remotectl.c
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/*
* "Software pw3270, desenvolvido com base nos códigos fontes do WC3270 e X3270
* (Paul Mattes Paul.Mattes@usa.net), de emulação de terminal 3270 para acesso a
* aplicativos mainframe. Registro no INPI sob o nome G3270. Registro no INPI sob o nome G3270.
*
* Copyright (C) <2008> <Banco do Brasil S.A.>
*
* Este programa é software livre. Você pode redistribuí-lo e/ou modificá-lo sob
* os termos da GPL v.2 - Licença Pública Geral GNU, conforme publicado pela
* Free Software Foundation.
*
* Este programa é distribuído na expectativa de ser útil, mas SEM QUALQUER
* GARANTIA; sem mesmo a garantia implícita de COMERCIALIZAÇÃO ou de ADEQUAÇÃO
* A QUALQUER PROPÓSITO EM PARTICULAR. Consulte a Licença Pública Geral GNU para
* obter mais detalhes.
*
* Você deve ter recebido uma cópia da Licença Pública Geral GNU junto com este
* programa; se não, escreva para a Free Software Foundation, Inc., 51 Franklin
* St, Fifth Floor, Boston, MA 02110-1301 USA
*
* Este programa está nomeado como remotectl.c e possui - linhas de código.
*
* Contatos:
*
* perry.werneck@gmail.com (Alexandre Perry de Souza Werneck)
* erico.mendonca@gmail.com (Erico Mascarenhas Mendonça)
*
* Agradecimento:
*
* Hélio Passos
*
*/
#include "remotectl.h"
#include <pw3270.h>
#include <pw3270/plugin.h>
#include <pw3270/v3270.h>
#include <lib3270/actions.h>
#include <errno.h>
#include <string.h>
#ifndef ETIMEDOUT
#define ETIMEDOUT 1238
#endif // ETIMEDOUT
/*--[ Globals ]--------------------------------------------------------------------------------------*/
static const gchar control_char = '@';
/*--[ Implement ]------------------------------------------------------------------------------------*/
#ifdef WIN32
void popup_lasterror(const gchar *fmt, ...)
{
char buffer[4096];
va_list arg_ptr;
int sz;
DWORD errcode = GetLastError();
char *ptr;
LPVOID lpMsgBuf = 0;
FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |FORMAT_MESSAGE_IGNORE_INSERTS, NULL, errcode, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR) &lpMsgBuf, 0, NULL);
for(ptr=lpMsgBuf;*ptr && *ptr != '\n';ptr++);
*ptr = 0;
va_start(arg_ptr, fmt);
vsnprintf(buffer,4095,fmt,arg_ptr);
va_end(arg_ptr);
sz = strlen(buffer);
snprintf(buffer+sz,4096-sz,": %s\n(rc=%d)",lpMsgBuf,(int) errcode);
printf("%s\n",buffer);
#ifdef DEBUG
fprintf(stderr,"%s\n",buffer);
fflush(stderr);
#endif
LocalFree(lpMsgBuf);
}
#endif // WIN32
LIB3270_EXPORT int pw3270_plugin_init(GtkWidget *window)
{
#ifdef WIN32
char id;
for(id='A';id < 'Z';id++)
{
gchar * pipename = g_strdup_printf("\\\\.\\pipe\\%s%c",pw3270_get_session_name(window),id);
HANDLE hPipe = CreateNamedPipe( TEXT(pipename), // pipe name
PIPE_ACCESS_DUPLEX | // read/write access
FILE_FLAG_OVERLAPPED, // overlapped mode
PIPE_TYPE_MESSAGE | // pipe type
PIPE_READMODE_MESSAGE | // pipe mode
PIPE_WAIT, // blocking mode
1, // number of instances
PIPE_BUFFER_LENGTH, // output buffer size
PIPE_BUFFER_LENGTH, // input buffer size
NMPWAIT_USE_DEFAULT_WAIT, // client time-out
NULL); // default security attributes
trace("%s = %p",pipename,hPipe);
g_free(pipename);
if(hPipe != INVALID_HANDLE_VALUE)
{
gchar *session = g_strdup_printf("%s:%c",pw3270_get_session_name(window),id);
pw3270_set_session_name(window,session);
g_free(session);
init_source_pipe(hPipe);
return 0;
}
}
popup_lasterror( "%s", _( "Can´t create remote control pipe" ));
return -1;
#else
#error Nao implementado
#endif // WIN32
return 0;
}
LIB3270_EXPORT int pw3270_plugin_deinit(GtkWidget *window)
{
#ifdef WIN32
#else
#error Nao implementado
#endif // WIN32
set_active(FALSE);
return 0;
}
static void cmd_connectps(QUERY *qry)
{
g_message("%s","HLLAPI ConnectPS request received");
request_status(qry,v3270_set_script(pw3270_get_terminal_widget(NULL),'H',TRUE));
}
static void cmd_disconnectps(QUERY *qry)
{
g_message("%s","HLLAPI DisconnectPS request received");
request_status(qry,0);
}
static void cmd_getrevision(QUERY *qry)
{
request_complete(qry,0,lib3270_get_revision());
}
static void cmd_setcursor(QUERY *qry)
{
int rc = ENOTCONN;
if(lib3270_connected(qry->hSession))
{
trace("%s: pos=%d row=%d col=%d",__FUNCTION__,rc,rc/80,rc%80);
lib3270_set_cursor_address(qry->hSession,qry->pos -1);
rc = 0;
}
request_status(qry,rc);
}
static void cmd_sendstring(QUERY *qry)
{
gchar * text;
GError * error = NULL;
gsize bytes_read;
gsize bytes_written;
const gchar * charset;
if(!lib3270_connected(qry->hSession))
{
request_status(qry,ENOTCONN);
return;
}
g_get_charset(&charset);
text = g_convert(qry->text,qry->length,lib3270_get_charset(qry->hSession),charset,&bytes_read,&bytes_written,&error);
if(text)
{
int rc = 0;
if(strchr(text,control_char))
{
// Convert control char
gchar * buffer = text;
char * ptr;
for(ptr = strchr(text,control_char);ptr;ptr = strchr(buffer,control_char))
{
*(ptr++) = 0;
lib3270_emulate_input(qry->hSession,buffer,-1,0);
switch(*(ptr++))
{
case 'P': // Print
rc = pw3270_print(pw3270_get_terminal_widget(NULL), NULL, GTK_PRINT_OPERATION_ACTION_PRINT, PW3270_SRC_ALL);
break;
case 'E': // Enter
lib3270_enter(qry->hSession);
break;
case 'F': // Erase EOF
lib3270_eraseeof(qry->hSession);
break;
case '1': // PF1
lib3270_pfkey(qry->hSession,1);
break;
case '2': // PF2
lib3270_pfkey(qry->hSession,2);
break;
case '3': // PF3
lib3270_pfkey(qry->hSession,3);
break;
case '4': // PF4
lib3270_pfkey(qry->hSession,4);
break;
case '5': // PF5
lib3270_pfkey(qry->hSession,5);
break;
case '6': // PF6
lib3270_pfkey(qry->hSession,6);
break;
case '7': // PF7
lib3270_pfkey(qry->hSession,7);
break;
case '8': // PF8
lib3270_pfkey(qry->hSession,8);
break;
case '9': // PF9
lib3270_pfkey(qry->hSession,9);
break;
case 'a': // PF10
lib3270_pfkey(qry->hSession,10);
break;
case 'b': // PF11
lib3270_pfkey(qry->hSession,11);
break;
case 'c': // PF12
lib3270_pfkey(qry->hSession,12);
break;
}
}
lib3270_emulate_input(qry->hSession,buffer,-1,0);
}
else
{
lib3270_emulate_input(qry->hSession,text,strlen(text),0);
}
g_free(text);
request_status(qry,rc);
return;
}
request_complete(qry, error->code, error->message);
g_error_free(error);
}
struct wait
{
QUERY * qry;
time_t end;
};
static gboolean do_wait(struct wait *w)
{
if(lib3270_get_program_message(w->qry->hSession) == LIB3270_MESSAGE_NONE)
{
request_status(w->qry,0);
return FALSE;
}
if(time(0) > w->end)
{
trace("%s: TIMEOUT",__FUNCTION__);
request_status(w->qry,ETIMEDOUT);
return FALSE;
}
return TRUE;
}
static void cmd_wait(QUERY *qry)
{
struct wait *w;
if(lib3270_get_program_message(qry->hSession) == LIB3270_MESSAGE_NONE)
{
request_status(qry,0);
return;
}
w = g_malloc0(sizeof(struct wait));
w->qry = qry;
w->end = time(0)+pw3270_get_integer(pw3270_get_toplevel(),"hllapi","wait",2);
g_timeout_add_full(G_PRIORITY_DEFAULT, (guint) 300, (GSourceFunc) do_wait, w, g_free);
}
static void cmd_copypstostr(QUERY *qry)
{
int rows;
int cols;
unsigned short * attr;
unsigned char * text;
int rc;
unsigned char * buffer;
size_t length;
if(!lib3270_connected(qry->hSession))
{
request_status(qry,ENOTCONN);
return;
}
lib3270_get_screen_size(qry->hSession,&rows,&cols);
if(qry->pos < 1 || (qry->pos+qry->length) >= (rows*cols))
{
request_status(qry,EINVAL);
return;
}
qry->pos--;
length = (qry->length * sizeof(unsigned short)) + qry->length + 2;
text = buffer = g_malloc0(length+1);
attr = (unsigned short *) (text+qry->length+1);
trace("%s: pos=%d length=%d",__FUNCTION__,qry->pos,qry->length);
rc = lib3270_get_contents(qry->hSession,qry->pos,qry->pos+(qry->length-1),text,attr);
if(rc)
{
request_status(qry,rc);
}
else
{
const gchar * charset;
gchar * local;
gsize bytes_read;
gsize bytes_written;
GError * error = NULL;
trace("Text: [%s]",text);
g_get_charset(&charset);
local = g_convert((const gchar *) text,-1,charset,lib3270_get_charset(qry->hSession),&bytes_read,&bytes_written,&error);
if(!local)
{
request_complete(qry,error->code,error->message);
g_error_free(error);
}
else
{
strncpy((char *) text,(const char *) local,qry->length);
trace("response: [%s] len=%d",buffer,length);
request_buffer(qry,0,length,buffer);
g_free(local);
}
}
g_free(buffer);
}
static void cmd_querycursor(QUERY *qry)
{
request_value(qry,0,lib3270_get_cursor_address(qry->hSession));
}
void enqueue_request(QUERY *qry)
{
static const struct _cmd
{
int cmd;
void (*exec)(QUERY *qry);
} cmd[] =
{
{ HLLAPI_CMD_CONNECTPS, cmd_connectps }, // 1
{ HLLAPI_CMD_DISCONNECTPS, cmd_disconnectps }, // 2
{ HLLAPI_CMD_INPUTSTRING, cmd_sendstring }, // 3
{ HLLAPI_CMD_WAIT, cmd_wait }, // 4
// { HLLAPI_CMD_COPYPS, }, // 5
// { HLLAPI_CMD_SEARCHPS, }, // 6
{ HLLAPI_CMD_QUERYCURSOR, cmd_querycursor }, // 7
{ HLLAPI_CMD_COPYPSTOSTR, cmd_copypstostr }, // 8
// { HLLAPI_CMD_COPYSTRTOPS }, // 15
{ HLLAPI_CMD_SETCURSOR, cmd_setcursor }, // 40
// { HLLAPI_CMD_SENDFILE }, // 90
// { HLLAPI_CMD_RECEIVEFILE },
{ HLLAPI_CMD_GETREVISION, cmd_getrevision },
};
int f;
trace("HLLAPI function %d",(int) qry->cmd);
qry->hSession = lib3270_get_default_session_handle();
for(f=0;f<G_N_ELEMENTS(cmd);f++)
{
if(cmd[f].cmd == qry->cmd)
{
cmd[f].exec(qry);
return;
}
}
g_warning("Unexpected HLLAPI function %d",(int) qry->cmd);
request_status(qry,EINVAL);
}
G_GNUC_INTERNAL void set_active(gboolean on)
{
v3270_set_script(pw3270_get_terminal_widget(NULL),'H',on);
}