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// Copyright (C) 2012 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/duid.h>
#include <exceptions/exceptions.h>
#include <util/io_utilities.h>
#include <iomanip>
#include <sstream>
#include <vector>
#include <stdint.h>
namespace isc {
namespace dhcp {
DUID::DUID(const std::vector<uint8_t>& duid) {
if (duid.size() > MAX_DUID_LEN) {
isc_throw(OutOfRange, "DUID too large");
}
if (duid.empty()) {
isc_throw(OutOfRange, "Empty DUIDs are not allowed");
}
duid_ = duid;
}
DUID::DUID(const uint8_t* data, size_t len) {
if (len > MAX_DUID_LEN) {
isc_throw(OutOfRange, "DUID too large");
}
if (len == 0) {
isc_throw(OutOfRange, "Empty DUIDs/Client-ids not allowed");
}
duid_ = std::vector<uint8_t>(data, data + len);
}
std::vector<uint8_t> DUID::getDuid() const {
return (duid_);
}
DUID::DUIDType DUID::getType() const {
if (duid_.size() < 2) {
return (DUID_UNKNOWN);
}
uint16_t type = (duid_[0] << 8) + duid_[1];
if (type < DUID_MAX) {
return (static_cast<DUID::DUIDType>(type));
} else {
return (DUID_UNKNOWN);
}
}
std::string DUID::toText() const {
std::stringstream tmp;
tmp << std::hex;
bool delim = false;
for (std::vector<uint8_t>::const_iterator it = duid_.begin();
it != duid_.end(); ++it) {
if (delim) {
tmp << ":";
}
tmp << std::setw(2) << std::setfill('0') << static_cast<unsigned int>(*it);
delim = true;
}
return (tmp.str());
}
bool DUID::operator==(const DUID& other) const {
return (this->duid_ == other.duid_);
}
bool DUID::operator!=(const DUID& other) const {
return (this->duid_ != other.duid_);
}
// Constructor based on vector<uint8_t>
ClientId::ClientId(const std::vector<uint8_t>& clientid)
: DUID(clientid) {
if (clientid.size() < MIN_CLIENT_ID_LEN) {
isc_throw(OutOfRange, "client-id is too short (" << clientid.size()
<< "), at least 2 is required");
}
}
// Constructor based on C-style data
ClientId::ClientId(const uint8_t *clientid, size_t len)
: DUID(clientid, len) {
if (len < MIN_CLIENT_ID_LEN) {
isc_throw(OutOfRange, "client-id is too short (" << len
<< "), at least 2 is required");
}
}
// Returns a copy of client-id data
std::vector<uint8_t> ClientId::getClientId() const {
return (duid_);
}
// Returns the Client ID in text form
std::string ClientId::toText() const {
// As DUID is a private base class of ClientId, we can't access
// its public toText() method through inheritance: instead we
// need the interface of a ClientId::toText() that calls the
// equivalent method in the base class.
return (DUID::toText());
}
// Compares two client-ids
bool ClientId::operator==(const ClientId& other) const {
return (this->duid_ == other.duid_);
}
// Compares two client-ids
bool ClientId::operator!=(const ClientId& other) const {
return (this->duid_ != other.duid_);
}
}; // end of isc::dhcp namespace
}; // end of isc namespace
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