1 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
2 /* dbus-server-unix.c Server implementation for Unix network protocols.
4 * Copyright (C) 2002, 2003, 2004 Red Hat Inc.
6 * Licensed under the Academic Free License version 2.1
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 #include "dbus-internals.h"
26 #include "dbus-server-unix.h"
27 #include "dbus-server-socket.h"
28 #include "dbus-transport-unix.h"
29 #include "dbus-connection-internal.h"
30 #include "dbus-sysdeps-unix.h"
31 #include "dbus-string.h"
34 * @defgroup DBusServerUnix DBusServer implementations for UNIX
35 * @ingroup DBusInternals
36 * @brief Implementation details of DBusServer on UNIX
42 * Tries to interpret the address entry in a platform-specific
43 * way, creating a platform-specific server type if appropriate.
44 * Sets error if the result is not OK.
46 * @param entry an address entry
47 * @param server_p location to store a new DBusServer, or #NULL on failure.
48 * @param error location to store rationale for failure on bad address
49 * @returns the outcome
52 DBusServerListenResult
53 _dbus_server_listen_platform_specific (DBusAddressEntry *entry,
54 DBusServer **server_p,
61 method = dbus_address_entry_get_method (entry);
63 if (strcmp (method, "unix") == 0)
65 const char *path = dbus_address_entry_get_value (entry, "path");
66 const char *tmpdir = dbus_address_entry_get_value (entry, "tmpdir");
67 const char *abstract = dbus_address_entry_get_value (entry, "abstract");
69 if (path == NULL && tmpdir == NULL && abstract == NULL)
71 _dbus_set_bad_address(error, "unix",
72 "path or tmpdir or abstract",
74 return DBUS_SERVER_LISTEN_BAD_ADDRESS;
77 if ((path && tmpdir) ||
81 _dbus_set_bad_address(error, NULL, NULL,
82 "cannot specify two of \"path\" and \"tmpdir\" and \"abstract\" at the same time");
83 return DBUS_SERVER_LISTEN_BAD_ADDRESS;
91 if (!_dbus_string_init (&full_path))
93 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
94 return DBUS_SERVER_LISTEN_DID_NOT_CONNECT;
97 if (!_dbus_string_init (&filename))
99 _dbus_string_free (&full_path);
100 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
101 return DBUS_SERVER_LISTEN_DID_NOT_CONNECT;
104 if (!_dbus_string_append (&filename,
106 !_dbus_generate_random_ascii (&filename, 10) ||
107 !_dbus_string_append (&full_path, tmpdir) ||
108 !_dbus_concat_dir_and_file (&full_path, &filename))
110 _dbus_string_free (&full_path);
111 _dbus_string_free (&filename);
112 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
113 return DBUS_SERVER_LISTEN_DID_NOT_CONNECT;
116 /* Always use abstract namespace if possible with tmpdir */
119 _dbus_server_new_for_domain_socket (_dbus_string_get_const_data (&full_path),
120 #ifdef HAVE_ABSTRACT_SOCKETS
127 _dbus_string_free (&full_path);
128 _dbus_string_free (&filename);
133 *server_p = _dbus_server_new_for_domain_socket (path, FALSE, error);
135 *server_p = _dbus_server_new_for_domain_socket (abstract, TRUE, error);
138 if (*server_p != NULL)
140 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
141 return DBUS_SERVER_LISTEN_OK;
145 _DBUS_ASSERT_ERROR_IS_SET(error);
146 return DBUS_SERVER_LISTEN_DID_NOT_CONNECT;
149 else if (strcmp (method, "systemd") == 0)
154 n = _dbus_listen_systemd_sockets (&fds, error);
157 _DBUS_ASSERT_ERROR_IS_SET (error);
158 return DBUS_SERVER_LISTEN_DID_NOT_CONNECT;
161 _dbus_string_init_const (&address, "systemd:");
163 *server_p = _dbus_server_new_for_socket (fds, n, &address, NULL);
164 if (*server_p == NULL)
168 for (i = 0; i < n; i++)
170 _dbus_close_socket (fds[i], NULL);
174 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
175 return DBUS_SERVER_LISTEN_DID_NOT_CONNECT;
180 return DBUS_SERVER_LISTEN_OK;
184 /* If we don't handle the method, we return NULL with the
187 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
188 return DBUS_SERVER_LISTEN_NOT_HANDLED;
193 * Creates a new server listening on the given Unix domain socket.
195 * @param path the path for the domain socket.
196 * @param abstract #TRUE to use abstract socket namespace
197 * @param error location to store reason for failure.
198 * @returns the new server, or #NULL on failure.
201 _dbus_server_new_for_domain_socket (const char *path,
202 dbus_bool_t abstract,
211 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
213 if (!_dbus_string_init (&address))
215 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
219 _dbus_string_init_const (&path_str, path);
221 !_dbus_string_append (&address, "unix:abstract=")) ||
223 !_dbus_string_append (&address, "unix:path=")) ||
224 !_dbus_address_append_escaped (&address, &path_str))
226 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
230 path_copy = _dbus_strdup (path);
231 if (path_copy == NULL)
233 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
237 listen_fd = _dbus_listen_unix_socket (path, abstract, error);
241 _DBUS_ASSERT_ERROR_IS_SET (error);
245 server = _dbus_server_new_for_socket (&listen_fd, 1, &address, 0);
248 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
252 _dbus_server_socket_own_filename(server, path_copy);
254 _dbus_string_free (&address);
259 _dbus_close_socket (listen_fd, NULL);
261 dbus_free (path_copy);
263 _dbus_string_free (&address);