427 lines
15 KiB
Bash
Executable File
427 lines
15 KiB
Bash
Executable File
#!/bin/bash
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#
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# .---. . .
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# | | |
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# |--- .--. .-. .-. .-.| .-. .--.--. |.-. .-. .--. .-.
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# | | (.-' (.-' ( | ( )| | | | )( )| | (.-'
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# ' ' --' --' -' - -' ' ' -' -' -' ' - --'
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#
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# Freedom in the Cloud
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#
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# Backup to remote servers - the web of backups
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# License
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# =======
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#
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# Copyright (C) 2015-2016 Bob Mottram <bob@freedombone.net>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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PROJECT_NAME='freedombone'
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COMPLETION_FILE=$HOME/${PROJECT_NAME}-completed.txt
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CONFIGURATION_FILE=$HOME/${PROJECT_NAME}.cfg
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BACKUP_EXTRA_DIRECTORIES=/root/backup-extra-dirs.csv
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ENABLE_VERIFICATION="no"
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export TEXTDOMAIN=${PROJECT_NAME}-backup-remote
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export TEXTDOMAINDIR="/usr/share/locale"
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PROJECT_INSTALL_DIR=/usr/local/bin
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if [ -f /usr/bin/${PROJECT_NAME} ]; then
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PROJECT_INSTALL_DIR=/usr/bin
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fi
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source $PROJECT_INSTALL_DIR/${PROJECT_NAME}-vars
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# utilities needed for backup commands
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UTILS_FILES=/usr/share/${PROJECT_NAME}/utils/${PROJECT_NAME}-utils-*
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for f in $UTILS_FILES
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do
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source $f
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done
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# Temporary location for data to be backed up to other servers
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SERVER_DIRECTORY=/root/remotebackup
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# get the version of Go being used
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GO_VERSION=$(cat /usr/share/${PROJECT_NAME}/utils/${PROJECT_NAME}-utils-go | grep 'GO_VERSION=' | head -n 1 | awk -F '=' '{print $2}')
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ADMIN_USERNAME=$(get_completion_param "Admin user")
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ADMIN_NAME=$(getent passwd $ADMIN_USERNAME | cut -d: -f5 | cut -d, -f1)
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ADMIN_EMAIL_ADDRESS=${ADMIN_USERNAME}@${HOSTNAME}
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if [ ! -f /etc/ssl/private/backup.key ]; then
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echo $"Creating backup key"
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${PROJECT_NAME}-addcert -h backup --dhkey 2048
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fi
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if [ ! -f /home/${ADMIN_USERNAME}/backup.list ]; then
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exit 1
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fi
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# MariaDB password
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DATABASE_PASSWORD=''
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if [ -f /root/dbpass ]; then
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DATABASE_PASSWORD=$(cat /root/dbpass)
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fi
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# local directory where the backup will be made
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if [ ! -d $SERVER_DIRECTORY ]; then
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mkdir $SERVER_DIRECTORY
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fi
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if [ ! -d $SERVER_DIRECTORY/backup ]; then
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mkdir -p $SERVER_DIRECTORY/backup
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fi
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# The name of a currently suspended site
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# Sites are suspended so that verification should work
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SUSPENDED_SITE=
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function suspend_site {
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# suspends a given website
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if [[ $ENABLE_VERIFICATION != "yes" ]]; then
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return
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fi
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SUSPENDED_SITE="$1"
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nginx_dissite $SUSPENDED_SITE
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service nginx reload
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}
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function restart_site {
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# restarts a given website
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if [ ! $SUSPENDED_SITE ]; then
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return
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fi
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nginx_ensite $SUSPENDED_SITE
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service nginx reload
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SUSPENDED_SITE=
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}
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function backup_configfiles {
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echo $"Backing up ${PROJECT_NAME} configuration files"
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temp_backup_dir=/root/tempbackupconfig
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if [ ! -d $temp_backup_dir ]; then
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mkdir -p $temp_backup_dir
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fi
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cp -f $CONFIGURATION_FILE $temp_backup_dir
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cp -f $COMPLETION_FILE $temp_backup_dir
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if [ -f $BACKUP_EXTRA_DIRECTORIES ]; then
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cp -f $BACKUP_EXTRA_DIRECTORIES $temp_backup_dir
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fi
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# nginx password hashes
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if [ -f /etc/nginx/.htpasswd ]; then
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cp -f /etc/nginx/.htpasswd $temp_backup_dir/htpasswd
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fi
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backup_directory_to_friend $temp_backup_dir configfiles
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}
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function backup_users {
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for d in /home/*/ ; do
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USERNAME=$(echo "$d" | awk -F '/' '{print $3}')
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if [[ $(is_valid_user "$USERNAME") == "1" ]]; then
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# personal settings
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if [ -d /home/$USERNAME/personal ]; then
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echo $"Backing up personal settings for $USERNAME"
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backup_directory_to_friend /home/$USERNAME/personal personal/$USERNAME
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fi
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# gpg keys
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if [ -d /home/$USERNAME/.gnupg ]; then
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echo $"Backing up gpg keys for $USERNAME"
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backup_directory_to_friend /home/$USERNAME/.gnupg gnupg/$USERNAME
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fi
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# ssh keys
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if [ -d /home/$USERNAME/.ssh ]; then
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echo $"Backing up ssh keys for $USERNAME"
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backup_directory_to_friend /home/$USERNAME/.ssh ssh/$USERNAME
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fi
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# syncthing files
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if [ -d /home/$USERNAME/Sync ]; then
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echo $"Backing up syncthing files for $USERNAME"
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backup_directory_to_friend /home/$USERNAME/Sync syncthing/$USERNAME
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# ensure that device IDs will be backed up as part of user config settings
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if [ ! -d /home/$USERNAME/.config/syncthing ]; then
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mkdir -p /home/$USERNAME/.config/syncthing
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chown -R $USERNAME:$USERNAME /home/$USERNAME/.config
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fi
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if [ -f /home/$USERNAME/.syncthing-server-id ]; then
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cp /home/$USERNAME/.syncthing-server-id /home/$USERNAME/.config/syncthing
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chown -R $USERNAME:$USERNAME /home/$USERNAME/.config
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fi
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if [ -f /home/$USERNAME/.syncthingids ]; then
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cp /home/$USERNAME/.syncthingids /home/$USERNAME/.config/syncthing
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chown -R $USERNAME:$USERNAME /home/$USERNAME/.config
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fi
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fi
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# config files
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if [ -d /home/$USERNAME/.config ]; then
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echo $"Backing up config files for $USERNAME"
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backup_directory_to_friend /home/$USERNAME/.config config/$USERNAME
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fi
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# monkeysphere files
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if [ -d /home/$USERNAME/.monkeysphere ]; then
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echo $"Backing up monkeysphere files for $USERNAME"
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backup_directory_to_friend /home/$USERNAME/.monkeysphere monkeysphere/$USERNAME
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fi
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# fin files
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if [ -d /home/$USERNAME/.fin ]; then
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echo $"Backing up fin files for $USERNAME"
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backup_directory_to_friend /home/$USERNAME/.fin fin/$USERNAME
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fi
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# local files
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if [ -d /home/$USERNAME/.local ]; then
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echo $"Backing up local files for $USERNAME"
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backup_directory_to_friend /home/$USERNAME/.local local/$USERNAME
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fi
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# mutt settings
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if [ -f /home/$USERNAME/.muttrc ]; then
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echo $"Backing up Mutt settings for $USERNAME"
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if [ ! -d /home/$USERNAME/tempbackup ]; then
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mkdir -p /home/$USERNAME/tempbackup
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fi
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cp /home/$USERNAME/.muttrc /home/$USERNAME/tempbackup
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if [ -f /etc/Muttrc ]; then
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cp /etc/Muttrc /home/$USERNAME/tempbackup
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fi
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backup_directory_to_friend /home/$USERNAME/tempbackup mutt/$USERNAME
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fi
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# procmail settings
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if [ -f /home/$USERNAME/.procmailrc ]; then
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echo $"Backing up procmail settings for $USERNAME"
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if [ ! -d /home/$USERNAME/tempbackup ]; then
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mkdir -p /home/$USERNAME/tempbackup
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fi
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cp /home/$USERNAME/.procmailrc /home/$USERNAME/tempbackup
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backup_directory_to_friend /home/$USERNAME/tempbackup procmail/$USERNAME
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fi
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# spamassassin settings
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if [ -d /home/$USERNAME/.spamassassin ]; then
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echo $"Backing up spamassassin settings for $USERNAME"
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backup_directory_to_friend /home/$USERNAME/.spamassassin spamassassin/$USERNAME
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fi
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# email
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if [ -d /home/$USERNAME/Maildir ]; then
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echo $"Stopping mail server"
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systemctl stop exim4
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echo $"Creating an email archive"
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if [ ! -d /root/backupemail/$USERNAME ]; then
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mkdir -p /root/backupemail/$USERNAME
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fi
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tar -czvf /root/backupemail/$USERNAME/maildir.tar.gz /home/$USERNAME/Maildir
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echo $"Restarting mail server"
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systemctl start exim4
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echo $"Backing up emails for $USERNAME"
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backup_directory_to_friend /root/backupemail/$USERNAME mail/$USERNAME
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fi
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fi
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done
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}
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function backup_letsencrypt {
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if [ -d /etc/letsencrypt ]; then
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echo $"Backing up Lets Encrypt settings"
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backup_directory_to_friend /etc/letsencrypt letsencrypt
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fi
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}
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function backup_tor {
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if [ -d /etc/letsencrypt ]; then
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echo $"Backing up Tor settings"
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backup_directory_to_friend /var/lib/tor tor
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fi
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}
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function backup_certs {
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if [ -d /etc/ssl ]; then
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echo $"Backing up certificates"
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backup_directory_to_friend /etc/ssl ssl
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fi
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}
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function backup_mailing_list {
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if [ -d /var/spool/mlmmj ]; then
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echo $"Backing up the public mailing list"
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backup_directory_to_friend /var/spool/mlmmj mailinglist
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fi
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}
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function backup_web_server {
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if [ -d /etc/nginx ]; then
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echo $"Backing up web settings"
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backup_directory_to_friend /etc/nginx/sites-available web
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fi
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}
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function backup_admin_readme {
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if [ -f /home/$ADMIN_USERNAME/README ]; then
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echo $"Backing up README"
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if [ ! -d /home/$ADMIN_USERNAME/tempbackup ]; then
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mkdir -p /home/$ADMIN_USERNAME/tempbackup
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fi
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cp -f /home/$ADMIN_USERNAME/README /home/$ADMIN_USERNAME/tempbackup
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backup_directory_to_friend /home/$ADMIN_USERNAME/tempbackup readme
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fi
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}
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function backup_mariadb {
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if [ ${#DATABASE_PASSWORD} -gt 1 ]; then
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temp_backup_dir=/root/tempmariadb
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if [ ! -d $temp_backup_dir ]; then
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mkdir $temp_backup_dir
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fi
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mysqldump --password=$DATABASE_PASSWORD mysql user > $temp_backup_dir/mysql.sql
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if [ ! -s $temp_backup_dir/mysql.sql ]; then
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echo $"Unable to backup MariaDB settings"
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rm -rf $temp_backup_dir
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# Send a warning email
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echo $"Unable to export database settings" | mail -s "${PROJECT_NAME} backup to friends" $ADMIN_EMAIL_ADDRESS
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exit 653
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fi
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echo "$DATABASE_PASSWORD" > $temp_backup_dir/db
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chmod 400 $temp_backup_dir/db
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backup_directory_to_friend $temp_backup_dir mariadb
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fi
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}
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# Returns the filename of a key share
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function get_key_share {
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no_of_shares=$1
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USERNAME="$2"
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REMOTE_DOMAIN="$3"
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# Get a share index based on the supplied domain name
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# This ensures that the same share is always given to the same domain
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sharenumstr=$(md5sum <<< "$REMOTE_DOMAIN")
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share_index=$(echo $((0x${sharenumstr%% *} % ${no_of_shares})) | tr -d -)
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# get the filename
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share_files=(/home/$USERNAME/.gnupg_fragments/keyshare.asc.*)
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share_filename=${share_files[share_index]}
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echo "$share_filename"
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}
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function disperse_key_shares {
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USERNAME=$1
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REMOTE_DOMAIN=$2
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REMOTE_SSH_PORT=$3
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REMOTE_PASSWORD=$4
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REMOTE_SERVER=$5
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if [ -d /home/$USERNAME/.gnupg_fragments ]; then
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if [ $REMOTE_DOMAIN ]; then
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cd /home/$USERNAME/.gnupg_fragments
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no_of_shares=$(ls -afq keyshare.asc.* | wc -l)
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if (( no_of_shares > 1 )); then
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share_filename=$(get_key_share $no_of_shares "$USERNAME" "$REMOTE_DOMAIN")
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# create a temp directory containing the share
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temp_key_share_dir=/home/$USERNAME/tempkey
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temp_key_share_fragments=$temp_key_share_dir/.gnupg_fragments_${USERNAME}
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mkdir -p $temp_key_share_fragments
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cp $share_filename $temp_key_share_fragments/
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# copy the fragments directory to the remote server
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/usr/bin/sshpass -p "$REMOTE_PASSWORD" \
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scp -r -P $REMOTE_SSH_PORT $temp_key_share_fragments $REMOTE_SERVER
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if [ ! "$?" = "0" ]; then
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# Send a warning email
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echo "Key share to $REMOTE_SERVER failed" | \
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mail -s "${PROJECT_NAME} social key management" $MY_EMAIL_ADDRESS
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else
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# Send a confirmation email
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echo "Key ${share_filename} shared to $REMOTE_SERVER" | \
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mail -s "${PROJECT_NAME} social key management" $MY_EMAIL_ADDRESS
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fi
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# remove the temp file/directory
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shred -zu $temp_key_share_fragments/*
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rm -rf $temp_key_share_dir
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fi
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fi
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fi
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}
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TEST_MODE="no"
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if [[ "$1" == "test" ]]; then
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TEST_MODE="yes"
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fi
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backup_configfiles
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if [[ $TEST_MODE == "no" ]]; then
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backup_users
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backup_letsencrypt
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backup_tor
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backup_web_server
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backup_admin_readme
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backup_mariadb
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backup_certs
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backup_mailing_list
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backup_apps remote
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backup_extra_directories remote
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fi
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# For each remote server
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while read remote_server
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do
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# Get the server and its password
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# Format is:
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# username@domain <port number> /home/username <ssh password>
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REMOTE_SERVER=$(echo "${remote_server}" | awk -F ' ' '{print $1}')
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if [ $REMOTE_SERVER ]; then
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REMOTE_DOMAIN=$(echo "${remote_server}" | awk -F ' ' '{print $1}' | awk -F '@' '{print $2}')
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REMOTE_SSH_PORT=$(echo "${remote_server}" | awk -F ' ' '{print $2}')
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REMOTE_DIRECTORY=$(echo "${remote_server}" | awk -F ' ' '{print $3}')
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REMOTE_PASSWORD=$(echo "${remote_server}" | awk -F ' ' '{print $4}')
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NOW=$(date +"%Y-%m-%d %H:%M:%S")
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REMOTE_SERVER=$REMOTE_SERVER:$REMOTE_DIRECTORY
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echo "$NOW Starting backup to $REMOTE_SERVER" >> /var/log/remotebackups.log
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# Social key management
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for d in /home/*/ ; do
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USERNAME=$(echo "$d" | awk -F '/' '{print $3}')
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if [[ $(is_valid_user "$USERNAME") == "1" ]]; then
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disperse_key_shares $USERNAME $REMOTE_DOMAIN $REMOTE_SSH_PORT "$REMOTE_PASSWORD" $REMOTE_SERVER
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fi
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done
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if [[ $TEST_MODE == "yes" ]]; then
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echo "rsync -ratlzv --rsh=\"/usr/bin/sshpass -p '$REMOTE_PASSWORD' ssh -p $REMOTE_SSH_PORT -o StrictHostKeyChecking=no\" $SERVER_DIRECTORY/backup $REMOTE_SERVER"
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fi
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rsync -ratlzv --rsh="/usr/bin/sshpass -p \"$REMOTE_PASSWORD\" ssh -p $REMOTE_SSH_PORT -o StrictHostKeyChecking=no" $SERVER_DIRECTORY/backup $REMOTE_SERVER
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if [ ! "$?" = "0" ]; then
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echo "$NOW Backup to $REMOTE_SERVER failed" >> /var/log/remotebackups.log
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# Send a warning email
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echo "Backup to $REMOTE_SERVER failed" | mail -s "${PROJECT_NAME} backup to friends" $ADMIN_EMAIL_ADDRESS
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else
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echo "$NOW Backed up to $REMOTE_SERVER" >> /var/log/remotebackups.log
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fi
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fi
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done < /home/${ADMIN_USERNAME}/backup.list
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exit 0
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