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1.17 ! deraadt 1: /* $OpenBSD: showmount.c,v 1.16 2007/03/29 11:27:33 jmc 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: #include <sys/types.h>
37: #include <sys/file.h>
38: #include <sys/socket.h>
39: #include <sys/socketvar.h>
40:
41: #include <netdb.h>
42: #include <rpc/rpc.h>
43: #include <rpc/pmap_clnt.h>
44: #include <rpc/pmap_prot.h>
45: #include <nfs/rpcv2.h>
46:
47: #include <stdio.h>
48: #include <stdlib.h>
49: #include <string.h>
50: #include <unistd.h>
1.5 deraadt 51: #include <vis.h>
1.1 deraadt 52:
53: /* Constant defs */
54: #define ALL 1
55: #define DIRS 2
56:
57: #define DODUMP 0x1
58: #define DOEXPORTS 0x2
59:
60: struct mountlist {
61: struct mountlist *ml_left;
62: struct mountlist *ml_right;
63: char ml_host[RPCMNT_NAMELEN+1];
64: char ml_dirp[RPCMNT_PATHLEN+1];
65: };
66:
67: struct grouplist {
68: struct grouplist *gr_next;
69: char gr_name[RPCMNT_NAMELEN+1];
70: };
71:
72: struct exportslist {
73: struct exportslist *ex_next;
74: struct grouplist *ex_groups;
75: char ex_dirp[RPCMNT_PATHLEN+1];
76: };
77:
78: static struct mountlist *mntdump;
79: static struct exportslist *exports;
80: static int type = 0;
81:
1.10 millert 82: void print_dump(struct mountlist *);
83: void usage(void);
84: int xdr_mntdump(XDR *, struct mountlist **);
85: int xdr_exports(XDR *, struct exportslist **);
1.1 deraadt 86:
87: /*
88: * This command queries the NFS mount daemon for it's mount list and/or
89: * it's exports list and prints them out.
90: * See "NFS: Network File System Protocol Specification, RFC1094, Appendix A"
91: * and the "Network File System Protocol XXX.."
92: * for detailed information on the protocol.
93: */
94: int
1.13 deraadt 95: main(int argc, char *argv[])
1.1 deraadt 96: {
97: struct exportslist *exp;
98: struct grouplist *grp;
1.6 deraadt 99: struct sockaddr_in clnt_sin;
100: struct hostent *hp;
101: struct timeval timeout;
102: int rpcs = 0, mntvers = 1;
103: enum clnt_stat estat;
104: CLIENT *client;
1.2 deraadt 105: char *host;
1.6 deraadt 106: int ch, clnt_sock;
1.1 deraadt 107:
1.2 deraadt 108: while ((ch = getopt(argc, argv, "ade3")) != -1)
1.14 deraadt 109: switch (ch) {
1.1 deraadt 110: case 'a':
111: if (type == 0) {
112: type = ALL;
113: rpcs |= DODUMP;
114: } else
115: usage();
116: break;
117: case 'd':
118: if (type == 0) {
119: type = DIRS;
120: rpcs |= DODUMP;
121: } else
122: usage();
123: break;
124: case 'e':
125: rpcs |= DOEXPORTS;
126: break;
127: case '3':
128: mntvers = 3;
129: break;
130: default:
131: usage();
132: }
133: argc -= optind;
134: argv += optind;
135:
136: if (argc > 0)
137: host = *argv;
138: else
139: host = "localhost";
140:
141: if (rpcs == 0)
142: rpcs = DODUMP;
143:
1.6 deraadt 144: if ((hp = gethostbyname(host)) == NULL) {
145: fprintf(stderr, "showmount: unknown host %s\n", host);
146: exit(1);
147: }
148: bzero(&clnt_sin, sizeof clnt_sin);
149: clnt_sin.sin_len = sizeof clnt_sin;
150: clnt_sin.sin_family = AF_INET;
151: bcopy(hp->h_addr, (char *)&clnt_sin.sin_addr, hp->h_length);
152: clnt_sock = RPC_ANYSOCK;
153: client = clnttcp_create(&clnt_sin, RPCPROG_MNT, mntvers,
154: &clnt_sock, 0, 0);
155: if (client == NULL) {
156: clnt_pcreateerror("showmount: clnttcp_create");
157: exit(1);
158: }
159: timeout.tv_sec = 30;
160: timeout.tv_usec = 0;
161:
162: if (rpcs & DODUMP) {
163: estat = clnt_call(client, RPCMNT_DUMP, xdr_void, (char *)0,
164: xdr_mntdump, (char *)&mntdump, timeout);
165: if (estat != RPC_SUCCESS) {
1.3 deraadt 166: fprintf(stderr, "showmount: Can't do Mountdump rpc: ");
1.1 deraadt 167: clnt_perrno(estat);
168: exit(1);
169: }
1.6 deraadt 170: }
171: if (rpcs & DOEXPORTS) {
172: estat = clnt_call(client, RPCMNT_EXPORT, xdr_void, (char *)0,
173: xdr_exports, (char *)&exports, timeout);
174: if (estat != RPC_SUCCESS) {
1.3 deraadt 175: fprintf(stderr, "showmount: Can't do Exports rpc: ");
1.1 deraadt 176: clnt_perrno(estat);
177: exit(1);
178: }
1.6 deraadt 179: }
1.1 deraadt 180:
181: /* Now just print out the results */
182: if (rpcs & DODUMP) {
183: switch (type) {
184: case ALL:
185: printf("All mount points on %s:\n", host);
186: break;
187: case DIRS:
188: printf("Directories on %s:\n", host);
189: break;
190: default:
191: printf("Hosts on %s:\n", host);
192: break;
1.9 deraadt 193: }
1.1 deraadt 194: print_dump(mntdump);
195: }
196: if (rpcs & DOEXPORTS) {
1.5 deraadt 197: char vp[(RPCMNT_PATHLEN+1)*4];
198: char vn[(RPCMNT_NAMELEN+1)*4];
199:
1.1 deraadt 200: printf("Exports list on %s:\n", host);
201: exp = exports;
202: while (exp) {
1.11 vincent 203: strnvis(vp, exp->ex_dirp, sizeof vp, VIS_CSTYLE);
1.15 deraadt 204: printf("%-34s ", vp);
1.1 deraadt 205: grp = exp->ex_groups;
206: if (grp == NULL) {
207: printf("Everyone\n");
208: } else {
209: while (grp) {
1.11 vincent 210: strnvis(vn, grp->gr_name, sizeof vn,
211: VIS_CSTYLE);
1.5 deraadt 212: printf("%s ", vn);
1.1 deraadt 213: grp = grp->gr_next;
214: }
215: printf("\n");
216: }
217: exp = exp->ex_next;
218: }
219: }
220:
221: exit(0);
222: }
223:
224: /*
225: * Xdr routine for retrieving the mount dump list
226: */
227: int
1.13 deraadt 228: xdr_mntdump(XDR *xdrsp, struct mountlist **mlp)
1.1 deraadt 229: {
1.7 deraadt 230: struct mountlist *mp, **otp = NULL, *tp;
1.1 deraadt 231: int bool, val, val2;
232: char *strp;
233:
234: *mlp = (struct mountlist *)0;
235: if (!xdr_bool(xdrsp, &bool))
236: return (0);
237: while (bool) {
238: mp = (struct mountlist *)malloc(sizeof(struct mountlist));
239: if (mp == NULL)
240: return (0);
241: mp->ml_left = mp->ml_right = (struct mountlist *)0;
242: strp = mp->ml_host;
243: if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN))
244: return (0);
245: strp = mp->ml_dirp;
246: if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN))
247: return (0);
248:
249: /*
250: * Build a binary tree on sorted order of either host or dirp.
251: * Drop any duplications.
252: */
253: if (*mlp == NULL) {
254: *mlp = mp;
255: } else {
256: tp = *mlp;
257: while (tp) {
258: val = strcmp(mp->ml_host, tp->ml_host);
259: val2 = strcmp(mp->ml_dirp, tp->ml_dirp);
260: switch (type) {
261: case ALL:
262: if (val == 0) {
263: if (val2 == 0) {
264: free((caddr_t)mp);
265: goto next;
266: }
267: val = val2;
268: }
269: break;
270: case DIRS:
271: if (val2 == 0) {
272: free((caddr_t)mp);
273: goto next;
274: }
275: val = val2;
276: break;
277: default:
278: if (val == 0) {
279: free((caddr_t)mp);
280: goto next;
281: }
282: break;
1.7 deraadt 283: }
1.1 deraadt 284: if (val < 0) {
285: otp = &tp->ml_left;
286: tp = tp->ml_left;
287: } else {
288: otp = &tp->ml_right;
289: tp = tp->ml_right;
290: }
291: }
292: *otp = mp;
293: }
294: next:
295: if (!xdr_bool(xdrsp, &bool))
296: return (0);
297: }
298: return (1);
299: }
300:
301: /*
302: * Xdr routine to retrieve exports list
303: */
304: int
1.13 deraadt 305: xdr_exports(XDR *xdrsp, struct exportslist **exp)
1.1 deraadt 306: {
307: struct exportslist *ep;
308: struct grouplist *gp;
309: int bool, grpbool;
310: char *strp;
311:
312: *exp = (struct exportslist *)0;
313: if (!xdr_bool(xdrsp, &bool))
314: return (0);
315: while (bool) {
316: ep = (struct exportslist *)malloc(sizeof(struct exportslist));
317: if (ep == NULL)
318: return (0);
319: ep->ex_groups = (struct grouplist *)0;
320: strp = ep->ex_dirp;
321: if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN))
322: return (0);
323: if (!xdr_bool(xdrsp, &grpbool))
324: return (0);
325: while (grpbool) {
1.6 deraadt 326: gp = (struct grouplist *)malloc(
327: sizeof(struct grouplist));
1.1 deraadt 328: if (gp == NULL)
329: return (0);
330: strp = gp->gr_name;
331: if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN))
332: return (0);
333: gp->gr_next = ep->ex_groups;
334: ep->ex_groups = gp;
335: if (!xdr_bool(xdrsp, &grpbool))
336: return (0);
337: }
338: ep->ex_next = *exp;
339: *exp = ep;
340: if (!xdr_bool(xdrsp, &bool))
341: return (0);
342: }
343: return (1);
344: }
345:
346: void
1.13 deraadt 347: usage(void)
1.1 deraadt 348: {
349:
1.16 jmc 350: fprintf(stderr, "usage: showmount [-3ade] [host]\n");
1.1 deraadt 351: exit(1);
352: }
353:
354: /*
355: * Print the binary tree in inorder so that output is sorted.
356: */
357: void
1.13 deraadt 358: print_dump(struct mountlist *mp)
1.1 deraadt 359: {
1.5 deraadt 360: char vn[(RPCMNT_NAMELEN+1)*4];
361: char vp[(RPCMNT_PATHLEN+1)*4];
1.1 deraadt 362:
363: if (mp == NULL)
364: return;
365: if (mp->ml_left)
366: print_dump(mp->ml_left);
367: switch (type) {
368: case ALL:
1.5 deraadt 369: strvis(vn, mp->ml_host, VIS_CSTYLE);
370: strvis(vp, mp->ml_dirp, VIS_CSTYLE);
371: printf("%s:%s\n", vn, vp);
1.1 deraadt 372: break;
373: case DIRS:
1.5 deraadt 374: strvis(vp, mp->ml_dirp, VIS_CSTYLE);
375: printf("%s\n", vp);
1.1 deraadt 376: break;
377: default:
1.5 deraadt 378: strvis(vn, mp->ml_host, VIS_CSTYLE);
379: printf("%s\n", vn);
1.1 deraadt 380: break;
1.9 deraadt 381: }
1.1 deraadt 382: if (mp->ml_right)
383: print_dump(mp->ml_right);
384: }