examples/scripts/mount/mount.smbfs

   1 #!/bin/bash
   2 # Debian mount.smbfs compatibility wrapper
   3 # Copyright 2007, Steve Langasek <vorlon at debian.org>
   4 # Licensed under the GNU General Public License, version 2.  See the
   5 # file /usr/share/common-licenses/GPL or <http://www.gnu.org/copyleft/gpl.txt>.
   6
   7 # This script accepts all documented mount options for mount.smbfs,
   8 # passing through those that are also recognized by mount.cifs,
   9 # converting those that are not recognized but map to available cifs
  10 # options, and warning about the use of options for which no equivalent
  11 # exists.
  12
  13 # known bugs: quoted spaces in arguments are not passed intact
  14
  15 set -e
  16
  17 # reverse the order of username and password in a "username" parameter,
  18 # taking care to leave any "%password" bit intact
  19
  20 reverse_username_workgroup() {
  21         local workgroup password username
  22
  23         username="$1"
  24         case "$username" in
  25         *%*)    password="${username#*%}"
  26                 username="${username%%%*}"
  27                 ;;
  28         *) ;;
  29         esac
  30         case "$username" in
  31         */*)    workgroup="${username#*/}"
  32                 username="${username%%/*}"
  33                 ;;
  34         *) ;;
  35         esac
  36         if [ -n "$workgroup" ]; then
  37                 username="$workgroup\\$username"
  38         fi
  39         if [ -n "$password" ]; then
  40                 username="$username%$password"
  41         fi
  42         echo "$username"
  43 }
  44
  45
  46 # parse out the mount options that have been specified using -o, and if
  47 # necessary, convert them for use by mount.cifs
  48
  49 parse_mount_options () {
  50         local OLD_IFS IFS options option username
  51         OLD_IFS="$IFS"
  52         IFS=","
  53         options=""
  54         workgroup=""
  55         password=""
  56
  57         for option in $@; do
  58                 case "$option" in
  59                 sockopt=* | scope=* | codepage=* | ttl=* | debug=*)
  60                         echo "Warning: ignoring deprecated smbfs option '$option'" >&2
  61                         ;;
  62
  63                 krb)
  64                         options="$options${options:+,}sec=krb5"
  65                         ;;
  66
  67                 guest)
  68                         echo "Warning: mapping 'guest' to 'guest,sec=none'" >&2
  69                         options="$options${options:+,}guest,sec=none"
  70                         ;;
  71
  72                 # username and workgroup are reversed in username= arguments,
  73                 # so need to be parsed out
  74                 username=*/*)
  75                         IFS="$OLD_IFS"
  76                         username="${option#username=}"
  77                         username="$(reverse_username_workgroup "$username")"
  78                         IFS=","
  79                         options="$options${options:+,}username=$username"
  80                         ;;
  81
  82                 *)
  83                         options="$options${options:+,}$option"
  84                         ;;
  85                 esac
  86         done
  87         IFS="$OLD_IFS"
  88         echo $options
  89 }
  90
  91 args=()
  92 while [ "$#" -gt 0 ]; do
  93         case "$1" in
  94         -o*)
  95                 arg=${1#-o}
  96                 shift
  97                 if [ -z "$arg" ]; then
  98                         arg=$1
  99                         shift
 100                 fi
 101                 arg="$(parse_mount_options "$arg")"
 102                 if [ -n "$arg" ]; then
 103                         args=("${args[@]}" "-o" "$arg")
 104                 fi
 105                 ;;
 106         *)
 107                 args=("${args[@]}" "$1")
 108                 shift
 109                 ;;
 110         esac
 111 done
 112
 113 USER="$(reverse_username_workgroup "$USER")"
 114
 115 exec /sbin/mount.cifs "${args[@]}"