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annotate src/create_nvcmdidxs.c @ 34320:9d07f1036a69 v9.1.0094

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patch 9.1.0094: xxd: buffer-overflow when writing color output Commit: https://github.com/vim/vim/commit/00221487731ea1868c57259c7aa0eb713cd7ade7 Author: Goffredo Baroncelli <kreijack@inwind.it> Date: Sat Feb 10 13:31:06 2024 +0100 patch 9.1.0094: xxd: buffer-overflow when writing color output Problem: xxd: buffer-overflow when writing color output Solution: properly account for the color escape sequences and adjust LLEN macro (Goffredo Baroncelli) xxd: crash with higer number of column xxd writes the data into a buffer before printing. Unfortunately the buffer doesn't consider the space consumed by the escape sequences used to change the color of the character. BEFORE: $ xxd -Ralways -c 256 /etc/passwd Segmentation fault (core dumped) AFTER: $ ./xxd -Ralways -c 256 /etc/passwd 00000000: 726f 6f74 3a78 3a30 3a30 3a72 6f6f 743a 2f72 [...] To solve this issue I had to increase the size of the buffer considering for each byte of data 11 further characters for the color escape sequence. closes: #14003 Signed-off-by: Goffredo Baroncelli <kreijack@libero.it> Signed-off-by: Christian Brabandt <cb@256bit.org>
author Christian Brabandt <cb@256bit.org>
date Sat, 10 Feb 2024 13:45:03 +0100
parents ee1019e59bef
children
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1 /* vi:set ts=8 sts=4 sw=4 noet:
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2 *
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3 * VIM - Vi IMproved by Bram Moolenaar et al.
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4 *
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5 * Do ":help uganda" in Vim to read copying and usage conditions.
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6 * Do ":help credits" in Vim to see a list of people who contributed.
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7 * See README.txt for an overview of the Vim source code.
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8 */
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9
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10 /*
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11 * create_nvcmdidxs.c: helper program for `make nvcmdidxs`
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12 *
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13 * This outputs the list of command characters from the nv_cmds table in
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14 * decimal form, one per line.
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15 */
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16
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17 #include "vim.h"
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19 // Declare nv_cmds[].
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20 #include "nv_cmds.h"
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22 #include <stdio.h>
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23
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24 int main(void)
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25 {
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26 size_t i;
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27
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28 for (i = 0; i < NV_CMDS_SIZE; i++)
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29 {
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30 int cmdchar = nv_cmds[i];
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31
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32 // Special keys are negative, use the negated value for sorting.
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33 if (cmdchar < 0)
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34 cmdchar = -cmdchar;
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35 printf("%d\n", cmdchar);
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36 }
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37 return 0;
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38 }