| 1 | /* $RCSfile: eval.c,v $$Revision: 4.0.1.4 $$Date: 92/06/08 13:20:20 $ |
| 2 | * |
| 3 | * Copyright (c) 1991, Larry Wall |
| 4 | * |
| 5 | * You may distribute under the terms of either the GNU General Public |
| 6 | * License or the Artistic License, as specified in the README file. |
| 7 | * |
| 8 | * $Log: eval.c,v $ |
| 9 | * Revision 4.0.1.4 92/06/08 13:20:20 lwall |
| 10 | * patch20: added explicit time_t support |
| 11 | * patch20: fixed confusion between a *var's real name and its effective name |
| 12 | * patch20: added Atari ST portability |
| 13 | * patch20: new warning for use of x with non-numeric right operand |
| 14 | * patch20: modulus with highest bit in left operand set didn't always work |
| 15 | * patch20: dbmclose(%array) didn't work |
| 16 | * patch20: added ... as variant on .. |
| 17 | * patch20: O_PIPE conflicted with Atari |
| 18 | * |
| 19 | * Revision 4.0.1.3 91/11/05 17:15:21 lwall |
| 20 | * patch11: prepared for ctype implementations that don't define isascii() |
| 21 | * patch11: various portability fixes |
| 22 | * patch11: added sort {} LIST |
| 23 | * patch11: added eval {} |
| 24 | * patch11: sysread() in socket was substituting recv() |
| 25 | * patch11: a last statement outside any block caused occasional core dumps |
| 26 | * patch11: missing arguments caused core dump in -D8 code |
| 27 | * patch11: eval 'stuff' now optimized to eval {stuff} |
| 28 | * |
| 29 | * Revision 4.0.1.2 91/06/07 11:07:23 lwall |
| 30 | * patch4: new copyright notice |
| 31 | * patch4: length($`), length($&), length($') now optimized to avoid string copy |
| 32 | * patch4: assignment wasn't correctly de-tainting the assigned variable. |
| 33 | * patch4: default top-of-form format is now FILEHANDLE_TOP |
| 34 | * patch4: added $^P variable to control calling of perldb routines |
| 35 | * patch4: taintchecks could improperly modify parent in vfork() |
| 36 | * patch4: many, many itty-bitty portability fixes |
| 37 | * |
| 38 | * Revision 4.0.1.1 91/04/11 17:43:48 lwall |
| 39 | * patch1: fixed failed fork to return undef as documented |
| 40 | * patch1: reduced maximum branch distance in eval.c |
| 41 | * |
| 42 | * Revision 4.0 91/03/20 01:16:48 lwall |
| 43 | * 4.0 baseline. |
| 44 | * |
| 45 | */ |
| 46 | |
| 47 | #include "EXTERN.h" |
| 48 | #include "perl.h" |
| 49 | |
| 50 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) |
| 51 | #include <signal.h> |
| 52 | #endif |
| 53 | |
| 54 | #ifdef I_FCNTL |
| 55 | #include <fcntl.h> |
| 56 | #endif |
| 57 | #ifdef MSDOS |
| 58 | /* I_FCNTL *MUST* not be defined for MS-DOS and OS/2 |
| 59 | but fcntl.h is required for O_BINARY */ |
| 60 | #include <fcntl.h> |
| 61 | #endif |
| 62 | #ifdef I_SYS_FILE |
| 63 | #include <sys/file.h> |
| 64 | #endif |
| 65 | #ifdef I_VFORK |
| 66 | # include <vfork.h> |
| 67 | #endif |
| 68 | |
| 69 | #ifdef VOIDSIG |
| 70 | static void (*ihand)(); |
| 71 | static void (*qhand)(); |
| 72 | #else |
| 73 | static int (*ihand)(); |
| 74 | static int (*qhand)(); |
| 75 | #endif |
| 76 | |
| 77 | ARG *debarg; |
| 78 | STR str_args; |
| 79 | static STAB *stab2; |
| 80 | static STIO *stio; |
| 81 | static struct lstring *lstr; |
| 82 | static int old_rschar; |
| 83 | static int old_rslen; |
| 84 | |
| 85 | double sin(), cos(), atan2(), pow(); |
| 86 | |
| 87 | char *getlogin(); |
| 88 | |
| 89 | int |
| 90 | eval(arg,gimme,sp) |
| 91 | register ARG *arg; |
| 92 | int gimme; |
| 93 | register int sp; |
| 94 | { |
| 95 | register STR *str; |
| 96 | register int anum; |
| 97 | register int optype; |
| 98 | register STR **st; |
| 99 | int maxarg; |
| 100 | double value; |
| 101 | register char *tmps; |
| 102 | char *tmps2; |
| 103 | int argflags; |
| 104 | int argtype; |
| 105 | union argptr argptr; |
| 106 | int arglast[8]; /* highest sp for arg--valid only for non-O_LIST args */ |
| 107 | unsigned long tmpulong; |
| 108 | long tmplong; |
| 109 | time_t when; |
| 110 | STRLEN tmplen; |
| 111 | FILE *fp; |
| 112 | STR *tmpstr; |
| 113 | FCMD *form; |
| 114 | STAB *stab; |
| 115 | ARRAY *ary; |
| 116 | bool assigning = FALSE; |
| 117 | double exp(), log(), sqrt(), modf(); |
| 118 | char *crypt(), *getenv(); |
| 119 | extern void grow_dlevel(); |
| 120 | |
| 121 | if (!arg) |
| 122 | goto say_undef; |
| 123 | optype = arg->arg_type; |
| 124 | maxarg = arg->arg_len; |
| 125 | arglast[0] = sp; |
| 126 | str = arg->arg_ptr.arg_str; |
| 127 | if (sp + maxarg > stack->ary_max) |
| 128 | astore(stack, sp + maxarg, Nullstr); |
| 129 | st = stack->ary_array; |
| 130 | |
| 131 | #ifdef DEBUGGING |
| 132 | if (debug) { |
| 133 | if (debug & 8) { |
| 134 | deb("%s (%lx) %d args:\n",opname[optype],arg,maxarg); |
| 135 | } |
| 136 | debname[dlevel] = opname[optype][0]; |
| 137 | debdelim[dlevel] = ':'; |
| 138 | if (++dlevel >= dlmax) |
| 139 | grow_dlevel(); |
| 140 | } |
| 141 | #endif |
| 142 | |
| 143 | for (anum = 1; anum <= maxarg; anum++) { |
| 144 | argflags = arg[anum].arg_flags; |
| 145 | argtype = arg[anum].arg_type; |
| 146 | argptr = arg[anum].arg_ptr; |
| 147 | re_eval: |
| 148 | switch (argtype) { |
| 149 | default: |
| 150 | st[++sp] = &str_undef; |
| 151 | #ifdef DEBUGGING |
| 152 | tmps = "NULL"; |
| 153 | #endif |
| 154 | break; |
| 155 | case A_EXPR: |
| 156 | #ifdef DEBUGGING |
| 157 | if (debug & 8) { |
| 158 | tmps = "EXPR"; |
| 159 | deb("%d.EXPR =>\n",anum); |
| 160 | } |
| 161 | #endif |
| 162 | sp = eval(argptr.arg_arg, |
| 163 | (argflags & AF_ARYOK) ? G_ARRAY : G_SCALAR, sp); |
| 164 | if (sp + (maxarg - anum) > stack->ary_max) |
| 165 | astore(stack, sp + (maxarg - anum), Nullstr); |
| 166 | st = stack->ary_array; /* possibly reallocated */ |
| 167 | break; |
| 168 | case A_CMD: |
| 169 | #ifdef DEBUGGING |
| 170 | if (debug & 8) { |
| 171 | tmps = "CMD"; |
| 172 | deb("%d.CMD (%lx) =>\n",anum,argptr.arg_cmd); |
| 173 | } |
| 174 | #endif |
| 175 | sp = cmd_exec(argptr.arg_cmd, gimme, sp); |
| 176 | if (sp + (maxarg - anum) > stack->ary_max) |
| 177 | astore(stack, sp + (maxarg - anum), Nullstr); |
| 178 | st = stack->ary_array; /* possibly reallocated */ |
| 179 | break; |
| 180 | case A_LARYSTAB: |
| 181 | ++sp; |
| 182 | switch (optype) { |
| 183 | case O_ITEM2: argtype = 2; break; |
| 184 | case O_ITEM3: argtype = 3; break; |
| 185 | default: argtype = anum; break; |
| 186 | } |
| 187 | str = afetch(stab_array(argptr.arg_stab), |
| 188 | arg[argtype].arg_len - arybase, TRUE); |
| 189 | #ifdef DEBUGGING |
| 190 | if (debug & 8) { |
| 191 | (void)sprintf(buf,"LARYSTAB $%s[%d]",stab_name(argptr.arg_stab), |
| 192 | arg[argtype].arg_len); |
| 193 | tmps = buf; |
| 194 | } |
| 195 | #endif |
| 196 | goto do_crement; |
| 197 | case A_ARYSTAB: |
| 198 | switch (optype) { |
| 199 | case O_ITEM2: argtype = 2; break; |
| 200 | case O_ITEM3: argtype = 3; break; |
| 201 | default: argtype = anum; break; |
| 202 | } |
| 203 | st[++sp] = afetch(stab_array(argptr.arg_stab), |
| 204 | arg[argtype].arg_len - arybase, FALSE); |
| 205 | #ifdef DEBUGGING |
| 206 | if (debug & 8) { |
| 207 | (void)sprintf(buf,"ARYSTAB $%s[%d]",stab_name(argptr.arg_stab), |
| 208 | arg[argtype].arg_len); |
| 209 | tmps = buf; |
| 210 | } |
| 211 | #endif |
| 212 | break; |
| 213 | case A_STAR: |
| 214 | stab = argptr.arg_stab; |
| 215 | st[++sp] = (STR*)stab; |
| 216 | if (!stab_xarray(stab)) |
| 217 | aadd(stab); |
| 218 | if (!stab_xhash(stab)) |
| 219 | hadd(stab); |
| 220 | if (!stab_io(stab)) |
| 221 | stab_io(stab) = stio_new(); |
| 222 | #ifdef DEBUGGING |
| 223 | if (debug & 8) { |
| 224 | (void)sprintf(buf,"STAR *%s -> *%s", |
| 225 | stab_name(argptr.arg_stab), stab_ename(argptr.arg_stab)); |
| 226 | tmps = buf; |
| 227 | } |
| 228 | #endif |
| 229 | break; |
| 230 | case A_LSTAR: |
| 231 | str = st[++sp] = (STR*)argptr.arg_stab; |
| 232 | #ifdef DEBUGGING |
| 233 | if (debug & 8) { |
| 234 | (void)sprintf(buf,"LSTAR *%s -> *%s", |
| 235 | stab_name(argptr.arg_stab), stab_ename(argptr.arg_stab)); |
| 236 | tmps = buf; |
| 237 | } |
| 238 | #endif |
| 239 | break; |
| 240 | case A_STAB: |
| 241 | st[++sp] = STAB_STR(argptr.arg_stab); |
| 242 | #ifdef DEBUGGING |
| 243 | if (debug & 8) { |
| 244 | (void)sprintf(buf,"STAB $%s",stab_name(argptr.arg_stab)); |
| 245 | tmps = buf; |
| 246 | } |
| 247 | #endif |
| 248 | break; |
| 249 | case A_LENSTAB: |
| 250 | str_numset(str, (double)STAB_LEN(argptr.arg_stab)); |
| 251 | st[++sp] = str; |
| 252 | #ifdef DEBUGGING |
| 253 | if (debug & 8) { |
| 254 | (void)sprintf(buf,"LENSTAB $%s",stab_name(argptr.arg_stab)); |
| 255 | tmps = buf; |
| 256 | } |
| 257 | #endif |
| 258 | break; |
| 259 | case A_LEXPR: |
| 260 | #ifdef DEBUGGING |
| 261 | if (debug & 8) { |
| 262 | tmps = "LEXPR"; |
| 263 | deb("%d.LEXPR =>\n",anum); |
| 264 | } |
| 265 | #endif |
| 266 | if (argflags & AF_ARYOK) { |
| 267 | sp = eval(argptr.arg_arg, G_ARRAY, sp); |
| 268 | if (sp + (maxarg - anum) > stack->ary_max) |
| 269 | astore(stack, sp + (maxarg - anum), Nullstr); |
| 270 | st = stack->ary_array; /* possibly reallocated */ |
| 271 | } |
| 272 | else { |
| 273 | sp = eval(argptr.arg_arg, G_SCALAR, sp); |
| 274 | st = stack->ary_array; /* possibly reallocated */ |
| 275 | str = st[sp]; |
| 276 | goto do_crement; |
| 277 | } |
| 278 | break; |
| 279 | case A_LVAL: |
| 280 | #ifdef DEBUGGING |
| 281 | if (debug & 8) { |
| 282 | (void)sprintf(buf,"LVAL $%s",stab_name(argptr.arg_stab)); |
| 283 | tmps = buf; |
| 284 | } |
| 285 | #endif |
| 286 | ++sp; |
| 287 | str = STAB_STR(argptr.arg_stab); |
| 288 | if (!str) |
| 289 | fatal("panic: A_LVAL"); |
| 290 | do_crement: |
| 291 | assigning = TRUE; |
| 292 | if (argflags & AF_PRE) { |
| 293 | if (argflags & AF_UP) |
| 294 | str_inc(str); |
| 295 | else |
| 296 | str_dec(str); |
| 297 | STABSET(str); |
| 298 | st[sp] = str; |
| 299 | str = arg->arg_ptr.arg_str; |
| 300 | } |
| 301 | else if (argflags & AF_POST) { |
| 302 | st[sp] = str_mortal(str); |
| 303 | if (argflags & AF_UP) |
| 304 | str_inc(str); |
| 305 | else |
| 306 | str_dec(str); |
| 307 | STABSET(str); |
| 308 | str = arg->arg_ptr.arg_str; |
| 309 | } |
| 310 | else |
| 311 | st[sp] = str; |
| 312 | break; |
| 313 | case A_LARYLEN: |
| 314 | ++sp; |
| 315 | stab = argptr.arg_stab; |
| 316 | str = stab_array(argptr.arg_stab)->ary_magic; |
| 317 | if (optype != O_SASSIGN || argflags & (AF_PRE|AF_POST)) |
| 318 | str_numset(str,(double)(stab_array(stab)->ary_fill+arybase)); |
| 319 | #ifdef DEBUGGING |
| 320 | tmps = "LARYLEN"; |
| 321 | #endif |
| 322 | if (!str) |
| 323 | fatal("panic: A_LEXPR"); |
| 324 | goto do_crement; |
| 325 | case A_ARYLEN: |
| 326 | stab = argptr.arg_stab; |
| 327 | st[++sp] = stab_array(stab)->ary_magic; |
| 328 | str_numset(st[sp],(double)(stab_array(stab)->ary_fill+arybase)); |
| 329 | #ifdef DEBUGGING |
| 330 | tmps = "ARYLEN"; |
| 331 | #endif |
| 332 | break; |
| 333 | case A_SINGLE: |
| 334 | st[++sp] = argptr.arg_str; |
| 335 | #ifdef DEBUGGING |
| 336 | tmps = "SINGLE"; |
| 337 | #endif |
| 338 | break; |
| 339 | case A_DOUBLE: |
| 340 | (void) interp(str,argptr.arg_str,sp); |
| 341 | st = stack->ary_array; |
| 342 | st[++sp] = str; |
| 343 | #ifdef DEBUGGING |
| 344 | tmps = "DOUBLE"; |
| 345 | #endif |
| 346 | break; |
| 347 | case A_BACKTICK: |
| 348 | tmps = str_get(interp(str,argptr.arg_str,sp)); |
| 349 | st = stack->ary_array; |
| 350 | #ifdef TAINT |
| 351 | taintproper("Insecure dependency in ``"); |
| 352 | #endif |
| 353 | fp = mypopen(tmps,"r"); |
| 354 | str_set(str,""); |
| 355 | if (fp) { |
| 356 | if (gimme == G_SCALAR) { |
| 357 | while (str_gets(str,fp,str->str_cur) != Nullch) |
| 358 | /*SUPPRESS 530*/ |
| 359 | ; |
| 360 | } |
| 361 | else { |
| 362 | for (;;) { |
| 363 | if (++sp > stack->ary_max) { |
| 364 | astore(stack, sp, Nullstr); |
| 365 | st = stack->ary_array; |
| 366 | } |
| 367 | str = st[sp] = Str_new(56,80); |
| 368 | if (str_gets(str,fp,0) == Nullch) { |
| 369 | sp--; |
| 370 | break; |
| 371 | } |
| 372 | if (str->str_len - str->str_cur > 20) { |
| 373 | str->str_len = str->str_cur+1; |
| 374 | Renew(str->str_ptr, str->str_len, char); |
| 375 | } |
| 376 | str_2mortal(str); |
| 377 | } |
| 378 | } |
| 379 | statusvalue = mypclose(fp); |
| 380 | } |
| 381 | else |
| 382 | statusvalue = -1; |
| 383 | |
| 384 | if (gimme == G_SCALAR) |
| 385 | st[++sp] = str; |
| 386 | #ifdef DEBUGGING |
| 387 | tmps = "BACK"; |
| 388 | #endif |
| 389 | break; |
| 390 | case A_WANTARRAY: |
| 391 | { |
| 392 | if (curcsv->wantarray == G_ARRAY) |
| 393 | st[++sp] = &str_yes; |
| 394 | else |
| 395 | st[++sp] = &str_no; |
| 396 | } |
| 397 | #ifdef DEBUGGING |
| 398 | tmps = "WANTARRAY"; |
| 399 | #endif |
| 400 | break; |
| 401 | case A_INDREAD: |
| 402 | last_in_stab = stabent(str_get(STAB_STR(argptr.arg_stab)),TRUE); |
| 403 | old_rschar = rschar; |
| 404 | old_rslen = rslen; |
| 405 | goto do_read; |
| 406 | case A_GLOB: |
| 407 | argflags |= AF_POST; /* enable newline chopping */ |
| 408 | last_in_stab = argptr.arg_stab; |
| 409 | old_rschar = rschar; |
| 410 | old_rslen = rslen; |
| 411 | rslen = 1; |
| 412 | #ifdef DOSISH |
| 413 | rschar = 0; |
| 414 | #else |
| 415 | #ifdef CSH |
| 416 | rschar = 0; |
| 417 | #else |
| 418 | rschar = '\n'; |
| 419 | #endif /* !CSH */ |
| 420 | #endif /* !MSDOS */ |
| 421 | goto do_read; |
| 422 | case A_READ: |
| 423 | last_in_stab = argptr.arg_stab; |
| 424 | old_rschar = rschar; |
| 425 | old_rslen = rslen; |
| 426 | do_read: |
| 427 | if (anum > 1) /* assign to scalar */ |
| 428 | gimme = G_SCALAR; /* force context to scalar */ |
| 429 | if (gimme == G_ARRAY) |
| 430 | str = Str_new(57,0); |
| 431 | ++sp; |
| 432 | fp = Nullfp; |
| 433 | if (stab_io(last_in_stab)) { |
| 434 | fp = stab_io(last_in_stab)->ifp; |
| 435 | if (!fp) { |
| 436 | if (stab_io(last_in_stab)->flags & IOF_ARGV) { |
| 437 | if (stab_io(last_in_stab)->flags & IOF_START) { |
| 438 | stab_io(last_in_stab)->flags &= ~IOF_START; |
| 439 | stab_io(last_in_stab)->lines = 0; |
| 440 | if (alen(stab_array(last_in_stab)) < 0) { |
| 441 | tmpstr = str_make("-",1); /* assume stdin */ |
| 442 | (void)apush(stab_array(last_in_stab), tmpstr); |
| 443 | } |
| 444 | } |
| 445 | fp = nextargv(last_in_stab); |
| 446 | if (!fp) { /* Note: fp != stab_io(last_in_stab)->ifp */ |
| 447 | (void)do_close(last_in_stab,FALSE); /* now it does*/ |
| 448 | stab_io(last_in_stab)->flags |= IOF_START; |
| 449 | } |
| 450 | } |
| 451 | else if (argtype == A_GLOB) { |
| 452 | (void) interp(str,stab_val(last_in_stab),sp); |
| 453 | st = stack->ary_array; |
| 454 | tmpstr = Str_new(55,0); |
| 455 | #ifdef DOSISH |
| 456 | str_set(tmpstr, "perlglob "); |
| 457 | str_scat(tmpstr,str); |
| 458 | str_cat(tmpstr," |"); |
| 459 | #else |
| 460 | #ifdef CSH |
| 461 | str_nset(tmpstr,cshname,cshlen); |
| 462 | str_cat(tmpstr," -cf 'set nonomatch; glob "); |
| 463 | str_scat(tmpstr,str); |
| 464 | str_cat(tmpstr,"'|"); |
| 465 | #else |
| 466 | str_set(tmpstr, "echo "); |
| 467 | str_scat(tmpstr,str); |
| 468 | str_cat(tmpstr, |
| 469 | "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|"); |
| 470 | #endif /* !CSH */ |
| 471 | #endif /* !MSDOS */ |
| 472 | (void)do_open(last_in_stab,tmpstr->str_ptr, |
| 473 | tmpstr->str_cur); |
| 474 | fp = stab_io(last_in_stab)->ifp; |
| 475 | str_free(tmpstr); |
| 476 | } |
| 477 | } |
| 478 | } |
| 479 | if (!fp && dowarn) |
| 480 | warn("Read on closed filehandle <%s>",stab_ename(last_in_stab)); |
| 481 | tmplen = str->str_len; /* remember if already alloced */ |
| 482 | if (!tmplen) |
| 483 | Str_Grow(str,80); /* try short-buffering it */ |
| 484 | keepgoing: |
| 485 | if (!fp) |
| 486 | st[sp] = &str_undef; |
| 487 | else if (!str_gets(str,fp, optype == O_RCAT ? str->str_cur : 0)) { |
| 488 | clearerr(fp); |
| 489 | if (stab_io(last_in_stab)->flags & IOF_ARGV) { |
| 490 | fp = nextargv(last_in_stab); |
| 491 | if (fp) |
| 492 | goto keepgoing; |
| 493 | (void)do_close(last_in_stab,FALSE); |
| 494 | stab_io(last_in_stab)->flags |= IOF_START; |
| 495 | } |
| 496 | else if (argflags & AF_POST) { |
| 497 | (void)do_close(last_in_stab,FALSE); |
| 498 | } |
| 499 | st[sp] = &str_undef; |
| 500 | rschar = old_rschar; |
| 501 | rslen = old_rslen; |
| 502 | if (gimme == G_ARRAY) { |
| 503 | --sp; |
| 504 | str_2mortal(str); |
| 505 | goto array_return; |
| 506 | } |
| 507 | break; |
| 508 | } |
| 509 | else { |
| 510 | stab_io(last_in_stab)->lines++; |
| 511 | st[sp] = str; |
| 512 | #ifdef TAINT |
| 513 | str->str_tainted = 1; /* Anything from the outside world...*/ |
| 514 | #endif |
| 515 | if (argflags & AF_POST) { |
| 516 | if (str->str_cur > 0) |
| 517 | str->str_cur--; |
| 518 | if (str->str_ptr[str->str_cur] == rschar) |
| 519 | str->str_ptr[str->str_cur] = '\0'; |
| 520 | else |
| 521 | str->str_cur++; |
| 522 | for (tmps = str->str_ptr; *tmps; tmps++) |
| 523 | if (!isALPHA(*tmps) && !isDIGIT(*tmps) && |
| 524 | index("$&*(){}[]'\";\\|?<>~`",*tmps)) |
| 525 | break; |
| 526 | if (*tmps && stat(str->str_ptr,&statbuf) < 0) |
| 527 | goto keepgoing; /* unmatched wildcard? */ |
| 528 | } |
| 529 | if (gimme == G_ARRAY) { |
| 530 | if (str->str_len - str->str_cur > 20) { |
| 531 | str->str_len = str->str_cur+1; |
| 532 | Renew(str->str_ptr, str->str_len, char); |
| 533 | } |
| 534 | str_2mortal(str); |
| 535 | if (++sp > stack->ary_max) { |
| 536 | astore(stack, sp, Nullstr); |
| 537 | st = stack->ary_array; |
| 538 | } |
| 539 | str = Str_new(58,80); |
| 540 | goto keepgoing; |
| 541 | } |
| 542 | else if (!tmplen && str->str_len - str->str_cur > 80) { |
| 543 | /* try to reclaim a bit of scalar space on 1st alloc */ |
| 544 | if (str->str_cur < 60) |
| 545 | str->str_len = 80; |
| 546 | else |
| 547 | str->str_len = str->str_cur+40; /* allow some slop */ |
| 548 | Renew(str->str_ptr, str->str_len, char); |
| 549 | } |
| 550 | } |
| 551 | rschar = old_rschar; |
| 552 | rslen = old_rslen; |
| 553 | #ifdef DEBUGGING |
| 554 | tmps = "READ"; |
| 555 | #endif |
| 556 | break; |
| 557 | } |
| 558 | #ifdef DEBUGGING |
| 559 | if (debug & 8) |
| 560 | deb("%d.%s = '%s'\n",anum,tmps,str_peek(st[sp])); |
| 561 | #endif |
| 562 | if (anum < 8) |
| 563 | arglast[anum] = sp; |
| 564 | } |
| 565 | |
| 566 | st += arglast[0]; |
| 567 | #ifdef SMALLSWITCHES |
| 568 | if (optype < O_CHOWN) |
| 569 | #endif |
| 570 | switch (optype) { |
| 571 | case O_RCAT: |
| 572 | STABSET(str); |
| 573 | break; |
| 574 | case O_ITEM: |
| 575 | if (gimme == G_ARRAY) |
| 576 | goto array_return; |
| 577 | /* FALL THROUGH */ |
| 578 | case O_SCALAR: |
| 579 | STR_SSET(str,st[1]); |
| 580 | STABSET(str); |
| 581 | break; |
| 582 | case O_ITEM2: |
| 583 | if (gimme == G_ARRAY) |
| 584 | goto array_return; |
| 585 | --anum; |
| 586 | STR_SSET(str,st[arglast[anum]-arglast[0]]); |
| 587 | STABSET(str); |
| 588 | break; |
| 589 | case O_ITEM3: |
| 590 | if (gimme == G_ARRAY) |
| 591 | goto array_return; |
| 592 | --anum; |
| 593 | STR_SSET(str,st[arglast[anum]-arglast[0]]); |
| 594 | STABSET(str); |
| 595 | break; |
| 596 | case O_CONCAT: |
| 597 | STR_SSET(str,st[1]); |
| 598 | str_scat(str,st[2]); |
| 599 | STABSET(str); |
| 600 | break; |
| 601 | case O_REPEAT: |
| 602 | if (gimme == G_ARRAY && arg[1].arg_flags & AF_ARYOK) { |
| 603 | sp = do_repeatary(arglast); |
| 604 | goto array_return; |
| 605 | } |
| 606 | STR_SSET(str,st[1]); |
| 607 | anum = (int)str_gnum(st[2]); |
| 608 | if (anum >= 1) { |
| 609 | tmpstr = Str_new(50, 0); |
| 610 | tmps = str_get(str); |
| 611 | str_nset(tmpstr,tmps,str->str_cur); |
| 612 | tmps = str_get(tmpstr); /* force to be string */ |
| 613 | STR_GROW(str, (anum * str->str_cur) + 1); |
| 614 | repeatcpy(str->str_ptr, tmps, tmpstr->str_cur, anum); |
| 615 | str->str_cur *= anum; |
| 616 | str->str_ptr[str->str_cur] = '\0'; |
| 617 | str->str_nok = 0; |
| 618 | str_free(tmpstr); |
| 619 | } |
| 620 | else { |
| 621 | if (dowarn && st[2]->str_pok && !looks_like_number(st[2])) |
| 622 | warn("Right operand of x is not numeric"); |
| 623 | str_sset(str,&str_no); |
| 624 | } |
| 625 | STABSET(str); |
| 626 | break; |
| 627 | case O_MATCH: |
| 628 | sp = do_match(str,arg, |
| 629 | gimme,arglast); |
| 630 | if (gimme == G_ARRAY) |
| 631 | goto array_return; |
| 632 | STABSET(str); |
| 633 | break; |
| 634 | case O_NMATCH: |
| 635 | sp = do_match(str,arg, |
| 636 | G_SCALAR,arglast); |
| 637 | str_sset(str, str_true(str) ? &str_no : &str_yes); |
| 638 | STABSET(str); |
| 639 | break; |
| 640 | case O_SUBST: |
| 641 | sp = do_subst(str,arg,arglast[0]); |
| 642 | goto array_return; |
| 643 | case O_NSUBST: |
| 644 | sp = do_subst(str,arg,arglast[0]); |
| 645 | str = arg->arg_ptr.arg_str; |
| 646 | str_set(str, str_true(str) ? No : Yes); |
| 647 | goto array_return; |
| 648 | case O_ASSIGN: |
| 649 | if (arg[1].arg_flags & AF_ARYOK) { |
| 650 | if (arg->arg_len == 1) { |
| 651 | arg->arg_type = O_LOCAL; |
| 652 | goto local; |
| 653 | } |
| 654 | else { |
| 655 | arg->arg_type = O_AASSIGN; |
| 656 | goto aassign; |
| 657 | } |
| 658 | } |
| 659 | else { |
| 660 | arg->arg_type = O_SASSIGN; |
| 661 | goto sassign; |
| 662 | } |
| 663 | case O_LOCAL: |
| 664 | local: |
| 665 | arglast[2] = arglast[1]; /* push a null array */ |
| 666 | /* FALL THROUGH */ |
| 667 | case O_AASSIGN: |
| 668 | aassign: |
| 669 | sp = do_assign(arg, |
| 670 | gimme,arglast); |
| 671 | goto array_return; |
| 672 | case O_SASSIGN: |
| 673 | sassign: |
| 674 | #ifdef TAINT |
| 675 | if (tainted && !st[2]->str_tainted) |
| 676 | tainted = 0; |
| 677 | #endif |
| 678 | STR_SSET(str, st[2]); |
| 679 | STABSET(str); |
| 680 | break; |
| 681 | case O_CHOP: |
| 682 | st -= arglast[0]; |
| 683 | str = arg->arg_ptr.arg_str; |
| 684 | for (sp = arglast[0] + 1; sp <= arglast[1]; sp++) |
| 685 | do_chop(str,st[sp]); |
| 686 | st += arglast[0]; |
| 687 | break; |
| 688 | case O_DEFINED: |
| 689 | if (arg[1].arg_type & A_DONT) { |
| 690 | sp = do_defined(str,arg, |
| 691 | gimme,arglast); |
| 692 | goto array_return; |
| 693 | } |
| 694 | else if (str->str_pok || str->str_nok) |
| 695 | goto say_yes; |
| 696 | goto say_no; |
| 697 | case O_UNDEF: |
| 698 | if (arg[1].arg_type & A_DONT) { |
| 699 | sp = do_undef(str,arg, |
| 700 | gimme,arglast); |
| 701 | goto array_return; |
| 702 | } |
| 703 | else if (str != stab_val(defstab)) { |
| 704 | if (str->str_len) { |
| 705 | if (str->str_state == SS_INCR) |
| 706 | Str_Grow(str,0); |
| 707 | Safefree(str->str_ptr); |
| 708 | str->str_ptr = Nullch; |
| 709 | str->str_len = 0; |
| 710 | } |
| 711 | str->str_pok = str->str_nok = 0; |
| 712 | STABSET(str); |
| 713 | } |
| 714 | goto say_undef; |
| 715 | case O_STUDY: |
| 716 | sp = do_study(str,arg, |
| 717 | gimme,arglast); |
| 718 | goto array_return; |
| 719 | case O_POW: |
| 720 | value = str_gnum(st[1]); |
| 721 | value = pow(value,str_gnum(st[2])); |
| 722 | goto donumset; |
| 723 | case O_MULTIPLY: |
| 724 | value = str_gnum(st[1]); |
| 725 | value *= str_gnum(st[2]); |
| 726 | goto donumset; |
| 727 | case O_DIVIDE: |
| 728 | if ((value = str_gnum(st[2])) == 0.0) |
| 729 | fatal("Illegal division by zero"); |
| 730 | #ifdef SLOPPYDIVIDE |
| 731 | /* insure that 20./5. == 4. */ |
| 732 | { |
| 733 | double x; |
| 734 | int k; |
| 735 | x = str_gnum(st[1]); |
| 736 | if ((double)(int)x == x && |
| 737 | (double)(int)value == value && |
| 738 | (k = (int)x/(int)value)*(int)value == (int)x) { |
| 739 | value = k; |
| 740 | } else { |
| 741 | value = x/value; |
| 742 | } |
| 743 | } |
| 744 | #else |
| 745 | value = str_gnum(st[1]) / value; |
| 746 | #endif |
| 747 | goto donumset; |
| 748 | case O_MODULO: |
| 749 | tmpulong = (unsigned long) str_gnum(st[2]); |
| 750 | if (tmpulong == 0L) |
| 751 | fatal("Illegal modulus zero"); |
| 752 | #ifndef lint |
| 753 | value = str_gnum(st[1]); |
| 754 | if (value >= 0.0) |
| 755 | value = (double)(((unsigned long)value) % tmpulong); |
| 756 | else { |
| 757 | tmplong = (long)value; |
| 758 | value = (double)(tmpulong - ((-tmplong - 1) % tmpulong)) - 1; |
| 759 | } |
| 760 | #endif |
| 761 | goto donumset; |
| 762 | case O_ADD: |
| 763 | value = str_gnum(st[1]); |
| 764 | value += str_gnum(st[2]); |
| 765 | goto donumset; |
| 766 | case O_SUBTRACT: |
| 767 | value = str_gnum(st[1]); |
| 768 | value -= str_gnum(st[2]); |
| 769 | goto donumset; |
| 770 | case O_LEFT_SHIFT: |
| 771 | value = str_gnum(st[1]); |
| 772 | anum = (int)str_gnum(st[2]); |
| 773 | #ifndef lint |
| 774 | value = (double)(U_L(value) << anum); |
| 775 | #endif |
| 776 | goto donumset; |
| 777 | case O_RIGHT_SHIFT: |
| 778 | value = str_gnum(st[1]); |
| 779 | anum = (int)str_gnum(st[2]); |
| 780 | #ifndef lint |
| 781 | value = (double)(U_L(value) >> anum); |
| 782 | #endif |
| 783 | goto donumset; |
| 784 | case O_LT: |
| 785 | value = str_gnum(st[1]); |
| 786 | value = (value < str_gnum(st[2])) ? 1.0 : 0.0; |
| 787 | goto donumset; |
| 788 | case O_GT: |
| 789 | value = str_gnum(st[1]); |
| 790 | value = (value > str_gnum(st[2])) ? 1.0 : 0.0; |
| 791 | goto donumset; |
| 792 | case O_LE: |
| 793 | value = str_gnum(st[1]); |
| 794 | value = (value <= str_gnum(st[2])) ? 1.0 : 0.0; |
| 795 | goto donumset; |
| 796 | case O_GE: |
| 797 | value = str_gnum(st[1]); |
| 798 | value = (value >= str_gnum(st[2])) ? 1.0 : 0.0; |
| 799 | goto donumset; |
| 800 | case O_EQ: |
| 801 | if (dowarn) { |
| 802 | if ((!st[1]->str_nok && !looks_like_number(st[1])) || |
| 803 | (!st[2]->str_nok && !looks_like_number(st[2])) ) |
| 804 | warn("Possible use of == on string value"); |
| 805 | } |
| 806 | value = str_gnum(st[1]); |
| 807 | value = (value == str_gnum(st[2])) ? 1.0 : 0.0; |
| 808 | goto donumset; |
| 809 | case O_NE: |
| 810 | value = str_gnum(st[1]); |
| 811 | value = (value != str_gnum(st[2])) ? 1.0 : 0.0; |
| 812 | goto donumset; |
| 813 | case O_NCMP: |
| 814 | value = str_gnum(st[1]); |
| 815 | value -= str_gnum(st[2]); |
| 816 | if (value > 0.0) |
| 817 | value = 1.0; |
| 818 | else if (value < 0.0) |
| 819 | value = -1.0; |
| 820 | goto donumset; |
| 821 | case O_BIT_AND: |
| 822 | if (!sawvec || st[1]->str_nok || st[2]->str_nok) { |
| 823 | value = str_gnum(st[1]); |
| 824 | #ifndef lint |
| 825 | value = (double)(U_L(value) & U_L(str_gnum(st[2]))); |
| 826 | #endif |
| 827 | goto donumset; |
| 828 | } |
| 829 | else |
| 830 | do_vop(optype,str,st[1],st[2]); |
| 831 | break; |
| 832 | case O_XOR: |
| 833 | if (!sawvec || st[1]->str_nok || st[2]->str_nok) { |
| 834 | value = str_gnum(st[1]); |
| 835 | #ifndef lint |
| 836 | value = (double)(U_L(value) ^ U_L(str_gnum(st[2]))); |
| 837 | #endif |
| 838 | goto donumset; |
| 839 | } |
| 840 | else |
| 841 | do_vop(optype,str,st[1],st[2]); |
| 842 | break; |
| 843 | case O_BIT_OR: |
| 844 | if (!sawvec || st[1]->str_nok || st[2]->str_nok) { |
| 845 | value = str_gnum(st[1]); |
| 846 | #ifndef lint |
| 847 | value = (double)(U_L(value) | U_L(str_gnum(st[2]))); |
| 848 | #endif |
| 849 | goto donumset; |
| 850 | } |
| 851 | else |
| 852 | do_vop(optype,str,st[1],st[2]); |
| 853 | break; |
| 854 | /* use register in evaluating str_true() */ |
| 855 | case O_AND: |
| 856 | if (str_true(st[1])) { |
| 857 | anum = 2; |
| 858 | optype = O_ITEM2; |
| 859 | argflags = arg[anum].arg_flags; |
| 860 | if (gimme == G_ARRAY) |
| 861 | argflags |= AF_ARYOK; |
| 862 | argtype = arg[anum].arg_type & A_MASK; |
| 863 | argptr = arg[anum].arg_ptr; |
| 864 | maxarg = anum = 1; |
| 865 | sp = arglast[0]; |
| 866 | st -= sp; |
| 867 | goto re_eval; |
| 868 | } |
| 869 | else { |
| 870 | if (assigning) { |
| 871 | str_sset(str, st[1]); |
| 872 | STABSET(str); |
| 873 | } |
| 874 | else |
| 875 | str = st[1]; |
| 876 | break; |
| 877 | } |
| 878 | case O_OR: |
| 879 | if (str_true(st[1])) { |
| 880 | if (assigning) { |
| 881 | str_sset(str, st[1]); |
| 882 | STABSET(str); |
| 883 | } |
| 884 | else |
| 885 | str = st[1]; |
| 886 | break; |
| 887 | } |
| 888 | else { |
| 889 | anum = 2; |
| 890 | optype = O_ITEM2; |
| 891 | argflags = arg[anum].arg_flags; |
| 892 | if (gimme == G_ARRAY) |
| 893 | argflags |= AF_ARYOK; |
| 894 | argtype = arg[anum].arg_type & A_MASK; |
| 895 | argptr = arg[anum].arg_ptr; |
| 896 | maxarg = anum = 1; |
| 897 | sp = arglast[0]; |
| 898 | st -= sp; |
| 899 | goto re_eval; |
| 900 | } |
| 901 | case O_COND_EXPR: |
| 902 | anum = (str_true(st[1]) ? 2 : 3); |
| 903 | optype = (anum == 2 ? O_ITEM2 : O_ITEM3); |
| 904 | argflags = arg[anum].arg_flags; |
| 905 | if (gimme == G_ARRAY) |
| 906 | argflags |= AF_ARYOK; |
| 907 | argtype = arg[anum].arg_type & A_MASK; |
| 908 | argptr = arg[anum].arg_ptr; |
| 909 | maxarg = anum = 1; |
| 910 | sp = arglast[0]; |
| 911 | st -= sp; |
| 912 | goto re_eval; |
| 913 | case O_COMMA: |
| 914 | if (gimme == G_ARRAY) |
| 915 | goto array_return; |
| 916 | str = st[2]; |
| 917 | break; |
| 918 | case O_NEGATE: |
| 919 | value = -str_gnum(st[1]); |
| 920 | goto donumset; |
| 921 | case O_NOT: |
| 922 | #ifdef NOTNOT |
| 923 | { char xxx = str_true(st[1]); value = (double) !xxx; } |
| 924 | #else |
| 925 | value = (double) !str_true(st[1]); |
| 926 | #endif |
| 927 | goto donumset; |
| 928 | case O_COMPLEMENT: |
| 929 | if (!sawvec || st[1]->str_nok) { |
| 930 | #ifndef lint |
| 931 | value = (double) ~U_L(str_gnum(st[1])); |
| 932 | #endif |
| 933 | goto donumset; |
| 934 | } |
| 935 | else { |
| 936 | STR_SSET(str,st[1]); |
| 937 | tmps = str_get(str); |
| 938 | for (anum = str->str_cur; anum; anum--, tmps++) |
| 939 | *tmps = ~*tmps; |
| 940 | } |
| 941 | break; |
| 942 | case O_SELECT: |
| 943 | stab_efullname(str,defoutstab); |
| 944 | if (maxarg > 0) { |
| 945 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
| 946 | defoutstab = arg[1].arg_ptr.arg_stab; |
| 947 | else |
| 948 | defoutstab = stabent(str_get(st[1]),TRUE); |
| 949 | if (!stab_io(defoutstab)) |
| 950 | stab_io(defoutstab) = stio_new(); |
| 951 | curoutstab = defoutstab; |
| 952 | } |
| 953 | STABSET(str); |
| 954 | break; |
| 955 | case O_WRITE: |
| 956 | if (maxarg == 0) |
| 957 | stab = defoutstab; |
| 958 | else if ((arg[1].arg_type & A_MASK) == A_WORD) { |
| 959 | if (!(stab = arg[1].arg_ptr.arg_stab)) |
| 960 | stab = defoutstab; |
| 961 | } |
| 962 | else |
| 963 | stab = stabent(str_get(st[1]),TRUE); |
| 964 | if (!stab_io(stab)) { |
| 965 | str_set(str, No); |
| 966 | STABSET(str); |
| 967 | break; |
| 968 | } |
| 969 | curoutstab = stab; |
| 970 | fp = stab_io(stab)->ofp; |
| 971 | debarg = arg; |
| 972 | if (stab_io(stab)->fmt_stab) |
| 973 | form = stab_form(stab_io(stab)->fmt_stab); |
| 974 | else |
| 975 | form = stab_form(stab); |
| 976 | if (!form || !fp) { |
| 977 | if (dowarn) { |
| 978 | if (form) |
| 979 | warn("No format for filehandle"); |
| 980 | else { |
| 981 | if (stab_io(stab)->ifp) |
| 982 | warn("Filehandle only opened for input"); |
| 983 | else |
| 984 | warn("Write on closed filehandle"); |
| 985 | } |
| 986 | } |
| 987 | str_set(str, No); |
| 988 | STABSET(str); |
| 989 | break; |
| 990 | } |
| 991 | format(&outrec,form,sp); |
| 992 | do_write(&outrec,stab,sp); |
| 993 | if (stab_io(stab)->flags & IOF_FLUSH) |
| 994 | (void)fflush(fp); |
| 995 | str_set(str, Yes); |
| 996 | STABSET(str); |
| 997 | break; |
| 998 | case O_DBMOPEN: |
| 999 | #ifdef SOME_DBM |
| 1000 | anum = arg[1].arg_type & A_MASK; |
| 1001 | if (anum == A_WORD || anum == A_STAB) |
| 1002 | stab = arg[1].arg_ptr.arg_stab; |
| 1003 | else |
| 1004 | stab = stabent(str_get(st[1]),TRUE); |
| 1005 | if (st[3]->str_nok || st[3]->str_pok) |
| 1006 | anum = (int)str_gnum(st[3]); |
| 1007 | else |
| 1008 | anum = -1; |
| 1009 | value = (double)hdbmopen(stab_hash(stab),str_get(st[2]),anum); |
| 1010 | goto donumset; |
| 1011 | #else |
| 1012 | fatal("No dbm or ndbm on this machine"); |
| 1013 | #endif |
| 1014 | case O_DBMCLOSE: |
| 1015 | #ifdef SOME_DBM |
| 1016 | anum = arg[1].arg_type & A_MASK; |
| 1017 | if (anum == A_WORD || anum == A_STAB) |
| 1018 | stab = arg[1].arg_ptr.arg_stab; |
| 1019 | else |
| 1020 | stab = stabent(str_get(st[1]),TRUE); |
| 1021 | hdbmclose(stab_hash(stab)); |
| 1022 | goto say_yes; |
| 1023 | #else |
| 1024 | fatal("No dbm or ndbm on this machine"); |
| 1025 | #endif |
| 1026 | case O_OPEN: |
| 1027 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
| 1028 | stab = arg[1].arg_ptr.arg_stab; |
| 1029 | else |
| 1030 | stab = stabent(str_get(st[1]),TRUE); |
| 1031 | tmps = str_get(st[2]); |
| 1032 | if (do_open(stab,tmps,st[2]->str_cur)) { |
| 1033 | value = (double)forkprocess; |
| 1034 | stab_io(stab)->lines = 0; |
| 1035 | goto donumset; |
| 1036 | } |
| 1037 | else if (forkprocess == 0) /* we are a new child */ |
| 1038 | goto say_zero; |
| 1039 | else |
| 1040 | goto say_undef; |
| 1041 | /* break; */ |
| 1042 | case O_TRANS: |
| 1043 | value = (double) do_trans(str,arg); |
| 1044 | str = arg->arg_ptr.arg_str; |
| 1045 | goto donumset; |
| 1046 | case O_NTRANS: |
| 1047 | str_set(arg->arg_ptr.arg_str, do_trans(str,arg) == 0 ? Yes : No); |
| 1048 | str = arg->arg_ptr.arg_str; |
| 1049 | break; |
| 1050 | case O_CLOSE: |
| 1051 | if (maxarg == 0) |
| 1052 | stab = defoutstab; |
| 1053 | else if ((arg[1].arg_type & A_MASK) == A_WORD) |
| 1054 | stab = arg[1].arg_ptr.arg_stab; |
| 1055 | else |
| 1056 | stab = stabent(str_get(st[1]),TRUE); |
| 1057 | str_set(str, do_close(stab,TRUE) ? Yes : No ); |
| 1058 | STABSET(str); |
| 1059 | break; |
| 1060 | case O_EACH: |
| 1061 | sp = do_each(str,stab_hash(arg[1].arg_ptr.arg_stab), |
| 1062 | gimme,arglast); |
| 1063 | goto array_return; |
| 1064 | case O_VALUES: |
| 1065 | case O_KEYS: |
| 1066 | sp = do_kv(str,stab_hash(arg[1].arg_ptr.arg_stab), optype, |
| 1067 | gimme,arglast); |
| 1068 | goto array_return; |
| 1069 | case O_LARRAY: |
| 1070 | str->str_nok = str->str_pok = 0; |
| 1071 | str->str_u.str_stab = arg[1].arg_ptr.arg_stab; |
| 1072 | str->str_state = SS_ARY; |
| 1073 | break; |
| 1074 | case O_ARRAY: |
| 1075 | ary = stab_array(arg[1].arg_ptr.arg_stab); |
| 1076 | maxarg = ary->ary_fill + 1; |
| 1077 | if (gimme == G_ARRAY) { /* array wanted */ |
| 1078 | sp = arglast[0]; |
| 1079 | st -= sp; |
| 1080 | if (maxarg > 0 && sp + maxarg > stack->ary_max) { |
| 1081 | astore(stack,sp + maxarg, Nullstr); |
| 1082 | st = stack->ary_array; |
| 1083 | } |
| 1084 | st += sp; |
| 1085 | Copy(ary->ary_array, &st[1], maxarg, STR*); |
| 1086 | sp += maxarg; |
| 1087 | goto array_return; |
| 1088 | } |
| 1089 | else { |
| 1090 | value = (double)maxarg; |
| 1091 | goto donumset; |
| 1092 | } |
| 1093 | case O_AELEM: |
| 1094 | anum = ((int)str_gnum(st[2])) - arybase; |
| 1095 | str = afetch(stab_array(arg[1].arg_ptr.arg_stab),anum,FALSE); |
| 1096 | break; |
| 1097 | case O_DELETE: |
| 1098 | tmpstab = arg[1].arg_ptr.arg_stab; |
| 1099 | tmps = str_get(st[2]); |
| 1100 | str = hdelete(stab_hash(tmpstab),tmps,st[2]->str_cur); |
| 1101 | if (tmpstab == envstab) |
| 1102 | my_setenv(tmps,Nullch); |
| 1103 | if (!str) |
| 1104 | goto say_undef; |
| 1105 | break; |
| 1106 | case O_LHASH: |
| 1107 | str->str_nok = str->str_pok = 0; |
| 1108 | str->str_u.str_stab = arg[1].arg_ptr.arg_stab; |
| 1109 | str->str_state = SS_HASH; |
| 1110 | break; |
| 1111 | case O_HASH: |
| 1112 | if (gimme == G_ARRAY) { /* array wanted */ |
| 1113 | sp = do_kv(str,stab_hash(arg[1].arg_ptr.arg_stab), optype, |
| 1114 | gimme,arglast); |
| 1115 | goto array_return; |
| 1116 | } |
| 1117 | else { |
| 1118 | tmpstab = arg[1].arg_ptr.arg_stab; |
| 1119 | if (!stab_hash(tmpstab)->tbl_fill) |
| 1120 | goto say_zero; |
| 1121 | sprintf(buf,"%d/%d",stab_hash(tmpstab)->tbl_fill, |
| 1122 | stab_hash(tmpstab)->tbl_max+1); |
| 1123 | str_set(str,buf); |
| 1124 | } |
| 1125 | break; |
| 1126 | case O_HELEM: |
| 1127 | tmpstab = arg[1].arg_ptr.arg_stab; |
| 1128 | tmps = str_get(st[2]); |
| 1129 | str = hfetch(stab_hash(tmpstab),tmps,st[2]->str_cur,FALSE); |
| 1130 | break; |
| 1131 | case O_LAELEM: |
| 1132 | anum = ((int)str_gnum(st[2])) - arybase; |
| 1133 | str = afetch(stab_array(arg[1].arg_ptr.arg_stab),anum,TRUE); |
| 1134 | if (!str || str == &str_undef) |
| 1135 | fatal("Assignment to non-creatable value, subscript %d",anum); |
| 1136 | break; |
| 1137 | case O_LHELEM: |
| 1138 | tmpstab = arg[1].arg_ptr.arg_stab; |
| 1139 | tmps = str_get(st[2]); |
| 1140 | anum = st[2]->str_cur; |
| 1141 | str = hfetch(stab_hash(tmpstab),tmps,anum,TRUE); |
| 1142 | if (!str || str == &str_undef) |
| 1143 | fatal("Assignment to non-creatable value, subscript \"%s\"",tmps); |
| 1144 | if (tmpstab == envstab) /* heavy wizardry going on here */ |
| 1145 | str_magic(str, tmpstab, 'E', tmps, anum); /* str is now magic */ |
| 1146 | /* he threw the brick up into the air */ |
| 1147 | else if (tmpstab == sigstab) |
| 1148 | str_magic(str, tmpstab, 'S', tmps, anum); |
| 1149 | #ifdef SOME_DBM |
| 1150 | else if (stab_hash(tmpstab)->tbl_dbm) |
| 1151 | str_magic(str, tmpstab, 'D', tmps, anum); |
| 1152 | #endif |
| 1153 | else if (tmpstab == DBline) |
| 1154 | str_magic(str, tmpstab, 'L', tmps, anum); |
| 1155 | break; |
| 1156 | case O_LSLICE: |
| 1157 | anum = 2; |
| 1158 | argtype = FALSE; |
| 1159 | goto do_slice_already; |
| 1160 | case O_ASLICE: |
| 1161 | anum = 1; |
| 1162 | argtype = FALSE; |
| 1163 | goto do_slice_already; |
| 1164 | case O_HSLICE: |
| 1165 | anum = 0; |
| 1166 | argtype = FALSE; |
| 1167 | goto do_slice_already; |
| 1168 | case O_LASLICE: |
| 1169 | anum = 1; |
| 1170 | argtype = TRUE; |
| 1171 | goto do_slice_already; |
| 1172 | case O_LHSLICE: |
| 1173 | anum = 0; |
| 1174 | argtype = TRUE; |
| 1175 | do_slice_already: |
| 1176 | sp = do_slice(arg[1].arg_ptr.arg_stab,str,anum,argtype, |
| 1177 | gimme,arglast); |
| 1178 | goto array_return; |
| 1179 | case O_SPLICE: |
| 1180 | sp = do_splice(stab_array(arg[1].arg_ptr.arg_stab),gimme,arglast); |
| 1181 | goto array_return; |
| 1182 | case O_PUSH: |
| 1183 | if (arglast[2] - arglast[1] != 1) |
| 1184 | str = do_push(stab_array(arg[1].arg_ptr.arg_stab),arglast); |
| 1185 | else { |
| 1186 | str = Str_new(51,0); /* must copy the STR */ |
| 1187 | str_sset(str,st[2]); |
| 1188 | (void)apush(stab_array(arg[1].arg_ptr.arg_stab),str); |
| 1189 | } |
| 1190 | break; |
| 1191 | case O_POP: |
| 1192 | str = apop(ary = stab_array(arg[1].arg_ptr.arg_stab)); |
| 1193 | goto staticalization; |
| 1194 | case O_SHIFT: |
| 1195 | str = ashift(ary = stab_array(arg[1].arg_ptr.arg_stab)); |
| 1196 | staticalization: |
| 1197 | if (!str) |
| 1198 | goto say_undef; |
| 1199 | if (ary->ary_flags & ARF_REAL) |
| 1200 | (void)str_2mortal(str); |
| 1201 | break; |
| 1202 | case O_UNPACK: |
| 1203 | sp = do_unpack(str,gimme,arglast); |
| 1204 | goto array_return; |
| 1205 | case O_SPLIT: |
| 1206 | value = str_gnum(st[3]); |
| 1207 | sp = do_split(str, arg[2].arg_ptr.arg_spat, (int)value, |
| 1208 | gimme,arglast); |
| 1209 | goto array_return; |
| 1210 | case O_LENGTH: |
| 1211 | if (maxarg < 1) |
| 1212 | value = (double)str_len(stab_val(defstab)); |
| 1213 | else |
| 1214 | value = (double)str_len(st[1]); |
| 1215 | goto donumset; |
| 1216 | case O_SPRINTF: |
| 1217 | do_sprintf(str, sp-arglast[0], st+1); |
| 1218 | break; |
| 1219 | case O_SUBSTR: |
| 1220 | anum = ((int)str_gnum(st[2])) - arybase; /* anum=where to start*/ |
| 1221 | tmps = str_get(st[1]); /* force conversion to string */ |
| 1222 | /*SUPPRESS 560*/ |
| 1223 | if (argtype = (str == st[1])) |
| 1224 | str = arg->arg_ptr.arg_str; |
| 1225 | if (anum < 0) |
| 1226 | anum += st[1]->str_cur + arybase; |
| 1227 | if (anum < 0 || anum > st[1]->str_cur) |
| 1228 | str_nset(str,"",0); |
| 1229 | else { |
| 1230 | optype = maxarg < 3 ? st[1]->str_cur : (int)str_gnum(st[3]); |
| 1231 | if (optype < 0) |
| 1232 | optype = 0; |
| 1233 | tmps += anum; |
| 1234 | anum = st[1]->str_cur - anum; /* anum=how many bytes left*/ |
| 1235 | if (anum > optype) |
| 1236 | anum = optype; |
| 1237 | str_nset(str, tmps, anum); |
| 1238 | if (argtype) { /* it's an lvalue! */ |
| 1239 | lstr = (struct lstring*)str; |
| 1240 | str->str_magic = st[1]; |
| 1241 | st[1]->str_rare = 's'; |
| 1242 | lstr->lstr_offset = tmps - str_get(st[1]); |
| 1243 | lstr->lstr_len = anum; |
| 1244 | } |
| 1245 | } |
| 1246 | break; |
| 1247 | case O_PACK: |
| 1248 | /*SUPPRESS 701*/ |
| 1249 | (void)do_pack(str,arglast); |
| 1250 | break; |
| 1251 | case O_GREP: |
| 1252 | sp = do_grep(arg,str,gimme,arglast); |
| 1253 | goto array_return; |
| 1254 | case O_JOIN: |
| 1255 | do_join(str,arglast); |
| 1256 | break; |
| 1257 | case O_SLT: |
| 1258 | tmps = str_get(st[1]); |
| 1259 | value = (double) (str_cmp(st[1],st[2]) < 0); |
| 1260 | goto donumset; |
| 1261 | case O_SGT: |
| 1262 | tmps = str_get(st[1]); |
| 1263 | value = (double) (str_cmp(st[1],st[2]) > 0); |
| 1264 | goto donumset; |
| 1265 | case O_SLE: |
| 1266 | tmps = str_get(st[1]); |
| 1267 | value = (double) (str_cmp(st[1],st[2]) <= 0); |
| 1268 | goto donumset; |
| 1269 | case O_SGE: |
| 1270 | tmps = str_get(st[1]); |
| 1271 | value = (double) (str_cmp(st[1],st[2]) >= 0); |
| 1272 | goto donumset; |
| 1273 | case O_SEQ: |
| 1274 | tmps = str_get(st[1]); |
| 1275 | value = (double) str_eq(st[1],st[2]); |
| 1276 | goto donumset; |
| 1277 | case O_SNE: |
| 1278 | tmps = str_get(st[1]); |
| 1279 | value = (double) !str_eq(st[1],st[2]); |
| 1280 | goto donumset; |
| 1281 | case O_SCMP: |
| 1282 | tmps = str_get(st[1]); |
| 1283 | value = (double) str_cmp(st[1],st[2]); |
| 1284 | goto donumset; |
| 1285 | case O_SUBR: |
| 1286 | sp = do_subr(arg,gimme,arglast); |
| 1287 | st = stack->ary_array + arglast[0]; /* maybe realloced */ |
| 1288 | goto array_return; |
| 1289 | case O_DBSUBR: |
| 1290 | sp = do_subr(arg,gimme,arglast); |
| 1291 | st = stack->ary_array + arglast[0]; /* maybe realloced */ |
| 1292 | goto array_return; |
| 1293 | case O_CALLER: |
| 1294 | sp = do_caller(arg,maxarg,gimme,arglast); |
| 1295 | st = stack->ary_array + arglast[0]; /* maybe realloced */ |
| 1296 | goto array_return; |
| 1297 | case O_SORT: |
| 1298 | sp = do_sort(str,arg, |
| 1299 | gimme,arglast); |
| 1300 | goto array_return; |
| 1301 | case O_REVERSE: |
| 1302 | if (gimme == G_ARRAY) |
| 1303 | sp = do_reverse(arglast); |
| 1304 | else |
| 1305 | sp = do_sreverse(str, arglast); |
| 1306 | goto array_return; |
| 1307 | case O_WARN: |
| 1308 | if (arglast[2] - arglast[1] != 1) { |
| 1309 | do_join(str,arglast); |
| 1310 | tmps = str_get(str); |
| 1311 | } |
| 1312 | else { |
| 1313 | str = st[2]; |
| 1314 | tmps = str_get(st[2]); |
| 1315 | } |
| 1316 | if (!tmps || !*tmps) |
| 1317 | tmps = "Warning: something's wrong"; |
| 1318 | warn("%s",tmps); |
| 1319 | goto say_yes; |
| 1320 | case O_DIE: |
| 1321 | if (arglast[2] - arglast[1] != 1) { |
| 1322 | do_join(str,arglast); |
| 1323 | tmps = str_get(str); |
| 1324 | } |
| 1325 | else { |
| 1326 | str = st[2]; |
| 1327 | tmps = str_get(st[2]); |
| 1328 | } |
| 1329 | if (!tmps || !*tmps) |
| 1330 | tmps = "Died"; |
| 1331 | fatal("%s",tmps); |
| 1332 | goto say_zero; |
| 1333 | case O_PRTF: |
| 1334 | case O_PRINT: |
| 1335 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
| 1336 | stab = arg[1].arg_ptr.arg_stab; |
| 1337 | else |
| 1338 | stab = stabent(str_get(st[1]),TRUE); |
| 1339 | if (!stab) |
| 1340 | stab = defoutstab; |
| 1341 | if (!stab_io(stab)) { |
| 1342 | if (dowarn) |
| 1343 | warn("Filehandle never opened"); |
| 1344 | goto say_zero; |
| 1345 | } |
| 1346 | if (!(fp = stab_io(stab)->ofp)) { |
| 1347 | if (dowarn) { |
| 1348 | if (stab_io(stab)->ifp) |
| 1349 | warn("Filehandle opened only for input"); |
| 1350 | else |
| 1351 | warn("Print on closed filehandle"); |
| 1352 | } |
| 1353 | goto say_zero; |
| 1354 | } |
| 1355 | else { |
| 1356 | if (optype == O_PRTF || arglast[2] - arglast[1] != 1) |
| 1357 | value = (double)do_aprint(arg,fp,arglast); |
| 1358 | else { |
| 1359 | value = (double)do_print(st[2],fp); |
| 1360 | if (orslen && optype == O_PRINT) |
| 1361 | if (fwrite(ors, 1, orslen, fp) == 0) |
| 1362 | goto say_zero; |
| 1363 | } |
| 1364 | if (stab_io(stab)->flags & IOF_FLUSH) |
| 1365 | if (fflush(fp) == EOF) |
| 1366 | goto say_zero; |
| 1367 | } |
| 1368 | goto donumset; |
| 1369 | case O_CHDIR: |
| 1370 | if (maxarg < 1) |
| 1371 | tmps = Nullch; |
| 1372 | else |
| 1373 | tmps = str_get(st[1]); |
| 1374 | if (!tmps || !*tmps) { |
| 1375 | tmpstr = hfetch(stab_hash(envstab),"HOME",4,FALSE); |
| 1376 | tmps = str_get(tmpstr); |
| 1377 | } |
| 1378 | if (!tmps || !*tmps) { |
| 1379 | tmpstr = hfetch(stab_hash(envstab),"LOGDIR",6,FALSE); |
| 1380 | tmps = str_get(tmpstr); |
| 1381 | } |
| 1382 | #ifdef TAINT |
| 1383 | taintproper("Insecure dependency in chdir"); |
| 1384 | #endif |
| 1385 | value = (double)(chdir(tmps) >= 0); |
| 1386 | goto donumset; |
| 1387 | case O_EXIT: |
| 1388 | if (maxarg < 1) |
| 1389 | anum = 0; |
| 1390 | else |
| 1391 | anum = (int)str_gnum(st[1]); |
| 1392 | exit(anum); |
| 1393 | goto say_zero; |
| 1394 | case O_RESET: |
| 1395 | if (maxarg < 1) |
| 1396 | tmps = ""; |
| 1397 | else |
| 1398 | tmps = str_get(st[1]); |
| 1399 | str_reset(tmps,curcmd->c_stash); |
| 1400 | value = 1.0; |
| 1401 | goto donumset; |
| 1402 | case O_LIST: |
| 1403 | if (gimme == G_ARRAY) |
| 1404 | goto array_return; |
| 1405 | if (maxarg > 0) |
| 1406 | str = st[sp - arglast[0]]; /* unwanted list, return last item */ |
| 1407 | else |
| 1408 | str = &str_undef; |
| 1409 | break; |
| 1410 | case O_EOF: |
| 1411 | if (maxarg <= 0) |
| 1412 | stab = last_in_stab; |
| 1413 | else if ((arg[1].arg_type & A_MASK) == A_WORD) |
| 1414 | stab = arg[1].arg_ptr.arg_stab; |
| 1415 | else |
| 1416 | stab = stabent(str_get(st[1]),TRUE); |
| 1417 | str_set(str, do_eof(stab) ? Yes : No); |
| 1418 | STABSET(str); |
| 1419 | break; |
| 1420 | case O_GETC: |
| 1421 | if (maxarg <= 0) |
| 1422 | stab = stdinstab; |
| 1423 | else if ((arg[1].arg_type & A_MASK) == A_WORD) |
| 1424 | stab = arg[1].arg_ptr.arg_stab; |
| 1425 | else |
| 1426 | stab = stabent(str_get(st[1]),TRUE); |
| 1427 | if (!stab) |
| 1428 | stab = argvstab; |
| 1429 | if (!stab || do_eof(stab)) /* make sure we have fp with something */ |
| 1430 | goto say_undef; |
| 1431 | else { |
| 1432 | #ifdef TAINT |
| 1433 | tainted = 1; |
| 1434 | #endif |
| 1435 | str_set(str," "); |
| 1436 | *str->str_ptr = getc(stab_io(stab)->ifp); /* should never be EOF */ |
| 1437 | } |
| 1438 | STABSET(str); |
| 1439 | break; |
| 1440 | case O_TELL: |
| 1441 | if (maxarg <= 0) |
| 1442 | stab = last_in_stab; |
| 1443 | else if ((arg[1].arg_type & A_MASK) == A_WORD) |
| 1444 | stab = arg[1].arg_ptr.arg_stab; |
| 1445 | else |
| 1446 | stab = stabent(str_get(st[1]),TRUE); |
| 1447 | #ifndef lint |
| 1448 | value = (double)do_tell(stab); |
| 1449 | #else |
| 1450 | (void)do_tell(stab); |
| 1451 | #endif |
| 1452 | goto donumset; |
| 1453 | case O_RECV: |
| 1454 | case O_READ: |
| 1455 | case O_SYSREAD: |
| 1456 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
| 1457 | stab = arg[1].arg_ptr.arg_stab; |
| 1458 | else |
| 1459 | stab = stabent(str_get(st[1]),TRUE); |
| 1460 | tmps = str_get(st[2]); |
| 1461 | anum = (int)str_gnum(st[3]); |
| 1462 | errno = 0; |
| 1463 | maxarg = sp - arglast[0]; |
| 1464 | if (maxarg > 4) |
| 1465 | warn("Too many args on read"); |
| 1466 | if (maxarg == 4) |
| 1467 | maxarg = (int)str_gnum(st[4]); |
| 1468 | else |
| 1469 | maxarg = 0; |
| 1470 | if (!stab_io(stab) || !stab_io(stab)->ifp) |
| 1471 | goto say_undef; |
| 1472 | #ifdef HAS_SOCKET |
| 1473 | if (optype == O_RECV) { |
| 1474 | argtype = sizeof buf; |
| 1475 | STR_GROW(st[2], anum+1), (tmps = str_get(st[2])); /* sneaky */ |
| 1476 | anum = recvfrom(fileno(stab_io(stab)->ifp), tmps, anum, maxarg, |
| 1477 | buf, &argtype); |
| 1478 | if (anum >= 0) { |
| 1479 | st[2]->str_cur = anum; |
| 1480 | st[2]->str_ptr[anum] = '\0'; |
| 1481 | str_nset(str,buf,argtype); |
| 1482 | } |
| 1483 | else |
| 1484 | str_sset(str,&str_undef); |
| 1485 | break; |
| 1486 | } |
| 1487 | #else |
| 1488 | if (optype == O_RECV) |
| 1489 | goto badsock; |
| 1490 | #endif |
| 1491 | STR_GROW(st[2], anum+maxarg+1), (tmps = str_get(st[2])); /* sneaky */ |
| 1492 | if (optype == O_SYSREAD) { |
| 1493 | anum = read(fileno(stab_io(stab)->ifp), tmps+maxarg, anum); |
| 1494 | } |
| 1495 | else |
| 1496 | #ifdef HAS_SOCKET |
| 1497 | if (stab_io(stab)->type == 's') { |
| 1498 | argtype = sizeof buf; |
| 1499 | anum = recvfrom(fileno(stab_io(stab)->ifp), tmps+maxarg, anum, 0, |
| 1500 | buf, &argtype); |
| 1501 | } |
| 1502 | else |
| 1503 | #endif |
| 1504 | anum = fread(tmps+maxarg, 1, anum, stab_io(stab)->ifp); |
| 1505 | if (anum < 0) |
| 1506 | goto say_undef; |
| 1507 | st[2]->str_cur = anum+maxarg; |
| 1508 | st[2]->str_ptr[anum+maxarg] = '\0'; |
| 1509 | value = (double)anum; |
| 1510 | goto donumset; |
| 1511 | case O_SYSWRITE: |
| 1512 | case O_SEND: |
| 1513 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
| 1514 | stab = arg[1].arg_ptr.arg_stab; |
| 1515 | else |
| 1516 | stab = stabent(str_get(st[1]),TRUE); |
| 1517 | tmps = str_get(st[2]); |
| 1518 | anum = (int)str_gnum(st[3]); |
| 1519 | errno = 0; |
| 1520 | stio = stab_io(stab); |
| 1521 | maxarg = sp - arglast[0]; |
| 1522 | if (!stio || !stio->ifp) { |
| 1523 | anum = -1; |
| 1524 | if (dowarn) { |
| 1525 | if (optype == O_SYSWRITE) |
| 1526 | warn("Syswrite on closed filehandle"); |
| 1527 | else |
| 1528 | warn("Send on closed socket"); |
| 1529 | } |
| 1530 | } |
| 1531 | else if (optype == O_SYSWRITE) { |
| 1532 | if (maxarg > 4) |
| 1533 | warn("Too many args on syswrite"); |
| 1534 | if (maxarg == 4) |
| 1535 | optype = (int)str_gnum(st[4]); |
| 1536 | else |
| 1537 | optype = 0; |
| 1538 | anum = write(fileno(stab_io(stab)->ifp), tmps+optype, anum); |
| 1539 | } |
| 1540 | #ifdef HAS_SOCKET |
| 1541 | else if (maxarg >= 4) { |
| 1542 | if (maxarg > 4) |
| 1543 | warn("Too many args on send"); |
| 1544 | tmps2 = str_get(st[4]); |
| 1545 | anum = sendto(fileno(stab_io(stab)->ifp), tmps, st[2]->str_cur, |
| 1546 | anum, tmps2, st[4]->str_cur); |
| 1547 | } |
| 1548 | else |
| 1549 | anum = send(fileno(stab_io(stab)->ifp), tmps, st[2]->str_cur, anum); |
| 1550 | #else |
| 1551 | else |
| 1552 | goto badsock; |
| 1553 | #endif |
| 1554 | if (anum < 0) |
| 1555 | goto say_undef; |
| 1556 | value = (double)anum; |
| 1557 | goto donumset; |
| 1558 | case O_SEEK: |
| 1559 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
| 1560 | stab = arg[1].arg_ptr.arg_stab; |
| 1561 | else |
| 1562 | stab = stabent(str_get(st[1]),TRUE); |
| 1563 | value = str_gnum(st[2]); |
| 1564 | str_set(str, do_seek(stab, |
| 1565 | (long)value, (int)str_gnum(st[3]) ) ? Yes : No); |
| 1566 | STABSET(str); |
| 1567 | break; |
| 1568 | case O_RETURN: |
| 1569 | tmps = "_SUB_"; /* just fake up a "last _SUB_" */ |
| 1570 | optype = O_LAST; |
| 1571 | if (curcsv && curcsv->wantarray == G_ARRAY) { |
| 1572 | lastretstr = Nullstr; |
| 1573 | lastspbase = arglast[1]; |
| 1574 | lastsize = arglast[2] - arglast[1]; |
| 1575 | } |
| 1576 | else |
| 1577 | lastretstr = str_mortal(st[arglast[2] - arglast[0]]); |
| 1578 | goto dopop; |
| 1579 | case O_REDO: |
| 1580 | case O_NEXT: |
| 1581 | case O_LAST: |
| 1582 | tmps = Nullch; |
| 1583 | if (maxarg > 0) { |
| 1584 | tmps = str_get(arg[1].arg_ptr.arg_str); |
| 1585 | dopop: |
| 1586 | while (loop_ptr >= 0 && (!loop_stack[loop_ptr].loop_label || |
| 1587 | strNE(tmps,loop_stack[loop_ptr].loop_label) )) { |
| 1588 | #ifdef DEBUGGING |
| 1589 | if (debug & 4) { |
| 1590 | deb("(Skipping label #%d %s)\n",loop_ptr, |
| 1591 | loop_stack[loop_ptr].loop_label); |
| 1592 | } |
| 1593 | #endif |
| 1594 | loop_ptr--; |
| 1595 | } |
| 1596 | #ifdef DEBUGGING |
| 1597 | if (debug & 4) { |
| 1598 | deb("(Found label #%d %s)\n",loop_ptr, |
| 1599 | loop_stack[loop_ptr].loop_label); |
| 1600 | } |
| 1601 | #endif |
| 1602 | } |
| 1603 | if (loop_ptr < 0) { |
| 1604 | if (tmps && strEQ(tmps, "_SUB_")) |
| 1605 | fatal("Can't return outside a subroutine"); |
| 1606 | fatal("Bad label: %s", maxarg > 0 ? tmps : "<null>"); |
| 1607 | } |
| 1608 | if (!lastretstr && optype == O_LAST && lastsize) { |
| 1609 | st -= arglast[0]; |
| 1610 | st += lastspbase + 1; |
| 1611 | optype = loop_stack[loop_ptr].loop_sp - lastspbase; /* negative */ |
| 1612 | if (optype) { |
| 1613 | for (anum = lastsize; anum > 0; anum--,st++) |
| 1614 | st[optype] = str_mortal(st[0]); |
| 1615 | } |
| 1616 | longjmp(loop_stack[loop_ptr].loop_env, O_LAST); |
| 1617 | } |
| 1618 | longjmp(loop_stack[loop_ptr].loop_env, optype); |
| 1619 | case O_DUMP: |
| 1620 | case O_GOTO:/* shudder */ |
| 1621 | goto_targ = str_get(arg[1].arg_ptr.arg_str); |
| 1622 | if (!*goto_targ) |
| 1623 | goto_targ = Nullch; /* just restart from top */ |
| 1624 | if (optype == O_DUMP) { |
| 1625 | do_undump = 1; |
| 1626 | my_unexec(); |
| 1627 | } |
| 1628 | longjmp(top_env, 1); |
| 1629 | case O_INDEX: |
| 1630 | tmps = str_get(st[1]); |
| 1631 | if (maxarg < 3) |
| 1632 | anum = 0; |
| 1633 | else { |
| 1634 | anum = (int) str_gnum(st[3]) - arybase; |
| 1635 | if (anum < 0) |
| 1636 | anum = 0; |
| 1637 | else if (anum > st[1]->str_cur) |
| 1638 | anum = st[1]->str_cur; |
| 1639 | } |
| 1640 | #ifndef lint |
| 1641 | if (!(tmps2 = fbminstr((unsigned char*)tmps + anum, |
| 1642 | (unsigned char*)tmps + st[1]->str_cur, st[2]))) |
| 1643 | #else |
| 1644 | if (tmps2 = fbminstr(Null(unsigned char*),Null(unsigned char*),Nullstr)) |
| 1645 | #endif |
| 1646 | value = (double)(-1 + arybase); |
| 1647 | else |
| 1648 | value = (double)(tmps2 - tmps + arybase); |
| 1649 | goto donumset; |
| 1650 | case O_RINDEX: |
| 1651 | tmps = str_get(st[1]); |
| 1652 | tmps2 = str_get(st[2]); |
| 1653 | if (maxarg < 3) |
| 1654 | anum = st[1]->str_cur; |
| 1655 | else { |
| 1656 | anum = (int) str_gnum(st[3]) - arybase + st[2]->str_cur; |
| 1657 | if (anum < 0) |
| 1658 | anum = 0; |
| 1659 | else if (anum > st[1]->str_cur) |
| 1660 | anum = st[1]->str_cur; |
| 1661 | } |
| 1662 | #ifndef lint |
| 1663 | if (!(tmps2 = rninstr(tmps, tmps + anum, |
| 1664 | tmps2, tmps2 + st[2]->str_cur))) |
| 1665 | #else |
| 1666 | if (tmps2 = rninstr(Nullch,Nullch,Nullch,Nullch)) |
| 1667 | #endif |
| 1668 | value = (double)(-1 + arybase); |
| 1669 | else |
| 1670 | value = (double)(tmps2 - tmps + arybase); |
| 1671 | goto donumset; |
| 1672 | case O_TIME: |
| 1673 | #ifndef lint |
| 1674 | value = (double) time(Null(long*)); |
| 1675 | #endif |
| 1676 | goto donumset; |
| 1677 | case O_TMS: |
| 1678 | sp = do_tms(str,gimme,arglast); |
| 1679 | goto array_return; |
| 1680 | case O_LOCALTIME: |
| 1681 | if (maxarg < 1) |
| 1682 | (void)time(&when); |
| 1683 | else |
| 1684 | when = (time_t)str_gnum(st[1]); |
| 1685 | sp = do_time(str,localtime(&when), |
| 1686 | gimme,arglast); |
| 1687 | goto array_return; |
| 1688 | case O_GMTIME: |
| 1689 | if (maxarg < 1) |
| 1690 | (void)time(&when); |
| 1691 | else |
| 1692 | when = (time_t)str_gnum(st[1]); |
| 1693 | sp = do_time(str,gmtime(&when), |
| 1694 | gimme,arglast); |
| 1695 | goto array_return; |
| 1696 | case O_TRUNCATE: |
| 1697 | sp = do_truncate(str,arg, |
| 1698 | gimme,arglast); |
| 1699 | goto array_return; |
| 1700 | case O_LSTAT: |
| 1701 | case O_STAT: |
| 1702 | sp = do_stat(str,arg, |
| 1703 | gimme,arglast); |
| 1704 | goto array_return; |
| 1705 | case O_CRYPT: |
| 1706 | #ifdef HAS_CRYPT |
| 1707 | tmps = str_get(st[1]); |
| 1708 | #ifdef FCRYPT |
| 1709 | str_set(str,fcrypt(tmps,str_get(st[2]))); |
| 1710 | #else |
| 1711 | str_set(str,crypt(tmps,str_get(st[2]))); |
| 1712 | #endif |
| 1713 | #else |
| 1714 | fatal( |
| 1715 | "The crypt() function is unimplemented due to excessive paranoia."); |
| 1716 | #endif |
| 1717 | break; |
| 1718 | case O_ATAN2: |
| 1719 | value = str_gnum(st[1]); |
| 1720 | value = atan2(value,str_gnum(st[2])); |
| 1721 | goto donumset; |
| 1722 | case O_SIN: |
| 1723 | if (maxarg < 1) |
| 1724 | value = str_gnum(stab_val(defstab)); |
| 1725 | else |
| 1726 | value = str_gnum(st[1]); |
| 1727 | value = sin(value); |
| 1728 | goto donumset; |
| 1729 | case O_COS: |
| 1730 | if (maxarg < 1) |
| 1731 | value = str_gnum(stab_val(defstab)); |
| 1732 | else |
| 1733 | value = str_gnum(st[1]); |
| 1734 | value = cos(value); |
| 1735 | goto donumset; |
| 1736 | case O_RAND: |
| 1737 | if (maxarg < 1) |
| 1738 | value = 1.0; |
| 1739 | else |
| 1740 | value = str_gnum(st[1]); |
| 1741 | if (value == 0.0) |
| 1742 | value = 1.0; |
| 1743 | #if RANDBITS == 31 |
| 1744 | value = rand() * value / 2147483648.0; |
| 1745 | #else |
| 1746 | #if RANDBITS == 16 |
| 1747 | value = rand() * value / 65536.0; |
| 1748 | #else |
| 1749 | #if RANDBITS == 15 |
| 1750 | value = rand() * value / 32768.0; |
| 1751 | #else |
| 1752 | value = rand() * value / (double)(((unsigned long)1) << RANDBITS); |
| 1753 | #endif |
| 1754 | #endif |
| 1755 | #endif |
| 1756 | goto donumset; |
| 1757 | case O_SRAND: |
| 1758 | if (maxarg < 1) { |
| 1759 | (void)time(&when); |
| 1760 | anum = when; |
| 1761 | } |
| 1762 | else |
| 1763 | anum = (int)str_gnum(st[1]); |
| 1764 | (void)srand(anum); |
| 1765 | goto say_yes; |
| 1766 | case O_EXP: |
| 1767 | if (maxarg < 1) |
| 1768 | value = str_gnum(stab_val(defstab)); |
| 1769 | else |
| 1770 | value = str_gnum(st[1]); |
| 1771 | value = exp(value); |
| 1772 | goto donumset; |
| 1773 | case O_LOG: |
| 1774 | if (maxarg < 1) |
| 1775 | value = str_gnum(stab_val(defstab)); |
| 1776 | else |
| 1777 | value = str_gnum(st[1]); |
| 1778 | if (value <= 0.0) |
| 1779 | fatal("Can't take log of %g\n", value); |
| 1780 | value = log(value); |
| 1781 | goto donumset; |
| 1782 | case O_SQRT: |
| 1783 | if (maxarg < 1) |
| 1784 | value = str_gnum(stab_val(defstab)); |
| 1785 | else |
| 1786 | value = str_gnum(st[1]); |
| 1787 | if (value < 0.0) |
| 1788 | fatal("Can't take sqrt of %g\n", value); |
| 1789 | value = sqrt(value); |
| 1790 | goto donumset; |
| 1791 | case O_INT: |
| 1792 | if (maxarg < 1) |
| 1793 | value = str_gnum(stab_val(defstab)); |
| 1794 | else |
| 1795 | value = str_gnum(st[1]); |
| 1796 | if (value >= 0.0) |
| 1797 | (void)modf(value,&value); |
| 1798 | else { |
| 1799 | (void)modf(-value,&value); |
| 1800 | value = -value; |
| 1801 | } |
| 1802 | goto donumset; |
| 1803 | case O_ORD: |
| 1804 | if (maxarg < 1) |
| 1805 | tmps = str_get(stab_val(defstab)); |
| 1806 | else |
| 1807 | tmps = str_get(st[1]); |
| 1808 | #ifndef I286 |
| 1809 | value = (double) (*tmps & 255); |
| 1810 | #else |
| 1811 | anum = (int) *tmps; |
| 1812 | value = (double) (anum & 255); |
| 1813 | #endif |
| 1814 | goto donumset; |
| 1815 | case O_ALARM: |
| 1816 | #ifdef HAS_ALARM |
| 1817 | if (maxarg < 1) |
| 1818 | tmps = str_get(stab_val(defstab)); |
| 1819 | else |
| 1820 | tmps = str_get(st[1]); |
| 1821 | if (!tmps) |
| 1822 | tmps = "0"; |
| 1823 | anum = alarm((unsigned int)atoi(tmps)); |
| 1824 | if (anum < 0) |
| 1825 | goto say_undef; |
| 1826 | value = (double)anum; |
| 1827 | goto donumset; |
| 1828 | #else |
| 1829 | fatal("Unsupported function alarm"); |
| 1830 | break; |
| 1831 | #endif |
| 1832 | case O_SLEEP: |
| 1833 | if (maxarg < 1) |
| 1834 | tmps = Nullch; |
| 1835 | else |
| 1836 | tmps = str_get(st[1]); |
| 1837 | (void)time(&when); |
| 1838 | if (!tmps || !*tmps) |
| 1839 | sleep((32767<<16)+32767); |
| 1840 | else |
| 1841 | sleep((unsigned int)atoi(tmps)); |
| 1842 | #ifndef lint |
| 1843 | value = (double)when; |
| 1844 | (void)time(&when); |
| 1845 | value = ((double)when) - value; |
| 1846 | #endif |
| 1847 | goto donumset; |
| 1848 | case O_RANGE: |
| 1849 | sp = do_range(gimme,arglast); |
| 1850 | goto array_return; |
| 1851 | case O_F_OR_R: |
| 1852 | if (gimme == G_ARRAY) { /* it's a range */ |
| 1853 | /* can we optimize to constant array? */ |
| 1854 | if ((arg[1].arg_type & A_MASK) == A_SINGLE && |
| 1855 | (arg[2].arg_type & A_MASK) == A_SINGLE) { |
| 1856 | st[2] = arg[2].arg_ptr.arg_str; |
| 1857 | sp = do_range(gimme,arglast); |
| 1858 | st = stack->ary_array; |
| 1859 | maxarg = sp - arglast[0]; |
| 1860 | str_free(arg[1].arg_ptr.arg_str); |
| 1861 | arg[1].arg_ptr.arg_str = Nullstr; |
| 1862 | str_free(arg[2].arg_ptr.arg_str); |
| 1863 | arg[2].arg_ptr.arg_str = Nullstr; |
| 1864 | arg->arg_type = O_ARRAY; |
| 1865 | arg[1].arg_type = A_STAB|A_DONT; |
| 1866 | arg->arg_len = 1; |
| 1867 | stab = arg[1].arg_ptr.arg_stab = aadd(genstab()); |
| 1868 | ary = stab_array(stab); |
| 1869 | afill(ary,maxarg - 1); |
| 1870 | anum = maxarg; |
| 1871 | st += arglast[0]+1; |
| 1872 | while (maxarg-- > 0) |
| 1873 | ary->ary_array[maxarg] = str_smake(st[maxarg]); |
| 1874 | st -= arglast[0]+1; |
| 1875 | goto array_return; |
| 1876 | } |
| 1877 | arg->arg_type = optype = O_RANGE; |
| 1878 | maxarg = arg->arg_len = 2; |
| 1879 | anum = 2; |
| 1880 | arg[anum].arg_flags &= ~AF_ARYOK; |
| 1881 | argflags = arg[anum].arg_flags; |
| 1882 | argtype = arg[anum].arg_type & A_MASK; |
| 1883 | arg[anum].arg_type = argtype; |
| 1884 | argptr = arg[anum].arg_ptr; |
| 1885 | sp = arglast[0]; |
| 1886 | st -= sp; |
| 1887 | sp++; |
| 1888 | goto re_eval; |
| 1889 | } |
| 1890 | arg->arg_type = O_FLIP; |
| 1891 | /* FALL THROUGH */ |
| 1892 | case O_FLIP: |
| 1893 | if ((arg[1].arg_type & A_MASK) == A_SINGLE ? |
| 1894 | last_in_stab && (int)str_gnum(st[1]) == stab_io(last_in_stab)->lines |
| 1895 | : |
| 1896 | str_true(st[1]) ) { |
| 1897 | arg[2].arg_type &= ~A_DONT; |
| 1898 | arg[1].arg_type |= A_DONT; |
| 1899 | arg->arg_type = optype = O_FLOP; |
| 1900 | if (arg->arg_flags & AF_COMMON) { |
| 1901 | str_numset(str,0.0); |
| 1902 | anum = 2; |
| 1903 | argflags = arg[2].arg_flags; |
| 1904 | argtype = arg[2].arg_type & A_MASK; |
| 1905 | argptr = arg[2].arg_ptr; |
| 1906 | sp = arglast[0]; |
| 1907 | st -= sp++; |
| 1908 | goto re_eval; |
| 1909 | } |
| 1910 | else { |
| 1911 | str_numset(str,1.0); |
| 1912 | break; |
| 1913 | } |
| 1914 | } |
| 1915 | str_set(str,""); |
| 1916 | break; |
| 1917 | case O_FLOP: |
| 1918 | str_inc(str); |
| 1919 | if ((arg[2].arg_type & A_MASK) == A_SINGLE ? |
| 1920 | last_in_stab && (int)str_gnum(st[2]) == stab_io(last_in_stab)->lines |
| 1921 | : |
| 1922 | str_true(st[2]) ) { |
| 1923 | arg->arg_type = O_FLIP; |
| 1924 | arg[1].arg_type &= ~A_DONT; |
| 1925 | arg[2].arg_type |= A_DONT; |
| 1926 | str_cat(str,"E0"); |
| 1927 | } |
| 1928 | break; |
| 1929 | case O_FORK: |
| 1930 | #ifdef HAS_FORK |
| 1931 | anum = fork(); |
| 1932 | if (anum < 0) |
| 1933 | goto say_undef; |
| 1934 | if (!anum) { |
| 1935 | /*SUPPRESS 560*/ |
| 1936 | if (tmpstab = stabent("$",allstabs)) |
| 1937 | str_numset(STAB_STR(tmpstab),(double)getpid()); |
| 1938 | hclear(pidstatus, FALSE); /* no kids, so don't wait for 'em */ |
| 1939 | } |
| 1940 | value = (double)anum; |
| 1941 | goto donumset; |
| 1942 | #else |
| 1943 | fatal("Unsupported function fork"); |
| 1944 | break; |
| 1945 | #endif |
| 1946 | case O_WAIT: |
| 1947 | #ifdef HAS_WAIT |
| 1948 | #ifndef lint |
| 1949 | anum = wait(&argflags); |
| 1950 | if (anum > 0) |
| 1951 | pidgone(anum,argflags); |
| 1952 | value = (double)anum; |
| 1953 | #endif |
| 1954 | statusvalue = (unsigned short)argflags; |
| 1955 | goto donumset; |
| 1956 | #else |
| 1957 | fatal("Unsupported function wait"); |
| 1958 | break; |
| 1959 | #endif |
| 1960 | case O_WAITPID: |
| 1961 | #ifdef HAS_WAIT |
| 1962 | #ifndef lint |
| 1963 | anum = (int)str_gnum(st[1]); |
| 1964 | optype = (int)str_gnum(st[2]); |
| 1965 | anum = wait4pid(anum, &argflags,optype); |
| 1966 | value = (double)anum; |
| 1967 | #endif |
| 1968 | statusvalue = (unsigned short)argflags; |
| 1969 | goto donumset; |
| 1970 | #else |
| 1971 | fatal("Unsupported function wait"); |
| 1972 | break; |
| 1973 | #endif |
| 1974 | case O_SYSTEM: |
| 1975 | #ifdef HAS_FORK |
| 1976 | #ifdef TAINT |
| 1977 | if (arglast[2] - arglast[1] == 1) { |
| 1978 | taintenv(); |
| 1979 | tainted |= st[2]->str_tainted; |
| 1980 | taintproper("Insecure dependency in system"); |
| 1981 | } |
| 1982 | #endif |
| 1983 | while ((anum = vfork()) == -1) { |
| 1984 | if (errno != EAGAIN) { |
| 1985 | value = -1.0; |
| 1986 | goto donumset; |
| 1987 | } |
| 1988 | sleep(5); |
| 1989 | } |
| 1990 | if (anum > 0) { |
| 1991 | #ifndef lint |
| 1992 | ihand = signal(SIGINT, SIG_IGN); |
| 1993 | qhand = signal(SIGQUIT, SIG_IGN); |
| 1994 | argtype = wait4pid(anum, &argflags, 0); |
| 1995 | #else |
| 1996 | ihand = qhand = 0; |
| 1997 | #endif |
| 1998 | (void)signal(SIGINT, ihand); |
| 1999 | (void)signal(SIGQUIT, qhand); |
| 2000 | statusvalue = (unsigned short)argflags; |
| 2001 | if (argtype < 0) |
| 2002 | value = -1.0; |
| 2003 | else { |
| 2004 | value = (double)((unsigned int)argflags & 0xffff); |
| 2005 | } |
| 2006 | do_execfree(); /* free any memory child malloced on vfork */ |
| 2007 | goto donumset; |
| 2008 | } |
| 2009 | if ((arg[1].arg_type & A_MASK) == A_STAB) |
| 2010 | value = (double)do_aexec(st[1],arglast); |
| 2011 | else if (arglast[2] - arglast[1] != 1) |
| 2012 | value = (double)do_aexec(Nullstr,arglast); |
| 2013 | else { |
| 2014 | value = (double)do_exec(str_get(str_mortal(st[2]))); |
| 2015 | } |
| 2016 | _exit(-1); |
| 2017 | #else /* ! FORK */ |
| 2018 | if ((arg[1].arg_type & A_MASK) == A_STAB) |
| 2019 | value = (double)do_aspawn(st[1],arglast); |
| 2020 | else if (arglast[2] - arglast[1] != 1) |
| 2021 | value = (double)do_aspawn(Nullstr,arglast); |
| 2022 | else { |
| 2023 | value = (double)do_spawn(str_get(str_mortal(st[2]))); |
| 2024 | } |
| 2025 | goto donumset; |
| 2026 | #endif /* FORK */ |
| 2027 | case O_EXEC_OP: |
| 2028 | if ((arg[1].arg_type & A_MASK) == A_STAB) |
| 2029 | value = (double)do_aexec(st[1],arglast); |
| 2030 | else if (arglast[2] - arglast[1] != 1) |
| 2031 | value = (double)do_aexec(Nullstr,arglast); |
| 2032 | else { |
| 2033 | #ifdef TAINT |
| 2034 | taintenv(); |
| 2035 | tainted |= st[2]->str_tainted; |
| 2036 | taintproper("Insecure dependency in exec"); |
| 2037 | #endif |
| 2038 | value = (double)do_exec(str_get(str_mortal(st[2]))); |
| 2039 | } |
| 2040 | goto donumset; |
| 2041 | case O_HEX: |
| 2042 | if (maxarg < 1) |
| 2043 | tmps = str_get(stab_val(defstab)); |
| 2044 | else |
| 2045 | tmps = str_get(st[1]); |
| 2046 | value = (double)scanhex(tmps, 99, &argtype); |
| 2047 | goto donumset; |
| 2048 | |
| 2049 | case O_OCT: |
| 2050 | if (maxarg < 1) |
| 2051 | tmps = str_get(stab_val(defstab)); |
| 2052 | else |
| 2053 | tmps = str_get(st[1]); |
| 2054 | while (*tmps && (isSPACE(*tmps) || *tmps == '0')) |
| 2055 | tmps++; |
| 2056 | if (*tmps == 'x') |
| 2057 | value = (double)scanhex(++tmps, 99, &argtype); |
| 2058 | else |
| 2059 | value = (double)scanoct(tmps, 99, &argtype); |
| 2060 | goto donumset; |
| 2061 | |
| 2062 | /* These common exits are hidden here in the middle of the switches for the |
| 2063 | benefit of those machines with limited branch addressing. Sigh. */ |
| 2064 | |
| 2065 | array_return: |
| 2066 | #ifdef DEBUGGING |
| 2067 | if (debug) { |
| 2068 | dlevel--; |
| 2069 | if (debug & 8) { |
| 2070 | anum = sp - arglast[0]; |
| 2071 | switch (anum) { |
| 2072 | case 0: |
| 2073 | deb("%s RETURNS ()\n",opname[optype]); |
| 2074 | break; |
| 2075 | case 1: |
| 2076 | deb("%s RETURNS (\"%s\")\n",opname[optype], |
| 2077 | st[1] ? str_get(st[1]) : ""); |
| 2078 | break; |
| 2079 | default: |
| 2080 | tmps = st[1] ? str_get(st[1]) : ""; |
| 2081 | deb("%s RETURNS %d ARGS (\"%s\",%s\"%s\")\n",opname[optype], |
| 2082 | anum,tmps,anum==2?"":"...,", |
| 2083 | st[anum] ? str_get(st[anum]) : ""); |
| 2084 | break; |
| 2085 | } |
| 2086 | } |
| 2087 | } |
| 2088 | #endif |
| 2089 | return sp; |
| 2090 | |
| 2091 | say_yes: |
| 2092 | str = &str_yes; |
| 2093 | goto normal_return; |
| 2094 | |
| 2095 | say_no: |
| 2096 | str = &str_no; |
| 2097 | goto normal_return; |
| 2098 | |
| 2099 | say_undef: |
| 2100 | str = &str_undef; |
| 2101 | goto normal_return; |
| 2102 | |
| 2103 | say_zero: |
| 2104 | value = 0.0; |
| 2105 | /* FALL THROUGH */ |
| 2106 | |
| 2107 | donumset: |
| 2108 | str_numset(str,value); |
| 2109 | STABSET(str); |
| 2110 | st[1] = str; |
| 2111 | #ifdef DEBUGGING |
| 2112 | if (debug) { |
| 2113 | dlevel--; |
| 2114 | if (debug & 8) |
| 2115 | deb("%s RETURNS \"%f\"\n",opname[optype],value); |
| 2116 | } |
| 2117 | #endif |
| 2118 | return arglast[0] + 1; |
| 2119 | #ifdef SMALLSWITCHES |
| 2120 | } |
| 2121 | else |
| 2122 | switch (optype) { |
| 2123 | #endif |
| 2124 | case O_CHOWN: |
| 2125 | #ifdef HAS_CHOWN |
| 2126 | value = (double)apply(optype,arglast); |
| 2127 | goto donumset; |
| 2128 | #else |
| 2129 | fatal("Unsupported function chown"); |
| 2130 | break; |
| 2131 | #endif |
| 2132 | case O_KILL: |
| 2133 | #ifdef HAS_KILL |
| 2134 | value = (double)apply(optype,arglast); |
| 2135 | goto donumset; |
| 2136 | #else |
| 2137 | fatal("Unsupported function kill"); |
| 2138 | break; |
| 2139 | #endif |
| 2140 | case O_UNLINK: |
| 2141 | case O_CHMOD: |
| 2142 | case O_UTIME: |
| 2143 | value = (double)apply(optype,arglast); |
| 2144 | goto donumset; |
| 2145 | case O_UMASK: |
| 2146 | #ifdef HAS_UMASK |
| 2147 | if (maxarg < 1) { |
| 2148 | anum = umask(0); |
| 2149 | (void)umask(anum); |
| 2150 | } |
| 2151 | else |
| 2152 | anum = umask((int)str_gnum(st[1])); |
| 2153 | value = (double)anum; |
| 2154 | #ifdef TAINT |
| 2155 | taintproper("Insecure dependency in umask"); |
| 2156 | #endif |
| 2157 | goto donumset; |
| 2158 | #else |
| 2159 | fatal("Unsupported function umask"); |
| 2160 | break; |
| 2161 | #endif |
| 2162 | #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM) |
| 2163 | case O_MSGGET: |
| 2164 | case O_SHMGET: |
| 2165 | case O_SEMGET: |
| 2166 | if ((anum = do_ipcget(optype, arglast)) == -1) |
| 2167 | goto say_undef; |
| 2168 | value = (double)anum; |
| 2169 | goto donumset; |
| 2170 | case O_MSGCTL: |
| 2171 | case O_SHMCTL: |
| 2172 | case O_SEMCTL: |
| 2173 | anum = do_ipcctl(optype, arglast); |
| 2174 | if (anum == -1) |
| 2175 | goto say_undef; |
| 2176 | if (anum != 0) { |
| 2177 | value = (double)anum; |
| 2178 | goto donumset; |
| 2179 | } |
| 2180 | str_set(str,"0 but true"); |
| 2181 | STABSET(str); |
| 2182 | break; |
| 2183 | case O_MSGSND: |
| 2184 | value = (double)(do_msgsnd(arglast) >= 0); |
| 2185 | goto donumset; |
| 2186 | case O_MSGRCV: |
| 2187 | value = (double)(do_msgrcv(arglast) >= 0); |
| 2188 | goto donumset; |
| 2189 | case O_SEMOP: |
| 2190 | value = (double)(do_semop(arglast) >= 0); |
| 2191 | goto donumset; |
| 2192 | case O_SHMREAD: |
| 2193 | case O_SHMWRITE: |
| 2194 | value = (double)(do_shmio(optype, arglast) >= 0); |
| 2195 | goto donumset; |
| 2196 | #else /* not SYSVIPC */ |
| 2197 | case O_MSGGET: |
| 2198 | case O_MSGCTL: |
| 2199 | case O_MSGSND: |
| 2200 | case O_MSGRCV: |
| 2201 | case O_SEMGET: |
| 2202 | case O_SEMCTL: |
| 2203 | case O_SEMOP: |
| 2204 | case O_SHMGET: |
| 2205 | case O_SHMCTL: |
| 2206 | case O_SHMREAD: |
| 2207 | case O_SHMWRITE: |
| 2208 | fatal("System V IPC is not implemented on this machine"); |
| 2209 | #endif /* not SYSVIPC */ |
| 2210 | case O_RENAME: |
| 2211 | tmps = str_get(st[1]); |
| 2212 | tmps2 = str_get(st[2]); |
| 2213 | #ifdef TAINT |
| 2214 | taintproper("Insecure dependency in rename"); |
| 2215 | #endif |
| 2216 | #ifdef HAS_RENAME |
| 2217 | value = (double)(rename(tmps,tmps2) >= 0); |
| 2218 | #else |
| 2219 | if (same_dirent(tmps2, tmps)) /* can always rename to same name */ |
| 2220 | anum = 1; |
| 2221 | else { |
| 2222 | if (euid || stat(tmps2,&statbuf) < 0 || !S_ISDIR(statbuf.st_mode)) |
| 2223 | (void)UNLINK(tmps2); |
| 2224 | if (!(anum = link(tmps,tmps2))) |
| 2225 | anum = UNLINK(tmps); |
| 2226 | } |
| 2227 | value = (double)(anum >= 0); |
| 2228 | #endif |
| 2229 | goto donumset; |
| 2230 | case O_LINK: |
| 2231 | #ifdef HAS_LINK |
| 2232 | tmps = str_get(st[1]); |
| 2233 | tmps2 = str_get(st[2]); |
| 2234 | #ifdef TAINT |
| 2235 | taintproper("Insecure dependency in link"); |
| 2236 | #endif |
| 2237 | value = (double)(link(tmps,tmps2) >= 0); |
| 2238 | goto donumset; |
| 2239 | #else |
| 2240 | fatal("Unsupported function link"); |
| 2241 | break; |
| 2242 | #endif |
| 2243 | case O_MKDIR: |
| 2244 | tmps = str_get(st[1]); |
| 2245 | anum = (int)str_gnum(st[2]); |
| 2246 | #ifdef TAINT |
| 2247 | taintproper("Insecure dependency in mkdir"); |
| 2248 | #endif |
| 2249 | #ifdef HAS_MKDIR |
| 2250 | value = (double)(mkdir(tmps,anum) >= 0); |
| 2251 | goto donumset; |
| 2252 | #else |
| 2253 | (void)strcpy(buf,"mkdir "); |
| 2254 | #endif |
| 2255 | #if !defined(HAS_MKDIR) || !defined(HAS_RMDIR) |
| 2256 | one_liner: |
| 2257 | for (tmps2 = buf+6; *tmps; ) { |
| 2258 | *tmps2++ = '\\'; |
| 2259 | *tmps2++ = *tmps++; |
| 2260 | } |
| 2261 | (void)strcpy(tmps2," 2>&1"); |
| 2262 | rsfp = mypopen(buf,"r"); |
| 2263 | if (rsfp) { |
| 2264 | *buf = '\0'; |
| 2265 | tmps2 = fgets(buf,sizeof buf,rsfp); |
| 2266 | (void)mypclose(rsfp); |
| 2267 | if (tmps2 != Nullch) { |
| 2268 | for (errno = 1; errno < sys_nerr; errno++) { |
| 2269 | if (instr(buf,sys_errlist[errno])) /* you don't see this */ |
| 2270 | goto say_zero; |
| 2271 | } |
| 2272 | errno = 0; |
| 2273 | #ifndef EACCES |
| 2274 | #define EACCES EPERM |
| 2275 | #endif |
| 2276 | if (instr(buf,"cannot make")) |
| 2277 | errno = EEXIST; |
| 2278 | else if (instr(buf,"existing file")) |
| 2279 | errno = EEXIST; |
| 2280 | else if (instr(buf,"ile exists")) |
| 2281 | errno = EEXIST; |
| 2282 | else if (instr(buf,"non-exist")) |
| 2283 | errno = ENOENT; |
| 2284 | else if (instr(buf,"does not exist")) |
| 2285 | errno = ENOENT; |
| 2286 | else if (instr(buf,"not empty")) |
| 2287 | errno = EBUSY; |
| 2288 | else if (instr(buf,"cannot access")) |
| 2289 | errno = EACCES; |
| 2290 | else |
| 2291 | errno = EPERM; |
| 2292 | goto say_zero; |
| 2293 | } |
| 2294 | else { /* some mkdirs return no failure indication */ |
| 2295 | tmps = str_get(st[1]); |
| 2296 | anum = (stat(tmps,&statbuf) >= 0); |
| 2297 | if (optype == O_RMDIR) |
| 2298 | anum = !anum; |
| 2299 | if (anum) |
| 2300 | errno = 0; |
| 2301 | else |
| 2302 | errno = EACCES; /* a guess */ |
| 2303 | value = (double)anum; |
| 2304 | } |
| 2305 | goto donumset; |
| 2306 | } |
| 2307 | else |
| 2308 | goto say_zero; |
| 2309 | #endif |
| 2310 | case O_RMDIR: |
| 2311 | if (maxarg < 1) |
| 2312 | tmps = str_get(stab_val(defstab)); |
| 2313 | else |
| 2314 | tmps = str_get(st[1]); |
| 2315 | #ifdef TAINT |
| 2316 | taintproper("Insecure dependency in rmdir"); |
| 2317 | #endif |
| 2318 | #ifdef HAS_RMDIR |
| 2319 | value = (double)(rmdir(tmps) >= 0); |
| 2320 | goto donumset; |
| 2321 | #else |
| 2322 | (void)strcpy(buf,"rmdir "); |
| 2323 | goto one_liner; /* see above in HAS_MKDIR */ |
| 2324 | #endif |
| 2325 | case O_GETPPID: |
| 2326 | #ifdef HAS_GETPPID |
| 2327 | value = (double)getppid(); |
| 2328 | goto donumset; |
| 2329 | #else |
| 2330 | fatal("Unsupported function getppid"); |
| 2331 | break; |
| 2332 | #endif |
| 2333 | case O_GETPGRP: |
| 2334 | #ifdef HAS_GETPGRP |
| 2335 | if (maxarg < 1) |
| 2336 | anum = 0; |
| 2337 | else |
| 2338 | anum = (int)str_gnum(st[1]); |
| 2339 | #ifdef _POSIX_SOURCE |
| 2340 | if (anum != 0) |
| 2341 | fatal("POSIX getpgrp can't take an argument"); |
| 2342 | value = (double)getpgrp(); |
| 2343 | #else |
| 2344 | value = (double)getpgrp(anum); |
| 2345 | #endif |
| 2346 | goto donumset; |
| 2347 | #else |
| 2348 | fatal("The getpgrp() function is unimplemented on this machine"); |
| 2349 | break; |
| 2350 | #endif |
| 2351 | case O_SETPGRP: |
| 2352 | #ifdef HAS_SETPGRP |
| 2353 | argtype = (int)str_gnum(st[1]); |
| 2354 | anum = (int)str_gnum(st[2]); |
| 2355 | #ifdef TAINT |
| 2356 | taintproper("Insecure dependency in setpgrp"); |
| 2357 | #endif |
| 2358 | value = (double)(setpgrp(argtype,anum) >= 0); |
| 2359 | goto donumset; |
| 2360 | #else |
| 2361 | fatal("The setpgrp() function is unimplemented on this machine"); |
| 2362 | break; |
| 2363 | #endif |
| 2364 | case O_GETPRIORITY: |
| 2365 | #ifdef HAS_GETPRIORITY |
| 2366 | argtype = (int)str_gnum(st[1]); |
| 2367 | anum = (int)str_gnum(st[2]); |
| 2368 | value = (double)getpriority(argtype,anum); |
| 2369 | goto donumset; |
| 2370 | #else |
| 2371 | fatal("The getpriority() function is unimplemented on this machine"); |
| 2372 | break; |
| 2373 | #endif |
| 2374 | case O_SETPRIORITY: |
| 2375 | #ifdef HAS_SETPRIORITY |
| 2376 | argtype = (int)str_gnum(st[1]); |
| 2377 | anum = (int)str_gnum(st[2]); |
| 2378 | optype = (int)str_gnum(st[3]); |
| 2379 | #ifdef TAINT |
| 2380 | taintproper("Insecure dependency in setpriority"); |
| 2381 | #endif |
| 2382 | value = (double)(setpriority(argtype,anum,optype) >= 0); |
| 2383 | goto donumset; |
| 2384 | #else |
| 2385 | fatal("The setpriority() function is unimplemented on this machine"); |
| 2386 | break; |
| 2387 | #endif |
| 2388 | case O_CHROOT: |
| 2389 | #ifdef HAS_CHROOT |
| 2390 | if (maxarg < 1) |
| 2391 | tmps = str_get(stab_val(defstab)); |
| 2392 | else |
| 2393 | tmps = str_get(st[1]); |
| 2394 | #ifdef TAINT |
| 2395 | taintproper("Insecure dependency in chroot"); |
| 2396 | #endif |
| 2397 | value = (double)(chroot(tmps) >= 0); |
| 2398 | goto donumset; |
| 2399 | #else |
| 2400 | fatal("Unsupported function chroot"); |
| 2401 | break; |
| 2402 | #endif |
| 2403 | case O_FCNTL: |
| 2404 | case O_IOCTL: |
| 2405 | if (maxarg <= 0) |
| 2406 | stab = last_in_stab; |
| 2407 | else if ((arg[1].arg_type & A_MASK) == A_WORD) |
| 2408 | stab = arg[1].arg_ptr.arg_stab; |
| 2409 | else |
| 2410 | stab = stabent(str_get(st[1]),TRUE); |
| 2411 | argtype = U_I(str_gnum(st[2])); |
| 2412 | #ifdef TAINT |
| 2413 | taintproper("Insecure dependency in ioctl"); |
| 2414 | #endif |
| 2415 | anum = do_ctl(optype,stab,argtype,st[3]); |
| 2416 | if (anum == -1) |
| 2417 | goto say_undef; |
| 2418 | if (anum != 0) { |
| 2419 | value = (double)anum; |
| 2420 | goto donumset; |
| 2421 | } |
| 2422 | str_set(str,"0 but true"); |
| 2423 | STABSET(str); |
| 2424 | break; |
| 2425 | case O_FLOCK: |
| 2426 | #ifdef HAS_FLOCK |
| 2427 | if (maxarg <= 0) |
| 2428 | stab = last_in_stab; |
| 2429 | else if ((arg[1].arg_type & A_MASK) == A_WORD) |
| 2430 | stab = arg[1].arg_ptr.arg_stab; |
| 2431 | else |
| 2432 | stab = stabent(str_get(st[1]),TRUE); |
| 2433 | if (stab && stab_io(stab)) |
| 2434 | fp = stab_io(stab)->ifp; |
| 2435 | else |
| 2436 | fp = Nullfp; |
| 2437 | if (fp) { |
| 2438 | argtype = (int)str_gnum(st[2]); |
| 2439 | value = (double)(flock(fileno(fp),argtype) >= 0); |
| 2440 | } |
| 2441 | else |
| 2442 | value = 0; |
| 2443 | goto donumset; |
| 2444 | #else |
| 2445 | fatal("The flock() function is unimplemented on this machine"); |
| 2446 | break; |
| 2447 | #endif |
| 2448 | case O_UNSHIFT: |
| 2449 | ary = stab_array(arg[1].arg_ptr.arg_stab); |
| 2450 | if (arglast[2] - arglast[1] != 1) |
| 2451 | do_unshift(ary,arglast); |
| 2452 | else { |
| 2453 | STR *tmpstr = Str_new(52,0); /* must copy the STR */ |
| 2454 | str_sset(tmpstr,st[2]); |
| 2455 | aunshift(ary,1); |
| 2456 | (void)astore(ary,0,tmpstr); |
| 2457 | } |
| 2458 | value = (double)(ary->ary_fill + 1); |
| 2459 | goto donumset; |
| 2460 | |
| 2461 | case O_TRY: |
| 2462 | sp = do_try(arg[1].arg_ptr.arg_cmd, |
| 2463 | gimme,arglast); |
| 2464 | goto array_return; |
| 2465 | |
| 2466 | case O_EVALONCE: |
| 2467 | sp = do_eval(st[1], O_EVAL, curcmd->c_stash, TRUE, |
| 2468 | gimme,arglast); |
| 2469 | if (eval_root) { |
| 2470 | str_free(arg[1].arg_ptr.arg_str); |
| 2471 | arg[1].arg_ptr.arg_cmd = eval_root; |
| 2472 | arg[1].arg_type = (A_CMD|A_DONT); |
| 2473 | arg[0].arg_type = O_TRY; |
| 2474 | } |
| 2475 | goto array_return; |
| 2476 | |
| 2477 | case O_REQUIRE: |
| 2478 | case O_DOFILE: |
| 2479 | case O_EVAL: |
| 2480 | if (maxarg < 1) |
| 2481 | tmpstr = stab_val(defstab); |
| 2482 | else |
| 2483 | tmpstr = |
| 2484 | (arg[1].arg_type & A_MASK) != A_NULL ? st[1] : stab_val(defstab); |
| 2485 | #ifdef TAINT |
| 2486 | tainted |= tmpstr->str_tainted; |
| 2487 | taintproper("Insecure dependency in eval"); |
| 2488 | #endif |
| 2489 | sp = do_eval(tmpstr, optype, curcmd->c_stash, FALSE, |
| 2490 | gimme,arglast); |
| 2491 | goto array_return; |
| 2492 | |
| 2493 | case O_FTRREAD: |
| 2494 | argtype = 0; |
| 2495 | anum = S_IRUSR; |
| 2496 | goto check_perm; |
| 2497 | case O_FTRWRITE: |
| 2498 | argtype = 0; |
| 2499 | anum = S_IWUSR; |
| 2500 | goto check_perm; |
| 2501 | case O_FTREXEC: |
| 2502 | argtype = 0; |
| 2503 | anum = S_IXUSR; |
| 2504 | goto check_perm; |
| 2505 | case O_FTEREAD: |
| 2506 | argtype = 1; |
| 2507 | anum = S_IRUSR; |
| 2508 | goto check_perm; |
| 2509 | case O_FTEWRITE: |
| 2510 | argtype = 1; |
| 2511 | anum = S_IWUSR; |
| 2512 | goto check_perm; |
| 2513 | case O_FTEEXEC: |
| 2514 | argtype = 1; |
| 2515 | anum = S_IXUSR; |
| 2516 | check_perm: |
| 2517 | if (mystat(arg,st[1]) < 0) |
| 2518 | goto say_undef; |
| 2519 | if (cando(anum,argtype,&statcache)) |
| 2520 | goto say_yes; |
| 2521 | goto say_no; |
| 2522 | |
| 2523 | case O_FTIS: |
| 2524 | if (mystat(arg,st[1]) < 0) |
| 2525 | goto say_undef; |
| 2526 | goto say_yes; |
| 2527 | case O_FTEOWNED: |
| 2528 | case O_FTROWNED: |
| 2529 | if (mystat(arg,st[1]) < 0) |
| 2530 | goto say_undef; |
| 2531 | if (statcache.st_uid == (optype == O_FTEOWNED ? euid : uid) ) |
| 2532 | goto say_yes; |
| 2533 | goto say_no; |
| 2534 | case O_FTZERO: |
| 2535 | if (mystat(arg,st[1]) < 0) |
| 2536 | goto say_undef; |
| 2537 | if (!statcache.st_size) |
| 2538 | goto say_yes; |
| 2539 | goto say_no; |
| 2540 | case O_FTSIZE: |
| 2541 | if (mystat(arg,st[1]) < 0) |
| 2542 | goto say_undef; |
| 2543 | value = (double)statcache.st_size; |
| 2544 | goto donumset; |
| 2545 | |
| 2546 | case O_FTMTIME: |
| 2547 | if (mystat(arg,st[1]) < 0) |
| 2548 | goto say_undef; |
| 2549 | value = (double)(basetime - statcache.st_mtime) / 86400.0; |
| 2550 | goto donumset; |
| 2551 | case O_FTATIME: |
| 2552 | if (mystat(arg,st[1]) < 0) |
| 2553 | goto say_undef; |
| 2554 | value = (double)(basetime - statcache.st_atime) / 86400.0; |
| 2555 | goto donumset; |
| 2556 | case O_FTCTIME: |
| 2557 | if (mystat(arg,st[1]) < 0) |
| 2558 | goto say_undef; |
| 2559 | value = (double)(basetime - statcache.st_ctime) / 86400.0; |
| 2560 | goto donumset; |
| 2561 | |
| 2562 | case O_FTSOCK: |
| 2563 | if (mystat(arg,st[1]) < 0) |
| 2564 | goto say_undef; |
| 2565 | if (S_ISSOCK(statcache.st_mode)) |
| 2566 | goto say_yes; |
| 2567 | goto say_no; |
| 2568 | case O_FTCHR: |
| 2569 | if (mystat(arg,st[1]) < 0) |
| 2570 | goto say_undef; |
| 2571 | if (S_ISCHR(statcache.st_mode)) |
| 2572 | goto say_yes; |
| 2573 | goto say_no; |
| 2574 | case O_FTBLK: |
| 2575 | if (mystat(arg,st[1]) < 0) |
| 2576 | goto say_undef; |
| 2577 | if (S_ISBLK(statcache.st_mode)) |
| 2578 | goto say_yes; |
| 2579 | goto say_no; |
| 2580 | case O_FTFILE: |
| 2581 | if (mystat(arg,st[1]) < 0) |
| 2582 | goto say_undef; |
| 2583 | if (S_ISREG(statcache.st_mode)) |
| 2584 | goto say_yes; |
| 2585 | goto say_no; |
| 2586 | case O_FTDIR: |
| 2587 | if (mystat(arg,st[1]) < 0) |
| 2588 | goto say_undef; |
| 2589 | if (S_ISDIR(statcache.st_mode)) |
| 2590 | goto say_yes; |
| 2591 | goto say_no; |
| 2592 | case O_FTPIPE: |
| 2593 | if (mystat(arg,st[1]) < 0) |
| 2594 | goto say_undef; |
| 2595 | if (S_ISFIFO(statcache.st_mode)) |
| 2596 | goto say_yes; |
| 2597 | goto say_no; |
| 2598 | case O_FTLINK: |
| 2599 | if (mylstat(arg,st[1]) < 0) |
| 2600 | goto say_undef; |
| 2601 | if (S_ISLNK(statcache.st_mode)) |
| 2602 | goto say_yes; |
| 2603 | goto say_no; |
| 2604 | case O_SYMLINK: |
| 2605 | #ifdef HAS_SYMLINK |
| 2606 | tmps = str_get(st[1]); |
| 2607 | tmps2 = str_get(st[2]); |
| 2608 | #ifdef TAINT |
| 2609 | taintproper("Insecure dependency in symlink"); |
| 2610 | #endif |
| 2611 | value = (double)(symlink(tmps,tmps2) >= 0); |
| 2612 | goto donumset; |
| 2613 | #else |
| 2614 | fatal("Unsupported function symlink"); |
| 2615 | #endif |
| 2616 | case O_READLINK: |
| 2617 | #ifdef HAS_SYMLINK |
| 2618 | if (maxarg < 1) |
| 2619 | tmps = str_get(stab_val(defstab)); |
| 2620 | else |
| 2621 | tmps = str_get(st[1]); |
| 2622 | anum = readlink(tmps,buf,sizeof buf); |
| 2623 | if (anum < 0) |
| 2624 | goto say_undef; |
| 2625 | str_nset(str,buf,anum); |
| 2626 | break; |
| 2627 | #else |
| 2628 | goto say_undef; /* just pretend it's a normal file */ |
| 2629 | #endif |
| 2630 | case O_FTSUID: |
| 2631 | #ifdef S_ISUID |
| 2632 | anum = S_ISUID; |
| 2633 | goto check_xid; |
| 2634 | #else |
| 2635 | goto say_no; |
| 2636 | #endif |
| 2637 | case O_FTSGID: |
| 2638 | #ifdef S_ISGID |
| 2639 | anum = S_ISGID; |
| 2640 | goto check_xid; |
| 2641 | #else |
| 2642 | goto say_no; |
| 2643 | #endif |
| 2644 | case O_FTSVTX: |
| 2645 | #ifdef S_ISVTX |
| 2646 | anum = S_ISVTX; |
| 2647 | #else |
| 2648 | goto say_no; |
| 2649 | #endif |
| 2650 | check_xid: |
| 2651 | if (mystat(arg,st[1]) < 0) |
| 2652 | goto say_undef; |
| 2653 | if (statcache.st_mode & anum) |
| 2654 | goto say_yes; |
| 2655 | goto say_no; |
| 2656 | case O_FTTTY: |
| 2657 | if (arg[1].arg_type & A_DONT) { |
| 2658 | stab = arg[1].arg_ptr.arg_stab; |
| 2659 | tmps = ""; |
| 2660 | } |
| 2661 | else |
| 2662 | stab = stabent(tmps = str_get(st[1]),FALSE); |
| 2663 | if (stab && stab_io(stab) && stab_io(stab)->ifp) |
| 2664 | anum = fileno(stab_io(stab)->ifp); |
| 2665 | else if (isDIGIT(*tmps)) |
| 2666 | anum = atoi(tmps); |
| 2667 | else |
| 2668 | goto say_undef; |
| 2669 | if (isatty(anum)) |
| 2670 | goto say_yes; |
| 2671 | goto say_no; |
| 2672 | case O_FTTEXT: |
| 2673 | case O_FTBINARY: |
| 2674 | str = do_fttext(arg,st[1]); |
| 2675 | break; |
| 2676 | #ifdef HAS_SOCKET |
| 2677 | case O_SOCKET: |
| 2678 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
| 2679 | stab = arg[1].arg_ptr.arg_stab; |
| 2680 | else |
| 2681 | stab = stabent(str_get(st[1]),TRUE); |
| 2682 | #ifndef lint |
| 2683 | value = (double)do_socket(stab,arglast); |
| 2684 | #else |
| 2685 | (void)do_socket(stab,arglast); |
| 2686 | #endif |
| 2687 | goto donumset; |
| 2688 | case O_BIND: |
| 2689 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
| 2690 | stab = arg[1].arg_ptr.arg_stab; |
| 2691 | else |
| 2692 | stab = stabent(str_get(st[1]),TRUE); |
| 2693 | #ifndef lint |
| 2694 | value = (double)do_bind(stab,arglast); |
| 2695 | #else |
| 2696 | (void)do_bind(stab,arglast); |
| 2697 | #endif |
| 2698 | goto donumset; |
| 2699 | case O_CONNECT: |
| 2700 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
| 2701 | stab = arg[1].arg_ptr.arg_stab; |
| 2702 | else |
| 2703 | stab = stabent(str_get(st[1]),TRUE); |
| 2704 | #ifndef lint |
| 2705 | value = (double)do_connect(stab,arglast); |
| 2706 | #else |
| 2707 | (void)do_connect(stab,arglast); |
| 2708 | #endif |
| 2709 | goto donumset; |
| 2710 | case O_LISTEN: |
| 2711 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
| 2712 | stab = arg[1].arg_ptr.arg_stab; |
| 2713 | else |
| 2714 | stab = stabent(str_get(st[1]),TRUE); |
| 2715 | #ifndef lint |
| 2716 | value = (double)do_listen(stab,arglast); |
| 2717 | #else |
| 2718 | (void)do_listen(stab,arglast); |
| 2719 | #endif |
| 2720 | goto donumset; |
| 2721 | case O_ACCEPT: |
| 2722 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
| 2723 | stab = arg[1].arg_ptr.arg_stab; |
| 2724 | else |
| 2725 | stab = stabent(str_get(st[1]),TRUE); |
| 2726 | if ((arg[2].arg_type & A_MASK) == A_WORD) |
| 2727 | stab2 = arg[2].arg_ptr.arg_stab; |
| 2728 | else |
| 2729 | stab2 = stabent(str_get(st[2]),TRUE); |
| 2730 | do_accept(str,stab,stab2); |
| 2731 | STABSET(str); |
| 2732 | break; |
| 2733 | case O_GHBYNAME: |
| 2734 | if (maxarg < 1) |
| 2735 | goto say_undef; |
| 2736 | case O_GHBYADDR: |
| 2737 | case O_GHOSTENT: |
| 2738 | sp = do_ghent(optype, |
| 2739 | gimme,arglast); |
| 2740 | goto array_return; |
| 2741 | case O_GNBYNAME: |
| 2742 | if (maxarg < 1) |
| 2743 | goto say_undef; |
| 2744 | case O_GNBYADDR: |
| 2745 | case O_GNETENT: |
| 2746 | sp = do_gnent(optype, |
| 2747 | gimme,arglast); |
| 2748 | goto array_return; |
| 2749 | case O_GPBYNAME: |
| 2750 | if (maxarg < 1) |
| 2751 | goto say_undef; |
| 2752 | case O_GPBYNUMBER: |
| 2753 | case O_GPROTOENT: |
| 2754 | sp = do_gpent(optype, |
| 2755 | gimme,arglast); |
| 2756 | goto array_return; |
| 2757 | case O_GSBYNAME: |
| 2758 | if (maxarg < 1) |
| 2759 | goto say_undef; |
| 2760 | case O_GSBYPORT: |
| 2761 | case O_GSERVENT: |
| 2762 | sp = do_gsent(optype, |
| 2763 | gimme,arglast); |
| 2764 | goto array_return; |
| 2765 | case O_SHOSTENT: |
| 2766 | value = (double) sethostent((int)str_gnum(st[1])); |
| 2767 | goto donumset; |
| 2768 | case O_SNETENT: |
| 2769 | value = (double) setnetent((int)str_gnum(st[1])); |
| 2770 | goto donumset; |
| 2771 | case O_SPROTOENT: |
| 2772 | value = (double) setprotoent((int)str_gnum(st[1])); |
| 2773 | goto donumset; |
| 2774 | case O_SSERVENT: |
| 2775 | value = (double) setservent((int)str_gnum(st[1])); |
| 2776 | goto donumset; |
| 2777 | case O_EHOSTENT: |
| 2778 | value = (double) endhostent(); |
| 2779 | goto donumset; |
| 2780 | case O_ENETENT: |
| 2781 | value = (double) endnetent(); |
| 2782 | goto donumset; |
| 2783 | case O_EPROTOENT: |
| 2784 | value = (double) endprotoent(); |
| 2785 | goto donumset; |
| 2786 | case O_ESERVENT: |
| 2787 | value = (double) endservent(); |
| 2788 | goto donumset; |
| 2789 | case O_SOCKPAIR: |
| 2790 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
| 2791 | stab = arg[1].arg_ptr.arg_stab; |
| 2792 | else |
| 2793 | stab = stabent(str_get(st[1]),TRUE); |
| 2794 | if ((arg[2].arg_type & A_MASK) == A_WORD) |
| 2795 | stab2 = arg[2].arg_ptr.arg_stab; |
| 2796 | else |
| 2797 | stab2 = stabent(str_get(st[2]),TRUE); |
| 2798 | #ifndef lint |
| 2799 | value = (double)do_spair(stab,stab2,arglast); |
| 2800 | #else |
| 2801 | (void)do_spair(stab,stab2,arglast); |
| 2802 | #endif |
| 2803 | goto donumset; |
| 2804 | case O_SHUTDOWN: |
| 2805 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
| 2806 | stab = arg[1].arg_ptr.arg_stab; |
| 2807 | else |
| 2808 | stab = stabent(str_get(st[1]),TRUE); |
| 2809 | #ifndef lint |
| 2810 | value = (double)do_shutdown(stab,arglast); |
| 2811 | #else |
| 2812 | (void)do_shutdown(stab,arglast); |
| 2813 | #endif |
| 2814 | goto donumset; |
| 2815 | case O_GSOCKOPT: |
| 2816 | case O_SSOCKOPT: |
| 2817 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
| 2818 | stab = arg[1].arg_ptr.arg_stab; |
| 2819 | else |
| 2820 | stab = stabent(str_get(st[1]),TRUE); |
| 2821 | sp = do_sopt(optype,stab,arglast); |
| 2822 | goto array_return; |
| 2823 | case O_GETSOCKNAME: |
| 2824 | case O_GETPEERNAME: |
| 2825 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
| 2826 | stab = arg[1].arg_ptr.arg_stab; |
| 2827 | else |
| 2828 | stab = stabent(str_get(st[1]),TRUE); |
| 2829 | if (!stab) |
| 2830 | goto say_undef; |
| 2831 | sp = do_getsockname(optype,stab,arglast); |
| 2832 | goto array_return; |
| 2833 | |
| 2834 | #else /* HAS_SOCKET not defined */ |
| 2835 | case O_SOCKET: |
| 2836 | case O_BIND: |
| 2837 | case O_CONNECT: |
| 2838 | case O_LISTEN: |
| 2839 | case O_ACCEPT: |
| 2840 | case O_SOCKPAIR: |
| 2841 | case O_GHBYNAME: |
| 2842 | case O_GHBYADDR: |
| 2843 | case O_GHOSTENT: |
| 2844 | case O_GNBYNAME: |
| 2845 | case O_GNBYADDR: |
| 2846 | case O_GNETENT: |
| 2847 | case O_GPBYNAME: |
| 2848 | case O_GPBYNUMBER: |
| 2849 | case O_GPROTOENT: |
| 2850 | case O_GSBYNAME: |
| 2851 | case O_GSBYPORT: |
| 2852 | case O_GSERVENT: |
| 2853 | case O_SHOSTENT: |
| 2854 | case O_SNETENT: |
| 2855 | case O_SPROTOENT: |
| 2856 | case O_SSERVENT: |
| 2857 | case O_EHOSTENT: |
| 2858 | case O_ENETENT: |
| 2859 | case O_EPROTOENT: |
| 2860 | case O_ESERVENT: |
| 2861 | case O_SHUTDOWN: |
| 2862 | case O_GSOCKOPT: |
| 2863 | case O_SSOCKOPT: |
| 2864 | case O_GETSOCKNAME: |
| 2865 | case O_GETPEERNAME: |
| 2866 | badsock: |
| 2867 | fatal("Unsupported socket function"); |
| 2868 | #endif /* HAS_SOCKET */ |
| 2869 | case O_SSELECT: |
| 2870 | #ifdef HAS_SELECT |
| 2871 | sp = do_select(gimme,arglast); |
| 2872 | goto array_return; |
| 2873 | #else |
| 2874 | fatal("select not implemented"); |
| 2875 | #endif |
| 2876 | case O_FILENO: |
| 2877 | if (maxarg < 1) |
| 2878 | goto say_undef; |
| 2879 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
| 2880 | stab = arg[1].arg_ptr.arg_stab; |
| 2881 | else |
| 2882 | stab = stabent(str_get(st[1]),TRUE); |
| 2883 | if (!stab || !(stio = stab_io(stab)) || !(fp = stio->ifp)) |
| 2884 | goto say_undef; |
| 2885 | value = fileno(fp); |
| 2886 | goto donumset; |
| 2887 | case O_BINMODE: |
| 2888 | if (maxarg < 1) |
| 2889 | goto say_undef; |
| 2890 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
| 2891 | stab = arg[1].arg_ptr.arg_stab; |
| 2892 | else |
| 2893 | stab = stabent(str_get(st[1]),TRUE); |
| 2894 | if (!stab || !(stio = stab_io(stab)) || !(fp = stio->ifp)) |
| 2895 | goto say_undef; |
| 2896 | #ifdef DOSISH |
| 2897 | #ifdef atarist |
| 2898 | if(fflush(fp)) |
| 2899 | str_set(str, No); |
| 2900 | else |
| 2901 | { |
| 2902 | fp->_flag |= _IOBIN; |
| 2903 | str_set(str, Yes); |
| 2904 | } |
| 2905 | #else |
| 2906 | str_set(str, (setmode(fileno(fp), O_BINARY) != -1) ? Yes : No); |
| 2907 | #endif |
| 2908 | #else |
| 2909 | str_set(str, Yes); |
| 2910 | #endif |
| 2911 | STABSET(str); |
| 2912 | break; |
| 2913 | case O_VEC: |
| 2914 | sp = do_vec(str == st[1], arg->arg_ptr.arg_str, arglast); |
| 2915 | goto array_return; |
| 2916 | case O_GPWNAM: |
| 2917 | case O_GPWUID: |
| 2918 | case O_GPWENT: |
| 2919 | #ifdef HAS_PASSWD |
| 2920 | sp = do_gpwent(optype, |
| 2921 | gimme,arglast); |
| 2922 | goto array_return; |
| 2923 | case O_SPWENT: |
| 2924 | value = (double) setpwent(); |
| 2925 | goto donumset; |
| 2926 | case O_EPWENT: |
| 2927 | value = (double) endpwent(); |
| 2928 | goto donumset; |
| 2929 | #else |
| 2930 | case O_EPWENT: |
| 2931 | case O_SPWENT: |
| 2932 | fatal("Unsupported password function"); |
| 2933 | break; |
| 2934 | #endif |
| 2935 | case O_GGRNAM: |
| 2936 | case O_GGRGID: |
| 2937 | case O_GGRENT: |
| 2938 | #ifdef HAS_GROUP |
| 2939 | sp = do_ggrent(optype, |
| 2940 | gimme,arglast); |
| 2941 | goto array_return; |
| 2942 | case O_SGRENT: |
| 2943 | value = (double) setgrent(); |
| 2944 | goto donumset; |
| 2945 | case O_EGRENT: |
| 2946 | value = (double) endgrent(); |
| 2947 | goto donumset; |
| 2948 | #else |
| 2949 | case O_EGRENT: |
| 2950 | case O_SGRENT: |
| 2951 | fatal("Unsupported group function"); |
| 2952 | break; |
| 2953 | #endif |
| 2954 | case O_GETLOGIN: |
| 2955 | #ifdef HAS_GETLOGIN |
| 2956 | if (!(tmps = getlogin())) |
| 2957 | goto say_undef; |
| 2958 | str_set(str,tmps); |
| 2959 | #else |
| 2960 | fatal("Unsupported function getlogin"); |
| 2961 | #endif |
| 2962 | break; |
| 2963 | case O_OPEN_DIR: |
| 2964 | case O_READDIR: |
| 2965 | case O_TELLDIR: |
| 2966 | case O_SEEKDIR: |
| 2967 | case O_REWINDDIR: |
| 2968 | case O_CLOSEDIR: |
| 2969 | if (maxarg < 1) |
| 2970 | goto say_undef; |
| 2971 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
| 2972 | stab = arg[1].arg_ptr.arg_stab; |
| 2973 | else |
| 2974 | stab = stabent(str_get(st[1]),TRUE); |
| 2975 | if (!stab) |
| 2976 | goto say_undef; |
| 2977 | sp = do_dirop(optype,stab,gimme,arglast); |
| 2978 | goto array_return; |
| 2979 | case O_SYSCALL: |
| 2980 | value = (double)do_syscall(arglast); |
| 2981 | goto donumset; |
| 2982 | case O_PIPE_OP: |
| 2983 | #ifdef HAS_PIPE |
| 2984 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
| 2985 | stab = arg[1].arg_ptr.arg_stab; |
| 2986 | else |
| 2987 | stab = stabent(str_get(st[1]),TRUE); |
| 2988 | if ((arg[2].arg_type & A_MASK) == A_WORD) |
| 2989 | stab2 = arg[2].arg_ptr.arg_stab; |
| 2990 | else |
| 2991 | stab2 = stabent(str_get(st[2]),TRUE); |
| 2992 | do_pipe(str,stab,stab2); |
| 2993 | STABSET(str); |
| 2994 | #else |
| 2995 | fatal("Unsupported function pipe"); |
| 2996 | #endif |
| 2997 | break; |
| 2998 | } |
| 2999 | |
| 3000 | normal_return: |
| 3001 | st[1] = str; |
| 3002 | #ifdef DEBUGGING |
| 3003 | if (debug) { |
| 3004 | dlevel--; |
| 3005 | if (debug & 8) |
| 3006 | deb("%s RETURNS \"%s\"\n",opname[optype],str_get(str)); |
| 3007 | } |
| 3008 | #endif |
| 3009 | return arglast[0] + 1; |
| 3010 | } |