sunrpc/rpc_svcout.c

   1 /* @(#)rpc_svcout.c     2.1 88/08/01 4.0 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 #ifndef lint
  31 static char sccsid[] = "@(#)rpc_svcout.c 1.6 87/06/24 (C) 1987 SMI";
  32 #endif
  33
  34 /*
  35  * rpc_svcout.c, Server-skeleton outputter for the RPC protocol compiler
  36  * Copyright (C) 1987, Sun Microsytsems, Inc.
  37  */
  38 #include <stdio.h>
  39 #include <strings.h>
  40 #include "rpc_parse.h"
  41 #include "rpc_util.h"
  42
  43 static char RQSTP[] = "rqstp";
  44 static char TRANSP[] = "transp";
  45 static char ARG[] = "argument";
  46 static char RESULT[] = "result";
  47 static char ROUTINE[] = "local";
  48
  49
  50 /*
  51  * write most of the service, that is, everything but the registrations.
  52  */
  53 void
  54 write_most()
  55 {
  56         list *l;
  57         definition *def;
  58         version_list *vp;
  59
  60         for (l = defined; l != NULL; l = l->next) {
  61                 def = (definition *) l->val;
  62                 if (def->def_kind == DEF_PROGRAM) {
  63                         for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
  64                                 f_print(fout, "\nstatic void ");
  65                                 pvname(def->def_name, vp->vers_num);
  66                                 f_print(fout, "();");
  67                         }
  68                 }
  69         }
  70         f_print(fout, "\n\n");
  71         f_print(fout, "main()\n");
  72         f_print(fout, "{\n");
  73         f_print(fout, "\tSVCXPRT *%s;\n", TRANSP);
  74         f_print(fout, "\n");
  75         for (l = defined; l != NULL; l = l->next) {
  76                 def = (definition *) l->val;
  77                 if (def->def_kind != DEF_PROGRAM) {
  78                         continue;
  79                 }
  80                 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
  81                         f_print(fout, "\t(void)pmap_unset(%s, %s);\n", def->def_name, vp->vers_name);
  82                 }
  83         }
  84 }
  85
  86
  87 /*
  88  * write a registration for the given transport
  89  */
  90 void
  91 write_register(transp)
  92         char *transp;
  93 {
  94         list *l;
  95         definition *def;
  96         version_list *vp;
  97
  98         f_print(fout, "\n");
  99         f_print(fout, "\t%s = svc%s_create(RPC_ANYSOCK", TRANSP, transp);
 100         if (streq(transp, "tcp")) {
 101                 f_print(fout, ", 0, 0");
 102         }
 103         f_print(fout, ");\n");
 104         f_print(fout, "\tif (%s == NULL) {\n", TRANSP);
 105         f_print(fout, "\t\t(void)fprintf(stderr, \"cannot create %s service.\\n\");\n", transp);
 106         f_print(fout, "\t\texit(1);\n");
 107         f_print(fout, "\t}\n");
 108
 109         for (l = defined; l != NULL; l = l->next) {
 110                 def = (definition *) l->val;
 111                 if (def->def_kind != DEF_PROGRAM) {
 112                         continue;
 113                 }
 114                 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
 115                         f_print(fout,
 116                                 "\tif (!svc_register(%s, %s, %s, ",
 117                                 TRANSP, def->def_name, vp->vers_name);
 118                         pvname(def->def_name, vp->vers_num);
 119                         f_print(fout, ", IPPROTO_%s)) {\n",
 120                                 streq(transp, "udp") ? "UDP" : "TCP");
 121                         f_print(fout,
 122                                 "\t\t(void)fprintf(stderr, \"unable to register (%s, %s, %s).\\n\");\n",
 123                                 def->def_name, vp->vers_name, transp);
 124                         f_print(fout, "\t\texit(1);\n");
 125                         f_print(fout, "\t}\n");
 126                 }
 127         }
 128 }
 129
 130
 131 /*
 132  * write the rest of the service
 133  */
 134 void
 135 write_rest()
 136 {
 137         f_print(fout, "\tsvc_run();\n");
 138         f_print(fout, "\t(void)fprintf(stderr, \"svc_run returned\\n\");\n");
 139         f_print(fout, "\texit(1);\n");
 140         f_print(fout, "}\n");
 141 }
 142
 143 void
 144 write_programs(storage)
 145         char *storage;
 146 {
 147         list *l;
 148         definition *def;
 149
 150         for (l = defined; l != NULL; l = l->next) {
 151                 def = (definition *) l->val;
 152                 if (def->def_kind == DEF_PROGRAM) {
 153                         write_program(def, storage);
 154                 }
 155         }
 156 }
 157
 158
 159 static
 160 write_program(def, storage)
 161         definition *def;
 162         char *storage;
 163 {
 164         version_list *vp;
 165         proc_list *proc;
 166         int filled;
 167
 168         for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
 169                 f_print(fout, "\n");
 170                 if (storage != NULL) {
 171                         f_print(fout, "%s ", storage);
 172                 }
 173                 f_print(fout, "void\n");
 174                 pvname(def->def_name, vp->vers_num);
 175                 f_print(fout, "(%s, %s)\n", RQSTP, TRANSP);
 176                 f_print(fout, " struct svc_req *%s;\n", RQSTP);
 177                 f_print(fout, " SVCXPRT *%s;\n", TRANSP);
 178                 f_print(fout, "{\n");
 179
 180                 filled = 0;
 181                 f_print(fout, "\tunion {\n");
 182                 for (proc = vp->procs; proc != NULL; proc = proc->next) {
 183                         if (streq(proc->arg_type, "void")) {
 184                                 continue;
 185                         }
 186                         filled = 1;
 187                         f_print(fout, "\t\t");
 188                         ptype(proc->arg_prefix, proc->arg_type, 0);
 189                         pvname(proc->proc_name, vp->vers_num);
 190                         f_print(fout, "_arg;\n");
 191                 }
 192                 if (!filled) {
 193                         f_print(fout, "\t\tint fill;\n");
 194                 }
 195                 f_print(fout, "\t} %s;\n", ARG);
 196                 f_print(fout, "\tchar *%s;\n", RESULT);
 197                 f_print(fout, "\tbool_t (*xdr_%s)(), (*xdr_%s)();\n", ARG, RESULT);
 198                 f_print(fout, "\tchar *(*%s)();\n", ROUTINE);
 199                 f_print(fout, "\n");
 200                 f_print(fout, "\tswitch (%s->rq_proc) {\n", RQSTP);
 201
 202                 if (!nullproc(vp->procs)) {
 203                         f_print(fout, "\tcase NULLPROC:\n");
 204                         f_print(fout, "\t\t(void)svc_sendreply(%s, xdr_void, (char *)NULL);\n", TRANSP);
 205                         f_print(fout, "\t\treturn;\n\n");
 206                 }
 207                 for (proc = vp->procs; proc != NULL; proc = proc->next) {
 208                         f_print(fout, "\tcase %s:\n", proc->proc_name);
 209                         f_print(fout, "\t\txdr_%s = xdr_%s;\n", ARG,
 210                                 stringfix(proc->arg_type));
 211                         f_print(fout, "\t\txdr_%s = xdr_%s;\n", RESULT,
 212                                 stringfix(proc->res_type));
 213                         f_print(fout, "\t\t%s = (char *(*)()) ", ROUTINE);
 214                         pvname(proc->proc_name, vp->vers_num);
 215                         f_print(fout, ";\n");
 216                         f_print(fout, "\t\tbreak;\n\n");
 217                 }
 218                 f_print(fout, "\tdefault:\n");
 219                 printerr("noproc", TRANSP);
 220                 f_print(fout, "\t\treturn;\n");
 221                 f_print(fout, "\t}\n");
 222
 223                 f_print(fout, "\tbzero((char *)&%s, sizeof(%s));\n", ARG, ARG);
 224                 printif("getargs", TRANSP, "&", ARG);
 225                 printerr("decode", TRANSP);
 226                 f_print(fout, "\t\treturn;\n");
 227                 f_print(fout, "\t}\n");
 228
 229                 f_print(fout, "\t%s = (*%s)(&%s, %s);\n", RESULT, ROUTINE, ARG,
 230                         RQSTP);
 231                 f_print(fout,
 232                         "\tif (%s != NULL && !svc_sendreply(%s, xdr_%s, %s)) {\n",
 233                         RESULT, TRANSP, RESULT, RESULT);
 234                 printerr("systemerr", TRANSP);
 235                 f_print(fout, "\t}\n");
 236
 237                 printif("freeargs", TRANSP, "&", ARG);
 238                 f_print(fout, "\t\t(void)fprintf(stderr, \"unable to free arguments\\n\");\n");
 239                 f_print(fout, "\t\texit(1);\n");
 240                 f_print(fout, "\t}\n");
 241
 242                 f_print(fout, "}\n\n");
 243         }
 244 }
 245
 246 static
 247 printerr(err, transp)
 248         char *err;
 249         char *transp;
 250 {
 251         f_print(fout, "\t\tsvcerr_%s(%s);\n", err, transp);
 252 }
 253
 254 static
 255 printif(proc, transp, prefix, arg)
 256         char *proc;
 257         char *transp;
 258         char *prefix;
 259         char *arg;
 260 {
 261         f_print(fout, "\tif (!svc_%s(%s, xdr_%s, %s%s)) {\n",
 262                 proc, transp, arg, prefix, arg);
 263 }
 264
 265
 266 nullproc(proc)
 267         proc_list *proc;
 268 {
 269         for (; proc != NULL; proc = proc->next) {
 270                 if (streq(proc->proc_num, "0")) {
 271                         return (1);
 272                 }
 273         }
 274         return (0);
 275 }