blob: 121c200013a6bb71663984dcae897677715bde68 [file] [log] [blame]
/** @file
* @brief Hostname configuration
*/
/*
* Copyright (c) 2017 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/logging/log.h>
LOG_MODULE_REGISTER(net_hostname, CONFIG_NET_HOSTNAME_LOG_LEVEL);
#include <zephyr/kernel.h>
#include <zephyr/net/hostname.h>
#include <zephyr/net/net_core.h>
#include <zephyr/net/net_mgmt.h>
#include <zephyr/logging/log_backend_net.h>
static char hostname[NET_HOSTNAME_SIZE];
static void trigger_net_event(void)
{
if (IS_ENABLED(CONFIG_NET_MGMT_EVENT_INFO)) {
struct net_event_l4_hostname info;
memcpy(info.hostname, hostname, sizeof(hostname));
net_mgmt_event_notify_with_info(NET_EVENT_HOSTNAME_CHANGED, NULL,
&info, sizeof(info));
} else {
net_mgmt_event_notify(NET_EVENT_HOSTNAME_CHANGED, NULL);
}
if (IS_ENABLED(CONFIG_LOG_BACKEND_NET)) {
log_backend_net_hostname_set(hostname, sizeof(hostname));
}
}
const char *net_hostname_get(void)
{
return hostname;
}
#if defined(CONFIG_NET_HOSTNAME_DYNAMIC)
int net_hostname_set(char *host, size_t len)
{
if (len > NET_HOSTNAME_MAX_LEN) {
return -ENOMEM;
}
memcpy(hostname, host, len);
hostname[len] = 0;
NET_DBG("New hostname %s", hostname);
trigger_net_event();
return 0;
}
#endif
#if defined(CONFIG_NET_HOSTNAME_UNIQUE)
int net_hostname_set_postfix(const uint8_t *hostname_postfix,
int postfix_len)
{
#if !defined(CONFIG_NET_HOSTNAME_UNIQUE_UPDATE)
static bool postfix_set;
#endif
int pos = 0;
int i;
#if !defined(CONFIG_NET_HOSTNAME_UNIQUE_UPDATE)
if (postfix_set) {
return -EALREADY;
}
#endif
NET_ASSERT(postfix_len > 0);
/* Note that we convert the postfix to hex (2 chars / byte) */
if ((postfix_len * 2) >
(NET_HOSTNAME_MAX_LEN - (sizeof(CONFIG_NET_HOSTNAME) - 1))) {
return -EMSGSIZE;
}
for (i = 0; i < postfix_len; i++, pos += 2) {
snprintk(&hostname[sizeof(CONFIG_NET_HOSTNAME) - 1 + pos], 2 + 1, "%02x",
hostname_postfix[i]);
}
NET_DBG("New hostname %s", hostname);
#if !defined(CONFIG_NET_HOSTNAME_UNIQUE_UPDATE)
postfix_set = true;
#endif
trigger_net_event();
return 0;
}
#endif /* CONFIG_NET_HOSTNAME_UNIQUE */
void net_hostname_init(void)
{
memcpy(hostname, CONFIG_NET_HOSTNAME, sizeof(CONFIG_NET_HOSTNAME) - 1);
NET_DBG("Hostname set to %s", CONFIG_NET_HOSTNAME);
trigger_net_event();
}