discord-electron-openasar/.SRCINFO

@@ -0,0 +1,32 @@
+pkgbase = discord-electron-openasar
+	pkgdesc = Discord packaged with OpenAsar using system provided electron (v39) for increased security and performance
+	pkgver = 0.0.121+847
+	pkgrel = 1
+	url = https://discord.com
+	install = discord-electron-openasar.install
+	arch = x86_64
+	license = custom
+	makedepends = git
+	makedepends = asar
+	makedepends = nodejs
+	makedepends = curl
+	depends = electron39
+	depends = libxss
+	depends = unzip
+	optdepends = libpulse: Pulseaudio support
+	optdepends = xdg-utils: Open files
+	optdepends = python-pyelftools: Required for Krisp patcher
+	optdepends = python-capstone: Required for Krisp patcher
+	provides = discord
+	conflicts = discord
+	options = !strip
+	source = https://dl.discordapp.net/apps/linux/0.0.121/discord-0.0.121.tar.gz
+	source = discord-launcher.sh
+	source = krisp-patcher.py
+	source = git+https://github.com/goosemod/openasar.git#commit=5b259e4efaf9eee69aeca7b2ef153e5bfedc35d0
+	sha512sums = 5e5b5f9c45004174353a10db9625234521f373d737f0f0dcc3f45d9cdf02439ad549fef7e46d09abb37c9748e8411403eeaa53ac316c89380edb929b01746c66
+	sha512sums = 618c89fdd90d6826dd44c3d5973428fb68b1836f1198a356e936da0b78c18b748d522ff7ecee15752d590dcd137ef16c4370ac6325c5b5f0aced4b5cce36b825
+	sha512sums = 42cef68c1f7d574b4fbe859a4dc616e8994c7d16f62bcae3ff1f88e1edc58ac37b39c238d7defa9c97ceda417fcd6224cf0a0fd2608b8d18d0877e3c1befa59c
+	sha512sums = 86e296524f831b450620e4c0abb576f5b370982f70951beafdc821bcbce7db4b7b000bb2a7ce29516c209c2590fb428e8fed9450387ec37918dd79fc0a0a85e4
+
+pkgname = discord-electron-openasar

discord-electron-openasar/PKGBUILD

@@ -0,0 +1,92 @@
+# Maintainer: Manuel Hüsers <aur@huesers.de>
+
+pkgname=discord-electron-openasar
+_pkgname=discord
+pkgver=0.0.121+847
+_pkgver=${pkgver%%+*}
+pkgrel=1
+_electronver=39
+_electronname="electron${_electronver}"
+pkgdesc="Discord packaged with OpenAsar using system provided electron (v${_electronver}) for increased security and performance"
+arch=('x86_64')
+provides=("${_pkgname}")
+conflicts=("${_pkgname}")
+url='https://discord.com'
+license=('custom')
+options=('!strip')
+install="$pkgname.install"
+depends=("${_electronname}" 'libxss' 'unzip')
+makedepends=('git' 'asar' 'nodejs' 'curl')
+optdepends=(
+	'libpulse: Pulseaudio support'
+	'xdg-utils: Open files'
+	'python-pyelftools: Required for Krisp patcher'
+	'python-capstone: Required for Krisp patcher'
+)
+source=("https://dl.discordapp.net/apps/linux/${_pkgver}/${_pkgname}-${_pkgver}.tar.gz"
+	'discord-launcher.sh'
+	'krisp-patcher.py' # original: https://github.com/sersorrel/sys/blob/main/hm/discord/krisp-patcher.py
+	"git+https://github.com/goosemod/openasar.git#commit=5b259e4efaf9eee69aeca7b2ef153e5bfedc35d0")
+sha512sums=('5e5b5f9c45004174353a10db9625234521f373d737f0f0dcc3f45d9cdf02439ad549fef7e46d09abb37c9748e8411403eeaa53ac316c89380edb929b01746c66'
+            '618c89fdd90d6826dd44c3d5973428fb68b1836f1198a356e936da0b78c18b748d522ff7ecee15752d590dcd137ef16c4370ac6325c5b5f0aced4b5cce36b825'
+            '42cef68c1f7d574b4fbe859a4dc616e8994c7d16f62bcae3ff1f88e1edc58ac37b39c238d7defa9c97ceda417fcd6224cf0a0fd2608b8d18d0877e3c1befa59c'
+            '86e296524f831b450620e4c0abb576f5b370982f70951beafdc821bcbce7db4b7b000bb2a7ce29516c209c2590fb428e8fed9450387ec37918dd79fc0a0a85e4')
+
+# just in case I get the version wrong
+pkgver() {
+	cd "${srcdir}/openasar"
+	printf "%s+%s" "$_pkgver" "$(git rev-list --count HEAD)"
+}
+
+prepare() {
+	# prepare launcher script
+	sed -i -e "s|@PKGNAME@|${_pkgname}|g" \
+		-e "s|@PKGVER@|${_pkgver}|g" \
+		-e "s|@ELECTRON@|${_electronname}|g" \
+		discord-launcher.sh
+
+	# fix the .desktop file
+	sed -i -e "s|Exec=.*|Exec=/usr/bin/${_pkgname}|" ${_pkgname^}/$_pkgname.desktop
+
+	# create the license files
+	curl -o LICENSE.html https://discord.com/terms
+	curl -o OSS-LICENSES.html https://discord.com/licenses
+}
+
+build() {
+	cd "${srcdir}"/openasar
+
+	# pack openasar
+	sed -i -e "s|nightly|nightly-$(git rev-parse HEAD | cut -c 1-7)|" src/index.js
+	sed -i -e "/config.setup = true/a\  config.autoupdate = false;" src/config/index.js
+	sed -i -e "s|process.resourcesPath|'/usr/lib/${_pkgname}/resources'|" src/utils/buildInfo.js
+	sed -i -e "s|^Exec=\${exec}$|Exec=/usr/bin/${_pkgname}|" \
+		-e "s|^Name=\${basename(exec)}$|Name=${_pkgname^}|" src/autoStart.js
+	node scripts/strip.js
+	asar p src app.asar
+}
+
+package() {
+	# create necessary directories
+	install -d "${pkgdir}"/usr/lib/$_pkgname
+
+	# copy relevant data
+	cp -r ${_pkgname^}/resources "${pkgdir}"/usr/lib/$_pkgname/
+
+	# intall icon and desktop file
+	install -Dm 644 ${_pkgname^}/$_pkgname.png "${pkgdir}"/usr/share/pixmaps/$_pkgname.png
+	install -Dm 644 ${_pkgname^}/$_pkgname.desktop "${pkgdir}"/usr/share/applications/$_pkgname.desktop
+
+	# overwrite Discord asar
+	install -Dm 644 openasar/app.asar "${pkgdir}"/usr/lib/$_pkgname/resources/
+
+	# install the launch script
+	install -Dm 755 discord-launcher.sh "${pkgdir}"/usr/bin/$_pkgname
+
+	# install krisp patcher
+	install -Dm 644 krisp-patcher.py "${pkgdir}"/usr/lib/$_pkgname/
+
+	# install licenses
+	install -Dm 644 LICENSE.html "${pkgdir}"/usr/share/licenses/$_pkgname/LICENSE.html
+	install -Dm 644 OSS-LICENSES.html "${pkgdir}"/usr/share/licenses/$_pkgname/OSS-LICENSES.html
+}

discord-electron-openasar/discord-electron-openasar.install

@@ -0,0 +1,43 @@
+post_upgrade() {
+	# return if old package version is greater than or equal to 0.0.55+827-1...
+	(( $(vercmp $2 '0.0.55+827-1') >= 0 )) && return
+
+	cat <<EOF
+==> Instead of using 'rizin' to patch Krisp support a patcher written in Python
+    is now used. Consider installing the necessary optional dependencies to use
+    this feature.
+EOF
+
+	# return if old package version is greater than or equal to 0.0.39+824-2...
+	(( $(vercmp $2 '0.0.39+824-2') >= 0 )) && return
+
+	cat <<EOF
+==> In order to patch Krisp noise suppression support set 'PATCH_KRISP=true'
+    in '~/.config/discord.conf' in addition to having 'rizin' installed.
+EOF
+
+	# return if old package version is greater than or equal to 0.0.27+809-5...
+	(( $(vercmp $2 '0.0.27+809-5') >= 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+809-2...
+	(( $(vercmp $2 '0.0.27+809-2') >= 0 )) && return
+
+	cat <<EOF
+==> You can now set additional Electron flags in '~/.config/discord-flags.conf'.
+EOF
+}
+
+post_install() {
+	cat <<EOF
+==> For Krisp noise suppression support consider installing the necessary optional
+    dependencies and setting 'PATCH_KRISP=true' in '~/.config/discord.conf'.
+    Restart your Discord client afterwards to apply the patch.
+==> Additional Electron flags can be set in '~/.config/discord-flags.conf'.
+EOF
+}

discord-electron-openasar/discord-launcher.sh

@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+declare -a flags
+declare -l PATCH_KRISP
+
+[[ -r "${XDG_CONFIG_HOME:-$HOME/.config}/@PKGNAME@.conf" ]] && source "${XDG_CONFIG_HOME:-$HOME/.config}/@PKGNAME@.conf"
+
+flags_file="${XDG_CONFIG_HOME:-$HOME/.config}/@PKGNAME@-flags.conf"
+krisp_bin="${DISCORD_USER_DATA_DIR:-${XDG_CONFIG_HOME:-$HOME/.config}/@PKGNAME@}/@PKGVER@/modules/@PKGNAME@_krisp/@PKGNAME@_krisp.node"
+
+if [[ "${PATCH_KRISP:-}" == true ]] && [[ -w "${krisp_bin}" ]]; then
+	if hash python &> /dev/null && python -c 'import capstone; import elftools' &> /dev/null; then
+		# Patch Krisp binary to ignore signature check
+		echo -n 'Running Krisp patcher... '
+		python /usr/lib/@PKGNAME@/krisp-patcher.py "${krisp_bin}"
+	fi
+fi
+
+if [[ -r "${flags_file}" ]]; then
+	# Replacing because old flag does not work
+	if [[ -w "${flags_file}" ]] && grep -q '\--ignore-gpu-blacklist' "${flags_file}"; then
+		sed -i 's|--ignore-gpu-blacklist|--ignore-gpu-blocklist|' "${flags_file}"
+	fi
+	mapfile -t < "${flags_file}"
+fi
+
+for line in "${MAPFILE[@]}"; do
+	if [[ ! "${line}" =~ ^[[:space:]]*#.* ]] && [[ -n "${line}" ]]; then
+		flags+=("${line}")
+	fi
+done
+
+unset flags_file krisp_bin
+
+
+exec /usr/lib/@ELECTRON@/electron \
+	/usr/lib/@PKGNAME@/resources/app.asar \
+	"${flags[@]}" "$@"

discord-electron-openasar/krisp-patcher.py

@@ -0,0 +1,85 @@
+import sys
+import shutil
+
+from elftools.elf.elffile import ELFFile
+from capstone import *
+from capstone.x86 import *
+
+if len(sys.argv) < 2:
+    print(f"Usage: {sys.argv[0]} [path to discord_krisp.node]")
+    # "Unix programs generally use 2 for command line syntax errors and 1 for all other kind of errors."
+    sys.exit(2)
+
+executable = sys.argv[1]
+
+elf = ELFFile(open(executable, "rb"))
+symtab = elf.get_section_by_name('.symtab')
+
+krisp_initialize_address = symtab.get_symbol_by_name("_ZN7discordL17DoKrispInitializeEv")[0].entry.st_value
+isSignedByDiscord_address = symtab.get_symbol_by_name("_ZN7discord4util17IsSignedByDiscordERKNSt4__Cr12basic_stringIcNS1_11char_traitsIcEENS1_9allocatorIcEEEE")[0].entry.st_value
+
+text = elf.get_section_by_name('.text')
+text_start = text['sh_addr']
+text_start_file = text['sh_offset']
+# This seems to always be zero (.text starts at the right offset in the file). Do it just in case?
+address_to_file = text_start_file - text_start
+
+# Done with the ELF now.
+# elf.close()
+
+krisp_initialize_offset = krisp_initialize_address - address_to_file
+isSignedByDiscord_offset = krisp_initialize_address - address_to_file
+
+f = open(executable, "rb")
+f.seek(krisp_initialize_offset)
+krisp_initialize = f.read(96)
+f.close()
+
+# States
+found_issigned_by_discord_call = False
+found_issigned_by_discord_test = False
+found_issigned_by_discord_je = False
+found_already_patched = False
+je_location = None
+je_size = 0
+
+# We are looking for a call to IsSignedByDiscord, followed by a test, followed by a je.
+# Then we replace the je with nops.
+
+md = Cs(CS_ARCH_X86, CS_MODE_64)
+md.detail = True
+for i in md.disasm(krisp_initialize, krisp_initialize_address):
+    if i.id == X86_INS_CALL:
+        if i.operands[0].type == X86_OP_IMM:
+            if i.operands[0].imm == isSignedByDiscord_address:
+                found_issigned_by_discord_call = True
+
+    if i.id == X86_INS_TEST:
+        if found_issigned_by_discord_call:
+            found_issigned_by_discord_test = True
+
+    if i.id == X86_INS_JE:
+        if found_issigned_by_discord_test:
+            found_issigned_by_discord_je = True
+            je_location = i.address
+            je_size = len(i.bytes)
+            break
+
+    if i.id == X86_INS_NOP:
+        if found_issigned_by_discord_test:
+            found_already_patched = True
+            break
+
+if je_location:
+    print(f"Found patch location: 0x{je_location:x}")
+
+    shutil.copyfile(executable, executable + ".orig")
+    f = open(executable, 'rb+')
+    f.seek(je_location - address_to_file)
+    f.write(b'\x90' * je_size)   # je can be larger than 2 bytes given a large enough displacement :(
+    f.close()
+else:
+    if found_already_patched:
+        print("Couldn't find patch location - already patched.")
+    else:
+        print("Couldn't find patch location - review manually. Sorry.")

discord-electron-openasar/update-package.sh

@@ -0,0 +1,57 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+readonly all_off="$(tput sgr0)"
+readonly bold="${all_off}$(tput bold)"
+readonly white="${bold}$(tput setaf 7)"
+readonly blue="${bold}$(tput setaf 4)"
+readonly red="${bold}$(tput setaf 1)"
+
+msg() {
+	printf "${blue}::${white} $1${all_off}\n"
+}
+
+error() {
+	printf "${red}::${white} $1${all_off}\n"
+}
+
+msgbegin() {
+	printf "${blue}::${white} $1"
+}
+
+msgend() {
+	printf "$1${all_off}\n"
+}
+
+
+readonly krisp_zip='discord_krisp-1.zip'
+readonly krisp_bin='discord_krisp.node'
+
+# head to directory of this script
+cd $(dirname "$0")
+
+# update package to version used in PKGBUILD
+source PKGBUILD
+
+msg "Running updpkgsums (Updating checksums)"
+updpkgsums
+
+msg "Running mksrcinfo (Updating SRCINFO file)"
+makepkg --printsrcinfo > .SRCINFO
+
+msg "Getting Krisp module"
+curl -O "https://dl.discordapp.net/apps/linux/${_pkgver:-${pkgver}}/modules/${krisp_zip}"
+unzip "${krisp_zip}" "${krisp_bin}"
+
+msg "Checking if Krisp module is patchable (watch output)"
+python krisp-patcher.py "${krisp_bin}"
+
+#msg "Updating Krisp module checksum"
+#readonly chcksm=$(b2sum "${krisp_bin}.orig" | head -c 128)
+#sed -i "s/^_krisp_b2sum='.*'$/_krisp_b2sum='${chcksm}'/" PKGBUILD
+
+msgbegin "Cleaning up... "
+rm -f "${krisp_zip}" "${krisp_bin}" "${krisp_bin}.orig"
+
+msgend "Done"

discord-electron/.SRCINFO

@@ -0,0 +1,27 @@
+pkgbase = discord-electron
+	pkgdesc = Discord using system provided electron (v39) for increased security and performance
+	pkgver = 0.0.121
+	pkgrel = 1
+	url = https://discord.com
+	install = discord-electron.install
+	arch = x86_64
+	license = custom
+	makedepends = asar
+	makedepends = curl
+	depends = electron39
+	depends = libxss
+	optdepends = libpulse: Pulseaudio support
+	optdepends = xdg-utils: Open files
+	optdepends = python-pyelftools: Required for Krisp patcher
+	optdepends = python-capstone: Required for Krisp patcher
+	provides = discord
+	conflicts = discord
+	options = !strip
+	source = https://dl.discordapp.net/apps/linux/0.0.121/discord-0.0.121.tar.gz
+	source = discord-launcher.sh
+	source = krisp-patcher.py
+	sha512sums = 5e5b5f9c45004174353a10db9625234521f373d737f0f0dcc3f45d9cdf02439ad549fef7e46d09abb37c9748e8411403eeaa53ac316c89380edb929b01746c66
+	sha512sums = 618c89fdd90d6826dd44c3d5973428fb68b1836f1198a356e936da0b78c18b748d522ff7ecee15752d590dcd137ef16c4370ac6325c5b5f0aced4b5cce36b825
+	sha512sums = 42cef68c1f7d574b4fbe859a4dc616e8994c7d16f62bcae3ff1f88e1edc58ac37b39c238d7defa9c97ceda417fcd6224cf0a0fd2608b8d18d0877e3c1befa59c
+
+pkgname = discord-electron

discord-electron/PKGBUILD

@@ -0,0 +1,82 @@
+pkgname=discord-electron
+_pkgname=discord
+pkgver=0.0.121
+pkgrel=1
+_electronver=39
+_electronname="electron${_electronver}"
+pkgdesc="Discord using system provided electron (v${_electronver}) for increased security and performance"
+arch=('x86_64')
+provides=("${_pkgname}")
+conflicts=("${_pkgname}")
+url='https://discord.com'
+license=('custom')
+options=('!strip')
+install="$pkgname.install"
+depends=("${_electronname}" 'libxss')
+makedepends=('asar' 'curl')
+optdepends=(
+	'libpulse: Pulseaudio support'
+	'xdg-utils: Open files'
+	'python-pyelftools: Required for Krisp patcher'
+	'python-capstone: Required for Krisp patcher'
+)
+source=("https://dl.discordapp.net/apps/linux/${pkgver}/${_pkgname}-${pkgver}.tar.gz"
+	'discord-launcher.sh'
+	'krisp-patcher.py') # original: https://github.com/sersorrel/sys/blob/main/hm/discord/krisp-patcher.py
+sha512sums=('5e5b5f9c45004174353a10db9625234521f373d737f0f0dcc3f45d9cdf02439ad549fef7e46d09abb37c9748e8411403eeaa53ac316c89380edb929b01746c66'
+            '618c89fdd90d6826dd44c3d5973428fb68b1836f1198a356e936da0b78c18b748d522ff7ecee15752d590dcd137ef16c4370ac6325c5b5f0aced4b5cce36b825'
+            '42cef68c1f7d574b4fbe859a4dc616e8994c7d16f62bcae3ff1f88e1edc58ac37b39c238d7defa9c97ceda417fcd6224cf0a0fd2608b8d18d0877e3c1befa59c')
+
+prepare() {
+	# prepare launcher script
+	sed -i -e "s|@PKGNAME@|${_pkgname}|g" \
+		-e "s|@PKGVER@|${pkgver}|g" \
+		-e "s|@ELECTRON@|${_electronname}|g" \
+		discord-launcher.sh
+
+	# fix the .desktop file
+	sed -i -e "s|Exec=.*|Exec=/usr/bin/${_pkgname}|" ${_pkgname^}/$_pkgname.desktop
+
+	# create the license files
+	curl -o LICENSE.html https://discord.com/terms
+	curl -o OSS-LICENSES.html https://discord.com/licenses
+}
+
+build() {
+	cd "${srcdir}"/${_pkgname^}
+
+	# use system electron
+	asar e resources/app.asar resources/app
+	rm resources/app.asar
+	sed -i -e "/resourcesPath = .*;$/d" -e "s|return resourcesPath|return '/usr/lib/${_pkgname}/resources'|" resources/app/common/paths.js
+	sed -i -e "s|process.resourcesPath|'/usr/lib/${_pkgname}/resources'|" resources/app/app_bootstrap/buildInfo.js
+	sed -i -e "/^const appName/d" -e "/^const exePath/d" -e "/^const exeDir/d" -e "/^const iconPath/d" \
+		-e "s|^Exec=\${exePath}$|Exec=/usr/bin/${_pkgname}|" \
+		-e "s|^Name=\${appName}$|Name=${_pkgname^}|" \
+		-e "s|^Icon=\${iconPath}$|Icon=/usr/share/pixmaps/${_pkgname}.png|" \
+		resources/app/app_bootstrap/autoStart/linux.js
+	asar p resources/app resources/app.asar
+	rm -rf resources/app
+}
+
+package() {
+	# create necessary directories
+	install -d "${pkgdir}"/usr/lib/$_pkgname
+
+	# copy relevant data
+	cp -r ${_pkgname^}/resources "${pkgdir}"/usr/lib/$_pkgname/
+
+	# intall icon and desktop file
+	install -Dm 644 ${_pkgname^}/$_pkgname.png "${pkgdir}"/usr/share/pixmaps/$_pkgname.png
+	install -Dm 644 ${_pkgname^}/$_pkgname.desktop "${pkgdir}"/usr/share/applications/$_pkgname.desktop
+
+	# install the launch script
+	install -Dm 755 discord-launcher.sh "${pkgdir}"/usr/bin/$_pkgname
+
+	# install krisp patcher
+	install -Dm 644 krisp-patcher.py "${pkgdir}"/usr/lib/$_pkgname/
+
+	# install licenses
+	install -Dm 644 LICENSE.html "${pkgdir}"/usr/share/licenses/$_pkgname/LICENSE.html
+	install -Dm 644 OSS-LICENSES.html "${pkgdir}"/usr/share/licenses/$_pkgname/OSS-LICENSES.html
+}

discord-electron/discord-electron.install

@@ -0,0 +1,44 @@
+post_upgrade() {
+	# return if old package version is greater than or equal to 0.0.55-1...
+	(( $(vercmp $2 '0.0.55-1') >= 0 )) && return
+
+	cat <<EOF
+==> Instead of using 'rizin' to patch Krisp support a patcher written in Python
+    is now used. Consider installing the necessary optional dependencies to use
+    this feature.
+EOF
+
+	# return if old package version is greater than or equal to 0.0.39-2...
+	(( $(vercmp $2 '0.0.39-2') >= 0 )) && return
+
+	cat <<EOF
+==> In order to patch Krisp noise suppression support set 'PATCH_KRISP=true'
+    in '~/.config/discord.conf' in addition to having 'rizin' installed.
+EOF
+
+	# 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 set additional Electron flags in '~/.config/discord-flags.conf'.
+EOF
+}
+
+post_install() {
+	cat <<EOF
+==> For Krisp noise suppression support consider installing the necessary optional
+    dependencies and setting 'PATCH_KRISP=true' in '~/.config/discord.conf'.
+    Restart your Discord client afterwards to apply the patch.
+==> In case of performance problems consider setting additional flags
+    in '~/.config/discord-flags.conf'.
+EOF
+}

discord-electron/discord-launcher.sh

@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+declare -a flags
+declare -l PATCH_KRISP
+
+[[ -r "${XDG_CONFIG_HOME:-$HOME/.config}/@PKGNAME@.conf" ]] && source "${XDG_CONFIG_HOME:-$HOME/.config}/@PKGNAME@.conf"
+
+flags_file="${XDG_CONFIG_HOME:-$HOME/.config}/@PKGNAME@-flags.conf"
+krisp_bin="${DISCORD_USER_DATA_DIR:-${XDG_CONFIG_HOME:-$HOME/.config}/@PKGNAME@}/@PKGVER@/modules/@PKGNAME@_krisp/@PKGNAME@_krisp.node"
+
+if [[ "${PATCH_KRISP:-}" == true ]] && [[ -w "${krisp_bin}" ]]; then
+	if hash python &> /dev/null && python -c 'import capstone; import elftools' &> /dev/null; then
+		# Patch Krisp binary to ignore signature check
+		echo -n 'Running Krisp patcher... '
+		python /usr/lib/@PKGNAME@/krisp-patcher.py "${krisp_bin}"
+	fi
+fi
+
+if [[ -r "${flags_file}" ]]; then
+	# Replacing because old flag does not work
+	if [[ -w "${flags_file}" ]] && grep -q '\--ignore-gpu-blacklist' "${flags_file}"; then
+		sed -i 's|--ignore-gpu-blacklist|--ignore-gpu-blocklist|' "${flags_file}"
+	fi
+	mapfile -t < "${flags_file}"
+fi
+
+for line in "${MAPFILE[@]}"; do
+	if [[ ! "${line}" =~ ^[[:space:]]*#.* ]] && [[ -n "${line}" ]]; then
+		flags+=("${line}")
+	fi
+done
+
+unset flags_file krisp_bin
+
+
+exec /usr/lib/@ELECTRON@/electron \
+	/usr/lib/@PKGNAME@/resources/app.asar \
+	"${flags[@]}" "$@"

discord-electron/krisp-patcher.py

@@ -0,0 +1,85 @@
+import sys
+import shutil
+
+from elftools.elf.elffile import ELFFile
+from capstone import *
+from capstone.x86 import *
+
+if len(sys.argv) < 2:
+    print(f"Usage: {sys.argv[0]} [path to discord_krisp.node]")
+    # "Unix programs generally use 2 for command line syntax errors and 1 for all other kind of errors."
+    sys.exit(2)
+
+executable = sys.argv[1]
+
+elf = ELFFile(open(executable, "rb"))
+symtab = elf.get_section_by_name('.symtab')
+
+krisp_initialize_address = symtab.get_symbol_by_name("_ZN7discordL17DoKrispInitializeEv")[0].entry.st_value
+isSignedByDiscord_address = symtab.get_symbol_by_name("_ZN7discord4util17IsSignedByDiscordERKNSt4__Cr12basic_stringIcNS1_11char_traitsIcEENS1_9allocatorIcEEEE")[0].entry.st_value
+
+text = elf.get_section_by_name('.text')
+text_start = text['sh_addr']
+text_start_file = text['sh_offset']
+# This seems to always be zero (.text starts at the right offset in the file). Do it just in case?
+address_to_file = text_start_file - text_start
+
+# Done with the ELF now.
+# elf.close()
+
+krisp_initialize_offset = krisp_initialize_address - address_to_file
+isSignedByDiscord_offset = krisp_initialize_address - address_to_file
+
+f = open(executable, "rb")
+f.seek(krisp_initialize_offset)
+krisp_initialize = f.read(96)
+f.close()
+
+# States
+found_issigned_by_discord_call = False
+found_issigned_by_discord_test = False
+found_issigned_by_discord_je = False
+found_already_patched = False
+je_location = None
+je_size = 0
+
+# We are looking for a call to IsSignedByDiscord, followed by a test, followed by a je.
+# Then we replace the je with nops.
+
+md = Cs(CS_ARCH_X86, CS_MODE_64)
+md.detail = True
+for i in md.disasm(krisp_initialize, krisp_initialize_address):
+    if i.id == X86_INS_CALL:
+        if i.operands[0].type == X86_OP_IMM:
+            if i.operands[0].imm == isSignedByDiscord_address:
+                found_issigned_by_discord_call = True
+
+    if i.id == X86_INS_TEST:
+        if found_issigned_by_discord_call:
+            found_issigned_by_discord_test = True
+
+    if i.id == X86_INS_JE:
+        if found_issigned_by_discord_test:
+            found_issigned_by_discord_je = True
+            je_location = i.address
+            je_size = len(i.bytes)
+            break
+
+    if i.id == X86_INS_NOP:
+        if found_issigned_by_discord_test:
+            found_already_patched = True
+            break
+
+if je_location:
+    print(f"Found patch location: 0x{je_location:x}")
+
+    shutil.copyfile(executable, executable + ".orig")
+    f = open(executable, 'rb+')
+    f.seek(je_location - address_to_file)
+    f.write(b'\x90' * je_size)   # je can be larger than 2 bytes given a large enough displacement :(
+    f.close()
+else:
+    if found_already_patched:
+        print("Couldn't find patch location - already patched.")
+    else:
+        print("Couldn't find patch location - review manually. Sorry.")

discord-electron/update-package.sh

@@ -0,0 +1,57 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+readonly all_off="$(tput sgr0)"
+readonly bold="${all_off}$(tput bold)"
+readonly white="${bold}$(tput setaf 7)"
+readonly blue="${bold}$(tput setaf 4)"
+readonly red="${bold}$(tput setaf 1)"
+
+msg() {
+	printf "${blue}::${white} $1${all_off}\n"
+}
+
+error() {
+	printf "${red}::${white} $1${all_off}\n"
+}
+
+msgbegin() {
+	printf "${blue}::${white} $1"
+}
+
+msgend() {
+	printf "$1${all_off}\n"
+}
+
+
+readonly krisp_zip='discord_krisp-1.zip'
+readonly krisp_bin='discord_krisp.node'
+
+# head to directory of this script
+cd $(dirname "$0")
+
+# update package to version used in PKGBUILD
+source PKGBUILD
+
+msg "Running updpkgsums (Updating checksums)"
+updpkgsums
+
+msg "Running mksrcinfo (Updating SRCINFO file)"
+makepkg --printsrcinfo > .SRCINFO
+
+msg "Getting Krisp module"
+curl -O "https://dl.discordapp.net/apps/linux/${_pkgver:-${pkgver}}/modules/${krisp_zip}"
+unzip "${krisp_zip}" "${krisp_bin}"
+
+msg "Checking if Krisp module is patchable (watch output)"
+python krisp-patcher.py "${krisp_bin}"
+
+#msg "Updating Krisp module checksum"
+#readonly chcksm=$(b2sum "${krisp_bin}.orig" | head -c 128)
+#sed -i "s/^_krisp_b2sum='.*'$/_krisp_b2sum='${chcksm}'/" PKGBUILD
+
+msgbegin "Cleaning up... "
+rm -f "${krisp_zip}" "${krisp_bin}" "${krisp_bin}.orig"
+
+msgend "Done"