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1.1 root 1: /*
2: * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
3: * unrestricted use provided that this legend is included on all tape
4: * media and as a part of the software program in whole or part. Users
5: * may copy or modify Sun RPC without charge, but are not authorized
6: * to license or distribute it to anyone else except as part of a product or
7: * program developed by the user.
8: *
9: * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
10: * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
11: * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
12: *
13: * Sun RPC is provided with no support and without any obligation on the
14: * part of Sun Microsystems, Inc. to assist in its use, correction,
15: * modification or enhancement.
16: *
17: * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
18: * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
19: * OR ANY PART THEREOF.
20: *
21: * In no event will Sun Microsystems, Inc. be liable for any lost revenue
22: * or profits or other special, indirect and consequential damages, even if
23: * Sun has been advised of the possibility of such damages.
24: *
25: * Sun Microsystems, Inc.
26: * 2550 Garcia Avenue
27: * Mountain View, California 94043
28: */
29: #ifndef lint
30: static char sccsid[] = "@(#)pmap_clnt.c 1.4 85/04/08 Copyr 1984 Sun Micro";
31: #endif
32:
33: /*
34: * pmap_clnt.c
35: * Client interface to pmap rpc service.
36: *
37: * Copyright (C) 1984, Sun Microsystems, Inc.
38: */
39:
40: #include "types.h"
41: #include <netinet/in.h>
42: #include "xdr.h"
43: #include "auth.h"
44: #include "clnt.h"
45: #include "rpc_msg.h"
46: #include "pmap_prot.h"
47: #include "pmap_clnt.h"
48: #include <sys/socket.h>
49: #include <sys/time.h>
50: #include <stdio.h>
51: #include <net/if.h>
52: #include <sys/ioctl.h>
53: #include <arpa/inet.h>
54: #define NAMELEN 255
55:
56: static struct timeval timeout = { 5, 0 };
57: static struct timeval tottimeout = { 60, 0 };
58: static struct sockaddr_in myaddress;
59:
60: void clnt_perror();
61:
62:
63: /*
64: * Set a mapping between program,version and port.
65: * Calls the pmap service remotely to do the mapping.
66: */
67: bool_t
68: pmap_set(program, version, protocol, port)
69: u_long program;
70: u_long version;
71: u_long protocol;
72: u_short port;
73: {
74: struct sockaddr_in myaddress;
75: int socket = -1;
76: register CLIENT *client;
77: struct pmap parms;
78: bool_t rslt;
79:
80: get_myaddress(&myaddress);
81: client = clntudp_create(&myaddress, PMAPPROG, PMAPVERS,
82: timeout, &socket);
83: if (client == (CLIENT *)NULL)
84: return (FALSE);
85: parms.pm_prog = program;
86: parms.pm_vers = version;
87: parms.pm_prot = protocol;
88: parms.pm_port = port;
89: if (CLNT_CALL(client, PMAPPROC_SET, xdr_pmap, &parms, xdr_bool, &rslt,
90: tottimeout) != RPC_SUCCESS) {
91: clnt_perror(client, "Cannot register service");
92: return (FALSE);
93: }
94: CLNT_DESTROY(client);
95: (void)close(socket);
96: return (rslt);
97: }
98:
99: /*
100: * Remove the mapping between program,version and port.
101: * Calls the pmap service remotely to do the un-mapping.
102: */
103: bool_t
104: pmap_unset(program, version)
105: u_long program;
106: u_long version;
107: {
108: struct sockaddr_in myaddress;
109: int socket = -1;
110: register CLIENT *client;
111: struct pmap parms;
112: bool_t rslt;
113:
114: get_myaddress(&myaddress);
115: client = clntudp_create(&myaddress, PMAPPROG, PMAPVERS,
116: timeout, &socket);
117: if (client == (CLIENT *)NULL)
118: return (FALSE);
119: parms.pm_prog = program;
120: parms.pm_vers = version;
121: parms.pm_port = parms.pm_prot = 0;
122: CLNT_CALL(client, PMAPPROC_UNSET, xdr_pmap, &parms, xdr_bool, &rslt,
123: tottimeout);
124: CLNT_DESTROY(client);
125: (void)close(socket);
126: return (rslt);
127: }
128:
129: /*
130: * don't use gethostbyname, which would invoke yellow pages
131: */
132: get_myaddress(addr)
133: struct sockaddr_in *addr;
134: {
135: int s;
136: char buf[BUFSIZ];
137: struct ifconf ifc;
138: struct ifreq ifreq, *ifr;
139: int len, slop;
140:
141: if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
142: perror("get_myaddress: socket");
143: exit(1);
144: }
145: ifc.ifc_len = sizeof (buf);
146: ifc.ifc_buf = buf;
147: if (ioctl(s, SIOCGIFCONF, (char *)&ifc) < 0) {
148: perror("get_myaddress: ioctl (get interface configuration)");
149: exit(1);
150: }
151: ifr = ifc.ifc_req;
152: for (len = ifc.ifc_len; len; len -= sizeof ifreq) {
153: ifreq = *ifr;
154: if (ioctl(s, SIOCGIFFLAGS, (char *)&ifreq) < 0) {
155: perror("get_myaddress: ioctl");
156: exit(1);
157: }
158: if ((ifreq.ifr_flags & IFF_UP) &&
159: ifr->ifr_addr.sa_family == AF_INET) {
160: *addr = *((struct sockaddr_in *)&ifr->ifr_addr);
161: addr->sin_port = htons(PMAPPORT);
162: break;
163: }
164: /*
165: * Deal with variable length addresses
166: */
167: slop = ifr->ifr_addr.sa_len - sizeof (struct sockaddr);
168: if (slop) {
169: ifr = (struct ifreq *) ((caddr_t)ifr + slop);
170: len -= slop;
171: }
172: ifr++;
173: }
174: close(s);
175: }
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