package/busybox/patches/920-awx.patch

   1 diff -purN 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 @@ typedef struct chain_s {
  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 @@ static void parse_program(char *p)
  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 @@ static void parse_program(char *p)
  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 @@ static var *evaluate(node *op, var *res)
  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 @@ static var *evaluate(node *op, var *res)
  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 @@ static rstream *next_input_file(void)
  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 @@ int awk_main(int argc, char **argv)
  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 -purN 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        2007-05-20 22:57:59.666934656 +0200
 101 @@ -0,0 +1,630 @@
 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, *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 = backlog;
 174 +                       backlog = xstrdup(l);
 175 +                       if (p2)
 176 +                               free(p2);
 177 +                       tr_abort = 1;
 178 +                       break;
 179 +               }
 180 +
 181 +               *p = 0;
 182 +               *p2 = 0;
 183 +               len += strlen((tok[_pos++] = l));
 184 +               len += strlen((tok[_pos++] = translate_lookup(p + strlen(TR_START))));
 185 +
 186 +               l = p2;
 187 +               l += strlen(TR_END);
 188 +       }
 189 +       len++;
 190 +
 191 +       p = xmalloc(len + 1);
 192 +       *p = 0;
 193 +       res = p;
 194 +       for (i = 0; i < _pos; i++) {
 195 +               strcat(p, tok[i]);
 196 +               p += strlen(tok[i]);
 197 +       }
 198 +       if (!tr_abort && backlog) {
 199 +               free(backlog);
 200 +               backlog = NULL;
 201 +       }
 202 +
 203 +       return res;
 204 +}
 205 +
 206 +/* hook for intercepting awk's use of puts. used for running all printed strings
 207 + * through the translation system */
 208 +static inline int fputs_hook (__const char *__restrict __s, FILE *__restrict __stream)
 209 +{
 210 +       if (lang_inuse && (__stream == stdout)) {
 211 +               int ret;
 212 +               char *str;
 213 +
 214 +               str = translate_line((char *) __s);
 215 +               ret = fputs(str, __stream);
 216 +               free(str);
 217 +
 218 +               return ret;
 219 +       }
 220 +
 221 +       return fputs(__s, __stream);
 222 +}
 223 +
 224 +static var *init_lang(var *res, var *args, int nargs)
 225 +{
 226 +       if (!lstr)
 227 +               lstr = hash_init();
 228 +
 229 +       lang_inuse = 1;
 230 +       return res;
 231 +}
 232 +
 233 +
 234 +/* load and parse language file */
 235 +static void load_lang_file(char *file)
 236 +{
 237 +       FILE *f;
 238 +       char *b, *name, *value;
 239 +       char buf1[LINE_BUF];
 240 +
 241 +       if ((f = fopen(file, "r")) == NULL)
 242 +               return;
 243 +
 244 +       while (!feof(f) && (fgets(buf1, LINE_BUF - 1, f) != NULL)) {
 245 +               b = buf1;
 246 +               if (*b == '#')
 247 +                       continue; /* skip comments */
 248 +
 249 +               while (isspace(*b))
 250 +                       b++; /* skip leading spaces */
 251 +               if (!*b)
 252 +                       continue;
 253 +
 254 +               name = b;
 255 +               if ((b = strstr(name, "=>")) == NULL)
 256 +                       continue; /* separator not found */
 257 +
 258 +               value = b + 2;
 259 +               if (!*value)
 260 +                       continue;
 261 +
 262 +               *b = 0;
 263 +               for (b--; isspace(*b); b--)
 264 +                       *b = 0; /* remove trailing spaces */
 265 +
 266 +               while (isspace(*value))
 267 +                       value++; /* skip leading spaces */
 268 +
 269 +               for (b = value + strlen(value) - 1; isspace(*b); b--)
 270 +                       *b = 0; /* remove trailing spaces */
 271 +
 272 +               if (!*value)
 273 +                       continue;
 274 +
 275 +               setvar_s(findvar(lstr,name), value);
 276 +       }
 277 +
 278 +       fclose(f);
 279 +}
 280 +
 281 +static var *load_lang(var *res, var *args, int nargs)
 282 +{
 283 +       const char *langfmt = "/usr/lib/webif/lang/%s.txt";
 284 +       char lbuf[LINE_BUF];
 285 +       char *lang;
 286 +
 287 +       if (!lang_inuse)
 288 +               init_lang(res, args, nargs);
 289 +
 290 +       lang = getvar_s(args);
 291 +       if (!lang || !strcmp(lang, ""))
 292 +               return res;
 293 +
 294 +       sprintf(lbuf, langfmt, lang);
 295 +       load_lang_file(lbuf);
 296 +
 297 +       return res;
 298 +}
 299 +
 300 +/* read the contents of an entire file */
 301 +static char *get_file(char *fname)
 302 +{
 303 +       FILE *F;
 304 +       char *s = NULL;
 305 +       int i, j, flen;
 306 +
 307 +       F = fopen(fname, "r");
 308 +       if (!F) {
 309 +               return NULL;
 310 +       }
 311 +
 312 +       if (fseek(F, 0, SEEK_END) == 0) {
 313 +               flen = ftell(F);
 314 +               s = (char *)xmalloc(flen+4);
 315 +               fseek(F, 0, SEEK_SET);
 316 +               i = 1 + fread(s+1, 1, flen, F);
 317 +       } else {
 318 +               for (i=j=1; j>0; i+=j) {
 319 +                       s = (char *)xrealloc(s, i+4096);
 320 +                       j = fread(s+i, 1, 4094, F);
 321 +               }
 322 +       }
 323 +
 324 +       s[i] = '\0';
 325 +       fclose(F);
 326 +       return s;
 327 +}
 328 +
 329 +
 330 +/* parse_include():
 331 + *
 332 + * taken from parse_program from awk.c
 333 + * END{} is not parsed here, and BEGIN{} is executed immediately
 334 + */
 335 +static void parse_include(char *p)
 336 +{
 337 +       uint32_t tclass;
 338 +       chain *initseq = NULL;
 339 +       chain tmp;
 340 +       func *f;
 341 +       var *v, *tv;
 342 +
 343 +       tv = nvalloc(1);
 344 +       memset(&tmp, 0, sizeof(tmp));
 345 +       pos = p;
 346 +       t.lineno = 1;
 347 +       while ((tclass = next_token(TC_EOF | TC_OPSEQ |
 348 +                               TC_OPTERM | TC_BEGIN | TC_FUNCDECL)) != TC_EOF) {
 349 +               if (tclass & TC_OPTERM)
 350 +                       continue;
 351 +
 352 +               seq = &tmp;
 353 +               if (tclass & TC_BEGIN) {
 354 +                       initseq = xzalloc(sizeof(chain));
 355 +                       seq = initseq;
 356 +                       chain_group();
 357 +               } else if (tclass & TC_FUNCDECL) {
 358 +                       next_token(TC_FUNCTION);
 359 +                       pos++;
 360 +                       f = newfunc(t.string);
 361 +                       f->type = AWKFUNC;
 362 +                       f->x.body.first = NULL;
 363 +                       f->nargs = 0;
 364 +                       while (next_token(TC_VARIABLE | TC_SEQTERM) & TC_VARIABLE) {
 365 +                               v = findvar(ahash, t.string);
 366 +                               v->x.aidx = (f->nargs)++;
 367 +
 368 +                               if (next_token(TC_COMMA | TC_SEQTERM) & TC_SEQTERM)
 369 +                                       break;
 370 +                       }
 371 +                       seq = &(f->x.body);
 372 +                       chain_group();
 373 +                       clear_array(ahash);
 374 +               }
 375 +       }
 376 +       if (initseq && initseq->first)
 377 +               tv = evaluate(initseq->first, tv);
 378 +       nvfree(tv);
 379 +}
 380 +
 381 +
 382 +/* include an awk file and run its BEGIN{} section */
 383 +static xhash *includes = NULL;
 384 +static void include_file(char *filename)
 385 +{
 386 +       char *s;
 387 +       var *v;
 388 +
 389 +       if (!includes)
 390 +               includes = hash_init();
 391 +
 392 +       /* find out if the file has been included already */
 393 +       v = findvar(includes, filename);
 394 +       if (istrue(v))
 395 +               return;
 396 +       setvar_s(v, "1");
 397 +
 398 +       /* read include file */
 399 +       s = get_file(filename);
 400 +       if (!s) {
 401 +               fprintf(stderr, "Could not open file.\n");
 402 +               return;
 403 +       }
 404 +       parse_include(s+1);
 405 +       free(s);
 406 +}
 407 +
 408 +static var *include(var *res, var *args, int nargs)
 409 +{
 410 +       char *s;
 411 +
 412 +       s = getvar_s(args);
 413 +       if (s && (strlen(s) > 0))
 414 +               include_file(s);
 415 +
 416 +       return res;
 417 +}
 418 +
 419 +/* parse an awk expression */
 420 +static var *parse_awk(char *str, var *tv)
 421 +{
 422 +       chain body;
 423 +       node *n;
 424 +
 425 +       memset(&body, 0, sizeof(body));
 426 +       pos = str;
 427 +       seq = &body;
 428 +
 429 +       /* end of expression, assume that there's going to be a free byte
 430 +        * at the end of the string that can be used for the ')' */
 431 +       strcat(str + strlen(str), "}");
 432 +       n = parse_expr(TC_GRPTERM);
 433 +       if (!n)
 434 +               return NULL;
 435 +
 436 +       return evaluate(n, tv);
 437 +}
 438 +
 439 +static inline void print_translate(char *s)
 440 +{
 441 +       char *str = s;
 442 +       if (lang_inuse)
 443 +               str = translate_line(s);
 444 +       fputs(str, stdout);
 445 +       fflush(stdout);
 446 +       if (lang_inuse)
 447 +               free(str);
 448 +}
 449 +
 450 +static void render_element(struct template_cb *tcb, struct template_element *e)
 451 +{
 452 +       var *v;
 453 +       char *s, *s2;
 454 +       int i;
 455 +
 456 +       if (!e || !e->var)
 457 +               return;
 458 +       lineno = e->line;
 459 +       switch (e->t) {
 460 +               case T_TEXT:
 461 +                       s = strdup(e->var);
 462 +                       print_translate(s);
 463 +                       free(s);
 464 +                       break;
 465 +               case T_CODE:
 466 +                       s = strdup(e->var);
 467 +                       v = nvalloc(1);
 468 +                       s2 = strdup(getvar_s(parse_awk(s, v)));
 469 +                       nvfree(v);
 470 +                       print_translate(s);
 471 +                       free(s);
 472 +                       free(s2);
 473 +                       break;
 474 +               case T_IF:
 475 +                       s = strdup(e->var);
 476 +                       v = nvalloc(1);
 477 +                       i = istrue(parse_awk(s, v));
 478 +                       nvfree(v);
 479 +                       free(s);
 480 +
 481 +                       if (i)
 482 +                               execute_template(tcb, e->sub);
 483 +                       else if (e->sub2)
 484 +                               execute_template(tcb, e->sub2);
 485 +                       break;
 486 +               case T_FOR: {
 487 +                               v = newvar(e->var);
 488 +                               hashwalk_init(v, iamarray(findvar(vhash, e->in)));
 489 +                               while (hashwalk_next(v)) {
 490 +                                       execute_template(tcb, e->sub);
 491 +                               }
 492 +                               clrvar(v);
 493 +                       }
 494 +                       break;
 495 +               default:
 496 +                       break;
 497 +       }
 498 +}
 499 +
 500 +/* awk method render(), which opens a template file and processes all awk ssi calls */
 501 +static void render_file(char *filename)
 502 +{
 503 +       struct template_cb tcb;
 504 +       struct template_element *e;
 505 +       FILE *f;
 506 +       char *oldprg;
 507 +       int oldlnr;
 508 +
 509 +       oldlnr = lineno;
 510 +       oldprg = programname;
 511 +       programname = filename;
 512 +
 513 +       f = fopen(filename, "r");
 514 +       if (!f)
 515 +               return;
 516 +
 517 +       memset(&tcb, 0, sizeof(tcb));
 518 +       tcb.handle_element = render_element;
 519 +       e = parse_template(&tcb, f);
 520 +       execute_template(&tcb, e);
 521 +       free_template(&tcb, e);
 522 +       fclose(f);
 523 +       programname = oldprg;
 524 +       lineno = oldlnr;
 525 +}
 526 +
 527 +static var *render(var *res, var *args, int nargs)
 528 +{
 529 +       char *s;
 530 +
 531 +       s = getvar_s(args);
 532 +       if (!s)
 533 +               return res;
 534 +
 535 +       render_file(s);
 536 +
 537 +       return res;
 538 +}
 539 +
 540 +/* Call render, but only if this function hasn't been called already */
 541 +static int layout_rendered = 0;
 542 +static var *render_layout(var *res, var *args, int nargs)
 543 +{
 544 +       if (layout_rendered)
 545 +               return res;
 546 +       layout_rendered = 1;
 547 +       return render(res, args, nargs);
 548 +}
 549 +
 550 +/* registers a global c function for the awk interpreter */
 551 +static void register_cfunc(char *name, awk_cfunc cfunc, int nargs)
 552 +{
 553 +       func *f;
 554 +
 555 +       f = newfunc(name);
 556 +       f->type = CFUNC;
 557 +       f->x.cfunc = cfunc;
 558 +       f->nargs = nargs;
 559 +}
 560 +
 561 +static void putvar(vartype type, char *name, char *value)
 562 +{
 563 +       if (type != FORM_VAR)
 564 +               return;
 565 +
 566 +       setvar_u(findvar(formvar, name), value);
 567 +}
 568 +
 569 +static char *cgi_getvar(char *name)
 570 +{
 571 +       if (!formvar) {
 572 +               formvar = hash_init();
 573 +               cgi_init(putvar);
 574 +       }
 575 +
 576 +       if (!formvar || !name)
 577 +               return NULL;
 578 +
 579 +       return getvar_s(findvar(formvar, name));
 580 +}
 581 +
 582 +/* function call for accessing cgi form variables */
 583 +static var *getvar(var *res, var *args, int nargs)
 584 +{
 585 +       char *s;
 586 +       char *svar;
 587 +
 588 +       s = getvar_s(args);
 589 +       if (!s)
 590 +               return res;
 591 +
 592 +       svar = cgi_getvar(s);
 593 +       if (!svar)
 594 +               return res;
 595 +
 596 +       setvar_u(res, svar);
 597 +
 598 +       return res;
 599 +}
 600 +
 601 +/* call an awk function without arguments by string reference */
 602 +static var *call(var *res, var *args, int nargs)
 603 +{
 604 +       char *s = getvar_s(args);
 605 +       func *f;
 606 +
 607 +       if (!s)
 608 +               goto done;
 609 +
 610 +       f = newfunc(s);
 611 +       if (f && f->type == AWKFUNC && f->x.body.first)
 612 +               return evaluate(f->x.body.first, res);
 613 +
 614 +done:
 615 +       return res;
 616 +}
 617 +
 618 +
 619 +static int run_awxscript(char *name)
 620 +{
 621 +       var tv, *layout, *action;
 622 +       char *tmp, *s = NULL;
 623 +
 624 +       zero_out_var(&tv);
 625 +       programname = name;
 626 +
 627 +       /* read the main controller source */
 628 +       s = get_file(programname);
 629 +       if (!s) {
 630 +               fprintf(stderr, "Could not open file\n");
 631 +               return 1;
 632 +       }
 633 +       parse_program(s+1);
 634 +       free(s);
 635 +
 636 +
 637 +       /* set some defaults for ACTION and LAYOUT, which will have special meaning */
 638 +       layout = newvar("LAYOUT");
 639 +       setvar_s(layout, "views/layout.ahtml");
 640 +
 641 +       /* run the BEGIN {} block */
 642 +       evaluate(beginseq.first, &tv);
 643 +
 644 +       action = newvar("ACTION");
 645 +       if (!(strlen(getvar_s(action)) > 0)) {
 646 +               tmp = cgi_getvar("action");
 647 +               if (!tmp || (strlen(tmp) <= 0))
 648 +                       tmp = strdup("default");
 649 +
 650 +               setvar_p(action, tmp);
 651 +       }
 652 +
 653 +       /* call the action (precedence: begin block override > cgi parameter > "default") */
 654 +       tmp = xmalloc(strlen(getvar_s(action)) + 7);
 655 +       sprintf(tmp, "handle_%s", getvar_s(action));
 656 +       setvar_s(action, tmp);
 657 +       call(&tv, action, 1);
 658 +       free(tmp);
 659 +
 660 +       /* render the selected layout, will do nothing if render_layout has been called from awk */
 661 +       render_layout(&tv, layout, 1);
 662 +
 663 +       return 0;
 664 +}
 665 +
 666 +
 667 +/* main awx processing function. called from awk_main() */
 668 +static int do_awx(int argc, char **argv)
 669 +{
 670 +       int ret = -1;
 671 +       var tv;
 672 +       int i, c;
 673 +       char **args = argv;
 674 +
 675 +       zero_out_var(&tv);
 676 +
 677 +       /* register awk C callbacks */
 678 +       register_cfunc("getvar", getvar, 1);
 679 +       register_cfunc("render", render, 1);
 680 +       register_cfunc("render_layout", render_layout, 1);
 681 +       register_cfunc("call", call, 1);
 682 +       register_cfunc("include", include, 1);
 683 +       register_cfunc("init_lang", init_lang, 1);
 684 +       register_cfunc("load_lang", load_lang, 1);
 685 +
 686 +       if (!is_awx)
 687 +               return 0;
 688 +
 689 +       /* fill in ARGV array */
 690 +       setvar_i(V[ARGC], argc + 1);
 691 +       setari_u(V[ARGV], 0, "awx");
 692 +       i = 0;
 693 +       while (*args)
 694 +               setari_u(V[ARGV], ++i, *args++);
 695 +
 696 +       while((c = getopt(argc, argv, "i:f:")) != EOF) {
 697 +               switch(c) {
 698 +                       case 'i':
 699 +                               programname = optarg;
 700 +                               include_file(optarg);
 701 +                               break;
 702 +                       case 'f':
 703 +                               ret = 0;
 704 +                               programname = optarg;
 705 +                               render_file(optarg);
 706 +                               goto done;
 707 +               }
 708 +       }
 709 +       argc -= optind;
 710 +       argv += optind;
 711 +
 712 +       if (argc < 1) {
 713 +               fprintf(stderr, "Invalid argument.\n");
 714 +               goto done;
 715 +       }
 716 +
 717 +       ret = run_awxscript(*argv);
 718 +
 719 +done:
 720 +       exit(ret);
 721 +}
 722 +
 723 +/* entry point for awx applet */
 724 +int awx_main(int argc, char **argv)
 725 +{
 726 +       is_awx = 1;
 727 +       return awk_main(argc, argv);
 728 +}
 729 +
 730 diff -purN bb.old/editors/awx_parser.h bb.dev/editors/awx_parser.h
 731 --- bb.old/editors/awx_parser.h 1970-01-01 01:00:00.000000000 +0100
 732 +++ bb.dev/editors/awx_parser.h 2007-05-20 22:30:31.380512280 +0200
 733 @@ -0,0 +1,38 @@
 734 +#ifndef __TEMPLATE_PARSER_H
 735 +#define __TEMPLATE_PARSER_H
 736 +
 737 +enum type {
 738 +       T_TEXT,
 739 +       T_FOR,
 740 +       T_IF,
 741 +       T_CODE
 742 +};
 743 +
 744 +struct template_element;
 745 +struct template_cb;
 746 +
 747 +struct template_cb {
 748 +       void *(*prepare_code)(struct template_element *);
 749 +       void (*handle_element)(struct template_cb *, struct template_element *);
 750 +       void (*free_code)(struct template_element *);
 751 +};
 752 +
 753 +struct template_element {
 754 +       enum type t;
 755 +       char *var;
 756 +       char *in;
 757 +       int line;
 758 +       void *priv;
 759 +       struct template_element *parent;
 760 +       struct template_element *sub;
 761 +       struct template_element *sub2;
 762 +       struct template_element *prev;
 763 +       struct template_element *next;
 764 +};
 765 +
 766 +
 767 +struct template_element *parse_template(struct template_cb *cb, FILE *in);
 768 +void execute_template(struct template_cb *cb, struct template_element *e);
 769 +void free_template(struct template_cb *cb, struct template_element *e);
 770 +
 771 +#endif
 772 diff -purN bb.old/editors/awx_parser.l bb.dev/editors/awx_parser.l
 773 --- bb.old/editors/awx_parser.l 1970-01-01 01:00:00.000000000 +0100
 774 +++ bb.dev/editors/awx_parser.l 2007-05-20 22:30:31.380512280 +0200
 775 @@ -0,0 +1,300 @@
 776 +%{
 777 +#include <stdio.h>
 778 +#include <string.h>
 779 +#include <stdlib.h>
 780 +#include "busybox.h"
 781 +#include "awx_parser.h"
 782 +
 783 +enum {
 784 +       S_INIT,
 785 +       S_TEXT,
 786 +       S_CODE,
 787 +       S_IF_START,
 788 +       S_FOR_START,
 789 +       S_FOR_IN,
 790 +       S_END,
 791 +       S_ELSE,
 792 +       S_EOF
 793 +};
 794 +int state;
 795 +
 796 +#undef DEBUG
 797 +#ifdef DEBUG
 798 +char *statestr[] = {
 799 +       [S_INIT] = "S_INIT",
 800 +       [S_TEXT] = "S_TEXT",
 801 +       [S_CODE] = "S_CODE",
 802 +       [S_IF_START] = "S_IF_START",
 803 +       [S_FOR_START] = "S_FOR_START",
 804 +       [S_FOR_IN] = "S_FOR_IN",
 805 +       [S_EOF] = "S_EOF"
 806 +};
 807 +
 808 +char *typestr[] = {
 809 +       [T_TEXT] = "T_TEXT",
 810 +       [T_FOR] = "T_FOR",
 811 +       [T_IF] = "T_IF",
 812 +       [T_CODE] = "T_CODE"
 813 +};
 814 +#endif
 815 +
 816 +static struct template_cb *parse_cb;
 817 +static struct template_element *cur, *head;
 818 +static char *textbuf;
 819 +static unsigned int buflen;
 820 +static unsigned int buf_offset;
 821 +static int _lnr = 0;
 822 +
 823 +static void buf_realloc(void)
 824 +{
 825 +       buflen *= 2;
 826 +       textbuf = xrealloc(textbuf, buflen);
 827 +}
 828 +
 829 +static void parse_error(char *str)
 830 +{
 831 +       fprintf(stderr, "Parse error%s%s\n", (str ? ": " : "!"), (str ?: ""));
 832 +       exit(255);
 833 +}
 834 +
 835 +
 836 +static struct template_element *new_template_element(struct template_element *parent)
 837 +{
 838 +       struct template_element *ptr;
 839 +
 840 +       ptr = xzalloc(sizeof(*ptr));
 841 +       ptr->parent = parent;
 842 +       return ptr;
 843 +}
 844 +
 845 +static inline void next_template_element(void)
 846 +{
 847 +       cur->next = new_template_element(cur->parent);
 848 +       cur->next->prev = cur;
 849 +       cur = cur->next;
 850 +}
 851 +
 852 +static void addtext(char *text)
 853 +{
 854 +       while(buf_offset + strlen(text) + 1 > buflen)
 855 +               buf_realloc();
 856 +
 857 +       buf_offset += sprintf(&textbuf[buf_offset], "%s", text);
 858 +}
 859 +
 860 +static void set_state(int newstate)
 861 +{
 862 +       char *ptr;
 863 +
 864 +#ifdef DEBUG
 865 +       static int _rec = 0;
 866 +       fprintf(stderr, "DEBUG(%d): %s => %s: %s\n", _rec, statestr[state], statestr[newstate], textbuf);
 867 +#endif
 868 +       ptr = xstrdup(textbuf);
 869 +       if (state == S_FOR_IN)
 870 +               cur->in = ptr;
 871 +       else
 872 +               cur->var = ptr;
 873 +
 874 +       if (parse_cb && (cur->t == T_CODE) && parse_cb->prepare_code)
 875 +               parse_cb->prepare_code(cur);
 876 +
 877 +       buf_offset = 0;
 878 +       *textbuf = 0;
 879 +
 880 +       switch(newstate) {
 881 +#if 0
 882 +               case S_EOF:
 883 +                       if (cur->parent)
 884 +                               parse_error();
 885 +                       break;
 886 +#endif
 887 +               case S_FOR_START:
 888 +                       if (ptr || !cur->prev)
 889 +                               next_template_element();
 890 +                       cur->t = T_FOR;
 891 +                       break;
 892 +               case S_IF_START:
 893 +                       if (ptr || !cur->prev)
 894 +                               next_template_element();
 895 +                       cur->t = T_IF;
 896 +                       break;
 897 +               case S_ELSE:
 898 +                       cur = cur->parent;
 899 +                       if (!cur)
 900 +                               parse_error("'@else' without parent element");
 901 +                       cur->sub2 = new_template_element(cur);
 902 +                       cur = cur->sub2;
 903 +                       newstate = S_TEXT;
 904 +                       break;
 905 +               case S_END:
 906 +#ifdef DEBUG
 907 +                       _rec--;
 908 +#endif
 909 +                       cur = cur->parent;
 910 +                       if (!cur)
 911 +                               parse_error("'@end' without parent element");
 912 +
 913 +                       next_template_element();
 914 +                       cur->t = T_TEXT;
 915 +                       newstate = S_TEXT;
 916 +                       break;
 917 +               case S_TEXT:
 918 +                       switch (cur->t) {
 919 +                               case T_CODE:
 920 +                                       next_template_element();
 921 +                                       break;
 922 +                               case T_IF:
 923 +                               case T_FOR:
 924 +#ifdef DEBUG
 925 +                                       _rec++;
 926 +#endif
 927 +                                       cur->sub = new_template_element(cur);
 928 +                                       cur = cur->sub;
 929 +                                       break;
 930 +                               default:
 931 +                                       break;
 932 +                       }
 933 +                       cur->t = T_TEXT;
 934 +                       break;
 935 +               case S_CODE:
 936 +                       if (ptr || !cur->prev)
 937 +                               next_template_element();
 938 +                       cur->t = T_CODE;
 939 +                       break;
 940 +               default:
 941 +                       break;
 942 +       }
 943 +       cur->line = _lnr;
 944 +       state = newstate;
 945 +}
 946 +
 947 +%}
 948 +
 949 +%%
 950 +"<%"[ \n\t]*"@if"[ \n\t]+ {
 951 +       if (state == S_TEXT)
 952 +               set_state(S_IF_START);
 953 +       else
 954 +               REJECT;
 955 +}
 956 +
 957 +"<%"[ \n\t]*"@for"[ \n\t]+ {
 958 +       if (state == S_TEXT)
 959 +               set_state(S_FOR_START);
 960 +       else
 961 +               REJECT;
 962 +}
 963 +
 964 +[ \n\t]+"in"[ \n\t]+ {
 965 +       if (state == S_FOR_START)
 966 +               set_state(S_FOR_IN);
 967 +       else
 968 +               REJECT;
 969 +}
 970 +
 971 +"<%"[ \n\t]*"@end"[ \n\t]*%> {
 972 +       if (state != S_TEXT)
 973 +               REJECT;
 974 +       set_state(S_END);
 975 +}
 976 +
 977 +"<%"[ \n\t]*"@else"[ \n\t]*%> {
 978 +       if (state != S_TEXT)
 979 +               REJECT;
 980 +       set_state(S_ELSE);
 981 +}
 982 +
 983 +"<%" {
 984 +       if (state != S_TEXT)
 985 +               parse_error("'<%' cannot be nested");
 986 +       set_state(S_CODE);
 987 +}
 988 +
 989 +[ \n\t]"%>" {
 990 +       if (state == S_TEXT)
 991 +               REJECT;
 992 +       set_state(S_TEXT);
 993 +}
 994 +
 995 +\n {
 996 +       _lnr++;
 997 +       if (state == S_TEXT)
 998 +               addtext(yytext);
 999 +}
1000 +.      {
1001 +       addtext(yytext);
1002 +}
1003 +
1004 +
1005 +%%
1006 +
1007 +
1008 +void execute_template(struct template_cb *cb, struct template_element *e)
1009 +{
1010 +       static int rec = 0;
1011 +
1012 +       while (e) {
1013 +#ifdef DEBUG
1014 +               fprintf(stderr, "DEBUG: execute(%d)\t%s\n", rec, typestr[e->t]);
1015 +#endif
1016 +               rec++;
1017 +               if (cb->handle_element)
1018 +                       cb->handle_element(cb, e);
1019 +               rec--;
1020 +               e = e->next;
1021 +       }
1022 +}
1023 +
1024 +int yywrap()
1025 +{
1026 +       set_state(S_EOF);
1027 +       return 1;
1028 +}
1029 +
1030 +struct template_element *parse_template(struct template_cb *cb, FILE *in)
1031 +{
1032 +       _lnr = 1;
1033 +       buf_offset = 0;
1034 +       state = S_TEXT;
1035 +       parse_cb = cb;
1036 +
1037 +       buflen = 4096;
1038 +       textbuf = xzalloc(buflen);
1039 +
1040 +       head = xzalloc(sizeof(*head));
1041 +       head->t = T_TEXT;
1042 +       cur = head;
1043 +
1044 +       yyin = in;
1045 +       yylex();
1046 +
1047 +       return head;
1048 +}
1049 +
1050 +void free_template(struct template_cb *cb, struct template_element *e)
1051 +{
1052 +       struct template_element *next;
1053 +
1054 +       if (!e)
1055 +               return;
1056 +
1057 +       switch (e->t) {
1058 +               case T_CODE:
1059 +                       if (cb->free_code)
1060 +                               cb->free_code(e);
1061 +                       break;
1062 +               case T_FOR:
1063 +               case T_IF:
1064 +                       free_template(cb, e->sub);
1065 +                       break;
1066 +               default:
1067 +                       break;
1068 +       }
1069 +       if (e->var)
1070 +               free(e->var);
1071 +       if (e->in)
1072 +               free(e->in);
1073 +
1074 +       next = e->next;
1075 +       free(e);
1076 +       return free_template(cb, next);
1077 +}
1078 diff -purN bb.old/editors/Config.in bb.dev/editors/Config.in
1079 --- bb.old/editors/Config.in    2007-05-20 04:17:05.003197632 +0200
1080 +++ bb.dev/editors/Config.in    2007-05-20 22:30:31.380512280 +0200
1081 @@ -12,6 +12,13 @@ config AWK
1082           Awk is used as a pattern scanning and processing language.  This is
1083           the BusyBox implementation of that programming language.
1084
1085 +config AWX
1086 +       bool "Enable awx (awk web extension)"
1087 +       default n
1088 +       depends on AWK
1089 +       help
1090 +         awx - awk web extension
1091 +
1092  config FEATURE_AWK_MATH
1093         bool "Enable math functions (requires libm)"
1094         default y
1095 diff -purN bb.old/editors/Kbuild bb.dev/editors/Kbuild
1096 --- bb.old/editors/Kbuild       2007-03-18 17:59:37.000000000 +0100
1097 +++ bb.dev/editors/Kbuild       2007-05-20 22:30:31.381512128 +0200
1098 @@ -10,3 +10,12 @@ lib-$(CONFIG_ED)        += ed.o
1099  lib-$(CONFIG_PATCH)     += patch.o
1100  lib-$(CONFIG_SED)       += sed.o
1101  lib-$(CONFIG_VI)        += vi.o
1102 +lib-$(CONFIG_AWX)              += awx_parser.o
1103 +
1104 +editors/awx_parser.c: editors/awx_parser.l editors/awx_parser.h
1105 +       @flex $<
1106 +       @mv lex.yy.c $@
1107 +
1108 +editors/awx_parser.o: editors/awx_parser.c FORCE
1109 +       $(call cmd,force_checksrc)
1110 +       $(call if_changed_rule,cc_o_c)
1111 diff -purN bb.old/include/applets.h bb.dev/include/applets.h
1112 --- bb.old/include/applets.h    2007-05-20 04:17:05.003197632 +0200
1113 +++ bb.dev/include/applets.h    2007-05-20 22:30:31.381512128 +0200
1114 @@ -60,6 +60,7 @@ USE_ARP(APPLET(arp, _BB_DIR_SBIN, _BB_SU
1115  USE_ARPING(APPLET(arping, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
1116  USE_ASH(APPLET_NOUSAGE(ash, ash, _BB_DIR_BIN, _BB_SUID_NEVER))
1117  USE_AWK(APPLET(awk, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
1118 +USE_AWX(APPLET_NOUSAGE(awx, awx, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
1119  USE_BASENAME(APPLET(basename, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
1120  USE_BBCONFIG(APPLET(bbconfig, _BB_DIR_BIN, _BB_SUID_NEVER))
1121  //USE_BBSH(APPLET(bbsh, _BB_DIR_BIN, _BB_SUID_NEVER))
1122 diff -purN bb.old/include/cgi.h bb.dev/include/cgi.h
1123 --- bb.old/include/cgi.h        1970-01-01 01:00:00.000000000 +0100
1124 +++ bb.dev/include/cgi.h        2007-05-20 22:30:31.381512128 +0200
1125 @@ -0,0 +1,8 @@
1126 +#ifndef CGI_H
1127 +#define CGI_H
1128 +
1129 +typedef enum { FORM_VAR, COOKIE_VAR } vartype;
1130 +typedef void (*var_handler) (vartype, char *, char *);
1131 +int cgi_init(var_handler);
1132 +
1133 +#endif
1134 diff -purN bb.old/libbb/cgi.c bb.dev/libbb/cgi.c
1135 --- bb.old/libbb/cgi.c  1970-01-01 01:00:00.000000000 +0100
1136 +++ bb.dev/libbb/cgi.c  2007-05-20 22:30:31.382511976 +0200
1137 @@ -0,0 +1,457 @@
1138 +/* --------------------------------------------------------------------------
1139 + * functions for processing cgi form data
1140 + * Copyright (C) 2007 by Felix Fietkau <nbd@openwrt.org>
1141 + *
1142 + * parts taken from the core of haserl.cgi - a poor-man's php for embedded/lightweight environments
1143 + * $Id: haserl.c,v 1.13 2004/11/10 17:59:35 nangel Exp $
1144 + * Copyright (c) 2003,2004    Nathan Angelacos (nangel@users.sourceforge.net)
1145 + *
1146 + * This program is free software; you can redistribute it and/or modify
1147 + * it under the terms of the GNU General Public License as published by
1148 + * the Free Software Foundation; either version 2 of the License, or
1149 + * (at your option) any later version.
1150 + *
1151 + * This program is distributed in the hope that it will be useful,
1152 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
1153 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
1154 + * General Public License for more details.
1155 + *
1156 + * You should have received a copy of the GNU General Public License
1157 + * along with this program; if not, write to the Free Software
1158 + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
1159 + *
1160 + * -----
1161 + * The x2c() and unescape_url() routines were taken from
1162 + *  http://www.jmarshall.com/easy/cgi/getcgi.c.txt
1163 + *
1164 + * The comments in that text file state:
1165 + *
1166 + ***  Written in 1996 by James Marshall, james@jmarshall.com, except
1167 + ***  that the x2c() and unescape_url() routines were lifted directly
1168 + ***  from NCSA's sample program util.c, packaged with their HTTPD.
1169 + ***     For the latest, see http://www.jmarshall.com/easy/cgi/
1170 + * -----
1171 + *
1172 + ------------------------------------------------------------------------- */
1173 +
1174 +#include <stdio.h>
1175 +#include <unistd.h>
1176 +#include <time.h>
1177 +#include <sys/mman.h>
1178 +#include <sys/types.h>
1179 +#include <sys/wait.h>
1180 +#include <sys/stat.h>
1181 +#include <sys/fcntl.h>
1182 +#include <stdlib.h>
1183 +#include <string.h>
1184 +#include <cgi.h>
1185 +
1186 +#ifndef MAX_UPLOAD_KB
1187 +#define MAX_UPLOAD_KB 2048
1188 +#endif
1189 +#define TEMPDIR "/tmp"
1190 +
1191 +static int global_upload_size = 0;
1192 +static int ReadMimeEncodedInput(char *qs);
1193 +static var_handler do_putvar = NULL;
1194 +
1195 +/*
1196 + * Convert 2 char hex string into char it represents
1197 + * (from http://www.jmarshall.com/easy/cgi)
1198 + */
1199 +static char x2c (char *what) {
1200 +       char digit;
1201 +
1202 +       digit=(what[0] >= 'A' ? ((what[0] & 0xdf) - 'A')+10 : (what[0] - '0'));
1203 +       digit *=16;
1204 +       digit+=(what[1] >= 'A' ? ((what[1] & 0xdf) - 'A')+10 : (what[1] - '0'));
1205 +
1206 +       return digit;
1207 +}
1208 +
1209 +/*
1210 + * unsescape %xx to the characters they represent
1211 + */
1212 +
1213 +static void unescape_url (char *url) {
1214 +       int  i,j;
1215 +
1216 +       for (i=0, j=0; url[j]; ++i, ++j) {
1217 +               if ((url[i] = url[j]) == '%') {
1218 +                       url[i] = x2c(&url[j+1]);
1219 +                       j+=2;
1220 +               }
1221 +       }
1222 +       url[i]='\0';
1223 +}
1224 +
1225 +static inline void put_var(vartype type, char *var)
1226 +{
1227 +       char *val;
1228 +
1229 +       if (!do_putvar)
1230 +               return;
1231 +
1232 +       val = strchr(var, '=');
1233 +       if (!val)
1234 +               return;
1235 +
1236 +       *val = 0;
1237 +       val++;
1238 +       do_putvar(type, var, val);
1239 +
1240 +       return;
1241 +}
1242 +
1243 +
1244 +/* CookieVars ()
1245 + * if HTTP_COOKIE is passed as an environment variable,
1246 + * attempt to parse its values into environment variables
1247 + */
1248 +static void CookieVars (void)
1249 +{
1250 +       char *qs;
1251 +       char *token;
1252 +
1253 +       if (getenv("HTTP_COOKIE") != NULL)
1254 +               qs=strdup(getenv("HTTP_COOKIE"));
1255 +       else
1256 +               return;
1257 +
1258 +       /** split on; to extract name value pairs */
1259 +       token=strtok(qs, ";");
1260 +       while (token) {
1261 +               // skip leading spaces
1262 +               while ( token[0] == ' ' )
1263 +                       token++;
1264 +
1265 +               put_var(COOKIE_VAR, token);
1266 +
1267 +               token = strtok(NULL, ";");
1268 +       }
1269 +       free (qs);
1270 +}
1271 +
1272 +/*
1273 + * Read cgi variables from query string, and put in environment
1274 + */
1275 +static int ReadCGIQueryString (void)
1276 +{
1277 +       char *qs;
1278 +       char *token;
1279 +       int i;
1280 +
1281 +       if (getenv("QUERY_STRING") != NULL)
1282 +               qs=strdup(getenv("QUERY_STRING"));
1283 +       else
1284 +               return 0;
1285 +
1286 +       /* change plusses into spaces */
1287 +       for (i=0; qs[i]; i++ ) { if (qs[i] == '+' ) { qs[i] = ' ';} };
1288 +
1289 +       /** split on & and ; to extract name value pairs */
1290 +
1291 +       token=strtok(qs, "&;");
1292 +       while (token) {
1293 +               unescape_url(token);
1294 +               put_var(FORM_VAR, token);
1295 +               token=strtok(NULL, "&;");
1296 +       }
1297 +       free(qs);
1298 +
1299 +       return 0;
1300 +}
1301 +
1302 +
1303 +/*
1304 + * Read cgi variables from stdin (for POST queries)
1305 + * (oh... and if its mime-encoded file upload, we save the
1306 + * file to /tmp; and return the name of the tmp file
1307 + * the cgi script is responsible for disposing of the tmp file
1308 + */
1309 +
1310 +static int ReadCGIPOSTValues (void) {
1311 +       char *qs;
1312 +       int content_length;
1313 +       int i;
1314 +       char *token;
1315 +
1316 +
1317 +       if (getenv("CONTENT_LENGTH") == NULL)
1318 +               return(-1);
1319 +       else
1320 +               content_length = atoi(getenv("CONTENT_LENGTH"));
1321 +
1322 +       /* protect ourselves from 20GB file uploads */
1323 +       if (content_length > MAX_UPLOAD_KB * 1024 ) {
1324 +               /* But we need to finish reading the content */
1325 +               while ( fread( &i, sizeof(int), 1, stdin) == 1 );
1326 +               return -1;
1327 +       }
1328 +
1329 +       if (!(qs=malloc(content_length+1)))
1330 +               return -1;
1331 +
1332 +       /* set the buffer to null, so that a browser messing with less
1333 +          data than content_length won't buffer underrun us */
1334 +       memset(qs, 0 ,content_length+1);
1335 +
1336 +       if ((!fread(qs,content_length,1,stdin) &&
1337 +               (content_length > 0)
1338 +               && !feof(stdin))) {
1339 +
1340 +               free(qs);
1341 +               return -1;
1342 +       }
1343 +
1344 +       if (getenv("CONTENT_TYPE") && (strncasecmp(getenv("CONTENT_TYPE"), "multipart/form-data", 19) == 0)) {
1345 +               /* This is a mime request, we need to go to the mime handler */
1346 +               i=ReadMimeEncodedInput(qs);
1347 +               free(qs);
1348 +
1349 +               return i;
1350 +       }
1351 +
1352 +       /* change plusses into spaces */
1353 +       for (i=0; qs[i]; i++ ) { if (qs[i] == '+' ) { qs[i] = ' ';} };
1354 +
1355 +       /** split on & and ; to extract name value pairs */
1356 +       token=strtok(qs, "&;");
1357 +       while (token) {
1358 +               unescape_url(token);
1359 +               put_var(FORM_VAR, token);
1360 +               token=strtok(NULL, "&;");
1361 +       }
1362 +
1363 +       free(qs);
1364 +
1365 +       return 0;
1366 +}
1367 +
1368 +/*
1369 + *  LineToStr - Scans char and replaces the first "\n" with a "\0";
1370 + *  If it finds a "\r", it does that to; (fix DOS brokennes) returns
1371 + *  the length of the string;
1372 + */
1373 +static int LineToStr (char *string, size_t max) {
1374 +       size_t offset=0;
1375 +
1376 +       while ((offset < max) && (string[offset] != '\n') && (string[offset] != '\r'))
1377 +               offset++;
1378 +
1379 +       if (string[offset] == '\r') {
1380 +               string[offset]='\0';
1381 +               offset++;
1382 +       }
1383 +       if (string[offset] == '\n') {
1384 +               string[offset]='\0';
1385 +               offset++;
1386 +       }
1387 +
1388 +       return offset;
1389 +}
1390 +
1391 +
1392 +/*
1393 + * ReadMimeEncodedInput - handles things that are mime encoded
1394 + * takes a pointer to the input; returns 0 on success
1395 + */
1396 +
1397 +static int ReadMimeEncodedInput(char *qs)
1398 +{
1399 +       char    *boundary;
1400 +       char    *ct;
1401 +       int     i;
1402 +       int     datastart;
1403 +       size_t  cl;
1404 +       size_t  offset;
1405 +       char    *envname;
1406 +       char    *filename;
1407 +       char    *ptr;
1408 +       int     line;
1409 +       char    tmpname[] = TEMPDIR "/XXXXXX";
1410 +       int     fd;
1411 +       /* we should only get here if the content type was set. Segfaults happen
1412 +          if Content_Type is null */
1413 +
1414 +       if (getenv("CONTENT_LENGTH") == NULL)
1415 +               /* No content length?! */
1416 +               return(-1);
1417 +
1418 +       cl=atoi(getenv("CONTENT_LENGTH"));
1419 +
1420 +       /* we do this 'cause we can't mess with the real env. variable - it would
1421 +        * overwrite the environment - I tried.
1422 +        */
1423 +       i=strlen(getenv("CONTENT_TYPE"))+1;
1424 +       ct=malloc(i);
1425 +       if (ct)
1426 +               memcpy(ct, getenv("CONTENT_TYPE"), i);
1427 +       else
1428 +               return(-1);
1429 +
1430 +       i=(int) NULL;
1431 +       if (ct != NULL) {
1432 +               while (i < strlen(ct) && (strncmp("boundary=", &ct[i], 9) != 0))
1433 +                       i++;
1434 +       }
1435 +       if (i == strlen(ct)) {
1436 +               /* no boundary informaiton found */
1437 +               free(ct);
1438 +               return -1;
1439 +       }
1440 +       boundary=&ct[i+7];
1441 +       /* add two leading -- to the boundary */
1442 +       boundary[0]='-';
1443 +       boundary[1]='-';
1444 +
1445 +       /* begin the big loop.  Look for:
1446 +               --boundary
1447 +               Content-Disposition: form-data;  name="......."
1448 +               ....
1449 +               <blank line>
1450 +               content
1451 +               --boundary
1452 +               Content-Disposition: form-data; name="....." filename="....."
1453 +               ...
1454 +               <blank line>
1455 +               --boundary--
1456 +               eof
1457 +       */
1458 +
1459 +       offset=0;
1460 +       while (offset < cl) {
1461 +               /* first look for boundary */
1462 +               while ((offset < cl) && (memcmp(&qs[offset], boundary, strlen(boundary))))
1463 +                       offset++;
1464 +
1465 +               /* if we got here and we ran off the end, its an error          */
1466 +               if (offset >= cl) {
1467 +                       free(ct);
1468 +                       return -1;
1469 +               }
1470 +
1471 +               /* if the two characters following the boundary are --,         */
1472 +               /* then we are at the end, exit                                 */
1473 +               if (memcmp(&qs[offset+strlen(boundary)], "--", 2) == 0) {
1474 +                       offset+=2;
1475 +                       break;
1476 +               }
1477 +               /* find where the offset should be */
1478 +               line=LineToStr(&qs[offset], cl-offset);
1479 +               offset+=line;
1480 +
1481 +               /* Now we're going to look for content-disposition              */
1482 +               line=LineToStr(&qs[offset], cl-offset);
1483 +               if (strncasecmp(&qs[offset], "Content-Disposition", 19) != 0) {
1484 +                       /* hmm... content disposition was not where we expected it */
1485 +                       free(ct);
1486 +                       return -1;
1487 +               }
1488 +               /* Found it, so let's go find "name="                           */
1489 +               if (!(envname=strstr(&qs[offset], "name="))) {
1490 +                       /* now name= is missing?!                               */
1491 +                       free(ct);
1492 +                       return(-1);
1493 +               } else
1494 +                       envname+=6;
1495 +
1496 +               /* is there a filename tag?                                     */
1497 +               if ((filename=strstr(&qs[offset], "filename="))!= NULL)
1498 +                       filename+=10;
1499 +               else
1500 +                       filename=NULL;
1501 +
1502 +               /* make envname and filename ASCIIZ                             */
1503 +               for (i=0; (envname[i] != '"') && (envname[i] != '\0'); i++);
1504 +
1505 +               envname[i] = '\0';
1506 +               if (filename) {
1507 +                       for (i=0; (filename[i] != '"') && (filename[i] != '\0'); i++);
1508 +                       filename[i] = '\0';
1509 +               }
1510 +               offset+=line;
1511 +
1512 +               /* Ok, by some miracle, we have the name; let's skip till we    */
1513 +               /* come to a blank line                                         */
1514 +               line=LineToStr(&qs[offset], cl-offset);
1515 +               while (strlen(&qs[offset]) > 1) {
1516 +                       offset+=line;
1517 +                       line=LineToStr(&qs[offset], cl-offset);
1518 +               }
1519 +               offset+=line;
1520 +               datastart=offset;
1521 +               /* And we go back to looking for a boundary */
1522 +               while ((offset < cl) && (memcmp(&qs[offset], boundary, strlen(boundary))))
1523 +                       offset++;
1524 +
1525 +               /* strip [cr] lf */
1526 +               if ((qs[offset-1] == '\n') && (qs[offset-2] == '\r'))
1527 +                       offset-=2;
1528 +               else
1529 +                       offset-=1;
1530 +
1531 +               qs[offset]=0;
1532 +
1533 +               /* ok, at this point, we know where the name is, and we know    */
1534 +               /* where the content is... we have to do one of two things      */
1535 +               /* based on whether its a file or not                           */
1536 +               if (filename==NULL) { /* its not a file, so its easy            */
1537 +                       /* just jam the content after the name          */
1538 +                       memcpy(&envname[strlen(envname)+1], &qs[datastart], offset-datastart+1);
1539 +                       envname[strlen(envname)]='=';
1540 +                       put_var(FORM_VAR, envname);
1541 +               } else {        /* handle the fileupload case           */
1542 +                       if (offset-datastart) {  /* only if they uploaded */
1543 +                               if ( global_upload_size == 0 ) {
1544 +                                       return -1;
1545 +                               }
1546 +                               /*  stuff in the filename */
1547 +                               ptr= calloc ( sizeof (char), strlen(envname)+strlen(filename)+2+5 );
1548 +                               sprintf (ptr, "%s_name=%s", envname, filename);
1549 +                               put_var(FORM_VAR, ptr);
1550 +                               free(ptr);
1551 +
1552 +                               fd=mkstemp(tmpname);
1553 +
1554 +                               if (fd == -1)
1555 +                                       return(-1);
1556 +
1557 +                               write(fd, &qs[datastart], offset-datastart);
1558 +                               close(fd);
1559 +                               ptr= calloc (sizeof(char), strlen(envname)+strlen(tmpname)+2);
1560 +                               sprintf (ptr, "%s=%s", envname, tmpname);
1561 +                               put_var(FORM_VAR, ptr);
1562 +                               free(ptr);
1563 +                       }
1564 +               }
1565 +       }
1566 +       free(ct);
1567 +       return 0;
1568 +}
1569 +
1570 +
1571 +/*-------------------------------------------------------------------------
1572 + *
1573 + * Main
1574 + *
1575 + *------------------------------------------------------------------------*/
1576 +
1577 +int cgi_init(var_handler putvar_handler)
1578 +{
1579 +       int     retval = 0;
1580 +
1581 +       do_putvar = putvar_handler;
1582 +
1583 +       /* Read the current environment into our chain */
1584 +       CookieVars();
1585 +       if (getenv("REQUEST_METHOD")) {
1586 +               if (strcasecmp(getenv("REQUEST_METHOD"), "GET") == 0)
1587 +                       retval = ReadCGIQueryString();
1588 +
1589 +               if (strcasecmp(getenv("REQUEST_METHOD"), "POST") == 0)
1590 +                       retval = ReadCGIPOSTValues();
1591 +       }
1592 +
1593 +       return retval;
1594 +}
1595 diff -purN bb.old/libbb/Kbuild bb.dev/libbb/Kbuild
1596 --- bb.old/libbb/Kbuild 2007-05-20 04:17:05.004197480 +0200
1597 +++ bb.dev/libbb/Kbuild 2007-05-20 22:30:31.382511976 +0200
1598 @@ -118,3 +118,6 @@ lib-$(CONFIG_GREP) += xregcomp.o
1599  lib-$(CONFIG_MDEV) += xregcomp.o
1600  lib-$(CONFIG_LESS) += xregcomp.o
1601  lib-$(CONFIG_DEVFSD) += xregcomp.o
1602 +
1603 +lib-$(CONFIG_AWX) += cgi.o
1604 +