Adding upstream version 2.4.1.upstream/2.4.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 186 insertions, 0 deletions

diff --git a/src/lib/dhcpsrv/cfg_globals.cc b/src/lib/dhcpsrv/cfg_globals.cc
new file mode 100644
index 0000000..a8083e0
--- /dev/null
+++ b/src/lib/dhcpsrv/cfg_globals.cc
@@ -0,0 +1,186 @@
+// Copyright (C) 2021-2023 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/.
+
+#include <config.h>
+#include <dhcpsrv/cfg_globals.h>
+
+using namespace isc::data;
+
+namespace isc {
+namespace dhcp {
+
+const std::map<std::string, int>
+CfgGlobals::nameToIndex = {
+    // Common parameters.
+    { "valid-lifetime", VALID_LIFETIME },
+    { "min-valid-lifetime", MIN_VALID_LIFETIME },
+    { "max-valid-lifetime", MAX_VALID_LIFETIME },
+    { "renew-timer", RENEW_TIMER },
+    { "rebind-timer", REBIND_TIMER },
+    { "decline-probation-period", DECLINE_PROBATION_PERIOD },
+    { "dhcp4o6-port", DHCP4O6_PORT },
+    { "comment", COMMENT },
+    { "server-tag", SERVER_TAG },
+    { "reservation-mode", RESERVATION_MODE },
+    { "reservations-global", RESERVATIONS_GLOBAL },
+    { "reservations-in-subnet", RESERVATIONS_IN_SUBNET },
+    { "reservations-out-of-pool", RESERVATIONS_OUT_OF_POOL },
+    { "calculate-tee-times", CALCULATE_TEE_TIMES },
+    { "t1-percent", T1_PERCENT },
+    { "t2-percent", T2_PERCENT },
+    { "hostname-char-set", HOSTNAME_CHAR_SET },
+    { "hostname-char-replacement", HOSTNAME_CHAR_REPLACEMENT },
+    { "ddns-send-updates", DDNS_SEND_UPDATES },
+    { "ddns-override-no-update", DDNS_OVERRIDE_NO_UPDATE },
+    { "ddns-override-client-update", DDNS_OVERRIDE_CLIENT_UPDATE },
+    { "ddns-replace-client-name", DDNS_REPLACE_CLIENT_NAME },
+    { "ddns-generated-prefix", DDNS_GENERATED_PREFIX },
+    { "ddns-qualifying-suffix", DDNS_QUALIFYING_SUFFIX },
+    { "store-extended-info", STORE_EXTENDED_INFO },
+    { "statistic-default-sample-count", STATISTIC_DEFAULT_SAMPLE_COUNT },
+    { "statistic-default-sample-age", STATISTIC_DEFAULT_SAMPLE_AGE },
+    { "cache-threshold", CACHE_THRESHOLD },
+    { "cache-max-age", CACHE_MAX_AGE },
+    { "early-global-reservations-lookup", EARLY_GLOBAL_RESERVATIONS_LOOKUP },
+    { "ip-reservations-unique", IP_RESERVATIONS_UNIQUE },
+    { "reservations-lookup-first", RESERVATIONS_LOOKUP_FIRST },
+    { "ddns-update-on-renew", DDNS_UPDATE_ON_RENEW },
+    { "ddns-use-conflict-resolution", DDNS_USE_CONFLICT_RESOLUTION },
+    { "parked-packet-limit", PARKED_PACKET_LIMIT },
+    { "allocator", ALLOCATOR },
+    { "ddns-ttl-percent", DDNS_TTL_PERCENT },
+
+    // DHCPv4 specific parameters.
+    { "echo-client-id", ECHO_CLIENT_ID },
+    { "match-client-id", MATCH_CLIENT_ID },
+    { "authoritative", AUTHORITATIVE },
+    { "next-server", NEXT_SERVER },
+    { "server-hostname", SERVER_HOSTNAME },
+    { "boot-file-name", BOOT_FILE_NAME },
+    { "offer-lifetime", OFFER_LIFETIME },
+
+    // DHCPv6 specific parameters.
+    { "data-directory", DATA_DIRECTORY },
+    { "preferred-lifetime", PREFERRED_LIFETIME },
+    { "min-preferred-lifetime", MIN_PREFERRED_LIFETIME },
+    { "max-preferred-lifetime", MAX_PREFERRED_LIFETIME },
+    { "pd-allocator", PD_ALLOCATOR }
+};
+
+// Load time sanity check.
+namespace {
+struct CfgGlobalsChecks {
+    CfgGlobalsChecks() {
+        // Check the size for missing entries.
+        if (CfgGlobals::nameToIndex.size() != CfgGlobals::SIZE) {
+            isc_throw(Unexpected, "CfgGlobals::nameToIndex has "
+                      << CfgGlobals::nameToIndex.size()
+                      << " elements (expected " << CfgGlobals::SIZE << ")");
+        }
+
+        // Build the name vector.
+        std::vector<std::string> names;
+        names.resize(CfgGlobals::SIZE);
+        for (auto it = CfgGlobals::nameToIndex.cbegin();
+             it != CfgGlobals::nameToIndex.cend(); ++it) {
+            int idx = it->second;
+            if ((idx < 0) || (idx >= CfgGlobals::SIZE)) {
+                isc_throw(Unexpected, "invalid index " << idx
+                          << " for name " << it->first);
+            }
+            if (!names[idx].empty()) {
+                isc_throw(Unexpected, "duplicated names for " << idx
+                          << " got " << names[idx]);
+            }
+            names[idx] = it->first;
+        }
+
+        // No name should be empty.
+        for (int idx = 0; idx < CfgGlobals::SIZE; ++idx) {
+            if (names[idx].empty()) {
+                isc_throw(Unexpected, "missing name for " << idx);
+            }
+        }
+    }
+};
+
+CfgGlobalsChecks check;
+} // end of anonymous namespace
+
+CfgGlobals::CfgGlobals() : values_(SIZE) {
+}
+
+ConstElementPtr
+CfgGlobals::get(const std::string& name) const {
+    auto const& it = nameToIndex.find(name);
+    if (it == nameToIndex.cend()) {
+        isc_throw(NotFound, "invalid global parameter name '" << name << "'");
+    }
+    return (get(it->second));
+}
+
+ConstElementPtr
+CfgGlobals::get(int index) const {
+    if ((index < 0) || (index >= CfgGlobals::SIZE)) {
+        isc_throw(OutOfRange, "invalid global parameter index " << index);
+    }
+    return (values_[index]);
+}
+
+void
+CfgGlobals::set(const std::string& name, ConstElementPtr value) {
+    auto const& it = nameToIndex.find(name);
+    if (it == nameToIndex.cend()) {
+        isc_throw(NotFound, "invalid global parameter name '" << name << "'");
+    }
+    set(it->second, value);
+}
+
+void
+CfgGlobals::set(int index, ConstElementPtr value) {
+    if ((index < 0) || (index >= CfgGlobals::SIZE)) {
+        isc_throw(OutOfRange, "invalid global parameter index " << index);
+    }
+    values_[index] = value;
+}
+
+void
+CfgGlobals::clear() {
+    for (int idx = 0; idx < CfgGlobals::SIZE; ++idx) {
+        if (values_[idx]) {
+            values_[idx] = ConstElementPtr();
+        }
+    }
+}
+
+const CfgGlobals::MapType
+CfgGlobals::valuesMap() const {
+    MapType map;
+    for (auto it = nameToIndex.cbegin(); it != nameToIndex.cend(); ++it) {
+        int idx = it->second;
+        ConstElementPtr value = values_[idx];
+        if (value) {
+            map.insert(make_pair(it->first, value));
+        }
+    }
+    return (map);
+}
+
+ElementPtr
+CfgGlobals::toElement() const {
+    ElementPtr result = Element::createMap();
+    for (auto it = nameToIndex.cbegin(); it != nameToIndex.cend(); ++it) {
+        int idx = it->second;
+        ConstElementPtr value = values_[idx];
+        if (value) {
+            result->set(it->first, value);
+        }
+    }
+    return (result);
+}
+
+} // namespace isc::dhcp
+} // namespace isc