minix/commands/netconf/netconf.sh

   1 #!/bin/sh
   2 #
   3 #       netconf 0.2 - Configure network
   4 #
   5 # Changes:
   6 #       v0.2: rewrite for NetBSD network infrastructure
   7 #        - the primary choice is now for an interface, not a network card;
   8 #        - manual driver configuration is now an exception;
   9 #        - the menu transition system is slightly more solid;
  10 #        - all non-interactive functionality has been removed.
  11 #
  12
  13 # Get system config
  14 . /etc/rc.conf
  15
  16 LOCALRC=/usr/etc/rc.local
  17 IFCONF=/etc/ifconfig.
  18 RESOLVCONF=/etc/resolv.conf
  19 HOSTNAME=/etc/hostname.file
  20 USRKBFILE=/.usrkb
  21
  22 prefix=""
  23 cd="no" # running from cd?
  24 changed="no" # have any ifconfig.if(5) files been changed?
  25
  26 usage()
  27 {
  28     cat >&2 <<'EOF'
  29 Usage:
  30
  31   netconf [-lh] [-p <prefix>]
  32
  33   flags:
  34      -l Print a list of configurable interfaces
  35      -h Print this help file
  36      -p Set a path prefix for all configuration files (e.g., /mnt)
  37 EOF
  38     exit 1
  39 }
  40
  41 backup_file()
  42 {
  43         # Do not make backups if we're running from CD.
  44         if [ "$cd" != "yes" -a -f "$1" ]; then
  45                 mv "$1" "$1~" || exit 1
  46                 echo
  47                 echo "Backed up $1 to $1~"
  48         fi
  49 }
  50
  51 select_number()
  52 {
  53         while true; do
  54                 echo -n "$4 [$3] "
  55                 read input
  56                 case "$input" in
  57                 '')
  58                         return $3
  59                         ;;
  60                 *[!0-9]*)
  61                         ;;
  62                 *)
  63                         [ $input -ge $1 -a $input -le $2 ] && return $input
  64                         ;;
  65                 esac
  66         done
  67 }
  68
  69 interfaces()
  70 {
  71         # Get a list of interfaces that are not virtual (i.e., cloners). There
  72         # is always one virtual interface type ("lo", loopback).
  73         cloners_regex='^('`ifconfig -C | sed 's/ /[0-9]|/g'`'[0-9])'
  74         iflist=`ifconfig -l | tr ' ' '\n' | grep -vE "$cloners_regex"`
  75
  76         ifcount=0
  77         ifunconf=0 # the first interface with no configuration file, or 0
  78         if [ -z "$iflist" ]; then
  79                 echo "    No network hardware interfaces detected!"
  80         else
  81                 for if in $iflist; do
  82                         ifcount=$(($ifcount + 1))
  83                         if [ -r $IFCONF$if ]; then
  84                                 info="($1)"
  85                         else
  86                                 [ $ifunconf -eq 0 ] && ifunconf=$ifcount
  87                                 info=""
  88                         fi
  89                         printf "%2d. %-8s %s\n" $ifcount "$if" "$info"
  90                 done
  91         fi
  92 }
  93
  94 do_step1()
  95 {
  96         echo "
  97 The following network interfaces are available for configuration. These are
  98 interfaces corresponding to network drivers that are currently running. If no
  99 interface is listed for your network card here, then either MINIX 3 does not
 100 support your card, or, if it is not a plug-and-play device, it may require
 101 manual configuration first.
 102
 103 Please choose the interface you would like to configure, or another option.
 104 "
 105         interfaces "already configured"
 106         echo
 107         manual_choice=$(($ifcount + 1))
 108         quit_choice=$(($ifcount + 2))
 109         printf "%2d. Manually configure an ethernet driver\n" $manual_choice
 110         printf "%2d. Quit\n\n" $quit_choice
 111
 112         default_choice=$ifunconf
 113         [ $default_choice -eq 0 ] && default_choice=$quit_choice
 114
 115         select_number 1 $quit_choice $default_choice "Interface choice?"
 116         choice=$?
 117
 118         case $choice in
 119         $manual_choice)
 120                 step=do_stepM
 121                 ;;
 122         $quit_choice)
 123                 ;;
 124         *)
 125                 ifchoice="$(echo $iflist | cut -d' ' -f$choice)"
 126                 step=do_step2
 127         esac
 128 }
 129
 130 do_stepM()
 131 {
 132         # TODO: it would be nice if this list changed on a per-platform basis..
 133         echo "
 134 MINIX 3 has drivers for a limited number of older cards that require manual
 135 configuration. They are shown below. Please choose one of the listed options.
 136
 137  1. 3Com 501 or 3Com 509 based ISA card (i386)
 138  2. NE2000, 3Com 503, or WD based ISA card (i386) (emulated by Bochs, Qemu)
 139
 140  3. Go back to interface selection
 141  4. Quit
 142 "
 143
 144         select_number 1 4 4 "Card choice?"
 145
 146         case $? in
 147         1)
 148                 driver=dpeth
 149                 driverargs="#dpeth_args='DPETH0=port:irq:memory'"
 150                 echo "
 151 Note: After installing, edit $LOCALRC to the right configuration."
 152                 ;;
 153         2)
 154                 driver=dp8390
 155                 driverargs="dp8390_args='DPETH0=300:9'"
 156                 echo "
 157 Note: After installing, edit $LOCALRC to the right configuration.
 158 You may then also have to edit /etc/system.conf.d/dp8390 to match.
 159 For now, the defaults for emulation by Bochs/Qemu have been set."
 160                 ;;
 161         3)
 162                 step=do_step1
 163                 return
 164                 ;;
 165         4)
 166                 return
 167                 ;;
 168         esac
 169
 170         backup_file "$LOCALRC"
 171         echo "# Generated by netconf(8). Edit as necessary." > $LOCALRC
 172         echo "netdriver='"$driver"'" >> $LOCALRC
 173         echo "$driverargs" >> $LOCALRC
 174
 175         # $LOCALRC typically expands to /mnt/usr/etc/rc.local, so leave room..
 176         echo "
 177 A template to start the driver has been written to $LOCALRC . As
 178 noted above, you may have to edit it. Once you are done editing, reboot the
 179 system, after which the driver will be started. Once the driver is running,
 180 you can run 'netconf' to configure the corresponding network interface."
 181 }
 182
 183 do_step2()
 184 {
 185         iffile="$IFCONF$ifchoice"
 186
 187         echo "
 188 Configure interface $ifchoice using DHCP or manually?
 189
 190 For now, the choice here is primarily about IPv4. With DHCP it is possible to
 191 enable IPv6 as well. Even if the local network has no IPv6 facilities, enabling
 192 IPv6 should do no harm. For IPv6-only mode or any other configuration that is
 193 not supported here, you will have to edit $iffile yourself.
 194
 195  1. Automatically using DHCP (IPv4 + IPv6)
 196  2. Automatically using DHCP (IPv4 only)
 197  3. Manually (IPv4 only)"
 198
 199         if [ -r "$iffile" ]; then
 200                 echo " 4. Remove current configuration"
 201                 remove_choice=4
 202                 goback_choice=5
 203                 quit_choice=6
 204         else
 205                 remove_choice=X
 206                 goback_choice=4
 207                 quit_choice=5
 208         fi
 209
 210         echo
 211         printf "%2d. Go back to interface selection\n" $goback_choice
 212         printf "%2d. Quit\n\n" $quit_choice
 213
 214         select_number 1 $quit_choice 1 "Configuration choice?"
 215
 216         case $? in
 217         1)
 218                 backup_file "$iffile"
 219                 echo 'up' > $iffile
 220                 echo '!dhcpcd -qM $int' >> $iffile
 221
 222                 echo
 223                 echo "Interface $ifchoice configured for DHCP (IPv4 + IPv6)."
 224                 step=do_step3
 225                 ;;
 226         2)
 227                 backup_file "$iffile"
 228                 echo 'up' > $iffile
 229                 echo '!dhcpcd -qM -4 $int' >> $iffile
 230
 231                 echo
 232                 echo "Interface $ifchoice configured for DHCP (IPv4 only)."
 233                 step=do_step3
 234                 ;;
 235         3)
 236                 # Query user for settings
 237                 #
 238                 # Some of these settings (hostname, nameservers) do not apply
 239                 # to just the selected interface. Still, they are what one has
 240                 # to specify for a complete manual configuration. In order to
 241                 # make manual configuration of multiple interfaces less
 242                 # frustrating in this regard, offer defaults that match what
 243                 # may just have been set already.
 244
 245                 echo
 246
 247                 # Hostname
 248                 if [ -r $HOSTNAME ]; then
 249                         hostname_default=$(cat $HOSTNAME)
 250                 else
 251                         hostname_default="minix"
 252                 fi
 253                 echo -n "Hostname [$hostname_default]: "
 254                 read hostname
 255                 if [ -z "$hostname" ]; then
 256                         hostname="$hostname_default"
 257                 fi
 258
 259                 # IP address
 260                 ip=""
 261                 while [ -z "$ip" ]; do
 262                         echo -n "IP address []: "
 263                         read ip
 264                 done
 265
 266                 # Netmask
 267                 echo -n "Netmask (optional) []: "
 268                 read netmask
 269                 [ -n "$netmask" ] && netmask=" netmask $netmask"
 270
 271                 # Gateway (no gateway is fine for local networking)
 272                 echo -n "Gateway (optional) []: "
 273                 read gateway
 274
 275                 # DNS Servers
 276                 dns1_default="$(grep '^nameserver' $RESOLVCONF 2>/dev/null | \
 277                     sed '1q' | awk '{print $2}')"
 278                 dns2_default="$(grep '^nameserver' $RESOLVCONF 2>/dev/null | \
 279                     sed '2q;d' | awk '{print $2}')"
 280
 281                 echo -n "Primary DNS Server [$dns1_default]: "
 282                 read dns1
 283                 [ -z "$dns1" ] && dns1="$dns1_default"
 284
 285                 if [ -n "$dns1" ]; then
 286                         echo -n "Secondary DNS Server (optional) [$dns2_default]: "
 287                         read dns2
 288                         [ -z "$dns2" ] && dns2="$dns2_default"
 289                 else
 290                         dns2=""
 291                 fi
 292
 293                 backup_file "$HOSTNAME"
 294                 echo "$hostname" > $HOSTNAME
 295                 hostname "$hostname"
 296
 297                 backup_file "$iffile"
 298                 echo 'up' > $iffile
 299                 echo "inet $ip$netmask" >> $iffile
 300                 if [ -n "$gateway" ]; then
 301                         echo "!route -q add default $gateway" >> $iffile
 302                 fi
 303
 304                 if [ -n "$dns1" ]; then
 305                         backup_file "$RESOLVCONF"
 306                         echo "nameserver $dns1" > $RESOLVCONF
 307                         if [ -n "$dns2" ]; then
 308                                 echo "nameserver $dns2" >> $RESOLVCONF
 309                         fi
 310                 fi
 311
 312                 echo
 313                 echo "Interface $ifchoice configured manually."
 314                 step=do_step3
 315                 ;;
 316         $remove_choice)
 317                 backup_file "$iffile"
 318                 rm -f "$iffile"
 319                 echo
 320                 echo "Removed configuration for interface $ifchoice."
 321                 step=do_step3
 322                 ;;
 323         $goback_choice)
 324                 step=do_step1
 325                 ;;
 326         esac
 327 }
 328
 329 do_step3()
 330 {
 331
 332         # We get here only if one of the ifconfig.if(5) files have changed.
 333         changed="yes"
 334
 335         echo "
 336 Do you want to configure additional interfaces?
 337
 338 You can also invoke the 'netconf' command as root at any later time.
 339
 340  1. Go back to interface selection
 341  2. Quit
 342 "
 343
 344         # Note that "quit" is deliberately the default choice: most people will
 345         # want to configure at most one interface, and keep pressing Enter in
 346         # order to make it through the setup procedure as easily as possible.
 347         select_number 1 2 2 "Menu choice?"
 348
 349         [ $? -eq 1 ] && step=do_step1
 350 }
 351
 352 # Parse options
 353 while getopts "p:hl" arg; do
 354     case "$arg" in
 355         p) prefix=$OPTARG; ;;
 356         h) usage ;;
 357         l) echo "The following network hardware interfaces are detected:"
 358            echo
 359            interfaces "configured"
 360            exit 0
 361            ;;
 362         \?) echo "Unknown option -$OPTARG"; usage ;;
 363         :) echo "Missing required argument for -$OPTARG"; usage ;;
 364         *)  usage ;;
 365     esac
 366 done
 367
 368 if [ -n "$prefix" ] ; then
 369     if [ ! -d $prefix ]; then
 370         echo -e "It seems the supplied prefix (\`$prefix') is invalid."
 371         exit 1
 372     fi
 373     LOCALRC=$prefix$LOCALRC
 374     IFCONF=$prefix$IFCONF
 375     RESOLVCONF=$prefix$RESOLVCONF
 376     HOSTNAME=$prefix$HOSTNAME
 377 fi
 378
 379 if [ `whoami` != root ] ; then
 380     echo "Please run netconf as root."
 381     exit 1
 382 fi
 383
 384 if ! ifconfig -l >/dev/null 2>&1; then
 385     echo "Unable to obtain a list of interfaces. Is the LWIP service running?"
 386     exit 1
 387 fi
 388
 389 # Are we running from CD?
 390 if [ -f "$USRKBFILE" ] ; then
 391     cd="yes" # We are running from CD
 392 fi
 393
 394 # The interactive program.
 395 step=do_step1
 396 while [ $step != exit ]; do
 397         proc=$step
 398         step=exit
 399         $proc
 400 done
 401
 402 # Skip printing this last bit of information if it will not actually work.  The
 403 # fact that it will not work on the CD (i.e. from the setup program) at least
 404 # yet, is also the reason why we do not simply issue the command ourselves
 405 # right now.  We might reconsider this later.
 406 if [ "$changed" = "yes" -a -z "$prefix" ]; then
 407         echo
 408         echo "One or more of the interface configuration files have been changed."
 409         echo "You can use the command 'service network restart' to reload them now."
 410 fi
 411
 412 # Aesthetics.
 413 echo
 414
 415 exit 0