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- /*
- * Copyright (c) 1990, 1991, 1992 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 char rcsid[] =
- "@(#) $Header: print-nfs.c,v 1.24 92/01/31 12:27:46 mccanne Exp $ (LBL)";
- #endif
-
- #include <stdio.h>
- #include <sys/param.h>
- #include <sys/types.h>
- #include <sys/socket.h>
- #include <net/if.h>
- #include <netinet/in.h>
- #include <netinet/if_ether.h>
- #include <netinet/in_systm.h>
- #include <netinet/ip.h>
- #include <netinet/ip_var.h>
-
- #include <sys/time.h>
- #include <errno.h>
- #include <rpc/types.h>
- #include <rpc/auth.h>
- #include <rpc/auth_unix.h>
- #include <rpc/svc.h>
- #include <rpc/xdr.h>
- #include <rpc/rpc_msg.h>
-
- #include <ctype.h>
-
- #include "interface.h"
- /* These must come after interface.h for BSD. */
- #if BSD >= 199006
- #include <sys/ucred.h>
- #include <nfs/nfsv2.h>
- #endif
- #include <nfs/nfs.h>
-
- #include "addrtoname.h"
- #include "extract.h"
-
- static void nfs_printfh();
- static void nfs_printfn();
-
- #if BYTE_ORDER == LITTLE_ENDIAN
- /*
- * Byte swap an array of n words.
- * Assume input is word-aligned.
- * Check that buffer is bounded by "snapend".
- */
- static void
- bswap(bp, n)
- register u_long *bp;
- register u_int n;
- {
- register int nwords = ((char *)snapend - (char *)bp) / sizeof(*bp);
-
- if (nwords > n)
- nwords = n;
- for (; --nwords >= 0; ++bp)
- *bp = ntohl(*bp);
- }
- #endif
-
- void
- nfsreply_print(rp, length, ip)
- register struct rpc_msg *rp;
- int length;
- register struct ip *ip;
- {
- #if BYTE_ORDER == LITTLE_ENDIAN
- bswap((u_long *)rp, sizeof(*rp) / sizeof(u_long));
- #endif
- if (!nflag)
- (void)printf("%s.nfs > %s.%x: reply %s %d",
- ipaddr_string(&ip->ip_src),
- ipaddr_string(&ip->ip_dst),
- rp->rm_xid,
- rp->rm_reply.rp_stat == MSG_ACCEPTED? "ok":"ERR",
- length);
- else
- (void)printf("%s.%x > %s.%x: reply %s %d",
- ipaddr_string(&ip->ip_src),
- NFS_PORT,
- ipaddr_string(&ip->ip_dst),
- rp->rm_xid,
- rp->rm_reply.rp_stat == MSG_ACCEPTED? "ok":"ERR",
- length);
- }
-
- /*
- * Return a pointer to the first file handle in the packet.
- * If the packet was truncated, return 0.
- */
- static u_long *
- parsereq(rp, length)
- register struct rpc_msg *rp;
- register int length;
- {
- register u_long *dp = (u_long *)&rp->rm_call.cb_cred;
- register u_long *ep = (u_long *)snapend;
-
- /*
- * find the start of the req data (if we captured it)
- * note that dp[1] was already byte swapped by bswap()
- */
- if (dp < ep && dp[1] < length) {
- dp += (dp[1] + (2*sizeof(u_long) + 3)) / sizeof(u_long);
- if ((dp < ep) && (dp[1] < length)) {
- dp += (dp[1] + (2*sizeof(u_long) + 3)) /
- sizeof(u_long);
- if (dp < ep)
- return (dp);
- }
- }
- return (0);
- }
-
- /*
- * Print out an NFS file handle and return a pointer to following word.
- * If packet was truncated, return 0.
- */
- static u_long *
- parsefh(dp)
- register u_long *dp;
- {
- if (dp + 8 <= (u_long *)snapend) {
- nfs_printfh(dp);
- return (dp + 8);
- }
- return (0);
- }
-
- /*
- * Print out a file name and return pointer to longword past it.
- * If packet was truncated, return 0.
- */
- static u_long *
- parsefn(dp)
- register u_long *dp;
- {
- register int len;
- register u_char *cp;
-
- /* Bail if we don't have the string length */
- if ((u_char *)dp > snapend - sizeof(*dp))
- return(0);
-
- /* Fetch string length; convert to host order */
- len = *dp++;
- NTOHL(len);
-
- cp = (u_char *)dp;
- /* Update long pointer (NFS filenames are padded to long) */
- dp += ((len + 3) & ~3) / sizeof(*dp);
- if ((u_char *)dp > snapend)
- return (0);
- nfs_printfn(cp, len);
-
- return (dp);
- }
-
- /*
- * Print out file handle and file name.
- * Return pointer to longword past file name.
- * If packet was truncated (or there was some other error), return 0.
- */
- static u_long *
- parsefhn(dp)
- register u_long *dp;
- {
- dp = parsefh(dp);
- if (dp == 0)
- return (0);
- putchar(' ');
- return (parsefn(dp));
- }
-
- void
- nfsreq_print(rp, length, ip)
- register struct rpc_msg *rp;
- int length;
- register struct ip *ip;
- {
- register u_long *dp;
- register u_char *ep = snapend;
- #define TCHECK(p, l) if ((u_char *)(p) > ep - l) break
-
- #if BYTE_ORDER == LITTLE_ENDIAN
- bswap((u_long *)rp, sizeof(*rp) / sizeof(u_long));
- #endif
-
- if (!nflag)
- (void)printf("%s.%x > %s.nfs: %d",
- ipaddr_string(&ip->ip_src),
- rp->rm_xid,
- ipaddr_string(&ip->ip_dst),
- length);
- else
- (void)printf("%s.%x > %s.%x: %d",
- ipaddr_string(&ip->ip_src),
- rp->rm_xid,
- ipaddr_string(&ip->ip_dst),
- NFS_PORT,
- length);
-
- switch (rp->rm_call.cb_proc) {
- #ifdef NFSPROC_NOOP
- case NFSPROC_NOOP:
- printf(" nop");
- return;
- #else
- #define NFSPROC_NOOP -1
- #endif
- case RFS_NULL:
- printf(" null");
- return;
-
- case RFS_GETATTR:
- printf(" getattr");
- if ((dp = parsereq(rp, length)) != 0 && parsefh(dp) != 0)
- return;
- break;
-
- case RFS_SETATTR:
- printf(" setattr");
- if ((dp = parsereq(rp, length)) != 0 && parsefh(dp) != 0)
- return;
- break;
-
- #if RFS_ROOT != NFSPROC_NOOP
- case RFS_ROOT:
- printf(" root");
- break;
- #endif
- case RFS_LOOKUP:
- printf(" lookup");
- if ((dp = parsereq(rp, length)) != 0 && parsefhn(dp) != 0)
- return;
- break;
-
- case RFS_READLINK:
- printf(" readlink");
- if ((dp = parsereq(rp, length)) != 0 && parsefh(dp) != 0)
- return;
- break;
-
- case RFS_READ:
- printf(" read");
- if ((dp = parsereq(rp, length)) != 0 &&
- (dp = parsefh(dp)) != 0) {
- TCHECK(dp, 3 * sizeof(*dp));
- printf(" %lu (%lu) bytes @ %lu",
- ntohl(dp[1]), ntohl(dp[2]), ntohl(dp[0]));
- return;
- }
- break;
-
- #if RFS_WRITECACHE != NFSPROC_NOOP
- case RFS_WRITECACHE:
- printf(" writecache");
- if ((dp = parsereq(rp, length)) != 0 &&
- (dp = parsefh(dp)) != 0) {
- TCHECK(dp, 4 * sizeof(*dp));
- printf(" %lu (%lu) bytes @ %lu (%lu)",
- ntohl(dp[3]), ntohl(dp[2]),
- ntohl(dp[1]), ntohl(dp[0]));
- return;
- }
- break;
- #endif
- case RFS_WRITE:
- printf(" write");
- if ((dp = parsereq(rp, length)) != 0 &&
- (dp = parsefh(dp)) != 0) {
- TCHECK(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 RFS_CREATE:
- printf(" create");
- if ((dp = parsereq(rp, length)) != 0 && parsefhn(dp) != 0)
- return;
- break;
-
- case RFS_REMOVE:
- printf(" remove");
- if ((dp = parsereq(rp, length)) != 0 && parsefhn(dp) != 0)
- return;
- break;
-
- case RFS_RENAME:
- printf(" rename");
- if ((dp = parsereq(rp, length)) != 0 &&
- (dp = parsefhn(dp)) != 0) {
- fputs(" ->", stdout);
- if (parsefhn(dp) != 0)
- return;
- }
- break;
-
- case RFS_LINK:
- printf(" link");
- if ((dp = parsereq(rp, length)) != 0 &&
- (dp = parsefh(dp)) != 0) {
- fputs(" ->", stdout);
- if (parsefhn(dp) != 0)
- return;
- }
- break;
-
- case RFS_SYMLINK:
- printf(" symlink");
- if ((dp = parsereq(rp, length)) != 0 &&
- (dp = parsefhn(dp)) != 0) {
- fputs(" -> ", stdout);
- if (parsefn(dp) != 0)
- return;
- }
- break;
-
- case RFS_MKDIR:
- printf(" mkdir");
- if ((dp = parsereq(rp, length)) != 0 && parsefhn(dp) != 0)
- return;
- break;
-
- case RFS_RMDIR:
- printf(" rmdir");
- if ((dp = parsereq(rp, length)) != 0 && parsefhn(dp) != 0)
- return;
- break;
-
- case RFS_READDIR:
- printf(" readdir");
- if ((dp = parsereq(rp, length)) != 0 &&
- (dp = parsefh(dp)) != 0) {
- TCHECK(dp, 2 * sizeof(*dp));
- printf(" %lu bytes @ %lu", ntohl(dp[1]), ntohl(dp[0]));
- return;
- }
- break;
-
- case RFS_STATFS:
- printf(" statfs");
- if ((dp = parsereq(rp, length)) != 0 && parsefh(dp) != 0)
- return;
- break;
-
- default:
- printf(" proc-%lu", rp->rm_call.cb_proc);
- return;
- }
- fputs(" [|nfs]", stdout);
- #undef TCHECK
- }
-
- /*
- * Print out an NFS file handle.
- * We assume packet was not truncated before the end of the
- * file handle pointed to by dp.
- */
- static void
- nfs_printfh(dp)
- register u_long *dp;
- {
- /*
- * take a wild guess at the structure of file handles.
- * On sun 3s, there are 2 longs of fsid, a short
- * len == 8, a long of inode & a long of generation number.
- * On sun 4s, the len == 10 & there are 2 bytes of
- * padding immediately following it.
- */
- if (dp[2] == 0xa0000) {
- if (dp[1])
- (void) printf(" fh %ld.%ld.%lu", dp[0], dp[1], dp[3]);
- else
- (void) printf(" fh %ld.%ld", dp[0], dp[3]);
- } else if ((dp[2] >> 16) == 8)
- /*
- * 'dp' is longword aligned, so we must use the extract
- * macros below for dp+10 which cannot possibly be aligned.
- */
- if (dp[1])
- (void) printf(" fh %ld.%ld.%lu", dp[0], dp[1],
- EXTRACT_LONG((u_char *)dp + 10));
- else
- (void) printf(" fh %ld.%ld", dp[0],
- EXTRACT_LONG((u_char *)dp + 10));
- /* On Ultrix pre-4.0, three longs: fsid, fno, fgen and then zeros */
- else if (dp[3] == 0) {
- (void)printf(" fh %d,%d/%ld.%ld", major(dp[0]), minor(dp[0]),
- dp[1], dp[2]);
- }
- /*
- * On Ultrix 4.0,
- * five longs: fsid, fno, fgen, eno, egen and then zeros
- */
- else if (dp[5] == 0) {
- (void)printf(" fh %d,%d/%ld.%ld", major(dp[0]), minor(dp[0]),
- dp[1], dp[2]);
- if (vflag) {
- /* print additional info */
- (void)printf("[%ld.%ld]", dp[3], dp[4]);
- }
- }
- else
- (void) printf(" fh %lu.%lu.%lu.%lu",
- dp[0], dp[1], dp[2], dp[3]);
- }
-
- /*
- * Print out an NFS filename.
- * Assumes that len bytes from cp are present in packet.
- */
- static void
- nfs_printfn(cp, len)
- register u_char *cp;
- register int len;
- {
- register char c;
-
- /* Sanity */
- if (len >= 64) {
- fputs("[\">]", stdout);
- return;
- }
- /* Print out the filename */
- putchar('"');
- while (--len >= 0) {
- c = toascii(*cp++);
- if (!isascii(c)) {
- c = toascii(c);
- putchar('M');
- putchar('-');
- }
- if (!isprint(c)) {
- c ^= 0x40; /* DEL to ?, others to alpha */
- putchar('^');
- }
- putchar(c);
- }
- putchar('"');
- }
-