#include <stdlib.h>
#include <stdio.h>
+#include <arpa/inet.h>
+#include <netinet/in.h>
+
#include "netifd.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_DNS,
+ OPT_DNS_SEARCH,
+ __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_DNS] = { .name = "dns", .type = BLOBMSG_TYPE_ARRAY },
+ [OPT_DNS_SEARCH] = { .name = "dns_search", .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)
+{
+ struct in_addr addr;
+ unsigned int ret;
+ char *err = NULL;
+
+ if (!strchr(str, '.')) {
+ ret = strtoul(str, &err, 0);
+ if (err && *err)
+ goto error;
+
+ return ret;
+ }
+
+ if (v6)
+ goto error;
+
+ if (inet_aton(str, &addr) != 1)
+ goto error;
+
+ return 32 - fls(~(ntohl(addr.s_addr)));
+
+error:
+ return ~0;
+}
+
+static bool
+split_netmask(char *str, unsigned int *netmask, bool v6)
+{
+ char *delim = strchr(str, '/');
+
+ if (delim) {
+ *(delim++) = 0;
+
+ *netmask = parse_netmask_string(delim, v6);
+ }
+ return true;
+}
+
+static int
+parse_ip_and_netmask(int af, const char *str, void *addr, unsigned int *netmask)
+{
+ char *astr = alloca(strlen(str) + 1);
+
+ strcpy(astr, str);
+ if (!split_netmask(astr, netmask, af == AF_INET6))
+ return 0;
+
+ if (af == AF_INET6) {
+ if (*netmask > 128)
+ return 0;
+ } else {
+ if (*netmask > 32)
+ return 0;
+ }
+
+ return inet_pton(af, astr, addr);
+}
+
+static struct device_addr *
+proto_parse_ip_addr_string(const char *str, bool v6, int mask)
+{
+ struct device_addr *addr;
+ int af = v6 ? AF_INET6 : AF_INET;
+
+ addr = calloc(1, sizeof(*addr));
+ addr->flags = v6 ? DEVADDR_INET6 : DEVADDR_INET4;
+ addr->mask = mask;
+ if (!parse_ip_and_netmask(af, str, &addr->addr, &addr->mask)) {
+ free(addr);
+ return NULL;
+ }
+ 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;
+
+ addr = proto_parse_ip_addr_string(str, v6, mask);
+ if (!addr) {
+ interface_add_error(iface, "proto", "INVALID_ADDRESS", &str, 1);
+ return false;
+ }
+
+ if (broadcast)
+ addr->broadcast = broadcast;
+
+ if (ext)
+ addr->flags |= DEVADDR_EXTERNAL;
+
+ vlist_add(&iface->proto_ip.addr, &addr->node, &addr->mask);
+ return true;
+}
+
+static int
+parse_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 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->mask);
+
+ return true;
+}
+
+int
+proto_apply_ip_settings(struct interface *iface, struct blob_attr *attr, bool ext)
+{
+ 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_address_option(iface, cur, false,
+ netmask, ext, bcast.s_addr);
+
+ if ((cur = tb[OPT_IP6ADDR]))
+ n_v6 = parse_address_option(iface, cur, true,
+ netmask, ext, 0);
+
+ if (!n_v4 && !n_v6) {
+ error = "NO_ADDRESS";
+ goto error;
+ }
+
+ 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_DNS]))
+ interface_add_dns_server_list(&iface->proto_ip, cur);
+
+ if ((cur = tb[OPT_DNS_SEARCH]))
+ interface_add_dns_search_list(&iface->proto_ip, cur);
+
+ return 0;
+
+error:
+ interface_add_error(iface, "proto", error, NULL, 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;
}
-struct interface_proto_state *get_default_proto(void)
+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->handler = default_proto_handler;
proto->free = default_proto_free;
- proto->flags = PROTO_FLAG_IMMEDIATE;
+ proto->cb = no_proto_handler;
return proto;
}
-int interface_proto_event(struct interface_proto_state *proto,
- enum interface_proto_cmd cmd, bool force)
+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_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->handler(proto, cmd, force);
- if (ret || !(proto->flags & PROTO_FLAG_IMMEDIATE))
+ 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;
projects / project / netifd.git / blobdiff