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1.14 ! deraadt 1: /* $OpenBSD: showmount.c,v 1.13 2003/06/10 22:20:51 deraadt 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
1.14 ! deraadt 46: static char rcsid[] = "$OpenBSD: showmount.c,v 1.13 2003/06/10 22:20:51 deraadt 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
1.13 deraadt 108: main(int argc, char *argv[])
1.1 deraadt 109: {
110: struct exportslist *exp;
111: struct grouplist *grp;
1.6 deraadt 112: struct sockaddr_in clnt_sin;
113: struct hostent *hp;
114: struct timeval timeout;
115: int rpcs = 0, mntvers = 1;
116: enum clnt_stat estat;
117: CLIENT *client;
1.2 deraadt 118: char *host;
1.6 deraadt 119: int ch, clnt_sock;
1.1 deraadt 120:
1.2 deraadt 121: while ((ch = getopt(argc, argv, "ade3")) != -1)
1.14 ! deraadt 122: switch (ch) {
1.1 deraadt 123: case 'a':
124: if (type == 0) {
125: type = ALL;
126: rpcs |= DODUMP;
127: } else
128: usage();
129: break;
130: case 'd':
131: if (type == 0) {
132: type = DIRS;
133: rpcs |= DODUMP;
134: } else
135: usage();
136: break;
137: case 'e':
138: rpcs |= DOEXPORTS;
139: break;
140: case '3':
141: mntvers = 3;
142: break;
143: default:
144: usage();
145: }
146: argc -= optind;
147: argv += optind;
148:
149: if (argc > 0)
150: host = *argv;
151: else
152: host = "localhost";
153:
154: if (rpcs == 0)
155: rpcs = DODUMP;
156:
1.6 deraadt 157: if ((hp = gethostbyname(host)) == NULL) {
158: fprintf(stderr, "showmount: unknown host %s\n", host);
159: exit(1);
160: }
161: bzero(&clnt_sin, sizeof clnt_sin);
162: clnt_sin.sin_len = sizeof clnt_sin;
163: clnt_sin.sin_family = AF_INET;
164: bcopy(hp->h_addr, (char *)&clnt_sin.sin_addr, hp->h_length);
165: clnt_sock = RPC_ANYSOCK;
166: client = clnttcp_create(&clnt_sin, RPCPROG_MNT, mntvers,
167: &clnt_sock, 0, 0);
168: if (client == NULL) {
169: clnt_pcreateerror("showmount: clnttcp_create");
170: exit(1);
171: }
172: timeout.tv_sec = 30;
173: timeout.tv_usec = 0;
174:
175: if (rpcs & DODUMP) {
176: estat = clnt_call(client, RPCMNT_DUMP, xdr_void, (char *)0,
177: xdr_mntdump, (char *)&mntdump, timeout);
178: if (estat != RPC_SUCCESS) {
1.3 deraadt 179: fprintf(stderr, "showmount: Can't do Mountdump rpc: ");
1.1 deraadt 180: clnt_perrno(estat);
181: exit(1);
182: }
1.6 deraadt 183: }
184: if (rpcs & DOEXPORTS) {
185: estat = clnt_call(client, RPCMNT_EXPORT, xdr_void, (char *)0,
186: xdr_exports, (char *)&exports, timeout);
187: if (estat != RPC_SUCCESS) {
1.3 deraadt 188: fprintf(stderr, "showmount: Can't do Exports rpc: ");
1.1 deraadt 189: clnt_perrno(estat);
190: exit(1);
191: }
1.6 deraadt 192: }
1.1 deraadt 193:
194: /* Now just print out the results */
195: if (rpcs & DODUMP) {
196: switch (type) {
197: case ALL:
198: printf("All mount points on %s:\n", host);
199: break;
200: case DIRS:
201: printf("Directories on %s:\n", host);
202: break;
203: default:
204: printf("Hosts on %s:\n", host);
205: break;
1.9 deraadt 206: }
1.1 deraadt 207: print_dump(mntdump);
208: }
209: if (rpcs & DOEXPORTS) {
1.5 deraadt 210: char vp[(RPCMNT_PATHLEN+1)*4];
211: char vn[(RPCMNT_NAMELEN+1)*4];
212:
1.1 deraadt 213: printf("Exports list on %s:\n", host);
214: exp = exports;
215: while (exp) {
1.11 vincent 216: strnvis(vp, exp->ex_dirp, sizeof vp, VIS_CSTYLE);
1.5 deraadt 217: printf("%-35s", vp);
1.1 deraadt 218: grp = exp->ex_groups;
219: if (grp == NULL) {
220: printf("Everyone\n");
221: } else {
222: while (grp) {
1.11 vincent 223: strnvis(vn, grp->gr_name, sizeof vn,
224: VIS_CSTYLE);
1.5 deraadt 225: printf("%s ", vn);
1.1 deraadt 226: grp = grp->gr_next;
227: }
228: printf("\n");
229: }
230: exp = exp->ex_next;
231: }
232: }
233:
234: exit(0);
235: }
236:
237: /*
238: * Xdr routine for retrieving the mount dump list
239: */
240: int
1.13 deraadt 241: xdr_mntdump(XDR *xdrsp, struct mountlist **mlp)
1.1 deraadt 242: {
1.7 deraadt 243: struct mountlist *mp, **otp = NULL, *tp;
1.1 deraadt 244: int bool, val, val2;
245: char *strp;
246:
247: *mlp = (struct mountlist *)0;
248: if (!xdr_bool(xdrsp, &bool))
249: return (0);
250: while (bool) {
251: mp = (struct mountlist *)malloc(sizeof(struct mountlist));
252: if (mp == NULL)
253: return (0);
254: mp->ml_left = mp->ml_right = (struct mountlist *)0;
255: strp = mp->ml_host;
256: if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN))
257: return (0);
258: strp = mp->ml_dirp;
259: if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN))
260: return (0);
261:
262: /*
263: * Build a binary tree on sorted order of either host or dirp.
264: * Drop any duplications.
265: */
266: if (*mlp == NULL) {
267: *mlp = mp;
268: } else {
269: tp = *mlp;
270: while (tp) {
271: val = strcmp(mp->ml_host, tp->ml_host);
272: val2 = strcmp(mp->ml_dirp, tp->ml_dirp);
273: switch (type) {
274: case ALL:
275: if (val == 0) {
276: if (val2 == 0) {
277: free((caddr_t)mp);
278: goto next;
279: }
280: val = val2;
281: }
282: break;
283: case DIRS:
284: if (val2 == 0) {
285: free((caddr_t)mp);
286: goto next;
287: }
288: val = val2;
289: break;
290: default:
291: if (val == 0) {
292: free((caddr_t)mp);
293: goto next;
294: }
295: break;
1.7 deraadt 296: }
1.1 deraadt 297: if (val < 0) {
298: otp = &tp->ml_left;
299: tp = tp->ml_left;
300: } else {
301: otp = &tp->ml_right;
302: tp = tp->ml_right;
303: }
304: }
305: *otp = mp;
306: }
307: next:
308: if (!xdr_bool(xdrsp, &bool))
309: return (0);
310: }
311: return (1);
312: }
313:
314: /*
315: * Xdr routine to retrieve exports list
316: */
317: int
1.13 deraadt 318: xdr_exports(XDR *xdrsp, struct exportslist **exp)
1.1 deraadt 319: {
320: struct exportslist *ep;
321: struct grouplist *gp;
322: int bool, grpbool;
323: char *strp;
324:
325: *exp = (struct exportslist *)0;
326: if (!xdr_bool(xdrsp, &bool))
327: return (0);
328: while (bool) {
329: ep = (struct exportslist *)malloc(sizeof(struct exportslist));
330: if (ep == NULL)
331: return (0);
332: ep->ex_groups = (struct grouplist *)0;
333: strp = ep->ex_dirp;
334: if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN))
335: return (0);
336: if (!xdr_bool(xdrsp, &grpbool))
337: return (0);
338: while (grpbool) {
1.6 deraadt 339: gp = (struct grouplist *)malloc(
340: sizeof(struct grouplist));
1.1 deraadt 341: if (gp == NULL)
342: return (0);
343: strp = gp->gr_name;
344: if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN))
345: return (0);
346: gp->gr_next = ep->ex_groups;
347: ep->ex_groups = gp;
348: if (!xdr_bool(xdrsp, &grpbool))
349: return (0);
350: }
351: ep->ex_next = *exp;
352: *exp = ep;
353: if (!xdr_bool(xdrsp, &bool))
354: return (0);
355: }
356: return (1);
357: }
358:
359: void
1.13 deraadt 360: usage(void)
1.1 deraadt 361: {
362:
1.3 deraadt 363: fprintf(stderr, "usage: showmount [-ade3] host\n");
1.1 deraadt 364: exit(1);
365: }
366:
367: /*
368: * Print the binary tree in inorder so that output is sorted.
369: */
370: void
1.13 deraadt 371: print_dump(struct mountlist *mp)
1.1 deraadt 372: {
1.5 deraadt 373: char vn[(RPCMNT_NAMELEN+1)*4];
374: char vp[(RPCMNT_PATHLEN+1)*4];
1.1 deraadt 375:
376: if (mp == NULL)
377: return;
378: if (mp->ml_left)
379: print_dump(mp->ml_left);
380: switch (type) {
381: case ALL:
1.5 deraadt 382: strvis(vn, mp->ml_host, VIS_CSTYLE);
383: strvis(vp, mp->ml_dirp, VIS_CSTYLE);
384: printf("%s:%s\n", vn, vp);
1.1 deraadt 385: break;
386: case DIRS:
1.5 deraadt 387: strvis(vp, mp->ml_dirp, VIS_CSTYLE);
388: printf("%s\n", vp);
1.1 deraadt 389: break;
390: default:
1.5 deraadt 391: strvis(vn, mp->ml_host, VIS_CSTYLE);
392: printf("%s\n", vn);
1.1 deraadt 393: break;
1.9 deraadt 394: }
1.1 deraadt 395: if (mp->ml_right)
396: print_dump(mp->ml_right);
397: }