COD file structure
==================
To write the javeloader application, I need to understand the format of COD file.
C structures :
--------------
typedef struct {
} codfile_header_t;
typedef struct {
int flashid;
uint section_number; //always 0
uint vtable_pointer; //always 0
time_t timestamp;
uint user_version;
uint fieldref_pointer;
ushort maxtype_list_size;
short reserved; //always 0xFF
int data_section; //always 0xFFFF
int module_info; //always 0xFFFF
ushort version;
ushort code_size;
ushort data_size;
ushort flags;
} code_header_t;
sizeof(code_header_t) = 0x2C;
typedef struct {
ubyte flags;
ubyte version;
ushort num_icalls;
ubyte num_modules;
ubyte num_classes ;
ushort exported_string_offset;
ushort data_bytes_offset;
ushort empty_field;
ushort class_definitions;
ushort array_of_unknow_fields[14];
ushort aliases;
ushort array_of_unknow_fields[22];
} data_header_t;
sizeof(data_header_t) = 0x34;
Scheme :
--------
+------------------------------------------+
| COD file header (1) |
+------------------------------------------+
| Code segment header |
| size = sizeof(code_header_t) = 0x2C |
+------------------------------------------+
| Code segment |
| size = code_header_t.code_size |
+------------------------------------------+
| Data segment header |
| size = sizeof(data_header_t) = 0x34 |
+------------------------------------------+
| Data segment |
| size = code_header_t.data_size |
+------------------------------------------+
+------------------------------------------+
| COD file header (2) |
+------------------------------------------+
| Code segment header |
. .
. .
. .
+------------------------------------------+
Sample (from Opera.cod) :
-------------------------
00000000 50 4B 03 04 0A 00 00 00 00 00-AB 5C 6A 39-BE 5C 58 D1 CC 0D PK.........\j9.\X...
COD size ^^^^^
00000014 01 00 CC 0D 01 00 19 00 04 00 ..........
^^^^^ ^^^^^^^^^^^^ ^^ empty byte (after the string)
COD size ^^ size of string
00000014 6F 70 65 72 65 74 74 65 2D 68 operette-h
[..............................
00000028 69 66 69 2D 34 2E 32 62 65 74 61 2E 63 6F 64 FE CA 00 00 ifi-4.2beta.cod....
................string........................] [..........] empty
00000028 DE .
0000003C C0 FF FF 00 00 00 00 00 00 00 00 E0 0E 18 49 00 00 00 00 00 ..............I.....
00000050 00 00 00 22 00 FF FF FF FF FF FF FF FF FF FF 4E 00 08 DC 98 ..."...........N....
[...]
00010DD8 A2 03 0C 0E 08 02 04 FD A2 03 4E 08 00 07 96 A3 03 1D 48 34 ..........N.......H4
00010DEC 12 08 01 03 B5 A3 03 08 04 04 E8 A3 03 25 08 05 03 A7 A4 03 .............%......
00010E00 00 00 00 00 00 00 00 .......
00010E00 50 4B 03 04 0A 00 00 00 00 00 AB 5C 6A PK.........\j
00010E14 39-D1 BD FC C9-1C DD 00 00-1C DD 00 00-1B 00 00 00 9................
^^ size of string
00010E14 6F 70 65 ope
00010E28 72 65 74 74 65 2D 68 69 66 69 2D 34 2E 32 62 65 74 61 2D 31 rette-hifi-4.2beta-1
00010E3C 2E 63 6F 64 .cod
00010E3C DE C0 FF FF 00 00 00 00 00 00 00 00 E0 0E 18 49 ...............I
00010E50 00 00 00 00 00 00 00 00 1F 00 FF FF FF FF FF FF FF FF FF FF ....................
00010E64 4E 00 D8 A1 18 3B 01 00 50 29 DE 29 06 80 F8 01 15 0D FF 00 N....;..P).)........
00010E78 00 20 0C FF FF 4D 0C 46 2F 15 0D FF FF 79 0E FF FF 82 0E FF . ...M.F/....y......
00010E8C FF 62 07 50 29 50 29 23 11 18 00 05 13 00 08 0E 6E 02 01 0A .b.P)P)#........n...
00010EA0 00 28 CC 0C 01 FF FF 02 69 00 03 00 6D 00 03 00 A0 04 DF A1 .(......i...m.......
00010EB4 0A 6D 00 03 00 04 FF 01 00 01 55 28 1C 17 07 00 AE 11 CF 56 .m........U(.......V
[...]
0001EB54 00 00 00 00 00 00 00 00 50 4B 03 04 0A 00 00 00 00 00 AB 5C ........PK.........\
0001EB68 6A 39-24 41 BE 50 5C B0 00 00 5C B0 00-00-1B-00- 00-00 6F 70 j9$A.P\...\.......op
0001EB7C 65 72 65 74 74 65 2D 68 69 66 69 2D 34 2E 32 62 65 74 61 2D erette-hifi-4.2beta-
0001EB90 32 2E 63 6F 64 DE C0 FF FF 00 00 00 00 00 00 00 00 E0 0E 18 2.cod...............
Sample (from Metro.cod) :
-------------------------
00000000 50 4B 03 04 0A 00 00 00 00 00-A0 00 51 35-BA 9F 99 5D-30 CE PK..........Q5...]0.
00000014 00 00-30 CE 00-00-15-00--04-00-4D 65 74 72 6F 56 69 65 77 65 ..0.......MetroViewe
00000028 72 2E 50 61 72 69 73 2E 63 6F 64 FE CA 00 00 DE C0 FF FF 00 r.Paris.cod.........
0000003C 00 00 00 00 00 00 00 0F 10 34 45 00 00 00 00 00 00 00 00 21 .........4E........!
0000CE54 6F 90 02 03 0F 03 A8 0F 03 04 00 02 AA 10 00 00 00 00 00 50 o..................P
0000CE68 4B 03 04 0A 00 00 00 00 00 A0 00 51 35 7A C4 FE 22-34 B3-00 K..........Q5z.."4..
0000CE7C 00-34 B3-00--00-17-00-00--00-4D 65 74 72 6F 56 69 65 77 65 72 .4.......MetroViewer
0000CE90 2E 50 61 72 69 73 2D 31 2E 63 6F 64 DE C0 FF FF 00 00 00 00 .Paris-1.cod........
0000CEA4 00 00 00 00 0F 10 34 45 00 00 00 00 00 00 00 00 05 00 FF FF ......4E............
