3rd-party/libtins
1
0
Fork 0
mirror of https://github.com/mfontanini/libtins synced 2026-01-23 02:35:57 +01:00
Code Issues Releases Wiki Activity

LLC almost works

Browse Source
This commit is contained in:
Santiago Alessandri
2012-03-19 12:04:55 -03:00
parent 937a4d66cc
commit 01a7b812df
6 changed files with 710 additions and 60 deletions
Download Patch File Download Diff File Expand all files Collapse all files

221
include/ieee802-3.h Normal file
View File

@@ -0,0 +1,221 @@
/*
* libtins is a net packet wrapper library for crafting and
* interpreting sniffed packets.
*
* Copyright (C) 2011 Nasel
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __IEEE802_3_H
#define __IEEE802_3_H
#include <stdint.h>
#include <stdexcept>
#include "pdu.h"
#include "utils.h"
namespace Tins {
/**
* \brief Class representing an Ethernet II PDU.
*/
class IEEE802_3 : public PDU {
public:
/**
* \brief Represents the IEEE802_3 broadcast address.
*/
static const uint8_t* BROADCAST;
/**
* \brief IEEE802_3 hardware address size.
*/
static const unsigned ADDR_SIZE = 6;
/**
* \brief Constructor for creating an IEEE802_3 PDU
*
* Constructor that builds an IEEE802_3 PDU taking the interface name,
* destination's and source's MAC.
*
* \param iface string containing the interface's name from where to send the packet.
* \param dst_hw_addr uint8_t array of 6 bytes containing the destination's MAC(optional).
* \param src_hw_addr uint8_t array of 6 bytes containing the source's MAC(optional).
* \param child PDU* with the PDU contained by the ethernet PDU (optional).
*/
IEEE802_3(const std::string& iface, const uint8_t* dst_hw_addr = 0, const uint8_t* src_hw_addr = 0, PDU* child = 0) throw (std::runtime_error);
/**
* \brief Constructor for creating an IEEE802_3 PDU
*
* Constructor that builds an IEEE802_3 PDU taking the interface index,
* destination's and source's MAC.
*
* \param iface_index const uint32_t with the interface's index from where to send the packet.
* \param dst_hw_addr uint8_t array of 6 bytes containing the destination's MAC(optional).
* \param src_hw_addr uint8_t array of 6 bytes containing the source's MAC(optional).
* \param child PDU* with the PDU contained by the ethernet PDU (optional).
*/
IEEE802_3(uint32_t iface_index, const uint8_t* dst_hw_addr = 0, const uint8_t* src_hw_addr = 0, PDU* child = 0);
/**
* \brief Constructor which creates an IEEE802_3 object from a buffer and adds all identifiable
* PDUs found in the buffer as children of this one.
* \param buffer The buffer from which this PDU will be constructed.
* \param total_sz The total size of the buffer.
*/
IEEE802_3(const uint8_t *buffer, uint32_t total_sz);
/* Getters */
/**
* \brief Getter for the destination's mac address.
*
* \return Returns the destination's mac address as a constant uint8_t pointer.
*/
inline const uint8_t* dst_addr() const { return _eth.dst_mac; }
/**
* \brief Getter for the source's mac address.
*
* \return Returns the source's mac address as a constant uint8_t pointer.
*/
inline const uint8_t* src_addr() const { return _eth.src_mac; }
/**
* \brief Getter for the interface.
*
* \return Returns the interface's index as an uint32_t.
*/
inline uint32_t iface() const { return this->_iface_index; }
/**
* \brief Getter for the length field.
* \return The length field value.
*/
inline uint16_t length() const { return Utils::net_to_host_s(_eth.length); };
/* Setters */
/**
* \brief Setter for the destination's MAC.
*
* \param new_dst_mac uint8_t array of 6 bytes containing the new destination's MAC.
*/
void dst_addr(const uint8_t* new_dst_mac);
/**
* \brief Setter for the source's MAC.
*
* \param new_src_mac uint8_t array of 6 bytes containing the new source's MAC.
*/
void src_addr(const uint8_t* new_src_mac);
/**
* \brief Setter for the interface.
*
* \param new_iface_index uint32_t containing the new interface index.
*/
void iface(uint32_t new_iface_index);
/**
* \brief Setter for the interface.
*
* \param new_iface string reference containing the new interface name.
*/
void iface(const std::string& new_iface) throw (std::runtime_error);
/**
* \brief Setter for the length field.
*
* \param new_length uint16_t with the new value of the length field.
*/
void length(uint16_t new_length);
/* Virtual methods */
/**
* \brief Returns the IEEE802_3 frame's header length.
*
* \return An uint32_t with the header's size.
* \sa PDU::header_size()
*/
uint32_t header_size() const;
/**
* \sa PDU::send()
*/
bool send(PacketSender* sender);
/** \brief Check wether ptr points to a valid response for this PDU.
*
* \sa PDU::matches_response
* \param ptr The pointer to the buffer.
* \param total_sz The size of the buffer.
*/
bool matches_response(uint8_t *ptr, uint32_t total_sz);
/** \brief Receives a matching response for this packet.
*
* \sa PDU::recv_response
* \param sender The packet sender which will receive the packet.
*/
PDU *recv_response(PacketSender *sender);
/**
* \brief Getter for the PDU's type.
* \sa PDU::pdu_type
*/
PDUType pdu_type() const { return PDU::IEEE802_3; }
/** \brief Clones this pdu, filling the corresponding header with data
* extracted from a buffer.
*
* \param ptr The pointer to the from from which the data will be extracted.
* \param total_sz The size of the buffer.
* \return The cloned PDU.
* \sa PDU::clone_packet
*/
PDU *clone_packet(const uint8_t *ptr, uint32_t total_sz);
/**
* \brief Clones this PDU.
*
* \sa PDU::clone_pdu
*/
PDU *clone_pdu() const;
private:
/**
* Struct that represents the Ethernet II header
*/
struct ethhdr {
uint8_t dst_mac[ADDR_SIZE];
uint8_t src_mac[ADDR_SIZE];
uint16_t length;
} __attribute__((__packed__));
void copy_fields(const IEEE802_3 *other);
void write_serialization(uint8_t *buffer, uint32_t total_sz, const PDU *parent);
ethhdr _eth;
uint32_t _iface_index;
};
};
#endif

92
include/llc.h
View File

@@ -58,32 +58,38 @@ namespace Tins {
*/
enum ModifierFunctions {
UI = 0x00,
XID = 0xAC,
TEST = 0xE0,
SABME = 0x6C,
DISC = 0x40,
UA = 0x60,
DM = 0x0C,
FRMR = 0x84
XID = 0x1D,
TEST = 0x07,
SABME = 0x1E,
DISC = 0x02,
UA = 0x06,
DM = 0x18,
FRMR = 0x11
};
/**
* \brief LLC Supervisory functions
*/
enum SupervisoryFunctions {
RECEIVE_READY = 0x00,
REJECT = 0x08,
RECEIVE_NOT_READY = 0x04
RECEIVE_READY = 0,
REJECT = 2,
RECEIVE_NOT_READY = 1
};
/**
* \brief Creates an instance of LLC
* This constructor sets the dsap and ssap fields to 0xaa, and
* the id field to 3.
* \param child The child PDU.(optional)
*/
LLC(PDU *child = 0);
/**
* \brief Creates an instance of LLC, setting the dsap and ssap.
* The control field is set all to 0.
* @param dsap The dsap value to be set.
* @param ssap The ssap value to be set.
*/
LLC(uint8_t dsap, uint8_t ssap, PDU* child = 0);
/**
* \brief Constructor which creates a LLC object from a buffer and adds all identifiable
* PDUs found in the buffer as children of this one.
@@ -209,7 +215,7 @@ namespace Tins {
* \brief Getter for the LLC frame format type.
* \return The LLC frame format.
*/
inline uint8_t type() {return control_field & 0x03; }
inline uint8_t type() {return _type; }
/**
* \brief Getter for sender send sequence number.
@@ -217,7 +223,7 @@ namespace Tins {
* \return The sender send sequence number if format is INFORMATION else 0.
*/
inline uint8_t send_seq_number() {
return (type() == INFORMATION) ? (control_field & 0x00FE) >> 1 : 0;
return (type() == INFORMATION) ? (control_field.info.send_seq_num) : 0;
}
/**
@@ -227,10 +233,14 @@ namespace Tins {
* INFORMATION or SUPERVISORY else 0.
*/
inline uint8_t receive_seq_number() {
if (type() == INFORMATION || type() == SUPERVISORY)
return (control_field & 0xFE00) >> 9;
else
return 0;
switch (type()) {
case INFORMATION:
return control_field.info.recv_seq_num;
case SUPERVISORY:
return control_field.super.recv_seq_num;
case UNNUMBERED:
return 0;
}
}
/**
@@ -238,10 +248,14 @@ namespace Tins {
* \return Whether the poll/final flag is set.
*/
inline bool poll_final() {
if (type() == UNNUMBERED)
return control_field & 0x10;
else
return control_field & 0x0100;
switch (type()) {
case UNNUMBERED:
return control_field.unnumbered.poll_final_bit;
case INFORMATION:
return control_field.info.poll_final_bit;
case SUPERVISORY:
return control_field.super.poll_final_bit;
}
}
/**
@@ -251,7 +265,7 @@ namespace Tins {
*/
inline uint8_t supervisory_function() {
if (type() == SUPERVISORY)
return control_field & 0x0C;
return control_field.super.supervisory_func;
return 0;
}
@@ -262,7 +276,7 @@ namespace Tins {
*/
inline uint8_t modifier_function() {
if (type() == UNNUMBERED)
return control_field & 0xEC;
return (control_field.unnumbered.mod_func1 << 3) + control_field.unnumbered.mod_func2;
return 0;
}
@@ -297,12 +311,40 @@ namespace Tins {
uint8_t ssap;
} __attribute__((__packed__));
struct info_control_field {
uint16_t
type_bit:1,
send_seq_num:7,
poll_final_bit:1,
recv_seq_num:7;
} __attribute__((__packed__));
struct super_control_field {
uint16_t type_bit:2,
supervisory_func:2,
unused:4,
poll_final_bit:1,
recv_seq_num:7;
} __attribute__((__packed__));
struct un_control_field {
uint8_t type_bits:2,
mod_func1:2,
poll_final_bit:1,
mod_func2:3;
} __attribute__((__packed__));
void copy_fields(const LLC *other);
void write_serialization(uint8_t *buffer, uint32_t total_sz, const PDU *parent);
llchdr _header;
uint8_t control_field_length;
uint16_t control_field;
union {
info_control_field info;
super_control_field super;
un_control_field unnumbered;
} control_field;
Format _type;
uint8_t information_field_length;
std::list<std::pair<uint8_t,uint8_t*> > information_fields;
};

1
include/pdu.h
View File

@@ -52,6 +52,7 @@ namespace Tins {
enum PDUType {
RAW,
ETHERNET_II,
IEEE802_3,
RADIOTAP,
DOT11,
DOT11_ACK,

169
src/ieee802-3.cpp Normal file
View File

@@ -0,0 +1,169 @@
/*
* libtins is a net packet wrapper library for crafting and
* interpreting sniffed packets.
*
* Copyright (C) 2011 Nasel
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <cassert>
#include <cstring>
#include <stdexcept>
#ifndef WIN32
#include <net/ethernet.h>
#include <netpacket/packet.h>
#endif
#include "ieee802-3.h"
#include "llc.h"
#include "utils.h"
const uint8_t* Tins::IEEE802_3::BROADCAST = (const uint8_t*)"\xff\xff\xff\xff\xff\xff";
const uint32_t Tins::IEEE802_3::ADDR_SIZE;
Tins::IEEE802_3::IEEE802_3(const std::string& iface, const uint8_t* dst_hw_addr, const uint8_t* src_hw_addr, PDU* child) throw (std::runtime_error) : PDU(ETHERTYPE_IP, child) {
memset(&_eth, 0, sizeof(ethhdr));
if(dst_hw_addr)
this->dst_addr(dst_hw_addr);
if(src_hw_addr)
this->src_addr(src_hw_addr);
this->iface(iface);
this->_eth.length = 0;
}
Tins::IEEE802_3::IEEE802_3(uint32_t iface_index, const uint8_t* dst_hw_addr, const uint8_t* src_hw_addr, PDU* child) : PDU(ETHERTYPE_IP, child) {
memset(&_eth, 0, sizeof(ethhdr));
if(dst_hw_addr)
this->dst_addr(dst_hw_addr);
if(src_hw_addr)
this->src_addr(src_hw_addr);
this->iface(iface_index);
this->_eth.length = 0;
}
Tins::IEEE802_3::IEEE802_3(const uint8_t *buffer, uint32_t total_sz) : PDU(ETHERTYPE_IP) {
if(total_sz < sizeof(ethhdr))
throw std::runtime_error("Not enough size for an ethernetII header in the buffer.");
memcpy(&_eth, buffer, sizeof(ethhdr));
PDU *next = 0;
buffer += sizeof(ethhdr);
total_sz -= sizeof(ethhdr);
if(total_sz) {
next = new Tins::LLC(buffer, total_sz);
inner_pdu(next);
}
}
void Tins::IEEE802_3::dst_addr(const uint8_t* new_dst_mac) {
memcpy(_eth.dst_mac, new_dst_mac, sizeof(_eth.dst_mac));
}
void Tins::IEEE802_3::src_addr(const uint8_t* new_src_mac) {
memcpy(_eth.src_mac, new_src_mac, sizeof(_eth.src_mac));
}
void Tins::IEEE802_3::iface(uint32_t new_iface_index) {
_iface_index = new_iface_index;
}
void Tins::IEEE802_3::iface(const std::string& new_iface) throw (std::runtime_error) {
if (!Tins::Utils::interface_id(new_iface, this->_iface_index)) {
throw std::runtime_error("Invalid interface name!");
}
}
void Tins::IEEE802_3::length(uint16_t new_length) {
this->_eth.length = Utils::net_to_host_s(new_length);
}
uint32_t Tins::IEEE802_3::header_size() const {
return sizeof(ethhdr);
}
bool Tins::IEEE802_3::send(PacketSender* sender) {
struct sockaddr_ll addr;
memset(&addr, 0, sizeof(struct sockaddr_ll));
addr.sll_family = Utils::net_to_host_s(PF_PACKET);
addr.sll_protocol = Utils::net_to_host_s(ETH_P_ALL);
addr.sll_halen = ADDR_SIZE;
addr.sll_ifindex = _iface_index;
memcpy(&(addr.sll_addr), _eth.dst_mac, ADDR_SIZE);
return sender->send_l2(this, (struct sockaddr*)&addr, (uint32_t)sizeof(addr));
}
bool Tins::IEEE802_3::matches_response(uint8_t *ptr, uint32_t total_sz) {
if(total_sz < sizeof(ethhdr))
return false;
ethhdr *eth_ptr = (ethhdr*)ptr;
if(!memcmp(eth_ptr->dst_mac, _eth.src_mac, ADDR_SIZE)) {
return true;
}
return false;
}
void Tins::IEEE802_3::write_serialization(uint8_t *buffer, uint32_t total_sz, const PDU *parent) {
uint32_t my_sz = header_size();
bool set_length = _eth.length == 0;
assert(total_sz >= my_sz);
if (set_length)
_eth.length = Utils::net_to_host_s(size() - sizeof(_eth));
memcpy(buffer, &_eth, sizeof(ethhdr));
if (set_length)
_eth.length = 0;
}
Tins::PDU *Tins::IEEE802_3::recv_response(PacketSender *sender) {
struct sockaddr_ll addr;
memset(&addr, 0, sizeof(struct sockaddr_ll));
addr.sll_family = Utils::net_to_host_s(PF_PACKET);
addr.sll_protocol = Utils::net_to_host_s(ETH_P_802_3);
addr.sll_halen = ADDR_SIZE;
addr.sll_ifindex = _iface_index;
memcpy(&(addr.sll_addr), _eth.dst_mac, ADDR_SIZE);
return sender->recv_l2(this, (struct sockaddr*)&addr, (uint32_t)sizeof(addr));
}
Tins::PDU *Tins::IEEE802_3::clone_packet(const uint8_t *ptr, uint32_t total_sz) {
if(total_sz < sizeof(_eth))
return 0;
PDU *child = 0, *cloned;
if(total_sz > sizeof(_eth)) {
if((child = PDU::clone_inner_pdu(ptr + sizeof(_eth), total_sz - sizeof(_eth))) == 0)
return 0;
}
cloned = new IEEE802_3(ptr, std::min(total_sz, (uint32_t)sizeof(_eth)));
cloned->inner_pdu(child);
return cloned;
}
void Tins::IEEE802_3::copy_fields(const IEEE802_3 *other) {
memcpy(&_eth, &other->_eth, sizeof(_eth));
_iface_index = other->_iface_index;
}
Tins::PDU *Tins::IEEE802_3::clone_pdu() const {
IEEE802_3 *new_pdu = new IEEE802_3(_iface_index);
new_pdu->copy_fields(this);
return new_pdu;
}

85
src/llc.cpp
View File

@@ -38,10 +38,18 @@ using Tins::LLC;
const uint8_t LLC::GLOBAL_DSAP_ADDR = 0xFF;
const uint8_t LLC::NULL_ADDR = 0x00;
LLC::LLC(PDU *child) : PDU(0xff, child) {
LLC::LLC(PDU *child) : PDU(0xff, child), _type(LLC::INFORMATION) {
memset(&_header, 0, sizeof(llchdr));
control_field_length = 2;
control_field = 0;
memset(&control_field, 0, sizeof(control_field));
information_field_length = 0;
}
LLC::LLC(uint8_t dsap, uint8_t ssap, PDU *child) : PDU(0xff, child), _type(LLC::INFORMATION) {
_header.dsap = dsap;
_header.ssap = ssap;
control_field_length = 2;
memset(&control_field, 0, sizeof(control_field));
information_field_length = 0;
}
@@ -52,15 +60,16 @@ LLC::LLC(const uint8_t *buffer, uint32_t total_sz) : PDU(0xff) {
buffer += sizeof(_header);
total_sz -= sizeof(_header);
if ((buffer[0] & 0x03) == LLC::UNNUMBERED) {
control_field_length = 1;
control_field = buffer[0];
type(LLC::UNNUMBERED);
std::memcpy(&control_field.unnumbered, buffer, sizeof(un_control_field));
buffer++;
total_sz -= 1;
//TODO: Create information fields if corresponding.
}
else {
type((Format)(buffer[0] & 0x03));
control_field_length = 2;
control_field = Utils::net_to_host_s(((uint16_t*)buffer)[0]);
std::memcpy(&control_field.info, buffer, sizeof(un_control_field));
buffer += 2;
total_sz -= 2;
}
@@ -104,20 +113,19 @@ void LLC::ssap(uint8_t new_ssap) {
}
void LLC::type(LLC::Format type) {
_type = type;
switch (type) {
case LLC::INFORMATION:
control_field_length = 2;
control_field &= 0xFFFE;
control_field.info.type_bit = 0;
break;
case LLC::SUPERVISORY:
control_field_length = 2;
control_field &= 0xFFFD;
control_field |= type;
control_field.super.type_bit = 1;
break;
case LLC::UNNUMBERED:
control_field_length = 1;
control_field &= 0xFD;
control_field |= type;
control_field.unnumbered.type_bits = 3;
break;
}
}
@@ -125,48 +133,48 @@ void LLC::type(LLC::Format type) {
void LLC::send_seq_number(uint8_t seq_number) {
if (type() != LLC::INFORMATION)
return;
control_field &= 0xFF01;
control_field |= seq_number;
control_field.info.send_seq_num = seq_number;
}
void LLC::receive_seq_number(uint8_t seq_number) {
if (type() == LLC::UNNUMBERED)
return;
uint16_t to_mask = seq_number <<= 9;
control_field &= 0x01FF;
control_field |= to_mask;
switch (type()) {
case LLC::UNNUMBERED:
return;
case LLC::INFORMATION:
control_field.info.recv_seq_num = seq_number;
break;
case LLC::SUPERVISORY:
control_field.super.recv_seq_num = seq_number;
break;
}
}
void LLC::poll_final(bool value) {
uint16_t mask = 0;
switch (type()) {
case LLC::UNNUMBERED:
mask = 0xFFEF;
control_field.unnumbered.poll_final_bit = value;
break;
case LLC::INFORMATION:
control_field.info.poll_final_bit = value;
return;
case LLC::SUPERVISORY:
mask = 0xFEFF;
control_field.super.poll_final_bit = value;
break;
}
if (value)
control_field |= ~mask;
else
control_field &= mask;
}
void LLC::supervisory_function(LLC::SupervisoryFunctions new_func) {
if (type() != LLC::SUPERVISORY)
return;
control_field &= 0xFFF3;
control_field |= new_func;
control_field.super.supervisory_func = new_func;
}
void LLC::modifier_function(LLC::ModifierFunctions mod_func) {
if (type() != LLC::UNNUMBERED)
return;
control_field &= 0xEC;
control_field |= mod_func;
control_field.unnumbered.mod_func1 = mod_func >> 3;
control_field.unnumbered.mod_func2 = mod_func & 0x07;
}
void LLC::add_xid_information(uint8_t xid_id, uint8_t llc_type_class, uint8_t receive_window) {
@@ -214,14 +222,21 @@ void LLC::write_serialization(uint8_t *buffer, uint32_t total_sz, const Tins::PD
assert(total_sz >= header_size());
std::memcpy(buffer, &_header, sizeof(_header));
buffer += sizeof(_header);
if (control_field_length == 1) {
*buffer = (uint8_t)control_field;
buffer++;
}
else {
*((uint16_t*)buffer) = Utils::net_to_host_s(control_field);
buffer += 2;
switch (type()) {
case LLC::UNNUMBERED:
std::memcpy(buffer, &(control_field.unnumbered), sizeof(un_control_field));
buffer += sizeof(un_control_field);
break;
case LLC::INFORMATION:
std::memcpy(buffer, &(control_field.info), sizeof(info_control_field));
buffer += sizeof(info_control_field);
break;
case LLC::SUPERVISORY:
std::memcpy(buffer, &(control_field.super), sizeof(super_control_field));
buffer += sizeof(super_control_field);
break;
}
for (list<pair<uint8_t, uint8_t*> >::iterator it = information_fields.begin(); it != information_fields.end(); it++) {
std::memcpy(buffer, it->second, it->first);
buffer += it->first;

202
tests/src/llc.cpp Normal file
View File

@@ -0,0 +1,202 @@
#include <gtest/gtest.h>
#include <cstring>
#include <string>
#include <stdint.h>
#include "llc.h"
using namespace Tins;
using namespace std;
class LLCTest : public testing::Test {
public:
static const uint8_t expected_packet[];
static const uint8_t from_buffer_unnumbered[];
static const uint8_t from_buffer_info[];
static const uint8_t from_buffer_super[];
//void test_equals(const IP &ip1, const IP &ip2);
};
const uint8_t LLCTest::expected_packet[] = {};
const uint8_t LLCTest::from_buffer_info[] = {'\xfe', '\x48', '\x3c', '\x3b'};
const uint8_t LLCTest::from_buffer_super[] = {'\x4b', '\x19', '\x05', '\x3a'};
const uint8_t LLCTest::from_buffer_unnumbered[] = {'\xaa', '\x17', '\xcf'};
TEST_F(LLCTest, DefaultConstructor) {
LLC llc;
EXPECT_EQ(llc.ssap(), 0);
EXPECT_EQ(llc.dsap(), 0);
EXPECT_EQ(llc.type(), LLC::INFORMATION);
EXPECT_EQ(llc.header_size(), 4);
EXPECT_EQ(llc.pdu_type(), PDU::LLC);
}
TEST_F(LLCTest, ParamsConstructor) {
LLC llc(0xAD, 0x16);
EXPECT_EQ(llc.dsap(), 0xAD);
EXPECT_EQ(llc.ssap(), 0x16);
EXPECT_EQ(llc.type(), LLC::INFORMATION);
EXPECT_EQ(llc.header_size(), 4);
EXPECT_EQ(llc.pdu_type(), PDU::LLC);
}
TEST_F(LLCTest, Group) {
LLC llc;
llc.group(true);
EXPECT_TRUE(llc.group());
llc.group(false);
EXPECT_FALSE(llc.group());
}
TEST_F(LLCTest, Dsap) {
LLC llc;
llc.dsap(0xaa);
EXPECT_EQ(llc.dsap(), 0xaa);
llc.dsap(0x01);
EXPECT_EQ(llc.dsap(), 0x01);
}
TEST_F(LLCTest, Command) {
LLC llc;
llc.command(true);
EXPECT_TRUE(llc.command());
llc.command(false);
EXPECT_FALSE(llc.command());
}
TEST_F(LLCTest, Ssap) {
LLC llc;
llc.ssap(0xaa);
EXPECT_EQ(llc.ssap(), 0xaa);
llc.ssap(0x01);
EXPECT_EQ(llc.ssap(), 0x01);
}
TEST_F(LLCTest, Type) {
LLC llc;
llc.type(LLC::INFORMATION);
EXPECT_EQ(llc.type(), LLC::INFORMATION);
llc.type(LLC::SUPERVISORY);
EXPECT_EQ(llc.type(), LLC::SUPERVISORY);
llc.type(LLC::UNNUMBERED);
EXPECT_EQ(llc.type(), LLC::UNNUMBERED);
}
TEST_F(LLCTest, HeadSize) {
LLC llc;
llc.type(LLC::INFORMATION);
EXPECT_EQ(llc.header_size(), 4);
llc.type(LLC::SUPERVISORY);
EXPECT_EQ(llc.header_size(), 4);
llc.type(LLC::UNNUMBERED);
EXPECT_EQ(llc.header_size(), 3);
}
TEST_F(LLCTest, SendSeqNumber) {
LLC llc;
llc.type(LLC::INFORMATION);
llc.send_seq_number(18);
EXPECT_EQ(18, llc.send_seq_number());
llc.send_seq_number(127);
EXPECT_EQ(127, llc.send_seq_number());
llc.type(LLC::SUPERVISORY);
EXPECT_EQ(0, llc.send_seq_number());
llc.type(LLC::UNNUMBERED);
EXPECT_EQ(0, llc.send_seq_number());
}
TEST_F(LLCTest, ReceiveSeqNumber) {
LLC llc;
llc.type(LLC::INFORMATION);
llc.receive_seq_number(18);
EXPECT_EQ(18, llc.receive_seq_number());
llc.send_seq_number(127);
EXPECT_EQ(127, llc.receive_seq_number());
llc.type(LLC::SUPERVISORY);
llc.receive_seq_number(19);
EXPECT_EQ(19, llc.receive_seq_number());
llc.send_seq_number(127);
EXPECT_EQ(127, llc.receive_seq_number());
llc.type(LLC::UNNUMBERED);
EXPECT_EQ(0, llc.receive_seq_number());
}
TEST_F(LLCTest, PollFinal) {
LLC llc;
llc.type(LLC::INFORMATION);
llc.poll_final(true);
EXPECT_TRUE(llc.poll_final());
llc.poll_final(false);
EXPECT_FALSE(llc.poll_final());
llc.type(LLC::SUPERVISORY);
llc.poll_final(true);
EXPECT_TRUE(llc.poll_final());
llc.poll_final(false);
EXPECT_FALSE(llc.poll_final());
llc.type(LLC::UNNUMBERED);
llc.poll_final(true);
EXPECT_TRUE(llc.poll_final());
llc.poll_final(false);
EXPECT_FALSE(llc.poll_final());
}
TEST_F(LLCTest, SupervisoryFunction) {
LLC llc;
llc.type(LLC::INFORMATION);
EXPECT_EQ(0, llc.supervisory_function());
llc.type(LLC::SUPERVISORY);
llc.supervisory_function(LLC::RECEIVE_NOT_READY);
EXPECT_EQ(LLC::RECEIVE_NOT_READY, llc.supervisory_function());
llc.supervisory_function(LLC::RECEIVE_READY);
EXPECT_EQ(LLC::RECEIVE_READY, llc.supervisory_function());
llc.type(LLC::UNNUMBERED);
EXPECT_EQ(0, llc.supervisory_function());
}
TEST_F(LLCTest, ModifierFunction) {
LLC llc;
llc.type(LLC::INFORMATION);
EXPECT_EQ(0, llc.modifier_function());
llc.type(LLC::SUPERVISORY);
EXPECT_EQ(0, llc.modifier_function());
llc.type(LLC::UNNUMBERED);
llc.modifier_function(LLC::TEST);
EXPECT_EQ(LLC::TEST, llc.modifier_function());
llc.modifier_function(LLC::XID);
EXPECT_EQ(LLC::XID, llc.modifier_function());
}
TEST_F(LLCTest, ConstructorFromBuffer) {
LLC llc(LLCTest::from_buffer_info, 4);
EXPECT_EQ(llc.type(), LLC::INFORMATION);
EXPECT_EQ(llc.header_size(), 4);
EXPECT_EQ(llc.dsap(), 0xFE);
EXPECT_EQ(llc.ssap(), 0x48);
EXPECT_FALSE(llc.group());
EXPECT_TRUE(llc.command());
EXPECT_TRUE(llc.poll_final());
EXPECT_EQ(llc.send_seq_number(), 30);
EXPECT_EQ(llc.receive_seq_number(), 29);
LLC llc_super(LLCTest::from_buffer_super, 4);
EXPECT_EQ(llc_super.header_size(), 4);
EXPECT_EQ(llc_super.dsap(), 0x4B);
EXPECT_EQ(llc_super.ssap(), 0x19);
EXPECT_TRUE(llc_super.group());
EXPECT_FALSE(llc_super.command());
EXPECT_FALSE(llc_super.poll_final());
EXPECT_EQ(llc_super.receive_seq_number(), 29);
EXPECT_EQ(llc_super.supervisory_function(), LLC::RECEIVE_NOT_READY);
LLC llc_unnum(LLCTest::from_buffer_unnumbered, 3);
EXPECT_EQ(llc_unnum.header_size(), 3);
EXPECT_EQ(llc_unnum.dsap(), 0xaa);
EXPECT_EQ(llc_unnum.ssap(), 0x17);
EXPECT_FALSE(llc_unnum.group());
EXPECT_FALSE(llc_unnum.command());
EXPECT_FALSE(llc_unnum.poll_final());
EXPECT_EQ(llc_unnum.modifier_function(), LLC::SABME);
}