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 #ifndef DBUS_ERROR_UNKNOWN_METHOD
  34 #define DBUS_ERROR_UNKNOWN_METHOD "org.freedesktop.DBus.Error.UnknownMethod"
  35 #endif
  36
  37 #ifndef DBUS_ERROR_UNKNOWN_PROPERTY
  38 #define DBUS_ERROR_UNKNOWN_PROPERTY "org.freedesktop.DBus.Error.UnknownProperty"
  39 #endif
  40
  41 #ifndef DBUS_ERROR_UNKNOWN_OBJECT
  42 #define DBUS_ERROR_UNKNOWN_OBJECT "org.freedesktop.DBus.Error.UnknownObject"
  43 #endif
  44
  45 static int string2errno(const char *error)
  46 {
  47         if (!g_strcmp0(error, DBUS_ERROR_UNKNOWN_METHOD))
  48                 return -ENOTSUP;
  49         if (!g_strcmp0(error, DBUS_ERROR_UNKNOWN_PROPERTY))
  50                 return -ENOENT;
  51         if (!g_strcmp0(error, DBUS_ERROR_UNKNOWN_OBJECT))
  52                 return -ENODEV;
  53         if (!g_strcmp0(error, "net.connman.Error.AlreadyEnabled"))
  54                 return -EALREADY;
  55         if (!g_strcmp0(error, "net.connman.Error.AlreadyDisabled"))
  56                 return -EALREADY;
  57
  58         return -EINVAL;
  59 }
  60
  61 void __connmanctl_dbus_print(DBusMessageIter *iter, const char *pre,
  62                 const char *dict, const char *sep)
  63 {
  64         int arg_type;
  65         dbus_bool_t b;
  66         unsigned char c;
  67         dbus_uint16_t u16;
  68         dbus_uint32_t u;
  69         dbus_int32_t i;
  70         dbus_uint64_t u64;
  71         double d;
  72
  73         char *str;
  74         DBusMessageIter entry;
  75
  76         if (!pre)
  77                 pre = "";
  78
  79         while ((arg_type = dbus_message_iter_get_arg_type(iter))
  80                         != DBUS_TYPE_INVALID) {
  81
  82                 fprintf(stdout, "%s", pre);
  83
  84                 switch (arg_type) {
  85                 case DBUS_TYPE_STRUCT:
  86                         fprintf(stdout, "{ ");
  87                         dbus_message_iter_recurse(iter, &entry);
  88                         __connmanctl_dbus_print(&entry, "", "=", " ");
  89                         fprintf(stdout, " }");
  90                         break;
  91
  92                 case DBUS_TYPE_ARRAY:
  93                         fprintf(stdout, "[ ");
  94
  95                         dbus_message_iter_recurse(iter, &entry);
  96                         __connmanctl_dbus_print(&entry, "", "=", ", ");
  97
  98                         fprintf(stdout, " ]");
  99                         break;
 100
 101                 case DBUS_TYPE_DICT_ENTRY:
 102
 103                         dbus_message_iter_recurse(iter, &entry);
 104                         __connmanctl_dbus_print(&entry, "", dict, dict);
 105                         break;
 106
 107                 case DBUS_TYPE_STRING:
 108                 case DBUS_TYPE_OBJECT_PATH:
 109                         dbus_message_iter_get_basic(iter, &str);
 110                         fprintf(stdout, "%s", str);
 111                         break;
 112
 113                 case DBUS_TYPE_VARIANT:
 114                         dbus_message_iter_recurse(iter, &entry);
 115                         __connmanctl_dbus_print(&entry, pre, dict, sep);
 116                         break;
 117
 118                 case DBUS_TYPE_BOOLEAN:
 119                         dbus_message_iter_get_basic(iter, &b);
 120                         if (!b)
 121                                 fprintf(stdout, "False");
 122                         else
 123                                 fprintf(stdout, "True");
 124                         break;
 125
 126                 case DBUS_TYPE_BYTE:
 127                         dbus_message_iter_get_basic(iter, &c);
 128                         fprintf(stdout, "%d", c);
 129                         break;
 130
 131                 case DBUS_TYPE_UINT16:
 132                         dbus_message_iter_get_basic(iter, &u16);
 133                         fprintf(stdout, "%u", u16);
 134                         break;
 135
 136                 case DBUS_TYPE_UINT32:
 137                         dbus_message_iter_get_basic(iter, &u);
 138                         fprintf(stdout, "%d", u);
 139                         break;
 140
 141                 case DBUS_TYPE_INT32:
 142                         dbus_message_iter_get_basic(iter, &i);
 143                         fprintf(stdout, "%d", i);
 144                         break;
 145
 146                 case DBUS_TYPE_UINT64:
 147                         dbus_message_iter_get_basic(iter, &u64);
 148                         fprintf(stdout, "%"PRIu64, u64);
 149                         break;
 150
 151                 case DBUS_TYPE_DOUBLE:
 152                         dbus_message_iter_get_basic(iter, &d);
 153                         fprintf(stdout, "%f", d);
 154                         break;
 155
 156                 default:
 157                         fprintf(stdout, "<type %c>", arg_type);
 158                         break;
 159                 }
 160
 161                 if (dbus_message_iter_has_next(iter))
 162                         fprintf(stdout, "%s", sep);
 163
 164                 dbus_message_iter_next(iter);
 165         }
 166 }
 167
 168 struct dbus_callback {
 169         connmanctl_dbus_method_return_func_t cb;
 170         void *user_data;
 171 };
 172
 173 static void dbus_method_reply(DBusPendingCall *call, void *user_data)
 174 {
 175         struct dbus_callback *callback = user_data;
 176         int res = 0;
 177         DBusMessage *reply;
 178         DBusMessageIter iter;
 179
 180         __connmanctl_save_rl();
 181
 182         reply = dbus_pending_call_steal_reply(call);
 183         dbus_pending_call_unref(call);
 184         if (dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR) {
 185                 DBusError err;
 186
 187                 dbus_error_init(&err);
 188                 dbus_set_error_from_message(&err, reply);
 189
 190                 callback->cb(NULL, string2errno(err.name), err.message,
 191                         callback->user_data);
 192
 193                 dbus_error_free(&err);
 194                 goto end;
 195         }
 196
 197         dbus_message_iter_init(reply, &iter);
 198         res = callback->cb(&iter, 0, NULL, callback->user_data);
 199
 200 end:
 201         __connmanctl_redraw_rl();
 202         if (__connmanctl_is_interactive() == false && res != -EINPROGRESS)
 203                 __connmanctl_quit();
 204
 205         g_free(callback);
 206         dbus_message_unref(reply);
 207 }
 208
 209 static int send_method_call(DBusConnection *connection,
 210                 DBusMessage *message, connmanctl_dbus_method_return_func_t cb,
 211                 void *user_data)
 212 {
 213         int res = -ENXIO;
 214         DBusPendingCall *call;
 215         struct dbus_callback *callback;
 216
 217         if (!dbus_connection_send_with_reply(connection, message, &call, TIMEOUT))
 218                 goto end;
 219
 220         if (!call)
 221                 goto end;
 222
 223         if (cb) {
 224                 callback = g_new0(struct dbus_callback, 1);
 225                 callback->cb = cb;
 226                 callback->user_data = user_data;
 227                 dbus_pending_call_set_notify(call, dbus_method_reply,
 228                                 callback, NULL);
 229                 res = -EINPROGRESS;
 230         }
 231
 232 end:
 233         dbus_message_unref(message);
 234         return res;
 235 }
 236
 237 static int append_variant(DBusMessageIter *iter, const char *property,
 238                 int type, void *value)
 239 {
 240         DBusMessageIter variant;
 241         char *type_str;
 242
 243         switch(type) {
 244         case DBUS_TYPE_BOOLEAN:
 245                 type_str = DBUS_TYPE_BOOLEAN_AS_STRING;
 246                 break;
 247         case DBUS_TYPE_BYTE:
 248                 type_str = DBUS_TYPE_BYTE_AS_STRING;
 249                 break;
 250         case DBUS_TYPE_STRING:
 251                 type_str = DBUS_TYPE_STRING_AS_STRING;
 252                 break;
 253         case DBUS_TYPE_INT32:
 254                 type_str = DBUS_TYPE_INT32_AS_STRING;
 255                 break;
 256         default:
 257                 return -EOPNOTSUPP;
 258         }
 259
 260         dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING, &property);
 261         dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type_str,
 262                         &variant);
 263         dbus_message_iter_append_basic(&variant, type, value);
 264         dbus_message_iter_close_container(iter, &variant);
 265
 266         return 0;
 267 }
 268
 269 int __connmanctl_dbus_method_call(DBusConnection *connection,
 270                 const char *service, const char *path, const char *interface,
 271                 const char *method, connmanctl_dbus_method_return_func_t cb,
 272                 void *user_data, connmanctl_dbus_append_func_t append_func,
 273                 void *append_data)
 274 {
 275         DBusMessage *message;
 276         DBusMessageIter iter;
 277
 278         message = dbus_message_new_method_call(service, path, interface,
 279                         method);
 280
 281         if (!message)
 282                 return -ENOMEM;
 283
 284         if (append_func) {
 285                 dbus_message_iter_init_append(message, &iter);
 286                 append_func(&iter, append_data);
 287         }
 288
 289         return send_method_call(connection, message, cb, user_data);
 290 }
 291
 292 int __connmanctl_dbus_set_property(DBusConnection *connection,
 293                 const char *path, const char *interface,
 294                 connmanctl_dbus_method_return_func_t cb, void * user_data,
 295                 const char *property, int type, void *value)
 296 {
 297         DBusMessage *message;
 298         DBusMessageIter iter;
 299
 300         message = dbus_message_new_method_call("net.connman", path,
 301                         interface, "SetProperty");
 302
 303         if (!message)
 304                 return -ENOMEM;
 305
 306         dbus_message_iter_init_append(message, &iter);
 307
 308         if (append_variant(&iter, property, type, value) < 0) {
 309                 dbus_message_unref(message);
 310                 return -EINVAL;
 311         }
 312
 313         return send_method_call(connection, message, cb, user_data);
 314 }
 315
 316 void __connmanctl_dbus_append_dict(DBusMessageIter *iter,
 317                 connmanctl_dbus_append_func_t append_fn, void *append_data)
 318 {
 319         DBusMessageIter dict;
 320
 321         dbus_message_iter_open_container(iter, DBUS_TYPE_ARRAY,
 322                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 323                         DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING
 324                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict);
 325
 326         if (append_fn)
 327                 append_fn(&dict, append_data);
 328
 329         dbus_message_iter_close_container(iter, &dict);
 330 }
 331
 332 void __connmanctl_dbus_append_dict_entry(DBusMessageIter *iter,
 333                 const char *property, int type, void *value)
 334 {
 335         DBusMessageIter dict_entry;
 336
 337         dbus_message_iter_open_container(iter, DBUS_TYPE_DICT_ENTRY, NULL,
 338                         &dict_entry);
 339
 340         append_variant(&dict_entry, property, type, value);
 341
 342         dbus_message_iter_close_container(iter, &dict_entry);
 343 }
 344
 345 int __connmanctl_dbus_set_property_dict(DBusConnection *connection,
 346                 const char *path, const char *interface,
 347                 connmanctl_dbus_method_return_func_t cb, void *user_data,
 348                 const char *property, int type,
 349                 connmanctl_dbus_append_func_t append_fn,
 350                 void *append_user_data)
 351 {
 352         DBusMessage *message;
 353         DBusMessageIter iter, variant, dict;
 354
 355         message = dbus_message_new_method_call("net.connman", path,
 356                         interface, "SetProperty");
 357
 358         if (!message)
 359                 return -ENOMEM;
 360
 361         dbus_message_iter_init_append(message, &iter);
 362         dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &property);
 363         dbus_message_iter_open_container(&iter, DBUS_TYPE_VARIANT,
 364                         DBUS_TYPE_ARRAY_AS_STRING
 365                                 DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 366                                         DBUS_TYPE_STRING_AS_STRING
 367                                         DBUS_TYPE_VARIANT_AS_STRING
 368                                 DBUS_DICT_ENTRY_END_CHAR_AS_STRING,
 369                         &variant);
 370
 371         dbus_message_iter_open_container(&variant, DBUS_TYPE_ARRAY,
 372                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 373                                 DBUS_TYPE_STRING_AS_STRING
 374                                 DBUS_TYPE_VARIANT_AS_STRING
 375                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING,
 376                         &dict);
 377
 378         append_fn(&dict, append_user_data);
 379
 380         dbus_message_iter_close_container(&variant, &dict);
 381         dbus_message_iter_close_container(&iter, &variant);
 382
 383         return send_method_call(connection, message, cb, user_data);
 384 }
 385
 386 static void append_variant_array(DBusMessageIter *iter, const char *property,
 387                 connmanctl_dbus_append_func_t append_fn,
 388                 void *append_user_data)
 389 {
 390         DBusMessageIter variant, array;
 391
 392         dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING, &property);
 393         dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT,
 394                         DBUS_TYPE_ARRAY_AS_STRING
 395                                 DBUS_TYPE_STRING_AS_STRING,
 396                         &variant);
 397
 398         dbus_message_iter_open_container(&variant, DBUS_TYPE_ARRAY,
 399                         DBUS_TYPE_STRING_AS_STRING, &array);
 400
 401         append_fn(&array, append_user_data);
 402
 403         dbus_message_iter_close_container(&variant, &array);
 404         dbus_message_iter_close_container(iter, &variant);
 405 }
 406
 407 void __connmanctl_dbus_append_dict_string_array(DBusMessageIter *iter,
 408                 const char *property, connmanctl_dbus_append_func_t append_fn,
 409                 void *append_user_data)
 410 {
 411         DBusMessageIter dict_entry;
 412
 413         dbus_message_iter_open_container(iter, DBUS_TYPE_DICT_ENTRY, NULL,
 414                         &dict_entry);
 415
 416         append_variant_array(&dict_entry, property, append_fn,
 417                         append_user_data);
 418
 419         dbus_message_iter_close_container(iter, &dict_entry);
 420 }
 421
 422 int __connmanctl_dbus_set_property_array(DBusConnection *connection,
 423                 const char *path, const char *interface,
 424                 connmanctl_dbus_method_return_func_t cb, void *user_data,
 425                 const char *property, int type,
 426                 connmanctl_dbus_append_func_t append_fn,
 427                 void *append_user_data)
 428 {
 429         DBusMessage *message;
 430         DBusMessageIter iter;
 431
 432         if (type != DBUS_TYPE_STRING)
 433                 return -EOPNOTSUPP;
 434
 435         message = dbus_message_new_method_call("net.connman", path,
 436                         interface, "SetProperty");
 437
 438         if (!message)
 439                 return -ENOMEM;
 440
 441         dbus_message_iter_init_append(message, &iter);
 442
 443         append_variant_array(&iter, property, append_fn, append_user_data);
 444
 445         return send_method_call(connection, message, cb, user_data);
 446 }
 447
 448 int __connmanctl_dbus_session_change(DBusConnection *connection,
 449                 const char *session_path,
 450                 connmanctl_dbus_method_return_func_t cb, void * user_data,
 451                 const char *property, int type, void *value)
 452 {
 453         DBusMessage *message;
 454         DBusMessageIter iter;
 455
 456         message = dbus_message_new_method_call("net.connman", session_path,
 457                         "net.connman.Session", "Change");
 458
 459         if (!message)
 460                 return -ENOMEM;
 461
 462         dbus_message_iter_init_append(message, &iter);
 463
 464         if (append_variant(&iter, property, type, value) < 0) {
 465                 dbus_message_unref(message);
 466                 return -EINVAL;
 467         }
 468
 469         return send_method_call(connection, message, cb, user_data);
 470 }
 471
 472 int __connmanctl_dbus_session_change_array(DBusConnection *connection,
 473                 const char *session_path,
 474                 connmanctl_dbus_method_return_func_t cb, void *user_data,
 475                 const char *property,
 476                 connmanctl_dbus_append_func_t append_fn,
 477                 void *append_user_data)
 478 {
 479         DBusMessage *message;
 480         DBusMessageIter iter;
 481
 482         message = dbus_message_new_method_call("net.connman", session_path,
 483                         "net.connman.Session", "Change");
 484
 485         if (!message)
 486                 return -ENOMEM;
 487
 488         dbus_message_iter_init_append(message, &iter);
 489
 490         append_variant_array(&iter, property, append_fn, append_user_data);
 491
 492         return send_method_call(connection, message, cb, user_data);
 493 }