#include "udev.h"
#include "udev-util.h"
-#include "virt.h"
-#include "siphash24.h"
#include "util.h"
#include "refcnt.h"
#include "dhcp6-protocol.h"
#include "dhcp6-internal.h"
#include "dhcp6-lease-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)
-
-/* RFC 3315 section 9.1:
- * A DUID can be no more than 128 octets long (not including the type code).
- */
-#define MAX_DUID_LEN 128
+#include "dhcp-identifier.h"
#define MAX_MAC_ADDR_LEN INFINIBAND_ALEN
sd_event_source *timeout_resend_expire;
sd_dhcp6_client_cb_t cb;
void *userdata;
- union {
- struct {
- uint16_t type; /* DHCP6_DUID_LLT */
- uint16_t htype;
- uint32_t time;
- uint8_t haddr[0];
- } _packed_ llt;
- struct {
- uint16_t type; /* DHCP6_DUID_EN */
- uint32_t pen;
- uint8_t id[8];
- } _packed_ en;
- struct {
- uint16_t type; /* DHCP6_DUID_LL */
- uint16_t htype;
- uint8_t haddr[0];
- } _packed_ ll;
- struct {
- uint16_t type; /* DHCP6_DUID_UUID */
- sd_id128_t uuid;
- } _packed_ uuid;
- struct {
- uint16_t type;
- uint8_t data[MAX_DUID_LEN];
- } _packed_ raw;
- } duid;
+ struct duid duid;
size_t duid_len;
};
switch (type) {
case DHCP6_DUID_LLT:
- if (duid_len <= sizeof(client->duid.llt) - 2)
+ if (duid_len <= sizeof(client->duid.llt))
return -EINVAL;
break;
case DHCP6_DUID_EN:
- if (duid_len != sizeof(client->duid.en) - 2)
+ if (duid_len != sizeof(client->duid.en))
return -EINVAL;
break;
case DHCP6_DUID_LL:
- if (duid_len <= sizeof(client->duid.ll) - 2)
+ if (duid_len <= sizeof(client->duid.ll))
return -EINVAL;
break;
case DHCP6_DUID_UUID:
- if (duid_len != sizeof(client->duid.uuid) - 2)
+ if (duid_len != sizeof(client->duid.uuid))
return -EINVAL;
break;
default:
break;
}
- client->duid.raw.type = htobe16(type);
+ client->duid.type = htobe16(type);
memcpy(&client->duid.raw.data, duid, duid_len);
- client->duid_len = duid_len + 2; /* +2 for sizeof(type) */
+ client->duid_len = duid_len + sizeof(client->duid.type);
return 0;
}
}
static int client_ensure_iaid(sd_dhcp6_client *client) {
- /* 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;
+ int r;
assert(client);
if (client->ia_na.id)
return 0;
- 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", client->index);
- device = udev_device_new_from_device_id(udev, ifindex_str);
- if (!device)
- return -errno;
-
- 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, &client->mac_addr,
- client->mac_addr_len, HASH_KEY.bytes);
-
- /* fold into 32 bits */
- client->ia_na.id = (id & 0xffffffff) ^ (id >> 32);
+ r = dhcp_identifier_set_iaid(client->index, client->mac_addr, client->mac_addr_len, &client->ia_na.id);
+ if (r < 0)
+ return r;
return 0;
}
assert_return(client->index > 0, -EINVAL);
assert_return(client->state != state, -EINVAL);
- log_dhcp6_client(client, "client state %d new state %d", client->state, state);
client->timeout_resend_expire =
sd_event_source_unref(client->timeout_resend_expire);
client->timeout_resend = sd_event_source_unref(client->timeout_resend);
}
sd_dhcp6_client *sd_dhcp6_client_unref(sd_dhcp6_client *client) {
- if (client && REFCNT_DEC(client->n_ref) <= 0) {
+ if (client && REFCNT_DEC(client->n_ref) == 0) {
client_reset(client);
sd_dhcp6_client_detach_event(client);
int sd_dhcp6_client_new(sd_dhcp6_client **ret)
{
_cleanup_dhcp6_client_unref_ sd_dhcp6_client *client = NULL;
- sd_id128_t machine_id;
int r;
size_t t;
client->fd = -1;
/* initialize DUID */
- client->duid.en.type = htobe16(DHCP6_DUID_EN);
- client->duid.en.pen = htobe32(SYSTEMD_PEN);
- client->duid_len = sizeof(client->duid.en);
-
- r = sd_id128_get_machine(&machine_id);
+ r = dhcp_identifier_set_duid_en(&client->duid, &client->duid_len);
if (r < 0)
return r;
- /* a bit of snake-oil perhaps, but no need to expose the machine-id
- directly */
- siphash24(client->duid.en.id, &machine_id, sizeof(machine_id), HASH_KEY.bytes);
-
client->req_opts_len = ELEMENTSOF(default_req_opts);
client->req_opts = new0(be16_t, client->req_opts_len);