From e3d227f3c9b9bbb363d34033e4fd3f909697a967 Mon Sep 17 00:00:00 2001
From: Michael <heluecht@pirati.ca>
Date: Wed, 19 May 2021 06:18:42 +0000
Subject: [PATCH] API: Parameter cleanup

---
 src/Module/Api/Friendica/Events/Index.php     | 10 ++--
 .../Api/Mastodon/Accounts/Followers.php       |  2 +
 .../Api/Mastodon/Accounts/Following.php       |  4 +-
 src/Module/Api/Mastodon/Accounts/Note.php     |  6 ++-
 .../Api/Mastodon/Accounts/Relationships.php   |  8 +++-
 src/Module/Api/Mastodon/Accounts/Statuses.php |  4 +-
 src/Module/Api/Mastodon/Blocks.php            |  2 +
 src/Module/Api/Mastodon/Bookmarks.php         | 10 ++--
 src/Module/Api/Mastodon/Favourited.php        |  4 +-
 src/Module/Api/Mastodon/Lists.php             | 11 +++--
 src/Module/Api/Mastodon/Lists/Accounts.php    |  4 +-
 src/Module/Api/Mastodon/Mutes.php             |  2 +
 src/Module/Api/Mastodon/Notifications.php     |  2 +-
 src/Module/Api/Mastodon/Search.php            |  4 +-
 src/Module/Api/Mastodon/Suggestions.php       |  7 +--
 src/Module/Api/Mastodon/Timelines/Home.php    | 20 +++++++-
 .../Api/Mastodon/Timelines/ListTimeline.php   | 20 +++++++-
 .../Api/Mastodon/Timelines/PublicTimeline.php |  2 +-
 src/Module/Api/Mastodon/Timelines/Tag.php     | 46 ++++++++++---------
 src/Module/Api/Mastodon/Trends.php            |  7 +--
 src/Module/OAuth/Authorize.php                | 24 +++++-----
 src/Module/OAuth/Token.php                    | 28 +++++------
 22 files changed, 147 insertions(+), 80 deletions(-)

diff --git a/src/Module/Api/Friendica/Events/Index.php b/src/Module/Api/Friendica/Events/Index.php
index 3efa1a919..53408541a 100644
--- a/src/Module/Api/Friendica/Events/Index.php
+++ b/src/Module/Api/Friendica/Events/Index.php
@@ -39,11 +39,13 @@ class Index extends BaseApi
 			throw new HTTPException\ForbiddenException();
 		}
 
-		$since_id = $_REQUEST['since_id'] ?? 0;
-		$count    = $_REQUEST['count'] ?? 20;
+		$request = self::getRequest([
+			'since_id' => 0,
+			'count'    => 0,
+		]);
 
-		$condition = ["`id` > ? AND `uid` = ?", $since_id, self::$current_user_id];
-		$params = ['limit' => $count];
+		$condition = ["`id` > ? AND `uid` = ?", $request['since_id'], self::$current_user_id];
+		$params = ['limit' => $request['count']];
 		$events = DBA::selectToArray('event', [], $condition, $params);
 
 		$items = [];
diff --git a/src/Module/Api/Mastodon/Accounts/Followers.php b/src/Module/Api/Mastodon/Accounts/Followers.php
index 67f57cb29..65bb3d75f 100644
--- a/src/Module/Api/Mastodon/Accounts/Followers.php
+++ b/src/Module/Api/Mastodon/Accounts/Followers.php
@@ -49,6 +49,8 @@ class Followers extends BaseApi
 			DI::mstdnError()->RecordNotFound();
 		}
 
+		// @todo provide HTTP link header
+
 		$request = self::getRequest([
 			'max_id'   => 0,  // Return results older than this id
 			'since_id' => 0,  // Return results newer than this id
diff --git a/src/Module/Api/Mastodon/Accounts/Following.php b/src/Module/Api/Mastodon/Accounts/Following.php
index 582f84d7f..42b9da4b4 100644
--- a/src/Module/Api/Mastodon/Accounts/Following.php
+++ b/src/Module/Api/Mastodon/Accounts/Following.php
@@ -49,10 +49,12 @@ class Following extends BaseApi
 			DI::mstdnError()->RecordNotFound();
 		}
 
+		// @todo provide HTTP link header
+
 		$request = self::getRequest([
 			'max_id'   => 0,  // Return results older than this id
 			'since_id' => 0,  // Return results newer than this id
-			'limit'    => 20, // Maximum number of results to return. Defaults to 20.
+			'limit'    => 40, // Maximum number of results to return. Defaults to 40.
 		]);
 
 		$params = ['order' => ['relation-cid' => true], 'limit' => $request['limit']];
diff --git a/src/Module/Api/Mastodon/Accounts/Note.php b/src/Module/Api/Mastodon/Accounts/Note.php
index 1f3dd8d91..477bcb824 100644
--- a/src/Module/Api/Mastodon/Accounts/Note.php
+++ b/src/Module/Api/Mastodon/Accounts/Note.php
@@ -41,12 +41,16 @@ class Note extends BaseApi
 			DI::mstdnError()->UnprocessableEntity();
 		}
 
+		$request = self::getRequest([
+			'comment' => '',
+		]);
+
 		$cdata = Contact::getPublicAndUserContacID($parameters['id'], $uid);
 		if (empty($cdata['user'])) {
 			DI::mstdnError()->RecordNotFound();
 		}
 
-		DBA::update('contact', ['info' => $_REQUEST['comment'] ?? ''], ['id' => $cdata['user']]);
+		DBA::update('contact', ['info' => $request['comment']], ['id' => $cdata['user']]);
 
 		System::jsonExit(DI::mstdnRelationship()->createFromContactId($parameters['id'], $uid)->toArray());
 	}
diff --git a/src/Module/Api/Mastodon/Accounts/Relationships.php b/src/Module/Api/Mastodon/Accounts/Relationships.php
index c134adf48..9e966d215 100644
--- a/src/Module/Api/Mastodon/Accounts/Relationships.php
+++ b/src/Module/Api/Mastodon/Accounts/Relationships.php
@@ -40,13 +40,17 @@ class Relationships extends BaseApi
 		self::login(self::SCOPE_READ);
 		$uid = self::getCurrentUserID();
 
-		if (empty($_REQUEST['id']) || !is_array($_REQUEST['id'])) {
+		$request = self::getRequest([
+			'id' => [],
+		]);
+
+		if (empty($request['id']) || !is_array($request['id'])) {
 			DI::mstdnError()->UnprocessableEntity();
 		}
 
 		$relationsships = [];
 
-		foreach ($_REQUEST['id'] as $id) {
+		foreach ($request['id'] as $id) {
 			$relationsships[] = DI::mstdnRelationship()->createFromContactId($id, $uid);
 		}
 
diff --git a/src/Module/Api/Mastodon/Accounts/Statuses.php b/src/Module/Api/Mastodon/Accounts/Statuses.php
index e2aeade55..07a1e5adc 100644
--- a/src/Module/Api/Mastodon/Accounts/Statuses.php
+++ b/src/Module/Api/Mastodon/Accounts/Statuses.php
@@ -59,7 +59,9 @@ class Statuses extends BaseApi
 			'limit'           => 20,    // Maximum number of results to return. Defaults to 20.
 			'pinned'          => false, // Only pinned posts
 			'exclude_replies' => false, // Don't show comments
-			'with_muted'      => false, // Unknown parameter
+			'with_muted'      => false, // Pleroma extension: return activities by muted (not by blocked!) users.
+			'exclude_reblogs' => false, // Undocumented parameter
+			'tagged'          => false, // Undocumented parameter
 		]);
 
 		$params = ['order' => ['uri-id' => true], 'limit' => $request['limit']];
diff --git a/src/Module/Api/Mastodon/Blocks.php b/src/Module/Api/Mastodon/Blocks.php
index b1d802d05..651589f64 100644
--- a/src/Module/Api/Mastodon/Blocks.php
+++ b/src/Module/Api/Mastodon/Blocks.php
@@ -49,6 +49,8 @@ class Blocks extends BaseApi
 			DI::mstdnError()->RecordNotFound();
 		}
 
+		// @todo provide HTTP link header
+
 		$request = self::getRequest([
 			'max_id'   => 0,  // Return results older than this id
 			'since_id' => 0,  // Return results newer than this id
diff --git a/src/Module/Api/Mastodon/Bookmarks.php b/src/Module/Api/Mastodon/Bookmarks.php
index 90afbc1d3..fa8f01f92 100644
--- a/src/Module/Api/Mastodon/Bookmarks.php
+++ b/src/Module/Api/Mastodon/Bookmarks.php
@@ -43,11 +43,11 @@ class Bookmarks extends BaseApi
 		$uid = self::getCurrentUserID();
 
 		$request = self::getRequest([
-			'limit'    => 20, // Maximum number of results to return. Defaults to 20.
-			'max_id'   => 0,  // Return results older than id
-			'since_id' => 0,  // Return results newer than id
-			'min_id'   => 0,  // Return results immediately newer than id
-			'with_muted' => false, // Unknown parameter
+			'limit'      => 20,    // Maximum number of results to return. Defaults to 20.
+			'max_id'     => 0,     // Return results older than id
+			'since_id'   => 0,     // Return results newer than id
+			'min_id'     => 0,     // Return results immediately newer than id
+			'with_muted' => false, // Pleroma extension: return activities by muted (not by blocked!) users.
 		]);
 
 		$params = ['order' => ['uri-id' => true], 'limit' => $request['limit']];
diff --git a/src/Module/Api/Mastodon/Favourited.php b/src/Module/Api/Mastodon/Favourited.php
index b5bd78690..2b01c95fc 100644
--- a/src/Module/Api/Mastodon/Favourited.php
+++ b/src/Module/Api/Mastodon/Favourited.php
@@ -43,11 +43,13 @@ class Favourited extends BaseApi
 		self::login(self::SCOPE_READ);
 		$uid = self::getCurrentUserID();
 
+		// @todo provide HTTP link header
+
 		$request = self::getRequest([
 			'limit'      => 20,    // Maximum number of results to return. Defaults to 20.
 			'min_id'     => 0,     // Return results immediately newer than id
 			'max_id'     => 0,     // Return results older than id
-			'with_muted' => false, // Unknown parameter
+			'with_muted' => false, // Pleroma extension: return activities by muted (not by blocked!) users.
 		]);
 
 		$params = ['order' => ['thr-parent-id' => true], 'limit' => $request['limit']];
diff --git a/src/Module/Api/Mastodon/Lists.php b/src/Module/Api/Mastodon/Lists.php
index 496550d4a..5681ebf8a 100644
--- a/src/Module/Api/Mastodon/Lists.php
+++ b/src/Module/Api/Mastodon/Lists.php
@@ -57,15 +57,18 @@ class Lists extends BaseApi
 		self::login(self::SCOPE_WRITE);
 
 		$uid   = self::getCurrentUserID();
-		$title = $_REQUEST['title'] ?? '';
 
-		if (empty($title)) {
+		$request = self::getRequest([
+			'title' => '',
+		]);
+
+		if (empty($request['title'])) {
 			DI::mstdnError()->UnprocessableEntity();
 		}
 
-		Group::create($uid, $title);
+		Group::create($uid, $request['title']);
 
-		$id = Group::getIdByName($uid, $title);
+		$id = Group::getIdByName($uid, $request['title']);
 		if (!$id) {
 			DI::mstdnError()->InternalError();
 		}
diff --git a/src/Module/Api/Mastodon/Lists/Accounts.php b/src/Module/Api/Mastodon/Lists/Accounts.php
index 16b1d9d0f..924f114af 100644
--- a/src/Module/Api/Mastodon/Lists/Accounts.php
+++ b/src/Module/Api/Mastodon/Lists/Accounts.php
@@ -27,7 +27,7 @@ use Friendica\DI;
 use Friendica\Module\BaseApi;
 
 /**
- * @see https://docs.joinmastodon.org/methods/timelines/lists/
+ * @see https://docs.joinmastodon.org/methods/timelines/lists/#accounts-in-a-list
  *
  * Currently the output will be unordered since we use public contact ids in the api and not user contact ids.
  */
@@ -61,6 +61,8 @@ class Accounts extends BaseApi
 			DI::mstdnError()->RecordNotFound();
 		}
 
+		// @todo provide HTTP link header
+
 		$request = self::getRequest([
 			'max_id'   => 0,  // Return results older than this id
 			'since_id' => 0,  // Return results newer than this id
diff --git a/src/Module/Api/Mastodon/Mutes.php b/src/Module/Api/Mastodon/Mutes.php
index f3aca86fa..f0c225f18 100644
--- a/src/Module/Api/Mastodon/Mutes.php
+++ b/src/Module/Api/Mastodon/Mutes.php
@@ -49,6 +49,8 @@ class Mutes extends BaseApi
 			DI::mstdnError()->RecordNotFound();
 		}
 
+		// @todo provide HTTP link header
+
 		$request = self::getRequest([
 			'max_id'   => 0,  // Return results older than this id
 			'since_id' => 0,  // Return results newer than this id
diff --git a/src/Module/Api/Mastodon/Notifications.php b/src/Module/Api/Mastodon/Notifications.php
index 6704e958f..9a606c2aa 100644
--- a/src/Module/Api/Mastodon/Notifications.php
+++ b/src/Module/Api/Mastodon/Notifications.php
@@ -57,7 +57,7 @@ class Notifications extends BaseApi
 			'limit'         => 20,    // Maximum number of results to return (default 20)
 			'exclude_types' => [],    // Array of types to exclude (follow, favourite, reblog, mention, poll, follow_request)
 			'account_id'    => 0,     // Return only notifications received from this account
-			'with_muted'    => false, // Unknown parameter
+			'with_muted'    => false, // Pleroma extension: return activities by muted (not by blocked!) users.
 			'count'         => 0,     // Unknown parameter
 		]);
 
diff --git a/src/Module/Api/Mastodon/Search.php b/src/Module/Api/Mastodon/Search.php
index 592175149..6bac5779c 100644
--- a/src/Module/Api/Mastodon/Search.php
+++ b/src/Module/Api/Mastodon/Search.php
@@ -55,8 +55,8 @@ class Search extends BaseApi
 			'q'                  => '',    // The search query
 			'resolve'            => false, // Attempt WebFinger lookup. Defaults to false.
 			'limit'              => 20,    // Maximum number of results to load, per type. Defaults to 20. Max 40.
-			'offset'             => 0,     // Maximum number of results to load, per type. Defaults to 20. Max 40.
-			'following'          => false, // Only who the user is following. Defaults to false.
+			'offset'             => 0,     // Offset in search results. Used for pagination. Defaults to 0.
+			'following'          => false, // Only include accounts that the user is following. Defaults to false.
 		]);
 		
 		if (empty($request['q'])) {
diff --git a/src/Module/Api/Mastodon/Suggestions.php b/src/Module/Api/Mastodon/Suggestions.php
index df434d2dc..27c64decd 100644
--- a/src/Module/Api/Mastodon/Suggestions.php
+++ b/src/Module/Api/Mastodon/Suggestions.php
@@ -40,10 +40,11 @@ class Suggestions extends BaseApi
 		self::login(self::SCOPE_READ);
 		$uid = self::getCurrentUserID();
 
-		// Maximum number of results to return. Defaults to 40.
-		$limit = (int)!isset($_REQUEST['limit']) ? 40 : $_REQUEST['limit'];
+		$request = self::getRequest([
+			'limit' => 40, // Maximum number of results to return. Defaults to 40.
+		]);
 
-		$suggestions = Contact\Relation::getSuggestions($uid, 0, $limit);
+		$suggestions = Contact\Relation::getSuggestions($uid, 0, $request['limit']);
 
 		$accounts = [];
 
diff --git a/src/Module/Api/Mastodon/Timelines/Home.php b/src/Module/Api/Mastodon/Timelines/Home.php
index 07a5bc7e6..c4ca074f4 100644
--- a/src/Module/Api/Mastodon/Timelines/Home.php
+++ b/src/Module/Api/Mastodon/Timelines/Home.php
@@ -47,8 +47,11 @@ class Home extends BaseApi
 			'since_id'   => 0,     // Return results newer than id
 			'min_id'     => 0,     // Return results immediately newer than id
 			'limit'      => 20,    // Maximum number of results to return. Defaults to 20.
-			'local'      => false, // Return only local statuses? Defaults to false.
-			'with_muted' => false, // Unknown parameter
+			'local'      => false, // Return only local statuses?
+			'with_muted' => false, // Pleroma extension: return activities by muted (not by blocked!) users.
+			'only_media' => false, // Show only statuses with media attached? Defaults to false.
+			'local'      => false, // Show only local statuses? Defaults to false.
+			'remote'     => false, // Show only remote statuses? Defaults to false.
 		]);
 
 		$params = ['order' => ['uri-id' => true], 'limit' => $request['limit']];
@@ -73,6 +76,19 @@ class Home extends BaseApi
 			$params['order'] = ['uri-id'];
 		}
 
+		if ($request['only_media']) {
+			$condition = DBA::mergeConditions($condition, ["`uri-id` IN (SELECT `uri-id` FROM `post-media` WHERE `type` IN (?, ?, ?))",
+				Post\Media::AUDIO, Post\Media::IMAGE, Post\Media::VIDEO]);
+		}
+
+		if ($request['local']) {
+			$condition = DBA::mergeConditions($condition, ["`uri-id` IN (SELECT `uri-id` FROM `post-user` WHERE `origin`)"]);
+		}
+
+		if ($request['remote']) {
+			$condition = DBA::mergeConditions($condition, ["NOT `uri-id` IN (SELECT `uri-id` FROM `post-user` WHERE `origin`)"]);
+		}
+
 		$items = Post::selectForUser($uid, ['uri-id'], $condition, $params);
 
 		$statuses = [];
diff --git a/src/Module/Api/Mastodon/Timelines/ListTimeline.php b/src/Module/Api/Mastodon/Timelines/ListTimeline.php
index f50c2d2aa..0ff22cba4 100644
--- a/src/Module/Api/Mastodon/Timelines/ListTimeline.php
+++ b/src/Module/Api/Mastodon/Timelines/ListTimeline.php
@@ -50,8 +50,11 @@ class ListTimeline extends BaseApi
 			'max_id'     => 0,     // Return results older than id
 			'since_id'   => 0,     // Return results newer than id
 			'min_id'     => 0,     // Return results immediately newer than id
-			'limit'      => 20,    // Maximum number of results to return. Defaults to 20.
-			'with_muted' => false, // Unknown parameter
+			'limit'      => 20,    // Maximum number of results to return. Defaults to 20.Return results older than this ID.
+			'with_muted' => false, // Pleroma extension: return activities by muted (not by blocked!) users.
+			'only_media' => false, // Show only statuses with media attached? Defaults to false.
+			'local'      => false, // Show only local statuses? Defaults to false.
+			'remote'     => false, // Show only remote statuses? Defaults to false.
 		]);
 
 		$params = ['order' => ['uri-id' => true], 'limit' => $request['limit']];
@@ -73,6 +76,19 @@ class ListTimeline extends BaseApi
 			$params['order'] = ['uri-id'];
 		}
 
+		if ($request['only_media']) {
+			$condition = DBA::mergeConditions($condition, ["`uri-id` IN (SELECT `uri-id` FROM `post-media` WHERE `type` IN (?, ?, ?))",
+				Post\Media::AUDIO, Post\Media::IMAGE, Post\Media::VIDEO]);
+		}
+
+		if ($request['local']) {
+			$condition = DBA::mergeConditions($condition, ["`uri-id` IN (SELECT `uri-id` FROM `post-user` WHERE `origin`)"]);
+		}
+
+		if ($request['remote']) {
+			$condition = DBA::mergeConditions($condition, ["NOT `uri-id` IN (SELECT `uri-id` FROM `post-user` WHERE `origin`)"]);
+		}
+
 		$items = Post::selectForUser($uid, ['uri-id'], $condition, $params);
 
 		$statuses = [];
diff --git a/src/Module/Api/Mastodon/Timelines/PublicTimeline.php b/src/Module/Api/Mastodon/Timelines/PublicTimeline.php
index fc5227778..05f3c7baf 100644
--- a/src/Module/Api/Mastodon/Timelines/PublicTimeline.php
+++ b/src/Module/Api/Mastodon/Timelines/PublicTimeline.php
@@ -49,7 +49,7 @@ class PublicTimeline extends BaseApi
 			'since_id'   => 0,     // Return results newer than this id
 			'min_id'     => 0,     // Return results immediately newer than this id
 			'limit'      => 20,    // Maximum number of results to return. Defaults to 20.
-			'with_muted' => false, // Unknown parameter
+			'with_muted' => false, // Pleroma extension: return activities by muted (not by blocked!) users.
 		]);
 
 		$params = ['order' => ['uri-id' => true], 'limit' => $request['limit']];
diff --git a/src/Module/Api/Mastodon/Timelines/Tag.php b/src/Module/Api/Mastodon/Timelines/Tag.php
index b5d0d2140..e33923dfd 100644
--- a/src/Module/Api/Mastodon/Timelines/Tag.php
+++ b/src/Module/Api/Mastodon/Timelines/Tag.php
@@ -47,44 +47,46 @@ class Tag extends BaseApi
 			DI::mstdnError()->UnprocessableEntity();
 		}
 
-		// If true, return only local statuses. Defaults to false.
-		$local = (bool)!isset($_REQUEST['local']) ? false : ($_REQUEST['local'] == 'true');
-		// If true, return only statuses with media attachments. Defaults to false.
-		$only_media = (bool)!isset($_REQUEST['only_media']) ? false : ($_REQUEST['only_media'] == 'true');
-		// Return results older than this ID.
-		$max_id = (int)!isset($_REQUEST['max_id']) ? 0 : $_REQUEST['max_id'];
-		// Return results newer than this ID.
-		$since_id = (int)!isset($_REQUEST['since_id']) ? 0 : $_REQUEST['since_id'];
-		// Return results immediately newer than this ID.
-		$min_id = (int)!isset($_REQUEST['min_id']) ? 0 : $_REQUEST['min_id'];
-		// Maximum number of results to return. Defaults to 20.
-		$limit = (int)!isset($_REQUEST['limit']) ? 20 : $_REQUEST['limit'];
+		$request = self::getRequest([
+			'local'      => false, // If true, return only local statuses. Defaults to false.
+			'remote'     => false, // Show only remote statuses? Defaults to false.
+			'only_media' => false, // If true, return only statuses with media attachments. Defaults to false.
+			'max_id'     => 0,     // Return results older than this ID.
+			'since_id'   => 0,     // Return results newer than this ID.
+			'min_id'     => 0,     // Return results immediately newer than this ID.
+			'limit'      => 20,    // Maximum number of results to return. Defaults to 20.
+			'with_muted' => false, // Pleroma extension: return activities by muted (not by blocked!) users.
+		]);
 
-		$params = ['order' => ['uri-id' => true], 'limit' => $limit];
+		$params = ['order' => ['uri-id' => true], 'limit' => $request['limit']];
 
 		$condition = ["`name` = ? AND (`uid` = ? OR (`uid` = ? AND NOT `global`))
 			AND (`network` IN (?, ?, ?, ?) OR (`uid` = ? AND `uid` != ?))",
 			$parameters['hashtag'], 0, $uid, Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS, $uid, 0];
 
-		if ($local) {
+		if ($request['local']) {
 			$condition = DBA::mergeConditions($condition, ["`uri-id` IN (SELECT `uri-id` FROM `post-user` WHERE `origin`)"]);
 		}
 
-		if ($only_media) {
+		if ($request['remote']) {
+			$condition = DBA::mergeConditions($condition, ["NOT `uri-id` IN (SELECT `uri-id` FROM `post-user` WHERE `origin`)"]);
+		}
+
+		if ($request['only_media']) {
 			$condition = DBA::mergeConditions($condition, ["`uri-id` IN (SELECT `uri-id` FROM `post-media` WHERE `type` IN (?, ?, ?))",
 				Post\Media::AUDIO, Post\Media::IMAGE, Post\Media::VIDEO]);
 		}
 
-		if (!empty($max_id)) {
-			$condition = DBA::mergeConditions($condition, ["`uri-id` < ?", $max_id]);
+		if (!empty($request['max_id'])) {
+			$condition = DBA::mergeConditions($condition, ["`uri-id` < ?", $request['max_id']]);
 		}
 
-		if (!empty($since_id)) {
-			$condition = DBA::mergeConditions($condition, ["`uri-id` > ?", $since_id]);
+		if (!empty($request['since_id'])) {
+			$condition = DBA::mergeConditions($condition, ["`uri-id` > ?", $request['since_id']]);
 		}
 
-		if (!empty($min_id)) {
-			$condition = DBA::mergeConditions($condition, ["`uri-id` > ?", $min_id]);
+		if (!empty($request['min_id'])) {
+			$condition = DBA::mergeConditions($condition, ["`uri-id` > ?", $request['min_id']]);
 
 			$params['order'] = ['uri-id'];
 		}
@@ -97,7 +99,7 @@ class Tag extends BaseApi
 		}
 		DBA::close($items);
 
-		if (!empty($min_id)) {
+		if (!empty($request['min_id'])) {
 			array_reverse($statuses);
 		}
 
diff --git a/src/Module/Api/Mastodon/Trends.php b/src/Module/Api/Mastodon/Trends.php
index 0171db661..7765a175a 100644
--- a/src/Module/Api/Mastodon/Trends.php
+++ b/src/Module/Api/Mastodon/Trends.php
@@ -37,8 +37,9 @@ class Trends extends BaseApi
 	 */
 	public static function rawContent(array $parameters = [])
 	{
-		// Maximum number of results to return. Defaults to 10.
-		$limit = (int)!isset($_REQUEST['limit']) ? 10 : $_REQUEST['limit'];
+		$request = self::getRequest([
+			'limit' => 20, // Maximum number of results to return. Defaults to 10.
+		]);
 
 		$trending = [];
 		$tags = Tag::getGlobalTrendingHashtags(24, 20);
@@ -48,6 +49,6 @@ class Trends extends BaseApi
 			$trending[] = $hashtag->toArray();
 		}
 
-		System::jsonExit(array_slice($trending, 0, $limit));
+		System::jsonExit(array_slice($trending, 0, $request['limit']));
 	}
 }
diff --git a/src/Module/OAuth/Authorize.php b/src/Module/OAuth/Authorize.php
index 3834c0cd5..d5dc68932 100644
--- a/src/Module/OAuth/Authorize.php
+++ b/src/Module/OAuth/Authorize.php
@@ -37,24 +37,26 @@ class Authorize extends BaseApi
 	 */
 	public static function rawContent(array $parameters = [])
 	{
-		$response_type = $_REQUEST['response_type'] ?? '';
-		$client_id     = $_REQUEST['client_id'] ?? '';
-		$client_secret = $_REQUEST['client_secret'] ?? ''; // Isn't normally provided. We will use it if present.
-		$redirect_uri  = $_REQUEST['redirect_uri'] ?? '';
-		$scope         = $_REQUEST['scope'] ?? 'read';
-		$state         = $_REQUEST['state'] ?? '';
+		$request = self::getRequest([
+			'response_type' => '',
+			'client_id'     => '',
+			'client_secret' => '', // Isn't normally provided. We will use it if present.
+			'redirect_uri'  => '',
+			'scope'         => 'read',
+			'state'         => '',
+		]);
 
-		if ($response_type != 'code') {
+		if ($request['response_type'] != 'code') {
 			Logger::warning('Unsupported or missing response type', ['request' => $_REQUEST]);
 			DI::mstdnError()->UnprocessableEntity(DI::l10n()->t('Unsupported or missing response type'));
 		}
 
-		if (empty($client_id) || empty($redirect_uri)) {
+		if (empty($request['client_id']) || empty($request['redirect_uri'])) {
 			Logger::warning('Incomplete request data', ['request' => $_REQUEST]);
 			DI::mstdnError()->UnprocessableEntity(DI::l10n()->t('Incomplete request data'));
 		}
 
-		$application = self::getApplication($client_id, $client_secret, $redirect_uri);
+		$application = self::getApplication($request['client_id'], $request['client_secret'], $request['redirect_uri']);
 		if (empty($application)) {
 			DI::mstdnError()->UnprocessableEntity();
 		}
@@ -80,11 +82,11 @@ class Authorize extends BaseApi
 
 		DI::session()->remove('oauth_acknowledge');
 
-		$token = self::createTokenForUser($application, $uid, $scope);
+		$token = self::createTokenForUser($application, $uid, $request['scope']);
 		if (!$token) {
 			DI::mstdnError()->UnprocessableEntity();
 		}
 
-		DI::app()->redirect($application['redirect_uri'] . (strpos($application['redirect_uri'], '?') ? '&' : '?') . http_build_query(['code' => $token['code'], 'state' => $state]));
+		DI::app()->redirect($application['redirect_uri'] . (strpos($application['redirect_uri'], '?') ? '&' : '?') . http_build_query(['code' => $token['code'], 'state' => $request['state']]));
 	}
 }
diff --git a/src/Module/OAuth/Token.php b/src/Module/OAuth/Token.php
index c7a810969..780fc7cea 100644
--- a/src/Module/OAuth/Token.php
+++ b/src/Module/OAuth/Token.php
@@ -35,39 +35,41 @@ class Token extends BaseApi
 {
 	public static function post(array $parameters = [])
 	{
-		$grant_type    = $_REQUEST['grant_type'] ?? '';
-		$code          = $_REQUEST['code'] ?? '';
-		$redirect_uri  = $_REQUEST['redirect_uri'] ?? '';
-		$client_id     = $_REQUEST['client_id'] ?? '';
-		$client_secret = $_REQUEST['client_secret'] ?? '';
+		$request = self::getRequest([
+			'grant_type'    => '',
+			'code'          => '',
+			'redirect_uri'  => '',
+			'client_id'     => '',
+			'client_secret' => '',
+		]);
 
 		// AndStatus transmits the client data in the AUTHORIZATION header field, see https://github.com/andstatus/andstatus/issues/530
-		if (empty($client_id) && !empty($_SERVER['HTTP_AUTHORIZATION']) && (substr($_SERVER['HTTP_AUTHORIZATION'], 0, 6) == 'Basic ')) {
+		if (empty($request['client_id']) && !empty($_SERVER['HTTP_AUTHORIZATION']) && (substr($_SERVER['HTTP_AUTHORIZATION'], 0, 6) == 'Basic ')) {
 			$datapair = explode(':', base64_decode(trim(substr($_SERVER['HTTP_AUTHORIZATION'], 6))));
 			if (count($datapair) == 2) {
-				$client_id     = $datapair[0];
-				$client_secret = $datapair[1];
+				$request['client_id']     = $datapair[0];
+				$request['client_secret'] = $datapair[1];
 			}
 		}
 
-		if (empty($client_id) || empty($client_secret)) {
+		if (empty($request['client_id']) || empty($request['client_secret'])) {
 			Logger::warning('Incomplete request data', ['request' => $_REQUEST]);
 			DI::mstdnError()->UnprocessableEntity(DI::l10n()->t('Incomplete request data'));
 		}
 
-		$application = self::getApplication($client_id, $client_secret, $redirect_uri);
+		$application = self::getApplication($request['client_id'], $request['client_secret'], $request['redirect_uri']);
 		if (empty($application)) {
 			DI::mstdnError()->UnprocessableEntity();
 		}
 
-		if ($grant_type == 'client_credentials') {
+		if ($request['grant_type'] == 'client_credentials') {
 			// the "client_credentials" are used as a token for the application itself.
 			// see https://aaronparecki.com/oauth-2-simplified/#client-credentials
 			$token = self::createTokenForUser($application, 0, '');
-		} elseif ($grant_type == 'authorization_code') {
+		} elseif ($request['grant_type'] == 'authorization_code') {
 			// For security reasons only allow freshly created tokens
 			$condition = ["`redirect_uri` = ? AND `id` = ? AND `code` = ? AND `created_at` > UTC_TIMESTAMP() - INTERVAL ? MINUTE",
-				$redirect_uri, $application['id'], $code, 5];
+				$request['redirect_uri'], $application['id'], $request['code'], 5];
 
 			$token = DBA::selectFirst('application-view', ['access_token', 'created_at'], $condition);
 			if (!DBA::isResult($token)) {