/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2008-2011. All Rights Reserved.
*
* The contents of this file are subject to the Erlang Public License,
* Version 1.1, (the "License"); you may not use this file except in
* compliance with the License. You should have received a copy of the
* Erlang Public License along with this software. If not, it can be
* retrieved online at http://www.erlang.org/.
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* %CopyrightEnd%
*/
#ifdef _WIN32
#include <windows.h>
#include <io.h>
#else
#include <unistd.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <fcntl.h>
#include "wxe_driver.h"
#define TEMP_BINARY_SIZE 512
static ErlDrvData wxe_driver_start(ErlDrvPort port, char *buff);
static int wxe_driver_load(void);
static void wxe_driver_stop(ErlDrvData handle);
static void wxe_driver_unload(void);
static int wxe_driver_control(ErlDrvData handle, unsigned int command,
char* buf, int count, char** res, int res_size);
static int wxe_driver_call(ErlDrvData drv_data, unsigned int command, char *buf, int len, char **rbuf, int rlen, unsigned int *flags);
static void standard_outputv(ErlDrvData drv_data, ErlIOVec *ev);
static void wxe_process_died(ErlDrvData drv_data, ErlDrvMonitor *monitor);
int wxe_debug;
wxe_data * wxe_master;
char * erl_wx_privdir;
/*
** The driver struct
*/
static ErlDrvEntry wxe_driver_entry = {
wxe_driver_load, /* F_PTR init, called at loading */
wxe_driver_start, /* L_PTR start, called when port is opened */
wxe_driver_stop, /* F_PTR stop, called when port is closed */
NULL, /* F_PTR output, called when erlang has sent */
NULL, /* F_PTR ready_input, called when input descriptor
ready */
NULL, /* F_PTR ready_output, called when output
descriptor ready */
"wxe_driver", /* char *driver_name, the argument to open_port */
wxe_driver_unload, /* F_PTR finish, called when unloaded */
NULL, /* void * that is not used (BC) */
wxe_driver_control, /* F_PTR control, port_control callback */
NULL, /* F_PTR timeout, reserved */
standard_outputv, /* F_PTR outputv, reserved */
NULL, /* async */
NULL, /* flush */
wxe_driver_call, /* call */
NULL, /* Event */
ERL_DRV_EXTENDED_MARKER,
ERL_DRV_EXTENDED_MAJOR_VERSION,
ERL_DRV_EXTENDED_MINOR_VERSION,
ERL_DRV_FLAG_USE_PORT_LOCKING, /* Port lock */
NULL, /* Reserved Handle */
wxe_process_died, /* Process Exited */
};
DRIVER_INIT(wxe_driver)
{
return &wxe_driver_entry;
}
int wxe_driver_load()
{
if(load_native_gui())
return 0;
else
return -1;
}
ErlDrvPort WXE_DRV_PORT = 0;
static ErlDrvData
wxe_driver_start(ErlDrvPort port, char *buff)
{
wxe_data *data;
data = (wxe_data *) malloc(sizeof(wxe_data));
wxe_debug = 0;
if (data == NULL) {
fprintf(stderr, " Couldn't alloc mem\r\n");
return(ERL_DRV_ERROR_GENERAL); /* ENOMEM */
} else {
set_port_control_flags(port, PORT_CONTROL_FLAG_BINARY);
data->driver_data = NULL;
data->bin = NULL;
data->port = port;
data->pdl = driver_pdl_create(port);
if(WXE_DRV_PORT == 0) {
for(; *buff != 32; buff++);
buff++;
erl_wx_privdir = strdup(buff);
WXE_DRV_PORT = port;
wxe_master = data;
if(!(start_native_gui(data) == 1))
return(ERL_DRV_ERROR_GENERAL); /* ENOMEM */
} else {
meta_command(CREATE_PORT,data);
}
return (ErlDrvData) data;
}
}
static void
wxe_driver_stop(ErlDrvData handle)
{
wxe_data *sd = ((wxe_data *)handle);
if(sd->port != WXE_DRV_PORT) {
// fprintf(stderr, "%s:%d: STOP \r\n", __FILE__,__LINE__);
meta_command(DELETE_PORT,sd);
free(handle);
}
}
static void
wxe_driver_unload(void)
{
// fprintf(stderr, "%s:%d: UNLOAD \r\n", __FILE__,__LINE__);
stop_native_gui(wxe_master);
unload_native_gui();
free(wxe_master);
wxe_master = NULL;
}
static int
wxe_driver_control(ErlDrvData handle, unsigned op,
char* buf, int count, char** res, int res_size)
{
wxe_data *sd = ((wxe_data *)handle);
push_command(op,buf,count,sd);
return 0;
}
static int wxe_driver_call(ErlDrvData handle, unsigned int command,
char *buf, int len, char **res, int rlen, unsigned int *flags)
{
wxe_data *sd = ((wxe_data *)handle);
if(command == WXE_DEBUG_DRIVER) {
if(*buf)
wxe_debug = 1;
else
wxe_debug = 0;
} else {
meta_command(PING_PORT,sd);
}
if (len > rlen)
*res = driver_alloc(len);
memcpy((void *) *res, (void *) buf, len);
return len;
}
void wxe_process_died(ErlDrvData handle, ErlDrvMonitor *monitor)
{
/* Callback is active for the dead process */
wxe_data *sd = ((wxe_data *)handle);
push_command(WXE_CB_RETURN,NULL,0,sd);
/* ErlDrvTermData pid; */
/* pid = driver_get_monitored_process(sd->port, monitor); */
/* fprintf(stderr, "Process died %d \r\n", (int) pid); */
}
static void
standard_outputv(ErlDrvData drv_data, ErlIOVec* ev)
{
wxe_data* sd = (wxe_data *) drv_data;
WXEBinRef * binref;
ErlDrvBinary* bin;
if(ev->vsize == 2) {
binref = driver_alloc(sizeof(WXEBinRef));
binref->base = ev->iov[1].iov_base;
binref->size = ev->iov[1].iov_len;
binref->from = driver_caller(sd->port);
bin = ev->binv[1];
driver_binary_inc_refc(bin); /* Otherwise it could get deallocated */
binref->bin = bin;
binref->next = sd->bin;
sd->bin = binref;
} else { /* Empty binary (becomes NULL) */
binref = driver_alloc(sizeof(WXEBinRef));
binref->base = NULL;
binref->size = 0;
binref->from = driver_caller(sd->port);
binref->bin = NULL;
binref->next = sd->bin;
sd->bin = binref;
}
}
