static int read_iface_prefix(const char *ip_str, int is_ipv6)
{
uint8_t family = is_ipv6 ? AF_INET6 : AF_INET;
char buf[16384];
unsigned int len;
struct {
struct nlmsghdr nlhdr;
struct ifaddrmsg addrmsg;
} msg;
struct nlmsghdr *retmsg;
int sock = SAFE_SOCKET(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
memset(&msg, 0, sizeof(msg));
msg.nlhdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
msg.nlhdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_ROOT;
msg.nlhdr.nlmsg_type = RTM_GETADDR;
msg.addrmsg.ifa_family = family;
SAFE_SEND(1, sock, &msg, msg.nlhdr.nlmsg_len, 0);
len = recv(sock, buf, sizeof(buf), 0);
retmsg = (struct nlmsghdr *)buf;
while NLMSG_OK(retmsg, len) {
char ifname[IFNAMSIZ];
struct ifaddrmsg *retaddr;
struct rtattr *retrta;
char pradd[128];
int attlen;
retaddr = (struct ifaddrmsg *)NLMSG_DATA(retmsg);
retrta = (struct rtattr *)IFA_RTA(retaddr);
attlen = IFA_PAYLOAD(retmsg);
while RTA_OK(retrta, attlen) {
if (retrta->rta_type == IFA_ADDRESS) {
inet_ntop(family, RTA_DATA(retrta), pradd,
sizeof(pradd));
if_indextoname(retaddr->ifa_index, ifname);
if (!strcmp(pradd, ip_str)) {
prefix = retaddr->ifa_prefixlen;
iface = strdup(ifname);
return 0;
}
}
retrta = RTA_NEXT(retrta, attlen);
}
retmsg = NLMSG_NEXT(retmsg, len);
}
return -1;
}
void ProfilerSocket::SendNetworkMessage( NetworkMessage nm )
{
UINT16 mess = nm;
SAFE_SEND( _s, mess );
if ( !_bSentApplicationID )
{
if ( nm != INITIALIZE )
SendUINT32( _nApplicationID );
_bSentApplicationID = true;
}
}
void ProfilerSocket::SendFunctionID( FunctionID fid )
{
SAFE_SEND( _s, fid );
}
void ProfilerSocket::SendThreadID( ThreadID tid )
{
SAFE_SEND( _s, tid );
}
void ProfilerSocket::SendAppDomainID( AppDomainID aid )
{
SAFE_SEND( _s, aid );
}
void ProfilerSocket::SendUINT64( UINT64 ui )
{
SAFE_SEND( _s, ui );
}
void ProfilerSocket::SendUINT32( UINT32 ui )
{
SAFE_SEND( _s, ui );
}
void ProfilerSocket::SendBool( bool b )
{
SAFE_SEND( _s, b );
}
