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// Copyright (C) 2018-2023 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/.
/// @file
/// @brief Callout library for testing execution of the dhcp6_srv_configured
/// hook point.
///
static const int LIBRARY_NUMBER = 3;
#include <config.h>
#include <dhcp6/tests/callout_library_common.h>
#include <dhcpsrv/srv_config.h>
#include <string>
#include <vector>
using namespace isc::hooks;
// Functions accessed by the hooks framework use C linkage to avoid the name
// mangling that accompanies use of the C++ compiler as well as to avoid
// issues related to namespaces.
extern "C" {
int
do_load_impl(LibraryHandle& handle) {
// Determine if this callout is configured to fail.
isc::dhcp::SrvConfigPtr config;
isc::data::ConstElementPtr const& parameters(handle.getParameters());
isc::data::ConstElementPtr mode_element(parameters ? parameters->get("mode") : 0);
std::string mode(mode_element ? mode_element->stringValue() : "");
if (mode == "fail-on-load") {
return (1);
}
return (0);
}
int (*do_load)(isc::hooks::LibraryHandle& handle) = do_load_impl;
int (*do_unload)();
/// @brief Callout which appends library number and provided arguments to
/// the marker file for dhcp6_srv_configured callout.
///
/// @param handle callout handle passed to the callout.
///
/// @return 0 on success, 1 otherwise.
int
dhcp6_srv_configured(CalloutHandle& handle) {
// Append library number.
if (appendDigit(SRV_CONFIG_MARKER_FILE)) {
return (1);
}
// Append argument names.
std::vector<std::string> args = handle.getArgumentNames();
for (auto arg = args.begin(); arg != args.end(); ++arg) {
if (appendArgument(SRV_CONFIG_MARKER_FILE, arg->c_str()) != 0) {
return (1);
}
}
// Determine if this callout is configured to fail.
isc::dhcp::SrvConfigPtr config;
handle.getArgument("server_config", config);
isc::data::ConstElementPtr mode_element(config ? config->toElement() ?
config->toElement()->find("Dhcp6/hooks-libraries") ?
config->toElement()->find("Dhcp6/hooks-libraries")->get(0) ?
config->toElement()->find("Dhcp6/hooks-libraries")->get(0)->get("parameters") ?
config->toElement()->find("Dhcp6/hooks-libraries")->get(0)->get("parameters")->get("mode")
: 0 : 0 : 0 : 0 : 0);
std::string mode(mode_element ? mode_element->stringValue() : "");
if (mode == "fail-without-error") {
handle.setStatus(CalloutHandle::NEXT_STEP_DROP);
} else if (mode == "fail-with-error") {
std::string error("user explicitly configured me to fail");
handle.setArgument("error", error);
handle.setStatus(CalloutHandle::NEXT_STEP_DROP);
}
return (0);
}
/// @brief This function is called to retrieve the multi-threading compatibility.
///
/// @return 0 which means not compatible with multi-threading.
int multi_threading_compatible() {
return (0);
}
} // end extern "C"
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