#!/bin/sh

#

# $Id: Customize,v 1.9 2005/05/11 13:02:18 abe Exp $

#

# Customize: customize dialect's machine.h header file.

#

# Allows easy modification of some important compile-time definitions for

# lsof, made in the dialect's machine.h header file, including:

#

#	HASSECURITY	the security option

#	HASNOSOCKSECURITY

#			the socket oberalization of HASSECURITY

#	HASDCACHE	enabling/disabling the device cache file

#			(Note: changing the device cache file option isn't

#			       offered when machine.h contains NEVER_HASDCACHE

#			       anywhere, including in a comment.)

#	HASENVDC	enabling/disabling device cache path from environment

#	HASKERNIDCK	enabling/disabling the kernel identity check

#			(not done for some dialects)

#	HASPERSDC	enabling/disabling personal device cache path

#			construction

#	HASPERSDCPATH	enabling/disabling additional personal device cache

#			path component

#	HASSYSDC	enabling/disabling system-wide device cache file path

#	HASXOPT_ROOT	enabling/disabling root use of the -X option

#	WARNDEVACCESS	enabling inaccessible /dev node warnings

#			(Note: changing the inaccessible /dev/node warning

#			       option isn't offered when machine.h contains

#			       NEVER_WARNDEVACCESS anywhere, including in a

#			       comment.)

#	WARNINGSTATE	enable/disabling default warning message state

#

# Usage: Customize [dialect_directory]

#

# where: dialect_directory (optional) is the directory in which the dialect's

#	 dialect's sources, Makefile and scripts are found

OLD=machine.h

NEW=new_machine.h

# Save optional dialect directory.

if test $# -eq 1

then

  DialDir=$1

else

  DialDir=""

fi

# Establish trap and stty handling.

ISIG=":"

trap 'rm -f $NEW; $ISIG; exit 1' 1 2 3 15

stty -a 2>&1 | grep isig > /dev/null

if test $? -eq 0

then

  stty -a 2>&1 | egrep -e -isig > /dev/null

  if test $? -eq 0

  then

    ISIG="stty -isig"

    stty isig

  fi

fi

# Decide how to use echo.

ECHO=`echo -n ""`

if test "X$ECHO" = "X-n "

then

  EC="\c"

  EO=""

else

  EC=""

  EO="-n"

fi

# Decide how to use tail(1).

TMP1=`tail -n 1 $0 2> /dev/null`

if test $? -eq 0 -a "X$TMP1" = "X#LAST_LINE"

then

  TA="-n 1"

else

  TA="-1"

fi

# Display the introduction and basic explanation.

cat << .CAT_MARK

You may now customize the machine.h header file for this UNIX

dialect.  The customizations will take effect when you compile

lsof.  You may also choose to skip customization and proceed to

the compilation of lsof.

If you don't know if you need to customize or want to know more

about what you can customize, consult the 00DCACHE, 00FAQ, 00PORTING,

and 00README files of the lsof distribution.  You might also find

it helpful to examine the machine.h header file for the dialect

you're customizing.

You don't need to use this procedure to customize lsof; you can

edit the machine.h header file directly.  If you later decide you

want to use this procedure to customize machine.h, execute the

./Customize script.

.CAT_MARK

END=0

while test $END -eq 0

do

  echo ""

  echo $EO "Do you want to customize (y|n) [y]? $EC"

  read ANS EXCESS

  if test "X$ANS" = "Xn" -o "X$ANS" = "XN"

  then

    exit 0

  fi

  if test "X$ANS" = "Xy" -o "X$ANS" = "XY" -o "X$ANS" = "X"

  then

    echo ""

    echo "Customizing ..."

    END=1

  else

    echo ""

    echo "Please answer y|n [y]."

  fi

done

# See if $OLD exists.

if test ! -r $OLD

then

  echo ""

  echo "FATAL: The file \"$OLD\" doesn't exist.  Customization can't"

  echo "continue without it."

  echo ""

  echo "Did you run the Configure script?"

  echo ""

  echo "Customize quits."

  echo ""

  exit 1

fi

# See if $NEW exists.

if test -r $NEW

then

  echo ""

  echo "====================================================================="

  echo ""

  echo "WARNING: \"$NEW\" exists.  Customization will replace it."

  END=0

  while test $END -eq 0

  do

    echo ""

    echo $EO "Do you want to remove $NEW (y|n) [y]? $EC"

    read ANS EXCESS

    if test "X$ANS" = "Xy" -o "X$ANS" = "XY" -o "X$ANS" = "X"

    then

      echo ""

      echo "Removing $NEW"

      echo ""

      rm -f $NEW

      END=1

    else

      if test "X$ANS" = "Xn" -o "X$ANS" = "XN"

      then

        echo ""

        echo "FATAL: Customize quits; it must be able to create \"$NEW\"."

        echo ""

        exit 1

      else

        echo ""

        echo "Please answer y|n [y]."

      fi

    fi

  done

fi

# Process HASSECURITY.

cat << .CAT_MARK

=====================================================================

When HASSECURITY is enabled, only the root user may use lsof to

examine all open files; other users may examine only the files

belonging to the real user ID of their lsof process.  If

HASNOSOCKSECURITY is also defined, anyone may list anyone else's

open socket files, provided their listing is selected with the "-i"

option.

When HASSECURITY is disabled, anyone may use lsof to examine all

open files.

.CAT_MARK

grep HASSECURITY $OLD | tail $TA | egrep "^#define" > /dev/null

if test $? -eq 0

then

  echo "HASSECURITY is enabled."

  NSEC=1

else

  echo "HASSECURITY is disabled."

  NSEC=0

fi

END=0

while test $END -eq 0

do

  echo ""

  if test $NSEC -eq 1

  then

    echo $EO "Disable HASSECURITY (y|n) [n]? $EC"

  else

    echo $EO "Enable HASSECURITY (y|n) [n]? $EC"

  fi

  read ANS EXCESS

  if test "X$ANS" = "Xy" -o "X$ANS" = "XY"

  then

    echo ""

    if test $NSEC -eq 1

    then

      NSEC=0

      echo "HASSECURITY will be disabled."

    else

      NSEC=1

      echo "HASSECURITY will be enabled."

    fi

    END=1

  else

    if test "X$ANS" = "Xn" -o "X$ANS" = "XN" -o "X$ANS" = "X"

    then

      echo ""

      echo "HASSECURITY will not be changed."

      END=1

    else

      echo ""

      echo "Please answer y|n [n]."

    fi

  fi

done

# If HASSECURITY is enabled, see if HASNOSOCKSECURITY should also be defined.

if test $NSEC -eq 1

then

  cat << .CAT_MARK

====================================================================

When HASSECURITY is enabled, you may also define HASNOSOCKSECURITY.

When both are defined, no one but root may list all of anyone else's

open files -- only their own open files -- but anyone may list

anyone else's open socket files.

This option is useful with ntop (http://www.ntop.org).

.CAT_MARK

  grep HASNOSOCKSECURITY $OLD | tail $TA | egrep "^#define" > /dev/null

  if test $? -eq 0

  then

    echo "HASNOSOCKSECURITY is enabled."

    SOCKSEC=1

  else

    echo "HASNOSOCKSECURITY is disabled."

    SOCKSEC=0

  fi

  END=0

  while test $END -eq 0

  do

    echo ""

    if test $SOCKSEC -eq 1

    then

      echo $EO "Disable HASNOSOCKSECURITY (y|n) [n]? $EC"

    else

      echo $EO "Enable HASNOSOCKSECURITY (y|n) [n]? $EC"

    fi

    read ANS EXCESS

    if test "X$ANS" = "Xy" -o "X$ANS" = "XY"

    then

      echo ""

      if test $SOCKSEC -eq 1

      then

        SOCKSEC=0

        echo "HASNOSOCKSECURITY will be disabled."

      else

        SOCKSEC=1

        echo "HASNOSOCKSECURITY will be enabled."

      fi

      END=1

    else

      if test "X$ANS" = "Xn" -o "X$ANS" = "XN" -o "X$ANS" = "X"

      then

        echo ""

        echo "HASNOSOCKSECURITY will not be changed."

        END=1

      else

        echo ""

        echo "Please answer y|n [n]."

      fi

    fi

  done

else

  SOCKSEC=0

fi

# Process WARNINGSTATE.

cat << .CAT_MARK

=====================================================================

When WARNINGSTATE is enabled, lsof will will issue whatever warning

messages it finds necessary.  When WARNINGSTATE is disabled, lsof

will issue no warning messages.  For individual uses of lsof, -w

disables warning state and +w enables it.

.CAT_MARK

grep WARNINGSTATE $OLD | tail $TA | egrep "^#define" > /dev/null

if test $? -eq 0

then

  echo "WARNINGSTATE is disabled."

  WST=0

else

  echo "WARNINGSTATE is enabled."

  WST=1

fi

END=0

NWST=$WST

while test $END -eq 0

do

  echo ""

  if test $NWST -eq 0

  then

    echo $EO "Enable WARNINGSTATE? (y|n) [n]? $EC"

  else

    echo $EO "Disable WARNINGSTATE? (y|n) [n]? $EC"

  fi

  read ANS EXCESS

  if test "X$ANS" = "Xy" -o "X$ANS" = "XY"

  then

    echo ""

    if test $NWST -eq 0

    then

      echo "WARNINGSTATE will be enabled."

      NWST=1

    else

      echo "WARNINGSTATE will be disabled."

      NWST=0

    fi

    END=1

  else

    if test "X$ANS" = "Xn" -o "X$ANS" = "XN" -o "X$ANS" = "X"

    then

      echo ""

      echo "WARNINGSTATE will not be changed."

      END=1

    else

      echo ""

      echo "Please answer y|n [n]."

    fi

  fi

done

# Process WARNDEVACCESS, unless the dialect's machine.h header file contains

# NEVER_WARNDEVACCESS.

grep NEVER_WARNDEVACCESS $OLD > /dev/null

if test $? -eq 0

then

  NEVERWDA=1

  NWDA=0

else

  NEVERWDA=0

  cat << .CAT_MARK

=====================================================================

When WARNDEVACCESS is enabled, lsof will issue warning messages

when it can't access nodes in /dev (or /devices), subject to the

default or explicit (-w) WARNINGSTATE.

When WARNDEVACCESS is disabled, lsof will silently skip nodes in

/dev (or /devices) that it can't access.

.CAT_MARK

  grep WARNDEVACCESS $OLD | tail $TA | egrep "^#define" > /dev/null

  if test $? -eq 0

  then

    echo "WARNDEVACCESS is enabled."

    WDA=1

  else

    echo "WARNDEVACCESS is disabled."

    WDA=0

  fi

  END=0

  NWDA=$WDA

  while test $END -eq 0

  do

    echo ""

    if test $NWDA -eq 1

    then

      echo $EO "Disable WARNDEVACCESS (y|n) [n]? $EC"

    else

      echo $EO "Enable WARNDEVACCESS (y|n) [n]? $EC"

    fi

    read ANS EXCESS

    if test "X$ANS" = "Xy" -o "X$ANS" = "XY"

    then

      echo ""

      if test $NWDA -eq 1

      then

        echo "WARNDEVACCESS will be disabled."

        NWDA=0

      else

        echo "WARNDEVACCESS will be enabled."

        NWDA=1

      fi

      END=1

    else

      if test "X$ANS" = "Xn" -o "X$ANS" = "XN" -o "X$ANS" = "X"

      then

	echo ""

	echo "WARNDEVACCESS will not be changed."

        END=1

      else

        echo ""

        echo "Please answer y|n [n]."

      fi

    fi

  done

fi

# Process HASDCACHE, unless the dialect's machine.h header file contains

# NEVER_HASDCACHE.

ENVV=""

ENVN=0

PDCV=""

PDCN=0

PDCPV=""

PDCPN=0

SDCV=""

SDCN=0

grep NEVER_HASDCACHE $OLD > /dev/null

if test $? -eq 0

then

  NEVERDC=1

  CDC=0

  DC=0

  NDC=0

else

  NEVERDC=0

  cat << .CAT_MARK

=====================================================================

When HASDCACHE is enabled, lsof will write a device cache file that

contains information about the nodes in /dev (or /devices).  The

options HASENVDC, HASPERSDC, HASPERSDCPATH, and HASSYSDC define

the device cache file path.

When HASDCACHE is disabled, lsof won't write a device cache file.

Consult the 00DCACHE and 00FAQ files of the lsof distribution for

more information.

.CAT_MARK

  grep HASDCACHE $OLD | tail $TA | egrep "^#define" > /dev/null

  if test $? -eq 0

  then

    echo "HASDCACHE is enabled."

    DC=1

  else

    echo "HASDCACHE is disabled."

    DC=0

  fi

  END=0

  NDC=$DC

  while test $END -eq 0

  do

    echo ""

    if test $NDC -eq 1

    then

      echo $EO "Disable HASDCACHE (y|n) [n]? $EC"

    else

      echo $EO "Enable HASDCACHE (y|n) [n]? $EC"

    fi

    read ANS EXCESS

    if test "X$ANS" = "Xy" -o "X$ANS" = "XY"

    then

      echo ""

      if test $NDC -eq 1

      then

        echo "HASDCACHE will be disabled."

        NDC=0

      else

        echo "HASDCACHE will be enabled."

        NDC=1

      fi

      END=1

    else

      if test "X$ANS" = "Xn" -o "X$ANS" = "XN" -o "X$ANS" = "X"

      then

	echo ""

	echo "HASDCACHE will not be changed."

        END=1

      else

        echo ""

        echo "Please answer y|n [n]."

      fi

    fi

  done

  # See if other device cache options need to be declared.

  if test $DC -eq 1 -a $NDC -eq 1

  then

    cat << .CAT_MARK

=====================================================================

You have decided that HASDCACHE should be defined.  There are other

definitions associated with HASDCACHE that specify options for the

formation of the device cache file path.  You may change them.

Consult the 00DCACHE and 00FAQ files of the lsof distribution for

more information.

The current path options are:

.CAT_MARK

    grep HASENVDC $OLD | tail $TA | egrep "^#define"

    egrep "HASPERSDC$|HASPERSDC[ 	]" $OLD | tail $TA | egrep "^#define"

    grep HASPERSDCPATH $OLD | tail $TA | egrep "^#define"

    grep HASSYSDC $OLD | tail $TA | egrep "^#define"

    END=0

    while test $END -eq 0

    do

      echo ""

      echo $EO "Do you want to change path options (y|n) [n]? $EC"

      read ANS EXCESS

      if test "X$ANS" = "Xy" -o "X$ANS" = "XY"

      then

        CDC=1

        END=1

      else

        if test "X$ANS" = "Xn" -o "X$ANS" = "XN"

        then

	  CDC=0

	  END=1

        else

	  if test "X$ANS" = "X"

	  then

	    echo ""

	    echo "The path options will not be changed."

	    CDC=0

	    END=1

	  else

	    echo ""

	    echo "Please answer y|n [n]."

	  fi

        fi

      fi

    done

  else

    CDC=0

  fi

  if test \( $NDC -eq 1 -a $DC -eq 0 \) -o \( $DC -eq 1 -a $CDC -eq 1 \)

  then

    cat << .CAT_MARK

=====================================================================

You may specify for HASENVDC the name of the environment variable

from which lsof should take the device cache file path for non-root

users.  Press ENTER to use the current value of HASENVDC:

.CAT_MARK

    echo $EO "        $EC"

    TMP1=`grep HASENVDC $OLD | tail $TA | egrep "^#define"`

    if test "X$TMP1" != "X"

    then

      TMP1=`echo "$TMP1" | sed 's/^#define[ 	]HASENVDC[ 	]"\([^"]*\)".*$/\1/'`

      echo "$TMP1"

    else

      echo "no current HASENVDC value"

    fi

    END=0

    GV=0

    while test $END -eq 0

    do

      echo ""

      echo $EO "Do you want to define a name for HASENVDC (y|n) [n]? $EC"

      read ANS EXCESS

      if test "X$ANS" = "Xn" -o "X$ANS" = "XN"

      then

        ENVV=""

        END=1

      else

        if test "X$ANS" = "Xy" -o "X$ANS" = "XY"

        then

	  GV=1

	  END=1

        else

	  if test "X$ANS" = "X"

	  then

	    echo ""

	    echo "HASENVDC will not be changed."

	    ENVV=$TMP1

	    END=1

	  else

	    echo ""

	    echo "Please answer y|n [n]."

	  fi

        fi

      fi

    done

    if test $GV -eq 1

    then

      echo ""

      echo $EO "Please enter the HASENVDC name (no quotes): $EC"

      read TMP1 EXCESS

      ENVV=`echo $TMP1 | sed 's/^\"//' | sed 's/\"$//'`

      if test "X$ENVV" = "X"

      then

	ENVN=1

      fi

    fi

    cat << .CAT_MARK

=====================================================================

HASPERSDC is a format that specifies how the personal device cache

path is constructed.  Consult the 00DCACHE and 00FAQ files of the

lsof distribution for information on the conversions supported in

HASPERSDC.  Press ENTER to use the curent HASPERSDC format:

.CAT_MARK

    echo $EO "        $EC"

    TMP1=`egrep "HASPERSDC$|HASPERSDC[ 	]" $OLD | tail $TA | egrep "^#define"`

    if test "X$TMP1" != "X"

    then

      TMP1=`echo "$TMP1" | sed 's/^#define[ 	]HASPERSDC[ 	]"\([^"]*\)".*$/\1/'`

      echo "$TMP1"

    else

      echo "no current HASPERSDC format"

    fi

    END=0

    GV=0

    while test $END -eq 0

    do

      echo ""

      echo $EO "Do you want to define a format for HASPERSDC (y|n) [n]? $EC"

      read ANS EXCESS

      if test "X$ANS" = "Xn" -o "X$ANS" = "XN"

      then

        END=1

      else

        if test "X$ANS" = "Xy" -o "X$ANS" = "XY"

        then

	  GV=1

	  END=1

        else

	  if test "X$ANS" = "X"

	  then

	    echo ""

	    echo "HASPERSDC will not be changed."

	    PDCV=$TMP1

	    END=1

	  else

	    echo ""

	    echo "Please answer y|n [n]."

	  fi

        fi

      fi

    done

    if test $GV -eq 1

    then

      echo ""

      echo $EO "Please enter the HASPERSDC format (no quotes): $EC"

      read TMP1 EXCESS

      PDCV=`echo $TMP1 | sed 's/^\"//' | sed 's/\"$//'`

      if test "X$PDCV" = "X"

      then

	PDCN=1

      fi

    fi

    cat << .CAT_MARK

=====================================================================

Specify for HASPERSDCPATH the name of the environment variable from

which lsof should take a path name component to insert at the %p

conversion in the HASPERSDC format.

Consult the 00FAQ and 00DCACHE files of the lsof distribution for

more information on HASPERSDCPATH usage.

Press ENTER to use the current value for HASPERSDCPATH:

.CAT_MARK

    echo $EO "        $EC"

    TMP1=`grep HASPERSDCPATH $OLD | tail $TA | egrep "^#define"`

    if test "X$TMP1" != "X"

    then

      TMP1=`echo "$TMP1" | sed 's/^#define[ 	]HASPERSDCPATH[ 	]"\([^"]*\)".*$/\1/'`

      echo "$TMP1"

    else

      echo "no current HASPERSDCPATH value"

    fi

    END=0

    GV=0

    while test $END -eq 0

    do

      echo ""

      echo $EO "Do you want to change HASPERSDCPATH (y|n) [n]? $EC"

      read ANS EXCESS

      if test "X$ANS" = "Xn" -o "X$ANS" = "XN" -o "X$ANS" = "X"

      then

	echo ""

	echo "HASPERSDCPATH will not be changed."

	PDCPV=$TMP1

        END=1

      else

        if test "X$ANS" = "Xy" -o "X$ANS" = "XY"

        then

	  GV=1

	  END=1

	else

	  echo ""

	  echo "Please answer y|n [n]."

	fi

      fi

    done

    if test $GV -eq 1

    then

      echo ""

      echo $EO "Please enter the HASPERSDCPATH name (no quotes): $EC"

      read TMP1 EXCESS

      PDCPV=`echo $TMP1 | sed 's/^\"//' | sed 's/\"$//'`

      if test "X$PDCPV" = "X"

      then

	PDCPN=1

      fi

    fi

    cat << .CAT_MARK

=====================================================================

Specify for HASSYSDC the system-wide device cache file path.  Press

ENTER to use the current HASSYSDC value:

.CAT_MARK

    echo $EO "        $EC"

    TMP1=`grep HASSYSDC $OLD | tail $TA | egrep "^#define"`

    if test "X$TMP1" != "X"

    then

      TMP1=`echo "$TMP1" | sed 's/^#define[ 	]HASSYSDC[ 	]"\([^"]*\)".*$/\1/'`

      echo "$TMP1"

    else

      echo "no current HASSYSDC value"

    fi

    END=0

    GV=0

    while test $END -eq 0

    do

      echo ""

      echo $EO "Do you want to define a system-device path (y|n) [n]? $EC"

      read ANS EXCESS

      if test "X$ANS" = "Xn" -o "X$ANS" = "XN"

      then

        END=1

      else

        if test "X$ANS" = "Xy" -o "X$ANS" = "XY"

        then

	  GV=1

	  END=1

        else

	  if test "X$ANS" = "X"

	  then

	    echo ""

	    echo "No HASSYSDC change will be made."

	    SDCV=$TMP1

	    END=1

	  else

	    echo ""

	    echo "Please answer y|n [n]."

	  fi

        fi

      fi

    done

    if test $GV -eq 1

    then

      echo ""

      echo $EO "Please enter the system-wide path (no quotes): $EC"

      read TMP1 EXCESS

      SDCV=`echo $TMP1 | sed 's/^\"//' | sed 's/\"$//'`

      if test "X$SDCV" = "X"

      then

	SDCN=1

      fi

    fi

  fi

fi

# If HASXOPT is defined, and HASXOPT_ROOT is mentioned,

# ask about changing HASXOPT_ROOT.

HXRC=0

grep HASXOPT $OLD | tail $TA | egrep "^#define" > /dev/null

if test $? -eq 0

then

  grep HASXOPT_ROOT $OLD > /dev/null

  if test $? -eq 0

  then

    cat << .CAT_MARK

=====================================================================

HASXOPT is defined.  If the dialect for which you are customizing

appears in the following list, you may want to change the definition

of HASXOPT_ROOT to restrict the use of the X option to lsof processes

whose real user ID is root, or enable use of it by all user IDs.

  AIX           the -X option enables the risky operation of letting

		lsof read library entry structures with readx().

		If HASXOPT_ROOT is defined, only processes whose

		real user ID is root will be allowed to use -X.

		If HASXOPT_ROOT is undefined, any process will be

		allowed to use -X.  Consult the 00FAQ file of the

		lsof distribution for more information on why

		readx() may be risky.

.CAT_MARK

    grep HASXOPT_ROOT $OLD | tail $TA | egrep "^#define" > /dev/null

    if test $? -eq 0

    then

      echo "HASXOPT_ROOT is defined."

      HXR="undefine"

      HXRS=1

    else

      echo "HASXOPT_ROOT is not defined."

      HXR="define"

      HXRS=0

    fi

    END=0

    while test $END -eq 0

    do

      echo ""

      echo $EO "Do you want to $HXR HASXOPT_ROOT (y|n) [n]? $EC"

      read ANS EXCESS

      if test "X$ANS" = "Xy" -o "X$ANS" = "XY"

      then

        HXRA=1

        END=1

      else

        if test "X$ANS" = "Xn" -o "X$ANS" = "XN" -o "X$ANS" = "X"

        then

	  echo ""

	  echo "HASXOPT_ROOT will not be changed."

          HXRA=0

          END=1

        else

          echo ""

          echo "Please answer y|n [n]."

        fi

      fi

    done