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1.12 ! millert 1: /* $OpenBSD: showmount.c,v 1.11 2003/04/30 21:27:23 vincent Exp $ */
1.3 deraadt 2: /* $NetBSD: showmount.c,v 1.7 1996/05/01 18:14:10 cgd Exp $ */
1.1 deraadt 3:
4: /*
5: * Copyright (c) 1989, 1993, 1995
6: * The Regents of the University of California. All rights reserved.
7: *
8: * This code is derived from software contributed to Berkeley by
9: * Rick Macklem at The University of Guelph.
10: *
11: * Redistribution and use in source and binary forms, with or without
12: * modification, are permitted provided that the following conditions
13: * are met:
14: * 1. Redistributions of source code must retain the above copyright
15: * notice, this list of conditions and the following disclaimer.
16: * 2. Redistributions in binary form must reproduce the above copyright
17: * notice, this list of conditions and the following disclaimer in the
18: * documentation and/or other materials provided with the distribution.
1.12 ! millert 19: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 20: * may be used to endorse or promote products derived from this software
21: * without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33: * SUCH DAMAGE.
34: */
35:
36: #ifndef lint
37: static char copyright[] =
38: "@(#) Copyright (c) 1989, 1993, 1995\n\
39: The Regents of the University of California. All rights reserved.\n";
1.8 heko 40: #endif /* not lint */
1.1 deraadt 41:
42: #ifndef lint
43: #if 0
44: static char sccsid[] = "@(#)showmount.c 8.3 (Berkeley) 3/29/95";
45: #endif
1.12 ! millert 46: static char rcsid[] = "$OpenBSD: showmount.c,v 1.11 2003/04/30 21:27:23 vincent Exp $";
1.8 heko 47: #endif /* not lint */
1.1 deraadt 48:
49: #include <sys/types.h>
50: #include <sys/file.h>
51: #include <sys/socket.h>
52: #include <sys/socketvar.h>
53:
54: #include <netdb.h>
55: #include <rpc/rpc.h>
56: #include <rpc/pmap_clnt.h>
57: #include <rpc/pmap_prot.h>
58: #include <nfs/rpcv2.h>
59:
60: #include <stdio.h>
61: #include <stdlib.h>
62: #include <string.h>
63: #include <unistd.h>
1.5 deraadt 64: #include <vis.h>
1.1 deraadt 65:
66: /* Constant defs */
67: #define ALL 1
68: #define DIRS 2
69:
70: #define DODUMP 0x1
71: #define DOEXPORTS 0x2
72:
73: struct mountlist {
74: struct mountlist *ml_left;
75: struct mountlist *ml_right;
76: char ml_host[RPCMNT_NAMELEN+1];
77: char ml_dirp[RPCMNT_PATHLEN+1];
78: };
79:
80: struct grouplist {
81: struct grouplist *gr_next;
82: char gr_name[RPCMNT_NAMELEN+1];
83: };
84:
85: struct exportslist {
86: struct exportslist *ex_next;
87: struct grouplist *ex_groups;
88: char ex_dirp[RPCMNT_PATHLEN+1];
89: };
90:
91: static struct mountlist *mntdump;
92: static struct exportslist *exports;
93: static int type = 0;
94:
1.10 millert 95: void print_dump(struct mountlist *);
96: void usage(void);
97: int xdr_mntdump(XDR *, struct mountlist **);
98: int xdr_exports(XDR *, struct exportslist **);
1.1 deraadt 99:
100: /*
101: * This command queries the NFS mount daemon for it's mount list and/or
102: * it's exports list and prints them out.
103: * See "NFS: Network File System Protocol Specification, RFC1094, Appendix A"
104: * and the "Network File System Protocol XXX.."
105: * for detailed information on the protocol.
106: */
107: int
108: main(argc, argv)
109: int argc;
110: char **argv;
111: {
112: struct exportslist *exp;
113: struct grouplist *grp;
1.6 deraadt 114: struct sockaddr_in clnt_sin;
115: struct hostent *hp;
116: struct timeval timeout;
117: int rpcs = 0, mntvers = 1;
118: enum clnt_stat estat;
119: CLIENT *client;
1.2 deraadt 120: char *host;
1.6 deraadt 121: int ch, clnt_sock;
1.1 deraadt 122:
1.2 deraadt 123: while ((ch = getopt(argc, argv, "ade3")) != -1)
1.1 deraadt 124: switch((char)ch) {
125: case 'a':
126: if (type == 0) {
127: type = ALL;
128: rpcs |= DODUMP;
129: } else
130: usage();
131: break;
132: case 'd':
133: if (type == 0) {
134: type = DIRS;
135: rpcs |= DODUMP;
136: } else
137: usage();
138: break;
139: case 'e':
140: rpcs |= DOEXPORTS;
141: break;
142: case '3':
143: mntvers = 3;
144: break;
145: case '?':
146: default:
147: usage();
148: }
149: argc -= optind;
150: argv += optind;
151:
152: if (argc > 0)
153: host = *argv;
154: else
155: host = "localhost";
156:
157: if (rpcs == 0)
158: rpcs = DODUMP;
159:
1.6 deraadt 160: if ((hp = gethostbyname(host)) == NULL) {
161: fprintf(stderr, "showmount: unknown host %s\n", host);
162: exit(1);
163: }
164: bzero(&clnt_sin, sizeof clnt_sin);
165: clnt_sin.sin_len = sizeof clnt_sin;
166: clnt_sin.sin_family = AF_INET;
167: bcopy(hp->h_addr, (char *)&clnt_sin.sin_addr, hp->h_length);
168: clnt_sock = RPC_ANYSOCK;
169: client = clnttcp_create(&clnt_sin, RPCPROG_MNT, mntvers,
170: &clnt_sock, 0, 0);
171: if (client == NULL) {
172: clnt_pcreateerror("showmount: clnttcp_create");
173: exit(1);
174: }
175: timeout.tv_sec = 30;
176: timeout.tv_usec = 0;
177:
178: if (rpcs & DODUMP) {
179: estat = clnt_call(client, RPCMNT_DUMP, xdr_void, (char *)0,
180: xdr_mntdump, (char *)&mntdump, timeout);
181: if (estat != RPC_SUCCESS) {
1.3 deraadt 182: fprintf(stderr, "showmount: Can't do Mountdump rpc: ");
1.1 deraadt 183: clnt_perrno(estat);
184: exit(1);
185: }
1.6 deraadt 186: }
187: if (rpcs & DOEXPORTS) {
188: estat = clnt_call(client, RPCMNT_EXPORT, xdr_void, (char *)0,
189: xdr_exports, (char *)&exports, timeout);
190: if (estat != RPC_SUCCESS) {
1.3 deraadt 191: fprintf(stderr, "showmount: Can't do Exports rpc: ");
1.1 deraadt 192: clnt_perrno(estat);
193: exit(1);
194: }
1.6 deraadt 195: }
1.1 deraadt 196:
197: /* Now just print out the results */
198: if (rpcs & DODUMP) {
199: switch (type) {
200: case ALL:
201: printf("All mount points on %s:\n", host);
202: break;
203: case DIRS:
204: printf("Directories on %s:\n", host);
205: break;
206: default:
207: printf("Hosts on %s:\n", host);
208: break;
1.9 deraadt 209: }
1.1 deraadt 210: print_dump(mntdump);
211: }
212: if (rpcs & DOEXPORTS) {
1.5 deraadt 213: char vp[(RPCMNT_PATHLEN+1)*4];
214: char vn[(RPCMNT_NAMELEN+1)*4];
215:
1.1 deraadt 216: printf("Exports list on %s:\n", host);
217: exp = exports;
218: while (exp) {
1.11 vincent 219: strnvis(vp, exp->ex_dirp, sizeof vp, VIS_CSTYLE);
1.5 deraadt 220: printf("%-35s", vp);
1.1 deraadt 221: grp = exp->ex_groups;
222: if (grp == NULL) {
223: printf("Everyone\n");
224: } else {
225: while (grp) {
1.11 vincent 226: strnvis(vn, grp->gr_name, sizeof vn,
227: VIS_CSTYLE);
1.5 deraadt 228: printf("%s ", vn);
1.1 deraadt 229: grp = grp->gr_next;
230: }
231: printf("\n");
232: }
233: exp = exp->ex_next;
234: }
235: }
236:
237: exit(0);
238: }
239:
240: /*
241: * Xdr routine for retrieving the mount dump list
242: */
243: int
244: xdr_mntdump(xdrsp, mlp)
245: XDR *xdrsp;
246: struct mountlist **mlp;
247: {
1.7 deraadt 248: struct mountlist *mp, **otp = NULL, *tp;
1.1 deraadt 249: int bool, val, val2;
250: char *strp;
251:
252: *mlp = (struct mountlist *)0;
253: if (!xdr_bool(xdrsp, &bool))
254: return (0);
255: while (bool) {
256: mp = (struct mountlist *)malloc(sizeof(struct mountlist));
257: if (mp == NULL)
258: return (0);
259: mp->ml_left = mp->ml_right = (struct mountlist *)0;
260: strp = mp->ml_host;
261: if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN))
262: return (0);
263: strp = mp->ml_dirp;
264: if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN))
265: return (0);
266:
267: /*
268: * Build a binary tree on sorted order of either host or dirp.
269: * Drop any duplications.
270: */
271: if (*mlp == NULL) {
272: *mlp = mp;
273: } else {
274: tp = *mlp;
275: while (tp) {
276: val = strcmp(mp->ml_host, tp->ml_host);
277: val2 = strcmp(mp->ml_dirp, tp->ml_dirp);
278: switch (type) {
279: case ALL:
280: if (val == 0) {
281: if (val2 == 0) {
282: free((caddr_t)mp);
283: goto next;
284: }
285: val = val2;
286: }
287: break;
288: case DIRS:
289: if (val2 == 0) {
290: free((caddr_t)mp);
291: goto next;
292: }
293: val = val2;
294: break;
295: default:
296: if (val == 0) {
297: free((caddr_t)mp);
298: goto next;
299: }
300: break;
1.7 deraadt 301: }
1.1 deraadt 302: if (val < 0) {
303: otp = &tp->ml_left;
304: tp = tp->ml_left;
305: } else {
306: otp = &tp->ml_right;
307: tp = tp->ml_right;
308: }
309: }
310: *otp = mp;
311: }
312: next:
313: if (!xdr_bool(xdrsp, &bool))
314: return (0);
315: }
316: return (1);
317: }
318:
319: /*
320: * Xdr routine to retrieve exports list
321: */
322: int
323: xdr_exports(xdrsp, exp)
324: XDR *xdrsp;
325: struct exportslist **exp;
326: {
327: struct exportslist *ep;
328: struct grouplist *gp;
329: int bool, grpbool;
330: char *strp;
331:
332: *exp = (struct exportslist *)0;
333: if (!xdr_bool(xdrsp, &bool))
334: return (0);
335: while (bool) {
336: ep = (struct exportslist *)malloc(sizeof(struct exportslist));
337: if (ep == NULL)
338: return (0);
339: ep->ex_groups = (struct grouplist *)0;
340: strp = ep->ex_dirp;
341: if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN))
342: return (0);
343: if (!xdr_bool(xdrsp, &grpbool))
344: return (0);
345: while (grpbool) {
1.6 deraadt 346: gp = (struct grouplist *)malloc(
347: sizeof(struct grouplist));
1.1 deraadt 348: if (gp == NULL)
349: return (0);
350: strp = gp->gr_name;
351: if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN))
352: return (0);
353: gp->gr_next = ep->ex_groups;
354: ep->ex_groups = gp;
355: if (!xdr_bool(xdrsp, &grpbool))
356: return (0);
357: }
358: ep->ex_next = *exp;
359: *exp = ep;
360: if (!xdr_bool(xdrsp, &bool))
361: return (0);
362: }
363: return (1);
364: }
365:
366: void
367: usage()
368: {
369:
1.3 deraadt 370: fprintf(stderr, "usage: showmount [-ade3] host\n");
1.1 deraadt 371: exit(1);
372: }
373:
374: /*
375: * Print the binary tree in inorder so that output is sorted.
376: */
377: void
378: print_dump(mp)
379: struct mountlist *mp;
380: {
1.5 deraadt 381: char vn[(RPCMNT_NAMELEN+1)*4];
382: char vp[(RPCMNT_PATHLEN+1)*4];
1.1 deraadt 383:
384: if (mp == NULL)
385: return;
386: if (mp->ml_left)
387: print_dump(mp->ml_left);
388: switch (type) {
389: case ALL:
1.5 deraadt 390: strvis(vn, mp->ml_host, VIS_CSTYLE);
391: strvis(vp, mp->ml_dirp, VIS_CSTYLE);
392: printf("%s:%s\n", vn, vp);
1.1 deraadt 393: break;
394: case DIRS:
1.5 deraadt 395: strvis(vp, mp->ml_dirp, VIS_CSTYLE);
396: printf("%s\n", vp);
1.1 deraadt 397: break;
398: default:
1.5 deraadt 399: strvis(vn, mp->ml_host, VIS_CSTYLE);
400: printf("%s\n", vn);
1.1 deraadt 401: break;
1.9 deraadt 402: }
1.1 deraadt 403: if (mp->ml_right)
404: print_dump(mp->ml_right);
405: }