lib/as3/abc.c

   1 /* abc.c
   2
   3    Routines for handling Flash2 AVM2 ABC Actionscript
   4
   5    Extension module for the rfxswf library.
   6    Part of the swftools package.
   7
   8    Copyright (c) 2008 Matthias Kramm <kramm@quiss.org>
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 2 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
  23
  24 #include <stdarg.h>
  25 #include <assert.h>
  26 #include "../rfxswf.h"
  27 #include "../q.h"
  28 #include "abc.h"
  29
  30 char stringbuffer[2048];
  31
  32 typedef struct _opcode
  33 {
  34     unsigned char opcode;
  35     char*name;
  36     char*params;
  37 } opcode_t;
  38
  39 /* 2 = multiname
  40    m = method
  41    n = number of params
  42    i = method info
  43    b = byte
  44    s = short
  45    c = class
  46    s = string
  47    S = switch
  48 */
  49
  50 int abc_RegisterNameSpace(abc_file_t*file, const char*name);
  51 int abc_RegisterPackageNameSpace(abc_file_t*file, const char*name);
  52 int abc_RegisterPackageInternalNameSpace(abc_file_t*file, const char*name);
  53 int abc_RegisterProtectedNameSpace(abc_file_t*file, const char*name);
  54 int abc_RegisterExplicitNameSpace(abc_file_t*file, const char*name);
  55 int abc_RegisterStaticProtectedNameSpace(abc_file_t*file, const char*name);
  56 int abc_RegisterPrivateNameSpace(abc_file_t*file, const char*name);
  57
  58
  59 opcode_t opcodes[]={
  60 {0xa0, "add", ""},
  61 {0xc5, "add_i", ""},
  62 {0x86, "atype", "2"},
  63 {0x87, "astypelate", ""},
  64 {0xA8, "bitand", ""},
  65 {0x97, "bitnot", ""},
  66 {0xa9, "bitor", ""},
  67 {0xaa, "bitxor", ""},
  68 {0x41, "call", "n"},
  69 {0x43, "callmethod", "mn"},
  70 {0x4c, "callproplex", "2n"},
  71 {0x46, "callproperty", "2n"},
  72 {0x4f, "callpropvoid", "2n"},
  73 {0x44, "callstatic", "in"},
  74 {0x45, "callsuper", "2n"},
  75 {0x4e, "callsupervoid", "2n"},
  76 {0x78, "checkfilter", ""},
  77 {0x80, "coerce", "2"},
  78 {0x82, "coerce_a", ""},
  79 {0x85, "coerce_s", ""},
  80 {0x42, "construct", "n"},
  81 {0x4a, "constructprop", "2n"},
  82 {0x49, "constructsuper", "n"},
  83 {0x76, "convert_b", ""},
  84 {0x73, "convert_i", ""},
  85 {0x75, "convert_d", ""},
  86 {0x77, "convert_o", ""},
  87 {0x74, "convert_u", ""},
  88 {0x70, "convert_s", ""},
  89 {0xef, "debug", "D"},
  90 {0xf1, "debugfile", "s"},
  91 {0xf0, "debugline", "u"},
  92 {0x94, "declocal", "u"},
  93 {0xc3, "declocal_i", "u"},
  94 {0x93, "decrement", ""},
  95 {0xc1, "decrement_i", ""},
  96 {0x6a, "deleteproperty", "2"},
  97 {0xa3, "divide", ""},
  98 {0x2a, "dup", ""},
  99 {0x06, "dxns", "s"},
 100 {0x07, "dxnslate", ""},
 101 {0xab, "equals", ""},
 102 {0x72, "esc_xattr", ""},
 103 {0x71, "esc_xelem", ""},
 104 {0x5e, "findproperty", "2"},
 105 {0x5d, "findpropstrict", "2"},
 106 {0x59, "getdescendants", "2"},
 107 {0x64, "getglobalscope", ""},
 108 {0x6e, "getglobalslot", "u"},
 109 {0x60, "getlex", "2"},
 110 {0x62, "getlocal", "u"},
 111 {0xd0, "getlocal_0", ""},
 112 {0xd1, "getlocal_1", ""},
 113 {0xd2, "getlocal_2", ""},
 114 {0xd3, "getlocal_3", ""},
 115 {0x66, "getproperty", "2"},
 116 {0x65, "getscopeobject", "u"},
 117 {0x6c, "getslot", "u"},
 118 {0x04, "getsuper", "2"},
 119 {0xaf, "greaterequals", ""},
 120 {0x1f, "hasnext", ""},
 121 {0x32, "hasnext2", "uu"},
 122 {0x13, "ifeq", "j"},
 123 {0x12, "iffalse", "j"},
 124 {0x18, "ifge", "j"},
 125 {0x17, "ifgt", "j"},
 126 {0x16, "ifle", "j"},
 127 {0x15, "iflt", "j"},
 128 {0x0f, "ifnge", "j"},
 129 {0x0e, "ifngt", "j"},
 130 {0x0d, "ifnle", "j"},
 131 {0x0c, "ifnlt", "j"},
 132 {0x14, "ifne", "j"},
 133 {0x19, "ifstricteq", "j"},
 134 {0x1a, "ifstrictne", "j"},
 135 {0x11, "iftrue", "j"},
 136 {0xb4, "in", ""},
 137 {0x92, "inclocal", "u"},
 138 {0xc2, "inclocal_i", "u"},
 139 {0x91, "increment", ""},
 140 {0xc0, "increment_i", ""},
 141 {0x68, "initproperty", "2"},
 142 {0xb1, "instanceof", ""},
 143 {0xb2, "istype", "2"},
 144 {0xb3, "istypelate", ""},
 145 {0x10, "jump", "j"},
 146 {0x08, "kill", "u"},
 147 {0x09, "label", ""},
 148 {0xae, "lessequals", ""},
 149 {0xad, "lessthan", ""},
 150 {0x1b, "lookupswitch", "S"},
 151 {0xa5, "lshift", ""},
 152 {0xa4, "modulo", ""},
 153 {0xa2, "multiply", ""},
 154 {0xc7, "multiply_i", ""},
 155 {0x90, "negate", ""},
 156 {0xc4, "negate_i", ""},
 157 {0x57, "newactivation", ""},
 158 {0x56, "newarray", "u"},
 159 {0x5a, "newcatch", "u"}, //index into exception_info
 160 {0x58, "newclass", "c"}, //index into class_info
 161 {0x40, "newfunction", "u"}, //index into method_info
 162 {0x55, "newobject", "u"},
 163 {0x1e, "nextname", ""},
 164 {0x23, "nextvalue", ""},
 165 {0x02, "nop", ""},
 166 {0x96, "not", ""},
 167 {0x29, "pop", ""},
 168 {0x1d, "popscope", ""},
 169 {0x24, "pushbyte", "b"},
 170 {0x2f, "pushdouble", "u"}, //index into floats
 171 {0x27, "pushfalse", ""},
 172 {0x2d, "pushint", "u"}, //index into ints
 173 {0x31, "pushnamespace", "u"}, //index into namespace
 174 {0x28, "pushnan", ""},
 175 {0x20, "pushnull", ""},
 176 {0x30, "pushscope", ""},
 177 {0x25, "pushshort", "u"},
 178 {0x2c, "pushstring", "s"},
 179 {0x26, "pushtrue", ""},
 180 {0x2e, "pushuint", "u"}, //index into uints
 181 {0x21, "pushundefined", ""},
 182 {0x1c, "pushwith", ""},
 183 {0x48, "returnvalue", ""},
 184 {0x47, "returnvoid", ""},
 185 {0xa6, "rshift", ""},
 186 {0x63, "setlocal", "u"},
 187 {0xd4, "setlocal_0", ""},
 188 {0xd5, "setlocal_1", ""},
 189 {0xd6, "setlocal_2", ""},
 190 {0xd7, "setlocal_3", ""},
 191 {0x6f, "setglobalshot", "u"},
 192 {0x61, "setproperty", "2"},
 193 {0x6d, "setslot", "u"},
 194 {0x05, "setsuper", "2"},
 195 {0xac, "strictequals", ""},
 196 {0xa1, "subtract", ""},
 197 {0xc6, "subtract_i", ""},
 198 {0x2b, "swap", ""},
 199 {0x03, "throw", ""},
 200 {0x95, "typeof", ""},
 201 {0xa7, "urshift", ""},
 202 {0xb0, "xxx", ""},
 203 };
 204
 205 static U8 op2index[256] = {254};
 206
 207 opcode_t* opcode_get(U8 op)
 208 {
 209     int t;
 210     if(op2index[0]==254) {
 211         memset(op2index, 255, sizeof(op2index));
 212         for(t=0;t<sizeof(opcodes)/sizeof(opcodes[0]);t++) {
 213             op2index[opcodes[t].opcode] = t;
 214         }
 215     }
 216     if(op2index[op]!=255)
 217         return &opcodes[op2index[op]];
 218     return 0;
 219 }
 220
 221 abc_code_t*code_parse(TAG*tag, int len, abc_file_t*file, pool_t*pool)
 222 {
 223     abc_code_t*head=0;
 224     abc_code_t*code=0;
 225     int end=tag->pos+len;
 226     //printf("-->\n");fflush(stdout);
 227     while(tag->pos<end) {
 228         U8 opcode = swf_GetU8(tag);
 229         opcode_t*op = opcode_get(opcode);
 230         if(!op) {
 231             fprintf(stderr, "Can't parse opcode %02x\n", opcode);
 232             return head;
 233         }
 234         //printf("%s\n", op->name);fflush(stdout);
 235         NEW(abc_code_t,c);
 236         if(!head) {
 237             head = code = c;
 238         } else {
 239             code->next = c;
 240             code = c;
 241         }
 242
 243         c->opcode = opcode;
 244
 245         char*p = op->params;
 246         int pos = 0;
 247         while(*p) {
 248             void*data = 0;
 249             if(*p == 'n') { // number
 250                 data = (void*)(ptroff_t)swf_GetU30(tag);
 251             } else if(*p == '2') { //multiname
 252                 data = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
 253             } else if(*p == 'm') { //method
 254                 data = array_getvalue(file->methods, swf_GetU30(tag));
 255             } else if(*p == 'c') { //classinfo
 256                 data = array_getvalue(file->classes, swf_GetU30(tag));
 257             } else if(*p == 'i') { //methodbody TODO
 258                 data = array_getvalue(file->method_bodies, swf_GetU30(tag));
 259             } else if(*p == 'u') { // lookoup TODO
 260                 data = (void*)(ptroff_t)swf_GetU30(tag);
 261             } else if(*p == 'b') { // byte
 262                 data = (void*)(ptroff_t)swf_GetU8(tag);
 263             } else if(*p == 'j') { // jump TODO
 264                 data = (void*)(ptroff_t)swf_GetS24(tag);
 265             } else if(*p == 's') { // string
 266                 data = strdup((char*)pool_lookup_string(pool, swf_GetU30(tag)));
 267             } else if(*p == 'D') { // debug
 268                 /*type, usually 1*/
 269                 U8 type = swf_GetU8(tag);
 270                 if(type!=1)
 271                     fprintf(stderr, "Unknown debug type: %02x\n", type);
 272                 /*register name*/
 273                 code->params[0] = strdup((char*)pool_lookup_string(pool, swf_GetU30(tag)));
 274                 /*register index*/
 275                 code->params[1] = (void*)(ptroff_t)swf_GetU8(tag);
 276                 /*unused*/
 277                 swf_GetU30(tag);
 278             } else if(*p == 'S') { // switch statement TODO
 279                 /* I hate these things */
 280                 swf_GetU24(tag); //default
 281                 int num = swf_GetU30(tag)+1;
 282                 int t;
 283                 for(t=0;t<num;t++)
 284                     swf_GetU24(tag);
 285                 data = 0;
 286             } else {
 287                 printf("Can't parse opcode param type \"%c\"\n", *p);
 288                 return 0;
 289             }
 290             if(data)
 291                 code->params[pos++] = data;
 292             p++;
 293         }
 294     }
 295     return head;
 296 }
 297
 298 static void code_free(abc_code_t*c)
 299 {
 300     while(c) {
 301         abc_code_t*next = c->next;
 302         opcode_t*op = opcode_get(c->opcode);
 303         char*p = op?op->params:"";
 304         int pos=0;
 305         while(*p) {
 306             void*data = c->params[pos];
 307             if(*p == '2') { //multiname
 308                 multiname_destroy(data);
 309             } else if(strchr("sD", *p)) {
 310                 free(data);
 311             }
 312             c->params[pos]=0;
 313             p++;pos++;
 314         }
 315         memset(c, 0, sizeof(c));
 316         free(c);
 317         c = next;
 318     }
 319 }
 320
 321 static int code_dump(abc_code_t*c, abc_file_t*file, char*prefix, FILE*fo)
 322 {
 323     pool_t*pool = pool_new();
 324
 325     while(c) {
 326         U8 opcode = c->opcode;
 327         int t;
 328         char found = 0;
 329         opcode_t*op = opcode_get(opcode);
 330         if(!op) {
 331             fprintf(stderr, "Can't parse opcode %02x.\n", opcode);
 332             return 0;
 333         } else {
 334             fprintf(fo, "%s%s ", prefix, op->name);
 335             char*p = op->params;
 336             char first = 1;
 337             int pos=0;
 338             while(*p) {
 339                 void*data = c->params[pos];
 340                 if(pos>0)
 341                     printf(", ");
 342
 343                 if(*p == 'n') {
 344                     int n = (ptroff_t)data;
 345                     fprintf(fo, "%d params", n);
 346                 } else if(*p == '2') {
 347                     multiname_t*n = (multiname_t*)data;
 348                     char* m = multiname_to_string(n);
 349                     fprintf(fo, "%s", m);
 350                     free(m);
 351                 } else if(*p == 'm') {
 352                     abc_method_t*m = (abc_method_t*)data;
 353                     fprintf(fo, "[method %s]", m->name);
 354                 } else if(*p == 'c') {
 355                     abc_class_t*cls = (abc_class_t*)data;
 356                     char*classname = multiname_to_string(cls->classname);
 357                     fprintf(fo, "[classinfo %s]", classname);
 358                     free(classname);
 359                 } else if(*p == 'i') {
 360                     abc_method_body_t*b = (abc_method_body_t*)data;
 361                     fprintf(fo, "[methodbody]");
 362                 } else if(*p == 'u') {
 363                     int n = (ptroff_t)data;
 364                     fprintf(fo, "%d", n);
 365                 } else if(*p == 'b') {
 366                     int b = (ptroff_t)data;
 367                     fprintf(fo, "%02x", b);
 368                 } else if(*p == 'j') {
 369                     int n = (ptroff_t)data;
 370                     fprintf(fo, "%d", n);
 371                 } else if(*p == 's') {
 372                     fprintf(fo, "\"%s\"", data);
 373                 } else if(*p == 'D') {
 374                     fprintf(fo, "[register %02x=%s]", (ptroff_t)c->params[1], (char*)c->params[0]);
 375                 } else if(*p == 'S') {
 376                     fprintf(fo, "[switch data]");
 377                 } else {
 378                     fprintf(stderr, "Can't parse opcode param type \"%c\"\n", *p);
 379                     return 0;
 380                 }
 381                 p++;
 382                 pos++;
 383                 first = 0;
 384             }
 385             fprintf(fo, "\n");
 386         }
 387         c = c->next;
 388     }
 389     return 1;
 390 }
 391
 392 static int opcode_write(TAG*tag, abc_code_t*code, pool_t*pool, abc_file_t*file)
 393 {
 394     opcode_t*c = opcode_get(code->opcode);
 395     char*p = c->params;
 396     int pos = 0;
 397     int len = 0;
 398
 399     if(tag)
 400         swf_SetU8(tag, code->opcode);
 401     len++;
 402
 403     while(*p) {
 404         void*data = code->params[pos++];
 405         assert(pos<=2);
 406         if(*p == 'n') { // number
 407             len += swf_SetU30(tag, (ptroff_t)data);
 408         } else if(*p == '2') { //multiname
 409             multiname_t*m = (multiname_t*)data;
 410             len += swf_SetU30(tag, pool_register_multiname(pool, m));
 411         } else if(*p == 'm') { //method
 412             abc_method_t*m = (abc_method_t*)data;
 413             len += swf_SetU30(tag, m->index);
 414         } else if(*p == 'c') { //classinfo
 415             abc_class_t*cls = (abc_class_t*)data;
 416             len += swf_SetU30(tag, cls->index);
 417         } else if(*p == 'i') { //methodbody
 418             abc_method_body_t*m = (abc_method_body_t*)data;
 419             len += swf_SetU30(tag, m->index);
 420         } else if(*p == 'u') { // integer
 421             len += swf_SetU30(tag, (ptroff_t)data);
 422         } else if(*p == 'b') { // byte
 423             if(tag)
 424                 swf_SetU8(tag, (ptroff_t)data);
 425             len++;
 426         } else if(*p == 'j') { // jump
 427             len += swf_SetS24(tag, (ptroff_t)data);
 428         } else if(*p == 's') { // string
 429             int index = pool_register_string(pool, data);
 430             len += swf_SetU30(tag, index);
 431         } else if(*p == 'D') { // debug statement
 432             if(tag)
 433                 swf_SetU8(tag, 1);
 434             len++;
 435             len+=swf_SetU30(tag, pool_register_string(pool,code->params[0]));
 436             if(tag)
 437                 swf_SetU8(tag, (ptroff_t)code->params[1]);
 438             len++;
 439             len+=swf_SetU30(tag, 0);
 440         } else if(*p == 'S') { // switch statement
 441             len+=swf_SetU24(tag, 0); //default
 442             len+=swf_SetU30(tag, 0); //nr-1
 443             len+=swf_SetU24(tag, 0); //first
 444         } else {
 445             printf("Can't parse opcode param type \"%c\"\n", *p);
 446         }
 447         p++;
 448     }
 449     return len;
 450 }
 451
 452
 453 static char* params_to_string(multiname_list_t*list)
 454 {
 455     multiname_list_t*l;
 456     int n;
 457
 458     l = list;
 459     n = 0;
 460     while(list) {
 461         n++;list=list->next;
 462     }
 463
 464     char**names = (char**)malloc(sizeof(char*)*n);
 465
 466     l = list;
 467     n = 0;
 468     int size = 0;
 469     while(list) {
 470         names[n] = multiname_to_string(list->multiname);
 471         size += strlen(names[n]) + 2;
 472         n++;list=list->next;
 473     }
 474
 475     char* params = malloc(size+5);
 476     params[0]='(';
 477     params[1]=0;
 478     l = list;
 479     int s=0;
 480     n = 0;
 481     while(list) {
 482         if(s)
 483             strcat(params, ", ");
 484         strcat(params, names[n]);
 485         free(names[n]);
 486         n++;
 487         s=1;
 488     }
 489     free(names);
 490     strcat(params, ")");
 491     int t;
 492     return params;
 493 }
 494
 495 //#define DEBUG
 496 #define DEBUG if(0)
 497
 498 static void parse_metadata(TAG*tag, abc_file_t*file, pool_t*pool)
 499 {
 500     int t;
 501     int num_metadata = swf_GetU30(tag);
 502
 503     DEBUG printf("%d metadata\n");
 504     for(t=0;t<num_metadata;t++) {
 505         const char*entry_name = pool_lookup_string(pool, swf_GetU30(tag));
 506         int num = swf_GetU30(tag);
 507         int s;
 508         DEBUG printf("  %s\n", entry_name);
 509         array_t*items = array_new();
 510         for(s=0;s<num;s++) {
 511             int i1 = swf_GetU30(tag);
 512             int i2 = swf_GetU30(tag);
 513             char*key = i1?pool_lookup_string(pool, i1):"";
 514             char*value = i2?pool_lookup_string(pool, i2):"";
 515             DEBUG printf("    %s=%s\n", key, value);
 516             array_append(items, key, strdup(value));
 517         }
 518         array_append(file->metadata, entry_name, items);
 519     }
 520 }
 521
 522 void swf_CopyData(TAG*to, TAG*from, int len)
 523 {
 524     unsigned char*data = malloc(len);
 525     swf_GetBlock(from, data, len);
 526     swf_SetBlock(to, data, len);
 527     free(data);
 528 }
 529
 530 abc_file_t*abc_file_new()
 531 {
 532     abc_file_t*f = malloc(sizeof(abc_file_t));
 533     memset(f, 0, sizeof(abc_file_t));
 534     f->metadata = array_new();
 535
 536     f->methods = array_new();
 537     f->classes = array_new();
 538     f->scripts = array_new();
 539     f->method_bodies = array_new();
 540
 541     return f;
 542 }
 543
 544 #define CLASS_SEALED 1
 545 #define CLASS_FINAL 2
 546 #define CLASS_INTERFACE 4
 547 #define CLASS_PROTECTED_NS 8
 548
 549 abc_class_t* abc_class_new(abc_file_t*pool, multiname_t*classname, multiname_t*superclass) {
 550     abc_class_t* c = malloc(sizeof(abc_class_t));
 551     memset(c, 0, sizeof(abc_class_t));
 552     c->index = array_append(pool->classes, classname->name, c);
 553     c->pool = pool;
 554     c->classname = classname;
 555     c->superclass = superclass;
 556     c->flags = 0;
 557     c->constructor = 0;
 558     c->static_constructor = 0;
 559     c->traits = list_new();
 560     return c;
 561 }
 562 abc_class_t* abc_class_new2(abc_file_t*pool, char*classname, char*superclass)
 563 {
 564     return abc_class_new(pool, multiname_fromstring(classname), multiname_fromstring(superclass));
 565 }
 566
 567 void abc_class_sealed(abc_class_t*c)
 568 {
 569     c->flags |= CLASS_SEALED;
 570 }
 571 void abc_class_final(abc_class_t*c)
 572 {
 573     c->flags |= CLASS_FINAL;
 574 }
 575 void abc_class_interface(abc_class_t*c)
 576 {
 577     c->flags |= CLASS_INTERFACE;
 578 }
 579 void abc_class_protectedNS(abc_class_t*c, char*namespace)
 580 {
 581     c->protectedNS = namespace_new_protected(namespace);
 582     c->flags |= CLASS_PROTECTED_NS;
 583 }
 584 void abc_class_add_interface(abc_class_t*c, multiname_t*interface)
 585 {
 586     list_append(c->interfaces, interface);
 587 }
 588
 589 abc_method_body_t* add_method(abc_file_t*pool, abc_class_t*cls, char*returntype, int num_params, va_list va)
 590 {
 591     /* construct code (method body) object */
 592     abc_method_body_t* c = malloc(sizeof(abc_method_body_t));
 593     memset(c, 0, sizeof(abc_method_body_t));
 594     c->index = array_append(pool->method_bodies, 0, c);
 595     c->pool = pool;
 596     c->traits = list_new();
 597     c->code = 0;
 598
 599     /* construct method object */
 600     NEW(abc_method_t,m);
 601     m->index = array_append(pool->methods, 0, m);
 602     if(returntype && strcmp(returntype, "void")) {
 603         m->return_type = multiname_fromstring(returntype);
 604     } else {
 605         m->return_type = 0;
 606     }
 607     int t;
 608     for(t=0;t<num_params;t++) {
 609         const char*param = va_arg(va, const char*);
 610         list_append(m->parameters, multiname_fromstring(param));
 611     }
 612
 613     /* crosslink the two objects */
 614     m->body = c;
 615     c->method = m;
 616
 617     return c;
 618 }
 619
 620 abc_method_body_t* abc_class_constructor(abc_class_t*cls, char*returntype, int num_params, ...)
 621 {
 622     va_list va;
 623     va_start(va, num_params);
 624     abc_method_body_t* c = add_method(cls->pool, cls, returntype, num_params, va);
 625     va_end(va);
 626     cls->constructor = c->method;
 627     return c;
 628 }
 629
 630 abc_method_body_t* abc_class_staticconstructor(abc_class_t*cls, char*returntype, int num_params, ...)
 631 {
 632     va_list va;
 633     va_start(va, num_params);
 634     abc_method_body_t* c = add_method(cls->pool, cls, returntype, num_params, va);
 635     va_end(va);
 636     cls->static_constructor = c->method;
 637     return c;
 638 }
 639
 640 trait_t*trait_new(int type, multiname_t*name, int data1, int data2, int vindex, int vkind)
 641 {
 642     trait_t*trait = malloc(sizeof(trait_t));
 643     memset(trait, 0, sizeof(trait_t));
 644     trait->kind = type&0x0f;
 645     trait->attributes = type&0xf0;
 646     trait->name = name;
 647     trait->data1 = data1;
 648     trait->data2 = data2;
 649     trait->vindex = vindex;
 650     trait->vkind = vkind;
 651     return trait;
 652 }
 653
 654 abc_method_body_t* abc_class_method(abc_class_t*cls, char*returntype, char*name, int num_params, ...)
 655 {
 656     abc_file_t*pool = cls->pool;
 657     va_list va;
 658     va_start(va, num_params);
 659     abc_method_body_t* c = add_method(cls->pool, cls, returntype, num_params, va);
 660     va_end(va);
 661     list_append(cls->traits, trait_new(TRAIT_METHOD, multiname_fromstring(name), 0, c->method->index, 0, 0));
 662     return c;
 663 }
 664
 665 void abc_AddSlot(abc_class_t*cls, char*name, int slot, char*multiname)
 666 {
 667     abc_file_t*pool = cls->pool;
 668     multiname_t*m = multiname_fromstring(multiname);
 669     list_append(cls->traits, trait_new(TRAIT_SLOT, m, slot, 0, 0, 0));
 670 }
 671
 672 void abc_method_body_addClassTrait(abc_method_body_t*code, char*multiname, int slotid, abc_class_t*cls)
 673 {
 674     abc_file_t*pool = code->pool;
 675     multiname_t*m = multiname_fromstring(multiname);
 676     trait_t*trait = trait_new(TRAIT_CLASS, m, slotid, 0, 0, 0);
 677     trait->cls = cls;
 678     list_append(code->traits, trait);
 679 }
 680
 681 /* notice: traits of a method (body) belonging to an init script
 682    and traits of the init script are *not* the same thing */
 683 void abc_initscript_addClassTrait(abc_script_t*script, char*multiname, int slotid, abc_class_t*cls)
 684 {
 685     abc_file_t*pool = script->pool;
 686     multiname_t*m = multiname_fromstring(multiname);
 687     trait_t*trait = trait_new(TRAIT_CLASS, m, slotid, 0, 0, 0);
 688     trait->cls = cls;
 689     list_append(script->traits, trait);
 690 }
 691
 692 abc_script_t* abc_initscript(abc_file_t*pool, char*returntype, int num_params, ...)
 693 {
 694     va_list va;
 695     va_start(va, num_params);
 696     abc_method_body_t* c = add_method(pool, 0, returntype, num_params, va);
 697     abc_script_t* s = malloc(sizeof(abc_script_t));
 698     s->method = c->method;
 699     s->traits = list_new();
 700     s->pool = pool;
 701     array_append(pool->scripts, 0, s);
 702     va_end(va);
 703     return s;
 704 }
 705
 706 static void dump_traits(FILE*fo, const char*prefix, trait_list_t*traits, abc_file_t*file);
 707
 708 static void dump_method(FILE*fo, const char*prefix, const char*type, const char*name, abc_method_t*m, abc_file_t*file)
 709 {
 710     const char*return_type = "";
 711     if(m->return_type)
 712         return_type = multiname_to_string(m->return_type);
 713
 714     char*paramstr = params_to_string(m->parameters);
 715
 716     fprintf(fo, "%s%s %s %s=%s %s\n", prefix, type, return_type, name, m->name, paramstr);
 717
 718     abc_method_body_t*c = m->body;
 719     if(!c) {
 720         return;
 721     }
 722
 723     fprintf(fo, "%s[%d %d %d %d %d]\n", prefix, c->max_stack, c->local_count, c->init_scope_depth, c->max_scope_depth, c->exception_count);
 724
 725     char prefix2[80];
 726     sprintf(prefix2, "%s    ", prefix);
 727     if(c->traits)
 728         dump_traits(fo, prefix, c->traits, file);
 729     fprintf(fo, "%s{\n", prefix);
 730     code_dump(c->code, file, prefix2, fo);
 731     fprintf(fo, "%s}\n\n", prefix);
 732 }
 733
 734 static void traits_free(trait_list_t*traits)
 735 {
 736     trait_list_t*t = traits;
 737     while(t) {
 738         if(t->trait->name) {
 739             multiname_destroy(t->trait->name);t->trait->name = 0;
 740         }
 741         if(t->trait->kind == TRAIT_SLOT || t->trait->kind == TRAIT_CONST) {
 742             multiname_destroy(t->trait->type_name);
 743         }
 744         free(t->trait);t->trait = 0;
 745         t = t->next;
 746     }
 747     list_free(traits);
 748 }
 749
 750 static trait_list_t* traits_parse(TAG*tag, pool_t*pool, abc_file_t*file)
 751 {
 752     int num_traits = swf_GetU30(tag);
 753     trait_list_t*traits = list_new();
 754     int t;
 755     if(num_traits) {
 756         DEBUG printf("%d traits\n", num_traits);
 757     }
 758
 759     for(t=0;t<num_traits;t++) {
 760         trait_t*trait = malloc(sizeof(trait_t));
 761         memset(trait, 0, sizeof(trait_t));
 762         list_append(traits, trait);
 763
 764         trait->name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag))); // always a QName (ns,name)
 765
 766         const char*name = 0;
 767         DEBUG name = multiname_to_string(trait->name);
 768         U8 kind = swf_GetU8(tag);
 769         U8 attributes = kind&0xf0;
 770         kind&=0x0f;
 771         trait->kind = kind;
 772         trait->attributes = attributes;
 773         DEBUG printf("  trait %d) %s type=%02x\n", t, name, kind);
 774         if(kind == TRAIT_METHOD || kind == TRAIT_GETTER || kind == TRAIT_SETTER) { // method / getter / setter
 775             trait->disp_id = swf_GetU30(tag);
 776             trait->method = (abc_method_t*)array_getvalue(file->methods, swf_GetU30(tag));
 777             DEBUG printf("  method/getter/setter\n");
 778         } else if(kind == TRAIT_FUNCTION) { // function
 779             trait->slot_id =  swf_GetU30(tag);
 780             trait->method = (abc_method_t*)array_getvalue(file->methods, swf_GetU30(tag));
 781         } else if(kind == TRAIT_CLASS) { // class
 782             trait->slot_id = swf_GetU30(tag);
 783             trait->cls = (abc_class_t*)array_getvalue(file->classes, swf_GetU30(tag));
 784             DEBUG printf("  class %s %d %d\n", name, trait->slot_id, trait->cls);
 785         } else if(kind == TRAIT_SLOT || kind == TRAIT_CONST) { // slot, const
 786             /* a slot is a variable in a class that is shared amonst all instances
 787                of the same type, but which has a unique location in each object
 788                (in other words, slots are non-static, traits are static)
 789              */
 790             trait->slot_id = swf_GetU30(tag);
 791             trait->type_name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
 792             trait->vindex = swf_GetU30(tag);
 793             if(trait->vindex) {
 794                 trait->vkind = swf_GetU8(tag);
 795             }
 796             DEBUG printf("  slot %s %d %s (vindex=%d)\n", name, trait->slot_id, trait->type_name->name, trait->vindex);
 797         } else {
 798             fprintf(stderr, "Can't parse trait type %d\n", kind);
 799         }
 800         if(attributes&0x40) {
 801             int num = swf_GetU30(tag);
 802             int s;
 803             for(s=0;s<num;s++) {
 804                 swf_GetU30(tag); //index into metadata array
 805             }
 806         }
 807     }
 808     return traits;
 809 }
 810
 811 void traits_skip(TAG*tag)
 812 {
 813     int num_traits = swf_GetU30(tag);
 814     int t;
 815     for(t=0;t<num_traits;t++) {
 816         swf_GetU30(tag);
 817         U8 kind = swf_GetU8(tag);
 818         U8 attributes = kind&0xf0;
 819         kind&=0x0f;
 820         swf_GetU30(tag);
 821         swf_GetU30(tag);
 822         if(kind == TRAIT_SLOT || kind == TRAIT_CONST) {
 823             if(swf_GetU30(tag)) swf_GetU8(tag);
 824         } else if(kind>TRAIT_CONST) {
 825             fprintf(stderr, "Can't parse trait type %d\n", kind);
 826         }
 827         if(attributes&0x40) {
 828             int s, num = swf_GetU30(tag);
 829             for(s=0;s<num;s++) swf_GetU30(tag);
 830         }
 831     }
 832 }
 833
 834
 835 static void traits_write(pool_t*pool, TAG*tag, trait_list_t*traits)
 836 {
 837     if(!traits) {
 838         swf_SetU30(tag, 0);
 839         return;
 840     }
 841     swf_SetU30(tag, list_length(traits));
 842     int s;
 843
 844     while(traits) {
 845         trait_t*trait = traits->trait;
 846
 847         swf_SetU30(tag, pool_register_multiname(pool, trait->name));
 848         swf_SetU8(tag, trait->kind|trait->attributes);
 849
 850         swf_SetU30(tag, trait->data1);
 851
 852         if(trait->kind == TRAIT_CLASS) {
 853             swf_SetU30(tag, trait->cls->index);
 854         } else if(trait->kind == TRAIT_GETTER ||
 855                   trait->kind == TRAIT_SETTER ||
 856                   trait->kind == TRAIT_METHOD) {
 857             swf_SetU30(tag, trait->method->index);
 858         } else if(trait->kind == TRAIT_SLOT ||
 859                   trait->kind == TRAIT_CONST) {
 860             int index = pool_register_multiname(pool, trait->type_name);
 861             swf_SetU30(tag, index);
 862         } else  {
 863             swf_SetU30(tag, trait->data2);
 864         }
 865
 866         if(trait->kind == TRAIT_SLOT || trait->kind == TRAIT_CONST) {
 867             swf_SetU30(tag, trait->vindex);
 868             if(trait->vindex) {
 869                 swf_SetU8(tag, trait->vkind);
 870             }
 871         }
 872         if(trait->attributes&0x40) {
 873             // metadata
 874             swf_SetU30(tag, 0);
 875         }
 876         traits = traits->next;
 877     }
 878 }
 879
 880
 881 static void dump_traits(FILE*fo, const char*prefix, trait_list_t*traits, abc_file_t*file)
 882 {
 883     int t;
 884     while(traits) {
 885         trait_t*trait = traits->trait;
 886         char*name = multiname_to_string(trait->name);
 887         U8 kind = trait->kind;
 888         U8 attributes = trait->attributes;
 889         if(kind == TRAIT_METHOD) {
 890             abc_method_t*m = trait->method;
 891             dump_method(fo, prefix, "method", name, m, file);
 892         } else if(kind == TRAIT_GETTER) {
 893             abc_method_t*m = trait->method;
 894             dump_method(fo, prefix, "getter", name, m, file);
 895         } else if(kind == TRAIT_SETTER) {
 896             abc_method_t*m = trait->method;
 897             dump_method(fo, prefix, "setter", name, m, file);
 898         } else if(kind == TRAIT_FUNCTION) { // function
 899             abc_method_t*m = trait->method;
 900             dump_method(fo, prefix, "function", name, m, file);
 901         } else if(kind == TRAIT_CLASS) { // class
 902             abc_class_t*cls = trait->cls;
 903             if(!cls) {
 904                 fprintf(fo, "%sslot %d: class %s=class%d\n", prefix, trait->slot_id, name);
 905             } else {
 906                 fprintf(fo, "%sslot %d: class %s=%s\n", prefix, trait->slot_id, name, cls->classname->name);
 907             }
 908         } else if(kind == TRAIT_SLOT || kind == TRAIT_CONST) { // slot, const
 909             int slot_id = trait->slot_id;
 910             char*type_name = multiname_to_string(trait->type_name);
 911             fprintf(fo, "%sslot %s %d %s (vindex=%d)\n", prefix, name, trait->slot_id, type_name, trait->vindex);
 912             free(type_name);
 913         } else {
 914             fprintf(fo, "%s    can't dump trait type %d\n", prefix, kind);
 915         }
 916         free(name);
 917         traits=traits->next;
 918     }
 919 }
 920
 921 void* swf_DumpABC(FILE*fo, void*code, char*prefix)
 922 {
 923     abc_file_t* file = (abc_file_t*)code;
 924
 925     if(file->name) {
 926         fprintf(fo, "%s#\n", prefix);
 927         fprintf(fo, "%s#name: %s\n", prefix, file->name);
 928         fprintf(fo, "%s#\n", prefix);
 929     }
 930
 931     int t;
 932     for(t=0;t<file->metadata->num;t++) {
 933         const char*entry_name = array_getkey(file->metadata, t);
 934         fprintf(fo, "%s#Metadata \"%s\":\n", prefix, entry_name);
 935         int s;
 936         array_t*items = (array_t*)array_getvalue(file->metadata, t);
 937         for(s=0;s<items->num;s++) {
 938             fprintf(fo, "%s#  %s=%s\n", prefix, array_getkey(items, s), array_getvalue(items,s));
 939         }
 940         fprintf(fo, "%s#\n", prefix);
 941     }
 942
 943     for(t=0;t<file->classes->num;t++) {
 944         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 945         char prefix2[80];
 946         sprintf(prefix2, "%s    ", prefix);
 947
 948         fprintf(fo, "%s", prefix);
 949         if(cls->flags&1) fprintf(fo, "sealed ");
 950         if(cls->flags&2) fprintf(fo, "final ");
 951         if(cls->flags&4) fprintf(fo, "interface ");
 952         if(cls->flags&8) {
 953             char*s = namespace_to_string(cls->protectedNS);
 954             fprintf(fo, "protectedNS(%s) ", s);
 955             free(s);
 956         }
 957
 958         char*classname = multiname_to_string(cls->classname);
 959         fprintf(fo, "class %s", classname);
 960         free(classname);
 961         if(cls->superclass) {
 962             char*supername = multiname_to_string(cls->superclass);
 963             fprintf(fo, " extends %s", supername);
 964             free(supername);
 965             multiname_list_t*ilist = cls->interfaces;
 966             if(ilist)
 967                 fprintf(fo, " implements");
 968             while(ilist) {
 969                 char*s = multiname_to_string(ilist->multiname);
 970                 fprintf(fo, " %s", s);
 971                 free(s);
 972                 ilist = ilist->next;
 973             }
 974             ilist->next;
 975         }
 976         if(cls->flags&0xf0)
 977             fprintf(fo, "extra flags=%02x\n", cls->flags&0xf0);
 978         fprintf(fo, "%s{\n", prefix);
 979
 980         if(cls->static_constructor)
 981             dump_method(fo, prefix2,"staticconstructor", "", cls->static_constructor, file);
 982         dump_traits(fo, prefix2, cls->static_constructor_traits, file);
 983
 984         char*n = multiname_to_string(cls->classname);
 985         if(cls->constructor)
 986             dump_method(fo, prefix2, "constructor", n, cls->constructor, file);
 987         free(n);
 988         dump_traits(fo, prefix2,cls->traits, file);
 989         fprintf(fo, "%s}\n", prefix);
 990     }
 991     fprintf(fo, "%s\n", prefix);
 992
 993     for(t=0;t<file->scripts->num;t++) {
 994         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
 995         dump_method(fo, prefix,"initmethod", "init", s->method, file);
 996         dump_traits(fo, prefix, s->traits, file);
 997     }
 998     return file;
 999 }
1000
1001 void* swf_ReadABC(TAG*tag)
1002 {
1003     abc_file_t* file = abc_file_new();
1004     pool_t*pool = pool_new();
1005
1006     swf_SetTagPos(tag, 0);
1007     int t;
1008     if(tag->id == ST_DOABC) {
1009         U32 abcflags = swf_GetU32(tag);
1010         DEBUG printf("flags=%08x\n", abcflags);
1011         char*name= swf_GetString(tag);
1012         file->name = name?strdup(name):0;
1013     }
1014     U32 version = swf_GetU32(tag);
1015     if(version!=0x002e0010) {
1016         fprintf(stderr, "Warning: unknown AVM2 version %08x\n", version);
1017     }
1018
1019     pool_read(pool, tag);
1020
1021     int num_methods = swf_GetU30(tag);
1022     DEBUG printf("%d methods\n", num_methods);
1023     for(t=0;t<num_methods;t++) {
1024         NEW(abc_method_t,m);
1025         int param_count = swf_GetU30(tag);
1026         int return_type_index = swf_GetU30(tag);
1027         m->return_type = multiname_clone(pool_lookup_multiname(pool, return_type_index));
1028
1029         int s;
1030         for(s=0;s<param_count;s++) {
1031             int type_index = swf_GetU30(tag);
1032             multiname_t*param = multiname_clone(pool_lookup_multiname(pool, type_index));
1033             /* type_index might be 0, which probably means "..." (varargs) */
1034             list_append(m->parameters, param);
1035         }
1036
1037         int namenr = swf_GetU30(tag);
1038         if(namenr)
1039             m->name = strdup(pool_lookup_string(pool, namenr));
1040         else
1041             m->name = strdup("");
1042
1043         m->flags = swf_GetU8(tag);
1044
1045         DEBUG printf("method %d) %s flags=%02x\n", t, params_to_string(m->parameters), m->flags);
1046
1047         if(m->flags&0x08) {
1048             /* optional parameters */
1049             int num = swf_GetU30(tag);
1050             int s;
1051             for(s=0;s<num;s++) {
1052                 int val = swf_GetU30(tag);
1053                 U8 kind = swf_GetU8(tag); // specifies index type for "val"
1054             }
1055         }
1056         if(m->flags&0x80) {
1057             /* debug information- not used by avm2 */
1058             multiname_list_t*l = m->parameters;
1059             while(l) {
1060                 char*name = pool_lookup_string(pool, swf_GetU30(tag));
1061                 l = l->next;
1062             }
1063         }
1064         array_append(file->methods, m->name, m);
1065     }
1066
1067     parse_metadata(tag, file, pool);
1068
1069     /* skip classes, and scripts for now, and do the real parsing later */
1070     int num_classes = swf_GetU30(tag);
1071     int classes_pos = tag->pos;
1072     DEBUG printf("%d classes\n", num_classes);
1073     for(t=0;t<num_classes;t++) {
1074         abc_class_t*cls = malloc(sizeof(abc_class_t));
1075         memset(cls, 0, sizeof(abc_class_t));
1076
1077         DEBUG printf("class %d\n", t);
1078         int name_index = swf_GetU30(tag); //classname
1079         char*name = pool_lookup_string(pool, name_index);
1080
1081         array_append(file->classes, name, cls);
1082
1083         swf_GetU30(tag); //supername
1084         cls->flags = swf_GetU8(tag);
1085         if(cls->flags&8)
1086             swf_GetU30(tag); //protectedNS
1087         int s;
1088         int inum = swf_GetU30(tag); //interface count
1089         cls->interfaces = 0;
1090         for(s=0;s<inum;s++) {
1091             int interface_index = swf_GetU30(tag);
1092             multiname_t* m = multiname_clone(pool_lookup_multiname(pool, interface_index));
1093             list_append(cls->interfaces, m);
1094             DEBUG printf("  class %d interface: %s\n", t, m->name);
1095         }
1096
1097         swf_GetU30(tag); //iinit
1098         traits_skip(tag);
1099     }
1100     for(t=0;t<num_classes;t++) {
1101         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
1102         int cinit = swf_GetU30(tag);
1103         cls->static_constructor = (abc_method_t*)array_getvalue(file->methods, cinit);
1104         traits_skip(tag);
1105     }
1106     int num_scripts = swf_GetU30(tag);
1107     DEBUG printf("%d scripts\n", num_scripts);
1108     for(t=0;t<num_scripts;t++) {
1109         int init = swf_GetU30(tag);
1110         traits_skip(tag);
1111     }
1112
1113     int num_method_bodies = swf_GetU30(tag);
1114     DEBUG printf("%d method bodies\n", num_method_bodies);
1115     for(t=0;t<num_method_bodies;t++) {
1116         int methodnr = swf_GetU30(tag);
1117         if(methodnr >= file->methods->num) {
1118             printf("Invalid method number: %d\n", methodnr);
1119             return 0;
1120         }
1121         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, methodnr);
1122         abc_method_body_t*c = malloc(sizeof(abc_method_body_t));
1123         memset(c, 0, sizeof(abc_method_body_t));
1124         c->max_stack = swf_GetU30(tag);
1125         c->local_count = swf_GetU30(tag);
1126         c->init_scope_depth = swf_GetU30(tag);
1127         c->max_scope_depth = swf_GetU30(tag);
1128         int code_length = swf_GetU30(tag);
1129
1130         c->method = m;
1131         m->body = c;
1132
1133         int pos = tag->pos + code_length;
1134         c->code = code_parse(tag, code_length, file, pool);
1135         tag->pos = pos;
1136
1137         int exception_count = swf_GetU30(tag);
1138         int s;
1139         for(s=0;s<exception_count;s++) {
1140             swf_GetU30(tag); //from
1141             swf_GetU30(tag); //to
1142             swf_GetU30(tag); //target
1143             swf_GetU30(tag); //exc_type
1144             swf_GetU30(tag); //var_name
1145         }
1146         c->traits = traits_parse(tag, pool, file);
1147
1148         DEBUG printf("method_body %d) (method %d), %d bytes of code", t, methodnr, code_length);
1149
1150         array_append(file->method_bodies, m->name, c);
1151     }
1152     if(tag->len - tag->pos) {
1153         fprintf(stderr, "%d unparsed bytes remaining in ABC block\n", tag->len - tag->pos);
1154         return 0;
1155     }
1156
1157     swf_SetTagPos(tag, classes_pos);
1158     for(t=0;t<num_classes;t++) {
1159         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
1160
1161         int classname_index = swf_GetU30(tag);
1162         int superclass_index = swf_GetU30(tag);
1163         cls->classname = multiname_clone(pool_lookup_multiname(pool, classname_index));
1164         cls->superclass = multiname_clone(pool_lookup_multiname(pool, superclass_index));
1165         cls->flags = swf_GetU8(tag);
1166         const char*ns = "";
1167         if(cls->flags&8) {
1168             int ns_index = swf_GetU30(tag);
1169             cls->protectedNS = namespace_clone(pool_lookup_namespace(pool, ns_index));
1170         }
1171
1172         int num_interfaces = swf_GetU30(tag); //interface count
1173         int s;
1174         for(s=0;s<num_interfaces;s++) {
1175             swf_GetU30(tag); // multiname index TODO
1176         }
1177         int iinit = swf_GetU30(tag);
1178         cls->constructor = (abc_method_t*)array_getvalue(file->methods, iinit);
1179         cls->traits = traits_parse(tag, pool, file);
1180     }
1181     for(t=0;t<num_classes;t++) {
1182         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
1183         /* SKIP */
1184         swf_GetU30(tag); // cindex
1185         cls->static_constructor_traits = traits_parse(tag, pool, file);
1186     }
1187     int num_scripts2 = swf_GetU30(tag);
1188     for(t=0;t<num_scripts2;t++) {
1189         int init = swf_GetU30(tag);
1190         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, init);
1191
1192         abc_script_t*s = malloc(sizeof(abc_script_t));
1193         memset(s, 0, sizeof(abc_script_t));
1194         s->method = m;
1195         s->traits = traits_parse(tag, pool, file);
1196         array_append(file->scripts, "script", s);
1197         if(!s->traits) {
1198             fprintf(stderr, "Can't parse script traits\n");
1199             return 0;
1200         }
1201     }
1202
1203     pool_destroy(pool);
1204     return file;
1205 }
1206
1207 static void code_write(TAG*tag, abc_code_t*code, pool_t*pool, abc_file_t*file)
1208 {
1209     int len = 0;
1210     abc_code_t*c = code;
1211     while(c) {
1212         len += opcode_write(0, c, pool, file);
1213         c = c->next;
1214     }
1215     swf_SetU30(tag, len);
1216     int pos = tag->len;
1217     c = code;
1218     while(c) {
1219         opcode_write(tag, c, pool, file);
1220         c = c->next;
1221     }
1222     assert(tag->len - pos == len);
1223 }
1224
1225 void swf_WriteABC(TAG*abctag, void*code)
1226 {
1227     abc_file_t*file = (abc_file_t*)code;
1228     pool_t*pool = pool_new();
1229
1230     TAG*tmp = swf_InsertTag(0,0);
1231     TAG*tag = tmp;
1232     int t;
1233
1234     swf_SetU30(tag, file->methods->num);
1235
1236     /* enumerate classes, methods and method bodies */
1237     for(t=0;t<file->methods->num;t++) {
1238         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
1239         m->index = t;
1240     }
1241     for(t=0;t<file->classes->num;t++) {
1242         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1243         c->index = t;
1244     }
1245     for(t=0;t<file->method_bodies->num;t++) {
1246         abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1247         m->index = t;
1248     }
1249
1250     for(t=0;t<file->methods->num;t++) {
1251         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
1252         int n = 0;
1253         multiname_list_t*l = m->parameters;
1254         int num_params = list_length(m->parameters);
1255         swf_SetU30(tag, num_params);
1256         if(m->return_type)
1257             swf_SetU30(tag, pool_register_multiname(pool, m->return_type));
1258         else
1259             swf_SetU30(tag, 0);
1260         int s;
1261         while(l) {
1262             swf_SetU30(tag, pool_register_multiname(pool, l->multiname));
1263             l = l->next;
1264         }
1265         if(m->name) {
1266             swf_SetU30(tag, pool_register_string(pool, m->name));
1267         } else {
1268             swf_SetU30(tag, 0);
1269         }
1270
1271         swf_SetU8(tag, 0); //flags
1272     }
1273
1274     /* write metadata */
1275     swf_SetU30(tag, file->metadata->num);
1276     for(t=0;t<file->metadata->num;t++) {
1277         const char*entry_name = array_getkey(file->metadata, t);
1278         swf_SetU30(tag, pool_register_string(pool, entry_name));
1279         array_t*items = (array_t*)array_getvalue(file->metadata, t);
1280         swf_SetU30(tag, items->num);
1281         int s;
1282         for(s=0;s<items->num;s++) {
1283             int i1 = pool_register_string(pool, array_getkey(items, s));
1284             int i2 = pool_register_string(pool, array_getvalue(items, s));
1285             swf_SetU30(tag, i1);
1286             swf_SetU30(tag, i2);
1287         }
1288     }
1289
1290     swf_SetU30(tag, file->classes->num);
1291     for(t=0;t<file->classes->num;t++) {
1292         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1293
1294         int classname_index = pool_register_multiname(pool, c->classname);
1295         int superclass_index = pool_register_multiname(pool, c->superclass);
1296
1297         swf_SetU30(tag, classname_index);
1298         swf_SetU30(tag, superclass_index);
1299
1300         swf_SetU8(tag, c->flags); // flags
1301         if(c->flags&0x08) {
1302             int ns_index = pool_register_namespace(pool, c->protectedNS);
1303             swf_SetU30(tag, ns_index);
1304         }
1305
1306         swf_SetU30(tag, list_length(c->interfaces));
1307         multiname_list_t*interface= c->interfaces;
1308         while(interface) {
1309             swf_SetU30(tag, pool_register_multiname(pool, interface->multiname));
1310             interface = interface->next;
1311         }
1312
1313         if(!c->constructor) {
1314             fprintf(stderr, "Error: Class %s has no constructor\n", c->classname);
1315             return;
1316         }
1317         swf_SetU30(tag, c->constructor->index);
1318         traits_write(pool, tag, c->traits);
1319     }
1320     for(t=0;t<file->classes->num;t++) {
1321         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1322         if(!c->static_constructor) {
1323             fprintf(stderr, "Error: Class %s has no static constructor\n", c->classname);
1324             return;
1325         }
1326         swf_SetU30(tag, c->static_constructor->index);
1327         traits_write(pool, tag, c->static_constructor_traits);
1328     }
1329
1330     swf_SetU30(tag, file->scripts->num);
1331     for(t=0;t<file->scripts->num;t++) {
1332         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
1333         swf_SetU30(tag, s->method->index); //!=t!
1334         traits_write(pool, tag, s->traits);
1335     }
1336
1337     swf_SetU30(tag, file->method_bodies->num);
1338     for(t=0;t<file->method_bodies->num;t++) {
1339         abc_method_body_t*c = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1340         abc_method_t*m = c->method;
1341         swf_SetU30(tag, m->index);
1342         swf_SetU30(tag, c->max_stack);
1343         swf_SetU30(tag, c->local_count);
1344         swf_SetU30(tag, c->init_scope_depth);
1345         swf_SetU30(tag, c->max_scope_depth);
1346
1347         code_write(tag, c->code, pool, file);
1348
1349         swf_SetU30(tag, c->exception_count);
1350         traits_write(pool, tag, c->traits);
1351     }
1352
1353     // --- start to write real tag --
1354
1355     tag = abctag;
1356
1357     if(tag->id == ST_DOABC) {
1358         swf_SetU32(tag, 1); // flags
1359         swf_SetString(tag, file->name);
1360     }
1361
1362     swf_SetU16(tag, 0x10); //version
1363     swf_SetU16(tag, 0x2e);
1364
1365     pool_write(pool, tag);
1366
1367     swf_SetBlock(tag, tmp->data, tmp->len);
1368
1369     swf_DeleteTag(0, tmp);
1370     pool_destroy(pool);
1371 }
1372
1373 void swf_FreeABC(void*code)
1374 {
1375     abc_file_t*file= (abc_file_t*)code;
1376
1377     int t;
1378     for(t=0;t<file->metadata->num;t++) {
1379         array_t*items = (array_t*)array_getvalue(file->metadata, t);
1380         int s;
1381         for(s=0;s<items->num;s++) {
1382             free(array_getvalue(items, s));
1383         }
1384         array_free(items);
1385     }
1386     array_free(file->metadata);
1387
1388     for(t=0;t<file->methods->num;t++) {
1389         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
1390
1391         multiname_list_t*param = m->parameters;
1392         while(param) {
1393             multiname_destroy(param->multiname);param->multiname=0;
1394             param = param->next;
1395         }
1396         list_free(m->parameters);m->parameters=0;
1397
1398         if(m->name) {
1399             free((void*)m->name);m->name=0;
1400         }
1401         if(m->return_type) {
1402             multiname_destroy(m->return_type);
1403         }
1404         free(m);
1405     }
1406     array_free(file->methods);
1407
1408     for(t=0;t<file->classes->num;t++) {
1409         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
1410         traits_free(cls->traits);cls->traits=0;
1411         traits_free(cls->static_constructor_traits);cls->static_constructor_traits=0;
1412
1413         if(cls->classname) {
1414             multiname_destroy(cls->classname);
1415         }
1416         if(cls->superclass) {
1417             multiname_destroy(cls->superclass);
1418         }
1419
1420         multiname_list_t*i = cls->interfaces;
1421         while(i) {
1422             multiname_destroy(i->multiname);i->multiname=0;
1423             i = i->next;
1424         }
1425         list_free(cls->interfaces);cls->interfaces=0;
1426
1427         if(cls->protectedNS) {
1428             namespace_destroy(cls->protectedNS);
1429         }
1430         free(cls);
1431     }
1432     array_free(file->classes);
1433
1434     for(t=0;t<file->scripts->num;t++) {
1435         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
1436         traits_free(s->traits);s->traits=0;
1437         free(s);
1438     }
1439     array_free(file->scripts);
1440
1441     for(t=0;t<file->method_bodies->num;t++) {
1442         abc_method_body_t*body = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1443         code_free(body->code);body->code=0;
1444         traits_free(body->traits);body->traits=0;
1445         free(body);
1446     }
1447     array_free(file->method_bodies);
1448
1449     if(file->name) {
1450         free((void*)file->name);file->name=0;
1451     }
1452
1453     free(file);
1454 }
1455
1456 abc_code_t* add_opcode(abc_code_t*atag, U8 op)
1457 {
1458     abc_code_t*tmp = (abc_code_t*)malloc(sizeof(abc_code_t));
1459     tmp->opcode = op;
1460     tmp->next = 0;
1461     if(atag) {
1462         tmp->prev = atag;
1463         atag->next = tmp;
1464         tmp->parent = atag->parent;
1465     } else {
1466         tmp->prev = 0;
1467         tmp->parent = tmp;
1468     }
1469     return tmp;
1470 }
1471
1472 #include "abc_ops.c"
1473
1474 void swf_AddButtonLinks(SWF*swf, char stop_each_frame, char events)
1475 {
1476     int num_frames = 0;
1477     int has_buttons = 0;
1478     TAG*tag=swf->firstTag;
1479     while(tag) {
1480         if(tag->id == ST_SHOWFRAME)
1481             num_frames++;
1482         if(tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2)
1483             has_buttons = 1;
1484         tag = tag->next;
1485     }
1486
1487     abc_file_t*file = abc_file_new();
1488     abc_method_body_t*c = 0;
1489
1490     abc_class_t*cls = abc_class_new2(file, "rfx::MainTimeline", "flash.display::MovieClip");
1491     abc_class_protectedNS(cls, "rfx:MainTimeline");
1492
1493     TAG*abctag = swf_InsertTagBefore(swf, swf->firstTag, ST_DOABC);
1494
1495     tag = swf_InsertTag(abctag, ST_SYMBOLCLASS);
1496     swf_SetU16(tag, 1);
1497     swf_SetU16(tag, 0);
1498     swf_SetString(tag, "rfx.MainTimeline");
1499
1500     c = abc_class_staticconstructor(cls, 0, 0);
1501     c->max_stack = 1;
1502     c->local_count = 1;
1503     c->init_scope_depth = 9;
1504     c->max_scope_depth = 10;
1505
1506     __ getlocal_0(c);
1507     __ pushscope(c);
1508     __ returnvoid(c);
1509
1510     c = abc_class_constructor(cls, 0, 0);
1511     c->max_stack = 3;
1512     c->local_count = 1;
1513     c->init_scope_depth = 10;
1514     c->max_scope_depth = 11;
1515
1516     debugfile(c, "constructor.as");
1517
1518     __ getlocal_0(c);
1519     __ pushscope(c);
1520
1521     __ getlocal_0(c);
1522     __ constructsuper(c,0);
1523
1524     __ getlex(c, "[package]flash.system::Security");
1525     __ pushstring(c, "*");
1526     __ callpropvoid(c, "[package]::allowDomain", 1);
1527
1528     if(stop_each_frame || has_buttons) {
1529         int frame = 0;
1530         tag = swf->firstTag;
1531         abc_method_body_t*f = 0; //frame script
1532         while(tag && tag->id!=ST_END) {
1533             char framename[80];
1534             char needs_framescript=0;
1535             char buttonname[80];
1536             char functionname[80];
1537             sprintf(framename, "[packageinternal]rfx::frame%d", frame);
1538
1539             if(!f && (tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2 || stop_each_frame)) {
1540                 /* make the contructor add a frame script */
1541                 __ findpropstrict(c,"[package]::addFrameScript");
1542                 __ pushbyte(c,frame);
1543                 __ getlex(c,framename);
1544                 __ callpropvoid(c,"[package]::addFrameScript",2);
1545
1546                 f = abc_class_method(cls, 0, framename, 0);
1547                 f->max_stack = 3;
1548                 f->local_count = 1;
1549                 f->init_scope_depth = 10;
1550                 f->max_scope_depth = 11;
1551                 __ debugfile(f, "framescript.as");
1552                 __ debugline(f, 1);
1553                 __ getlocal_0(f);
1554                 __ pushscope(f);
1555             }
1556
1557             if(tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2) {
1558                 U16 id = swf_GetDefineID(tag);
1559                 sprintf(buttonname, "::button%d", swf_GetDefineID(tag));
1560                 __ getlex(f,buttonname);
1561                 __ getlex(f,"flash.events::MouseEvent");
1562                 __ getproperty(f, "::CLICK");
1563                 sprintf(functionname, "::clickbutton%d", swf_GetDefineID(tag));
1564                 __ getlex(f,functionname);
1565                 __ callpropvoid(f, "::addEventListener" ,2);
1566
1567                 if(stop_each_frame) {
1568                     __ findpropstrict(f, "[package]::stop");
1569                     __ callpropvoid(f, "[package]::stop", 0);
1570                 }
1571                 needs_framescript = 1;
1572
1573                 abc_method_body_t*h =
1574                     abc_class_method(cls, "::void", functionname, 1, "flash.events::MouseEvent");
1575                 h->max_stack = 6;
1576                 h->local_count = 2;
1577                 h->init_scope_depth = 10;
1578                 h->max_scope_depth = 11;
1579                 __ getlocal_0(h);
1580                 __ pushscope(h);
1581
1582                 ActionTAG*oldaction = swf_ButtonGetAction(tag);
1583                 if(oldaction && oldaction->op == ACTION__GOTOFRAME) {
1584                     int framenr = GET16(oldaction->data);
1585                     if(framenr>254) {
1586                         fprintf(stderr, "Warning: Couldn't translate jump to frame %d to flash 9 actionscript\n", framenr);
1587                     }
1588                     if(!events) {
1589                         __ findpropstrict(h,"[package]::gotoAndStop");
1590                         __ pushbyte(h,framenr+1);
1591                         __ callpropvoid(h,"[package]::gotoAndStop", 1);
1592                     } else {
1593                         char framename[80];
1594                         sprintf(framename, "frame%d", framenr);
1595                         __ getlocal_0(h); //this
1596                         __ findpropstrict(h, "[package]flash.events::TextEvent");
1597                         __ pushstring(h, "link");
1598                         __ pushtrue(h);
1599                         __ pushtrue(h);
1600                         __ pushstring(h, framename);
1601                         __ constructprop(h,"[package]flash.events::TextEvent", 4);
1602                         __ callpropvoid(h,"[package]::dispatchEvent", 1);
1603                     }
1604                 } else if(oldaction && oldaction->op == ACTION__GETURL) {
1605                     if(!events) {
1606                         __ findpropstrict(h,"flash.net::navigateToURL");
1607                         __ findpropstrict(h,"flash.net::URLRequest");
1608                         // TODO: target _blank
1609                         __ pushstring(h,oldaction->data); //url
1610                         __ constructprop(h,"flash.net::URLRequest", 1);
1611                         __ callpropvoid(h,"flash.net::navigateToURL", 1);
1612                     } else {
1613                         __ getlocal_0(h); //this
1614                         __ findpropstrict(h, "[package]flash.events::TextEvent");
1615                         __ pushstring(h, "link");
1616                         __ pushtrue(h);
1617                         __ pushtrue(h);
1618                         __ pushstring(h,oldaction->data); //url
1619                         __ constructprop(h,"[package]flash.events::TextEvent", 4);
1620                         __ callpropvoid(h,"[package]::dispatchEvent", 1);
1621                     }
1622                 } else if(oldaction) {
1623                     fprintf(stderr, "Warning: Couldn't translate button code of button %d to flash 9 abc action\n", id);
1624                 }
1625                 __ returnvoid(h);
1626                 swf_ActionFree(oldaction);
1627             }
1628             if(tag->id == ST_SHOWFRAME) {
1629                 if(f) {
1630                     __ returnvoid(f);
1631                     f = 0;
1632                 }
1633                 frame++;
1634             }
1635             tag = tag->next;
1636         }
1637         if(f) {
1638             __ returnvoid(f);
1639         }
1640     }
1641     __ returnvoid(c);
1642
1643     tag = swf->firstTag;
1644     while(tag) {
1645         if(tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2) {
1646             char buttonname[80];
1647             sprintf(buttonname, "::button%d", swf_GetDefineID(tag));
1648             abc_AddSlot(cls, buttonname, 0, "flash.display::SimpleButton");
1649         }
1650         tag = tag->next;
1651     }
1652
1653
1654     abc_script_t*s = abc_initscript(file, 0, 0);
1655     c = s->method->body;
1656     c->max_stack = 2;
1657     c->local_count = 1;
1658     c->init_scope_depth = 1;
1659     c->max_scope_depth = 9;
1660
1661     __ getlocal_0(c);
1662     __ pushscope(c);
1663     __ getscopeobject(c, 0);
1664     __ getlex(c,"::Object");
1665     __ pushscope(c);
1666     __ getlex(c,"flash.events::EventDispatcher");
1667     __ pushscope(c);
1668     __ getlex(c,"flash.display::DisplayObject");
1669     __ pushscope(c);
1670     __ getlex(c,"flash.display::InteractiveObject");
1671     __ pushscope(c);
1672     __ getlex(c,"flash.display::DisplayObjectContainer");
1673     __ pushscope(c);
1674     __ getlex(c,"flash.display::Sprite");
1675     __ pushscope(c);
1676     __ getlex(c,"flash.display::MovieClip");
1677     __ pushscope(c);
1678     __ getlex(c,"flash.display::MovieClip");
1679     __ newclass(c,cls);
1680     __ popscope(c);
1681     __ popscope(c);
1682     __ popscope(c);
1683     __ popscope(c);
1684     __ popscope(c);
1685     __ popscope(c);
1686     __ popscope(c);
1687     __ initproperty(c,"rfx::MainTimeline");
1688     __ returnvoid(c);
1689
1690     //abc_method_body_addClassTrait(c, "rfx:MainTimeline", 1, cls);
1691     abc_initscript_addClassTrait(s, "rfx::MainTimeline", 1, cls);
1692
1693     swf_WriteABC(abctag, file);
1694 }
1695