1 files changed, 286 insertions, 0 deletions
diff --git a/wpa_supplicant/dbus/dbus_new_introspect.c b/wpa_supplicant/dbus/dbus_new_introspect.c
new file mode 100644
index 000000000000..6c721bf556db
--- /dev/null
+++ b/wpa_supplicant/dbus/dbus_new_introspect.c
@@ -0,0 +1,286 @@
+/*
+ * wpa_supplicant - D-Bus introspection
+ * Copyright (c) 2006, Dan Williams <dcbw@redhat.com> and Red Hat, Inc.
+ * Copyright (c) 2009, Witold Sowa <witold.sowa@gmail.com>
+ * Copyright (c) 2010, Jouni Malinen <j@w1.fi>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+#include "utils/includes.h"
+
+#include "utils/common.h"
+#include "utils/list.h"
+#include "utils/wpabuf.h"
+#include "dbus_common_i.h"
+#include "dbus_new_helpers.h"
+
+
+struct interfaces {
+	struct dl_list list;
+	char *dbus_interface;
+	struct wpabuf *xml;
+};
+
+
+static struct interfaces * add_interface(struct dl_list *list,
+					 const char *dbus_interface)
+{
+	struct interfaces *iface;
+
+	dl_list_for_each(iface, list, struct interfaces, list) {
+		if (os_strcmp(iface->dbus_interface, dbus_interface) == 0)
+			return iface; /* already in the list */
+	}
+
+	iface = os_zalloc(sizeof(struct interfaces));
+	if (!iface)
+		return NULL;
+	iface->dbus_interface = os_strdup(dbus_interface);
+	iface->xml = wpabuf_alloc(15000);
+	if (iface->dbus_interface == NULL || iface->xml == NULL) {
+		os_free(iface->dbus_interface);
+		wpabuf_free(iface->xml);
+		os_free(iface);
+		return NULL;
+	}
+	wpabuf_printf(iface->xml, "<interface name=\"%s\">", dbus_interface);
+	dl_list_add_tail(list, &iface->list);
+	return iface;
+}
+
+
+static void add_arg(struct wpabuf *xml, const char *name, const char *type,
+		    const char *direction)
+{
+	wpabuf_printf(xml, "<arg name=\"%s\"", name);
+	if (type)
+		wpabuf_printf(xml, " type=\"%s\"", type);
+	if (direction)
+		wpabuf_printf(xml, " direction=\"%s\"", direction);
+	wpabuf_put_str(xml, "/>");
+}
+
+
+static void add_entry(struct wpabuf *xml, const char *type, const char *name,
+		      const struct wpa_dbus_argument *args, int include_dir)
+{
+	const struct wpa_dbus_argument *arg;
+
+	if (args == NULL || args->name == NULL) {
+		wpabuf_printf(xml, "<%s name=\"%s\"/>", type, name);
+		return;
+	}
+	wpabuf_printf(xml, "<%s name=\"%s\">", type, name);
+	for (arg = args; arg && arg->name; arg++) {
+		add_arg(xml, arg->name, arg->type,
+			include_dir ? (arg->dir == ARG_IN ? "in" : "out") :
+			NULL);
+	}
+	wpabuf_printf(xml, "</%s>", type);
+}
+
+
+static void add_property(struct wpabuf *xml,
+			 const struct wpa_dbus_property_desc *dsc)
+{
+	wpabuf_printf(xml, "<property name=\"%s\" type=\"%s\" "
+		      "access=\"%s%s\"/>",
+		      dsc->dbus_property, dsc->type,
+		      dsc->getter ? "read" : "",
+		      dsc->setter ? "write" : "");
+}
+
+
+static void extract_interfaces_methods(
+	struct dl_list *list, const struct wpa_dbus_method_desc *methods)
+{
+	const struct wpa_dbus_method_desc *dsc;
+	struct interfaces *iface;
+
+	for (dsc = methods; dsc && dsc->dbus_method; dsc++) {
+		iface = add_interface(list, dsc->dbus_interface);
+		if (iface)
+			add_entry(iface->xml, "method", dsc->dbus_method,
+				  dsc->args, 1);
+	}
+}
+
+
+static void extract_interfaces_signals(
+	struct dl_list *list, const struct wpa_dbus_signal_desc *signals)
+{
+	const struct wpa_dbus_signal_desc *dsc;
+	struct interfaces *iface;
+
+	for (dsc = signals; dsc && dsc->dbus_signal; dsc++) {
+		iface = add_interface(list, dsc->dbus_interface);
+		if (iface)
+			add_entry(iface->xml, "signal", dsc->dbus_signal,
+				  dsc->args, 0);
+	}
+}
+
+
+static void extract_interfaces_properties(
+	struct dl_list *list, const struct wpa_dbus_property_desc *properties)
+{
+	const struct wpa_dbus_property_desc *dsc;
+	struct interfaces *iface;
+
+	for (dsc = properties; dsc && dsc->dbus_property; dsc++) {
+		iface = add_interface(list, dsc->dbus_interface);
+		if (iface)
+			add_property(iface->xml, dsc);
+	}
+}
+
+
+/**
+ * extract_interfaces - Extract interfaces from methods, signals and props
+ * @list: Interface list to be filled
+ * @obj_dsc: Description of object from which interfaces will be extracted
+ *
+ * Iterates over all methods, signals, and properties registered with an
+ * object and collects all declared DBus interfaces and create interfaces'
+ * node in XML root node for each. Returned list elements contain interface
+ * name and XML node of corresponding interface.
+ */
+static void extract_interfaces(struct dl_list *list,
+			       struct wpa_dbus_object_desc *obj_dsc)
+{
+	extract_interfaces_methods(list, obj_dsc->methods);
+	extract_interfaces_signals(list, obj_dsc->signals);
+	extract_interfaces_properties(list, obj_dsc->properties);
+}
+
+
+static void add_interfaces(struct dl_list *list, struct wpabuf *xml)
+{
+	struct interfaces *iface, *n;
+
+	dl_list_for_each_safe(iface, n, list, struct interfaces, list) {
+		if (wpabuf_len(iface->xml) + 20 < wpabuf_tailroom(xml)) {
+			wpabuf_put_buf(xml, iface->xml);
+			wpabuf_put_str(xml, "</interface>");
+		} else {
+			wpa_printf(MSG_DEBUG,
+				   "dbus: Not enough room for add_interfaces inspect data: tailroom %u, add %u",
+				   (unsigned int) wpabuf_tailroom(xml),
+				   (unsigned int) wpabuf_len(iface->xml));
+		}
+		dl_list_del(&iface->list);
+		wpabuf_free(iface->xml);
+		os_free(iface->dbus_interface);
+		os_free(iface);
+	}
+}
+
+
+static void add_child_nodes(struct wpabuf *xml, DBusConnection *con,
+			    const char *path)
+{
+	char **children;
+	int i;
+
+	/* add child nodes to introspection tree */
+	dbus_connection_list_registered(con, path, &children);
+	for (i = 0; children[i]; i++)
+		wpabuf_printf(xml, "<node name=\"%s\"/>", children[i]);
+	dbus_free_string_array(children);
+}
+
+
+static void add_introspectable_interface(struct wpabuf *xml)
+{
+	wpabuf_printf(xml, "<interface name=\"%s\">"
+		      "<method name=\"%s\">"
+		      "<arg name=\"data\" type=\"s\" direction=\"out\"/>"
+		      "</method>"
+		      "</interface>",
+		      WPA_DBUS_INTROSPECTION_INTERFACE,
+		      WPA_DBUS_INTROSPECTION_METHOD);
+}
+
+
+static void add_properties_interface(struct wpabuf *xml)
+{
+	wpabuf_printf(xml, "<interface name=\"%s\">",
+		      WPA_DBUS_PROPERTIES_INTERFACE);
+
+	wpabuf_printf(xml, "<method name=\"%s\">", WPA_DBUS_PROPERTIES_GET);
+	add_arg(xml, "interface", "s", "in");
+	add_arg(xml, "propname", "s", "in");
+	add_arg(xml, "value", "v", "out");
+	wpabuf_put_str(xml, "</method>");
+
+	wpabuf_printf(xml, "<method name=\"%s\">", WPA_DBUS_PROPERTIES_GETALL);
+	add_arg(xml, "interface", "s", "in");
+	add_arg(xml, "props", "a{sv}", "out");
+	wpabuf_put_str(xml, "</method>");
+
+	wpabuf_printf(xml, "<method name=\"%s\">", WPA_DBUS_PROPERTIES_SET);
+	add_arg(xml, "interface", "s", "in");
+	add_arg(xml, "propname", "s", "in");
+	add_arg(xml, "value", "v", "in");
+	wpabuf_put_str(xml, "</method>");
+
+	wpabuf_put_str(xml, "</interface>");
+}
+
+
+static void add_wpas_interfaces(struct wpabuf *xml,
+				struct wpa_dbus_object_desc *obj_dsc)
+{
+	struct dl_list ifaces;
+
+	dl_list_init(&ifaces);
+	extract_interfaces(&ifaces, obj_dsc);
+	add_interfaces(&ifaces, xml);
+}
+
+
+/**
+ * wpa_dbus_introspect - Responds for Introspect calls on object
+ * @message: Message with Introspect call
+ * @obj_dsc: Object description on which Introspect was called
+ * Returns: Message with introspection result XML string as only argument
+ *
+ * Iterates over all methods, signals and properties registered with
+ * object and generates introspection data for the object as XML string.
+ */
+DBusMessage * wpa_dbus_introspect(DBusMessage *message,
+				  struct wpa_dbus_object_desc *obj_dsc)
+{
+
+	DBusMessage *reply;
+	struct wpabuf *xml;
+
+	xml = wpabuf_alloc(30000);
+	if (xml == NULL)
+		return NULL;
+
+	wpabuf_put_str(xml, "<?xml version=\"1.0\"?>\n");
+	wpabuf_put_str(xml, DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE);
+	wpabuf_put_str(xml, "<node>");
+
+	add_introspectable_interface(xml);
+	add_properties_interface(xml);
+	add_wpas_interfaces(xml, obj_dsc);
+	add_child_nodes(xml, obj_dsc->connection,
+			dbus_message_get_path(message));
+
+	wpabuf_put_str(xml, "</node>\n");
+
+	reply = dbus_message_new_method_return(message);
+	if (reply) {
+		const char *intro_str = wpabuf_head(xml);
+
+		dbus_message_append_args(reply, DBUS_TYPE_STRING, &intro_str,
+					 DBUS_TYPE_INVALID);
+	}
+	wpabuf_free(xml);
+
+	return reply;
+}