diff options
Diffstat (limited to 'src/share/database/scripts/pgsql/upgrade_006.2_to_007.0.sh.in')
| -rw-r--r-- | src/share/database/scripts/pgsql/upgrade_006.2_to_007.0.sh.in | 2807 |
1 files changed, 2807 insertions, 0 deletions
diff --git a/src/share/database/scripts/pgsql/upgrade_006.2_to_007.0.sh.in b/src/share/database/scripts/pgsql/upgrade_006.2_to_007.0.sh.in new file mode 100644 index 0000000..0feeb0a --- /dev/null +++ b/src/share/database/scripts/pgsql/upgrade_006.2_to_007.0.sh.in @@ -0,0 +1,2807 @@ +#!/bin/sh + +# Copyright (C) 2021-2022 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/. + +# shellcheck disable=SC1091 +# SC1091: Not following: ... was not specified as input (see shellcheck -x). + +# Exit with error if commands exit with non-zero and if undefined variables are +# used. +set -eu + +# shellcheck disable=SC2034 +# SC2034: ... appears unused. Verify use (or export if used externally). +prefix="@prefix@" + +# Include utilities. Use installed version if available and +# use build version if it isn't. +if [ -e @datarootdir@/@PACKAGE_NAME@/scripts/admin-utils.sh ]; then + . "@datarootdir@/@PACKAGE_NAME@/scripts/admin-utils.sh" +else + . "@abs_top_builddir@/src/bin/admin/admin-utils.sh" +fi + +VERSION=$(pgsql_version "$@") + +if [ "$VERSION" != "6.2" ]; then + printf 'This script upgrades 6.2 to 7.0. ' + printf 'Reported version is %s. Skipping upgrade.\n' "${VERSION}" + exit 0 +fi + +psql "$@" >/dev/null <<EOF + +START TRANSACTION; + +-- This starts schema update to 7.0. It adds a lot (20+) of tables for the config backend. + + +-- Adding on update trigger in MySQL is as easy as using this column definition in CREATE TABLE: +-- modification_ts TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, +-- Sadly, Postgres has its own convoluted way of doing this. Luckily, the update pattern is +-- the same in many tables, so we can define the trigger function once and the use it everywhere. + +-- First, we need to define a function that will do the actual job. +-- This is used in many, many tables. +CREATE OR REPLACE FUNCTION modification_ts_update() + RETURNS trigger AS \$modification_ts_update\$ + BEGIN + new.modification_ts = CURRENT_TIMESTAMP; + RETURN NULL; + END; + +-- Second, we need to specify which language it was written in. +\$modification_ts_update\$ LANGUAGE plpgsql; + + +-- Create table modification and insert values for modification types. +CREATE TABLE modification ( + id smallint NOT NULL, + modification_type VARCHAR(32) NOT NULL, + PRIMARY KEY (id) +); +INSERT INTO modification VALUES (0,'create'), (1,'update'), (2,'delete'); + + + +-- Now create the table that holds different parameter data types. +CREATE TABLE parameter_data_type ( + id smallint NOT NULL, + name VARCHAR(32) NOT NULL, + PRIMARY KEY (id) +); +INSERT INTO parameter_data_type VALUES + (0,'integer'), + (1,'real'), + (2,'boolean'), + (4,'string'); + + + +-- This table doesn't exist in MySQL. However, it's nice to have an enum that explains what the values +-- in ddns_replace_client_name field in the dhcp{4,6}_shared_network table means. +CREATE TABLE ddns_replace_client_name_types ( + type INT8 PRIMARY KEY NOT NULL, + name VARCHAR(32) +); +-- See enum ReplaceClientNameMode in src/lib/dhcpsrv/d2_client_cfg.h +INSERT INTO ddns_replace_client_name_types (type, name) VALUES + (0, 'RCM_NEVER'), + (1, 'RCM_ALWAYS'), + (2, 'RCM_WHEN_PRESENT'), + (3, 'RCM_WHEN_NOT_PRESENT'); + + + +-- Create table for DHCPv6 servers +CREATE TABLE dhcp6_server ( + id SERIAL PRIMARY KEY NOT NULL, + tag VARCHAR(64) NOT NULL, + description TEXT DEFAULT NULL, + modification_ts TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP, + UNIQUE(tag) +); +CREATE INDEX dhcp6_server_idx1 ON dhcp6_server (modification_ts); +CREATE UNIQUE INDEX dhcp6_server_idx2 ON dhcp6_server(tag); +CREATE TRIGGER dhcp6_server_modification_ts_update + AFTER UPDATE ON dhcp6_server + FOR EACH ROW EXECUTE PROCEDURE modification_ts_update(); + +INSERT INTO dhcp6_server (tag, description) VALUES ('all','special type: all servers'); + +-- Create a table for storing IPv6 shared networks +CREATE TABLE dhcp6_shared_network ( + id SERIAL PRIMARY KEY NOT NULL, + name VARCHAR(128) UNIQUE NOT NULL, + client_class VARCHAR(128) DEFAULT NULL, + interface VARCHAR(128) DEFAULT NULL, + modification_ts TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP, + preferred_lifetime BIGINT DEFAULT NULL, + rapid_commit BOOLEAN DEFAULT NULL, + rebind_timer BIGINT DEFAULT NULL, + relay TEXT DEFAULT NULL, + renew_timer BIGINT DEFAULT NULL, + require_client_classes TEXT DEFAULT NULL, + user_context JSON DEFAULT NULL, + valid_lifetime BIGINT DEFAULT NULL, + calculate_tee_times BOOLEAN DEFAULT NULL, + t1_percent float DEFAULT NULL, + t2_percent float DEFAULT NULL, + interface_id BYTEA DEFAULT NULL, -- 128 bytes + min_preferred_lifetime BIGINT DEFAULT NULL, + max_preferred_lifetime BIGINT DEFAULT NULL, + min_valid_lifetime BIGINT DEFAULT NULL, + max_valid_lifetime BIGINT DEFAULT NULL, + ddns_send_updates BOOLEAN DEFAULT NULL, + ddns_override_no_update BOOLEAN DEFAULT NULL, + ddns_override_client_update BOOLEAN DEFAULT NULL, + ddns_replace_client_name INT8 DEFAULT NULL, + ddns_generated_prefix VARCHAR(255) DEFAULT NULL, + ddns_qualifying_suffix VARCHAR(255) DEFAULT NULL, + reservations_global BOOLEAN DEFAULT NULL, + reservations_in_subnet BOOLEAN DEFAULT NULL, + reservations_out_of_pool BOOLEAN DEFAULT NULL, + cache_threshold float DEFAULT NULL, + cache_max_age BIGINT DEFAULT NULL, + CONSTRAINT fk_ddns_replace_client_name FOREIGN KEY (ddns_replace_client_name) + REFERENCES ddns_replace_client_name_types (type) +); +CREATE INDEX dhcp6_shared_network_idx1 ON dhcp6_shared_network (name); + +CREATE TRIGGER dhcp6_shared_network_modification_ts_update + AFTER UPDATE ON dhcp6_shared_network + FOR EACH ROW EXECUTE PROCEDURE modification_ts_update(); + + + +-- Now we need to create a relationship between defined shared networks and the servers +CREATE TABLE dhcp6_shared_network_server ( + shared_network_id BIGINT NOT NULL, + server_id BIGINT NOT NULL, + modification_ts TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP, + PRIMARY KEY (shared_network_id, server_id), + CONSTRAINT fk_dhcp6_shared_network_server_server_id FOREIGN KEY (server_id) + REFERENCES dhcp6_server (id) ON DELETE CASCADE ON UPDATE NO ACTION, + CONSTRAINT fk_dhcp6_shared_network_server_shared_network_id FOREIGN KEY (shared_network_id) + REFERENCES dhcp6_shared_network (id) ON DELETE CASCADE ON UPDATE NO ACTION +); +CREATE INDEX dhcp6_shared_network_server_idx1 ON dhcp6_shared_network_server (modification_ts); +CREATE INDEX dhcp6_shared_network_server_idx2 ON dhcp6_shared_network_server (server_id); + + + +-- Create a list of IPv6 subnets +CREATE TABLE dhcp6_subnet ( + subnet_id BIGINT PRIMARY KEY NOT NULL, + subnet_prefix VARCHAR(64) UNIQUE NOT NULL, + client_class VARCHAR(128) DEFAULT NULL, + interface VARCHAR(128) DEFAULT NULL, + modification_ts TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP, + preferred_lifetime BIGINT DEFAULT NULL, + rapid_commit BOOLEAN DEFAULT NULL, + rebind_timer BIGINT DEFAULT NULL, + relay TEXT DEFAULT NULL, + renew_timer BIGINT DEFAULT NULL, + require_client_classes TEXT DEFAULT NULL, + shared_network_name VARCHAR(128) DEFAULT NULL, + user_context JSON DEFAULT NULL, + valid_lifetime BIGINT DEFAULT NULL, + calculate_tee_times BOOLEAN DEFAULT NULL, + t1_percent float DEFAULT NULL, + t2_percent float DEFAULT NULL, + interface_id BYTEA DEFAULT NULL, + min_preferred_lifetime BIGINT DEFAULT NULL, + max_preferred_lifetime BIGINT DEFAULT NULL, + min_valid_lifetime BIGINT DEFAULT NULL, + max_valid_lifetime BIGINT DEFAULT NULL, + ddns_send_updates BOOLEAN DEFAULT NULL, + ddns_override_no_update BOOLEAN DEFAULT NULL, + ddns_override_client_update BOOLEAN DEFAULT NULL, + ddns_replace_client_name INT8 DEFAULT NULL, + ddns_generated_prefix VARCHAR(255) DEFAULT NULL, + ddns_qualifying_suffix VARCHAR(255) DEFAULT NULL, + reservations_global BOOLEAN DEFAULT NULL, + reservations_in_subnet BOOLEAN DEFAULT NULL, + reservations_out_of_pool BOOLEAN DEFAULT NULL, + cache_threshold float DEFAULT NULL, + cache_max_age BIGINT DEFAULT NULL, + CONSTRAINT fk_dhcp6_subnet_shared_network FOREIGN KEY (shared_network_name) + REFERENCES dhcp6_shared_network (name) ON DELETE SET NULL ON UPDATE NO ACTION, + CONSTRAINT fk_ddns_replace_client_name FOREIGN KEY (ddns_replace_client_name) + REFERENCES ddns_replace_client_name_types (type) +); + +CREATE TRIGGER dhcp6_subnet_modification_ts_update + AFTER UPDATE ON dhcp6_server + FOR EACH ROW EXECUTE PROCEDURE modification_ts_update(); + +CREATE INDEX dhcp6_subnet_idx1 ON dhcp6_subnet (modification_ts); +CREATE INDEX dhcp6_subnet_idx2 ON dhcp6_subnet (shared_network_name); + + + +-- Create a table that holds all address pools in IPv6. +CREATE TABLE dhcp6_pool ( + id SERIAL PRIMARY KEY NOT NULL, + start_address inet NOT NULL, + end_address inet NOT NULL, + subnet_id BIGINT NOT NULL, + modification_ts TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP, + client_class VARCHAR(128) DEFAULT NULL, + require_client_classes TEXT DEFAULT NULL, + user_context JSON DEFAULT NULL, + CONSTRAINT fk_dhcp6_pool_subnet_id FOREIGN KEY (subnet_id) REFERENCES dhcp6_subnet (subnet_id) +); +CREATE INDEX dhcp6_pool_idx1 ON dhcp6_pool (modification_ts); +CREATE INDEX dhcp6_pool_idx2 ON dhcp6_pool (subnet_id); + +CREATE TRIGGER dhcp6_pool_modification_ts_update + AFTER UPDATE ON dhcp6_pool + FOR EACH ROW EXECUTE PROCEDURE modification_ts_update(); + + +-- And now the same, but for PD pools. +CREATE TABLE dhcp6_pd_pool ( + id SERIAL PRIMARY KEY NOT NULL, + prefix VARCHAR(45) NOT NULL, + prefix_length SMALLINT NOT NULL, + delegated_prefix_length SMALLINT NOT NULL, + subnet_id BIGINT NOT NULL, + modification_ts TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP, + excluded_prefix VARCHAR(45) DEFAULT NULL, + excluded_prefix_length SMALLINT NOT NULL, + client_class VARCHAR(128) DEFAULT NULL, + require_client_classes TEXT DEFAULT NULL, + user_context JSON DEFAULT NULL, + CONSTRAINT fk_dhcp6_pd_pool_subnet_id FOREIGN KEY (subnet_id) REFERENCES dhcp6_subnet(subnet_id) +); + +CREATE INDEX dhcp6_pd_pool_idx1 ON dhcp6_pd_pool (modification_ts); +CREATE INDEX dhcp6_pd_pool_idx2 ON dhcp6_pd_pool (subnet_id); +CREATE TRIGGER dhcp6_pd_pool_modification_ts_update + AFTER UPDATE ON dhcp6_pd_pool + FOR EACH ROW EXECUTE PROCEDURE modification_ts_update(); + + + +CREATE TABLE dhcp6_subnet_server ( + subnet_id BIGINT NOT NULL, + server_id BIGINT NOT NULL, + modification_ts TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP, + PRIMARY KEY (subnet_id, server_id), + CONSTRAINT fk_dhcp6_subnet_server_server_id + FOREIGN KEY (server_id) REFERENCES dhcp6_server (id) ON DELETE NO ACTION ON UPDATE NO ACTION, + CONSTRAINT fk_dhcp6_subnet_server_subnet_id + FOREIGN KEY (subnet_id) REFERENCES dhcp6_subnet (subnet_id) ON DELETE CASCADE ON UPDATE NO ACTION, + UNIQUE (subnet_id, server_id) +); +CREATE INDEX dhcp6_subnet_server_idx1 ON dhcp6_subnet_server(server_id); +CREATE INDEX dhcp6_subnet_server_idx2 ON dhcp6_subnet_server(modification_ts); +CREATE TRIGGER dhcp6_subnet_server_modification_ts_update + AFTER UPDATE ON dhcp6_subnet_server + FOR EACH ROW EXECUTE PROCEDURE modification_ts_update(); + + + +-- Create table for storing global DHCPv6 parameters. +CREATE TABLE dhcp6_global_parameter ( + id SERIAL PRIMARY KEY NOT NULL, + name VARCHAR(128) NOT NULL, + value TEXT NOT NULL, + modification_ts TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP, + parameter_type SMALLINT NOT NULL, + CONSTRAINT fk_dhcp6_global_parameter_type FOREIGN KEY (parameter_type) REFERENCES parameter_data_type(id) +); + +CREATE INDEX key_dhcp6_global_parameter_idx1 ON dhcp6_global_parameter(modification_ts); +CREATE INDEX key_dhcp6_global_parameter_idx2 ON dhcp6_global_parameter(name); + +CREATE TRIGGER dhcp6_global_parameter_modification_ts_update + AFTER UPDATE ON dhcp6_global_parameter + FOR EACH ROW EXECUTE PROCEDURE modification_ts_update(); + + +CREATE TABLE dhcp6_global_parameter_server ( + parameter_id BIGINT NOT NULL, + server_id BIGINT NOT NULL, + modification_ts TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP, + PRIMARY KEY (parameter_id, server_id), + CONSTRAINT fk_dhcp6_global_parameter_server_parameter_id FOREIGN KEY (parameter_id) + REFERENCES dhcp6_global_parameter(id) ON DELETE CASCADE ON UPDATE NO ACTION, + CONSTRAINT fk_dhcp6_global_parameter_server_server_id FOREIGN KEY (server_id) + REFERENCES dhcp6_server(id) ON DELETE CASCADE ON UPDATE NO ACTION +); +CREATE INDEX key_dhcp6_global_parameter_server_idx1 ON dhcp6_global_parameter_server(modification_ts); +CREATE TRIGGER dhcp6_global_parameter_server_modification_ts_update + AFTER UPDATE ON dhcp6_global_parameter_server + FOR EACH ROW EXECUTE PROCEDURE modification_ts_update(); + + +-- Create a table for storing DHCPv6 options. +ALTER TABLE dhcp6_options + ADD COLUMN shared_network_name VARCHAR(128) DEFAULT NULL, + ADD COLUMN pool_id BIGINT DEFAULT NULL, + ADD COLUMN pd_pool_id BIGINT DEFAULT NULL, + ADD CONSTRAINT fk_dhcp6_options_pd_pool FOREIGN KEY (pd_pool_id) + REFERENCES dhcp6_pd_pool(id) ON DELETE CASCADE ON UPDATE CASCADE, + ADD CONSTRAINT fk_dhcp6_options_pool FOREIGN KEY (pool_id) + REFERENCES dhcp6_pool (id) ON DELETE CASCADE ON UPDATE CASCADE, + ADD CONSTRAINT fk_dhcp6_options_shared_network FOREIGN KEY (shared_network_name) + REFERENCES dhcp6_shared_network (name) ON DELETE CASCADE ON UPDATE CASCADE; + +CREATE TRIGGER dhcp6_options_modification_ts_update + AFTER UPDATE ON dhcp6_options + FOR EACH ROW EXECUTE PROCEDURE modification_ts_update(); + +-- Now create a table for associating defined options with servers. +CREATE TABLE dhcp6_options_server ( + option_id BIGINT NOT NULL, + server_id BIGINT NOT NULL, + modification_ts TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP, + PRIMARY KEY (option_id, server_id), + CONSTRAINT fk_dhcp6_options_server_option_id FOREIGN KEY (option_id) + REFERENCES dhcp6_options (option_id) ON DELETE CASCADE ON UPDATE NO ACTION, + CONSTRAINT fk_dhcp6_options_server_server_id FOREIGN KEY (server_id) + REFERENCES dhcp6_server (id) ON DELETE CASCADE ON UPDATE NO ACTION +); +CREATE INDEX dhcp6_options_server_idx1 ON dhcp6_options_server(server_id); +CREATE INDEX dhcp6_options_server_idx2 ON dhcp6_options_server(modification_ts); +CREATE TRIGGER dhcp6_options_server_modification_ts_update + AFTER UPDATE ON dhcp6_options_server + FOR EACH ROW EXECUTE PROCEDURE modification_ts_update(); + + + +-- This table is for storing IPv6 option definitions +CREATE TABLE dhcp6_option_def ( + id SERIAL PRIMARY KEY UNIQUE NOT NULL, + code SMALLINT NOT NULL, + name VARCHAR(128) NOT NULL, + space VARCHAR(128) NOT NULL, + type SMALLINT NOT NULL, + modification_ts TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP, + is_array BOOLEAN NOT NULL, + encapsulate VARCHAR(128) NOT NULL, + record_types VARCHAR DEFAULT NULL, + user_context JSON DEFAULT NULL +); +CREATE INDEX dhcp6_option_def_idx1 ON dhcp6_option_def(modification_ts); +CREATE INDEX dhcp6_option_def_idx2 ON dhcp6_option_def(code, space); +CREATE TRIGGER dhcp6_option_def_modification_ts_update + AFTER UPDATE ON dhcp6_option_def + FOR EACH ROW EXECUTE PROCEDURE modification_ts_update(); + + +-- and another table for storing relationship between option definitions and servers. +CREATE TABLE dhcp6_option_def_server ( + option_def_id BIGINT NOT NULL REFERENCES dhcp6_option_def (id) ON DELETE CASCADE ON UPDATE NO ACTION, + server_id BIGINT NOT NULL REFERENCES dhcp6_server (id) ON DELETE CASCADE ON UPDATE NO ACTION, + modification_ts TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP, + PRIMARY KEY (option_def_id, server_id) +); +CREATE TRIGGER dhcp6_option_def_server_modification_ts_update + AFTER UPDATE ON dhcp6_option_def_server + FOR EACH ROW EXECUTE PROCEDURE modification_ts_update(); + + +-- Now create two tables for audit revisions... +CREATE TABLE dhcp6_audit_revision ( + id SERIAL PRIMARY KEY NOT NULL, + modification_ts TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP, + log_message TEXT DEFAULT NULL, + server_id BIGINT DEFAULT NULL +); +CREATE TRIGGER dhcp6_audit_revision_modification_ts_update + AFTER UPDATE ON dhcp6_audit_revision + FOR EACH ROW EXECUTE PROCEDURE modification_ts_update(); + + +-- ... and the DHCPv6 audit itself. +CREATE TABLE dhcp6_audit ( + id SERIAL UNIQUE NOT NULL, + object_type VARCHAR(256) NOT NULL, + object_id BIGINT NOT NULL, + modification_type SMALLINT NOT NULL, + revision_id BIGINT NOT NULL, + CONSTRAINT fk_dhcp6_audit_modification_type FOREIGN KEY (modification_type) + REFERENCES modification (id) ON DELETE NO ACTION ON UPDATE NO ACTION, + CONSTRAINT fk_dhcp6_audit_revision FOREIGN KEY (revision_id) + REFERENCES dhcp6_audit_revision (id) ON DELETE NO ACTION ON UPDATE CASCADE +); +CREATE TRIGGER dhcp6_audit_modification_ts_update + AFTER UPDATE ON dhcp6_audit + FOR EACH ROW EXECUTE PROCEDURE modification_ts_update(); +CREATE INDEX dhcp6_audit_idx1 ON dhcp6_audit (modification_type); +CREATE INDEX dhcp6_audit_idx2 ON dhcp6_audit (revision_id); + + +-- Create table for DHCPv4 servers +CREATE TABLE dhcp4_server ( + id SERIAL PRIMARY KEY NOT NULL, + tag VARCHAR(64) NOT NULL, + description TEXT DEFAULT NULL, + modification_ts TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP, + UNIQUE(tag) +); +CREATE INDEX dhcp4_server_modification_ts ON dhcp6_server (modification_ts); +CREATE TRIGGER dhcp4_server_modification_ts_update + AFTER UPDATE ON dhcp4_server + FOR EACH ROW EXECUTE PROCEDURE modification_ts_update(); + +INSERT INTO dhcp4_server (tag, description) VALUES ('all','special type: all servers'); + +-- Create table for storing global DHCPv4 parameters. +CREATE TABLE dhcp4_global_parameter ( + id SERIAL PRIMARY KEY NOT NULL, + name VARCHAR(128) NOT NULL, + value TEXT NOT NULL, + modification_ts TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP, + parameter_type SMALLINT NOT NULL, + CONSTRAINT fk_dhcp6_global_parameter_type FOREIGN KEY (parameter_type) REFERENCES parameter_data_type(id) +); +CREATE INDEX dhcp4_global_parameter_idx1 ON dhcp4_global_parameter(modification_ts); +CREATE INDEX dhcp4_global_parameter_idx2 ON dhcp4_global_parameter(name); + +CREATE TRIGGER dhcp4_global_parameter_modification_ts_update + AFTER UPDATE ON dhcp4_global_parameter + FOR EACH ROW EXECUTE PROCEDURE modification_ts_update(); + +-- and create mapping for the global DHCPv4 parameters mapping to servers +CREATE TABLE dhcp4_global_parameter_server ( + parameter_id BIGINT NOT NULL, + server_id BIGINT NOT NULL, + modification_ts TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP, + PRIMARY KEY (parameter_id, server_id), + CONSTRAINT fk_dhcp4_global_parameter_server_parameter_id FOREIGN KEY (parameter_id) + REFERENCES dhcp4_global_parameter(id) ON DELETE CASCADE ON UPDATE NO ACTION, + CONSTRAINT fk_dhcp4_global_parameter_server_server_id FOREIGN KEY (server_id) + REFERENCES dhcp4_server(id) ON DELETE CASCADE ON UPDATE NO ACTION +); +CREATE INDEX key_dhcp4_global_parameter_idx1 ON dhcp4_global_parameter_server(modification_ts); +CREATE TRIGGER dhcp4_global_parameter_server_modification_ts_update + AFTER UPDATE ON dhcp4_global_parameter_server + FOR EACH ROW EXECUTE PROCEDURE modification_ts_update(); + + +-- Create a table for storing IPv4 shared networks +CREATE TABLE dhcp4_shared_network ( + id SERIAL PRIMARY KEY NOT NULL, + name VARCHAR(128) UNIQUE NOT NULL, + client_class VARCHAR(128) DEFAULT NULL, + interface VARCHAR(128) DEFAULT NULL, + match_client_id BOOLEAN DEFAULT NULL, + modification_ts TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP, + rebind_timer BIGINT DEFAULT NULL, + relay TEXT DEFAULT NULL, + renew_timer BIGINT DEFAULT NULL, + require_client_classes TEXT DEFAULT NULL, + user_context JSON DEFAULT NULL, + valid_lifetime BIGINT DEFAULT NULL, + authoritative BOOLEAN DEFAULT NULL, + calculate_tee_times BOOLEAN DEFAULT NULL, + t1_percent float DEFAULT NULL, + t2_percent float DEFAULT NULL, + boot_file_name VARCHAR(128) DEFAULT NULL, + next_server inet DEFAULT NULL, -- let's use type inet + server_hostname VARCHAR(64) DEFAULT NULL, + min_valid_lifetime BIGINT DEFAULT NULL, + max_valid_lifetime BIGINT DEFAULT NULL, + ddns_send_updates BOOLEAN DEFAULT NULL, + ddns_override_no_update BOOLEAN DEFAULT NULL, + ddns_override_client_update BOOLEAN DEFAULT NULL, + ddns_replace_client_name INT8 DEFAULT NULL, + ddns_generated_prefix VARCHAR(255) DEFAULT NULL, + ddns_qualifying_suffix VARCHAR(255) DEFAULT NULL, + reservations_global BOOLEAN DEFAULT NULL, + reservations_in_subnet BOOLEAN DEFAULT NULL, + reservations_out_of_pool BOOLEAN DEFAULT NULL, + cache_threshold float DEFAULT NULL, + cache_max_age BIGINT DEFAULT NULL, + CONSTRAINT fk_ddns_replace_client_name FOREIGN KEY (ddns_replace_client_name) + REFERENCES ddns_replace_client_name_types (type) +); + +CREATE UNIQUE INDEX dhcp4_shared_network_idx1 ON dhcp4_shared_network (name); +CREATE INDEX dhcp4_shared_network_idx2 ON dhcp4_shared_network (modification_ts); + +CREATE TRIGGER dhcp4_shared_network_modification_ts_update + AFTER UPDATE ON dhcp4_shared_network + FOR EACH ROW EXECUTE PROCEDURE modification_ts_update(); + + + +-- Now we need to create a relationship between defined shared networks and the servers +CREATE TABLE dhcp4_shared_network_server ( + shared_network_id BIGINT NOT NULL, + server_id BIGINT NOT NULL, + modification_ts TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP, + PRIMARY KEY (shared_network_id, server_id), + CONSTRAINT fk_dhcp4_shared_network_server_server_id FOREIGN KEY (server_id) + REFERENCES dhcp4_server (id) ON DELETE CASCADE ON UPDATE NO ACTION, + CONSTRAINT fk_dhcp4_shared_network_server_shared_network_id FOREIGN KEY (shared_network_id) + REFERENCES dhcp4_shared_network (id) ON DELETE CASCADE ON UPDATE NO ACTION +); +CREATE INDEX dhcp4_shared_network_server_idx1 ON dhcp4_shared_network_server (modification_ts); +CREATE INDEX dhcp4_shared_network_server_idx2 ON dhcp4_shared_network_server (server_id); + + + +-- Create a list of IPv4 subnets +CREATE TABLE dhcp4_subnet ( + subnet_id BIGINT PRIMARY KEY NOT NULL, + subnet_prefix VARCHAR(64) UNIQUE NOT NULL, + interface_4o6 VARCHAR(128) DEFAULT NULL, + interface_id_4o6 VARCHAR(128) DEFAULT NULL, + subnet_4o6 VARCHAR(64) DEFAULT NULL, + boot_file_name VARCHAR(128) DEFAULT NULL, + client_class VARCHAR(128) DEFAULT NULL, + interface VARCHAR(128) DEFAULT NULL, + match_client_id BOOLEAN DEFAULT NULL, + modification_ts TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP, + next_server inet DEFAULT NULL, + rebind_timer BIGINT DEFAULT NULL, + relay TEXT DEFAULT NULL, + renew_timer BIGINT DEFAULT NULL, + require_client_classes TEXT DEFAULT NULL, + server_hostname VARCHAR(64) DEFAULT NULL, + shared_network_name VARCHAR(128) DEFAULT NULL, + user_context JSON DEFAULT NULL, + valid_lifetime BIGINT DEFAULT NULL, + authoritative BOOLEAN DEFAULT NULL, + calculate_tee_times BOOLEAN DEFAULT NULL, + t1_percent float DEFAULT NULL, + t2_percent float DEFAULT NULL, + min_valid_lifetime BIGINT DEFAULT NULL, + max_valid_lifetime BIGINT DEFAULT NULL, + ddns_send_updates BOOLEAN DEFAULT NULL, + ddns_override_no_update BOOLEAN DEFAULT NULL, + ddns_override_client_update BOOLEAN DEFAULT NULL, + ddns_replace_client_name INT8 DEFAULT NULL, + ddns_generated_prefix VARCHAR(255) DEFAULT NULL, + ddns_qualifying_suffix VARCHAR(255) DEFAULT NULL, + reservations_global BOOLEAN DEFAULT NULL, + reservations_in_subnet BOOLEAN DEFAULT NULL, + reservations_out_of_pool BOOLEAN DEFAULT NULL, + cache_threshold float DEFAULT NULL, + cache_max_age BIGINT DEFAULT NULL, + CONSTRAINT fk_dhcp4_subnet_shared_network FOREIGN KEY (shared_network_name) + REFERENCES dhcp4_shared_network (name) ON DELETE SET NULL ON UPDATE NO ACTION, + CONSTRAINT fk_ddns_replace_client_name FOREIGN KEY (ddns_replace_client_name) + REFERENCES ddns_replace_client_name_types (type) +); + +CREATE TRIGGER dhcp4_subnet_modification_ts_update + AFTER UPDATE ON dhcp4_subnet + FOR EACH ROW EXECUTE PROCEDURE modification_ts_update(); + +CREATE INDEX dhcp4_subnet_idx1 ON dhcp4_subnet (modification_ts); +CREATE INDEX dhcp4_subnet_idx2 ON dhcp4_subnet (shared_network_name); + + + +CREATE TABLE dhcp4_subnet_server ( + subnet_id BIGINT NOT NULL, + server_id BIGINT NOT NULL, + modification_ts TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP, + PRIMARY KEY (subnet_id, server_id), + CONSTRAINT fk_dhcp6_subnet_server_server_id + FOREIGN KEY (server_id) REFERENCES dhcp6_server (id) ON DELETE NO ACTION ON UPDATE NO ACTION, + CONSTRAINT fk_dhcp6_subnet_server_subnet_id + FOREIGN KEY (subnet_id) REFERENCES dhcp6_subnet (subnet_id) ON DELETE CASCADE ON UPDATE NO ACTION, + UNIQUE (subnet_id, server_id) +); +CREATE INDEX dhcp4_subnet_server_idx1 ON dhcp4_subnet_server(server_id); +CREATE INDEX dhcp4_subnet_server_idx2 ON dhcp4_subnet_server(modification_ts); +CREATE TRIGGER dhcp4_subnet_server_modification_ts_update + AFTER UPDATE ON dhcp4_subnet_server + FOR EACH ROW EXECUTE PROCEDURE modification_ts_update(); + + + +-- Create a table that holds all address pools in IPv4. +CREATE TABLE dhcp4_pool ( + id SERIAL PRIMARY KEY NOT NULL, + start_address inet NOT NULL, + end_address inet NOT NULL, + subnet_id BIGINT NOT NULL, + modification_ts TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP, + client_class VARCHAR(128) DEFAULT NULL, + require_client_classes TEXT DEFAULT NULL, + user_context JSON DEFAULT NULL, + CONSTRAINT fk_dhcp4_pool_subnet_id FOREIGN KEY (subnet_id) REFERENCES dhcp4_subnet (subnet_id) +); +CREATE INDEX dhcp4_pool_idx1 ON dhcp4_pool (modification_ts); +CREATE INDEX dhcp4_pool_idx2 ON dhcp4_pool (subnet_id); + +CREATE TRIGGER dhcp4_pool_modification_ts_update + AFTER UPDATE ON dhcp4_pool + FOR EACH ROW EXECUTE PROCEDURE modification_ts_update(); + + +-- Create a table for storing DHCPv4 options. +ALTER TABLE dhcp4_options + ADD COLUMN shared_network_name VARCHAR(128) DEFAULT NULL, + ADD COLUMN pool_id BIGINT DEFAULT NULL, + ADD COLUMN modification_ts TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP, + ADD CONSTRAINT fk_dhcp4_options_pool FOREIGN KEY (pool_id) + REFERENCES dhcp4_pool (id) ON DELETE CASCADE ON UPDATE CASCADE, + ADD CONSTRAINT fk_dhcp4_options_shared_network FOREIGN KEY (shared_network_name) + REFERENCES dhcp4_shared_network (name) ON DELETE CASCADE ON UPDATE CASCADE; + +CREATE TRIGGER dhcp4_options_modification_ts_update + AFTER UPDATE ON dhcp4_options + FOR EACH ROW EXECUTE PROCEDURE modification_ts_update(); + + + +-- Now create a table for associating defined v4 options with servers. +CREATE TABLE dhcp4_options_server ( + option_id BIGINT NOT NULL, + server_id BIGINT NOT NULL, + modification_ts TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP, + PRIMARY KEY (option_id, server_id), + CONSTRAINT fk_dhcp4_options_server_option_id FOREIGN KEY (option_id) + REFERENCES dhcp4_options (option_id) ON DELETE CASCADE ON UPDATE NO ACTION, + CONSTRAINT fk_dhcp4_options_server_server_id FOREIGN KEY (server_id) + REFERENCES dhcp4_server (id) ON DELETE CASCADE ON UPDATE NO ACTION +); +CREATE INDEX dhcp4_options_server_idx1 ON dhcp4_options_server(server_id); +CREATE INDEX dhcp4_options_server_idx2 ON dhcp4_options_server(modification_ts); +CREATE TRIGGER dhcp4_options_server_modification_ts_update + AFTER UPDATE ON dhcp4_options_server + FOR EACH ROW EXECUTE PROCEDURE modification_ts_update(); + + + +-- This table is for storing IPv4 option definitions +CREATE TABLE dhcp4_option_def ( + id SERIAL PRIMARY KEY UNIQUE NOT NULL, + code SMALLINT NOT NULL, + name VARCHAR(128) NOT NULL, + space VARCHAR(128) NOT NULL, + type SMALLINT NOT NULL, + modification_ts TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP, + is_array BOOLEAN NOT NULL, + encapsulate VARCHAR(128) NOT NULL, + record_types VARCHAR DEFAULT NULL, + user_context JSON DEFAULT NULL +); +CREATE INDEX dhcp4_option_def_idx1 ON dhcp4_option_def(modification_ts); +CREATE INDEX dhcp4_option_def_idx2 ON dhcp4_option_def(code, space); +CREATE TRIGGER dhcp4_option_def_modification_ts_update + AFTER UPDATE ON dhcp4_option_def + FOR EACH ROW EXECUTE PROCEDURE modification_ts_update(); + + +-- and another table for storing relationship between option definitions and servers. +CREATE TABLE dhcp4_option_def_server ( + option_def_id BIGINT NOT NULL REFERENCES dhcp6_option_def (id) ON DELETE CASCADE ON UPDATE NO ACTION, + server_id BIGINT NOT NULL REFERENCES dhcp4_server (id) ON DELETE CASCADE ON UPDATE NO ACTION, + modification_ts TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP, + PRIMARY KEY (option_def_id, server_id) +); +CREATE TRIGGER dhcp4_option_def_server_modification_ts_update + AFTER UPDATE ON dhcp4_option_def_server + FOR EACH ROW EXECUTE PROCEDURE modification_ts_update(); + + + +-- Now create two tables for audit revisions... +CREATE TABLE dhcp4_audit_revision ( + id SERIAL PRIMARY KEY NOT NULL, + modification_ts TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP, + log_message TEXT DEFAULT NULL, + server_id BIGINT DEFAULT NULL +); +CREATE TRIGGER dhcp4_audit_revision_modification_ts_update + AFTER UPDATE ON dhcp4_audit_revision + FOR EACH ROW EXECUTE PROCEDURE modification_ts_update(); + + +-- ... and the DHCPv4 audit itself. +CREATE TABLE dhcp4_audit ( + id SERIAL UNIQUE NOT NULL, + object_type VARCHAR(256) NOT NULL, + object_id BIGINT NOT NULL, + modification_type SMALLINT NOT NULL, + revision_id BIGINT NOT NULL, + CONSTRAINT fk_dhcp4_audit_modification_type FOREIGN KEY (modification_type) + REFERENCES modification (id) ON DELETE NO ACTION ON UPDATE NO ACTION, + CONSTRAINT fk_dhcp4_audit_revision FOREIGN KEY (revision_id) + REFERENCES dhcp4_audit_revision (id) ON DELETE NO ACTION ON UPDATE CASCADE +); +CREATE TRIGGER dhcp4_audit_modification_ts_update + AFTER UPDATE ON dhcp4_audit + FOR EACH ROW EXECUTE PROCEDURE modification_ts_update(); +CREATE INDEX dhcp4_audit_idx1 ON dhcp4_audit (modification_type); +CREATE INDEX dhcp4_audit_idx2 ON dhcp4_audit (revision_id); + +-- Stores a TEXT value to a session variable +-- name name of session variable to set +-- value TEXT value to store +CREATE OR REPLACE FUNCTION set_session_value(name text, value TEXT) +RETURNS VOID +AS \$\$ +DECLARE +BEGIN + PERFORM set_config(name, value, false); + RETURN; + + EXCEPTION + WHEN OTHERS THEN + RAISE EXCEPTION 'set_session_value(%) : value:[%] failed, sqlstate: %', name, value, sqlstate; +END;\$\$ +LANGUAGE plpgsql; + +-- Stores a BIGINT value to a session variable +-- Note the value converted to TEXT and then stored as Postgresql does +-- not support any other data type in session variables. +-- name name of session variable to set +-- value BIGINT value to store +CREATE OR REPLACE FUNCTION set_session_value(name text, value BIGINT) +RETURNS VOID +AS \$\$ +BEGIN + PERFORM set_config(name, cast(value as text), false); + RETURN; + + EXCEPTION + WHEN OTHERS THEN + RAISE EXCEPTION 'set_session_value(%) : value:[%] failed, sqlstate: %', name, value, sqlstate; +END;\$\$ +LANGUAGE plpgsql; + +-- Stores a BOOLEAN value to a session variable +-- Note the value converted to TEXT and then stored as Postgresql does +-- not support any other data type in session variables. +-- name name of session variable to set +-- value BOOLEAN value to store +CREATE OR REPLACE FUNCTION set_session_value(name text, value BOOLEAN) +RETURNS VOID +AS \$\$ +BEGIN + PERFORM set_config(name, cast(value as text), false); + RETURN; + + EXCEPTION + WHEN OTHERS THEN + RAISE EXCEPTION 'set_session_value(%) : value:[%] failed, sqlstate: %', name, value, sqlstate; +END;\$\$ +LANGUAGE plpgsql; + + +-- Fetches a text value from the session configuration. +-- param name name of the session variable to fetch +-- If the name is not found it returns NULL. +-- Postgresql allows you to store custom session values +-- but throws an exception if they have not first been +-- set. This allows us to be a bit more graceful. +CREATE OR REPLACE FUNCTION get_session_value(name TEXT) +RETURNS TEXT +AS \$\$ +DECLARE + text_value TEXT := ''; +BEGIN + text_value = current_setting(name); + RETURN(text_value); + + EXCEPTION + WHEN undefined_object THEN + -- Variable has not been initialized so return NULL + RETURN NULL; + WHEN OTHERS THEN + RAISE EXCEPTION 'get_session_value(%, TEXT) failed, sqlstate: %', name, sqlstate; +END;\$\$ +LANGUAGE plpgsql; + +-- Fetches an BIGINT value from the session configuration. +-- param name name of the session variable to fetch +-- If the name is not found it returns zero. +CREATE OR REPLACE FUNCTION get_session_big_int(name text) +RETURNS BIGINT +AS \$\$ +DECLARE + int_value BIGINT := 0; + text_value TEXT := ''; +BEGIN + text_value = get_session_value(name); + IF text_value is NULL or text_value = '' THEN + RETURN(0); + END IF; + + int_value = cast(text_value as BIGINT); + RETURN(int_value); + + EXCEPTION + WHEN OTHERS THEN + RAISE EXCEPTION 'get_session_big_int(%) failed - text:[%] , sqlstate: %', name, text_value, sqlstate; + +END;\$\$ +LANGUAGE plpgsql; + +-- Fetches an BOOLEAN value from the session configuration. +-- param name name of the session variable to fetch +-- If the name is not found it returns zero. +CREATE OR REPLACE FUNCTION get_session_boolean(name text) +RETURNS BOOLEAN +AS \$\$ +DECLARE + bool_value BOOLEAN := false; + text_value TEXT := ''; +BEGIN + text_value = get_session_value(name); + IF text_value is NULL or text_value = '' THEN + RETURN(false); + END IF; + + bool_value = cast(text_value as BOOLEAN); + RETURN(bool_value); + + EXCEPTION + WHEN OTHERS THEN + RAISE EXCEPTION 'get_session_boolean(%) failed - text:[%] , sqlstate: %', name, text_value, sqlstate; + +END;\$\$ +LANGUAGE plpgsql; + + +-- ----------------------------------------------------- +-- Stored procedure which creates a new entry in the +-- dhcp4_audit_revision table and sets appropriate session +-- variables to be used while creating the audit entries +-- by triggers. This procedure should be called at the +-- beginning of a transaction which modifies configuration +-- data in the database, e.g. when new subnet is added. +-- +-- Parameters: +-- - audit_ts timestamp to be associated with the audit +-- revision. +-- - server_tag is used to retrieve the server_id which +-- associates the changes applied with the particular +-- server or all servers. +-- - audit_log_message is a log message associates with +-- the audit revision. +-- - cascade_transaction is assigned to a session +-- variable which is used in some triggers to determine +-- if the audit entry should be created for them or +-- not. Specifically, this is used when DHCP options +-- are inserted, updated or deleted. If such modification +-- is a part of the larger change (e.g. change in the +-- subnet the options belong to) the dedicated audit +-- entry for options must not be created. On the other +-- hand, if the global option is being added, the +-- audit entry for the option must be created because +-- it is the sole object modified in that case. +-- Session variable disable_audit is used to disable +-- the procedure when wiping the database during +-- unit tests. This avoids issues with revision_id +-- being null. +-- ----------------------------------------------------- +CREATE OR REPLACE FUNCTION createAuditRevisionDHCP4(audit_ts TIMESTAMP WITH TIME ZONE, + server_tag VARCHAR(64), + audit_log_message TEXT, + cascade_transaction BOOLEAN) +RETURNS VOID +LANGUAGE plpgsql +AS \$\$ +DECLARE + disable_audit BOOLEAN := false; + audit_revision_id BIGINT; + srv_id BIGINT; +BEGIN + -- Fetch session value for disable_audit. + disable_audit := get_session_boolean('kea.disable_audit'); + IF disable_audit = false THEN + SELECT id INTO srv_id FROM dhcp4_server WHERE tag = server_tag; + INSERT INTO dhcp4_audit_revision (modification_ts, server_id, log_message) + VALUES (audit_ts, srv_id, audit_log_message) returning id INTO audit_revision_id; + + -- Update pertinent session variables. + PERFORM set_session_value('kea.audit_revision_id', audit_revision_id); + PERFORM set_session_value('kea.cascade_transaction', cascade_transaction); + END IF; + RETURN; +END;\$\$; + +-- ----------------------------------------------------- +-- Stored procedure which creates a new entry in the +-- dhcp4_audit table. It should be called from the +-- triggers of the tables where the config modifications +-- are applied. The audit_revision_id variable contains +-- the revision id to be placed in the audit entries. +-- +-- The following parameters are passed to this procedure: +-- - object_type_val: name of the table to be associated +-- with the applied changes. +-- - object_id_val: identifier of the modified object in +-- that table. +-- - modification_type_val: string value indicating the +-- type of the change, i.e. 'create', 'update' or +-- 'delete'. +-- Session variable disable_audit is used to disable +-- the procedure when wiping the database during +-- unit tests. This avoids issues with revision_id +-- being null. +-- ---------------------------------------------------- +CREATE OR REPLACE FUNCTION createAuditEntryDHCP4(object_type_val VARCHAR(256), + object_id_val BIGINT, + modification_type_val VARCHAR(32)) +RETURNS VOID +LANGUAGE plpgsql +as \$\$ +DECLARE + audit_revision_id BIGINT; + disable_audit BOOLEAN := false; +BEGIN + -- Fetch session value for disable_audit. + disable_audit := get_session_boolean('kea.disable_audit'); + + IF disable_audit IS NULL OR disable_audit = false THEN + -- Fetch session value most recently created audit_revision_id. + audit_revision_id := get_session_big_int('kea.audit_revision_id'); + INSERT INTO dhcp4_audit (object_type, object_id, modification_type, revision_id) + VALUES (object_type_val, object_id_val, + (SELECT id FROM modification WHERE modification_type = modification_type_val), + audit_revision_id); + END IF; + RETURN; +END;\$\$; + +-- ----------------------------------------------------------------------- +-- Create a table holding the DHCPv4 client classes. Most table +-- columns map directly to respective client class properties in +-- Kea configuration. The depend_on_known_directly column is +-- explicitly set in an insert or update statement to indicate +-- if the client class directly depends on KNOWN or UNKNOWN +-- built-in classes. A caller should determine it by evaluating +-- a test expression before inserting or updating the client +-- class in the database. The nullable follow_class_name column +-- can be used for positioning the inserted or updated client +-- class within the class hierarchy. Set this column value to +-- an existing class name, after which this class should be +-- placed in the class hierarchy. See dhcp4_client_class_order +-- description for the details of how classes are ordered. +-- ----------------------------------------------------------------------- +CREATE TABLE IF NOT EXISTS dhcp4_client_class ( + id SERIAL PRIMARY KEY NOT NULL, + name VARCHAR(128) UNIQUE NOT NULL, + test TEXT, + next_server INET DEFAULT NULL, + server_hostname VARCHAR(128) DEFAULT NULL, + boot_file_name VARCHAR(512) DEFAULT NULL, + only_if_required BOOLEAN NOT NULL DEFAULT false, + valid_lifetime BIGINT DEFAULT NULL, + min_valid_lifetime BIGINT DEFAULT NULL, + max_valid_lifetime BIGINT DEFAULT NULL, + depend_on_known_directly BOOLEAN NOT NULL DEFAULT false, + follow_class_name VARCHAR(128) DEFAULT NULL, + modification_ts TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP +); + +CREATE INDEX key_dhcp4_client_class_modification_ts on dhcp4_client_class (modification_ts); + +-- ----------------------------------------------------------------------- +-- Create a table for ordering client classes and holding information +-- about indirect dependencies on KNOWN/UKNOWN built-in client classes. +-- Each class in the dhcp4_client_class table has a corresponding row +-- in the dhcp4_client_class_order table. A caller should not modify +-- the contents of this table. Its entries are automatically created +-- upon inserting or updating client classes in the dhcp4_client_classes +-- using triggers. The order_index designates the position of the client +-- class within the class hierarchy. If the follow_class_name value of +-- the dhcp4_client_class table is set to NULL, the client class is +-- appended at the end of the hierarchy. The assigned order_index +-- value for that class is set to a maximum current value + 1. +-- If the follow_client_class specifies a name of an existing class, +-- the generated order_index is set to an id of that class + 1, and +-- the order_index values of the later classes are incremented by 1. +-- The depend_on_known_indirectly column holds a boolean value indicating +-- whether the given class depends on KNOWN/UKNOWN built-in classes +-- via other classes, i.e. it depends on classes that directly or +-- indirectly depend on these built-ins. This value is auto-generated +-- by a trigger on the dhcp4_client_class_dependency table. +-- ----------------------------------------------------------------------- +CREATE TABLE IF NOT EXISTS dhcp4_client_class_order ( + class_id BIGINT PRIMARY KEY NOT NULL, + order_index BIGINT NOT NULL, + depend_on_known_indirectly BOOLEAN NOT NULL DEFAULT false, + CONSTRAINT fk_dhcp4_client_class_order_class_id FOREIGN KEY (class_id) + REFERENCES dhcp4_client_class (id) ON DELETE CASCADE +); + +CREATE INDEX key_dhcp4_client_class_order_index on dhcp4_client_class_order (order_index); + + +-- ----------------------------------------------------------------------- +-- Stored procedure positioning an inserted or updated client class +-- within the class hierarchy, depending on the value of the +-- follow_class_name parameter. +-- +-- Parameters: +-- - id id of the positioned class, +-- - follow_class_name name of the class after which this class should be +-- positioned within the class hierarchy. +-- - old_follow_class_name previous name of the class after which this +-- class was positioned within the class hierarchy. +-- ----------------------------------------------------------------------- +CREATE OR REPLACE FUNCTION setClientClass4Order(id BIGINT, + new_follow_class_name VARCHAR(128), + old_follow_class_name VARCHAR(128)) +RETURNS VOID +LANGUAGE plpgsql +AS \$\$ +DECLARE + -- Used to fetch class's current value for depend_on_known_indirectly + l_depend_on_known_indirectly BIGINT := 0; + + -- Optionally set if the follow_class_name column value is specified. + follow_class_index BIGINT; +BEGIN + -- Fetch the class's current value of depend_on_known_indirectly. + SELECT depend_on_known_indirectly INTO l_depend_on_known_indirectly + FROM dhcp4_client_class_order WHERE id = class_id; + + -- Save it to the current session for use elsewhere during this transaction. + -- Note this does not work prior to Postgres 9.2 unless the variables are + -- defined in postgresql.conf. I think for now we put up with CB not supported + -- prior to 9.2 or we tell people how to edit the conf file. + PERFORM set_session_value('kea.depend_on_known_indirectly', l_depend_on_known_indirectly); + + -- Bail if the class is updated without re-positioning. + IF( + l_depend_on_known_indirectly IS NOT NULL AND + ((new_follow_class_name IS NULL AND old_follow_class_name IS NULL) OR + (new_follow_class_name = old_follow_class_name)) + ) THEN + -- The depend_on_known_indirectly is set to 0 because this procedure is invoked + -- whenever the dhcp4_client_class record is updated. Such update may include + -- test expression changes impacting the dependency on KNOWN/UNKNOWN classes. + -- This value will be later adjusted when dependencies are inserted. + -- TKM should we update the session value also or is it moot? + UPDATE dhcp4_client_class_order SET depend_on_known_indirectly = false + WHERE class_id = id; + RETURN; + END IF; + + IF new_follow_class_name IS NOT NULL THEN + -- Get the position of the class after which the new class should be added. + SELECT o.order_index INTO follow_class_index + FROM dhcp4_client_class AS c + INNER JOIN dhcp4_client_class_order AS o + ON c.id = o.class_id + WHERE c.name = new_follow_class_name; + + IF follow_class_index IS NULL THEN + -- The class with a name specified with new_follow_class_name does + -- not exist. + RAISE EXCEPTION 'Class %s does not exist.', new_follow_class_name + USING ERRCODE = 'sql_routine_exception'; + END IF; + + -- We need to place the new class at the position of follow_class_index + 1. + -- There may be a class at this position already. + IF EXISTS(SELECT * FROM dhcp4_client_class_order WHERE order_index = follow_class_index + 1) THEN + -- There is a class at this position already. Let's move all classes + -- starting from this position by one to create a spot for the new + -- class. + UPDATE dhcp4_client_class_order + SET order_index = order_index + 1 + WHERE order_index >= follow_class_index + 1; + -- TKM postgresql doesn't like order by here, does it matter? + -- ORDER BY order_index DESC; + END IF; + + ELSE + -- A caller did not specify the new_follow_class_name value. Let's append the + -- new class at the end of the hierarchy. + SELECT MAX(order_index) INTO follow_class_index FROM dhcp4_client_class_order; + IF follow_class_index IS NULL THEN + -- Apparently, there are no classes. Let's start from 0. + follow_class_index = 0; + END IF; + END IF; + + -- Check if moving the class doesn't break dependent classes. + IF EXISTS( + SELECT 1 FROM dhcp4_client_class_dependency AS d + INNER JOIN dhcp4_client_class_order AS o + ON d.class_id = o.class_id + WHERE d.dependency_id = id AND o.order_index < follow_class_index + 1 + LIMIT 1 + ) THEN + RAISE EXCEPTION 'Unable to move class with id %s because it would break its dependencies', id + USING ERRCODE = 'sql_routine_exception'; + END IF; + + -- The depend_on_known_indirectly is set to 0 because this procedure is invoked + -- whenever the dhcp4_client_class record is updated. Such update may include + -- test expression changes impacting the dependency on KNOWN/UNKNOWN classes. + -- This value will be later adjusted when dependencies are inserted. + -- ON CONFLICT required 9.5 or later + UPDATE dhcp4_client_class_order + SET order_index = follow_class_index + 1, + depend_on_known_indirectly = l_depend_on_known_indirectly + WHERE class_id = id; + IF FOUND THEN + RETURN; + END IF; + + INSERT INTO dhcp4_client_class_order(class_id, order_index, depend_on_known_indirectly) + VALUES (id, follow_class_index + 1, 0); + RETURN; +END;\$\$; + +-- ----------------------------------------------------------------------- +-- Trigger procedure to position an inserted class within the class hierarchy +-- and create audit. +-- ----------------------------------------------------------------------- +CREATE OR REPLACE FUNCTION func_dhcp4_client_class_AINS() RETURNS trigger AS \$dhcp4_client_class_AINS\$ +BEGIN + PERFORM setClientClass4Order(NEW.id, NEW.follow_class_name, NULL); + PERFORM createAuditEntryDHCP4('dhcp4_client_class', NEW.id, 'create'); + RETURN NULL; +END; +\$dhcp4_client_class_AINS\$ +LANGUAGE plpgsql; + +-- Create dhcp4_client_class insert trigger +CREATE TRIGGER dhcp4_client_class_AINS + AFTER INSERT ON dhcp4_client_class + FOR EACH ROW EXECUTE PROCEDURE func_dhcp4_client_class_AINS(); + +-- ----------------------------------------------------------------------- +-- Trigger to position an updated class within the class hierarchy, +-- create audit and remember the direct dependency on the +-- KNOWN/UNKNOWN built-in classes before the class update. +-- When updating a client class, it is very important to ensure that +-- its dependency on KNOWN or UNKNOWN built-in client classes is not +-- changed. It is because there may be other classes that depend on +-- these built-ins via this class. Changing the dependency would break +-- the chain of dependencies for other classes. Here, we store the +-- information about the dependency in the session variables. Their +-- values will be compared with the new dependencies after an update. +-- If they change, an error will be signaled. +-- ----------------------------------------------------------------------- +CREATE OR REPLACE FUNCTION func_dhcp4_client_class_AUPD() RETURNS trigger AS \$dhcp4_client_class_AUPD\$ +BEGIN + PERFORM set_session_value('kea.depend_on_known_directly', OLD.depend_on_known_directly); + PERFORM set_session_value('kea.client_class_id', NEW.id); + PERFORM setClientClass4Order(NEW.id, NEW.follow_class_name, OLD.follow_class_name); + PERFORM createAuditEntryDHCP4('dhcp4_client_class', NEW.id, 'update'); + RETURN NULL; +END; +\$dhcp4_client_class_AUPD\$ +LANGUAGE plpgsql; + +-- Create dhcp4_client_class update insert trigger +CREATE TRIGGER dhcp4_client_class_AUPD + AFTER UPDATE ON dhcp4_client_class + FOR EACH ROW EXECUTE PROCEDURE func_dhcp4_client_class_AUPD(); + +-- ----------------------------------------------------------------------- +-- Trigger procedure to create the audit entry for client class delete. +-- ----------------------------------------------------------------------- +CREATE OR REPLACE FUNCTION func_dhcp4_client_class_ADEL() RETURNS trigger AS \$dhcp4_client_class_ADEL\$ +BEGIN + PERFORM createAuditEntryDHCP4('dhcp4_client_class', OLD.id, 'delete'); + RETURN NULL; +END; +\$dhcp4_client_class_ADEL\$ +LANGUAGE plpgsql; + +-- Create dhcp4_client_class delete trigger +CREATE TRIGGER dhcp4_client_class_ADEL + AFTER DELETE ON dhcp4_client_class + FOR EACH ROW EXECUTE PROCEDURE func_dhcp4_client_class_ADEL(); + +-- ----------------------------------------------------------------------- +-- Create a table associating client classes stored in the +-- dhcp4_client_class table with their dependencies. There is +-- an M:N relationship between these tables. Each class may have +-- many dependencies (created using member operator in test expression), +-- and each class may be a dependency for many other classes. A caller +-- is responsible for inserting dependencies for a class after inserting +-- or updating it in the dhcp4_client_class table. A caller should +-- delete all existing dependencies for an updated client class, evaluate +-- test expression to discover new dependencies (in case test expression +-- has changed), and insert new dependencies to this table. +-- ----------------------------------------------------------------------- +CREATE TABLE IF NOT EXISTS dhcp4_client_class_dependency ( + class_id BIGINT PRIMARY KEY NOT NULL, + dependency_id BIGINT NOT NULL, + + CONSTRAINT dhcp4_client_class_class_id FOREIGN KEY (class_id) + REFERENCES dhcp4_client_class (id) ON DELETE CASCADE, + CONSTRAINT dhcp4_client_class_dependency_id FOREIGN KEY (dependency_id) + REFERENCES dhcp4_client_class (id) +); + +CREATE INDEX dhcp4_client_class_dependency_id_idx on dhcp4_client_class_dependency (dependency_id); + +-- ----------------------------------------------------------------------- +-- Stored procedure verifying if class dependency is met. It includes +-- checking if referenced classes exist, are associated with the same +-- server or all servers, and are defined before the class specified with +-- class_id. +-- +-- Parameters: +-- - p_class_id id client class, +-- - p_dependency_id id of the dependency. +-- ----------------------------------------------------------------------- +CREATE OR REPLACE FUNCTION checkDHCPv4ClientClassDependency(p_class_id BIGINT, + p_dependency_id BIGINT) +RETURNS VOID +LANGUAGE plpgsql +AS \$\$ +DECLARE + class_index BIGINT; + dependency_index BIGINT; +BEGIN + -- We could check the same with a constraint but later in this + -- trigger we use this value to verify if the dependencies are + -- met. + IF p_class_id IS NULL THEN + RAISE EXCEPTION 'Client class id must not be NULL.' + USING ERRCODE = 'sql_routine_exception'; + END IF; + + IF p_dependency_id IS NULL THEN + RAISE EXCEPTION 'Class dependency id must not be NULL.' + USING ERRCODE = 'sql_routine_exception'; + END IF; + + -- Dependencies on self make no sense. + IF p_class_id = p_dependency_id THEN + RAISE EXCEPTION 'Client class must not have dependency on self.' + USING ERRCODE = 'sql_routine_exception'; + END IF; + + -- Check position of our class in the hierarchy. + SELECT o.order_index INTO class_index FROM dhcp4_client_class AS c + INNER JOIN dhcp4_client_class_order AS o ON c.id = o.class_id + WHERE c.id = p_class_id; + + IF class_index IS NULL THEN + RAISE EXCEPTION 'Client class with id % does not exist.', p_class_id + USING ERRCODE = 'sql_routine_exception'; + END IF; + + -- Check position of the dependency. + SELECT o.order_index INTO dependency_index FROM dhcp4_client_class AS c + INNER JOIN dhcp4_client_class_order AS o ON c.id = o.class_id + WHERE c.id = p_dependency_id; + + IF dependency_index IS NULL THEN + RAISE EXCEPTION 'Dependency class with id % does not exist.', p_dependency_id + USING ERRCODE = 'sql_routine_exception'; + END IF; + + -- The dependency must not be later than our class. + IF dependency_index > class_index THEN + RAISE EXCEPTION + 'Client class with id % must not depend on class defined later with id %', + p_class_id, p_dependency_id USING ERRCODE = 'sql_routine_exception'; + END IF; + + -- Check if all servers associated with the new class have dependent + -- classes configured. This catches the cases that class A belongs to + -- server1 and depends on class B which belongs only to server 2. + -- It is fine if the class B belongs to all servers in this case. + -- Make a SELECT on the dhcp4_client_class_server table to gather + -- all servers to which the class belongs. LEFT JOIN it with the + -- same table, selecting all records matching the dependency class + -- and the servers to which the new class belongs. If there are + -- any NULL records joined it implies that some dependencies are + -- not met (didn't find a dependency for at least one server). + IF EXISTS( + SELECT 1 FROM dhcp4_client_class_server AS t1 + LEFT JOIN dhcp4_client_class_server AS t2 + ON t2.class_id = p_dependency_id AND (t2.server_id = 1 OR t2.server_id = t1.server_id) + WHERE t1.class_id = p_class_id AND t2.server_id IS NULL + LIMIT 1 + ) THEN + RAISE EXCEPTION 'Unmet dependencies for client class with id %', class_id + USING ERRCODE = 'sql_routine_exception'; + END IF; + RETURN; +END;\$\$; + + +-- ----------------------------------------------------------------------- +-- Trigger verifying if class dependency is met. It includes checking +-- if referenced classes exist, are associated with the same server +-- or all servers, and are defined before the class specified with +-- class_id. +-- ----------------------------------------------------------------------- +CREATE OR REPLACE FUNCTION func_dhcp4_client_class_check_dependency_BINS() + RETURNS trigger AS \$dhcp4_client_class_check_dependency_BINS\$ +BEGIN + PERFORM checkDHCPv4ClientClassDependency(NEW.class_id, NEW.dependency_id); + RETURN NULL; +END; +\$dhcp4_client_class_check_dependency_BINS\$ +LANGUAGE plpgsql; + +-- Create dhcp4_client_class_check_dependency_BINS before insert trigger. +CREATE TRIGGER dhcp4_client_class_check_dependency_BINS + BEFORE INSERT ON dhcp4_client_class_dependency + FOR EACH ROW EXECUTE PROCEDURE func_dhcp4_client_class_check_dependency_BINS(); + +-- ----------------------------------------------------------------------- +-- Stored procedure setting client class indirect dependency on KNOWN or +-- UNKNOWN built-in classes by checking this flag for the client classes +-- on which it depends. +-- +-- Parameters: +-- - client_class_id id of the client class which dependency is set, +-- - dependency_id id of the client class on which the given class depends. +-- ----------------------------------------------------------------------- +CREATE OR REPLACE FUNCTION updateDHCPv4ClientClassKnownDependency(client_class_id BIGINT, + dependency_id BIGINT) +RETURNS VOID +LANGUAGE plpgsql +AS \$\$ +DECLARE + dependency BOOLEAN; +BEGIN + -- Check if the dependency class references KNOWN/UNKNOWN. + SELECT depend_on_known_directly INTO dependency FROM dhcp4_client_class + WHERE id = dependency_id; + + -- If it doesn't, check if the dependency references KNOWN/UNKNOWN + -- indirectly (via other classes). + IF dependency = false THEN + SELECT depend_on_known_indirectly INTO dependency FROM dhcp4_client_class_order + WHERE class_id = dependency_id; + END IF; + + IF dependency = true THEN + UPDATE dhcp4_client_class_order + SET depend_on_known_indirectly = true + WHERE class_id = client_class_id; + END IF; + RETURN; +END;\$\$; + +-- ----------------------------------------------------------------------- +-- Trigger setting client class indirect dependency on KNOWN or UNKNOWN +-- built-in classes by checking this flag for the client classes on which +-- it depends. +-- ----------------------------------------------------------------------- +CREATE OR REPLACE FUNCTION func_dhcp4_client_class_dependency_AINS() + RETURNS TRIGGER AS \$dhcp4_client_class_dependency_AINS\$ +BEGIN + PERFORM updateDHCPv4ClientClassKnownDependency(NEW.class_id, NEW.dependency_id); + RETURN NULL; +END; +\$dhcp4_client_class_dependency_AINS\$ +LANGUAGE plpgsql; + +-- Create dhcp4_client_class_check_dependency_AINS after insert trigger. +CREATE TRIGGER dhcp4_client_class_dependency_AINS + AFTER INSERT ON dhcp4_client_class_dependency + FOR EACH ROW EXECUTE PROCEDURE func_dhcp4_client_class_dependency_AINS(); + +-- ----------------------------------------------------------------------- +-- Stored procedure to be executed before committing a transaction +-- updating a DHCPv4 client class. It verifies if the class dependency on +-- KNOWN or UNKNOWN built-in classes has changed as a result of the +-- update. It signals an error if it has changed and there is at least +-- one class depending on this class. +-- ----------------------------------------------------------------------- +CREATE OR REPLACE FUNCTION checkDHCPv4ClientClassKnownDependencyChange() +RETURNS VOID +LANGUAGE plpgsql +AS \$\$ +DECLARE + depended BOOLEAN := false; + depends BOOLEAN := false; + client_class_id BIGINT; + depend_on_known_directly BOOLEAN; + depend_on_known_indirectly BOOLEAN; +BEGIN + + -- Session variables are set upon a client class update. + client_class_id := get_session_big_int('kea.client_class_id'); + IF client_class_id IS NOT NULL THEN + -- Check if any of the classes depend on this class. If not, + -- it is ok to change the dependency on KNOWN/UNKNOWN. + IF EXISTS( + SELECT 1 FROM dhcp4_client_class_dependency + WHERE dependency_id = client_class_id LIMIT 1 + ) THEN + -- Using the session variables, determine whether the client class + -- depended on KNOWN/UNKNOWN before the update. + depend_on_known_directly := get_session_boolean('kea.depend_on_known_directly'); + depend_on_known_indirectly := get_session_boolean('kea.depend_on_known_indirectly'); + IF depend_on_known_directly = true OR depend_on_known_indirectly = true THEN + SET depended = true; + END IF; + + -- Check if the client class depends on KNOWN/UNKNOWN after the update. + SELECT depend_on_known_directly INTO depends FROM dhcp4_client_class + WHERE id = client_class_id; + + -- If it doesn't depend directly, check indirect dependencies. + IF depends = false THEN + SELECT depend_on_known_indirectly INTO depends FROM dhcp4_client_class_order + WHERE class_id = client_class_id; + END IF; + + -- The resulting dependency on KNOWN/UNKNOWN must not change. + IF depended <> depends THEN + RAISE EXCEPTION 'Class dependency on KNOWN/UNKNOWN built-in classes must not change.' + USING ERRCODE = 'sql_routine_exception'; + END IF; + END IF; + END IF; + RETURN; +END;\$\$; + +-- ----------------------------------------------------------------------- +-- Create table matching DHCPv4 classes with the servers. +-- ----------------------------------------------------------------------- +CREATE TABLE IF NOT EXISTS dhcp4_client_class_server ( + class_id BIGINT NOT NULL, + server_id BIGINT NOT NULL, + modification_ts TIMESTAMP WITH TIME ZONE NULL DEFAULT NULL, + PRIMARY KEY (class_id,server_id), + CONSTRAINT fk_dhcp4_client_class_class_id FOREIGN KEY (class_id) + REFERENCES dhcp4_client_class (id) + ON DELETE CASCADE, + CONSTRAINT fk_dhcp4_client_class_server_id FOREIGN KEY (server_id) + REFERENCES dhcp4_server (id) +); + +CREATE INDEX fk_dhcp4_client_class_server_id ON dhcp4_client_class_server (server_id); + +-- ----------------------------------------------------- +-- Stored procedure which creates a new entry in the +-- dhcp6_audit_revision table and sets appropriate session +-- variables to be used while creating the audit entries +-- by triggers. This procedure should be called at the +-- beginning of a transaction which modifies configuration +-- data in the database, e.g. when new subnet is added. +-- +-- Parameters: +-- - audit_ts timestamp to be associated with the audit +-- revision. +-- - server_tag is used to retrieve the server_id which +-- associates the changes applied with the particular +-- server or all servers. +-- - audit_log_message is a log message associates with +-- the audit revision. +-- - cascade_transaction is assigned to a session +-- variable which is used in some triggers to determine +-- if the audit entry should be created for them or +-- not. Specifically, this is used when DHCP options +-- are inserted, updated or deleted. If such modification +-- is a part of the larger change (e.g. change in the +-- subnet the options belong to) the dedicated audit +-- entry for options must not be created. On the other +-- hand, if the global option is being added, the +-- audit entry for the option must be created because +-- it is the sole object modified in that case. +-- Session variable disable_audit is used to disable +-- the procedure when wiping the database during +-- unit tests. This avoids issues with revision_id +-- being null. +-- ----------------------------------------------------- +CREATE OR REPLACE FUNCTION createAuditRevisionDHCP6(audit_ts TIMESTAMP WITH TIME ZONE, + server_tag VARCHAR(64), + audit_log_message TEXT, + cascade_transaction BOOLEAN) +RETURNS VOID +LANGUAGE plpgsql +AS \$\$ +DECLARE + disable_audit BOOLEAN := false; + audit_revision_id BIGINT; + srv_id BIGINT; +BEGIN + -- Fetch session value for disable_audit. + disable_audit := get_session_boolean('kea.disable_audit'); + IF disable_audit = false THEN + SELECT id INTO srv_id FROM dhcp6_server WHERE tag = server_tag; + INSERT INTO dhcp6_audit_revision (modification_ts, server_id, log_message) + VALUES (audit_ts, srv_id, audit_log_message) returning id INTO audit_revision_id; + + -- Update pertinent session variables. + PERFORM set_session_value('kea.audit_revision_id', audit_revision_id); + PERFORM set_session_value('kea.cascade_transaction', cascade_transaction); + END IF; + RETURN; +END;\$\$; + +-- ----------------------------------------------------- +-- Stored procedure which creates a new entry in the +-- dhcp6_audit table. It should be called from the +-- triggers of the tables where the config modifications +-- are applied. The audit_revision_id variable contains +-- the revision id to be placed in the audit entries. +-- +-- The following parameters are passed to this procedure: +-- - object_type_val: name of the table to be associated +-- with the applied changes. +-- - object_id_val: identifier of the modified object in +-- that table. +-- - modification_type_val: string value indicating the +-- type of the change, i.e. 'create', 'update' or +-- 'delete'. +-- Session variable disable_audit is used to disable +-- the procedure when wiping the database during +-- unit tests. This avoids issues with revision_id +-- being null. +-- ---------------------------------------------------- +CREATE OR REPLACE FUNCTION createAuditEntryDHCP6(object_type_val VARCHAR(256), + object_id_val BIGINT, + modification_type_val VARCHAR(32)) +RETURNS VOID +LANGUAGE plpgsql +AS \$\$ +DECLARE + audit_revision_id BIGINT; + disable_audit BOOLEAN := false; +BEGIN + -- Fetch session value for disable_audit. + disable_audit := get_session_boolean('kea.disable_audit'); + IF disable_audit = false THEN + -- Fetch session value most recently created audit_revision_id. + audit_revision_id := get_session_big_int('kea.audit_revision_id'); + INSERT INTO dhcp6_audit (object_type, object_id, modification_type, revision_id) + VALUES (object_type_val, object_id_val, + (SELECT id FROM modification WHERE modification_type = modification_type_val), + audit_revision_id); + END IF; + RETURN; +END;\$\$; + +-- ----------------------------------------------------------------------- +-- Create a table holding the DHCPv6 client classes. Most table +-- columns map directly to respective client class properties in +-- Kea configuration. The depend_on_known_directly column is +-- explicitly set in an insert or update statement to indicate +-- if the client class directly depends on KNOWN or UNKNOWN +-- built-in classes. A caller should determine it by evaluating +-- a test expression before inserting or updating the client +-- class in the database. The nullable follow_class_name column +-- can be used for positioning the inserted or updated client +-- class within the class hierarchy. Set this column value to +-- an existing class name, after which this class should be +-- placed in the class hierarchy. See dhcp6_client_class_order +-- description for the details of how classes are ordered. +-- ----------------------------------------------------------------------- +CREATE TABLE IF NOT EXISTS dhcp6_client_class ( + id SERIAL PRIMARY KEY NOT NULL, + name VARCHAR(128) UNIQUE NOT NULL, + test TEXT, + only_if_required BOOLEAN NOT NULL DEFAULT false, + valid_lifetime BIGINT DEFAULT NULL, + min_valid_lifetime BIGINT DEFAULT NULL, + max_valid_lifetime BIGINT DEFAULT NULL, + depend_on_known_directly BOOLEAN NOT NULL DEFAULT false, + follow_class_name VARCHAR(128) DEFAULT NULL, + modification_ts TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP +); + +CREATE INDEX key_dhcp6_client_class_modification_ts on dhcp6_client_class (modification_ts); + +-- ----------------------------------------------------------------------- +-- Create a table for ordering client classes and holding information +-- about indirect dependencies on KNOWN/UKNOWN built-in client classes. +-- Each class in the dhcp6_client_class table has a corresponding row +-- in the dhcp6_client_class_order table. A caller should not modify +-- the contents of this table. Its entries are automatically created +-- upon inserting or updating client classes in the dhcp6_client_classes +-- using triggers. The order_index designates the position of the client +-- class within the class hierarchy. If the follow_class_name value of +-- the dhcp6_client_class table is set to NULL, the client class is +-- appended at the end of the hierarchy. The assigned order_index +-- value for that class is set to a maximum current value + 1. +-- If the follow_client_class specifies a name of an existing class, +-- the generated order_index is set to an id of that class + 1, and +-- the order_index values of the later classes are incremented by 1. +-- The depend_on_known_indirectly column holds a boolean value indicating +-- whether the given class depends on KNOWN/UKNOWN built-in classes +-- via other classes, i.e. it depends on classes that directly or +-- indirectly depend on these built-ins. This value is auto-generated +-- by a trigger on the dhcp6_client_class_dependency table. +-- ----------------------------------------------------------------------- +CREATE TABLE IF NOT EXISTS dhcp6_client_class_order ( + class_id BIGINT PRIMARY KEY NOT NULL, + order_index BIGINT NOT NULL, + depend_on_known_indirectly BOOLEAN NOT NULL DEFAULT false, + CONSTRAINT fk_dhcp6_client_class_order_class_id FOREIGN KEY (class_id) + REFERENCES dhcp6_client_class (id) ON DELETE CASCADE +); + +CREATE INDEX key_dhcp6_client_class_order_index on dhcp6_client_class_order (order_index); + +-- ----------------------------------------------------------------------- +-- Stored procedure positioning an inserted or updated client class +-- within the class hierarchy, depending on the value of the +-- new_follow_class_name parameter. +-- +-- Parameters: +-- - id id of the positioned class, +-- - new_follow_class_name name of the class after which this class should be +-- positioned within the class hierarchy. +-- - old_follow_class_name previous name of the class after which this +-- class was positioned within the class hierarchy. +-- ----------------------------------------------------------------------- +CREATE OR REPLACE FUNCTION setClientClass6Order(id BIGINT, + new_follow_class_name VARCHAR(128), + old_follow_class_name VARCHAR(128)) +RETURNS VOID +LANGUAGE plpgsql +AS \$\$ +DECLARE + -- Used to fetch class's current value for depend_on_known_indirectly + l_depend_on_known_indirectly BIGINT := 0; + + -- Optionally set if the follow_class_name column value is specified. + follow_class_index BIGINT; +BEGIN + -- Fetch the class's current value of depend_on_known_indirectly. + SELECT depend_on_known_indirectly INTO l_depend_on_known_indirectly + FROM dhcp6_client_class_order WHERE id = class_id; + + -- Save it to the current session for use elsewhere during this transaction. + -- Note this does not work prior to Postgres 9.2 unless the variables are + -- defined in postgresql.conf. I think for now we put up with CB not supported + -- prior to 9.2 or we tell people how to edit the conf file. + PERFORM set_session_value('kea.depend_on_known_indirectly', l_depend_on_known_indirectly); + + -- Bail if the class is updated without re-positioning. + IF( + l_depend_on_known_indirectly IS NOT NULL AND + ((new_follow_class_name IS NULL AND old_follow_class_name IS NULL) OR + (new_follow_class_name = old_follow_class_name)) + ) THEN + -- The depend_on_known_indirectly is set to 0 because this procedure is invoked + -- whenever the dhcp6_client_class record is updated. Such update may include + -- test expression changes impacting the dependency on KNOWN/UNKNOWN classes. + -- This value will be later adjusted when dependencies are inserted. + -- TKM should we update the session value also or is it moot? + UPDATE dhcp6_client_class_order SET depend_on_known_indirectly = false + WHERE class_id = id; + RETURN; + END IF; + + IF new_follow_class_name IS NOT NULL THEN + -- Get the position of the class after which the new class should be added. + SELECT o.order_index INTO follow_class_index + FROM dhcp6_client_class AS c + INNER JOIN dhcp6_client_class_order AS o + ON c.id = o.class_id + WHERE c.name = new_follow_class_name; + + IF follow_class_index IS NULL THEN + -- The class with a name specified with new_follow_class_name does + -- not exist. + RAISE EXCEPTION 'Class %s does not exist.', new_follow_class_name + USING ERRCODE = 'sql_routine_exception'; + END IF; + + -- We need to place the new class at the position of follow_class_index + 1. + -- There may be a class at this position already. + IF EXISTS(SELECT * FROM dhcp6_client_class_order WHERE order_index = follow_class_index + 1) THEN + -- There is a class at this position already. Let's move all classes + -- starting from this position by one to create a spot for the new + -- class. + UPDATE dhcp6_client_class_order + SET order_index = order_index + 1 + WHERE order_index >= follow_class_index + 1; + -- TKM postgresql doesn't like order by here, does it matter? + -- ORDER BY order_index DESC; + END IF; + + ELSE + -- A caller did not specify the new_follow_class_name value. Let's append the + -- new class at the end of the hierarchy. + SELECT MAX(order_index) INTO follow_class_index FROM dhcp6_client_class_order; + IF follow_class_index IS NULL THEN + -- Apparently, there are no classes. Let's start from 0. + follow_class_index = 0; + END IF; + END IF; + + -- Check if moving the class doesn't break dependent classes. + IF EXISTS( + SELECT 1 FROM dhcp6_client_class_dependency AS d + INNER JOIN dhcp6_client_class_order AS o + ON d.class_id = o.class_id + WHERE d.dependency_id = id AND o.order_index < follow_class_index + 1 + LIMIT 1 + ) THEN + RAISE EXCEPTION 'Unable to move class with id %s because it would break its dependencies', id + USING ERRCODE = 'sql_routine_exception'; + END IF; + + -- The depend_on_known_indirectly is set to 0 because this procedure is invoked + -- whenever the dhcp6_client_class record is updated. Such update may include + -- test expression changes impacting the dependency on KNOWN/UNKNOWN classes. + -- This value will be later adjusted when dependencies are inserted. + -- TKM - note that ON CONFLICT requires PostgreSQL 9.5 or later. + UPDATE dhcp6_client_class_order + SET order_index = follow_class_index + 1, + depend_on_known_indirectly = l_depend_on_known_indirectly + WHERE class_id = id; + IF FOUND THEN + RETURN; + END IF; + + INSERT INTO dhcp6_client_class_order(class_id, order_index, depend_on_known_indirectly) + VALUES (id, follow_class_index + 1, 0); + RETURN; +END;\$\$; + +-- ----------------------------------------------------------------------- +-- Trigger procedure to position an inserted class within the class hierarchy +-- and create audit. +-- ----------------------------------------------------------------------- +CREATE OR REPLACE FUNCTION func_dhcp6_client_class_AINS() RETURNS trigger AS \$dhcp6_client_class_AINS\$ +BEGIN + PERFORM setClientClass6Order(NEW.id, NEW.follow_class_name, NULL); + PERFORM createAuditEntryDHCP6('dhcp6_client_class', NEW.id, 'create'); + RETURN NULL; +END; +\$dhcp6_client_class_AINS\$ +LANGUAGE plpgsql; + +-- Create dhcp6_client_class insert trigger +CREATE TRIGGER dhcp6_client_class_AINS + AFTER INSERT ON dhcp6_client_class + FOR EACH ROW EXECUTE PROCEDURE func_dhcp6_client_class_AINS(); + +-- ----------------------------------------------------------------------- +-- Trigger to position an updated class within the class hierarchy, +-- create audit and remember the direct dependency on the +-- KNOWN/UNKNOWN built-in classes before the class update. +-- When updating a client class, it is very important to ensure that +-- its dependency on KNOWN or UNKNOWN built-in client classes is not +-- changed. It is because there may be other classes that depend on +-- these built-ins via this class. Changing the dependency would break +-- the chain of dependencies for other classes. Here, we store the +-- information about the dependency in the session variables. Their +-- values will be compared with the new dependencies after an update. +-- If they change, an error will be signaled. +-- ----------------------------------------------------------------------- +CREATE OR REPLACE FUNCTION func_dhcp6_client_class_AUPD() RETURNS trigger AS \$dhcp6_client_class_AUPD\$ +BEGIN + PERFORM set_session_value('kea.depend_on_known_directly', OLD.depend_on_known_directly); + PERFORM set_session_value('kea.client_class_id', NEW.id); + PERFORM setClientClass6Order(NEW.id, NEW.follow_class_name, OLD.follow_class_name); + PERFORM createAuditEntryDHCP6('dhcp6_client_class', NEW.id, 'update'); + RETURN NULL; +END; +\$dhcp6_client_class_AUPD\$ +LANGUAGE plpgsql; + +-- Create dhcp6_client_class update insert trigger +CREATE TRIGGER dhcp6_client_class_AUPD + AFTER UPDATE ON dhcp6_client_class + FOR EACH ROW EXECUTE PROCEDURE func_dhcp6_client_class_AUPD(); + +-- ----------------------------------------------------------------------- +-- Trigger procedure to create the audit entry for client class delete. +-- ----------------------------------------------------------------------- +CREATE OR REPLACE FUNCTION func_dhcp6_client_class_ADEL() RETURNS trigger AS \$dhcp6_client_class_ADEL\$ +BEGIN + PERFORM createAuditEntryDHCP6('dhcp6_client_class', OLD.id, 'delete'); + RETURN NULL; +END; +\$dhcp6_client_class_ADEL\$ +LANGUAGE plpgsql; + +-- Create dhcp6_client_class delete trigger +CREATE TRIGGER dhcp6_client_class_ADEL + AFTER DELETE ON dhcp6_client_class + FOR EACH ROW EXECUTE PROCEDURE func_dhcp6_client_class_ADEL(); + +-- ----------------------------------------------------------------------- +-- Create a table associating client classes stored in the +-- dhcp6_client_class table with their dependencies. There is +-- an M:N relationship between these tables. Each class may have +-- many dependencies (created using member operator in test expression), +-- and each class may be a dependency for many other classes. A caller +-- is responsible for inserting dependencies for a class after inserting +-- or updating it in the dhcp6_client_class table. A caller should +-- delete all existing dependencies for an updated client class, evaluate +-- test expression to discover new dependencies (in case test expression +-- has changed), and insert new dependencies to this table. +-- ----------------------------------------------------------------------- +CREATE TABLE IF NOT EXISTS dhcp6_client_class_dependency ( + class_id BIGINT PRIMARY KEY NOT NULL, + dependency_id BIGINT NOT NULL, + + CONSTRAINT dhcp6_client_class_class_id FOREIGN KEY (class_id) + REFERENCES dhcp6_client_class (id) ON DELETE CASCADE, + CONSTRAINT dhcp6_client_class_dependency_id FOREIGN KEY (dependency_id) + REFERENCES dhcp6_client_class (id) +); + +CREATE INDEX dhcp6_client_class_dependency_id_idx on dhcp6_client_class_dependency (dependency_id); + +-- ----------------------------------------------------------------------- +-- Stored procedure verifying if class dependency is met. It includes +-- checking if referenced classes exist, are associated with the same +-- server or all servers, and are defined before the class specified with +-- class_id. +-- +-- Parameters: +-- - p_class_id id client class, +-- - p_dependency_id id of the dependency. +-- ----------------------------------------------------------------------- +CREATE OR REPLACE FUNCTION checkDHCPv6ClientClassDependency(p_class_id BIGINT, + p_dependency_id BIGINT) +RETURNS VOID +LANGUAGE plpgsql +AS \$\$ +DECLARE + class_index BIGINT; + dependency_index BIGINT; +BEGIN + -- We could check the same with a constraint but later in this + -- trigger we use this value to verify if the dependencies are + -- met. + IF p_class_id IS NULL THEN + RAISE EXCEPTION 'Client class id must not be NULL.' + USING ERRCODE = 'sql_routine_exception'; + END IF; + + IF p_dependency_id IS NULL THEN + RAISE EXCEPTION 'Class dependency id must not be NULL.' + USING ERRCODE = 'sql_routine_exception'; + END IF; + + -- Dependencies on self make no sense. + IF p_class_id = p_dependency_id THEN + RAISE EXCEPTION 'Client class must not have dependency on self.' + USING ERRCODE = 'sql_routine_exception'; + END IF; + + -- Check position of our class in the hierarchy. + SELECT o.order_index INTO class_index FROM dhcp6_client_class AS c + INNER JOIN dhcp6_client_class_order AS o ON c.id = o.class_id + WHERE c.id = p_class_id; + + IF class_index IS NULL THEN + RAISE EXCEPTION 'Client class with id % does not exist.', p_class_id + USING ERRCODE = 'sql_routine_exception'; + END IF; + + -- Check position of the dependency. + SELECT o.order_index INTO dependency_index FROM dhcp6_client_class AS c + INNER JOIN dhcp6_client_class_order AS o ON c.id = o.class_id + WHERE c.id = p_dependency_id; + + IF dependency_index IS NULL THEN + RAISE EXCEPTION 'Dependency class with id % does not exist.', p_dependency_id + USING ERRCODE = 'sql_routine_exception'; + END IF; + + -- The dependency must not be later than our class. + IF dependency_index > class_index THEN + RAISE EXCEPTION + 'Client class with id % must not depend on class defined later with id %', + p_class_id, p_dependency_id USING ERRCODE = 'sql_routine_exception'; + END IF; + + -- Check if all servers associated with the new class have dependent + -- classes configured. This catches the cases that class A belongs to + -- server1 and depends on class B which belongs only to server 2. + -- It is fine if the class B belongs to all servers in this case. + -- Make a SELECT on the dhcp6_client_class_server table to gather + -- all servers to which the class belongs. LEFT JOIN it with the + -- same table, selecting all records matching the dependency class + -- and the servers to which the new class belongs. If there are + -- any NULL records joined it implies that some dependencies are + -- not met (didn't find a dependency for at least one server). + IF EXISTS( + SELECT 1 FROM dhcp6_client_class_server AS t1 + LEFT JOIN dhcp6_client_class_server AS t2 + ON t2.class_id = p_dependency_id AND (t2.server_id = 1 OR t2.server_id = t1.server_id) + WHERE t1.class_id = p_class_id AND t2.server_id IS NULL + LIMIT 1 + ) THEN + RAISE EXCEPTION 'Unmet dependencies for client class with id %', p_class_id + USING ERRCODE = 'sql_routine_exception'; + END IF; + RETURN; +END;\$\$; + + +-- ----------------------------------------------------------------------- +-- Trigger verifying if class dependency is met. It includes checking +-- if referenced classes exist, are associated with the same server +-- or all servers, and are defined before the class specified with +-- class_id. +-- ----------------------------------------------------------------------- +CREATE OR REPLACE FUNCTION func_dhcp6_client_class_check_dependency_BINS() + RETURNS trigger AS \$dhcp6_client_class_check_dependency_BINS\$ +BEGIN + PERFORM checkDHCPv6ClientClassDependency(NEW.class_id, NEW.dependency_id); + RETURN NULL; +END; +\$dhcp6_client_class_check_dependency_BINS\$ +LANGUAGE plpgsql; + +-- Create dhcp6_client_class_check_dependency_BINS before insert trigger. +CREATE TRIGGER dhcp6_client_class_check_dependency_BINS + BEFORE INSERT ON dhcp6_client_class_dependency + FOR EACH ROW EXECUTE PROCEDURE func_dhcp6_client_class_check_dependency_BINS(); + +-- ----------------------------------------------------------------------- +-- Stored procedure setting client class indirect dependency on KNOWN or +-- UNKNOWN built-in classes by checking this flag for the client classes +-- on which it depends. +-- +-- Parameters: +-- - client_class_id id of the client class which dependency is set, +-- - dependency_id id of the client class on which the given class depends. +-- ----------------------------------------------------------------------- +CREATE OR REPLACE FUNCTION updateDHCPv6ClientClassKnownDependency(client_class_id BIGINT, + dependency_id BIGINT) +RETURNS VOID +LANGUAGE plpgsql +AS \$\$ +DECLARE + dependency BOOLEAN; +BEGIN + -- Check if the dependency class references KNOWN/UNKNOWN. + SELECT depend_on_known_directly INTO dependency FROM dhcp6_client_class + WHERE id = dependency_id; + + -- If it doesn't, check if the dependency references KNOWN/UNKNOWN + -- indirectly (via other classes). + IF dependency = false THEN + SELECT depend_on_known_indirectly INTO dependency FROM dhcp6_client_class_order + WHERE class_id = dependency_id; + END IF; + + IF dependency = true THEN + UPDATE dhcp6_client_class_order + SET depend_on_known_indirectly = true + WHERE class_id = client_class_id; + END IF; + RETURN; +END;\$\$; + +-- ----------------------------------------------------------------------- +-- Trigger setting client class indirect dependency on KNOWN or UNKNOWN +-- built-in classes by checking this flag for the client classes on which +-- it depends. +-- ----------------------------------------------------------------------- +CREATE OR REPLACE FUNCTION func_dhcp6_client_class_dependency_AINS() + RETURNS TRIGGER AS \$dhcp6_client_class_dependency_AINS\$ +BEGIN + PERFORM updateDHCPv6ClientClassKnownDependency(NEW.class_id, NEW.dependency_id); + RETURN NULL; +END; +\$dhcp6_client_class_dependency_AINS\$ +LANGUAGE plpgsql; + +-- Create dhcp6_client_class_check_dependency_AINS after insert trigger. +CREATE TRIGGER dhcp6_client_class_dependency_AINS + AFTER INSERT ON dhcp6_client_class_dependency + FOR EACH ROW EXECUTE PROCEDURE func_dhcp6_client_class_dependency_AINS(); + +-- ----------------------------------------------------------------------- +-- Stored procedure to be executed before committing a transaction +-- updating a DHCPv6 client class. It verifies if the class dependency on +-- KNOWN or UNKNOWN built-in classes has changed as a result of the +-- update. It signals an error if it has changed and there is at least +-- one class depending on this class. +-- ----------------------------------------------------------------------- +CREATE OR REPLACE FUNCTION checkDHCPv6ClientClassKnownDependencyChange() +RETURNS VOID +LANGUAGE plpgsql +AS \$\$ +DECLARE + depended BOOLEAN := false; + depends BOOLEAN := false; + client_class_id BIGINT; + depend_on_known_directly BOOLEAN; + depend_on_known_indirectly BOOLEAN; +BEGIN + + -- Session variables are set upon a client class update. + client_class_id := get_session_big_int('kea.client_class_id'); + IF client_class_id IS NOT NULL THEN + -- Check if any of the classes depend on this class. If not, + -- it is ok to change the dependency on KNOWN/UNKNOWN. + IF EXISTS( + SELECT 1 FROM dhcp6_client_class_dependency + WHERE dependency_id = client_class_id LIMIT 1 + ) THEN + -- Using the session variables, determine whether the client class + -- depended on KNOWN/UNKNOWN before the update. + depend_on_known_directly := get_session_boolean('kea.depend_on_known_directly'); + depend_on_known_indirectly := get_session_boolean('kea.depend_on_known_indirectly'); + IF depend_on_known_directly = true OR depend_on_known_indirectly = true THEN + SET depended = true; + END IF; + + -- Check if the client class depends on KNOWN/UNKNOWN after the update. + SELECT depend_on_known_directly INTO depends FROM dhcp6_client_class + WHERE id = client_class_id; + + -- If it doesn't depend directly, check indirect dependencies. + IF depends = false THEN + SELECT depend_on_known_indirectly INTO depends FROM dhcp6_client_class_order + WHERE class_id = client_class_id; + END IF; + + -- The resulting dependency on KNOWN/UNKNOWN must not change. + IF depended <> depends THEN + RAISE EXCEPTION 'Class dependency on KNOWN/UNKNOWN built-in classes must not change.' + USING ERRCODE = 'sql_routine_exception'; + END IF; + END IF; + END IF; + RETURN; +END;\$\$; + +-- ----------------------------------------------------------------------- +-- Create table matching DHCPv6 classes with the servers. +-- ----------------------------------------------------------------------- +CREATE TABLE IF NOT EXISTS dhcp6_client_class_server ( + class_id BIGINT NOT NULL, + server_id BIGINT NOT NULL, + modification_ts TIMESTAMP WITH TIME ZONE NULL DEFAULT NULL, + PRIMARY KEY (class_id,server_id), + CONSTRAINT fk_dhcp6_client_class_class_id FOREIGN KEY (class_id) + REFERENCES dhcp6_client_class (id) + ON DELETE CASCADE, + CONSTRAINT fk_dhcp6_client_class_server_id FOREIGN KEY (server_id) + REFERENCES dhcp6_server (id) +); + +CREATE INDEX fk_dhcp6_client_class_server_id ON dhcp6_client_class_server (server_id); + +-- Trigger function for dhcp4_pool_BDEL called BEFORE DELETE on dhcp4_pool +-- It removes pool specific options upon removal of the pool. +CREATE OR REPLACE FUNCTION func_dhcp4_pool_BDEL() RETURNS TRIGGER AS \$dhcp4_pool_BDEL\$ +BEGIN + DELETE FROM dhcp4_options WHERE scope_id = 5 AND pool_id = OLD.id; + RETURN OLD; +END; +\$dhcp4_pool_BDEL\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp4_pool_BDEL + BEFORE DELETE ON dhcp4_pool + FOR EACH ROW EXECUTE PROCEDURE func_dhcp4_pool_BDEL(); + +-- Trigger function for dhcp6_pool_BDEL called BEFORE DELETE on dhcp6_pool +-- It removes pool specific options upon removal of the pool. +CREATE OR REPLACE FUNCTION func_dhcp6_pool_BDEL() RETURNS TRIGGER AS \$dhcp6_pool_BDEL\$ +BEGIN + DELETE FROM dhcp6_options WHERE scope_id = 5 AND pool_id = OLD.id; + RETURN OLD; +END; +\$dhcp6_pool_BDEL\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp6_pool_BDEL + BEFORE DELETE ON dhcp6_pool + FOR EACH ROW EXECUTE PROCEDURE func_dhcp6_pool_BDEL(); + +-- Trigger function for dhcp4_global_parameter_AINS called AFTER INSERT on dhcp4_global_parameter +CREATE OR REPLACE FUNCTION func_dhcp4_global_parameter_AINS() RETURNS TRIGGER AS \$dhcp4_global_parameter_AINS\$ +BEGIN + PERFORM createAuditEntryDHCP4('dhcp4_global_parameter', NEW.id, 'create'); + RETURN NULL; +END; +\$dhcp4_global_parameter_AINS\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp4_global_parameter_AINS + AFTER INSERT ON dhcp4_global_parameter + FOR EACH ROW EXECUTE PROCEDURE func_dhcp4_global_parameter_AINS(); + + +-- Trigger function for dhcp4_global_parameter_AUPD called AFTER UPDATE on dhcp4_global_parameter +CREATE OR REPLACE FUNCTION func_dhcp4_global_parameter_AUPD() RETURNS TRIGGER AS \$dhcp4_global_parameter_AUPD\$ +BEGIN + PERFORM createAuditEntryDHCP4('dhcp4_global_parameter', NEW.id, 'update'); + RETURN NULL; +END; +\$dhcp4_global_parameter_AUPD\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp4_global_parameter_AUPD + AFTER UPDATE ON dhcp4_global_parameter + FOR EACH ROW EXECUTE PROCEDURE func_dhcp4_global_parameter_AUPD(); + + +-- Trigger function for dhcp4_global_parameter_ADEL called AFTER DELETE on dhcp4_global_parameter +CREATE OR REPLACE FUNCTION func_dhcp4_global_parameter_ADEL() RETURNS TRIGGER AS \$dhcp4_global_parameter_ADEL\$ +BEGIN + PERFORM createAuditEntryDHCP4('dhcp4_global_parameter', OLD.id, 'delete'); + RETURN NULL; +END; +\$dhcp4_global_parameter_ADEL\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp4_global_parameter_ADEL + AFTER DELETE ON dhcp4_global_parameter + FOR EACH ROW EXECUTE PROCEDURE func_dhcp4_global_parameter_ADEL(); + +-- Trigger function for dhcp4_subnet_AINS called AFTER INSERT on dhcp4_subnet +CREATE OR REPLACE FUNCTION func_dhcp4_subnet_AINS() RETURNS TRIGGER AS \$dhcp4_subnet_AINS\$ +BEGIN + PERFORM createAuditEntryDHCP4('dhcp4_subnet', NEW.subnet_id, 'create'); + RETURN NULL; +END; +\$dhcp4_subnet_AINS\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp4_subnet_AINS + AFTER INSERT ON dhcp4_subnet + FOR EACH ROW EXECUTE PROCEDURE func_dhcp4_subnet_AINS(); + + +-- Trigger function for dhcp4_subnet_AUPD called AFTER UPDATE on dhcp4_subnet +CREATE OR REPLACE FUNCTION func_dhcp4_subnet_AUPD() RETURNS TRIGGER AS \$dhcp4_subnet_AUPD\$ +BEGIN + PERFORM createAuditEntryDHCP4('dhcp4_subnet', NEW.subnet_id, 'update'); + RETURN NULL; +END; +\$dhcp4_subnet_AUPD\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp4_subnet_AUPD + AFTER UPDATE ON dhcp4_subnet + FOR EACH ROW EXECUTE PROCEDURE func_dhcp4_subnet_AUPD(); + + +-- Trigger function for dhcp4_shared_network_AINS called AFTER INSERT on dhcp4_shared_network +CREATE OR REPLACE FUNCTION func_dhcp4_shared_network_AINS() RETURNS TRIGGER AS \$dhcp4_shared_network_AINS\$ +BEGIN + PERFORM createAuditEntryDHCP4('dhcp4_shared_network', NEW.id, 'create'); + RETURN NULL; +END; +\$dhcp4_shared_network_AINS\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp4_shared_network_AINS + AFTER INSERT ON dhcp4_shared_network + FOR EACH ROW EXECUTE PROCEDURE func_dhcp4_shared_network_AINS(); + +-- Trigger function for dhcp4_shared_network_AUPD called AFTER UPDATE on dhcp4_shared_network +CREATE OR REPLACE FUNCTION func_dhcp4_shared_network_AUPD() RETURNS TRIGGER AS \$dhcp4_shared_network_AUPD\$ +BEGIN + PERFORM createAuditEntryDHCP4('dhcp4_shared_network', NEW.id, 'update'); + RETURN NULL; +END; +\$dhcp4_shared_network_AUPD\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp4_shared_network_AUPD + AFTER UPDATE ON dhcp4_shared_network + FOR EACH ROW EXECUTE PROCEDURE func_dhcp4_shared_network_AUPD(); + +-- Trigger function for dhcp4_shared_network_ADEL called AFTER DELETE on dhcp4_shared_network +CREATE OR REPLACE FUNCTION func_dhcp4_shared_network_ADEL() RETURNS TRIGGER AS \$dhcp4_shared_network_ADEL\$ +BEGIN + PERFORM createAuditEntryDHCP4('dhcp4_shared_network', OLD.id, 'delete'); + RETURN NULL; +END; +\$dhcp4_shared_network_ADEL\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp4_shared_network_ADEL + AFTER DELETE ON dhcp4_shared_network + FOR EACH ROW EXECUTE PROCEDURE func_dhcp4_shared_network_ADEL(); + +-- Trigger function for dhcp4_option_def_AINS called AFTER INSERT on dhcp4_option_def +CREATE OR REPLACE FUNCTION func_dhcp4_option_def_AINS() RETURNS TRIGGER AS \$dhcp4_option_def_AINS\$ +BEGIN + PERFORM createAuditEntryDHCP4('dhcp4_option_def', NEW.id, 'create'); + RETURN NULL; +END; +\$dhcp4_option_def_AINS\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp4_option_def_AINS + AFTER INSERT ON dhcp4_option_def + FOR EACH ROW EXECUTE PROCEDURE func_dhcp4_option_def_AINS(); + +-- Trigger function for dhcp4_option_def_AUPD called AFTER UPDATE on dhcp4_option_def +CREATE OR REPLACE FUNCTION func_dhcp4_option_def_AUPD() RETURNS TRIGGER AS \$dhcp4_option_def_AUPD\$ +BEGIN + PERFORM createAuditEntryDHCP4('dhcp4_option_def', NEW.id, 'update'); + RETURN NULL; +END; +\$dhcp4_option_def_AUPD\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp4_option_def_AUPD + AFTER UPDATE ON dhcp4_option_def + FOR EACH ROW EXECUTE PROCEDURE func_dhcp4_option_def_AUPD(); + +-- Trigger function for dhcp4_option_def_ADEL called AFTER DELETE on dhcp4_option_def +CREATE OR REPLACE FUNCTION func_dhcp4_option_def_ADEL() RETURNS TRIGGER AS \$dhcp4_option_def_ADEL\$ +BEGIN + PERFORM createAuditEntryDHCP4('dhcp4_option_def', OLD.id, 'delete'); + RETURN NULL; +END; +\$dhcp4_option_def_ADEL\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp4_option_def_ADEL + AFTER DELETE ON dhcp4_option_def + FOR EACH ROW EXECUTE PROCEDURE func_dhcp4_option_def_ADEL(); + +-- ----------------------------------------------------- +-- +-- Stored procedure which updates modification timestamp of +-- a parent object when an option is modified. +-- +-- The following parameters are passed to the procedure: +-- - modification_type: 'create', 'update' or 'delete' +-- - scope_id: identifier of the option scope, e.g. +-- global, subnet specific etc. +-- - option_id: identifier of the option. +-- - p_subnet_id: identifier of the subnet if the option +-- belongs to the subnet. +-- - host_id: identifier of the host if the option +-- - belongs to the host. +-- - network_name: shared network name if the option +-- belongs to the shared network. +-- - pool_id: identifier of the pool if the option +-- belongs to the pool. +-- - p_modification_ts: modification timestamp of the +-- option. +-- Some arguments are prefixed with "p_" to avoid ambiguity +-- with column names in SQL statements. PostgreSQL does not +-- allow table aliases to be used with column names in update +-- set expressions. +-- ----------------------------------------------------- +CREATE OR REPLACE FUNCTION createOptionAuditDHCP4(modification_type VARCHAR, + scope_id SMALLINT, + option_id INT, + p_subnet_id BIGINT, + host_id INT, + network_name VARCHAR, + pool_id BIGINT, + p_modification_ts TIMESTAMP WITH TIME ZONE) +RETURNS VOID +LANGUAGE plpgsql +AS \$\$ +DECLARE + -- These variables will hold shared network id and subnet id that + -- we will select. + snid VARCHAR(128); + sid BIGINT; + cascade_transaction BOOLEAN := true; + ct TEXT; +BEGIN + -- Cascade transaction flag is set to true to prevent creation of + -- the audit entries for the options when the options are + -- created as part of the parent object creation or update. + -- For example: when the option is added as part of the subnet + -- addition, the cascade transaction flag is equal to true. If + -- the option is added into the existing subnet the cascade + -- transaction is equal to false. Note that depending on the option + -- scope the audit entry will contain the object_type value + -- of the parent object to cause the server to replace the + -- entire subnet. The only case when the object_type will be + -- set to 'dhcp4_options' is when a global option is added. + -- Global options do not have the owner. + + cascade_transaction := get_session_boolean('kea.cascade_transaction'); + IF cascade_transaction = false THEN + -- todo: host manager hasn't been updated to use audit + -- mechanisms so ignore host specific options for now. + IF scope_id = 0 THEN + -- If a global option is added or modified, create audit + -- entry for the 'dhcp4_options' table. + PERFORM createAuditEntryDHCP4('dhcp4_options', option_id, modification_type); + ELSEIF scope_id = 1 THEN + -- If subnet specific option is added or modified, update + -- the modification timestamp of this subnet to allow the + -- servers to refresh the subnet information. This will + -- also result in creating an audit entry for this subnet. + UPDATE dhcp4_subnet SET modification_ts = p_modification_ts + WHERE subnet_id = p_subnet_id; + ELSEIF scope_id = 4 THEN + -- If shared network specific option is added or modified, + -- update the modification timestamp of this shared network + -- to allow the servers to refresh the shared network + -- information. This will also result in creating an + -- audit entry for this shared network. + SELECT id INTO snid FROM dhcp4_shared_network WHERE name = network_name LIMIT 1; + UPDATE dhcp4_shared_network SET modification_ts = p_modification_ts + WHERE id = snid; + ELSEIF scope_id = 5 THEN + -- If pool specific option is added or modified, update + -- the modification timestamp of the owning subnet. + SELECT dhcp4_pool.subnet_id INTO sid FROM dhcp4_pool WHERE id = pool_id; + UPDATE dhcp4_subnet SET modification_ts = p_modification_ts + WHERE subnet_id = sid; + END IF; + END IF; + RETURN; +END;\$\$; + +-- Trigger function for dhcp4_options_AINS called AFTER INSERT on dhcp4_options +CREATE OR REPLACE FUNCTION func_dhcp4_options_AINS() RETURNS TRIGGER AS \$dhcp4_options_AINS\$ +BEGIN + PERFORM createOptionAuditDHCP4('create', NEW.scope_id, NEW.option_id, NEW.dhcp4_subnet_id, + NEW.host_id, NEW.shared_network_name, NEW.pool_id, + NEW.modification_ts); + RETURN NULL; +END; +\$dhcp4_options_AINS\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp4_options_AINS + AFTER INSERT ON dhcp4_options + FOR EACH ROW EXECUTE PROCEDURE func_dhcp4_options_AINS(); + + +-- Trigger function for dhcp4_options_AUPD called AFTER UPDATE on dhcp4_options +CREATE OR REPLACE FUNCTION func_dhcp4_options_AUPD() RETURNS TRIGGER AS \$dhcp4_options_AUPD\$ +BEGIN + PERFORM createOptionAuditDHCP4('update', NEW.scope_id, NEW.option_id, NEW.dhcp4_subnet_id, + NEW.host_id, NEW.shared_network_name, NEW.pool_id, + NEW.modification_ts); + RETURN NULL; +END; +\$dhcp4_options_AUPD\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp4_options_AUPD + AFTER UPDATE ON dhcp4_options + FOR EACH ROW EXECUTE PROCEDURE func_dhcp4_options_AUPD(); + +-- Trigger function for dhcp4_options_ADEL called AFTER DELETE on dhcp4_options +CREATE OR REPLACE FUNCTION func_dhcp4_options_ADEL() RETURNS TRIGGER AS \$dhcp4_options_ADEL\$ +BEGIN + PERFORM createOptionAuditDHCP4('delete', OLD.scope_id, OLD.option_id, OLD.dhcp4_subnet_id, + OLD.host_id, OLD.shared_network_name, OLD.pool_id, + NOW()); + RETURN NULL; +END; +\$dhcp4_options_ADEL\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp4_options_ADEL + AFTER DELETE ON dhcp4_options + FOR EACH ROW EXECUTE PROCEDURE func_dhcp4_options_ADEL(); + +-- Trigger function for dhcp6_global_parameter_AINS called AFTER INSERT on dhcp6_global_parameter +CREATE OR REPLACE FUNCTION func_dhcp6_global_parameter_AINS() RETURNS TRIGGER AS \$dhcp6_global_parameter_AINS\$ +BEGIN + PERFORM createAuditEntryDHCP6('dhcp6_global_parameter', NEW.id, 'create'); + RETURN NULL; +END; +\$dhcp6_global_parameter_AINS\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp6_global_parameter_AINS + AFTER INSERT ON dhcp6_global_parameter + FOR EACH ROW EXECUTE PROCEDURE func_dhcp6_global_parameter_AINS(); + +-- Trigger function for dhcp6_global_parameter_AUPD called AFTER UPDATE on dhcp6_global_parameter +CREATE OR REPLACE FUNCTION func_dhcp6_global_parameter_AUPD() RETURNS TRIGGER AS \$dhcp6_global_parameter_AUPD\$ +BEGIN + PERFORM createAuditEntryDHCP6('dhcp6_global_parameter', NEW.id, 'update'); + RETURN NULL; +END; +\$dhcp6_global_parameter_AUPD\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp6_global_parameter_AUPD + AFTER UPDATE ON dhcp6_global_parameter + FOR EACH ROW EXECUTE PROCEDURE func_dhcp6_global_parameter_AUPD(); + +-- Trigger function for dhcp6_global_parameter_ADEL called AFTER DELETE on dhcp6_global_parameter +CREATE OR REPLACE FUNCTION func_dhcp6_global_parameter_ADEL() RETURNS TRIGGER AS \$dhcp6_global_parameter_ADEL\$ +BEGIN + PERFORM createAuditEntryDHCP6('dhcp6_global_parameter', OLD.id, 'delete'); + RETURN NULL; +END; +\$dhcp6_global_parameter_ADEL\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp6_global_parameter_ADEL + AFTER DELETE ON dhcp6_global_parameter + FOR EACH ROW EXECUTE PROCEDURE func_dhcp6_global_parameter_ADEL(); + +-- Trigger function for dhcp6_subnet_AINS called AFTER INSERT on dhcp6_subnet +CREATE OR REPLACE FUNCTION func_dhcp6_subnet_AINS() RETURNS TRIGGER AS \$dhcp6_subnet_AINS\$ +BEGIN + PERFORM createAuditEntryDHCP6('dhcp6_subnet', NEW.subnet_id, 'create'); + RETURN NULL; +END; +\$dhcp6_subnet_AINS\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp6_subnet_AINS + AFTER INSERT ON dhcp6_subnet + FOR EACH ROW EXECUTE PROCEDURE func_dhcp6_subnet_AINS(); + +-- Trigger function for dhcp6_subnet_AUPD called AFTER UPDATE on dhcp6_subnet +CREATE OR REPLACE FUNCTION func_dhcp6_subnet_AUPD() RETURNS TRIGGER AS \$dhcp6_subnet_AUPD\$ +BEGIN + PERFORM createAuditEntryDHCP6('dhcp6_subnet', NEW.subnet_id, 'update'); + RETURN NULL; +END; +\$dhcp6_subnet_AUPD\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp6_subnet_AUPD + AFTER UPDATE ON dhcp6_subnet + FOR EACH ROW EXECUTE PROCEDURE func_dhcp6_subnet_AUPD(); + +-- Trigger function for dhcp6_shared_network_AINS called AFTER INSERT on dhcp6_shared_network +CREATE OR REPLACE FUNCTION func_dhcp6_shared_network_AINS() RETURNS TRIGGER AS \$dhcp6_shared_network_AINS\$ +BEGIN + PERFORM createAuditEntryDHCP6('dhcp6_shared_network', NEW.id, 'create'); + RETURN NULL; +END; +\$dhcp6_shared_network_AINS\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp6_shared_network_AINS + AFTER INSERT ON dhcp6_shared_network + FOR EACH ROW EXECUTE PROCEDURE func_dhcp6_shared_network_AINS(); + +-- Trigger function for dhcp6_shared_network_AUPD called AFTER UPDATE on dhcp6_shared_network +CREATE OR REPLACE FUNCTION func_dhcp6_shared_network_AUPD() RETURNS TRIGGER AS \$dhcp6_shared_network_AUPD\$ +BEGIN + PERFORM createAuditEntryDHCP6('dhcp6_shared_network', NEW.id, 'update'); + RETURN NULL; +END; +\$dhcp6_shared_network_AUPD\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp6_shared_network_AUPD + AFTER UPDATE ON dhcp6_shared_network + FOR EACH ROW EXECUTE PROCEDURE func_dhcp6_shared_network_AUPD(); + +-- Trigger function for dhcp6_shared_network_ADEL called AFTER DELETE on dhcp6_shared_network +CREATE OR REPLACE FUNCTION func_dhcp6_shared_network_ADEL() RETURNS TRIGGER AS \$dhcp6_shared_network_ADEL\$ +BEGIN + PERFORM createAuditEntryDHCP6('dhcp6_shared_network', OLD.id, 'delete'); + RETURN NULL; +END; +\$dhcp6_shared_network_ADEL\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp6_shared_network_ADEL + AFTER DELETE ON dhcp6_shared_network + FOR EACH ROW EXECUTE PROCEDURE func_dhcp6_shared_network_ADEL(); + +-- Trigger function for dhcp6_option_def_AINS called AFTER INSERT on dhcp6_option_def +CREATE OR REPLACE FUNCTION func_dhcp6_option_def_AINS() RETURNS TRIGGER AS \$dhcp6_option_def_AINS\$ +BEGIN + PERFORM createAuditEntryDHCP6('dhcp6_option_def', NEW.id, 'create'); + RETURN NULL; +END; +\$dhcp6_option_def_AINS\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp6_option_def_AINS + AFTER INSERT ON dhcp6_option_def + FOR EACH ROW EXECUTE PROCEDURE func_dhcp6_option_def_AINS(); + +-- Trigger function for dhcp6_option_def_AUPD called AFTER UPDATE on dhcp6_option_def +CREATE OR REPLACE FUNCTION func_dhcp6_option_def_AUPD() RETURNS TRIGGER AS \$dhcp6_option_def_AUPD\$ +BEGIN + PERFORM createAuditEntryDHCP6('dhcp6_option_def', NEW.id, 'update'); + RETURN NULL; +END; +\$dhcp6_option_def_AUPD\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp6_option_def_AUPD + AFTER UPDATE ON dhcp6_option_def + FOR EACH ROW EXECUTE PROCEDURE func_dhcp6_option_def_AUPD(); + +-- Trigger function for dhcp6_option_def_ADEL called AFTER DELETE on dhcp6_option_def +CREATE OR REPLACE FUNCTION func_dhcp6_option_def_ADEL() RETURNS TRIGGER AS \$dhcp6_option_def_ADEL\$ +BEGIN + PERFORM createAuditEntryDHCP6('dhcp6_option_def', OLD.id, 'delete'); + RETURN NULL; +END; +\$dhcp6_option_def_ADEL\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp6_option_def_ADEL + AFTER DELETE ON dhcp6_option_def + FOR EACH ROW EXECUTE PROCEDURE func_dhcp6_option_def_ADEL(); + +-- - pool_id: identifier of the pool if the option +-- belongs to the pool. +-- - pd_pool_id: identifier of the pool if the option +-- belongs to the pd pool. +-- - modification_ts: modification timestamp of the +-- option. +-- ----------------------------------------------------- +CREATE OR REPLACE FUNCTION createOptionAuditDHCP6(modification_type VARCHAR(32), + scope_id SMALLINT, + option_id INT, + subnet_id BIGINT, + host_id INT, + network_name VARCHAR(128), + pool_id BIGINT, + pd_pool_id BIGINT, + modification_ts TIMESTAMP WITH TIME ZONE) +RETURNS VOID +LANGUAGE plpgsql +AS \$\$ +DECLARE + -- These variables will hold shared network id and subnet id that + -- we will select. + snid VARCHAR(128); + sid BIGINT; + cascade_transaction BOOLEAN := false; + +BEGIN + -- Cascade transaction flag is set to true to prevent creation of + -- the audit entries for the options when the options are + -- created as part of the parent object creation or update. + -- For example: when the option is added as part of the subnet + -- addition, the cascade transaction flag is equal to true. If + -- the option is added into the existing subnet the cascade + -- transaction is equal to false. Note that depending on the option + -- scope the audit entry will contain the object_type value + -- of the parent object to cause the server to replace the + -- entire subnet. The only case when the object_type will be + -- set to 'dhcp6_options' is when a global option is added. + -- Global options do not have the owner. + cascade_transaction := get_session_boolean('kea.cascade_transaction'); + IF cascade_transaction = false THEN + -- todo: host manager hasn't been updated to use audit + -- mechanisms so ignore host specific options for now. + IF scope_id = 0 THEN + -- If a global option is added or modified, create audit + -- entry for the 'dhcp6_options' table. + PERFORM createAuditEntryDHCP6('dhcp6_options', option_id, modification_type); + ELSEIF scope_id = 1 THEN + -- If subnet specific option is added or modified, create + -- audit entry for the entire subnet, which indicates that + -- it should be treated as the subnet update. + PERFORM createAuditEntryDHCP6('dhcp6_subnet', subnet_id, 'update'); + ELSEIF scope_id = 4 THEN + -- If shared network specific option is added or modified, + -- create audit entry for the shared network which + -- indicates that it should be treated as the shared + -- network update. + SELECT id INTO snid FROM dhcp6_shared_network + WHERE name = network_name LIMIT 1; + PERFORM createAuditEntryDHCP6('dhcp6_shared_network', snid, 'update'); + ELSEIF scope_id = 5 THEN + -- If pool specific option is added or modified, create + -- audit entry for the subnet which this pool belongs to. + SELECT dhcp6_pool.subnet_id INTO sid FROM dhcp6_pool WHERE id = pool_id; + PERFORM createAuditEntryDHCP6('dhcp6_subnet', sid, 'update'); + ELSEIF scope_id = 6 THEN + -- If pd pool specific option is added or modified, create + -- audit entry for the subnet which this pd pool belongs to. + SELECT dhcp6_pd_pool.subnet_id INTO sid FROM dhcp6_pd_pool + WHERE id = pd_pool_id; + PERFORM createAuditEntryDHCP6('dhcp6_subnet', sid, 'update'); + END IF; + END IF; + RETURN; +END;\$\$; + +-- Trigger function for dhcp6_options_AINS called AFTER INSERT on dhcp6_options +CREATE OR REPLACE FUNCTION func_dhcp6_options_AINS() RETURNS TRIGGER AS \$dhcp6_options_AINS\$ +BEGIN + PERFORM createOptionAuditDHCP6('create', NEW.scope_id, NEW.option_id, NEW.dhcp6_subnet_id, + NEW.host_id, NEW.shared_network_name, NEW.pool_id, + NEW.pd_pool_id, NEW.modification_ts); + RETURN NULL; +END; +\$dhcp6_options_AINS\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp6_options_AINS + AFTER INSERT ON dhcp6_options + FOR EACH ROW EXECUTE PROCEDURE func_dhcp6_options_AINS(); + +-- Trigger function for dhcp6_options_AUPD called AFTER UPDATE on dhcp6_options +CREATE OR REPLACE FUNCTION func_dhcp6_options_AUPD() RETURNS TRIGGER AS \$dhcp6_options_AUPD\$ +BEGIN + PERFORM createOptionAuditDHCP6('update', NEW.scope_id, NEW.option_id, NEW.dhcp6_subnet_id, + NEW.host_id, NEW.shared_network_name, NEW.pool_id, + NEW.pd_pool_id, NEW.modification_ts); + RETURN NULL; +END; +\$dhcp6_options_AUPD\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp6_options_AUPD + AFTER UPDATE ON dhcp6_options + FOR EACH ROW EXECUTE PROCEDURE func_dhcp6_options_AUPD(); + + +-- Trigger function for dhcp6_options_ADEL called AFTER DELETE on dhcp6_options +CREATE OR REPLACE FUNCTION func_dhcp6_options_ADEL() RETURNS TRIGGER AS \$dhcp6_options_ADEL\$ +BEGIN + PERFORM createOptionAuditDHCP6('delete', OLD.scope_id, OLD.option_id, OLD.dhcp6_subnet_id, + OLD.host_id, OLD.shared_network_name, OLD.pool_id, + OLD.pd_pool_id, NOW()); + RETURN NULL; +END; +\$dhcp6_options_ADEL\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp6_options_ADEL + AFTER DELETE ON dhcp6_options + FOR EACH ROW EXECUTE PROCEDURE func_dhcp6_options_ADEL(); + + +-- Trigger function for dhcp4_server_AINS called AFTER INSERT on dhcp4_server +CREATE OR REPLACE FUNCTION func_dhcp4_server_AINS() RETURNS TRIGGER AS \$dhcp4_server_AINS\$ +BEGIN + PERFORM createAuditEntryDHCP4('dhcp4_server', NEW.id, 'create'); + RETURN NULL; +END; +\$dhcp4_server_AINS\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp4_server_AINS + AFTER INSERT ON dhcp4_server + FOR EACH ROW EXECUTE PROCEDURE func_dhcp4_server_AINS(); + + +-- Trigger function for dhcp4_server_AUPD called AFTER UPDATE on dhcp4_server +CREATE OR REPLACE FUNCTION func_dhcp4_server_AUPD() RETURNS TRIGGER AS \$dhcp4_server_AUPD\$ +BEGIN + PERFORM createAuditEntryDHCP4('dhcp4_server', NEW.id, 'update'); + RETURN NULL; +END; +\$dhcp4_server_AUPD\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp4_server_AUPD + AFTER UPDATE ON dhcp4_server + FOR EACH ROW EXECUTE PROCEDURE func_dhcp4_server_AUPD(); + + +-- Trigger function for dhcp4_server_ADEL called AFTER DELETE on dhcp4_server +CREATE OR REPLACE FUNCTION func_dhcp4_server_ADEL() RETURNS TRIGGER AS \$dhcp4_server_ADEL\$ +BEGIN + PERFORM createAuditEntryDHCP4('dhcp4_server', OLD.id, 'delete'); + RETURN NULL; +END; +\$dhcp4_server_ADEL\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp4_server_ADEL + AFTER DELETE ON dhcp4_server + FOR EACH ROW EXECUTE PROCEDURE func_dhcp4_server_ADEL(); + + +-- Trigger function for dhcp6_server_AINS called AFTER INSERT on dhcp6_server +CREATE OR REPLACE FUNCTION func_dhcp6_server_AINS() RETURNS TRIGGER AS \$dhcp6_server_AINS\$ +BEGIN + PERFORM createAuditEntryDHCP6('dhcp6_server', NEW.id, 'create'); + RETURN NULL; +END; +\$dhcp6_server_AINS\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp6_server_AINS + AFTER INSERT ON dhcp6_server + FOR EACH ROW EXECUTE PROCEDURE func_dhcp6_server_AINS(); + + +-- Trigger function for dhcp6_server_AUPD called AFTER UPDATE on dhcp6_server +CREATE OR REPLACE FUNCTION func_dhcp6_server_AUPD() RETURNS TRIGGER AS \$dhcp6_server_AUPD\$ +BEGIN + PERFORM createAuditEntryDHCP6('dhcp6_server', NEW.id, 'update'); + RETURN NULL; +END; +\$dhcp6_server_AUPD\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp6_server_AUPD + AFTER UPDATE ON dhcp6_server + FOR EACH ROW EXECUTE PROCEDURE func_dhcp6_server_AUPD(); + + +-- Trigger function for dhcp6_server_ADEL called AFTER DELETE on dhcp6_server +CREATE OR REPLACE FUNCTION func_dhcp6_server_ADEL() RETURNS TRIGGER AS \$dhcp6_server_ADEL\$ +BEGIN + PERFORM createAuditEntryDHCP6('dhcp6_server', OLD.id, 'delete'); + RETURN NULL; +END; +\$dhcp6_server_ADEL\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp6_server_ADEL + AFTER DELETE ON dhcp6_server + FOR EACH ROW EXECUTE PROCEDURE func_dhcp6_server_ADEL(); + + +-- Trigger function for dhcp4_shared_network_BDEL called BEFORE DELETE on dhcp4_shared_network +CREATE OR REPLACE FUNCTION func_dhcp4_shared_network_BDEL() RETURNS TRIGGER AS \$dhcp4_shared_network_BDEL\$ +BEGIN + PERFORM createAuditEntryDHCP4('dhcp4_shared_network', OLD.id, 'delete'); + DELETE FROM dhcp4_options WHERE shared_network_name = OLD.name; + RETURN OLD; +END; +\$dhcp4_shared_network_BDEL\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp4_shared_network_BDEL + BEFORE DELETE ON dhcp4_shared_network + FOR EACH ROW EXECUTE PROCEDURE func_dhcp4_shared_network_BDEL(); + +-- Trigger function for dhcp4_subnet_BDEL called BEFORE DELETE on dhcp4_subnet +CREATE OR REPLACE FUNCTION func_dhcp4_subnet_BDEL() RETURNS TRIGGER AS \$dhcp4_subnet_BDEL\$ +BEGIN + PERFORM createAuditEntryDHCP4('dhcp4_subnet', OLD.subnet_id, 'delete'); + DELETE FROM dhcp4_pool WHERE subnet_id = OLD.subnet_id; + DELETE FROM dhcp4_options WHERE dhcp4_subnet_id = OLD.subnet_id; + RETURN OLD; +END; +\$dhcp4_subnet_BDEL\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp4_subnet_BDEL + BEFORE DELETE ON dhcp4_subnet + FOR EACH ROW EXECUTE PROCEDURE func_dhcp4_subnet_BDEL(); + +-- Trigger function for dhcp6_shared_network_BDEL called BEFORE DELETE on dhcp6_shared_network +CREATE OR REPLACE FUNCTION func_dhcp6_shared_network_BDEL() RETURNS TRIGGER AS \$dhcp6_shared_network_BDEL\$ +BEGIN + PERFORM createAuditEntryDHCP6('dhcp6_shared_network', OLD.id, 'delete'); + DELETE FROM dhcp6_options WHERE shared_network_name = OLD.name; + RETURN OLD; +END; +\$dhcp6_shared_network_BDEL\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp6_shared_network_BDEL + BEFORE DELETE ON dhcp6_shared_network + FOR EACH ROW EXECUTE PROCEDURE func_dhcp6_shared_network_BDEL(); + +-- Trigger function for dhcp6_subnet_BDEL called BEFORE DELETE on dhcp6_subnet +CREATE OR REPLACE FUNCTION func_dhcp6_subnet_BDEL() RETURNS TRIGGER AS \$dhcp6_subnet_BDEL\$ +BEGIN + PERFORM createAuditEntryDHCP6('dhcp6_subnet', OLD.subnet_id, 'delete'); + DELETE FROM dhcp6_pool WHERE subnet_id = OLD.subnet_id; + DELETE FROM dhcp6_pd_pool WHERE subnet_id = OLD.subnet_id; + DELETE FROM dhcp6_options WHERE dhcp6_subnet_id = OLD.subnet_id; + RETURN OLD; +END; +\$dhcp6_subnet_BDEL\$ +LANGUAGE plpgsql; + +CREATE TRIGGER dhcp6_subnet_BDEL + BEFORE DELETE ON dhcp6_subnet + FOR EACH ROW EXECUTE PROCEDURE func_dhcp6_subnet_BDEL(); + +-- Trigger function for dhcp6_pd_pool_BDEL called BEFORE DELETE on dhcp6_pd_pool +CREATE OR REPLACE FUNCTION func_dhcp6_pd_pool_BDEL() RETURNS TRIGGER AS \$dhcp6_pd_pool_BDEL\$ +BEGIN + DELETE FROM dhcp6_options WHERE scope_id = 6 AND pd_pool_id = OLD.id; + RETURN OLD; +END; +\$dhcp6_pd_pool_BDEL\$ +LANGUAGE plpgsql; + +-- Update the schema version number +UPDATE schema_version + SET version = '7', minor = '0'; + +-- Schema 7.0 specification ends here. + +-- Commit the script transaction +COMMIT; + +EOF |