diff options
Diffstat (limited to 'proto.c')
| -rw-r--r-- | proto.c | 136 |
1 files changed, 136 insertions, 0 deletions
@@ -12,6 +12,38 @@ static struct avl_tree handlers; +enum { + OPT_IPADDR, + OPT_IP6ADDR, + OPT_NETMASK, + OPT_GATEWAY, + OPT_IP6GW, + OPT_DNS, + __OPT_MAX, +}; + +static const struct blobmsg_policy proto_ip_attributes[__OPT_MAX] = { + [OPT_IPADDR] = { .name = "ipaddr", .type = BLOBMSG_TYPE_ARRAY }, + [OPT_IP6ADDR] = { .name = "ip6addr", .type = BLOBMSG_TYPE_ARRAY }, + [OPT_NETMASK] = { .name = "netmask", .type = BLOBMSG_TYPE_STRING }, + [OPT_GATEWAY] = { .name = "gateway", .type = BLOBMSG_TYPE_STRING }, + [OPT_IP6GW] = { .name = "ip6gw", .type = BLOBMSG_TYPE_STRING }, + [OPT_DNS] = { .name = "dns", .type = BLOBMSG_TYPE_ARRAY }, +}; + +static const union config_param_info proto_ip_attr_info[__OPT_MAX] = { + [OPT_IPADDR] = { .type = BLOBMSG_TYPE_STRING }, + [OPT_IP6ADDR] = { .type = BLOBMSG_TYPE_STRING }, + [OPT_DNS] = { .type = BLOBMSG_TYPE_STRING }, +}; + +const struct config_param_list proto_ip_attr = { + .n_params = __OPT_MAX, + .params = proto_ip_attributes, + .info = proto_ip_attr_info, +}; + + unsigned int parse_netmask_string(const char *str, bool v6) { @@ -88,6 +120,110 @@ proto_parse_ip_addr_string(const char *str, bool v6, int mask) return addr; } +static bool +parse_addr(struct interface *iface, const char *str, bool v6, int mask) +{ + struct device_addr *addr; + + addr = proto_parse_ip_addr_string(str, v6, mask); + if (!addr) { + interface_add_error(iface, "proto", "INVALID_ADDRESS", &str, 1); + return false; + } + vlist_add(&iface->proto_ip.addr, &addr->node); + return true; +} + +static int +parse_address_option(struct interface *iface, struct blob_attr *attr, bool v6, int netmask) +{ + struct blob_attr *cur; + int n_addr = 0; + int rem; + + blobmsg_for_each_attr(cur, attr, rem) { + n_addr++; + if (!parse_addr(iface, blobmsg_data(cur), v6, netmask)) + return -1; + } + + return n_addr; +} + + +static bool +parse_gateway_option(struct interface *iface, struct blob_attr *attr, bool v6) +{ + struct device_route *route; + const char *str = blobmsg_data(attr); + int af = v6 ? AF_INET6 : AF_INET; + + route = calloc(1, sizeof(*route)); + if (!inet_pton(af, str, &route->nexthop)) { + interface_add_error(iface, "proto", "INVALID_GATEWAY", &str, 1); + free(route); + return false; + } + + route->mask = 0; + route->flags = DEVADDR_DEVICE | (v6 ? DEVADDR_INET6 : DEVADDR_INET4); + vlist_add(&iface->proto_ip.route, &route->node); + + return true; +} + +int +proto_apply_ip_settings(struct interface *iface, struct blob_attr *attr) +{ + struct blob_attr *tb[__OPT_MAX]; + const char *error; + unsigned int netmask = 32; + int n_v4 = 0, n_v6 = 0; + + blobmsg_parse(proto_ip_attributes, __OPT_MAX, tb, blob_data(attr), blob_len(attr)); + + if (tb[OPT_NETMASK]) { + netmask = parse_netmask_string(blobmsg_data(tb[OPT_NETMASK]), false); + if (netmask > 32) { + error = "INVALID_NETMASK"; + goto error; + } + } + + if (tb[OPT_IPADDR]) + n_v4 = parse_address_option(iface, tb[OPT_IPADDR], false, netmask); + + if (tb[OPT_IP6ADDR]) + n_v6 = parse_address_option(iface, tb[OPT_IP6ADDR], true, netmask); + + if (!n_v4 && !n_v6) { + error = "NO_ADDRESS"; + goto error; + } + + if (n_v4 < 0 || n_v6 < 0) + goto out; + + if (n_v4 && tb[OPT_GATEWAY]) { + if (!parse_gateway_option(iface, tb[OPT_GATEWAY], false)) + goto out; + } + + if (n_v6 && tb[OPT_IP6GW]) { + if (!parse_gateway_option(iface, tb[OPT_IP6GW], true)) + goto out; + } + + if (tb[OPT_DNS]) + interface_add_dns_server_list(&iface->proto_ip, tb[OPT_DNS]); + + return 0; + +error: + interface_add_error(iface, "proto", error, NULL, 0); +out: + return -1; +} void add_proto_handler(struct proto_handler *p) { |