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ohmyzsh/themes/pygmalion-virtualenv.zsh-theme
Marc Cornellà b3ba9978cc
fix(themes): fix potential command injection in pygmalion, pygmalion-virtualenv and refined
The pygmalion and pygmalion-virtualenv themes unsafely handle git prompt information
which results in a double evaluation of this information, so a malicious git repository
could trigger a command injection if the user cloned and entered the repository.

A similar method could be used in the refined theme. All themes have been patched against this
vulnerability.
2021-11-11 22:45:40 +01:00

54 lines
1.8 KiB
Bash

# Yay! High voltage and arrows!
function _virtualenv_prompt_info {
if [[ -n "$(whence virtualenv_prompt_info)" ]]; then
if [ -n "$(whence pyenv_prompt_info)" ]; then
if [ "$1" = "inline" ]; then
ZSH_THEME_VIRTUAL_ENV_PROMPT_PREFIX=%{$fg[blue]%}"::%{$fg[red]%}"
ZSH_THEME_VIRTUAL_ENV_PROMPT_SUFFIX=""
virtualenv_prompt_info
fi
[ "$(pyenv_prompt_info)" = "${PYENV_PROMPT_DEFAULT_VERSION}" ] && virtualenv_prompt_info
else
virtualenv_prompt_info
fi
fi
}
prompt_setup_pygmalion(){
setopt localoptions extendedglob
ZSH_THEME_GIT_PROMPT_PREFIX="%{$reset_color%}%{$fg[green]%}"
ZSH_THEME_GIT_PROMPT_SUFFIX="%{$reset_color%} "
ZSH_THEME_GIT_PROMPT_DIRTY="%{$fg[yellow]%}⚡%{$reset_color%}"
ZSH_THEME_GIT_PROMPT_CLEAN=""
base_prompt='$(_virtualenv_prompt_info)%{$fg[magenta]%}%n%{$reset_color%}%{$fg[cyan]%}@%{$reset_color%}%{$fg[yellow]%}%m%{$reset_color%}%{$fg[red]%}:%{$reset_color%}%{$fg[cyan]%}%0~%{$reset_color%}%{$fg[red]%}|%{$reset_color%}'
post_prompt='%{$fg[cyan]%}⇒%{$reset_color%} '
base_prompt_nocolor=${base_prompt//\%\{[^\}]##\}}
post_prompt_nocolor=${post_prompt//\%\{[^\}]##\}}
autoload -U add-zsh-hook
add-zsh-hook precmd prompt_pygmalion_precmd
}
prompt_pygmalion_precmd(){
setopt localoptions nopromptsubst extendedglob
local gitinfo=$(git_prompt_info)
local gitinfo_nocolor=${gitinfo//\%\{[^\}]##\}}
local exp_nocolor="$(print -P \"${base_prompt_nocolor}${gitinfo_nocolor}${post_prompt_nocolor}\")"
local prompt_length=${#exp_nocolor}
# add new line on prompt longer than 40 characters
local nl=""
if [[ $prompt_length -gt 40 ]]; then
nl=$'\n%{\r%}'
fi
PROMPT="${base_prompt}\$(git_prompt_info)${nl}${post_prompt}"
}
prompt_setup_pygmalion