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@sleepm
sleepm committed Dec 23, 2019
1 parent 8f53b21 commit 3848661
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324 changes: 324 additions & 0 deletions class-wp-proxy.php
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<?php
/**
* WP_Proxy
*
* @package wp-proxy
*/

if ( ! defined( 'ABSPATH' ) ) {
exit;
}

/**
* WP_Proxy class
*/
class WP_Proxy {
/**
* The single instance of the class
*
* @var wp_proxy
*/
protected static $instance = null;

/**
* The proxy options
*
* @var wp_proxy_option
*/
protected $options = array();

/**
* WP_Proxy Construct
*
* @var wp_proxy
*/
public function __construct() {
$this->load_plugin_textdomain();
$options = get_option( 'wp_proxy_options' );
if ( $options ) {
$this->options = $options;
if ( $options['enable'] ) {
add_filter( 'pre_http_send_through_proxy', array( $this, 'send_through_proxy' ), 10, 4 );
defined( 'WP_PROXY_HOST' ) ? '' : define( 'WP_PROXY_HOST', $options['proxy_host'] );
defined( 'WP_PROXY_PORT' ) ? '' : define( 'WP_PROXY_PORT', $options['proxy_port'] );
if ( ! empty( $options['username'] ) ) {
defined( 'WP_PROXY_USERNAME' ) ? '' : define( 'WP_PROXY_USERNAME', $options['username'] );
}
if ( ! empty( $options['password'] ) ) {
defined( 'WP_PROXY_PASSWORD' ) ? '' : define( 'WP_PROXY_PASSWORD', $options['password'] );
}
}
} else {
add_option( 'wp_proxy_options', $this->defualt_options() );
}
add_action( 'admin_menu', array( $this, 'options_page' ) );
add_action( 'admin_init', array( $this, 'register_settings' ) );
}

/**
* Main WP_Proxy Instance
*
* @since 1.0
*/
public static function instance() {
if ( is_null( self::$instance ) ) {
self::$instance = new self();
}
return self::$instance;
}

/**
* I18n
*
* @since 1.0
*/
protected function load_plugin_textdomain() {
$locale = is_admin() && function_exists( 'get_user_locale' ) ? get_user_locale() : get_locale();
$locale = apply_filters( 'plugin_locale', $locale, 'wp-proxy' );

load_plugin_textdomain( 'wp-proxy', false, plugin_basename( dirname( __FILE__ ) ) . '/languages' );
}

/**
* Default options
*
* @since 1.0
*/
protected function defualt_options() {
$options = array();
$options['domains'] = '*.wordpress.org';
$options['proxy_host'] = '127.0.0.1';
$options['proxy_port'] = '1080';
$options['username'] = '';
$options['password'] = '';
$options['enable'] = false;
return $options;
}

/**
* Add options page, update options
*
* @since 1.0
*/
public function options_page() {
add_options_page( 'WP Proxy', esc_html__( 'WP Proxy', 'wp-proxy' ), 'manage_options', 'wp_proxy', array( $this, 'wp_proxy_option' ) );
if ( isset( $_POST['option_page'] ) && 'wp_proxy' === sanitize_text_field( wp_unslash( $_POST['option_page'] ) ) && isset( $_POST['_wpnonce'] ) ) {
if ( wp_verify_nonce( sanitize_text_field( wp_unslash( $_POST['_wpnonce'] ) ), 'wp_proxy-options' ) ) {
if ( isset( $_POST['proxy_host'] ) ) {
$wp_proxy_options['proxy_host'] = sanitize_text_field( wp_unslash( $_POST['proxy_host'] ) );
}
if ( isset( $_POST['proxy_port'] ) ) {
$port = abs( sanitize_text_field( wp_unslash( $_POST['proxy_port'] ) ) );
if ( 0 === $port || 65535 < $port ) {
add_settings_error( 'wp_proxy', 500, esc_html__( 'Wrong port', 'wp-proxy' ), 'error' );
$wp_proxy_options['proxy_port'] = $this->options['proxy_port'];
} else {
$wp_proxy_options['proxy_port'] = intval( wp_unslash( $_POST['proxy_port'] ) );
}
}
if ( isset( $_POST['username'] ) ) {
$wp_proxy_options['username'] = sanitize_text_field( wp_unslash( $_POST['username'] ) );
}
if ( isset( $_POST['password'] ) ) {
$wp_proxy_options['password'] = sanitize_text_field( wp_unslash( $_POST['password'] ) );
}
if ( isset( $_POST['domains'] ) ) {
$wp_proxy_options['domains'] = str_replace( ' ', "\n", sanitize_text_field( wp_unslash( $_POST['domains'] ) ) );
}
if ( isset( $_POST['enable'] ) ) {
if ( 'yes' === sanitize_text_field( wp_unslash( $_POST['enable'] ) ) ) {
$wp_proxy_options['enable'] = true;
} else {
$wp_proxy_options['enable'] = false;
}
}
update_option( 'wp_proxy_options', $wp_proxy_options );
$this->options = get_option( 'wp_proxy_options' );
}
}
}

/**
* Check URL
*
* @param string $null null.
* @param string $url url.
* @param bool $check check result.
* @param string $home site home.
* @since 1.0
*/
public function send_through_proxy( $null, $url, $check, $home ) {
$rules = explode( '\n', $this->options['domains'] );
$host = false;
if ( ! is_array( $check ) ) {
$check = wp_parse_url( $check );
}
if ( isset( $check['host'] ) ) {
$host = $check['host'];
}
foreach ( $rules as $rule ) {
$rule = str_replace( '*.', '(.*)\.', $rule );
if ( $rule === $host ) {
return true;
} elseif ( preg_match( '#' . $rule . '#i', $host ) ) {
return true;
}
}
return false;
}

/**
* Settings
*
* @since 1.0
*/
public function register_settings() {
register_setting( 'wp_proxy', 'proxy_config' );
add_settings_section(
'wp_proxy_config',
'',
array(),
'wp_proxy'
);
add_settings_field(
'proxy_host',
esc_html__( 'Proxy Host', 'wp-proxy' ),
array( $this, 'proxy_host_callback' ),
'wp_proxy',
'wp_proxy_config'
);
add_settings_field(
'proxy_port',
esc_html__( 'Proxy Port', 'wp-proxy' ),
array( $this, 'proxy_port_callback' ),
'wp_proxy',
'wp_proxy_config'
);
add_settings_field(
'Username',
esc_html__( 'Proxy Username', 'wp-proxy' ),
array( $this, 'proxy_username_callback' ),
'wp_proxy',
'wp_proxy_config'
);
add_settings_field(
'password',
esc_html__( 'Proxy Password', 'wp-proxy' ),
array( $this, 'proxy_password_callback' ),
'wp_proxy',
'wp_proxy_config'
);
add_settings_field(
'domains',
esc_html__( 'Proxy Domains', 'wp-proxy' ),
array( $this, 'proxy_domains_callback' ),
'wp_proxy',
'wp_proxy_config'
);
add_settings_field(
'enable',
esc_html__( 'Enable', 'wp-proxy' ),
array( $this, 'proxy_enable_callback' ),
'wp_proxy',
'wp_proxy_config'
);
}

/**
* Show options
*
* @since 1.0
*/
public function wp_proxy_option() {
$wp_proxy_options = get_option( 'wp_proxy_options', $this->defualt_options() );
$this->options = $wp_proxy_options; ?>
<div class="wrap">
<h1><?php esc_html_e( 'WP Proxy', 'wp-proxy' ); ?></h1>
<form action="options.php" method="post" autocomplete="off">
<?php
settings_fields( 'wp_proxy' );
do_settings_sections( 'wp_proxy' );
?>
<?php
submit_button();
?>
</form>
</div>

<?php
}

/**
* Show proxy host field
*
* @since 1.0
*/
public function proxy_host_callback() {
?>
<input id="proxy_host" name="proxy_host" type="text" placeholder="<?php esc_html_e( 'proxy host', 'wp-proxy' ); ?>" value="<?php echo esc_html( $this->options['proxy_host'] ); ?>" autocomplete="off">
<?php
}

/**
* Show proxy port field
*
* @since 1.0
*/
public function proxy_port_callback() {
?>
<input id="proxy_port" name="proxy_port" type="number" placeholder="<?php esc_html_e( 'proxy port', 'wp-proxy' ); ?>" value="<?php echo esc_html( $this->options['proxy_port'] ); ?>" autocomplete="off">
<?php
}

/**
* Show proxy username field
*
* @since 1.0
*/
public function proxy_username_callback() {
?>
<input id="username" name="username" type="text" placeholder="<?php esc_html_e( 'username', 'wp-proxy' ); ?>" value="<?php echo esc_html( $this->options['username'] ); ?>" autocomplete="off">
<?php
}

/**
* Show proxy password field
*
* @since 1.0
*/
public function proxy_password_callback() {
?>
<input id="password" name="password" type="password" placeholder="<?php esc_html_e( 'password', 'wp-proxy' ); ?>" value="<?php echo esc_html( $this->options['password'] ); ?>" autocomplete="off">
<?php
}

/**
* Show domains field
*
* @since 1.0
*/
public function proxy_domains_callback() {
?>
<textarea name="domains" id="domains" cols="40" rows="5" autocomplete="off"><?php echo esc_attr( $this->options['domains'] ); ?></textarea>
<?php
}

/**
* Show proxy enable field
*
* @since 1.0
*/
public function proxy_enable_callback() {
?>
<select name="enable" id="enable">
<?php if ( $this->options['enable'] ) { ?>
<option value="yes" selected="selected"><?php esc_html_e( 'yes', 'wp-proxy' ); ?></option>
<option value="no"><?php esc_html_e( 'no', 'wp-proxy' ); ?></option>
<?php } else { ?>
<option value="yes"><?php esc_html_e( 'yes', 'wp-proxy' ); ?></option>
<option value="no" selected="selected"><?php esc_html_e( 'no', 'wp-proxy' ); ?></option>
<?php } ?>
</select>
<?php
}
}
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