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\Hook;
  11 use Friendica\Core\Renderer;
  12 use Friendica\Database\DBA;
  13 use Friendica\DI;
  14 use Friendica\Util\Strings;
  15
  16 function remote_permissions_install() {
  17         Hook::register('lockview_content', 'addon/remote_permissions/remote_permissions.php', 'remote_permissions_content');
  18         Hook::register('addon_settings', 'addon/remote_permissions/remote_permissions.php', 'remote_permissions_settings');
  19         Hook::register('addon_settings_post', 'addon/remote_permissions/remote_permissions.php', 'remote_permissions_settings_post');
  20 }
  21
  22 function remote_permissions_settings(&$a,&$o) {
  23
  24         if(! local_user())
  25                 return;
  26
  27         $global = DI::config()->get("remote_perms", "global");
  28         if($global == 1)
  29                 return;
  30
  31         /* Add our stylesheet to the page so we can make our settings look nice */
  32
  33         DI::page()['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . DI::baseUrl()->get() . '/addon/remote_permissions/settings.css' . '" media="all" />' . "\r\n";
  34
  35         /* Get the current state of our config variable */
  36
  37         $remote_perms = DI::pConfig()->get(local_user(),'remote_perms','show');
  38
  39         /* Add some HTML to the existing form */
  40
  41 //      $t = file_get_contents("addon/remote_permissions/settings.tpl" );
  42         $t = Renderer::getMarkupTemplate("settings.tpl", "addon/remote_permissions/" );
  43         $o .= Renderer::replaceMacros($t, [
  44                 '$remote_perms_title' => DI::l10n()->t('Remote Permissions Settings'),
  45                 '$remote_perms_label' => DI::l10n()->t('Allow recipients of your private posts to see the other recipients of the posts'),
  46                 '$checked' => (($remote_perms == 1) ? 'checked="checked"' : ''),
  47                 '$submit' => DI::l10n()->t('Save Settings')
  48         ]);
  49
  50 }
  51
  52 function remote_permissions_settings_post($a,$post) {
  53         if(! local_user() || empty($_POST['remote-perms-submit']))
  54                 return;
  55
  56         DI::pConfig()->set(local_user(),'remote_perms','show',intval($_POST['remote-perms']));
  57 }
  58
  59 function remote_permissions_content($a, $item_copy) {
  60
  61         if($item_copy['uid'] != local_user())
  62                 return;
  63
  64         if(DI::config()->get('remote_perms','global') == 0) {
  65                 // Admin has set Individual choice. We need to find
  66                 // the original poster. First, get the contact's info
  67                 $r = q("SELECT nick, url FROM contact WHERE id = %d LIMIT 1",
  68                        intval($item_copy['contact-id'])
  69                 );
  70                 if(! $r)
  71                         return;
  72
  73                 // Find out if the contact lives here
  74                 $baseurl = DI::baseUrl()->get();
  75                 $baseurl = substr($baseurl, strpos($baseurl, '://') + 3);
  76                 if(strpos($r[0]['url'], $baseurl) === false)
  77                         return;
  78
  79                 // The contact lives here. Get his/her user info
  80                 $nick = $r[0]['nick'];
  81                 $r = q("SELECT uid FROM user WHERE nickname = '%s' LIMIT 1",
  82                        DBA::escape($nick)
  83                 );
  84                 if(! $r)
  85                         return;
  86
  87                 if(DI::pConfig()->get($r[0]['uid'],'remote_perms','show') == 0)
  88                         return;
  89         }
  90
  91         if(($item_copy['private'] == 1) && (! strlen($item_copy['allow_cid'])) && (! strlen($item_copy['allow_gid']))
  92                 && (! strlen($item_copy['deny_cid'])) && (! strlen($item_copy['deny_gid']))) {
  93
  94                 $allow_names = [];
  95
  96                 // Check for the original post here -- that's the only way
  97                 // to definitely get all of the recipients
  98
  99                 if($item_copy['uri'] === $item_copy['parent-uri']) {
 100                         // Lockview for a top-level post
 101                         $r = q("SELECT allow_cid, allow_gid, deny_cid, deny_gid FROM item WHERE uri = '%s' AND type = 'wall' LIMIT 1",
 102                                    DBA::escape($item_copy['uri'])
 103                         );
 104                 }
 105                 else {
 106                         // Lockview for a comment
 107                         $r = q("SELECT allow_cid, allow_gid, deny_cid, deny_gid FROM item WHERE uri = '%s'
 108                                 AND parent = ( SELECT id FROM item WHERE uri = '%s' AND type = 'wall' ) LIMIT 1",
 109                                    DBA::escape($item_copy['uri']),
 110                                    DBA::escape($item_copy['parent-uri'])
 111                         );
 112                 }
 113                 if($r) {
 114
 115                         $item = $r[0];
 116
 117                         $aclFormatter = DI::aclFormatter();
 118
 119                         $allowed_users = $aclFormatter->expand($item['allow_cid']);
 120                         $allowed_groups = $aclFormatter->expand($item['allow_gid']);
 121                         $deny_users = $aclFormatter->expand($item['deny_cid']);
 122                         $deny_groups = $aclFormatter->expand($item['deny_gid']);
 123
 124                         $o = DI::l10n()->t('Visible to:') . '<br />';
 125                         $allow = [];
 126                         $deny = [];
 127
 128                         if(count($allowed_groups)) {
 129                                 $r = q("SELECT DISTINCT `contact-id` FROM group_member WHERE gid IN ( %s )",
 130                                         DBA::escape(implode(', ', $allowed_groups))
 131                                 );
 132                                 foreach($r as $rr)
 133                                         $allow[] = $rr['contact-id'];
 134                         }
 135                         $allow = array_unique($allow + $allowed_users);
 136
 137                         if(count($deny_groups)) {
 138                                 $r = q("SELECT DISTINCT `contact-id` FROM group_member WHERE gid IN ( %s )",
 139                                         DBA::escape(implode(', ', $deny_groups))
 140                                 );
 141                                 foreach($r as $rr)
 142                                         $deny[] = $rr['contact-id'];
 143                         }
 144                         $deny = $deny + $deny_users;
 145
 146                         if($allow)
 147                         {
 148                                 $r = q("SELECT name FROM contact WHERE id IN ( %s )",
 149                                            DBA::escape(implode(', ', array_diff($allow, $deny)))
 150                                 );
 151                                 foreach($r as $rr)
 152                                         $allow_names[] = $rr['name'];
 153                         }
 154                 }
 155                 else {
 156                         // We don't have the original post. Let's try for the next best thing:
 157                         // checking who else has the post on our own server. Note that comments
 158                         // that were sent to Diaspora and were relayed to others on our server
 159                         // will have different URIs than the original. We can match the GUID for
 160                         // those
 161                         $r = q("SELECT `uid` FROM item WHERE uri = '%s' OR guid = '%s'",
 162                                    DBA::escape($item_copy['uri']),
 163                                DBA::escape($item_copy['guid'])
 164                         );
 165                         if(! $r)
 166                                 return;
 167
 168                         $allow = [];
 169                         foreach($r as $rr)
 170                                 $allow[] = $rr['uid'];
 171
 172                         $r = q("SELECT username FROM user WHERE uid IN ( %s )",
 173                                 DBA::escape(implode(', ', $allow))
 174                         );
 175                         if(! $r)
 176                                 return;
 177
 178                         $o = DI::l10n()->t('Visible to') . ' (' . DI::l10n()->t('may only be a partial list') . '):<br />';
 179
 180                         foreach($r as $rr)
 181                                 $allow_names[] = $rr['username'];
 182                 }
 183
 184                 // Sort the names alphabetically, case-insensitive
 185                 natcasesort($allow_names);
 186                 echo $o . implode(', ', $allow_names);
 187                 exit();
 188         }
 189
 190         return;
 191 }
 192
 193 function remote_permissions_addon_admin(&$a, &$o){
 194         $t = Renderer::getMarkupTemplate( "admin.tpl", "addon/remote_permissions/" );
 195         $o = Renderer::replaceMacros($t, [
 196                 '$submit' => DI::l10n()->t('Save Settings'),
 197                 '$global' => ['remotepermschoice', DI::l10n()->t('Global'), 1, DI::l10n()->t('The posts of every user on this server show the post recipients'),  DI::config()->get('remote_perms', 'global') == 1],
 198                 '$individual' => ['remotepermschoice', DI::l10n()->t('Individual'), 2, DI::l10n()->t('Each user chooses whether his/her posts show the post recipients'),  DI::config()->get('remote_perms', 'global') == 0]
 199         ]);
 200 }
 201
 202 function remote_permissions_addon_admin_post(&$a){
 203         $choice =       (!empty($_POST['remotepermschoice'])            ? Strings::escapeTags(trim($_POST['remotepermschoice']))        : '');
 204         DI::config()->set('remote_perms','global',($choice == 1 ? 1 : 0));
 205 }