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245 | // Copyright (C) 2018-2024 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Kea Hooks Basic
// Commercial End User License Agreement v2.0. See COPYING file in the premium/
// directory.
#include <config.h>
#include <host_cache_parsers.h><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
#include <cc/dhcp_config_error.h>
#include <dhcpsrv/parsers/option_data_parser.h>
#include <boost/pointer_cast.hpp><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
#include <boost/lexical_cast.hpp><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
using namespace isc::asiolink;
using namespace isc::data;
using namespace isc::dhcp;
using namespace std;
namespace isc {
namespace host_cache {
/// @brief Defaults for Host Cache configuration.
const SimpleDefaults HCConfigParser::HOST_CACHE_DEFAULTS = {
{ "maximum", Element::integer, "0" }
};
/// @todo: Remove this duplicated code (see trac #5578)
void
HCConfigParser::parse(HostCache& hcref, const ConstElementPtr& config) {
ElementPtr mutable_cfg;
if (config) {
mutable_cfg = boost::const_pointer_cast<Element>(config);
} else {
mutable_cfg = Element::createMap();
}
if (!mutable_cfg || (mutable_cfg->getType() != Element::map)) {
isc_throw(ConfigError, "Host Cache config is not a map");
}
try {
setDefaults(mutable_cfg, HOST_CACHE_DEFAULTS);
int64_t maximum = getInteger(mutable_cfg, "maximum");
if (maximum < 0) {
isc_throw(ConfigError, "Host Cache maximum parameter is negative");
}
if (maximum > MAXIMUM) {
isc_throw(ConfigError, "Host Cache maximum parameter is too large "
<< "(" << maximum << " > " << MAXIMUM << ")");
}
hcref.setMaximum(static_cast<size_t>(maximum));
} catch (const ConfigError&) {
throw;
} catch (const exception& ex) {
isc_throw(ConfigError, ex.what());
}
}
HostPtr
HCEntryParser::parse(const ConstElementPtr& entry) {
try {
// Scan critical parameters
string identifier;
string identifier_name;
string hostname;
ConstElementPtr user_context;
auto& map = entry->mapValue();<--- Variable 'map' can be declared as reference to const
for (auto const& element : map) {
if ((element.first == "hw-address") ||
(element.first == "duid") ||
(element.first == "circuit-id") ||
(element.first == "client-id") ||
(element.first == "flex-id")) {
if (!identifier_name.empty()) {
isc_throw(ConfigError, "the '" << element.first
<< "' and '" << identifier_name
<< "' are mutually exclusive");
}
identifier = element.second->stringValue();
identifier_name = element.first;
continue;
}
if (element.first == "hostname") {
hostname = element.second->stringValue();
continue;
}
if (element.first == "user-context") {
user_context = element.second;
continue;
}
}
// Host identifier is a must.
if (identifier_name.empty()) {
isc_throw(ConfigError, "no identifier");
}
// Create a host object from the basic parameters we already parsed.
HostPtr host;
host.reset(new Host(identifier, identifier_name,
SubnetID(SUBNET_ID_UNUSED),
SubnetID(SUBNET_ID_UNUSED),
IOAddress("0.0.0.0"), hostname));
// Add user context
if (user_context) {
host->setContext(user_context);
}
// Scan other parameters
for (auto const& element : map) {
if ((element.first == "hw-address") ||
(element.first == "duid") ||
(element.first == "circuit-id") ||
(element.first == "client-id") ||
(element.first == "flex-id") ||
(element.first == "hostname") ||
(element.first == "user-context")) {
continue;
}
if (element.first == "subnet-id4") {
host->setIPv4SubnetID(element.second->intValue());
continue;
}
if (element.first == "subnet-id6") {
host->setIPv6SubnetID(element.second->intValue());
continue;
}
if (element.first == "option-data4") {
CfgOptionPtr cfg_option = host->getCfgOption4();
OptionDataListParser parser(AF_INET);
parser.parse(cfg_option, element.second);
continue;
}
if (element.first == "option-data6") {
CfgOptionPtr cfg_option = host->getCfgOption6();
OptionDataListParser parser(AF_INET6);
parser.parse(cfg_option, element.second);
continue;
}
if (element.first == "ip-address") {
host->setIPv4Reservation(IOAddress(element.second->stringValue()));
continue;
}
if (element.first == "next-server") {
host->setNextServer(IOAddress(element.second->stringValue()));
continue;
}
if (element.first == "server-hostname") {
host->setServerHostname(element.second->stringValue());
continue;
}
if (element.first == "boot-file-name") {
host->setBootFileName(element.second->stringValue());
continue;
}
if (element.first == "client-classes4") {
auto const& classes = element.second->listValue();
for (auto const& cclass : classes) {
host->addClientClass4(cclass->stringValue());
}
continue;
}
if (element.first == "client-classes6") {
auto const& classes = element.second->listValue();
for (auto const& cclass : classes) {
host->addClientClass6(cclass->stringValue());
}
continue;
}
if (element.first == "ip-addresses") {
auto const& addresses = element.second->listValue();
for (auto const& addr : addresses) {
string address = addr->stringValue();
host->addReservation(IPv6Resrv(IPv6Resrv::TYPE_NA,
IOAddress(address),
128));
}
continue;
}
if (element.first == "prefixes") {
auto& prefixes = element.second->listValue();<--- Variable 'prefixes' can be declared as reference to const
for (auto const& pref : prefixes) {
string prefix = pref->stringValue();
uint8_t len = 128;
size_t pos = prefix.find('/');
if (pos == string::npos) {
isc_throw(ConfigError, "bad prefix (no /)");
} else if (pos > prefix.length() - 1) {
isc_throw(ConfigError, "bad prefix (end /)");
}
try {
string preflen = prefix.substr(pos + 1);
len = boost::lexical_cast<unsigned>(preflen);
} catch (const boost::bad_lexical_cast&) {
isc_throw(ConfigError, "bad prefix length");
}
prefix.erase(pos);
host->addReservation(IPv6Resrv(IPv6Resrv::TYPE_PD,
IOAddress(prefix),
len));
}
continue;
}
if (element.first == "host-id") {
int64_t hid = element.second->intValue();
host->setHostId(static_cast<uint64_t>(hid));
continue;
}
if (element.first == "negative") {
host->setNegative(element.second->boolValue());
continue;
}
isc_throw(ConfigError, "unknown parameter: " << element.first);
}
return (host);
} catch (const ConfigError&) {
throw;
} catch (const exception& ex) {
isc_throw(ConfigError, ex.what());
}
}
} // end of namespace isc::host_cache
} // end of namespace isc
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