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+// Copyright (C) 2017-2019 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/.
+
+#ifndef SHARED_NETWORKS_LIST_PARSER_H
+#define SHARED_NETWORKS_LIST_PARSER_H
+
+#include <cc/data.h>
+#include <cc/dhcp_config_error.h>
+#include <cc/simple_parser.h>
+#include <exceptions/exceptions.h>
+#include <dhcpsrv/subnet.h>
+#include <dhcpsrv/parsers/shared_network_parser.h>
+#include <vector>
+
+namespace isc {
+namespace dhcp {
+
+/// @brief Parser for a list of shared networks.
+///
+/// This is a generic parser for a list of IPv4 or IPv6 shared networks.
+///
+/// @tparam SharedNetworkParserType Type of the parser to be used for
+/// parsing shared network, i.e. @ref SharedNetwork4Parser or
+/// @ref SharedNetwork6Parser.
+template<typename SharedNetworkParserType>
+class SharedNetworksListParser : public data::SimpleParser {
+public:
+
+ /// @brief Constructor.
+ ///
+ /// @param check_iface Check if the specified interface exists in
+ /// the system.
+ SharedNetworksListParser(bool check_iface = true)
+ : check_iface_(check_iface) {
+ }
+
+ /// @brief Parses a list of shared networks.
+ ///
+ /// @tparam CfgSharedNetworksTypePtr Type of the configuration structure
+ /// into which the result will be stored, i.e. @ref CfgSharedNetworks4
+ /// or @ref CfgSharedNetworks6.
+ /// @param [out] cfg Shared networks configuration structure into which
+ /// the data should be parsed.
+ /// @param shared_networks_list_data List element holding a list of
+ /// shared networks.
+ ///
+ /// @throw DhcpConfigError when error has occurred, e.g. when networks
+ /// with duplicated names have been specified.
+ template<typename CfgSharedNetworksTypePtr>
+ void parse(CfgSharedNetworksTypePtr& cfg,
+ const data::ConstElementPtr& shared_networks_list_data) {
+ try {
+ // Get the C++ vector holding networks.
+ const std::vector<data::ElementPtr>& networks_list =
+ shared_networks_list_data->listValue();
+ // Iterate over all networks and do the parsing.
+ for (auto network_element = networks_list.cbegin();
+ network_element != networks_list.cend(); ++network_element) {
+ SharedNetworkParserType parser(check_iface_);
+ auto network = parser.parse(*network_element);
+ cfg->add(network);
+ }
+ } catch (const DhcpConfigError&) {
+ // Such exceptions are emitted by the lower level parsers and
+ // errors should already include element's positions. So, we
+ // simply rethrow.
+ throw;
+
+ } catch (const std::exception& ex) {
+ // Other exceptions don't include positions of the elements, so
+ // we should append one.
+ isc_throw(DhcpConfigError, ex.what() << " ("
+ << shared_networks_list_data->getPosition() << ")");
+ }
+ }
+
+protected:
+ /// Check if the specified interface exists in the system.
+ bool check_iface_;
+};
+
+/// @brief Type of the shared networks list parser for IPv4.
+typedef SharedNetworksListParser<SharedNetwork4Parser> SharedNetworks4ListParser;
+
+/// @brief Type of the shared networks list parser for IPv6.
+typedef SharedNetworksListParser<SharedNetwork6Parser> SharedNetworks6ListParser;
+
+
+} // end of namespace isc::dhcp
+} // end of namespace isc
+
+#endif // SHARED_NETWORKS_LIST_PARSER_H