#!/bin/bash
# On Solaris you might need to change the line above to:
#!/usr/bin/bash

# ch.indymedia.org fast mirror pull script

# See also:
# - http://docs.indymedia.org/view/Sysadmin/MirrorHowTo

# this script assumes the rsync base address is
# rsync://$RSYNC_SERVER/$SITE

# On Solaris you need to set the paths
# there seems to be no for this on Linux...
#PATH="/usr/local/gcc-2.95.3/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/usr/ccs/bin:/usr/ucb"
#LD_LIBRARY_PATH="/usr/local/gcc-2.95.3/lib:/usr/local/lib:/usr/local/lib/mysql:/usr/lib"

# this script uses lockfile which comes with procmail
# for file locking: apt-get install procmail
LOCKFILE_BINARY="/usr/bin/lockfile"

# test if the lockfile binary can be found
if [ ! -e "$LOCKFILE_BINARY" ]
  then
    echo "$LOCKFILE_BINARY not found, please install the procmail package."
    echo "On a Debian server running 'apt-get install procmail' should do "
    echo "the trick, on a Fedora server 'yum install procmail', for other "
    echo "distros please consult your sysadmin. " 
    echo ""
    echo "If you do have procmail installed then please set the "
    echo "LOCKFILE_BINARY variable to point to the location of the lockfile "
    echo "binary. "
  else

  # the site we are getting
  SITE="ch.indymedia.org"
  # the rsync server we are using
  # rsync.indymedia.org.uk is the primary server, for initial updates please
  # use the secondary server, rsync2.indymedia.org.uk
  RSYNC_SERVER="rsync.ch.indymedia.org"
  
  # set this to the location of the mirror on your filesystem
  DESTINATION_BASE="/var/www/$SITE"
  
  # check that we have write perms for the site
  if [ ! -w "$DESTINATION_BASE" ] 
    then
      echo "$DESTINATION_BASE needs to be writable by you."
    else 
  
    # the user running this script needs to have 
    # write permissions for the lockfile
    LOCKFILE="$HOME/`basename $0`.$SITE.lock"
  
    # if the $LOCKFILE exists then exit
    # the lockfile is read only
    # the timeout is set to 2 hours (7200 secs)
    # if the lockfile is older than this it will be 
    # removed
    $LOCKFILE_BINARY -r 1 -l 7200 $LOCKFILE || exit 23
    
    # check that the lock file is writable
    echo "Starting a fast sync for $SITE from $RSYNC_SERVER"; echo
  
    # our rsync command
    RSYNC="/usr/bin/rsync --timeout=360 -CLrptzvu"

    # exclude the tmp directory
    EXCLUDE_TMP=" --exclude=tmp"
  
    # exclude thinsg that are not often updated
    for a in img en rtsp 
      do
        EXCLUDE_STATIC="$EXCLUDE_STATIC --exclude=$a"
    done
  
    # topic excludes
    for a in anticapglob antifa chiapas eco fem g8 guerre logement medias press \
             repression sanspap trash war wef 
      do
        for b in de demix fr frmix it itmix 
          do
            EXCLUDE_TOPICS="$EXCLUDE_TOPICS --exclude=$b/$a"
        done
    done
  
    # generate exclude lists for past years
    THIS_YEAR=`date +%Y`
    LAST_YEAR=`expr $THIS_YEAR - 1`
    i=$LAST_YEAR
    while [ $i -gt 1999 ]
      do
        # media content 
        for a in icon images media  
          do
            EXCLUDE_YEARS="$EXCLUDE_YEARS --exclude=$a/$i"
        done
        # lang files 
        for a in de demix fr frmix it itmix 
          do
            EXCLUDE_YEARS="$EXCLUDE_YEARS --exclude=$a/$i" 
        done
        i=`expr $i - 1`
    done
   
    # generate exclude lists for months in this year
    THIS_MONTH=`date +%m`
    LAST_MONTH=`expr $THIS_MONTH - 1` 
    i=$LAST_MONTH
    while [ $i -gt 0 ]    
      do
        # if the month has a single digit
        if [ $LAST_MONTH -lt 10 ]; then
          # media content 
          for a in icon images media 
            do
              EXCLUDE_MONTHS="$EXCLUDE_MONTHS --exclude=$a/$THIS_YEAR/0$i"
          done
          # lang files 
          for a in de demix fr frmix it itmix 
                   
            do
              EXCLUDE_MONTHS="$EXCLUDE_MONTHS --exclude=$a/$THIS_YEAR/0$i" 
          done
        else
          # media content 
          for a in icon images media 
            do
              EXCLUDE_MONTHS="$EXCLUDE_MONTHS --exclude=$a/$THIS_YEAR/$i"
          done
          # lang files 
          for a in de demix fr frmix it itmix 
            do
              EXCLUDE_MONTHS="$EXCLUDE_MONTHS --exclude=$a/$THIS_YEAR/$i" 
          done
        fi
        i=`expr $i - 1`
    done
  
    # lets do some stuff 
    echo ${RSYNC} ${EXCLUDE_TMP} ${EXCLUDE_STATIC} ${EXCLUDE_TOPICS} \
             ${EXCLUDE_YEARS} ${EXCLUDE_MONTHS} \
             rsync://${RSYNC_SERVER}/${SITE}/ ${DESTINATION_BASE}/
      
    # delete the lockfile
    rm -vf $LOCKFILE
  
  fi

fi