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 <glib.h>
  26
  27 #include "input.h"
  28 #include "dbus_helpers.h"
  29
  30 #define TIMEOUT         60000
  31
  32 void __connmanctl_dbus_print(DBusMessageIter *iter, const char *pre,
  33                 const char *dict, const char *sep)
  34 {
  35         int arg_type;
  36         dbus_bool_t b;
  37         unsigned char c;
  38         dbus_uint16_t u16;
  39         dbus_uint32_t u;
  40         dbus_int32_t i;
  41         double d;
  42
  43         char *str;
  44         DBusMessageIter entry;
  45
  46         if (!pre)
  47                 pre = "";
  48
  49         while ((arg_type = dbus_message_iter_get_arg_type(iter))
  50                         != DBUS_TYPE_INVALID) {
  51
  52                 fprintf(stdout, "%s", pre);
  53
  54                 switch (arg_type) {
  55                 case DBUS_TYPE_STRUCT:
  56                         fprintf(stdout, "{ ");
  57                         dbus_message_iter_recurse(iter, &entry);
  58                         __connmanctl_dbus_print(&entry, "", "=", " ");
  59                         fprintf(stdout, " }");
  60                         break;
  61
  62                 case DBUS_TYPE_ARRAY:
  63                         fprintf(stdout, "[ ");
  64
  65                         dbus_message_iter_recurse(iter, &entry);
  66                         __connmanctl_dbus_print(&entry, "", "=", ", ");
  67
  68                         fprintf(stdout, " ]");
  69                         break;
  70
  71                 case DBUS_TYPE_DICT_ENTRY:
  72
  73                         dbus_message_iter_recurse(iter, &entry);
  74                         __connmanctl_dbus_print(&entry, "", dict, dict);
  75                         break;
  76
  77                 case DBUS_TYPE_STRING:
  78                 case DBUS_TYPE_OBJECT_PATH:
  79                         dbus_message_iter_get_basic(iter, &str);
  80                         fprintf(stdout, "%s", str);
  81                         break;
  82
  83                 case DBUS_TYPE_VARIANT:
  84                         dbus_message_iter_recurse(iter, &entry);
  85                         __connmanctl_dbus_print(&entry, pre, dict, sep);
  86                         break;
  87
  88                 case DBUS_TYPE_BOOLEAN:
  89                         dbus_message_iter_get_basic(iter, &b);
  90                         if (!b)
  91                                 fprintf(stdout, "False");
  92                         else
  93                                 fprintf(stdout, "True");
  94                         break;
  95
  96                 case DBUS_TYPE_BYTE:
  97                         dbus_message_iter_get_basic(iter, &c);
  98                         fprintf(stdout, "%d", c);
  99                         break;
 100
 101                 case DBUS_TYPE_UINT16:
 102                         dbus_message_iter_get_basic(iter, &u16);
 103                         fprintf(stdout, "%u", u16);
 104                         break;
 105
 106                 case DBUS_TYPE_UINT32:
 107                         dbus_message_iter_get_basic(iter, &u);
 108                         fprintf(stdout, "%d", u);
 109                         break;
 110
 111                 case DBUS_TYPE_INT32:
 112                         dbus_message_iter_get_basic(iter, &i);
 113                         fprintf(stdout, "%d", i);
 114                         break;
 115
 116                 case DBUS_TYPE_DOUBLE:
 117                         dbus_message_iter_get_basic(iter, &d);
 118                         fprintf(stdout, "%f", d);
 119                         break;
 120
 121                 default:
 122                         fprintf(stdout, "<type %c>", arg_type);
 123                         break;
 124                 }
 125
 126                 if (dbus_message_iter_has_next(iter))
 127                         fprintf(stdout, "%s", sep);
 128
 129                 dbus_message_iter_next(iter);
 130         }
 131 }
 132
 133 struct dbus_callback {
 134         connmanctl_dbus_method_return_func_t cb;
 135         void *user_data;
 136 };
 137
 138 static void dbus_method_reply(DBusPendingCall *call, void *user_data)
 139 {
 140         struct dbus_callback *callback = user_data;
 141         int res = 0;
 142         DBusMessage *reply;
 143         DBusMessageIter iter;
 144
 145         __connmanctl_save_rl();
 146
 147         reply = dbus_pending_call_steal_reply(call);
 148         if (dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR) {
 149                 DBusError err;
 150
 151                 dbus_error_init(&err);
 152                 dbus_set_error_from_message(&err, reply);
 153
 154                 callback->cb(NULL, err.message, callback->user_data);
 155
 156                 dbus_error_free(&err);
 157                 goto end;
 158         }
 159
 160         dbus_message_iter_init(reply, &iter);
 161         res = callback->cb(&iter, NULL, callback->user_data);
 162
 163 end:
 164         __connmanctl_redraw_rl();
 165         if (__connmanctl_is_interactive() == false && res != -EINPROGRESS)
 166                 __connmanctl_quit();
 167
 168         g_free(callback);
 169         dbus_message_unref(reply);
 170 }
 171
 172 static int send_method_call(DBusConnection *connection,
 173                 DBusMessage *message, connmanctl_dbus_method_return_func_t cb,
 174                 void *user_data)
 175 {
 176         int res = -ENXIO;
 177         DBusPendingCall *call;
 178         struct dbus_callback *callback;
 179
 180         if (!dbus_connection_send_with_reply(connection, message, &call, TIMEOUT))
 181                 goto end;
 182
 183         if (!call)
 184                 goto end;
 185
 186         if (cb) {
 187                 callback = g_new0(struct dbus_callback, 1);
 188                 callback->cb = cb;
 189                 callback->user_data = user_data;
 190                 dbus_pending_call_set_notify(call, dbus_method_reply,
 191                                 callback, NULL);
 192                 res = -EINPROGRESS;
 193         }
 194
 195 end:
 196         dbus_message_unref(message);
 197         return res;
 198 }
 199
 200 static int append_variant(DBusMessageIter *iter, const char *property,
 201                 int type, void *value)
 202 {
 203         DBusMessageIter variant;
 204         char *type_str;
 205
 206         switch(type) {
 207         case DBUS_TYPE_BOOLEAN:
 208                 type_str = DBUS_TYPE_BOOLEAN_AS_STRING;
 209                 break;
 210         case DBUS_TYPE_BYTE:
 211                 type_str = DBUS_TYPE_BYTE_AS_STRING;
 212                 break;
 213         case DBUS_TYPE_STRING:
 214                 type_str = DBUS_TYPE_STRING_AS_STRING;
 215                 break;
 216         default:
 217                 return -EOPNOTSUPP;
 218         }
 219
 220         dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING, &property);
 221         dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type_str,
 222                         &variant);
 223         dbus_message_iter_append_basic(&variant, type, value);
 224         dbus_message_iter_close_container(iter, &variant);
 225
 226         return 0;
 227 }
 228
 229 int __connmanctl_dbus_method_call(DBusConnection *connection,
 230                 const char *service, const char *path, const char *interface,
 231                 const char *method, connmanctl_dbus_method_return_func_t cb,
 232                 void *user_data, connmanctl_dbus_append_func_t append_func,
 233                 void *append_data)
 234 {
 235         DBusMessage *message;
 236         DBusMessageIter iter;
 237
 238         message = dbus_message_new_method_call(service, path, interface,
 239                         method);
 240
 241         if (!message)
 242                 return -ENOMEM;
 243
 244         if (append_func) {
 245                 dbus_message_iter_init_append(message, &iter);
 246                 append_func(&iter, append_data);
 247         }
 248
 249         return send_method_call(connection, message, cb, user_data);
 250 }
 251
 252 int __connmanctl_dbus_set_property(DBusConnection *connection,
 253                 const char *path, const char *interface,
 254                 connmanctl_dbus_method_return_func_t cb, void * user_data,
 255                 const char *property, int type, void *value)
 256 {
 257         DBusMessage *message;
 258         DBusMessageIter iter;
 259
 260         message = dbus_message_new_method_call("net.connman", path,
 261                         interface, "SetProperty");
 262
 263         if (!message)
 264                 return -ENOMEM;
 265
 266         dbus_message_iter_init_append(message, &iter);
 267
 268         if (append_variant(&iter, property, type, value) < 0) {
 269                 dbus_message_unref(message);
 270                 return -EINVAL;
 271         }
 272
 273         return send_method_call(connection, message, cb, user_data);
 274 }
 275
 276 void __connmanctl_dbus_append_dict(DBusMessageIter *iter,
 277                 connmanctl_dbus_append_func_t append_fn, void *append_data)
 278 {
 279         DBusMessageIter dict;
 280
 281         dbus_message_iter_open_container(iter, DBUS_TYPE_ARRAY,
 282                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 283                         DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING
 284                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict);
 285
 286         if (append_fn)
 287                 append_fn(&dict, append_data);
 288
 289         dbus_message_iter_close_container(iter, &dict);
 290 }
 291
 292 void __connmanctl_dbus_append_dict_entry(DBusMessageIter *iter,
 293                 const char *property, int type, void *value)
 294 {
 295         DBusMessageIter dict_entry;
 296
 297         dbus_message_iter_open_container(iter, DBUS_TYPE_DICT_ENTRY, NULL,
 298                         &dict_entry);
 299
 300         append_variant(&dict_entry, property, type, value);
 301
 302         dbus_message_iter_close_container(iter, &dict_entry);
 303 }
 304
 305 int __connmanctl_dbus_set_property_dict(DBusConnection *connection,
 306                 const char *path, const char *interface,
 307                 connmanctl_dbus_method_return_func_t cb, void *user_data,
 308                 const char *property, int type,
 309                 connmanctl_dbus_append_func_t append_fn,
 310                 void *append_user_data)
 311 {
 312         DBusMessage *message;
 313         DBusMessageIter iter, variant, dict;
 314
 315         message = dbus_message_new_method_call("net.connman", path,
 316                         interface, "SetProperty");
 317
 318         if (!message)
 319                 return -ENOMEM;
 320
 321         dbus_message_iter_init_append(message, &iter);
 322         dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &property);
 323         dbus_message_iter_open_container(&iter, DBUS_TYPE_VARIANT,
 324                         DBUS_TYPE_ARRAY_AS_STRING
 325                                 DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 326                                         DBUS_TYPE_STRING_AS_STRING
 327                                         DBUS_TYPE_VARIANT_AS_STRING
 328                                 DBUS_DICT_ENTRY_END_CHAR_AS_STRING,
 329                         &variant);
 330
 331         dbus_message_iter_open_container(&variant, DBUS_TYPE_ARRAY,
 332                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 333                                 DBUS_TYPE_STRING_AS_STRING
 334                                 DBUS_TYPE_VARIANT_AS_STRING
 335                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING,
 336                         &dict);
 337
 338         append_fn(&dict, append_user_data);
 339
 340         dbus_message_iter_close_container(&variant, &dict);
 341         dbus_message_iter_close_container(&iter, &variant);
 342
 343         return send_method_call(connection, message, cb, user_data);
 344 }
 345
 346 static void append_variant_array(DBusMessageIter *iter, const char *property,
 347                 connmanctl_dbus_append_func_t append_fn,
 348                 void *append_user_data)
 349 {
 350         DBusMessageIter variant, array;
 351
 352         dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING, &property);
 353         dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT,
 354                         DBUS_TYPE_ARRAY_AS_STRING
 355                                 DBUS_TYPE_STRING_AS_STRING,
 356                         &variant);
 357
 358         dbus_message_iter_open_container(&variant, DBUS_TYPE_ARRAY,
 359                         DBUS_TYPE_STRING_AS_STRING, &array);
 360
 361         append_fn(&array, append_user_data);
 362
 363         dbus_message_iter_close_container(&variant, &array);
 364         dbus_message_iter_close_container(iter, &variant);
 365 }
 366
 367 void __connmanctl_dbus_append_dict_string_array(DBusMessageIter *iter,
 368                 const char *property, connmanctl_dbus_append_func_t append_fn,
 369                 void *append_user_data)
 370 {
 371         DBusMessageIter dict_entry;
 372
 373         dbus_message_iter_open_container(iter, DBUS_TYPE_DICT_ENTRY, NULL,
 374                         &dict_entry);
 375
 376         append_variant_array(&dict_entry, property, append_fn,
 377                         append_user_data);
 378
 379         dbus_message_iter_close_container(iter, &dict_entry);
 380 }
 381
 382 int __connmanctl_dbus_set_property_array(DBusConnection *connection,
 383                 const char *path, const char *interface,
 384                 connmanctl_dbus_method_return_func_t cb, void *user_data,
 385                 const char *property, int type,
 386                 connmanctl_dbus_append_func_t append_fn,
 387                 void *append_user_data)
 388 {
 389         DBusMessage *message;
 390         DBusMessageIter iter;
 391
 392         if (type != DBUS_TYPE_STRING)
 393                 return -EOPNOTSUPP;
 394
 395         message = dbus_message_new_method_call("net.connman", path,
 396                         interface, "SetProperty");
 397
 398         if (!message)
 399                 return -ENOMEM;
 400
 401         dbus_message_iter_init_append(message, &iter);
 402
 403         append_variant_array(&iter, property, append_fn, append_user_data);
 404
 405         return send_method_call(connection, message, cb, user_data);
 406 }
 407
 408 int __connmanctl_dbus_session_change(DBusConnection *connection,
 409                 const char *session_path,
 410                 connmanctl_dbus_method_return_func_t cb, void * user_data,
 411                 const char *property, int type, void *value)
 412 {
 413         DBusMessage *message;
 414         DBusMessageIter iter;
 415
 416         message = dbus_message_new_method_call("net.connman", session_path,
 417                         "net.connman.Session", "Change");
 418
 419         if (!message)
 420                 return -ENOMEM;
 421
 422         dbus_message_iter_init_append(message, &iter);
 423
 424         if (append_variant(&iter, property, type, value) < 0) {
 425                 dbus_message_unref(message);
 426                 return -EINVAL;
 427         }
 428
 429         return send_method_call(connection, message, cb, user_data);
 430 }
 431
 432 int __connmanctl_dbus_session_change_array(DBusConnection *connection,
 433                 const char *session_path,
 434                 connmanctl_dbus_method_return_func_t cb, void *user_data,
 435                 const char *property,
 436                 connmanctl_dbus_append_func_t append_fn,
 437                 void *append_user_data)
 438 {
 439         DBusMessage *message;
 440         DBusMessageIter iter;
 441
 442         message = dbus_message_new_method_call("net.connman", session_path,
 443                         "net.connman.Session", "Change");
 444
 445         if (!message)
 446                 return -ENOMEM;
 447
 448         dbus_message_iter_init_append(message, &iter);
 449
 450         append_variant_array(&iter, property, append_fn, append_user_data);
 451
 452         return send_method_call(connection, message, cb, user_data);
 453 }