1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright (c) 1991-1994 Sun Microsystems, Inc
24 *
25 * lib/libsocket/inet/getservbyname_r.c
26 *
27 * getservbyname_r() is defined in this file. It is implemented on top of
28 * _get_hostserv_inetnetdir_byname() which is also used to implement
29 * netdir_getbyname() for inet family transports. In turn the common code
30 * uses the name service switch policy for "hosts" and "services" unless
31 * the administrator chooses to bypass the name service switch by
32 * specifying third-party supplied nametoaddr libs for inet transports
33 * in /etc/netconfig.
34 *
35 * getservbyport_r() is similarly related to _get_hostserv_inetnetdir_byaddr()
36 * and netdir_getbyaddr();
37 *
38 * The common code lives in lib/libnsl/nss/netdir_inet.c.
39 *
40 * getservent_r(), setservent() and endservent() are *not* implemented on top
41 * of the common interface; they go straight to the switch and are
42 * defined in getservent_r.c.
43 *
44 * There is absolutely no data sharing, not even the stayopen flag or
45 * enumeration state, between getservbyYY_r() and getservent_r();
46 */
47
48 #pragma ident "%Z%%M% %I% %E% SMI"
49
50 #include <netdb.h>
51 #include <netdir.h>
52 #include <sys/types.h>
53 #include <nss_netdir.h>
54
55 extern int str2servent(const char *, int, void *, char *, int);
56 extern struct netconfig *__rpc_getconfip();
57
58 struct servent *
getservbyname_r(const char * name,const char * proto,struct servent * result,char * buffer,int buflen)59 getservbyname_r(const char *name, const char *proto, struct servent *result,
60 char *buffer, int buflen)
61 {
62 struct netconfig *nconf;
63 struct nss_netdirbyname_in nssin;
64 union nss_netdirbyname_out nssout;
65 int neterr;
66
67 if ((nconf = __rpc_getconfip("udp")) == NULL &&
68 (nconf = __rpc_getconfip("tcp")) == NULL) {
69 return ((struct servent *)NULL);
70 }
71 nssin.op_t = NSS_SERV;
72 nssin.arg.nss.serv.name = name;
73 nssin.arg.nss.serv.proto = proto;
74 nssin.arg.nss.serv.buf = buffer;
75 nssin.arg.nss.serv.buflen = buflen;
76
77 nssout.nss.serv = result;
78
79 /*
80 * We pass in nconf and let the implementation of the long-named func
81 * decide whether to use the switch based on nc_nlookups.
82 */
83 neterr = _get_hostserv_inetnetdir_byname(nconf, &nssin, &nssout);
84
85 (void) freenetconfigent(nconf);
86 if (neterr != ND_OK) {
87 return ((struct servent *)NULL);
88 }
89 return (nssout.nss.serv);
90 }
91
92 struct servent *
getservbyport_r(int port,const char * proto,struct servent * result,char * buffer,int buflen)93 getservbyport_r(int port, const char *proto, struct servent *result,
94 char *buffer, int buflen)
95 {
96 struct netconfig *nconf;
97 struct nss_netdirbyaddr_in nssin;
98 union nss_netdirbyaddr_out nssout;
99 int neterr;
100
101 if ((nconf = __rpc_getconfip("udp")) == NULL &&
102 (nconf = __rpc_getconfip("tcp")) == NULL) {
103 return ((struct servent *)NULL);
104 }
105 nssin.op_t = NSS_SERV;
106 nssin.arg.nss.serv.port = port;
107 nssin.arg.nss.serv.proto = proto;
108 nssin.arg.nss.serv.buf = buffer;
109 nssin.arg.nss.serv.buflen = buflen;
110
111 nssout.nss.serv = result;
112
113 /*
114 * We pass in nconf and let the implementation of this long-named func
115 * decide whether to use the switch based on nc_nlookups.
116 */
117 neterr = _get_hostserv_inetnetdir_byaddr(nconf, &nssin, &nssout);
118
119 (void) freenetconfigent(nconf);
120 if (neterr != ND_OK) {
121 return ((struct servent *)NULL);
122 }
123 return (nssout.nss.serv);
124 }
125