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// Copyright (C) 2012-2014 Internet Systems Consortium, Inc. ("ISC")
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
// PERFORMANCE OF THIS SOFTWARE.
#include <dhcp/hwaddr.h>
#include <dhcp/dhcp4.h>
#include <exceptions/exceptions.h>
#include <util/encode/hex.h>
#include <boost/algorithm/string/classification.hpp>
#include <boost/algorithm/string/constants.hpp>
#include <boost/algorithm/string/split.hpp>
#include <iomanip>
#include <sstream>
#include <vector>
#include <string.h>
namespace isc {
namespace dhcp {
const uint32_t HWAddr::HWADDR_SOURCE_ANY = 0xffffffff;
const uint32_t HWAddr::HWADDR_SOURCE_UNKNOWN = 0x00000000;
const uint32_t HWAddr::HWADDR_SOURCE_RAW = 0x00000001;
const uint32_t HWAddr::HWADDR_SOURCE_DUID = 0x00000002;
const uint32_t HWAddr::HWADDR_SOURCE_IPV6_LINK_LOCAL = 0x00000004;
const uint32_t HWAddr::HWADDR_SOURCE_CLIENT_ADDR_RELAY_OPTION = 0x00000008;
const uint32_t HWAddr::HWADDR_SOURCE_REMOTE_ID = 0x00000010;
const uint32_t HWAddr::HWADDR_SOURCE_SUBSCRIBER_ID = 0x00000020;
const uint32_t HWAddr::HWADDR_SOURCE_DOCSIS = 0x00000040;
HWAddr::HWAddr()
:htype_(HTYPE_ETHER), source_(0) {
}
HWAddr::HWAddr(const uint8_t* hwaddr, size_t len, uint16_t htype)
:hwaddr_(hwaddr, hwaddr + len), htype_(htype), source_(0) {
if (len > MAX_HWADDR_LEN) {
isc_throw(isc::BadValue, "hwaddr length exceeds MAX_HWADDR_LEN");
}
}
HWAddr::HWAddr(const std::vector<uint8_t>& hwaddr, uint16_t htype)
:hwaddr_(hwaddr), htype_(htype), source_(0) {
if (hwaddr.size() > MAX_HWADDR_LEN) {
isc_throw(isc::BadValue,
"address vector size exceeds MAX_HWADDR_LEN");
}
}
std::string HWAddr::toText(bool include_htype) const {
std::stringstream tmp;
if (include_htype) {
tmp << "hwtype=" << static_cast<unsigned int>(htype_) << " ";
}
tmp << std::hex;
bool delim = false;
for (std::vector<uint8_t>::const_iterator it = hwaddr_.begin();
it != hwaddr_.end(); ++it) {
if (delim) {
tmp << ":";
}
tmp << std::setw(2) << std::setfill('0') << static_cast<unsigned int>(*it);
delim = true;
}
return (tmp.str());
}
HWAddr
HWAddr::fromText(const std::string& text, const uint16_t htype) {
/// @todo optimize stream operations here.
std::vector<std::string> split_text;
boost::split(split_text, text, boost::is_any_of(":"),
boost::algorithm::token_compress_off);
std::ostringstream s;
for (size_t i = 0; i < split_text.size(); ++i) {
// If there are multiple tokens and the current one is empty, it
// means that two consecutive colons were specified. This is not
// allowed for hardware address.
if ((split_text.size() > 1) && split_text[i].empty()) {
isc_throw(isc::BadValue, "failed to create hardware address"
" from text '" << text << "': tokens of the hardware"
" address must be separated with a single colon");
} else if (split_text[i].size() == 1) {
s << "0";
} else if (split_text[i].size() > 2) {
isc_throw(isc::BadValue, "invalid hwaddr '" << text << "'");
}
s << split_text[i];
}
std::vector<uint8_t> binary;
try {
util::encode::decodeHex(s.str(), binary);
} catch (const Exception& ex) {
isc_throw(isc::BadValue, "failed to create hwaddr from text '"
<< text << "': " << ex.what());
}
return (HWAddr(binary, htype));
}
bool HWAddr::operator==(const HWAddr& other) const {
return ((this->htype_ == other.htype_) &&
(this->hwaddr_ == other.hwaddr_));
}
bool HWAddr::operator!=(const HWAddr& other) const {
return !(*this == other);
}
}; // end of isc::dhcp namespace
}; // end of isc namespace
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