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Added EAPOL and RC4EAPOL constructors from byte buffer, it's untested. Fixed getters endianess in EAPOL.

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This commit is contained in:
Matias Fontanini
2011-08-28 15:21:12 -03:00
parent 4d4defeed4
commit b8fdf57353
2 changed files with 69 additions and 7 deletions
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43
src/eapol.cpp
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@@ -1,14 +1,32 @@
#include <cstring>
#include <cassert>
#include <stdexcept>
#include "eapol.h"
#include "utils.h"
Tins::EAPOL::EAPOL(uint8_t packet_type, uint8_t type) : PDU(0xff) {
Tins::EAPOL::EAPOL(uint8_t packet_type, EAPOLTYPE type) : PDU(0xff) {
std::memset(&_header, 0, sizeof(_header));
_header.version = 1;
_header.packet_type = packet_type;
_header.type = type;
_header.type = (uint8_t)type;
}
Tins::EAPOL::EAPOL(const uint8_t *buffer, uint32_t total_sz) : PDU(0xff) {
if(total_sz < sizeof(_header))
throw std::runtime_error("Not enough size for an EAPOL header in the buffer.");
std::memcpy(&_header, buffer, sizeof(_header));
}
Tins::EAPOL *Tins::EAPOL::from_bytes(const uint8_t *buffer, uint32_t total_sz) {
if(total_sz < sizeof(eapolhdr))
throw std::runtime_error("Not enough size for an EAPOL header in the buffer.");
const eapolhdr *ptr = (const eapolhdr*)buffer;
switch(ptr->type) {
case RC4:
return new RC4EAPOL(buffer, total_sz);
break;
}
return 0;
}
void Tins::EAPOL::version(uint8_t new_version) {
@@ -38,10 +56,27 @@ void Tins::EAPOL::write_serialization(uint8_t *buffer, uint32_t total_sz, const
/* RC4EAPOL */
Tins::RC4EAPOL::RC4EAPOL() : EAPOL(0x03, 0x01), _key(0), _key_size(0) {
Tins::RC4EAPOL::RC4EAPOL() : EAPOL(0x03, RC4), _key(0), _key_size(0) {
std::memset(&_header, 0, sizeof(_header));
}
Tins::RC4EAPOL::RC4EAPOL(const uint8_t *buffer, uint32_t total_sz) : EAPOL(buffer, total_sz) {
buffer += sizeof(eapolhdr);
total_sz -= sizeof(eapolhdr);
if(total_sz < sizeof(_header))
throw std::runtime_error("Not enough size for an EAPOL header in the buffer.");
std::memcpy(&_header, buffer, sizeof(_header));
buffer += sizeof(_header);
total_sz -= sizeof(_header);
if(total_sz == key_length()) {
_key = new uint8_t[total_sz];
_key_size = total_sz;
std::memcpy(_key, buffer, total_sz);
}
else
_key = 0;
}
Tins::RC4EAPOL::~RC4EAPOL() {
delete[] _key;
}