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             const char*key = i1?pool_lookup_string(pool, i1):"";
 101             const 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 abc_class_t* abc_class_new(abc_file_t*file, multiname_t*classname, multiname_t*superclass) {
 133
 134     NEW(abc_class_t,c);
 135     array_append(file->classes, NO_KEY, c);
 136
 137     c->file = file;
 138     c->classname = multiname_clone(classname);
 139     c->superclass = multiname_clone(superclass);
 140     c->flags = 0;
 141     c->constructor = 0;
 142     c->static_constructor = 0;
 143     c->traits = list_new();
 144     return c;
 145 }
 146 abc_class_t* abc_class_new2(abc_file_t*pool, char*classname, char*superclass)
 147 {
 148     return abc_class_new(pool, multiname_fromstring(classname), multiname_fromstring(superclass));
 149 }
 150
 151 void abc_class_sealed(abc_class_t*c)
 152 {
 153     c->flags |= CLASS_SEALED;
 154 }
 155 void abc_class_final(abc_class_t*c)
 156 {
 157     c->flags |= CLASS_FINAL;
 158 }
 159 void abc_class_interface(abc_class_t*c)
 160 {
 161     c->flags |= CLASS_INTERFACE;
 162 }
 163 void abc_class_protectedNS(abc_class_t*c, char*namespace)
 164 {
 165     c->protectedNS = namespace_new_protected(namespace);
 166     c->flags |= CLASS_PROTECTED_NS;
 167 }
 168 void abc_class_add_interface(abc_class_t*c, multiname_t*interface)
 169 {
 170     list_append(c->interfaces, multiname_clone(interface));
 171 }
 172
 173 abc_method_body_t* add_method(abc_file_t*file, abc_class_t*cls, multiname_t*returntype, int num_params, va_list va)
 174 {
 175     /* construct code (method body) object */
 176     NEW(abc_method_body_t,c);
 177     array_append(file->method_bodies, NO_KEY, c);
 178     c->index = array_length(file->method_bodies);
 179     c->file = file;
 180     c->traits = list_new();
 181     c->code = 0;
 182
 183     /* construct method object */
 184     NEW(abc_method_t,m);
 185     m->index = array_length(file->methods);
 186     array_append(file->methods, NO_KEY, m);
 187
 188     m->return_type = returntype;
 189
 190     int t;
 191     for(t=0;t<num_params;t++) {
 192         const char*param = va_arg(va, const char*);
 193         list_append(m->parameters, multiname_fromstring(param));
 194     }
 195
 196     /* crosslink the two objects */
 197     m->body = c;
 198     c->method = m;
 199
 200     return c;
 201 }
 202
 203 abc_method_body_t* abc_class_constructor(abc_class_t*cls, multiname_t*returntype, int num_params, ...)
 204 {
 205     va_list va;
 206     va_start(va, num_params);
 207     abc_method_body_t* c = add_method(cls->file, cls, returntype, num_params, va);
 208     va_end(va);
 209     cls->constructor = c->method;
 210     return c;
 211 }
 212
 213 abc_method_body_t* abc_class_staticconstructor(abc_class_t*cls, multiname_t*returntype, int num_params, ...)
 214 {
 215     va_list va;
 216     va_start(va, num_params);
 217     abc_method_body_t* c = add_method(cls->file, cls, returntype, num_params, va);
 218     va_end(va);
 219     cls->static_constructor = c->method;
 220     return c;
 221 }
 222
 223 trait_t*trait_new(int type, multiname_t*name, int data1, int data2, constant_t*v)
 224 {
 225     trait_t*trait = malloc(sizeof(trait_t));
 226     memset(trait, 0, sizeof(trait_t));
 227     trait->kind = type&0x0f;
 228     trait->attributes = type&0xf0;
 229     trait->name = name;
 230     trait->data1 = data1;
 231     trait->data2 = data2;
 232     trait->value = v;
 233     return trait;
 234 }
 235 trait_t*trait_new_member(multiname_t*type, multiname_t*name,constant_t*v)
 236 {
 237     int kind = TRAIT_SLOT;
 238     trait_t*trait = malloc(sizeof(trait_t));
 239     memset(trait, 0, sizeof(trait_t));
 240     trait->kind = kind&0x0f;
 241     trait->attributes = kind&0xf0;
 242     trait->name = name;
 243     trait->type_name = type;
 244     return trait;
 245 }
 246 trait_t*trait_new_method(multiname_t*name, abc_method_t*m)
 247 {
 248     int type = TRAIT_METHOD;
 249     trait_t*trait = malloc(sizeof(trait_t));
 250     memset(trait, 0, sizeof(trait_t));
 251     trait->kind = type&0x0f;
 252     trait->attributes = type&0xf0;
 253     trait->name = name;
 254     trait->method = m;
 255     return trait;
 256 }
 257
 258 abc_method_body_t* abc_class_method(abc_class_t*cls, multiname_t*returntype, char*name, int num_params, ...)
 259 {
 260     abc_file_t*file = cls->file;
 261     va_list va;
 262     va_start(va, num_params);
 263     abc_method_body_t* c = add_method(cls->file, cls, returntype, num_params, va);
 264     va_end(va);
 265     trait_t*t = trait_new_method(multiname_fromstring(name), c->method);
 266     c->method->trait = t;
 267     /* start assigning traits at position #1.
 268        Weird things happen when assigning slot 0- slot 0 and 1 seem
 269        to be identical */
 270     t->slot_id = list_length(cls->traits)+1;
 271     list_append(cls->traits, t);
 272     return c;
 273 }
 274
 275 trait_t* abc_class_slot(abc_class_t*cls, char*name, multiname_t*type)
 276 {
 277     abc_file_t*file = cls->file;
 278     multiname_t*m_name = multiname_fromstring(name);
 279     multiname_t*m_type = multiname_clone(type);
 280     trait_t*t = trait_new_member(m_type, m_name, 0);
 281     t->slot_id = list_length(cls->traits)+1;
 282     list_append(cls->traits, t);
 283     return t;
 284 }
 285
 286 trait_t* abc_class_find_slotid(abc_class_t*cls, int slotid)
 287 {
 288     trait_list_t*l;
 289     trait_t*t=0;
 290     for(l=cls->traits;l;l=l->next) {
 291         if(l->trait->slot_id==slotid) {
 292             t=l->trait;
 293             break;
 294         }
 295     }
 296     return t;
 297 }
 298
 299 void abc_method_body_addClassTrait(abc_method_body_t*code, char*multiname, int slotid, abc_class_t*cls)
 300 {
 301     abc_file_t*file = code->file;
 302     multiname_t*m = multiname_fromstring(multiname);
 303     trait_t*trait = trait_new(TRAIT_CLASS, m, slotid, 0, 0);
 304     trait->cls = cls;
 305     list_append(code->traits, trait);
 306 }
 307
 308 /* notice: traits of a method (body) belonging to an init script
 309    and traits of the init script are *not* the same thing */
 310 int abc_initscript_addClassTrait(abc_script_t*script, multiname_t*multiname, abc_class_t*cls)
 311 {
 312     abc_file_t*file = script->file;
 313     multiname_t*m = multiname_clone(multiname);
 314     int slotid = list_length(script->traits)+1;
 315     trait_t*trait = trait_new(TRAIT_CLASS, m, slotid, 0, 0);
 316     trait->cls = cls;
 317     list_append(script->traits, trait);
 318     return slotid;
 319 }
 320
 321 abc_script_t* abc_initscript(abc_file_t*file, multiname_t*returntype, int num_params, ...)
 322 {
 323     va_list va;
 324     va_start(va, num_params);
 325     abc_method_body_t* c = add_method(file, 0, returntype, num_params, va);
 326     abc_script_t* s = malloc(sizeof(abc_script_t));
 327     s->method = c->method;
 328     s->traits = list_new();
 329     s->file = file;
 330     array_append(file->scripts, NO_KEY, s);
 331     va_end(va);
 332     return s;
 333 }
 334
 335 static void traits_dump(FILE*fo, const char*prefix, trait_list_t*traits, abc_file_t*file);
 336
 337 static void dump_method(FILE*fo, const char*prefix, const char*type, const char*name, abc_method_t*m, abc_file_t*file)
 338 {
 339     char*return_type = 0;
 340     if(m->return_type)
 341         return_type = multiname_tostring(m->return_type);
 342     else
 343         return_type = strdup("void");
 344     char*paramstr = params_tostring(m->parameters);
 345     fprintf(fo, "%s%s %s %s=%s %s (%d params, %d optional)\n", prefix, type, return_type, name, m->name, paramstr,
 346             list_length(m->parameters),
 347             list_length(m->optional_parameters)
 348             );
 349     free(paramstr);paramstr=0;
 350     free(return_type);return_type=0;
 351
 352     abc_method_body_t*c = m->body;
 353     if(!c) {
 354         return;
 355     }
 356
 357     fprintf(fo, "%s[stack:%d locals:%d scope:%d-%d flags:",
 358             prefix, c->old.max_stack, c->old.local_count, c->old.init_scope_depth,
 359             c->old.max_scope_depth);
 360
 361
 362     int flags = c->method->flags;
 363     if(flags&METHOD_NEED_ARGUMENTS) {fprintf(fo, " need_arguments");flags&=~METHOD_NEED_ARGUMENTS;}
 364     if(flags&METHOD_NEED_ACTIVATION) {fprintf(fo, " need_activation");flags&=~METHOD_NEED_ACTIVATION;}
 365     if(flags&METHOD_NEED_REST) {fprintf(fo, " need_rest");flags&=~METHOD_NEED_REST;}
 366     if(flags&METHOD_HAS_OPTIONAL) {fprintf(fo, " has_optional");flags&=~METHOD_HAS_OPTIONAL;}
 367     if(flags&METHOD_SET_DXNS) {fprintf(fo, " set_dxns");flags&=~METHOD_SET_DXNS;}
 368     if(flags&METHOD_HAS_PARAM_NAMES) {fprintf(fo, " has_param_names");flags&=~METHOD_HAS_PARAM_NAMES;}
 369     if(flags) fprintf(fo, " %02x", flags);
 370     fprintf(fo, "]");
 371
 372     if(m->trait) {
 373         fprintf(fo, " slot:%d", m->trait->slot_id);
 374     }
 375     fprintf(fo, "\n");
 376
 377
 378     char prefix2[80];
 379     sprintf(prefix2, "%s    ", prefix);
 380     if(c->traits)
 381         traits_dump(fo, prefix, c->traits, file);
 382     fprintf(fo, "%s{\n", prefix);
 383     code_dump(c->code, c->exceptions, file, prefix2, fo);
 384     fprintf(fo, "%s}\n\n", prefix);
 385 }
 386
 387 static void traits_free(trait_list_t*traits)
 388 {
 389     trait_list_t*t = traits;
 390     while(t) {
 391         if(t->trait->name) {
 392             multiname_destroy(t->trait->name);t->trait->name = 0;
 393         }
 394         if(t->trait->kind == TRAIT_SLOT || t->trait->kind == TRAIT_CONST) {
 395             multiname_destroy(t->trait->type_name);
 396         }
 397         if(t->trait->value) {
 398             constant_free(t->trait->value);t->trait->value = 0;
 399         }
 400         free(t->trait);t->trait = 0;
 401         t = t->next;
 402     }
 403     list_free(traits);
 404 }
 405
 406 static char trait_is_method(trait_t*trait)
 407 {
 408     return (trait->kind == TRAIT_METHOD || trait->kind == TRAIT_GETTER ||
 409             trait->kind == TRAIT_SETTER || trait->kind == TRAIT_FUNCTION);
 410 }
 411
 412 static trait_list_t* traits_parse(TAG*tag, pool_t*pool, abc_file_t*file)
 413 {
 414     int num_traits = swf_GetU30(tag);
 415     trait_list_t*traits = list_new();
 416     int t;
 417     if(num_traits) {
 418         DEBUG printf("%d traits\n", num_traits);
 419     }
 420
 421     for(t=0;t<num_traits;t++) {
 422         NEW(trait_t,trait);
 423         list_append(traits, trait);
 424
 425         trait->name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag))); // always a QName (ns,name)
 426
 427         const char*name = 0;
 428         DEBUG name = multiname_tostring(trait->name);
 429         U8 kind = swf_GetU8(tag);
 430         U8 attributes = kind&0xf0;
 431         kind&=0x0f;
 432         trait->kind = kind;
 433         trait->attributes = attributes;
 434         DEBUG printf("  trait %d) %s type=%02x\n", t, name, kind);
 435         if(kind == TRAIT_METHOD || kind == TRAIT_GETTER || kind == TRAIT_SETTER) { // method / getter / setter
 436             trait->disp_id = swf_GetU30(tag);
 437             trait->method = (abc_method_t*)array_getvalue(file->methods, swf_GetU30(tag));
 438             trait->method->trait = trait;
 439             DEBUG printf("  method/getter/setter\n");
 440         } else if(kind == TRAIT_FUNCTION) { // function
 441             trait->slot_id =  swf_GetU30(tag);
 442             trait->method = (abc_method_t*)array_getvalue(file->methods, swf_GetU30(tag));
 443             trait->method->trait = trait;
 444         } else if(kind == TRAIT_CLASS) { // class
 445             trait->slot_id = swf_GetU30(tag);
 446             trait->cls = (abc_class_t*)array_getvalue(file->classes, swf_GetU30(tag));
 447             DEBUG printf("  class %s %d %d\n", name, trait->slot_id, trait->cls);
 448         } else if(kind == TRAIT_SLOT || kind == TRAIT_CONST) { // slot, const
 449             /* a slot is a variable in a class that is shared amonst all instances
 450                of the same type, but which has a unique location in each object
 451                (in other words, slots are non-static, traits are static)
 452              */
 453             trait->slot_id = swf_GetU30(tag);
 454             trait->type_name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
 455             int vindex = swf_GetU30(tag);
 456             if(vindex) {
 457                 int vkind = swf_GetU8(tag);
 458                 trait->value = constant_fromindex(pool, vindex, vkind);
 459             }
 460             DEBUG printf("  slot %s %d %s (%s)\n", name, trait->slot_id, trait->type_name->name, constant_tostring(trait->value));
 461         } else {
 462             fprintf(stderr, "Can't parse trait type %d\n", kind);
 463         }
 464         if(attributes&0x40) {
 465             int num = swf_GetU30(tag);
 466             int s;
 467             for(s=0;s<num;s++) {
 468                 swf_GetU30(tag); //index into metadata array
 469             }
 470         }
 471     }
 472     return traits;
 473 }
 474
 475 void traits_skip(TAG*tag)
 476 {
 477     int num_traits = swf_GetU30(tag);
 478     int t;
 479     for(t=0;t<num_traits;t++) {
 480         swf_GetU30(tag);
 481         U8 kind = swf_GetU8(tag);
 482         U8 attributes = kind&0xf0;
 483         kind&=0x0f;
 484         swf_GetU30(tag);
 485         swf_GetU30(tag);
 486         if(kind == TRAIT_SLOT || kind == TRAIT_CONST) {
 487             if(swf_GetU30(tag)) swf_GetU8(tag);
 488         } else if(kind>TRAIT_CONST) {
 489             fprintf(stderr, "Can't parse trait type %d\n", kind);
 490         }
 491         if(attributes&0x40) {
 492             int s, num = swf_GetU30(tag);
 493             for(s=0;s<num;s++) swf_GetU30(tag);
 494         }
 495     }
 496 }
 497
 498
 499 static void traits_write(pool_t*pool, TAG*tag, trait_list_t*traits)
 500 {
 501     if(!traits) {
 502         swf_SetU30(tag, 0);
 503         return;
 504     }
 505     swf_SetU30(tag, list_length(traits));
 506     int s;
 507
 508     while(traits) {
 509         trait_t*trait = traits->trait;
 510
 511         swf_SetU30(tag, pool_register_multiname(pool, trait->name));
 512         swf_SetU8(tag, trait->kind|trait->attributes);
 513
 514         swf_SetU30(tag, trait->data1);
 515
 516         if(trait->kind == TRAIT_CLASS) {
 517             swf_SetU30(tag, trait->cls->index);
 518         } else if(trait->kind == TRAIT_GETTER ||
 519                   trait->kind == TRAIT_SETTER ||
 520                   trait->kind == TRAIT_METHOD) {
 521             swf_SetU30(tag, trait->method->index);
 522         } else if(trait->kind == TRAIT_SLOT ||
 523                   trait->kind == TRAIT_CONST) {
 524             int index = pool_register_multiname(pool, trait->type_name);
 525             swf_SetU30(tag, index);
 526         } else  {
 527             swf_SetU30(tag, trait->data2);
 528         }
 529
 530         if(trait->kind == TRAIT_SLOT || trait->kind == TRAIT_CONST) {
 531             int vindex = constant_get_index(pool, trait->value);
 532             swf_SetU30(tag, vindex);
 533             if(vindex) {
 534                 swf_SetU8(tag, trait->value->type);
 535             }
 536         }
 537         if(trait->attributes&0x40) {
 538             // metadata
 539             swf_SetU30(tag, 0);
 540         }
 541         traits = traits->next;
 542     }
 543 }
 544
 545
 546 static void traits_dump(FILE*fo, const char*prefix, trait_list_t*traits, abc_file_t*file)
 547 {
 548     int t;
 549     while(traits) {
 550         trait_t*trait = traits->trait;
 551         char*name = multiname_tostring(trait->name);
 552         U8 kind = trait->kind;
 553         U8 attributes = trait->attributes;
 554         if(kind == TRAIT_METHOD) {
 555             abc_method_t*m = trait->method;
 556             dump_method(fo, prefix, "method", name, m, file);
 557         } else if(kind == TRAIT_GETTER) {
 558             abc_method_t*m = trait->method;
 559             dump_method(fo, prefix, "getter", name, m, file);
 560         } else if(kind == TRAIT_SETTER) {
 561             abc_method_t*m = trait->method;
 562             dump_method(fo, prefix, "setter", name, m, file);
 563         } else if(kind == TRAIT_FUNCTION) { // function
 564             abc_method_t*m = trait->method;
 565             dump_method(fo, prefix, "function", name, m, file);
 566         } else if(kind == TRAIT_CLASS) { // class
 567             abc_class_t*cls = trait->cls;
 568             if(!cls) {
 569                 fprintf(fo, "%sslot %d: class %s=00000000\n", prefix, trait->slot_id, name);
 570             } else {
 571                 fprintf(fo, "%sslot %d: class %s=%s\n", prefix, trait->slot_id, name, cls->classname->name);
 572             }
 573         } else if(kind == TRAIT_SLOT || kind == TRAIT_CONST) { // slot, const
 574             int slot_id = trait->slot_id;
 575             char*type_name = multiname_tostring(trait->type_name);
 576             char*value = constant_tostring(trait->value);
 577             fprintf(fo, "%sslot %d: %s%s %s %s %s\n", prefix, trait->slot_id,
 578                     kind==TRAIT_CONST?"const ":"", type_name, name,
 579                     value?"=":"", value);
 580             if(value) free(value);
 581             free(type_name);
 582         } else {
 583             fprintf(fo, "%s    can't dump trait type %d\n", prefix, kind);
 584         }
 585         free(name);
 586         traits=traits->next;
 587     }
 588 }
 589
 590 void* swf_DumpABC(FILE*fo, void*code, char*prefix)
 591 {
 592     abc_file_t* file = (abc_file_t*)code;
 593
 594     if(file->name) {
 595         fprintf(fo, "%s#\n", prefix);
 596         fprintf(fo, "%s#name: %s\n", prefix, file->name);
 597         fprintf(fo, "%s#\n", prefix);
 598     }
 599
 600     int t;
 601     for(t=0;t<file->metadata->num;t++) {
 602         const char*entry_name = array_getkey(file->metadata, t);
 603         fprintf(fo, "%s#Metadata \"%s\":\n", prefix, entry_name);
 604         int s;
 605         array_t*items = (array_t*)array_getvalue(file->metadata, t);
 606         for(s=0;s<items->num;s++) {
 607             fprintf(fo, "%s#  %s=%s\n", prefix, array_getkey(items, s), array_getvalue(items,s));
 608         }
 609         fprintf(fo, "%s#\n", prefix);
 610     }
 611
 612     for(t=0;t<file->classes->num;t++) {
 613         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 614         char prefix2[80];
 615         sprintf(prefix2, "%s    ", prefix);
 616
 617         fprintf(fo, "%s", prefix);
 618         if(cls->flags&1) fprintf(fo, "sealed ");
 619         if(cls->flags&2) fprintf(fo, "final ");
 620         if(cls->flags&4) fprintf(fo, "interface ");
 621         if(cls->flags&8) {
 622             char*s = namespace_tostring(cls->protectedNS);
 623             fprintf(fo, "protectedNS(%s) ", s);
 624             free(s);
 625         }
 626
 627         char*classname = multiname_tostring(cls->classname);
 628         fprintf(fo, "class %s", classname);
 629         free(classname);
 630         if(cls->superclass) {
 631             char*supername = multiname_tostring(cls->superclass);
 632             fprintf(fo, " extends %s", supername);
 633             free(supername);
 634             multiname_list_t*ilist = cls->interfaces;
 635             if(ilist)
 636                 fprintf(fo, " implements");
 637             while(ilist) {
 638                 char*s = multiname_tostring(ilist->multiname);
 639                 fprintf(fo, " %s", s);
 640                 free(s);
 641                 ilist = ilist->next;
 642             }
 643             ilist->next;
 644         }
 645         if(cls->flags&0xf0)
 646             fprintf(fo, "extra flags=%02x\n", cls->flags&0xf0);
 647         fprintf(fo, "%s{\n", prefix);
 648
 649         if(cls->static_constructor)
 650             dump_method(fo, prefix2,"staticconstructor", "", cls->static_constructor, file);
 651         traits_dump(fo, prefix2, cls->static_traits, file);
 652
 653         char*n = multiname_tostring(cls->classname);
 654         if(cls->constructor)
 655             dump_method(fo, prefix2, "constructor", n, cls->constructor, file);
 656         free(n);
 657         traits_dump(fo, prefix2,cls->traits, file);
 658         fprintf(fo, "%s}\n", prefix);
 659
 660     }
 661     fprintf(fo, "%s\n", prefix);
 662
 663     for(t=0;t<file->scripts->num;t++) {
 664         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
 665         dump_method(fo, prefix,"initmethod", "init", s->method, file);
 666         traits_dump(fo, prefix, s->traits, file);
 667     }
 668     return file;
 669 }
 670
 671 void* swf_ReadABC(TAG*tag)
 672 {
 673     abc_file_t* file = abc_file_new();
 674     pool_t*pool = pool_new();
 675
 676     swf_SetTagPos(tag, 0);
 677     int t;
 678     if(tag->id == ST_DOABC) {
 679         U32 abcflags = swf_GetU32(tag);
 680         DEBUG printf("flags=%08x\n", abcflags);
 681         char*name= swf_GetString(tag);
 682         file->name = (name&&name[0])?strdup(name):0;
 683     }
 684     U32 version = swf_GetU32(tag);
 685     if(version!=0x002e0010) {
 686         fprintf(stderr, "Warning: unknown AVM2 version %08x\n", version);
 687     }
 688
 689     pool_read(pool, tag);
 690
 691     int num_methods = swf_GetU30(tag);
 692     DEBUG printf("%d methods\n", num_methods);
 693     for(t=0;t<num_methods;t++) {
 694         NEW(abc_method_t,m);
 695         int param_count = swf_GetU30(tag);
 696         int return_type_index = swf_GetU30(tag);
 697         if(return_type_index)
 698             m->return_type = multiname_clone(pool_lookup_multiname(pool, return_type_index));
 699         else
 700             m->return_type = 0;
 701
 702         int s;
 703         for(s=0;s<param_count;s++) {
 704             int type_index = swf_GetU30(tag);
 705
 706             /* type_index might be 0, which probably means "..." (varargs) */
 707             multiname_t*param = type_index?multiname_clone(pool_lookup_multiname(pool, type_index)):0;
 708             list_append(m->parameters, param);
 709         }
 710
 711         int namenr = swf_GetU30(tag);
 712         if(namenr)
 713             m->name = strdup(pool_lookup_string(pool, namenr));
 714         else
 715             m->name = strdup("");
 716
 717         m->flags = swf_GetU8(tag);
 718
 719         DEBUG printf("method %d) %s %s flags=%02x\n", t, m->name, params_tostring(m->parameters), m->flags);
 720
 721         if(m->flags&0x08) {
 722             m->optional_parameters = list_new();
 723             int num = swf_GetU30(tag);
 724             int s;
 725             for(s=0;s<num;s++) {
 726                 int vindex = swf_GetU30(tag);
 727                 U8 vkind = swf_GetU8(tag); // specifies index type for "val"
 728                 constant_t*c = constant_fromindex(pool, vindex, vkind);
 729                 list_append(m->optional_parameters, c);
 730             }
 731         }
 732         if(m->flags&0x80) {
 733             /* debug information- not used by avm2 */
 734             multiname_list_t*l = m->parameters;
 735             while(l) {
 736                 const char*name = pool_lookup_string(pool, swf_GetU30(tag));
 737                 l = l->next;
 738             }
 739         }
 740         m->index = array_length(file->methods);
 741         array_append(file->methods, NO_KEY, m);
 742     }
 743
 744     parse_metadata(tag, file, pool);
 745
 746     /* skip classes, and scripts for now, and do the real parsing later */
 747     int num_classes = swf_GetU30(tag);
 748     int classes_pos = tag->pos;
 749     DEBUG printf("%d classes\n", num_classes);
 750     for(t=0;t<num_classes;t++) {
 751         abc_class_t*cls = malloc(sizeof(abc_class_t));
 752         memset(cls, 0, sizeof(abc_class_t));
 753
 754         swf_GetU30(tag); //classname
 755         swf_GetU30(tag); //supername
 756
 757         array_append(file->classes, NO_KEY, cls);
 758
 759         cls->flags = swf_GetU8(tag);
 760         DEBUG printf("class %d %02x\n", t, cls->flags);
 761         if(cls->flags&8)
 762             swf_GetU30(tag); //protectedNS
 763         int s;
 764         int inum = swf_GetU30(tag); //interface count
 765         cls->interfaces = 0;
 766         for(s=0;s<inum;s++) {
 767             int interface_index = swf_GetU30(tag);
 768             multiname_t* m = multiname_clone(pool_lookup_multiname(pool, interface_index));
 769             list_append(cls->interfaces, m);
 770             DEBUG printf("  class %d interface: %s\n", t, m->name);
 771         }
 772
 773         int iinit = swf_GetU30(tag); //iinit
 774         DEBUG printf("--iinit-->%d\n", iinit);
 775         traits_skip(tag);
 776     }
 777     for(t=0;t<num_classes;t++) {
 778         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 779         int cinit = swf_GetU30(tag);
 780         DEBUG printf("--cinit(%d)-->%d\n", t, cinit);
 781         cls->static_constructor = (abc_method_t*)array_getvalue(file->methods, cinit);
 782         traits_skip(tag);
 783     }
 784     int num_scripts = swf_GetU30(tag);
 785     DEBUG printf("%d scripts\n", num_scripts);
 786     for(t=0;t<num_scripts;t++) {
 787         int init = swf_GetU30(tag);
 788         traits_skip(tag);
 789     }
 790
 791     int num_method_bodies = swf_GetU30(tag);
 792     DEBUG printf("%d method bodies\n", num_method_bodies);
 793     for(t=0;t<num_method_bodies;t++) {
 794         int methodnr = swf_GetU30(tag);
 795         if(methodnr >= file->methods->num) {
 796             printf("Invalid method number: %d\n", methodnr);
 797             return 0;
 798         }
 799         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, methodnr);
 800         abc_method_body_t*c = malloc(sizeof(abc_method_body_t));
 801         memset(c, 0, sizeof(abc_method_body_t));
 802         c->old.max_stack = swf_GetU30(tag);
 803         c->old.local_count = swf_GetU30(tag);
 804         c->old.init_scope_depth = swf_GetU30(tag);
 805         c->old.max_scope_depth = swf_GetU30(tag);
 806
 807         c->init_scope_depth = c->old.init_scope_depth;
 808         int code_length = swf_GetU30(tag);
 809
 810         c->method = m;
 811         m->body = c;
 812
 813         int pos = tag->pos + code_length;
 814         codelookup_t*codelookup = 0;
 815         c->code = code_parse(tag, code_length, file, pool, &codelookup);
 816         tag->pos = pos;
 817
 818         int exception_count = swf_GetU30(tag);
 819         int s;
 820         c->exceptions = list_new();
 821         for(s=0;s<exception_count;s++) {
 822             abc_exception_t*e = malloc(sizeof(abc_exception_t));
 823
 824             e->from = code_atposition(codelookup, swf_GetU30(tag));
 825             e->to = code_atposition(codelookup, swf_GetU30(tag));
 826             e->target = code_atposition(codelookup, swf_GetU30(tag));
 827
 828             e->exc_type = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
 829             e->var_name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
 830             //e->var_name = pool_lookup_string(pool, swf_GetU30(tag));
 831             //if(e->var_name) e->var_name = strdup(e->var_name);
 832             list_append(c->exceptions, e);
 833         }
 834         codelookup_free(codelookup);
 835         c->traits = traits_parse(tag, pool, file);
 836
 837         DEBUG printf("method_body %d) (method %d), %d bytes of code\n", t, methodnr, code_length);
 838
 839         array_append(file->method_bodies, NO_KEY, c);
 840     }
 841     if(tag->len - tag->pos) {
 842         fprintf(stderr, "%d unparsed bytes remaining in ABC block\n", tag->len - tag->pos);
 843         return 0;
 844     }
 845
 846     swf_SetTagPos(tag, classes_pos);
 847     for(t=0;t<num_classes;t++) {
 848         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 849
 850         int classname_index = swf_GetU30(tag);
 851         int superclass_index = swf_GetU30(tag);
 852         cls->classname = multiname_clone(pool_lookup_multiname(pool, classname_index));
 853         cls->superclass = multiname_clone(pool_lookup_multiname(pool, superclass_index));
 854         cls->flags = swf_GetU8(tag);
 855         const char*ns = "";
 856         if(cls->flags&8) {
 857             int ns_index = swf_GetU30(tag);
 858             cls->protectedNS = namespace_clone(pool_lookup_namespace(pool, ns_index));
 859         }
 860
 861         int num_interfaces = swf_GetU30(tag); //interface count
 862         int s;
 863         for(s=0;s<num_interfaces;s++) {
 864             swf_GetU30(tag);
 865         }
 866         int iinit = swf_GetU30(tag);
 867         cls->constructor = (abc_method_t*)array_getvalue(file->methods, iinit);
 868         cls->traits = traits_parse(tag, pool, file);
 869     }
 870     for(t=0;t<num_classes;t++) {
 871         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 872         /* SKIP */
 873         swf_GetU30(tag); // cindex
 874         cls->static_traits = traits_parse(tag, pool, file);
 875     }
 876     int num_scripts2 = swf_GetU30(tag);
 877     for(t=0;t<num_scripts2;t++) {
 878         int init = swf_GetU30(tag);
 879         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, init);
 880
 881         abc_script_t*s = malloc(sizeof(abc_script_t));
 882         memset(s, 0, sizeof(abc_script_t));
 883         s->method = m;
 884         s->traits = traits_parse(tag, pool, file);
 885         array_append(file->scripts, NO_KEY, s);
 886     }
 887
 888     pool_destroy(pool);
 889     return file;
 890 }
 891
 892 void swf_WriteABC(TAG*abctag, void*code)
 893 {
 894     abc_file_t*file = (abc_file_t*)code;
 895     pool_t*pool = pool_new();
 896
 897     TAG*tmp = swf_InsertTag(0,0);
 898     TAG*tag = tmp;
 899     int t;
 900
 901     /* add method bodies where needed */
 902     for(t=0;t<file->classes->num;t++) {
 903         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
 904         if(!c->constructor) {
 905             if(!(c->flags&CLASS_INTERFACE)) {
 906                 NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
 907                 NEW(abc_method_body_t,body);array_append(file->method_bodies, NO_KEY, body);
 908                 // don't bother to set m->index
 909                 body->method = m; m->body = body;
 910                 __ returnvoid(body);
 911                 c->constructor = m;
 912             } else {
 913                 NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
 914                 c->constructor = m;
 915             }
 916         }
 917         if(!c->static_constructor) {
 918             NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
 919             NEW(abc_method_body_t,body);array_append(file->method_bodies, NO_KEY, body);
 920             body->method = m; m->body = body;
 921             __ returnvoid(body);
 922             c->static_constructor = m;
 923         }
 924     }
 925
 926
 927     swf_SetU30(tag, file->methods->num);
 928     /* enumerate classes, methods and method bodies */
 929     for(t=0;t<file->methods->num;t++) {
 930         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
 931         m->index = t;
 932     }
 933     for(t=0;t<file->classes->num;t++) {
 934         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
 935         c->index = t;
 936     }
 937     for(t=0;t<file->method_bodies->num;t++) {
 938         abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
 939         m->index = t;
 940     }
 941
 942     /* generate code statistics */
 943     for(t=0;t<file->method_bodies->num;t++) {
 944         abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
 945         m->stats = code_get_statistics(m->code, m->exceptions);
 946     }
 947
 948     /* level init scope depths: The init scope depth of a method is
 949        always as least as high as the init scope depth of it's surrounding
 950        class.
 951        A method has it's own init_scope_depth if it's an init method
 952        (then its init scope depth is zero), or if it's used as a closure.
 953
 954        Not sure yet what to do with methods which are used at different
 955        locations- e.g. the nullmethod is used all over the place.
 956        EDIT: flashplayer doesn't allow this anyway- a method can only
 957              be used once
 958
 959        Also, I have the strong suspicion that flash player uses only
 960        the difference between max_scope_stack and init_scope_stack, anyway.
 961      */
 962     for(t=0;t<file->classes->num;t++) {
 963         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
 964         trait_list_t*traits = c->traits;
 965         if(c->constructor && c->constructor->body &&
 966            c->constructor->body->init_scope_depth < c->init_scope_depth) {
 967            c->constructor->body->init_scope_depth = c->init_scope_depth;
 968         }
 969         if(c->static_constructor && c->static_constructor->body &&
 970            c->static_constructor->body->init_scope_depth < c->init_scope_depth) {
 971            c->static_constructor->body->init_scope_depth = c->init_scope_depth;
 972         }
 973         while(traits) {
 974             trait_t*trait = traits->trait;
 975             if(trait_is_method(trait) && trait->method->body) {
 976                 abc_method_body_t*body = trait->method->body;
 977                 if(body->init_scope_depth < c->init_scope_depth) {
 978                    body->init_scope_depth = c->init_scope_depth;
 979                 }
 980             }
 981             traits = traits->next;
 982         }
 983     }
 984
 985     for(t=0;t<file->methods->num;t++) {
 986         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
 987         int n = 0;
 988         multiname_list_t*l = m->parameters;
 989         int num_params = list_length(m->parameters);
 990         swf_SetU30(tag, num_params);
 991         if(m->return_type)
 992             swf_SetU30(tag, pool_register_multiname(pool, m->return_type));
 993         else
 994             swf_SetU30(tag, 0);
 995         int s;
 996         while(l) {
 997             swf_SetU30(tag, pool_register_multiname(pool, l->multiname));
 998             l = l->next;
 999         }
1000         if(m->name) {
1001             swf_SetU30(tag, pool_register_string(pool, m->name));
1002         } else {
1003             swf_SetU30(tag, 0);
1004         }
1005
1006         U8 flags = m->flags&(METHOD_NEED_REST|METHOD_NEED_ARGUMENTS);
1007         if(m->optional_parameters)
1008             flags |= METHOD_HAS_OPTIONAL;
1009         if(m->body) {
1010             flags |= m->body->stats->flags;
1011         }
1012
1013         swf_SetU8(tag, flags);
1014         if(flags&METHOD_HAS_OPTIONAL) {
1015             swf_SetU30(tag, list_length(m->optional_parameters));
1016             constant_list_t*l = m->optional_parameters;
1017             while(l) {
1018                 swf_SetU30(tag, constant_get_index(pool, l->constant));
1019                 swf_SetU8(tag, l->constant->type);
1020                 l = l->next;
1021             }
1022         }
1023     }
1024
1025     /* write metadata */
1026     swf_SetU30(tag, file->metadata->num);
1027     for(t=0;t<file->metadata->num;t++) {
1028         const char*entry_name = array_getkey(file->metadata, t);
1029         swf_SetU30(tag, pool_register_string(pool, entry_name));
1030         array_t*items = (array_t*)array_getvalue(file->metadata, t);
1031         swf_SetU30(tag, items->num);
1032         int s;
1033         for(s=0;s<items->num;s++) {
1034             int i1 = pool_register_string(pool, array_getkey(items, s));
1035             int i2 = pool_register_string(pool, array_getvalue(items, s));
1036             swf_SetU30(tag, i1);
1037             swf_SetU30(tag, i2);
1038         }
1039     }
1040
1041     swf_SetU30(tag, file->classes->num);
1042     for(t=0;t<file->classes->num;t++) {
1043         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1044
1045         int classname_index = pool_register_multiname(pool, c->classname);
1046         int superclass_index = pool_register_multiname(pool, c->superclass);
1047
1048         swf_SetU30(tag, classname_index);
1049         swf_SetU30(tag, superclass_index);
1050
1051         swf_SetU8(tag, c->flags); // flags
1052         if(c->flags&0x08) {
1053             int ns_index = pool_register_namespace(pool, c->protectedNS);
1054             swf_SetU30(tag, ns_index);
1055         }
1056
1057         swf_SetU30(tag, list_length(c->interfaces));
1058         multiname_list_t*interface= c->interfaces;
1059         while(interface) {
1060             swf_SetU30(tag, pool_register_multiname(pool, interface->multiname));
1061             interface = interface->next;
1062         }
1063
1064         assert(c->constructor);
1065         swf_SetU30(tag, c->constructor->index);
1066
1067         traits_write(pool, tag, c->traits);
1068     }
1069     for(t=0;t<file->classes->num;t++) {
1070         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1071         assert(c->static_constructor);
1072         swf_SetU30(tag, c->static_constructor->index);
1073
1074         traits_write(pool, tag, c->static_traits);
1075     }
1076
1077     swf_SetU30(tag, file->scripts->num);
1078     for(t=0;t<file->scripts->num;t++) {
1079         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
1080         swf_SetU30(tag, s->method->index); //!=t!
1081         traits_write(pool, tag, s->traits);
1082     }
1083
1084     swf_SetU30(tag, file->method_bodies->num);
1085     for(t=0;t<file->method_bodies->num;t++) {
1086         abc_method_body_t*c = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1087         abc_method_t*m = c->method;
1088         swf_SetU30(tag, m->index);
1089
1090         //swf_SetU30(tag, c->old.max_stack);
1091         //swf_SetU30(tag, c->old.local_count);
1092         //swf_SetU30(tag, c->old.init_scope_depth);
1093         //swf_SetU30(tag, c->old.max_scope_depth);
1094
1095         swf_SetU30(tag, c->stats->max_stack);
1096
1097         int param_num = list_length(c->method->parameters)+1;
1098         if(c->method->flags&METHOD_NEED_REST)
1099             param_num++;
1100         if(param_num <= c->stats->local_count)
1101             swf_SetU30(tag, c->stats->local_count);
1102         else
1103             swf_SetU30(tag, param_num);
1104
1105         swf_SetU30(tag, c->init_scope_depth);
1106         swf_SetU30(tag, c->stats->max_scope_depth+
1107                         c->init_scope_depth);
1108
1109         code_write(tag, c->code, pool, file);
1110
1111         swf_SetU30(tag, list_length(c->exceptions));
1112         abc_exception_list_t*l = c->exceptions;
1113         while(l) {
1114             // warning: assumes "pos" in each code_t is up-to-date
1115             swf_SetU30(tag, l->abc_exception->from->pos);
1116             swf_SetU30(tag, l->abc_exception->to->pos);
1117             swf_SetU30(tag, l->abc_exception->target->pos);
1118             swf_SetU30(tag, pool_register_multiname(pool, l->abc_exception->exc_type));
1119             swf_SetU30(tag, pool_register_multiname(pool, l->abc_exception->var_name));
1120             l = l->next;
1121         }
1122
1123         traits_write(pool, tag, c->traits);
1124     }
1125
1126     /* free temporary codestat data again. Notice: If we were to write this
1127        file multiple times, this can also be shifted to abc_file_free() */
1128     for(t=0;t<file->method_bodies->num;t++) {
1129         abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1130         codestats_free(m->stats);m->stats=0;
1131     }
1132
1133     // --- start to write real tag --
1134
1135     tag = abctag;
1136
1137     if(tag->id == ST_DOABC) {
1138         swf_SetU32(tag, file->flags); // flags
1139         swf_SetString(tag, file->name);
1140     }
1141
1142     swf_SetU16(tag, 0x10); //version
1143     swf_SetU16(tag, 0x2e);
1144
1145     pool_write(pool, tag);
1146
1147     swf_SetBlock(tag, tmp->data, tmp->len);
1148
1149     swf_DeleteTag(0, tmp);
1150     pool_destroy(pool);
1151 }
1152
1153 void abc_file_free(abc_file_t*file)
1154 {
1155     int t;
1156     if(file->metadata) {
1157         for(t=0;t<file->metadata->num;t++) {
1158             array_t*items = (array_t*)array_getvalue(file->metadata, t);
1159             int s;
1160             for(s=0;s<items->num;s++) {
1161                 free(array_getvalue(items, s));
1162             }
1163             array_free(items);
1164         }
1165         array_free(file->metadata);file->metadata=0;
1166     }
1167
1168     for(t=0;t<file->methods->num;t++) {
1169         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
1170
1171         multiname_list_t*param = m->parameters;
1172         while(param) {
1173             multiname_destroy(param->multiname);param->multiname=0;
1174             param = param->next;
1175         }
1176         list_free(m->parameters);m->parameters=0;
1177
1178         constant_list_t*opt = m->optional_parameters;
1179         while(opt) {
1180             constant_free(opt->constant);opt->constant=0;
1181             opt = opt->next;
1182         }
1183         list_free(m->optional_parameters);m->optional_parameters=0;
1184
1185         if(m->name) {
1186             free((void*)m->name);m->name=0;
1187         }
1188         if(m->return_type) {
1189             multiname_destroy(m->return_type);
1190         }
1191         free(m);
1192     }
1193     array_free(file->methods);file->methods=0;
1194
1195     for(t=0;t<file->classes->num;t++) {
1196         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
1197         traits_free(cls->traits);cls->traits=0;
1198         traits_free(cls->static_traits);cls->static_traits=0;
1199
1200         if(cls->classname) {
1201             multiname_destroy(cls->classname);
1202         }
1203         if(cls->superclass) {
1204             multiname_destroy(cls->superclass);
1205         }
1206
1207         multiname_list_t*i = cls->interfaces;
1208         while(i) {
1209             multiname_destroy(i->multiname);i->multiname=0;
1210             i = i->next;
1211         }
1212         list_free(cls->interfaces);cls->interfaces=0;
1213
1214         if(cls->protectedNS) {
1215             namespace_destroy(cls->protectedNS);
1216         }
1217         free(cls);
1218     }
1219     array_free(file->classes);file->classes=0;
1220
1221     for(t=0;t<file->scripts->num;t++) {
1222         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
1223         traits_free(s->traits);s->traits=0;
1224         free(s);
1225     }
1226     array_free(file->scripts);file->scripts=0;
1227
1228     for(t=0;t<file->method_bodies->num;t++) {
1229         abc_method_body_t*body = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1230         code_free(body->code);body->code=0;
1231         traits_free(body->traits);body->traits=0;
1232
1233         abc_exception_list_t*ee = body->exceptions;
1234         while(ee) {
1235             abc_exception_t*e=ee->abc_exception;ee->abc_exception=0;
1236             e->from = e->to = e->target = 0;
1237             multiname_destroy(e->exc_type);e->exc_type=0;
1238             multiname_destroy(e->var_name);e->var_name=0;
1239             free(e);
1240             ee=ee->next;
1241         }
1242         list_free(body->exceptions);body->exceptions=0;
1243
1244         free(body);
1245     }
1246     array_free(file->method_bodies);file->method_bodies=0;
1247
1248     if(file->name) {
1249         free((void*)file->name);file->name=0;
1250     }
1251
1252     free(file);
1253 }
1254
1255 void swf_FreeABC(void*code)
1256 {
1257     abc_file_t*file= (abc_file_t*)code;
1258     abc_file_free(file);
1259 }
1260
1261 void swf_AddButtonLinks(SWF*swf, char stop_each_frame, char events)
1262 {
1263     int num_frames = 0;
1264     int has_buttons = 0;
1265     TAG*tag=swf->firstTag;
1266     while(tag) {
1267         if(tag->id == ST_SHOWFRAME)
1268             num_frames++;
1269         if(tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2)
1270             has_buttons = 1;
1271         tag = tag->next;
1272     }
1273
1274     abc_file_t*file = abc_file_new();
1275     abc_method_body_t*c = 0;
1276
1277     abc_class_t*cls = abc_class_new2(file, "rfx::MainTimeline", "flash.display::MovieClip");
1278     abc_class_protectedNS(cls, "rfx:MainTimeline");
1279
1280     TAG*abctag = swf_InsertTagBefore(swf, swf->firstTag, ST_DOABC);
1281
1282     tag = swf_InsertTag(abctag, ST_SYMBOLCLASS);
1283     swf_SetU16(tag, 1);
1284     swf_SetU16(tag, 0);
1285     swf_SetString(tag, "rfx.MainTimeline");
1286
1287     c = abc_class_staticconstructor(cls, 0, 0);
1288     c->old.max_stack = 1;
1289     c->old.local_count = 1;
1290     c->old.init_scope_depth = 9;
1291     c->old.max_scope_depth = 10;
1292
1293     __ getlocal_0(c);
1294     __ pushscope(c);
1295     __ returnvoid(c);
1296
1297     c = abc_class_constructor(cls, 0, 0);
1298     c->old.max_stack = 3;
1299     c->old.local_count = 1;
1300     c->old.init_scope_depth = 10;
1301     c->old.max_scope_depth = 11;
1302
1303     debugfile(c, "constructor.as");
1304
1305     __ getlocal_0(c);
1306     __ pushscope(c);
1307
1308     __ getlocal_0(c);
1309     __ constructsuper(c,0);
1310
1311     __ getlex(c, "[package]flash.system::Security");
1312     __ pushstring(c, "*");
1313     __ callpropvoid(c, "[package]::allowDomain", 1);
1314
1315     if(stop_each_frame || has_buttons) {
1316         int frame = 0;
1317         tag = swf->firstTag;
1318         abc_method_body_t*f = 0; //frame script
1319         while(tag && tag->id!=ST_END) {
1320             char framename[80];
1321             char needs_framescript=0;
1322             char buttonname[80];
1323             char functionname[80];
1324             sprintf(framename, "[packageinternal]rfx::frame%d", frame);
1325
1326             if(!f && (tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2 || stop_each_frame)) {
1327                 /* make the contructor add a frame script */
1328                 __ findpropstrict(c,"[package]::addFrameScript");
1329                 __ pushbyte(c,frame);
1330                 __ getlex(c,framename);
1331                 __ callpropvoid(c,"[package]::addFrameScript",2);
1332
1333                 f = abc_class_method(cls, 0, framename, 0);
1334                 f->old.max_stack = 3;
1335                 f->old.local_count = 1;
1336                 f->old.init_scope_depth = 10;
1337                 f->old.max_scope_depth = 11;
1338                 __ debugfile(f, "framescript.as");
1339                 __ debugline(f, 1);
1340                 __ getlocal_0(f);
1341                 __ pushscope(f);
1342                 if(stop_each_frame) {
1343                     __ findpropstrict(f, "[package]::stop");
1344                     __ callpropvoid(f, "[package]::stop", 0);
1345                 }
1346             }
1347
1348             if(tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2) {
1349                 U16 id = swf_GetDefineID(tag);
1350                 sprintf(buttonname, "::button%d", swf_GetDefineID(tag));
1351                 __ getlex(f,buttonname);
1352                 __ getlex(f,"flash.events::MouseEvent");
1353                 __ getproperty(f, "::CLICK");
1354                 sprintf(functionname, "::clickbutton%d", swf_GetDefineID(tag));
1355                 __ getlex(f,functionname);
1356                 __ callpropvoid(f, "::addEventListener" ,2);
1357
1358                 needs_framescript = 1;
1359
1360                 abc_method_body_t*h =
1361                     abc_class_method(cls, 0, functionname, 1, "flash.events::MouseEvent");
1362                 h->old.max_stack = 6;
1363                 h->old.local_count = 2;
1364                 h->old.init_scope_depth = 10;
1365                 h->old.max_scope_depth = 11;
1366                 __ getlocal_0(h);
1367                 __ pushscope(h);
1368
1369                 ActionTAG*oldaction = swf_ButtonGetAction(tag);
1370                 if(oldaction && oldaction->op == ACTION__GOTOFRAME) {
1371                     int framenr = GET16(oldaction->data);
1372                     if(framenr>254) {
1373                         fprintf(stderr, "Warning: Couldn't translate jump to frame %d to flash 9 actionscript\n", framenr);
1374                     }
1375                     if(!events) {
1376                         __ findpropstrict(h,"[package]::gotoAndStop");
1377                         __ pushbyte(h,framenr+1);
1378                         __ callpropvoid(h,"[package]::gotoAndStop", 1);
1379                     } else {
1380                         char framename[80];
1381                         sprintf(framename, "frame%d", framenr);
1382                         __ getlocal_0(h); //this
1383                         __ findpropstrict(h, "[package]flash.events::TextEvent");
1384                         __ pushstring(h, "link");
1385                         __ pushtrue(h);
1386                         __ pushtrue(h);
1387                         __ pushstring(h, framename);
1388                         __ constructprop(h,"[package]flash.events::TextEvent", 4);
1389                         __ callpropvoid(h,"[package]::dispatchEvent", 1);
1390                     }
1391                 } else if(oldaction && oldaction->op == ACTION__GETURL) {
1392                     if(!events) {
1393                         __ findpropstrict(h,"flash.net::navigateToURL");
1394                         __ findpropstrict(h,"flash.net::URLRequest");
1395                         // TODO: target _blank
1396                         __ pushstring(h,oldaction->data); //url
1397                         __ constructprop(h,"flash.net::URLRequest", 1);
1398                         __ callpropvoid(h,"flash.net::navigateToURL", 1);
1399                     } else {
1400                         __ getlocal_0(h); //this
1401                         __ findpropstrict(h, "[package]flash.events::TextEvent");
1402                         __ pushstring(h, "link");
1403                         __ pushtrue(h);
1404                         __ pushtrue(h);
1405                         __ pushstring(h,oldaction->data); //url
1406                         __ constructprop(h,"[package]flash.events::TextEvent", 4);
1407                         __ callpropvoid(h,"[package]::dispatchEvent", 1);
1408                     }
1409                 } else if(oldaction) {
1410                     fprintf(stderr, "Warning: Couldn't translate button code of button %d to flash 9 abc action\n", id);
1411                 }
1412                 __ returnvoid(h);
1413                 swf_ActionFree(oldaction);
1414             }
1415             if(tag->id == ST_SHOWFRAME) {
1416                 if(f) {
1417                     __ returnvoid(f);
1418                     f = 0;
1419                 }
1420                 frame++;
1421             }
1422             tag = tag->next;
1423         }
1424         if(f) {
1425             __ returnvoid(f);
1426         }
1427     }
1428     __ returnvoid(c);
1429
1430     tag = swf->firstTag;
1431     while(tag) {
1432         if(tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2) {
1433             char buttonname[80];
1434             sprintf(buttonname, "::button%d", swf_GetDefineID(tag));
1435             multiname_t*s = multiname_fromstring(buttonname);
1436             abc_class_slot(cls, buttonname, s);
1437         }
1438         tag = tag->next;
1439     }
1440
1441
1442     abc_script_t*s = abc_initscript(file, 0, 0);
1443     c = s->method->body;
1444     c->old.max_stack = 2;
1445     c->old.local_count = 1;
1446     c->old.init_scope_depth = 1;
1447     c->old.max_scope_depth = 9;
1448
1449     __ getlocal_0(c);
1450     __ pushscope(c);
1451     __ getscopeobject(c, 0);
1452     __ getlex(c,"::Object");
1453     __ pushscope(c);
1454     __ getlex(c,"flash.events::EventDispatcher");
1455     __ pushscope(c);
1456     __ getlex(c,"flash.display::DisplayObject");
1457     __ pushscope(c);
1458     __ getlex(c,"flash.display::InteractiveObject");
1459     __ pushscope(c);
1460     __ getlex(c,"flash.display::DisplayObjectContainer");
1461     __ pushscope(c);
1462     __ getlex(c,"flash.display::Sprite");
1463     __ pushscope(c);
1464     __ getlex(c,"flash.display::MovieClip");
1465     __ pushscope(c);
1466     __ getlex(c,"flash.display::MovieClip");
1467     __ newclass(c,cls);
1468     __ popscope(c);
1469     __ popscope(c);
1470     __ popscope(c);
1471     __ popscope(c);
1472     __ popscope(c);
1473     __ popscope(c);
1474     __ popscope(c);
1475     __ initproperty(c,"rfx::MainTimeline");
1476     __ returnvoid(c);
1477
1478     //abc_method_body_addClassTrait(c, "rfx:MainTimeline", 1, cls);
1479     multiname_t*classname = multiname_fromstring("rfx::MainTimeline");
1480     abc_initscript_addClassTrait(s, classname, cls);
1481     multiname_destroy(classname);
1482
1483     swf_WriteABC(abctag, file);
1484 }
1485