Update.
[glibc.git] / sunrpc / pmap_clnt.c
blob4db0f023b6a0c2f663cc402e0f2064866e8c37d5
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 <sys/ioctl.h>
42 #include <sys/socket.h>
43 #include <netinet/in.h>
44 #include <arpa/inet.h>
45 #include <rpc/rpc.h>
46 #include <rpc/pmap_prot.h>
47 #include <rpc/pmap_clnt.h>
50 * Same as get_myaddress, but we try to use the loopback
51 * interface. portmap caches interfaces, and on DHCP clients,
52 * it could be that only loopback is started at this time.
54 static bool_t
55 __get_myaddress (struct sockaddr_in *addr)
57 int s;
58 char buf[BUFSIZ];
59 struct ifconf ifc;
60 struct ifreq ifreq, *ifr;
61 int len, loopback = 1;
63 if ((s = __socket (AF_INET, SOCK_DGRAM, 0)) < 0)
65 perror ("__get_myaddress: socket");
66 exit (1);
68 ifc.ifc_len = sizeof (buf);
69 ifc.ifc_buf = buf;
70 if (__ioctl (s, SIOCGIFCONF, (char *) &ifc) < 0)
72 perror (_("__get_myaddress: ioctl (get interface configuration)"));
73 exit (1);
76 again:
77 ifr = ifc.ifc_req;
78 for (len = ifc.ifc_len; len; len -= sizeof ifreq)
80 ifreq = *ifr;
81 if (__ioctl (s, SIOCGIFFLAGS, (char *) &ifreq) < 0)
83 perror ("__get_myaddress: ioctl");
84 exit (1);
86 if ((ifreq.ifr_flags & IFF_UP) && (ifr->ifr_addr.sa_family == AF_INET)
87 && ((ifreq.ifr_flags & IFF_LOOPBACK) || (loopback == 0)))
89 *addr = *((struct sockaddr_in *) &ifr->ifr_addr);
90 addr->sin_port = htons (PMAPPORT);
91 __close (s);
92 return TRUE;
94 ifr++;
96 if (loopback == 1)
98 loopback = 0;
99 goto again;
101 __close (s);
102 return FALSE;
106 static const struct timeval timeout = {5, 0};
107 static const struct timeval tottimeout = {60, 0};
110 * Set a mapping between program,version and port.
111 * Calls the pmap service remotely to do the mapping.
113 bool_t
114 pmap_set (u_long program, u_long version, int protocol, u_short port)
116 struct sockaddr_in myaddress;
117 int socket = -1;
118 CLIENT *client;
119 struct pmap parms;
120 bool_t rslt;
122 if (!__get_myaddress (&myaddress))
123 return FALSE;
124 client = clntudp_bufcreate (&myaddress, PMAPPROG, PMAPVERS,
125 timeout, &socket, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE);
126 if (client == (CLIENT *) NULL)
127 return (FALSE);
128 parms.pm_prog = program;
129 parms.pm_vers = version;
130 parms.pm_prot = protocol;
131 parms.pm_port = port;
132 if (CLNT_CALL (client, PMAPPROC_SET, (xdrproc_t)xdr_pmap, (caddr_t)&parms,
133 (xdrproc_t)xdr_bool, (caddr_t)&rslt,
134 tottimeout) != RPC_SUCCESS)
136 clnt_perror (client, _("Cannot register service"));
137 return FALSE;
139 CLNT_DESTROY (client);
140 /* (void)close(socket); CLNT_DESTROY closes it */
141 return rslt;
145 * Remove the mapping between program,version and port.
146 * Calls the pmap service remotely to do the un-mapping.
148 bool_t
149 pmap_unset (u_long program, u_long version)
151 struct sockaddr_in myaddress;
152 int socket = -1;
153 CLIENT *client;
154 struct pmap parms;
155 bool_t rslt;
157 if (!__get_myaddress (&myaddress))
158 return FALSE;
159 client = clntudp_bufcreate (&myaddress, PMAPPROG, PMAPVERS,
160 timeout, &socket, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE);
161 if (client == (CLIENT *) NULL)
162 return FALSE;
163 parms.pm_prog = program;
164 parms.pm_vers = version;
165 parms.pm_port = parms.pm_prot = 0;
166 CLNT_CALL (client, PMAPPROC_UNSET, (xdrproc_t)xdr_pmap, (caddr_t)&parms,
167 (xdrproc_t)xdr_bool, (caddr_t)&rslt, tottimeout);
168 CLNT_DESTROY (client);
169 /* (void)close(socket); CLNT_DESTROY already closed it */
170 return rslt;