From 424a85bb9424d5b826734147add52f4d196f13c9 Mon Sep 17 00:00:00 2001
From: Michael <heluecht@pirati.ca>
Date: Sun, 18 Jul 2021 18:54:25 +0000
Subject: [PATCH] Fetch local data without HTTP requests

---
 src/Model/APContact.php      | 55 +++++++++++++++++++++++++-----------
 src/Protocol/ActivityPub.php |  2 --
 2 files changed, 39 insertions(+), 18 deletions(-)

diff --git a/src/Model/APContact.php b/src/Model/APContact.php
index e9500f85b..a4c97f623 100644
--- a/src/Model/APContact.php
+++ b/src/Model/APContact.php
@@ -31,11 +31,13 @@ use Friendica\DI;
 use Friendica\Network\Probe;
 use Friendica\Protocol\ActivityNamespace;
 use Friendica\Protocol\ActivityPub;
+use Friendica\Protocol\ActivityPub\Transmitter;
 use Friendica\Util\Crypto;
 use Friendica\Util\DateTimeFormat;
 use Friendica\Util\HTTPSignature;
 use Friendica\Util\JsonLD;
 use Friendica\Util\Network;
+use Friendica\Util\Strings;
 
 class APContact
 {
@@ -161,22 +163,31 @@ class APContact
 			DI::cache()->set($cachekey, System::callstack(20), Duration::FIVE_MINUTES);
 		}
 
-		$curlResult = HTTPSignature::fetchRaw($url);
-		$failed = empty($curlResult) || empty($curlResult->getBody()) ||
-			(!$curlResult->isSuccess() && ($curlResult->getReturnCode() != 410));
-
-		if (!$failed) {
-			$data = json_decode($curlResult->getBody(), true);
-			$failed = empty($data) || !is_array($data);
+		if (Network::isLocalLink($url) && ($local_uid = User::getIdForURL($url))) {
+			$data  = Transmitter::getProfile($local_uid);
+			$local_owner = User::getOwnerDataById($local_uid);
 		}
 
-		if (!$failed && ($curlResult->getReturnCode() == 410)) {
-			$data = ['@context' => ActivityPub::CONTEXT, 'id' => $url, 'type' => 'Tombstone'];
-		}
+		if (empty($data)) {
+			$local_owner = [];
 
-		if ($failed) {
-			self::markForArchival($fetched_contact ?: []);
-			return $fetched_contact;
+			$curlResult = HTTPSignature::fetchRaw($url);
+			$failed = empty($curlResult) || empty($curlResult->getBody()) ||
+				(!$curlResult->isSuccess() && ($curlResult->getReturnCode() != 410));
+
+			if (!$failed) {
+				$data = json_decode($curlResult->getBody(), true);
+				$failed = empty($data) || !is_array($data);
+			}
+
+			if (!$failed && ($curlResult->getReturnCode() == 410)) {
+				$data = ['@context' => ActivityPub::CONTEXT, 'id' => $url, 'type' => 'Tombstone'];
+			}
+
+			if ($failed) {
+				self::markForArchival($fetched_contact ?: []);
+				return $fetched_contact;
+			}
 		}
 
 		$compacted = JsonLD::compact($data);
@@ -267,7 +278,11 @@ class APContact
 		}
 
 		if (!empty($apcontact['following'])) {
-			$following = ActivityPub::fetchContent($apcontact['following']);
+			if (!empty($local_owner)) {
+				$following = ActivityPub\Transmitter::getContacts($local_owner, [Contact::SHARING, Contact::FRIEND], 'following');
+			} else {
+				$following = ActivityPub::fetchContent($apcontact['following']);
+			}
 			if (!empty($following['totalItems'])) {
 				// Mastodon seriously allows for this condition? 
 				// Jul 14 2021 - See https://mastodon.social/@BLUW for a negative following count
@@ -279,7 +294,11 @@ class APContact
 		}
 
 		if (!empty($apcontact['followers'])) {
-			$followers = ActivityPub::fetchContent($apcontact['followers']);
+			if (!empty($local_owner)) {
+				$followers = ActivityPub\Transmitter::getContacts($local_owner, [Contact::FOLLOWER, Contact::FRIEND], 'followers');
+			} else {
+				$followers = ActivityPub::fetchContent($apcontact['followers']);
+			}
 			if (!empty($followers['totalItems'])) {
 				// Mastodon seriously allows for this condition? 
 				// Jul 14 2021 - See https://mastodon.online/@goes11 for a negative followers count
@@ -291,7 +310,11 @@ class APContact
 		}
 
 		if (!empty($apcontact['outbox'])) {
-			$outbox = ActivityPub::fetchContent($apcontact['outbox']);
+			if (!empty($local_owner)) {
+				$outbox = ActivityPub\Transmitter::getOutbox($local_owner);
+			} else {
+				$outbox = ActivityPub::fetchContent($apcontact['outbox']);
+			}
 			if (!empty($outbox['totalItems'])) {
 				$apcontact['statuses_count'] = $outbox['totalItems'];
 			}
diff --git a/src/Protocol/ActivityPub.php b/src/Protocol/ActivityPub.php
index 134f69f4a..0f62ab537 100644
--- a/src/Protocol/ActivityPub.php
+++ b/src/Protocol/ActivityPub.php
@@ -22,8 +22,6 @@
 namespace Friendica\Protocol;
 
 use Friendica\Core\Protocol;
-use Friendica\Database\DBA;
-use Friendica\DI;
 use Friendica\Model\APContact;
 use Friendica\Model\User;
 use Friendica\Util\HTTPSignature;