#include "ubus.h"
-static struct fw3_option zone_opts[] = {
+#define C(f, tbl, tgt, name) \
+ { FW3_FAMILY_##f, FW3_TABLE_##tbl, FW3_TARGET_##tgt, name }
+
+struct chain {
+ enum fw3_family family;
+ enum fw3_table table;
+ enum fw3_target target;
+ const char *name;
+};
+
+static const struct chain src_chains[] = {
+ C(ANY, FILTER, UNSPEC, "zone_%s_input"),
+ C(ANY, FILTER, UNSPEC, "zone_%s_output"),
+ C(ANY, FILTER, UNSPEC, "zone_%s_forward"),
+
+ C(ANY, FILTER, ACCEPT, "zone_%s_src_ACCEPT"),
+ C(ANY, FILTER, REJECT, "zone_%s_src_REJECT"),
+ C(ANY, FILTER, DROP, "zone_%s_src_DROP"),
+};
+
+static const struct chain dst_chains[] = {
+ C(ANY, FILTER, ACCEPT, "zone_%s_dest_ACCEPT"),
+ C(ANY, FILTER, REJECT, "zone_%s_dest_REJECT"),
+ C(ANY, FILTER, DROP, "zone_%s_dest_DROP"),
+
+ C(V4, NAT, SNAT, "zone_%s_postrouting"),
+ C(V4, NAT, DNAT, "zone_%s_prerouting"),
+
+ C(ANY, FILTER, CUSTOM_CHAINS, "input_%s_rule"),
+ C(ANY, FILTER, CUSTOM_CHAINS, "output_%s_rule"),
+ C(ANY, FILTER, CUSTOM_CHAINS, "forwarding_%s_rule"),
+
+ C(V4, NAT, CUSTOM_CHAINS, "prerouting_%s_rule"),
+ C(V4, NAT, CUSTOM_CHAINS, "postrouting_%s_rule"),
+};
+
+const struct fw3_option fw3_zone_opts[] = {
+ FW3_OPT("enabled", bool, zone, enabled),
+
FW3_OPT("name", string, zone, name),
+ FW3_OPT("family", family, zone, family),
FW3_LIST("network", device, zone, networks),
FW3_LIST("device", device, zone, devices),
FW3_OPT("log", bool, zone, log),
FW3_OPT("log_limit", limit, zone, log_limit),
+
+ { }
};
+static bool
+print_chains(enum fw3_table table, enum fw3_family family,
+ const char *fmt, const char *name, uint16_t targets,
+ const struct chain *chains, int n)
+{
+ bool rv = false;
+ char cn[128] = { 0 };
+ const struct chain *c;
+
+ for (c = chains; n > 0; c++, n--)
+ {
+ if (!fw3_is_family(c, family))
+ continue;
+
+ if (c->table != table)
+ continue;
+
+ if ((c->target != FW3_TARGET_UNSPEC) && !hasbit(targets, c->target))
+ continue;
+
+ snprintf(cn, sizeof(cn), c->name, name);
+ fw3_pr(fmt, cn);
+
+ rv = true;
+ }
+
+ return rv;
+}
+
static void
check_policy(struct uci_element *e, enum fw3_target *pol, enum fw3_target def,
const char *name)
}
}
+struct fw3_zone *
+fw3_alloc_zone(void)
+{
+ struct fw3_zone *zone;
+
+ zone = malloc(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);
+
+ zone->enabled = true;
+ zone->custom_chains = true;
+ zone->log_limit.rate = 10;
+
+ return zone;
+}
+
void
fw3_load_zones(struct fw3_state *state, struct uci_package *p)
{
if (strcmp(s->type, "zone"))
continue;
- zone = malloc(sizeof(*zone));
+ zone = fw3_alloc_zone();
if (!zone)
continue;
- memset(zone, 0, sizeof(*zone));
+ fw3_parse_options(zone, fw3_zone_opts, s);
- 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);
-
- zone->log_limit.rate = 10;
-
- fw3_parse_options(zone, zone_opts, ARRAY_SIZE(zone_opts), s);
+ if (!zone->enabled)
+ {
+ fw3_free_zone(zone);
+ continue;
+ }
if (!zone->extra_dest)
zone->extra_dest = zone->extra_src;
+ if (!defs->custom_chains && zone->custom_chains)
+ zone->custom_chains = false;
+
if (!zone->name || !*zone->name)
{
warn_elem(e, "has no name - ignoring");
if (zone->masq)
{
- zone->has_dest_target[FW3_TARGET_SNAT] = true;
+ setbit(zone->dst_flags, FW3_TARGET_SNAT);
zone->conntrack = true;
}
- zone->has_src_target[zone->policy_input] = true;
- zone->has_dest_target[zone->policy_output] = true;
- zone->has_dest_target[zone->policy_forward] = true;
+ if (zone->custom_chains)
+ {
+ setbit(zone->dst_flags, FW3_TARGET_SNAT);
+ setbit(zone->dst_flags, FW3_TARGET_DNAT);
+ }
+
+ setbit(zone->src_flags, zone->policy_input);
+ setbit(zone->dst_flags, zone->policy_output);
+ setbit(zone->dst_flags, zone->policy_forward);
list_add_tail(&zone->list, &state->zones);
}
static void
print_zone_chain(enum fw3_table table, enum fw3_family family,
- struct fw3_zone *zone, bool disable_notrack)
+ struct fw3_zone *zone, struct fw3_state *state)
{
- enum fw3_target t;
- const char *targets[] = {
- "(bug)",
- "ACCEPT",
- "REJECT",
- "DROP",
- };
+ bool s, d;
+ uint16_t mask = ~0;
if (!fw3_is_family(zone, family))
return;
- switch (table)
- {
- case FW3_TABLE_FILTER:
- info(" * Zone '%s'", zone->name);
+ setbit(zone->dst_flags, family);
- for (t = FW3_TARGET_ACCEPT; t <= FW3_TARGET_DROP; t++)
- {
- if (zone->has_src_target[t])
- fw3_pr(":zone_%s_src_%s - [0:0]\n", zone->name, targets[t]);
+ /* user chains already loaded, don't create again */
+ if (hasbit(zone->dst_flags, FW3_TARGET_CUSTOM_CHAINS))
+ delbit(mask, FW3_TARGET_CUSTOM_CHAINS);
- if (zone->has_dest_target[t])
- fw3_pr(":zone_%s_dest_%s - [0:0]\n", zone->name, targets[t]);
- }
+ if (zone->custom_chains)
+ setbit(zone->dst_flags, FW3_TARGET_CUSTOM_CHAINS);
- fw3_pr(":zone_%s_forward - [0:0]\n", zone->name);
- fw3_pr(":zone_%s_input - [0:0]\n", zone->name);
- fw3_pr(":zone_%s_output - [0:0]\n", zone->name);
- break;
+ if (!zone->conntrack && !state->defaults.drop_invalid)
+ setbit(zone->dst_flags, FW3_TARGET_NOTRACK);
- case FW3_TABLE_NAT:
- if (family == FW3_FAMILY_V4)
+ s = print_chains(table, family, ":%s - [0:0]\n", zone->name,
+ zone->src_flags & mask,
+ src_chains, ARRAY_SIZE(src_chains));
+
+ d = print_chains(table, family, ":%s - [0:0]\n", zone->name,
+ zone->dst_flags & mask,
+ dst_chains, ARRAY_SIZE(dst_chains));
+
+ if (zone->custom_chains)
+ {
+ if (table == FW3_TABLE_FILTER)
{
- info(" * Zone '%s'", zone->name);
+ fw3_pr("-A zone_%s_input -j input_%s_rule "
+ "-m comment --comment \"user chain for %s input\"\n",
+ zone->name, zone->name, zone->name);
- if (zone->has_dest_target[FW3_TARGET_SNAT])
- fw3_pr(":zone_%s_postrouting - [0:0]\n", zone->name);
+ fw3_pr("-A zone_%s_output -j output_%s_rule "
+ "-m comment --comment \"user chain for %s output\"\n",
+ zone->name, zone->name, zone->name);
- if (zone->has_dest_target[FW3_TARGET_DNAT])
- fw3_pr(":zone_%s_prerouting - [0:0]\n", zone->name);
+ fw3_pr("-A zone_%s_forward -j forwarding_%s_rule "
+ "-m comment --comment \"user chain for %s forwarding\"\n",
+ zone->name, zone->name, zone->name);
}
- break;
-
- case FW3_TABLE_RAW:
- if (!zone->conntrack && !disable_notrack)
+ else if (table == FW3_TABLE_NAT)
{
- info(" * Zone '%s'", zone->name);
- fw3_pr(":zone_%s_notrack - [0:0]\n", zone->name);
+ fw3_pr("-A zone_%s_prerouting -j prerouting_%s_rule "
+ "-m comment --comment \"user chain for %s prerouting\"\n",
+ zone->name, zone->name, zone->name);
+
+ fw3_pr("-A zone_%s_postrouting -j postrouting_%s_rule "
+ "-m comment --comment \"user chain for %s postrouting\"\n",
+ zone->name, zone->name, zone->name);
}
- break;
+ }
- case FW3_TABLE_MANGLE:
- break;
+ if (s || d)
+ {
+ info(" * Zone '%s'", zone->name);
+ fw3_set_running(zone, &state->running_zones);
}
}
struct fw3_address *sub, bool disable_notrack)
{
enum fw3_target t;
- const char *targets[] = {
- "(bug)", "(bug)",
- "ACCEPT", "ACCEPT",
- "REJECT", "reject",
- "DROP", "DROP",
- };
+
+#define jump_target(t) \
+ ((t == FW3_TARGET_REJECT) ? "reject" : fw3_flag_names[t])
if (table == FW3_TABLE_FILTER)
{
for (t = FW3_TARGET_ACCEPT; t <= FW3_TARGET_DROP; t++)
{
- if (zone->has_src_target[t])
+ if (hasbit(zone->src_flags, t))
{
- fw3_pr("-A zone_%s_src_%s", zone->name, targets[t*2]);
+ fw3_pr("-A zone_%s_src_%s", zone->name, fw3_flag_names[t]);
fw3_format_in_out(dev, NULL);
fw3_format_src_dest(sub, NULL);
fw3_format_extra(zone->extra_src);
- fw3_pr(" -j %s\n", targets[t*2+1]);
+ fw3_pr(" -j %s\n", jump_target(t));
}
- if (zone->has_dest_target[t])
+ if (hasbit(zone->dst_flags, t))
{
- fw3_pr("-A zone_%s_dest_%s", zone->name, targets[t*2]);
+ fw3_pr("-A zone_%s_dest_%s", zone->name, fw3_flag_names[t]);
fw3_format_in_out(NULL, dev);
fw3_format_src_dest(NULL, sub);
fw3_format_extra(zone->extra_dest);
- fw3_pr(" -j %s\n", targets[t*2+1]);
+ fw3_pr(" -j %s\n", jump_target(t));
}
}
}
else if (table == FW3_TABLE_NAT)
{
- if (zone->has_dest_target[FW3_TARGET_DNAT])
+ if (hasbit(zone->dst_flags, FW3_TARGET_DNAT))
{
- fw3_pr("-A PREROUTING");
+ fw3_pr("-A delegate_prerouting");
fw3_format_in_out(dev, NULL);
fw3_format_src_dest(sub, NULL);
fw3_format_extra(zone->extra_src);
fw3_pr(" -j zone_%s_prerouting\n", zone->name);
}
- if (zone->has_dest_target[FW3_TARGET_SNAT])
+ if (hasbit(zone->dst_flags, FW3_TARGET_SNAT))
{
- fw3_pr("-A POSTROUTING");
+ fw3_pr("-A delegate_postrouting");
fw3_format_in_out(NULL, dev);
fw3_format_src_dest(NULL, sub);
fw3_format_extra(zone->extra_dest);
struct fw3_address *mdest;
enum fw3_target t;
- const char *targets[] = {
- "(bug)",
- "ACCEPT",
- "REJECT",
- "DROP",
- "(bug)",
- "(bug)",
- "(bug)",
- };
if (!fw3_is_family(zone, family))
return;
{
case FW3_TABLE_FILTER:
fw3_pr("-A zone_%s_input -j zone_%s_src_%s\n",
- zone->name, zone->name, targets[zone->policy_input]);
+ zone->name, zone->name, fw3_flag_names[zone->policy_input]);
fw3_pr("-A zone_%s_forward -j zone_%s_dest_%s\n",
- zone->name, zone->name, targets[zone->policy_forward]);
+ zone->name, zone->name, fw3_flag_names[zone->policy_forward]);
fw3_pr("-A zone_%s_output -j zone_%s_dest_%s\n",
- zone->name, zone->name, targets[zone->policy_output]);
+ zone->name, zone->name, fw3_flag_names[zone->policy_output]);
if (zone->log)
{
for (t = FW3_TARGET_REJECT; t <= FW3_TARGET_DROP; t++)
{
- if (zone->has_src_target[t])
+ if (hasbit(zone->src_flags, t))
{
- fw3_pr("-A zone_%s_src_%s", zone->name, targets[t]);
+ fw3_pr("-A zone_%s_src_%s", zone->name, fw3_flag_names[t]);
fw3_format_limit(&zone->log_limit);
fw3_pr(" -j LOG --log-prefix \"%s(src %s)\"\n",
- targets[t], zone->name);
+ fw3_flag_names[t], zone->name);
}
- if (zone->has_dest_target[t])
+ if (hasbit(zone->dst_flags, t))
{
- fw3_pr("-A zone_%s_dest_%s", zone->name, targets[t]);
+ fw3_pr("-A zone_%s_dest_%s", zone->name, fw3_flag_names[t]);
fw3_format_limit(&zone->log_limit);
fw3_pr(" -j LOG --log-prefix \"%s(dest %s)\"\n",
- targets[t], zone->name);
+ fw3_flag_names[t], zone->name);
}
}
}
struct fw3_zone *zone;
list_for_each_entry(zone, &state->zones, list)
- print_zone_chain(table, family, zone, state->defaults.drop_invalid);
+ print_zone_chain(table, family, zone, state);
}
void
print_zone_rule(table, family, zone, state->defaults.drop_invalid);
}
+void
+fw3_flush_zones(enum fw3_table table, enum fw3_family family,
+ bool pass2, bool reload, struct fw3_state *state)
+{
+ struct fw3_zone *z, *tmp;
+ uint16_t mask = ~0;
+ uint16_t families = (1 << FW3_FAMILY_V4) | (1 << FW3_FAMILY_V6);
+
+ /* don't touch user chains on selective stop */
+ if (reload)
+ delbit(mask, FW3_DEFAULT_CUSTOM_CHAINS);
+
+ list_for_each_entry_safe(z, tmp, &state->running_zones, running_list)
+ {
+ if (!hasbit(z->dst_flags, family))
+ continue;
+
+ print_chains(table, family, pass2 ? "-X %s\n" : "-F %s\n",
+ z->name, z->src_flags & mask,
+ src_chains, ARRAY_SIZE(src_chains));
+
+ print_chains(table, family, pass2 ? "-X %s\n" : "-F %s\n",
+ z->name, z->dst_flags & mask,
+ dst_chains, ARRAY_SIZE(dst_chains));
+
+ if (pass2)
+ {
+ delbit(z->dst_flags, family);
+
+ if (!(z->dst_flags & families))
+ fw3_set_running(z, NULL);
+ }
+ }
+}
struct fw3_zone *
-fw3_lookup_zone(struct fw3_state *state, const char *name)
+fw3_lookup_zone(struct fw3_state *state, const char *name, bool running)
{
struct fw3_zone *z;
return NULL;
list_for_each_entry(z, &state->zones, list)
- if (!strcmp(z->name, name))
- return z;
-
- return NULL;
-}
+ {
+ if (strcmp(z->name, name))
+ continue;
-void
-fw3_free_zone(struct fw3_zone *zone)
-{
- fw3_free_list(&zone->networks);
- fw3_free_list(&zone->devices);
- fw3_free_list(&zone->subnets);
+ if (!running || z->running_list.next)
+ return z;
- fw3_free_list(&zone->masq_src);
- fw3_free_list(&zone->masq_dest);
+ break;
+ }
- free(zone);
+ return NULL;
}
projects / project / firewall3.git / blobdiff