Use dynamic memory for cached DNS names
Fixes
@@ -177,7 +177,7 @@ struct dns_table_entry {
u8_t seqno;
u8_t err;
u32_t ttl;
- char name[DNS_MAX_NAME_LENGTH];
+ char *name;
ip_addr_t ipaddr;
/* pointer to callback on DNS query done */
dns_found_callback found;
@@ -924,11 +924,14 @@ dns_enqueue(const char *name, dns_found_callback found, void *callback_arg)
LWIP_DEBUGF(DNS_DEBUG, ("dns_enqueue: \"%s\": use DNS entry %"U16_F"\n", name, (u16_t)(i)));
/* fill the entry */
+ namelen = LWIP_MIN(os_strlen(name), DNS_MAX_NAME_LENGTH-1);
+ if ((pEntry->name = (char *) mem_realloc(pEntry->name, namelen+1)) == NULL) {
+ return ERR_MEM;
+ }
pEntry->state = DNS_STATE_NEW;
pEntry->seqno = dns_seqno++;
pEntry->found = found;
pEntry->arg = callback_arg;
- namelen = LWIP_MIN(os_strlen(name), DNS_MAX_NAME_LENGTH-1);
MEMCPY(pEntry->name, name, namelen);
pEntry->name[namelen] = 0;
