client/src/pkgmgr_client_connection.c

   1 /*
   2  * Copyright (c) 2016 Samsung Electronics Co., Ltd. All rights reserved.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  *
  16  */
  17
  18 #include <stdio.h>
  19 #include <stdlib.h>
  20 #include <sys/types.h>
  21 #include <unistd.h>
  22
  23 #include <glib.h>
  24 #include <gio/gio.h>
  25
  26 #include "package-manager.h"
  27 #include "pkgmgr_client_debug.h"
  28 #include "pkgmgr_client_internal.h"
  29 #include "../../installer/pkgmgr_installer.h"
  30 #include "../../installer/pkgmgr_installer_config.h"
  31
  32 #define CONNECTION_RETRY_MAX 5
  33 #define CONNECTION_WAIT_USEC (1000000 / 2) /* 0.5 sec */
  34 #define CONNECTION_TIMEOUT_MSEC 5000 /* 5 sec */
  35 #define REGULAR_USER 5000
  36
  37 static int _is_system_user(void)
  38 {
  39         uid_t uid = getuid();
  40
  41         if (uid < REGULAR_USER)
  42                 return 1;
  43         else
  44                 return 0;
  45 }
  46
  47 static GBusType __get_bus_type(pkgmgr_client_type type)
  48 {
  49         if (type == PC_REQUEST || _is_system_user())
  50                 return G_BUS_TYPE_SYSTEM;
  51         else
  52                 return G_BUS_TYPE_SESSION;
  53 }
  54
  55 int pkgmgr_client_connection_connect(struct pkgmgr_client_t *pc)
  56 {
  57         GError *error = NULL;
  58         GBusType bus_type;
  59
  60 #if !GLIB_CHECK_VERSION(2, 35, 0)
  61         g_type_init();
  62 #endif
  63         bus_type = __get_bus_type(pc->pc_type);
  64         pc->conn = g_bus_get_sync(bus_type, NULL, &error);
  65         if (error) {
  66                 ERR("gdbus connection error (%s)", error->message);
  67                 g_error_free(error);
  68                 return PKGMGR_R_ECOMM;
  69         }
  70
  71         return PKGMGR_R_OK;
  72 }
  73
  74 void pkgmgr_client_connection_disconnect(struct pkgmgr_client_t *pc)
  75 {
  76         /* flush remaining buffer: blocking mode */
  77         g_dbus_connection_flush_sync(pc->conn, NULL, NULL);
  78         g_object_unref(pc->conn);
  79         pc->conn = NULL;
  80 }
  81
  82 struct signal_map {
  83         const char *signal_str;
  84         int signal_type;
  85 };
  86
  87 struct signal_map map[] = {
  88         {PKGMGR_INSTALLER_INSTALL_EVENT_STR, PKGMGR_CLIENT_STATUS_INSTALL},
  89         {PKGMGR_INSTALLER_UNINSTALL_EVENT_STR, PKGMGR_CLIENT_STATUS_UNINSTALL},
  90         {PKGMGR_INSTALLER_UPGRADE_EVENT_STR, PKGMGR_CLIENT_STATUS_UPGRADE},
  91         {PKGMGR_INSTALLER_CLEAR_EVENT_STR, PKGMGR_CLIENT_STATUS_CLEAR_DATA},
  92         {PKGMGR_INSTALLER_MOVE_EVENT_STR, PKGMGR_CLIENT_STATUS_MOVE},
  93         {PKGMGR_INSTALLER_INSTALL_PERCENT_KEY_STR,
  94                 PKGMGR_CLIENT_STATUS_INSTALL_PROGRESS},
  95         {PKGMGR_INSTALLER_GET_SIZE_KEY_STR, PKGMGR_CLIENT_STATUS_GET_SIZE},
  96         {PKGMGR_INSTALLER_CLEAR_CACHE_KEY_STR,
  97                 PKGMGR_CLIENT_STATUS_CLEAR_CACHE},
  98         {PKGMGR_INSTALLER_APP_ENABLE_EVENT_STR,
  99                 PKGMGR_CLIENT_STATUS_ENABLE_APP},
 100         {PKGMGR_INSTALLER_APP_DISABLE_EVENT_STR,
 101                 PKGMGR_CLIENT_STATUS_DISABLE_APP},
 102         {PKGMGR_INSTALLER_APP_ENABLE_SPLASH_SCREEN_EVENT_STR,
 103                 PKGMGR_CLIENT_STATUS_ENABLE_APP_SPLASH_SCREEN},
 104         {PKGMGR_INSTALLER_APP_DISABLE_SPLASH_SCREEN_EVENT_STR,
 105                 PKGMGR_CLIENT_STATUS_DISABLE_APP_SPLASH_SCREEN},
 106         {NULL, -1}
 107 };
 108
 109 static int __get_signal_type(const char *name)
 110 {
 111         int i;
 112
 113         if (name == NULL)
 114                 return -1;
 115
 116         for (i = 0; map[i].signal_str != NULL; i++) {
 117                 if (strcmp(map[i].signal_str, name) == 0)
 118                         return map[i].signal_type;
 119         }
 120
 121         return -1;
 122 }
 123
 124 static void __handle_size_info_callback(struct cb_info *cb_info,
 125                 const char *pkgid, const char *val)
 126 {
 127         pkg_size_info_t size_info;
 128         char buf[BUFMAX];
 129         char *saveptr;
 130         char *token;
 131         pkgmgr_total_pkg_size_info_receive_cb callback;
 132
 133         snprintf(buf, sizeof(buf), "%s", val);
 134
 135         DBG("%s, %s", pkgid, val);
 136
 137         token = strtok_r(buf, ":", &saveptr);
 138         if (token == NULL) {
 139                 ERR("failed to parse size info");
 140                 return;
 141         }
 142         size_info.data_size = atoll(token);
 143         token = strtok_r(NULL, ":", &saveptr);
 144         if (token == NULL) {
 145                 ERR("failed to parse size info");
 146                 return;
 147         }
 148         size_info.cache_size = atoll(token);
 149         token = strtok_r(NULL, ":", &saveptr);
 150         if (token == NULL) {
 151                 ERR("failed to parse size info");
 152                 return;
 153         }
 154         size_info.app_size = atoll(token);
 155         token = strtok_r(NULL, ":", &saveptr);
 156         if (token == NULL) {
 157                 ERR("failed to parse size info");
 158                 return;
 159         }
 160         size_info.ext_data_size = atoll(token);
 161         token = strtok_r(NULL, ":", &saveptr);
 162         if (token == NULL) {
 163                 ERR("failed to parse size info");
 164                 return;
 165         }
 166         size_info.ext_cache_size = atoll(token);
 167         token = strtok_r(NULL, ":", &saveptr);
 168         if (token == NULL) {
 169                 ERR("failed to parse size info");
 170                 return;
 171         }
 172         size_info.ext_app_size = atoll(token);
 173
 174         DBG("data: %lld, cache: %lld, app: %lld, ext_data: %lld, "
 175                         "ext_cache: %lld, ext_app: %lld",
 176                         size_info.data_size, size_info.cache_size,
 177                         size_info.app_size, size_info.ext_data_size,
 178                         size_info.ext_cache_size, size_info.ext_app_size);
 179
 180         if (strcmp(pkgid, PKG_SIZE_INFO_TOTAL) == 0) {
 181                 callback = (pkgmgr_total_pkg_size_info_receive_cb)
 182                         cb_info->size_info_cb;
 183                 callback(cb_info->client, &size_info, cb_info->data);
 184         } else {
 185                 cb_info->size_info_cb(cb_info->client, pkgid, &size_info,
 186                                 cb_info->data);
 187         }
 188 }
 189
 190 static void __signal_handler(GDBusConnection *conn, const gchar *sender_name,
 191                 const gchar *object_path, const gchar *interface_name,
 192                 const gchar *signal_name, GVariant *parameters,
 193                 gpointer user_data)
 194 {
 195         uid_t target_uid;
 196         char *req_id;
 197         char *pkg_type = NULL;
 198         char *appid = NULL;
 199         char *pkgid = NULL;
 200         char *key = NULL;
 201         char *val = NULL;
 202         struct cb_info *cb_info = (struct cb_info *)user_data;
 203         GVariantIter *iter = NULL;
 204         int signal_type;
 205
 206         g_variant_get(parameters, "(u&sa(sss)&s&s)", &target_uid, &req_id, &iter,
 207                         &key, &val);
 208         while (g_variant_iter_loop(iter, "(&s&s&s)", &pkgid, &appid, &pkg_type)) {
 209                 if (cb_info->req_key) {
 210                         if (strcmp(cb_info->req_key, req_id) != 0)
 211                                 continue;
 212                 } else {
 213                         signal_type = __get_signal_type(signal_name);
 214                         if (signal_type < 0 || !(cb_info->status_type & signal_type)) {
 215                                 g_variant_iter_free(iter);
 216                                 return;
 217                         }
 218                 }
 219
 220                 /* each cb_data can only has one callback */
 221                 if (cb_info->event_cb) {
 222                         cb_info->event_cb(target_uid, cb_info->req_id,
 223                                         pkg_type, pkgid, key, val, NULL, cb_info->data);
 224                 } else if (cb_info->app_event_cb && strcmp(appid, "") != 0) {
 225                         cb_info->app_event_cb(target_uid, cb_info->req_id,
 226                                         pkg_type, pkgid, appid, key, val, NULL,
 227                                         cb_info->data);
 228                 } else if (cb_info->size_info_cb)
 229                         __handle_size_info_callback(cb_info, pkgid, val);
 230
 231                 /* TODO: unsubscribe request callback */
 232         }
 233         g_variant_iter_free(iter);
 234 }
 235
 236 static void __set_signal_list(int event, GList **signal_list)
 237 {
 238         int i;
 239         if (event == PKGMGR_CLIENT_STATUS_ALL)
 240                 return;
 241
 242         for (i = 0; map[i].signal_str != NULL; i++) {
 243                 if (event & map[i].signal_type)
 244                         *signal_list = g_list_append(*signal_list,
 245                                         (char *)map[i].signal_str);
 246         }
 247 }
 248
 249 static int __subscribe_signal(struct pkgmgr_client_t *pc,
 250                 struct cb_info *cb_info, const char *signal)
 251 {
 252         guint sid = g_dbus_connection_signal_subscribe(pc->conn, NULL,
 253                         PKGMGR_INSTALLER_DBUS_INTERFACE, signal,
 254                         PKGMGR_INSTALLER_DBUS_OBJECT_PATH, NULL,
 255                         G_DBUS_SIGNAL_FLAGS_NONE, __signal_handler,
 256                         (gpointer)cb_info, NULL);
 257         if (!sid) {
 258                 ERR("failed to subscribe singal");
 259                 return PKGMGR_R_ERROR;
 260         }
 261         cb_info->sid_list = g_list_append(cb_info->sid_list,
 262                         GUINT_TO_POINTER(sid));
 263
 264         return PKGMGR_R_OK;
 265 }
 266
 267 int pkgmgr_client_connection_set_callback(struct pkgmgr_client_t *pc,
 268                 struct cb_info *cb_info)
 269 {
 270         GList *signal_list = NULL;
 271         GList *tmp_list = NULL;
 272         int ret;
 273         char *signal_type;
 274         __set_signal_list(pc->status_type, &signal_list);
 275
 276         if (g_list_length(signal_list) == 0)
 277                 return __subscribe_signal(pc, cb_info, NULL);
 278
 279         for (tmp_list = signal_list; tmp_list != NULL;
 280                         tmp_list = g_list_next(tmp_list)) {
 281                 signal_type = (char *)tmp_list->data;
 282                 ret = __subscribe_signal(pc, cb_info, signal_type);
 283                 if (ret != 0) {
 284                         g_list_free(signal_list);
 285                         return PKGMGR_R_ERROR;
 286                 }
 287         }
 288
 289         g_list_free(signal_list);
 290         return PKGMGR_R_OK;
 291 }
 292
 293 void pkgmgr_client_connection_unset_callback(struct pkgmgr_client_t *pc,
 294                 struct cb_info *cb_info)
 295 {
 296         GList *tmp = NULL;
 297         guint tmp_sid;
 298         for (tmp = cb_info->sid_list; tmp != NULL; tmp = g_list_next(tmp)) {
 299                 tmp_sid = GPOINTER_TO_UINT(tmp->data);
 300                 g_dbus_connection_signal_unsubscribe(pc->conn, tmp_sid);
 301         }
 302 }
 303
 304 int pkgmgr_client_connection_send_request(struct pkgmgr_client_t *pc,
 305                 const char *method, GVariant *params, GVariant **result)
 306 {
 307         GError *error = NULL;
 308         GDBusProxy *proxy;
 309         GVariant *r = NULL;
 310         int retry_cnt = 0;
 311         int ret = PKGMGR_R_ECOMM;
 312
 313         /* convert floating ref into normal ref */
 314         g_variant_ref_sink(params);
 315
 316         do {
 317                 proxy = g_dbus_proxy_new_sync(pc->conn,
 318                                 G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES,
 319                                 NULL, PKGMGR_DBUS_SERVICE,
 320                                 PKGMGR_DBUS_OBJECT_PATH,
 321                                 PKGMGR_DBUS_INTERFACE, NULL, &error);
 322                 if (proxy == NULL) {
 323                         ERR("failed to get proxy object, sleep and retry[%s]",
 324                                         error->message);
 325                         g_error_free(error);
 326                         error = NULL;
 327                         usleep(CONNECTION_WAIT_USEC);
 328                         retry_cnt++;
 329                         continue;
 330                 }
 331
 332                 r = g_dbus_proxy_call_sync(proxy, method, params,
 333                                 G_DBUS_CALL_FLAGS_NONE,
 334                                 CONNECTION_TIMEOUT_MSEC, NULL, &error);
 335                 g_object_unref(proxy);
 336                 if (error && error->code == G_DBUS_ERROR_ACCESS_DENIED) {
 337                         ERR("failed to send request, privilege denied[%s]",
 338                                         error->message);
 339                         g_error_free(error);
 340                         ret = PKGMGR_R_EPRIV;
 341                         break;
 342                 }
 343                 if (r) {
 344                         *result = r;
 345                         ret = PKGMGR_R_OK;
 346                         break;
 347                 }
 348
 349                 ERR("failed to send request, sleep and retry[%s]",
 350                                 error->message);
 351                 g_error_free(error);
 352                 error = NULL;
 353                 usleep(CONNECTION_WAIT_USEC);
 354                 retry_cnt++;
 355         } while (retry_cnt <= CONNECTION_RETRY_MAX);
 356
 357         /* decrease ref count to 0 to free resource */
 358         g_variant_unref(params);
 359
 360         return ret;
 361 }