cable-scripts/cable-setup

   1 #!/bin/bash
   2 #Made by Marcelo A.
   3
   4 # Set to "C" locale so we can parse messages from commands
   5 LANG=C
   6 export LANG
   7
   8 CONFIG=/etc/ppp/pptp.conf
   9 USER=""
  10 ETH=""
  11 ME=`basename $0`
  12 # Protect created files
  13 umask 077
  14 copy() {
  15     cp $1 $2
  16     if [ "$?" != 0 ] ; then
  17        echo "*** Error copying $1 to $2"
  18        echo "*** Quitting."
  19        exit 1
  20     fi
  21 }
  22
  23 # Must be root
  24 if [ "`id -u`" != 0 ] ; then
  25     echo "$ME: You must be root to run this script" >& 2
  26     exit 1
  27 fi
  28
  29 # Prototype config file must exist
  30 if [ ! -r "$CONFIG" ] ; then
  31     echo "Oh, dear, I don't see the file '$CONFIG' anywhere.  Please"
  32     echo "re-install the client."
  33     exit 1
  34 fi
  35
  36 . $CONFIG
  37
  38 echo "Welcome to the cable connection setup."
  39 echo "Please enter some information:"
  40
  41 while [ true ] ; do
  42     echo ""
  43     echo "USER NAME"
  44     echo ""
  45     echo -n ">>> Enter your user name (default $USER): "
  46     read U
  47
  48     if [ "$U" = "" ] ; then
  49         U="$USER"
  50     fi
  51
  52     # Under Linux, "fix" the default interface if eth1 is not available
  53     if test `uname -s` = "Linux" ; then
  54         ifconfig $ETH > /dev/null 2>&1 || ETH=eth0
  55     fi
  56     echo ""
  57     echo "INTERFACE"
  58     echo ""
  59     echo ">>> Enter the Ethernet interface connected to the Cable modem"
  60     echo "For Linux, it will be ethn, where 'n' is a number."
  61     echo -n "(default $ETH): "
  62     read E
  63
  64 if [ "$E" = "" ] ; then
  65         E="$ETH"
  66     fi
  67
  68     echo ""
  69     echo "SERVER ADDRESS"
  70     echo ""
  71     echo ">>> Enter the Server address of your ISP."
  72     echo -n "(default $SERVERADDR): "
  73     read S
  74    if [ "$S" = "" ] ; then
  75          S="$SERVERADDR"
  76    fi
  77
  78     echo ""
  79     echo "DNS"
  80     echo ""
  81     echo "Please enter the IP address of the primary DNS server."
  82     echo "If you want the server to automatically provide you the addresses',"
  83     echo "enter 'server' (all lower-case) here."
  84     echo "If you just press enter, I will assume you know what you are"
  85     echo "doing and not modify your DNS setup."
  86     echo -n ">>> Enter the DNS information here: "
  87
  88     read DNS1
  89
  90
  91     if [ "$DNS1" != "" ] ; then
  92         if [ "$DNS1" != "server" ] ; then
  93             echo "Please enter the IP address of your ISP's secondary DNS server."
  94             echo "If you just press enter, I will assume there is only one DNS server."
  95             echo -n ">>> Enter the secondary DNS server address here: "
  96              read DNS2
  97         fi
  98     fi
  99
 100
 101     while [ true ] ; do
 102         echo ""
 103         echo "PASSWORD"
 104         echo ""
 105         stty -echo
 106         echo -n ">>> Please enter your password:    "
 107         read PWD1
 108         echo ""
 109         echo -n ">>> Please re-enter your password: "
 110         read PWD2
 111         echo ""
 112         stty echo
 113         if [ "$PWD1" = "$PWD2" ] ; then
 114             break
 115         fi
 116
 117         echo -n ">>> Sorry, the passwords do not match.  Try again? (y/n)"
 118         read ANS
 119         case "$ANS" in
 120             N|No|NO|Non|n|no|non)
 121                 echo "OK, quitting.  Bye."
 122                 exit 1
 123         esac
 124     done
 125
 126    echo ""
 127    echo "** Summary of what you entered **"
 128    echo ""
 129    echo "Ethernet Interface: $E"
 130    echo "User name:          $U"
 131
 132     if [ "$DNS1" != "" ] ; then
 133         if [ "$DNS1" = "server" ] ; then
 134             echo "DNS addresses:      Supplied by ISP's server"
 135         else
 136             echo "Primary DNS:        $DNS1"
 137             if [ "$DNS2" != "" ] ; then
 138                 echo "Secondary DNS:      $DNS2"
 139             fi
 140          fi
 141      else
 142          echo "DNS:                Do not adjust"
 143      fi
 144          echo ""
 145          while [ true ] ; do
 146          echo -n '>>> Accept these settings and adjust configuration files (y/n)? '
 147          read ANS
 148          case "ANS" in
 149              Y|y|yes|Yes|oui|Oui)
 150                  ANS=y
 151                  ;;
 152              N|n|no|No|non|Non)
 153                  ANS=n
 154                  ;;
 155          esac
 156          if [ "$ANS" = "y" -o "$ANS" = "n" ] ; then
 157              break
 158          fi
 159      done
 160      if [ "$ANS" = "y" ] ; then
 161          break
 162      fi
 163  done
 164
 165 # Adjust configuration files.  First to $CONFIG
 166 copy $CONFIG $CONFIG-bak
 167 if [ "$DNS1" = "server" ] ; then
 168     DNSTYPE=SERVER
 169     DNS1=""
 170     DNS2=""
 171     PEERDNS=yes
 172 else
 173     PEERDNS=no
 174     if [ "$DNS1" = "" ] ; then
 175         DNSTYPE=NOCHANGE
 176     else
 177         DNSTYPE=SPECIFY
 178     fi
 179 fi
 180 # Where is pppd likely to put its pid?
 181 if [ -d /var/run ] ; then
 182     VARRUN=/var/run
 183 else
 184     VARRUN=/etc/ppp
 185 fi
 186
 187
 188 sed -e "s&^USER=.*&USER='$U'&" \
 189     -e "s&^ETH=.*&ETH='$E'&" \
 190     -e "s&^SERVERADDR=.*&SERVERADDR='$S'&" \
 191     -e "s/^DNSTYPE=.*/DNSTYPE=$DNSTYPE/" \
 192     -e "s/^DNS1=.*/DNS1=$DNS1/" \
 193     -e "s/^DNS2=.*/DNS2=$DNS2/" \
 194     -e "s/^PEERDNS=.*/PEERDNS=$PEERDNS/" \
 195     < $CONFIG-bak > $CONFIG
 196
 197 if [ $? != 0 ] ; then
 198     echo "** Error modifying $CONFIG"
 199     echo "** Quitting"
 200     exit 1
 201 fi
 202
 203 echo "Adjusting /etc/ppp/pap-secrets and /etc/ppp/chap-secrets"
 204 if [ -r /etc/ppp/pap-secrets ] ; then
 205     echo "  (But first backing it up to /etc/ppp/pap-secrets-bak)"
 206     copy /etc/ppp/pap-secrets /etc/ppp/pap-secrets-bak
 207 else
 208     cp /dev/null /etc/ppp/pap-secrets-bak
 209 fi
 210 if [ -r /etc/ppp/chap-secrets ] ; then
 211     echo "  (But first backing it up to /etc/ppp/chap-secrets-bak)"
 212     copy /etc/ppp/chap-secrets /etc/ppp/chap-secrets-bak
 213 else
 214     cp /dev/null /etc/ppp/chap-secrets-bak
 215 fi
 216
 217 egrep -v "^$U|^\"$U\"" /etc/ppp/pap-secrets-bak > /etc/ppp/pap-secrets
 218 echo "\"$U\"   *       \"$PWD1\"       *" >> /etc/ppp/pap-secrets
 219 egrep -v "^$U|^\"$U\"" /etc/ppp/chap-secrets-bak > /etc/ppp/chap-secrets
 220 echo "\"$U\"   *       \"$PWD1\"       *" >> /etc/ppp/chap-secrets
 221
 222 echo ""
 223 echo ""
 224 echo ""
 225 echo "Congratulations, it should be all set up!"
 226 echo ""
 227 echo "Type: '/etc/rc.d/cable start'  - to bring up your CABLE link"
 228 echo "      '/etc/rc.d/cable stop'   - to bring it down"
 229 echo "      '/etc/rc.d/cable status' - to see the link status."
 230 exit 0