mirror of
https://0xacab.org/liberate/backupninja.git
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237 lines
7.5 KiB
Plaintext
237 lines
7.5 KiB
Plaintext
# -*- mode: sh; sh-basic-offset: 3; indent-tabs-mode: nil; -*-
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#####################################################
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## VSERVERS RELATED FUNCTIONS FOR NINJAHELPER
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##
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## Depends on:
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## - easydialog library
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## - $conffile
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##
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## Global variables used and modified here:
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## - $vservers_are_available (yes/no)
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## - $found_vservers (list)
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## - $selected_vservers (list)
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## - $host_or_vservers (host/vservers/both)
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##
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##
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## Get vservers-related variables.
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## Then, if Vservers are enabled, check that:
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## - VROOTDIR is valid;
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## - at least one vserver can be found.
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## If, and only if, the above conditions are all true:
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## - set $vservers_are_available to 'yes';
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## - set $found_vservers to the list of all vservers found on the system.
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## This function has to be run once before a new helper is run.
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## If the argument is "nodialog", use the backupninja's message functions
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## instead of easydialog.
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##
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init_vservers() {
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local arg=$1
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# get global variables from the conffile
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setfile $conffile
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getconf vservers no
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getconf VSERVERINFO /usr/sbin/vserver-info
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getconf VSERVER /usr/sbin/vserver
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getconf VROOTDIR `if [ -x "$VSERVERINFO" ]; then $VSERVERINFO info SYSINFO | grep '^ *vserver-Rootdir' | @AWK@ '{print $2}'; fi`
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# canonicalize VROOTDIR
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[ -z "$VROOTDIR" ] || VROOTDIR=`readlink --canonicalize $VROOTDIR`
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# init this library's global variables
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vservers_are_available=no
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found_vservers=
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selected_vservers=
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host_or_vservers=host
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# check vservers real availability
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if [ $vservers = yes ]; then
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if [ ! -x "$VSERVERINFO" ]; then
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`if [ "$arg" = nodialog ]; then echo fatal; else echo "msgBox warning"; fi` \
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"vservers enabled in $conffile, but vserver-info command was not found. Please set the VSERVERINFO configuration variable to its full path."
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return
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fi
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if [ ! -x "$VSERVER" ]; then
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`if [ "$arg" = nodialog ]; then echo fatal; else echo "msgBox warning"; fi` \
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"vservers enabled in $conffile, but vserver command was not found. Please set the VSERVER configuration variable to its full path."
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return
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fi
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if [ -z "$VROOTDIR" ]; then
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`if [ "$arg" = nodialog ]; then echo fatal; else echo "msgBox warning"; fi` \
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"vservers enabled in $conffile, but VROOTDIR is not set and could not be guessed."
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return
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fi
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if [ ! -d "$VROOTDIR" ]; then
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`if [ "$arg" = nodialog ]; then echo fatal; else echo "msgBox warning"; fi` \
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"vservers enabled in $conffile, but VROOTDIR ($VROOTDIR) does not exist.";
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return
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fi
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found_vservers=`ls $VROOTDIR | grep -E -v "lost\+found|ARCHIVES" | tr "\n" " "`
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if [ -z "$found_vservers" ]; then
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`if [ "$arg" = nodialog ]; then echo warning; else echo "msgBox warning"; fi` \
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"vservers enabled in $conffile, but no vserver was found in $VROOTDIR.";
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return
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fi
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vservers_are_available=yes
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fi
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}
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##
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## If all the arguments are existing vservers names, returns 0.
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## Else, returns 1. Also returns 1 if no argument is given.
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##
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vservers_exist() {
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[ $# -ge 1 ] || return 1
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local args="$1"
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local vserver i found
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for vserver in $args ; do
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found=no
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for i in $found_vservers ; do
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if [ $vserver = $i ]; then
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found=yes
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break
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fi
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done
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[ $found = yes ] || return 1
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done
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return 0
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}
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##
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## If the argument is the name of a vserver selected by the current helper,
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## echoes 'on' and returns 0.
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## Else, echoes 'off' and returns 1.
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##
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vserver_is_selected() {
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local vserver=$1
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local vserver_is_selected=1
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local i
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for i in $selected_vservers ; do
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[ "$vserver" == "$i" ] && vserver_is_selected=0
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done
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if [ $vserver_is_selected = 0 ]; then
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echo on
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else
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echo off
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fi
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return $vserver_is_selected
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}
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##
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## Have the user choose one Vserver among the existing ones.
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## Set $selected_vservers to the chosen one's name.
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## Returns 1 if cancelled or if Vservers are not available.
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##
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choose_one_vserver() {
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[ "$vservers_are_available" == "yes" ] || return 1
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local title=$1
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local i=
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local vserver=
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REPLY=
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while [ -z "$REPLY" ]; do
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[ -n "$selected_vservers" ] && setDefault $selected_vservers
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listBegin "$title" "Choose at least one Linux-Vserver to backup:"
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for vserver in $found_vservers; do
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listItem "$vserver" "Backup $vserver vserver"
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done
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listDisplay menu
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[ $? = 0 ] || return 1
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done
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selected_vservers=$REPLY
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}
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##
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## If Vservers are not enabled, set host_or_vservers='host' and then return
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## Else, have the user choose if he/she wants to perform the backup on the host
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## system or on one Vserver.
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## Set, respectively, $host_or_vservers to 'host' or 'vservers'.
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## Returns 1 if cancelled.
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##
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choose_host_or_one_vserver() {
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if [ "$vservers_are_available" != "yes" ]
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then
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host_or_vservers='host'
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return
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fi
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local title=$1
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# if there is one, set the previously chosen item as the default
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[ -n "$host_or_vservers" ] && setDefault $host_or_vservers
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menuBox "$title - src" "Do you want to operate on the host system and/or on vservers?" \
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"host" "Host system" \
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"vserver" "One Vserver"
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[ $? = 0 ] || return 1
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case $REPLY in
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"host")
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host_or_vservers='host'
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;;
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"vserver")
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host_or_vservers='vservers'
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;;
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esac
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}
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##
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## If Vservers are not enabled, set host_or_vservers='host' and then return
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## Else, have the user choose the target he/she wants to perform the backup on:
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## - host system only;
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## - some vservers only;
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## - both the host system and some vservers.
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## Set, respectively, $host_or_vservers to 'host', 'vservers', or 'both'
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## Returns 1 if cancelled.
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##
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choose_host_or_vservers_or_both() {
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if [ "$vservers_are_available" != "yes" ]
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then
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host_or_vservers='host'
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return
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fi
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local title=$1
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# if there is one, set the previously chosen item as the default
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[ -n "$host_or_vservers" ] && setDefault $host_or_vservers
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menuBox "$title - src" "Do you want to operate on the host system and/or on vservers?" \
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"host" "Host system only" \
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"vservers" "Vservers only" \
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"both" "Host system and Vservers"
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[ $? = 0 ] || return 1
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case $REPLY in
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"host")
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host_or_vservers='host'
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;;
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"vservers")
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host_or_vservers='vservers'
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;;
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"both")
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host_or_vservers='both'
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;;
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esac
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}
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##
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## Have the user choose among "all vservers" and a not-empty subset of these.
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## Set $selected_vservers to 'all' or to a space-separated name list.
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## Returns 1 if cancelled or if Vservers are not available.
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##
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choose_one_or_more_vservers() {
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[ "$vservers_are_available" == "yes" ] || return 1
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local title=$1
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local i=
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# UI
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booleanBox "$title" "Do you want to backup all vservers?" ` [ -z "$selected_vservers" -o "$selected_vservers" == "all" ] || echo no`
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if [ $? = 0 ]; then
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selected_vservers="all"
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else
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# choose among the existing vservers
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local vserver=
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local vserver_was_selected=
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REPLY=
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while [ -z "$REPLY" ]; do
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listBegin "$title" "Choose at least one Linux-Vserver to backup:"
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# list existing vservers, preselecting the previously selected ones
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for vserver in $found_vservers; do
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listItem "$vserver" "Backup $vserver vserver" `vserver_is_selected $vserver`
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done
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listDisplay checklist
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[ $? = 0 ] || return 1
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done
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# remove quotes around each vserver name
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selected_vservers=`echo $REPLY | tr -d '"'`
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fi
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}
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