diff options
Diffstat (limited to '3rdparty/htmlpurifier/library/HTMLPurifier/AttrDef/CSS.php')
| -rw-r--r-- | 3rdparty/htmlpurifier/library/HTMLPurifier/AttrDef/CSS.php | 193 |
1 files changed, 106 insertions, 87 deletions
diff --git a/3rdparty/htmlpurifier/library/HTMLPurifier/AttrDef/CSS.php b/3rdparty/htmlpurifier/library/HTMLPurifier/AttrDef/CSS.php index 1e7b886ec..02c1641fb 100644 --- a/3rdparty/htmlpurifier/library/HTMLPurifier/AttrDef/CSS.php +++ b/3rdparty/htmlpurifier/library/HTMLPurifier/AttrDef/CSS.php @@ -1,87 +1,106 @@ -<?php
-
-/**
- * Validates the HTML attribute style, otherwise known as CSS.
- * @note We don't implement the whole CSS specification, so it might be
- * difficult to reuse this component in the context of validating
- * actual stylesheet declarations.
- * @note If we were really serious about validating the CSS, we would
- * tokenize the styles and then parse the tokens. Obviously, we
- * are not doing that. Doing that could seriously harm performance,
- * but would make these components a lot more viable for a CSS
- * filtering solution.
- */
-class HTMLPurifier_AttrDef_CSS extends HTMLPurifier_AttrDef
-{
-
- public function validate($css, $config, $context) {
-
- $css = $this->parseCDATA($css);
-
- $definition = $config->getCSSDefinition();
-
- // we're going to break the spec and explode by semicolons.
- // This is because semicolon rarely appears in escaped form
- // Doing this is generally flaky but fast
- // IT MIGHT APPEAR IN URIs, see HTMLPurifier_AttrDef_CSSURI
- // for details
-
- $declarations = explode(';', $css);
- $propvalues = array();
-
- /**
- * Name of the current CSS property being validated.
- */
- $property = false;
- $context->register('CurrentCSSProperty', $property);
-
- foreach ($declarations as $declaration) {
- if (!$declaration) continue;
- if (!strpos($declaration, ':')) continue;
- list($property, $value) = explode(':', $declaration, 2);
- $property = trim($property);
- $value = trim($value);
- $ok = false;
- do {
- if (isset($definition->info[$property])) {
- $ok = true;
- break;
- }
- if (ctype_lower($property)) break;
- $property = strtolower($property);
- if (isset($definition->info[$property])) {
- $ok = true;
- break;
- }
- } while(0);
- if (!$ok) continue;
- // inefficient call, since the validator will do this again
- if (strtolower(trim($value)) !== 'inherit') {
- // inherit works for everything (but only on the base property)
- $result = $definition->info[$property]->validate(
- $value, $config, $context );
- } else {
- $result = 'inherit';
- }
- if ($result === false) continue;
- $propvalues[$property] = $result;
- }
-
- $context->destroy('CurrentCSSProperty');
-
- // procedure does not write the new CSS simultaneously, so it's
- // slightly inefficient, but it's the only way of getting rid of
- // duplicates. Perhaps config to optimize it, but not now.
-
- $new_declarations = '';
- foreach ($propvalues as $prop => $value) {
- $new_declarations .= "$prop:$value;";
- }
-
- return $new_declarations ? $new_declarations : false;
-
- }
-
-}
-
-// vim: et sw=4 sts=4
+<?php + +/** + * Validates the HTML attribute style, otherwise known as CSS. + * @note We don't implement the whole CSS specification, so it might be + * difficult to reuse this component in the context of validating + * actual stylesheet declarations. + * @note If we were really serious about validating the CSS, we would + * tokenize the styles and then parse the tokens. Obviously, we + * are not doing that. Doing that could seriously harm performance, + * but would make these components a lot more viable for a CSS + * filtering solution. + */ +class HTMLPurifier_AttrDef_CSS extends HTMLPurifier_AttrDef +{ + + /** + * @param string $css + * @param HTMLPurifier_Config $config + * @param HTMLPurifier_Context $context + * @return bool|string + */ + public function validate($css, $config, $context) + { + $css = $this->parseCDATA($css); + + $definition = $config->getCSSDefinition(); + + // we're going to break the spec and explode by semicolons. + // This is because semicolon rarely appears in escaped form + // Doing this is generally flaky but fast + // IT MIGHT APPEAR IN URIs, see HTMLPurifier_AttrDef_CSSURI + // for details + + $declarations = explode(';', $css); + $propvalues = array(); + + /** + * Name of the current CSS property being validated. + */ + $property = false; + $context->register('CurrentCSSProperty', $property); + + foreach ($declarations as $declaration) { + if (!$declaration) { + continue; + } + if (!strpos($declaration, ':')) { + continue; + } + list($property, $value) = explode(':', $declaration, 2); + $property = trim($property); + $value = trim($value); + $ok = false; + do { + if (isset($definition->info[$property])) { + $ok = true; + break; + } + if (ctype_lower($property)) { + break; + } + $property = strtolower($property); + if (isset($definition->info[$property])) { + $ok = true; + break; + } + } while (0); + if (!$ok) { + continue; + } + // inefficient call, since the validator will do this again + if (strtolower(trim($value)) !== 'inherit') { + // inherit works for everything (but only on the base property) + $result = $definition->info[$property]->validate( + $value, + $config, + $context + ); + } else { + $result = 'inherit'; + } + if ($result === false) { + continue; + } + $propvalues[$property] = $result; + } + + $context->destroy('CurrentCSSProperty'); + + // procedure does not write the new CSS simultaneously, so it's + // slightly inefficient, but it's the only way of getting rid of + // duplicates. Perhaps config to optimize it, but not now. + + $new_declarations = ''; + foreach ($propvalues as $prop => $value) { + $new_declarations .= "$prop:$value;"; + } + + return $new_declarations ? $new_declarations : false; + + } + +} + +// vim: et sw=4 sts=4 |