| 1 |
<?php |
| 2 |
|
| 3 |
namespace FluentForm\App\Services\FormBuilder; |
| 4 |
|
| 5 |
defined('ABSPATH') || die; |
| 6 |
|
| 7 |
/** |
| 8 |
* Decodes date configuration tokens stored by Fluent Forms 6.2.7-6.2.12. |
| 9 |
* |
| 10 |
* This is intentionally render-only. New saves retain the submitted advanced |
| 11 |
* configuration verbatim, while forms saved by those releases keep working |
| 12 |
* without a migration or resave. |
| 13 |
*/ |
| 14 |
class LegacyDateConfigDecoder |
| 15 |
{ |
| 16 |
const JS_STRING_FLAGS = JSON_HEX_TAG | JSON_HEX_AMP | JSON_HEX_APOS | JSON_HEX_QUOT; |
| 17 |
|
| 18 |
/** |
| 19 |
* Decode a legacy tokenized JSON object to executable Flatpickr config. |
| 20 |
* |
| 21 |
* Returns null when the value is not strict JSON or contains no exact |
| 22 |
* legacy token node, allowing callers to preserve the original value. |
| 23 |
* |
| 24 |
* @param string $json |
| 25 |
* |
| 26 |
* @return string|null |
| 27 |
*/ |
| 28 |
public static function decode($json) |
| 29 |
{ |
| 30 |
if (!is_string($json) || '' === $json) { |
| 31 |
return null; |
| 32 |
} |
| 33 |
|
| 34 |
$decoded = json_decode($json, true); |
| 35 |
|
| 36 |
if (JSON_ERROR_NONE !== json_last_error() || !is_array($decoded)) { |
| 37 |
return null; |
| 38 |
} |
| 39 |
|
| 40 |
$foundLegacyToken = false; |
| 41 |
$parts = []; |
| 42 |
|
| 43 |
foreach ($decoded as $key => $value) { |
| 44 |
$encodedKey = wp_json_encode((string) $key, self::JS_STRING_FLAGS); |
| 45 |
$rendered = in_array($key, ['defaultDate', 'minDate', 'maxDate', 'enable', 'disable'], true) |
| 46 |
? self::renderOption($key, $value, $foundLegacyToken) |
| 47 |
: wp_json_encode($value, self::JS_STRING_FLAGS); |
| 48 |
$parts[] = $encodedKey . ': ' . $rendered; |
| 49 |
} |
| 50 |
|
| 51 |
$javascript = '{' . implode(', ', $parts) . '}'; |
| 52 |
|
| 53 |
return $foundLegacyToken ? $javascript : null; |
| 54 |
} |
| 55 |
|
| 56 |
/** |
| 57 |
* Convert the restricted legacy expression tree to JavaScript. |
| 58 |
* |
| 59 |
* @param mixed $node |
| 60 |
* |
| 61 |
* @return string|null |
| 62 |
*/ |
| 63 |
private static function renderPredicate($node) |
| 64 |
{ |
| 65 |
static $functions = ['getDay' => 1, 'getMonth' => 1, 'getDate' => 1, 'getFullYear' => 1]; |
| 66 |
static $comparators = ['==' => 1, '===' => 1, '!=' => 1, '!==' => 1, '>=' => 1, '<=' => 1, '>' => 1, '<' => 1]; |
| 67 |
|
| 68 |
if (!is_array($node)) { |
| 69 |
return null; |
| 70 |
} |
| 71 |
|
| 72 |
foreach (['or' => ' || ', 'and' => ' && '] as $operator => $glue) { |
| 73 |
if (isset($node[$operator])) { |
| 74 |
if (1 !== count($node) || !is_array($node[$operator]) || [] === $node[$operator]) { |
| 75 |
return null; |
| 76 |
} |
| 77 |
|
| 78 |
$parts = []; |
| 79 |
foreach ($node[$operator] as $child) { |
| 80 |
$javascript = self::renderPredicate($child); |
| 81 |
if (null === $javascript) { |
| 82 |
return null; |
| 83 |
} |
| 84 |
$parts[] = $javascript; |
| 85 |
} |
| 86 |
|
| 87 |
return '(' . implode($glue, $parts) . ')'; |
| 88 |
} |
| 89 |
} |
| 90 |
|
| 91 |
if (3 !== count($node) || !isset($node['fn'], $node['cmp'], $node['val'])) { |
| 92 |
return null; |
| 93 |
} |
| 94 |
|
| 95 |
if ( |
| 96 |
!is_string($node['fn']) || |
| 97 |
!is_string($node['cmp']) || |
| 98 |
!isset($functions[$node['fn']], $comparators[$node['cmp']]) |
| 99 |
) { |
| 100 |
return null; |
| 101 |
} |
| 102 |
|
| 103 |
return 'date.' . $node['fn'] . '() ' . $node['cmp'] . ' ' . (int) $node['val']; |
| 104 |
} |
| 105 |
|
| 106 |
/** |
| 107 |
* Convert a decoded legacy config node to JavaScript. |
| 108 |
* |
| 109 |
* @param string $option |
| 110 |
* @param mixed $value |
| 111 |
* @param bool $foundLegacyToken |
| 112 |
* |
| 113 |
* @return string |
| 114 |
*/ |
| 115 |
private static function renderOption($option, $value, &$foundLegacyToken) |
| 116 |
{ |
| 117 |
if (in_array($option, ['defaultDate', 'minDate', 'maxDate'], true)) { |
| 118 |
if (is_array($value) && array_keys($value) === range(0, count($value) - 1)) { |
| 119 |
$parts = []; |
| 120 |
foreach ($value as $item) { |
| 121 |
$rendered = self::renderToken($item, ['date', 'fp_incr'], $foundLegacyToken); |
| 122 |
$parts[] = null === $rendered ? wp_json_encode($item, self::JS_STRING_FLAGS) : $rendered; |
| 123 |
} |
| 124 |
|
| 125 |
return '[' . implode(', ', $parts) . ']'; |
| 126 |
} |
| 127 |
$rendered = self::renderToken($value, ['date', 'fp_incr'], $foundLegacyToken); |
| 128 |
|
| 129 |
return null === $rendered ? wp_json_encode($value, self::JS_STRING_FLAGS) : $rendered; |
| 130 |
} |
| 131 |
|
| 132 |
if (is_array($value) && array_keys($value) === range(0, count($value) - 1)) { |
| 133 |
$parts = []; |
| 134 |
foreach ($value as $item) { |
| 135 |
$rendered = self::renderOptionItem($item, $foundLegacyToken); |
| 136 |
$parts[] = null === $rendered ? wp_json_encode($item, self::JS_STRING_FLAGS) : $rendered; |
| 137 |
} |
| 138 |
|
| 139 |
return '[' . implode(', ', $parts) . ']'; |
| 140 |
} |
| 141 |
|
| 142 |
$rendered = self::renderToken($value, ['date', 'fp_incr', 'disable_days', 'disable_expr'], $foundLegacyToken); |
| 143 |
|
| 144 |
return null === $rendered ? wp_json_encode($value, self::JS_STRING_FLAGS) : $rendered; |
| 145 |
} |
| 146 |
|
| 147 |
private static function renderOptionItem($item, &$foundLegacyToken) |
| 148 |
{ |
| 149 |
$rendered = self::renderToken($item, ['date', 'fp_incr', 'disable_days', 'disable_expr'], $foundLegacyToken); |
| 150 |
if (null !== $rendered || !is_array($item) || [] === $item) { |
| 151 |
return $rendered; |
| 152 |
} |
| 153 |
|
| 154 |
$keys = array_keys($item); |
| 155 |
sort($keys); |
| 156 |
if (['from', 'to'] !== $keys) { |
| 157 |
return null; |
| 158 |
} |
| 159 |
|
| 160 |
$parts = []; |
| 161 |
foreach (['from', 'to'] as $key) { |
| 162 |
$value = self::renderToken($item[$key], ['date', 'fp_incr'], $foundLegacyToken); |
| 163 |
$parts[] = wp_json_encode($key, self::JS_STRING_FLAGS) . ': ' . (null === $value |
| 164 |
? wp_json_encode($item[$key], self::JS_STRING_FLAGS) |
| 165 |
: $value); |
| 166 |
} |
| 167 |
|
| 168 |
return '{' . implode(', ', $parts) . '}'; |
| 169 |
} |
| 170 |
|
| 171 |
private static function renderToken($node, array $allowed, &$foundLegacyToken) |
| 172 |
{ |
| 173 |
if (!is_array($node) || 1 !== count($node)) { |
| 174 |
return null; |
| 175 |
} |
| 176 |
|
| 177 |
if (isset($node['__ff_fp_incr']) && in_array('fp_incr', $allowed, true)) { |
| 178 |
$foundLegacyToken = true; |
| 179 |
$days = (int) $node['__ff_fp_incr']; |
| 180 |
return $days ? "new Date().fp_incr({$days})" : 'new Date()'; |
| 181 |
} |
| 182 |
|
| 183 |
if (isset($node['__ff_disable_days']) && in_array('disable_days', $allowed, true) && is_array($node['__ff_disable_days'])) { |
| 184 |
$foundLegacyToken = true; |
| 185 |
$days = implode(', ', array_map('intval', $node['__ff_disable_days'])); |
| 186 |
return "function(date) { return [{$days}].indexOf(date.getDay()) !== -1; }"; |
| 187 |
} |
| 188 |
|
| 189 |
if (isset($node['__ff_date']) && in_array('date', $allowed, true)) { |
| 190 |
$foundLegacyToken = true; |
| 191 |
$date = is_string($node['__ff_date']) ? $node['__ff_date'] : ''; |
| 192 |
if (!preg_match('/^[0-9A-Za-z ,:.\\/\\-]{1,40}$/', $date)) { |
| 193 |
return 'null'; |
| 194 |
} |
| 195 |
|
| 196 |
return 'new Date(' . wp_json_encode($date, self::JS_STRING_FLAGS) . ')'; |
| 197 |
} |
| 198 |
|
| 199 |
if (isset($node['__ff_disable_expr']) && in_array('disable_expr', $allowed, true)) { |
| 200 |
$foundLegacyToken = true; |
| 201 |
$expression = self::renderPredicate($node['__ff_disable_expr']); |
| 202 |
return null === $expression ? 'null' : "function(date) { return {$expression}; }"; |
| 203 |
} |
| 204 |
|
| 205 |
return null; |
| 206 |
} |
| 207 |
} |
| 208 |
|
