sd_event *event;
int event_priority;
sd_event_source *timeout_resend;
- int index;
+ int ifindex;
int fd;
union sockaddr_union link;
sd_event_source *receive_message;
sd_event_source *timeout_t1;
sd_event_source *timeout_t2;
sd_event_source *timeout_expire;
- sd_dhcp_client_callback_t cb;
+ sd_dhcp_client_callback_t callback;
void *userdata;
sd_dhcp_lease *lease;
usec_t start_delay;
sd_dhcp_client *client,
sd_dhcp_client_callback_t cb,
void *userdata) {
+
assert_return(client, -EINVAL);
- client->cb = cb;
+ client->callback = cb;
client->userdata = userdata;
return 0;
size_t i;
assert_return(client, -EINVAL);
- assert_return (IN_SET(client->state, DHCP_STATE_INIT,
- DHCP_STATE_STOPPED), -EBUSY);
+ assert_return(IN_SET(client->state, DHCP_STATE_INIT, DHCP_STATE_STOPPED), -EBUSY);
switch(option) {
+
case SD_DHCP_OPTION_PAD:
case SD_DHCP_OPTION_OVERLOAD:
case SD_DHCP_OPTION_MESSAGE_TYPE:
int sd_dhcp_client_set_request_address(
sd_dhcp_client *client,
const struct in_addr *last_addr) {
+
assert_return(client, -EINVAL);
- assert_return (IN_SET(client->state, DHCP_STATE_INIT,
- DHCP_STATE_STOPPED), -EBUSY);
+ assert_return(IN_SET(client->state, DHCP_STATE_INIT, DHCP_STATE_STOPPED), -EBUSY);
if (last_addr)
client->last_addr = last_addr->s_addr;
return 0;
}
-int sd_dhcp_client_set_index(sd_dhcp_client *client, int interface_index) {
- assert_return(client, -EINVAL);
- assert_return (IN_SET(client->state, DHCP_STATE_INIT,
- DHCP_STATE_STOPPED), -EBUSY);
- assert_return(interface_index > 0, -EINVAL);
+int sd_dhcp_client_set_ifindex(sd_dhcp_client *client, int ifindex) {
- client->index = interface_index;
+ assert_return(client, -EINVAL);
+ assert_return(IN_SET(client->state, DHCP_STATE_INIT, DHCP_STATE_STOPPED), -EBUSY);
+ assert_return(ifindex > 0, -EINVAL);
+ client->ifindex = ifindex;
return 0;
}
return 0;
if (!IN_SET(client->state, DHCP_STATE_INIT, DHCP_STATE_STOPPED)) {
- log_dhcp_client(client, "Changing MAC address on running DHCP "
- "client, restarting");
+ log_dhcp_client(client, "Changing MAC address on running DHCP client, restarting");
need_restart = true;
client_stop(client, SD_DHCP_CLIENT_EVENT_STOP);
}
assert_return(data_len > 0 && data_len <= MAX_CLIENT_ID_LEN, -EINVAL);
switch (type) {
+
case ARPHRD_ETHER:
if (data_len != ETH_ALEN)
return -EINVAL;
break;
+
case ARPHRD_INFINIBAND:
if (data_len != INFINIBAND_ALEN)
return -EINVAL;
break;
+
default:
break;
}
return 0;
}
+/**
+ * Sets IAID and DUID. If duid is non-null, the DUID is set to duid_type + duid
+ * without further modification. Otherwise, if duid_type is supported, DUID
+ * is set based on that type. Otherwise, an error is returned.
+ */
int sd_dhcp_client_set_iaid_duid(
sd_dhcp_client *client,
uint32_t iaid,
uint16_t duid_type,
- uint8_t *duid,
+ const void *duid,
size_t duid_len) {
DHCP_CLIENT_DONT_DESTROY(client);
int r;
+ size_t len;
+
assert_return(client, -EINVAL);
- zero(client->client_id);
+ assert_return(duid_len == 0 || duid != NULL, -EINVAL);
+ if (duid != NULL) {
+ r = dhcp_validate_duid_len(duid_type, duid_len);
+ if (r < 0)
+ return r;
+ }
+
+ zero(client->client_id);
client->client_id.type = 255;
/* If IAID is not configured, generate it. */
if (iaid == 0) {
- r = dhcp_identifier_set_iaid(client->index, client->mac_addr,
+ r = dhcp_identifier_set_iaid(client->ifindex, client->mac_addr,
client->mac_addr_len,
&client->client_id.ns.iaid);
if (r < 0)
} else
client->client_id.ns.iaid = htobe32(iaid);
- /* If DUID is not configured, generate DUID-EN. */
- if (duid_len == 0) {
- r = dhcp_identifier_set_duid_en(&client->client_id.ns.duid,
- &duid_len);
- if (r < 0)
- return r;
- } else {
- r = dhcp_validate_duid_len(client->client_id.type, duid_len);
- if (r < 0)
- return r;
+ if (duid != NULL) {
client->client_id.ns.duid.type = htobe16(duid_type);
memcpy(&client->client_id.ns.duid.raw.data, duid, duid_len);
- duid_len += sizeof(client->client_id.ns.duid.type);
- }
+ len = sizeof(client->client_id.ns.duid.type) + duid_len;
+ } else if (duid_type == DUID_TYPE_EN) {
+ r = dhcp_identifier_set_duid_en(&client->client_id.ns.duid, &len);
+ if (r < 0)
+ return r;
+ } else
+ return -EOPNOTSUPP;
- client->client_id_len = sizeof(client->client_id.type) + duid_len +
+ client->client_id_len = sizeof(client->client_id.type) + len +
sizeof(client->client_id.ns.iaid);
if (!IN_SET(client->state, DHCP_STATE_INIT, DHCP_STATE_STOPPED)) {
int sd_dhcp_client_get_lease(sd_dhcp_client *client, sd_dhcp_lease **ret) {
assert_return(client, -EINVAL);
- assert_return(ret, -EINVAL);
if (client->state != DHCP_STATE_BOUND &&
client->state != DHCP_STATE_RENEWING &&
client->state != DHCP_STATE_REBINDING)
return -EADDRNOTAVAIL;
- *ret = client->lease;
+ if (ret)
+ *ret = client->lease;
return 0;
}
static void client_notify(sd_dhcp_client *client, int event) {
- if (client->cb)
- client->cb(client, event, client->userdata);
+ assert(client);
+
+ if (client->callback)
+ client->callback(client, event, client->userdata);
}
static int client_initialize(sd_dhcp_client *client) {
assert_return(client, -EINVAL);
- client->receive_message =
- sd_event_source_unref(client->receive_message);
+ client->receive_message = sd_event_source_unref(client->receive_message);
client->fd = asynchronous_close(client->fd);
client->client_id.type = 255;
- r = dhcp_identifier_set_iaid(client->index, client->mac_addr, client->mac_addr_len, &client->client_id.ns.iaid);
+ r = dhcp_identifier_set_iaid(client->ifindex, client->mac_addr, client->mac_addr_len, &client->client_id.ns.iaid);
if (r < 0)
return r;
size_t optoffset, optlen;
int r;
- r = client_message_init(client, &request, DHCP_REQUEST,
- &optlen, &optoffset);
+ assert(client);
+
+ r = client_message_init(client, &request, DHCP_REQUEST, &optlen, &optoffset);
if (r < 0)
return r;
return r;
switch (client->state) {
+
case DHCP_STATE_REQUESTING:
log_dhcp_client(client, "REQUEST (requesting)");
break;
+
case DHCP_STATE_INIT_REBOOT:
log_dhcp_client(client, "REQUEST (init-reboot)");
break;
+
case DHCP_STATE_RENEWING:
log_dhcp_client(client, "REQUEST (renewing)");
break;
+
case DHCP_STATE_REBINDING:
log_dhcp_client(client, "REQUEST (rebinding)");
break;
+
default:
log_dhcp_client(client, "REQUEST (invalid)");
break;
goto error;
switch (client->state) {
+
case DHCP_STATE_RENEWING:
time_left = (client->lease->t2 - client->lease->t1) / 2;
assert_return(client, -EINVAL);
assert_return(client->event, -EINVAL);
- assert_return(client->index > 0, -EINVAL);
+ assert_return(client->ifindex > 0, -EINVAL);
assert_return(client->fd < 0, -EBUSY);
assert_return(client->xid == 0, -EINVAL);
- assert_return(client->state == DHCP_STATE_INIT ||
- client->state == DHCP_STATE_INIT_REBOOT, -EBUSY);
+ assert_return(IN_SET(client->state, DHCP_STATE_INIT, DHCP_STATE_INIT_REBOOT), -EBUSY);
client->xid = random_u32();
- r = dhcp_network_bind_raw_socket(client->index, &client->link,
+ r = dhcp_network_bind_raw_socket(client->ifindex, &client->link,
client->xid, client->mac_addr,
client->mac_addr_len, client->arp_type);
if (r < 0) {
DHCP_CLIENT_DONT_DESTROY(client);
int r;
+ assert(client);
+
client->receive_message = sd_event_source_unref(client->receive_message);
client->fd = asynchronous_close(client->fd);
client->state = DHCP_STATE_REBINDING;
client->attempt = 1;
- r = dhcp_network_bind_raw_socket(client->index, &client->link,
+ r = dhcp_network_bind_raw_socket(client->ifindex, &client->link,
client->xid, client->mac_addr,
client->mac_addr_len, client->arp_type);
if (r < 0) {
sd_dhcp_client *client = userdata;
_cleanup_free_ DHCPMessage *message = NULL;
- const struct ether_addr zero_mac = { { 0, 0, 0, 0, 0, 0 } };
+ const struct ether_addr zero_mac = {};
const struct ether_addr *expected_chaddr = NULL;
uint8_t expected_hlen = 0;
ssize_t len, buflen;
if (!message)
return -ENOMEM;
- len = read(fd, message, buflen);
+ len = recv(fd, message, buflen, 0);
if (len < 0) {
if (errno == EAGAIN || errno == EINTR)
return 0;
- log_dhcp_client(client, "Could not receive message from UDP socket: %m");
- return -errno;
- } else if ((size_t)len < sizeof(DHCPMessage)) {
+ return log_dhcp_client_errno(client, errno, "Could not receive message from UDP socket: %m");
+ }
+ if ((size_t) len < sizeof(DHCPMessage)) {
log_dhcp_client(client, "Too small to be a DHCP message: ignoring");
return 0;
}
r = client_start(client);
if (r >= 0)
- log_dhcp_client(client, "STARTED on ifindex %i", client->index);
+ log_dhcp_client(client, "STARTED on ifindex %i", client->ifindex);
return r;
}
}
sd_event *sd_dhcp_client_get_event(sd_dhcp_client *client) {
- if (!client)
- return NULL;
+ assert_return(client, NULL);
return client->event;
}
free(client->req_opts);
free(client->hostname);
free(client->vendor_class_identifier);
- free(client);
-
- return NULL;
+ return mfree(client);
}
int sd_dhcp_client_new(sd_dhcp_client **ret) {
client->n_ref = 1;
client->state = DHCP_STATE_INIT;
- client->index = -1;
+ client->ifindex = -1;
client->fd = -1;
client->attempt = 1;
client->mtu = DHCP_DEFAULT_MIN_SIZE;
client->req_opts_size = ELEMENTSOF(default_req_opts);
-
client->req_opts = memdup(default_req_opts, client->req_opts_size);
if (!client->req_opts)
return -ENOMEM;
projects / thirdparty / systemd.git / blobdiff