* Copyright (C) 1984, Sun Microsystems, Inc.
*/
+#include <stdbool.h>
+#include <unistd.h>
#include <rpc/rpc.h>
#include <rpc/pmap_prot.h>
#include <rpc/pmap_clnt.h>
{60, 0};
/*
+ * Create a socket that is locally bound to a non-reserve port. For
+ * any failures, -1 is returned which will cause the RPC code to
+ * create the socket.
+ */
+int
+internal_function
+__get_socket (struct sockaddr_in *saddr)
+{
+ int so = __socket (AF_INET, SOCK_STREAM, IPPROTO_TCP);
+ if (so < 0)
+ return -1;
+
+ struct sockaddr_in laddr;
+ socklen_t namelen = sizeof (laddr);
+ laddr.sin_family = AF_INET;
+ laddr.sin_port = 0;
+ laddr.sin_addr.s_addr = htonl (INADDR_ANY);
+
+ int cc = __bind (so, (struct sockaddr *) &laddr, namelen);
+ if (__builtin_expect (cc < 0, 0))
+ {
+ fail:
+ __close (so);
+ return -1;
+ }
+
+ cc = __connect (so, (struct sockaddr *) saddr, namelen);
+ if (__builtin_expect (cc < 0, 0))
+ goto fail;
+
+ return so;
+}
+
+
+/*
* Find the mapped port for program,version.
* Calls the pmap service remotely to do the lookup.
* Returns 0 if no map exists.
int socket = -1;
CLIENT *client;
struct pmap parms;
+ bool closeit = false;
address->sin_port = htons (PMAPPORT);
- client = INTUSE(clntudp_bufcreate) (address, PMAPPROG, PMAPVERS, timeout,
- &socket, RPCSMALLMSGSIZE,
- RPCSMALLMSGSIZE);
+ if (protocol == IPPROTO_TCP)
+ {
+ /* Don't need a reserved port to get ports from the portmapper. */
+ socket = __get_socket(address);
+ if (socket != -1)
+ closeit = true;
+ client = INTUSE(clnttcp_create) (address, PMAPPROG, PMAPVERS, &socket,
+ RPCSMALLMSGSIZE, RPCSMALLMSGSIZE);
+ }
+ else
+ client = INTUSE(clntudp_bufcreate) (address, PMAPPROG, PMAPVERS, timeout,
+ &socket, RPCSMALLMSGSIZE,
+ RPCSMALLMSGSIZE);
if (client != (CLIENT *) NULL)
{
struct rpc_createerr *ce = &get_rpc_createerr ();
}
CLNT_DESTROY (client);
}
- /* (void)close(socket); CLNT_DESTROY already closed it */
+ /* We only need to close the socket here if we opened it. */
+ if (closeit)
+ (void) __close (socket);
address->sin_port = 0;
return port;
}