comm/comm_client_gdbus.c

   1 /*
   2  * slp-pkgmgr
   3  *
   4  * Copyright (c) 2000 - 2011 Samsung Electronics Co., Ltd. All rights reserved.
   5  *
   6  * Contact: Jayoun Lee <airjany@samsung.com>, Sewook Park <sewook7.park@samsung.com>,
   7  * Jaeho Lee <jaeho81.lee@samsung.com>, Shobhit Srivastava <shobhit.s@samsung.com>
   8  *
   9  * Licensed under the Apache License, Version 2.0 (the "License");
  10  * you may not use this file except in compliance with the License.
  11  * You may obtain a copy of the License at
  12  *
  13  * http://www.apache.org/licenses/LICENSE-2.0
  14  *
  15  * Unless required by applicable law or agreed to in writing, software
  16  * distributed under the License is distributed on an "AS IS" BASIS,
  17  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  18  * See the License for the specific language governing permissions and
  19  * limitations under the License.
  20  *
  21  */
  22
  23
  24 /*
  25  * comm_client_gdbus.c
  26  * comm_client library using gdbus
  27  */
  28
  29 #include <glib.h>
  30 #include <gio/gio.h>
  31 #include <stdbool.h>
  32 #include <stdio.h>
  33 #include <string.h>
  34
  35 #include <glib.h>
  36 #include <gio/gio.h>
  37
  38 #include "comm_config.h"
  39 #include "comm_client.h"
  40 #include "comm_debug.h"
  41
  42 /*******************
  43  * ADT description
  44  */
  45
  46 /* Storing status_cb */
  47 struct signal_callback_data {
  48         int type;
  49         status_cb cb;
  50         void *cb_data;
  51 };
  52
  53 /* comm_client ADT */
  54 struct comm_client {
  55         guint subscription_id;
  56         GDBusConnection *conn;
  57         struct signal_callback_data *sig_cb_data;
  58 };
  59
  60 static int __get_signal_type(const char *name)
  61 {
  62         if (name == NULL)
  63                 return -1;
  64
  65         if (strcmp(name, COMM_STATUS_BROADCAST_SIGNAL_STATUS) == 0)
  66                 return COMM_STATUS_BROADCAST_ALL;
  67         else if (strcmp(name, COMM_STATUS_BROADCAST_EVENT_INSTALL) == 0)
  68                 return COMM_STATUS_BROADCAST_INSTALL;
  69         else if (strcmp(name, COMM_STATUS_BROADCAST_EVENT_UNINSTALL) == 0)
  70                 return COMM_STATUS_BROADCAST_UNINSTALL;
  71         else if (strcmp(name, COMM_STATUS_BROADCAST_EVENT_MOVE) == 0)
  72                 return COMM_STATUS_BROADCAST_MOVE;
  73         else if (strcmp(name, COMM_STATUS_BROADCAST_EVENT_INSTALL_PROGRESS) == 0)
  74                 return COMM_STATUS_BROADCAST_INSTALL_PROGRESS;
  75         else if (strcmp(name, COMM_STATUS_BROADCAST_EVENT_UPGRADE) == 0)
  76                 return COMM_STATUS_BROADCAST_UPGRADE;
  77         else if (strcmp(name, COMM_STATUS_BROADCAST_EVENT_GET_SIZE) == 0)
  78                 return COMM_STATUS_BROADCAST_GET_SIZE;
  79         else
  80                 return -1;
  81 }
  82
  83 /**
  84  * signal handler filter
  85  * Filter signal, and run user callback
  86  */
  87 void _on_signal_handle_filter(GDBusConnection *conn,
  88                 const gchar *sender_name,
  89                 const gchar *object_path,
  90                 const gchar *interface_name,
  91                 const gchar *signal_name,
  92                 GVariant *parameters,
  93                 gpointer user_data)
  94 {
  95         if (interface_name && strcmp(interface_name, "org.tizen.pkgmgr.signal")) {
  96                 DBG("Interface name did not match. Drop the message");
  97                 return;
  98         }
  99
 100         int status_type;
 101         /* Values to be received by signal */
 102         uid_t target_uid;
 103         char *req_id = NULL;
 104         char *pkg_type = NULL;
 105         char *pkgid = NULL;
 106         char *key = NULL;
 107         char *val = NULL;
 108
 109         /* User's signal handler */
 110         struct signal_callback_data *sig_cb_data;
 111         if (user_data)
 112                 sig_cb_data = (struct signal_callback_data *)user_data;
 113         else
 114                 return;
 115
 116         status_type = __get_signal_type(signal_name);
 117         if (status_type < 0 || !(status_type & sig_cb_data->type))
 118                 return;
 119
 120         g_variant_get(parameters, "(u&s&s&s&s&s)",
 121                                 &target_uid, &req_id, &pkg_type, &pkgid, &key, &val);
 122
 123         /* Run signal callback if exist */
 124         if (sig_cb_data && sig_cb_data->cb)
 125                 sig_cb_data->cb(sig_cb_data->cb_data, target_uid, req_id,
 126                                 pkg_type, pkgid, key, val);
 127
 128         return;
 129 }
 130
 131 /**
 132  * signal_callback_data free function
 133  * Just free it!
 134  */
 135 void _free_sig_cb_data(void *data)
 136 {
 137         struct signal_callback_data *sig_cb_data = NULL;
 138         sig_cb_data = (struct signal_callback_data *)data;
 139         free(sig_cb_data);
 140 }
 141
 142 /*******************
 143  * API description
 144  */
 145
 146 /**
 147  * Create a new comm_client object
 148  */
 149 comm_client *comm_client_new(void)
 150 {
 151         GError *error = NULL;
 152         comm_client *cc = NULL;
 153
 154         /* Allocate memory for ADT:comm_client */
 155 #if !GLIB_CHECK_VERSION(2,35,0)
 156         g_type_init();
 157 #endif
 158         cc = calloc(1, sizeof(comm_client));
 159         if (NULL == cc) {
 160                 ERR("No memory");
 161                 return NULL;
 162         }
 163
 164         /* Connect to gdbus. Gets shared BUS */
 165         cc->conn = g_bus_get_sync(G_BUS_TYPE_SYSTEM, NULL, &error);
 166         if (error) {
 167                 ERR("gdbus connection error (%s)", error->message);
 168                 g_error_free(error);
 169                 goto ERROR_CLEANUP;
 170         }
 171         if (NULL == cc->conn) {
 172                 ERR("gdbus connection is not set, even gdbus error isn't raised");
 173                 goto ERROR_CLEANUP;
 174         }
 175         return cc;
 176
 177  ERROR_CLEANUP:
 178         if (cc)
 179                 free(cc);
 180         return NULL;
 181 }
 182
 183 /**
 184  * Free comm_client object
 185  */
 186 int comm_client_free(comm_client *cc)
 187 {
 188         if (!cc)
 189                 return -1;
 190         if (!(cc->conn) || g_dbus_connection_is_closed(cc->conn)) {
 191                 ERR("Invalid gdbus connection");
 192                 return -2;
 193         }
 194
 195         if (cc->sig_cb_data) {
 196                 g_dbus_connection_signal_unsubscribe(cc->conn, cc->subscription_id);
 197                 /* TODO: Is it needed to free cc->sig_cb_data here? */
 198                 /* _free_sig_cb_data(cc->sig_cb_data); */
 199         }
 200
 201         /* Cleanup ADT */
 202         /* flush remaining buffer: blocking mode */
 203         g_dbus_connection_flush_sync(cc->conn, NULL, NULL);
 204
 205         /* Free signal filter if signal callback is exist */
 206
 207         /* just unref because it is shared BUS.
 208         If ref count is 0 it will get free'd automatically
 209         */
 210         g_object_unref(cc->conn);
 211         free(cc);
 212
 213         return 0;
 214 }
 215
 216 /**
 217  * Request a message
 218  */
 219 int
 220 comm_client_request(comm_client *cc, const char *req_id, const int req_type,
 221                 const char *pkg_type, const char *pkgid, const char *args,
 222                 uid_t uid, int is_block)
 223 {
 224         GError *error = NULL;
 225         gint rc = -1;
 226         GDBusProxy *proxy;
 227         GVariant *result;
 228
 229         proxy = g_dbus_proxy_new_sync(cc->conn, G_DBUS_PROXY_FLAGS_NONE, NULL,
 230                         COMM_PKGMGR_DBUS_SERVICE, COMM_PKGMGR_DBUS_OBJECT_PATH,
 231                         COMM_PKGMGR_DBUS_INTERFACE, NULL, &error);
 232         if (proxy == NULL) {
 233                 ERR("failed to get proxy object: %s", error->message);
 234                 g_error_free(error);
 235                 return -1;
 236         }
 237
 238         /* Assign default values if NULL (NULL is not allowed) */
 239         if (req_id == NULL)
 240                 req_id = "tmp_reqid";
 241         if (pkg_type == NULL)
 242                 pkg_type = "none";
 243         if (pkgid == NULL)
 244                 pkgid = "";
 245         if (args == NULL)
 246                 args = "";
 247
 248         result = g_dbus_proxy_call_sync(proxy, "Request", g_variant_new("(sisssi)", req_id, req_type, pkg_type, pkgid, args, uid),
 249                         G_DBUS_CALL_FLAGS_NONE, -1, NULL, &error);
 250         if (result == NULL) {
 251                 ERR("failed to call %s", error->message);
 252                 g_error_free(error);
 253                 g_object_unref(proxy);
 254                 return -1;
 255         }
 256
 257         g_variant_get(result, "(i)", &rc);
 258
 259         return rc == 0 ? COMM_RET_OK : COMM_RET_ERROR;
 260 }
 261
 262 /**
 263  * Set a callback for status signal
 264  */
 265 int
 266 comm_client_set_status_callback(int comm_status_type, comm_client *cc, status_cb cb, void *cb_data)
 267 {
 268         int r = COMM_RET_ERROR;
 269
 270         if (NULL == cc)
 271                 return COMM_RET_ERROR;
 272
 273         /* Create new sig_cb_data */
 274         cc->sig_cb_data = calloc(1, sizeof(struct signal_callback_data));
 275         if ( cc->sig_cb_data ) {
 276                 (cc->sig_cb_data)->type = comm_status_type;
 277                 (cc->sig_cb_data)->cb = cb;
 278                 (cc->sig_cb_data)->cb_data = cb_data;
 279         } else {
 280                 r = COMM_RET_ERROR;
 281                 goto ERROR_CLEANUP;
 282         }
 283         /* Add a filter for signal */
 284         cc->subscription_id = g_dbus_connection_signal_subscribe(cc->conn, NULL, "org.tizen.pkgmgr.signal",
 285                 NULL, NULL, NULL, G_DBUS_SIGNAL_FLAGS_NONE,
 286                 _on_signal_handle_filter, (gpointer)cc->sig_cb_data, _free_sig_cb_data);
 287         if (!cc->subscription_id) {
 288                 ERR("Failed to add filter\n");
 289                 r = COMM_RET_ERROR;
 290                 goto ERROR_CLEANUP;
 291         }
 292
 293         return COMM_RET_OK;
 294
 295  ERROR_CLEANUP:
 296         ERR("General error");
 297         return r;
 298 }
 299