+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright (C) 2015 Tom Gundersen <teg@jklmen>
-
- 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 "sd-id128.h"
-#include "libudev.h"
-#include "udev-util.h"
-
-#include "virt.h"
-#include "sparse-endian.h"
-#include "siphash24.h"
-
-#include "dhcp6-protocol.h"
-#include "dhcp-identifier.h"
-#include "network-internal.h"
-
-#define SYSTEMD_PEN 43793
-#define HASH_KEY SD_ID128_MAKE(80,11,8c,c2,fe,4a,03,ee,3e,d6,0c,6f,36,39,14,09)
-
-int dhcp_identifier_set_duid_en(struct duid *duid, size_t *len) {
- sd_id128_t machine_id;
- int r;
-
- assert(duid);
- assert(len);
-
- r = sd_id128_get_machine(&machine_id);
- if (r < 0)
- return r;
-
- duid->type = htobe16(DHCP6_DUID_EN);
- duid->en.pen = htobe32(SYSTEMD_PEN);
- *len = sizeof(duid->type) + sizeof(duid->en);
-
- /* a bit of snake-oil perhaps, but no need to expose the machine-id
- directly */
- siphash24(duid->en.id, &machine_id, sizeof(machine_id), HASH_KEY.bytes);
-
- return 0;
-}
-
-
-int dhcp_identifier_set_iaid(int ifindex, uint8_t *mac, size_t mac_len, uint32_t *_id) {
- /* name is a pointer to memory in the udev_device struct, so must
- have the same scope */
- _cleanup_udev_device_unref_ struct udev_device *device = NULL;
- const char *name = NULL;
- uint64_t id;
-
- if (detect_container(NULL) <= 0) {
- /* not in a container, udev will be around */
- _cleanup_udev_unref_ struct udev *udev;
- char ifindex_str[2 + DECIMAL_STR_MAX(int)];
-
- udev = udev_new();
- if (!udev)
- return -ENOMEM;
-
- sprintf(ifindex_str, "n%d", ifindex);
- device = udev_device_new_from_device_id(udev, ifindex_str);
- if (device) {
- if (udev_device_get_is_initialized(device) <= 0)
- /* not yet ready */
- return -EBUSY;
-
- name = net_get_name(device);
- }
- }
-
- if (name)
- siphash24((uint8_t*)&id, name, strlen(name), HASH_KEY.bytes);
- else
- /* fall back to MAC address if no predictable name available */
- siphash24((uint8_t*)&id, mac, mac_len, HASH_KEY.bytes);
-
- /* fold into 32 bits */
- *_id = (id & 0xffffffff) ^ (id >> 32);
-
- return 0;
-}