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<hr><h1>dbus-server-unix.c</h1><div class="fragment"><pre>00001 <font class="comment">/* -*- mode: C; c-file-style: "gnu" -*- */</font>
00002 <font class="comment">/* dbus-server-unix.c Server implementation for Unix network protocols.</font>
00003 <font class="comment"> *</font>
00004 <font class="comment"> * Copyright (C) 2002, 2003 Red Hat Inc.</font>
00005 <font class="comment"> *</font>
00006 <font class="comment"> * Licensed under the Academic Free License version 2.0</font>
00007 <font class="comment"> * </font>
00008 <font class="comment"> * This program is free software; you can redistribute it and/or modify</font>
00009 <font class="comment"> * it under the terms of the GNU General Public License as published by</font>
00010 <font class="comment"> * the Free Software Foundation; either version 2 of the License, or</font>
00011 <font class="comment"> * (at your option) any later version.</font>
00012 <font class="comment"> *</font>
00013 <font class="comment"> * This program is distributed in the hope that it will be useful,</font>
00014 <font class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</font>
00015 <font class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</font>
00016 <font class="comment"> * GNU General Public License for more details.</font>
00017 <font class="comment"> * </font>
00018 <font class="comment"> * You should have received a copy of the GNU General Public License</font>
00019 <font class="comment"> * along with this program; if not, write to the Free Software</font>
00020 <font class="comment"> * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</font>
00021 <font class="comment"> *</font>
00022 <font class="comment"> */</font>
00023
00024 <font class="preprocessor">#include "dbus-internals.h"</font>
00025 <font class="preprocessor">#include "dbus-server-unix.h"</font>
00026 <font class="preprocessor">#include "dbus-transport-unix.h"</font>
00027 <font class="preprocessor">#include "dbus-connection-internal.h"</font>
00028 <font class="preprocessor">#include "dbus-string.h"</font>
00029 <font class="preprocessor">#include <sys/types.h></font>
00030 <font class="preprocessor">#include <unistd.h></font>
00031
<a name="l00043"></a><a class="code" href="group__DBusServerUnix.html#a0">00043</a> <font class="keyword">typedef</font> <font class="keyword">struct </font><a class="code" href="structDBusServerUnix.html">DBusServerUnix</a> DBusServerUnix;
00044
<a name="l00049"></a><a class="code" href="structDBusServerUnix.html">00049</a> <font class="keyword">struct </font>DBusServerUnix
00050 {
<a name="l00051"></a><a class="code" href="structDBusServerUnix.html#m0">00051</a> <a class="code" href="structDBusServer.html">DBusServer</a> <a class="code" href="structDBusServerUnix.html#m0">base</a>;
<a name="l00052"></a><a class="code" href="structDBusServerUnix.html#m1">00052</a> <font class="keywordtype">int</font> <a class="code" href="structDBusServerUnix.html#m1">fd</a>;
<a name="l00053"></a><a class="code" href="structDBusServerUnix.html#m2">00053</a> <a class="code" href="structDBusWatch.html">DBusWatch</a> *<a class="code" href="structDBusServerUnix.html#m2">watch</a>;
<a name="l00054"></a><a class="code" href="structDBusServerUnix.html#m3">00054</a> <font class="keywordtype">char</font> *<a class="code" href="structDBusServerUnix.html#m3">socket_name</a>;
00055 };
00056
00057 <font class="keyword">static</font> <font class="keywordtype">void</font>
00058 unix_finalize (<a class="code" href="structDBusServer.html">DBusServer</a> *server)
00059 {
00060 DBusServerUnix *unix_server = (DBusServerUnix*) server;
00061
00062 dbus_free (unix_server-><a class="code" href="structDBusServerUnix.html#m3">socket_name</a>);
00063
00064 _dbus_server_finalize_base (server);
00065
00066 dbus_free (server);
00067 }
00068
00074 <font class="comment">/* Return value is just for memory, not other failures. */</font>
00075 <font class="keyword">static</font> dbus_bool_t
00076 handle_new_client_fd (<a class="code" href="structDBusServer.html">DBusServer</a> *server,
00077 <font class="keywordtype">int</font> client_fd)
00078 {
00079 <a class="code" href="structDBusConnection.html">DBusConnection</a> *connection;
00080 <a class="code" href="structDBusTransport.html">DBusTransport</a> *transport;
00081
00082 _dbus_verbose (<font class="stringliteral">"Creating new client connection with fd %d\n"</font>, client_fd);
00083
00084 <font class="keywordflow">if</font> (!_dbus_set_fd_nonblocking (client_fd, NULL))
00085 <font class="keywordflow">return</font> TRUE;
00086
00087 transport = _dbus_transport_new_for_fd (client_fd, TRUE, NULL);
00088 <font class="keywordflow">if</font> (transport == NULL)
00089 {
00090 close (client_fd);
00091 <font class="keywordflow">return</font> FALSE;
00092 }
00093
00094 <font class="keywordflow">if</font> (!_dbus_transport_set_auth_mechanisms (transport,
00095 (<font class="keyword">const</font> <font class="keywordtype">char</font> **) server-><a class="code" href="structDBusServer.html#m10">auth_mechanisms</a>))
00096 {
00097 _dbus_transport_unref (transport);
00098 <font class="keywordflow">return</font> FALSE;
00099 }
00100
00101 <font class="comment">/* note that client_fd is now owned by the transport, and will be</font>
00102 <font class="comment"> * closed on transport disconnection/finalization</font>
00103 <font class="comment"> */</font>
00104
00105 connection = _dbus_connection_new_for_transport (transport);
00106 _dbus_transport_unref (transport);
00107
00108 <font class="keywordflow">if</font> (connection == NULL)
00109 <font class="keywordflow">return</font> FALSE;
00110
00111 <font class="comment">/* See if someone wants to handle this new connection,</font>
00112 <font class="comment"> * self-referencing for paranoia</font>
00113 <font class="comment"> */</font>
00114 <font class="keywordflow">if</font> (server-><a class="code" href="structDBusServer.html#m7">new_connection_function</a>)
00115 {
00116 dbus_server_ref (server);
00117
00118 (* server-><a class="code" href="structDBusServer.html#m7">new_connection_function</a>) (server, connection,
00119 server-><a class="code" href="structDBusServer.html#m8">new_connection_data</a>);
00120 dbus_server_unref (server);
00121 }
00122
00123 <font class="comment">/* If no one grabbed a reference, the connection will die. */</font>
00124 dbus_connection_unref (connection);
00125
00126 <font class="keywordflow">return</font> TRUE;
00127 }
00128
00129 <font class="keyword">static</font> dbus_bool_t
00130 unix_handle_watch (<a class="code" href="structDBusWatch.html">DBusWatch</a> *watch,
00131 <font class="keywordtype">unsigned</font> <font class="keywordtype">int</font> flags,
00132 <font class="keywordtype">void</font> *data)
00133 {
00134 <a class="code" href="structDBusServer.html">DBusServer</a> *server = data;
00135 DBusServerUnix *unix_server = data;
00136
00137 _dbus_assert (watch == unix_server-><a class="code" href="structDBusServerUnix.html#m2">watch</a>);
00138
00139 _dbus_verbose (<font class="stringliteral">"Handling client connection, flags 0x%x\n"</font>, flags);
00140
00141 <font class="keywordflow">if</font> (flags & DBUS_WATCH_READABLE)
00142 {
00143 <font class="keywordtype">int</font> client_fd;
00144 <font class="keywordtype">int</font> listen_fd;
00145
00146 listen_fd = dbus_watch_get_fd (watch);
00147
00148 client_fd = _dbus_accept (listen_fd);
00149
00150 <font class="keywordflow">if</font> (client_fd < 0)
00151 {
00152 <font class="comment">/* EINTR handled for us */</font>
00153
00154 <font class="keywordflow">if</font> (errno == EAGAIN || errno == EWOULDBLOCK)
00155 _dbus_verbose (<font class="stringliteral">"No client available to accept after all\n"</font>);
00156 <font class="keywordflow">else</font>
00157 _dbus_verbose (<font class="stringliteral">"Failed to accept a client connection: %s\n"</font>,
00158 _dbus_strerror (errno));
00159 }
00160 <font class="keywordflow">else</font>
00161 {
00162 _dbus_fd_set_close_on_exec (client_fd);
00163
00164 <font class="keywordflow">if</font> (!handle_new_client_fd (server, client_fd))
00165 _dbus_verbose (<font class="stringliteral">"Rejected client connection due to lack of memory\n"</font>);
00166 }
00167 }
00168
00169 <font class="keywordflow">if</font> (flags & DBUS_WATCH_ERROR)
00170 _dbus_verbose (<font class="stringliteral">"Error on server listening socket\n"</font>);
00171
00172 <font class="keywordflow">if</font> (flags & DBUS_WATCH_HANGUP)
00173 _dbus_verbose (<font class="stringliteral">"Hangup on server listening socket\n"</font>);
00174
00175 <font class="keywordflow">return</font> TRUE;
00176 }
00177
00178 <font class="keyword">static</font> <font class="keywordtype">void</font>
00179 unix_disconnect (<a class="code" href="structDBusServer.html">DBusServer</a> *server)
00180 {
00181 DBusServerUnix *unix_server = (DBusServerUnix*) server;
00182
00183 <font class="keywordflow">if</font> (unix_server-><a class="code" href="structDBusServerUnix.html#m2">watch</a>)
00184 {
00185 _dbus_server_remove_watch (server,
00186 unix_server-><a class="code" href="structDBusServerUnix.html#m2">watch</a>);
00187 _dbus_watch_unref (unix_server-><a class="code" href="structDBusServerUnix.html#m2">watch</a>);
00188 unix_server-><a class="code" href="structDBusServerUnix.html#m2">watch</a> = NULL;
00189 }
00190
00191 close (unix_server-><a class="code" href="structDBusServerUnix.html#m1">fd</a>);
00192 unix_server-><a class="code" href="structDBusServerUnix.html#m1">fd</a> = -1;
00193
00194 <font class="keywordflow">if</font> (unix_server-><a class="code" href="structDBusServerUnix.html#m3">socket_name</a> != NULL)
00195 {
00196 <a class="code" href="structDBusString.html">DBusString</a> tmp;
00197 _dbus_string_init_const (&tmp, unix_server-><a class="code" href="structDBusServerUnix.html#m3">socket_name</a>);
00198 _dbus_delete_file (&tmp, NULL);
00199 }
00200 }
00201
00202 <font class="keyword">static</font> <a class="code" href="structDBusServerVTable.html">DBusServerVTable</a> unix_vtable = {
00203 unix_finalize,
00204 unix_disconnect
00205 };
00206
00220 <a class="code" href="structDBusServer.html">DBusServer</a>*
<a name="l00221"></a><a class="code" href="group__DBusServerUnix.html#a6">00221</a> _dbus_server_new_for_fd (<font class="keywordtype">int</font> fd,
00222 <font class="keyword">const</font> <a class="code" href="structDBusString.html">DBusString</a> *address)
00223 {
00224 DBusServerUnix *unix_server;
00225 <a class="code" href="structDBusWatch.html">DBusWatch</a> *watch;
00226
00227 unix_server = dbus_new0 (DBusServerUnix, 1);
00228 <font class="keywordflow">if</font> (unix_server == NULL)
00229 <font class="keywordflow">return</font> NULL;
00230
00231 watch = _dbus_watch_new (fd,
00232 DBUS_WATCH_READABLE,
00233 TRUE,
00234 unix_handle_watch, unix_server,
00235 NULL);
00236 <font class="keywordflow">if</font> (watch == NULL)
00237 {
00238 dbus_free (unix_server);
00239 <font class="keywordflow">return</font> NULL;
00240 }
00241
00242 <font class="keywordflow">if</font> (!_dbus_server_init_base (&unix_server-><a class="code" href="structDBusServerUnix.html#m0">base</a>,
00243 &unix_vtable, address))
00244 {
00245 _dbus_watch_unref (watch);
00246 dbus_free (unix_server);
00247 <font class="keywordflow">return</font> NULL;
00248 }
00249
00250 <font class="keywordflow">if</font> (!_dbus_server_add_watch (&unix_server-><a class="code" href="structDBusServerUnix.html#m0">base</a>,
00251 watch))
00252 {
00253 _dbus_server_finalize_base (&unix_server-><a class="code" href="structDBusServerUnix.html#m0">base</a>);
00254 _dbus_watch_unref (watch);
00255 dbus_free (unix_server);
00256 <font class="keywordflow">return</font> NULL;
00257 }
00258
00259 unix_server-><a class="code" href="structDBusServerUnix.html#m1">fd</a> = fd;
00260 unix_server-><a class="code" href="structDBusServerUnix.html#m2">watch</a> = watch;
00261
00262 <font class="keywordflow">return</font> (<a class="code" href="structDBusServer.html">DBusServer</a>*) unix_server;
00263 }
00264
00273 <a class="code" href="structDBusServer.html">DBusServer</a>*
<a name="l00274"></a><a class="code" href="group__DBusServerUnix.html#a7">00274</a> _dbus_server_new_for_domain_socket (<font class="keyword">const</font> <font class="keywordtype">char</font> *path,
00275 dbus_bool_t <font class="keyword">abstract</font>,
00276 <a class="code" href="structDBusError.html">DBusError</a> *error)
00277 {
00278 <a class="code" href="structDBusServer.html">DBusServer</a> *server;
00279 DBusServerUnix *unix_server;
00280 <font class="keywordtype">int</font> listen_fd;
00281 <a class="code" href="structDBusString.html">DBusString</a> address;
00282 <font class="keywordtype">char</font> *path_copy;
00283
00284 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
00285
00286 <font class="keywordflow">if</font> (!_dbus_string_init (&address))
00287 {
00288 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
00289 <font class="keywordflow">return</font> NULL;
00290 }
00291
00292 <font class="keywordflow">if</font> ((<font class="keyword">abstract</font> &&
00293 !_dbus_string_append (&address, <font class="stringliteral">"unix:abstract="</font>)) ||
00294 (!<font class="keyword">abstract</font> &&
00295 !_dbus_string_append (&address, <font class="stringliteral">"unix:path="</font>)) ||
00296 !_dbus_string_append (&address, path))
00297 {
00298 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
00299 <font class="keywordflow">goto</font> failed_0;
00300 }
00301
00302 path_copy = _dbus_strdup (path);
00303 <font class="keywordflow">if</font> (path_copy == NULL)
00304 {
00305 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
00306 <font class="keywordflow">goto</font> failed_0;
00307 }
00308
00309 listen_fd = _dbus_listen_unix_socket (path, <font class="keyword">abstract</font>, error);
00310 _dbus_fd_set_close_on_exec (listen_fd);
00311
00312 <font class="keywordflow">if</font> (listen_fd < 0)
00313 {
00314 _DBUS_ASSERT_ERROR_IS_SET (error);
00315 <font class="keywordflow">goto</font> failed_1;
00316 }
00317
00318 server = _dbus_server_new_for_fd (listen_fd, &address);
00319 <font class="keywordflow">if</font> (server == NULL)
00320 {
00321 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
00322 <font class="keywordflow">goto</font> failed_2;
00323 }
00324
00325 unix_server = (DBusServerUnix*) server;
00326 unix_server-><a class="code" href="structDBusServerUnix.html#m3">socket_name</a> = path_copy;
00327
00328 _dbus_string_free (&address);
00329
00330 <font class="keywordflow">return</font> server;
00331
00332 failed_2:
00333 _dbus_close (listen_fd, NULL);
00334 failed_1:
00335 dbus_free (path_copy);
00336 failed_0:
00337 _dbus_string_free (&address);
00338
00339 <font class="keywordflow">return</font> NULL;
00340 }
00341
00351 <a class="code" href="structDBusServer.html">DBusServer</a>*
<a name="l00352"></a><a class="code" href="group__DBusServerUnix.html#a8">00352</a> _dbus_server_new_for_tcp_socket (<font class="keyword">const</font> <font class="keywordtype">char</font> *host,
00353 dbus_uint32_t port,
00354 <a class="code" href="structDBusError.html">DBusError</a> *error)
00355 {
00356 <a class="code" href="structDBusServer.html">DBusServer</a> *server;
00357 <font class="keywordtype">int</font> listen_fd;
00358 <a class="code" href="structDBusString.html">DBusString</a> address;
00359
00360 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
00361
00362 <font class="keywordflow">if</font> (!_dbus_string_init (&address))
00363 {
00364 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
00365 <font class="keywordflow">return</font> NULL;
00366 }
00367
00368 <font class="keywordflow">if</font> (host == NULL)
00369 host = <font class="stringliteral">"localhost"</font>;
00370
00371 <font class="keywordflow">if</font> (!_dbus_string_append (&address, <font class="stringliteral">"tcp:host="</font>) ||
00372 !_dbus_string_append (&address, host) ||
00373 !_dbus_string_append (&address, <font class="stringliteral">",port="</font>) ||
00374 !_dbus_string_append_int (&address, port))
00375 {
00376 _dbus_string_free (&address);
00377 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
00378 <font class="keywordflow">return</font> NULL;
00379 }
00380
00381 listen_fd = _dbus_listen_tcp_socket (host, port, error);
00382 _dbus_fd_set_close_on_exec (listen_fd);
00383
00384 <font class="keywordflow">if</font> (listen_fd < 0)
00385 {
00386 _dbus_string_free (&address);
00387 <font class="keywordflow">return</font> NULL;
00388 }
00389
00390 server = _dbus_server_new_for_fd (listen_fd, &address);
00391 <font class="keywordflow">if</font> (server == NULL)
00392 {
00393 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
00394 close (listen_fd);
00395 _dbus_string_free (&address);
00396 <font class="keywordflow">return</font> NULL;
00397 }
00398
00399 _dbus_string_free (&address);
00400
00401 <font class="keywordflow">return</font> server;
00402
00403
00404 }
00405
</pre></div><hr><address align="right"><small>Generated on Wed Jun 9 05:01:26 2004 for D-BUS by
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