#!/bin/bash

# invoked by cron as root on each web node

exec 2>&1

# drop any tokens; use only users' cgi tokens
kdestroy > /dev/null 2>&1
unlog

#VERBOSE=true
if [ -z "$VERBOSE" ]; then
    VERBOSE=false
fi

LOCAL_LOG_DIR=/var/log/apache2/user
KEYTAB_DIR=/etc/keytabs/user.daemon
AFS_USER_DIR=/afs/hcoop.net/user
ERROR=no

# Iterate through logs for each user
for A in $(find $LOCAL_LOG_DIR -mindepth 3 -maxdepth 3 -print); do
    USER=`basename $A`
    PATHBITS=`echo $USER | head -c 1`/`echo $USER | head -c 2`/$USER
    USER_HOME=$AFS_USER_DIR/$PATHBITS
    LOG_SRC=$A/apache/log/$(hostname)
    LOG_DEST=$USER_HOME/.logs/apache/$(hostname)

    # Skip deleted or empty log directories
    # Possible inefficiency? (ls entire directory*400+ dirs)
    if test ! -d "$LOG_SRC" || ! ls "$LOG_SRC"/*/*.log >/dev/null 2>&1; then
        if test "$VERBOSE" = "true"; then
		echo "Skipping $USER (deleted or empty log dir $LOG_SRC)"
        fi
        continue
    fi

    # Skip people who have unreadable log subdirectories
    # This test is broken! --clinton
    if test -d "$USER_HOME/.logs" && \
        ! ls "$USER_HOME/.logs" >/dev/null 2>&1; then
        if test "$VERBOSE" = "true"; then
		echo "Skipping $USER (unreadable log dir $USER_HOME/.logs)"
        fi
        continue
    fi

    # Skip people who do not have keytabs
    if test ! -f "$KEYTAB_DIR/$USER"; then
        if test "$VERBOSE" = "true"; then
		echo "Skipping $USER (missing keytab $KEYTAB_DIR/$USER)"
        fi
        continue
    fi

    if test "$VERBOSE" = "true"; then
        echo
        echo "=============================================================================="
        echo "syncing logs for $USER from $LOG_SRC"
        echo "  to $LOG_DEST ..."
    fi

    if test ! -d "$USER_HOME/.logs/apache"; then
        echo "Error: $USER_HOME/.logs/apache does not exist, please make it"
#        ERROR=yes
# We will assume that people know what they are doing when they
# delete their ~/.logs/apache directory ....
# This is perhaps a bad assumption --clinton
        if test "$VERBOSE" = "true"; then
		echo "Skipping $USER (no $LOG_DEST directory)"
        fi
        continue
    else
	# LOG_SRC/* is important: don't remove log files just because a vhost is gone
	k5start -qtU -f $KEYTAB_DIR/$USER -- rsync -a --no-owner --no-group --delete $LOG_SRC/* $LOG_DEST/
	test "$VERBOSE" = "true" && echo "  done."
    fi
done

if test "$ERROR" = "yes"; then
    exit 1
else
    exit 0
fi