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glib/gio/gdbusintrospection.c
Philip Withnall c7e21d2f59 docs: Move the GDBusIntrospection SECTION 
Move it to a separate content page as there is no `GDBusIntrospection`
type to hang the rest of the documentation off.

Signed-off-by: Philip Withnall <pwithnall@gnome.org>

Helps: #3037
2023-11-14 14:32:19 +00:00

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/* GDBus - GLib D-Bus Library
*
* Copyright (C) 2008-2010 Red Hat, Inc.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* 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 2.1 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, see <http://www.gnu.org/licenses/>.
*
* Author: David Zeuthen <davidz@redhat.com>
*/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include "gdbusintrospection.h"
#include "glibintl.h"
/* ---------------------------------------------------------------------------------------------------- */
#define _MY_DEFINE_BOXED_TYPE(TypeName, type_name) \
G_DEFINE_BOXED_TYPE (TypeName, type_name, type_name##_ref, type_name##_unref)
_MY_DEFINE_BOXED_TYPE (GDBusNodeInfo, g_dbus_node_info)
_MY_DEFINE_BOXED_TYPE (GDBusInterfaceInfo, g_dbus_interface_info)
_MY_DEFINE_BOXED_TYPE (GDBusMethodInfo, g_dbus_method_info)
_MY_DEFINE_BOXED_TYPE (GDBusSignalInfo, g_dbus_signal_info)
_MY_DEFINE_BOXED_TYPE (GDBusPropertyInfo, g_dbus_property_info)
_MY_DEFINE_BOXED_TYPE (GDBusArgInfo, g_dbus_arg_info)
_MY_DEFINE_BOXED_TYPE (GDBusAnnotationInfo, g_dbus_annotation_info)
#undef _MY_DEFINE_BOXED_TYPE
/* ---------------------------------------------------------------------------------------------------- */
typedef struct
{
/* stuff we are currently collecting */
GPtrArray *args;
GPtrArray *out_args;
GPtrArray *methods;
GPtrArray *signals;
GPtrArray *properties;
GPtrArray *interfaces;
GPtrArray *nodes;
GPtrArray *annotations;
/* A list of GPtrArray's containing annotations */
GSList *annotations_stack;
/* A list of GPtrArray's containing interfaces */
GSList *interfaces_stack;
/* A list of GPtrArray's containing nodes */
GSList *nodes_stack;
/* Whether the direction was "in" for last parsed arg */
gboolean last_arg_was_in;
/* Number of args currently being collected; used for assigning
* names to args without a "name" attribute
*/
guint num_args;
} ParseData;
/* ---------------------------------------------------------------------------------------------------- */
/**
* g_dbus_node_info_ref:
* @info: A #GDBusNodeInfo
*
* If @info is statically allocated does nothing. Otherwise increases
* the reference count.
*
* Returns: (not nullable): The same @info.
*
* Since: 2.26
*/
GDBusNodeInfo *
g_dbus_node_info_ref (GDBusNodeInfo *info)
{
if (g_atomic_int_get (&info->ref_count) == -1)
return info;
g_atomic_int_inc (&info->ref_count);
return info;
}
/**
* g_dbus_interface_info_ref:
* @info: A #GDBusInterfaceInfo
*
* If @info is statically allocated does nothing. Otherwise increases
* the reference count.
*
* Returns: (not nullable): The same @info.
*
* Since: 2.26
*/
GDBusInterfaceInfo *
g_dbus_interface_info_ref (GDBusInterfaceInfo *info)
{
if (g_atomic_int_get (&info->ref_count) == -1)
return info;
g_atomic_int_inc (&info->ref_count);
return info;
}
/**
* g_dbus_method_info_ref:
* @info: A #GDBusMethodInfo
*
* If @info is statically allocated does nothing. Otherwise increases
* the reference count.
*
* Returns: (not nullable): The same @info.
*
* Since: 2.26
*/
GDBusMethodInfo *
g_dbus_method_info_ref (GDBusMethodInfo *info)
{
if (g_atomic_int_get (&info->ref_count) == -1)
return info;
g_atomic_int_inc (&info->ref_count);
return info;
}
/**
* g_dbus_signal_info_ref:
* @info: A #GDBusSignalInfo
*
* If @info is statically allocated does nothing. Otherwise increases
* the reference count.
*
* Returns: (not nullable): The same @info.
*
* Since: 2.26
*/
GDBusSignalInfo *
g_dbus_signal_info_ref (GDBusSignalInfo *info)
{
if (g_atomic_int_get (&info->ref_count) == -1)
return info;
g_atomic_int_inc (&info->ref_count);
return info;
}
/**
* g_dbus_property_info_ref:
* @info: A #GDBusPropertyInfo
*
* If @info is statically allocated does nothing. Otherwise increases
* the reference count.
*
* Returns: (not nullable): The same @info.
*
* Since: 2.26
*/
GDBusPropertyInfo *
g_dbus_property_info_ref (GDBusPropertyInfo *info)
{
if (g_atomic_int_get (&info->ref_count) == -1)
return info;
g_atomic_int_inc (&info->ref_count);
return info;
}
/**
* g_dbus_arg_info_ref:
* @info: A #GDBusArgInfo
*
* If @info is statically allocated does nothing. Otherwise increases
* the reference count.
*
* Returns: (not nullable): The same @info.
*
* Since: 2.26
*/
GDBusArgInfo *
g_dbus_arg_info_ref (GDBusArgInfo *info)
{
if (g_atomic_int_get (&info->ref_count) == -1)
return info;
g_atomic_int_inc (&info->ref_count);
return info;
}
/**
* g_dbus_annotation_info_ref:
* @info: A #GDBusNodeInfo
*
* If @info is statically allocated does nothing. Otherwise increases
* the reference count.
*
* Returns: (not nullable): The same @info.
*
* Since: 2.26
*/
GDBusAnnotationInfo *
g_dbus_annotation_info_ref (GDBusAnnotationInfo *info)
{
if (g_atomic_int_get (&info->ref_count) == -1)
return info;
g_atomic_int_inc (&info->ref_count);
return info;
}
/* ---------------------------------------------------------------------------------------------------- */
static void
free_null_terminated_array (gpointer array, GDestroyNotify unref_func)
{
guint n;
gpointer *p = array;
if (p == NULL)
return;
for (n = 0; p[n] != NULL; n++)
unref_func (p[n]);
g_free (p);
}
/**
* g_dbus_annotation_info_unref:
* @info: A #GDBusAnnotationInfo.
*
* If @info is statically allocated, does nothing. Otherwise decreases
* the reference count of @info. When its reference count drops to 0,
* the memory used is freed.
*
* Since: 2.26
*/
void
g_dbus_annotation_info_unref (GDBusAnnotationInfo *info)
{
if (g_atomic_int_get (&info->ref_count) == -1)
return;
if (g_atomic_int_dec_and_test (&info->ref_count))
{
g_free (info->key);
g_free (info->value);
free_null_terminated_array (info->annotations, (GDestroyNotify) g_dbus_annotation_info_unref);
g_free (info);
}
}
/**
* g_dbus_arg_info_unref:
* @info: A #GDBusArgInfo.
*
* If @info is statically allocated, does nothing. Otherwise decreases
* the reference count of @info. When its reference count drops to 0,
* the memory used is freed.
*
* Since: 2.26
*/
void
g_dbus_arg_info_unref (GDBusArgInfo *info)
{
if (g_atomic_int_get (&info->ref_count) == -1)
return;
if (g_atomic_int_dec_and_test (&info->ref_count))
{
g_free (info->name);
g_free (info->signature);
free_null_terminated_array (info->annotations, (GDestroyNotify) g_dbus_annotation_info_unref);
g_free (info);
}
}
/**
* g_dbus_method_info_unref:
* @info: A #GDBusMethodInfo.
*
* If @info is statically allocated, does nothing. Otherwise decreases
* the reference count of @info. When its reference count drops to 0,
* the memory used is freed.
*
* Since: 2.26
*/
void
g_dbus_method_info_unref (GDBusMethodInfo *info)
{
if (g_atomic_int_get (&info->ref_count) == -1)
return;
if (g_atomic_int_dec_and_test (&info->ref_count))
{
g_free (info->name);
free_null_terminated_array (info->in_args, (GDestroyNotify) g_dbus_arg_info_unref);
free_null_terminated_array (info->out_args, (GDestroyNotify) g_dbus_arg_info_unref);
free_null_terminated_array (info->annotations, (GDestroyNotify) g_dbus_annotation_info_unref);
g_free (info);
}
}
/**
* g_dbus_signal_info_unref:
* @info: A #GDBusSignalInfo.
*
* If @info is statically allocated, does nothing. Otherwise decreases
* the reference count of @info. When its reference count drops to 0,
* the memory used is freed.
*
* Since: 2.26
*/
void
g_dbus_signal_info_unref (GDBusSignalInfo *info)
{
if (g_atomic_int_get (&info->ref_count) == -1)
return;
if (g_atomic_int_dec_and_test (&info->ref_count))
{
g_free (info->name);
free_null_terminated_array (info->args, (GDestroyNotify) g_dbus_arg_info_unref);
free_null_terminated_array (info->annotations, (GDestroyNotify) g_dbus_annotation_info_unref);
g_free (info);
}
}
/**
* g_dbus_property_info_unref:
* @info: A #GDBusPropertyInfo.
*
* If @info is statically allocated, does nothing. Otherwise decreases
* the reference count of @info. When its reference count drops to 0,
* the memory used is freed.
*
* Since: 2.26
*/
void
g_dbus_property_info_unref (GDBusPropertyInfo *info)
{
if (g_atomic_int_get (&info->ref_count) == -1)
return;
if (g_atomic_int_dec_and_test (&info->ref_count))
{
g_free (info->name);
g_free (info->signature);
free_null_terminated_array (info->annotations, (GDestroyNotify) g_dbus_annotation_info_unref);
g_free (info);
}
}
/**
* g_dbus_interface_info_unref:
* @info: A #GDBusInterfaceInfo.
*
* If @info is statically allocated, does nothing. Otherwise decreases
* the reference count of @info. When its reference count drops to 0,
* the memory used is freed.
*
* Since: 2.26
*/
void
g_dbus_interface_info_unref (GDBusInterfaceInfo *info)
{
if (g_atomic_int_get (&info->ref_count) == -1)
return;
if (g_atomic_int_dec_and_test (&info->ref_count))
{
g_free (info->name);
free_null_terminated_array (info->methods, (GDestroyNotify) g_dbus_method_info_unref);
free_null_terminated_array (info->signals, (GDestroyNotify) g_dbus_signal_info_unref);
free_null_terminated_array (info->properties, (GDestroyNotify) g_dbus_property_info_unref);
free_null_terminated_array (info->annotations, (GDestroyNotify) g_dbus_annotation_info_unref);
g_free (info);
}
}
/**
* g_dbus_node_info_unref:
* @info: A #GDBusNodeInfo.
*
* If @info is statically allocated, does nothing. Otherwise decreases
* the reference count of @info. When its reference count drops to 0,
* the memory used is freed.
*
* Since: 2.26
*/
void
g_dbus_node_info_unref (GDBusNodeInfo *info)
{
if (g_atomic_int_get (&info->ref_count) == -1)
return;
if (g_atomic_int_dec_and_test (&info->ref_count))
{
g_free (info->path);
free_null_terminated_array (info->interfaces, (GDestroyNotify) g_dbus_interface_info_unref);
free_null_terminated_array (info->nodes, (GDestroyNotify) g_dbus_node_info_unref);
free_null_terminated_array (info->annotations, (GDestroyNotify) g_dbus_annotation_info_unref);
g_free (info);
}
}
/* ---------------------------------------------------------------------------------------------------- */
static void
g_dbus_annotation_info_set (ParseData *data,
GDBusAnnotationInfo *info,
const gchar *key,
const gchar *value,
GDBusAnnotationInfo **embedded_annotations)
{
info->ref_count = 1;
if (key != NULL)
info->key = g_strdup (key);
if (value != NULL)
info->value = g_strdup (value);
if (embedded_annotations != NULL)
info->annotations = embedded_annotations;
}
static void
g_dbus_arg_info_set (ParseData *data,
GDBusArgInfo *info,
const gchar *name,
const gchar *signature,
GDBusAnnotationInfo **annotations)
{
info->ref_count = 1;
/* name may be NULL - TODO: compute name? */
if (name != NULL)
info->name = g_strdup (name);
if (signature != NULL)
info->signature = g_strdup (signature);
if (annotations != NULL)
info->annotations = annotations;
}
static void
g_dbus_method_info_set (ParseData *data,
GDBusMethodInfo *info,
const gchar *name,
GDBusArgInfo **in_args,
GDBusArgInfo **out_args,
GDBusAnnotationInfo **annotations)
{
info->ref_count = 1;
if (name != NULL)
info->name = g_strdup (name);
if (in_args != NULL)
info->in_args = in_args;
if (out_args != NULL)
info->out_args = out_args;
if (annotations != NULL)
info->annotations = annotations;
}
static void
g_dbus_signal_info_set (ParseData *data,
GDBusSignalInfo *info,
const gchar *name,
GDBusArgInfo **args,
GDBusAnnotationInfo **annotations)
{
info->ref_count = 1;
if (name != NULL)
info->name = g_strdup (name);
if (args != NULL)
info->args = args;
if (annotations != NULL)
info->annotations = annotations;
}
static void
g_dbus_property_info_set (ParseData *data,
GDBusPropertyInfo *info,
const gchar *name,
const gchar *signature,
GDBusPropertyInfoFlags flags,
GDBusAnnotationInfo **annotations)
{
info->ref_count = 1;
if (name != NULL)
info->name = g_strdup (name);
if (flags != G_DBUS_PROPERTY_INFO_FLAGS_NONE)
info->flags = flags;
if (signature != NULL)
info->signature = g_strdup (signature);
if (annotations != NULL)
info->annotations = annotations;
}
static void
g_dbus_interface_info_set (ParseData *data,
GDBusInterfaceInfo *info,
const gchar *name,
GDBusMethodInfo **methods,
GDBusSignalInfo **signals,
GDBusPropertyInfo **properties,
GDBusAnnotationInfo **annotations)
{
info->ref_count = 1;
if (name != NULL)
info->name = g_strdup (name);
if (methods != NULL)
info->methods = methods;
if (signals != NULL)
info->signals = signals;
if (properties != NULL)
info->properties = properties;
if (annotations != NULL)
info->annotations = annotations;
}
static void
g_dbus_node_info_set (ParseData *data,
GDBusNodeInfo *info,
const gchar *path,
GDBusInterfaceInfo **interfaces,
GDBusNodeInfo **nodes,
GDBusAnnotationInfo **annotations)
{
info->ref_count = 1;
if (path != NULL)
{
info->path = g_strdup (path);
/* TODO: relative / absolute path snafu */
}
if (interfaces != NULL)
info->interfaces = interfaces;
if (nodes != NULL)
info->nodes = nodes;
if (annotations != NULL)
info->annotations = annotations;
}
/* ---------------------------------------------------------------------------------------------------- */
static void
g_dbus_annotation_info_generate_xml (GDBusAnnotationInfo *info,
guint indent,
GString *string_builder)
{
gchar *tmp;
guint n;
tmp = g_markup_printf_escaped ("%*s<annotation name=\"%s\" value=\"%s\"",
indent, "",
info->key,
info->value);
g_string_append (string_builder, tmp);
g_free (tmp);
if (info->annotations == NULL)
{
g_string_append (string_builder, "/>\n");
}
else
{
g_string_append (string_builder, ">\n");
for (n = 0; info->annotations != NULL && info->annotations[n] != NULL; n++)
g_dbus_annotation_info_generate_xml (info->annotations[n],
indent + 2,
string_builder);
g_string_append_printf (string_builder, "%*s</annotation>\n",
indent, "");
}
}
static void
g_dbus_arg_info_generate_xml (GDBusArgInfo *info,
guint indent,
const gchar *extra_attributes,
GString *string_builder)
{
guint n;
g_string_append_printf (string_builder, "%*s<arg type=\"%s\"",
indent, "",
info->signature);
if (info->name != NULL)
g_string_append_printf (string_builder, " name=\"%s\"", info->name);
if (extra_attributes != NULL)
g_string_append_printf (string_builder, " %s", extra_attributes);
if (info->annotations == NULL)
{
g_string_append (string_builder, "/>\n");
}
else
{
g_string_append (string_builder, ">\n");
for (n = 0; info->annotations != NULL && info->annotations[n] != NULL; n++)
g_dbus_annotation_info_generate_xml (info->annotations[n],
indent + 2,
string_builder);
g_string_append_printf (string_builder, "%*s</arg>\n", indent, "");
}
}
static void
g_dbus_method_info_generate_xml (GDBusMethodInfo *info,
guint indent,
GString *string_builder)
{
guint n;
g_string_append_printf (string_builder, "%*s<method name=\"%s\"",
indent, "",
info->name);
if (info->annotations == NULL && info->in_args == NULL && info->out_args == NULL)
{
g_string_append (string_builder, "/>\n");
}
else
{
g_string_append (string_builder, ">\n");
for (n = 0; info->annotations != NULL && info->annotations[n] != NULL; n++)
g_dbus_annotation_info_generate_xml (info->annotations[n],
indent + 2,
string_builder);
for (n = 0; info->in_args != NULL && info->in_args[n] != NULL; n++)
g_dbus_arg_info_generate_xml (info->in_args[n],
indent + 2,
"direction=\"in\"",
string_builder);
for (n = 0; info->out_args != NULL && info->out_args[n] != NULL; n++)
g_dbus_arg_info_generate_xml (info->out_args[n],
indent + 2,
"direction=\"out\"",
string_builder);
g_string_append_printf (string_builder, "%*s</method>\n", indent, "");
}
}
static void
g_dbus_signal_info_generate_xml (GDBusSignalInfo *info,
guint indent,
GString *string_builder)
{
guint n;
g_string_append_printf (string_builder, "%*s<signal name=\"%s\"",
indent, "",
info->name);
if (info->annotations == NULL && info->args == NULL)
{
g_string_append (string_builder, "/>\n");
}
else
{
g_string_append (string_builder, ">\n");
for (n = 0; info->annotations != NULL && info->annotations[n] != NULL; n++)
g_dbus_annotation_info_generate_xml (info->annotations[n],
indent + 2,
string_builder);
for (n = 0; info->args != NULL && info->args[n] != NULL; n++)
g_dbus_arg_info_generate_xml (info->args[n],
indent + 2,
NULL,
string_builder);
g_string_append_printf (string_builder, "%*s</signal>\n", indent, "");
}
}
static void
g_dbus_property_info_generate_xml (GDBusPropertyInfo *info,
guint indent,
GString *string_builder)
{
guint n;
const gchar *access_string;
if ((info->flags & G_DBUS_PROPERTY_INFO_FLAGS_READABLE) &&
(info->flags & G_DBUS_PROPERTY_INFO_FLAGS_WRITABLE))
{
access_string = "readwrite";
}
else if (info->flags & G_DBUS_PROPERTY_INFO_FLAGS_READABLE)
{
access_string = "read";
}
else if (info->flags & G_DBUS_PROPERTY_INFO_FLAGS_WRITABLE)
{
access_string = "write";
}
else
{
g_assert_not_reached ();
}
g_string_append_printf (string_builder, "%*s<property type=\"%s\" name=\"%s\" access=\"%s\"",
indent, "",
info->signature,
info->name,
access_string);
if (info->annotations == NULL)
{
g_string_append (string_builder, "/>\n");
}
else
{
g_string_append (string_builder, ">\n");
for (n = 0; info->annotations != NULL && info->annotations[n] != NULL; n++)
g_dbus_annotation_info_generate_xml (info->annotations[n],
indent + 2,
string_builder);
g_string_append_printf (string_builder, "%*s</property>\n", indent, "");
}
}
/**
* g_dbus_interface_info_generate_xml:
* @info: A #GDBusNodeInfo
* @indent: Indentation level.
* @string_builder: A #GString to to append XML data to.
*
* Appends an XML representation of @info (and its children) to @string_builder.
*
* This function is typically used for generating introspection XML
* documents at run-time for handling the
* `org.freedesktop.DBus.Introspectable.Introspect`
* method.
*
* Since: 2.26
*/
void
g_dbus_interface_info_generate_xml (GDBusInterfaceInfo *info,
guint indent,
GString *string_builder)
{
guint n;
g_string_append_printf (string_builder, "%*s<interface name=\"%s\">\n",
indent, "",
info->name);
for (n = 0; info->annotations != NULL && info->annotations[n] != NULL; n++)
g_dbus_annotation_info_generate_xml (info->annotations[n],
indent + 2,
string_builder);
for (n = 0; info->methods != NULL && info->methods[n] != NULL; n++)
g_dbus_method_info_generate_xml (info->methods[n],
indent + 2,
string_builder);
for (n = 0; info->signals != NULL && info->signals[n] != NULL; n++)
g_dbus_signal_info_generate_xml (info->signals[n],
indent + 2,
string_builder);
for (n = 0; info->properties != NULL && info->properties[n] != NULL; n++)
g_dbus_property_info_generate_xml (info->properties[n],
indent + 2,
string_builder);
g_string_append_printf (string_builder, "%*s</interface>\n", indent, "");
}
/**
* g_dbus_node_info_generate_xml:
* @info: A #GDBusNodeInfo.
* @indent: Indentation level.
* @string_builder: A #GString to to append XML data to.
*
* Appends an XML representation of @info (and its children) to @string_builder.
*
* This function is typically used for generating introspection XML documents at run-time for
* handling the `org.freedesktop.DBus.Introspectable.Introspect` method.
*
* Since: 2.26
*/
void
g_dbus_node_info_generate_xml (GDBusNodeInfo *info,
guint indent,
GString *string_builder)
{
guint n;
g_string_append_printf (string_builder, "%*s<node", indent, "");
if (info->path != NULL)
g_string_append_printf (string_builder, " name=\"%s\"", info->path);
if (info->interfaces == NULL && info->nodes == NULL && info->annotations == NULL)
{
g_string_append (string_builder, "/>\n");
}
else
{
g_string_append (string_builder, ">\n");
for (n = 0; info->annotations != NULL && info->annotations[n] != NULL; n++)
g_dbus_annotation_info_generate_xml (info->annotations[n],
indent + 2,
string_builder);
for (n = 0; info->interfaces != NULL && info->interfaces[n] != NULL; n++)
g_dbus_interface_info_generate_xml (info->interfaces[n],
indent + 2,
string_builder);
for (n = 0; info->nodes != NULL && info->nodes[n] != NULL; n++)
g_dbus_node_info_generate_xml (info->nodes[n],
indent + 2,
string_builder);
g_string_append_printf (string_builder, "%*s</node>\n", indent, "");
}
}
/* ---------------------------------------------------------------------------------------------------- */
static GDBusAnnotationInfo **
parse_data_steal_annotations (ParseData *data,
guint *out_num_elements)
{
GDBusAnnotationInfo **ret;
if (out_num_elements != NULL)
*out_num_elements = data->annotations->len;
if (data->annotations == NULL)
ret = NULL;
else
{
g_ptr_array_add (data->annotations, NULL);
ret = (GDBusAnnotationInfo **) g_ptr_array_free (data->annotations, FALSE);
}
data->annotations = g_ptr_array_new ();
return ret;
}
static GDBusArgInfo **
parse_data_steal_args (ParseData *data,
guint *out_num_elements)
{
GDBusArgInfo **ret;
if (out_num_elements != NULL)
*out_num_elements = data->args->len;
if (data->args == NULL)
ret = NULL;
else
{
g_ptr_array_add (data->args, NULL);
ret = (GDBusArgInfo **) g_ptr_array_free (data->args, FALSE);
}
data->args = g_ptr_array_new ();
return ret;
}
static GDBusArgInfo **
parse_data_steal_out_args (ParseData *data,
guint *out_num_elements)
{
GDBusArgInfo **ret;
if (out_num_elements != NULL)
*out_num_elements = data->out_args->len;
if (data->out_args == NULL)
ret = NULL;
else
{
g_ptr_array_add (data->out_args, NULL);
ret = (GDBusArgInfo **) g_ptr_array_free (data->out_args, FALSE);
}
data->out_args = g_ptr_array_new ();
return ret;
}
static GDBusMethodInfo **
parse_data_steal_methods (ParseData *data,
guint *out_num_elements)
{
GDBusMethodInfo **ret;
if (out_num_elements != NULL)
*out_num_elements = data->methods->len;
if (data->methods == NULL)
ret = NULL;
else
{
g_ptr_array_add (data->methods, NULL);
ret = (GDBusMethodInfo **) g_ptr_array_free (data->methods, FALSE);
}
data->methods = g_ptr_array_new ();
return ret;
}
static GDBusSignalInfo **
parse_data_steal_signals (ParseData *data,
guint *out_num_elements)
{
GDBusSignalInfo **ret;
if (out_num_elements != NULL)
*out_num_elements = data->signals->len;
if (data->signals == NULL)
ret = NULL;
else
{
g_ptr_array_add (data->signals, NULL);
ret = (GDBusSignalInfo **) g_ptr_array_free (data->signals, FALSE);
}
data->signals = g_ptr_array_new ();
return ret;
}
static GDBusPropertyInfo **
parse_data_steal_properties (ParseData *data,
guint *out_num_elements)
{
GDBusPropertyInfo **ret;
if (out_num_elements != NULL)
*out_num_elements = data->properties->len;
if (data->properties == NULL)
ret = NULL;
else
{
g_ptr_array_add (data->properties, NULL);
ret = (GDBusPropertyInfo **) g_ptr_array_free (data->properties, FALSE);
}
data->properties = g_ptr_array_new ();
return ret;
}
static GDBusInterfaceInfo **
parse_data_steal_interfaces (ParseData *data,
guint *out_num_elements)
{
GDBusInterfaceInfo **ret;
if (out_num_elements != NULL)
*out_num_elements = data->interfaces->len;
if (data->interfaces == NULL)
ret = NULL;
else
{
g_ptr_array_add (data->interfaces, NULL);
ret = (GDBusInterfaceInfo **) g_ptr_array_free (data->interfaces, FALSE);
}
data->interfaces = g_ptr_array_new ();
return ret;
}
static GDBusNodeInfo **
parse_data_steal_nodes (ParseData *data,
guint *out_num_elements)
{
GDBusNodeInfo **ret;
if (out_num_elements != NULL)
*out_num_elements = data->nodes->len;
if (data->nodes == NULL)
ret = NULL;
else
{
g_ptr_array_add (data->nodes, NULL);
ret = (GDBusNodeInfo **) g_ptr_array_free (data->nodes, FALSE);
}
data->nodes = g_ptr_array_new ();
return ret;
}
/* ---------------------------------------------------------------------------------------------------- */
static void
parse_data_free_annotations (ParseData *data)
{
if (data->annotations == NULL)
return;
g_ptr_array_foreach (data->annotations, (GFunc) g_dbus_annotation_info_unref, NULL);
g_ptr_array_free (data->annotations, TRUE);
data->annotations = NULL;
}
static void
parse_data_free_args (ParseData *data)
{
if (data->args == NULL)
return;
g_ptr_array_foreach (data->args, (GFunc) g_dbus_arg_info_unref, NULL);
g_ptr_array_free (data->args, TRUE);
data->args = NULL;
}
static void
parse_data_free_out_args (ParseData *data)
{
if (data->out_args == NULL)
return;
g_ptr_array_foreach (data->out_args, (GFunc) g_dbus_arg_info_unref, NULL);
g_ptr_array_free (data->out_args, TRUE);
data->out_args = NULL;
}
static void
parse_data_free_methods (ParseData *data)
{
if (data->methods == NULL)
return;
g_ptr_array_foreach (data->methods, (GFunc) g_dbus_method_info_unref, NULL);
g_ptr_array_free (data->methods, TRUE);
data->methods = NULL;
}
static void
parse_data_free_signals (ParseData *data)
{
if (data->signals == NULL)
return;
g_ptr_array_foreach (data->signals, (GFunc) g_dbus_signal_info_unref, NULL);
g_ptr_array_free (data->signals, TRUE);
data->signals = NULL;
}
static void
parse_data_free_properties (ParseData *data)
{
if (data->properties == NULL)
return;
g_ptr_array_foreach (data->properties, (GFunc) g_dbus_property_info_unref, NULL);
g_ptr_array_free (data->properties, TRUE);
data->properties = NULL;
}
static void
parse_data_free_interfaces (ParseData *data)
{
if (data->interfaces == NULL)
return;
g_ptr_array_foreach (data->interfaces, (GFunc) g_dbus_interface_info_unref, NULL);
g_ptr_array_free (data->interfaces, TRUE);
data->interfaces = NULL;
}
static void
parse_data_free_nodes (ParseData *data)
{
if (data->nodes == NULL)
return;
g_ptr_array_foreach (data->nodes, (GFunc) g_dbus_node_info_unref, NULL);
g_ptr_array_free (data->nodes, TRUE);
data->nodes = NULL;
}
/* ---------------------------------------------------------------------------------------------------- */
static GDBusAnnotationInfo *
parse_data_get_annotation (ParseData *data,
gboolean create_new)
{
if (create_new)
g_ptr_array_add (data->annotations, g_new0 (GDBusAnnotationInfo, 1));
return data->annotations->pdata[data->annotations->len - 1];
}
static GDBusArgInfo *
parse_data_get_arg (ParseData *data,
gboolean create_new)
{
if (create_new)
g_ptr_array_add (data->args, g_new0 (GDBusArgInfo, 1));
return data->args->pdata[data->args->len - 1];
}
static GDBusArgInfo *
parse_data_get_out_arg (ParseData *data,
gboolean create_new)
{
if (create_new)
g_ptr_array_add (data->out_args, g_new0 (GDBusArgInfo, 1));
return data->out_args->pdata[data->out_args->len - 1];
}
static GDBusMethodInfo *
parse_data_get_method (ParseData *data,
gboolean create_new)
{
if (create_new)
g_ptr_array_add (data->methods, g_new0 (GDBusMethodInfo, 1));
return data->methods->pdata[data->methods->len - 1];
}
static GDBusSignalInfo *
parse_data_get_signal (ParseData *data,
gboolean create_new)
{
if (create_new)
g_ptr_array_add (data->signals, g_new0 (GDBusSignalInfo, 1));
return data->signals->pdata[data->signals->len - 1];
}
static GDBusPropertyInfo *
parse_data_get_property (ParseData *data,
gboolean create_new)
{
if (create_new)
g_ptr_array_add (data->properties, g_new0 (GDBusPropertyInfo, 1));
return data->properties->pdata[data->properties->len - 1];
}
static GDBusInterfaceInfo *
parse_data_get_interface (ParseData *data,
gboolean create_new)
{
if (create_new)
g_ptr_array_add (data->interfaces, g_new0 (GDBusInterfaceInfo, 1));
return data->interfaces->pdata[data->interfaces->len - 1];
}
static GDBusNodeInfo *
parse_data_get_node (ParseData *data,
gboolean create_new)
{
if (create_new)
g_ptr_array_add (data->nodes, g_new0 (GDBusNodeInfo, 1));
return data->nodes->pdata[data->nodes->len - 1];
}
/* ---------------------------------------------------------------------------------------------------- */
static ParseData *
parse_data_new (void)
{
ParseData *data;
data = g_new0 (ParseData, 1);
/* initialize arrays */
parse_data_steal_annotations (data, NULL);
parse_data_steal_args (data, NULL);
parse_data_steal_out_args (data, NULL);
parse_data_steal_methods (data, NULL);
parse_data_steal_signals (data, NULL);
parse_data_steal_properties (data, NULL);
parse_data_steal_interfaces (data, NULL);
parse_data_steal_nodes (data, NULL);
return data;
}
static void
parse_data_free (ParseData *data)
{
GSList *l;
/* free stack of annotation arrays */
for (l = data->annotations_stack; l != NULL; l = l->next)
{
GPtrArray *annotations = l->data;
g_ptr_array_foreach (annotations, (GFunc) g_dbus_annotation_info_unref, NULL);
g_ptr_array_free (annotations, TRUE);
}
g_slist_free (data->annotations_stack);
/* free stack of interface arrays */
for (l = data->interfaces_stack; l != NULL; l = l->next)
{
GPtrArray *interfaces = l->data;
g_ptr_array_foreach (interfaces, (GFunc) g_dbus_interface_info_unref, NULL);
g_ptr_array_free (interfaces, TRUE);
}
g_slist_free (data->interfaces_stack);
/* free stack of node arrays */
for (l = data->nodes_stack; l != NULL; l = l->next)
{
GPtrArray *nodes = l->data;
g_ptr_array_foreach (nodes, (GFunc) g_dbus_node_info_unref, NULL);
g_ptr_array_free (nodes, TRUE);
}
g_slist_free (data->nodes_stack);
/* free arrays (data->annotations, data->interfaces and data->nodes have been freed above) */
parse_data_free_args (data);
parse_data_free_out_args (data);
parse_data_free_methods (data);
parse_data_free_signals (data);
parse_data_free_properties (data);
parse_data_free_interfaces (data);
parse_data_free_annotations (data);
parse_data_free_nodes (data);
g_free (data);
}
/* ---------------------------------------------------------------------------------------------------- */
static void
parser_start_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **attribute_names,
const gchar **attribute_values,
gpointer user_data,
GError **error)
{
ParseData *data = user_data;
GSList *stack;
const gchar *name;
const gchar *type;
const gchar *access;
const gchar *direction;
const gchar *value;
name = NULL;
type = NULL;
access = NULL;
direction = NULL;
value = NULL;
stack = (GSList *) g_markup_parse_context_get_element_stack (context);
/* ---------------------------------------------------------------------------------------------------- */
if (strcmp (element_name, "node") == 0)
{
if (!(g_slist_length (stack) >= 1 || strcmp (stack->next->data, "node") != 0))
{
g_set_error_literal (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_INVALID_CONTENT,
"<node> elements can only be top-level or embedded in other <node> elements");
goto out;
}
if (!g_markup_collect_attributes (element_name,
attribute_names,
attribute_values,
error,
G_MARKUP_COLLECT_STRING | G_MARKUP_COLLECT_OPTIONAL, "name", &name,
/* some hand-written introspection XML documents use this */
G_MARKUP_COLLECT_STRING | G_MARKUP_COLLECT_OPTIONAL, "xmlns:doc", NULL,
G_MARKUP_COLLECT_INVALID))
goto out;
g_dbus_node_info_set (data,
parse_data_get_node (data, TRUE),
name,
NULL,
NULL,
NULL);
/* push the currently retrieved interfaces and nodes on the stack and prepare new arrays */
data->interfaces_stack = g_slist_prepend (data->interfaces_stack, data->interfaces);
data->interfaces = NULL;
parse_data_steal_interfaces (data, NULL);
data->nodes_stack = g_slist_prepend (data->nodes_stack, data->nodes);
data->nodes = NULL;
parse_data_steal_nodes (data, NULL);
}
/* ---------------------------------------------------------------------------------------------------- */
else if (strcmp (element_name, "interface") == 0)
{
if (g_slist_length (stack) < 2 || strcmp (stack->next->data, "node") != 0)
{
g_set_error_literal (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_INVALID_CONTENT,
"<interface> elements can only be embedded in <node> elements");
goto out;
}
if (!g_markup_collect_attributes (element_name,
attribute_names,
attribute_values,
error,
G_MARKUP_COLLECT_STRING, "name", &name,
/* seen in the wild */
G_MARKUP_COLLECT_STRING | G_MARKUP_COLLECT_OPTIONAL, "version", NULL,
G_MARKUP_COLLECT_INVALID))
goto out;
g_dbus_interface_info_set (data,
parse_data_get_interface (data, TRUE),
name,
NULL,
NULL,
NULL,
NULL);
}
/* ---------------------------------------------------------------------------------------------------- */
else if (strcmp (element_name, "method") == 0)
{
if (g_slist_length (stack) < 2 || strcmp (stack->next->data, "interface") != 0)
{
g_set_error_literal (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_INVALID_CONTENT,
"<method> elements can only be embedded in <interface> elements");
goto out;
}
if (!g_markup_collect_attributes (element_name,
attribute_names,
attribute_values,
error,
G_MARKUP_COLLECT_STRING, "name", &name,
/* seen in the wild */
G_MARKUP_COLLECT_STRING | G_MARKUP_COLLECT_OPTIONAL, "version", NULL,
G_MARKUP_COLLECT_INVALID))
goto out;
g_dbus_method_info_set (data,
parse_data_get_method (data, TRUE),
name,
NULL,
NULL,
NULL);
data->num_args = 0;
}
/* ---------------------------------------------------------------------------------------------------- */
else if (strcmp (element_name, "signal") == 0)
{
if (g_slist_length (stack) < 2 || strcmp (stack->next->data, "interface") != 0)
{
g_set_error_literal (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_INVALID_CONTENT,
"<signal> elements can only be embedded in <interface> elements");
goto out;
}
if (!g_markup_collect_attributes (element_name,
attribute_names,
attribute_values,
error,
G_MARKUP_COLLECT_STRING, "name", &name,
G_MARKUP_COLLECT_INVALID))
goto out;
g_dbus_signal_info_set (data,
parse_data_get_signal (data, TRUE),
name,
NULL,
NULL);
data->num_args = 0;
}
/* ---------------------------------------------------------------------------------------------------- */
else if (strcmp (element_name, "property") == 0)
{
GDBusPropertyInfoFlags flags;
if (g_slist_length (stack) < 2 || strcmp (stack->next->data, "interface") != 0)
{
g_set_error_literal (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_INVALID_CONTENT,
"<property> elements can only be embedded in <interface> elements");
goto out;
}
if (!g_markup_collect_attributes (element_name,
attribute_names,
attribute_values,
error,
G_MARKUP_COLLECT_STRING, "name", &name,
G_MARKUP_COLLECT_STRING, "type", &type,
G_MARKUP_COLLECT_STRING, "access", &access,
G_MARKUP_COLLECT_INVALID))
goto out;
if (strcmp (access, "read") == 0)
flags = G_DBUS_PROPERTY_INFO_FLAGS_READABLE;
else if (strcmp (access, "write") == 0)
flags = G_DBUS_PROPERTY_INFO_FLAGS_WRITABLE;
else if (strcmp (access, "readwrite") == 0)
flags = G_DBUS_PROPERTY_INFO_FLAGS_READABLE | G_DBUS_PROPERTY_INFO_FLAGS_WRITABLE;
else
{
g_set_error (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_INVALID_CONTENT,
"Unknown value '%s' of access attribute for element <property>",
access);
goto out;
}
g_dbus_property_info_set (data,
parse_data_get_property (data, TRUE),
name,
type,
flags,
NULL);
}
/* ---------------------------------------------------------------------------------------------------- */
else if (strcmp (element_name, "arg") == 0)
{
gboolean is_in;
gchar *name_to_use;
if (g_slist_length (stack) < 2 ||
(strcmp (stack->next->data, "method") != 0 &&
strcmp (stack->next->data, "signal") != 0))
{
g_set_error_literal (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_INVALID_CONTENT,
"<arg> elements can only be embedded in <method> or <signal> elements");
goto out;
}
if (!g_markup_collect_attributes (element_name,
attribute_names,
attribute_values,
error,
G_MARKUP_COLLECT_STRING | G_MARKUP_COLLECT_OPTIONAL, "name", &name,
G_MARKUP_COLLECT_STRING | G_MARKUP_COLLECT_OPTIONAL, "direction", &direction,
G_MARKUP_COLLECT_STRING, "type", &type,
G_MARKUP_COLLECT_INVALID))
goto out;
if (strcmp (stack->next->data, "method") == 0)
is_in = TRUE;
else
is_in = FALSE;
if (direction != NULL)
{
if (strcmp (direction, "in") == 0)
is_in = TRUE;
else if (strcmp (direction, "out") == 0)
is_in = FALSE;
else
{
g_set_error (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_INVALID_CONTENT,
"Unknown value '%s' of direction attribute",
direction);
goto out;
}
}
if (is_in && strcmp (stack->next->data, "signal") == 0)
{
g_set_error_literal (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_INVALID_CONTENT,
"Only direction 'out' is allowed for <arg> elements embedded in <signal>");
goto out;
}
if (name == NULL)
name_to_use = g_strdup_printf ("arg_%d", data->num_args);
else
name_to_use = g_strdup (name);
data->num_args++;
if (is_in)
{
g_dbus_arg_info_set (data,
parse_data_get_arg (data, TRUE),
name_to_use,
type,
NULL);
data->last_arg_was_in = TRUE;
}
else
{
g_dbus_arg_info_set (data,
parse_data_get_out_arg (data, TRUE),
name_to_use,
type,
NULL);
data->last_arg_was_in = FALSE;
}
g_free (name_to_use);
}
/* ---------------------------------------------------------------------------------------------------- */
else if (strcmp (element_name, "annotation") == 0)
{
if (g_slist_length (stack) < 2 ||
(strcmp (stack->next->data, "node") != 0 &&
strcmp (stack->next->data, "interface") != 0 &&
strcmp (stack->next->data, "signal") != 0 &&
strcmp (stack->next->data, "method") != 0 &&
strcmp (stack->next->data, "property") != 0 &&
strcmp (stack->next->data, "arg") != 0 &&
strcmp (stack->next->data, "annotation") != 0))
{
g_set_error_literal (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_INVALID_CONTENT,
"<annotation> elements can only be embedded in <node>, <interface>, <signal>, <method>, <property>, <arg> or <annotation> elements");
goto out;
}
if (!g_markup_collect_attributes (element_name,
attribute_names,
attribute_values,
error,
G_MARKUP_COLLECT_STRING, "name", &name,
G_MARKUP_COLLECT_STRING, "value", &value,
G_MARKUP_COLLECT_INVALID))
goto out;
g_dbus_annotation_info_set (data,
parse_data_get_annotation (data, TRUE),
name,
value,
NULL);
}
/* ---------------------------------------------------------------------------------------------------- */
else
{
/* don't bail on unknown elements; just ignore them */
}
/* ---------------------------------------------------------------------------------------------------- */
/* push the currently retrieved annotations on the stack and prepare a new one */
data->annotations_stack = g_slist_prepend (data->annotations_stack, data->annotations);
data->annotations = NULL;
parse_data_steal_annotations (data, NULL);
out:
;
}
/* ---------------------------------------------------------------------------------------------------- */
static GDBusAnnotationInfo **
steal_annotations (ParseData *data)
{
return parse_data_steal_annotations (data, NULL);
}
static void
parser_end_element (GMarkupParseContext *context,
const gchar *element_name,
gpointer user_data,
GError **error)
{
ParseData *data = user_data;
gboolean have_popped_annotations;
have_popped_annotations = FALSE;
if (strcmp (element_name, "node") == 0)
{
guint num_nodes;
guint num_interfaces;
GDBusNodeInfo **nodes;
GDBusInterfaceInfo **interfaces;
nodes = parse_data_steal_nodes (data, &num_nodes);
interfaces = parse_data_steal_interfaces (data, &num_interfaces);
/* destroy the nodes, interfaces for scope we're exiting and pop the nodes, interfaces from the
* scope we're reentering
*/
parse_data_free_interfaces (data);
data->interfaces = (GPtrArray *) data->interfaces_stack->data;
data->interfaces_stack = g_slist_remove (data->interfaces_stack, data->interfaces_stack->data);
parse_data_free_nodes (data);
data->nodes = (GPtrArray *) data->nodes_stack->data;
data->nodes_stack = g_slist_remove (data->nodes_stack, data->nodes_stack->data);
g_dbus_node_info_set (data,
parse_data_get_node (data, FALSE),
NULL,
interfaces,
nodes,
steal_annotations (data));
}
else if (strcmp (element_name, "interface") == 0)
{
guint num_methods;
guint num_signals;
guint num_properties;
GDBusMethodInfo **methods;
GDBusSignalInfo **signals;
GDBusPropertyInfo **properties;
methods = parse_data_steal_methods (data, &num_methods);
signals = parse_data_steal_signals (data, &num_signals);
properties = parse_data_steal_properties (data, &num_properties);
g_dbus_interface_info_set (data,
parse_data_get_interface (data, FALSE),
NULL,
methods,
signals,
properties,
steal_annotations (data));
}
else if (strcmp (element_name, "method") == 0)
{
guint in_num_args;
guint out_num_args;
GDBusArgInfo **in_args;
GDBusArgInfo **out_args;
in_args = parse_data_steal_args (data, &in_num_args);
out_args = parse_data_steal_out_args (data, &out_num_args);
g_dbus_method_info_set (data,
parse_data_get_method (data, FALSE),
NULL,
in_args,
out_args,
steal_annotations (data));
}
else if (strcmp (element_name, "signal") == 0)
{
guint num_args;
GDBusArgInfo **args;
args = parse_data_steal_out_args (data, &num_args);
g_dbus_signal_info_set (data,
parse_data_get_signal (data, FALSE),
NULL,
args,
steal_annotations (data));
}
else if (strcmp (element_name, "property") == 0)
{
g_dbus_property_info_set (data,
parse_data_get_property (data, FALSE),
NULL,
NULL,
G_DBUS_PROPERTY_INFO_FLAGS_NONE,
steal_annotations (data));
}
else if (strcmp (element_name, "arg") == 0)
{
g_dbus_arg_info_set (data,
data->last_arg_was_in ? parse_data_get_arg (data, FALSE) : parse_data_get_out_arg (data, FALSE),
NULL,
NULL,
steal_annotations (data));
}
else if (strcmp (element_name, "annotation") == 0)
{
GDBusAnnotationInfo **embedded_annotations;
embedded_annotations = steal_annotations (data);
/* destroy the annotations for scope we're exiting and pop the annotations from the scope we're reentering */
parse_data_free_annotations (data);
data->annotations = (GPtrArray *) data->annotations_stack->data;
data->annotations_stack = g_slist_remove (data->annotations_stack, data->annotations_stack->data);
have_popped_annotations = TRUE;
g_dbus_annotation_info_set (data,
parse_data_get_annotation (data, FALSE),
NULL,
NULL,
embedded_annotations);
}
else
{
/* don't bail on unknown elements; just ignore them */
}
if (!have_popped_annotations)
{
/* destroy the annotations for scope we're exiting and pop the annotations from the scope we're reentering */
parse_data_free_annotations (data);
data->annotations = (GPtrArray *) data->annotations_stack->data;
data->annotations_stack = g_slist_remove (data->annotations_stack, data->annotations_stack->data);
}
}
/* ---------------------------------------------------------------------------------------------------- */
static void
parser_error (GMarkupParseContext *context,
GError *error,
gpointer user_data)
{
gint line_number;
gint char_number;
g_markup_parse_context_get_position (context, &line_number, &char_number);
g_prefix_error (&error, "%d:%d: ",
line_number,
char_number);
}
/* ---------------------------------------------------------------------------------------------------- */
/**
* g_dbus_node_info_new_for_xml:
* @xml_data: Valid D-Bus introspection XML.
* @error: Return location for error.
*
* Parses @xml_data and returns a #GDBusNodeInfo representing the data.
*
* The introspection XML must contain exactly one top-level
* <node> element.
*
* Note that this routine is using a
* [GMarkup][glib-Simple-XML-Subset-Parser.description]-based
* parser that only accepts a subset of valid XML documents.
*
* Returns: A #GDBusNodeInfo structure or %NULL if @error is set. Free
* with g_dbus_node_info_unref().
*
* Since: 2.26
*/
GDBusNodeInfo *
g_dbus_node_info_new_for_xml (const gchar *xml_data,
GError **error)
{
GDBusNodeInfo *ret;
GMarkupParseContext *context;
GMarkupParser *parser;
guint num_nodes;
ParseData *data;
GDBusNodeInfo **ughret;
ret = NULL;
parser = NULL;
context = NULL;
parser = g_new0 (GMarkupParser, 1);
parser->start_element = parser_start_element;
parser->end_element = parser_end_element;
parser->error = parser_error;
data = parse_data_new ();
context = g_markup_parse_context_new (parser,
G_MARKUP_IGNORE_QUALIFIED,
data,
(GDestroyNotify) parse_data_free);
if (!g_markup_parse_context_parse (context,
xml_data,
strlen (xml_data),
error))
goto out;
if (!g_markup_parse_context_end_parse (context, error))
goto out;
ughret = parse_data_steal_nodes (data, &num_nodes);
if (num_nodes != 1)
{
guint n;
g_set_error (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_INVALID_CONTENT,
"Expected a single node in introspection XML, found %d",
num_nodes);
/* clean up */
for (n = 0; n < num_nodes; n++)
{
g_dbus_node_info_unref (ughret[n]);
ughret[n] = NULL;
}
}
ret = ughret[0];
g_free (ughret);
out:
g_free (parser);
if (context != NULL)
g_markup_parse_context_free (context);
return ret;
}
/* ---------------------------------------------------------------------------------------------------- */
/**
* g_dbus_annotation_info_lookup:
* @annotations: (array zero-terminated=1) (nullable): A %NULL-terminated array of annotations or %NULL.
* @name: The name of the annotation to look up.
*
* Looks up the value of an annotation.
*
* The cost of this function is O(n) in number of annotations.
*
* Returns: (nullable): The value or %NULL if not found. Do not free, it is owned by @annotations.
*
* Since: 2.26
*/
const gchar *
g_dbus_annotation_info_lookup (GDBusAnnotationInfo **annotations,
const gchar *name)
{
guint n;
const gchar *ret;
ret = NULL;
for (n = 0; annotations != NULL && annotations[n] != NULL; n++)
{
if (g_strcmp0 (annotations[n]->key, name) == 0)
{
ret = annotations[n]->value;
goto out;
}
}
out:
return ret;
}
/* ---------------------------------------------------------------------------------------------------- */
G_LOCK_DEFINE_STATIC (info_cache_lock);
typedef struct
{
gint use_count;
/* gchar* -> GDBusMethodInfo* */
GHashTable *method_name_to_data;
/* gchar* -> GDBusMethodInfo* */
GHashTable *signal_name_to_data;
/* gchar* -> GDBusMethodInfo* */
GHashTable *property_name_to_data;
} InfoCacheEntry;
static void
info_cache_free (InfoCacheEntry *cache)
{
g_assert (cache->use_count == 0);
g_hash_table_unref (cache->method_name_to_data);
g_hash_table_unref (cache->signal_name_to_data);
g_hash_table_unref (cache->property_name_to_data);
g_slice_free (InfoCacheEntry, cache);
}
/* maps from GDBusInterfaceInfo* to InfoCacheEntry* */
static GHashTable *info_cache = NULL;
/* ---------------------------------------------------------------------------------------------------- */
/**
* g_dbus_interface_info_lookup_method:
* @info: A #GDBusInterfaceInfo.
* @name: A D-Bus method name (typically in CamelCase)
*
* Looks up information about a method.
*
* The cost of this function is O(n) in number of methods unless
* g_dbus_interface_info_cache_build() has been used on @info.
*
* Returns: (nullable) (transfer none): A #GDBusMethodInfo or %NULL if not found. Do not free, it is owned by @info.
*
* Since: 2.26
*/
GDBusMethodInfo *
g_dbus_interface_info_lookup_method (GDBusInterfaceInfo *info,
const gchar *name)
{
guint n;
GDBusMethodInfo *result;
G_LOCK (info_cache_lock);
if (G_LIKELY (info_cache != NULL))
{
InfoCacheEntry *cache;
cache = g_hash_table_lookup (info_cache, info);
if (G_LIKELY (cache != NULL))
{
result = g_hash_table_lookup (cache->method_name_to_data, name);
G_UNLOCK (info_cache_lock);
goto out;
}
}
G_UNLOCK (info_cache_lock);
for (n = 0; info->methods != NULL && info->methods[n] != NULL; n++)
{
GDBusMethodInfo *i = info->methods[n];
if (g_strcmp0 (i->name, name) == 0)
{
result = i;
goto out;
}
}
result = NULL;
out:
return result;
}
/* ---------------------------------------------------------------------------------------------------- */
/**
* g_dbus_interface_info_lookup_signal:
* @info: A #GDBusInterfaceInfo.
* @name: A D-Bus signal name (typically in CamelCase)
*
* Looks up information about a signal.
*
* The cost of this function is O(n) in number of signals unless
* g_dbus_interface_info_cache_build() has been used on @info.
*
* Returns: (nullable) (transfer none): A #GDBusSignalInfo or %NULL if not found. Do not free, it is owned by @info.
*
* Since: 2.26
*/
GDBusSignalInfo *
g_dbus_interface_info_lookup_signal (GDBusInterfaceInfo *info,
const gchar *name)
{
guint n;
GDBusSignalInfo *result;
G_LOCK (info_cache_lock);
if (G_LIKELY (info_cache != NULL))
{
InfoCacheEntry *cache;
cache = g_hash_table_lookup (info_cache, info);
if (G_LIKELY (cache != NULL))
{
result = g_hash_table_lookup (cache->signal_name_to_data, name);
G_UNLOCK (info_cache_lock);
goto out;
}
}
G_UNLOCK (info_cache_lock);
for (n = 0; info->signals != NULL && info->signals[n] != NULL; n++)
{
GDBusSignalInfo *i = info->signals[n];
if (g_strcmp0 (i->name, name) == 0)
{
result = i;
goto out;
}
}
result = NULL;
out:
return result;
}
/* ---------------------------------------------------------------------------------------------------- */
/**
* g_dbus_interface_info_lookup_property:
* @info: A #GDBusInterfaceInfo.
* @name: A D-Bus property name (typically in CamelCase).
*
* Looks up information about a property.
*
* The cost of this function is O(n) in number of properties unless
* g_dbus_interface_info_cache_build() has been used on @info.
*
* Returns: (nullable) (transfer none): A #GDBusPropertyInfo or %NULL if not found. Do not free, it is owned by @info.
*
* Since: 2.26
*/
GDBusPropertyInfo *
g_dbus_interface_info_lookup_property (GDBusInterfaceInfo *info,
const gchar *name)
{
guint n;
GDBusPropertyInfo *result;
G_LOCK (info_cache_lock);
if (G_LIKELY (info_cache != NULL))
{
InfoCacheEntry *cache;
cache = g_hash_table_lookup (info_cache, info);
if (G_LIKELY (cache != NULL))
{
result = g_hash_table_lookup (cache->property_name_to_data, name);
G_UNLOCK (info_cache_lock);
goto out;
}
}
G_UNLOCK (info_cache_lock);
for (n = 0; info->properties != NULL && info->properties[n] != NULL; n++)
{
GDBusPropertyInfo *i = info->properties[n];
if (g_strcmp0 (i->name, name) == 0)
{
result = i;
goto out;
}
}
result = NULL;
out:
return result;
}
/* ---------------------------------------------------------------------------------------------------- */
/**
* g_dbus_interface_info_cache_build:
* @info: A #GDBusInterfaceInfo.
*
* Builds a lookup-cache to speed up
* g_dbus_interface_info_lookup_method(),
* g_dbus_interface_info_lookup_signal() and
* g_dbus_interface_info_lookup_property().
*
* If this has already been called with @info, the existing cache is
* used and its use count is increased.
*
* Note that @info cannot be modified until
* g_dbus_interface_info_cache_release() is called.
*
* Since: 2.30
*/
void
g_dbus_interface_info_cache_build (GDBusInterfaceInfo *info)
{
InfoCacheEntry *cache;
guint n;
G_LOCK (info_cache_lock);
if (info_cache == NULL)
info_cache = g_hash_table_new_full (g_direct_hash, g_direct_equal, NULL, (GDestroyNotify) info_cache_free);
cache = g_hash_table_lookup (info_cache, info);
if (cache != NULL)
{
cache->use_count += 1;
goto out;
}
cache = g_slice_new0 (InfoCacheEntry);
cache->use_count = 1;
cache->method_name_to_data = g_hash_table_new (g_str_hash, g_str_equal);
cache->signal_name_to_data = g_hash_table_new (g_str_hash, g_str_equal);
cache->property_name_to_data = g_hash_table_new (g_str_hash, g_str_equal);
for (n = 0; info->methods != NULL && info->methods[n] != NULL; n++)
g_hash_table_insert (cache->method_name_to_data, info->methods[n]->name, info->methods[n]);
for (n = 0; info->signals != NULL && info->signals[n] != NULL; n++)
g_hash_table_insert (cache->signal_name_to_data, info->signals[n]->name, info->signals[n]);
for (n = 0; info->properties != NULL && info->properties[n] != NULL; n++)
g_hash_table_insert (cache->property_name_to_data, info->properties[n]->name, info->properties[n]);
g_hash_table_insert (info_cache, info, cache);
out:
G_UNLOCK (info_cache_lock);
}
/**
* g_dbus_interface_info_cache_release:
* @info: A GDBusInterfaceInfo
*
* Decrements the usage count for the cache for @info built by
* g_dbus_interface_info_cache_build() (if any) and frees the
* resources used by the cache if the usage count drops to zero.
*
* Since: 2.30
*/
void
g_dbus_interface_info_cache_release (GDBusInterfaceInfo *info)
{
InfoCacheEntry *cache;
G_LOCK (info_cache_lock);
if (G_UNLIKELY (info_cache == NULL))
{
g_warning ("%s called for interface %s but there is no cache", info->name, G_STRFUNC);
goto out;
}
cache = g_hash_table_lookup (info_cache, info);
if (G_UNLIKELY (cache == NULL))
{
g_warning ("%s called for interface %s but there is no cache entry", info->name, G_STRFUNC);
goto out;
}
cache->use_count -= 1;
if (cache->use_count == 0)
{
g_hash_table_remove (info_cache, info);
/* could nuke info_cache itself if empty */
}
out:
G_UNLOCK (info_cache_lock);
}
/* ---------------------------------------------------------------------------------------------------- */
/**
* g_dbus_node_info_lookup_interface:
* @info: A #GDBusNodeInfo.
* @name: A D-Bus interface name.
*
* Looks up information about an interface.
*
* The cost of this function is O(n) in number of interfaces.
*
* Returns: (nullable) (transfer none): A #GDBusInterfaceInfo or %NULL if not found. Do not free, it is owned by @info.
*
* Since: 2.26
*/
GDBusInterfaceInfo *
g_dbus_node_info_lookup_interface (GDBusNodeInfo *info,
const gchar *name)
{
guint n;
GDBusInterfaceInfo *result;
for (n = 0; info->interfaces != NULL && info->interfaces[n] != NULL; n++)
{
GDBusInterfaceInfo *i = info->interfaces[n];
if (g_strcmp0 (i->name, name) == 0)
{
result = i;
goto out;
}
}
result = NULL;
out:
return result;
}
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