Add support for backing up and restoring software
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4 changed files with 226 additions and 2 deletions
15
scripts/Arch/OS/backup.fish
Executable file
15
scripts/Arch/OS/backup.fish
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#!/bin/env fish
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begin
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set -l dir (status dirname)
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function installValhallaDeps -V dir
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source "$dir/../lib/software.fish"
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and pacinst fish git jq nix sudo tmux
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end
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function getDeploymentScript -V dir
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echo "$dir/../lib/deploy.fish"
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end
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source "$dir/../../Common/OS/backup.fish"
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end
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60
scripts/Common/OS/backup.fish
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60
scripts/Common/OS/backup.fish
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#!/bin/env fish
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set -l dir (status dirname)
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source "$dir/../../lib/action.fish"
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function backupAction -V dir
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source "$dir/../../lib/hooks.fish"
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if not type -q getDeploymentScript
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function getDeploymentScript
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echo "No deployment script specified! No software will be installed." 1>&2
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false
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end
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end
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set -l deployScript (getDeploymentScript)
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if fish "$dir/../../../lib/modules/partition/confirm.fish" "Do you wish to store the backup on an SSH server?" n
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read -xP "Please specify the host name of the SSH server: " VALHALLA_BACKUP_SERVER
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read -xP "Please specify the port of the SSH server (default 22): " VALHALLA_BACKUP_SERVER_PORT
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read -xP "Please specify the name of the user to log in to the SSH server: " VALHALLA_BACKUP_SERVER_USER
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if [ -z "$VALHALLA_BACKUP_SERVER_PORT" ]
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set -x VALHALLA_BACKUP_SERVER_PORT 22
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end
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if [ -n "$VALHALLA_BACKUP_SERVER_USER" ]
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set -x VALHALLA_BACKUP_SERVER "$VALHALLA_BACKUP_SERVER_USER@$VALHALLA_BACKUP_SERVER"
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end
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echo
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echo "$(tput setaf 3)==== WARNING ====$(tput sgr0)"
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echo "For a seamless experience, please make sure that you are able to establish an unattended ssh connection using key authentication."
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echo
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echo "$(tput bold)This command should succeed without user interaction:$(tput sgr0)"
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echo "ssh -o PasswordAuthentication=no -p $VALHALLA_BACKUP_SERVER_PORT $VALHALLA_BACKUP_SERVER true"
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read -P "Press enter once you're done: "
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echo
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end
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read -xP "Please specify the path to the directory to save the backup to: " VALHALLA_BACKUP_DIR
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runHook backupSoftware || begin
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echo "Backing up software..."
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and if [ -n "$deployScript" ]
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source $deployScript backup
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end
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end
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runHook backupUsers || begin
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if [ -n "$deployScript" ]
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for name in (getUsers | jq '.[]' --raw-output0 | string split0)
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echo "Backing up user `$name`..."
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and source $deployScript userBackup $name
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end
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end
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end
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end
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runSetupUserAction backupAction
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81
scripts/lib/restoration.fish
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81
scripts/lib/restoration.fish
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@ -0,0 +1,81 @@
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function backupFiles
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if [ -n "$VALHALLA_BACKUP_DIR" ]
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argparse -i "base-directory=" -- $argv
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set -l tarArgs
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set -l path (getArchivePath $argv)
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set -l dir (dirname "$path")
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argparse -i "u/user=" "n/name=" -- $argv
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if runRestorationCommand test ! -d "$dir"
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runRestorationCommand mkdir -p "$dir"
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end
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if [ -n "$_flag_base_directory" ]
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set -a argv --base-directory "$_flag_base_directory"
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set -a tarArgs -C "$_flag_base_directory"
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else
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set -a tarArgs -P
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end
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sudo tar $tarArgs -cvz (fd $argv) | createArchive "$path"
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end
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end
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function restoreFiles
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if [ -n "$VALHALLA_BACKUP_DIR" ]
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argparse -i "user=" "base-directory=" -- $argv
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set -l tarArgs
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set -l sudoArgs
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if [ -n "$_flag_base_directory" ]
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set -a tarArgs -C "$_flag_base_directory"
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else
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set -a tarArgs -P
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end
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if [ -n "$_flag_user" ]
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set -a sudoArgs -u "$_flag_user"
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end
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fetchArchive $argv | begin
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sudo $sudoArgs tar $tarArgs -xvz
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end
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end
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end
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function createArchive -a path
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runRestorationCommand sh -c "tee $(string escape -- "$path") >/dev/null"
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end
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function fetchArchive
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set -l path (getArchivePath $argv)
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runRestorationCommand cat "$path"
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end
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function runRestorationCommand
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if [ -z "$VALHALLA_BACKUP_SERVER" ]
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$argv
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else
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set -l args
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if [ -n "$VALHALLA_BACKUP_SERVER_PORT" ]
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set -a args -p $VALHALLA_BACKUP_SERVER_PORT
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end
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ssh $args "$VALHALLA_BACKUP_SERVER" (string escape -- $argv)
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end
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end
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function getArchivePath
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argparse -i "u/user=" "n/name=" -- $argv
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set -l path "$VALHALLA_BACKUP_DIR"
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if [ -b "$_flag_user" ]
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set -a path Users "$_flag_user"
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else
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set -a path System
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end
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set -a path "$_flag_name.tar.gz"
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realpath -m (string join / $path)
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end
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@ -2,15 +2,62 @@
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begin
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set -l dir (status dirname)
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set -l backupActions \
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backup backupSW backupArgs getBackupArgs restore restoreSW \
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userBackup userBackup userBackupArgs getUserBackupArgs userRestore userRestore
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set -l actions \
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install installSW \
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configure configureSW \
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userConfig userConfig
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set -a actions $backupActions
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for i in (seq 2 2 (count $actions))
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functions -e "$actions[$i]"
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end
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for i in (seq 1 6 (count $backupActions))
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set -l function $backupActions[(math $i + 1)]
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set -l getArgs $backupActions[(math $i + 3)]
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set -l restore $backupActions[(math $i + 5)]
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for functionName in $function $restore
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function $functionName -V dir -V getArgs -V functionName -V restore
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set -l args
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if functions -q $getArgs
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set args ($getArgs $argv)
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end
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if [ "$functionName" = "$restore" ] || [ -n "$args" ]
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for arg in name user
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set -l varName "_flag_$arg"
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begin
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set -l backup $argv
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argparse -i "$arg=" -- $args
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set -l argv $backup
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end
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if [ -z "$$varName" ]
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argparse -i "$arg=" -- $argv
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set -a args "--$arg" "$$varName"
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end
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end
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source "$dir/restoration.fish"
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if [ "$functionName" != "$restore" ]
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backupFiles $args
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else
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restoreFiles $args
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end
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end
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end
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end
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end
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function runPSUserAction
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argparse -i "script=" "action=" "user=" -- $argv
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@ -86,7 +133,9 @@ begin
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if [ "$action" = "$actions[$i]" ]
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set -l message
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set -l function $actions[(math $i + 1)]
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set -l preRun "__preRun"
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set -l postRun "__postRun"
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functions -e $preRun
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functions -e $postRun
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switch "$action"
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@ -102,7 +151,11 @@ begin
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end
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case configure
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set message "Configuring `$name`..."
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case userConfig
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function $preRun -V args
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runInstallerAction $args --action restore
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end
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case userConfig userBackup userRestore
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argparse -i "user=" -- $argv
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set -l user "$_flag_user"
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@ -117,7 +170,22 @@ begin
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set install false
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end
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set message "Configuring `$name` for `$user`..."
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switch "$action"
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case userConfig
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set message "Configuring `$name` for `$user`..."
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function $preRun -V args
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runInstallerAction $args --action userRestore
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end
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case userBackup
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set message "Backing up `$name` for `$user`..."
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case userRestore
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set message "Restoring `$name` for `$user`..."
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end
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end
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if functions -q $preRun
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$preRun
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end
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if functions -q "$function" && $install
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