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-rw-r--r--mod/dfrn_notify.php74
1 files changed, 63 insertions, 11 deletions
diff --git a/mod/dfrn_notify.php b/mod/dfrn_notify.php
index a1a6ab716..b1a330e8c 100644
--- a/mod/dfrn_notify.php
+++ b/mod/dfrn_notify.php
@@ -9,6 +9,13 @@ function dfrn_notify_post(&$a) {
$dfrn_id = notags(trim($_POST['dfrn_id']));
$challenge = notags(trim($_POST['challenge']));
$data = $_POST['data'];
+
+ $direction = (-1);
+ if(strpos($dfrn_id,':') == 1) {
+ $direction = intval(substr($dfrn_id,0,1));
+ $dfrn_id = substr($dfrn_id,2);
+ }
+
$r = q("SELECT * FROM `challenge` WHERE `dfrn-id` = '%s' AND `challenge` = '%s' LIMIT 1",
dbesc($dfrn_id),
dbesc($challenge)
@@ -23,11 +30,26 @@ function dfrn_notify_post(&$a) {
// find the local user who owns this relationship.
+ $sql_extra = '';
+ switch($direction) {
+ case (-1):
+ $sql_extra = sprintf(" AND `issued-id` = '%s' ", dbesc($dfrn_id));
+ break;
+ case 0:
+ $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
+ break;
+ case 1:
+ $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
+ break;
+ default:
+ xml_status(3);
+ break; // NOTREACHED
+ }
+
+
$r = q("SELECT `contact`.*, `contact`.`uid` AS `importer_uid`, `user`.* FROM `contact`
LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
- WHERE ( `issued-id` = '%s' OR ( `duplex` = 1 AND `dfrn-id` = '%s' )) LIMIT 1",
- dbesc($dfrn_id),
- dbesc($dfrn_id)
+ WHERE `contact`.`blocked` = 0 AND `contact`.`pending` = 0 $sql_extra LIMIT 1"
);
if(! count($r)) {
@@ -336,7 +358,18 @@ function dfrn_notify_post(&$a) {
function dfrn_notify_content(&$a) {
if(x($_GET,'dfrn_id')) {
- // initial communication from external contact
+
+ // initial communication from external contact, $direction is their direction.
+ // If this is a duplex communication, ours will be the opposite.
+
+ $dfrn_id = notags(trim($_GET['dfrn_id']));
+
+ $direction = (-1);
+ if(strpos($dfrn_id,':') == 1) {
+ $direction = intval(substr($dfrn_id,0,1));
+ $dfrn_id = substr($dfrn_id,2);
+ }
+
$hash = random_string();
$status = 0;
@@ -346,21 +379,40 @@ function dfrn_notify_content(&$a) {
$r = q("INSERT INTO `challenge` ( `challenge`, `dfrn-id`, `expire` )
VALUES( '%s', '%s', '%s') ",
dbesc($hash),
- dbesc(notags(trim($_GET['dfrn_id']))),
+ dbesc($dfrn_id),
intval(time() + 60 )
);
- $r = q("SELECT * FROM `contact` WHERE ( `issued-id` = '%s' OR ( `duplex` = 1 AND `dfrn-id` = '%s'))
- AND `blocked` = 0 AND `pending` = 0 LIMIT 1",
- dbesc($_GET['dfrn_id']),
- dbesc($_GET['dfrn_id'])
- );
+
+ $sql_extra = '';
+ switch($direction) {
+ case (-1):
+ $sql_extra = sprintf(" AND `issued-id` = '%s' ", dbesc($dfrn_id));
+ $my_id = $dfrn_id;
+ break;
+ case 0:
+ $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
+ $my_id = '1:' . $dfrn_id;
+ break;
+ case 1:
+ $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
+ $my_id = '0:' . $dfrn_id;
+ break;
+ default:
+ $status = 1;
+ break; // NOTREACHED
+ }
+
+
+
+ $r = q("SELECT * FROM `contact` WHERE `blocked` = 0 AND `pending` = 0 $sql_extra LIMIT 1");
+
if(! count($r))
$status = 1;
$challenge = '';
$encrypted_id = '';
- $id_str = $_GET['dfrn_id'] . '.' . mt_rand(1000,9999);
+ $id_str = $my_id . '.' . mt_rand(1000,9999);
if(($r[0]['duplex']) && strlen($r[0]['pubkey'])) {
openssl_public_encrypt($hash,$challenge,$r[0]['pubkey']);