1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
<?php
/**
** Akismet Filter
** Akismet API: http://akismet.com/development/api/
**/
add_filter( 'wpcf7_spam', 'wpcf7_akismet', 10, 1 );
function wpcf7_akismet( $spam ) {
if ( $spam ) {
return $spam;
}
if ( ! wpcf7_akismet_is_available() ) {
return false;
}
if ( ! $params = wpcf7_akismet_submitted_params() ) {
return false;
}
$c = array();
$c['comment_author'] = $params['author'];
$c['comment_author_email'] = $params['author_email'];
$c['comment_author_url'] = $params['author_url'];
$c['comment_content'] = $params['content'];
$c['blog'] = get_option( 'home' );
$c['blog_lang'] = get_locale();
$c['blog_charset'] = get_option( 'blog_charset' );
$c['user_ip'] = $_SERVER['REMOTE_ADDR'];
$c['user_agent'] = $_SERVER['HTTP_USER_AGENT'];
$c['referrer'] = $_SERVER['HTTP_REFERER'];
// http://blog.akismet.com/2012/06/19/pro-tip-tell-us-your-comment_type/
$c['comment_type'] = 'contact-form';
if ( $permalink = get_permalink() ) {
$c['permalink'] = $permalink;
}
$ignore = array( 'HTTP_COOKIE', 'HTTP_COOKIE2', 'PHP_AUTH_PW' );
foreach ( $_SERVER as $key => $value ) {
if ( ! in_array( $key, (array) $ignore ) ) {
$c["$key"] = $value;
}
}
if ( wpcf7_akismet_comment_check( $c ) ) {
$spam = true;
$submission = WPCF7_Submission::get_instance();
$submission->add_spam_log( array(
'agent' => 'akismet',
'reason' => __( "Akismet returns a spam response.", 'contact-form-7' ),
) );
} else {
$spam = false;
}
return $spam;
}
function wpcf7_akismet_is_available() {
if ( is_callable( array( 'Akismet', 'get_api_key' ) ) ) {
return (bool) Akismet::get_api_key();
}
return false;
}
function wpcf7_akismet_submitted_params() {
$params = array(
'author' => '',
'author_email' => '',
'author_url' => '',
'content' => '',
);
$has_akismet_option = false;
foreach ( (array) $_POST as $key => $val ) {
if ( '_wpcf7' == substr( $key, 0, 6 )
or '_wpnonce' == $key ) {
continue;
}
if ( is_array( $val ) ) {
$val = implode( ', ', wpcf7_array_flatten( $val ) );
}
$val = trim( $val );
if ( 0 == strlen( $val ) ) {
continue;
}
if ( $tags = wpcf7_scan_form_tags( array( 'name' => $key ) ) ) {
$tag = $tags[0];
$akismet = $tag->get_option( 'akismet',
'(author|author_email|author_url)', true );
if ( $akismet ) {
$has_akismet_option = true;
if ( 'author' == $akismet ) {
$params[$akismet] = trim( $params[$akismet] . ' ' . $val );
continue;
} elseif ( '' == $params[$akismet] ) {
$params[$akismet] = $val;
continue;
}
}
}
$params['content'] .= "\n\n" . $val;
}
if ( ! $has_akismet_option ) {
return false;
}
$params['content'] = trim( $params['content'] );
return $params;
}
function wpcf7_akismet_comment_check( $comment ) {
$spam = false;
$query_string = wpcf7_build_query( $comment );
if ( is_callable( array( 'Akismet', 'http_post' ) ) ) {
$response = Akismet::http_post( $query_string, 'comment-check' );
} else {
return $spam;
}
if ( 'true' == $response[1] ) {
$spam = true;
}
if ( $submission = WPCF7_Submission::get_instance() ) {
$submission->akismet = array( 'comment' => $comment, 'spam' => $spam );
}
return apply_filters( 'wpcf7_akismet_comment_check', $spam, $comment );
}