1 /* $NetBSD: yplib_host.c,v 1.9 2011/08/30 17:06:22 plunky Exp $ */
2
3 /*
4 * Copyright (c) 1992, 1993 Theo de Raadt <deraadt@theos.com>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
17 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
30 #ifndef lint
31 __RCSID("$NetBSD: yplib_host.c,v 1.9 2011/08/30 17:06:22 plunky Exp $");
32 #endif
33
34 #include <sys/param.h>
35 #include <sys/types.h>
36 #include <sys/socket.h>
37 #include <sys/file.h>
38 #include <sys/uio.h>
39
40 #include <netinet/in.h>
41 #include <arpa/inet.h>
42
43 #include <ctype.h>
44 #include <err.h>
45 #include <errno.h>
46 #include <stdio.h>
47 #include <stdlib.h>
48 #include <string.h>
49 #include <netdb.h>
50 #include <unistd.h>
51
52 #include <rpc/rpc.h>
53 #include <rpc/xdr.h>
54 #include <rpcsvc/yp_prot.h>
55 #include <rpcsvc/ypclnt.h>
56
57 #include "yplib_host.h"
58
59 struct timeval _yplib_host_timeout = { 10, 0 };
60
61 CLIENT *
yp_bind_host(char * server,u_int program,u_int version,u_short port,int usetcp)62 yp_bind_host(char *server, u_int program, u_int version, u_short port,
63 int usetcp)
64 {
65 struct sockaddr_in rsrv_sin;
66 int rsrv_sock;
67 struct hostent *h;
68 static CLIENT *client;
69
70 memset(&rsrv_sin, 0, sizeof rsrv_sin);
71 rsrv_sin.sin_len = sizeof rsrv_sin;
72 rsrv_sin.sin_family = AF_INET;
73 rsrv_sock = RPC_ANYSOCK;
74 if (port != 0) {
75 rsrv_sin.sin_port = htons(port);
76 }
77
78 if (isdigit((unsigned char)*server)) {
79 if (inet_aton(server,&rsrv_sin.sin_addr) == 0) {
80 errx(1, "invalid IP address `%s'", server);
81 }
82 } else {
83 h = gethostbyname(server);
84 if(h == NULL) {
85 errx(1, "unknown host `%s'", server);
86 }
87 memcpy(&rsrv_sin.sin_addr.s_addr, h->h_addr_list[0],
88 h->h_length);
89 }
90
91 if (usetcp)
92 client = clnttcp_create(&rsrv_sin, program, version,
93 &rsrv_sock, 0, 0);
94 else
95 client = clntudp_create(&rsrv_sin, program, version,
96 _yplib_host_timeout, &rsrv_sock);
97
98 if (client == NULL)
99 errx(1, "%s: no contact with host `%s'",
100 usetcp ? "clnttcp_create" : "clntudp_create", server);
101
102 return(client);
103 }
104
105 CLIENT *
yp_bind_local(u_int program,u_int version)106 yp_bind_local(u_int program, u_int version)
107 {
108 struct sockaddr_in rsrv_sin;
109 int rsrv_sock;
110 static CLIENT *client;
111
112 memset(&rsrv_sin, 0, sizeof rsrv_sin);
113 rsrv_sin.sin_len = sizeof rsrv_sin;
114 rsrv_sin.sin_family = AF_INET;
115 rsrv_sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
116 rsrv_sock = RPC_ANYSOCK;
117
118 client = clntudp_create(&rsrv_sin, program, version,
119 _yplib_host_timeout, &rsrv_sock);
120 if (client == NULL)
121 errx(1, "clntudp_create: no contact with localhost");
122
123 return(client);
124 }
125
126 int
yp_match_host(CLIENT * client,char * indomain,char * inmap,const char * inkey,int inkeylen,char ** outval,int * outvallen)127 yp_match_host(CLIENT *client, char *indomain, char *inmap, const char *inkey,
128 int inkeylen, char **outval, int *outvallen)
129 {
130 struct ypresp_val yprv;
131 struct ypreq_key yprk;
132 int r;
133
134 *outval = NULL;
135 *outvallen = 0;
136
137 yprk.domain = indomain;
138 yprk.map = inmap;
139 yprk.keydat.dptr = __UNCONST(inkey);
140 yprk.keydat.dsize = inkeylen;
141
142 memset(&yprv, 0, sizeof yprv);
143
144 r = clnt_call(client, YPPROC_MATCH, xdr_ypreq_key, &yprk,
145 xdr_ypresp_val, &yprv, _yplib_host_timeout);
146 if(r != RPC_SUCCESS)
147 clnt_perror(client, "yp_match_host: clnt_call");
148
149 if(!(r=ypprot_err(yprv.status)) ) {
150 *outvallen = yprv.valdat.dsize;
151 *outval = (char *)malloc(*outvallen+1);
152 memcpy(*outval, yprv.valdat.dptr, *outvallen);
153 (*outval)[*outvallen] = '\0';
154 }
155 xdr_free((xdrproc_t)xdr_ypresp_val, (char *)&yprv);
156 return r;
157 }
158
159 int
yp_first_host(CLIENT * client,char * indomain,char * inmap,char ** outkey,int * outkeylen,char ** outval,int * outvallen)160 yp_first_host(CLIENT *client, char *indomain, char *inmap, char **outkey,
161 int *outkeylen, char **outval, int *outvallen)
162 {
163 struct ypresp_key_val yprkv;
164 struct ypreq_nokey yprnk;
165 int r;
166
167 *outkey = *outval = NULL;
168 *outkeylen = *outvallen = 0;
169
170 yprnk.domain = indomain;
171 yprnk.map = inmap;
172 memset(&yprkv, 0, sizeof yprkv);
173
174 r = clnt_call(client, YPPROC_FIRST, xdr_ypreq_nokey, &yprnk,
175 xdr_ypresp_key_val, &yprkv, _yplib_host_timeout);
176 if (r != RPC_SUCCESS)
177 clnt_perror(client, "yp_first_host: clnt_call");
178
179 if(!(r=ypprot_err(yprkv.status)) ) {
180 *outkeylen = yprkv.keydat.dsize;
181 *outkey = (char *)malloc(*outkeylen+1);
182 memcpy(*outkey, yprkv.keydat.dptr, *outkeylen);
183 (*outkey)[*outkeylen] = '\0';
184 *outvallen = yprkv.valdat.dsize;
185 *outval = (char *)malloc(*outvallen+1);
186 memcpy(*outval, yprkv.valdat.dptr, *outvallen);
187 (*outval)[*outvallen] = '\0';
188 }
189 xdr_free((xdrproc_t)xdr_ypresp_key_val, (char *)&yprkv);
190 return r;
191 }
192
193 int
yp_next_host(CLIENT * client,char * indomain,char * inmap,char * inkey,int inkeylen,char ** outkey,int * outkeylen,char ** outval,int * outvallen)194 yp_next_host(CLIENT *client, char *indomain, char *inmap, char *inkey,
195 int inkeylen, char **outkey, int *outkeylen, char **outval,
196 int *outvallen)
197 {
198 struct ypresp_key_val yprkv;
199 struct ypreq_key yprk;
200 int r;
201
202 *outkey = *outval = NULL;
203 *outkeylen = *outvallen = 0;
204
205 yprk.domain = indomain;
206 yprk.map = inmap;
207 yprk.keydat.dptr = inkey;
208 yprk.keydat.dsize = inkeylen;
209 memset(&yprkv, 0, sizeof yprkv);
210
211 r = clnt_call(client, YPPROC_NEXT, xdr_ypreq_key, &yprk,
212 xdr_ypresp_key_val, &yprkv, _yplib_host_timeout);
213 if (r != RPC_SUCCESS)
214 clnt_perror(client, "yp_next_host: clnt_call");
215
216 if(!(r=ypprot_err(yprkv.status)) ) {
217 *outkeylen = yprkv.keydat.dsize;
218 *outkey = (char *)malloc(*outkeylen+1);
219 memcpy(*outkey, yprkv.keydat.dptr, *outkeylen);
220 (*outkey)[*outkeylen] = '\0';
221 *outvallen = yprkv.valdat.dsize;
222 *outval = (char *)malloc(*outvallen+1);
223 memcpy(*outval, yprkv.valdat.dptr, *outvallen);
224 (*outval)[*outvallen] = '\0';
225 }
226 xdr_free((xdrproc_t)xdr_ypresp_key_val, (char *)&yprkv);
227 return r;
228 }
229
230 int
yp_all_host(CLIENT * client,const char * indomain,const char * inmap,struct ypall_callback * incallback)231 yp_all_host(CLIENT *client, const char *indomain, const char *inmap,
232 struct ypall_callback *incallback)
233 {
234 struct ypreq_nokey yprnk;
235 int status;
236
237 yprnk.domain = indomain;
238 yprnk.map = inmap;
239
240 status = clnt_call(client, YPPROC_ALL, xdr_ypreq_nokey, &yprnk,
241 xdr_ypall, (char *)incallback, _yplib_host_timeout);
242
243 if (status != RPC_SUCCESS)
244 return YPERR_RPC;
245
246 return 0;
247 }
248
249 int
yp_order_host(CLIENT * client,char * indomain,char * inmap,int * outorder)250 yp_order_host(CLIENT *client, char *indomain, char *inmap, int *outorder)
251 {
252 struct ypresp_order ypro;
253 struct ypreq_nokey yprnk;
254 int r;
255
256 yprnk.domain = indomain;
257 yprnk.map = inmap;
258
259 memset(&ypro, 0, sizeof ypro);
260
261 r = clnt_call(client, YPPROC_ORDER, xdr_ypreq_nokey, &yprnk,
262 xdr_ypresp_order, &ypro, _yplib_host_timeout);
263 if (r != RPC_SUCCESS)
264 clnt_perror(client, "yp_order_host: clnt_call");
265
266 *outorder = ypro.ordernum;
267 xdr_free((xdrproc_t)xdr_ypresp_order, (char *)&ypro);
268 return ypprot_err(ypro.status);
269 }
270
271 int
yp_master_host(CLIENT * client,char * indomain,char * inmap,char ** outname)272 yp_master_host(CLIENT *client, char *indomain, char *inmap, char **outname)
273 {
274 struct ypresp_master yprm;
275 struct ypreq_nokey yprnk;
276 int r;
277
278 yprnk.domain = indomain;
279 yprnk.map = inmap;
280
281 memset(&yprm, 0, sizeof yprm);
282
283 r = clnt_call(client, YPPROC_MASTER, xdr_ypreq_nokey, &yprnk,
284 xdr_ypresp_master, &yprm, _yplib_host_timeout);
285 if (r != RPC_SUCCESS)
286 clnt_perror(client, "yp_master: clnt_call");
287
288 if (!(r = ypprot_err(yprm.status))) {
289 *outname = (char *)strdup(yprm.master);
290 }
291 xdr_free((xdrproc_t)xdr_ypresp_master, (char *)&yprm);
292 return r;
293 }
294
295 int
yp_maplist_host(CLIENT * client,char * indomain,struct ypmaplist ** outmaplist)296 yp_maplist_host(CLIENT *client, char *indomain, struct ypmaplist **outmaplist)
297 {
298 struct ypresp_maplist ypml;
299 int r;
300
301 memset(&ypml, 0, sizeof ypml);
302
303 r = clnt_call(client, YPPROC_MAPLIST, xdr_ypdomain_wrap_string,
304 indomain, xdr_ypresp_maplist, &ypml, _yplib_host_timeout);
305 if (r != RPC_SUCCESS)
306 clnt_perror(client, "yp_maplist: clnt_call");
307
308 *outmaplist = ypml.list;
309 /* NO: xdr_free(xdr_ypresp_maplist, &ypml);*/
310 return ypprot_err(ypml.status);
311 }
312