From 5002f3046a0b23f77405080f65f8e22c55269565 Mon Sep 17 00:00:00 2001
From: Cadence Ember <cadence@disroot.org>
Date: Fri, 13 Feb 2026 20:27:38 +1300
Subject: [PATCH] Convert emojihax to real emoji

---
 src/d2m/converters/message-to-event.js      |  5 ++++
 src/d2m/converters/message-to-event.test.js | 12 ++++++++
 test/data.js                                | 31 +++++++++++++++++++++
 test/ooye-test-data.sql                     |  3 +-
 4 files changed, 50 insertions(+), 1 deletion(-)

diff --git a/src/d2m/converters/message-to-event.js b/src/d2m/converters/message-to-event.js
index 8f7d0ee..7f77b81 100644
--- a/src/d2m/converters/message-to-event.js
+++ b/src/d2m/converters/message-to-event.js
@@ -757,6 +757,11 @@ async function messageToEvent(message, guild, options = {}, di) {
 			}
 		}
 
+		// Scan the content for emojihax and replace them with real emojis
+		content = content.replaceAll(/\[([a-zA-Z0-9_-]{2,32})(?:~[0-9]+)?\]\(https:\/\/cdn\.discordapp\.com\/emojis\/([0-9]+)\.[^ \n)`]+\)/g, (_, name, id) => {
+			return `<:${name}:${id}>`
+		})
+
 		const {body, html} = await transformContent(content)
 		await addTextEvent(body, html, msgtype)
 	}
diff --git a/src/d2m/converters/message-to-event.test.js b/src/d2m/converters/message-to-event.test.js
index 84cc1e0..1a73aea 100644
--- a/src/d2m/converters/message-to-event.test.js
+++ b/src/d2m/converters/message-to-event.test.js
@@ -1171,6 +1171,18 @@ test("message2event: emoji that hasn't been registered yet", async t => {
 	}])
 })
 
+test("message2event: emojihax", async t => {
+	const events = await messageToEvent(data.message.emojihax, data.guild.general, {})
+	t.deepEqual(events, [{
+		$type: "m.room.message",
+		"m.mentions": {},
+		msgtype: "m.text",
+		body: "I only violate the don't modify our console part of terms of service :troll:",
+		format: "org.matrix.custom.html",
+		formatted_body: `I only violate the don't modify our console part of terms of service <img data-mx-emoticon height="32" src="mxc://cadence.moe/bvVJFgOIyNcAknKCbmaHDktG" title=":troll:" alt=":troll:">`
+	}])
+})
+
 test("message2event: emoji triple long name", async t => {
 	const events = await messageToEvent(data.message.emoji_triple_long_name, data.guild.general, {})
 	t.deepEqual(events, [{
diff --git a/test/data.js b/test/data.js
index eef3a50..6a53cb0 100644
--- a/test/data.js
+++ b/test/data.js
@@ -3219,6 +3219,37 @@ module.exports = {
 			flags: 0,
 			components: []
 		},
+		emojihax: {
+			id: "1126733830494093453",
+			type: 0,
+			content: "I only violate the don't modify our console part of terms of service [troll~1](https://cdn.discordapp.com/emojis/1254940125948022915.webp?size=48&name=troll%7E1&lossless=true)",
+			channel_id: "112760669178241024",
+			author: {
+				id: "111604486476181504",
+				username: "kyuugryphon",
+				avatar: "e4ce31267ca524d19be80e684d4cafa1",
+				discriminator: "0",
+				public_flags: 0,
+				flags: 0,
+				banner: null,
+				accent_color: null,
+				global_name: "KyuuGryphon",
+				avatar_decoration: null,
+				display_name: "KyuuGryphon",
+				banner_color: null
+			},
+			attachments: [],
+			embeds: [],
+			mentions: [],
+			mention_roles: [],
+			pinned: false,
+			mention_everyone: false,
+			tts: false,
+			timestamp: "2023-07-07T04:37:58.892000+00:00",
+			edited_timestamp: null,
+			flags: 0,
+			components: []
+		},
 		emoji_triple_long_name: {
 			id: "1156394116540805170",
 			type: 0,
diff --git a/test/ooye-test-data.sql b/test/ooye-test-data.sql
index 3df5901..1dd9dfe 100644
--- a/test/ooye-test-data.sql
+++ b/test/ooye-test-data.sql
@@ -152,7 +152,8 @@ INSERT INTO file (discord_url, mxc_url) VALUES
 ('https://cdn.discordapp.com/attachments/1099031887500034088/1112476845502365786/voice-message.ogg', 'mxc://cadence.moe/MRRPDggXQMYkrUjTpxQbmcxB'),
 ('https://cdn.discordapp.com/attachments/122155380120748034/1174514575220158545/the.yml', 'mxc://cadence.moe/HnQIYQmmlIKwOQsbFsIGpzPP'),
 ('https://cdn.discordapp.com/attachments/112760669178241024/1296237494987133070/100km.gif', 'mxc://cadence.moe/qDAotmebTfEIfsAIVCEZptLh'),
-('https://cdn.discordapp.com/attachments/123/456/my_enemies.txt', 'mxc://cadence.moe/y89EOTRp2lbeOkgdsEleGOge');
+('https://cdn.discordapp.com/attachments/123/456/my_enemies.txt', 'mxc://cadence.moe/y89EOTRp2lbeOkgdsEleGOge'),
+('https://cdn.discordapp.com/emojis/1254940125948022915.webp', 'mxc://cadence.moe/bvVJFgOIyNcAknKCbmaHDktG');
 
 INSERT INTO emoji (emoji_id, name, animated, mxc_url) VALUES
 ('230201364309868544', 'hippo', 0, 'mxc://cadence.moe/qWmbXeRspZRLPcjseyLmeyXC'),