1
|
|
|
<?php |
2
|
|
|
|
3
|
|
|
/** |
4
|
|
|
* Generates a Photon URL. |
5
|
|
|
* |
6
|
|
|
* @see http://developer.wordpress.com/docs/photon/ |
7
|
|
|
* |
8
|
|
|
* @param string $image_url URL to the publicly accessible image you want to manipulate |
9
|
|
|
* @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) |
10
|
|
|
* @return string The raw final URL. You should run this through esc_url() before displaying it. |
11
|
|
|
*/ |
12
|
|
|
function jetpack_photon_url( $image_url, $args = array(), $scheme = null ) { |
13
|
|
|
$image_url = trim( $image_url ); |
14
|
|
|
|
15
|
|
|
if ( class_exists( 'Jetpack') ) { |
16
|
|
|
/** |
17
|
|
|
* Disables Photon URL processing for local development |
18
|
|
|
* |
19
|
|
|
* @module photon |
20
|
|
|
* |
21
|
|
|
* @since 4.1.0 |
22
|
|
|
* |
23
|
|
|
* @param bool false Result of Jetpack::is_development_mode. |
24
|
|
|
*/ |
25
|
|
|
if ( true === apply_filters( 'jetpack_photon_development_mode', Jetpack::is_development_mode() ) ) { |
26
|
|
|
return $image_url; |
27
|
|
|
} |
28
|
|
|
} |
29
|
|
|
|
30
|
|
|
/** |
31
|
|
|
* Allow specific image URls to avoid going through Photon. |
32
|
|
|
* |
33
|
|
|
* @module photon |
34
|
|
|
* |
35
|
|
|
* @since 3.2.0 |
36
|
|
|
* |
37
|
|
|
* @param bool false Should the image be returned as is, without going through Photon. Default to false. |
38
|
|
|
* @param string $image_url Image URL. |
39
|
|
|
* @param array|string $args Array of Photon arguments. |
40
|
|
|
* @param string|null $scheme Image scheme. Default to null. |
41
|
|
|
*/ |
42
|
|
|
if ( false !== apply_filters( 'jetpack_photon_skip_for_url', false, $image_url, $args, $scheme ) ) { |
43
|
|
|
return $image_url; |
44
|
|
|
} |
45
|
|
|
|
46
|
|
|
/** |
47
|
|
|
* Filter the original image URL before it goes through Photon. |
48
|
|
|
* |
49
|
|
|
* @module photon |
50
|
|
|
* |
51
|
|
|
* @since 1.9.0 |
52
|
|
|
* |
53
|
|
|
* @param string $image_url Image URL. |
54
|
|
|
* @param array|string $args Array of Photon arguments. |
55
|
|
|
* @param string|null $scheme Image scheme. Default to null. |
56
|
|
|
*/ |
57
|
|
|
$image_url = apply_filters( 'jetpack_photon_pre_image_url', $image_url, $args, $scheme ); |
58
|
|
|
/** |
59
|
|
|
* Filter the original Photon image parameters before Photon is applied to an image. |
60
|
|
|
* |
61
|
|
|
* @module photon |
62
|
|
|
* |
63
|
|
|
* @since 1.9.0 |
64
|
|
|
* |
65
|
|
|
* @param array|string $args Array of Photon arguments. |
66
|
|
|
* @param string $image_url Image URL. |
67
|
|
|
* @param string|null $scheme Image scheme. Default to null. |
68
|
|
|
*/ |
69
|
|
|
$args = apply_filters( 'jetpack_photon_pre_args', $args, $image_url, $scheme ); |
70
|
|
|
|
71
|
|
|
if ( empty( $image_url ) ) |
72
|
|
|
return $image_url; |
73
|
|
|
|
74
|
|
|
$image_url_parts = @jetpack_photon_parse_url( $image_url ); |
75
|
|
|
|
76
|
|
|
// Unable to parse |
77
|
|
|
if ( ! is_array( $image_url_parts ) || empty( $image_url_parts['host'] ) || empty( $image_url_parts['path'] ) ) |
78
|
|
|
return $image_url; |
79
|
|
|
|
80
|
|
|
if ( is_array( $args ) ){ |
81
|
|
|
// Convert values that are arrays into strings |
82
|
|
|
foreach ( $args as $arg => $value ) { |
83
|
|
|
if ( is_array( $value ) ) { |
84
|
|
|
$args[$arg] = implode( ',', $value ); |
85
|
|
|
} |
86
|
|
|
} |
87
|
|
|
|
88
|
|
|
// Encode values |
89
|
|
|
// See http://core.trac.wordpress.org/ticket/17923 |
90
|
|
|
$args = rawurlencode_deep( $args ); |
91
|
|
|
} |
92
|
|
|
|
93
|
|
|
/* Don't photon-ize WPCOM hosted images with only the following url args: |
94
|
|
|
* `w`, `h`, `fit`, `crop`, `zoom`, `strip`, `resize`, `quality` |
95
|
|
|
* These args can just be added to the wpcom-version of the image, and save on latency. |
96
|
|
|
*/ |
97
|
|
|
$is_wpcom_image_with_safe_args = false; |
98
|
|
|
$allowed_wpcom_keys = array( |
99
|
|
|
'w' => true, |
100
|
|
|
'h' => true, |
101
|
|
|
'fit' => true, |
102
|
|
|
'crop' => true, |
103
|
|
|
'zoom' => true, |
104
|
|
|
'strip' => true, |
105
|
|
|
'resize' => true, |
106
|
|
|
'quality' => true, |
107
|
|
|
); |
108
|
|
|
if ( wp_endswith( strtolower( $image_url_parts['host'] ), '.files.wordpress.com' ) && ! array_diff_key( $args, $allowed_wpcom_keys ) ) { |
109
|
|
|
$is_wpcom_image_with_safe_args = true; |
110
|
|
|
} |
111
|
|
|
|
112
|
|
|
/** This filter is documented below. */ |
113
|
|
|
$custom_photon_url = apply_filters( 'jetpack_photon_domain', '', $image_url ); |
114
|
|
|
$custom_photon_url = esc_url( $custom_photon_url ); |
115
|
|
|
|
116
|
|
|
// You can't run a Photon URL through Photon again because query strings are stripped. |
117
|
|
|
// So if the image is already a Photon URL, append the new arguments to the existing URL. |
118
|
|
|
// Alternately, if it's a *.files.wordpress.com url, and the arguments are supported, keep the domain. |
119
|
|
|
if ( |
120
|
|
|
in_array( $image_url_parts['host'], array( 'i0.wp.com', 'i1.wp.com', 'i2.wp.com' ) ) |
121
|
|
|
|| $image_url_parts['host'] === jetpack_photon_parse_url( $custom_photon_url, PHP_URL_HOST ) |
122
|
|
|
|| $is_wpcom_image_with_safe_args |
123
|
|
|
) { |
124
|
|
|
$photon_url = add_query_arg( $args, $image_url ); |
125
|
|
|
return jetpack_photon_url_scheme( $photon_url, $scheme ); |
126
|
|
|
} |
127
|
|
|
|
128
|
|
|
/** |
129
|
|
|
* Allow Photon to use query strings as well. |
130
|
|
|
* By default, Photon doesn't support query strings so we ignore them and look only at the path. |
131
|
|
|
* This setting is Photon Server dependent. |
132
|
|
|
* |
133
|
|
|
* @module photon |
134
|
|
|
* |
135
|
|
|
* @since 1.9.0 |
136
|
|
|
* |
137
|
|
|
* @param bool false Should images using query strings go through Photon. Default is false. |
138
|
|
|
* @param string $image_url_parts['host'] Image URL's host. |
139
|
|
|
*/ |
140
|
|
|
if ( ! apply_filters( 'jetpack_photon_any_extension_for_domain', false, $image_url_parts['host'] ) ) { |
141
|
|
|
// Photon doesn't support query strings so we ignore them and look only at the path. |
142
|
|
|
// However some source images are served via PHP so check the no-query-string extension. |
143
|
|
|
// For future proofing, this is a blacklist of common issues rather than a whitelist. |
144
|
|
|
$extension = pathinfo( $image_url_parts['path'], PATHINFO_EXTENSION ); |
145
|
|
|
if ( empty( $extension ) || in_array( $extension, array( 'php', 'ashx' ) ) ) |
146
|
|
|
return $image_url; |
147
|
|
|
} |
148
|
|
|
|
149
|
|
|
$image_host_path = $image_url_parts['host'] . $image_url_parts['path']; |
150
|
|
|
|
151
|
|
|
// Figure out which CDN subdomain to use |
152
|
|
|
srand( crc32( $image_host_path ) ); |
153
|
|
|
$subdomain = rand( 0, 2 ); |
154
|
|
|
srand(); |
155
|
|
|
|
156
|
|
|
/** |
157
|
|
|
* Filters the domain used by the Photon module. |
158
|
|
|
* |
159
|
|
|
* @module photon |
160
|
|
|
* |
161
|
|
|
* @since 3.4.2 |
162
|
|
|
* |
163
|
|
|
* @param string https://i{$subdomain}.wp.com Domain used by Photon. $subdomain is a random number between 0 and 2. |
164
|
|
|
* @param string $image_url URL of the image to be photonized. |
165
|
|
|
*/ |
166
|
|
|
$photon_domain = apply_filters( 'jetpack_photon_domain', "https://i{$subdomain}.wp.com", $image_url ); |
167
|
|
|
$photon_domain = trailingslashit( esc_url( $photon_domain ) ); |
168
|
|
|
$photon_url = $photon_domain . $image_host_path; |
169
|
|
|
|
170
|
|
|
/** |
171
|
|
|
* Add query strings to Photon URL. |
172
|
|
|
* By default, Photon doesn't support query strings so we ignore them. |
173
|
|
|
* This setting is Photon Server dependent. |
174
|
|
|
* |
175
|
|
|
* @module photon |
176
|
|
|
* |
177
|
|
|
* @since 1.9.0 |
178
|
|
|
* |
179
|
|
|
* @param bool false Should query strings be added to the image URL. Default is false. |
180
|
|
|
* @param string $image_url_parts['host'] Image URL's host. |
181
|
|
|
*/ |
182
|
|
|
if ( isset( $image_url_parts['query'] ) && apply_filters( 'jetpack_photon_add_query_string_to_domain', false, $image_url_parts['host'] ) ) { |
183
|
|
|
$photon_url .= '?q=' . rawurlencode( $image_url_parts['query'] ); |
184
|
|
|
} |
185
|
|
|
|
186
|
|
|
if ( $args ) { |
187
|
|
|
if ( is_array( $args ) ) { |
188
|
|
|
$photon_url = add_query_arg( $args, $photon_url ); |
189
|
|
|
} else { |
190
|
|
|
// You can pass a query string for complicated requests but where you still want CDN subdomain help, etc. |
191
|
|
|
$photon_url .= '?' . $args; |
192
|
|
|
} |
193
|
|
|
} |
194
|
|
|
|
195
|
|
|
if ( isset( $image_url_parts['scheme'] ) && 'https' == $image_url_parts['scheme'] ) { |
196
|
|
|
$photon_url = add_query_arg( array( 'ssl' => 1 ), $photon_url ); |
197
|
|
|
} |
198
|
|
|
|
199
|
|
|
return jetpack_photon_url_scheme( $photon_url, $scheme ); |
200
|
|
|
} |
201
|
|
|
add_filter( 'jetpack_photon_url', 'jetpack_photon_url', 10, 3 ); |
202
|
|
|
|
203
|
|
|
/** |
204
|
|
|
* WordPress.com |
205
|
|
|
* |
206
|
|
|
* If a cropped WP.com-hosted image is the source image, have Photon replicate the crop. |
207
|
|
|
*/ |
208
|
|
|
add_filter( 'jetpack_photon_pre_args', 'jetpack_photon_parse_wpcom_query_args', 10, 2 ); |
209
|
|
|
|
210
|
|
|
function jetpack_photon_parse_wpcom_query_args( $args, $image_url ) { |
211
|
|
|
$parsed_url = @parse_url( $image_url ); |
212
|
|
|
|
213
|
|
|
if ( ! $parsed_url ) |
214
|
|
|
return $args; |
215
|
|
|
|
216
|
|
|
$image_url_parts = wp_parse_args( $parsed_url, array( |
217
|
|
|
'host' => '', |
218
|
|
|
'query' => '' |
219
|
|
|
) ); |
220
|
|
|
|
221
|
|
|
if ( '.files.wordpress.com' != substr( $image_url_parts['host'], -20 ) ) |
222
|
|
|
return $args; |
223
|
|
|
|
224
|
|
|
if ( empty( $image_url_parts['query'] ) ) |
225
|
|
|
return $args; |
226
|
|
|
|
227
|
|
|
$wpcom_args = wp_parse_args( $image_url_parts['query'] ); |
228
|
|
|
|
229
|
|
|
if ( empty( $wpcom_args['w'] ) || empty( $wpcom_args['h'] ) ) |
230
|
|
|
return $args; |
231
|
|
|
|
232
|
|
|
// Keep the crop by using "resize" |
233
|
|
|
if ( ! empty( $wpcom_args['crop'] ) ) { |
234
|
|
View Code Duplication |
if ( is_array( $args ) ) { |
235
|
|
|
$args = array_merge( array( 'resize' => array( $wpcom_args['w'], $wpcom_args['h'] ) ), $args ); |
236
|
|
|
} else { |
237
|
|
|
$args = 'resize=' . rawurlencode( absint( $wpcom_args['w'] ) . ',' . absint( $wpcom_args['h'] ) ) . '&' . $args; |
238
|
|
|
} |
239
|
|
View Code Duplication |
} else { |
240
|
|
|
if ( is_array( $args ) ) { |
241
|
|
|
$args = array_merge( array( 'fit' => array( $wpcom_args['w'], $wpcom_args['h'] ) ), $args ); |
242
|
|
|
} else { |
243
|
|
|
$args = 'fit=' . rawurlencode( absint( $wpcom_args['w'] ) . ',' . absint( $wpcom_args['h'] ) ) . '&' . $args; |
244
|
|
|
} |
245
|
|
|
} |
246
|
|
|
|
247
|
|
|
return $args; |
248
|
|
|
} |
249
|
|
|
|
250
|
|
|
function jetpack_photon_url_scheme( $url, $scheme ) { |
251
|
|
|
if ( ! in_array( $scheme, array( 'http', 'https', 'network_path' ) ) ) { |
252
|
|
|
if ( preg_match( '#^(https?:)?//#', $url ) ) { |
253
|
|
|
return $url; |
254
|
|
|
} |
255
|
|
|
|
256
|
|
|
$scheme = 'http'; |
257
|
|
|
} |
258
|
|
|
|
259
|
|
|
if ( 'network_path' == $scheme ) { |
260
|
|
|
$scheme_slashes = '//'; |
261
|
|
|
} else { |
262
|
|
|
$scheme_slashes = "$scheme://"; |
263
|
|
|
} |
264
|
|
|
|
265
|
|
|
return preg_replace( '#^([a-z:]+)?//#i', $scheme_slashes, $url ); |
266
|
|
|
} |
267
|
|
|
|
268
|
|
|
/** |
269
|
|
|
* A wrapper for PHP's parse_url, prepending assumed scheme for network path |
270
|
|
|
* URLs. PHP versions 5.4.6 and earlier do not correctly parse without scheme. |
271
|
|
|
* |
272
|
|
|
* @see http://php.net/manual/en/function.parse-url.php#refsect1-function.parse-url-changelog |
273
|
|
|
* |
274
|
|
|
* @param string $url The URL to parse |
275
|
|
|
* @param integer $component Retrieve specific URL component |
276
|
|
|
* @return mixed Result of parse_url |
277
|
|
|
*/ |
278
|
|
|
function jetpack_photon_parse_url( $url, $component = -1 ) { |
279
|
|
|
if ( 0 === strpos( $url, '//' ) ) { |
280
|
|
|
$url = ( is_ssl() ? 'https:' : 'http:' ) . $url; |
281
|
|
|
} |
282
|
|
|
|
283
|
|
|
return parse_url( $url, $component ); |
284
|
|
|
} |
285
|
|
|
|
286
|
|
|
add_filter( 'jetpack_photon_skip_for_url', 'jetpack_photon_banned_domains', 9, 4 ); |
287
|
|
|
function jetpack_photon_banned_domains( $skip, $image_url, $args, $scheme ) { |
|
|
|
|
288
|
|
|
$banned_domains = array( |
289
|
|
|
'http://chart.googleapis.com/', |
290
|
|
|
'https://chart.googleapis.com/', |
291
|
|
|
'http://chart.apis.google.com/', |
292
|
|
|
'http://graph.facebook.com/', |
293
|
|
|
'https://graph.facebook.com/', |
294
|
|
|
); |
295
|
|
|
|
296
|
|
|
foreach ( $banned_domains as $banned_domain ) { |
297
|
|
|
if ( wp_startswith( $image_url, $banned_domain ) ) |
298
|
|
|
return true; |
299
|
|
|
} |
300
|
|
|
|
301
|
|
|
return $skip; |
302
|
|
|
} |
303
|
|
|
|
304
|
|
|
|
305
|
|
|
/** |
306
|
|
|
* Jetpack Photon - Support Text Widgets. |
307
|
|
|
* |
308
|
|
|
* @access public |
309
|
|
|
* @param string $content Content from text widget. |
310
|
|
|
* @return string |
311
|
|
|
*/ |
312
|
|
|
function jetpack_photon_support_text_widgets( $content ) { |
313
|
|
|
if ( class_exists( 'Jetpack_Photon' ) && Jetpack::is_module_active( 'photon' ) ) { |
314
|
|
|
return Jetpack_Photon::filter_the_content( $content ); |
315
|
|
|
} |
316
|
|
|
return $content; |
317
|
|
|
} |
318
|
|
|
add_filter( 'widget_text', 'jetpack_photon_support_text_widgets' ); |
319
|
|
|
|
This check looks from parameters that have been defined for a function or method, but which are not used in the method body.