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 == NULL)
  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 == FALSE)
  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) == TRUE)
 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,
 181                                         TIMEOUT) == FALSE)
 182                 goto end;
 183
 184         if (call == NULL)
 185                 goto end;
 186
 187         if (cb != NULL) {
 188                 callback = g_new0(struct dbus_callback, 1);
 189                 callback->cb = cb;
 190                 callback->user_data = user_data;
 191                 dbus_pending_call_set_notify(call, dbus_method_reply,
 192                                 callback, NULL);
 193                 res = -EINPROGRESS;
 194         }
 195
 196 end:
 197         dbus_message_unref(message);
 198         return res;
 199 }
 200
 201 static int append_variant(DBusMessageIter *iter, const char *property,
 202                 int type, void *value)
 203 {
 204         DBusMessageIter variant;
 205         char *type_str;
 206
 207         switch(type) {
 208         case DBUS_TYPE_BOOLEAN:
 209                 type_str = DBUS_TYPE_BOOLEAN_AS_STRING;
 210                 break;
 211         case DBUS_TYPE_BYTE:
 212                 type_str = DBUS_TYPE_BYTE_AS_STRING;
 213                 break;
 214         case DBUS_TYPE_STRING:
 215                 type_str = DBUS_TYPE_STRING_AS_STRING;
 216                 break;
 217         default:
 218                 return -EOPNOTSUPP;
 219         }
 220
 221         dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING, &property);
 222         dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type_str,
 223                         &variant);
 224         dbus_message_iter_append_basic(&variant, type, value);
 225         dbus_message_iter_close_container(iter, &variant);
 226
 227         return 0;
 228 }
 229
 230 int __connmanctl_dbus_method_call(DBusConnection *connection,
 231                 const char *service, const char *path, const char *interface,
 232                 const char *method, connmanctl_dbus_method_return_func_t cb,
 233                 void *user_data, int arg1, ...)
 234 {
 235         DBusMessage *message;
 236         va_list args;
 237
 238         message = dbus_message_new_method_call(service, path, interface,
 239                         method);
 240
 241         if (message == NULL)
 242                 return -ENOMEM;
 243
 244         va_start(args, arg1);
 245         dbus_message_append_args_valist(message, arg1, args);
 246         va_end(args);
 247
 248         return send_method_call(connection, message, cb, user_data);
 249 }
 250
 251 int __connmanctl_dbus_set_property(DBusConnection *connection,
 252                 const char *path, const char *interface,
 253                 connmanctl_dbus_method_return_func_t cb, void * user_data,
 254                 const char *property, int type, void *value)
 255 {
 256         DBusMessage *message;
 257         DBusMessageIter iter;
 258
 259         message = dbus_message_new_method_call("net.connman", path,
 260                         interface, "SetProperty");
 261
 262         if (message == NULL)
 263                 return -ENOMEM;
 264
 265         dbus_message_iter_init_append(message, &iter);
 266
 267         if (append_variant(&iter, property, type, value) < 0) {
 268                 dbus_message_unref(message);
 269                 return -EINVAL;
 270         }
 271
 272         return send_method_call(connection, message, cb, user_data);
 273 }
 274
 275 void __connmanctl_dbus_append_dict_entry(DBusMessageIter *iter,
 276                 const char *property, int type, void *value)
 277 {
 278         DBusMessageIter dict_entry;
 279
 280         dbus_message_iter_open_container(iter, DBUS_TYPE_DICT_ENTRY, NULL,
 281                         &dict_entry);
 282
 283         append_variant(&dict_entry, property, type, value);
 284
 285         dbus_message_iter_close_container(iter, &dict_entry);
 286 }
 287
 288 int __connmanctl_dbus_set_property_dict(DBusConnection *connection,
 289                 const char *path, const char *interface,
 290                 connmanctl_dbus_method_return_func_t cb, void *user_data,
 291                 const char *property, int type,
 292                 connmanctl_dbus_append_func_t append_fn,
 293                 void *append_user_data)
 294 {
 295         DBusMessage *message;
 296         DBusMessageIter iter, variant, dict;
 297
 298         message = dbus_message_new_method_call("net.connman", path,
 299                         interface, "SetProperty");
 300
 301         if (message == NULL)
 302                 return -ENOMEM;
 303
 304         dbus_message_iter_init_append(message, &iter);
 305         dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &property);
 306         dbus_message_iter_open_container(&iter, DBUS_TYPE_VARIANT,
 307                         DBUS_TYPE_ARRAY_AS_STRING
 308                                 DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 309                                         DBUS_TYPE_STRING_AS_STRING
 310                                         DBUS_TYPE_VARIANT_AS_STRING
 311                                 DBUS_DICT_ENTRY_END_CHAR_AS_STRING,
 312                         &variant);
 313
 314         dbus_message_iter_open_container(&variant, DBUS_TYPE_ARRAY,
 315                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 316                                 DBUS_TYPE_STRING_AS_STRING
 317                                 DBUS_TYPE_VARIANT_AS_STRING
 318                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING,
 319                         &dict);
 320
 321         append_fn(&dict, append_user_data);
 322
 323         dbus_message_iter_close_container(&variant, &dict);
 324         dbus_message_iter_close_container(&iter, &variant);
 325
 326         return send_method_call(connection, message, cb, user_data);
 327 }
 328
 329 static void append_variant_array(DBusMessageIter *iter, const char *property,
 330                 connmanctl_dbus_append_func_t append_fn,
 331                 void *append_user_data)
 332 {
 333         DBusMessageIter variant, array;
 334
 335         dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING, &property);
 336         dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT,
 337                         DBUS_TYPE_ARRAY_AS_STRING
 338                                 DBUS_TYPE_STRING_AS_STRING,
 339                         &variant);
 340
 341         dbus_message_iter_open_container(&variant, DBUS_TYPE_ARRAY,
 342                         DBUS_TYPE_STRING_AS_STRING, &array);
 343
 344         append_fn(&array, append_user_data);
 345
 346         dbus_message_iter_close_container(&variant, &array);
 347         dbus_message_iter_close_container(iter, &variant);
 348 }
 349
 350 void __connmanctl_dbus_append_dict_string_array(DBusMessageIter *iter,
 351                 const char *property, connmanctl_dbus_append_func_t append_fn,
 352                 void *append_user_data)
 353 {
 354         DBusMessageIter dict_entry;
 355
 356         dbus_message_iter_open_container(iter, DBUS_TYPE_DICT_ENTRY, NULL,
 357                         &dict_entry);
 358
 359         append_variant_array(&dict_entry, property, append_fn,
 360                         append_user_data);
 361
 362         dbus_message_iter_close_container(iter, &dict_entry);
 363 }
 364
 365 int __connmanctl_dbus_set_property_array(DBusConnection *connection,
 366                 const char *path, const char *interface,
 367                 connmanctl_dbus_method_return_func_t cb, void *user_data,
 368                 const char *property, int type,
 369                 connmanctl_dbus_append_func_t append_fn,
 370                 void *append_user_data)
 371 {
 372         DBusMessage *message;
 373         DBusMessageIter iter;
 374
 375         if (type != DBUS_TYPE_STRING)
 376                 return -EOPNOTSUPP;
 377
 378         message = dbus_message_new_method_call("net.connman", path,
 379                         interface, "SetProperty");
 380
 381         if (message == NULL)
 382                 return -ENOMEM;
 383
 384         dbus_message_iter_init_append(message, &iter);
 385
 386         append_variant_array(&iter, property, append_fn, append_user_data);
 387
 388         return send_method_call(connection, message, cb, user_data);
 389 }