Merge pull request #231 from pfefferle/security_privacy

Security & privacy related fixes
This commit is contained in:
Matthias Pfefferle 2023-01-12 16:36:41 +01:00 committed by GitHub
commit 7d71ac07e1
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GPG key ID: 4AEE18F83AFDEB23
15 changed files with 195 additions and 20 deletions

27
Dockerfile Normal file
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@ -0,0 +1,27 @@
FROM php:7.4-alpine3.13
RUN mkdir /app
WORKDIR /app
# Install Git, NPM & needed libraries
RUN apk update \
&& apk add bash git nodejs npm gettext subversion mysql mysql-client zip \
&& rm -f /var/cache/apk/*
RUN docker-php-ext-install mysqli
# Install Composer
RUN EXPECTED_CHECKSUM=$(curl -s https://composer.github.io/installer.sig) \
&& curl https://getcomposer.org/installer -o composer-setup.php \
&& ACTUAL_CHECKSUM="$(php -r "echo hash_file('sha384', 'composer-setup.php');")" \
&& if [ "$EXPECTED_CHECKSUM" != "$ACTUAL_CHECKSUM" ]; then >&2 echo 'ERROR: Invalid installer checksum'; rm composer-setup.php; exit 1; fi \
&& php composer-setup.php --quiet \
&& php -r "unlink('composer-setup.php');" \
&& mv composer.phar /usr/local/bin/composer
RUN curl -O https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli.phar && \
chmod +x wp-cli.phar && \
mv wp-cli.phar /usr/local/bin/wp
RUN chmod +x -R ./

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@ -4,7 +4,7 @@
**Tags:** OStatus, fediverse, activitypub, activitystream **Tags:** OStatus, fediverse, activitypub, activitystream
**Requires at least:** 4.7 **Requires at least:** 4.7
**Tested up to:** 6.1 **Tested up to:** 6.1
**Stable tag:** 0.14.3 **Stable tag:** 0.15.0
**Requires PHP:** 5.6 **Requires PHP:** 5.6
**License:** MIT **License:** MIT
**License URI:** http://opensource.org/licenses/MIT **License URI:** http://opensource.org/licenses/MIT
@ -88,6 +88,12 @@ Where 'blog' is the path to the subdirectory at which your blog resides.
Project maintained on GitHub at [pfefferle/wordpress-activitypub](https://github.com/pfefferle/wordpress-activitypub). Project maintained on GitHub at [pfefferle/wordpress-activitypub](https://github.com/pfefferle/wordpress-activitypub).
### 0.15.0 ###
* Enable ActivityPub only for users that can `publish_posts`
* Persist only public Activities
* Fix remote-delete
### 0.14.3 ### ### 0.14.3 ###
* Better error handling. props [@akirk](https://github.com/akirk) * Better error handling. props [@akirk](https://github.com/akirk)

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@ -3,7 +3,7 @@
* Plugin Name: ActivityPub * Plugin Name: ActivityPub
* Plugin URI: https://github.com/pfefferle/wordpress-activitypub/ * Plugin URI: https://github.com/pfefferle/wordpress-activitypub/
* Description: The ActivityPub protocol is a decentralized social networking protocol based upon the ActivityStreams 2.0 data format. * Description: The ActivityPub protocol is a decentralized social networking protocol based upon the ActivityStreams 2.0 data format.
* Version: 0.14.3 * Version: 0.15.0
* Author: Matthias Pfefferle * Author: Matthias Pfefferle
* Author URI: https://notiz.blog/ * Author URI: https://notiz.blog/
* License: MIT * License: MIT

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@ -34,7 +34,7 @@
"scripts": { "scripts": {
"test": [ "test": [
"composer install", "composer install",
"bin/install-wp-tests.sh wordpress wordpress wordpress", "bin/install-wp-tests.sh activitypub-test root activitypub-test test-db latest true",
"vendor/bin/phpunit" "vendor/bin/phpunit"
] ]
} }

17
docker-compose-test.yml Normal file
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@ -0,0 +1,17 @@
version: '2'
services:
test-db:
image: mysql:5.7
environment:
MYSQL_DATABASE: activitypub-test
MYSQL_ROOT_PASSWORD: activitypub-test
test-php:
build:
context: .
dockerfile: Dockerfile
links:
- test-db
volumes:
- .:/app
command: ["composer", "run-script", "test"]

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@ -24,6 +24,8 @@ class Activitypub {
} }
\add_action( 'transition_post_status', array( '\Activitypub\Activitypub', 'schedule_post_activity' ), 10, 3 ); \add_action( 'transition_post_status', array( '\Activitypub\Activitypub', 'schedule_post_activity' ), 10, 3 );
\add_action( 'wp_trash_post', array( '\Activitypub\Activitypub', 'trash_post' ), 1 );
\add_action( 'untrash_post', array( '\Activitypub\Activitypub', 'untrash_post' ), 1 );
} }
/** /**
@ -38,6 +40,11 @@ class Activitypub {
return $template; return $template;
} }
// check if user can publish posts
if ( \is_author() && ! user_can( \get_the_author_meta( 'ID' ), 'publish_posts' ) ) {
return $template;
}
if ( \is_author() ) { if ( \is_author() ) {
$json_template = \dirname( __FILE__ ) . '/../templates/author-json.php'; $json_template = \dirname( __FILE__ ) . '/../templates/author-json.php';
} elseif ( \is_singular() ) { } elseif ( \is_singular() ) {
@ -180,4 +187,26 @@ class Activitypub {
} }
return \get_comment_meta( $comment->comment_ID, 'avatar_url', true ); return \get_comment_meta( $comment->comment_ID, 'avatar_url', true );
} }
/**
* Store permalink in meta, to send delete Activity
*
* @param string $post_id The Post ID
*
* @return void
*/
public static function trash_post( $post_id ) {
\add_post_meta( $post_id, 'activitypub_canonical_url', \get_permalink( $post_id ), true );
}
/**
* Delete permalink from meta
*
* @param string $post_id The Post ID
*
* @return void
*/
public static function untrash_post( $post_id ) {
\delete_post_meta( $post_id, 'activitypub_canonical_url' );
}
} }

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@ -68,11 +68,15 @@ class Post {
} }
public function generate_id() { public function generate_id() {
$post = $this->post; $post = $this->post;
$permalink = \get_permalink( $post );
// replace 'trashed' for delete activity if ( 'trash' === get_post_status( $post ) ) {
return \str_replace( '__trashed', '', $permalink ); $permalink = \get_post_meta( $post->ID, 'activitypub_canonical_url', true );
} else {
$permalink = \get_permalink( $post );
}
return $permalink;
} }
public function generate_attachments() { public function generate_attachments() {

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@ -101,6 +101,9 @@ class Followers {
$params['user_id'] = array( $params['user_id'] = array(
'required' => true, 'required' => true,
'type' => 'integer', 'type' => 'integer',
'validate_callback' => function( $param, $request, $key ) {
return user_can( $param, 'publish_posts' );
},
); );
return $params; return $params;

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@ -99,6 +99,9 @@ class Following {
$params['user_id'] = array( $params['user_id'] = array(
'required' => true, 'required' => true,
'type' => 'integer', 'type' => 'integer',
'validate_callback' => function( $param, $request, $key ) {
return user_can( $param, 'publish_posts' );
},
); );
return $params; return $params;

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@ -33,7 +33,7 @@ class Inbox {
array( array(
'methods' => \WP_REST_Server::EDITABLE, 'methods' => \WP_REST_Server::EDITABLE,
'callback' => array( '\Activitypub\Rest\Inbox', 'shared_inbox_post' ), 'callback' => array( '\Activitypub\Rest\Inbox', 'shared_inbox_post' ),
'args' => self::shared_inbox_request_parameters(), 'args' => self::shared_inbox_post_parameters(),
'permission_callback' => '__return_true', 'permission_callback' => '__return_true',
), ),
) )
@ -46,12 +46,13 @@ class Inbox {
array( array(
'methods' => \WP_REST_Server::EDITABLE, 'methods' => \WP_REST_Server::EDITABLE,
'callback' => array( '\Activitypub\Rest\Inbox', 'user_inbox_post' ), 'callback' => array( '\Activitypub\Rest\Inbox', 'user_inbox_post' ),
'args' => self::user_inbox_request_parameters(), 'args' => self::user_inbox_post_parameters(),
'permission_callback' => '__return_true', 'permission_callback' => '__return_true',
), ),
array( array(
'methods' => \WP_REST_Server::READABLE, 'methods' => \WP_REST_Server::READABLE,
'callback' => array( '\Activitypub\Rest\Inbox', 'user_inbox_get' ), 'callback' => array( '\Activitypub\Rest\Inbox', 'user_inbox_get' ),
'args' => self::user_inbox_get_parameters(),
'permission_callback' => '__return_true', 'permission_callback' => '__return_true',
), ),
) )
@ -195,7 +196,7 @@ class Inbox {
* *
* @return array list of parameters * @return array list of parameters
*/ */
public static function user_inbox_request_parameters() { public static function user_inbox_get_parameters() {
$params = array(); $params = array();
$params['page'] = array( $params['page'] = array(
@ -205,6 +206,32 @@ class Inbox {
$params['user_id'] = array( $params['user_id'] = array(
'required' => true, 'required' => true,
'type' => 'integer', 'type' => 'integer',
'validate_callback' => function( $param, $request, $key ) {
return user_can( $param, 'publish_posts' );
},
);
return $params;
}
/**
* The supported parameters
*
* @return array list of parameters
*/
public static function user_inbox_post_parameters() {
$params = array();
$params['page'] = array(
'type' => 'integer',
);
$params['user_id'] = array(
'required' => true,
'type' => 'integer',
'validate_callback' => function( $param, $request, $key ) {
return user_can( $param, 'publish_posts' );
},
); );
$params['id'] = array( $params['id'] = array(
@ -243,7 +270,7 @@ class Inbox {
* *
* @return array list of parameters * @return array list of parameters
*/ */
public static function shared_inbox_request_parameters() { public static function shared_inbox_post_parameters() {
$params = array(); $params = array();
$params['page'] = array( $params['page'] = array(
@ -410,6 +437,12 @@ class Inbox {
return; return;
} }
// check if Activity is public or not
if ( ! self::is_activity_public( $object ) ) {
// @todo maybe send email
return;
}
$comment_post_id = \url_to_postid( $object['object']['inReplyTo'] ); $comment_post_id = \url_to_postid( $object['object']['inReplyTo'] );
// save only replys and reactions // save only replys and reactions
@ -446,21 +479,53 @@ class Inbox {
\add_action( 'check_comment_flood', 'check_comment_flood_db', 10, 4 ); \add_action( 'check_comment_flood', 'check_comment_flood_db', 10, 4 );
} }
/**
* Extract recipient URLs from Activity object
*
* @param array $data
*
* @return array The list of user URLs
*/
public static function extract_recipients( $data ) { public static function extract_recipients( $data ) {
$recipients = array(); $recipient_items = array();
$users = array();
foreach ( array( 'to', 'bto', 'cc', 'bcc', 'audience' ) as $i ) { foreach ( array( 'to', 'bto', 'cc', 'bcc', 'audience' ) as $i ) {
if ( array_key_exists( $i, $data ) ) { if ( array_key_exists( $i, $data ) ) {
$recipients = array_merge( $recipients, $data[ $i ] ); $recipient_items = array_merge( $recipient_items, $data[ $i ] );
} }
if ( array_key_exists( $i, $data['object'] ) ) { if ( array_key_exists( $i, $data['object'] ) ) {
$recipients = array_merge( $recipients, $data[ $i ] ); $recipient_items = array_merge( $recipient_items, $data[ $i ] );
} }
} }
$recipients = array_unique( $recipients ); $recipients = array();
// flatten array
foreach ( $recipient_items as $recipient ) {
if ( is_array( $recipient ) ) {
// check if recipient is an object
if ( array_key_exists( 'id', $recipient ) ) {
$recipients[] = $recipient['id'];
}
} else {
$recipients[] = $recipient;
}
}
return array_unique( $recipients );
}
/**
* Get local user recipients
*
* @param array $data
*
* @return array The list of local users
*/
public static function get_recipients( $data ) {
$recipients = self::extract_recipients( $data );
$users = array();
foreach ( $recipients as $recipient ) { foreach ( $recipients as $recipient ) {
$user_id = \Activitypub\url_to_authorid( $recipient ); $user_id = \Activitypub\url_to_authorid( $recipient );
@ -474,4 +539,16 @@ class Inbox {
return $users; return $users;
} }
/**
* Check if passed Activity is Public
*
* @param array $data
* @return boolean
*/
public static function is_activity_public( $data ) {
$recipients = self::extract_recipients( $data );
return in_array( 'https://www.w3.org/ns/activitystreams#Public', $recipients, true );
}
} }

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@ -138,6 +138,9 @@ class Outbox {
$params['user_id'] = array( $params['user_id'] = array(
'required' => true, 'required' => true,
'type' => 'integer', 'type' => 'integer',
'validate_callback' => function( $param, $request, $key ) {
return user_can( $param, 'publish_posts' );
},
); );
return $params; return $params;

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@ -59,7 +59,7 @@ class Webfinger {
$user = \get_user_by( 'login', \esc_sql( $resource_identifier ) ); $user = \get_user_by( 'login', \esc_sql( $resource_identifier ) );
if ( ! $user ) { if ( ! $user || ! user_can( $user, 'publish_posts' ) ) {
return new \WP_Error( 'activitypub_user_not_found', \__( 'User not found', 'activitypub' ), array( 'status' => 404 ) ); return new \WP_Error( 'activitypub_user_not_found', \__( 'User not found', 'activitypub' ), array( 'status' => 404 ) );
} }

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@ -7,7 +7,7 @@
convertWarningsToExceptions="true" convertWarningsToExceptions="true"
> >
<testsuites> <testsuites>
<testsuite> <testsuite name="ActivityPub">
<directory prefix="test-" suffix=".php">./tests/</directory> <directory prefix="test-" suffix=".php">./tests/</directory>
</testsuite> </testsuite>
</testsuites> </testsuites>

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@ -4,7 +4,7 @@ Donate link: https://notiz.blog/donate/
Tags: OStatus, fediverse, activitypub, activitystream Tags: OStatus, fediverse, activitypub, activitystream
Requires at least: 4.7 Requires at least: 4.7
Tested up to: 6.1 Tested up to: 6.1
Stable tag: 0.14.3 Stable tag: 0.15.0
Requires PHP: 5.6 Requires PHP: 5.6
License: MIT License: MIT
License URI: http://opensource.org/licenses/MIT License URI: http://opensource.org/licenses/MIT
@ -88,6 +88,12 @@ Where 'blog' is the path to the subdirectory at which your blog resides.
Project maintained on GitHub at [pfefferle/wordpress-activitypub](https://github.com/pfefferle/wordpress-activitypub). Project maintained on GitHub at [pfefferle/wordpress-activitypub](https://github.com/pfefferle/wordpress-activitypub).
= 0.15.0 =
* Enable ActivityPub only for users that can `publish_posts`
* Persist only public Activities
* Fix remote-delete
= 0.14.3 = = 0.14.3 =
* Better error handling. props [@akirk](https://github.com/akirk) * Better error handling. props [@akirk](https://github.com/akirk)

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@ -38,7 +38,7 @@ $json->manuallyApprovesFollowers = \apply_filters( 'activitypub_json_manually_ap
$json->publicKey = array( $json->publicKey = array(
'id' => \get_home_url( '/' ) . '#main-key', 'id' => \get_home_url( '/' ) . '#main-key',
'owner' => \get_home_url( '/' ), 'owner' => \get_home_url( '/' ),
'publicKeyPem' => \trim(), 'publicKeyPem' => '',
); );
$json->tag = array(); $json->tag = array();