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/* $OpenBSD: showmount.c,v 1.21 2017/01/21 11:32:04 guenther Exp $ */ |
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/* $NetBSD: showmount.c,v 1.7 1996/05/01 18:14:10 cgd Exp $ */ |
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/* |
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* Copyright (c) 1989, 1993, 1995 |
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* The Regents of the University of California. All rights reserved. |
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* |
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* This code is derived from software contributed to Berkeley by |
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* Rick Macklem at The University of Guelph. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. Neither the name of the University nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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*/ |
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#include <sys/types.h> |
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#include <sys/file.h> |
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#include <sys/socket.h> |
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#include <sys/socketvar.h> |
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#include <netdb.h> |
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#include <rpc/rpc.h> |
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#include <rpc/pmap_clnt.h> |
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#include <rpc/pmap_prot.h> |
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#include <nfs/rpcv2.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <unistd.h> |
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#include <vis.h> |
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#include <err.h> |
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/* Constant defs */ |
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#define ALL 1 |
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#define DIRS 2 |
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#define DODUMP 0x1 |
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#define DOEXPORTS 0x2 |
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struct mountlist { |
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struct mountlist *ml_left; |
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struct mountlist *ml_right; |
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char ml_host[RPCMNT_NAMELEN+1]; |
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char ml_dirp[RPCMNT_PATHLEN+1]; |
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}; |
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struct grouplist { |
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struct grouplist *gr_next; |
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char gr_name[RPCMNT_NAMELEN+1]; |
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}; |
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struct exportslist { |
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struct exportslist *ex_next; |
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struct grouplist *ex_groups; |
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char ex_dirp[RPCMNT_PATHLEN+1]; |
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}; |
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static struct mountlist *mntdump; |
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static struct exportslist *exports; |
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static int type = 0; |
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void print_dump(struct mountlist *); |
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void usage(void); |
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int xdr_mntdump(XDR *, struct mountlist **); |
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int xdr_exports(XDR *, struct exportslist **); |
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/* |
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* This command queries the NFS mount daemon for it's mount list and/or |
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* it's exports list and prints them out. |
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* See "NFS: Network File System Protocol Specification, RFC1094, Appendix A" |
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* and the "Network File System Protocol XXX.." |
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* for detailed information on the protocol. |
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*/ |
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int |
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main(int argc, char *argv[]) |
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{ |
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struct exportslist *exp; |
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struct grouplist *grp; |
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struct sockaddr_in clnt_sin; |
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struct hostent *hp; |
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struct timeval timeout; |
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int rpcs = 0, mntvers = 1; |
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enum clnt_stat estat; |
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CLIENT *client; |
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char *host; |
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int ch, clnt_sock; |
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if (pledge("stdio rpath inet dns flock cpath wpath", NULL) == -1) |
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err(1, "pledge"); |
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while ((ch = getopt(argc, argv, "ade3")) != -1) |
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switch (ch) { |
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case 'a': |
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if (type == 0) { |
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type = ALL; |
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rpcs |= DODUMP; |
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} else |
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usage(); |
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break; |
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case 'd': |
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if (type == 0) { |
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type = DIRS; |
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rpcs |= DODUMP; |
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} else |
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usage(); |
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break; |
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case 'e': |
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rpcs |= DOEXPORTS; |
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break; |
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case '3': |
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mntvers = 3; |
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break; |
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default: |
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usage(); |
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} |
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argc -= optind; |
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argv += optind; |
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if (argc > 0) |
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host = *argv; |
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else |
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host = "localhost"; |
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if (rpcs == 0) |
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rpcs = DODUMP; |
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if ((hp = gethostbyname(host)) == NULL) { |
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fprintf(stderr, "showmount: unknown host %s\n", host); |
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exit(1); |
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} |
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bzero(&clnt_sin, sizeof clnt_sin); |
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clnt_sin.sin_family = AF_INET; |
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bcopy(hp->h_addr, (char *)&clnt_sin.sin_addr, hp->h_length); |
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clnt_sock = RPC_ANYSOCK; |
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client = clnttcp_create(&clnt_sin, RPCPROG_MNT, mntvers, |
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&clnt_sock, 0, 0); |
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if (client == NULL) { |
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clnt_pcreateerror("showmount: clnttcp_create"); |
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exit(1); |
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} |
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timeout.tv_sec = 30; |
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timeout.tv_usec = 0; |
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if (pledge("stdio rpath flock cpath wpath", NULL) == -1) |
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err(1, "pledge"); |
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if (rpcs & DODUMP) { |
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estat = clnt_call(client, RPCMNT_DUMP, xdr_void, NULL, |
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xdr_mntdump, (char *)&mntdump, timeout); |
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if (estat != RPC_SUCCESS) { |
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fprintf(stderr, "showmount: Can't do Mountdump rpc: "); |
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clnt_perrno(estat); |
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exit(1); |
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} |
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} |
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if (rpcs & DOEXPORTS) { |
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estat = clnt_call(client, RPCMNT_EXPORT, xdr_void, NULL, |
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xdr_exports, (char *)&exports, timeout); |
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if (estat != RPC_SUCCESS) { |
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fprintf(stderr, "showmount: Can't do Exports rpc: "); |
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clnt_perrno(estat); |
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exit(1); |
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} |
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} |
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/* Now just print out the results */ |
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if (rpcs & DODUMP) { |
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switch (type) { |
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case ALL: |
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printf("All mount points on %s:\n", host); |
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break; |
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case DIRS: |
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printf("Directories on %s:\n", host); |
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break; |
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default: |
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printf("Hosts on %s:\n", host); |
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break; |
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} |
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print_dump(mntdump); |
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} |
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if (rpcs & DOEXPORTS) { |
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char vp[(RPCMNT_PATHLEN+1)*4]; |
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char vn[(RPCMNT_NAMELEN+1)*4]; |
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printf("Exports list on %s:\n", host); |
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exp = exports; |
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while (exp) { |
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strnvis(vp, exp->ex_dirp, sizeof vp, VIS_CSTYLE); |
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printf("%-34s ", vp); |
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grp = exp->ex_groups; |
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if (grp == NULL) { |
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printf("Everyone\n"); |
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} else { |
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while (grp) { |
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strnvis(vn, grp->gr_name, sizeof vn, |
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VIS_CSTYLE); |
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printf("%s ", vn); |
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grp = grp->gr_next; |
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} |
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printf("\n"); |
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} |
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exp = exp->ex_next; |
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} |
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} |
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exit(0); |
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} |
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/* |
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* Xdr routine for retrieving the mount dump list |
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*/ |
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int |
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xdr_mntdump(XDR *xdrsp, struct mountlist **mlp) |
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{ |
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struct mountlist *mp, **otp = NULL, *tp; |
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int bool, val, val2; |
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char *strp; |
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240 |
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*mlp = NULL; |
241 |
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if (!xdr_bool(xdrsp, &bool)) |
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return (0); |
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while (bool) { |
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mp = malloc(sizeof(struct mountlist)); |
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if (mp == NULL) |
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return (0); |
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mp->ml_left = mp->ml_right = NULL; |
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strp = mp->ml_host; |
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if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN)) |
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return (0); |
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strp = mp->ml_dirp; |
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if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN)) |
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return (0); |
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/* |
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* Build a binary tree on sorted order of either host or dirp. |
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* Drop any duplications. |
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*/ |
259 |
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if (*mlp == NULL) { |
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*mlp = mp; |
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} else { |
262 |
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tp = *mlp; |
263 |
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while (tp) { |
264 |
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val = strcmp(mp->ml_host, tp->ml_host); |
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val2 = strcmp(mp->ml_dirp, tp->ml_dirp); |
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switch (type) { |
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case ALL: |
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if (val == 0) { |
269 |
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if (val2 == 0) { |
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free((caddr_t)mp); |
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goto next; |
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} |
273 |
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val = val2; |
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} |
275 |
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break; |
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case DIRS: |
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if (val2 == 0) { |
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free((caddr_t)mp); |
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goto next; |
280 |
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} |
281 |
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val = val2; |
282 |
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break; |
283 |
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default: |
284 |
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if (val == 0) { |
285 |
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free((caddr_t)mp); |
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goto next; |
287 |
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} |
288 |
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break; |
289 |
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} |
290 |
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if (val < 0) { |
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otp = &tp->ml_left; |
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tp = tp->ml_left; |
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} else { |
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otp = &tp->ml_right; |
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tp = tp->ml_right; |
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} |
297 |
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} |
298 |
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*otp = mp; |
299 |
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} |
300 |
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next: |
301 |
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if (!xdr_bool(xdrsp, &bool)) |
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return (0); |
303 |
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} |
304 |
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return (1); |
305 |
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} |
306 |
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307 |
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/* |
308 |
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* Xdr routine to retrieve exports list |
309 |
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*/ |
310 |
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int |
311 |
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xdr_exports(XDR *xdrsp, struct exportslist **exp) |
312 |
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{ |
313 |
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struct exportslist *ep; |
314 |
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struct grouplist *gp; |
315 |
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int bool, grpbool; |
316 |
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char *strp; |
317 |
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318 |
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*exp = NULL; |
319 |
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if (!xdr_bool(xdrsp, &bool)) |
320 |
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return (0); |
321 |
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while (bool) { |
322 |
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ep = malloc(sizeof(struct exportslist)); |
323 |
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if (ep == NULL) |
324 |
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return (0); |
325 |
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ep->ex_groups = NULL; |
326 |
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strp = ep->ex_dirp; |
327 |
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if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN)) |
328 |
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return (0); |
329 |
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if (!xdr_bool(xdrsp, &grpbool)) |
330 |
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return (0); |
331 |
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while (grpbool) { |
332 |
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gp = malloc(sizeof(struct grouplist)); |
333 |
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if (gp == NULL) |
334 |
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return (0); |
335 |
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strp = gp->gr_name; |
336 |
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if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN)) |
337 |
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return (0); |
338 |
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gp->gr_next = ep->ex_groups; |
339 |
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ep->ex_groups = gp; |
340 |
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if (!xdr_bool(xdrsp, &grpbool)) |
341 |
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return (0); |
342 |
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} |
343 |
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ep->ex_next = *exp; |
344 |
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*exp = ep; |
345 |
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if (!xdr_bool(xdrsp, &bool)) |
346 |
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return (0); |
347 |
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} |
348 |
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return (1); |
349 |
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} |
350 |
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|
351 |
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void |
352 |
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usage(void) |
353 |
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{ |
354 |
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|
355 |
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fprintf(stderr, "usage: showmount [-3ade] [host]\n"); |
356 |
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exit(1); |
357 |
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} |
358 |
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|
359 |
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/* |
360 |
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* Print the binary tree in inorder so that output is sorted. |
361 |
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*/ |
362 |
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void |
363 |
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print_dump(struct mountlist *mp) |
364 |
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{ |
365 |
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char vn[(RPCMNT_NAMELEN+1)*4]; |
366 |
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char vp[(RPCMNT_PATHLEN+1)*4]; |
367 |
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|
368 |
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if (mp == NULL) |
369 |
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return; |
370 |
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if (mp->ml_left) |
371 |
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print_dump(mp->ml_left); |
372 |
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switch (type) { |
373 |
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case ALL: |
374 |
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strvis(vn, mp->ml_host, VIS_CSTYLE); |
375 |
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strvis(vp, mp->ml_dirp, VIS_CSTYLE); |
376 |
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printf("%s:%s\n", vn, vp); |
377 |
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break; |
378 |
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case DIRS: |
379 |
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strvis(vp, mp->ml_dirp, VIS_CSTYLE); |
380 |
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printf("%s\n", vp); |
381 |
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break; |
382 |
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default: |
383 |
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strvis(vn, mp->ml_host, VIS_CSTYLE); |
384 |
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printf("%s\n", vn); |
385 |
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break; |
386 |
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} |
387 |
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if (mp->ml_right) |
388 |
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print_dump(mp->ml_right); |
389 |
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} |