2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 #if defined(LIBC_SCCS) && !defined(lint)
35 static char sccsid[] = "@(#)getservent.c 8.1 (Berkeley) 6/4/93";
36 #endif /* LIBC_SCCS and not lint */
37 #include <sys/cdefs.h>
38 #include <sys/types.h>
39 #include <machine/endian.h>
41 #include <sys/types.h>
42 #include <sys/socket.h>
43 #include <arpa/inet.h>
50 #include <rpcsvc/yp_prot.h>
51 #include <rpcsvc/ypclnt.h>
52 static int serv_stepping_yp = 0;
53 extern int _yp_check( char ** );
59 static FILE *servf = NULL;
60 static char line[BUFSIZ+1];
61 static struct servent serv;
62 static char *serv_aliases[MAXALIASES];
66 char *___getservbyname_yp = NULL;
67 char *___getservbyproto_yp = NULL;
68 int ___getservbyport_yp = 0;
69 static char *yp_domain = NULL;
72 _getservbyport_yp(line)
77 char buf[YPMAXRECORD + 2];
80 snprintf(buf, sizeof(buf), "%d/%s", ntohs(___getservbyport_yp),
81 ___getservbyproto_yp);
83 ___getservbyport_yp = 0;
84 ___getservbyproto_yp = NULL;
87 if(yp_get_default_domain(&yp_domain))
92 * We have to be a little flexible here. Ideally you're supposed
93 * to have both a services.byname and a services.byport map, but
94 * some systems have only services.byname. FreeBSD cheats a little
95 * by putting the services.byport information in the same map as
96 * services.byname so that either case will work. We allow for both
97 * possibilities here: if there is no services.byport map, we try
98 * services.byname instead.
100 if ((rv = yp_match(yp_domain, "services.byport", buf, strlen(buf),
101 &result, &resultlen))) {
102 if (rv == YPERR_MAP) {
103 if (yp_match(yp_domain, "services.byname", buf,
104 strlen(buf), &result, &resultlen))
110 /* getservent() expects lines terminated with \n -- make it happy */
111 snprintf(line, BUFSIZ, "%.*s\n", resultlen, result);
118 _getservbyname_yp(line)
123 char buf[YPMAXRECORD + 2];
126 if(yp_get_default_domain(&yp_domain))
130 snprintf(buf, sizeof(buf), "%s/%s", ___getservbyname_yp,
131 ___getservbyproto_yp);
133 ___getservbyname_yp = 0;
134 ___getservbyproto_yp = NULL;
136 if (yp_match(yp_domain, "services.byname", buf, strlen(buf),
137 &result, &resultlen)) {
141 /* getservent() expects lines terminated with \n -- make it happy */
142 snprintf(line, BUFSIZ, "%.*s\n", resultlen, result);
152 static char *key = NULL;
154 char *lastkey, *result;
159 if(yp_get_default_domain(&yp_domain))
163 if (!serv_stepping_yp) {
166 if ((rv = yp_first(yp_domain, "services.byname", &key, &keylen,
167 &result, &resultlen))) {
168 serv_stepping_yp = 0;
171 serv_stepping_yp = 1;
174 rv = yp_next(yp_domain, "services.byname", key, keylen, &key,
175 &keylen, &result, &resultlen);
178 serv_stepping_yp = 0;
183 /* getservent() expects lines terminated with \n -- make it happy */
184 snprintf(line, BUFSIZ, "%.*s\n", resultlen, result);
197 servf = fopen(_PATH_SERVICES, "r" );
220 if (serv_stepping_yp && _getservent_yp(line)) {
226 if (servf == NULL && (servf = fopen(_PATH_SERVICES, "r" )) == NULL)
229 if ((p = fgets(line, BUFSIZ, servf)) == NULL)
232 if (*p == '+' && _yp_check(NULL)) {
233 if (___getservbyname_yp != NULL) {
234 if (!_getservbyname_yp(line))
237 else if (___getservbyport_yp != 0) {
238 if (!_getservbyport_yp(line))
241 else if (!_getservent_yp(line))
248 cp = strpbrk(p, "#\n");
253 p = strpbrk(p, " \t");
257 while (*p == ' ' || *p == '\t')
259 cp = strpbrk(p, ",/");
263 serv.s_port = htons((u_short)atoi(p));
265 q = serv.s_aliases = serv_aliases;
266 cp = strpbrk(cp, " \t");
270 if (*cp == ' ' || *cp == '\t') {
274 if (q < &serv_aliases[MAXALIASES - 1])
276 cp = strpbrk(cp, " \t");