X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fnetifd.git;a=blobdiff_plain;f=interface-ip.c;h=93e8723be216b9408144970885e7b59f981f2b93;hp=6decaea7b16861c0adc00cf4316f8f70f8242881;hb=f5ca090c260a74fd3576f79ffb8799e8c20e3878;hpb=818abd9f2f42c36a0f91ff6d29a9a635398216e0 diff --git a/interface-ip.c b/interface-ip.c index 6decaea..93e8723 100644 --- a/interface-ip.c +++ b/interface-ip.c @@ -1,6 +1,9 @@ #include #include #include +#include + +#include #include "netifd.h" #include "device.h" @@ -10,60 +13,392 @@ #include "ubus.h" #include "system.h" -int interface_add_address(struct interface *iface, struct device_addr *addr) +enum { + ROUTE_INTERFACE, + ROUTE_TARGET, + ROUTE_MASK, + ROUTE_GATEWAY, + ROUTE_METRIC, + ROUTE_MTU, + __ROUTE_MAX +}; + +static const struct blobmsg_policy route_attr[__ROUTE_MAX] = { + [ROUTE_INTERFACE] = { .name = "interface", .type = BLOBMSG_TYPE_STRING }, + [ROUTE_TARGET] = { .name = "target", .type = BLOBMSG_TYPE_STRING }, + [ROUTE_MASK] = { .name = "netmask", .type = BLOBMSG_TYPE_STRING }, + [ROUTE_GATEWAY] = { .name = "gateway", .type = BLOBMSG_TYPE_STRING }, + [ROUTE_METRIC] = { .name = "metric", .type = BLOBMSG_TYPE_INT32 }, + [ROUTE_MTU] = { .name = "mtu", .type = BLOBMSG_TYPE_INT32 }, +}; + +const struct config_param_list route_attr_list = { + .n_params = __ROUTE_MAX, + .params = route_attr, +}; + +void +interface_ip_add_route(struct interface *iface, struct blob_attr *attr, bool v6) { - int family; + struct interface_ip_settings *ip; + struct blob_attr *tb[__ROUTE_MAX], *cur; + struct device_route *route; + int af = v6 ? AF_INET6 : AF_INET; + + blobmsg_parse(route_attr, __ROUTE_MAX, tb, blobmsg_data(attr), blobmsg_data_len(attr)); + + if (!iface) { + if ((cur = tb[ROUTE_INTERFACE]) == NULL) + return; + + iface = vlist_find(&interfaces, blobmsg_data(cur), iface, node); + if (!iface) + return; + + ip = &iface->config_ip; + } else { + ip = &iface->proto_ip; + } + + route = calloc(1, sizeof(*route)); + if (!route) + return; + + route->mask = v6 ? 128 : 32; + if ((cur = tb[ROUTE_MASK]) != NULL) { + route->mask = parse_netmask_string(blobmsg_data(cur), v6); + if (route->mask > (v6 ? 128 : 32)) + goto error; + } + + if ((cur = tb[ROUTE_TARGET]) != NULL) { + if (!inet_pton(af, blobmsg_data(cur), &route->addr)) { + DPRINTF("Failed to parse route target: %s\n", (char *) blobmsg_data(cur)); + goto error; + } + } - if (addr->flags & DEVADDR_INET6) - family = AF_INET6; + if ((cur = tb[ROUTE_GATEWAY]) != NULL) { + if (!inet_pton(af, blobmsg_data(cur), &route->nexthop)) { + DPRINTF("Failed to parse route gateway: %s\n", (char *) blobmsg_data(cur)); + goto error; + } + } else { + route->flags |= DEVADDR_DEVICE; + } + + if ((cur = tb[ROUTE_METRIC]) != NULL) + route->metric = blobmsg_get_u32(cur); else - family = AF_INET; + route->metric = -1; + + if ((cur = tb[ROUTE_MTU]) != NULL) + route->mtu = blobmsg_get_u32(cur); + + vlist_add(&ip->route, &route->node); + return; - list_add_tail(&addr->list, &iface->address); - return system_add_address(iface->l3_iface->dev, addr); +error: + free(route); } -void interface_del_address(struct interface *iface, struct device_addr *addr) +static int +addr_cmp(const void *k1, const void *k2, void *ptr) { - int family; + return memcmp(k1, k2, sizeof(struct device_addr) - + offsetof(struct device_addr, mask)); +} - if (addr->flags & DEVADDR_INET6) - family = AF_INET6; - else - family = AF_INET; +static int +route_cmp(const void *k1, const void *k2, void *ptr) +{ + return memcmp(k1, k2, sizeof(struct device_route) - + offsetof(struct device_route, mask)); +} + +static void +interface_update_proto_addr(struct vlist_tree *tree, + struct vlist_node *node_new, + struct vlist_node *node_old) +{ + struct interface_ip_settings *ip; + struct interface *iface; + struct device *dev; + struct device_addr *addr; + bool keep = false; - list_del(&addr->list); - system_del_address(iface->l3_iface->dev, addr); + ip = container_of(tree, struct interface_ip_settings, addr); + iface = ip->iface; + dev = iface->l3_dev->dev; + + if (node_old && node_new) + keep = true; + + if (node_old) { + addr = container_of(node_old, struct device_addr, node); + if (!(addr->flags & DEVADDR_EXTERNAL) && addr->enabled && !keep) + system_del_address(dev, addr); + free(addr); + } + + if (node_new) { + addr = container_of(node_new, struct device_addr, node); + if (!(addr->flags & DEVADDR_EXTERNAL) && !keep) + system_add_address(dev, addr); + addr->enabled = true; + } +} + +static bool +enable_route(struct interface_ip_settings *ip, struct device_route *route) +{ + if (ip->no_defaultroute && !route->mask) + return false; + + return true; +} + +static void +interface_update_proto_route(struct vlist_tree *tree, + struct vlist_node *node_new, + struct vlist_node *node_old) +{ + struct interface_ip_settings *ip; + struct interface *iface; + struct device *dev; + struct device_route *route_old, *route_new; + bool keep = false; + + ip = container_of(tree, struct interface_ip_settings, route); + iface = ip->iface; + dev = iface->l3_dev->dev; + + route_old = container_of(node_old, struct device_route, node); + route_new = container_of(node_new, struct device_route, node); + + if (node_old && node_new) + keep = !memcmp(&route_old->nexthop, &route_new->nexthop, sizeof(route_old->nexthop)); + + if (node_old) { + if (!(route_old->flags & DEVADDR_EXTERNAL) && route_old->enabled && !keep) + system_del_route(dev, route_old); + free(route_old); + } + + if (node_new) { + bool _enabled = enable_route(ip, route_new); + + if (!(route_new->flags & DEVADDR_EXTERNAL) && !keep && _enabled) + system_add_route(dev, route_new); + + route_new->enabled = _enabled; + } } -void interface_del_ctx_addr(struct interface *iface, void *ctx) +void +interface_add_dns_server(struct interface_ip_settings *ip, const char *str) { - struct device_addr *addr, *tmp; + struct dns_server *s; + + s = calloc(1, sizeof(*s)); + s->af = AF_INET; + if (inet_pton(s->af, str, &s->addr.in)) + goto add; + + s->af = AF_INET6; + if (inet_pton(s->af, str, &s->addr.in)) + goto add; - list_for_each_entry_safe(addr, tmp, &iface->address, list) { - if (ctx && addr->ctx != ctx) + free(s); + return; + +add: + D(INTERFACE, "Add IPv%c DNS server: %s\n", + s->af == AF_INET6 ? '6' : '4', str); + vlist_simple_add(&ip->dns_servers, &s->node); +} + +void +interface_add_dns_server_list(struct interface_ip_settings *ip, struct blob_attr *list) +{ + struct blob_attr *cur; + int rem; + + blobmsg_for_each_attr(cur, list, rem) { + if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING) continue; - interface_del_address(iface, addr); + if (!blobmsg_check_attr(cur, NULL)) + continue; + + interface_add_dns_server(ip, blobmsg_data(cur)); + } +} + +static void +interface_add_dns_search_domain(struct interface_ip_settings *ip, const char *str) +{ + struct dns_search_domain *s; + int len = strlen(str); + + s = calloc(1, sizeof(*s) + len + 1); + if (!s) + return; + + D(INTERFACE, "Add DNS search domain: %s\n", str); + memcpy(s->name, str, len); + vlist_simple_add(&ip->dns_search, &s->node); +} + +void +interface_add_dns_search_list(struct interface_ip_settings *ip, struct blob_attr *list) +{ + struct blob_attr *cur; + int rem; + + blobmsg_for_each_attr(cur, list, rem) { + if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING) + continue; + + if (!blobmsg_check_attr(cur, NULL)) + continue; + + interface_add_dns_search_domain(ip, blobmsg_data(cur)); + } +} + +static void +write_resolv_conf_entries(FILE *f, struct interface_ip_settings *ip) +{ + struct dns_server *s; + struct dns_search_domain *d; + const char *str; + char buf[32]; + + vlist_simple_for_each_element(&ip->dns_servers, s, node) { + str = inet_ntop(s->af, &s->addr, buf, sizeof(buf)); + if (!str) + continue; + + fprintf(f, "nameserver %s\n", str); + } + + vlist_simple_for_each_element(&ip->dns_search, d, node) { + fprintf(f, "search %s\n", d->name); + } +} + +void +interface_write_resolv_conf(void) +{ + struct interface *iface; + char *path = alloca(strlen(resolv_conf) + 5); + FILE *f; + + sprintf(path, "%s.tmp", resolv_conf); + unlink(path); + f = fopen(path, "w"); + if (!f) { + D(INTERFACE, "Failed to open %s for writing\n", path); + return; + } + + vlist_for_each_element(&interfaces, iface, node) { + if (iface->state != IFS_UP) + continue; + + if (vlist_simple_empty(&iface->proto_ip.dns_search) && + vlist_simple_empty(&iface->proto_ip.dns_servers) && + vlist_simple_empty(&iface->config_ip.dns_search) && + vlist_simple_empty(&iface->config_ip.dns_servers)) + continue; + + fprintf(f, "# Interface %s\n", iface->name); + write_resolv_conf_entries(f, &iface->config_ip); + write_resolv_conf_entries(f, &iface->proto_ip); + } + fclose(f); + if (rename(path, resolv_conf) < 0) { + D(INTERFACE, "Failed to replace %s\n", resolv_conf); + unlink(path); + } +} + +void interface_ip_set_enabled(struct interface_ip_settings *ip, bool enabled) +{ + struct device_addr *addr; + struct device_route *route; + struct device *dev; + + ip->enabled = enabled; + dev = ip->iface->l3_dev->dev; + if (!dev) + return; + + vlist_for_each_element(&ip->addr, addr, node) { + if (addr->enabled == enabled) + continue; + + if (enabled) + system_add_address(dev, addr); + else + system_del_address(dev, addr); + addr->enabled = enabled; + } + + vlist_for_each_element(&ip->route, route, node) { + bool _enabled = enabled; + + if (!enable_route(ip, route)) + _enabled = false; + + if (route->enabled == _enabled) + continue; + + if (_enabled) + system_add_route(dev, route); + else + system_del_route(dev, route); + route->enabled = _enabled; } } -int interface_add_route(struct interface *iface, struct device_route *route) +void +interface_ip_update_start(struct interface_ip_settings *ip) { - list_add_tail(&route->list, &iface->routes); - return system_add_route(iface->l3_iface->dev, route); + vlist_simple_update(&ip->dns_servers); + vlist_simple_update(&ip->dns_search); + vlist_update(&ip->route); + vlist_update(&ip->addr); } -void interface_del_route(struct interface *iface, struct device_route *route) +void +interface_ip_update_complete(struct interface_ip_settings *ip) { - list_del(&route->list); - system_del_route(iface->l3_iface->dev, route); + vlist_simple_flush(&ip->dns_servers); + vlist_simple_flush(&ip->dns_search); + vlist_flush(&ip->route); + vlist_flush(&ip->addr); } -void interface_del_all_routes(struct interface *iface) +void +interface_ip_flush(struct interface_ip_settings *ip) { - struct device_route *route, *tmp; + vlist_simple_flush_all(&ip->dns_servers); + vlist_simple_flush_all(&ip->dns_search); + vlist_flush_all(&ip->route); + vlist_flush_all(&ip->addr); +} - list_for_each_entry_safe(route, tmp, &iface->routes, list) - interface_del_route(iface, route); +void +interface_ip_init(struct interface_ip_settings *ip, struct interface *iface) +{ + ip->iface = iface; + ip->enabled = true; + vlist_simple_init(&ip->dns_search, struct dns_search_domain, node); + vlist_simple_init(&ip->dns_servers, struct dns_server, node); + vlist_init(&ip->route, route_cmp, interface_update_proto_route, + struct device_route, node, mask); + vlist_init(&ip->addr, addr_cmp, interface_update_proto_addr, + struct device_addr, node, mask); }