#!/usr/bin/env sh
# Setup development environment on BSD-like platforms.
#
# Tested on: FreeBSD, OpenBSD, NetBSD.
#
# Wireshark - Network traffic analyzer
# By Gerald Combs <gerald@wireshark.org>
# Copyright 1998 Gerald Combs
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
# We drag in tools that might not be needed by all users; it's easier
# that way.
#
# We do not use Bash as the shell for this script, and use the POSIX
# syntax for function definition rather than the
# "function <name>() { ... }" syntax, as FreeBSD 13, at least, does
# not have Bash, and its /bin/sh doesn't support the other syntax.
#

print_usage() {
	printf "\\nUtility to setup a bsd-based system for Wireshark Development.\\n"
	printf "The basic usage installs the needed software\\n\\n"
	printf "Usage: %s [--install-optional] [...other options...]\\n" "$0"
	printf "\\t--install-optional: install optional software as well\\n"
	printf "\\t[other]: other options are passed as-is to pkg manager.\\n"
}

ADDITIONAL=0
OPTIONS=
for arg; do
	case $arg in
		--help)
			print_usage
			exit 0
			;;
		--install-optional)
			ADDITIONAL=1
			;;
		*)
			OPTIONS="$OPTIONS $arg"
			;;
	esac
done

# Check if the user is root
if [ "$(id -u)" -ne 0 ]
then
	echo "You must be root."
	exit 1
fi

BASIC_LIST="\
	cmake \
	qt6 \
	git \
	pcre2 \
	speexdsp"

ADDITIONAL_LIST="\
	gettext-tools \
	snappy \
	bcg729 \
	libssh \
	libmaxminddb \
	libsmi \
	brotli \
	zstd \
	"

# Uncomment to add PNG compression utilities used by compress-pngs:
# ADDITIONAL_LIST="$ADDITIONAL_LIST \
#	advancecomp \
#	optipng \
#	pngcrush"

# Guess which package manager we will use
PM=$( which pkgin 2> /dev/null || which pkg 2> /dev/null || which pkg_add 2> /dev/null )

case $PM in
	*/pkgin)
		PM_OPTIONS="install"
		PM_SEARCH="pkgin search"
		PM_MUST_GLOB=no
		;;
	*/pkg)
		PM_OPTIONS="install"
		PM_SEARCH="pkg search"
		PM_MUST_GLOB=yes
		;;
	*/pkg_add)
		PM_OPTIONS=""
		PM_SEARCH="pkg_info"
		PM_MUST_GLOB=no
		;;
esac


echo "Using $PM ($PM_SEARCH)"

# Adds package $2 to list variable $1 if the package is found
add_package() {
	# shellcheck disable=SC3043
	local list="$1" pkgname="$2"

	# fail if the package is not known
	if [ "$PM_MUST_GLOB" = yes ]
	then
		#
		# We need to do a glob search, with a "*" at the
		# end, so we only find packages that *begin* with
		# the name; otherwise, searching for pkg-config
		# could find packages that *don't* begin with
		# pkg-config, but have it later in the name
		# (FreeBSD 11 has one such package), so when
		# we then try to install it, that fails.  Doing
		# an *exact* search fails, as that requires that
		# the package name include the version number.
		#
		$PM_SEARCH -g "$pkgname*" > /dev/null 2>&1 || return 1
	else
		$PM_SEARCH "$pkgname" > /dev/null 2>&1 || return 1
	fi

	# package is found, append it to list
	eval "${list}=\"\${${list}} \${pkgname}\""
}

# pkg-config: NetBSD
# pkgconf: FreeBSD
add_package BASIC_LIST pkg-config ||
add_package BASIC_LIST pkgconf ||
echo "pkg-config is unavailable"

# c-ares: FreeBSD
# libcares: OpenBSD
add_package BASIC_LIST c-ares ||
add_package BASIC_LIST libcares ||
echo "c-ares is unavailable"

# rubygem-asciidoctor: FreeBSD
add_package ADDITIONAL_LIST rubygem-asciidoctor ||
echo "asciidoctor is unavailable"

# liblz4: FreeBSD
# lz4: NetBSD
add_package ADDITIONAL_LIST liblz4 ||
add_package ADDITIONAL_LIST lz4 ||
echo "lz4 is unavailable"

# libnghttp2: FreeBSD
# nghttp2: NetBSD
add_package ADDITIONAL_LIST libnghttp2 ||
add_package ADDITIONAL_LIST nghttp2 ||
echo "nghttp2 is unavailable"

# libnghttp3: FreeBSD
# nghttp3: NetBSD
add_package ADDITIONAL_LIST libnghttp3 ||
add_package ADDITIONAL_LIST nghttp3 ||
echo "nghttp3 is unavailable"

# spandsp: NetBSD
add_package ADDITIONAL_LIST spandsp ||
echo "spandsp is unavailable"

# ninja: FreeBSD, OpenBSD
# ninja-build: NetBSD
add_package ADDITIONAL_LIST ninja-build ||
add_package ADDITIONAL_LIST ninja ||
echo "ninja is unavailable"

# libilbc: FreeBSD
add_package ADDITIONAL_LIST libilbc ||
echo "libilbc is unavailable"

# lua: OpenBSD latest (current 5.4)
# lua54: FreeBSD, NetBSD 5.4.x
# lua53 is also acceptable
add_package ADDITIONAL_LIST lua ||
add_package ADDITIONAL_LIST lua54 ||
add_package ADDITIONAL_LIST lua53 ||
echo "lua >= 5.3 is unavailable"

# Add OS-specific required/optional packages
# Those not listed don't require additions.
case $( uname ) in
	FreeBSD | NetBSD)
		add_package ADDITIONAL_LIST libgcrypt || echo "libgcrypt is unavailable"
		;;
esac

ACTUAL_LIST=$BASIC_LIST

# Now arrange for optional support libraries
if [ $ADDITIONAL -ne 0 ]
then
	ACTUAL_LIST="$ACTUAL_LIST $ADDITIONAL_LIST"
fi

# shellcheck disable=SC2086
$PM $PM_OPTIONS $ACTUAL_LIST $OPTIONS
if [ ! $? ]
then
	exit 2
fi

if [ $ADDITIONAL -eq 0 ]
then
	printf "\\n*** Optional packages not installed. Rerun with --install-optional to have them.\\n"
fi