+/*
+ * netifd - network interface daemon
+ * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
+#include <arpa/inet.h>
+#include <netinet/in.h>
+
#include "netifd.h"
+#include "system.h"
#include "interface.h"
+#include "interface-ip.h"
#include "proto.h"
+static struct avl_tree handlers;
+
+enum {
+ OPT_IPADDR,
+ OPT_IP6ADDR,
+ OPT_NETMASK,
+ OPT_BROADCAST,
+ OPT_GATEWAY,
+ OPT_IP6GW,
+ OPT_IP6PREFIX,
+ OPT_IP6ASSIGN,
+ __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_BROADCAST] = { .name = "broadcast", .type = BLOBMSG_TYPE_STRING },
+ [OPT_GATEWAY] = { .name = "gateway", .type = BLOBMSG_TYPE_STRING },
+ [OPT_IP6GW] = { .name = "ip6gw", .type = BLOBMSG_TYPE_STRING },
+ [OPT_IP6PREFIX] = { .name = "ip6prefix", .type = BLOBMSG_TYPE_ARRAY },
+ [OPT_IP6ASSIGN] = { .name = "ip6assign", .type = BLOBMSG_TYPE_INT32 },
+};
+
+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_IP6PREFIX] = { .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,
+};
+
+enum {
+ ADDR_IPADDR,
+ ADDR_MASK,
+ ADDR_BROADCAST,
+ ADDR_PTP,
+ ADDR_PREFERRED,
+ ADDR_VALID,
+ ADDR_OFFLINK,
+ __ADDR_MAX
+};
+
+static const struct blobmsg_policy proto_ip_addr[__ADDR_MAX] = {
+ [ADDR_IPADDR] = { .name = "ipaddr", .type = BLOBMSG_TYPE_STRING },
+ [ADDR_MASK] = { .name = "mask", .type = BLOBMSG_TYPE_STRING },
+ [ADDR_BROADCAST] = { .name = "broadcast", .type = BLOBMSG_TYPE_STRING },
+ [ADDR_PTP] = { .name = "ptp", .type = BLOBMSG_TYPE_STRING },
+ [ADDR_PREFERRED] = { .name = "preferred", .type = BLOBMSG_TYPE_INT32 },
+ [ADDR_VALID] = { .name = "valid", .type = BLOBMSG_TYPE_INT32 },
+ [ADDR_OFFLINK] = { .name = "offlink", .type = BLOBMSG_TYPE_BOOL },
+};
+
+static struct device_addr *
+alloc_device_addr(bool v6, bool ext)
+{
+ struct device_addr *addr;
+
+ addr = calloc(1, sizeof(*addr));
+ addr->flags = v6 ? DEVADDR_INET6 : DEVADDR_INET4;
+ if (ext)
+ addr->flags |= DEVADDR_EXTERNAL;
+
+ return addr;
+}
+
+static bool
+parse_addr(struct interface *iface, const char *str, bool v6, int mask,
+ bool ext, uint32_t broadcast)
+{
+ struct device_addr *addr;
+ int af = v6 ? AF_INET6 : AF_INET;
+
+ addr = alloc_device_addr(v6, ext);
+ if (!addr)
+ return false;
+
+ addr->mask = mask;
+ if (!parse_ip_and_netmask(af, str, &addr->addr, &addr->mask)) {
+ interface_add_error(iface, "proto", "INVALID_ADDRESS", &str, 1);
+ free(addr);
+ return false;
+ }
+
+ if (broadcast)
+ addr->broadcast = broadcast;
+
+ vlist_add(&iface->proto_ip.addr, &addr->node, &addr->flags);
+ return true;
+}
+
+static int
+parse_static_address_option(struct interface *iface, struct blob_attr *attr,
+ bool v6, int netmask, bool ext, uint32_t broadcast)
+{
+ struct blob_attr *cur;
+ int n_addr = 0;
+ int rem;
+
+ blobmsg_for_each_attr(cur, attr, rem) {
+ if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
+ return -1;
+
+ n_addr++;
+ if (!parse_addr(iface, blobmsg_data(cur), v6, netmask, ext,
+ broadcast))
+ return -1;
+ }
+
+ return n_addr;
+}
+
+static struct device_addr *
+parse_address_item(struct blob_attr *attr, bool v6, bool ext)
+{
+ struct device_addr *addr;
+ struct blob_attr *tb[__ADDR_MAX];
+ struct blob_attr *cur;
+
+ if (blobmsg_type(attr) != BLOBMSG_TYPE_TABLE)
+ return NULL;
+
+ addr = alloc_device_addr(v6, ext);
+ if (!addr)
+ return NULL;
+
+ blobmsg_parse(proto_ip_addr, __ADDR_MAX, tb, blobmsg_data(attr), blobmsg_data_len(attr));
+
+ addr->mask = v6 ? 128 : 32;
+ if ((cur = tb[ADDR_MASK])) {
+ unsigned int new_mask;
+
+ new_mask = parse_netmask_string(blobmsg_data(cur), v6);
+ if (new_mask > addr->mask)
+ goto error;
+
+ addr->mask = new_mask;
+ }
+
+ cur = tb[ADDR_IPADDR];
+ if (!cur)
+ goto error;
+
+ if (!inet_pton(v6 ? AF_INET6 : AF_INET, blobmsg_data(cur), &addr->addr))
+ goto error;
+
+ if ((cur = tb[ADDR_OFFLINK]) && blobmsg_get_bool(cur))
+ addr->flags |= DEVADDR_OFFLINK;
+
+ if (!v6) {
+ if ((cur = tb[ADDR_BROADCAST]) &&
+ !inet_pton(AF_INET, blobmsg_data(cur), &addr->broadcast))
+ goto error;
+ if ((cur = tb[ADDR_PTP]) &&
+ !inet_pton(AF_INET, blobmsg_data(cur), &addr->point_to_point))
+ goto error;
+ } else {
+ time_t now = system_get_rtime();
+ if ((cur = tb[ADDR_PREFERRED])) {
+ uint32_t preferred = blobmsg_get_u32(cur);
+ if (preferred < UINT32_MAX)
+ addr->preferred_until = now + preferred;
+ }
+
+ if ((cur = tb[ADDR_VALID])) {
+ uint32_t valid = blobmsg_get_u32(cur);
+ if (valid < UINT32_MAX)
+ addr->valid_until = now + valid;
+
+ }
+
+ if (addr->valid_until) {
+ if (!addr->preferred_until)
+ addr->preferred_until = addr->valid_until;
+ else if (addr->preferred_until > addr->valid_until)
+ goto error;
+ }
+ }
+
+ return addr;
+
+error:
+ free(addr);
+ return NULL;
+}
+
+static int
+parse_address_list(struct interface *iface, struct blob_attr *attr, bool v6,
+ bool ext)
+{
+ struct device_addr *addr;
+ struct blob_attr *cur;
+ int n_addr = 0;
+ int rem;
+
+ blobmsg_for_each_attr(cur, attr, rem) {
+ addr = parse_address_item(cur, v6, ext);
+ if (!addr)
+ return -1;
+
+ n_addr++;
+ vlist_add(&iface->proto_ip.addr, &addr->node, &addr->flags);
+ }
+
+ 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 = (v6 ? DEVADDR_INET6 : DEVADDR_INET4);
+ vlist_add(&iface->proto_ip.route, &route->node, &route->flags);
+
+ return true;
+}
+
+static bool
+parse_ip6assign_option(struct interface *iface, struct blob_attr *attr)
+{
+ uint8_t oldval = iface->proto_ip.assignment_length;
+ uint8_t newval = blobmsg_get_u32(attr);
+
+ struct device_prefix *prefix;
+ list_for_each_entry(prefix, &prefixes, head) {
+ if (oldval && oldval != newval)
+ interface_ip_set_prefix_assignment(prefix, iface, 0);
+
+ if (newval && newval <= 64)
+ interface_ip_set_prefix_assignment(prefix, iface, newval);
+ }
+
+ iface->proto_ip.assignment_length = newval;
+ return true;
+}
+
+static bool
+parse_prefix_option(struct interface *iface, const char *str, size_t len)
+{
+ char buf[128] = {0}, *saveptr;
+ if (len > sizeof(buf))
+ return false;
+
+ memcpy(buf, str, len);
+ char *addrstr = strtok_r(buf, "/", &saveptr);
+ if (!addrstr)
+ return false;
+
+ char *lengthstr = strtok_r(NULL, ",", &saveptr);
+ if (!lengthstr)
+ return false;
+
+ char *prefstr = strtok_r(NULL, ",", &saveptr);
+ char *validstr = (!prefstr) ? NULL : strtok_r(NULL, ",", &saveptr);
+
+ uint32_t pref = (!prefstr) ? 0 : strtoul(prefstr, NULL, 10);
+ uint32_t valid = (!validstr) ? 0 : strtoul(validstr, NULL, 10);
+
+ uint8_t length = strtoul(lengthstr, NULL, 10);
+ if (length < 1 || length > 64)
+ return false;
+
+ struct in6_addr addr;
+ if (inet_pton(AF_INET6, addrstr, &addr) < 1)
+ return false;
+
+ time_t now = system_get_rtime();
+ time_t preferred_until = 0;
+ if (prefstr && pref != 0xffffffffU)
+ preferred_until = pref + now;
+
+ time_t valid_until = 0;
+ if (validstr && valid != 0xffffffffU)
+ valid_until = valid + now;
+
+ interface_ip_add_device_prefix(iface, &addr, length,
+ valid_until, preferred_until);
+ return true;
+}
+
+static int
+parse_prefix_list(struct interface *iface, struct blob_attr *attr)
+{
+ struct blob_attr *cur;
+ int n_addr = 0;
+ int rem;
+
+ blobmsg_for_each_attr(cur, attr, rem) {
+ if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
+ return -1;
+
+ n_addr++;
+ if (!parse_prefix_option(iface, blobmsg_data(cur),
+ blobmsg_data_len(cur)))
+ return -1;
+ }
+
+ return n_addr;
+}
+
+int
+proto_apply_static_ip_settings(struct interface *iface, struct blob_attr *attr)
+{
+ struct blob_attr *tb[__OPT_MAX];
+ struct blob_attr *cur;
+ const char *error;
+ unsigned int netmask = 32;
+ int n_v4 = 0, n_v6 = 0;
+ struct in_addr bcast = {};
+
+ blobmsg_parse(proto_ip_attributes, __OPT_MAX, tb, blob_data(attr), blob_len(attr));
+
+ if ((cur = tb[OPT_NETMASK])) {
+ netmask = parse_netmask_string(blobmsg_data(cur), false);
+ if (netmask > 32) {
+ error = "INVALID_NETMASK";
+ goto error;
+ }
+ }
+
+ if ((cur = tb[OPT_BROADCAST])) {
+ if (!inet_pton(AF_INET, blobmsg_data(cur), &bcast)) {
+ error = "INVALID_BROADCAST";
+ goto error;
+ }
+ }
+
+ if ((cur = tb[OPT_IPADDR]))
+ n_v4 = parse_static_address_option(iface, cur, false,
+ netmask, false, bcast.s_addr);
+
+ if ((cur = tb[OPT_IP6ADDR]))
+ n_v6 = parse_static_address_option(iface, cur, true,
+ 128, false, 0);
+
+ if ((cur = tb[OPT_IP6PREFIX]))
+ if (parse_prefix_list(iface, cur) < 0)
+ goto out;
+
+ if (n_v4 < 0 || n_v6 < 0)
+ goto out;
+
+ if ((cur = tb[OPT_GATEWAY])) {
+ if (n_v4 && !parse_gateway_option(iface, cur, false))
+ goto out;
+ }
+
+ if ((cur = tb[OPT_IP6GW])) {
+ if (n_v6 && !parse_gateway_option(iface, cur, true))
+ goto out;
+ }
+
+ if ((cur = tb[OPT_IP6ASSIGN]))
+ if (!parse_ip6assign_option(iface, cur))
+ goto out;
+
+ return 0;
+
+error:
+ interface_add_error(iface, "proto", error, NULL, 0);
+out:
+ return -1;
+}
+
+int
+proto_apply_ip_settings(struct interface *iface, struct blob_attr *attr, bool ext)
+{
+ struct blob_attr *tb[__OPT_MAX];
+ struct blob_attr *cur;
+ int n_v4 = 0, n_v6 = 0;
+
+ blobmsg_parse(proto_ip_attributes, __OPT_MAX, tb, blob_data(attr), blob_len(attr));
+
+ if ((cur = tb[OPT_IPADDR]))
+ n_v4 = parse_address_list(iface, cur, false, ext);
+
+ if ((cur = tb[OPT_IP6ADDR]))
+ n_v6 = parse_address_list(iface, cur, true, ext);
+
+ if ((cur = tb[OPT_IP6PREFIX]))
+ if (parse_prefix_list(iface, cur) < 0)
+ goto out;
+
+ if (n_v4 < 0 || n_v6 < 0)
+ goto out;
+
+ if ((cur = tb[OPT_GATEWAY])) {
+ if (n_v4 && !parse_gateway_option(iface, cur, false))
+ goto out;
+ }
+
+ if ((cur = tb[OPT_IP6GW])) {
+ if (n_v6 && !parse_gateway_option(iface, cur, true))
+ goto out;
+ }
+
+ if ((cur = tb[OPT_IP6ASSIGN]))
+ if (!parse_ip6assign_option(iface, cur))
+ goto out;
+
+ return 0;
+
+out:
+ return -1;
+}
+
+void add_proto_handler(struct proto_handler *p)
+{
+ if (!handlers.comp)
+ avl_init(&handlers, avl_strcmp, false, NULL);
+
+ if (p->avl.key)
+ return;
+
+ p->avl.key = p->name;
+ avl_insert(&handlers, &p->avl);
+}
+
static void
default_proto_free(struct interface_proto_state *proto)
{
}
static int
-default_proto_handler(struct interface_proto_state *proto,
+invalid_proto_handler(struct interface_proto_state *proto,
+ enum interface_proto_cmd cmd, bool force)
+{
+ return -1;
+}
+
+static int
+no_proto_handler(struct interface_proto_state *proto,
+ enum interface_proto_cmd cmd, bool force)
+{
+ return 0;
+}
+
+static struct interface_proto_state *
+default_proto_attach(const struct proto_handler *h,
+ struct interface *iface, struct blob_attr *attr)
+{
+ struct interface_proto_state *proto;
+
+ proto = calloc(1, sizeof(*proto));
+ proto->free = default_proto_free;
+ proto->cb = no_proto_handler;
+
+ return proto;
+}
+
+static const struct proto_handler no_proto = {
+ .name = "none",
+ .flags = PROTO_FLAG_IMMEDIATE,
+ .attach = default_proto_attach,
+};
+
+static const struct proto_handler *
+get_proto_handler(const char *name)
+{
+ struct proto_handler *proto;
+
+ if (!strcmp(name, "none"))
+ return &no_proto;
+
+ if (!handlers.comp)
+ return NULL;
+
+ return avl_find_element(&handlers, name, proto, avl);
+}
+
+void
+proto_dump_handlers(struct blob_buf *b)
+{
+ struct proto_handler *p;
+ void *c;
+
+ avl_for_each_element(&handlers, p, avl) {
+ c = blobmsg_open_table(b, p->name);
+ blobmsg_add_u8(b, "no_device", !!(p->flags & PROTO_FLAG_NODEV));
+ blobmsg_close_table(b, c);
+ }
+}
+
+void
+proto_init_interface(struct interface *iface, struct blob_attr *attr)
+{
+ const struct proto_handler *proto = iface->proto_handler;
+ struct interface_proto_state *state = NULL;
+
+ if (!proto)
+ proto = &no_proto;
+
+ state = proto->attach(proto, iface, attr);
+ if (!state) {
+ state = no_proto.attach(&no_proto, iface, attr);
+ state->cb = invalid_proto_handler;
+ }
+
+ state->handler = proto;
+ interface_set_proto_state(iface, state);
+}
+
+void
+proto_attach_interface(struct interface *iface, const char *proto_name)
+{
+ const struct proto_handler *proto = &no_proto;
+
+ if (proto_name) {
+ proto = get_proto_handler(proto_name);
+ if (!proto) {
+ interface_add_error(iface, "proto", "INVALID_PROTO", NULL, 0);
+ proto = &no_proto;
+ }
+ }
+
+ iface->proto_handler = proto;
+}
+
+int
+interface_proto_event(struct interface_proto_state *proto,
enum interface_proto_cmd cmd, bool force)
{
- enum interface_event ev;
+ enum interface_proto_event ev;
+ int ret;
+
+ ret = proto->cb(proto, cmd, force);
+ if (ret || !(proto->handler->flags & PROTO_FLAG_IMMEDIATE))
+ goto out;
switch(cmd) {
case PROTO_CMD_SETUP:
- ev = IFEV_UP;
+ ev = IFPEV_UP;
break;
case PROTO_CMD_TEARDOWN:
- ev = IFEV_DOWN;
+ ev = IFPEV_DOWN;
break;
default:
return -EINVAL;
}
proto->proto_event(proto, ev);
- return 0;
-}
-struct interface_proto_state *get_default_proto(void)
-{
- struct interface_proto_state *proto;
-
- proto = calloc(1, sizeof(*proto));
- proto->handler = default_proto_handler;
- proto->free = default_proto_free;
- return proto;
+out:
+ return ret;
}
projects / project / netifd.git / blobdiff