remove RPC implementation

The included RPC implementation is ipv4 only.
Other C library projects have either deprecated the internal
RPC implementation (GNU C Library) or never implemented such
functionality (musl C Library). The latest rpcbind release (0.2.4)
checks for libtirpc and does not allow to be build with uClibc-ng
RPC without patching. The common use case for RPC nowadays is to
use rpcbind together with nfs-utils to provide NFS server or client
support to a system.

The included RPC implementation does create issues with duplicate
symbol failures when statically compiling with RPC enabled.

1 files changed, 0 insertions, 193 deletions

diff --git a/libc/inet/rpc/rexec.c b/libc/inet/rpc/rexec.c
deleted file mode 100644
index e17be50b2..000000000
--- a/libc/inet/rpc/rexec.c
+++ /dev/null
@@ -1,193 +0,0 @@
-/*
- * Copyright (c) 1980, 1993
- *	The Regents of the University of California.  All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 4. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/types.h>
-#include <sys/socket.h>
-
-#include <netinet/in.h>
-
-#include <alloca.h>
-#include <stdio.h>
-#include <netdb.h>
-#include <errno.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <malloc.h>
-
-#define SA_LEN(_x)      __libc_sa_len((_x)->sa_family)
-extern int __libc_sa_len(sa_family_t __af) __THROW attribute_hidden;
-
-/* int rexecoptions; - google does not know it */
-static char *ahostbuf = NULL;
-
-int
-rexec_af(char **ahost, int rport, const char *name, const char *pass, const char *cmd, int *fd2p, sa_family_t af)
-{
-	struct sockaddr_storage sa2, from;
-	struct addrinfo hints, *res0;
-	const char *orig_name = name;
-	const char *orig_pass = pass;
-	u_short port = 0;
-	int s, timo = 1, s3;
-	char c;
-	int gai;
-	char servbuff[NI_MAXSERV];
-
-	if (sizeof(servbuff) < sizeof(int)*3 + 2) {
-		snprintf(servbuff, sizeof(servbuff), "%d", ntohs(rport));
-		servbuff[sizeof(servbuff) - 1] = '\0';
-	} else {
-		sprintf(servbuff, "%d", ntohs(rport));
-	}
-
-	memset(&hints, '\0', sizeof(hints));
-	hints.ai_family = af;
-	hints.ai_socktype = SOCK_STREAM;
-	hints.ai_flags = AI_CANONNAME;
-	gai = getaddrinfo(*ahost, servbuff, &hints, &res0);
-	if (gai) {
-		/* XXX: set errno? */
-		return -1;
-	}
-
-	if (res0->ai_canonname) {
-		if (!ahostbuf)
-			ahostbuf = __uc_malloc(NI_MAXHOST);
-		strncpy(ahostbuf, res0->ai_canonname, NI_MAXHOST);
-		ahostbuf[NI_MAXHOST-1] = '\0';
-		*ahost = ahostbuf;
-	}
-	else {
-		*ahost = NULL;
-		__set_errno(ENOENT);
-		return -1;
-	}
-	ruserpass(res0->ai_canonname, &name, &pass);
-retry:
-	s = socket(res0->ai_family, res0->ai_socktype, 0);
-	if (s < 0) {
-		perror("rexec: socket");
-		return -1;
-	}
-	if (connect(s, res0->ai_addr, res0->ai_addrlen) < 0) {
-		if (errno == ECONNREFUSED && timo <= 16) {
-			(void) close(s);
-			sleep(timo);
-			timo *= 2;
-			goto retry;
-		}
-		perror(res0->ai_canonname);
-		return -1;
-	}
-	if (fd2p == 0) {
-		(void) write(s, "", 1);
-		port = 0;
-	} else {
-		char num[32];
-		int s2;
-		socklen_t sa2len;
-
-		s2 = socket(res0->ai_family, res0->ai_socktype, 0);
-		if (s2 < 0) {
-			(void) close(s);
-			return -1;
-		}
-		listen(s2, 1);
-		sa2len = sizeof(sa2);
-		if (getsockname(s2, (struct sockaddr *)&sa2, &sa2len) < 0) {
-			perror("getsockname");
-			(void) close(s2);
-			goto bad;
-		} else if (sa2len != SA_LEN((struct sockaddr *)&sa2)) {
-			__set_errno(EINVAL);
-			(void) close(s2);
-			goto bad;
-		}
-		port = 0;
-		if (!getnameinfo((struct sockaddr *)&sa2, sa2len,
-				 NULL, 0, servbuff, sizeof(servbuff),
-				 NI_NUMERICSERV))
-			port = atoi(servbuff);
-		(void) sprintf(num, "%u", port);
-		(void) write(s, num, strlen(num)+1);
-		{
-			socklen_t len = sizeof(from);
-			s3 = TEMP_FAILURE_RETRY(accept(s2,
-					(struct sockaddr *)&from, &len));
-			close(s2);
-			if (s3 < 0) {
-				perror("accept");
-				port = 0;
-				goto bad;
-			}
-		}
-		*fd2p = s3;
-	}
-	(void) write(s, name, strlen(name) + 1);
-	/* should public key encypt the password here */
-	(void) write(s, pass, strlen(pass) + 1);
-	(void) write(s, cmd, strlen(cmd) + 1);
-
-	/* We don't need the memory allocated for the name and the password
-	   in ruserpass anymore.  */
-	if (name != orig_name)
-		free((char *) name);
-	if (pass != orig_pass)
-		free((char *) pass);
-
-	if (read(s, &c, 1) != 1) {
-		perror(*ahost);
-		goto bad;
-	}
-	if (c != 0) {
-		while (read(s, &c, 1) == 1) {
-			(void) write(2, &c, 1);
-			if (c == '\n')
-				break;
-		}
-		goto bad;
-	}
-	freeaddrinfo(res0);
-	return s;
-bad:
-	if (port)
-		(void) close(*fd2p);
-	(void) close(s);
-	freeaddrinfo(res0);
-	return -1;
-}
-libc_hidden_def(rexec_af)
-
-int
-rexec(char **ahost, int rport, const char *name, const char *pass,
-	  const char *cmd, int *fd2p)
-{
-	return rexec_af(ahost, rport, name, pass, cmd, fd2p, AF_INET);
-}