← All changes | classes/helpers/FrmSerializedStringParserHelper.php +43 -127 6.26.1 → 6.8 View file →

		@@ -37,160 +37,76 @@
37	37	* Parse a string containing a serialized data structure.
38	38	* This is the initial entry point into the recursive parser.
39	39	*
40	40	* @param string $string
41		- *
42	41	* @return mixed
43	42	*/
44	43	public function parse( $string ) {
45		- $unserialized_data = $this->do_parse( new FrmStringReaderHelper( $string ) );
46		-
47		- if ( is_array( $unserialized_data ) && $this->serialized_string_is_invalid( $string ) ) {
48		- return array_filter( $unserialized_data, array( $this, 'serialized_value_is_valid' ) );
49		- }
50		-
51		- return $unserialized_data;
	44	+ return $this->do_parse( new FrmStringReaderHelper( $string ) );
52	45	}
53	46
54	47	/**
55		- * Check if an unserialized value is valid.
56		- *
57		- * @since 6.20
58		- *
59		- * @param mixed $value
60		- *
61		- * @return bool
62		- */
63		- private function serialized_value_is_valid( $value ) {
64		- return ! is_string( $value ) || strpos( $value, ';s:' ) === false;
65		- }
66		-
67		- /**
68		- * @since 6.20
69		- *
70		- * @param string $string
71		- *
72		- * @return bool
73		- */
74		- private function serialized_string_is_invalid( $string ) {
75		- $invalid_substrings = array(
76		- ';s:10:\"a"',
77		- ';s:";',
78		- );
79		-
80		- foreach ( $invalid_substrings as $invalid ) {
81		- if ( strpos( $string, $invalid ) !== false ) {
82		- return true;
83		- }
84		- }
85		-
86		- return false;
87		- }
88		-
89		- /**
90	48	* This is the recursive parser.
91	49	*
92	50	* @param FrmStringReaderHelper $string
93		- *
94		- * @return array|bool|float|int|string|null
	51	+ * @return mixed
95	52	*/
96	53	private function do_parse( $string ) {
	54	+ $val = null;
	55	+
97	56	// May be : or ; as a terminator, depending on what the data type is.
98		- $type = $string->read( 1 );
99		- $string->skip_next_character();
	57	+ $type = substr( $string->read( 2 ), 0, 1 );
100	58
101	59	switch ( $type ) {
102	60	case 'a':
103		- return $this->parse_array( $string );
	61	+ // Associative array: a:length:{[index][value]...}
	62	+ $count = (int) $string->read_until( ':' );
104	63
105		- case 's':
106		- return $this->parse_string( $string );
	64	+ // Eat the opening "{" of the array.
	65	+ $string->read( 1 );
107	66
108		- case 'i':
109		- return $this->parse_int( $string );
	67	+ $val = array();
	68	+ for ( $i = 0; $i < $count; $i++ ) {
	69	+ $array_key = $this->do_parse( $string );
	70	+ $array_value = $this->do_parse( $string );
110	71
111		- case 'd':
112		- return $this->parse_float( $string );
	72	+ if ( ! is_array( $array_key ) ) {
	73	+ $val[ $array_key ] = $array_value;
	74	+ }
	75	+ }
113	76
114		- case 'b':
115		- return $this->parse_bool( $string );
116		- }
	77	+ // Eat "}" terminating the array.
	78	+ $string->read( 1 );
	79	+ break;
117	80
118		- // Includes case 'N' and case 'O'.
119		- // Treat a serialized object or anything unexpected as Null.
120		- return null;
121		- }
	81	+ case 's':
	82	+ $len = (int) $string->read_until( ':' );
	83	+ $val = $string->read( $len + 2 );
122	84
123		- /**
124		- * @param FrmStringReaderHelper $string
125		- *
126		- * @return array
127		- */
128		- private function parse_array( $string ) {
129		- // Associative array: a:length:{[index][value]...}
130		- $count = (int) $string->read_until( ':' );
	85	+ // Eat the separator.
	86	+ $string->read( 1 );
	87	+ break;
131	88
132		- // Eat the opening "{" of the array.
133		- $string->skip_next_character();
	89	+ case 'i':
	90	+ $val = (int) $string->read_until( ';' );
	91	+ break;
134	92
135		- $val = array();
	93	+ case 'd':
	94	+ $val = (float) $string->read_until( ';' );
	95	+ break;
136	96
137		- for ( $i = 0; $i < $count; $i++ ) {
138		- $array_key = $this->do_parse( $string );
139		- $array_value = $this->do_parse( $string );
	97	+ case 'b':
	98	+ // Boolean is 0 or 1.
	99	+ $bool = $string->read( 2 );
	100	+ $val = substr( $bool, 0, 1 ) == '1';
	101	+ break;
140	102
141		- if ( ! is_array( $array_key ) ) {
142		- $val[ $array_key ] = $array_value;
143		- }
144		- }
	103	+ default:
	104	+ // Includes case 'N' and case 'O'.
	105	+ // Treat a serialized object or anything unexpected as Null.
	106	+ $val = null;
	107	+ break;
	108	+ }//end switch
145	109
146		- // Eat "}" terminating the array.
147		- $string->skip_next_character();
148		-
149		- return $val;
150		- }
151		-
152		- /**
153		- * @param FrmStringReaderHelper $string
154		- *
155		- * @return string
156		- */
157		- private function parse_string( $string ) {
158		- $len = (int) $string->read_until( ':' );
159		- $val = $string->read( $len + 2 );
160		-
161		- // Eat the separator.
162		- $string->skip_next_character();
163		-
164		- return $val;
165		- }
166		-
167		- /**
168		- * @param FrmStringReaderHelper $string
169		- *
170		- * @return int
171		- */
172		- private function parse_int( $string ) {
173		- return (int) $string->read_until( ';' );
174		- }
175		-
176		- /**
177		- * @param FrmStringReaderHelper $string
178		- *
179		- * @return float
180		- */
181		- private function parse_float( $string ) {
182		- return (float) $string->read_until( ';' );
183		- }
184		-
185		- /**
186		- * @param FrmStringReaderHelper $string
187		- *
188		- * @return bool
189		- */
190		- private function parse_bool( $string ) {
191		- // Boolean is 0 or 1.
192		- $val = $string->read( 1 ) === '1';
193		- $string->skip_next_character();
194	110	return $val;
195	111	}
196	112	}