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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include "alloc-util.h"
#include "bus-common-errors.h"
#include "bus-util.h"
#include "dhcp-server-lease-internal.h"
#include "networkd-dhcp-server-bus.h"
#include "networkd-link-bus.h"
#include "networkd-manager.h"
#include "strv.h"
static int property_get_leases(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
Link *l = ASSERT_PTR(userdata);
sd_dhcp_server *s;
sd_dhcp_server_lease *lease;
int r;
assert(reply);
s = l->dhcp_server;
if (!s)
return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Link %s has no DHCP server.", l->ifname);
if (sd_dhcp_server_is_in_relay_mode(s))
return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Link %s has DHCP relay agent active.", l->ifname);
r = sd_bus_message_open_container(reply, 'a', "(uayayayayt)");
if (r < 0)
return r;
HASHMAP_FOREACH(lease, s->bound_leases_by_client_id) {
r = sd_bus_message_open_container(reply, 'r', "uayayayayt");
if (r < 0)
return r;
r = sd_bus_message_append(reply, "u", (uint32_t)AF_INET);
if (r < 0)
return r;
r = sd_bus_message_append_array(reply, 'y', lease->client_id.raw, lease->client_id.size);
if (r < 0)
return r;
r = sd_bus_message_append_array(reply, 'y', &lease->address, sizeof(lease->address));
if (r < 0)
return r;
r = sd_bus_message_append_array(reply, 'y', &lease->gateway, sizeof(lease->gateway));
if (r < 0)
return r;
r = sd_bus_message_append_array(reply, 'y', &lease->chaddr, sizeof(lease->chaddr));
if (r < 0)
return r;
r = sd_bus_message_append_basic(reply, 't', &lease->expiration);
if (r < 0)
return r;
r = sd_bus_message_close_container(reply);
if (r < 0)
return r;
}
return sd_bus_message_close_container(reply);
}
static int dhcp_server_emit_changed(Link *link, const char *property, ...) {
_cleanup_free_ char *path = NULL;
char **l;
assert(link);
if (sd_bus_is_ready(link->manager->bus) <= 0)
return 0;
path = link_bus_path(link);
if (!path)
return log_oom();
l = strv_from_stdarg_alloca(property);
return sd_bus_emit_properties_changed_strv(
link->manager->bus,
path,
"org.freedesktop.network1.DHCPServer",
l);
}
void dhcp_server_callback(sd_dhcp_server *s, uint64_t event, void *data) {
Link *l = ASSERT_PTR(data);
if (event & SD_DHCP_SERVER_EVENT_LEASE_CHANGED)
(void) dhcp_server_emit_changed(l, "Leases", NULL);
}
static const sd_bus_vtable dhcp_server_vtable[] = {
SD_BUS_VTABLE_START(0),
SD_BUS_PROPERTY("Leases", "a(uayayayayt)", property_get_leases, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_VTABLE_END
};
const BusObjectImplementation dhcp_server_object = {
"/org/freedesktop/network1/link",
"org.freedesktop.network1.DHCPServer",
.fallback_vtables = BUS_FALLBACK_VTABLES({dhcp_server_vtable, link_object_find}),
.node_enumerator = link_node_enumerator,
};
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