sunrpc/rpc_main.c

   1 /* @(#)rpc_main.c       2.2 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_main.c 1.7 87/06/24 (C) 1987 SMI";
  32 #endif
  33
  34 /*
  35  * rpc_main.c, Top level of the RPC protocol compiler.
  36  * Copyright (C) 1987, Sun Microsystems, Inc.
  37  */
  38
  39 #include <stdio.h>
  40 #include <strings.h>
  41 #include <sys/file.h>
  42 #include "rpc_util.h"
  43 #include "rpc_parse.h"
  44 #include "rpc_scan.h"
  45
  46 #define EXTEND  1               /* alias for TRUE */
  47
  48 struct commandline {
  49         int cflag;
  50         int hflag;
  51         int lflag;
  52         int sflag;
  53         int mflag;
  54         char *infile;
  55         char *outfile;
  56 };
  57
  58 static char *cmdname;
  59 static char CPP[] = "/lib/cpp";
  60 static char CPPFLAGS[] = "-C";
  61 static char *allv[] = {
  62         "rpcgen", "-s", "udp", "-s", "tcp",
  63 };
  64 static int allc = sizeof(allv)/sizeof(allv[0]);
  65
  66 main(argc, argv)
  67         int argc;
  68         char *argv[];
  69
  70 {
  71         struct commandline cmd;
  72
  73         if (!parseargs(argc, argv, &cmd)) {
  74                 f_print(stderr,
  75                         "usage: %s infile\n", cmdname);
  76                 f_print(stderr,
  77                         "       %s [-c | -h | -l | -m] [-o outfile] [infile]\n",
  78                         cmdname);
  79                 f_print(stderr,
  80                         "       %s [-s udp|tcp]* [-o outfile] [infile]\n",
  81                         cmdname);
  82                 exit(1);
  83         }
  84         if (cmd.cflag) {
  85                 c_output(cmd.infile, "-DRPC_XDR", !EXTEND, cmd.outfile);
  86         } else if (cmd.hflag) {
  87                 h_output(cmd.infile, "-DRPC_HDR", !EXTEND, cmd.outfile);
  88         } else if (cmd.lflag) {
  89                 l_output(cmd.infile, "-DRPC_CLNT", !EXTEND, cmd.outfile);
  90         } else if (cmd.sflag || cmd.mflag) {
  91                 s_output(argc, argv, cmd.infile, "-DRPC_SVC", !EXTEND,
  92                          cmd.outfile, cmd.mflag);
  93         } else {
  94                 c_output(cmd.infile, "-DRPC_XDR", EXTEND, "_xdr.c");
  95                 reinitialize();
  96                 h_output(cmd.infile, "-DRPC_HDR", EXTEND, ".h");
  97                 reinitialize();
  98                 l_output(cmd.infile, "-DRPC_CLNT", EXTEND, "_clnt.c");
  99                 reinitialize();
 100                 s_output(allc, allv, cmd.infile, "-DRPC_SVC", EXTEND,
 101                          "_svc.c", cmd.mflag);
 102         }
 103         exit(0);
 104 }
 105
 106 /*
 107  * add extension to filename
 108  */
 109 static char *
 110 extendfile(file, ext)
 111         char *file;
 112         char *ext;
 113 {
 114         char *res;
 115         char *p;
 116
 117         res = alloc(strlen(file) + strlen(ext) + 1);
 118         if (res == NULL) {
 119                 abort();
 120         }
 121         p = rindex(file, '.');
 122         if (p == NULL) {
 123                 p = file + strlen(file);
 124         }
 125         (void) strcpy(res, file);
 126         (void) strcpy(res + (p - file), ext);
 127         return (res);
 128 }
 129
 130 /*
 131  * Open output file with given extension
 132  */
 133 static
 134 open_output(infile, outfile)
 135         char *infile;
 136         char *outfile;
 137 {
 138         if (outfile == NULL) {
 139                 fout = stdout;
 140                 return;
 141         }
 142         if (infile != NULL && streq(outfile, infile)) {
 143                 f_print(stderr, "%s: output would overwrite %s\n", cmdname,
 144                         infile);
 145                 crash();
 146         }
 147         fout = fopen(outfile, "w");
 148         if (fout == NULL) {
 149                 f_print(stderr, "%s: unable to open ", cmdname);
 150                 perror(outfile);
 151                 crash();
 152         }
 153         record_open(outfile);
 154 }
 155
 156 /*
 157  * Open input file with given define for C-preprocessor
 158  */
 159 static
 160 open_input(infile, define)
 161         char *infile;
 162         char *define;
 163 {
 164         int pd[2];
 165
 166         infilename = (infile == NULL) ? "<stdin>" : infile;
 167         (void) pipe(pd);
 168         switch (fork()) {
 169         case 0:
 170                 (void) close(1);
 171                 (void) dup2(pd[1], 1);
 172                 (void) close(pd[0]);
 173                 execl(CPP, CPP, CPPFLAGS, define, infile, NULL);
 174                 perror("execl");
 175                 exit(1);
 176         case -1:
 177                 perror("fork");
 178                 exit(1);
 179         }
 180         (void) close(pd[1]);
 181         fin = fdopen(pd[0], "r");
 182         if (fin == NULL) {
 183                 f_print(stderr, "%s: ", cmdname);
 184                 perror(infilename);
 185                 crash();
 186         }
 187 }
 188
 189 /*
 190  * Compile into an XDR routine output file
 191  */
 192 static
 193 c_output(infile, define, extend, outfile)
 194         char *infile;
 195         char *define;
 196         int extend;
 197         char *outfile;
 198 {
 199         definition *def;
 200         char *include;
 201         char *outfilename;
 202         long tell;
 203
 204         open_input(infile, define);
 205         outfilename = extend ? extendfile(infile, outfile) : outfile;
 206         open_output(infile, outfilename);
 207         f_print(fout, "#include <rpc/rpc.h>\n");
 208         if (infile && (include = extendfile(infile, ".h"))) {
 209                 f_print(fout, "#include \"%s\"\n", include);
 210                 free(include);
 211         }
 212         tell = ftell(fout);
 213         while (def = get_definition()) {
 214                 emit(def);
 215         }
 216         if (extend && tell == ftell(fout)) {
 217                 (void) unlink(outfilename);
 218         }
 219 }
 220
 221 /*
 222  * Compile into an XDR header file
 223  */
 224 static
 225 h_output(infile, define, extend, outfile)
 226         char *infile;
 227         char *define;
 228         int extend;
 229         char *outfile;
 230 {
 231         definition *def;
 232         char *outfilename;
 233         long tell;
 234
 235         open_input(infile, define);
 236         outfilename =  extend ? extendfile(infile, outfile) : outfile;
 237         open_output(infile, outfilename);
 238         tell = ftell(fout);
 239         while (def = get_definition()) {
 240                 print_datadef(def);
 241         }
 242         if (extend && tell == ftell(fout)) {
 243                 (void) unlink(outfilename);
 244         }
 245 }
 246
 247 /*
 248  * Compile into an RPC service
 249  */
 250 static
 251 s_output(argc, argv, infile, define, extend, outfile, nomain)
 252         int argc;
 253         char *argv[];
 254         char *infile;
 255         char *define;
 256         int extend;
 257         char *outfile;
 258         int nomain;
 259 {
 260         char *include;
 261         definition *def;
 262         int foundprogram;
 263         char *outfilename;
 264
 265         open_input(infile, define);
 266         outfilename = extend ? extendfile(infile, outfile) : outfile;
 267         open_output(infile, outfilename);
 268         f_print(fout, "#include <stdio.h>\n");
 269         f_print(fout, "#include <rpc/rpc.h>\n");
 270         if (infile && (include = extendfile(infile, ".h"))) {
 271                 f_print(fout, "#include \"%s\"\n", include);
 272                 free(include);
 273         }
 274         foundprogram = 0;
 275         while (def = get_definition()) {
 276                 foundprogram |= (def->def_kind == DEF_PROGRAM);
 277         }
 278         if (extend && !foundprogram) {
 279                 (void) unlink(outfilename);
 280                 return;
 281         }
 282         if (nomain) {
 283                 write_programs((char *)NULL);
 284         } else {
 285                 write_most();
 286                 do_registers(argc, argv);
 287                 write_rest();
 288                 write_programs("static");
 289         }
 290 }
 291
 292 static
 293 l_output(infile, define, extend, outfile)
 294         char *infile;
 295         char *define;
 296         int extend;
 297         char *outfile;
 298 {
 299         char *include;
 300         definition *def;
 301         int foundprogram;
 302         char *outfilename;
 303
 304         open_input(infile, define);
 305         outfilename = extend ? extendfile(infile, outfile) : outfile;
 306         open_output(infile, outfilename);
 307         f_print(fout, "#include <rpc/rpc.h>\n");
 308         if (infile && (include = extendfile(infile, ".h"))) {
 309                 f_print(fout, "#include \"%s\"\n", include);
 310                 free(include);
 311         }
 312         foundprogram = 0;
 313         while (def = get_definition()) {
 314                 foundprogram |= (def->def_kind == DEF_PROGRAM);
 315         }
 316         if (extend && !foundprogram) {
 317                 (void) unlink(outfilename);
 318                 return;
 319         }
 320         write_stubs();
 321 }
 322
 323 /*
 324  * Perform registrations for service output
 325  */
 326 static
 327 do_registers(argc, argv)
 328         int argc;
 329         char *argv[];
 330
 331 {
 332         int i;
 333
 334         for (i = 1; i < argc; i++) {
 335                 if (streq(argv[i], "-s")) {
 336                         write_register(argv[i + 1]);
 337                         i++;
 338                 }
 339         }
 340 }
 341
 342 /*
 343  * Parse command line arguments
 344  */
 345 static
 346 parseargs(argc, argv, cmd)
 347         int argc;
 348         char *argv[];
 349         struct commandline *cmd;
 350
 351 {
 352         int i;
 353         int j;
 354         char c;
 355         char flag[(1 << 8 * sizeof(char))];
 356         int nflags;
 357
 358         cmdname = argv[0];
 359         cmd->infile = cmd->outfile = NULL;
 360         if (argc < 2) {
 361                 return (0);
 362         }
 363         flag['c'] = 0;
 364         flag['h'] = 0;
 365         flag['s'] = 0;
 366         flag['o'] = 0;
 367         flag['l'] = 0;
 368         flag['m'] = 0;
 369         for (i = 1; i < argc; i++) {
 370                 if (argv[i][0] != '-') {
 371                         if (cmd->infile) {
 372                                 return (0);
 373                         }
 374                         cmd->infile = argv[i];
 375                 } else {
 376                         for (j = 1; argv[i][j] != 0; j++) {
 377                                 c = argv[i][j];
 378                                 switch (c) {
 379                                 case 'c':
 380                                 case 'h':
 381                                 case 'l':
 382                                 case 'm':
 383                                         if (flag[c]) {
 384                                                 return (0);
 385                                         }
 386                                         flag[c] = 1;
 387                                         break;
 388                                 case 'o':
 389                                 case 's':
 390                                         if (argv[i][j - 1] != '-' ||
 391                                             argv[i][j + 1] != 0) {
 392                                                 return (0);
 393                                         }
 394                                         flag[c] = 1;
 395                                         if (++i == argc) {
 396                                                 return (0);
 397                                         }
 398                                         if (c == 's') {
 399                                                 if (!streq(argv[i], "udp") &&
 400                                                     !streq(argv[i], "tcp")) {
 401                                                         return (0);
 402                                                 }
 403                                         } else if (c == 'o') {
 404                                                 if (cmd->outfile) {
 405                                                         return (0);
 406                                                 }
 407                                                 cmd->outfile = argv[i];
 408                                         }
 409                                         goto nextarg;
 410
 411                                 default:
 412                                         return (0);
 413                                 }
 414                         }
 415         nextarg:
 416                         ;
 417                 }
 418         }
 419         cmd->cflag = flag['c'];
 420         cmd->hflag = flag['h'];
 421         cmd->sflag = flag['s'];
 422         cmd->lflag = flag['l'];
 423         cmd->mflag = flag['m'];
 424         nflags = cmd->cflag + cmd->hflag + cmd->sflag + cmd->lflag + cmd->mflag;
 425         if (nflags == 0) {
 426                 if (cmd->outfile != NULL || cmd->infile == NULL) {
 427                         return (0);
 428                 }
 429         } else if (nflags > 1) {
 430                 return (0);
 431         }
 432         return (1);
 433 }