hl-pak0-gen/dl_sources.sh

#!/bin/sh

# fetches all of our download sources (and verifies them)
set -e

fetch_resource()
{
	BASENAME=$(basename "$1")
	SHA512FILE=$(cat "./sums/$BASENAME.sha512")

	if [ ! -f "$BASENAME" ]
	then
		printf "Grabbing $2..."
		wget -nc "$1"
		printf "\n"
	fi

	SHA512SUM=$(sha512sum "$BASENAME")

	if [ "$SHA512SUM" = "$SHA512FILE" ]
	then
		printf "$BASENAME has been verified.\n"
	else
		printf "$BASENAME has the invalid sha512sum. Error!\n"
		exit
	fi
}

fetch_resource "http://archive.org/download/Half-lifeUplink/hluplink.exe" "Half-Life: Uplink"
fetch_resource "http://archive.org/download/half-life-patches/English/Update 1.1.1.0 English/hl1110.exe" "Half-Life: Patch 1.1.1.0"
fetch_resource "https://archive.org/download/opfor-demo/opfordemofull.exe" "Half-Life: Opposing Force - Demo"
fetch_resource "https://downloads.ammahls.com/HLSDK/hl_sdk_v23.exe" "Half-Life SDK v2.3"

# if we pass a Steam path, skip this one
if [ -z "$HL_STEAM_INSTALL" ]
then
	fetch_resource "http://archive.org/download/steaminstall_halflife/steaminstall_halflife.exe" "Steam Installer with Half-Life Cache"
fi