install-arch/post-install.sh

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#!/bin/sh
set -e
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qpushd() {
pushd $@ > /dev/null
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}
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qpopd() {
popd $@ > /dev/null
}
quiet() {
local DUMMY
set +e
DUMMY=$($@ 2>&1 > /dev/null)
set -e
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}
### COLORS ###
RED='\033[0;31m'
LGREEN='\033[1;32m'
YELLOW='\033[1;33m'
NC='\033[0m' # No Color
BOLD=$(tput bold)
NORM=$(tput sgr0)
readonly RED
readonly LGREEN
readonly YELLOW
readonly NC
readonly BOLD
readonly NORM
### VARS ###
CUR_PHASE=1
MAX_PHASE=2
USER_OUT=""
### DISTRO ###
PACMAN_CONF="/etc/pacman.conf"
PACMAN_TEMP_CONF="/tmp/pacman.conf"
DOAS_CONF="/etc/doas.conf"
DISTRO=$(lsb_release -is)
DEFAULT_INCLUDE='/etc/pacman.d/mirrorlist'
if [ "$DISTRO" != "Arch" -a "$DISTRO" != "Artix" ]; then
echo "Error: $(lsb_release -ds) not supported"
usage
fi
readonly PACMAN_CONF
readonly PACMAN_TEMP_CONF
readonly DOAS_CONF
readonly DISTRO
readonly DEFAULT_INCLUDE
### OPTIONS AND PARAMETERS ###
usage() {
printf "Usage: $0 [-nhv] (-p | [-d] -u <user>)\n -p: Install packages only\n -d: Install dotfiles only\n -h: Display this message\n -n: Non-interactive mode\n -v: Verbose output\n -u <user>: User that the dotfiles should be installed to\n"
exit 2
}
set_var()
{
local varname=$1
shift
if [ -z "${!varname}" ]; then
eval "$varname=\"$1\""
else
echo "Error: $2 already set"
usage
fi
}
exclusive()
{
echo "Error: $1 exclusive with $2"
usage
}
while getopts ":nvhdpu:" c; do
case $c in
d)
[ "$INSTALL" = "PACKAGES" ] && exclusive '-p' '-d'
MAX_PHASE=$((MAX_PHASE-1))
set_var INSTALL DOTFILES "-d" ;;
p)
[ "$INSTALL" = "DOTFILES" ] && exclusive '-p' '-d'
[ -n "$INSTALL_USER" ] && exclusive '-p' '<user>'
MAX_PHASE=$((MAX_PHASE-1))
set_var INSTALL PACKAGES "-p" ;;
u)
[ "$INSTALL" = "PACKAGES" ] && exclusive '-p' '<user>'
set_var INSTALL_USER $OPTARG "-u" ;;
n) NO_CONFIRM=true ;;
v) VERBOSE=true ;;
h) usage ;;
?) echo "Unknown option -$OPTARG"; usage ;;
esac
done
INSTALL=${INSTALL:-ALL}
shift $((OPTIND-1))
### VALIDATE USER ###
[ -z "$INSTALL_USER" ] && [ "$INSTALL" != "PACKAGES" ] && echo "Error: <user> required" && usage
check_user() {
HOMEDIR="$(cat /etc/passwd | awk -F: '$1 ~ /^'$1'$/ {print $6}')"
[ -z "$HOMEDIR" ] && echo "Error: User $1 does not exist" && return 1
return 0
}
if [ -n "$INSTALL_USER" ]; then
set +e
check_user "$INSTALL_USER"
[ $? -eq 1 ] && exit 2
set -e
fi
prompt_user() {
echo -n "Please type user for whom $1 (leave blank to use same user as with dotfiles or to skip step): "
local user
read user
[ -z "$user" ] && USER_OUT="$INSTALL_USER" && return
set +e
USER_OUT="$user"
check_user "$user"
[ $? -eq 1 ] && prompt_user "$1"
set -e
}
### FORCE ROOT ###
[ $(whoami) != "root" ] && echo "Please run as root" && exit 1
### ASK FOR CONFIRMATION ###
if [ ! $NO_CONFIRM ]; then
echo "${BOLD}Please confirm operation:${NORM}"
echo -ne "Installing ${LGREEN}${INSTALL@L}${NC}"
[ -n "$INSTALL_USER" ] && echo -ne " for ${LGREEN}$INSTALL_USER ($HOMEDIR)${NC}"
printf "\n"
echo -n "Proceed with installation? [y/N] "
read ans
case $ans in
y|Y) break ;;
*) exit 0 ;;
esac
fi
### INSTALLATION ###
[ $VERBOSE ] && set -x
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print_phase() {
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echo -e "${BOLD}${YELLOW}[$CUR_PHASE/$MAX_PHASE] $1 phase${NC}${NORM}"
CUR_PHASE=$((CUR_PHASE+1))
}
install_aur() {
dir="$HOMEDIR/$1"
echo -n "Installing $1... "
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quiet sudo -u "$1" git clone -q "https://aur.archlinux.org/$1.git" "$dir"
qpushd -q "$dir"
quiet sudo -u "$1" makepkg -si --noconfirm
qpopd -q
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rm -rf "$1"
echo "done"
}
remove() {
echo -n "Removing $1..."
set +e
pacman -Rs --noconfirm $1 2>&1 > /dev/null
set -e
echo "done"
}
install() {
echo -n "Installing $1..."
pacman -Sq --needed --noconfirm $1 2>&1 > /dev/null
echo "done"
}
prompt() {
echo -n "$1 [Y/n] "
[ $NO_CONFIRM ] && echo "y" && return 1
read ans
case $ans in
n|N) return 0 ;;
*) return 1 ;;
esac
}
pacman_config() {
local LABEL=$1
local OPTION=$2
local VALUE=$3
local APPEND=${4:-0} #int
local LOW_PRIORITY=${5:-0} #int
local VALUE_ESCAPE=$(echo $VALUE | sed 's|/|\\/|g')
# 1st script
# if(there is [LABEL] uncommented):
# if(there is OPTION uncommented):
# if(VALUE != CURRENT_VALUE):
# if(APPEND):
# append(VALUE);
# else:
# substitute(CURRENT_VALUE,VALUE);
# 2nd script
# else if(there is OPTION = VALUE commented):
# uncomment(OPTION = VALUE);
# 3rd script
# else if(there is [LABEL] commented):
# uncomment(LABEL);
# if(there is OPTION = VALUE commented):
# uncomment(OPTION = VALUE);
# else:
# append(OPTION = VALUE);
# 4th script
# else:
# append([LABEL]);
# append(OPTION = VALUE);
set +e
awk '
BEGIN { todo = 1 }
{ if ($0 ~ /^\['$LABEL'\][[:blank:]]*$/) {
print $0
while(1) {
hasline = getline
if (!hasline || $0 ~ /^\[.*\][[:blank:]]*$/) {
break
}
else if ($0 ~ /^'$OPTION'[[:blank:]]+=.*/) {
todo = 0
if ($0 !~ /[[:blank:]]'$VALUE_ESCAPE'/) {
if('$APPEND') {$(NF+1) = "'$VALUE'"}
else {$3 = "'$VALUE'"; NF = 3}
}
print $0
break
}
print $0
}
} else {
print $0
} }
END { exit todo } ' \
$PACMAN_CONF > $PACMAN_TEMP_CONF
if [ $? -eq 1 ]; then
awk '
BEGIN { todo = 1 }
{ if ($0 ~ /^\['$LABEL'\][[:blank:]]*$/) {
print $0
while(1) {
hasline = getline
if (!hasline || $0 ~ /^\[.*\][[:blank:]]*$/) {
break
}
if ($0 ~ /^#?'$OPTION'[[:blank:]]+=.*[[:blank:]]'$VALUE_ESCAPE'/) {
todo = 0
$1 = "'$OPTION'"
print $0
break
}
print $0
}
} else {
print $0
} }
END { exit todo } ' \
$PACMAN_CONF > $PACMAN_TEMP_CONF
if [ $? -eq 1 ]; then
awk '
BEGIN { todo = 1 }
{ if ($0 ~ /^#?\['$LABEL'\][[:blank:]]*$/) {
todo = 0
print "['$LABEL']"
while(1) {
hasline = getline
if (!hasline || $0 ~ /^\[.*\][[:blank:]]*$/) {
print "'$OPTION' = '$VALUE'"
print ""
print $0
break
}
if ($0 ~ /^#?'$OPTION'[[:blank:]]+=.*[[:blank:]]'$VALUE_ESCAPE'/) {
$1 = "'$OPTION'"
print $0
break
}
print $0
}
} else {
print $0
} }
END { exit todo } ' \
$PACMAN_CONF > $PACMAN_TEMP_CONF
if [ $? -eq 1 ]; then
if [ $LOW_PRIORITY -eq 1 ]; then
cat $PACMAN_CONF > $PACMAN_TEMP_CONF
echo "" >> $PACMAN_TEMP_CONF
echo "[$LABEL]" >> $PACMAN_TEMP_CONF
echo "$OPTION = $VALUE" >> $PACMAN_TEMP_CONF
else
awk '
BEGIN { todo = 1 }
{
if (todo && $0 ~ /^#?\[.*\][[:blank:]]*$/) {
print "['$LABEL']"
print "'$OPTION' = '$VALUE'"
print ""
todo = 0
}
print $0
}
END {
if (todo) {
print ""
print "['$LABEL']"
print "'$OPTION' = '$VALUE'"
}
} ' \
$PACMAN_CONF > $PACMAN_TEMP_CONF
fi
fi
fi
fi
mv $PACMAN_TEMP_CONF $PACMAN_CONF
set -e
}
pacman_opt() {
local CONFIG=$1
local VALUE=$2
echo -n "Adding $VALUE to $CONFIG [options] ($PACMAN_CONF)..."
pacman_config options $CONFIG $VALUE 1 0
echo "done"
}
pacman_repo() {
local REPO=$1
local INCLUDE=${2:-$DEFAULT_INCLUDE}
echo -n "Enabling repository [$REPO] ($PACMAN_CONF)..."
pacman_config $REPO "Include" $INCLUDE 0 1
echo "done"
}
link() {
echo -n "Linking $2 to $1... "
ln -sf $1 $2
echo "done"
}
append_line() {
local FILE=$1
local LINE=$2
local LINE_BLANKS="$(echo "$LINE" | sed 's/ /[[:blank:]]+/g')[[:blank:]]*"
set +e
awk ' $0 ~ /^'$LINE_BLANKS'$/ { exit 1 } ' "$FILE" > /dev/null
[ $? -eq 0 ] && echo "$LINE" >> "$FILE"
set -e
}
configure_doas() {
echo "Configuring doas..."
prompt_user 'doas will be configured'
local DOAS_USER="$USER_OUT"
if [ -n "$DOAS_USER" ]; then
append_line $DOAS_CONF "permit persist $DOAS_USER as root"
append_line $DOAS_CONF "permit nopass $DOAS_USER as root cmd pacman args -Syu"
append_line $DOAS_CONF "permit nopass $DOAS_USER as root cmd pacman args -Syyu"
fi
}
install_doas() {
#install_aur requires sudo or doas
set +e
prompt "Do you want to install doas (will remove sudo and forbid it in $PACMAN_CONF)?"
if [ $? -eq 1 ]; then
set -e
install sudo
install_aur doas
remove sudo
pacman_opt IgnorePkg sudo
pacman_opt NoUpgrade sudo
link /bin/doas /bin/sudo
configure_doas
fi
set -e
}
repos() {
echo "Detected distro $DISTRO Linux. Proceeding with enabling more repositories."
if [ "$DISTRO" = "Artix" ]; then
pacman_repo lib32
local ARCH_REPOS="$DEFAULT_INCLUDE-arch"
install archlinux-mirrorlist
pacman_repo extra $ARCH_REPOS
pacman_repo community $ARCH_REPOS
pacman_repo multilib $ARCH_REPOS
else
pacman_repo multilib
fi
}
install_packages() {
if [ "$INSTALL" != "DOTFILES" ]; then
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print_phase "Package installation"
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repos
echo -n "Upgrading system... "
pacman -Sqyu --noconfirm 2>&1 > /dev/null
echo "done"
install_doas
install_aur yay
fi
}
main() {
#install_packages
configure_doas
}
main