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Nathan Nguyen
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Nov 19, 2024
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,87 @@ | ||
| <?php | ||
| // This file is part of Moodle - http://moodle.org/ | ||
| // | ||
| // Moodle is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU General Public License as published by | ||
| // the Free Software Foundation, either version 3 of the License, or | ||
| // (at your option) any later version. | ||
| // | ||
| // Moodle is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| // GNU General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU General Public License | ||
| // along with Moodle. If not, see <http://www.gnu.org/licenses/>. | ||
|
|
||
| /** | ||
| * Admin setting for AWS regions. | ||
| * | ||
| * @package tool_cloudmetrics | ||
| * @author Dmitrii Metelkin <[email protected]> | ||
| * @copyright 2020 Catalyst IT | ||
| * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later | ||
| */ | ||
|
|
||
| namespace tool_cloudmetrics; | ||
|
|
||
| defined('MOODLE_INTERNAL') || die(); | ||
|
|
||
| require_once($CFG->dirroot . '/lib/adminlib.php'); | ||
|
|
||
| /** | ||
| * Admin setting for a list of AWS regions. | ||
| * | ||
| * @package tool_cloudmetrics | ||
| * @copyright 2020 Catalyst IT | ||
| * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later | ||
| */ | ||
| class admin_settings_aws_region extends \admin_setting_configtext { | ||
|
|
||
| /** | ||
| * Return part of form with setting. | ||
| * | ||
| * @param mixed $data array or string depending on setting | ||
| * @param string $query | ||
| * @return string | ||
| */ | ||
| public function output_html($data, $query='') { | ||
| global $CFG; | ||
|
|
||
| $default = $this->get_defaultsetting(); | ||
|
|
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| $options = []; | ||
|
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| $all = require($CFG->dirroot . '/lib/aws-sdk/src/data/endpoints.json.php'); | ||
| $ends = $all['partitions'][0]['regions']; | ||
| if ($ends) { | ||
| foreach ($ends as $key => $value) { | ||
| $options[] = [ | ||
| 'value' => $key, | ||
| 'label' => $key . ' - ' . $value['description'], | ||
| ]; | ||
| } | ||
| } | ||
|
|
||
| $inputparams = array( | ||
| 'type' => 'text', | ||
| 'list' => $this->get_full_name(), | ||
| 'name' => $this->get_full_name(), | ||
| 'value' => $data, | ||
| 'size' => $this->size, | ||
| 'id' => $this->get_id(), | ||
| 'class' => 'form-control text-ltr', | ||
| ); | ||
|
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| $element = \html_writer::start_tag('div', array('class' => 'form-text defaultsnext')); | ||
| $element .= \html_writer::empty_tag('input', $inputparams); | ||
| $element .= \html_writer::start_tag('datalist', array('id' => $this->get_full_name())); | ||
| foreach ($options as $option) { | ||
| $element .= \html_writer::tag('option', $option['label'], array('value' => $option['value'])); | ||
| } | ||
| $element .= \html_writer::end_tag('datalist'); | ||
| $element .= \html_writer::end_tag('div'); | ||
|
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| return format_admin_setting($this, $this->visiblename, $element, $this->description, true, '', $default, $query); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,100 @@ | ||
| <?php | ||
| // This file is part of Moodle - http://moodle.org/ | ||
| // | ||
| // Moodle is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU General Public License as published by | ||
| // the Free Software Foundation, either version 3 of the License, or | ||
| // (at your option) any later version. | ||
| // | ||
| // Moodle is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| // GNU General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU General Public License | ||
| // along with Moodle. If not, see <http://www.gnu.org/licenses/>. | ||
|
|
||
| /** | ||
| * AWS helper class. Contains useful functions when interacting with the SDK. | ||
| * | ||
| * @package tool_cloudmetrics | ||
| * @author Peter Burnett <[email protected]> | ||
| * @copyright 2020 Catalyst IT | ||
| * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later | ||
| */ | ||
|
|
||
| namespace tool_cloudmetrics; | ||
|
|
||
| use Aws\CommandInterface; | ||
| use Aws\AwsClient; | ||
| use Psr\Http\Message\RequestInterface; | ||
|
|
||
| /** | ||
| * This class contains functions that help plugins to interact with the AWS SDK. | ||
| * | ||
| * @copyright 2020 Catalyst IT | ||
| * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later | ||
| */ | ||
| class aws_helper { | ||
|
|
||
| /** | ||
| * This creates a proxy string suitable for use with the AWS SDK. | ||
| * | ||
| * @return string the string to use for proxy settings. | ||
| */ | ||
| public static function get_proxy_string() { | ||
| global $CFG; | ||
| $proxy = ''; | ||
| if (empty($CFG->proxytype)) { | ||
| return $proxy; | ||
| } | ||
| if ($CFG->proxytype === 'SOCKS5') { | ||
| // If it is a SOCKS proxy, append the protocol info. | ||
| $protocol = 'socks5://'; | ||
| } else { | ||
| $protocol = ''; | ||
| } | ||
| if (!empty($CFG->proxyhost)) { | ||
| $proxy = $CFG->proxyhost; | ||
| if (!empty($CFG->proxyport)) { | ||
| $proxy .= ':'. $CFG->proxyport; | ||
| } | ||
| if (!empty($CFG->proxyuser) && !empty($CFG->proxypassword)) { | ||
| $proxy = $protocol . $CFG->proxyuser . ':' . $CFG->proxypassword . '@' . $proxy; | ||
| } | ||
| } | ||
| return $proxy; | ||
| } | ||
|
|
||
| /** | ||
| * Configure the provided AWS client to route traffic via the moodle proxy for any hosts not excluded. | ||
| * | ||
| * @param AwsClient $client | ||
| * @return AwsClient | ||
| */ | ||
| public static function configure_client_proxy(AwsClient $client): AwsClient { | ||
| $client->getHandlerList()->appendBuild(self::add_proxy_when_required(), 'proxy_bypass'); | ||
| return $client; | ||
| } | ||
|
|
||
| /** | ||
| * Generate a middleware higher order function to wrap the handler and append proxy configuration based on target. | ||
| * | ||
| * @return callable Middleware high order callable. | ||
| */ | ||
| protected static function add_proxy_when_required(): callable { | ||
| return function (callable $fn) { | ||
| return function (CommandInterface $command, ?RequestInterface $request = null) use ($fn) { | ||
| if (isset($request)) { | ||
| $target = (string) $request->getUri(); | ||
| if (!is_proxybypass($target)) { | ||
| $command['@http']['proxy'] = self::get_proxy_string(); | ||
| } | ||
| } | ||
|
|
||
| $promise = $fn($command, $request); | ||
| return $promise; | ||
| }; | ||
| }; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,62 @@ | ||
| <?php | ||
| // This file is part of Moodle - http://moodle.org/ | ||
| // | ||
| // Moodle is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU General Public License as published by | ||
| // the Free Software Foundation, either version 3 of the License, or | ||
| // (at your option) any later version. | ||
| // | ||
| // Moodle is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| // GNU General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU General Public License | ||
| // along with Moodle. If not, see <http://www.gnu.org/licenses/>. | ||
|
|
||
| /** | ||
| * AWS Client factory. Retrieves a client with moodle specific HTTP configuration. | ||
| * | ||
| * @package tool_cloudmetrics | ||
| * @author Peter Burnett <[email protected]> | ||
| * @copyright 2022 Catalyst IT | ||
| * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later | ||
| */ | ||
|
|
||
| namespace tool_cloudmetrics; | ||
| use \Aws\AwsClient; | ||
|
|
||
| /** | ||
| * AWS Client factory. Retrieves a client with moodle specific HTTP configuration. | ||
| * | ||
| * @copyright 2022 Catalyst IT | ||
| * @author Peter Burnett <[email protected]> | ||
| * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later | ||
| */ | ||
| class client_factory { | ||
| /** | ||
| * Get an AWS client with moodle specific HTTP configuration. | ||
| * | ||
| * @param string $class Fully qualified AWS classname e.g. \Aws\S3\S3Client | ||
| * @param array $opts array of constructor options for AWS Client. | ||
| * @return AwsClient | ||
| */ | ||
| public static function get_client(string $class, array $opts): AwsClient { | ||
| // Modify the opts to add HTTP timeouts. | ||
| if (empty($opts['http'])) { | ||
| $opts['http'] = ['connect_timeout' => HOURSECS]; | ||
| } else if (is_array($opts['http'] && !array_key_exists('connect_timeout', $opts['http']))) { | ||
| // Try not to override existing settings. | ||
| $opts['http']['connect_timeout'] = HOURSECS; | ||
| } | ||
|
|
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| // Blindly trust the call here. If it exceptions, the raw message is the most useful. | ||
| $client = new $class($opts); | ||
| if (!$client instanceof \Aws\AwsClient) { | ||
| throw new \moodle_exception('clientnotfound', 'tool_cloudmetrics'); | ||
| } | ||
|
|
||
| // Now we can configure the proxy with the routing aware middleware. | ||
| return aws_helper::configure_client_proxy($client); | ||
| } | ||
| } |
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