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