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IEEE802_11 data packets now can be created from raw buffers. Not tested yet.

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This commit is contained in:
Matias Fontanini
2011-08-25 22:22:57 -03:00
parent 9e56c3681e
commit 479d6c4acd
3 changed files with 32 additions and 1 deletions
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19
src/snap.cpp
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@@ -21,11 +21,14 @@
#include <cstring>
#include <cassert>
#include <stdexcept>
#ifndef WIN32
#include <net/ethernet.h>
#endif
#include "snap.h"
#include "utils.h"
#include "arp.h"
#include "ip.h"
Tins::SNAP::SNAP(PDU *child) : PDU(0xff, child) {
@@ -34,6 +37,22 @@ Tins::SNAP::SNAP(PDU *child) : PDU(0xff, child) {
_snap.id = 3;
}
Tins::SNAP::SNAP(const uint8_t *buffer, uint32_t total_sz) : PDU(0xff) {
if(total_sz < sizeof(_snap))
throw std::runtime_error("Not enough size for a SNAP header in the buffer.");
std::memcpy(&_snap, buffer, sizeof(_snap));
buffer += sizeof(_snap);
total_sz -= sizeof(_snap);
switch(Utils::net_to_host_s(_snap.eth_type)) {
case ETHERTYPE_IP:
inner_pdu(new Tins::IP(buffer, total_sz));
break;
case ETHERTYPE_ARP:
inner_pdu(new Tins::ARP(buffer, total_sz));
break;
};
}
uint32_t Tins::SNAP::header_size() const {
return sizeof(_snap);
}