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/*
* Copyright (c) 2016 Fabien Siron <fabien.siron@epita.fr>
* Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
* Copyright (c) 2016-2017 The strace developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "defs.h"
#include "netlink.h"
#include "netlink_route.h"
#include <linux/rtnetlink.h>
#include "xlat/nl_route_types.h"
static void
decode_family(struct tcb *const tcp, const uint8_t family,
const kernel_ulong_t addr, const unsigned int len)
{
tprints("{family=");
printxval(addrfams, family, "AF_???");
if (len > sizeof(family)) {
tprints(", ");
printstr_ex(tcp, addr + sizeof(family),
len - sizeof(family), QUOTE_FORCE_HEX);
}
tprints("}");
}
typedef DECL_NETLINK_ROUTE_DECODER((*netlink_route_decoder_t));
static const netlink_route_decoder_t route_decoders[] = {
[RTM_DELLINK - RTM_BASE] = decode_ifinfomsg,
[RTM_GETLINK - RTM_BASE] = decode_ifinfomsg,
[RTM_NEWLINK - RTM_BASE] = decode_ifinfomsg,
[RTM_SETLINK - RTM_BASE] = decode_ifinfomsg,
[RTM_DELADDR - RTM_BASE] = decode_ifaddrmsg,
[RTM_GETADDR - RTM_BASE] = decode_ifaddrmsg,
[RTM_GETANYCAST - RTM_BASE] = decode_ifaddrmsg,
[RTM_GETMULTICAST - RTM_BASE] = decode_ifaddrmsg,
[RTM_NEWADDR - RTM_BASE] = decode_ifaddrmsg,
[RTM_DELROUTE - RTM_BASE] = decode_rtmsg,
[RTM_GETROUTE - RTM_BASE] = decode_rtmsg,
[RTM_NEWROUTE - RTM_BASE] = decode_rtmsg,
[RTM_DELRULE - RTM_BASE] = decode_fib_rule_hdr,
[RTM_GETRULE - RTM_BASE] = decode_fib_rule_hdr,
[RTM_NEWRULE - RTM_BASE] = decode_fib_rule_hdr,
[RTM_DELNEIGH - RTM_BASE] = decode_ndmsg,
[RTM_GETNEIGH - RTM_BASE] = decode_rtm_getneigh,
[RTM_NEWNEIGH - RTM_BASE] = decode_ndmsg,
[RTM_GETNEIGHTBL - RTM_BASE] = decode_ndtmsg,
[RTM_NEWNEIGHTBL - RTM_BASE] = decode_ndtmsg,
[RTM_SETNEIGHTBL - RTM_BASE] = decode_ndtmsg,
[RTM_DELQDISC - RTM_BASE] = decode_tcmsg,
[RTM_GETQDISC - RTM_BASE] = decode_tcmsg,
[RTM_NEWQDISC - RTM_BASE] = decode_tcmsg,
[RTM_DELTCLASS - RTM_BASE] = decode_tcmsg,
[RTM_GETTCLASS - RTM_BASE] = decode_tcmsg,
[RTM_NEWTCLASS - RTM_BASE] = decode_tcmsg,
[RTM_DELTFILTER - RTM_BASE] = decode_tcmsg,
[RTM_GETTFILTER - RTM_BASE] = decode_tcmsg,
[RTM_NEWTFILTER - RTM_BASE] = decode_tcmsg,
[RTM_DELACTION - RTM_BASE] = decode_tcamsg,
[RTM_GETACTION - RTM_BASE] = decode_tcamsg,
[RTM_NEWACTION - RTM_BASE] = decode_tcamsg,
#ifdef HAVE_STRUCT_IFADDRLBLMSG
[RTM_DELADDRLABEL - RTM_BASE] = decode_ifaddrlblmsg,
[RTM_GETADDRLABEL - RTM_BASE] = decode_ifaddrlblmsg,
[RTM_NEWADDRLABEL - RTM_BASE] = decode_ifaddrlblmsg,
#endif
#ifdef HAVE_STRUCT_DCBMSG
[RTM_GETDCB - RTM_BASE] = decode_dcbmsg,
[RTM_SETDCB - RTM_BASE] = decode_dcbmsg,
#endif
#ifdef HAVE_STRUCT_NETCONFMSG
[RTM_DELNETCONF - RTM_BASE] = decode_netconfmsg,
[RTM_GETNETCONF - RTM_BASE] = decode_netconfmsg,
[RTM_NEWNETCONF - RTM_BASE] = decode_netconfmsg,
#endif
#ifdef HAVE_STRUCT_BR_PORT_MSG
[RTM_DELMDB - RTM_BASE] = decode_br_port_msg,
[RTM_GETMDB - RTM_BASE] = decode_br_port_msg,
[RTM_NEWMDB - RTM_BASE] = decode_br_port_msg,
#endif
[RTM_DELNSID - RTM_BASE] = decode_rtgenmsg,
[RTM_GETNSID - RTM_BASE] = decode_rtgenmsg,
[RTM_NEWNSID - RTM_BASE] = decode_rtgenmsg
};
bool
decode_netlink_route(struct tcb *const tcp,
const struct nlmsghdr *const nlmsghdr,
const kernel_ulong_t addr,
const unsigned int len)
{
uint8_t family;
if (nlmsghdr->nlmsg_type == NLMSG_DONE)
return false;
if (!umove_or_printaddr(tcp, addr, &family)) {
const unsigned int index = nlmsghdr->nlmsg_type - RTM_BASE;
if (index < ARRAY_SIZE(route_decoders)
&& route_decoders[index]) {
route_decoders[index](tcp, nlmsghdr, family, addr, len);
} else {
decode_family(tcp, family, addr, len);
}
}
return true;
}
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