Annotation of src/usr.bin/ypwhich/ypwhich.c, Revision 1.20
1.20 ! deraadt 1: /* $OpenBSD: ypwhich.c,v 1.19 2007/04/02 15:34:39 jmc Exp $ */
1.3 deraadt 2: /* $NetBSD: ypwhich.c,v 1.6 1996/05/13 02:43:48 thorpej Exp $ */
3:
1.1 deraadt 4: /*
1.3 deraadt 5: * Copyright (c) 1992, 1993 Theo de Raadt <deraadt@theos.com>
1.1 deraadt 6: * All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: *
17: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
18: * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
21: * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27: * SUCH DAMAGE.
28: */
29:
30: #include <sys/param.h>
31: #include <sys/types.h>
32: #include <sys/socket.h>
1.8 deraadt 33:
34: #include <sys/socket.h>
35: #include <netinet/in.h>
36: #include <arpa/inet.h>
37:
1.1 deraadt 38: #include <stdio.h>
1.8 deraadt 39: #include <string.h>
1.1 deraadt 40: #include <stdlib.h>
41: #include <ctype.h>
42: #include <netdb.h>
1.8 deraadt 43: #include <err.h>
44:
1.1 deraadt 45: #include <rpc/rpc.h>
46: #include <rpc/xdr.h>
1.2 deraadt 47: #include <rpcsvc/yp.h>
1.1 deraadt 48: #include <rpcsvc/ypclnt.h>
49:
1.11 maja 50: #include "yplib_host.h"
51:
1.1 deraadt 52: struct ypalias {
53: char *alias, *name;
54: } ypaliases[] = {
55: { "passwd", "passwd.byname" },
56: { "group", "group.byname" },
57: { "networks", "networks.byaddr" },
58: { "hosts", "hosts.byaddr" },
59: { "protocols", "protocols.bynumber" },
60: { "services", "services.byname" },
61: { "aliases", "mail.aliases" },
62: { "ethers", "ethers.byname" },
63: };
64:
1.16 deraadt 65: int bind_host(char *dom, struct sockaddr_in *sin);
66:
67: static void
1.13 deraadt 68: usage(void)
1.1 deraadt 69: {
1.13 deraadt 70: fprintf(stderr,
1.19 jmc 71: "usage: ypwhich [-t] [-d domain] [[-h] host]\n"
72: " ypwhich [-t] [-d domain] [-h host] -m [mname]\n"
73: " ypwhich -x\n");
1.1 deraadt 74: exit(1);
75: }
76:
77:
78: /*
79: * Like yp_bind except can query a specific host
80: */
1.8 deraadt 81: int
1.13 deraadt 82: bind_host(char *dom, struct sockaddr_in *sin)
1.1 deraadt 83: {
84: struct hostent *hent = NULL;
85: struct ypbind_resp ypbr;
1.13 deraadt 86: struct in_addr ss_addr;
1.1 deraadt 87: struct timeval tv;
88: CLIENT *client;
89: int sock, r;
90:
91: sock = RPC_ANYSOCK;
92: tv.tv_sec = 15;
93: tv.tv_usec = 0;
94: client = clntudp_create(sin, YPBINDPROG, YPBINDVERS, tv, &sock);
1.6 gene 95:
96: if (client == NULL) {
97: fprintf(stderr, "ypwhich: host is not bound to a ypmaster\n");
1.1 deraadt 98: return YPERR_YPBIND;
99: }
100:
101: tv.tv_sec = 5;
102: tv.tv_usec = 0;
1.6 gene 103:
1.1 deraadt 104: r = clnt_call(client, YPBINDPROC_DOMAIN,
1.5 deraadt 105: xdr_domainname, &dom, xdr_ypbind_resp, &ypbr, tv);
106: if (r != RPC_SUCCESS) {
1.1 deraadt 107: fprintf(stderr, "can't clnt_call: %s\n",
1.5 deraadt 108: yperr_string(YPERR_YPBIND));
1.1 deraadt 109: clnt_destroy(client);
110: return YPERR_YPBIND;
111: } else {
112: if (ypbr.ypbind_status != YPBIND_SUCC_VAL) {
113: fprintf(stderr, "can't yp_bind: Reason: %s\n",
1.5 deraadt 114: yperr_string(ypbr.ypbind_status));
1.1 deraadt 115: clnt_destroy(client);
116: return r;
117: }
118: }
119: clnt_destroy(client);
120:
1.8 deraadt 121: memmove(&ss_addr.s_addr, &ypbr.ypbind_resp_u.ypbind_bindinfo.ypbind_binding_addr,
122: sizeof (ss_addr));
1.6 gene 123:
1.8 deraadt 124: hent = gethostbyaddr((char *)&ss_addr.s_addr, sizeof(ss_addr.s_addr),
125: AF_INET);
1.6 gene 126: if (hent != NULL)
1.1 deraadt 127: printf("%s\n", hent->h_name);
128: else
129: printf("%s\n", inet_ntoa(ss_addr));
1.6 gene 130:
1.1 deraadt 131: return 0;
132: }
1.13 deraadt 133:
1.1 deraadt 134: int
1.13 deraadt 135: main(int argc, char *argv[])
1.1 deraadt 136: {
1.13 deraadt 137: char *domain, *master, *map = NULL, *host = NULL;
1.18 deraadt 138: int notrans = 0, mode = 0, c, r, i;
1.1 deraadt 139: struct ypmaplist *ypml, *y;
1.13 deraadt 140: struct sockaddr_in sin;
1.1 deraadt 141: struct hostent *hent;
1.13 deraadt 142: CLIENT *client = NULL;
1.1 deraadt 143:
1.6 gene 144: yp_get_default_domain(&domain);
1.8 deraadt 145: if (domain == NULL)
146: errx(1, "YP domain name not set");
147:
1.11 maja 148: while ((c = getopt(argc, argv, "xd:h:mt")) != -1)
1.12 deraadt 149: switch (c) {
1.1 deraadt 150: case 'x':
1.5 deraadt 151: for (i=0; i<sizeof ypaliases/sizeof ypaliases[0]; i++)
1.1 deraadt 152: printf("Use \"%s\" for \"%s\"\n",
1.5 deraadt 153: ypaliases[i].alias, ypaliases[i].name);
1.1 deraadt 154: exit(0);
1.11 maja 155: case 'h':
156: host = optarg;
157: break;
1.1 deraadt 158: case 'd':
1.2 deraadt 159: domain = optarg;
1.1 deraadt 160: break;
161: case 't':
162: notrans++;
163: break;
164: case 'm':
165: mode++;
166: break;
167: default:
168: usage();
169: }
170: argc -= optind;
171: argv += optind;
172:
1.6 gene 173: if (mode == 0) {
1.12 deraadt 174: switch (argc) {
1.1 deraadt 175: case 0:
1.8 deraadt 176: memset(&sin, 0, sizeof sin);
1.1 deraadt 177: sin.sin_family = AF_INET;
178: sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
179:
1.5 deraadt 180: if (bind_host(domain, &sin))
1.1 deraadt 181: exit(1);
182: break;
183: case 1:
184: bzero(&sin, sizeof sin);
185: sin.sin_family = AF_INET;
186: if (inet_aton(argv[0], &sin.sin_addr) == 0) {
187: hent = gethostbyname(argv[0]);
1.5 deraadt 188: if (!hent) {
1.1 deraadt 189: fprintf(stderr, "ypwhich: host %s unknown\n",
190: argv[0]);
191: exit(1);
192: }
1.18 deraadt 193: bcopy(hent->h_addr, &sin.sin_addr,
194: sizeof sin.sin_addr);
1.1 deraadt 195: }
1.5 deraadt 196: if (bind_host(domain, &sin))
1.1 deraadt 197: exit(1);
198: break;
199: default:
200: usage();
201: }
202: exit(0);
203: }
204:
1.5 deraadt 205: if (argc > 1)
1.1 deraadt 206: usage();
207:
1.13 deraadt 208: if (host != NULL)
1.14 deraadt 209: client = yp_bind_host(host, YPPROG, YPVERS, 0, 1);
1.13 deraadt 210:
1.5 deraadt 211: if (argv[0]) {
1.1 deraadt 212: map = argv[0];
1.5 deraadt 213: for (i=0; (!notrans) && i<sizeof ypaliases/sizeof ypaliases[0]; i++)
214: if (strcmp(map, ypaliases[i].alias) == 0)
1.1 deraadt 215: map = ypaliases[i].name;
1.6 gene 216:
1.13 deraadt 217: if (host != NULL)
1.11 maja 218: r = yp_master_host(client, domain, map, &master);
1.13 deraadt 219: else
1.11 maja 220: r = yp_master(domain, map, &master);
1.13 deraadt 221:
1.5 deraadt 222: switch (r) {
1.1 deraadt 223: case 0:
224: printf("%s\n", master);
225: free(master);
226: break;
227: case YPERR_YPBIND:
228: fprintf(stderr, "ypwhich: not running ypbind\n");
229: exit(1);
230: default:
231: fprintf(stderr, "Can't find master for map %s. Reason: %s\n",
1.5 deraadt 232: map, yperr_string(r));
1.1 deraadt 233: exit(1);
234: }
235: exit(0);
236: }
237:
238: ypml = NULL;
1.13 deraadt 239: if (host != NULL)
1.11 maja 240: r = yp_maplist_host(client, domain, &ypml);
1.13 deraadt 241: else
1.11 maja 242: r = yp_maplist(domain, &ypml);
1.13 deraadt 243:
1.2 deraadt 244: r = 0;
1.12 deraadt 245: switch (r) {
1.1 deraadt 246: case 0:
1.5 deraadt 247: for (y = ypml; y; ) {
1.1 deraadt 248: ypml = y;
1.11 maja 249: if (host != NULL) {
250: r = yp_master_host(client,
251: domain, ypml->map, &master);
252: } else {
253: r = yp_master(domain, ypml->map, &master);
254: }
1.12 deraadt 255: switch (r) {
1.1 deraadt 256: case 0:
1.2 deraadt 257: printf("%s %s\n", ypml->map, master);
1.1 deraadt 258: free(master);
259: break;
260: default:
261: fprintf(stderr,
1.5 deraadt 262: "YP: can't find the master of %s: Reason: %s\n",
263: ypml->map, yperr_string(r));
1.1 deraadt 264: break;
265: }
1.2 deraadt 266: y = ypml->next;
1.1 deraadt 267: free(ypml);
268: }
269: break;
270: case YPERR_YPBIND:
271: fprintf(stderr, "ypwhich: not running ypbind\n");
272: exit(1);
273: default:
274: fprintf(stderr, "Can't get map list for domain %s. Reason: %s\n",
1.5 deraadt 275: domain, yperr_string(r));
1.1 deraadt 276: exit(1);
277: }
278: exit(0);
279: }
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