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// Based on proto/rip/rip.c
#include <stdio.h>
#include "nest/protocol.h"
#include "nest/iface.h"
#include "sysdep/linux/wireguard.h"
#include "wireguard.h"
#include "proto/bgp/bgp.h"
static void
wg_init_entry(void *e_)
{
struct wg_entry *e = e_;
// debug("wg_init_entry\n");
}
static void
wg_postconfig(struct proto_config *C)
{
C;
debug("postconfig\n");
}
static void
wg_if_notify(struct proto *P, unsigned flags, struct iface *i)
{
struct wg_proto *p = (struct wg_proto *) P;
struct wg_config *c = P->cf;
debug("WG: if_notify %p %s %d %s\n", i, i->name, flags, c->ifname);
if (c->ifname && !strcmp(i->name, c->ifname)) {
debug("WG: found ifname\n");
p->iface = i;
}
}
static void
wg_rt_notify(struct proto *P, rtable *src_table, net *n,
rte *new, rte *old, ea_list *attrs)
{
struct wg_proto *p = (struct wg_proto *) P;
struct wg_entry *en;
struct iface *iface = NULL;
const char *ifname = NULL;
// debug("WG: notify\n");
if (new) {
iface = new->attrs->nh.iface;
ifname = iface ? iface->name : NULL;
if (iface && iface == p->iface) {
struct eattr *t;
debug("WG: found iface\n");
en = fib_get(&p->rtable, n->n.addr);
debug("WG: notify new %d %N\n",
new->attrs->dest, n->n.addr);
t = ea_find(new->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_TUNNEL_ENCAP));
if (t) {
log(L_TRACE "WG: Attr %x %x", t->flags, t->type);
/*
struct sub_tlv_remove_endpoint {
u32 asn;
u8 address_family;
union {
ip4_addr ip4;
ip6_addr ip6;
};
};
struct sub_tlv_udp_dest_port {
u16 port;
};
struct sub_tlv_wireguard {
u8 pubkey[32];
};
struct sub_tlv {
u8 type;
union {
struct {
u8 length;
struct sub_tlv_value value[];
} s8;
struct {
u16 length;
struct sub_tlv_value value[];
} s16;
} u;
};
struct bgp_tunnel_encap_attr {
u16 type;
u16 length;
struct sub_tlv stlv[];
};
*/
} else {
log(L_TRACE "WG: No Attr");
}
// old_metric = en->valid ? en->metric : -1;
// en->valid = RIP_ENTRY_VALID;
// en->metric = rt_metric;
// en->tag = rt_tag;
// en->from = (new->attrs->src->proto == P) ? new->u.rip.from : NULL;
// en->iface = new->attrs->iface;
// en->next_hop = new->attrs->gw;
}
} else {
debug("WG: notify withdraw\n");
/* Withdraw */
en = fib_find(&p->rtable, n->n.addr);
if (!en) // || en->valid != RIP_ENTRY_VALID)
return;
/*
old_metric = en->metric;
en->valid = RIP_ENTRY_STALE;
en->metric = p->infinity;
en->tag = 0;
en->from = NULL;
en->iface = NULL;
en->next_hop = IPA_NONE;
*/
}
// TRACE(D_EVENTS, "wg notify %s %s", src_table->name, ifname?ifname:"(null)");
}
static int
wg_reload_routes(struct proto *P)
{
struct wg_proto *p = (struct wg_proto *) P;
debug("reload routes\n");
// TODO
// WALK_LIST(c, p->channels)
// channel_request_feeding(c);
return 1;
}
static struct proto *
wg_init(struct proto_config *C)
{
struct wg_config *c = (struct pipe_config *) C;
struct proto *P = proto_new(C);
struct wg_proto *p = (struct wg_proto *) P;
debug("init\n");
P->main_channel = proto_add_channel(P, proto_cf_main_channel(C));
P->if_notify = wg_if_notify;
P->rt_notify = wg_rt_notify;
P->reload_routes = wg_reload_routes;
// P->accept_ra_types = RA_ANY;
return P;
}
static int
wg_start(struct proto *P)
{
struct wg_config *cf = (struct wg_config *) P->cf;
struct wg_proto *p = (struct wg_proto *) P;
debug("start\n");
fib_init(&p->rtable, P->pool, P->net_type, sizeof(struct wg_entry),
OFFSETOF(struct wg_entry, n), 0, wg_init_entry);
return PS_UP;
}
static void
wg_dump(struct proto *P)
{
struct wg_proto *p = (struct wg_proto *) P;
int i;
i = 0;
FIB_WALK(&p->rtable, struct wg_entry, en)
{
// struct wg_entry *en = (struct wg_entry *) e;
debug("WG: entry #%d:\n",
i++);
}
FIB_WALK_END;
}
struct protocol proto_wireguard = {
.name = "Wireguard",
.template = "wg%d",
.class = PROTOCOL_WG,
.channel_mask = NB_ANY,
.proto_size = sizeof(struct wg_proto),
.config_size = sizeof(struct wg_config),
.postconfig = wg_postconfig,
.init = wg_init,
.start = wg_start,
.dump = wg_dump,
/* .multitable = 1,
.preference = DEF_PREF_PIPE,
.cleanup = wg_cleanup,
.reconfigure = wg_reconfigure,
.copy_config = wg_copy_config,
.get_status = wg_get_status,
.show_proto_info = wg_show_proto_info*/
};
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