mirror of
https://github.com/mfontanini/libtins
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132 lines
3.5 KiB
C++
132 lines
3.5 KiB
C++
/*
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* Copyright (c) 2017, Matias Fontanini
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <cstring>
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#include "bootp.h"
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#include "exceptions.h"
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#include "memory_helpers.h"
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using std::copy;
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using Tins::Memory::InputMemoryStream;
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using Tins::Memory::OutputMemoryStream;
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namespace Tins{
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BootP::BootP()
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: bootp_(), vend_(64) {
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}
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BootP::BootP(const uint8_t* buffer, uint32_t total_sz, uint32_t vend_field_size)
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: vend_(vend_field_size) {
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InputMemoryStream stream(buffer, total_sz);
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stream.read(bootp_);
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if (!stream.can_read(vend_field_size)) {
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throw malformed_packet();
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}
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stream.read(vend_, vend_field_size);
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}
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uint32_t BootP::header_size() const {
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return static_cast<uint32_t>(sizeof(bootp_) + vend_.size());
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}
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void BootP::opcode(uint8_t code) {
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bootp_.opcode = code;
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}
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void BootP::htype(uint8_t type) {
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bootp_.htype = type;
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}
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void BootP::hlen(uint8_t length) {
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bootp_.hlen = length;
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}
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void BootP::hops(uint8_t count) {
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bootp_.hops = count;
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}
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void BootP::xid(uint32_t identifier) {
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bootp_.xid = Endian::host_to_be(identifier);
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}
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void BootP::secs(uint16_t value) {
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bootp_.secs = Endian::host_to_be(value);
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}
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void BootP::padding(uint16_t value) {
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bootp_.padding = Endian::host_to_be(value);
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}
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void BootP::ciaddr(ipaddress_type address) {
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bootp_.ciaddr = address;
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}
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void BootP::yiaddr(ipaddress_type address) {
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bootp_.yiaddr = address;
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}
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void BootP::siaddr(ipaddress_type address) {
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bootp_.siaddr = address;
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}
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void BootP::giaddr(ipaddress_type address) {
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bootp_.giaddr = address;
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}
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void BootP::sname(const uint8_t* new_sname) {
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copy(new_sname, new_sname + sizeof(bootp_.sname), bootp_.sname);
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}
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void BootP::file(const uint8_t* new_file) {
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copy(new_file, new_file + sizeof(bootp_.file), bootp_.file);
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}
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void BootP::vend(const vend_type& newvend_) {
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vend_ = newvend_;
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}
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void BootP::write_serialization(uint8_t* buffer, uint32_t total_sz) {
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OutputMemoryStream stream(buffer, total_sz);
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stream.write(bootp_);
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stream.write(vend_.begin(), vend_.end());
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}
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bool BootP::matches_response(const uint8_t* ptr, uint32_t total_sz) const {
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if (total_sz < sizeof(bootp_)) {
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return false;
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}
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const bootp_header* bootp_ptr = (const bootp_header *)ptr;
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return bootp_ptr->xid == bootp_.xid;
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}
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} // Tins
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