These results are based on our legacy PHP analysis, consider migrating to our new PHP analysis engine instead. Learn more
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 | |||
251 | /** |
||
252 | |||
253 | */ |
||
254 | add_filter( 'jetpack_photon_add_query_string_to_domain', 'jetpack_photon_allow_facebook_graph_domain', 10, 2 ); |
||
255 | add_filter( 'jetpack_photon_any_extension_for_domain', 'jetpack_photon_allow_facebook_graph_domain', 10, 2 ); |
||
256 | |||
257 | function jetpack_photon_url_scheme( $url, $scheme ) { |
||
258 | if ( ! in_array( $scheme, array( 'http', 'https', 'network_path' ) ) ) { |
||
259 | if ( preg_match( '#^(https?:)?//#', $url ) ) { |
||
260 | return $url; |
||
261 | } |
||
262 | |||
263 | $scheme = 'http'; |
||
264 | } |
||
265 | |||
266 | if ( 'network_path' == $scheme ) { |
||
267 | $scheme_slashes = '//'; |
||
268 | } else { |
||
269 | $scheme_slashes = "$scheme://"; |
||
270 | } |
||
271 | |||
272 | return preg_replace( '#^([a-z:]+)?//#i', $scheme_slashes, $url ); |
||
273 | } |
||
274 | |||
275 | function jetpack_photon_allow_facebook_graph_domain( $allow = false, $domain ) { |
||
276 | switch ( $domain ) { |
||
277 | case 'graph.facebook.com' : |
||
278 | return true; |
||
279 | } |
||
280 | |||
281 | return $allow; |
||
282 | } |
||
283 | |||
284 | /** |
||
285 | * A wrapper for PHP's parse_url, prepending assumed scheme for network path |
||
286 | * URLs. PHP versions 5.4.6 and earlier do not correctly parse without scheme. |
||
287 | * |
||
288 | * @see http://php.net/manual/en/function.parse-url.php#refsect1-function.parse-url-changelog |
||
289 | * |
||
290 | * @param string $url The URL to parse |
||
291 | * @param integer $component Retrieve specific URL component |
||
292 | * @return mixed Result of parse_url |
||
293 | */ |
||
294 | function jetpack_photon_parse_url( $url, $component = -1 ) { |
||
295 | if ( 0 === strpos( $url, '//' ) ) { |
||
296 | $url = ( is_ssl() ? 'https:' : 'http:' ) . $url; |
||
297 | } |
||
298 | |||
299 | return parse_url( $url, $component ); |
||
300 | } |
||
301 | |||
302 | add_filter( 'jetpack_photon_skip_for_url', 'jetpack_photon_banned_domains', 9, 4 ); |
||
303 | function jetpack_photon_banned_domains( $skip, $image_url, $args, $scheme ) { |
||
0 ignored issues
–
show
|
|||
304 | $banned_domains = array( |
||
305 | 'http://chart.googleapis.com/', |
||
306 | 'https://chart.googleapis.com/', |
||
307 | 'http://chart.apis.google.com/', |
||
308 | ); |
||
309 | |||
310 | foreach ( $banned_domains as $banned_domain ) { |
||
311 | if ( wp_startswith( $image_url, $banned_domain ) ) |
||
312 | return true; |
||
313 | } |
||
314 | |||
315 | return $skip; |
||
316 | } |
||
317 | |||
318 | |||
319 | /** |
||
320 | * Jetpack Photon - Support Text Widgets. |
||
321 | * |
||
322 | * @access public |
||
323 | * @param string $content Content from text widget. |
||
324 | * @return string |
||
325 | */ |
||
326 | function jetpack_photon_support_text_widgets( $content ) { |
||
327 | if ( class_exists( 'Jetpack_Photon' ) && Jetpack::is_module_active( 'photon' ) ) { |
||
328 | return Jetpack_Photon::filter_the_content( $content ); |
||
329 | } |
||
330 | return $content; |
||
331 | } |
||
332 | add_filter( 'widget_text', 'jetpack_photon_support_text_widgets' ); |
||
333 |
This check looks from parameters that have been defined for a function or method, but which are not used in the method body.