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Add input memory stream class and port some PDUs to use it

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This commit is contained in:
Matias Fontanini
2015-12-24 15:21:07 -08:00
parent 6d90b0ce32
commit 13c05fbdb1
20 changed files with 408 additions and 295 deletions
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14
src/eapol.cpp
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@@ -36,11 +36,15 @@
#include "eapol.h"
#include "rsn_information.h"
#include "exceptions.h"
#include "memory_helpers.h"
using Tins::Memory::InputMemoryStream;
namespace Tins {
EAPOL::EAPOL(uint8_t packet_type, EAPOLTYPE type)
: _header()
{
std::memset(&_header, 0, sizeof(_header));
_header.version = 1;
_header.packet_type = packet_type;
_header.type = (uint8_t)type;
@@ -48,14 +52,14 @@ EAPOL::EAPOL(uint8_t packet_type, EAPOLTYPE type)
EAPOL::EAPOL(const uint8_t *buffer, uint32_t total_sz)
{
if(total_sz < sizeof(_header))
throw malformed_packet();
std::memcpy(&_header, buffer, sizeof(_header));
InputMemoryStream stream(buffer, total_sz);
stream.read(_header);
}
EAPOL *EAPOL::from_bytes(const uint8_t *buffer, uint32_t total_sz) {
if(total_sz < sizeof(eapolhdr))
if (total_sz < sizeof(eapolhdr)) {
throw malformed_packet();
}
const eapolhdr *ptr = (const eapolhdr*)buffer;
uint32_t data_len = Endian::be_to_host<uint16_t>(ptr->length);
// at least 4 for fields always present