/*
* Read interface up/down msg (ZEBRA_INTERFACE_UP/ZEBRA_INTERFACE_DOWN)
* from zebra server. The format of this message is the same as
* that sent for ZEBRA_INTERFACE_ADD/ZEBRA_INTERFACE_DELETE (see
* comments for zebra_interface_add_read), except that no sockaddr_dl
* is sent at the tail of the message.
*/
struct interface *
zebra_interface_state_read (struct stream *s)
{
struct interface *ifp;
char ifname_tmp[INTERFACE_NAMSIZ];
/* Read interface name. */
stream_get (ifname_tmp, s, INTERFACE_NAMSIZ);
/* Lookup this by interface index. */
ifp = if_lookup_by_name_len (ifname_tmp,
strnlen(ifname_tmp, INTERFACE_NAMSIZ));
/* If such interface does not exist, indicate an error */
if (! ifp)
return NULL;
/* Read interface's index. */
ifp->ifindex = stream_getl (s);
/* Read interface's value. */
ifp->status = stream_getc (s);
ifp->flags = stream_getq (s);
ifp->metric = stream_getl (s);
ifp->mtu = stream_getl (s);
ifp->mtu6 = stream_getl (s);
ifp->bandwidth = stream_getl (s);
return ifp;
}
static void
link_params_set_value(struct stream *s, struct if_link_params *iflp)
{
if (iflp == NULL)
return;
iflp->lp_status = stream_getl (s);
iflp->te_metric = stream_getl (s);
iflp->max_bw = stream_getf (s);
iflp->max_rsv_bw = stream_getf (s);
uint32_t bwclassnum = stream_getl (s);
{
unsigned int i;
for (i = 0; i < bwclassnum && i < MAX_CLASS_TYPE; i++)
iflp->unrsv_bw[i] = stream_getf (s);
if (i < bwclassnum)
zlog_err ("%s: received %d > %d (MAX_CLASS_TYPE) bw entries"
" - outdated library?",
__func__, bwclassnum, MAX_CLASS_TYPE);
}
iflp->admin_grp = stream_getl (s);
iflp->rmt_as = stream_getl (s);
iflp->rmt_ip.s_addr = stream_get_ipv4 (s);
iflp->av_delay = stream_getl (s);
iflp->min_delay = stream_getl (s);
iflp->max_delay = stream_getl (s);
iflp->delay_var = stream_getl (s);
iflp->pkt_loss = stream_getf (s);
iflp->res_bw = stream_getf (s);
iflp->ava_bw = stream_getf (s);
iflp->use_bw = stream_getf (s);
}
/* Zebra route add and delete treatment. */
static int
rip_zebra_read_ipv4 (int command, struct zclient *zclient, zebra_size_t length)
{
struct stream *s;
struct zapi_ipv4 api;
unsigned long ifindex;
struct in_addr nexthop;
struct prefix_ipv4 p;
s = zclient->ibuf;
ifindex = 0;
nexthop.s_addr = 0;
/* Type, flags, message. */
api.type = stream_getc (s);
api.flags = stream_getc (s);
api.message = stream_getc (s);
/* IPv4 prefix. */
memset (&p, 0, sizeof (struct prefix_ipv4));
p.family = AF_INET;
p.prefixlen = stream_getc (s);
stream_get (&p.prefix, s, PSIZE (p.prefixlen));
/* Nexthop, ifindex, distance, metric. */
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP))
{
api.nexthop_num = stream_getc (s);
nexthop.s_addr = stream_get_ipv4 (s);
}
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_IFINDEX))
{
api.ifindex_num = stream_getc (s);
ifindex = stream_getl (s);
}
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE))
api.distance = stream_getc (s);
else
api.distance = 255;
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_METRIC))
api.metric = stream_getl (s);
else
api.metric = 0;
/* Then fetch IPv4 prefixes. */
if (command == ZEBRA_IPV4_ROUTE_ADD)
rip_redistribute_add (api.type, RIP_ROUTE_REDISTRIBUTE, &p, ifindex,
&nexthop, api.metric, api.distance);
else
rip_redistribute_delete (api.type, RIP_ROUTE_REDISTRIBUTE, &p, ifindex);
return 0;
}
static int
babel_zebra_read_ipv4 (int command, struct zclient *zclient,
zebra_size_t length)
{
struct stream *s;
struct zapi_ipv4 api;
unsigned long ifindex = -1;
struct in_addr nexthop;
struct prefix_ipv4 prefix;
s = zclient->ibuf;
ifindex = 0;
memset (&nexthop, 0, sizeof (struct in_addr));
memset (&api, 0, sizeof(struct zapi_ipv4));
memset (&prefix, 0, sizeof (struct prefix_ipv4));
/* Type, flags, message. */
api.type = stream_getc (s);
api.flags = stream_getc (s);
api.message = stream_getc (s);
/* IPv6 prefix. */
prefix.family = AF_INET;
prefix.prefixlen = stream_getc (s);
stream_get (&prefix.prefix, s, PSIZE (prefix.prefixlen));
/* Nexthop, ifindex, distance, metric. */
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP)) {
api.nexthop_num = stream_getc (s);
stream_get (&nexthop, s, sizeof(nexthop));
}
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_IFINDEX)) {
api.ifindex_num = stream_getc (s);
ifindex = stream_getl (s);
}
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE))
api.distance = stream_getc (s);
else
api.distance = 0;
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_METRIC))
api.metric = stream_getl (s);
else
api.metric = 0;
if (command == ZEBRA_IPV6_ROUTE_ADD) {
babel_ipv4_route_add(&api, &prefix, ifindex, &nexthop);
} else {
babel_ipv4_route_delete(&api, &prefix, ifindex);
}
return 0;
}
/* Zebra route add and delete treatment. */
int
ripng_zebra_read_ipv6 (int command, struct zclient *zclient,
zebra_size_t length)
{
struct stream *s;
struct zapi_ipv6 api;
unsigned long ifindex;
struct in6_addr nexthop;
struct prefix_ipv6 p;
s = zclient->ibuf;
ifindex = 0;
memset (&nexthop, 0, sizeof (struct in6_addr));
/* Type, flags, message. */
api.type = stream_getc (s);
api.flags = stream_getc (s);
api.message = stream_getc (s);
/* IPv6 prefix. */
memset (&p, 0, sizeof (struct prefix_ipv6));
p.family = AF_INET6;
p.prefixlen = stream_getc (s);
stream_get (&p.prefix, s, PSIZE (p.prefixlen));
/* Nexthop, ifindex, distance, metric. */
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP))
{
api.nexthop_num = stream_getc (s);
stream_get (&nexthop, s, 16);
}
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_IFINDEX))
{
api.ifindex_num = stream_getc (s);
ifindex = stream_getl (s);
}
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE))
api.distance = stream_getc (s);
else
api.distance = 0;
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_METRIC))
api.metric = stream_getl (s);
else
api.metric = 0;
if (command == ZEBRA_IPV6_ROUTE_ADD)
ripng_redistribute_add (api.type, 0, &p, ifindex);
else
ripng_redistribute_delete (api.type, 0, &p, ifindex);
return 0;
}
void
zebra_interface_if_set_value (struct stream *s, struct interface *ifp)
{
/* Read interface's index. */
ifp->ifindex = stream_getl (s);
ifp->status = stream_getc (s);
/* Read interface's value. */
ifp->flags = stream_getq (s);
ifp->metric = stream_getl (s);
ifp->mtu = stream_getl (s);
ifp->mtu6 = stream_getl (s);
ifp->bandwidth = stream_getl (s);
}
int
main (void)
{
struct stream *s;
s = stream_new (1024);
stream_putc (s, ham);
stream_putw (s, ham);
stream_putl (s, ham);
stream_putq (s, ham);
print_stream (s);
stream_resize (s, stream_get_endp (s));
print_stream (s);
printf ("c: 0x%hhx\n", stream_getc (s));
printf ("w: 0x%hx\n", stream_getw (s));
printf ("l: 0x%x\n", stream_getl (s));
printf ("q: 0x%" PRIu64 "\n", stream_getq (s));
return 0;
}
static void ospf_packet_ls_req_dump(struct stream *s, uint16_t length)
{
uint32_t sp;
uint32_t ls_type;
struct in_addr ls_id;
struct in_addr adv_router;
sp = stream_get_getp(s);
length -= OSPF_HEADER_SIZE;
zlog_debug("Link State Request");
zlog_debug(" # Requests %d", length / 12);
for (; length > 0; length -= 12) {
ls_type = stream_getl(s);
ls_id.s_addr = stream_get_ipv4(s);
adv_router.s_addr = stream_get_ipv4(s);
zlog_debug(" LS type %d", ls_type);
zlog_debug(" Link State ID %s", inet_ntoa(ls_id));
zlog_debug(" Advertising Router %s", inet_ntoa(adv_router));
}
stream_set_getp(s, sp);
}
int
isis_zebra_read_ipv4 (int command, struct zclient *zclient,
zebra_size_t length)
{
struct stream *stream;
struct zapi_ipv4 api;
struct prefix_ipv4 p;
unsigned long ifindex;
struct in_addr nexthop;
stream = zclient->ibuf;
memset (&p, 0, sizeof (struct prefix_ipv4));
ifindex = 0;
api.type = stream_getc (stream);
api.flags = stream_getc (stream);
api.message = stream_getc (stream);
p.family = AF_INET;
p.prefixlen = stream_getc (stream);
stream_get (&p.prefix, stream, PSIZE (p.prefixlen));
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP))
{
api.nexthop_num = stream_getc (stream);
nexthop.s_addr = stream_get_ipv4 (stream);
}
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_IFINDEX))
{
api.ifindex_num = stream_getc (stream);
ifindex = stream_getl (stream);
}
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE))
api.distance = stream_getc (stream);
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_METRIC))
api.metric = stream_getl (stream);
else
api.metric = 0;
if (command == ZEBRA_IPV4_ROUTE_ADD)
{
zlog_debug ("IPv4 Route add from Z");
}
return 0;
}
struct connected *
zebra_interface_address_read (int type, struct stream *s)
{
unsigned int ifindex;
struct interface *ifp;
struct connected *ifc;
struct prefix p, d;
int family;
int plen;
u_char ifc_flags;
memset (&p, 0, sizeof(p));
memset (&d, 0, sizeof(d));
/* Get interface index. */
ifindex = stream_getl (s);
/* Lookup index. */
ifp = if_lookup_by_index (ifindex);
if (ifp == NULL)
{
zlog_warn ("zebra_interface_address_read(%s): "
"Can't find interface by ifindex: %d ",
(type == ZEBRA_INTERFACE_ADDRESS_ADD? "ADD" : "DELETE"),
ifindex);
return NULL;
}
/* Fetch flag. */
ifc_flags = stream_getc (s);
/* Fetch interface address. */
family = p.family = stream_getc (s);
plen = prefix_blen (&p);
stream_get (&p.u.prefix, s, plen);
p.prefixlen = stream_getc (s);
/* Fetch destination address. */
stream_get (&d.u.prefix, s, plen);
d.family = family;
if (type == ZEBRA_INTERFACE_ADDRESS_ADD)
{
/* N.B. NULL destination pointers are encoded as all zeroes */
ifc = connected_add_by_prefix(ifp, &p,(memconstant(&d.u.prefix,0,plen) ?
NULL : &d));
if (ifc != NULL)
ifc->flags = ifc_flags;
}
else
{
assert (type == ZEBRA_INTERFACE_ADDRESS_DELETE);
ifc = connected_delete_by_prefix(ifp, &p);
}
return ifc;
}
void
zebra_interface_if_set_value (struct stream *s, struct interface *ifp)
{
u_char link_params_status = 0;
/* Read interface's index. */
ifp->ifindex = stream_getl (s);
ifp->status = stream_getc (s);
/* Read interface's value. */
ifp->flags = stream_getq (s);
ifp->metric = stream_getl (s);
ifp->mtu = stream_getl (s);
ifp->mtu6 = stream_getl (s);
ifp->bandwidth = stream_getl (s);
ifp->ll_type = stream_getl (s);
ifp->hw_addr_len = stream_getl (s);
if (ifp->hw_addr_len)
stream_get (ifp->hw_addr, s, MIN(ifp->hw_addr_len, INTERFACE_HWADDR_MAX));
/* Read Traffic Engineering status */
link_params_status = stream_getc (s);
/* Then, Traffic Engineering parameters if any */
if (link_params_status)
{
struct if_link_params *iflp = if_link_params_get (ifp);
link_params_set_value(s, iflp);
}
}
static as_t
bgp_capability_as4 (struct peer *peer, struct capability_header *hdr)
{
as_t as4 = stream_getl (BGP_INPUT(peer));
if (BGP_DEBUG (as4, AS4))
zlog_debug ("%s [AS4] about to set cap PEER_CAP_AS4_RCV, got as4 %u",
peer->host, as4);
SET_FLAG (peer->cap, PEER_CAP_AS4_RCV);
return as4;
}
struct interface *
zebra_interface_add_read (struct stream *s)
{
struct interface *ifp;
char ifname_tmp[INTERFACE_NAMSIZ];
/* Read interface name. */
stream_get (ifname_tmp, s, INTERFACE_NAMSIZ);
/* Lookup/create interface by name. */
ifp = if_get_by_name_len (ifname_tmp, strnlen(ifname_tmp, INTERFACE_NAMSIZ));
/* Read interface's index. */
ifp->ifindex = stream_getl (s);
/* Read interface's value. */
ifp->status = stream_getc (s);
ifp->flags = stream_getq (s);
ifp->metric = stream_getl (s);
ifp->mtu = stream_getl (s);
ifp->mtu6 = stream_getl (s);
ifp->bandwidth = stream_getl (s);
#ifdef HAVE_SOCKADDR_DL
stream_get (&ifp->sdl, s, sizeof (ifp->sdl));
#else
ifp->hw_addr_len = stream_getl (s);
if (ifp->hw_addr_len)
stream_get (ifp->hw_addr, s, ifp->hw_addr_len);
#endif /* HAVE_SOCKADDR_DL */
return ifp;
}
int ppp_tcp_read(struct thread *thread)
{
struct ppp_mcp_sock *peer;
//int data_len;
/* Yes first of all get peer pointer. */
peer = THREAD_ARG (thread);
peer->t_read = NULL;
if (peer->fd < 0)
{
PPPD_DEBUG_TCP("read: peer's fd is negative value %d", peer->fd);
return -1;
}
MCP_READ_ON (peer->t_read, ppp_tcp_read, peer, peer->fd);
if (peer->packet_size == 0)
peer->packet_size = MCP_PPP_HEADER_SIZE;
if (stream_get_endp (peer->ibuf) < MCP_PPP_HEADER_SIZE) {
if(mcp_pppd_read(peer) == -1)
return 0;
peer->packet_size = stream_getl(peer->ibuf);
peer->control_cmd = stream_getl(peer->ibuf);
}
if(mcp_pppd_read(peer) == -1) {
PPPD_DEBUG_TCP("ppp read tcp error:%s", peer->hostname);
return 0;
}
mcp_pppd_tcp_read_deal(peer);
stream_reset (peer->ibuf);
peer->packet_size = 0;
pppd_postpone_holdtime_timer(peer);
return 0;
}
static as_t
bgp_capability_as4 (struct peer *peer, struct capability_header *hdr)
{
SET_FLAG (peer->cap, PEER_CAP_AS4_RCV);
if (hdr->length != CAPABILITY_CODE_AS4_LEN)
{
zlog_err ("%s AS4 capability has incorrect data length %d",
peer->host, hdr->length);
return 0;
}
as_t as4 = stream_getl (BGP_INPUT(peer));
if (BGP_DEBUG (as4, AS4))
zlog_debug ("%s [AS4] about to set cap PEER_CAP_AS4_RCV, got as4 %u",
peer->host, as4);
return as4;
}
void
zebra_interface_if_set_value (struct stream *s, struct interface *ifp)
{
/* Read interface's index. */
ifp->ifindex = stream_getl (s);
ifp->status = stream_getc (s);
/* Read interface's value. */
ifp->flags = stream_getq (s);
ifp->metric = stream_getl (s);
ifp->mtu = stream_getl (s);
ifp->mtu6 = stream_getl (s);
ifp->bandwidth = stream_getl (s);
ifp->ll_type = stream_getl (s);
ifp->hw_addr_len = stream_getl (s);
if (ifp->hw_addr_len)
stream_get (ifp->hw_addr, s, MIN(ifp->hw_addr_len, INTERFACE_HWADDR_MAX));
}
void
zebra_read_ipv6 (int command, struct zserv *client, u_short length)
{
u_char type;
u_char flags;
struct in6_addr nexthop, *gate;
u_char *lim;
u_char *pnt;
unsigned int ifindex;
pnt = stream_pnt (client->ibuf);
lim = pnt + length;
type = stream_getc (client->ibuf);
flags = stream_getc (client->ibuf);
stream_get (&nexthop, client->ibuf, sizeof (struct in6_addr));
while (stream_pnt (client->ibuf) < lim)
{
int size;
struct prefix_ipv6 p;
ifindex = stream_getl (client->ibuf);
memset (&p, 0, sizeof (struct prefix_ipv6));
p.family = AF_INET6;
p.prefixlen = stream_getc (client->ibuf);
size = PSIZE(p.prefixlen);
stream_get (&p.prefix, client->ibuf, size);
if (IN6_IS_ADDR_UNSPECIFIED (&nexthop))
gate = NULL;
else
gate = &nexthop;
if (command == ZEBRA_IPV6_ROUTE_ADD)
rib_add_ipv6 (type, flags, &p, gate, ifindex, 0, 0, 0);
else
rib_delete_ipv6 (type, flags, &p, gate, ifindex, 0);
}
}
struct interface *
zebra_interface_link_params_read (struct stream *s)
{
struct if_link_params *iflp;
uint32_t ifindex = stream_getl (s);
struct interface *ifp = if_lookup_by_index (ifindex);
if (ifp == NULL || s == NULL)
{
zlog_err ("%s: unknown ifindex %u, shouldn't happen",
__func__, ifindex);
return NULL;
}
if ((iflp = if_link_params_get (ifp)) == NULL)
return NULL;
link_params_set_value(s, iflp);
return ifp;
}
struct interface_FOO *
zebra_interface_add_read (struct stream *s)
{
struct interface_FOO *ifp;
char ifname_tmp[INTERFACE_NAMSIZ];
/* Read interface name. */
stream_get (ifname_tmp, s, INTERFACE_NAMSIZ);
/* Lookup this by interface name. */
ifp = if_lookup_by_name (ifname_tmp);
/* If such interface does not exist, make new one. */
if (! ifp)
ifp = if_create (ifname_tmp, INTERFACE_NAMSIZ);
/* Read interface's index. */
ifp->ifindex = stream_getl (s);
/* Read interface's value. */
ifp->status = stream_getc (s);
ifp->flags = stream_getl (s);
ifp->metric = stream_getl (s);
ifp->mtu = stream_getl (s);
ifp->mtu6 = stream_getl (s);
ifp->bandwidth = stream_getl (s);
#ifdef HAVE_SOCKADDR_DL
stream_get (&ifp->sdl, s, sizeof (ifp->sdl));
#else
ifp->hw_addr_len = stream_getl (s);
if (ifp->hw_addr_len)
stream_get (ifp->hw_addr, s, ifp->hw_addr_len);
#endif /* HAVE_SOCKADDR_DL */
return ifp;
}
void
zebra_interface_if_set_value (struct stream *s, struct interface *ifp)
{
/* Read interface's index. */
ifp->ifindex = stream_getl (s);
ifp->status = stream_getc (s);
/* Read interface's value. */
ifp->flags = stream_getq (s);
ifp->metric = stream_getl (s);
ifp->mtu = stream_getl (s);
ifp->mtu6 = stream_getl (s);
ifp->bandwidth = stream_getl (s);
#ifdef HAVE_STRUCT_SOCKADDR_DL
stream_get (&ifp->sdl, s, sizeof (ifp->sdl_storage));
#else
ifp->hw_addr_len = stream_getl (s);
if (ifp->hw_addr_len)
stream_get (ifp->hw_addr, s, ifp->hw_addr_len);
#endif /* HAVE_STRUCT_SOCKADDR_DL */
}
static int
ospf6_zebra_read_ipv6 (int command, struct zclient *zclient,
zebra_size_t length)
{
struct stream *s;
struct zapi_ipv6 api;
unsigned long ifindex;
struct prefix_ipv6 p;
struct in6_addr *nexthop;
s = zclient->ibuf;
ifindex = 0;
nexthop = NULL;
memset (&api, 0, sizeof (api));
/* Type, flags, message. */
api.type = stream_getc (s);
api.flags = stream_getc (s);
api.message = stream_getc (s);
/* IPv6 prefix. */
memset (&p, 0, sizeof (struct prefix_ipv6));
p.family = AF_INET6;
p.prefixlen = stream_getc (s);
stream_get (&p.prefix, s, PSIZE (p.prefixlen));
/* Nexthop, ifindex, distance, metric. */
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP))
{
api.nexthop_num = stream_getc (s);
nexthop = (struct in6_addr *)
malloc (api.nexthop_num * sizeof (struct in6_addr));
stream_get (nexthop, s, api.nexthop_num * sizeof (struct in6_addr));
}
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_IFINDEX))
{
api.ifindex_num = stream_getc (s);
ifindex = stream_getl (s);
}
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE))
api.distance = stream_getc (s);
else
api.distance = 0;
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_METRIC))
api.metric = stream_getl (s);
else
api.metric = 0;
if (IS_OSPF6_DEBUG_ZEBRA (RECV))
{
char prefixstr[128], nexthopstr[128];
prefix2str ((struct prefix *)&p, prefixstr, sizeof (prefixstr));
if (nexthop)
inet_ntop (AF_INET6, nexthop, nexthopstr, sizeof (nexthopstr));
else
snprintf (nexthopstr, sizeof (nexthopstr), "::");
zlog_debug ("Zebra Receive route %s: %s %s nexthop %s ifindex %ld",
(command == ZEBRA_IPV6_ROUTE_ADD ? "add" : "delete"),
zebra_route_string(api.type), prefixstr, nexthopstr, ifindex);
}
if (command == ZEBRA_IPV6_ROUTE_ADD)
ospf6_asbr_redistribute_add (api.type, ifindex, (struct prefix *) &p,
api.nexthop_num, nexthop);
else
ospf6_asbr_redistribute_remove (api.type, ifindex, (struct prefix *) &p);
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP))
free (nexthop);
return 0;
}
static int
bgp_import_check (struct prefix *p, u_int32_t *igpmetric,
struct in_addr *igpnexthop)
{
struct stream *s;
int ret;
u_int16_t length, command;
u_char version, marker;
int nbytes;
struct in_addr addr;
struct in_addr nexthop;
u_int32_t metric = 0;
u_char nexthop_num;
u_char nexthop_type;
/* If lookup connection is not available return valid. */
if (zlookup->sock < 0)
{
if (igpmetric)
*igpmetric = 0;
return 1;
}
/* Send query to the lookup connection */
s = zlookup->obuf;
stream_reset (s);
zclient_create_header (s, ZEBRA_IPV4_IMPORT_LOOKUP);
stream_putc (s, p->prefixlen);
stream_put_in_addr (s, &p->u.prefix4);
stream_putw_at (s, 0, stream_get_endp (s));
/* Write the packet. */
ret = writen (zlookup->sock, s->data, stream_get_endp (s));
if (ret < 0)
{
zlog_err ("can't write to zlookup->sock");
close (zlookup->sock);
zlookup->sock = -1;
return 1;
}
if (ret == 0)
{
zlog_err ("zlookup->sock connection closed");
close (zlookup->sock);
zlookup->sock = -1;
return 1;
}
/* Get result. */
stream_reset (s);
/* Fetch length. */
nbytes = stream_read (s, zlookup->sock, 2);
length = stream_getw (s);
/* Fetch whole data. */
nbytes = stream_read (s, zlookup->sock, length - 2);
marker = stream_getc (s);
version = stream_getc (s);
if (version != ZSERV_VERSION || marker != ZEBRA_HEADER_MARKER)
{
zlog_err("%s: socket %d version mismatch, marker %d, version %d",
__func__, zlookup->sock, marker, version);
return 0;
}
command = stream_getw (s);
addr.s_addr = stream_get_ipv4 (s);
metric = stream_getl (s);
nexthop_num = stream_getc (s);
/* Set IGP metric value. */
if (igpmetric)
*igpmetric = metric;
/* If there is nexthop then this is active route. */
if (nexthop_num)
{
nexthop.s_addr = 0;
nexthop_type = stream_getc (s);
if (nexthop_type == ZEBRA_NEXTHOP_IPV4)
{
nexthop.s_addr = stream_get_ipv4 (s);
if (igpnexthop)
*igpnexthop = nexthop;
}
else
*igpnexthop = nexthop;
return 1;
}
else
return 0;
}
static struct bgp_nexthop_cache *
zlookup_read_ipv6 (void)
{
struct stream *s;
uint16_t length;
u_char version, marker;
uint16_t command;
int nbytes;
struct in6_addr raddr;
uint32_t metric;
int i;
u_char nexthop_num;
struct nexthop *nexthop;
struct bgp_nexthop_cache *bnc;
s = zlookup->ibuf;
stream_reset (s);
nbytes = stream_read (s, zlookup->sock, 2);
length = stream_getw (s);
nbytes = stream_read (s, zlookup->sock, length - 2);
marker = stream_getc (s);
version = stream_getc (s);
if (version != ZSERV_VERSION || marker != ZEBRA_HEADER_MARKER)
{
zlog_err("%s: socket %d version mismatch, marker %d, version %d",
__func__, zlookup->sock, marker, version);
return NULL;
}
command = stream_getw (s);
stream_get (&raddr, s, 16);
metric = stream_getl (s);
nexthop_num = stream_getc (s);
if (nexthop_num)
{
bnc = bnc_new ();
bnc->valid = 1;
bnc->metric = metric;
bnc->nexthop_num = nexthop_num;
for (i = 0; i < nexthop_num; i++)
{
nexthop = XCALLOC (MTYPE_NEXTHOP, sizeof (struct nexthop));
nexthop->type = stream_getc (s);
switch (nexthop->type)
{
case ZEBRA_NEXTHOP_IPV6:
stream_get (&nexthop->gate.ipv6, s, 16);
break;
case ZEBRA_NEXTHOP_IPV6_IFINDEX:
case ZEBRA_NEXTHOP_IPV6_IFNAME:
stream_get (&nexthop->gate.ipv6, s, 16);
nexthop->ifindex = stream_getl (s);
break;
case ZEBRA_NEXTHOP_IFINDEX:
case ZEBRA_NEXTHOP_IFNAME:
nexthop->ifindex = stream_getl (s);
break;
default:
/* do nothing */
break;
}
bnc_nexthop_add (bnc, nexthop);
}
}
else
return NULL;
return bnc;
}
static void ospf_packet_ls_upd_dump(struct stream *s, uint16_t length)
{
uint32_t sp;
struct lsa_header *lsa;
int lsa_len;
uint32_t count;
length -= OSPF_HEADER_SIZE;
sp = stream_get_getp(s);
count = stream_getl(s);
length -= 4;
zlog_debug("Link State Update");
zlog_debug(" # LSAs %d", count);
while (length > 0 && count > 0) {
if (length < OSPF_HEADER_SIZE || length % 4 != 0) {
zlog_debug(" Remaining %d bytes; Incorrect length.",
length);
break;
}
lsa = (struct lsa_header *)stream_pnt(s);
lsa_len = ntohs(lsa->length);
ospf_lsa_header_dump(lsa);
switch (lsa->type) {
case OSPF_ROUTER_LSA:
ospf_router_lsa_dump(s, length);
break;
case OSPF_NETWORK_LSA:
ospf_network_lsa_dump(s, length);
break;
case OSPF_SUMMARY_LSA:
case OSPF_ASBR_SUMMARY_LSA:
ospf_summary_lsa_dump(s, length);
break;
case OSPF_AS_EXTERNAL_LSA:
ospf_as_external_lsa_dump(s, length);
break;
case OSPF_AS_NSSA_LSA:
ospf_as_external_lsa_dump(s, length);
break;
case OSPF_OPAQUE_LINK_LSA:
case OSPF_OPAQUE_AREA_LSA:
case OSPF_OPAQUE_AS_LSA:
ospf_opaque_lsa_dump(s, length);
break;
default:
break;
}
stream_forward_getp(s, lsa_len);
length -= lsa_len;
count--;
}
stream_set_getp(s, sp);
}
static int zclient_read_nexthop(struct zclient *zlookup,
struct pim_zlookup_nexthop nexthop_tab[],
const int tab_size,
struct in_addr addr)
{
int num_ifindex = 0;
struct stream *s;
const uint16_t MIN_LEN = 14; /* getc=1 getc=1 getw=2 getipv4=4 getc=1 getl=4 getc=1 */
uint16_t length, len;
u_char marker;
u_char version;
uint16_t command;
int nbytes;
struct in_addr raddr;
uint8_t distance;
uint32_t metric;
int nexthop_num;
int i;
if (PIM_DEBUG_ZEBRA) {
char addr_str[100];
pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str));
zlog_debug("%s: addr=%s",
__PRETTY_FUNCTION__,
addr_str);
}
s = zlookup->ibuf;
stream_reset(s);
nbytes = stream_read(s, zlookup->sock, 2);
if (nbytes < 2) {
zlog_err("%s %s: failure reading zclient lookup socket: nbytes=%d",
__FILE__, __PRETTY_FUNCTION__, nbytes);
zclient_lookup_failed(zlookup);
return -1;
}
length = stream_getw(s);
len = length - 2;
if (len < MIN_LEN) {
zlog_err("%s %s: failure reading zclient lookup socket: len=%d < MIN_LEN=%d",
__FILE__, __PRETTY_FUNCTION__, len, MIN_LEN);
zclient_lookup_failed(zlookup);
return -2;
}
nbytes = stream_read(s, zlookup->sock, len);
if (nbytes < (length - 2)) {
zlog_err("%s %s: failure reading zclient lookup socket: nbytes=%d < len=%d",
__FILE__, __PRETTY_FUNCTION__, nbytes, len);
zclient_lookup_failed(zlookup);
return -3;
}
marker = stream_getc(s);
version = stream_getc(s);
if (version != ZSERV_VERSION || marker != ZEBRA_HEADER_MARKER) {
zlog_err("%s: socket %d version mismatch, marker %d, version %d",
__func__, zlookup->sock, marker, version);
return -4;
}
command = stream_getw(s);
if (command != ZEBRA_IPV4_NEXTHOP_LOOKUP_MRIB) {
zlog_err("%s: socket %d command mismatch: %d",
__func__, zlookup->sock, command);
return -5;
}
raddr.s_addr = stream_get_ipv4(s);
if (raddr.s_addr != addr.s_addr) {
char addr_str[100];
char raddr_str[100];
pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str));
pim_inet4_dump("<raddr?>", raddr, raddr_str, sizeof(raddr_str));
zlog_warn("%s: address mismatch: addr=%s raddr=%s",
__PRETTY_FUNCTION__,
addr_str, raddr_str);
/* warning only */
}
distance = stream_getc(s);
metric = stream_getl(s);
nexthop_num = stream_getc(s);
if (nexthop_num < 1) {
zlog_err("%s: socket %d bad nexthop_num=%d",
__func__, zlookup->sock, nexthop_num);
return -6;
}
len -= MIN_LEN;
for (i = 0; i < nexthop_num; ++i) {
enum nexthop_types_t nexthop_type;
if (len < 1) {
zlog_err("%s: socket %d empty input expecting nexthop_type: len=%d",
__func__, zlookup->sock, len);
return -7;
}
nexthop_type = stream_getc(s);
--len;
switch (nexthop_type) {
case ZEBRA_NEXTHOP_IFINDEX:
case ZEBRA_NEXTHOP_IFNAME:
case ZEBRA_NEXTHOP_IPV4_IFINDEX:
if (num_ifindex >= tab_size) {
char addr_str[100];
pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str));
zlog_warn("%s %s: found too many nexthop ifindexes (%d > %d) for address %s",
__FILE__, __PRETTY_FUNCTION__,
(num_ifindex + 1), tab_size, addr_str);
return num_ifindex;
}
if (nexthop_type == ZEBRA_NEXTHOP_IPV4_IFINDEX) {
if (len < 4) {
zlog_err("%s: socket %d short input expecting nexthop IPv4-addr: len=%d",
__func__, zlookup->sock, len);
return -8;
}
nexthop_tab[num_ifindex].nexthop_addr.s_addr = stream_get_ipv4(s);
len -= 4;
}
else {
nexthop_tab[num_ifindex].nexthop_addr.s_addr = PIM_NET_INADDR_ANY;
}
nexthop_tab[num_ifindex].ifindex = stream_getl(s);
nexthop_tab[num_ifindex].protocol_distance = distance;
nexthop_tab[num_ifindex].route_metric = metric;
++num_ifindex;
break;
case ZEBRA_NEXTHOP_IPV4:
if (num_ifindex >= tab_size) {
char addr_str[100];
pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str));
zlog_warn("%s %s: found too many nexthop ifindexes (%d > %d) for address %s",
__FILE__, __PRETTY_FUNCTION__,
(num_ifindex + 1), tab_size, addr_str);
return num_ifindex;
}
nexthop_tab[num_ifindex].nexthop_addr.s_addr = stream_get_ipv4(s);
len -= 4;
nexthop_tab[num_ifindex].ifindex = 0;
nexthop_tab[num_ifindex].protocol_distance = distance;
nexthop_tab[num_ifindex].route_metric = metric;
{
char addr_str[100];
char nexthop_str[100];
pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str));
pim_inet4_dump("<nexthop?>", nexthop_tab[num_ifindex].nexthop_addr, nexthop_str, sizeof(nexthop_str));
zlog_warn("%s %s: zebra returned recursive nexthop %s for address %s",
__FILE__, __PRETTY_FUNCTION__,
nexthop_str, addr_str);
}
++num_ifindex;
break;
default:
/* do nothing */
{
char addr_str[100];
pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str));
zlog_warn("%s %s: found non-ifindex nexthop type=%d for address %s",
__FILE__, __PRETTY_FUNCTION__,
nexthop_type, addr_str);
}
break;
}
}
return num_ifindex;
}
static struct bgp_nexthop_cache *
zlookup_read (void)
{
struct stream *s;
uint16_t length;
u_char marker;
u_char version;
uint16_t command __attribute__((unused));
int nbytes __attribute__((unused));
struct in_addr raddr __attribute__((unused));
uint32_t metric;
int i;
u_char nexthop_num;
struct nexthop *nexthop;
struct bgp_nexthop_cache *bnc;
s = zlookup->ibuf;
stream_reset (s);
/* nbytes not being checked */
nbytes = stream_read (s, zlookup->sock, 2);
length = stream_getw (s);
nbytes = stream_read (s, zlookup->sock, length - 2);
marker = stream_getc (s);
version = stream_getc (s);
if (version != ZSERV_VERSION || marker != ZEBRA_HEADER_MARKER)
{
zlog_err("%s: socket %d version mismatch, marker %d, version %d",
__func__, zlookup->sock, marker, version);
return NULL;
}
/* XXX: not checking command */
command = stream_getw (s);
/* XXX: not doing anything with raddr */
raddr.s_addr = stream_get_ipv4 (s);
metric = stream_getl (s);
nexthop_num = stream_getc (s);
if (nexthop_num)
{
bnc = bnc_new ();
bnc->valid = 1;
bnc->metric = metric;
bnc->nexthop_num = nexthop_num;
for (i = 0; i < nexthop_num; i++)
{
nexthop = XCALLOC (MTYPE_NEXTHOP, sizeof (struct nexthop));
nexthop->type = stream_getc (s);
switch (nexthop->type)
{
case ZEBRA_NEXTHOP_IPV4:
nexthop->gate.ipv4.s_addr = stream_get_ipv4 (s);
break;
case ZEBRA_NEXTHOP_IPV4_IFINDEX:
nexthop->gate.ipv4.s_addr = stream_get_ipv4 (s);
nexthop->ifindex = stream_getl (s);
break;
case ZEBRA_NEXTHOP_IFINDEX:
case ZEBRA_NEXTHOP_IFNAME:
nexthop->ifindex = stream_getl (s);
break;
default:
/* do nothing */
break;
}
bnc_nexthop_add (bnc, nexthop);
}
}
else
return NULL;
return bnc;
}
struct connected *
zebra_interface_address_read (int type, struct stream *s)
{
unsigned int ifindex;
struct interface *ifp;
struct connected *ifc;
struct prefix p, d;
int family;
int plen;
u_char ifc_flags;
memset (&p, 0, sizeof(p));
memset (&d, 0, sizeof(d));
/* Get interface index. */
ifindex = stream_getl (s);
/* Lookup index. */
ifp = if_lookup_by_index (ifindex);
if (ifp == NULL)
{
zlog_warn ("zebra_interface_address_read(%s): "
"Can't find interface by ifindex: %d ",
(type == ZEBRA_INTERFACE_ADDRESS_ADD? "ADD" : "DELETE"),
ifindex);
return NULL;
}
/* Fetch flag. */
ifc_flags = stream_getc (s);
/* Fetch interface address. */
family = p.family = stream_getc (s);
plen = prefix_blen (&p);
stream_get (&p.u.prefix, s, plen);
p.prefixlen = stream_getc (s);
/* Fetch destination address. */
stream_get (&d.u.prefix, s, plen);
d.family = family;
if (type == ZEBRA_INTERFACE_ADDRESS_ADD)
{
/* N.B. NULL destination pointers are encoded as all zeroes */
ifc = connected_add_by_prefix(ifp, &p,(memconstant(&d.u.prefix,0,plen) ?
NULL : &d));
if (ifc != NULL)
{
ifc->flags = ifc_flags;
if (ifc->destination)
ifc->destination->prefixlen = ifc->address->prefixlen;
else if (CHECK_FLAG(ifc->flags, ZEBRA_IFA_PEER))
{
/* carp interfaces on OpenBSD with 0.0.0.0/0 as "peer" */
char buf[BUFSIZ];
prefix2str (ifc->address, buf, sizeof(buf));
zlog_warn("warning: interface %s address %s "
"with peer flag set, but no peer address!",
ifp->name, buf);
UNSET_FLAG(ifc->flags, ZEBRA_IFA_PEER);
}
}
}
else
{
assert (type == ZEBRA_INTERFACE_ADDRESS_DELETE);
ifc = connected_delete_by_prefix(ifp, &p);
}
return ifc;
}
/* Zebra server IPv6 prefix add function. */
static void
zread_ipv6_add (struct zserv *client, u_short length)
{
int i;
struct stream *s;
struct zapi_ipv6 api;
struct in6_addr nexthop;
unsigned long ifindex;
struct prefix_ipv6 p;
s = client->ibuf;
ifindex = 0;
memset (&nexthop, 0, sizeof (struct in6_addr));
/* Type, flags, message. */
api.type = stream_getc (s);
api.flags = stream_getc (s);
api.message = stream_getc (s);
/* IPv4 prefix. */
memset (&p, 0, sizeof (struct prefix_ipv6));
p.family = AF_INET6;
p.prefixlen = stream_getc (s);
stream_get (&p.prefix, s, PSIZE (p.prefixlen));
/* Nexthop, ifindex, distance, metric. */
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP))
{
u_char nexthop_type;
api.nexthop_num = stream_getc (s);
for (i = 0; i < api.nexthop_num; i++)
{
nexthop_type = stream_getc (s);
switch (nexthop_type)
{
case ZEBRA_NEXTHOP_IPV6:
stream_get (&nexthop, s, 16);
break;
case ZEBRA_NEXTHOP_IFINDEX:
ifindex = stream_getl (s);
break;
}
}
}
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE))
api.distance = stream_getc (s);
else
api.distance = 0;
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_METRIC))
api.metric = stream_getl (s);
else
api.metric = 0;
if (IN6_IS_ADDR_UNSPECIFIED (&nexthop))
rib_add_ipv6 (api.type, api.flags, &p, NULL, ifindex, 0, api.metric,
api.distance);
else
rib_add_ipv6 (api.type, api.flags, &p, &nexthop, ifindex, 0, api.metric,
api.distance);
}
/* Zebra server IPv4 prefix delete function. */
static void
zread_ipv4_delete (struct zserv *client, u_short length)
{
int i;
struct stream *s;
struct zapi_ipv4 api;
struct in_addr nexthop;
unsigned long ifindex;
struct prefix_ipv4 p;
u_char nexthop_num;
u_char nexthop_type;
u_char ifname_len;
s = client->ibuf;
ifindex = 0;
nexthop.s_addr = 0;
/* Type, flags, message. */
api.type = stream_getc (s);
api.flags = stream_getc (s);
api.message = stream_getc (s);
/* IPv4 prefix. */
memset (&p, 0, sizeof (struct prefix_ipv4));
p.family = AF_INET;
p.prefixlen = stream_getc (s);
stream_get (&p.prefix, s, PSIZE (p.prefixlen));
/* Nexthop, ifindex, distance, metric. */
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP))
{
nexthop_num = stream_getc (s);
for (i = 0; i < nexthop_num; i++)
{
nexthop_type = stream_getc (s);
switch (nexthop_type)
{
case ZEBRA_NEXTHOP_IFINDEX:
ifindex = stream_getl (s);
break;
case ZEBRA_NEXTHOP_IFNAME:
ifname_len = stream_getc (s);
stream_forward (s, ifname_len);
break;
case ZEBRA_NEXTHOP_IPV4:
nexthop.s_addr = stream_get_ipv4 (s);
break;
case ZEBRA_NEXTHOP_IPV6:
stream_forward (s, IPV6_MAX_BYTELEN);
break;
}
}
}
/* Distance. */
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE))
api.distance = stream_getc (s);
else
api.distance = 0;
/* Metric. */
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_METRIC))
api.metric = stream_getl (s);
else
api.metric = 0;
rib_delete_ipv4 (api.type, api.flags, &p, &nexthop, ifindex,
client->rtm_table);
}
/*
* Parse the ZEBRA_IPV4_ROUTE_ADD sent from client. Update rib and
* add kernel route.
*/
static void
zread_ipv4_add (struct zserv *client, u_short length)
{
int i;
struct rib *rib;
struct prefix_ipv4 p;
u_char message;
struct in_addr nexthop;
u_char nexthop_num;
u_char nexthop_type;
struct stream *s;
unsigned int ifindex;
u_char ifname_len;
/* Get input stream. */
s = client->ibuf;
/* Allocate new rib. */
rib = XMALLOC (MTYPE_RIB, sizeof (struct rib));
memset (rib, 0, sizeof (struct rib));
/* Type, flags, message. */
rib->type = stream_getc (s);
rib->flags = stream_getc (s);
message = stream_getc (s);
rib->uptime = time (NULL);
/* IPv4 prefix. */
memset (&p, 0, sizeof (struct prefix_ipv4));
p.family = AF_INET;
p.prefixlen = stream_getc (s);
stream_get (&p.prefix, s, PSIZE (p.prefixlen));
/* Nexthop parse. */
if (CHECK_FLAG (message, ZAPI_MESSAGE_NEXTHOP))
{
nexthop_num = stream_getc (s);
for (i = 0; i < nexthop_num; i++)
{
nexthop_type = stream_getc (s);
switch (nexthop_type)
{
case ZEBRA_NEXTHOP_IFINDEX:
ifindex = stream_getl (s);
nexthop_ifindex_add (rib, ifindex);
break;
case ZEBRA_NEXTHOP_IFNAME:
ifname_len = stream_getc (s);
stream_forward (s, ifname_len);
break;
case ZEBRA_NEXTHOP_IPV4:
nexthop.s_addr = stream_get_ipv4 (s);
nexthop_ipv4_add (rib, &nexthop);
break;
case ZEBRA_NEXTHOP_IPV6:
stream_forward (s, IPV6_MAX_BYTELEN);
break;
case ZEBRA_NEXTHOP_BLACKHOLE:
nexthop_blackhole_add (rib);
break;
}
}
}
/* Distance. */
if (CHECK_FLAG (message, ZAPI_MESSAGE_DISTANCE))
rib->distance = stream_getc (s);
/* Metric. */
if (CHECK_FLAG (message, ZAPI_MESSAGE_METRIC))
rib->metric = stream_getl (s);
rib_add_ipv4_multipath (&p, rib);
}
