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_scan.h"
  49 #include "rpc_parse.h"
  50 #include "rpc_util.h"
  51
  52 static char RQSTP[] = "rqstp";
  53 static char TRANSP[] = "transp";
  54 static char ARG[] = "argument";
  55 static char RESULT[] = "result";
  56 static char ROUTINE[] = "local";
  57
  58 /* static prototypes */
  59 static void write_program(definition *def, char *storage);
  60 static void printerr(char *err, char *transp);
  61 static void printif(char *proc, char *transp, char *prefix, char *arg);
  62
  63
  64 /*
  65  * write most of the service, that is, everything but the registrations.
  66  */
  67 void write_most(void)
  68 {
  69         list *l;
  70         definition *def;
  71         version_list *vp;
  72
  73         for (l = defined; l != NULL; l = l->next) {
  74                 def = (definition *) l->val;
  75                 if (def->def_kind == DEF_PROGRAM) {
  76                         for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
  77                                 f_print(fout, "\nstatic void ");
  78                                 pvname(def->def_name, vp->vers_num);
  79                                 f_print(fout, "();");
  80                         }
  81                 }
  82         }
  83         f_print(fout, "\n\n");
  84         f_print(fout, "main()\n");
  85         f_print(fout, "{\n");
  86         f_print(fout, "\tSVCXPRT *%s;\n", TRANSP);
  87         f_print(fout, "\n");
  88         for (l = defined; l != NULL; l = l->next) {
  89                 def = (definition *) l->val;
  90                 if (def->def_kind != DEF_PROGRAM) {
  91                         continue;
  92                 }
  93                 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
  94                         f_print(fout, "\tpmap_unset(%s, %s);\n", def->def_name, vp->vers_name);
  95                 }
  96         }
  97 }
  98
  99
 100 /*
 101  * write a registration for the given transport
 102  */
 103 void write_register(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 write_rest(void)
 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 write_programs(char *storage)
 154 {
 155         list *l;
 156         definition *def;
 157
 158         for (l = defined; l != NULL; l = l->next) {
 159                 def = (definition *) l->val;
 160                 if (def->def_kind == DEF_PROGRAM) {
 161                         write_program(def, storage);
 162                 }
 163         }
 164 }
 165
 166
 167 static void write_program(definition *def, char *storage)
 168 {
 169         version_list *vp;
 170         proc_list *proc;
 171         int filled;
 172
 173         for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
 174                 f_print(fout, "\n");
 175                 if (storage != NULL) {
 176                         f_print(fout, "%s ", storage);
 177                 }
 178                 f_print(fout, "void\n");
 179                 pvname(def->def_name, vp->vers_num);
 180                 f_print(fout, "(%s, %s)\n", RQSTP, TRANSP);
 181                 f_print(fout, " struct svc_req *%s;\n", RQSTP);
 182                 f_print(fout, " SVCXPRT *%s;\n", TRANSP);
 183                 f_print(fout, "{\n");
 184
 185                 filled = 0;
 186                 f_print(fout, "\tunion {\n");
 187                 for (proc = vp->procs; proc != NULL; proc = proc->next) {
 188                         if (streq(proc->arg_type, "void")) {
 189                                 continue;
 190                         }
 191                         filled = 1;
 192                         f_print(fout, "\t\t");
 193                         ptype(proc->arg_prefix, proc->arg_type, 0);
 194                         pvname(proc->proc_name, vp->vers_num);
 195                         f_print(fout, "_arg;\n");
 196                 }
 197                 if (!filled) {
 198                         f_print(fout, "\t\tint fill;\n");
 199                 }
 200                 f_print(fout, "\t} %s;\n", ARG);
 201                 f_print(fout, "\tchar *%s;\n", RESULT);
 202                 f_print(fout, "\tbool_t (*xdr_%s)(), (*xdr_%s)();\n", ARG, RESULT);
 203                 f_print(fout, "\tchar *(*%s)();\n", ROUTINE);
 204                 f_print(fout, "\n");
 205                 f_print(fout, "\tswitch (%s->rq_proc) {\n", RQSTP);
 206
 207                 if (!nullproc(vp->procs)) {
 208                         f_print(fout, "\tcase NULLPROC:\n");
 209                         f_print(fout, "\t\tsvc_sendreply(%s, xdr_void, NULL);\n", TRANSP);
 210                         f_print(fout, "\t\treturn;\n\n");
 211                 }
 212                 for (proc = vp->procs; proc != NULL; proc = proc->next) {
 213                         f_print(fout, "\tcase %s:\n", proc->proc_name);
 214                         f_print(fout, "\t\txdr_%s = xdr_%s;\n", ARG,
 215                                 stringfix(proc->arg_type));
 216                         f_print(fout, "\t\txdr_%s = xdr_%s;\n", RESULT,
 217                                 stringfix(proc->res_type));
 218                         f_print(fout, "\t\t%s = (char *(*)()) ", ROUTINE);
 219                         pvname(proc->proc_name, vp->vers_num);
 220                         f_print(fout, ";\n");
 221                         f_print(fout, "\t\tbreak;\n\n");
 222                 }
 223                 f_print(fout, "\tdefault:\n");
 224                 printerr("noproc", TRANSP);
 225                 f_print(fout, "\t\treturn;\n");
 226                 f_print(fout, "\t}\n");
 227
 228                 f_print(fout, "\tmemset(&%s, 0, sizeof(%s));\n", ARG, ARG);
 229                 printif("getargs", TRANSP, "&", ARG);
 230                 printerr("decode", TRANSP);
 231                 f_print(fout, "\t\treturn;\n");
 232                 f_print(fout, "\t}\n");
 233
 234                 f_print(fout, "\t%s = (*%s)(&%s, %s);\n", RESULT, ROUTINE, ARG,
 235                         RQSTP);
 236                 f_print(fout,
 237                         "\tif (%s != NULL && !svc_sendreply(%s, xdr_%s, %s)) {\n",
 238                         RESULT, TRANSP, RESULT, RESULT);
 239                 printerr("systemerr", TRANSP);
 240                 f_print(fout, "\t}\n");
 241
 242                 printif("freeargs", TRANSP, "&", ARG);
 243                 f_print(fout, "\t\tfprintf(stderr, \"unable to free arguments\\n\");\n");
 244                 f_print(fout, "\t\texit(1);\n");
 245                 f_print(fout, "\t}\n");
 246
 247                 f_print(fout, "}\n\n");
 248         }
 249 }
 250
 251 static void printerr(char *err, char *transp)
 252 {
 253         f_print(fout, "\t\tsvcerr_%s(%s);\n", err, transp);
 254 }
 255
 256 static void printif(char *proc, char *transp, char *prefix, char *arg)
 257 {
 258         f_print(fout, "\tif (!svc_%s(%s, xdr_%s, %s%s)) {\n",
 259                 proc, transp, arg, prefix, arg);
 260 }
 261
 262
 263 int nullproc(proc_list *proc)
 264 {
 265         for (; proc != NULL; proc = proc->next) {
 266                 if (streq(proc->proc_num, "0")) {
 267                         return (1);
 268                 }
 269         }
 270         return (0);
 271 }