-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
/***
This file is part of systemd.
int dhcp_identifier_set_duid_en(struct duid *duid, size_t *len) {
sd_id128_t machine_id;
+ uint64_t hash;
int r;
assert(duid);
if (r < 0)
return r;
- unaligned_write_be16(&duid->type, DHCP6_DUID_EN);
+ unaligned_write_be16(&duid->type, DUID_TYPE_EN);
unaligned_write_be32(&duid->en.pen, 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);
+ directly; duid->en.id might not be aligned, so we need to copy */
+ hash = htole64(siphash24(&machine_id, sizeof(machine_id), HASH_KEY.bytes));
+ memcpy(duid->en.id, &hash, sizeof(duid->en.id));
return 0;
}
}
if (name)
- siphash24((uint8_t*)&id, name, strlen(name), HASH_KEY.bytes);
+ id = siphash24(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);
+ id = siphash24(mac, mac_len, HASH_KEY.bytes);
+
+ id = htole64(id);
/* fold into 32 bits */
unaligned_write_be32(_id, (id & 0xffffffff) ^ (id >> 32));