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 sccsid
[] = "@(#)$Id: gethostnamadr.c,v 1.1.1.1 2003/11/19 01:51:27 kyu3 Exp $";
28 static char rcsid
[] = "$Id: gethostnamadr.c,v 1.1.1.1 2003/11/19 01:51:27 kyu3 Exp $";
29 #endif /* LIBC_SCCS and not lint */
31 #include <sys/param.h>
32 #include <sys/socket.h>
33 #include <netinet/in.h>
34 #include <arpa/inet.h>
41 #include <arpa/nameser.h> /* XXX hack for _res */
42 #include <resolv.h> /* XXX hack for _res */
44 #include "Socklib_internals.h"
52 #define SERVICE_MAX SERVICE_NIS
56 enum service_type type
;
58 { "hosts", SERVICE_HOSTS
},
59 { _PATH_HOSTS
, SERVICE_HOSTS
},
60 { "hosttable", SERVICE_HOSTS
},
61 { "htable", SERVICE_HOSTS
},
62 { "bind", SERVICE_BIND
},
63 { "dns", SERVICE_BIND
},
64 { "domain", SERVICE_BIND
},
65 { "yp", SERVICE_NIS
},
66 { "yellowpages", SERVICE_NIS
},
67 { "nis", SERVICE_NIS
},
71 static enum service_type service_order
[SERVICE_MAX
+ 1];
72 static int service_done
= 0;
74 static enum service_type
75 get_service_name(const char *name
) {
77 for(i
= 0; service_names
[i
].type
!= SERVICE_NONE
; i
++) {
78 if(!strcasecmp(name
, service_names
[i
].name
)) {
79 return service_names
[i
].type
;
88 char *cp
, *p
, buf
[BUFSIZ
];
92 if ((fd
= (FILE *)fopen(_PATH_HOSTCONF
, "r")) == NULL
) {
93 /* make some assumptions */
94 service_order
[0] = SERVICE_HOSTS
;
95 service_order
[1] = SERVICE_BIND
;
96 service_order
[2] = SERVICE_NONE
;
98 while (fgets(buf
, BUFSIZ
, fd
) != NULL
&& cc
< SERVICE_MAX
) {
103 while ((cp
= strsep(&p
, "\n \t,:;")) != NULL
&& *cp
== '\0')
108 if (isalpha(cp
[0])) {
109 service_order
[cc
] = get_service_name(cp
);
110 if(service_order
[cc
] != SERVICE_NONE
)
113 while ((cp
= strsep(&p
, "\n \t,:;")) != NULL
&& *cp
== '\0')
115 } while(cp
!= NULL
&& cc
< SERVICE_MAX
);
117 service_order
[cc
] = SERVICE_NONE
;
124 gethostbyname(const char *name
)
128 if (_res
.options
& RES_USE_INET6
) { /* XXX */
129 hp
= gethostbyname2(name
, AF_INET6
); /* XXX */
131 return (hp
); /* XXX */
133 return (gethostbyname2(name
, AF_INET
));
137 gethostbyname2(const char *name
, int type
)
139 struct hostent
*hp
= 0;
146 switch (service_order
[nserv
]) {
150 hp
= _gethostbyhtname(name
, type
);
153 hp
= _gethostbydnsname(name
, type
);
156 hp
= _gethostbynisname(name
, type
);
165 gethostbyaddr(const char *addr
, socklen_t len
, int type
)
167 struct hostent
*hp
= 0;
174 switch (service_order
[nserv
]) {
178 hp
= _gethostbyhtaddr(addr
, len
, type
);
181 hp
= _gethostbydnsaddr(addr
, len
, type
);
184 hp
= _gethostbynisaddr(addr
, len
, type
);
196 * Temporary function (not thread safe)
198 int gethostbyaddr_r(const char *addr
, int len
, int type
,
199 struct hostent
*result
, struct hostent_data
*buffer
)
203 if ((hp
= gethostbyaddr(addr
, len
, type
)) == NULL
) {
206 memcpy(result
, hp
, sizeof(struct hostent
));
214 sethostent(int stayopen
)
216 _sethosthtent(stayopen
);
217 _sethostdnsent(stayopen
);