-/*
- * kdbus-d.c
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+/* kdbus-d.c kdbus related daemon functions
+ *
+ * Copyright (C) 2013 Samsung Electronics
+ *
+ * Licensed under the Academic Free License version 2.1
*
- * Created on: Sep 4, 2013
- * Author: r.pajak
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version and 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.
*
- * kdbus add-on to dbus daemon
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
+#include <dbus/dbus-connection-internal.h>
#include "kdbus-d.h"
#include <dbus/kdbus.h>
-#include <dbus/dbus-connection-internal.h>
#include <dbus/dbus-bus.h>
#include "dispatch.h"
+#include <dbus/kdbus-common.h>
+#include <dbus/dbus-transport.h>
+#include <dbus/dbus-transport-kdbus.h>
+#include "connection.h"
+#include "activation.h"
+#include "services.h"
#include <utils.h>
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
+#include <errno.h>
+
+__u64 sender_name_to_id(const char* name, DBusError* error)
+{
+ __u64 sender_id = 0;
+
+ if(!strncmp(name, ":1.", 3)) /*if name is unique name it must be converted to unique id*/
+ sender_id = strtoull(&name[3], NULL, 10);
+ else
+ dbus_set_error (error, DBUS_ERROR_INVALID_ARGS, "Could not convert sender of the message into kdbus unique id");
+
+ return sender_id;
+}
char* make_kdbus_bus(DBusBusType type, DBusError *error)
{
int fdc, ret;
char *bus;
- /*TODO Distinguish session and system bus make*/
- /*TODO Add dbus_set_error(error, DBUS_ERROR_FAILED, "...") (?)*/
-
_dbus_verbose("Opening /dev/kdbus/control\n");
fdc = open("/dev/kdbus/control", O_RDWR|O_CLOEXEC);
if (fdc < 0)
{
_dbus_verbose("--- error %d (%m)\n", fdc);
+ dbus_set_error(error, DBUS_ERROR_FAILED, "Opening /dev/kdbus/control failed: %d (%m)", fdc);
return NULL;
}
bus_make.head.bloom_size = 64;
bus_make.head.flags = KDBUS_MAKE_ACCESS_WORLD;
- snprintf(bus_make.name, sizeof(bus_make.name), "%u-kdbus", getuid());
+ if(type == DBUS_BUS_SYSTEM)
+ snprintf(bus_make.name, sizeof(bus_make.name), "%u-kdbus-%s", getuid(), "system");
+ else if(type == DBUS_BUS_SESSION)
+ snprintf(bus_make.name, sizeof(bus_make.name), "%u-kdbus", getuid());
+ else
+ snprintf(bus_make.name, sizeof(bus_make.name), "%u-kdbus-%u", getuid(), getpid());
+
bus_make.n_type = KDBUS_MAKE_NAME;
bus_make.n_size = KDBUS_PART_HEADER_SIZE + strlen(bus_make.name) + 1;
bus_make.head.size = sizeof(struct kdbus_cmd_bus_make) + bus_make.n_size;
if (ret)
{
_dbus_verbose("--- error %d (%m)\n", ret);
+ dbus_set_error(error, DBUS_ERROR_FAILED, "Creating bus '%s' failed: %d (%m)", bus_make.name, fdc);
return NULL;
}
dbus_bus_set_bus_connection_address(type, address);
- connection = dbus_bus_get(type, error);
+ connection = dbus_bus_get_private(type, error); /*todo possibly could be optimised by using lower functions*/
if(connection == NULL)
return NULL;
- if(dbus_bus_request_name(connection, DBUS_SERVICE_DBUS, 0, error) != DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER)
- goto failed;
+ if(!add_match_kdbus (dbus_connection_get_transport(connection), 1, "member='IdRemoved'"))
+ {
+ dbus_set_error (error, _dbus_error_from_errno (errno), "Could not add match for id:1, %s", _dbus_strerror_from_errno ());
+ goto failed;
+ }
+ if(!add_match_kdbus (dbus_connection_get_transport(connection), 1, "member='NameChanged'"))
+ {
+ dbus_set_error (error, _dbus_error_from_errno (errno), "Could not add match for id:1, %s", _dbus_strerror_from_errno ());
+ goto failed;
+ }
+ if(!add_match_kdbus (dbus_connection_get_transport(connection), 1, "member='NameLost'"))
+ {
+ dbus_set_error (error, _dbus_error_from_errno (errno), "Could not add match for id:1, %s", _dbus_strerror_from_errno ());
+ goto failed;
+ }
+ if(!add_match_kdbus (dbus_connection_get_transport(connection), 1, "member='NameAcquired'"))
+ {
+ dbus_set_error (error, _dbus_error_from_errno (errno), "Could not add match for id:1, %s", _dbus_strerror_from_errno ());
+ goto failed;
+ }
- dbus_bus_add_match(connection, "type='signal', member='NameAcquired'", error);
- dbus_bus_add_match(connection, "type='signal', member='NameLost'", error);
if(dbus_error_is_set(error))
{
failed:
return connection;
}
+
+dbus_bool_t register_daemon_name(DBusConnection* connection)
+{
+ DBusString daemon_name;
+ dbus_bool_t retval = FALSE;
+ BusTransaction *transaction;
+
+ _dbus_string_init_const(&daemon_name, DBUS_SERVICE_DBUS);
+ if(!kdbus_register_policy (&daemon_name, connection))
+ return FALSE;
+
+ if(kdbus_request_name(connection, &daemon_name, 0, 0) != DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER)
+ return FALSE;
+
+ transaction = bus_transaction_new (bus_connection_get_context(connection));
+ if (transaction == NULL)
+ {
+ kdbus_release_name(connection, &daemon_name, 0);
+ goto out;
+ }
+
+ if(!bus_registry_ensure (bus_connection_get_registry (connection), &daemon_name, connection, 0, transaction, NULL))
+ {
+ kdbus_release_name(connection, &daemon_name, 0);
+ goto out;
+ }
+
+ retval = TRUE;
+
+out:
+ bus_transaction_cancel_and_free(transaction);
+ return retval;
+}
+
+dbus_bool_t kdbus_register_policy (const DBusString *service_name, DBusConnection* connection)
+{
+ int fd;
+
+ _dbus_transport_get_socket_fd(dbus_connection_get_transport(connection), &fd);
+
+ return register_kdbus_policy(_dbus_string_get_const_data(service_name), fd);
+}
+
+dbus_uint32_t kdbus_request_name(DBusConnection* connection, const DBusString *service_name, dbus_uint32_t flags, __u64 sender_id)
+{
+ int fd;
+
+ _dbus_transport_get_socket_fd(dbus_connection_get_transport(connection), &fd);
+
+ return request_kdbus_name(fd, _dbus_string_get_const_data(service_name), flags, sender_id);
+}
+
+dbus_uint32_t kdbus_release_name(DBusConnection* connection, const DBusString *service_name, __u64 sender_id)
+{
+ int fd;
+
+ _dbus_transport_get_socket_fd(dbus_connection_get_transport(connection), &fd);
+
+ return release_kdbus_name(fd, _dbus_string_get_const_data(service_name), sender_id);
+}
+
+dbus_bool_t kdbus_list_services (DBusConnection* connection, char ***listp, int *array_len)
+{
+ int fd;
+
+ _dbus_transport_get_socket_fd(dbus_connection_get_transport(connection), &fd);
+
+ return list_kdbus_names(fd, listp, array_len);
+}
+
+dbus_bool_t kdbus_add_match_rule (DBusConnection* connection, DBusMessage* message, const char* text, DBusError* error)
+{
+ __u64 sender_id;
+
+ sender_id = sender_name_to_id(dbus_message_get_sender(message), error);
+ if(dbus_error_is_set(error))
+ return FALSE;
+
+ if(!add_match_kdbus (dbus_connection_get_transport(connection), sender_id, text))
+ {
+ dbus_set_error (error, _dbus_error_from_errno (errno), "Could not add match for id:%d, %s",
+ sender_id, _dbus_strerror_from_errno ());
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+dbus_bool_t kdbus_remove_match (DBusConnection* connection, DBusMessage* message, DBusError* error)
+{
+ __u64 sender_id;
+
+ sender_id = sender_name_to_id(dbus_message_get_sender(message), error);
+ if(dbus_error_is_set(error))
+ return FALSE;
+
+ if(!remove_match_kdbus (dbus_connection_get_transport(connection), sender_id))
+ {
+ dbus_set_error (error, _dbus_error_from_errno (errno), "Could not remove match rules for id:%d", sender_id);
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+dbus_bool_t kdbus_get_connection_unix_user(DBusConnection* connection, DBusMessage* message, unsigned long* uid, DBusError* error)
+{
+ char* name = NULL;
+ struct nameInfo info;
+ int inter_ret;
+ dbus_bool_t ret = FALSE;
+
+ dbus_message_get_args(message, NULL, DBUS_TYPE_STRING, &name, DBUS_TYPE_INVALID);
+ inter_ret = kdbus_NameQuery(name, dbus_connection_get_transport(connection), &info);
+ if(inter_ret == 0) //name found
+ {
+ _dbus_verbose("User id:%llu\n", (unsigned long long) info.userId);
+ *uid = info.userId;
+ return TRUE;
+ }
+ else if(inter_ret == -ENOENT) //name has no owner
+ dbus_set_error (error, DBUS_ERROR_FAILED, "Could not get UID of name '%s': no such name", name);
+ else
+ {
+ _dbus_verbose("kdbus error determining UID: err %d (%m)\n", errno);
+ dbus_set_error (error, DBUS_ERROR_FAILED, "Could not determine UID for '%s'", name);
+ }
+
+ return ret;
+}
+
+dbus_bool_t kdbus_get_connection_unix_process_id(DBusConnection* connection, DBusMessage* message, unsigned long* pid, DBusError* error)
+{
+ char* name = NULL;
+ struct nameInfo info;
+ int inter_ret;
+ dbus_bool_t ret = FALSE;
+
+ dbus_message_get_args(message, NULL, DBUS_TYPE_STRING, &name, DBUS_TYPE_INVALID);
+ inter_ret = kdbus_NameQuery(name, dbus_connection_get_transport(connection), &info);
+ if(inter_ret == 0) //name found
+ {
+ _dbus_verbose("Process id:%llu\n", (unsigned long long) info.processId);
+ *pid = info.processId;
+ return TRUE;
+ }
+ else if(inter_ret == -ENOENT) //name has no owner
+ dbus_set_error (error, DBUS_ERROR_FAILED, "Could not get PID of name '%s': no such name", name);
+ else
+ {
+ _dbus_verbose("kdbus error determining PID: err %d (%m)\n", errno);
+ dbus_set_error (error, DBUS_ERROR_FAILED, "Could not determine PID for '%s'", name);
+ }
+
+ return ret;
+}
+
+dbus_bool_t kdbus_get_connection_unix_selinux_security_context(DBusConnection* connection, DBusMessage* message, DBusMessage* reply, DBusError* error)
+{
+ char* name = NULL;
+ struct nameInfo info;
+ int inter_ret;
+ dbus_bool_t ret = FALSE;
+
+ dbus_message_get_args(message, NULL, DBUS_TYPE_STRING, &name, DBUS_TYPE_INVALID);
+ inter_ret = kdbus_NameQuery(name, dbus_connection_get_transport(connection), &info);
+ if(inter_ret == -ENOENT) //name has no owner
+ dbus_set_error (error, DBUS_ERROR_FAILED, "Could not get security context of name '%s': no such name", name);
+ else if(inter_ret < 0)
+ {
+ _dbus_verbose("kdbus error determining security context: err %d (%m)\n", errno);
+ dbus_set_error (error, DBUS_ERROR_FAILED, "Could not determine security context for '%s'", name);
+ }
+ else
+ {
+ if (!dbus_message_append_args (reply, DBUS_TYPE_ARRAY, DBUS_TYPE_BYTE, &info.sec_label, info.sec_label_len, DBUS_TYPE_INVALID))
+ {
+ _DBUS_SET_OOM (error);
+ return FALSE;
+ }
+ ret = TRUE;
+ }
+
+ return ret;
+}
+
+DBusConnection* create_phantom_connection(DBusConnection* connection, const char* unique_name, DBusError* error)
+{
+ DBusConnection *phantom_connection;
+ DBusString name;
+
+ _dbus_string_init_const(&name, unique_name);
+
+ phantom_connection = _dbus_connection_new_for_used_transport (dbus_connection_get_transport(connection));
+ if(phantom_connection == NULL)
+ return FALSE;
+ if(!bus_connections_setup_connection(bus_connection_get_connections(connection), phantom_connection))
+ {
+ dbus_connection_unref_phantom(phantom_connection);
+ phantom_connection = NULL;
+ dbus_set_error (error, DBUS_ERROR_FAILED , "Name \"%s\" could not be acquired", unique_name);
+ goto out;
+ }
+ if(!bus_connection_complete(phantom_connection, &name, error))
+ {
+ bus_connection_disconnected(phantom_connection);
+ phantom_connection = NULL;
+ goto out;
+ }
+
+ _dbus_verbose ("Created phantom connection for %s\n", bus_connection_get_name(phantom_connection));
+
+out:
+ return phantom_connection;
+}
+
+dbus_bool_t register_kdbus_starters(DBusConnection* connection)
+{
+ int i,j, len;
+ char **services;
+ dbus_bool_t retval = FALSE;
+ int fd;
+ BusTransaction *transaction;
+ DBusString name;
+
+ transaction = bus_transaction_new (bus_connection_get_context(connection));
+ if (transaction == NULL)
+ return FALSE;
+
+ if (!bus_activation_list_services (bus_connection_get_activation (connection), &services, &len))
+ return FALSE;
+
+ _dbus_transport_get_socket_fd (dbus_connection_get_transport(connection), &fd);
+ _dbus_string_init(&name);
+
+ for(i=0; i<len; i++)
+ {
+ if(!register_kdbus_policy(services[i], fd))
+ goto out;
+
+ if (request_kdbus_name(fd, services[i], (DBUS_NAME_FLAG_ALLOW_REPLACEMENT | KDBUS_NAME_STARTER) , 0) < 0)
+ goto out;
+
+ if(!_dbus_string_append(&name, services[i]))
+ goto out;
+ if(!bus_registry_ensure (bus_connection_get_registry (connection), &name, connection,
+ (DBUS_NAME_FLAG_ALLOW_REPLACEMENT | KDBUS_NAME_STARTER), transaction, NULL))
+ goto out;
+ if(!_dbus_string_set_length(&name, 0))
+ goto out;
+ }
+ retval = TRUE;
+
+out:
+ if(retval == FALSE)
+ {
+ for(j=0; j<i; j++)
+ release_kdbus_name(fd, services[j], 0);
+ }
+ dbus_free_string_array (services);
+ _dbus_string_free(&name);
+ bus_transaction_cancel_and_free(transaction);
+ return retval;
+}
+
+dbus_bool_t update_kdbus_starters(DBusConnection* connection)
+{
+ dbus_bool_t retval = FALSE;
+ DBusList **services_old;
+ DBusList *link;
+ BusService *service = NULL;
+ BusTransaction *transaction;
+ int fd;
+
+ transaction = bus_transaction_new (bus_connection_get_context(connection));
+ if (transaction == NULL)
+ return FALSE;
+
+ if(!_dbus_transport_get_socket_fd(dbus_connection_get_transport(connection), &fd))
+ goto out;
+
+ services_old = bus_connection_get_services_owned(connection);
+ link = _dbus_list_get_first_link(services_old);
+ link = _dbus_list_get_next_link (services_old, link); //skip org.freedesktop.DBus which is not starter
+
+ while (link != NULL)
+ {
+ int ret;
+
+ service = (BusService*) link->data;
+ if(service == NULL)
+ goto out;
+
+ ret = release_kdbus_name(fd, bus_service_get_name(service), 0);
+
+ if (ret == DBUS_RELEASE_NAME_REPLY_RELEASED)
+ {
+ if(!bus_service_remove_owner(service, connection, transaction, NULL))
+ _dbus_verbose ("Unable to remove\n");
+ }
+ else if(ret < 0)
+ goto out;
+
+ link = _dbus_list_get_next_link (services_old, link);
+ }
+
+ if(!register_kdbus_starters(connection))
+ {
+ _dbus_verbose ("Registering kdbus starters for dbus activatable names failed!\n");
+ goto out;
+ }
+ retval = TRUE;
+
+out:
+ bus_transaction_cancel_and_free(transaction);
+ return retval;
+}
+
+/*
+static dbus_bool_t remove_conn_if_name_match (DBusConnection *connection, void *data)
+{
+ if(!strcmp(bus_connection_get_name(connection), (char*)data))
+ {
+ bus_connection_disconnected(connection);
+ return FALSE; //this is to break foreach function
+ }
+ return TRUE;
+}*/
+
+void handleNameOwnerChanged(DBusMessage *msg, BusTransaction *transaction, DBusConnection *connection)
+{
+ const char *name, *old, *new;
+
+ if(!dbus_message_get_args(msg, NULL, DBUS_TYPE_STRING, &name, DBUS_TYPE_STRING, &old, DBUS_TYPE_STRING, &new, DBUS_TYPE_INVALID))
+ {
+ _dbus_verbose ("Couldn't get args of NameOwnerChanged signal: .\n");//, error.message);
+ return;
+ }
+
+ _dbus_verbose ("Got NameOwnerChanged signal:\nName: %s\nOld: %s\nNew: %s\n", name, old, new);
+
+ if(!strncmp(name, ":1.", 3))/*if it starts from :1. it is unique name - this might be IdRemoved info*/
+ {
+ if(!strcmp(name, old)) //yes it is - someone has disconnected
+ {
+ DBusConnection* conn;
+
+ conn = bus_connections_find_conn_by_name(bus_connection_get_connections(connection), name);
+ if(conn)
+ bus_connection_disconnected(conn);
+ }
+ }
+ else //it is well-known name
+ {
+ if((*old != 0) && (strcmp(old, ":1.1")))
+ {
+ DBusMessage *message;
+
+ if(bus_connections_find_conn_by_name(bus_connection_get_connections(connection), old) == NULL)
+ goto next;
+
+ _dbus_verbose ("Owner '%s' lost name '%s'. Sending NameLost.\n", old, name);
+
+ message = dbus_message_new_signal (DBUS_PATH_DBUS, DBUS_INTERFACE_DBUS, "NameLost");
+ if (message == NULL)
+ goto next;
+
+ if (!dbus_message_set_destination (message, old) || !dbus_message_append_args (message,
+ DBUS_TYPE_STRING, &name,
+ DBUS_TYPE_INVALID))
+ {
+ dbus_message_unref (message);
+ goto next;
+ }
+
+ bus_transaction_send_from_driver (transaction, connection, message);
+ dbus_message_unref (message);
+ }
+ next:
+ if((*new != 0) && (strcmp(new, ":1.1")))
+ {
+ DBusMessage *message;
+
+ _dbus_verbose ("Owner '%s' acquired name '%s'. Sending NameAcquired.\n", new, name);
+
+ message = dbus_message_new_signal (DBUS_PATH_DBUS, DBUS_INTERFACE_DBUS, "NameAcquired");
+ if (message == NULL)
+ return;
+
+ if (!dbus_message_set_destination (message, new) || !dbus_message_append_args (message,
+ DBUS_TYPE_STRING, &name,
+ DBUS_TYPE_INVALID))
+ {
+ dbus_message_unref (message);
+ return;
+ }
+
+ bus_transaction_send_from_driver (transaction, connection, message);
+ dbus_message_unref (message);
+ }
+ }
+}
projects / platform / upstream / dbus.git / blobdiff