431 lines
12 KiB
C
431 lines
12 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2016 Fabien Siron <fabien.siron@epita.fr>
|
||
|
|
* Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
|
||
|
|
* Copyright (c) 2017-2018 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_sock_diag.h"
|
||
|
|
#include "nlattr.h"
|
||
|
|
#include "print_fields.h"
|
||
|
|
|
||
|
|
#include <arpa/inet.h>
|
||
|
|
|
||
|
|
#include <linux/sock_diag.h>
|
||
|
|
#include <linux/inet_diag.h>
|
||
|
|
|
||
|
|
#include "xlat/inet_diag_attrs.h"
|
||
|
|
#include "xlat/inet_diag_bytecodes.h"
|
||
|
|
#include "xlat/inet_diag_extended_flags.h"
|
||
|
|
#include "xlat/inet_diag_req_attrs.h"
|
||
|
|
|
||
|
|
#include "xlat/tcp_states.h"
|
||
|
|
#include "xlat/tcp_state_flags.h"
|
||
|
|
|
||
|
|
void
|
||
|
|
print_inet_diag_sockid(const struct inet_diag_sockid *id, const uint8_t family)
|
||
|
|
{
|
||
|
|
PRINT_FIELD_NET_PORT("{", *id, idiag_sport);
|
||
|
|
PRINT_FIELD_NET_PORT(", ", *id, idiag_dport);
|
||
|
|
PRINT_FIELD_INET_ADDR(", ", *id, idiag_src, family);
|
||
|
|
PRINT_FIELD_INET_ADDR(", ", *id, idiag_dst, family);
|
||
|
|
PRINT_FIELD_IFINDEX(", ", *id, idiag_if);
|
||
|
|
PRINT_FIELD_COOKIE(", ", *id, idiag_cookie);
|
||
|
|
tprints("}");
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
decode_inet_diag_hostcond(struct tcb *const tcp,
|
||
|
|
const kernel_ulong_t addr,
|
||
|
|
const unsigned int len)
|
||
|
|
{
|
||
|
|
struct inet_diag_hostcond cond;
|
||
|
|
|
||
|
|
if (len < sizeof(cond)) {
|
||
|
|
printstr_ex(tcp, addr, len, QUOTE_FORCE_HEX);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
if (umove_or_printaddr(tcp, addr, &cond))
|
||
|
|
return;
|
||
|
|
|
||
|
|
PRINT_FIELD_XVAL("{", cond, family, addrfams, "AF_???");
|
||
|
|
PRINT_FIELD_U(", ", cond, prefix_len);
|
||
|
|
PRINT_FIELD_U(", ", cond, port);
|
||
|
|
|
||
|
|
if (len > sizeof(cond)) {
|
||
|
|
tprints(", ");
|
||
|
|
decode_inet_addr(tcp, addr + sizeof(cond),
|
||
|
|
len - sizeof(cond), cond.family, "addr");
|
||
|
|
}
|
||
|
|
tprints("}");
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
print_inet_diag_bc_op(const struct inet_diag_bc_op *const op)
|
||
|
|
{
|
||
|
|
PRINT_FIELD_XVAL("{", *op, code, inet_diag_bytecodes,
|
||
|
|
"INET_DIAG_BC_???");
|
||
|
|
PRINT_FIELD_U(", ", *op, yes);
|
||
|
|
PRINT_FIELD_U(", ", *op, no);
|
||
|
|
tprints("}");
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
decode_inet_diag_markcond(struct tcb *const tcp,
|
||
|
|
const kernel_ulong_t addr,
|
||
|
|
const unsigned int len)
|
||
|
|
{
|
||
|
|
struct inet_diag_markcond markcond;
|
||
|
|
|
||
|
|
if (len < sizeof(markcond))
|
||
|
|
printstr_ex(tcp, addr, len, QUOTE_FORCE_HEX);
|
||
|
|
else if (!umove_or_printaddr(tcp, addr, &markcond)) {
|
||
|
|
PRINT_FIELD_U("{", markcond, mark);
|
||
|
|
PRINT_FIELD_U(", ", markcond, mask);
|
||
|
|
tprints("}");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
decode_bytecode_data(struct tcb *const tcp,
|
||
|
|
const kernel_ulong_t addr,
|
||
|
|
const unsigned int len,
|
||
|
|
const unsigned char code)
|
||
|
|
{
|
||
|
|
switch (code) {
|
||
|
|
case INET_DIAG_BC_S_COND:
|
||
|
|
case INET_DIAG_BC_D_COND:
|
||
|
|
decode_inet_diag_hostcond(tcp, addr, len);
|
||
|
|
break;
|
||
|
|
case INET_DIAG_BC_DEV_COND: {
|
||
|
|
uint32_t ifindex;
|
||
|
|
|
||
|
|
if (len < sizeof(ifindex))
|
||
|
|
printstr_ex(tcp, addr, len, QUOTE_FORCE_HEX);
|
||
|
|
else if (!umove_or_printaddr(tcp, addr, &ifindex))
|
||
|
|
print_ifindex(ifindex);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case INET_DIAG_BC_S_GE:
|
||
|
|
case INET_DIAG_BC_S_LE:
|
||
|
|
case INET_DIAG_BC_D_GE:
|
||
|
|
case INET_DIAG_BC_D_LE: {
|
||
|
|
struct inet_diag_bc_op op;
|
||
|
|
|
||
|
|
if (len < sizeof(op))
|
||
|
|
printstr_ex(tcp, addr, len, QUOTE_FORCE_HEX);
|
||
|
|
else if (!umove_or_printaddr(tcp, addr, &op))
|
||
|
|
print_inet_diag_bc_op(&op);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case INET_DIAG_BC_MARK_COND:
|
||
|
|
decode_inet_diag_markcond(tcp, addr, len);
|
||
|
|
break;
|
||
|
|
case INET_DIAG_BC_AUTO:
|
||
|
|
case INET_DIAG_BC_JMP:
|
||
|
|
case INET_DIAG_BC_NOP:
|
||
|
|
default:
|
||
|
|
printstr_ex(tcp, addr, len, QUOTE_FORCE_HEX);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static bool
|
||
|
|
decode_inet_diag_bc_op(struct tcb *const tcp,
|
||
|
|
const kernel_ulong_t addr,
|
||
|
|
const unsigned int len,
|
||
|
|
const void *const opaque_data)
|
||
|
|
{
|
||
|
|
struct inet_diag_bc_op op;
|
||
|
|
|
||
|
|
if (len < sizeof(op))
|
||
|
|
return false;
|
||
|
|
if (umove_or_printaddr(tcp, addr, &op))
|
||
|
|
return true;
|
||
|
|
|
||
|
|
if (len > sizeof(op))
|
||
|
|
tprints("{");
|
||
|
|
|
||
|
|
print_inet_diag_bc_op(&op);
|
||
|
|
|
||
|
|
if (len > sizeof(op)) {
|
||
|
|
tprints(", ");
|
||
|
|
decode_bytecode_data(tcp, addr + sizeof(op),
|
||
|
|
len - sizeof(op), op.code);
|
||
|
|
tprints("}");
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const nla_decoder_t inet_diag_req_nla_decoders[] = {
|
||
|
|
[INET_DIAG_REQ_BYTECODE] = decode_inet_diag_bc_op
|
||
|
|
};
|
||
|
|
|
||
|
|
static void
|
||
|
|
decode_inet_diag_req_compat(struct tcb *const tcp,
|
||
|
|
const struct nlmsghdr *const nlmsghdr,
|
||
|
|
const uint8_t family,
|
||
|
|
const kernel_ulong_t addr,
|
||
|
|
const unsigned int len)
|
||
|
|
{
|
||
|
|
struct inet_diag_req req = { .idiag_family = family };
|
||
|
|
size_t offset = sizeof(req.idiag_family);
|
||
|
|
bool decode_nla = false;
|
||
|
|
|
||
|
|
PRINT_FIELD_XVAL("{", req, idiag_family, addrfams, "AF_???");
|
||
|
|
tprints(", ");
|
||
|
|
if (len >= sizeof(req)) {
|
||
|
|
if (!umoven_or_printaddr(tcp, addr + offset,
|
||
|
|
sizeof(req) - offset,
|
||
|
|
(char *) &req + offset)) {
|
||
|
|
PRINT_FIELD_U("", req, idiag_src_len);
|
||
|
|
PRINT_FIELD_U(", ", req, idiag_dst_len);
|
||
|
|
PRINT_FIELD_FLAGS(", ", req, idiag_ext,
|
||
|
|
inet_diag_extended_flags,
|
||
|
|
"1<<INET_DIAG_\?\?\?-1");
|
||
|
|
PRINT_FIELD_INET_DIAG_SOCKID(", ", req, id,
|
||
|
|
req.idiag_family);
|
||
|
|
PRINT_FIELD_FLAGS(", ", req, idiag_states,
|
||
|
|
tcp_state_flags, "1<<TCP_???");
|
||
|
|
PRINT_FIELD_U(", ", req, idiag_dbs);
|
||
|
|
decode_nla = true;
|
||
|
|
}
|
||
|
|
} else
|
||
|
|
tprints("...");
|
||
|
|
tprints("}");
|
||
|
|
|
||
|
|
offset = NLMSG_ALIGN(sizeof(req));
|
||
|
|
if (decode_nla && len > offset) {
|
||
|
|
tprints(", ");
|
||
|
|
decode_nlattr(tcp, addr + offset, len - offset,
|
||
|
|
inet_diag_req_attrs, "INET_DIAG_REQ_???",
|
||
|
|
inet_diag_req_nla_decoders,
|
||
|
|
ARRAY_SIZE(inet_diag_req_nla_decoders), NULL);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
decode_inet_diag_req_v2(struct tcb *const tcp,
|
||
|
|
const struct nlmsghdr *const nlmsghdr,
|
||
|
|
const uint8_t family,
|
||
|
|
const kernel_ulong_t addr,
|
||
|
|
const unsigned int len)
|
||
|
|
{
|
||
|
|
struct inet_diag_req_v2 req = { .sdiag_family = family };
|
||
|
|
size_t offset = sizeof(req.sdiag_family);
|
||
|
|
bool decode_nla = false;
|
||
|
|
|
||
|
|
PRINT_FIELD_XVAL("{", req, sdiag_family, addrfams, "AF_???");
|
||
|
|
tprints(", ");
|
||
|
|
if (len >= sizeof(req)) {
|
||
|
|
if (!umoven_or_printaddr(tcp, addr + offset,
|
||
|
|
sizeof(req) - offset,
|
||
|
|
(char *) &req + offset)) {
|
||
|
|
PRINT_FIELD_XVAL("", req, sdiag_protocol,
|
||
|
|
inet_protocols, "IPPROTO_???");
|
||
|
|
PRINT_FIELD_FLAGS(", ", req, idiag_ext,
|
||
|
|
inet_diag_extended_flags,
|
||
|
|
"1<<INET_DIAG_\?\?\?-1");
|
||
|
|
PRINT_FIELD_FLAGS(", ", req, idiag_states,
|
||
|
|
tcp_state_flags, "1<<TCP_???");
|
||
|
|
PRINT_FIELD_INET_DIAG_SOCKID(", ", req, id,
|
||
|
|
req.sdiag_family);
|
||
|
|
decode_nla = true;
|
||
|
|
}
|
||
|
|
} else
|
||
|
|
tprints("...");
|
||
|
|
tprints("}");
|
||
|
|
|
||
|
|
offset = NLMSG_ALIGN(sizeof(req));
|
||
|
|
if (decode_nla && len > offset) {
|
||
|
|
tprints(", ");
|
||
|
|
decode_nlattr(tcp, addr + offset, len - offset,
|
||
|
|
inet_diag_req_attrs, "INET_DIAG_REQ_???",
|
||
|
|
inet_diag_req_nla_decoders,
|
||
|
|
ARRAY_SIZE(inet_diag_req_nla_decoders), NULL);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
DECL_NETLINK_DIAG_DECODER(decode_inet_diag_req)
|
||
|
|
{
|
||
|
|
if (nlmsghdr->nlmsg_type == TCPDIAG_GETSOCK
|
||
|
|
|| nlmsghdr->nlmsg_type == DCCPDIAG_GETSOCK)
|
||
|
|
decode_inet_diag_req_compat(tcp, nlmsghdr, family, addr, len);
|
||
|
|
else
|
||
|
|
decode_inet_diag_req_v2(tcp, nlmsghdr, family, addr, len);
|
||
|
|
}
|
||
|
|
|
||
|
|
static bool
|
||
|
|
decode_inet_diag_meminfo(struct tcb *const tcp,
|
||
|
|
const kernel_ulong_t addr,
|
||
|
|
const unsigned int len,
|
||
|
|
const void *const opaque_data)
|
||
|
|
{
|
||
|
|
struct inet_diag_meminfo minfo;
|
||
|
|
|
||
|
|
if (len < sizeof(minfo))
|
||
|
|
return false;
|
||
|
|
if (umove_or_printaddr(tcp, addr, &minfo))
|
||
|
|
return true;
|
||
|
|
|
||
|
|
PRINT_FIELD_U("{", minfo, idiag_rmem);
|
||
|
|
PRINT_FIELD_U(", ", minfo, idiag_wmem);
|
||
|
|
PRINT_FIELD_U(", ", minfo, idiag_fmem);
|
||
|
|
PRINT_FIELD_U(", ", minfo, idiag_tmem);
|
||
|
|
tprints("}");
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
static bool
|
||
|
|
decode_tcpvegas_info(struct tcb *const tcp,
|
||
|
|
const kernel_ulong_t addr,
|
||
|
|
const unsigned int len,
|
||
|
|
const void *const opaque_data)
|
||
|
|
{
|
||
|
|
struct tcpvegas_info vegas;
|
||
|
|
|
||
|
|
if (len < sizeof(vegas))
|
||
|
|
return false;
|
||
|
|
if (umove_or_printaddr(tcp, addr, &vegas))
|
||
|
|
return true;
|
||
|
|
|
||
|
|
PRINT_FIELD_U("{", vegas, tcpv_enabled);
|
||
|
|
PRINT_FIELD_U(", ", vegas, tcpv_rttcnt);
|
||
|
|
PRINT_FIELD_U(", ", vegas, tcpv_rtt);
|
||
|
|
PRINT_FIELD_U(", ", vegas, tcpv_minrtt);
|
||
|
|
tprints("}");
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
static bool
|
||
|
|
decode_tcp_dctcp_info(struct tcb *const tcp,
|
||
|
|
const kernel_ulong_t addr,
|
||
|
|
const unsigned int len,
|
||
|
|
const void *const opaque_data)
|
||
|
|
{
|
||
|
|
struct tcp_dctcp_info dctcp;
|
||
|
|
|
||
|
|
if (len < sizeof(dctcp))
|
||
|
|
return false;
|
||
|
|
if (umove_or_printaddr(tcp, addr, &dctcp))
|
||
|
|
return true;
|
||
|
|
|
||
|
|
PRINT_FIELD_U("{", dctcp, dctcp_enabled);
|
||
|
|
PRINT_FIELD_U(", ", dctcp, dctcp_ce_state);
|
||
|
|
PRINT_FIELD_U(", ", dctcp, dctcp_alpha);
|
||
|
|
PRINT_FIELD_U(", ", dctcp, dctcp_ab_ecn);
|
||
|
|
PRINT_FIELD_U(", ", dctcp, dctcp_ab_tot);
|
||
|
|
tprints("}");
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
static bool
|
||
|
|
decode_tcp_bbr_info(struct tcb *const tcp,
|
||
|
|
const kernel_ulong_t addr,
|
||
|
|
const unsigned int len,
|
||
|
|
const void *const opaque_data)
|
||
|
|
{
|
||
|
|
struct tcp_bbr_info bbr;
|
||
|
|
|
||
|
|
if (len < sizeof(bbr))
|
||
|
|
return false;
|
||
|
|
if (umove_or_printaddr(tcp, addr, &bbr))
|
||
|
|
return true;
|
||
|
|
|
||
|
|
PRINT_FIELD_X("{", bbr, bbr_bw_lo);
|
||
|
|
PRINT_FIELD_X(", ", bbr, bbr_bw_hi);
|
||
|
|
PRINT_FIELD_U(", ", bbr, bbr_min_rtt);
|
||
|
|
PRINT_FIELD_U(", ", bbr, bbr_pacing_gain);
|
||
|
|
PRINT_FIELD_U(", ", bbr, bbr_cwnd_gain);
|
||
|
|
tprints("}");
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const nla_decoder_t inet_diag_msg_nla_decoders[] = {
|
||
|
|
[INET_DIAG_MEMINFO] = decode_inet_diag_meminfo,
|
||
|
|
[INET_DIAG_INFO] = NULL, /* unimplemented */
|
||
|
|
[INET_DIAG_VEGASINFO] = decode_tcpvegas_info,
|
||
|
|
[INET_DIAG_CONG] = decode_nla_str,
|
||
|
|
[INET_DIAG_TOS] = decode_nla_u8,
|
||
|
|
[INET_DIAG_TCLASS] = decode_nla_u8,
|
||
|
|
[INET_DIAG_SKMEMINFO] = decode_nla_meminfo,
|
||
|
|
[INET_DIAG_SHUTDOWN] = decode_nla_u8,
|
||
|
|
[INET_DIAG_DCTCPINFO] = decode_tcp_dctcp_info,
|
||
|
|
[INET_DIAG_PROTOCOL] = decode_nla_u8,
|
||
|
|
[INET_DIAG_SKV6ONLY] = decode_nla_u8,
|
||
|
|
[INET_DIAG_LOCALS] = NULL, /* unimplemented */
|
||
|
|
[INET_DIAG_PEERS] = NULL, /* unimplemented */
|
||
|
|
[INET_DIAG_PAD] = NULL,
|
||
|
|
[INET_DIAG_MARK] = decode_nla_u32,
|
||
|
|
[INET_DIAG_BBRINFO] = decode_tcp_bbr_info,
|
||
|
|
[INET_DIAG_CLASS_ID] = decode_nla_u32
|
||
|
|
};
|
||
|
|
|
||
|
|
DECL_NETLINK_DIAG_DECODER(decode_inet_diag_msg)
|
||
|
|
{
|
||
|
|
struct inet_diag_msg msg = { .idiag_family = family };
|
||
|
|
size_t offset = sizeof(msg.idiag_family);
|
||
|
|
bool decode_nla = false;
|
||
|
|
|
||
|
|
PRINT_FIELD_XVAL("{", msg, idiag_family, addrfams, "AF_???");
|
||
|
|
tprints(", ");
|
||
|
|
if (len >= sizeof(msg)) {
|
||
|
|
if (!umoven_or_printaddr(tcp, addr + offset,
|
||
|
|
sizeof(msg) - offset,
|
||
|
|
(char *) &msg + offset)) {
|
||
|
|
PRINT_FIELD_XVAL("", msg, idiag_state,
|
||
|
|
tcp_states, "TCP_???");
|
||
|
|
PRINT_FIELD_U(", ", msg, idiag_timer);
|
||
|
|
PRINT_FIELD_U(", ", msg, idiag_retrans);
|
||
|
|
PRINT_FIELD_INET_DIAG_SOCKID(", ", msg, id,
|
||
|
|
msg.idiag_family);
|
||
|
|
PRINT_FIELD_U(", ", msg, idiag_expires);
|
||
|
|
PRINT_FIELD_U(", ", msg, idiag_rqueue);
|
||
|
|
PRINT_FIELD_U(", ", msg, idiag_wqueue);
|
||
|
|
PRINT_FIELD_U(", ", msg, idiag_uid);
|
||
|
|
PRINT_FIELD_U(", ", msg, idiag_inode);
|
||
|
|
decode_nla = true;
|
||
|
|
}
|
||
|
|
} else
|
||
|
|
tprints("...");
|
||
|
|
tprints("}");
|
||
|
|
|
||
|
|
offset = NLMSG_ALIGN(sizeof(msg));
|
||
|
|
if (decode_nla && len > offset) {
|
||
|
|
tprints(", ");
|
||
|
|
decode_nlattr(tcp, addr + offset, len - offset,
|
||
|
|
inet_diag_attrs, "INET_DIAG_???",
|
||
|
|
inet_diag_msg_nla_decoders,
|
||
|
|
ARRAY_SIZE(inet_diag_msg_nla_decoders), NULL);
|
||
|
|
}
|
||
|
|
}
|