src/Core/ACL.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2022, the Friendica project
   4  *
   5  * @license GNU AGPL version 3 or any later version
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as
   9  * published by the Free Software Foundation, either version 3 of the
  10  * License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  19  *
  20  */
  21
  22 namespace Friendica\Core;
  23
  24 use Friendica\App\Page;
  25 use Friendica\Database\DBA;
  26 use Friendica\DI;
  27 use Friendica\Model\Contact;
  28 use Friendica\Model\Group;
  29 use Friendica\Model\User;
  30
  31 /**
  32  * Handle ACL management and display
  33  */
  34 class ACL
  35 {
  36         /**
  37          * Returns the default lock state for the given user id
  38          * @param int $uid
  39          * @return bool "true" if the default settings are non public
  40          */
  41         public static function getLockstateForUserId(int $uid)
  42         {
  43                 $user = User::getById($uid, ['allow_cid', 'allow_gid', 'deny_cid', 'deny_gid']);
  44                 return !empty($user['allow_cid']) || !empty($user['allow_gid']) || !empty($user['deny_cid']) || !empty($user['deny_gid']);
  45         }
  46
  47         /**
  48          * Returns a select input tag for private message recipient
  49          *
  50          * @param int  $selected Existing recipien contact ID
  51          * @return string
  52          * @throws \Exception
  53          */
  54         public static function getMessageContactSelectHTML(int $selected = null): string
  55         {
  56                 $o = '';
  57
  58                 $page = DI::page();
  59
  60                 $page->registerFooterScript(Theme::getPathForFile('asset/typeahead.js/dist/typeahead.bundle.js'));
  61                 $page->registerFooterScript(Theme::getPathForFile('js/friendica-tagsinput/friendica-tagsinput.js'));
  62                 $page->registerStylesheet(Theme::getPathForFile('js/friendica-tagsinput/friendica-tagsinput.css'));
  63                 $page->registerStylesheet(Theme::getPathForFile('js/friendica-tagsinput/friendica-tagsinput-typeahead.css'));
  64
  65                 $contacts = self::getValidMessageRecipientsForUser(local_user());
  66
  67                 $tpl = Renderer::getMarkupTemplate('acl/message_recipient.tpl');
  68                 $o = Renderer::replaceMacros($tpl, [
  69                         '$contacts' => $contacts,
  70                         '$selected' => $selected,
  71                 ]);
  72
  73                 Hook::callAll(DI::args()->getModuleName() . '_post_recipient', $o);
  74
  75                 return $o;
  76         }
  77
  78         public static function getValidMessageRecipientsForUser(int $uid): array
  79         {
  80                 $condition = [
  81                         'uid'     => $uid,
  82                         'self'    => false,
  83                         'blocked' => false,
  84                         'pending' => false,
  85                         'archive' => false,
  86                         'deleted' => false,
  87                         'rel'     => [Contact::FOLLOWER, Contact::SHARING, Contact::FRIEND],
  88                         'network' => Protocol::SUPPORT_PRIVATE,
  89                 ];
  90
  91                 return Contact::selectToArray(
  92                         ['id', 'name', 'addr', 'micro', 'url', 'nick'],
  93                         DBA::mergeConditions($condition, ["`notify` != ''"])
  94                 );
  95         }
  96
  97         /**
  98          * Returns a minimal ACL block for self-only permissions
  99          *
 100          * @param int    $localUserId
 101          * @param string $explanation
 102          * @return string
 103          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 104          */
 105         public static function getSelfOnlyHTML(int $localUserId, string $explanation)
 106         {
 107                 $selfPublicContactId = Contact::getPublicIdByUserId($localUserId);
 108
 109                 $tpl = Renderer::getMarkupTemplate('acl/self_only.tpl');
 110                 $o = Renderer::replaceMacros($tpl, [
 111                         '$selfPublicContactId' => $selfPublicContactId,
 112                         '$explanation' => $explanation,
 113                 ]);
 114
 115                 return $o;
 116         }
 117
 118         /**
 119          * Return the default permission of the provided user array
 120          *
 121          * @param array $user
 122          * @return array Hash of contact id lists
 123          * @throws \Exception
 124          */
 125         public static function getDefaultUserPermissions(array $user = null)
 126         {
 127                 $aclFormatter = DI::aclFormatter();
 128
 129                 return [
 130                         'allow_cid' => Contact::pruneUnavailable($aclFormatter->expand($user['allow_cid'] ?? '')),
 131                         'allow_gid' => $aclFormatter->expand($user['allow_gid'] ?? ''),
 132                         'deny_cid'  => $aclFormatter->expand($user['deny_cid']  ?? ''),
 133                         'deny_gid'  => $aclFormatter->expand($user['deny_gid']  ?? ''),
 134                 ];
 135         }
 136
 137         /**
 138          * Returns the ACL list of contacts for a given user id
 139          *
 140          * @param int   $user_id
 141          * @param array $condition Additional contact lookup table conditions
 142          * @return array
 143          * @throws \Exception
 144          */
 145         public static function getContactListByUserId(int $user_id, array $condition = [])
 146         {
 147                 $fields = ['id', 'name', 'addr', 'micro'];
 148                 $params = ['order' => ['name']];
 149                 $acl_contacts = Contact::selectToArray(
 150                         $fields,
 151                         array_merge([
 152                                 'uid' => $user_id,
 153                                 'self' => false,
 154                                 'blocked' => false,
 155                                 'archive' => false,
 156                                 'deleted' => false,
 157                                 'pending' => false,
 158                                 'network' => Protocol::FEDERATED,
 159                                 'rel' => [Contact::FOLLOWER, Contact::FRIEND]
 160                         ], $condition),
 161                         $params
 162                 );
 163
 164                 $acl_yourself = Contact::selectFirst($fields, ['uid' => $user_id, 'self' => true]);
 165                 $acl_yourself['name'] = DI::l10n()->t('Yourself');
 166
 167                 $acl_contacts[] = $acl_yourself;
 168
 169                 $acl_forums = Contact::selectToArray($fields,
 170                         ['uid' => $user_id, 'self' => false, 'blocked' => false, 'archive' => false, 'deleted' => false,
 171                         'network' => Protocol::FEDERATED, 'pending' => false, 'contact-type' => Contact::TYPE_COMMUNITY], $params
 172                 );
 173
 174                 $acl_contacts = array_merge($acl_forums, $acl_contacts);
 175
 176                 array_walk($acl_contacts, function (&$value) {
 177                         $value['type'] = 'contact';
 178                 });
 179
 180                 return $acl_contacts;
 181         }
 182
 183         /**
 184          * Returns the ACL list of groups (including meta-groups) for a given user id
 185          *
 186          * @param int $user_id
 187          * @return array
 188          */
 189         public static function getGroupListByUserId(int $user_id)
 190         {
 191                 $acl_groups = [
 192                         [
 193                                 'id' => Group::FOLLOWERS,
 194                                 'name' => DI::l10n()->t('Followers'),
 195                                 'addr' => '',
 196                                 'micro' => 'images/twopeople.png',
 197                                 'type' => 'group',
 198                         ],
 199                         [
 200                                 'id' => Group::MUTUALS,
 201                                 'name' => DI::l10n()->t('Mutuals'),
 202                                 'addr' => '',
 203                                 'micro' => 'images/twopeople.png',
 204                                 'type' => 'group',
 205                         ]
 206                 ];
 207                 foreach (Group::getByUserId($user_id) as $group) {
 208                         $acl_groups[] = [
 209                                 'id' => $group['id'],
 210                                 'name' => $group['name'],
 211                                 'addr' => '',
 212                                 'micro' => 'images/twopeople.png',
 213                                 'type' => 'group',
 214                         ];
 215                 }
 216
 217                 return $acl_groups;
 218         }
 219
 220         /**
 221          * Return the full jot ACL selector HTML
 222          *
 223          * @param Page   $page
 224          * @param int    $uid                   User ID
 225          * @param bool   $for_federation
 226          * @param array  $default_permissions   Static defaults permission array:
 227          *                                      [
 228          *                                      'allow_cid' => [],
 229          *                                      'allow_gid' => [],
 230          *                                      'deny_cid' => [],
 231          *                                      'deny_gid' => []
 232          *                                      ]
 233          * @param array  $condition
 234          * @param string $form_prefix
 235          * @return string
 236          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 237          */
 238         public static function getFullSelectorHTML(
 239                 Page $page,
 240                 int $uid = null,
 241                 bool $for_federation = false,
 242                 array $default_permissions = [],
 243                 array $condition = [],
 244                 $form_prefix = ''
 245         ) {
 246                 if (empty($uid)) {
 247                         return '';
 248                 }
 249
 250                 static $input_group_id = 0;
 251
 252                 $user = User::getById($uid);
 253
 254                 $input_group_id++;
 255
 256                 $page->registerFooterScript(Theme::getPathForFile('asset/typeahead.js/dist/typeahead.bundle.js'));
 257                 $page->registerFooterScript(Theme::getPathForFile('js/friendica-tagsinput/friendica-tagsinput.js'));
 258                 $page->registerStylesheet(Theme::getPathForFile('js/friendica-tagsinput/friendica-tagsinput.css'));
 259                 $page->registerStylesheet(Theme::getPathForFile('js/friendica-tagsinput/friendica-tagsinput-typeahead.css'));
 260
 261                 // Defaults user permissions
 262                 if (empty($default_permissions)) {
 263                         $default_permissions = self::getDefaultUserPermissions($user);
 264                 }
 265
 266                 $default_permissions = [
 267                         'allow_cid' => $default_permissions['allow_cid'] ?? [],
 268                         'allow_gid' => $default_permissions['allow_gid'] ?? [],
 269                         'deny_cid'  => $default_permissions['deny_cid']  ?? [],
 270                         'deny_gid'  => $default_permissions['deny_gid']  ?? [],
 271                 ];
 272
 273                 if (count($default_permissions['allow_cid'])
 274                         + count($default_permissions['allow_gid'])
 275                         + count($default_permissions['deny_cid'])
 276                         + count($default_permissions['deny_gid'])) {
 277                         $visibility = 'custom';
 278                 } else {
 279                         $visibility = 'public';
 280                         // Default permission display for custom panel
 281                         $default_permissions['allow_gid'] = [Group::FOLLOWERS];
 282                 }
 283
 284                 $jotnets_fields = [];
 285                 if ($for_federation) {
 286                         if (function_exists('imap_open') && !DI::config()->get('system', 'imap_disabled')) {
 287                                 $mailacct = DBA::selectFirst('mailacct', ['pubmail'], ['`uid` = ? AND `server` != ""', $user['uid']]);
 288                                 if (DBA::isResult($mailacct)) {
 289                                         $jotnets_fields[] = [
 290                                                 'type' => 'checkbox',
 291                                                 'field' => [
 292                                                         'pubmail_enable',
 293                                                         DI::l10n()->t('Post to Email'),
 294                                                         !empty($mailacct['pubmail'])
 295                                                 ]
 296                                         ];
 297
 298                                 }
 299                         }
 300                         Hook::callAll('jot_networks', $jotnets_fields);
 301                 }
 302
 303                 $acl_contacts = self::getContactListByUserId($user['uid'], $condition);
 304
 305                 $acl_groups = self::getGroupListByUserId($user['uid']);
 306
 307                 $acl_list = array_merge($acl_groups, $acl_contacts);
 308
 309                 $input_names = [
 310                         'visibility'    => $form_prefix ? $form_prefix . '[visibility]'    : 'visibility',
 311                         'group_allow'   => $form_prefix ? $form_prefix . '[group_allow]'   : 'group_allow',
 312                         'contact_allow' => $form_prefix ? $form_prefix . '[contact_allow]' : 'contact_allow',
 313                         'group_deny'    => $form_prefix ? $form_prefix . '[group_deny]'    : 'group_deny',
 314                         'contact_deny'  => $form_prefix ? $form_prefix . '[contact_deny]'  : 'contact_deny',
 315                         'emailcc'       => $form_prefix ? $form_prefix . '[emailcc]'       : 'emailcc',
 316                 ];
 317
 318                 $tpl = Renderer::getMarkupTemplate('acl/full_selector.tpl');
 319                 $o = Renderer::replaceMacros($tpl, [
 320                         '$public_title'   => DI::l10n()->t('Public'),
 321                         '$public_desc'    => DI::l10n()->t('This content will be shown to all your followers and can be seen in the community pages and by anyone with its link.'),
 322                         '$custom_title'   => DI::l10n()->t('Limited/Private'),
 323                         '$custom_desc'    => DI::l10n()->t('This content will be shown only to the people in the first box, to the exception of the people mentioned in the second box. It won\'t appear anywhere public.'),
 324                         '$allow_label'    => DI::l10n()->t('Show to:'),
 325                         '$deny_label'     => DI::l10n()->t('Except to:'),
 326                         '$emailcc'        => DI::l10n()->t('CC: email addresses'),
 327                         '$emtitle'        => DI::l10n()->t('Example: bob@example.com, mary@example.com'),
 328                         '$jotnets_summary' => DI::l10n()->t('Connectors'),
 329                         '$visibility'     => $visibility,
 330                         '$acl_contacts'   => $acl_contacts,
 331                         '$acl_groups'     => $acl_groups,
 332                         '$acl_list'       => $acl_list,
 333                         '$contact_allow'  => implode(',', $default_permissions['allow_cid']),
 334                         '$group_allow'    => implode(',', $default_permissions['allow_gid']),
 335                         '$contact_deny'   => implode(',', $default_permissions['deny_cid']),
 336                         '$group_deny'     => implode(',', $default_permissions['deny_gid']),
 337                         '$for_federation' => $for_federation,
 338                         '$jotnets_fields' => $jotnets_fields,
 339                         '$input_names'    => $input_names,
 340                         '$input_group_id' => $input_group_id,
 341                 ]);
 342
 343                 return $o;
 344         }
 345
 346         /**
 347          * Checks the validity of the given ACL string
 348          *
 349          * @param string $acl_string
 350          * @param int    $uid
 351          * @return bool
 352          * @throws Exception
 353          */
 354         public static function isValidContact($acl_string, $uid)
 355         {
 356                 if (empty($acl_string)) {
 357                         return true;
 358                 }
 359
 360                 // split <x><y><z> into array of cids
 361                 preg_match_all('/<[A-Za-z0-9]+>/', $acl_string, $array);
 362
 363                 // check for each cid if the contact is valid for the given user
 364                 $cid_array = $array[0];
 365                 foreach ($cid_array as $cid) {
 366                         $cid = str_replace(['<', '>'], ['', ''], $cid);
 367                         if (!DBA::exists('contact', ['id' => $cid, 'uid' => $uid])) {
 368                                 return false;
 369                         }
 370                 }
 371
 372                 return true;
 373         }
 374
 375         /**
 376          * Checks the validity of the given ACL string
 377          *
 378          * @param string $acl_string
 379          * @param int    $uid
 380          * @return bool
 381          * @throws Exception
 382          */
 383         public static function isValidGroup($acl_string, $uid)
 384         {
 385                 if (empty($acl_string)) {
 386                         return true;
 387                 }
 388
 389                 // split <x><y><z> into array of cids
 390                 preg_match_all('/<[A-Za-z0-9]+>/', $acl_string, $array);
 391
 392                 // check for each cid if the contact is valid for the given user
 393                 $gid_array = $array[0];
 394                 foreach ($gid_array as $gid) {
 395                         $gid = str_replace(['<', '>'], ['', ''], $gid);
 396                         if (!DBA::exists('group', ['id' => $gid, 'uid' => $uid, 'deleted' => false])) {
 397                                 return false;
 398                         }
 399                 }
 400
 401                 return true;
 402         }
 403 }