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#!/bin/bash
name="Libredbdiff"
baseconfpath="/etc/libredbdiff"
basedbpath="/var/lib/libredbdiff"
conffile="$baseconfpath/pacman.conf.parabola"
conffilearch="$baseconfpath/pacman.conf.archlinux"
dbpath="$basedbpath/pacman.parabola"
dbpatharch="$basedbpath/pacman.archlinux"
mirrorlist="$baseconfpath/mirrorlist.parabola"
mirrorlistarch="$baseconfpath/mirrorlist.archlinux"
mirror='http://repo.parabolagnulinux.org/$repo/os/$arch'
mirrorarch='http://mirrors.kernel.org/archlinux/$repo/os/$arch'
error() { echo -e "Error. $@" > /dev/stderr ; exit 1; }
if [[ $# == 1 ]] ; then
[[ $1 == -n ]] && UPDATE=0
[[ $1 == -h ]] && { echo -e "${name}. Show [libre] packages that need to be updated from Arch repositories.\n\nUsage:\nlibredbdiff\t\tInitialize (first run) or update pacman databases\nlibredbdiff -n\t\tPrint results" ; exit 0 ; }
elif [[ $# != 0 ]] ; then
error "Bad arguments. Nothing done."
else
UPDATE=1
fi
if (( $UPDATE )) ; then
[[ $EUID != 0 ]] && { error "To initialize $name or update $name pacman databases, the script must be run as root. Nothing done." ; }
[[ -d "$baseconfpath" && -d "$basedbpath" && -d "$dbpath" && -d "$dbpatharch" && -e "${conffile}" && -e "${conffilearch}" && -e "${mirrorlist}" && -e "${mirrorlist}" ]] || { echo "${name} files are missing. Initializing." ; init=1 ; }
createdir() {
if [[ ! -e $1 ]] ; then
echo "Creating directory $1"
mkdir "$1" || error "Failed to create directory $1. Exiting."
else
[[ $init ]] && echo "Warning. ${1} already exists. Skipping."
fi
}
createdir "$baseconfpath"
createdir "$basedbpath"
createdir "$dbpath"
createdir "$dbpatharch"
downloadfile() {
if [[ ! -e $1 ]] ; then
echo "$2"
if wget -q "$3" -O "$1"; then
return 255
else
error "Failed to download ${1}. Exiting."
fi
else
[[ $init ]] && echo "Warning. ${1} already exists. Skipping."
fi
}
downloadfile "${conffile}" "Downloading Parabola pacman.conf" "https://projects.parabolagnulinux.org/abslibre.git/plain/libre/pacman/pacman.conf.x86_64"
downloadfile "${conffilearch}" "Downloading Arch pacman.conf" "https://projects.archlinux.org/svntogit/packages.git/plain/pacman/trunk/pacman.conf.x86_64"
if [[ $? == 255 ]] ; then
echo "Setting Arch mirrorlist file in ${conffilearch}"
sed -i "s|/etc/pacman\.d/mirrorlist$|$baseconfpath/mirrorlist.archlinux|" "${conffilearch}"
fi
setmirror() {
local distro="$1"
local mirror="$2"
local mirrorlist="$3"
[[ $init ]] && [[ $mirror ]] && {
mirrorescaped="${mirror//./\\.}" ; mirrorescaped="${mirrorescaped//\$/\\$}"
echo "Setting ${mirror} as the only enabled ${distro} mirror." && \
sed -i 's|^#\(Server = '"${mirrorescaped}"'\)$|\1|' "${mirrorlist}"
}
}
downloadfile "${mirrorlist}" "Downloading Parabola mirrorlist" "https://repo.parabolagnulinux.org/mirrorlist.txt"
if [[ $? == 255 ]] ; then
sed -i 's|^Server|#Server|' "${mirrorlist}"
setmirror "Parabola" "$mirror" "$mirrorlist"
fi
downloadfile "${mirrorlistarch}" "Downloading Arch mirrorlist" "https://projects.archlinux.org/svntogit/packages.git/plain/pacman-mirrorlist/trunk/mirrorlist"
if [[ $? == 255 ]] ; then
setmirror "Arch" "$mirrorarch" "$mirrorlistarch"
fi
echo -e "\nSynchronizing $name pacman databases for Parabola"
pacman --config "${conffile}" -b "${dbpath}" -Sy || error "Failed to synchronize pacman database for Parabola. Exiting."
echo -e "\nSynchronizing $name pacman databases for Arch"
pacman --config "${conffilearch}" -b "${dbpatharch}" -Sy || error "Failed to synchronize pacman database for Arch. Exiting."
echo
echo "$name pacman databases are updated. $name is ready. Run libredbdiff -n to print results."
exit 0
else
filenotfound() {
[[ ! -r $1 ]] && { error "Could not read $1. Nothing done.\nIt may be necessary to run libredbdiff without arguments as root to initialize ${name}." ; }
}
filenotfound "${dbpath}"
filenotfound "${dbpatharch}"
filenotfound "${conffile}"
filenotfound "${conffilearch}"
filenotfound "${mirrorlist}"
filenotfound "${mirrorlistarch}"
fi
unset provides ver verarch
declare -Ax provides ver verarch
comparepkgs() {
if [[ ${verarch["$pkgname"]} ]] ; then
cmp=$(vercmp ${ver["$pkgname"]} ${verarch["$pkgname"]})
[[ $cmp -lt 0 ]] && echo "${pkgname} needs update from the Arch package of the same name. Versions: ${ver["$pkgname"]} - ${verarch["$pkgname"]}"
elif [[ ${provides["$pkgname"]} ]] ; then
for provide in ${provides["$pkgname"]} ; do
[[ ${verarch["$provide"]} ]] && {
cmp=$(vercmp "${ver["$pkgname"]}" "${verarch["$provide"]}")
[[ $cmp -lt 0 ]] && echo "${pkgname} may need update from provide candidate ${provide}. Versions: ${ver["$pkgname"]} - ${verarch["$provide"]}"
}
done
else
echo "Could not find candidate to compare ${pkgname}"
fi
}
while read -a line ; do
verarch["${line[0]}"]="${line[1]}"
done < <(pacman --dbpath "${dbpatharch}" --config "${conffilearch}" -Ss | grep -v '^ ' | awk -F/ '{print $2}')
expac -b "${dbpath}" -c "${conffile}" -Ss '%r/%n %v %S' | awk -F/ '$1 == "libre" {print $2}' | while read -a line ; do
ver["${line[0]}"]="${line[1]}"
provides[${line[0]}]="${line[@]:2}"
pkgname=${line[0]}
comparepkgs
done
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