class Openssh < Formula
  desc "OpenBSD freely-licensed SSH connectivity tools"
  homepage "https://www.openssh.com/"
  url "https://ftp.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-7.5p1.tar.gz"
  mirror "https://www.mirrorservice.org/pub/OpenBSD/OpenSSH/portable/openssh-7.5p1.tar.gz"
  version "7.5p1"
  sha256 "9846e3c5fab9f0547400b4d2c017992f914222b3fd1f8eee6c7dc6bc5e59f9f0"
  revision 1

  bottle do
    sha256 "87916642682b44296aa06297aaeeb2ef10519c6d0363d5286be74657e8758167" => :sierra
    sha256 "d3573d5402f065728fed6bd00085d6d4599b7151f14ac1cdf000a3140a9526a6" => :el_capitan
    sha256 "36eab43111afa57e0a3c112b09e85453613196e85922ae546a599d54b555556b" => :yosemite
  end

  # Please don't resubmit the keychain patch option. It will never be accepted.
  # https://github.com/Homebrew/homebrew-dupes/pull/482#issuecomment-118994372

  depends_on "openssl"
  depends_on "ldns" => :optional
  depends_on "pkg-config" => :build if build.with? "ldns"

  # Both these patches are applied by Apple.
  patch do
    url "https://raw.githubusercontent.com/Homebrew/patches/1860b0a74/openssh/patch-sandbox-darwin.c-apple-sandbox-named-external.diff"
    sha256 "d886b98f99fd27e3157b02b5b57f3fb49f43fd33806195970d4567f12be66e71"
  end

  patch do
    url "https://raw.githubusercontent.com/Homebrew/patches/d8b2d8c2/openssh/patch-sshd.c-apple-sandbox-named-external.diff"
    sha256 "3505c58bf1e584c8af92d916fe5f3f1899a6b15cc64a00ddece1dc0874b2f78f"
  end

  resource "com.openssh.sshd.sb" do
    url "https://opensource.apple.com/source/OpenSSH/OpenSSH-209.50.1/com.openssh.sshd.sb"
    sha256 "a273f86360ea5da3910cfa4c118be931d10904267605cdd4b2055ced3a829774"
  end

  def install
    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"

    args = %W[
      --with-libedit
      --with-kerberos5
      --prefix=#{prefix}
      --sysconfdir=#{etc}/ssh
      --with-pam
      --with-ssl-dir=#{Formula["openssl"].opt_prefix}
    ]

    args << "--with-ldns" if build.with? "ldns"

    system "./configure", *args
    system "make"
    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")

    begin
      pid = fork { exec sbin/"sshd", "-D", "-p", "8022" }
      sleep 2
      assert_match "sshd", shell_output("lsof -i :8022")
    ensure
      Process.kill(9, pid)
      Process.wait(pid)
    end
  end
end