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/*
Copyright (C) 2004-2006 Grame
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "JackWinNamedPipe.h"
#include "JackError.h"
#include <assert.h>
#define BUFSIZE 4096
namespace Jack
{
int JackWinNamedPipe::Read(void* data, int len)
{
DWORD read;
BOOL res = ReadFile(fNamedPipe, data, len, &read, NULL);
if (read != len) {
jack_error("Cannot read named pipe err = %ld", GetLastError());
return -1;
} else {
return 0;
}
}
int JackWinNamedPipe::Write(void* data, int len)
{
DWORD written;
BOOL res = WriteFile(fNamedPipe, data, len, &written, NULL);
if (written != len) {
jack_error("Cannot write named pipe err = %ld", GetLastError());
return -1;
} else {
return 0;
}
}
int JackWinNamedPipeClient::Connect(const char* dir, int which)
{
sprintf(fName, "\\\\.\\pipe\\%s_jack_%d", dir, which);
JackLog("Connect: fName %s\n", fName);
fNamedPipe = CreateFile(fName, // pipe name
GENERIC_READ | // read and write access
GENERIC_WRITE,
0, // no sharing
NULL, // default security attributes
OPEN_EXISTING, // opens existing pipe
0, // default attributes
NULL); // no template file
if (fNamedPipe == INVALID_HANDLE_VALUE) {
jack_error("Cannot connect to named pipe = %s err = %ld", fName, GetLastError());
return -1;
} else {
return 0;
}
}
int JackWinNamedPipeClient::Connect(const char* dir, const char* name, int which)
{
sprintf(fName, "\\\\.\\pipe\\%s_jack_%s_%d", dir, name, which);
JackLog("Connect: fName %s\n", fName);
fNamedPipe = CreateFile(fName, // pipe name
GENERIC_READ | // read and write access
GENERIC_WRITE,
0, // no sharing
NULL, // default security attributes
OPEN_EXISTING, // opens existing pipe
0, // default attributes
NULL); // no template file
if (fNamedPipe == INVALID_HANDLE_VALUE) {
jack_error("Cannot connect to named pipe = %s err = %ld", fName, GetLastError());
return -1;
} else {
return 0;
}
}
int JackWinNamedPipeClient::Close()
{
if (fNamedPipe != INVALID_HANDLE_VALUE) {
CloseHandle(fNamedPipe);
fNamedPipe = INVALID_HANDLE_VALUE;
return 0;
} else {
return -1;
}
}
void JackWinNamedPipeClient::SetReadTimeOut(long sec)
{}
void JackWinNamedPipeClient::SetWriteTimeOut(long sec)
{}
JackWinAsyncNamedPipeClient::JackWinAsyncNamedPipeClient()
: JackWinNamedPipeClient(), fIOState(kIdle), fPendingIO(false)
{
fIOState = kIdle;
fOverlap.hEvent = CreateEvent(NULL, // default security attribute
TRUE, // manual-reset event
TRUE, // initial state = signaled
NULL); // unnamed event object
}
JackWinAsyncNamedPipeClient::JackWinAsyncNamedPipeClient(HANDLE pipe, bool pending)
: JackWinNamedPipeClient(pipe), fIOState(kIdle), fPendingIO(pending)
{
fOverlap.hEvent = CreateEvent(NULL, // default security attribute
TRUE, // manual-reset event
TRUE, // initial state = signaled
NULL); // unnamed event object
if (!fPendingIO)
SetEvent(fOverlap.hEvent);
fIOState = (fPendingIO) ? kConnecting : kReading;
}
JackWinAsyncNamedPipeClient::~JackWinAsyncNamedPipeClient()
{
CloseHandle(fOverlap.hEvent);
}
int JackWinAsyncNamedPipeClient::FinishIO()
{
DWORD success, ret;
success = GetOverlappedResult(fNamedPipe, // handle to pipe
&fOverlap, // OVERLAPPED structure
&ret, // bytes transferred
FALSE); // do not wait
switch (fIOState) {
case kConnecting:
if (!success) {
jack_error("Conection error");
return -1;
} else {
fIOState = kReading;
// Prepare connection for new client ??
}
break;
case kReading:
if (!success || ret == 0) {
return -1;
}
fIOState = kWriting;
break;
case kWriting:
if (!success || ret == 0) {
return -1;
}
fIOState = kReading;
break;
}
return 0;
}
int JackWinAsyncNamedPipeClient::Read(void* data, int len)
{
DWORD read;
JackLog("JackWinNamedPipeClient::Read len = %ld\n", len);
BOOL res = ReadFile(fNamedPipe, data, len, &read, &fOverlap);
JackLog("JackWinNamedPipeClient::Read res = %ld read %ld\n", res, read);
if (res && read != 0) {
fPendingIO = false;
fIOState = kWriting;
return 0;
} else if (!res && GetLastError() == ERROR_IO_PENDING) {
fPendingIO = true;
return 0;
} else {
jack_error("Cannot read named pipe err = %ld", GetLastError());
return -1;
}
}
int JackWinAsyncNamedPipeClient::Write(void* data, int len)
{
DWORD written;
JackLog("JackWinNamedPipeClient::Write len = %ld\n", len);
BOOL res = WriteFile(fNamedPipe, data, len, &written, &fOverlap);
if (res && written != 0) {
fPendingIO = false;
fIOState = kWriting;
return 0;
} else if (!res && GetLastError() == ERROR_IO_PENDING) {
fPendingIO = true;
return 0;
} else {
jack_error("Cannot write named pipe err = %ld", GetLastError());
return -1;
}
}
// Server side
int JackWinNamedPipeServer::Bind(const char* dir, int which)
{
sprintf(fName, "\\\\.\\pipe\\%s_jack_%d", dir, which);
JackLog("Bind: fName %s\n", fName);
if ((fNamedPipe = CreateNamedPipe(fName,
PIPE_ACCESS_DUPLEX, // read/write access
PIPE_TYPE_MESSAGE | // message type pipe
PIPE_READMODE_MESSAGE | // message-read mode
PIPE_WAIT, // blocking mode
PIPE_UNLIMITED_INSTANCES, // max. instances
BUFSIZE, // output buffer size
BUFSIZE, // input buffer size
INFINITE, // client time-out
NULL)) == INVALID_HANDLE_VALUE) { // no security a
jack_error("Cannot bind server to pipe err = %ld", GetLastError());
return -1;
} else {
return 0;
}
}
int JackWinNamedPipeServer::Bind(const char* dir, const char* name, int which)
{
sprintf(fName, "\\\\.\\pipe\\%s_jack_%s_%d", dir, name, which);
JackLog("Bind: fName %s\n", fName);
if ((fNamedPipe = CreateNamedPipe(fName,
PIPE_ACCESS_DUPLEX, // read/write access
PIPE_TYPE_MESSAGE | // message type pipe
PIPE_READMODE_MESSAGE | // message-read mode
PIPE_WAIT, // blocking mode
PIPE_UNLIMITED_INSTANCES, // max. instances
BUFSIZE, // output buffer size
BUFSIZE, // input buffer size
INFINITE, // client time-out
NULL)) == INVALID_HANDLE_VALUE) { // no security a
jack_error("Cannot bind server to pipe err = %ld", GetLastError());
return -1;
} else {
return 0;
}
}
bool JackWinNamedPipeServer::Accept()
{
if (ConnectNamedPipe(fNamedPipe, NULL)) {
return true;
} else {
jack_error("Cannot bind server pipe name = %s err = %ld", fName, GetLastError());
if (GetLastError() == ERROR_PIPE_CONNECTED) {
jack_error("pipe already connnected = %s ", fName);
return true;
} else {
return false;
}
}
}
JackWinNamedPipeClient* JackWinNamedPipeServer::AcceptClient()
{
if (ConnectNamedPipe(fNamedPipe, NULL)) {
JackWinNamedPipeClient* client = new JackWinNamedPipeClient(fNamedPipe);
// Init the pipe to the default value
fNamedPipe = INVALID_HANDLE_VALUE;
return client;
} else {
switch (GetLastError()) {
case ERROR_PIPE_CONNECTED:
return new JackWinNamedPipeClient(fNamedPipe);
default:
jack_error("Cannot connect server pipe name = %s err = %ld", fName, GetLastError());
return NULL;
break;
}
}
}
int JackWinNamedPipeServer::Close()
{
JackLog("JackWinNamedPipeServer::Close\n");
if (fNamedPipe != INVALID_HANDLE_VALUE) {
DisconnectNamedPipe(fNamedPipe);
CloseHandle(fNamedPipe);
fNamedPipe = INVALID_HANDLE_VALUE;
return 0;
} else {
return -1;
}
}
// Server side
int JackWinAsyncNamedPipeServer::Bind(const char* dir, int which)
{
sprintf(fName, "\\\\.\\pipe\\%s_jack_%d", dir, which);
JackLog("Bind: fName %s\n", fName);
if ((fNamedPipe = CreateNamedPipe(fName,
PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED, // read/write access
PIPE_TYPE_MESSAGE | // message type pipe
PIPE_READMODE_MESSAGE | // message-read mode
PIPE_WAIT, // blocking mode
PIPE_UNLIMITED_INSTANCES, // max. instances
BUFSIZE, // output buffer size
BUFSIZE, // input buffer size
INFINITE, // client time-out
NULL)) == INVALID_HANDLE_VALUE) { // no security a
jack_error("Cannot bind server to pipe err = %ld", GetLastError());
return -1;
} else {
return 0;
}
}
int JackWinAsyncNamedPipeServer::Bind(const char* dir, const char* name, int which)
{
sprintf(fName, "\\\\.\\pipe\\%s_jack_%s_%d", dir, name, which);
JackLog("Bind: fName %s\n", fName);
if ((fNamedPipe = CreateNamedPipe(fName,
PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED, // read/write access
PIPE_TYPE_MESSAGE | // message type pipe
PIPE_READMODE_MESSAGE | // message-read mode
PIPE_WAIT, // blocking mode
PIPE_UNLIMITED_INSTANCES, // max. instances
BUFSIZE, // output buffer size
BUFSIZE, // input buffer size
INFINITE, // client time-out
NULL)) == INVALID_HANDLE_VALUE) { // no security a
jack_error("Cannot bind server to pipe err = %ld", GetLastError());
return -1;
} else {
return 0;
}
}
JackWinNamedPipeClient* JackWinAsyncNamedPipeServer::AcceptClient()
{
if (ConnectNamedPipe(fNamedPipe, NULL)) {
return new JackWinAsyncNamedPipeClient(fNamedPipe, false);
} else {
switch (GetLastError()) {
case ERROR_IO_PENDING:
return new JackWinAsyncNamedPipeClient(fNamedPipe, true);
case ERROR_PIPE_CONNECTED:
return new JackWinAsyncNamedPipeClient(fNamedPipe, false);
default:
jack_error("Cannot connect server pipe name = %s err = %ld", fName, GetLastError());
return NULL;
break;
}
}
}
} // end of namespace
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