#include "ubus.h"
-#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;
-};
+#define C(f, tbl, tgt, fmt) \
+ { FW3_FAMILY_##f, FW3_TABLE_##tbl, FW3_FLAG_##tgt, fmt }
+
+static const struct fw3_rule_spec zone_chains[] = {
+ C(ANY, FILTER, UNSPEC, "zone_%1$s_input"),
+ C(ANY, FILTER, UNSPEC, "zone_%1$s_output"),
+ C(ANY, FILTER, UNSPEC, "zone_%1$s_forward"),
+
+ C(ANY, FILTER, SRC_ACCEPT, "zone_%1$s_src_ACCEPT"),
+ C(ANY, FILTER, SRC_REJECT, "zone_%1$s_src_REJECT"),
+ C(ANY, FILTER, SRC_DROP, "zone_%1$s_src_DROP"),
+
+ C(ANY, FILTER, ACCEPT, "zone_%1$s_dest_ACCEPT"),
+ C(ANY, FILTER, REJECT, "zone_%1$s_dest_REJECT"),
+ C(ANY, FILTER, DROP, "zone_%1$s_dest_DROP"),
+
+ C(V4, NAT, SNAT, "zone_%1$s_postrouting"),
+ C(V4, NAT, DNAT, "zone_%1$s_prerouting"),
+
+ C(ANY, FILTER, CUSTOM_CHAINS, "input_%1$s_rule"),
+ C(ANY, FILTER, CUSTOM_CHAINS, "output_%1$s_rule"),
+ C(ANY, FILTER, CUSTOM_CHAINS, "forwarding_%1$s_rule"),
-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(V4, NAT, CUSTOM_CHAINS, "prerouting_%1$s_rule"),
+ C(V4, NAT, CUSTOM_CHAINS, "postrouting_%1$s_rule"),
- 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"),
+#define R(dir1, dir2) \
+ "zone_%1$s_" #dir1 " -m comment --comment \"user chain for %1$s " \
+ #dir2 "\" -j " #dir2 "_%1$s_rule"
- C(ANY, RAW, NOTRACK, "zone_%s_notrack"),
+static const struct fw3_rule_spec zone_rules[] = {
+ C(ANY, FILTER, CUSTOM_CHAINS, R(input, input)),
+ C(ANY, FILTER, CUSTOM_CHAINS, R(output, output)),
+ C(ANY, FILTER, CUSTOM_CHAINS, R(forward, forwarding)),
+
+ C(V4, NAT, CUSTOM_CHAINS, R(prerouting, prerouting)),
+ C(V4, NAT, CUSTOM_CHAINS, R(postrouting, postrouting)),
+
+ { }
};
-static struct fw3_option zone_opts[] = {
+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("output", target, zone, policy_output),
FW3_OPT("masq", bool, zone, masq),
- FW3_LIST("masq_src", address, zone, masq_src),
- FW3_LIST("masq_dest", address, zone, masq_dest),
+ FW3_LIST("masq_src", network, zone, masq_src),
+ FW3_LIST("masq_dest", network, zone, masq_dest),
FW3_OPT("extra", string, zone, extra_src),
FW3_OPT("extra_src", string, zone, extra_src),
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, uint8_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) && !(targets & (1 << 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,
+check_policy(struct uci_element *e, enum fw3_flag *pol, enum fw3_flag def,
const char *name)
{
- if (*pol == FW3_TARGET_UNSPEC)
+ if (*pol == FW3_FLAG_UNSPEC)
{
warn_elem(e, "has no %s policy specified, using default", name);
*pol = def;
}
- else if (*pol > FW3_TARGET_DROP)
+ else if (*pol > FW3_FLAG_DROP)
{
warn_elem(e, "has invalid %s policy, using default", name);
*pol = def;
continue;
}
+ tmp->network = net;
list_add_tail(&tmp->list, &zone->devices);
}
}
+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);
+
+ INIT_LIST_HEAD(&zone->running_networks);
+ INIT_LIST_HEAD(&zone->running_devices);
+
+ 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));
-
- 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, fw3_zone_opts, s);
- 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 |= (1 << FW3_TARGET_SNAT);
+ setbit(zone->flags[0], FW3_FLAG_SNAT);
zone->conntrack = true;
}
- zone->has_src_target |= (1 << zone->policy_input);
- zone->has_dest_target |= (1 << zone->policy_output);
- zone->has_dest_target |= (1 << zone->policy_forward);
+ if (zone->custom_chains)
+ {
+ setbit(zone->flags[0], FW3_FLAG_SNAT);
+ setbit(zone->flags[0], FW3_FLAG_DNAT);
+ }
+
+ 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[1], fw3_to_src_target(zone->policy_input));
+ setbit(zone->flags[1], zone->policy_output);
+ setbit(zone->flags[1], 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)
+print_zone_chain(struct fw3_state *state, enum fw3_family family,
+ enum fw3_table table, bool reload, struct fw3_zone *zone)
{
- bool s, d;
+ bool c, r;
+ uint32_t custom_mask = ~0;
if (!fw3_is_family(zone, family))
return;
- if (!zone->conntrack && !disable_notrack)
- zone->has_dest_target |= (1 << FW3_TARGET_NOTRACK);
+ set(zone->flags, family, table);
+
+ /* Don't touch user chains on reload */
+ if (reload)
+ delbit(custom_mask, FW3_FLAG_CUSTOM_CHAINS);
+
+ if (zone->custom_chains)
+ set(zone->flags, family, FW3_FLAG_CUSTOM_CHAINS);
- s = print_chains(table, family, ":%s - [0:0]\n", zone->name,
- zone->has_src_target, src_chains, ARRAY_SIZE(src_chains));
+ if (!zone->conntrack && !state->defaults.drop_invalid)
+ set(zone->flags, family, FW3_FLAG_NOTRACK);
- d = print_chains(table, family, ":%s - [0:0]\n", zone->name,
- zone->has_dest_target, dst_chains, ARRAY_SIZE(dst_chains));
+ c = fw3_pr_rulespec(table, family, zone->flags, custom_mask, zone_chains,
+ ":%s - [0:0]\n", zone->name);
- if (s || d)
+ r = fw3_pr_rulespec(table, family, zone->flags, 0, zone_rules,
+ "-A %s\n", zone->name);
+
+ if (c || r)
+ {
info(" * Zone '%s'", zone->name);
+ fw3_set_running(zone, &state->running_zones);
+
+ set(zone->flags, family, table);
+ }
}
static void
-print_interface_rule(enum fw3_table table, enum fw3_family family,
- struct fw3_zone *zone, struct fw3_device *dev,
- struct fw3_address *sub, bool disable_notrack)
+print_interface_rule(struct fw3_state *state, enum fw3_family family,
+ enum fw3_table table, bool reload, struct fw3_zone *zone,
+ struct fw3_device *dev, struct fw3_address *sub)
{
- enum fw3_target t;
- const char *targets[] = {
- "(bug)", "(bug)",
- "ACCEPT", "ACCEPT",
- "REJECT", "reject",
- "DROP", "DROP",
- };
+ bool disable_notrack = state->defaults.drop_invalid;
+
+ enum fw3_flag t;
+
+#define jump_target(t) \
+ ((t == FW3_FLAG_REJECT) ? "reject" : fw3_flag_names[t])
if (table == FW3_TABLE_FILTER)
{
- for (t = FW3_TARGET_ACCEPT; t <= FW3_TARGET_DROP; t++)
+ for (t = FW3_FLAG_ACCEPT; t <= FW3_FLAG_DROP; t++)
{
- if (zone->has_src_target & (1 << t))
+ if (has(zone->flags, family, fw3_to_src_target(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 & (1 << t))
+ if (has(zone->flags, family, 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 & (1 << FW3_TARGET_DNAT))
+ if (has(zone->flags, family, FW3_FLAG_DNAT))
{
fw3_pr("-A delegate_prerouting");
fw3_format_in_out(dev, NULL);
fw3_pr(" -j zone_%s_prerouting\n", zone->name);
}
- if (zone->has_dest_target & (1 << FW3_TARGET_SNAT))
+ if (has(zone->flags, family, FW3_FLAG_SNAT))
{
fw3_pr("-A delegate_postrouting");
fw3_format_in_out(NULL, dev);
}
static void
-print_interface_rules(enum fw3_table table, enum fw3_family family,
- struct fw3_zone *zone, bool disable_notrack)
+print_interface_rules(struct fw3_state *state, enum fw3_family family,
+ enum fw3_table table, bool reload, struct fw3_zone *zone)
{
struct fw3_device *dev;
struct fw3_address *sub;
if (!dev && !sub)
continue;
- print_interface_rule(table, family, zone, dev, sub, disable_notrack);
+ print_interface_rule(state, family, table, reload, zone, dev, sub);
}
}
static void
-print_zone_rule(enum fw3_table table, enum fw3_family family,
- struct fw3_zone *zone, bool disable_notrack)
+print_zone_rule(struct fw3_state *state, enum fw3_family family,
+ enum fw3_table table, bool reload, struct fw3_zone *zone)
{
struct fw3_address *msrc;
struct fw3_address *mdest;
- enum fw3_target t;
- const char *targets[] = {
- "(bug)",
- "ACCEPT",
- "REJECT",
- "DROP",
- "(bug)",
- "(bug)",
- "(bug)",
- };
+ enum fw3_flag t;
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++)
+ for (t = FW3_FLAG_REJECT; t <= FW3_FLAG_DROP; t++)
{
- if (zone->has_src_target & (1 << t))
+ if (has(zone->flags, family, fw3_to_src_target(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 & (1 << t))
+ if (has(zone->flags, family, 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);
}
}
}
fw3_foreach(msrc, &zone->masq_src)
fw3_foreach(mdest, &zone->masq_dest)
{
- fw3_pr("-A zone_%s_postrouting ", zone->name);
+ if (!fw3_is_family(msrc, family) ||
+ !fw3_is_family(mdest, family))
+ continue;
+
+ fw3_pr("-A zone_%s_postrouting", zone->name);
fw3_format_src_dest(msrc, mdest);
- fw3_pr("-j MASQUERADE\n");
+ fw3_pr(" -j MASQUERADE\n");
}
}
break;
break;
}
- print_interface_rules(table, family, zone, disable_notrack);
+ print_interface_rules(state, family, table, reload, zone);
}
void
-fw3_print_zone_chains(enum fw3_table table, enum fw3_family family,
- struct fw3_state *state)
+fw3_print_zone_chains(struct fw3_state *state, enum fw3_family family,
+ enum fw3_table table, bool reload)
{
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(state, family, table, reload, zone);
}
void
-fw3_print_zone_rules(enum fw3_table table, enum fw3_family family,
- struct fw3_state *state)
+fw3_print_zone_rules(struct fw3_state *state, enum fw3_family family,
+ enum fw3_table table, bool reload)
{
struct fw3_zone *zone;
list_for_each_entry(zone, &state->zones, list)
- print_zone_rule(table, family, zone, state->defaults.drop_invalid);
+ print_zone_rule(state, family, table, reload, zone);
}
void
-fw3_flush_zones(enum fw3_table table, enum fw3_family family,
- bool pass2, struct list_head *statefile)
+fw3_flush_zones(struct fw3_state *state, enum fw3_family family,
+ enum fw3_table table, bool reload, bool pass2)
{
- struct fw3_statefile_entry *e;
+ struct fw3_zone *z, *tmp;
+ uint32_t custom_mask = ~0;
+
+ /* don't touch user chains on selective stop */
+ if (reload)
+ delbit(custom_mask, FW3_FLAG_CUSTOM_CHAINS);
- list_for_each_entry(e, statefile, list)
+ list_for_each_entry_safe(z, tmp, &state->running_zones, running_list)
{
- if (e->type != FW3_TYPE_ZONE)
+ if (!has(z->flags, family, table))
continue;
- print_chains(table, family, pass2 ? "-X %s\n" : "-F %s\n",
- e->name, e->flags[0], src_chains, ARRAY_SIZE(src_chains));
+ fw3_pr_rulespec(table, family, z->flags, custom_mask, zone_chains,
+ pass2 ? "-X %s\n" : "-F %s\n", z->name);
+
+ if (pass2)
+ del(z->flags, family, table);
+ }
+}
+
+void
+fw3_hotplug_zones(struct fw3_state *state, bool add)
+{
+ struct fw3_zone *z;
+ struct fw3_device *d;
+
+ if (add)
+ {
+ list_for_each_entry(z, &state->running_zones, running_list)
+ {
+ if (!hasbit(z->flags[0], FW3_FLAG_HOTPLUG))
+ {
+ list_for_each_entry(d, &z->devices, list)
+ fw3_hotplug(add, z, d);
+
+ setbit(z->flags[0], FW3_FLAG_HOTPLUG);
+ }
+ }
+ }
+ else
+ {
+ list_for_each_entry(z, &state->running_zones, running_list)
+ {
+ if (hasbit(z->flags[0], FW3_FLAG_HOTPLUG))
+ {
+ list_for_each_entry(d, &z->running_devices, list)
+ fw3_hotplug(add, z, d);
- print_chains(table, family, pass2 ? "-X %s\n" : "-F %s\n",
- e->name, e->flags[1], dst_chains, ARRAY_SIZE(dst_chains));
+ delbit(z->flags[0], FW3_FLAG_HOTPLUG);
+ }
+ }
}
}
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))
+ {
+ if (strcmp(z->name, name))
+ continue;
+
+ if (!running || z->running_list.next)
return z;
+ break;
+ }
+
return NULL;
}
void
fw3_free_zone(struct fw3_zone *zone)
{
- fw3_free_list(&zone->networks);
- fw3_free_list(&zone->devices);
- fw3_free_list(&zone->subnets);
+ struct fw3_device *dev, *tmp;
- fw3_free_list(&zone->masq_src);
- fw3_free_list(&zone->masq_dest);
+ list_for_each_entry_safe(dev, tmp, &zone->running_devices, list)
+ {
+ list_del(&dev->list);
+ free(dev);
+ }
+
+ list_for_each_entry_safe(dev, tmp, &zone->running_networks, list)
+ {
+ list_del(&dev->list);
+ free(dev);
+ }
- free(zone);
+ fw3_free_object(zone, fw3_zone_opts);
}
projects / project / firewall3.git / blobdiff