#! /bin/bash
#	$Id: faxcron.sh.in 1088 2012-03-02 20:22:15Z faxguy $
#
# HylaFAX Facsimile Software
#
# Copyright (c) 1993-1996 Sam Leffler
# Copyright (c) 1993-1996 Silicon Graphics, Inc.
# HylaFAX is a trademark of Silicon Graphics
# 
# Permission to use, copy, modify, distribute, and sell this software and 
# its documentation for any purpose is hereby granted without fee, provided
# that (i) the above copyright notices and this permission notice appear in
# all copies of the software and related documentation, and (ii) the names of
# Sam Leffler and Silicon Graphics may not be used in any advertising or
# publicity relating to the software without the specific, prior written
# permission of Sam Leffler and Silicon Graphics.
# 
# THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
# EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
# WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
# 
# IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
# ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
# OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
# WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
# LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
# OF THIS SOFTWARE.
#

#
# Script to run periodically from cron:
#
# 0. Print transmit and receive statistics.
# 1. Purge info directory of old remote machine capabilities.
# 2. Purge old session logs from the log directory.
# 3. Purge old files in the received facsimile queue.
# 4. Notify about sites that currently have jobs rejected.
#

AGEINFO=30			# purge remote info after 30 days inactivity
AGELOG=30			# keep log info for last 30 days
AGERCV=7			# purge received facsimile after 7 days
AGETMP=1			# purge orphaned temp files after 1 day
FAXUSER=fax		# owner of log files
SPOOL=/var/spool/hylafax			# HylaFAX spool directory
LOGMODE=0644			# mode for log files
XFERLOG=etc/xferfaxlog		# HylaFAX xferfaxlog file location
LAST=etc/lastrun		# file where time+date of last run recorded

TEE=tee
UPDATE="date +'%D %H:%M' >$LAST"

while [ x"$1" != x"" ] ; do
    case $1 in
    -n)	    RM=":" TEE=":" CP=":" MV=":" CHOWN=":" CHMOD=":" UPDATE=":";;
    -l)	    shift; LASTRUN="$1";;
    -q)     shift; SPOOL="$1";;
    -info)  shift; AGEINFO="$1";;
    -log)   shift; AGELOG="$1";;
    -rcv)   shift; AGERCV="$1";;
    -tmp)   shift; AGETMP="$1";;
    -mode)  shift; LOGMODE="$1";;
    -*)	    echo "Usage: $0 [-n] [-l lastrun] [-q spool] [-info days] [-log days] [-rcv days] [-tmp days] [-mode logmode]"; exit 1;;
    esac
    shift
done

cd $SPOOL			# NB: everything below assumes this
. bin/common-functions

test -f etc/setup.cache || {
    SPOOL=`pwd`
    cat<<EOF

FATAL ERROR: $SPOOL/etc/setup.cache is missing!

The file $SPOOL/etc/setup.cache is not present.  This
probably means the machine has not been setup using the faxsetup(8C)
command.  Read the documentation on setting up HylaFAX before you
startup a server system.

EOF
    hfExit 1
}
. etc/setup.cache

RM="$RM -f"

# security
SetupPrivateTmp

JUNK=$TMPDIR/faxjunk$$         # temp file used multiple times
AWKTMP=$TMPDIR/faxawk$$                # temp file for awk program

test -z "$LASTRUN" && LASTRUN=`$CAT $LAST 2>/dev/null`

# hb beginn 2006-08-15
# convert $LASTRUN for iso 8601 output
cvtDateTime ()
{
     dmon=`echo "${1}" | cut -c1-2`
     dday=`echo "${1}" | cut -c4-5`
     dyear=`echo "${1}" | cut -c7-8`
     dtime=`echo "${1}" | cut -c10-15`
     echo "20${dyear}-${dmon}-${dday} ${dtime}"
}

#echo "Facsimile transmitted since $LASTRUN:"
echo "Facsimile transmitted since" `cvtDateTime "$LASTRUN"`":"
# hb end 2006-08-15

echo ""
$SBIN/xferfaxstats -since "$LASTRUN" 
echo ""

echo "Facsimile transmitted in the last seven days:"
echo ""
$SBIN/xferfaxstats -age 7
echo ""

# hb beginn 2006-08-15
# echo "Facsimile received since $LASTRUN:"
echo "Facsimile received since" `cvtDateTime "$LASTRUN"`":"
# hb end 200#6-08-15

echo ""
$SBIN/recvstats -since "$LASTRUN" 
echo ""

echo "Facsimile received in the last seven days:"
echo ""
$SBIN/recvstats -age 7
echo ""

echo "Report failed calls and associated session logs:"
$CAT>$AWKTMP<<'EOF'
#
# Sort array a[l..r]
#
function qsort(a, l, r) {
    i = l;
    k = r+1;
    item = a[l];
    for (;;) {
	while (i < r) {
            i++;
	    if (a[i] >= item)
		break;
        }
	while (k > l) {
            k--;
	    if (a[k] <= item)
		break;
        }
        if (i >= k)
	    break;
	t = a[i]; a[i] = a[k]; a[k] = t;
    }
    t = a[l]; a[l] = a[k]; a[k] = t;
    if (k != 0 && l < k-1)
	qsort(a, l, k-1);
    if (k+1 < r)
	qsort(a, k+1, r);
}

function cleanup(s)
{
    gsub("\"", "", s);
    gsub("^ +", "", s);
    gsub(" +$", "", s);
    return s;
}

function setupToLower()
{
    upperRE = "[ABCDEFGHIJKLMNOPQRSTUVWXYZ]";
    upper["A"] = "a"; upper["B"] = "b"; upper["C"] = "c";
    upper["D"] = "d"; upper["E"] = "e"; upper["F"] = "f";
    upper["G"] = "g"; upper["H"] = "h"; upper["I"] = "i";
    upper["J"] = "j"; upper["K"] = "k"; upper["L"] = "l";
    upper["M"] = "m"; upper["N"] = "n"; upper["O"] = "o";
    upper["P"] = "p"; upper["Q"] = "q"; upper["R"] = "r";
    upper["S"] = "s"; upper["T"] = "t"; upper["U"] = "u";
    upper["V"] = "v"; upper["W"] = "w"; upper["X"] = "x";
    upper["Y"] = "y"; upper["Z"] = "z";
}

function toLower(s)
{
    if (match(s, upperRE) != 0) {
	do {
	    c = substr(s, RSTART, 1);
	    gsub(c, upper[c], s);
	} while (match(s, upperRE));
    }
    return s;
}

#
# Accumulate a statistics record.
#
function acct(dest, status, datetime, commid)
{
    split(datetime, a, " ");
    split(a[1], b, "/");
    t = b[3] b[1] b[2] a[2];
    if (t < LASTt)
	return;
    status = cleanup(status);
    if (length(status) > 11) {
	msg = toLower(substr(status, 1, 11));
	if (callFailed[msg])
	    return;
    }
    if (status != "") {
	dest = cleanup(dest);
	datetime = cleanup(datetime);
	for (i = 0; i < nerrmsg; i++)
	    if (errmsg[i] == status)
		break;
	if (i == nerrmsg)
	    errmsg[nerrmsg++] = status;
	if (errinfo[dest] == "")
	    errinfo[dest] = datetime "@" i "/" commid;
	else
	    errinfo[dest] = errinfo[dest] "|" datetime "@" i "/" commid;
    }
}

function printOldTranscript(canon, datetime)
{
    gsub("[^0-9]", "", canon);
    split(datetime, parts, " ");
    split(parts[1], p, "/");
    cmd = sprintf(TRANSCRIPT, canon, months[p[1]], p[2], parts[2]);
    system(cmd);
}

function printTranscript(commid)
{
    printf "\n    ---- Transcript of session follows ----\n\n"
    comFile = "log/c" commid;
    if ((getline <comFile) > 0) {
	do {
	    if (index($0, "-- data") == 0)
		print $0
	} while ((getline <comFile) > 0);
	close(comFile);
    } else
	print "No transcript available.";
}

BEGIN		{ FS="\t";
		  callFailed["Busy signal"] = 1;
		  callFailed["Unknown pro"] = 1;
		  callFailed["No carrier "] = 1;
		  callFailed["No local di"] = 1;
		  callFailed["No answer f"] = 1;
		  callFailed["Job aborted"] = 1;
		  callFailed["Invalid dia"] = 1;
		  callFailed["Can not loc"] = 1;
		  months["01"] = "Jan"; months["02"] = "Feb";
		  months["03"] = "Mar"; months["04"] = "Apr";
		  months["05"] = "May"; months["06"] = "Jun";
		  months["07"] = "Jul"; months["08"] = "Aug";
		  months["09"] = "Sep"; months["10"] = "Oct";
		  months["11"] = "Nov"; months["12"] = "Dec";

		  split(LASTRUN, a, " ");
		  split(a[1], b, "/");
		  LASTt = b[3] b[1] b[2] a[2];
		  setupToLower();
		}
$2 == "SEND" && NF == 9  { acct($4,  $9, $1, ""); }
$2 == "SEND" && NF == 11 { acct($5, $11, $1, ""); }
$2 == "SEND" && NF == 12 { acct($6, $12, $1, ""); }
$2 == "SEND" && NF == 13 { acct($7, $13, $1, $3); }
$2 == "SEND" && NF == 14 { acct($7, $14, $1, $3); }
END		{ nsorted = 0;
		  for (key in errinfo)
		      sorted[nsorted++] = key;
		  qsort(sorted, 0, nsorted-1);
		  for (k = 0; k < nsorted; k++) {
		      key = sorted[k];
		      n = split(errinfo[key], a, "|");
		      for (i = 1; i <= n; i++) {
			  if (split(a[i], b, "@") != 2)
			      continue;
			  if (split(b[2], d, "/") != 2)
			      continue;
			  printf "\n"
			  printf "To: %-16.16s  Date: %s\n", key, b[1]
			  printf "Error: %s\n\n", errmsg[d[1]]

			  if (d[2] == "")
			      printOldTranscript(key, b[1]);
			  else
			      printTranscript(d[2]);
		      }
		  }
		}
EOF
$AWK -f $AWKTMP -v LASTRUN="$LASTRUN" TRANSCRIPT="\
    LOGFILE=log/%s;\
    TMP=$TMPDIR/faxlog\$\$;\
    if [ -f \$LOGFILE ]; then\
	$SED -n -e '/%s %s %s.*SESSION BEGIN/,/SESSION END/p' \$LOGFILE |\
	$SED -e '/start.*timer/d'\
	     -e '/stop.*timer/d'\
	     -e '/-- data/d'\
	     -e 's/^/    /' >\$TMP;\
    fi;\
    if [ -s \$TMP ]; then\
	$CAT \$TMP;\
    else\
	echo '    No transcript available.';\
    fi;\
    rm -f \$TMP\
    " $XFERLOG
echo ""

#
# Collect phone numbers that haven't been called
# in the last $AGEINFO days.  We use this to clean
# up the info files.
#
find info -type f -ctime +$AGEINFO -print >$JUNK

if [ -s $JUNK ]; then
echo "Purge remote device capabilities older than $AGEINFO days:"
INFOTMP=info/tmp$$
for i in `$CAT $JUNK`; do
    if $GREP '^&' $i >/dev/null 2>&1; then
	echo "    $i (saving locked down values)"
	$SED '/^[^&]/d' $i > $INFOTMP
	$MV $INFOTMP $i; $CHOWN ${FAXUSER} $i; $CHMOD ${LOGMODE} $i
    elif [ -f $i ]; then
	echo "    $i"
	$RM $i
    fi
done
$RM $INFOTMP			# for -n option
else 
    echo "Nothing to purge in info directory."
fi
echo ""

find log -type f -mtime +$AGELOG ! -name seqf -print >$JUNK
if [ -s $JUNK ]; then
    echo "Purge session logs older than $AGELOG days:"
    for i in `$CAT $JUNK`; do
	echo "    Remove $i"
	$RM $i
    done
    echo ""
fi

echo "Truncate merged session logs older than $AGELOG days:"

$CAT>$AWKTMP<<'EOF'
#
# Setup date conversion data structures.
#
function setupDateTimeStuff()
{
    Months["Jan"] =  0; Months["Feb"] =  1; Months["Mar"] =  2;
    Months["Apr"] =  3; Months["May"] =  4; Months["Jun"] =  5;
    Months["Jul"] =  6; Months["Aug"] =  7; Months["Sep"] =  8;
    Months["Oct"] =  9; Months["Nov"] = 10; Months["Dec"] = 11;

    daysInMonth[ 0] = 31; daysInMonth[ 1] = 28; daysInMonth[ 2] = 31;
    daysInMonth[ 3] = 30; daysInMonth[ 4] = 31; daysInMonth[ 5] = 30;
    daysInMonth[ 6] = 31; daysInMonth[ 7] = 31; daysInMonth[ 8] = 30;
    daysInMonth[ 9] = 31; daysInMonth[10] = 30; daysInMonth[11] = 31;

    FULLDAY = 24 * 60 * 60;
}

#
# Convert MMM DD hh:mm:ss.ms to seconds.
# NB: this does not deal with leap years.
#
function cvtTime(s)
{
    mon = Months[substr(s, 1, 3)];
    yday = substr(s, 5, 2) - 1;
    for (i = 0; i < mon; i++)
	yday += daysInMonth[i];
    s = substr(s, 7);
    t = i = 0;
    for (n = split(s, a, ":"); i++ < n; )
	t = t*60 + a[i];
    return yday*FULLDAY + t;
}

BEGIN			{ setupDateTimeStuff();
			  KEEP = cvtTime(TODAY) - AGE*FULLDAY;
			  lastRecord = "$"
			}
			{ if (cvtTime($1 ":" $2 ":" $3) >= KEEP) {
			      lastRecord = NR; exit
			  }
			}
END			{ print lastRecord }
EOF
TODAY="`date +'%h %d %T'`"

for i in log/[0-9]*; do
    if [ -f $i ]; then
	START=`$AWK -F: -f $AWKTMP -v TODAY="$TODAY" -v AGE=$AGELOG $i` 2>/dev/null
	if [ "$START" != 1 ]; then
	    $SED 1,${START}d $i >$JUNK
	    if [ -s $JUNK ]; then
		$MV $JUNK $i; $CHOWN ${FAXUSER} $i; $CHMOD ${LOGMODE} $i
		ls -ls $i
	    else
		echo "    Remove empty $i"
		$RM $i
	    fi
	fi
    fi
done
echo ""

#
# Purge old stuff from the receive queue.
#
find recvq -type f -mtime +$AGERCV ! -name seqf -print >$JUNK
if [ -s $JUNK ]; then
    echo "Purge received facsimile older than $AGERCV days:"
    (for i in `$CAT $JUNK`; do
	$SBIN/faxinfo $i
	$RM $i >/dev/null 2>&1
    done) | $AWK -F: '
/recvq.*/	{ file=$1; }
/Sender/	{ sender = $2; }
/Pages/		{ pages = $2; }
/Quality/	{ quality = $2; }
/Received/	{ date = $2;
		  for (i = 3; i <= NF; i++)
		      date = date ":" $i;
		  printf "    %-18.18s %21.21s %2d %8s%s\n", \
			file, sender, pages, quality, date;
		}
'
else
    echo "Nothing to purge in receive queue."
fi
echo ""

#
# Purge old stuff from the temp directory.
#
find tmp -type f -mtime +$AGETMP -print >$JUNK
if [ -s $JUNK ]; then
    echo "Purge tmp files older than $AGETMP days:"
    for i in `$CAT $JUNK`; do
      if [ -f $i ]; then
	echo "    Remove $i"
	$RM $i
      fi
    done
else
    echo "Nothing to purge in the tmp directory."
fi
echo ""

#
# Note destinations whose jobs are currently being rejected.
#
find info cinfo -type f -newer $LAST -print 2>/dev/null >$JUNK
if [ -s $JUNK ]; then
	echo "Destinations being rejected (added since $LASTRUN):"
	(for i in `$CAT $JUNK`; do $GREP "^rejectNotice:" $i; done) | $AWK -F: '
		{ reason = $3;
		  for (i = 4; i <= NF; i++)
			reason = reason ":" $i;
		  sub("^[ ]*", "", reason);
		  if (reason != "") {
		      sub(".*/", "", $1);
		      printf "Rejecting jobs to +%s because \"%s\".\n", \
			    $1, reason;
		  }
		}
'
fi

$RM $LAST; eval $UPDATE

# cleanup
hfExit 0