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This commit is contained in:
friendica
2013-03-25 21:32:12 -07:00
parent d0133d6f87
commit 884812bcba
3 changed files with 106 additions and 11 deletions
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48
mod/post.php
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@@ -137,7 +137,7 @@ function post_post(&$a) {
logger('mod_zot: ' . print_r($_REQUEST,true), LOGGER_DEBUG);
$ret = array('result' => false);
$ret = array('success' => false);
$data = json_decode($_REQUEST['data'],true);
@@ -156,6 +156,14 @@ function post_post(&$a) {
if($msgtype === 'pickup') {
/**
* The 'pickup' message arrives with a tracking ID which is associated with a particular outq_hash
* First verify that that the returned signatures verify, then check that we have an outbound queue item
* with the correct hash.
* If everything verifies, find any/all outbound messages in the queue for this hubloc and send them back
*
*/
if((! $data['secret']) || (! $data['secret_sig'])) {
$ret['message'] = 'no verification signature';
logger('mod_zot: pickup: ' . $ret['message'], LOGGER_DEBUG);
@@ -172,7 +180,7 @@ function post_post(&$a) {
}
// verify the url_sig
$sitekey = $r[0]['hubloc_sitekey'];
logger('sitekey: ' . $sitekey);
// logger('sitekey: ' . $sitekey);
if(! rsa_verify($data['callback'],base64url_decode($data['callback_sig']),$sitekey)) {
$ret['message'] = 'possible site forgery';
@@ -186,7 +194,11 @@ function post_post(&$a) {
json_return_and_die($ret);
}
// If we made it to here, we've got a valid pickup. Grab everything for this host and send it.
/**
* If we made it to here, the signatures verify, but we still don't know if the tracking ID is valid.
* It wouldn't be an error if the tracking ID isn't found, because we may have sent this particular
* queue item with another pickup (after the tracking ID for the other pickup was verified).
*/
$r = q("select outq_posturl from outq where outq_hash = '%s' and outq_posturl = '%s' limit 1",
dbesc($data['secret']),
@@ -198,6 +210,11 @@ function post_post(&$a) {
json_return_and_die($ret);
}
/**
* Everything is good if we made it here, so find all messages that are going to this location
* and send them all.
*/
$r = q("select * from outq where outq_posturl = '%s'",
dbesc($data['callback'])
);
@@ -214,16 +231,31 @@ function post_post(&$a) {
}
$encrypted = aes_encapsulate(json_encode($ret),$sitekey);
json_return_and_die($encrypted);
/** pickup: end */
}
/**
* All other message types require us to verify the sender. This is a generic check, so we
* will do it once here and bail if anything goes wrong.
*/
if(array_key_exists('sender',$data)) {
$sender = $data['sender'];
}
/** Check if the sender is already verified here */
$hub = zot_gethub($sender);
if(! $hub) {
/** Have never seen this guid or this guid coming from this location. Check it and register it. */
// (!!) this will validate the sender
$result = zot_register_hub($sender);
if((! $result['success']) || (! zot_gethub($sender))) {
$ret['message'] = 'Hub not available.';
logger('mod_zot: no hub');
@@ -249,14 +281,14 @@ function post_post(&$a) {
}
else {
// basically this means the channel has committed suicide
// Unfriend everybody - basically this means the channel has committed suicide
$arr = $data['sender'];
$sender_hash = base64url_encode(hash('whirlpool',$arr['guid'] . $arr['guid_sig'], true));
require_once('include/Contact.php');
remove_all_xchan_resources($sender_hash);
$ret['result'] = true;
$ret['success'] = true;
json_return_and_die($ret);
}
@@ -296,7 +328,7 @@ function post_post(&$a) {
'hubloc_url' => $sender['url']
),null);
}
$ret['result'] = true;
$ret['success'] = true;
json_return_and_die($ret);
}
@@ -312,7 +344,7 @@ function post_post(&$a) {
$ret['delivery_report'] = $x;
}
$ret['result'] = true;
$ret['success'] = true;
json_return_and_die($ret);
}
@@ -366,7 +398,7 @@ function post_post(&$a) {
);
logger('mod_zot: auth_check: success', LOGGER_DEBUG);
$ret['result'] = true;
$ret['success'] = true;
json_return_and_die($ret);
}