ubus: fix invalid ipv6-prefix json

[project/odhcpd.git] / src / config.c

diff --git a/src/config.c b/src/config.c
index 7e23eb2..c3e2437 100644 (file)
--- a/src/config.c
+++ b/src/config.c
@@ -62,6 +62,7 @@ enum {
        IFACE_ATTR_PD_CER,
        IFACE_ATTR_NDPROXY_ROUTING,
        IFACE_ATTR_NDPROXY_SLAVE,
+       IFACE_ATTR_PREFIX_FILTER,
        IFACE_ATTR_MAX
 };
 
@@ -104,6 +105,7 @@ static const struct blobmsg_policy iface_attrs[IFACE_ATTR_MAX] = {
        [IFACE_ATTR_RA_MTU] = { .name = "ra_mtu", .type = BLOBMSG_TYPE_INT32 },
        [IFACE_ATTR_NDPROXY_ROUTING] = { .name = "ndproxy_routing", .type = BLOBMSG_TYPE_BOOL },
        [IFACE_ATTR_NDPROXY_SLAVE] = { .name = "ndproxy_slave", .type = BLOBMSG_TYPE_BOOL },
+       [IFACE_ATTR_PREFIX_FILTER] = { .name = "prefix_filter", .type = BLOBMSG_TYPE_STRING },
 };
 
 static const struct uci_blob_param_info iface_attr_info[IFACE_ATTR_MAX] = {
@@ -184,7 +186,7 @@ static int mkdir_p(char *dir, mode_t mask)
                return 0;
 
        if (ret)
-               syslog(LOG_ERR, "mkdir(%s, %d) failed: %s\n", dir, mask, strerror(errno));
+               syslog(LOG_ERR, "mkdir(%s, %d) failed: %m\n", dir, mask);
 
        return ret;
 }
@@ -239,7 +241,9 @@ static void close_interface(struct interface *iface)
        router_setup_interface(iface, false);
        dhcpv6_setup_interface(iface, false);
        ndp_setup_interface(iface, false);
+#ifdef DHCPV4_SUPPORT
        dhcpv4_setup_interface(iface, false);
+#endif
 
        clean_interface(iface);
        free(iface->addr4);
@@ -718,6 +722,23 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
        if ((c = tb[IFACE_ATTR_NDPROXY_SLAVE]))
                iface->external = blobmsg_get_bool(c);
 
+       if ((c = tb[IFACE_ATTR_PREFIX_FILTER])) {
+               const char *str = blobmsg_get_string(c);
+               char *astr = malloc(strlen(str) + 1);
+               char *delim;
+               int l;
+               if (!astr || !strcpy(astr, str) ||
+                               (delim = strchr(astr, '/')) == NULL || (*(delim++) = 0) ||
+                               sscanf(delim, "%i", &l) == 0 || l > 128 ||
+                               inet_pton(AF_INET6, astr, &iface->pio_filter_addr) == 0) {
+                       iface->pio_filter_length = 0;
+               } else {
+                       iface->pio_filter_length = l;
+               }
+               if (astr)
+                       free(astr);
+       }
+
        return 0;
 
 err:
@@ -846,7 +867,9 @@ void odhcpd_reload(void)
                        router_setup_interface(i, !i->ignore || i->ra != MODE_DISABLED);
                        dhcpv6_setup_interface(i, !i->ignore || i->dhcpv6 != MODE_DISABLED);
                        ndp_setup_interface(i, !i->ignore || i->ndp != MODE_DISABLED);
+#ifdef DHCPV4_SUPPORT
                        dhcpv4_setup_interface(i, !i->ignore || i->dhcpv4 != MODE_DISABLED);
+#endif
                } else
                        close_interface(i);
        }