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<hr><h1>driver.c</h1><div class="fragment"><pre>00001 <font class="comment">/* -*- mode: C; c-file-style: "gnu" -*- */</font>
00002 <font class="comment">/* driver.c Bus client (driver)</font>
00003 <font class="comment"> *</font>
00004 <font class="comment"> * Copyright (C) 2003 CodeFactory AB</font>
00005 <font class="comment"> * Copyright (C) 2003 Red Hat, Inc.</font>
00006 <font class="comment"> *</font>
00007 <font class="comment"> * Licensed under the Academic Free License version 1.2</font>
00008 <font class="comment"> * </font>
00009 <font class="comment"> * This program is free software; you can redistribute it and/or modify</font>
00010 <font class="comment"> * it under the terms of the GNU General Public License as published by</font>
00011 <font class="comment"> * the Free Software Foundation; either version 2 of the License, or</font>
00012 <font class="comment"> * (at your option) any later version.</font>
00013 <font class="comment"> *</font>
00014 <font class="comment"> * This program is distributed in the hope that it will be useful,</font>
00015 <font class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</font>
00016 <font class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</font>
00017 <font class="comment"> * GNU General Public License for more details.</font>
00018 <font class="comment"> * </font>
00019 <font class="comment"> * You should have received a copy of the GNU General Public License</font>
00020 <font class="comment"> * along with this program; if not, write to the Free Software</font>
00021 <font class="comment"> * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</font>
00022 <font class="comment"> *</font>
00023 <font class="comment"> */</font>
00024
00025 <font class="preprocessor">#include "activation.h"</font>
00026 <font class="preprocessor">#include "connection.h"</font>
00027 <font class="preprocessor">#include "driver.h"</font>
00028 <font class="preprocessor">#include "dispatch.h"</font>
00029 <font class="preprocessor">#include "services.h"</font>
00030 <font class="preprocessor">#include "signals.h"</font>
00031 <font class="preprocessor">#include "utils.h"</font>
00032 <font class="preprocessor">#include <dbus/dbus-string.h></font>
00033 <font class="preprocessor">#include <dbus/dbus-internals.h></font>
00034 <font class="preprocessor">#include <string.h></font>
00035
00036 <font class="keyword">static</font> dbus_bool_t bus_driver_send_welcome_message (<a class="code" href="structDBusConnection.html">DBusConnection</a> *connection,
00037 <a class="code" href="structDBusMessage.html">DBusMessage</a> *hello_message,
00038 BusTransaction *transaction,
00039 <a class="code" href="structDBusError.html">DBusError</a> *error);
00040
00041 dbus_bool_t
00042 bus_driver_send_service_deleted (<font class="keyword">const</font> <font class="keywordtype">char</font> *service_name,
00043 BusTransaction *transaction,
00044 <a class="code" href="structDBusError.html">DBusError</a> *error)
00045 {
00046 <a class="code" href="structDBusMessage.html">DBusMessage</a> *message;
00047 dbus_bool_t retval;
00048
00049 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
00050
00051 _dbus_verbose (<font class="stringliteral">"sending service deleted: %s\n"</font>, service_name);
00052
00053 message = dbus_message_new_signal (DBUS_PATH_ORG_FREEDESKTOP_DBUS,
00054 DBUS_INTERFACE_ORG_FREEDESKTOP_DBUS,
00055 <font class="stringliteral">"ServiceDeleted"</font>);
00056
00057 <font class="keywordflow">if</font> (message == NULL)
00058 {
00059 BUS_SET_OOM (error);
00060 <font class="keywordflow">return</font> FALSE;
00061 }
00062
00063 <font class="keywordflow">if</font> (!dbus_message_set_sender (message, DBUS_SERVICE_ORG_FREEDESKTOP_DBUS) ||
00064 !dbus_message_append_args (message,
00065 DBUS_TYPE_STRING, service_name,
00066 DBUS_TYPE_INVALID))
00067 {
00068 dbus_message_unref (message);
00069 BUS_SET_OOM (error);
00070 <font class="keywordflow">return</font> FALSE;
00071 }
00072
00073 retval = bus_dispatch_matches (transaction, NULL, NULL, message, error);
00074 dbus_message_unref (message);
00075
00076 <font class="keywordflow">return</font> retval;
00077 }
00078
00079 dbus_bool_t
00080 bus_driver_send_service_created (<font class="keyword">const</font> <font class="keywordtype">char</font> *service_name,
00081 BusTransaction *transaction,
00082 <a class="code" href="structDBusError.html">DBusError</a> *error)
00083 {
00084 <a class="code" href="structDBusMessage.html">DBusMessage</a> *message;
00085 dbus_bool_t retval;
00086
00087 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
00088
00089 message = dbus_message_new_signal (DBUS_PATH_ORG_FREEDESKTOP_DBUS,
00090 DBUS_INTERFACE_ORG_FREEDESKTOP_DBUS,
00091 <font class="stringliteral">"ServiceCreated"</font>);
00092
00093 <font class="keywordflow">if</font> (message == NULL)
00094 {
00095 BUS_SET_OOM (error);
00096 <font class="keywordflow">return</font> FALSE;
00097 }
00098
00099 <font class="keywordflow">if</font> (!dbus_message_set_sender (message, DBUS_SERVICE_ORG_FREEDESKTOP_DBUS))
00100 {
00101 dbus_message_unref (message);
00102 BUS_SET_OOM (error);
00103 <font class="keywordflow">return</font> FALSE;
00104 }
00105
00106 <font class="keywordflow">if</font> (!dbus_message_append_args (message,
00107 DBUS_TYPE_STRING, service_name,
00108 DBUS_TYPE_INVALID))
00109 {
00110 dbus_message_unref (message);
00111 BUS_SET_OOM (error);
00112 <font class="keywordflow">return</font> FALSE;
00113 }
00114
00115 retval = bus_dispatch_matches (transaction, NULL, NULL, message, error);
00116 dbus_message_unref (message);
00117
00118 <font class="keywordflow">return</font> retval;
00119 }
00120
00121 dbus_bool_t
00122 bus_driver_send_service_lost (<a class="code" href="structDBusConnection.html">DBusConnection</a> *connection,
00123 <font class="keyword">const</font> <font class="keywordtype">char</font> *service_name,
00124 BusTransaction *transaction,
00125 <a class="code" href="structDBusError.html">DBusError</a> *error)
00126 {
00127 <a class="code" href="structDBusMessage.html">DBusMessage</a> *message;
00128
00129 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
00130
00131 message = dbus_message_new_signal (DBUS_PATH_ORG_FREEDESKTOP_DBUS,
00132 DBUS_INTERFACE_ORG_FREEDESKTOP_DBUS,
00133 <font class="stringliteral">"ServiceLost"</font>);
00134
00135 <font class="keywordflow">if</font> (message == NULL)
00136 {
00137 BUS_SET_OOM (error);
00138 <font class="keywordflow">return</font> FALSE;
00139 }
00140
00141 <font class="keywordflow">if</font> (!dbus_message_set_destination (message, bus_connection_get_name (connection)) ||
00142 !dbus_message_append_args (message,
00143 DBUS_TYPE_STRING, service_name,
00144 DBUS_TYPE_INVALID))
00145 {
00146 dbus_message_unref (message);
00147 BUS_SET_OOM (error);
00148 <font class="keywordflow">return</font> FALSE;
00149 }
00150
00151 <font class="keywordflow">if</font> (!bus_transaction_send_from_driver (transaction, connection, message))
00152 {
00153 dbus_message_unref (message);
00154 BUS_SET_OOM (error);
00155 <font class="keywordflow">return</font> FALSE;
00156 }
00157 <font class="keywordflow">else</font>
00158 {
00159 dbus_message_unref (message);
00160 <font class="keywordflow">return</font> TRUE;
00161 }
00162 }
00163
00164 dbus_bool_t
00165 bus_driver_send_service_acquired (<a class="code" href="structDBusConnection.html">DBusConnection</a> *connection,
00166 <font class="keyword">const</font> <font class="keywordtype">char</font> *service_name,
00167 BusTransaction *transaction,
00168 <a class="code" href="structDBusError.html">DBusError</a> *error)
00169 {
00170 <a class="code" href="structDBusMessage.html">DBusMessage</a> *message;
00171
00172 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
00173
00174 message = dbus_message_new_signal (DBUS_PATH_ORG_FREEDESKTOP_DBUS,
00175 DBUS_INTERFACE_ORG_FREEDESKTOP_DBUS,
00176 <font class="stringliteral">"ServiceAcquired"</font>);
00177
00178 <font class="keywordflow">if</font> (message == NULL)
00179 {
00180 BUS_SET_OOM (error);
00181 <font class="keywordflow">return</font> FALSE;
00182 }
00183
00184 <font class="keywordflow">if</font> (!dbus_message_set_destination (message, bus_connection_get_name (connection)) ||
00185 !dbus_message_append_args (message,
00186 DBUS_TYPE_STRING, service_name,
00187 DBUS_TYPE_INVALID))
00188 {
00189 dbus_message_unref (message);
00190 BUS_SET_OOM (error);
00191 <font class="keywordflow">return</font> FALSE;
00192 }
00193
00194 <font class="keywordflow">if</font> (!bus_transaction_send_from_driver (transaction, connection, message))
00195 {
00196 dbus_message_unref (message);
00197 BUS_SET_OOM (error);
00198 <font class="keywordflow">return</font> FALSE;
00199 }
00200 <font class="keywordflow">else</font>
00201 {
00202 dbus_message_unref (message);
00203 <font class="keywordflow">return</font> TRUE;
00204 }
00205 }
00206
00207 <font class="keyword">static</font> dbus_bool_t
00208 create_unique_client_name (BusRegistry *registry,
00209 <a class="code" href="structDBusString.html">DBusString</a> *str)
00210 {
00211 <font class="comment">/* We never want to use the same unique client name twice, because</font>
00212 <font class="comment"> * we want to guarantee that if you send a message to a given unique</font>
00213 <font class="comment"> * name, you always get the same application. So we use two numbers</font>
00214 <font class="comment"> * for INT_MAX * INT_MAX combinations, should be pretty safe against</font>
00215 <font class="comment"> * wraparound.</font>
00216 <font class="comment"> */</font>
00217 <font class="comment">/* FIXME these should be in BusRegistry rather than static vars */</font>
00218 <font class="keyword">static</font> <font class="keywordtype">int</font> next_major_number = 0;
00219 <font class="keyword">static</font> <font class="keywordtype">int</font> next_minor_number = 0;
00220 <font class="keywordtype">int</font> len;
00221
00222 len = _dbus_string_get_length (str);
00223
00224 <font class="keywordflow">while</font> (TRUE)
00225 {
00226 <font class="comment">/* start out with 1-0, go to 1-1, 1-2, 1-3,</font>
00227 <font class="comment"> * up to 1-MAXINT, then 2-0, 2-1, etc.</font>
00228 <font class="comment"> */</font>
00229 <font class="keywordflow">if</font> (next_minor_number <= 0)
00230 {
00231 next_major_number += 1;
00232 next_minor_number = 0;
00233 <font class="keywordflow">if</font> (next_major_number <= 0)
00234 _dbus_assert_not_reached (<font class="stringliteral">"INT_MAX * INT_MAX clients were added"</font>);
00235 }
00236
00237 _dbus_assert (next_major_number > 0);
00238 _dbus_assert (next_minor_number >= 0);
00239
00240 <font class="comment">/* appname:MAJOR-MINOR */</font>
00241
00242 <font class="keywordflow">if</font> (!_dbus_string_append (str, <font class="stringliteral">":"</font>))
00243 <font class="keywordflow">return</font> FALSE;
00244
00245 <font class="keywordflow">if</font> (!_dbus_string_append_int (str, next_major_number))
00246 <font class="keywordflow">return</font> FALSE;
00247
00248 <font class="keywordflow">if</font> (!_dbus_string_append (str, <font class="stringliteral">"-"</font>))
00249 <font class="keywordflow">return</font> FALSE;
00250
00251 <font class="keywordflow">if</font> (!_dbus_string_append_int (str, next_minor_number))
00252 <font class="keywordflow">return</font> FALSE;
00253
00254 next_minor_number += 1;
00255
00256 <font class="comment">/* Check if a client with the name exists */</font>
00257 <font class="keywordflow">if</font> (bus_registry_lookup (registry, str) == NULL)
00258 <font class="keywordflow">break</font>;
00259
00260 <font class="comment">/* drop the number again, try the next one. */</font>
00261 _dbus_string_set_length (str, len);
00262 }
00263
00264 <font class="keywordflow">return</font> TRUE;
00265 }
00266
00267 <font class="keyword">static</font> dbus_bool_t
00268 bus_driver_handle_hello (<a class="code" href="structDBusConnection.html">DBusConnection</a> *connection,
00269 BusTransaction *transaction,
00270 <a class="code" href="structDBusMessage.html">DBusMessage</a> *message,
00271 <a class="code" href="structDBusError.html">DBusError</a> *error)
00272 {
00273 <a class="code" href="structDBusString.html">DBusString</a> unique_name;
00274 BusService *service;
00275 dbus_bool_t retval;
00276 BusRegistry *registry;
00277 BusConnections *connections;
00278
00279 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
00280
00281 <font class="comment">/* Note that when these limits are exceeded we don't disconnect the</font>
00282 <font class="comment"> * connection; we just sort of leave it hanging there until it times</font>
00283 <font class="comment"> * out or disconnects itself or is dropped due to the max number of</font>
00284 <font class="comment"> * incomplete connections. It's even OK if the connection wants to</font>
00285 <font class="comment"> * retry the hello message, we support that.</font>
00286 <font class="comment"> */</font>
00287 connections = bus_connection_get_connections (connection);
00288 <font class="keywordflow">if</font> (!bus_connections_check_limits (connections, connection,
00289 error))
00290 {
00291 _DBUS_ASSERT_ERROR_IS_SET (error);
00292 <font class="keywordflow">return</font> FALSE;
00293 }
00294
00295 <font class="keywordflow">if</font> (!_dbus_string_init (&unique_name))
00296 {
00297 BUS_SET_OOM (error);
00298 <font class="keywordflow">return</font> FALSE;
00299 }
00300
00301 retval = FALSE;
00302
00303 registry = bus_connection_get_registry (connection);
00304
00305 <font class="keywordflow">if</font> (!create_unique_client_name (registry, &unique_name))
00306 {
00307 BUS_SET_OOM (error);
00308 <font class="keywordflow">goto</font> out_0;
00309 }
00310
00311 <font class="keywordflow">if</font> (!bus_connection_complete (connection, &unique_name, error))
00312 {
00313 _DBUS_ASSERT_ERROR_IS_SET (error);
00314 <font class="keywordflow">goto</font> out_0;
00315 }
00316
00317 <font class="keywordflow">if</font> (!dbus_message_set_sender (message,
00318 bus_connection_get_name (connection)))
00319 {
00320 BUS_SET_OOM (error);
00321 <font class="keywordflow">goto</font> out_0;
00322 }
00323
00324 <font class="keywordflow">if</font> (!bus_driver_send_welcome_message (connection, message, transaction, error))
00325 <font class="keywordflow">goto</font> out_0;
00326
00327 <font class="comment">/* Create the service */</font>
00328 service = bus_registry_ensure (registry,
00329 &unique_name, connection, transaction, error);
00330 <font class="keywordflow">if</font> (service == NULL)
00331 <font class="keywordflow">goto</font> out_0;
00332
00333 bus_service_set_prohibit_replacement (service, TRUE);
00334
00335 _dbus_assert (bus_connection_is_active (connection));
00336 retval = TRUE;
00337
00338 out_0:
00339 _dbus_string_free (&unique_name);
00340 <font class="keywordflow">return</font> retval;
00341 }
00342
00343 <font class="keyword">static</font> dbus_bool_t
00344 bus_driver_send_welcome_message (<a class="code" href="structDBusConnection.html">DBusConnection</a> *connection,
00345 <a class="code" href="structDBusMessage.html">DBusMessage</a> *hello_message,
00346 BusTransaction *transaction,
00347 <a class="code" href="structDBusError.html">DBusError</a> *error)
00348 {
00349 <a class="code" href="structDBusMessage.html">DBusMessage</a> *welcome;
00350 <font class="keyword">const</font> <font class="keywordtype">char</font> *name;
00351
00352 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
00353
00354 name = bus_connection_get_name (connection);
00355 _dbus_assert (name != NULL);
00356
00357 welcome = dbus_message_new_method_return (hello_message);
00358 <font class="keywordflow">if</font> (welcome == NULL)
00359 {
00360 BUS_SET_OOM (error);
00361 <font class="keywordflow">return</font> FALSE;
00362 }
00363
00364 <font class="keywordflow">if</font> (!dbus_message_append_args (welcome,
00365 DBUS_TYPE_STRING, name,
00366 DBUS_TYPE_INVALID))
00367 {
00368 dbus_message_unref (welcome);
00369 BUS_SET_OOM (error);
00370 <font class="keywordflow">return</font> FALSE;
00371 }
00372
00373 <font class="keywordflow">if</font> (!bus_transaction_send_from_driver (transaction, connection, welcome))
00374 {
00375 dbus_message_unref (welcome);
00376 BUS_SET_OOM (error);
00377 <font class="keywordflow">return</font> FALSE;
00378 }
00379 <font class="keywordflow">else</font>
00380 {
00381 dbus_message_unref (welcome);
00382 <font class="keywordflow">return</font> TRUE;
00383 }
00384 }
00385
00386 <font class="keyword">static</font> dbus_bool_t
00387 bus_driver_handle_list_services (<a class="code" href="structDBusConnection.html">DBusConnection</a> *connection,
00388 BusTransaction *transaction,
00389 <a class="code" href="structDBusMessage.html">DBusMessage</a> *message,
00390 <a class="code" href="structDBusError.html">DBusError</a> *error)
00391 {
00392 <a class="code" href="structDBusMessage.html">DBusMessage</a> *reply;
00393 <font class="keywordtype">int</font> len;
00394 <font class="keywordtype">char</font> **services;
00395 BusRegistry *registry;
00396
00397 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
00398
00399 registry = bus_connection_get_registry (connection);
00400
00401 reply = dbus_message_new_method_return (message);
00402 <font class="keywordflow">if</font> (reply == NULL)
00403 {
00404 BUS_SET_OOM (error);
00405 <font class="keywordflow">return</font> FALSE;
00406 }
00407
00408 <font class="keywordflow">if</font> (!bus_registry_list_services (registry, &services, &len))
00409 {
00410 dbus_message_unref (reply);
00411 BUS_SET_OOM (error);
00412 <font class="keywordflow">return</font> FALSE;
00413 }
00414
00415 <font class="keywordflow">if</font> (!dbus_message_append_args (reply,
00416 DBUS_TYPE_ARRAY, DBUS_TYPE_STRING, services, len,
00417 DBUS_TYPE_INVALID))
00418 {
00419 dbus_free_string_array (services);
00420 dbus_message_unref (reply);
00421 BUS_SET_OOM (error);
00422 <font class="keywordflow">return</font> FALSE;
00423 }
00424
00425 dbus_free_string_array (services);
00426
00427 <font class="keywordflow">if</font> (!bus_transaction_send_from_driver (transaction, connection, reply))
00428 {
00429 dbus_message_unref (reply);
00430 BUS_SET_OOM (error);
00431 <font class="keywordflow">return</font> FALSE;
00432 }
00433 <font class="keywordflow">else</font>
00434 {
00435 dbus_message_unref (reply);
00436 <font class="keywordflow">return</font> TRUE;
00437 }
00438 }
00439
00440 <font class="keyword">static</font> dbus_bool_t
00441 bus_driver_handle_acquire_service (<a class="code" href="structDBusConnection.html">DBusConnection</a> *connection,
00442 BusTransaction *transaction,
00443 <a class="code" href="structDBusMessage.html">DBusMessage</a> *message,
00444 <a class="code" href="structDBusError.html">DBusError</a> *error)
00445 {
00446 <a class="code" href="structDBusMessage.html">DBusMessage</a> *reply;
00447 <a class="code" href="structDBusString.html">DBusString</a> service_name;
00448 <font class="keywordtype">char</font> *name;
00449 <font class="keywordtype">int</font> service_reply;
00450 <font class="keywordtype">int</font> flags;
00451 dbus_bool_t retval;
00452 BusRegistry *registry;
00453
00454 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
00455
00456 registry = bus_connection_get_registry (connection);
00457
00458 <font class="keywordflow">if</font> (!dbus_message_get_args (message, error,
00459 DBUS_TYPE_STRING, &name,
00460 DBUS_TYPE_UINT32, &flags,
00461 DBUS_TYPE_INVALID))
00462 <font class="keywordflow">return</font> FALSE;
00463
00464 _dbus_verbose (<font class="stringliteral">"Trying to own service %s with flags 0x%x\n"</font>, name, flags);
00465
00466 retval = FALSE;
00467 reply = NULL;
00468
00469 _dbus_string_init_const (&service_name, name);
00470
00471 <font class="keywordflow">if</font> (!bus_registry_acquire_service (registry, connection,
00472 &service_name, flags,
00473 &service_reply, transaction,
00474 error))
00475 <font class="keywordflow">goto</font> out;
00476
00477 reply = dbus_message_new_method_return (message);
00478 <font class="keywordflow">if</font> (reply == NULL)
00479 {
00480 BUS_SET_OOM (error);
00481 <font class="keywordflow">goto</font> out;
00482 }
00483
00484 <font class="keywordflow">if</font> (!dbus_message_append_args (reply, DBUS_TYPE_UINT32, service_reply, DBUS_TYPE_INVALID))
00485 {
00486 BUS_SET_OOM (error);
00487 <font class="keywordflow">goto</font> out;
00488 }
00489
00490 <font class="keywordflow">if</font> (!bus_transaction_send_from_driver (transaction, connection, reply))
00491 {
00492 BUS_SET_OOM (error);
00493 <font class="keywordflow">goto</font> out;
00494 }
00495
00496 retval = TRUE;
00497
00498 out:
00499 dbus_free (name);
00500 <font class="keywordflow">if</font> (reply)
00501 dbus_message_unref (reply);
00502 <font class="keywordflow">return</font> retval;
00503 }
00504
00505 <font class="keyword">static</font> dbus_bool_t
00506 bus_driver_handle_service_exists (<a class="code" href="structDBusConnection.html">DBusConnection</a> *connection,
00507 BusTransaction *transaction,
00508 <a class="code" href="structDBusMessage.html">DBusMessage</a> *message,
00509 <a class="code" href="structDBusError.html">DBusError</a> *error)
00510 {
00511 <a class="code" href="structDBusMessage.html">DBusMessage</a> *reply;
00512 <a class="code" href="structDBusString.html">DBusString</a> service_name;
00513 BusService *service;
00514 <font class="keywordtype">char</font> *name;
00515 dbus_bool_t retval;
00516 BusRegistry *registry;
00517
00518 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
00519
00520 registry = bus_connection_get_registry (connection);
00521
00522 <font class="keywordflow">if</font> (!dbus_message_get_args (message, error,
00523 DBUS_TYPE_STRING, &name,
00524 DBUS_TYPE_INVALID))
00525 <font class="keywordflow">return</font> FALSE;
00526
00527 retval = FALSE;
00528
00529 _dbus_string_init_const (&service_name, name);
00530 service = bus_registry_lookup (registry, &service_name);
00531
00532 reply = dbus_message_new_method_return (message);
00533 <font class="keywordflow">if</font> (reply == NULL)
00534 {
00535 BUS_SET_OOM (error);
00536 <font class="keywordflow">goto</font> out;
00537 }
00538
00539 <font class="keywordflow">if</font> (!dbus_message_append_args (reply,
00540 DBUS_TYPE_UINT32, service != NULL,
00541 0))
00542 {
00543 BUS_SET_OOM (error);
00544 <font class="keywordflow">goto</font> out;
00545 }
00546
00547 <font class="keywordflow">if</font> (!bus_transaction_send_from_driver (transaction, connection, reply))
00548 {
00549 BUS_SET_OOM (error);
00550 <font class="keywordflow">goto</font> out;
00551 }
00552
00553 retval = TRUE;
00554
00555 out:
00556 <font class="keywordflow">if</font> (reply)
00557 dbus_message_unref (reply);
00558 dbus_free (name);
00559
00560 <font class="keywordflow">return</font> retval;
00561 }
00562
00563 <font class="keyword">static</font> dbus_bool_t
00564 bus_driver_handle_activate_service (<a class="code" href="structDBusConnection.html">DBusConnection</a> *connection,
00565 BusTransaction *transaction,
00566 <a class="code" href="structDBusMessage.html">DBusMessage</a> *message,
00567 <a class="code" href="structDBusError.html">DBusError</a> *error)
00568 {
00569 dbus_uint32_t flags;
00570 <font class="keywordtype">char</font> *name;
00571 dbus_bool_t retval;
00572 BusActivation *activation;
00573
00574 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
00575
00576 activation = bus_connection_get_activation (connection);
00577
00578 <font class="keywordflow">if</font> (!dbus_message_get_args (message, error,
00579 DBUS_TYPE_STRING, &name,
00580 DBUS_TYPE_UINT32, &flags,
00581 DBUS_TYPE_INVALID))
00582 {
00583 _DBUS_ASSERT_ERROR_IS_SET (error);
00584 _dbus_verbose (<font class="stringliteral">"No memory to get arguments to ActivateService\n"</font>);
00585 <font class="keywordflow">return</font> FALSE;
00586 }
00587
00588 retval = FALSE;
00589
00590 <font class="keywordflow">if</font> (!bus_activation_activate_service (activation, connection, transaction,
00591 message, name, error))
00592 {
00593 _DBUS_ASSERT_ERROR_IS_SET (error);
00594 _dbus_verbose (<font class="stringliteral">"bus_activation_activate_service() failed\n"</font>);
00595 <font class="keywordflow">goto</font> out;
00596 }
00597
00598 retval = TRUE;
00599
00600 out:
00601 dbus_free (name);
00602 <font class="keywordflow">return</font> retval;
00603 }
00604
00605 <font class="keyword">static</font> dbus_bool_t
00606 send_ack_reply (<a class="code" href="structDBusConnection.html">DBusConnection</a> *connection,
00607 BusTransaction *transaction,
00608 <a class="code" href="structDBusMessage.html">DBusMessage</a> *message,
00609 <a class="code" href="structDBusError.html">DBusError</a> *error)
00610 {
00611 <a class="code" href="structDBusMessage.html">DBusMessage</a> *reply;
00612
00613 reply = dbus_message_new_method_return (message);
00614 <font class="keywordflow">if</font> (reply == NULL)
00615 {
00616 BUS_SET_OOM (error);
00617 <font class="keywordflow">return</font> FALSE;
00618 }
00619
00620 <font class="keywordflow">if</font> (!bus_transaction_send_from_driver (transaction, connection, reply))
00621 {
00622 BUS_SET_OOM (error);
00623 dbus_message_unref (reply);
00624 <font class="keywordflow">return</font> FALSE;
00625 }
00626
00627 dbus_message_unref (reply);
00628
00629 <font class="keywordflow">return</font> TRUE;
00630 }
00631
00632 <font class="keyword">static</font> dbus_bool_t
00633 bus_driver_handle_add_match (<a class="code" href="structDBusConnection.html">DBusConnection</a> *connection,
00634 BusTransaction *transaction,
00635 <a class="code" href="structDBusMessage.html">DBusMessage</a> *message,
00636 <a class="code" href="structDBusError.html">DBusError</a> *error)
00637 {
00638 BusMatchRule *rule;
00639 <font class="keywordtype">char</font> *text;
00640 <a class="code" href="structDBusString.html">DBusString</a> str;
00641 BusMatchmaker *matchmaker;
00642
00643 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
00644
00645 text = NULL;
00646 rule = NULL;
00647
00648 <font class="keywordflow">if</font> (bus_connection_get_n_match_rules (connection) >=
00649 bus_context_get_max_match_rules_per_connection (bus_transaction_get_context (transaction)))
00650 {
00651 dbus_set_error (error, DBUS_ERROR_LIMITS_EXCEEDED,
00652 <font class="stringliteral">"Connection \"%s\" is not allowed to add more match rules "</font>
00653 <font class="stringliteral">"(increase limits in configuration file if required)"</font>,
00654 bus_connection_is_active (connection) ?
00655 bus_connection_get_name (connection) :
00656 "(inactive)");
00657 <font class="keywordflow">goto</font> failed;
00658 }
00659
00660 <font class="keywordflow">if</font> (!dbus_message_get_args (message, error,
00661 DBUS_TYPE_STRING, &text,
00662 DBUS_TYPE_INVALID))
00663 {
00664 _dbus_verbose (<font class="stringliteral">"No memory to get arguments to AddMatch\n"</font>);
00665 <font class="keywordflow">goto</font> failed;
00666 }
00667
00668 _dbus_string_init_const (&str, text);
00669
00670 rule = bus_match_rule_parse (connection, &str, error);
00671 <font class="keywordflow">if</font> (rule == NULL)
00672 <font class="keywordflow">goto</font> failed;
00673
00674 matchmaker = bus_connection_get_matchmaker (connection);
00675
00676 <font class="keywordflow">if</font> (!bus_matchmaker_add_rule (matchmaker, rule))
00677 {
00678 BUS_SET_OOM (error);
00679 <font class="keywordflow">goto</font> failed;
00680 }
00681
00682 <font class="keywordflow">if</font> (!send_ack_reply (connection, transaction,
00683 message, error))
00684 {
00685 bus_matchmaker_remove_rule (matchmaker, rule);
00686 <font class="keywordflow">goto</font> failed;
00687 }
00688
00689 bus_match_rule_unref (rule);
00690 dbus_free (text);
00691
00692 <font class="keywordflow">return</font> TRUE;
00693
00694 failed:
00695 _DBUS_ASSERT_ERROR_IS_SET (error);
00696 <font class="keywordflow">if</font> (rule)
00697 bus_match_rule_unref (rule);
00698 <font class="keywordflow">if</font> (text)
00699 dbus_free (text);
00700 <font class="keywordflow">return</font> FALSE;
00701 }
00702
00703 <font class="keyword">static</font> dbus_bool_t
00704 bus_driver_handle_remove_match (<a class="code" href="structDBusConnection.html">DBusConnection</a> *connection,
00705 BusTransaction *transaction,
00706 <a class="code" href="structDBusMessage.html">DBusMessage</a> *message,
00707 <a class="code" href="structDBusError.html">DBusError</a> *error)
00708 {
00709 BusMatchRule *rule;
00710 <font class="keywordtype">char</font> *text;
00711 <a class="code" href="structDBusString.html">DBusString</a> str;
00712 BusMatchmaker *matchmaker;
00713
00714 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
00715
00716 text = NULL;
00717 rule = NULL;
00718
00719 <font class="keywordflow">if</font> (!dbus_message_get_args (message, error,
00720 DBUS_TYPE_STRING, &text,
00721 DBUS_TYPE_INVALID))
00722 {
00723 _dbus_verbose (<font class="stringliteral">"No memory to get arguments to RemoveMatch\n"</font>);
00724 <font class="keywordflow">goto</font> failed;
00725 }
00726
00727 _dbus_string_init_const (&str, text);
00728
00729 rule = bus_match_rule_parse (connection, &str, error);
00730 <font class="keywordflow">if</font> (rule == NULL)
00731 <font class="keywordflow">goto</font> failed;
00732
00733 <font class="comment">/* Send the ack before we remove the rule, since the ack is undone</font>
00734 <font class="comment"> * on transaction cancel, but rule removal isn't.</font>
00735 <font class="comment"> */</font>
00736 <font class="keywordflow">if</font> (!send_ack_reply (connection, transaction,
00737 message, error))
00738 <font class="keywordflow">goto</font> failed;
00739
00740 matchmaker = bus_connection_get_matchmaker (connection);
00741
00742 <font class="keywordflow">if</font> (!bus_matchmaker_remove_rule_by_value (matchmaker, rule, error))
00743 <font class="keywordflow">goto</font> failed;
00744
00745 bus_match_rule_unref (rule);
00746 dbus_free (text);
00747
00748 <font class="keywordflow">return</font> TRUE;
00749
00750 failed:
00751 _DBUS_ASSERT_ERROR_IS_SET (error);
00752 <font class="keywordflow">if</font> (rule)
00753 bus_match_rule_unref (rule);
00754 <font class="keywordflow">if</font> (text)
00755 dbus_free (text);
00756 <font class="keywordflow">return</font> FALSE;
00757 }
00758
00759 <font class="comment">/* For speed it might be useful to sort this in order of</font>
00760 <font class="comment"> * frequency of use (but doesn't matter with only a few items</font>
00761 <font class="comment"> * anyhow)</font>
00762 <font class="comment"> */</font>
00763 <font class="keyword">struct</font>
00764 <font class="keyword"></font>{
00765 <font class="keyword">const</font> <font class="keywordtype">char</font> *name;
00766 dbus_bool_t (* handler) (<a class="code" href="structDBusConnection.html">DBusConnection</a> *connection,
00767 BusTransaction *transaction,
00768 <a class="code" href="structDBusMessage.html">DBusMessage</a> *message,
00769 <a class="code" href="structDBusError.html">DBusError</a> *error);
00770 } message_handlers[] = {
00771 { <font class="stringliteral">"AcquireService"</font>, bus_driver_handle_acquire_service },
00772 { <font class="stringliteral">"ActivateService"</font>, bus_driver_handle_activate_service },
00773 { <font class="stringliteral">"Hello"</font>, bus_driver_handle_hello },
00774 { <font class="stringliteral">"ServiceExists"</font>, bus_driver_handle_service_exists },
00775 { <font class="stringliteral">"ListServices"</font>, bus_driver_handle_list_services },
00776 { <font class="stringliteral">"AddMatch"</font>, bus_driver_handle_add_match },
00777 { <font class="stringliteral">"RemoveMatch"</font>, bus_driver_handle_remove_match }
00778 };
00779
00780 dbus_bool_t
00781 bus_driver_handle_message (<a class="code" href="structDBusConnection.html">DBusConnection</a> *connection,
00782 BusTransaction *transaction,
00783 <a class="code" href="structDBusMessage.html">DBusMessage</a> *message,
00784 <a class="code" href="structDBusError.html">DBusError</a> *error)
00785 {
00786 <font class="keyword">const</font> <font class="keywordtype">char</font> *name, *sender;
00787 <font class="keywordtype">int</font> i;
00788
00789 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
00790
00791 <font class="keywordflow">if</font> (dbus_message_get_type (message) != DBUS_MESSAGE_TYPE_METHOD_CALL)
00792 {
00793 _dbus_verbose (<font class="stringliteral">"Driver got a non-method-call message, ignoring\n"</font>);
00794 <font class="keywordflow">return</font> TRUE; <font class="comment">/* we just ignore this */</font>
00795 }
00796
00797 _dbus_assert (dbus_message_get_interface (message) != NULL);
00798 _dbus_assert (dbus_message_get_member (message) != NULL);
00799
00800 name = dbus_message_get_member (message);
00801 sender = dbus_message_get_sender (message);
00802
00803 <font class="keywordflow">if</font> (strcmp (dbus_message_get_interface (message),
00804 DBUS_INTERFACE_ORG_FREEDESKTOP_DBUS) != 0)
00805 {
00806 _dbus_verbose (<font class="stringliteral">"Driver got message to unknown interface \"%s\"\n"</font>,
00807 dbus_message_get_interface (message));
00808 <font class="keywordflow">goto</font> unknown;
00809 }
00810
00811 _dbus_verbose (<font class="stringliteral">"Driver got a method call: %s\n"</font>,
00812 dbus_message_get_member (message));
00813
00814 <font class="comment">/* security checks should have kept this from getting here */</font>
00815 _dbus_assert (sender != NULL || strcmp (name, <font class="stringliteral">"Hello"</font>) == 0);
00816
00817 <font class="keywordflow">if</font> (dbus_message_get_reply_serial (message) == 0)
00818 {
00819 _dbus_verbose (<font class="stringliteral">"Client sent a reply to the bus driver, ignoring it\n"</font>);
00820 <font class="keywordflow">return</font> TRUE;
00821 }
00822
00823 i = 0;
00824 <font class="keywordflow">while</font> (i < _DBUS_N_ELEMENTS (message_handlers))
00825 {
00826 <font class="keywordflow">if</font> (strcmp (message_handlers[i].name, name) == 0)
00827 {
00828 _dbus_verbose (<font class="stringliteral">"Running driver handler for %s\n"</font>, name);
00829 <font class="keywordflow">if</font> ((* message_handlers[i].handler) (connection, transaction, message, error))
00830 {
00831 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
00832 _dbus_verbose (<font class="stringliteral">"Driver handler succeeded\n"</font>);
00833 <font class="keywordflow">return</font> TRUE;
00834 }
00835 <font class="keywordflow">else</font>
00836 {
00837 _DBUS_ASSERT_ERROR_IS_SET (error);
00838 _dbus_verbose (<font class="stringliteral">"Driver handler returned failure\n"</font>);
00839 <font class="keywordflow">return</font> FALSE;
00840 }
00841 }
00842
00843 ++i;
00844 }
00845
00846 unknown:
00847 _dbus_verbose (<font class="stringliteral">"No driver handler for message \"%s\"\n"</font>,
00848 name);
00849
00850 dbus_set_error (error, DBUS_ERROR_UNKNOWN_METHOD,
00851 <font class="stringliteral">"%s does not understand message %s"</font>,
00852 DBUS_SERVICE_ORG_FREEDESKTOP_DBUS, name);
00853
00854 <font class="keywordflow">return</font> FALSE;
00855 }
00856
00857 <font class="keywordtype">void</font>
00858 bus_driver_remove_connection (<a class="code" href="structDBusConnection.html">DBusConnection</a> *connection)
00859 {
00860 <font class="comment">/* FIXME Does nothing for now, should unregister the connection</font>
00861 <font class="comment"> * with the bus driver.</font>
00862 <font class="comment"> */</font>
00863 }
</pre></div><hr><address align="right"><small>Generated on Mon Sep 29 21:31:02 2003 for D-BUS by
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border=0
width=110 height=53></a>1.2.15 </small></address>
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distrib
>
Mandriva
>
2007.0
>
x86_64
>
media
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