Code Coverage |
||||||||||
Lines |
Functions and Methods |
Classes and Traits |
||||||||
| Total | |
77.78% |
77 / 99 |
|
40.00% |
4 / 10 |
CRAP | |
0.00% |
0 / 1 |
| Local_Provisioner | |
79.38% |
77 / 97 |
|
40.00% |
4 / 10 |
44.13 | |
0.00% |
0 / 1 |
| __construct | |
100.00% |
3 / 3 |
|
100.00% |
1 / 1 |
2 | |||
| get_type | |
0.00% |
0 / 1 |
|
0.00% |
0 / 1 |
2 | |||
| handle_for_site | |
100.00% |
1 / 1 |
|
100.00% |
1 / 1 |
1 | |||
| provision | |
93.88% |
46 / 49 |
|
0.00% |
0 / 1 |
12.03 | |||
| txt_record | |
100.00% |
7 / 7 |
|
100.00% |
1 / 1 |
1 | |||
| get_usage | |
0.00% |
0 / 9 |
|
0.00% |
0 / 1 |
6 | |||
| deprovision | |
0.00% |
0 / 4 |
|
0.00% |
0 / 1 |
12 | |||
| dkim_record | |
81.82% |
9 / 11 |
|
0.00% |
0 / 1 |
5.15 | |||
| find_dkim_dns_record | |
87.50% |
7 / 8 |
|
0.00% |
0 / 1 |
5.05 | |||
| company_name | |
100.00% |
4 / 4 |
|
100.00% |
1 / 1 |
2 | |||
| 1 | <?php |
| 2 | /** |
| 3 | * Dev-only provisioner that does WordPress.com's job with a parent API key. |
| 4 | * |
| 5 | * @package automattic/jetpack-send |
| 6 | */ |
| 7 | |
| 8 | namespace Automattic\Jetpack\Send; |
| 9 | |
| 10 | use WP_Error; |
| 11 | |
| 12 | if ( ! defined( 'ABSPATH' ) ) { |
| 13 | exit( 0 ); |
| 14 | } |
| 15 | |
| 16 | /** |
| 17 | * Creates the site's sub-account directly against MailChannels. |
| 18 | */ |
| 19 | class Local_Provisioner implements Provisioner { |
| 20 | |
| 21 | /** |
| 22 | * DKIM selector for hosted keys. |
| 23 | * |
| 24 | * @var string |
| 25 | */ |
| 26 | const DKIM_SELECTOR = 'jpsend'; |
| 27 | |
| 28 | /** |
| 29 | * Client authenticated with the parent account key. |
| 30 | * |
| 31 | * @var MailChannels_Client |
| 32 | */ |
| 33 | private $parent_client; |
| 34 | |
| 35 | /** |
| 36 | * Send limit to set, or null to inherit the parent's. |
| 37 | * |
| 38 | * @var int|null |
| 39 | */ |
| 40 | private $send_limit; |
| 41 | |
| 42 | /** |
| 43 | * DNS zone that holds the real Lockdown and DKIM values, or '' to give customers the values directly. |
| 44 | * |
| 45 | * @var string |
| 46 | */ |
| 47 | private $dns_zone; |
| 48 | |
| 49 | /** |
| 50 | * Constructor. |
| 51 | * |
| 52 | * @param MailChannels_Client $parent_client Parent-key client. |
| 53 | * @param int|null $send_limit Sub-account send limit. |
| 54 | * @param string $dns_zone Zone customers' CNAMEs point into, or ''. |
| 55 | */ |
| 56 | public function __construct( MailChannels_Client $parent_client, $send_limit = null, $dns_zone = '' ) { |
| 57 | $this->parent_client = $parent_client; |
| 58 | $this->send_limit = null === $send_limit ? null : (int) $send_limit; |
| 59 | $this->dns_zone = strtolower( trim( (string) $dns_zone, " .\t\n" ) ); |
| 60 | } |
| 61 | |
| 62 | /** |
| 63 | * Type. |
| 64 | * |
| 65 | * @return string |
| 66 | */ |
| 67 | public function get_type() { |
| 68 | return 'local'; |
| 69 | } |
| 70 | |
| 71 | /** |
| 72 | * A handle that is stable per site, so provisioning again reuses the sub-account. |
| 73 | * |
| 74 | * @return string |
| 75 | */ |
| 76 | public static function handle_for_site() { |
| 77 | return 'jpsend' . substr( md5( home_url() ), 0, 16 ); |
| 78 | } |
| 79 | |
| 80 | /** |
| 81 | * Create or reuse the sub-account, issue a key, and prepare DNS records. |
| 82 | * |
| 83 | * @param string $domain Sending domain. |
| 84 | * @return array|WP_Error |
| 85 | */ |
| 86 | public function provision( $domain ) { |
| 87 | $handle = self::handle_for_site(); |
| 88 | $created = $this->parent_client->create_sub_account( $handle, self::company_name() ); |
| 89 | if ( is_wp_error( $created ) && 'jetpack_send_http_409' !== $created->get_error_code() ) { |
| 90 | return $created; |
| 91 | } |
| 92 | |
| 93 | $key = $this->parent_client->create_sub_account_api_key( $handle ); |
| 94 | if ( is_wp_error( $key ) ) { |
| 95 | return $key; |
| 96 | } |
| 97 | $api_key = (string) ( $key['key'] ?? $key['api_key'] ?? $key['value'] ?? '' ); |
| 98 | if ( '' === $api_key ) { |
| 99 | return new WP_Error( 'jetpack_send_no_api_key', __( 'MailChannels did not return an API key for the new sub-account.', 'jetpack-send-pkg' ), array( 'status' => 502 ) ); |
| 100 | } |
| 101 | |
| 102 | if ( null !== $this->send_limit ) { |
| 103 | $limit = $this->parent_client->set_sub_account_limit( $handle, $this->send_limit ); |
| 104 | if ( is_wp_error( $limit ) ) { |
| 105 | return $limit; |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | $required = array( |
| 110 | self::txt_record( '_mailchannels.' . $domain, 'v=mc1 auth=' . $handle, 'lockdown' ), |
| 111 | ); |
| 112 | $dkim = $this->dkim_record( $domain, new MailChannels_Client( $api_key ) ); |
| 113 | if ( $dkim ) { |
| 114 | $required[] = $dkim; |
| 115 | } |
| 116 | |
| 117 | // With a zone, customers add short CNAMEs and the zone holds the values, so they can change without customer edits. |
| 118 | $records = $required; |
| 119 | $zone_records = array(); |
| 120 | if ( '' !== $this->dns_zone ) { |
| 121 | $records = array(); |
| 122 | foreach ( $required as $record ) { |
| 123 | $target = $handle . '.' . $record['purpose'] . '.' . $this->dns_zone; |
| 124 | $records[] = array_merge( |
| 125 | $record, |
| 126 | array( |
| 127 | 'type' => 'CNAME', |
| 128 | 'value' => $target, |
| 129 | ) |
| 130 | ); |
| 131 | $zone_records[] = array_merge( $record, array( 'name' => $target ) ); |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | // SPF is optional because DMARC passes on aligned DKIM; it sits after Lockdown to keep the checklist order. |
| 136 | $spf = array_merge( |
| 137 | self::txt_record( $domain, 'v=spf1 include:relay.mailchannels.net ~all', 'spf' ), |
| 138 | array( 'optional' => true ) |
| 139 | ); |
| 140 | array_splice( $records, 1, 0, array( $spf ) ); |
| 141 | |
| 142 | $result = array( |
| 143 | 'handle' => $handle, |
| 144 | 'api_key' => $api_key, |
| 145 | 'lockdown_auth_id' => $handle, |
| 146 | 'monthly_limit' => null === $this->send_limit ? -1 : $this->send_limit, |
| 147 | 'dns_records' => $records, |
| 148 | ); |
| 149 | if ( $zone_records ) { |
| 150 | $result['zone_records'] = $zone_records; |
| 151 | } |
| 152 | return $result; |
| 153 | } |
| 154 | |
| 155 | /** |
| 156 | * A required TXT record. |
| 157 | * |
| 158 | * @param string $name Host name. |
| 159 | * @param string $value Value. |
| 160 | * @param string $purpose `lockdown`, `spf`, or `dkim`. |
| 161 | * @return array |
| 162 | */ |
| 163 | private static function txt_record( $name, $value, $purpose ) { |
| 164 | return array( |
| 165 | 'type' => 'TXT', |
| 166 | 'name' => $name, |
| 167 | 'value' => $value, |
| 168 | 'purpose' => $purpose, |
| 169 | 'optional' => false, |
| 170 | ); |
| 171 | } |
| 172 | |
| 173 | /** |
| 174 | * Usage for the site's sub-account. |
| 175 | * |
| 176 | * @param array $account Stored account. |
| 177 | * @return array|WP_Error |
| 178 | */ |
| 179 | public function get_usage( array $account ) { |
| 180 | $usage = $this->parent_client->get_sub_account_usage( $account['handle'] ); |
| 181 | if ( is_wp_error( $usage ) ) { |
| 182 | return $usage; |
| 183 | } |
| 184 | |
| 185 | return array( |
| 186 | 'total_usage' => (int) ( $usage['total_usage'] ?? 0 ), |
| 187 | 'monthly_limit' => (int) ( $usage['monthly_limit'] ?? -1 ), |
| 188 | 'period_start' => (string) ( $usage['period_start_date'] ?? '' ), |
| 189 | 'period_end' => (string) ( $usage['period_end_date'] ?? '' ), |
| 190 | ); |
| 191 | } |
| 192 | |
| 193 | /** |
| 194 | * Delete the site's sub-account; one that's already gone counts as success. |
| 195 | * |
| 196 | * @param array $account Stored account. |
| 197 | * @return true|WP_Error |
| 198 | */ |
| 199 | public function deprovision( array $account ) { |
| 200 | $result = $this->parent_client->delete_sub_account( $account['handle'] ); |
| 201 | if ( is_wp_error( $result ) && 'jetpack_send_http_404' !== $result->get_error_code() ) { |
| 202 | return $result; |
| 203 | } |
| 204 | return true; |
| 205 | } |
| 206 | |
| 207 | /** |
| 208 | * Create (or fetch the existing) hosted DKIM key's DNS record; null when unavailable. |
| 209 | * |
| 210 | * @param string $domain Domain. |
| 211 | * @param MailChannels_Client $client Sub-account client. |
| 212 | * @return array|null |
| 213 | */ |
| 214 | private function dkim_record( $domain, MailChannels_Client $client ) { |
| 215 | $response = $client->create_dkim_key( $domain, self::DKIM_SELECTOR ); |
| 216 | if ( is_wp_error( $response ) ) { |
| 217 | if ( 'jetpack_send_http_409' !== $response->get_error_code() ) { |
| 218 | return null; |
| 219 | } |
| 220 | $response = $client->get_dkim_keys( $domain, self::DKIM_SELECTOR ); |
| 221 | if ( is_wp_error( $response ) ) { |
| 222 | return null; |
| 223 | } |
| 224 | } |
| 225 | |
| 226 | $record = self::find_dkim_dns_record( $response ); |
| 227 | if ( ! $record ) { |
| 228 | return null; |
| 229 | } |
| 230 | |
| 231 | return self::txt_record( self::DKIM_SELECTOR . '._domainkey.' . $domain, (string) $record['value'], 'dkim' ); |
| 232 | } |
| 233 | |
| 234 | /** |
| 235 | * The first entry of the first `dkim_dns_records` list anywhere in a response. |
| 236 | * |
| 237 | * @param array $data Decoded response. |
| 238 | * @return array|null |
| 239 | */ |
| 240 | private static function find_dkim_dns_record( array $data ) { |
| 241 | if ( isset( $data['dkim_dns_records'][0]['value'] ) ) { |
| 242 | return $data['dkim_dns_records'][0]; |
| 243 | } |
| 244 | foreach ( $data as $child ) { |
| 245 | if ( is_array( $child ) ) { |
| 246 | $found = self::find_dkim_dns_record( $child ); |
| 247 | if ( $found ) { |
| 248 | return $found; |
| 249 | } |
| 250 | } |
| 251 | } |
| 252 | return null; |
| 253 | } |
| 254 | |
| 255 | /** |
| 256 | * Site title clamped to MailChannels' 3–128 character company name. |
| 257 | * |
| 258 | * @return string |
| 259 | */ |
| 260 | private static function company_name() { |
| 261 | $name = trim( wp_specialchars_decode( (string) get_bloginfo( 'name' ), ENT_QUOTES ) ); |
| 262 | if ( mb_strlen( $name ) < 3 ) { |
| 263 | $name = 'Jetpack Send site'; |
| 264 | } |
| 265 | return mb_substr( $name, 0, 128 ); |
| 266 | } |
| 267 | } |