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+ GNU AFFERO GENERAL PUBLIC LICENSE
+ Version 3, 19 November 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The GNU Affero General Public License is a free, copyleft license for
+software and other kinds of works, specifically designed to ensure
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+ The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works. By contrast,
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+ When we speak of free software, we are referring to freedom, not
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+ Developers that use our General Public Licenses protect your rights
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+ A secondary benefit of defending all users' freedom is that
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+ An older license, called the Affero General Public License and
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+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+ 17. Interpretation of Sections 15 and 16.
+
+ If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) <year> <name of author>
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Affero General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+ If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source. For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code. There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+ You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<http://www.gnu.org/licenses/>.
diff --git a/mod/vegan/README.org b/mod/vegan/README.org
new file mode 100644
index 000000000..4e4b3740b
--- /dev/null
+++ b/mod/vegan/README.org
@@ -0,0 +1,72 @@
+#+TITLE: Vegan, an anti-spam plugin for Elgg 1.8
+#+AUTHOR: Lorea Hackers
+#+EMAIL: devel@lorea.org
+
+* Lorea Vegan
+** Inspirations
+*** StatusNet
+**** http://spamicity.info/
+**** http://status.net/wiki/Spam
+** Features
+*** Spam-Killing Delegation
+
+ By default only admins can mark accounts as spammers and ban them
+ on the spot. Vegan brings that feature to selected inhabitants.
+
+*** Spammer's Recognition
+
+ Vegan smells spammers:
+ - recent account
+ - no avatar
+ - few friends
+ - empty profile
+ - abusive friend requests
+ - send private messages to non-friends
+ - posts a lot of links
+ - posts known spam
+ - posts from RBL-blacklisted origins
+ - posts a lot in combination of any of the above
+ - defines an "asocial" type that forces user into CAPTCHA mode
+ - more content filtering (URLs, federated spam reports)
+
+*** Conditional Posting
+
+ - requires solving CAPTCHA on first blog post
+ - requires solving CAPTCHA on submission if "asocial"
+ - forces "PRIVATE" posting on reported users
+
+*** Early Warning System
+
+ - sandbox reported users
+ - requires email confirmation on suspicious activity
+
+*** Hive Mind Report
+
+ - any user can flag a spammer. The more flags, and the most dense
+ the reports, the more constraints on the poster.
+ - after a threshold of user reports, spammer is flagged
+ automatically and removed.
+ - user successfully reporting spam get more trust reporting next
+ spammers, hence reinforce the anti-spam recognition system:
+ accordingly, users falsely reporting spam receive less trust,
+ and can be flagged themselves as trolls if they persist in wrong
+ reports.
+ - trolls are treated similarly as spammers, but their account and
+ contents are not destroyed, just suspended.
+
+*** Fight Human Spammers
+
+ As spammers learn to bypass registration processes by keeping that
+ part manual, they can throw in several dormant accounts and use
+ them later.
+
+ - When a spam is successfully reported, the social graph
+ of the spammer is analyzed and contacts are sanctioned (loss of
+ trust.)
+ - When an account is inactive for too long, it is suspended, and
+ requires a manual email reactivation. Remote accounts not
+ mentioning an email require admin intervention for reactivation.
+
+
+
+
diff --git a/mod/vegan/activate.php b/mod/vegan/activate.php
new file mode 100644
index 000000000..3cb9cc40b
--- /dev/null
+++ b/mod/vegan/activate.php
@@ -0,0 +1,9 @@
+/**
+ * vegan -- Activation
+ */
+
+// temp: set default blacklisted email domains (for n-1, YMMV)
+
+$default_bad_domains = 'aol.com,hotmail.com';
+
+elgg_set_plugin_setting('bad_domains', $default_bad_domains, 'vegan');
diff --git a/mod/vegan/manifest.xml b/mod/vegan/manifest.xml
new file mode 100644
index 000000000..e991d8904
--- /dev/null
+++ b/mod/vegan/manifest.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<plugin_manifest xmlns="http://www.elgg.org/plugin_manifest/1.8">
+ <name>Vegan</name>
+ <author>Lorea Faeries</author>
+ <version>0.0.1</version>
+ <category>lorea</category>
+ <category>spam</category>
+ <category>admin</category>
+ <description>Meat is murder, spam is rape.</description>
+ <website>https://lorea.org/plugins/vegan</website>
+ <repository>https://gitorious.org/lorea/vegan</repository>
+ <bugtracker></bugtracker>
+ <donations>https://lorea.org/support</donations>
+ <copyright>2012,2013 Lorea Faeries (federation@lorea.org)</copyright>
+ <license>GNU Affero General Public License version 3 or later</license>
+ <requires>
+ <type>elgg_release</type>
+ <version>1.8</version>
+ </requires>
+ <activate_on_install>true</activate_on_install>
+</plugin_manifest>
diff --git a/mod/vegan/start.php b/mod/vegan/start.php
new file mode 100644
index 000000000..cee529e8f
--- /dev/null
+++ b/mod/vegan/start.php
@@ -0,0 +1,449 @@
+<?php
+/**
+ * Vegan, an anti-spam plugin for Elgg 1.8
+ *
+ * @author hellekin
+ * @package lorea
+ * @subpackage vegan
+ * @copyright 2012,2013 Lorea Faeries <federation@lorea.org>
+ * @license GNU Affero General Public License version 3 or later
+ * @website https://lorea.org/plugins/vegan
+ *
+ * Friendly note to spammers: never cross my path.
+ */
+
+elgg_register_event_handler('init', 'system', 'vegan_init');
+
+/**
+ * vegan_init -- Initialize plugin functionality
+ *
+ * @return void
+ */
+function vegan_init() {
+
+ // Register Tests
+ // elgg_register_plugin_hook_handler('test', 'system', 'vegan_tests');
+
+ // Provide Admin Interface
+ elgg_register_event_handler('pagesetup', 'system', 'vegan_admin_sandbox_page_setup');
+ elgg_extend_view('admin/user_opt/extend', 'vegan/admin_sandboxed_users');
+ elgg_extend_view('css/admin', 'vegan/css_admin');
+
+ // Extend CSS
+ elgg_extend_view('elgg', 'css', 'vegan/css');
+
+ // @todo Replace ReportedContent functionality
+
+ // Hook to registration to block obvious spammers
+ elgg_register_plugin_hook_handler('register', 'user', 'vegan_blacklist_email');
+
+ // Hook to entity creation to restrict access to saved objects
+ elgg_register_event_handler('create', 'group', 'vegan_block_create_group');
+ elgg_register_event_handler('create', 'object', 'vegan_block_create_object');
+
+ // Hook to actions to block spammers from saving objects
+ $actions = array(
+ 'blog/save',
+ 'bookmark/save',
+ 'thewire/add',
+ );
+ foreach ($actions AS $action) {
+ elgg_register_plugin_hook_handler('action', $action, 'vegan_block_action');
+ }
+
+ // Hook to creating,river to prevent river spam
+ elgg_register_plugin_hook_handler('creating', 'river', 'vegan_block_river');
+
+ // @todo clear vegan_sandboxed flag when user joins group/make friends
+ // make it smart enough to make spammers' job hard to circumvent
+
+}
+
+/**
+ * vegan_block_action -- Prevent spammers from saving anything
+ *
+ * @hook Plugin action, *save
+ *
+ * @param String $hook the action to block
+ * @param String $type the entity type (usually object)
+ * @param Mixed $foo ignored parameter
+ * @param Mixed $bar ignored parameter
+ * @return Boolean TRUE if the current user is a recognized spammer, FALSE otherwise.
+ */
+function vegan_block_action($hook, $type, $foo, $bar) {
+
+ $user_guid = elgg_get_logged_in_user_guid();
+
+ return vegan_is_spammer($user_guid);
+
+}
+
+/**
+ * vegan_block_create_group -- Force access to ACCESS_PRIVATE for sandboxed users
+ *
+ * @hook Event create, group
+ *
+ * @param String $event the event (create)
+ * @param String $type the entity type (group)
+ * @param Array $params contains 'entity' key
+ *
+ * @return Boolean TRUE to allow action, FALSE to prevent it
+ */
+function vegan_block_create_group($event, $type, $params) {
+
+ $group = $params['entity'];
+ $guid = $group->owner_guid;
+
+ if ($guid && vegan_is_sandboxed($guid)) {
+ system_message(elgg_echo('vegan:sandboxed:group'));
+ $group->set('access_id', ACCESS_PRIVATE);
+ // Return FALSE to delete group if sandboxed user is a spammer
+ return !vegan_is_spammer($guid);
+ }
+
+ return TRUE; // Accept group creation
+
+}
+
+/**
+ * vegan_block_create_object -- Force access to ACCESS_PRIVATE for sandboxed users.
+ *
+ * @hook Event create, object
+ *
+ * @param String $event the event (create)
+ * @param String $type the entity type (object)
+ * @param Array $params contains 'entity' key
+ *
+ * @return Boolean TRUE to allow action, FALSE to prevent it
+ */
+function vegan_block_create_object($event, $type, $params) {
+
+ $object = $params['entity'];
+ $guid = $object->owner_guid;
+
+ if ($guid && vegan_is_sandboxed($guid)) {
+ system_message(elgg_echo('vegan:sandboxed:object'));
+ $object->set('access_id', ACCESS_PRIVATE);
+ // Return FALSE to delete object if sandboxed user is a spammer
+ return !vegan_is_spammer($guid);
+ }
+
+ return TRUE; // Accept object creation
+
+}
+
+/**
+ * vegan_block_river -- Prevent river spam from sandboxed users
+ *
+ * @hook Plugin creating,river
+ *
+ * @param String $hook the plugin hook (creating)
+ * @param String $type the entity type (river)
+ * @param Mixed $foo ignored parameter
+ * @param Array $values arguments for view
+ *
+ * @return Mixed TRUE to prevent item from being sent to the river, void otherwise.
+ */
+function vegan_block_river($hook, $type, $foo, $values) {
+
+ error_log("===== vegan_block_river $hook,$type ($foo) $values");
+
+ if (vegan_is_sandboxed($values['subject_guid'])) {
+ return TRUE;
+ }
+
+}
+
+/**
+ * vegan_is_sandboxed -- Determine whether to sandbox the user or not
+ *
+ * @param Integer $user_guid the GUID of the user entity to test
+ *
+ * @return Boolean TRUE if sandboxed, FALSE otherwise.
+ */
+function vegan_is_sandboxed($user_guid) {
+
+ $sandboxed = FALSE;
+
+ // Get user and current time
+ $user = get_entity($user_guid);
+ $now = time();
+
+ if (!elgg_instanceof($user, 'user')) {
+ error_log("===== vegan_sandboxed content owner '$user_guid' is not a user!");
+ return FALSE;
+ }
+
+ // Account was activated by email
+ if ($user->validation_method == 'email') {
+
+ $md = elgg_get_metadata(array(
+ 'guid' => $user_guid,
+ 'metadata_name' => 'validated',
+ 'limit' => 1,
+ ));
+ error_log("===== vegan_sandboxed md $md->time_updated");
+
+ // and less than 2 minutes ago: die motherfucker
+ if ($user->last_login == 0 && $md && ($now - $md->time_updated) < 120) {
+ error_log("===== Gotcha! Killing spammer on first post");
+ $user->delete();
+ $sandboxed = TRUE; // return TRUE to block the river
+ }
+ // and less than an hour ago
+ /*
+ else if ($md && ($now - $md->updated_at) < 3600) {
+ error_log("===== vegan_sandboxed recent account");
+ $sandboxed = TRUE;
+ }
+ */
+
+ }
+
+ // If it's sandboxed, force ACCESS_PRIVATE
+ if ($user->vegan_sandboxed) {
+ // Keep track of retries, for future use
+ error_log("===== User is sandboxed ({$owner->vegan_sandboxed_tries})");
+ $user->vegan_sandboxed_tries = (int)$user->vegan_sandboxed_tries + 1;
+ $sandboxed = TRUE;
+ }
+
+ // Skip admins
+ if (!$user->isAdmin()) {
+
+ // You have zero friends
+ if (!$user->getFriends()) {
+ error_log("===== Sandboxed user (no friends)");
+ $sandboxed = TRUE;
+ }
+
+ // You're not cooperating
+ if (!$user->getGroups()) {
+ error_log("===== Sandboxed user (no groups)");
+ $sandboxed = TRUE;
+ }
+
+ }
+
+ if ($sandboxed) {
+ $user->set('vegan_sandboxed', TRUE);
+ // @todo limit access collections to private
+ }
+
+ return $sandboxed;
+
+}
+
+/**
+ * vegan_blacklist_email -- Prevent user registration from a notorious
+ * spam source
+ *
+ * Blacklists suck, but enough is enough.
+ *
+ * @hook Plugin register, user
+ *
+ * @param String $hook the plugin hook (register)
+ * @param String $type the entity type (user)
+ * @param Mixed $value the return value
+ * @param Array $params contains 'user' key
+ *
+ * @return FALSE to prevent user registration
+ */
+function vegan_blacklist_email($hook, $type, $value, $params) {
+
+ // Hardcode forbidden patterns: humans don't use them
+ static $noway = array(
+ '/\+.*@hotmail\.com$/',
+ );
+
+ // Grab the email
+ $email = $params['user']->email;
+ error_log("===== vegan_blacklist_email $hook,$type $email");
+
+ if (!empty($email)) {
+
+ // Exclude forbidden patterns
+ foreach($noway AS $pattern) {
+ if (preg_match($pattern, $email)) {
+ error_log("===== Vegan prevented registration of $email");
+ return FALSE;
+ }
+ }
+
+ // Exclude additional site-specific blacklisted domains
+ $bad_domains = string_to_tag_array(elgg_get_plugin_setting('bad_domains', 'vegan'));
+ $domain = explode('@', $email, 2);
+
+ error_log("===== Vegan testing $email against " . implode(', ', $bad_domains));
+
+ if (is_array($bad_domains) && in_array($domain[1], $bad_domains)) {
+ error_log("===== Vegan prevented registration of $email (bad domain: $domain[1])");
+ return FALSE;
+ }
+
+ }
+
+}
+
+/**
+ * vegan_admin_sandboxed_users -- View and manage suspicious users
+ *
+ */
+
+/**
+ * vegan_admin_sandboxed_page_setup -- Provide admin interface
+ *
+ */
+function vegan_admin_sandboxed_page_setup() {
+ if (elgg_get_context() == 'admin' && elgg_is_admin_logged_in()) {
+ elgg_register_admin_menu_item('administer', 'vegan', 'lorea');
+ }
+}
+
+/*
+function vegan_strike($hook, $type, $value, $params) {
+ $report = $params['report'];
+ $reporter = $report->getOwnerEntity();
+ $current_user_guid = elgg_get_loggedin_user_guid();
+ if ($reporter->guid == $current_user_guid && $reporter->spam_hunter) {
+ // Kill the beast
+ // TODO get reported object owner, or reported user
+ $spammer_guid = -1;
+ $spammer = elgg_get_user_entity($spammer_guid);
+ // Ban
+ if ($spammer->ban()) {
+ system_message(elgg_echo('vegan:killed_spammer'));
+ $report->state = 'archived';
+ $report->save();
+ } else {
+ register_error(elgg_echo('vegan:spammer_escaped'));
+ }
+ }
+
+}
+
+
+function vegan_grant_hunter_role($user_guid) {
+ $user = elgg_get_user($user_guid);
+ if (elgg_instanceof($user, 'user') && !$user->banned) {
+ $user->spam_hunter = true;
+ return TRUE;
+ }
+ return FALSE;
+}
+
+function vegan_can_hunt($user = NULL) {
+ if (!$user) {
+ $user = elgg_get_loggedin_user();
+ }
+ if (!elgg_instanceof($user, 'user') || $user->banned) {
+ return FALSE;
+ }
+
+ return ($user->spam_hunter);
+}
+
+
+*/
+
+/**
+ * Vegan Reporting functions
+ *
+ * Use the `vegan_flag` function, it will sort things out.
+ * `vegan_*_spammer` function are for internal use.
+ */
+/*
+function vegan_flag($stuff) {
+ // Build function name
+ $flag_func = "vegan_";
+
+ // Check who is reporting
+ $reporter = elgg_get_loggedin_user();
+
+ if (!$user) {
+ // Anonymous reporting
+ $vegan_func.= "watch";
+ } else if ($user->spam_hunter || $user->admin) {
+ // Direct kill
+ $vegan_func = "ban";
+ } else {
+ // Report by authenticated user
+ $vegan_func = "block";
+ }
+ $vegan_func.= "_spammer";
+
+ // Check what is reported
+ if ($stuff instanceof ElggUser) {
+ // A user
+ } else if (is_numeric($stuff)) {
+ // A GUID
+ $stuff = get_entity($stuff);
+ } else if (preg_match($stuff, "/^https?:\/\/[^\/]+/(?:pg\/)profile\/([^\/\?\b]+)/", $stuff, $m)) {
+ $stuff = get_user_by_username($m[2]);
+ }
+
+ if ($stuff instanceof ElggUser) {
+ $spammer_guid = $stuff->getGUID();
+ } else if ($stuff instanceof ElggEntity) {
+ $spammer_guid = $stuff->getOwnerGUID();
+ } else {
+ elgg_register_error(elgg_echo('vegan:error:invalid_reference'));
+ return FALSE;
+ }
+
+ return $vegan_func($spammer_guid);
+}
+
+
+// Report a spammer anonymously
+// will raise the vegan_watch count for that entity
+function vegan_snitch_spammer($user) {
+ $user->vegan_watch = (int)$user->vegan_watch + 1;
+ // notify...
+ system_message(elgg_echo('vegan:action:success'));
+ return TRUE;
+}
+
+// Block a spammer
+// Reporter won't see it anymore
+function vegan_block_spammer($user) {
+ $reporter_guid = get_loggedin_user_guid();
+ // Watch it
+ $user->vegan_watch = (int)$user->vegan_watch + 1;
+ // Block it
+ elgg_create_entity_relationship($reporter_guid, $user->guid, "blocked");
+ // Notify...
+ system_message(elgg_echo('vegan:action:success'));
+ return TRUE;
+}
+
+// Ban a spammer
+function vegan_ban_spammer($user) {
+ $reporter_guid = elgg_get_loggedin_user_guid();
+ // Ban it
+ $user->ban("spammer");
+ // Notify
+ system_message(elgg_echo('vegan:action:success'));
+ return TRUE;
+}
+
+*/
+
+/**
+ * vegan_spammer -- Determine whether a user is a spammer
+ *
+ * @param Integer $user_guid GUID of the user entity to test
+ *
+ * @return Boolean TRUE is user is a recognized spammer, FALSE otherwise.
+ */
+function vegan_is_spammer($user_guid) {
+
+ $user = get_entity($user_guid);
+
+ if (elgg_instanceof($user, 'user') && !$user->isBanned()) {
+ return (bool)$user->spammer;
+ }
+
+ return FALSE;
+
+}
diff --git a/mod/vegan/views/default/plugins/vegan/settings.php b/mod/vegan/views/default/plugins/vegan/settings.php
new file mode 100644
index 000000000..22805e2a2
--- /dev/null
+++ b/mod/vegan/views/default/plugins/vegan/settings.php
@@ -0,0 +1,16 @@
+<?php
+/**
+ * Vegan -- Plugin settings view
+ *
+ */
+
+$title = elgg_echo('vegan:settings:title');
+
+$options = array(
+ 'name' => 'params[bad_domains]',
+ 'value' => $vars['entity']->bad_domains,
+);
+
+$input = elgg_view('input/text', $options);
+
+echo "<p><label for=\"params[bad_domains]\">$title</label>$input</p>";
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-17 04:50:49 +0000