3 Routines for handling Flash2 AVM2 ABC Actionscript
5 Extension module for the rfxswf library.
6 Part of the swftools package.
8 Copyright (c) 2008 Matthias Kramm <kramm@quiss.org>
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.
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.
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 */
26 #include "../rfxswf.h"
30 char stringbuffer[2048];
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);
40 /* TODO: switch to a datastructure with just values */
43 static char* params_tostring(multiname_list_t*list)
46 int n = list_length(list);
47 char**names = (char**)malloc(sizeof(char*)*n);
53 names[n] = multiname_tostring(l->multiname);
54 size += strlen(names[n]) + 2;
58 char* params = malloc(size+15);
67 strcat(params, names[n]);
75 sprintf(num, "[%d params]", n);
76 strcat(params, num);*/
85 static void parse_metadata(TAG*tag, abc_file_t*file, pool_t*pool)
88 int num_metadata = swf_GetU30(tag);
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);
95 DEBUG printf(" %s\n", entry_name);
96 array_t*items = array_new();
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));
105 array_append(file->metadata, entry_name, items);
109 void swf_CopyData(TAG*to, TAG*from, int len)
111 unsigned char*data = malloc(len);
112 swf_GetBlock(from, data, len);
113 swf_SetBlock(to, data, len);
117 abc_file_t*abc_file_new()
119 abc_file_t*f = malloc(sizeof(abc_file_t));
120 memset(f, 0, sizeof(abc_file_t));
121 f->metadata = array_new();
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;
132 abc_class_t* abc_class_new(abc_file_t*file, multiname_t*classname, multiname_t*superclass) {
135 array_append(file->classes, NO_KEY, c);
138 c->classname = multiname_clone(classname);
139 c->superclass = multiname_clone(superclass);
142 c->static_constructor = 0;
143 c->traits = list_new();
146 abc_class_t* abc_class_new2(abc_file_t*pool, char*classname, char*superclass)
148 return abc_class_new(pool, multiname_fromstring(classname), multiname_fromstring(superclass));
151 void abc_class_sealed(abc_class_t*c)
153 c->flags |= CLASS_SEALED;
155 void abc_class_final(abc_class_t*c)
157 c->flags |= CLASS_FINAL;
159 void abc_class_interface(abc_class_t*c)
161 c->flags |= CLASS_INTERFACE;
163 void abc_class_protectedNS(abc_class_t*c, char*namespace)
165 c->protectedNS = namespace_new_protected(namespace);
166 c->flags |= CLASS_PROTECTED_NS;
168 void abc_class_add_interface(abc_class_t*c, multiname_t*interface)
170 list_append(c->interfaces, multiname_clone(interface));
173 static abc_method_t* add_method(abc_file_t*file, abc_class_t*cls, multiname_t*returntype, char body)
175 /* construct method object */
177 m->index = array_length(file->methods);
178 array_append(file->methods, NO_KEY, m);
179 m->return_type = returntype;
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);
187 c->traits = list_new();
190 /* crosslink the two objects */
198 abc_method_t* abc_class_constructor(abc_class_t*cls, multiname_t*returntype)
200 abc_method_t* m = add_method(cls->file, cls, returntype, 1);
201 cls->constructor = m;
205 abc_method_t* abc_class_staticconstructor(abc_class_t*cls, multiname_t*returntype)
207 abc_method_t* m = add_method(cls->file, cls, returntype, 1);
208 cls->static_constructor = m;
212 trait_t*trait_new(int type, multiname_t*name, int data1, int data2, constant_t*v)
214 trait_t*trait = malloc(sizeof(trait_t));
215 memset(trait, 0, sizeof(trait_t));
216 trait->kind = type&0x0f;
217 trait->attributes = type&0xf0;
219 trait->data1 = data1;
220 trait->data2 = data2;
224 trait_t*trait_new_member(multiname_t*type, multiname_t*name,constant_t*v)
226 int kind = TRAIT_SLOT;
227 trait_t*trait = malloc(sizeof(trait_t));
228 memset(trait, 0, sizeof(trait_t));
229 trait->kind = kind&0x0f;
230 trait->attributes = kind&0xf0;
232 trait->type_name = type;
235 trait_t*trait_new_method(multiname_t*name, abc_method_t*m)
237 int type = TRAIT_METHOD;
238 trait_t*trait = malloc(sizeof(trait_t));
239 memset(trait, 0, sizeof(trait_t));
240 trait->kind = type&0x0f;
241 trait->attributes = type&0xf0;
247 abc_method_t* abc_class_method(abc_class_t*cls, multiname_t*returntype, multiname_t*name)
249 abc_file_t*file = cls->file;
250 abc_method_t* m = add_method(cls->file, cls, returntype, !(cls->flags&CLASS_INTERFACE));
251 m->trait = trait_new_method(multiname_clone(name), m);
252 /* start assigning traits at position #1.
253 Weird things happen when assigning slot 0- slot 0 and 1 seem
255 m->trait->slot_id = list_length(cls->traits)+1;
256 list_append(cls->traits, m->trait);
259 abc_method_t* abc_class_staticmethod(abc_class_t*cls, multiname_t*returntype, multiname_t*name)
261 abc_file_t*file = cls->file;
262 abc_method_t* m = add_method(cls->file, cls, returntype, !(cls->flags&CLASS_INTERFACE));
263 m->trait = trait_new_method(multiname_clone(name), m);
264 m->trait->slot_id = list_length(cls->static_traits)+1;
265 list_append(cls->static_traits, m->trait);
269 trait_t* abc_class_slot(abc_class_t*cls, multiname_t*name, multiname_t*type)
271 abc_file_t*file = cls->file;
272 multiname_t*m_name = multiname_clone(name);
273 multiname_t*m_type = multiname_clone(type);
274 trait_t*t = trait_new_member(m_type, m_name, 0);
275 t->slot_id = list_length(cls->traits)+1;
276 list_append(cls->traits, t);
279 trait_t* abc_class_staticslot(abc_class_t*cls, multiname_t*name, multiname_t*type)
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(m_type, m_name, 0);
285 t->slot_id = list_length(cls->static_traits)+1;
286 list_append(cls->static_traits, t);
291 trait_t* abc_class_find_slotid(abc_class_t*cls, int slotid)
295 for(l=cls->traits;l;l=l->next) {
296 if(l->trait->slot_id==slotid) {
304 void abc_method_body_addClassTrait(abc_method_body_t*code, char*multiname, int slotid, abc_class_t*cls)
306 abc_file_t*file = code->file;
307 multiname_t*m = multiname_fromstring(multiname);
308 trait_t*trait = trait_new(TRAIT_CLASS, m, slotid, 0, 0);
310 list_append(code->traits, trait);
313 /* notice: traits of a method (body) belonging to an init script
314 and traits of the init script are *not* the same thing */
315 int abc_initscript_addClassTrait(abc_script_t*script, multiname_t*multiname, abc_class_t*cls)
317 abc_file_t*file = script->file;
318 multiname_t*m = multiname_clone(multiname);
319 int slotid = list_length(script->traits)+1;
320 trait_t*trait = trait_new(TRAIT_CLASS, m, slotid, 0, 0);
322 list_append(script->traits, trait);
326 abc_script_t* abc_initscript(abc_file_t*file, multiname_t*returntype)
328 abc_method_t*m = add_method(file, 0, returntype, 1);
329 abc_script_t* s = malloc(sizeof(abc_script_t));
331 s->traits = list_new();
333 array_append(file->scripts, NO_KEY, s);
337 static void traits_dump(FILE*fo, const char*prefix, trait_list_t*traits, abc_file_t*file);
339 static void dump_method(FILE*fo, const char*prefix, const char*type, const char*name, abc_method_t*m, abc_file_t*file)
341 char*return_type = 0;
343 return_type = multiname_tostring(m->return_type);
345 return_type = strdup("void");
346 char*paramstr = params_tostring(m->parameters);
347 fprintf(fo, "%s%s %s %s=%s %s (%d params, %d optional)\n", prefix, type, return_type, name, m->name, paramstr,
348 list_length(m->parameters),
349 list_length(m->optional_parameters)
351 free(paramstr);paramstr=0;
352 free(return_type);return_type=0;
354 abc_method_body_t*c = m->body;
359 fprintf(fo, "%s[stack:%d locals:%d scope:%d-%d flags:",
360 prefix, c->old.max_stack, c->old.local_count, c->old.init_scope_depth,
361 c->old.max_scope_depth);
364 int flags = c->method->flags;
365 if(flags&METHOD_NEED_ARGUMENTS) {fprintf(fo, " need_arguments");flags&=~METHOD_NEED_ARGUMENTS;}
366 if(flags&METHOD_NEED_ACTIVATION) {fprintf(fo, " need_activation");flags&=~METHOD_NEED_ACTIVATION;}
367 if(flags&METHOD_NEED_REST) {fprintf(fo, " need_rest");flags&=~METHOD_NEED_REST;}
368 if(flags&METHOD_HAS_OPTIONAL) {fprintf(fo, " has_optional");flags&=~METHOD_HAS_OPTIONAL;}
369 if(flags&METHOD_SET_DXNS) {fprintf(fo, " set_dxns");flags&=~METHOD_SET_DXNS;}
370 if(flags&METHOD_HAS_PARAM_NAMES) {fprintf(fo, " has_param_names");flags&=~METHOD_HAS_PARAM_NAMES;}
371 if(flags) fprintf(fo, " %02x", flags);
375 fprintf(fo, " slot:%d", m->trait->slot_id);
381 sprintf(prefix2, "%s ", prefix);
383 traits_dump(fo, prefix, c->traits, file);
384 fprintf(fo, "%s{\n", prefix);
385 code_dump(c->code, c->exceptions, file, prefix2, fo);
386 fprintf(fo, "%s}\n\n", prefix);
389 static void traits_free(trait_list_t*traits)
391 trait_list_t*t = traits;
394 multiname_destroy(t->trait->name);t->trait->name = 0;
396 if(t->trait->kind == TRAIT_SLOT || t->trait->kind == TRAIT_CONST) {
397 multiname_destroy(t->trait->type_name);
399 if(t->trait->value) {
400 constant_free(t->trait->value);t->trait->value = 0;
402 free(t->trait);t->trait = 0;
408 static char trait_is_method(trait_t*trait)
410 return (trait->kind == TRAIT_METHOD || trait->kind == TRAIT_GETTER ||
411 trait->kind == TRAIT_SETTER || trait->kind == TRAIT_FUNCTION);
414 static trait_list_t* traits_parse(TAG*tag, pool_t*pool, abc_file_t*file)
416 int num_traits = swf_GetU30(tag);
417 trait_list_t*traits = list_new();
420 DEBUG printf("%d traits\n", num_traits);
423 for(t=0;t<num_traits;t++) {
425 list_append(traits, trait);
427 trait->name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag))); // always a QName (ns,name)
430 DEBUG name = multiname_tostring(trait->name);
431 U8 kind = swf_GetU8(tag);
432 U8 attributes = kind&0xf0;
435 trait->attributes = attributes;
436 DEBUG printf(" trait %d) %s type=%02x\n", t, name, kind);
437 if(kind == TRAIT_METHOD || kind == TRAIT_GETTER || kind == TRAIT_SETTER) { // method / getter / setter
438 trait->disp_id = swf_GetU30(tag);
439 trait->method = (abc_method_t*)array_getvalue(file->methods, swf_GetU30(tag));
440 trait->method->trait = trait;
441 DEBUG printf(" method/getter/setter\n");
442 } else if(kind == TRAIT_FUNCTION) { // function
443 trait->slot_id = swf_GetU30(tag);
444 trait->method = (abc_method_t*)array_getvalue(file->methods, swf_GetU30(tag));
445 trait->method->trait = trait;
446 } else if(kind == TRAIT_CLASS) { // class
447 trait->slot_id = swf_GetU30(tag);
448 trait->cls = (abc_class_t*)array_getvalue(file->classes, swf_GetU30(tag));
449 DEBUG printf(" class %s %d %d\n", name, trait->slot_id, trait->cls);
450 } else if(kind == TRAIT_SLOT || kind == TRAIT_CONST) { // slot, const
451 /* a slot is a variable in a class that is shared amonst all instances
452 of the same type, but which has a unique location in each object
453 (in other words, slots are non-static, traits are static)
455 trait->slot_id = swf_GetU30(tag);
456 trait->type_name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
457 int vindex = swf_GetU30(tag);
459 int vkind = swf_GetU8(tag);
460 trait->value = constant_fromindex(pool, vindex, vkind);
462 DEBUG printf(" slot %s %d %s (%s)\n", name, trait->slot_id, trait->type_name->name, constant_tostring(trait->value));
464 fprintf(stderr, "Can't parse trait type %d\n", kind);
466 if(attributes&0x40) {
467 int num = swf_GetU30(tag);
470 swf_GetU30(tag); //index into metadata array
477 void traits_skip(TAG*tag)
479 int num_traits = swf_GetU30(tag);
481 for(t=0;t<num_traits;t++) {
483 U8 kind = swf_GetU8(tag);
484 U8 attributes = kind&0xf0;
488 if(kind == TRAIT_SLOT || kind == TRAIT_CONST) {
489 if(swf_GetU30(tag)) swf_GetU8(tag);
490 } else if(kind>TRAIT_CONST) {
491 fprintf(stderr, "Can't parse trait type %d\n", kind);
493 if(attributes&0x40) {
494 int s, num = swf_GetU30(tag);
495 for(s=0;s<num;s++) swf_GetU30(tag);
501 static void traits_write(pool_t*pool, TAG*tag, trait_list_t*traits)
507 swf_SetU30(tag, list_length(traits));
511 trait_t*trait = traits->trait;
513 swf_SetU30(tag, pool_register_multiname(pool, trait->name));
514 swf_SetU8(tag, trait->kind|trait->attributes);
516 swf_SetU30(tag, trait->data1);
518 if(trait->kind == TRAIT_CLASS) {
519 swf_SetU30(tag, trait->cls->index);
520 } else if(trait->kind == TRAIT_GETTER ||
521 trait->kind == TRAIT_SETTER ||
522 trait->kind == TRAIT_METHOD) {
523 swf_SetU30(tag, trait->method->index);
524 } else if(trait->kind == TRAIT_SLOT ||
525 trait->kind == TRAIT_CONST) {
526 int index = pool_register_multiname(pool, trait->type_name);
527 swf_SetU30(tag, index);
529 swf_SetU30(tag, trait->data2);
532 if(trait->kind == TRAIT_SLOT || trait->kind == TRAIT_CONST) {
533 int vindex = constant_get_index(pool, trait->value);
534 swf_SetU30(tag, vindex);
536 swf_SetU8(tag, trait->value->type);
539 if(trait->attributes&0x40) {
543 traits = traits->next;
548 static void traits_dump(FILE*fo, const char*prefix, trait_list_t*traits, abc_file_t*file)
552 trait_t*trait = traits->trait;
553 char*name = multiname_tostring(trait->name);
554 U8 kind = trait->kind;
555 U8 attributes = trait->attributes;
556 if(kind == TRAIT_METHOD) {
557 abc_method_t*m = trait->method;
558 dump_method(fo, prefix, "method", name, m, file);
559 } else if(kind == TRAIT_GETTER) {
560 abc_method_t*m = trait->method;
561 dump_method(fo, prefix, "getter", name, m, file);
562 } else if(kind == TRAIT_SETTER) {
563 abc_method_t*m = trait->method;
564 dump_method(fo, prefix, "setter", name, m, file);
565 } else if(kind == TRAIT_FUNCTION) { // function
566 abc_method_t*m = trait->method;
567 dump_method(fo, prefix, "function", name, m, file);
568 } else if(kind == TRAIT_CLASS) { // class
569 abc_class_t*cls = trait->cls;
571 fprintf(fo, "%sslot %d: class %s=00000000\n", prefix, trait->slot_id, name);
573 fprintf(fo, "%sslot %d: class %s=%s\n", prefix, trait->slot_id, name, cls->classname->name);
575 } else if(kind == TRAIT_SLOT || kind == TRAIT_CONST) { // slot, const
576 int slot_id = trait->slot_id;
577 char*type_name = multiname_tostring(trait->type_name);
578 char*value = constant_tostring(trait->value);
579 fprintf(fo, "%sslot %d: %s%s %s %s %s\n", prefix, trait->slot_id,
580 kind==TRAIT_CONST?"const ":"", type_name, name,
581 value?"=":"", value);
582 if(value) free(value);
585 fprintf(fo, "%s can't dump trait type %d\n", prefix, kind);
592 void* swf_DumpABC(FILE*fo, void*code, char*prefix)
594 abc_file_t* file = (abc_file_t*)code;
597 fprintf(fo, "%s#\n", prefix);
598 fprintf(fo, "%s#name: %s\n", prefix, file->name);
599 fprintf(fo, "%s#\n", prefix);
603 for(t=0;t<file->metadata->num;t++) {
604 const char*entry_name = array_getkey(file->metadata, t);
605 fprintf(fo, "%s#Metadata \"%s\":\n", prefix, entry_name);
607 array_t*items = (array_t*)array_getvalue(file->metadata, t);
608 for(s=0;s<items->num;s++) {
609 fprintf(fo, "%s# %s=%s\n", prefix, array_getkey(items, s), array_getvalue(items,s));
611 fprintf(fo, "%s#\n", prefix);
614 for(t=0;t<file->classes->num;t++) {
615 abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
617 sprintf(prefix2, "%s ", prefix);
619 fprintf(fo, "%s", prefix);
620 if(cls->flags&1) fprintf(fo, "sealed ");
621 if(cls->flags&2) fprintf(fo, "final ");
622 if(cls->flags&4) fprintf(fo, "interface ");
624 char*s = namespace_tostring(cls->protectedNS);
625 fprintf(fo, "protectedNS(%s) ", s);
629 char*classname = multiname_tostring(cls->classname);
630 fprintf(fo, "class %s", classname);
632 if(cls->superclass) {
633 char*supername = multiname_tostring(cls->superclass);
634 fprintf(fo, " extends %s", supername);
636 multiname_list_t*ilist = cls->interfaces;
638 fprintf(fo, " implements");
640 char*s = multiname_tostring(ilist->multiname);
641 fprintf(fo, " %s", s);
648 fprintf(fo, "extra flags=%02x\n", cls->flags&0xf0);
649 fprintf(fo, "%s{\n", prefix);
651 if(cls->static_constructor)
652 dump_method(fo, prefix2,"staticconstructor", "", cls->static_constructor, file);
653 traits_dump(fo, prefix2, cls->static_traits, file);
655 char*n = multiname_tostring(cls->classname);
657 dump_method(fo, prefix2, "constructor", n, cls->constructor, file);
659 traits_dump(fo, prefix2,cls->traits, file);
660 fprintf(fo, "%s}\n", prefix);
663 fprintf(fo, "%s\n", prefix);
665 for(t=0;t<file->scripts->num;t++) {
666 abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
667 dump_method(fo, prefix,"initmethod", "init", s->method, file);
668 traits_dump(fo, prefix, s->traits, file);
673 void* swf_ReadABC(TAG*tag)
675 abc_file_t* file = abc_file_new();
676 pool_t*pool = pool_new();
678 swf_SetTagPos(tag, 0);
680 if(tag->id == ST_DOABC) {
681 U32 abcflags = swf_GetU32(tag);
682 DEBUG printf("flags=%08x\n", abcflags);
683 char*name= swf_GetString(tag);
684 file->name = (name&&name[0])?strdup(name):0;
686 U32 version = swf_GetU32(tag);
687 if(version!=0x002e0010) {
688 fprintf(stderr, "Warning: unknown AVM2 version %08x\n", version);
691 pool_read(pool, tag);
693 int num_methods = swf_GetU30(tag);
694 DEBUG printf("%d methods\n", num_methods);
695 for(t=0;t<num_methods;t++) {
697 int param_count = swf_GetU30(tag);
698 int return_type_index = swf_GetU30(tag);
699 if(return_type_index)
700 m->return_type = multiname_clone(pool_lookup_multiname(pool, return_type_index));
705 for(s=0;s<param_count;s++) {
706 int type_index = swf_GetU30(tag);
708 /* type_index might be 0, which probably means "..." (varargs) */
709 multiname_t*param = type_index?multiname_clone(pool_lookup_multiname(pool, type_index)):0;
710 list_append(m->parameters, param);
713 int namenr = swf_GetU30(tag);
715 m->name = strdup(pool_lookup_string(pool, namenr));
717 m->name = strdup("");
719 m->flags = swf_GetU8(tag);
721 DEBUG printf("method %d) %s %s flags=%02x\n", t, m->name, params_tostring(m->parameters), m->flags);
724 m->optional_parameters = list_new();
725 int num = swf_GetU30(tag);
728 int vindex = swf_GetU30(tag);
729 U8 vkind = swf_GetU8(tag); // specifies index type for "val"
730 constant_t*c = constant_fromindex(pool, vindex, vkind);
731 list_append(m->optional_parameters, c);
735 /* debug information- not used by avm2 */
736 multiname_list_t*l = m->parameters;
738 const char*name = pool_lookup_string(pool, swf_GetU30(tag));
742 m->index = array_length(file->methods);
743 array_append(file->methods, NO_KEY, m);
746 parse_metadata(tag, file, pool);
748 /* skip classes, and scripts for now, and do the real parsing later */
749 int num_classes = swf_GetU30(tag);
750 int classes_pos = tag->pos;
751 DEBUG printf("%d classes\n", num_classes);
752 for(t=0;t<num_classes;t++) {
753 abc_class_t*cls = malloc(sizeof(abc_class_t));
754 memset(cls, 0, sizeof(abc_class_t));
756 swf_GetU30(tag); //classname
757 swf_GetU30(tag); //supername
759 array_append(file->classes, NO_KEY, cls);
761 cls->flags = swf_GetU8(tag);
762 DEBUG printf("class %d %02x\n", t, cls->flags);
764 swf_GetU30(tag); //protectedNS
766 int inum = swf_GetU30(tag); //interface count
768 for(s=0;s<inum;s++) {
769 int interface_index = swf_GetU30(tag);
770 multiname_t* m = multiname_clone(pool_lookup_multiname(pool, interface_index));
771 list_append(cls->interfaces, m);
772 DEBUG printf(" class %d interface: %s\n", t, m->name);
775 int iinit = swf_GetU30(tag); //iinit
776 DEBUG printf("--iinit-->%d\n", iinit);
779 for(t=0;t<num_classes;t++) {
780 abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
781 int cinit = swf_GetU30(tag);
782 DEBUG printf("--cinit(%d)-->%d\n", t, cinit);
783 cls->static_constructor = (abc_method_t*)array_getvalue(file->methods, cinit);
786 int num_scripts = swf_GetU30(tag);
787 DEBUG printf("%d scripts\n", num_scripts);
788 for(t=0;t<num_scripts;t++) {
789 int init = swf_GetU30(tag);
793 int num_method_bodies = swf_GetU30(tag);
794 DEBUG printf("%d method bodies\n", num_method_bodies);
795 for(t=0;t<num_method_bodies;t++) {
796 int methodnr = swf_GetU30(tag);
797 if(methodnr >= file->methods->num) {
798 printf("Invalid method number: %d\n", methodnr);
801 abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, methodnr);
802 abc_method_body_t*c = malloc(sizeof(abc_method_body_t));
803 memset(c, 0, sizeof(abc_method_body_t));
804 c->old.max_stack = swf_GetU30(tag);
805 c->old.local_count = swf_GetU30(tag);
806 c->old.init_scope_depth = swf_GetU30(tag);
807 c->old.max_scope_depth = swf_GetU30(tag);
809 c->init_scope_depth = c->old.init_scope_depth;
810 int code_length = swf_GetU30(tag);
815 int pos = tag->pos + code_length;
816 codelookup_t*codelookup = 0;
817 c->code = code_parse(tag, code_length, file, pool, &codelookup);
820 int exception_count = swf_GetU30(tag);
822 c->exceptions = list_new();
823 for(s=0;s<exception_count;s++) {
824 abc_exception_t*e = malloc(sizeof(abc_exception_t));
826 e->from = code_atposition(codelookup, swf_GetU30(tag));
827 e->to = code_atposition(codelookup, swf_GetU30(tag));
828 e->target = code_atposition(codelookup, swf_GetU30(tag));
830 e->exc_type = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
831 e->var_name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
832 //e->var_name = pool_lookup_string(pool, swf_GetU30(tag));
833 //if(e->var_name) e->var_name = strdup(e->var_name);
834 list_append(c->exceptions, e);
836 codelookup_free(codelookup);
837 c->traits = traits_parse(tag, pool, file);
839 DEBUG printf("method_body %d) (method %d), %d bytes of code\n", t, methodnr, code_length);
841 array_append(file->method_bodies, NO_KEY, c);
843 if(tag->len - tag->pos) {
844 fprintf(stderr, "%d unparsed bytes remaining in ABC block\n", tag->len - tag->pos);
848 swf_SetTagPos(tag, classes_pos);
849 for(t=0;t<num_classes;t++) {
850 abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
852 int classname_index = swf_GetU30(tag);
853 int superclass_index = swf_GetU30(tag);
854 cls->classname = multiname_clone(pool_lookup_multiname(pool, classname_index));
855 cls->superclass = multiname_clone(pool_lookup_multiname(pool, superclass_index));
856 cls->flags = swf_GetU8(tag);
859 int ns_index = swf_GetU30(tag);
860 cls->protectedNS = namespace_clone(pool_lookup_namespace(pool, ns_index));
863 int num_interfaces = swf_GetU30(tag); //interface count
865 for(s=0;s<num_interfaces;s++) {
868 int iinit = swf_GetU30(tag);
869 cls->constructor = (abc_method_t*)array_getvalue(file->methods, iinit);
870 cls->traits = traits_parse(tag, pool, file);
872 for(t=0;t<num_classes;t++) {
873 abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
875 swf_GetU30(tag); // cindex
876 cls->static_traits = traits_parse(tag, pool, file);
878 int num_scripts2 = swf_GetU30(tag);
879 for(t=0;t<num_scripts2;t++) {
880 int init = swf_GetU30(tag);
881 abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, init);
883 abc_script_t*s = malloc(sizeof(abc_script_t));
884 memset(s, 0, sizeof(abc_script_t));
886 s->traits = traits_parse(tag, pool, file);
887 array_append(file->scripts, NO_KEY, s);
894 void swf_WriteABC(TAG*abctag, void*code)
896 abc_file_t*file = (abc_file_t*)code;
897 pool_t*pool = pool_new();
899 TAG*tmp = swf_InsertTag(0,0);
903 /* add method bodies where needed */
904 for(t=0;t<file->classes->num;t++) {
905 abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
906 if(!c->constructor) {
907 if(!(c->flags&CLASS_INTERFACE)) {
908 NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
909 NEW(abc_method_body_t,body);array_append(file->method_bodies, NO_KEY, body);
910 // don't bother to set m->index
911 body->method = m; m->body = body;
915 NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
919 if(!c->static_constructor) {
920 NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
921 NEW(abc_method_body_t,body);array_append(file->method_bodies, NO_KEY, body);
922 body->method = m; m->body = body;
924 c->static_constructor = m;
929 swf_SetU30(tag, file->methods->num);
930 /* enumerate classes, methods and method bodies */
931 for(t=0;t<file->methods->num;t++) {
932 abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
935 for(t=0;t<file->classes->num;t++) {
936 abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
939 for(t=0;t<file->method_bodies->num;t++) {
940 abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
944 /* generate code statistics */
945 for(t=0;t<file->method_bodies->num;t++) {
946 abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
947 m->stats = code_get_statistics(m->code, m->exceptions);
950 /* level init scope depths: The init scope depth of a method is
951 always as least as high as the init scope depth of it's surrounding
953 A method has it's own init_scope_depth if it's an init method
954 (then its init scope depth is zero), or if it's used as a closure.
956 Not sure yet what to do with methods which are used at different
957 locations- e.g. the nullmethod is used all over the place.
958 EDIT: flashplayer doesn't allow this anyway- a method can only
961 Also, I have the strong suspicion that flash player uses only
962 the difference between max_scope_stack and init_scope_stack, anyway.
964 for(t=0;t<file->classes->num;t++) {
965 abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
966 trait_list_t*traits = c->traits;
967 if(c->constructor && c->constructor->body &&
968 c->constructor->body->init_scope_depth < c->init_scope_depth) {
969 c->constructor->body->init_scope_depth = c->init_scope_depth;
971 if(c->static_constructor && c->static_constructor->body &&
972 c->static_constructor->body->init_scope_depth < c->init_scope_depth) {
973 c->static_constructor->body->init_scope_depth = c->init_scope_depth;
976 trait_t*trait = traits->trait;
977 if(trait_is_method(trait) && trait->method->body) {
978 abc_method_body_t*body = trait->method->body;
979 if(body->init_scope_depth < c->init_scope_depth) {
980 body->init_scope_depth = c->init_scope_depth;
983 traits = traits->next;
987 for(t=0;t<file->methods->num;t++) {
988 abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
990 multiname_list_t*l = m->parameters;
991 int num_params = list_length(m->parameters);
992 swf_SetU30(tag, num_params);
994 swf_SetU30(tag, pool_register_multiname(pool, m->return_type));
999 swf_SetU30(tag, pool_register_multiname(pool, l->multiname));
1003 swf_SetU30(tag, pool_register_string(pool, m->name));
1008 U8 flags = m->flags&(METHOD_NEED_REST|METHOD_NEED_ARGUMENTS);
1009 if(m->optional_parameters)
1010 flags |= METHOD_HAS_OPTIONAL;
1012 flags |= m->body->stats->flags;
1015 swf_SetU8(tag, flags);
1016 if(flags&METHOD_HAS_OPTIONAL) {
1017 swf_SetU30(tag, list_length(m->optional_parameters));
1018 constant_list_t*l = m->optional_parameters;
1020 swf_SetU30(tag, constant_get_index(pool, l->constant));
1021 swf_SetU8(tag, l->constant->type);
1027 /* write metadata */
1028 swf_SetU30(tag, file->metadata->num);
1029 for(t=0;t<file->metadata->num;t++) {
1030 const char*entry_name = array_getkey(file->metadata, t);
1031 swf_SetU30(tag, pool_register_string(pool, entry_name));
1032 array_t*items = (array_t*)array_getvalue(file->metadata, t);
1033 swf_SetU30(tag, items->num);
1035 for(s=0;s<items->num;s++) {
1036 int i1 = pool_register_string(pool, array_getkey(items, s));
1037 int i2 = pool_register_string(pool, array_getvalue(items, s));
1038 swf_SetU30(tag, i1);
1039 swf_SetU30(tag, i2);
1043 swf_SetU30(tag, file->classes->num);
1044 for(t=0;t<file->classes->num;t++) {
1045 abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1047 int classname_index = pool_register_multiname(pool, c->classname);
1048 int superclass_index = pool_register_multiname(pool, c->superclass);
1050 swf_SetU30(tag, classname_index);
1051 swf_SetU30(tag, superclass_index);
1053 swf_SetU8(tag, c->flags); // flags
1055 int ns_index = pool_register_namespace(pool, c->protectedNS);
1056 swf_SetU30(tag, ns_index);
1059 swf_SetU30(tag, list_length(c->interfaces));
1060 multiname_list_t*interface= c->interfaces;
1062 swf_SetU30(tag, pool_register_multiname(pool, interface->multiname));
1063 interface = interface->next;
1066 assert(c->constructor);
1067 swf_SetU30(tag, c->constructor->index);
1069 traits_write(pool, tag, c->traits);
1071 for(t=0;t<file->classes->num;t++) {
1072 abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1073 assert(c->static_constructor);
1074 swf_SetU30(tag, c->static_constructor->index);
1076 traits_write(pool, tag, c->static_traits);
1079 swf_SetU30(tag, file->scripts->num);
1080 for(t=0;t<file->scripts->num;t++) {
1081 abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
1082 swf_SetU30(tag, s->method->index); //!=t!
1083 traits_write(pool, tag, s->traits);
1086 swf_SetU30(tag, file->method_bodies->num);
1087 for(t=0;t<file->method_bodies->num;t++) {
1088 abc_method_body_t*c = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1089 abc_method_t*m = c->method;
1090 swf_SetU30(tag, m->index);
1092 //swf_SetU30(tag, c->old.max_stack);
1093 //swf_SetU30(tag, c->old.local_count);
1094 //swf_SetU30(tag, c->old.init_scope_depth);
1095 //swf_SetU30(tag, c->old.max_scope_depth);
1097 swf_SetU30(tag, c->stats->max_stack);
1099 int param_num = list_length(c->method->parameters)+1;
1100 if(c->method->flags&METHOD_NEED_REST)
1102 if(param_num <= c->stats->local_count)
1103 swf_SetU30(tag, c->stats->local_count);
1105 swf_SetU30(tag, param_num);
1107 swf_SetU30(tag, c->init_scope_depth);
1108 swf_SetU30(tag, c->stats->max_scope_depth+
1109 c->init_scope_depth);
1111 code_write(tag, c->code, pool, file);
1113 swf_SetU30(tag, list_length(c->exceptions));
1114 abc_exception_list_t*l = c->exceptions;
1116 // warning: assumes "pos" in each code_t is up-to-date
1117 swf_SetU30(tag, l->abc_exception->from->pos);
1118 swf_SetU30(tag, l->abc_exception->to->pos);
1119 swf_SetU30(tag, l->abc_exception->target->pos);
1120 swf_SetU30(tag, pool_register_multiname(pool, l->abc_exception->exc_type));
1121 swf_SetU30(tag, pool_register_multiname(pool, l->abc_exception->var_name));
1125 traits_write(pool, tag, c->traits);
1128 /* free temporary codestat data again. Notice: If we were to write this
1129 file multiple times, this can also be shifted to abc_file_free() */
1130 for(t=0;t<file->method_bodies->num;t++) {
1131 abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1132 codestats_free(m->stats);m->stats=0;
1135 // --- start to write real tag --
1139 if(tag->id == ST_DOABC) {
1140 swf_SetU32(tag, file->flags); // flags
1141 swf_SetString(tag, file->name);
1144 swf_SetU16(tag, 0x10); //version
1145 swf_SetU16(tag, 0x2e);
1147 pool_write(pool, tag);
1149 swf_SetBlock(tag, tmp->data, tmp->len);
1151 swf_DeleteTag(0, tmp);
1155 void abc_file_free(abc_file_t*file)
1158 if(file->metadata) {
1159 for(t=0;t<file->metadata->num;t++) {
1160 array_t*items = (array_t*)array_getvalue(file->metadata, t);
1162 for(s=0;s<items->num;s++) {
1163 free(array_getvalue(items, s));
1167 array_free(file->metadata);file->metadata=0;
1170 for(t=0;t<file->methods->num;t++) {
1171 abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
1173 multiname_list_t*param = m->parameters;
1175 multiname_destroy(param->multiname);param->multiname=0;
1176 param = param->next;
1178 list_free(m->parameters);m->parameters=0;
1180 constant_list_t*opt = m->optional_parameters;
1182 constant_free(opt->constant);opt->constant=0;
1185 list_free(m->optional_parameters);m->optional_parameters=0;
1188 free((void*)m->name);m->name=0;
1190 if(m->return_type) {
1191 multiname_destroy(m->return_type);
1195 array_free(file->methods);file->methods=0;
1197 for(t=0;t<file->classes->num;t++) {
1198 abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
1199 traits_free(cls->traits);cls->traits=0;
1200 traits_free(cls->static_traits);cls->static_traits=0;
1202 if(cls->classname) {
1203 multiname_destroy(cls->classname);
1205 if(cls->superclass) {
1206 multiname_destroy(cls->superclass);
1209 multiname_list_t*i = cls->interfaces;
1211 multiname_destroy(i->multiname);i->multiname=0;
1214 list_free(cls->interfaces);cls->interfaces=0;
1216 if(cls->protectedNS) {
1217 namespace_destroy(cls->protectedNS);
1221 array_free(file->classes);file->classes=0;
1223 for(t=0;t<file->scripts->num;t++) {
1224 abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
1225 traits_free(s->traits);s->traits=0;
1228 array_free(file->scripts);file->scripts=0;
1230 for(t=0;t<file->method_bodies->num;t++) {
1231 abc_method_body_t*body = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1232 code_free(body->code);body->code=0;
1233 traits_free(body->traits);body->traits=0;
1235 abc_exception_list_t*ee = body->exceptions;
1237 abc_exception_t*e=ee->abc_exception;ee->abc_exception=0;
1238 e->from = e->to = e->target = 0;
1239 multiname_destroy(e->exc_type);e->exc_type=0;
1240 multiname_destroy(e->var_name);e->var_name=0;
1244 list_free(body->exceptions);body->exceptions=0;
1248 array_free(file->method_bodies);file->method_bodies=0;
1251 free((void*)file->name);file->name=0;
1257 void swf_FreeABC(void*code)
1259 abc_file_t*file= (abc_file_t*)code;
1260 abc_file_free(file);
1263 void swf_AddButtonLinks(SWF*swf, char stop_each_frame, char events)
1266 int has_buttons = 0;
1267 TAG*tag=swf->firstTag;
1269 if(tag->id == ST_SHOWFRAME)
1271 if(tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2)
1276 abc_file_t*file = abc_file_new();
1277 abc_method_body_t*c = 0;
1279 abc_class_t*cls = abc_class_new2(file, "rfx::MainTimeline", "flash.display::MovieClip");
1280 abc_class_protectedNS(cls, "rfx:MainTimeline");
1282 TAG*abctag = swf_InsertTagBefore(swf, swf->firstTag, ST_DOABC);
1284 tag = swf_InsertTag(abctag, ST_SYMBOLCLASS);
1287 swf_SetString(tag, "rfx.MainTimeline");
1289 c = abc_class_staticconstructor(cls, 0)->body;
1290 c->old.max_stack = 1;
1291 c->old.local_count = 1;
1292 c->old.init_scope_depth = 9;
1293 c->old.max_scope_depth = 10;
1299 c = abc_class_constructor(cls, 0)->body;
1300 c->old.max_stack = 3;
1301 c->old.local_count = 1;
1302 c->old.init_scope_depth = 10;
1303 c->old.max_scope_depth = 11;
1305 debugfile(c, "constructor.as");
1311 __ constructsuper(c,0);
1313 __ getlex(c, "[package]flash.system::Security");
1314 __ pushstring(c, "*");
1315 __ callpropvoid(c, "[package]::allowDomain", 1);
1317 if(stop_each_frame || has_buttons) {
1319 tag = swf->firstTag;
1320 abc_method_body_t*f = 0; //frame script
1321 while(tag && tag->id!=ST_END) {
1323 char needs_framescript=0;
1324 char buttonname[80];
1325 char functionname[80];
1326 sprintf(framename, "[packageinternal]rfx::frame%d", frame);
1328 if(!f && (tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2 || stop_each_frame)) {
1329 /* make the contructor add a frame script */
1330 __ findpropstrict(c,"[package]::addFrameScript");
1331 __ pushbyte(c,frame);
1332 __ getlex(c,framename);
1333 __ callpropvoid(c,"[package]::addFrameScript",2);
1335 f = abc_class_method(cls, 0, multiname_fromstring(framename))->body;
1336 f->old.max_stack = 3;
1337 f->old.local_count = 1;
1338 f->old.init_scope_depth = 10;
1339 f->old.max_scope_depth = 11;
1340 __ debugfile(f, "framescript.as");
1344 if(stop_each_frame) {
1345 __ findpropstrict(f, "[package]::stop");
1346 __ callpropvoid(f, "[package]::stop", 0);
1350 if(tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2) {
1351 U16 id = swf_GetDefineID(tag);
1352 sprintf(buttonname, "::button%d", swf_GetDefineID(tag));
1353 __ getlex(f,buttonname);
1354 __ getlex(f,"flash.events::MouseEvent");
1355 __ getproperty(f, "::CLICK");
1356 sprintf(functionname, "::clickbutton%d", swf_GetDefineID(tag));
1357 __ getlex(f,functionname);
1358 __ callpropvoid(f, "::addEventListener" ,2);
1360 needs_framescript = 1;
1362 abc_method_body_t*h =
1363 abc_class_method(cls, 0, multiname_fromstring(functionname))->body;
1364 list_append(h->method->parameters, multiname_fromstring("flash.events::MouseEvent"));
1366 h->old.max_stack = 6;
1367 h->old.local_count = 2;
1368 h->old.init_scope_depth = 10;
1369 h->old.max_scope_depth = 11;
1373 ActionTAG*oldaction = swf_ButtonGetAction(tag);
1374 if(oldaction && oldaction->op == ACTION__GOTOFRAME) {
1375 int framenr = GET16(oldaction->data);
1377 fprintf(stderr, "Warning: Couldn't translate jump to frame %d to flash 9 actionscript\n", framenr);
1380 __ findpropstrict(h,"[package]::gotoAndStop");
1381 __ pushbyte(h,framenr+1);
1382 __ callpropvoid(h,"[package]::gotoAndStop", 1);
1385 sprintf(framename, "frame%d", framenr);
1386 __ getlocal_0(h); //this
1387 __ findpropstrict(h, "[package]flash.events::TextEvent");
1388 __ pushstring(h, "link");
1391 __ pushstring(h, framename);
1392 __ constructprop(h,"[package]flash.events::TextEvent", 4);
1393 __ callpropvoid(h,"[package]::dispatchEvent", 1);
1395 } else if(oldaction && oldaction->op == ACTION__GETURL) {
1397 __ findpropstrict(h,"flash.net::navigateToURL");
1398 __ findpropstrict(h,"flash.net::URLRequest");
1399 // TODO: target _blank
1400 __ pushstring(h,oldaction->data); //url
1401 __ constructprop(h,"flash.net::URLRequest", 1);
1402 __ callpropvoid(h,"flash.net::navigateToURL", 1);
1404 __ getlocal_0(h); //this
1405 __ findpropstrict(h, "[package]flash.events::TextEvent");
1406 __ pushstring(h, "link");
1409 __ pushstring(h,oldaction->data); //url
1410 __ constructprop(h,"[package]flash.events::TextEvent", 4);
1411 __ callpropvoid(h,"[package]::dispatchEvent", 1);
1413 } else if(oldaction) {
1414 fprintf(stderr, "Warning: Couldn't translate button code of button %d to flash 9 abc action\n", id);
1417 swf_ActionFree(oldaction);
1419 if(tag->id == ST_SHOWFRAME) {
1434 tag = swf->firstTag;
1436 if(tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2) {
1437 char buttonname[80];
1438 sprintf(buttonname, "::button%d", swf_GetDefineID(tag));
1439 multiname_t*s = multiname_fromstring(buttonname);
1440 abc_class_slot(cls, multiname_fromstring(buttonname), s);
1446 abc_script_t*s = abc_initscript(file, 0);
1447 c = s->method->body;
1448 c->old.max_stack = 2;
1449 c->old.local_count = 1;
1450 c->old.init_scope_depth = 1;
1451 c->old.max_scope_depth = 9;
1455 __ getscopeobject(c, 0);
1456 __ getlex(c,"::Object");
1458 __ getlex(c,"flash.events::EventDispatcher");
1460 __ getlex(c,"flash.display::DisplayObject");
1462 __ getlex(c,"flash.display::InteractiveObject");
1464 __ getlex(c,"flash.display::DisplayObjectContainer");
1466 __ getlex(c,"flash.display::Sprite");
1468 __ getlex(c,"flash.display::MovieClip");
1470 __ getlex(c,"flash.display::MovieClip");
1479 __ initproperty(c,"rfx::MainTimeline");
1482 //abc_method_body_addClassTrait(c, "rfx:MainTimeline", 1, cls);
1483 multiname_t*classname = multiname_fromstring("rfx::MainTimeline");
1484 abc_initscript_addClassTrait(s, classname, cls);
1485 multiname_destroy(classname);
1487 swf_WriteABC(abctag, file);