+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2013 Lennart Poettering
-
- systemd 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.
-
- systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include "util.h"
-#include "bus-introspect.h"
-#include "bus-signature.h"
-#include "bus-internal.h"
-#include "bus-protocol.h"
-
-int introspect_begin(struct introspect *i, bool trusted) {
- assert(i);
-
- zero(*i);
- i->trusted = trusted;
-
- i->f = open_memstream(&i->introspection, &i->size);
- if (!i->f)
- return -ENOMEM;
-
- fputs(BUS_INTROSPECT_DOCTYPE
- "<node>\n", i->f);
-
- return 0;
-}
-
-int introspect_write_default_interfaces(struct introspect *i, bool object_manager) {
- assert(i);
-
- fputs(BUS_INTROSPECT_INTERFACE_PEER
- BUS_INTROSPECT_INTERFACE_INTROSPECTABLE
- BUS_INTROSPECT_INTERFACE_PROPERTIES, i->f);
-
- if (object_manager)
- fputs(BUS_INTROSPECT_INTERFACE_OBJECT_MANAGER, i->f);
-
- return 0;
-}
-
-int introspect_write_child_nodes(struct introspect *i, Set *s, const char *prefix) {
- char *node;
-
- assert(i);
- assert(prefix);
-
- while ((node = set_steal_first(s))) {
- const char *e;
-
- e = object_path_startswith(node, prefix);
- if (e && e[0])
- fprintf(i->f, " <node name=\"%s\"/>\n", e);
-
- free(node);
- }
-
- return 0;
-}
-
-static void introspect_write_flags(struct introspect *i, int type, int flags) {
- if (flags & SD_BUS_VTABLE_DEPRECATED)
- fputs(" <annotation name=\"org.freedesktop.DBus.Deprecated\" value=\"true\"/>\n", i->f);
-
- if (type == _SD_BUS_VTABLE_METHOD && (flags & SD_BUS_VTABLE_METHOD_NO_REPLY))
- fputs(" <annotation name=\"org.freedesktop.DBus.Method.NoReply\" value=\"true\"/>\n", i->f);
-
- if (type == _SD_BUS_VTABLE_PROPERTY || type == _SD_BUS_VTABLE_WRITABLE_PROPERTY) {
- if (flags & SD_BUS_VTABLE_PROPERTY_CONST)
- fputs(" <annotation name=\"org.freedesktop.DBus.Property.EmitsChangedSignal\" value=\"const\"/>\n", i->f);
- else if (flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION)
- fputs(" <annotation name=\"org.freedesktop.DBus.Property.EmitsChangedSignal\" value=\"invalidates\"/>\n", i->f);
- else if (!(flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE))
- fputs(" <annotation name=\"org.freedesktop.DBus.Property.EmitsChangedSignal\" value=\"false\"/>\n", i->f);
- }
-
- if (!i->trusted &&
- (type == _SD_BUS_VTABLE_METHOD || type == _SD_BUS_VTABLE_WRITABLE_PROPERTY) &&
- !(flags & SD_BUS_VTABLE_UNPRIVILEGED))
- fputs(" <annotation name=\"org.freedesktop.systemd1.Privileged\" value=\"true\"/>\n", i->f);
-}
-
-static int introspect_write_arguments(struct introspect *i, const char *signature, const char *direction) {
- int r;
-
- for (;;) {
- size_t l;
-
- if (!*signature)
- return 0;
-
- r = signature_element_length(signature, &l);
- if (r < 0)
- return r;
-
- fprintf(i->f, " <arg type=\"%.*s\"", (int) l, signature);
-
- if (direction)
- fprintf(i->f, " direction=\"%s\"/>\n", direction);
- else
- fputs("/>\n", i->f);
-
- signature += l;
- }
-}
-
-int introspect_write_interface(struct introspect *i, const sd_bus_vtable *v) {
- assert(i);
- assert(v);
-
- for (; v->type != _SD_BUS_VTABLE_END; v++) {
-
- /* Ignore methods, signals and properties that are
- * marked "hidden", but do show the interface
- * itself */
-
- if (v->type != _SD_BUS_VTABLE_START && (v->flags & SD_BUS_VTABLE_HIDDEN))
- continue;
-
- switch (v->type) {
-
- case _SD_BUS_VTABLE_START:
- if (v->flags & SD_BUS_VTABLE_DEPRECATED)
- fputs(" <annotation name=\"org.freedesktop.DBus.Deprecated\" value=\"true\"/>\n", i->f);
- break;
-
- case _SD_BUS_VTABLE_METHOD:
- fprintf(i->f, " <method name=\"%s\">\n", v->x.method.member);
- introspect_write_arguments(i, strempty(v->x.method.signature), "in");
- introspect_write_arguments(i, strempty(v->x.method.result), "out");
- introspect_write_flags(i, v->type, v->flags);
- fputs(" </method>\n", i->f);
- break;
-
- case _SD_BUS_VTABLE_PROPERTY:
- case _SD_BUS_VTABLE_WRITABLE_PROPERTY:
- fprintf(i->f, " <property name=\"%s\" type=\"%s\" access=\"%s\">\n",
- v->x.property.member,
- v->x.property.signature,
- v->type == _SD_BUS_VTABLE_WRITABLE_PROPERTY ? "readwrite" : "read");
- introspect_write_flags(i, v->type, v->flags);
- fputs(" </property>\n", i->f);
- break;
-
- case _SD_BUS_VTABLE_SIGNAL:
- fprintf(i->f, " <signal name=\"%s\">\n", v->x.signal.member);
- introspect_write_arguments(i, strempty(v->x.signal.signature), NULL);
- introspect_write_flags(i, v->type, v->flags);
- fputs(" </signal>\n", i->f);
- break;
- }
-
- }
-
- return 0;
-}
-
-int introspect_finish(struct introspect *i, sd_bus *bus, sd_bus_message *m, sd_bus_message **reply) {
- sd_bus_message *q;
- int r;
-
- assert(i);
- assert(m);
- assert(reply);
-
- fputs("</node>\n", i->f);
- fflush(i->f);
-
- if (ferror(i->f))
- return -ENOMEM;
-
- r = sd_bus_message_new_method_return(m, &q);
- if (r < 0)
- return r;
-
- r = sd_bus_message_append(q, "s", i->introspection);
- if (r < 0) {
- sd_bus_message_unref(q);
- return r;
- }
-
- *reply = q;
- return 0;
-}
-
-void introspect_free(struct introspect *i) {
- assert(i);
-
- if (i->f)
- fclose(i->f);
-
- if (i->introspection)
- free(i->introspection);
-
- zero(*i);
-}
~ianmdlvl / elogind.git / blobdiff