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Display scrubbed HTML attachments inline on attachment view page.

This commit is contained in:
Brion Vibber 2010-03-17 13:58:25 -07:00
parent 3a72c70b7e
commit f797a10256
1 changed files with 62 additions and 0 deletions
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62
lib/attachmentlist.php
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@ -330,6 +330,13 @@ class Attachment extends AttachmentListItem
$this->out->element('param', array('name' => 'autoStart', 'value' => 1));
$this->out->elementEnd('object');
break;
case 'text/html':
if ($this->attachment->filename) {
// Locally-uploaded HTML. Scrub and display inline.
$this->showHtmlFile($this->attachment);
}
break;
}
}
} else {
@ -356,5 +363,60 @@ class Attachment extends AttachmentListItem
}
}
}
protected function showHtmlFile(File $attachment)
{
$body = $this->scrubHtmlFile($attachment);
if ($body) {
$this->out->elementStart('div', array('class' => 'inline-attachment'));
$this->out->raw($body);
$this->out->elementEnd('div');
}
}
/**
* @return mixed false on failure, HTML fragment string on success
*/
protected function scrubHtmlFile(File $attachment)
{
$path = File::path($attachment->filename);
if (!file_exists($path) || !is_readable($path)) {
common_log(LOG_ERR, "Missing local HTML attachment $path");
return false;
}
$raw = file_get_contents($path);
// Normalize...
$dom = new DOMDocument();
if(!$dom->loadHTML($raw)) {
common_log(LOG_ERR, "Bad HTML in local HTML attachment $path");
return false;
}
// Remove <script>s or htmlawed will dump their contents into output!
// Note: removing child nodes while iterating seems to mess things up,
// hence the double loop.
$scripts = array();
foreach ($dom->getElementsByTagName('script') as $script) {
$scripts[] = $script;
}
foreach ($scripts as $script) {
common_log(LOG_DEBUG, $script->textContent);
$script->parentNode->removeChild($script);
}
// Trim out everything outside the body...
$body = $dom->saveHTML();
$body = preg_replace('/^.*<body[^>]*>/is', '', $body);
$body = preg_replace('/<\/body[^>]*>.*$/is', '', $body);
require_once INSTALLDIR.'/extlib/htmLawed/htmLawed.php';
$config = array('safe' => 1,
'deny_attribute' => 'id,style,on*',
'comment' => 1); // remove comments
$scrubbed = htmLawed($body, $config);
return $scrubbed;
}
}