#include <string.h>
#include <stdlib.h>
#include <stdio.h>
+#include <unistd.h>
+
+#include <arpa/inet.h>
#include "netifd.h"
#include "device.h"
#include "interface.h"
+#include "interface-ip.h"
#include "proto.h"
#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_DEVICE,
+ ROUTE_METRIC,
+ ROUTE_MTU,
+ __ROUTE_LAST
+};
+
+static const struct blobmsg_policy route_attr[__ROUTE_LAST] = {
+ [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_DEVICE] = { .name = "device", .type = BLOBMSG_TYPE_STRING },
+ [ROUTE_METRIC] = { .name = "metric", .type = BLOBMSG_TYPE_INT32 },
+ [ROUTE_MTU] = { .name = "mtu", .type = BLOBMSG_TYPE_INT32 },
+};
+
+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_LAST], *cur;
+ struct device_route *route;
+ int af = v6 ? AF_INET6 : AF_INET;
+ bool config = false;
+
+ blobmsg_parse(route_attr, __ROUTE_LAST, tb, blobmsg_data(attr), blobmsg_data_len(attr));
+
+ if (!tb[ROUTE_GATEWAY] && !tb[ROUTE_DEVICE])
+ return;
+
+ if (!iface) {
+ if ((cur = tb[ROUTE_INTERFACE]) == NULL)
+ return;
+
+ iface = vlist_find(&interfaces, blobmsg_data(cur), iface, node);
+ if (!iface)
+ return;
- if (addr->flags & DEVADDR_INET6)
- family = AF_INET6;
- else
- family = AF_INET;
+ ip = &iface->config_ip;
+ config = true;
+ } 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;
+ }
+ }
- list_add(&addr->list, &iface->address);
- return system_add_address(iface->l3_iface->dev, addr);
+ 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;
+ }
+ }
+
+ if ((cur = tb[ROUTE_METRIC]) != NULL)
+ route->metric = blobmsg_get_u32(cur);
+
+ if ((cur = tb[ROUTE_MTU]) != NULL)
+ route->mtu = blobmsg_get_u32(cur);
+
+ if (!config && (cur = tb[ROUTE_DEVICE]) != NULL)
+ route->device = device_get(blobmsg_data(cur), true);
+
+ vlist_add(&ip->route, &route->node);
+ return;
+
+error:
+ free(route);
+}
+
+static int
+addr_cmp(const void *k1, const void *k2, void *ptr)
+{
+ return memcmp(k1, k2, sizeof(struct device_addr) -
+ offsetof(struct device_addr, mask));
+}
+
+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));
}
-void interface_del_address(struct interface *iface, struct device_addr *addr)
+static void
+interface_update_proto_addr(struct vlist_tree *tree,
+ struct vlist_node *node_new,
+ struct vlist_node *node_old)
{
- int family;
+ struct interface_ip_settings *ip;
+ struct interface *iface;
+ struct device *dev;
+ struct device_addr *addr;
- if (addr->flags & DEVADDR_INET6)
- family = AF_INET6;
- else
- family = AF_INET;
+ ip = container_of(tree, struct interface_ip_settings, addr);
+ iface = ip->iface;
+ dev = iface->l3_dev->dev;
- list_del(&addr->list);
- system_del_address(iface->l3_iface->dev, addr);
+ if (node_old) {
+ addr = container_of(node_old, struct device_addr, node);
+ if (!(addr->flags & DEVADDR_EXTERNAL) && addr->enabled)
+ system_del_address(dev, addr);
+ free(addr);
+ }
+
+ if (node_new) {
+ addr = container_of(node_new, struct device_addr, node);
+ if (!(addr->flags & DEVADDR_EXTERNAL))
+ system_add_address(dev, addr);
+ addr->enabled = 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;
+
+ ip = container_of(tree, struct interface_ip_settings, route);
+ iface = ip->iface;
+ dev = iface->l3_dev->dev;
+
+ if (node_old) {
+ route = container_of(node_old, struct device_route, node);
+ if (!(route->flags & DEVADDR_EXTERNAL) && route->enabled)
+ system_del_route(dev, route);
+ free(route);
+ }
+
+ if (node_new) {
+ route = container_of(node_new, struct device_route, node);
+ if (!(route->flags & DEVADDR_EXTERNAL))
+ system_add_route(dev, route);
+ route->enabled = true;
+ }
+}
+
+void
+interface_add_dns_server(struct interface_ip_settings *ip, const char *str)
+{
+ 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;
+
+ free(s);
+ return;
+
+add:
+ D(INTERFACE, "Add IPv%c DNS server: %s\n",
+ s->af == AF_INET6 ? '6' : '4', str);
+ list_add_tail(&s->list, &ip->dns_servers);
}
-void interface_del_ctx_addr(struct interface *iface, void *ctx)
+void
+interface_add_dns_server_list(struct interface_ip_settings *ip, struct blob_attr *list)
{
- struct device_addr *addr, *tmp;
+ struct blob_attr *cur;
+ int rem;
- list_for_each_entry_safe(addr, tmp, &iface->address, list) {
- if (ctx && addr->ctx != ctx)
+ 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));
}
}
-int interface_add_route(struct interface *iface, struct device_route *route)
+static void
+interface_add_dns_search_domain(struct interface_ip_settings *ip, const char *str)
{
- list_add(&route->list, &iface->routes);
- return system_add_route(iface->l3_iface->dev, route);
+ 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);
+ list_add_tail(&s->list, &ip->dns_search);
}
-void interface_del_route(struct interface *iface, struct device_route *route)
+void
+interface_add_dns_search_list(struct interface_ip_settings *ip, struct blob_attr *list)
{
- list_del(&route->list);
- system_del_route(iface->l3_iface->dev, route);
+ 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
+interface_clear_dns_servers(struct interface_ip_settings *ip)
+{
+ struct dns_server *s, *tmp;
+
+ list_for_each_entry_safe(s, tmp, &ip->dns_servers, list) {
+ list_del(&s->list);
+ free(s);
+ }
+}
+
+static void
+interface_clear_dns_search(struct interface_ip_settings *ip)
+{
+ struct dns_search_domain *s, *tmp;
+
+ list_for_each_entry_safe(s, tmp, &ip->dns_search, list) {
+ list_del(&s->list);
+ free(s);
+ }
+}
+
+void
+interface_write_resolv_conf(void)
+{
+ struct interface *iface;
+ struct dns_server *s;
+ struct dns_search_domain *d;
+ char *path = alloca(strlen(resolv_conf) + 5);
+ const char *str;
+ char buf[32];
+ 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 (list_empty(&iface->proto_ip.dns_search) &&
+ list_empty(&iface->proto_ip.dns_servers))
+ continue;
+
+ fprintf(f, "# Interface %s\n", iface->name);
+ list_for_each_entry(s, &iface->proto_ip.dns_servers, list) {
+ str = inet_ntop(s->af, &s->addr, buf, sizeof(buf));
+ if (!str)
+ continue;
+
+ fprintf(f, "nameserver %s\n", str);
+ }
+
+ list_for_each_entry(d, &iface->proto_ip.dns_search, list) {
+ fprintf(f, "search %s\n", d->name);
+ }
+ }
+ 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) {
+ if (route->enabled == enabled)
+ continue;
+
+ if (enabled)
+ system_add_route(dev, route);
+ else
+ system_del_route(dev, route);
+ route->enabled = enabled;
+ }
+}
+
+void
+interface_ip_update_start(struct interface_ip_settings *ip)
+{
+ interface_clear_dns_servers(ip);
+ interface_clear_dns_search(ip);
+ vlist_update(&ip->route);
+ vlist_update(&ip->addr);
+}
+
+void
+interface_ip_update_complete(struct interface_ip_settings *ip)
+{
+ 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;
+ interface_clear_dns_servers(ip);
+ interface_clear_dns_search(ip);
+ 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;
+ INIT_LIST_HEAD(&ip->dns_search);
+ INIT_LIST_HEAD(&ip->dns_servers);
+ 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);
}
projects / project / netifd.git / blobdiff