/*
* dnsGetHostByName
*
* DESCRIPTION: Perform an DNS lookup of the name specified
*
* RETURNS: returns 0 for success or DNS_ERR_NOHOST
*
*/
cc_int32_t
dnsGetHostByName (const char *hname,
cpr_ip_addr_t *ipaddr_ptr,
cc_int32_t timeout,
cc_int32_t retries)
{
uint32_t ip_address;
struct hostent *dns_response;
#ifdef IPV6_STACK_ENABLED
uint32_t err;
uint16_t ip_valid;
char ip_addr[MAX_IPADDR_STR_LEN];
struct addrinfo hints, *result;
struct sockaddr sa;
#endif
#ifdef IPV6_STACK_ENABLED
/* Check if the IPv6 address */
ip_valid = cpr_inet_pton(AF_INET6, hname, ip_addr);
if (ip_valid) {
ipaddr_ptr->type = CPR_IP_ADDR_IPV6;
cpr_memcopy(ipaddr_ptr->u.ip6.addr.base8, ip_addr, 16);
return(0);
}
#endif
ip_address = inet_addr(hname);
if (ip_address != INADDR_NONE) {
ipaddr_ptr->u.ip4 = ip_address;
ipaddr_ptr->type = CPR_IP_ADDR_IPV4;
return 0;
} else {
#ifdef IPV6_STACK_ENABLED
memset(&hints, 0, sizeof(hints));
hints.ai_family = PF_INET6;
err = getaddrinfo(hname, NULL, &hints, &result);
if (err) {
return DNS_ERR_NOHOST;
}
while (result) {
sa = result->ai_addr;
if (sa->family == AF_INET) {
ipaddr_ptr->type = CPR_IP_ADDR_IPV4;
ip_addr->u.ip4 = ((cpr_sockaddr_in_t *)from)->sin_addr.s_addr;
} else if (sa->family == AF_INET6) {
//Todo IPv6: Add getaddrinfo() functioncall to get the IPv6 address.
ipaddr_ptr->type = CPR_IP_ADDR_IPV6;
ip_addr->u.ip6 = ((cpr_sockaddr_in6_t *)sa)->sin6_addr;
}
}
freeaddrinfo(result);
#endif
dns_response = gethostbyname(hname);
if (dns_response) {
ipaddr_ptr->u.ip4 = *(uint32_t *) dns_response->h_addr_list[0];
ipaddr_ptr->type = CPR_IP_ADDR_IPV4;
return 0;
}
}
return DNS_ERR_NOHOST;
}
uint32_t
IPNameCk (char *name, char *addr_error)
{
char *namePtr = name;
char string[4] = { 0, 0, 0, 0 };
int x = 0;
int i = 0;
uint32_t temp, ip_addr = 0;
char ip_addr_out[MAX_IPADDR_STR_LEN];
unsigned long strtoul_result;
char *strtoul_end;
/* Check if valid IPv6 address */
if (cpr_inet_pton(AF_INET6, name, ip_addr_out)) {
*addr_error = FALSE;
return TRUE;
}
*addr_error = TRUE;
while (*namePtr != 0) {
if ((*namePtr >= 0x30) && (*namePtr <= 0x39)) {
if (x > 2)
return (0);
string[x++] = *namePtr++;
} else {
if (*namePtr == 0x2e) {
if (i > 3)
return (0);
namePtr++;
x = 0;
errno = 0;
strtoul_result = strtoul(string, &strtoul_end, 10);
if (errno || string == strtoul_end || strtoul_result > 255) {
return 0;
}
temp = (uint32_t) strtoul_result;
ip_addr |= temp << (24 - (i * 8));
string[0] = 0;
string[1] = 0;
string[2] = 0;
i++;
} else
return (0); // not an IP address
}
}
if (i == 3) {
errno = 0;
strtoul_result = strtoul(string, &strtoul_end, 10);
if (errno || string == strtoul_end || strtoul_result > 255) {
return 0;
}
temp = (uint32_t) strtoul_result;
ip_addr |= temp;
*addr_error = FALSE;
return (ntohl(ip_addr));
} else {
return 0;
}
}
