C(V4, NAT, SNAT, "zone_%s_postrouting"),
C(V4, NAT, DNAT, "zone_%s_prerouting"),
+ C(ANY, RAW, NOTRACK, "zone_%s_notrack"),
+
C(ANY, FILTER, CUSTOM_CHAINS, "input_%s_rule"),
C(ANY, FILTER, CUSTOM_CHAINS, "output_%s_rule"),
C(ANY, FILTER, CUSTOM_CHAINS, "forwarding_%s_rule"),
FW3_OPT("__flags_v4", int, zone, flags[0]),
FW3_OPT("__flags_v6", int, zone, flags[1]),
+ FW3_LIST("__addrs", address, zone, old_addrs),
+
{ }
};
{
struct fw3_zone *zone;
- zone = malloc(sizeof(*zone));
-
+ zone = calloc(1, sizeof(*zone));
if (!zone)
return NULL;
- memset(zone, 0, sizeof(*zone));
-
INIT_LIST_HEAD(&zone->networks);
INIT_LIST_HEAD(&zone->devices);
INIT_LIST_HEAD(&zone->subnets);
INIT_LIST_HEAD(&zone->masq_src);
INIT_LIST_HEAD(&zone->masq_dest);
+ INIT_LIST_HEAD(&zone->old_addrs);
+
zone->enabled = true;
zone->custom_chains = true;
zone->log_limit.rate = 10;
continue;
}
+ if (strlen(zone->name) > FW3_ZONE_MAXNAMELEN)
+ {
+ warn_elem(e, "must not have a name longer than %u characters",
+ FW3_ZONE_MAXNAMELEN);
+ fw3_free_zone(zone);
+ continue;
+ }
+
+ fw3_ubus_zone_devices(zone);
+
if (list_empty(&zone->networks) && list_empty(&zone->devices) &&
list_empty(&zone->subnets) && !zone->extra_src)
{
}
setbit(zone->flags[0], fw3_to_src_target(zone->policy_input));
- setbit(zone->flags[0], zone->policy_output);
setbit(zone->flags[0], zone->policy_forward);
+ setbit(zone->flags[0], zone->policy_output);
setbit(zone->flags[1], fw3_to_src_target(zone->policy_input));
- setbit(zone->flags[1], zone->policy_output);
setbit(zone->flags[1], zone->policy_forward);
+ setbit(zone->flags[1], zone->policy_output);
list_add_tail(&zone->list, &state->zones);
}
bool reload, struct fw3_zone *zone,
struct fw3_device *dev, struct fw3_address *sub)
{
- bool disable_notrack = state->defaults.drop_invalid;
struct fw3_protocol tcp = { .protocol = 6 };
struct fw3_ipt_rule *r;
enum fw3_flag t;
r = fw3_ipt_rule_create(handle, NULL, dev, NULL, sub, NULL);
fw3_ipt_rule_target(r, jump_target(t));
fw3_ipt_rule_extra(r, zone->extra_src);
- fw3_ipt_rule_append(r, "zone_%s_src_%s", zone->name,
- fw3_flag_names[t]);
+ fw3_ipt_rule_replace(r, "zone_%s_src_%s", zone->name,
+ fw3_flag_names[t]);
}
if (has(zone->flags, handle->family, t))
r = fw3_ipt_rule_create(handle, NULL, NULL, dev, NULL, sub);
fw3_ipt_rule_target(r, jump_target(t));
fw3_ipt_rule_extra(r, zone->extra_dest);
- fw3_ipt_rule_append(r, "zone_%s_dest_%s", zone->name,
- fw3_flag_names[t]);
+ fw3_ipt_rule_replace(r, "zone_%s_dest_%s", zone->name,
+ fw3_flag_names[t]);
}
}
else
fw3_ipt_rule_extra(r, zone->extra_src);
- fw3_ipt_rule_append(r, "delegate_%s", chains[i]);
+ fw3_ipt_rule_replace(r, "delegate_%s", chains[i]);
}
}
else if (handle->table == FW3_TABLE_NAT)
r = fw3_ipt_rule_create(handle, NULL, dev, NULL, sub, NULL);
fw3_ipt_rule_target(r, "zone_%s_prerouting", zone->name);
fw3_ipt_rule_extra(r, zone->extra_src);
- fw3_ipt_rule_append(r, "delegate_prerouting");
+ fw3_ipt_rule_replace(r, "delegate_prerouting");
}
if (has(zone->flags, handle->family, FW3_FLAG_SNAT))
r = fw3_ipt_rule_create(handle, NULL, NULL, dev, NULL, sub);
fw3_ipt_rule_target(r, "zone_%s_postrouting", zone->name);
fw3_ipt_rule_extra(r, zone->extra_dest);
- fw3_ipt_rule_append(r, "delegate_postrouting");
+ fw3_ipt_rule_replace(r, "delegate_postrouting");
}
}
else if (handle->table == FW3_TABLE_MANGLE)
fw3_ipt_rule_comment(r, "%s (mtu_fix logging)", zone->name);
fw3_ipt_rule_target(r, "LOG");
fw3_ipt_rule_addarg(r, false, "--log-prefix", buf);
- fw3_ipt_rule_append(r, "mssfix");
+ fw3_ipt_rule_replace(r, "mssfix");
}
r = fw3_ipt_rule_create(handle, &tcp, NULL, dev, NULL, sub);
fw3_ipt_rule_comment(r, "%s (mtu_fix)", zone->name);
fw3_ipt_rule_target(r, "TCPMSS");
fw3_ipt_rule_addarg(r, false, "--clamp-mss-to-pmtu", NULL);
- fw3_ipt_rule_append(r, "mssfix");
+ fw3_ipt_rule_replace(r, "mssfix");
}
}
else if (handle->table == FW3_TABLE_RAW)
{
- if (!zone->conntrack && !disable_notrack)
+ if (has(zone->flags, handle->family, FW3_FLAG_NOTRACK))
{
r = fw3_ipt_rule_create(handle, NULL, dev, NULL, sub, NULL);
- fw3_ipt_rule_target(r, "CT");
- fw3_ipt_rule_addarg(r, false, "--notrack", NULL);
+ fw3_ipt_rule_target(r, "zone_%s_notrack", zone->name);
fw3_ipt_rule_extra(r, zone->extra_src);
- fw3_ipt_rule_append(r, "notrack");
+ fw3_ipt_rule_replace(r, "delegate_notrack");
}
}
}
print_zone_rule(struct fw3_ipt_handle *handle, struct fw3_state *state,
bool reload, struct fw3_zone *zone)
{
+ bool disable_notrack = state->defaults.drop_invalid;
struct fw3_address *msrc;
struct fw3_address *mdest;
struct fw3_ipt_rule *r;
switch (handle->table)
{
case FW3_TABLE_FILTER:
+ if (has(zone->flags, handle->family, FW3_FLAG_DNAT))
+ {
+ r = fw3_ipt_rule_new(handle);
+ fw3_ipt_rule_extra(r, "-m conntrack --ctstate DNAT");
+ fw3_ipt_rule_comment(r, "Accept port redirections");
+ fw3_ipt_rule_target(r, fw3_flag_names[FW3_FLAG_ACCEPT]);
+ fw3_ipt_rule_append(r, "zone_%s_input", zone->name);
+
+ r = fw3_ipt_rule_new(handle);
+ fw3_ipt_rule_extra(r, "-m conntrack --ctstate DNAT");
+ fw3_ipt_rule_comment(r, "Accept port forwards");
+ fw3_ipt_rule_target(r, fw3_flag_names[FW3_FLAG_ACCEPT]);
+ fw3_ipt_rule_append(r, "zone_%s_forward", zone->name);
+ }
+
r = fw3_ipt_rule_new(handle);
fw3_ipt_rule_target(r, "zone_%s_src_%s", zone->name,
fw3_flag_names[zone->policy_input]);
break;
case FW3_TABLE_RAW:
+ if (!zone->conntrack && !disable_notrack)
+ {
+ r = fw3_ipt_rule_new(handle);
+ fw3_ipt_rule_target(r, "CT");
+ fw3_ipt_rule_addarg(r, false, "--notrack", NULL);
+ fw3_ipt_rule_append(r, "zone_%s_notrack", zone->name);
+ }
+ break;
+
case FW3_TABLE_MANGLE:
break;
}
continue;
snprintf(chain, sizeof(chain), c->format, z->name);
- fw3_ipt_delete_rules(handle, chain);
+ fw3_ipt_flush_chain(handle, chain);
+
+ /* keep certain basic chains that do not depend on any settings to
+ avoid purging unrelated user rules pointing to them */
+ if (reload && !c->flag)
+ continue;
+
fw3_ipt_delete_chain(handle, chain);
}
return NULL;
}
-void
-fw3_free_zone(struct fw3_zone *zone)
+struct list_head *
+fw3_resolve_zone_addresses(struct fw3_zone *zone, struct fw3_address *addr)
{
- struct fw3_device *dev, *tmp;
+ struct fw3_device *net;
+ struct fw3_address *cur, *tmp;
+ struct list_head *all;
+
+ all = calloc(1, sizeof(*all));
+ if (!all)
+ return NULL;
+
+ INIT_LIST_HEAD(all);
- list_for_each_entry_safe(dev, tmp, &zone->devices, list)
+ if (addr && addr->set)
{
- list_del(&dev->list);
- free(dev);
- }
+ tmp = malloc(sizeof(*tmp));
- list_for_each_entry_safe(dev, tmp, &zone->networks, list)
+ if (tmp)
+ {
+ *tmp = *addr;
+ list_add_tail(&tmp->list, all);
+ }
+ }
+ else
{
- list_del(&dev->list);
- free(dev);
+ list_for_each_entry(net, &zone->networks, list)
+ fw3_ubus_address(all, net->name);
+
+ list_for_each_entry(cur, &zone->subnets, list)
+ {
+ tmp = malloc(sizeof(*tmp));
+
+ if (!tmp)
+ continue;
+
+ *tmp = *cur;
+ list_add_tail(&tmp->list, all);
+ }
}
- fw3_free_object(zone, fw3_zone_opts);
+ return all;
}
projects / project / firewall3.git / blobdiff