File: /var/www/samok164/data/www2/obryadi.ru/wp-content/plugins/contact-form-7/modules/captcha.php
<?php
/**
** A base module for [captchac] and [captchar]
**/
/* Shortcode handler */
wpcf7_add_shortcode( 'captchac', 'wpcf7_captcha_shortcode_handler', true );
wpcf7_add_shortcode( 'captchar', 'wpcf7_captcha_shortcode_handler', true );
function wpcf7_captcha_shortcode_handler( $tag ) {
if ( ! is_array( $tag ) )
return '';
$type = $tag['type'];
$name = $tag['name'];
$options = (array) $tag['options'];
$values = (array) $tag['values'];
if ( empty( $name ) )
return '';
$validation_error = wpcf7_get_validation_error( $name );
$atts = $id_att = $size_att = $maxlength_att = $tabindex_att = $title_att = '';
$class_att = wpcf7_form_controls_class( $type );
if ( 'captchac' == $type )
$class_att .= ' wpcf7-captcha-' . $name;
if ( $validation_error && 'captchar' == $type )
$class_att .= ' wpcf7-not-valid';
foreach ( $options as $option ) {
if ( preg_match( '%^id:([-0-9a-zA-Z_]+)$%', $option, $matches ) ) {
$id_att = $matches[1];
} elseif ( preg_match( '%^class:([-0-9a-zA-Z_]+)$%', $option, $matches ) ) {
$class_att .= ' ' . $matches[1];
} elseif ( preg_match( '%^([0-9]*)[/x]([0-9]*)$%', $option, $matches ) ) {
$size_att = (int) $matches[1];
$maxlength_att = (int) $matches[2];
} elseif ( preg_match( '%^tabindex:(\d+)$%', $option, $matches ) ) {
$tabindex_att = (int) $matches[1];
}
}
// Value.
$value = '';
if ( 'captchar' == $type && ! wpcf7_is_posted() && isset( $values[0] ) ) {
$value = $values[0];
if ( wpcf7_script_is() && preg_grep( '%^watermark$%', $options ) ) {
$class_att .= ' wpcf7-use-title-as-watermark';
$title_att .= sprintf( ' %s', $value );
$value = '';
}
}
if ( $id_att )
$atts .= ' id="' . trim( $id_att ) . '"';
if ( $class_att )
$atts .= ' class="' . trim( $class_att ) . '"';
if ( 'captchac' == $type ) {
if ( ! class_exists( 'ReallySimpleCaptcha' ) ) {
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>';
}
$op = array();
// Default
$op['img_size'] = array( 72, 24 );
$op['base'] = array( 6, 18 );
$op['font_size'] = 14;
$op['font_char_width'] = 15;
$op = array_merge( $op, wpcf7_captchac_options( $options ) );
if ( ! $filename = wpcf7_generate_captcha( $op ) )
return '';
if ( is_array( $op['img_size'] ) )
$atts .= ' width="' . $op['img_size'][0] . '" height="' . $op['img_size'][1] . '"';
$captcha_url = trailingslashit( wpcf7_captcha_tmp_url() ) . $filename;
$html = '<img alt="captcha" src="' . $captcha_url . '"' . $atts . ' />';
$ref = substr( $filename, 0, strrpos( $filename, '.' ) );
$html = '<input type="hidden" name="_wpcf7_captcha_challenge_' . $name . '" value="' . $ref . '" />' . $html;
return $html;
} elseif ( 'captchar' == $type ) {
if ( $size_att )
$atts .= ' size="' . $size_att . '"';
else
$atts .= ' size="40"'; // default size
if ( $maxlength_att )
$atts .= ' maxlength="' . $maxlength_att . '"';
if ( '' !== $tabindex_att )
$atts .= sprintf( ' tabindex="%d"', $tabindex_att );
if ( '' !== $title_att )
$atts .= sprintf( ' title="%s"', trim( esc_attr( $title_att ) ) );
$html = '<input type="text" name="' . $name . '" value="' . esc_attr( $value ) . '"' . $atts . ' />';
$html = '<span class="wpcf7-form-control-wrap ' . $name . '">' . $html . $validation_error . '</span>';
return $html;
}
}
/* Validation filter */
add_filter( 'wpcf7_validate_captchar', 'wpcf7_captcha_validation_filter', 10, 2 );
function wpcf7_captcha_validation_filter( $result, $tag ) {
$type = $tag['type'];
$name = $tag['name'];
$_POST[$name] = (string) $_POST[$name];
$captchac = '_wpcf7_captcha_challenge_' . $name;
if ( ! wpcf7_check_captcha( $_POST[$captchac], $_POST[$name] ) ) {
$result['valid'] = false;
$result['reason'][$name] = wpcf7_get_message( 'captcha_not_match' );
}
wpcf7_remove_captcha( $_POST[$captchac] );
return $result;
}
/* Ajax echo filter */
add_filter( 'wpcf7_ajax_onload', 'wpcf7_captcha_ajax_refill' );
add_filter( 'wpcf7_ajax_json_echo', 'wpcf7_captcha_ajax_refill' );
function wpcf7_captcha_ajax_refill( $items ) {
if ( ! is_array( $items ) )
return $items;
$fes = wpcf7_scan_shortcode( array( 'type' => 'captchac' ) );
if ( empty( $fes ) )
return $items;
$refill = array();
foreach ( $fes as $fe ) {
$name = $fe['name'];
$options = $fe['options'];
if ( empty( $name ) )
continue;
$op = wpcf7_captchac_options( $options );
if ( $filename = wpcf7_generate_captcha( $op ) ) {
$captcha_url = trailingslashit( wpcf7_captcha_tmp_url() ) . $filename;
$refill[$name] = $captcha_url;
}
}
if ( ! empty( $refill ) )
$items['captcha'] = $refill;
return $items;
}
/* Messages */
add_filter( 'wpcf7_messages', 'wpcf7_captcha_messages' );
function wpcf7_captcha_messages( $messages ) {
return array_merge( $messages, array( 'captcha_not_match' => array(
'description' => __( "The code that sender entered does not match the CAPTCHA", 'wpcf7' ),
'default' => __( 'Your entered code is incorrect.', 'wpcf7' )
) ) );
}
/* Tag generator */
add_action( 'admin_init', 'wpcf7_add_tag_generator_captcha', 45 );
function wpcf7_add_tag_generator_captcha() {
if ( ! function_exists( 'wpcf7_add_tag_generator' ) )
return;
wpcf7_add_tag_generator( 'captcha', __( 'CAPTCHA', 'wpcf7' ),
'wpcf7-tg-pane-captcha', 'wpcf7_tg_pane_captcha' );
}
function wpcf7_tg_pane_captcha( &$contact_form ) {
?>
<div id="wpcf7-tg-pane-captcha" class="hidden">
<form action="">
<table>
<?php if ( ! class_exists( 'ReallySimpleCaptcha' ) ) : ?>
<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>
<?php endif; ?>
<tr><td><?php echo esc_html( __( 'Name', 'wpcf7' ) ); ?><br /><input type="text" name="name" class="tg-name oneline" /></td><td></td></tr>
</table>
<table class="scope captchac">
<caption><?php echo esc_html( __( "Image settings", 'wpcf7' ) ); ?></caption>
<tr>
<td><code>id</code> (<?php echo esc_html( __( 'optional', 'wpcf7' ) ); ?>)<br />
<input type="text" name="id" class="idvalue oneline option" /></td>
<td><code>class</code> (<?php echo esc_html( __( 'optional', 'wpcf7' ) ); ?>)<br />
<input type="text" name="class" class="classvalue oneline option" /></td>
</tr>
<tr>
<td><?php echo esc_html( __( "Foreground color", 'wpcf7' ) ); ?> (<?php echo esc_html( __( 'optional', 'wpcf7' ) ); ?>)<br />
<input type="text" name="fg" class="color oneline option" /></td>
<td><?php echo esc_html( __( "Background color", 'wpcf7' ) ); ?> (<?php echo esc_html( __( 'optional', 'wpcf7' ) ); ?>)<br />
<input type="text" name="bg" class="color oneline option" /></td>
</tr>
<tr><td colspan="2"><?php echo esc_html( __( "Image size", 'wpcf7' ) ); ?> (<?php echo esc_html( __( 'optional', 'wpcf7' ) ); ?>)<br />
<input type="checkbox" name="size:s" class="exclusive option" /> <?php echo esc_html( __( "Small", 'wpcf7' ) ); ?> 
<input type="checkbox" name="size:m" class="exclusive option" /> <?php echo esc_html( __( "Medium", 'wpcf7' ) ); ?> 
<input type="checkbox" name="size:l" class="exclusive option" /> <?php echo esc_html( __( "Large", 'wpcf7' ) ); ?>
</td></tr>
</table>
<table class="scope captchar">
<caption><?php echo esc_html( __( "Input field settings", 'wpcf7' ) ); ?></caption>
<tr>
<td><code>id</code> (<?php echo esc_html( __( 'optional', 'wpcf7' ) ); ?>)<br />
<input type="text" name="id" class="idvalue oneline option" /></td>
<td><code>class</code> (<?php echo esc_html( __( 'optional', 'wpcf7' ) ); ?>)<br />
<input type="text" name="class" class="classvalue oneline option" /></td>
</tr>
<tr>
<td><code>size</code> (<?php echo esc_html( __( 'optional', 'wpcf7' ) ); ?>)<br />
<input type="text" name="size" class="numeric oneline option" /></td>
<td><code>maxlength</code> (<?php echo esc_html( __( 'optional', 'wpcf7' ) ); ?>)<br />
<input type="text" name="maxlength" class="numeric oneline option" /></td>
</tr>
</table>
<div class="tg-tag"><?php echo esc_html( __( "Copy this code and paste it into the form left.", 'wpcf7' ) ); ?>
<br />1) <?php echo esc_html( __( "For image", 'wpcf7' ) ); ?>
<input type="text" name="captchac" class="tag" readonly="readonly" onfocus="this.select()" />
<br />2) <?php echo esc_html( __( "For input field", 'wpcf7' ) ); ?>
<input type="text" name="captchar" class="tag" readonly="readonly" onfocus="this.select()" />
</div>
</form>
</div>
<?php
}
/* Warning message */
add_action( 'wpcf7_admin_notices', 'wpcf7_captcha_display_warning_message' );
function wpcf7_captcha_display_warning_message() {
if ( empty( $_GET['post'] ) || ! $contact_form = wpcf7_contact_form( $_GET['post'] ) )
return;
$has_tags = (bool) $contact_form->form_scan_shortcode(
array( 'type' => array( 'captchac' ) ) );
if ( ! $has_tags )
return;
if ( ! class_exists( 'ReallySimpleCaptcha' ) )
return;
$uploads_dir = wpcf7_captcha_tmp_dir();
wpcf7_init_captcha();
if ( ! is_dir( $uploads_dir ) || ! is_writable( $uploads_dir ) ) {
$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 );
echo '<div class="error"><p><strong>' . esc_html( $message ) . '</strong></p></div>';
}
if ( ! function_exists( 'imagecreatetruecolor' ) || ! function_exists( 'imagettftext' ) ) {
$message = __( 'This contact form contains CAPTCHA fields, but the necessary libraries (GD and FreeType) are not available on your server.', 'wpcf7' );
echo '<div class="error"><p><strong>' . esc_html( $message ) . '</strong></p></div>';
}
}
/* CAPTCHA functions */
function wpcf7_init_captcha() {
global $wpcf7_captcha;
if ( ! class_exists( 'ReallySimpleCaptcha' ) )
return false;
if ( ! is_object( $wpcf7_captcha ) )
$wpcf7_captcha = new ReallySimpleCaptcha();
$dir = trailingslashit( wpcf7_captcha_tmp_dir() );
$wpcf7_captcha->tmp_dir = $dir;
if ( is_callable( array( $wpcf7_captcha, 'make_tmp_dir' ) ) )
return $wpcf7_captcha->make_tmp_dir();
if ( ! wp_mkdir_p( $dir ) )
return false;
$htaccess_file = $dir . '.htaccess';
if ( file_exists( $htaccess_file ) )
return true;
if ( $handle = @fopen( $htaccess_file, 'w' ) ) {
fwrite( $handle, 'Order deny,allow' . "\n" );
fwrite( $handle, 'Deny from all' . "\n" );
fwrite( $handle, '<Files ~ "^[0-9A-Za-z]+\\.(jpeg|gif|png)$">' . "\n" );
fwrite( $handle, ' Allow from all' . "\n" );
fwrite( $handle, '</Files>' . "\n" );
fclose( $handle );
}
return true;
}
function wpcf7_captcha_tmp_dir() {
if ( defined( 'WPCF7_CAPTCHA_TMP_DIR' ) )
return WPCF7_CAPTCHA_TMP_DIR;
else
return wpcf7_upload_dir( 'dir' ) . '/wpcf7_captcha';
}
function wpcf7_captcha_tmp_url() {
if ( defined( 'WPCF7_CAPTCHA_TMP_URL' ) )
return WPCF7_CAPTCHA_TMP_URL;
else
return wpcf7_upload_dir( 'url' ) . '/wpcf7_captcha';
}
function wpcf7_generate_captcha( $options = null ) {
global $wpcf7_captcha;
if ( ! wpcf7_init_captcha() )
return false;
if ( ! is_dir( $wpcf7_captcha->tmp_dir ) || ! is_writable( $wpcf7_captcha->tmp_dir ) )
return false;
$img_type = imagetypes();
if ( $img_type & IMG_PNG )
$wpcf7_captcha->img_type = 'png';
elseif ( $img_type & IMG_GIF )
$wpcf7_captcha->img_type = 'gif';
elseif ( $img_type & IMG_JPG )
$wpcf7_captcha->img_type = 'jpeg';
else
return false;
if ( is_array( $options ) ) {
if ( isset( $options['img_size'] ) )
$wpcf7_captcha->img_size = $options['img_size'];
if ( isset( $options['base'] ) )
$wpcf7_captcha->base = $options['base'];
if ( isset( $options['font_size'] ) )
$wpcf7_captcha->font_size = $options['font_size'];
if ( isset( $options['font_char_width'] ) )
$wpcf7_captcha->font_char_width = $options['font_char_width'];
if ( isset( $options['fg'] ) )
$wpcf7_captcha->fg = $options['fg'];
if ( isset( $options['bg'] ) )
$wpcf7_captcha->bg = $options['bg'];
}
$prefix = mt_rand();
$captcha_word = $wpcf7_captcha->generate_random_word();
return $wpcf7_captcha->generate_image( $prefix, $captcha_word );
}
function wpcf7_check_captcha( $prefix, $response ) {
global $wpcf7_captcha;
if ( ! wpcf7_init_captcha() )
return false;
return $wpcf7_captcha->check( $prefix, $response );
}
function wpcf7_remove_captcha( $prefix ) {
global $wpcf7_captcha;
if ( ! wpcf7_init_captcha() )
return false;
if ( preg_match( '/[^0-9]/', $prefix ) ) // Contact Form 7 generates $prefix with mt_rand()
return false;
$wpcf7_captcha->remove( $prefix );
}
function wpcf7_cleanup_captcha_files() {
global $wpcf7_captcha;
if ( ! wpcf7_init_captcha() )
return false;
if ( is_callable( array( $wpcf7_captcha, 'cleanup' ) ) )
return $wpcf7_captcha->cleanup();
$dir = trailingslashit( wpcf7_captcha_tmp_dir() );
if ( ! is_dir( $dir ) || ! is_readable( $dir ) || ! is_writable( $dir ) )
return false;
if ( $handle = @opendir( $dir ) ) {
while ( false !== ( $file = readdir( $handle ) ) ) {
if ( ! preg_match( '/^[0-9]+\.(php|txt|png|gif|jpeg)$/', $file ) )
continue;
$stat = @stat( $dir . $file );
if ( $stat['mtime'] + 3600 < time() ) // 3600 secs == 1 hour
@unlink( $dir . $file );
}
closedir( $handle );
}
}
if ( ! is_admin() && 'GET' == $_SERVER['REQUEST_METHOD'] )
wpcf7_cleanup_captcha_files();
function wpcf7_captchac_options( $options ) {
if ( ! is_array( $options ) )
return array();
$op = array();
$image_size_array = preg_grep( '%^size:[smlSML]$%', $options );
if ( $image_size = array_shift( $image_size_array ) ) {
preg_match( '%^size:([smlSML])$%', $image_size, $is_matches );
switch ( strtolower( $is_matches[1] ) ) {
case 's':
$op['img_size'] = array( 60, 20 );
$op['base'] = array( 6, 15 );
$op['font_size'] = 11;
$op['font_char_width'] = 13;
break;
case 'l':
$op['img_size'] = array( 84, 28 );
$op['base'] = array( 6, 20 );
$op['font_size'] = 17;
$op['font_char_width'] = 19;
break;
case 'm':
default:
$op['img_size'] = array( 72, 24 );
$op['base'] = array( 6, 18 );
$op['font_size'] = 14;
$op['font_char_width'] = 15;
}
}
$fg_color_array = preg_grep( '%^fg:#([0-9a-fA-F]{3}|[0-9a-fA-F]{6})$%', $options );
if ( $fg_color = array_shift( $fg_color_array ) ) {
preg_match( '%^fg:#([0-9a-fA-F]{3}|[0-9a-fA-F]{6})$%', $fg_color, $fc_matches );
if ( 3 == strlen( $fc_matches[1] ) ) {
$r = substr( $fc_matches[1], 0, 1 );
$g = substr( $fc_matches[1], 1, 1 );
$b = substr( $fc_matches[1], 2, 1 );
$op['fg'] = array( hexdec( $r . $r ), hexdec( $g . $g ), hexdec( $b . $b ) );
} elseif ( 6 == strlen( $fc_matches[1] ) ) {
$r = substr( $fc_matches[1], 0, 2 );
$g = substr( $fc_matches[1], 2, 2 );
$b = substr( $fc_matches[1], 4, 2 );
$op['fg'] = array( hexdec( $r ), hexdec( $g ), hexdec( $b ) );
}
}
$bg_color_array = preg_grep( '%^bg:#([0-9a-fA-F]{3}|[0-9a-fA-F]{6})$%', $options );
if ( $bg_color = array_shift( $bg_color_array ) ) {
preg_match( '%^bg:#([0-9a-fA-F]{3}|[0-9a-fA-F]{6})$%', $bg_color, $bc_matches );
if ( 3 == strlen( $bc_matches[1] ) ) {
$r = substr( $bc_matches[1], 0, 1 );
$g = substr( $bc_matches[1], 1, 1 );
$b = substr( $bc_matches[1], 2, 1 );
$op['bg'] = array( hexdec( $r . $r ), hexdec( $g . $g ), hexdec( $b . $b ) );
} elseif ( 6 == strlen( $bc_matches[1] ) ) {
$r = substr( $bc_matches[1], 0, 2 );
$g = substr( $bc_matches[1], 2, 2 );
$b = substr( $bc_matches[1], 4, 2 );
$op['bg'] = array( hexdec( $r ), hexdec( $g ), hexdec( $b ) );
}
}
return $op;
}
$wpcf7_captcha = null;
?>