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view src/installml.sh @ 33422:25d250a74bb6 v9.0.1969

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patch 9.0.1969: [security] buffer-overflow in trunc_string() Commit: https://github.com/vim/vim/commit/3bd7fa12e146c6051490d048a4acbfba974eeb04 Author: Christian Brabandt <cb@256bit.org> Date: Mon Oct 2 20:59:08 2023 +0200 patch 9.0.1969: [security] buffer-overflow in trunc_string() Problem: buffer-overflow in trunc_string() Solution: Add NULL at end of buffer Currently trunc_string() assumes that when the string is too long, buf[e-1] will always be writeable. But that assumption may not always be true. The condition currently looks like this else if (e + 3 < buflen) [...] else { // can't fit in the "...", just truncate it buf[e - 1] = NUL; } but this means, we may run into the last else clause with e still being larger than buflen. So a buffer overflow occurs. So instead of using `buf[e - 1]`, let's just always truncate at `buf[buflen - 1]` which should always be writable. Signed-off-by: Christian Brabandt <cb@256bit.org>
author Christian Brabandt <cb@256bit.org>
date Mon, 02 Oct 2023 21:30:04 +0200
parents 3f399c28e4af
children
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#! /bin/sh
# installml.sh --- install or uninstall manpage links for Vim
#
# arguments:
# 1  what: "install" or "uninstall"
# 2  also do GUI pages: "yes" or ""
# 3  target directory		     e.g., "/usr/local/man/it/man1"
# 4  vim exe name		     e.g., "vim"
# 5  vimdiff exe name		     e.g., "vimdiff"
# 6  evim exe name		     e.g., "evim"
# 7  ex exe name		     e.g., "ex"
# 8  view exe name		     e.g., "view"
# 9  rvim exe name		     e.g., "rvim"
# 10 rview exe name		     e.g., "rview"
# 11 gvim exe name		     e.g., "gvim"
# 12 gview exe name		     e.g., "gview"
# 13 rgvim exe name		     e.g., "rgvim"
# 14 rgview exe name		     e.g., "rgview"
# 15 gvimdiff exe name		     e.g., "gvimdiff"
# 16 eview exe name		     e.g., "eview"

errstatus=0

what=$1
gui=$2
destdir=$3
vimname=$4
vimdiffname=$5
evimname=$6
exname=$7
viewname=$8
rvimname=$9
# old shells don't understand ${10}
shift
rviewname=$9
shift
gvimname=$9
shift
gviewname=$9
shift
rgvimname=$9
shift
rgviewname=$9
shift
gvimdiffname=$9
shift
eviewname=$9

if test $what = "install" -a \( -f $destdir/$vimname.1 -o -f $destdir/$vimdiffname.1 -o -f $destdir/$eviewname.1 \); then
   if test ! -d $destdir; then
      echo creating $destdir
      /bin/sh install-sh -c -d $destdir
   fi

   # ex
   if test ! -f $destdir/$exname.1 -a -f $destdir/$vimname.1; then
      echo creating link $destdir/$exname.1
      cd $destdir; ln -s $vimname.1 $exname.1
   fi

   # view
   if test ! -f $destdir/$viewname.1 -a -f $destdir/$vimname.1; then
      echo creating link $destdir/$viewname.1
      cd $destdir; ln -s $vimname.1 $viewname.1
   fi

   # rvim
   if test ! -f $destdir/$rvimname.1 -a -f $destdir/$vimname.1; then
      echo creating link $destdir/$rvimname.1
      cd $destdir; ln -s $vimname.1 $rvimname.1
   fi

   # rview
   if test ! -f $destdir/$rviewname.1 -a -f $destdir/$vimname.1; then
      echo creating link $destdir/$rviewname.1
      cd $destdir; ln -s $vimname.1 $rviewname.1
   fi

   # GUI targets are optional
   if test "$gui" = "yes"; then
      # gvim
      if test ! -f $destdir/$gvimname.1 -a -f $destdir/$vimname.1; then
	 echo creating link $destdir/$gvimname.1
	 cd $destdir; ln -s $vimname.1 $gvimname.1
      fi

      # gview
      if test ! -f $destdir/$gviewname.1 -a -f $destdir/$vimname.1; then
	 echo creating link $destdir/$gviewname.1
	 cd $destdir; ln -s $vimname.1 $gviewname.1
      fi

      # rgvim
      if test ! -f $destdir/$rgvimname.1 -a -f $destdir/$vimname.1; then
	 echo creating link $destdir/$rgvimname.1
	 cd $destdir; ln -s $vimname.1 $rgvimname.1
      fi

      # rgview
      if test ! -f $destdir/$rgviewname.1 -a -f $destdir/$vimname.1; then
	 echo creating link $destdir/$rgviewname.1
	 cd $destdir; ln -s $vimname.1 $rgviewname.1
      fi

      # gvimdiff
      if test ! -f $destdir/$gvimdiffname.1 -a -f $destdir/$vimdiffname.1; then
	 echo creating link $destdir/$gvimdiffname.1
	 cd $destdir; ln -s $vimdiffname.1 $gvimdiffname.1
      fi

      # eview
      if test ! -f $destdir/$eviewname.1 -a -f $destdir/$evimname.1; then
	 echo creating link $destdir/$eviewname.1
	 cd $destdir; ln -s $evimname.1 $eviewname.1
      fi
   fi
fi

if test $what = "uninstall"; then
   echo Checking for Vim manual page links in $destdir...

   if test -L $destdir/$exname.1; then
      echo deleting $destdir/$exname.1
      rm -f $destdir/$exname.1
   fi
   if test -L $destdir/$viewname.1; then
      echo deleting $destdir/$viewname.1
      rm -f $destdir/$viewname.1
   fi
   if test -L $destdir/$rvimname.1; then
      echo deleting $destdir/$rvimname.1
      rm -f $destdir/$rvimname.1
   fi
   if test -L $destdir/$rviewname.1; then
      echo deleting $destdir/$rviewname.1
      rm -f $destdir/$rviewname.1
   fi

   # GUI targets are optional
   if test "$gui" = "yes"; then
      if test -L $destdir/$gvimname.1; then
	 echo deleting $destdir/$gvimname.1
	 rm -f $destdir/$gvimname.1
      fi
      if test -L $destdir/$gviewname.1; then
	 echo deleting $destdir/$gviewname.1
	 rm -f $destdir/$gviewname.1
      fi
      if test -L $destdir/$rgvimname.1; then
	 echo deleting $destdir/$rgvimname.1
	 rm -f $destdir/$rgvimname.1
      fi
      if test -L $destdir/$rgviewname.1; then
	 echo deleting $destdir/$rgviewname.1
	 rm -f $destdir/$rgviewname.1
      fi
      if test -L $destdir/$gvimdiffname.1; then
	 echo deleting $destdir/$gvimdiffname.1
	 rm -f $destdir/$gvimdiffname.1
      fi
      if test -L $destdir/$eviewname.1; then
	 echo deleting $destdir/$eviewname.1
	 rm -f $destdir/$eviewname.1
      fi
   fi
fi

exit $errstatus

# vim: set sw=3 :