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aab6d9ed1c
Also add a 'address' G_DBUS_DEBUG option that will print out useful
debug information such as
GDBus-debug:Address: In g_dbus_address_get_for_bus_sync() for bus type `session'
GDBus-debug:Address: env var DBUS_SESSION_BUS_ADDRESS is not set
GDBus-debug:Address: env var DBUS_SYSTEM_BUS_ADDRESS is not set
GDBus-debug:Address: env var DBUS_STARTER_BUS_TYPE is not set
GDBus-debug:Address: Running `dbus-launch --autolaunch=05e508961149264c9b750a4c494aa6f7 --binary-syntax --close-stderr' to get bus address (possibly autolaunching)
GDBus-debug:Address: dbus-launch output:
0000: 75 6e 69 78 3a 61 62 73 74 72 61 63 74 3d 2f 74 unix:abstract=/t
0010: 6d 70 2f 64 62 75 73 2d 77 42 41 6f 4b 59 49 52 mp/dbus-wBAoKYIR
0020: 7a 75 2c 67 75 69 64 3d 30 34 30 64 31 33 66 33 zu,guid=040d13f3
0030: 30 61 30 62 35 32 63 32 30 66 36 32 63 34 31 63 0a0b52c20f62c41c
0040: 30 30 30 30 35 30 38 64 00 d2 38 00 00 01 00 40 0000508d..8....@
0050: 05 00 00 00 00 .....
GDBus-debug:Address: dbus-launch stderr output:
14542: Autolaunch enabled (using X11).
14542: --exit-with-session automatically enabled
14542: Connected to X11 display ':0.0'
14542: === Parent dbus-launch continues
14542: Waiting for babysitter's intermediate parent
14542: Reading address from bus
14542: Reading PID from daemon
14542: Saving x11 address
14542: Created window 88080385
14542: session file: /root/.dbus/session-bus/05e508961149264c9b750a4c494aa6f7-0
14542: dbus-launch exiting
GDBus-debug:Address: Returning address `unix:abstract=/tmp/dbus-wBAoKYIRzu,guid=040d13f30a0b52c20f62c41c0000508d' for bus type `session'
and
GDBus-debug:Address: In g_dbus_address_get_for_bus_sync() for bus type `session'
GDBus-debug:Address: env var DBUS_SESSION_BUS_ADDRESS is not set
GDBus-debug:Address: env var DBUS_SYSTEM_BUS_ADDRESS is not set
GDBus-debug:Address: env var DBUS_STARTER_BUS_TYPE is not set
GDBus-debug:Address: Running `dbus-launch --autolaunch=05e508961149264c9b750a4c494aa6f7 --binary-syntax --close-stderr' to get bus address (possibly autolaunching)
GDBus-debug:Address: dbus-launch output:
0000: 75 6e 69 78 3a 61 62 73 74 72 61 63 74 3d 2f 74 unix:abstract=/t
0010: 6d 70 2f 64 62 75 73 2d 77 42 41 6f 4b 59 49 52 mp/dbus-wBAoKYIR
0020: 7a 75 2c 67 75 69 64 3d 30 34 30 64 31 33 66 33 zu,guid=040d13f3
0030: 30 61 30 62 35 32 63 32 30 66 36 32 63 34 31 63 0a0b52c20f62c41c
0040: 30 30 30 30 35 30 38 64 00 d2 38 00 00 01 00 40 0000508d..8....@
0050: 05 00 00 00 00 .....
GDBus-debug:Address: dbus-launch stderr output:
14549: Autolaunch enabled (using X11).
14549: --exit-with-session automatically enabled
14549: Connected to X11 display ':0.0'
14549: dbus-daemon is already running. Returning existing parameters.
14549: dbus-launch exiting
GDBus-debug:Address: Returning address `unix:abstract=/tmp/dbus-wBAoKYIRzu,guid=040d13f30a0b52c20f62c41c0000508d' for bus type `session'
Note that things work exactly like libdbus, e.g. from the
dbus-launch(1) man page:
Whenever an autolaunch occurs, the application that had to start a
new bus will be in its own little world; it can effectively end up
starting a whole new session if it tries to use a lot of bus
services. This can be suboptimal or even totally broken, depending
on the app and what it tries to do.
[...]
You can always avoid autolaunch by manually setting
DBUS_SESSION_BUS_ADDRESS. Autolaunch happens because the default
address if none is set is "autolaunch:", so if any other address is
set there will be no autolaunch. You can however include autolaunch
in an explicit session bus address as a fallback, for example
DBUS_SESSION_BUS_ADDRESS="something:,autolaunch:" - in that case if
the first address doesn't work, processes will autolaunch. (The bus
address variable contains a comma-separated list of addresses to
try.)
Signed-off-by: David Zeuthen <davidz@redhat.com>
1268 lines
37 KiB
C
1268 lines
37 KiB
C
/* GDBus - GLib D-Bus Library
|
||
*
|
||
* Copyright (C) 2008-2010 Red Hat, Inc.
|
||
*
|
||
* This library is free software; you can redistribute it and/or
|
||
* modify it under the terms of the GNU Lesser General Public
|
||
* License as published by the Free Software Foundation; either
|
||
* version 2 of the License, or (at your option) any later version.
|
||
*
|
||
* This library is distributed in the hope that it will be useful,
|
||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
* Lesser General Public License for more details.
|
||
*
|
||
* You should have received a copy of the GNU Lesser General
|
||
* Public License along with this library; if not, write to the
|
||
* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
|
||
* Boston, MA 02111-1307, USA.
|
||
*
|
||
* Author: David Zeuthen <davidz@redhat.com>
|
||
*/
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||
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#include "config.h"
|
||
|
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#include <stdlib.h>
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||
#include <string.h>
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#include "gioerror.h"
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#include "gdbusutils.h"
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#include "gdbusaddress.h"
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#include "gdbuserror.h"
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#include "gioenumtypes.h"
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#include "gnetworkaddress.h"
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||
#include "gsocketclient.h"
|
||
#include "giostream.h"
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#include "gasyncresult.h"
|
||
#include "gsimpleasyncresult.h"
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#include "gdbusprivate.h"
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#ifdef G_OS_UNIX
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#include <gio/gunixsocketaddress.h>
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#endif
|
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#include "glibintl.h"
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#include "gioalias.h"
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|
||
/**
|
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* SECTION:gdbusaddress
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* @title: D-Bus Addresses
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* @short_description: D-Bus connection endpoints
|
||
* @include: gio/gio.h
|
||
*
|
||
* Routines for working with D-Bus addresses. A D-Bus address is a string
|
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* like "unix:tmpdir=/tmp/my-app-name". The exact format of addresses
|
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* is explained in detail in the <link linkend="http://dbus.freedesktop.org/doc/dbus-specification.html#addresses">D-Bus specification</link>.
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||
*/
|
||
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static gchar *get_session_address_platform_specific (GError **error);
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||
|
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/* ---------------------------------------------------------------------------------------------------- */
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||
|
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/**
|
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* g_dbus_is_address:
|
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* @string: A string.
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*
|
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* Checks if @string is a D-Bus address.
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||
*
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||
* This doesn't check if @string is actually supported by #GDBusServer
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* or #GDBusConnection - use g_dbus_is_supported_address() to do more
|
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* checks.
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*
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* Returns: %TRUE if @string is a valid D-Bus address, %FALSE otherwise.
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*
|
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* Since: 2.26
|
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*/
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gboolean
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g_dbus_is_address (const gchar *string)
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{
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guint n;
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gchar **a;
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gboolean ret;
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ret = FALSE;
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g_return_val_if_fail (string != NULL, FALSE);
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a = g_strsplit (string, ";", 0);
|
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if (a[0] == NULL)
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goto out;
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||
|
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for (n = 0; a[n] != NULL; n++)
|
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{
|
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if (!_g_dbus_address_parse_entry (a[n],
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NULL,
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||
NULL,
|
||
NULL))
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goto out;
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||
}
|
||
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||
ret = TRUE;
|
||
|
||
out:
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g_strfreev (a);
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||
return ret;
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||
}
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static gboolean
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||
is_valid_unix (const gchar *address_entry,
|
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GHashTable *key_value_pairs,
|
||
GError **error)
|
||
{
|
||
gboolean ret;
|
||
GList *keys;
|
||
GList *l;
|
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const gchar *path;
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const gchar *tmpdir;
|
||
const gchar *abstract;
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||
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ret = FALSE;
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keys = NULL;
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||
path = NULL;
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tmpdir = NULL;
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abstract = NULL;
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keys = g_hash_table_get_keys (key_value_pairs);
|
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for (l = keys; l != NULL; l = l->next)
|
||
{
|
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const gchar *key = l->data;
|
||
if (g_strcmp0 (key, "path") == 0)
|
||
path = g_hash_table_lookup (key_value_pairs, key);
|
||
else if (g_strcmp0 (key, "tmpdir") == 0)
|
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tmpdir = g_hash_table_lookup (key_value_pairs, key);
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else if (g_strcmp0 (key, "abstract") == 0)
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abstract = g_hash_table_lookup (key_value_pairs, key);
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else
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{
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g_set_error (error,
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G_IO_ERROR,
|
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G_IO_ERROR_INVALID_ARGUMENT,
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_("Unsupported key `%s' in address entry `%s'"),
|
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key,
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address_entry);
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goto out;
|
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}
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}
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if (path != NULL)
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{
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if (tmpdir != NULL || abstract != NULL)
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goto meaningless;
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/* TODO: validate path */
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}
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else if (tmpdir != NULL)
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{
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if (path != NULL || abstract != NULL)
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goto meaningless;
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/* TODO: validate tmpdir */
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}
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else if (abstract != NULL)
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{
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if (path != NULL || tmpdir != NULL)
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goto meaningless;
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/* TODO: validate abstract */
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}
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else
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{
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g_set_error (error,
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G_IO_ERROR,
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G_IO_ERROR_INVALID_ARGUMENT,
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_("Address `%s' is invalid (need exactly one of path, tmpdir or abstract keys)"),
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address_entry);
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goto out;
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}
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ret= TRUE;
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goto out;
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meaningless:
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g_set_error (error,
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G_IO_ERROR,
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G_IO_ERROR_INVALID_ARGUMENT,
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_("Meaningless key/value pair combination in address entry `%s'"),
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address_entry);
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out:
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g_list_free (keys);
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return ret;
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}
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static gboolean
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is_valid_nonce_tcp (const gchar *address_entry,
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GHashTable *key_value_pairs,
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GError **error)
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{
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gboolean ret;
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GList *keys;
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GList *l;
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const gchar *host;
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const gchar *port;
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const gchar *family;
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const gchar *nonce_file;
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gint port_num;
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gchar *endp;
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ret = FALSE;
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keys = NULL;
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host = NULL;
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port = NULL;
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family = NULL;
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nonce_file = NULL;
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keys = g_hash_table_get_keys (key_value_pairs);
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for (l = keys; l != NULL; l = l->next)
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{
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const gchar *key = l->data;
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if (g_strcmp0 (key, "host") == 0)
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host = g_hash_table_lookup (key_value_pairs, key);
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else if (g_strcmp0 (key, "port") == 0)
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port = g_hash_table_lookup (key_value_pairs, key);
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else if (g_strcmp0 (key, "family") == 0)
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family = g_hash_table_lookup (key_value_pairs, key);
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else if (g_strcmp0 (key, "noncefile") == 0)
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nonce_file = g_hash_table_lookup (key_value_pairs, key);
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else
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{
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g_set_error (error,
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G_IO_ERROR,
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G_IO_ERROR_INVALID_ARGUMENT,
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_("Unsupported key `%s' in address entry `%s'"),
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key,
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address_entry);
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goto out;
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}
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}
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if (port != NULL)
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{
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port_num = strtol (port, &endp, 10);
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if ((*port == '\0' || *endp != '\0') || port_num < 0 || port_num >= 65536)
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{
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g_set_error (error,
|
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G_IO_ERROR,
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G_IO_ERROR_INVALID_ARGUMENT,
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_("Error in address `%s' - the port attribute is malformed"),
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address_entry);
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goto out;
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}
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}
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if (family != NULL && !(g_strcmp0 (family, "ipv4") == 0 || g_strcmp0 (family, "ipv6") == 0))
|
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{
|
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g_set_error (error,
|
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G_IO_ERROR,
|
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G_IO_ERROR_INVALID_ARGUMENT,
|
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_("Error in address `%s' - the family attribute is malformed"),
|
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address_entry);
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goto out;
|
||
}
|
||
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||
ret= TRUE;
|
||
|
||
out:
|
||
g_list_free (keys);
|
||
|
||
return ret;
|
||
}
|
||
|
||
static gboolean
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is_valid_tcp (const gchar *address_entry,
|
||
GHashTable *key_value_pairs,
|
||
GError **error)
|
||
{
|
||
gboolean ret;
|
||
GList *keys;
|
||
GList *l;
|
||
const gchar *host;
|
||
const gchar *port;
|
||
const gchar *family;
|
||
gint port_num;
|
||
gchar *endp;
|
||
|
||
ret = FALSE;
|
||
keys = NULL;
|
||
host = NULL;
|
||
port = NULL;
|
||
family = NULL;
|
||
|
||
keys = g_hash_table_get_keys (key_value_pairs);
|
||
for (l = keys; l != NULL; l = l->next)
|
||
{
|
||
const gchar *key = l->data;
|
||
if (g_strcmp0 (key, "host") == 0)
|
||
host = g_hash_table_lookup (key_value_pairs, key);
|
||
else if (g_strcmp0 (key, "port") == 0)
|
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port = g_hash_table_lookup (key_value_pairs, key);
|
||
else if (g_strcmp0 (key, "family") == 0)
|
||
family = g_hash_table_lookup (key_value_pairs, key);
|
||
else
|
||
{
|
||
g_set_error (error,
|
||
G_IO_ERROR,
|
||
G_IO_ERROR_INVALID_ARGUMENT,
|
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_("Unsupported key `%s' in address entry `%s'"),
|
||
key,
|
||
address_entry);
|
||
goto out;
|
||
}
|
||
}
|
||
|
||
if (port != NULL)
|
||
{
|
||
port_num = strtol (port, &endp, 10);
|
||
if ((*port == '\0' || *endp != '\0') || port_num < 0 || port_num >= 65536)
|
||
{
|
||
g_set_error (error,
|
||
G_IO_ERROR,
|
||
G_IO_ERROR_INVALID_ARGUMENT,
|
||
_("Error in address `%s' - the port attribute is malformed"),
|
||
address_entry);
|
||
goto out;
|
||
}
|
||
}
|
||
|
||
if (family != NULL && !(g_strcmp0 (family, "ipv4") == 0 || g_strcmp0 (family, "ipv6") == 0))
|
||
{
|
||
g_set_error (error,
|
||
G_IO_ERROR,
|
||
G_IO_ERROR_INVALID_ARGUMENT,
|
||
_("Error in address `%s' - the family attribute is malformed"),
|
||
address_entry);
|
||
goto out;
|
||
}
|
||
|
||
ret= TRUE;
|
||
|
||
out:
|
||
g_list_free (keys);
|
||
|
||
return ret;
|
||
}
|
||
|
||
/**
|
||
* g_dbus_is_supported_address:
|
||
* @string: A string.
|
||
* @error: Return location for error or %NULL.
|
||
*
|
||
* Like g_dbus_is_address() but also checks if the library suppors the
|
||
* transports in @string and that key/value pairs for each transport
|
||
* are valid.
|
||
*
|
||
* Returns: %TRUE if @string is a valid D-Bus address that is
|
||
* supported by this library, %FALSE if @error is set.
|
||
*
|
||
* Since: 2.26
|
||
*/
|
||
gboolean
|
||
g_dbus_is_supported_address (const gchar *string,
|
||
GError **error)
|
||
{
|
||
guint n;
|
||
gchar **a;
|
||
gboolean ret;
|
||
|
||
ret = FALSE;
|
||
|
||
g_return_val_if_fail (string != NULL, FALSE);
|
||
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
|
||
|
||
a = g_strsplit (string, ";", 0);
|
||
for (n = 0; a[n] != NULL; n++)
|
||
{
|
||
gchar *transport_name;
|
||
GHashTable *key_value_pairs;
|
||
gboolean supported;
|
||
|
||
if (!_g_dbus_address_parse_entry (a[n],
|
||
&transport_name,
|
||
&key_value_pairs,
|
||
error))
|
||
goto out;
|
||
|
||
supported = FALSE;
|
||
if (g_strcmp0 (transport_name, "unix") == 0)
|
||
supported = is_valid_unix (a[n], key_value_pairs, error);
|
||
else if (g_strcmp0 (transport_name, "tcp") == 0)
|
||
supported = is_valid_tcp (a[n], key_value_pairs, error);
|
||
else if (g_strcmp0 (transport_name, "nonce-tcp") == 0)
|
||
supported = is_valid_nonce_tcp (a[n], key_value_pairs, error);
|
||
else if (g_strcmp0 (a[n], "autolaunch:") == 0)
|
||
supported = TRUE;
|
||
|
||
g_free (transport_name);
|
||
g_hash_table_unref (key_value_pairs);
|
||
|
||
if (!supported)
|
||
goto out;
|
||
}
|
||
|
||
ret = TRUE;
|
||
|
||
out:
|
||
g_strfreev (a);
|
||
|
||
g_assert (ret || (!ret && (error == NULL || *error != NULL)));
|
||
|
||
return ret;
|
||
}
|
||
|
||
gboolean
|
||
_g_dbus_address_parse_entry (const gchar *address_entry,
|
||
gchar **out_transport_name,
|
||
GHashTable **out_key_value_pairs,
|
||
GError **error)
|
||
{
|
||
gboolean ret;
|
||
GHashTable *key_value_pairs;
|
||
gchar *transport_name;
|
||
gchar **kv_pairs;
|
||
const gchar *s;
|
||
guint n;
|
||
|
||
ret = FALSE;
|
||
kv_pairs = NULL;
|
||
transport_name = NULL;
|
||
key_value_pairs = NULL;
|
||
|
||
s = strchr (address_entry, ':');
|
||
if (s == NULL)
|
||
{
|
||
g_set_error (error,
|
||
G_IO_ERROR,
|
||
G_IO_ERROR_INVALID_ARGUMENT,
|
||
_("Address element `%s', does not contain a colon (:)"),
|
||
address_entry);
|
||
goto out;
|
||
}
|
||
|
||
transport_name = g_strndup (address_entry, s - address_entry);
|
||
key_value_pairs = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
|
||
|
||
kv_pairs = g_strsplit (s + 1, ",", 0);
|
||
for (n = 0; kv_pairs != NULL && kv_pairs[n] != NULL; n++)
|
||
{
|
||
const gchar *kv_pair = kv_pairs[n];
|
||
gchar *key;
|
||
gchar *value;
|
||
|
||
s = strchr (kv_pair, '=');
|
||
if (s == NULL)
|
||
{
|
||
g_set_error (error,
|
||
G_IO_ERROR,
|
||
G_IO_ERROR_INVALID_ARGUMENT,
|
||
_("Key/Value pair %d, `%s', in address element `%s', does not contain an equal sign"),
|
||
n,
|
||
kv_pair,
|
||
address_entry);
|
||
goto out;
|
||
}
|
||
|
||
/* TODO: actually validate that no illegal characters are present before and after then '=' sign */
|
||
key = g_uri_unescape_segment (kv_pair, s, NULL);
|
||
value = g_uri_unescape_segment (s + 1, kv_pair + strlen (kv_pair), NULL);
|
||
g_hash_table_insert (key_value_pairs, key, value);
|
||
}
|
||
|
||
ret = TRUE;
|
||
|
||
out:
|
||
g_strfreev (kv_pairs);
|
||
if (ret)
|
||
{
|
||
if (out_transport_name != NULL)
|
||
*out_transport_name = transport_name;
|
||
else
|
||
g_free (transport_name);
|
||
if (out_key_value_pairs != NULL)
|
||
*out_key_value_pairs = key_value_pairs;
|
||
else if (key_value_pairs != NULL)
|
||
g_hash_table_unref (key_value_pairs);
|
||
}
|
||
else
|
||
{
|
||
g_free (transport_name);
|
||
if (key_value_pairs != NULL)
|
||
g_hash_table_unref (key_value_pairs);
|
||
}
|
||
return ret;
|
||
}
|
||
|
||
/* ---------------------------------------------------------------------------------------------------- */
|
||
|
||
static GIOStream *
|
||
g_dbus_address_try_connect_one (const gchar *address_entry,
|
||
gchar **out_guid,
|
||
GCancellable *cancellable,
|
||
GError **error);
|
||
|
||
/* TODO: Declare an extension point called GDBusTransport (or similar)
|
||
* and move code below to extensions implementing said extension
|
||
* point. That way we can implement a D-Bus transport over X11 without
|
||
* making libgio link to libX11...
|
||
*/
|
||
static GIOStream *
|
||
g_dbus_address_connect (const gchar *address_entry,
|
||
const gchar *transport_name,
|
||
GHashTable *key_value_pairs,
|
||
GCancellable *cancellable,
|
||
GError **error)
|
||
{
|
||
GIOStream *ret;
|
||
GSocketConnectable *connectable;
|
||
const gchar *nonce_file;
|
||
|
||
connectable = NULL;
|
||
ret = NULL;
|
||
nonce_file = NULL;
|
||
|
||
if (FALSE)
|
||
{
|
||
}
|
||
#ifdef G_OS_UNIX
|
||
else if (g_strcmp0 (transport_name, "unix") == 0)
|
||
{
|
||
const gchar *path;
|
||
const gchar *abstract;
|
||
path = g_hash_table_lookup (key_value_pairs, "path");
|
||
abstract = g_hash_table_lookup (key_value_pairs, "abstract");
|
||
if ((path == NULL && abstract == NULL) || (path != NULL && abstract != NULL))
|
||
{
|
||
g_set_error (error,
|
||
G_IO_ERROR,
|
||
G_IO_ERROR_INVALID_ARGUMENT,
|
||
_("Error in address `%s' - the unix transport requires exactly one of the "
|
||
"keys `path' or `abstract' to be set"),
|
||
address_entry);
|
||
}
|
||
else if (path != NULL)
|
||
{
|
||
connectable = G_SOCKET_CONNECTABLE (g_unix_socket_address_new (path));
|
||
}
|
||
else if (abstract != NULL)
|
||
{
|
||
connectable = G_SOCKET_CONNECTABLE (g_unix_socket_address_new_with_type (abstract,
|
||
-1,
|
||
G_UNIX_SOCKET_ADDRESS_ABSTRACT));
|
||
}
|
||
else
|
||
{
|
||
g_assert_not_reached ();
|
||
}
|
||
}
|
||
#endif
|
||
else if (g_strcmp0 (transport_name, "tcp") == 0 || g_strcmp0 (transport_name, "nonce-tcp") == 0)
|
||
{
|
||
const gchar *s;
|
||
const gchar *host;
|
||
guint port;
|
||
gchar *endp;
|
||
gboolean is_nonce;
|
||
|
||
is_nonce = (g_strcmp0 (transport_name, "nonce-tcp") == 0);
|
||
|
||
host = g_hash_table_lookup (key_value_pairs, "host");
|
||
if (host == NULL)
|
||
{
|
||
g_set_error (error,
|
||
G_IO_ERROR,
|
||
G_IO_ERROR_INVALID_ARGUMENT,
|
||
_("Error in address `%s' - the host attribute is missing or malformed"),
|
||
address_entry);
|
||
goto out;
|
||
}
|
||
|
||
s = g_hash_table_lookup (key_value_pairs, "port");
|
||
if (s == NULL)
|
||
s = "0";
|
||
port = strtol (s, &endp, 10);
|
||
if ((*s == '\0' || *endp != '\0') || port < 0 || port >= 65536)
|
||
{
|
||
g_set_error (error,
|
||
G_IO_ERROR,
|
||
G_IO_ERROR_INVALID_ARGUMENT,
|
||
_("Error in address `%s' - the port attribute is missing or malformed"),
|
||
address_entry);
|
||
goto out;
|
||
}
|
||
|
||
|
||
if (is_nonce)
|
||
{
|
||
nonce_file = g_hash_table_lookup (key_value_pairs, "noncefile");
|
||
if (nonce_file == NULL)
|
||
{
|
||
g_set_error (error,
|
||
G_IO_ERROR,
|
||
G_IO_ERROR_INVALID_ARGUMENT,
|
||
_("Error in address `%s' - the noncefile attribute is missing or malformed"),
|
||
address_entry);
|
||
goto out;
|
||
}
|
||
}
|
||
|
||
/* TODO: deal with family */
|
||
connectable = g_network_address_new (host, port);
|
||
}
|
||
else if (g_strcmp0 (address_entry, "autolaunch:") == 0)
|
||
{
|
||
gchar *autolaunch_address;
|
||
autolaunch_address = get_session_address_platform_specific (error);
|
||
if (autolaunch_address != NULL)
|
||
{
|
||
ret = g_dbus_address_try_connect_one (autolaunch_address, NULL, cancellable, error);
|
||
g_free (autolaunch_address);
|
||
goto out;
|
||
}
|
||
else
|
||
{
|
||
g_prefix_error (error, _("Error auto-launching: "));
|
||
}
|
||
}
|
||
else
|
||
{
|
||
g_set_error (error,
|
||
G_IO_ERROR,
|
||
G_IO_ERROR_INVALID_ARGUMENT,
|
||
_("Unknown or unsupported transport `%s' for address `%s'"),
|
||
transport_name,
|
||
address_entry);
|
||
}
|
||
|
||
if (connectable != NULL)
|
||
{
|
||
GSocketClient *client;
|
||
GSocketConnection *connection;
|
||
|
||
g_assert (ret == NULL);
|
||
client = g_socket_client_new ();
|
||
connection = g_socket_client_connect (client,
|
||
connectable,
|
||
cancellable,
|
||
error);
|
||
g_object_unref (connectable);
|
||
g_object_unref (client);
|
||
if (connection == NULL)
|
||
goto out;
|
||
|
||
ret = G_IO_STREAM (connection);
|
||
|
||
if (nonce_file != NULL)
|
||
{
|
||
gchar *nonce_contents;
|
||
gsize nonce_length;
|
||
|
||
/* TODO: too dangerous to read the entire file? (think denial-of-service etc.) */
|
||
if (!g_file_get_contents (nonce_file,
|
||
&nonce_contents,
|
||
&nonce_length,
|
||
error))
|
||
{
|
||
g_prefix_error (error, _("Error reading nonce file `%s':"), nonce_file);
|
||
g_object_unref (ret);
|
||
ret = NULL;
|
||
goto out;
|
||
}
|
||
|
||
if (nonce_length != 16)
|
||
{
|
||
g_set_error (error,
|
||
G_IO_ERROR,
|
||
G_IO_ERROR_INVALID_ARGUMENT,
|
||
_("The nonce-file `%s' was %" G_GSIZE_FORMAT " bytes. Expected 16 bytes."),
|
||
nonce_file,
|
||
nonce_length);
|
||
g_free (nonce_contents);
|
||
g_object_unref (ret);
|
||
ret = NULL;
|
||
goto out;
|
||
}
|
||
|
||
if (!g_output_stream_write_all (g_io_stream_get_output_stream (ret),
|
||
nonce_contents,
|
||
nonce_length,
|
||
NULL,
|
||
cancellable,
|
||
error))
|
||
{
|
||
g_prefix_error (error, _("Error write contents of nonce file `%s' to stream:"), nonce_file);
|
||
g_object_unref (ret);
|
||
ret = NULL;
|
||
g_free (nonce_contents);
|
||
goto out;
|
||
}
|
||
g_free (nonce_contents);
|
||
}
|
||
}
|
||
|
||
out:
|
||
|
||
return ret;
|
||
}
|
||
|
||
static GIOStream *
|
||
g_dbus_address_try_connect_one (const gchar *address_entry,
|
||
gchar **out_guid,
|
||
GCancellable *cancellable,
|
||
GError **error)
|
||
{
|
||
GIOStream *ret;
|
||
GHashTable *key_value_pairs;
|
||
gchar *transport_name;
|
||
const gchar *guid;
|
||
|
||
ret = NULL;
|
||
transport_name = NULL;
|
||
key_value_pairs = NULL;
|
||
|
||
if (!_g_dbus_address_parse_entry (address_entry,
|
||
&transport_name,
|
||
&key_value_pairs,
|
||
error))
|
||
goto out;
|
||
|
||
ret = g_dbus_address_connect (address_entry,
|
||
transport_name,
|
||
key_value_pairs,
|
||
cancellable,
|
||
error);
|
||
if (ret == NULL)
|
||
goto out;
|
||
|
||
/* TODO: validate that guid is of correct format */
|
||
guid = g_hash_table_lookup (key_value_pairs, "guid");
|
||
if (guid != NULL && out_guid != NULL)
|
||
*out_guid = g_strdup (guid);
|
||
|
||
out:
|
||
g_free (transport_name);
|
||
if (key_value_pairs != NULL)
|
||
g_hash_table_unref (key_value_pairs);
|
||
return ret;
|
||
}
|
||
|
||
|
||
/* ---------------------------------------------------------------------------------------------------- */
|
||
|
||
typedef struct {
|
||
gchar *address;
|
||
GIOStream *stream;
|
||
gchar *guid;
|
||
} GetStreamData;
|
||
|
||
static void
|
||
get_stream_data_free (GetStreamData *data)
|
||
{
|
||
g_free (data->address);
|
||
if (data->stream != NULL)
|
||
g_object_unref (data->stream);
|
||
g_free (data->guid);
|
||
g_free (data);
|
||
}
|
||
|
||
static void
|
||
get_stream_thread_func (GSimpleAsyncResult *res,
|
||
GObject *object,
|
||
GCancellable *cancellable)
|
||
{
|
||
GetStreamData *data;
|
||
GError *error;
|
||
|
||
data = g_simple_async_result_get_op_res_gpointer (res);
|
||
|
||
error = NULL;
|
||
data->stream = g_dbus_address_get_stream_sync (data->address,
|
||
&data->guid,
|
||
cancellable,
|
||
&error);
|
||
if (data->stream == NULL)
|
||
{
|
||
g_simple_async_result_set_from_error (res, error);
|
||
g_error_free (error);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* g_dbus_address_get_stream:
|
||
* @address: A valid D-Bus address.
|
||
* @cancellable: A #GCancellable or %NULL.
|
||
* @callback: A #GAsyncReadyCallback to call when the request is satisfied.
|
||
* @user_data: Data to pass to @callback.
|
||
*
|
||
* Asynchronously connects to an endpoint specified by @address and
|
||
* sets up the connection so it is in a state to run the client-side
|
||
* of the D-Bus authentication conversation.
|
||
*
|
||
* When the operation is finished, @callback will be invoked. You can
|
||
* then call g_dbus_address_get_stream_finish() to get the result of
|
||
* the operation.
|
||
*
|
||
* This is an asynchronous failable function. See
|
||
* g_dbus_address_get_stream_sync() for the synchronous version.
|
||
*
|
||
* Since: 2.26
|
||
*/
|
||
void
|
||
g_dbus_address_get_stream (const gchar *address,
|
||
GCancellable *cancellable,
|
||
GAsyncReadyCallback callback,
|
||
gpointer user_data)
|
||
{
|
||
GSimpleAsyncResult *res;
|
||
GetStreamData *data;
|
||
|
||
g_return_if_fail (address != NULL);
|
||
|
||
res = g_simple_async_result_new (NULL,
|
||
callback,
|
||
user_data,
|
||
g_dbus_address_get_stream);
|
||
data = g_new0 (GetStreamData, 1);
|
||
data->address = g_strdup (address);
|
||
g_simple_async_result_set_op_res_gpointer (res,
|
||
data,
|
||
(GDestroyNotify) get_stream_data_free);
|
||
g_simple_async_result_run_in_thread (res,
|
||
get_stream_thread_func,
|
||
G_PRIORITY_DEFAULT,
|
||
cancellable);
|
||
g_object_unref (res);
|
||
}
|
||
|
||
/**
|
||
* g_dbus_address_get_stream_finish:
|
||
* @res: A #GAsyncResult obtained from the GAsyncReadyCallback passed to g_dbus_address_get_stream().
|
||
* @out_guid: %NULL or return location to store the GUID extracted from @address, if any.
|
||
* @error: Return location for error or %NULL.
|
||
*
|
||
* Finishes an operation started with g_dbus_address_get_stream().
|
||
*
|
||
* Returns: A #GIOStream or %NULL if @error is set.
|
||
*
|
||
* Since: 2.26
|
||
*/
|
||
GIOStream *
|
||
g_dbus_address_get_stream_finish (GAsyncResult *res,
|
||
gchar **out_guid,
|
||
GError **error)
|
||
{
|
||
GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (res);
|
||
GetStreamData *data;
|
||
GIOStream *ret;
|
||
|
||
g_return_val_if_fail (G_IS_ASYNC_RESULT (res), NULL);
|
||
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
|
||
|
||
g_warn_if_fail (g_simple_async_result_get_source_tag (simple) == g_dbus_address_get_stream);
|
||
|
||
ret = NULL;
|
||
|
||
data = g_simple_async_result_get_op_res_gpointer (simple);
|
||
if (g_simple_async_result_propagate_error (simple, error))
|
||
goto out;
|
||
|
||
ret = g_object_ref (data->stream);
|
||
if (out_guid != NULL)
|
||
*out_guid = g_strdup (data->guid);
|
||
|
||
out:
|
||
return ret;
|
||
}
|
||
|
||
/**
|
||
* g_dbus_address_get_stream_sync:
|
||
* @address: A valid D-Bus address.
|
||
* @out_guid: %NULL or return location to store the GUID extracted from @address, if any.
|
||
* @cancellable: A #GCancellable or %NULL.
|
||
* @error: Return location for error or %NULL.
|
||
*
|
||
* Synchronously connects to an endpoint specified by @address and
|
||
* sets up the connection so it is in a state to run the client-side
|
||
* of the D-Bus authentication conversation.
|
||
*
|
||
* This is a synchronous failable function. See
|
||
* g_dbus_address_get_stream() for the asynchronous version.
|
||
*
|
||
* Returns: A #GIOStream or %NULL if @error is set.
|
||
*
|
||
* Since: 2.26
|
||
*/
|
||
GIOStream *
|
||
g_dbus_address_get_stream_sync (const gchar *address,
|
||
gchar **out_guid,
|
||
GCancellable *cancellable,
|
||
GError **error)
|
||
{
|
||
GIOStream *ret;
|
||
gchar **addr_array;
|
||
guint n;
|
||
GError *last_error;
|
||
|
||
g_return_val_if_fail (address != NULL, NULL);
|
||
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
|
||
|
||
ret = NULL;
|
||
last_error = NULL;
|
||
|
||
addr_array = g_strsplit (address, ";", 0);
|
||
if (addr_array[0] == NULL)
|
||
{
|
||
last_error = g_error_new_literal (G_IO_ERROR,
|
||
G_IO_ERROR_INVALID_ARGUMENT,
|
||
_("The given address is empty"));
|
||
goto out;
|
||
}
|
||
|
||
for (n = 0; addr_array != NULL && addr_array[n] != NULL; n++)
|
||
{
|
||
const gchar *addr = addr_array[n];
|
||
GError *this_error;
|
||
|
||
this_error = NULL;
|
||
ret = g_dbus_address_try_connect_one (addr,
|
||
out_guid,
|
||
cancellable,
|
||
&this_error);
|
||
if (ret != NULL)
|
||
{
|
||
goto out;
|
||
}
|
||
else
|
||
{
|
||
g_assert (this_error != NULL);
|
||
if (last_error != NULL)
|
||
g_error_free (last_error);
|
||
last_error = this_error;
|
||
}
|
||
}
|
||
|
||
out:
|
||
if (ret != NULL)
|
||
{
|
||
if (last_error != NULL)
|
||
g_error_free (last_error);
|
||
}
|
||
else
|
||
{
|
||
g_assert (last_error != NULL);
|
||
g_propagate_error (error, last_error);
|
||
}
|
||
|
||
g_strfreev (addr_array);
|
||
return ret;
|
||
}
|
||
|
||
/* ---------------------------------------------------------------------------------------------------- */
|
||
|
||
#ifdef G_OS_UNIX
|
||
static gchar *
|
||
get_session_address_dbus_launch (GError **error)
|
||
{
|
||
gchar *ret;
|
||
gchar *machine_id;
|
||
gchar *command_line;
|
||
gchar *launch_stdout;
|
||
gchar *launch_stderr;
|
||
gint exit_status;
|
||
gchar *old_dbus_verbose;
|
||
gboolean restore_dbus_verbose;
|
||
|
||
ret = NULL;
|
||
machine_id = NULL;
|
||
command_line = NULL;
|
||
launch_stdout = NULL;
|
||
launch_stderr = NULL;
|
||
restore_dbus_verbose = FALSE;
|
||
old_dbus_verbose = NULL;
|
||
|
||
machine_id = _g_dbus_get_machine_id (error);
|
||
if (machine_id == NULL)
|
||
{
|
||
g_prefix_error (error, _("Cannot spawn a message bus without a machine-id: "));
|
||
goto out;
|
||
}
|
||
|
||
/* We're using private libdbus facilities here. When everything
|
||
* (X11, Mac OS X, Windows) is spec'ed out correctly (not even the
|
||
* X11 property is correctly documented right now) we should
|
||
* consider using the spec instead of dbus-launch.
|
||
*
|
||
* --autolaunch=MACHINEID
|
||
* This option implies that dbus-launch should scan for a previ‐
|
||
* ously-started session and reuse the values found there. If no
|
||
* session is found, it will start a new session. The --exit-with-
|
||
* session option is implied if --autolaunch is given. This option
|
||
* is for the exclusive use of libdbus, you do not want to use it
|
||
* manually. It may change in the future.
|
||
*/
|
||
|
||
/* TODO: maybe provide a variable for where to look for the dbus-launch binary? */
|
||
command_line = g_strdup_printf ("dbus-launch --autolaunch=%s --binary-syntax --close-stderr", machine_id);
|
||
|
||
if (G_UNLIKELY (_g_dbus_debug_address ()))
|
||
{
|
||
_g_dbus_debug_print_lock ();
|
||
g_print ("GDBus-debug:Address: Running `%s' to get bus address (possibly autolaunching)\n", command_line);
|
||
old_dbus_verbose = g_strdup (g_getenv ("DBUS_VERBOSE"));
|
||
restore_dbus_verbose = TRUE;
|
||
g_setenv ("DBUS_VERBOSE", "1", TRUE);
|
||
_g_dbus_debug_print_unlock ();
|
||
}
|
||
|
||
if (!g_spawn_command_line_sync (command_line,
|
||
&launch_stdout,
|
||
&launch_stderr,
|
||
&exit_status,
|
||
error))
|
||
{
|
||
g_prefix_error (error, _("Error spawning command line `%s': "), command_line);
|
||
goto out;
|
||
}
|
||
|
||
if (!WIFEXITED (exit_status))
|
||
{
|
||
gchar *escaped_stderr;
|
||
escaped_stderr = g_strescape (launch_stderr, "");
|
||
g_set_error (error,
|
||
G_IO_ERROR,
|
||
G_IO_ERROR_FAILED,
|
||
_("Abnormal program termination spawning command line `%s': %s"),
|
||
command_line,
|
||
escaped_stderr);
|
||
g_free (escaped_stderr);
|
||
goto out;
|
||
}
|
||
|
||
if (WEXITSTATUS (exit_status) != 0)
|
||
{
|
||
gchar *escaped_stderr;
|
||
escaped_stderr = g_strescape (launch_stderr, "");
|
||
g_set_error (error,
|
||
G_IO_ERROR,
|
||
G_IO_ERROR_FAILED,
|
||
_("Command line `%s' exited with non-zero exit status %d: %s"),
|
||
command_line,
|
||
WEXITSTATUS (exit_status),
|
||
escaped_stderr);
|
||
g_free (escaped_stderr);
|
||
goto out;
|
||
}
|
||
|
||
/* From the dbus-launch(1) man page:
|
||
*
|
||
* --binary-syntax Write to stdout a nul-terminated bus address,
|
||
* then the bus PID as a binary integer of size sizeof(pid_t),
|
||
* then the bus X window ID as a binary integer of size
|
||
* sizeof(long). Integers are in the machine's byte order, not
|
||
* network byte order or any other canonical byte order.
|
||
*/
|
||
ret = g_strdup (launch_stdout);
|
||
|
||
out:
|
||
if (G_UNLIKELY (_g_dbus_debug_address ()))
|
||
{
|
||
gchar *s;
|
||
_g_dbus_debug_print_lock ();
|
||
g_print ("GDBus-debug:Address: dbus-launch output:");
|
||
if (launch_stdout != NULL)
|
||
{
|
||
s = _g_dbus_hexdump (launch_stdout, strlen (launch_stdout) + 1 + sizeof (pid_t) + sizeof (long), 2);
|
||
g_print ("\n%s", s);
|
||
g_free (s);
|
||
}
|
||
else
|
||
{
|
||
g_print (" (none)\n");
|
||
}
|
||
g_print ("GDBus-debug:Address: dbus-launch stderr output:");
|
||
if (launch_stderr != NULL)
|
||
g_print ("\n%s", launch_stderr);
|
||
else
|
||
g_print (" (none)\n");
|
||
_g_dbus_debug_print_unlock ();
|
||
}
|
||
|
||
g_free (machine_id);
|
||
g_free (command_line);
|
||
g_free (launch_stdout);
|
||
g_free (launch_stderr);
|
||
if (G_UNLIKELY (restore_dbus_verbose))
|
||
{
|
||
if (old_dbus_verbose != NULL)
|
||
g_setenv ("DBUS_VERBOSE", old_dbus_verbose, TRUE);
|
||
else
|
||
g_unsetenv ("DBUS_VERBOSE");
|
||
}
|
||
g_free (old_dbus_verbose);
|
||
return ret;
|
||
}
|
||
#endif
|
||
|
||
/* ---------------------------------------------------------------------------------------------------- */
|
||
|
||
/* TODO: implement for UNIX, Win32 and OS X */
|
||
static gchar *
|
||
get_session_address_platform_specific (GError **error)
|
||
{
|
||
gchar *ret;
|
||
#ifdef G_OS_UNIX
|
||
/* need to handle OS X in a different way since `dbus-launch --autolaunch' probably won't work there */
|
||
ret = get_session_address_dbus_launch (error);
|
||
#else
|
||
ret = NULL;
|
||
g_set_error (error,
|
||
G_IO_ERROR,
|
||
G_IO_ERROR_FAILED,
|
||
_("Cannot determine session bus address (not implemented for this OS)"));
|
||
#endif
|
||
return ret;
|
||
}
|
||
|
||
/* ---------------------------------------------------------------------------------------------------- */
|
||
|
||
/**
|
||
* g_dbus_address_get_for_bus_sync:
|
||
* @bus_type: A #GBusType.
|
||
* @cancellable: A #GCancellable or %NULL.
|
||
* @error: Return location for error or %NULL.
|
||
*
|
||
* Synchronously looks up the D-Bus address for the well-known message
|
||
* bus instance specified by @bus_type. This may involve using various
|
||
* platform specific mechanisms.
|
||
*
|
||
* Returns: A valid D-Bus address string for @bus_type or %NULL if @error is set.
|
||
*
|
||
* Since: 2.26
|
||
*/
|
||
gchar *
|
||
g_dbus_address_get_for_bus_sync (GBusType bus_type,
|
||
GCancellable *cancellable,
|
||
GError **error)
|
||
{
|
||
gchar *ret;
|
||
const gchar *starter_bus;
|
||
GError *local_error;
|
||
|
||
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
|
||
|
||
ret = NULL;
|
||
local_error = NULL;
|
||
|
||
if (G_UNLIKELY (_g_dbus_debug_address ()))
|
||
{
|
||
guint n;
|
||
_g_dbus_debug_print_lock ();
|
||
g_print ("GDBus-debug:Address: In g_dbus_address_get_for_bus_sync() for bus type `%s'\n",
|
||
_g_dbus_enum_to_string (G_TYPE_BUS_TYPE, bus_type));
|
||
for (n = 0; n < 3; n++)
|
||
{
|
||
const gchar *k;
|
||
const gchar *v;
|
||
switch (n)
|
||
{
|
||
case 0: k = "DBUS_SESSION_BUS_ADDRESS"; break;
|
||
case 1: k = "DBUS_SYSTEM_BUS_ADDRESS"; break;
|
||
case 2: k = "DBUS_STARTER_BUS_TYPE"; break;
|
||
default: g_assert_not_reached ();
|
||
}
|
||
v = g_getenv (k);
|
||
g_print ("GDBus-debug:Address: env var %s", k);
|
||
if (v != NULL)
|
||
g_print ("=`%s'\n", v);
|
||
else
|
||
g_print (" is not set\n");
|
||
}
|
||
_g_dbus_debug_print_unlock ();
|
||
}
|
||
|
||
switch (bus_type)
|
||
{
|
||
case G_BUS_TYPE_SYSTEM:
|
||
ret = g_strdup (g_getenv ("DBUS_SYSTEM_BUS_ADDRESS"));
|
||
if (ret == NULL)
|
||
{
|
||
ret = g_strdup ("unix:path=/var/run/dbus/system_bus_socket");
|
||
}
|
||
break;
|
||
|
||
case G_BUS_TYPE_SESSION:
|
||
ret = g_strdup (g_getenv ("DBUS_SESSION_BUS_ADDRESS"));
|
||
if (ret == NULL)
|
||
{
|
||
ret = get_session_address_platform_specific (&local_error);
|
||
}
|
||
break;
|
||
|
||
case G_BUS_TYPE_STARTER:
|
||
starter_bus = g_getenv ("DBUS_STARTER_BUS_TYPE");
|
||
if (g_strcmp0 (starter_bus, "session") == 0)
|
||
{
|
||
ret = g_dbus_address_get_for_bus_sync (G_BUS_TYPE_SESSION, cancellable, &local_error);
|
||
goto out;
|
||
}
|
||
else if (g_strcmp0 (starter_bus, "system") == 0)
|
||
{
|
||
ret = g_dbus_address_get_for_bus_sync (G_BUS_TYPE_SYSTEM, cancellable, &local_error);
|
||
goto out;
|
||
}
|
||
else
|
||
{
|
||
if (starter_bus != NULL)
|
||
{
|
||
g_set_error (&local_error,
|
||
G_IO_ERROR,
|
||
G_IO_ERROR_FAILED,
|
||
_("Cannot determine bus address from DBUS_STARTER_BUS_TYPE environment variable"
|
||
" - unknown value `%s'"),
|
||
starter_bus);
|
||
}
|
||
else
|
||
{
|
||
g_set_error_literal (&local_error,
|
||
G_IO_ERROR,
|
||
G_IO_ERROR_FAILED,
|
||
_("Cannot determine bus address because the DBUS_STARTER_BUS_TYPE environment "
|
||
"variable is not set"));
|
||
}
|
||
}
|
||
break;
|
||
|
||
default:
|
||
g_set_error (&local_error,
|
||
G_IO_ERROR,
|
||
G_IO_ERROR_FAILED,
|
||
_("Unknown bus type %d"),
|
||
bus_type);
|
||
break;
|
||
}
|
||
|
||
out:
|
||
if (G_UNLIKELY (_g_dbus_debug_address ()))
|
||
{
|
||
_g_dbus_debug_print_lock ();
|
||
if (ret != NULL)
|
||
{
|
||
g_print ("GDBus-debug:Address: Returning address `%s' for bus type `%s'\n",
|
||
ret,
|
||
_g_dbus_enum_to_string (G_TYPE_BUS_TYPE, bus_type));
|
||
}
|
||
else
|
||
{
|
||
g_print ("GDBus-debug:Address: Cannot look-up address bus type `%s': %s\n",
|
||
_g_dbus_enum_to_string (G_TYPE_BUS_TYPE, bus_type),
|
||
local_error->message);
|
||
}
|
||
_g_dbus_debug_print_unlock ();
|
||
}
|
||
|
||
if (local_error != NULL)
|
||
g_propagate_error (error, local_error);
|
||
|
||
return ret;
|
||
}
|
||
|
||
#define __G_DBUS_ADDRESS_C__
|
||
#include "gioaliasdef.c"
|