+ for (i = 0; i < sizeof(v6->s6_addr); i++)
+ {
+ b = (rem > 8) ? 8 : rem;
+ v6->s6_addr[i] = (uint8_t)(0xFF << (8 - b));
+ rem -= b;
+ }
+
+ if (bits < 0)
+ for (i = 0; i < sizeof(v6->s6_addr); i++)
+ v6->s6_addr[i] = ~v6->s6_addr[i];
+ }
+ else
+ {
+ if (bits < -32 || bits > 32)
+ return false;
+
+ v4 = mask;
+ v4->s_addr = bits ? htonl(~((1 << (32 - abs(bits))) - 1)) : 0;
+
+ if (bits < 0)
+ v4->s_addr = ~v4->s_addr;
+ }
+
+ return true;
+}
+
+void
+fw3_flush_conntrack(void *state)
+{
+ bool found;
+ struct fw3_state *s = state;
+ struct fw3_address *addr;
+ struct fw3_device *dev;
+ struct fw3_zone *zone;
+ struct ifaddrs *ifaddr, *ifa;
+ struct sockaddr_in *sin;
+ struct sockaddr_in6 *sin6;
+ char buf[INET6_ADDRSTRLEN];
+ FILE *ct;
+
+ if (!state)
+ {
+ if ((ct = fopen("/proc/net/nf_conntrack", "w")) != NULL)
+ {
+ info(" * Flushing conntrack table ...");
+
+ fwrite("f\n", 1, 2, ct);
+ fclose(ct);
+ }
+
+ return;
+ }
+
+ if (getifaddrs(&ifaddr))
+ {
+ warn("Cannot get interface addresses: %s", strerror(errno));
+ return;
+ }
+
+ if ((ct = fopen("/proc/net/nf_conntrack", "w")) != NULL)
+ {
+ list_for_each_entry(zone, &s->zones, list)
+ list_for_each_entry(addr, &zone->old_addrs, list)
+ {
+ found = false;
+
+ list_for_each_entry(dev, &zone->devices, list)
+ {
+ for (ifa = ifaddr; ifa && !found; ifa = ifa->ifa_next)
+ {
+ if (!ifa->ifa_addr || strcmp(dev->name, ifa->ifa_name))
+ continue;
+
+ sin = (struct sockaddr_in *)ifa->ifa_addr;
+ sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
+
+ if (addr->family == FW3_FAMILY_V4 &&
+ sin->sin_family == AF_INET)
+ {
+ found = !memcmp(&addr->address.v4, &sin->sin_addr,
+ sizeof(sin->sin_addr));
+ }
+ else if (addr->family == FW3_FAMILY_V6 &&
+ sin6->sin6_family == AF_INET6)
+ {
+ found = !memcmp(&addr->address.v6, &sin6->sin6_addr,
+ sizeof(sin6->sin6_addr));
+ }
+ }
+
+ if (found)
+ break;
+ }
+
+ if (!found)
+ {
+ inet_ntop(addr->family == FW3_FAMILY_V4 ? AF_INET : AF_INET6,
+ &addr->address.v4, buf, sizeof(buf));
+
+ info(" * Flushing conntrack: %s", buf);
+ fprintf(ct, "%s\n", buf);
+ }
+ }
+
+ fclose(ct);
+ }
+
+ freeifaddrs(ifaddr);
+}
+
+bool fw3_attr_parse_name_type(struct blob_attr *entry, const char **name, const char **type)
+{
+ struct blob_attr *opt;
+ unsigned orem;
+
+ if (!type || !name)
+ return false;
+
+ *type = NULL;
+
+ blobmsg_for_each_attr(opt, entry, orem)
+ if (!strcmp(blobmsg_name(opt), "type"))
+ *type = blobmsg_get_string(opt);
+ else if (!strcmp(blobmsg_name(opt), "name"))
+ *name = blobmsg_get_string(opt);
+
+ return *type != NULL ? true : false;
+}
+
+const char *
+fw3_protoname(void *proto)
+{
+ static char buf[sizeof("4294967295")];
+ struct fw3_protocol *p = proto;
+ struct protoent *pe;
+
+ if (!p)
+ return "?";
+
+ pe = getprotobynumber(p->protocol);
+
+ if (!pe)
+ {
+ snprintf(buf, sizeof(buf), "%u", p->protocol);
+ return buf;
+ }