usr.bin/rpcgen/rpc_sample.c

   1 /*      $NetBSD: rpc_sample.c,v 1.10 2004/06/20 22:20:16 jmc Exp $      */
   2 /*
   3  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
   4  * unrestricted use provided that this legend is included on all tape
   5  * media and as a part of the software program in whole or part.  Users
   6  * may copy or modify Sun RPC without charge, but are not authorized
   7  * to license or distribute it to anyone else except as part of a product or
   8  * program developed by the user or with the express written consent of
   9  * Sun Microsystems, Inc.
  10  *
  11  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  12  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  13  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  14  *
  15  * Sun RPC is provided with no support and without any obligation on the
  16  * part of Sun Microsystems, Inc. to assist in its use, correction,
  17  * modification or enhancement.
  18  *
  19  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  20  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  21  * OR ANY PART THEREOF.
  22  *
  23  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  24  * or profits or other special, indirect and consequential damages, even if
  25  * Sun has been advised of the possibility of such damages.
  26  *
  27  * Sun Microsystems, Inc.
  28  * 2550 Garcia Avenue
  29  * Mountain View, California  94043
  30  */
  31
  32 #if HAVE_NBTOOL_CONFIG_H
  33 #include "nbtool_config.h"
  34 #endif
  35
  36 #include <sys/cdefs.h>
  37 #if defined(__RCSID) && !defined(lint)
  38 #if 0
  39 static char sccsid[] = "@(#)rpc_sample.c  1.1  90/08/30  (C) 1987 SMI";
  40 #else
  41 __RCSID("$NetBSD: rpc_sample.c,v 1.10 2004/06/20 22:20:16 jmc Exp $");
  42 #endif
  43 #endif
  44
  45 /*
  46  * rpc_sample.c, Sample client-server code outputter for the RPC protocol compiler
  47  */
  48
  49 #include <stdio.h>
  50 #include <string.h>
  51 #include "rpc_scan.h"
  52 #include "rpc_parse.h"
  53 #include "rpc_util.h"
  54
  55 static char RQSTP[] = "rqstp";
  56
  57 static void write_sample_client __P((char *, version_list *));
  58 static void write_sample_server __P((definition *));
  59 static void return_type __P((proc_list *));
  60
  61 void
  62 write_sample_svc(def)
  63         definition *def;
  64 {
  65
  66         if (def->def_kind != DEF_PROGRAM)
  67                 return;
  68         write_sample_server(def);
  69 }
  70
  71
  72 int
  73 write_sample_clnt(def)
  74         definition *def;
  75 {
  76         version_list *vp;
  77         int     count = 0;
  78
  79         if (def->def_kind != DEF_PROGRAM)
  80                 return (0);
  81         /* generate sample code for each version */
  82         for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
  83                 write_sample_client(def->def_name, vp);
  84                 ++count;
  85         }
  86         return (count);
  87 }
  88
  89
  90 static void
  91 write_sample_client(program_name, vp)
  92         char   *program_name;
  93         version_list *vp;
  94 {
  95         proc_list *proc;
  96         decl_list *l;
  97
  98         f_print(fout, "\n\nvoid\n");
  99         pvname(program_name, vp->vers_num);
 100         if (Cflag)
 101                 f_print(fout, "(char *host)\n{\n");
 102         else
 103                 f_print(fout, "(host)\n\tchar *host;\n{\n");
 104         f_print(fout, "\tCLIENT *clnt;\n");
 105
 106         for (proc = vp->procs; proc != NULL; proc = proc->next) {
 107                 /* print out declarations for arguments */
 108                 if (proc->arg_num < 2 && !newstyle) {
 109                         f_print(fout, "\t");
 110                         if (streq(proc->args.decls->decl.type, "void"))
 111                                 f_print(fout, "char "); /* cannot have "void"
 112                                                          * type */
 113                         else
 114                                 ptype(proc->args.decls->decl.prefix, proc->args.decls->decl.type, 1);
 115                         pvname(proc->proc_name, vp->vers_num);
 116                         f_print(fout, "_arg;\n");
 117                 } else {
 118                         if (!streq(proc->args.decls->decl.type, "void")) {
 119                                 for (l = proc->args.decls; l != NULL; l = l->next) {
 120                                         f_print(fout, "\t");
 121                                         ptype(l->decl.prefix, l->decl.type, 1);
 122                                         pvname(proc->proc_name, vp->vers_num);
 123                                         f_print(fout, "_%s;\n", l->decl.name);
 124 /*        pdeclaration(proc->args.argname, &l->decl, 1, ";\n" );*/
 125                                 }
 126                         }
 127                 }
 128                 /* print out declarations for results */
 129                 f_print(fout, "\t");
 130                 if (streq(proc->res_type, "void"))
 131                         f_print(fout, "char");  /* cannot have "void"
 132                                                  * type */
 133                 else
 134                         ptype(proc->res_prefix, proc->res_type, 1);
 135                 if (!Mflag)
 136                         f_print(fout, "*");
 137                 pvname(proc->proc_name, vp->vers_num);
 138                 f_print(fout, "_res;\n");
 139         }
 140         f_print(fout, "\n");
 141
 142         /* generate creation of client handle */
 143         f_print(fout, "\tclnt = clnt_create(host, %s, %s, \"%s\");\n",
 144             program_name, vp->vers_name, tirpcflag ? "netpath" : "udp");
 145         f_print(fout, "\tif (clnt == NULL) {\n");
 146         f_print(fout, "\t\tclnt_pcreateerror(host);\n");
 147         f_print(fout, "\t\texit(1);\n\t}\n");
 148
 149         /* generate calls to procedures */
 150         for (proc = vp->procs; proc != NULL; proc = proc->next) {
 151                 if (Mflag)
 152                         f_print(fout, "\tif (");
 153                 else {
 154                         f_print(fout, "\t");
 155                         pvname(proc->proc_name, vp->vers_num);
 156                         f_print(fout, "_res = ");
 157                 }
 158                 pvname(proc->proc_name, vp->vers_num);
 159                 if (proc->arg_num < 2 && !newstyle) {
 160                         f_print(fout, "(");
 161                         if (streq(proc->args.decls->decl.type, "void")) /* cast to void* */
 162                                 f_print(fout, "(void *)");
 163                         f_print(fout, "&");
 164                         pvname(proc->proc_name, vp->vers_num);
 165                         f_print(fout, "_arg, ");
 166                 } else {
 167                         if (streq(proc->args.decls->decl.type, "void")) {
 168                                 f_print(fout, "(clnt);\n");
 169                         } else {
 170                                 f_print(fout, "(");
 171                                 for (l = proc->args.decls; l != NULL; l = l->next) {
 172                                         pvname(proc->proc_name, vp->vers_num);
 173                                         f_print(fout, "_%s, ", l->decl.name);
 174                                 }
 175                         }
 176                 }
 177                 if (Mflag) {
 178                         f_print(fout, "&");
 179                         pvname(proc->proc_name, vp->vers_num);
 180                         f_print(fout, "_res, clnt) != RPC_SUCCESS)\n");
 181                 } else {
 182                         f_print(fout, "clnt);\n");
 183                         f_print(fout, "\tif (");
 184                         pvname(proc->proc_name, vp->vers_num);
 185                         f_print(fout, "_res == NULL)\n");
 186                 }
 187                 f_print(fout, "\t\tclnt_perror(clnt, \"call failed\");\n");
 188         }
 189
 190         f_print(fout, "\tclnt_destroy(clnt);\n");
 191         f_print(fout, "}\n");
 192 }
 193
 194 static void
 195 write_sample_server(def)
 196         definition *def;
 197 {
 198         version_list *vp;
 199         proc_list *proc;
 200
 201         for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
 202                 for (proc = vp->procs; proc != NULL; proc = proc->next) {
 203                         f_print(fout, "\n");
 204                         if (Mflag)
 205                                 f_print(fout, "bool_t\n");
 206                         else {
 207                                 return_type(proc);
 208                                 f_print(fout, "*\n");
 209                         }
 210                         pvname_svc(proc->proc_name, vp->vers_num);
 211                         printarglist(proc, "result", RQSTP, "struct svc_req *");
 212
 213                         f_print(fout, "{\n");
 214                         if (Mflag) {
 215                                 f_print(fout, "\tbool_t retval = TRUE;\n");
 216                         } else {
 217                                 f_print(fout, "\tstatic ");
 218                                 if (streq(proc->res_type, "void"))
 219                                         f_print(fout, "char "); /* cannot have void type */
 220                                 else
 221                                         return_type(proc);
 222                                 f_print(fout, "result;\n");
 223                         }
 224                         f_print(fout,
 225                             "\n\t/*\n\t * insert server code here\n\t */\n\n");
 226                         if (Mflag) {
 227                                 f_print(fout, "\treturn (retval);\n");
 228                         } else {
 229                                 if (streq(proc->res_type, "void"))
 230                                         f_print(fout, "\treturn ((void *)&result);\n");
 231                                 else
 232                                         f_print(fout, "\treturn (&result);\n");
 233                         }
 234                         f_print(fout, "}\n");
 235                 }
 236         }
 237 }
 238
 239 static void
 240 return_type(plist)
 241         proc_list *plist;
 242 {
 243         ptype(plist->res_prefix, plist->res_type, 1);
 244 }
 245
 246 void
 247 add_sample_msg()
 248 {
 249         f_print(fout, "/*\n");
 250         f_print(fout, " * This is sample code generated by rpcgen.\n");
 251         f_print(fout, " * These are only templates and you can use them\n");
 252         f_print(fout, " * as a guideline for developing your own functions.\n");
 253         f_print(fout, " */\n\n");
 254 }
 255
 256 void
 257 write_sample_clnt_main()
 258 {
 259         list   *l;
 260         definition *def;
 261         version_list *vp;
 262
 263         f_print(fout, "\n\n");
 264         if (Cflag)
 265                 f_print(fout, "int\nmain(int argc, char *argv[])\n{\n");
 266         else
 267                 f_print(fout, "int\nmain(argc, argv)\n\tint argc;\n\tchar *argv[];\n{\n");
 268
 269         f_print(fout, "\tchar *host;");
 270         f_print(fout, "\n\n\tif (argc < 2) {");
 271         f_print(fout, "\n\t\tprintf(\"usage: %%s server_host\\n\", argv[0]);\n");
 272         f_print(fout, "\t\texit(1);\n\t}");
 273         f_print(fout, "\n\thost = argv[1];\n");
 274
 275         for (l = defined; l != NULL; l = l->next) {
 276                 def = l->val;
 277                 if (def->def_kind != DEF_PROGRAM) {
 278                         continue;
 279                 }
 280                 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
 281                         f_print(fout, "\t");
 282                         pvname(def->def_name, vp->vers_num);
 283                         f_print(fout, "(host);\n");
 284                 }
 285         }
 286         f_print(fout, "\texit(0);\n");
 287         f_print(fout, "}\n");
 288 }