Issues in ApiFormatXml.php (master) - Issues in master - wikimedia/mediawiki - Measure and Improve Code Quality continuously with Scrutinizer

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includes/api/ApiFormatXml.php (1 issue)

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Bug 1

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Minor 1

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<?php
/**
 *
 *
 * Created on Sep 19, 2006
 *
 * Copyright © 2006 Yuri Astrakhan "<Firstname><Lastname>@gmail.com"
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * http://www.gnu.org/copyleft/gpl.html
 *
 * @file
 */

/**
 * API XML output formatter
 * @ingroup API
 */
class ApiFormatXml extends ApiFormatBase {

	private $mRootElemName = 'api';
	public static $namespace = 'http://www.mediawiki.org/xml/api/';
	private $mIncludeNamespace = false;
	private $mXslt = null;

	public function getMimeType() {
		return 'text/xml';
	}

	public function setRootElement( $rootElemName ) {
		$this->mRootElemName = $rootElemName;
	}

	public function execute() {
		$params = $this->extractRequestParams();
		$this->mIncludeNamespace = $params['includexmlnamespace'];
		$this->mXslt = $params['xslt'];

		$this->printText( '<?xml version="1.0"?>' );
		if ( !is_null( $this->mXslt ) ) {
			$this->addXslt();
		}

		$result = $this->getResult();
		if ( $this->mIncludeNamespace && $result->getResultData( 'xmlns' ) === null ) {
			// If the result data already contains an 'xmlns' namespace added
			// for custom XML output types, it will override the one for the
			// generic API results.
			// This allows API output of other XML types like Atom, RSS, RSD.
			$result->addValue( null, 'xmlns', self::$namespace, ApiResult::NO_SIZE_CHECK );
		}
		$data = $result->getResultData( null, [
class A
{
    function getObject()
    {
        return null;
    }

}

$a = new A();
$object = $a->getObject();
			'Custom' => function ( &$data, &$metadata ) {
				if ( isset( $metadata[ApiResult::META_TYPE] ) ) {
					// We want to use non-BC for BCassoc to force outputting of _idx.
					switch ( $metadata[ApiResult::META_TYPE] ) {
						case 'BCassoc':
							$metadata[ApiResult::META_TYPE] = 'assoc';
							break;
					}
				}
			},
			'BC' => [ 'nobool', 'no*', 'nosub' ],
			'Types' => [ 'ArmorKVP' => '_name' ],
		] );

		$this->printText(
			static::recXmlPrint( $this->mRootElemName,
				$data,
				$this->getIsHtml() ? -2 : null
			)
		);
	}

	/**
	 * This method takes an array and converts it to XML.
	 *
	 * @param string|null $name Tag name
	 * @param mixed $value Tag value (attributes/content/subelements)
	 * @param int|null $indent Indentation
	 * @param array $attributes Additional attributes
	 * @return string
	 */
	public static function recXmlPrint( $name, $value, $indent, $attributes = [] ) {
		$retval = '';
		if ( $indent !== null ) {
			if ( $name !== null ) {
				$indent += 2;
			}
			$indstr = "\n" . str_repeat( ' ', $indent );
		} else {
			$indstr = '';
		}

		if ( is_object( $value ) ) {
			$value = (array)$value;
		}
		if ( is_array( $value ) ) {
			$contentKey = isset( $value[ApiResult::META_CONTENT] )
				? $value[ApiResult::META_CONTENT]
				: '*';
			$subelementKeys = isset( $value[ApiResult::META_SUBELEMENTS] )
				? $value[ApiResult::META_SUBELEMENTS]
				: [];
			if ( isset( $value[ApiResult::META_BC_SUBELEMENTS] ) ) {
				$subelementKeys = array_merge(
					$subelementKeys, $value[ApiResult::META_BC_SUBELEMENTS]
				);
			}
			$preserveKeys = isset( $value[ApiResult::META_PRESERVE_KEYS] )
				? $value[ApiResult::META_PRESERVE_KEYS]
				: [];
			$indexedTagName = isset( $value[ApiResult::META_INDEXED_TAG_NAME] )
				? self::mangleName( $value[ApiResult::META_INDEXED_TAG_NAME], $preserveKeys )
				: '_v';
			$bcBools = isset( $value[ApiResult::META_BC_BOOLS] )
				? $value[ApiResult::META_BC_BOOLS]
				: [];
			$indexSubelements = isset( $value[ApiResult::META_TYPE] )
				? $value[ApiResult::META_TYPE] !== 'array'
				: false;

			$content = null;
			$subelements = [];
			$indexedSubelements = [];
			foreach ( $value as $k => $v ) {
				if ( ApiResult::isMetadataKey( $k ) && !in_array( $k, $preserveKeys, true ) ) {
					continue;
				}

				$oldv = $v;
				if ( is_bool( $v ) && !in_array( $k, $bcBools, true ) ) {
					$v = $v ? 'true' : 'false';
				}

				if ( $name !== null && $k === $contentKey ) {
					$content = $v;
				} elseif ( is_int( $k ) ) {
					$indexedSubelements[$k] = $v;
				} elseif ( is_array( $v ) || is_object( $v ) ) {
					$subelements[self::mangleName( $k, $preserveKeys )] = $v;
				} elseif ( in_array( $k, $subelementKeys, true ) || $name === null ) {
					$subelements[self::mangleName( $k, $preserveKeys )] = [
						'content' => $v,
						ApiResult::META_CONTENT => 'content',
						ApiResult::META_TYPE => 'assoc',
					];
				} elseif ( is_bool( $oldv ) ) {
					if ( $oldv ) {
						$attributes[self::mangleName( $k, $preserveKeys )] = '';
					}
				} elseif ( $v !== null ) {
					$attributes[self::mangleName( $k, $preserveKeys )] = $v;
				}
			}

			if ( $content !== null ) {
				if ( $subelements || $indexedSubelements ) {
					$subelements[self::mangleName( $contentKey, $preserveKeys )] = [
						'content' => $content,
						ApiResult::META_CONTENT => 'content',
						ApiResult::META_TYPE => 'assoc',
					];
					$content = null;
				} elseif ( is_scalar( $content ) ) {
					// Add xml:space="preserve" to the element so XML parsers
					// will leave whitespace in the content alone
					$attributes += [ 'xml:space' => 'preserve' ];
				}
			}

			if ( $content !== null ) {
				if ( is_scalar( $content ) ) {
					$retval .= $indstr . Xml::element( $name, $attributes, $content );
				} else {
					if ( $name !== null ) {
						$retval .= $indstr . Xml::element( $name, $attributes, null );
					}
					$retval .= static::recXmlPrint( null, $content, $indent );
					if ( $name !== null ) {
						$retval .= $indstr . Xml::closeElement( $name );
					}
				}
			} elseif ( !$indexedSubelements && !$subelements ) {
				if ( $name !== null ) {
					$retval .= $indstr . Xml::element( $name, $attributes );
				}
			} else {
				if ( $name !== null ) {
					$retval .= $indstr . Xml::element( $name, $attributes, null );
				}
				foreach ( $subelements as $k => $v ) {
					$retval .= static::recXmlPrint( $k, $v, $indent );
				}
				foreach ( $indexedSubelements as $k => $v ) {
					$retval .= static::recXmlPrint( $indexedTagName, $v, $indent,
						$indexSubelements ? [ '_idx' => $k ] : []
					);
				}
				if ( $name !== null ) {
					$retval .= $indstr . Xml::closeElement( $name );
				}
			}
		} else {
			// to make sure null value doesn't produce unclosed element,
			// which is what Xml::element( $name, null, null ) returns
			if ( $value === null ) {
				$retval .= $indstr . Xml::element( $name, $attributes );
			} else {
				$retval .= $indstr . Xml::element( $name, $attributes, $value );
			}
		}

		return $retval;
	}

	/**
	 * Mangle XML-invalid names to be valid in XML
	 * @param string $name
	 * @param array $preserveKeys Names to not mangle
	 * @return string Mangled name
	 */
	private static function mangleName( $name, $preserveKeys = [] ) {
		static $nsc = null, $nc = null;

		if ( in_array( $name, $preserveKeys, true ) ) {
			return $name;
		}

		if ( $name === '' ) {
			return '_';
		}

		if ( $nsc === null ) {
			// Note we omit ':' from $nsc and $nc because it's reserved for XML
			// namespacing, and we omit '_' from $nsc (but not $nc) because we
			// reserve it.
			$nsc = 'A-Za-z\x{C0}-\x{D6}\x{D8}-\x{F6}\x{F8}-\x{2FF}\x{370}-\x{37D}\x{37F}-\x{1FFF}' .
				'\x{200C}-\x{200D}\x{2070}-\x{218F}\x{2C00}-\x{2FEF}\x{3001}-\x{D7FF}' .
				'\x{F900}-\x{FDCF}\x{FDF0}-\x{FFFD}\x{10000}-\x{EFFFF}';
			$nc = $nsc . '_\-.0-9\x{B7}\x{300}-\x{36F}\x{203F}-\x{2040}';
		}

		if ( preg_match( "/^[$nsc][$nc]*$/uS", $name ) ) {
			return $name;
		}

		return '_' . preg_replace_callback(
			"/[^$nc]/uS",
			function ( $m ) {
				return sprintf( '.%X.', UtfNormal\Utils::utf8ToCodepoint( $m[0] ) );
			},
			str_replace( '.', '.2E.', $name )
		);
	}

	protected function addXslt() {
		$nt = Title::newFromText( $this->mXslt );
		if ( is_null( $nt ) || !$nt->exists() ) {
			$this->setWarning( 'Invalid or non-existent stylesheet specified' );

			return;
		}
		if ( $nt->getNamespace() != NS_MEDIAWIKI ) {
			$this->setWarning( 'Stylesheet should be in the MediaWiki namespace.' );

			return;
		}
		if ( substr( $nt->getText(), -4 ) !== '.xsl' ) {
			$this->setWarning( 'Stylesheet should have .xsl extension.' );

			return;
		}
		$this->printText( '<?xml-stylesheet href="' .
			htmlspecialchars( $nt->getLocalURL( 'action=raw' ) ) . '" type="text/xsl" ?>' );
	}

	public function getAllowedParams() {
		return parent::getAllowedParams() + [
			'xslt' => [
				ApiBase::PARAM_HELP_MSG => 'apihelp-xml-param-xslt',
			],
			'includexmlnamespace' => [
				ApiBase::PARAM_DFLT => false,
				ApiBase::PARAM_HELP_MSG => 'apihelp-xml-param-includexmlnamespace',
			],
		];
	}
}


1			<?php
2			/**
3			*
4			*
5			* Created on Sep 19, 2006
6			*
7			* Copyright © 2006 Yuri Astrakhan "<Firstname><Lastname>@gmail.com"
8			*
9			* This program is free software; you can redistribute it and/or modify
10			* it under the terms of the GNU General Public License as published by
11			* the Free Software Foundation; either version 2 of the License, or
12			* (at your option) any later version.
13			*
14			* This program is distributed in the hope that it will be useful,
15			* but WITHOUT ANY WARRANTY; without even the implied warranty of
16			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17			* GNU General Public License for more details.
18			*
19			* You should have received a copy of the GNU General Public License along
20			* with this program; if not, write to the Free Software Foundation, Inc.,
21			* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
22			* http://www.gnu.org/copyleft/gpl.html
23			*
24			* @file
25			*/
26
27			/**
28			* API XML output formatter
29			* @ingroup API
30			*/
31			class ApiFormatXml extends ApiFormatBase {
32
33			private $mRootElemName = 'api';
34			public static $namespace = 'http://www.mediawiki.org/xml/api/';
35			private $mIncludeNamespace = false;
36			private $mXslt = null;
37
38			public function getMimeType() {
39			return 'text/xml';
40			}
41
42			public function setRootElement( $rootElemName ) {
43			$this->mRootElemName = $rootElemName;
44			}
45
46			public function execute() {
47			$params = $this->extractRequestParams();
48			$this->mIncludeNamespace = $params['includexmlnamespace'];
49			$this->mXslt = $params['xslt'];
50
51			$this->printText( '<?xml version="1.0"?>' );
52			if ( !is_null( $this->mXslt ) ) {
53			$this->addXslt();
54			}
55
56			$result = $this->getResult();
57			if ( $this->mIncludeNamespace && $result->getResultData( 'xmlns' ) === null ) {
58			// If the result data already contains an 'xmlns' namespace added
59			// for custom XML output types, it will override the one for the
60			// generic API results.
61			// This allows API output of other XML types like Atom, RSS, RSD.
62			$result->addValue( null, 'xmlns', self::$namespace, ApiResult::NO_SIZE_CHECK );
63			}
64			$data = $result->getResultData( null, [
			0 ignored issues – show Bug introduced 2016-01-16 18:00 UTC by Report Bug Copy Issue Report Show Similar Issues like this Are you sure the assignment to `$data` is correct as `$result->getResultData(n...ArmorKVP' => '_name')))` (which targets `ApiResult::getResultData()`) seems to always return null. This check looks for function or method calls that always return null and whose return value is assigned to a variable. class A { function getObject() { return null; } } $a = new A(); $object = $a->getObject(); The method `getObject()` can return nothing but null, so it makes no sense to assign that value to a variable. The reason is most likely that a function or method is imcomplete or has been reduced for debug purposes. Loading history...
65			'Custom' => function ( &$data, &$metadata ) {
66			if ( isset( $metadata[ApiResult::META_TYPE] ) ) {
67			// We want to use non-BC for BCassoc to force outputting of _idx.
68			switch ( $metadata[ApiResult::META_TYPE] ) {
69			case 'BCassoc':
70			$metadata[ApiResult::META_TYPE] = 'assoc';
71			break;
72			}
73			}
74			},
75			'BC' => [ 'nobool', 'no*', 'nosub' ],
76			'Types' => [ 'ArmorKVP' => '_name' ],
77			] );
78
79			$this->printText(
80			static::recXmlPrint( $this->mRootElemName,
81			$data,
82			$this->getIsHtml() ? -2 : null
83			)
84			);
85			}
86
87			/**
88			* This method takes an array and converts it to XML.
89			*
90			* @param string\|null $name Tag name
91			* @param mixed $value Tag value (attributes/content/subelements)
92			* @param int\|null $indent Indentation
93			* @param array $attributes Additional attributes
94			* @return string
95			*/
96			public static function recXmlPrint( $name, $value, $indent, $attributes = [] ) {
97			$retval = '';
98			if ( $indent !== null ) {
99			if ( $name !== null ) {
100			$indent += 2;
101			}
102			$indstr = "\n" . str_repeat( ' ', $indent );
103			} else {
104			$indstr = '';
105			}
106
107			if ( is_object( $value ) ) {
108			$value = (array)$value;
109			}
110			if ( is_array( $value ) ) {
111			$contentKey = isset( $value[ApiResult::META_CONTENT] )
112			? $value[ApiResult::META_CONTENT]
113			: '*';
114			$subelementKeys = isset( $value[ApiResult::META_SUBELEMENTS] )
115			? $value[ApiResult::META_SUBELEMENTS]
116			: [];
117			if ( isset( $value[ApiResult::META_BC_SUBELEMENTS] ) ) {
118			$subelementKeys = array_merge(
119			$subelementKeys, $value[ApiResult::META_BC_SUBELEMENTS]
120			);
121			}
122			$preserveKeys = isset( $value[ApiResult::META_PRESERVE_KEYS] )
123			? $value[ApiResult::META_PRESERVE_KEYS]
124			: [];
125			$indexedTagName = isset( $value[ApiResult::META_INDEXED_TAG_NAME] )
126			? self::mangleName( $value[ApiResult::META_INDEXED_TAG_NAME], $preserveKeys )
127			: '_v';
128			$bcBools = isset( $value[ApiResult::META_BC_BOOLS] )
129			? $value[ApiResult::META_BC_BOOLS]
130			: [];
131			$indexSubelements = isset( $value[ApiResult::META_TYPE] )
132			? $value[ApiResult::META_TYPE] !== 'array'
133			: false;
134
135			$content = null;
136			$subelements = [];
137			$indexedSubelements = [];
138			foreach ( $value as $k => $v ) {
139			if ( ApiResult::isMetadataKey( $k ) && !in_array( $k, $preserveKeys, true ) ) {
140			continue;
141			}
142
143			$oldv = $v;
144			if ( is_bool( $v ) && !in_array( $k, $bcBools, true ) ) {
145			$v = $v ? 'true' : 'false';
146			}
147
148			if ( $name !== null && $k === $contentKey ) {
149			$content = $v;
150			} elseif ( is_int( $k ) ) {
151			$indexedSubelements[$k] = $v;
152			} elseif ( is_array( $v ) \|\| is_object( $v ) ) {
153			$subelements[self::mangleName( $k, $preserveKeys )] = $v;
154			} elseif ( in_array( $k, $subelementKeys, true ) \|\| $name === null ) {
155			$subelements[self::mangleName( $k, $preserveKeys )] = [
156			'content' => $v,
157			ApiResult::META_CONTENT => 'content',
158			ApiResult::META_TYPE => 'assoc',
159			];
160			} elseif ( is_bool( $oldv ) ) {
161			if ( $oldv ) {
162			$attributes[self::mangleName( $k, $preserveKeys )] = '';
163			}
164			} elseif ( $v !== null ) {
165			$attributes[self::mangleName( $k, $preserveKeys )] = $v;
166			}
167			}
168
169			if ( $content !== null ) {
170			if ( $subelements \|\| $indexedSubelements ) {
171			$subelements[self::mangleName( $contentKey, $preserveKeys )] = [
172			'content' => $content,
173			ApiResult::META_CONTENT => 'content',
174			ApiResult::META_TYPE => 'assoc',
175			];
176			$content = null;
177			} elseif ( is_scalar( $content ) ) {
178			// Add xml:space="preserve" to the element so XML parsers
179			// will leave whitespace in the content alone
180			$attributes += [ 'xml:space' => 'preserve' ];
181			}
182			}
183
184			if ( $content !== null ) {
185			if ( is_scalar( $content ) ) {
186			$retval .= $indstr . Xml::element( $name, $attributes, $content );
187			} else {
188			if ( $name !== null ) {
189			$retval .= $indstr . Xml::element( $name, $attributes, null );
190			}
191			$retval .= static::recXmlPrint( null, $content, $indent );
192			if ( $name !== null ) {
193			$retval .= $indstr . Xml::closeElement( $name );
194			}
195			}
196			} elseif ( !$indexedSubelements && !$subelements ) {
197			if ( $name !== null ) {
198			$retval .= $indstr . Xml::element( $name, $attributes );
199			}
200			} else {
201			if ( $name !== null ) {
202			$retval .= $indstr . Xml::element( $name, $attributes, null );
203			}
204			foreach ( $subelements as $k => $v ) {
205			$retval .= static::recXmlPrint( $k, $v, $indent );
206			}
207			foreach ( $indexedSubelements as $k => $v ) {
208			$retval .= static::recXmlPrint( $indexedTagName, $v, $indent,
209			$indexSubelements ? [ '_idx' => $k ] : []
210			);
211			}
212			if ( $name !== null ) {
213			$retval .= $indstr . Xml::closeElement( $name );
214			}
215			}
216			} else {
217			// to make sure null value doesn't produce unclosed element,
218			// which is what Xml::element( $name, null, null ) returns
219			if ( $value === null ) {
220			$retval .= $indstr . Xml::element( $name, $attributes );
221			} else {
222			$retval .= $indstr . Xml::element( $name, $attributes, $value );
223			}
224			}
225
226			return $retval;
227			}
228
229			/**
230			* Mangle XML-invalid names to be valid in XML
231			* @param string $name
232			* @param array $preserveKeys Names to not mangle
233			* @return string Mangled name
234			*/
235			private static function mangleName( $name, $preserveKeys = [] ) {
236			static $nsc = null, $nc = null;
237
238			if ( in_array( $name, $preserveKeys, true ) ) {
239			return $name;
240			}
241
242			if ( $name === '' ) {
243			return '_';
244			}
245
246			if ( $nsc === null ) {
247			// Note we omit ':' from $nsc and $nc because it's reserved for XML
248			// namespacing, and we omit '_' from $nsc (but not $nc) because we
249			// reserve it.
250			$nsc = 'A-Za-z\x{C0}-\x{D6}\x{D8}-\x{F6}\x{F8}-\x{2FF}\x{370}-\x{37D}\x{37F}-\x{1FFF}' .
251			'\x{200C}-\x{200D}\x{2070}-\x{218F}\x{2C00}-\x{2FEF}\x{3001}-\x{D7FF}' .
252			'\x{F900}-\x{FDCF}\x{FDF0}-\x{FFFD}\x{10000}-\x{EFFFF}';
253			$nc = $nsc . '_\-.0-9\x{B7}\x{300}-\x{36F}\x{203F}-\x{2040}';
254			}
255
256			if ( preg_match( "/^[$nsc][$nc]*$/uS", $name ) ) {
257			return $name;
258			}
259
260			return '_' . preg_replace_callback(
261			"/[^$nc]/uS",
262			function ( $m ) {
263			return sprintf( '.%X.', UtfNormal\Utils::utf8ToCodepoint( $m[0] ) );
264			},
265			str_replace( '.', '.2E.', $name )
266			);
267			}
268
269			protected function addXslt() {
270			$nt = Title::newFromText( $this->mXslt );
271			if ( is_null( $nt ) \|\| !$nt->exists() ) {
272			$this->setWarning( 'Invalid or non-existent stylesheet specified' );
273
274			return;
275			}
276			if ( $nt->getNamespace() != NS_MEDIAWIKI ) {
277			$this->setWarning( 'Stylesheet should be in the MediaWiki namespace.' );
278
279			return;
280			}
281			if ( substr( $nt->getText(), -4 ) !== '.xsl' ) {
282			$this->setWarning( 'Stylesheet should have .xsl extension.' );
283
284			return;
285			}
286			$this->printText( '<?xml-stylesheet href="' .
287			htmlspecialchars( $nt->getLocalURL( 'action=raw' ) ) . '" type="text/xsl" ?>' );
288			}
289
290			public function getAllowedParams() {
291			return parent::getAllowedParams() + [
292			'xslt' => [
293			ApiBase::PARAM_HELP_MSG => 'apihelp-xml-param-xslt',
294			],
295			'includexmlnamespace' => [
296			ApiBase::PARAM_DFLT => false,
297			ApiBase::PARAM_HELP_MSG => 'apihelp-xml-param-includexmlnamespace',
298			],
299			];
300			}
301			}
302

wikimedia / mediawiki

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includes/api/ApiFormatXml.php (1 issue)

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