src/rxgen/rpc_svcout.c

   1 /* @(#)rpc_svcout.c     1.2 87/11/24 3.9 RPCSRC */
   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.
   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  * rpc_svcout.c, Server-skeleton outputter for the RPC protocol compiler
  33  * Copyright (C) 1987, Sun Microsytsems, Inc.
  34  */
  35 #include <afsconfig.h>
  36 #include <afs/param.h>
  37
  38 RCSID("$Header$");
  39
  40 #include <stdio.h>
  41 #ifdef HAVE_STRING_H
  42 #include <string.h>
  43 #else
  44 #ifdef HAVE_STRINGS_H
  45 #include <strings.h>
  46 #endif
  47 #endif
  48 #include "rpc_parse.h"
  49 #include "rpc_util.h"
  50
  51 static char RQSTP[] = "rqstp";
  52 static char TRANSP[] = "transp";
  53 static char ARG[] = "argument";
  54 static char RESULT[] = "result";
  55 static char ROUTINE[] = "local";
  56
  57 static write_program();
  58 static printerr();
  59 static printif();
  60
  61 /*
  62  * write most of the service, that is, everything but the registrations.
  63  */
  64 void
  65 write_most()
  66 {
  67         list *l;
  68         definition *def;
  69         version_list *vp;
  70
  71         for (l = defined; l != NULL; l = l->next) {
  72                 def = (definition *) l->val;
  73                 if (def->def_kind == DEF_PROGRAM) {
  74                         for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
  75                                 f_print(fout, "\nstatic void ");
  76                                 pvname(def->def_name, vp->vers_num);
  77                                 f_print(fout, "();");
  78                         }
  79                 }
  80         }
  81         f_print(fout, "\n\n");
  82         f_print(fout, "main()\n");
  83         f_print(fout, "{\n");
  84         f_print(fout, "\tSVCXPRT *%s;\n", TRANSP);
  85         f_print(fout, "\n");
  86         for (l = defined; l != NULL; l = l->next) {
  87                 def = (definition *) l->val;
  88                 if (def->def_kind != DEF_PROGRAM) {
  89                         continue;
  90                 }
  91                 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
  92                         f_print(fout, "\tpmap_unset(%s, %s);\n", def->def_name, vp->vers_name);
  93                 }
  94         }
  95 }
  96
  97
  98 /*
  99  * write a registration for the given transport
 100  */
 101 void
 102 write_register(transp)
 103         char *transp;
 104 {
 105         list *l;
 106         definition *def;
 107         version_list *vp;
 108
 109         f_print(fout, "\n");
 110         f_print(fout, "\t%s = svc%s_create(RPC_ANYSOCK", TRANSP, transp);
 111         if (streq(transp, "tcp")) {
 112                 f_print(fout, ", 0, 0");
 113         }
 114         f_print(fout, ");\n");
 115         f_print(fout, "\tif (%s == NULL) {\n", TRANSP);
 116         f_print(fout, "\t\tfprintf(stderr, \"cannot create %s service.\\n\");\n", transp);
 117         f_print(fout, "\t\texit(1);\n");
 118         f_print(fout, "\t}\n");
 119
 120         for (l = defined; l != NULL; l = l->next) {
 121                 def = (definition *) l->val;
 122                 if (def->def_kind != DEF_PROGRAM) {
 123                         continue;
 124                 }
 125                 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
 126                         f_print(fout,
 127                                 "\tif (!svc_register(%s, %s, %s, ",
 128                                 TRANSP, def->def_name, vp->vers_name);
 129                         pvname(def->def_name, vp->vers_num);
 130                         f_print(fout, ", IPPROTO_%s)) {\n",
 131                                 streq(transp, "udp") ? "UDP" : "TCP");
 132                         f_print(fout,
 133                                 "\t\tfprintf(stderr, \"unable to register (%s, %s, %s).\\n\");\n",
 134                                 def->def_name, vp->vers_name, transp);
 135                         f_print(fout, "\t\texit(1);\n");
 136                         f_print(fout, "\t}\n");
 137                 }
 138         }
 139 }
 140
 141
 142 /*
 143  * write the rest of the service
 144  */
 145 void
 146 write_rest()
 147 {
 148         f_print(fout, "\tsvc_run();\n");
 149         f_print(fout, "\tfprintf(stderr, \"svc_run returned\\n\");\n");
 150         f_print(fout, "\texit(1);\n");
 151         f_print(fout, "}\n");
 152 }
 153
 154 void
 155 write_programs(storage)
 156         char *storage;
 157 {
 158         list *l;
 159         definition *def;
 160
 161         for (l = defined; l != NULL; l = l->next) {
 162                 def = (definition *) l->val;
 163                 if (def->def_kind == DEF_PROGRAM) {
 164                         write_program(def, storage);
 165                 }
 166         }
 167 }
 168
 169
 170 static
 171 write_program(def, storage)
 172         definition *def;
 173         char *storage;
 174 {
 175         version_list *vp;
 176         proc_list *proc;
 177         int filled;
 178
 179         for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
 180                 f_print(fout, "\n");
 181                 if (storage != NULL) {
 182                         f_print(fout, "%s ", storage);
 183                 }
 184                 f_print(fout, "void\n");
 185                 pvname(def->def_name, vp->vers_num);
 186                 f_print(fout, "(%s, %s)\n", RQSTP, TRANSP);
 187                 f_print(fout, " struct svc_req *%s;\n", RQSTP);
 188                 f_print(fout, " SVCXPRT *%s;\n", TRANSP);
 189                 f_print(fout, "{\n");
 190
 191                 filled = 0;
 192                 f_print(fout, "\tunion {\n");
 193                 for (proc = vp->procs; proc != NULL; proc = proc->next) {
 194                         if (streq(proc->arg_type, "void")) {
 195                                 continue;
 196                         }
 197                         filled = 1;
 198                         f_print(fout, "\t\t");
 199                         ptype(proc->arg_prefix, proc->arg_type, 0);
 200                         pvname(proc->proc_name, vp->vers_num);
 201                         f_print(fout, "_arg;\n");
 202                 }
 203                 if (!filled) {
 204                         f_print(fout, "\t\tint fill;\n");
 205                 }
 206                 f_print(fout, "\t} %s;\n", ARG);
 207                 f_print(fout, "\tchar *%s;\n", RESULT);
 208                 f_print(fout, "\tbool_t (*xdr_%s)(), (*xdr_%s)();\n", ARG, RESULT);
 209                 f_print(fout, "\tchar *(*%s)();\n", ROUTINE);
 210                 f_print(fout, "\n");
 211                 f_print(fout, "\tswitch (%s->rq_proc) {\n", RQSTP);
 212
 213                 if (!nullproc(vp->procs)) {
 214                         f_print(fout, "\tcase NULLPROC:\n");
 215                         f_print(fout, "\t\tsvc_sendreply(%s, xdr_void, NULL);\n", TRANSP);
 216                         f_print(fout, "\t\treturn;\n\n");
 217                 }
 218                 for (proc = vp->procs; proc != NULL; proc = proc->next) {
 219                         f_print(fout, "\tcase %s:\n", proc->proc_name);
 220                         f_print(fout, "\t\txdr_%s = xdr_%s;\n", ARG,
 221                                 stringfix(proc->arg_type));
 222                         f_print(fout, "\t\txdr_%s = xdr_%s;\n", RESULT,
 223                                 stringfix(proc->res_type));
 224                         f_print(fout, "\t\t%s = (char *(*)()) ", ROUTINE);
 225                         pvname(proc->proc_name, vp->vers_num);
 226                         f_print(fout, ";\n");
 227                         f_print(fout, "\t\tbreak;\n\n");
 228                 }
 229                 f_print(fout, "\tdefault:\n");
 230                 printerr("noproc", TRANSP);
 231                 f_print(fout, "\t\treturn;\n");
 232                 f_print(fout, "\t}\n");
 233
 234                 f_print(fout, "\tmemset(&%s, 0, sizeof(%s));\n", ARG, ARG);
 235                 printif("getargs", TRANSP, "&", ARG);
 236                 printerr("decode", TRANSP);
 237                 f_print(fout, "\t\treturn;\n");
 238                 f_print(fout, "\t}\n");
 239
 240                 f_print(fout, "\t%s = (*%s)(&%s, %s);\n", RESULT, ROUTINE, ARG,
 241                         RQSTP);
 242                 f_print(fout,
 243                         "\tif (%s != NULL && !svc_sendreply(%s, xdr_%s, %s)) {\n",
 244                         RESULT, TRANSP, RESULT, RESULT);
 245                 printerr("systemerr", TRANSP);
 246                 f_print(fout, "\t}\n");
 247
 248                 printif("freeargs", TRANSP, "&", ARG);
 249                 f_print(fout, "\t\tfprintf(stderr, \"unable to free arguments\\n\");\n");
 250                 f_print(fout, "\t\texit(1);\n");
 251                 f_print(fout, "\t}\n");
 252
 253                 f_print(fout, "}\n\n");
 254         }
 255 }
 256
 257 static
 258 printerr(err, transp)
 259         char *err;
 260         char *transp;
 261 {
 262         f_print(fout, "\t\tsvcerr_%s(%s);\n", err, transp);
 263 }
 264
 265 static
 266 printif(proc, transp, prefix, arg)
 267         char *proc;
 268         char *transp;
 269         char *prefix;
 270         char *arg;
 271 {
 272         f_print(fout, "\tif (!svc_%s(%s, xdr_%s, %s%s)) {\n",
 273                 proc, transp, arg, prefix, arg);
 274 }
 275
 276
 277 nullproc(proc)
 278         proc_list *proc;
 279 {
 280         for (; proc != NULL; proc = proc->next) {
 281                 if (streq(proc->proc_num, "0")) {
 282                         return (1);
 283                 }
 284         }
 285         return (0);
 286 }