tools/rpcgen/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 #if 0
  32 static char sccsid[] = "@(#)rpc_sample.c  1.1  90/08/30  (C) 1987 SMI";
  33
  34 #endif
  35
  36 /*
  37  * rpc_sample.c, Sample client-server code outputter for the RPC protocol compiler
  38  */
  39
  40 #include <stdio.h>
  41 #include <string.h>
  42 #include "rpc_parse.h"
  43 #include "rpc_util.h"
  44
  45
  46 static char RQSTP[] = "rqstp";
  47
  48 static void     write_sample_client(char *program_name, version_list *vp);
  49 static void     write_sample_server(definition * def);
  50 static void     return_type(proc_list *plist);
  51
  52 void
  53 write_sample_svc(definition *def)
  54 {
  55         if (def->def_kind != DEF_PROGRAM)
  56                 return;
  57         write_sample_server(def);
  58 }
  59
  60
  61 int
  62 write_sample_clnt(definition *def)
  63 {
  64         version_list   *vp;
  65         int             count = 0;
  66
  67         if (def->def_kind != DEF_PROGRAM)
  68                 return (0);
  69         /* generate sample code for each version */
  70         for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
  71                 write_sample_client(def->def_name, vp);
  72                 ++count;
  73         }
  74         return (count);
  75 }
  76
  77
  78 static void
  79 write_sample_client(char *program_name, version_list *vp)
  80 {
  81         proc_list      *proc;
  82         int             i;
  83         decl_list      *l;
  84
  85         f_print(fout, "\n\nvoid\n");
  86         pvname(program_name, vp->vers_num);
  87         if (Cflag)
  88                 f_print(fout, "( char* host )\n{\n");
  89         else
  90                 f_print(fout, "(host)\nchar *host;\n{\n");
  91         f_print(fout, "\tCLIENT *clnt;\n");
  92
  93         i = 0;
  94         for (proc = vp->procs; proc != NULL; proc = proc->next) {
  95                 f_print(fout, "\t");
  96                 ptype(proc->res_prefix, proc->res_type, 1);
  97                 f_print(fout, " *result_%d;\n", ++i);
  98                 /* print out declarations for arguments */
  99                 if (proc->arg_num < 2 && !newstyle) {
 100                         f_print(fout, "\t");
 101                         if (!streq(proc->args.decls->decl.type, "void"))
 102                                 ptype(proc->args.decls->decl.prefix, proc->args.decls->decl.type, 1);
 103                         else
 104                                 f_print(fout, "char* ");        /* cannot have "void" type */
 105                         f_print(fout, " ");
 106                         pvname(proc->proc_name, vp->vers_num);
 107                         f_print(fout, "_arg;\n");
 108                 } else if (!streq(proc->args.decls->decl.type, "void")) {
 109                         for (l = proc->args.decls; l != NULL; l = l->next) {
 110                                 f_print(fout, "\t");
 111                                 ptype(l->decl.prefix, l->decl.type, 1);
 112                                 f_print(fout, " ");
 113                                 pvname(proc->proc_name, vp->vers_num);
 114                                 f_print(fout, "_%s;\n", l->decl.name);
 115                                 /*        pdeclaration(proc->args.argname, &l->decl, 1, ";\n" );*/
 116                         }
 117                 }
 118         }
 119
 120         /* generate creation of client handle */
 121         f_print(fout, "\tclnt = clnt_create(host, %s, %s, \"%s\");\n",
 122                 program_name, vp->vers_name, tirpcflag ? "netpath" : "udp");
 123         f_print(fout, "\tif (clnt == NULL) {\n");
 124         f_print(fout, "\t\tclnt_pcreateerror(host);\n");
 125         f_print(fout, "\t\texit(1);\n\t}\n");
 126
 127         /* generate calls to procedures */
 128         i = 0;
 129         for (proc = vp->procs; proc != NULL; proc = proc->next) {
 130                 f_print(fout, "\tresult_%d = ", ++i);
 131                 pvname(proc->proc_name, vp->vers_num);
 132                 if (proc->arg_num < 2 && !newstyle) {
 133                         f_print(fout, "(");
 134                         if (streq(proc->args.decls->decl.type, "void")) /* cast to void* */
 135                                 f_print(fout, "(void*)");
 136                         f_print(fout, "&");
 137                         pvname(proc->proc_name, vp->vers_num);
 138                         f_print(fout, "_arg, clnt);\n");
 139                 } else if (streq(proc->args.decls->decl.type, "void")) {
 140                         f_print(fout, "(clnt);\n");
 141                 } else {
 142                         f_print(fout, "(");
 143                         for (l = proc->args.decls; l != NULL; l = l->next) {
 144                                 pvname(proc->proc_name, vp->vers_num);
 145                                 f_print(fout, "_%s, ", l->decl.name);
 146                         }
 147                         f_print(fout, "clnt);\n");
 148                 }
 149                 f_print(fout, "\tif (result_%d == NULL) {\n", i);
 150                 f_print(fout, "\t\tclnt_perror(clnt, \"call failed:\");\n");
 151                 f_print(fout, "\t}\n");
 152         }
 153
 154         f_print(fout, "\tclnt_destroy( clnt );\n");
 155         f_print(fout, "}\n");
 156 }
 157
 158 static void
 159 write_sample_server(definition * def)
 160 {
 161         version_list   *vp;
 162         proc_list      *proc;
 163
 164         for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
 165                 for (proc = vp->procs; proc != NULL; proc = proc->next) {
 166                         f_print(fout, "\n");
 167                         /*                      if( Cflag )
 168                           f_print( fout, "extern \"C\"{\n");
 169 */
 170                         return_type(proc);
 171                         f_print(fout, "* \n");
 172                         if (Cflag)
 173                                 pvname_svc(proc->proc_name, vp->vers_num);
 174                         else
 175                                 pvname(proc->proc_name, vp->vers_num);
 176                         printarglist(proc, RQSTP, "struct svc_req *");
 177
 178                         f_print(fout, "{\n");
 179                         f_print(fout, "\n\tstatic ");
 180                         if (!streq(proc->res_type, "void"))
 181                                 return_type(proc);
 182                         else
 183                                 f_print(fout, "char*"); /* cannot have void type */
 184                         /* f_print(fout, " result;\n", proc->res_type); */
 185                         f_print(fout, " result;\n");
 186                         f_print(fout,
 187                                 "\n\t/*\n\t * insert server code here\n\t */\n\n");
 188                         if (!streq(proc->res_type, "void"))
 189                                 f_print(fout, "\treturn(&result);\n}\n");
 190                         else    /* cast back to void * */
 191                                 f_print(fout, "\treturn((void*) &result);\n}\n");
 192                         /*                      if( Cflag)
 193                           f_print( fout, "};\n");
 194 */
 195
 196                 }
 197         }
 198 }
 199
 200
 201
 202 static void
 203 return_type(proc_list *plist)
 204 {
 205         ptype( plist->res_prefix, plist->res_type, 1 );
 206 }
 207
 208 void
 209 add_sample_msg(void)
 210 {
 211         f_print(fout, "/*\n");
 212         f_print(fout, " * This is sample code generated by rpcgen.\n");
 213         f_print(fout, " * These are only templates and you can use them\n");
 214         f_print(fout, " * as a guideline for developing your own functions.\n");
 215         f_print(fout, " */\n\n");
 216 }
 217
 218 void
 219 write_sample_clnt_main(void)
 220 {
 221   list *l;
 222   definition *def;
 223   version_list *vp;
 224
 225   f_print(fout, "\n\n" );
 226   if( Cflag )
 227     f_print(fout,"main( int argc, char* argv[] )\n{\n" );
 228   else
 229     f_print(fout, "main(argc, argv)\nint argc;\nchar *argv[];\n{\n" );
 230
 231   f_print(fout, "\tchar *host;");
 232   f_print(fout, "\n\n\tif(argc < 2) {");
 233   f_print(fout, "\n\t\tprintf(\"usage: %%s server_host\\n\", argv[0]);\n" );
 234   f_print(fout, "\t\texit(1);\n\t}");
 235   f_print(fout, "\n\thost = argv[1];\n");
 236
 237   for (l = defined; l != NULL; l = l->next) {
 238                 def = l->val;
 239                 if (def->def_kind != DEF_PROGRAM) {
 240                         continue;
 241                 }
 242                 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
 243                         f_print( fout, "\t" );
 244                         pvname(def->def_name, vp->vers_num);
 245                         f_print( fout, "( host );\n" );
 246                       }
 247                 }
 248   f_print(fout, "}\n");
 249 }