int
dnstcppkt::input (int fd)
{
compact ();
u_int sz = pktsize ();
if (sz > inbufsize) {
inbufsize = sz;
inbuf = static_cast<u_char *> (xrealloc (inbuf, inbufsize));
}
if (inbufpos < sz) {
int n = read (fd, inbuf + inbufpos, inbufsize - inbufpos);
if (n > 0)
inbufpos += n;
else if (!n || errno != EAGAIN)
return -1;
}
return inbufpos >= pktsize ();
}
bool
dnstcppkt::getpkt (u_char **pp, size_t *sp)
{
u_int sz = pktsize ();
if (sz > inbufpos - inbufused)
return false;
*pp = inbuf + inbufused + 2;
*sp = sz - 2;
inbufused += sz;
return true;
}