I was wondering if I could have some recommendations on how to take data from a buffer and load them into a struct. For example, I have dealing with a DNS response buffer. I need to populate a DNS answer struct so that I can interpret the data. So far, I have the following:
int DugHelp::getPacket() {
memset(buf, 0, 2000); // clearing the buffer to make sure no "garbage" is there
if (( n = read(sock, buf, 2000)) < 0 {
exit(-1);
}
// trying to populate the DNS_Answers struct
dnsAnswer = (struct DNS_Answer *) & buf;
. . .
}
This is the struct that I have defined:
struct DNS_Answer{
unsigned char name [255];
struct {
unsigned short type;
unsigned short _class;
unsigned int ttl;
unsigned in len;
} types;
unsigned char data [2000];
};
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