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+-- Central DB structure
+-- This is the central database stuff which is used across all datasets
+-- in the ledger-smb.conf it is called 'ledgersmb' by default, but obviously
+-- can be named anything.
+
+-- USERS stuff --
+CREATE TABLE users (id serial UNIQUE, username varchar(30) primary key);
+COMMENT ON TABLE users IS $$username is the actual primary key here because we do not want duplicate users$$;
+CREATE TABLE users_conf(id integer primary key references users(id) deferrable initially deferred,
+                        acs text,
+                        address text,
+                        businessnumber text,
+                        company text,
+                        countrycode text,
+                        currency text,
+                        dateformat text,
+                        dbconnect text,
+                        dbdriver text default 'Pg',
+                        dbhost text default 'localhost',
+                        dbname text,
+                        dboptions text,
+                        dbpasswd text,
+                        dbport text,
+                        dbuser text,
+                        email text,
+                        fax text,
+                        menuwidth text,
+                        name text,
+                        numberformat text,
+                        password varchar(32) check(length(password) = 32),
+                        print text,
+                        printer text,
+                        role text,
+                        sid text,
+                        signature text,
+                        stylesheet text,
+                        tel text,
+                        templates text,
+                        timeout numeric,
+                        vclimit numeric);
+
+COMMENT ON TABLE users_conf IS 'This is a completely dumb table that is a place holder to get usersconf into the database. Next major release will have a much more sane implementation';
+COMMENT ON COLUMN users_conf.id IS 'Yes primary key with a FOREIGN KEY to users(id) is correct'; 
+COMMENT ON COLUMN users_conf.password IS 'This means we have to get rid of the current password stuff and move to presumably md5()';
+
+-- Per conversation with ChrisM, if the admin user has a null password a couple of things happen.
+-- 1. It is implicit that this is an initial install
+-- 2. If the admin password does not match the ledger-smb.conf admin password, we throw a hijack alert
+-- The two below statements must be run from a single session
+INSERT INTO users(username) VALUES ('admin');
+INSERT INTO users_conf(id,password) VALUES (currval('users_id_seq'),NULL);
+
+
+CREATE OR REPLACE FUNCTION create_user(text) RETURNS bigint AS $$
+   INSERT INTO users(username) VALUES ($1);
+   SELECT currval('users_id_seq');
+   $$ LANGUAGE 'SQL';
+
+COMMENT ON FUNCTION create_user(text) IS $$ Function to create user. Returns users.id if successful, else it is an error. $$;
+
+CREATE OR REPLACE FUNCTION update_user(int4,text) RETURNS int4 AS $$
+   UPDATE users SET username = $2 WHERE id = $1;
+   SELECT 1;
+   $$ LANGUAGE 'SQL';
+
+COMMENT ON FUNCTION update_user(int4,text) IS $$ Takes int4 which is users.id and text which is username. Will update username based on id. Username is unique $$;
+
+
+-- Session tracking table
+
+
+CREATE TABLE session(
+session_id serial PRIMARY KEY,
+sl_login VARCHAR(50),
+token VARCHAR(32) CHECK(length(token) = 32),
+last_used TIMESTAMP default now(),
+users_id INTEGER  -- NOT NULL references users(id)
+);
+