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fix: the dhcp server copies the hardware address (ch... in... #11372

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fix: the dhcp server copies the hardware address (ch... in... #11372

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6 changes: 3 additions & 3 deletions components/net/lwip-dhcpd/dhcp_server_raw.c
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Original file line number Diff line number Diff line change
Expand Up @@ -266,7 +266,7 @@ dhcp_client_alloc(struct dhcp_server *dhcpserver, struct dhcp_msg *msg,
{
return NULL;
}
SMEMCPY(node->chaddr, msg->chaddr, msg->hlen);
SMEMCPY(node->chaddr, msg->chaddr, (msg->hlen > sizeof(node->chaddr)) ? sizeof(node->chaddr) : msg->hlen);
node->ipaddr = dhcpserver->current;

node->next = dhcpserver->node_list;
Expand Down Expand Up @@ -731,10 +731,10 @@ void dhcpd_start(const char *netif_name)
}
p = p + 1; /* move to xxx.xxx.xxx.^ */

sprintf(p, "%d", DHCPD_CLIENT_IP_MIN);
snprintf(p, (size_t)(str_tmp + sizeof(str_tmp) - p), "%d", DHCPD_CLIENT_IP_MIN);
ip4addr_aton(str_tmp, &ip_start);
DEBUG_PRINTF("ip_start: [%s]\r\n", str_tmp);
sprintf(p, "%d", DHCPD_CLIENT_IP_MAX);
snprintf(p, (size_t)(str_tmp + sizeof(str_tmp) - p), "%d", DHCPD_CLIENT_IP_MAX);
ip4addr_aton(str_tmp, &ip_end);
DEBUG_PRINTF("ip_end: [%s]\r\n", str_tmp);

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