3 Actionscript generation and parsing routines
5 Extension module for the rfxswf library.
6 Part of the swftools package.
8 Copyright (c) 2001 Matthias Kramm <kramm@quiss.org>
10 This file is distributed under the GPL, see file COPYING for details
14 #include "../rfxswf.h"
29 C: constant pool header (byte)
30 c: constant pool entry (string)
31 s: skip (byte) (number of actions)
32 m: method (byte) swf_GetUrl2:(0=none, 1=get, 2=post)/GotoFrame2:(1=play)
33 b: branch (word) (number of bytes)
34 p (push): type(byte), type=0:string, type=1:double
35 {: define function (name (string), num (word), params (num strings), codesize (word)
40 {3,"GotoFrame", 0x81, "f"},
41 {4,"GotoFrame2", 0x9f, "m"}, // -1 (/Movieclip:3)
42 {3,"swf_GetUrl", 0x83, "ul"},
43 {4,"swf_GetUrl2", 0x9a, "m"}, //-2
44 {3,"NextFrame", 0x04, ""},
45 {3,"PreviousFrame", 0x05, ""},
48 {3,"ToggleQuality", 0x08, ""},
49 {3,"StopSounds", 0x09, ""},
50 {3,"WaitForFrame", 0x8a, "fs"},
51 {4,"WaitForFrame2", 0x8d, "s"}, // -1
52 {3,"SetTarget", 0x8b, "t"},
53 {4,"SetTarget2", 0x20, ""}, //-1
54 {3,"GotoLabel", 0x8c, "l"},
55 {4,"Add", 0x0a, ""}, // -2, +1
56 {4,"Multiply", 0x0c, ""}, // -2, +1
57 {4,"Divide", 0x0d, ""}, // -2, +1
58 {4,"Subtract", 0x0b, ""}, // -2, +1
59 {4,"Less", 0x0f, ""}, // -2, +1
60 {4,"Equals", 0x0e, ""}, // -2, +1
61 {4,"And", 0x10, ""}, // -2, +1
62 {4,"Or", 0x11, ""}, // -2, +1
63 {4,"Not", 0x12, ""}, // -1, +1
64 {4,"StringAdd", 0x21, ""}, // -2,+1
65 {4,"StringLength", 0x14, ""}, // -1, +1
66 {4,"MBStringLength", 0x31}, // -1, +1
67 {4,"StringEquals", 0x13, ""}, // -2, +1
68 {4,"StringLess", 0x29, ""}, //-2, +1
69 {4,"StringExtract", 0x15, ""}, // -3, +1
70 {4,"MBStringExtract", 0x35, ""}, //-3 +1
71 {4,"Push", 0x96, "p"}, // +1
72 {4,"Pop", 0x17, ""}, // -1
73 {4,"ToInteger", 0x18, ""}, // -1, +1
74 {4,"CharToAscii", 0x32, ""}, // -1, +1
75 {4,"AsciiToChar", 0x33, ""}, // -1, +1
76 {4,"MBCharToAscii", 0x36, ""}, // -1, +1
77 {4,"MBAsciiToChar", 0x37, ""}, // -1, +1
78 {4,"Jump", 0x99, "b"},
79 {4,"If", 0x9d, "b"}, // -1
80 {4,"Call", 0x9e, ""}, //-1 (frame label/number)
81 {4,"GetVariable", 0x1c,""}, // -1, +1
82 {4,"SetVariable", 0x1d,""}, // -2
83 {4,"GetProperty", 0x22,""}, //-2, +1
84 {4,"SetProperty", 0x23, ""}, // -3
85 {4,"RemoveSprite", 0x25, ""}, //-1
86 {4,"StartDrag", 0x27, ""}, // -2, -1, (-4)
87 {4,"EndDrag", 0x28, ""},
88 {4,"CloneSprite", 0x24, ""}, // -3
89 {4,"Trace", 0x26, ""}, //-1
90 {4,"GetTime", 0x34, ""}, //+1
91 {4,"RandomNumber", 0x30, ""}, //-1,+1
92 {5,"Modulo", 0x3f,""},
93 {5,"BitAnd", 0x60,""},
94 {5,"BitLShift", 0x63,""},
96 {5,"BitRShift", 0x64,""},
97 {5,"BitURShift", 0x65,""},
98 {5,"BitXor", 0x62,""},//66?
99 {5,"Decrement", 0x51,""},
100 {5,"Increment", 0x50,""},
101 {5,"PushDuplicate", 0x4c,""},
102 {5,"StackSwap", 0x4d,""}, //?
103 {5,"StoreRegister", 0x87,"r"},
104 {5,"CallFunction", 0x3d,""},
105 {5,"DefineFunction", 0x9b, "{"},
106 {5,"Return", 0x3e,""},
107 {5,"GetMember", 0x4e,""},
108 {5,"SetMember", 0x4f,""},
109 {5,"CallMethod", 0x52,""},
110 {5,"Constantpool", 0x88, "Cc"},
111 {5,"DefineLocal", 0x3c,""},
112 {5,"DefineLocal2", 0x41,""},
113 {5,"Makehash", 0x43, ""}, //??
114 {5,"Delete", 0x3a,""}, //?
115 {5,"Delete2", 0x3b,""},
116 {5,"Enumerate", 0x46,""},
117 {5,"Equals2", 0x49,""},
118 {5,"InitArray", 0x42,""}, // InitObject?
119 {5,"NewMethod", 0x53,""}, //?
120 {5,"NewObject", 0x40,""},
121 {5,"TargetPath", 0x45,""}, //?
122 {5,"With", 0x94, "o"},
123 {5,"ToNumber", 0x4a,""}, //?
124 {5,"ToString", 0x4b,""}, //?
125 {5,"TypeOf", 0x44,""},
129 static int definedactions = sizeof(actions)/sizeof(struct Action);
131 ActionTAG* swf_GetActions(TAG*tag)
136 ActionTAG*action = &tmp;
141 action->next = (ActionTAG*)malloc(sizeof(ActionTAG));
142 action->next->prev = action;
143 action->next->next = 0;
144 action = action->next;
150 length = swf_GetU16(tag);
154 data = malloc(length);
155 for(t=0;t<length;t++)
156 data[t] = swf_GetU8(tag);
161 action->len = length;
163 action->parent = tag;
168 void swf_SetActions(TAG*tag, ActionTAG*action)
172 swf_SetU8(tag, action->op);
174 swf_SetU16(tag, action->len);
176 swf_SetBlock(tag, action->data, action->len);
178 action = action->next;
182 int OpAdvance(char c, char*data)
189 return strlen(data)+1;
191 return strlen(data)+1;
193 return strlen(data)+1;
195 return strlen(data)+1;
207 return 1+strlen(data)+1; //string
208 } else if (type == 1) {
210 } else if (type == 2) {
212 } else if (type == 4) {
213 return 1+1; //register
214 } else if (type == 5) {
216 } else if (type == 6) {
218 } else if (type == 7) {
220 } else if (type == 8) {
229 /* TODO: this should be in swfdump.c */
230 void swf_DumpActions(ActionTAG*atag, char*prefix)
241 for(t=0;t<definedactions;t++)
242 if(actions[t].op == atag->op)
245 if(t==definedactions) {
246 printf("%s (%5d bytes) action: %02x\n", prefix, atag->len, op);
250 printf("%s (%5d bytes) action: %s", prefix, atag->len, actions[t].name);
251 cp = actions[t].flags;
253 if(atag->len) //TODO: check for consistency: should we have a length?
259 printf(" %d", *(U16*)data); //FIXME: le/be
262 printf(" URL:\"%s\"", data);
265 printf(" Target:\"%s\"", data);
268 printf(" Label:\"%s\"", data);
271 printf(" String:\"%s\"", data);
275 printf("(%d entries)", poollen);
278 printf(" +%d", data);
281 //m: method (byte) url:(0=none, 1=get, 2=datat)/gf2:(1=play)
285 printf(" %d", *(U16*)data);
291 printf(" String:\"%s\"", value);
292 } else if (type == 1) {
293 printf(" Float:\"%f\"", *(float*)value);
294 } else if (type == 2) {
296 } else if (type == 4) {
297 printf(" register:%d", value);
298 } else if (type == 5) {
299 printf(" %s", *value?"true":"false");
300 } else if (type == 6) {
301 printf(" %f", *(double*)value);
302 } else if (type == 7) {
303 printf(" %d", *(int*)value);
304 } else if (type == 8) {
305 printf(" Lookup:%d", *value);
309 data += OpAdvance(*cp, data);
310 if(*cp!='c' || !poollen)
316 if(data < atag->data + atag->len)
318 int nl = ((atag->data+atag->len)-data);
320 printf(" remainder of %d bytes:\"", nl);
323 printf("\\%d",data[t]);
325 printf("%c", data[t]);
334 static const char TYPE_URL = 1;
335 static const char TYPE_TARGET = 2;
336 static const char TYPE_STRING = 4;
338 int ActionEnumerate(ActionTAG*atag, char*(*callback)(char*), int type)
348 for(t=0;t<definedactions;t++)
349 if(actions[t].op == atag->op)
352 if(t==definedactions) {
357 cp = actions[t].flags;
363 U8 * replacement = 0;
369 replacelen = strlen(data);
371 replacement = callback(data); // may be null
377 replacelen = strlen(data);
379 replacement = callback(data); // may be null
385 replacelen = strlen(data);
387 replacement = callback(data); // may be null
397 char*value = &data[1];
398 if(datatype == 0) { //string
401 replacelen = strlen(value);
403 replacement = callback(value); // may be null
405 } else if (datatype == 8) { //lookup
409 data += OpAdvance(*cp, data);
410 if(*cp!='c' || !poollen)
417 int newlen = strlen(replacement);
418 char * newdata = malloc(atag->len - replacelen + newlen);
419 int rpos = replacepos - atag->data;
420 memcpy(newdata, atag->data, rpos);
421 memcpy(&newdata[rpos], replacement, newlen);
422 memcpy(&newdata[rpos+newlen], &replacepos[replacelen],
423 &data[atag->len] - &replacepos[replacelen]);
425 atag->data = newdata;
426 data = &atag->data[rpos+newlen+1];
434 void ActionEnumerateTargets(ActionTAG*atag, char*(*callback)(char*))
436 ActionEnumerate(atag, callback, TYPE_TARGET);
438 void ActionEnumerateStrings(ActionTAG*atag, char*(*callback)(char*))
440 ActionEnumerate(atag, callback, TYPE_STRING);
442 void ActionEnumerateURLs(ActionTAG*atag, char*(*callback)(char*))
444 ActionEnumerate(atag, callback, TYPE_URL);