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/* vi:set ts=8 sts=4 sw=4:
*
* VIM - Vi IMproved by Bram Moolenaar
*
* Do ":help uganda" in Vim to read copying and usage conditions.
* Do ":help credits" in Vim to see a list of people who contributed.
*/
/*
* Implements communication through a socket or any file handle.
*/
#include "vim.h"
#if defined(FEAT_CHANNEL) || defined(PROTO)
/*
* Change the zero to 1 to enable debugging.
* This will write a file "channel_debug.log".
*/
#if 0
# define CHERROR(fmt, arg) cherror(fmt, arg)
# define CHLOG(idx, send, buf) chlog(idx, send, buf)
# define CHFILE "channel_debug.log"
static void cherror(char *fmt, char *arg);
static void chlog(int send, char_u *buf);
#else
# define CHERROR(fmt, arg)
# define CHLOG(idx, send, buf)
#endif
/* TRUE when netbeans is running with a GUI. */
#ifdef FEAT_GUI
# define CH_HAS_GUI (gui.in_use || gui.starting)
#endif
/* Note: when making changes here also adjust configure.in. */
#ifdef WIN32
/* WinSock API is separated from C API, thus we can't use read(), write(),
* errno... */
# define SOCK_ERRNO errno = WSAGetLastError()
# undef ECONNREFUSED
# define ECONNREFUSED WSAECONNREFUSED
# ifdef EINTR
# undef EINTR
# endif
# define EINTR WSAEINTR
# define sock_write(sd, buf, len) send(sd, buf, len, 0)
# define sock_read(sd, buf, len) recv(sd, buf, len, 0)
# define sock_close(sd) closesocket(sd)
# define sleep(t) Sleep(t*1000) /* WinAPI Sleep() accepts milliseconds */
#else
# include <netdb.h>
# include <netinet/in.h>
# include <sys/socket.h>
# ifdef HAVE_LIBGEN_H
# include <libgen.h>
# endif
# define SOCK_ERRNO
# define sock_write(sd, buf, len) write(sd, buf, len)
# define sock_read(sd, buf, len) read(sd, buf, len)
# define sock_close(sd) close(sd)
#endif
#ifdef FEAT_GUI_W32
extern HWND s_hwnd; /* Gvim's Window handle */
#endif
struct readqueue
{
char_u *buffer;
struct readqueue *next;
struct readqueue *prev;
};
typedef struct readqueue queue_T;
typedef struct {
sock_T ch_fd; /* the socket, -1 for a closed channel */
int ch_idx; /* used by channel_poll_setup() */
queue_T ch_head; /* dummy node, header for circular queue */
int ch_error; /* When TRUE an error was reported. Avoids giving
* pages full of error messages when the other side
* has exited, only mention the first error until the
* connection works again. */
#ifdef FEAT_GUI_X11
XtInputId ch_inputHandler; /* Cookie for input */
#endif
#ifdef FEAT_GUI_GTK
gint ch_inputHandler; /* Cookie for input */
#endif
#ifdef FEAT_GUI_W32
int ch_inputHandler = -1; /* simply ret.value of WSAAsyncSelect() */
#endif
void (*ch_close_cb)(void); /* callback invoked when channel is closed */
} channel_T;
/*
* Information about all channels.
* There can be gaps for closed channels, they will be reused later.
*/
static channel_T *channels = NULL;
static int channel_count = 0;
/*
* TODO: open debug file when desired.
*/
FILE *debugfd = NULL;
/*
* Add a new channel slot, return the index.
* The channel isn't actually used into ch_fd is set >= 0;
* Returns -1 if all channels are in use.
*/
static int
add_channel(void)
{
int idx;
channel_T *new_channels;
if (channels != NULL)
for (idx = 0; idx < channel_count; ++idx)
if (channels[idx].ch_fd < 0)
/* re-use a closed channel slot */
return idx;
if (channel_count == MAX_OPEN_CHANNELS)
return -1;
new_channels = (channel_T *)alloc(sizeof(channel_T) * (channel_count + 1));
if (new_channels == NULL)
return -1;
if (channels != NULL)
mch_memmove(new_channels, channels, sizeof(channel_T) * channel_count);
channels = new_channels;
(void)vim_memset(&channels[channel_count], 0, sizeof(channel_T));
channels[channel_count].ch_fd = (sock_T)-1;
#ifdef FEAT_GUI_X11
channels[channel_count].ch_inputHandler = (XtInputId)NULL;
#endif
#ifdef FEAT_GUI_GTK
channels[channel_count].ch_inputHandler = 0;
#endif
#ifdef FEAT_GUI_W32
channels[channel_count].ch_inputHandler = -1;
#endif
return channel_count++;
}
#if defined(FEAT_GUI) || defined(PROTO)
/*
* Read a command from netbeans.
*/
#ifdef FEAT_GUI_X11
static void
messageFromNetbeans(XtPointer clientData,
int *unused1 UNUSED,
XtInputId *unused2 UNUSED)
{
channel_read((int)(long)clientData);
}
#endif
#ifdef FEAT_GUI_GTK
static void
messageFromNetbeans(gpointer clientData,
gint unused1 UNUSED,
GdkInputCondition unused2 UNUSED)
{
channel_read((int)(long)clientData);
}
#endif
static void
channel_gui_register(int idx)
{
channel_T *channel = &channels[idx];
if (!CH_HAS_GUI)
return;
# ifdef FEAT_GUI_X11
/* tell notifier we are interested in being called
* when there is input on the editor connection socket
*/
if (channel->ch_inputHandler == (XtInputId)NULL)
channel->ch_inputHandler =
XtAppAddInput((XtAppContext)app_context, channel->ch_fd,
(XtPointer)(XtInputReadMask + XtInputExceptMask),
messageFromNetbeans, (XtPointer)idx);
# else
# ifdef FEAT_GUI_GTK
/*
* Tell gdk we are interested in being called when there
* is input on the editor connection socket
*/
if (channel->ch_inputHandler == 0)
channel->ch_inputHandler =
gdk_input_add((gint)channel->ch_fd, (GdkInputCondition)
((int)GDK_INPUT_READ + (int)GDK_INPUT_EXCEPTION),
messageFromNetbeans, (gpointer)(long)idx);
# else
# ifdef FEAT_GUI_W32
/*
* Tell Windows we are interested in receiving message when there
* is input on the editor connection socket.
* TODO: change WM_NETBEANS to something related to the channel index.
*/
if (channel->ch_inputHandler == -1)
channel->ch_inputHandler =
WSAAsyncSelect(channel->ch_fd, s_hwnd, WM_NETBEANS, FD_READ);
# endif
# endif
# endif
}
/*
* Register any of our file descriptors with the GUI event handling system.
* Called when the GUI has started.
*/
void
channel_gui_register_all(void)
{
int i;
for (i = 0; i < channel_count; ++i)
if (channels[i].ch_fd >= 0)
channel_gui_register(i);
}
static void
channel_gui_unregister(int idx)
{
channel_T *channel = &channels[idx];
# ifdef FEAT_GUI_X11
if (channel->ch_inputHandler != (XtInputId)NULL)
{
XtRemoveInput(channel->ch_inputHandler);
channel->ch_inputHandler = (XtInputId)NULL;
}
# else
# ifdef FEAT_GUI_GTK
if (channel->ch_inputHandler != 0)
{
gdk_input_remove(channel->ch_inputHandler);
channel->ch_inputHandler = 0;
}
# else
# ifdef FEAT_GUI_W32
if (channel->ch_inputHandler == 0)
{
WSAAsyncSelect(nbsock, s_hwnd, 0, 0);
channel->ch_inputHandler = -1;
}
# endif
# endif
# endif
}
#endif
/*
* Open a channel to "hostname":"port".
* Returns the channel number for success.
* Returns a negative number for failure.
*/
int
channel_open(char *hostname, int port_in, void (*close_cb)(void))
{
int sd;
struct sockaddr_in server;
struct hostent *
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