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