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Merge pull request #27578 from yuwata/sd-dhcp-client-client-id-len

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sd-dhcp-client: several cleanups for client_id_len
This commit is contained in:
Yu Watanabe 2023-05-09 06:08:32 +09:00 committed by GitHub
parent f86a388de3 e69c281ad2
commit aa7b8755b6
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 32 additions and 27 deletions
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53
src/libsystemd-network/sd-dhcp-client.c
View file

@ -339,25 +339,32 @@ int sd_dhcp_client_set_mac(
int sd_dhcp_client_get_client_id(
sd_dhcp_client *client,
uint8_t *type,
const uint8_t **data,
size_t *data_len) {
uint8_t *ret_type,
const uint8_t **ret_data,
size_t *ret_data_len) {
assert_return(client, -EINVAL);
assert_return(type, -EINVAL);
assert_return(data, -EINVAL);
assert_return(data_len, -EINVAL);
if (client->client_id_len) {
*type = client->client_id.type;
*data = client->client_id.raw.data;
*data_len = client->client_id_len - sizeof(client->client_id.type);
} else {
*type = 0;
*data = NULL;
*data_len = 0;
if (client->client_id_len > 0) {
if (client->client_id_len < offsetof(sd_dhcp_client_id, raw.data))
return -EINVAL;
if (ret_type)
*ret_type = client->client_id.type;
if (ret_data)
*ret_data = client->client_id.raw.data;
if (ret_data_len)
*ret_data_len = client->client_id_len - offsetof(sd_dhcp_client_id, raw.data);
return 1;
}
if (ret_type)
*ret_type = 0;
if (ret_data)
*ret_data = NULL;
if (ret_data_len)
*ret_data_len = 0;
return 0;
}
@ -828,14 +835,12 @@ static int client_message_init(
/* Some DHCP servers will refuse to issue an DHCP lease if the Client
Identifier option is not set */
if (client->client_id_len) {
r = dhcp_option_append(&packet->dhcp, optlen, &optoffset, 0,
SD_DHCP_OPTION_CLIENT_IDENTIFIER,
client->client_id_len,
&client->client_id);
if (r < 0)
return r;
}
r = dhcp_option_append(&packet->dhcp, optlen, &optoffset, 0,
SD_DHCP_OPTION_CLIENT_IDENTIFIER,
client->client_id_len,
&client->client_id);
if (r < 0)
return r;
/* RFC2131 section 3.5:
in its initial DHCPDISCOVER or DHCPREQUEST message, a
@ -1472,7 +1477,7 @@ static int client_handle_offer(sd_dhcp_client *client, DHCPMessage *offer, size_
if (r < 0)
return r;
if (client->client_id_len) {
if (client->client_id_len > 0) {
r = dhcp_lease_set_client_id(lease,
(uint8_t *) &client->client_id,
client->client_id_len);
@ -1566,7 +1571,7 @@ static int client_handle_ack(sd_dhcp_client *client, DHCPMessage *ack, size_t le
if (r < 0)
return r;
if (client->client_id_len) {
if (client->client_id_len > 0) {
r = dhcp_lease_set_client_id(lease,
(uint8_t *) &client->client_id,
client->client_id_len);

6
src/systemd/sd-dhcp-client.h
View file

@ -279,9 +279,9 @@ int sd_dhcp_client_set_duid_llt(
uint64_t llt_time);
int sd_dhcp_client_get_client_id(
sd_dhcp_client *client,
uint8_t *type,
const uint8_t **data,
size_t *data_len);
uint8_t *ret_type,
const uint8_t **ret_data,
size_t *ret_data_len);
int sd_dhcp_client_set_mtu(
sd_dhcp_client *client,
uint32_t mtu);