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# include "ae_protocol.hh"
# include "messages.pb.h"
# include <giomm.h>
# include <string>
# include <mutex>
# include <iostream>
#ifdef ASTROID_WEBEXTENSION
# include <boost/log/core.hpp>
# include <boost/log/trivial.hpp>
# define LOG(x) BOOST_LOG_TRIVIAL(x)
# define warn warning
#else
# include "astroid.hh"
#endif
namespace Astroid {
const char * AeProtocol::MessageTypeStrings[] = {
"Debug",
"Ack",
"Info",
"Page",
"State",
"Indent",
"AllowRemoteImages",
"Focus",
"Navigate",
"Mark",
"Hidden",
"ClearMessages",
"AddMessage",
"UpdateMessage",
"RemoveMessage",
};
void AeProtocol::send_message (
MessageTypes mt,
const ::google::protobuf::Message &m,
Glib::RefPtr<Gio::OutputStream> ostream)
{
std::string o;
gsize written = 0;
bool s = false;
m.SerializeToString (&o);
/* send size of message */
gsize sz = o.size ();
s = ostream->write_all ((char*) &sz, sizeof(sz), written);
/* send message type */
s &= ostream->write_all ((char*) &mt, sizeof (mt), written);
/* send message */
try {
s &= ostream->write_all (o, written);
} catch (Gio::Error &ex) {
LOG (error) << "ae: error: " << ex.what ();
throw;
}
ostream->flush ();
if (!s) {
LOG (error) << "ae: could not write message!";
throw ipc_error ("could not write message.");
} else {
LOG (debug) << "ae: wrote: " << written << " of " << o.size () << " bytes.";
}
}
void AeProtocol::send_message_async (
MessageTypes mt,
const ::google::protobuf::Message &m,
Glib::RefPtr<Gio::OutputStream> ostream,
std::mutex &m_ostream)
{
LOG (debug) << "ae: sending: " << MessageTypeStrings[mt];
LOG (debug) << "ae: send (async) waiting for lock";
std::lock_guard<std::mutex> lk (m_ostream);
send_message (mt, m, ostream);
LOG (debug) << "ae: send (async) message sent.";
}
AstroidMessages::Ack AeProtocol::send_message_sync (
MessageTypes mt,
const ::google::protobuf::Message &m,
Glib::RefPtr<Gio::OutputStream> ostream,
std::mutex & m_ostream,
Glib::RefPtr<Gio::InputStream> istream,
std::mutex & m_istream)
{
LOG (debug) << "ae: sending: " << MessageTypeStrings[mt];
LOG (debug) << "ae: send (sync) waiting for lock..";
std::lock_guard<std::mutex> rlk (m_istream);
std::lock_guard<std::mutex> wlk (m_ostream);
LOG (debug) << "ae: send (sync) lock acquired.";
/* send message */
send_message (mt, m, ostream);
/* read response */
LOG (debug) << "ae: send (sync) waiting for ACK..";
AstroidMessages::Ack a;
a.set_success (false);
{
std::vector<gchar> msg_str;
auto mt = read_message (
istream,
Glib::RefPtr<Gio::Cancellable> (NULL),
msg_str);
/* parse message */
if (mt != AeProtocol::MessageTypes::Ack) {
LOG (debug) << "ae: reader: did not get Ack message back!";
return a;
}
LOG (debug) << "ae: send (sync) ACK received.";
a.ParseFromArray (msg_str.data(), msg_str.size());
}
return a;
}
AeProtocol::MessageTypes AeProtocol::read_message (
Glib::RefPtr<Gio::InputStream> istream,
Glib::RefPtr<Gio::Cancellable> reader_cancel,
std::vector<gchar> &buffer)
{
gsize read = 0;
bool s = false;
/* read message size */
gsize msg_sz = 0;
s = istream->read_all ((char *) &msg_sz, sizeof (msg_sz), read, reader_cancel);
if (!s || read != sizeof (msg_sz)) {
throw ipc_error ("could not read message size");
}
if (msg_sz > AeProtocol::MAX_MESSAGE_SZ) {
throw ipc_error ("message exceeds maximum size.");
}
AeProtocol::MessageTypes mt;
s = istream->read_all ((char*) &mt, sizeof (mt), read, reader_cancel);
if (!s || read != sizeof (mt)) {
throw ipc_error ("could not read message type");
}
/* read message */
buffer.resize (msg_sz);
try {
s = istream->read_all (buffer.data(), msg_sz, read, reader_cancel);
} catch (Gio::Error &ex) {
LOG (error) << "ae: error (read): " << ex.code() << ", " << ex.what ();
throw;
}
if (!s || read != msg_sz) {
LOG (error) << "reader: error while reading message (size: " << msg_sz << ")";
throw ipc_error ("could not read message");
}
return mt;
}
/***************
* Exceptions
***************/
AeProtocol::ipc_error::ipc_error (const char * w) : runtime_error (w)
{
}
}
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