eliseuamaro/gnu-social
1
0
Fork 0
forked from GNUsocial/gnu-social
Code Issues Pull Requests Releases Wiki Activity

[UTIL][HTML][TESTS] Fix test and implementation and expand HTML generation utilities

Browse Source
This commit is contained in:
Hugo Sales
2021-11-16 13:12:32 +00:00
parent fe755f7c42
commit 0e104a9701
2 changed files with 50 additions and 41 deletions
Download Patch File Download Diff File Expand all files Collapse all files

71
src/Util/HTML.php
View File

@@ -34,17 +34,25 @@ use InvalidArgumentException;
abstract class HTML
{
public const ALLOWED_TAGS = ['p', 'br', 'a', 'span'];
/**
* Tags whose content is sensitive to indentation, so we shouldn't indent them
*/
public const NO_INDENT_TAGS = ['a', 'b', 'em', 'i', 'q', 's', 'p', 'sub', 'sup', 'u'];
public const ALLOWED_TAGS = ['p', 'br', 'a', 'span', 'div'];
public const FORBIDDEN_ATTRIBUTES = [
'onerror', 'form', 'onforminput', 'onbeforescriptexecute', 'formaction', 'onfocus', 'onload',
'data', 'event', 'autofocus', 'onactivate', 'onanimationstart', 'onwebkittransitionend', 'onblur', 'poster',
'onratechange', 'ontoggle', 'onscroll', 'actiontype', 'dirname', 'srcdoc',
];
public const SELF_CLOSING_TAG = ['area', 'base', 'br', 'col', 'embed', 'hr', 'img', 'link', 'meta', 'param', 'source', 'track', 'wbr'];
/**
* Creates an HTML tag without attributes
*/
public static function tag(string $tag, mixed $attrs = null, mixed $content = null, array $options = []): array
public static function tag(string $tag, mixed $attrs = null, mixed $content = null, array $options = []): string
{
return self::attr_tag($tag, $attrs ?? '', $content ?? '', $options);
}
@@ -52,20 +60,20 @@ abstract class HTML
/**
* Create tag, possibly with attributes and indentation
*/
private static function attr_tag(string $tag, mixed $attrs, mixed $content = '', array $options = []): array
private static function attr_tag(string $tag, mixed $attrs, mixed $content = '', array $options = []): string
{
$html = '<' . $tag . (\is_string($attrs) ? ($attrs ? ' ' : '') . $attrs : self::attr($attrs, $options));
if ($options['empty'] ?? false) {
$html .= '/>';
if (\in_array($tag, self::SELF_CLOSING_TAG)) {
$html .= '>';
} else {
if ($options['indent'] ?? true) {
if (!\in_array($tag, self::NO_INDENT_TAGS) && ($options['indent'] ?? true)) {
$inner = Formatting::indent($content);
$html .= ">\n" . ($inner == '' ? '' : $inner . "\n") . "</{$tag}>";
} else {
$html .= ">{$content}</{$tag}>";
}
}
return explode("\n", $html);
return $html;
}
/**
@@ -73,32 +81,29 @@ abstract class HTML
*/
private static function attr(array $attrs, array $options = []): string
{
return ' ' . implode(
' ',
F\map(
$attrs,
/**
* Convert an attr ($key), $val pair to an HTML attribute, but validate to exclude some vectors of injection
*/
function (string $val, string $key, array $_): string {
if (\in_array($key, array_merge($options['forbidden_attributes'] ?? [], self::FORBIDDEN_ATTRIBUTES))
|| str_starts_with($val, 'javascript:')) {
throw new InvalidArgumentException("HTML::html: Attribute {$key} is not allowed");
}
if (!($options['raw'] ?? false)) {
$val = htmlspecialchars($val, flags: \ENT_QUOTES | \ENT_SUBSTITUTE, double_encode: false);
}
return "{$key}=\"{$val}\"";
},
),
);
return ' ' . implode(' ', F\map($attrs, [self::class, '_process_attribute']));
}
/**
* Convert an attr ($key), $val pair to an HTML attribute, but validate to exclude some vectors of injection
*/
public static function _process_attribute(string $val, string $key): string
{
if (\in_array($key, array_merge($options['forbidden_attributes'] ?? [], self::FORBIDDEN_ATTRIBUTES))
|| str_starts_with($val, 'javascript:')) {
throw new InvalidArgumentException("HTML::html: Attribute {$key} is not allowed");
}
if (!($options['raw'] ?? false)) {
$val = htmlspecialchars($val, flags: \ENT_QUOTES | \ENT_SUBSTITUTE, double_encode: false);
}
return "{$key}=\"{$val}\"";
}
/**
* @param array|string $html The input to convert to HTML
* @param array $options = [] ['allowed_tags' => string[], 'forbidden_attributes' => string[], 'raw' => bool, 'indent' => bool]
*/
public static function html(string|array $html, array $options = [], int $indent = 1): string
public static function html(string|array $html, array $options = []): string
{
if (\is_string($html)) {
if ($options['raw'] ?? false) {
@@ -109,18 +114,18 @@ abstract class HTML
} else {
$out = '';
foreach ($html as $tag => $contents) {
if ($contents['empty'] ?? false) {
$out .= "<{$tag}/>";
if (\in_array($tag, self::SELF_CLOSING_TAG)) {
$out .= "<{$tag}>";
} else {
$attrs = isset($contents['attrs']) ? self::attr(array_shift($contents), $options) : '';
$is_tag = is_string($tag) && preg_match('/[A-Za-z][A-Za-z0-9]*/', $tag);
$inner = self::html($contents, $options, $indent + 1);
$is_tag = \is_string($tag) && preg_match('/[A-Za-z][A-Za-z0-9]*/', $tag);
$inner = self::html($contents, $options);
if ($is_tag) {
if (!\in_array($tag, array_merge($options['allowed_tags'] ?? [], self::ALLOWED_TAGS))) {
throw new InvalidArgumentException("HTML::html: Tag {$tag} is not allowed");
}
if (!empty($inner)) {
$inner = ($options['indent'] ?? true) ? ("\n" . Formatting::indent($inner, $indent) . "\n") : $inner;
if (!empty($inner) && !\in_array($tag, self::NO_INDENT_TAGS) && ($options['indent'] ?? true)) {
$inner = "\n" . Formatting::indent($inner) . "\n";
}
$out .= "<{$tag}{$attrs}>{$inner}</{$tag}>";
} else {