Added formula for vsftpd.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

Formula/vsftpd.rb

@@ -0,0 +1,54 @@
+require 'formula'
+
+class Vsftpd <Formula
+  url 'ftp://vsftpd.beasts.org/users/cevans/vsftpd-2.3.2.tar.gz'
+  md5 'bad7b117d737a738738836041edc00db'
+  homepage 'http://vsftpd.beasts.org/'
+
+  def patches
+    # Patch so vsftpd doesn't depend on UTMPX, and can't find OS X's PAM library.
+    DATA
+  end
+  
+  def install
+    inreplace "defs.h", "/etc/vsftpd.conf", "#{etc}/vsftpd.conf"
+    inreplace "tunables.c", "/etc", etc
+    inreplace "tunables.c", "/var", var
+    system "make"
+
+    # make install has all the paths hardcoded, so it's simpler to do this by hand:
+    sbin.install "vsftpd"
+    man5.install "vsftpd.conf.5"
+    man8.install "vsftpd.8"
+  end
+end
+
+__END__
+diff --git a/sysdeputil.c b/sysdeputil.c
+index 9dc8a5e..66dbe30 100644
+--- a/sysdeputil.c
++++ b/sysdeputil.c
+@@ -64,6 +64,10 @@
+ #include <utmpx.h>
+ 
+ /* BEGIN config */
++#if defined(__APPLE__)
++  #undef VSF_SYSDEP_HAVE_UTMPX
++#endif
++
+ #if defined(__linux__)
+   #include <errno.h>
+   #include <syscall.h>
+diff --git a/vsf_findlibs.sh b/vsf_findlibs.sh
+index b988be6..68d4a34 100755
+--- a/vsf_findlibs.sh
++++ b/vsf_findlibs.sh
+@@ -20,6 +20,8 @@ if find_func pam_start sysdeputil.o; then
+   locate_library /usr/lib/libpam.sl && echo "-lpam";
+   # AIX ends shared libraries with .a
+   locate_library /usr/lib/libpam.a && echo "-lpam";
++  # Mac OS X / Darwin shared libraries with .dylib
++  locate_library /usr/lib/libpam.dylib && echo "-lpam";
+ else
+   locate_library /lib/libcrypt.so && echo "-lcrypt";
+   locate_library /usr/lib/libcrypt.so && echo "-lcrypt";