#include "utils.h"
#include "options.h"
+#include "zones.h"
+#include "ipsets.h"
+
+
static int lock_fd = -1;
static pid_t pipe_pid = -1;
static FILE *pipe_fd = NULL;
+bool fw3_pr_debug = false;
+
+
static void
warn_elem_section_name(struct uci_section *s, bool find_name)
{
fprintf(stderr, "\n");
}
+void *
+fw3_alloc(size_t size)
+{
+ void *mem;
+
+ mem = calloc(1, size);
+
+ if (!mem)
+ error("Out of memory while allocating %d bytes", size);
+
+ return mem;
+}
+
+char *
+fw3_strdup(const char *s)
+{
+ char *ns;
+
+ ns = strdup(s);
+
+ if (!ns)
+ error("Out of memory while duplicating string '%s'", s);
+
+ return ns;
+}
+
const char *
fw3_find_command(const char *cmd)
{
signal(SIGPIPE, SIG_IGN);
pipe_pid = pid;
close(pfds[0]);
+ fcntl(pfds[1], F_SETFD, fcntl(pfds[1], F_GETFD) | FD_CLOEXEC);
}
pipe_fd = fdopen(pfds[1], "w");
void
fw3_pr(const char *fmt, ...)
{
- va_list args;
- va_start(args, fmt);
- vfprintf(pipe_fd, fmt, args);
- va_end(args);
+ va_list args;
+
+ if (fw3_pr_debug && pipe_fd != stdout)
+ {
+ va_start(args, fmt);
+ vfprintf(stderr, fmt, args);
+ va_end(args);
+ }
+
+ va_start(args, fmt);
+ vfprintf(pipe_fd, fmt, args);
+ va_end(args);
}
void
}
-bool
-fw3_has_state(void)
+static void
+write_defaults_uci(struct uci_context *ctx, struct fw3_defaults *d,
+ struct uci_package *dest)
{
- struct stat s;
- return !stat(FW3_STATEFILE, &s);
+ char buf[sizeof("0xffffffff\0")];
+ struct uci_ptr ptr = { .p = dest };
+
+ uci_add_section(ctx, dest, "defaults", &ptr.s);
+
+ ptr.o = NULL;
+ ptr.option = "input";
+ ptr.value = fw3_flag_names[d->policy_input];
+ uci_set(ctx, &ptr);
+
+ ptr.o = NULL;
+ ptr.option = "output";
+ ptr.value = fw3_flag_names[d->policy_output];
+ uci_set(ctx, &ptr);
+
+ ptr.o = NULL;
+ ptr.option = "forward";
+ ptr.value = fw3_flag_names[d->policy_forward];
+ uci_set(ctx, &ptr);
+
+ sprintf(buf, "0x%x", d->flags[0]);
+ ptr.o = NULL;
+ ptr.option = "__flags_v4";
+ ptr.value = buf;
+ uci_set(ctx, &ptr);
+
+ sprintf(buf, "0x%x", d->flags[1]);
+ ptr.o = NULL;
+ ptr.option = "__flags_v6";
+ ptr.value = buf;
+ uci_set(ctx, &ptr);
}
-struct list_head *
-fw3_read_state(void)
+static void
+write_zone_uci(struct uci_context *ctx, struct fw3_zone *z,
+ struct uci_package *dest)
{
- FILE *sf;
+ struct fw3_device *dev;
+ struct fw3_address *sub;
+ enum fw3_family fam = FW3_FAMILY_ANY;
- int n;
- char line[128];
- const char *p;
+ char *p, buf[34];
- struct list_head *state;
- struct fw3_statefile_entry *entry;
+ struct uci_ptr ptr = { .p = dest };
- state = malloc(sizeof(*state));
+ if (!z->enabled)
+ return;
- if (!state)
- return NULL;
+ if (fw3_no_table(z->flags[0]) && !fw3_no_table(z->flags[1]))
+ fam = FW3_FAMILY_V6;
+ else if (!fw3_no_table(z->flags[0]) && fw3_no_table(z->flags[1]))
+ fam = FW3_FAMILY_V4;
+ else if (fw3_no_table(z->flags[0]) && fw3_no_table(z->flags[1]))
+ return;
- INIT_LIST_HEAD(state);
+ uci_add_section(ctx, dest, "zone", &ptr.s);
+
+ ptr.o = NULL;
+ ptr.option = "name";
+ ptr.value = z->name;
+ uci_set(ctx, &ptr);
+
+ ptr.o = NULL;
+ ptr.option = "input";
+ ptr.value = fw3_flag_names[z->policy_input];
+ uci_set(ctx, &ptr);
+
+ ptr.o = NULL;
+ ptr.option = "output";
+ ptr.value = fw3_flag_names[z->policy_output];
+ uci_set(ctx, &ptr);
+
+ ptr.o = NULL;
+ ptr.option = "forward";
+ ptr.value = fw3_flag_names[z->policy_forward];
+ uci_set(ctx, &ptr);
+
+ ptr.o = NULL;
+ ptr.option = "masq";
+ ptr.value = z->masq ? "1" : "0";
+ uci_set(ctx, &ptr);
+
+ ptr.o = NULL;
+ ptr.option = "conntrack";
+ ptr.value = z->conntrack ? "1" : "0";
+ uci_set(ctx, &ptr);
+
+ ptr.o = NULL;
+ ptr.option = "mtu_fix";
+ ptr.value = z->mtu_fix ? "1" : "0";
+ uci_set(ctx, &ptr);
+
+ ptr.o = NULL;
+ ptr.option = "custom_chains";
+ ptr.value = z->custom_chains ? "1" : "0";
+ uci_set(ctx, &ptr);
+
+ if (fam != FW3_FAMILY_ANY)
+ {
+ ptr.o = NULL;
+ ptr.option = "family";
+ ptr.value = fw3_flag_names[fam];
+ uci_set(ctx, &ptr);
+ }
- sf = fopen(FW3_STATEFILE, "r");
+ ptr.o = NULL;
+ ptr.option = "device";
- if (!sf)
+ fw3_foreach(dev, &z->devices)
{
- warn("Cannot open state %s: %s", FW3_STATEFILE, strerror(errno));
- free(state);
+ if (!dev)
+ continue;
- return NULL;
+ p = buf;
+
+ if (dev->invert)
+ p += sprintf(p, "!");
+
+ if (*dev->network)
+ p += sprintf(p, "%s@%s", dev->name, dev->network);
+ else
+ p += sprintf(p, "%s", dev->name);
+
+ ptr.value = buf;
+ uci_add_list(ctx, &ptr);
}
- while (fgets(line, sizeof(line), sf))
- {
- entry = malloc(sizeof(*entry));
+ ptr.o = NULL;
+ ptr.option = "subnet";
- if (!entry)
+ fw3_foreach(sub, &z->subnets)
+ {
+ if (!sub)
continue;
- memset(entry, 0, sizeof(*entry));
+ ptr.value = fw3_address_to_string(sub, true);
+ uci_add_list(ctx, &ptr);
+ }
- p = strtok(line, " \t\n");
+ sprintf(buf, "0x%x", z->flags[0]);
+ ptr.o = NULL;
+ ptr.option = "__flags_v4";
+ ptr.value = buf;
+ uci_set(ctx, &ptr);
+
+ sprintf(buf, "0x%x", z->flags[1]);
+ ptr.o = NULL;
+ ptr.option = "__flags_v6";
+ ptr.value = buf;
+ uci_set(ctx, &ptr);
+}
- if (!p)
- continue;
+static void
+write_ipset_uci(struct uci_context *ctx, struct fw3_ipset *s,
+ struct uci_package *dest)
+{
+ struct fw3_ipset_datatype *type;
- entry->type = strtoul(p, NULL, 10);
+ char buf[sizeof("65535-65535\0")];
- p = strtok(NULL, " \t\n");
+ struct uci_ptr ptr = { .p = dest };
- if (!p)
- continue;
+ if (!s->enabled || s->external)
+ return;
- entry->name = strdup(p);
+ uci_add_section(ctx, dest, "ipset", &ptr.s);
- for (n = 0, p = strtok(NULL, " \t\n");
- n < ARRAY_SIZE(entry->flags) && p != NULL;
- n++, p = strtok(NULL, " \t\n"))
- {
- entry->flags[n] = strtoul(p, NULL, 10);
- }
+ ptr.o = NULL;
+ ptr.option = "name";
+ ptr.value = s->name;
+ uci_set(ctx, &ptr);
- list_add_tail(&entry->list, state);
- }
+ ptr.o = NULL;
+ ptr.option = "storage";
+ ptr.value = fw3_ipset_method_names[s->method];
+ uci_set(ctx, &ptr);
- fclose(sf);
+ list_for_each_entry(type, &s->datatypes, list)
+ {
+ sprintf(buf, "%s_%s", type->dest ? "dst" : "src",
+ fw3_ipset_type_names[type->type]);
- return state;
-}
+ ptr.o = NULL;
+ ptr.option = "match";
+ ptr.value = buf;
+ uci_add_list(ctx, &ptr);
+ }
-void
-fw3_free_state(struct list_head *statefile)
-{
- fw3_free_list(statefile);
- free(statefile);
+ if (s->iprange.set)
+ {
+ ptr.o = NULL;
+ ptr.option = "iprange";
+ ptr.value = fw3_address_to_string(&s->iprange, false);
+ uci_set(ctx, &ptr);
+ }
+
+ if (s->portrange.set)
+ {
+ sprintf(buf, "%u-%u", s->portrange.port_min, s->portrange.port_max);
+ ptr.o = NULL;
+ ptr.option = "portrange";
+ ptr.value = buf;
+ uci_set(ctx, &ptr);
+ }
}
void
-fw3_write_state(void *state)
+fw3_write_statefile(void *state)
{
FILE *sf;
struct fw3_state *s = state;
- struct fw3_defaults *d = &s->defaults;
struct fw3_zone *z;
struct fw3_ipset *i;
- sf = fopen(FW3_STATEFILE, "w");
+ struct uci_package *p;
- if (!sf)
+ if (fw3_no_family(s->defaults.flags[0]) &&
+ fw3_no_family(s->defaults.flags[1]))
{
- warn("Cannot create state %s: %s", FW3_STATEFILE, strerror(errno));
- return;
+ unlink(FW3_STATEFILE);
}
+ else
+ {
+ sf = fopen(FW3_STATEFILE, "w+");
+
+ if (!sf)
+ {
+ warn("Cannot create state %s: %s", FW3_STATEFILE, strerror(errno));
+ return;
+ }
- fprintf(sf, "%u - %u\n", FW3_TYPE_DEFAULTS, d->has_flag);
+ if ((p = uci_lookup_package(s->uci, "fw3_state")) != NULL)
+ uci_unload(s->uci, p);
- list_for_each_entry(z, &s->zones, list)
- {
- fprintf(sf, "%u %s %u %u\n", FW3_TYPE_ZONE,
- z->name, z->has_src_target, z->has_dest_target);
+ uci_import(s->uci, sf, "fw3_state", NULL, true);
+
+ if ((p = uci_lookup_package(s->uci, "fw3_state")) != NULL)
+ {
+ write_defaults_uci(s->uci, &s->defaults, p);
+
+ list_for_each_entry(z, &s->zones, list)
+ write_zone_uci(s->uci, z, p);
+
+ list_for_each_entry(i, &s->ipsets, list)
+ write_ipset_uci(s->uci, i, p);
+
+ uci_export(s->uci, sf, p, true);
+ uci_unload(s->uci, p);
+ }
+
+ fsync(fileno(sf));
+ fclose(sf);
}
+}
+
- list_for_each_entry(i, &s->ipsets, list)
+void
+fw3_free_object(void *obj, const void *opts)
+{
+ const struct fw3_option *ol;
+ struct list_head *list, *cur, *tmp;
+
+ for (ol = opts; ol->name; ol++)
{
- if (i->external && *i->external)
+ if (!ol->elem_size)
continue;
- fprintf(sf, "%u %s\n", FW3_TYPE_IPSET, i->name);
+ list = (struct list_head *)((char *)obj + ol->offset);
+ list_for_each_safe(cur, tmp, list)
+ {
+ list_del(cur);
+ free(cur);
+ }
}
- fclose(sf);
+ free(obj);
}
-void
-fw3_remove_state(void)
+
+bool
+fw3_hotplug(bool add, void *zone, void *device)
{
- if (unlink(FW3_STATEFILE))
- warn("Unable to remove state %s: %s", FW3_STATEFILE, strerror(errno));
+ struct fw3_zone *z = zone;
+ struct fw3_device *d = device;
+
+ if (!*d->network)
+ return false;
+
+ switch (fork())
+ {
+ case -1:
+ warn("Unable to fork(): %s\n", strerror(errno));
+ return false;
+
+ case 0:
+ break;
+
+ default:
+ return true;
+ }
+
+ close(0);
+ close(1);
+ close(2);
+ chdir("/");
+
+ clearenv();
+ setenv("ACTION", add ? "add" : "remove", 1);
+ setenv("ZONE", z->name, 1);
+ setenv("INTERFACE", d->network, 1);
+ setenv("DEVICE", d->name, 1);
+
+ execl(FW3_HOTPLUG, FW3_HOTPLUG, "firewall", NULL);
+
+ /* unreached */
+ return false;
}
projects / project / firewall3.git / blobdiff