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