webfs: use sha256 and fix audit

Closes Homebrew/homebrew#41953.

Signed-off-by: Xu Cheng <xucheng@me.com>

Formula/webfs.rb

@@ -1,18 +1,30 @@
-require 'formula'
-
 class Webfs < Formula
   desc "HTTP server for purely static content"
-  homepage 'http://linux.bytesex.org/misc/webfs.html'
-  url 'http://dl.bytesex.org/releases/webfs/webfs-1.21.tar.gz'
-  sha1 'a38880d8cb21e415244d220115ede7b573ac890c'
+  homepage "http://linux.bytesex.org/misc/webfs.html"
+  url "https://www.kraxel.org/releases/webfs/webfs-1.21.tar.gz"
+  sha256 "98c1cb93473df08e166e848e549f86402e94a2f727366925b1c54ab31064a62a"
+  revision 1
+
+  depends_on "openssl"
 
   patch :p0 do
     url "https://trac.macports.org/export/21504/trunk/dports/www/webfs/files/patch-ls.c"
-    sha1 "0c408afff6df5b85f3c61afd4f44eb1944ba3a17"
+    sha256 "8ddb6cb1a15f0020bbb14ef54a8ae5c6748a109564fa461219901e7e34826170"
   end
 
   def install
     ENV["prefix"]=prefix
-    system "make install mimefile=/etc/apache2/mime.types"
+    system "make", "install", "mimefile=/etc/apache2/mime.types"
+  end
+
+  test do
+    begin
+      pid = fork { exec bin/"webfsd", "-F" }
+      sleep 2
+      assert_match %r{webfs\/1.21}, shell_output("curl localhost:8000")
+    ensure
+      Process.kill("SIGINT", pid)
+      Process.wait(pid)
+    end
   end
 end