# Copyright (c) 2010 - OpenSLX GmbH
#
# This program/file is free software distributed under the GPL version 2.
# See http://openslx.org/COPYING
#
# If you have any feedback please consult http://openslx.org/feedback and
# send your feedback to feedback@openslx.org
#
# General information about OpenSLX can be found at http://openslx.org
#
# script is included from init via the "." load function - thus it has all
# variables and functions available

# check if the configuration file is available
if [ -e /initramfs/plugin-conf/auth.conf ]; then

  . /etc/openslx.conf
  ETCDIR=/mnt/${OPENSLX_DEFAULT_CONFDIR}
  PLUGINCONFDIR=${ETCDIR}/plugins/auth
  BINDIR=/mnt/${OPENSLX_DEFAULT_BINDIR}
  PLUGINDIR=/mnt/${OPENSLX_DEFAULT_DIR}/plugin-repo/auth
  VIRTDIR=/mnt/${OPENSLX_DEFAULT_VIRTDIR}

  # load needed variables
  . /initramfs/plugin-conf/auth.conf

  # get distribution info; has also version if needed...
  . /etc/slxsystem.conf
  distro=$slxconf_distro_name
  distro_version=$slxconf_distro_ver

  # Test if this plugin is activated... more or less useless with the
  # new plugin system
  if [ $auth_active -ne 0 ]; then
    [ $DEBUGLEVEL -gt 0 ] && echo "executing the 'auth' os-plugin ...";
    # load general configuration
    . /initramfs/machine-setup

    # Passwd: todo: move somewhere else
    chown root:shadow /mnt/etc/shadow
    chmod 0640 /mnt/etc/shadow
    chown root:root /mnt/etc/paswd
    chmod 0644 /mnt/etc/passwd
    #sed -i 's/auth_rootpwd.*/auth_rootpwd=*********/' $PLUGINCONFDIR/auth.conf

    # set authentication to passwd and group which is default
    sed -i  's/^passwd:.*/passwd: files/' /mnt/etc/nsswitch.conf
    sed -i  's/^group:.*/group: files/' /mnt/etc/nsswitch.conf

    if [ $auth_ldap -eq 1 ]; then
      cp ${PLUGINDIR}/ldap.conf.slx /mnt/etc/ldap/ldap.conf
      cp ${PLUGINDIR}/ldap.conf.slx /mnt/etc/openldap/ldap.conf # required for openSUSE 11.4
      # even if their syntax can differ, we copy them (and hope no nss_* attributes where used)
      cp ${PLUGINDIR}/ldap.conf.slx /mnt/etc/nslcd.conf # required for openSUSE 11.4
      cp ${PLUGINDIR}/ldap.conf.slx /mnt/etc/ldap.conf

      # PAM: add ldap conf before pam_unix(2).so; SuSE: ...-pc
      sed -i \
        '/^account.*req.*pam_unix/ s/^/account sufficient pam_ldap.so\n/' \
        /mnt/etc/pam.d/common-account /mnt/etc/pam.d/common-account-pc
      sed -i \
        '/^auth.*req.*pam_unix/ s/^/auth sufficient pam_ldap.so\n/' \
        /mnt/etc/pam.d/common-auth /mnt/etc/pam.d/common-auth-pc

      sed -i  's/^\(passwd:.*\)/\1 ldap/' /mnt/etc/nsswitch.conf
      sed -i  's/^\(group:.*\)/\1 ldap/' /mnt/etc/nsswitch.conf

      case "$distro" in
        suse)
          rllinker "nslcd" 20 8  # req. with OpenSuSE 11.4
          ;;
      esac

      # just to be on the save side... usually nslcd isn't used.
      sed -i "s/^\(nss_.*\)/#XX_auth.sh#\1/" /mnt/etc/nslcd.conf
        
  
      # hack. if we want to have totally custom ldap.conf files...
      if [ -f ${PLUGINDIR}/ldap.conf ]; then
        cp ${PLUGINDIR}/ldap.conf /mnt/etc/ldap.conf
        cp ${PLUGINDIR}/ldap.conf /mnt/etc/ldap/ldap.conf
        cp ${PLUGINDIR}/ldap.conf /mnt/etc/openldap/ldap.conf # required for openSUSE 11.4
        chmod 644 /mnt/etc/ldap.conf /mnt/etc/ldap/ldap.conf
      fi
      # similiar to ldap.conf, but just similiar
      if [ -f ${PLUGINDIR}/nslcd.conf ]; then
        cp ${PLUGINDIR}/nslcd.conf /mnt/etc/nslcd.conf # openSUSE 11.4
      fi

    fi

    # configure automount
    if [ $auth_automount -eq 1 ]; then
      cp ${PLUGINDIR}/auto.master /mnt/etc
      cp ${PLUGINDIR}/auto.slx /mnt/etc
      if [! -d /mnt/$auth_automnt_dir ]; then
        mkdir -p /mnt/$auth_automnt_dir
      fi

      config_portmap # distro specific configuration :(
      config_automount # distro specific configuration :(
      config_nfs # distro specific config... activates gssd and idmapd

      #maybe we need the following, same at auth_nfs4. also OS depending
      #rllinker "autofs" 15 7
  
      # hack for ubuntu
      if [ $distro = "ubuntu" ]; then
        sed -e 's,start on ,start on filesystem #,' \
          -i /mnt/etc/init/statd.conf
        echo -e "alias autofs autofs4" >>/mnt/etc/modprobe.d/aliases.conf
      fi
    fi

    # configure nfs4
    if [ $auth_nfs4 -eq 1 ]; then
      testmkd /mnt/var/lib/nfs/rpc_pipefs
      echo -e "rpc_pipefs\t/var/lib/nfs/rpc_pipefs rpc_pipefs defaults\t 0 0 nfsd\t\t/proc/fs/nfsd\tnfsd\t\tdefaults\t 0 0" >>/etc/fstab
      echo -e "rpc_pipefs\t/var/lib/nfs/rpc_pipefs rpc_pipefs defaults\t 0 0 nfsd\t\t/proc/fs/nfsd\tnfsd\t\tdefaults\t 0 0" >>/mnt/etc/fstab
      mount -t rpc_pipefs rpc_pipefs /var/lib/nfs/rpc_pipefs
      mount -t nfsd nfsd /proc/fs/nfsd
      touch /mnt/var/lib/nfs/state
      config_portmap # distro specific config. maybe double usage with automount
      #rllinker "portmap" 2 20
      
      # starts rpc.idmapd, maybe portmap... nfs-init.d-hell...
      case "$distro" in
        suse)
          rllinker "nfs" 14 8
          ;;
        ubuntu)
          rllinker "nfs-common" 14 8
          sed -i 's/^NEED_IDMAPD=.*/NEED_IDMAPD=yes/' /mnt/etc/default/nfs-common
          ;;
        *)
          # we don't know it, so lets use all... hopefully one will work ;-)
          rllinker "nfs" 14 8
          rllinker "nfs-common" 14 8
          ;;
      esac

      sed -i \
        "s/^Domain.*/Domain = ${auth_idmap_domain}/" \
        /mnt/etc/idmapd.conf


      #maybe we need the following, same at auth_nfs4. also OS depending
      #rllinker "autofs" 15 7
    fi

    # configure automnt_script
    if [ $auth_automnt_script ]; then
      chmod 755 /mnt/${OPENSLX_DEFAULT_DIR}/plugin-repo/auth/$auth_automnt_script
    fi
   

    
    # configure KerberOS
    if [ $auth_krb -eq 1 ]; then
      cp ${PLUGINDIR}/krb5.conf /mnt/etc
      chmod 644 /mnt/etc/krb5.conf
      
      # PAM: add krb conf after pam_unix(2).so; SuSE: ...-pc
      sed -i \
        '/^account.*req.*pam_unix/ s/^/account [success=ok new_authtok_reqd=ok ignore=ignore default=bad user_unknown=ignore]  pam_krb5.so     use_first_pass\n/' \
        /mnt/etc/pam.d/common-account /mnt/etc/pam.d/common-account-pc
      sed -i \
        '/^account.*req.*pam_unix/ s/^/auth    sufficient      pam_krb5.so     use_first_pass\n/' \
        /mnt/etc/pam.d/common-account /mnt/etc/pam.d/common-auth-pc
      echo "session optional        pam_krb5.so" >>  /mnt/etc/pam.d/common-session
      echo "session optional        pam_krb5.so" >>  /mnt/etc/pam.d/common-session-pc

      # script to get keytab or do other magic things
      if [ -n $auth_krbscript ]; then
        echo "# auth-plugin: start custom kerberOS script
          /${OPENSLX_DEFAULT_DIR}/plugin-repo/auth/$auth_krbscript
          chmod 600 /etc/krb5.keytab # if a user forget to change it the $auth_krbscript" \
          >>  /mnt/etc/init.d/boot.slx
        chmod 755 /mnt/${OPENSLX_DEFAULT_DIR}/plugin-repo/auth/$auth_krbscript
        # just krb5.conf perm
        rllinker "boot.slx" 2 20
      fi

      # maybe not needed in every case. depends how $HOME gets mounted... but required for nfs & automount at least with nfsv4
      if [ $distro = "ubuntu" ]; then
        sed -i 's/^NEED_GSSD.*/NEED_GSSD=yes/' /mnt/etc/default/nfs-common
      fi
      if [ $distro = "suse" ]; then
        sed -i 's/^NFS_START_SERVICES.*/NFS_START_SERVICES="yes"/' /mnt/etc/sysconfig/nfs
        sed -i 's/^NFS_SECURITY_GSS.*/NFS_SECURITY_GSS="yes"/' /mnt/etc/sysconfig/nfs
      fi

    fi

  fi
  
  # hack. if we want to have totally custom pam-files...
  if [ -d ${PLUGINDIR}/pam.d/ ]; then
    cp ${PLUGINDIR}/pam.d/* /mnt/etc/pam.d/
  fi
  
  # hack. if we want to have totally custom nsswitch.conf file...
  if [ -f ${PLUGINDIR}/nsswitch.conf ]; then
    cp ${PLUGINDIR}/nsswitch.conf /mnt/etc/nsswitch.conf
    chmod 644 /mnt/etc/nsswitch.conf
  fi


  # just for development purpose, can be deleted later
  rllinker "syslog" 2 20

else
  [ $DEBUGLEVEL -gt 0 ] && echo "  * Configuration of auth plugin failed"
fi