#!/bin/sh
# Check if the user and group given in arguments
#  exit in /etc/passwd and /etc/group, and create
#  them if necessary.
#


# take 4 arguments : 	username
# 			groupname
#                       automatic answer
#                       the src dir

PATH="/sbin:/usr/sbin:/bin:/usr/bin:/usr/X11R6/bin"
if test -d /usr/ucb; then
    PATH=/usr/ucb:$PATH
fi

if test $# -ne 4; then
    echo "Too few/many arguments"
    exit 1
fi

USERNAME=$1
GROUPNAME=$2
ANSWER=$3
SRCDIR=$4

INSTALL="nothing"
INSTALLED=0

if test `uname -s` = "FreeBSD"; then
  IS_FREEBSD=1
else
  IS_FREEBSD=0
fi

if test $IS_FREEBSD -eq 1; then
  CMD="pw groupadd $GROUPNAME"
else
  CMD="groupadd $GROUPNAME"
fi

echo -n "Checking if group $GROUPNAME exists ... "
if $SRCDIR/script/has_usrgrp.pl -group "$GROUPNAME"; then
  echo "yes."
  INSTALLED=1
else
  echo "no."
  if test -z "$CMD"; then
    echo "Could not determine the command to use to add a group."
    echo "Please add group \"GROUPNAME\" manually"
    echo "(or choose another groupname with configure script)."
    exit 1
  fi
  if test "$ANSWER" -eq 2; then
    while test \( ! -z "$INSTALL" \) -a \( "$INSTALL" != "y" \) -a \( "$INSTALL" != "n" \);
    do
      echo "Would you like to add $GROUPNAME in /etc/passwd with the following command ?"
      echo "    $CMD"
      echo "If you use NYS, ldap, etc, you should add the group manually (say no here)"
      echo -n "Please answer with 'y' or 'n' (default: 'y'): "
      read INSTALL NOTHING
    done
    if test \( -z "$INSTALL" \) -o \( "$INSTALL" = "y" \); then
      if $CMD; then
        INSTALLED=1
      fi
    fi
  elif test "$ANSWER" -eq 1; then
    # automatic answer given by configure script (option --with-answer-all)
    if $CMD; then
      INSTALLED=1
    fi
  fi    
fi


if test "$INSTALLED" -eq 0; then
  echo
  echo "Group \"$GROUPNAME\" does not exist : please create it or choose"
  echo "another groupname with configure script."
  exit 1
fi

INSTALL="nothing"
INSTALLED=0

echo -n "Checking if user $USERNAME exists ... "
if $SRCDIR/script/has_usrgrp.pl -user "$USERNAME"; then
  echo "yes."
  INSTALLED=1
else
  echo "no."
  CMD=""
  if test "$IS_FREEBSD" -eq 1; then
    CMD="pw useradd $USERNAME -c $USERNAME"
  elif useradd -D 2> /dev/null; then
    CMD="useradd -c '$USERNAME' -g $GROUPNAME $USERNAME"
  elif adduser -D 2> /dev/null; then
    CMD="adduser -c '$USERNAME' -g $GROUPNAME $USERNAME"
  fi
  if test -z "$CMD"; then
    echo "Could not determine the command to use to add a user."
    echo "Please add user \"$USERNAME\" (group \"GROUPNAME\") manually"
    echo "(or choose another username with configure script)."
    exit 1
  fi
  if test "$ANSWER" -eq 2; then
    while test \( ! -z "$INSTALL" \) -a \( "$INSTALL" != "y" \) -a \( "$INSTALL" != "n" \);
    do
      echo "Would you like to add $USERNAME in /etc/passwd with the following command ?"
      echo "    $CMD"
      echo "If you use NYS, ldap, or similar, you should add the user manually (say no here)"
      echo -n "Please answer with 'y' or 'n' (default: 'y'): "
      read INSTALL NOTHING
    done
    if test \( -z "$INSTALL" \) -o \( "$INSTALL" = "y" \); then
      if $CMD; then
        INSTALLED=1
      fi
    fi
  elif test "$ANSWER" -eq 1; then
    # automatic answer given by configure script (option --with-answer-all)
    if $CMD; then
      INSTALLED=1
    fi
  fi    
fi


if test "$INSTALLED" -eq 0; then
  echo
  echo "User \"$USERNAME\" does not exist : please create it or choose another"
  echo "username with configure script."
  exit 1
else
  USERGID="`$SRCDIR/script/has_usrgrp.pl -user "$USERNAME" -printgid`"
  GID="`$SRCDIR/script/has_usrgrp.pl -group "$GROUPNAME" -printgid`"
  if test \( "$USERGID" = "" \) -o \( "$GID" = "" \); then
    echo "Could not check if \"$USERNAME\" is in the group \"$GROUPNAME\" :"
    echo "please do it manually."
  fi

  if test "$GID" -ne "$USERGID"; then
    echo
    echo "User $USERNAME exists, but is not in the group $GROUPNAME."
    echo "Please set its group to \"$GROUPNAME\" (id $GID) manually"
    echo "(or choose another user and/or group)."
    exit 1
  fi
fi