mirror of
https://github.com/mawww/kakoune.git
synced 2024-11-10 13:25:25 +03:00
rc modeline: Prevent command execution
This commit prevents specially crafted modelines from making the editor execute arbitrary Kakoune commands. By using a tabulation character as a separator, commands can be injected in the value of the options listed in the modeline. For example: # kak: tabstop=2;set-option buffer pwned yes Fixes #3735.
This commit is contained in:
parent
dbd7e4da79
commit
6976b1dce4
@ -12,6 +12,8 @@ declare-option -docstring "amount of lines that will be checked at the beginning
|
||||
|
||||
define-command -hidden modeline-parse-impl %{
|
||||
evaluate-commands %sh{
|
||||
kakquote() { printf "%s" "$*" | sed "s/'/''/g; 1s/^/'/; \$s/\$/'/"; }
|
||||
|
||||
# Translate a vim option into the corresponding kakoune one
|
||||
translate_opt_vim() {
|
||||
readonly key="$1"
|
||||
@ -19,11 +21,11 @@ define-command -hidden modeline-parse-impl %{
|
||||
tr=""
|
||||
|
||||
case "${key}" in
|
||||
so|scrolloff) tr="scrolloff ${value},${kak_opt_scrolloff##*,}";;
|
||||
siso|sidescrolloff) tr="scrolloff ${kak_opt_scrolloff%%,*},${value}";;
|
||||
ts|tabstop) tr="tabstop ${value}";;
|
||||
sw|shiftwidth) tr="indentwidth ${value}";;
|
||||
tw|textwidth) tr="autowrap_column ${value}";;
|
||||
so|scrolloff) tr=$(kakquote scrolloff "${value},${kak_opt_scrolloff##*,}");;
|
||||
siso|sidescrolloff) tr=$(kakquote scrolloff "${kak_opt_scrolloff%%,*},${value}");;
|
||||
ts|tabstop) tr=$(kakquote tabstop "${value}");;
|
||||
sw|shiftwidth) tr=$(kakquote indentwidth "${value}");;
|
||||
tw|textwidth) tr=$(kakquote autowrap_column "${value}");;
|
||||
ff|fileformat)
|
||||
case "${value}" in
|
||||
unix) tr="eolformat lf";;
|
||||
@ -31,10 +33,10 @@ define-command -hidden modeline-parse-impl %{
|
||||
*) printf %s\\n "echo -debug 'Unsupported file format: ${value}'";;
|
||||
esac
|
||||
;;
|
||||
ft|filetype) tr="filetype ${value}";;
|
||||
ft|filetype) tr=$(kakquote filetype "{value}");;
|
||||
bomb) tr="BOM utf8";;
|
||||
nobomb) tr="BOM none";;
|
||||
spelllang|spl) tr="spell_lang ${value%%,*}";;
|
||||
spelllang|spl) tr=$(kakquote spell_lang "{value%%,*}");;
|
||||
*) printf %s\\n "echo -debug 'Unsupported vim variable: ${key}'";;
|
||||
esac
|
||||
|
||||
@ -52,7 +54,7 @@ define-command -hidden modeline-parse-impl %{
|
||||
return;;
|
||||
esac
|
||||
|
||||
printf %s\\n "set-option buffer ${key} ${value}"
|
||||
printf 'set-option buffer %s' "$(kakquote "${key}" "${value}")"
|
||||
}
|
||||
|
||||
case "${kak_selection}" in
|
||||
|
Loading…
Reference in New Issue
Block a user