Code Coverage
 
Lines
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Classes and Traits
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 1
1<?php
2/**
3 * Class Jetpack_Post_By_Email
4 *
5 * @package automattic/jetpack
6 */
7
8use Automattic\Jetpack\Connection\Tokens;
9use Automattic\Jetpack\Redirect;
10
11/**
12 * Class Jetpack_Post_By_Email
13 */
14class Jetpack_Post_By_Email {
15    /**
16     * Initialize PBE.
17     *
18     * @return Jetpack_Post_By_Email
19     */
20    public static function init() {
21        static $instance = null;
22
23        if ( ! $instance ) {
24            $instance = new Jetpack_Post_By_Email();
25        }
26
27        return $instance;
28    }
29
30    /**
31     * Singleton
32     */
33    private function __construct() {
34        add_action( 'init', array( $this, 'action_init' ) );
35    }
36
37    /**
38     * Adds hooks for PBE.
39     */
40    public function action_init() {
41        if ( ! current_user_can( 'edit_posts' ) ) {
42            return;
43        }
44
45        add_action( 'profile_personal_options', array( $this, 'user_profile' ) );
46        add_action( 'admin_print_scripts-profile.php', array( $this, 'profile_scripts' ) );
47
48        add_action( 'wp_ajax_jetpack_post_by_email_enable', array( $this, 'create_post_by_email_address' ) );
49        add_action( 'wp_ajax_jetpack_post_by_email_regenerate', array( $this, 'regenerate_post_by_email_address' ) );
50        add_action( 'wp_ajax_jetpack_post_by_email_disable', array( $this, 'delete_post_by_email_address' ) );
51    }
52
53    /**
54     * Enqueues scripts for user profile page.
55     */
56    public function profile_scripts() {
57        wp_enqueue_script( 'post-by-email', plugins_url( 'post-by-email.js', __FILE__ ), array( 'jquery' ), JETPACK__VERSION, true );
58        wp_localize_script(
59            'post-by-email',
60            'pbeVars',
61            array(
62                'rest_nonce' => wp_create_nonce( 'wp_rest' ),
63            )
64        );
65        wp_enqueue_style( 'post-by-email', plugins_url( 'post-by-email.css', __FILE__ ), array(), JETPACK__VERSION );
66        // Inline styles. @see wp_maybe_inline_styles()
67        if ( is_rtl() ) {
68            wp_style_add_data( 'post-by-email', 'path', plugin_dir_path( __FILE__ ) . 'post-by-email-rtl.min.css' );
69        } else {
70            wp_style_add_data( 'post-by-email', 'path', plugin_dir_path( __FILE__ ) . 'post-by-email.min.css' );
71        }
72    }
73
74    /**
75     * Check if the user is connected.
76     *
77     * @return bool True if connected. False if not.
78     */
79    public function check_user_connection() {
80        $user_token = ( new Tokens() )->get_access_token( get_current_user_id() );
81
82        $is_user_connected = $user_token && ! is_wp_error( $user_token );
83
84        // If the user is already connected via Jetpack, then we're good.
85        if ( $is_user_connected ) {
86            return true;
87        }
88
89        return false;
90    }
91
92    /**
93     * Adds field to user profile page.
94     */
95    public function user_profile() {
96        $blog_name = get_bloginfo( 'blogname' );
97        if ( empty( $blog_name ) ) {
98            $blog_name = home_url( '/' );
99        }
100
101        ?>
102        <div id="post-by-email" class="jetpack-targetable">
103            <h3><?php esc_html_e( 'Post by Email', 'jetpack' ); ?></h3>
104            <table class="form-table">
105                <tr>
106                    <th scope="row"><?php esc_html_e( 'Email Address', 'jetpack' ); ?><span id="jp-pbe-spinner" class="spinner"></span></th>
107                    <td>
108                        <div id="jp-pbe-error" class="jetpack-inline-error"></div>
109                        <?php
110
111                        if ( $this->check_user_connection() ) {
112                            $email = $this->get_post_by_email_address();
113
114                            $enable_button_style = empty( $email ) ? '' : 'display: none;';
115                            $info_style          = empty( $email ) ? 'display: none;' : '';
116                            ?>
117
118                            <input type="button" name="jp-pbe-enable" id="jp-pbe-enable" class="button" value="<?php esc_attr_e( 'Enable Post By Email', 'jetpack' ); ?>" style="<?php echo esc_attr( $enable_button_style ); ?>" />
119                            <div id="jp-pbe-info" style="<?php echo esc_attr( $info_style ); ?>">
120                                <p id="jp-pbe-email-wrapper">
121                                    <input type="text" id="jp-pbe-email" value="<?php echo esc_attr( $email ); ?>" readonly="readonly" class="regular-text" />
122                                    <span class="description"><a target="_blank" rel="noopener noreferrer" href="<?php echo esc_url( Redirect::get_url( 'jetpack-support-post-by-email' ) ); ?>"><?php esc_html_e( 'More information', 'jetpack' ); ?></a></span>
123                                </p>
124                                <p>
125                                    <input type="button" name="jp-pbe-regenerate" id="jp-pbe-regenerate" class="button" value="<?php esc_attr_e( 'Regenerate Address', 'jetpack' ); ?> " />
126                                    <input type="button" name="jp-pbe-disable" id="jp-pbe-disable" class="button" value="<?php esc_attr_e( 'Disable Post By Email', 'jetpack' ); ?> " />
127                                </p>
128                            </div>
129                            <?php
130                        } else {
131                            $jetpack = Jetpack::init();
132                            ?>
133
134                            <p class="jetpack-inline-message">
135                                <?php
136                                printf(
137                                    /* translators: Placeholder is the site's name from WordPress settings. */
138                                    esc_html( wptexturize( __( 'To use Post By Email, you need to link your %s account to your WordPress.com account.', 'jetpack' ) ) ),
139                                    '<strong>' . esc_html( $blog_name ) . '</strong>'
140                                );
141                                ?>
142                                <br />
143                                <?php echo esc_html( wptexturize( __( "If you don't have a WordPress.com account yet, you can sign up for free in just a few seconds.", 'jetpack' ) ) ); ?>
144                            </p>
145                            <p>
146                                <a href="<?php echo esc_url( $jetpack->build_connect_url( true, get_edit_profile_url( get_current_user_id() ) . '#post-by-email', 'unlinked-user-pbe' ) ); ?>" class="button button-connector" id="wpcom-connect"><?php esc_html_e( 'Link account with WordPress.com', 'jetpack' ); ?></a>
147                            </p>
148                            <?php
149                        }
150                        ?>
151                    </td>
152                </tr>
153            </table>
154        </div>
155        <?php
156    }
157
158    /**
159     * XMLRPC Query to WP.com for PBE e-mail address for user.
160     *
161     * @return string|null PBE E-mail Address or null on error.
162     */
163    public function get_post_by_email_address() {
164        $xml = $this->init_rest_connection();
165
166        $xml->query( 'jetpack.getPostByEmailAddress' );
167
168        if ( $xml->isError() ) {
169            return null;
170        }
171
172        $response = $xml->getResponse();
173        if ( empty( $response ) ) {
174            return null;
175        }
176
177        return $response;
178    }
179
180    /**
181     * Process the REST API request to modify the "Post by Email" settings.
182     *
183     * @param string $action Allowed values: 'create', 'regenerate', 'delete'.
184     *
185     * @return array|false
186     */
187    public function process_api_request( $action ) {
188        $endpoint      = null;
189        $error_message = esc_html__( 'Please try again later.', 'jetpack' );
190        $result        = false;
191
192        switch ( $action ) {
193            case 'create':
194                $endpoint      = 'jetpack.createPostByEmailAddress';
195                $error_message = esc_html__( 'Unable to create the Post by Email address. Please try again later.', 'jetpack' );
196                break;
197            case 'regenerate':
198                $endpoint      = 'jetpack.regeneratePostByEmailAddress';
199                $error_message = esc_html__( 'Unable to regenerate the Post by Email address. Please try again later.', 'jetpack' );
200                break;
201            case 'delete':
202                $endpoint      = 'jetpack.deletePostByEmailAddress';
203                $error_message = esc_html__( 'Unable to delete the Post by Email address. Please try again later.', 'jetpack' );
204                break;
205        }
206
207        if ( $endpoint ) {
208            $result = $this->process_rest_proxy_request( $endpoint, $error_message );
209        }
210
211        return $result;
212    }
213
214    /**
215     * Calls WPCOM through authenticated request to create, regenerate or delete the Post by Email address.
216     *
217     * @since 4.3.0
218     *
219     * @param string $endpoint Process to call on WPCOM to create, regenerate or delete the Post by Email address.
220     * @param string $error    Error message to return.
221     *
222     * @return array
223     */
224    private function process_rest_proxy_request( $endpoint, $error ) {
225        if ( ! current_user_can( 'edit_posts' ) ) {
226            return array( 'message' => $error );
227        }
228
229        $xml = $this->init_rest_connection();
230
231        $xml->query( $endpoint );
232
233        if ( $xml->isError() ) {
234            return array( 'message' => $error );
235        }
236
237        $response = $xml->getResponse();
238        if ( empty( $response ) ) {
239            return array( 'message' => $error );
240        }
241
242        // Used only in Jetpack_Core_Json_Api_Endpoints::get_remote_value.
243        update_option( 'post_by_email_address' . get_current_user_id(), $response );
244
245        return $response;
246    }
247
248    /**
249     * Initialize the IXR client
250     *
251     * @return Jetpack_IXR_Client
252     */
253    private function init_rest_connection() {
254        return new Jetpack_IXR_Client( array( 'user_id' => get_current_user_id() ) );
255    }
256}