From 98570392423e22757c80a52deee7cb452b2ee05a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Manuel=20H=C3=BCsers?= <aur@huesers.de>
Date: Fri, 2 Jun 2023 21:52:11 +0200
Subject: [PATCH] upgpkg: discord-electron 0.0.27-5

Include rudimentary patch to allow Krisp noise suppression support
---
 .SRCINFO                 |  5 +++--
 PKGBUILD                 | 11 +++++++----
 discord-electron.install | 13 +++++++++++--
 discord-launcher.sh      | 12 +++++++++++-
 4 files changed, 32 insertions(+), 9 deletions(-)

diff --git a/.SRCINFO b/.SRCINFO
index 734d978..6e84783 100644
--- a/.SRCINFO
+++ b/.SRCINFO
@@ -1,7 +1,7 @@
 pkgbase = discord-electron
 	pkgdesc = Discord using system provided electron (v22) for increased security and performance
 	pkgver = 0.0.27
-	pkgrel = 4
+	pkgrel = 5
 	url = https://discord.com
 	install = discord-electron.install
 	arch = x86_64
@@ -13,12 +13,13 @@ pkgbase = discord-electron
 	depends = libxss
 	optdepends = libpulse: Pulseaudio support
 	optdepends = xdg-utils: Open files
+	optdepends = rizin: Allow patching Krisp support
 	provides = discord
 	conflicts = discord
 	options = !strip
 	source = https://dl.discordapp.net/apps/linux/0.0.27/discord-0.0.27.tar.gz
 	source = discord-launcher.sh
 	sha512sums = 285a0119b4740402a3fa94d3679a52bc8d883413ee32187e90087960a4d34aaf316788d2708bbccafe3f995c2b99767b45bc4b7c731704ef887a8de1b3d3926f
-	sha512sums = 6337d1f40c9ac97f180862ed0bcf1ec6fb6d4ecf3cb215369550768a4a3600a9546c43f467855a77e95b0f314348a833de40f4284b5b8924d101b4a456b073f5
+	sha512sums = 1da218eb240901ed48c392c154d061b02024daeb02ee7d991cdbc97ecba30a6f06af25abb602880872d89dcc63a8cd4d149c12414086b081035938deff8fe26d
 
 pkgname = discord-electron
diff --git a/PKGBUILD b/PKGBUILD
index 7cbd556..ac3a63d 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -15,7 +15,7 @@ pkgname=discord-electron
 _pkgname=discord
 _electron=22
 pkgver=0.0.27
-pkgrel=4
+pkgrel=5
 pkgdesc="Discord using system provided electron (v${_electron}) for increased security and performance"
 arch=('x86_64')
 provides=("${_pkgname}")
@@ -29,15 +29,18 @@ makedepends=('asar' 'curl' 'python-html2text')
 optdepends=(
 	'libpulse: Pulseaudio support'
 	'xdg-utils: Open files'
+	'rizin: Allow patching Krisp support'
 )
 source=("https://dl.discordapp.net/apps/linux/${pkgver}/discord-${pkgver}.tar.gz"
 	'discord-launcher.sh')
 sha512sums=('285a0119b4740402a3fa94d3679a52bc8d883413ee32187e90087960a4d34aaf316788d2708bbccafe3f995c2b99767b45bc4b7c731704ef887a8de1b3d3926f'
-            '6337d1f40c9ac97f180862ed0bcf1ec6fb6d4ecf3cb215369550768a4a3600a9546c43f467855a77e95b0f314348a833de40f4284b5b8924d101b4a456b073f5')
+            '1da218eb240901ed48c392c154d061b02024daeb02ee7d991cdbc97ecba30a6f06af25abb602880872d89dcc63a8cd4d149c12414086b081035938deff8fe26d')
+
+_krisp_b2sum='592f55259500afc0d7fd334a10d3c1991fae05db870bf12437edc43cf693988195341f2cb827aba333c0e65fb4cb40dccfcc5d6a84dea4a1645f9563505b6496'
 
 prepare() {
-	# prepare launcher and install script
-	sed -i "s|@PKGNAME@|${_pkgname}|;s|@ELECTRON@|${_electron}|" discord-launcher.sh
+	# prepare launcher script
+	sed -i "s|@PKGNAME@|${_pkgname}|g;s|@PKGVER@|${_pkgver}|g;s|@ELECTRON@|${_electron}|g;s|@KRISPB2@|${_krisp_b2sum}|g" discord-launcher.sh
 
 	# fix the .desktop file
 	sed -i "s|Exec=.*|Exec=/usr/bin/${_pkgname}|" Discord/$_pkgname.desktop
diff --git a/discord-electron.install b/discord-electron.install
index 797b262..5516bf2 100644
--- a/discord-electron.install
+++ b/discord-electron.install
@@ -1,18 +1,27 @@
 post_upgrade() {
+	# return if old package version is greater than or equal to 0.0.27-5...
+	(( $(vercmp $2 '0.0.27-5') >= 0 )) && return
+
+	cat <<EOF
+==> The launch script will now patch Krisp noise suppression support
+    if 'rizin' is installed. Restart your Discord client after update
+    to apply the patch
+EOF
+
 	# return if old package version is greater than or equal to 0.0.27-2...
 	(( $(vercmp $2 '0.0.27-2') >= 0 )) && return
 
 	cat <<EOF
 ==> You can now add or uncomment additional Electron flags in
     '~/.config/discord-flags.conf' (if XDG_CONFIG_HOME is not set)
-
 EOF
 }
 
 post_install() {
 	cat <<EOF
+==> For Krisp noise suppression support consider installing 'rizin'. Restart
+    your Discord client after installation or update to apply the patch
 ==> In case of performance problems consider adding or uncommenting Electron
     flags in '~/.config/discord-flags.conf' (if XDG_CONFIG_HOME is not set)
-
 EOF
 }
diff --git a/discord-launcher.sh b/discord-launcher.sh
index 42e6f82..7e50f72 100644
--- a/discord-launcher.sh
+++ b/discord-launcher.sh
@@ -3,12 +3,22 @@
 set -euo pipefail
 
 flags_file="${XDG_CONFIG_HOME:-$HOME/.config}/@PKGNAME@-flags.conf"
+krisp_bin="${XDG_CONFIG_HOME:-$HOME/.config}/@PKGNAME@/@PKGVER@/modules/@PKGNAME@_krisp/@PKGNAME@_krisp.node"
 
 declare -a flags
 
+if hash rizin &> /dev/null; then
+	# Patch Krisp binary to ignore signature check
+	if [[ -f "${krisp_bin}" && $(b2sum "${krisp_bin}" | head -c 128) == @KRISPB2@ ]]; then
+		addr=$(rz-find -x '4889dfe8........4889dfe8' "${krisp_bin}" | head -n1)
+		rizin -q -w -c "s $addr + 0x12 ; wao nop" "${krisp_bin}" &> /dev/null
+	fi
+fi
+
 if [[ -f "${flags_file}" ]]; then
-	grep -q '\--ignore-gpu-blacklist' "${flags_file}" && \
+	if grep -q '\--ignore-gpu-blacklist' "${flags_file}"; then
 		sed -i "s|--ignore-gpu-blacklist|--ignore-gpu-blocklist|" "${flags_file}"
+	fi
 	mapfile -t < "${flags_file}"
 else
 	cat > "${flags_file}" <<EOF