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 #include "assets.h"
30
31 char stringbuffer[2048];
32
33 int abc_RegisterNameSpace(abc_file_t*file, const char*name);
34 int abc_RegisterPackageNameSpace(abc_file_t*file, const char*name);
35 int abc_RegisterPackageInternalNameSpace(abc_file_t*file, const char*name);
36 int abc_RegisterProtectedNameSpace(abc_file_t*file, const char*name);
37 int abc_RegisterExplicitNameSpace(abc_file_t*file, const char*name);
38 int abc_RegisterStaticProtectedNameSpace(abc_file_t*file, const char*name);
39 int abc_RegisterPrivateNameSpace(abc_file_t*file, const char*name);
40
41 /* TODO: switch to a datastructure with just values */
42 #define NO_KEY ""
43
params_dump(FILE * fo,multiname_list_t * l,constant_list_t * o)44 static void params_dump(FILE*fo, multiname_list_t*l, constant_list_t*o)
45 {
46 int n = list_length(l);
47 int no = list_length(o);
48 int i = 0;
49
50 fprintf(fo, "(");
51 while(l) {
52 char*s = multiname_tostring(l->multiname);
53 fprintf(fo, "%s", s);
54 free(s);
55 if(i>=n-no) {
56 s = constant_tostring(o->constant);
57 fprintf(fo, " = ");
58 fprintf(fo, "%s", s);
59 free(s);
60 o = o->next;
61 }
62
63 if(l->next)
64 fprintf(fo, ", ");
65 l = l->next;i++;
66 }
67 fprintf(fo, ")");
68 }
69
70 //#define DEBUG
71 #define DEBUG if(0)
72
parse_metadata(TAG * tag,abc_file_t * file,pool_t * pool)73 static void parse_metadata(TAG*tag, abc_file_t*file, pool_t*pool)
74 {
75 int t;
76 int num_metadata = swf_GetU30(tag);
77
78 DEBUG printf("%d metadata\n", num_metadata);
79 for(t=0;t<num_metadata;t++) {
80 const char*entry_name = pool_lookup_string(pool, swf_GetU30(tag));
81 int num = swf_GetU30(tag);
82 int s;
83 DEBUG printf(" %s\n", entry_name);
84 array_t*items = array_new1();
85 for(s=0;s<num;s++) {
86 int i1 = swf_GetU30(tag);
87 int i2 = swf_GetU30(tag);
88 const char*key = i1?pool_lookup_string(pool, i1):"";
89 const char*value = i2?pool_lookup_string(pool, i2):"";
90 DEBUG printf(" %s=%s\n", key, value);
91 array_append(items, key, strdup(value));
92 }
93 array_append(file->metadata, entry_name, items);
94 }
95 }
96
swf_CopyData(TAG * to,TAG * from,int len)97 void swf_CopyData(TAG*to, TAG*from, int len)
98 {
99 unsigned char*data = malloc(len);
100 swf_GetBlock(from, data, len);
101 swf_SetBlock(to, data, len);
102 free(data);
103 }
104
abc_file_new()105 abc_file_t*abc_file_new()
106 {
107 abc_file_t*f = malloc(sizeof(abc_file_t));
108 memset(f, 0, sizeof(abc_file_t));
109 f->metadata = array_new1();
110
111 f->methods = array_new1();
112 f->classes = array_new1();
113 f->scripts = array_new1();
114 f->method_bodies = array_new1();
115 f->flags = ABCFILE_LAZY;
116
117 return f;
118 }
119
abc_class_new(abc_file_t * file,multiname_t * classname,multiname_t * superclass)120 abc_class_t* abc_class_new(abc_file_t*file, multiname_t*classname, multiname_t*superclass) {
121
122 NEW(abc_class_t,c);
123 if(file)
124 array_append(file->classes, NO_KEY, c);
125
126 c->file = file;
127 c->classname = multiname_clone(classname);
128 c->superclass = multiname_clone(superclass);
129 c->flags = 0;
130 c->constructor = 0;
131 c->static_constructor = 0;
132 c->traits = list_new();
133 return c;
134 }
abc_class_new2(abc_file_t * pool,char * classname,char * superclass)135 abc_class_t* abc_class_new2(abc_file_t*pool, char*classname, char*superclass)
136 {
137 return abc_class_new(pool, multiname_fromstring(classname), multiname_fromstring(superclass));
138 }
139
abc_class_sealed(abc_class_t * c)140 void abc_class_sealed(abc_class_t*c)
141 {
142 c->flags |= CLASS_SEALED;
143 }
abc_class_final(abc_class_t * c)144 void abc_class_final(abc_class_t*c)
145 {
146 c->flags |= CLASS_FINAL;
147 }
abc_class_interface(abc_class_t * c)148 void abc_class_interface(abc_class_t*c)
149 {
150 c->flags |= CLASS_INTERFACE;
151 }
abc_class_protectedNS(abc_class_t * c,char * namespace)152 void abc_class_protectedNS(abc_class_t*c, char*namespace)
153 {
154 c->protectedNS = namespace_new_protected(namespace);
155 c->flags |= CLASS_PROTECTED_NS;
156 }
abc_class_add_interface(abc_class_t * c,multiname_t * interface)157 void abc_class_add_interface(abc_class_t*c, multiname_t*interface)
158 {
159 list_append(c->interfaces, multiname_clone(interface));
160 }
abc_class_fullname(abc_class_t * cls)161 char*abc_class_fullname(abc_class_t*cls)
162 {
163 const char*package = cls->classname->ns->name;
164 const char*name = cls->classname->name;
165 int l1 = strlen(package);
166 int l2 = strlen(name);
167 char*fullname = malloc(l1+l2+2);
168 if(l1) {
169 memcpy(fullname, package, l1);
170 fullname[l1++]='.';
171 }
172 memcpy(fullname+l1, name, l2+1);
173 return fullname;
174 }
175
abc_method_init(abc_method_t * m,abc_file_t * file,multiname_t * returntype,char body)176 void abc_method_init(abc_method_t*m, abc_file_t*file, multiname_t*returntype, char body)
177 {
178 /* construct method object */
179 m->index = array_length(file->methods);
180 array_append(file->methods, NO_KEY, m);
181 m->return_type = returntype;
182
183 if(body) {
184 /* construct code (method body) object */
185 NEW(abc_method_body_t,c);
186 array_append(file->method_bodies, NO_KEY, c);
187 c->index = array_length(file->method_bodies);
188 c->file = file;
189 c->traits = list_new();
190 c->code = 0;
191
192 /* crosslink the two objects */
193 m->body = c;
194 c->method = m;
195 }
196 }
abc_method_new(abc_file_t * file,multiname_t * returntype,char body)197 abc_method_t* abc_method_new(abc_file_t*file, multiname_t*returntype, char body)
198 {
199 NEW(abc_method_t,m);
200 abc_method_init(m, file, returntype, body);
201 return m;
202 }
203
abc_class_getconstructor(abc_class_t * cls,multiname_t * returntype)204 abc_method_t* abc_class_getconstructor(abc_class_t*cls, multiname_t*returntype)
205 {
206 if(cls->constructor) {
207 return cls->constructor;
208 }
209 abc_method_t* m = abc_method_new(cls->file, returntype, 1);
210 cls->constructor = m;
211 return m;
212 }
213
abc_class_getstaticconstructor(abc_class_t * cls,multiname_t * returntype)214 abc_method_t* abc_class_getstaticconstructor(abc_class_t*cls, multiname_t*returntype)
215 {
216 if(cls->static_constructor) {
217 return cls->static_constructor;
218 }
219 abc_method_t* m = abc_method_new(cls->file, returntype, 1);
220 cls->static_constructor = m;
221 return m;
222 }
223
trait_new(int type,multiname_t * name,int data1,int data2,constant_t * v)224 trait_t*trait_new(int type, multiname_t*name, int data1, int data2, constant_t*v)
225 {
226 trait_t*trait = malloc(sizeof(trait_t));
227 memset(trait, 0, sizeof(trait_t));
228 trait->kind = type&0x0f;
229 trait->attributes = type&0xf0;
230 trait->name = name;
231 trait->data1 = data1;
232 trait->data2 = data2;
233 trait->value = v;
234 return trait;
235 }
236
trait_new_member(trait_list_t ** traits,multiname_t * type,multiname_t * name,constant_t * v)237 trait_t*trait_new_member(trait_list_t**traits, multiname_t*type, multiname_t*name,constant_t*v)
238 {
239 int kind = TRAIT_SLOT;
240 trait_t*trait = malloc(sizeof(trait_t));
241 memset(trait, 0, sizeof(trait_t));
242 trait->kind = kind&0x0f;
243 trait->attributes = kind&0xf0;
244 trait->name = name;
245 trait->type_name = type;
246
247 trait->slot_id = list_length(*traits)+1;
248 trait_list_t*l = *traits;
249 list_append_(traits, trait);
250 return trait;
251 }
trait_new_method(trait_list_t ** traits,multiname_t * name,abc_method_t * m)252 trait_t*trait_new_method(trait_list_t**traits, multiname_t*name, abc_method_t*m)
253 {
254 int type = TRAIT_METHOD;
255 trait_t*trait = malloc(sizeof(trait_t));
256 memset(trait, 0, sizeof(trait_t));
257 trait->kind = type&0x0f;
258 trait->attributes = type&0xf0;
259 trait->name = name;
260 trait->method = m;
261
262 /* start assigning traits at position #1.
263 Weird things happen when assigning slot 0- slot 0 and 1 seem
264 to be identical */
265 trait->slot_id = list_length(*traits)+1;
266 list_append_(traits, trait);
267 return trait;
268 }
269
abc_class_method(abc_class_t * cls,multiname_t * returntype,multiname_t * name)270 abc_method_t* abc_class_method(abc_class_t*cls, multiname_t*returntype, multiname_t*name)
271 {
272 abc_file_t*file = cls->file;
273 abc_method_t* m = abc_method_new(cls->file, returntype, !(cls->flags&CLASS_INTERFACE));
274 m->trait = trait_new_method(&cls->traits, multiname_clone(name), m);
275 return m;
276 }
abc_class_staticmethod(abc_class_t * cls,multiname_t * returntype,multiname_t * name)277 abc_method_t* abc_class_staticmethod(abc_class_t*cls, multiname_t*returntype, multiname_t*name)
278 {
279 abc_file_t*file = cls->file;
280 abc_method_t* m = abc_method_new(cls->file, returntype, !(cls->flags&CLASS_INTERFACE));
281 m->trait = trait_new_method(&cls->static_traits, multiname_clone(name), m);
282 return m;
283 }
284
abc_class_slot(abc_class_t * cls,multiname_t * name,multiname_t * type)285 trait_t* abc_class_slot(abc_class_t*cls, multiname_t*name, multiname_t*type)
286 {
287 abc_file_t*file = cls->file;
288 multiname_t*m_name = multiname_clone(name);
289 multiname_t*m_type = multiname_clone(type);
290 trait_t*t = trait_new_member(&cls->traits, m_type, m_name, 0);
291 return t;
292 }
abc_class_staticslot(abc_class_t * cls,multiname_t * name,multiname_t * type)293 trait_t* abc_class_staticslot(abc_class_t*cls, multiname_t*name, multiname_t*type)
294 {
295 abc_file_t*file = cls->file;
296 multiname_t*m_name = multiname_clone(name);
297 multiname_t*m_type = multiname_clone(type);
298 trait_t*t = trait_new_member(&cls->static_traits, m_type, m_name, 0);
299 return t;
300 }
301
302
traits_find_slotid(trait_list_t * traits,int slotid)303 trait_t* traits_find_slotid(trait_list_t*traits, int slotid)
304 {
305 trait_list_t*l;
306 trait_t*t=0;
307 for(l=traits;l;l=l->next) {
308 if(l->trait->slot_id==slotid) {
309 t=l->trait;
310 break;
311 }
312 }
313 return t;
314 }
315
abc_method_body_addClassTrait(abc_method_body_t * code,char * multiname,int slotid,abc_class_t * cls)316 void abc_method_body_addClassTrait(abc_method_body_t*code, char*multiname, int slotid, abc_class_t*cls)
317 {
318 abc_file_t*file = code->file;
319 multiname_t*m = multiname_fromstring(multiname);
320 trait_t*trait = trait_new(TRAIT_CLASS, m, slotid, 0, 0);
321 trait->cls = cls;
322 list_append(code->traits, trait);
323 }
324
325 /* notice: traits of a method (body) belonging to an init script
326 and traits of the init script are *not* the same thing */
abc_initscript_addClassTrait(abc_script_t * script,multiname_t * multiname,abc_class_t * cls)327 trait_t* abc_initscript_addClassTrait(abc_script_t*script, multiname_t*multiname, abc_class_t*cls)
328 {
329 abc_file_t*file = script->file;
330 multiname_t*m = multiname_clone(multiname);
331 int slotid = list_length(script->traits)+1;
332 trait_t*trait = trait_new(TRAIT_CLASS, m, slotid, 0, 0);
333 trait->cls = cls;
334 list_append(script->traits, trait);
335 return trait;
336 }
337
abc_initscript(abc_file_t * file)338 abc_script_t* abc_initscript(abc_file_t*file)
339 {
340 abc_method_t*m = abc_method_new(file, 0, 1);
341 abc_script_t* s = malloc(sizeof(abc_script_t));
342 s->method = m;
343 s->traits = list_new();
344 s->file = file;
345 array_append(file->scripts, NO_KEY, s);
346 return s;
347 }
348
349 static void traits_dump(FILE*fo, const char*prefix, trait_list_t*traits, abc_file_t*file, dict_t*methods_seen);
350
dump_method(FILE * fo,const char * prefix,const char * attr,const char * type,const char * name,abc_method_t * m,abc_file_t * file,dict_t * methods_seen)351 static void dump_method(FILE*fo, const char*prefix,
352 const char*attr,
353 const char*type,
354 const char*name,
355 abc_method_t*m, abc_file_t*file, dict_t*methods_seen)
356 {
357 if(methods_seen)
358 dict_put(methods_seen, m, 0);
359
360 char*return_type = 0;
361 if(m->return_type)
362 return_type = multiname_tostring(m->return_type);
363 else
364 return_type = strdup("*");
365
366 fprintf(fo, "%s", prefix);
367 fprintf(fo, "%s %s ", attr, type);
368 fprintf(fo, "%s %s=%s", return_type, name, m->name);
369 params_dump(fo, m->parameters, m->optional_parameters);
370 fprintf(fo, "(%d params, %d optional)\n", list_length(m->parameters), list_length(m->optional_parameters));
371
372 free(return_type);return_type=0;
373
374 abc_method_body_t*c = m->body;
375 if(!c) {
376 return;
377 }
378
379 fprintf(fo, "%s[stack:%d locals:%d scope:%d-%d flags:",
380 prefix, c->old.max_stack, c->old.local_count, c->old.init_scope_depth,
381 c->old.max_scope_depth);
382
383
384 int flags = c->method->flags;
385 if(flags&METHOD_NEED_ARGUMENTS) {fprintf(fo, " need_arguments");flags&=~METHOD_NEED_ARGUMENTS;}
386 if(flags&METHOD_NEED_ACTIVATION) {fprintf(fo, " need_activation");flags&=~METHOD_NEED_ACTIVATION;}
387 if(flags&METHOD_NEED_REST) {fprintf(fo, " need_rest");flags&=~METHOD_NEED_REST;}
388 if(flags&METHOD_HAS_OPTIONAL) {fprintf(fo, " has_optional");flags&=~METHOD_HAS_OPTIONAL;}
389 if(flags&METHOD_SET_DXNS) {fprintf(fo, " set_dxns");flags&=~METHOD_SET_DXNS;}
390 if(flags&METHOD_HAS_PARAM_NAMES) {fprintf(fo, " has_param_names");flags&=~METHOD_HAS_PARAM_NAMES;}
391 if(flags) fprintf(fo, " %02x", flags);
392 fprintf(fo, "]");
393
394 if(m->trait) {
395 fprintf(fo, " slot:%d", m->trait->slot_id);
396 }
397 fprintf(fo, "\n");
398
399
400 char prefix2[80];
401 sprintf(prefix2, "%s ", prefix);
402 if(c->traits)
403 traits_dump(fo, prefix, c->traits, file, methods_seen);
404 fprintf(fo, "%s{\n", prefix);
405 code_dump2(c->code, c->exceptions, file, prefix2, fo);
406 fprintf(fo, "%s}\n\n", prefix);
407 }
408
traits_free(trait_list_t * traits)409 static void traits_free(trait_list_t*traits)
410 {
411 trait_list_t*t = traits;
412 while(t) {
413 if(t->trait->name) {
414 multiname_destroy(t->trait->name);t->trait->name = 0;
415 }
416 if(t->trait->kind == TRAIT_SLOT || t->trait->kind == TRAIT_CONST) {
417 multiname_destroy(t->trait->type_name);
418 }
419 if(t->trait->value) {
420 constant_free(t->trait->value);t->trait->value = 0;
421 }
422 free(t->trait);t->trait = 0;
423 t = t->next;
424 }
425 list_free(traits);
426 }
427
trait_is_method(trait_t * trait)428 static char trait_is_method(trait_t*trait)
429 {
430 return (trait->kind == TRAIT_METHOD || trait->kind == TRAIT_GETTER ||
431 trait->kind == TRAIT_SETTER || trait->kind == TRAIT_FUNCTION);
432 }
433
traits_parse(TAG * tag,pool_t * pool,abc_file_t * file)434 static trait_list_t* traits_parse(TAG*tag, pool_t*pool, abc_file_t*file)
435 {
436 int num_traits = swf_GetU30(tag);
437 trait_list_t*traits = list_new();
438 int t;
439 if(num_traits) {
440 DEBUG printf("%d traits\n", num_traits);
441 }
442
443 for(t=0;t<num_traits;t++) {
444 NEW(trait_t,trait);
445 list_append(traits, trait);
446
447 trait->name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag))); // always a QName (ns,name)
448
449 const char*name = 0;
450 DEBUG name = multiname_tostring(trait->name);
451 U8 kind = swf_GetU8(tag);
452 U8 attributes = kind&0xf0;
453 kind&=0x0f;
454 trait->kind = kind;
455 trait->attributes = attributes;
456 DEBUG printf(" trait %d) %s type=%02x\n", t, name, kind);
457 if(kind == TRAIT_METHOD || kind == TRAIT_GETTER || kind == TRAIT_SETTER) { // method / getter / setter
458 trait->disp_id = swf_GetU30(tag);
459 trait->method = (abc_method_t*)array_getvalue(file->methods, swf_GetU30(tag));
460 trait->method->trait = trait;
461 DEBUG printf(" method/getter/setter\n");
462 } else if(kind == TRAIT_FUNCTION) { // function
463 trait->slot_id = swf_GetU30(tag);
464 trait->method = (abc_method_t*)array_getvalue(file->methods, swf_GetU30(tag));
465 trait->method->trait = trait;
466 } else if(kind == TRAIT_CLASS) { // class
467 trait->slot_id = swf_GetU30(tag);
468 trait->cls = (abc_class_t*)array_getvalue(file->classes, swf_GetU30(tag));
469 DEBUG printf(" class %s %d %p\n", name, trait->slot_id, (int)trait->cls);
470 } else if(kind == TRAIT_SLOT || kind == TRAIT_CONST) { // slot, const
471 trait->slot_id = swf_GetU30(tag);
472 trait->type_name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
473 int vindex = swf_GetU30(tag);
474 if(vindex) {
475 int vkind = swf_GetU8(tag);
476 trait->value = constant_fromindex(pool, vindex, vkind);
477 }
478 DEBUG printf(" slot %s %d %s (%s)\n", name, trait->slot_id, trait->type_name->name, constant_tostring(trait->value));
479 } else {
480 fprintf(stderr, "Can't parse trait type %d\n", kind);
481 }
482 if(attributes&0x40) {
483 int num = swf_GetU30(tag);
484 int s;
485 for(s=0;s<num;s++) {
486 swf_GetU30(tag); //index into metadata array
487 }
488 }
489 }
490 return traits;
491 }
492
traits_skip(TAG * tag)493 void traits_skip(TAG*tag)
494 {
495 int num_traits = swf_GetU30(tag);
496 int t;
497 for(t=0;t<num_traits;t++) {
498 swf_GetU30(tag);
499 U8 kind = swf_GetU8(tag);
500 U8 attributes = kind&0xf0;
501 kind&=0x0f;
502 swf_GetU30(tag);
503 swf_GetU30(tag);
504 if(kind == TRAIT_SLOT || kind == TRAIT_CONST) {
505 if(swf_GetU30(tag)) swf_GetU8(tag);
506 } else if(kind>TRAIT_CONST) {
507 fprintf(stderr, "Can't parse trait type %d\n", kind);
508 }
509 if(attributes&0x40) {
510 int s, num = swf_GetU30(tag);
511 for(s=0;s<num;s++) swf_GetU30(tag);
512 }
513 }
514 }
515
516
traits_write(pool_t * pool,TAG * tag,trait_list_t * traits)517 static void traits_write(pool_t*pool, TAG*tag, trait_list_t*traits)
518 {
519 if(!traits) {
520 swf_SetU30(tag, 0);
521 return;
522 }
523 swf_SetU30(tag, list_length(traits));
524 int s;
525
526 while(traits) {
527 trait_t*trait = traits->trait;
528
529 swf_SetU30(tag, pool_register_multiname(pool, trait->name));
530 swf_SetU8(tag, trait->kind|trait->attributes);
531
532 swf_SetU30(tag, trait->data1);
533
534 if(trait->kind == TRAIT_CLASS) {
535 swf_SetU30(tag, trait->cls->index);
536 } else if(trait->kind == TRAIT_GETTER ||
537 trait->kind == TRAIT_SETTER ||
538 trait->kind == TRAIT_METHOD) {
539 swf_SetU30(tag, trait->method->index);
540 } else if(trait->kind == TRAIT_SLOT ||
541 trait->kind == TRAIT_CONST) {
542 int index = pool_register_multiname(pool, trait->type_name);
543 swf_SetU30(tag, index);
544 } else {
545 swf_SetU30(tag, trait->data2);
546 }
547
548 if(trait->kind == TRAIT_SLOT || trait->kind == TRAIT_CONST) {
549 int vindex = constant_get_index(pool, trait->value);
550 swf_SetU30(tag, vindex);
551 if(vindex) {
552 swf_SetU8(tag, trait->value->type);
553 }
554 }
555 if(trait->attributes&0x40) {
556 // metadata
557 swf_SetU30(tag, 0);
558 }
559 traits = traits->next;
560 }
561 }
562
563
traits_dump(FILE * fo,const char * prefix,trait_list_t * traits,abc_file_t * file,dict_t * methods_seen)564 static void traits_dump(FILE*fo, const char*prefix, trait_list_t*traits, abc_file_t*file, dict_t*methods_seen)
565 {
566 int t;
567 while(traits) {
568 trait_t*trait = traits->trait;
569 char*name = multiname_tostring(trait->name);
570 U8 kind = trait->kind;
571 U8 attributes = trait->attributes;
572
573 char a = attributes & (TRAIT_ATTR_OVERRIDE|TRAIT_ATTR_FINAL);
574 char* type = "";
575 if(a==TRAIT_ATTR_FINAL)
576 type = "final ";
577 else if(a==TRAIT_ATTR_OVERRIDE)
578 type = "override ";
579 else if(a==(TRAIT_ATTR_OVERRIDE|TRAIT_ATTR_FINAL))
580 type = "final override ";
581
582 if(attributes&TRAIT_ATTR_METADATA)
583 fprintf(fo, "<metadata>");
584
585 if(kind == TRAIT_METHOD) {
586 abc_method_t*m = trait->method;
587 dump_method(fo, prefix, type, "method", name, m, file, methods_seen);
588 } else if(kind == TRAIT_GETTER) {
589 abc_method_t*m = trait->method;
590 dump_method(fo, prefix, type, "getter", name, m, file, methods_seen);
591 } else if(kind == TRAIT_SETTER) {
592 abc_method_t*m = trait->method;
593 dump_method(fo, prefix, type, "setter", name, m, file, methods_seen);
594 } else if(kind == TRAIT_FUNCTION) { // function
595 abc_method_t*m = trait->method;
596 dump_method(fo, prefix, type, "function", name, m, file, methods_seen);
597 } else if(kind == TRAIT_CLASS) { // class
598 abc_class_t*cls = trait->cls;
599 if(!cls) {
600 fprintf(fo, "%sslot %d: class %s=00000000\n", prefix, trait->slot_id, name);
601 } else {
602 fprintf(fo, "%sslot %d: class %s=%s\n", prefix, trait->slot_id, name, cls->classname->name);
603 }
604 } else if(kind == TRAIT_SLOT || kind == TRAIT_CONST) { // slot, const
605 int slot_id = trait->slot_id;
606 char*type_name = multiname_tostring(trait->type_name);
607 char*value = constant_tostring(trait->value);
608 fprintf(fo, "%sslot %d: %s %s:%s %s %s\n", prefix, trait->slot_id,
609 kind==TRAIT_CONST?"const":"var", name, type_name,
610 trait->value?"=":"", trait->value?value:"");
611 if(value) free(value);
612 free(type_name);
613 } else {
614 fprintf(fo, "%s can't dump trait type %d\n", prefix, kind);
615 }
616 free(name);
617 traits=traits->next;
618 }
619 }
620
swf_DumpABC(FILE * fo,void * code,char * prefix)621 void* swf_DumpABC(FILE*fo, void*code, char*prefix)
622 {
623 abc_file_t* file = (abc_file_t*)code;
624
625 if(file->name) {
626 fprintf(fo, "%s#\n", prefix);
627 fprintf(fo, "%s#name: %s\n", prefix, file->name);
628 fprintf(fo, "%s#\n", prefix);
629 }
630
631 int t;
632 for(t=0;t<file->metadata->num;t++) {
633 const char*entry_name = array_getkey(file->metadata, t);
634 fprintf(fo, "%s#Metadata \"%s\":\n", prefix, entry_name);
635 int s;
636 array_t*items = (array_t*)array_getvalue(file->metadata, t);
637 for(s=0;s<items->num;s++) {
638 fprintf(fo, "%s# %s=%s\n", prefix, (char*)array_getkey(items, s), (char*)array_getvalue(items,s));
639 }
640 fprintf(fo, "%s#\n", prefix);
641 }
642
643 dict_t*methods_seen = dict_new2(&ptr_type);
644 for(t=0;t<file->classes->num;t++) {
645 abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
646 char prefix2[80];
647 sprintf(prefix2, "%s ", prefix);
648
649 fprintf(fo, "%s", prefix);
650 if(cls->flags&1) fprintf(fo, "sealed ");
651 if(cls->flags&2) fprintf(fo, "final ");
652 if(cls->flags&4) fprintf(fo, "interface ");
653 if(cls->flags&8) {
654 char*s = namespace_tostring(cls->protectedNS);
655 fprintf(fo, "protectedNS(%s) ", s);
656 free(s);
657 }
658
659 char*classname = multiname_tostring(cls->classname);
660 fprintf(fo, "class %s", classname);
661 free(classname);
662 if(cls->superclass) {
663 char*supername = multiname_tostring(cls->superclass);
664 fprintf(fo, " extends %s", supername);
665 free(supername);
666 }
667 if(cls->interfaces) {
668 multiname_list_t*ilist = cls->interfaces;
669 if(ilist)
670 fprintf(fo, " implements");
671 while(ilist) {
672 char*s = multiname_tostring(ilist->multiname);
673 fprintf(fo, " %s", s);
674 free(s);
675 ilist = ilist->next;
676 }
677 ilist->next;
678 }
679 if(cls->flags&0xf0)
680 fprintf(fo, "extra flags=%02x\n", cls->flags&0xf0);
681 fprintf(fo, "%s{\n", prefix);
682
683 dict_put(methods_seen, cls->static_constructor, 0);
684 dict_put(methods_seen, cls->constructor, 0);
685
686 if(cls->static_constructor) {
687 dump_method(fo, prefix2, "", "staticconstructor", "", cls->static_constructor, file, methods_seen);
688 }
689 traits_dump(fo, prefix2, cls->static_traits, file, methods_seen);
690
691 char*n = multiname_tostring(cls->classname);
692 if(cls->constructor)
693 dump_method(fo, prefix2, "", "constructor", n, cls->constructor, file, methods_seen);
694 free(n);
695 traits_dump(fo, prefix2,cls->traits, file, methods_seen);
696
697 if(cls->asset) {
698 swf_DumpAsset(fo, cls->asset, prefix2);
699 }
700
701 fprintf(fo, "%s}\n", prefix);
702 }
703 fprintf(fo, "%s\n", prefix);
704
705 for(t=0;t<file->scripts->num;t++) {
706 abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
707 dump_method(fo, prefix, "", "initmethod", "init", s->method, file, methods_seen);
708 traits_dump(fo, prefix, s->traits, file, methods_seen);
709 }
710
711 char extra=0;
712 for(t=0;t<file->methods->num;t++) {
713 abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
714 if(!dict_contains(methods_seen, m)) {
715 if(!extra) {
716 extra=1;
717 fprintf(fo, "\n");
718 fprintf(fo, "%s//internal (non-class non-script) methods:\n", prefix);
719 }
720 char name[18];
721 sprintf(name, "%08x ", m->index);
722 dump_method(fo, prefix, "", "internalmethod", name, m, file, methods_seen);
723 }
724 }
725 dict_destroy(methods_seen);
726
727 return file;
728 }
729
swf_ReadABC(TAG * tag)730 void* swf_ReadABC(TAG*tag)
731 {
732 abc_file_t* file = abc_file_new();
733 pool_t*pool = pool_new();
734
735 swf_SetTagPos(tag, 0);
736 int t;
737 if(tag->id == ST_DOABC) {
738 U32 abcflags = swf_GetU32(tag);
739 DEBUG printf("flags=%08x\n", abcflags);
740 char*name= swf_GetString(tag);
741 file->name = (name&&name[0])?strdup(name):0;
742 }
743 U32 version = swf_GetU32(tag);
744 if(version!=0x002e0010) {
745 fprintf(stderr, "Warning: unknown AVM2 version %08x\n", version);
746 }
747
748 pool_read(pool, tag);
749
750 int num_methods = swf_GetU30(tag);
751 DEBUG printf("%d methods\n", num_methods);
752 for(t=0;t<num_methods;t++) {
753 NEW(abc_method_t,m);
754 int param_count = swf_GetU30(tag);
755 int return_type_index = swf_GetU30(tag);
756 if(return_type_index)
757 m->return_type = multiname_clone(pool_lookup_multiname(pool, return_type_index));
758 else
759 m->return_type = 0;
760
761 int s;
762 for(s=0;s<param_count;s++) {
763 int type_index = swf_GetU30(tag);
764
765 /* type_index might be 0 ("*") */
766 multiname_t*param = type_index?multiname_clone(pool_lookup_multiname(pool, type_index)):0;
767 list_append(m->parameters, param);
768 }
769
770 int namenr = swf_GetU30(tag);
771 if(namenr)
772 m->name = strdup(pool_lookup_string(pool, namenr));
773 else
774 m->name = strdup("");
775
776 m->flags = swf_GetU8(tag);
777
778 DEBUG printf("method %d) %s ", t, m->name);
779 DEBUG params_dump(stdout, m->parameters, m->optional_parameters);
780 DEBUG printf("flags=%02x\n", m->flags);
781
782 if(m->flags&0x08) {
783 m->optional_parameters = list_new();
784 int num = swf_GetU30(tag);
785 int s;
786 for(s=0;s<num;s++) {
787 int vindex = swf_GetU30(tag);
788 U8 vkind = swf_GetU8(tag); // specifies index type for "val"
789 constant_t*c = constant_fromindex(pool, vindex, vkind);
790 list_append(m->optional_parameters, c);
791
792 }
793 }
794 if(m->flags&0x80) {
795 /* debug information- not used by avm2 */
796 multiname_list_t*l = m->parameters;
797 while(l) {
798 const char*name = pool_lookup_string(pool, swf_GetU30(tag));
799 l = l->next;
800 }
801 }
802 m->index = array_length(file->methods);
803 array_append(file->methods, NO_KEY, m);
804 }
805
806 parse_metadata(tag, file, pool);
807
808 /* skip classes, and scripts for now, and do the real parsing later */
809 int num_classes = swf_GetU30(tag);
810 int classes_pos = tag->pos;
811 DEBUG printf("%d classes\n", num_classes);
812 for(t=0;t<num_classes;t++) {
813 abc_class_t*cls = malloc(sizeof(abc_class_t));
814 memset(cls, 0, sizeof(abc_class_t));
815
816 swf_GetU30(tag); //classname
817 swf_GetU30(tag); //supername
818
819 array_append(file->classes, NO_KEY, cls);
820
821 cls->flags = swf_GetU8(tag);
822 DEBUG printf("class %d %02x\n", t, cls->flags);
823 if(cls->flags&8)
824 swf_GetU30(tag); //protectedNS
825 int s;
826 int inum = swf_GetU30(tag); //interface count
827 cls->interfaces = 0;
828 for(s=0;s<inum;s++) {
829 int interface_index = swf_GetU30(tag);
830 multiname_t* m = multiname_clone(pool_lookup_multiname(pool, interface_index));
831 list_append(cls->interfaces, m);
832 DEBUG printf(" class %d interface: %s\n", t, m->name);
833 }
834
835 int iinit = swf_GetU30(tag); //iinit
836 DEBUG printf("--iinit-->%d\n", iinit);
837 traits_skip(tag);
838 }
839 for(t=0;t<num_classes;t++) {
840 abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
841 int cinit = swf_GetU30(tag);
842 DEBUG printf("--cinit(%d)-->%d\n", t, cinit);
843 cls->static_constructor = (abc_method_t*)array_getvalue(file->methods, cinit);
844 traits_skip(tag);
845 }
846 int num_scripts = swf_GetU30(tag);
847 DEBUG printf("%d scripts\n", num_scripts);
848 for(t=0;t<num_scripts;t++) {
849 int init = swf_GetU30(tag);
850 traits_skip(tag);
851 }
852
853 int num_method_bodies = swf_GetU30(tag);
854 DEBUG printf("%d method bodies\n", num_method_bodies);
855 for(t=0;t<num_method_bodies;t++) {
856 int methodnr = swf_GetU30(tag);
857 if(methodnr >= file->methods->num) {
858 printf("Invalid method number: %d\n", methodnr);
859 return 0;
860 }
861 abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, methodnr);
862 abc_method_body_t*c = malloc(sizeof(abc_method_body_t));
863 memset(c, 0, sizeof(abc_method_body_t));
864 c->old.max_stack = swf_GetU30(tag);
865 c->old.local_count = swf_GetU30(tag);
866 c->old.init_scope_depth = swf_GetU30(tag);
867 c->old.max_scope_depth = swf_GetU30(tag);
868
869 c->init_scope_depth = c->old.init_scope_depth;
870 int code_length = swf_GetU30(tag);
871
872 c->method = m;
873 m->body = c;
874
875 int pos = tag->pos + code_length;
876 codelookup_t*codelookup = 0;
877 c->code = code_parse(tag, code_length, file, pool, &codelookup);
878 tag->pos = pos;
879
880 int exception_count = swf_GetU30(tag);
881 int s;
882 c->exceptions = list_new();
883 for(s=0;s<exception_count;s++) {
884 abc_exception_t*e = malloc(sizeof(abc_exception_t));
885
886 e->from = code_atposition(codelookup, swf_GetU30(tag));
887 e->to = code_atposition(codelookup, swf_GetU30(tag));
888 e->target = code_atposition(codelookup, swf_GetU30(tag));
889
890 e->exc_type = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
891 e->var_name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
892 //e->var_name = pool_lookup_string(pool, swf_GetU30(tag));
893 //if(e->var_name) e->var_name = strdup(e->var_name);
894 list_append(c->exceptions, e);
895 }
896 codelookup_free(codelookup);
897 c->traits = traits_parse(tag, pool, file);
898
899 DEBUG printf("method_body %d) (method %d), %d bytes of code\n", t, methodnr, code_length);
900
901 array_append(file->method_bodies, NO_KEY, c);
902 }
903 if(tag->len - tag->pos) {
904 fprintf(stderr, "ERROR: %d unparsed bytes remaining in ABC block\n", tag->len - tag->pos);
905 return 0;
906 }
907
908 swf_SetTagPos(tag, classes_pos);
909 for(t=0;t<num_classes;t++) {
910 abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
911
912 int classname_index = swf_GetU30(tag);
913 int superclass_index = swf_GetU30(tag);
914 cls->classname = multiname_clone(pool_lookup_multiname(pool, classname_index));
915 cls->superclass = multiname_clone(pool_lookup_multiname(pool, superclass_index));
916 cls->flags = swf_GetU8(tag);
917 const char*ns = "";
918 if(cls->flags&8) {
919 int ns_index = swf_GetU30(tag);
920 cls->protectedNS = namespace_clone(pool_lookup_namespace(pool, ns_index));
921 }
922
923 int num_interfaces = swf_GetU30(tag); //interface count
924 int s;
925 for(s=0;s<num_interfaces;s++) {
926 swf_GetU30(tag);
927 }
928 int iinit = swf_GetU30(tag);
929 cls->constructor = (abc_method_t*)array_getvalue(file->methods, iinit);
930 cls->traits = traits_parse(tag, pool, file);
931 }
932 for(t=0;t<num_classes;t++) {
933 abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
934 /* SKIP */
935 swf_GetU30(tag); // cindex
936 cls->static_traits = traits_parse(tag, pool, file);
937 }
938 int num_scripts2 = swf_GetU30(tag);
939 for(t=0;t<num_scripts2;t++) {
940 int init = swf_GetU30(tag);
941 abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, init);
942
943 abc_script_t*s = malloc(sizeof(abc_script_t));
944 memset(s, 0, sizeof(abc_script_t));
945 s->method = m;
946 s->traits = traits_parse(tag, pool, file);
947 array_append(file->scripts, NO_KEY, s);
948 }
949
950 pool_destroy(pool);
951 return file;
952 }
953
writeABC(TAG * abctag,void * code,pool_t * pool)954 static pool_t*writeABC(TAG*abctag, void*code, pool_t*pool)
955 {
956 abc_file_t*file = (abc_file_t*)code;
957 if(!pool)
958 pool = pool_new();
959 if(!file)
960 file = abc_file_new();
961
962 TAG*tmp = swf_InsertTag(0,0);
963 TAG*tag = tmp;
964 int t;
965
966 /* add method bodies where needed */
967 for(t=0;t<file->classes->num;t++) {
968 abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
969 if(!c->constructor) {
970 if(!(c->flags&CLASS_INTERFACE)) {
971 NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
972 NEW(abc_method_body_t,body);array_append(file->method_bodies, NO_KEY, body);
973 // don't bother to set m->index
974 body->method = m; m->body = body;
975 if(c->superclass && c->superclass->name && strcmp(c->superclass->name,"Object")) {
976 body->code = abc_getlocal_0(body->code);
977 body->code = abc_constructsuper(body->code, 0);
978 }
979 body->code = abc_returnvoid(body->code);
980 c->constructor = m;
981 } else {
982 NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
983 c->constructor = m;
984 }
985 }
986 if(!c->static_constructor) {
987 NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
988 NEW(abc_method_body_t,body);array_append(file->method_bodies, NO_KEY, body);
989 body->method = m; m->body = body;
990 body->code = abc_returnvoid(0);
991 c->static_constructor = m;
992 }
993 }
994
995
996 swf_SetU30(tag, file->methods->num);
997 /* enumerate classes, methods and method bodies */
998 for(t=0;t<file->methods->num;t++) {
999 abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
1000 m->index = t;
1001 }
1002 for(t=0;t<file->classes->num;t++) {
1003 abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1004 c->index = t;
1005 }
1006 for(t=0;t<file->method_bodies->num;t++) {
1007 abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1008 m->index = t;
1009 }
1010
1011 /* generate code statistics */
1012 for(t=0;t<file->method_bodies->num;t++) {
1013 abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1014 m->stats = code_get_statistics(m->code, m->exceptions);
1015 }
1016
1017 /* level init scope depths: The init scope depth of a method is
1018 always as least as high as the init scope depth of it's surrounding
1019 class.
1020 A method has it's own init_scope_depth if it's an init method
1021 (then its init scope depth is zero), or if it's used as a closure.
1022
1023 Not sure yet what to do with methods which are used at different
1024 locations- e.g. the nullmethod is used all over the place.
1025 EDIT: flashplayer doesn't allow this anyway- a method can only
1026 be used once
1027
1028 Also, I have the strong suspicion that flash player uses only
1029 the difference between max_scope_stack and init_scope_stack, anyway.
1030 */
1031 for(t=0;t<file->classes->num;t++) {
1032 abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1033 trait_list_t*traits = c->traits;
1034 if(c->constructor && c->constructor->body &&
1035 c->constructor->body->init_scope_depth < c->init_scope_depth) {
1036 c->constructor->body->init_scope_depth = c->init_scope_depth;
1037 }
1038 if(c->static_constructor && c->static_constructor->body &&
1039 c->static_constructor->body->init_scope_depth < c->init_scope_depth) {
1040 c->static_constructor->body->init_scope_depth = c->init_scope_depth;
1041 }
1042 while(traits) {
1043 trait_t*trait = traits->trait;
1044 if(trait_is_method(trait) && trait->method->body) {
1045 abc_method_body_t*body = trait->method->body;
1046 if(body->init_scope_depth < c->init_scope_depth) {
1047 body->init_scope_depth = c->init_scope_depth;
1048 }
1049 }
1050 traits = traits->next;
1051 }
1052 }
1053
1054 for(t=0;t<file->methods->num;t++) {
1055 abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
1056 int n = 0;
1057 multiname_list_t*l = m->parameters;
1058 int num_params = list_length(m->parameters);
1059 swf_SetU30(tag, num_params);
1060 if(m->return_type)
1061 swf_SetU30(tag, pool_register_multiname(pool, m->return_type));
1062 else
1063 swf_SetU30(tag, 0);
1064 int s;
1065 while(l) {
1066 swf_SetU30(tag, pool_register_multiname(pool, l->multiname));
1067 l = l->next;
1068 }
1069 if(m->name) {
1070 swf_SetU30(tag, pool_register_string(pool, m->name));
1071 } else {
1072 swf_SetU30(tag, 0);
1073 }
1074
1075 U8 flags = m->flags&(METHOD_NEED_REST|METHOD_NEED_ARGUMENTS);
1076 if(m->optional_parameters)
1077 flags |= METHOD_HAS_OPTIONAL;
1078 if(m->body) {
1079 flags |= m->body->stats->flags;
1080 }
1081
1082 swf_SetU8(tag, flags);
1083 if(flags&METHOD_HAS_OPTIONAL) {
1084 swf_SetU30(tag, list_length(m->optional_parameters));
1085 constant_list_t*l = m->optional_parameters;
1086 while(l) {
1087 int i = constant_get_index(pool, l->constant);
1088 swf_SetU30(tag, i);
1089 if(!i) {
1090 swf_SetU8(tag, CONSTANT_NULL);
1091 } else {
1092 swf_SetU8(tag, l->constant->type);
1093 }
1094 l = l->next;
1095 }
1096 }
1097 }
1098
1099 /* write metadata */
1100 swf_SetU30(tag, file->metadata->num);
1101 for(t=0;t<file->metadata->num;t++) {
1102 const char*entry_name = array_getkey(file->metadata, t);
1103 swf_SetU30(tag, pool_register_string(pool, entry_name));
1104 array_t*items = (array_t*)array_getvalue(file->metadata, t);
1105 swf_SetU30(tag, items->num);
1106 int s;
1107 for(s=0;s<items->num;s++) {
1108 int i1 = pool_register_string(pool, array_getkey(items, s));
1109 int i2 = pool_register_string(pool, array_getvalue(items, s));
1110 swf_SetU30(tag, i1);
1111 swf_SetU30(tag, i2);
1112 }
1113 }
1114
1115 swf_SetU30(tag, file->classes->num);
1116 for(t=0;t<file->classes->num;t++) {
1117 abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1118
1119 int classname_index = pool_register_multiname(pool, c->classname);
1120 int superclass_index = pool_register_multiname(pool, c->superclass);
1121
1122 swf_SetU30(tag, classname_index);
1123 swf_SetU30(tag, superclass_index);
1124
1125 swf_SetU8(tag, c->flags); // flags
1126 if(c->flags&0x08) {
1127 int ns_index = pool_register_namespace(pool, c->protectedNS);
1128 swf_SetU30(tag, ns_index);
1129 }
1130
1131 swf_SetU30(tag, list_length(c->interfaces));
1132 multiname_list_t*interface= c->interfaces;
1133 while(interface) {
1134 swf_SetU30(tag, pool_register_multiname(pool, interface->multiname));
1135 interface = interface->next;
1136 }
1137
1138 assert(c->constructor);
1139 swf_SetU30(tag, c->constructor->index);
1140
1141 traits_write(pool, tag, c->traits);
1142 }
1143 for(t=0;t<file->classes->num;t++) {
1144 abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1145 assert(c->static_constructor);
1146 swf_SetU30(tag, c->static_constructor->index);
1147
1148 traits_write(pool, tag, c->static_traits);
1149 }
1150
1151 swf_SetU30(tag, file->scripts->num);
1152 for(t=0;t<file->scripts->num;t++) {
1153 abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
1154 if(!s->method->body || !s->method->body->code) {
1155 fprintf(stderr, "Internal Error: initscript has no body\n");
1156 }
1157 swf_SetU30(tag, s->method->index); //!=t!
1158 traits_write(pool, tag, s->traits);
1159 }
1160
1161 swf_SetU30(tag, file->method_bodies->num);
1162 for(t=0;t<file->method_bodies->num;t++) {
1163 abc_method_body_t*c = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1164 abc_method_t*m = c->method;
1165 swf_SetU30(tag, m->index);
1166
1167 //swf_SetU30(tag, c->old.max_stack);
1168 //swf_SetU30(tag, c->old.local_count);
1169 //swf_SetU30(tag, c->old.init_scope_depth);
1170 //swf_SetU30(tag, c->old.max_scope_depth);
1171
1172 swf_SetU30(tag, c->stats->max_stack);
1173 int param_num = list_length(c->method->parameters)+1;
1174 if(c->method->flags&METHOD_NEED_REST)
1175 param_num++;
1176 if(param_num <= c->stats->local_count)
1177 swf_SetU30(tag, c->stats->local_count);
1178 else
1179 swf_SetU30(tag, param_num);
1180
1181 swf_SetU30(tag, c->init_scope_depth);
1182 swf_SetU30(tag, c->stats->max_scope_depth+
1183 c->init_scope_depth);
1184
1185 code_write(tag, c->code, pool, file);
1186
1187 swf_SetU30(tag, list_length(c->exceptions));
1188 abc_exception_list_t*l = c->exceptions;
1189 while(l) {
1190 // warning: assumes "pos" in each code_t is up-to-date
1191 swf_SetU30(tag, l->abc_exception->from->pos);
1192 swf_SetU30(tag, l->abc_exception->to->pos);
1193 swf_SetU30(tag, l->abc_exception->target->pos);
1194 swf_SetU30(tag, pool_register_multiname(pool, l->abc_exception->exc_type));
1195 swf_SetU30(tag, pool_register_multiname(pool, l->abc_exception->var_name));
1196 l = l->next;
1197 }
1198
1199 traits_write(pool, tag, c->traits);
1200 }
1201
1202 /* free temporary codestat data again. Notice: If we were to write this
1203 file multiple times, this can also be shifted to abc_file_free() */
1204 for(t=0;t<file->method_bodies->num;t++) {
1205 abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1206 codestats_free(m->stats);m->stats=0;
1207 }
1208
1209 // --- start to write real tag --
1210
1211 tag = abctag;
1212
1213 if(tag->id == ST_DOABC) {
1214 swf_SetU32(tag, file->flags); // flags
1215 swf_SetString(tag, file->name);
1216 }
1217
1218 swf_SetU16(tag, 0x10); //version
1219 swf_SetU16(tag, 0x2e);
1220
1221 pool_write(pool, tag);
1222
1223 swf_SetBlock(tag, tmp->data, tmp->len);
1224
1225 swf_DeleteTag(0, tmp);
1226 return pool;
1227 }
1228
swf_WriteABC(TAG * abctag,void * code)1229 void swf_WriteABC(TAG*abctag, void*code)
1230 {
1231 pool_t*pool = writeABC(abctag, code, 0);
1232 pool_optimize(pool);
1233 swf_ResetTag(abctag, abctag->id);
1234 writeABC(abctag, code, pool);
1235 pool_destroy(pool);
1236 }
1237
abc_file_free(abc_file_t * file)1238 void abc_file_free(abc_file_t*file)
1239 {
1240 if(!file)
1241 return;
1242 int t;
1243 if(file->metadata) {
1244 for(t=0;t<file->metadata->num;t++) {
1245 array_t*items = (array_t*)array_getvalue(file->metadata, t);
1246 int s;
1247 for(s=0;s<items->num;s++) {
1248 free(array_getvalue(items, s));
1249 }
1250 array_free(items);
1251 }
1252 array_free(file->metadata);file->metadata=0;
1253 }
1254
1255 for(t=0;t<file->methods->num;t++) {
1256 abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
1257
1258 multiname_list_t*param = m->parameters;
1259 while(param) {
1260 multiname_destroy(param->multiname);param->multiname=0;
1261 param = param->next;
1262 }
1263 list_free(m->parameters);m->parameters=0;
1264
1265 constant_list_t*opt = m->optional_parameters;
1266 while(opt) {
1267 constant_free(opt->constant);opt->constant=0;
1268 opt = opt->next;
1269 }
1270 list_free(m->optional_parameters);m->optional_parameters=0;
1271
1272 if(m->name) {
1273 free((void*)m->name);m->name=0;
1274 }
1275 if(m->return_type) {
1276 multiname_destroy(m->return_type);
1277 }
1278 free(m);
1279 }
1280 array_free(file->methods);file->methods=0;
1281
1282 for(t=0;t<file->classes->num;t++) {
1283 abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
1284 traits_free(cls->traits);cls->traits=0;
1285 traits_free(cls->static_traits);cls->static_traits=0;
1286
1287 if(cls->classname) {
1288 multiname_destroy(cls->classname);
1289 }
1290 if(cls->superclass) {
1291 multiname_destroy(cls->superclass);
1292 }
1293
1294 multiname_list_t*i = cls->interfaces;
1295 while(i) {
1296 multiname_destroy(i->multiname);i->multiname=0;
1297 i = i->next;
1298 }
1299 list_free(cls->interfaces);cls->interfaces=0;
1300
1301 if(cls->protectedNS) {
1302 namespace_destroy(cls->protectedNS);
1303 }
1304 free(cls);
1305 }
1306 array_free(file->classes);file->classes=0;
1307
1308 for(t=0;t<file->scripts->num;t++) {
1309 abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
1310 traits_free(s->traits);s->traits=0;
1311 free(s);
1312 }
1313 array_free(file->scripts);file->scripts=0;
1314
1315 for(t=0;t<file->method_bodies->num;t++) {
1316 abc_method_body_t*body = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1317 code_free(body->code);body->code=0;
1318 traits_free(body->traits);body->traits=0;
1319
1320 abc_exception_list_t*ee = body->exceptions;
1321 while(ee) {
1322 abc_exception_t*e=ee->abc_exception;ee->abc_exception=0;
1323 e->from = e->to = e->target = 0;
1324 multiname_destroy(e->exc_type);e->exc_type=0;
1325 multiname_destroy(e->var_name);e->var_name=0;
1326 free(e);
1327 ee=ee->next;
1328 }
1329 list_free(body->exceptions);body->exceptions=0;
1330
1331 free(body);
1332 }
1333 array_free(file->method_bodies);file->method_bodies=0;
1334
1335 if(file->name) {
1336 free((void*)file->name);file->name=0;
1337 }
1338
1339 free(file);
1340 }
1341
swf_FreeABC(void * code)1342 void swf_FreeABC(void*code)
1343 {
1344 abc_file_t*file= (abc_file_t*)code;
1345 abc_file_free(file);
1346 }
1347
1348