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PHP HMAC Restful API that uses Phalcon Micro framework

The framework requires PHP 5.4+ (Could run on 5.3 if you replace 5.4 array syntax with the older php version)

Why do this? http://www.thebuzzmedia.com/designing-a-secure-rest-api-without-oauth-authentication/

PHP 5.4 or greater

Required PHP Modules

• OpenSSL
• Phalcon (http://phalconphp.com/en/download)
• PDO-MySQL

To check for those modules

$ php -m | egrep "(phalcon|pdo_mysql|openssl)"
phalcon
pdo_mysql
openssl

Open php-hmac-rest-api/app/config.php and setup your database connection credentials

$settings = array(
        'database' => array(
                'adapter' => 'Mysql', /* Possible Values: Mysql, Postgres, Sqlite */
                'host' => 'your_ip_or_hostname',
                'username' => 'your_username',
                'password' => 'your_password',
                'name' => 'your_database_schema',
                'port' => 3306
        ),
);

Import the tables into your mysql database

mysql -u root -p your_database_schema < php-hmac-rest-api/mysql.data.sql

Import the tables into your Postgres Server

psql -U root -W -f postgres.data.sql your_database_schema

Routes are stored in php-hmac-rest-api/app/config/routes.php as an array. A route has a method (HEAD, GET, POST, PATCH, DELETE, OPTIONS), uri (which can contain regular expressions) and handler/controller to point to.

$routes[] = [
        'method' => 'post',
        'route' => '/ping',
        'handler' => ['Controllers\ExampleController', 'pingAction']
];

$routes[] = [
        'method' => 'get',
        'route' => '/ping',
        'handler' => ['Controllers\ExampleController', 'pingAction']
];

// Example of a route with a parameter (id)
$routes[] = [
        'method' => 'get',
        'route' => '/test/{id}',
        'handler' => ['Controllers\ExampleController', 'testAction']
];

// Example of skipping HMAC authentication on a single page
$routes[] = [
        'method' => 'post',
        'route' => '/skip/{name}',
        'handler' => ['Controllers\ExampleController', 'skipAction'],
        'no-authentication' => FALSE
];

Note: For Routes with Paramters, make sure the action you map to has the proper parameters set (in order to read paramters correctly). http://docs.phalconphp.com/en/latest/reference/micro.html#defining-routes

PHP 5.3+

Required PHP Modules

• Curl (http://php.net/curl)

To check for that module

$ php -m | grep -i "curl"
curl

With PHP 5.4, you can use its builtin web server to quickly test functionality. Make sure to be in the public directory when executing the command below.

cd php-hmac-rest-api/public
php -S localhost:8000 ../.htrouter.php

Open php-hmac-rest-api/client-connect.php and make sure the host is pointed to the proper url.

When you're ready to test, go ahead and execute it (client application by default points to api.example.com)

cd php-hmac-rest-api
php client-connect.php

Note, if you're using PHP 5.4 built web server (example above) and on the same box, make sure you point the client to the proper server.

cd php-hmac-rest-api
php client-connect.php localhost:8000

Full Example with output from client app

php client-connect.php localhost:8000

Request: 
POST /ping HTTP/1.1
Host: localhost:8000
Accept: */*
API_ID: 1
API_TIME: 1378703314
API_HASH: de7cd08ab75120791396af887a8b6de7734b211dbe2d443286ed91848f916190
Content-Length: 142
Expect: 100-continue
Content-Type: multipart/form-data; boundary=----------------------------5d9301537cda


Response:
HTTP/1.1 200 OK
Host: localhost:8000
Connection: close
X-Powered-By: PHP/5.4.9-4ubuntu2.3
Content-type: text/html

pong

POST /ping HTTP/1.1
Host: api.example.com
Accept: */*
API_ID: 1
API_TIME: 1377469831
API_HASH: 4cd93cb01ae9a988fbe2922f4ccbc39276ea3626e6016cf80bba32a6447256c5
Content-Length: 143

HTTP/1.1 200 OK
Server: nginx
Date: Sun, 25 Aug 2013 22:27:26 GMT
Content-Type: text/html; charset=utf-8
Transfer-Encoding: chunked
Connection: keep-alive

pong