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discord-appimage-test.sh
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discord-appimage-test.sh
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#!/bin/bash -x
# Author: Syretia
# Name: discord-appimage
# License: MIT
# Description: Builds an AppImage of Discord and keeps it up to date
# Dependencies (only required for building from scratch): ar (binutils), curl
# function to display messages
discord_msg() {
msg_type="$2"
if command -v fltk-dialog > /dev/null; then
fltk-dialog --title="Discord AppImage" --close-label="OK" --center --"$msg_type" --text="$1" --width=500
elif command -v xmessage > /dev/null; then
case "$msg_type" in
error|message) xmessage -buttons OK:0 -center -geometry 500x150 "$1";;
question) xmessage -buttons Yes:0,No:1 -center -geometry 500x150 "$1";;
esac
else
echo "$1"
fi
}
# function to handle exits
discord_error() {
# cleanup leftover files
rm -rf "$HOME"/.cache/"$version_lower"-appimage
# kill progress bar if running
if [[ -n "$progress_pid" ]]; then
kill -SIGTERM "$progress_pid"
fi
# show error
discord_msg "$1" "error"
# exit
exit "$2"
}
# function to find latest debs from Debian's site for building AppImage
discord_dldeps() {
deb_name="$1"
# find latest deb url using grep and head -n 1
latest_deb_url="$(curl -skL "https://packages.debian.org/bullseye/amd64/$deb_name/download" | \
grep '<li>*..*amd64\.deb' | \
cut -f2 -d'"' | \
head -n 1)"
# try again if not found
if [[ -z "$latest_deb_url" ]]; then
echo "Error finding download url for '$deb_name'. Trying again..."
latest_deb_url="$(curl -skL "https://packages.debian.org/bullseye/amd64/$deb_name/download" | \
grep '<li>*..*amd64\.deb' | \
cut -f2 -d'"' | \
head -n 1)"
fi
# exit if not still found
if [[ -z "$latest_deb_url" ]]; then
discord_error "Error getting download URL for '$deb_name'" "1"
return
fi
# download latest deb, try again if fails first time
curl -skL "$latest_deb_url" -o "$HOME"/.cache/"$version_lower"-appimage/debs/"$deb_name".deb || \
curl -skL "$latest_deb_url" -o "$HOME"/.cache/"$version_lower"-appimage/debs/"$deb_name".deb || \
discord_error "Error downloading '$deb_name' from '$latest_deb_url'" "1"
}
# function to extract debs and move them to AppDir folder
discord_extractdebs() {
# mv deb to temp dir so contents can be extracted there
mv "$HOME"/.cache/"$version_lower"-appimage/debs/"$1" "$HOME"/.cache/"$version_lower"-appimage/debs/temp/"$1"
# cd to temp so 'ar' will extract files there
cd "$HOME"/.cache/"$version_lower"-appimage/debs/temp
# extract files from deb
ar x "$HOME"/.cache/"$version_lower"-appimage/debs/temp/"$1" || \
discord_error "Error using 'ar' to extract '$1'" "1"
# extract files from the data tar to AppDir
tar -xf "$HOME"/.cache/"$version_lower"-appimage/debs/temp/data.tar.* -C "$HOME"/.cache/"$version_lower"-appimage/AppDir/ || \
discord_error "Error using 'tar' to extract data tarball from '$1'" "1"
# remove leftovers
rm -rf "$HOME"/.cache/"$version_lower"-appimage/debs/temp/*
# make sure permissions are correct on all extracted files
chmod -R 755 ~/.cache/"$version_lower"-appimage
}
# function to download and extract dependencies to AppRun dir for building AppImage
discord_setup() {
# create necessary directories
mkdir -p "$HOME"/.cache/"$version_lower"-appimage/debs/temp
mkdir -p "$HOME"/.cache/"$version_lower"-appimage/AppDir/usr/bin
# download discord-appimage.sh script to AppDir bin
curl -skL "https://github.com/simoniz0r/Discord-AppImage/raw/master/discord-appimage-test.sh" \
-o "$HOME"/.cache/"$version_lower"-appimage/AppDir/usr/bin/discord-runner || \
discord_error "Error downloading discord-appimage.sh" "1"
chmod +x "$HOME"/.cache/"$version_lower"-appimage/AppDir/usr/bin/discord-runner
# download fltk-dialog (used for displaying messages)
curl -skL "https://github.com/simoniz0r/Discord-AppImage/raw/master/fltk-dialog" \
-o "$HOME"/.cache/"$version_lower"-appimage/AppDir/usr/bin/fltk-dialog || \
discord_error "Error downloading fltk-dialog" "1"
# make executable
chmod +x "$HOME"/.cache/"$version_lower"-appimage/AppDir/usr/bin/fltk-dialog
# if $discord_build_full set to true, download and extract Discord deb
if [[ "$discord_build_full" == "true" ]]; then
# download Discord deb
curl -skL "$version_url" -o "$HOME"/.cache/"$version_lower"-appimage/debs/discord.deb || \
discord_error "Error downloading $version_upper deb file" "1"
# extract discord deb
discord_extractdebs "discord.deb"
# copy discord.desktop and discord.png to AppDir
cp "$HOME"/.cache/"$version_lower"-appimage/AppDir/usr/share/"$version_lower"/"$version_lower".desktop \
"$HOME"/.cache/"$version_lower"-appimage/AppDir/"$version_lower".desktop
cp "$HOME"/.cache/"$version_lower"-appimage/AppDir/usr/share/"$version_lower"/discord.png \
"$HOME"/.cache/"$version_lower"-appimage/AppDir/"$version_lower".png
else
# else setup dummy .desktop file and icon because appimagetool needs them
echo "[Desktop Entry]" > "$HOME"/.cache/"$version_lower"-appimage/AppDir/discord.desktop
echo 'Name=Discord AppImage Builder' >> "$HOME"/.cache/"$version_lower"-appimage/AppDir/discord.desktop
echo 'Comment=Builds Discord AppImages.' >> "$HOME"/.cache/"$version_lower"-appimage/AppDir/discord.desktop
echo 'GenericName=Internet Messenger' >> "$HOME"/.cache/"$version_lower"-appimage/AppDir/discord.desktop
echo 'Exec=./usr/bin/discord-runner' >> "$HOME"/.cache/"$version_lower"-appimage/AppDir/discord.desktop
echo 'Icon=discord' >> "$HOME"/.cache/"$version_lower"-appimage/AppDir/discord.desktop
echo 'Type=Application' >> "$HOME"/.cache/"$version_lower"-appimage/AppDir/discord.desktop
echo 'StartupNotify=false' >> "$HOME"/.cache/"$version_lower"-appimage/AppDir/discord.desktop
echo 'Categories=Network;' >> "$HOME"/.cache/"$version_lower"-appimage/AppDir/discord.desktop
echo 'Keywords=discord;' >> "$HOME"/.cache/"$version_lower"-appimage/AppDir/discord.desktop
touch "$HOME"/.cache/"$version_lower"-appimage/AppDir/discord.png
fi
# download curl binary
curl -skL "https://github.com/moparisthebest/static-curl/releases/latest/download/curl-amd64" \
-o "$HOME"/.cache/"$version_lower"-appimage/AppDir/usr/bin/curl || \
discord_error "Error downloading curl" "1"
# make executable
chmod +x "$HOME"/.cache/"$version_lower"-appimage/AppDir/usr/bin/curl
# download and extract Discord's deps
if [[ "$discord_build_full" == "true" ]]; then
deps=(binutils binutils-x86-64-linux-gnu libbinutils libctf-nobfd0 libnotify4 libxss1 libxtst6 libayatana-appindicator1 libatomic1)
else
deps=(binutils binutils-x86-64-linux-gnu libbinutils libctf-nobfd0)
fi
for dep in "${deps[@]}"; do
discord_dldeps "$dep"
discord_extractdebs "$dep.deb"
done
}
# function to build AppImage
discord_buildappimage() {
if [[ -z "$save_dir" ]]; then
# pick dir to save AppImage to
discord_msg "Please choose the directory to save the $version_upper AppImage to..." "message"
cd "$HOME"
export save_dir="$(fltk-dialog --title="Discord AppImage" --center --directory)"
fi
# exit if no dir or dir not writable
if [[ -z "$save_dir" ]]; then
discord_error "No directory chosen" "1"
fi
if [[ "$discord_build_full" == "true" ]]; then
# show progress bar while building AppImage
fltk-dialog --title="Discord AppImage" \
--center \
--width=400 \
--progress \
--pulsate \
--no-cancel \
--no-escape \
--undecorated \
--skip-taskbar \
--text="Building $version_upper AppImage. Please wait..." &
export progress_pid="$!"
sleep 0.5
fi
# create AppDir
mkdir -p "$HOME"/.cache/"$version_lower"-appimage/AppDir
# setup AppRun
echo '#!/bin/bash -x' > "$HOME"/.cache/"$version_lower"-appimage/AppDir/AppRun
echo 'export RUNNING_DIR="$(dirname "$(readlink -f "$0")")"' >> "$HOME"/.cache/"$version_lower"-appimage/AppDir/AppRun
echo 'export PATH="$RUNNING_DIR"/usr/bin/:"$PATH"' >> "$HOME"/.cache/"$version_lower"-appimage/AppDir/AppRun
echo 'export LD_LIBRARY_PATH="$RUNNING_DIR"/usr/lib/:"$RUNNING_DIR"/usr/lib/x86_64-linux-gnu:"${LD_LIBRARY_PATH}"' >> "$HOME"/.cache/"$version_lower"-appimage/AppDir/AppRun
echo 'discord-runner "$@"' >> "$HOME"/.cache/"$version_lower"-appimage/AppDir/AppRun
# make executable
chmod +x "$HOME"/.cache/"$version_lower"-appimage/AppDir/AppRun
# download and extract discord and dependencies to AppDir
discord_setup
# write version_lower to .build_version file
echo "$version_lower" > "$HOME"/.cache/"$version_lower"-appimage/AppDir/usr/bin/.build_version
if [[ "$discord_build_full" == "true" ]]; then
# run Discord's postinst script before creating AppImage
chmod +x "$HOME"/.cache/"$version_lower"-appimage/AppDir/usr/share/"$version_lower"/postinst.sh
"$HOME"/.cache/"$version_lower"-appimage/AppDir/usr/share/"$version_lower"/postinst.sh || \
discord_error "Error running 'postinst.sh' script from $version_upper" "1"
fi
# download appimagetool
curl -skL "https://github.com/AppImage/AppImageKit/releases/download/continuous/appimagetool-x86_64.AppImage" \
-o "$HOME"/.cache/"$version_lower"-appimage/appimagetool || \
discord_error "Error downloading 'appimagetool'" "1"
# make executable
chmod +x "$HOME"/.cache/"$version_lower"-appimage/appimagetool
# build AppImage using appimagetool
ARCH="x86_64" "$HOME"/.cache/"$version_lower"-appimage/appimagetool \
"$HOME"/.cache/"$version_lower"-appimage/AppDir \
"$HOME"/.cache/"$version_lower"-appimage/"$version_lower".AppImage || \
discord_error "Error using 'appimagetool' to build AppImage for $version_upper" "1"
# check if save dir is writeable
if [[ -w "$save_dir" ]]; then
# create save_dir
mkdir -p "$save_dir" || discord_error "Error creating directory '$save_dir'" "1"
# mv to save_dir
mv "$HOME"/.cache/"$version_lower"-appimage/"$version_lower".AppImage "$save_dir"/"$version_lower" || \
discord_error "Error moving $version_upper AppImage to '$save_dir'" "1"
# try to use pkexec if not writable
elif command -v pkexec &> /dev/null; then
# create save_dir and move AppImage to save_dir
pkexec bash -c "mkdir -p \"$save_dir\" && \
mv \"$HOME\"/.cache/\"$version_lower\"-appimage/\"$version_lower\".AppImage \"$save_dir\"/\"$version_lower\"" || \
discord_error "Error moving $version_upper AppImage to '$save_dir'" "1"
else
sudo_pass="$(fltk-dialog --title="Discord AppImage" \
--close-label="OK" \
--center \
--password \
--text="Authentication is needed to move the $version_upper AppImage to '$save_dir'")"
echo "$sudo_pass" | sudo -S mkdir -p "$save_dir" || discord_error "Error creating directory '$save_dir'" "1"
echo "$sudo_pass" | sudo -S mv "$HOME"/.cache/"$version_lower"-appimage/"$version_lower".AppImage "$save_dir"/"$version_lower" || \
discord_error "Error moving $version_upper AppImage to '$save_dir'" "1"
fi
# kill progress bar
if [[ -n "$progress_pid" ]]; then
kill -SIGTERM "$progress_pid"
fi
# if being ran from distributable AppImage, ask to create menu entry
if [[ "$discord_build_full" == "true" && ! -d "$running_dir/../share/$version_lower" ]]; then
discord_msg "Finished building AppImage for $version_upper version '$latest_ver' to '$save_dir/$version_lower'.\n\nWould you like to create a menu entry for $version_upper?\n\n" "question"
if [[ "$?" == "0" ]]; then
# copy desktop file and icon to ~/.local
mkdir -p "$HOME"/.local/share/applications
mkdir -p "$HOME"/.local/share/icons/hicolor/256x256/apps
rm -rf "$HOME"/.local/share/applications/"$version_lower".desktop
rm -rf "$HOME"/.local/share/icons/hicolor/256x256/apps/"$version_lower".png
cp "$HOME"/.cache/"$version_lower"-appimage/AppDir/usr/share/"$version_lower"/"$version_lower".desktop \
"$HOME"/.local/share/applications/"$version_lower".desktop || \
discord_error "Error copying '$version_lower.desktop' to '$HOME/.local/share/applications/$version_lower.desktop'" "1"
cp "$HOME"/.cache/"$version_lower"-appimage/AppDir/usr/share/"$version_lower"/discord.png \
"$HOME"/.local/share/icons/hicolor/256x256/apps/"$version_lower".png || \
discord_error "Error copying 'discord.png' to '$HOME/.local/share/icons/hicolor/256x256/apps/$version_lower.png'" "1"
# fix Exec and Icon lines in .desktop file
sed -i "s%^Exec=.*%Exec=$save_dir/$version_lower%g" \
"$HOME"/.local/share/applications/"$version_lower".desktop
sed -i "s%^Icon=.*%Icon=$HOME/.local/share/icons/hicolor/256x256/apps/$version_lower.png%g" \
"$HOME"/.local/share/applications/"$version_lower".desktop
discord_msg "$version_upper desktop file and icon have been copied to '$HOME/.local/share'.\nYou can run '$save_dir/$version_lower uninstall' if you would like to remove them later.\n$version_upper will now start. This AppImage is no longer required and can be removed." "message"
else
discord_msg "$version_upper will now start. This AppImage is no longer required and can be removed." "message"
fi
else
discord_msg "Finished building AppImage for $version_upper version '$latest_ver'." "message"
fi
rm -rf "$HOME"/.cache/"$version_lower"-appimage
}
# function to check for update and apply update if available
discord_update() {
# get latest version by checking header on download url
latest_headers="$(curl -skIX HEAD "$version_url")"
latest_ver="$(echo "$latest_headers" | grep -im1 '^location:' | cut -f6 -d'/')"
if [[ -z "$latest_ver" ]]; then
discord_error "Error getting latest $version_upper version information" "1"
fi
# skip version check if $discord_build_full set to true and just build AppImage
if [[ "$discord_build_full" != "true" ]]; then
# get current version from ../share/"$version_lower"/resources/build_info.json
current_ver="$(grep '"version":' "$running_dir"/../share/"$version_lower"/resources/build_info.json | cut -f4 -d'"')"
if [[ -z "$current_ver" ]]; then
discord_error "Error getting current $version_upper version" "1"
fi
echo "Current version: $current_ver"
echo "Latest version: $latest_ver"
# check if versions match and return if they do
if [[ "$current_ver" == "$latest_ver" ]]; then
# up to date, run Discord
echo "$version_upper is up to date."
# run with --disable-gpu-sandbox to work around bug with Electron and glibc 2.34
"$running_dir"/"$version_lower" "$@"
# while loop that sleeps so that internal update process works
while true; do
sleep 30
# break if Discord is not running
if ! pgrep -f "$usr_dir/share/$version_lower/Discord" > /dev/null; then
break
fi
done
exit 0
fi
# versions did not match, so build new AppImage
discord_msg "New $version_upper version '$latest_ver' is available.\nUpdate now?" "question"
if [[ "$?" != "0" ]]; then
discord_error "$version_upper was not updated" "0"
fi
# set $discord_build_full to true so Discord deb will be downloaded
export discord_build_full="true"
else
discord_msg "Would you like to build $version_upper AppImage for version '$latest_ver'?" "question"
if [[ "$?" != "0" ]]; then
discord_error "$version_upper AppImage was not built." "0"
fi
fi
# detect previous save_dir from .desktop file
if [[ -f "$HOME/.local/share/applications/$version_lower.desktop" ]]; then
desktop_exec_path="$(grep -m1 '^Exec=' "$HOME"/.local/share/applications/"$version_lower".desktop | cut -f2 -d'=' | sed 's%\s-.*%%g')"
# if Exec value starts with '/' and basename is version_lower, use readelf to check if is AppImage
if [[ "$(echo "$desktop_exec_path" | cut -c1)" == "/" && "$(basename "$desktop_exec_path")" == "$version_lower" ]]; then
# use readelf to check comment for AppImage and ask to use that path as save_dir
if readelf -Wp .comment "$desktop_exec_path" | grep -q 'AppImage'; then
discord_msg "Existing $version_upper AppImage detected.\nWould you like to save $version_upper AppImage version $latest_ver to '$desktop_exec_path'?\nThis will overwrite the existing $version_upper AppImage." "question"
if [[ "$?" == "0" ]]; then
export save_dir="$(dirname "$desktop_exec_path")"
desktop_exec="$(grep -m1 '^Exec=' "$HOME"/.local/share/applications/"$version_lower".desktop | cut -f2- -d'=')"
fi
fi
fi
fi
# build AppImage
discord_buildappimage
# run new AppImage, fork it to background, and exit
cd "$HOME"
if [[ -n "$desktop_exec" ]]; then
$desktop_exec "$@" & disown
else
"$save_dir"/"$version_lower" "$@" & disown
fi
exit 0
}
# get dir script is running from
export running_dir="$(dirname "$(readlink -f "$0")")"
export usr_dir="$(dirname "$running_dir")"
export discord_build_full="false"
# get Discord version by checking for directories or input when building from distributable AppImage
# Discord Stable
if [[ -d "$running_dir/../share/discord" ]]; then
export version_lower="discord"
export version_upper="Discord"
export version_url="https://discord.com/api/download?format=deb&platform=linux"
# Discord Insiders
elif [[ -d "$running_dir/../share/discord-ptb" ]]; then
export version_lower="discord-ptb"
export version_upper="Discord PTB"
export version_url="https://discord.com/api/download/ptb?format=deb&platform=linux"
elif [[ -d "$running_dir/../share/discord-canary" ]]; then
export version_lower="discord-canary"
export version_upper="Discord Canary"
export version_url="https://discord.com/api/download/canary?format=deb&platform=linux"
else
if [[ "$1" != "build-distrib" ]]; then
export discord_build_full="true"
# full AppImage has not been built, detect which version to build
build_version="$(cat "$running_dir"/.build_version)"
case "$build_version" in
discord) # Discord Stable
export version_lower="discord"
export version_upper="Discord"
export version_url="https://discord.com/api/download?format=deb&platform=linux"
;;
discord-ptb) # Discord PTB
export version_lower="discord-ptb"
export version_upper="Discord PTB"
export version_url="https://discord.com/api/download/ptb?format=deb&platform=linux"
;;
discord-canary) # Discord Insiders
export version_lower="discord-canary"
export version_upper="Discord Canary"
export version_url="https://discord.com/api/download/canary?format=deb&platform=linux"
;;
*) exit 0;;
esac
fi
fi
# check arguments
case "$1" in
build-distrib) # build AppImage for distribution that doesn't actually contain Discord
export latest_ver="Distributable AppImage"
case "$2" in
*ptb) # Discord PTB
export version_lower="discord-ptb"
export version_upper="Discord PTB"
export version_url="https://discord.com/api/download/ptb?format=deb&platform=linux"
;;
*canary) # Discord Canary
export version_lower="discord-canary"
export version_upper="Discord Canary"
export version_url="https://discord.com/api/download/canary?format=deb&platform=linux"
;;
*) # Discord Stable
export version_lower="discord"
export version_upper="Discord"
export version_url="https://discord.com/api/download?format=deb&platform=linux"
;;
esac
if [[ -z "$3" ]]; then
export save_dir="$PWD"
else
if [[ ! -d "$3" ]]; then
discord_error "'$3' is not a directory" "1"
fi
export save_dir="$3"
fi
discord_buildappimage
;;
uninstall) # remove desktop file and icon from ~/.local
rm -rf "$HOME"/.local/share/applications/"$version_lower".desktop
rm -rf "$HOME"/.local/share/icons/hicolor/256x256/apps/"$version_lower".png
discord_msg "$version_upper desktop file and icon have been removed from '$HOME/.local/share'" "message"
;;
*) discord_update "$@";; # check for update and run Discord
esac