firewall3: fix left shift on 64 bit systems in fw3_bitlen2netmask
[project/firewall3.git] / rules.c
diff --git a/rules.c b/rules.c
index 53268e2..f45de6e 100644 (file)
--- a/rules.c
+++ b/rules.c
@@ -28,15 +28,18 @@ const struct fw3_option fw3_rule_opts[] = {
        FW3_OPT("src",                 device,    rule,     src),
        FW3_OPT("dest",                device,    rule,     dest),
 
-       FW3_OPT("ipset",               device,    rule,     ipset),
+       FW3_OPT("device",              string,    rule,     device),
+       FW3_OPT("direction",           direction, rule,     direction_out),
+
+       FW3_OPT("ipset",               setmatch,  rule,     ipset),
 
        FW3_LIST("proto",              protocol,  rule,     proto),
 
-       FW3_LIST("src_ip",             address,   rule,     ip_src),
+       FW3_LIST("src_ip",             network,   rule,     ip_src),
        FW3_LIST("src_mac",            mac,       rule,     mac_src),
        FW3_LIST("src_port",           port,      rule,     port_src),
 
-       FW3_LIST("dest_ip",            address,   rule,     ip_dest),
+       FW3_LIST("dest_ip",            network,   rule,     ip_dest),
        FW3_LIST("dest_port",          port,      rule,     port_dest),
 
        FW3_LIST("icmp_type",          icmptype,  rule,     icmp_type),
@@ -63,29 +66,18 @@ const struct fw3_option fw3_rule_opts[] = {
 };
 
 
-void
-fw3_load_rules(struct fw3_state *state, struct uci_package *p)
+static bool
+need_src_action_chain(struct fw3_rule *r)
 {
-       struct uci_section *s;
-       struct uci_element *e;
-       struct fw3_rule *rule;
-
-       INIT_LIST_HEAD(&state->rules);
-
-       uci_foreach_element(&p->sections, e)
-       {
-               s = uci_to_section(e);
-
-               if (strcmp(s->type, "rule"))
-                       continue;
-
-               rule = malloc(sizeof(*rule));
-
-               if (!rule)
-                       continue;
+       return (r->_src && r->_src->log && (r->target > FW3_FLAG_ACCEPT));
+}
 
-               memset(rule, 0, sizeof(*rule));
+static struct fw3_rule*
+alloc_rule(struct fw3_state *state)
+{
+       struct fw3_rule *rule = calloc(1, sizeof(*rule));
 
+       if (rule) {
                INIT_LIST_HEAD(&rule->proto);
 
                INIT_LIST_HEAD(&rule->ip_src);
@@ -97,10 +89,65 @@ fw3_load_rules(struct fw3_state *state, struct uci_package *p)
 
                INIT_LIST_HEAD(&rule->icmp_type);
 
+               list_add_tail(&rule->list, &state->rules);
                rule->enabled = true;
+       }
+
+       return rule;
+}
+
+void
+fw3_load_rules(struct fw3_state *state, struct uci_package *p,
+               struct blob_attr *a)
+{
+       struct uci_section *s;
+       struct uci_element *e;
+       struct fw3_rule *rule, *n;
+       struct blob_attr *entry, *opt;
+       unsigned rem, orem;
 
-               fw3_parse_options(rule, fw3_rule_opts, s);
+       INIT_LIST_HEAD(&state->rules);
 
+       blob_for_each_attr(entry, a, rem) {
+               const char *type = NULL;
+               blobmsg_for_each_attr(opt, entry, orem)
+                       if (!strcmp(blobmsg_name(opt), "type"))
+                               type = blobmsg_get_string(opt);
+
+               if (!type || strcmp(type, "rule"))
+                       continue;
+
+               if (!(rule = alloc_rule(state)))
+                       continue;
+
+               if (!fw3_parse_blob_options(rule, fw3_rule_opts, entry))
+               {
+                       fprintf(stderr, "ubus section skipped due to invalid options\n");
+                       fw3_free_rule(rule);
+                       continue;
+               }
+       }
+
+       uci_foreach_element(&p->sections, e)
+       {
+               s = uci_to_section(e);
+
+               if (strcmp(s->type, "rule"))
+                       continue;
+
+               if (!(rule = alloc_rule(state)))
+                       continue;
+
+               if (!fw3_parse_options(rule, fw3_rule_opts, s))
+               {
+                       warn_elem(e, "skipped due to invalid options");
+                       fw3_free_rule(rule);
+                       continue;
+               }
+       }
+
+       list_for_each_entry_safe(rule, n, &state->rules, list)
+       {
                if (!rule->enabled)
                {
                        fw3_free_rule(rule);
@@ -133,8 +180,8 @@ fw3_load_rules(struct fw3_state *state, struct uci_package *p)
                        fw3_free_rule(rule);
                        continue;
                }
-               else if (rule->ipset.set && !rule->ipset.any &&
-                        !(rule->_ipset = fw3_lookup_ipset(state, rule->ipset.name)))
+               else if (rule->ipset.set &&
+                        !(rule->ipset.ptr = fw3_lookup_ipset(state, rule->ipset.name)))
                {
                        warn_elem(e, "refers to unknown ipset '%s'", rule->ipset.name);
                        fw3_free_rule(rule);
@@ -200,9 +247,11 @@ fw3_load_rules(struct fw3_state *state, struct uci_package *p)
                        setbit(rule->_dest->flags[0], rule->target);
                        setbit(rule->_dest->flags[1], rule->target);
                }
-
-               list_add_tail(&rule->list, &state->rules);
-               continue;
+               else if (need_src_action_chain(rule))
+               {
+                       setbit(rule->_src->flags[0], fw3_to_src_target(rule->target));
+                       setbit(rule->_src->flags[1], fw3_to_src_target(rule->target));
+               }
        }
 }
 
@@ -245,7 +294,13 @@ append_chain(struct fw3_ipt_rule *r, struct fw3_rule *rule)
                }
 
                if (rule->dest.set && !rule->src.set)
-                       snprintf(chain, sizeof(chain), "zone_%s_output", rule->dest.name);
+               {
+                       if (rule->dest.any)
+                               snprintf(chain, sizeof(chain), "delegate_output");
+                       else
+                               snprintf(chain, sizeof(chain), "zone_%s_output",
+                                        rule->dest.name);
+               }
        }
 
        fw3_ipt_rule_append(r, chain);
@@ -268,9 +323,13 @@ static void set_target(struct fw3_ipt_rule *r, struct fw3_rule *rule)
                fw3_ipt_rule_addarg(r, false, name, buf);
                return;
 
+       case FW3_FLAG_NOTRACK:
+               fw3_ipt_rule_target(r, "CT");
+               fw3_ipt_rule_addarg(r, false, "--notrack", NULL);
+               return;
+
        case FW3_FLAG_ACCEPT:
        case FW3_FLAG_DROP:
-       case FW3_FLAG_NOTRACK:
                name = fw3_flag_names[rule->target];
                break;
 
@@ -281,15 +340,26 @@ static void set_target(struct fw3_ipt_rule *r, struct fw3_rule *rule)
 
        if (rule->dest.set && !rule->dest.any)
                fw3_ipt_rule_target(r, "zone_%s_dest_%s", rule->dest.name, name);
-       else if (rule->target == FW3_FLAG_REJECT)
+       else if (need_src_action_chain(rule))
+               fw3_ipt_rule_target(r, "zone_%s_src_%s", rule->src.name, name);
+       else if (strcmp(name, "REJECT"))
+               fw3_ipt_rule_target(r, name);
+       else
                fw3_ipt_rule_target(r, "reject");
+}
+
+static void
+set_comment(struct fw3_ipt_rule *r, const char *name, int num)
+{
+       if (name)
+               fw3_ipt_rule_comment(r, name);
        else
-               fw3_ipt_rule_target(r, name);
+               fw3_ipt_rule_comment(r, "@rule[%u]", num);
 }
 
 static void
 print_rule(struct fw3_ipt_handle *handle, struct fw3_state *state,
-           struct fw3_rule *rule, struct fw3_protocol *proto,
+           struct fw3_rule *rule, int num, struct fw3_protocol *proto,
            struct fw3_address *sip, struct fw3_address *dip,
            struct fw3_port *sport, struct fw3_port *dport,
            struct fw3_mac *mac, struct fw3_icmptype *icmptype)
@@ -299,7 +369,9 @@ print_rule(struct fw3_ipt_handle *handle, struct fw3_state *state,
        if (!fw3_is_family(sip, handle->family) ||
            !fw3_is_family(dip, handle->family))
        {
-               info("     ! Skipping due to different family of ip address");
+               if ((sip && !sip->resolved) || (dip && !dip->resolved))
+                       info("     ! Skipping due to different family of ip address");
+
                return;
        }
 
@@ -311,15 +383,16 @@ print_rule(struct fw3_ipt_handle *handle, struct fw3_state *state,
 
        r = fw3_ipt_rule_create(handle, proto, NULL, NULL, sip, dip);
        fw3_ipt_rule_sport_dport(r, sport, dport);
+       fw3_ipt_rule_device(r, rule->device, rule->direction_out);
        fw3_ipt_rule_icmptype(r, icmptype);
        fw3_ipt_rule_mac(r, mac);
-       fw3_ipt_rule_ipset(r, rule->_ipset, rule->ipset.invert);
+       fw3_ipt_rule_ipset(r, &rule->ipset);
        fw3_ipt_rule_limit(r, &rule->limit);
        fw3_ipt_rule_time(r, &rule->time);
        fw3_ipt_rule_mark(r, &rule->mark);
        set_target(r, rule);
        fw3_ipt_rule_extra(r, rule->extra);
-       fw3_ipt_rule_comment(r, rule->name);
+       set_comment(r, rule->name, num);
        append_chain(r, rule);
 }
 
@@ -362,23 +435,23 @@ expand_rule(struct fw3_ipt_handle *handle, struct fw3_state *state,
                return;
        }
 
-       if (rule->_ipset)
+       if (rule->ipset.ptr)
        {
-               if (!fw3_is_family(rule->_ipset, handle->family))
+               if (!fw3_is_family(rule->ipset.ptr, handle->family))
                {
                        info("     ! Skipping due to different family in ipset");
                        return;
                }
 
-               if (!fw3_check_ipset(rule->_ipset))
+               if (!fw3_check_ipset(rule->ipset.ptr))
                {
                        info("     ! Skipping due to missing ipset '%s'",
-                            rule->_ipset->external
-                                       ? rule->_ipset->external : rule->_ipset->name);
+                            rule->ipset.ptr->external
+                                       ? rule->ipset.ptr->external : rule->ipset.ptr->name);
                        return;
                }
 
-               set(rule->_ipset->flags, handle->family, handle->family);
+               set(rule->ipset.ptr->flags, handle->family, handle->family);
        }
 
        list_for_each_entry(proto, &rule->proto, list)
@@ -403,7 +476,7 @@ expand_rule(struct fw3_ipt_handle *handle, struct fw3_state *state,
                fw3_foreach(dport, dports)
                fw3_foreach(mac, &rule->mac_src)
                fw3_foreach(icmptype, icmptypes)
-                       print_rule(handle, state, rule, proto, sip, dip,
+                       print_rule(handle, state, rule, num, proto, sip, dip,
                                   sport, dport, mac, icmptype);
        }
 }