * * + * 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 <stdio.h> +#include <stdlib.h> + +#define DBUS_POLKIT_SERVICE "org.freedesktop.PolicyKit" +#define DBUS_POLKIT_PATH "/org/freedesktop/PolicyKit/Manager" +#define DBUS_POLKIT_INTERFACE "org.freedesktop.PolicyKit.Manager" + +int liblazy_polkit_is_user_allowed_by_name(char *user, + char *privilege, + char *ressource) +{ + DBusMessage *reply; + DBusError dbus_error; + DBusConnection *dbus_connection; + const char *unique_name; + int is_allowed; + int ret = 0; + + dbus_error_init(&dbus_error); + + dbus_connection = dbus_bus_get(DBUS_BUS_SYSTEM, &dbus_error); + if (dbus_error_is_set(&dbus_error)) { + ERROR("Connection to dbus not ready, skipping privilege " + "lookup for privilege %s for user %s: %s\n", + privilege, user, dbus_error.message); + dbus_error_free(&dbus_error); + return LIBLAZY_ERROR_DBUS_NOT_READY; + } + + unique_name = dbus_bus_get_unique_name(dbus_connection); + + if (ressource == NULL) + ressource = ""; + + ret = liblazy_dbus_system_send_method_call(DBUS_POLKIT_SERVICE, + DBUS_POLKIT_PATH, + DBUS_POLKIT_INTERFACE, + "IsUserPrivileged", + &reply, + DBUS_TYPE_STRING, &unique_name, + DBUS_TYPE_STRING, &user, + DBUS_TYPE_STRING, &privilege, + DBUS_TYPE_STRING, &ressource, + DBUS_TYPE_INVALID); + + ret = liblazy_dbus_message_get_basic_arg(reply, DBUS_TYPE_BOOLEAN, + &is_allowed, 0); + dbus_message_unref(reply); + if (ret) + return ret; + return is_allowed; +} + +int liblazy_polkit_is_user_allowed_by_uid(int uid, char *privilege, + char *ressource) +{ + char *user = getenv("USER"); + return liblazy_polkit_is_user_allowed_by_name(user, privilege, + ressource); +} |