Moving Sun RPC code into libc, part 1. Based on work done by a number of

people, including J.T. Conklin, Theo de Raadt, Paul Richards, and probably
someone else who's going to flame me as soon as they see this message.

1 files changed, 145 insertions, 0 deletions

diff --git a/lib/libc/rpc/svc_simple.c b/lib/libc/rpc/svc_simple.c
new file mode 100644
index 0000000..eacf859
--- /dev/null
+++ b/lib/libc/rpc/svc_simple.c
@@ -0,0 +1,145 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ * 
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ * 
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ * 
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ * 
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ * 
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)svc_simple.c 1.18 87/08/11 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)svc_simple.c	2.2 88/08/01 4.0 RPCSRC";*/
+static char *rcsid = "$Id: svc_simple.c,v 1.1 1993/10/27 05:41:01 paul Exp $";
+#endif
+
+/* 
+ * svc_simple.c
+ * Simplified front end to rpc.
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ */
+
+#include <stdio.h>
+#include <rpc/rpc.h>
+#include <sys/socket.h>
+#include <netdb.h>
+
+static struct proglst {
+	char *(*p_progname)();
+	int  p_prognum;
+	int  p_procnum;
+	xdrproc_t p_inproc, p_outproc;
+	struct proglst *p_nxt;
+} *proglst;
+static void universal();
+static SVCXPRT *transp;
+struct proglst *pl;
+
+registerrpc(prognum, versnum, procnum, progname, inproc, outproc)
+	char *(*progname)();
+	xdrproc_t inproc, outproc;
+{
+	
+	if (procnum == NULLPROC) {
+		(void) fprintf(stderr,
+		    "can't reassign procedure number %d\n", NULLPROC);
+		return (-1);
+	}
+	if (transp == 0) {
+		transp = svcudp_create(RPC_ANYSOCK);
+		if (transp == NULL) {
+			(void) fprintf(stderr, "couldn't create an rpc server\n");
+			return (-1);
+		}
+	}
+	(void) pmap_unset((u_long)prognum, (u_long)versnum);
+	if (!svc_register(transp, (u_long)prognum, (u_long)versnum, 
+	    universal, IPPROTO_UDP)) {
+	    	(void) fprintf(stderr, "couldn't register prog %d vers %d\n",
+		    prognum, versnum);
+		return (-1);
+	}
+	pl = (struct proglst *)malloc(sizeof(struct proglst));
+	if (pl == NULL) {
+		(void) fprintf(stderr, "registerrpc: out of memory\n");
+		return (-1);
+	}
+	pl->p_progname = progname;
+	pl->p_prognum = prognum;
+	pl->p_procnum = procnum;
+	pl->p_inproc = inproc;
+	pl->p_outproc = outproc;
+	pl->p_nxt = proglst;
+	proglst = pl;
+	return (0);
+}
+
+static void
+universal(rqstp, transp)
+	struct svc_req *rqstp;
+	SVCXPRT *transp;
+{
+	int prog, proc;
+	char *outdata;
+	char xdrbuf[UDPMSGSIZE];
+	struct proglst *pl;
+
+	/* 
+	 * enforce "procnum 0 is echo" convention
+	 */
+	if (rqstp->rq_proc == NULLPROC) {
+		if (svc_sendreply(transp, xdr_void, (char *)NULL) == FALSE) {
+			(void) fprintf(stderr, "xxx\n");
+			exit(1);
+		}
+		return;
+	}
+	prog = rqstp->rq_prog;
+	proc = rqstp->rq_proc;
+	for (pl = proglst; pl != NULL; pl = pl->p_nxt)
+		if (pl->p_prognum == prog && pl->p_procnum == proc) {
+			/* decode arguments into a CLEAN buffer */
+			bzero(xdrbuf, sizeof(xdrbuf)); /* required ! */
+			if (!svc_getargs(transp, pl->p_inproc, xdrbuf)) {
+				svcerr_decode(transp);
+				return;
+			}
+			outdata = (*(pl->p_progname))(xdrbuf);
+			if (outdata == NULL && pl->p_outproc != xdr_void)
+				/* there was an error */
+				return;
+			if (!svc_sendreply(transp, pl->p_outproc, outdata)) {
+				(void) fprintf(stderr,
+				    "trouble replying to prog %d\n",
+				    pl->p_prognum);
+				exit(1);
+			}
+			/* free the decoded arguments */
+			(void)svc_freeargs(transp, pl->p_inproc, xdrbuf);
+			return;
+		}
+	(void) fprintf(stderr, "never registered prog %d\n", prog);
+	exit(1);
+}
+