sunrpc/rpc_sample.c

   1 /*
   2  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
   3  * unrestricted use provided that this legend is included on all tape
   4  * media and as a part of the software program in whole or part.  Users
   5  * may copy or modify Sun RPC without charge, but are not authorized
   6  * to license or distribute it to anyone else except as part of a product or
   7  * program developed by the user or with the express written consent of
   8  * Sun Microsystems, Inc.
   9  *
  10  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  11  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  12  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  13  *
  14  * Sun RPC is provided with no support and without any obligation on the
  15  * part of Sun Microsystems, Inc. to assist in its use, correction,
  16  * modification or enhancement.
  17  *
  18  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  19  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  20  * OR ANY PART THEREOF.
  21  *
  22  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  23  * or profits or other special, indirect and consequential damages, even if
  24  * Sun has been advised of the possibility of such damages.
  25  *
  26  * Sun Microsystems, Inc.
  27  * 2550 Garcia Avenue
  28  * Mountain View, California  94043
  29  */
  30
  31 /*
  32  * From: @(#)rpc_sample.c  1.1  90/08/30  (C) 1987 SMI
  33  */
  34 char sample_rcsid[] =
  35   "$Id$";
  36
  37 /*
  38  * rpc_sample.c, Sample client-server code outputter for the RPC protocol compiler
  39  */
  40
  41 #include <stdio.h>
  42 #include <string.h>
  43 #include "rpc_parse.h"
  44 #include "rpc_util.h"
  45 #include "proto.h"
  46
  47
  48 static char RQSTP[] = "rqstp";
  49
  50 static void write_sample_client(const char *program_name, version_list *vp);
  51 static void write_sample_server(definition *def);
  52 static void return_type(proc_list *plist);
  53
  54
  55 void
  56 write_sample_svc(definition *def)
  57 {
  58
  59         if (def->def_kind != DEF_PROGRAM)
  60           return;
  61         write_sample_server(def);
  62 }
  63
  64
  65 int
  66 write_sample_clnt(definition *def)
  67 {
  68         version_list *vp;
  69         int count = 0;
  70
  71         if (def->def_kind != DEF_PROGRAM)
  72           return( 0 );
  73         /* generate sample code for each version */
  74         for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
  75           write_sample_client(def->def_name, vp );
  76           ++count;
  77         }
  78         return( count );
  79 }
  80
  81
  82 static void
  83 write_sample_client(const char *program_name, version_list *vp)
  84 {
  85   proc_list *proc;
  86   int i;
  87   decl_list *l;
  88
  89   f_print(fout, "\n\nvoid\n" );
  90   pvname( program_name, vp->vers_num );
  91   if( Cflag )
  92     f_print(fout,"( char* host )\n{\n" );
  93   else
  94     f_print(fout, "(host)\nchar *host;\n{\n" );
  95   f_print(fout, "\tCLIENT *clnt;\n");
  96
  97   i = 0;
  98   for (proc = vp->procs; proc != NULL; proc = proc->next) {
  99       f_print(fout, "\t");
 100       ptype(proc->res_prefix, proc->res_type, 1);
 101       f_print(fout, " *result_%d;\n",++i);
 102       /* print out declarations for arguments */
 103       if( proc->arg_num < 2 && !newstyle) {
 104         f_print( fout, "\t" );
 105         if( !streq( proc->args.decls->decl.type, "void") )
 106           ptype(proc->args.decls->decl.prefix, proc->args.decls->decl.type, 1);
 107         else
 108           f_print(fout, "char* ");  /* cannot have "void" type */
 109         f_print(fout, " ");
 110         pvname( proc->proc_name, vp->vers_num );
 111         f_print(fout, "_arg;\n");
 112       } else if (!streq( proc->args.decls->decl.type, "void")) {
 113         for (l = proc->args.decls; l != NULL; l = l->next) {
 114           f_print( fout, "\t" );
 115           ptype(l->decl.prefix, l->decl.type, 1);
 116           f_print( fout, " ");
 117           pvname( proc->proc_name, vp->vers_num );
 118           f_print(fout, "_%s;\n", l->decl.name );
 119 /*        pdeclaration(proc->args.argname, &l->decl, 1, ";\n" );*/
 120         }
 121       }
 122     }
 123
 124   /* generate creation of client handle */
 125   f_print(fout, "\tclnt = clnt_create(host, %s, %s, \"%s\");\n",
 126           program_name, vp->vers_name, tirpcflag? "netpath" : "udp");
 127   f_print(fout, "\tif (clnt == NULL) {\n");
 128   f_print(fout, "\t\tclnt_pcreateerror(host);\n");
 129   f_print(fout, "\t\texit(1);\n\t}\n");
 130
 131   /* generate calls to procedures */
 132   i = 0;
 133   for (proc = vp->procs; proc != NULL; proc = proc->next) {
 134       f_print(fout, "\tresult_%d = ",++i);
 135       pvname(proc->proc_name, vp->vers_num);
 136       if (proc->arg_num < 2 && !newstyle) {
 137         f_print(fout, "(" );
 138         if( streq( proc->args.decls->decl.type, "void") )  /* cast to void* */
 139           f_print(fout, "(void*)");
 140         f_print(fout, "&" );
 141         pvname(proc->proc_name, vp->vers_num );
 142         f_print(fout, "_arg, clnt);\n");
 143       } else if (streq( proc->args.decls->decl.type, "void")) {
 144             f_print(fout, "(clnt);\n");
 145           }
 146       else {
 147         f_print(fout, "(");
 148         for (l = proc->args.decls;  l != NULL; l = l->next) {
 149           pvname( proc->proc_name, vp->vers_num );
 150           f_print(fout, "_%s, ", l->decl.name);
 151         }
 152         f_print(fout, "clnt);\n");
 153       }
 154       f_print(fout, "\tif (result_%d == NULL) {\n", i);
 155       f_print(fout, "\t\tclnt_perror(clnt, \"call failed:\");\n");
 156       f_print(fout, "\t}\n");
 157     }
 158
 159   f_print(fout, "\tclnt_destroy( clnt );\n" );
 160   f_print(fout, "}\n");
 161 }
 162
 163 static void
 164 write_sample_server(definition *def)
 165 {
 166         version_list *vp;
 167         proc_list *proc;
 168
 169         for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
 170                 for (proc = vp->procs; proc != NULL; proc = proc->next) {
 171                         f_print(fout, "\n");
 172 /*                      if( Cflag )
 173                           f_print( fout, "extern \"C\"{\n");
 174 */
 175                         return_type(proc);
 176                         f_print(fout, "* \n");
 177                         if( Cflag )
 178                           pvname_svc(proc->proc_name, vp->vers_num);
 179                         else
 180                           pvname(proc->proc_name, vp->vers_num);
 181                         printarglist( proc, RQSTP, "struct svc_req *" );
 182
 183                         f_print(fout, "{\n");
 184                         f_print(fout, "\n\tstatic ");
 185                         if( !streq( proc->res_type, "void") )
 186                           return_type(proc);
 187                         else
 188                           f_print(fout, "char*" );  /* cannot have void type */
 189                         f_print(fout, " result;\n" /*, proc->res_type*/ /*?*/);
 190                         f_print(fout,
 191                                 "\n\t/*\n\t * insert server code here\n\t */\n\n");
 192                         if( !streq( proc->res_type, "void") )
 193                           f_print(fout, "\treturn(&result);\n}\n");
 194                         else  /* cast back to void * */
 195                           f_print(fout, "\treturn((void*) &result);\n}\n");
 196 /*                      if( Cflag)
 197                           f_print( fout, "};\n");
 198 */
 199
 200                 }
 201         }
 202 }
 203
 204
 205
 206 static void
 207 return_type(proc_list *plist)
 208 {
 209   ptype( plist->res_prefix, plist->res_type, 1 );
 210 }
 211
 212 void
 213 add_sample_msg(void)
 214 {
 215         f_print(fout, "/*\n");
 216         f_print(fout, " * This is sample code generated by rpcgen.\n");
 217         f_print(fout, " * These are only templates and you can use them\n");
 218         f_print(fout, " * as a guideline for developing your own functions.\n");
 219         f_print(fout, " */\n\n");
 220 }
 221
 222 void
 223 write_sample_clnt_main(void)
 224 {
 225   list *l;
 226   definition *def;
 227   version_list *vp;
 228
 229   f_print(fout, "\n\n" );
 230   if( Cflag )
 231     f_print(fout,"main( int argc, char* argv[] )\n{\n" );
 232   else
 233     f_print(fout, "main(argc, argv)\nint argc;\nchar *argv[];\n{\n" );
 234
 235   f_print(fout, "\tchar *host;");
 236   f_print(fout, "\n\n\tif(argc < 2) {");
 237   f_print(fout, "\n\t\tprintf(\"usage: %%s server_host\\n\", argv[0]);\n" );
 238   f_print(fout, "\t\texit(1);\n\t}");
 239   f_print(fout, "\n\thost = argv[1];\n");
 240
 241   for (l = defined; l != NULL; l = l->next) {
 242                 def = l->val;
 243                 if (def->def_kind != DEF_PROGRAM) {
 244                         continue;
 245                 }
 246                 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
 247                         f_print( fout, "\t" );
 248                         pvname(def->def_name, vp->vers_num);
 249                         f_print( fout, "( host );\n" );
 250                       }
 251                 }
 252   f_print(fout, "}\n");
 253 }