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/* $OpenBSD: rpc_sample.c,v 1.18 2012/12/05 23:20:26 deraadt Exp $ */
/* $NetBSD: rpc_sample.c,v 1.2 1995/06/11 21:50:01 pk Exp $ */
/*
* Copyright (c) 2010, Oracle America, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of the "Oracle America, Inc." 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 COPYRIGHT HOLDERS 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
* COPYRIGHT HOLDER 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.
*/
/*
* rpc_sample.c, Sample client-server code outputter for the RPC protocol compiler
*/
#include <stdio.h>
#include <string.h>
#include "rpc_parse.h"
#include "rpc_util.h"
static char RQSTP[] = "rqstp";
static void write_sample_client(char *, version_list *);
static void write_sample_server(definition *);
static void return_type(proc_list *);
void
write_sample_svc(def)
definition *def;
{
if (def->def_kind != DEF_PROGRAM)
return;
write_sample_server(def);
}
int
write_sample_clnt(def)
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(program_name, vp)
char *program_name;
version_list *vp;
{
proc_list *proc;
int i;
decl_list *l;
fprintf(fout, "\n\nvoid\n");
pvname(program_name, vp->vers_num);
if (Cflag)
fprintf(fout,"(char *host)\n{\n");
else
fprintf(fout, "(host)\nchar *host;\n{\n");
fprintf(fout, "\tCLIENT *clnt;\n");
i = 0;
for (proc = vp->procs; proc != NULL; proc = proc->next) {
fprintf(fout, "\t");
ptype(proc->res_prefix, proc->res_type, 1);
fprintf(fout, " *result_%d;\n",++i);
/* print out declarations for arguments */
if (proc->arg_num < 2 && !newstyle) {
fprintf(fout, "\t");
if (!streq(proc->args.decls->decl.type, "void"))
ptype(proc->args.decls->decl.prefix,
proc->args.decls->decl.type, 1);
else
fprintf(fout, "char *"); /* cannot have "void" type */
fprintf(fout, " ");
pvname(proc->proc_name, vp->vers_num);
fprintf(fout, "_arg;\n");
} else if (!streq(proc->args.decls->decl.type, "void")) {
for (l = proc->args.decls; l != NULL; l = l->next) {
fprintf(fout, "\t");
ptype(l->decl.prefix, l->decl.type, 1);
fprintf(fout, " ");
pvname(proc->proc_name, vp->vers_num);
fprintf(fout, "_%s;\n", l->decl.name);
/* pdeclaration(proc->args.argname, &l->decl, 1, ";\n");*/
}
}
}
/* generate creation of client handle */
fprintf(fout, "\tclnt = clnt_create(host, %s, %s, \"%s\");\n",
program_name, vp->vers_name, tirpcflag? "netpath" : "udp");
fprintf(fout, "\tif (clnt == NULL) {\n");
fprintf(fout, "\t\tclnt_pcreateerror(host);\n");
fprintf(fout, "\t\texit(1);\n\t}\n");
/* generate calls to procedures */
i = 0;
for (proc = vp->procs; proc != NULL; proc = proc->next) {
fprintf(fout, "\tresult_%d = ",++i);
pvname(proc->proc_name, vp->vers_num);
if (proc->arg_num < 2 && !newstyle) {
fprintf(fout, "(");
if (streq(proc->args.decls->decl.type, "void"))
fprintf(fout, "(void*)");
fprintf(fout, "&");
pvname(proc->proc_name, vp->vers_num);
fprintf(fout, "_arg, clnt);\n");
} else if (streq(proc->args.decls->decl.type, "void")) {
fprintf(fout, "(clnt);\n");
} else {
fprintf(fout, "(");
for (l = proc->args.decls; l != NULL; l = l->next) {
pvname(proc->proc_name, vp->vers_num);
fprintf(fout, "_%s, ", l->decl.name);
}
fprintf(fout, "clnt);\n");
}
fprintf(fout, "\tif (result_%d == NULL) {\n", i);
fprintf(fout, "\t\tclnt_perror(clnt, \"call failed:\");\n");
fprintf(fout, "\t}\n");
}
fprintf(fout, "\tclnt_destroy(clnt);\n");
fprintf(fout, "}\n");
}
static void
write_sample_server(def)
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) {
fprintf(fout, "\n");
/* if (Cflag)
fprintf(fout, "extern \"C\"{\n");
*/
return_type(proc);
fprintf(fout, "* \n");
pvname_svc(proc->proc_name, vp->vers_num);
printarglist(proc, RQSTP, "struct svc_req *");
fprintf(fout, "{\n");
fprintf(fout, "\n\tstatic ");
if (!streq(proc->res_type, "void"))
return_type(proc);
else
fprintf(fout, "char*"); /* cannot have void type */
fprintf(fout, " result;\n");
fprintf(fout,
"\n\t/*\n\t * insert server code here\n\t */\n\n");
if (!streq(proc->res_type, "void"))
fprintf(fout, "\treturn(&result);\n}\n");
else /* cast back to void * */
fprintf(fout, "\treturn((void*) &result);\n}\n");
/* if (Cflag)
fprintf(fout, "}\n");
*/
}
}
}
static void
return_type(plist)
proc_list *plist;
{
ptype(plist->res_prefix, plist->res_type, 1);
}
void
add_sample_msg(void)
{
fprintf(fout, "/*\n");
fprintf(fout, " * This is sample code generated by rpcgen.\n");
fprintf(fout, " * These are only templates and you can use them\n");
fprintf(fout, " * as a guideline for developing your own functions.\n");
fprintf(fout, " */\n\n");
}
void
write_sample_clnt_main()
{
list *l;
definition *def;
version_list *vp;
fprintf(fout, "\n\n");
if (Cflag)
fprintf(fout,"main(int argc, char *argv[])\n{\n");
else
fprintf(fout, "main(argc, argv)\nint argc;\nchar *argv[];\n{\n");
fprintf(fout, "\tchar *host;");
fprintf(fout, "\n\n\tif (argc < 2) {");
fprintf(fout, "\n\t\tprintf(\"usage: %%s server_host\\n\", argv[0]);\n");
fprintf(fout, "\t\texit(1);\n\t}");
fprintf(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) {
fprintf(fout, "\t");
pvname(def->def_name, vp->vers_num);
fprintf(fout, "(host);\n");
}
}
fprintf(fout, "}\n");
}
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