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#! /bin/bash -
# FILENAME: sendhtpwd
# DESCRIPTION: Sends an httpd password to relevant usernames. Data are
# stored in a file with the following format:
#
#	username:clear_password:crypted_password:mailaddr
#
# USAGE: sendhtpwd [-H] [-f file] [-h file] [-n name ] [-u url ]
#	[-s sender] [-v]
# OPTIONS:
#       -H - Prints help message
#       -f file - File usernames are stored in
#       -n name - Name of restricted area of httpd server
#	  -s addr - Mailaddr messages appear to be sent
#       -u url - URL of restricted area of httpd server
#       -v - Produces verbose output
#
# LABEN S.p.A. - 09-jan-1998
#
# HISTORY:
# 0.0 Luca Salvadori <salvadori.l@laben.it> 09-jan-1998
# 	- Functions and behaviour
#
#
########################## S U B R O U T I N E S ###########################

# Initialization of global variables
# Program Information
AUTHOR="Luca Salvadori <salvadori.l@laben.it>"
VERSION="0.0"
DATE="09-jan-1998"
# End of program information
DEF_NAME="Reports Gestionali"        # Default name of restricted httpd area
DEF_URL="http://www.laben.it/p_c"    # URL of the above
DEF_SENDER=webmaster@www.laben.it    # Address messages appear coming from
DEF_FILE=~/work/utils/htpasswd       # Default data file
MASK="600"                           # Default protection mask for data file
                                     # WARNING! It contains clear passwords!
VERBOSE=0                            # Brief output is default
# Options string
OPTS=":-H -f: -n: -u: -s: -v"
# Default options
DEFOPT="-f $DEF_FILE -n \"$DEF_NAME\" -u $DEF_URL -s $DEF_SENDER"
# End of global variables initialization


##################### E N D  O F  S U B R O U T I N E S ####################

function helpmsg() {
	echo "" 1>&2
	echo " `basename $0` Version $VERSION - $DATE" 1>&2
	echo " Author: $AUTHOR" 1>&2
	echo "" 1>&2
	echo " USAGE: `basename $0` [-H] [-f file] [-n name ] [-u url ] [-s sender] [-v]" 1>&2
	echo " OPTIONS:" 1>&2
	echo "	-H - Prints help message" 1>&2
	echo "	-f file - File usernames are stored in" 1>&2
	echo "	-n name - Name of restricted area of httpd server" 1>&2
	echo "	-u url - URL of restricted area of httpd server" 1>&2
	echo "	-s addr - Mailaddr messages appear to be sent" 1>&2
	echo "	-v - Produces verbose output" 1>&2
	echo "" 1>&2
}

########### M A I N  P R O G R A M ###########

# Parsing input parameters and assigning default if needed
options=`echo $*`
[ "$options" = "" ] && { $0 $DEFOPT ; exit }

# Parsing options and setting defaults if needed
while [ $OPTIND -le $# ]
do
	getopts "$OPTS" option
	case $option in
		H)
			helpmsg
			exit 0
			;;
		f)
			FILE=$OPTARG
			;;
		n)
			NAME=$OPTARG
			;;
		u)
			URL=$OPTARG
			;;
		s)
			SENDER=$OPTARG
			;;
		v)
			VERBOSE=1
			;;
		"?")
			echo "`basename $0` - ERROR: Option -$OPTARG requires an argument or is unknown." 1>&2
			echo "Run `basename $0` -H for help." 1>&2
			exit 3
			;;
		*)
			echo "`basename $0` - ERROR: Unknown option -$OPTARG." 1>&2
			echo "Run `basename $0` -H for help." 1>&2
			exit 2
			;;
	esac
	case $OPTARG in
		-*)
			echo "`basename $0` - ERROR: Option -$option requires an argument." 1>&2
			echo "Invalid argument $OPTARG." 1>&2
			echo "Run `basename $0` -H for help." 1>&2
			exit 3
			;;
	esac
done
# Setting defaults for unselected options
NAME=${NAME:-$DEF_NAME}
URL=${URL:-$DEF_URL}
SENDER=${SENDER:-$DEF_SENDER}
FILE=${FILE:-$DEF_FILE}
# Perform sanity checks, just in case
[ ! -f $FILE ] && { echo "`basename $0` - ERROR: Data file $FILE does not exist." 1>&2 ; echo "Run `basename $0` -H for help." 1>&2 ; exit 6 }

# Here begins the real stuff
# Setting protection to data file, just in case...
[ -f $FILE ] && chmod $MASK $FILE

# Looping for all usernames
for line in `cat $FILE`
do
	# Getting parameters
	user=`echo $line | cut -d":" -f1`
	pwd=`echo $line | cut -d":" -f2`
	cpwd=`echo $line | cut -d":" -f3`
	mailaddr=`echo $line | cut -d":" -f4`
	# Verbose output
	[ $VERBOSE -eq 1 ] && echo -n "Sending message to $user ($mailaddr)..."
	# Sending message
	echo \
"Subject: Password per $NAME

QUESTO E' UN MESSAGGIO GENERATO AUTOMATICAMENTE DAL SISTEMA.
NON EFFETTUARE REPLY.

Di seguito le informazioni per accedere all'area 
$NAME ($URL)
del Web Aziendale:

USERNAME: $user
PASSWORD: $pwd

Le informazioni di cui sopra sono da considerarsi riservate, 
pertanto si invita a non comunicarle a chicchessia.
Nel caso si ritenesse che la password sia giunta a conoscenza 
di altri, si prega di segnalarlo immediatamente inviando una 
mail a $SENDER.
La password puo' essere modificata mediante l'apposita utility 
disponibile nella pagina delle Intranet Utilities 
(http://www.laben.it/utilities).
Per ulteriori dettagli si prega di consultare le Network News 
(http://www.laben.it/utilities/news.html) nel Newsgroup 
\"LABEN Web\", Articolo n. 12 dal titolo
\"Reporting Direzionale su Intranet\".

	Cordialmente
	$SENDER

" | sendmail -f"$SENDER" $mailaddr
	# Verbose output
	[ $VERBOSE -eq 1 ] && echo "Done."

done

# Happily exit
exit

##################### E N D  O F  M A I N  P R O G R A M ###################