brew-install-dublin-traceroute-with-setuid.sh

brew-install-dublin-traceroute-with-setuid.sh

#!/usr/bin/env bash

set -euo pipefail

# brew-install-dublin-traceroute--HEAD-with-root-setuid.sh
#

# Ask for sudo password here instead of after building dublin-traceroute, for convenience.
sudo -v

# In case homebrew version, 0.4.2, is already installed, uninstall it.
brew uninstall --force dublin-traceroute || true

# Fetch latest homebrew + formulas
brew update

# Requires libtins & jsoncpp. Install with 'brew install libtins jsoncpp'
brew install --HEAD nxmatic/repo/dublin-traceroute

symlink="$(which dublin-traceroute)"

# Changes need to be made to the target of homebrew's symlink, not the symlink
# These two lines don't work
# sudo chmod u+s "${symlink}"
# sudo chown root:wheel "${symlink}"

# Canonicalize the symlink target.
# Install coreutils if greadlink is missing with 'brew install coreutils'
target="$(greadlink -f "${symlink}")"

sudo chmod u+s "${target}"
sudo chown root:wheel "${target}"

# Try it out. Should be v0.5.0 or later.
dublin-traceroute --version