mod/dfrn_request.php

   1 <?php
   2
   3 if(! function_exists('dfrn_request_init')) {
   4 function dfrn_request_init(&$a) {
   5
   6         if($_SESSION['authenticated']) {
   7                 // choose which page to show (could be remote auth)
   8
   9         }
  10
  11         if($a->argc > 1)
  12                 $which = $a->argv[1];
  13
  14         require_once('mod/profile.php');
  15         profile_init($a,$which);
  16
  17         return;
  18 }}
  19
  20
  21 if(! function_exists('dfrn_request_post')) {
  22 function dfrn_request_post(&$a) {
  23
  24         if(($a->argc != 2) || (! count($a->profile)))
  25                 return;
  26
  27
  28         if($_POST['cancel']) {
  29                 goaway($a->get_baseurl());
  30         }
  31
  32         // callback to local site after remote request and local confirm
  33
  34         if((x($_POST,'localconfirm')) && ($_POST['localconfirm'] == 1)
  35                 && (x($_SESSION,'authenticated')) && (x($_SESSION,'uid'))
  36                 && ($_SESSION['uid'] == $a->argv[1]) && (x($_POST,'dfrn_url'))) {
  37
  38                 $dfrn_url = notags(trim($_POST['dfrn_url']));
  39                 $aes_allow = (((x($_POST,'aes_allow')) && ($_POST['aes_allow'] == 1)) ? 1 : 0);
  40                 $confirm_key = ((x($_POST,'confirm_key')) ? $_POST['confirm_key'] : "");
  41                 $failed = false;
  42
  43                 require_once('Scrape.php');
  44
  45                 if(x($dfrn_url)) {
  46
  47                         $parms = scrape_dfrn($dfrn_url);
  48
  49                         if(! count($parms)) {
  50                                 $_SESSION['sysmsg'] .= 'URL is not valid or does not contain profile information.' . EOL ;
  51                                 $failed = true;
  52                         }
  53                         else {
  54                                 if(! x($parms,'fn'))
  55                                         $_SESSION['sysmsg'] .= 'Warning: DFRN profile has no identifiable owner name.' . EOL ;
  56                                 if(! x($parms,'photo'))
  57                                         $_SESSION['sysmsg'] .= 'Warning: DFRN profile has no profile photo.' . EOL ;
  58                                 $invalid = validate_dfrn($parms);
  59                                 if($invalid) {
  60                                         echo $invalid . ' required DFRN parameter'
  61                                                 . (($invalid == 1) ? " was " : "s were " )
  62                                                 . "not found at the given URL" . '<br />';
  63
  64                                         $failed = true;
  65                                 }
  66                         }
  67                 }
  68                 if(! $failed) {
  69
  70                         $dfrn_request = $parms['dfrn-request'];
  71                         /////////////////////////
  72                         dbesc_array($parms);
  73                         ////////////////////////
  74
  75                         $r = q("INSERT INTO `contact` ( `uid`, `created`,`url`, `name`, `photo`, `site-pubkey`,
  76                                 `request`, `confirm`, `notify`, `poll`, `aes_allow`)
  77                                 VALUES ( %d, '%s', '%s', '%s' , '%s', '%s', '%s', '%s', '%s', '%s', %d)",
  78                                 intval($_SESSION['uid']),
  79                                 datetime_convert(),
  80                                 dbesc($dfrn_url),
  81                                 $parms['fn'],
  82                                 $parms['photo'],
  83                                 $parms['key'],
  84                                 $parms['dfrn-request'],
  85                                 $parms['dfrn-confirm'],
  86                                 $parms['dfrn-notify'],
  87                                 $parms['dfrn-poll'],
  88                                 intval($aes_allow)
  89                         );
  90                         if($r === false)
  91                                 $_SESSION['sysmsg'] .= "Failed to create contact." . EOL;
  92                         else
  93                                 $_SESSION['sysmsg'] .= "Introduction complete.";
  94
  95                         // Allow the blocked remote notification to complete
  96
  97                         if(strlen($dfrn_request) && strlen($confirm_key))
  98                                 $s = fetch_url($dfrn_request . '?confirm_key=' . $confirm_key);
  99
 100                         goaway($dfrn_url);
 101                 }
 102         }
 103
 104
 105         // we are operating as a remote site and an introduction was requested of us.
 106         // Scrape the originating DFRN-URL for everything we need. Create a contact record
 107         // and an introduction to show our user next time he/she logs in.
 108         // Finally redirect back to the originator so that their site can record the request.
 109         // If our user confirms the request, a record of it will need to exist on the
 110         // originator's site in order for the confirmation process to complete..
 111
 112         if($a->profile['nickname'])
 113                 $tailname = $a->profile['nickname'];
 114         else
 115                 $tailname = $a->profile['uid'];
 116
 117         $uid = $a->profile['uid'];
 118
 119         $failed = false;
 120
 121         require_once('Scrape.php');
 122
 123         if( x($_POST,'dfrn_url')) {
 124
 125                 $url = trim($_POST['dfrn_url']);
 126                 if(x($url)) {
 127                         $parms = scrape_dfrn($url);
 128
 129                         if(! count($parms)) {
 130                                 $_SESSION['sysmsg'] .= 'URL is not valid or does not contain profile information.' . EOL ;
 131                                 $failed = true;
 132                         }
 133                         else {
 134                                 if(! x($parms,'fn'))
 135                                         $_SESSION['sysmsg'] .= 'Warning: DFRN profile has no identifiable owner name.' . EOL ;
 136                                 if(! x($parms,'photo'))
 137                                         $_SESSION['sysmsg'] .= 'Warning: DFRN profile has no profile photo.' . EOL ;
 138                                 $invalid = validate_dfrn($parms);
 139                                 if($invalid) {
 140                                         echo $invalid . ' required DFRN parameter'
 141                                                 . (($invalid == 1) ? " was " : "s were " )
 142                                                 . "not found at the given URL" . '<br />';
 143
 144                                         $failed = true;
 145                                 }
 146                         }
 147                 }
 148
 149                 $ret = q("SELECT `url` FROM `contact` WHERE `url` = '%s'", dbesc($url));
 150                 if($ret !== false && count($ret)) {
 151                         $_SESSION['sysmsg'] .= 'You have already introduced yourself here.' . EOL;
 152                         $failed = true;
 153                 }
 154
 155
 156                 if(! $failed) {
 157
 158                         $parms['url'] = $url;
 159                         $parms['issued-id'] = random_string();
 160
 161                         /////////////////////////
 162                         dbesc_array($parms);
 163                         ////////////////////////
 164
 165                 $ret = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `name`, `issued-id`, `photo`, `site-pubkey`,
 166                         `request`, `confirm`, `notify`, `poll`, `visible` )
 167                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d )",
 168                         intval($uid),
 169                         datetime_convert(),
 170                         $parms['url'],
 171                         $parms['fn'],
 172                         $parms['issued-id'],
 173                         $parms['photo'],
 174                         $parms['key'],
 175                         $parms['dfrn-request'],
 176                         $parms['dfrn-confirm'],
 177                         $parms['dfrn-notify'],
 178                         $parms['dfrn-poll'],
 179                         ((x($_POST,'visible')) ? 1 : 0 )
 180                         );
 181
 182                 }
 183                 if($ret === false) {
 184                         $_SESSION['sysmsg'] .= 'Failed to create contact record.' . EOL;
 185                         return;
 186                 }
 187
 188                 $ret = q("SELECT `id` FROM `contact`
 189                         WHERE `uid` = '%s' AND `url` = '%s' AND `issued-id` = '%s'
 190                         LIMIT 1",
 191                         intval($uid),
 192                         $parms['url'],
 193                         $parms['issued-id']
 194                         );
 195
 196                 if(($ret !== NULL)  && (count($ret)))
 197                         $contact_id = $ret[0]['id'];
 198
 199                 $hash = random_string() . (string) time();   // Generate a confirm_key
 200
 201                 if($contact_id) {
 202                         $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `note`, `hash`, `datetime`)
 203                         VALUES ( %d, %d, 1, %d, '%s', '%s', '%s' )",
 204                         intval($uid),
 205                         intval($contact_id),
 206                         ((x($_POST,'knowyou') && ($_POST['knowyou'] == 1)) ? 1 : 0),
 207                         dbesc(trim($_POST['dfrn-request-message'])),
 208                         dbesc($hash),
 209                         dbesc(datetime_convert())
 210                         );
 211                 }
 212
 213
 214                 // TODO: send an email notification if our user wants one
 215
 216                 if(! $failed)
 217                         $_SESSION['sysmsg'] .= "Your introduction has been sent." . EOL;
 218
 219                 // "Homecoming" - send the requestor back to their site to record the introduction.
 220
 221                 $dfrn_url = bin2hex($a->get_baseurl() . "/profile/$tailname");
 222                 $aes_allow = ((function_exists('openssl_encrypt')) ? 1 : 0);
 223
 224                 goaway($parms['dfrn-request'] . "?dfrn_url=$dfrn_url" . '&confirm_key=' . $hash . (($aes_allow) ? "&aes_allow=1" : ""));
 225
 226         }
 227
 228 }}
 229
 230 if(! function_exists('dfrn_request_content')) {
 231 function dfrn_request_content(&$a) {
 232
 233
 234
 235         if(($a->argc != 2) || (! count($a->profile)))
 236                 return "";
 237
 238         $a->page['template'] = 'profile';
 239
 240         // "Homecoming". Make sure we're logged in to this site as the correct user. Then offer a confirm button
 241         // to send us to the post section to record the introduction.
 242
 243         if(x($_GET,'dfrn_url')) {
 244
 245                 if(! x($_SESSION,'authenticated')) {
 246                         $_SESSION['sysmsg'] .= "Please login to confirm introduction." . EOL;
 247                         return login();
 248                 }
 249
 250                 // Edge case, but can easily happen in the wild. This person is authenticated,
 251                 // but not as the person who needs to deal with this request.
 252
 253                 if (($_SESSION['uid'] != $a->argv[1]) && ($a->user['nickname'] != $a->argv[1])) {
 254                         $_SESSION['sysmsg'] .= "Incorrect identity currently logged in. Please login to <strong>this</strong> profile." . EOL;
 255                         return login();
 256                 }
 257
 258                 $dfrn_url = notags(trim(pack("H*" , $_GET['dfrn_url'])));
 259                 $aes_allow = (((x($_GET,'aes_allow')) && ($_GET['aes_allow'] == 1)) ? 1 : 0);
 260                 $confirm_key = (x($_GET,'confirm_key') ? $_GET['confirm_key'] : "");
 261                 $o .= file_get_contents("view/dfrn_req_confirm.tpl");
 262                 $o  = replace_macros($o,array(
 263                         '$dfrn_url' => $dfrn_url,
 264                         '$aes_allow' => (($aes_allow) ? '<input type="hidden" name="aes_allow" value="1" />' : "" ),
 265                         '$confirm_key' => $confirm_key,
 266                         '$username' => $a->user['username'],
 267                         '$uid' => $_SESSION['uid'],
 268                         'dfrn_rawurl' => $_GET['dfrn_url']
 269                         ));
 270                 return $o;
 271
 272         }
 273         else {
 274                 // safe to send our user their introduction
 275                 if((x($_GET,'confirm_key')) && strlen($_GET['confirm_key'])) {
 276                         $r = q("UPDATE `intro` SET `blocked` = 0 WHERE `hash` = '%s' LIMIT 1",
 277                                 dbesc($_GET['confirm_key'])
 278                         );
 279                         return;
 280                 }
 281
 282
 283         // Outside request. Display our user's introduction form.
 284
 285
 286         $o = file_get_contents("view/dfrn_request.tpl");
 287         $o = replace_macros($o,array('$uid' => $a->profile['uid']));
 288         return $o;
 289         }
 290 }}