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smartdocs_oauth_additions.module
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smartdocs_oauth_additions.module
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<?php
/**
* On SmartDocs pages add the logic for Oauth Client Credentials Grant
*
* This module is a hack to allow SmartDocs to create a widget for Client Credential Grants
*
* The Edge backend cannot process this information.
*
* @param $vars
*/
function smartdocs_oauth_additions_preprocess_page(&$vars){
$item = menu_get_item();
if($item['map'][0] == 'node' && $item['map'][1]->type == 'smart_method'){
$oauth_schemes = array();
$scopes = array();
$config = devconnect_default_org_config();
$node = $item['map'][1];
// Try to load the model taxonomy term.
if (!empty($node->field_smart_method_model[LANGUAGE_NONE][0]['taxonomy_term'])) {
$model_term = &$node->field_smart_method_model[LANGUAGE_NONE][0]['taxonomy_term'];
}
elseif (!empty($node->field_smart_method_model[LANGUAGE_NONE][0]['tid'])) {
$model_term = taxonomy_term_load($node->field_smart_method_model[LANGUAGE_NONE][0]['tid']);
}
if (!empty($model_term)) {
$security = new \Apigee\SmartDocs\Security($config, $model_term->name, $node->field_smart_method_revision_num[LANGUAGE_NONE][0]['value']);
foreach($node->field_smart_method_security[LANGUAGE_NONE] as $row){
$scheme = $security->load($row['value']);
if($scheme instanceof \Apigee\SmartDocs\Security\Oauth2Scheme) {
$accessTokenUrl = drupal_parse_url($scheme->getAccessTokenUrl());
$oauth_schemes[$row['value']] = $accessTokenUrl['query']['grant_type'];
foreach($scheme->getScopes() as $key=>$desc) {
$scopes[$key] = $key;
}
}
}
if(!empty($oauth_schemes)){
$form = drupal_get_form('smartdocs_oauth_additions_form', $node, $oauth_schemes, $scopes);
drupal_add_js(array('apigee_oauth_additions_form' => drupal_render($form)), 'setting');
drupal_add_library("system", "drupal.ajax");
drupal_add_js(drupal_get_path('module', 'smartdocs_oauth_additions') ."/smartdocs_oauth_additions.js");
}
}
}
}
/**
* Form to accept Username and password so that it we can generate the access token
*
* @param $form
* @param $form_state
* @param $node
* @param $oauth_schemes
* @return mixed
*/
function smartdocs_oauth_additions_form($form, $form_state, $node, $oauth_schemes, $scopes = array()){
if(empty($oauth_schemes)) {
return $form;
}
$options = array();
if (user_is_logged_in()) {
global $user;
$app_entities = entity_load('developer_app', FALSE, array('mail' => $user->mail));
array_walk($app_entities, function ($app) use (&$options, $api_products) {
// TODO Each Developer app status should be stored in constants on
// the Drupal side. Ex.: DEVELOPER_APP_STATUS_APPROVED.
if ($app->credentialStatus == 'approved' && !array_intersect($api_products, $app->apiProducts)) {
$options[$app->name] = $app->attributes['DisplayName'];
}
});
asort($options);
}
$form['user_app'] = array(
'#title' => 'API Key to use for the API call',
'#type' => 'select',
'#options' => array('default' => 'Default Credentials') + $options,
'#description' => 'Choose one of your apps to use. You can request an app to be created by clicking ' . l('here', 'user/me/apps'),
);
if(in_array('password', $oauth_schemes)){
$form['client_username'] = array(
'#title' => 'Username',
'#type' => 'textfield',
'#description' => 'Please enter the username',
);
$form['client_password'] = array(
'#title' => 'Password',
'#type' => 'password',
'#description' => 'Please enter the password',
);
}
$model_term = taxonomy_term_load($node->field_smart_method_model[LANGUAGE_NONE][0]['tid']);
$form['model'] = array(
'#type' => 'value',
'#value' => $model_term->name,
);
$form['revision'] = array(
'#type' => 'value',
'#value' => $node->field_smart_method_revision_num[LANGUAGE_NONE][0]['value'],
);
$form['security'] = array(
'#type' => 'value',
'#value' => $oauth_schemes,
);
$form['scopes'] = array(
'#type' => 'value',
'#value' => $scopes,
);
$form['submit'] = array(
'#type' => 'submit',
'#value' => t('Generate OAuth Token'),
'#ajax' => array(
'callback' => 'smartdocs_oauth_additions_form_generate_token',
)
);
$form['#attached']['js'][] = drupal_get_path('module', 'smartdocs_oauth_additions') . "/smartdocs_oauth_additions.js";
return $form;
}
/**
* Submit function to generate access token for the Oauth client Credentials
*
* @param $form
* @param $form_state
* @return array
*/
function smartdocs_oauth_additions_form_generate_token($form, $form_state){
$config = devconnect_default_org_config();
$security = new \Apigee\SmartDocs\Security($config, $form_state['values']['model'], $form_state['values']['revision']);
foreach($form_state['values']['security'] as $scheme_name => $grant_type) {
$scheme = $security->load($scheme_name);
if($scheme instanceof \Apigee\SmartDocs\Security\Oauth2Scheme) {
$template_auth = new \Apigee\SmartDocs\TemplateAuth($config, $form_state['values']['model']);
$template_auth_scheme = $template_auth->load($scheme_name);
if($template_auth_scheme instanceof \Apigee\SmartDocs\Security\Oauth2TemplateAuthScheme){
$oauth2Credentials = array();
$oauth2Credentials['ERRORCODE'] = '';
$oauth2Credentials['ERRORMESSAGE'] = '';
$oauth2Credentials['ACCESSTOKEN'] = '';
$oauth2Credentials['ACCESSTOKENTYPE'] = 'bearer';
$oauth2Credentials['ACCESSTOKENPARAMNAME'] = 'access_token';
$oauth2Credentials['PROXYURL'] = '';
$client_id = $template_auth_scheme->getClientId();
$client_secret = $template_auth_scheme->getClientSecret();
$postBody = array('grant_type' => $grant_type);
if(!empty($form_state['values']['scopes'])) {
$postBody['scope'] = reset($form_state['values']['scopes']);
}
if($form_state['values']['user_app'] !== 'default' && user_is_logged_in()){
global $user;
$entity = entity_load('developer_app',array(), array('mail' => $user->mail, 'name' => $form_state['values']['user_app']));
$entity = reset($entity);
$client_id = $entity->consumerKey;
$client_secret = $entity->consumerSecret;
}
if($grant_type == 'client_credentials') {
$client_config = array(
'request.options' =>
array(
'auth' => array(
$client_id,
$client_secret,
'basic',
)
)
);
} else if($grant_type == 'password') {
$postBody['client_id'] = $client_id;
$postBody['client_secret'] = $client_secret;
$client_config = array(
'request.options' => array(
'auth' => array(
$form_state['values']['client_username'],
$form_state['values']['client_password'],
'basic',
)
)
);
}
$client = new \Guzzle\Http\Client($scheme->getAccessTokenUrl(), $client_config);
$request = $client->post('' ,array('Content-Type' => 'application/x-www-form-urlencoded'), drupal_http_build_query($postBody));
try {
$response = $request->send();
$oauth_res = json_decode($response->getBody(true));
$oauth2Credentials['ACCESSTOKEN'] = $oauth_res->access_token;
}catch (\Guzzle\Http\Exception\BadResponseException $e) {
$response = $e->getResponse();
$error_res = json_decode($response->getBody(true));
watchdog(__FUNCTION__, $error_res);
$oauth2Credentials['ERRORCODE'] = $error_res->errorCode;
$oauth2Credentials['ERRORMESSAGE'] = $error_res->remediation ;
}catch(Exception $e){
watchdog(__FUNCTION__, $e->getCode() . ":" . $e->getMessage());
$oauth2Credentials['ERRORCODE'] = $e->getCode();
$oauth2Credentials['ERRORMESSAGE'] = $e->getMessage();
}
return array('#type' => 'ajax', '#commands' => array(
array('command'=>'setAccessTokenAndLocation', 'data' => $oauth2Credentials),
ajax_command_invoke('[data-dismiss="modal"]', 'click', array()),
));
}
}
}
return array('#type' => 'ajax', '#commands' => array(ajax_command_alert("Something went wrong !!")));
}
/**
* Add additional messages around the SmartDocs security settings form.
* @param $form
* @param $form_state
*/
function smartdocs_oauth_additions_form_smartdocs_model_security_scheme_alter(&$form, $form_state){
$message = <<<__STR__
You have smartdocs_oauth_additions module enabled.
You should pass the "grant_type" as a query parameter in the "Access token url" field.
This will let the module provide OAuth widgets.
__STR__;
drupal_set_message(t($message), "warning");
$form['#validate'][] = 'smartdocs_oauth_additions_form_smartdocs_model_security_scheme_validate';
}
/**
* Make the user enter the grant_type in the Access Token URL field.
* We have to do this since the backend doesn't support this options right now.
*
* @param $form
* @param $form_state
*/
function smartdocs_oauth_additions_form_smartdocs_model_security_scheme_validate($form, $form_state){
if(isset($form_state['values']['auth_fields']['accessTokenUrl'])) {
$accesstokenurl = drupal_parse_url($form_state['values']['auth_fields']['accessTokenUrl']);
if (!isset($accesstokenurl['query']['grant_type'])) {
form_set_error('values][auth_fields][accessTokenUrl', "grant_type is not set in the Access Token URL");
}
}
}