Mercurial > vim
view src/testdir/test_retab.vim @ 35150:42f061099b39 v9.1.0404
patch 9.1.0404: [security] xxd: buffer-overflow with specific flags
Commit: https://github.com/vim/vim/commit/67797191e039196128c69ba1538ccaf2a4711323
Author: Lennard Hofmann <lennard.hofmann@web.de>
Date: Fri May 10 14:17:26 2024 +0200
patch 9.1.0404: [security] xxd: buffer-overflow with specific flags
Problem: [security] xxd: buffer-overflow with specific flags
Solution: Correctly calculate the required buffer space
(Lennard Hofmann)
xxd writes each output line into a global buffer before printing.
The maximum size of that buffer was not calculated correctly.
This command was crashing in AddressSanitizer:
$ xxd -Ralways -g1 -c256 -d -o 9223372036854775808 /etc/passwd
This prints a line of 6680 bytes but the buffer only had room for 6549 bytes.
If the output from "-b" was colored, the line could be even longer.
closes: #14738
Co-authored-by: K.Takata <kentkt@csc.jp>
Signed-off-by: Lennard Hofmann <lennard.hofmann@web.de>
Signed-off-by: Christian Brabandt <cb@256bit.org>
author | Christian Brabandt <cb@256bit.org> |
---|---|
date | Fri, 10 May 2024 14:45:03 +0200 |
parents | 6a6c56354cfc |
children |
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" Test :retab source check.vim func SetUp() new call setline(1, "\ta \t b c ") endfunc func TearDown() bwipe! endfunc func Retab(bang, n) let l:old_tabstop = &tabstop let l:old_line = getline(1) exe "retab" . a:bang . a:n let l:line = getline(1) call setline(1, l:old_line) if a:n > 0 " :retab changes 'tabstop' to n with argument n > 0. call assert_equal(a:n, &tabstop) exe 'set tabstop=' . l:old_tabstop else " :retab does not change 'tabstop' with empty or n <= 0. call assert_equal(l:old_tabstop, &tabstop) endif return l:line endfunc func Test_retab() set tabstop=8 noexpandtab call assert_equal("\ta\t b c ", Retab('', '')) call assert_equal("\ta\t b c ", Retab('', 0)) call assert_equal("\ta\t b c ", Retab('', 8)) call assert_equal("\ta\t b\t c\t ", Retab('!', '')) call assert_equal("\ta\t b\t c\t ", Retab('!', 0)) call assert_equal("\ta\t b\t c\t ", Retab('!', 8)) call assert_equal("\t\ta\t\t\tb c ", Retab('', 4)) call assert_equal("\t\ta\t\t\tb\t\t c\t ", Retab('!', 4)) call assert_equal(" a\t\tb c ", Retab('', 10)) call assert_equal(" a\t\tb c ", Retab('!', 10)) set tabstop=8 expandtab call assert_equal(" a b c ", Retab('', '')) call assert_equal(" a b c ", Retab('', 0)) call assert_equal(" a b c ", Retab('', 8)) call assert_equal(" a b c ", Retab('!', '')) call assert_equal(" a b c ", Retab('!', 0)) call assert_equal(" a b c ", Retab('!', 8)) call assert_equal(" a b c ", Retab(' ', 4)) call assert_equal(" a b c ", Retab('!', 4)) call assert_equal(" a b c ", Retab(' ', 10)) call assert_equal(" a b c ", Retab('!', 10)) set tabstop=4 noexpandtab call assert_equal("\ta\t\tb c ", Retab('', '')) call assert_equal("\ta\t\tb\t\t c\t ", Retab('!', '')) call assert_equal("\t a\t\t\tb c ", Retab('', 3)) call assert_equal("\t a\t\t\tb\t\t\tc\t ", Retab('!', 3)) call assert_equal(" a\t b c ", Retab('', 5)) call assert_equal(" a\t b\t\t c\t ", Retab('!', 5)) set tabstop=4 expandtab call assert_equal(" a b c ", Retab('', '')) call assert_equal(" a b c ", Retab('!', '')) call assert_equal(" a b c ", Retab('', 3)) call assert_equal(" a b c ", Retab('!', 3)) call assert_equal(" a b c ", Retab('', 5)) call assert_equal(" a b c ", Retab('!', 5)) set tabstop& expandtab& endfunc func Test_retab_error() call assert_fails('retab -1', 'E487:') call assert_fails('retab! -1', 'E487:') call assert_fails('ret -1000', 'E487:') call assert_fails('ret 10000', 'E475:') call assert_fails('ret 80000000000000000000', 'E475:') endfunc func RetabLoop() while 1 set ts=4000 retab 4 endwhile endfunc func Test_retab_endless() " inside try/catch we can catch the error message call setline(1, "\t0\t") let caught = 'no' try call RetabLoop() catch /E1240:/ let caught = v:exception endtry call assert_match('E1240:', caught) set tabstop& endfunc func Test_nocatch_retab_endless() " when not inside try/catch an interrupt is generated to get out of loops call setline(1, "\t0\t") call assert_fails('call RetabLoop()', ['E1240:', 'Interrupted']) set tabstop& endfunc " vim: shiftwidth=2 sts=2 expandtab