tools/rpcgen/rpc_sample.c

   1 /*
   2  * Copyright (c) 2009, Sun Microsystems, Inc.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are met:
   7  * - Redistributions of source code must retain the above copyright notice,
   8  *   this list of conditions and the following disclaimer.
   9  * - Redistributions in binary form must reproduce the above copyright notice,
  10  *   this list of conditions and the following disclaimer in the documentation
  11  *   and/or other materials provided with the distribution.
  12  * - Neither the name of Sun Microsystems, Inc. nor the names of its
  13  *   contributors may be used to endorse or promote products derived
  14  *   from this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  17  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
  20  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  26  * POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #if 0
  30 static char sccsid[] = "@(#)rpc_sample.c  1.1  90/08/30  (C) 1987 SMI";
  31
  32 #endif
  33
  34 /*
  35  * rpc_sample.c, Sample client-server code outputter for the RPC protocol compiler
  36  */
  37
  38 #include <stdio.h>
  39 #include <string.h>
  40 #include "rpc_parse.h"
  41 #include "rpc_util.h"
  42
  43
  44 static char RQSTP[] = "rqstp";
  45
  46 static void     write_sample_client(char *program_name, version_list *vp);
  47 static void     write_sample_server(definition * def);
  48 static void     return_type(proc_list *plist);
  49
  50 void
  51 write_sample_svc(definition *def)
  52 {
  53         if (def->def_kind != DEF_PROGRAM)
  54                 return;
  55         write_sample_server(def);
  56 }
  57
  58
  59 int
  60 write_sample_clnt(definition *def)
  61 {
  62         version_list   *vp;
  63         int             count = 0;
  64
  65         if (def->def_kind != DEF_PROGRAM)
  66                 return (0);
  67         /* generate sample code for each version */
  68         for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
  69                 write_sample_client(def->def_name, vp);
  70                 ++count;
  71         }
  72         return (count);
  73 }
  74
  75
  76 static void
  77 write_sample_client(char *program_name, version_list *vp)
  78 {
  79         proc_list      *proc;
  80         int             i;
  81         decl_list      *l;
  82
  83         f_print(fout, "\n\nvoid\n");
  84         pvname(program_name, vp->vers_num);
  85         if (Cflag)
  86                 f_print(fout, "( char* host )\n{\n");
  87         else
  88                 f_print(fout, "(host)\nchar *host;\n{\n");
  89         f_print(fout, "\tCLIENT *clnt;\n");
  90
  91         i = 0;
  92         for (proc = vp->procs; proc != NULL; proc = proc->next) {
  93                 f_print(fout, "\t");
  94                 ptype(proc->res_prefix, proc->res_type, 1);
  95                 f_print(fout, " *result_%d;\n", ++i);
  96                 /* print out declarations for arguments */
  97                 if (proc->arg_num < 2 && !newstyle) {
  98                         f_print(fout, "\t");
  99                         if (!streq(proc->args.decls->decl.type, "void"))
 100                                 ptype(proc->args.decls->decl.prefix, proc->args.decls->decl.type, 1);
 101                         else
 102                                 f_print(fout, "char* ");        /* cannot have "void" type */
 103                         f_print(fout, " ");
 104                         pvname(proc->proc_name, vp->vers_num);
 105                         f_print(fout, "_arg;\n");
 106                 } else if (!streq(proc->args.decls->decl.type, "void")) {
 107                         for (l = proc->args.decls; l != NULL; l = l->next) {
 108                                 f_print(fout, "\t");
 109                                 ptype(l->decl.prefix, l->decl.type, 1);
 110                                 f_print(fout, " ");
 111                                 pvname(proc->proc_name, vp->vers_num);
 112                                 f_print(fout, "_%s;\n", l->decl.name);
 113                                 /*        pdeclaration(proc->args.argname, &l->decl, 1, ";\n" );*/
 114                         }
 115                 }
 116         }
 117
 118         /* generate creation of client handle */
 119         f_print(fout, "\tclnt = clnt_create(host, %s, %s, \"%s\");\n",
 120                 program_name, vp->vers_name, tirpcflag ? "netpath" : "udp");
 121         f_print(fout, "\tif (clnt == NULL) {\n");
 122         f_print(fout, "\t\tclnt_pcreateerror(host);\n");
 123         f_print(fout, "\t\texit(1);\n\t}\n");
 124
 125         /* generate calls to procedures */
 126         i = 0;
 127         for (proc = vp->procs; proc != NULL; proc = proc->next) {
 128                 f_print(fout, "\tresult_%d = ", ++i);
 129                 pvname(proc->proc_name, vp->vers_num);
 130                 if (proc->arg_num < 2 && !newstyle) {
 131                         f_print(fout, "(");
 132                         if (streq(proc->args.decls->decl.type, "void")) /* cast to void* */
 133                                 f_print(fout, "(void*)");
 134                         f_print(fout, "&");
 135                         pvname(proc->proc_name, vp->vers_num);
 136                         f_print(fout, "_arg, clnt);\n");
 137                 } else if (streq(proc->args.decls->decl.type, "void")) {
 138                         f_print(fout, "(clnt);\n");
 139                 } else {
 140                         f_print(fout, "(");
 141                         for (l = proc->args.decls; l != NULL; l = l->next) {
 142                                 pvname(proc->proc_name, vp->vers_num);
 143                                 f_print(fout, "_%s, ", l->decl.name);
 144                         }
 145                         f_print(fout, "clnt);\n");
 146                 }
 147                 f_print(fout, "\tif (result_%d == NULL) {\n", i);
 148                 f_print(fout, "\t\tclnt_perror(clnt, \"call failed:\");\n");
 149                 f_print(fout, "\t}\n");
 150         }
 151
 152         f_print(fout, "\tclnt_destroy( clnt );\n");
 153         f_print(fout, "}\n");
 154 }
 155
 156 static void
 157 write_sample_server(definition * def)
 158 {
 159         version_list   *vp;
 160         proc_list      *proc;
 161
 162         for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
 163                 for (proc = vp->procs; proc != NULL; proc = proc->next) {
 164                         f_print(fout, "\n");
 165                         /*                      if( Cflag )
 166                           f_print( fout, "extern \"C\"{\n");
 167 */
 168                         return_type(proc);
 169                         f_print(fout, "* \n");
 170                         if (Cflag)
 171                                 pvname_svc(proc->proc_name, vp->vers_num);
 172                         else
 173                                 pvname(proc->proc_name, vp->vers_num);
 174                         printarglist(proc, RQSTP, "struct svc_req *");
 175
 176                         f_print(fout, "{\n");
 177                         f_print(fout, "\n\tstatic ");
 178                         if (!streq(proc->res_type, "void"))
 179                                 return_type(proc);
 180                         else
 181                                 f_print(fout, "char*"); /* cannot have void type */
 182                         /* f_print(fout, " result;\n", proc->res_type); */
 183                         f_print(fout, " result;\n");
 184                         f_print(fout,
 185                                 "\n\t/*\n\t * insert server code here\n\t */\n\n");
 186                         if (!streq(proc->res_type, "void"))
 187                                 f_print(fout, "\treturn(&result);\n}\n");
 188                         else    /* cast back to void * */
 189                                 f_print(fout, "\treturn((void*) &result);\n}\n");
 190                         /*                      if( Cflag)
 191                           f_print( fout, "};\n");
 192 */
 193
 194                 }
 195         }
 196 }
 197
 198
 199
 200 static void
 201 return_type(proc_list *plist)
 202 {
 203         ptype( plist->res_prefix, plist->res_type, 1 );
 204 }
 205
 206 void
 207 add_sample_msg(void)
 208 {
 209         f_print(fout, "/*\n");
 210         f_print(fout, " * This is sample code generated by rpcgen.\n");
 211         f_print(fout, " * These are only templates and you can use them\n");
 212         f_print(fout, " * as a guideline for developing your own functions.\n");
 213         f_print(fout, " */\n\n");
 214 }
 215
 216 void
 217 write_sample_clnt_main(void)
 218 {
 219   list *l;
 220   definition *def;
 221   version_list *vp;
 222
 223   f_print(fout, "\n\n" );
 224   if( Cflag )
 225     f_print(fout,"main( int argc, char* argv[] )\n{\n" );
 226   else
 227     f_print(fout, "main(argc, argv)\nint argc;\nchar *argv[];\n{\n" );
 228
 229   f_print(fout, "\tchar *host;");
 230   f_print(fout, "\n\n\tif(argc < 2) {");
 231   f_print(fout, "\n\t\tprintf(\"usage: %%s server_host\\n\", argv[0]);\n" );
 232   f_print(fout, "\t\texit(1);\n\t}");
 233   f_print(fout, "\n\thost = argv[1];\n");
 234
 235   for (l = defined; l != NULL; l = l->next) {
 236                 def = l->val;
 237                 if (def->def_kind != DEF_PROGRAM) {
 238                         continue;
 239                 }
 240                 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
 241                         f_print( fout, "\t" );
 242                         pvname(def->def_name, vp->vers_num);
 243                         f_print( fout, "( host );\n" );
 244                       }
 245                 }
 246   f_print(fout, "}\n");
 247 }