/wp-content/plugins/contact-form-7/modules/captcha.php

https://github.com/konscript/schroderpartners · PHP · 490 lines · 357 code · 121 blank · 12 comment · 73 complexity · 5ed8bf47d5c7b9d9f7281081256ac716 MD5 · raw file 

    

  1. <?php
    2. 

  2. /**
    3. 

  3. ** A base module for [captchac] and [captchar]
    4. 

  4. **/
    5. 

  5. 

  6. /* Shortcode handler */
    7. 

  7. 

  8. wpcf7_add_shortcode( 'captchac', 'wpcf7_captcha_shortcode_handler', true );
    9. 

  9. wpcf7_add_shortcode( 'captchar', 'wpcf7_captcha_shortcode_handler', true );
    10. 

  10. 

  11. function wpcf7_captcha_shortcode_handler( $tag ) {
    12. 

  12. 	if ( ! is_array( $tag ) )
    13. 

  13. 		return '';
    14. 

  14. 

  15. 	$type = $tag['type'];
    16. 

  16. 	$name = $tag['name'];
    17. 

  17. 	$options = (array) $tag['options'];
    18. 

  18. 	$values = (array) $tag['values'];
    19. 

  19. 

  20. 	if ( empty( $name ) )
    21. 

  21. 		return '';
    22. 

  22. 

  23. 	$validation_error = wpcf7_get_validation_error( $name );
    24. 

  24. 

  25. 	$atts = '';
    26. 

  26. 	$id_att = '';
    27. 

  27. 	$class_att = '';
    28. 

  28. 	$size_att = '';
    29. 

  29. 	$maxlength_att = '';
    30. 

  30. 	$tabindex_att = '';
    31. 

  31. 

  32. 	if ( 'captchac' == $type )
    33. 

  33. 		$class_att .= ' wpcf7-captcha-' . $name;
    34. 

  34. 

  35. 	foreach ( $options as $option ) {
    36. 

  36. 		if ( preg_match( '%^id:([-0-9a-zA-Z_]+)$%', $option, $matches ) ) {
    37. 

  37. 			$id_att = $matches[1];
    38. 

  38. 

  39. 		} elseif ( preg_match( '%^class:([-0-9a-zA-Z_]+)$%', $option, $matches ) ) {
    40. 

  40. 			$class_att .= ' ' . $matches[1];
    41. 

  41. 

  42. 		} elseif ( preg_match( '%^([0-9]*)[/x]([0-9]*)$%', $option, $matches ) ) {
    43. 

  43. 			$size_att = (int) $matches[1];
    44. 

  44. 			$maxlength_att = (int) $matches[2];
    45. 

  45. 

  46. 		} elseif ( preg_match( '%^tabindex:(\d+)$%', $option, $matches ) ) {
    47. 

  47. 			$tabindex_att = (int) $matches[1];
    48. 

  48. 

  49. 		}
    50. 

  50. 	}
    51. 

  51. 

  52. 	if ( $id_att )
    53. 

  53. 		$atts .= ' id="' . trim( $id_att ) . '"';
    54. 

  54. 

  55. 	if ( $class_att )
    56. 

  56. 		$atts .= ' class="' . trim( $class_att ) . '"';
    57. 

  57. 

  58. 	// Value.
    59. 

  59. 	if ( ! wpcf7_is_posted() && isset( $values[0] ) )
    60. 

  60. 		$value = $values[0];
    61. 

  61. 	else
    62. 

  62. 		$value = '';
    63. 

  63. 

  64. 	if ( 'captchac' == $type ) {
    65. 

  65. 		if ( ! class_exists( 'ReallySimpleCaptcha' ) ) {
    66. 

  66. 			return '<em>' . __( 'To use CAPTCHA, you need <a href="http://wordpress.org/extend/plugins/really-simple-captcha/">Really Simple CAPTCHA</a> plugin installed.', 'wpcf7' ) . '</em>';
    67. 

  67. 		}
    68. 

  68. 

  69. 		$op = array();
    70. 

  70. 		// Default
    71. 

  71. 		$op['img_size'] = array( 72, 24 );
    72. 

  72. 		$op['base'] = array( 6, 18 );
    73. 

  73. 		$op['font_size'] = 14;
    74. 

  74. 		$op['font_char_width'] = 15;
    75. 

  75. 

  76. 		$op = array_merge( $op, wpcf7_captchac_options( $options ) );
    77. 

  77. 

  78. 		if ( ! $filename = wpcf7_generate_captcha( $op ) )
    79. 

  79. 			return '';
    80. 

  80. 

  81. 		if ( is_array( $op['img_size'] ) )
    82. 

  82. 			$atts .= ' width="' . $op['img_size'][0] . '" height="' . $op['img_size'][1] . '"';
    83. 

  83. 

  84. 		$captcha_url = trailingslashit( wpcf7_captcha_tmp_url() ) . $filename;
    85. 

  85. 		$html = '<img alt="captcha" src="' . $captcha_url . '"' . $atts . ' />';
    86. 

  86. 		$ref = substr( $filename, 0, strrpos( $filename, '.' ) );
    87. 

  87. 		$html = '<input type="hidden" name="_wpcf7_captcha_challenge_' . $name . '" value="' . $ref . '" />' . $html;
    88. 

  88. 

  89. 		return $html;
    90. 

  90. 

  91. 	} elseif ( 'captchar' == $type ) {
    92. 

  92. 		if ( $size_att )
    93. 

  93. 			$atts .= ' size="' . $size_att . '"';
    94. 

  94. 		else
    95. 

  95. 			$atts .= ' size="40"'; // default size
    96. 

  96. 

  97. 		if ( $maxlength_att )
    98. 

  98. 			$atts .= ' maxlength="' . $maxlength_att . '"';
    99. 

  99. 

  100. 		if ( '' !== $tabindex_att )
    101. 

  101. 			$atts .= sprintf( ' tabindex="%d"', $tabindex_att );
    102. 

  102. 

  103. 		$html = '<input type="text" name="' . $name . '" value="' . esc_attr( $value ) . '"' . $atts . ' />';
    104. 

  104. 		$html = '<span class="wpcf7-form-control-wrap ' . $name . '">' . $html . $validation_error . '</span>';
    105. 

  105. 

  106. 		return $html;
    107. 

  107. 	}
    108. 

  108. }
    109. 

  109. 

  110. 

  111. /* Validation filter */
    112. 

  112. 

  113. add_filter( 'wpcf7_validate_captchar', 'wpcf7_captcha_validation_filter', 10, 2 );
    114. 

  114. 

  115. function wpcf7_captcha_validation_filter( $result, $tag ) {
    116. 

  116. 	$type = $tag['type'];
    117. 

  117. 	$name = $tag['name'];
    118. 

  118. 

  119. 	$_POST[$name] = (string) $_POST[$name];
    120. 

  120. 

  121. 	$captchac = '_wpcf7_captcha_challenge_' . $name;
    122. 

  122. 

  123. 	if ( ! wpcf7_check_captcha( $_POST[$captchac], $_POST[$name] ) ) {
    124. 

  124. 		$result['valid'] = false;
    125. 

  125. 		$result['reason'][$name] = wpcf7_get_message( 'captcha_not_match' );
    126. 

  126. 	}
    127. 

  127. 

  128. 	wpcf7_remove_captcha( $_POST[$captchac] );
    129. 

  129. 

  130. 	return $result;
    131. 

  131. }
    132. 

  132. 

  133. 

  134. /* Ajax echo filter */
    135. 

  135. 

  136. add_filter( 'wpcf7_ajax_onload', 'wpcf7_captcha_ajax_refill' );
    137. 

  137. add_filter( 'wpcf7_ajax_json_echo', 'wpcf7_captcha_ajax_refill' );
    138. 

  138. 

  139. function wpcf7_captcha_ajax_refill( $items ) {
    140. 

  140. 	if ( ! is_array( $items ) )
    141. 

  141. 		return $items;
    142. 

  142. 

  143. 	$fes = wpcf7_scan_shortcode( array( 'type' => 'captchac' ) );
    144. 

  144. 

  145. 	if ( empty( $fes ) )
    146. 

  146. 		return $items;
    147. 

  147. 

  148. 	$refill = array();
    149. 

  149. 

  150. 	foreach ( $fes as $fe ) {
    151. 

  151. 		$name = $fe['name'];
    152. 

  152. 		$options = $fe['options'];
    153. 

  153. 

  154. 		if ( empty( $name ) )
    155. 

  155. 			continue;
    156. 

  156. 

  157. 		$op = wpcf7_captchac_options( $options );
    158. 

  158. 		if ( $filename = wpcf7_generate_captcha( $op ) ) {
    159. 

  159. 			$captcha_url = trailingslashit( wpcf7_captcha_tmp_url() ) . $filename;
    160. 

  160. 			$refill[$name] = $captcha_url;
    161. 

  161. 		}
    162. 

  162. 	}
    163. 

  163. 

  164. 	if ( ! empty( $refill ) )
    165. 

  165. 		$items['captcha'] = $refill;
    166. 

  166. 

  167. 	return $items;
    168. 

  168. }
    169. 

  169. 

  170. 

  171. /* Messages */
    172. 

  172. 

  173. add_filter( 'wpcf7_messages', 'wpcf7_captcha_messages' );
    174. 

  174. 

  175. function wpcf7_captcha_messages( $messages ) {
    176. 

  176. 	return array_merge( $messages, array( 'captcha_not_match' => array(
    177. 

  177. 		'description' => __( "The code that sender entered does not match the CAPTCHA", 'wpcf7' ),
    178. 

  178. 		'default' => __( 'Your entered code is incorrect.', 'wpcf7' )
    179. 

  179. 	) ) );
    180. 

  180. }
    181. 

  181. 

  182. 

  183. /* Tag generator */
    184. 

  184. 

  185. add_action( 'admin_init', 'wpcf7_add_tag_generator_captcha', 45 );
    186. 

  186. 

  187. function wpcf7_add_tag_generator_captcha() {
    188. 

  188. 	wpcf7_add_tag_generator( 'captcha', __( 'CAPTCHA', 'wpcf7' ),
    189. 

  189. 		'wpcf7-tg-pane-captcha', 'wpcf7_tg_pane_captcha' );
    190. 

  190. }
    191. 

  191. 

  192. function wpcf7_tg_pane_captcha( &$contact_form ) {
    193. 

  193. ?>
    194. 

  194. <div id="wpcf7-tg-pane-captcha" class="hidden">
    195. 

  195. <form action="">
    196. 

  196. <table>
    197. 

  197. 

  198. <?php if ( ! class_exists( 'ReallySimpleCaptcha' ) ) : ?>
    199. 

  199. <tr><td colspan="2"><strong style="color: #e6255b"><?php echo esc_html( __( "Note: To use CAPTCHA, you need Really Simple CAPTCHA plugin installed.", 'wpcf7' ) ); ?></strong><br /><a href="http://wordpress.org/extend/plugins/really-simple-captcha/">http://wordpress.org/extend/plugins/really-simple-captcha/</a></td></tr>
    200. 

  200. <?php endif; ?>
    201. 

  201. 

  202. <tr><td><?php echo esc_html( __( 'Name', 'wpcf7' ) ); ?><br /><input type="text" name="name" class="tg-name oneline" /></td><td></td></tr>
    203. 

  203. </table>
    204. 

  204. 

  205. <table class="scope captchac">
    206. 

  206. <caption><?php echo esc_html( __( "Image settings", 'wpcf7' ) ); ?></caption>
    207. 

  207. 

  208. <tr>
    209. 

  209. <td><code>id</code> (<?php echo esc_html( __( 'optional', 'wpcf7' ) ); ?>)<br />
    210. 

  210. <input type="text" name="id" class="idvalue oneline option" /></td>
    211. 

  211. 

  212. <td><code>class</code> (<?php echo esc_html( __( 'optional', 'wpcf7' ) ); ?>)<br />
    213. 

  213. <input type="text" name="class" class="classvalue oneline option" /></td>
    214. 

  214. </tr>
    215. 

  215. 

  216. <tr>
    217. 

  217. <td><?php echo esc_html( __( "Foreground color", 'wpcf7' ) ); ?> (<?php echo esc_html( __( 'optional', 'wpcf7' ) ); ?>)<br />
    218. 

  218. <input type="text" name="fg" class="color oneline option" /></td>
    219. 

  219. 

  220. <td><?php echo esc_html( __( "Background color", 'wpcf7' ) ); ?> (<?php echo esc_html( __( 'optional', 'wpcf7' ) ); ?>)<br />
    221. 

  221. <input type="text" name="bg" class="color oneline option" /></td>
    222. 

  222. </tr>
    223. 

  223. 

  224. <tr><td colspan="2"><?php echo esc_html( __( "Image size", 'wpcf7' ) ); ?> (<?php echo esc_html( __( 'optional', 'wpcf7' ) ); ?>)<br />
    225. 

  225. <input type="checkbox" name="size:s" class="exclusive option" />&nbsp;<?php echo esc_html( __( "Small", 'wpcf7' ) ); ?>&emsp;
    226. 

  226. <input type="checkbox" name="size:m" class="exclusive option" />&nbsp;<?php echo esc_html( __( "Medium", 'wpcf7' ) ); ?>&emsp;
    227. 

  227. <input type="checkbox" name="size:l" class="exclusive option" />&nbsp;<?php echo esc_html( __( "Large", 'wpcf7' ) ); ?>
    228. 

  228. </td></tr>
    229. 

  229. </table>
    230. 

  230. 

  231. <table class="scope captchar">
    232. 

  232. <caption><?php echo esc_html( __( "Input field settings", 'wpcf7' ) ); ?></caption>
    233. 

  233. 

  234. <tr>
    235. 

  235. <td><code>id</code> (<?php echo esc_html( __( 'optional', 'wpcf7' ) ); ?>)<br />
    236. 

  236. <input type="text" name="id" class="idvalue oneline option" /></td>
    237. 

  237. 

  238. <td><code>class</code> (<?php echo esc_html( __( 'optional', 'wpcf7' ) ); ?>)<br />
    239. 

  239. <input type="text" name="class" class="classvalue oneline option" /></td>
    240. 

  240. </tr>
    241. 

  241. 

  242. <tr>
    243. 

  243. <td><code>size</code> (<?php echo esc_html( __( 'optional', 'wpcf7' ) ); ?>)<br />
    244. 

  244. <input type="text" name="size" class="numeric oneline option" /></td>
    245. 

  245. 

  246. <td><code>maxlength</code> (<?php echo esc_html( __( 'optional', 'wpcf7' ) ); ?>)<br />
    247. 

  247. <input type="text" name="maxlength" class="numeric oneline option" /></td>
    248. 

  248. </tr>
    249. 

  249. </table>
    250. 

  250. 

  251. <div class="tg-tag"><?php echo esc_html( __( "Copy this code and paste it into the form left.", 'wpcf7' ) ); ?>
    252. 

  252. <br />1) <?php echo esc_html( __( "For image", 'wpcf7' ) ); ?>
    253. 

  253. <input type="text" name="captchac" class="tag" readonly="readonly" onfocus="this.select()" />
    254. 

  254. <br />2) <?php echo esc_html( __( "For input field", 'wpcf7' ) ); ?>
    255. 

  255. <input type="text" name="captchar" class="tag" readonly="readonly" onfocus="this.select()" />
    256. 

  256. </div>
    257. 

  257. </form>
    258. 

  258. </div>
    259. 

  259. <?php
    260. 

  260. }
    261. 

  261. 

  262. 

  263. /* Warning message */
    264. 

  264. 

  265. add_action( 'wpcf7_admin_before_subsubsub', 'wpcf7_captcha_display_warning_message' );
    266. 

  266. 

  267. function wpcf7_captcha_display_warning_message( &$contact_form ) {
    268. 

  268. 	if ( ! $contact_form )
    269. 

  269. 		return;
    270. 

  270. 

  271. 	$has_tags = (bool) $contact_form->form_scan_shortcode(
    272. 

  272. 		array( 'type' => array( 'captchac' ) ) );
    273. 

  273. 

  274. 	if ( ! $has_tags )
    275. 

  275. 		return;
    276. 

  276. 

  277. 	if ( ! class_exists( 'ReallySimpleCaptcha' ) )
    278. 

  278. 		return;
    279. 

  279. 

  280. 	$uploads_dir = wpcf7_captcha_tmp_dir();
    281. 

  281. 	wpcf7_init_captcha();
    282. 

  282. 

  283. 	if ( ! is_dir( $uploads_dir ) || ! is_writable( $uploads_dir ) ) {
    284. 

  284. 		$message = sprintf( __( 'This contact form contains CAPTCHA fields, but the temporary folder for the files (%s) does not exist or is not writable. You can create the folder or change its permission manually.', 'wpcf7' ), $uploads_dir );
    285. 

  285. 

  286. 		echo '<div class="error"><p><strong>' . esc_html( $message ) . '</strong></p></div>';
    287. 

  287. 	}
    288. 

  288. 

  289. 	if ( ! function_exists( 'imagecreatetruecolor' ) || ! function_exists( 'imagettftext' ) ) {
    290. 

  290. 		$message = __( 'This contact form contains CAPTCHA fields, but the necessary libraries (GD and FreeType) are not available on your server.', 'wpcf7' );
    291. 

  291. 

  292. 		echo '<div class="error"><p><strong>' . esc_html( $message ) . '</strong></p></div>';
    293. 

  293. 	}
    294. 

  294. }
    295. 

  295. 

  296. 

  297. /* CAPTCHA functions */
    298. 

  298. 

  299. function wpcf7_init_captcha() {
    300. 

  300. 	global $wpcf7_captcha;
    301. 

  301. 

  302. 	if ( ! class_exists( 'ReallySimpleCaptcha' ) )
    303. 

  303. 		return false;
    304. 

  304. 

  305. 	if ( ! is_object( $wpcf7_captcha ) )
    306. 

  306. 		$wpcf7_captcha = new ReallySimpleCaptcha();
    307. 

  307. 	$captcha =& $wpcf7_captcha;
    308. 

  308. 

  309. 	$captcha->tmp_dir = trailingslashit( wpcf7_captcha_tmp_dir() );
    310. 

  310. 	wp_mkdir_p( $captcha->tmp_dir );
    311. 

  311. 	return true;
    312. 

  312. }
    313. 

  313. 

  314. function wpcf7_captcha_tmp_dir() {
    315. 

  315. 	if ( defined( 'WPCF7_CAPTCHA_TMP_DIR' ) )
    316. 

  316. 		return WPCF7_CAPTCHA_TMP_DIR;
    317. 

  317. 	else
    318. 

  318. 		return wpcf7_upload_dir( 'dir' ) . '/wpcf7_captcha';
    319. 

  319. }
    320. 

  320. 

  321. function wpcf7_captcha_tmp_url() {
    322. 

  322. 	if ( defined( 'WPCF7_CAPTCHA_TMP_URL' ) )
    323. 

  323. 		return WPCF7_CAPTCHA_TMP_URL;
    324. 

  324. 	else
    325. 

  325. 		return wpcf7_upload_dir( 'url' ) . '/wpcf7_captcha';
    326. 

  326. }
    327. 

  327. 

  328. function wpcf7_generate_captcha( $options = null ) {
    329. 

  329. 	global $wpcf7_captcha;
    330. 

  330. 

  331. 	if ( ! wpcf7_init_captcha() )
    332. 

  332. 		return false;
    333. 

  333. 	$captcha =& $wpcf7_captcha;
    334. 

  334. 

  335. 	if ( ! is_dir( $captcha->tmp_dir ) || ! is_writable( $captcha->tmp_dir ) )
    336. 

  336. 		return false;
    337. 

  337. 

  338. 	$img_type = imagetypes();
    339. 

  339. 	if ( $img_type & IMG_PNG )
    340. 

  340. 		$captcha->img_type = 'png';
    341. 

  341. 	elseif ( $img_type & IMG_GIF )
    342. 

  342. 		$captcha->img_type = 'gif';
    343. 

  343. 	elseif ( $img_type & IMG_JPG )
    344. 

  344. 		$captcha->img_type = 'jpeg';
    345. 

  345. 	else
    346. 

  346. 		return false;
    347. 

  347. 

  348. 	if ( is_array( $options ) ) {
    349. 

  349. 		if ( isset( $options['img_size'] ) )
    350. 

  350. 			$captcha->img_size = $options['img_size'];
    351. 

  351. 		if ( isset( $options['base'] ) )
    352. 

  352. 			$captcha->base = $options['base'];
    353. 

  353. 		if ( isset( $options['font_size'] ) )
    354. 

  354. 			$captcha->font_size = $options['font_size'];
    355. 

  355. 		if ( isset( $options['font_char_width'] ) )
    356. 

  356. 			$captcha->font_char_width = $options['font_char_width'];
    357. 

  357. 		if ( isset( $options['fg'] ) )
    358. 

  358. 			$captcha->fg = $options['fg'];
    359. 

  359. 		if ( isset( $options['bg'] ) )
    360. 

  360. 			$captcha->bg = $options['bg'];
    361. 

  361. 	}
    362. 

  362. 

  363. 	$prefix = mt_rand();
    364. 

  364. 	$captcha_word = $captcha->generate_random_word();
    365. 

  365. 	return $captcha->generate_image( $prefix, $captcha_word );
    366. 

  366. }
    367. 

  367. 

  368. function wpcf7_check_captcha( $prefix, $response ) {
    369. 

  369. 	global $wpcf7_captcha;
    370. 

  370. 

  371. 	if ( ! wpcf7_init_captcha() )
    372. 

  372. 		return false;
    373. 

  373. 	$captcha =& $wpcf7_captcha;
    374. 

  374. 

  375. 	return $captcha->check( $prefix, $response );
    376. 

  376. }
    377. 

  377. 

  378. function wpcf7_remove_captcha( $prefix ) {
    379. 

  379. 	global $wpcf7_captcha;
    380. 

  380. 

  381. 	if ( ! wpcf7_init_captcha() )
    382. 

  382. 		return false;
    383. 

  383. 	$captcha =& $wpcf7_captcha;
    384. 

  384. 

  385. 	if ( preg_match( '/[^0-9]/', $prefix ) ) // Contact Form 7 generates $prefix with mt_rand()
    386. 

  386. 		return false;
    387. 

  387. 

  388. 	$captcha->remove( $prefix );
    389. 

  389. }
    390. 

  390. 

  391. function wpcf7_cleanup_captcha_files() {
    392. 

  392. 	global $wpcf7_captcha;
    393. 

  393. 

  394. 	if ( ! wpcf7_init_captcha() )
    395. 

  395. 		return false;
    396. 

  396. 	$captcha =& $wpcf7_captcha;
    397. 

  397. 

  398. 	if ( is_callable( array( $captcha, 'cleanup' ) ) )
    399. 

  399. 		return $captcha->cleanup();
    400. 

  400. 

  401. 	$dir = trailingslashit( wpcf7_captcha_tmp_dir() );
    402. 

  402. 

  403. 	if ( ! is_dir( $dir ) || ! is_readable( $dir ) || ! is_writable( $dir ) )
    404. 

  404. 		return false;
    405. 

  405. 

  406. 	if ( $handle = @opendir( $dir ) ) {
    407. 

  407. 		while ( false !== ( $file = readdir( $handle ) ) ) {
    408. 

  408. 			if ( ! preg_match( '/^[0-9]+\.(php|png|gif|jpeg)$/', $file ) )
    409. 

  409. 				continue;
    410. 

  410. 

  411. 			$stat = @stat( $dir . $file );
    412. 

  412. 			if ( $stat['mtime'] + 3600 < time() ) // 3600 secs == 1 hour
    413. 

  413. 				@unlink( $dir . $file );
    414. 

  414. 		}
    415. 

  415. 		closedir( $handle );
    416. 

  416. 	}
    417. 

  417. }
    418. 

  418. 

  419. if ( ! is_admin() && 'GET' == $_SERVER['REQUEST_METHOD'] )
    420. 

  420. 	wpcf7_cleanup_captcha_files();
    421. 

  421. 

  422. function wpcf7_captchac_options( $options ) {
    423. 

  423. 	if ( ! is_array( $options ) )
    424. 

  424. 		return array();
    425. 

  425. 

  426. 	$op = array();
    427. 

  427. 	$image_size_array = preg_grep( '%^size:[smlSML]$%', $options );
    428. 

  428. 

  429. 	if ( $image_size = array_shift( $image_size_array ) ) {
    430. 

  430. 		preg_match( '%^size:([smlSML])$%', $image_size, $is_matches );
    431. 

  431. 		switch ( strtolower( $is_matches[1] ) ) {
    432. 

  432. 			case 's':
    433. 

  433. 				$op['img_size'] = array( 60, 20 );
    434. 

  434. 				$op['base'] = array( 6, 15 );
    435. 

  435. 				$op['font_size'] = 11;
    436. 

  436. 				$op['font_char_width'] = 13;
    437. 

  437. 				break;
    438. 

  438. 			case 'l':
    439. 

  439. 				$op['img_size'] = array( 84, 28 );
    440. 

  440. 				$op['base'] = array( 6, 20 );
    441. 

  441. 				$op['font_size'] = 17;
    442. 

  442. 				$op['font_char_width'] = 19;
    443. 

  443. 				break;
    444. 

  444. 			case 'm':
    445. 

  445. 			default:
    446. 

  446. 				$op['img_size'] = array( 72, 24 );
    447. 

  447. 				$op['base'] = array( 6, 18 );
    448. 

  448. 				$op['font_size'] = 14;
    449. 

  449. 				$op['font_char_width'] = 15;
    450. 

  450. 		}
    451. 

  451. 	}
    452. 

  452. 

  453. 	$fg_color_array = preg_grep( '%^fg:#([0-9a-fA-F]{3}|[0-9a-fA-F]{6})$%', $options );
    454. 

  454. 	if ( $fg_color = array_shift( $fg_color_array ) ) {
    455. 

  455. 		preg_match( '%^fg:#([0-9a-fA-F]{3}|[0-9a-fA-F]{6})$%', $fg_color, $fc_matches );
    456. 

  456. 		if ( 3 == strlen( $fc_matches[1] ) ) {
    457. 

  457. 			$r = substr( $fc_matches[1], 0, 1 );
    458. 

  458. 			$g = substr( $fc_matches[1], 1, 1 );
    459. 

  459. 			$b = substr( $fc_matches[1], 2, 1 );
    460. 

  460. 			$op['fg'] = array( hexdec( $r . $r ), hexdec( $g . $g ), hexdec( $b . $b ) );
    461. 

  461. 		} elseif ( 6 == strlen( $fc_matches[1] ) ) {
    462. 

  462. 			$r = substr( $fc_matches[1], 0, 2 );
    463. 

  463. 			$g = substr( $fc_matches[1], 2, 2 );
    464. 

  464. 			$b = substr( $fc_matches[1], 4, 2 );
    465. 

  465. 			$op['fg'] = array( hexdec( $r ), hexdec( $g ), hexdec( $b ) );
    466. 

  466. 		}
    467. 

  467. 	}
    468. 

  468. 

  469. 	$bg_color_array = preg_grep( '%^bg:#([0-9a-fA-F]{3}|[0-9a-fA-F]{6})$%', $options );
    470. 

  470. 	if ( $bg_color = array_shift( $bg_color_array ) ) {
    471. 

  471. 		preg_match( '%^bg:#([0-9a-fA-F]{3}|[0-9a-fA-F]{6})$%', $bg_color, $bc_matches );
    472. 

  472. 		if ( 3 == strlen( $bc_matches[1] ) ) {
    473. 

  473. 			$r = substr( $bc_matches[1], 0, 1 );
    474. 

  474. 			$g = substr( $bc_matches[1], 1, 1 );
    475. 

  475. 			$b = substr( $bc_matches[1], 2, 1 );
    476. 

  476. 			$op['bg'] = array( hexdec( $r . $r ), hexdec( $g . $g ), hexdec( $b . $b ) );
    477. 

  477. 		} elseif ( 6 == strlen( $bc_matches[1] ) ) {
    478. 

  478. 			$r = substr( $bc_matches[1], 0, 2 );
    479. 

  479. 			$g = substr( $bc_matches[1], 2, 2 );
    480. 

  480. 			$b = substr( $bc_matches[1], 4, 2 );
    481. 

  481. 			$op['bg'] = array( hexdec( $r ), hexdec( $g ), hexdec( $b ) );
    482. 

  482. 		}
    483. 

  483. 	}
    484. 

  484. 

  485. 	return $op;
    486. 

  486. }
    487. 

  487. 

  488. $wpcf7_captcha = null;
    489. 

  489. 

  490. ?>
    491.