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 int abc_RegisterNameSpace(abc_file_t*file, const char*name);
  33 int abc_RegisterPackageNameSpace(abc_file_t*file, const char*name);
  34 int abc_RegisterPackageInternalNameSpace(abc_file_t*file, const char*name);
  35 int abc_RegisterProtectedNameSpace(abc_file_t*file, const char*name);
  36 int abc_RegisterExplicitNameSpace(abc_file_t*file, const char*name);
  37 int abc_RegisterStaticProtectedNameSpace(abc_file_t*file, const char*name);
  38 int abc_RegisterPrivateNameSpace(abc_file_t*file, const char*name);
  39
  40 /* TODO: switch to a datastructure with just values */
  41 #define NO_KEY ""
  42
  43 static char* params_tostring(multiname_list_t*list)
  44 {
  45     multiname_list_t*l;
  46     int n = list_length(list);
  47     char**names = (char**)malloc(sizeof(char*)*n);
  48
  49     l = list;
  50     n = 0;
  51     int size = 0;
  52     while(l) {
  53         names[n] = multiname_tostring(l->multiname);
  54         size += strlen(names[n]) + 2;
  55         n++;l=l->next;
  56     }
  57
  58     char* params = malloc(size+15);
  59     params[0]='(';
  60     params[1]=0;
  61     l = list;
  62     int s=0;
  63     n = 0;
  64     while(l) {
  65         if(s)
  66             strcat(params, ", ");
  67         strcat(params, names[n]);
  68         free(names[n]);
  69         l = l->next;
  70         n++;
  71         s=1;
  72     }
  73     free(names);
  74     /*char num[20];
  75     sprintf(num, "[%d params]", n);
  76     strcat(params, num);*/
  77     strcat(params, ")");
  78     int t;
  79     return params;
  80 }
  81
  82 //#define DEBUG
  83 #define DEBUG if(0)
  84
  85 static void parse_metadata(TAG*tag, abc_file_t*file, pool_t*pool)
  86 {
  87     int t;
  88     int num_metadata = swf_GetU30(tag);
  89
  90     DEBUG printf("%d metadata\n");
  91     for(t=0;t<num_metadata;t++) {
  92         const char*entry_name = pool_lookup_string(pool, swf_GetU30(tag));
  93         int num = swf_GetU30(tag);
  94         int s;
  95         DEBUG printf("  %s\n", entry_name);
  96         array_t*items = array_new();
  97         for(s=0;s<num;s++) {
  98             int i1 = swf_GetU30(tag);
  99             int i2 = swf_GetU30(tag);
 100             char*key = i1?pool_lookup_string(pool, i1):"";
 101             char*value = i2?pool_lookup_string(pool, i2):"";
 102             DEBUG printf("    %s=%s\n", key, value);
 103             array_append(items, key, strdup(value));
 104         }
 105         array_append(file->metadata, entry_name, items);
 106     }
 107 }
 108
 109 void swf_CopyData(TAG*to, TAG*from, int len)
 110 {
 111     unsigned char*data = malloc(len);
 112     swf_GetBlock(from, data, len);
 113     swf_SetBlock(to, data, len);
 114     free(data);
 115 }
 116
 117 abc_file_t*abc_file_new()
 118 {
 119     abc_file_t*f = malloc(sizeof(abc_file_t));
 120     memset(f, 0, sizeof(abc_file_t));
 121     f->metadata = array_new();
 122
 123     f->methods = array_new();
 124     f->classes = array_new();
 125     f->scripts = array_new();
 126     f->method_bodies = array_new();
 127     f->flags = ABCFILE_LAZY;
 128
 129     return f;
 130 }
 131
 132 #define CLASS_SEALED 1
 133 #define CLASS_FINAL 2
 134 #define CLASS_INTERFACE 4
 135 #define CLASS_PROTECTED_NS 8
 136
 137 abc_class_t* abc_class_new(abc_file_t*file, multiname_t*classname, multiname_t*superclass) {
 138
 139     NEW(abc_class_t,c);
 140     array_append(file->classes, NO_KEY, c);
 141
 142     c->file = file;
 143     c->classname = classname;
 144     c->superclass = superclass;
 145     c->flags = 0;
 146     c->constructor = 0;
 147     c->static_constructor = 0;
 148     c->traits = list_new();
 149     return c;
 150 }
 151 abc_class_t* abc_class_new2(abc_file_t*pool, char*classname, char*superclass)
 152 {
 153     return abc_class_new(pool, multiname_fromstring(classname), multiname_fromstring(superclass));
 154 }
 155
 156 void abc_class_sealed(abc_class_t*c)
 157 {
 158     c->flags |= CLASS_SEALED;
 159 }
 160 void abc_class_final(abc_class_t*c)
 161 {
 162     c->flags |= CLASS_FINAL;
 163 }
 164 void abc_class_interface(abc_class_t*c)
 165 {
 166     c->flags |= CLASS_INTERFACE;
 167 }
 168 void abc_class_protectedNS(abc_class_t*c, char*namespace)
 169 {
 170     c->protectedNS = namespace_new_protected(namespace);
 171     c->flags |= CLASS_PROTECTED_NS;
 172 }
 173 void abc_class_add_interface(abc_class_t*c, multiname_t*interface)
 174 {
 175     list_append(c->interfaces, interface);
 176 }
 177
 178 abc_method_body_t* add_method(abc_file_t*file, abc_class_t*cls, multiname_t*returntype, int num_params, va_list va)
 179 {
 180     /* construct code (method body) object */
 181     NEW(abc_method_body_t,c);
 182     array_append(file->method_bodies, NO_KEY, c);
 183     c->file = file;
 184     c->traits = list_new();
 185     c->code = 0;
 186
 187     /* construct method object */
 188     NEW(abc_method_t,m);
 189     array_append(file->methods, NO_KEY, m);
 190
 191     m->return_type = returntype;
 192
 193     int t;
 194     for(t=0;t<num_params;t++) {
 195         const char*param = va_arg(va, const char*);
 196         list_append(m->parameters, multiname_fromstring(param));
 197     }
 198
 199     /* crosslink the two objects */
 200     m->body = c;
 201     c->method = m;
 202
 203     return c;
 204 }
 205
 206 abc_method_body_t* abc_class_constructor(abc_class_t*cls, multiname_t*returntype, int num_params, ...)
 207 {
 208     va_list va;
 209     va_start(va, num_params);
 210     abc_method_body_t* c = add_method(cls->file, cls, returntype, num_params, va);
 211     va_end(va);
 212     cls->constructor = c->method;
 213     return c;
 214 }
 215
 216 abc_method_body_t* abc_class_staticconstructor(abc_class_t*cls, multiname_t*returntype, int num_params, ...)
 217 {
 218     va_list va;
 219     va_start(va, num_params);
 220     abc_method_body_t* c = add_method(cls->file, cls, returntype, num_params, va);
 221     va_end(va);
 222     cls->static_constructor = c->method;
 223     return c;
 224 }
 225
 226 trait_t*trait_new(int type, multiname_t*name, int data1, int data2, constant_t*v)
 227 {
 228     trait_t*trait = malloc(sizeof(trait_t));
 229     memset(trait, 0, sizeof(trait_t));
 230     trait->kind = type&0x0f;
 231     trait->attributes = type&0xf0;
 232     trait->name = name;
 233     trait->data1 = data1;
 234     trait->data2 = data2;
 235     trait->value = v;
 236     return trait;
 237 }
 238 trait_t*trait_new_member(multiname_t*type, multiname_t*name,constant_t*v)
 239 {
 240     int kind = TRAIT_SLOT;
 241     trait_t*trait = malloc(sizeof(trait_t));
 242     memset(trait, 0, sizeof(trait_t));
 243     trait->kind = kind&0x0f;
 244     trait->attributes = kind&0xf0;
 245     trait->name = name;
 246     trait->type_name = type;
 247     return trait;
 248 }
 249 trait_t*trait_new_method(multiname_t*name, abc_method_t*m)
 250 {
 251     int type = TRAIT_METHOD;
 252     trait_t*trait = malloc(sizeof(trait_t));
 253     memset(trait, 0, sizeof(trait_t));
 254     trait->kind = type&0x0f;
 255     trait->attributes = type&0xf0;
 256     trait->name = name;
 257     trait->method = m;
 258     return trait;
 259 }
 260
 261 abc_method_body_t* abc_class_method(abc_class_t*cls, multiname_t*returntype, char*name, int num_params, ...)
 262 {
 263     abc_file_t*file = cls->file;
 264     va_list va;
 265     va_start(va, num_params);
 266     abc_method_body_t* c = add_method(cls->file, cls, returntype, num_params, va);
 267     va_end(va);
 268     list_append(cls->traits, trait_new_method(multiname_fromstring(name), c->method));
 269     return c;
 270 }
 271
 272 void abc_AddSlot(abc_class_t*cls, char*name, int slot, char*type)
 273 {
 274     abc_file_t*file = cls->file;
 275     multiname_t*m_name = multiname_fromstring(name);
 276     multiname_t*m_type = multiname_fromstring(type);
 277     trait_t*t = trait_new_member(m_type, m_name, 0);
 278     t->slot_id = list_length(cls->traits);
 279     list_append(cls->traits, t);
 280 }
 281
 282 void abc_method_body_addClassTrait(abc_method_body_t*code, char*multiname, int slotid, abc_class_t*cls)
 283 {
 284     abc_file_t*file = code->file;
 285     multiname_t*m = multiname_fromstring(multiname);
 286     trait_t*trait = trait_new(TRAIT_CLASS, m, slotid, 0, 0);
 287     trait->cls = cls;
 288     list_append(code->traits, trait);
 289 }
 290
 291 /* notice: traits of a method (body) belonging to an init script
 292    and traits of the init script are *not* the same thing */
 293 int abc_initscript_addClassTrait(abc_script_t*script, multiname_t*multiname, abc_class_t*cls)
 294 {
 295     abc_file_t*file = script->file;
 296     multiname_t*m = multiname_clone(multiname);
 297     int slotid = list_length(script->traits)+1;
 298     trait_t*trait = trait_new(TRAIT_CLASS, m, slotid, 0, 0);
 299     trait->cls = cls;
 300     list_append(script->traits, trait);
 301     return slotid;
 302 }
 303
 304 abc_script_t* abc_initscript(abc_file_t*file, multiname_t*returntype, int num_params, ...)
 305 {
 306     va_list va;
 307     va_start(va, num_params);
 308     abc_method_body_t* c = add_method(file, 0, returntype, num_params, va);
 309     abc_script_t* s = malloc(sizeof(abc_script_t));
 310     s->method = c->method;
 311     s->traits = list_new();
 312     s->file = file;
 313     array_append(file->scripts, NO_KEY, s);
 314     va_end(va);
 315     return s;
 316 }
 317
 318 static void traits_dump(FILE*fo, const char*prefix, trait_list_t*traits, abc_file_t*file);
 319
 320 static void dump_method(FILE*fo, const char*prefix, const char*type, const char*name, abc_method_t*m, abc_file_t*file)
 321 {
 322     char*return_type = 0;
 323     if(m->return_type)
 324         return_type = multiname_tostring(m->return_type);
 325     else
 326         return_type = strdup("void");
 327     char*paramstr = params_tostring(m->parameters);
 328     fprintf(fo, "%s%s %s %s=%s %s (%d params)\n", prefix, type, return_type, name, m->name, paramstr, list_length(m->parameters));
 329     free(paramstr);paramstr=0;
 330     free(return_type);return_type=0;
 331
 332     abc_method_body_t*c = m->body;
 333     if(!c) {
 334         return;
 335     }
 336
 337     fprintf(fo, "%s[stack:%d locals:%d scope:%d-%d flags:",
 338             prefix, c->old.max_stack, c->old.local_count, c->old.init_scope_depth,
 339             c->old.max_scope_depth);
 340
 341
 342     int flags = c->method->flags;
 343     if(flags&METHOD_NEED_ARGUMENTS) {fprintf(fo, " need_arguments");flags&=~METHOD_NEED_ARGUMENTS;}
 344     if(flags&METHOD_NEED_ACTIVATION) {fprintf(fo, " need_activation");flags&=~METHOD_NEED_ACTIVATION;}
 345     if(flags&METHOD_NEED_REST) {fprintf(fo, " need_rest");flags&=~METHOD_NEED_REST;}
 346     if(flags&METHOD_HAS_OPTIONAL) {fprintf(fo, " has_optional");flags&=~METHOD_HAS_OPTIONAL;}
 347     if(flags&METHOD_SET_DXNS) {fprintf(fo, " set_dxns");flags&=~METHOD_SET_DXNS;}
 348     if(flags&METHOD_HAS_PARAM_NAMES) {fprintf(fo, " has_param_names");flags&=~METHOD_HAS_PARAM_NAMES;}
 349     if(flags) fprintf(fo, " %02x", flags);
 350     fprintf(fo, "]\n");
 351
 352
 353     char prefix2[80];
 354     sprintf(prefix2, "%s    ", prefix);
 355     if(c->traits)
 356         traits_dump(fo, prefix, c->traits, file);
 357     fprintf(fo, "%s{\n", prefix);
 358     code_dump(c->code, c->exceptions, file, prefix2, fo);
 359     fprintf(fo, "%s}\n\n", prefix);
 360 }
 361
 362 static void traits_free(trait_list_t*traits)
 363 {
 364     trait_list_t*t = traits;
 365     while(t) {
 366         if(t->trait->name) {
 367             multiname_destroy(t->trait->name);t->trait->name = 0;
 368         }
 369         if(t->trait->kind == TRAIT_SLOT || t->trait->kind == TRAIT_CONST) {
 370             multiname_destroy(t->trait->type_name);
 371         }
 372         if(t->trait->value) {
 373             constant_free(t->trait->value);t->trait->value = 0;
 374         }
 375         free(t->trait);t->trait = 0;
 376         t = t->next;
 377     }
 378     list_free(traits);
 379 }
 380
 381 static char trait_is_method(trait_t*trait)
 382 {
 383     return (trait->kind == TRAIT_METHOD || trait->kind == TRAIT_GETTER ||
 384             trait->kind == TRAIT_SETTER || trait->kind == TRAIT_FUNCTION);
 385 }
 386
 387 static trait_list_t* traits_parse(TAG*tag, pool_t*pool, abc_file_t*file)
 388 {
 389     int num_traits = swf_GetU30(tag);
 390     trait_list_t*traits = list_new();
 391     int t;
 392     if(num_traits) {
 393         DEBUG printf("%d traits\n", num_traits);
 394     }
 395
 396     for(t=0;t<num_traits;t++) {
 397         NEW(trait_t,trait);
 398         list_append(traits, trait);
 399
 400         trait->name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag))); // always a QName (ns,name)
 401
 402         const char*name = 0;
 403         DEBUG name = multiname_tostring(trait->name);
 404         U8 kind = swf_GetU8(tag);
 405         U8 attributes = kind&0xf0;
 406         kind&=0x0f;
 407         trait->kind = kind;
 408         trait->attributes = attributes;
 409         DEBUG printf("  trait %d) %s type=%02x\n", t, name, kind);
 410         if(kind == TRAIT_METHOD || kind == TRAIT_GETTER || kind == TRAIT_SETTER) { // method / getter / setter
 411             trait->disp_id = swf_GetU30(tag);
 412             trait->method = (abc_method_t*)array_getvalue(file->methods, swf_GetU30(tag));
 413             DEBUG printf("  method/getter/setter\n");
 414         } else if(kind == TRAIT_FUNCTION) { // function
 415             trait->slot_id =  swf_GetU30(tag);
 416             trait->method = (abc_method_t*)array_getvalue(file->methods, swf_GetU30(tag));
 417         } else if(kind == TRAIT_CLASS) { // class
 418             trait->slot_id = swf_GetU30(tag);
 419             trait->cls = (abc_class_t*)array_getvalue(file->classes, swf_GetU30(tag));
 420             DEBUG printf("  class %s %d %d\n", name, trait->slot_id, trait->cls);
 421         } else if(kind == TRAIT_SLOT || kind == TRAIT_CONST) { // slot, const
 422             /* a slot is a variable in a class that is shared amonst all instances
 423                of the same type, but which has a unique location in each object
 424                (in other words, slots are non-static, traits are static)
 425              */
 426             trait->slot_id = swf_GetU30(tag);
 427             trait->type_name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
 428             int vindex = swf_GetU30(tag);
 429             if(vindex) {
 430                 int vkind = swf_GetU8(tag);
 431                 trait->value = constant_fromindex(pool, vindex, vkind);
 432             }
 433             DEBUG printf("  slot %s %d %s (%s)\n", name, trait->slot_id, trait->type_name->name, constant_tostring(trait->value));
 434         } else {
 435             fprintf(stderr, "Can't parse trait type %d\n", kind);
 436         }
 437         if(attributes&0x40) {
 438             int num = swf_GetU30(tag);
 439             int s;
 440             for(s=0;s<num;s++) {
 441                 swf_GetU30(tag); //index into metadata array
 442             }
 443         }
 444     }
 445     return traits;
 446 }
 447
 448 void traits_skip(TAG*tag)
 449 {
 450     int num_traits = swf_GetU30(tag);
 451     int t;
 452     for(t=0;t<num_traits;t++) {
 453         swf_GetU30(tag);
 454         U8 kind = swf_GetU8(tag);
 455         U8 attributes = kind&0xf0;
 456         kind&=0x0f;
 457         swf_GetU30(tag);
 458         swf_GetU30(tag);
 459         if(kind == TRAIT_SLOT || kind == TRAIT_CONST) {
 460             if(swf_GetU30(tag)) swf_GetU8(tag);
 461         } else if(kind>TRAIT_CONST) {
 462             fprintf(stderr, "Can't parse trait type %d\n", kind);
 463         }
 464         if(attributes&0x40) {
 465             int s, num = swf_GetU30(tag);
 466             for(s=0;s<num;s++) swf_GetU30(tag);
 467         }
 468     }
 469 }
 470
 471
 472 static void traits_write(pool_t*pool, TAG*tag, trait_list_t*traits)
 473 {
 474     if(!traits) {
 475         swf_SetU30(tag, 0);
 476         return;
 477     }
 478     swf_SetU30(tag, list_length(traits));
 479     int s;
 480
 481     while(traits) {
 482         trait_t*trait = traits->trait;
 483
 484         swf_SetU30(tag, pool_register_multiname(pool, trait->name));
 485         swf_SetU8(tag, trait->kind|trait->attributes);
 486
 487         swf_SetU30(tag, trait->data1);
 488
 489         if(trait->kind == TRAIT_CLASS) {
 490             swf_SetU30(tag, trait->cls->index);
 491         } else if(trait->kind == TRAIT_GETTER ||
 492                   trait->kind == TRAIT_SETTER ||
 493                   trait->kind == TRAIT_METHOD) {
 494             swf_SetU30(tag, trait->method->index);
 495         } else if(trait->kind == TRAIT_SLOT ||
 496                   trait->kind == TRAIT_CONST) {
 497             int index = pool_register_multiname(pool, trait->type_name);
 498             swf_SetU30(tag, index);
 499         } else  {
 500             swf_SetU30(tag, trait->data2);
 501         }
 502
 503         if(trait->kind == TRAIT_SLOT || trait->kind == TRAIT_CONST) {
 504             int vindex = constant_get_index(pool, trait->value);
 505             swf_SetU30(tag, vindex);
 506             if(vindex) {
 507                 swf_SetU8(tag, trait->value->type);
 508             }
 509         }
 510         if(trait->attributes&0x40) {
 511             // metadata
 512             swf_SetU30(tag, 0);
 513         }
 514         traits = traits->next;
 515     }
 516 }
 517
 518
 519 static void traits_dump(FILE*fo, const char*prefix, trait_list_t*traits, abc_file_t*file)
 520 {
 521     int t;
 522     while(traits) {
 523         trait_t*trait = traits->trait;
 524         char*name = multiname_tostring(trait->name);
 525         U8 kind = trait->kind;
 526         U8 attributes = trait->attributes;
 527         if(kind == TRAIT_METHOD) {
 528             abc_method_t*m = trait->method;
 529             dump_method(fo, prefix, "method", name, m, file);
 530         } else if(kind == TRAIT_GETTER) {
 531             abc_method_t*m = trait->method;
 532             dump_method(fo, prefix, "getter", name, m, file);
 533         } else if(kind == TRAIT_SETTER) {
 534             abc_method_t*m = trait->method;
 535             dump_method(fo, prefix, "setter", name, m, file);
 536         } else if(kind == TRAIT_FUNCTION) { // function
 537             abc_method_t*m = trait->method;
 538             dump_method(fo, prefix, "function", name, m, file);
 539         } else if(kind == TRAIT_CLASS) { // class
 540             abc_class_t*cls = trait->cls;
 541             if(!cls) {
 542                 fprintf(fo, "%sslot %d: class %s=00000000\n", prefix, trait->slot_id, name);
 543             } else {
 544                 fprintf(fo, "%sslot %d: class %s=%s\n", prefix, trait->slot_id, name, cls->classname->name);
 545             }
 546         } else if(kind == TRAIT_SLOT || kind == TRAIT_CONST) { // slot, const
 547             int slot_id = trait->slot_id;
 548             char*type_name = multiname_tostring(trait->type_name);
 549             char*value = constant_tostring(trait->value);
 550             fprintf(fo, "%sslot %d: %s%s %s %s %s\n", prefix, trait->slot_id,
 551                     kind==TRAIT_CONST?"const ":"", type_name, name,
 552                     value?"=":"", value);
 553             if(value) free(value);
 554             free(type_name);
 555         } else {
 556             fprintf(fo, "%s    can't dump trait type %d\n", prefix, kind);
 557         }
 558         free(name);
 559         traits=traits->next;
 560     }
 561 }
 562
 563 void* swf_DumpABC(FILE*fo, void*code, char*prefix)
 564 {
 565     abc_file_t* file = (abc_file_t*)code;
 566
 567     if(file->name) {
 568         fprintf(fo, "%s#\n", prefix);
 569         fprintf(fo, "%s#name: %s\n", prefix, file->name);
 570         fprintf(fo, "%s#\n", prefix);
 571     }
 572
 573     int t;
 574     for(t=0;t<file->metadata->num;t++) {
 575         const char*entry_name = array_getkey(file->metadata, t);
 576         fprintf(fo, "%s#Metadata \"%s\":\n", prefix, entry_name);
 577         int s;
 578         array_t*items = (array_t*)array_getvalue(file->metadata, t);
 579         for(s=0;s<items->num;s++) {
 580             fprintf(fo, "%s#  %s=%s\n", prefix, array_getkey(items, s), array_getvalue(items,s));
 581         }
 582         fprintf(fo, "%s#\n", prefix);
 583     }
 584
 585     for(t=0;t<file->classes->num;t++) {
 586         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 587         char prefix2[80];
 588         sprintf(prefix2, "%s    ", prefix);
 589
 590         fprintf(fo, "%s", prefix);
 591         if(cls->flags&1) fprintf(fo, "sealed ");
 592         if(cls->flags&2) fprintf(fo, "final ");
 593         if(cls->flags&4) fprintf(fo, "interface ");
 594         if(cls->flags&8) {
 595             char*s = namespace_tostring(cls->protectedNS);
 596             fprintf(fo, "protectedNS(%s) ", s);
 597             free(s);
 598         }
 599
 600         char*classname = multiname_tostring(cls->classname);
 601         fprintf(fo, "class %s", classname);
 602         free(classname);
 603         if(cls->superclass) {
 604             char*supername = multiname_tostring(cls->superclass);
 605             fprintf(fo, " extends %s", supername);
 606             free(supername);
 607             multiname_list_t*ilist = cls->interfaces;
 608             if(ilist)
 609                 fprintf(fo, " implements");
 610             while(ilist) {
 611                 char*s = multiname_tostring(ilist->multiname);
 612                 fprintf(fo, " %s", s);
 613                 free(s);
 614                 ilist = ilist->next;
 615             }
 616             ilist->next;
 617         }
 618         if(cls->flags&0xf0)
 619             fprintf(fo, "extra flags=%02x\n", cls->flags&0xf0);
 620         fprintf(fo, "%s{\n", prefix);
 621
 622         if(cls->static_constructor)
 623             dump_method(fo, prefix2,"staticconstructor", "", cls->static_constructor, file);
 624         traits_dump(fo, prefix2, cls->static_traits, file);
 625
 626         char*n = multiname_tostring(cls->classname);
 627         if(cls->constructor)
 628             dump_method(fo, prefix2, "constructor", n, cls->constructor, file);
 629         free(n);
 630         traits_dump(fo, prefix2,cls->traits, file);
 631         fprintf(fo, "%s}\n", prefix);
 632
 633     }
 634     fprintf(fo, "%s\n", prefix);
 635
 636     for(t=0;t<file->scripts->num;t++) {
 637         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
 638         dump_method(fo, prefix,"initmethod", "init", s->method, file);
 639         traits_dump(fo, prefix, s->traits, file);
 640     }
 641     return file;
 642 }
 643
 644 void* swf_ReadABC(TAG*tag)
 645 {
 646     abc_file_t* file = abc_file_new();
 647     pool_t*pool = pool_new();
 648
 649     swf_SetTagPos(tag, 0);
 650     int t;
 651     if(tag->id == ST_DOABC) {
 652         U32 abcflags = swf_GetU32(tag);
 653         DEBUG printf("flags=%08x\n", abcflags);
 654         char*name= swf_GetString(tag);
 655         file->name = (name&&name[0])?strdup(name):0;
 656     }
 657     U32 version = swf_GetU32(tag);
 658     if(version!=0x002e0010) {
 659         fprintf(stderr, "Warning: unknown AVM2 version %08x\n", version);
 660     }
 661
 662     pool_read(pool, tag);
 663
 664     int num_methods = swf_GetU30(tag);
 665     DEBUG printf("%d methods\n", num_methods);
 666     for(t=0;t<num_methods;t++) {
 667         NEW(abc_method_t,m);
 668         int param_count = swf_GetU30(tag);
 669         int return_type_index = swf_GetU30(tag);
 670         if(return_type_index)
 671             m->return_type = multiname_clone(pool_lookup_multiname(pool, return_type_index));
 672         else
 673             m->return_type = 0;
 674
 675         int s;
 676         for(s=0;s<param_count;s++) {
 677             int type_index = swf_GetU30(tag);
 678
 679             /* type_index might be 0, which probably means "..." (varargs) */
 680             multiname_t*param = type_index?multiname_clone(pool_lookup_multiname(pool, type_index)):0;
 681             list_append(m->parameters, param);
 682         }
 683
 684         int namenr = swf_GetU30(tag);
 685         if(namenr)
 686             m->name = strdup(pool_lookup_string(pool, namenr));
 687         else
 688             m->name = strdup("");
 689
 690         m->flags = swf_GetU8(tag);
 691
 692         DEBUG printf("method %d) %s flags=%02x\n", t, params_tostring(m->parameters), m->flags);
 693
 694         if(m->flags&0x08) {
 695             /* TODO optional parameters */
 696             m->optional_parameters = list_new();
 697             int num = swf_GetU30(tag);
 698             int s;
 699             for(s=0;s<num;s++) {
 700                 int vindex = swf_GetU30(tag);
 701                 U8 vkind = swf_GetU8(tag); // specifies index type for "val"
 702                 constant_t*c = constant_fromindex(pool, vindex, vkind);
 703                 list_append(m->optional_parameters, c);
 704             }
 705         }
 706         if(m->flags&0x80) {
 707             /* debug information- not used by avm2 */
 708             multiname_list_t*l = m->parameters;
 709             while(l) {
 710                 char*name = pool_lookup_string(pool, swf_GetU30(tag));
 711                 l = l->next;
 712             }
 713         }
 714         array_append(file->methods, NO_KEY, m);
 715     }
 716
 717     parse_metadata(tag, file, pool);
 718
 719     /* skip classes, and scripts for now, and do the real parsing later */
 720     int num_classes = swf_GetU30(tag);
 721     int classes_pos = tag->pos;
 722     DEBUG printf("%d classes\n", num_classes);
 723     for(t=0;t<num_classes;t++) {
 724         abc_class_t*cls = malloc(sizeof(abc_class_t));
 725         memset(cls, 0, sizeof(abc_class_t));
 726
 727         DEBUG printf("class %d\n", t);
 728         swf_GetU30(tag); //classname
 729         swf_GetU30(tag); //supername
 730
 731         array_append(file->classes, NO_KEY, cls);
 732
 733         cls->flags = swf_GetU8(tag);
 734         if(cls->flags&8)
 735             swf_GetU30(tag); //protectedNS
 736         int s;
 737         int inum = swf_GetU30(tag); //interface count
 738         cls->interfaces = 0;
 739         for(s=0;s<inum;s++) {
 740             int interface_index = swf_GetU30(tag);
 741             multiname_t* m = multiname_clone(pool_lookup_multiname(pool, interface_index));
 742             list_append(cls->interfaces, m);
 743             DEBUG printf("  class %d interface: %s\n", t, m->name);
 744         }
 745
 746         swf_GetU30(tag); //iinit
 747         traits_skip(tag);
 748     }
 749     for(t=0;t<num_classes;t++) {
 750         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 751         int cinit = swf_GetU30(tag);
 752         cls->static_constructor = (abc_method_t*)array_getvalue(file->methods, cinit);
 753         traits_skip(tag);
 754     }
 755     int num_scripts = swf_GetU30(tag);
 756     DEBUG printf("%d scripts\n", num_scripts);
 757     for(t=0;t<num_scripts;t++) {
 758         int init = swf_GetU30(tag);
 759         traits_skip(tag);
 760     }
 761
 762     int num_method_bodies = swf_GetU30(tag);
 763     DEBUG printf("%d method bodies\n", num_method_bodies);
 764     for(t=0;t<num_method_bodies;t++) {
 765         int methodnr = swf_GetU30(tag);
 766         if(methodnr >= file->methods->num) {
 767             printf("Invalid method number: %d\n", methodnr);
 768             return 0;
 769         }
 770         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, methodnr);
 771         abc_method_body_t*c = malloc(sizeof(abc_method_body_t));
 772         memset(c, 0, sizeof(abc_method_body_t));
 773         c->old.max_stack = swf_GetU30(tag);
 774         c->old.local_count = swf_GetU30(tag);
 775         c->old.init_scope_depth = swf_GetU30(tag);
 776         c->old.max_scope_depth = swf_GetU30(tag);
 777
 778         c->init_scope_depth = c->old.init_scope_depth;
 779         int code_length = swf_GetU30(tag);
 780
 781         c->method = m;
 782         m->body = c;
 783
 784         int pos = tag->pos + code_length;
 785         codelookup_t*codelookup = 0;
 786         c->code = code_parse(tag, code_length, file, pool, &codelookup);
 787         tag->pos = pos;
 788
 789         int exception_count = swf_GetU30(tag);
 790         int s;
 791         c->exceptions = list_new();
 792         for(s=0;s<exception_count;s++) {
 793             abc_exception_t*e = malloc(sizeof(abc_exception_t));
 794
 795             e->from = code_atposition(codelookup, swf_GetU30(tag));
 796             e->to = code_atposition(codelookup, swf_GetU30(tag));
 797             e->target = code_atposition(codelookup, swf_GetU30(tag));
 798
 799             e->exc_type = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
 800             e->var_name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
 801             //e->var_name = pool_lookup_string(pool, swf_GetU30(tag));
 802             //if(e->var_name) e->var_name = strdup(e->var_name);
 803             list_append(c->exceptions, e);
 804         }
 805         codelookup_free(codelookup);
 806         c->traits = traits_parse(tag, pool, file);
 807
 808         DEBUG printf("method_body %d) (method %d), %d bytes of code", t, methodnr, code_length);
 809
 810         array_append(file->method_bodies, NO_KEY, c);
 811     }
 812     if(tag->len - tag->pos) {
 813         fprintf(stderr, "%d unparsed bytes remaining in ABC block\n", tag->len - tag->pos);
 814         return 0;
 815     }
 816
 817     swf_SetTagPos(tag, classes_pos);
 818     for(t=0;t<num_classes;t++) {
 819         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 820
 821         int classname_index = swf_GetU30(tag);
 822         int superclass_index = swf_GetU30(tag);
 823         cls->classname = multiname_clone(pool_lookup_multiname(pool, classname_index));
 824         cls->superclass = multiname_clone(pool_lookup_multiname(pool, superclass_index));
 825         cls->flags = swf_GetU8(tag);
 826         const char*ns = "";
 827         if(cls->flags&8) {
 828             int ns_index = swf_GetU30(tag);
 829             cls->protectedNS = namespace_clone(pool_lookup_namespace(pool, ns_index));
 830         }
 831
 832         int num_interfaces = swf_GetU30(tag); //interface count
 833         int s;
 834         for(s=0;s<num_interfaces;s++) {
 835             swf_GetU30(tag); // multiname index TODO
 836         }
 837         int iinit = swf_GetU30(tag);
 838         cls->constructor = (abc_method_t*)array_getvalue(file->methods, iinit);
 839         cls->traits = traits_parse(tag, pool, file);
 840     }
 841     for(t=0;t<num_classes;t++) {
 842         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 843         /* SKIP */
 844         swf_GetU30(tag); // cindex
 845         cls->static_traits = traits_parse(tag, pool, file);
 846     }
 847     int num_scripts2 = swf_GetU30(tag);
 848     for(t=0;t<num_scripts2;t++) {
 849         int init = swf_GetU30(tag);
 850         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, init);
 851
 852         abc_script_t*s = malloc(sizeof(abc_script_t));
 853         memset(s, 0, sizeof(abc_script_t));
 854         s->method = m;
 855         s->traits = traits_parse(tag, pool, file);
 856         array_append(file->scripts, NO_KEY, s);
 857     }
 858
 859     pool_destroy(pool);
 860     return file;
 861 }
 862
 863 void swf_WriteABC(TAG*abctag, void*code)
 864 {
 865     abc_file_t*file = (abc_file_t*)code;
 866     pool_t*pool = pool_new();
 867
 868     TAG*tmp = swf_InsertTag(0,0);
 869     TAG*tag = tmp;
 870     int t;
 871
 872     for(t=0;t<file->classes->num;t++) {
 873         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
 874         if(!c->constructor) {
 875             NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
 876             NEW(abc_method_body_t,body);array_append(file->method_bodies, NO_KEY, body);
 877             body->method = m; m->body = body;
 878             __ returnvoid(body);
 879             c->constructor = m;
 880         }
 881         if(!c->static_constructor) {
 882             NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
 883             NEW(abc_method_body_t,body);array_append(file->method_bodies, NO_KEY, body);
 884             body->method = m; m->body = body;
 885             __ returnvoid(body);
 886             c->static_constructor = m;
 887         }
 888     }
 889
 890
 891     swf_SetU30(tag, file->methods->num);
 892     /* enumerate classes, methods and method bodies */
 893     for(t=0;t<file->methods->num;t++) {
 894         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
 895         m->index = t;
 896     }
 897     for(t=0;t<file->classes->num;t++) {
 898         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
 899         c->index = t;
 900     }
 901     for(t=0;t<file->method_bodies->num;t++) {
 902         abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
 903         m->index = t;
 904     }
 905
 906     /* generate code statistics */
 907     for(t=0;t<file->method_bodies->num;t++) {
 908         abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
 909         m->stats = code_get_statistics(m->code, m->exceptions);
 910     }
 911
 912     /* level init scope depths: The init scope depth of a method is
 913        always as least as high as the init scope depth of it's surrounding
 914        class.
 915        A method has it's own init_scope_depth if it's an init method
 916        (then its init scope depth is zero), or if it's used as a closure.
 917
 918        Not sure yet what to do with methods which are used at different
 919        locations- e.g. the nullmethod is used all over the place.
 920        EDIT: flashplayer doesn't allow this anyway- a method can only
 921              be used once
 922
 923        Also, I have the strong suspicion that flash player uses only
 924        the difference between max_scope_stack and init_scope_stack, anyway.
 925      */
 926     for(t=0;t<file->classes->num;t++) {
 927         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
 928         trait_list_t*traits = c->traits;
 929         if(c->constructor &&
 930            c->constructor->body->init_scope_depth < c->init_scope_depth) {
 931            c->constructor->body->init_scope_depth = c->init_scope_depth;
 932         }
 933         if(c->static_constructor &&
 934            c->static_constructor->body->init_scope_depth < c->init_scope_depth) {
 935            c->static_constructor->body->init_scope_depth = c->init_scope_depth;
 936         }
 937         while(traits) {
 938             trait_t*trait = traits->trait;
 939             if(trait_is_method(trait) && trait->method->body) {
 940                 abc_method_body_t*body = trait->method->body;
 941                 if(body->init_scope_depth < c->init_scope_depth) {
 942                    body->init_scope_depth = c->init_scope_depth;
 943                 }
 944             }
 945             traits = traits->next;
 946         }
 947     }
 948
 949     for(t=0;t<file->methods->num;t++) {
 950         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
 951         int n = 0;
 952         multiname_list_t*l = m->parameters;
 953         int num_params = list_length(m->parameters);
 954         swf_SetU30(tag, num_params);
 955         if(m->return_type)
 956             swf_SetU30(tag, pool_register_multiname(pool, m->return_type));
 957         else
 958             swf_SetU30(tag, 0);
 959         int s;
 960         while(l) {
 961             swf_SetU30(tag, pool_register_multiname(pool, l->multiname));
 962             l = l->next;
 963         }
 964         if(m->name) {
 965             swf_SetU30(tag, pool_register_string(pool, m->name));
 966         } else {
 967             swf_SetU30(tag, 0);
 968         }
 969
 970         U8 flags = m->flags&(METHOD_NEED_REST|METHOD_NEED_ARGUMENTS);
 971         if(m->optional_parameters)
 972             flags |= METHOD_HAS_OPTIONAL;
 973         if(m->body) {
 974             flags |= m->body->stats->flags;
 975         }
 976
 977         swf_SetU8(tag, flags);
 978         if(flags&METHOD_HAS_OPTIONAL) {
 979             swf_SetU30(tag, list_length(m->optional_parameters));
 980             constant_list_t*l = m->optional_parameters;
 981             while(l) {
 982                 swf_SetU30(tag, constant_get_index(pool, l->constant));
 983                 swf_SetU8(tag, l->constant->type);
 984                 l = l->next;
 985             }
 986         }
 987     }
 988
 989     /* write metadata */
 990     swf_SetU30(tag, file->metadata->num);
 991     for(t=0;t<file->metadata->num;t++) {
 992         const char*entry_name = array_getkey(file->metadata, t);
 993         swf_SetU30(tag, pool_register_string(pool, entry_name));
 994         array_t*items = (array_t*)array_getvalue(file->metadata, t);
 995         swf_SetU30(tag, items->num);
 996         int s;
 997         for(s=0;s<items->num;s++) {
 998             int i1 = pool_register_string(pool, array_getkey(items, s));
 999             int i2 = pool_register_string(pool, array_getvalue(items, s));
1000             swf_SetU30(tag, i1);
1001             swf_SetU30(tag, i2);
1002         }
1003     }
1004
1005     swf_SetU30(tag, file->classes->num);
1006     for(t=0;t<file->classes->num;t++) {
1007         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1008
1009         int classname_index = pool_register_multiname(pool, c->classname);
1010         int superclass_index = pool_register_multiname(pool, c->superclass);
1011
1012         swf_SetU30(tag, classname_index);
1013         swf_SetU30(tag, superclass_index);
1014
1015         swf_SetU8(tag, c->flags); // flags
1016         if(c->flags&0x08) {
1017             int ns_index = pool_register_namespace(pool, c->protectedNS);
1018             swf_SetU30(tag, ns_index);
1019         }
1020
1021         swf_SetU30(tag, list_length(c->interfaces));
1022         multiname_list_t*interface= c->interfaces;
1023         while(interface) {
1024             swf_SetU30(tag, pool_register_multiname(pool, interface->multiname));
1025             interface = interface->next;
1026         }
1027
1028         assert(c->constructor);
1029         swf_SetU30(tag, c->constructor->index);
1030
1031         traits_write(pool, tag, c->traits);
1032     }
1033     for(t=0;t<file->classes->num;t++) {
1034         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1035         assert(c->static_constructor);
1036         swf_SetU30(tag, c->static_constructor->index);
1037
1038         traits_write(pool, tag, c->static_traits);
1039     }
1040
1041     swf_SetU30(tag, file->scripts->num);
1042     for(t=0;t<file->scripts->num;t++) {
1043         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
1044         swf_SetU30(tag, s->method->index); //!=t!
1045         traits_write(pool, tag, s->traits);
1046     }
1047
1048     swf_SetU30(tag, file->method_bodies->num);
1049     for(t=0;t<file->method_bodies->num;t++) {
1050         abc_method_body_t*c = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1051         abc_method_t*m = c->method;
1052         swf_SetU30(tag, m->index);
1053
1054         //swf_SetU30(tag, c->old.max_stack);
1055         //swf_SetU30(tag, c->old.local_count);
1056         //swf_SetU30(tag, c->old.init_scope_depth);
1057         //swf_SetU30(tag, c->old.max_scope_depth);
1058
1059         swf_SetU30(tag, c->stats->max_stack);
1060         if(list_length(c->method->parameters)+1 <= c->stats->local_count)
1061             swf_SetU30(tag, c->stats->local_count);
1062         else
1063             swf_SetU30(tag, list_length(c->method->parameters)+1);
1064         swf_SetU30(tag, c->init_scope_depth);
1065         swf_SetU30(tag, c->stats->max_scope_depth+
1066                         c->init_scope_depth);
1067
1068         code_write(tag, c->code, pool, file);
1069
1070         swf_SetU30(tag, list_length(c->exceptions));
1071         abc_exception_list_t*l = c->exceptions;
1072         while(l) {
1073             // warning: assumes "pos" in each code_t is up-to-date
1074             swf_SetU30(tag, l->abc_exception->from->pos);
1075             swf_SetU30(tag, l->abc_exception->to->pos);
1076             swf_SetU30(tag, l->abc_exception->target->pos);
1077             swf_SetU30(tag, pool_register_multiname(pool, l->abc_exception->exc_type));
1078             swf_SetU30(tag, pool_register_multiname(pool, l->abc_exception->var_name));
1079             l = l->next;
1080         }
1081
1082         traits_write(pool, tag, c->traits);
1083     }
1084
1085     /* free temporary codestat data again. Notice: If we were to write this
1086        file multiple times, this can also be shifted to abc_file_free() */
1087     for(t=0;t<file->method_bodies->num;t++) {
1088         abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1089         codestats_free(m->stats);m->stats=0;
1090     }
1091
1092     // --- start to write real tag --
1093
1094     tag = abctag;
1095
1096     if(tag->id == ST_DOABC) {
1097         swf_SetU32(tag, file->flags); // flags
1098         swf_SetString(tag, file->name);
1099     }
1100
1101     swf_SetU16(tag, 0x10); //version
1102     swf_SetU16(tag, 0x2e);
1103
1104     pool_write(pool, tag);
1105
1106     swf_SetBlock(tag, tmp->data, tmp->len);
1107
1108     swf_DeleteTag(0, tmp);
1109     pool_destroy(pool);
1110 }
1111
1112 void abc_file_free(abc_file_t*file)
1113 {
1114     int t;
1115     if(file->metadata) {
1116         for(t=0;t<file->metadata->num;t++) {
1117             array_t*items = (array_t*)array_getvalue(file->metadata, t);
1118             int s;
1119             for(s=0;s<items->num;s++) {
1120                 free(array_getvalue(items, s));
1121             }
1122             array_free(items);
1123         }
1124         array_free(file->metadata);file->metadata=0;
1125     }
1126
1127     for(t=0;t<file->methods->num;t++) {
1128         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
1129
1130         multiname_list_t*param = m->parameters;
1131         while(param) {
1132             multiname_destroy(param->multiname);param->multiname=0;
1133             param = param->next;
1134         }
1135         list_free(m->parameters);m->parameters=0;
1136
1137         constant_list_t*opt = m->optional_parameters;
1138         while(opt) {
1139             constant_free(opt->constant);opt->constant=0;
1140             opt = opt->next;
1141         }
1142         list_free(m->optional_parameters);m->optional_parameters=0;
1143
1144         if(m->name) {
1145             free((void*)m->name);m->name=0;
1146         }
1147         if(m->return_type) {
1148             multiname_destroy(m->return_type);
1149         }
1150         free(m);
1151     }
1152     array_free(file->methods);file->methods=0;
1153
1154     for(t=0;t<file->classes->num;t++) {
1155         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
1156         traits_free(cls->traits);cls->traits=0;
1157         traits_free(cls->static_traits);cls->static_traits=0;
1158
1159         if(cls->classname) {
1160             multiname_destroy(cls->classname);
1161         }
1162         if(cls->superclass) {
1163             multiname_destroy(cls->superclass);
1164         }
1165
1166         multiname_list_t*i = cls->interfaces;
1167         while(i) {
1168             multiname_destroy(i->multiname);i->multiname=0;
1169             i = i->next;
1170         }
1171         list_free(cls->interfaces);cls->interfaces=0;
1172
1173         if(cls->protectedNS) {
1174             namespace_destroy(cls->protectedNS);
1175         }
1176         free(cls);
1177     }
1178     array_free(file->classes);file->classes=0;
1179
1180     for(t=0;t<file->scripts->num;t++) {
1181         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
1182         traits_free(s->traits);s->traits=0;
1183         free(s);
1184     }
1185     array_free(file->scripts);file->scripts=0;
1186
1187     for(t=0;t<file->method_bodies->num;t++) {
1188         abc_method_body_t*body = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1189         code_free(body->code);body->code=0;
1190         traits_free(body->traits);body->traits=0;
1191
1192         abc_exception_list_t*ee = body->exceptions;
1193         while(ee) {
1194             abc_exception_t*e=ee->abc_exception;ee->abc_exception=0;
1195             e->from = e->to = e->target = 0;
1196             multiname_destroy(e->exc_type);e->exc_type=0;
1197             multiname_destroy(e->var_name);e->var_name=0;
1198             free(e);
1199             ee=ee->next;
1200         }
1201         list_free(body->exceptions);body->exceptions=0;
1202
1203         free(body);
1204     }
1205     array_free(file->method_bodies);file->method_bodies=0;
1206
1207     if(file->name) {
1208         free((void*)file->name);file->name=0;
1209     }
1210
1211     free(file);
1212 }
1213
1214 void swf_FreeABC(void*code)
1215 {
1216     abc_file_t*file= (abc_file_t*)code;
1217     abc_file_free(file);
1218 }
1219
1220 void swf_AddButtonLinks(SWF*swf, char stop_each_frame, char events)
1221 {
1222     int num_frames = 0;
1223     int has_buttons = 0;
1224     TAG*tag=swf->firstTag;
1225     while(tag) {
1226         if(tag->id == ST_SHOWFRAME)
1227             num_frames++;
1228         if(tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2)
1229             has_buttons = 1;
1230         tag = tag->next;
1231     }
1232
1233     abc_file_t*file = abc_file_new();
1234     abc_method_body_t*c = 0;
1235
1236     abc_class_t*cls = abc_class_new2(file, "rfx::MainTimeline", "flash.display::MovieClip");
1237     abc_class_protectedNS(cls, "rfx:MainTimeline");
1238
1239     TAG*abctag = swf_InsertTagBefore(swf, swf->firstTag, ST_DOABC);
1240
1241     tag = swf_InsertTag(abctag, ST_SYMBOLCLASS);
1242     swf_SetU16(tag, 1);
1243     swf_SetU16(tag, 0);
1244     swf_SetString(tag, "rfx.MainTimeline");
1245
1246     c = abc_class_staticconstructor(cls, 0, 0);
1247     c->old.max_stack = 1;
1248     c->old.local_count = 1;
1249     c->old.init_scope_depth = 9;
1250     c->old.max_scope_depth = 10;
1251
1252     __ getlocal_0(c);
1253     __ pushscope(c);
1254     __ returnvoid(c);
1255
1256     c = abc_class_constructor(cls, 0, 0);
1257     c->old.max_stack = 3;
1258     c->old.local_count = 1;
1259     c->old.init_scope_depth = 10;
1260     c->old.max_scope_depth = 11;
1261
1262     debugfile(c, "constructor.as");
1263
1264     __ getlocal_0(c);
1265     __ pushscope(c);
1266
1267     __ getlocal_0(c);
1268     __ constructsuper(c,0);
1269
1270     __ getlex(c, "[package]flash.system::Security");
1271     __ pushstring(c, "*");
1272     __ callpropvoid(c, "[package]::allowDomain", 1);
1273
1274     if(stop_each_frame || has_buttons) {
1275         int frame = 0;
1276         tag = swf->firstTag;
1277         abc_method_body_t*f = 0; //frame script
1278         while(tag && tag->id!=ST_END) {
1279             char framename[80];
1280             char needs_framescript=0;
1281             char buttonname[80];
1282             char functionname[80];
1283             sprintf(framename, "[packageinternal]rfx::frame%d", frame);
1284
1285             if(!f && (tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2 || stop_each_frame)) {
1286                 /* make the contructor add a frame script */
1287                 __ findpropstrict(c,"[package]::addFrameScript");
1288                 __ pushbyte(c,frame);
1289                 __ getlex(c,framename);
1290                 __ callpropvoid(c,"[package]::addFrameScript",2);
1291
1292                 f = abc_class_method(cls, 0, framename, 0);
1293                 f->old.max_stack = 3;
1294                 f->old.local_count = 1;
1295                 f->old.init_scope_depth = 10;
1296                 f->old.max_scope_depth = 11;
1297                 __ debugfile(f, "framescript.as");
1298                 __ debugline(f, 1);
1299                 __ getlocal_0(f);
1300                 __ pushscope(f);
1301             }
1302
1303             if(tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2) {
1304                 U16 id = swf_GetDefineID(tag);
1305                 sprintf(buttonname, "::button%d", swf_GetDefineID(tag));
1306                 __ getlex(f,buttonname);
1307                 __ getlex(f,"flash.events::MouseEvent");
1308                 __ getproperty(f, "::CLICK");
1309                 sprintf(functionname, "::clickbutton%d", swf_GetDefineID(tag));
1310                 __ getlex(f,functionname);
1311                 __ callpropvoid(f, "::addEventListener" ,2);
1312
1313                 if(stop_each_frame) {
1314                     __ findpropstrict(f, "[package]::stop");
1315                     __ callpropvoid(f, "[package]::stop", 0);
1316                 }
1317                 needs_framescript = 1;
1318
1319                 abc_method_body_t*h =
1320                     abc_class_method(cls, 0, functionname, 1, "flash.events::MouseEvent");
1321                 h->old.max_stack = 6;
1322                 h->old.local_count = 2;
1323                 h->old.init_scope_depth = 10;
1324                 h->old.max_scope_depth = 11;
1325                 __ getlocal_0(h);
1326                 __ pushscope(h);
1327
1328                 ActionTAG*oldaction = swf_ButtonGetAction(tag);
1329                 if(oldaction && oldaction->op == ACTION__GOTOFRAME) {
1330                     int framenr = GET16(oldaction->data);
1331                     if(framenr>254) {
1332                         fprintf(stderr, "Warning: Couldn't translate jump to frame %d to flash 9 actionscript\n", framenr);
1333                     }
1334                     if(!events) {
1335                         __ findpropstrict(h,"[package]::gotoAndStop");
1336                         __ pushbyte(h,framenr+1);
1337                         __ callpropvoid(h,"[package]::gotoAndStop", 1);
1338                     } else {
1339                         char framename[80];
1340                         sprintf(framename, "frame%d", framenr);
1341                         __ getlocal_0(h); //this
1342                         __ findpropstrict(h, "[package]flash.events::TextEvent");
1343                         __ pushstring(h, "link");
1344                         __ pushtrue(h);
1345                         __ pushtrue(h);
1346                         __ pushstring(h, framename);
1347                         __ constructprop(h,"[package]flash.events::TextEvent", 4);
1348                         __ callpropvoid(h,"[package]::dispatchEvent", 1);
1349                     }
1350                 } else if(oldaction && oldaction->op == ACTION__GETURL) {
1351                     if(!events) {
1352                         __ findpropstrict(h,"flash.net::navigateToURL");
1353                         __ findpropstrict(h,"flash.net::URLRequest");
1354                         // TODO: target _blank
1355                         __ pushstring(h,oldaction->data); //url
1356                         __ constructprop(h,"flash.net::URLRequest", 1);
1357                         __ callpropvoid(h,"flash.net::navigateToURL", 1);
1358                     } else {
1359                         __ getlocal_0(h); //this
1360                         __ findpropstrict(h, "[package]flash.events::TextEvent");
1361                         __ pushstring(h, "link");
1362                         __ pushtrue(h);
1363                         __ pushtrue(h);
1364                         __ pushstring(h,oldaction->data); //url
1365                         __ constructprop(h,"[package]flash.events::TextEvent", 4);
1366                         __ callpropvoid(h,"[package]::dispatchEvent", 1);
1367                     }
1368                 } else if(oldaction) {
1369                     fprintf(stderr, "Warning: Couldn't translate button code of button %d to flash 9 abc action\n", id);
1370                 }
1371                 __ returnvoid(h);
1372                 swf_ActionFree(oldaction);
1373             }
1374             if(tag->id == ST_SHOWFRAME) {
1375                 if(f) {
1376                     __ returnvoid(f);
1377                     f = 0;
1378                 }
1379                 frame++;
1380             }
1381             tag = tag->next;
1382         }
1383         if(f) {
1384             __ returnvoid(f);
1385         }
1386     }
1387     __ returnvoid(c);
1388
1389     tag = swf->firstTag;
1390     while(tag) {
1391         if(tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2) {
1392             char buttonname[80];
1393             sprintf(buttonname, "::button%d", swf_GetDefineID(tag));
1394             abc_AddSlot(cls, buttonname, 0, "flash.display::SimpleButton");
1395         }
1396         tag = tag->next;
1397     }
1398
1399
1400     abc_script_t*s = abc_initscript(file, 0, 0);
1401     c = s->method->body;
1402     c->old.max_stack = 2;
1403     c->old.local_count = 1;
1404     c->old.init_scope_depth = 1;
1405     c->old.max_scope_depth = 9;
1406
1407     __ getlocal_0(c);
1408     __ pushscope(c);
1409     __ getscopeobject(c, 0);
1410     __ getlex(c,"::Object");
1411     __ pushscope(c);
1412     __ getlex(c,"flash.events::EventDispatcher");
1413     __ pushscope(c);
1414     __ getlex(c,"flash.display::DisplayObject");
1415     __ pushscope(c);
1416     __ getlex(c,"flash.display::InteractiveObject");
1417     __ pushscope(c);
1418     __ getlex(c,"flash.display::DisplayObjectContainer");
1419     __ pushscope(c);
1420     __ getlex(c,"flash.display::Sprite");
1421     __ pushscope(c);
1422     __ getlex(c,"flash.display::MovieClip");
1423     __ pushscope(c);
1424     __ getlex(c,"flash.display::MovieClip");
1425     __ newclass(c,cls);
1426     __ popscope(c);
1427     __ popscope(c);
1428     __ popscope(c);
1429     __ popscope(c);
1430     __ popscope(c);
1431     __ popscope(c);
1432     __ popscope(c);
1433     __ initproperty(c,"rfx::MainTimeline");
1434     __ returnvoid(c);
1435
1436     //abc_method_body_addClassTrait(c, "rfx:MainTimeline", 1, cls);
1437     multiname_t*classname = multiname_fromstring("rfx::MainTimeline");
1438     abc_initscript_addClassTrait(s, classname, cls);
1439     multiname_destroy(classname);
1440
1441     swf_WriteABC(abctag, file);
1442 }
1443