Mercurial > vim
view runtime/indent/tex.vim @ 33776:9503dc55b5ed v9.0.2108
patch 9.0.2108: [security]: overflow with count for :s command
Commit: https://github.com/vim/vim/commit/ac63787734fda2e294e477af52b3bd601517fa78
Author: Christian Brabandt <cb@256bit.org>
Date: Tue Nov 14 20:45:48 2023 +0100
patch 9.0.2108: [security]: overflow with count for :s command
Problem: [security]: overflow with count for :s command
Solution: Abort the :s command if the count is too large
If the count after the :s command is larger than what fits into a
(signed) long variable, abort with e_value_too_large.
Adds a test with INT_MAX as count and verify it correctly fails.
It seems the return value on Windows using mingw compiler wraps around,
so the initial test using :s/./b/9999999999999999999999999990 doesn't
fail there, since the count is wrapping around several times and finally
is no longer larger than 2147483647. So let's just use 2147483647 in the
test, which hopefully will always cause a failure
Signed-off-by: Christian Brabandt <cb@256bit.org>
author | Christian Brabandt <cb@256bit.org> |
---|---|
date | Thu, 16 Nov 2023 22:15:10 +0100 |
parents | 5c220cf30f1f |
children |
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" Vim indent file " Language: LaTeX " Maintainer: Yichao Zhou <broken.zhou AT gmail.com> " Created: Sat, 16 Feb 2002 16:50:19 +0100 " Version: 1.0.0 " Please email me if you found something I can do. Comments, bug report and " feature request are welcome. " Last Update: {{{ " 25th Sep 2002, by LH : " (*) better support for the option " (*) use some regex instead of several '||'. " Oct 9th, 2003, by JT: " (*) don't change indentation of lines starting with '%' " 2005/06/15, Moshe Kaminsky <kaminsky AT math.huji.ac.il> " (*) New variables: " g:tex_items, g:tex_itemize_env, g:tex_noindent_env " 2011/3/6, by Yichao Zhou <broken.zhou AT gmail.com> " (*) Don't change indentation of lines starting with '%' " I don't see any code with '%' and it doesn't work properly " so I add some code. " (*) New features: Add smartindent-like indent for "{}" and "[]". " (*) New variables: g:tex_indent_brace " 2011/9/25, by Yichao Zhou <broken.zhou AT gmail.com> " (*) Bug fix: smartindent-like indent for "[]" " (*) New features: Align with "&". " (*) New variable: g:tex_indent_and. " 2011/10/23 by Yichao Zhou <broken.zhou AT gmail.com> " (*) Bug fix: improve the smartindent-like indent for "{}" and " "[]". " 2012/02/27 by Yichao Zhou <broken.zhou AT gmail.com> " (*) Bug fix: support default folding marker. " (*) Indent with "&" is not very handy. Make it not enable by " default. " 2012/03/06 by Yichao Zhou <broken.zhou AT gmail.com> " (*) Modify "&" behavior and make it default again. Now "&" " won't align when there are more then one "&" in the previous " line. " (*) Add indent "\left(" and "\right)" " (*) Trust user when in "verbatim" and "lstlisting" " 2012/03/11 by Yichao Zhou <broken.zhou AT gmail.com> " (*) Modify "&" so that only indent when current line start with " "&". " 2012/03/12 by Yichao Zhou <broken.zhou AT gmail.com> " (*) Modify indentkeys. " 2012/03/18 by Yichao Zhou <broken.zhou AT gmail.com> " (*) Add &cpo " 2013/05/02 by Yichao Zhou <broken.zhou AT gmail.com> " (*) Fix problem about GetTeXIndent checker. Thank Albert Netymk " for reporting this. " 2014/06/23 by Yichao Zhou <broken.zhou AT gmail.com> " (*) Remove the feature g:tex_indent_and because it is buggy. " (*) If there is not any obvious indentation hints, we do not " alert our user's current indentation. " (*) g:tex_indent_brace now only works if the open brace is the " last character of that line. " 2014/08/03 by Yichao Zhou <broken.zhou AT gmail.com> " (*) Indent current line if last line has larger indentation " 2016/11/08 by Yichao Zhou <broken.zhou AT gmail.com> " (*) Fix problems for \[ and \]. Thanks Bruno for reporting. " 2017/04/30 by Yichao Zhou <broken.zhou AT gmail.com> " (*) Fix a bug between g:tex_noindent_env and g:tex_indent_items " Now g:tex_noindent_env='document\|verbatim\|itemize' (Emacs " style) is supported. Thanks Miles Wheeler for reporting. " 2018/02/07 by Yichao Zhou <broken.zhou AT gmail.com> " (*) Make indentation more smart in the normal mode " 2020/04/26 by Yichao Zhou <broken.zhou AT gmail.com> " (*) Fix a bug related to \[ & \]. Thanks Manuel Boni for " reporting. " 2023/08/28 by Vim Project " (*) Set b:undo_indent. " }}} " Document: {{{ " " For proper latex experience, please put " let g:tex_flavor = "latex" " into your vimrc. " " * g:tex_indent_brace " " If this variable is unset or non-zero, it will use smartindent-like style " for "{}" and "[]". Now this only works if the open brace is the last " character of that line. " " % Example 1 " \usetikzlibrary{ " external " } " " % Example 2 " \tikzexternalize[ " prefix=tikz] " " * g:tex_indent_items " " If this variable is set, item-environments are indented like Emacs does " it, i.e., continuation lines are indented with a shiftwidth. " " set unset " ------------------------------------------------------ " \begin{itemize} \begin{itemize} " \item blablabla \item blablabla " bla bla bla bla bla bla " \item blablabla \item blablabla " bla bla bla bla bla bla " \end{itemize} \end{itemize} " " " * g:tex_items " " A list of tokens to be considered as commands for the beginning of an item " command. The tokens should be separated with '\|'. The initial '\' should " be escaped. The default is '\\bibitem\|\\item'. " " * g:tex_itemize_env " " A list of environment names, separated with '\|', where the items (item " commands matching g:tex_items) may appear. The default is " 'itemize\|description\|enumerate\|thebibliography'. " " * g:tex_noindent_env " " A list of environment names. separated with '\|', where no indentation is " required. The default is 'document\|verbatim'. " }}} " Only define the function once if exists("b:did_indent") finish endif let s:cpo_save = &cpo set cpo&vim " Define global variable {{{ let b:did_indent = 1 if !exists("g:tex_indent_items") let g:tex_indent_items = 1 endif if !exists("g:tex_indent_brace") let g:tex_indent_brace = 1 endif if !exists("g:tex_max_scan_line") let g:tex_max_scan_line = 60 endif if g:tex_indent_items if !exists("g:tex_itemize_env") let g:tex_itemize_env = 'itemize\|description\|enumerate\|thebibliography' endif if !exists('g:tex_items') let g:tex_items = '\\bibitem\|\\item' endif else let g:tex_items = '' endif if !exists("g:tex_noindent_env") let g:tex_noindent_env = 'document\|verbatim\|lstlisting' endif "}}} " VIM Setting " {{{ setlocal autoindent setlocal nosmartindent setlocal indentexpr=GetTeXIndent() setlocal indentkeys& exec 'setlocal indentkeys+=[,(,{,),},],\&' . substitute(g:tex_items, '^\|\(\\|\)', ',=', 'g') let g:tex_items = '^\s*' . substitute(g:tex_items, '^\(\^\\s\*\)*', '', '') let b:undo_indent = "setlocal autoindent< indentexpr< indentkeys< smartindent<" " }}} function! GetTeXIndent() " {{{ " Find a non-blank line above the current line. let lnum = prevnonblank(v:lnum - 1) let cnum = v:lnum " Comment line is not what we need. while lnum != 0 && getline(lnum) =~ '^\s*%' let lnum = prevnonblank(lnum - 1) endwhile " At the start of the file use zero indent. if lnum == 0 return 0 endif let line = substitute(getline(lnum), '\s*%.*', '','g') " last line let cline = substitute(getline(v:lnum), '\s*%.*', '', 'g') " current line let ccol = 1 while cline[ccol] =~ '\s' let ccol += 1 endwhile " We are in verbatim, so do what our user what. if synIDattr(synID(v:lnum, ccol, 1), "name") == "texZone" if empty(cline) return indent(lnum) else return indent(v:lnum) endif endif if lnum == 0 return 0 endif let ind = indent(lnum) let stay = 1 " New code for comment: retain the indent of current line if cline =~ '^\s*%' return indent(v:lnum) endif " Add a 'shiftwidth' after beginning of environments. " Don't add it for \begin{document} and \begin{verbatim} " if line =~ '^\s*\\begin{\(.*\)}' && line !~ 'verbatim' " LH modification : \begin does not always start a line " ZYC modification : \end after \begin won't cause wrong indent anymore if line =~ '\\begin{.*}' if line !~ g:tex_noindent_env let ind = ind + shiftwidth() let stay = 0 endif if g:tex_indent_items " Add another sw for item-environments if line =~ g:tex_itemize_env let ind = ind + shiftwidth() let stay = 0 endif endif endif if cline =~ '\\end{.*}' let retn = s:GetEndIndentation(v:lnum) if retn != -1 return retn endif end " Subtract a 'shiftwidth' when an environment ends if cline =~ '\\end{.*}' \ && cline !~ g:tex_noindent_env \ && cline !~ '\\begin{.*}.*\\end{.*}' if g:tex_indent_items " Remove another sw for item-environments if cline =~ g:tex_itemize_env let ind = ind - shiftwidth() let stay = 0 endif endif let ind = ind - shiftwidth() let stay = 0 endif if g:tex_indent_brace if line =~ '[[{]$' let ind += shiftwidth() let stay = 0 endif if cline =~ '^\s*\\\?[\]}]' && s:CheckPairedIsLastCharacter(v:lnum, ccol) let ind -= shiftwidth() let stay = 0 endif if line !~ '^\s*\\\?[\]}]' for i in range(1, strlen(line)-1) let char = line[i] if char == ']' || char == '}' if s:CheckPairedIsLastCharacter(lnum, i) let ind -= shiftwidth() let stay = 0 endif endif endfor endif endif " Special treatment for 'item' " ---------------------------- if g:tex_indent_items " '\item' or '\bibitem' itself: if cline =~ g:tex_items let ind = ind - shiftwidth() let stay = 0 endif " lines following to '\item' are indented once again: if line =~ g:tex_items let ind = ind + shiftwidth() let stay = 0 endif endif if stay && mode() == 'i' " If there is no obvious indentation hint, and indentation is triggered " in insert mode, we trust our user. if empty(cline) return ind else return max([indent(v:lnum), s:GetLastBeginIndentation(v:lnum)]) endif else return ind endif endfunction "}}} function! s:GetLastBeginIndentation(lnum) " {{{ let matchend = 1 for lnum in range(a:lnum-1, max([a:lnum - g:tex_max_scan_line, 1]), -1) let line = getline(lnum) if line =~ '\\end{.*}' let matchend += 1 endif if line =~ '\\begin{.*}' let matchend -= 1 endif if matchend == 0 if line =~ g:tex_noindent_env return indent(lnum) endif if line =~ g:tex_itemize_env return indent(lnum) + 2 * shiftwidth() endif return indent(lnum) + shiftwidth() endif endfor return -1 endfunction function! s:GetEndIndentation(lnum) " {{{ if getline(a:lnum) =~ '\\begin{.*}.*\\end{.*}' return -1 endif let min_indent = 100 let matchend = 1 for lnum in range(a:lnum-1, max([a:lnum-g:tex_max_scan_line, 1]), -1) let line = getline(lnum) if line =~ '\\end{.*}' let matchend += 1 endif if line =~ '\\begin{.*}' let matchend -= 1 endif if matchend == 0 return indent(lnum) endif if !empty(line) let min_indent = min([min_indent, indent(lnum)]) endif endfor return min_indent - shiftwidth() endfunction " Most of the code is from matchparen.vim function! s:CheckPairedIsLastCharacter(lnum, col) "{{{ let c_lnum = a:lnum let c_col = a:col+1 let line = getline(c_lnum) if line[c_col-1] == '\' let c_col = c_col + 1 endif let c = line[c_col-1] let plist = split(&matchpairs, '.\zs[:,]') let i = index(plist, c) if i < 0 return 0 endif " Figure out the arguments for searchpairpos(). if i % 2 == 0 let s_flags = 'nW' let c2 = plist[i + 1] else let s_flags = 'nbW' let c2 = c let c = plist[i - 1] endif if c == '[' let c = '\[' let c2 = '\]' endif " Find the match. When it was just before the cursor move it there for a " moment. let save_cursor = winsaveview() call cursor(c_lnum, c_col) " When not in a string or comment ignore matches inside them. " We match "escape" for special items, such as lispEscapeSpecial. let s_skip ='synIDattr(synID(line("."), col("."), 0), "name") ' . \ '=~? "string\\|character\\|singlequote\\|escape\\|comment"' execute 'if' s_skip '| let s_skip = 0 | endif' let stopline = max([0, c_lnum - g:tex_max_scan_line]) " Limit the search time to 300 msec to avoid a hang on very long lines. " This fails when a timeout is not supported. try let [m_lnum, m_col] = searchpairpos(c, '', c2, s_flags, s_skip, stopline, 100) catch /E118/ endtry call winrestview(save_cursor) if m_lnum > 0 let line = getline(m_lnum) return strlen(line) == m_col endif return 0 endfunction "}}} let &cpo = s:cpo_save unlet s:cpo_save " vim: set sw=4 textwidth=80: