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        2007-03-06 19:38:07.278092000 +0100
   3 +++ bb.dev/editors/awk.c        2007-03-11 05:14:11.776304544 +0100
   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        2007-03-14 02:03:50.566202928 +0100
 101 @@ -0,0 +1,590 @@
 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 +
 113 +#define LINE_BUF 2048
 114 +#define HASH_MAX       1536
 115 +#define TR_START       "@TR<<"
 116 +#define TR_END         ">>"
 117 +#define MAX_TR 32
 118 +#define SSI_START "<%"
 119 +#define SSI_END "%>"
 120 +
 121 +#undef fputs
 122 +
 123 +static xhash *lstr = NULL;
 124 +static xhash *formvar = NULL;
 125 +static int lang_inuse = 0;
 126 +
 127 +/* look up a translation symbol from the hash */
 128 +static inline char *translate_lookup(char *str)
 129 +{
 130 +       char *name, *def, *p;
 131 +       hash_item *hi;
 132 +       var *v;
 133 +
 134 +       def = name = str;
 135 +       if (((p = strchr(str, '|')) != NULL)
 136 +               || ((p = strchr(str, '#')) != NULL)) {
 137 +               def = p + 1;
 138 +               *p = 0;
 139 +       }
 140 +
 141 +       hi = hash_search(lstr, name);
 142 +       if (!hi)
 143 +               return def;
 144 +
 145 +       v = &hi->data.v;
 146 +
 147 +       return getvar_s(v);
 148 +}
 149 +
 150 +/* look for translation markers in the line and return the translated string */
 151 +static char *translate_line(char *line)
 152 +{
 153 +       char *tok[MAX_TR * 3];
 154 +       char *l, *p, *p2, *res;
 155 +       int len = 0, _pos = 0, i;
 156 +
 157 +       l = line;
 158 +       while (l != NULL) {
 159 +               if ((p = strstr(l, TR_START)) == NULL) {
 160 +                       len += strlen((tok[_pos++] = l));
 161 +                       break;
 162 +               }
 163 +
 164 +               p2 = strstr(p, TR_END);
 165 +               if (p2 == NULL)
 166 +                       break;
 167 +
 168 +               *p = 0;
 169 +               *p2 = 0;
 170 +               len += strlen((tok[_pos++] = l));
 171 +               len += strlen((tok[_pos++] = translate_lookup(p + strlen(TR_START))));
 172 +
 173 +               l = p2;
 174 +               l += strlen(TR_END);
 175 +       }
 176 +       len++;
 177 +
 178 +       p = xmalloc(len + 1);
 179 +       *p = 0;
 180 +       res = p;
 181 +       for (i = 0; i < _pos; i++) {
 182 +               strcat(p, tok[i]);
 183 +               p += strlen(tok[i]);
 184 +       }
 185 +
 186 +       return res;
 187 +}
 188 +
 189 +/* hook for intercepting awk's use of puts. used for running all printed strings
 190 + * through the translation system */
 191 +static inline int fputs_hook (__const char *__restrict __s, FILE *__restrict __stream)
 192 +{
 193 +       if (lang_inuse && (__stream == stdout)) {
 194 +               int ret;
 195 +               char *str;
 196 +
 197 +               str = translate_line((char *) __s);
 198 +               ret = fputs(str, __stream);
 199 +               free(str);
 200 +
 201 +               return ret;
 202 +       }
 203 +
 204 +       return fputs(__s, __stream);
 205 +}
 206 +
 207 +static var *init_lang(var *res, var *args, int nargs)
 208 +{
 209 +       if (!lstr)
 210 +               lstr = hash_init();
 211 +
 212 +       lang_inuse = 1;
 213 +       return res;
 214 +}
 215 +
 216 +
 217 +/* load and parse language file */
 218 +static void load_lang_file(char *file)
 219 +{
 220 +       FILE *f;
 221 +       char *b, *name, *value;
 222 +       char buf1[LINE_BUF];
 223 +
 224 +       if ((f = fopen(file, "r")) == NULL)
 225 +               return;
 226 +
 227 +       while (!feof(f) && (fgets(buf1, LINE_BUF - 1, f) != NULL)) {
 228 +               b = buf1;
 229 +               if (*b == '#')
 230 +                       continue; /* skip comments */
 231 +
 232 +               while (isspace(*b))
 233 +                       b++; /* skip leading spaces */
 234 +               if (!*b)
 235 +                       continue;
 236 +
 237 +               name = b;
 238 +               if ((b = strstr(name, "=>")) == NULL)
 239 +                       continue; /* separator not found */
 240 +
 241 +               value = b + 2;
 242 +               if (!*value)
 243 +                       continue;
 244 +
 245 +               *b = 0;
 246 +               for (b--; isspace(*b); b--)
 247 +                       *b = 0; /* remove trailing spaces */
 248 +
 249 +               while (isspace(*value))
 250 +                       value++; /* skip leading spaces */
 251 +
 252 +               for (b = value + strlen(value) - 1; isspace(*b); b--)
 253 +                       *b = 0; /* remove trailing spaces */
 254 +
 255 +               if (!*value)
 256 +                       continue;
 257 +
 258 +               setvar_s(findvar(lstr,name), value);
 259 +       }
 260 +
 261 +       fclose(f);
 262 +}
 263 +
 264 +static var *load_lang(var *res, var *args, int nargs)
 265 +{
 266 +       const char *langfmt = "/usr/lib/webif/lang/%s.txt";
 267 +       char lbuf[LINE_BUF];
 268 +       char *lang;
 269 +
 270 +       if (!lang_inuse)
 271 +               init_lang(res, args, nargs);
 272 +
 273 +       lang = getvar_s(args);
 274 +       if (!lang || !strcmp(lang, ""))
 275 +               return res;
 276 +
 277 +       sprintf(lbuf, langfmt, lang);
 278 +       load_lang_file(lbuf);
 279 +
 280 +       return res;
 281 +}
 282 +
 283 +/* read the contents of an entire file */
 284 +static char *get_file(char *fname)
 285 +{
 286 +       FILE *F;
 287 +       char *s = NULL;
 288 +       int i, j, flen;
 289 +
 290 +       F = fopen(fname, "r");
 291 +       if (!F) {
 292 +               return NULL;
 293 +       }
 294 +
 295 +       if (fseek(F, 0, SEEK_END) == 0) {
 296 +               flen = ftell(F);
 297 +               s = (char *)xmalloc(flen+4);
 298 +               fseek(F, 0, SEEK_SET);
 299 +               i = 1 + fread(s+1, 1, flen, F);
 300 +       } else {
 301 +               for (i=j=1; j>0; i+=j) {
 302 +                       s = (char *)xrealloc(s, i+4096);
 303 +                       j = fread(s+i, 1, 4094, F);
 304 +               }
 305 +       }
 306 +
 307 +       s[i] = '\0';
 308 +       fclose(F);
 309 +       return s;
 310 +}
 311 +
 312 +
 313 +/* parse_include():
 314 + *
 315 + * taken from parse_program from awk.c
 316 + * END{} is not parsed here, and BEGIN{} is executed immediately
 317 + */
 318 +static void parse_include(char *p)
 319 +{
 320 +       uint32_t tclass;
 321 +       chain *initseq = NULL;
 322 +       chain tmp;
 323 +       func *f;
 324 +       var *v, tv;
 325 +
 326 +       zero_out_var(&tv);
 327 +       memset(&tmp, 0, sizeof(tmp));
 328 +       pos = p;
 329 +       t.lineno = 1;
 330 +       while ((tclass = next_token(TC_EOF | TC_OPSEQ |
 331 +                               TC_OPTERM | TC_BEGIN | TC_FUNCDECL)) != TC_EOF) {
 332 +               if (tclass & TC_OPTERM)
 333 +                       continue;
 334 +
 335 +               seq = &tmp;
 336 +               if (tclass & TC_BEGIN) {
 337 +                       initseq = xzalloc(sizeof(chain));
 338 +                       seq = initseq;
 339 +                       chain_group();
 340 +               } else if (tclass & TC_FUNCDECL) {
 341 +                       next_token(TC_FUNCTION);
 342 +                       pos++;
 343 +                       f = newfunc(t.string);
 344 +                       f->type = AWKFUNC;
 345 +                       f->x.body.first = NULL;
 346 +                       f->nargs = 0;
 347 +                       while (next_token(TC_VARIABLE | TC_SEQTERM) & TC_VARIABLE) {
 348 +                               v = findvar(ahash, t.string);
 349 +                               v->x.aidx = (f->nargs)++;
 350 +
 351 +                               if (next_token(TC_COMMA | TC_SEQTERM) & TC_SEQTERM)
 352 +                                       break;
 353 +                       }
 354 +                       seq = &(f->x.body);
 355 +                       chain_group();
 356 +                       clear_array(ahash);
 357 +               }
 358 +       }
 359 +       if (initseq && initseq->first)
 360 +               evaluate(initseq->first, &tv);
 361 +}
 362 +
 363 +
 364 +/* include an awk file and run its BEGIN{} section */
 365 +static xhash *includes = NULL;
 366 +static void include_file(char *filename)
 367 +{
 368 +       char *s;
 369 +       var *v;
 370 +
 371 +       if (!includes)
 372 +               includes = hash_init();
 373 +
 374 +       /* find out if the file has been included already */
 375 +       v = findvar(includes, filename);
 376 +       if (istrue(v))
 377 +               return;
 378 +       setvar_s(v, "1");
 379 +
 380 +       /* read include file */
 381 +       s = get_file(filename);
 382 +       if (!s) {
 383 +               fprintf(stderr, "Could not open file.\n");
 384 +               return;
 385 +       }
 386 +       parse_include(s+1);
 387 +       free(s);
 388 +}
 389 +
 390 +static var *include(var *res, var *args, int nargs)
 391 +{
 392 +       char *s;
 393 +
 394 +       s = getvar_s(args);
 395 +       if (s && (strlen(s) > 0))
 396 +               include_file(s);
 397 +
 398 +       return res;
 399 +}
 400 +
 401 +
 402 +/* parse and evaluate an awk expression and return the result as string */
 403 +static char *render_lookup(char *fname, int lnr, char *str)
 404 +{
 405 +       chain body;
 406 +       var tv;
 407 +
 408 +       memset(&body, 0, sizeof(body));
 409 +       zero_out_var(&tv);
 410 +       pos = str;
 411 +       seq = &body;
 412 +
 413 +       /* end of expression, assume that there's going to be a free byte
 414 +        * at the end of the string that can be used for the ')' */
 415 +       strcat(str + strlen(str), ")");
 416 +       return getvar_s(evaluate(parse_expr(TC_SEQTERM), &tv));
 417 +}
 418 +
 419 +static inline void print_translate(char *s)
 420 +{
 421 +       char *str = s;
 422 +       if (lang_inuse)
 423 +               str = translate_line(s);
 424 +       fputs(str, stdout);
 425 +       fflush(stdout);
 426 +       if (lang_inuse)
 427 +               free(str);
 428 +}
 429 +
 430 +/* process awk calls in a template line and print the output to stdout */
 431 +static void render_line(char *fname, int lnr, char *line)
 432 +{
 433 +       char *tok[MAX_TR * 3];
 434 +       char *l, *p, *p2, *res;
 435 +       int len = 0, _pos = 0, i;
 436 +
 437 +       l = line;
 438 +       while (l != NULL) {
 439 +               if ((p = strstr(l, SSI_START)) == NULL) {
 440 +                       len += strlen((tok[_pos++] = l));
 441 +                       break;
 442 +               }
 443 +
 444 +               p2 = strstr(p, SSI_END);
 445 +               if (p2 == NULL) {
 446 +                       fprintf(stderr, "Parse error in '%s', line '%d', unmatched %s\n", fname, lnr, SSI_END);
 447 +                       break;
 448 +               }
 449 +
 450 +               *p = 0;
 451 +               *p2 = 0;
 452 +
 453 +               len += strlen((tok[_pos++] = l));
 454 +               len += strlen((tok[_pos++] = render_lookup(fname, lnr, p + strlen(SSI_START))));
 455 +
 456 +               l = p2;
 457 +               l += strlen(SSI_END);
 458 +       }
 459 +       len++;
 460 +
 461 +       p = xmalloc(len + 1);
 462 +       *p = 0;
 463 +       res = p;
 464 +       for (i = 0; i < _pos; i++) {
 465 +               strcat(p, tok[i]);
 466 +               p += strlen(tok[i]);
 467 +       }
 468 +       print_translate(res);
 469 +       free(res);
 470 +}
 471 +
 472 +/* awk method render(), which opens a template file and processes all awk ssi calls */
 473 +static void render_file(char *filename)
 474 +{
 475 +       int lnr = 0;
 476 +       FILE *f;
 477 +       char *buf1;
 478 +
 479 +       f = fopen(filename, "r");
 480 +       if (!f)
 481 +               return;
 482 +
 483 +       buf1 = xmalloc(LINE_BUF);
 484 +       while (!feof(f) && (fgets(buf1, LINE_BUF - 1, f) != NULL)) {
 485 +               render_line(filename, ++lnr, buf1);
 486 +       }
 487 +}
 488 +
 489 +static var *render(var *res, var *args, int nargs)
 490 +{
 491 +       char *s;
 492 +
 493 +       s = getvar_s(args);
 494 +       if (!s)
 495 +               return res;
 496 +
 497 +       render_file(s);
 498 +
 499 +       return res;
 500 +}
 501 +
 502 +/* Call render, but only if this function hasn't been called already */
 503 +static int layout_rendered = 0;
 504 +static var *render_layout(var *res, var *args, int nargs)
 505 +{
 506 +       if (layout_rendered)
 507 +               return res;
 508 +       layout_rendered = 1;
 509 +       return render(res, args, nargs);
 510 +}
 511 +
 512 +/* registers a global c function for the awk interpreter */
 513 +static void register_cfunc(char *name, awk_cfunc cfunc, int nargs)
 514 +{
 515 +       func *f;
 516 +
 517 +       f = newfunc(name);
 518 +       f->type = CFUNC;
 519 +       f->x.cfunc = cfunc;
 520 +       f->nargs = nargs;
 521 +}
 522 +
 523 +static void putvar(vartype type, char *name, char *value)
 524 +{
 525 +       if (type != FORM_VAR)
 526 +               return;
 527 +
 528 +       setvar_u(findvar(formvar, name), value);
 529 +}
 530 +
 531 +static char *cgi_getvar(char *name)
 532 +{
 533 +       if (!formvar) {
 534 +               formvar = hash_init();
 535 +               cgi_init(putvar);
 536 +       }
 537 +
 538 +       if (!formvar || !name)
 539 +               return NULL;
 540 +
 541 +       return getvar_s(findvar(formvar, name));
 542 +}
 543 +
 544 +/* function call for accessing cgi form variables */
 545 +static var *getvar(var *res, var *args, int nargs)
 546 +{
 547 +       char *s;
 548 +       char *svar;
 549 +
 550 +       s = getvar_s(args);
 551 +       if (!s)
 552 +               return res;
 553 +
 554 +       svar = cgi_getvar(s);
 555 +       if (!svar)
 556 +               return res;
 557 +
 558 +       setvar_u(res, svar);
 559 +
 560 +       return res;
 561 +}
 562 +
 563 +/* call an awk function without arguments by string reference */
 564 +static var *call(var *res, var *args, int nargs)
 565 +{
 566 +       char *s = getvar_s(args);
 567 +       func *f;
 568 +
 569 +       if (!s)
 570 +               goto done;
 571 +
 572 +       f = newfunc(s);
 573 +       if (f && f->type == AWKFUNC && f->x.body.first)
 574 +               return evaluate(f->x.body.first, res);
 575 +
 576 +done:
 577 +       return res;
 578 +}
 579 +
 580 +
 581 +static int run_awxscript(char *name)
 582 +{
 583 +       var tv, *layout, *action;
 584 +       char *tmp, *s = NULL;
 585 +
 586 +       zero_out_var(&tv);
 587 +       programname = name;
 588 +
 589 +       /* read the main controller source */
 590 +       s = get_file(programname);
 591 +       if (!s) {
 592 +               fprintf(stderr, "Could not open file\n");
 593 +               return 1;
 594 +       }
 595 +       parse_program(s+1);
 596 +       free(s);
 597 +
 598 +
 599 +       /* set some defaults for ACTION and LAYOUT, which will have special meaning */
 600 +       layout = newvar("LAYOUT");
 601 +       setvar_s(layout, "views/layout.ahtml");
 602 +
 603 +       /* run the BEGIN {} block */
 604 +       evaluate(beginseq.first, &tv);
 605 +
 606 +       action = newvar("ACTION");
 607 +       if (!(strlen(getvar_s(action)) > 0)) {
 608 +               tmp = cgi_getvar("action");
 609 +               if (!tmp || (strlen(tmp) <= 0))
 610 +                       tmp = strdup("default");
 611 +
 612 +               setvar_p(action, tmp);
 613 +       }
 614 +
 615 +       /* call the action (precedence: begin block override > cgi parameter > "default") */
 616 +       tmp = xmalloc(strlen(getvar_s(action)) + 7);
 617 +       sprintf(tmp, "handle_%s", getvar_s(action));
 618 +       setvar_s(action, tmp);
 619 +       call(&tv, action, 1);
 620 +       free(tmp);
 621 +
 622 +       /* render the selected layout, will do nothing if render_layout has been called from awk */
 623 +       render_layout(&tv, layout, 1);
 624 +
 625 +       return 0;
 626 +}
 627 +
 628 +
 629 +/* main awx processing function. called from awk_main() */
 630 +static int do_awx(int argc, char **argv)
 631 +{
 632 +       int ret = -1;
 633 +       var tv;
 634 +       int i, c;
 635 +       char **args = argv;
 636 +
 637 +       zero_out_var(&tv);
 638 +
 639 +       /* register awk C callbacks */
 640 +       register_cfunc("getvar", getvar, 1);
 641 +       register_cfunc("render", render, 1);
 642 +       register_cfunc("render_layout", render_layout, 1);
 643 +       register_cfunc("call", call, 1);
 644 +       register_cfunc("include", include, 1);
 645 +       register_cfunc("init_lang", init_lang, 1);
 646 +       register_cfunc("load_lang", load_lang, 1);
 647 +
 648 +       if (!is_awx)
 649 +               return 0;
 650 +
 651 +       /* fill in ARGV array */
 652 +       setvar_i(V[ARGC], argc + 1);
 653 +       setari_u(V[ARGV], 0, "awx");
 654 +       i = 0;
 655 +       while (*args)
 656 +               setari_u(V[ARGV], ++i, *args++);
 657 +
 658 +       while((c = getopt(argc, argv, "i:f:")) != EOF) {
 659 +               switch(c) {
 660 +                       case 'i':
 661 +                               programname = optarg;
 662 +                               include_file(optarg);
 663 +                               break;
 664 +                       case 'f':
 665 +                               ret = 0;
 666 +                               programname = optarg;
 667 +                               render_file(optarg);
 668 +                               goto done;
 669 +               }
 670 +       }
 671 +       argc -= optind;
 672 +       argv += optind;
 673 +
 674 +       if (argc < 1) {
 675 +               fprintf(stderr, "Invalid argument.\n");
 676 +               goto done;
 677 +       }
 678 +
 679 +       ret = run_awxscript(*argv);
 680 +
 681 +done:
 682 +       exit(ret);
 683 +}
 684 +
 685 +/* entry point for awx applet */
 686 +int awx_main(int argc, char **argv)
 687 +{
 688 +       is_awx = 1;
 689 +       return awk_main(argc, argv);
 690 +}
 691 +
 692 diff -purN bb.old/editors/Config.in bb.dev/editors/Config.in
 693 --- bb.old/editors/Config.in    2007-01-24 22:34:50.000000000 +0100
 694 +++ bb.dev/editors/Config.in    2007-03-11 06:19:51.469380160 +0100
 695 @@ -12,6 +12,13 @@ config AWK
 696           Awk is used as a pattern scanning and processing language.  This is
 697           the BusyBox implementation of that programming language.
 698
 699 +config AWX
 700 +       bool "Enable awx (awk web extension)"
 701 +       default n
 702 +       depends on AWK
 703 +       help
 704 +         awx - awk web extension
 705 +
 706  config FEATURE_AWK_MATH
 707         bool "Enable math functions (requires libm)"
 708         default y
 709 diff -purN bb.old/include/applets.h bb.dev/include/applets.h
 710 --- bb.old/include/applets.h    2007-03-06 19:38:07.355081000 +0100
 711 +++ bb.dev/include/applets.h    2007-03-07 02:12:24.280681880 +0100
 712 @@ -60,6 +60,7 @@ USE_ARP(APPLET(arp, _BB_DIR_SBIN, _BB_SU
 713  USE_ARPING(APPLET(arping, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
 714  USE_ASH(APPLET_NOUSAGE(ash, ash, _BB_DIR_BIN, _BB_SUID_NEVER))
 715  USE_AWK(APPLET(awk, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
 716 +USE_AWX(APPLET_NOUSAGE(awx, awx, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
 717  USE_BASENAME(APPLET(basename, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
 718  USE_BBCONFIG(APPLET(bbconfig, _BB_DIR_BIN, _BB_SUID_NEVER))
 719  //USE_BBSH(APPLET(bbsh, _BB_DIR_BIN, _BB_SUID_NEVER))
 720 diff -purN bb.old/include/cgi.h bb.dev/include/cgi.h
 721 --- bb.old/include/cgi.h        1970-01-01 01:00:00.000000000 +0100
 722 +++ bb.dev/include/cgi.h        2007-03-11 18:58:10.708444448 +0100
 723 @@ -0,0 +1,8 @@
 724 +#ifndef CGI_H
 725 +#define CGI_H
 726 +
 727 +typedef enum { FORM_VAR, COOKIE_VAR } vartype;
 728 +typedef void (*var_handler) (vartype, char *, char *);
 729 +int cgi_init(var_handler);
 730 +
 731 +#endif
 732 diff -purN bb.old/libbb/cgi.c bb.dev/libbb/cgi.c
 733 --- bb.old/libbb/cgi.c  1970-01-01 01:00:00.000000000 +0100
 734 +++ bb.dev/libbb/cgi.c  2007-03-11 19:02:04.691873560 +0100
 735 @@ -0,0 +1,457 @@
 736 +/* --------------------------------------------------------------------------
 737 + * functions for processing cgi form data
 738 + * Copyright (C) 2007 by Felix Fietkau <nbd@openwrt.org>
 739 + *
 740 + * parts taken from the core of haserl.cgi - a poor-man's php for embedded/lightweight environments
 741 + * $Id: haserl.c,v 1.13 2004/11/10 17:59:35 nangel Exp $
 742 + * Copyright (c) 2003,2004    Nathan Angelacos (nangel@users.sourceforge.net)
 743 + *
 744 + * This program is free software; you can redistribute it and/or modify
 745 + * it under the terms of the GNU General Public License as published by
 746 + * the Free Software Foundation; either version 2 of the License, or
 747 + * (at your option) any later version.
 748 + *
 749 + * This program is distributed in the hope that it will be useful,
 750 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
 751 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 752 + * General Public License for more details.
 753 + *
 754 + * You should have received a copy of the GNU General Public License
 755 + * along with this program; if not, write to the Free Software
 756 + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 757 + *
 758 + * -----
 759 + * The x2c() and unescape_url() routines were taken from
 760 + *  http://www.jmarshall.com/easy/cgi/getcgi.c.txt
 761 + *
 762 + * The comments in that text file state:
 763 + *
 764 + ***  Written in 1996 by James Marshall, james@jmarshall.com, except
 765 + ***  that the x2c() and unescape_url() routines were lifted directly
 766 + ***  from NCSA's sample program util.c, packaged with their HTTPD.
 767 + ***     For the latest, see http://www.jmarshall.com/easy/cgi/
 768 + * -----
 769 + *
 770 + ------------------------------------------------------------------------- */
 771 +
 772 +#include <stdio.h>
 773 +#include <unistd.h>
 774 +#include <time.h>
 775 +#include <sys/mman.h>
 776 +#include <sys/types.h>
 777 +#include <sys/wait.h>
 778 +#include <sys/stat.h>
 779 +#include <sys/fcntl.h>
 780 +#include <stdlib.h>
 781 +#include <string.h>
 782 +#include <cgi.h>
 783 +
 784 +#ifndef MAX_UPLOAD_KB
 785 +#define MAX_UPLOAD_KB 2048
 786 +#endif
 787 +#define TEMPDIR "/tmp"
 788 +
 789 +static int global_upload_size = 0;
 790 +static int ReadMimeEncodedInput(char *qs);
 791 +static var_handler do_putvar = NULL;
 792 +
 793 +/*
 794 + * Convert 2 char hex string into char it represents
 795 + * (from http://www.jmarshall.com/easy/cgi)
 796 + */
 797 +static char x2c (char *what) {
 798 +       char digit;
 799 +
 800 +       digit=(what[0] >= 'A' ? ((what[0] & 0xdf) - 'A')+10 : (what[0] - '0'));
 801 +       digit *=16;
 802 +       digit+=(what[1] >= 'A' ? ((what[1] & 0xdf) - 'A')+10 : (what[1] - '0'));
 803 +
 804 +       return digit;
 805 +}
 806 +
 807 +/*
 808 + * unsescape %xx to the characters they represent
 809 + */
 810 +
 811 +static void unescape_url (char *url) {
 812 +       int  i,j;
 813 +
 814 +       for (i=0, j=0; url[j]; ++i, ++j) {
 815 +               if ((url[i] = url[j]) == '%') {
 816 +                       url[i] = x2c(&url[j+1]);
 817 +                       j+=2;
 818 +               }
 819 +       }
 820 +       url[i]='\0';
 821 +}
 822 +
 823 +static inline void put_var(vartype type, char *var)
 824 +{
 825 +       char *val;
 826 +
 827 +       if (!do_putvar)
 828 +               return;
 829 +
 830 +       val = strchr(var, '=');
 831 +       if (!val)
 832 +               return;
 833 +
 834 +       *val = 0;
 835 +       val++;
 836 +       do_putvar(type, var, val);
 837 +
 838 +       return;
 839 +}
 840 +
 841 +
 842 +/* CookieVars ()
 843 + * if HTTP_COOKIE is passed as an environment variable,
 844 + * attempt to parse its values into environment variables
 845 + */
 846 +static void CookieVars (void)
 847 +{
 848 +       char *qs;
 849 +       char *token;
 850 +
 851 +       if (getenv("HTTP_COOKIE") != NULL)
 852 +               qs=strdup(getenv("HTTP_COOKIE"));
 853 +       else
 854 +               return;
 855 +
 856 +       /** split on; to extract name value pairs */
 857 +       token=strtok(qs, ";");
 858 +       while (token) {
 859 +               // skip leading spaces
 860 +               while ( token[0] == ' ' )
 861 +                       token++;
 862 +
 863 +               put_var(COOKIE_VAR, token);
 864 +
 865 +               token = strtok(NULL, ";");
 866 +       }
 867 +       free (qs);
 868 +}
 869 +
 870 +/*
 871 + * Read cgi variables from query string, and put in environment
 872 + */
 873 +static int ReadCGIQueryString (void)
 874 +{
 875 +       char *qs;
 876 +       char *token;
 877 +       int i;
 878 +
 879 +       if (getenv("QUERY_STRING") != NULL)
 880 +               qs=strdup(getenv("QUERY_STRING"));
 881 +       else
 882 +               return 0;
 883 +
 884 +       /* change plusses into spaces */
 885 +       for (i=0; qs[i]; i++ ) { if (qs[i] == '+' ) { qs[i] = ' ';} };
 886 +
 887 +       /** split on & and ; to extract name value pairs */
 888 +
 889 +       token=strtok(qs, "&;");
 890 +       while (token) {
 891 +               unescape_url(token);
 892 +               put_var(FORM_VAR, token);
 893 +               token=strtok(NULL, "&;");
 894 +       }
 895 +       free(qs);
 896 +
 897 +       return 0;
 898 +}
 899 +
 900 +
 901 +/*
 902 + * Read cgi variables from stdin (for POST queries)
 903 + * (oh... and if its mime-encoded file upload, we save the
 904 + * file to /tmp; and return the name of the tmp file
 905 + * the cgi script is responsible for disposing of the tmp file
 906 + */
 907 +
 908 +static int ReadCGIPOSTValues (void) {
 909 +       char *qs;
 910 +       int content_length;
 911 +       int i;
 912 +       char *token;
 913 +
 914 +
 915 +       if (getenv("CONTENT_LENGTH") == NULL)
 916 +               return(-1);
 917 +       else
 918 +               content_length = atoi(getenv("CONTENT_LENGTH"));
 919 +
 920 +       /* protect ourselves from 20GB file uploads */
 921 +       if (content_length > MAX_UPLOAD_KB * 1024 ) {
 922 +               /* But we need to finish reading the content */
 923 +               while ( fread( &i, sizeof(int), 1, stdin) == 1 );
 924 +               return -1;
 925 +       }
 926 +
 927 +       if (!(qs=malloc(content_length+1)))
 928 +               return -1;
 929 +
 930 +       /* set the buffer to null, so that a browser messing with less
 931 +          data than content_length won't buffer underrun us */
 932 +       memset(qs, 0 ,content_length+1);
 933 +
 934 +       if ((!fread(qs,content_length,1,stdin) &&
 935 +               (content_length > 0)
 936 +               && !feof(stdin))) {
 937 +
 938 +               free(qs);
 939 +               return -1;
 940 +       }
 941 +
 942 +       if (getenv("CONTENT_TYPE") && (strncasecmp(getenv("CONTENT_TYPE"), "multipart/form-data", 19) == 0)) {
 943 +               /* This is a mime request, we need to go to the mime handler */
 944 +               i=ReadMimeEncodedInput(qs);
 945 +               free(qs);
 946 +
 947 +               return i;
 948 +       }
 949 +
 950 +       /* change plusses into spaces */
 951 +       for (i=0; qs[i]; i++ ) { if (qs[i] == '+' ) { qs[i] = ' ';} };
 952 +
 953 +       /** split on & and ; to extract name value pairs */
 954 +       token=strtok(qs, "&;");
 955 +       while (token) {
 956 +               unescape_url(token);
 957 +               put_var(FORM_VAR, token);
 958 +               token=strtok(NULL, "&;");
 959 +       }
 960 +
 961 +       free(qs);
 962 +
 963 +       return 0;
 964 +}
 965 +
 966 +/*
 967 + *  LineToStr - Scans char and replaces the first "\n" with a "\0";
 968 + *  If it finds a "\r", it does that to; (fix DOS brokennes) returns
 969 + *  the length of the string;
 970 + */
 971 +static int LineToStr (char *string, size_t max) {
 972 +       size_t offset=0;
 973 +
 974 +       while ((offset < max) && (string[offset] != '\n') && (string[offset] != '\r'))
 975 +               offset++;
 976 +
 977 +       if (string[offset] == '\r') {
 978 +               string[offset]='\0';
 979 +               offset++;
 980 +       }
 981 +       if (string[offset] == '\n') {
 982 +               string[offset]='\0';
 983 +               offset++;
 984 +       }
 985 +
 986 +       return offset;
 987 +}
 988 +
 989 +
 990 +/*
 991 + * ReadMimeEncodedInput - handles things that are mime encoded
 992 + * takes a pointer to the input; returns 0 on success
 993 + */
 994 +
 995 +static int ReadMimeEncodedInput(char *qs)
 996 +{
 997 +       char    *boundary;
 998 +       char    *ct;
 999 +       int     i;
1000 +       int     datastart;
1001 +       size_t  cl;
1002 +       size_t  offset;
1003 +       char    *envname;
1004 +       char    *filename;
1005 +       char    *ptr;
1006 +       int     line;
1007 +       char    tmpname[] = TEMPDIR "/XXXXXX";
1008 +       int     fd;
1009 +       /* we should only get here if the content type was set. Segfaults happen
1010 +          if Content_Type is null */
1011 +
1012 +       if (getenv("CONTENT_LENGTH") == NULL)
1013 +               /* No content length?! */
1014 +               return(-1);
1015 +
1016 +       cl=atoi(getenv("CONTENT_LENGTH"));
1017 +
1018 +       /* we do this 'cause we can't mess with the real env. variable - it would
1019 +        * overwrite the environment - I tried.
1020 +        */
1021 +       i=strlen(getenv("CONTENT_TYPE"))+1;
1022 +       ct=malloc(i);
1023 +       if (ct)
1024 +               memcpy(ct, getenv("CONTENT_TYPE"), i);
1025 +       else
1026 +               return(-1);
1027 +
1028 +       i=(int) NULL;
1029 +       if (ct != NULL) {
1030 +               while (i < strlen(ct) && (strncmp("boundary=", &ct[i], 9) != 0))
1031 +                       i++;
1032 +       }
1033 +       if (i == strlen(ct)) {
1034 +               /* no boundary informaiton found */
1035 +               free(ct);
1036 +               return -1;
1037 +       }
1038 +       boundary=&ct[i+7];
1039 +       /* add two leading -- to the boundary */
1040 +       boundary[0]='-';
1041 +       boundary[1]='-';
1042 +
1043 +       /* begin the big loop.  Look for:
1044 +               --boundary
1045 +               Content-Disposition: form-data;  name="......."
1046 +               ....
1047 +               <blank line>
1048 +               content
1049 +               --boundary
1050 +               Content-Disposition: form-data; name="....." filename="....."
1051 +               ...
1052 +               <blank line>
1053 +               --boundary--
1054 +               eof
1055 +       */
1056 +
1057 +       offset=0;
1058 +       while (offset < cl) {
1059 +               /* first look for boundary */
1060 +               while ((offset < cl) && (memcmp(&qs[offset], boundary, strlen(boundary))))
1061 +                       offset++;
1062 +
1063 +               /* if we got here and we ran off the end, its an error          */
1064 +               if (offset >= cl) {
1065 +                       free(ct);
1066 +                       return -1;
1067 +               }
1068 +
1069 +               /* if the two characters following the boundary are --,         */
1070 +               /* then we are at the end, exit                                 */
1071 +               if (memcmp(&qs[offset+strlen(boundary)], "--", 2) == 0) {
1072 +                       offset+=2;
1073 +                       break;
1074 +               }
1075 +               /* find where the offset should be */
1076 +               line=LineToStr(&qs[offset], cl-offset);
1077 +               offset+=line;
1078 +
1079 +               /* Now we're going to look for content-disposition              */
1080 +               line=LineToStr(&qs[offset], cl-offset);
1081 +               if (strncasecmp(&qs[offset], "Content-Disposition", 19) != 0) {
1082 +                       /* hmm... content disposition was not where we expected it */
1083 +                       free(ct);
1084 +                       return -1;
1085 +               }
1086 +               /* Found it, so let's go find "name="                           */
1087 +               if (!(envname=strstr(&qs[offset], "name="))) {
1088 +                       /* now name= is missing?!                               */
1089 +                       free(ct);
1090 +                       return(-1);
1091 +               } else
1092 +                       envname+=6;
1093 +
1094 +               /* is there a filename tag?                                     */
1095 +               if ((filename=strstr(&qs[offset], "filename="))!= NULL)
1096 +                       filename+=10;
1097 +               else
1098 +                       filename=NULL;
1099 +
1100 +               /* make envname and filename ASCIIZ                             */
1101 +               for (i=0; (envname[i] != '"') && (envname[i] != '\0'); i++);
1102 +
1103 +               envname[i] = '\0';
1104 +               if (filename) {
1105 +                       for (i=0; (filename[i] != '"') && (filename[i] != '\0'); i++);
1106 +                       filename[i] = '\0';
1107 +               }
1108 +               offset+=line;
1109 +
1110 +               /* Ok, by some miracle, we have the name; let's skip till we    */
1111 +               /* come to a blank line                                         */
1112 +               line=LineToStr(&qs[offset], cl-offset);
1113 +               while (strlen(&qs[offset]) > 1) {
1114 +                       offset+=line;
1115 +                       line=LineToStr(&qs[offset], cl-offset);
1116 +               }
1117 +               offset+=line;
1118 +               datastart=offset;
1119 +               /* And we go back to looking for a boundary */
1120 +               while ((offset < cl) && (memcmp(&qs[offset], boundary, strlen(boundary))))
1121 +                       offset++;
1122 +
1123 +               /* strip [cr] lf */
1124 +               if ((qs[offset-1] == '\n') && (qs[offset-2] == '\r'))
1125 +                       offset-=2;
1126 +               else
1127 +                       offset-=1;
1128 +
1129 +               qs[offset]=0;
1130 +
1131 +               /* ok, at this point, we know where the name is, and we know    */
1132 +               /* where the content is... we have to do one of two things      */
1133 +               /* based on whether its a file or not                           */
1134 +               if (filename==NULL) { /* its not a file, so its easy            */
1135 +                       /* just jam the content after the name          */
1136 +                       memcpy(&envname[strlen(envname)+1], &qs[datastart], offset-datastart+1);
1137 +                       envname[strlen(envname)]='=';
1138 +                       put_var(FORM_VAR, envname);
1139 +               } else {        /* handle the fileupload case           */
1140 +                       if (offset-datastart) {  /* only if they uploaded */
1141 +                               if ( global_upload_size == 0 ) {
1142 +                                       return -1;
1143 +                               }
1144 +                               /*  stuff in the filename */
1145 +                               ptr= calloc ( sizeof (char), strlen(envname)+strlen(filename)+2+5 );
1146 +                               sprintf (ptr, "%s_name=%s", envname, filename);
1147 +                               put_var(FORM_VAR, ptr);
1148 +                               free(ptr);
1149 +
1150 +                               fd=mkstemp(tmpname);
1151 +
1152 +                               if (fd == -1)
1153 +                                       return(-1);
1154 +
1155 +                               write(fd, &qs[datastart], offset-datastart);
1156 +                               close(fd);
1157 +                               ptr= calloc (sizeof(char), strlen(envname)+strlen(tmpname)+2);
1158 +                               sprintf (ptr, "%s=%s", envname, tmpname);
1159 +                               put_var(FORM_VAR, ptr);
1160 +                               free(ptr);
1161 +                       }
1162 +               }
1163 +       }
1164 +       free(ct);
1165 +       return 0;
1166 +}
1167 +
1168 +
1169 +/*-------------------------------------------------------------------------
1170 + *
1171 + * Main
1172 + *
1173 + *------------------------------------------------------------------------*/
1174 +
1175 +int cgi_init(var_handler putvar_handler)
1176 +{
1177 +       int     retval = 0;
1178 +
1179 +       do_putvar = putvar_handler;
1180 +
1181 +       /* Read the current environment into our chain */
1182 +       CookieVars();
1183 +       if (getenv("REQUEST_METHOD")) {
1184 +               if (strcasecmp(getenv("REQUEST_METHOD"), "GET") == 0)
1185 +                       retval = ReadCGIQueryString();
1186 +
1187 +               if (strcasecmp(getenv("REQUEST_METHOD"), "POST") == 0)
1188 +                       retval = ReadCGIPOSTValues();
1189 +       }
1190 +
1191 +       return retval;
1192 +}
1193 diff -purN bb.old/libbb/Kbuild bb.dev/libbb/Kbuild
1194 --- bb.old/libbb/Kbuild 2007-03-06 19:38:07.361080000 +0100
1195 +++ bb.dev/libbb/Kbuild 2007-03-11 18:40:51.384445712 +0100
1196 @@ -118,3 +118,6 @@ lib-$(CONFIG_GREP) += xregcomp.o
1197  lib-$(CONFIG_MDEV) += xregcomp.o
1198  lib-$(CONFIG_LESS) += xregcomp.o
1199  lib-$(CONFIG_DEVFSD) += xregcomp.o
1200 +
1201 +lib-$(CONFIG_AWX) += cgi.o
1202 +