Thread: Creating struct from existing data

I'm not sure how to describe this. I have the beginning of my struct:

Code:

struct tapData {
	guchar buddy[20];
	char message[200];
};

and I need to expand it to include additional data. Right now I'm trying to add the internal and external IPs. I see what I believe the data I need in this block:

Code:

static const aim_tlv rendezvous_tlvs[] = {
	{ RENDEZVOUS_TLV_CHANNEL, "Rendezvous ICBM Channel", dissect_aim_tlv_value_uint16 },
	{ RENDEZVOUS_TLV_IP_ADDR, "Rendezvous IP", dissect_aim_tlv_value_ipv4 },
	{ RENDEZVOUS_TLV_INT_IP, "Internal IP", dissect_aim_tlv_value_ipv4 },
	{ RENDEZVOUS_TLV_EXT_IP, "External IP", dissect_aim_tlv_value_ipv4 },
	...
	{ 0, NULL, NULL },
};

I'm not familiar with the syntax and how I should add it to my struct, or if thats where I should be looking at all. I've attached the file that I'm working with. I get the buddy on line 368. Thanks for all the help, this forum has been wonderful.

If you want to add fields to your struct, then do so. I don't particularly care enough to determine whether "dissect_aim_tlv_value_ipv4" is an actual type name, or a #define for something; but you'll have to decide what type these IP fields should be, and what name you want to give them.

The RENDEZVOUS is a #define, the dissect_aim_tlv_value_ipv4 is a method defined in another header file. It looks like the data is eventually stored in some type of tree, though where and how to get it I have no idea.

Does a function pointer act like a variable? Should I treat it as one?

I would guess you want to find the source for those functions, look at what they do, decide whether you can/want to call those functions directly yourself, or repurpose the code inside them for whatever it is you want to do, or none of these.