remote_permissions/remote_permissions.php

   1 <?php
   2 /**
   3  * Name: Remote Permissions
   4  * Description: Allow the recipients of private posts to see who else can see the post by clicking the lock icon
   5  * Version: 1.0
   6  * Author: Zach <https://f.shmuz.in/profile/techcity>
   7  * Status: Unsupported
   8  */
   9
  10 use Friendica\Core\Config;
  11 use Friendica\Core\Hook;
  12 use Friendica\Core\L10n;
  13 use Friendica\Core\PConfig;
  14 use Friendica\Core\Renderer;
  15 use Friendica\Database\DBA;
  16 use Friendica\DI;
  17 use Friendica\Util\Strings;
  18
  19 function remote_permissions_install() {
  20         Hook::register('lockview_content', 'addon/remote_permissions/remote_permissions.php', 'remote_permissions_content');
  21         Hook::register('addon_settings', 'addon/remote_permissions/remote_permissions.php', 'remote_permissions_settings');
  22         Hook::register('addon_settings_post', 'addon/remote_permissions/remote_permissions.php', 'remote_permissions_settings_post');
  23 }
  24
  25 function remote_permissions_uninstall() {
  26         Hook::unregister('lockview_content', 'addon/remote_permissions/remote_permissions.php', 'remote_permissions_content');
  27         Hook::unregister('addon_settings', 'addon/remote_permissions/remote_permissions.php', 'remote_permissions_settings');
  28         Hook::unregister('addon_settings_post', 'addon/remote_permissions/remote_permissions.php', 'remote_permissions_settings_post');
  29 }
  30
  31 function remote_permissions_settings(&$a,&$o) {
  32
  33         if(! local_user())
  34                 return;
  35
  36         $global = Config::get("remote_perms", "global");
  37         if($global == 1)
  38                 return;
  39
  40         /* Add our stylesheet to the page so we can make our settings look nice */
  41
  42         $a->page['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . DI::baseUrl()->get() . '/addon/remote_permissions/settings.css' . '" media="all" />' . "\r\n";
  43
  44         /* Get the current state of our config variable */
  45
  46         $remote_perms = PConfig::get(local_user(),'remote_perms','show');
  47
  48         /* Add some HTML to the existing form */
  49
  50 //      $t = file_get_contents("addon/remote_permissions/settings.tpl" );
  51         $t = Renderer::getMarkupTemplate("settings.tpl", "addon/remote_permissions/" );
  52         $o .= Renderer::replaceMacros($t, [
  53                 '$remote_perms_title' => L10n::t('Remote Permissions Settings'),
  54                 '$remote_perms_label' => L10n::t('Allow recipients of your private posts to see the other recipients of the posts'),
  55                 '$checked' => (($remote_perms == 1) ? 'checked="checked"' : ''),
  56                 '$submit' => L10n::t('Save Settings')
  57         ]);
  58
  59 }
  60
  61 function remote_permissions_settings_post($a,$post) {
  62         if(! local_user() || empty($_POST['remote-perms-submit']))
  63                 return;
  64
  65         PConfig::set(local_user(),'remote_perms','show',intval($_POST['remote-perms']));
  66         info(L10n::t('Remote Permissions settings updated.') . EOL);
  67 }
  68
  69 function remote_permissions_content($a, $item_copy) {
  70
  71         if($item_copy['uid'] != local_user())
  72                 return;
  73
  74         if(Config::get('remote_perms','global') == 0) {
  75                 // Admin has set Individual choice. We need to find
  76                 // the original poster. First, get the contact's info
  77                 $r = q("SELECT nick, url FROM contact WHERE id = %d LIMIT 1",
  78                        intval($item_copy['contact-id'])
  79                 );
  80                 if(! $r)
  81                         return;
  82
  83                 // Find out if the contact lives here
  84                 $baseurl = DI::baseUrl()->get();
  85                 $baseurl = substr($baseurl, strpos($baseurl, '://') + 3);
  86                 if(strpos($r[0]['url'], $baseurl) === false)
  87                         return;
  88
  89                 // The contact lives here. Get his/her user info
  90                 $nick = $r[0]['nick'];
  91                 $r = q("SELECT uid FROM user WHERE nickname = '%s' LIMIT 1",
  92                        DBA::escape($nick)
  93                 );
  94                 if(! $r)
  95                         return;
  96
  97                 if(PConfig::get($r[0]['uid'],'remote_perms','show') == 0)
  98                         return;
  99         }
 100
 101         if(($item_copy['private'] == 1) && (! strlen($item_copy['allow_cid'])) && (! strlen($item_copy['allow_gid']))
 102                 && (! strlen($item_copy['deny_cid'])) && (! strlen($item_copy['deny_gid']))) {
 103
 104                 $allow_names = [];
 105
 106                 // Check for the original post here -- that's the only way
 107                 // to definitely get all of the recipients
 108
 109                 if($item_copy['uri'] === $item_copy['parent-uri']) {
 110                         // Lockview for a top-level post
 111                         $r = q("SELECT allow_cid, allow_gid, deny_cid, deny_gid FROM item WHERE uri = '%s' AND type = 'wall' LIMIT 1",
 112                                    DBA::escape($item_copy['uri'])
 113                         );
 114                 }
 115                 else {
 116                         // Lockview for a comment
 117                         $r = q("SELECT allow_cid, allow_gid, deny_cid, deny_gid FROM item WHERE uri = '%s'
 118                                 AND parent = ( SELECT id FROM item WHERE uri = '%s' AND type = 'wall' ) LIMIT 1",
 119                                    DBA::escape($item_copy['uri']),
 120                                    DBA::escape($item_copy['parent-uri'])
 121                         );
 122                 }
 123                 if($r) {
 124
 125                         $item = $r[0];
 126
 127                         $aclFormatter = DI::aclFormatter();
 128
 129                         $allowed_users = $aclFormatter->expand($item['allow_cid']);
 130                         $allowed_groups = $aclFormatter->expand($item['allow_gid']);
 131                         $deny_users = $aclFormatter->expand($item['deny_cid']);
 132                         $deny_groups = $aclFormatter->expand($item['deny_gid']);
 133
 134                         $o = L10n::t('Visible to:') . '<br />';
 135                         $allow = [];
 136                         $deny = [];
 137
 138                         if(count($allowed_groups)) {
 139                                 $r = q("SELECT DISTINCT `contact-id` FROM group_member WHERE gid IN ( %s )",
 140                                         DBA::escape(implode(', ', $allowed_groups))
 141                                 );
 142                                 foreach($r as $rr)
 143                                         $allow[] = $rr['contact-id'];
 144                         }
 145                         $allow = array_unique($allow + $allowed_users);
 146
 147                         if(count($deny_groups)) {
 148                                 $r = q("SELECT DISTINCT `contact-id` FROM group_member WHERE gid IN ( %s )",
 149                                         DBA::escape(implode(', ', $deny_groups))
 150                                 );
 151                                 foreach($r as $rr)
 152                                         $deny[] = $rr['contact-id'];
 153                         }
 154                         $deny = $deny + $deny_users;
 155
 156                         if($allow)
 157                         {
 158                                 $r = q("SELECT name FROM contact WHERE id IN ( %s )",
 159                                            DBA::escape(implode(', ', array_diff($allow, $deny)))
 160                                 );
 161                                 foreach($r as $rr)
 162                                         $allow_names[] = $rr['name'];
 163                         }
 164                 }
 165                 else {
 166                         // We don't have the original post. Let's try for the next best thing:
 167                         // checking who else has the post on our own server. Note that comments
 168                         // that were sent to Diaspora and were relayed to others on our server
 169                         // will have different URIs than the original. We can match the GUID for
 170                         // those
 171                         $r = q("SELECT `uid` FROM item WHERE uri = '%s' OR guid = '%s'",
 172                                    DBA::escape($item_copy['uri']),
 173                                DBA::escape($item_copy['guid'])
 174                         );
 175                         if(! $r)
 176                                 return;
 177
 178                         $allow = [];
 179                         foreach($r as $rr)
 180                                 $allow[] = $rr['uid'];
 181
 182                         $r = q("SELECT username FROM user WHERE uid IN ( %s )",
 183                                 DBA::escape(implode(', ', $allow))
 184                         );
 185                         if(! $r)
 186                                 return;
 187
 188                         $o = L10n::t('Visible to') . ' (' . L10n::t('may only be a partial list') . '):<br />';
 189
 190                         foreach($r as $rr)
 191                                 $allow_names[] = $rr['username'];
 192                 }
 193
 194                 // Sort the names alphabetically, case-insensitive
 195                 natcasesort($allow_names);
 196                 echo $o . implode(', ', $allow_names);
 197                 exit();
 198         }
 199
 200         return;
 201 }
 202
 203 function remote_permissions_addon_admin(&$a, &$o){
 204         $t = Renderer::getMarkupTemplate( "admin.tpl", "addon/remote_permissions/" );
 205         $o = Renderer::replaceMacros($t, [
 206                 '$submit' => L10n::t('Save Settings'),
 207                 '$global' => ['remotepermschoice', L10n::t('Global'), 1, L10n::t('The posts of every user on this server show the post recipients'),  Config::get('remote_perms', 'global') == 1],
 208                 '$individual' => ['remotepermschoice', L10n::t('Individual'), 2, L10n::t('Each user chooses whether his/her posts show the post recipients'),  Config::get('remote_perms', 'global') == 0]
 209         ]);
 210 }
 211
 212 function remote_permissions_addon_admin_post(&$a){
 213         $choice =       (!empty($_POST['remotepermschoice'])            ? Strings::escapeTags(trim($_POST['remotepermschoice']))        : '');
 214         Config::set('remote_perms','global',($choice == 1 ? 1 : 0));
 215         info(L10n::t('Settings updated.'). EOL);
 216 }