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freebsd-skq/contrib/tcpdump/print-nfs.c
fenner 03014afd03 Merge tcpdump 3.4 
PR:		bin/7877
1998-09-15 19:46:59 +00:00

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34 KiB
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/*
* Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that: (1) source code distributions
* retain the above copyright notice and this paragraph in its entirety, (2)
* distributions including binary code include the above copyright notice and
* this paragraph in its entirety in the documentation or other materials
* provided with the distribution, and (3) all advertising materials mentioning
* features or use of this software display the following acknowledgement:
* ``This product includes software developed by the University of California,
* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
* the University nor the names of its contributors may be used to endorse
* or promote products derived from this software without specific prior
* written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifndef lint
static const char rcsid[] =
"@(#) $Header: print-nfs.c,v 1.65 97/08/17 13:24:22 leres Exp $ (LBL)";
#endif
#include <sys/param.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <net/if.h>
#include <netinet/in.h>
#include <net/ethernet.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip_var.h>
#include <rpc/rpc.h>
#include <ctype.h>
#include <pcap.h>
#include <stdio.h>
#include <string.h>
#include "interface.h"
#include "addrtoname.h"
#include "extract.h" /* must come after interface.h */
#include "nfs.h"
#include "nfsfh.h"
static void nfs_printfh(const u_int32_t *, const int);
static void xid_map_enter(const struct rpc_msg *, const struct ip *);
static int32_t xid_map_find(const struct rpc_msg *, const struct ip *, u_int32_t *,
u_int32_t *);
static void interp_reply(const struct rpc_msg *, u_int32_t, u_int32_t, int);
static const u_int32_t *parse_post_op_attr(const u_int32_t *, int);
static int nfserr; /* true if we error rather than trunc */
/*
* Mapping of old NFS Version 2 RPC numbers to generic numbers.
*/
u_int32_t nfsv3_procid[NFS_NPROCS] = {
NFSPROC_NULL,
NFSPROC_GETATTR,
NFSPROC_SETATTR,
NFSPROC_NOOP,
NFSPROC_LOOKUP,
NFSPROC_READLINK,
NFSPROC_READ,
NFSPROC_NOOP,
NFSPROC_WRITE,
NFSPROC_CREATE,
NFSPROC_REMOVE,
NFSPROC_RENAME,
NFSPROC_LINK,
NFSPROC_SYMLINK,
NFSPROC_MKDIR,
NFSPROC_RMDIR,
NFSPROC_READDIR,
NFSPROC_FSSTAT,
NFSPROC_NOOP,
NFSPROC_NOOP,
NFSPROC_NOOP,
NFSPROC_NOOP,
NFSPROC_NOOP,
NFSPROC_NOOP,
NFSPROC_NOOP,
NFSPROC_NOOP
};
const char *nfsv3_writemodes[NFSV3WRITE_NMODES] = {
"unstable",
"datasync",
"filesync"
};
static struct tok type2str[] = {
{ NFNON, "NON" },
{ NFREG, "REG" },
{ NFDIR, "DIR" },
{ NFBLK, "BLK" },
{ NFCHR, "CHR" },
{ NFLNK, "LNK" },
{ NFFIFO, "FIFO" },
{ 0, NULL }
};
/*
* Print out a 64-bit integer. This appears to be different on each system,
* try to make the best of it. The integer stored as 2 consecutive XDR
* encoded 32-bit integers, to which a pointer is passed.
*
* Assume that a system that has INT64_FORMAT defined, has a 64-bit
* integer datatype and can print it.
*/
#define UNSIGNED 0
#define SIGNED 1
#define HEX 2
#define INT64_FORMAT "%qd"
#define U_INT64_FORMAT "%qu"
#define HEX_INT64_FORMAT "%qx"
int print_int64(const u_int32_t *dp, int how)
{
#ifdef INT64_FORMAT
u_int64_t res;
res = ((u_int64_t)ntohl(dp[0]) << 32) | (u_int64_t)ntohl(dp[1]);
switch (how) {
case SIGNED:
printf(INT64_FORMAT, res);
break;
case UNSIGNED:
printf(U_INT64_FORMAT, res);
break;
case HEX:
printf(HEX_INT64_FORMAT, res);
break;
default:
return (0);
}
#else
/*
* XXX - throw upper 32 bits away.
* Could also go for hex: printf("0x%x%x", dp[0], dp[1]);
*/
if (how == SIGNED)
printf("%ld", (int)dp[1]);
else
printf("%lu", (unsigned int)dp[1]);
#endif
return 1;
}
static const u_int32_t *
parse_sattr3(const u_int32_t *dp, struct nfsv3_sattr *sa3)
{
register const u_int32_t *ep = (u_int32_t *)snapend;
if (dp + 1 > ep)
return (NULL);
if ((sa3->sa_modeset = ntohl(*dp++))) {
if (dp + 1 > ep)
return (NULL);
sa3->sa_mode = ntohl(*dp++);
}
if (dp + 1 > ep)
return (NULL);
if ((sa3->sa_uidset = ntohl(*dp++))) {
if (dp + 1 > ep)
return (NULL);
sa3->sa_uid = ntohl(*dp++);
}
if (dp + 1 > ep)
return (NULL);
if ((sa3->sa_gidset = ntohl(*dp++))) {
if (dp + 1 > ep)
return (NULL);
sa3->sa_gid = ntohl(*dp++);
}
if (dp + 1 > ep)
return (NULL);
if ((sa3->sa_sizeset = ntohl(*dp++))) {
if (dp + 1 > ep)
return (NULL);
sa3->sa_size = ntohl(*dp++);
}
if (dp + 1 > ep)
return (NULL);
if ((sa3->sa_atimetype = ntohl(*dp++)) == NFSV3SATTRTIME_TOCLIENT) {
if (dp + 2 > ep)
return (NULL);
sa3->sa_atime.nfsv3_sec = ntohl(*dp++);
sa3->sa_atime.nfsv3_nsec = ntohl(*dp++);
}
if (dp + 1 > ep)
return (NULL);
if ((sa3->sa_mtimetype = ntohl(*dp++)) == NFSV3SATTRTIME_TOCLIENT) {
if (dp + 2 > ep)
return (NULL);
sa3->sa_mtime.nfsv3_sec = ntohl(*dp++);
sa3->sa_mtime.nfsv3_nsec = ntohl(*dp++);
}
return dp;
}
void
print_sattr3(const struct nfsv3_sattr *sa3, int verbose)
{
if (sa3->sa_modeset)
printf(" mode %o", sa3->sa_mode);
if (sa3->sa_uidset)
printf(" uid %u", sa3->sa_uid);
if (sa3->sa_gidset)
printf(" gid %u", sa3->sa_gid);
if (verbose > 1) {
if (sa3->sa_atimetype == NFSV3SATTRTIME_TOCLIENT)
printf(" atime %u.%06u", sa3->sa_atime.nfsv3_sec,
sa3->sa_atime.nfsv3_nsec);
if (sa3->sa_mtimetype == NFSV3SATTRTIME_TOCLIENT)
printf(" mtime %u.%06u", sa3->sa_mtime.nfsv3_sec,
sa3->sa_mtime.nfsv3_nsec);
}
}
void
nfsreply_print(register const u_char *bp, u_int length,
register const u_char *bp2)
{
register const struct rpc_msg *rp;
register const struct ip *ip;
u_int32_t proc, vers;
nfserr = 0; /* assume no error */
rp = (const struct rpc_msg *)bp;
ip = (const struct ip *)bp2;
if (!nflag)
(void)printf("%s.nfs > %s.%u: reply %s %d",
ipaddr_string(&ip->ip_src),
ipaddr_string(&ip->ip_dst),
(u_int32_t)ntohl(rp->rm_xid),
ntohl(rp->rm_reply.rp_stat) == MSG_ACCEPTED?
"ok":"ERR",
length);
else
(void)printf("%s.%u > %s.%u: reply %s %d",
ipaddr_string(&ip->ip_src),
NFS_PORT,
ipaddr_string(&ip->ip_dst),
(u_int32_t)ntohl(rp->rm_xid),
ntohl(rp->rm_reply.rp_stat) == MSG_ACCEPTED?
"ok":"ERR",
length);
if (xid_map_find(rp, ip, &proc, &vers) >= 0)
interp_reply(rp, proc, vers, length);
}
/*
* Return a pointer to the first file handle in the packet.
* If the packet was truncated, return NULL.
*/
static const u_int32_t *
parsereq(register const struct rpc_msg *rp, register int length)
{
register const u_int32_t *dp;
register u_int len;
/*
* find the start of the req data (if we captured it)
*/
dp = (u_int32_t *)&rp->rm_call.cb_cred;
TCHECK(dp[1]);
len = ntohl(dp[1]);
if (len < length) {
dp += (len + (2 * sizeof(*dp) + 3)) / sizeof(*dp);
TCHECK(dp[1]);
len = ntohl(dp[1]);
if (len < length) {
dp += (len + (2 * sizeof(*dp) + 3)) / sizeof(*dp);
TCHECK2(dp[0], 0);
return (dp);
}
}
trunc:
return (NULL);
}
/*
* Print out an NFS file handle and return a pointer to following word.
* If packet was truncated, return NULL.
*/
static const u_int32_t *
parsefh(register const u_int32_t *dp, int v3)
{
int len;
if (v3) {
TCHECK(dp[0]);
len = (int)ntohl(*dp) / 4;
dp++;
} else
len = NFSX_V2FH / 4;
if (TTEST2(*dp, len * sizeof(*dp))) {
nfs_printfh(dp, len);
return (dp + len);
}
trunc:
return (NULL);
}
/*
* Print out a file name and return pointer to 32-bit word past it.
* If packet was truncated, return NULL.
*/
static const u_int32_t *
parsefn(register const u_int32_t *dp)
{
register u_int32_t len;
register const u_char *cp;
/* Bail if we don't have the string length */
if ((u_char *)dp > snapend - sizeof(*dp))
return (NULL);
/* Fetch string length; convert to host order */
len = *dp++;
NTOHL(len);
cp = (u_char *)dp;
/* Update 32-bit pointer (NFS filenames padded to 32-bit boundaries) */
dp += ((len + 3) & ~3) / sizeof(*dp);
if ((u_char *)dp > snapend)
return (NULL);
/* XXX seems like we should be checking the length */
putchar('"');
(void) fn_printn(cp, len, NULL);
putchar('"');
return (dp);
}
/*
* Print out file handle and file name.
* Return pointer to 32-bit word past file name.
* If packet was truncated (or there was some other error), return NULL.
*/
static const u_int32_t *
parsefhn(register const u_int32_t *dp, int v3)
{
dp = parsefh(dp, v3);
if (dp == NULL)
return (NULL);
putchar(' ');
return (parsefn(dp));
}
void
nfsreq_print(register const u_char *bp, u_int length,
register const u_char *bp2)
{
register const struct rpc_msg *rp;
register const struct ip *ip;
register const u_int32_t *dp;
nfstype type;
int proc, v3;
struct nfsv3_sattr sa3;
nfserr = 0; /* assume no error */
rp = (const struct rpc_msg *)bp;
ip = (const struct ip *)bp2;
if (!nflag)
(void)printf("%s.%u > %s.nfs: %d",
ipaddr_string(&ip->ip_src),
(u_int32_t)ntohl(rp->rm_xid),
ipaddr_string(&ip->ip_dst),
length);
else
(void)printf("%s.%u > %s.%u: %d",
ipaddr_string(&ip->ip_src),
(u_int32_t)ntohl(rp->rm_xid),
ipaddr_string(&ip->ip_dst),
NFS_PORT,
length);
xid_map_enter(rp, ip); /* record proc number for later on */
v3 = (ntohl(rp->rm_call.cb_vers) == NFS_VER3);
proc = ntohl(rp->rm_call.cb_proc);
if (!v3 && proc < NFS_NPROCS)
proc = nfsv3_procid[proc];
switch (proc) {
case NFSPROC_NOOP:
printf(" nop");
return;
case NFSPROC_NULL:
printf(" null");
return;
case NFSPROC_GETATTR:
printf(" getattr");
if ((dp = parsereq(rp, length)) != NULL && parsefh(dp, v3) != NULL)
return;
break;
case NFSPROC_SETATTR:
printf(" setattr");
if ((dp = parsereq(rp, length)) != NULL && parsefh(dp, v3) != NULL)
return;
break;
case NFSPROC_LOOKUP:
printf(" lookup");
if ((dp = parsereq(rp, length)) != NULL && parsefhn(dp, v3) != NULL)
return;
break;
case NFSPROC_ACCESS:
printf(" access");
if ((dp = parsereq(rp, length)) != NULL &&
(dp = parsefh(dp, v3)) != NULL) {
TCHECK(*dp);
printf(" %04lx", ntohl(dp[0]));
return;
}
break;
case NFSPROC_READLINK:
printf(" readlink");
if ((dp = parsereq(rp, length)) != NULL && parsefh(dp, v3) != NULL)
return;
break;
case NFSPROC_READ:
printf(" read");
if ((dp = parsereq(rp, length)) != NULL &&
(dp = parsefh(dp, v3)) != NULL) {
if (v3) {
TCHECK2(*dp, 3 * sizeof(*dp));
printf(" %lu bytes @ ", ntohl(dp[2]));
print_int64(dp, UNSIGNED);
} else {
TCHECK2(*dp, 2 * sizeof(*dp));
printf(" %lu bytes @ %lu",
ntohl(dp[1]), ntohl(dp[0]));
}
return;
}
break;
case NFSPROC_WRITE:
printf(" write");
if ((dp = parsereq(rp, length)) != NULL &&
(dp = parsefh(dp, v3)) != NULL) {
if (v3) {
TCHECK2(*dp, 3 * sizeof(*dp));
printf(" %lu bytes @ ", ntohl(dp[4]));
print_int64(dp, UNSIGNED);
if (vflag) {
dp += 3;
TCHECK2(*dp, sizeof(*dp));
printf(" <%s>",
nfsv3_writemodes[ntohl(*dp)]);
}
} else {
TCHECK2(*dp, 4 * sizeof(*dp));
printf(" %lu (%lu) bytes @ %lu (%lu)",
ntohl(dp[3]), ntohl(dp[2]),
ntohl(dp[1]), ntohl(dp[0]));
}
return;
}
break;
case NFSPROC_CREATE:
printf(" create");
if ((dp = parsereq(rp, length)) != NULL && parsefhn(dp, v3) != NULL)
return;
break;
case NFSPROC_MKDIR:
printf(" mkdir");
if ((dp = parsereq(rp, length)) != NULL && parsefhn(dp, v3) != NULL)
return;
break;
case NFSPROC_SYMLINK:
printf(" symlink");
if ((dp = parsereq(rp, length)) != NULL &&
(dp = parsefhn(dp, v3)) != NULL) {
fputs(" -> ", stdout);
if (v3 && (dp = parse_sattr3(dp, &sa3)) == NULL)
break;
if (parsefn(dp) == NULL)
break;
if (v3 && vflag)
print_sattr3(&sa3, vflag);
return;
}
break;
case NFSPROC_MKNOD:
printf(" mknod");
if ((dp = parsereq(rp, length)) != NULL &&
(dp = parsefhn(dp, v3)) != NULL) {
if (dp + 1 > (u_int32_t *)snapend)
break;
type = (nfstype)ntohl(*dp++);
if ((dp = parse_sattr3(dp, &sa3)) == NULL)
break;
printf(" %s", tok2str(type2str, "unk-ft %d", type));
if (vflag && (type == NFCHR || type == NFBLK)) {
if (dp + 2 > (u_int32_t *)snapend)
break;
printf(" %lu/%lu", ntohl(dp[0]), ntohl(dp[1]));
dp += 2;
}
if (vflag)
print_sattr3(&sa3, vflag);
return;
}
break;
case NFSPROC_REMOVE:
printf(" remove");
if ((dp = parsereq(rp, length)) != NULL && parsefhn(dp, v3) != NULL)
return;
break;
case NFSPROC_RMDIR:
printf(" rmdir");
if ((dp = parsereq(rp, length)) != NULL && parsefhn(dp, v3) != NULL)
return;
break;
case NFSPROC_RENAME:
printf(" rename");
if ((dp = parsereq(rp, length)) != NULL &&
(dp = parsefhn(dp, v3)) != NULL) {
fputs(" ->", stdout);
if (parsefhn(dp, v3) != NULL)
return;
}
break;
case NFSPROC_LINK:
printf(" link");
if ((dp = parsereq(rp, length)) != NULL &&
(dp = parsefh(dp, v3)) != NULL) {
fputs(" ->", stdout);
if (parsefhn(dp, v3) != NULL)
return;
}
break;
case NFSPROC_READDIR:
printf(" readdir");
if ((dp = parsereq(rp, length)) != NULL &&
(dp = parsefh(dp, v3)) != NULL) {
if (v3) {
TCHECK2(*dp, 20);
/*
* We shouldn't really try to interpret the
* offset cookie here.
*/
printf(" %lu bytes @ ", ntohl(dp[4]));
print_int64(dp, SIGNED);
if (vflag)
printf(" verf %08x%08x", dp[2],
dp[3]);
} else {
TCHECK2(*dp, 2 * sizeof(*dp));
/*
* Print the offset as signed, since -1 is
* common, but offsets > 2^31 aren't.
*/
printf(" %lu bytes @ %ld", ntohl(dp[1]),
ntohl(dp[0]));
}
return;
}
break;
case NFSPROC_READDIRPLUS:
printf(" readdirplus");
if ((dp = parsereq(rp, length)) != NULL &&
(dp = parsefh(dp, v3)) != NULL) {
TCHECK2(*dp, 20);
/*
* We don't try to interpret the offset
* cookie here.
*/
printf(" %lu bytes @ ", ntohl(dp[4]));
print_int64(dp, SIGNED);
if (vflag)
printf(" max %lu verf %08x%08x",
ntohl(dp[5]), dp[2], dp[3]);
return;
}
break;
case NFSPROC_FSSTAT:
printf(" fsstat");
if ((dp = parsereq(rp, length)) != NULL && parsefh(dp, v3) != NULL)
return;
break;
case NFSPROC_FSINFO:
printf(" fsinfo");
break;
case NFSPROC_PATHCONF:
printf(" pathconf");
break;
case NFSPROC_COMMIT:
printf(" commit");
if ((dp = parsereq(rp, length)) != NULL &&
(dp = parsefh(dp, v3)) != NULL) {
printf(" %lu bytes @ ", ntohl(dp[2]));
print_int64(dp, UNSIGNED);
return;
}
break;
default:
printf(" proc-%lu", ntohl(rp->rm_call.cb_proc));
return;
}
trunc:
if (!nfserr)
fputs(" [|nfs]", stdout);
}
/*
* Print out an NFS file handle.
* We assume packet was not truncated before the end of the
* file handle pointed to by dp.
*
* Note: new version (using portable file-handle parser) doesn't produce
* generation number. It probably could be made to do that, with some
* additional hacking on the parser code.
*/
static void
nfs_printfh(register const u_int32_t *dp, const int len)
{
my_fsid fsid;
ino_t ino;
char *sfsname = NULL;
Parse_fh((caddr_t *)dp, len, &fsid, &ino, NULL, &sfsname, 0);
if (sfsname) {
/* file system ID is ASCII, not numeric, for this server OS */
static char temp[NFSX_V3FHMAX+1];
/* Make sure string is null-terminated */
strncpy(temp, sfsname, NFSX_V3FHMAX);
/* Remove trailing spaces */
sfsname = strchr(temp, ' ');
if (sfsname)
*sfsname = 0;
(void)printf(" fh %s/%u", temp, (u_int32_t)ino);
} else {
(void)printf(" fh %u,%u/%u",
fsid.Fsid_dev.Major, fsid.Fsid_dev.Minor, (u_int32_t)ino);
}
}
/*
* Maintain a small cache of recent client.XID.server/proc pairs, to allow
* us to match up replies with requests and thus to know how to parse
* the reply.
*/
struct xid_map_entry {
u_int32_t xid; /* transaction ID (net order) */
struct in_addr client; /* client IP address (net order) */
struct in_addr server; /* server IP address (net order) */
u_int32_t proc; /* call proc number (host order) */
u_int32_t vers; /* program version (host order) */
};
/*
* Map entries are kept in an array that we manage as a ring;
* new entries are always added at the tail of the ring. Initially,
* all the entries are zero and hence don't match anything.
*/
#define XIDMAPSIZE 64
struct xid_map_entry xid_map[XIDMAPSIZE];
int xid_map_next = 0;
int xid_map_hint = 0;
static void
xid_map_enter(const struct rpc_msg *rp, const struct ip *ip)
{
struct xid_map_entry *xmep;
xmep = &xid_map[xid_map_next];
if (++xid_map_next >= XIDMAPSIZE)
xid_map_next = 0;
xmep->xid = rp->rm_xid;
xmep->client = ip->ip_src;
xmep->server = ip->ip_dst;
xmep->proc = ntohl(rp->rm_call.cb_proc);
xmep->vers = ntohl(rp->rm_call.cb_vers);
}
/*
* Returns 0 and puts NFSPROC_xxx in proc return and
* version in vers return, or returns -1 on failure
*/
static int
xid_map_find(const struct rpc_msg *rp, const struct ip *ip, u_int32_t *proc,
u_int32_t *vers)
{
int i;
struct xid_map_entry *xmep;
u_int32_t xid = rp->rm_xid;
u_int32_t clip = ip->ip_dst.s_addr;
u_int32_t sip = ip->ip_src.s_addr;
/* Start searching from where we last left off */
i = xid_map_hint;
do {
xmep = &xid_map[i];
if (xmep->xid == xid && xmep->client.s_addr == clip &&
xmep->server.s_addr == sip) {
/* match */
xid_map_hint = i;
*proc = xmep->proc;
*vers = xmep->vers;
return 0;
}
if (++i >= XIDMAPSIZE)
i = 0;
} while (i != xid_map_hint);
/* search failed */
return (0);
}
/*
* Routines for parsing reply packets
*/
/*
* Return a pointer to the beginning of the actual results.
* If the packet was truncated, return NULL.
*/
static const u_int32_t *
parserep(register const struct rpc_msg *rp, register int length)
{
register const u_int32_t *dp;
int len;
enum accept_stat astat;
/*
* Portability note:
* Here we find the address of the ar_verf credentials.
* Originally, this calculation was
* dp = (u_int32_t *)&rp->rm_reply.rp_acpt.ar_verf
* On the wire, the rp_acpt field starts immediately after
* the (32 bit) rp_stat field. However, rp_acpt (which is a
* "struct accepted_reply") contains a "struct opaque_auth",
* whose internal representation contains a pointer, so on a
* 64-bit machine the compiler inserts 32 bits of padding
* before rp->rm_reply.rp_acpt.ar_verf. So, we cannot use
* the internal representation to parse the on-the-wire
* representation. Instead, we skip past the rp_stat field,
* which is an "enum" and so occupies one 32-bit word.
*/
dp = ((const u_int32_t *)&rp->rm_reply) + 1;
TCHECK2(dp[0], 1);
len = ntohl(dp[1]);
if (len >= length)
return (NULL);
/*
* skip past the ar_verf credentials.
*/
dp += (len + (2*sizeof(u_int32_t) + 3)) / sizeof(u_int32_t);
TCHECK2(dp[0], 0);
/*
* now we can check the ar_stat field
*/
astat = ntohl(*(enum accept_stat *)dp);
switch (astat) {
case SUCCESS:
break;
case PROG_UNAVAIL:
printf(" PROG_UNAVAIL");
nfserr = 1; /* suppress trunc string */
return (NULL);
case PROG_MISMATCH:
printf(" PROG_MISMATCH");
nfserr = 1; /* suppress trunc string */
return (NULL);
case PROC_UNAVAIL:
printf(" PROC_UNAVAIL");
nfserr = 1; /* suppress trunc string */
return (NULL);
case GARBAGE_ARGS:
printf(" GARBAGE_ARGS");
nfserr = 1; /* suppress trunc string */
return (NULL);
case SYSTEM_ERR:
printf(" SYSTEM_ERR");
nfserr = 1; /* suppress trunc string */
return (NULL);
default:
printf(" ar_stat %d", astat);
nfserr = 1; /* suppress trunc string */
return (NULL);
}
/* successful return */
if ((sizeof(astat) + ((u_char *)dp)) < snapend)
return ((u_int32_t *) (sizeof(astat) + ((char *)dp)));
trunc:
return (NULL);
}
static const u_int32_t *
parsestatus(const u_int32_t *dp, int *er)
{
register int errnum;
TCHECK(dp[0]);
errnum = ntohl(dp[0]);
if (er)
*er = errnum;
if (errnum != 0) {
if (!qflag)
printf(" ERROR: %s", pcap_strerror(errnum));
nfserr = 1;
return (NULL);
}
return (dp + 1);
trunc:
return (NULL);
}
static const u_int32_t *
parsefattr(const u_int32_t *dp, int verbose, int v3)
{
const struct nfs_fattr *fap;
fap = (const struct nfs_fattr *)dp;
TCHECK(fap->fa_gid);
if (verbose) {
printf(" %s %lo ids %ld/%ld",
tok2str(type2str, "unk-ft %d ", ntohl(fap->fa_type)),
ntohl(fap->fa_mode), ntohl(fap->fa_uid),
ntohl(fap->fa_gid));
if (v3) {
TCHECK(fap->fa3_size);
printf(" sz ");
print_int64((u_int32_t *)&fap->fa3_size, UNSIGNED);
putchar(' ');
} else {
TCHECK(fap->fa2_size);
printf(" sz %ld ", ntohl(fap->fa2_size));
}
}
/* print lots more stuff */
if (verbose > 1) {
if (v3) {
TCHECK(fap->fa3_ctime);
printf("nlink %ld rdev %ld/%ld ",
ntohl(fap->fa_nlink),
ntohl(fap->fa3_rdev.specdata1),
ntohl(fap->fa3_rdev.specdata2));
printf("fsid ");
print_int64((u_int32_t *)&fap->fa2_fsid, HEX);
printf(" nodeid ");
print_int64((u_int32_t *)&fap->fa2_fileid, HEX);
printf(" a/m/ctime %lu.%06lu ",
ntohl(fap->fa3_atime.nfsv3_sec),
ntohl(fap->fa3_atime.nfsv3_nsec));
printf("%lu.%06lu ",
ntohl(fap->fa3_mtime.nfsv3_sec),
ntohl(fap->fa3_mtime.nfsv3_nsec));
printf("%lu.%06lu ",
ntohl(fap->fa3_ctime.nfsv3_sec),
ntohl(fap->fa3_ctime.nfsv3_nsec));
} else {
TCHECK(fap->fa2_ctime);
printf("nlink %ld rdev %lx fsid %lx nodeid %lx a/m/ctime ",
ntohl(fap->fa_nlink), ntohl(fap->fa2_rdev),
ntohl(fap->fa2_fsid), ntohl(fap->fa2_fileid));
printf("%lu.%06lu ",
ntohl(fap->fa2_atime.nfsv2_sec),
ntohl(fap->fa2_atime.nfsv2_usec));
printf("%lu.%06lu ",
ntohl(fap->fa2_mtime.nfsv2_sec),
ntohl(fap->fa2_mtime.nfsv2_usec));
printf("%lu.%06lu ",
ntohl(fap->fa2_ctime.nfsv2_sec),
ntohl(fap->fa2_ctime.nfsv2_usec));
}
}
return ((const u_int32_t *)((unsigned char *)dp +
(v3 ? NFSX_V3FATTR : NFSX_V2FATTR)));
trunc:
return (NULL);
}
static int
parseattrstat(const u_int32_t *dp, int verbose, int v3)
{
int er;
dp = parsestatus(dp, &er);
if (dp == NULL || er)
return (0);
return (parsefattr(dp, verbose, v3) != NULL);
}
static int
parsediropres(const u_int32_t *dp)
{
int er;
dp = parsestatus(dp, &er);
if (dp == NULL || er)
return (0);
dp = parsefh(dp, 0);
if (dp == NULL)
return (0);
return (parsefattr(dp, vflag, 0) != NULL);
}
static int
parselinkres(const u_int32_t *dp, int v3)
{
int er;
dp = parsestatus(dp, &er);
if (dp == NULL || er)
return(0);
if (v3 && ((dp = parse_post_op_attr(dp, vflag)) != NULL))
return (0);
putchar(' ');
return (parsefn(dp) != NULL);
}
static int
parsestatfs(const u_int32_t *dp, int v3)
{
const struct nfs_statfs *sfsp;
int er;
dp = parsestatus(dp, &er);
if (dp == NULL || (!v3 && er))
return(0);
if (qflag)
return(1);
if (v3) {
if (vflag)
printf(" POST:");
if ((dp = parse_post_op_attr(dp, vflag)) == NULL)
return (0);
}
TCHECK2(dp, (v3 ? NFSX_V3STATFS : NFSX_V2STATFS));
sfsp = (const struct nfs_statfs *)dp;
if (v3) {
printf(" tbytes ");
print_int64((u_int32_t *)&sfsp->sf_tbytes, UNSIGNED);
printf(" fbytes ");
print_int64((u_int32_t *)&sfsp->sf_fbytes, UNSIGNED);
printf(" abytes ");
print_int64((u_int32_t *)&sfsp->sf_abytes, UNSIGNED);
if (vflag) {
printf(" tfiles ");
print_int64((u_int32_t *)&sfsp->sf_tfiles, UNSIGNED);
printf(" ffiles ");
print_int64((u_int32_t *)&sfsp->sf_ffiles, UNSIGNED);
printf(" afiles ");
print_int64((u_int32_t *)&sfsp->sf_afiles, UNSIGNED);
printf(" invar %lu", ntohl(sfsp->sf_invarsec));
}
} else {
printf(" tsize %ld bsize %ld blocks %ld bfree %ld bavail %ld",
ntohl(sfsp->sf_tsize), ntohl(sfsp->sf_bsize),
ntohl(sfsp->sf_blocks), ntohl(sfsp->sf_bfree),
ntohl(sfsp->sf_bavail));
}
return (1);
trunc:
return (0);
}
static int
parserddires(const u_int32_t *dp)
{
int er;
dp = parsestatus(dp, &er);
if (dp == NULL || er)
return (0);
if (qflag)
return (1);
TCHECK(dp[2]);
printf(" offset %lx size %ld ", ntohl(dp[0]), ntohl(dp[1]));
if (dp[2] != 0)
printf("eof");
return (1);
trunc:
return (0);
}
static const u_int32_t *
parse_wcc_attr(const u_int32_t *dp)
{
printf(" sz ");
print_int64(dp, UNSIGNED);
printf(" mtime %lu.%06lu ctime %lu.%06lu", ntohl(dp[2]), ntohl(dp[3]),
ntohl(dp[4]), ntohl(dp[5]));
return (dp + 6);
}
/*
* Pre operation attributes. Print only if vflag > 1.
*/
static const u_int32_t *
parse_pre_op_attr(const u_int32_t *dp, int verbose)
{
TCHECK(dp[0]);
if (!ntohl(dp[0]))
return (dp + 1);
dp++;
TCHECK2(dp, 24);
if (verbose > 1) {
return parse_wcc_attr(dp);
} else {
/* If not verbose enough, just skip over wcc_attr */
return (dp + 6);
}
trunc:
return (NULL);
}
/*
* Post operation attributes are printed if vflag >= 1
*/
static const u_int32_t *
parse_post_op_attr(const u_int32_t *dp, int verbose)
{
TCHECK(dp[0]);
if (!ntohl(dp[0]))
return (dp + 1);
dp++;
if (verbose) {
return parsefattr(dp, verbose, 1);
} else
return (dp + (NFSX_V3FATTR / sizeof (u_int32_t)));
trunc:
return (NULL);
}
static const u_int32_t *
parse_wcc_data(const u_int32_t *dp, int verbose)
{
if (verbose > 1)
printf(" PRE:");
if ((dp = parse_pre_op_attr(dp, verbose)) == NULL)
return (NULL);
if (verbose)
printf(" POST:");
return parse_post_op_attr(dp, verbose);
}
static const u_int32_t *
parsecreateopres(const u_int32_t *dp, int verbose)
{
int er;
if ((dp = parsestatus(dp, &er)) == NULL)
return (NULL);
if (er)
dp = parse_wcc_data(dp, verbose);
else {
TCHECK(dp[0]);
if (!ntohl(dp[0]))
return (dp + 1);
dp++;
if ((dp = parsefh(dp, 1)) == NULL)
return (NULL);
if (verbose) {
if ((dp = parse_post_op_attr(dp, verbose)) == NULL)
return (NULL);
if (vflag > 1) {
printf("dir attr:");
dp = parse_wcc_data(dp, verbose);
}
}
}
return (dp);
trunc:
return (NULL);
}
static int
parsewccres(const u_int32_t *dp, int verbose)
{
int er;
if ((dp = parsestatus(dp, &er)) == NULL)
return (0);
return parse_wcc_data(dp, verbose) != NULL;
}
static const u_int32_t *
parsev3rddirres(const u_int32_t *dp, int verbose)
{
int er;
if ((dp = parsestatus(dp, &er)) == NULL)
return (NULL);
if (vflag)
printf(" POST:");
if ((dp = parse_post_op_attr(dp, verbose)) == NULL)
return (NULL);
if (er)
return dp;
if (vflag) {
TCHECK(dp[1]);
printf(" verf %08x%08x", dp[0], dp[1]);
dp += 2;
}
return dp;
trunc:
return (NULL);
}
static int
parsefsinfo(const u_int32_t *dp)
{
struct nfsv3_fsinfo *sfp;
int er;
if ((dp = parsestatus(dp, &er)) == NULL)
return (0);
if (vflag)
printf(" POST:");
if ((dp = parse_post_op_attr(dp, vflag)) == NULL)
return (0);
if (er)
return (1);
sfp = (struct nfsv3_fsinfo *)dp;
TCHECK(*sfp);
printf(" rtmax %lu rtpref %lu wtmax %lu wtpref %lu dtpref %lu",
ntohl(sfp->fs_rtmax), ntohl(sfp->fs_rtpref),
ntohl(sfp->fs_wtmax), ntohl(sfp->fs_wtpref),
ntohl(sfp->fs_dtpref));
if (vflag) {
printf(" rtmult %lu wtmult %lu maxfsz ",
ntohl(sfp->fs_rtmult), ntohl(sfp->fs_wtmult));
print_int64((u_int32_t *)&sfp->fs_maxfilesize, UNSIGNED);
printf(" delta %lu.%06lu ", ntohl(sfp->fs_timedelta.nfsv3_sec),
ntohl(sfp->fs_timedelta.nfsv3_nsec));
}
return (1);
trunc:
return (0);
}
static int
parsepathconf(const u_int32_t *dp)
{
int er;
struct nfsv3_pathconf *spp;
if ((dp = parsestatus(dp, &er)) == NULL)
return (0);
if (vflag)
printf(" POST:");
if ((dp = parse_post_op_attr(dp, vflag)) == NULL)
return (0);
if (er)
return (1);
spp = (struct nfsv3_pathconf *)dp;
TCHECK(*spp);
printf(" linkmax %lu namemax %lu %s %s %s %s",
ntohl(spp->pc_linkmax),
ntohl(spp->pc_namemax),
ntohl(spp->pc_notrunc) ? "notrunc" : "",
ntohl(spp->pc_chownrestricted) ? "chownres" : "",
ntohl(spp->pc_caseinsensitive) ? "igncase" : "",
ntohl(spp->pc_casepreserving) ? "keepcase" : "");
return (1);
trunc:
return (0);
}
static void
interp_reply(const struct rpc_msg *rp, u_int32_t proc, u_int32_t vers, int length)
{
register const u_int32_t *dp;
register int v3;
int er;
v3 = (vers == NFS_VER3);
if (!v3 && proc < NFS_NPROCS)
proc = nfsv3_procid[proc];
switch (proc) {
case NFSPROC_NOOP:
printf(" nop");
return;
case NFSPROC_NULL:
printf(" null");
return;
case NFSPROC_GETATTR:
printf(" getattr");
dp = parserep(rp, length);
if (dp != NULL && parseattrstat(dp, !qflag, v3) != 0)
return;
break;
case NFSPROC_SETATTR:
printf(" setattr");
if ((dp = parserep(rp, length)) == NULL)
return;
if (v3) {
if (parsewccres(dp, vflag) != 0)
return;
} else {
if (parseattrstat(dp, !qflag, 0) != 0)
return;
}
break;
case NFSPROC_LOOKUP:
printf(" lookup");
if ((dp = parserep(rp, length)) == NULL)
break;
if (v3) {
if ((dp = parsestatus(dp, &er)) == NULL)
break;
if (er) {
if (vflag > 1) {
printf(" post dattr:");
dp = parse_post_op_attr(dp, vflag);
}
} else {
if ((dp = parsefh(dp, v3)) == NULL)
break;
if (((dp = parse_post_op_attr(dp, vflag)) != NULL) &&
(vflag > 1)) {
printf(" post dattr:");
dp = parse_post_op_attr(dp, vflag);
}
}
if (dp != NULL)
return;
} else {
if (parsediropres(dp) != 0)
return;
}
break;
case NFSPROC_ACCESS:
printf(" access");
dp = parserep(rp, length);
if ((dp = parsestatus(dp, &er)) == NULL)
break;
if (vflag)
printf(" attr:");
if ((dp = parse_post_op_attr(dp, vflag)) == NULL)
break;
if (!er)
printf(" c %04lx", ntohl(dp[0]));
return;
case NFSPROC_READLINK:
printf(" readlink");
dp = parserep(rp, length);
if (dp != NULL && parselinkres(dp, v3) != 0)
return;
break;
case NFSPROC_READ:
printf(" read");
if ((dp = parserep(rp, length)) == NULL)
break;
if (v3) {
if ((dp = parsestatus(dp, &er)) == NULL)
break;
if ((dp = parse_post_op_attr(dp, vflag)) == NULL)
break;
if (er)
return;
if (vflag) {
TCHECK2(*dp, 8);
printf("%lu bytes", ntohl(dp[0]));
if (ntohl(dp[1]))
printf(" EOF");
}
return;
} else {
if (parseattrstat(dp, vflag, 0) != 0)
return;
}
break;
case NFSPROC_WRITE:
printf(" write");
if ((dp = parserep(rp, length)) == NULL)
break;
if (v3) {
if ((dp = parsestatus(dp, &er)) == NULL)
break;
if ((dp = parse_wcc_data(dp, vflag)) == NULL)
break;
if (er)
return;
if (vflag) {
TCHECK2(*dp, 4);
printf("%lu bytes", ntohl(dp[0]));
if (vflag > 1) {
TCHECK2(*dp, 4);
printf(" <%s>",
nfsv3_writemodes[ntohl(dp[1])]);
}
return;
}
} else {
if (parseattrstat(dp, vflag, v3) != 0)
return;
}
break;
case NFSPROC_CREATE:
printf(" create");
if ((dp = parserep(rp, length)) == NULL)
break;
if (v3) {
if (parsecreateopres(dp, vflag) != NULL)
return;
} else {
if (parsediropres(dp) != 0)
return;
}
break;
case NFSPROC_MKDIR:
printf(" mkdir");
if ((dp = parserep(rp, length)) == NULL)
break;
if (v3) {
if (parsecreateopres(dp, vflag) != NULL)
return;
} else {
if (parsediropres(dp) != 0)
return;
}
break;
case NFSPROC_SYMLINK:
printf(" symlink");
if ((dp = parserep(rp, length)) == NULL)
break;
if (v3) {
if (parsecreateopres(dp, vflag) != NULL)
return;
} else {
if (parsestatus(dp, &er) != NULL)
return;
}
break;
case NFSPROC_MKNOD:
printf(" mknod");
if ((dp = parserep(rp, length)) == NULL)
break;
if (parsecreateopres(dp, vflag) != NULL)
return;
break;
case NFSPROC_REMOVE:
printf(" remove");
if ((dp = parserep(rp, length)) == NULL)
break;
if (v3) {
if (parsewccres(dp, vflag) != 0)
return;
} else {
if (parsestatus(dp, &er) != NULL)
return;
}
break;
case NFSPROC_RMDIR:
printf(" rmdir");
if ((dp = parserep(rp, length)) == NULL)
break;
if (v3) {
if (parsewccres(dp, vflag) != 0)
return;
} else {
if (parsestatus(dp, &er) != NULL)
return;
}
break;
case NFSPROC_RENAME:
printf(" rename");
if ((dp = parserep(rp, length)) == NULL)
break;
if (v3) {
if ((dp = parsestatus(dp, &er)) == NULL)
break;
if (vflag) {
printf(" from:");
if ((dp = parse_wcc_data(dp, vflag)) == NULL)
break;
printf(" to:");
if ((dp = parse_wcc_data(dp, vflag)) == NULL)
break;
}
return;
} else {
if (parsestatus(dp, &er) != NULL)
return;
}
break;
case NFSPROC_LINK:
printf(" link");
if ((dp = parserep(rp, length)) == NULL)
break;
if (v3) {
if ((dp = parsestatus(dp, &er)) == NULL)
break;
if (vflag) {
printf(" file POST:");
if ((dp = parse_post_op_attr(dp, vflag)) == NULL)
break;
printf(" dir:");
if ((dp = parse_wcc_data(dp, vflag)) == NULL)
break;
return;
}
} else {
if (parsestatus(dp, &er) != NULL)
return;
}
break;
case NFSPROC_READDIR:
printf(" readdir");
if ((dp = parserep(rp, length)) == NULL)
break;
if (v3) {
if (parsev3rddirres(dp, vflag) != NULL)
return;
} else {
if (parserddires(dp) != 0)
return;
}
break;
case NFSPROC_READDIRPLUS:
printf(" readdirplus");
if ((dp = parserep(rp, length)) == NULL)
break;
if (parsev3rddirres(dp, vflag) != NULL)
return;
break;
case NFSPROC_FSSTAT:
printf(" fsstat");
dp = parserep(rp, length);
if (dp != NULL && parsestatfs(dp, v3) != NULL)
return;
break;
case NFSPROC_FSINFO:
printf(" fsinfo");
dp = parserep(rp, length);
if (dp != NULL && parsefsinfo(dp) != NULL)
return;
break;
case NFSPROC_PATHCONF:
printf(" pathconf");
dp = parserep(rp, length);
if (dp != NULL && parsepathconf(dp) != 0)
return;
break;
case NFSPROC_COMMIT:
printf(" commit");
dp = parserep(rp, length);
if (dp != NULL && parsewccres(dp, vflag) != 0)
return;
break;
default:
printf(" proc-%u", proc);
return;
}
trunc:
if (!nfserr)
fputs(" [|nfs]", stdout);
}
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