133 lines
4.5 KiB
PHP
133 lines
4.5 KiB
PHP
<?php
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/** This class provides the business logic for station provisioning. */
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class ProvisioningHelper
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{
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/* @var $dbh PDO */
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static $dbh;
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// Parameter values
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private $dbuser, $dbpass, $dbname, $dbhost, $dbowner, $apikey;
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public function __construct($apikey)
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{
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$this->apikey = $apikey;
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}
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/**
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* Endpoint for setting up and installing the Airtime database. This all has to be done without Zend
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* which is why the code looks so old school (eg. http_response_code). (We can't currently bootstrap our
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* Zend app without the database unfortunately.)
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*/
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public function createAction()
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{
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$apikey = $_SERVER['PHP_AUTH_USER'];
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if (!isset($apikey) || $apikey != $this->apikey) {
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Logging::info("Invalid API Key: $apikey");
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http_response_code(403);
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echo "ERROR: Incorrect API key";
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return;
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}
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try {
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$this->parsePostParams();
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//For security, the Airtime Pro provisioning system creates the database for the user.
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// $this->setNewDatabaseConnection();
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//if ($this->checkDatabaseExists()) {
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// throw new Exception("ERROR: Airtime database already exists");
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//}
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//$this->createDatabase();
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//All we need to do is create the database tables.
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$this->createDatabaseTables();
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} catch (Exception $e) {
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http_response_code(400);
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Logging::error($e->getMessage());
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echo $e->getMessage();
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return;
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}
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http_response_code(201);
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}
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/**
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* Check if the database settings and credentials given are valid
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* @return boolean true if the database given exists and the user is valid and can access it
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*/
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private function checkDatabaseExists()
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{
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$statement = self::$dbh->prepare("SELECT datname FROM pg_database WHERE datname = :dbname");
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$statement->execute(array(":dbname" => $this->dbname));
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$result = $statement->fetch();
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return isset($result[0]);
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}
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private function parsePostParams()
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{
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$this->dbuser = $_POST['dbuser'];
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$this->dbpass = $_POST['dbpass'];
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$this->dbname = $_POST['dbname'];
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$this->dbhost = $_POST['dbhost'];
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$this->dbowner = $_POST['dbowner'];
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}
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/**
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* Set up a new database connection based on the parameters in the request
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* @throws PDOException upon failure to connect
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*/
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private function setNewDatabaseConnection()
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{
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self::$dbh = new PDO("pgsql:host=" . $this->dbhost
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. ";dbname=postgres"
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. ";port=5432" . ";user=" . $this->dbuser
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. ";password=" . $this->dbpass);
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$err = self::$dbh->errorInfo();
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if ($err[1] != null) {
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throw new PDOException("ERROR: Could not connect to database");
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}
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}
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/**
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* Creates the Airtime database using the given credentials
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* @throws Exception
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*/
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private function createDatabase()
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{
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Logging::info("Creating database...");
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$statement = self::$dbh->prepare("CREATE DATABASE " . pg_escape_string($this->dbname)
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. " WITH ENCODING 'UTF8' TEMPLATE template0"
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. " OWNER " . pg_escape_string($this->dbowner));
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if (!$statement->execute()) {
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throw new Exception("ERROR: Failed to create Airtime database");
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}
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}
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/**
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* Install the Airtime database
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* @throws Exception
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*/
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private function createDatabaseTables()
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{
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Logging::info("Creating database tables...");
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$sqlDir = dirname(APPLICATION_PATH) . "/build/sql/";
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$files = array("schema.sql", "sequences.sql", "views.sql", "triggers.sql", "defaultdata.sql");
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foreach ($files as $f) {
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/*
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* Unfortunately, we need to use exec here due to PDO's lack of support for importing
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* multi-line .sql files. PDO->exec() almost works, but any SQL errors stop the import,
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* so the necessary DROPs on non-existent tables make it unusable. Prepared statements
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* have multiple issues; they similarly die on any SQL errors, fail to read in multi-line
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* commands, and fail on any unescaped ? or $ characters.
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*/
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exec("PGPASSWORD=$this->dbpass psql -U $this->dbuser --dbname $this->dbname -h $this->dbhost -f $sqlDir$f", $out, $status);
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if ($status != 0) {
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throw new Exception("ERROR: Failed to create database tables");
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}
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}
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}
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}
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