class Openssh < Formula
  desc "OpenBSD freely-licensed SSH connectivity tools"
  homepage "https://www.openssh.com/"
  url "https://cdn.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-9.0p1.tar.gz"
  mirror "https://cloudflare.cdn.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-9.0p1.tar.gz"
  version "9.0p1"
  sha256 "03974302161e9ecce32153cfa10012f1e65c8f3750f573a73ab1befd5972a28a"
  license "SSH-OpenSSH"
  revision 1

  livecheck do
    url "https://ftp.openbsd.org/pub/OpenBSD/OpenSSH/portable/"
    regex(/href=.*?openssh[._-]v?(\d+(?:\.\d+)+(?:p\d+)?)\.t/i)
  end

  bottle do
    sha256 arm64_monterey: "dc8a68702befc83e394381378cc20c9c5c9440b9f31a8e491ba4605f14c31f44"
    sha256 arm64_big_sur:  "6c77da617ec1fdc44037faef2e0242cbef97a9acc26025f2386c884d467865a2"
    sha256 monterey:       "e0ba7d39ae68ecd653bc5bbe73ceb252f148a51bd5e7257ed6316973023bb73c"
    sha256 big_sur:        "2aeab07efa1366184ce592a5c172440a74f4c8ed2b68d6b8c0a70740f274e519"
    sha256 catalina:       "fccb117717bad0d24f7cd48eb3b075299ead1d1153e8dde2a95e0de31a7990d0"
    sha256 x86_64_linux:   "8e7f4971bbad2e288324a409b473215e582915ef297c34f645b346413c018664"
  end

  # Please don't resubmit the keychain patch option. It will never be accepted.
  # https://archive.is/hSB6d#10%25

  depends_on "pkg-config" => :build
  depends_on "ldns"
  depends_on "libfido2"
  depends_on "openssl@1.1"

  uses_from_macos "lsof" => :test
  uses_from_macos "krb5"
  uses_from_macos "libedit"
  uses_from_macos "libxcrypt"
  uses_from_macos "zlib"

  on_macos do
    # Both these patches are applied by Apple.
    # https://github.com/apple-oss-distributions/OpenSSH/blob/main/openssh/sandbox-darwin.c#L66
    patch do
      url "https://raw.githubusercontent.com/Homebrew/patches/1860b0a745f1fe726900974845d1b0dd3c3398d6/openssh/patch-sandbox-darwin.c-apple-sandbox-named-external.diff"
      sha256 "d886b98f99fd27e3157b02b5b57f3fb49f43fd33806195970d4567f12be66e71"
    end

    # https://github.com/apple-oss-distributions/OpenSSH/blob/main/openssh/sshd.c#L532
    patch do
      url "https://raw.githubusercontent.com/Homebrew/patches/d8b2d8c2612fd251ac6de17bf0cc5174c3aab94c/openssh/patch-sshd.c-apple-sandbox-named-external.diff"
      sha256 "3505c58bf1e584c8af92d916fe5f3f1899a6b15cc64a00ddece1dc0874b2f78f"
    end
  end

  on_linux do
    depends_on "linux-pam"
  end

  resource "com.openssh.sshd.sb" do
    url "https://raw.githubusercontent.com/apple-oss-distributions/OpenSSH/OpenSSH-268.100.4/com.openssh.sshd.sb"
    sha256 "a273f86360ea5da3910cfa4c118be931d10904267605cdd4b2055ced3a829774"
  end

  def install
    if OS.mac?
      ENV.append "CPPFLAGS", "-D__APPLE_SANDBOX_NAMED_EXTERNAL__"

      # Ensure sandbox profile prefix is correct.
      # We introduce this issue with patching, it's not an upstream bug.
      inreplace "sandbox-darwin.c", "@PREFIX@/share/openssh", etc/"ssh"
    end

    args = *std_configure_args + %W[
      --sysconfdir=#{etc}/ssh
      --with-ldns
      --with-libedit
      --with-kerberos5
      --with-pam
      --with-ssl-dir=#{Formula["openssl@1.1"].opt_prefix}
      --with-security-key-builtin
    ]

    args << "--with-privsep-path=#{var}/lib/sshd" if OS.linux?

    system "./configure", *args
    system "make"
    ENV.deparallelize
    system "make", "install"

    # This was removed by upstream with very little announcement and has
    # potential to break scripts, so recreate it for now.
    # Debian have done the same thing.
    bin.install_symlink bin/"ssh" => "slogin"

    buildpath.install resource("com.openssh.sshd.sb")
    (etc/"ssh").install "com.openssh.sshd.sb" => "org.openssh.sshd.sb"
  end

  test do
    assert_match "OpenSSH_", shell_output("#{bin}/ssh -V 2>&1")

    port = free_port
    fork { exec sbin/"sshd", "-D", "-p", port.to_s }
    sleep 2
    assert_match "sshd", shell_output("lsof -i :#{port}")
  end
end