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 #define COMM_CLIENT_RETRY_MAX 5
  43 #define COMM_CLIENT_WAIT_USEC (1000000 / 2) /* 0.5 sec */
  44
  45 /*******************
  46  * ADT description
  47  */
  48
  49 /* Storing status_cb */
  50 struct signal_callback_data {
  51         int type;
  52         status_cb cb;
  53         void *cb_data;
  54 };
  55
  56 /* comm_client ADT */
  57 struct comm_client {
  58         guint subscription_id;
  59         GDBusConnection *conn;
  60         struct signal_callback_data *sig_cb_data;
  61 };
  62
  63 static int __get_signal_type(const char *name)
  64 {
  65         if (name == NULL)
  66                 return -1;
  67
  68         if (strcmp(name, COMM_STATUS_BROADCAST_SIGNAL_STATUS) == 0)
  69                 return COMM_STATUS_BROADCAST_ALL;
  70         else if (strcmp(name, COMM_STATUS_BROADCAST_EVENT_INSTALL) == 0)
  71                 return COMM_STATUS_BROADCAST_INSTALL;
  72         else if (strcmp(name, COMM_STATUS_BROADCAST_EVENT_UNINSTALL) == 0)
  73                 return COMM_STATUS_BROADCAST_UNINSTALL;
  74         else if (strcmp(name, COMM_STATUS_BROADCAST_EVENT_MOVE) == 0)
  75                 return COMM_STATUS_BROADCAST_MOVE;
  76         else if (strcmp(name, COMM_STATUS_BROADCAST_EVENT_INSTALL_PROGRESS) == 0)
  77                 return COMM_STATUS_BROADCAST_INSTALL_PROGRESS;
  78         else if (strcmp(name, COMM_STATUS_BROADCAST_EVENT_UPGRADE) == 0)
  79                 return COMM_STATUS_BROADCAST_UPGRADE;
  80         else if (strcmp(name, COMM_STATUS_BROADCAST_EVENT_GET_SIZE) == 0)
  81                 return COMM_STATUS_BROADCAST_GET_SIZE;
  82         else
  83                 return -1;
  84 }
  85
  86 /**
  87  * signal handler filter
  88  * Filter signal, and run user callback
  89  */
  90 void _on_signal_handle_filter(GDBusConnection *conn,
  91                 const gchar *sender_name,
  92                 const gchar *object_path,
  93                 const gchar *interface_name,
  94                 const gchar *signal_name,
  95                 GVariant *parameters,
  96                 gpointer user_data)
  97 {
  98         if (interface_name && strcmp(interface_name, "org.tizen.pkgmgr.signal")) {
  99                 DBG("Interface name did not match. Drop the message");
 100                 return;
 101         }
 102
 103         int status_type;
 104         /* Values to be received by signal */
 105         uid_t target_uid;
 106         char *req_id = NULL;
 107         char *pkg_type = NULL;
 108         char *pkgid = NULL;
 109         char *key = NULL;
 110         char *val = NULL;
 111
 112         /* User's signal handler */
 113         struct signal_callback_data *sig_cb_data;
 114         if (user_data)
 115                 sig_cb_data = (struct signal_callback_data *)user_data;
 116         else
 117                 return;
 118
 119         status_type = __get_signal_type(signal_name);
 120         if (status_type < 0 || !(status_type & sig_cb_data->type))
 121                 return;
 122
 123         g_variant_get(parameters, "(u&s&s&s&s&s)",
 124                                 &target_uid, &req_id, &pkg_type, &pkgid, &key, &val);
 125
 126         /* Run signal callback if exist */
 127         if (sig_cb_data && sig_cb_data->cb)
 128                 sig_cb_data->cb(sig_cb_data->cb_data, target_uid, req_id,
 129                                 pkg_type, pkgid, key, val);
 130
 131         return;
 132 }
 133
 134 /**
 135  * signal_callback_data free function
 136  * Just free it!
 137  */
 138 void _free_sig_cb_data(void *data)
 139 {
 140         struct signal_callback_data *sig_cb_data = NULL;
 141         sig_cb_data = (struct signal_callback_data *)data;
 142         free(sig_cb_data);
 143 }
 144
 145 /*******************
 146  * API description
 147  */
 148
 149 /**
 150  * Create a new comm_client object
 151  */
 152 comm_client *comm_client_new(void)
 153 {
 154         GError *error = NULL;
 155         comm_client *cc = NULL;
 156
 157         /* Allocate memory for ADT:comm_client */
 158 #if !GLIB_CHECK_VERSION(2,35,0)
 159         g_type_init();
 160 #endif
 161         cc = calloc(1, sizeof(comm_client));
 162         if (NULL == cc) {
 163                 ERR("No memory");
 164                 return NULL;
 165         }
 166
 167         /* Connect to gdbus. Gets shared BUS */
 168         cc->conn = g_bus_get_sync(G_BUS_TYPE_SYSTEM, NULL, &error);
 169         if (error) {
 170                 ERR("gdbus connection error (%s)", error->message);
 171                 g_error_free(error);
 172                 goto ERROR_CLEANUP;
 173         }
 174         if (NULL == cc->conn) {
 175                 ERR("gdbus connection is not set, even gdbus error isn't raised");
 176                 goto ERROR_CLEANUP;
 177         }
 178         return cc;
 179
 180  ERROR_CLEANUP:
 181         if (cc)
 182                 free(cc);
 183         return NULL;
 184 }
 185
 186 /**
 187  * Free comm_client object
 188  */
 189 int comm_client_free(comm_client *cc)
 190 {
 191         if (!cc)
 192                 return -1;
 193         if (!(cc->conn) || g_dbus_connection_is_closed(cc->conn)) {
 194                 ERR("Invalid gdbus connection");
 195                 return -2;
 196         }
 197
 198         if (cc->sig_cb_data) {
 199                 g_dbus_connection_signal_unsubscribe(cc->conn, cc->subscription_id);
 200                 /* TODO: Is it needed to free cc->sig_cb_data here? */
 201                 /* _free_sig_cb_data(cc->sig_cb_data); */
 202         }
 203
 204         /* Cleanup ADT */
 205         /* flush remaining buffer: blocking mode */
 206         g_dbus_connection_flush_sync(cc->conn, NULL, NULL);
 207
 208         /* Free signal filter if signal callback is exist */
 209
 210         /* just unref because it is shared BUS.
 211         If ref count is 0 it will get free'd automatically
 212         */
 213         g_object_unref(cc->conn);
 214         free(cc);
 215
 216         return 0;
 217 }
 218
 219 /**
 220  * Request a message
 221  */
 222 int
 223 comm_client_request(comm_client *cc, const char *req_id, const int req_type,
 224                 const char *pkg_type, const char *pkgid, const char *args,
 225                 uid_t uid, int is_block)
 226 {
 227         GError *error = NULL;
 228         gint rc = -1;
 229         GDBusProxy *proxy;
 230         GVariant *result = NULL;
 231         int retry_cnt = 0;
 232
 233         /* Assign default values if NULL (NULL is not allowed) */
 234         if (req_id == NULL)
 235                 req_id = "tmp_reqid";
 236         if (pkg_type == NULL)
 237                 pkg_type = "none";
 238         if (pkgid == NULL)
 239                 pkgid = "";
 240         if (args == NULL)
 241                 args = "";
 242
 243         do {
 244                 proxy = g_dbus_proxy_new_sync(cc->conn, G_DBUS_PROXY_FLAGS_NONE, NULL,
 245                                 COMM_PKGMGR_DBUS_SERVICE, COMM_PKGMGR_DBUS_OBJECT_PATH,
 246                                 COMM_PKGMGR_DBUS_INTERFACE, NULL, &error);
 247                 if (proxy == NULL) {
 248                         ERR("failed to get proxy object, sleep and retry[%s]", error->message);
 249                         g_error_free(error);
 250                         error = NULL;
 251                         usleep(COMM_CLIENT_WAIT_USEC);
 252                         retry_cnt++;
 253                         continue;
 254                 }
 255
 256                 result = g_dbus_proxy_call_sync(proxy, "Request", g_variant_new("(sisssi)", req_id, req_type, pkg_type, pkgid, args, uid),
 257                                 G_DBUS_CALL_FLAGS_NONE, -1, NULL, &error);
 258                 g_object_unref(proxy);
 259                 if (result)
 260                         break;
 261
 262                 ERR("failed to send request, sleep and retry[%s]", error->message);
 263                 g_error_free(error);
 264                 error = NULL;
 265                 usleep(COMM_CLIENT_WAIT_USEC);
 266                 retry_cnt++;
 267         } while (retry_cnt <= COMM_CLIENT_RETRY_MAX);
 268
 269         if (result == NULL)
 270                 return -1;
 271
 272         g_variant_get(result, "(i)", &rc);
 273         g_variant_unref(result);
 274
 275         return rc == 0 ? COMM_RET_OK : COMM_RET_ERROR;
 276 }
 277
 278 /**
 279  * Set a callback for status signal
 280  */
 281 int
 282 comm_client_set_status_callback(int comm_status_type, comm_client *cc, status_cb cb, void *cb_data)
 283 {
 284         int r = COMM_RET_ERROR;
 285
 286         if (NULL == cc)
 287                 return COMM_RET_ERROR;
 288
 289         /* Create new sig_cb_data */
 290         cc->sig_cb_data = calloc(1, sizeof(struct signal_callback_data));
 291         if ( cc->sig_cb_data ) {
 292                 (cc->sig_cb_data)->type = comm_status_type;
 293                 (cc->sig_cb_data)->cb = cb;
 294                 (cc->sig_cb_data)->cb_data = cb_data;
 295         } else {
 296                 r = COMM_RET_ERROR;
 297                 goto ERROR_CLEANUP;
 298         }
 299         /* Add a filter for signal */
 300         cc->subscription_id = g_dbus_connection_signal_subscribe(cc->conn, NULL, "org.tizen.pkgmgr.signal",
 301                 NULL, NULL, NULL, G_DBUS_SIGNAL_FLAGS_NONE,
 302                 _on_signal_handle_filter, (gpointer)cc->sig_cb_data, _free_sig_cb_data);
 303         if (!cc->subscription_id) {
 304                 ERR("Failed to add filter\n");
 305                 r = COMM_RET_ERROR;
 306                 goto ERROR_CLEANUP;
 307         }
 308
 309         return COMM_RET_OK;
 310
 311  ERROR_CLEANUP:
 312         ERR("General error");
 313         return r;
 314 }
 315