fixed a security bug in logging, added basic xml support to as3 compiler
[swftools.git] / lib / as3 / import.c
1 /* import.c
2
3    Extension module for the rfxswf library.
4    Part of the swftools package.
5
6    Copyright (c) 2009 Matthias Kramm <kramm@quiss.org>
7  
8    This program is free software; you can redistribute it and/or modify
9    it under the terms of the GNU General Public License as published by
10    the Free Software Foundation; either version 2 of the License, or
11    (at your option) any later version.
12
13    This program is distributed in the hope that it will be useful,
14    but WITHOUT ANY WARRANTY; without even the implied warranty of
15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16    GNU General Public License for more details.
17
18    You should have received a copy of the GNU General Public License
19    along with this program; if not, write to the Free Software
20    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
21
22 #include "import.h"
23 #include "abc.h"
24 #include "registry.h"
25 #include "common.h"
26 #include "common.h"
27 #include "tokenizer.h"
28 #include "../os.h"
29
30 static void import_code(void*_abc, char*filename, int pass);
31
32 void as3_import_abc(char*filename)
33 {
34     TAG*tag = swf_InsertTag(0, ST_RAWABC);
35     memfile_t*file = memfile_open(filename);
36     tag->data = file->data;
37     tag->len = file->len;
38     abc_file_t*abc = swf_ReadABC(tag);
39     import_code(abc, filename, 0);
40     import_code(abc, filename, 1);
41     swf_FreeABC(abc);
42     memfile_close(file);
43     free(tag);
44 }
45
46 void as3_import_swf(char*filename)
47 {
48     SWF* swf = swf_OpenSWF(filename);
49     if(!swf)
50         return;
51     TAG*tag = swf->firstTag;
52
53     /* pass 1 */
54     while(tag) {
55         if(tag->id == ST_DOABC || tag->id == ST_RAWABC) {
56             abc_file_t*abc = swf_ReadABC(tag);
57             import_code(abc, filename, 0);
58             swf_FreeABC(abc);
59         }
60         tag = tag->next;
61     }
62
63     tag = swf->firstTag;
64     /* pass 2 */
65     while(tag) {
66         if(tag->id == ST_DOABC || tag->id == ST_RAWABC) {
67             abc_file_t*abc = swf_ReadABC(tag);
68             import_code(abc, filename, 1);
69             swf_FreeABC(abc);
70         }
71         tag = tag->next;
72     }
73
74     swf_FreeTags(swf);
75     free(swf);
76 }
77
78 void as3_import_file(char*filename)
79 {
80     FILE*fi = fopen(filename, "rb");
81     if(!fi) return;
82     char head[3];
83     fread(head, 3, 1, fi);
84     fclose(fi);
85     if(!strncmp(head, "FWS", 3) ||
86        !strncmp(head, "CWS", 3)) {
87         as3_import_swf(filename);
88     } else {
89         as3_import_abc(filename);
90     }
91 }
92
93 static int compare_traits(const void*v1, const void*v2)
94 {
95     trait_t* x1 = *(trait_t**)v1;
96     trait_t* x2 = *(trait_t**)v2;
97     int i = strcmp(x1->name->ns->name, x2->name->ns->name);
98     if(i)
99         return i;
100     return strcmp(x1->name->name, x2->name->name);
101 }
102
103 static classinfo_t*resolve_class(char*filename, char*what, multiname_t*n)
104 {
105     if(!n) return 0;
106     if(!n->name[0]) return 0;
107     if(!strcmp(n->name, "void")) 
108         return &voidclass;
109
110     classinfo_t*c = 0;
111     if(n->ns && n->ns->name) {
112         c = (classinfo_t*)registry_find(n->ns->name, n->name);
113     } else if(n->namespace_set) {
114         namespace_list_t*s = n->namespace_set->namespaces;
115         while(s) {
116             c = (classinfo_t*)registry_find(s->namespace->name, n->name);
117             if(c)
118                 break;
119             s = s->next;
120         }
121     }
122
123     if(!c) {
124         as3_warning("import %s: couldn't resolve %s %s.%s", filename, what, n->ns->name, n->name);
125         return 0;
126     }
127     if(c->kind != INFOTYPE_CLASS)
128         as3_warning("import %s: %s %s resolves to something that's not a class", filename, what, n->name);
129     return c;
130 }
131
132 static void import_code(void*_abc, char*filename, int pass)
133 {
134     abc_file_t*abc = _abc;
135     int t;
136     if(pass==0) {
137         for(t=0;t<abc->classes->num;t++) {
138             abc_class_t*cls = array_getvalue(abc->classes, t);
139             U8 access = cls->classname->ns->access;
140             if(access==ACCESS_PRIVATE ||
141                access==ACCESS_PACKAGEINTERNAL)
142                 continue;
143             //if(!strncmp(cls->classname->ns->name, "__AS3", 5))
144             //    continue;
145
146             const char*package = strdup(cls->classname->ns->name);
147             const char*name = strdup(cls->classname->name);
148
149             multiname_list_t*i=cls->interfaces;
150             classinfo_t*c = classinfo_register(access, package, name, list_length(i));
151             c->flags|=FLAG_BUILTIN;
152
153             if(cls->flags & CLASS_FINAL)
154                 c->flags |= FLAG_FINAL;
155             if(cls->flags & CLASS_INTERFACE)
156                 c->flags |= FLAG_INTERFACE;
157             if(!(cls->flags & CLASS_SEALED))
158                 c->flags |= FLAG_DYNAMIC;
159         }
160         return;
161     }
162     
163     for(t=0;t<abc->classes->num;t++) {
164         abc_class_t*cls = array_getvalue(abc->classes, t);
165         const char*package = strdup(cls->classname->ns->name);
166         const char*name = strdup(cls->classname->name);
167         classinfo_t*c = (classinfo_t*)registry_find(package, name);
168         if(!c) continue;
169
170         int nr = 0;
171         multiname_list_t*i = cls->interfaces;
172         while(i) {
173             c->interfaces[nr++] = resolve_class(filename, "interface", i->multiname);
174             i = i->next;
175         }
176         c->superclass = resolve_class(filename, "superclass", cls->superclass);
177       
178         trait_list_t*l=0;
179         char is_static = 0;
180         l = cls->traits;
181         if(!l) {
182             l = cls->static_traits;
183             is_static = 1;
184         }
185         dict_t*names = dict_new();
186         while(l) {
187             trait_t*trait = l->trait;
188             U8 access = trait->name->ns->access;
189
190             if(access==ACCESS_PRIVATE)
191                 goto cont;
192             const char*name = trait->name->name;
193             char* ns= ACCESS_NAMESPACE?strdup(trait->name->ns->name):"";
194             if(registry_findmember(c, ns, name, 0))
195                 goto cont;
196             name = strdup(name);
197
198             memberinfo_t*s = 0;
199             if(trait->kind == TRAIT_METHOD) {
200                 s = (memberinfo_t*)methodinfo_register_onclass(c, access, ns, name);
201                 s->return_type = resolve_class(filename, "return type", trait->method->return_type);
202                 dict_put(names, name, 0);
203             } else if(trait->kind == TRAIT_SLOT) {
204                 s = (memberinfo_t*)varinfo_register_onclass(c, access, ns, name);
205                 s->type = resolve_class(filename, "type", trait->type_name);
206                 dict_put(names, name, 0);
207             } else if(trait->kind == TRAIT_GETTER) {
208                 s = (memberinfo_t*)varinfo_register_onclass(c, access, ns, name);
209                 s->type = resolve_class(filename, "type", trait->method->return_type);
210                 dict_put(names, name, 0);
211             } else if(trait->kind == TRAIT_CONST) {
212                 /* some variables (e.g. XML.length) are apparently both a method and a slot.
213                    needs split of static/non-static first */
214                 if(!dict_contains(names, name)) {
215                     varinfo_t*v = (varinfo_t*)varinfo_register_onclass(c, access, ns, name);
216                     v->type = resolve_class(filename, "type", trait->type_name);
217                     v->flags |= FLAG_CONST;
218                     /* leave this alone for now- it blows up the file too much 
219                     v->value = constant_clone(trait->value);*/
220                     s = (memberinfo_t*)v;
221                     dict_put(names, name, 0);
222                 } else 
223                     goto cont;
224
225             } else {
226                 goto cont;
227             }
228
229             s->flags = is_static?FLAG_STATIC:0;
230             s->flags |= FLAG_BUILTIN;
231             s->parent = c;
232
233             cont:
234             l = l->next;
235             if(!l && !is_static) {
236                 l = cls->static_traits;
237                 is_static = 1;
238             }
239         }
240         dict_destroy(names);
241     }
242
243 #   define IS_PUBLIC_MEMBER(trait) ((trait)->kind != TRAIT_CLASS && (trait)->name->ns->access != ACCESS_PRIVATE)
244
245     /* count public functions */
246     int num_methods=0;
247     for(t=0;t<abc->scripts->num;t++) {
248         trait_list_t*l = ((abc_script_t*)array_getvalue(abc->scripts, t))->traits;
249         for(;l;l=l->next) {
250             num_methods += IS_PUBLIC_MEMBER(l->trait);
251         }
252     }
253     trait_t**traits = (trait_t**)malloc(num_methods*sizeof(trait_t*));
254     num_methods=0;
255     for(t=0;t<abc->scripts->num;t++) {
256         trait_list_t*l = ((abc_script_t*)array_getvalue(abc->scripts, t))->traits;
257         for(;l;l=l->next) {
258             if(IS_PUBLIC_MEMBER(l->trait)) {
259                 traits[num_methods++] = l->trait;
260             }
261         }
262     }
263     qsort(traits, num_methods, sizeof(trait_t*), compare_traits);
264     for(t=0;t<num_methods;t++) {
265         trait_t*trait = traits[t];
266         if(IS_PUBLIC_MEMBER(trait)) {
267             U8 access = trait->name->ns->access;
268             const char*package = strdup(trait->name->ns->name);
269             const char*name = strdup(trait->name->name);
270             char np = 0;
271             memberinfo_t*m = 0;
272             if(trait->kind == TRAIT_METHOD) {
273                 m = (memberinfo_t*)methodinfo_register_global(access, package, name);
274                 m->return_type = resolve_class(filename, "return type", trait->method->return_type);
275             } else {
276                 varinfo_t*v = varinfo_register_global(access, package, name);
277                 v->type = resolve_class(filename, "type", trait->type_name);
278                 v->value = constant_clone(trait->value);
279                 v->flags |= trait->kind==TRAIT_CONST?FLAG_CONST:0;
280                 m = (memberinfo_t*)v;
281             }
282             m->flags |= FLAG_BUILTIN;
283             m->parent = 0;
284         }
285     }
286 }
287
288 void as3_import_code(void*_abc)
289 {
290     import_code(_abc, "", 0);
291     import_code(_abc, "", 1);
292 }