Hi
I am pretty much desperate at this moment with the problem. I don't
understand why I am kept getting "invalid argument" from commit. I am
using 1.4.7 and the kernel is 2.6.33.
Can someone please point me to the right direction? How can I debug this issue?
Thanks,
p
On Sat, Jul 10, 2010 at 11:15 PM, Pete Kay <petedao@xxxxxxxxx> wrote:
> Hi,
>
> I have written a very simple program to add iptables rule, but I am
> kept getting " Too many levels of symbolic links" .
>
> Does anyone know what is wrong?
>
>
> int ret = 0;
> iptc_handle_t h = iptc_init("nat");
>
> struct ipt_entry_match *match;
> struct ipt_udp *match_udp;
> struct ipt_entry_target *target;
> char callee_inhibitor_buf[IPTC_FULL_SIZE];
> struct ipt_entry *entry = (struct ipt_entry *) callee_inhibitor_buf;
>
>
> memset(entry, 0, IPTC_FULL_SIZE);
> entry->ip.proto = IPPROTO_UDP;
> entry->ip.src.s_addr = inet_addr("192.168.3.2");
>
> memset(&entry->ip.smsk, 255, sizeof(struct in_addr));
> entry ->ip.smsk.s_addr = 0xffffffff;
> entry->ip.dst.s_addr = inet_addr("200.168.3.3");
> entry ->ip.dmsk.s_addr = 0xffffffff;
> entry->target_offset = IPTC_ENTRY_SIZE + IPTC_MATCH_SIZE;
> entry->next_offset = IPTC_FULL_SIZE;
> match = (struct ipt_entry_match *) entry->elems;
> // match = (struct ipt_entry_match *)entry->elems;
> match->u.user.match_size = IPTC_MATCH_SIZE;
> strcpy(match->u.user.name, "udp");
> match_udp = (struct ipt_udp*) &match->data;
> match_udp->spts[0] = 5060;match_udp->spts[1] = 5060;
> match_udp->dpts[0] = 5070;match_udp->dpts[1] = 5070;
> target = (struct ipt_entry_target*) (match + IPTC_MATCH_SIZE);
>
> target->u.user.target_size = IPTC_TARGET_SIZE;
> strcpy(target->u.user.name, "ACCEPT");
> ret = iptc_append_entry ("PREROUTING", entry, h);
> if (!ret) {
> printf("append : %s\n", iptc_strerror(errno));
> }
> ret =iptc_commit(h);
> printf("commit =[%i]\n", ret);
> if (!ret) {
> printf("commit: %s\n", iptc_strerror(errno));
> }
>
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