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// file : openssl/protocol.cxx -*- C++ -*-
// license : MIT; see accompanying LICENSE file
#include <openssl/protocol.hxx>
#include <sys/un.h> // sockaddr_un
#include <sys/types.h>
#include <sys/socket.h>
#include <cstring> // strcpy()
namespace openssl
{
using namespace std;
auto_fd
connect (const path& p)
{
auto_fd sock (socket (AF_UNIX, SOCK_STREAM, 0));
if (sock.get () == -1)
throw_system_ios_failure (errno);
struct sockaddr_un addr;
memset (&addr, 0, sizeof(addr));
addr.sun_family = AF_UNIX;
if (p.string ().size () >= sizeof (addr.sun_path))
throw_generic_ios_failure (ENAMETOOLONG);
strcpy (addr.sun_path, p.string ().c_str ());
if (connect (sock.get (),
reinterpret_cast<sockaddr*> (&addr),
sizeof (addr)) == -1)
throw_system_ios_failure (errno);
return sock;
}
ostream&
operator<< (ostream& os, const request& r)
{
// Write the header: command, arguments count and input data length.
//
os << r.cmd << ' ' << r.args.size () << ' ' << r.input.size () << '\n';
// Write the arguments.
//
for (const string& a: r.args)
os.write (a.c_str (), a.size () + 1); // Includes the trailing '\0';
// Write the input data.
//
os.write (r.input.data (), r.input.size ());
return os << flush;
}
istream&
operator>> (istream& is, request& r)
{
// Read the header: command, arguments count and input data length.
//
size_t na, ni;
is >> r.cmd >> na >> ni;
if (is.get () != '\n')
{
is.setstate (istream::failbit);
return is;
}
// Read the arguments.
//
for (string l; na != 0 && !eof (getline (is, l, '\0')); --na)
r.args.push_back (move (l));
if (na != 0)
{
is.setstate (istream::failbit);
return is;
}
// Read the input data.
//
r.input.resize (ni);
return is.read (r.input.data (), ni);
}
ostream&
operator<< (ostream& os, const response& r)
{
// Write the header: status and output/error data lengths.
//
os << r.status << ' ' << r.output.size () << ' ' << r.error.size ()
<< '\n';
// Write the output and error data.
//
os.write (r.output.data (), r.output.size ());
os.write (r.error.data (), r.error.size ());
return os << flush;
}
istream&
operator>> (istream& is, response& r)
{
// Read the header: status and output/error data lengths.
//
size_t no, ne;
is >> r.status >> no >> ne;
if (is.get () != '\n')
{
is.setstate (istream::failbit);
return is;
}
// Read the output data.
//
r.output.resize (no);
is.read (r.output.data (), no);
// Read the error (text) data.
//
for (r.error.reserve (ne); ne != 0; --ne)
r.error.push_back (is.get ());
return is;
}
}
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