diff options
Diffstat (limited to 'lib/nat_setgroupmap.c')
| -rw-r--r-- | lib/nat_setgroupmap.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/lib/nat_setgroupmap.c b/lib/nat_setgroupmap.c new file mode 100644 index 0000000..ccf7864 --- /dev/null +++ b/lib/nat_setgroupmap.c @@ -0,0 +1,32 @@ +/* + * Copyright (C) 2003 by Darren Reed. + * + * See the IPFILTER.LICENCE file for details on licencing. + */ +#if !defined(lint) +static const char rcsid[] = "@(#)$Id: nat_setgroupmap.c,v 1.1.4.1 2006/06/16 17:21:07 darrenr Exp $"; +#endif + +#include "ipf.h" + +void nat_setgroupmap(n) +ipnat_t *n; +{ + if (n->in_outmsk == n->in_inmsk) + n->in_ippip = 1; + else if (n->in_flags & IPN_AUTOPORTMAP) { + n->in_ippip = ~ntohl(n->in_inmsk); + if (n->in_outmsk != 0xffffffff) + n->in_ippip /= (~ntohl(n->in_outmsk) + 1); + n->in_ippip++; + if (n->in_ippip == 0) + n->in_ippip = 1; + n->in_ppip = USABLE_PORTS / n->in_ippip; + } else { + n->in_space = USABLE_PORTS * ~ntohl(n->in_outmsk); + n->in_nip = 0; + if (!(n->in_ppip = n->in_pmin)) + n->in_ppip = 1; + n->in_ippip = USABLE_PORTS / n->in_ppip; + } +} |
