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_t* abc_method_new(abc_file_t*file, multiname_t*returntype, char body)
 174 {
 175     /* construct method object */
 176     NEW(abc_method_t,m);
 177     m->index = array_length(file->methods);
 178     array_append(file->methods, NO_KEY, m);
 179     m->return_type = returntype;
 180
 181     if(body) {
 182         /* construct code (method body) object */
 183         NEW(abc_method_body_t,c);
 184         array_append(file->method_bodies, NO_KEY, c);
 185         c->index = array_length(file->method_bodies);
 186         c->file = file;
 187         c->traits = list_new();
 188         c->code = 0;
 189
 190         /* crosslink the two objects */
 191         m->body = c;
 192         c->method = m;
 193     }
 194
 195     return m;
 196 }
 197
 198 abc_method_t* abc_class_getconstructor(abc_class_t*cls, multiname_t*returntype)
 199 {
 200     if(cls->constructor) {
 201         return cls->constructor;
 202     }
 203     abc_method_t* m = abc_method_new(cls->file, returntype, 1);
 204     cls->constructor = m;
 205     return m;
 206 }
 207
 208 abc_method_t* abc_class_getstaticconstructor(abc_class_t*cls, multiname_t*returntype)
 209 {
 210     if(cls->static_constructor) {
 211         return cls->static_constructor;
 212     }
 213     abc_method_t* m = abc_method_new(cls->file, returntype, 1);
 214     cls->static_constructor = m;
 215     return m;
 216 }
 217
 218 trait_t*trait_new(int type, multiname_t*name, int data1, int data2, constant_t*v)
 219 {
 220     trait_t*trait = malloc(sizeof(trait_t));
 221     memset(trait, 0, sizeof(trait_t));
 222     trait->kind = type&0x0f;
 223     trait->attributes = type&0xf0;
 224     trait->name = name;
 225     trait->data1 = data1;
 226     trait->data2 = data2;
 227     trait->value = v;
 228     return trait;
 229 }
 230
 231 trait_t*trait_new_member(trait_list_t**traits, multiname_t*type, multiname_t*name,constant_t*v)
 232 {
 233     int kind = TRAIT_SLOT;
 234     trait_t*trait = malloc(sizeof(trait_t));
 235     memset(trait, 0, sizeof(trait_t));
 236     trait->kind = kind&0x0f;
 237     trait->attributes = kind&0xf0;
 238     trait->name = name;
 239     trait->type_name = type;
 240
 241     trait->slot_id = list_length(*traits)+1;
 242     trait_list_t*l = *traits;
 243     list_append_(traits, trait);
 244     return trait;
 245 }
 246 trait_t*trait_new_method(trait_list_t**traits, 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
 256     /* start assigning traits at position #1.
 257        Weird things happen when assigning slot 0- slot 0 and 1 seem
 258        to be identical */
 259     trait->slot_id = list_length(*traits)+1;
 260     list_append_(traits, trait);
 261     return trait;
 262 }
 263
 264 abc_method_t* abc_class_method(abc_class_t*cls, multiname_t*returntype, multiname_t*name)
 265 {
 266     abc_file_t*file = cls->file;
 267     abc_method_t* m = abc_method_new(cls->file, returntype, !(cls->flags&CLASS_INTERFACE));
 268     m->trait = trait_new_method(&cls->traits, multiname_clone(name), m);
 269     return m;
 270 }
 271 abc_method_t* abc_class_staticmethod(abc_class_t*cls, multiname_t*returntype, multiname_t*name)
 272 {
 273     abc_file_t*file = cls->file;
 274     abc_method_t* m = abc_method_new(cls->file, returntype, !(cls->flags&CLASS_INTERFACE));
 275     m->trait = trait_new_method(&cls->static_traits, multiname_clone(name), m);
 276     return m;
 277 }
 278
 279 trait_t* abc_class_slot(abc_class_t*cls, multiname_t*name, multiname_t*type)
 280 {
 281     abc_file_t*file = cls->file;
 282     multiname_t*m_name = multiname_clone(name);
 283     multiname_t*m_type = multiname_clone(type);
 284     trait_t*t = trait_new_member(&cls->traits, m_type, m_name, 0);
 285     return t;
 286 }
 287 trait_t* abc_class_staticslot(abc_class_t*cls, multiname_t*name, multiname_t*type)
 288 {
 289     abc_file_t*file = cls->file;
 290     multiname_t*m_name = multiname_clone(name);
 291     multiname_t*m_type = multiname_clone(type);
 292     trait_t*t = trait_new_member(&cls->static_traits, m_type, m_name, 0);
 293     return t;
 294 }
 295
 296
 297 trait_t* abc_class_find_slotid(abc_class_t*cls, int slotid)
 298 {
 299     trait_list_t*l;
 300     trait_t*t=0;
 301     for(l=cls->traits;l;l=l->next) {
 302         if(l->trait->slot_id==slotid) {
 303             t=l->trait;
 304             break;
 305         }
 306     }
 307     return t;
 308 }
 309
 310 void abc_method_body_addClassTrait(abc_method_body_t*code, char*multiname, int slotid, abc_class_t*cls)
 311 {
 312     abc_file_t*file = code->file;
 313     multiname_t*m = multiname_fromstring(multiname);
 314     trait_t*trait = trait_new(TRAIT_CLASS, m, slotid, 0, 0);
 315     trait->cls = cls;
 316     list_append(code->traits, trait);
 317 }
 318
 319 /* notice: traits of a method (body) belonging to an init script
 320    and traits of the init script are *not* the same thing */
 321 int abc_initscript_addClassTrait(abc_script_t*script, multiname_t*multiname, abc_class_t*cls)
 322 {
 323     abc_file_t*file = script->file;
 324     multiname_t*m = multiname_clone(multiname);
 325     int slotid = list_length(script->traits)+1;
 326     trait_t*trait = trait_new(TRAIT_CLASS, m, slotid, 0, 0);
 327     trait->cls = cls;
 328     list_append(script->traits, trait);
 329     return slotid;
 330 }
 331
 332 abc_script_t* abc_initscript(abc_file_t*file)
 333 {
 334     abc_method_t*m = abc_method_new(file, 0, 1);
 335     abc_script_t* s = malloc(sizeof(abc_script_t));
 336     s->method = m;
 337     s->traits = list_new();
 338     s->file = file;
 339     array_append(file->scripts, NO_KEY, s);
 340     return s;
 341 }
 342
 343 static void traits_dump(FILE*fo, const char*prefix, trait_list_t*traits, abc_file_t*file, dict_t*methods_seen);
 344
 345 static void dump_method(FILE*fo, const char*prefix,
 346                                  const char*attr,
 347                                  const char*type,
 348                                  const char*name,
 349                                  abc_method_t*m, abc_file_t*file, dict_t*methods_seen)
 350 {
 351     if(methods_seen)
 352         dict_put(methods_seen, m, 0);
 353
 354     char*return_type = 0;
 355     if(m->return_type)
 356         return_type = multiname_tostring(m->return_type);
 357     else
 358         return_type = strdup("void");
 359     char*paramstr = params_tostring(m->parameters);
 360     fprintf(fo, "%s%s%s %s %s=%s %s (%d params, %d optional)\n", prefix, attr, type, return_type, name, m->name, paramstr,
 361             list_length(m->parameters),
 362             list_length(m->optional_parameters)
 363             );
 364     free(paramstr);paramstr=0;
 365     free(return_type);return_type=0;
 366
 367     abc_method_body_t*c = m->body;
 368     if(!c) {
 369         return;
 370     }
 371
 372     fprintf(fo, "%s[stack:%d locals:%d scope:%d-%d flags:",
 373             prefix, c->old.max_stack, c->old.local_count, c->old.init_scope_depth,
 374             c->old.max_scope_depth);
 375
 376
 377     int flags = c->method->flags;
 378     if(flags&METHOD_NEED_ARGUMENTS) {fprintf(fo, " need_arguments");flags&=~METHOD_NEED_ARGUMENTS;}
 379     if(flags&METHOD_NEED_ACTIVATION) {fprintf(fo, " need_activation");flags&=~METHOD_NEED_ACTIVATION;}
 380     if(flags&METHOD_NEED_REST) {fprintf(fo, " need_rest");flags&=~METHOD_NEED_REST;}
 381     if(flags&METHOD_HAS_OPTIONAL) {fprintf(fo, " has_optional");flags&=~METHOD_HAS_OPTIONAL;}
 382     if(flags&METHOD_SET_DXNS) {fprintf(fo, " set_dxns");flags&=~METHOD_SET_DXNS;}
 383     if(flags&METHOD_HAS_PARAM_NAMES) {fprintf(fo, " has_param_names");flags&=~METHOD_HAS_PARAM_NAMES;}
 384     if(flags) fprintf(fo, " %02x", flags);
 385     fprintf(fo, "]");
 386
 387     if(m->trait) {
 388         fprintf(fo, " slot:%d", m->trait->slot_id);
 389     }
 390     fprintf(fo, "\n");
 391
 392
 393     char prefix2[80];
 394     sprintf(prefix2, "%s    ", prefix);
 395     if(c->traits)
 396         traits_dump(fo, prefix, c->traits, file, methods_seen);
 397     fprintf(fo, "%s{\n", prefix);
 398     code_dump2(c->code, c->exceptions, file, prefix2, fo);
 399     fprintf(fo, "%s}\n\n", prefix);
 400 }
 401
 402 static void traits_free(trait_list_t*traits)
 403 {
 404     trait_list_t*t = traits;
 405     while(t) {
 406         if(t->trait->name) {
 407             multiname_destroy(t->trait->name);t->trait->name = 0;
 408         }
 409         if(t->trait->kind == TRAIT_SLOT || t->trait->kind == TRAIT_CONST) {
 410             multiname_destroy(t->trait->type_name);
 411         }
 412         if(t->trait->value) {
 413             constant_free(t->trait->value);t->trait->value = 0;
 414         }
 415         free(t->trait);t->trait = 0;
 416         t = t->next;
 417     }
 418     list_free(traits);
 419 }
 420
 421 static char trait_is_method(trait_t*trait)
 422 {
 423     return (trait->kind == TRAIT_METHOD || trait->kind == TRAIT_GETTER ||
 424             trait->kind == TRAIT_SETTER || trait->kind == TRAIT_FUNCTION);
 425 }
 426
 427 static trait_list_t* traits_parse(TAG*tag, pool_t*pool, abc_file_t*file)
 428 {
 429     int num_traits = swf_GetU30(tag);
 430     trait_list_t*traits = list_new();
 431     int t;
 432     if(num_traits) {
 433         DEBUG printf("%d traits\n", num_traits);
 434     }
 435
 436     for(t=0;t<num_traits;t++) {
 437         NEW(trait_t,trait);
 438         list_append(traits, trait);
 439
 440         trait->name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag))); // always a QName (ns,name)
 441
 442         const char*name = 0;
 443         DEBUG name = multiname_tostring(trait->name);
 444         U8 kind = swf_GetU8(tag);
 445         U8 attributes = kind&0xf0;
 446         kind&=0x0f;
 447         trait->kind = kind;
 448         trait->attributes = attributes;
 449         DEBUG printf("  trait %d) %s type=%02x\n", t, name, kind);
 450         if(kind == TRAIT_METHOD || kind == TRAIT_GETTER || kind == TRAIT_SETTER) { // method / getter / setter
 451             trait->disp_id = swf_GetU30(tag);
 452             trait->method = (abc_method_t*)array_getvalue(file->methods, swf_GetU30(tag));
 453             trait->method->trait = trait;
 454             DEBUG printf("  method/getter/setter\n");
 455         } else if(kind == TRAIT_FUNCTION) { // function
 456             trait->slot_id =  swf_GetU30(tag);
 457             trait->method = (abc_method_t*)array_getvalue(file->methods, swf_GetU30(tag));
 458             trait->method->trait = trait;
 459         } else if(kind == TRAIT_CLASS) { // class
 460             trait->slot_id = swf_GetU30(tag);
 461             trait->cls = (abc_class_t*)array_getvalue(file->classes, swf_GetU30(tag));
 462             DEBUG printf("  class %s %d %d\n", name, trait->slot_id, trait->cls);
 463         } else if(kind == TRAIT_SLOT || kind == TRAIT_CONST) { // slot, const
 464             trait->slot_id = swf_GetU30(tag);
 465             trait->type_name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
 466             int vindex = swf_GetU30(tag);
 467             if(vindex) {
 468                 int vkind = swf_GetU8(tag);
 469                 trait->value = constant_fromindex(pool, vindex, vkind);
 470             }
 471             DEBUG printf("  slot %s %d %s (%s)\n", name, trait->slot_id, trait->type_name->name, constant_tostring(trait->value));
 472         } else {
 473             fprintf(stderr, "Can't parse trait type %d\n", kind);
 474         }
 475         if(attributes&0x40) {
 476             int num = swf_GetU30(tag);
 477             int s;
 478             for(s=0;s<num;s++) {
 479                 swf_GetU30(tag); //index into metadata array
 480             }
 481         }
 482     }
 483     return traits;
 484 }
 485
 486 void traits_skip(TAG*tag)
 487 {
 488     int num_traits = swf_GetU30(tag);
 489     int t;
 490     for(t=0;t<num_traits;t++) {
 491         swf_GetU30(tag);
 492         U8 kind = swf_GetU8(tag);
 493         U8 attributes = kind&0xf0;
 494         kind&=0x0f;
 495         swf_GetU30(tag);
 496         swf_GetU30(tag);
 497         if(kind == TRAIT_SLOT || kind == TRAIT_CONST) {
 498             if(swf_GetU30(tag)) swf_GetU8(tag);
 499         } else if(kind>TRAIT_CONST) {
 500             fprintf(stderr, "Can't parse trait type %d\n", kind);
 501         }
 502         if(attributes&0x40) {
 503             int s, num = swf_GetU30(tag);
 504             for(s=0;s<num;s++) swf_GetU30(tag);
 505         }
 506     }
 507 }
 508
 509
 510 static void traits_write(pool_t*pool, TAG*tag, trait_list_t*traits)
 511 {
 512     if(!traits) {
 513         swf_SetU30(tag, 0);
 514         return;
 515     }
 516     swf_SetU30(tag, list_length(traits));
 517     int s;
 518
 519     while(traits) {
 520         trait_t*trait = traits->trait;
 521
 522         swf_SetU30(tag, pool_register_multiname(pool, trait->name));
 523         swf_SetU8(tag, trait->kind|trait->attributes);
 524
 525         swf_SetU30(tag, trait->data1);
 526
 527         if(trait->kind == TRAIT_CLASS) {
 528             swf_SetU30(tag, trait->cls->index);
 529         } else if(trait->kind == TRAIT_GETTER ||
 530                   trait->kind == TRAIT_SETTER ||
 531                   trait->kind == TRAIT_METHOD) {
 532             swf_SetU30(tag, trait->method->index);
 533         } else if(trait->kind == TRAIT_SLOT ||
 534                   trait->kind == TRAIT_CONST) {
 535             int index = pool_register_multiname(pool, trait->type_name);
 536             swf_SetU30(tag, index);
 537         } else  {
 538             swf_SetU30(tag, trait->data2);
 539         }
 540
 541         if(trait->kind == TRAIT_SLOT || trait->kind == TRAIT_CONST) {
 542             int vindex = constant_get_index(pool, trait->value);
 543             swf_SetU30(tag, vindex);
 544             if(vindex) {
 545                 swf_SetU8(tag, trait->value->type);
 546             }
 547         }
 548         if(trait->attributes&0x40) {
 549             // metadata
 550             swf_SetU30(tag, 0);
 551         }
 552         traits = traits->next;
 553     }
 554 }
 555
 556
 557 static void traits_dump(FILE*fo, const char*prefix, trait_list_t*traits, abc_file_t*file, dict_t*methods_seen)
 558 {
 559     int t;
 560     while(traits) {
 561         trait_t*trait = traits->trait;
 562         char*name = multiname_tostring(trait->name);
 563         U8 kind = trait->kind;
 564         U8 attributes = trait->attributes;
 565
 566         char a = attributes & (TRAIT_ATTR_OVERRIDE|TRAIT_ATTR_FINAL);
 567         char* type = "";
 568         if(a==TRAIT_ATTR_FINAL)
 569             type = "final ";
 570         else if(a==TRAIT_ATTR_OVERRIDE)
 571             type = "override ";
 572         else if(a==(TRAIT_ATTR_OVERRIDE|TRAIT_ATTR_FINAL))
 573             type = "final override ";
 574
 575         if(attributes&TRAIT_ATTR_METADATA)
 576             fprintf(fo, "<metadata>");
 577
 578         if(kind == TRAIT_METHOD) {
 579             abc_method_t*m = trait->method;
 580             dump_method(fo, prefix, type, "method", name, m, file, methods_seen);
 581         } else if(kind == TRAIT_GETTER) {
 582             abc_method_t*m = trait->method;
 583             dump_method(fo, prefix, type, "getter", name, m, file, methods_seen);
 584         } else if(kind == TRAIT_SETTER) {
 585             abc_method_t*m = trait->method;
 586             dump_method(fo, prefix, type, "setter", name, m, file, methods_seen);
 587         } else if(kind == TRAIT_FUNCTION) { // function
 588             abc_method_t*m = trait->method;
 589             dump_method(fo, prefix, type, "function", name, m, file, methods_seen);
 590         } else if(kind == TRAIT_CLASS) { // class
 591             abc_class_t*cls = trait->cls;
 592             if(!cls) {
 593                 fprintf(fo, "%sslot %d: class %s=00000000\n", prefix, trait->slot_id, name);
 594             } else {
 595                 fprintf(fo, "%sslot %d: class %s=%s\n", prefix, trait->slot_id, name, cls->classname->name);
 596             }
 597         } else if(kind == TRAIT_SLOT || kind == TRAIT_CONST) { // slot, const
 598             int slot_id = trait->slot_id;
 599             char*type_name = multiname_tostring(trait->type_name);
 600             char*value = constant_tostring(trait->value);
 601             fprintf(fo, "%sslot %d: %s %s:%s %s %s\n", prefix, trait->slot_id,
 602                     kind==TRAIT_CONST?"const":"var", name, type_name,
 603                     value?"=":"", value?value:"");
 604             if(value) free(value);
 605             free(type_name);
 606         } else {
 607             fprintf(fo, "%s    can't dump trait type %d\n", prefix, kind);
 608         }
 609         free(name);
 610         traits=traits->next;
 611     }
 612 }
 613
 614 void* swf_DumpABC(FILE*fo, void*code, char*prefix)
 615 {
 616     abc_file_t* file = (abc_file_t*)code;
 617
 618     if(file->name) {
 619         fprintf(fo, "%s#\n", prefix);
 620         fprintf(fo, "%s#name: %s\n", prefix, file->name);
 621         fprintf(fo, "%s#\n", prefix);
 622     }
 623
 624     int t;
 625     for(t=0;t<file->metadata->num;t++) {
 626         const char*entry_name = array_getkey(file->metadata, t);
 627         fprintf(fo, "%s#Metadata \"%s\":\n", prefix, entry_name);
 628         int s;
 629         array_t*items = (array_t*)array_getvalue(file->metadata, t);
 630         for(s=0;s<items->num;s++) {
 631             fprintf(fo, "%s#  %s=%s\n", prefix, array_getkey(items, s), array_getvalue(items,s));
 632         }
 633         fprintf(fo, "%s#\n", prefix);
 634     }
 635
 636     dict_t*methods_seen = dict_new2(&ptr_type);
 637     for(t=0;t<file->classes->num;t++) {
 638         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 639         char prefix2[80];
 640         sprintf(prefix2, "%s    ", prefix);
 641
 642         fprintf(fo, "%s", prefix);
 643         if(cls->flags&1) fprintf(fo, "sealed ");
 644         if(cls->flags&2) fprintf(fo, "final ");
 645         if(cls->flags&4) fprintf(fo, "interface ");
 646         if(cls->flags&8) {
 647             char*s = namespace_tostring(cls->protectedNS);
 648             fprintf(fo, "protectedNS(%s) ", s);
 649             free(s);
 650         }
 651
 652         char*classname = multiname_tostring(cls->classname);
 653         fprintf(fo, "class %s", classname);
 654         free(classname);
 655         if(cls->superclass) {
 656             char*supername = multiname_tostring(cls->superclass);
 657             fprintf(fo, " extends %s", supername);
 658             free(supername);
 659             multiname_list_t*ilist = cls->interfaces;
 660             if(ilist)
 661                 fprintf(fo, " implements");
 662             while(ilist) {
 663                 char*s = multiname_tostring(ilist->multiname);
 664                 fprintf(fo, " %s", s);
 665                 free(s);
 666                 ilist = ilist->next;
 667             }
 668             ilist->next;
 669         }
 670         if(cls->flags&0xf0)
 671             fprintf(fo, "extra flags=%02x\n", cls->flags&0xf0);
 672         fprintf(fo, "%s{\n", prefix);
 673
 674         dict_put(methods_seen, cls->static_constructor, 0);
 675         dict_put(methods_seen, cls->constructor, 0);
 676
 677         if(cls->static_constructor) {
 678             dump_method(fo, prefix2, "", "staticconstructor", "", cls->static_constructor, file, methods_seen);
 679         }
 680         traits_dump(fo, prefix2, cls->static_traits, file, methods_seen);
 681
 682         char*n = multiname_tostring(cls->classname);
 683         if(cls->constructor)
 684             dump_method(fo, prefix2, "", "constructor", n, cls->constructor, file, methods_seen);
 685         free(n);
 686         traits_dump(fo, prefix2,cls->traits, file, methods_seen);
 687         fprintf(fo, "%s}\n", prefix);
 688     }
 689     fprintf(fo, "%s\n", prefix);
 690
 691     for(t=0;t<file->scripts->num;t++) {
 692         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
 693         dump_method(fo, prefix, "", "initmethod", "init", s->method, file, methods_seen);
 694         traits_dump(fo, prefix, s->traits, file, methods_seen);
 695     }
 696
 697     char extra=0;
 698     for(t=0;t<file->methods->num;t++) {
 699         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
 700         if(!dict_contains(methods_seen, m)) {
 701             if(!extra) {
 702                 extra=1;
 703                 fprintf(fo, "\n");
 704                 fprintf(fo, "%s//internal (non-class non-script) methods:\n", prefix);
 705             }
 706             char name[18];
 707             sprintf(name, "%08x ", m);
 708             dump_method(fo, prefix, "", "internalmethod", name, m, file, methods_seen);
 709         }
 710     }
 711     dict_destroy(methods_seen);
 712
 713     return file;
 714 }
 715
 716 void* swf_ReadABC(TAG*tag)
 717 {
 718     abc_file_t* file = abc_file_new();
 719     pool_t*pool = pool_new();
 720
 721     swf_SetTagPos(tag, 0);
 722     int t;
 723     if(tag->id == ST_DOABC) {
 724         U32 abcflags = swf_GetU32(tag);
 725         DEBUG printf("flags=%08x\n", abcflags);
 726         char*name= swf_GetString(tag);
 727         file->name = (name&&name[0])?strdup(name):0;
 728     }
 729     U32 version = swf_GetU32(tag);
 730     if(version!=0x002e0010) {
 731         fprintf(stderr, "Warning: unknown AVM2 version %08x\n", version);
 732     }
 733
 734     pool_read(pool, tag);
 735
 736     int num_methods = swf_GetU30(tag);
 737     DEBUG printf("%d methods\n", num_methods);
 738     for(t=0;t<num_methods;t++) {
 739         NEW(abc_method_t,m);
 740         int param_count = swf_GetU30(tag);
 741         int return_type_index = swf_GetU30(tag);
 742         if(return_type_index)
 743             m->return_type = multiname_clone(pool_lookup_multiname(pool, return_type_index));
 744         else
 745             m->return_type = 0;
 746
 747         int s;
 748         for(s=0;s<param_count;s++) {
 749             int type_index = swf_GetU30(tag);
 750
 751             /* type_index might be 0, which probably means "..." (varargs) */
 752             multiname_t*param = type_index?multiname_clone(pool_lookup_multiname(pool, type_index)):0;
 753             list_append(m->parameters, param);
 754         }
 755
 756         int namenr = swf_GetU30(tag);
 757         if(namenr)
 758             m->name = strdup(pool_lookup_string(pool, namenr));
 759         else
 760             m->name = strdup("");
 761
 762         m->flags = swf_GetU8(tag);
 763
 764         DEBUG printf("method %d) %s %s flags=%02x\n", t, m->name, params_tostring(m->parameters), m->flags);
 765
 766         if(m->flags&0x08) {
 767             m->optional_parameters = list_new();
 768             int num = swf_GetU30(tag);
 769             int s;
 770             for(s=0;s<num;s++) {
 771                 int vindex = swf_GetU30(tag);
 772                 U8 vkind = swf_GetU8(tag); // specifies index type for "val"
 773                 constant_t*c = constant_fromindex(pool, vindex, vkind);
 774                 list_append(m->optional_parameters, c);
 775             }
 776         }
 777         if(m->flags&0x80) {
 778             /* debug information- not used by avm2 */
 779             multiname_list_t*l = m->parameters;
 780             while(l) {
 781                 const char*name = pool_lookup_string(pool, swf_GetU30(tag));
 782                 l = l->next;
 783             }
 784         }
 785         m->index = array_length(file->methods);
 786         array_append(file->methods, NO_KEY, m);
 787     }
 788
 789     parse_metadata(tag, file, pool);
 790
 791     /* skip classes, and scripts for now, and do the real parsing later */
 792     int num_classes = swf_GetU30(tag);
 793     int classes_pos = tag->pos;
 794     DEBUG printf("%d classes\n", num_classes);
 795     for(t=0;t<num_classes;t++) {
 796         abc_class_t*cls = malloc(sizeof(abc_class_t));
 797         memset(cls, 0, sizeof(abc_class_t));
 798
 799         swf_GetU30(tag); //classname
 800         swf_GetU30(tag); //supername
 801
 802         array_append(file->classes, NO_KEY, cls);
 803
 804         cls->flags = swf_GetU8(tag);
 805         DEBUG printf("class %d %02x\n", t, cls->flags);
 806         if(cls->flags&8)
 807             swf_GetU30(tag); //protectedNS
 808         int s;
 809         int inum = swf_GetU30(tag); //interface count
 810         cls->interfaces = 0;
 811         for(s=0;s<inum;s++) {
 812             int interface_index = swf_GetU30(tag);
 813             multiname_t* m = multiname_clone(pool_lookup_multiname(pool, interface_index));
 814             list_append(cls->interfaces, m);
 815             DEBUG printf("  class %d interface: %s\n", t, m->name);
 816         }
 817
 818         int iinit = swf_GetU30(tag); //iinit
 819         DEBUG printf("--iinit-->%d\n", iinit);
 820         traits_skip(tag);
 821     }
 822     for(t=0;t<num_classes;t++) {
 823         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 824         int cinit = swf_GetU30(tag);
 825         DEBUG printf("--cinit(%d)-->%d\n", t, cinit);
 826         cls->static_constructor = (abc_method_t*)array_getvalue(file->methods, cinit);
 827         traits_skip(tag);
 828     }
 829     int num_scripts = swf_GetU30(tag);
 830     DEBUG printf("%d scripts\n", num_scripts);
 831     for(t=0;t<num_scripts;t++) {
 832         int init = swf_GetU30(tag);
 833         traits_skip(tag);
 834     }
 835
 836     int num_method_bodies = swf_GetU30(tag);
 837     DEBUG printf("%d method bodies\n", num_method_bodies);
 838     for(t=0;t<num_method_bodies;t++) {
 839         int methodnr = swf_GetU30(tag);
 840         if(methodnr >= file->methods->num) {
 841             printf("Invalid method number: %d\n", methodnr);
 842             return 0;
 843         }
 844         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, methodnr);
 845         abc_method_body_t*c = malloc(sizeof(abc_method_body_t));
 846         memset(c, 0, sizeof(abc_method_body_t));
 847         c->old.max_stack = swf_GetU30(tag);
 848         c->old.local_count = swf_GetU30(tag);
 849         c->old.init_scope_depth = swf_GetU30(tag);
 850         c->old.max_scope_depth = swf_GetU30(tag);
 851
 852         c->init_scope_depth = c->old.init_scope_depth;
 853         int code_length = swf_GetU30(tag);
 854
 855         c->method = m;
 856         m->body = c;
 857
 858         int pos = tag->pos + code_length;
 859         codelookup_t*codelookup = 0;
 860         c->code = code_parse(tag, code_length, file, pool, &codelookup);
 861         tag->pos = pos;
 862
 863         int exception_count = swf_GetU30(tag);
 864         int s;
 865         c->exceptions = list_new();
 866         for(s=0;s<exception_count;s++) {
 867             abc_exception_t*e = malloc(sizeof(abc_exception_t));
 868
 869             e->from = code_atposition(codelookup, swf_GetU30(tag));
 870             e->to = code_atposition(codelookup, swf_GetU30(tag));
 871             e->target = code_atposition(codelookup, swf_GetU30(tag));
 872
 873             e->exc_type = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
 874             e->var_name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
 875             //e->var_name = pool_lookup_string(pool, swf_GetU30(tag));
 876             //if(e->var_name) e->var_name = strdup(e->var_name);
 877             list_append(c->exceptions, e);
 878         }
 879         codelookup_free(codelookup);
 880         c->traits = traits_parse(tag, pool, file);
 881
 882         DEBUG printf("method_body %d) (method %d), %d bytes of code\n", t, methodnr, code_length);
 883
 884         array_append(file->method_bodies, NO_KEY, c);
 885     }
 886     if(tag->len - tag->pos) {
 887         fprintf(stderr, "%d unparsed bytes remaining in ABC block\n", tag->len - tag->pos);
 888         return 0;
 889     }
 890
 891     swf_SetTagPos(tag, classes_pos);
 892     for(t=0;t<num_classes;t++) {
 893         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 894
 895         int classname_index = swf_GetU30(tag);
 896         int superclass_index = swf_GetU30(tag);
 897         cls->classname = multiname_clone(pool_lookup_multiname(pool, classname_index));
 898         cls->superclass = multiname_clone(pool_lookup_multiname(pool, superclass_index));
 899         cls->flags = swf_GetU8(tag);
 900         const char*ns = "";
 901         if(cls->flags&8) {
 902             int ns_index = swf_GetU30(tag);
 903             cls->protectedNS = namespace_clone(pool_lookup_namespace(pool, ns_index));
 904         }
 905
 906         int num_interfaces = swf_GetU30(tag); //interface count
 907         int s;
 908         for(s=0;s<num_interfaces;s++) {
 909             swf_GetU30(tag);
 910         }
 911         int iinit = swf_GetU30(tag);
 912         cls->constructor = (abc_method_t*)array_getvalue(file->methods, iinit);
 913         cls->traits = traits_parse(tag, pool, file);
 914     }
 915     for(t=0;t<num_classes;t++) {
 916         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 917         /* SKIP */
 918         swf_GetU30(tag); // cindex
 919         cls->static_traits = traits_parse(tag, pool, file);
 920     }
 921     int num_scripts2 = swf_GetU30(tag);
 922     for(t=0;t<num_scripts2;t++) {
 923         int init = swf_GetU30(tag);
 924         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, init);
 925
 926         abc_script_t*s = malloc(sizeof(abc_script_t));
 927         memset(s, 0, sizeof(abc_script_t));
 928         s->method = m;
 929         s->traits = traits_parse(tag, pool, file);
 930         array_append(file->scripts, NO_KEY, s);
 931     }
 932
 933     pool_destroy(pool);
 934     return file;
 935 }
 936
 937 void swf_WriteABC(TAG*abctag, void*code)
 938 {
 939     abc_file_t*file = (abc_file_t*)code;
 940     pool_t*pool = pool_new();
 941
 942     TAG*tmp = swf_InsertTag(0,0);
 943     TAG*tag = tmp;
 944     int t;
 945
 946     /* add method bodies where needed */
 947     for(t=0;t<file->classes->num;t++) {
 948         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
 949         if(!c->constructor) {
 950             if(!(c->flags&CLASS_INTERFACE)) {
 951                 NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
 952                 NEW(abc_method_body_t,body);array_append(file->method_bodies, NO_KEY, body);
 953                 // don't bother to set m->index
 954                 body->method = m; m->body = body;
 955                 __ returnvoid(body);
 956                 c->constructor = m;
 957             } else {
 958                 NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
 959                 c->constructor = m;
 960             }
 961         }
 962         if(!c->static_constructor) {
 963             NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
 964             NEW(abc_method_body_t,body);array_append(file->method_bodies, NO_KEY, body);
 965             body->method = m; m->body = body;
 966             __ returnvoid(body);
 967             c->static_constructor = m;
 968         }
 969     }
 970
 971
 972     swf_SetU30(tag, file->methods->num);
 973     /* enumerate classes, methods and method bodies */
 974     for(t=0;t<file->methods->num;t++) {
 975         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
 976         m->index = t;
 977     }
 978     for(t=0;t<file->classes->num;t++) {
 979         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
 980         c->index = t;
 981     }
 982     for(t=0;t<file->method_bodies->num;t++) {
 983         abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
 984         m->index = t;
 985     }
 986
 987     /* generate code statistics */
 988     for(t=0;t<file->method_bodies->num;t++) {
 989         abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
 990         m->stats = code_get_statistics(m->code, m->exceptions);
 991     }
 992
 993     /* level init scope depths: The init scope depth of a method is
 994        always as least as high as the init scope depth of it's surrounding
 995        class.
 996        A method has it's own init_scope_depth if it's an init method
 997        (then its init scope depth is zero), or if it's used as a closure.
 998
 999        Not sure yet what to do with methods which are used at different
1000        locations- e.g. the nullmethod is used all over the place.
1001        EDIT: flashplayer doesn't allow this anyway- a method can only
1002              be used once
1003
1004        Also, I have the strong suspicion that flash player uses only
1005        the difference between max_scope_stack and init_scope_stack, anyway.
1006      */
1007     for(t=0;t<file->classes->num;t++) {
1008         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1009         trait_list_t*traits = c->traits;
1010         if(c->constructor && c->constructor->body &&
1011            c->constructor->body->init_scope_depth < c->init_scope_depth) {
1012            c->constructor->body->init_scope_depth = c->init_scope_depth;
1013         }
1014         if(c->static_constructor && c->static_constructor->body &&
1015            c->static_constructor->body->init_scope_depth < c->init_scope_depth) {
1016            c->static_constructor->body->init_scope_depth = c->init_scope_depth;
1017         }
1018         while(traits) {
1019             trait_t*trait = traits->trait;
1020             if(trait_is_method(trait) && trait->method->body) {
1021                 abc_method_body_t*body = trait->method->body;
1022                 if(body->init_scope_depth < c->init_scope_depth) {
1023                    body->init_scope_depth = c->init_scope_depth;
1024                 }
1025             }
1026             traits = traits->next;
1027         }
1028     }
1029
1030     for(t=0;t<file->methods->num;t++) {
1031         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
1032         int n = 0;
1033         multiname_list_t*l = m->parameters;
1034         int num_params = list_length(m->parameters);
1035         swf_SetU30(tag, num_params);
1036         if(m->return_type)
1037             swf_SetU30(tag, pool_register_multiname(pool, m->return_type));
1038         else
1039             swf_SetU30(tag, 0);
1040         int s;
1041         while(l) {
1042             swf_SetU30(tag, pool_register_multiname(pool, l->multiname));
1043             l = l->next;
1044         }
1045         if(m->name) {
1046             swf_SetU30(tag, pool_register_string(pool, m->name));
1047         } else {
1048             swf_SetU30(tag, 0);
1049         }
1050
1051         U8 flags = m->flags&(METHOD_NEED_REST|METHOD_NEED_ARGUMENTS);
1052         if(m->optional_parameters)
1053             flags |= METHOD_HAS_OPTIONAL;
1054         if(m->body) {
1055             flags |= m->body->stats->flags;
1056         }
1057
1058         swf_SetU8(tag, flags);
1059         if(flags&METHOD_HAS_OPTIONAL) {
1060             swf_SetU30(tag, list_length(m->optional_parameters));
1061             constant_list_t*l = m->optional_parameters;
1062             while(l) {
1063                 swf_SetU30(tag, constant_get_index(pool, l->constant));
1064                 swf_SetU8(tag, l->constant->type);
1065                 l = l->next;
1066             }
1067         }
1068     }
1069
1070     /* write metadata */
1071     swf_SetU30(tag, file->metadata->num);
1072     for(t=0;t<file->metadata->num;t++) {
1073         const char*entry_name = array_getkey(file->metadata, t);
1074         swf_SetU30(tag, pool_register_string(pool, entry_name));
1075         array_t*items = (array_t*)array_getvalue(file->metadata, t);
1076         swf_SetU30(tag, items->num);
1077         int s;
1078         for(s=0;s<items->num;s++) {
1079             int i1 = pool_register_string(pool, array_getkey(items, s));
1080             int i2 = pool_register_string(pool, array_getvalue(items, s));
1081             swf_SetU30(tag, i1);
1082             swf_SetU30(tag, i2);
1083         }
1084     }
1085
1086     swf_SetU30(tag, file->classes->num);
1087     for(t=0;t<file->classes->num;t++) {
1088         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1089
1090         int classname_index = pool_register_multiname(pool, c->classname);
1091         int superclass_index = pool_register_multiname(pool, c->superclass);
1092
1093         swf_SetU30(tag, classname_index);
1094         swf_SetU30(tag, superclass_index);
1095
1096         swf_SetU8(tag, c->flags); // flags
1097         if(c->flags&0x08) {
1098             int ns_index = pool_register_namespace(pool, c->protectedNS);
1099             swf_SetU30(tag, ns_index);
1100         }
1101
1102         swf_SetU30(tag, list_length(c->interfaces));
1103         multiname_list_t*interface= c->interfaces;
1104         while(interface) {
1105             swf_SetU30(tag, pool_register_multiname(pool, interface->multiname));
1106             interface = interface->next;
1107         }
1108
1109         assert(c->constructor);
1110         swf_SetU30(tag, c->constructor->index);
1111
1112         traits_write(pool, tag, c->traits);
1113     }
1114     for(t=0;t<file->classes->num;t++) {
1115         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1116         assert(c->static_constructor);
1117         swf_SetU30(tag, c->static_constructor->index);
1118
1119         traits_write(pool, tag, c->static_traits);
1120     }
1121
1122     swf_SetU30(tag, file->scripts->num);
1123     for(t=0;t<file->scripts->num;t++) {
1124         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
1125         swf_SetU30(tag, s->method->index); //!=t!
1126         traits_write(pool, tag, s->traits);
1127     }
1128
1129     swf_SetU30(tag, file->method_bodies->num);
1130     for(t=0;t<file->method_bodies->num;t++) {
1131         abc_method_body_t*c = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1132         abc_method_t*m = c->method;
1133         swf_SetU30(tag, m->index);
1134
1135         //swf_SetU30(tag, c->old.max_stack);
1136         //swf_SetU30(tag, c->old.local_count);
1137         //swf_SetU30(tag, c->old.init_scope_depth);
1138         //swf_SetU30(tag, c->old.max_scope_depth);
1139
1140         swf_SetU30(tag, c->stats->max_stack);
1141
1142         int param_num = list_length(c->method->parameters)+1;
1143         if(c->method->flags&METHOD_NEED_REST)
1144             param_num++;
1145         if(param_num <= c->stats->local_count)
1146             swf_SetU30(tag, c->stats->local_count);
1147         else
1148             swf_SetU30(tag, param_num);
1149
1150         swf_SetU30(tag, c->init_scope_depth);
1151         swf_SetU30(tag, c->stats->max_scope_depth+
1152                         c->init_scope_depth);
1153
1154         code_write(tag, c->code, pool, file);
1155
1156         swf_SetU30(tag, list_length(c->exceptions));
1157         abc_exception_list_t*l = c->exceptions;
1158         while(l) {
1159             // warning: assumes "pos" in each code_t is up-to-date
1160             swf_SetU30(tag, l->abc_exception->from->pos);
1161             swf_SetU30(tag, l->abc_exception->to->pos);
1162             swf_SetU30(tag, l->abc_exception->target->pos);
1163             swf_SetU30(tag, pool_register_multiname(pool, l->abc_exception->exc_type));
1164             swf_SetU30(tag, pool_register_multiname(pool, l->abc_exception->var_name));
1165             l = l->next;
1166         }
1167
1168         traits_write(pool, tag, c->traits);
1169     }
1170
1171     /* free temporary codestat data again. Notice: If we were to write this
1172        file multiple times, this can also be shifted to abc_file_free() */
1173     for(t=0;t<file->method_bodies->num;t++) {
1174         abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1175         codestats_free(m->stats);m->stats=0;
1176     }
1177
1178     // --- start to write real tag --
1179
1180     tag = abctag;
1181
1182     if(tag->id == ST_DOABC) {
1183         swf_SetU32(tag, file->flags); // flags
1184         swf_SetString(tag, file->name);
1185     }
1186
1187     swf_SetU16(tag, 0x10); //version
1188     swf_SetU16(tag, 0x2e);
1189
1190     pool_write(pool, tag);
1191
1192     swf_SetBlock(tag, tmp->data, tmp->len);
1193
1194     swf_DeleteTag(0, tmp);
1195     pool_destroy(pool);
1196 }
1197
1198 void abc_file_free(abc_file_t*file)
1199 {
1200     int t;
1201     if(file->metadata) {
1202         for(t=0;t<file->metadata->num;t++) {
1203             array_t*items = (array_t*)array_getvalue(file->metadata, t);
1204             int s;
1205             for(s=0;s<items->num;s++) {
1206                 free(array_getvalue(items, s));
1207             }
1208             array_free(items);
1209         }
1210         array_free(file->metadata);file->metadata=0;
1211     }
1212
1213     for(t=0;t<file->methods->num;t++) {
1214         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
1215
1216         multiname_list_t*param = m->parameters;
1217         while(param) {
1218             multiname_destroy(param->multiname);param->multiname=0;
1219             param = param->next;
1220         }
1221         list_free(m->parameters);m->parameters=0;
1222
1223         constant_list_t*opt = m->optional_parameters;
1224         while(opt) {
1225             constant_free(opt->constant);opt->constant=0;
1226             opt = opt->next;
1227         }
1228         list_free(m->optional_parameters);m->optional_parameters=0;
1229
1230         if(m->name) {
1231             free((void*)m->name);m->name=0;
1232         }
1233         if(m->return_type) {
1234             multiname_destroy(m->return_type);
1235         }
1236         free(m);
1237     }
1238     array_free(file->methods);file->methods=0;
1239
1240     for(t=0;t<file->classes->num;t++) {
1241         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
1242         traits_free(cls->traits);cls->traits=0;
1243         traits_free(cls->static_traits);cls->static_traits=0;
1244
1245         if(cls->classname) {
1246             multiname_destroy(cls->classname);
1247         }
1248         if(cls->superclass) {
1249             multiname_destroy(cls->superclass);
1250         }
1251
1252         multiname_list_t*i = cls->interfaces;
1253         while(i) {
1254             multiname_destroy(i->multiname);i->multiname=0;
1255             i = i->next;
1256         }
1257         list_free(cls->interfaces);cls->interfaces=0;
1258
1259         if(cls->protectedNS) {
1260             namespace_destroy(cls->protectedNS);
1261         }
1262         free(cls);
1263     }
1264     array_free(file->classes);file->classes=0;
1265
1266     for(t=0;t<file->scripts->num;t++) {
1267         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
1268         traits_free(s->traits);s->traits=0;
1269         free(s);
1270     }
1271     array_free(file->scripts);file->scripts=0;
1272
1273     for(t=0;t<file->method_bodies->num;t++) {
1274         abc_method_body_t*body = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1275         code_free(body->code);body->code=0;
1276         traits_free(body->traits);body->traits=0;
1277
1278         abc_exception_list_t*ee = body->exceptions;
1279         while(ee) {
1280             abc_exception_t*e=ee->abc_exception;ee->abc_exception=0;
1281             e->from = e->to = e->target = 0;
1282             multiname_destroy(e->exc_type);e->exc_type=0;
1283             multiname_destroy(e->var_name);e->var_name=0;
1284             free(e);
1285             ee=ee->next;
1286         }
1287         list_free(body->exceptions);body->exceptions=0;
1288
1289         free(body);
1290     }
1291     array_free(file->method_bodies);file->method_bodies=0;
1292
1293     if(file->name) {
1294         free((void*)file->name);file->name=0;
1295     }
1296
1297     free(file);
1298 }
1299
1300 void swf_FreeABC(void*code)
1301 {
1302     abc_file_t*file= (abc_file_t*)code;
1303     abc_file_free(file);
1304 }
1305
1306 void swf_AddButtonLinks(SWF*swf, char stop_each_frame, char events)
1307 {
1308     int num_frames = 0;
1309     int has_buttons = 0;
1310     TAG*tag=swf->firstTag;
1311     while(tag) {
1312         if(tag->id == ST_SHOWFRAME)
1313             num_frames++;
1314         if(tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2)
1315             has_buttons = 1;
1316         tag = tag->next;
1317     }
1318
1319     abc_file_t*file = abc_file_new();
1320     abc_method_body_t*c = 0;
1321
1322     abc_class_t*cls = abc_class_new2(file, "rfx::MainTimeline", "flash.display::MovieClip");
1323     abc_class_protectedNS(cls, "rfx:MainTimeline");
1324
1325     TAG*abctag = swf_InsertTagBefore(swf, swf->firstTag, ST_DOABC);
1326
1327     tag = swf_InsertTag(abctag, ST_SYMBOLCLASS);
1328     swf_SetU16(tag, 1);
1329     swf_SetU16(tag, 0);
1330     swf_SetString(tag, "rfx.MainTimeline");
1331
1332     c = abc_class_getstaticconstructor(cls, 0)->body;
1333     c->old.max_stack = 1;
1334     c->old.local_count = 1;
1335     c->old.init_scope_depth = 9;
1336     c->old.max_scope_depth = 10;
1337
1338     __ getlocal_0(c);
1339     __ pushscope(c);
1340     __ returnvoid(c);
1341
1342     c = abc_class_getconstructor(cls, 0)->body;
1343     c->old.max_stack = 3;
1344     c->old.local_count = 1;
1345     c->old.init_scope_depth = 10;
1346     c->old.max_scope_depth = 11;
1347
1348     debugfile(c, "constructor.as");
1349
1350     __ getlocal_0(c);
1351     __ pushscope(c);
1352
1353     __ getlocal_0(c);
1354     __ constructsuper(c,0);
1355
1356     __ getlex(c, "[package]flash.system::Security");
1357     __ pushstring(c, "*");
1358     __ callpropvoid(c, "[package]::allowDomain", 1);
1359
1360     if(stop_each_frame || has_buttons) {
1361         int frame = 0;
1362         tag = swf->firstTag;
1363         abc_method_body_t*f = 0; //frame script
1364         while(tag && tag->id!=ST_END) {
1365             char framename[80];
1366             char needs_framescript=0;
1367             char buttonname[80];
1368             char functionname[80];
1369             sprintf(framename, "[packageinternal]rfx::frame%d", frame);
1370
1371             if(!f && (tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2 || stop_each_frame)) {
1372                 /* make the contructor add a frame script */
1373                 __ findpropstrict(c,"[package]::addFrameScript");
1374                 __ pushbyte(c,frame);
1375                 __ getlex(c,framename);
1376                 __ callpropvoid(c,"[package]::addFrameScript",2);
1377
1378                 f = abc_class_method(cls, 0, multiname_fromstring(framename))->body;
1379                 f->old.max_stack = 3;
1380                 f->old.local_count = 1;
1381                 f->old.init_scope_depth = 10;
1382                 f->old.max_scope_depth = 11;
1383                 __ debugfile(f, "framescript.as");
1384                 __ debugline(f, 1);
1385                 __ getlocal_0(f);
1386                 __ pushscope(f);
1387                 if(stop_each_frame) {
1388                     __ findpropstrict(f, "[package]::stop");
1389                     __ callpropvoid(f, "[package]::stop", 0);
1390                 }
1391             }
1392
1393             if(tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2) {
1394                 U16 id = swf_GetDefineID(tag);
1395                 sprintf(buttonname, "::button%d", swf_GetDefineID(tag));
1396                 __ getlex(f,buttonname);
1397                 __ getlex(f,"flash.events::MouseEvent");
1398                 __ getproperty(f, "::CLICK");
1399                 sprintf(functionname, "::clickbutton%d", swf_GetDefineID(tag));
1400                 __ getlex(f,functionname);
1401                 __ callpropvoid(f, "::addEventListener" ,2);
1402
1403                 needs_framescript = 1;
1404
1405                 abc_method_body_t*h =
1406                     abc_class_method(cls, 0, multiname_fromstring(functionname))->body;
1407                 list_append(h->method->parameters, multiname_fromstring("flash.events::MouseEvent"));
1408
1409                 h->old.max_stack = 6;
1410                 h->old.local_count = 2;
1411                 h->old.init_scope_depth = 10;
1412                 h->old.max_scope_depth = 11;
1413                 __ getlocal_0(h);
1414                 __ pushscope(h);
1415
1416                 ActionTAG*oldaction = swf_ButtonGetAction(tag);
1417                 if(oldaction && oldaction->op == ACTION__GOTOFRAME) {
1418                     int framenr = GET16(oldaction->data);
1419                     if(framenr>254) {
1420                         fprintf(stderr, "Warning: Couldn't translate jump to frame %d to flash 9 actionscript\n", framenr);
1421                     }
1422                     if(!events) {
1423                         __ findpropstrict(h,"[package]::gotoAndStop");
1424                         __ pushbyte(h,framenr+1);
1425                         __ callpropvoid(h,"[package]::gotoAndStop", 1);
1426                     } else {
1427                         char framename[80];
1428                         sprintf(framename, "frame%d", framenr);
1429                         __ getlocal_0(h); //this
1430                         __ findpropstrict(h, "[package]flash.events::TextEvent");
1431                         __ pushstring(h, "link");
1432                         __ pushtrue(h);
1433                         __ pushtrue(h);
1434                         __ pushstring(h, framename);
1435                         __ constructprop(h,"[package]flash.events::TextEvent", 4);
1436                         __ callpropvoid(h,"[package]::dispatchEvent", 1);
1437                     }
1438                 } else if(oldaction && oldaction->op == ACTION__GETURL) {
1439                     if(!events) {
1440                         __ findpropstrict(h,"flash.net::navigateToURL");
1441                         __ findpropstrict(h,"flash.net::URLRequest");
1442                         // TODO: target _blank
1443                         __ pushstring(h,oldaction->data); //url
1444                         __ constructprop(h,"flash.net::URLRequest", 1);
1445                         __ callpropvoid(h,"flash.net::navigateToURL", 1);
1446                     } else {
1447                         __ getlocal_0(h); //this
1448                         __ findpropstrict(h, "[package]flash.events::TextEvent");
1449                         __ pushstring(h, "link");
1450                         __ pushtrue(h);
1451                         __ pushtrue(h);
1452                         __ pushstring(h,oldaction->data); //url
1453                         __ constructprop(h,"[package]flash.events::TextEvent", 4);
1454                         __ callpropvoid(h,"[package]::dispatchEvent", 1);
1455                     }
1456                 } else if(oldaction) {
1457                     fprintf(stderr, "Warning: Couldn't translate button code of button %d to flash 9 abc action\n", id);
1458                 }
1459                 __ returnvoid(h);
1460                 swf_ActionFree(oldaction);
1461             }
1462             if(tag->id == ST_SHOWFRAME) {
1463                 if(f) {
1464                     __ returnvoid(f);
1465                     f = 0;
1466                 }
1467                 frame++;
1468             }
1469             tag = tag->next;
1470         }
1471         if(f) {
1472             __ returnvoid(f);
1473         }
1474     }
1475     __ returnvoid(c);
1476
1477     tag = swf->firstTag;
1478     while(tag) {
1479         if(tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2) {
1480             char buttonname[80];
1481             sprintf(buttonname, "::button%d", swf_GetDefineID(tag));
1482             multiname_t*s = multiname_fromstring(buttonname);
1483             //abc_class_slot(cls, multiname_fromstring(buttonname), s);
1484             abc_class_slot(cls, multiname_fromstring(buttonname),
1485                                 multiname_fromstring("flash.display::SimpleButton"));
1486         }
1487         tag = tag->next;
1488     }
1489
1490
1491     abc_script_t*s = abc_initscript(file);
1492     c = s->method->body;
1493     c->old.max_stack = 2;
1494     c->old.local_count = 1;
1495     c->old.init_scope_depth = 1;
1496     c->old.max_scope_depth = 9;
1497
1498     __ getlocal_0(c);
1499     __ pushscope(c);
1500     __ getscopeobject(c, 0);
1501     __ getlex(c,"::Object");
1502     __ pushscope(c);
1503     __ getlex(c,"flash.events::EventDispatcher");
1504     __ pushscope(c);
1505     __ getlex(c,"flash.display::DisplayObject");
1506     __ pushscope(c);
1507     __ getlex(c,"flash.display::InteractiveObject");
1508     __ pushscope(c);
1509     __ getlex(c,"flash.display::DisplayObjectContainer");
1510     __ pushscope(c);
1511     __ getlex(c,"flash.display::Sprite");
1512     __ pushscope(c);
1513     __ getlex(c,"flash.display::MovieClip");
1514     __ pushscope(c);
1515     __ getlex(c,"flash.display::MovieClip");
1516     __ newclass(c,cls);
1517     __ popscope(c);
1518     __ popscope(c);
1519     __ popscope(c);
1520     __ popscope(c);
1521     __ popscope(c);
1522     __ popscope(c);
1523     __ popscope(c);
1524     __ initproperty(c,"rfx::MainTimeline");
1525     __ returnvoid(c);
1526
1527     //abc_method_body_addClassTrait(c, "rfx:MainTimeline", 1, cls);
1528     multiname_t*classname = multiname_fromstring("rfx::MainTimeline");
1529     abc_initscript_addClassTrait(s, classname, cls);
1530     multiname_destroy(classname);
1531
1532     swf_WriteABC(abctag, file);
1533 }
1534
1535 TAG*swf_AddAS3FontDefine(TAG*tag, U16 id, char*fontname)
1536 {
1537     tag = swf_InsertTag(tag, ST_DOABC);
1538     abc_file_t*file = abc_file_new();
1539
1540     //abc_class_t*cls = abc_class_new2(file, fontname, "flash.display::MovieClip");
1541     //abc_class_slot(cls, multiname_fromstring(fontname), multiname_fromstring("flash.text::Font"));
1542
1543     abc_class_t*cls = abc_class_new2(file, fontname, "flash.text::Font");
1544
1545     abc_script_t*s = abc_initscript(file);
1546     code_t*c = s->method->body->code;
1547     c = abc_getlocal_0(c);
1548     c = abc_pushscope(c);
1549     c = abc_getscopeobject(c, 0);
1550     c = abc_getlex(c,"flash.text::Font");
1551     c = abc_pushscope(c);
1552     c = abc_getlex(c,"flash.text::Font");
1553     c = abc_newclass(c,cls);
1554     c = abc_popscope(c);
1555     c = abc_initproperty(c, fontname);
1556     c = abc_returnvoid(c);
1557     s->method->body->code = c;
1558
1559     abc_initscript_addClassTrait(s, multiname_fromstring(fontname), cls);
1560     swf_WriteABC(tag, file);
1561
1562     tag = swf_InsertTag(tag, ST_SYMBOLCLASS);
1563     swf_SetU16(tag, 1);
1564     swf_SetU16(tag, id);
1565     swf_SetString(tag, fontname);
1566
1567     return tag;
1568 }
1569
1570