/*

 *  Interface MIB architecture support

 *

 * $Id$

 */

#include <net-snmp/net-snmp-config.h>

#include <net-snmp/net-snmp-includes.h>

#include "mibII/mibII_common.h"

#include <net-snmp/agent/net-snmp-agent-includes.h>

#include <net-snmp/data_access/interface.h>

#include <net-snmp/data_access/route.h>

#include <net-snmp/data_access/ipaddress.h>

#include <inet/ip.h>

#include <inet/mib2.h>

#include "ip-forward-mib/data_access/route_ioctl.h"

#include "ip-forward-mib/inetCidrRouteTable/inetCidrRouteTable_constants.h"

#include "if-mib/data_access/interface_ioctl.h"

#include "route_private.h"

static int _load_v4(netsnmp_container *container, u_long *count);

static int _load_v6(netsnmp_container *container, u_long *count);

/** arch specific load

 * @internal

 *

 * @retval  0 success

 * @retval -1 no container specified

 * @retval -2 could not open data file

 */

int

netsnmp_access_route_container_arch_load(netsnmp_container* container,

                                         u_int load_flags)

{

    u_long          count = 0;

    int             rc;

    DEBUGMSGTL(("access:route:container",

                "route_container_arch_load (flags %x)\n", load_flags));

    if (NULL == container) {

        snmp_log(LOG_ERR, "no container specified/found for access_route\n");

        return -1;

    }

    rc = _load_v4(container, &count);

#ifdef NETSNMP_ENABLE_IPV6

    if((0 != rc) || (load_flags & NETSNMP_ACCESS_ROUTE_LOAD_IPV4_ONLY))

        return rc;

    /*

     * load ipv6. ipv6 module might not be loaded,

     * so ignore -2 err (file not found)

     */

    rc = _load_v6(container, &count);

    if (-2 == rc)

        rc = 0;

#endif

    return rc;

}

/*

 * create a new entry

 */

int

netsnmp_arch_route_create(netsnmp_route_entry *entry)

{

    if (NULL == entry)

        return -1;

    if (4 != entry->rt_dest_len) {

        DEBUGMSGT(("access:route:create", "only ipv4 supported\n"));

        return -2;

    }

    /* return _netsnmp_ioctl_route_set_v4(entry); */

    return -2;

}

/*

 * create a new entry

 */

int

netsnmp_arch_route_delete(netsnmp_route_entry *entry)

{

    if (NULL == entry)

        return -1;

    if (4 != entry->rt_dest_len) {

        DEBUGMSGT(("access:route:create", "only ipv4 supported\n"));

        return -2;

    }

    /* return _netsnmp_ioctl_route_delete_v4(entry); */

    return -2;

}

static int

IP_Cmp_Route(void *addr, void *ep)

{

    mib2_ipRouteEntry_t *Ep = ep, *Addr = addr;

    if ((Ep->ipRouteDest == Addr->ipRouteDest) &&

        (Ep->ipRouteNextHop == Addr->ipRouteNextHop) &&

        (Ep->ipRouteType == Addr->ipRouteType) &&

        (Ep->ipRouteProto == Addr->ipRouteProto) &&

        (Ep->ipRouteMask == Addr->ipRouteMask) &&

        (Ep->ipRouteInfo.re_max_frag == Addr->ipRouteInfo.re_max_frag) &&

        (Ep->ipRouteInfo.re_rtt == Addr->ipRouteInfo.re_rtt) &&

        (Ep->ipRouteInfo.re_ref == Addr->ipRouteInfo.re_ref) &&

        (Ep->ipRouteInfo.re_frag_flag == Addr->ipRouteInfo.re_frag_flag) &&

        (Ep->ipRouteInfo.re_src_addr == Addr->ipRouteInfo.re_src_addr) &&

        (Ep->ipRouteInfo.re_ire_type == Addr->ipRouteInfo.re_ire_type) &&

        (Ep->ipRouteInfo.re_obpkt == Addr->ipRouteInfo.re_obpkt) &&

        (Ep->ipRouteInfo.re_ibpkt == Addr->ipRouteInfo.re_ibpkt)

        )

        return (0);

    else

        return (1);             /* Not found */

}

static int

IP6_Cmp_Route(void *addr, void *ep)

{

    mib2_ipv6RouteEntry_t *Ep = ep, *Addr = addr;

    if ((memcmp(&Ep->ipv6RouteDest, &Addr->ipv6RouteDest, 16) == 0) &&

        (memcmp(&Ep->ipv6RouteNextHop, &Addr->ipv6RouteNextHop, 16) == 0) &&

        (Ep->ipv6RouteType == Addr->ipv6RouteType) &&

        (Ep->ipv6RouteInfo.re_max_frag == Addr->ipv6RouteInfo.re_max_frag) &&

        (Ep->ipv6RouteInfo.re_rtt == Addr->ipv6RouteInfo.re_rtt) &&

        (Ep->ipv6RouteInfo.re_ref == Addr->ipv6RouteInfo.re_ref) &&

        (Ep->ipv6RouteInfo.re_frag_flag == Addr->ipv6RouteInfo.re_frag_flag) &&

        (memcmp(&Ep->ipv6RouteInfo.re_src_addr, &Addr->ipv6RouteInfo.re_src_addr, 16) == 0) &&

        (Ep->ipv6RouteInfo.re_ire_type == Addr->ipv6RouteInfo.re_ire_type) &&

        (Ep->ipv6RouteInfo.re_obpkt == Addr->ipv6RouteInfo.re_obpkt) &&

        (Ep->ipv6RouteInfo.re_ibpkt == Addr->ipv6RouteInfo.re_ibpkt)

        )

        return (0);

    else

        return (1);             /* Not found */

}

static int _load_v4(netsnmp_container *container, u_long *count)

{

    netsnmp_route_entry *entry;

    mib2_ipRouteEntry_t Curentry, Nextentry;

    int req_type;

    for (Nextentry.ipRouteDest = (u_long) -2, req_type = GET_FIRST;;

             Nextentry = Curentry, req_type = GET_NEXT) {

	if (getMibstat(MIB_IP_ROUTE, &Curentry, sizeof(mib2_ipRouteEntry_t),

		       req_type, &IP_Cmp_Route, &Nextentry) != 0)

	    break;

#ifdef HAVE_DEFINED_IRE_CACHE

	if (Curentry.ipRouteInfo.re_ire_type & IRE_CACHE)

	    continue;

#endif /* HAVE_DEFINED_IRE_CACHE */

	if (Curentry.ipRouteInfo.re_ire_type & IRE_BROADCAST)

	    continue;

	entry = netsnmp_access_route_entry_create();

	Curentry.ipRouteIfIndex.o_bytes[Curentry.ipRouteIfIndex.o_length] = '\0';

	entry->if_index = netsnmp_access_interface_index_find(

                Curentry.ipRouteIfIndex.o_bytes);

	entry->ns_rt_index = entry->if_index;

	entry->rt_dest_type = INETADDRESSTYPE_IPV4;

	entry->rt_dest_len = 4;

	memcpy(entry->rt_dest, &Curentry.ipRouteDest, 4);

	memcpy(&entry->rt_mask, &Curentry.ipRouteMask, 4);

	entry->rt_nexthop_type = INETADDRESSTYPE_IPV4;

	entry->rt_nexthop_len = 4;

	memcpy(entry->rt_nexthop, &Curentry.ipRouteNextHop, 4);

	entry->rt_pfx_len = netsnmp_ipaddress_ipv4_prefix_len(Curentry.ipRouteMask);

	entry->rt_type = Curentry.ipRouteType;

	entry->rt_proto = Curentry.ipRouteProto;

	entry->rt_age = Curentry.ipRouteAge;

	entry->rt_metric1 = Curentry.ipRouteMetric1;

	entry->rt_metric2 = Curentry.ipRouteMetric2;

	entry->rt_metric3 = Curentry.ipRouteMetric3;

	entry->rt_metric4 = Curentry.ipRouteMetric4;

	/*

	 * insert into container

	 */

	if (CONTAINER_INSERT(container, entry) < 0) {

	    DEBUGMSGTL(("access:route:container", "error with route_entry: insert into container failed.\n"));

	    netsnmp_access_route_entry_free(entry);

	    continue;

	}

	*count++;

    }

    return 0;

}

static int _load_v6(netsnmp_container *container, u_long *count)

{

    netsnmp_route_entry *entry;

    mib2_ipv6RouteEntry_t Curentry, Nextentry;

    int req_type;

    memset(&Nextentry, 0, sizeof(Nextentry));

    for (req_type = GET_FIRST;;

             Nextentry = Curentry, req_type = GET_NEXT) {

	if (getMibstat(MIB_IP6_ROUTE, &Curentry, sizeof(mib2_ipv6RouteEntry_t),

		       req_type, &IP6_Cmp_Route, &Nextentry) != 0)

	    break;

#ifdef HAVE_DEFINED_IRE_CACHE

	if (Curentry.ipv6RouteInfo.re_ire_type & IRE_CACHE)

	    continue;

#endif /* HAVE_DEFINED_IRE_CACHE */

	if (Curentry.ipv6RouteInfo.re_ire_type & IRE_BROADCAST)

	    continue;

	entry = netsnmp_access_route_entry_create();

	Curentry.ipv6RouteIfIndex.o_bytes[Curentry.ipv6RouteIfIndex.o_length] = '\0';

	entry->if_index = netsnmp_access_interface_index_find(

                Curentry.ipv6RouteIfIndex.o_bytes);

	entry->ns_rt_index = entry->if_index;

	entry->rt_dest_type = INETADDRESSTYPE_IPV6;

	entry->rt_dest_len = 16;

	memcpy(entry->rt_dest, &Curentry.ipv6RouteDest, 16);

	entry->rt_nexthop_type = INETADDRESSTYPE_IPV6;

	entry->rt_nexthop_len = 16;

	memcpy(entry->rt_nexthop, &Curentry.ipv6RouteNextHop, 16);

	entry->rt_pfx_len = Curentry.ipv6RoutePfxLength;

	entry->rt_type = Curentry.ipv6RouteType;

	entry->rt_proto = Curentry.ipv6RouteProtocol;

	entry->rt_age = Curentry.ipv6RouteAge;

	entry->rt_policy = calloc(3, sizeof(oid));

	entry->rt_policy_len = 3;

	entry->rt_policy[2] = Curentry.ipv6RoutePolicy;

	entry->rt_metric1 = Curentry.ipv6RouteMetric;

	entry->rt_metric2 = Curentry.ipv6RouteWeight;

	/*

	 * insert into container

	 */

	if (CONTAINER_INSERT(container, entry) < 0) {

	    DEBUGMSGTL(("access:route:container", "error with route_entry: insert into container failed.\n"));

	    netsnmp_access_route_entry_free(entry);

	    continue;

	}

	*count++;

    }

    return 0;

}