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
152
153
154
155
156
157
158
159
160
|
<?php
/**
* Generates a Photon URL.
*
* @see http://developer.wordpress.com/docs/photon/
*
* @param string $image_url URL to the publicly accessible image you want to manipulate
* @param array|string $args An array of arguments, i.e. array( 'w' => '300', 'resize' => array( 123, 456 ) ), or in string form (w=123&h=456)
* @return string The raw final URL. You should run this through esc_url() before displaying it.
*/
function jetpack_photon_url( $image_url, $args = array(), $scheme = null ) {
$image_url = trim( $image_url );
$image_url = apply_filters( 'jetpack_photon_pre_image_url', $image_url, $args, $scheme );
$args = apply_filters( 'jetpack_photon_pre_args', $args, $image_url, $scheme );
if ( empty( $image_url ) )
return $image_url;
$image_url_parts = @parse_url( $image_url );
// Unable to parse
if ( ! is_array( $image_url_parts ) || empty( $image_url_parts['host'] ) || empty( $image_url_parts['path'] ) )
return $image_url;
if ( is_array( $args ) ){
// Convert values that are arrays into strings
foreach ( $args as $arg => $value ) {
if ( is_array( $value ) ) {
$args[$arg] = implode( ',', $value );
}
}
// Encode values
// See http://core.trac.wordpress.org/ticket/17923
$args = rawurlencode_deep( $args );
}
// You can't run a Photon URL through Photon again because query strings are stripped.
// So if the image is already a Photon URL, append the new arguments to the existing URL.
if ( in_array( $image_url_parts['host'], array( 'i0.wp.com', 'i1.wp.com', 'i2.wp.com' ) ) ) {
$photon_url = add_query_arg( $args, $image_url );
return jetpack_photon_url_scheme( $photon_url, $scheme );
}
// This setting is Photon Server dependent
if ( ! apply_filters( 'jetpack_photon_any_extension_for_domain', false, $image_url_parts['host'] ) ) {
// Photon doesn't support query strings so we ignore them and look only at the path.
// However some source images are served via PHP so check the no-query-string extension.
// For future proofing, this is a blacklist of common issues rather than a whitelist.
$extension = pathinfo( $image_url_parts['path'], PATHINFO_EXTENSION );
if ( empty( $extension ) || in_array( $extension, array( 'php' ) ) )
return $image_url;
}
$image_host_path = $image_url_parts['host'] . $image_url_parts['path'];
// Figure out which CDN subdomain to use
srand( crc32( $image_host_path ) );
$subdomain = rand( 0, 2 );
srand();
$photon_url = "http://i{$subdomain}.wp.com/$image_host_path";
// This setting is Photon Server dependent
if ( isset( $image_url_parts['query'] ) && apply_filters( 'jetpack_photon_add_query_string_to_domain', false, $image_url_parts['host'] ) ) {
$photon_url .= '?q=' . rawurlencode( $image_url_parts['query'] );
}
if ( $args ) {
if ( is_array( $args ) ) {
$photon_url = add_query_arg( $args, $photon_url );
} else {
// You can pass a query string for complicated requests but where you still want CDN subdomain help, etc.
$photon_url .= '?' . $args;
}
}
return jetpack_photon_url_scheme( $photon_url, $scheme );
}
add_filter( 'jetpack_photon_url', 'jetpack_photon_url', 10, 3 );
/**
* WordPress.com
*
* If a cropped WP.com-hosted image is the source image, have Photon replicate the crop.
*/
add_filter( 'jetpack_photon_pre_args', 'jetpack_photon_parse_wpcom_query_args', 10, 2 );
function jetpack_photon_parse_wpcom_query_args( $args, $image_url ) {
$parsed_url = @parse_url( $image_url );
if ( ! $parsed_url )
return $args;
$image_url_parts = wp_parse_args( $parsed_url, array(
'host' => '',
'query' => ''
) );
if ( '.files.wordpress.com' != substr( $image_url_parts['host'], -20 ) )
return $args;
if ( empty( $image_url_parts['query'] ) )
return $args;
$wpcom_args = wp_parse_args( $image_url_parts['query'] );
if ( empty( $wpcom_args['w'] ) || empty( $wpcom_args['h'] ) )
return $args;
// Keep the crop by using "resize"
if ( ! empty( $wpcom_args['crop'] ) ) {
if ( is_array( $args ) ) {
$args = array_merge( array( 'resize' => array( $wpcom_args['w'], $wpcom_args['h'] ) ), $args );
} else {
$args = 'resize=' . rawurlencode( absint( $wpcom_args['w'] ) . ',' . absint( $wpcom_args['h'] ) ) . '&' . $args;
}
} else {
if ( is_array( $args ) ) {
$args = array_merge( array( 'fit' => array( $wpcom_args['w'], $wpcom_args['h'] ) ), $args );
} else {
$args = 'fit=' . rawurlencode( absint( $wpcom_args['w'] ) . ',' . absint( $wpcom_args['h'] ) ) . '&' . $args;
}
}
return $args;
}
/**
* Facebook
*/
add_filter( 'jetpack_photon_add_query_string_to_domain', 'jetpack_photon_allow_facebook_graph_domain', 10, 2 );
add_filter( 'jetpack_photon_any_extension_for_domain', 'jetpack_photon_allow_facebook_graph_domain', 10, 2 );
function jetpack_photon_url_scheme( $url, $scheme ) {
if ( ! in_array( $scheme, array( 'http', 'https', 'network_path' ) ) ) {
$scheme = is_ssl() ? 'https' : 'http';
}
if ( 'network_path' == $scheme ) {
$scheme_slashes = '//';
} else {
$scheme_slashes = "$scheme://";
}
return preg_replace( '#^[a-z:]+//#i', $scheme_slashes, $url );
}
function jetpack_photon_allow_facebook_graph_domain( $allow = false, $domain ) {
switch ( $domain ) {
case 'graph.facebook.com' :
return true;
}
return $allow;
}
|
GitWeb