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// Copyright (C) 2015-2022 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#include <config.h>
#include <dhcp/dhcp4.h>
#include <dhcp/dhcp6.h>
#include <dhcp/option6_status_code.h>
#include <dhcp/option_data_types.h>
#include <util/io_utilities.h>
#include <iterator>
#include <sstream>
using namespace isc;
using namespace isc::dhcp;
namespace {
/// @brief Minimum length of the option (when status message is empty).
const size_t OPTION6_STATUS_CODE_MIN_LEN = sizeof(uint16_t);
const size_t OPTION4_SLP_SERVICE_SCOPEMIN_LEN = sizeof(uint8_t);
}; // end of anonymous namespace
namespace isc {
namespace dhcp {
Option6StatusCode::Option6StatusCode(const uint16_t status_code,
const std::string& status_message)
: Option(Option::V6, D6O_STATUS_CODE),
status_code_(status_code), status_message_(status_message) {
}
Option6StatusCode::Option6StatusCode(OptionBufferConstIter begin,
OptionBufferConstIter end)
: Option(Option::V6, D6O_STATUS_CODE),
status_code_(STATUS_Success), status_message_() {
// Parse data
unpack(begin, end);
}
OptionPtr
Option6StatusCode::clone() const {
return (cloneInternal<Option6StatusCode>());
}
void
Option6StatusCode::pack(isc::util::OutputBuffer& buf, bool) const {
// Pack option header.
packHeader(buf);
// Write numeric status code.
buf.writeUint16(getStatusCode());
// If there is any status message, write it.
if (!status_message_.empty()) {
buf.writeData(&status_message_[0], status_message_.size());
}
// Status code has no options, so leave here.
}
void
Option6StatusCode::unpack(OptionBufferConstIter begin, OptionBufferConstIter end) {
// Make sure that the option is not truncated.
if (std::distance(begin, end) < OPTION6_STATUS_CODE_MIN_LEN) {
isc_throw(OutOfRange, "Status Code option ("
<< D6O_STATUS_CODE << ") truncated");
}
status_code_ = util::readUint16(&(*begin), std::distance(begin, end));
begin += sizeof(uint16_t);
status_message_.assign(begin, end);
}
uint16_t
Option6StatusCode::len() const {
return (getHeaderLen() + sizeof(uint16_t) + status_message_.size());
}
std::string
Option6StatusCode::toText(int indent) const {
std::ostringstream output;
output << headerToText(indent) << ": " << dataToText();
return (output.str());
}
std::string
Option6StatusCode::dataToText() const {
std::ostringstream output;
// Add status code name and numeric status code.
output << getStatusCodeName() << "(" << getStatusCode() << ") ";
// Include status message in quotes if status code is
// non-empty.
if (!status_message_.empty()) {
output << "\"" << status_message_ << "\"";
} else {
output << "(no status message)";
}
return (output.str());
}
std::string
Option6StatusCode::getStatusCodeName() const {
switch (getStatusCode()) {
case STATUS_Success:
return ("Success");
case STATUS_UnspecFail:
return ("UnspecFail");
case STATUS_NoAddrsAvail:
return ("NoAddrsAvail");
case STATUS_NoBinding:
return ("NoBinding");
case STATUS_NotOnLink:
return ("NotOnLink");
case STATUS_UseMulticast:
return ("UseMulticast");
case STATUS_NoPrefixAvail:
return ("NoPrefixAvail");
case STATUS_UnknownQueryType:
return ("UnknownQueryType");
case STATUS_MalformedQuery:
return ("MalformedQuery");
case STATUS_NotConfigured:
return ("NotConfigured");
case STATUS_NotAllowed:
return ("NotAllowed");
default:
;
}
return ("(unknown status code)");
}
Option4SlpServiceScope::Option4SlpServiceScope(const bool mandatory_flag,
const std::string& scope_list)
: Option(Option::V4, DHO_SERVICE_SCOPE),
mandatory_flag_(mandatory_flag), scope_list_(scope_list) {
}
Option4SlpServiceScope::Option4SlpServiceScope(OptionBufferConstIter begin,
OptionBufferConstIter end)
: Option(Option::V4, DHO_SERVICE_SCOPE),
mandatory_flag_(false), scope_list_() {
// Parse data
unpack(begin, end);
}
OptionPtr
Option4SlpServiceScope::clone() const {
return (cloneInternal<Option4SlpServiceScope>());
}
void
Option4SlpServiceScope::pack(isc::util::OutputBuffer& buf, bool check) const {
// Pack option header.
packHeader(buf, check);
// Write mandatory flag.
buf.writeUint8(static_cast<uint8_t>(getMandatoryFlag() ? 1 : 0));
// If there is any scope list, write it.
if (!scope_list_.empty()) {
buf.writeData(&scope_list_[0], scope_list_.size());
}
// SLP service scope has no options, so leave here.
}
void
Option4SlpServiceScope::unpack(OptionBufferConstIter begin, OptionBufferConstIter end) {
// Make sure that the option is not truncated.
if (std::distance(begin, end) < OPTION4_SLP_SERVICE_SCOPEMIN_LEN) {
isc_throw(OutOfRange, "SLP Service Scope option ("
<< DHO_SERVICE_SCOPE << ") truncated");
}
if (*begin == 1) {
mandatory_flag_ = true;
} else if (*begin == 0) {
mandatory_flag_ = false;
} else {
isc_throw(BadDataTypeCast, "unable to read the buffer as boolean"
<< " value. Invalid value " << static_cast<int>(*begin));
}
begin += sizeof(uint8_t);
scope_list_.assign(begin, end);
}
uint16_t
Option4SlpServiceScope::len() const {
return (getHeaderLen() + sizeof(uint8_t) + scope_list_.size());
}
std::string
Option4SlpServiceScope::toText(int indent) const {
std::ostringstream output;
output << headerToText(indent) << ": " << dataToText();
return (output.str());
}
std::string
Option4SlpServiceScope::dataToText() const {
std::ostringstream output;
output << "mandatory:" << getMandatoryFlag();
output << ", scope-list:\"" << scope_list_ << "\"";
return (output.str());
}
} // end of namespace isc::dhcp
} // end of namespace isc
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