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