D-Bus: dbus-server-unix.c Source File

D-Bus 1.16.2

dbus-server-unix.c
1/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
2/* dbus-server-unix.c Server implementation for Unix network protocols.
3 *
4 * Copyright (C) 2002, 2003, 2004 Red Hat Inc.
5 *
6 * SPDX-License-Identifier: AFL-2.1 OR GPL-2.0-or-later
7 *
8 * Licensed under the Academic Free License version 2.1
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 *
24 */
25
26#include <config.h>
27#include "dbus-internals.h"
28#include "dbus-server-socket.h"
29#include "dbus-server-launchd.h"
30#include "dbus-transport-unix.h"
31#include "dbus-connection-internal.h"
32#include "dbus-sysdeps-unix.h"
33#include "dbus-string.h"
34
42
54DBusServerListenResult
55_dbus_server_listen_platform_specific (DBusAddressEntry *entry,
56 DBusServer **server_p,
57 DBusError *error)
58{
59 const char *method;
60
61 *server_p = NULL;
62
63 method = dbus_address_entry_get_method (entry);
64 if (strcmp (method, "systemd") == 0)
65 {
66 int i, n;
67 DBusSocket *fds;
68 DBusString address;
69
70 n = _dbus_listen_systemd_sockets (&fds, error);
71 if (n < 0)
72 {
73 _DBUS_ASSERT_ERROR_IS_SET (error);
74 return DBUS_SERVER_LISTEN_DID_NOT_CONNECT;
75 }
76
77 if (!_dbus_string_init (&address))
78 goto systemd_oom;
79
80 for (i = 0; i < n; i++)
81 {
82 if (i > 0)
83 {
84 if (!_dbus_string_append (&address, ";"))
85 goto systemd_oom;
86 }
87 if (!_dbus_append_address_from_socket (fds[i], &address, error))
88 goto systemd_err;
89 }
90
91 *server_p = _dbus_server_new_for_socket (fds, n, &address, NULL, error);
92 if (*server_p == NULL)
93 goto systemd_err;
94
95 dbus_free (fds);
96 _dbus_string_free (&address);
97
98 return DBUS_SERVER_LISTEN_OK;
99
100 systemd_oom:
101 _DBUS_SET_OOM (error);
102 systemd_err:
103 for (i = 0; i < n; i++)
104 {
105 _dbus_close_socket (&fds[i], NULL);
106 }
107 dbus_free (fds);
108 _dbus_string_free (&address);
109
110 return DBUS_SERVER_LISTEN_DID_NOT_CONNECT;
111 }
112#ifdef DBUS_ENABLE_LAUNCHD
113 else if (strcmp (method, "launchd") == 0)
114 {
115 const char *launchd_env_var = dbus_address_entry_get_value (entry, "env");
116 if (launchd_env_var == NULL)
117 {
118 _dbus_set_bad_address (error, "launchd", "env", NULL);
119 return DBUS_SERVER_LISTEN_DID_NOT_CONNECT;
120 }
121 *server_p = _dbus_server_new_for_launchd (launchd_env_var, error);
122
123 if (*server_p != NULL)
124 {
125 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
126 return DBUS_SERVER_LISTEN_OK;
127 }
128 else
129 {
130 _DBUS_ASSERT_ERROR_IS_SET(error);
131 return DBUS_SERVER_LISTEN_DID_NOT_CONNECT;
132 }
133 }
134#endif
135 else
136 {
137 /* If we don't handle the method, we return NULL with the
138 * error unset
139 */
140 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
141 return DBUS_SERVER_LISTEN_NOT_HANDLED;
142 }
143}
144
_dbus_set_bad_address
void _dbus_set_bad_address(DBusError *error, const char *address_problem_type, const char *address_problem_field, const char *address_problem_other)
Sets DBUS_ERROR_BAD_ADDRESS.
Definition dbus-address.c:70
dbus_address_entry_get_method
const char * dbus_address_entry_get_method(DBusAddressEntry *entry)
Returns the method string of an address entry.
Definition dbus-address.c:232
dbus_address_entry_get_value
const char * dbus_address_entry_get_value(DBusAddressEntry *entry, const char *key)
Returns a value from a key of an entry.
Definition dbus-address.c:249
NULL
#define NULL
A null pointer, defined appropriately for C or C++.
Definition dbus-macros.h:51
dbus_free
void dbus_free(void *memory)
Frees a block of memory previously allocated by dbus_malloc() or dbus_malloc0().
Definition dbus-memory.c:710
_dbus_server_new_for_launchd
DBusServer * _dbus_server_new_for_launchd(const char *launchd_env_var, DBusError *error)
Creates a new server from launchd.
Definition dbus-server-launchd.c:68
_dbus_server_new_for_socket
DBusServer * _dbus_server_new_for_socket(DBusSocket *fds, int n_fds, const DBusString *address, DBusNonceFile *noncefile, DBusError *error)
Creates a new server listening on the given file descriptor.
Definition dbus-server-socket.c:288
_dbus_server_listen_platform_specific
DBusServerListenResult _dbus_server_listen_platform_specific(DBusAddressEntry *entry, DBusServer **server_p, DBusError *error)
Tries to interpret the address entry in a platform-specific way, creating a platform-specific server ...
Definition dbus-server-unix.c:55
_dbus_string_append
dbus_bool_t _dbus_string_append(DBusString *str, const char *buffer)
Appends a nul-terminated C-style string to a DBusString.
Definition dbus-string.c:980
_dbus_string_init
dbus_bool_t _dbus_string_init(DBusString *str)
Initializes a string.
Definition dbus-string.c:182
_dbus_string_free
void _dbus_string_free(DBusString *str)
Frees a string created by _dbus_string_init(), and fills it with the same contents as _DBUS_STRING_IN...
Definition dbus-string.c:278
_dbus_listen_systemd_sockets
int _dbus_listen_systemd_sockets(DBusSocket **fds, DBusError *error)
Acquires one or more sockets passed in from systemd.
Definition dbus-sysdeps-unix.c:1299
_dbus_append_address_from_socket
dbus_bool_t _dbus_append_address_from_socket(DBusSocket fd, DBusString *address, DBusError *error)
Read the address from the socket and append it to the string.
Definition dbus-sysdeps-unix.c:5055
_dbus_close_socket
dbus_bool_t _dbus_close_socket(DBusSocket *fd, DBusError *error)
Closes a socket and invalidates it.
Definition dbus-sysdeps-unix.c:314
DBusAddressEntry
Internals of DBusAddressEntry.
Definition dbus-address.c:49
DBusError
Object representing an exception.
Definition dbus-errors.h:51
DBusServer
Internals of DBusServer object.
Definition dbus-server-protected.h:59
DBusSocket
Socket interface.
Definition dbus-sysdeps.h:185
DBusString
Definition dbus-string.h:47