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// Copyright (C) 2018-2024 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 <yang/translator_host.h>
#include <yang/yang_models.h>
#include <sstream>
using namespace std;
using namespace isc::data;
using namespace libyang;
using namespace sysrepo;
namespace isc {
namespace yang {
TranslatorHost::TranslatorHost(Session session, const string& model)
: Translator(session, model),
TranslatorOptionData(session, model),
TranslatorOptionDataList(session, model) {
}
ElementPtr
TranslatorHost::getHost(DataNode const& data_node) {
try {
if ((model_ == KEA_DHCP4_SERVER) ||
(model_ == KEA_DHCP6_SERVER)) {
return (getHostKea(data_node));
}
} catch (Error const& ex) {
isc_throw(NetconfError,
"getting host reservation:"
<< ex.what());
}
isc_throw(NotImplemented,
"getHost not implemented for the model: " << model_);
}
ElementPtr
TranslatorHost::getHostFromAbsoluteXpath(string const& xpath) {
try {
return getHost(findXPath(xpath));
} catch (NetconfError const&) {
return ElementPtr();
}
}
ElementPtr
TranslatorHost::getHostKea(DataNode const& data_node) {
ConstElementPtr id_type = getItem(data_node, "identifier-type");
ConstElementPtr id = getItem(data_node, "identifier");
if (!id_type || !id) {
isc_throw(MissingNode, "getHostKea requires both identifier and identifier-type");
}
ElementPtr result = Element::createMap();
result->set(id_type->stringValue(), id);
checkAndGetLeaf(result, data_node, "client-classes");
checkAndGetLeaf(result, data_node, "hostname");
checkAndGetAndJsonifyLeaf(result, data_node, "user-context");
ConstElementPtr options = getOptionDataList(data_node);
if (options) {
result->set("option-data", options);
}
if (model_ == KEA_DHCP4_SERVER) {
checkAndGetLeaf(result, data_node, "boot-file-name");
checkAndGetLeaf(result, data_node, "ip-address");
checkAndGetLeaf(result, data_node, "next-server");
checkAndGetLeaf(result, data_node, "server-hostname");
} else {
checkAndGetLeaf(result, data_node, "ip-addresses");
checkAndGetLeaf(result, data_node, "prefixes");
}
return (result->empty() ? ElementPtr() : result);
}
void
TranslatorHost::setHost(string const& xpath, ConstElementPtr elem) {
try {
if ((model_ == KEA_DHCP4_SERVER) ||
(model_ == KEA_DHCP6_SERVER)) {
setHostKea(xpath, elem);
} else {
isc_throw(NotImplemented,
"setHost not implemented for the model: " << model_);
}
} catch (Error const& ex) {
isc_throw(NetconfError,
"setting host reservation '" << elem->str()
<< "' : " << ex.what());
}
}
void
TranslatorHost::setHostKea(string const& xpath, ConstElementPtr elem) {
// Set the list element. This is important in case we have no other elements except the keys.
setItem(xpath, ElementPtr(), LeafBaseType::Unknown);
// Skip keys "identifier" and "identifier-type" since they were set with the
// list element in the call above with the LeafBaseType::Unknown parameter.
checkAndSetLeaf(elem, xpath, "hostname", LeafBaseType::String);
checkAndSetLeafList(elem, xpath, "client-classes", LeafBaseType::String);
ConstElementPtr options = elem->get("option-data");
if (options && !options->empty()) {
setOptionDataList(xpath, options);
}
if (model_ == KEA_DHCP4_SERVER) {
checkAndSetLeaf(elem, xpath, "boot-file-name", LeafBaseType::String);
checkAndSetLeaf(elem, xpath, "ip-address", LeafBaseType::String);
checkAndSetLeaf(elem, xpath, "next-server", LeafBaseType::String);
checkAndSetLeaf(elem, xpath, "server-hostname", LeafBaseType::String);
} else {
checkAndSetLeafList(elem, xpath, "ip-addresses", LeafBaseType::String);
checkAndSetLeafList(elem, xpath, "prefixes", LeafBaseType::String);
}
// User context is supported in both kea-dhcp4-server and kea-dhcp6-server.
checkAndSetUserContext(elem, xpath);
}
TranslatorHosts::TranslatorHosts(Session session, const string& model)
: Translator(session, model),
TranslatorOptionData(session, model),
TranslatorOptionDataList(session, model),
TranslatorHost(session, model) {
}
ElementPtr
TranslatorHosts::getHosts(DataNode const& data_node) {
return getList<TranslatorHost>(data_node, "host", *this,
&TranslatorHost::getHost);
}
ElementPtr
TranslatorHosts::getHostsFromAbsoluteXpath(string const& xpath) {
try {
return getHosts(findXPath(xpath));
} catch (NetconfError const&) {
return ElementPtr();
}
}
void
TranslatorHosts::setHosts(string const& xpath, ConstElementPtr elem) {
try {
if ((model_ == KEA_DHCP4_SERVER) ||
(model_ == KEA_DHCP6_SERVER)) {
setHostsKea(xpath, elem);
} else {
isc_throw(NotImplemented,
"setHosts not implemented for the model: " << model_);
}
} catch (Error const& ex) {
isc_throw(NetconfError,
"setting host reservations '" << elem->str()
<< "' : " << ex.what());
}
}
void
TranslatorHosts::setHostsKea(string const& xpath, ConstElementPtr elem) {
for (size_t i = 0; i < elem->size(); ++i) {
string id_type = "unknown";
ElementPtr host = elem->getNonConst(i);
ConstElementPtr id = host->get("hw-address");
if (id) {
id_type = "hw-address";
goto found;
}
id = host->get("duid");
if (id) {
id_type = "duid";
goto found;
}
if (model_ == KEA_DHCP4_SERVER) {
id = host->get("circuit-id");
if (id) {
id_type = "circuit-id";
goto found;
}
id = host->get("client-id");
if (id) {
id_type = "client-id";
goto found;
}
}
id = host->get("flex-id");
if (id) {
id_type = "flex-id";
goto found;
}
found:
if (id_type == "unknown") {
isc_throw(BadValue, "getHosts: can't find the identifier type in "
<< host->str());
}
ostringstream key;
key << xpath << "/host[identifier-type='" << id_type
<< "'][identifier='" << id->stringValue() << "']";
setHost(key.str(), host);
}
}
} // namespace yang
} // namespace isc
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