client/dbus_helpers.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2013  Intel Corporation. All rights reserved.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  20  *
  21  */
  22
  23 #include <stdio.h>
  24 #include <errno.h>
  25 #include <inttypes.h>
  26 #include <glib.h>
  27
  28 #include "input.h"
  29 #include "dbus_helpers.h"
  30
  31 #define TIMEOUT         120000
  32
  33 void __connmanctl_dbus_print(DBusMessageIter *iter, const char *pre,
  34                 const char *dict, const char *sep)
  35 {
  36         int arg_type;
  37         dbus_bool_t b;
  38         unsigned char c;
  39         dbus_uint16_t u16;
  40         dbus_uint32_t u;
  41         dbus_int32_t i;
  42         dbus_uint64_t u64;
  43         double d;
  44
  45         char *str;
  46         DBusMessageIter entry;
  47
  48         if (!pre)
  49                 pre = "";
  50
  51         while ((arg_type = dbus_message_iter_get_arg_type(iter))
  52                         != DBUS_TYPE_INVALID) {
  53
  54                 fprintf(stdout, "%s", pre);
  55
  56                 switch (arg_type) {
  57                 case DBUS_TYPE_STRUCT:
  58                         fprintf(stdout, "{ ");
  59                         dbus_message_iter_recurse(iter, &entry);
  60                         __connmanctl_dbus_print(&entry, "", "=", " ");
  61                         fprintf(stdout, " }");
  62                         break;
  63
  64                 case DBUS_TYPE_ARRAY:
  65                         fprintf(stdout, "[ ");
  66
  67                         dbus_message_iter_recurse(iter, &entry);
  68                         __connmanctl_dbus_print(&entry, "", "=", ", ");
  69
  70                         fprintf(stdout, " ]");
  71                         break;
  72
  73                 case DBUS_TYPE_DICT_ENTRY:
  74
  75                         dbus_message_iter_recurse(iter, &entry);
  76                         __connmanctl_dbus_print(&entry, "", dict, dict);
  77                         break;
  78
  79                 case DBUS_TYPE_STRING:
  80                 case DBUS_TYPE_OBJECT_PATH:
  81                         dbus_message_iter_get_basic(iter, &str);
  82                         fprintf(stdout, "%s", str);
  83                         break;
  84
  85                 case DBUS_TYPE_VARIANT:
  86                         dbus_message_iter_recurse(iter, &entry);
  87                         __connmanctl_dbus_print(&entry, pre, dict, sep);
  88                         break;
  89
  90                 case DBUS_TYPE_BOOLEAN:
  91                         dbus_message_iter_get_basic(iter, &b);
  92                         if (!b)
  93                                 fprintf(stdout, "False");
  94                         else
  95                                 fprintf(stdout, "True");
  96                         break;
  97
  98                 case DBUS_TYPE_BYTE:
  99                         dbus_message_iter_get_basic(iter, &c);
 100                         fprintf(stdout, "%d", c);
 101                         break;
 102
 103                 case DBUS_TYPE_UINT16:
 104                         dbus_message_iter_get_basic(iter, &u16);
 105                         fprintf(stdout, "%u", u16);
 106                         break;
 107
 108                 case DBUS_TYPE_UINT32:
 109                         dbus_message_iter_get_basic(iter, &u);
 110                         fprintf(stdout, "%d", u);
 111                         break;
 112
 113                 case DBUS_TYPE_INT32:
 114                         dbus_message_iter_get_basic(iter, &i);
 115                         fprintf(stdout, "%d", i);
 116                         break;
 117
 118                 case DBUS_TYPE_UINT64:
 119                         dbus_message_iter_get_basic(iter, &u64);
 120                         fprintf(stdout, "%"PRIu64, u64);
 121                         break;
 122
 123                 case DBUS_TYPE_DOUBLE:
 124                         dbus_message_iter_get_basic(iter, &d);
 125                         fprintf(stdout, "%f", d);
 126                         break;
 127
 128                 default:
 129                         fprintf(stdout, "<type %c>", arg_type);
 130                         break;
 131                 }
 132
 133                 if (dbus_message_iter_has_next(iter))
 134                         fprintf(stdout, "%s", sep);
 135
 136                 dbus_message_iter_next(iter);
 137         }
 138 }
 139
 140 struct dbus_callback {
 141         connmanctl_dbus_method_return_func_t cb;
 142         void *user_data;
 143 };
 144
 145 static void dbus_method_reply(DBusPendingCall *call, void *user_data)
 146 {
 147         struct dbus_callback *callback = user_data;
 148         int res = 0;
 149         DBusMessage *reply;
 150         DBusMessageIter iter;
 151
 152         __connmanctl_save_rl();
 153
 154         reply = dbus_pending_call_steal_reply(call);
 155         dbus_pending_call_unref(call);
 156         if (dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR) {
 157                 DBusError err;
 158
 159                 dbus_error_init(&err);
 160                 dbus_set_error_from_message(&err, reply);
 161
 162                 callback->cb(NULL, err.message, callback->user_data);
 163
 164                 dbus_error_free(&err);
 165                 goto end;
 166         }
 167
 168         dbus_message_iter_init(reply, &iter);
 169         res = callback->cb(&iter, NULL, callback->user_data);
 170
 171 end:
 172         __connmanctl_redraw_rl();
 173         if (__connmanctl_is_interactive() == false && res != -EINPROGRESS)
 174                 __connmanctl_quit();
 175
 176         g_free(callback);
 177         dbus_message_unref(reply);
 178 }
 179
 180 static int send_method_call(DBusConnection *connection,
 181                 DBusMessage *message, connmanctl_dbus_method_return_func_t cb,
 182                 void *user_data)
 183 {
 184         int res = -ENXIO;
 185         DBusPendingCall *call;
 186         struct dbus_callback *callback;
 187
 188         if (!dbus_connection_send_with_reply(connection, message, &call, TIMEOUT))
 189                 goto end;
 190
 191         if (!call)
 192                 goto end;
 193
 194         if (cb) {
 195                 callback = g_new0(struct dbus_callback, 1);
 196                 callback->cb = cb;
 197                 callback->user_data = user_data;
 198                 dbus_pending_call_set_notify(call, dbus_method_reply,
 199                                 callback, NULL);
 200                 res = -EINPROGRESS;
 201         }
 202
 203 end:
 204         dbus_message_unref(message);
 205         return res;
 206 }
 207
 208 static int append_variant(DBusMessageIter *iter, const char *property,
 209                 int type, void *value)
 210 {
 211         DBusMessageIter variant;
 212         char *type_str;
 213
 214         switch(type) {
 215         case DBUS_TYPE_BOOLEAN:
 216                 type_str = DBUS_TYPE_BOOLEAN_AS_STRING;
 217                 break;
 218         case DBUS_TYPE_BYTE:
 219                 type_str = DBUS_TYPE_BYTE_AS_STRING;
 220                 break;
 221         case DBUS_TYPE_STRING:
 222                 type_str = DBUS_TYPE_STRING_AS_STRING;
 223                 break;
 224         case DBUS_TYPE_INT32:
 225                 type_str = DBUS_TYPE_INT32_AS_STRING;
 226                 break;
 227         default:
 228                 return -EOPNOTSUPP;
 229         }
 230
 231         dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING, &property);
 232         dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type_str,
 233                         &variant);
 234         dbus_message_iter_append_basic(&variant, type, value);
 235         dbus_message_iter_close_container(iter, &variant);
 236
 237         return 0;
 238 }
 239
 240 int __connmanctl_dbus_method_call(DBusConnection *connection,
 241                 const char *service, const char *path, const char *interface,
 242                 const char *method, connmanctl_dbus_method_return_func_t cb,
 243                 void *user_data, connmanctl_dbus_append_func_t append_func,
 244                 void *append_data)
 245 {
 246         DBusMessage *message;
 247         DBusMessageIter iter;
 248
 249         message = dbus_message_new_method_call(service, path, interface,
 250                         method);
 251
 252         if (!message)
 253                 return -ENOMEM;
 254
 255         if (append_func) {
 256                 dbus_message_iter_init_append(message, &iter);
 257                 append_func(&iter, append_data);
 258         }
 259
 260         return send_method_call(connection, message, cb, user_data);
 261 }
 262
 263 int __connmanctl_dbus_set_property(DBusConnection *connection,
 264                 const char *path, const char *interface,
 265                 connmanctl_dbus_method_return_func_t cb, void * user_data,
 266                 const char *property, int type, void *value)
 267 {
 268         DBusMessage *message;
 269         DBusMessageIter iter;
 270
 271         message = dbus_message_new_method_call("net.connman", path,
 272                         interface, "SetProperty");
 273
 274         if (!message)
 275                 return -ENOMEM;
 276
 277         dbus_message_iter_init_append(message, &iter);
 278
 279         if (append_variant(&iter, property, type, value) < 0) {
 280                 dbus_message_unref(message);
 281                 return -EINVAL;
 282         }
 283
 284         return send_method_call(connection, message, cb, user_data);
 285 }
 286
 287 void __connmanctl_dbus_append_dict(DBusMessageIter *iter,
 288                 connmanctl_dbus_append_func_t append_fn, void *append_data)
 289 {
 290         DBusMessageIter dict;
 291
 292         dbus_message_iter_open_container(iter, DBUS_TYPE_ARRAY,
 293                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 294                         DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING
 295                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict);
 296
 297         if (append_fn)
 298                 append_fn(&dict, append_data);
 299
 300         dbus_message_iter_close_container(iter, &dict);
 301 }
 302
 303 void __connmanctl_dbus_append_dict_entry(DBusMessageIter *iter,
 304                 const char *property, int type, void *value)
 305 {
 306         DBusMessageIter dict_entry;
 307
 308         dbus_message_iter_open_container(iter, DBUS_TYPE_DICT_ENTRY, NULL,
 309                         &dict_entry);
 310
 311         append_variant(&dict_entry, property, type, value);
 312
 313         dbus_message_iter_close_container(iter, &dict_entry);
 314 }
 315
 316 int __connmanctl_dbus_set_property_dict(DBusConnection *connection,
 317                 const char *path, const char *interface,
 318                 connmanctl_dbus_method_return_func_t cb, void *user_data,
 319                 const char *property, int type,
 320                 connmanctl_dbus_append_func_t append_fn,
 321                 void *append_user_data)
 322 {
 323         DBusMessage *message;
 324         DBusMessageIter iter, variant, dict;
 325
 326         message = dbus_message_new_method_call("net.connman", path,
 327                         interface, "SetProperty");
 328
 329         if (!message)
 330                 return -ENOMEM;
 331
 332         dbus_message_iter_init_append(message, &iter);
 333         dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &property);
 334         dbus_message_iter_open_container(&iter, DBUS_TYPE_VARIANT,
 335                         DBUS_TYPE_ARRAY_AS_STRING
 336                                 DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 337                                         DBUS_TYPE_STRING_AS_STRING
 338                                         DBUS_TYPE_VARIANT_AS_STRING
 339                                 DBUS_DICT_ENTRY_END_CHAR_AS_STRING,
 340                         &variant);
 341
 342         dbus_message_iter_open_container(&variant, DBUS_TYPE_ARRAY,
 343                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 344                                 DBUS_TYPE_STRING_AS_STRING
 345                                 DBUS_TYPE_VARIANT_AS_STRING
 346                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING,
 347                         &dict);
 348
 349         append_fn(&dict, append_user_data);
 350
 351         dbus_message_iter_close_container(&variant, &dict);
 352         dbus_message_iter_close_container(&iter, &variant);
 353
 354         return send_method_call(connection, message, cb, user_data);
 355 }
 356
 357 static void append_variant_array(DBusMessageIter *iter, const char *property,
 358                 connmanctl_dbus_append_func_t append_fn,
 359                 void *append_user_data)
 360 {
 361         DBusMessageIter variant, array;
 362
 363         dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING, &property);
 364         dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT,
 365                         DBUS_TYPE_ARRAY_AS_STRING
 366                                 DBUS_TYPE_STRING_AS_STRING,
 367                         &variant);
 368
 369         dbus_message_iter_open_container(&variant, DBUS_TYPE_ARRAY,
 370                         DBUS_TYPE_STRING_AS_STRING, &array);
 371
 372         append_fn(&array, append_user_data);
 373
 374         dbus_message_iter_close_container(&variant, &array);
 375         dbus_message_iter_close_container(iter, &variant);
 376 }
 377
 378 void __connmanctl_dbus_append_dict_string_array(DBusMessageIter *iter,
 379                 const char *property, connmanctl_dbus_append_func_t append_fn,
 380                 void *append_user_data)
 381 {
 382         DBusMessageIter dict_entry;
 383
 384         dbus_message_iter_open_container(iter, DBUS_TYPE_DICT_ENTRY, NULL,
 385                         &dict_entry);
 386
 387         append_variant_array(&dict_entry, property, append_fn,
 388                         append_user_data);
 389
 390         dbus_message_iter_close_container(iter, &dict_entry);
 391 }
 392
 393 int __connmanctl_dbus_set_property_array(DBusConnection *connection,
 394                 const char *path, const char *interface,
 395                 connmanctl_dbus_method_return_func_t cb, void *user_data,
 396                 const char *property, int type,
 397                 connmanctl_dbus_append_func_t append_fn,
 398                 void *append_user_data)
 399 {
 400         DBusMessage *message;
 401         DBusMessageIter iter;
 402
 403         if (type != DBUS_TYPE_STRING)
 404                 return -EOPNOTSUPP;
 405
 406         message = dbus_message_new_method_call("net.connman", path,
 407                         interface, "SetProperty");
 408
 409         if (!message)
 410                 return -ENOMEM;
 411
 412         dbus_message_iter_init_append(message, &iter);
 413
 414         append_variant_array(&iter, property, append_fn, append_user_data);
 415
 416         return send_method_call(connection, message, cb, user_data);
 417 }
 418
 419 int __connmanctl_dbus_session_change(DBusConnection *connection,
 420                 const char *session_path,
 421                 connmanctl_dbus_method_return_func_t cb, void * user_data,
 422                 const char *property, int type, void *value)
 423 {
 424         DBusMessage *message;
 425         DBusMessageIter iter;
 426
 427         message = dbus_message_new_method_call("net.connman", session_path,
 428                         "net.connman.Session", "Change");
 429
 430         if (!message)
 431                 return -ENOMEM;
 432
 433         dbus_message_iter_init_append(message, &iter);
 434
 435         if (append_variant(&iter, property, type, value) < 0) {
 436                 dbus_message_unref(message);
 437                 return -EINVAL;
 438         }
 439
 440         return send_method_call(connection, message, cb, user_data);
 441 }
 442
 443 int __connmanctl_dbus_session_change_array(DBusConnection *connection,
 444                 const char *session_path,
 445                 connmanctl_dbus_method_return_func_t cb, void *user_data,
 446                 const char *property,
 447                 connmanctl_dbus_append_func_t append_fn,
 448                 void *append_user_data)
 449 {
 450         DBusMessage *message;
 451         DBusMessageIter iter;
 452
 453         message = dbus_message_new_method_call("net.connman", session_path,
 454                         "net.connman.Session", "Change");
 455
 456         if (!message)
 457                 return -ENOMEM;
 458
 459         dbus_message_iter_init_append(message, &iter);
 460
 461         append_variant_array(&iter, property, append_fn, append_user_data);
 462
 463         return send_method_call(connection, message, cb, user_data);
 464 }