getiso.sh

echo "==> Getting latest ubuntu iso url"
url_1804=http://cdimage.ubuntu.com/releases/18.04/release/
iso_1804=$(curl "$url_1804" | grep server-amd64.iso | sed -E 's/^.+href="([^"]+)".+$/\1/' | head -1)
sha256_1804=$(curl "$url_1804/SHA256SUMS" | grep server-amd64.iso | cut -f 1 -d ' ')

url_2004=http://cdimage.ubuntu.com/ubuntu-legacy-server/releases/20.04/release/
iso_2004=$(curl "$url_2004" | grep server-amd64.iso | sed -E  's/^.+href="([^"]+)".+$/\1/' | head -1 )
sha256_2004=$(curl "$url_2004/SHA256SUMS" | grep server-amd64.iso | sort -r | head -1 | cut -f 1 -d ' ')

echo "==> Getting latest windows server 2012r2 iso url, this takes time..."
url_win2012=https://www.microsoft.com/en-us/evalcenter/evaluate-windows-server-2012-r2?filetype=ISO
iso_win2012=$(curl "$url_win2012" | grep .ISO | grep EN-US | sed -ne 's/.*\(http[^"]*\).*/\1/p' | sed 's/"//g' | tr -d "\r" )
sha256_win2012=$(curl -s "$iso_win2012" | openssl sha256)

echo "==> Getting latest windows server 2019 iso url, this takes time..."
url_win2019=https://www.microsoft.com/en-US/evalcenter/evaluate-windows-server-2019?filetype=ISO
iso_win2019=$(curl "$url_win2019" | grep .iso | grep en-us | sed -ne 's/.*\(https[^"]*\).*/\1/p' | sed 's/"//g' | tr -d "\r" )
sha256_win2019=$(curl -s "$iso_win2019" | openssl sha256)

echo "==> Getting latest windows server 2022 iso url, this takes time..."
url_win2022=https://www.microsoft.com/en-US/evalcenter/evaluate-windows-server-2022?filetype=ISO
iso_win2022=$(curl "$url_win2022" | grep .iso | grep en-us | sed -ne 's/.*\(https[^"]*\).*/\1/p' | sed 's/"//g' | tr -d "\r" )
sha256_win2022=$(curl -s "$iso_win2022" | openssl sha256)

echo "==> Setting windows 10 iso path manually as this is impossible to curl"
iso_win10=iso/Win10_20H2_Norwegian_x64.iso
sha256_win10="e8887540923f793a39a90ec0bb4cd0fc1fa2d4bd9f8c3c9c87f71962fc3e816b"

echo "==> Populate iso variable"
cat > isovars.json <<EOF
{
  "iso_url_1804": "$url_1804$iso_1804",
  "iso_checksum_1804": "$sha256_1804",
  "iso_url_2004": "$url_2004$iso_2004",
  "iso_checksum_2004": "$sha256_2004",
  "iso_url_win2012": "$iso_win2012",
  "iso_checksum_win2012": "$sha256_win2012",
  "iso_url_win2019": "$iso_win2019",
  "iso_checksum_win2019": "$sha256_win2019",
  "iso_url_win2022": "$iso_win2022",
  "iso_checksum_win2022": "$sha256_win2022",
  "iso_url_win10": "$iso_win10",
  "iso_checksum_win10": "$sha256_win10",
  "iso_checksum_type": "sha256"
}
EOF