release/src/router/bpalogin/bpalogin.conf.sh

   1 #!/bin/sh
   2 #
   3 # Configuration script for BPALogin
   4 #
   5 # Creates a new bpalogin.conf file based on the installed template, prompting
   6 # for overrides.
   7 #
   8 # Relies heavily on the formatting of the bpalogin.conf file and is sensitive
   9 # to whitespace!  Be careful when changing bpalogin.conf.
  10 #
  11 # Copyright 2003 William Rose <wdrose@sourceforge.net> and licensed under the
  12 # GNU GPL, as per the rest of BPALogin.
  13 ###
  14
  15 CONFIG_FILE="${1:-/etc/bpalogin.conf}"
  16 TMP_DIR="${TMPDIR:-/tmp}"
  17 NEW_CONFIG="`mktemp $TMP_DIR/bpalogin.conf-XXXXXX`"
  18
  19 if ! [ -r "$CONFIG_FILE" ]
  20 then
  21   echo "Usage: bpalogin.conf.sh config-file-name"
  22   exit 1
  23 fi
  24
  25 eval `cat "$CONFIG_FILE" | \
  26 (while read
  27   do
  28     case "$REPLY" in
  29       '# '*)
  30         # Comment line
  31       ;;
  32
  33       '#'*)
  34         # Unspecified option
  35         REPLY="${REPLY#\#}"
  36         if [ -n "$REPLY" ]
  37         then
  38           name="${REPLY%% *}"
  39           value="${REPLY#* }"
  40
  41           echo "$name=\"$value\""
  42           echo "${name}_disabled=\"yes\""
  43           disabled="$disabled $name"
  44         fi
  45       ;;
  46
  47       *)
  48         # Empty line or specified option
  49         if [ -n "$REPLY" ]
  50         then
  51           name="${REPLY%% *}"
  52           value="${REPLY#* }"
  53
  54           echo "$name=\"$value\""
  55           echo "${name}_disabled=\"no\""
  56           variables="$variables $name"
  57         fi
  58       ;;
  59     esac
  60   done
  61   echo "variables=\"${variables# }\""
  62   echo "disabled=\"${disabled# }\""
  63 )`
  64
  65 ##
  66 # Prompt for new values for already configured variables.
  67 #
  68 if [ -n "$variables" ]
  69 then
  70   cat <<EOF
  71
  72
  73 BPALogin Configuration
  74 ----------------------
  75
  76 You will now be prompted for some basic details about your connection.
  77
  78 When prompted, the current information is displayed in square brackets.
  79 Press Enter to accept the current information, or else type the new details
  80 and press Enter.
  81
  82
  83 EOF
  84
  85   for var in $variables
  86   do
  87     echo -n "Enter $var [`eval 'echo $'$var`]: "
  88     if read && [ -n "$REPLY" ]
  89     then
  90       eval "$var=\"$REPLY\""
  91     fi
  92   done
  93 fi
  94
  95 ##
  96 # Prompt for additional configuration details if disabled configuration
  97 # options were detected.
  98 if [ -n "$disabled" ]
  99 then
 100   echo
 101   echo -n "Would you like to configure additional options? (y/n): "
 102   read
 103   case "$REPLY" in
 104     [Yy]*)
 105       cat <<EOF
 106
 107
 108 Additional Configuration
 109 ------------------------
 110
 111 You will now be prompted for some additional details about your connection.
 112
 113 When prompted, the default information is displayed in square brackets.
 114 Press Enter to use the default information in your configuration file, or
 115 else type the new details.  If you do not wish to have any value recorded
 116 in your configuration file, type # and press Enter.
 117
 118
 119 EOF
 120       for var in $disabled
 121       do
 122         echo -n "Enter $var [`eval 'echo $'$var`]: "
 123         if read
 124         then
 125           if [ -n "$REPLY" ]
 126           then
 127             if [ "$REPLY" = "#" ]
 128             then
 129               eval "${var}_disabled=\"yes\""
 130             else
 131               eval "${var}_disabled=\"no\""
 132               eval "$var=\"$REPLY\""
 133             fi
 134           else
 135             eval "${var}_disabled=\"no\""
 136           fi
 137         fi
 138       done
 139       ;;
 140     *)
 141       ;;
 142   esac
 143 fi
 144
 145
 146 ##
 147 # Create the new bpalogin.conf file
 148 cat "$CONFIG_FILE" | \
 149 (while read;
 150   do
 151     case "$REPLY" in
 152       '# '*)
 153         # Comment line
 154         echo $REPLY >> "$NEW_CONFIG"
 155       ;;
 156
 157       '#'*)
 158         # Unspecified option
 159         REPLY="${REPLY#\#}"
 160         if [ -n "$REPLY" ]
 161         then
 162           name="${REPLY%% *}"
 163
 164           if eval "[ \"\$${name}_disabled\" = \"yes\" ]"
 165           then
 166             echo "#$name `eval 'echo $'$name`" >> "$NEW_CONFIG"
 167           else
 168             echo "$name `eval 'echo $'$name`" >> "$NEW_CONFIG"
 169           fi
 170         else
 171           echo $REPLY >> "$NEW_CONFIG"
 172         fi
 173       ;;
 174
 175       *)
 176         if [ -n "$REPLY" ]
 177         then
 178           name="${REPLY%% *}"
 179
 180           if eval "[ \"\$${name}_disabled\" = \"yes\" ]"
 181           then
 182             echo "#$name `eval 'echo $'$name`" >> "$NEW_CONFIG"
 183           else
 184             echo "$name `eval 'echo $'$name`" >> "$NEW_CONFIG"
 185           fi
 186         else
 187           echo $REPLY >> "$NEW_CONFIG"
 188         fi
 189       ;;
 190     esac
 191   done)
 192
 193 echo
 194 echo "New configuration successfully saved in $NEW_CONFIG"
 195 echo -n "Overwrite $CONFIG_FILE with this file? (y/n) "
 196 read
 197
 198 case "$REPLY" in
 199   [Yy]*)
 200     if mv "$NEW_CONFIG" "$CONFIG_FILE"
 201     then
 202       echo "Your BPALogin configuration file has been updated."
 203     else
 204       echo "Action failed.  Please copy $NEW_CONFIG to $CONFIG_FILE manually."
 205     fi
 206
 207     if ! chmod 600 "$CONFIG_FILE"
 208     then
 209       echo "Unable to change permissions for your configuration file."
 210       echo "Please check your configuration file is not readable by others."
 211     fi
 212     ;;
 213   *)
 214     echo "Your original BPALogin configuration file was not changed."
 215     ;;
 216 esac
 217
 218 echo
 219