rpc_cout.c revision 1.31
1 /* $NetBSD: rpc_cout.c,v 1.31 2013/08/11 08:03:10 dholland Exp $ */ 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 or with the express written consent of 9 * Sun Microsystems, Inc. 10 * 11 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 12 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 13 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 14 * 15 * Sun RPC is provided with no support and without any obligation on the 16 * part of Sun Microsystems, Inc. to assist in its use, correction, 17 * modification or enhancement. 18 * 19 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 20 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 21 * OR ANY PART THEREOF. 22 * 23 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 24 * or profits or other special, indirect and consequential damages, even if 25 * Sun has been advised of the possibility of such damages. 26 * 27 * Sun Microsystems, Inc. 28 * 2550 Garcia Avenue 29 * Mountain View, California 94043 30 */ 31 32 #if HAVE_NBTOOL_CONFIG_H 33 #include "nbtool_config.h" 34 #endif 35 36 #include <sys/cdefs.h> 37 #if defined(__RCSID) && !defined(lint) 38 #if 0 39 static char sccsid[] = "@(#)rpc_cout.c 1.13 89/02/22 (C) 1987 SMI"; 40 #else 41 __RCSID("$NetBSD: rpc_cout.c,v 1.31 2013/08/11 08:03:10 dholland Exp $"); 42 #endif 43 #endif 44 45 /* 46 * rpc_cout.c, XDR routine outputter for the RPC protocol compiler 47 */ 48 #include <ctype.h> 49 #include <err.h> 50 #include <stdio.h> 51 #include <stdlib.h> 52 #include <string.h> 53 #include "rpc_scan.h" 54 #include "rpc_parse.h" 55 #include "rpc_util.h" 56 57 static int findtype __P((definition *, const char *)); 58 static int undefined __P((const char *)); 59 static void print_generic_header __P((const char *, int)); 60 static void print_header __P((definition *)); 61 static void print_prog_header __P((proc_list *)); 62 static void print_trailer __P((void)); 63 static void print_ifopen __P((int, const char *)); 64 static void print_ifarg __P((const char *)); 65 static void print_ifsizeof __P((const char *, const char *)); 66 static void print_ifclose __P((int)); 67 static void print_ifstat __P((int, const char *, const char *, relation, 68 const char *, const char *, const char *)); 69 static void emit_enum __P((definition *)); 70 static void emit_program __P((definition *)); 71 static void emit_union __P((definition *)); 72 static void emit_struct __P((definition *)); 73 static void emit_typedef __P((definition *)); 74 static void print_stat __P((int, declaration *)); 75 76 /* 77 * Emit the C-routine for the given definition 78 */ 79 void 80 emit(definition *def) 81 { 82 if (def->def_kind == DEF_CONST) { 83 return; 84 } 85 if (def->def_kind == DEF_PROGRAM) { 86 emit_program(def); 87 return; 88 } 89 if (def->def_kind == DEF_TYPEDEF) { 90 /* now we need to handle declarations like struct typedef foo 91 * foo; since we dont want this to be expanded into 2 calls to 92 * xdr_foo */ 93 94 if (strcmp(def->def.ty.old_type, def->def_name) == 0) 95 return; 96 }; 97 98 print_header(def); 99 100 switch (def->def_kind) { 101 case DEF_UNION: 102 emit_union(def); 103 break; 104 case DEF_ENUM: 105 emit_enum(def); 106 break; 107 case DEF_STRUCT: 108 emit_struct(def); 109 break; 110 case DEF_TYPEDEF: 111 emit_typedef(def); 112 break; 113 case DEF_PROGRAM: 114 case DEF_CONST: 115 errx(1, "Internal error %s, %d: Case %d not handled", 116 __FILE__, __LINE__, def->def_kind); 117 break; 118 } 119 print_trailer(); 120 } 121 122 static int 123 findtype(definition *def, const char *type) 124 { 125 126 if (def->def_kind == DEF_PROGRAM || def->def_kind == DEF_CONST) { 127 return (0); 128 } else { 129 return (streq(def->def_name, type)); 130 } 131 } 132 133 static int 134 undefined(const char *type) 135 { 136 definition *def; 137 138 def = (definition *) FINDVAL(defined, type, findtype); 139 140 141 return (def == NULL); 142 } 143 144 static void 145 print_generic_header(const char *procname, int pointerp) 146 { 147 f_print(fout, "\n"); 148 f_print(fout, "bool_t\n"); 149 if (Cflag) { 150 f_print(fout, "xdr_%s(", procname); 151 f_print(fout, "XDR *xdrs, "); 152 f_print(fout, "%s ", procname); 153 if (pointerp) 154 f_print(fout, "*"); 155 f_print(fout, "objp)\n{\n"); 156 } else { 157 f_print(fout, "xdr_%s(xdrs, objp)\n", procname); 158 f_print(fout, "\tXDR *xdrs;\n"); 159 f_print(fout, "\t%s ", procname); 160 if (pointerp) 161 f_print(fout, "*"); 162 f_print(fout, "objp;\n{\n"); 163 } 164 } 165 166 static void 167 print_header(definition *def) 168 { 169 print_generic_header(def->def_name, 170 def->def_kind != DEF_TYPEDEF || 171 !isvectordef(def->def.ty.old_type, def->def.ty.rel)); 172 } 173 174 static void 175 print_prog_header(proc_list *plist) 176 { 177 print_generic_header(plist->args.argname, 1); 178 } 179 180 static void 181 print_trailer(void) 182 { 183 f_print(fout, "\treturn (TRUE);\n"); 184 f_print(fout, "}\n"); 185 } 186 187 188 static void 189 print_ifopen(int indent, const char *name) 190 { 191 char _t_kludge[32]; 192 /* 193 * XXX Solaris seems to strip the _t. No idea why. 194 */ 195 if (!strcmp(name, "rpcprog_t") || !strcmp(name, "rpcvers_t") || 196 !strcmp(name, "rpcproc_t") || !strcmp(name, "rpcprot_t") || 197 !strcmp(name, "rpcport_t") || !strcmp(name, "rpcpinline_t")) { 198 strncpy(_t_kludge, name, strlen(name) - 2); 199 name = _t_kludge; 200 } 201 tabify(fout, indent); 202 f_print(fout, "if (!xdr_%s(xdrs", name); 203 } 204 205 static void 206 print_ifarg(const char *arg) 207 { 208 f_print(fout, ", %s", arg); 209 } 210 211 static void 212 print_ifsizeof(const char *prefix, const char *type) 213 { 214 if (streq(type, "bool")) { 215 f_print(fout, ", (u_int)sizeof(bool_t), (xdrproc_t)xdr_bool"); 216 } else { 217 f_print(fout, ", (u_int)sizeof("); 218 if (undefined(type) && prefix) { 219 f_print(fout, "%s ", prefix); 220 } 221 f_print(fout, "%s), (xdrproc_t)xdr_%s", type, type); 222 } 223 } 224 225 static void 226 print_ifclose(int indent) 227 { 228 f_print(fout, "))\n"); 229 tabify(fout, indent); 230 f_print(fout, "\treturn (FALSE);\n"); 231 } 232 233 static void 234 print_ifstat(int indent, const char *prefix, const char *type, relation rel, 235 const char *amax, const char *objname, const char *name) 236 { 237 const char *alt = NULL; 238 239 switch (rel) { 240 case REL_POINTER: 241 print_ifopen(indent, "pointer"); 242 print_ifarg("(char **)(void *)"); 243 f_print(fout, "%s", objname); 244 print_ifsizeof(prefix, type); 245 break; 246 case REL_VECTOR: 247 if (streq(type, "string")) { 248 alt = "string"; 249 } else 250 if (streq(type, "opaque")) { 251 alt = "opaque"; 252 } 253 if (alt) { 254 print_ifopen(indent, alt); 255 print_ifarg(objname); 256 } else { 257 print_ifopen(indent, "vector"); 258 print_ifarg("(char *)(void *)"); 259 f_print(fout, "%s", objname); 260 } 261 print_ifarg(amax); 262 if (!alt) { 263 print_ifsizeof(prefix, type); 264 } 265 break; 266 case REL_ARRAY: 267 if (streq(type, "string")) { 268 alt = "string"; 269 } else 270 if (streq(type, "opaque")) { 271 alt = "bytes"; 272 } 273 if (streq(type, "string")) { 274 print_ifopen(indent, alt); 275 print_ifarg(objname); 276 } else { 277 if (alt) { 278 print_ifopen(indent, alt); 279 } else { 280 print_ifopen(indent, "array"); 281 } 282 print_ifarg("(char **)(void *)"); 283 if (*objname == '&') { 284 f_print(fout, "%s.%s_val, (u_int *)%s.%s_len", 285 objname, name, objname, name); 286 } else { 287 f_print(fout, "&%s->%s_val, (u_int *)&%s->%s_len", 288 objname, name, objname, name); 289 } 290 } 291 print_ifarg(amax); 292 if (!alt) { 293 print_ifsizeof(prefix, type); 294 } 295 break; 296 case REL_ALIAS: 297 print_ifopen(indent, type); 298 print_ifarg(objname); 299 break; 300 } 301 print_ifclose(indent); 302 } 303 /* ARGSUSED */ 304 static void 305 emit_enum(definition *def) 306 { 307 tabify(fout, 1); 308 f_print(fout, "{\n"); 309 tabify(fout, 2); 310 f_print(fout, "enum_t et = (enum_t)*objp;\n"); 311 print_ifopen(2, "enum"); 312 print_ifarg("&et"); 313 print_ifclose(2); 314 tabify(fout, 2); 315 f_print(fout, "*objp = (%s)et;\n", def->def_name); 316 tabify(fout, 1); 317 f_print(fout, "}\n"); 318 } 319 320 static void 321 emit_program(definition *def) 322 { 323 decl_list *dl; 324 version_list *vlist; 325 proc_list *plist; 326 327 for (vlist = def->def.pr.versions; vlist != NULL; vlist = vlist->next) 328 for (plist = vlist->procs; plist != NULL; plist = plist->next) { 329 if (!newstyle || plist->arg_num < 2) 330 continue; /* old style, or single 331 * argument */ 332 print_prog_header(plist); 333 for (dl = plist->args.decls; dl != NULL; 334 dl = dl->next) 335 print_stat(1, &dl->decl); 336 print_trailer(); 337 } 338 } 339 340 341 static void 342 emit_union(definition *def) 343 { 344 declaration *dflt; 345 case_list *cl; 346 declaration *cs; 347 char *object; 348 static const char vecformat[] = "objp->%s_u.%s"; 349 static const char format[] = "&objp->%s_u.%s"; 350 351 f_print(fout, "\n"); 352 print_stat(1, &def->def.un.enum_decl); 353 f_print(fout, "\tswitch (objp->%s) {\n", def->def.un.enum_decl.name); 354 for (cl = def->def.un.cases; cl != NULL; cl = cl->next) { 355 f_print(fout, "\tcase %s:\n", cl->case_name); 356 if (cl->contflag == 1) /* a continued case statement */ 357 continue; 358 cs = &cl->case_decl; 359 if (!streq(cs->type, "void")) { 360 object = alloc(strlen(def->def_name) + strlen(format) + 361 strlen(cs->name) + 1); 362 if (isvectordef(cs->type, cs->rel)) { 363 s_print(object, vecformat, def->def_name, 364 cs->name); 365 } else { 366 s_print(object, format, def->def_name, 367 cs->name); 368 } 369 print_ifstat(2, cs->prefix, cs->type, cs->rel, 370 cs->array_max, object, cs->name); 371 free(object); 372 } 373 f_print(fout, "\t\tbreak;\n"); 374 } 375 dflt = def->def.un.default_decl; 376 f_print(fout, "\tdefault:\n"); 377 if (dflt != NULL) { 378 if (!streq(dflt->type, "void")) { 379 object = alloc(strlen(def->def_name) + strlen(format) + 380 strlen(dflt->name) + 1); 381 if (isvectordef(dflt->type, dflt->rel)) { 382 s_print(object, vecformat, def->def_name, 383 dflt->name); 384 } else { 385 s_print(object, format, def->def_name, 386 dflt->name); 387 } 388 print_ifstat(2, dflt->prefix, dflt->type, dflt->rel, 389 dflt->array_max, object, dflt->name); 390 free(object); 391 } 392 f_print(fout, "\t\tbreak;\n"); 393 } else { 394 f_print(fout, "\t\treturn (FALSE);\n"); 395 } 396 397 f_print(fout, "\t}\n"); 398 } 399 400 static void 401 emit_struct(definition *def) 402 { 403 decl_list *dl; 404 int i, j, size, flag; 405 decl_list *cur = NULL, *psav; 406 bas_type *ptr; 407 char *sizestr; 408 const char *plus; 409 char ptemp[256]; 410 int can_inline; 411 412 413 if (doinline == 0) { 414 f_print(fout, "\n"); 415 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 416 print_stat(1, &dl->decl); 417 return; 418 } 419 size = 0; 420 can_inline = 0; 421 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 422 if ((dl->decl.prefix == NULL) && 423 ((ptr = find_type(dl->decl.type)) != NULL) && 424 ((dl->decl.rel == REL_ALIAS) || (dl->decl.rel == REL_VECTOR))) { 425 426 if (dl->decl.rel == REL_ALIAS) 427 size += ptr->length; 428 else { 429 can_inline = 1; 430 break; /* can be inlined */ 431 }; 432 } else { 433 if (size >= doinline) { 434 can_inline = 1; 435 break; /* can be inlined */ 436 } 437 size = 0; 438 } 439 if (size > doinline) 440 can_inline = 1; 441 442 if (can_inline == 0) { /* can not inline, drop back to old mode */ 443 f_print(fout, "\n"); 444 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 445 print_stat(1, &dl->decl); 446 return; 447 }; 448 449 /* May cause lint to complain. but ... */ 450 f_print(fout, "\tint32_t *buf;\n"); 451 452 flag = PUT; 453 f_print(fout, "\n\tif (xdrs->x_op == XDR_ENCODE) {\n"); 454 455 for (j = 0; j < 2; j++) { 456 i = 0; 457 size = 0; 458 sizestr = NULL; 459 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) { /* xxx */ 460 461 /* now walk down the list and check for basic types */ 462 if ((dl->decl.prefix == NULL) && ((ptr = find_type(dl->decl.type)) != NULL) && ((dl->decl.rel == REL_ALIAS) || (dl->decl.rel == REL_VECTOR))) { 463 if (i == 0) 464 cur = dl; 465 i++; 466 467 if (dl->decl.rel == REL_ALIAS) 468 size += ptr->length; 469 else { 470 /* this is required to handle arrays */ 471 472 if (sizestr == NULL) 473 plus = ""; 474 else 475 plus = " + "; 476 477 if (ptr->length != 1) 478 s_print(ptemp, "%s%s * %d", plus, dl->decl.array_max, ptr->length); 479 else 480 s_print(ptemp, "%s%s", plus, dl->decl.array_max); 481 482 /* now concatenate to sizestr !!!! */ 483 if (sizestr == NULL) 484 sizestr = strdup(ptemp); 485 else { 486 char *nsizestr; 487 488 nsizestr = (char *) realloc(sizestr, strlen(sizestr) + strlen(ptemp) + 1); 489 if (nsizestr == NULL) { 490 491 f_print(stderr, "Fatal error : no memory\n"); 492 crash(); 493 } 494 sizestr = nsizestr; 495 sizestr = strcat(sizestr, ptemp); /* build up length of 496 * array */ 497 498 } 499 } 500 501 } else { 502 if (i > 0) { 503 if (sizestr == NULL && size < doinline) { 504 /* don't expand into inline 505 * code if size < doinline */ 506 while (cur != dl) { 507 print_stat(2, &cur->decl); 508 cur = cur->next; 509 } 510 } else { 511 512 513 514 /* were already looking at a 515 * xdr_inlineable structure */ 516 if (sizestr == NULL) 517 f_print(fout, "\t\tbuf = (int32_t *)XDR_INLINE(xdrs, %d * BYTES_PER_XDR_UNIT);\n", 518 size); 519 else 520 if (size == 0) 521 f_print(fout, 522 "\t\tbuf = (int32_t *)XDR_INLINE(xdrs, %s * BYTES_PER_XDR_UNIT);\n", 523 sizestr); 524 else 525 f_print(fout, 526 "\t\tbuf = (int32_t *)XDR_INLINE(xdrs, (%d + %s) * BYTES_PER_XDR_UNIT);\n", 527 size, sizestr); 528 529 f_print(fout, "\t\tif (buf == NULL) {\n"); 530 531 psav = cur; 532 while (cur != dl) { 533 print_stat(3, &cur->decl); 534 cur = cur->next; 535 } 536 537 f_print(fout, "\t\t} else {\n"); 538 539 cur = psav; 540 while (cur != dl) { 541 emit_inline(&cur->decl, flag); 542 cur = cur->next; 543 } 544 545 f_print(fout, "\t\t}\n"); 546 } 547 } 548 size = 0; 549 i = 0; 550 if (sizestr) { 551 free(sizestr); 552 sizestr = NULL; 553 } 554 print_stat(2, &dl->decl); 555 } 556 557 } 558 if (i > 0) { 559 if (sizestr == NULL && size < doinline) { 560 /* don't expand into inline code if size < 561 * doinline */ 562 while (cur != dl) { 563 print_stat(2, &cur->decl); 564 cur = cur->next; 565 } 566 } else { 567 568 /* were already looking at a xdr_inlineable 569 * structure */ 570 if (sizestr == NULL) 571 f_print(fout, "\t\tbuf = (int32_t *)XDR_INLINE(xdrs, %d * BYTES_PER_XDR_UNIT);\n", 572 size); 573 else 574 if (size == 0) 575 f_print(fout, 576 "\t\tbuf = (int32_t *)XDR_INLINE(xdrs, %s * BYTES_PER_XDR_UNIT);\n", 577 sizestr); 578 else 579 f_print(fout, 580 "\t\tbuf = (int32_t *)XDR_INLINE(xdrs, (%d + %s) * BYTES_PER_XDR_UNIT);\n", 581 size, sizestr); 582 583 f_print(fout, "\t\tif (buf == NULL) {\n"); 584 585 psav = cur; 586 while (cur != NULL) { 587 print_stat(3, &cur->decl); 588 cur = cur->next; 589 } 590 f_print(fout, "\t\t} else {\n"); 591 592 cur = psav; 593 while (cur != dl) { 594 emit_inline(&cur->decl, flag); 595 cur = cur->next; 596 } 597 598 f_print(fout, "\t\t}\n"); 599 600 } 601 } 602 if (flag == PUT) { 603 flag = GET; 604 f_print(fout, "\t} else if (xdrs->x_op == XDR_DECODE) {\n"); 605 } 606 } 607 608 f_print(fout, "\t} else {\n"); 609 610 /* now take care of XDR_FREE case */ 611 612 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 613 print_stat(2, &dl->decl); 614 615 f_print(fout, "\t}\n"); 616 } 617 618 static void 619 emit_typedef(definition *def) 620 { 621 const char *prefix = def->def.ty.old_prefix; 622 const char *type = def->def.ty.old_type; 623 const char *amax = def->def.ty.array_max; 624 relation rel = def->def.ty.rel; 625 626 f_print(fout, "\n"); 627 print_ifstat(1, prefix, type, rel, amax, "objp", def->def_name); 628 } 629 630 static void 631 print_stat(int indent, declaration *dec) 632 { 633 const char *prefix = dec->prefix; 634 const char *type = dec->type; 635 const char *amax = dec->array_max; 636 relation rel = dec->rel; 637 char name[256]; 638 639 if (isvectordef(type, rel)) { 640 s_print(name, "objp->%s", dec->name); 641 } else { 642 s_print(name, "&objp->%s", dec->name); 643 } 644 print_ifstat(indent, prefix, type, rel, amax, name, dec->name); 645 } 646 647 648 void 649 emit_inline(declaration *decl, int flag) 650 { 651 652 /*check whether an array or not */ 653 654 switch (decl->rel) { 655 case REL_ALIAS: 656 emit_single_in_line(decl, flag, REL_ALIAS); 657 break; 658 case REL_VECTOR: 659 f_print(fout, "\t\t\t{\n"); 660 f_print(fout, "\t\t\t\tint i;\n"); 661 f_print(fout, "\t\t\t\t%s *genp;\n", decl->type); 662 f_print(fout, "\n"); 663 f_print(fout, "\t\t\t\tfor (i = 0, genp = objp->%s;\n", 664 decl->name); 665 f_print(fout, "\t\t\t\t i < %s; i++) {\n\t\t", 666 decl->array_max); 667 emit_single_in_line(decl, flag, REL_VECTOR); 668 f_print(fout, "\t\t\t\t}\n\t\t\t}\n"); 669 break; 670 case REL_ARRAY: 671 case REL_POINTER: 672 errx(1, "Internal error %s, %d: Case %d not handled", 673 __FILE__, __LINE__, decl->rel); 674 } 675 } 676 677 void 678 emit_single_in_line(declaration *decl, int flag, relation rel) 679 { 680 const char *upp_case; 681 char *freeable; 682 int freed = 0; 683 684 if (flag == PUT) 685 f_print(fout, "\t\t\tIXDR_PUT_"); 686 else 687 if (rel == REL_ALIAS) 688 f_print(fout, "\t\t\tobjp->%s = IXDR_GET_", decl->name); 689 else 690 f_print(fout, "\t\t\t*genp++ = IXDR_GET_"); 691 692 upp_case = freeable = upcase(decl->type); 693 694 /* hack - XX */ 695 if (strcmp(upp_case, "INT") == 0) { 696 free(freeable); 697 freed = 1; 698 upp_case = "INT32"; 699 } 700 if (strcmp(upp_case, "U_INT") == 0) { 701 free(freeable); 702 freed = 1; 703 upp_case = "U_INT32"; 704 } 705 if (flag == PUT) { 706 if (rel == REL_ALIAS) 707 f_print(fout, "%s(buf, objp->%s);\n", upp_case, decl->name); 708 else 709 f_print(fout, "%s(buf, *genp++);\n", upp_case); 710 711 } else 712 f_print(fout, "%s(buf);\n", upp_case); 713 if (!freed) 714 free(freeable); 715 716 } 717 718 719 char * 720 upcase(const char *str) 721 { 722 char *ptr, *hptr; 723 724 725 ptr = (char *) malloc(strlen(str) + 1); 726 if (ptr == NULL) { 727 f_print(stderr, "malloc failed\n"); 728 exit(1); 729 }; 730 731 hptr = ptr; 732 while (*str != '\0') 733 *ptr++ = toupper((unsigned char)*str++); 734 735 *ptr = '\0'; 736 return (hptr); 737 738 } 739
Indexes created Wed Sep 24 22:09:59 GMT 2025