← All changes | includes/core.php +279 -94 2.1.18 → 2.2.4 View file →

		@@ -29,70 +29,92 @@
29	29	* Allowed HTML for the wp_kses function used to render certain paragraphs of texts.
30	30	*
31	31	* @var array
32	32	*/
33		- public $allowed_html = array(
34		- 'a' => array(
35		- 'href' => array(),
36		- 'title' => array(),
37		- 'target' => array()
38		- ),
39		- 'p' => array(
40		- 'style' => array()
41		- ),
42		- 'span' => array(
43		- 'style' => array()
44		- ),
45		- 'br' => array(),
46		- 'strong' => array(),
47		- 'b' => array(),
48		- 'i' => array(
49		- 'style' => array()
50		- ),
51		- 'label' => array(
52		- 'for' => array(),
53		- 'style' => array()
54		- ),
55		- 'input' => array(
56		- 'type' => array(),
57		- 'class' => array(),
58		- 'name' => array(),
59		- 'id' => array(),
60		- 'value' => array(),
61		- 'checked' => array(),
62		- 'style' => array()
63		- ),
64		- 'textarea' => array(
65		- 'rows' => array(),
66		- 'id' => array(),
67		- 'name' => array()
68		- ),
69		- 'select' => array(
70		- 'name' => array(),
71		- 'id' => array(),
72		- 'data-selected' => array()
73		- ),
74		- 'option' => array(
75		- 'value' => array(),
76		- 'selected' => array()
77		- ),
78		- 'table' => array(
79		- 'class' => array(),
80		- 'style' => array()
81		- ),
82		- 'thead' => array(),
83		- 'th' => array(
84		- 'style' => array()
85		- ),
86		- 'tr' => array(),
87		- 'td' => array(),
88		- 'div' => array(
89		- 'class' => array(),
90		- 'style' => array()
91		- )
92		- );
	33	+ public $allowed_html = [
	34	+ 'a' => [
	35	+ 'href' => [],
	36	+ 'title' => [],
	37	+ 'target' => []
	38	+ ],
	39	+ 'p' => [
	40	+ 'style' => []
	41	+ ],
	42	+ 'span' => [
	43	+ 'style' => []
	44	+ ],
	45	+ 'br' => [],
	46	+ 'strong' => [],
	47	+ 'b' => [],
	48	+ 'i' => [
	49	+ 'style' => []
	50	+ ],
	51	+ 'label' => [
	52	+ 'for' => [],
	53	+ 'style' => []
	54	+ ],
	55	+ 'input' => [
	56	+ 'type' => [],
	57	+ 'class' => [],
	58	+ 'name' => [],
	59	+ 'id' => [],
	60	+ 'value' => [],
	61	+ 'checked' => [],
	62	+ 'style' => []
	63	+ ],
	64	+ 'textarea' => [
	65	+ 'rows' => [],
	66	+ 'id' => [],
	67	+ 'name' => []
	68	+ ],
	69	+ 'select' => [
	70	+ 'name' => [],
	71	+ 'id' => [],
	72	+ 'data-selected' => []
	73	+ ],
	74	+ 'option' => [
	75	+ 'value' => [],
	76	+ 'selected' => []
	77	+ ],
	78	+ 'table' => [
	79	+ 'class' => [],
	80	+ 'style' => []
	81	+ ],
	82	+ 'thead' => [],
	83	+ 'th' => [
	84	+ 'style' => []
	85	+ ],
	86	+ 'tr' => [],
	87	+ 'td' => [],
	88	+ 'div' => [
	89	+ 'class' => [],
	90	+ 'style' => []
	91	+ ]
	92	+ ];
93	93
94	94	/**
	95	+ * Some of the IP addresses of Patchstack.
	96	+ *
	97	+ * @var array
	98	+ */
	99	+ public $ips = [
	100	+ '18.221.197.243',
	101	+ '52.15.237.250',
	102	+ '3.19.3.34',
	103	+ '3.18.238.17',
	104	+ '13.58.49.77',
	105	+ '18.222.191.77',
	106	+ '3.131.108.250',
	107	+ '3.23.157.140',
	108	+ '18.220.70.233',
	109	+ '3.140.84.221',
	110	+ '185.212.171.100',
	111	+ '3.133.121.93',
	112	+ '18.219.61.133',
	113	+ '3.14.29.150'
	114	+ ];
	115	+
	116	+ /**
95	117	* @param Patchstack $plugin
96	118	* @return void
97	119	*/
98	120	public function __construct( $plugin ) {
		@@ -109,9 +131,9 @@
109	131	* @return mixed
110	132	*/
111	133	public function get_option( $name, $default = false ) {
112	134	// We always want to return the site option on the default settings management page.
113		- if ( isset( $_GET['page'] ) && $_GET['page'] == 'patchstack-multisite-settings' && is_super_admin() ) {
	135	+ if ( isset( $_GET['page'] ) && $_GET['page'] == 'patchstack-multisite-settings' && function_exists( 'wp_get_current_user' ) && is_super_admin() ) {
114	136	return get_site_option( $name, $default );
115	137	}
116	138
117	139	// Get the setting of the current site.
		@@ -175,69 +197,232 @@
175	197	return false;
176	198	}
177	199
178	200	/**
179		- * Determine if a given PHP function is disabled or not.
180		- *
181		- * @param string $name Name of the function to check.
182		- * @return boolean Whether or not the function is available to call.
	201	+ * Convert the subscription class name to its text variant.
	202	+ *
	203	+ * @param int $class
	204	+ * @return string
183	205	*/
184		- public function function_available( $name ) {
185		- $safe_mode = ini_get( 'safe_mode' );
186		- if ( $safe_mode && strtolower( $safe_mode ) != 'off' ) {
	206	+ public function get_subscription_name( $class ) {
	207	+ switch ( $class ) {
	208	+ case 0:
	209	+ return 'Community';
	210	+ case 1:
	211	+ case 6:
	212	+ return 'Developer';
	213	+ case 7:
	214	+ return 'Business';
	215	+ default:
	216	+ return 'Unknown';
	217	+ }
	218	+ }
	219	+
	220	+ /**
	221	+ * Determine if the user is a community user.
	222	+ *
	223	+ * @return boolean
	224	+ */
	225	+ public function is_community() {
	226	+ $class = get_option( 'patchstack_subscription_class', '');
	227	+ return $class != '' && (int) $class === 0;
	228	+ }
	229	+
	230	+ /**
	231	+ * Determine if the plugin is connected to the API.
	232	+ *
	233	+ * @return boolean
	234	+ */
	235	+ public function is_connected() {
	236	+ // Determine if the API client id is set.
	237	+ if ( $this->plugin->client_id == 'PATCHSTACK_CLIENT_ID' && get_option( 'patchstack_clientid', false ) === false ) {
187	238	return false;
188	239	}
189	240
190		- // Determine if the function is available.
191		- if ( in_array( $name, array_map( 'trim', explode( ',', ini_get( 'disable_functions' ) ) ) ) ) {
	241	+ // Determine if we have an API token.
	242	+ if ( get_option( 'patchstack_api_token', '' ) == '' ) {
192	243	return false;
193	244	}
194	245
	246	+ // Determine if we have a last license check set.
	247	+ $last_license_check = get_option( 'patchstack_last_license_check', 0 );
	248	+ if ( !empty( $last_license_check ) && time() - $last_license_check >= 604800 ) {
	249	+ return false;
	250	+ }
	251	+
195	252	return true;
196	253	}
197	254
198	255	/**
199		- * Attempt to get the client IP by checking all possible IP (proxy) headers.
	256	+ * Determine if the plugin provides protection.
	257	+ *
	258	+ * @return boolean
	259	+ */
	260	+ public function is_protected() {
	261	+ return get_option( 'patchstack_license_free', false) == 0;
	262	+ }
	263	+
	264	+ /**
	265	+ * Grab the IP address of the user. Give the override IP header priority.
	266	+ * If this does not exist, we should always default to REMOTE_ADDR.
200	267	*
201	268	* @return string
202	269	*/
203	270	public function get_ip() {
204		- // IP address header override set?
205	271	$override = get_site_option( 'patchstack_firewall_ip_header', '' );
206	272	if ( $override != '' && isset( $_SERVER[ $override ] ) ) {
207	273	return $_SERVER[ $override ];
208	274	}
209	275
210		- // IP address headers which should have priority and be used regardless of other headers.
211		- $priority = array( 'HTTP_CF_CONNECTING_IP', 'HTTP_X_SUCURI_CLIENTIP' );
212		- foreach ( $priority as $header ) {
213		- if ( isset( $_SERVER[ $header ] ) && filter_var( $_SERVER[ $header ], FILTER_VALIDATE_IP ) !== false ) {
214		- return $_SERVER[ $header ];
	276	+ return isset( $_SERVER['REMOTE_ADDR'] ) ? $_SERVER['REMOTE_ADDR'] : '';
	277	+ }
	278	+
	279	+ /**
	280	+ * Grab the secret key used for API communication.
	281	+ *
	282	+ * @param string $custom
	283	+ * @return string
	284	+ */
	285	+ public function get_secret_key( $custom = '' ) {
	286	+ if ( $custom != '' ) {
	287	+ return $this->encrypt( $custom );
	288	+ }
	289	+
	290	+ $secret = get_option( 'patchstack_secretkey', '' );
	291	+ if ( ! $secret ) {
	292	+ return '';
	293	+ }
	294	+
	295	+ if ( strlen( $secret ) === 40 ) {
	296	+ $enc = $this->encrypt( $secret );
	297	+
	298	+ update_option( 'patchstack_secretkey', $enc['cipher'] );
	299	+ update_option( 'patchstack_secretkey_nonce', $enc['nonce'] );
	300	+
	301	+ return $secret;
	302	+ }
	303	+
	304	+ $nonce = get_option( 'patchstack_secretkey_nonce' );
	305	+ return $this->decrypt( $secret, $nonce );
	306	+ }
	307	+
	308	+ /**
	309	+ * Set the secret key used for API communication.
	310	+ *
	311	+ * @param string $secret
	312	+ * @return void
	313	+ */
	314	+ public function set_secret_key( $secret ) {
	315	+ $enc = $this->encrypt( $secret );
	316	+
	317	+ update_option( 'patchstack_secretkey', $enc['cipher'] );
	318	+ update_option( 'patchstack_secretkey_nonce', $enc['nonce'] );
	319	+ }
	320	+
	321	+ /**
	322	+ * Determine which encryption dependency we can use.
	323	+ *
	324	+ * @return string
	325	+ */
	326	+ public function get_enc_type() {
	327	+ if ( function_exists('sodium_crypto_generichash') ) {
	328	+ return 'native';
	329	+ }
	330	+
	331	+ return 'compat';
	332	+ }
	333	+
	334	+ /**
	335	+ * Get the unique nonce that is used for the secretbox.
	336	+ *
	337	+ * @return string
	338	+ */
	339	+ public function get_enc_nonce() {
	340	+ if ( function_exists('random_bytes') ) {
	341	+ return random_bytes( 24 );
	342	+ }
	343	+
	344	+ require_once dirname( __FILE__ ) . '/2fa/polyfill/lib/random.php';
	345	+ return random_bytes( 24 );
	346	+ }
	347	+
	348	+ /**
	349	+ * Encrypt a string.
	350	+ *
	351	+ * @param string $message
	352	+ * @return array
	353	+ */
	354	+ public function encrypt( $message ) {
	355	+ if ( is_null( $message ) || ! defined( 'AUTH_KEY' ) ) {
	356	+ return [
	357	+ 'cipher' => $message,
	358	+ 'nonce' => ''
	359	+ ];
	360	+ }
	361	+
	362	+ $enc_type = $this->get_enc_type();
	363	+ $nonce = $this->get_enc_nonce();
	364	+
	365	+ try {
	366	+ // Use the PHP native encryption functions.
	367	+ if ( $enc_type == 'native' ) {
	368	+ $key = sodium_crypto_generichash( AUTH_KEY );
	369	+
	370	+ return [
	371	+ 'cipher' => sodium_bin2hex( sodium_crypto_secretbox( $message, $nonce, $key ) ),
	372	+ 'nonce' => sodium_bin2hex( $nonce )
	373	+ ];
215	374	}
	375	+
	376	+ // Use the Sodium polyfill library part of WordPress core.
	377	+ require_once ABSPATH . WPINC . '/sodium_compat/autoload.php';
	378	+ $key = \Sodium\crypto_generichash( AUTH_KEY );
	379	+
	380	+ return [
	381	+ 'cipher' => \Sodium\bin2hex( \Sodium\crypto_secretbox( $message, $nonce, $key ) ),
	382	+ 'nonce' => \Sodium\bin2hex( $nonce )
	383	+ ];
	384	+ } catch ( Exception $e ) {
	385	+ return [
	386	+ 'cipher' => $message,
	387	+ 'nonce' => ''
	388	+ ];
216	389	}
	390	+ }
217	391
218		- // Special case for hosts that have a weird configuration.
219		- if ( $this->function_available( 'php_uname' ) ) {
220		- $uname = @php_uname();
	392	+ /**
	393	+ * Decrypt a cipher to plain-text.
	394	+ *
	395	+ * @param string $cipher
	396	+ * @param string $nonce
	397	+ * @return string
	398	+ */
	399	+ public function decrypt( $cipher, $nonce ) {
	400	+ $enc_type = $this->get_enc_type();
221	401
222		- // Bluehos and Hostmonster store the real IP in $_SERVER['REMOTE_ADDR'] but the proxy IP in HTTP_X_FORWARDED_FOR.t
223		- if ( strpos( $uname, 'bluehost' ) !== false || strpos( $uname, 'hostmonster' ) !== false ) {
224		- return $_SERVER['REMOTE_ADDR'];
225		- }
	402	+ // If we received an empty nonce, we assume it was never properly encrypted to begin with.
	403	+ if ( $nonce == '' || ! defined( 'AUTH_KEY' ) ) {
	404	+ return $cipher;
	405	+ }
226	406
227		- // Hostgator stores the real IP in $_SERVER['REMOTE_ADDR'] but the proxy IP in HTTP_X_FORWARDED_FOR.
228		- if ( ( strpos( $uname, 'websitewelcome' ) || strpos( $uname, 'hostgator' ) ) && isset( $_SERVER['HTTP_X_FORWARDED_FOR'] ) && $_SERVER['HTTP_X_FORWARDED_FOR'] != $_SERVER['REMOTE_ADDR'] ) {
229		- return $_SERVER['REMOTE_ADDR'];
	407	+ try {
	408	+ // Determine if we should use native or polyfill functions.
	409	+ if ( $enc_type == 'native' ) {
	410	+ $key = sodium_crypto_generichash( AUTH_KEY );
	411	+ $dec = sodium_crypto_secretbox_open( sodium_hex2bin( $cipher ), sodium_hex2bin( $nonce ), $key );
	412	+ } else {
	413	+ require_once ABSPATH . WPINC . '/sodium_compat/autoload.php';
	414	+ $key = \Sodium\crypto_generichash( AUTH_KEY );
	415	+ $dec = \Sodium\crypto_secretbox_open( sodium_hex2bin( $cipher ), sodium_hex2bin( $nonce ), $key );
230	416	}
	417	+ } catch ( Exception $e ) {
	418	+ return $cipher;
231	419	}
232	420
233		- // In order of priority, try to get the IP address.
234		- $allowed = array( 'HTTP_X_REAL_IP', 'HTTP_CLIENT_IP', 'HTTP_X_FORWARDED_FOR', 'HTTP_X_FORWARDED', 'HTTP_FORWARDED_FOR', 'HTTP_FORWARDED', 'SUCURI_RIP', 'REMOTE_ADDR' );
235		- foreach ( $allowed as $header ) {
236		- if ( isset( $_SERVER[ $header ] ) && filter_var( $_SERVER[ $header ], FILTER_VALIDATE_IP ) !== false ) {
237		- return $_SERVER[ $header ];
238		- }
	421	+ // In case decryption failed, return null.
	422	+ if ( ! $dec ) {
	423	+ return null;
239	424	}
240	425
241		- return '127.0.0.1';
	426	+ return $dec;
242	427	}
243	428	}