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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:49:52 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:49:52 +0000
commit55944e5e40b1be2afc4855d8d2baf4b73d1876b5 (patch)
tree33f869f55a1b149e9b7c2b7e201867ca5dd52992 /src/network/networkd-dhcp-server-bus.c
parentInitial commit. (diff)
downloadsystemd-55944e5e40b1be2afc4855d8d2baf4b73d1876b5.tar.xz
systemd-55944e5e40b1be2afc4855d8d2baf4b73d1876b5.zip
Adding upstream version 255.4.upstream/255.4
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/network/networkd-dhcp-server-bus.c')
-rw-r--r--src/network/networkd-dhcp-server-bus.c117
1 files changed, 117 insertions, 0 deletions
diff --git a/src/network/networkd-dhcp-server-bus.c b/src/network/networkd-dhcp-server-bus.c
new file mode 100644
index 0000000..e3397c3
--- /dev/null
+++ b/src/network/networkd-dhcp-server-bus.c
@@ -0,0 +1,117 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include "alloc-util.h"
+#include "bus-common-errors.h"
+#include "bus-util.h"
+#include "dhcp-server-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;
+ DHCPLease *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.data, lease->client_id.length);
+ 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,
+};