1 /* 2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 3 * unrestricted use provided that this legend is included on all tape 4 * media and as a part of the software program in whole or part. Users 5 * may copy or modify Sun RPC without charge, but are not authorized 6 * to license or distribute it to anyone else except as part of a product or 7 * program developed by the user. 8 * 9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 10 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 12 * 13 * Sun RPC is provided with no support and without any obligation on the 14 * part of Sun Microsystems, Inc. to assist in its use, correction, 15 * modification or enhancement. 16 * 17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 19 * OR ANY PART THEREOF. 20 * 21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 22 * or profits or other special, indirect and consequential damages, even if 23 * Sun has been advised of the possibility of such damages. 24 * 25 * Sun Microsystems, Inc. 26 * 2550 Garcia Avenue 27 * Mountain View, California 94043 28 */ 29 30 #if 0 31 #ifndef lint 32 #ident "@(#)rpc_cout.c 1.14 93/07/05 SMI" 33 static char sccsid[] = "@(#)rpc_cout.c 1.13 89/02/22 (C) 1987 SMI"; 34 #endif 35 #endif 36 37 #include <sys/cdefs.h> 38 /* 39 * rpc_cout.c, XDR routine outputter for the RPC protocol compiler 40 * Copyright (C) 1987, Sun Microsystems, Inc. 41 */ 42 #include <ctype.h> 43 #include <stdio.h> 44 #include <string.h> 45 #include "rpc_parse.h" 46 #include "rpc_scan.h" 47 #include "rpc_util.h" 48 49 static void print_header( definition * ); 50 static void print_trailer( void ); 51 static void print_stat( int , declaration * ); 52 static void emit_enum( definition * ); 53 static void emit_program( definition * ); 54 static void emit_union( definition * ); 55 static void emit_struct( definition * ); 56 static void emit_typedef( definition * ); 57 static void emit_inline( int, declaration *, int ); 58 static void emit_single_in_line( int, declaration *, int, relation ); 59 60 /* 61 * Emit the C-routine for the given definition 62 */ 63 void 64 emit(definition *def) 65 { 66 if (def->def_kind == DEF_CONST) { 67 return; 68 } 69 if (def->def_kind == DEF_PROGRAM) { 70 emit_program(def); 71 return; 72 } 73 if (def->def_kind == DEF_TYPEDEF) { 74 /* 75 * now we need to handle declarations like 76 * struct typedef foo foo; 77 * since we dont want this to be expanded into 2 calls to xdr_foo 78 */ 79 80 if (strcmp(def->def.ty.old_type, def->def_name) == 0) 81 return; 82 } 83 print_header(def); 84 switch (def->def_kind) { 85 case DEF_UNION: 86 emit_union(def); 87 break; 88 case DEF_ENUM: 89 emit_enum(def); 90 break; 91 case DEF_STRUCT: 92 emit_struct(def); 93 break; 94 case DEF_TYPEDEF: 95 emit_typedef(def); 96 break; 97 /* DEF_CONST and DEF_PROGRAM have already been handled */ 98 default: 99 break; 100 } 101 print_trailer(); 102 } 103 104 static int 105 findtype(definition *def, const char *type) 106 { 107 108 if (def->def_kind == DEF_PROGRAM || def->def_kind == DEF_CONST) { 109 return (0); 110 } else { 111 return (streq(def->def_name, type)); 112 } 113 } 114 115 static int 116 undefined(const char *type) 117 { 118 definition *def; 119 120 def = (definition *) FINDVAL(defined, type, findtype); 121 return (def == NULL); 122 } 123 124 125 static void 126 print_generic_header(const char *procname, int pointerp) 127 { 128 f_print(fout, "\n"); 129 f_print(fout, "bool_t\n"); 130 f_print(fout, "xdr_%s(", procname); 131 f_print(fout, "XDR *xdrs, "); 132 f_print(fout, "%s ", procname); 133 if (pointerp) 134 f_print(fout, "*"); 135 f_print(fout, "objp)\n{\n\n"); 136 } 137 138 static void 139 print_header(definition *def) 140 { 141 print_generic_header(def->def_name, 142 def->def_kind != DEF_TYPEDEF || 143 !isvectordef(def->def.ty.old_type, 144 def->def.ty.rel)); 145 /* Now add Inline support */ 146 147 if (inline_size == 0) 148 return; 149 /* May cause lint to complain. but ... */ 150 f_print(fout, "\tregister long *buf;\n\n"); 151 } 152 153 static void 154 print_prog_header(proc_list *plist) 155 { 156 print_generic_header(plist->args.argname, 1); 157 } 158 159 static void 160 print_trailer(void) 161 { 162 f_print(fout, "\treturn (TRUE);\n"); 163 f_print(fout, "}\n"); 164 } 165 166 167 static void 168 print_ifopen(int indent, const char *name) 169 { 170 tabify(fout, indent); 171 f_print(fout, "if (!xdr_%s(xdrs", name); 172 } 173 174 static void 175 print_ifarg(const char *arg) 176 { 177 f_print(fout, ", %s", arg); 178 } 179 180 static void 181 print_ifsizeof(int indent, const char *prefix, const char *type) 182 { 183 if (indent) { 184 f_print(fout, ",\n"); 185 tabify(fout, indent); 186 } else { 187 f_print(fout, ", "); 188 } 189 if (streq(type, "bool")) { 190 f_print(fout, "sizeof (bool_t), (xdrproc_t) xdr_bool"); 191 } else { 192 f_print(fout, "sizeof ("); 193 if (undefined(type) && prefix) { 194 f_print(fout, "%s ", prefix); 195 } 196 f_print(fout, "%s), (xdrproc_t) xdr_%s", type, type); 197 } 198 } 199 200 static void 201 print_ifclose(int indent, int brace) 202 { 203 f_print(fout, "))\n"); 204 tabify(fout, indent); 205 f_print(fout, "\treturn (FALSE);\n"); 206 if (brace) 207 f_print(fout, "\t}\n"); 208 } 209 210 static void 211 print_ifstat(int indent, const char *prefix, const char *type, relation rel, 212 const char *amax, const char *objname, const char *name) 213 { 214 const char *alt = NULL; 215 int brace = 0; 216 217 switch (rel) { 218 case REL_POINTER: 219 brace = 1; 220 f_print(fout, "\t{\n"); 221 f_print(fout, "\t%s **pp = %s;\n", type, objname); 222 print_ifopen(indent, "pointer"); 223 print_ifarg("(char **)"); 224 f_print(fout, "pp"); 225 print_ifsizeof(0, prefix, type); 226 break; 227 case REL_VECTOR: 228 if (streq(type, "string")) { 229 alt = "string"; 230 } else if (streq(type, "opaque")) { 231 alt = "opaque"; 232 } 233 if (alt) { 234 print_ifopen(indent, alt); 235 print_ifarg(objname); 236 } else { 237 print_ifopen(indent, "vector"); 238 print_ifarg("(char *)"); 239 f_print(fout, "%s", objname); 240 } 241 print_ifarg(amax); 242 if (!alt) { 243 print_ifsizeof(indent + 1, prefix, type); 244 } 245 break; 246 case REL_ARRAY: 247 if (streq(type, "string")) { 248 alt = "string"; 249 } else if (streq(type, "opaque")) { 250 alt = "bytes"; 251 } 252 if (streq(type, "string")) { 253 print_ifopen(indent, alt); 254 print_ifarg(objname); 255 } else { 256 if (alt) { 257 print_ifopen(indent, alt); 258 } else { 259 print_ifopen(indent, "array"); 260 } 261 print_ifarg("(char **)"); 262 if (*objname == '&') { 263 f_print(fout, "%s.%s_val, (u_int *) %s.%s_len", 264 objname, name, objname, name); 265 } else { 266 f_print(fout, 267 "&%s->%s_val, (u_int *) &%s->%s_len", 268 objname, name, objname, name); 269 } 270 } 271 print_ifarg(amax); 272 if (!alt) { 273 print_ifsizeof(indent + 1, prefix, type); 274 } 275 break; 276 case REL_ALIAS: 277 print_ifopen(indent, type); 278 print_ifarg(objname); 279 break; 280 } 281 print_ifclose(indent, brace); 282 } 283 284 /* ARGSUSED */ 285 static void 286 emit_enum(definition *def __unused) 287 { 288 print_ifopen(1, "enum"); 289 print_ifarg("(enum_t *)objp"); 290 print_ifclose(1, 0); 291 } 292 293 static void 294 emit_program(definition *def) 295 { 296 decl_list *dl; 297 version_list *vlist; 298 proc_list *plist; 299 300 for (vlist = def->def.pr.versions; vlist != NULL; vlist = vlist->next) 301 for (plist = vlist->procs; plist != NULL; plist = plist->next) { 302 if (!newstyle || plist->arg_num < 2) 303 continue; /* old style, or single argument */ 304 print_prog_header(plist); 305 for (dl = plist->args.decls; dl != NULL; 306 dl = dl->next) 307 print_stat(1, &dl->decl); 308 print_trailer(); 309 } 310 } 311 312 313 static void 314 emit_union(definition *def) 315 { 316 declaration *dflt; 317 case_list *cl; 318 declaration *cs; 319 char *object; 320 const char *vecformat = "objp->%s_u.%s"; 321 const char *format = "&objp->%s_u.%s"; 322 323 print_stat(1, &def->def.un.enum_decl); 324 f_print(fout, "\tswitch (objp->%s) {\n", def->def.un.enum_decl.name); 325 for (cl = def->def.un.cases; cl != NULL; cl = cl->next) { 326 327 f_print(fout, "\tcase %s:\n", cl->case_name); 328 if (cl->contflag == 1) /* a continued case statement */ 329 continue; 330 cs = &cl->case_decl; 331 if (!streq(cs->type, "void")) { 332 object = xmalloc(strlen(def->def_name) + 333 strlen(format) + strlen(cs->name) + 1); 334 if (isvectordef (cs->type, cs->rel)) { 335 s_print(object, vecformat, def->def_name, 336 cs->name); 337 } else { 338 s_print(object, format, def->def_name, 339 cs->name); 340 } 341 print_ifstat(2, cs->prefix, cs->type, cs->rel, 342 cs->array_max, object, cs->name); 343 free(object); 344 } 345 f_print(fout, "\t\tbreak;\n"); 346 } 347 dflt = def->def.un.default_decl; 348 if (dflt != NULL) { 349 if (!streq(dflt->type, "void")) { 350 f_print(fout, "\tdefault:\n"); 351 object = xmalloc(strlen(def->def_name) + 352 strlen(format) + strlen(dflt->name) + 1); 353 if (isvectordef (dflt->type, dflt->rel)) { 354 s_print(object, vecformat, def->def_name, 355 dflt->name); 356 } else { 357 s_print(object, format, def->def_name, 358 dflt->name); 359 } 360 361 print_ifstat(2, dflt->prefix, dflt->type, dflt->rel, 362 dflt->array_max, object, dflt->name); 363 free(object); 364 f_print(fout, "\t\tbreak;\n"); 365 } else { 366 f_print(fout, "\tdefault:\n"); 367 f_print(fout, "\t\tbreak;\n"); 368 } 369 } else { 370 f_print(fout, "\tdefault:\n"); 371 f_print(fout, "\t\treturn (FALSE);\n"); 372 } 373 374 f_print(fout, "\t}\n"); 375 } 376 377 static void 378 inline_struct(definition *def, int flag) 379 { 380 decl_list *dl; 381 int i, size; 382 decl_list *cur, *psav; 383 bas_type *ptr; 384 char *sizestr; 385 const char *plus; 386 char ptemp[256]; 387 int indent = 1; 388 389 cur = NULL; 390 if (flag == PUT) 391 f_print(fout, "\n\tif (xdrs->x_op == XDR_ENCODE) {\n"); 392 else 393 f_print(fout, "\t\treturn (TRUE);\n\t} else if (xdrs->x_op == XDR_DECODE) {\n"); 394 395 i = 0; 396 size = 0; 397 sizestr = NULL; 398 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) { /* xxx */ 399 /* now walk down the list and check for basic types */ 400 if ((dl->decl.prefix == NULL) && 401 ((ptr = find_type(dl->decl.type)) != NULL) && 402 ((dl->decl.rel == REL_ALIAS) || 403 (dl->decl.rel == REL_VECTOR))){ 404 if (i == 0) 405 cur = dl; 406 i++; 407 408 if (dl->decl.rel == REL_ALIAS) 409 size += ptr->length; 410 else { 411 /* this code is required to handle arrays */ 412 if (sizestr == NULL) 413 plus = ""; 414 else 415 plus = " + "; 416 417 if (ptr->length != 1) 418 s_print(ptemp, "%s%s * %d", 419 plus, dl->decl.array_max, 420 ptr->length); 421 else 422 s_print(ptemp, "%s%s", plus, 423 dl->decl.array_max); 424 425 /* now concatenate to sizestr !!!! */ 426 if (sizestr == NULL) { 427 sizestr = xstrdup(ptemp); 428 } 429 else{ 430 sizestr = xrealloc(sizestr, 431 strlen(sizestr) 432 +strlen(ptemp)+1); 433 sizestr = strcat(sizestr, ptemp); 434 /* build up length of array */ 435 } 436 } 437 } else { 438 if (i > 0) { 439 if (sizestr == NULL && size < inline_size){ 440 /* 441 * don't expand into inline code 442 * if size < inline_size 443 */ 444 while (cur != dl){ 445 print_stat(indent + 1, &cur->decl); 446 cur = cur->next; 447 } 448 } else { 449 /* were already looking at a xdr_inlineable structure */ 450 tabify(fout, indent + 1); 451 if (sizestr == NULL) 452 f_print(fout, "buf = XDR_INLINE(xdrs, %d * BYTES_PER_XDR_UNIT);", 453 size); 454 else { 455 if (size == 0) 456 f_print(fout, 457 "buf = XDR_INLINE(xdrs, (%s) * BYTES_PER_XDR_UNIT);", 458 sizestr); 459 else 460 f_print(fout, 461 "buf = XDR_INLINE(xdrs, (%d + (%s)) * BYTES_PER_XDR_UNIT);", 462 size, sizestr); 463 464 } 465 f_print(fout, "\n"); 466 tabify(fout, indent + 1); 467 f_print(fout, 468 "if (buf == NULL) {\n"); 469 470 psav = cur; 471 while (cur != dl){ 472 print_stat(indent + 2, &cur->decl); 473 cur = cur->next; 474 } 475 476 f_print(fout, "\n\t\t} else {\n"); 477 478 cur = psav; 479 while (cur != dl){ 480 emit_inline(indent + 2, &cur->decl, flag); 481 cur = cur->next; 482 } 483 484 tabify(fout, indent + 1); 485 f_print(fout, "}\n"); 486 } 487 } 488 size = 0; 489 i = 0; 490 free(sizestr); 491 sizestr = NULL; 492 print_stat(indent + 1, &dl->decl); 493 } 494 } 495 496 if (i > 0) { 497 if (sizestr == NULL && size < inline_size){ 498 /* don't expand into inline code if size < inline_size */ 499 while (cur != dl){ 500 print_stat(indent + 1, &cur->decl); 501 cur = cur->next; 502 } 503 } else { 504 /* were already looking at a xdr_inlineable structure */ 505 if (sizestr == NULL) 506 f_print(fout, "\t\tbuf = XDR_INLINE(xdrs, %d * BYTES_PER_XDR_UNIT);", 507 size); 508 else 509 if (size == 0) 510 f_print(fout, 511 "\t\tbuf = XDR_INLINE(xdrs, (%s) * BYTES_PER_XDR_UNIT);", 512 sizestr); 513 else 514 f_print(fout, 515 "\t\tbuf = XDR_INLINE(xdrs, (%d + (%s)) * BYTES_PER_XDR_UNIT);", 516 size, sizestr); 517 518 f_print(fout, "\n\t\tif (buf == NULL) {\n"); 519 psav = cur; 520 while (cur != NULL){ 521 print_stat(indent + 2, &cur->decl); 522 cur = cur->next; 523 } 524 f_print(fout, "\t\t} else {\n"); 525 526 cur = psav; 527 while (cur != dl){ 528 emit_inline(indent + 2, &cur->decl, flag); 529 cur = cur->next; 530 } 531 f_print(fout, "\t\t}\n"); 532 } 533 } 534 } 535 536 static void 537 emit_struct(definition *def) 538 { 539 decl_list *dl; 540 int j, size, flag; 541 bas_type *ptr; 542 int can_inline; 543 544 if (inline_size == 0) { 545 /* No xdr_inlining at all */ 546 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 547 print_stat(1, &dl->decl); 548 return; 549 } 550 551 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 552 if (dl->decl.rel == REL_VECTOR && 553 strcmp(dl->decl.type, "opaque") != 0){ 554 f_print(fout, "\tint i;\n"); 555 break; 556 } 557 558 size = 0; 559 can_inline = 0; 560 /* 561 * Make a first pass and see if inling is possible. 562 */ 563 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 564 if ((dl->decl.prefix == NULL) && 565 ((ptr = find_type(dl->decl.type)) != NULL) && 566 ((dl->decl.rel == REL_ALIAS)|| 567 (dl->decl.rel == REL_VECTOR))){ 568 if (dl->decl.rel == REL_ALIAS) 569 size += ptr->length; 570 else { 571 can_inline = 1; 572 break; /* can be inlined */ 573 } 574 } else { 575 if (size >= inline_size){ 576 can_inline = 1; 577 break; /* can be inlined */ 578 } 579 size = 0; 580 } 581 if (size >= inline_size) 582 can_inline = 1; 583 584 if (can_inline == 0){ /* can not inline, drop back to old mode */ 585 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 586 print_stat(1, &dl->decl); 587 return; 588 } 589 590 flag = PUT; 591 for (j = 0; j < 2; j++){ 592 inline_struct(def, flag); 593 if (flag == PUT) 594 flag = GET; 595 } 596 597 f_print(fout, "\t\treturn (TRUE);\n\t}\n\n"); 598 599 /* now take care of XDR_FREE case */ 600 601 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 602 print_stat(1, &dl->decl); 603 604 } 605 606 static void 607 emit_typedef(definition *def) 608 { 609 const char *prefix = def->def.ty.old_prefix; 610 const char *type = def->def.ty.old_type; 611 const char *amax = def->def.ty.array_max; 612 relation rel = def->def.ty.rel; 613 614 print_ifstat(1, prefix, type, rel, amax, "objp", def->def_name); 615 } 616 617 static void 618 print_stat(int indent, declaration *dec) 619 { 620 const char *prefix = dec->prefix; 621 const char *type = dec->type; 622 const char *amax = dec->array_max; 623 relation rel = dec->rel; 624 char name[256]; 625 626 if (isvectordef(type, rel)) { 627 s_print(name, "objp->%s", dec->name); 628 } else { 629 s_print(name, "&objp->%s", dec->name); 630 } 631 print_ifstat(indent, prefix, type, rel, amax, name, dec->name); 632 } 633 634 635 char *upcase(const char *); 636 637 static void 638 emit_inline(int indent, declaration *decl, int flag) 639 { 640 switch (decl->rel) { 641 case REL_ALIAS : 642 emit_single_in_line(indent, decl, flag, REL_ALIAS); 643 break; 644 case REL_VECTOR : 645 tabify(fout, indent); 646 f_print(fout, "{\n"); 647 tabify(fout, indent + 1); 648 f_print(fout, "%s *genp;\n\n", decl->type); 649 tabify(fout, indent + 1); 650 f_print(fout, 651 "for (i = 0, genp = objp->%s;\n", decl->name); 652 tabify(fout, indent + 2); 653 f_print(fout, "i < %s; i++) {\n", decl->array_max); 654 emit_single_in_line(indent + 2, decl, flag, REL_VECTOR); 655 tabify(fout, indent + 1); 656 f_print(fout, "}\n"); 657 tabify(fout, indent); 658 f_print(fout, "}\n"); 659 break; 660 default: 661 break; 662 } 663 } 664 665 static void 666 emit_single_in_line(int indent, declaration *decl, int flag, relation rel) 667 { 668 char *upp_case; 669 670 tabify(fout, indent); 671 if (flag == PUT) 672 f_print(fout, "IXDR_PUT_"); 673 else 674 if (rel == REL_ALIAS) 675 f_print(fout, "objp->%s = IXDR_GET_", decl->name); 676 else 677 f_print(fout, "*genp++ = IXDR_GET_"); 678 679 upp_case = upcase(decl->type); 680 681 /* hack - XX */ 682 if (strcmp(upp_case, "INT") == 0) 683 { 684 free(upp_case); 685 upp_case = strdup("LONG"); 686 } 687 688 if (strcmp(upp_case, "U_INT") == 0) 689 { 690 free(upp_case); 691 upp_case = strdup("U_LONG"); 692 } 693 if (flag == PUT) 694 if (rel == REL_ALIAS) 695 f_print(fout, 696 "%s(buf, objp->%s);\n", upp_case, decl->name); 697 else 698 f_print(fout, "%s(buf, *genp++);\n", upp_case); 699 700 else 701 f_print(fout, "%s(buf);\n", upp_case); 702 free(upp_case); 703 } 704 705 char * 706 upcase(const char *str) 707 { 708 char *ptr, *hptr; 709 710 ptr = (char *)xmalloc(strlen(str)+1); 711 712 hptr = ptr; 713 while (*str != '\0') 714 *ptr++ = toupper(*str++); 715 716 *ptr = '\0'; 717 return (hptr); 718 } 719