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0d268c4825
Nicks and blurbs don't have any practical use for gio/gobject libraries. Leaving tests untouched since this features is still used by other libraries. Closes #2991
354 lines
10 KiB
C
354 lines
10 KiB
C
/* GIO - GLib Input, Output and Streaming Library
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*
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* Copyright (C) 2010 Red Hat, Inc.
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* Copyright (C) 2009 Codethink Limited
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*
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* SPDX-License-Identifier: LGPL-2.1-or-later
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* See the included COPYING file for more information.
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*
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* Authors: David Zeuthen <davidz@redhat.com>
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*/
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/**
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* GUnixCredentialsMessage:
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*
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* This [class@Gio.SocketControlMessage] contains a [class@Gio.Credentials]
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* instance. It may be sent using [method@Gio.Socket.send_message] and received
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* using [method@Gio.Socket.receive_message] over UNIX sockets (ie: sockets in
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* the `G_SOCKET_FAMILY_UNIX` family).
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*
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* For an easier way to send and receive credentials over
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* stream-oriented UNIX sockets, see
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* [method@Gio.UnixConnection.send_credentials] and
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* [method@Gio.UnixConnection.receive_credentials]. To receive credentials of
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* a foreign process connected to a socket, use
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* [method@Gio.Socket.get_credentials].
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*
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* Since GLib 2.72, `GUnixCredentialMessage` is available on all platforms. It
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* requires underlying system support (such as Windows 10 with `AF_UNIX`) at run
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* time.
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*
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* Before GLib 2.72, `<gio/gunixcredentialsmessage.h>` belonged to the UNIX-specific
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* GIO interfaces, thus you had to use the `gio-unix-2.0.pc` pkg-config file
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* when using it. This is no longer necessary since GLib 2.72.
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*
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* Since: 2.26
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*/
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#include "config.h"
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/* ---------------------------------------------------------------------------------------------------- */
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#include <fcntl.h>
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#include <errno.h>
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#include <string.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include "gunixcredentialsmessage.h"
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#include "gcredentials.h"
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#include "gcredentialsprivate.h"
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#include "gnetworking.h"
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#include "glibintl.h"
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struct _GUnixCredentialsMessagePrivate
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{
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GCredentials *credentials;
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};
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enum
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{
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PROP_0,
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PROP_CREDENTIALS
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};
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G_DEFINE_TYPE_WITH_PRIVATE (GUnixCredentialsMessage, g_unix_credentials_message, G_TYPE_SOCKET_CONTROL_MESSAGE)
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static gsize
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g_unix_credentials_message_get_size (GSocketControlMessage *message)
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{
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#if G_CREDENTIALS_UNIX_CREDENTIALS_MESSAGE_SUPPORTED
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return G_CREDENTIALS_NATIVE_SIZE;
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#else
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return 0;
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#endif
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}
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static int
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g_unix_credentials_message_get_level (GSocketControlMessage *message)
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{
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#if G_CREDENTIALS_UNIX_CREDENTIALS_MESSAGE_SUPPORTED
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return SOL_SOCKET;
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#else
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return 0;
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#endif
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}
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static int
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g_unix_credentials_message_get_msg_type (GSocketControlMessage *message)
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{
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#if G_CREDENTIALS_USE_LINUX_UCRED
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return SCM_CREDENTIALS;
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#elif G_CREDENTIALS_USE_FREEBSD_CMSGCRED
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return SCM_CREDS;
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#elif G_CREDENTIALS_USE_NETBSD_UNPCBID
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return SCM_CREDS;
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#elif G_CREDENTIALS_USE_SOLARIS_UCRED
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return SCM_UCRED;
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#elif G_CREDENTIALS_UNIX_CREDENTIALS_MESSAGE_SUPPORTED
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#error "G_CREDENTIALS_UNIX_CREDENTIALS_MESSAGE_SUPPORTED is set but there is no msg_type defined for this platform"
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#else
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/* includes G_CREDENTIALS_USE_APPLE_XUCRED */
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return 0;
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#endif
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}
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static GSocketControlMessage *
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g_unix_credentials_message_deserialize (gint level,
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gint type,
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gsize size,
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gpointer data)
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{
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#if G_CREDENTIALS_UNIX_CREDENTIALS_MESSAGE_SUPPORTED
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GSocketControlMessage *message;
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GCredentials *credentials;
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if (level != SOL_SOCKET || type != g_unix_credentials_message_get_msg_type (NULL))
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return NULL;
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if (size != G_CREDENTIALS_NATIVE_SIZE)
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{
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g_warning ("Expected a credentials struct of %" G_GSIZE_FORMAT " bytes but "
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"got %" G_GSIZE_FORMAT " bytes of data",
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G_CREDENTIALS_NATIVE_SIZE, size);
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return NULL;
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}
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credentials = g_credentials_new ();
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g_credentials_set_native (credentials, G_CREDENTIALS_NATIVE_TYPE, data);
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if (g_credentials_get_unix_user (credentials, NULL) == (uid_t) -1)
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{
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/* This happens on Linux if the remote side didn't pass the credentials */
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g_object_unref (credentials);
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return NULL;
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}
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message = g_unix_credentials_message_new_with_credentials (credentials);
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g_object_unref (credentials);
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return message;
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#else /* !G_CREDENTIALS_UNIX_CREDENTIALS_MESSAGE_SUPPORTED */
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return NULL;
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#endif
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}
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static void
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g_unix_credentials_message_serialize (GSocketControlMessage *_message,
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gpointer data)
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{
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#if G_CREDENTIALS_UNIX_CREDENTIALS_MESSAGE_SUPPORTED
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GUnixCredentialsMessage *message = G_UNIX_CREDENTIALS_MESSAGE (_message);
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memcpy (data,
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g_credentials_get_native (message->priv->credentials,
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G_CREDENTIALS_NATIVE_TYPE),
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G_CREDENTIALS_NATIVE_SIZE);
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#endif
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}
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static void
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g_unix_credentials_message_finalize (GObject *object)
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{
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GUnixCredentialsMessage *message = G_UNIX_CREDENTIALS_MESSAGE (object);
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if (message->priv->credentials != NULL)
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g_object_unref (message->priv->credentials);
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G_OBJECT_CLASS (g_unix_credentials_message_parent_class)->finalize (object);
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}
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static void
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g_unix_credentials_message_init (GUnixCredentialsMessage *message)
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{
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message->priv = g_unix_credentials_message_get_instance_private (message);
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}
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static void
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g_unix_credentials_message_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GUnixCredentialsMessage *message = G_UNIX_CREDENTIALS_MESSAGE (object);
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switch (prop_id)
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{
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case PROP_CREDENTIALS:
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g_value_set_object (value, message->priv->credentials);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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g_unix_credentials_message_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GUnixCredentialsMessage *message = G_UNIX_CREDENTIALS_MESSAGE (object);
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switch (prop_id)
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{
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case PROP_CREDENTIALS:
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message->priv->credentials = g_value_dup_object (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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g_unix_credentials_message_constructed (GObject *object)
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{
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GUnixCredentialsMessage *message = G_UNIX_CREDENTIALS_MESSAGE (object);
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if (message->priv->credentials == NULL)
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message->priv->credentials = g_credentials_new ();
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if (G_OBJECT_CLASS (g_unix_credentials_message_parent_class)->constructed != NULL)
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G_OBJECT_CLASS (g_unix_credentials_message_parent_class)->constructed (object);
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}
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static void
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g_unix_credentials_message_class_init (GUnixCredentialsMessageClass *class)
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{
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GSocketControlMessageClass *scm_class;
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GObjectClass *gobject_class;
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gobject_class = G_OBJECT_CLASS (class);
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gobject_class->get_property = g_unix_credentials_message_get_property;
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gobject_class->set_property = g_unix_credentials_message_set_property;
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gobject_class->finalize = g_unix_credentials_message_finalize;
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gobject_class->constructed = g_unix_credentials_message_constructed;
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scm_class = G_SOCKET_CONTROL_MESSAGE_CLASS (class);
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scm_class->get_size = g_unix_credentials_message_get_size;
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scm_class->get_level = g_unix_credentials_message_get_level;
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scm_class->get_type = g_unix_credentials_message_get_msg_type;
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scm_class->serialize = g_unix_credentials_message_serialize;
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scm_class->deserialize = g_unix_credentials_message_deserialize;
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/**
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* GUnixCredentialsMessage:credentials:
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*
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* The credentials stored in the message.
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*
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* Since: 2.26
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*/
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g_object_class_install_property (gobject_class,
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PROP_CREDENTIALS,
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g_param_spec_object ("credentials", NULL, NULL,
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G_TYPE_CREDENTIALS,
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G_PARAM_READABLE |
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G_PARAM_WRITABLE |
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G_PARAM_CONSTRUCT_ONLY |
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G_PARAM_STATIC_NAME |
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G_PARAM_STATIC_BLURB |
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G_PARAM_STATIC_NICK));
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}
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/* ---------------------------------------------------------------------------------------------------- */
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/**
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* g_unix_credentials_message_is_supported:
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*
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* Checks if passing #GCredentials on a #GSocket is supported on this platform.
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*
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* Returns: %TRUE if supported, %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_unix_credentials_message_is_supported (void)
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{
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#if G_CREDENTIALS_UNIX_CREDENTIALS_MESSAGE_SUPPORTED
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return TRUE;
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#else
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return FALSE;
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#endif
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}
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/* ---------------------------------------------------------------------------------------------------- */
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/**
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* g_unix_credentials_message_new:
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*
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* Creates a new #GUnixCredentialsMessage with credentials matching the current processes.
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*
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* Returns: a new #GUnixCredentialsMessage
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*
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* Since: 2.26
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*/
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GSocketControlMessage *
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g_unix_credentials_message_new (void)
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{
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g_return_val_if_fail (g_unix_credentials_message_is_supported (), NULL);
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return g_object_new (G_TYPE_UNIX_CREDENTIALS_MESSAGE,
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NULL);
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}
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/**
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* g_unix_credentials_message_new_with_credentials:
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* @credentials: A #GCredentials object.
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*
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* Creates a new #GUnixCredentialsMessage holding @credentials.
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*
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* Returns: a new #GUnixCredentialsMessage
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*
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* Since: 2.26
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*/
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GSocketControlMessage *
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g_unix_credentials_message_new_with_credentials (GCredentials *credentials)
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{
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g_return_val_if_fail (G_IS_CREDENTIALS (credentials), NULL);
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g_return_val_if_fail (g_unix_credentials_message_is_supported (), NULL);
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return g_object_new (G_TYPE_UNIX_CREDENTIALS_MESSAGE,
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"credentials", credentials,
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NULL);
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}
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/**
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* g_unix_credentials_message_get_credentials:
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* @message: A #GUnixCredentialsMessage.
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*
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* Gets the credentials stored in @message.
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*
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* Returns: (transfer none): A #GCredentials instance. Do not free, it is owned by @message.
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*
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* Since: 2.26
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*/
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GCredentials *
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g_unix_credentials_message_get_credentials (GUnixCredentialsMessage *message)
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{
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g_return_val_if_fail (G_IS_UNIX_CREDENTIALS_MESSAGE (message), NULL);
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return message->priv->credentials;
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}
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