xref: /src/usr.bin/rpcgen/rpc_sample.c

/*	$NetBSD: rpc_sample.c,v 1.13 2013/12/15 00:40:17 christos Exp $	*/
/*
 * 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 or with the express written consent of
 * Sun Microsystems, Inc.
 *
 * 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 HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#endif

#include <sys/cdefs.h>
#if defined(__RCSID) && !defined(lint)
#if 0
static char sccsid[] = "@(#)rpc_sample.c  1.1  90/08/30  (C) 1987 SMI";
#else
__RCSID("$NetBSD: rpc_sample.c,v 1.13 2013/12/15 00:40:17 christos Exp $");
#endif
#endif

/*
 * rpc_sample.c, Sample client-server code outputter for the RPC protocol compiler
 */

#include <stdio.h>
#include <string.h>
#include "rpc_scan.h"
#include "rpc_parse.h"
#include "rpc_util.h"

static char RQSTP[] = "rqstp";

static void write_sample_client(const char *, version_list *);
static void write_sample_server(definition *);
static void return_type(proc_list *);

void
write_sample_svc(definition *def)
{

	if (def->def_kind != DEF_PROGRAM)
		return;
	write_sample_server(def);
}


int
write_sample_clnt(definition *def)
{
	version_list *vp;
	int     count = 0;

	if (def->def_kind != DEF_PROGRAM)
		return (0);
	/* generate sample code for each version */
	for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
		write_sample_client(def->def_name, vp);
		++count;
	}
	return (count);
}


static void
write_sample_client(const char *program_name, version_list *vp)
{
	proc_list *proc;
	decl_list *l;

	f_print(fout, "\n\nvoid\n");
	pvname(program_name, vp->vers_num);
	f_print(fout, "(char *host)\n{\n");
	f_print(fout, "\tCLIENT *clnt;\n");

	for (proc = vp->procs; proc != NULL; proc = proc->next) {
		/* print out declarations for arguments */
		if (proc->arg_num < 2 && !newstyle) {
			f_print(fout, "\t");
			if (streq(proc->args.decls->decl.type, "void"))
				f_print(fout, "char ");	/* cannot have "void"
							 * type */
			else
				ptype(proc->args.decls->decl.prefix, proc->args.decls->decl.type, 1);
			pvname(proc->proc_name, vp->vers_num);
			f_print(fout, "_arg;\n");
		} else {
			if (!streq(proc->args.decls->decl.type, "void")) {
				for (l = proc->args.decls; l != NULL; l = l->next) {
					f_print(fout, "\t");
					ptype(l->decl.prefix, l->decl.type, 1);
					pvname(proc->proc_name, vp->vers_num);
					f_print(fout, "_%s;\n", l->decl.name);
/*	  pdeclaration(proc->args.argname, &l->decl, 1, ";\n" );*/
				}
			}
		}
		/* print out declarations for results */
		f_print(fout, "\t");
		if (streq(proc->res_type, "void"))
			f_print(fout, "char");	/* cannot have "void"
						 * type */
		else
			ptype(proc->res_prefix, proc->res_type, 1);
		if (!Mflag)
			f_print(fout, "*");
		pvname(proc->proc_name, vp->vers_num);
		f_print(fout, "_res;\n");
	}
	f_print(fout, "\n");

	/* generate creation of client handle */
	f_print(fout, "\tclnt = clnt_create(host, %s, %s, \"%s\");\n",
	    program_name, vp->vers_name, tirpcflag ? "netpath" : "udp");
	f_print(fout, "\tif (clnt == NULL) {\n");
	f_print(fout, "\t\tclnt_pcreateerror(host);\n");
	f_print(fout, "\t\texit(1);\n\t}\n");

	/* generate calls to procedures */
	for (proc = vp->procs; proc != NULL; proc = proc->next) {
		if (Mflag)
			f_print(fout, "\tif (");
		else {
			f_print(fout, "\t");
			pvname(proc->proc_name, vp->vers_num);
			f_print(fout, "_res = ");
		}
		pvname(proc->proc_name, vp->vers_num);
		if (proc->arg_num < 2 && !newstyle) {
			f_print(fout, "(");
			if (streq(proc->args.decls->decl.type, "void"))	/* cast to void* */
				f_print(fout, "(void *)");
			f_print(fout, "&");
			pvname(proc->proc_name, vp->vers_num);
			f_print(fout, "_arg, ");
		} else {
			if (streq(proc->args.decls->decl.type, "void")) {
				f_print(fout, "(clnt);\n");
			} else {
				f_print(fout, "(");
				for (l = proc->args.decls; l != NULL; l = l->next) {
					pvname(proc->proc_name, vp->vers_num);
					f_print(fout, "_%s, ", l->decl.name);
				}
			}
		}
		if (Mflag) {
			f_print(fout, "&");
			pvname(proc->proc_name, vp->vers_num);
			f_print(fout, "_res, clnt) != RPC_SUCCESS)\n");
		} else {
			f_print(fout, "clnt);\n");
			f_print(fout, "\tif (");
			pvname(proc->proc_name, vp->vers_num);
			f_print(fout, "_res == NULL)\n");
		}
		f_print(fout, "\t\tclnt_perror(clnt, \"call failed\");\n");
	}

	f_print(fout, "\tclnt_destroy(clnt);\n");
	f_print(fout, "}\n");
}

static void
write_sample_server(definition *def)
{
	version_list *vp;
	proc_list *proc;

	for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
		for (proc = vp->procs; proc != NULL; proc = proc->next) {
			f_print(fout, "\n");
			if (Mflag)
				f_print(fout, "bool_t\n");
			else {
				return_type(proc);
				f_print(fout, "*\n");
			}
			pvname_svc(proc->proc_name, vp->vers_num);
			printarglist(proc, "result", RQSTP, "struct svc_req *");

			f_print(fout, "{\n");
			if (Mflag) {
				f_print(fout, "\tbool_t retval = TRUE;\n");
			} else {
				f_print(fout, "\tstatic ");
				if (streq(proc->res_type, "void"))
					f_print(fout, "char ");	/* cannot have void type */
				else
					return_type(proc);
				f_print(fout, "result;\n");
			}
			f_print(fout,
			    "\n\t/*\n\t * insert server code here\n\t */\n\n");
			if (Mflag) {
				f_print(fout, "\treturn (retval);\n");
			} else {
				if (streq(proc->res_type, "void"))
					f_print(fout, "\treturn ((void *)&result);\n");
				else
					f_print(fout, "\treturn (&result);\n");
			}
			f_print(fout, "}\n");
		}
	}
}

static void
return_type(proc_list *plist)
{
	ptype(plist->res_prefix, plist->res_type, 1);
}

void
add_sample_msg(void)
{
	f_print(fout, "/*\n");
	f_print(fout, " * This is sample code generated by rpcgen.\n");
	f_print(fout, " * These are only templates and you can use them\n");
	f_print(fout, " * as a guideline for developing your own functions.\n");
	f_print(fout, " */\n\n");
}

void
write_sample_clnt_main(void)
{
	list   *l;
	definition *def;
	version_list *vp;

	f_print(fout, "\n\n");
	f_print(fout, "int\nmain(int argc, char *argv[])\n{\n");
	f_print(fout, "\tchar *host;");
	f_print(fout, "\n\n\tif (argc < 2) {");
	f_print(fout, "\n\t\tprintf(\"usage: %%s server_host\\n\", argv[0]);\n");
	f_print(fout, "\t\texit(1);\n\t}");
	f_print(fout, "\n\thost = argv[1];\n");

	for (l = defined; l != NULL; l = l->next) {
		def = l->val;
		if (def->def_kind != DEF_PROGRAM) {
			continue;
		}
		for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
			f_print(fout, "\t");
			pvname(def->def_name, vp->vers_num);
			f_print(fout, "(host);\n");
		}
	}
	f_print(fout, "\texit(0);\n");
	f_print(fout, "}\n");
}