15253296250

Committed 26 May 2025 11:55AM UTC coverage: 78.632% (+0.3%) from 78.375%

Build # 15253296250

Build Type

Pull #1105

github

Committed by

web-flow

Commit Message

Merge d9441d98f into caf806050

Pull Request Pull Request #1105: Skip tests when 'git' command is not available

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78.89

/src/Standards/Generic/Sniffs/PHP/ForbiddenFunctionsSniff.php

<?php
/**
 * Discourages the use of alias functions.
 *
 * Alias functions are kept in PHP for compatibility
 * with older versions. Can be used to forbid the use of any function.
 *
 * @author    Greg Sherwood <gsherwood@squiz.net>
 * @copyright 2006-2015 Squiz Pty Ltd (ABN 77 084 670 600)
 * @license   https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/master/licence.txt BSD Licence
 */

namespace PHP_CodeSniffer\Standards\Generic\Sniffs\PHP;

use PHP_CodeSniffer\Files\File;
use PHP_CodeSniffer\Sniffs\Sniff;
use PHP_CodeSniffer\Util\Tokens;

class ForbiddenFunctionsSniff implements Sniff
{

    /**
     * A list of forbidden functions with their alternatives.
     *
     * The value is NULL if no alternative exists. IE, the
     * function should just not be used.
     *
     * @var array<string, string|null>
     */
    public $forbiddenFunctions = [
        'sizeof' => 'count',
        'delete' => 'unset',
    ];

    /**
     * A cache of forbidden function names, for faster lookups.
     *
     * @var string[]
     */
    protected $forbiddenFunctionNames = [];

    /**
     * If true, forbidden functions will be considered regular expressions.
     *
     * @var boolean
     */
    protected $patternMatch = false;

    /**
     * If true, an error will be thrown; otherwise a warning.
     *
     * @var boolean
     */
    public $error = true;


    /**
     * Returns an array of tokens this test wants to listen for.
     *
     * @return array<int|string>
     */
    public function register()
    {
        // Everyone has had a chance to figure out what forbidden functions
        // they want to check for, so now we can cache out the list.
        $this->forbiddenFunctionNames = array_keys($this->forbiddenFunctions);

        if ($this->patternMatch === true) {
            foreach ($this->forbiddenFunctionNames as $i => $name) {
                $this->forbiddenFunctionNames[$i] = '/'.$name.'/i';
            }

            return [
                T_STRING,
                T_NAME_FULLY_QUALIFIED,
            ];
        }

        // If we are not pattern matching, we need to work out what
        // tokens to listen for.
        $hasHaltCompiler = false;
        $string          = '<?php ';
        foreach ($this->forbiddenFunctionNames as $name) {
            if ($name === '__halt_compiler') {
                $hasHaltCompiler = true;
            } else {
                $string .= $name.'();';
            }
        }

        if ($hasHaltCompiler === true) {
            $string .= '__halt_compiler();';
        }

        $register = [];

        $tokens = token_get_all($string);
        array_shift($tokens);
        foreach ($tokens as $token) {
            if (is_array($token) === true) {
                $register[] = $token[0];
            }
        }

        $this->forbiddenFunctionNames = array_map('strtolower', $this->forbiddenFunctionNames);
        $this->forbiddenFunctions     = array_combine($this->forbiddenFunctionNames, $this->forbiddenFunctions);

        $targets   = array_unique($register);
        $targets[] = T_NAME_FULLY_QUALIFIED;

        return $targets;

    }//end register()


    /**
     * Processes this test, when one of its tokens is encountered.
     *
     * @param \PHP_CodeSniffer\Files\File $phpcsFile The file being scanned.
     * @param int                         $stackPtr  The position of the current token in
     *                                               the stack passed in $tokens.
     *
     * @return void
     */
    public function process(File $phpcsFile, $stackPtr)
    {
        $tokens = $phpcsFile->getTokens();

        $ignore = [
            T_DOUBLE_COLON             => true,
            T_OBJECT_OPERATOR          => true,
            T_NULLSAFE_OBJECT_OPERATOR => true,
            T_FUNCTION                 => true,
            T_CONST                    => true,
            T_PUBLIC                   => true,
            T_PRIVATE                  => true,
            T_PROTECTED                => true,
            T_AS                       => true,
            T_NEW                      => true,
            T_INSTEADOF                => true,
            T_IMPLEMENTS               => true,
        ];

        $prevToken = $phpcsFile->findPrevious(Tokens::EMPTY_TOKENS, ($stackPtr - 1), null, true);

        if (isset($ignore[$tokens[$prevToken]['code']]) === true) {
            // Not a call to a PHP function.
            return;
        }

        $nextToken = $phpcsFile->findNext(Tokens::EMPTY_TOKENS, ($stackPtr + 1), null, true);
        if (isset($ignore[$tokens[$nextToken]['code']]) === true) {
            // Not a call to a PHP function.
            return;
        }

        if (($tokens[$stackPtr]['code'] === T_STRING || $tokens[$stackPtr]['code'] === T_NAME_FULLY_QUALIFIED)
            && $tokens[$nextToken]['code'] !== T_OPEN_PARENTHESIS
        ) {
            // Not a call to a PHP function.
            return;
        }

        if (empty($tokens[$stackPtr]['nested_attributes']) === false) {
            // Class instantiation in attribute, not function call.
            return;
        }

        $function = strtolower($tokens[$stackPtr]['content']);
        if ($tokens[$stackPtr]['code'] === T_NAME_FULLY_QUALIFIED) {
            $function = ltrim($function, '\\');
        }

        $pattern = null;
        if ($this->patternMatch === true) {
            $count   = 0;
            $pattern = preg_replace(
                $this->forbiddenFunctionNames,
                $this->forbiddenFunctionNames,
                $function,
                1,
                $count
            );

            if ($count === 0) {
                return;
            }

            // Remove the pattern delimiters and modifier.
            $pattern = substr($pattern, 1, -2);
        } else {
            if (in_array($function, $this->forbiddenFunctionNames, true) === false) {
                return;
            }
        }//end if

        $this->addError($phpcsFile, $stackPtr, $function, $pattern);

    }//end process()


    /**
     * Generates the error or warning for this sniff.
     *
     * @param \PHP_CodeSniffer\Files\File $phpcsFile The file being scanned.
     * @param int                         $stackPtr  The position of the forbidden function
     *                                               in the token array.
     * @param string                      $function  The name of the forbidden function.
     * @param string                      $pattern   The pattern used for the match.
     *
     * @return void
     */
    protected function addError($phpcsFile, $stackPtr, $function, $pattern=null)
    {
        $data  = [$function];
        $error = 'The use of function %s() is ';
        if ($this->error === true) {
            $type   = 'Found';
            $error .= 'forbidden';
        } else {
            $type   = 'Discouraged';
            $error .= 'discouraged';
        }

        if ($pattern === null) {
            $pattern = strtolower($function);
        }

        if ($this->forbiddenFunctions[$pattern] !== null) {
            $type  .= 'WithAlternative';
            $data[] = $this->forbiddenFunctions[$pattern];
            $error .= '; use %s() instead';
        }

        if ($this->error === true) {
            $phpcsFile->addError($error, $stackPtr, $type, $data);
        } else {
            $phpcsFile->addWarning($error, $stackPtr, $type, $data);
        }

    }//end addError()


}//end class

1	<?php
2	/**
3	* Discourages the use of alias functions.
4	*
5	* Alias functions are kept in PHP for compatibility
6	* with older versions. Can be used to forbid the use of any function.
7	*
8	* @author Greg Sherwood <gsherwood@squiz.net>
9	* @copyright 2006-2015 Squiz Pty Ltd (ABN 77 084 670 600)
10	* @license https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/master/licence.txt BSD Licence
11	*/
12
13	namespace PHP_CodeSniffer\Standards\Generic\Sniffs\PHP;
14
15	use PHP_CodeSniffer\Files\File;
16	use PHP_CodeSniffer\Sniffs\Sniff;
17	use PHP_CodeSniffer\Util\Tokens;
18
19	class ForbiddenFunctionsSniff implements Sniff
20	{
21
22	/**
23	* A list of forbidden functions with their alternatives.
24	*
25	* The value is NULL if no alternative exists. IE, the
26	* function should just not be used.
27	*
28	* @var array<string, string\|null>
29	*/
30	public $forbiddenFunctions = [
31	'sizeof' => 'count',
32	'delete' => 'unset',
33	];
34
35	/**
36	* A cache of forbidden function names, for faster lookups.
37	*
38	* @var string[]
39	*/
40	protected $forbiddenFunctionNames = [];
41
42	/**
43	* If true, forbidden functions will be considered regular expressions.
44	*
45	* @var boolean
46	*/
47	protected $patternMatch = false;
48
49	/**
50	* If true, an error will be thrown; otherwise a warning.
51	*
52	* @var boolean
53	*/
54	public $error = true;
55
56
57	/**
58	* Returns an array of tokens this test wants to listen for.
59	*
60	* @return array<int\|string>
61	*/
62	public function register()	3✔
63	{
64	// Everyone has had a chance to figure out what forbidden functions
65	// they want to check for, so now we can cache out the list.
66	$this->forbiddenFunctionNames = array_keys($this->forbiddenFunctions);	3✔
67
68	if ($this->patternMatch === true) {	3✔
69	foreach ($this->forbiddenFunctionNames as $i => $name) {	×
70	$this->forbiddenFunctionNames[$i] = '/'.$name.'/i';	×
71	}
72
73	return [
74	T_STRING,	×
75	T_NAME_FULLY_QUALIFIED,	×
76	];
77	}
78
79	// If we are not pattern matching, we need to work out what
80	// tokens to listen for.
81	$hasHaltCompiler = false;	3✔
82	$string = '<?php ';	3✔
83	foreach ($this->forbiddenFunctionNames as $name) {	3✔
84	if ($name === '__halt_compiler') {	3✔
85	$hasHaltCompiler = true;	×
86	} else {
87	$string .= $name.'();';	3✔
88	}
89	}
90
91	if ($hasHaltCompiler === true) {	3✔
92	$string .= '__halt_compiler();';	×
93	}
94
95	$register = [];	3✔
96
97	$tokens = token_get_all($string);	3✔
98	array_shift($tokens);	3✔
99	foreach ($tokens as $token) {	3✔
100	if (is_array($token) === true) {	3✔
101	$register[] = $token[0];	3✔
102	}
103	}
104
105	$this->forbiddenFunctionNames = array_map('strtolower', $this->forbiddenFunctionNames);	3✔
106	$this->forbiddenFunctions = array_combine($this->forbiddenFunctionNames, $this->forbiddenFunctions);	3✔
107
108	$targets = array_unique($register);	3✔
109	$targets[] = T_NAME_FULLY_QUALIFIED;	3✔
110
111	return $targets;	3✔
112
113	}//end register()
114
115
116	/**
117	* Processes this test, when one of its tokens is encountered.
118	*
119	* @param \PHP_CodeSniffer\Files\File $phpcsFile The file being scanned.
120	* @param int $stackPtr The position of the current token in
121	* the stack passed in $tokens.
122	*
123	* @return void
124	*/
125	public function process(File $phpcsFile, $stackPtr)	3✔
126	{
127	$tokens = $phpcsFile->getTokens();	3✔
128
129	$ignore = [	2✔
130	T_DOUBLE_COLON => true,	3✔
131	T_OBJECT_OPERATOR => true,	3✔
132	T_NULLSAFE_OBJECT_OPERATOR => true,	3✔
133	T_FUNCTION => true,	3✔
134	T_CONST => true,	3✔
135	T_PUBLIC => true,	3✔
136	T_PRIVATE => true,	3✔
137	T_PROTECTED => true,	3✔
138	T_AS => true,	3✔
139	T_NEW => true,	3✔
140	T_INSTEADOF => true,	3✔
141	T_IMPLEMENTS => true,	3✔
142	];	2✔
143
144	$prevToken = $phpcsFile->findPrevious(Tokens::EMPTY_TOKENS, ($stackPtr - 1), null, true);	3✔
145
146	if (isset($ignore[$tokens[$prevToken]['code']]) === true) {	3✔
147	// Not a call to a PHP function.
148	return;	3✔
149	}
150
151	$nextToken = $phpcsFile->findNext(Tokens::EMPTY_TOKENS, ($stackPtr + 1), null, true);	3✔
152	if (isset($ignore[$tokens[$nextToken]['code']]) === true) {	3✔
153	// Not a call to a PHP function.
154	return;	3✔
155	}
156
157	if (($tokens[$stackPtr]['code'] === T_STRING \|\| $tokens[$stackPtr]['code'] === T_NAME_FULLY_QUALIFIED)	3✔
158	&& $tokens[$nextToken]['code'] !== T_OPEN_PARENTHESIS	3✔
159	) {
160	// Not a call to a PHP function.
161	return;	3✔
162	}
163
164	if (empty($tokens[$stackPtr]['nested_attributes']) === false) {	3✔
165	// Class instantiation in attribute, not function call.
166	return;	3✔
167	}
168
169	$function = strtolower($tokens[$stackPtr]['content']);	3✔
170	if ($tokens[$stackPtr]['code'] === T_NAME_FULLY_QUALIFIED) {	3✔
171	$function = ltrim($function, '\\');	3✔
172	}
173
174	$pattern = null;	3✔
175	if ($this->patternMatch === true) {	3✔
176	$count = 0;	×
177	$pattern = preg_replace(	×
178	$this->forbiddenFunctionNames,	×
179	$this->forbiddenFunctionNames,	×
180	$function,	×
181	1,	×
182	$count	×
183	);
184
185	if ($count === 0) {	×
186	return;	×
187	}
188
189	// Remove the pattern delimiters and modifier.
190	$pattern = substr($pattern, 1, -2);	×
191	} else {
192	if (in_array($function, $this->forbiddenFunctionNames, true) === false) {	3✔
193	return;	3✔
194	}
195	}//end if
196
197	$this->addError($phpcsFile, $stackPtr, $function, $pattern);	3✔
198
199	}//end process()	1✔
200
201
202	/**
203	* Generates the error or warning for this sniff.
204	*
205	* @param \PHP_CodeSniffer\Files\File $phpcsFile The file being scanned.
206	* @param int $stackPtr The position of the forbidden function
207	* in the token array.
208	* @param string $function The name of the forbidden function.
209	* @param string $pattern The pattern used for the match.
210	*
211	* @return void
212	*/
213	protected function addError($phpcsFile, $stackPtr, $function, $pattern=null)	3✔
214	{
215	$data = [$function];	3✔
216	$error = 'The use of function %s() is ';	3✔
217	if ($this->error === true) {	3✔
218	$type = 'Found';	3✔
219	$error .= 'forbidden';	3✔
220	} else {
221	$type = 'Discouraged';	×
222	$error .= 'discouraged';	×
223	}
224
225	if ($pattern === null) {	3✔
226	$pattern = strtolower($function);	3✔
227	}
228
229	if ($this->forbiddenFunctions[$pattern] !== null) {	3✔
230	$type .= 'WithAlternative';	3✔
231	$data[] = $this->forbiddenFunctions[$pattern];	3✔
232	$error .= '; use %s() instead';	3✔
233	}
234
235	if ($this->error === true) {	3✔
236	$phpcsFile->addError($error, $stackPtr, $type, $data);	3✔
237	} else {
238	$phpcsFile->addWarning($error, $stackPtr, $type, $data);	×
239	}
240
241	}//end addError()	1✔
242
243
244	}//end class

PHPCSStandards / PHP_CodeSniffer / 15253296250

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