X-Git-Url: http://git.archive.openwrt.org/?p=project%2Ffirewall3.git;a=blobdiff_plain;f=zones.c;h=79f037e98306602fe9f6fe50fd5571ca159642b1;hp=317acc822198300a3eda4999a03b6db28ed8d24e;hb=62863ea95d3c2c7dd0b56ac0f1dee5a4590ca70c;hpb=275a37dbf280bd471ebb2c673267c49a81071bbb diff --git a/zones.c b/zones.c index 317acc8..79f037e 100644 --- a/zones.c +++ b/zones.c @@ -20,38 +20,54 @@ #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), @@ -77,48 +93,21 @@ static struct fw3_option zone_opts[] = { 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, +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; @@ -140,6 +129,7 @@ resolve_networks(struct uci_element *e, struct fw3_zone *zone) continue; } + tmp->network = net; list_add_tail(&tmp->list, &zone->devices); } } @@ -162,6 +152,11 @@ fw3_alloc_zone(void) 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; @@ -189,11 +184,20 @@ fw3_load_zones(struct fw3_state *state, struct uci_package *p) if (!zone) continue; - fw3_parse_options(zone, zone_opts, ARRAY_SIZE(zone_opts), s); + fw3_parse_options(zone, fw3_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"); @@ -215,13 +219,23 @@ fw3_load_zones(struct fw3_state *state, struct uci_package *p) if (zone->masq) { - setbit(zone->dst_flags, FW3_TARGET_SNAT); + setbit(zone->flags[0], FW3_FLAG_SNAT); zone->conntrack = true; } - setbit(zone->src_flags, zone->policy_input); - setbit(zone->dst_flags, zone->policy_output); - setbit(zone->dst_flags, 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); } @@ -230,46 +244,56 @@ fw3_load_zones(struct fw3_state *state, struct uci_package *p) static void print_zone_chain(enum fw3_table table, enum fw3_family family, - struct fw3_zone *zone, struct fw3_state *state) + struct fw3_zone *zone, bool reload, struct fw3_state *state) { - bool s, d; + bool c, r; + uint32_t custom_mask = ~0; if (!fw3_is_family(zone, family)) return; - setbit(zone->dst_flags, family); + 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); if (!zone->conntrack && !state->defaults.drop_invalid) - setbit(zone->dst_flags, FW3_TARGET_NOTRACK); + set(zone->flags, family, FW3_FLAG_NOTRACK); - s = print_chains(table, family, ":%s - [0:0]\n", zone->name, - zone->src_flags, src_chains, ARRAY_SIZE(src_chains)); + c = fw3_pr_rulespec(table, family, zone->flags, custom_mask, zone_chains, + ":%s - [0:0]\n", zone->name); - d = print_chains(table, family, ":%s - [0:0]\n", zone->name, - zone->dst_flags, dst_chains, ARRAY_SIZE(dst_chains)); + r = fw3_pr_rulespec(table, family, zone->flags, 0, zone_rules, + "-A %s\n", zone->name); - if (s || d) + 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) + struct fw3_address *sub, bool reload, bool disable_notrack) { - enum fw3_target t; + enum fw3_flag t; #define jump_target(t) \ - ((t == FW3_TARGET_REJECT) ? "reject" : fw3_flag_names[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 (hasbit(zone->src_flags, t)) + if (has(zone->flags, family, fw3_to_src_target(t))) { fw3_pr("-A zone_%s_src_%s", zone->name, fw3_flag_names[t]); fw3_format_in_out(dev, NULL); @@ -278,7 +302,7 @@ print_interface_rule(enum fw3_table table, enum fw3_family family, fw3_pr(" -j %s\n", jump_target(t)); } - if (hasbit(zone->dst_flags, t)) + if (has(zone->flags, family, t)) { fw3_pr("-A zone_%s_dest_%s", zone->name, fw3_flag_names[t]); fw3_format_in_out(NULL, dev); @@ -308,7 +332,7 @@ print_interface_rule(enum fw3_table table, enum fw3_family family, } else if (table == FW3_TABLE_NAT) { - if (hasbit(zone->dst_flags, FW3_TARGET_DNAT)) + if (has(zone->flags, family, FW3_FLAG_DNAT)) { fw3_pr("-A delegate_prerouting"); fw3_format_in_out(dev, NULL); @@ -317,7 +341,7 @@ print_interface_rule(enum fw3_table table, enum fw3_family family, fw3_pr(" -j zone_%s_prerouting\n", zone->name); } - if (hasbit(zone->dst_flags, FW3_TARGET_SNAT)) + if (has(zone->flags, family, FW3_FLAG_SNAT)) { fw3_pr("-A delegate_postrouting"); fw3_format_in_out(NULL, dev); @@ -365,7 +389,7 @@ print_interface_rule(enum fw3_table table, enum fw3_family family, static void print_interface_rules(enum fw3_table table, enum fw3_family family, - struct fw3_zone *zone, bool disable_notrack) + struct fw3_zone *zone, bool reload, bool disable_notrack) { struct fw3_device *dev; struct fw3_address *sub; @@ -379,18 +403,18 @@ print_interface_rules(enum fw3_table table, enum fw3_family family, if (!dev && !sub) continue; - print_interface_rule(table, family, zone, dev, sub, disable_notrack); + print_interface_rule(table, family, zone, dev, sub, reload, disable_notrack); } } static void print_zone_rule(enum fw3_table table, enum fw3_family family, - struct fw3_zone *zone, bool disable_notrack) + struct fw3_zone *zone, bool reload, bool disable_notrack) { struct fw3_address *msrc; struct fw3_address *mdest; - enum fw3_target t; + enum fw3_flag t; if (!fw3_is_family(zone, family)) return; @@ -409,9 +433,9 @@ print_zone_rule(enum fw3_table table, enum fw3_family family, if (zone->log) { - for (t = FW3_TARGET_REJECT; t <= FW3_TARGET_DROP; t++) + for (t = FW3_FLAG_REJECT; t <= FW3_FLAG_DROP; t++) { - if (hasbit(zone->src_flags, t)) + if (has(zone->flags, family, fw3_to_src_target(t))) { fw3_pr("-A zone_%s_src_%s", zone->name, fw3_flag_names[t]); fw3_format_limit(&zone->log_limit); @@ -419,7 +443,7 @@ print_zone_rule(enum fw3_table table, enum fw3_family family, fw3_flag_names[t], zone->name); } - if (hasbit(zone->dst_flags, t)) + if (has(zone->flags, family, t)) { fw3_pr("-A zone_%s_dest_%s", zone->name, fw3_flag_names[t]); fw3_format_limit(&zone->log_limit); @@ -448,53 +472,51 @@ print_zone_rule(enum fw3_table table, enum fw3_family family, break; } - print_interface_rules(table, family, zone, disable_notrack); + print_interface_rules(table, family, zone, reload, disable_notrack); } void fw3_print_zone_chains(enum fw3_table table, enum fw3_family family, - struct fw3_state *state) + bool reload, struct fw3_state *state) { struct fw3_zone *zone; list_for_each_entry(zone, &state->zones, list) - print_zone_chain(table, family, zone, state); + print_zone_chain(table, family, zone, reload, state); } void fw3_print_zone_rules(enum fw3_table table, enum fw3_family family, - struct fw3_state *state) + bool reload, struct fw3_state *state) { 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(table, family, zone, reload, state->defaults.drop_invalid); } void fw3_flush_zones(enum fw3_table table, enum fw3_family family, - bool pass2, struct fw3_state *state) + bool pass2, bool reload, struct fw3_state *state) { struct fw3_zone *z, *tmp; - int mask = (1 << FW3_FAMILY_V4) | (1 << FW3_FAMILY_V6); + 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_safe(z, tmp, &state->running_zones, running_list) { - if (!hasbit(z->dst_flags, family)) + if (!has(z->flags, family, table)) continue; - print_chains(table, family, pass2 ? "-X %s\n" : "-F %s\n", - z->name, z->src_flags, src_chains, ARRAY_SIZE(src_chains)); - - print_chains(table, family, pass2 ? "-X %s\n" : "-F %s\n", - z->name, z->dst_flags, dst_chains, ARRAY_SIZE(dst_chains)); + fw3_pr_rulespec(table, family, z->flags, custom_mask, zone_chains, + pass2 ? "-X %s\n" : "-F %s\n", z->name); if (pass2) { - delbit(z->dst_flags, family); - - if (!(z->dst_flags & mask)) - fw3_set_running(z, NULL); + del(z->flags, family, table); } } } @@ -520,16 +542,3 @@ fw3_lookup_zone(struct fw3_state *state, const char *name, bool running) 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); - - fw3_free_list(&zone->masq_src); - fw3_free_list(&zone->masq_dest); - - free(zone); -}