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network: DHCP6 - introduce DHCP6 DUID to string

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This commit is contained in:
Susant Sahani 2020-06-09 16:47:49 +02:00
parent 45204921be
commit 6b7d5b6eaf
2 changed files with 46 additions and 0 deletions
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43
src/libsystemd-network/sd-dhcp6-client.c
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@ -18,6 +18,7 @@
#include "dns-domain.h"
#include "event-util.h"
#include "fd-util.h"
#include "hexdecoct.h"
#include "hostname-util.h"
#include "in-addr-util.h"
#include "network-internal.h"
@ -331,6 +332,48 @@ int sd_dhcp6_client_set_duid_llt(
return dhcp6_client_set_duid_internal(client, DUID_TYPE_LLT, NULL, 0, llt_time);
}
static const char* const dhcp6_duid_type_table[_DUID_TYPE_MAX] = {
[DUID_TYPE_LLT] = "DUID-LLT",
[DUID_TYPE_EN] = "DUID-EN/Vendor",
[DUID_TYPE_LL] = "DUID-LL",
[DUID_TYPE_UUID] = "UUID",
};
DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(dhcp6_duid_type, DUIDType);
int sd_dhcp6_client_duid_as_string(
sd_dhcp6_client *client,
char **duid) {
_cleanup_free_ char *p = NULL, *s = NULL, *t = NULL;
const char *v;
int r;
assert_return(client, -EINVAL);
assert_return(client->duid_len > 0, -ENODATA);
v = dhcp6_duid_type_to_string(be16toh(client->duid.type));
if (v) {
s = strdup(v);
if (!s)
return -ENOMEM;
} else {
r = asprintf(&s, "%0x", client->duid.type);
if (r < 0)
return -ENOMEM;
}
t = hexmem(&client->duid.raw.data, client->duid_len);
if (!t)
return -ENOMEM;
p = strjoin(s, ":", t);
if (!p)
return -ENOMEM;
*duid = TAKE_PTR(p);
return 0;
}
int sd_dhcp6_client_set_iaid(sd_dhcp6_client *client, uint32_t iaid) {
assert_return(client, -EINVAL);
assert_return(IN_SET(client->state, DHCP6_STATE_STOPPED), -EBUSY);

3
src/systemd/sd-dhcp6-client.h
View File

@ -113,6 +113,9 @@ int sd_dhcp6_client_set_iaid(
int sd_dhcp6_client_get_iaid(
sd_dhcp6_client *client,
uint32_t *iaid);
int sd_dhcp6_client_duid_as_string(
sd_dhcp6_client *client,
char **duid);
int sd_dhcp6_client_set_fqdn(
sd_dhcp6_client *client,
const char *fqdn);