Merge branch 'dev'

1 files changed, 5 insertions, 469 deletions

diff --git a/mod/post.php b/mod/post.php
index 4c52de44a..6885b0d69 100644
--- a/mod/post.php
+++ b/mod/post.php
@@ -481,480 +481,16 @@ function post_init(&$a) {
  *
  * @param[in,out] App &$a
  */
-function post_post(&$a) {
-
-	$encrypted_packet = false;
-	$ret = array('success' => false);
-
-	$data = json_decode($_REQUEST['data'],true);
-
-	/*
-	 * Many message packets will arrive encrypted. The existence of an 'iv'
-	 * element tells us we need to unencapsulate the AES-256-CBC content using
-	 * the site private key.
-	 */
-
-	if($data && array_key_exists('iv',$data)) {
-		$encrypted_packet = true;
-		$data = crypto_unencapsulate($data,get_config('system','prvkey'));
-		logger('mod_zot: decrypt1: ' . $data, LOGGER_DATA);
-		$data = json_decode($data,true);
-	}
-
-	if(! $data) {
-
-		// possible Bleichenbacher's attack, just treat it as a 
-		// message we have no handler for. It should fail a bit 
-		// further along with "no hub". Our public key is public
-		// knowledge. There's no reason why anybody should get the 
-		// encryption wrong unless they're fishing or hacking. If 
-		// they're developing and made a goof, this can be discovered 
-		// in the logs of the destination site. If they're fishing or 
-		// hacking, the bottom line is we can't verify their hub. 
-		// That's all we're going to tell them.
-
-		$data = array('type' => 'bogus');
-	}
-
-
-	$msgtype = ((array_key_exists('type',$data)) ? $data['type'] : '');
-
-	if($msgtype === 'ping') {
-
-		// Useful to get a health check on a remote site.
-		// This will let us know if any important communication details
-		// that we may have stored are no longer valid, regardless of xchan details.
-		logger('POST: got ping send pong now back: ' . z_root() , LOGGER_DEBUG );
- 
-		$ret['success'] = true;
-		$ret['site'] = array();
-		$ret['site']['url'] = z_root();
-		$ret['site']['url_sig'] = base64url_encode(rsa_sign(z_root(),get_config('system','prvkey')));
-		$ret['site']['sitekey'] = get_config('system','pubkey');
-		json_return_and_die($ret);
-	}
-
-
-	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: ' . $ret['message'], LOGGER_DEBUG);
-			json_return_and_die($ret);
-		}
-		$r = q("select distinct hubloc_sitekey from hubloc where hubloc_url = '%s' and hubloc_callback = '%s' and hubloc_sitekey != '' group by hubloc_sitekey ",
-			dbesc($data['url']),
-			dbesc($data['callback'])
-		);
-		if(! $r) {
-			$ret['message'] = 'site not found';
-			logger('mod_zot: pickup: ' . $ret['message']);
-			json_return_and_die($ret);
-		}
-
-		foreach ($r as $hubsite) {
-
-			// verify the url_sig
-			// If the server was re-installed at some point, there could be multiple hubs with the same url and callback.
-			// Only one will have a valid key.
-
-			$forgery = true;
-			$secret_fail = true;
-
-			$sitekey = $hubsite['hubloc_sitekey'];
-
-			logger('mod_zot: Checking sitekey: ' . $sitekey, LOGGER_DATA);
-
-			if(rsa_verify($data['callback'],base64url_decode($data['callback_sig']),$sitekey)) {
-				$forgery = false;
-			}
-			if(rsa_verify($data['secret'],base64url_decode($data['secret_sig']),$sitekey)) {
-				$secret_fail = false;
-			}
-			if((! $forgery) && (! $secret_fail))
-				break;
-		}
-
-		if($forgery) {
-			$ret['message'] = 'possible site forgery';
-			logger('mod_zot: pickup: ' . $ret['message']);
-			json_return_and_die($ret);
-		}
-
-		if($secret_fail) {
-			$ret['message'] = 'secret validation failed';
-			logger('mod_zot: pickup: ' . $ret['message']);
-			json_return_and_die($ret);
-		}
-
-		/*
-		 * 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']),
-			dbesc($data['callback'])
-		);
-		if(! $r) {
-			$ret['message'] = 'nothing to pick up';
-			logger('mod_zot: pickup: ' . $ret['message']);
-			json_return_and_die($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'])
-		);
-		if($r) {
-			logger('mod_zot: successful pickup message received from ' . $data['callback'] . ' ' . count($r) . ' message(s) picked up', LOGGER_DEBUG);
-
-			$ret['success'] = true;
-			$ret['pickup'] = array();
-			foreach($r as $rr) {
-				if($rr['outq_msg']) {
-					$x = json_decode($rr['outq_msg'],true);
-
-					if(! $x)
-						continue;
-
-					if(array_key_exists('message_list',$x)) {
-						foreach($x['message_list'] as $xx) {
-							$ret['pickup'][] = array('notify' => json_decode($rr['outq_notify'],true),'message' => $xx);
-						}
-					}
-					else
-						$ret['pickup'][] = array('notify' => json_decode($rr['outq_notify'],true),'message' => $x);
-
-					$x = q("delete from outq where outq_hash = '%s'",
-						dbesc($rr['outq_hash'])
-					);
-				}
-			}
-		}
-
-		$encrypted = crypto_encapsulate(json_encode($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 */
 
-	$hubs = zot_gethub($sender,true);
 
-	if (! $hubs) {
-
-		/* 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 ((! $result['success']) || (! ($hubs = zot_gethub($sender,true)))) {
-			$ret['message'] = 'Hub not available.';
-			logger('mod_zot: no hub');
-			json_return_and_die($ret);
-		}
-	}
-
-
-	foreach($hubs as $hub) {
-
-		$sitekey = $hub['hubloc_sitekey'];
+function post_post(&$a) {
 
-		if(array_key_exists('sitekey',$sender) && $sender['sitekey']) {
+	require_once('Zotlabs/Zot/Receiver.php');
 
-			/*
-			 * This hub has now been proven to be valid.
-			 * Any hub with the same URL and a different sitekey cannot be valid.
-			 * Get rid of them (mark them deleted). There's a good chance they were re-installs.
-			 */
+	$z = new Zotlabs\Zot\Receiver($_REQUEST['data'],get_config('system','prvkey'));
 	
-			q("update hubloc set hubloc_deleted = 1, hubloc_error = 1 where hubloc_url = '%s' and hubloc_sitekey != '%s' ",
-				dbesc($hub['hubloc_url']),
-				dbesc($sender['sitekey'])
-			);
+	// notreached;
 
-			$sitekey = $sender['sitekey'];
-		}
-
-		// $sender['sitekey'] is a new addition to the protcol to distinguish 
-		// hublocs coming from re-installed sites. Older sites will not provide
-		// this field and we have to still mark them valid, since we can't tell
-		// if this hubloc has the same sitekey as the packet we received.
-
-
-		// Update our DB to show when we last communicated successfully with this hub
-		// This will allow us to prune dead hubs from using up resources
-
-		$r = q("update hubloc set hubloc_connected = '%s' where hubloc_id = %d and hubloc_sitekey = '%s' ",
-			dbesc(datetime_convert()),
-			intval($hub['hubloc_id']),
-			dbesc($sitekey)
-		);
-
-		// a dead hub came back to life - reset any tombstones we might have
-
-		if(intval($hub['hubloc_error'])) {
-			q("update hubloc set hubloc_error = 0 where hubloc_id = %d and hubloc_sitekey = '%s' ",
-				intval($hub['hubloc_id']),
-				dbesc($sitekey)		
-			);
-			if(intval($r[0]['hubloc_orphancheck'])) {
-				q("update hubloc set hubloc_orhpancheck = 0 where hubloc_id = %d and hubloc_sitekey = '%s' ",
-					intval($hub['hubloc_id']),
-					dbesc($sitekey)
-				);
-			}
-			q("update xchan set xchan_orphan = 0 where xchan_orphan = 1 and xchan_hash = '%s'",
-				dbesc($hub['hubloc_hash'])
-			);
-		}
-		
-		$connecting_url = $hub['hubloc_url'];
-	}
-
-
-	/** @TODO check which hub is primary and take action if mismatched */
-
-	if (array_key_exists('recipients', $data))
-		$recipients = $data['recipients'];
-
-
-	if ($msgtype === 'auth_check') {
-
-		/*
-		 * Requestor visits /magic/?dest=somewhere on their own site with a browser
-		 * magic redirects them to $destsite/post [with auth args....]
-		 * $destsite sends an auth_check packet to originator site
-		 * The auth_check packet is handled here by the originator's site 
-		 * - the browser session is still waiting
-		 * inside $destsite/post for everything to verify
-		 * If everything checks out we'll return a token to $destsite
-		 * and then $destsite will verify the token, authenticate the browser
-		 * session and then redirect to the original destination.
-		 * If authentication fails, the redirection to the original destination
-		 * will still take place but without authentication.
-		 */
-		logger('mod_zot: auth_check', LOGGER_DEBUG);
-
-		if (! $encrypted_packet) {
-			logger('mod_zot: auth_check packet was not encrypted.');
-			$ret['message'] .= 'no packet encryption' . EOL;
-			json_return_and_die($ret);
-		}
-
-		$arr = $data['sender'];
-		$sender_hash = make_xchan_hash($arr['guid'],$arr['guid_sig']);
-
-		// garbage collect any old unused notifications
-
-		// This was and should be 10 minutes but my hosting provider has time lag between the DB and 
-		// the web server. We should probably convert this to webserver time rather than DB time so 
-		// that the different clocks won't affect it and allow us to keep the time short. 
-
-		q("delete from verify where type = 'auth' and created < %s - INTERVAL %s",
-			db_utcnow(), db_quoteinterval('30 MINUTE')
-		);
-
-		$y = q("select xchan_pubkey from xchan where xchan_hash = '%s' limit 1",
-			dbesc($sender_hash)
-		);
-
-		// We created a unique hash in mod/magic.php when we invoked remote auth, and stored it in
-		// the verify table. It is now coming back to us as 'secret' and is signed by a channel at the other end.
-		// First verify their signature. We will have obtained a zot-info packet from them as part of the sender
-		// verification. 
-
-		if ((! $y) || (! rsa_verify($data['secret'], base64url_decode($data['secret_sig']),$y[0]['xchan_pubkey']))) {
-			logger('mod_zot: auth_check: sender not found or secret_sig invalid.');
-			$ret['message'] .= 'sender not found or sig invalid ' . print_r($y,true) . EOL;
-			json_return_and_die($ret);
-		}
-
-		// There should be exactly one recipient, the original auth requestor
-
-		$ret['message'] .= 'recipients ' . print_r($recipients,true) . EOL;
-
-		if ($data['recipients']) {
-
-			$arr = $data['recipients'][0];
-			$recip_hash = make_xchan_hash($arr['guid'], $arr['guid_sig']);
-			$c = q("select channel_id, channel_account_id, channel_prvkey from channel where channel_hash = '%s' limit 1",
-				dbesc($recip_hash)
-			);
-			if (! $c) {
-				logger('mod_zot: auth_check: recipient channel not found.');
-				$ret['message'] .= 'recipient not found.' . EOL;
-				json_return_and_die($ret);
-			}
-
-			$confirm = base64url_encode(rsa_sign($data['secret'] . $recip_hash,$c[0]['channel_prvkey']));
-
-			// This additionally checks for forged sites since we already stored the expected result in meta
-			// and we've already verified that this is them via zot_gethub() and that their key signed our token
-
-			$z = q("select id from verify where channel = %d and type = 'auth' and token = '%s' and meta = '%s' limit 1",
-				intval($c[0]['channel_id']),
-				dbesc($data['secret']),
-				dbesc($data['sender']['url'])
-			);
-			if (! $z) {
-				logger('mod_zot: auth_check: verification key not found.');
-				$ret['message'] .= 'verification key not found' . EOL;
-				json_return_and_die($ret);
-			}
-			$r = q("delete from verify where id = %d",
-				intval($z[0]['id'])
-			);
-
-			$u = q("select account_service_class from account where account_id = %d limit 1",
-				intval($c[0]['channel_account_id'])
-			);
-
-			logger('mod_zot: auth_check: success', LOGGER_DEBUG);
-			$ret['success'] = true;
-			$ret['confirm'] = $confirm;
-			if ($u && $u[0]['account_service_class'])
-				$ret['service_class'] = $u[0]['account_service_class'];
-
-			// Set "do not track" flag if this site or this channel's profile is restricted
-			// in some way
-
-			if (intval(get_config('system','block_public')))
-				$ret['DNT'] = true;
-			if (! perm_is_allowed($c[0]['channel_id'],'','view_profile'))
-				$ret['DNT'] = true;
-			if (get_pconfig($c[0]['channel_id'],'system','do_not_track'))
-				$ret['DNT'] = true;
-			if (get_pconfig($c[0]['channel_id'],'system','hide_online_status'))
-				$ret['DNT'] = true;
-
-			json_return_and_die($ret);
-		}
-		json_return_and_die($ret);
-	}
-
-	if ($msgtype === 'request') {
-		// request a particular post/conversation by message_id
-		$x = zot_process_message_request($data);
-		json_return_and_die($x);		
-	}
-
-	if ($msgtype === 'purge') {
-		if ($recipients) {
-			// basically this means "unfriend"
-			foreach ($recipients as $recip) {
-				$r = q("select channel.*,xchan.* from channel 
-					left join xchan on channel_hash = xchan_hash
-					where channel_guid = '%s' and channel_guid_sig = '%s' limit 1",
-					dbesc($recip['guid']),
-					dbesc($recip['guid_sig'])
-				);
-				if ($r) {
-					$r = q("select abook_id from abook where uid = %d and abook_xchan = '%s' limit 1",
-						intval($r[0]['channel_id']),
-						dbesc(make_xchan_hash($sender['guid'],$sender['guid_sig']))
-					);
-					if ($r) {
-						contact_remove($r[0]['channel_id'],$r[0]['abook_id']);
-					}
-				}
-			}
-		} else {
-			// Unfriend everybody - basically this means the channel has committed suicide
-			$arr = $data['sender'];
-			$sender_hash = make_xchan_hash($arr['guid'],$arr['guid_sig']);
-
-			require_once('include/Contact.php');
-			remove_all_xchan_resources($sender_hash);	
-
-			$ret['success'] = true;
-			json_return_and_die($ret);
-		}
-	}
-
-	if (($msgtype === 'refresh') || ($msgtype === 'force_refresh')) {
-
-		// remote channel info (such as permissions or photo or something)
-		// has been updated. Grab a fresh copy and sync it.
-		// The difference between refresh and force_refresh is that 
-		// force_refresh unconditionally creates a directory update record,
-		// even if no changes were detected upon processing.
-
-		if ($recipients) {
-
-			// This would be a permissions update, typically for one connection
-
-			foreach ($recipients as $recip) {
-				$r = q("select channel.*,xchan.* from channel 
-					left join xchan on channel_hash = xchan_hash
-					where channel_guid = '%s' and channel_guid_sig = '%s' limit 1",
-					dbesc($recip['guid']),
-					dbesc($recip['guid_sig'])
-				);
-
-				$x = zot_refresh(array(
-						'xchan_guid'     => $sender['guid'], 
-						'xchan_guid_sig' => $sender['guid_sig'],
-						'hubloc_url'     => $sender['url']
-				), $r[0], (($msgtype === 'force_refresh') ? true : false));
-			}
-		} else {
-
-			// system wide refresh
-
-			$x = zot_refresh(array(
-				'xchan_guid'     => $sender['guid'], 
-				'xchan_guid_sig' => $sender['guid_sig'],
-				'hubloc_url'     => $sender['url']
-			), null, (($msgtype === 'force_refresh') ? true : false));
-		}
-		$ret['success'] = true;
-		json_return_and_die($ret);
-	}
-
-	if ($msgtype === 'notify') {
-
-		logger('notify received from ' . $connecting_url);
-
-
-		$async = get_config('system','queued_fetch');
-
-		if ($async) {
-			// add to receive queue
-			// qreceive_add($data);
-		} else {
-			$x = zot_fetch($data);
-			$ret['delivery_report'] = $x;
-		}
-
-		$ret['success'] = true;
-		json_return_and_die($ret);
-	}
+	exit;
 
-	// catchall
-	json_return_and_die($ret);
 }