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libtins/src/dot11/dot11_auth.cpp
2013-11-09 14:41:08 -03:00

127 lines
4.1 KiB
C++

/*
* Copyright (c) 2012, Matias Fontanini
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include "dot11/dot11_auth.h"
#ifdef HAVE_DOT11
#include <cassert>
#include <cstring>
namespace Tins {
/* Auth */
Dot11Authentication::Dot11Authentication(const address_type &dst_hw_addr,
const address_type &src_hw_addr)
: Dot11ManagementFrame(dst_hw_addr, src_hw_addr)
{
this->subtype(Dot11::AUTH);
memset(&_body, 0, sizeof(_body));
}
Dot11Authentication::Dot11Authentication(const uint8_t *buffer, uint32_t total_sz)
: Dot11ManagementFrame(buffer, total_sz)
{
uint32_t sz = management_frame_size();
buffer += sz;
total_sz -= sz;
if(total_sz < sizeof(_body))
throw malformed_packet();
memcpy(&_body, buffer, sizeof(_body));
buffer += sizeof(_body);
total_sz -= sizeof(_body);
parse_tagged_parameters(buffer, total_sz);
}
void Dot11Authentication::auth_algorithm(uint16_t new_auth_algorithm) {
this->_body.auth_algorithm = Endian::host_to_le(new_auth_algorithm);
}
void Dot11Authentication::auth_seq_number(uint16_t new_auth_seq_number) {
this->_body.auth_seq_number = Endian::host_to_le(new_auth_seq_number);
}
void Dot11Authentication::status_code(uint16_t new_status_code) {
this->_body.status_code = Endian::host_to_le(new_status_code);
}
uint32_t Dot11Authentication::header_size() const {
return Dot11ManagementFrame::header_size() + sizeof(_body);
}
uint32_t Dot11Authentication::write_fixed_parameters(uint8_t *buffer, uint32_t total_sz) {
uint32_t sz = sizeof(this->_body);
#ifdef TINS_DEBUG
assert(sz <= total_sz);
#endif
memcpy(buffer, &this->_body, sz);
return sz;
}
/* Deauth */
Dot11Deauthentication::Dot11Deauthentication(const address_type &dst_hw_addr,
const address_type &src_hw_addr)
: Dot11ManagementFrame(dst_hw_addr, src_hw_addr)
{
this->subtype(Dot11::DEAUTH);
memset(&_body, 0, sizeof(_body));
}
Dot11Deauthentication::Dot11Deauthentication(const uint8_t *buffer, uint32_t total_sz)
: Dot11ManagementFrame(buffer, total_sz) {
uint32_t sz = management_frame_size();
buffer += sz;
total_sz -= sz;
if(total_sz < sizeof(_body))
throw malformed_packet();
memcpy(&_body, buffer, sizeof(_body));
buffer += sizeof(_body);
total_sz -= sizeof(_body);
parse_tagged_parameters(buffer, total_sz);
}
void Dot11Deauthentication::reason_code(uint16_t new_reason_code) {
this->_body.reason_code = Endian::host_to_le(new_reason_code);
}
uint32_t Dot11Deauthentication::header_size() const {
return Dot11ManagementFrame::header_size() + sizeof(this->_body);
}
uint32_t Dot11Deauthentication::write_fixed_parameters(uint8_t *buffer, uint32_t total_sz) {
uint32_t sz = sizeof(this->_body);
#ifdef TINS_DEBUG
assert(sz <= total_sz);
#endif
memcpy(buffer, &this->_body, sz);
return sz;
}
} // namespace Tins
#endif // HAVE_DOT11