mirror of
https://github.com/ohmyzsh/ohmyzsh.git
synced 2026-05-22 04:51:12 +02:00
7d620c6577
OMZ_DIR is derived from user-controlled environment variables ($ZSH, $ZDOTDIR). If a value begins with -, rm/mv could interpret it as an option flag. Using -- terminates option parsing per POSIX. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
84 lines
2.8 KiB
Bash
84 lines
2.8 KiB
Bash
#!/bin/sh
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# Make sure important variables exist if not already defined
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#
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# $USER is defined by login(1) which is not always executed (e.g. containers)
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# POSIX: https://pubs.opengroup.org/onlinepubs/009695299/utilities/id.html
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USER=${USER:-$(id -u -n)}
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# $HOME is defined at the time of login, but it could be unset. If it is unset,
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# a tilde by itself (~) will not be expanded to the current user's home directory.
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# POSIX: https://pubs.opengroup.org/onlinepubs/009696899/basedefs/xbd_chap08.html#tag_08_03
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HOME="${HOME:-$(getent passwd "$USER" 2>/dev/null | cut -d: -f6)}"
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# macOS does not have getent; use dscl to query the directory service
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HOME="${HOME:-$(dscl . -read "/Users/$USER" NFSHomeDirectory 2>/dev/null | awk '{print $2}')}"
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# Last resort: tilde expansion via eval (POSIX, but carries injection risk)
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HOME="${HOME:-$(eval "echo ~$USER" 2>/dev/null)}"
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if [ -z "$HOME" ]; then
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echo >&2 "Error: could not determine HOME directory"
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exit 1
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fi
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zdot="${ZDOTDIR:-$HOME}"
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# Default OMZ directory (matches tools/install.sh logic)
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if [ -n "$ZDOTDIR" ] && [ "$ZDOTDIR" != "$HOME" ]; then
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OMZ_DIR="${ZSH:-$ZDOTDIR/ohmyzsh}"
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else
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OMZ_DIR="${ZSH:-$HOME/.oh-my-zsh}"
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fi
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# Safety: normalize and refuse to remove dangerous or non-OMZ paths
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# Strip all trailing slashes (e.g., "/home/user/" → "/home/user")
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OMZ_DIR=${OMZ_DIR%"${OMZ_DIR##*[!/]}"}
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case "${OMZ_DIR:-/}" in
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/|.|..|"$HOME"|"$zdot") echo >&2 "Error: refusing to remove '$OMZ_DIR' (unsafe path)"; exit 1 ;;
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esac
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if [ -d "$OMZ_DIR" ] && [ ! -f "$OMZ_DIR/oh-my-zsh.sh" ]; then
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echo >&2 "Error: '$OMZ_DIR' does not appear to be an Oh My Zsh installation"
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exit 1
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fi
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if hash chsh >/dev/null 2>&1 && [ -f "$zdot/.shell.pre-oh-my-zsh" ]; then
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old_shell=$(cat "$zdot/.shell.pre-oh-my-zsh")
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echo "Switching your shell back to '$old_shell':"
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if chsh -s "$old_shell"; then
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rm -f "$zdot/.shell.pre-oh-my-zsh"
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else
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echo "Could not change default shell. Change it manually by running chsh"
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echo "or editing the /etc/passwd file."
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exit 1
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fi
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fi
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printf "Are you sure you want to remove Oh My Zsh? [y/N] "
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read -r confirmation
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if [ "$confirmation" != y ] && [ "$confirmation" != Y ]; then
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echo "Uninstall cancelled"
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exit
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fi
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echo "Removing $OMZ_DIR"
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if [ -d "$OMZ_DIR" ]; then
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rm -rf -- "$OMZ_DIR"
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fi
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if [ -e "$zdot/.zshrc" ]; then
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ZSHRC_SAVE="$zdot/.zshrc.omz-uninstalled-$(date +%Y-%m-%d_%H-%M-%S)"
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echo "Found $zdot/.zshrc -- Renaming to ${ZSHRC_SAVE}"
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mv -- "$zdot/.zshrc" "${ZSHRC_SAVE}"
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fi
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echo "Looking for original zsh config..."
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ZSHRC_ORIG="$zdot/.zshrc.pre-oh-my-zsh"
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if [ -e "$ZSHRC_ORIG" ]; then
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echo "Found $ZSHRC_ORIG -- Restoring to $zdot/.zshrc"
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mv -- "$ZSHRC_ORIG" "$zdot/.zshrc"
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echo "Your original zsh config was restored."
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else
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echo "No original zsh config found"
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fi
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echo "Thanks for trying out Oh My Zsh. It's been uninstalled."
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echo "Don't forget to restart your terminal!"
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