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-rw-r--r--print-nfs.c1850
1 files changed, 1850 insertions, 0 deletions
diff --git a/print-nfs.c b/print-nfs.c
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+++ b/print-nfs.c
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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.
+ */
+
+/* \summary: Network File System (NFS) printer */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "netdissect-stdinc.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <limits.h>
+
+#include "netdissect.h"
+#include "addrtoname.h"
+#include "extract.h"
+
+#include "nfs.h"
+#include "nfsfh.h"
+
+#include "ip.h"
+#include "ip6.h"
+#include "rpc_auth.h"
+#include "rpc_msg.h"
+
+
+static void nfs_printfh(netdissect_options *, const uint32_t *, const u_int);
+static int xid_map_enter(netdissect_options *, const struct sunrpc_msg *, const u_char *);
+static int xid_map_find(netdissect_options *, const struct sunrpc_msg *, const u_char *, uint32_t *, uint32_t *);
+static void interp_reply(netdissect_options *, const struct sunrpc_msg *, uint32_t, uint32_t, int);
+static const uint32_t *parse_post_op_attr(netdissect_options *, const uint32_t *, int);
+
+/*
+ * Mapping of old NFS Version 2 RPC numbers to generic numbers.
+ */
+static uint32_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
+};
+
+static const struct tok nfsproc_str[] = {
+ { NFSPROC_NOOP, "nop" },
+ { NFSPROC_NULL, "null" },
+ { NFSPROC_GETATTR, "getattr" },
+ { NFSPROC_SETATTR, "setattr" },
+ { NFSPROC_LOOKUP, "lookup" },
+ { NFSPROC_ACCESS, "access" },
+ { NFSPROC_READLINK, "readlink" },
+ { NFSPROC_READ, "read" },
+ { NFSPROC_WRITE, "write" },
+ { NFSPROC_CREATE, "create" },
+ { NFSPROC_MKDIR, "mkdir" },
+ { NFSPROC_SYMLINK, "symlink" },
+ { NFSPROC_MKNOD, "mknod" },
+ { NFSPROC_REMOVE, "remove" },
+ { NFSPROC_RMDIR, "rmdir" },
+ { NFSPROC_RENAME, "rename" },
+ { NFSPROC_LINK, "link" },
+ { NFSPROC_READDIR, "readdir" },
+ { NFSPROC_READDIRPLUS, "readdirplus" },
+ { NFSPROC_FSSTAT, "fsstat" },
+ { NFSPROC_FSINFO, "fsinfo" },
+ { NFSPROC_PATHCONF, "pathconf" },
+ { NFSPROC_COMMIT, "commit" },
+ { 0, NULL }
+};
+
+/*
+ * NFS V2 and V3 status values.
+ *
+ * Some of these come from the RFCs for NFS V2 and V3, with the message
+ * strings taken from the FreeBSD C library "errlst.c".
+ *
+ * Others are errors that are not in the RFC but that I suspect some
+ * NFS servers could return; the values are FreeBSD errno values, as
+ * the first NFS server was the SunOS 2.0 one, and until 5.0 SunOS
+ * was primarily BSD-derived.
+ */
+static const struct tok status2str[] = {
+ { 1, "Operation not permitted" }, /* EPERM */
+ { 2, "No such file or directory" }, /* ENOENT */
+ { 5, "Input/output error" }, /* EIO */
+ { 6, "Device not configured" }, /* ENXIO */
+ { 11, "Resource deadlock avoided" }, /* EDEADLK */
+ { 12, "Cannot allocate memory" }, /* ENOMEM */
+ { 13, "Permission denied" }, /* EACCES */
+ { 17, "File exists" }, /* EEXIST */
+ { 18, "Cross-device link" }, /* EXDEV */
+ { 19, "Operation not supported by device" }, /* ENODEV */
+ { 20, "Not a directory" }, /* ENOTDIR */
+ { 21, "Is a directory" }, /* EISDIR */
+ { 22, "Invalid argument" }, /* EINVAL */
+ { 26, "Text file busy" }, /* ETXTBSY */
+ { 27, "File too large" }, /* EFBIG */
+ { 28, "No space left on device" }, /* ENOSPC */
+ { 30, "Read-only file system" }, /* EROFS */
+ { 31, "Too many links" }, /* EMLINK */
+ { 45, "Operation not supported" }, /* EOPNOTSUPP */
+ { 62, "Too many levels of symbolic links" }, /* ELOOP */
+ { 63, "File name too long" }, /* ENAMETOOLONG */
+ { 66, "Directory not empty" }, /* ENOTEMPTY */
+ { 69, "Disc quota exceeded" }, /* EDQUOT */
+ { 70, "Stale NFS file handle" }, /* ESTALE */
+ { 71, "Too many levels of remote in path" }, /* EREMOTE */
+ { 99, "Write cache flushed to disk" }, /* NFSERR_WFLUSH (not used) */
+ { 10001, "Illegal NFS file handle" }, /* NFS3ERR_BADHANDLE */
+ { 10002, "Update synchronization mismatch" }, /* NFS3ERR_NOT_SYNC */
+ { 10003, "READDIR/READDIRPLUS cookie is stale" }, /* NFS3ERR_BAD_COOKIE */
+ { 10004, "Operation not supported" }, /* NFS3ERR_NOTSUPP */
+ { 10005, "Buffer or request is too small" }, /* NFS3ERR_TOOSMALL */
+ { 10006, "Unspecified error on server" }, /* NFS3ERR_SERVERFAULT */
+ { 10007, "Object of that type not supported" }, /* NFS3ERR_BADTYPE */
+ { 10008, "Request couldn't be completed in time" }, /* NFS3ERR_JUKEBOX */
+ { 0, NULL }
+};
+
+static const struct tok nfsv3_writemodes[] = {
+ { 0, "unstable" },
+ { 1, "datasync" },
+ { 2, "filesync" },
+ { 0, NULL }
+};
+
+static const struct tok type2str[] = {
+ { NFNON, "NON" },
+ { NFREG, "REG" },
+ { NFDIR, "DIR" },
+ { NFBLK, "BLK" },
+ { NFCHR, "CHR" },
+ { NFLNK, "LNK" },
+ { NFFIFO, "FIFO" },
+ { 0, NULL }
+};
+
+static const struct tok sunrpc_auth_str[] = {
+ { SUNRPC_AUTH_OK, "OK" },
+ { SUNRPC_AUTH_BADCRED, "Bogus Credentials (seal broken)" },
+ { SUNRPC_AUTH_REJECTEDCRED, "Rejected Credentials (client should begin new session)" },
+ { SUNRPC_AUTH_BADVERF, "Bogus Verifier (seal broken)" },
+ { SUNRPC_AUTH_REJECTEDVERF, "Verifier expired or was replayed" },
+ { SUNRPC_AUTH_TOOWEAK, "Credentials are too weak" },
+ { SUNRPC_AUTH_INVALIDRESP, "Bogus response verifier" },
+ { SUNRPC_AUTH_FAILED, "Unknown failure" },
+ { 0, NULL }
+};
+
+static const struct tok sunrpc_str[] = {
+ { SUNRPC_PROG_UNAVAIL, "PROG_UNAVAIL" },
+ { SUNRPC_PROG_MISMATCH, "PROG_MISMATCH" },
+ { SUNRPC_PROC_UNAVAIL, "PROC_UNAVAIL" },
+ { SUNRPC_GARBAGE_ARGS, "GARBAGE_ARGS" },
+ { SUNRPC_SYSTEM_ERR, "SYSTEM_ERR" },
+ { 0, NULL }
+};
+
+static void
+print_nfsaddr(netdissect_options *ndo,
+ const u_char *bp, const char *s, const char *d)
+{
+ const struct ip *ip;
+ const struct ip6_hdr *ip6;
+ char srcaddr[INET6_ADDRSTRLEN], dstaddr[INET6_ADDRSTRLEN];
+
+ srcaddr[0] = dstaddr[0] = '\0';
+ switch (IP_V((const struct ip *)bp)) {
+ case 4:
+ ip = (const struct ip *)bp;
+ strlcpy(srcaddr, GET_IPADDR_STRING(ip->ip_src), sizeof(srcaddr));
+ strlcpy(dstaddr, GET_IPADDR_STRING(ip->ip_dst), sizeof(dstaddr));
+ break;
+ case 6:
+ ip6 = (const struct ip6_hdr *)bp;
+ strlcpy(srcaddr, GET_IP6ADDR_STRING(ip6->ip6_src),
+ sizeof(srcaddr));
+ strlcpy(dstaddr, GET_IP6ADDR_STRING(ip6->ip6_dst),
+ sizeof(dstaddr));
+ break;
+ default:
+ strlcpy(srcaddr, "?", sizeof(srcaddr));
+ strlcpy(dstaddr, "?", sizeof(dstaddr));
+ break;
+ }
+
+ ND_PRINT("%s.%s > %s.%s: ", srcaddr, s, dstaddr, d);
+}
+
+/*
+ * NFS Version 3 sattr3 structure for the new node creation case.
+ * This does not have a fixed layout on the network, so this
+ * structure does not correspond to the layout of the data on
+ * the network; it's used to store the data when the sattr3
+ * is parsed for use when it's later printed.
+ */
+struct nfsv3_sattr {
+ uint32_t sa_modeset;
+ uint32_t sa_mode;
+ uint32_t sa_uidset;
+ uint32_t sa_uid;
+ uint32_t sa_gidset;
+ uint32_t sa_gid;
+ uint32_t sa_sizeset;
+ uint32_t sa_size;
+ uint32_t sa_atimetype;
+ struct {
+ uint32_t nfsv3_sec;
+ uint32_t nfsv3_nsec;
+ } sa_atime;
+ uint32_t sa_mtimetype;
+ struct {
+ uint32_t nfsv3_sec;
+ uint32_t nfsv3_nsec;
+ } sa_mtime;
+};
+
+static const uint32_t *
+parse_sattr3(netdissect_options *ndo,
+ const uint32_t *dp, struct nfsv3_sattr *sa3)
+{
+ sa3->sa_modeset = GET_BE_U_4(dp);
+ dp++;
+ if (sa3->sa_modeset) {
+ sa3->sa_mode = GET_BE_U_4(dp);
+ dp++;
+ }
+
+ sa3->sa_uidset = GET_BE_U_4(dp);
+ dp++;
+ if (sa3->sa_uidset) {
+ sa3->sa_uid = GET_BE_U_4(dp);
+ dp++;
+ }
+
+ sa3->sa_gidset = GET_BE_U_4(dp);
+ dp++;
+ if (sa3->sa_gidset) {
+ sa3->sa_gid = GET_BE_U_4(dp);
+ dp++;
+ }
+
+ sa3->sa_sizeset = GET_BE_U_4(dp);
+ dp++;
+ if (sa3->sa_sizeset) {
+ sa3->sa_size = GET_BE_U_4(dp);
+ dp++;
+ }
+
+ sa3->sa_atimetype = GET_BE_U_4(dp);
+ dp++;
+ if (sa3->sa_atimetype == NFSV3SATTRTIME_TOCLIENT) {
+ sa3->sa_atime.nfsv3_sec = GET_BE_U_4(dp);
+ dp++;
+ sa3->sa_atime.nfsv3_nsec = GET_BE_U_4(dp);
+ dp++;
+ }
+
+ sa3->sa_mtimetype = GET_BE_U_4(dp);
+ dp++;
+ if (sa3->sa_mtimetype == NFSV3SATTRTIME_TOCLIENT) {
+ sa3->sa_mtime.nfsv3_sec = GET_BE_U_4(dp);
+ dp++;
+ sa3->sa_mtime.nfsv3_nsec = GET_BE_U_4(dp);
+ dp++;
+ }
+
+ return dp;
+}
+
+static void
+print_sattr3(netdissect_options *ndo,
+ const struct nfsv3_sattr *sa3, int verbose)
+{
+ if (sa3->sa_modeset)
+ ND_PRINT(" mode %o", sa3->sa_mode);
+ if (sa3->sa_uidset)
+ ND_PRINT(" uid %u", sa3->sa_uid);
+ if (sa3->sa_gidset)
+ ND_PRINT(" gid %u", sa3->sa_gid);
+ if (verbose > 1) {
+ if (sa3->sa_atimetype == NFSV3SATTRTIME_TOCLIENT)
+ ND_PRINT(" atime %u.%06u", sa3->sa_atime.nfsv3_sec,
+ sa3->sa_atime.nfsv3_nsec);
+ if (sa3->sa_mtimetype == NFSV3SATTRTIME_TOCLIENT)
+ ND_PRINT(" mtime %u.%06u", sa3->sa_mtime.nfsv3_sec,
+ sa3->sa_mtime.nfsv3_nsec);
+ }
+}
+
+void
+nfsreply_print(netdissect_options *ndo,
+ const u_char *bp, u_int length,
+ const u_char *bp2)
+{
+ const struct sunrpc_msg *rp;
+ char srcid[20], dstid[20]; /*fits 32bit*/
+
+ ndo->ndo_protocol = "nfs";
+ rp = (const struct sunrpc_msg *)bp;
+
+ if (!ndo->ndo_nflag) {
+ strlcpy(srcid, "nfs", sizeof(srcid));
+ snprintf(dstid, sizeof(dstid), "%u",
+ GET_BE_U_4(rp->rm_xid));
+ } else {
+ snprintf(srcid, sizeof(srcid), "%u", NFS_PORT);
+ snprintf(dstid, sizeof(dstid), "%u",
+ GET_BE_U_4(rp->rm_xid));
+ }
+ print_nfsaddr(ndo, bp2, srcid, dstid);
+
+ nfsreply_noaddr_print(ndo, bp, length, bp2);
+}
+
+void
+nfsreply_noaddr_print(netdissect_options *ndo,
+ const u_char *bp, u_int length,
+ const u_char *bp2)
+{
+ const struct sunrpc_msg *rp;
+ uint32_t proc, vers, reply_stat;
+ enum sunrpc_reject_stat rstat;
+ uint32_t rlow;
+ uint32_t rhigh;
+ enum sunrpc_auth_stat rwhy;
+
+ ndo->ndo_protocol = "nfs";
+ rp = (const struct sunrpc_msg *)bp;
+
+ ND_TCHECK_4(rp->rm_reply.rp_stat);
+ reply_stat = GET_BE_U_4(&rp->rm_reply.rp_stat);
+ switch (reply_stat) {
+
+ case SUNRPC_MSG_ACCEPTED:
+ ND_PRINT("reply ok %u", length);
+ if (xid_map_find(ndo, rp, bp2, &proc, &vers) >= 0)
+ interp_reply(ndo, rp, proc, vers, length);
+ break;
+
+ case SUNRPC_MSG_DENIED:
+ ND_PRINT("reply ERR %u: ", length);
+ ND_TCHECK_4(rp->rm_reply.rp_reject.rj_stat);
+ rstat = GET_BE_U_4(&rp->rm_reply.rp_reject.rj_stat);
+ switch (rstat) {
+
+ case SUNRPC_RPC_MISMATCH:
+ ND_TCHECK_4(rp->rm_reply.rp_reject.rj_vers.high);
+ rlow = GET_BE_U_4(&rp->rm_reply.rp_reject.rj_vers.low);
+ rhigh = GET_BE_U_4(&rp->rm_reply.rp_reject.rj_vers.high);
+ ND_PRINT("RPC Version mismatch (%u-%u)", rlow, rhigh);
+ break;
+
+ case SUNRPC_AUTH_ERROR:
+ ND_TCHECK_4(rp->rm_reply.rp_reject.rj_why);
+ rwhy = GET_BE_U_4(&rp->rm_reply.rp_reject.rj_why);
+ ND_PRINT("Auth %s", tok2str(sunrpc_auth_str, "Invalid failure code %u", rwhy));
+ break;
+
+ default:
+ ND_PRINT("Unknown reason for rejecting rpc message %u", (unsigned int)rstat);
+ break;
+ }
+ break;
+
+ default:
+ ND_PRINT("reply Unknown rpc response code=%u %u", reply_stat, length);
+ break;
+ }
+ return;
+
+trunc:
+ nd_print_trunc(ndo);
+}
+
+/*
+ * Return a pointer to the first file handle in the packet.
+ * If the packet was truncated, return 0.
+ */
+static const uint32_t *
+parsereq(netdissect_options *ndo,
+ const struct sunrpc_msg *rp, u_int length)
+{
+ const uint32_t *dp;
+ u_int len, rounded_len;
+
+ /*
+ * Find the start of the req data (if we captured it).
+ * First, get the length of the credentials, and make sure
+ * we have all of the opaque part of the credentials.
+ */
+ dp = (const uint32_t *)&rp->rm_call.cb_cred;
+ if (length < 2 * sizeof(*dp))
+ goto trunc;
+ len = GET_BE_U_4(dp + 1);
+ rounded_len = roundup2(len, 4);
+ ND_TCHECK_LEN(dp + 2, rounded_len);
+ if (2 * sizeof(*dp) + rounded_len <= length) {
+ /*
+ * We have all of the credentials. Skip past them; they
+ * consist of 4 bytes of flavor, 4 bytes of length,
+ * and len-rounded-up-to-a-multiple-of-4 bytes of
+ * data.
+ */
+ dp += (len + (2 * sizeof(*dp) + 3)) / sizeof(*dp);
+ length -= 2 * sizeof(*dp) + rounded_len;
+
+ /*
+ * Now get the length of the verifier, and make sure
+ * we have all of the opaque part of the verifier.
+ */
+ if (length < 2 * sizeof(*dp))
+ goto trunc;
+ len = GET_BE_U_4(dp + 1);
+ rounded_len = roundup2(len, 4);
+ ND_TCHECK_LEN(dp + 2, rounded_len);
+ if (2 * sizeof(*dp) + rounded_len < length) {
+ /*
+ * We have all of the verifier. Skip past it;
+ * it consists of 4 bytes of flavor, 4 bytes of
+ * length, and len-rounded-up-to-a-multiple-of-4
+ * bytes of data.
+ */
+ dp += (len + (2 * sizeof(*dp) + 3)) / sizeof(*dp);
+ return (dp);
+ }
+ }
+trunc:
+ return (NULL);
+}
+
+/*
+ * Print out an NFS file handle and return a pointer to following word.
+ * If packet was truncated, return 0.
+ */
+static const uint32_t *
+parsefh(netdissect_options *ndo,
+ const uint32_t *dp, int v3)
+{
+ u_int len;
+
+ if (v3) {
+ len = GET_BE_U_4(dp) / 4;
+ dp++;
+ } else
+ len = NFSX_V2FH / 4;
+
+ if (ND_TTEST_LEN(dp, len * sizeof(*dp))) {
+ nfs_printfh(ndo, dp, len);
+ return (dp + len);
+ } else
+ return NULL;
+}
+
+/*
+ * Print out a file name and return pointer to 32-bit word past it.
+ * If packet was truncated, return 0.
+ */
+static const uint32_t *
+parsefn(netdissect_options *ndo,
+ const uint32_t *dp)
+{
+ uint32_t len, rounded_len;
+ const u_char *cp;
+
+ /* Fetch big-endian string length */
+ len = GET_BE_U_4(dp);
+ dp++;
+
+ if (UINT_MAX - len < 3) {
+ ND_PRINT("[cannot pad to 32-bit boundaries]");
+ nd_print_invalid(ndo);
+ return NULL;
+ }
+
+ rounded_len = roundup2(len, 4);
+ ND_TCHECK_LEN(dp, rounded_len);
+
+ cp = (const u_char *)dp;
+ /* Update 32-bit pointer (NFS filenames padded to 32-bit boundaries) */
+ dp += rounded_len / sizeof(*dp);
+ ND_PRINT("\"");
+ if (nd_printn(ndo, cp, len, ndo->ndo_snapend)) {
+ ND_PRINT("\"");
+ goto trunc;
+ }
+ ND_PRINT("\"");
+
+ return (dp);
+trunc:
+ return NULL;
+}
+
+/*
+ * 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 0.
+ */
+static const uint32_t *
+parsefhn(netdissect_options *ndo,
+ const uint32_t *dp, int v3)
+{
+ dp = parsefh(ndo, dp, v3);
+ if (dp == NULL)
+ return (NULL);
+ ND_PRINT(" ");
+ return (parsefn(ndo, dp));
+}
+
+void
+nfsreq_noaddr_print(netdissect_options *ndo,
+ const u_char *bp, u_int length,
+ const u_char *bp2)
+{
+ const struct sunrpc_msg *rp;
+ const uint32_t *dp;
+ nfs_type type;
+ int v3;
+ uint32_t proc;
+ uint32_t access_flags;
+ struct nfsv3_sattr sa3;
+
+ ndo->ndo_protocol = "nfs";
+ ND_PRINT("%u", length);
+ rp = (const struct sunrpc_msg *)bp;
+
+ if (!xid_map_enter(ndo, rp, bp2)) /* record proc number for later on */
+ goto trunc;
+
+ v3 = (GET_BE_U_4(&rp->rm_call.cb_vers) == NFS_VER3);
+ proc = GET_BE_U_4(&rp->rm_call.cb_proc);
+
+ if (!v3 && proc < NFS_NPROCS)
+ proc = nfsv3_procid[proc];
+
+ ND_PRINT(" %s", tok2str(nfsproc_str, "proc-%u", proc));
+ switch (proc) {
+
+ case NFSPROC_GETATTR:
+ case NFSPROC_SETATTR:
+ case NFSPROC_READLINK:
+ case NFSPROC_FSSTAT:
+ case NFSPROC_FSINFO:
+ case NFSPROC_PATHCONF:
+ dp = parsereq(ndo, rp, length);
+ if (dp == NULL)
+ goto trunc;
+ if (parsefh(ndo, dp, v3) == NULL)
+ goto trunc;
+ break;
+
+ case NFSPROC_LOOKUP:
+ case NFSPROC_CREATE:
+ case NFSPROC_MKDIR:
+ case NFSPROC_REMOVE:
+ case NFSPROC_RMDIR:
+ dp = parsereq(ndo, rp, length);
+ if (dp == NULL)
+ goto trunc;
+ if (parsefhn(ndo, dp, v3) == NULL)
+ goto trunc;
+ break;
+
+ case NFSPROC_ACCESS:
+ dp = parsereq(ndo, rp, length);
+ if (dp == NULL)
+ goto trunc;
+ dp = parsefh(ndo, dp, v3);
+ if (dp == NULL)
+ goto trunc;
+ access_flags = GET_BE_U_4(dp);
+ if (access_flags & ~NFSV3ACCESS_FULL) {
+ /* NFSV3ACCESS definitions aren't up to date */
+ ND_PRINT(" %04x", access_flags);
+ } else if ((access_flags & NFSV3ACCESS_FULL) == NFSV3ACCESS_FULL) {
+ ND_PRINT(" NFS_ACCESS_FULL");
+ } else {
+ char separator = ' ';
+ if (access_flags & NFSV3ACCESS_READ) {
+ ND_PRINT(" NFS_ACCESS_READ");
+ separator = '|';
+ }
+ if (access_flags & NFSV3ACCESS_LOOKUP) {
+ ND_PRINT("%cNFS_ACCESS_LOOKUP", separator);
+ separator = '|';
+ }
+ if (access_flags & NFSV3ACCESS_MODIFY) {
+ ND_PRINT("%cNFS_ACCESS_MODIFY", separator);
+ separator = '|';
+ }
+ if (access_flags & NFSV3ACCESS_EXTEND) {
+ ND_PRINT("%cNFS_ACCESS_EXTEND", separator);
+ separator = '|';
+ }
+ if (access_flags & NFSV3ACCESS_DELETE) {
+ ND_PRINT("%cNFS_ACCESS_DELETE", separator);
+ separator = '|';
+ }
+ if (access_flags & NFSV3ACCESS_EXECUTE)
+ ND_PRINT("%cNFS_ACCESS_EXECUTE", separator);
+ }
+ break;
+
+ case NFSPROC_READ:
+ dp = parsereq(ndo, rp, length);
+ if (dp == NULL)
+ goto trunc;
+ dp = parsefh(ndo, dp, v3);
+ if (dp == NULL)
+ goto trunc;
+ if (v3) {
+ ND_PRINT(" %u bytes @ %" PRIu64,
+ GET_BE_U_4(dp + 2),
+ GET_BE_U_8(dp));
+ } else {
+ ND_PRINT(" %u bytes @ %u",
+ GET_BE_U_4(dp + 1),
+ GET_BE_U_4(dp));
+ }
+ break;
+
+ case NFSPROC_WRITE:
+ dp = parsereq(ndo, rp, length);
+ if (dp == NULL)
+ goto trunc;
+ dp = parsefh(ndo, dp, v3);
+ if (dp == NULL)
+ goto trunc;
+ if (v3) {
+ ND_PRINT(" %u (%u) bytes @ %" PRIu64,
+ GET_BE_U_4(dp + 4),
+ GET_BE_U_4(dp + 2),
+ GET_BE_U_8(dp));
+ if (ndo->ndo_vflag) {
+ ND_PRINT(" <%s>",
+ tok2str(nfsv3_writemodes,
+ NULL, GET_BE_U_4(dp + 3)));
+ }
+ } else {
+ ND_PRINT(" %u (%u) bytes @ %u (%u)",
+ GET_BE_U_4(dp + 3),
+ GET_BE_U_4(dp + 2),
+ GET_BE_U_4(dp + 1),
+ GET_BE_U_4(dp));
+ }
+ break;
+
+ case NFSPROC_SYMLINK:
+ dp = parsereq(ndo, rp, length);
+ if (dp == NULL)
+ goto trunc;
+ dp = parsefhn(ndo, dp, v3);
+ if (dp == NULL)
+ goto trunc;
+ ND_PRINT(" ->");
+ if (v3 && (dp = parse_sattr3(ndo, dp, &sa3)) == NULL)
+ goto trunc;
+ if (parsefn(ndo, dp) == NULL)
+ goto trunc;
+ if (v3 && ndo->ndo_vflag)
+ print_sattr3(ndo, &sa3, ndo->ndo_vflag);
+ break;
+
+ case NFSPROC_MKNOD:
+ dp = parsereq(ndo, rp, length);
+ if (dp == NULL)
+ goto trunc;
+ dp = parsefhn(ndo, dp, v3);
+ if (dp == NULL)
+ goto trunc;
+ type = (nfs_type) GET_BE_U_4(dp);
+ dp++;
+ dp = parse_sattr3(ndo, dp, &sa3);
+ if (dp == NULL)
+ goto trunc;
+ ND_PRINT(" %s", tok2str(type2str, "unk-ft %u", type));
+ if (ndo->ndo_vflag && (type == NFCHR || type == NFBLK)) {
+ ND_PRINT(" %u/%u",
+ GET_BE_U_4(dp),
+ GET_BE_U_4(dp + 1));
+ dp += 2;
+ }
+ if (ndo->ndo_vflag)
+ print_sattr3(ndo, &sa3, ndo->ndo_vflag);
+ break;
+
+ case NFSPROC_RENAME:
+ dp = parsereq(ndo, rp, length);
+ if (dp == NULL)
+ goto trunc;
+ dp = parsefhn(ndo, dp, v3);
+ if (dp == NULL)
+ goto trunc;
+ ND_PRINT(" ->");
+ if (parsefhn(ndo, dp, v3) == NULL)
+ goto trunc;
+ break;
+
+ case NFSPROC_LINK:
+ dp = parsereq(ndo, rp, length);
+ if (dp == NULL)
+ goto trunc;
+ dp = parsefh(ndo, dp, v3);
+ if (dp == NULL)
+ goto trunc;
+ ND_PRINT(" ->");
+ if (parsefhn(ndo, dp, v3) == NULL)
+ goto trunc;
+ break;
+
+ case NFSPROC_READDIR:
+ dp = parsereq(ndo, rp, length);
+ if (dp == NULL)
+ goto trunc;
+ dp = parsefh(ndo, dp, v3);
+ if (dp == NULL)
+ goto trunc;
+ if (v3) {
+ /*
+ * We shouldn't really try to interpret the
+ * offset cookie here.
+ */
+ ND_PRINT(" %u bytes @ %" PRId64,
+ GET_BE_U_4(dp + 4),
+ GET_BE_U_8(dp));
+ if (ndo->ndo_vflag) {
+ /*
+ * This displays the 8 bytes
+ * of the verifier in order,
+ * from the low-order byte
+ * to the high-order byte.
+ */
+ ND_PRINT(" verf %08x%08x",
+ GET_BE_U_4(dp + 2),
+ GET_BE_U_4(dp + 3));
+ }
+ } else {
+ /*
+ * Print the offset as signed, since -1 is
+ * common, but offsets > 2^31 aren't.
+ */
+ ND_PRINT(" %u bytes @ %u",
+ GET_BE_U_4(dp + 1),
+ GET_BE_U_4(dp));
+ }
+ break;
+
+ case NFSPROC_READDIRPLUS:
+ dp = parsereq(ndo, rp, length);
+ if (dp == NULL)
+ goto trunc;
+ dp = parsefh(ndo, dp, v3);
+ if (dp == NULL)
+ goto trunc;
+ /*
+ * We don't try to interpret the offset
+ * cookie here.
+ */
+ ND_PRINT(" %u bytes @ %" PRId64,
+ GET_BE_U_4(dp + 4),
+ GET_BE_U_8(dp));
+ if (ndo->ndo_vflag) {
+ /*
+ * This displays the 8 bytes
+ * of the verifier in order,
+ * from the low-order byte
+ * to the high-order byte.
+ */
+ ND_PRINT(" max %u verf %08x%08x",
+ GET_BE_U_4(dp + 5),
+ GET_BE_U_4(dp + 2),
+ GET_BE_U_4(dp + 3));
+ }
+ break;
+
+ case NFSPROC_COMMIT:
+ dp = parsereq(ndo, rp, length);
+ if (dp == NULL)
+ goto trunc;
+ dp = parsefh(ndo, dp, v3);
+ if (dp == NULL)
+ goto trunc;
+ ND_PRINT(" %u bytes @ %" PRIu64,
+ GET_BE_U_4(dp + 2),
+ GET_BE_U_8(dp));
+ break;
+
+ default:
+ break;
+ }
+ return;
+
+trunc:
+ nd_print_trunc(ndo);
+}
+
+/*
+ * 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(netdissect_options *ndo,
+ const uint32_t *dp, const u_int len)
+{
+ my_fsid fsid;
+ uint32_t ino;
+ const char *sfsname = NULL;
+ char *spacep;
+
+ if (ndo->ndo_uflag) {
+ u_int i;
+ char const *sep = "";
+
+ ND_PRINT(" fh[");
+ for (i=0; i<len; i++) {
+ /*
+ * This displays 4 bytes in big-endian byte
+ * order. That's as good a choice as little-
+ * endian, as there's no guarantee that the
+ * server is big-endian or little-endian or
+ * that the file handle contains 4-byte
+ * integral fields, and is better than "the
+ * byte order of the host running tcpdump", as
+ * the latter means that different hosts
+ * running tcpdump may show the same file
+ * handle in different ways.
+ */
+ ND_PRINT("%s%x", sep, GET_BE_U_4(dp + i));
+ sep = ":";
+ }
+ ND_PRINT("]");
+ return;
+ }
+
+ Parse_fh(ndo, (const u_char *)dp, len, &fsid, &ino, NULL, &sfsname, 0);
+
+ if (sfsname) {
+ /* file system ID is ASCII, not numeric, for this server OS */
+ char temp[NFSX_V3FHMAX+1];
+ u_int stringlen;
+
+ /* Make sure string is null-terminated */
+ stringlen = len;
+ if (stringlen > NFSX_V3FHMAX)
+ stringlen = NFSX_V3FHMAX;
+ strncpy(temp, sfsname, stringlen);
+ temp[stringlen] = '\0';
+ /* Remove trailing spaces */
+ spacep = strchr(temp, ' ');
+ if (spacep)
+ *spacep = '\0';
+
+ ND_PRINT(" fh %s/", temp);
+ } else {
+ ND_PRINT(" fh %u,%u/",
+ fsid.Fsid_dev.Major, fsid.Fsid_dev.Minor);
+ }
+
+ if(fsid.Fsid_dev.Minor == 257)
+ /* Print the undecoded handle */
+ ND_PRINT("%s", fsid.Opaque_Handle);
+ else
+ ND_PRINT("%ld", (long) 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 {
+ uint32_t xid; /* transaction ID (net order) */
+ int ipver; /* IP version (4 or 6) */
+ nd_ipv6 client; /* client IP address (net order) */
+ nd_ipv6 server; /* server IP address (net order) */
+ uint32_t proc; /* call proc number (host order) */
+ uint32_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
+
+static struct xid_map_entry xid_map[XIDMAPSIZE];
+
+static int xid_map_next = 0;
+static int xid_map_hint = 0;
+
+static int
+xid_map_enter(netdissect_options *ndo,
+ const struct sunrpc_msg *rp, const u_char *bp)
+{
+ const struct ip *ip = NULL;
+ const struct ip6_hdr *ip6 = NULL;
+ struct xid_map_entry *xmep;
+
+ if (!ND_TTEST_4(rp->rm_call.cb_proc))
+ return (0);
+ switch (IP_V((const struct ip *)bp)) {
+ case 4:
+ ip = (const struct ip *)bp;
+ break;
+ case 6:
+ ip6 = (const struct ip6_hdr *)bp;
+ break;
+ default:
+ return (1);
+ }
+
+ xmep = &xid_map[xid_map_next];
+
+ if (++xid_map_next >= XIDMAPSIZE)
+ xid_map_next = 0;
+
+ UNALIGNED_MEMCPY(&xmep->xid, &rp->rm_xid, sizeof(xmep->xid));
+ if (ip) {
+ xmep->ipver = 4;
+ UNALIGNED_MEMCPY(&xmep->client, ip->ip_src,
+ sizeof(ip->ip_src));
+ UNALIGNED_MEMCPY(&xmep->server, ip->ip_dst,
+ sizeof(ip->ip_dst));
+ }
+ else if (ip6) {
+ xmep->ipver = 6;
+ UNALIGNED_MEMCPY(&xmep->client, ip6->ip6_src,
+ sizeof(ip6->ip6_src));
+ UNALIGNED_MEMCPY(&xmep->server, ip6->ip6_dst,
+ sizeof(ip6->ip6_dst));
+ }
+ xmep->proc = GET_BE_U_4(&rp->rm_call.cb_proc);
+ xmep->vers = GET_BE_U_4(&rp->rm_call.cb_vers);
+ return (1);
+}
+
+/*
+ * Returns 0 and puts NFSPROC_xxx in proc return and
+ * version in vers return, or returns -1 on failure
+ */
+static int
+xid_map_find(netdissect_options *ndo, const struct sunrpc_msg *rp,
+ const u_char *bp, uint32_t *proc, uint32_t *vers)
+{
+ int i;
+ struct xid_map_entry *xmep;
+ uint32_t xid;
+ const struct ip *ip = (const struct ip *)bp;
+ const struct ip6_hdr *ip6 = (const struct ip6_hdr *)bp;
+ int cmp;
+
+ UNALIGNED_MEMCPY(&xid, &rp->rm_xid, sizeof(xmep->xid));
+ /* Start searching from where we last left off */
+ i = xid_map_hint;
+ do {
+ xmep = &xid_map[i];
+ cmp = 1;
+ if (xmep->ipver != IP_V(ip) || xmep->xid != xid)
+ goto nextitem;
+ switch (xmep->ipver) {
+ case 4:
+ if (UNALIGNED_MEMCMP(ip->ip_src, &xmep->server,
+ sizeof(ip->ip_src)) != 0 ||
+ UNALIGNED_MEMCMP(ip->ip_dst, &xmep->client,
+ sizeof(ip->ip_dst)) != 0) {
+ cmp = 0;
+ }
+ break;
+ case 6:
+ if (UNALIGNED_MEMCMP(ip6->ip6_src, &xmep->server,
+ sizeof(ip6->ip6_src)) != 0 ||
+ UNALIGNED_MEMCMP(ip6->ip6_dst, &xmep->client,
+ sizeof(ip6->ip6_dst)) != 0) {
+ cmp = 0;
+ }
+ break;
+ default:
+ cmp = 0;
+ break;
+ }
+ if (cmp) {
+ /* match */
+ xid_map_hint = i;
+ *proc = xmep->proc;
+ *vers = xmep->vers;
+ return 0;
+ }
+ nextitem:
+ if (++i >= XIDMAPSIZE)
+ i = 0;
+ } while (i != xid_map_hint);
+
+ /* search failed */
+ return (-1);
+}
+
+/*
+ * Routines for parsing reply packets
+ */
+
+/*
+ * Return a pointer to the beginning of the actual results.
+ * If the packet was truncated, return 0.
+ */
+static const uint32_t *
+parserep(netdissect_options *ndo,
+ const struct sunrpc_msg *rp, u_int length, int *nfserrp)
+{
+ const uint32_t *dp;
+ u_int len;
+ enum sunrpc_accept_stat astat;
+
+ /*
+ * Portability note:
+ * Here we find the address of the ar_verf credentials.
+ * Originally, this calculation was
+ * dp = (uint32_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 uint32_t *)&rp->rm_reply) + 1;
+ len = GET_BE_U_4(dp + 1);
+ if (len >= length)
+ return (NULL);
+ /*
+ * skip past the ar_verf credentials.
+ */
+ dp += (len + (2*sizeof(uint32_t) + 3)) / sizeof(uint32_t);
+
+ /*
+ * now we can check the ar_stat field
+ */
+ astat = (enum sunrpc_accept_stat) GET_BE_U_4(dp);
+ if (astat != SUNRPC_SUCCESS) {
+ ND_PRINT(" %s", tok2str(sunrpc_str, "ar_stat %u", astat));
+ *nfserrp = 1; /* suppress trunc string */
+ return (NULL);
+ }
+ /* successful return */
+ ND_TCHECK_LEN(dp, sizeof(astat));
+ return ((const uint32_t *) (sizeof(astat) + ((const char *)dp)));
+trunc:
+ return (0);
+}
+
+static const uint32_t *
+parsestatus(netdissect_options *ndo,
+ const uint32_t *dp, u_int *er, int *nfserrp)
+{
+ u_int errnum;
+
+ errnum = GET_BE_U_4(dp);
+ if (er)
+ *er = errnum;
+ if (errnum != 0) {
+ if (!ndo->ndo_qflag)
+ ND_PRINT(" ERROR: %s",
+ tok2str(status2str, "unk %u", errnum));
+ *nfserrp = 1;
+ }
+ return (dp + 1);
+}
+
+static const uint32_t *
+parsefattr(netdissect_options *ndo,
+ const uint32_t *dp, int verbose, int v3)
+{
+ const struct nfs_fattr *fap;
+
+ fap = (const struct nfs_fattr *)dp;
+ ND_TCHECK_4(fap->fa_gid);
+ if (verbose) {
+ /*
+ * XXX - UIDs and GIDs are unsigned in NFS and in
+ * at least some UN*Xes, but we'll show them as
+ * signed because -2 has traditionally been the
+ * UID for "nobody", rather than 4294967294.
+ */
+ ND_PRINT(" %s %o ids %d/%d",
+ tok2str(type2str, "unk-ft %u ",
+ GET_BE_U_4(fap->fa_type)),
+ GET_BE_U_4(fap->fa_mode),
+ GET_BE_S_4(fap->fa_uid),
+ GET_BE_S_4(fap->fa_gid));
+ if (v3) {
+ ND_PRINT(" sz %" PRIu64,
+ GET_BE_U_8(fap->fa3_size));
+ } else {
+ ND_PRINT(" sz %u", GET_BE_U_4(fap->fa2_size));
+ }
+ }
+ /* print lots more stuff */
+ if (verbose > 1) {
+ if (v3) {
+ ND_TCHECK_8(&fap->fa3_ctime);
+ ND_PRINT(" nlink %u rdev %u/%u",
+ GET_BE_U_4(fap->fa_nlink),
+ GET_BE_U_4(fap->fa3_rdev.specdata1),
+ GET_BE_U_4(fap->fa3_rdev.specdata2));
+ ND_PRINT(" fsid %" PRIx64,
+ GET_BE_U_8(fap->fa3_fsid));
+ ND_PRINT(" fileid %" PRIx64,
+ GET_BE_U_8(fap->fa3_fileid));
+ ND_PRINT(" a/m/ctime %u.%06u",
+ GET_BE_U_4(fap->fa3_atime.nfsv3_sec),
+ GET_BE_U_4(fap->fa3_atime.nfsv3_nsec));
+ ND_PRINT(" %u.%06u",
+ GET_BE_U_4(fap->fa3_mtime.nfsv3_sec),
+ GET_BE_U_4(fap->fa3_mtime.nfsv3_nsec));
+ ND_PRINT(" %u.%06u",
+ GET_BE_U_4(fap->fa3_ctime.nfsv3_sec),
+ GET_BE_U_4(fap->fa3_ctime.nfsv3_nsec));
+ } else {
+ ND_TCHECK_8(&fap->fa2_ctime);
+ ND_PRINT(" nlink %u rdev 0x%x fsid 0x%x nodeid 0x%x a/m/ctime",
+ GET_BE_U_4(fap->fa_nlink),
+ GET_BE_U_4(fap->fa2_rdev),
+ GET_BE_U_4(fap->fa2_fsid),
+ GET_BE_U_4(fap->fa2_fileid));
+ ND_PRINT(" %u.%06u",
+ GET_BE_U_4(fap->fa2_atime.nfsv2_sec),
+ GET_BE_U_4(fap->fa2_atime.nfsv2_usec));
+ ND_PRINT(" %u.%06u",
+ GET_BE_U_4(fap->fa2_mtime.nfsv2_sec),
+ GET_BE_U_4(fap->fa2_mtime.nfsv2_usec));
+ ND_PRINT(" %u.%06u",
+ GET_BE_U_4(fap->fa2_ctime.nfsv2_sec),
+ GET_BE_U_4(fap->fa2_ctime.nfsv2_usec));
+ }
+ }
+ return ((const uint32_t *)((const unsigned char *)dp +
+ (v3 ? NFSX_V3FATTR : NFSX_V2FATTR)));
+trunc:
+ return (NULL);
+}
+
+static int
+parseattrstat(netdissect_options *ndo,
+ const uint32_t *dp, int verbose, int v3, int *nfserrp)
+{
+ u_int er;
+
+ dp = parsestatus(ndo, dp, &er, nfserrp);
+ if (dp == NULL)
+ return (0);
+ if (er)
+ return (1);
+
+ return (parsefattr(ndo, dp, verbose, v3) != NULL);
+}
+
+static int
+parsediropres(netdissect_options *ndo,
+ const uint32_t *dp, int *nfserrp)
+{
+ u_int er;
+
+ dp = parsestatus(ndo, dp, &er, nfserrp);
+ if (dp == NULL)
+ return (0);
+ if (er)
+ return (1);
+
+ dp = parsefh(ndo, dp, 0);
+ if (dp == NULL)
+ return (0);
+
+ return (parsefattr(ndo, dp, ndo->ndo_vflag, 0) != NULL);
+}
+
+static int
+parselinkres(netdissect_options *ndo,
+ const uint32_t *dp, int v3, int *nfserrp)
+{
+ u_int er;
+
+ dp = parsestatus(ndo, dp, &er, nfserrp);
+ if (dp == NULL)
+ return(0);
+ if (er)
+ return(1);
+ if (v3) {
+ dp = parse_post_op_attr(ndo, dp, ndo->ndo_vflag);
+ if (dp == NULL)
+ return (0);
+ }
+ ND_PRINT(" ");
+ return (parsefn(ndo, dp) != NULL);
+}
+
+static int
+parsestatfs(netdissect_options *ndo,
+ const uint32_t *dp, int v3, int *nfserrp)
+{
+ const struct nfs_statfs *sfsp;
+ u_int er;
+
+ dp = parsestatus(ndo, dp, &er, nfserrp);
+ if (dp == NULL)
+ return (0);
+ if (!v3 && er)
+ return (1);
+
+ if (ndo->ndo_qflag)
+ return(1);
+
+ if (v3) {
+ if (ndo->ndo_vflag)
+ ND_PRINT(" POST:");
+ dp = parse_post_op_attr(ndo, dp, ndo->ndo_vflag);
+ if (dp == NULL)
+ return (0);
+ }
+
+ ND_TCHECK_LEN(dp, (v3 ? NFSX_V3STATFS : NFSX_V2STATFS));
+
+ sfsp = (const struct nfs_statfs *)dp;
+
+ if (v3) {
+ ND_PRINT(" tbytes %" PRIu64 " fbytes %" PRIu64 " abytes %" PRIu64,
+ GET_BE_U_8(sfsp->sf_tbytes),
+ GET_BE_U_8(sfsp->sf_fbytes),
+ GET_BE_U_8(sfsp->sf_abytes));
+ if (ndo->ndo_vflag) {
+ ND_PRINT(" tfiles %" PRIu64 " ffiles %" PRIu64 " afiles %" PRIu64 " invar %u",
+ GET_BE_U_8(sfsp->sf_tfiles),
+ GET_BE_U_8(sfsp->sf_ffiles),
+ GET_BE_U_8(sfsp->sf_afiles),
+ GET_BE_U_4(sfsp->sf_invarsec));
+ }
+ } else {
+ ND_PRINT(" tsize %u bsize %u blocks %u bfree %u bavail %u",
+ GET_BE_U_4(sfsp->sf_tsize),
+ GET_BE_U_4(sfsp->sf_bsize),
+ GET_BE_U_4(sfsp->sf_blocks),
+ GET_BE_U_4(sfsp->sf_bfree),
+ GET_BE_U_4(sfsp->sf_bavail));
+ }
+
+ return (1);
+trunc:
+ return (0);
+}
+
+static int
+parserddires(netdissect_options *ndo,
+ const uint32_t *dp, int *nfserrp)
+{
+ u_int er;
+
+ dp = parsestatus(ndo, dp, &er, nfserrp);
+ if (dp == NULL)
+ return (0);
+ if (er)
+ return (1);
+ if (ndo->ndo_qflag)
+ return (1);
+
+ ND_PRINT(" offset 0x%x size %u ",
+ GET_BE_U_4(dp), GET_BE_U_4(dp + 1));
+ if (GET_BE_U_4(dp + 2) != 0)
+ ND_PRINT(" eof");
+
+ return (1);
+}
+
+static const uint32_t *
+parse_wcc_attr(netdissect_options *ndo,
+ const uint32_t *dp)
+{
+ /* Our caller has already checked this */
+ ND_PRINT(" sz %" PRIu64, GET_BE_U_8(dp));
+ ND_PRINT(" mtime %u.%06u ctime %u.%06u",
+ GET_BE_U_4(dp + 2), GET_BE_U_4(dp + 3),
+ GET_BE_U_4(dp + 4), GET_BE_U_4(dp + 5));
+ return (dp + 6);
+}
+
+/*
+ * Pre operation attributes. Print only if vflag > 1.
+ */
+static const uint32_t *
+parse_pre_op_attr(netdissect_options *ndo,
+ const uint32_t *dp, int verbose)
+{
+ if (!GET_BE_U_4(dp))
+ return (dp + 1);
+ dp++;
+ ND_TCHECK_LEN(dp, 24);
+ if (verbose > 1) {
+ return parse_wcc_attr(ndo, 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 uint32_t *
+parse_post_op_attr(netdissect_options *ndo,
+ const uint32_t *dp, int verbose)
+{
+ if (!GET_BE_U_4(dp))
+ return (dp + 1);
+ dp++;
+ if (verbose) {
+ return parsefattr(ndo, dp, verbose, 1);
+ } else
+ return (dp + (NFSX_V3FATTR / sizeof (uint32_t)));
+}
+
+static const uint32_t *
+parse_wcc_data(netdissect_options *ndo,
+ const uint32_t *dp, int verbose)
+{
+ if (verbose > 1)
+ ND_PRINT(" PRE:");
+ dp = parse_pre_op_attr(ndo, dp, verbose);
+ if (dp == NULL)
+ return (0);
+
+ if (verbose)
+ ND_PRINT(" POST:");
+ return parse_post_op_attr(ndo, dp, verbose);
+}
+
+static const uint32_t *
+parsecreateopres(netdissect_options *ndo,
+ const uint32_t *dp, int verbose, int *nfserrp)
+{
+ u_int er;
+
+ dp = parsestatus(ndo, dp, &er, nfserrp);
+ if (dp == NULL)
+ return (0);
+ if (er)
+ dp = parse_wcc_data(ndo, dp, verbose);
+ else {
+ if (!GET_BE_U_4(dp))
+ return (dp + 1);
+ dp++;
+ dp = parsefh(ndo, dp, 1);
+ if (dp == NULL)
+ return (0);
+ if (verbose) {
+ dp = parse_post_op_attr(ndo, dp, verbose);
+ if (dp == NULL)
+ return (0);
+ if (ndo->ndo_vflag > 1) {
+ ND_PRINT(" dir attr:");
+ dp = parse_wcc_data(ndo, dp, verbose);
+ }
+ }
+ }
+ return (dp);
+}
+
+static const uint32_t *
+parsewccres(netdissect_options *ndo,
+ const uint32_t *dp, int verbose, int *nfserrp)
+{
+ u_int er;
+
+ dp = parsestatus(ndo, dp, &er, nfserrp);
+ if (dp == NULL)
+ return (0);
+ return parse_wcc_data(ndo, dp, verbose);
+}
+
+static const uint32_t *
+parsev3rddirres(netdissect_options *ndo,
+ const uint32_t *dp, int verbose, int *nfserrp)
+{
+ u_int er;
+
+ dp = parsestatus(ndo, dp, &er, nfserrp);
+ if (dp == NULL)
+ return (0);
+ if (ndo->ndo_vflag)
+ ND_PRINT(" POST:");
+ dp = parse_post_op_attr(ndo, dp, verbose);
+ if (dp == NULL)
+ return (0);
+ if (er)
+ return dp;
+ if (ndo->ndo_vflag) {
+ /*
+ * This displays the 8 bytes of the verifier in order,
+ * from the low-order byte to the high-order byte.
+ */
+ ND_PRINT(" verf %08x%08x",
+ GET_BE_U_4(dp), GET_BE_U_4(dp + 1));
+ dp += 2;
+ }
+ return dp;
+}
+
+static int
+parsefsinfo(netdissect_options *ndo,
+ const uint32_t *dp, int *nfserrp)
+{
+ const struct nfsv3_fsinfo *sfp;
+ u_int er;
+
+ dp = parsestatus(ndo, dp, &er, nfserrp);
+ if (dp == NULL)
+ return (0);
+ if (ndo->ndo_vflag)
+ ND_PRINT(" POST:");
+ dp = parse_post_op_attr(ndo, dp, ndo->ndo_vflag);
+ if (dp == NULL)
+ return (0);
+ if (er)
+ return (1);
+
+ sfp = (const struct nfsv3_fsinfo *)dp;
+ ND_TCHECK_SIZE(sfp);
+ ND_PRINT(" rtmax %u rtpref %u wtmax %u wtpref %u dtpref %u",
+ GET_BE_U_4(sfp->fs_rtmax),
+ GET_BE_U_4(sfp->fs_rtpref),
+ GET_BE_U_4(sfp->fs_wtmax),
+ GET_BE_U_4(sfp->fs_wtpref),
+ GET_BE_U_4(sfp->fs_dtpref));
+ if (ndo->ndo_vflag) {
+ ND_PRINT(" rtmult %u wtmult %u maxfsz %" PRIu64,
+ GET_BE_U_4(sfp->fs_rtmult),
+ GET_BE_U_4(sfp->fs_wtmult),
+ GET_BE_U_8(sfp->fs_maxfilesize));
+ ND_PRINT(" delta %u.%06u ",
+ GET_BE_U_4(sfp->fs_timedelta.nfsv3_sec),
+ GET_BE_U_4(sfp->fs_timedelta.nfsv3_nsec));
+ }
+ return (1);
+trunc:
+ return (0);
+}
+
+static int
+parsepathconf(netdissect_options *ndo,
+ const uint32_t *dp, int *nfserrp)
+{
+ u_int er;
+ const struct nfsv3_pathconf *spp;
+
+ dp = parsestatus(ndo, dp, &er, nfserrp);
+ if (dp == NULL)
+ return (0);
+ if (ndo->ndo_vflag)
+ ND_PRINT(" POST:");
+ dp = parse_post_op_attr(ndo, dp, ndo->ndo_vflag);
+ if (dp == NULL)
+ return (0);
+ if (er)
+ return (1);
+
+ spp = (const struct nfsv3_pathconf *)dp;
+ ND_TCHECK_SIZE(spp);
+
+ ND_PRINT(" linkmax %u namemax %u %s %s %s %s",
+ GET_BE_U_4(spp->pc_linkmax),
+ GET_BE_U_4(spp->pc_namemax),
+ GET_BE_U_4(spp->pc_notrunc) ? "notrunc" : "",
+ GET_BE_U_4(spp->pc_chownrestricted) ? "chownres" : "",
+ GET_BE_U_4(spp->pc_caseinsensitive) ? "igncase" : "",
+ GET_BE_U_4(spp->pc_casepreserving) ? "keepcase" : "");
+ return (1);
+trunc:
+ return (0);
+}
+
+static void
+interp_reply(netdissect_options *ndo,
+ const struct sunrpc_msg *rp, uint32_t proc, uint32_t vers,
+ int length)
+{
+ const uint32_t *dp;
+ int v3;
+ u_int er;
+ int nfserr = 0;
+
+ v3 = (vers == NFS_VER3);
+
+ if (!v3 && proc < NFS_NPROCS)
+ proc = nfsv3_procid[proc];
+
+ ND_PRINT(" %s", tok2str(nfsproc_str, "proc-%u", proc));
+ switch (proc) {
+
+ case NFSPROC_GETATTR:
+ dp = parserep(ndo, rp, length, &nfserr);
+ if (dp == NULL)
+ goto trunc;
+ if (parseattrstat(ndo, dp, !ndo->ndo_qflag, v3, &nfserr) == 0)
+ goto trunc;
+ break;
+
+ case NFSPROC_SETATTR:
+ dp = parserep(ndo, rp, length, &nfserr);
+ if (dp == NULL)
+ goto trunc;
+ if (v3) {
+ if (parsewccres(ndo, dp, ndo->ndo_vflag, &nfserr) == 0)
+ goto trunc;
+ } else {
+ if (parseattrstat(ndo, dp, !ndo->ndo_qflag, 0, &nfserr) == 0)
+ goto trunc;
+ }
+ break;
+
+ case NFSPROC_LOOKUP:
+ dp = parserep(ndo, rp, length, &nfserr);
+ if (dp == NULL)
+ goto trunc;
+ if (v3) {
+ dp = parsestatus(ndo, dp, &er, &nfserr);
+ if (dp == NULL)
+ goto trunc;
+ if (er) {
+ if (ndo->ndo_vflag > 1) {
+ ND_PRINT(" post dattr:");
+ dp = parse_post_op_attr(ndo, dp, ndo->ndo_vflag);
+ if (dp == NULL)
+ goto trunc;
+ }
+ } else {
+ dp = parsefh(ndo, dp, v3);
+ if (dp == NULL)
+ goto trunc;
+ dp = parse_post_op_attr(ndo, dp, ndo->ndo_vflag);
+ if (dp == NULL)
+ goto trunc;
+ if (ndo->ndo_vflag > 1) {
+ ND_PRINT(" post dattr:");
+ dp = parse_post_op_attr(ndo, dp, ndo->ndo_vflag);
+ if (dp == NULL)
+ goto trunc;
+ }
+ }
+ } else {
+ if (parsediropres(ndo, dp, &nfserr) == 0)
+ goto trunc;
+ }
+ break;
+
+ case NFSPROC_ACCESS:
+ dp = parserep(ndo, rp, length, &nfserr);
+ if (dp == NULL)
+ goto trunc;
+ dp = parsestatus(ndo, dp, &er, &nfserr);
+ if (dp == NULL)
+ goto trunc;
+ if (ndo->ndo_vflag)
+ ND_PRINT(" attr:");
+ dp = parse_post_op_attr(ndo, dp, ndo->ndo_vflag);
+ if (dp == NULL)
+ goto trunc;
+ if (!er) {
+ ND_PRINT(" c %04x", GET_BE_U_4(dp));
+ }
+ break;
+
+ case NFSPROC_READLINK:
+ dp = parserep(ndo, rp, length, &nfserr);
+ if (dp == NULL)
+ goto trunc;
+ if (parselinkres(ndo, dp, v3, &nfserr) == 0)
+ goto trunc;
+ break;
+
+ case NFSPROC_READ:
+ dp = parserep(ndo, rp, length, &nfserr);
+ if (dp == NULL)
+ goto trunc;
+ if (v3) {
+ dp = parsestatus(ndo, dp, &er, &nfserr);
+ if (dp == NULL)
+ goto trunc;
+ dp = parse_post_op_attr(ndo, dp, ndo->ndo_vflag);
+ if (dp == NULL)
+ goto trunc;
+ if (!er) {
+ if (ndo->ndo_vflag) {
+ ND_PRINT(" %u bytes", GET_BE_U_4(dp));
+ if (GET_BE_U_4(dp + 1))
+ ND_PRINT(" EOF");
+ }
+ }
+ } else {
+ if (parseattrstat(ndo, dp, ndo->ndo_vflag, 0, &nfserr) == 0)
+ goto trunc;
+ }
+ break;
+
+ case NFSPROC_WRITE:
+ dp = parserep(ndo, rp, length, &nfserr);
+ if (dp == NULL)
+ goto trunc;
+ if (v3) {
+ dp = parsestatus(ndo, dp, &er, &nfserr);
+ if (dp == NULL)
+ goto trunc;
+ dp = parse_wcc_data(ndo, dp, ndo->ndo_vflag);
+ if (dp == NULL)
+ goto trunc;
+ if (!er) {
+ if (ndo->ndo_vflag) {
+ ND_PRINT(" %u bytes", GET_BE_U_4(dp));
+ if (ndo->ndo_vflag > 1) {
+ ND_PRINT(" <%s>",
+ tok2str(nfsv3_writemodes,
+ NULL, GET_BE_U_4(dp + 1)));
+
+ /* write-verf-cookie */
+ ND_PRINT(" verf %" PRIx64,
+ GET_BE_U_8(dp + 2));
+ }
+ }
+ }
+ return;
+ } else {
+ if (parseattrstat(ndo, dp, ndo->ndo_vflag, v3, &nfserr) == 0)
+ goto trunc;
+ }
+ break;
+
+ case NFSPROC_CREATE:
+ case NFSPROC_MKDIR:
+ dp = parserep(ndo, rp, length, &nfserr);
+ if (dp == NULL)
+ goto trunc;
+ if (v3) {
+ if (parsecreateopres(ndo, dp, ndo->ndo_vflag, &nfserr) == NULL)
+ goto trunc;
+ } else {
+ if (parsediropres(ndo, dp, &nfserr) == 0)
+ goto trunc;
+ }
+ break;
+
+ case NFSPROC_SYMLINK:
+ dp = parserep(ndo, rp, length, &nfserr);
+ if (dp == NULL)
+ goto trunc;
+ if (v3) {
+ if (parsecreateopres(ndo, dp, ndo->ndo_vflag, &nfserr) == NULL)
+ goto trunc;
+ } else {
+ if (parsestatus(ndo, dp, &er, &nfserr) == NULL)
+ goto trunc;
+ }
+ break;
+
+ case NFSPROC_MKNOD:
+ dp = parserep(ndo, rp, length, &nfserr);
+ if (dp == NULL)
+ goto trunc;
+ if (parsecreateopres(ndo, dp, ndo->ndo_vflag, &nfserr) == NULL)
+ goto trunc;
+ break;
+
+ case NFSPROC_REMOVE:
+ case NFSPROC_RMDIR:
+ dp = parserep(ndo, rp, length, &nfserr);
+ if (dp == NULL)
+ goto trunc;
+ if (v3) {
+ if (parsewccres(ndo, dp, ndo->ndo_vflag, &nfserr) == NULL)
+ goto trunc;
+ } else {
+ if (parsestatus(ndo, dp, &er, &nfserr) == NULL)
+ goto trunc;
+ }
+ break;
+
+ case NFSPROC_RENAME:
+ dp = parserep(ndo, rp, length, &nfserr);
+ if (dp == NULL)
+ goto trunc;
+ if (v3) {
+ dp = parsestatus(ndo, dp, &er, &nfserr);
+ if (dp == NULL)
+ goto trunc;
+ if (ndo->ndo_vflag) {
+ ND_PRINT(" from:");
+ dp = parse_wcc_data(ndo, dp, ndo->ndo_vflag);
+ if (dp == NULL)
+ goto trunc;
+ ND_PRINT(" to:");
+ dp = parse_wcc_data(ndo, dp, ndo->ndo_vflag);
+ if (dp == NULL)
+ goto trunc;
+ }
+ } else {
+ if (parsestatus(ndo, dp, &er, &nfserr) == NULL)
+ goto trunc;
+ }
+ break;
+
+ case NFSPROC_LINK:
+ dp = parserep(ndo, rp, length, &nfserr);
+ if (dp == NULL)
+ goto trunc;
+ if (v3) {
+ dp = parsestatus(ndo, dp, &er, &nfserr);
+ if (dp == NULL)
+ goto trunc;
+ if (ndo->ndo_vflag) {
+ ND_PRINT(" file POST:");
+ dp = parse_post_op_attr(ndo, dp, ndo->ndo_vflag);
+ if (dp == NULL)
+ goto trunc;
+ ND_PRINT(" dir:");
+ dp = parse_wcc_data(ndo, dp, ndo->ndo_vflag);
+ if (dp == NULL)
+ goto trunc;
+ }
+ return;
+ } else {
+ if (parsestatus(ndo, dp, &er, &nfserr) == NULL)
+ goto trunc;
+ }
+ break;
+
+ case NFSPROC_READDIR:
+ dp = parserep(ndo, rp, length, &nfserr);
+ if (dp == NULL)
+ goto trunc;
+ if (v3) {
+ if (parsev3rddirres(ndo, dp, ndo->ndo_vflag, &nfserr) == NULL)
+ goto trunc;
+ } else {
+ if (parserddires(ndo, dp, &nfserr) == 0)
+ goto trunc;
+ }
+ break;
+
+ case NFSPROC_READDIRPLUS:
+ dp = parserep(ndo, rp, length, &nfserr);
+ if (dp == NULL)
+ goto trunc;
+ if (parsev3rddirres(ndo, dp, ndo->ndo_vflag, &nfserr) == NULL)
+ goto trunc;
+ break;
+
+ case NFSPROC_FSSTAT:
+ dp = parserep(ndo, rp, length, &nfserr);
+ if (dp == NULL)
+ goto trunc;
+ if (parsestatfs(ndo, dp, v3, &nfserr) == 0)
+ goto trunc;
+ break;
+
+ case NFSPROC_FSINFO:
+ dp = parserep(ndo, rp, length, &nfserr);
+ if (dp == NULL)
+ goto trunc;
+ if (parsefsinfo(ndo, dp, &nfserr) == 0)
+ goto trunc;
+ break;
+
+ case NFSPROC_PATHCONF:
+ dp = parserep(ndo, rp, length, &nfserr);
+ if (dp == NULL)
+ goto trunc;
+ if (parsepathconf(ndo, dp, &nfserr) == 0)
+ goto trunc;
+ break;
+
+ case NFSPROC_COMMIT:
+ dp = parserep(ndo, rp, length, &nfserr);
+ if (dp == NULL)
+ goto trunc;
+ dp = parsewccres(ndo, dp, ndo->ndo_vflag, &nfserr);
+ if (dp == NULL)
+ goto trunc;
+ if (ndo->ndo_vflag > 1) {
+ /* write-verf-cookie */
+ ND_PRINT(" verf %" PRIx64, GET_BE_U_8(dp));
+ }
+ break;
+
+ default:
+ break;
+ }
+ return;
+
+trunc:
+ if (!nfserr)
+ nd_print_trunc(ndo);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-22 04:28:22 +0000