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15637ed4 RG |
1 | /* @(#)clnt_generic.c 2.2 88/08/01 4.0 RPCSRC */ |
2 | /* | |
3 | * Sun RPC is a product of Sun Microsystems, Inc. and is provided for | |
4 | * unrestricted use provided that this legend is included on all tape | |
5 | * media and as a part of the software program in whole or part. Users | |
6 | * may copy or modify Sun RPC without charge, but are not authorized | |
7 | * to license or distribute it to anyone else except as part of a product or | |
8 | * program developed by the user. | |
9 | * | |
10 | * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE | |
11 | * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR | |
12 | * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. | |
13 | * | |
14 | * Sun RPC is provided with no support and without any obligation on the | |
15 | * part of Sun Microsystems, Inc. to assist in its use, correction, | |
16 | * modification or enhancement. | |
17 | * | |
18 | * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE | |
19 | * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC | |
20 | * OR ANY PART THEREOF. | |
21 | * | |
22 | * In no event will Sun Microsystems, Inc. be liable for any lost revenue | |
23 | * or profits or other special, indirect and consequential damages, even if | |
24 | * Sun has been advised of the possibility of such damages. | |
25 | * | |
26 | * Sun Microsystems, Inc. | |
27 | * 2550 Garcia Avenue | |
28 | * Mountain View, California 94043 | |
29 | */ | |
30 | #if !defined(lint) && defined(SCCSIDS) | |
31 | static char sccsid[] = "@(#)clnt_generic.c 1.4 87/08/11 (C) 1987 SMI"; | |
32 | #endif | |
33 | /* | |
34 | * Copyright (C) 1987, Sun Microsystems, Inc. | |
35 | */ | |
36 | #include <rpc/rpc.h> | |
37 | #include <sys/socket.h> | |
38 | #include <sys/errno.h> | |
39 | #include <netdb.h> | |
40 | ||
41 | /* | |
42 | * Generic client creation: takes (hostname, program-number, protocol) and | |
43 | * returns client handle. Default options are set, which the user can | |
44 | * change using the rpc equivalent of ioctl()'s. | |
45 | */ | |
46 | CLIENT * | |
47 | clnt_create(hostname, prog, vers, proto) | |
48 | char *hostname; | |
49 | unsigned prog; | |
50 | unsigned vers; | |
51 | char *proto; | |
52 | { | |
53 | struct hostent *h; | |
54 | struct protoent *p; | |
55 | struct sockaddr_in sin; | |
56 | int sock; | |
57 | struct timeval tv; | |
58 | CLIENT *client; | |
59 | ||
60 | h = gethostbyname(hostname); | |
61 | if (h == NULL) { | |
62 | rpc_createerr.cf_stat = RPC_UNKNOWNHOST; | |
63 | return (NULL); | |
64 | } | |
65 | if (h->h_addrtype != AF_INET) { | |
66 | /* | |
67 | * Only support INET for now | |
68 | */ | |
69 | rpc_createerr.cf_stat = RPC_SYSTEMERROR; | |
70 | rpc_createerr.cf_error.re_errno = EAFNOSUPPORT; | |
71 | return (NULL); | |
72 | } | |
73 | sin.sin_family = h->h_addrtype; | |
74 | sin.sin_port = 0; | |
75 | bzero(sin.sin_zero, sizeof(sin.sin_zero)); | |
76 | bcopy(h->h_addr, (char*)&sin.sin_addr, h->h_length); | |
77 | p = getprotobyname(proto); | |
78 | if (p == NULL) { | |
79 | rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; | |
80 | rpc_createerr.cf_error.re_errno = EPFNOSUPPORT; | |
81 | return (NULL); | |
82 | } | |
83 | sock = RPC_ANYSOCK; | |
84 | switch (p->p_proto) { | |
85 | case IPPROTO_UDP: | |
86 | tv.tv_sec = 5; | |
87 | tv.tv_usec = 0; | |
88 | client = clntudp_create(&sin, prog, vers, tv, &sock); | |
89 | if (client == NULL) { | |
90 | return (NULL); | |
91 | } | |
92 | tv.tv_sec = 25; | |
93 | clnt_control(client, CLSET_TIMEOUT, &tv); | |
94 | break; | |
95 | case IPPROTO_TCP: | |
96 | client = clnttcp_create(&sin, prog, vers, &sock, 0, 0); | |
97 | if (client == NULL) { | |
98 | return (NULL); | |
99 | } | |
100 | tv.tv_sec = 25; | |
101 | tv.tv_usec = 0; | |
102 | clnt_control(client, CLSET_TIMEOUT, &tv); | |
103 | break; | |
104 | default: | |
105 | rpc_createerr.cf_stat = RPC_SYSTEMERROR; | |
106 | rpc_createerr.cf_error.re_errno = EPFNOSUPPORT; | |
107 | return (NULL); | |
108 | } | |
109 | return (client); | |
110 | } |