From bcc8ed378c1920bc66d0f301f1060e7ebf894999 Mon Sep 17 00:00:00 2001
From: Michael <heluecht@pirati.ca>
Date: Mon, 29 Jul 2019 05:09:11 +0000
Subject: [PATCH] ActivityPub: We now do support transmitting alternative image
 descriptions

---
 src/Protocol/ActivityPub/Transmitter.php | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/src/Protocol/ActivityPub/Transmitter.php b/src/Protocol/ActivityPub/Transmitter.php
index 9f5d17c90e..b64e746e79 100644
--- a/src/Protocol/ActivityPub/Transmitter.php
+++ b/src/Protocol/ActivityPub/Transmitter.php
@@ -1034,7 +1034,7 @@ class Transmitter
 		// Simplify image codes
 		$body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $item['body']);
 
-		// Grab all pictures and create attachments out of them
+		// Grab all pictures without alternative descriptions and create attachments out of them
 		if (preg_match_all("/\[img\]([^\[\]]*)\[\/img\]/Usi", $body, $pictures)) {
 			foreach ($pictures[1] as $picture) {
 				$imgdata = Image::getInfoFromURL($picture);
@@ -1047,6 +1047,19 @@ class Transmitter
 			}
 		}
 
+		// Grab all pictures with alternative description and create attachments out of them
+		if (preg_match_all("/\[img=([^\[\]]*)\]([^\[\]]*)\[\/img\]/Usi", $body, $pictures, PREG_SET_ORDER)) {
+			foreach ($pictures as $picture) {
+				$imgdata = Image::getInfoFromURL($picture[1]);
+				if ($imgdata) {
+					$attachments[] = ['type' => 'Document',
+						'mediaType' => $imgdata['mime'],
+						'url' => $picture[1],
+						'name' => $picture[2]];
+				}
+			}
+		}
+
 		return $attachments;
 	}