.
[glibc.git] / sunrpc / pmap_clnt.c
blob3e42960893cd183773ed67f8eea7d77e9a3079e5
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.
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.
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.
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.
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.
25 * Sun Microsystems, Inc.
26 * 2550 Garcia Avenue
27 * Mountain View, California 94043
30 * Copyright (C) 1984, Sun Microsystems, Inc.
33 * pmap_clnt.c
34 * Client interface to pmap rpc service.
37 #include <stdio.h>
38 #include <unistd.h>
39 #include <libintl.h>
40 #include <net/if.h>
41 #include <ifaddrs.h>
42 #include <sys/ioctl.h>
43 #include <sys/socket.h>
44 #include <netinet/in.h>
45 #include <arpa/inet.h>
46 #include <rpc/rpc.h>
47 #include <rpc/pmap_prot.h>
48 #include <rpc/pmap_clnt.h>
51 * Same as get_myaddress, but we try to use the loopback
52 * interface. portmap caches interfaces, and on DHCP clients,
53 * it could be that only loopback is started at this time.
55 static bool_t
56 __get_myaddress (struct sockaddr_in *addr)
58 struct ifaddrs *ifa;
60 if (getifaddrs (&ifa) != 0)
62 perror ("get_myaddress: getifaddrs");
63 exit (1);
66 int loopback = 1;
67 struct ifaddrs *run;
69 again:
70 run = ifa;
71 while (run != NULL)
73 if ((run->ifa_flags & IFF_UP)
74 && run->ifa_addr != NULL
75 && run->ifa_addr->sa_family == AF_INET
76 && ((run->ifa_flags & IFF_LOOPBACK) || loopback == 0))
78 *addr = *((struct sockaddr_in *) run->ifa_addr);
79 addr->sin_port = htons (PMAPPORT);
80 goto out;
83 run = run->ifa_next;
86 if (loopback == 1)
88 loopback = 0;
89 goto again;
91 out:
92 freeifaddrs (ifa);
94 return run == NULL ? FALSE : TRUE;
98 static const struct timeval timeout = {5, 0};
99 static const struct timeval tottimeout = {60, 0};
102 * Set a mapping between program,version and port.
103 * Calls the pmap service remotely to do the mapping.
105 bool_t
106 pmap_set (u_long program, u_long version, int protocol, u_short port)
108 struct sockaddr_in myaddress;
109 int socket = -1;
110 CLIENT *client;
111 struct pmap parms;
112 bool_t rslt;
114 if (!__get_myaddress (&myaddress))
115 return FALSE;
116 client = INTUSE(clntudp_bufcreate) (&myaddress, PMAPPROG, PMAPVERS,
117 timeout, &socket, RPCSMALLMSGSIZE,
118 RPCSMALLMSGSIZE);
119 if (client == (CLIENT *) NULL)
120 return (FALSE);
121 parms.pm_prog = program;
122 parms.pm_vers = version;
123 parms.pm_prot = protocol;
124 parms.pm_port = port;
125 if (CLNT_CALL (client, PMAPPROC_SET, (xdrproc_t)INTUSE(xdr_pmap),
126 (caddr_t)&parms, (xdrproc_t)INTUSE(xdr_bool), (caddr_t)&rslt,
127 tottimeout) != RPC_SUCCESS)
129 clnt_perror (client, _("Cannot register service"));
130 rslt = FALSE;
132 CLNT_DESTROY (client);
133 /* (void)close(socket); CLNT_DESTROY closes it */
134 return rslt;
136 libc_hidden_def (pmap_set)
139 * Remove the mapping between program,version and port.
140 * Calls the pmap service remotely to do the un-mapping.
142 bool_t
143 pmap_unset (u_long program, u_long version)
145 struct sockaddr_in myaddress;
146 int socket = -1;
147 CLIENT *client;
148 struct pmap parms;
149 bool_t rslt;
151 if (!__get_myaddress (&myaddress))
152 return FALSE;
153 client = INTUSE(clntudp_bufcreate) (&myaddress, PMAPPROG, PMAPVERS,
154 timeout, &socket, RPCSMALLMSGSIZE,
155 RPCSMALLMSGSIZE);
156 if (client == (CLIENT *) NULL)
157 return FALSE;
158 parms.pm_prog = program;
159 parms.pm_vers = version;
160 parms.pm_port = parms.pm_prot = 0;
161 CLNT_CALL (client, PMAPPROC_UNSET, (xdrproc_t)INTUSE(xdr_pmap),
162 (caddr_t)&parms, (xdrproc_t)INTUSE(xdr_bool), (caddr_t)&rslt,
163 tottimeout);
164 CLNT_DESTROY (client);
165 /* (void)close(socket); CLNT_DESTROY already closed it */
166 return rslt;
168 libc_hidden_def (pmap_unset)