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// Copyright (C) 2018-2021 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/adaptor.h>
#include <yang/yang_models.h>
#include <sstream>
using namespace std;
using namespace isc::data;
using namespace sysrepo;
namespace isc {
namespace yang {
TranslatorHost::TranslatorHost(S_Session session, const string& model)
: TranslatorBasic(session, model),
TranslatorOptionData(session, model),
TranslatorOptionDataList(session, model) {
}
TranslatorHost::~TranslatorHost() {
}
ElementPtr
TranslatorHost::getHost(const string& xpath) {
try {
if ((model_ == KEA_DHCP4_SERVER) ||
(model_ == KEA_DHCP6_SERVER)) {
return (getHostKea(xpath));
}
} catch (const sysrepo_exception& ex) {
isc_throw(SysrepoError,
"sysrepo error getting host reservation at '" << xpath
<< "': " << ex.what());
}
isc_throw(NotImplemented,
"getHost not implemented for the model: " << model_);
}
ElementPtr
TranslatorHost::getHostKea(const string& xpath) {
ConstElementPtr id_type = getItem(xpath + "/identifier-type");
ConstElementPtr id = getItem(xpath + "/identifier");
if (!id_type || !id) {
isc_throw(Unexpected, "getHostKea requires both identifier and "
"identifier-type");
}
ElementPtr result = Element::createMap();
result->set(id_type->stringValue(), id);
ConstElementPtr hostname = getItem(xpath + "/hostname");
if (hostname) {
result->set("hostname", hostname);
}
if (model_ == KEA_DHCP4_SERVER) {
ConstElementPtr address = getItem(xpath + "/ip-address");
if (address) {
result->set("ip-address", address);
}
} else {
ConstElementPtr addresses = getItems(xpath + "/ip-addresses");
if (addresses && (addresses->size() > 0)) {
result->set("ip-addresses", addresses);
}
ConstElementPtr prefixes = getItems(xpath + "/prefixes");
if (prefixes && (prefixes->size() > 0)) {
result->set("prefixes", prefixes);
}
}
ConstElementPtr options = getOptionDataList(xpath);
if (options && (options->size() > 0)) {
result->set("option-data", options);
}
ConstElementPtr classes = getItems(xpath + "/client-classes");
if (classes) {
result->set("client-classes", classes);
}
if (model_ == KEA_DHCP4_SERVER) {
ConstElementPtr next = getItem(xpath + "/next-server");
if (next) {
result->set("next-server", next);
}
ConstElementPtr hostname = getItem(xpath + "/server-hostname");
if (hostname) {
result->set("server-hostname", hostname);
}
ConstElementPtr boot = getItem(xpath + "/boot-file-name");
if (boot) {
result->set("boot-file-name", boot);
}
}
ConstElementPtr context = getItem(xpath + "/user-context");
if (context) {
result->set("user-context", Element::fromJSON(context->stringValue()));
}
return (result);
}
void
TranslatorHost::setHost(const string& 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 (const sysrepo_exception& ex) {
isc_throw(SysrepoError,
"sysrepo error setting host reservation '" << elem->str()
<< "' at '" << xpath << "': " << ex.what());
}
}
void
TranslatorHost::setHostKea(const string& xpath, ConstElementPtr elem) {
ConstElementPtr hostname = elem->get("hostname");
// Skip identifier and identifier type as they are keys.
if (hostname) {
setItem(xpath + "/hostname", hostname, SR_STRING_T);
}
if (model_ == KEA_DHCP4_SERVER) {
ConstElementPtr address = elem->get("ip-address");
if (address) {
setItem(xpath + "/ip-address", address, SR_STRING_T);
}
} else {
ConstElementPtr addresses = elem->get("ip-addresses");
if (addresses && (addresses->size() > 0)) {
for (ConstElementPtr address : addresses->listValue()) {
setItem(xpath + "/ip-addresses", address, SR_STRING_T);
}
}
ConstElementPtr prefixes = elem->get("prefixes");
if (prefixes && (prefixes->size() > 0)) {
for (ConstElementPtr prefix : prefixes->listValue()) {
setItem(xpath + "/prefixes", prefix, SR_STRING_T);
}
}
}
ConstElementPtr options = elem->get("option-data");
if (options && (options->size() > 0)) {
setOptionDataList(xpath, options);
}
ConstElementPtr classes = elem->get("client-classes");
if (classes && (classes->size() > 0)) {
for (ConstElementPtr cclass : classes->listValue()) {
setItem(xpath + "/client-classes", cclass, SR_STRING_T);
}
}
// These are DHCPv4-specific parameters.
if (model_ == KEA_DHCP4_SERVER) {
ConstElementPtr next = elem->get("next-server");
if (next) {
setItem(xpath + "/next-server", next, SR_STRING_T);
}
ConstElementPtr hostname = elem->get("server-hostname");
if (hostname) {
setItem(xpath + "/server-hostname", hostname, SR_STRING_T);
}
ConstElementPtr boot = elem->get("boot-file-name");
if (boot) {
setItem(xpath + "/boot-file-name", boot, SR_STRING_T);
}
}
// User context is supported in both kea-dhcp4-server and kea-dhcp6-server.
ConstElementPtr context = Adaptor::getContext(elem);
if (context) {
setItem(xpath + "/user-context", Element::create(context->str()),
SR_STRING_T);
}
}
TranslatorHosts::TranslatorHosts(S_Session session, const string& model)
: TranslatorBasic(session, model),
TranslatorOptionData(session, model),
TranslatorOptionDataList(session, model),
TranslatorHost(session, model) {
}
TranslatorHosts::~TranslatorHosts() {
}
ElementPtr
TranslatorHosts::getHosts(const string& xpath) {
return getList<TranslatorHost>(xpath + "/host", *this,
&TranslatorHost::getHost);
}
void
TranslatorHosts::setHosts(const string& 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 (const sysrepo_exception& ex) {
isc_throw(SysrepoError,
"sysrepo error setting host reservations '" << elem->str()
<< "' at '" << xpath << "': " << ex.what());
}
}
void
TranslatorHosts::setHostsKea(const string& xpath, ConstElementPtr elem) {
for (size_t i = 0; i < elem->size(); ++i) {
string id_type = "unknown";
ConstElementPtr host = elem->get(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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