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manuel
80 lines
3.2 KiB
Bash
Executable File
80 lines
3.2 KiB
Bash
Executable File
#!/bin/bash
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#
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# This script enables an after-the-fact timeshift equivalent for Arch systems
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# Give it a date (as in 2020-09-20) and it will use the Arch archive repos
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# to revert to the package state that applied on that date.
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#
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# Note: no AUR package will be reverted.
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#
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# 21 September 2020 - freebird54
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# 21 July 2021 - changes by manuel
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#
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# Get some useful definitions:
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source /usr/share/endeavouros/scripts/eos-script-lib-yad || exit 1
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export -f eos_yad
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export -f eos_GetProgName
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export -f eos_GetArch
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# EOS_ROOTER
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DIE() {
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local msg="$1"
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local title="$2" # optional, default is "Error"
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[ -n "$title" ] || title="Error"
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echo "$1" | eos_yad --text-info --title="$title" --text="Message from '$progname':" --image=error --button=yad-quit
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exit 1
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}
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STOP() { DIE "$1" Warning; }
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DateValidityCheck() {
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[ -n "$REVERTDATE" ] || exit 1 # No date selected.
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[ "$REVERTDATE" = "$stopdate" ] && STOP "Current date selected, nothing to do."
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curl -Lsm 10 -o/dev/null --fail "$urlbase" || DIE "Archive at $REVERTDATE not found!"
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}
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Main()
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{
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local progname="$(eos_GetProgName)"
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case "$(eos_GetArch)" in
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x86_64) ;;
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*) DIE "This program is supported only on x86_64 machines." ;; # because of mirrors...
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esac
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eos_assert_deps $progname yad || return 1
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local date=$(/usr/bin/date +%Y%m%d-%H%M) # for temporary backup file
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local stopdate="$(/usr/bin/date +%Y/%m/%d)" # for checking if user selected this date
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local mlist=/etc/pacman.d/mirrorlist
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local bak="$mlist.$progname.$date"
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local txt="This app can revert (downgrade) packages of this system to the state they were in\non the selected date.\n"
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txt+="Note: AUR packages will <i>not</i> be reverted.\n\n"
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txt+="Please select the date to revert your packages to.\n"
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local REVERTDATE=$(eos_yad --calendar --title "Select Date" --text="$txt" --image=dialog-question --date-format=%C%y/%m/%d \
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--button='yad-cancel!!Do nothing':1 --button='Revert!dialog-yes!Downgrade':0)
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local urlbase="https://archive.archlinux.org/repos/$REVERTDATE"
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local cmd=""
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local cmd2=""
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local tmpmlist
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DateValidityCheck
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# Create a temporary mirrorlist for the specified date.
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tmpmlist=$(mktemp)
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printf "## Reversion mirrorlist\n\n" > $tmpmlist
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printf "%s\n\n" "Server = $urlbase/\$repo/os/\$arch" >> $tmpmlist
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cmd="mv $mlist '$bak'" # Backups original mirrorlist and
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cmd+=";mv $tmpmlist $mlist" # uses the reverted list.
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cmd+=";pacman -Syyuu" # Runs the 'downdate' command.
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cmd+=";mv '$bak' $mlist" # Restores the original mirrorlist from backup.
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cmd+=";chmod 0644 $mlist" # Make sure mirrorlist has proper permissions.
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cmd2="$(echo "$cmd" | tr ';' '\n' | sed 's|^| |')"
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if [ "$(whoami)" = "root" ] ; then
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RunInTerminal "printf 'Reverting all packages to $REVERTDATE\n\n'; echo 'Need elevated privileges to run commands:'; echo '$cmd2'; $cmd"
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else
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RunInTerminal "printf 'Reverting all packages to $REVERTDATE\n\n'; echo 'Need elevated privileges to run commands:'; echo '$cmd2'; $EOS_ROOTER '$cmd'"
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fi
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}
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Main "$@"
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