Mercurial > vim
view runtime/indent/fortran.vim @ 33581:403d57b06231 v9.0.2035
patch 9.0.2035: [security] use-after-free with wildmenu
Commit: https://github.com/vim/vim/commit/8f4fb007e4d472b09ff6bed9ffa485e0c3093699
Author: Yee Cheng Chin <ychin.git@gmail.com>
Date: Tue Oct 17 10:06:56 2023 +0200
patch 9.0.2035: [security] use-after-free with wildmenu
Problem: [security] use-after-free with wildmenu
Solution: properly clean up the wildmenu when exiting
Fix wildchar/wildmenu/pum memory corruption with special wildchar's
Currently, using `wildchar=<Esc>` or `wildchar=<C-\>` can lead to a
memory corruption if using wildmenu+pum, or wrong states if only using
wildmenu. This is due to the code only using one single place inside the
cmdline process loop to perform wild menu clean up (by checking
`end_wildmenu`) but there are other odd situations where the loop could
have exited and we need a post-loop clean up just to be sure. If the
clean up was not done you would have a stale popup menu referring to
invalid memory, or if not using popup menu, incorrect status line (if
`laststatus=0`).
For example, if you hit `<Esc>` two times when it's wildchar, there's a
hard-coded behavior to exit command-line as a failsafe for user, and if
you hit `<C-\><C-\><C-N>` it will also exit command-line, but the clean
up code would not have hit because of specialized `<C-\>` handling.
Fix Ctrl-E / Ctrl-Y to not cancel/accept wildmenu if they are also
used for 'wildchar'/'wildcharm'. Currently they don't behave properly,
and also have potentially memory unsafe behavior as the logic is
currently not accounting for this situation and try to do both.
(Previous patch that addressed this: #11677)
Also, correctly document Escape key behavior (double-hit it to escape)
in wildchar docs as it's previously undocumented.
In addition, block known invalid chars to be set in `wildchar` option,
such as Ctrl-C and `<CR>`. This is just to make it clear to the user
they shouldn't be set, and is not required for this bug fix.
closes: #13361
Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: Yee Cheng Chin <ychin.git@gmail.com>
author | Christian Brabandt <cb@256bit.org> |
---|---|
date | Tue, 17 Oct 2023 10:15:08 +0200 |
parents | 57c9377b9c62 |
children | cf2ae76cbbf7 |
line wrap: on
line source
" Vim indent file " Language: Fortran 2008 (and older: Fortran 2003, 95, 90, and 77) " Version: (v49) 2022 May 14 " Maintainer: Ajit J. Thakkar <thakkar.ajit@gmail.com>; <http://www2.unb.ca/~ajit/> " Usage: For instructions, do :help fortran-indent from Vim " Credits: " Version 0.1 was created in September 2000 by Ajit Thakkar. " Since then, useful suggestions and contributions have been made, in order, by: " Albert Oliver Serra, Takuya Fujiwara, Philipp Edelmann, Eisuke Kawashima, " Louis Cochen, and Doug Kearns. " Only load this indent file when no other was loaded. if exists("b:did_indent") finish endif let b:did_indent = 1 let s:cposet=&cpoptions set cpoptions&vim let b:undo_indent = "setl inde< indk<" setlocal indentkeys+==~end,=~case,=~if,=~else,=~do,=~where,=~elsewhere,=~select setlocal indentkeys+==~endif,=~enddo,=~endwhere,=~endselect,=~elseif setlocal indentkeys+==~type,=~interface,=~forall,=~associate,=~block,=~enum setlocal indentkeys+==~endforall,=~endassociate,=~endblock,=~endenum if exists("b:fortran_indent_more") || exists("g:fortran_indent_more") setlocal indentkeys+==~function,=~subroutine,=~module,=~contains,=~program setlocal indentkeys+==~endfunction,=~endsubroutine,=~endmodule setlocal indentkeys+==~endprogram endif " Determine whether this is a fixed or free format source file " if this hasn't been done yet using the priority: " buffer-local value " > global value " > file extension as in Intel ifort, gcc (gfortran), NAG, Pathscale, and Cray compilers if !exists("b:fortran_fixed_source") if exists("fortran_free_source") " User guarantees free source form let b:fortran_fixed_source = 0 elseif exists("fortran_fixed_source") " User guarantees fixed source form let b:fortran_fixed_source = 1 elseif expand("%:e") =~? '^f\%(90\|95\|03\|08\)$' " Free-form file extension defaults as in Intel ifort, gcc(gfortran), NAG, Pathscale, and Cray compilers let b:fortran_fixed_source = 0 elseif expand("%:e") =~? '^\%(f\|f77\|for\)$' " Fixed-form file extension defaults let b:fortran_fixed_source = 1 else " Modern fortran still allows both fixed and free source form " Assume fixed source form unless signs of free source form " are detected in the first five columns of the first s:lmax lines. " Detection becomes more accurate and time-consuming if more lines " are checked. Increase the limit below if you keep lots of comments at " the very top of each file and you have a fast computer. let s:lmax = 500 if ( s:lmax > line("$") ) let s:lmax = line("$") endif let b:fortran_fixed_source = 1 let s:ln=1 while s:ln <= s:lmax let s:test = strpart(getline(s:ln),0,5) if s:test !~ '^[Cc*]' && s:test !~ '^ *[!#]' && s:test =~ '[^ 0-9\t]' && s:test !~ '^[ 0-9]*\t' let b:fortran_fixed_source = 0 break endif let s:ln = s:ln + 1 endwhile endif endif " Define the appropriate indent function but only once if (b:fortran_fixed_source == 1) setlocal indentexpr=FortranGetFixedIndent() if exists("*FortranGetFixedIndent") let &cpoptions = s:cposet unlet s:cposet finish endif else setlocal indentexpr=FortranGetFreeIndent() if exists("*FortranGetFreeIndent") let &cpoptions = s:cposet unlet s:cposet finish endif endif function FortranGetIndent(lnum) let ind = indent(a:lnum) let prevline=getline(a:lnum) " Strip tail comment let prevstat=substitute(prevline, '!.*$', '', '') let prev2line=getline(a:lnum-1) let prev2stat=substitute(prev2line, '!.*$', '', '') "Indent do loops only if they are all guaranteed to be of do/end do type if exists("b:fortran_do_enddo") || exists("g:fortran_do_enddo") if prevstat =~? '^\s*\(\d\+\s\)\=\s*\(\a\w*\s*:\)\=\s*do\>' let ind = ind + shiftwidth() endif if getline(v:lnum) =~? '^\s*\(\d\+\s\)\=\s*end\s*do\>' let ind = ind - shiftwidth() endif endif "Add a shiftwidth to statements following if, else, else if, case, class, "where, else where, forall, type, interface and associate statements if prevstat =~? '^\s*\(case\|class\|else\|else\s*if\|else\s*where\)\>' \ ||prevstat=~? '^\s*\(type\|interface\|associate\|enum\)\>' \ ||prevstat=~?'^\s*\(\d\+\s\)\=\s*\(\a\w*\s*:\)\=\s*\(forall\|where\|block\)\>' \ ||prevstat=~? '^\s*\(\d\+\s\)\=\s*\(\a\w*\s*:\)\=\s*if\>' let ind = ind + shiftwidth() " Remove unwanted indent after logical and arithmetic ifs if prevstat =~? '\<if\>' && prevstat !~? '\<then\>' let ind = ind - shiftwidth() endif " Remove unwanted indent after type( statements if prevstat =~? '^\s*type\s*(' let ind = ind - shiftwidth() endif endif "Indent program units unless instructed otherwise if !exists("b:fortran_indent_less") && !exists("g:fortran_indent_less") let prefix='\(\(pure\|impure\|elemental\|recursive\)\s\+\)\{,2}' let type='\(\(integer\|real\|double\s\+precision\|complex\|logical' \.'\|character\|type\|class\)\s*\S*\s\+\)\=' if prevstat =~? '^\s*\(contains\|submodule\|program\)\>' \ ||prevstat =~? '^\s*'.'module\>\(\s*\procedure\)\@!' \ ||prevstat =~? '^\s*'.prefix.'subroutine\>' \ ||prevstat =~? '^\s*'.prefix.type.'function\>' \ ||prevstat =~? '^\s*'.type.prefix.'function\>' let ind = ind + shiftwidth() endif if getline(v:lnum) =~? '^\s*contains\>' \ ||getline(v:lnum)=~? '^\s*end\s*' \ .'\(function\|subroutine\|module\|submodule\|program\)\>' let ind = ind - shiftwidth() endif endif "Subtract a shiftwidth from else, else if, elsewhere, case, class, end if, " end where, end select, end forall, end interface, end associate, " end enum, end type, end block and end type statements if getline(v:lnum) =~? '^\s*\(\d\+\s\)\=\s*' \. '\(else\|else\s*if\|else\s*where\|case\|class\|' \. 'end\s*\(if\|where\|select\|interface\|' \. 'type\|forall\|associate\|enum\|block\)\)\>' let ind = ind - shiftwidth() " Fix indent for case statement immediately after select if prevstat =~? '\<select\s*\(case\|type\)\>' let ind = ind + shiftwidth() endif endif "First continuation line if prevstat =~ '&\s*$' && prev2stat !~ '&\s*$' let ind = ind + shiftwidth() endif "Line after last continuation line if prevstat !~ '&\s*$' && prev2stat =~ '&\s*$' && prevstat !~? '\<then\>' let ind = ind - shiftwidth() endif return ind endfunction function FortranGetFreeIndent() "Find the previous non-blank line let lnum = prevnonblank(v:lnum - 1) "Use zero indent at the top of the file if lnum == 0 return 0 endif let ind=FortranGetIndent(lnum) return ind endfunction function FortranGetFixedIndent() let currline=getline(v:lnum) "Don't indent comments, continuation lines and labelled lines if strpart(currline,0,6) =~ '[^ \t]' let ind = indent(v:lnum) return ind endif "Find the previous line which is not blank, not a comment, "not a continuation line, and does not have a label let lnum = v:lnum - 1 while lnum > 0 let prevline=getline(lnum) if (prevline =~ "^[C*!]") || (prevline =~ "^\s*$") \ || (strpart(prevline,5,1) !~ "[ 0]") " Skip comments, blank lines and continuation lines let lnum = lnum - 1 else let test=strpart(prevline,0,5) if test =~ "[0-9]" " Skip lines with statement numbers let lnum = lnum - 1 else break endif endif endwhile "First line must begin at column 7 if lnum == 0 return 6 endif let ind=FortranGetIndent(lnum) return ind endfunction let &cpoptions = s:cposet unlet s:cposet " vim:sw=2 tw=130