mirror of
https://0xacab.org/liberate/backupninja.git
synced 2024-09-20 07:31:41 +02:00
425 lines
15 KiB
Bash
425 lines
15 KiB
Bash
# -*- mode: sh; sh-basic-offset: 3; indent-tabs-mode: nil; -*-
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# vim: set filetype=sh sw=3 sts=3 expandtab autoindent:
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HELPERS="$HELPERS rdiff:incremental_remote_filesystem_backup"
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declare -a rdiff_includes
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declare -a rdiff_excludes
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declare -a rdiff_vsincludes
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declare -a rdiff_vsexcludes
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# FUNCTIONS
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do_rdiff_host_includes() {
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set -o noglob
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# choose the files to backup
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REPLY=
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while [ -z "$REPLY" ]; do
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formBegin "$rdiff_title - host system: includes"
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for ((i=0; i < ${#rdiff_includes[@]} ; i++)); do
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formItem include ${rdiff_includes[$i]}
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done
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formItem include
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formItem include
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formItem include
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formItem include
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formItem include
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formItem include
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formItem include
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formItem include
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formDisplay
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[ $? = 0 ] || return
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unset rdiff_includes
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rdiff_includes=($REPLY)
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done
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set +o noglob
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}
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do_rdiff_vserver() {
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# choose the vservers to backup (into $selected_vservers)
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choose_one_or_more_vservers "$rdiff_title"
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[ $? = 0 ] || return 1
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set -o noglob
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# choose the files to backup
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REPLY=
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while [ -z "$REPLY" ]; do
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formBegin "$rdiff_title - vsincludes (backup these directories from every vserver)"
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[ -z "$rdiff_vsincludes" ] && rdiff_vsincludes="$rdiff_default_includes"
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for i in $rdiff_vsincludes; do
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formItem include "$i"
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done
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formItem include ""
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formItem include ""
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formItem include ""
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formItem include ""
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formItem include ""
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formItem include ""
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formItem include ""
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formItem include ""
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formDisplay
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[ $? = 0 ] || return 1
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rdiff_vsincludes=($REPLY)
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done
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set +o noglob
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}
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do_rdiff_excludes() {
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set -o noglob
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formBegin "$rdiff_title: excludes"
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for ((i=0; i < ${#rdiff_excludes[@]} ; i++))
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do
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formItem exclude ${rdiff_excludes[$i]}
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done
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formItem exclude
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formItem exclude
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formItem exclude
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formItem exclude
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formItem exclude
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formItem exclude
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formItem exclude
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formItem exclude
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formDisplay
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[ $? = 0 ] || return
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unset rdiff_excludes
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rdiff_excludes=($REPLY)
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set +o noglob
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}
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do_rdiff_src() {
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choose_host_or_vservers_or_both "$rdiff_title"
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[ $? = 0 ] || return 1
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case $host_or_vservers in
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'host')
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do_rdiff_host_includes
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[ $? = 0 ] || return 1
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;;
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'vservers')
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do_rdiff_vserver
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[ $? = 0 ] || return 1
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;;
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'both')
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do_rdiff_host_includes
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[ $? = 0 ] || return 1
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do_rdiff_vserver
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[ $? = 0 ] || return 1
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;;
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*)
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return 1
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;;
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esac
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do_rdiff_excludes
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[ $? = 0 ] || return 1
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_src_done="(DONE)"
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setDefault dest
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}
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do_rdiff_dest() {
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declare -a tmp_array
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set -o noglob
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REPLY=
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while [ -z "$REPLY" -o -z "$rdiff_directory" -o -z "$rdiff_host" -o -z "$rdiff_user" ]
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do
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formBegin "$rdiff_title - destination: last three items are required"
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formItem "keep" "$rdiff_keep"
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formItem "dest_directory" "$rdiff_directory"
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formItem "dest_host" "$rdiff_host"
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formItem "dest_user" "$rdiff_user"
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formItem "dest_type" "$rdiff_type"
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formDisplay
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[ $? = 0 ] || return
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tmp_array=($REPLY)
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rdiff_keep=${tmp_array[0]}
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rdiff_directory=${tmp_array[1]}
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rdiff_host=${tmp_array[2]}
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rdiff_user=${tmp_array[3]}
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rdiff_type=${tmp_array[4]}
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done
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set +o noglob
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_dest_done="(DONE)"
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setDefault conn
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}
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do_rdiff_ssh_con() {
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local remote_status="ok"
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IFS=$' \t\n'
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if [ "$_dest_done" = "" ]; then
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msgBox "$rdiff_title: error" "You must first configure the destination."
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return
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elif [ "$rdiff_type" = "" ]; then
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msgBox "$rdiff_title: error" "You must first configure the destination backup type."
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return
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elif [ "$rdiff_user" = "" ]; then
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msgBox "$rdiff_title: error" "You must first configure the destination user."
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return
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elif [ "$rdiff_host" = "" ]; then
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msgBox "$rdiff_title: error" "You must first configure the destination host."
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return
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else
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booleanBox "$rdiff_title" "This step will create a ssh key for the local root user with no passphrase (if one does not already exist), and attempt to copy root's public ssh key to authorized_keys file of $rdiff_user@$rdiff_host. This will allow the local root to make unattended backups to $rdiff_user@$rdiff_host.\n\n\nAre you sure you want to continue?"
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[ $? = 0 ] || return
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fi
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if [ ! -f /root/.ssh/id_dsa.pub -a ! -f /root/.ssh/id_rsa.pub ]; then
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echo "Creating local root's ssh key"
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ssh-keygen -t rsa -b 4096 -f /root/.ssh/id_rsa -N ""
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echo "Done. hit return to continue"
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read
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fi
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ssh -o PreferredAuthentications=publickey $rdiff_host -l $rdiff_user "exit" 2> /dev/null
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if [ $? -ne 0 ]; then
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echo "Copying root's public ssh key to authorized_keys of $rdiff_user@$rdiff_host. When prompted, specify the password for user $rdiff_user@$rdiff_host."
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ssh-copy-id -i /root/.ssh/id_[rd]sa.pub $rdiff_user@$rdiff_host
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if [ $? -ne 0 ]; then
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echo "FAILED: Couldn't copy root's public ssh key to authorized_keys of $rdiff_user@$rdiff_host."
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ssh $rdiff_user@$rdiff_host 'test -w .ssh || test -w .'
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result=$?
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echo "Hit return to continue."
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read
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case $result in
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0 ) msgBox "$rdiff_title: error" "Directories are writable: Probably just a typo the first time." ;;
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1 ) msgBox "$rdiff_title: error" "Connected successfully to $rdiff_user@$rdiff_host, but unable to write. Check ownership and modes of ~$rdiff_user on $rdiff_host." ;;
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255 ) msgBox "$rdiff_title: error" "Failed to connect to $rdiff_user@$rdiff_host. Check hostname, username, and password. Also, make sure sshd is running on the destination host." ;;
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* ) msgBox "$rdiff_title: error" "Unexpected error." ;;
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esac
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return
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else
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echo "Done. hit return to continue"
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read
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fi
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else
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echo "root@localhost is already in authorized_keys of $rdiff_user@$rdiff_host."
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echo "Hit return to continue."
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read
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fi
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# test to see if the remote rdiff backup directory exists and is writable
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echo "Testing to see if remote rdiff backup directory exists and is writable"
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ssh $rdiff_user@$rdiff_host "test -d ${rdiff_directory}"
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if [ $? = 0 ]; then
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ssh $rdiff_user@$rdiff_host "test -w $rdiff_directory"
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if [ $? != 0 ]; then
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msgBox "destination directory is not writable!" "The remote destination directory is not writable by the user you specified. Please fix the permissions on the directory and then try again."
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remote_status=failed
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fi
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else
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booleanBox "Remote directory does not exist" "The destination backup directory does not exist, do you want me to create it for you?"
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if [ $? = 0 ]; then
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ssh $rdiff_user@$rdiff_host "mkdir -p ${rdiff_directory}"
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result=$?
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case $result in
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0) msgBox "$rdiff_title: success" "Creation of the remote destination directory was a success!";;
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1) msgBox "$rdiff_title: error" "Connected successfully to $rdiff_user@$rdiff_host, but was unable to create the destination directory, check the directory permissions."
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remote_status=failed;;
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255) msgBox "$rdiff_title: error" "Failed to connect to $rdiff_user@$rdiff_host. Check hostname, username, and password. Also, make sure sshd is running on the destination host."
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remote_status=failed;;
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*) msgBox "$rdiff_title: error" "Unexpected error."
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remote_status=failed;;
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esac
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fi
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fi
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if [ "$remote_status" = "ok" ]; then
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do_rdiff_con
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fi
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}
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do_rdiff_con() {
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echo "Checking for local install of rdiff-backup"
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require_packages rdiff-backup
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echo "Testing to make sure destination has rdiff-backup installed and is compatible."
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remote_result=`/usr/bin/rdiff-backup --test-server $rdiff_user@$rdiff_host::/ 2>&1 >&-`
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if [ $? -ne 0 ]; then
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echo $remote_result | grep -q "command not found"
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if [ $? -eq 0 ]; then
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if [ "$rdiff_user" = "root" ]; then
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booleanBox "install rdiff-backup?" "It seems like the remote machine does not have rdiff-backup installed, I can attempt to install rdiff-backup on the remote machine.\n\n\nDo you want me to attempt this now?"
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if [ $? = 0 ]; then
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ssh $rdiff_user@$rdiff_host 'apt-get install rdiff-backup'
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result=$?
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echo "Hit return to continue."
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read
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case $result in
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0) msgBox "$rdiff_title: success" "Installation of rdiff-backup was a success!"
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do_rdiff_con;;
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1) msgBox "$rdiff_title: error" "Connected successfully to $rdiff_user@$rdiff_host, but was unable to install the package for some reason.";;
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255) msgBox "$rdiff_title: error" "Failed to connect to $rdiff_user@$rdiff_host. Check hostname, username, and password. Also, make sure sshd is running on the destination host.";;
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*) msgBox "$rdiff_title: error" "Unexpected error.";;
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esac
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return
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fi
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else
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booleanBox "install rdiff-backup" "Please install rdiff-backup on the remote machine, this cannot be done automatically, as the remote user in your configuration is not root. \n\nIf you have installed rdiff-backup on the remote machine and you are getting this error, then there is a version incompatibility between that version and the local version.\n\nPlease resolve this problem and then try connecting again.\n\n\n\nTry connecting again?"
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if [ $? = 0 ]; then
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do_rdiff_con
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else
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return
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fi
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fi
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else
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msgBox "incompatible versions of rdiff-backup" "It looks like rdiff-backup is installed on the remote machine, but it may be an incompatible version with the one installed locally, or something else is amiss.\n\nPlease resolve this problem and then try connecting again.\n\n\nTry connecting again?"
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if [ $? = 0 ]; then
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do_rdiff_con
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else
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return
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fi
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fi
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else
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echo "SUCCESS: Everything looks good!"
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echo "Hit return to continue."
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read
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fi
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_con_done="(DONE)"
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setDefault finish
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}
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do_rdiff_finish() {
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get_next_filename $configdirectory/90.rdiff
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cat > $next_filename <<EOF
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# options = --force
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# when = everyday at 02
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[source]
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type = local
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keep = $rdiff_keep
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# A few notes about includes and excludes:
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# 1. include, exclude and vsinclude statements support globbing with '*'
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# 2. Symlinks are not dereferenced. Moreover, an include line whose path
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# contains, at any level, a symlink to a directory, will only have the
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# symlink backed-up, not the target directory's content. Yes, you have to
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# dereference yourself the symlinks, or to use 'mount --bind' instead.
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# Example: let's say /home is a symlink to /mnt/crypt/home ; the following
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# line will only backup a "/home" symlink ; neither /home/user nor
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# /home/user/Mail will be backed-up :
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# include = /home/user/Mail
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# A workaround is to 'mount --bind /mnt/crypt/home /home' ; another one is to
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# write :
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# include = /mnt/crypt/home/user/Mail
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# 3. All the excludes come after all the includes. The order is not otherwise
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# taken into account.
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# files to include in the backup
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EOF
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## includes ##
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if [ "$host_or_vservers" == host -o "$host_or_vservers" == both ]; then
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set -o noglob
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for ((i=0; i < ${#rdiff_includes[@]} ; i++)); do
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echo "include = ${rdiff_includes[$i]}" >> $next_filename
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done
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set +o noglob
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fi
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if [ "$host_or_vservers" == vservers -o "$host_or_vservers" == both ]; then
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cat >> $next_filename <<EOF
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#
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# If vservers = yes in /etc/backupninja.conf then the following variables can
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# be used:
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# vsnames = all | <vserver1> <vserver2> ... (default = all)
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# vsinclude = <path>
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# vsinclude = <path>
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# ...
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# Any path specified in vsinclude is added to the include list for each vserver
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# listed in vsnames (or all if vsnames = all, which is the default).
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#
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# For example, vsinclude = /home will backup the /home directory in every
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# vserver listed in vsnames. If you have 'vsnames = foo bar baz', this
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# vsinclude will add to the include list /vservers/foo/home, /vservers/bar/home
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# and /vservers/baz/home.
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# Vservers paths are derived from $VROOTDIR.
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EOF
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set -o noglob
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echo -e "vsnames = $selected_vservers\n" >> $next_filename
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for i in $rdiff_vsincludes; do
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echo "vsinclude = $i" >> $next_filename
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done
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set +o noglob
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fi
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## excludes ##
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set -o noglob
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for ((i=0; i < ${#rdiff_excludes[@]} ; i++)); do
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echo exclude = ${rdiff_excludes[$i]} >> $next_filename
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done
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set +o noglob
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cat >> $next_filename <<EOF
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######################################################
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## destination section
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## (where the files are copied to)
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[dest]
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type = remote
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directory = $rdiff_directory
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host = $rdiff_host
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user = $rdiff_user
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EOF
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chmod 600 $next_filename
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}
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rdiff_main_menu() {
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while true; do
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srcitem="choose files to include & exclude $_src_done"
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destitem="configure backup destination $_dest_done"
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conitem="set up ssh keys and test remote connection $_con_done"
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advitem="edit advanced settings $_adv_done"
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menuBox "$rdiff_title" "choose a step:" \
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src "$srcitem" \
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dest "$destitem" \
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conn "$conitem" \
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finish "finish and create config file"
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[ $? = 0 ] || return
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result="$REPLY"
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case "$result" in
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"src") do_rdiff_src;;
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"dest") do_rdiff_dest;;
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"conn") do_rdiff_ssh_con;;
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"adv") do_rdiff_adv;;
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"finish")
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if [[ "$_con_done$_dest_done$_src_done" != "(DONE)(DONE)(DONE)" ]]; then
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msgBox "$rdiff_title" "You cannot create the configuration file until the other steps are completed."
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else
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do_rdiff_finish
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return
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fi
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;;
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esac
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done
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}
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rdiff_wizard() {
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# Global variables
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rdiff_title="rdiff-backup action wizard"
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_src_done=
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_dest_done=
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_con_done=
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_adv_done=
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rdiff_keep=60D
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rdiff_directory=/backup/`hostname`
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rdiff_type=remote
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rdiff_user=
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rdiff_host=
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# Global variables whose '*' shall not be expanded
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set -o noglob
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rdiff_includes=(/var/spool/cron/crontabs /var/backups /etc /root /home /usr/local/*bin /var/lib/dpkg/status*)
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rdiff_excludes=(/home/*/.gnupg /home/*/.local/share/Trash /home/*/.Trash /home/*/.thumbnails /home/*/.beagle /home/*/.aMule /home/*/gtk-gnutella-downloads /var/cache/backupninja/duplicity)
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rdiff_vsincludes=
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set +o noglob
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rdiff_main_menu
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}
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