mailqgrep

#!/usr/bin/env bash

usage() {
	cat <<EOT

Usage: ${0##*/} [options] [daterange] searchstring

where options are any of:
	-h	this help
	-d	include debug output (there isn't much of it)
	-p	pretty-print (indents et al)
	-q	quiet (not implemented)
	-v	verbose (show search string, default if on tty)

and where daterange is blank for the current day, 0 for yesterday,
1 for the day before, etc.

EOT
}

# Defaults
Debug=false
Pretty=false
Quiet=false
Verbose=false
if [[ "$MAILQGREP" =~ p ]]; then
	Pretty=true
fi
if [[ "$MAILQGREP" =~ q ]]; then
	Quiet=true
fi
if [ -t 0 ] || [[ "$MAILQGREP" =~ v ]]; then
	Verbose=true
fi

# Options
while getopts hpqv opt; do
  case "$opt" in
    h)	usage; exit ;;
    d)	Debug=true ;;
    p)	Pretty=true ;;
    q)	Quiet=true; Verbose=false ;;
    v)	Verbose=true; vflag="-v" ;;
    *)	usage; exit 1 ;;
  esac
done
shift $((OPTIND - 1))

if egrep -q '^[0-9]-[0-9]+$' <<<"$1"; then
	lhs="${1%%-*}"
	rhs="${1##*-}"
	range="$[ $rhs - $lhs + 1 ]"
	if [ -f /var/log/maillog.$1.bz2 ]; then
		ext=".bz2"
		cmd="bzgrep"
	elif [ -f /var/log/maillog.$1.gz ]; then
		ext=".gz"
		cmd="zgrep"
	elif [ -f /var/log/maillog.$1 ]; then
		ext=""
		cmd="grep"
	else
		echo "ERROR: no maillog!" >&2
		ls -l /var/log/maillog.${1}* | sed 's/^/	/' >&2
		exit 1
	fi
	cmd="$cmd -hv spamd"
	for i in `jot $range $lhs` ; do
		cmd="$cmd /var/log/maillog.${i}${ext}"
	done
	search="$2"
	shift
elif egrep -q '^[0-9]+$' <<<"$1"; then
	if [ -f /var/log/maillog.$1.bz2 ]; then
		ext=".bz2"
		cmd="bzgrep"
	elif [ -f /var/log/maillog.$1.gz ]; then
		ext=".gz"
		cmd="zgrep"
	elif [-f /var/log/maillog.$1 ]; then
		ext=""
		cmd="grep"
	else
		echo "ERROR: no file found" >&2
		exit 1
	fi
	cmd="$cmd -v spamd /var/log/maillog.${1}${ext}"
	search="$2"
	shift
else
	cmd="grep -v spamd /var/log/maillog"
	search="$1"
fi

if [ -z "$search" ]; then
	printf 'NO SEARCH STRING\n'
	usage
	exit 1
fi

$Debug && echo ">> cmd = $cmd" >&2
string="`$cmd | egrep \"$search\" | awk '{print $6}' | sort -u | awk '{a = a \"|\" $1} END {print substr(a,2);}'`"

if [ -z "$string" ]; then
	printf 'NO RECORDS FOUND\n' >&2
	exit 1
fi

if $Pretty; then
	pfilter='s/: (from|to)/\
	\1/;s/, (msgid|relay|mailer|stat)=/,\
	\1=/g;p'
else
	pfilter='p'
fi

$Verbose && printf '\nSEARCH = "%s"' "$search"
$Verbose && printf '\nSTRING = "%s"\n' "$string"
$Verbose && printf '\n'
$cmd | egrep "$string" | uniq | sed -nE "$pfilter"
$Verbose && printf '\n'