diff options
Diffstat (limited to 'sunrpc')
| -rw-r--r-- | sunrpc/pmap_clnt.c | 77 |
1 files changed, 68 insertions, 9 deletions
diff --git a/sunrpc/pmap_clnt.c b/sunrpc/pmap_clnt.c index 68bdfab..11e241d 100644 --- a/sunrpc/pmap_clnt.c +++ b/sunrpc/pmap_clnt.c @@ -1,4 +1,3 @@ -/* @(#)pmap_clnt.c 2.2 88/08/01 4.0 RPCSRC */ /* * Sun RPC is a product of Sun Microsystems, Inc. and is provided for * unrestricted use provided that this legend is included on all tape @@ -27,21 +26,81 @@ * 2550 Garcia Avenue * Mountain View, California 94043 */ -#if !defined(lint) && defined(SCCSIDS) -static char sccsid[] = "@(#)pmap_clnt.c 1.37 87/08/11 Copyr 1984 Sun Micro"; -#endif - +/* + * Copyright (C) 1984, Sun Microsystems, Inc. + */ /* * pmap_clnt.c * Client interface to pmap rpc service. - * - * Copyright (C) 1984, Sun Microsystems, Inc. */ +#include <stdio.h> +#include <unistd.h> +#include <net/if.h> +#include <sys/ioctl.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> #include <rpc/rpc.h> #include <rpc/pmap_prot.h> #include <rpc/pmap_clnt.h> +/* + * Same as get_myaddress, but we try to use the loopback + * interface. portmap caches interfaces, and on DHCP clients, + * it could be that only loopback is started at this time. + */ +static void +__get_myaddress (struct sockaddr_in *addr) +{ + int s; + char buf[BUFSIZ]; + struct ifconf ifc; + struct ifreq ifreq, *ifr; + int len, loopback = 1; + + if ((s = __socket (AF_INET, SOCK_DGRAM, 0)) < 0) + { + perror ("__get_myaddress: socket"); + exit (1); + } + ifc.ifc_len = sizeof (buf); + ifc.ifc_buf = buf; + if (__ioctl (s, SIOCGIFCONF, (char *) &ifc) < 0) + { + perror (_("__get_myaddress: ioctl (get interface configuration)")); + exit (1); + } + + again: + ifr = ifc.ifc_req; + for (len = ifc.ifc_len; len; len -= sizeof ifreq) + { + ifreq = *ifr; + if (__ioctl (s, SIOCGIFFLAGS, (char *) &ifreq) < 0) + { + perror ("__get_myaddress: ioctl"); + exit (1); + } + if ((ifreq.ifr_flags & IFF_UP) && (ifr->ifr_addr.sa_family == AF_INET) + && ((ifreq.ifr_flags & IFF_LOOPBACK) || (loopback == 0))) + { + *addr = *((struct sockaddr_in *) &ifr->ifr_addr); + addr->sin_port = htons (PMAPPORT); + __close (s); + return; + } + ifr++; + } + if (loopback == 1) + { + loopback = 0; + goto again; + } + __close (s); +} + + static const struct timeval timeout = {5, 0}; static const struct timeval tottimeout = {60, 0}; @@ -58,7 +117,7 @@ pmap_set (u_long program, u_long version, int protocol, u_short port) struct pmap parms; bool_t rslt; - get_myaddress (&myaddress); + __get_myaddress (&myaddress); client = clntudp_bufcreate (&myaddress, PMAPPROG, PMAPVERS, timeout, &socket, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE); if (client == (CLIENT *) NULL) @@ -92,7 +151,7 @@ pmap_unset (u_long program, u_long version) struct pmap parms; bool_t rslt; - get_myaddress (&myaddress); + __get_myaddress (&myaddress); client = clntudp_bufcreate (&myaddress, PMAPPROG, PMAPVERS, timeout, &socket, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE); if (client == (CLIENT *) NULL) |