static bool print_rules = false;
-static bool skip_family[FW3_FAMILY_V6 + 1] = { false };
+static enum fw3_family use_family = FW3_FAMILY_ANY;
+
+static const char *families[] = {
+ "(bug)",
+ "IPv4",
+ "IPv6",
+};
+
+static const char *tables[] = {
+ "filter",
+ "nat",
+ "mangle",
+ "raw",
+};
static struct fw3_state *
fw3_load_redirects(state, p);
fw3_load_forwards(state, p);
- if (state->defaults.disable_ipv6 && !skip_family[FW3_FAMILY_V6])
- {
- warn("IPv6 rules globally disabled in configuration");
- skip_family[FW3_FAMILY_V6] = true;
- }
-
return state;
}
return true;
}
+#define family_flag(f) \
+ (f == FW3_FAMILY_V4 ? FW3_DEFAULT_IPV4_LOADED : FW3_DEFAULT_IPV6_LOADED)
+
+static bool
+family_running(struct list_head *statefile, enum fw3_family family)
+{
+ struct fw3_statefile_entry *e;
+
+ if (statefile)
+ {
+ list_for_each_entry(e, statefile, list)
+ {
+ if (e->type != FW3_TYPE_DEFAULTS)
+ continue;
+
+ return hasbit(e->flags[0], family_flag(family));
+ }
+ }
+
+ return false;
+}
+
+static bool
+family_used(enum fw3_family family)
+{
+ return (use_family == FW3_FAMILY_ANY) || (use_family == family);
+}
+
+static bool
+family_loaded(struct fw3_state *state, enum fw3_family family)
+{
+ return hasbit(state->defaults.flags, family_flag(family));
+}
+
+static void
+family_set(struct fw3_state *state, enum fw3_family family, bool set)
+{
+ if (set)
+ setbit(state->defaults.flags, family_flag(family));
+ else
+ delbit(state->defaults.flags, family_flag(family));
+}
+
static int
-stop(struct fw3_state *state, bool complete)
+stop(struct fw3_state *state, bool complete, bool restart)
{
+ int rv = 1;
enum fw3_family family;
enum fw3_table table;
- const char *tables[] = {
- "filter",
- "nat",
- "mangle",
- "raw",
- };
+ struct list_head *statefile = fw3_read_statefile();
+
+ if (!complete && !statefile)
+ {
+ if (!restart)
+ warn("The firewall appears to be stopped. "
+ "Use the 'flush' command to forcefully purge all rules.");
+
+ return rv;
+ }
for (family = FW3_FAMILY_V4; family <= FW3_FAMILY_V6; family++)
{
- if (skip_family[family] || !restore_pipe(family, true))
+ if (!complete && !family_running(statefile, family))
continue;
- info("Removing IPv%d rules ...", family == FW3_FAMILY_V4 ? 4 : 6);
+ if (!family_used(family) || !restore_pipe(family, true))
+ continue;
+
+ info("Removing %s rules ...", families[family]);
for (table = FW3_TABLE_FILTER; table <= FW3_TABLE_RAW; table++)
{
complete ? "Flush" : "Clear", tables[table]);
fw3_pr("*%s\n", tables[table]);
- fw3_print_flush_rules(table, family, state, complete);
+
+ if (complete)
+ {
+ fw3_flush_all(table);
+ }
+ else
+ {
+ /* pass 1 */
+ fw3_flush_rules(table, family, false, statefile);
+ fw3_flush_zones(table, family, false, statefile);
+
+ /* pass 2 */
+ fw3_flush_rules(table, family, true, statefile);
+ fw3_flush_zones(table, family, true, statefile);
+ }
+
fw3_pr("COMMIT\n");
}
fw3_command_close();
+
+ if (!restart)
+ family_set(state, family, false);
+
+ rv = 0;
}
- if (complete && fw3_command_pipe(false, "ipset", "-exist", "-"))
+ if (!restart &&
+ !family_loaded(state, FW3_FAMILY_V4) &&
+ !family_loaded(state, FW3_FAMILY_V6) &&
+ fw3_command_pipe(false, "ipset", "-exist", "-"))
{
- fw3_destroy_ipsets(state);
+ fw3_destroy_ipsets(statefile);
fw3_command_close();
}
- return 0;
+ fw3_free_statefile(statefile);
+
+ if (!rv)
+ fw3_write_statefile(state);
+
+ return rv;
}
static int
-start(struct fw3_state *state)
+start(struct fw3_state *state, bool restart)
{
+ int rv = 1;
enum fw3_family family;
enum fw3_table table;
- const char *tables[] = {
- "filter",
- "nat",
- "mangle",
- "raw",
- };
+ struct list_head *statefile = fw3_read_statefile();
- if (!print_rules && fw3_command_pipe(false, "ipset", "-exist", "-"))
+ if (!print_rules && !restart &&
+ fw3_command_pipe(false, "ipset", "-exist", "-"))
{
fw3_create_ipsets(state);
fw3_command_close();
for (family = FW3_FAMILY_V4; family <= FW3_FAMILY_V6; family++)
{
- if (skip_family[family] || !restore_pipe(family, false))
+ if (!family_used(family))
+ continue;
+
+ if (!family_loaded(state, family) || !restore_pipe(family, false))
+ continue;
+
+ if (!restart && family_running(statefile, family))
+ {
+ warn("The %s firewall appears to be started already. "
+ "If it is indeed empty, remove the %s file and retry.",
+ families[family], FW3_STATEFILE);
+
continue;
+ }
- info("Constructing IPv%d rules ...", family == FW3_FAMILY_V4 ? 4 : 6);
+ info("Constructing %s rules ...", families[family]);
for (table = FW3_TABLE_FILTER; table <= FW3_TABLE_RAW; table++)
{
fw3_pr("*%s\n", tables[table]);
fw3_print_default_chains(table, family, state);
fw3_print_zone_chains(table, family, state);
- fw3_print_default_rules(table, family, state);
+ fw3_print_default_head_rules(table, family, state);
fw3_print_rules(table, family, state);
fw3_print_redirects(table, family, state);
fw3_print_forwards(table, family, state);
fw3_print_zone_rules(table, family, state);
+ fw3_print_default_tail_rules(table, family, state);
fw3_pr("COMMIT\n");
}
fw3_command_close();
+ family_set(state, family, true);
+
+ rv = 0;
}
- return 0;
+ fw3_free_statefile(statefile);
+
+ if (!rv)
+ fw3_write_statefile(state);
+
+ return rv;
}
static int
{
int ch, rv = 1;
struct fw3_state *state = NULL;
+ struct fw3_defaults *defs = NULL;
while ((ch = getopt(argc, argv, "46qh")) != -1)
{
switch (ch)
{
case '4':
- skip_family[FW3_FAMILY_V4] = false;
- skip_family[FW3_FAMILY_V6] = true;
+ use_family = FW3_FAMILY_V4;
break;
case '6':
- skip_family[FW3_FAMILY_V4] = true;
- skip_family[FW3_FAMILY_V6] = false;
+ use_family = FW3_FAMILY_V6;
break;
case 'q':
error("Failed to connect to ubus");
state = build_state();
+ defs = &state->defaults;
+
+ if (!fw3_lock())
+ goto out;
if (optind >= argc)
{
goto out;
}
+ if (use_family == FW3_FAMILY_V6 && defs->disable_ipv6)
+ warn("IPv6 rules globally disabled in configuration");
+
if (!strcmp(argv[optind], "print"))
{
+ freopen("/dev/null", "w", stderr);
+
state->disable_ipsets = true;
print_rules = true;
- if (!skip_family[FW3_FAMILY_V4] && !skip_family[FW3_FAMILY_V6])
- skip_family[FW3_FAMILY_V6] = true;
-
- rv = start(state);
+ rv = start(state, false);
}
else if (!strcmp(argv[optind], "start"))
{
- if (!fw3_check_statefile(false))
- goto out;
-
- rv = start(state);
- fw3_close_statefile();
+ rv = start(state, false);
}
else if (!strcmp(argv[optind], "stop"))
{
- if (!fw3_check_statefile(true))
- goto out;
-
- rv = stop(state, false);
- fw3_remove_statefile();
+ rv = stop(state, false, false);
}
else if (!strcmp(argv[optind], "flush"))
{
- rv = stop(state, true);
- fw3_remove_statefile();
+ rv = stop(state, true, false);
}
else if (!strcmp(argv[optind], "restart"))
{
- if (fw3_check_statefile(true))
- {
- stop(state, false);
- fw3_remove_statefile();
- }
-
- if (!fw3_check_statefile(false))
- goto out;
-
- rv = start(state);
- fw3_close_statefile();
+ rv = stop(state, false, true);
+ rv = start(state, !rv);
}
else if (!strcmp(argv[optind], "network") && (optind + 1) < argc)
{
if (state)
free_state(state);
+ fw3_unlock();
+
return rv;
}
projects / project / firewall3.git / blobdiff