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Merge pull request #10046 from MrPetovan/bug/10019-oembed-iframes-part-1

Use system.allowed_oembed config to allow iframe source
This commit is contained in:
Michael Vogel 2021-03-14 20:04:00 +01:00 committed by GitHub
commit ddbe8730ed
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GPG key ID: 4AEE18F83AFDEB23
6 changed files with 171 additions and 115 deletions

View file

@ -29,12 +29,10 @@ use Friendica\Content\Item;
use Friendica\Content\OEmbed;
use Friendica\Content\PageInfo;
use Friendica\Content\Smilies;
use Friendica\Content\Text\HTMLPurifier_URIScheme_cid;
use Friendica\Core\Hook;
use Friendica\Core\Logger;
use Friendica\Core\Protocol;
use Friendica\Core\Renderer;
use Friendica\Core\System;
use Friendica\DI;
use Friendica\Model\Contact;
use Friendica\Model\Event;
@ -1877,28 +1875,23 @@ class BBCode
$text
);
\HTMLPurifier_URISchemeRegistry::instance()->register('cid', new HTMLPurifier_URIScheme_cid());
// Default iframe allowed domains/path
$allowedIframeDomains = [
DI::baseUrl()->getHostname()
. (DI::baseUrl()->getUrlPath() ? '/' . DI::baseUrl()->getUrlPath() : '')
. '/oembed/', # The path part has to change with the source in Content\Oembed::iframe
'www.youtube.com/embed/',
'player.vimeo.com/video/',
];
$config = \HTMLPurifier_HTML5Config::createDefault();
$config->set('HTML.Doctype', 'HTML5');
$config->set('HTML.SafeIframe', true);
$config->set('URI.SafeIframeRegexp', '%^(?:
https://www.youtube.com/embed/
|
https://player.vimeo.com/video/
|
' . DI::baseUrl() . '/oembed/ # Has to change with the source in Content\Oembed::iframe
)%xi');
$config->set('Attr.AllowedRel', [
'noreferrer' => true,
'noopener' => true,
]);
$config->set('Attr.AllowedFrameTargets', [
'_blank' => true,
]);
$allowedIframeDomains = array_merge(
$allowedIframeDomains,
DI::config()->get('system', 'allowed_oembed') ?
explode(',', DI::config()->get('system', 'allowed_oembed'))
: []
);
$HTMLPurifier = new \HTMLPurifier($config);
$text = $HTMLPurifier->purify($text);
$text = HTML::purify($text, $allowedIframeDomains);
return $text;
}

View file

@ -961,4 +961,63 @@ class HTML
{
return str_replace('&', '&', $s);
}
/**
* Clean an HTML text for potentially harmful code
*
* @param string $text
* @param array $allowedIframeDomains List of allowed iframe source domains without the scheme
* @return string
*/
public static function purify(string $text, array $allowedIframeDomains = []): string
{
// Allows cid: URL scheme
\HTMLPurifier_URISchemeRegistry::instance()->register('cid', new HTMLPurifier_URIScheme_cid());
$config = \HTMLPurifier_HTML5Config::createDefault();
$config->set('HTML.Doctype', 'HTML5');
// Used to remove iframe with src attribute filtered out
$config->set('AutoFormat.RemoveEmpty', true);
$config->set('HTML.SafeIframe', true);
array_walk($allowedIframeDomains, function (&$domain) {
// Allow the domain and all its eventual sub-domains
$domain = '(?:(?!-)[A-Za-z0-9-]{1,63}(?<!-)\.)*' . preg_quote(trim($domain, '/'), '%');
});
$config->set('URI.SafeIframeRegexp',
'%^https://(?:
' . implode('|', $allowedIframeDomains) . '
)
(?:/|$) # Prevents bogus domains like youtube.com.fake.tld
%xi'
);
$config->set('Attr.AllowedRel', [
'noreferrer' => true,
'noopener' => true,
]);
$config->set('Attr.AllowedFrameTargets', [
'_blank' => true,
]);
/* Uncomment to debug HTMLPurifier behavior
$config->set('Core.CollectErrors', true);
$config->set('Core.MaintainLineNumbers', true);
*/
$HTMLPurifier = new \HTMLPurifier($config);
$text = $HTMLPurifier->purify($text);
/** @var \HTMLPurifier_ErrorCollector $errorCollector */
/* Uncomment to debug HTML Purifier behavior
$errorCollector = $HTMLPurifier->context->get('ErrorCollector');
var_dump($errorCollector->getRaw());
*/
return $text;
}
}

View file

@ -624,7 +624,7 @@ class Site extends BaseAdmin
'$allowed_sites' => ['allowed_sites', DI::l10n()->t('Allowed friend domains'), DI::config()->get('system', 'allowed_sites'), DI::l10n()->t('Comma separated list of domains which are allowed to establish friendships with this site. Wildcards are accepted. Empty to allow any domains')],
'$allowed_email' => ['allowed_email', DI::l10n()->t('Allowed email domains'), DI::config()->get('system', 'allowed_email'), DI::l10n()->t('Comma separated list of domains which are allowed in email addresses for registrations to this site. Wildcards are accepted. Empty to allow any domains')],
'$no_oembed_rich_content' => ['no_oembed_rich_content', DI::l10n()->t('No OEmbed rich content'), DI::config()->get('system', 'no_oembed_rich_content'), DI::l10n()->t('Don\'t show the rich content (e.g. embedded PDF), except from the domains listed below.')],
'$allowed_oembed' => ['allowed_oembed', DI::l10n()->t('Allowed OEmbed domains'), DI::config()->get('system', 'allowed_oembed'), DI::l10n()->t('Comma separated list of domains which oembed content is allowed to be displayed. Wildcards are accepted.')],
'$allowed_oembed' => ['allowed_oembed', DI::l10n()->t('Trusted third-party domains'), DI::config()->get('system', 'allowed_oembed'), DI::l10n()->t('Comma separated list of domains from which content is allowed to be embedded in posts like with OEmbed. All sub-domains of the listed domains are allowed as well.')],
'$block_public' => ['block_public', DI::l10n()->t('Block public'), DI::config()->get('system', 'block_public'), DI::l10n()->t('Check to block public access to all otherwise public personal pages on this site unless you are currently logged in.')],
'$force_publish' => ['publish_all', DI::l10n()->t('Force publish'), DI::config()->get('system', 'publish_all'), DI::l10n()->t('Check to force all profiles on this site to be listed in the site directory.') . '<strong>' . DI::l10n()->t('Enabling this may violate privacy laws like the GDPR') . '</strong>'],
'$global_directory' => ['directory', DI::l10n()->t('Global directory URL'), DI::config()->get('system', 'directory'), DI::l10n()->t('URL to the global directory. If this is not set, the global directory is completely unavailable to the application.')],

View file

@ -180,9 +180,7 @@ class Babel extends BaseModule
'content' => $html
];
$config = \HTMLPurifier_Config::createDefault();
$HTMLPurifier = new \HTMLPurifier($config);
$purified = $HTMLPurifier->purify($html);
$purified = Text\HTML::purify($html);
$results[] = [
'title' => DI::l10n()->t('HTML Purified (raw)'),

View file

@ -63,6 +63,9 @@ class BBCodeTest extends MockedTest
$this->configMock->shouldReceive('get')
->with('system', 'big_emojis')
->andReturn(false);
$this->configMock->shouldReceive('get')
->with('system', 'allowed_oembed')
->andReturn('');
$l10nMock = Mockery::mock(L10n::class);
$l10nMock->shouldReceive('t')->withAnyArgs()->andReturnUsing(function ($args) { return $args; });
@ -75,6 +78,8 @@ class BBCodeTest extends MockedTest
$this->dice->shouldReceive('create')
->with(BaseURL::class)
->andReturn($baseUrlMock);
$baseUrlMock->shouldReceive('getHostname')->withNoArgs()->andReturn('friendica.local');
$baseUrlMock->shouldReceive('getUrlPath')->withNoArgs()->andReturn('');
$config = \HTMLPurifier_HTML5Config::createDefault();
$config->set('HTML.Doctype', 'HTML5');

View file

@ -8,7 +8,7 @@ msgid ""
msgstr ""
"Project-Id-Version: 2021.03-rc\n"
"Report-Msgid-Bugs-To: \n"
"POT-Creation-Date: 2021-03-10 09:43-0500\n"
"POT-Creation-Date: 2021-03-14 13:43-0400\n"
"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
"Language-Team: LANGUAGE <LL@li.org>\n"
@ -912,7 +912,7 @@ msgstr ""
msgid "Previous"
msgstr ""
#: mod/cal.php:277 mod/events.php:421 src/Module/Install.php:196
#: mod/cal.php:277 mod/events.php:421 src/Module/Install.php:207
msgid "Next"
msgstr ""
@ -1290,12 +1290,12 @@ msgstr ""
#: src/Module/Admin/Blocklist/Server.php:99
#: src/Module/Admin/Blocklist/Server.php:100
#: src/Module/Admin/Item/Delete.php:70 src/Module/Debug/Probe.php:60
#: src/Module/Install.php:189 src/Module/Install.php:222
#: src/Module/Install.php:227 src/Module/Install.php:246
#: src/Module/Install.php:257 src/Module/Install.php:262
#: src/Module/Install.php:200 src/Module/Install.php:233
#: src/Module/Install.php:238 src/Module/Install.php:257
#: src/Module/Install.php:268 src/Module/Install.php:273
#: src/Module/Install.php:287 src/Module/Install.php:302
#: src/Module/Install.php:329 src/Module/Register.php:135
#: src/Module/Install.php:279 src/Module/Install.php:284
#: src/Module/Install.php:298 src/Module/Install.php:313
#: src/Module/Install.php:340 src/Module/Register.php:135
#: src/Module/Security/TwoFactor/Verify.php:99
#: src/Module/Settings/TwoFactor/Index.php:133
#: src/Module/Settings/TwoFactor/Verify.php:141
@ -1341,11 +1341,11 @@ msgstr ""
#: src/Module/Admin/Item/Source.php:65 src/Module/Contact/Advanced.php:132
#: src/Module/Contact/Poke.php:155 src/Module/Contact.php:604
#: src/Module/Debug/ActivityPubConversion.php:141
#: src/Module/Debug/Babel.php:315 src/Module/Debug/Localtime.php:64
#: src/Module/Debug/Babel.php:313 src/Module/Debug/Localtime.php:64
#: src/Module/Debug/Probe.php:55 src/Module/Debug/WebFinger.php:53
#: src/Module/Delegation.php:152 src/Module/FriendSuggest.php:129
#: src/Module/Install.php:234 src/Module/Install.php:276
#: src/Module/Install.php:313 src/Module/Invite.php:175
#: src/Module/Install.php:245 src/Module/Install.php:287
#: src/Module/Install.php:324 src/Module/Invite.php:175
#: src/Module/Item/Compose.php:144 src/Module/Profile/Profile.php:243
#: src/Module/Settings/Profile/Index.php:237 src/Object/Post.php:954
#: view/theme/duepuntozero/config.php:69 view/theme/frio/config.php:160
@ -2058,7 +2058,7 @@ msgid "Resubscribing to OStatus contacts"
msgstr ""
#: mod/repair_ostatus.php:50 src/Module/Debug/ActivityPubConversion.php:130
#: src/Module/Debug/Babel.php:295 src/Module/Security/TwoFactor/Verify.php:96
#: src/Module/Debug/Babel.php:293 src/Module/Security/TwoFactor/Verify.php:96
msgid "Error"
msgid_plural "Errors"
msgstr[0] ""
@ -3198,7 +3198,7 @@ msgstr ""
msgid "Email"
msgstr ""
#: src/Content/ContactSelector.php:127 src/Module/Debug/Babel.php:309
#: src/Content/ContactSelector.php:127 src/Module/Debug/Babel.php:307
msgid "Diaspora"
msgstr ""
@ -3620,11 +3620,11 @@ msgstr ""
msgid "Site map"
msgstr ""
#: src/Content/OEmbed.php:269
#: src/Content/OEmbed.php:270
msgid "Embedding disabled"
msgstr ""
#: src/Content/OEmbed.php:387
#: src/Content/OEmbed.php:388
msgid "Embedded content"
msgstr ""
@ -3636,39 +3636,39 @@ msgstr ""
msgid "last"
msgstr ""
#: src/Content/Text/BBCode.php:963 src/Content/Text/BBCode.php:1607
#: src/Content/Text/BBCode.php:1608
#: src/Content/Text/BBCode.php:961 src/Content/Text/BBCode.php:1605
#: src/Content/Text/BBCode.php:1606
msgid "Image/photo"
msgstr ""
#: src/Content/Text/BBCode.php:1065
#: src/Content/Text/BBCode.php:1063
#, php-format
msgid ""
"<a href=\"%1$s\" target=\"_blank\" rel=\"noopener noreferrer\">%2$s</a> %3$s"
msgstr ""
#: src/Content/Text/BBCode.php:1090 src/Model/Item.php:2732
#: src/Content/Text/BBCode.php:1088 src/Model/Item.php:2732
#: src/Model/Item.php:2738
msgid "link to source"
msgstr ""
#: src/Content/Text/BBCode.php:1525 src/Content/Text/HTML.php:947
#: src/Content/Text/BBCode.php:1523 src/Content/Text/HTML.php:947
msgid "Click to open/close"
msgstr ""
#: src/Content/Text/BBCode.php:1556
#: src/Content/Text/BBCode.php:1554
msgid "$1 wrote:"
msgstr ""
#: src/Content/Text/BBCode.php:1610 src/Content/Text/BBCode.php:1611
#: src/Content/Text/BBCode.php:1608 src/Content/Text/BBCode.php:1609
msgid "Encrypted content"
msgstr ""
#: src/Content/Text/BBCode.php:1824
#: src/Content/Text/BBCode.php:1822
msgid "Invalid source protocol"
msgstr ""
#: src/Content/Text/BBCode.php:1839
#: src/Content/Text/BBCode.php:1837
msgid "Invalid link protocol"
msgstr ""
@ -3916,8 +3916,8 @@ msgid ""
"or mysql."
msgstr ""
#: src/Core/Installer.php:199 src/Module/Install.php:195
#: src/Module/Install.php:354
#: src/Core/Installer.php:199 src/Module/Install.php:206
#: src/Module/Install.php:365
msgid "Please see the file \"doc/INSTALL.md\"."
msgstr ""
@ -5822,15 +5822,15 @@ msgstr ""
msgid "Open"
msgstr ""
#: src/Module/Admin/Site.php:522 src/Module/Install.php:204
#: src/Module/Admin/Site.php:522 src/Module/Install.php:215
msgid "No SSL policy, links will track page SSL state"
msgstr ""
#: src/Module/Admin/Site.php:523 src/Module/Install.php:205
#: src/Module/Admin/Site.php:523 src/Module/Install.php:216
msgid "Force all links to use SSL"
msgstr ""
#: src/Module/Admin/Site.php:524 src/Module/Install.php:206
#: src/Module/Admin/Site.php:524 src/Module/Install.php:217
msgid "Self-signed certificate, use SSL for local links only (discouraged)"
msgstr ""
@ -5993,11 +5993,11 @@ msgstr ""
msgid "Theme for mobile devices"
msgstr ""
#: src/Module/Admin/Site.php:608 src/Module/Install.php:214
#: src/Module/Admin/Site.php:608 src/Module/Install.php:225
msgid "SSL link policy"
msgstr ""
#: src/Module/Admin/Site.php:608 src/Module/Install.php:216
#: src/Module/Admin/Site.php:608 src/Module/Install.php:227
msgid "Determines whether generated links should be forced to use SSL"
msgstr ""
@ -6149,13 +6149,14 @@ msgid ""
msgstr ""
#: src/Module/Admin/Site.php:627
msgid "Allowed OEmbed domains"
msgid "Trusted third-party domains"
msgstr ""
#: src/Module/Admin/Site.php:627
msgid ""
"Comma separated list of domains which oembed content is allowed to be "
"displayed. Wildcards are accepted."
"Comma separated list of domains from which content is allowed to be embedded "
"in posts like with OEmbed. All sub-domains of the listed domains are allowed "
"as well."
msgstr ""
#: src/Module/Admin/Site.php:628
@ -8063,87 +8064,87 @@ msgstr ""
msgid "HTML Input"
msgstr ""
#: src/Module/Debug/Babel.php:188
#: src/Module/Debug/Babel.php:186
msgid "HTML Purified (raw)"
msgstr ""
#: src/Module/Debug/Babel.php:193
#: src/Module/Debug/Babel.php:191
msgid "HTML Purified (hex)"
msgstr ""
#: src/Module/Debug/Babel.php:198
#: src/Module/Debug/Babel.php:196
msgid "HTML Purified"
msgstr ""
#: src/Module/Debug/Babel.php:204
#: src/Module/Debug/Babel.php:202
msgid "HTML::toBBCode"
msgstr ""
#: src/Module/Debug/Babel.php:210
#: src/Module/Debug/Babel.php:208
msgid "HTML::toBBCode => BBCode::convert"
msgstr ""
#: src/Module/Debug/Babel.php:215
#: src/Module/Debug/Babel.php:213
msgid "HTML::toBBCode => BBCode::convert (raw HTML)"
msgstr ""
#: src/Module/Debug/Babel.php:221
#: src/Module/Debug/Babel.php:219
msgid "HTML::toBBCode => BBCode::toPlaintext"
msgstr ""
#: src/Module/Debug/Babel.php:227
#: src/Module/Debug/Babel.php:225
msgid "HTML::toMarkdown"
msgstr ""
#: src/Module/Debug/Babel.php:233
#: src/Module/Debug/Babel.php:231
msgid "HTML::toPlaintext"
msgstr ""
#: src/Module/Debug/Babel.php:239
#: src/Module/Debug/Babel.php:237
msgid "HTML::toPlaintext (compact)"
msgstr ""
#: src/Module/Debug/Babel.php:257
#: src/Module/Debug/Babel.php:255
msgid "Decoded post"
msgstr ""
#: src/Module/Debug/Babel.php:278
#: src/Module/Debug/Babel.php:276
msgid "Post array before expand entities"
msgstr ""
#: src/Module/Debug/Babel.php:285
#: src/Module/Debug/Babel.php:283
msgid "Post converted"
msgstr ""
#: src/Module/Debug/Babel.php:290
#: src/Module/Debug/Babel.php:288
msgid "Converted body"
msgstr ""
#: src/Module/Debug/Babel.php:296
#: src/Module/Debug/Babel.php:294
msgid "Twitter addon is absent from the addon/ folder."
msgstr ""
#: src/Module/Debug/Babel.php:306
#: src/Module/Debug/Babel.php:304
msgid "Babel Diagnostic"
msgstr ""
#: src/Module/Debug/Babel.php:307
#: src/Module/Debug/Babel.php:305
msgid "Source text"
msgstr ""
#: src/Module/Debug/Babel.php:308
#: src/Module/Debug/Babel.php:306
msgid "BBCode"
msgstr ""
#: src/Module/Debug/Babel.php:310
#: src/Module/Debug/Babel.php:308
msgid "Markdown"
msgstr ""
#: src/Module/Debug/Babel.php:311
#: src/Module/Debug/Babel.php:309
msgid "HTML"
msgstr ""
#: src/Module/Debug/Babel.php:313
#: src/Module/Debug/Babel.php:311
msgid "Twitter Source / Tweet URL (requires API key)"
msgstr ""
@ -8420,155 +8421,155 @@ msgstr ""
msgid "Method Not Allowed."
msgstr ""
#: src/Module/Install.php:177
#: src/Module/Install.php:188
msgid "Friendica Communications Server - Setup"
msgstr ""
#: src/Module/Install.php:188
#: src/Module/Install.php:199
msgid "System check"
msgstr ""
#: src/Module/Install.php:190 src/Module/Install.php:247
#: src/Module/Install.php:330
#: src/Module/Install.php:201 src/Module/Install.php:258
#: src/Module/Install.php:341
msgid "Requirement not satisfied"
msgstr ""
#: src/Module/Install.php:191
#: src/Module/Install.php:202
msgid "Optional requirement not satisfied"
msgstr ""
#: src/Module/Install.php:192
#: src/Module/Install.php:203
msgid "OK"
msgstr ""
#: src/Module/Install.php:197
#: src/Module/Install.php:208
msgid "Check again"
msgstr ""
#: src/Module/Install.php:212
#: src/Module/Install.php:223
msgid "Base settings"
msgstr ""
#: src/Module/Install.php:219
#: src/Module/Install.php:230
msgid "Host name"
msgstr ""
#: src/Module/Install.php:221
#: src/Module/Install.php:232
msgid ""
"Overwrite this field in case the determinated hostname isn't right, "
"otherweise leave it as is."
msgstr ""
#: src/Module/Install.php:224
#: src/Module/Install.php:235
msgid "Base path to installation"
msgstr ""
#: src/Module/Install.php:226
#: src/Module/Install.php:237
msgid ""
"If the system cannot detect the correct path to your installation, enter the "
"correct path here. This setting should only be set if you are using a "
"restricted system and symbolic links to your webroot."
msgstr ""
#: src/Module/Install.php:229
#: src/Module/Install.php:240
msgid "Sub path of the URL"
msgstr ""
#: src/Module/Install.php:231
#: src/Module/Install.php:242
msgid ""
"Overwrite this field in case the sub path determination isn't right, "
"otherwise leave it as is. Leaving this field blank means the installation is "
"at the base URL without sub path."
msgstr ""
#: src/Module/Install.php:242
#: src/Module/Install.php:253
msgid "Database connection"
msgstr ""
#: src/Module/Install.php:243
#: src/Module/Install.php:254
msgid ""
"In order to install Friendica we need to know how to connect to your "
"database."
msgstr ""
#: src/Module/Install.php:244
#: src/Module/Install.php:255
msgid ""
"Please contact your hosting provider or site administrator if you have "
"questions about these settings."
msgstr ""
#: src/Module/Install.php:245
#: src/Module/Install.php:256
msgid ""
"The database you specify below should already exist. If it does not, please "
"create it before continuing."
msgstr ""
#: src/Module/Install.php:254
#: src/Module/Install.php:265
msgid "Database Server Name"
msgstr ""
#: src/Module/Install.php:259
#: src/Module/Install.php:270
msgid "Database Login Name"
msgstr ""
#: src/Module/Install.php:265
#: src/Module/Install.php:276
msgid "Database Login Password"
msgstr ""
#: src/Module/Install.php:267
#: src/Module/Install.php:278
msgid "For security reasons the password must not be empty"
msgstr ""
#: src/Module/Install.php:270
#: src/Module/Install.php:281
msgid "Database Name"
msgstr ""
#: src/Module/Install.php:274 src/Module/Install.php:304
#: src/Module/Install.php:285 src/Module/Install.php:315
msgid "Please select a default timezone for your website"
msgstr ""
#: src/Module/Install.php:289
#: src/Module/Install.php:300
msgid "Site settings"
msgstr ""
#: src/Module/Install.php:299
#: src/Module/Install.php:310
msgid "Site administrator email address"
msgstr ""
#: src/Module/Install.php:301
#: src/Module/Install.php:312
msgid ""
"Your account email address must match this in order to use the web admin "
"panel."
msgstr ""
#: src/Module/Install.php:308
#: src/Module/Install.php:319
msgid "System Language:"
msgstr ""
#: src/Module/Install.php:310
#: src/Module/Install.php:321
msgid ""
"Set the default language for your Friendica installation interface and to "
"send emails."
msgstr ""
#: src/Module/Install.php:322
#: src/Module/Install.php:333
msgid "Your Friendica site database has been installed."
msgstr ""
#: src/Module/Install.php:332
#: src/Module/Install.php:343
msgid "Installation finished"
msgstr ""
#: src/Module/Install.php:352
#: src/Module/Install.php:363
msgid "<h1>What next</h1>"
msgstr ""
#: src/Module/Install.php:353
#: src/Module/Install.php:364
msgid ""
"IMPORTANT: You will need to [manually] setup a scheduled task for the worker."
msgstr ""
#: src/Module/Install.php:356
#: src/Module/Install.php:367
#, php-format
msgid ""
"Go to your new Friendica node <a href=\"%s/register\">registration page</a> "
@ -10427,7 +10428,7 @@ msgstr ""
msgid "Show fewer"
msgstr ""
#: src/Protocol/Diaspora.php:3414
#: src/Protocol/Diaspora.php:3443
msgid "Attachments:"
msgstr ""