added rpc boiler plate code

Makefile

+.SUFFIXES:
+.SUFFIXES: .c .o
+CLNT = llist
+SRVR = llist_svc
+CFLAGS = -g -Wall
+
+# SRVR_OBJ = llist_svc_proc.o llist_xdr.o llist_svc.o
+CLNT_OBJ = llist.o llist_xdr.o llist_clnt.o
+
+.c.o:; gcc -c -o $@ $(CFLAGS) $<
+
+default: $(CLNT)
+
+$(CLNT): $(CLNT_OBJ)
+	gcc -o $(CLNT) $(CLNT_OBJ)
+
+$(SRVR): $(SRVR_OBJ)
+	gcc -o $(SRVR) $(SRVR_OBJ)
+
+clean:
+	rm -f *.o 
+	rm -f llist llist_svc
\ No newline at end of file

llist.c

+#include"llist.h"
+list *mk_list(char *data, int key, color c)
+{
+    list *lst;
+
+    lst = (list*)malloc(sizeof(list));
+    if (lst == NULL)
+        return NULL;
+    lst->data = data;
+    lst->key = key;
+    lst->col = c;
+    lst->next = NULL;
+    return lst;
+}
+
+int main(int argc, char *argv[])
+{
+    list *l, *new;
+    CLIENT *cl;
+    int *result;
+
+    new = mk_list("three", 3, ORANGE);
+    l = new;
+    new = mk_list("one", 1, ORANGE);
+    new->next = l;
+    l = new;
+    cl = clnt_create(argv[1], PRINTER, PRINTER_V1, "tcp");
+    if (cl == NULL) {
+        printf("error: could not connect to server.\n");
+        return 1;
+    }
+    result = print_list_1(l, cl);
+    if (result == NULL) {
+        printf("error: RPC failed!\n");
+        return 1;
+    }
+    printf("client: server says it printed %d items.\n", *result);
+
+    return 0;
+}

llist.h

+/*
+ * Please do not edit this file.
+ * It was generated using rpcgen.
+ */
+
+#ifndef _LLIST_H_RPCGEN
+#define _LLIST_H_RPCGEN
+
+#include <rpc/rpc.h>
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+enum color {
+	ORANGE = 0,
+	PUCE = 1,
+	TURQUOISE = 2,
+};
+typedef enum color color;
+
+struct list {
+	char *data;
+	int key;
+	color col;
+	struct list *next;
+};
+typedef struct list list;
+
+#define PRINTER 0x2fffffff
+#define PRINTER_V1 1
+
+#if defined(__STDC__) || defined(__cplusplus)
+#define PRINT_LIST 1
+extern  int * print_list_1(list *, CLIENT *);
+extern  int * print_list_1_svc(list *, struct svc_req *);
+#define SUM_LIST 2
+extern  int * sum_list_1(list *, CLIENT *);
+extern  int * sum_list_1_svc(list *, struct svc_req *);
+extern int printer_1_freeresult (SVCXPRT *, xdrproc_t, caddr_t);
+
+#else /* K&R C */
+#define PRINT_LIST 1
+extern  int * print_list_1();
+extern  int * print_list_1_svc();
+#define SUM_LIST 2
+extern  int * sum_list_1();
+extern  int * sum_list_1_svc();
+extern int printer_1_freeresult ();
+#endif /* K&R C */
+
+/* the xdr functions */
+
+#if defined(__STDC__) || defined(__cplusplus)
+extern  bool_t xdr_color (XDR *, color*);
+extern  bool_t xdr_list (XDR *, list*);
+
+#else /* K&R C */
+extern bool_t xdr_color ();
+extern bool_t xdr_list ();
+
+#endif /* K&R C */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* !_LLIST_H_RPCGEN */

llist.x

+enum color {ORANGE, PUCE, TURQUOISE};
+
+struct list {
+	string data<>;
+	int key;
+	color col;
+	list *next;
+};
+
+program PRINTER {
+	version PRINTER_V1 {
+		int PRINT_LIST(list) = 1;
+		int SUM_LIST(list) = 2;
+	} = 1;
+} = 0x2fffffff;
\ No newline at end of file

llist_clnt.c

+/*
+ * Please do not edit this file.
+ * It was generated using rpcgen.
+ */
+
+#include <memory.h> /* for memset */
+#include "llist.h"
+
+/* Default timeout can be changed using clnt_control() */
+static struct timeval TIMEOUT = { 25, 0 };
+
+int *
+print_list_1(list *argp, CLIENT *clnt)
+{
+	static int clnt_res;
+
+	memset((char *)&clnt_res, 0, sizeof(clnt_res));
+	if (clnt_call (clnt, PRINT_LIST,
+		(xdrproc_t) xdr_list, (caddr_t) argp,
+		(xdrproc_t) xdr_int, (caddr_t) &clnt_res,
+		TIMEOUT) != RPC_SUCCESS) {
+		return (NULL);
+	}
+	return (&clnt_res);
+}
+
+int *
+sum_list_1(list *argp, CLIENT *clnt)
+{
+	static int clnt_res;
+
+	memset((char *)&clnt_res, 0, sizeof(clnt_res));
+	if (clnt_call (clnt, SUM_LIST,
+		(xdrproc_t) xdr_list, (caddr_t) argp,
+		(xdrproc_t) xdr_int, (caddr_t) &clnt_res,
+		TIMEOUT) != RPC_SUCCESS) {
+		return (NULL);
+	}
+	return (&clnt_res);
+}

llist_xdr.c

+/*
+ * Please do not edit this file.
+ * It was generated using rpcgen.
+ */
+
+#include "llist.h"
+
+bool_t
+xdr_color (XDR *xdrs, color *objp)
+{
+	register int32_t *buf;
+
+	 if (!xdr_enum (xdrs, (enum_t *) objp))
+		 return FALSE;
+	return TRUE;
+}
+
+bool_t
+xdr_list (XDR *xdrs, list *objp)
+{
+	register int32_t *buf;
+
+	 if (!xdr_string (xdrs, &objp->data, ~0))
+		 return FALSE;
+	 if (!xdr_int (xdrs, &objp->key))
+		 return FALSE;
+	 if (!xdr_color (xdrs, &objp->col))
+		 return FALSE;
+	 if (!xdr_pointer (xdrs, (char **)&objp->next, sizeof (list), (xdrproc_t) xdr_list))
+		 return FALSE;
+	return TRUE;
+}

server/Makefile

+.SUFFIXES:
+.SUFFIXES: .c .o
+CLNT = llist
+SRVR = llist_svc
+CFLAGS = -g -Wall
+
+SRVR_OBJ = llist_svc_proc.o llist_xdr.o llist_svc.o
+# CLNT_OBJ = llist.o llist_xdr.o llist_clnt.o
+
+.c.o:; gcc -c -o $@ $(CFLAGS) $<
+
+default: $(SRVR)
+
+$(CLNT): $(CLNT_OBJ)
+	gcc -o $(CLNT) $(CLNT_OBJ)
+
+$(SRVR): $(SRVR_OBJ)
+	gcc -o $(SRVR) $(SRVR_OBJ)
+
+clean:
+	rm -f *.o 
+	rm -f llist llist_svc
\ No newline at end of file

server/llist.c

+#include"llist.h"
+list *mk_list(char *data, int key, color c)
+{
+    list *lst;
+
+    lst = (list*)malloc(sizeof(list));
+    if (lst == NULL)
+        return NULL;
+    lst->data = data;
+    lst->key = key;
+    lst->col = c;
+    lst->next = NULL;
+    return lst;
+}
+
+int main(int argc, char *argv[])
+{
+    list *l, *new;
+    CLIENT *cl;
+    int *result;
+
+    new = mk_list("three", 3, ORANGE);
+    l = new;
+    new = mk_list("one", 1, ORANGE);
+    new->next = l;
+    l = new;
+    cl = clnt_create(argv[1], PRINTER, PRINTER_V1, "tcp");
+    if (cl == NULL) {
+        printf("error: could not connect to server.\n");
+        return 1;
+    }
+    result = print_list_1(l, cl);
+    if (result == NULL) {
+        printf("error: RPC failed!\n");
+        return 1;
+    }
+    printf("client: server says it printed %d items.\n", *result);
+
+    return 0;
+}

server/llist.h

+/*
+ * Please do not edit this file.
+ * It was generated using rpcgen.
+ */
+
+#ifndef _LLIST_H_RPCGEN
+#define _LLIST_H_RPCGEN
+
+#include <rpc/rpc.h>
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+enum color {
+	ORANGE = 0,
+	PUCE = 1,
+	TURQUOISE = 2,
+};
+typedef enum color color;
+
+struct list {
+	char *data;
+	int key;
+	color col;
+	struct list *next;
+};
+typedef struct list list;
+
+#define PRINTER 0x2fffffff
+#define PRINTER_V1 1
+
+#if defined(__STDC__) || defined(__cplusplus)
+#define PRINT_LIST 1
+extern  int * print_list_1(list *, CLIENT *);
+extern  int * print_list_1_svc(list *, struct svc_req *);
+#define SUM_LIST 2
+extern  int * sum_list_1(list *, CLIENT *);
+extern  int * sum_list_1_svc(list *, struct svc_req *);
+extern int printer_1_freeresult (SVCXPRT *, xdrproc_t, caddr_t);
+
+#else /* K&R C */
+#define PRINT_LIST 1
+extern  int * print_list_1();
+extern  int * print_list_1_svc();
+#define SUM_LIST 2
+extern  int * sum_list_1();
+extern  int * sum_list_1_svc();
+extern int printer_1_freeresult ();
+#endif /* K&R C */
+
+/* the xdr functions */
+
+#if defined(__STDC__) || defined(__cplusplus)
+extern  bool_t xdr_color (XDR *, color*);
+extern  bool_t xdr_list (XDR *, list*);
+
+#else /* K&R C */
+extern bool_t xdr_color ();
+extern bool_t xdr_list ();
+
+#endif /* K&R C */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* !_LLIST_H_RPCGEN */

server/llist.x

+enum color {ORANGE, PUCE, TURQUOISE};
+
+struct list {
+	string data<>;
+	int key;
+	color col;
+	list *next;
+};
+
+program PRINTER {
+	version PRINTER_V1 {
+		int PRINT_LIST(list) = 1;
+		int SUM_LIST(list) = 2;
+	} = 1;
+} = 0x2fffffff;
\ No newline at end of file

server/llist_clnt.c

+/*
+ * Please do not edit this file.
+ * It was generated using rpcgen.
+ */
+
+#include <memory.h> /* for memset */
+#include "llist.h"
+
+/* Default timeout can be changed using clnt_control() */
+static struct timeval TIMEOUT = { 25, 0 };
+
+int *
+print_list_1(list *argp, CLIENT *clnt)
+{
+	static int clnt_res;
+
+	memset((char *)&clnt_res, 0, sizeof(clnt_res));
+	if (clnt_call (clnt, PRINT_LIST,
+		(xdrproc_t) xdr_list, (caddr_t) argp,
+		(xdrproc_t) xdr_int, (caddr_t) &clnt_res,
+		TIMEOUT) != RPC_SUCCESS) {
+		return (NULL);
+	}
+	return (&clnt_res);
+}
+
+int *
+sum_list_1(list *argp, CLIENT *clnt)
+{
+	static int clnt_res;
+
+	memset((char *)&clnt_res, 0, sizeof(clnt_res));
+	if (clnt_call (clnt, SUM_LIST,
+		(xdrproc_t) xdr_list, (caddr_t) argp,
+		(xdrproc_t) xdr_int, (caddr_t) &clnt_res,
+		TIMEOUT) != RPC_SUCCESS) {
+		return (NULL);
+	}
+	return (&clnt_res);
+}

server/llist_svc.c

+/*
+ * Please do not edit this file.
+ * It was generated using rpcgen.
+ */
+
+#include "llist.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <rpc/pmap_clnt.h>
+#include <string.h>
+#include <memory.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+
+#ifndef SIG_PF
+#define SIG_PF void(*)(int)
+#endif
+
+static void
+printer_1(struct svc_req *rqstp, register SVCXPRT *transp)
+{
+	union {
+		list print_list_1_arg;
+		list sum_list_1_arg;
+	} argument;
+	char *result;
+	xdrproc_t _xdr_argument, _xdr_result;
+	char *(*local)(char *, struct svc_req *);
+
+	switch (rqstp->rq_proc) {
+	case NULLPROC:
+		(void) svc_sendreply (transp, (xdrproc_t) xdr_void, (char *)NULL);
+		return;
+
+	case PRINT_LIST:
+		_xdr_argument = (xdrproc_t) xdr_list;
+		_xdr_result = (xdrproc_t) xdr_int;
+		local = (char *(*)(char *, struct svc_req *)) print_list_1_svc;
+		break;
+
+	case SUM_LIST:
+		_xdr_argument = (xdrproc_t) xdr_list;
+		_xdr_result = (xdrproc_t) xdr_int;
+		local = (char *(*)(char *, struct svc_req *)) sum_list_1_svc;
+		break;
+
+	default:
+		svcerr_noproc (transp);
+		return;
+	}
+	memset ((char *)&argument, 0, sizeof (argument));
+	if (!svc_getargs (transp, (xdrproc_t) _xdr_argument, (caddr_t) &argument)) {
+		svcerr_decode (transp);
+		return;
+	}
+	result = (*local)((char *)&argument, rqstp);
+	if (result != NULL && !svc_sendreply(transp, (xdrproc_t) _xdr_result, result)) {
+		svcerr_systemerr (transp);
+	}
+	if (!svc_freeargs (transp, (xdrproc_t) _xdr_argument, (caddr_t) &argument)) {
+		fprintf (stderr, "%s", "unable to free arguments");
+		exit (1);
+	}
+	return;
+}
+
+int
+main (int argc, char **argv)
+{
+	register SVCXPRT *transp;
+
+	pmap_unset (PRINTER, PRINTER_V1);
+
+	transp = svcudp_create(RPC_ANYSOCK);
+	if (transp == NULL) {
+		fprintf (stderr, "%s", "cannot create udp service.");
+		exit(1);
+	}
+	if (!svc_register(transp, PRINTER, PRINTER_V1, printer_1, IPPROTO_UDP)) {
+		fprintf (stderr, "%s", "unable to register (PRINTER, PRINTER_V1, udp).");
+		exit(1);
+	}
+
+	transp = svctcp_create(RPC_ANYSOCK, 0, 0);
+	if (transp == NULL) {
+		fprintf (stderr, "%s", "cannot create tcp service.");
+		exit(1);
+	}
+	if (!svc_register(transp, PRINTER, PRINTER_V1, printer_1, IPPROTO_TCP)) {
+		fprintf (stderr, "%s", "unable to register (PRINTER, PRINTER_V1, tcp).");
+		exit(1);
+	}
+
+	svc_run ();
+	fprintf (stderr, "%s", "svc_run returned");
+	exit (1);
+	/* NOTREACHED */
+}

server/llist_svc_proc.c

+#include"llist.h"
+int result;
+
+int *print_list_1_svc(list *lst, struct svc_req *req)
+{
+    list *ptr;
+
+    ptr = lst;
+    result = 0;
+    while (ptr != NULL) {
+        printf("{%s, ", ptr->data);
+        printf("%d, ", ptr->key);
+        switch (ptr->col) {
+        case ORANGE: printf("orange"); break;
+        case PUCE: printf("puce"); break;
+        case TURQUOISE: printf("turquoise");
+        }
+        printf("}\n");
+        result++;
+        ptr = ptr->next;
+    }
+    return &result;
+}
+
+int *sum_list_1_svc(list *lst, struct svc_req *req)
+{
+    list *ptr;
+
+    ptr = lst;
+    result = 0;
+    while (ptr != NULL) {
+        result += ptr->key;
+        ptr = ptr->next;
+    }
+    return &result;
+
+}
\ No newline at end of file

server/llist_xdr.c

+/*
+ * Please do not edit this file.
+ * It was generated using rpcgen.
+ */
+
+#include "llist.h"
+
+bool_t
+xdr_color (XDR *xdrs, color *objp)
+{
+	register int32_t *buf;
+
+	 if (!xdr_enum (xdrs, (enum_t *) objp))
+		 return FALSE;
+	return TRUE;
+}
+
+bool_t
+xdr_list (XDR *xdrs, list *objp)
+{
+	register int32_t *buf;
+
+	 if (!xdr_string (xdrs, &objp->data, ~0))
+		 return FALSE;
+	 if (!xdr_int (xdrs, &objp->key))
+		 return FALSE;
+	 if (!xdr_color (xdrs, &objp->col))
+		 return FALSE;
+	 if (!xdr_pointer (xdrs, (char **)&objp->next, sizeof (list), (xdrproc_t) xdr_list))
+		 return FALSE;
+	return TRUE;
+}