lib/modules/swfaction.c

   1 /* swfaction.c
   2
   3    Actionscript generation and parsing routines
   4
   5    Extension module for the rfxswf library.
   6    Part of the swftools package.
   7
   8    Copyright (c) 2001 Matthias Kramm <kramm@quiss.org>
   9
  10    This file is distributed under the GPL, see file COPYING for details
  11
  12 */
  13
  14 #include "../rfxswf.h"
  15
  16 #define MAX_LOOKUP 1024   // make cross references in dumps
  17
  18 struct Action
  19 {
  20     int version;
  21     char*name;
  22     U8 op;
  23     char*flags;
  24 } static actions[] =
  25 {
  26 /*
  27 f: frame (word)
  28 u: url (string)
  29 t: target (string)
  30 l: label (string)
  31 C: constant pool header (byte)
  32 c: constant pool entry (string)
  33 s: skip (byte) (number of actions)
  34 m: method (byte) swf_GetUrl2:(0=none, 1=get, 2=post)/GotoFrame2:(1=play)
  35 b: branch (word) (number of bytes)
  36 p (push): type(byte), type=0:string, type=1:double
  37 {: define function (name (string), num (word), params (num strings), codesize (word)
  38 o: object (string)
  39 r: register (byte)
  40  */
  41 {3,"End", 0x00, ""},
  42 {3,"GotoFrame", 0x81, "f"},
  43 {4,"GotoFrame2", 0x9f, "m"}, // -1 (/Movieclip:3)
  44 {3,"GetUrl", 0x83, "ul"},
  45 {4,"GetUrl2", 0x9a, "m"}, //-2
  46 {3,"NextFrame", 0x04, ""},
  47 {3,"PreviousFrame", 0x05, ""},
  48 {3,"Play", 0x06, ""},
  49 {3,"Stop", 0x07, ""},
  50 {3,"ToggleQuality", 0x08, ""},
  51 {3,"StopSounds", 0x09, ""},
  52 {3,"WaitForFrame", 0x8a, "fs"},
  53 {4,"WaitForFrame2", 0x8d, "s"}, // -1
  54 {3,"SetTarget", 0x8b, "t"},
  55 {4,"SetTarget2", 0x20, ""}, //-1
  56 {3,"GotoLabel", 0x8c, "l"},
  57 {4,"Add", 0x0a, ""}, //  -2, +1
  58 {4,"Multiply", 0x0c, ""}, //  -2, +1
  59 {4,"Divide", 0x0d, ""}, //  -2, +1
  60 {4,"Subtract", 0x0b, ""}, //  -2, +1
  61 {4,"Less", 0x0f, ""}, //  -2, +1
  62 {4,"Equals", 0x0e, ""}, //  -2, +1
  63 {4,"And", 0x10, ""}, //  -2, +1
  64 {4,"Or", 0x11, ""}, //  -2, +1
  65 {4,"Not", 0x12, ""}, //  -1, +1
  66 {4,"StringAdd", 0x21, ""}, // -2,+1
  67 {4,"StringLength", 0x14, ""}, // -1, +1
  68 {4,"MBStringLength", 0x31, ""}, // -1, +1
  69 {4,"StringEquals", 0x13, ""}, // -2, +1
  70 {4,"StringLess", 0x29, ""}, //-2, +1
  71 {4,"StringExtract", 0x15, ""}, // -3, +1
  72 {4,"MBStringExtract", 0x35, ""}, //-3 +1
  73 {4,"Push", 0x96, "p"}, //  +1
  74 {4,"Pop", 0x17, ""}, //  -1
  75 {4,"ToInteger", 0x18, ""}, // -1, +1
  76 {4,"CharToAscii", 0x32, ""}, // -1, +1
  77 {4,"AsciiToChar", 0x33, ""}, // -1, +1
  78 {4,"MBCharToAscii", 0x36, ""}, // -1, +1
  79 {4,"MBAsciiToChar", 0x37, ""}, // -1, +1
  80 {4,"Jump", 0x99, "b"},
  81 {4,"If", 0x9d, "b"}, // -1
  82 {4,"Call", 0x9e, ""}, //-1 (frame label/number) (high bit is wrong.)
  83 {4,"GetVariable", 0x1c,""}, // -1, +1
  84 {4,"SetVariable", 0x1d,""}, // -2
  85 {4,"GetProperty", 0x22,""}, //-2, +1
  86 {4,"SetProperty", 0x23, ""}, // -3
  87 {4,"RemoveSprite", 0x25, ""}, //-1
  88 {4,"StartDrag", 0x27, ""}, // -2, -1, (-4)
  89 {4,"EndDrag", 0x28, ""},
  90 {4,"CloneSprite", 0x24, ""}, // -3
  91 {4,"Trace", 0x26, ""}, //-1
  92 {4,"GetTime", 0x34, ""}, //+1
  93 {4,"RandomNumber", 0x30, ""}, //-1,+1
  94 {5,"Modulo", 0x3f,""},
  95 {5,"BitAnd", 0x60,""},
  96 {5,"BitLShift", 0x63,""},
  97 {5,"BitOr", 0x61,""},
  98 {5,"BitRShift", 0x64,""},
  99 {5,"BitURShift", 0x65,""},
 100 {5,"BitXor", 0x62,""},//66?
 101 {5,"Decrement", 0x51,""},
 102 {5,"Increment", 0x50,""},
 103 {5,"PushDuplicate", 0x4c,""},
 104 {5,"StackSwap", 0x4d,""}, //?
 105 {5,"StoreRegister", 0x87,"r"},
 106 {5,"CallFunction", 0x3d,""},
 107 {5,"DefineFunction", 0x9b, "{"},
 108 {5,"Return", 0x3e,""},
 109 {5,"GetMember", 0x4e,""},
 110 {5,"SetMember", 0x4f,""},
 111 {5,"CallMethod", 0x52,""},
 112 {5,"Constantpool", 0x88, "Cc"},
 113 {5,"DefineLocal", 0x3c,""},
 114 {5,"DefineLocal2", 0x41,""},
 115 {5,"Makehash", 0x43, ""}, //??
 116 {5,"Delete", 0x3a,""}, //?
 117 {5,"Delete2", 0x3b,""},
 118 {5,"Enumerate", 0x46,""},
 119 {5,"Equals2", 0x49,""},
 120 {5,"InitArray", 0x42,""}, // InitObject?
 121 {5,"NewMethod", 0x53,""}, //?
 122 {5,"NewObject", 0x40,""},
 123 {5,"TargetPath", 0x45,""}, //?
 124 {5,"With", 0x94, "o"},
 125 {5,"ToNumber", 0x4a,""}, //?
 126 {5,"ToString", 0x4b,""}, //?
 127 {5,"TypeOf", 0x44,""},
 128 {5,"Add2", 0x47,""},
 129 {5,"Less2", 0x48,""}
 130 };
 131 static int definedactions = sizeof(actions)/sizeof(struct Action);
 132
 133 ActionTAG* swf_ActionGet(TAG*tag)
 134 {
 135     U8 op = 1;
 136     int length;
 137     ActionTAG tmp;
 138     ActionTAG*action = &tmp;
 139     U8*data;
 140     while(op)
 141     {
 142         action->next = (ActionTAG*)malloc(sizeof(ActionTAG));
 143         action->next->prev = action;
 144         action->next->next = 0;
 145         action = action->next;
 146
 147         op = swf_GetU8(tag);
 148         if(op<0x80)
 149             length = 0;
 150         else
 151             length = swf_GetU16(tag);
 152
 153         if(length) {
 154             data = malloc(length);
 155             swf_GetBlock(tag, data, length);
 156         } else {
 157           data = 0;
 158         }
 159         action->op = op;
 160         action->len = length;
 161         action->data = data;
 162         action->parent = tag;
 163     }
 164     return tmp.next;
 165 }
 166
 167 void swf_ActionFree(ActionTAG*action)
 168 {
 169     while(action)
 170     {
 171         ActionTAG*tmp;
 172         if(action->data && action->data != action->tmp)
 173             free(action->data);
 174         tmp = action;
 175         action=action->next;
 176         free(tmp);
 177     }
 178 }
 179
 180 void swf_ActionSet(TAG*tag, ActionTAG*action)
 181 {
 182     while(action)
 183     {
 184         swf_SetU8(tag, action->op);
 185         if(action->op & 128)
 186           swf_SetU16(tag, action->len);
 187
 188         swf_SetBlock(tag, action->data, action->len);
 189
 190         action = action->next;
 191     }
 192 }
 193
 194 int OpAdvance(char c, char*data)
 195 {
 196     switch (c)
 197     {
 198         case 'f':
 199             return 2;
 200         case 'u':
 201             return strlen(data)+1;
 202         case 't':
 203             return strlen(data)+1;
 204         case 'l':
 205             return strlen(data)+1;
 206         case 'c':
 207             return strlen(data)+1;
 208         case 'C':
 209             return 2;
 210         case 's':
 211             return 1;
 212         case 'm':
 213             return 1;
 214         case 'b':
 215             return 2;
 216         case 'p': {
 217             U8 type = *data++;
 218             if(type == 0) {
 219                 return 1+strlen(data)+1; //string
 220             } else if (type == 1) {
 221                 return 1+4; //float
 222             } else if (type == 2) {
 223                 return 1+0; //NULL
 224             } else if (type == 4) {
 225                 return 1+1; //register
 226             } else if (type == 5) {
 227                 return 1+1; //bool
 228             } else if (type == 6) {
 229                 return 1+8; //double
 230             } else if (type == 7) {
 231                 return 1+4; //int
 232             } else if (type == 8) {
 233                 return 1+1; //lookup
 234             } else return 1;
 235             break;
 236         }
 237     }
 238     return 0;
 239 }
 240
 241 /* TODO: * this should be in swfdump.c */
 242 void swf_DumpActions(ActionTAG*atag, char*prefix)
 243 {
 244     int t;
 245     U8*data;
 246     char* cp;
 247     int entry = 0;
 248
 249 #ifdef MAX_LOOKUP
 250
 251     char * lookup[MAX_LOOKUP];
 252     memset(lookup,0x00,sizeof(lookup));
 253
 254 #endif
 255
 256    if (!prefix)
 257         prefix="";
 258
 259     while(atag)
 260     {
 261         U8 poollen = 0;
 262         for(t=0;t<definedactions;t++)
 263             if(actions[t].op == atag->op)
 264                 break;
 265
 266         if(t==definedactions) {
 267             printf("%s (%5d bytes) action: %02x\n", prefix, atag->len, atag->op);
 268             atag = atag->next;
 269             continue;
 270         }
 271         printf("%s (%5d bytes) action: %s", prefix, atag->len, actions[t].name);
 272         cp = actions[t].flags;
 273         data = atag->data;
 274         if(atag->len) //TODO: check for consistency: should we have a length?
 275         while(*cp)
 276         {
 277             switch(*cp)
 278             {
 279                 case 'f': { //frame
 280                     printf(" %d", data[0]+256*data[1]);
 281                 } break;
 282                 case 'u': {
 283                     printf(" URL:\"%s\"", data);
 284                 } break;
 285                 case 't': {
 286                     printf(" Target:\"%s\"", data);
 287                 } break;
 288                 case 'l': {
 289                     printf(" Label:\"%s\"", data);
 290                 } break;
 291                 case 'c': {
 292                     printf(" String:\"%s\"", data);
 293 #ifdef MAX_LOOKUP
 294                     if (entry<MAX_LOOKUP)
 295                       lookup[entry++] = strdup(data);
 296 #endif
 297                 } break;
 298                 case 'C': {
 299                     poollen = *data;
 300                     entry = 0;
 301                     printf("(%d entries)", poollen);
 302                 } break;
 303                 case 's': {
 304                     printf(" +%d", *data);
 305                 } break;
 306                 case 'm': {
 307                     //m: method (byte) url:(0=none, 1=get, 2=datat)/gf2:(1=play)
 308                     printf(" %d", *data);
 309                 } break;
 310                 case 'b': {
 311                     printf(" %d", data[0]+256*data[1]);
 312                 } break;
 313                 case 'p': {
 314                     U8 type = *data;
 315                     unsigned char*value = data+1;
 316                     if(type == 0) {
 317                         printf(" String:\"%s\"", value);
 318                     } else if (type == 1) {
 319                         U32 f = value[0]+(value[1]<<8)+
 320                                 (value[2]<<16)+(value[3]<<24);
 321                         printf(" Float:%f", *(float*)&f);
 322                     } else if (type == 2) {
 323                         printf(" NULL");
 324                     } else if (type == 4) {
 325                         printf(" register:%d", *value);
 326                     } else if (type == 5) {
 327                         printf(" bool:%s", *value?"true":"false");
 328                     } else if (type == 6) {
 329                         U8 a[8];
 330                         int t;
 331 #ifdef WORDS_BIGENDIAN
 332                         for(t=0;t<8;t++)
 333                             a[7-t]=value[t];
 334 #else
 335                         memcpy(a,value,8);
 336 #endif
 337                         printf(" double:%f", *(double*)a);
 338                     } else if (type == 7) {
 339                         printf(" int:%d", value[0]+(value[1]<<8)+
 340                                           (value[2]<<16)+(value[3]<<24));
 341                     } else if (type == 8) {
 342                         printf(" Lookup:%d", *value);
 343 #ifdef MAX_LOOKUP
 344                         if (lookup[*value])
 345                           printf(" (\"%s\")",lookup[*value]);
 346 #endif
 347                     } else {
 348                         printf(" UNKNOWN[%02x]",type);
 349                     }
 350                 } break;
 351             }
 352             data += OpAdvance(*cp, data);
 353             if((*cp!='c' || !poollen) &&
 354                (*cp!='p' || !(data<&atag->data[atag->len])))
 355                 cp++;
 356             if(poollen)
 357                 poollen--;
 358         }
 359
 360         if(data < atag->data + atag->len)
 361         {
 362             int nl = ((atag->data+atag->len)-data);
 363             int t;
 364             printf(" (remainder of %d bytes:\"", nl);
 365             for(t=0;t<nl;t++) {
 366                 if(data[t]<32)
 367                     printf("\\%d",data[t]);
 368                 else
 369                     printf("%c", data[t]);
 370             }
 371             printf("\")");
 372         }
 373         printf("\n");
 374         atag = atag->next;
 375     }
 376
 377 #ifdef MAX_LOOKUP
 378   for (t=0;t<MAX_LOOKUP;t++) if (lookup[t]) free(lookup[t]);
 379 #endif
 380 }
 381
 382 static const char TYPE_URL = 1;
 383 static const char TYPE_TARGET = 2;
 384 static const char TYPE_STRING = 4;
 385
 386 int swf_ActionEnumerate(ActionTAG*atag, char*(*callback)(char*), int type)
 387 {
 388     int t;
 389     U8*data;
 390     char* cp;
 391     int count = 0;
 392     while(atag)
 393     {
 394         U8 poollen = 0;
 395         for(t=0;t<definedactions;t++)
 396             if(actions[t].op == atag->op)
 397                 break;
 398
 399         if(t==definedactions) {
 400             // unknown actiontag
 401             atag = atag->next;
 402             count++;
 403             continue;
 404         }
 405         cp = actions[t].flags;
 406         data = atag->data;
 407         if(atag->len) {
 408             while(*cp) {
 409                 U8 * replacepos = 0;
 410                 int replacelen = 0;
 411                 U8 * replacement = 0;
 412                 switch(*cp)
 413                 {
 414                     case 'u': {
 415                         if(type&TYPE_URL)
 416                         {
 417                             replacelen = strlen(data);
 418                             replacepos = data;
 419                             replacement = callback(data); // may be null
 420                         }
 421                     } break;
 422                     case 't': {
 423                         if(type&TYPE_TARGET)
 424                         {
 425                             replacelen = strlen(data);
 426                             replacepos = data;
 427                             replacement = callback(data); // may be null
 428                         }
 429                     } break;
 430                     case 'c': {
 431                         if(type&TYPE_STRING)
 432                         {
 433                             replacelen = strlen(data);
 434                             replacepos = data;
 435                             replacement = callback(data); // may be null
 436                         }
 437                     } break;
 438                     case 'C': {
 439                         poollen = (*data);
 440                     } break;
 441                     case 'o': {
 442                     } break;
 443                     case 'p': {
 444                         U8 datatype = *data;
 445                         char*value = &data[1];
 446                         if(datatype == 0) { //string
 447                             if(type&TYPE_STRING)
 448                             {
 449                                 replacelen = strlen(value);
 450                                 replacepos = value;
 451                                 replacement = callback(value); // may be null
 452                             }
 453                         } else if (datatype == 8) { //lookup
 454                         }
 455                     } break;
 456                 }
 457                 data += OpAdvance(*cp, data);
 458                 if(*cp!='c' || !poollen)
 459                     cp++;
 460                 if(poollen)
 461                     poollen--;
 462
 463                 if(replacement)
 464                 {
 465                     int newlen = strlen(replacement);
 466                     char * newdata = malloc(atag->len - replacelen + newlen);
 467                     int rpos = replacepos - atag->data;
 468                     memcpy(newdata, atag->data, rpos);
 469                     memcpy(&newdata[rpos], replacement, newlen);
 470                     memcpy(&newdata[rpos+newlen], &replacepos[replacelen],
 471                             &data[atag->len] - &replacepos[replacelen]);
 472                     free(atag->data);
 473                     atag->data = newdata;
 474                     data = &atag->data[rpos+newlen+1];
 475                 }
 476             }
 477         }
 478         atag = atag->next;
 479         count ++;
 480     }
 481     return count;
 482 }
 483
 484 void swf_ActionEnumerateTargets(ActionTAG*atag, char*(*callback)(char*))
 485 {
 486     swf_ActionEnumerate(atag, callback, TYPE_TARGET);
 487 }
 488 void swf_ActionEnumerateStrings(ActionTAG*atag, char*(*callback)(char*))
 489 {
 490     swf_ActionEnumerate(atag, callback, TYPE_STRING);
 491 }
 492 void swf_ActionEnumerateURLs(ActionTAG*atag, char*(*callback)(char*))
 493 {
 494     swf_ActionEnumerate(atag, callback, TYPE_URL);
 495 }
 496
 497 static ActionTAG * currentatag;
 498
 499 ActionTAG* swf_ActionStart()
 500 {
 501     currentatag = (ActionTAG*)malloc(sizeof(ActionTAG));
 502     currentatag->prev = 0;
 503     currentatag->parent = 0;
 504     currentatag->data = 0;
 505     currentatag->len = 0;
 506     return currentatag;
 507 }
 508
 509 void swf_ActionEnd()
 510 {
 511     currentatag->prev->next = 0;
 512     free(currentatag);
 513 }
 514
 515 void swf_AddActionTAG(U8 op, U8*data, U16 len)
 516 {
 517     currentatag->next = (ActionTAG*)malloc(sizeof(ActionTAG));
 518     currentatag->next->prev = currentatag;
 519     currentatag->parent = 0;
 520     currentatag->data = data;
 521     currentatag->len = len;
 522     currentatag->op = op;
 523     currentatag = currentatag->next;
 524 }
 525
 526 ActionMarker action_setMarker()
 527 {
 528     ActionMarker m;
 529     m.atag = currentatag;
 530     return m;
 531 }
 532
 533 int inline ActionTagSize(ActionTAG*atag)
 534 {
 535     return (atag->op&0x80)?3+(atag->len):1+0;
 536 }
 537
 538
 539 #define ACTION_END            0x00
 540 #define ACTION_NEXTFRAME      0x04
 541 #define ACTION_PREVIOUSFRAME  0x05
 542 #define ACTION_PLAY           0x06
 543 #define ACTION_STOP           0x07
 544 #define ACTION_TOGGLEQUALITY  0x08
 545 #define ACTION_STOPSOUNDS     0x09
 546 #define ACTION_ADD            0x0a
 547 #define ACTION_SUBTRACT       0x0b
 548 #define ACTION_MULTIPLY       0x0c
 549 #define ACTION_DIVIDE         0x0d
 550 #define ACTION_EQUALS         0x0e
 551 #define ACTION_LESS           0x0f
 552 #define ACTION_AND            0x10
 553 #define ACTION_OR             0x11
 554 #define ACTION_NOT            0x12
 555 #define ACTION_STRINGEQUALS   0x13
 556 #define ACTION_STRINGLENGTH   0x14
 557 #define ACTION_STRINGEXTRACT  0x15
 558 #define ACTION_POP            0x17
 559 #define ACTION_TOINTEGER      0x18
 560 #define ACTION_GETVARIABLE    0x1c
 561 #define ACTION_SETVARIABLE    0x1d
 562 #define ACTION_SETTARGET2     0x20
 563 #define ACTION_STRINGADD      0x21
 564 #define ACTION_GETPROPERTY    0x22
 565 #define ACTION_SETPROPERTY    0x23
 566 #define ACTION_CLONESPRITE    0x24
 567 #define ACTION_REMOVESPRITE   0x25
 568 #define ACTION_TRACE          0x26
 569 #define ACTION_STARTDRAG      0x27
 570 #define ACTION_ENDDRAG        0x28
 571 #define ACTION_STRINGLESS     0x29
 572 #define ACTION_RANDOMNUMBER   0x30
 573 #define ACTION_MBSTRINGLENGTH 0x31
 574 #define ACTION_CHARTOASCII    0x32
 575 #define ACTION_ASCIITOCHAR    0x33
 576 #define ACTION_GETTIME        0x34
 577 #define ACTION_MBSTRINGEXTRACT 0x35
 578 #define ACTION_MBCHARTOASCII  0x36
 579 #define ACTION_MBASCIITOCHAR  0x37
 580 #define ACTION_DELETE         0x3a
 581 #define ACTION_DELETE2        0x3b
 582 #define ACTION_DEFINELOCAL    0x3c
 583 #define ACTION_CALLFUNCTION   0x3d
 584 #define ACTION_RETURN         0x3e
 585 #define ACTION_MODULO         0x3f
 586 #define ACTION_NEWOBJECT      0x40
 587 #define ACTION_DEFINELOCAL2   0x41
 588 #define ACTION_INITARRAY      0x42
 589 #define ACTION_MAKEHASH       0x43
 590 #define ACTION_TYPEOF         0x44
 591 #define ACTION_TARGETPATH     0x45
 592 #define ACTION_ENUMERATE      0x46
 593 #define ACTION_ADD2           0x47
 594 #define ACTION_LESS2          0x48
 595 #define ACTION_EQUALS2        0x49
 596 #define ACTION_TONUMBER       0x4a
 597 #define ACTION_TOSTRING       0x4b
 598 #define ACTION_PUSHDUPLICATE  0x4c
 599 #define ACTION_STACKSWAP      0x4d
 600 #define ACTION_GETMEMBER      0x4e
 601 #define ACTION_SETMEMBER      0x4f
 602 #define ACTION_INCREMENT      0x50
 603 #define ACTION_DECREMENT      0x51
 604 #define ACTION_CALLMETHOD     0x52
 605 #define ACTION_NEWMETHOD      0x53
 606 #define ACTION_BITAND         0x60
 607 #define ACTION_BITOR          0x61
 608 #define ACTION_BITXOR         0x62
 609 #define ACTION_BITLSHIFT      0x63
 610 #define ACTION_BITRSHIFT      0x64
 611 #define ACTION_BITURSHIFT     0x65
 612 #define ACTION_GOTOFRAME      0x81
 613 #define ACTION_GETURL         0x83
 614 #define ACTION_STOREREGISTER  0x87
 615 #define ACTION_CONSTANTPOOL   0x88
 616 #define ACTION_WAITFORFRAME   0x8a
 617 #define ACTION_SETTARGET      0x8b
 618 #define ACTION_GOTOLABEL      0x8c
 619 #define ACTION_WAITFORFRAME2  0x8d
 620 #define ACTION_WITH           0x94
 621 #define ACTION_PUSH           0x96
 622 #define ACTION_JUMP           0x99
 623 #define ACTION_GETURL2        0x9a
 624 #define ACTION_DEFINEFUNCTION 0x9b
 625 #define ACTION_IF             0x9d
 626 #define ACTION_CALL           0x9e
 627 #define ACTION_GOTOFRAME2     0x9f
 628
 629 void action_fixjump(ActionMarker m1, ActionMarker m2)
 630 {
 631     ActionTAG* a1 = m1.atag;
 632     ActionTAG* a2 = m2.atag;
 633     ActionTAG* a;
 634     int len = 0;
 635     int oplen = 0;
 636     a = a1;
 637
 638     a = a->next; //first one is free
 639     while(a && a!=a2)
 640     {
 641         len += ActionTagSize(a);
 642         oplen ++;
 643         a = a->next;
 644     }
 645     if(!a)
 646     { len = 0;
 647       oplen = 0;
 648       a = a2;
 649       while(a && a!=a1) {
 650           len -= ActionTagSize(a);
 651           oplen --;
 652           a = a->next;
 653       }
 654       if(!a) {
 655           fprintf(stderr, "action_fixjump: couldn't find second tag\n");
 656           return;
 657       }
 658       len -= ActionTagSize(a);
 659       oplen --;
 660     }
 661
 662     if (a1->op == ACTION_IF || a1->op == ACTION_JUMP)
 663     {
 664         *(U16*)(a1->data) = SWAP16(len);
 665     }
 666     else if(a1->op == ACTION_WAITFORFRAME)
 667     {
 668         ((U8*)(a1->data))[2] = oplen;
 669     }
 670     else if(a1->op == ACTION_WAITFORFRAME2)
 671     {
 672         ((U8*)(a1->data))[0] = oplen;
 673     }
 674
 675 }
 676
 677
 678 void action_NextFrame() {swf_AddActionTAG(ACTION_NEXTFRAME, 0, 0);}
 679 void action_PreviousFrame() {swf_AddActionTAG(ACTION_PREVIOUSFRAME, 0, 0);}
 680 void action_Play() {swf_AddActionTAG(ACTION_PLAY, 0, 0);}
 681 void action_Stop() {swf_AddActionTAG(ACTION_STOP, 0, 0);}
 682 void action_ToggleQuality() {swf_AddActionTAG(ACTION_TOGGLEQUALITY, 0, 0);}
 683 void action_StopSounds() {swf_AddActionTAG(ACTION_STOPSOUNDS, 0, 0);}
 684 void action_Add() {swf_AddActionTAG(ACTION_ADD, 0, 0);}
 685 void action_Subtract() {swf_AddActionTAG(ACTION_SUBTRACT, 0, 0);}
 686 void action_Multiply() {swf_AddActionTAG(ACTION_MULTIPLY, 0, 0);}
 687 void action_Divide() {swf_AddActionTAG(ACTION_DIVIDE, 0, 0);}
 688 void action_Equals() {swf_AddActionTAG(ACTION_EQUALS, 0, 0);}
 689 void action_Less() {swf_AddActionTAG(ACTION_LESS, 0, 0);}
 690 void action_And() {swf_AddActionTAG(ACTION_AND, 0, 0);}
 691 void action_Or() {swf_AddActionTAG(ACTION_OR, 0, 0);}
 692 void action_Not() {swf_AddActionTAG(ACTION_NOT, 0, 0);}
 693 void action_StringEquals() {swf_AddActionTAG(ACTION_STRINGEQUALS, 0, 0);}
 694 void action_StringLength() {swf_AddActionTAG(ACTION_STRINGLENGTH, 0, 0);}
 695 void action_StringExtract() {swf_AddActionTAG(ACTION_STRINGEXTRACT, 0, 0);}
 696 void action_Pop() {swf_AddActionTAG(ACTION_POP, 0, 0);}
 697 void action_ToInteger() {swf_AddActionTAG(ACTION_TOINTEGER, 0, 0);}
 698 void action_GetVariable() {swf_AddActionTAG(ACTION_GETVARIABLE, 0, 0);}
 699 void action_SetVariable() {swf_AddActionTAG(ACTION_SETVARIABLE, 0, 0);}
 700 void action_SetTarget2() {swf_AddActionTAG(ACTION_SETTARGET2, 0, 0);}
 701 void action_StringAdd() {swf_AddActionTAG(ACTION_STRINGADD, 0, 0);}
 702 void action_GetProperty() {swf_AddActionTAG(ACTION_GETPROPERTY, 0, 0);}
 703 void action_SetProperty() {swf_AddActionTAG(ACTION_SETPROPERTY, 0, 0);}
 704 void action_CloneSprite() {swf_AddActionTAG(ACTION_CLONESPRITE, 0, 0);}
 705 void action_RemoveSprite() {swf_AddActionTAG(ACTION_REMOVESPRITE, 0, 0);}
 706 void action_Trace() {swf_AddActionTAG(ACTION_TRACE, 0, 0);}
 707 void action_StartDrag() {swf_AddActionTAG(ACTION_STARTDRAG, 0, 0);}
 708 void action_EndDrag() {swf_AddActionTAG(ACTION_ENDDRAG, 0, 0);}
 709 void action_StringLess() {swf_AddActionTAG(ACTION_STRINGLESS, 0, 0);}
 710 void action_RandomNumber() {swf_AddActionTAG(ACTION_RANDOMNUMBER, 0, 0);}
 711 void action_MBStringLength() {swf_AddActionTAG(ACTION_MBSTRINGLENGTH, 0, 0);}
 712 void action_CharToAscii() {swf_AddActionTAG(ACTION_CHARTOASCII, 0, 0);}
 713 void action_AsciiToChar() {swf_AddActionTAG(ACTION_ASCIITOCHAR, 0, 0);}
 714 void action_GetTime() {swf_AddActionTAG(ACTION_GETTIME, 0, 0);}
 715 void action_MBStringExtract() {swf_AddActionTAG(ACTION_MBSTRINGEXTRACT, 0, 0);}
 716 void action_MBCharToAscii() {swf_AddActionTAG(ACTION_MBCHARTOASCII, 0, 0);}
 717 void action_MBAsciiToChar() {swf_AddActionTAG(ACTION_MBASCIITOCHAR, 0, 0);}
 718 void action_Delete() {swf_AddActionTAG(ACTION_DELETE, 0, 0);}
 719 void action_Delete2() {swf_AddActionTAG(ACTION_DELETE2, 0, 0);}
 720 void action_DefineLocal() {swf_AddActionTAG(ACTION_DEFINELOCAL, 0, 0);}
 721 void action_CallFunction() {swf_AddActionTAG(ACTION_CALLFUNCTION, 0, 0);}
 722 void action_Return() {swf_AddActionTAG(ACTION_RETURN, 0, 0);}
 723 void action_Modulo() {swf_AddActionTAG(ACTION_MODULO, 0, 0);}
 724 void action_NewObject() {swf_AddActionTAG(ACTION_NEWOBJECT, 0, 0);}
 725 void action_DefineLocal2() {swf_AddActionTAG(ACTION_DEFINELOCAL2, 0, 0);}
 726 void action_InitArray() {swf_AddActionTAG(ACTION_INITARRAY, 0, 0);}
 727 void action_Makehash() {swf_AddActionTAG(ACTION_MAKEHASH, 0, 0);}
 728 void action_TypeOf() {swf_AddActionTAG(ACTION_TYPEOF, 0, 0);}
 729 void action_TargetPath() {swf_AddActionTAG(ACTION_TARGETPATH, 0, 0);}
 730 void action_Enumerate() {swf_AddActionTAG(ACTION_ENUMERATE, 0, 0);}
 731 void action_Add2() {swf_AddActionTAG(ACTION_ADD2, 0, 0);}
 732 void action_Less2() {swf_AddActionTAG(ACTION_LESS2, 0, 0);}
 733 void action_Equals2() {swf_AddActionTAG(ACTION_EQUALS2, 0, 0);}
 734 void action_ToNumber() {swf_AddActionTAG(ACTION_TONUMBER, 0, 0);}
 735 void action_ToString() {swf_AddActionTAG(ACTION_TOSTRING, 0, 0);}
 736 void action_PushDuplicate() {swf_AddActionTAG(ACTION_PUSHDUPLICATE, 0, 0);}
 737 void action_StackSwap() {swf_AddActionTAG(ACTION_STACKSWAP, 0, 0);}
 738 void action_GetMember() {swf_AddActionTAG(ACTION_GETMEMBER, 0, 0);}
 739 void action_SetMember() {swf_AddActionTAG(ACTION_SETMEMBER, 0, 0);}
 740 void action_Increment() {swf_AddActionTAG(ACTION_INCREMENT, 0, 0);}
 741 void action_Decrement() {swf_AddActionTAG(ACTION_DECREMENT, 0, 0);}
 742 void action_CallMethod() {swf_AddActionTAG(ACTION_CALLMETHOD, 0, 0);}
 743 void action_NewMethod() {swf_AddActionTAG(ACTION_NEWMETHOD, 0, 0);}
 744 void action_BitAnd() {swf_AddActionTAG(ACTION_BITAND, 0, 0);}
 745 void action_BitOr() {swf_AddActionTAG(ACTION_BITOR, 0, 0);}
 746 void action_BitXor() {swf_AddActionTAG(ACTION_BITXOR, 0, 0);}
 747 void action_BitLShift() {swf_AddActionTAG(ACTION_BITLSHIFT, 0, 0);}
 748 void action_BitRShift() {swf_AddActionTAG(ACTION_BITRSHIFT, 0, 0);}
 749 void action_BitURShift() {swf_AddActionTAG(ACTION_BITURSHIFT, 0, 0);}
 750 void action_Call() {swf_AddActionTAG(ACTION_CALL, 0, 0);}
 751 void action_End() {swf_AddActionTAG(ACTION_END, 0, 0);}
 752 void action_GotoFrame(U16 frame)
 753 {
 754     *(U16*)currentatag->tmp = SWAP16(frame);
 755     swf_AddActionTAG(ACTION_GOTOFRAME, (U8*)currentatag->tmp, 2);
 756 }
 757 void action_Jump(U16 branch)
 758 {
 759     *(U16*)currentatag->tmp = SWAP16(branch);
 760     swf_AddActionTAG(ACTION_JUMP, (U8*)currentatag->tmp, 2);
 761 }
 762 void action_If(U16 branch)
 763 {
 764     *(U16*)currentatag->tmp = SWAP16(branch);
 765     swf_AddActionTAG(ACTION_IF, (U8*)currentatag->tmp, 2);
 766 }
 767 void action_StoreRegister(U8 reg)
 768 {
 769     *(U8*)currentatag->tmp = reg;
 770     swf_AddActionTAG(ACTION_STOREREGISTER, (U8*)currentatag->tmp, 1);
 771 }
 772 void action_GotoFrame2(U8 method)
 773 {
 774     *(U8*)currentatag->tmp = method;
 775     swf_AddActionTAG(ACTION_GOTOFRAME2, (U8*)currentatag->tmp, 1);
 776 }
 777 void action_GetUrl2(U8 method)
 778 {
 779     *(U8*)currentatag->tmp = method;
 780     swf_AddActionTAG(ACTION_GETURL2, (U8*)currentatag->tmp, 1);
 781 }
 782 void action_WaitForFrame2(U8 skip)
 783 {
 784     *(U8*)currentatag->tmp = skip;
 785     swf_AddActionTAG(ACTION_WAITFORFRAME2, (U8*)currentatag->tmp, 1);
 786 }
 787 void action_WaitForFrame(U16 frame, U8 skip)
 788 {
 789     *(U16*)currentatag->tmp = SWAP16(frame);
 790     *(U8*)&currentatag->tmp[2] = skip;
 791     swf_AddActionTAG(ACTION_WAITFORFRAME, (U8*)currentatag->tmp, 3);
 792 }
 793 void action_SetTarget(char* target)
 794 {
 795     char*ptr = strdup(target);
 796     swf_AddActionTAG(ACTION_SETTARGET, (U8*)ptr, strlen(ptr)+1);
 797 }
 798 void action_PushNULL()
 799 {
 800     *(U8*)currentatag->tmp = 2; //NULL
 801     swf_AddActionTAG(ACTION_PUSH, (U8*)currentatag->tmp, 1);
 802 }
 803 void action_PushBoolean(char c)
 804 {
 805     *(U8*)currentatag->tmp = 5; //bool
 806     *(U8*)&currentatag->tmp[1] = c;
 807     swf_AddActionTAG(ACTION_PUSH, (U8*)currentatag->tmp, 2);
 808 }
 809 void action_PushRegister(U8 reg)
 810 {
 811     *(U8*)currentatag->tmp = 4; //register
 812     *(U8*)&currentatag->tmp[1] = reg;
 813     swf_AddActionTAG(ACTION_PUSH, (U8*)currentatag->tmp, 2);
 814 }
 815 void action_PushLookup(U8 index)
 816 {
 817     *(U8*)currentatag->tmp = 8; //lookup
 818     *(U8*)&currentatag->tmp[1] = index;
 819     swf_AddActionTAG(ACTION_PUSH, (U8*)currentatag->tmp, 2);
 820 }
 821 void action_PushString(char*str)
 822 {
 823     int l = strlen(str);
 824     char*ptr = (char*)malloc(l+2);
 825     ptr[0] = 0; // string
 826     strcpy(&ptr[1], str);
 827     swf_AddActionTAG(ACTION_PUSH, (U8*)ptr, l+2);
 828 }
 829 void action_PushFloat(float f)
 830 {
 831     char*ptr = (char*)malloc(5);
 832     U32 fd = *(U32*)&f;
 833     ptr[0] = 1; //float
 834     ptr[1]  = fd;
 835     ptr[2]  = fd>>8;
 836     ptr[3]  = fd>>16;
 837     ptr[4]  = fd>>24;
 838     swf_AddActionTAG(ACTION_PUSH, (U8*)ptr, 5);
 839 }
 840 void action_PushDouble(double d)
 841 {
 842     char*ptr = (char*)malloc(9);
 843     U8*dd = (U8*)&d;
 844     ptr[0] = 6; //double
 845 #ifdef WORDS_BIGENDIAN
 846     ptr[1] = dd[7];ptr[2] = dd[6];
 847     ptr[3] = dd[5];ptr[4] = dd[4];
 848     ptr[5] = dd[3];ptr[6] = dd[2];
 849     ptr[7] = dd[1];ptr[8] = dd[0];
 850 #else
 851     ptr[1] = dd[0];ptr[2] = dd[1];
 852     ptr[3] = dd[2];ptr[4] = dd[3];
 853     ptr[5] = dd[4];ptr[6] = dd[5];
 854     ptr[7] = dd[6];ptr[8] = dd[7];
 855 #endif
 856     swf_AddActionTAG(ACTION_PUSH, (U8*)ptr, 9);
 857 }
 858 void action_PushInt(int i)
 859 {
 860     *(U8*)currentatag->tmp = 7; //int
 861     currentatag->tmp[1] = i;
 862     currentatag->tmp[2] = i>>8;
 863     currentatag->tmp[3] = i>>16;
 864     currentatag->tmp[4] = i>>24;
 865     swf_AddActionTAG(ACTION_PUSH, (U8*)currentatag->tmp, 5);
 866 }
 867 void action_GotoLabel(char* label)
 868 {
 869     char*ptr = strdup(label);
 870     swf_AddActionTAG(ACTION_GOTOLABEL, (U8*)ptr, strlen(ptr));
 871 }
 872 void action_GetUrl(char* url, char* label)
 873 {
 874     int l1= strlen(url);
 875     int l2= strlen(label);
 876     char*ptr = malloc(l1+l2+2);
 877     strcpy(ptr, url);
 878     strcpy(&ptr[l1+1], label);
 879     swf_AddActionTAG(ACTION_GETURL, ptr, l1+l2+2);
 880 }
 881 //TODO:
 882 void action_DefineFunction(U8*data, int len) {}
 883 void action_Constantpool(char* constantpool) {}
 884 void action_With(char*object) {}
 885
 886 /*
 887   Properties:
 888
 889   _X 0
 890   _Y 1
 891   _xscale 2
 892   _yscale 3
 893   _currentframe 4
 894   _totalframes 5
 895   _alpha 6
 896   _visible 7
 897   _width 8
 898   _height 9
 899   _rotation 10
 900   _target 11
 901   _framesloaded 12
 902   _name 13
 903   _droptarget 14
 904   _url 15
 905   _highquality 16
 906   _focusrect 17
 907   _soundbuftime 18
 908   _quality* 19
 909   _xmouse* 20
 910   _ymouse* 21
 911 */