script/start_net.sh

   1 #!/bin/bash
   2
   3 #########################################
   4 # start_net script                      #
   5 # acx100 project                        #
   6 # acx100.sourceforge.net                #
   7 # edited by arnie <urnotwelcome@gmx.de> #
   8 #########################################
   9 # with modifications by craig           #
  10 # summary at end of file                #
  11 #########################################
  12
  13 # Please edit below
  14
  15 # syntax is: VARIABLENAME=VALUE, with _no_ spaces in between
  16 # make sure to _preserve_ any double-quotes (")
  17 # text beginning with the comment delimiter (#) is ignored
  18 # make sure to _preserve_ at least one space before any
  19 # comment delimiters (#) that do not begin a line
  20 # "uncommenting" a line means to remove it's leading "#" character
  21
  22 ESSID="network_down" # THIS IS CASE SeNsItIvE!! any == associate to any ESSID
  23 # Default rate configured as 11Mbps to not cause speed problems (while
  24 # using auto rate) or connection problems (while not using auto rate)
  25 # with non-22Mbps hardware...
  26 RATE=11M
  27 AUTORATE=1 # only disable auto rate if you know what you're doing...
  28 CHAN=1 # it's useful to try to stick to channels 1, 6 or 11 only, since these don't overlap with other channels
  29 #SHORTPREAMBLE=1 # set a value of 1 in order to force "Short Preamble" (incompatible with very old WLAN hardware!) instead of peer autodetect
  30 #TXPOWER=20 # 0..20 (dBm) (18dBm is firmware default) overly large setting might perhaps destroy your radio eventually!
  31 MODE=Managed # Managed for infrastructure, Ad-hoc for peer-to-peer. NOTE: Auto mode is not supported any more, you HAVE to select a specific mode!
  32 DEBUG=0xb # 0xffff for maximum debug info, 0 for none
  33
  34 # WEP Key(s)
  35 # ascii keys (passphrase) should look like this: KEY="s:asciikey"
  36 # hex keys should look like this: KEY="4378c2f43a"
  37
  38 # most wep users will want to use this line
  39 KEY=""
  40
  41 # alternatively, you can uncomment and use these lines to
  42 # set all 4 possible WEP keys
  43 #KEY1="1234567890"  #WEP64
  44 #KEY2="1234567890"
  45 #KEY3="1234567890"
  46 #KEY4="1234567890"
  47 # you must select which of the 4 keys above to use here:
  48 #KEY="[1]" # for KEY1, "[2]" for KEY2, etc
  49
  50 ALG=open # open == Open System, restricted == Shared Key
  51
  52 #IP address
  53
  54 USE_DHCP=0 # set to 1 for auto configuration instead of fixed IP setting
  55
  56 IP=192.168.1.98 # set this if you did not set USE_DHCP=1
  57 NETMASK=255.255.255.0 # set this if you did not set USE_DHCP=1
  58 GATEWAY=192.168.1.254 # set this if you did not set USE_DHCP=1
  59
  60 LED_OFF=1 # set to 1 to turn off the power LED to save power
  61
  62 MTU_576=0 # set to 1 if you have buffer management problems
  63
  64 # DO NOT EDIT BELOW THIS LINE
  65 ##################################################################
  66
  67
  68 if test "$UID" != "0"; then echo "You are not root. To insert the module into your kernel, you need to be root. Enter su and try again. Bailing..."; exit 1; fi
  69
  70 SYNC=`which sync`
  71 INSMOD=`which insmod`
  72 MODPROBE=`which modprobe`
  73 IFCONF=`which ifconfig`
  74 IWCONF=`which iwconfig`
  75 IWPRIV=`which iwpriv`
  76 ROUTE=`which route`
  77 SCRIPT_AT=`dirname $0`
  78
  79 # while we check for all 3, we run them in this
  80 # "preferred" order: dhcpcd, pump, dhclient
  81 # so if more than one exists it's ok
  82
  83 which dhcpcd &> /dev/null
  84 if [ $? -eq 0 ]; then DHCPCD=`which dhcpcd`; fi
  85
  86 which pump &> /dev/null
  87 if [ $? -eq 0 ]; then PUMP=`which pump`; fi
  88
  89 which dhclient &> /dev/null
  90 if [ $? -eq 0 ]; then DHCLIENT=`which dhclient`; fi
  91
  92 if test -z "$SYNC"; then echo "sync not found. Go get a sane Linux system. Bailing..."; exit 1; fi
  93 if test -z "$INSMOD"; then echo "insmod not found. Go get a sane Linux system. Bailing..."; exit 1; fi
  94 if test -z "$IFCONF"; then echo "ifconfig not found. I can insert the module for you, but you won't be able to configure your interface."; CONTINUE=ASK; fi
  95 if test -z "$IWCONF"; then echo "iwconfig not found. Make sure it is installed. The interface might work without, though."; CONTINUE=ASK; fi
  96
  97 if test -n "$CONTINUE"; then echo -n "Problems encountered. Do you want to continue? [n] "; read ANSWER
  98 case $ANSWER in  ( y | Y | Yes | YES | yes | j | J | ja | Ja | JA ) ;;
  99                  ( * ) exit 1 ;;
 100 esac
 101 fi
 102
 103 case "`uname -r`" in
 104         2.4*)
 105                 MODULE_AT="${SCRIPT_AT}/../src/acx_pci.o"
 106                 ;;
 107         *)
 108                 MODULE_AT="${SCRIPT_AT}/../src/acx_pci.ko"
 109                 ;;
 110 esac
 111
 112 if test ! -r "$MODULE_AT"; then echo "Module not found or not readable.
 113 Have you built it? This script expects it to be at ../src/acx_pci.[k]o, relative to the script's location. Bailing..."; exit 1; fi
 114
 115 # check whether any file name of the required main firmware file is
 116 # available in the acx100/firmware or global firmware directory
 117
 118 # FIRMWARE_AT has to be given as an absolute path!!
 119 for FIRMWARE_AT in "${SCRIPT_AT}/../firmware" "/usr/share/acx"; do
 120   for FW_FILE in WLANGEN.BIN TIACX111.BIN FwRad16.bin FW1130.BIN; do
 121     if test -r "$FIRMWARE_AT/$FW_FILE"; then
 122       #echo A firmware file has been found at "$FIRMWARE_AT/$FW_FILE"
 123       FW_FOUND=1
 124       break 2
 125     fi
 126   done
 127 done
 128
 129 if test "$FW_FOUND" != "1"; then
 130   echo "Firmware not found or not readable. Have you placed it in the firmware directory or run make extract_firmware once? This script expects it to be either at ../firmware/WLANGEN.BIN (or ../firmware/TIACX111.BIN for the ACX111 chip), relative to the script's location, OR have you placed it in the default directory:/usr/share/acx?. Bailing...";
 131   exit 1;
 132 fi
 133
 134 if test $AUTORATE != "1"; then
 135   if test "$RATE" != "11M"; then echo "Transfer rate is not set to 11
 136   Mbps, but $RATE (and not using auto rate either). If something doesn't work, try 11 Mbps or auto rate."; fi
 137 fi
 138
 139 test "$AUTORATE" = "1" && AUTO=auto || AUTO=
 140
 141 # for better debugging
 142 # set -x
 143 #echo 8 > /proc/sys/kernel/printk
 144
 145
 146 # just in case ;)
 147 $SYNC
 148
 149 sleep 1
 150
 151 DEV=wlan0 # this may become wlan1, wlan2, etc depending on if any other wlanX devices are found
 152
 153 if test -n "`lsmod | grep acx_pci`"; then ${SCRIPT_AT}/stop_net;fi
 154
 155 # now that the interface is "down", let's also check for and remove
 156 # those *really* old modules that might be supplied with some distributions
 157
 158 lsmod | grep acx100_pci &> /dev/null
 159 if test "$?" = "0"; then
 160         rmmod acx100_pci;
 161         echo "NOTICE: Found a very old version of the driver loaded (acx100_pci), removing."
 162         # we could also add the old module's name to the blacklist, though this
 163         # only benefits hotplug devices and might be considered invasive
 164         # echo acx100_pci >> /etc/hotplug/blacklist
 165 fi
 166
 167 # before inserting the module, let's check for the presence of existing wlan devices
 168 # and if necessary, adjust our $DEV variable to be wlan1, wlan2, etc.
 169 # these could be other wireless drivers' devs, or the device created by acx_usb
 170
 171 MAX_WLANS=9 # failsafe break counter
 172 while true
 173 do
 174         # at this point $DEV is always "wlan0"
 175         $IFCONF $DEV &> /dev/null
 176         if test "$?" = "0"; then
 177                 echo -n "$DEV exists, "
 178                 DIGIT=`echo $DEV | cut -d 'n' -f 2`
 179                 DIGIT=`expr $DIGIT + 1`
 180                 DEV="wlan${DIGIT}"
 181                 echo -n "trying $DEV..."
 182         else
 183                 echo "using $DEV."
 184                 break
 185         fi
 186
 187         # failsafe break
 188         if test $MAX_WLANS -eq 0; then break;fi
 189         MAX_WLANS=`expr $MAX_WLANS - 1`
 190 done
 191
 192 $MODPROBE -q firmware_class # Linux 2.6.x hotplug firmware loading support
 193 $INSMOD $MODULE_AT debug=$DEBUG firmware_dir=$FIRMWARE_AT
 194 if test "$?" = "0"; then echo "Module successfully inserted."; else echo "Error while inserting module! Bailing..."; exit 1; fi
 195
 196
 197 # before we get too involved in trying to setup $DEV, let's verify that it exists
 198 $IFCONF $DEV &> /dev/null
 199 if test "$?" = "0"; then # $DEV exists
 200
 201         if test -n "$IWCONF"; then
 202
 203                 if test -n "$RATE"; then
 204                 echo Setting rate to $RATE $AUTO.
 205                 $IWCONF $DEV rate $RATE $AUTO
 206                 test "$?" != "0" && echo Failed.
 207                 fi
 208                 if test -n "$CHAN"; then
 209                 echo Setting channel $CHAN.
 210                 $IWCONF $DEV channel $CHAN
 211                 test "$?" != "0" && echo Failed.
 212                 fi
 213                 if test -n "$SHORTPREAMBLE"; then
 214                 echo Setting short preamble to $SHORTPREAMBLE.
 215                 $IWPRIV $DEV SetSPreamble $SHORTPREAMBLE
 216                 test "$?" != "0" && echo Failed.
 217                 sleep 1
 218                 fi
 219                 if test -n "$TXPOWER"; then
 220                 echo Setting Tx power level to $TXPOWER dBm.
 221                 $IWCONF $DEV txpower $TXPOWER
 222                 test "$?" != "0" && echo Failed.
 223                 sleep 1
 224                 fi
 225
 226                 echo Going to try to join or setup ESSID $ESSID.
 227                 $IWCONF $DEV essid "$ESSID"
 228                 test "$?" != "0" && echo Failed.
 229
 230                 if test -n "$MODE"; then
 231                 echo Setting mode to $MODE.
 232                 $IWCONF $DEV mode $MODE
 233                 test "$?" != "0" && echo Failed.
 234                 fi
 235
 236
 237                 if test -n "$KEY1"; then
 238                 echo Setting key 1 to $KEY1, algorithm $ALG.
 239                 $IWCONF $DEV key $ALG "$KEY1" [1]
 240                 test "$?" != "0" && echo Failed.
 241                 fi
 242
 243                 if test -n "$KEY2"; then
 244                 echo Setting key 2 to $KEY2, algorithm $ALG.
 245                 $IWCONF $DEV key $ALG "$KEY2" [2]
 246                 test "$?" != "0" && echo Failed.
 247                 fi
 248
 249                 if test -n "$KEY3"; then
 250                 echo Setting key 3 to $KEY3, algorithm $ALG.
 251                 $IWCONF $DEV key $ALG "$KEY3" [3]
 252                 test "$?" != "0" && echo Failed.
 253                 fi
 254
 255                 if test -n "$KEY4"; then
 256                 echo Setting key 4 to $KEY4, algorithm $ALG.
 257                 $IWCONF $DEV key $ALG "$KEY4" [4]
 258                 test "$?" != "0" && echo Failed.
 259                 fi
 260
 261                 # this is now placed after the "KEY%D" stuff
 262                 # to support the "KEY=[1]" option
 263
 264                 if test -n "$KEY"; then
 265                 echo Setting key to $KEY, algorithm $ALG.
 266                 $IWCONF $DEV key "$KEY" $ALG
 267                 test "$?" != "0" && echo Failed.
 268                 fi
 269
 270         fi # end "if found(iwconfig)"
 271
 272         # for notebook use - a power LED is sooo useless anyway ;-))
 273         if test "$LED_OFF" -eq 1; then
 274                 test -n "$IWPRIV" && "$IWPRIV" $DEV SetLEDPower 0
 275                 echo Setting power LED to off.
 276         fi
 277
 278         # It shouldn't hurt to bring the device up, and dhcp seems to like it that way
 279         $IFCONF $DEV up
 280         sleep 1
 281
 282         # if they want dhcp or they've set to managed mode, then we
 283         # take up to 10 seconds to wait for something to show up
 284         # in iwconfig besides zeros, we don't want to give the user
 285         # the wrong impression re: success/failure and mainly we don't
 286         # want to bother with a dhcp attempt without association
 287         # we could also use /proc/driver/acx_$DEV instead ??
 288
 289         # check MODE for some form of the word "managed", case-insensitive
 290         echo $MODE | grep -ic managed &> /dev/null
 291
 292         if test "$?" = "0" -o $USE_DHCP -eq 1; then # begin test for association
 293                 WAIT_ASSOC=10
 294                 echo -n "Waiting for association..."
 295
 296                 while true
 297                 do
 298                         echo -n "$WAIT_ASSOC "
 299
 300                         if test "`$IWCONF $DEV | grep -c 00:00:00:00:00:00`" = "0"; then
 301                                 echo "OK."
 302
 303                                 # ok, have association, now verify that the card associated with
 304                                 # the desired AP, it could easily have found a stray linksys instead ;^}
 305                                 if test -n "$ESSID"; then
 306                                         echo "$ESSID" | grep -ic any &> /dev/null # don't bother checking "essid=any"
 307                                         if test "$?" = "0" -a "`$IWCONF $DEV | grep -c $ESSID`" = "0"; then
 308                                                 echo "NOTICE: $DEV associated, but NOT with $ESSID!"
 309                                         fi
 310                                 fi
 311                                 break
 312                         fi
 313
 314                         WAIT_ASSOC=`expr $WAIT_ASSOC - 1`
 315
 316                         if test "$WAIT_ASSOC" = "0"; then
 317                                 echo FAILED.
 318                                 # if they wanted dhcp, tell them the bad news
 319                                 if test $USE_DHCP -eq 1; then
 320                                         echo "Error: $DEV failed to associate, can't use DHCP for IP address."
 321                                         USE_DHCP=0;
 322                                 fi
 323                                 break
 324                         fi
 325
 326                         # we *could* issue an iwconfig here at the end of each loop:
 327                         # $IWCONF $DEV essid $ESSID
 328                         # I'm not sure if it would help or hinder...it isn't necessary w/my hardware
 329
 330                         sleep 1 # give it a second
 331                 done
 332         fi # end test for association, if mode=managed or USE_DHCP=1
 333
 334
 335         if test $USE_DHCP -eq 1; then
 336                 # now we fetch an IP address from DHCP
 337                 # first, try dhcpcd:
 338                 if test -n "$DHCPCD"; then
 339                         echo -n "Attempting to use $DHCPCD for DHCP, this may take a moment..."
 340                         rm -f /etc/dhcpc/dhcpcd-$DEV.pid > /dev/null
 341                         $DHCPCD -d $DEV -t 5 &> /dev/null
 342                         if test "$?" = "0"; then
 343                                 echo "OK."
 344                                 echo "Interface has been set up successfully.";
 345                         else echo "FAILED"
 346                         fi
 347                 # no dhcpcd was found, next we try pump:
 348                 elif test -n "$PUMP"; then
 349                         echo -n "Attempting to use $PUMP for DHCP, this may take a moment..."
 350                         $PUMP -i $DEV &> /dev/null
 351                         if test "$?" = "0"; then
 352                                 echo "OK."
 353                                 echo "Interface has been set up successfully.";
 354                         else echo "FAILED"
 355                         fi
 356                 # no dhcpcd or pump was found, finally we try dhclient;
 357                 elif test -n "$DHCLIENT"; then
 358                         echo -n "Attempting to use $DHCLIENT for DHCP, this may take a moment..."
 359                         rm -f /var/run/dhclient.pid
 360                         $DHCLIENT $DEV &> /dev/null
 361                         if test "$?" = "0"; then
 362                                 echo "OK."
 363                                 echo "Interface has been set up successfully.";
 364                         else echo "FAILED"
 365                         fi
 366                 else # dhcpcd, pump, and dhclient not found, inform user and bail
 367                         echo "ERROR: USE_DHCP=1 , but no dhcp clients could be found"
 368                         echo "Bailing..."
 369                         exit 1;
 370                 fi #end check for usable dhcp client
 371         else # wants manual config
 372                 # Hehe, this can be done after iwconfigs now :)
 373                 $IFCONF $DEV $IP netmask $NETMASK
 374                 if test "$?" != "0"; then
 375                         echo "Error in \"$IFCONF $DEV $IP netmask $NETMASK\". Bailing..."; exit 1;
 376                 else
 377                         echo "Interface has been set up successfully.";
 378                         test -n "$GATEWAY" && $ROUTE add default gw $GATEWAY $DEV
 379                 fi
 380         fi # end if USE_DHCP=1
 381
 382         # ugly workaround for buffer management problems
 383         if test "$MTU_576" -eq 1; then
 384                 echo "Setting mtu down to 576. NOTE that e.g. IPv6 would need >= 1280, so make sure you're doing the right thing here!"
 385                 test -n "$IFCONF" && "$IFCONF" $DEV mtu 576
 386                 if test "$?" != "0"; then echo "Error in \"$IFCONF $DEV mtu 576\". Bailing..."; exit 1; fi
 387         fi
 388
 389 else # $DEV is not found by ifconfig
 390   echo "Error: Failed to create device: $DEV...bailing."
 391   exit 1;
 392 fi # end test for $DEV exists
 393
 394
 395
 396 # just in case ;)
 397 $SYNC
 398
 399 ##############################################################
 400 # summary of craig's changes to pf33's start_net:
 401
 402 # added SET_LED and MTU_576 vars, moved DEV below the do-not-edit line
 403 # changed KEY0-KEY3 vars to KEY1-KEY4 to match iwconfig's scheme
 404 # added a line for selecting a numbered key eg: "KEY=[1]"
 405 # moved setting wep key to last in the order for above to work
 406 # added attempt to automagically find/use a dhcp client
 407 # added checking for firmware in /usr/share/acx before bailing
 408 # check for and unload the old acx100_pci module if present
 409 # don't assume $DEV is going to always be wlan0 (needs more work)
 410 # don't assume that $DEV exists, even after a successful module load
 411 # if MODE=managed || USE_DHCP=1, wait for association
 412 # upon assoc, test for correct SSID if one was specified
 413 # added $DEV to route add default gw command
 414 ##############################################################
 415
 416 # end of file