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         unsigned int i;
  39         double d;
  40
  41         char *str;
  42         DBusMessageIter entry;
  43
  44         if (pre == NULL)
  45                 pre = "";
  46
  47         while ((arg_type = dbus_message_iter_get_arg_type(iter))
  48                         != DBUS_TYPE_INVALID) {
  49
  50                 fprintf(stdout, "%s", pre);
  51
  52                 switch (arg_type) {
  53                 case DBUS_TYPE_STRUCT:
  54                         fprintf(stdout, "{ ");
  55                         dbus_message_iter_recurse(iter, &entry);
  56                         __connmanctl_dbus_print(&entry, "", "=", " ");
  57                         fprintf(stdout, " }");
  58                         break;
  59
  60                 case DBUS_TYPE_ARRAY:
  61                         fprintf(stdout, "[ ");
  62
  63                         dbus_message_iter_recurse(iter, &entry);
  64                         __connmanctl_dbus_print(&entry, "", "=", ", ");
  65
  66                         fprintf(stdout, " ]");
  67                         break;
  68
  69                 case DBUS_TYPE_DICT_ENTRY:
  70
  71                         dbus_message_iter_recurse(iter, &entry);
  72                         __connmanctl_dbus_print(&entry, "", dict, dict);
  73                         break;
  74
  75                 case DBUS_TYPE_STRING:
  76                 case DBUS_TYPE_OBJECT_PATH:
  77                         dbus_message_iter_get_basic(iter, &str);
  78                         fprintf(stdout, "%s", str);
  79                         break;
  80
  81                 case DBUS_TYPE_VARIANT:
  82                         dbus_message_iter_recurse(iter, &entry);
  83                         __connmanctl_dbus_print(&entry, pre, dict, sep);
  84                         break;
  85
  86                 case DBUS_TYPE_BOOLEAN:
  87                         dbus_message_iter_get_basic(iter, &b);
  88                         if (b == FALSE)
  89                                 fprintf(stdout, "False");
  90                         else
  91                                 fprintf(stdout, "True");
  92                         break;
  93
  94                 case DBUS_TYPE_BYTE:
  95                         dbus_message_iter_get_basic(iter, &c);
  96                         fprintf(stdout, "%d", c);
  97                         break;
  98
  99                 case DBUS_TYPE_UINT16:
 100                 case DBUS_TYPE_UINT32:
 101                         dbus_message_iter_get_basic(iter, &i);
 102                         fprintf(stdout, "%d", i);
 103                         break;
 104
 105                 case DBUS_TYPE_DOUBLE:
 106                         dbus_message_iter_get_basic(iter, &d);
 107                         fprintf(stdout, "%f", d);
 108                         break;
 109
 110                 default:
 111                         fprintf(stdout, "<type %c>", arg_type);
 112                         break;
 113                 }
 114
 115                 if (dbus_message_iter_has_next(iter) == TRUE)
 116                         fprintf(stdout, "%s", sep);
 117
 118                 dbus_message_iter_next(iter);
 119         }
 120 }
 121
 122 struct dbus_callback {
 123         connmanctl_dbus_method_return_func_t cb;
 124         void *user_data;
 125 };
 126
 127 static void dbus_method_reply(DBusPendingCall *call, void *user_data)
 128 {
 129         struct dbus_callback *callback = user_data;
 130         DBusMessage *reply;
 131         DBusMessageIter iter;
 132
 133         __connmanctl_save_rl();
 134
 135         reply = dbus_pending_call_steal_reply(call);
 136         if (dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR) {
 137                 DBusError err;
 138
 139                 dbus_error_init(&err);
 140                 dbus_set_error_from_message(&err, reply);
 141
 142                 callback->cb(NULL, err.message, callback->user_data);
 143
 144                 dbus_error_free(&err);
 145                 goto end;
 146         }
 147
 148         dbus_message_iter_init(reply, &iter);
 149         callback->cb(&iter, NULL, callback->user_data);
 150
 151 end:
 152         __connmanctl_redraw_rl();
 153         if (__connmanctl_is_interactive() == false)
 154                 __connmanctl_quit();
 155
 156         g_free(callback);
 157         dbus_message_unref(reply);
 158 }
 159
 160 static int send_method_call(DBusConnection *connection,
 161                 DBusMessage *message, connmanctl_dbus_method_return_func_t cb,
 162                 void *user_data)
 163 {
 164         int res = -ENXIO;
 165         DBusPendingCall *call;
 166         struct dbus_callback *callback;
 167
 168         if (dbus_connection_send_with_reply(connection, message, &call,
 169                                         TIMEOUT) == FALSE)
 170                 goto end;
 171
 172         if (call == NULL)
 173                 goto end;
 174
 175         if (cb != NULL) {
 176                 callback = g_new0(struct dbus_callback, 1);
 177                 callback->cb = cb;
 178                 callback->user_data = user_data;
 179                 dbus_pending_call_set_notify(call, dbus_method_reply,
 180                                 callback, NULL);
 181                 res = -EINPROGRESS;
 182         }
 183
 184 end:
 185         dbus_message_unref(message);
 186         return res;
 187 }
 188
 189 static int append_variant(DBusMessageIter *iter, const char *property,
 190                 int type, void *value)
 191 {
 192         DBusMessageIter variant;
 193         char *type_str;
 194
 195         switch(type) {
 196         case DBUS_TYPE_BOOLEAN:
 197                 type_str = DBUS_TYPE_BOOLEAN_AS_STRING;
 198                 break;
 199         case DBUS_TYPE_BYTE:
 200                 type_str = DBUS_TYPE_BYTE_AS_STRING;
 201                 break;
 202         case DBUS_TYPE_STRING:
 203                 type_str = DBUS_TYPE_STRING_AS_STRING;
 204                 break;
 205         default:
 206                 return -EOPNOTSUPP;
 207         }
 208
 209         dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING, &property);
 210         dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type_str,
 211                         &variant);
 212         dbus_message_iter_append_basic(&variant, type, value);
 213         dbus_message_iter_close_container(iter, &variant);
 214
 215         return 0;
 216 }
 217
 218 int __connmanctl_dbus_method_call(DBusConnection *connection, const char *path,
 219                 const char *interface, const char *method,
 220                 connmanctl_dbus_method_return_func_t cb, void *user_data,
 221                 int arg1, ...)
 222 {
 223         DBusMessage *message;
 224         va_list args;
 225
 226         message = dbus_message_new_method_call("net.connman", path,
 227                         interface, method);
 228
 229         if (message == NULL)
 230                 return -ENOMEM;
 231
 232         va_start(args, arg1);
 233         dbus_message_append_args_valist(message, arg1, args);
 234         va_end(args);
 235
 236         return send_method_call(connection, message, cb, user_data);
 237 }
 238
 239 int __connmanctl_dbus_set_property(DBusConnection *connection,
 240                 const char *path, const char *interface,
 241                 connmanctl_dbus_method_return_func_t cb, void * user_data,
 242                 const char *property, int type, void *value)
 243 {
 244         DBusMessage *message;
 245         DBusMessageIter iter;
 246
 247         message = dbus_message_new_method_call("net.connman", path,
 248                         interface, "SetProperty");
 249
 250         if (message == NULL)
 251                 return -ENOMEM;
 252
 253         dbus_message_iter_init_append(message, &iter);
 254
 255         if (append_variant(&iter, property, type, value) < 0) {
 256                 dbus_message_unref(message);
 257                 return -EINVAL;
 258         }
 259
 260         return send_method_call(connection, message, cb, user_data);
 261 }
 262
 263 void __connmanctl_dbus_append_dict_entry(DBusMessageIter *iter, char *property,
 264                 int type, void *value)
 265 {
 266         DBusMessageIter dict_entry;
 267
 268         dbus_message_iter_open_container(iter, DBUS_TYPE_DICT_ENTRY, NULL,
 269                         &dict_entry);
 270
 271         append_variant(&dict_entry, property, type, value);
 272
 273         dbus_message_iter_close_container(iter, &dict_entry);
 274 }
 275
 276 int __connmanctl_dbus_set_property_dict(DBusConnection *connection,
 277                 const char *path, const char *interface,
 278                 connmanctl_dbus_method_return_func_t cb, void *user_data,
 279                 const char *property, int type,
 280                 connman_dbus_append_cb_t append_fn, void *append_user_data)
 281 {
 282         DBusMessage *message;
 283         DBusMessageIter iter, variant, dict;
 284
 285         message = dbus_message_new_method_call("net.connman", path,
 286                         interface, "SetProperty");
 287
 288         if (message == NULL)
 289                 return -ENOMEM;
 290
 291         dbus_message_iter_init_append(message, &iter);
 292         dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &property);
 293         dbus_message_iter_open_container(&iter, DBUS_TYPE_VARIANT,
 294                         DBUS_TYPE_ARRAY_AS_STRING
 295                                 DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 296                                         DBUS_TYPE_STRING_AS_STRING
 297                                         DBUS_TYPE_VARIANT_AS_STRING
 298                                 DBUS_DICT_ENTRY_END_CHAR_AS_STRING,
 299                         &variant);
 300
 301         dbus_message_iter_open_container(&variant, DBUS_TYPE_ARRAY,
 302                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 303                                 DBUS_TYPE_STRING_AS_STRING
 304                                 DBUS_TYPE_VARIANT_AS_STRING
 305                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING,
 306                         &dict);
 307
 308         append_fn(&dict, append_user_data);
 309
 310         dbus_message_iter_close_container(&variant, &dict);
 311         dbus_message_iter_close_container(&iter, &variant);
 312
 313         return send_method_call(connection, message, cb, user_data);
 314 }
 315
 316 static void append_variant_array(DBusMessageIter *iter, const char *property,
 317                 connman_dbus_append_cb_t append_fn, void *append_user_data)
 318 {
 319         DBusMessageIter variant, array;
 320
 321         dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING, &property);
 322         dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT,
 323                         DBUS_TYPE_ARRAY_AS_STRING
 324                                 DBUS_TYPE_STRING_AS_STRING,
 325                         &variant);
 326
 327         dbus_message_iter_open_container(&variant, DBUS_TYPE_ARRAY,
 328                         DBUS_TYPE_STRING_AS_STRING, &array);
 329
 330         append_fn(&array, append_user_data);
 331
 332         dbus_message_iter_close_container(&variant, &array);
 333         dbus_message_iter_close_container(iter, &variant);
 334 }
 335
 336 void __connmanctl_dbus_append_dict_string_array(DBusMessageIter *iter,
 337                 const char *property, connman_dbus_append_cb_t append_fn,
 338                 void *append_user_data)
 339 {
 340         DBusMessageIter dict_entry;
 341
 342         dbus_message_iter_open_container(iter, DBUS_TYPE_DICT_ENTRY, NULL,
 343                         &dict_entry);
 344
 345         append_variant_array(&dict_entry, property, append_fn,
 346                         append_user_data);
 347
 348         dbus_message_iter_close_container(iter, &dict_entry);
 349 }
 350
 351 int __connmanctl_dbus_set_property_array(DBusConnection *connection,
 352                 const char *path, const char *interface,
 353                 connmanctl_dbus_method_return_func_t cb, void *user_data,
 354                 const char *property, int type,
 355                 connman_dbus_append_cb_t append_fn, void *append_user_data)
 356 {
 357         DBusMessage *message;
 358         DBusMessageIter iter;
 359
 360         if (type != DBUS_TYPE_STRING)
 361                 return -EOPNOTSUPP;
 362
 363         message = dbus_message_new_method_call("net.connman", path,
 364                         interface, "SetProperty");
 365
 366         if (message == NULL)
 367                 return -ENOMEM;
 368
 369         dbus_message_iter_init_append(message, &iter);
 370
 371         append_variant_array(&iter, property, append_fn, append_user_data);
 372
 373         return send_method_call(connection, message, cb, user_data);
 374 }