2 * Copyright (c) 1994, Garrett Wollman
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 #if defined(LIBC_SCCS) && !defined(lint)
27 static char rcsid[] = "$FreeBSD: src/lib/libc/net/getnetnamadr.c,v 1.12.2.1 2001/03/05 10:47:08 obrien Exp $";
28 #endif /* LIBC_SCCS and not lint */
30 #include <sys/param.h>
31 #include <sys/socket.h>
32 #include <netinet/in.h>
33 #include <arpa/inet.h>
40 #define _PATH_NETCONF "/etc/host.conf"
48 #define SERVICE_MAX SERVICE_NIS
52 enum service_type type;
54 { "hosts", SERVICE_TABLE },
55 { "/etc/hosts", SERVICE_TABLE },
56 { "hosttable", SERVICE_TABLE },
57 { "htable", SERVICE_TABLE },
58 { "bind", SERVICE_BIND },
59 { "dns", SERVICE_BIND },
60 { "domain", SERVICE_BIND },
61 { "yp", SERVICE_NIS },
62 { "yellowpages", SERVICE_NIS },
63 { "nis", SERVICE_NIS },
67 static enum service_type service_order[SERVICE_MAX + 1];
68 static int service_done = 0;
70 static enum service_type
71 get_service_name(const char *name) {
73 for(i = 0; service_names[i].type != SERVICE_NONE; i++) {
74 if(!strcasecmp(name, service_names[i].name)) {
75 return service_names[i].type;
84 char *cp, *p, buf[BUFSIZ];
88 if ((fd = (FILE *)fopen(_PATH_NETCONF, "r")) == NULL) {
89 /* make some assumptions */
90 service_order[0] = SERVICE_TABLE;
91 service_order[1] = SERVICE_NONE;
93 while (fgets(buf, BUFSIZ, fd) != NULL && cc < SERVICE_MAX) {
98 while ((cp = strsep(&p, "\n \t,:;")) != NULL && *cp == '\0')
103 if (isalpha((unsigned char)cp[0])) {
104 service_order[cc] = get_service_name(cp);
105 if(service_order[cc] != SERVICE_NONE)
108 while ((cp = strsep(&p, "\n \t,:;")) != NULL && *cp == '\0')
110 } while(cp != NULL && cc < SERVICE_MAX);
112 service_order[cc] = SERVICE_NONE;
119 getnetbyname(const char *name)
121 struct netent *hp = 0;
128 switch (service_order[nserv]) {
132 hp = _getnetbyhtname(name);
135 hp = _getnetbydnsname(name);
138 hp = _getnetbynisname(name);
147 getnetbyaddr(addr, af)
151 struct netent *hp = 0;
158 switch (service_order[nserv]) {
162 hp = _getnetbyhtaddr(addr, af);
165 hp = _getnetbydnsaddr(addr, af);
168 hp = _getnetbynisaddr(addr, af);
180 _setnethtent(stayopen);
181 _setnetdnsent(stayopen);