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28f540f4 | 1 | /* |
a7ab6ec8 | 2 | * Copyright (c) 2010, Oracle America, Inc. |
cb636bb2 | 3 | * |
a7ab6ec8 UD |
4 | * Redistribution and use in source and binary forms, with or without |
5 | * modification, are permitted provided that the following conditions are | |
6 | * met: | |
e4cf5070 | 7 | * |
a7ab6ec8 UD |
8 | * * Redistributions of source code must retain the above copyright |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * * Redistributions in binary form must reproduce the above | |
11 | * copyright notice, this list of conditions and the following | |
12 | * disclaimer in the documentation and/or other materials | |
13 | * provided with the distribution. | |
14 | * * Neither the name of the "Oracle America, Inc." nor the names of its | |
15 | * contributors may be used to endorse or promote products derived | |
16 | * from this software without specific prior written permission. | |
e4cf5070 | 17 | * |
a7ab6ec8 UD |
18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
19 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
20 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | |
21 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | |
22 | * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, | |
23 | * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE | |
25 | * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | |
27 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
28 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
28f540f4 RM |
30 | */ |
31 | ||
e4cf5070 UD |
32 | #include <alloca.h> |
33 | #include <errno.h> | |
28f540f4 | 34 | #include <stdio.h> |
28f540f4 | 35 | #include <netdb.h> |
e7fd8a39 UD |
36 | #include <string.h> |
37 | #include <rpc/rpc.h> | |
38 | #include <rpc/clnt.h> | |
39 | #include <rpc/pmap_clnt.h> | |
28f540f4 RM |
40 | #include <sys/socket.h> |
41 | ||
e4cf5070 | 42 | int |
e7fd8a39 | 43 | getrpcport (const char *host, u_long prognum, u_long versnum, u_int proto) |
28f540f4 | 44 | { |
e7fd8a39 UD |
45 | struct sockaddr_in addr; |
46 | struct hostent hostbuf, *hp; | |
47 | size_t buflen; | |
48 | char *buffer; | |
49 | int herr; | |
e4cf5070 | 50 | |
e7fd8a39 UD |
51 | buflen = 1024; |
52 | buffer = __alloca (buflen); | |
1d863dc0 UD |
53 | while (__gethostbyname_r (host, &hostbuf, buffer, buflen, &hp, &herr) != 0 |
54 | || hp == NULL) | |
e7fd8a39 UD |
55 | if (herr != NETDB_INTERNAL || errno != ERANGE) |
56 | return 0; | |
57 | else | |
58 | { | |
59 | /* Enlarge the buffer. */ | |
60 | buflen *= 2; | |
e4cf5070 | 61 | buffer = __alloca (buflen); |
e7fd8a39 | 62 | } |
28f540f4 | 63 | |
9af652f6 | 64 | memcpy ((char *) &addr.sin_addr, hp->h_addr, hp->h_length); |
e7fd8a39 UD |
65 | addr.sin_family = AF_INET; |
66 | addr.sin_port = 0; | |
67 | return pmap_getport (&addr, prognum, versnum, proto); | |
28f540f4 | 68 | } |