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// file : openssl/client/client.cxx -*- C++ -*-
// license : MIT; see accompanying LICENSE file
#include <iostream> // cin, cout
#include <libbutl/pager.hxx>
#include <openssl/protocol.hxx>
#include <openssl/diagnostics.hxx>
#include <openssl/client/options.hxx>
namespace openssl
{
namespace client
{
using namespace std;
using namespace butl;
static int
main (int argc, char* argv[])
try
{
// Parse the command/options.
//
string cmd;
options ops;
int i (1);
if (argc > i && *argv[i] != '-')
cmd = argv[i++];
cli::argv_scanner scan (i, argc, argv);
ops.parse (scan);
// Version.
//
if (ops.version ())
{
cout << "openssl-client " << OPENSSL_AGENT_VERSION_ID << endl
<< "libbutl " << LIBBUTL_VERSION_ID << endl
<< "Copyright (c) " << OPENSSL_AGENT_COPYRIGHT << "." << endl
<< "This is free software released under the MIT license."
<< endl;
return 0;
}
// Help.
//
if (ops.help ())
{
pager p ("openssl-client help", false);
print_openssl_client_usage (p.stream ());
// If the pager failed, assume it has issued some diagnostics.
//
return p.wait () ? 0 : 1;
}
if (cmd != "pkeyutl" && cmd != "rsautl")
fail << "openssl-client command expected" <<
info << "run '" << argv[0] << " --help' for more information";
if (!ops.sign ())
fail << "-sign option is required";
if (!ops.keyform_specified ())
fail << "-keyform option is required";
if (ops.keyform () != "engine")
fail << "invalid value '" << ops.keyform ()
<< "' for option -keyform";
if (!ops.engine_specified ())
fail << "-engine option is required";
if (ops.engine () != "pkcs11")
fail << "invalid value '" << ops.engine () << "' for option -engine";
if (!ops.inkey_specified ())
fail << "-inkey option is required";
// Obtain the agent socket path.
//
path sock_path;
try
{
optional<string> p (getenv ("OPENSSL_AGENT_PKCS11_SOCK"));
if (!p)
fail << "OPENSSL_AGENT_PKCS11_SOCK environment variable is not set";
sock_path = path (move (*p));
}
catch (const invalid_path& e)
{
fail << "invalid OPENSSL_AGENT_PKCS11_SOCK environment variable "
<< "value '" << e.path << "'";
}
// Read the data to sign from stdin.
//
vector<char> data;
try
{
stdin_fdmode (fdstream_mode::binary);
cin.exceptions (ostream::badbit | ostream::failbit);
data = vector<char> (istreambuf_iterator<char> (cin),
istreambuf_iterator<char> ());
}
catch (const io_error&)
{
fail << "unable to read data from stdin";
}
// Sign the data.
//
vector<char> signature;
try
{
auto_fd sock (connect (sock_path));
ifdstream is (fddup (sock.get ()));
ofdstream os (move (sock));
string s (ops.simulate_specified ()
? to_string (ops.simulate ())
: "");
os << request ("sign",
strings ({ops.inkey (), move (s)}),
move (data));
os.close ();
response r;
is >> r;
if (r.status != 0)
{
text << r.error;
return r.status;
}
signature = move (r.output);
}
catch (const io_error&)
{
fail << "unable to communicate with openssl-agent-pkcs11";
}
// Write it out.
//
try
{
stdout_fdmode (fdstream_mode::binary);
cout.exceptions (ostream::badbit | ostream::failbit);
cout.write (signature.data (), signature.size ());
}
catch (const io_error&)
{
fail << "error: unable to write signature to stdout";
}
return 0;
}
catch (const failed&)
{
return 1; // Diagnostics has already been issued.
}
catch (const cli::exception& e)
{
error << e;
return 1;
}
}
}
int
main (int argc, char* argv[])
{
return openssl::client::main (argc, argv);
}
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