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5cd3380d9d
Escape all $ except the first $. Escape all backtick `'s. This prevents variable names or shell expansions placed as branch names from remotely exploiting code. Fixes issue #1267 for sorin prompt.
154 lines
4.8 KiB
Plaintext
154 lines
4.8 KiB
Plaintext
#
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# A simple theme that displays relevant, contextual information.
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#
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# Authors:
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# Sorin Ionescu <sorin.ionescu@gmail.com>
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#
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# Screenshots:
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# http://i.imgur.com/nrGV6pg.png
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#
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#
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# 16 Terminal Colors
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# -- ---------------
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# 0 black
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# 1 red
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# 2 green
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# 3 yellow
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# 4 blue
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# 5 magenta
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# 6 cyan
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# 7 white
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# 8 bright black
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# 9 bright red
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# 10 bright green
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# 11 bright yellow
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# 12 bright blue
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# 13 bright magenta
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# 14 bright cyan
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# 15 bright white
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#
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# Load dependencies.
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pmodload 'helper'
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prompt_sorin_git_info() {
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if (( _prompt_sorin_precmd_async_pid > 0 )); then
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# Append Git status.
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if [[ -s "$_prompt_sorin_precmd_async_data" ]]; then
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alias typeset='typeset -g'
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source "$_prompt_sorin_precmd_async_data"
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RPROMPT+='${git_info:+${(e)git_info[status]}}'
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unalias typeset
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fi
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# Reset PID.
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_prompt_sorin_precmd_async_pid=0
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# Redisplay prompt.
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zle && zle reset-prompt
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fi
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}
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function prompt_sorin_precmd_async {
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# Get Git repository information.
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if (( $+functions[git-info] )); then
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git-info
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### TODO XXX
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# This section exists to patch over vulnerabilities when sourcing the
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# file in $_prompt_sorin_precmd_async_data. Without it if a branch is named
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# $foo it will expand if we have a $foo variable, and a branch named
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# $(IFS=_;cmd=rm_-rf_~;$cmd) could delete the users home directory.
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# This is a stopgap to prevent code execution and fix the vulnerability,
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# but it eventually needs to be removed in favor of zsh_async and not using
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# a file to store the prompt data in.
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###
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local tmp_prompt_var=$(typeset -p git_info)
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# Replace all $ with $\ to escape
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tmp_prompt_var=${tmp_prompt_var//\$/\\$}
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# Unescape the first \$ as it's our $( )
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tmp_prompt_var=${tmp_prompt_var:s/\\$/\$}
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# Escape all backticks ` to \`
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tmp_prompt_var=${tmp_prompt_var//\`/\\\`}
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printf "%s\n" "$tmp_prompt_var" >! "$_prompt_sorin_precmd_async_data"
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fi
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# Signal completion to parent process.
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kill -WINCH $$
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}
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function prompt_sorin_precmd {
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setopt LOCAL_OPTIONS
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unsetopt XTRACE KSH_ARRAYS
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# Format PWD.
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_prompt_sorin_pwd=$(promptpwd)
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# Define prompts.
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RPROMPT='${editor_info[overwrite]}%(?:: %F{1}⏎%f)${VIM:+" %B%F{6}V%f%b"}'
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# Kill the old process of slow commands if it is still running.
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if (( _prompt_sorin_precmd_async_pid > 0 )); then
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kill -KILL "$_prompt_sorin_precmd_async_pid" &>/dev/null
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fi
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# Compute slow commands in the background.
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trap prompt_sorin_git_info WINCH
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prompt_sorin_precmd_async &!
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_prompt_sorin_precmd_async_pid=$!
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}
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function prompt_sorin_setup {
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setopt LOCAL_OPTIONS
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unsetopt XTRACE KSH_ARRAYS
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prompt_opts=(cr percent subst)
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_prompt_sorin_precmd_async_pid=0
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_prompt_sorin_precmd_async_data=$(mktemp "${TMPDIR:-/tmp}/sorin-prompt-async-XXXXXXXXXX")
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# Load required functions.
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autoload -Uz add-zsh-hook
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# Add hook for calling git-info before each command.
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add-zsh-hook precmd prompt_sorin_precmd
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# Set editor-info parameters.
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zstyle ':prezto:module:editor:info:completing' format '%B%F{7}...%f%b'
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zstyle ':prezto:module:editor:info:keymap:primary' format ' %B%F{1}❯%F{3}❯%F{2}❯%f%b'
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zstyle ':prezto:module:editor:info:keymap:primary:overwrite' format ' %F{3}♺%f'
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zstyle ':prezto:module:editor:info:keymap:alternate' format ' %B%F{2}❮%F{3}❮%F{1}❮%f%b'
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# Set git-info parameters.
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zstyle ':prezto:module:git:info' verbose 'yes'
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zstyle ':prezto:module:git:info:action' format '%F{7}:%f%%B%F{9}%s%f%%b'
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zstyle ':prezto:module:git:info:added' format ' %%B%F{2}✚%f%%b'
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zstyle ':prezto:module:git:info:ahead' format ' %%B%F{13}⬆%f%%b'
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zstyle ':prezto:module:git:info:behind' format ' %%B%F{13}⬇%f%%b'
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zstyle ':prezto:module:git:info:branch' format ' %%B%F{2}%b%f%%b'
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zstyle ':prezto:module:git:info:commit' format ' %%B%F{3}%.7c%f%%b'
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zstyle ':prezto:module:git:info:deleted' format ' %%B%F{1}✖%f%%b'
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zstyle ':prezto:module:git:info:modified' format ' %%B%F{4}✱%f%%b'
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zstyle ':prezto:module:git:info:position' format ' %%B%F{13}%p%f%%b'
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zstyle ':prezto:module:git:info:renamed' format ' %%B%F{5}➜%f%%b'
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zstyle ':prezto:module:git:info:stashed' format ' %%B%F{6}✭%f%%b'
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zstyle ':prezto:module:git:info:unmerged' format ' %%B%F{3}═%f%%b'
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zstyle ':prezto:module:git:info:untracked' format ' %%B%F{7}◼%f%%b'
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zstyle ':prezto:module:git:info:keys' format \
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'status' '$(coalesce "%b" "%p" "%c")%s%A%B%S%a%d%m%r%U%u'
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# Define prompts.
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PROMPT='${SSH_TTY:+"%F{9}%n%f%F{7}@%f%F{3}%m%f "}%F{4}${_prompt_sorin_pwd}%(!. %B%F{1}#%f%b.)${editor_info[keymap]} '
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RPROMPT=''
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SPROMPT='zsh: correct %F{1}%R%f to %F{2}%r%f [nyae]? '
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}
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function prompt_sorin_preview {
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local +h PROMPT=''
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local +h RPROMPT=''
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local +h SPROMPT=''
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editor-info 2>/dev/null
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prompt_preview_theme 'sorin'
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}
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prompt_sorin_setup "$@"
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