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// Copyright (C) 2018-2019,2021 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.h>
#include <util/encode/base64.h>
#include <cstring>
using namespace std;
using namespace isc::data;
using namespace isc::util::encode;
using namespace sysrepo;
namespace {
string encode64(const string& input) {
vector<uint8_t> binary;
binary.resize(input.size());
memmove(&binary[0], input.c_str(), binary.size());
return (encodeBase64(binary));
}
string decode64(const string& input) {
vector<uint8_t> binary;
decodeBase64(input, binary);
string result;
result.resize(binary.size());
memmove(&result[0], &binary[0], result.size());
return (result);
}
} // end of anonymous namespace
namespace isc {
namespace yang {
TranslatorBasic::TranslatorBasic(S_Session session, const string& model)
: session_(session), model_(model) {
}
TranslatorBasic::~TranslatorBasic() {
}
ElementPtr
TranslatorBasic::value(sysrepo::S_Val s_val) {
if (!s_val) {
isc_throw(BadValue, "value called with null");
}
switch (s_val->type()) {
case SR_CONTAINER_T:
case SR_CONTAINER_PRESENCE_T:
// Internal node.
return (ElementPtr());
case SR_LIST_T:
return (Element::createList());
case SR_STRING_T:
return (Element::create(string(s_val->data()->get_string())));
case SR_BOOL_T:
return (Element::create(s_val->data()->get_bool() ? true : false));
case SR_UINT8_T:
return (Element::create(static_cast<long long>(s_val->data()->get_uint8())));
case SR_UINT16_T:
return (Element::create(static_cast<long long>(s_val->data()->get_uint16())));
case SR_UINT32_T:
return (Element::create(static_cast<long long>(s_val->data()->get_uint32())));
case SR_INT8_T:
return (Element::create(static_cast<long long>(s_val->data()->get_int8())));
case SR_INT16_T:
return (Element::create(static_cast<long long>(s_val->data()->get_int16())));
case SR_INT32_T:
return (Element::create(static_cast<long long>(s_val->data()->get_int32())));
case SR_DECIMAL64_T:
return (Element::create(s_val->data()->get_decimal64()));
case SR_IDENTITYREF_T:
return (Element::create(string(s_val->data()->get_identityref())));
case SR_ENUM_T:
return (Element::create(string(s_val->data()->get_enum())));
case SR_BINARY_T:
return (Element::create(decode64(s_val->data()->get_binary())));
default:
isc_throw(NotImplemented,
"value called with unsupported type: " << s_val->type());
}
}
ElementPtr
TranslatorBasic::getItem(const string& xpath) {
S_Val s_val;
try {
s_val = session_->get_item(xpath.c_str());
} catch (const sysrepo_exception& ex) {
if (std::string(ex.what()).find("Item not found") != string::npos) {
// The YANG configuration node was not there.
return nullptr;
}
isc_throw(SysrepoError, "sysrepo error getting item at '" << xpath
<< "': " << ex.what());
}
if (!s_val) {
return (ElementPtr());
}
return (value(s_val));
}
ElementPtr
TranslatorBasic::getItems(const string& xpath) {
S_Vals s_vals(getValuesFromItems(xpath));
if (!s_vals) {
return (ElementPtr());
}
ElementPtr result(Element::createList());
try {
for (size_t i = 0; i < s_vals->val_cnt(); ++i) {
S_Val s_val = s_vals->val(i);
result->add(value(s_val));
}
} catch (const sysrepo_exception& ex) {
isc_throw(SysrepoError, "sysrepo error getting item at '"
<< xpath << "': " << ex.what());
}
return (result);
}
S_Val
TranslatorBasic::value(ConstElementPtr elem, sr_type_t type) {
if (!elem) {
isc_throw(BadValue, "value called with null");
}
S_Val s_val;
switch (type) {
case SR_CONTAINER_T:
case SR_CONTAINER_PRESENCE_T:
isc_throw(NotImplemented, "value called for a container");
case SR_LIST_T:
if (elem->getType() != Element::list) {
isc_throw(BadValue, "value for a list called with not a list: "
<< elem->str());
}
// Return null.
break;
case SR_STRING_T:
case SR_IDENTITYREF_T:
case SR_ENUM_T:
if (elem->getType() != Element::string) {
isc_throw(BadValue,
"value for a string called with not a string: "
<< elem->str());
}
s_val.reset(new Val(elem->stringValue().c_str(), type));
break;
case SR_BOOL_T:
if (elem->getType() != Element::boolean) {
isc_throw(BadValue,
"value for a boolean called with not a boolean: "
<< elem->str());
}
s_val.reset(new Val(elem->boolValue(), type));
break;
case SR_UINT8_T:
if (elem->getType() != Element::integer) {
isc_throw(BadValue,
"value for an integer called with not an integer: "
<< elem->str());
}
s_val.reset(new Val(elem->intValue(), type));
break;
case SR_UINT16_T:
if (elem->getType() != Element::integer) {
isc_throw(BadValue,
"value for an integer called with not an integer: "
<< elem->str());
}
s_val.reset(new Val(elem->intValue(), type));
break;
case SR_UINT32_T:
if (elem->getType() != Element::integer) {
isc_throw(BadValue,
"value for an integer called with not an integer: "
<< elem->str());
}
s_val.reset(new Val(elem->intValue(), type));
break;
case SR_INT8_T:
if (elem->getType() != Element::integer) {
isc_throw(BadValue,
"value for an integer called with not an integer: "
<< elem->str());
}
s_val.reset(new Val(elem->intValue(), type));
break;
case SR_INT16_T:
if (elem->getType() != Element::integer) {
isc_throw(BadValue,
"value for an integer called with not an integer: "
<< elem->str());
}
s_val.reset(new Val(elem->intValue(), type));
break;
case SR_INT32_T:
if (elem->getType() != Element::integer) {
isc_throw(BadValue,
"value for an integer called with not an integer: "
<< elem->str());
}
s_val.reset(new Val(elem->intValue(), type));
break;
case SR_DECIMAL64_T:
if (elem->getType() != Element::real) {
isc_throw(BadValue, "value for a real called with not a real");
}
s_val.reset(new Val(elem->doubleValue()));
break;
case SR_BINARY_T:
if (elem->getType() != Element::string) {
isc_throw(BadValue,
"value for a base64 called with not a string: "
<< elem->str());
}
s_val.reset(new Val(encode64(elem->stringValue()).c_str(), type));
break;
default:
isc_throw(NotImplemented,
"value called with unsupported type: " << type);
}
return (s_val);
}
void
TranslatorBasic::setItem(const string& xpath, ConstElementPtr elem,
sr_type_t type) {
S_Val s_val = value(elem, type);
try {
session_->set_item(xpath.c_str(), s_val);
} catch (const sysrepo_exception& ex) {
isc_throw(SysrepoError,
"sysrepo error setting item '" << elem->str()
<< "' at '" << xpath << "': " << ex.what());
}
session_->apply_changes();
}
void
TranslatorBasic::checkAndGetLeaf(ElementPtr& storage,
const std::string& xpath,
const std::string& name) {
ConstElementPtr x = getItem(xpath + "/" + name);
if (x) {
storage->set(name, x);
}
}
void TranslatorBasic::checkAndSetLeaf(ConstElementPtr const& from,
string const& xpath,
string const& name,
sr_type_t const type) {
ConstElementPtr const& x(from->get(name));
if (x) {
setItem(xpath + "/" + name, x, type);
}
}
void
TranslatorBasic::delItem(const std::string& xpath) {
try {
session_->delete_item(xpath.c_str());
} catch (const sysrepo_exception& ex) {
if (std::string(ex.what()).find("Invalid argument") != string::npos) {
// The YANG configuration node was not there.
return;
}
isc_throw(SysrepoError,
"sysrepo error deleting item at '"
<< xpath << "': " << ex.what());
}
session_->apply_changes();
}
S_Vals TranslatorBasic::getValuesFromItems(std::string const& xpath) {
try {
return session_->get_items(xpath.c_str());
} catch (sysrepo::sysrepo_exception const& exception) {
isc_throw(SysrepoError, "sysrepo error getting items: " << exception.what());
}
}
} // namespace yang
} // namespace isc
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