8e050193e1
n->path is pointing to the value now, we set s = NULL above.
2425 lines
72 KiB
C
2425 lines
72 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2013 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <sys/capability.h>
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#include "strv.h"
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#include "set.h"
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#include "bus-internal.h"
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#include "bus-message.h"
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#include "bus-type.h"
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#include "bus-signature.h"
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#include "bus-introspect.h"
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#include "bus-objects.h"
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#include "bus-util.h"
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static int node_vtable_get_userdata(
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sd_bus *bus,
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const char *path,
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struct node_vtable *c,
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void **userdata,
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sd_bus_error *error) {
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void *u;
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int r;
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assert(bus);
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assert(path);
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assert(c);
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u = c->userdata;
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if (c->find) {
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r = c->find(bus, path, c->interface, u, &u, error);
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if (r < 0)
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return r;
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if (sd_bus_error_is_set(error))
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return -sd_bus_error_get_errno(error);
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if (r == 0)
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return r;
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}
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if (userdata)
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*userdata = u;
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return 1;
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}
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static void *vtable_property_convert_userdata(const sd_bus_vtable *p, void *u) {
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assert(p);
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return (uint8_t*) u + p->x.property.offset;
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}
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static int vtable_property_get_userdata(
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sd_bus *bus,
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const char *path,
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struct vtable_member *p,
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void **userdata,
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sd_bus_error *error) {
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void *u;
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int r;
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assert(bus);
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assert(path);
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assert(p);
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assert(userdata);
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r = node_vtable_get_userdata(bus, path, p->parent, &u, error);
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if (r <= 0)
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return r;
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if (bus->nodes_modified)
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return 0;
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*userdata = vtable_property_convert_userdata(p->vtable, u);
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return 1;
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}
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static int add_enumerated_to_set(
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sd_bus *bus,
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const char *prefix,
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struct node_enumerator *first,
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Set *s,
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sd_bus_error *error) {
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struct node_enumerator *c;
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int r;
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assert(bus);
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assert(prefix);
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assert(s);
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LIST_FOREACH(enumerators, c, first) {
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char **children = NULL, **k;
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if (bus->nodes_modified)
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return 0;
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r = c->callback(bus, prefix, c->userdata, &children, error);
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if (r < 0)
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return r;
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if (sd_bus_error_is_set(error))
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return -sd_bus_error_get_errno(error);
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STRV_FOREACH(k, children) {
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if (r < 0) {
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free(*k);
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continue;
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}
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if (!object_path_is_valid(*k)){
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free(*k);
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r = -EINVAL;
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continue;
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}
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if (!object_path_startswith(*k, prefix)) {
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free(*k);
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continue;
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}
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r = set_consume(s, *k);
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if (r == -EEXIST)
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r = 0;
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}
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free(children);
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if (r < 0)
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return r;
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}
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return 0;
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}
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static int add_subtree_to_set(
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sd_bus *bus,
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const char *prefix,
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struct node *n,
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Set *s,
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sd_bus_error *error) {
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struct node *i;
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int r;
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assert(bus);
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assert(prefix);
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assert(n);
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assert(s);
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r = add_enumerated_to_set(bus, prefix, n->enumerators, s, error);
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if (r < 0)
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return r;
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if (bus->nodes_modified)
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return 0;
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LIST_FOREACH(siblings, i, n->child) {
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char *t;
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if (!object_path_startswith(i->path, prefix))
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continue;
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t = strdup(i->path);
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if (!t)
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return -ENOMEM;
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r = set_consume(s, t);
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if (r < 0 && r != -EEXIST)
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return r;
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r = add_subtree_to_set(bus, prefix, i, s, error);
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if (r < 0)
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return r;
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if (bus->nodes_modified)
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return 0;
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}
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return 0;
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}
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static int get_child_nodes(
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sd_bus *bus,
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const char *prefix,
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struct node *n,
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Set **_s,
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sd_bus_error *error) {
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Set *s = NULL;
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int r;
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assert(bus);
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assert(prefix);
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assert(n);
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assert(_s);
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s = set_new(string_hash_func, string_compare_func);
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if (!s)
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return -ENOMEM;
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r = add_subtree_to_set(bus, prefix, n, s, error);
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if (r < 0) {
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set_free_free(s);
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return r;
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}
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*_s = s;
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return 0;
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}
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static int node_callbacks_run(
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sd_bus *bus,
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sd_bus_message *m,
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struct node_callback *first,
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bool require_fallback,
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bool *found_object) {
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struct node_callback *c;
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int r;
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assert(bus);
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assert(m);
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assert(found_object);
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LIST_FOREACH(callbacks, c, first) {
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_cleanup_bus_error_free_ sd_bus_error error_buffer = SD_BUS_ERROR_NULL;
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if (bus->nodes_modified)
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return 0;
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if (require_fallback && !c->is_fallback)
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continue;
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*found_object = true;
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if (c->last_iteration == bus->iteration_counter)
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continue;
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c->last_iteration = bus->iteration_counter;
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r = sd_bus_message_rewind(m, true);
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if (r < 0)
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return r;
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r = c->callback(bus, m, c->userdata, &error_buffer);
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r = bus_maybe_reply_error(m, r, &error_buffer);
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if (r != 0)
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return r;
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}
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return 0;
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}
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#define CAPABILITY_SHIFT(x) (((x) >> __builtin_ctzll(_SD_BUS_VTABLE_CAPABILITY_MASK)) & 0xFFFF)
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static int check_access(sd_bus *bus, sd_bus_message *m, struct vtable_member *c, sd_bus_error *error) {
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_cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
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uint64_t cap;
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uid_t uid;
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int r;
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assert(bus);
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assert(m);
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assert(c);
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/* If the entire bus is trusted let's grant access */
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if (bus->trusted)
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return 0;
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/* If the member is marked UNPRIVILEGED let's grant access */
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if (c->vtable->flags & SD_BUS_VTABLE_UNPRIVILEGED)
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return 0;
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/* If we are not connected to kdbus we cannot retrieve the
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* effective capability set without race. Since we need this
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* for a security decision we cannot use racy data, hence
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* don't request it. */
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if (bus->is_kernel)
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r = sd_bus_query_sender_creds(m, SD_BUS_CREDS_UID|SD_BUS_CREDS_EFFECTIVE_CAPS, &creds);
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else
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r = sd_bus_query_sender_creds(m, SD_BUS_CREDS_UID, &creds);
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if (r < 0)
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return r;
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|
|
/* Check have the caller has the requested capability
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* set. Note that the flags value contains the capability
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* number plus one, which we need to subtract here. We do this
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* so that we have 0 as special value for "default
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* capability". */
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cap = CAPABILITY_SHIFT(c->vtable->flags);
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if (cap == 0)
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cap = CAPABILITY_SHIFT(c->parent->vtable[0].flags);
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if (cap == 0)
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cap = CAP_SYS_ADMIN;
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else
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cap --;
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r = sd_bus_creds_has_effective_cap(creds, cap);
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if (r > 0)
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return 1;
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|
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/* Caller has same UID as us, then let's grant access */
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r = sd_bus_creds_get_uid(creds, &uid);
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if (r >= 0) {
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if (uid == getuid())
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return 1;
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}
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|
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return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Access to %s.%s() not permitted.", c->interface, c->member);
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}
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static int method_callbacks_run(
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sd_bus *bus,
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sd_bus_message *m,
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struct vtable_member *c,
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bool require_fallback,
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bool *found_object) {
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|
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|
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
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const char *signature;
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void *u;
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int r;
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|
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assert(bus);
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assert(m);
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assert(c);
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assert(found_object);
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|
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if (require_fallback && !c->parent->is_fallback)
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return 0;
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r = check_access(bus, m, c, &error);
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if (r < 0)
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return bus_maybe_reply_error(m, r, &error);
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|
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r = node_vtable_get_userdata(bus, m->path, c->parent, &u, &error);
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if (r <= 0)
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return bus_maybe_reply_error(m, r, &error);
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|
if (bus->nodes_modified)
|
|
return 0;
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|
|
|
*found_object = true;
|
|
|
|
if (c->last_iteration == bus->iteration_counter)
|
|
return 0;
|
|
|
|
c->last_iteration = bus->iteration_counter;
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|
|
r = sd_bus_message_rewind(m, true);
|
|
if (r < 0)
|
|
return r;
|
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|
|
signature = sd_bus_message_get_signature(m, true);
|
|
if (!signature)
|
|
return -EINVAL;
|
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|
|
if (!streq(strempty(c->vtable->x.method.signature), signature))
|
|
return sd_bus_reply_method_errorf(
|
|
m,
|
|
SD_BUS_ERROR_INVALID_ARGS,
|
|
"Invalid arguments '%s' to call %s.%s(), expecting '%s'.",
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signature, c->interface, c->member, strempty(c->vtable->x.method.signature));
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|
|
/* Keep track what the signature of the reply to this message
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* should be, so that this can be enforced when sealing the
|
|
* reply. */
|
|
m->enforced_reply_signature = strempty(c->vtable->x.method.result);
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|
|
if (c->vtable->x.method.handler) {
|
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r = c->vtable->x.method.handler(bus, m, u, &error);
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return bus_maybe_reply_error(m, r, &error);
|
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}
|
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|
|
/* If the method callback is NULL, make this a successful NOP */
|
|
r = sd_bus_reply_method_return(m, NULL);
|
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if (r < 0)
|
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return r;
|
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|
|
return 1;
|
|
}
|
|
|
|
static int invoke_property_get(
|
|
sd_bus *bus,
|
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const sd_bus_vtable *v,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
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void *userdata,
|
|
sd_bus_error *error) {
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|
|
|
const void *p;
|
|
int r;
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|
|
|
assert(bus);
|
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assert(v);
|
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assert(path);
|
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assert(interface);
|
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assert(property);
|
|
assert(reply);
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|
|
|
if (v->x.property.get) {
|
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r = v->x.property.get(bus, path, interface, property, reply, userdata, error);
|
|
if (r < 0)
|
|
return r;
|
|
if (sd_bus_error_is_set(error))
|
|
return -sd_bus_error_get_errno(error);
|
|
return r;
|
|
}
|
|
|
|
/* Automatic handling if no callback is defined. */
|
|
|
|
if (streq(v->x.property.signature, "as"))
|
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return sd_bus_message_append_strv(reply, *(char***) userdata);
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|
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assert(signature_is_single(v->x.property.signature, false));
|
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assert(bus_type_is_basic(v->x.property.signature[0]));
|
|
|
|
switch (v->x.property.signature[0]) {
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|
|
|
case SD_BUS_TYPE_STRING:
|
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case SD_BUS_TYPE_SIGNATURE:
|
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p = strempty(*(char**) userdata);
|
|
break;
|
|
|
|
case SD_BUS_TYPE_OBJECT_PATH:
|
|
p = *(char**) userdata;
|
|
assert(p);
|
|
break;
|
|
|
|
default:
|
|
p = userdata;
|
|
break;
|
|
}
|
|
|
|
return sd_bus_message_append_basic(reply, v->x.property.signature[0], p);
|
|
}
|
|
|
|
static int invoke_property_set(
|
|
sd_bus *bus,
|
|
const sd_bus_vtable *v,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *value,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(v);
|
|
assert(path);
|
|
assert(interface);
|
|
assert(property);
|
|
assert(value);
|
|
|
|
if (v->x.property.set) {
|
|
r = v->x.property.set(bus, path, interface, property, value, userdata, error);
|
|
if (r < 0)
|
|
return r;
|
|
if (sd_bus_error_is_set(error))
|
|
return -sd_bus_error_get_errno(error);
|
|
return r;
|
|
}
|
|
|
|
/* Automatic handling if no callback is defined. */
|
|
|
|
assert(signature_is_single(v->x.property.signature, false));
|
|
assert(bus_type_is_basic(v->x.property.signature[0]));
|
|
|
|
switch (v->x.property.signature[0]) {
|
|
|
|
case SD_BUS_TYPE_STRING:
|
|
case SD_BUS_TYPE_OBJECT_PATH:
|
|
case SD_BUS_TYPE_SIGNATURE: {
|
|
const char *p;
|
|
char *n;
|
|
|
|
r = sd_bus_message_read_basic(value, v->x.property.signature[0], &p);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
n = strdup(p);
|
|
if (!n)
|
|
return -ENOMEM;
|
|
|
|
free(*(char**) userdata);
|
|
*(char**) userdata = n;
|
|
|
|
break;
|
|
}
|
|
|
|
default:
|
|
r = sd_bus_message_read_basic(value, v->x.property.signature[0], userdata);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
break;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int property_get_set_callbacks_run(
|
|
sd_bus *bus,
|
|
sd_bus_message *m,
|
|
struct vtable_member *c,
|
|
bool require_fallback,
|
|
bool is_get,
|
|
bool *found_object) {
|
|
|
|
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
|
|
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
|
|
void *u;
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(m);
|
|
assert(c);
|
|
assert(found_object);
|
|
|
|
if (require_fallback && !c->parent->is_fallback)
|
|
return 0;
|
|
|
|
r = vtable_property_get_userdata(bus, m->path, c, &u, &error);
|
|
if (r <= 0)
|
|
return bus_maybe_reply_error(m, r, &error);
|
|
if (bus->nodes_modified)
|
|
return 0;
|
|
|
|
*found_object = true;
|
|
|
|
r = sd_bus_message_new_method_return(m, &reply);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (is_get) {
|
|
/* Note that we do not protect against reexecution
|
|
* here (using the last_iteration check, see below),
|
|
* should the node tree have changed and we got called
|
|
* again. We assume that property Get() calls are
|
|
* ultimately without side-effects or if they aren't
|
|
* then at least idempotent. */
|
|
|
|
r = sd_bus_message_open_container(reply, 'v', c->vtable->x.property.signature);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
/* Note that we do not do an access check here. Read
|
|
* access to properties is always unrestricted, since
|
|
* PropertiesChanged signals broadcast contents
|
|
* anyway. */
|
|
|
|
r = invoke_property_get(bus, c->vtable, m->path, c->interface, c->member, reply, u, &error);
|
|
if (r < 0)
|
|
return bus_maybe_reply_error(m, r, &error);
|
|
|
|
if (bus->nodes_modified)
|
|
return 0;
|
|
|
|
r = sd_bus_message_close_container(reply);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
} else {
|
|
if (c->vtable->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY)
|
|
return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_PROPERTY_READ_ONLY, "Property '%s' is not writable.", c->member);
|
|
|
|
/* Avoid that we call the set routine more than once
|
|
* if the processing of this message got restarted
|
|
* because the node tree changed. */
|
|
if (c->last_iteration == bus->iteration_counter)
|
|
return 0;
|
|
|
|
c->last_iteration = bus->iteration_counter;
|
|
|
|
r = sd_bus_message_enter_container(m, 'v', c->vtable->x.property.signature);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = check_access(bus, m, c, &error);
|
|
if (r < 0)
|
|
return bus_maybe_reply_error(m, r, &error);
|
|
|
|
r = invoke_property_set(bus, c->vtable, m->path, c->interface, c->member, m, u, &error);
|
|
if (r < 0)
|
|
return bus_maybe_reply_error(m, r, &error);
|
|
|
|
if (bus->nodes_modified)
|
|
return 0;
|
|
|
|
r = sd_bus_message_exit_container(m);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
r = sd_bus_send(bus, reply, NULL);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int vtable_append_all_properties(
|
|
sd_bus *bus,
|
|
sd_bus_message *reply,
|
|
const char *path,
|
|
struct node_vtable *c,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
const sd_bus_vtable *v;
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(reply);
|
|
assert(path);
|
|
assert(c);
|
|
|
|
if (c->vtable[0].flags & SD_BUS_VTABLE_HIDDEN)
|
|
return 1;
|
|
|
|
for (v = c->vtable+1; v->type != _SD_BUS_VTABLE_END; v++) {
|
|
if (v->type != _SD_BUS_VTABLE_PROPERTY && v->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY)
|
|
continue;
|
|
|
|
if (v->flags & SD_BUS_VTABLE_HIDDEN)
|
|
continue;
|
|
|
|
r = sd_bus_message_open_container(reply, 'e', "sv");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_append(reply, "s", v->x.property.member);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_open_container(reply, 'v', v->x.property.signature);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = invoke_property_get(bus, v, path, c->interface, v->x.property.member, reply, vtable_property_convert_userdata(v, userdata), error);
|
|
if (r < 0)
|
|
return r;
|
|
if (bus->nodes_modified)
|
|
return 0;
|
|
|
|
r = sd_bus_message_close_container(reply);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_close_container(reply);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int property_get_all_callbacks_run(
|
|
sd_bus *bus,
|
|
sd_bus_message *m,
|
|
struct node_vtable *first,
|
|
bool require_fallback,
|
|
const char *iface,
|
|
bool *found_object) {
|
|
|
|
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
|
|
struct node_vtable *c;
|
|
bool found_interface;
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(m);
|
|
assert(found_object);
|
|
|
|
r = sd_bus_message_new_method_return(m, &reply);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_open_container(reply, 'a', "{sv}");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
found_interface = !iface ||
|
|
streq(iface, "org.freedesktop.DBus.Properties") ||
|
|
streq(iface, "org.freedesktop.DBus.Peer") ||
|
|
streq(iface, "org.freedesktop.DBus.Introspectable");
|
|
|
|
LIST_FOREACH(vtables, c, first) {
|
|
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
|
|
void *u;
|
|
|
|
if (require_fallback && !c->is_fallback)
|
|
continue;
|
|
|
|
r = node_vtable_get_userdata(bus, m->path, c, &u, &error);
|
|
if (r < 0)
|
|
return bus_maybe_reply_error(m, r, &error);
|
|
if (bus->nodes_modified)
|
|
return 0;
|
|
if (r == 0)
|
|
continue;
|
|
|
|
*found_object = true;
|
|
|
|
if (iface && !streq(c->interface, iface))
|
|
continue;
|
|
found_interface = true;
|
|
|
|
r = vtable_append_all_properties(bus, reply, m->path, c, u, &error);
|
|
if (r < 0)
|
|
return bus_maybe_reply_error(m, r, &error);
|
|
if (bus->nodes_modified)
|
|
return 0;
|
|
}
|
|
|
|
if (!found_interface) {
|
|
r = sd_bus_reply_method_errorf(
|
|
m,
|
|
SD_BUS_ERROR_UNKNOWN_INTERFACE,
|
|
"Unknown interface '%s'.", iface);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return 1;
|
|
}
|
|
|
|
r = sd_bus_message_close_container(reply);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_send(bus, reply, NULL);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static bool bus_node_with_object_manager(sd_bus *bus, struct node *n) {
|
|
assert(bus);
|
|
assert(n);
|
|
|
|
if (n->object_manager)
|
|
return true;
|
|
|
|
if (n->parent)
|
|
return bus_node_with_object_manager(bus, n->parent);
|
|
|
|
return false;
|
|
}
|
|
|
|
static bool bus_node_exists(
|
|
sd_bus *bus,
|
|
struct node *n,
|
|
const char *path,
|
|
bool require_fallback) {
|
|
|
|
struct node_vtable *c;
|
|
struct node_callback *k;
|
|
|
|
assert(bus);
|
|
assert(n);
|
|
assert(path);
|
|
|
|
/* Tests if there's anything attached directly to this node
|
|
* for the specified path */
|
|
|
|
LIST_FOREACH(callbacks, k, n->callbacks) {
|
|
if (require_fallback && !k->is_fallback)
|
|
continue;
|
|
|
|
return true;
|
|
}
|
|
|
|
LIST_FOREACH(vtables, c, n->vtables) {
|
|
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
|
|
|
|
if (require_fallback && !c->is_fallback)
|
|
continue;
|
|
|
|
if (node_vtable_get_userdata(bus, path, c, NULL, &error) > 0)
|
|
return true;
|
|
if (bus->nodes_modified)
|
|
return false;
|
|
}
|
|
|
|
return !require_fallback && (n->enumerators || n->object_manager);
|
|
}
|
|
|
|
static int process_introspect(
|
|
sd_bus *bus,
|
|
sd_bus_message *m,
|
|
struct node *n,
|
|
bool require_fallback,
|
|
bool *found_object) {
|
|
|
|
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
|
|
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
|
|
_cleanup_set_free_free_ Set *s = NULL;
|
|
const char *previous_interface = NULL;
|
|
struct introspect intro;
|
|
struct node_vtable *c;
|
|
bool empty;
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(m);
|
|
assert(n);
|
|
assert(found_object);
|
|
|
|
r = get_child_nodes(bus, m->path, n, &s, &error);
|
|
if (r < 0)
|
|
return bus_maybe_reply_error(m, r, &error);
|
|
if (bus->nodes_modified)
|
|
return 0;
|
|
|
|
r = introspect_begin(&intro);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = introspect_write_default_interfaces(&intro, bus_node_with_object_manager(bus, n));
|
|
if (r < 0)
|
|
return r;
|
|
|
|
empty = set_isempty(s);
|
|
|
|
LIST_FOREACH(vtables, c, n->vtables) {
|
|
if (require_fallback && !c->is_fallback)
|
|
continue;
|
|
|
|
r = node_vtable_get_userdata(bus, m->path, c, NULL, &error);
|
|
if (r < 0) {
|
|
r = bus_maybe_reply_error(m, r, &error);
|
|
goto finish;
|
|
}
|
|
if (bus->nodes_modified) {
|
|
r = 0;
|
|
goto finish;
|
|
}
|
|
if (r == 0)
|
|
continue;
|
|
|
|
empty = false;
|
|
|
|
if (c->vtable[0].flags & SD_BUS_VTABLE_HIDDEN)
|
|
continue;
|
|
|
|
if (!streq_ptr(previous_interface, c->interface)) {
|
|
|
|
if (previous_interface)
|
|
fputs(" </interface>\n", intro.f);
|
|
|
|
fprintf(intro.f, " <interface name=\"%s\">\n", c->interface);
|
|
}
|
|
|
|
r = introspect_write_interface(&intro, c->vtable);
|
|
if (r < 0)
|
|
goto finish;
|
|
|
|
previous_interface = c->interface;
|
|
}
|
|
|
|
if (previous_interface)
|
|
fputs(" </interface>\n", intro.f);
|
|
|
|
if (empty) {
|
|
/* Nothing?, let's see if we exist at all, and if not
|
|
* refuse to do anything */
|
|
r = bus_node_exists(bus, n, m->path, require_fallback);
|
|
if (r < 0)
|
|
return r;
|
|
if (bus->nodes_modified)
|
|
return 0;
|
|
if (r == 0)
|
|
goto finish;
|
|
}
|
|
|
|
*found_object = true;
|
|
|
|
r = introspect_write_child_nodes(&intro, s, m->path);
|
|
if (r < 0)
|
|
goto finish;
|
|
|
|
r = introspect_finish(&intro, bus, m, &reply);
|
|
if (r < 0)
|
|
goto finish;
|
|
|
|
r = sd_bus_send(bus, reply, NULL);
|
|
if (r < 0)
|
|
goto finish;
|
|
|
|
r = 1;
|
|
|
|
finish:
|
|
introspect_free(&intro);
|
|
return r;
|
|
}
|
|
|
|
static int object_manager_serialize_path(
|
|
sd_bus *bus,
|
|
sd_bus_message *reply,
|
|
const char *prefix,
|
|
const char *path,
|
|
bool require_fallback,
|
|
sd_bus_error *error) {
|
|
|
|
const char *previous_interface = NULL;
|
|
bool found_something = false;
|
|
struct node_vtable *i;
|
|
struct node *n;
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(reply);
|
|
assert(prefix);
|
|
assert(path);
|
|
assert(error);
|
|
|
|
n = hashmap_get(bus->nodes, prefix);
|
|
if (!n)
|
|
return 0;
|
|
|
|
LIST_FOREACH(vtables, i, n->vtables) {
|
|
void *u;
|
|
|
|
if (require_fallback && !i->is_fallback)
|
|
continue;
|
|
|
|
r = node_vtable_get_userdata(bus, path, i, &u, error);
|
|
if (r < 0)
|
|
return r;
|
|
if (bus->nodes_modified)
|
|
return 0;
|
|
if (r == 0)
|
|
continue;
|
|
|
|
if (!found_something) {
|
|
|
|
/* Open the object part */
|
|
|
|
r = sd_bus_message_open_container(reply, 'e', "oa{sa{sv}}");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_append(reply, "o", path);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_open_container(reply, 'a', "{sa{sv}}");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
found_something = true;
|
|
}
|
|
|
|
if (!streq_ptr(previous_interface, i->interface)) {
|
|
|
|
/* Maybe close the previous interface part */
|
|
|
|
if (previous_interface) {
|
|
r = sd_bus_message_close_container(reply);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_close_container(reply);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
/* Open the new interface part */
|
|
|
|
r = sd_bus_message_open_container(reply, 'e', "sa{sv}");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_append(reply, "s", i->interface);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_open_container(reply, 'a', "{sv}");
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
r = vtable_append_all_properties(bus, reply, path, i, u, error);
|
|
if (r < 0)
|
|
return r;
|
|
if (bus->nodes_modified)
|
|
return 0;
|
|
|
|
previous_interface = i->interface;
|
|
}
|
|
|
|
if (previous_interface) {
|
|
r = sd_bus_message_close_container(reply);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_close_container(reply);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
if (found_something) {
|
|
r = sd_bus_message_close_container(reply);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_close_container(reply);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int object_manager_serialize_path_and_fallbacks(
|
|
sd_bus *bus,
|
|
sd_bus_message *reply,
|
|
const char *path,
|
|
sd_bus_error *error) {
|
|
|
|
char *prefix;
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(reply);
|
|
assert(path);
|
|
assert(error);
|
|
|
|
/* First, add all vtables registered for this path */
|
|
r = object_manager_serialize_path(bus, reply, path, path, false, error);
|
|
if (r < 0)
|
|
return r;
|
|
if (bus->nodes_modified)
|
|
return 0;
|
|
|
|
/* Second, add fallback vtables registered for any of the prefixes */
|
|
prefix = alloca(strlen(path) + 1);
|
|
OBJECT_PATH_FOREACH_PREFIX(prefix, path) {
|
|
r = object_manager_serialize_path(bus, reply, prefix, path, true, error);
|
|
if (r < 0)
|
|
return r;
|
|
if (bus->nodes_modified)
|
|
return 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int process_get_managed_objects(
|
|
sd_bus *bus,
|
|
sd_bus_message *m,
|
|
struct node *n,
|
|
bool require_fallback,
|
|
bool *found_object) {
|
|
|
|
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
|
|
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
|
|
_cleanup_set_free_free_ Set *s = NULL;
|
|
bool empty;
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(m);
|
|
assert(n);
|
|
assert(found_object);
|
|
|
|
if (!bus_node_with_object_manager(bus, n))
|
|
return 0;
|
|
|
|
r = get_child_nodes(bus, m->path, n, &s, &error);
|
|
if (r < 0)
|
|
return r;
|
|
if (bus->nodes_modified)
|
|
return 0;
|
|
|
|
r = sd_bus_message_new_method_return(m, &reply);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_open_container(reply, 'a', "{oa{sa{sv}}}");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
empty = set_isempty(s);
|
|
if (empty) {
|
|
struct node_vtable *c;
|
|
|
|
/* Hmm, so we have no children? Then let's check
|
|
* whether we exist at all, i.e. whether at least one
|
|
* vtable exists. */
|
|
|
|
LIST_FOREACH(vtables, c, n->vtables) {
|
|
|
|
if (require_fallback && !c->is_fallback)
|
|
continue;
|
|
|
|
if (r < 0)
|
|
return r;
|
|
if (r == 0)
|
|
continue;
|
|
|
|
empty = false;
|
|
break;
|
|
}
|
|
|
|
if (empty)
|
|
return 0;
|
|
} else {
|
|
Iterator i;
|
|
char *path;
|
|
|
|
SET_FOREACH(path, s, i) {
|
|
r = object_manager_serialize_path_and_fallbacks(bus, reply, path, &error);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (bus->nodes_modified)
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
r = sd_bus_message_close_container(reply);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_send(bus, reply, NULL);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int object_find_and_run(
|
|
sd_bus *bus,
|
|
sd_bus_message *m,
|
|
const char *p,
|
|
bool require_fallback,
|
|
bool *found_object) {
|
|
|
|
struct node *n;
|
|
struct vtable_member vtable_key, *v;
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(m);
|
|
assert(p);
|
|
assert(found_object);
|
|
|
|
n = hashmap_get(bus->nodes, p);
|
|
if (!n)
|
|
return 0;
|
|
|
|
/* First, try object callbacks */
|
|
r = node_callbacks_run(bus, m, n->callbacks, require_fallback, found_object);
|
|
if (r != 0)
|
|
return r;
|
|
if (bus->nodes_modified)
|
|
return 0;
|
|
|
|
if (!m->interface || !m->member)
|
|
return 0;
|
|
|
|
/* Then, look for a known method */
|
|
vtable_key.path = (char*) p;
|
|
vtable_key.interface = m->interface;
|
|
vtable_key.member = m->member;
|
|
|
|
v = hashmap_get(bus->vtable_methods, &vtable_key);
|
|
if (v) {
|
|
r = method_callbacks_run(bus, m, v, require_fallback, found_object);
|
|
if (r != 0)
|
|
return r;
|
|
if (bus->nodes_modified)
|
|
return 0;
|
|
}
|
|
|
|
/* Then, look for a known property */
|
|
if (streq(m->interface, "org.freedesktop.DBus.Properties")) {
|
|
bool get = false;
|
|
|
|
get = streq(m->member, "Get");
|
|
|
|
if (get || streq(m->member, "Set")) {
|
|
|
|
r = sd_bus_message_rewind(m, true);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
vtable_key.path = (char*) p;
|
|
|
|
r = sd_bus_message_read(m, "ss", &vtable_key.interface, &vtable_key.member);
|
|
if (r < 0)
|
|
return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected interface and member parameters");
|
|
|
|
v = hashmap_get(bus->vtable_properties, &vtable_key);
|
|
if (v) {
|
|
r = property_get_set_callbacks_run(bus, m, v, require_fallback, get, found_object);
|
|
if (r != 0)
|
|
return r;
|
|
}
|
|
|
|
} else if (streq(m->member, "GetAll")) {
|
|
const char *iface;
|
|
|
|
r = sd_bus_message_rewind(m, true);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_read(m, "s", &iface);
|
|
if (r < 0)
|
|
return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected interface parameter");
|
|
|
|
if (iface[0] == 0)
|
|
iface = NULL;
|
|
|
|
r = property_get_all_callbacks_run(bus, m, n->vtables, require_fallback, iface, found_object);
|
|
if (r != 0)
|
|
return r;
|
|
}
|
|
|
|
} else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Introspectable", "Introspect")) {
|
|
|
|
if (!isempty(sd_bus_message_get_signature(m, true)))
|
|
return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected no parameters");
|
|
|
|
r = process_introspect(bus, m, n, require_fallback, found_object);
|
|
if (r != 0)
|
|
return r;
|
|
|
|
} else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.ObjectManager", "GetManagedObjects")) {
|
|
|
|
if (!isempty(sd_bus_message_get_signature(m, true)))
|
|
return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected no parameters");
|
|
|
|
r = process_get_managed_objects(bus, m, n, require_fallback, found_object);
|
|
if (r != 0)
|
|
return r;
|
|
}
|
|
|
|
if (bus->nodes_modified)
|
|
return 0;
|
|
|
|
if (!*found_object) {
|
|
r = bus_node_exists(bus, n, m->path, require_fallback);
|
|
if (r < 0)
|
|
return r;
|
|
if (r > 0)
|
|
*found_object = true;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int bus_process_object(sd_bus *bus, sd_bus_message *m) {
|
|
int r;
|
|
size_t pl;
|
|
bool found_object = false;
|
|
|
|
assert(bus);
|
|
assert(m);
|
|
|
|
if (m->header->type != SD_BUS_MESSAGE_METHOD_CALL)
|
|
return 0;
|
|
|
|
if (hashmap_isempty(bus->nodes))
|
|
return 0;
|
|
|
|
/* Never respond to broadcast messages */
|
|
if (bus->bus_client && !m->destination)
|
|
return 0;
|
|
|
|
assert(m->path);
|
|
assert(m->member);
|
|
|
|
pl = strlen(m->path);
|
|
do {
|
|
char prefix[pl+1];
|
|
|
|
bus->nodes_modified = false;
|
|
|
|
r = object_find_and_run(bus, m, m->path, false, &found_object);
|
|
if (r != 0)
|
|
return r;
|
|
|
|
/* Look for fallback prefixes */
|
|
OBJECT_PATH_FOREACH_PREFIX(prefix, m->path) {
|
|
|
|
if (bus->nodes_modified)
|
|
break;
|
|
|
|
r = object_find_and_run(bus, m, prefix, true, &found_object);
|
|
if (r != 0)
|
|
return r;
|
|
}
|
|
|
|
} while (bus->nodes_modified);
|
|
|
|
if (!found_object)
|
|
return 0;
|
|
|
|
if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Properties", "Get") ||
|
|
sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Properties", "Set"))
|
|
r = sd_bus_reply_method_errorf(
|
|
m,
|
|
SD_BUS_ERROR_UNKNOWN_PROPERTY,
|
|
"Unknown property or interface.");
|
|
else
|
|
r = sd_bus_reply_method_errorf(
|
|
m,
|
|
SD_BUS_ERROR_UNKNOWN_METHOD,
|
|
"Unknown method '%s' or interface '%s'.", m->member, m->interface);
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static struct node *bus_node_allocate(sd_bus *bus, const char *path) {
|
|
struct node *n, *parent;
|
|
const char *e;
|
|
_cleanup_free_ char *s = NULL;
|
|
char *p;
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(path);
|
|
assert(path[0] == '/');
|
|
|
|
n = hashmap_get(bus->nodes, path);
|
|
if (n)
|
|
return n;
|
|
|
|
r = hashmap_ensure_allocated(&bus->nodes, string_hash_func, string_compare_func);
|
|
if (r < 0)
|
|
return NULL;
|
|
|
|
s = strdup(path);
|
|
if (!s)
|
|
return NULL;
|
|
|
|
if (streq(path, "/"))
|
|
parent = NULL;
|
|
else {
|
|
e = strrchr(path, '/');
|
|
assert(e);
|
|
|
|
p = strndupa(path, MAX(1, path - e));
|
|
|
|
parent = bus_node_allocate(bus, p);
|
|
if (!parent)
|
|
return NULL;
|
|
}
|
|
|
|
n = new0(struct node, 1);
|
|
if (!n)
|
|
return NULL;
|
|
|
|
n->parent = parent;
|
|
n->path = s;
|
|
s = NULL; /* do not free */
|
|
|
|
r = hashmap_put(bus->nodes, n->path, n);
|
|
if (r < 0) {
|
|
free(n->path);
|
|
free(n);
|
|
return NULL;
|
|
}
|
|
|
|
if (parent)
|
|
LIST_PREPEND(siblings, parent->child, n);
|
|
|
|
return n;
|
|
}
|
|
|
|
static void bus_node_gc(sd_bus *b, struct node *n) {
|
|
assert(b);
|
|
|
|
if (!n)
|
|
return;
|
|
|
|
if (n->child ||
|
|
n->callbacks ||
|
|
n->vtables ||
|
|
n->enumerators ||
|
|
n->object_manager)
|
|
return;
|
|
|
|
assert(hashmap_remove(b->nodes, n->path) == n);
|
|
|
|
if (n->parent)
|
|
LIST_REMOVE(siblings, n->parent->child, n);
|
|
|
|
free(n->path);
|
|
bus_node_gc(b, n->parent);
|
|
free(n);
|
|
}
|
|
|
|
static int bus_add_object(
|
|
sd_bus *bus,
|
|
bool fallback,
|
|
const char *path,
|
|
sd_bus_message_handler_t callback,
|
|
void *userdata) {
|
|
|
|
struct node_callback *c;
|
|
struct node *n;
|
|
int r;
|
|
|
|
assert_return(bus, -EINVAL);
|
|
assert_return(object_path_is_valid(path), -EINVAL);
|
|
assert_return(callback, -EINVAL);
|
|
assert_return(!bus_pid_changed(bus), -ECHILD);
|
|
|
|
n = bus_node_allocate(bus, path);
|
|
if (!n)
|
|
return -ENOMEM;
|
|
|
|
c = new0(struct node_callback, 1);
|
|
if (!c) {
|
|
r = -ENOMEM;
|
|
goto fail;
|
|
}
|
|
|
|
c->node = n;
|
|
c->callback = callback;
|
|
c->userdata = userdata;
|
|
c->is_fallback = fallback;
|
|
|
|
LIST_PREPEND(callbacks, n->callbacks, c);
|
|
bus->nodes_modified = true;
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
free(c);
|
|
bus_node_gc(bus, n);
|
|
return r;
|
|
}
|
|
|
|
static int bus_remove_object(
|
|
sd_bus *bus,
|
|
bool fallback,
|
|
const char *path,
|
|
sd_bus_message_handler_t callback,
|
|
void *userdata) {
|
|
|
|
struct node_callback *c;
|
|
struct node *n;
|
|
|
|
assert_return(bus, -EINVAL);
|
|
assert_return(object_path_is_valid(path), -EINVAL);
|
|
assert_return(callback, -EINVAL);
|
|
assert_return(!bus_pid_changed(bus), -ECHILD);
|
|
|
|
n = hashmap_get(bus->nodes, path);
|
|
if (!n)
|
|
return 0;
|
|
|
|
LIST_FOREACH(callbacks, c, n->callbacks)
|
|
if (c->callback == callback && c->userdata == userdata && c->is_fallback == fallback)
|
|
break;
|
|
if (!c)
|
|
return 0;
|
|
|
|
LIST_REMOVE(callbacks, n->callbacks, c);
|
|
free(c);
|
|
|
|
bus_node_gc(bus, n);
|
|
bus->nodes_modified = true;
|
|
|
|
return 1;
|
|
}
|
|
|
|
_public_ int sd_bus_add_object(sd_bus *bus,
|
|
const char *path,
|
|
sd_bus_message_handler_t callback,
|
|
void *userdata) {
|
|
|
|
return bus_add_object(bus, false, path, callback, userdata);
|
|
}
|
|
|
|
_public_ int sd_bus_remove_object(sd_bus *bus,
|
|
const char *path,
|
|
sd_bus_message_handler_t callback,
|
|
void *userdata) {
|
|
|
|
return bus_remove_object(bus, false, path, callback, userdata);
|
|
}
|
|
|
|
_public_ int sd_bus_add_fallback(sd_bus *bus,
|
|
const char *prefix,
|
|
sd_bus_message_handler_t callback,
|
|
void *userdata) {
|
|
|
|
return bus_add_object(bus, true, prefix, callback, userdata);
|
|
}
|
|
|
|
_public_ int sd_bus_remove_fallback(sd_bus *bus,
|
|
const char *prefix,
|
|
sd_bus_message_handler_t callback,
|
|
void *userdata) {
|
|
|
|
return bus_remove_object(bus, true, prefix, callback, userdata);
|
|
}
|
|
|
|
static void free_node_vtable(sd_bus *bus, struct node_vtable *w) {
|
|
assert(bus);
|
|
|
|
if (!w)
|
|
return;
|
|
|
|
if (w->interface && w->node && w->vtable) {
|
|
const sd_bus_vtable *v;
|
|
|
|
for (v = w->vtable; v->type != _SD_BUS_VTABLE_END; v++) {
|
|
struct vtable_member *x = NULL;
|
|
|
|
switch (v->type) {
|
|
|
|
case _SD_BUS_VTABLE_METHOD: {
|
|
struct vtable_member key;
|
|
|
|
key.path = w->node->path;
|
|
key.interface = w->interface;
|
|
key.member = v->x.method.member;
|
|
|
|
x = hashmap_remove(bus->vtable_methods, &key);
|
|
break;
|
|
}
|
|
|
|
case _SD_BUS_VTABLE_PROPERTY:
|
|
case _SD_BUS_VTABLE_WRITABLE_PROPERTY: {
|
|
struct vtable_member key;
|
|
|
|
key.path = w->node->path;
|
|
key.interface = w->interface;
|
|
key.member = v->x.property.member;
|
|
x = hashmap_remove(bus->vtable_properties, &key);
|
|
break;
|
|
}}
|
|
|
|
free(x);
|
|
}
|
|
}
|
|
|
|
free(w->interface);
|
|
free(w);
|
|
}
|
|
|
|
static unsigned vtable_member_hash_func(const void *a) {
|
|
const struct vtable_member *m = a;
|
|
|
|
assert(m);
|
|
|
|
return
|
|
string_hash_func(m->path) ^
|
|
string_hash_func(m->interface) ^
|
|
string_hash_func(m->member);
|
|
}
|
|
|
|
static int vtable_member_compare_func(const void *a, const void *b) {
|
|
const struct vtable_member *x = a, *y = b;
|
|
int r;
|
|
|
|
assert(x);
|
|
assert(y);
|
|
|
|
r = strcmp(x->path, y->path);
|
|
if (r != 0)
|
|
return r;
|
|
|
|
r = strcmp(x->interface, y->interface);
|
|
if (r != 0)
|
|
return r;
|
|
|
|
return strcmp(x->member, y->member);
|
|
}
|
|
|
|
static int add_object_vtable_internal(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const sd_bus_vtable *vtable,
|
|
bool fallback,
|
|
sd_bus_object_find_t find,
|
|
void *userdata) {
|
|
|
|
struct node_vtable *c = NULL, *i, *existing = NULL;
|
|
const sd_bus_vtable *v;
|
|
struct node *n;
|
|
int r;
|
|
|
|
assert_return(bus, -EINVAL);
|
|
assert_return(object_path_is_valid(path), -EINVAL);
|
|
assert_return(interface_name_is_valid(interface), -EINVAL);
|
|
assert_return(vtable, -EINVAL);
|
|
assert_return(vtable[0].type == _SD_BUS_VTABLE_START, -EINVAL);
|
|
assert_return(vtable[0].x.start.element_size == sizeof(struct sd_bus_vtable), -EINVAL);
|
|
assert_return(!bus_pid_changed(bus), -ECHILD);
|
|
assert_return(!streq(interface, "org.freedesktop.DBus.Properties") &&
|
|
!streq(interface, "org.freedesktop.DBus.Introspectable") &&
|
|
!streq(interface, "org.freedesktop.DBus.Peer") &&
|
|
!streq(interface, "org.freedesktop.DBus.ObjectManager"), -EINVAL);
|
|
|
|
r = hashmap_ensure_allocated(&bus->vtable_methods, vtable_member_hash_func, vtable_member_compare_func);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = hashmap_ensure_allocated(&bus->vtable_properties, vtable_member_hash_func, vtable_member_compare_func);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
n = bus_node_allocate(bus, path);
|
|
if (!n)
|
|
return -ENOMEM;
|
|
|
|
LIST_FOREACH(vtables, i, n->vtables) {
|
|
if (i->is_fallback != fallback) {
|
|
r = -EPROTOTYPE;
|
|
goto fail;
|
|
}
|
|
|
|
if (streq(i->interface, interface)) {
|
|
|
|
if (i->vtable == vtable) {
|
|
r = -EEXIST;
|
|
goto fail;
|
|
}
|
|
|
|
existing = i;
|
|
}
|
|
}
|
|
|
|
c = new0(struct node_vtable, 1);
|
|
if (!c) {
|
|
r = -ENOMEM;
|
|
goto fail;
|
|
}
|
|
|
|
c->node = n;
|
|
c->is_fallback = fallback;
|
|
c->vtable = vtable;
|
|
c->userdata = userdata;
|
|
c->find = find;
|
|
|
|
c->interface = strdup(interface);
|
|
if (!c->interface) {
|
|
r = -ENOMEM;
|
|
goto fail;
|
|
}
|
|
|
|
for (v = c->vtable+1; v->type != _SD_BUS_VTABLE_END; v++) {
|
|
|
|
switch (v->type) {
|
|
|
|
case _SD_BUS_VTABLE_METHOD: {
|
|
struct vtable_member *m;
|
|
|
|
if (!member_name_is_valid(v->x.method.member) ||
|
|
!signature_is_valid(strempty(v->x.method.signature), false) ||
|
|
!signature_is_valid(strempty(v->x.method.result), false) ||
|
|
!(v->x.method.handler || (isempty(v->x.method.signature) && isempty(v->x.method.result))) ||
|
|
v->flags & (SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE|SD_BUS_VTABLE_PROPERTY_INVALIDATE_ONLY)) {
|
|
r = -EINVAL;
|
|
goto fail;
|
|
}
|
|
|
|
m = new0(struct vtable_member, 1);
|
|
if (!m) {
|
|
r = -ENOMEM;
|
|
goto fail;
|
|
}
|
|
|
|
m->parent = c;
|
|
m->path = n->path;
|
|
m->interface = c->interface;
|
|
m->member = v->x.method.member;
|
|
m->vtable = v;
|
|
|
|
r = hashmap_put(bus->vtable_methods, m, m);
|
|
if (r < 0) {
|
|
free(m);
|
|
goto fail;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
case _SD_BUS_VTABLE_WRITABLE_PROPERTY:
|
|
|
|
if (!(v->x.property.set || bus_type_is_basic(v->x.property.signature[0]))) {
|
|
r = -EINVAL;
|
|
goto fail;
|
|
}
|
|
|
|
/* Fall through */
|
|
|
|
case _SD_BUS_VTABLE_PROPERTY: {
|
|
struct vtable_member *m;
|
|
|
|
if (!member_name_is_valid(v->x.property.member) ||
|
|
!signature_is_single(v->x.property.signature, false) ||
|
|
!(v->x.property.get || bus_type_is_basic(v->x.property.signature[0]) || streq(v->x.property.signature, "as")) ||
|
|
v->flags & SD_BUS_VTABLE_METHOD_NO_REPLY ||
|
|
(v->flags & SD_BUS_VTABLE_PROPERTY_INVALIDATE_ONLY && !(v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE)) ||
|
|
(v->flags & SD_BUS_VTABLE_UNPRIVILEGED && v->type == _SD_BUS_VTABLE_PROPERTY)) {
|
|
r = -EINVAL;
|
|
goto fail;
|
|
}
|
|
|
|
|
|
m = new0(struct vtable_member, 1);
|
|
if (!m) {
|
|
r = -ENOMEM;
|
|
goto fail;
|
|
}
|
|
|
|
m->parent = c;
|
|
m->path = n->path;
|
|
m->interface = c->interface;
|
|
m->member = v->x.property.member;
|
|
m->vtable = v;
|
|
|
|
r = hashmap_put(bus->vtable_properties, m, m);
|
|
if (r < 0) {
|
|
free(m);
|
|
goto fail;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
case _SD_BUS_VTABLE_SIGNAL:
|
|
|
|
if (!member_name_is_valid(v->x.signal.member) ||
|
|
!signature_is_valid(strempty(v->x.signal.signature), false) ||
|
|
v->flags & SD_BUS_VTABLE_UNPRIVILEGED) {
|
|
r = -EINVAL;
|
|
goto fail;
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
|
r = -EINVAL;
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
LIST_INSERT_AFTER(vtables, n->vtables, existing, c);
|
|
bus->nodes_modified = true;
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
if (c)
|
|
free_node_vtable(bus, c);
|
|
|
|
bus_node_gc(bus, n);
|
|
return r;
|
|
}
|
|
|
|
static int remove_object_vtable_internal(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const sd_bus_vtable *vtable,
|
|
bool fallback,
|
|
sd_bus_object_find_t find,
|
|
void *userdata) {
|
|
|
|
struct node_vtable *c;
|
|
struct node *n;
|
|
|
|
assert_return(bus, -EINVAL);
|
|
assert_return(object_path_is_valid(path), -EINVAL);
|
|
assert_return(interface_name_is_valid(interface), -EINVAL);
|
|
assert_return(!bus_pid_changed(bus), -ECHILD);
|
|
|
|
n = hashmap_get(bus->nodes, path);
|
|
if (!n)
|
|
return 0;
|
|
|
|
LIST_FOREACH(vtables, c, n->vtables)
|
|
if (streq(c->interface, interface) &&
|
|
c->is_fallback == fallback &&
|
|
c->vtable == vtable &&
|
|
c->find == find &&
|
|
c->userdata == userdata)
|
|
break;
|
|
|
|
if (!c)
|
|
return 0;
|
|
|
|
LIST_REMOVE(vtables, n->vtables, c);
|
|
|
|
free_node_vtable(bus, c);
|
|
bus_node_gc(bus, n);
|
|
|
|
bus->nodes_modified = true;
|
|
|
|
return 1;
|
|
}
|
|
|
|
_public_ int sd_bus_add_object_vtable(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const sd_bus_vtable *vtable,
|
|
void *userdata) {
|
|
|
|
return add_object_vtable_internal(bus, path, interface, vtable, false, NULL, userdata);
|
|
}
|
|
|
|
_public_ int sd_bus_remove_object_vtable(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const sd_bus_vtable *vtable,
|
|
void *userdata) {
|
|
|
|
return remove_object_vtable_internal(bus, path, interface, vtable, false, NULL, userdata);
|
|
}
|
|
|
|
_public_ int sd_bus_add_fallback_vtable(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const sd_bus_vtable *vtable,
|
|
sd_bus_object_find_t find,
|
|
void *userdata) {
|
|
|
|
return add_object_vtable_internal(bus, path, interface, vtable, true, find, userdata);
|
|
}
|
|
|
|
_public_ int sd_bus_remove_fallback_vtable(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const sd_bus_vtable *vtable,
|
|
sd_bus_object_find_t find,
|
|
void *userdata) {
|
|
|
|
return remove_object_vtable_internal(bus, path, interface, vtable, true, find, userdata);
|
|
}
|
|
|
|
_public_ int sd_bus_add_node_enumerator(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
sd_bus_node_enumerator_t callback,
|
|
void *userdata) {
|
|
|
|
struct node_enumerator *c;
|
|
struct node *n;
|
|
int r;
|
|
|
|
assert_return(bus, -EINVAL);
|
|
assert_return(object_path_is_valid(path), -EINVAL);
|
|
assert_return(callback, -EINVAL);
|
|
assert_return(!bus_pid_changed(bus), -ECHILD);
|
|
|
|
n = bus_node_allocate(bus, path);
|
|
if (!n)
|
|
return -ENOMEM;
|
|
|
|
c = new0(struct node_enumerator, 1);
|
|
if (!c) {
|
|
r = -ENOMEM;
|
|
goto fail;
|
|
}
|
|
|
|
c->node = n;
|
|
c->callback = callback;
|
|
c->userdata = userdata;
|
|
|
|
LIST_PREPEND(enumerators, n->enumerators, c);
|
|
|
|
bus->nodes_modified = true;
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
free(c);
|
|
bus_node_gc(bus, n);
|
|
return r;
|
|
}
|
|
|
|
_public_ int sd_bus_remove_node_enumerator(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
sd_bus_node_enumerator_t callback,
|
|
void *userdata) {
|
|
|
|
struct node_enumerator *c;
|
|
struct node *n;
|
|
|
|
assert_return(bus, -EINVAL);
|
|
assert_return(object_path_is_valid(path), -EINVAL);
|
|
assert_return(callback, -EINVAL);
|
|
assert_return(!bus_pid_changed(bus), -ECHILD);
|
|
|
|
n = hashmap_get(bus->nodes, path);
|
|
if (!n)
|
|
return 0;
|
|
|
|
LIST_FOREACH(enumerators, c, n->enumerators)
|
|
if (c->callback == callback && c->userdata == userdata)
|
|
break;
|
|
|
|
if (!c)
|
|
return 0;
|
|
|
|
LIST_REMOVE(enumerators, n->enumerators, c);
|
|
free(c);
|
|
|
|
bus_node_gc(bus, n);
|
|
|
|
bus->nodes_modified = true;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int emit_properties_changed_on_interface(
|
|
sd_bus *bus,
|
|
const char *prefix,
|
|
const char *path,
|
|
const char *interface,
|
|
bool require_fallback,
|
|
char **names) {
|
|
|
|
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
|
|
_cleanup_bus_message_unref_ sd_bus_message *m = NULL;
|
|
bool has_invalidating = false, has_changing = false;
|
|
struct vtable_member key = {};
|
|
struct node_vtable *c;
|
|
struct node *n;
|
|
char **property;
|
|
void *u = NULL;
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(prefix);
|
|
assert(path);
|
|
assert(interface);
|
|
|
|
n = hashmap_get(bus->nodes, prefix);
|
|
if (!n)
|
|
return 0;
|
|
|
|
r = sd_bus_message_new_signal(bus, path, "org.freedesktop.DBus.Properties", "PropertiesChanged", &m);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_append(m, "s", interface);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_open_container(m, 'a', "{sv}");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
key.path = prefix;
|
|
key.interface = interface;
|
|
|
|
LIST_FOREACH(vtables, c, n->vtables) {
|
|
if (require_fallback && !c->is_fallback)
|
|
continue;
|
|
|
|
if (!streq(c->interface, interface))
|
|
continue;
|
|
|
|
r = node_vtable_get_userdata(bus, path, c, &u, &error);
|
|
if (r < 0)
|
|
return r;
|
|
if (bus->nodes_modified)
|
|
return 0;
|
|
if (r == 0)
|
|
continue;
|
|
|
|
STRV_FOREACH(property, names) {
|
|
struct vtable_member *v;
|
|
|
|
assert_return(member_name_is_valid(*property), -EINVAL);
|
|
|
|
key.member = *property;
|
|
v = hashmap_get(bus->vtable_properties, &key);
|
|
if (!v)
|
|
return -ENOENT;
|
|
|
|
/* If there are two vtables for the same
|
|
* interface, let's handle this property when
|
|
* we come to that vtable. */
|
|
if (c != v->parent)
|
|
continue;
|
|
|
|
assert_return(v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE, -EDOM);
|
|
|
|
if (v->vtable->flags & SD_BUS_VTABLE_PROPERTY_INVALIDATE_ONLY) {
|
|
has_invalidating = true;
|
|
continue;
|
|
}
|
|
|
|
has_changing = true;
|
|
|
|
r = sd_bus_message_open_container(m, 'e', "sv");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_append(m, "s", *property);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_open_container(m, 'v', v->vtable->x.property.signature);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = invoke_property_get(bus, v->vtable, m->path, interface, *property, m, vtable_property_convert_userdata(v->vtable, u), &error);
|
|
if (r < 0)
|
|
return r;
|
|
if (bus->nodes_modified)
|
|
return 0;
|
|
|
|
r = sd_bus_message_close_container(m);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_close_container(m);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
}
|
|
|
|
if (!has_invalidating && !has_changing)
|
|
return 0;
|
|
|
|
r = sd_bus_message_close_container(m);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_open_container(m, 'a', "s");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (has_invalidating) {
|
|
LIST_FOREACH(vtables, c, n->vtables) {
|
|
if (require_fallback && !c->is_fallback)
|
|
continue;
|
|
|
|
if (!streq(c->interface, interface))
|
|
continue;
|
|
|
|
r = node_vtable_get_userdata(bus, path, c, &u, &error);
|
|
if (r < 0)
|
|
return r;
|
|
if (bus->nodes_modified)
|
|
return 0;
|
|
if (r == 0)
|
|
continue;
|
|
|
|
STRV_FOREACH(property, names) {
|
|
struct vtable_member *v;
|
|
|
|
key.member = *property;
|
|
assert_se(v = hashmap_get(bus->vtable_properties, &key));
|
|
assert(c == v->parent);
|
|
|
|
if (!(v->vtable->flags & SD_BUS_VTABLE_PROPERTY_INVALIDATE_ONLY))
|
|
continue;
|
|
|
|
r = sd_bus_message_append(m, "s", *property);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
}
|
|
}
|
|
|
|
r = sd_bus_message_close_container(m);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_send(bus, m, NULL);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return 1;
|
|
}
|
|
|
|
_public_ int sd_bus_emit_properties_changed_strv(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
char **names) {
|
|
|
|
BUS_DONT_DESTROY(bus);
|
|
char *prefix;
|
|
int r;
|
|
|
|
assert_return(bus, -EINVAL);
|
|
assert_return(object_path_is_valid(path), -EINVAL);
|
|
assert_return(interface_name_is_valid(interface), -EINVAL);
|
|
assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
|
|
assert_return(!bus_pid_changed(bus), -ECHILD);
|
|
|
|
if (strv_isempty(names))
|
|
return 0;
|
|
|
|
do {
|
|
bus->nodes_modified = false;
|
|
|
|
r = emit_properties_changed_on_interface(bus, path, path, interface, false, names);
|
|
if (r != 0)
|
|
return r;
|
|
if (bus->nodes_modified)
|
|
continue;
|
|
|
|
prefix = alloca(strlen(path) + 1);
|
|
OBJECT_PATH_FOREACH_PREFIX(prefix, path) {
|
|
r = emit_properties_changed_on_interface(bus, prefix, path, interface, true, names);
|
|
if (r != 0)
|
|
return r;
|
|
if (bus->nodes_modified)
|
|
break;
|
|
}
|
|
|
|
} while (bus->nodes_modified);
|
|
|
|
return -ENOENT;
|
|
}
|
|
|
|
_public_ int sd_bus_emit_properties_changed(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *name, ...) {
|
|
|
|
char **names;
|
|
|
|
assert_return(bus, -EINVAL);
|
|
assert_return(object_path_is_valid(path), -EINVAL);
|
|
assert_return(interface_name_is_valid(interface), -EINVAL);
|
|
assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
|
|
assert_return(!bus_pid_changed(bus), -ECHILD);
|
|
|
|
if (!name)
|
|
return 0;
|
|
|
|
names = strv_from_stdarg_alloca(name);
|
|
|
|
return sd_bus_emit_properties_changed_strv(bus, path, interface, names);
|
|
}
|
|
|
|
static int interfaces_added_append_one_prefix(
|
|
sd_bus *bus,
|
|
sd_bus_message *m,
|
|
const char *prefix,
|
|
const char *path,
|
|
const char *interface,
|
|
bool require_fallback) {
|
|
|
|
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
|
|
bool found_interface = false;
|
|
struct node_vtable *c;
|
|
struct node *n;
|
|
void *u = NULL;
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(m);
|
|
assert(prefix);
|
|
assert(path);
|
|
assert(interface);
|
|
|
|
n = hashmap_get(bus->nodes, prefix);
|
|
if (!n)
|
|
return 0;
|
|
|
|
LIST_FOREACH(vtables, c, n->vtables) {
|
|
if (require_fallback && !c->is_fallback)
|
|
continue;
|
|
|
|
if (!streq(c->interface, interface))
|
|
continue;
|
|
|
|
r = node_vtable_get_userdata(bus, path, c, &u, &error);
|
|
if (r < 0)
|
|
return r;
|
|
if (bus->nodes_modified)
|
|
return 0;
|
|
if (r == 0)
|
|
continue;
|
|
|
|
if (!found_interface) {
|
|
r = sd_bus_message_append_basic(m, 's', interface);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_open_container(m, 'a', "{sv}");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
found_interface = true;
|
|
}
|
|
|
|
r = vtable_append_all_properties(bus, m, path, c, u, &error);
|
|
if (r < 0)
|
|
return r;
|
|
if (bus->nodes_modified)
|
|
return 0;
|
|
}
|
|
|
|
if (found_interface) {
|
|
r = sd_bus_message_close_container(m);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
return found_interface;
|
|
}
|
|
|
|
static int interfaces_added_append_one(
|
|
sd_bus *bus,
|
|
sd_bus_message *m,
|
|
const char *path,
|
|
const char *interface) {
|
|
|
|
char *prefix;
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(m);
|
|
assert(path);
|
|
assert(interface);
|
|
|
|
r = interfaces_added_append_one_prefix(bus, m, path, path, interface, false);
|
|
if (r != 0)
|
|
return r;
|
|
if (bus->nodes_modified)
|
|
return 0;
|
|
|
|
prefix = alloca(strlen(path) + 1);
|
|
OBJECT_PATH_FOREACH_PREFIX(prefix, path) {
|
|
r = interfaces_added_append_one_prefix(bus, m, prefix, path, interface, true);
|
|
if (r != 0)
|
|
return r;
|
|
if (bus->nodes_modified)
|
|
return 0;
|
|
}
|
|
|
|
return -ENOENT;
|
|
}
|
|
|
|
_public_ int sd_bus_emit_interfaces_added_strv(sd_bus *bus, const char *path, char **interfaces) {
|
|
BUS_DONT_DESTROY(bus);
|
|
|
|
_cleanup_bus_message_unref_ sd_bus_message *m = NULL;
|
|
char **i;
|
|
int r;
|
|
|
|
assert_return(bus, -EINVAL);
|
|
assert_return(object_path_is_valid(path), -EINVAL);
|
|
assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
|
|
assert_return(!bus_pid_changed(bus), -ECHILD);
|
|
|
|
if (strv_isempty(interfaces))
|
|
return 0;
|
|
|
|
do {
|
|
bus->nodes_modified = false;
|
|
|
|
if (m)
|
|
m = sd_bus_message_unref(m);
|
|
|
|
r = sd_bus_message_new_signal(bus, path, "org.freedesktop.DBus.ObjectManager", "InterfacesAdded", &m);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_append_basic(m, 'o', path);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_open_container(m, 'a', "{sa{sv}}");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
STRV_FOREACH(i, interfaces) {
|
|
assert_return(interface_name_is_valid(*i), -EINVAL);
|
|
|
|
r = sd_bus_message_open_container(m, 'e', "sa{sv}");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = interfaces_added_append_one(bus, m, path, *i);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (bus->nodes_modified)
|
|
break;
|
|
|
|
r = sd_bus_message_close_container(m);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
if (bus->nodes_modified)
|
|
continue;
|
|
|
|
r = sd_bus_message_close_container(m);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
} while (bus->nodes_modified);
|
|
|
|
return sd_bus_send(bus, m, NULL);
|
|
}
|
|
|
|
_public_ int sd_bus_emit_interfaces_added(sd_bus *bus, const char *path, const char *interface, ...) {
|
|
char **interfaces;
|
|
|
|
assert_return(bus, -EINVAL);
|
|
assert_return(object_path_is_valid(path), -EINVAL);
|
|
assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
|
|
assert_return(!bus_pid_changed(bus), -ECHILD);
|
|
|
|
interfaces = strv_from_stdarg_alloca(interface);
|
|
|
|
return sd_bus_emit_interfaces_added_strv(bus, path, interfaces);
|
|
}
|
|
|
|
_public_ int sd_bus_emit_interfaces_removed_strv(sd_bus *bus, const char *path, char **interfaces) {
|
|
_cleanup_bus_message_unref_ sd_bus_message *m = NULL;
|
|
int r;
|
|
|
|
assert_return(bus, -EINVAL);
|
|
assert_return(object_path_is_valid(path), -EINVAL);
|
|
assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
|
|
assert_return(!bus_pid_changed(bus), -ECHILD);
|
|
|
|
if (strv_isempty(interfaces))
|
|
return 0;
|
|
|
|
r = sd_bus_message_new_signal(bus, path, "org.freedesktop.DBus.ObjectManager", "InterfacesRemoved", &m);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_append_basic(m, 'o', path);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_append_strv(m, interfaces);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return sd_bus_send(bus, m, NULL);
|
|
}
|
|
|
|
_public_ int sd_bus_emit_interfaces_removed(sd_bus *bus, const char *path, const char *interface, ...) {
|
|
char **interfaces;
|
|
|
|
assert_return(bus, -EINVAL);
|
|
assert_return(object_path_is_valid(path), -EINVAL);
|
|
assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
|
|
assert_return(!bus_pid_changed(bus), -ECHILD);
|
|
|
|
interfaces = strv_from_stdarg_alloca(interface);
|
|
|
|
return sd_bus_emit_interfaces_removed_strv(bus, path, interfaces);
|
|
}
|
|
|
|
_public_ int sd_bus_add_object_manager(sd_bus *bus, const char *path) {
|
|
struct node *n;
|
|
|
|
assert_return(bus, -EINVAL);
|
|
assert_return(object_path_is_valid(path), -EINVAL);
|
|
assert_return(!bus_pid_changed(bus), -ECHILD);
|
|
|
|
n = bus_node_allocate(bus, path);
|
|
if (!n)
|
|
return -ENOMEM;
|
|
|
|
n->object_manager = true;
|
|
bus->nodes_modified = true;
|
|
return 0;
|
|
}
|
|
|
|
_public_ int sd_bus_remove_object_manager(sd_bus *bus, const char *path) {
|
|
struct node *n;
|
|
|
|
assert_return(bus, -EINVAL);
|
|
assert_return(object_path_is_valid(path), -EINVAL);
|
|
assert_return(!bus_pid_changed(bus), -ECHILD);
|
|
|
|
n = hashmap_get(bus->nodes, path);
|
|
if (!n)
|
|
return 0;
|
|
|
|
if (!n->object_manager)
|
|
return 0;
|
|
|
|
n->object_manager = false;
|
|
bus->nodes_modified = true;
|
|
bus_node_gc(bus, n);
|
|
|
|
return 1;
|
|
}
|