1 files changed, 60 insertions, 0 deletions
diff --git a/src/libsystemd-network/dhcp-client-id-internal.h b/src/libsystemd-network/dhcp-client-id-internal.h
new file mode 100644
index 0000000..655f17b
--- /dev/null
+++ b/src/libsystemd-network/dhcp-client-id-internal.h
@@ -0,0 +1,60 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include "sd-dhcp-client-id.h"
+
+#include "dhcp-duid-internal.h"
+#include "json.h"
+#include "macro.h"
+#include "siphash24.h"
+#include "sparse-endian.h"
+
+/* RFC 2132 section 9.14: its minimum length is 2.
+ * Note, its maximum is not mentioend in the RFC. Hence, 255. */
+#define MIN_CLIENT_ID_LEN 2
+#define MAX_CLIENT_ID_LEN 255
+#define MIN_CLIENT_ID_DATA_LEN (MIN_CLIENT_ID_LEN - sizeof(uint8_t))
+#define MAX_CLIENT_ID_DATA_LEN (MAX_CLIENT_ID_LEN - sizeof(uint8_t))
+
+typedef struct sd_dhcp_client_id {
+        size_t size;
+        union {
+                struct {
+                        uint8_t type;
+                        union {
+                                struct {
+                                        /* 0: Generic (non-LL) (RFC 2132) */
+                                        uint8_t data[MAX_CLIENT_ID_DATA_LEN];
+                                } _packed_ gen;
+                                struct {
+                                        /* 1: Ethernet Link-Layer (RFC 2132) */
+                                        uint8_t haddr[ETH_ALEN];
+                                } _packed_ eth;
+                                struct {
+                                        /* 2 - 254: ARP/Link-Layer (RFC 2132) */
+                                        uint8_t haddr[0];
+                                } _packed_ ll;
+                                struct {
+                                        /* 255: Node-specific (RFC 4361) */
+                                        be32_t iaid;
+                                        struct duid duid;
+                                } _packed_ ns;
+                                uint8_t data[MAX_CLIENT_ID_DATA_LEN];
+                        };
+                } _packed_ id;
+                uint8_t raw[MAX_CLIENT_ID_LEN];
+        };
+} sd_dhcp_client_id;
+
+static inline bool client_id_size_is_valid(size_t size) {
+        return size >= MIN_CLIENT_ID_LEN && size <= MAX_CLIENT_ID_LEN;
+}
+
+static inline bool client_id_data_size_is_valid(size_t size) {
+        return size >= MIN_CLIENT_ID_DATA_LEN && size <= MAX_CLIENT_ID_DATA_LEN;
+}
+
+void client_id_hash_func(const sd_dhcp_client_id *client_id, struct siphash *state);
+int client_id_compare_func(const sd_dhcp_client_id *a, const sd_dhcp_client_id *b);
+
+int json_dispatch_client_id(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata);