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created 2017-05-23 00:16 UTC

functions.photon.php (2 issues)

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<?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 );

	if ( class_exists( 'Jetpack') ) {
		/**
		 * Disables Photon URL processing for local development
	 	 *
	 	 * @module photon
	 	 *
	 	 * @since 4.1.0
	 	 *
	 	 * @param bool false Result of Jetpack::is_development_mode.
	 	 */
		if ( true === apply_filters( 'jetpack_photon_development_mode', Jetpack::is_development_mode() ) ) {
			return $image_url;
		}
	}

	/**
	 * Allow specific image URls to avoid going through Photon.
	 *
	 * @module photon
	 *
	 * @since 3.2.0
	 *
	 * @param bool false Should the image be returned as is, without going through Photon. Default to false.
	 * @param string $image_url Image URL.
	 * @param array|string $args Array of Photon arguments.
	 * @param string|null $scheme Image scheme. Default to null.
	 */
	if ( false !== apply_filters( 'jetpack_photon_skip_for_url', false, $image_url, $args, $scheme ) ) {
		return $image_url;
	}

	/**
	 * Filter the original image URL before it goes through Photon.
	 *
	 * @module photon
	 *
	 * @since 1.9.0
	 *
	 * @param string $image_url Image URL.
	 * @param array|string $args Array of Photon arguments.
	 * @param string|null $scheme Image scheme. Default to null.
	 */
	$image_url = apply_filters( 'jetpack_photon_pre_image_url', $image_url, $args, $scheme );
	/**
	 * Filter the original Photon image parameters before Photon is applied to an image.
	 *
	 * @module photon
	 *
	 * @since 1.9.0
	 *
	 * @param array|string $args Array of Photon arguments.
	 * @param string $image_url Image URL.
	 * @param string|null $scheme Image scheme. Default to null.
	 */
	$args = apply_filters( 'jetpack_photon_pre_args', $args, $image_url, $scheme );

	if ( empty( $image_url ) )
		return $image_url;

	$image_url_parts = @jetpack_photon_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 );
	}

	/* Don't photon-ize WPCOM hosted images with only the following url args:
	 *  `w`, `h`, `fit`, `crop`, `zoom`, `strip`, `resize`, `quality`
	 * These args can just be added to the wpcom-version of the image, and save on latency.
	 */
	$is_wpcom_image_with_safe_args = false;
	$allowed_wpcom_keys = array(
		'w'       => true,
		'h'       => true,
		'fit'     => true,
		'crop'    => true,
		'zoom'    => true,
		'strip'   => true,
		'resize'  => true,
		'quality' => true,
	);
	if ( wp_endswith( strtolower( $image_url_parts['host'] ), '.files.wordpress.com' ) && ! array_diff_key( $args, $allowed_wpcom_keys ) ) {
		$is_wpcom_image_with_safe_args = true;
	}

	/** This filter is documented below. */
	$custom_photon_url = apply_filters( 'jetpack_photon_domain', '', $image_url );
	$custom_photon_url = esc_url( $custom_photon_url );

	// 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.
	// Alternately, if it's a *.files.wordpress.com url, and the arguments are supported, keep the domain.
	if (
		in_array( $image_url_parts['host'], array( 'i0.wp.com', 'i1.wp.com', 'i2.wp.com' ) )
		|| $image_url_parts['host'] === jetpack_photon_parse_url( $custom_photon_url, PHP_URL_HOST )
		|| $is_wpcom_image_with_safe_args
	) {
		$photon_url = add_query_arg( $args, $image_url );
		return jetpack_photon_url_scheme( $photon_url, $scheme );
	}

	/**
	 * Allow Photon to use query strings as well.
	 * By default, Photon doesn't support query strings so we ignore them and look only at the path.
	 * This setting is Photon Server dependent.
	 *
	 * @module photon
	 *
	 * @since 1.9.0
	 *
	 * @param bool false Should images using query strings go through Photon. Default is false.
	 * @param string $image_url_parts['host'] Image URL's host.
	 */
	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', 'ashx' ) ) )
			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();

	/**
	 * Filters the domain used by the Photon module.
	 *
	 * @module photon
	 *
	 * @since 3.4.2
	 *
	 * @param string https://i{$subdomain}.wp.com Domain used by Photon. $subdomain is a random number between 0 and 2.
	 * @param string $image_url URL of the image to be photonized.
	 */
	$photon_domain = apply_filters( 'jetpack_photon_domain', "https://i{$subdomain}.wp.com", $image_url );
	$photon_domain = trailingslashit( esc_url( $photon_domain ) );
	$photon_url  = $photon_domain . $image_host_path;

	/**
	 * Add query strings to Photon URL.
	 * By default, Photon doesn't support query strings so we ignore them.
	 * This setting is Photon Server dependent.
	 *
	 * @module photon
	 *
	 * @since 1.9.0
	 *
	 * @param bool false Should query strings be added to the image URL. Default is false.
	 * @param string $image_url_parts['host'] Image URL's host.
	 */
	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;
		}
	}

	if ( isset( $image_url_parts['scheme'] ) && 'https' == $image_url_parts['scheme'] ) {
		$photon_url = add_query_arg( array( 'ssl' => 1 ), $photon_url );
	}

	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;
}

function jetpack_photon_url_scheme( $url, $scheme ) {
	if ( ! in_array( $scheme, array( 'http', 'https', 'network_path' ) ) ) {
		if ( preg_match( '#^(https?:)?//#', $url ) ) {
			return $url;
		}

		$scheme = 'http';
	}

	if ( 'network_path' == $scheme ) {
		$scheme_slashes = '//';
	} else {
		$scheme_slashes = "$scheme://";
	}

	return preg_replace( '#^([a-z:]+)?//#i', $scheme_slashes, $url );
}

/**
 * A wrapper for PHP's parse_url, prepending assumed scheme for network path
 * URLs. PHP versions 5.4.6 and earlier do not correctly parse without scheme.
 *
 * @see http://php.net/manual/en/function.parse-url.php#refsect1-function.parse-url-changelog
 *
 * @param string $url The URL to parse
 * @param integer $component Retrieve specific URL component
 * @return mixed Result of parse_url
 */
function jetpack_photon_parse_url( $url, $component = -1 ) {
	if ( 0 === strpos( $url, '//' ) ) {
		$url = ( is_ssl() ? 'https:' : 'http:' ) . $url;
	}

	return parse_url( $url, $component );
}

add_filter( 'jetpack_photon_skip_for_url', 'jetpack_photon_banned_domains', 9, 4 );
function jetpack_photon_banned_domains( $skip, $image_url, $args, $scheme ) {

	$banned_domains = array(
		'http://chart.googleapis.com/',
		'https://chart.googleapis.com/',
		'http://chart.apis.google.com/',
		'http://graph.facebook.com/',
		'https://graph.facebook.com/',
	);

	foreach ( $banned_domains as $banned_domain ) {
		if ( wp_startswith( $image_url, $banned_domain ) )
			return true;
	}

	return $skip;
}


/**
 * Jetpack Photon - Support Text Widgets.
 *
 * @access public
 * @param string $content Content from text widget.
 * @return string
 */
function jetpack_photon_support_text_widgets( $content ) {
	if ( class_exists( 'Jetpack_Photon' ) && Jetpack::is_module_active( 'photon' ) ) {
		return Jetpack_Photon::filter_the_content( $content );
	}
	return $content;
}
add_filter( 'widget_text', 'jetpack_photon_support_text_widgets' );


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, $scheme ) {
		0 ignored issues – show Unused Code introduced 2015-11-20 23:03 UTC by Report Bug Copy Issue Report Show Similar Issues like this The parameter `$args` is not used and could be removed. This check looks from parameters that have been defined for a function or method, but which are not used in the method body. Loading history... Unused Code introduced 2015-11-20 23:03 UTC by Report Bug Copy Issue Report Show Similar Issues like this The parameter `$scheme` is not used and could be removed. This check looks from parameters that have been defined for a function or method, but which are not used in the method body. Loading history...
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

Automattic / jetpack

Push — fix/comments-photon ( a2496c...6aeef6 )

functions.photon.php (2 issues)

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