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-rw-r--r--src/lib/yang/adaptor_config.cc658
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diff --git a/src/lib/yang/adaptor_config.cc b/src/lib/yang/adaptor_config.cc
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+++ b/src/lib/yang/adaptor_config.cc
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+// Copyright (C) 2018-2022 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/adaptor_config.h>
+
+using namespace std;
+using namespace isc::data;
+using namespace isc::dhcp;
+
+namespace {
+const string DHCP4_SPACE = "dhcp4";
+const string DHCP6_SPACE = "dhcp6";
+}
+
+namespace isc {
+namespace yang {
+
+AdaptorConfig::AdaptorConfig() {
+}
+
+AdaptorConfig::~AdaptorConfig() {
+}
+
+bool
+AdaptorConfig::subnetsCollectID(ConstElementPtr subnets, SubnetIDSet& set) {
+ bool have_ids = true;
+
+ if (!subnets || subnets->empty()) {
+ // There are no subnets defined, so technically there are no ids.
+ // However, the flag is used to determine whether the code later
+ // needs to call assignIDs. Since there is no need to assign
+ // anything, the code returns true here.
+ return (true);
+ }
+
+ // If there are subnets defined, let's go over them one by one and
+ // collect subnet-ids used in them.
+ for (ConstElementPtr subnet : subnets->listValue()) {
+ if (!collectID(subnet, set)) {
+ have_ids = false;
+ }
+ }
+ return (have_ids);
+}
+
+bool
+AdaptorConfig::sharedNetworksCollectID(ConstElementPtr networks,
+ SubnetIDSet& set,
+ const string& subsel) {
+ if (!networks || networks->empty()) {
+ // There are no shared networks defined, so technically there are no
+ // ids. However, the flag is used to determine whether the code later
+ // needs to call assignIDs. Since there is no need to assign anything,
+ // the code returns true here.
+ return (true);
+ }
+
+ // This determines if EVERY subnet has subnet-id defined.
+ bool have_ids = true;
+ for (size_t i = 0; i < networks->size(); ++i) {
+ ElementPtr network = networks->getNonConst(i);
+ ConstElementPtr subnets = network->get(subsel);
+ if (subnets) {
+ if (!subnets->empty()) {
+ // If there are subnets, collect their subnet-ids. If any
+ // of them doesn't have a subnet-id, return false.
+ if (!subnetsCollectID(subnets, set)) {
+ have_ids = false;
+ }
+ } else {
+ // There's empty subnets list, so just remove it.
+ network->remove(subsel);
+ }
+ }
+ }
+ return (have_ids);
+}
+
+void
+AdaptorConfig::subnetsAssignID(ConstElementPtr subnets, SubnetIDSet& set,
+ SubnetID& next) {
+ if (!subnets || subnets->empty()) {
+ // nothing to do here.
+ return;
+ }
+
+ for (size_t i = 0; i < subnets->size(); ++i) {
+ ElementPtr subnet = subnets->getNonConst(i);
+ assignID(subnet, set, next);
+ }
+}
+
+void
+AdaptorConfig::sharedNetworksAssignID(ConstElementPtr networks,
+ SubnetIDSet& set, SubnetID& next,
+ const string& subsel) {
+ if (!networks || networks->empty()) {
+ // nothing to do here.
+ return;
+ }
+
+ for (ConstElementPtr network : networks->listValue()) {
+ ConstElementPtr subnets = network->get(subsel);
+ if (!subnets || subnets->empty()) {
+ continue;
+ }
+
+ for (size_t i = 0; i < subnets->size(); ++i) {
+ ElementPtr subnet = subnets->getNonConst(i);
+ assignID(subnet, set, next);
+ }
+ }
+}
+
+void
+AdaptorConfig::sanitizePools(ConstElementPtr pools) {
+ if (!pools || pools->empty()) {
+ // nothing to do here.
+ return;
+ }
+
+ // Canonize (clean up name, remove extra spaces, add one space where
+ // needed) every pool on the list.
+ for (size_t i = 0; i < pools->size(); ++i) {
+ ElementPtr pool = pools->getNonConst(i);
+ AdaptorPool::canonizePool(pool);
+ }
+}
+
+void
+AdaptorConfig::sanitizePoolsInSubnets(ConstElementPtr subnets) {
+ if (!subnets || subnets->empty()) {
+ // nothing to do here.
+ return;
+ }
+
+ for (ConstElementPtr subnet : subnets->listValue()) {
+ sanitizePools(subnet->get("pools"));
+ }
+}
+
+void
+AdaptorConfig::sanitizePoolsInSharedNetworks(ConstElementPtr networks,
+ const string& subsel) {
+ if (!networks || networks->empty()) {
+ // nothing to do here.
+ return;
+ }
+
+ for (ConstElementPtr network : networks->listValue()) {
+ sanitizePoolsInSubnets(network->get(subsel));
+ }
+}
+
+void
+AdaptorConfig::sanitizeOptionDefList(ConstElementPtr defs,
+ const string& space,
+ OptionCodes& codes) {
+ if (!defs || defs->empty()) {
+ // nothing to do here.
+ return;
+ }
+
+ // Do sanity checks on every option definition and fill any missing
+ // fields with default values.
+ for (size_t i = 0; i < defs->size(); ++i) {
+ ElementPtr def = defs->getNonConst(i);
+ checkCode(def);
+ checkType(def);
+ setSpace(def, space);
+ collect(def, codes);
+ }
+}
+
+void
+AdaptorConfig::sanitizeOptionDataList(ConstElementPtr options,
+ const string& space,
+ const OptionCodes& codes) {
+ if (!options || options->empty()) {
+ // nothing to do here.
+ return;
+ }
+
+ // Sanitize option-data. The only missing elements we may possibly
+ // need to fill are option space and option code.
+ for (size_t i = 0; i < options->size(); ++i) {
+ ElementPtr option = options->getNonConst(i);
+ setSpace(option, space);
+ setCode(option, codes);
+ }
+}
+
+void
+AdaptorConfig::sanitizeOptionClasses(ConstElementPtr classes,
+ const string& space,
+ OptionCodes& codes) {
+ if (!classes || classes->empty()) {
+ // nothing to do here.
+ return;
+ }
+
+ // For every client class defined...
+ for (size_t i = 0; i < classes->size(); ++i) {
+ ElementPtr cclass = classes->getNonConst(i);
+
+ if (space == DHCP4_SPACE) {
+ ConstElementPtr options = cclass->get("option-def");
+ if (options) {
+ if (!options->empty()) {
+ // If present, sanitize it.
+ sanitizeOptionDefList(options, space, codes);
+ } else {
+ // If empty, remove it.
+ cclass->remove("option-def");
+ }
+ }
+ }
+
+ // also sanitize option data.
+ ConstElementPtr options = cclass->get("option-data");
+ if (options) {
+ if (!options->empty()) {
+ // If present, sanitize it.
+ sanitizeOptionDataList(options, space, codes);
+ } else {
+ // If empty, remove it.
+ cclass->remove("option-data");
+ }
+ }
+ }
+}
+
+void
+AdaptorConfig::sanitizeOptionPools(ConstElementPtr pools, const string& space,
+ const OptionCodes& codes) {
+ if (!pools || pools->empty()) {
+ // nothing to do here.
+ return;
+ }
+
+ for (size_t i = 0; i < pools->size(); ++i) {
+ ElementPtr pool = pools->getNonConst(i);
+ ConstElementPtr options = pool->get("option-data");
+ if (options) {
+ if (!options->empty()) {
+ sanitizeOptionDataList(options, space, codes);
+ } else {
+ pool->remove("option-data");
+ }
+ }
+ }
+}
+
+void
+AdaptorConfig::sanitizeOptionHosts(ConstElementPtr hosts, const string& space,
+ const OptionCodes& codes) {
+ if (!hosts || hosts->empty()) {
+ // nothing to do here.
+ return;
+ }
+
+ for (size_t i = 0; i < hosts->size(); ++i) {
+ ElementPtr host = hosts->getNonConst(i);
+ ConstElementPtr options = host->get("option-data");
+ if (options) {
+ if (!options->empty()) {
+ sanitizeOptionDataList(options, space, codes);
+ } else {
+ host->remove("option-data");
+ }
+ }
+ }
+}
+
+void
+AdaptorConfig::sanitizeOptionSubnets(ConstElementPtr subnets,
+ const string& space,
+ const OptionCodes& codes) {
+ if (!subnets || subnets->empty()) {
+ // nothing to do here.
+ return;
+ }
+
+ for (size_t i = 0; i < subnets->size(); ++i) {
+ ElementPtr subnet = subnets->getNonConst(i);
+
+ // Let's try to sanitize option-data first.
+ ConstElementPtr options = subnet->get("option-data");
+ if (options) {
+ if (!options->empty()) {
+ sanitizeOptionDataList(options, space, codes);
+ } else {
+ subnet->remove("option-data");
+ }
+ }
+
+ // Then try to sanitize pools.
+ ConstElementPtr pools = subnet->get("pools");
+ if (pools) {
+ if (!pools->empty()) {
+ sanitizeOptionPools(pools, space, codes);
+ } else {
+ subnet->remove("pools");
+ }
+ }
+
+ // If this is v6, also sanitize pd-pools.
+ if (space == DHCP6_SPACE) {
+ ConstElementPtr pools = subnet->get("pd-pools");
+ if (pools) {
+ if (!pools->empty()) {
+ sanitizeOptionPools(pools, space, codes);
+ } else {
+ subnet->remove("pd-pools");
+ }
+ }
+ }
+
+ // Finally, sanitize host reservations.
+ ConstElementPtr hosts = subnet->get("reservations");
+ if (hosts) {
+ if (!hosts->empty()) {
+ sanitizeOptionHosts(hosts, space, codes);
+ } else {
+ subnet->remove("reservations");
+ }
+ }
+ }
+}
+
+void
+AdaptorConfig::sanitizeOptionSharedNetworks(ConstElementPtr networks,
+ const string& space,
+ const OptionCodes& codes) {
+ if (!networks || networks->empty()) {
+ // nothing to do here.
+ return;
+ }
+
+ // For every shared network...
+ for (size_t i = 0; i < networks->size(); ++i) {
+ ElementPtr network = networks->getNonConst(i);
+
+ // try to sanitize shared network options first.
+ ConstElementPtr options = network->get("option-data");
+ if (options) {
+ if (!options->empty()) {
+ sanitizeOptionDataList(options, space, codes);
+ } else {
+ network->remove("option-data");
+ }
+ }
+ string subnet = "subnet";
+ if (space == DHCP4_SPACE) {
+ subnet += "4";
+ } else {
+ subnet += "6";
+ }
+
+ // Now try to sanitize subnets.
+ ConstElementPtr subnets = network->get(subnet);
+ if (subnets) {
+ if (!subnets->empty()) {
+ sanitizeOptionSubnets(subnets, space, codes);
+ } else {
+ network->remove(subnet);
+ }
+ }
+ }
+}
+
+void
+AdaptorConfig::sanitizeRequireClassesPools(ConstElementPtr pools) {
+ if (!pools || pools->empty()) {
+ // nothing to do here.
+ return;
+ }
+
+ for (size_t i = 0; i < pools->size(); ++i) {
+ ElementPtr pool = pools->getNonConst(i);
+ ConstElementPtr requires = pool->get("require-client-classes");
+ if (requires && requires->empty()) {
+ pool->remove("require-client-classes");
+ }
+ }
+}
+
+void
+AdaptorConfig::sanitizeRequireClassesSubnets(ConstElementPtr subnets) {
+ if (!subnets || subnets->empty()) {
+ // nothing to do here.
+ return;
+ }
+
+ for (size_t i = 0; i < subnets->size(); ++i) {
+ ElementPtr subnet = subnets->getNonConst(i);
+ sanitizeRequireClassesPools(subnet->get("pools"));
+ sanitizeRequireClassesPools(subnet->get("pd-pools"));
+ ConstElementPtr requires = subnet->get("require-client-classes");
+ if (requires && requires->empty()) {
+ subnet->remove("require-client-classes");
+ }
+ }
+}
+
+void
+AdaptorConfig::requireClassesSharedNetworks(ConstElementPtr networks,
+ const string& subsel) {
+ if (!networks || networks->empty()) {
+ // nothing to do here.
+ return;
+ }
+
+ for (size_t i = 0; i < networks->size(); ++i) {
+ ElementPtr network = networks->getNonConst(i);
+ sanitizeRequireClassesSubnets(network->get(subsel));
+ ConstElementPtr requires = network->get("require-client-classes");
+ if (requires && requires->empty()) {
+ network->remove("require-client-classes");
+ }
+ }
+}
+
+void
+AdaptorConfig::sanitizeHostList(ConstElementPtr hosts) {
+
+ if (!hosts || hosts->empty()) {
+ // nothing to do here.
+ return;
+ }
+
+ for (size_t i = 0; i < hosts->size(); ++i) {
+ ElementPtr host = hosts->getNonConst(i);
+ quoteIdentifier(host);
+ }
+}
+
+void
+AdaptorConfig::sanitizeHostSubnets(ConstElementPtr subnets) {
+
+ if (!subnets || subnets->empty()) {
+ // nothing to do here.
+ return;
+ }
+
+ for (ConstElementPtr subnet : subnets->listValue()) {
+ sanitizeHostList(subnet->get("reservations"));
+ }
+}
+
+void
+AdaptorConfig::SanitizeHostsInSharedNetworks(ConstElementPtr networks,
+ const string& space) {
+ if (!networks || networks->empty()) {
+ // nothing to do here.
+ return;
+ }
+
+ for (ConstElementPtr network : networks->listValue()) {
+ if (space == DHCP4_SPACE) {
+ sanitizeHostSubnets(network->get("subnet4"));
+ } else {
+ sanitizeHostSubnets(network->get("subnet6"));
+ }
+ }
+}
+
+void
+AdaptorConfig::sanitizeRelaySubnets(ConstElementPtr subnets) {
+ if (!subnets || subnets->empty()) {
+ // nothing to do here.
+ return;
+ }
+
+ for (size_t i = 0; i < subnets->size(); ++i) {
+ ElementPtr subnet = subnets->getNonConst(i);
+ updateRelay(subnet);
+ }
+}
+
+void
+AdaptorConfig::sanitizeRelayInSharedNetworks(ConstElementPtr networks,
+ const string& subsel) {
+ if (!networks || networks->empty()) {
+ // nothing to do here.
+ return;
+ }
+
+ for (size_t i = 0; i < networks->size(); ++i) {
+ ElementPtr network = networks->getNonConst(i);
+ updateRelay(network);
+ sanitizeRelaySubnets(network->get(subsel));
+ }
+}
+
+void
+AdaptorConfig::sanitizeDatabase(ConstElementPtr dhcp) {
+ ConstElementPtr database = dhcp->get("hosts-database");
+ if (!database) {
+ // nothing to do here.
+ return;
+ }
+
+ ElementPtr mutable_dhcp = boost::const_pointer_cast<Element>(dhcp);
+ mutable_dhcp->remove("hosts-database");
+ ElementPtr list = Element::createList();
+ list->add(boost::const_pointer_cast<Element>(database));
+ mutable_dhcp->set("hosts-databases", list);
+}
+
+void
+AdaptorConfig::sanitizeRelaySuppliedOptions(ConstElementPtr dhcp) {
+ ConstElementPtr options = dhcp->get("relay-supplied-options");
+ if (!options || !options->empty()) {
+ // nothing to do here.
+ return;
+ }
+ ElementPtr mutable_dhcp = boost::const_pointer_cast<Element>(dhcp);
+ mutable_dhcp->remove("relay-supplied-options");
+}
+
+void
+AdaptorConfig::preProcess(ElementPtr dhcp, const string& subsel,
+ const string& space) {
+ if (!dhcp) {
+ isc_throw(BadValue, "preProcess: null DHCP config");
+ }
+ bool have_ids = true;
+ SubnetIDSet set;
+ ConstElementPtr subnets = dhcp->get(subsel);
+ if (subnets) {
+ if (!subnets->empty()) {
+ if (!subnetsCollectID(subnets, set)) {
+ have_ids = false;
+ }
+ } else {
+ dhcp->remove(subsel);
+ }
+ }
+ ConstElementPtr networks = dhcp->get("shared-networks");
+ if (networks) {
+ if (!networks->empty()) {
+ if (!sharedNetworksCollectID(networks, set, subsel)) {
+ have_ids = false;
+ }
+ } else {
+ dhcp->remove("shared-networks");
+ }
+ }
+
+ if (!have_ids) {
+ SubnetID next(1);
+ subnetsAssignID(subnets, set, next);
+ sharedNetworksAssignID(networks, set, next, subsel);
+ }
+
+ OptionCodes codes;
+ initCodes(codes, space);;
+ ConstElementPtr defs = dhcp->get("option-def");
+ if (defs) {
+ if (!defs->empty()) {
+ sanitizeOptionDefList(defs, space, codes);
+ } else {
+ dhcp->remove("option-def");
+ }
+ }
+ ConstElementPtr options = dhcp->get("option-data");
+ if (options) {
+ if (!options->empty()) {
+ sanitizeOptionDataList(options, space, codes);
+ } else {
+ dhcp->remove("option-data");
+ }
+ }
+ ConstElementPtr classes = dhcp->get("client-classes");
+ if (classes) {
+ if (!classes->empty()) {
+ sanitizeOptionClasses(classes, space, codes);
+ } else {
+ dhcp->remove("client-classes");
+ }
+ }
+ ConstElementPtr hosts = dhcp->get("reservations");
+ if (hosts) {
+ if (!hosts->empty()) {
+ sanitizeHostList(hosts);
+ sanitizeOptionHosts(hosts, space, codes);
+ } else {
+ dhcp->remove("reservations");
+ }
+ }
+ sanitizeOptionSubnets(subnets, space, codes);
+ sanitizeOptionSharedNetworks(networks, space, codes);
+
+ sanitizePoolsInSubnets(subnets);
+ sanitizePoolsInSharedNetworks(networks, subsel);
+
+ sanitizeHostSubnets(subnets);
+ SanitizeHostsInSharedNetworks(networks, space);
+
+ sanitizeRelaySubnets(subnets);
+ sanitizeRelayInSharedNetworks(networks, subsel);
+
+ sanitizeRequireClassesSubnets(subnets);
+ requireClassesSharedNetworks(networks, subsel);
+
+ sanitizeDatabase(dhcp);
+
+ if (space == DHCP6_SPACE) {
+ sanitizeRelaySuppliedOptions(dhcp);
+ }
+}
+
+void
+AdaptorConfig::preProcess4(ConstElementPtr config) {
+ if (!config) {
+ isc_throw(BadValue, "preProcess4: null config");
+ }
+ if (config->getType() != Element::map) {
+ isc_throw(BadValue, "preProcess4: not map: " << config->str());
+ }
+ if (config->contains("Logging")) {
+ isc_throw(BadValue, "preProcess4: got Logging object");
+ }
+ ConstElementPtr dhcp = config->get("Dhcp4");
+ if (!dhcp) {
+ return;
+ }
+ ElementPtr mutable_dhcp = boost::const_pointer_cast<Element>(dhcp);
+ preProcess(mutable_dhcp, "subnet4", DHCP4_SPACE);
+}
+
+void
+AdaptorConfig::preProcess6(ConstElementPtr config) {
+ if (!config) {
+ isc_throw(BadValue, "preProcess6: null config");
+ }
+ if (config->getType() != Element::map) {
+ isc_throw(BadValue, "preProcess6: not map: " << config->str());
+ }
+ if (config->contains("Logging")) {
+ isc_throw(BadValue, "preProcess6: got Logging object");
+ }
+ ConstElementPtr dhcp = config->get("Dhcp6");
+ if (!dhcp) {
+ return;
+ }
+ ElementPtr mutable_dhcp = boost::const_pointer_cast<Element>(dhcp);
+ preProcess(mutable_dhcp, "subnet6", DHCP6_SPACE);
+}
+
+} // end of namespace isc::yang
+} // end of namespace isc
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