PRIVATE_EXTERN RTADVSocketRef
RTADVSocketCreate(interface_t * if_p)
{
RTADVSocketRef sock;
RTADVSocketGlobalsRef globals;
globals = RTADVSocketGetGlobals();
if (globals == NULL) {
my_log(LOG_NOTICE, "RTADVSocketCreate: could not allocate globals");
return (NULL);
}
sock = RTADVSocketFind(if_link_index(if_p));
if (sock != NULL) {
my_log(LOG_NOTICE, "RTADVSocketCreate(%s): socket already allocated",
if_name(if_p));
return (NULL);
}
sock = malloc(sizeof(*sock));
if (sock == NULL) {
return (NULL);
}
bzero(sock, sizeof(*sock));
if (dynarray_add(&globals->sockets, sock) == FALSE) {
free(sock);
return (NULL);
}
sock->if_p = if_p;
return (sock);
}
PRIVATE_EXTERN int
RTADVSocketSendSolicitation(RTADVSocketRef sock, bool lladdr_ok)
{
interface_t * if_p = RTADVSocketGetInterface(sock);
boolean_t needs_close = FALSE;
int ret;
uint32_t txbuf[RTSOL_PACKET_MAX / sizeof(uint32_t)];
int txbuf_used; /* amount actually used */
if (sock->fd_open == FALSE) {
/* open the RTADV socket in case it's needed */
if (RTADVSocketOpenSocket(sock) == FALSE) {
my_log(LOG_NOTICE, "RTADVSocket: failed to open socket");
return (FALSE);
}
needs_close = TRUE;
}
txbuf_used = RTADVSocketInitTXBuf(sock, txbuf, lladdr_ok);
ret = IPv6SocketSend(FDCalloutGetFD(S_globals->read_fd),
if_link_index(if_p),
&sin6_allrouters,
(void *)txbuf, txbuf_used,
ND_RTADV_HOP_LIMIT);
if (needs_close) {
RTADVSocketCloseSocket(sock);
}
return (ret);
}
STATIC RTADVSocketRef
RTADVSocketFind(int if_index)
{
int i;
for (i = 0; i < dynarray_count(&S_globals->sockets); i++) {
interface_t * if_p;
RTADVSocketRef sock;
sock = dynarray_element(&S_globals->sockets, i);
if_p = RTADVSocketGetInterface(sock);
if (if_index == if_link_index(if_p)) {
return (sock);
}
}
return (NULL);
}
static void
DHCPv6SocketDemux(int if_index, const DHCPv6PacketRef pkt, int pkt_len)
{
DHCPv6SocketReceiveData data;
DHCPv6OptionErrorString err;
int i;
if (pkt_len < DHCPV6_PACKET_HEADER_LENGTH) {
return;
}
data.pkt = pkt;
data.pkt_len = pkt_len;
data.options = DHCPv6OptionListCreateWithPacket(pkt, pkt_len, &err);
if (data.options == NULL) {
my_log(LOG_NOTICE, "DHCPv6Socket: options parse failed, %s",
err.str);
return;
}
for (i = 0; i < dynarray_count(&S_globals->sockets); i++) {
DHCPv6SocketRef client;
client = dynarray_element(&S_globals->sockets, i);
if (if_index != if_link_index(DHCPv6SocketGetInterface(client))) {
continue;
}
if (S_verbose) {
CFMutableStringRef str;
str = CFStringCreateMutable(NULL, 0);
DHCPv6PacketPrintToString(str, pkt, pkt_len);
if (data.options != NULL) {
DHCPv6OptionListPrintToString(str, data.options);
}
my_log(-LOG_DEBUG, "[%s] Receive %@",
if_name(DHCPv6SocketGetInterface(client)), str);
CFRelease(str);
}
if (client->receive_func != NULL) {
(*client->receive_func)(client->receive_arg1, client->receive_arg2,
&data);
}
}
DHCPv6OptionListRelease(&data.options);
return;
}
int
DHCPv6SocketTransmit(DHCPv6SocketRef sock,
DHCPv6PacketRef pkt, int pkt_len)
{
DHCPv6OptionErrorString err;
int ret;
boolean_t needs_close = FALSE;
if (sock->fd_open == FALSE) {
/* open the DHCPv6 socket in case it's needed */
if (DHCPv6SocketOpenSocket(sock) == FALSE) {
my_log(LOG_ERR, "DHCPv6Socket: failed to open socket");
return (FALSE);
}
needs_close = TRUE;
}
if (S_verbose) {
DHCPv6OptionListRef options;
CFMutableStringRef str;
str = CFStringCreateMutable(NULL, 0);
DHCPv6PacketPrintToString(str, pkt, pkt_len);
options = DHCPv6OptionListCreateWithPacket(pkt, pkt_len, &err);
if (options == NULL) {
my_log_fl(LOG_DEBUG, "parse options failed, %s",
err.str);
}
else {
DHCPv6OptionListPrintToString(str, options);
DHCPv6OptionListRelease(&options);
}
my_log(-LOG_DEBUG,"[%s] Transmit %@", if_name(sock->if_p), str);
CFRelease(str);
}
ret = S_send_packet(FDCalloutGetFD(S_globals->read_fd),
if_link_index(sock->if_p), pkt, pkt_len);
if (needs_close) {
DHCPv6SocketCloseSocket(sock);
}
return (ret);
}