Blackberry COD file format

COD file is a proprietary file format developed by RIM. Generally speaking it is some kind of modified Java .class file. I could not find any information around except this resource , but unfortunately there was no clue how to dig into codfile format as well. So I had a quick look on it by myself and here is a brief description of what I could find so far.

A codfile contains four sections: header, code segment, data segment and tail. A header structure is quite simple:

typedef struct { // codfh
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;
} CODFILEHEADER;

SizeOf (CODFILEHEADER) = 0x2C;

The next section is a code segment it starts from offset 0x2C and has length from Code segment size field, then goes a data
segment with size from field Data segment size and then a tail.

Format of information in Code and Data segments is still required some work, but at least I have a something to begin with.