#!/bin/bash

# Config file name
rfa_conf=/etc/repoforge/rfa.conf

# Defaults for rfa.conf
group_gid_min=3000
group_w_prefix=svn_w-
group_r_prefix=svn_r-
repository_root=
repository_link=

# Options
opts_force=0

todo=""

# Echo help information
usage()
{
	echo "Usage: "`basename $0`" [options] <command> <parameters>"
	echo "Tool for VCS repository administration. Now supports" \
	"Subversion only."
	printf "Options:\n"
	printf "\t-h, --help\n"
	printf "\t\tPrint help message.\n"
	printf "Commands:\n"
	printf "\tadd <repository1> [repository2] ...\n"
	printf "\t\tCreate new repository.\n"
	printf "\tdel <repository1> [repository2] ...\n"
	printf "\t\tDelete existing repository.\n"
	printf "\tfixmod <repository1> [repository2] ...\n"
	printf "\t\tFix access rights for repository.\n"
	printf "\tuseradd <repository> <r/w/rw> <user1> [user2] ...\n"
	printf "\t\tSet access rights for user(s) to repository.\n"
	printf "\tuserdel <repository> <r/w/rw> <user1> [user2] ...\n"
	printf "\t\tRemove access rights for user(s) to repository.\n"
}

group_add()
{
	groupadd -K GID_MIN=${group_gid_min} ${group_r_prefix}$1
	groupadd -K GID_MIN=${group_gid_min} ${group_w_prefix}$1
}

group_del()
{
	groupdel ${group_r_prefix}$1
	groupdel ${group_w_prefix}$1
}

svn_add()
{
	repository_name=$1
	repo_r=${repository_root}/${repository_name}
	repo_w=${repository_root}/${repository_name}/${repository_name}

	mkdir ${repo_r}
	saved_umask=`umask`
	umask 002
	svnadmin --fs-type=fsfs create ${repo_w}
	umask ${saved_umask}
}

svn_fixmod()
{
	repository_name=$1
	repo_r=${repository_root}/${repository_name}
	repo_w=${repository_root}/${repository_name}/${repository_name}

	chmod 750 ${repo_r}
	chgrp ${group_r_prefix}${repository_name} ${repo_r}
	chgrp -R ${group_w_prefix}${repository_name} ${repo_w}
	dirs=`find ${repo_w} -type d`
	for dir in $dirs; do
		chmod g+s $dir
	done
	chmod -R g+w ${repo_w}
}

svn_del()
{
	rm -Rf ${repository_root}/$1
}

link_add()
{
	ln -s ${repository_root}/$1/$1 ${repository_link}/$1
}

link_del()
{
	rm -f ${repository_link}/$1
}

repository_add()
{
	for rep_name in "$@"; do
		group_add $rep_name
		svn_add $rep_name
		svn_fixmod $rep_name
		link_add $rep_name
	done
}

repository_fixmod()
{
	for rep_name in "$@"; do
		svn_fixmod $rep_name
	done
}

repository_del()
{
	for rep_name in "$@"; do
		link_del $rep_name
		svn_del $rep_name
		group_del $rep_name
	done
}

user_add()
{
	w=0
	r=0
	
	repository_name=$1
	shift
	case "$1" in
	r)
		r=1
		;;
	w)
		w=1
		;;
	rw|wr)
		r=1
		w=1
		;;
	*)
		echo "Illegal parameter $1"
		exit -1
		;;
	esac
	shift
	for user_name in "$@"; do
		if [ $r -ne 0 ]; then
			adduser ${user_name} ${group_r_prefix}${repository_name}
		fi
		if [ $w -ne 0 ]; then
			adduser ${user_name} ${group_w_prefix}${repository_name}
		fi
	done
}

user_del()
{
	w=0
	r=0

	repository_name=$1
	shift
	case "$1" in
	r)
		r=1
		;;
	w)
		w=1
		;;
	rw|wr)
		r=1
		w=1
		;;
	*)
		echo "Illegal parameter $1"
		exit -1
		;;
	esac
	shift
	for user_name in "$@"; do
		if [ $r -ne 0 ]; then
			deluser ${user_name} ${group_r_prefix}${repository_name}
		fi
		if [ $w -ne 0 ]; then
			deluser ${user_name} ${group_w_prefix}${repository_name}
		fi
	done
}

# Parse command line options
cmd_options=$(getopt -o "+hfl:" -l help,force,level -- "$@")
if test "$?" != 0; then
	usage
	exit 1
fi

eval set -- ${cmd_options}
while  test "$1" != "--"; do
	case "$1" in
	-h|--help) 
		usage
		exit 0 
		;;
	-f|--force)
		opts_force=1
		;;
	-l|--level)
		shift
		level=$1 
		;;
	*)
		;;
	esac
	shift
done
shift

. $rfa_conf

if [ $# -lt 1 ]; then
	echo "Command is expected"
	exit -1
fi

case "$1" in
"help") 
	usage
	exit 0 
	;;
"add")
	if [ $# -lt 2 ]; then
		echo "Repository name is expected"
		exit -1
	fi
	shift
	repository_add "$@"
	;;
"fixmod")
	if [ $# -lt 2 ]; then
		echo "Repository name is expected"
		exit -1
	fi
	shift
	repository_fixmod "$@"
	;;
"del")
	if [ $# -lt 2 ]; then
		echo "Repository name is expected"
		exit -1
	fi
	shift
	repository_del "$@"
	;;
"adduser"|"useradd")
	if [ $# -lt 4 ]; then
		echo "Not enought parameters"
		exit -1
	fi
	shift
	user_add "$@"
	;;
"deluser"|"userdel")
	if [ $# -lt 4 ]; then
		echo "Not enought parameters"
		exit -1
	fi
	shift
	user_del "$@"
	;;
*)
	echo "Unknown command"
	exit -1
	;;
esac

exit 0