Implement openssl process

1 files changed, 96 insertions, 0 deletions

diff --git a/libbutl/openssl.cxx b/libbutl/openssl.cxx
new file mode 100644
index 0000000..aa4e720
--- /dev/null
+++ b/libbutl/openssl.cxx
@@ -0,0 +1,96 @@
+// file      : libbutl/openssl.cxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+#include <libbutl/openssl.hxx>
+
+#include <utility> // move()
+
+using namespace std;
+
+namespace butl
+{
+  int openssl::
+  map_in (nullfd_t, io_data& d)
+  {
+    d.pipe.in = fdnull (); // /dev/null
+    return d.pipe.in.get ();
+  }
+
+  int openssl::
+  map_in (const path& f, io_data& d)
+  {
+    if (f.string () == "-")
+    {
+      // Note: no need for any options, openssl reads from stdin by default.
+      //
+      d.pipe = fdopen_pipe (fdopen_mode::binary);
+      out.open (move (d.pipe.out));
+    }
+    else
+    {
+      d.options.push_back ("-in");
+      d.options.push_back (f.string ().c_str ());
+      d.pipe.in = fdnull (); // /dev/null
+    }
+
+    return d.pipe.in.get ();
+  }
+
+  int openssl::
+  map_in (fdstream_mode m, io_data& d)
+  {
+    assert (m == fdstream_mode::text || m == fdstream_mode::binary);
+
+    // Note: no need for any options, openssl reads from stdin by default.
+    //
+    d.pipe = fdopen_pipe (m == fdstream_mode::binary
+                          ? fdopen_mode::binary
+                          : fdopen_mode::none);
+
+    out.open (move (d.pipe.out));
+    return d.pipe.in.get ();
+  }
+
+  int openssl::
+  map_out (nullfd_t, io_data& d)
+  {
+    d.pipe.out = fdnull ();
+    return d.pipe.out.get (); // /dev/null
+  }
+
+  int openssl::
+  map_out (const path& f, io_data& d)
+  {
+    if (f.string () == "-")
+    {
+      // Note: no need for any options, openssl writes to stdout by default.
+      //
+      d.pipe = fdopen_pipe (fdopen_mode::binary);
+      in.open (move (d.pipe.in), fdstream_mode::skip);
+    }
+    else
+    {
+      d.options.push_back ("-out");
+      d.options.push_back (f.string ().c_str ());
+      d.pipe.out = fdnull (); // /dev/null
+    }
+
+    return d.pipe.out.get ();
+  }
+
+  int openssl::
+  map_out (fdstream_mode m, io_data& d)
+  {
+    assert (m == fdstream_mode::text || m == fdstream_mode::binary);
+
+    // Note: no need for any options, openssl writes to stdout by default.
+    //
+    d.pipe = fdopen_pipe (m == fdstream_mode::binary
+                          ? fdopen_mode::binary
+                          : fdopen_mode::none);
+
+    in.open (move (d.pipe.in), fdstream_mode::skip);
+    return d.pipe.out.get ();
+  }
+}