Remove some unnecessary casts.
[dragonfly.git] / usr.bin / ypwhich / ypwhich.c
1 /*
2  * Copyright (c) 1992/3 Theo de Raadt <deraadt@fsa.ca>
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. The name of the author may not be used to endorse or promote
14  *    products derived from this software without specific prior written
15  *    permission.
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  * $FreeBSD: src/usr.bin/ypwhich/ypwhich.c,v 1.11.2.1 2002/02/15 00:46:56 des Exp $
30  * $DragonFly: src/usr.bin/ypwhich/ypwhich.c,v 1.3 2003/10/04 20:36:55 hmp Exp $
31  */
32
33 #include <sys/param.h>
34 #include <sys/types.h>
35 #include <sys/socket.h>
36 #include <netinet/in.h>
37 #include <arpa/inet.h>
38 #include <ctype.h>
39 #include <err.h>
40 #include <netdb.h>
41 #include <stdio.h>
42 #include <stdlib.h>
43 #include <string.h>
44 #include <unistd.h>
45 #include <rpc/rpc.h>
46 #include <rpc/xdr.h>
47 #include <rpcsvc/yp.h>
48 struct dom_binding{};
49 #include <rpcsvc/ypclnt.h>
50
51 #define ERR_USAGE       1       /* bad arguments - display 'usage' message */
52 #define ERR_NOSUCHHOST  2       /* no such host */
53 #define ERR_NOBINDING   3       /* error from ypbind -- domain not bound */
54 #define ERR_NOYPBIND    4       /* ypbind not running */
55 #define ERR_NOMASTER    5       /* could not find master server */
56
57 extern bool_t xdr_domainname();
58
59 struct ypalias {
60         char *alias, *name;
61 } ypaliases[] = {
62         { "passwd", "passwd.byname" },
63         { "master.passwd", "master.passwd.byname" },
64         { "group", "group.byname" },
65         { "networks", "networks.byaddr" },
66         { "hosts", "hosts.byaddr" },
67         { "protocols", "protocols.bynumber" },
68         { "services", "services.byname" },
69         { "aliases", "mail.aliases" },
70         { "ethers", "ethers.byname" },
71 };
72
73 static void
74 usage(void)
75 {
76         fprintf(stderr, "%s\n%s\n",
77                 "usage: ypwhich [-d domain] [[-t] -m [mname] | host]",
78                 "       ypwhich -x");
79         exit(ERR_USAGE);
80 }
81
82
83 /*
84  * Like yp_bind except can query a specific host
85  */
86 int
87 bind_host(char *dom, struct sockaddr_in *sin)
88 {
89         struct hostent *hent = NULL;
90         struct ypbind_resp ypbr;
91         struct timeval tv;
92         CLIENT *client;
93         int sock, r;
94         struct in_addr ss_addr;
95
96         sock = RPC_ANYSOCK;
97         tv.tv_sec = 15;
98         tv.tv_usec = 0;
99         client = clntudp_create(sin, YPBINDPROG, YPBINDVERS, tv, &sock);
100         if (client == NULL) {
101                 warnx("can't clntudp_create: %s", yperr_string(YPERR_YPBIND));
102                 return (YPERR_YPBIND);
103         }
104
105         tv.tv_sec = 5;
106         tv.tv_usec = 0;
107         r = clnt_call(client, YPBINDPROC_DOMAIN,
108                 xdr_domainname, &dom, xdr_ypbind_resp, &ypbr, tv);
109         if (r != RPC_SUCCESS) {
110                 warnx("can't clnt_call: %s", yperr_string(YPERR_YPBIND));
111                 clnt_destroy(client);
112                 return (YPERR_YPBIND);
113         } else {
114                 if (ypbr.ypbind_status != YPBIND_SUCC_VAL) {
115                         warnx("can't yp_bind: reason: %s",
116                                 ypbinderr_string(ypbr.ypbind_resp_u.ypbind_error));
117                         clnt_destroy(client);
118                         return (r);
119                 }
120         }
121         clnt_destroy(client);
122
123         ss_addr = *(struct in_addr *)ypbr.ypbind_resp_u.ypbind_bindinfo.ypbind_binding_addr;
124         /*printf("%08x\n", ss_addr);*/
125         hent = gethostbyaddr(&ss_addr, sizeof(ss_addr), AF_INET);
126         if (hent)
127                 printf("%s\n", hent->h_name);
128         else
129                 printf("%s\n", inet_ntoa(ss_addr));
130         return (0);
131 }
132
133 int
134 main(int argc, char **argv)
135 {
136         char *domainname = NULL, *master, *map = NULL;
137         struct ypmaplist *ypml, *y;
138         struct hostent *hent;
139         struct sockaddr_in sin;
140         int notrans, mode, getmap;
141         int c, r, i;
142
143         getmap = notrans = mode = 0;
144         while ((c = getopt(argc, argv, "xd:mt")) != -1)
145                 switch (c) {
146                 case 'x':
147                         for (i = 0; i<sizeof ypaliases/sizeof ypaliases[0]; i++)
148                                 printf("\"%s\" is an alias for \"%s\"\n",
149                                         ypaliases[i].alias,
150                                         ypaliases[i].name);
151                         exit(0);
152                 case 'd':
153                         domainname = optarg;
154                         break;
155                 case 't':
156                         notrans++;
157                         break;
158                 case 'm':
159                         mode++;
160                         break;
161                 default:
162                         usage();
163                 }
164
165         if (!domainname)
166                 yp_get_default_domain(&domainname);
167
168         if (mode == 0) {
169                 switch (argc-optind) {
170                 case 0:
171                         bzero(&sin, sizeof sin);
172                         sin.sin_family = AF_INET;
173                         sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
174
175                         if (bind_host(domainname, &sin))
176                                 exit(ERR_NOBINDING);
177                         break;
178                 case 1:
179                         bzero(&sin, sizeof sin);
180                         sin.sin_family = AF_INET;
181                         if ((sin.sin_addr.s_addr = inet_addr(argv[optind])) == -1) {
182                                 hent = gethostbyname(argv[optind]);
183                                 if (!hent)
184                                         errx(ERR_NOSUCHHOST, "host %s unknown", argv[optind]);
185                                 bcopy((char *)hent->h_addr_list[0],
186                                         (char *)&sin.sin_addr, sizeof sin.sin_addr);
187                         }
188                         if (bind_host(domainname, &sin))
189                                 exit(ERR_NOBINDING);
190                         break;
191                 default:
192                         usage();
193                 }
194                 exit(0);
195         }
196
197         if (argc-optind > 1)
198                 usage();
199
200         if (argv[optind]) {
201                 map = argv[optind];
202                 for (i = 0; (!notrans) && i<sizeof ypaliases/sizeof ypaliases[0]; i++)
203                         if (strcmp(map, ypaliases[i].alias) == 0)
204                                 map = ypaliases[i].name;
205                 r = yp_master(domainname, map, &master);
206                 switch (r) {
207                 case 0:
208                         printf("%s\n", master);
209                         free(master);
210                         break;
211                 case YPERR_YPBIND:
212                         errx(ERR_NOYPBIND, "not running ypbind");
213                 default:
214                         errx(ERR_NOMASTER, "can't find master for map %s. reason: %s",
215                                 map, yperr_string(r));
216                 }
217                 exit(0);
218         }
219
220         ypml = NULL;
221         r = yp_maplist(domainname, &ypml);
222         switch (r) {
223         case 0:
224                 for (y = ypml; y;) {
225                         ypml = y;
226                         r = yp_master(domainname, ypml->map, &master);
227                         switch (r) {
228                         case 0:
229                                 printf("%s %s\n", ypml->map, master);
230                                 free(master);
231                                 break;
232                         default:
233                                 warnx("can't find the master of %s: reason: %s",
234                                         ypml->map, yperr_string(r));
235                                 break;
236                         }
237                         y = ypml->next;
238                         free(ypml);
239                 }
240                 break;
241         case YPERR_YPBIND:
242                 errx(ERR_NOYPBIND, "not running ypbind");
243         default:
244                 errx(ERR_NOMASTER, "can't get map list for domain %s. reason: %s",
245                         domainname, yperr_string(r));
246         }
247         exit(0);
248 }