package/busybox/patches/920-awx.patch

   1 diff -urN bb.old/editors/awk.c bb.dev/editors/awk.c
   2 --- bb.old/editors/awk.c        2007-05-20 04:17:05.002197784 +0200
   3 +++ bb.dev/editors/awk.c        2007-05-20 22:40:48.183743936 +0200
   4 @@ -30,6 +30,11 @@
   5  /* these flags are static, don't change them when value is changed */
   6  #define        VF_DONTTOUCH (VF_ARRAY | VF_SPECIAL | VF_WALK | VF_CHILD | VF_DIRTY)
   7
   8 +#ifdef CONFIG_AWX
   9 +#define fputs(s, stream) fputs_hook(s, stream)
  10 +static inline int fputs_hook (__const char *__restrict __s, FILE *__restrict __stream);
  11 +#endif
  12 +
  13  /* Variable */
  14  typedef struct var_s {
  15         unsigned short type;            /* flags */
  16 @@ -50,10 +55,15 @@
  17         char *programname;
  18  } chain;
  19
  20 +typedef var *(*awk_cfunc)(var *res, var *args, int nargs);
  21  /* Function */
  22  typedef struct func_s {
  23         unsigned short nargs;
  24 -       struct chain_s body;
  25 +       enum { AWKFUNC, CFUNC } type;
  26 +       union {
  27 +               awk_cfunc cfunc;
  28 +               struct chain_s body;
  29 +       } x;
  30  } func;
  31
  32  /* I/O stream */
  33 @@ -1312,7 +1322,8 @@
  34                         next_token(TC_FUNCTION);
  35                         pos++;
  36                         f = newfunc(t.string);
  37 -                       f->body.first = NULL;
  38 +                       f->type = AWKFUNC;
  39 +                       f->x.body.first = NULL;
  40                         f->nargs = 0;
  41                         while (next_token(TC_VARIABLE | TC_SEQTERM) & TC_VARIABLE) {
  42                                 v = findvar(ahash, t.string);
  43 @@ -1321,7 +1332,7 @@
  44                                 if (next_token(TC_COMMA | TC_SEQTERM) & TC_SEQTERM)
  45                                         break;
  46                         }
  47 -                       seq = &(f->body);
  48 +                       seq = &(f->x.body);
  49                         chain_group();
  50                         clear_array(ahash);
  51
  52 @@ -2260,7 +2271,8 @@
  53                         break;
  54
  55                 case XC( OC_FUNC ):
  56 -                       if (! op->r.f->body.first)
  57 +                       if ((op->r.f->type == AWKFUNC) &&
  58 +                               !op->r.f->x.body.first)
  59                                 runtime_error(EMSG_UNDEF_FUNC);
  60
  61                         X.v = R.v = nvalloc(op->r.f->nargs+1);
  62 @@ -2277,7 +2289,11 @@
  63                         fnargs = X.v;
  64
  65                         L.s = programname;
  66 -                       res = evaluate(op->r.f->body.first, res);
  67 +                       if (op->r.f->type == AWKFUNC)
  68 +                               res = evaluate(op->r.f->x.body.first, res);
  69 +                       else if (op->r.f->type == CFUNC)
  70 +                               res = op->r.f->x.cfunc(res, fnargs, op->r.f->nargs);
  71 +
  72                         programname = L.s;
  73
  74                         nvfree(fnargs);
  75 @@ -2637,6 +2653,11 @@
  76         return &rsm;
  77  }
  78
  79 +#ifdef CONFIG_AWX
  80 +static int is_awx = 0;
  81 +#include "awx.c"
  82 +#endif
  83 +
  84  int awk_main(int argc, char **argv)
  85  {
  86         int i, j, flen;
  87 @@ -2693,6 +2714,10 @@
  88                 free(s);
  89         }
  90
  91 +#ifdef CONFIG_AWX
  92 +       do_awx(argc, argv);
  93 +#endif
  94 +
  95         programname = NULL;
  96         while((c = getopt(argc, argv, "F:v:f:W:")) != EOF) {
  97                 switch (c) {
  98 diff -urN bb.old/editors/awx.c bb.dev/editors/awx.c
  99 --- bb.old/editors/awx.c        1970-01-01 01:00:00.000000000 +0100
 100 +++ bb.dev/editors/awx.c        2007-05-23 22:37:38.547183608 +0200
 101 @@ -0,0 +1,633 @@
 102 +/*
 103 + * awk web extension
 104 + *
 105 + * Copyright (C) 2007 by Felix Fietkau <nbd@openwrt.org>
 106 + *
 107 + * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
 108 + */
 109 +
 110 +#include <cgi.h>
 111 +#include <glob.h>
 112 +#include "awx_parser.h"
 113 +
 114 +#define LINE_BUF 2048
 115 +#define HASH_MAX       1536
 116 +#define TR_START       "@TR<<"
 117 +#define TR_END         ">>"
 118 +#define MAX_TR 32
 119 +
 120 +#undef fputs
 121 +
 122 +static xhash *lstr = NULL;
 123 +static xhash *formvar = NULL;
 124 +static int lang_inuse = 0;
 125 +
 126 +/* look up a translation symbol from the hash */
 127 +static inline char *translate_lookup(char *str)
 128 +{
 129 +       char *name, *def, *p;
 130 +       hash_item *hi;
 131 +       var *v;
 132 +
 133 +       def = name = str;
 134 +       if (((p = strchr(str, '|')) != NULL)
 135 +               || ((p = strchr(str, '#')) != NULL)) {
 136 +               def = p + 1;
 137 +               *p = 0;
 138 +       }
 139 +
 140 +       hi = hash_search(lstr, name);
 141 +       if (!hi)
 142 +               return def;
 143 +
 144 +       v = &hi->data.v;
 145 +
 146 +       return getvar_s(v);
 147 +}
 148 +
 149 +/* look for translation markers in the line and return the translated string */
 150 +static char *translate_line(char *line)
 151 +{
 152 +       char *tok[MAX_TR * 3];
 153 +       char *l, *p, *p2 = NULL, *res;
 154 +       int len = 0, _pos = 0, i, tr_abort = 0;
 155 +       static char *backlog = NULL;
 156 +
 157 +       if (backlog && line) {
 158 +               backlog = xrealloc(backlog, strlen(backlog) + strlen(line) + 1);
 159 +               sprintf(backlog + strlen(backlog), line);
 160 +               l = backlog;
 161 +       } else {
 162 +               l = line;
 163 +       }
 164 +
 165 +       while (l != NULL) {
 166 +               if ((p = strstr(l, TR_START)) == NULL) {
 167 +                       len += strlen((tok[_pos++] = l));
 168 +                       break;
 169 +               }
 170 +
 171 +               p2 = strstr(p, TR_END);
 172 +               if (p2 == NULL) {
 173 +                       p2 = xstrdup(l);
 174 +                       tr_abort = 1;
 175 +                       break;
 176 +               }
 177 +
 178 +               *p = 0;
 179 +               len += strlen((tok[_pos++] = l));
 180 +               *p2 = 0;
 181 +               len += strlen((tok[_pos++] = translate_lookup(p + strlen(TR_START))));
 182 +
 183 +               l = p2;
 184 +               l += strlen(TR_END);
 185 +       }
 186 +       len++;
 187 +
 188 +       p = xmalloc(len + 1);
 189 +       *p = 0;
 190 +       res = p;
 191 +       for (i = 0; i < _pos; i++) {
 192 +               strcat(p, tok[i]);
 193 +               p += strlen(tok[i]);
 194 +       }
 195 +       if (backlog) {
 196 +               free(backlog);
 197 +               backlog = NULL;
 198 +       }
 199 +       if (tr_abort && p2)
 200 +               backlog = p2;
 201 +
 202 +       return res;
 203 +}
 204 +
 205 +/* hook for intercepting awk's use of puts. used for running all printed strings
 206 + * through the translation system */
 207 +static inline int fputs_hook (__const char *__restrict __s, FILE *__restrict __stream)
 208 +{
 209 +       if (lang_inuse && (__stream == stdout)) {
 210 +               int ret;
 211 +               char *str;
 212 +
 213 +               str = translate_line((char *) __s);
 214 +               ret = fputs(str, __stream);
 215 +               free(str);
 216 +
 217 +               return ret;
 218 +       }
 219 +
 220 +       return fputs(__s, __stream);
 221 +}
 222 +
 223 +static var *init_lang(var *res, var *args, int nargs)
 224 +{
 225 +       if (!lstr)
 226 +               lstr = hash_init();
 227 +
 228 +       lang_inuse = 1;
 229 +       return res;
 230 +}
 231 +
 232 +
 233 +/* load and parse language file */
 234 +static void load_lang_file(char *file)
 235 +{
 236 +       FILE *f;
 237 +       char *b, *name, *value;
 238 +       char buf1[LINE_BUF];
 239 +
 240 +       if ((f = fopen(file, "r")) == NULL)
 241 +               return;
 242 +
 243 +       while (!feof(f) && (fgets(buf1, LINE_BUF - 1, f) != NULL)) {
 244 +               b = buf1;
 245 +               if (*b == '#')
 246 +                       continue; /* skip comments */
 247 +
 248 +               while (isspace(*b))
 249 +                       b++; /* skip leading spaces */
 250 +               if (!*b)
 251 +                       continue;
 252 +
 253 +               name = b;
 254 +               if ((b = strstr(name, "=>")) == NULL)
 255 +                       continue; /* separator not found */
 256 +
 257 +               value = b + 2;
 258 +               if (!*value)
 259 +                       continue;
 260 +
 261 +               *b = 0;
 262 +               for (b--; isspace(*b); b--)
 263 +                       *b = 0; /* remove trailing spaces */
 264 +
 265 +               while (isspace(*value))
 266 +                       value++; /* skip leading spaces */
 267 +
 268 +               for (b = value + strlen(value) - 1; isspace(*b); b--)
 269 +                       *b = 0; /* remove trailing spaces */
 270 +
 271 +               if (!*value)
 272 +                       continue;
 273 +
 274 +               setvar_s(findvar(lstr,name), value);
 275 +       }
 276 +
 277 +       fclose(f);
 278 +}
 279 +
 280 +static var *load_lang(var *res, var *args, int nargs)
 281 +{
 282 +       const char *langfmt = "/usr/lib/webif/lang/%s.txt";
 283 +       char lbuf[LINE_BUF];
 284 +       char *lang;
 285 +
 286 +       if (!lang_inuse)
 287 +               init_lang(res, args, nargs);
 288 +
 289 +       lang = getvar_s(args);
 290 +       if (!lang || !strcmp(lang, ""))
 291 +               return res;
 292 +
 293 +       sprintf(lbuf, langfmt, lang);
 294 +       load_lang_file(lbuf);
 295 +
 296 +       return res;
 297 +}
 298 +
 299 +/* read the contents of an entire file */
 300 +static char *get_file(char *fname)
 301 +{
 302 +       FILE *F;
 303 +       char *s = NULL;
 304 +       int i, j, flen;
 305 +
 306 +       F = fopen(fname, "r");
 307 +       if (!F) {
 308 +               return NULL;
 309 +       }
 310 +
 311 +       if (fseek(F, 0, SEEK_END) == 0) {
 312 +               flen = ftell(F);
 313 +               s = (char *)xmalloc(flen+4);
 314 +               fseek(F, 0, SEEK_SET);
 315 +               i = 1 + fread(s+1, 1, flen, F);
 316 +       } else {
 317 +               for (i=j=1; j>0; i+=j) {
 318 +                       s = (char *)xrealloc(s, i+4096);
 319 +                       j = fread(s+i, 1, 4094, F);
 320 +               }
 321 +       }
 322 +
 323 +       s[i] = '\0';
 324 +       fclose(F);
 325 +       return s;
 326 +}
 327 +
 328 +
 329 +/* parse_include():
 330 + *
 331 + * taken from parse_program from awk.c
 332 + * END{} is not parsed here, and BEGIN{} is executed immediately
 333 + */
 334 +static void parse_include(char *p)
 335 +{
 336 +       uint32_t tclass;
 337 +       chain *initseq = NULL;
 338 +       chain tmp;
 339 +       func *f;
 340 +       var *v, *tv;
 341 +
 342 +       tv = nvalloc(1);
 343 +       memset(&tmp, 0, sizeof(tmp));
 344 +       pos = p;
 345 +       t.lineno = 1;
 346 +       while ((tclass = next_token(TC_EOF | TC_OPSEQ |
 347 +                               TC_OPTERM | TC_BEGIN | TC_FUNCDECL)) != TC_EOF) {
 348 +               if (tclass & TC_OPTERM)
 349 +                       continue;
 350 +
 351 +               seq = &tmp;
 352 +               if (tclass & TC_BEGIN) {
 353 +                       initseq = xzalloc(sizeof(chain));
 354 +                       seq = initseq;
 355 +                       chain_group();
 356 +               } else if (tclass & TC_FUNCDECL) {
 357 +                       next_token(TC_FUNCTION);
 358 +                       pos++;
 359 +                       f = newfunc(t.string);
 360 +                       f->type = AWKFUNC;
 361 +                       f->x.body.first = NULL;
 362 +                       f->nargs = 0;
 363 +                       while (next_token(TC_VARIABLE | TC_SEQTERM) & TC_VARIABLE) {
 364 +                               v = findvar(ahash, t.string);
 365 +                               v->x.aidx = (f->nargs)++;
 366 +
 367 +                               if (next_token(TC_COMMA | TC_SEQTERM) & TC_SEQTERM)
 368 +                                       break;
 369 +                       }
 370 +                       seq = &(f->x.body);
 371 +                       chain_group();
 372 +                       clear_array(ahash);
 373 +               }
 374 +       }
 375 +       if (initseq && initseq->first)
 376 +               tv = evaluate(initseq->first, tv);
 377 +       nvfree(tv);
 378 +}
 379 +
 380 +
 381 +/* include an awk file and run its BEGIN{} section */
 382 +static xhash *includes = NULL;
 383 +static void include_file(char *filename)
 384 +{
 385 +       char *s;
 386 +       var *v;
 387 +
 388 +       if (!includes)
 389 +               includes = hash_init();
 390 +
 391 +       /* find out if the file has been included already */
 392 +       v = findvar(includes, filename);
 393 +       if (istrue(v))
 394 +               return;
 395 +       setvar_s(v, "1");
 396 +
 397 +       /* read include file */
 398 +       s = get_file(filename);
 399 +       if (!s) {
 400 +               fprintf(stderr, "Could not open file.\n");
 401 +               return;
 402 +       }
 403 +       parse_include(s+1);
 404 +       free(s);
 405 +}
 406 +
 407 +static var *include(var *res, var *args, int nargs)
 408 +{
 409 +       char *s;
 410 +
 411 +       s = getvar_s(args);
 412 +       if (s && (strlen(s) > 0))
 413 +               include_file(s);
 414 +
 415 +       return res;
 416 +}
 417 +
 418 +/* parse an awk expression */
 419 +static var *parse_awk(char *str, var *tv)
 420 +{
 421 +       chain body;
 422 +       node *n;
 423 +
 424 +       memset(&body, 0, sizeof(body));
 425 +       pos = str;
 426 +       seq = &body;
 427 +
 428 +       /* end of expression, assume that there's going to be a free byte
 429 +        * at the end of the string that can be used for the ')' */
 430 +       strcat(str + strlen(str), "}");
 431 +       n = parse_expr(TC_GRPTERM);
 432 +       if (!n)
 433 +               return NULL;
 434 +
 435 +       return evaluate(n, tv);
 436 +}
 437 +
 438 +static inline void print_translate(char *s)
 439 +{
 440 +       char *str = s;
 441 +       if (lang_inuse)
 442 +               str = translate_line(s);
 443 +       fputs(str, stdout);
 444 +       fflush(stdout);
 445 +       if (lang_inuse)
 446 +               free(str);
 447 +}
 448 +
 449 +static void render_element(struct template_cb *tcb, struct template_element *e)
 450 +{
 451 +       var *v;
 452 +       char *s, *s2;
 453 +       int i;
 454 +
 455 +       if (!e || !e->var)
 456 +               return;
 457 +       lineno = e->line;
 458 +       switch (e->t) {
 459 +               case T_TEXT:
 460 +                       s = malloc(strlen(e->var) + 2);
 461 +                       strcpy(s, e->var);
 462 +                       print_translate(s);
 463 +                       free(s);
 464 +                       break;
 465 +               case T_CODE:
 466 +                       s = malloc(strlen(e->var) + 2);
 467 +                       strcpy(s, e->var);
 468 +                       v = nvalloc(1);
 469 +                       s2 = strdup(getvar_s(parse_awk(s, v)));
 470 +                       nvfree(v);
 471 +                       print_translate(s2);
 472 +                       free(s);
 473 +                       free(s2);
 474 +                       break;
 475 +               case T_IF:
 476 +                       s = malloc(strlen(e->var) + 2);
 477 +                       strcpy(s, e->var);
 478 +                       v = nvalloc(1);
 479 +                       i = istrue(parse_awk(s, v));
 480 +                       nvfree(v);
 481 +                       free(s);
 482 +
 483 +                       if (i)
 484 +                               execute_template(tcb, e->sub);
 485 +                       else if (e->sub2)
 486 +                               execute_template(tcb, e->sub2);
 487 +                       break;
 488 +               case T_FOR: {
 489 +                               v = newvar(e->var);
 490 +                               hashwalk_init(v, iamarray(findvar(vhash, e->in)));
 491 +                               while (hashwalk_next(v)) {
 492 +                                       execute_template(tcb, e->sub);
 493 +                               }
 494 +                               clrvar(v);
 495 +                       }
 496 +                       break;
 497 +               default:
 498 +                       break;
 499 +       }
 500 +}
 501 +
 502 +/* awk method render(), which opens a template file and processes all awk ssi calls */
 503 +static void render_file(char *filename)
 504 +{
 505 +       struct template_cb tcb;
 506 +       struct template_element *e;
 507 +       FILE *f;
 508 +       char *oldprg;
 509 +       int oldlnr;
 510 +
 511 +       if (!filename)
 512 +               return;
 513 +
 514 +       oldlnr = lineno;
 515 +       oldprg = programname;
 516 +       programname = filename;
 517 +
 518 +       f = fopen(filename, "r");
 519 +       if (!f)
 520 +               return;
 521 +
 522 +       memset(&tcb, 0, sizeof(tcb));
 523 +       tcb.handle_element = render_element;
 524 +       e = parse_template(&tcb, f);
 525 +       execute_template(&tcb, e);
 526 +       free_template(&tcb, e);
 527 +       fclose(f);
 528 +       programname = oldprg;
 529 +       lineno = oldlnr;
 530 +}
 531 +
 532 +static var *render(var *res, var *args, int nargs)
 533 +{
 534 +       char *s;
 535 +
 536 +       s = getvar_s(args);
 537 +       if (!s)
 538 +               return res;
 539 +
 540 +       render_file(s);
 541 +
 542 +       return res;
 543 +}
 544 +
 545 +/* Call render, but only if this function hasn't been called already */
 546 +static int layout_rendered = 0;
 547 +static var *render_layout(var *res, var *args, int nargs)
 548 +{
 549 +       if (layout_rendered)
 550 +               return res;
 551 +       layout_rendered = 1;
 552 +       return render(res, args, nargs);
 553 +}
 554 +
 555 +/* registers a global c function for the awk interpreter */
 556 +static void register_cfunc(char *name, awk_cfunc cfunc, int nargs)
 557 +{
 558 +       func *f;
 559 +
 560 +       f = newfunc(name);
 561 +       f->type = CFUNC;
 562 +       f->x.cfunc = cfunc;
 563 +       f->nargs = nargs;
 564 +}
 565 +
 566 +static void putvar(vartype type, char *name, char *value)
 567 +{
 568 +       if (type != FORM_VAR)
 569 +               return;
 570 +
 571 +       setvar_u(findvar(formvar, name), value);
 572 +}
 573 +
 574 +static char *cgi_getvar(char *name)
 575 +{
 576 +       if (!formvar) {
 577 +               formvar = hash_init();
 578 +               cgi_init(putvar);
 579 +       }
 580 +
 581 +       if (!formvar || !name)
 582 +               return NULL;
 583 +
 584 +       return getvar_s(findvar(formvar, name));
 585 +}
 586 +
 587 +/* function call for accessing cgi form variables */
 588 +static var *getvar(var *res, var *args, int nargs)
 589 +{
 590 +       char *s;
 591 +       char *svar;
 592 +
 593 +       s = getvar_s(args);
 594 +       if (!s)
 595 +               return res;
 596 +
 597 +       svar = cgi_getvar(s);
 598 +       if (!svar)
 599 +               return res;
 600 +
 601 +       setvar_u(res, svar);
 602 +
 603 +       return res;
 604 +}
 605 +
 606 +/* call an awk function without arguments by string reference */
 607 +static var *call(var *res, var *args, int nargs)
 608 +{
 609 +       char *s = getvar_s(args);
 610 +       func *f;
 611 +
 612 +       if (!s)
 613 +               goto done;
 614 +
 615 +       f = newfunc(s);
 616 +       if (f && f->type == AWKFUNC && f->x.body.first)
 617 +               return evaluate(f->x.body.first, res);
 618 +
 619 +done:
 620 +       return res;
 621 +}
 622 +
 623 +
 624 +static int run_awxscript(char *name)
 625 +{
 626 +       var tv, *layout, *action;
 627 +       char *tmp, *s = NULL;
 628 +
 629 +       zero_out_var(&tv);
 630 +       programname = name;
 631 +
 632 +       /* read the main controller source */
 633 +       s = get_file(programname);
 634 +       if (!s) {
 635 +               fprintf(stderr, "Could not open file\n");
 636 +               return 1;
 637 +       }
 638 +       parse_program(s+1);
 639 +       free(s);
 640 +
 641 +
 642 +       /* set some defaults for ACTION and LAYOUT, which will have special meaning */
 643 +       layout = newvar("LAYOUT");
 644 +       setvar_s(layout, "views/layout.ahtml");
 645 +
 646 +       /* run the BEGIN {} block */
 647 +       evaluate(beginseq.first, &tv);
 648 +
 649 +       action = newvar("ACTION");
 650 +       if (!(strlen(getvar_s(action)) > 0)) {
 651 +               tmp = cgi_getvar("action");
 652 +               if (!tmp || (strlen(tmp) <= 0))
 653 +                       tmp = strdup("default");
 654 +
 655 +               setvar_p(action, tmp);
 656 +       }
 657 +
 658 +       /* call the action (precedence: begin block override > cgi parameter > "default") */
 659 +       tmp = xmalloc(strlen(getvar_s(action)) + 7);
 660 +       sprintf(tmp, "handle_%s", getvar_s(action));
 661 +       setvar_s(action, tmp);
 662 +       call(&tv, action, 1);
 663 +       free(tmp);
 664 +
 665 +       /* render the selected layout, will do nothing if render_layout has been called from awk */
 666 +       render_layout(&tv, layout, 1);
 667 +
 668 +       return 0;
 669 +}
 670 +
 671 +
 672 +/* main awx processing function. called from awk_main() */
 673 +static int do_awx(int argc, char **argv)
 674 +{
 675 +       int ret = -1;
 676 +       var tv;
 677 +       int i, c;
 678 +       char **args = argv;
 679 +
 680 +       zero_out_var(&tv);
 681 +
 682 +       /* register awk C callbacks */
 683 +       register_cfunc("getvar", getvar, 1);
 684 +       register_cfunc("render", render, 1);
 685 +       register_cfunc("render_layout", render_layout, 1);
 686 +       register_cfunc("call", call, 1);
 687 +       register_cfunc("include", include, 1);
 688 +       register_cfunc("init_lang", init_lang, 1);
 689 +       register_cfunc("load_lang", load_lang, 1);
 690 +
 691 +       if (!is_awx)
 692 +               return 0;
 693 +
 694 +       /* fill in ARGV array */
 695 +       setvar_i(V[ARGC], argc + 1);
 696 +       setari_u(V[ARGV], 0, "awx");
 697 +       i = 0;
 698 +       while (*args)
 699 +               setari_u(V[ARGV], ++i, *args++);
 700 +
 701 +       while((c = getopt(argc, argv, "i:f:")) != EOF) {
 702 +               switch(c) {
 703 +                       case 'i':
 704 +                               programname = optarg;
 705 +                               include_file(optarg);
 706 +                               break;
 707 +                       case 'f':
 708 +                               ret = 0;
 709 +                               programname = optarg;
 710 +                               render_file(optarg);
 711 +                               goto done;
 712 +               }
 713 +       }
 714 +       argc -= optind;
 715 +       argv += optind;
 716 +
 717 +       if (argc < 1) {
 718 +               fprintf(stderr, "Invalid argument.\n");
 719 +               goto done;
 720 +       }
 721 +
 722 +       ret = run_awxscript(*argv);
 723 +
 724 +done:
 725 +       exit(ret);
 726 +}
 727 +
 728 +/* entry point for awx applet */
 729 +int awx_main(int argc, char **argv)
 730 +{
 731 +       is_awx = 1;
 732 +       return awk_main(argc, argv);
 733 +}
 734 +
 735 diff -urN bb.old/editors/awx_parser.h bb.dev/editors/awx_parser.h
 736 --- bb.old/editors/awx_parser.h 1970-01-01 01:00:00.000000000 +0100
 737 +++ bb.dev/editors/awx_parser.h 2007-05-20 22:30:31.380512280 +0200
 738 @@ -0,0 +1,38 @@
 739 +#ifndef __TEMPLATE_PARSER_H
 740 +#define __TEMPLATE_PARSER_H
 741 +
 742 +enum type {
 743 +       T_TEXT,
 744 +       T_FOR,
 745 +       T_IF,
 746 +       T_CODE
 747 +};
 748 +
 749 +struct template_element;
 750 +struct template_cb;
 751 +
 752 +struct template_cb {
 753 +       void *(*prepare_code)(struct template_element *);
 754 +       void (*handle_element)(struct template_cb *, struct template_element *);
 755 +       void (*free_code)(struct template_element *);
 756 +};
 757 +
 758 +struct template_element {
 759 +       enum type t;
 760 +       char *var;
 761 +       char *in;
 762 +       int line;
 763 +       void *priv;
 764 +       struct template_element *parent;
 765 +       struct template_element *sub;
 766 +       struct template_element *sub2;
 767 +       struct template_element *prev;
 768 +       struct template_element *next;
 769 +};
 770 +
 771 +
 772 +struct template_element *parse_template(struct template_cb *cb, FILE *in);
 773 +void execute_template(struct template_cb *cb, struct template_element *e);
 774 +void free_template(struct template_cb *cb, struct template_element *e);
 775 +
 776 +#endif
 777 diff -urN bb.old/editors/awx_parser.l bb.dev/editors/awx_parser.l
 778 --- bb.old/editors/awx_parser.l 1970-01-01 01:00:00.000000000 +0100
 779 +++ bb.dev/editors/awx_parser.l 2007-05-23 19:13:40.459655704 +0200
 780 @@ -0,0 +1,302 @@
 781 +%{
 782 +#include <stdio.h>
 783 +#include <string.h>
 784 +#include <stdlib.h>
 785 +#include "busybox.h"
 786 +#include "awx_parser.h"
 787 +
 788 +enum {
 789 +       S_INIT,
 790 +       S_TEXT,
 791 +       S_CODE,
 792 +       S_IF_START,
 793 +       S_FOR_START,
 794 +       S_FOR_IN,
 795 +       S_END,
 796 +       S_ELSE,
 797 +       S_EOF
 798 +};
 799 +int state;
 800 +
 801 +#undef DEBUG
 802 +#ifdef DEBUG
 803 +char *statestr[] = {
 804 +       [S_INIT] = "S_INIT",
 805 +       [S_TEXT] = "S_TEXT",
 806 +       [S_CODE] = "S_CODE",
 807 +       [S_IF_START] = "S_IF_START",
 808 +       [S_FOR_START] = "S_FOR_START",
 809 +       [S_FOR_IN] = "S_FOR_IN",
 810 +       [S_EOF] = "S_EOF"
 811 +};
 812 +
 813 +char *typestr[] = {
 814 +       [T_TEXT] = "T_TEXT",
 815 +       [T_FOR] = "T_FOR",
 816 +       [T_IF] = "T_IF",
 817 +       [T_CODE] = "T_CODE"
 818 +};
 819 +#endif
 820 +
 821 +static struct template_cb *parse_cb;
 822 +static struct template_element *cur, *head;
 823 +static char *textbuf;
 824 +static unsigned int buflen;
 825 +static unsigned int buf_offset;
 826 +static int _lnr = 0;
 827 +
 828 +static void buf_realloc(void)
 829 +{
 830 +       buflen *= 2;
 831 +       textbuf = xrealloc(textbuf, buflen);
 832 +}
 833 +
 834 +static void parse_error(char *str)
 835 +{
 836 +       fprintf(stderr, "Parse error%s%s\n", (str ? ": " : "!"), (str ?: ""));
 837 +       exit(255);
 838 +}
 839 +
 840 +
 841 +static struct template_element *new_template_element(struct template_element *parent)
 842 +{
 843 +       struct template_element *ptr;
 844 +
 845 +       ptr = xzalloc(sizeof(struct template_element));
 846 +       ptr->parent = parent;
 847 +       return ptr;
 848 +}
 849 +
 850 +static inline void next_template_element(void)
 851 +{
 852 +       cur->next = new_template_element(cur->parent);
 853 +       cur->next->prev = cur;
 854 +       cur = cur->next;
 855 +}
 856 +
 857 +static void addtext(char *text)
 858 +{
 859 +       while(buf_offset + strlen(text) + 1 > buflen)
 860 +               buf_realloc();
 861 +
 862 +       buf_offset += sprintf(&textbuf[buf_offset], "%s", text);
 863 +}
 864 +
 865 +static void set_state(int newstate)
 866 +{
 867 +       char *ptr;
 868 +
 869 +#ifdef DEBUG
 870 +       static int _rec = 0;
 871 +       fprintf(stderr, "DEBUG(%d): %s => %s: %s\n", _rec, statestr[state], statestr[newstate], textbuf);
 872 +#endif
 873 +       ptr = xstrdup(textbuf);
 874 +       if (state == S_FOR_IN)
 875 +               cur->in = ptr;
 876 +       else
 877 +               cur->var = ptr;
 878 +
 879 +       if (parse_cb && (cur->t == T_CODE) && parse_cb->prepare_code)
 880 +               parse_cb->prepare_code(cur);
 881 +
 882 +       buf_offset = 0;
 883 +       *textbuf = 0;
 884 +
 885 +       switch(newstate) {
 886 +#if 0
 887 +               case S_EOF:
 888 +                       if (cur->parent)
 889 +                               parse_error();
 890 +                       break;
 891 +#endif
 892 +               case S_FOR_START:
 893 +                       if (ptr || !cur->prev)
 894 +                               next_template_element();
 895 +                       cur->t = T_FOR;
 896 +                       break;
 897 +               case S_IF_START:
 898 +                       if (ptr || !cur->prev)
 899 +                               next_template_element();
 900 +                       cur->t = T_IF;
 901 +                       break;
 902 +               case S_ELSE:
 903 +                       cur = cur->parent;
 904 +                       if (!cur)
 905 +                               parse_error("'@else' without parent element");
 906 +                       cur->sub2 = new_template_element(cur);
 907 +                       cur = cur->sub2;
 908 +                       newstate = S_TEXT;
 909 +                       break;
 910 +               case S_END:
 911 +#ifdef DEBUG
 912 +                       _rec--;
 913 +#endif
 914 +                       cur = cur->parent;
 915 +                       if (!cur)
 916 +                               parse_error("'@end' without parent element");
 917 +
 918 +                       next_template_element();
 919 +                       cur->t = T_TEXT;
 920 +                       newstate = S_TEXT;
 921 +                       break;
 922 +               case S_TEXT:
 923 +                       switch (cur->t) {
 924 +                               case T_CODE:
 925 +                                       next_template_element();
 926 +                                       break;
 927 +                               case T_IF:
 928 +                               case T_FOR:
 929 +#ifdef DEBUG
 930 +                                       _rec++;
 931 +#endif
 932 +                                       cur->sub = new_template_element(cur);
 933 +                                       cur = cur->sub;
 934 +                                       break;
 935 +                               default:
 936 +                                       break;
 937 +                       }
 938 +                       cur->t = T_TEXT;
 939 +                       break;
 940 +               case S_CODE:
 941 +                       if (ptr || !cur->prev)
 942 +                               next_template_element();
 943 +                       cur->t = T_CODE;
 944 +                       break;
 945 +               default:
 946 +                       break;
 947 +       }
 948 +       cur->line = _lnr;
 949 +       state = newstate;
 950 +}
 951 +
 952 +%}
 953 +
 954 +%%
 955 +"<%"[ \n\t]*"@if"[ \n\t]+ {
 956 +       if (state == S_TEXT)
 957 +               set_state(S_IF_START);
 958 +       else
 959 +               REJECT;
 960 +}
 961 +
 962 +"<%"[ \n\t]*"@for"[ \n\t]+ {
 963 +       if (state == S_TEXT)
 964 +               set_state(S_FOR_START);
 965 +       else
 966 +               REJECT;
 967 +}
 968 +
 969 +[ \n\t]+"in"[ \n\t]+ {
 970 +       if (state == S_FOR_START)
 971 +               set_state(S_FOR_IN);
 972 +       else
 973 +               REJECT;
 974 +}
 975 +
 976 +"<%"[ \n\t]*"@end"[ \n\t]*%> {
 977 +       if (state != S_TEXT)
 978 +               REJECT;
 979 +       set_state(S_END);
 980 +}
 981 +
 982 +"<%"[ \n\t]*"@else"[ \n\t]*%> {
 983 +       if (state != S_TEXT)
 984 +               REJECT;
 985 +       set_state(S_ELSE);
 986 +}
 987 +
 988 +"<%" {
 989 +       if (state != S_TEXT)
 990 +               parse_error("'<%' cannot be nested");
 991 +       set_state(S_CODE);
 992 +}
 993 +
 994 +[ \n\t]"%>" {
 995 +       if (state == S_TEXT)
 996 +               REJECT;
 997 +       set_state(S_TEXT);
 998 +}
 999 +
1000 +\n {
1001 +       _lnr++;
1002 +       if (state == S_TEXT)
1003 +               addtext(yytext);
1004 +}
1005 +.      {
1006 +       addtext(yytext);
1007 +}
1008 +
1009 +
1010 +%%
1011 +
1012 +
1013 +void execute_template(struct template_cb *cb, struct template_element *e)
1014 +{
1015 +       static int rec = 0;
1016 +
1017 +       while (e) {
1018 +#ifdef DEBUG
1019 +               fprintf(stderr, "DEBUG: execute(%d)\t%s\n", rec, typestr[e->t]);
1020 +#endif
1021 +               rec++;
1022 +               if (cb->handle_element)
1023 +                       cb->handle_element(cb, e);
1024 +               rec--;
1025 +               e = e->next;
1026 +       }
1027 +}
1028 +
1029 +int yywrap()
1030 +{
1031 +       set_state(S_EOF);
1032 +       return 1;
1033 +}
1034 +
1035 +struct template_element *parse_template(struct template_cb *cb, FILE *in)
1036 +{
1037 +       _lnr = 1;
1038 +       buf_offset = 0;
1039 +       state = S_TEXT;
1040 +       parse_cb = cb;
1041 +
1042 +       buflen = 4096;
1043 +       textbuf = xzalloc(buflen);
1044 +
1045 +       head = xzalloc(sizeof(struct template_element));
1046 +       head->t = T_TEXT;
1047 +       cur = head;
1048 +
1049 +       yyin = in;
1050 +       yylex();
1051 +
1052 +       return head;
1053 +}
1054 +
1055 +void free_template(struct template_cb *cb, struct template_element *e)
1056 +{
1057 +       struct template_element *next;
1058 +       return;
1059 +       if (!e)
1060 +               return;
1061 +
1062 +       switch (e->t) {
1063 +               case T_CODE:
1064 +                       if (cb->free_code)
1065 +                               cb->free_code(e);
1066 +                       break;
1067 +               case T_FOR:
1068 +               case T_IF:
1069 +                       free_template(cb, e->sub);
1070 +                       break;
1071 +               default:
1072 +                       break;
1073 +       }
1074 +       if (e->var)
1075 +               free(e->var);
1076 +       if (e->in)
1077 +               free(e->in);
1078 +
1079 +       next = e->next;
1080 +       free(e);
1081 +       return free_template(cb, next);
1082 +}
1083 diff -urN bb.old/editors/Config.in bb.dev/editors/Config.in
1084 --- bb.old/editors/Config.in    2007-05-20 04:17:05.003197632 +0200
1085 +++ bb.dev/editors/Config.in    2007-05-20 22:30:31.380512280 +0200
1086 @@ -12,6 +12,13 @@
1087           Awk is used as a pattern scanning and processing language.  This is
1088           the BusyBox implementation of that programming language.
1089
1090 +config AWX
1091 +       bool "Enable awx (awk web extension)"
1092 +       default n
1093 +       depends on AWK
1094 +       help
1095 +         awx - awk web extension
1096 +
1097  config FEATURE_AWK_MATH
1098         bool "Enable math functions (requires libm)"
1099         default y
1100 diff -urN bb.old/editors/Kbuild bb.dev/editors/Kbuild
1101 --- bb.old/editors/Kbuild       2007-03-18 17:59:37.000000000 +0100
1102 +++ bb.dev/editors/Kbuild       2007-05-20 22:30:31.381512128 +0200
1103 @@ -10,3 +10,12 @@
1104  lib-$(CONFIG_PATCH)     += patch.o
1105  lib-$(CONFIG_SED)       += sed.o
1106  lib-$(CONFIG_VI)        += vi.o
1107 +lib-$(CONFIG_AWX)              += awx_parser.o
1108 +
1109 +editors/awx_parser.c: editors/awx_parser.l editors/awx_parser.h
1110 +       @flex $<
1111 +       @mv lex.yy.c $@
1112 +
1113 +editors/awx_parser.o: editors/awx_parser.c FORCE
1114 +       $(call cmd,force_checksrc)
1115 +       $(call if_changed_rule,cc_o_c)
1116 diff -urN bb.old/include/applets.h bb.dev/include/applets.h
1117 --- bb.old/include/applets.h    2007-05-20 04:17:05.003197632 +0200
1118 +++ bb.dev/include/applets.h    2007-05-20 22:30:31.381512128 +0200
1119 @@ -60,6 +60,7 @@
1120  USE_ARPING(APPLET(arping, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
1121  USE_ASH(APPLET_NOUSAGE(ash, ash, _BB_DIR_BIN, _BB_SUID_NEVER))
1122  USE_AWK(APPLET(awk, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
1123 +USE_AWX(APPLET_NOUSAGE(awx, awx, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
1124  USE_BASENAME(APPLET(basename, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
1125  USE_BBCONFIG(APPLET(bbconfig, _BB_DIR_BIN, _BB_SUID_NEVER))
1126  //USE_BBSH(APPLET(bbsh, _BB_DIR_BIN, _BB_SUID_NEVER))
1127 diff -urN bb.old/include/cgi.h bb.dev/include/cgi.h
1128 --- bb.old/include/cgi.h        1970-01-01 01:00:00.000000000 +0100
1129 +++ bb.dev/include/cgi.h        2007-05-20 22:30:31.381512128 +0200
1130 @@ -0,0 +1,8 @@
1131 +#ifndef CGI_H
1132 +#define CGI_H
1133 +
1134 +typedef enum { FORM_VAR, COOKIE_VAR } vartype;
1135 +typedef void (*var_handler) (vartype, char *, char *);
1136 +int cgi_init(var_handler);
1137 +
1138 +#endif
1139 diff -urN bb.old/libbb/cgi.c bb.dev/libbb/cgi.c
1140 --- bb.old/libbb/cgi.c  1970-01-01 01:00:00.000000000 +0100
1141 +++ bb.dev/libbb/cgi.c  2007-05-20 22:30:31.382511976 +0200
1142 @@ -0,0 +1,457 @@
1143 +/* --------------------------------------------------------------------------
1144 + * functions for processing cgi form data
1145 + * Copyright (C) 2007 by Felix Fietkau <nbd@openwrt.org>
1146 + *
1147 + * parts taken from the core of haserl.cgi - a poor-man's php for embedded/lightweight environments
1148 + * $Id: haserl.c,v 1.13 2004/11/10 17:59:35 nangel Exp $
1149 + * Copyright (c) 2003,2004    Nathan Angelacos (nangel@users.sourceforge.net)
1150 + *
1151 + * This program is free software; you can redistribute it and/or modify
1152 + * it under the terms of the GNU General Public License as published by
1153 + * the Free Software Foundation; either version 2 of the License, or
1154 + * (at your option) any later version.
1155 + *
1156 + * This program is distributed in the hope that it will be useful,
1157 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
1158 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
1159 + * General Public License for more details.
1160 + *
1161 + * You should have received a copy of the GNU General Public License
1162 + * along with this program; if not, write to the Free Software
1163 + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
1164 + *
1165 + * -----
1166 + * The x2c() and unescape_url() routines were taken from
1167 + *  http://www.jmarshall.com/easy/cgi/getcgi.c.txt
1168 + *
1169 + * The comments in that text file state:
1170 + *
1171 + ***  Written in 1996 by James Marshall, james@jmarshall.com, except
1172 + ***  that the x2c() and unescape_url() routines were lifted directly
1173 + ***  from NCSA's sample program util.c, packaged with their HTTPD.
1174 + ***     For the latest, see http://www.jmarshall.com/easy/cgi/
1175 + * -----
1176 + *
1177 + ------------------------------------------------------------------------- */
1178 +
1179 +#include <stdio.h>
1180 +#include <unistd.h>
1181 +#include <time.h>
1182 +#include <sys/mman.h>
1183 +#include <sys/types.h>
1184 +#include <sys/wait.h>
1185 +#include <sys/stat.h>
1186 +#include <sys/fcntl.h>
1187 +#include <stdlib.h>
1188 +#include <string.h>
1189 +#include <cgi.h>
1190 +
1191 +#ifndef MAX_UPLOAD_KB
1192 +#define MAX_UPLOAD_KB 2048
1193 +#endif
1194 +#define TEMPDIR "/tmp"
1195 +
1196 +static int global_upload_size = 0;
1197 +static int ReadMimeEncodedInput(char *qs);
1198 +static var_handler do_putvar = NULL;
1199 +
1200 +/*
1201 + * Convert 2 char hex string into char it represents
1202 + * (from http://www.jmarshall.com/easy/cgi)
1203 + */
1204 +static char x2c (char *what) {
1205 +       char digit;
1206 +
1207 +       digit=(what[0] >= 'A' ? ((what[0] & 0xdf) - 'A')+10 : (what[0] - '0'));
1208 +       digit *=16;
1209 +       digit+=(what[1] >= 'A' ? ((what[1] & 0xdf) - 'A')+10 : (what[1] - '0'));
1210 +
1211 +       return digit;
1212 +}
1213 +
1214 +/*
1215 + * unsescape %xx to the characters they represent
1216 + */
1217 +
1218 +static void unescape_url (char *url) {
1219 +       int  i,j;
1220 +
1221 +       for (i=0, j=0; url[j]; ++i, ++j) {
1222 +               if ((url[i] = url[j]) == '%') {
1223 +                       url[i] = x2c(&url[j+1]);
1224 +                       j+=2;
1225 +               }
1226 +       }
1227 +       url[i]='\0';
1228 +}
1229 +
1230 +static inline void put_var(vartype type, char *var)
1231 +{
1232 +       char *val;
1233 +
1234 +       if (!do_putvar)
1235 +               return;
1236 +
1237 +       val = strchr(var, '=');
1238 +       if (!val)
1239 +               return;
1240 +
1241 +       *val = 0;
1242 +       val++;
1243 +       do_putvar(type, var, val);
1244 +
1245 +       return;
1246 +}
1247 +
1248 +
1249 +/* CookieVars ()
1250 + * if HTTP_COOKIE is passed as an environment variable,
1251 + * attempt to parse its values into environment variables
1252 + */
1253 +static void CookieVars (void)
1254 +{
1255 +       char *qs;
1256 +       char *token;
1257 +
1258 +       if (getenv("HTTP_COOKIE") != NULL)
1259 +               qs=strdup(getenv("HTTP_COOKIE"));
1260 +       else
1261 +               return;
1262 +
1263 +       /** split on; to extract name value pairs */
1264 +       token=strtok(qs, ";");
1265 +       while (token) {
1266 +               // skip leading spaces
1267 +               while ( token[0] == ' ' )
1268 +                       token++;
1269 +
1270 +               put_var(COOKIE_VAR, token);
1271 +
1272 +               token = strtok(NULL, ";");
1273 +       }
1274 +       free (qs);
1275 +}
1276 +
1277 +/*
1278 + * Read cgi variables from query string, and put in environment
1279 + */
1280 +static int ReadCGIQueryString (void)
1281 +{
1282 +       char *qs;
1283 +       char *token;
1284 +       int i;
1285 +
1286 +       if (getenv("QUERY_STRING") != NULL)
1287 +               qs=strdup(getenv("QUERY_STRING"));
1288 +       else
1289 +               return 0;
1290 +
1291 +       /* change plusses into spaces */
1292 +       for (i=0; qs[i]; i++ ) { if (qs[i] == '+' ) { qs[i] = ' ';} };
1293 +
1294 +       /** split on & and ; to extract name value pairs */
1295 +
1296 +       token=strtok(qs, "&;");
1297 +       while (token) {
1298 +               unescape_url(token);
1299 +               put_var(FORM_VAR, token);
1300 +               token=strtok(NULL, "&;");
1301 +       }
1302 +       free(qs);
1303 +
1304 +       return 0;
1305 +}
1306 +
1307 +
1308 +/*
1309 + * Read cgi variables from stdin (for POST queries)
1310 + * (oh... and if its mime-encoded file upload, we save the
1311 + * file to /tmp; and return the name of the tmp file
1312 + * the cgi script is responsible for disposing of the tmp file
1313 + */
1314 +
1315 +static int ReadCGIPOSTValues (void) {
1316 +       char *qs;
1317 +       int content_length;
1318 +       int i;
1319 +       char *token;
1320 +
1321 +
1322 +       if (getenv("CONTENT_LENGTH") == NULL)
1323 +               return(-1);
1324 +       else
1325 +               content_length = atoi(getenv("CONTENT_LENGTH"));
1326 +
1327 +       /* protect ourselves from 20GB file uploads */
1328 +       if (content_length > MAX_UPLOAD_KB * 1024 ) {
1329 +               /* But we need to finish reading the content */
1330 +               while ( fread( &i, sizeof(int), 1, stdin) == 1 );
1331 +               return -1;
1332 +       }
1333 +
1334 +       if (!(qs=malloc(content_length+1)))
1335 +               return -1;
1336 +
1337 +       /* set the buffer to null, so that a browser messing with less
1338 +          data than content_length won't buffer underrun us */
1339 +       memset(qs, 0 ,content_length+1);
1340 +
1341 +       if ((!fread(qs,content_length,1,stdin) &&
1342 +               (content_length > 0)
1343 +               && !feof(stdin))) {
1344 +
1345 +               free(qs);
1346 +               return -1;
1347 +       }
1348 +
1349 +       if (getenv("CONTENT_TYPE") && (strncasecmp(getenv("CONTENT_TYPE"), "multipart/form-data", 19) == 0)) {
1350 +               /* This is a mime request, we need to go to the mime handler */
1351 +               i=ReadMimeEncodedInput(qs);
1352 +               free(qs);
1353 +
1354 +               return i;
1355 +       }
1356 +
1357 +       /* change plusses into spaces */
1358 +       for (i=0; qs[i]; i++ ) { if (qs[i] == '+' ) { qs[i] = ' ';} };
1359 +
1360 +       /** split on & and ; to extract name value pairs */
1361 +       token=strtok(qs, "&;");
1362 +       while (token) {
1363 +               unescape_url(token);
1364 +               put_var(FORM_VAR, token);
1365 +               token=strtok(NULL, "&;");
1366 +       }
1367 +
1368 +       free(qs);
1369 +
1370 +       return 0;
1371 +}
1372 +
1373 +/*
1374 + *  LineToStr - Scans char and replaces the first "\n" with a "\0";
1375 + *  If it finds a "\r", it does that to; (fix DOS brokennes) returns
1376 + *  the length of the string;
1377 + */
1378 +static int LineToStr (char *string, size_t max) {
1379 +       size_t offset=0;
1380 +
1381 +       while ((offset < max) && (string[offset] != '\n') && (string[offset] != '\r'))
1382 +               offset++;
1383 +
1384 +       if (string[offset] == '\r') {
1385 +               string[offset]='\0';
1386 +               offset++;
1387 +       }
1388 +       if (string[offset] == '\n') {
1389 +               string[offset]='\0';
1390 +               offset++;
1391 +       }
1392 +
1393 +       return offset;
1394 +}
1395 +
1396 +
1397 +/*
1398 + * ReadMimeEncodedInput - handles things that are mime encoded
1399 + * takes a pointer to the input; returns 0 on success
1400 + */
1401 +
1402 +static int ReadMimeEncodedInput(char *qs)
1403 +{
1404 +       char    *boundary;
1405 +       char    *ct;
1406 +       int     i;
1407 +       int     datastart;
1408 +       size_t  cl;
1409 +       size_t  offset;
1410 +       char    *envname;
1411 +       char    *filename;
1412 +       char    *ptr;
1413 +       int     line;
1414 +       char    tmpname[] = TEMPDIR "/XXXXXX";
1415 +       int     fd;
1416 +       /* we should only get here if the content type was set. Segfaults happen
1417 +          if Content_Type is null */
1418 +
1419 +       if (getenv("CONTENT_LENGTH") == NULL)
1420 +               /* No content length?! */
1421 +               return(-1);
1422 +
1423 +       cl=atoi(getenv("CONTENT_LENGTH"));
1424 +
1425 +       /* we do this 'cause we can't mess with the real env. variable - it would
1426 +        * overwrite the environment - I tried.
1427 +        */
1428 +       i=strlen(getenv("CONTENT_TYPE"))+1;
1429 +       ct=malloc(i);
1430 +       if (ct)
1431 +               memcpy(ct, getenv("CONTENT_TYPE"), i);
1432 +       else
1433 +               return(-1);
1434 +
1435 +       i=(int) NULL;
1436 +       if (ct != NULL) {
1437 +               while (i < strlen(ct) && (strncmp("boundary=", &ct[i], 9) != 0))
1438 +                       i++;
1439 +       }
1440 +       if (i == strlen(ct)) {
1441 +               /* no boundary informaiton found */
1442 +               free(ct);
1443 +               return -1;
1444 +       }
1445 +       boundary=&ct[i+7];
1446 +       /* add two leading -- to the boundary */
1447 +       boundary[0]='-';
1448 +       boundary[1]='-';
1449 +
1450 +       /* begin the big loop.  Look for:
1451 +               --boundary
1452 +               Content-Disposition: form-data;  name="......."
1453 +               ....
1454 +               <blank line>
1455 +               content
1456 +               --boundary
1457 +               Content-Disposition: form-data; name="....." filename="....."
1458 +               ...
1459 +               <blank line>
1460 +               --boundary--
1461 +               eof
1462 +       */
1463 +
1464 +       offset=0;
1465 +       while (offset < cl) {
1466 +               /* first look for boundary */
1467 +               while ((offset < cl) && (memcmp(&qs[offset], boundary, strlen(boundary))))
1468 +                       offset++;
1469 +
1470 +               /* if we got here and we ran off the end, its an error          */
1471 +               if (offset >= cl) {
1472 +                       free(ct);
1473 +                       return -1;
1474 +               }
1475 +
1476 +               /* if the two characters following the boundary are --,         */
1477 +               /* then we are at the end, exit                                 */
1478 +               if (memcmp(&qs[offset+strlen(boundary)], "--", 2) == 0) {
1479 +                       offset+=2;
1480 +                       break;
1481 +               }
1482 +               /* find where the offset should be */
1483 +               line=LineToStr(&qs[offset], cl-offset);
1484 +               offset+=line;
1485 +
1486 +               /* Now we're going to look for content-disposition              */
1487 +               line=LineToStr(&qs[offset], cl-offset);
1488 +               if (strncasecmp(&qs[offset], "Content-Disposition", 19) != 0) {
1489 +                       /* hmm... content disposition was not where we expected it */
1490 +                       free(ct);
1491 +                       return -1;
1492 +               }
1493 +               /* Found it, so let's go find "name="                           */
1494 +               if (!(envname=strstr(&qs[offset], "name="))) {
1495 +                       /* now name= is missing?!                               */
1496 +                       free(ct);
1497 +                       return(-1);
1498 +               } else
1499 +                       envname+=6;
1500 +
1501 +               /* is there a filename tag?                                     */
1502 +               if ((filename=strstr(&qs[offset], "filename="))!= NULL)
1503 +                       filename+=10;
1504 +               else
1505 +                       filename=NULL;
1506 +
1507 +               /* make envname and filename ASCIIZ                             */
1508 +               for (i=0; (envname[i] != '"') && (envname[i] != '\0'); i++);
1509 +
1510 +               envname[i] = '\0';
1511 +               if (filename) {
1512 +                       for (i=0; (filename[i] != '"') && (filename[i] != '\0'); i++);
1513 +                       filename[i] = '\0';
1514 +               }
1515 +               offset+=line;
1516 +
1517 +               /* Ok, by some miracle, we have the name; let's skip till we    */
1518 +               /* come to a blank line                                         */
1519 +               line=LineToStr(&qs[offset], cl-offset);
1520 +               while (strlen(&qs[offset]) > 1) {
1521 +                       offset+=line;
1522 +                       line=LineToStr(&qs[offset], cl-offset);
1523 +               }
1524 +               offset+=line;
1525 +               datastart=offset;
1526 +               /* And we go back to looking for a boundary */
1527 +               while ((offset < cl) && (memcmp(&qs[offset], boundary, strlen(boundary))))
1528 +                       offset++;
1529 +
1530 +               /* strip [cr] lf */
1531 +               if ((qs[offset-1] == '\n') && (qs[offset-2] == '\r'))
1532 +                       offset-=2;
1533 +               else
1534 +                       offset-=1;
1535 +
1536 +               qs[offset]=0;
1537 +
1538 +               /* ok, at this point, we know where the name is, and we know    */
1539 +               /* where the content is... we have to do one of two things      */
1540 +               /* based on whether its a file or not                           */
1541 +               if (filename==NULL) { /* its not a file, so its easy            */
1542 +                       /* just jam the content after the name          */
1543 +                       memcpy(&envname[strlen(envname)+1], &qs[datastart], offset-datastart+1);
1544 +                       envname[strlen(envname)]='=';
1545 +                       put_var(FORM_VAR, envname);
1546 +               } else {        /* handle the fileupload case           */
1547 +                       if (offset-datastart) {  /* only if they uploaded */
1548 +                               if ( global_upload_size == 0 ) {
1549 +                                       return -1;
1550 +                               }
1551 +                               /*  stuff in the filename */
1552 +                               ptr= calloc ( sizeof (char), strlen(envname)+strlen(filename)+2+5 );
1553 +                               sprintf (ptr, "%s_name=%s", envname, filename);
1554 +                               put_var(FORM_VAR, ptr);
1555 +                               free(ptr);
1556 +
1557 +                               fd=mkstemp(tmpname);
1558 +
1559 +                               if (fd == -1)
1560 +                                       return(-1);
1561 +
1562 +                               write(fd, &qs[datastart], offset-datastart);
1563 +                               close(fd);
1564 +                               ptr= calloc (sizeof(char), strlen(envname)+strlen(tmpname)+2);
1565 +                               sprintf (ptr, "%s=%s", envname, tmpname);
1566 +                               put_var(FORM_VAR, ptr);
1567 +                               free(ptr);
1568 +                       }
1569 +               }
1570 +       }
1571 +       free(ct);
1572 +       return 0;
1573 +}
1574 +
1575 +
1576 +/*-------------------------------------------------------------------------
1577 + *
1578 + * Main
1579 + *
1580 + *------------------------------------------------------------------------*/
1581 +
1582 +int cgi_init(var_handler putvar_handler)
1583 +{
1584 +       int     retval = 0;
1585 +
1586 +       do_putvar = putvar_handler;
1587 +
1588 +       /* Read the current environment into our chain */
1589 +       CookieVars();
1590 +       if (getenv("REQUEST_METHOD")) {
1591 +               if (strcasecmp(getenv("REQUEST_METHOD"), "GET") == 0)
1592 +                       retval = ReadCGIQueryString();
1593 +
1594 +               if (strcasecmp(getenv("REQUEST_METHOD"), "POST") == 0)
1595 +                       retval = ReadCGIPOSTValues();
1596 +       }
1597 +
1598 +       return retval;
1599 +}
1600 diff -urN bb.old/libbb/Kbuild bb.dev/libbb/Kbuild
1601 --- bb.old/libbb/Kbuild 2007-05-20 04:17:05.004197480 +0200
1602 +++ bb.dev/libbb/Kbuild 2007-05-20 22:30:31.382511976 +0200
1603 @@ -118,3 +118,6 @@
1604  lib-$(CONFIG_MDEV) += xregcomp.o
1605  lib-$(CONFIG_LESS) += xregcomp.o
1606  lib-$(CONFIG_DEVFSD) += xregcomp.o
1607 +
1608 +lib-$(CONFIG_AWX) += cgi.o
1609 +