410 lines
13 KiB
Bash
410 lines
13 KiB
Bash
#!/bin/bash
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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 General Public License as published by
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# the Free Software Foundation; either version 2 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 General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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# This script converts all db files of a cyrus installation from their
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# existing format to the format required by the current installation.
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# The format of current db files is determined using the 'file' command
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# with a magic file added for skiplist db, the new format is read from
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# a config file usually in /usr/share/cyrus-imapd/rpm/db.cfg, which is
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# created while compiling. After converting, the db.cfg file is
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# copied to a cache file usually at /var/lib/imap/rpm/db.cfg.cache to
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# allow bypassing this converting script if both files are identical.
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# While this is a bit less secure, it may be useful on big server where
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# db converting is done automatically.
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#
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# This script can safely be run as root, it will reexec itself as user
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# cyrus if needed.
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#
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# author: Simon Matter, Invoca Systems <simon.matter@invoca.ch>
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# changelog
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# v1.0.1, Oct 22 2002 Simon Matter <simon.matter@invoca.ch>
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# - added two-step conversion method
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#
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# v1.0.2, Jan 10 2003 Simon Matter <simon.matter@invoca.ch>
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# - fixed a bug where cvt_cyrusdb was called to convert empty or
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# nonexistent files
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#
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# v1.0.3, Mar 14 2003 Simon Matter <simon.matter@invoca.ch>
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# - fixed a problem with new versions of the file command
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#
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# v1.0.4
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# - added GPL license
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#
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# v1.0.5, May 02 2003 Simon Matter <simon.matter@invoca.ch>
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# - modified exec path
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#
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# v1.0.6, Jul 18 2003 Simon Matter <simon.matter@invoca.ch>
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# - changed db3 to berkeley
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# - added new db backends for 2.2
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#
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# v1.0.7, Jan 23 2004 Simon Matter <simon.matter@invoca.ch>
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# - included some modifications from Luca Olivetti <luca@olivetti.cjb.net>
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# - added masssievec functionality
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#
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# v1.0.8, Jan 28 2004 Simon Matter <simon.matter@invoca.ch>
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# - convert sieve scripts to UTF-8 before calling masssievec
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#
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# v1.0.9, Jan 29 2004 Simon Matter <simon.matter@invoca.ch>
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# - convert sieve scripts to UTF-8 only if sievec failed before
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#
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# v1.0.10, Feb 24 2004 Simon Matter <simon.matter@invoca.ch>
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# - change su within init script to get input from
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# /dev/null, this prevents hang when running in SELinux
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#
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# v1.0.11, Mar 02 2004 Simon Matter <simon.matter@invoca.ch>
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# - fixed SELinux fix
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#
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# v1.0.12, Dec 16 2004 Simon Matter <simon.matter@invoca.ch>
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# - use runuser instead of su if available
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#
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# v1.0.13, Jul 15 2005 Simon Matter <simon.matter@invoca.ch>
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# - don't use flat in the two step conversion, use skiplist instead
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#
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# v1.0.14, Jul 18 2005 Simon Matter <simon.matter@invoca.ch>
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# - replace the order of the magic files in the file call to make
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# sure skiplist is detected correctly.
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#
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# v1.0.15, Aug 17 2005 Simon Matter <simon.matter@invoca.ch>
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# - add functionality to export all berkeley db files to skiplist
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#
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# v1.1.0, Aug 18 2005 Simon Matter <simon.matter@invoca.ch>
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# - fix export functionality, try to recover Berkeley databases
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# as much as possible before any conversion.
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#
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# v1.1.1, Dec 05 2005 Simon Matter <simon.matter@invoca.ch>
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# - run db_checkpoint in background with a timeout to prevent
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# that cyrus-imapd doesn't start at all if it hangs.
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#
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# v1.1.2, Dec 06 2005 Simon Matter <simon.matter@invoca.ch>
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# - make handling of db_checkpoint more robust
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#
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# v1.2.0, Jan 12 2006 Simon Matter <simon.matter@invoca.ch>
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# - adopt for cyrus-imapd-2.3
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#
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# v1.2.1, Jan 13 2006 Simon Matter <simon.matter@invoca.ch>
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# - code cleanup
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#
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# v1.2.2, Nov 29 2007 Simon Matter <simon.matter@invoca.ch>
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# - add ability to handle "@include" options in imapd.conf, patch
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# provided by Tim Bannister
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#
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# v1.2.3, Feb 07 2008 Simon Matter <simon.matter@invoca.ch>
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# - add ability to handle tabs in imapd.conf, patch provided
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# by Franz Knipp
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# - disable default values for some config options like sievedir
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#
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# v1.2.4, Apr 23 2008 Simon Matter <simon.matter@invoca.ch>
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# - add support for statuscache.db
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#
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# v1.3.0, Sep 29 2008 Simon Matter <simon.matter@invoca.ch>
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# - add multi-instance support
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#
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# v1.3.1, Oct 09 2008 Simon Matter <simon.matter@invoca.ch>
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# - improve variable handling
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#
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# v1.3.2, May 26 2009 Simon Matter <simon.matter@invoca.ch>
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# - add some sanity checks to multi-instance support
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#
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# v1.3.3, May 27 2009 Simon Matter <simon.matter@invoca.ch>
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# - make some cosmetic changes
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#
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# v1.3.4, Dec 22 2009 Simon Matter <simon.matter@invoca.ch>
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# - add support for user_deny.db
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VERSION=1.3.4
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PIDFILE=/var/run/cyrus-master${INSTANCE}.pid
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# instance config
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CYRUSCONF=/etc/cyrus${INSTANCE}.conf
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IMAPDCONF=/etc/imapd${INSTANCE}.conf
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# make sure what we have is a valid instance
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# and that config files are present
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if [ -n "$INSTANCE" ]; then
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[ -L /etc/rc.d/init.d/${BASENAME} ] || exit 0
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fi
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[ -f $CYRUSCONF ] || exit 0
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[ -f $IMAPDCONF ] || exit 0
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if [ -f $PIDFILE ]; then
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read CYRUS_PID < $PIDFILE
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if [ -n "$CYRUS_PID" ]; then
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if ps -p $CYRUS_PID > /dev/null 2>&1; then
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echo "ERROR: cyrus-master is running, unable to convert mailboxes!"
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exit 1
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fi
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fi
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fi
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if [ ! -f $IMAPDCONF ]; then
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echo "ERROR: configuration file '${IMAPDCONF}' not found, exiting!"
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exit 1
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fi
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# fallback to su if runuser not available
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if [ -x /sbin/runuser ]; then
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RUNUSER=runuser
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else
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RUNUSER=su
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fi
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# force cyrus user for security reasons
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if [ ! $(whoami) = "cyrus" ]; then
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exec $RUNUSER - cyrus -c "cd $PWD < /dev/null ; INSTANCE=$INSTANCE $0 $*"
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fi
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# special function for migration
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EXPORT=$1
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# files get mode 0600
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umask 166
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# show version info in log files
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echo "cvt_cyrusdb_all version: $VERSION"
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# expand_config <path>
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# handle "@include" sections from imapd style config file
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expand_config() {
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while read line; do
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if printf "%s\n" "${line}" | grep -q '^@include:'; then
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expand_config "$( printf "%s\n" "${line}" | cut -d : -f 2- | sed -e 's/^[\t ]*//' )"
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else
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printf "%s\n" "${line}"
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fi
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done < $1
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}
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# get_config <config> [<default>]
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# extracts config option from config file
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get_config() {
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searchstr=$1
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if config="$(expand_config $IMAPDCONF | egrep "^${searchstr}:")"; then
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CFGVAL="$(printf "%s\n" "$config" | cut -d : -f 2- | sed -e 's/^[\t ]*//')"
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else
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if [ -z "$2" ]; then
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echo "ERROR: config option '$1' not found in ${IMAPDCONF}, exiting!" 1>&2
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return 1
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fi
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CFGVAL="$2"
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fi
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echo "get_config ${1}: $CFGVAL" 1>&2
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echo "$CFGVAL"
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}
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# where to find files and directories
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data_dir=/usr/share/cyrus-imapd/rpm
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lib_dir=/usr/lib/cyrus-imapd
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system_magic=$(file --version | awk '/magic file/ {print $4}')
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cyrus_magic=${data_dir}/magic
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cvt_cyrusdb=${lib_dir}/cvt_cyrusdb
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sievec=${lib_dir}/sievec
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masssievec=${lib_dir}/masssievec
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imap_prefix=$(get_config configdirectory) || exit 1
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sieve_dir=$(get_config sievedir) || exit 1
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db_cfg=${data_dir}/db.cfg
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db_current=${imap_prefix}/rpm/db.cfg.current
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db_cache=${imap_prefix}/rpm/db.cfg.cache
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# source default db backend config
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. $db_cfg
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# get configured db backend config
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duplicate_db=$(get_config duplicate_db $duplicate_db) || exit 1
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mboxlist_db=$(get_config mboxlist_db $mboxlist_db) || exit 1
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seenstate_db=$(get_config seenstate_db $seenstate_db) || exit 1
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subscription_db=$(get_config subscription_db $subscription_db) || exit 1
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tlscache_db=$(get_config tlscache_db $tlscache_db) || exit 1
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annotation_db=$(get_config annotation_db $annotation_db) || exit 1
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mboxkey_db=$(get_config mboxkey_db $mboxkey_db) || exit 1
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ptscache_db=$(get_config ptscache_db $ptscache_db) || exit 1
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quota_db=$(get_config quota_db $quota_db) || exit 1
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statuscache_db=$(get_config statuscache_db $statuscache_db) || exit 1
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userdeny_db=$(get_config userdeny_db $userdeny_db) || exit 1
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# remember current db backend config
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{
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echo "duplicate_db=${duplicate_db}"
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echo "mboxlist_db=${mboxlist_db}"
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echo "seenstate_db=${seenstate_db}"
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echo "subscription_db=${subscription_db}"
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echo "tlscache_db=${tlscache_db}"
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echo "annotation_db=${annotation_db}"
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echo "mboxkey_db=${mboxkey_db}"
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echo "ptscache_db=${ptscache_db}"
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echo "quota_db=${quota_db}"
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echo "statuscache_db=${statuscache_db}"
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echo "userdeny_db=${userdeny_db}"
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echo "sieve_version=${sieve_version}"
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} | sort > $db_current
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# file_type <file>
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file_type() {
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this_type=$(file -b -m "${cyrus_magic}:${system_magic}" "$1" 2> /dev/null)
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if echo "$this_type" | grep -qi skip > /dev/null 2>&1; then
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echo skiplist
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elif echo "$this_type" | grep -qi text > /dev/null 2>&1; then
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echo flat
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else
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echo berkeley
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fi
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}
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# cvt_file <file> <db>
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cvt_file() {
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target="$1"
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new_db="$2"
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if [ -s "$target" ]; then
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old_db=$(file_type "$target")
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if [ ! "$old_db" = "$new_db" ]; then
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# The two-step conversion is paranoia against the filenames being encoded
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# inside the database or logfiles (berkeley does this, for example).
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rm -f "${target}.skiplist"
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if [ "$old_db" = "skiplist" ]; then
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cp -a "$target" "${target}.skiplist"
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else
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$cvt_cyrusdb -C $IMAPDCONF "$target" "$old_db" "${target}.skiplist" skiplist
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fi
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RETVAL=$?
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ERRVAL=$(( $ERRVAL + $RETVAL ))
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if [ $RETVAL -eq 0 ]; then
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rm -f "$target"
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if [ -s "${target}.skiplist" ]; then
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if [ "$new_db" = "skiplist" ]; then
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cp -a "${target}.skiplist" "$target"
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else
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$cvt_cyrusdb -C $IMAPDCONF "${target}.skiplist" skiplist "$target" "$new_db"
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fi
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fi
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RETVAL=$?
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ERRVAL=$(( $ERRVAL + $RETVAL ))
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if [ $RETVAL -eq 0 ]; then
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rm -f "${target}.skiplist"
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else
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echo "ERROR: unable to convert ${target}.skiplist from skiplist to $new_db"
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fi
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else
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echo "ERROR: unable to convert $target from $old_db to skiplist"
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fi
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fi
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fi
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}
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# cvt_to_utf8 <file>
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cvt_to_utf8() {
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target="$1"
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if [ -s "$target" ]; then
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if ! $sievec -C $IMAPDCONF "$target" "${target}.sievec"; then
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iconv --from-code=ISO-8859-1 --to-code=UTF-8 --output="${target}.UTF-8" "$target"
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if [ -s "${target}.UTF-8" ]; then
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# preserve timestamp
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touch --reference="${target}" "${target}.UTF-8"
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mv -f "${target}.UTF-8" "$target"
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else
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ERRVAL=$(( $ERRVAL + 1 ))
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fi
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fi
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rm -f "${target}.sievec"
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fi
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}
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ERRVAL=0
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# make sure our Berkeley databases are in a sane state
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# wait for db_checkpoint to end successfully or kill it after a timeout
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db_checkpoint -v -1 -h ${imap_prefix}/db &
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DB_CHECK_PID=$!
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CNT=0
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while [ $CNT -lt 60 ]; do
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if ! kill -0 $DB_CHECK_PID > /dev/null 2>&1; then
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break
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fi
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sleep 1
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let CNT+=1
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done
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if kill -0 $DB_CHECK_PID > /dev/null 2>&1; then
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kill -USR1 $DB_CHECK_PID > /dev/null 2>&1
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sleep 1
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kill -KILL $DB_CHECK_PID > /dev/null 2>&1
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wait $DB_CHECK_PID > /dev/null 2>&1
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fi
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# do a normal recovery
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db_recover -v -h ${imap_prefix}/db
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RETVAL=$?
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if [ $RETVAL -ne 0 ]; then
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# try a catastrophic recovery instead of normal recovery
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db_recover -v -c -h ${imap_prefix}/db
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RETVAL=$?
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ERRVAL=$(( $ERRVAL + $RETVAL ))
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if [ $RETVAL -ne 0 ]; then
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echo "ERROR: catastrophic recovery of Berkeley databases failed"
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fi
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fi
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if [ "$EXPORT" = "export" ]; then
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# convert all db files to portable format for migration
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# TODO: quota_db, we don't touch it for now
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cvt_file ${imap_prefix}/deliver.db "skiplist"
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cvt_file ${imap_prefix}/mailboxes.db "skiplist"
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cvt_file ${imap_prefix}/tls_sessions.db "skiplist"
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cvt_file ${imap_prefix}/annotations.db "skiplist"
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cvt_file ${imap_prefix}/ptclient/ptscache.db "skiplist"
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cvt_file ${imap_prefix}/statuscache.db "skiplist"
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cvt_file ${imap_prefix}/user_deny.db "flat"
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rm -vf ${imap_prefix}/db/log.*
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rm -vf ${imap_prefix}/db/__db.*
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else
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# always convert db files which have been converted to skiplist
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# TODO: quota_db, we don't touch it for now
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cvt_file ${imap_prefix}/deliver.db "$duplicate_db"
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cvt_file ${imap_prefix}/mailboxes.db "$mboxlist_db"
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cvt_file ${imap_prefix}/tls_sessions.db "$tlscache_db"
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cvt_file ${imap_prefix}/annotations.db "$annotation_db"
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cvt_file ${imap_prefix}/ptclient/ptscache.db "$ptscache_db"
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cvt_file ${imap_prefix}/statuscache.db "$statuscache_db"
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cvt_file ${imap_prefix}/user_deny.db "$userdeny_db"
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# do we have to convert all databases?
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if ! cmp -s $db_current $db_cache; then
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# we treat sieve scripts the same way like db files
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find ${sieve_dir}/ -name "*.script" -type f | while read db_file trash; do
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cvt_to_utf8 "$db_file"
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done
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$masssievec $sievec $IMAPDCONF
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# convert all db files left
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find ${imap_prefix}/user/ -name "*.seen" -type f | while read db_file trash; do
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cvt_file "$db_file" "$seenstate_db"
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done
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find ${imap_prefix}/user/ -name "*.sub" -type f | while read db_file trash; do
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cvt_file "$db_file" "$subscription_db"
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done
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find ${imap_prefix}/user/ -name "*.mboxkey" -type f | while read db_file trash; do
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cvt_file "$db_file" "$mboxkey_db"
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done
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fi
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fi
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# update the config cache file so we can check whether something has changed
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if [ $ERRVAL -eq 0 ]; then
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mv -f $db_current $db_cache
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else
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rm -f $db_cache
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rm -f $db_current
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fi
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exit $ERRVAL
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