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/** \file server/drivers/lircin.c
* LCDd \c lirc input driver for LIRC infrared devices (http://www.lirc.org),
*/
/*
Copyright (C) 2000, Harald Klein
2002, Rene Wagner
[Merged some stuff from a different lircin driver, so:]
1999, David Glaude
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
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
*/
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <termios.h>
#include <fcntl.h>
#include <string.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/un.h>
#include <lirc/lirc_client.h>
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "lcd.h"
#include "lircin.h"
#include "report.h"
/** private data for the \c lirc driver */
typedef struct lircin_private_data {
char *lircrc; /**< path/name of the LIRC config file */
char *prog; /**< program identifier in LIRC config file */
int lircin_fd; /**< LIRC socket file handle */
struct lirc_config *lircin_irconfig; /**< LIRC config */
} PrivateData;
/* vars for the server core */
MODULE_EXPORT char *api_version = API_VERSION;
MODULE_EXPORT int stay_in_foreground = 0;
MODULE_EXPORT int supports_multiple = 0;
MODULE_EXPORT char *symbol_prefix = "lircin_";
/**
* Initialize the driver.
* \param drvthis Pointer to driver structure.
* \retval 0 Success.
* \retval <0 Error.
*/
MODULE_EXPORT int
lircin_init (Driver *drvthis)
{
char s[256] = "";
PrivateData *p;
/* Alocate and store private data */
p = (PrivateData *) malloc(sizeof(PrivateData));
if (p == NULL) {
report(RPT_ERR, "%s: Could not allocate private data", drvthis->name);
return -1;
}
if (drvthis->store_private_ptr(drvthis, p)) {
report(RPT_ERR, "%s: Could not store private data", drvthis->name);
return -1;
}
/* Initialise the PrivateData structure */
p->lircrc = NULL;
p->prog = NULL;
p->lircin_irconfig = NULL;
p->lircin_fd = -1;
/* READ CONFIG FILE:*/
/* Get location of lircrc to be used */
if (drvthis->config_get_string(drvthis->name, "lircrc", 0 , NULL) != NULL) {
strncpy(s, drvthis->config_get_string(drvthis->name, "lircrc", 0, ""), sizeof(s));
s[sizeof(s)-1] = '\0';
}
if (*s != '\0') {
p->lircrc = malloc(strlen(s) + 1);
if (p->lircrc == NULL) {
report(RPT_ERR, "%s: Could not allocate new memory", drvthis->name);
return -1;
}
strcpy(p->lircrc, s);
report(RPT_INFO,"%s: Using lircrc: %s", drvthis->name, p->lircrc);
}
else {
report(RPT_INFO,"%s: Using default lircrc: ~/.lircrc", drvthis->name);
}
/* Get program identifier "prog=..." to be used */
strncpy(s, drvthis->config_get_string(drvthis->name, "Prog", 0, LIRCIN_DEF_PROG), sizeof(s));
p->prog = malloc(strlen(s) + 1);
if (p->prog == NULL) {
report(RPT_ERR, "%s: Could not allocate new memory", drvthis->name);
return -1;
}
strcpy(p->prog, s);
report(RPT_INFO, "%s: Using prog: %s", drvthis->name, p->prog);
/* End of config file parsing */
/* open socket to lirc */
if (-1 == (p->lircin_fd = lirc_init(p->prog, LIRCIN_VERBOSELY))) {
report(RPT_ERR, "%s: Could not connect to lircd", drvthis->name);
lircin_close(drvthis);
return -1;
}
if (0 != lirc_readconfig(p->lircrc, &p->lircin_irconfig, NULL)) {
report(RPT_ERR, "%s: lirc_readconfig() failed", drvthis->name);
lircin_close(drvthis);
return -1;
}
/* socket shouldn't block lcdd */
if (fcntl(p->lircin_fd, F_SETFL, O_NONBLOCK) < 0){
report(RPT_ERR, "%s: Unable to change lircin_fd(%d) to O_NONBLOCK: %s",
drvthis->name, p->lircin_fd, strerror(errno));
lircin_close(drvthis);
return -1;
}
fcntl (p->lircin_fd, F_SETFD, FD_CLOEXEC);
report(RPT_DEBUG, "%s: init() done", drvthis->name);
return 0;
}
/**
* Close the driver (do necessary clean-up).
* \param drvthis Pointer to driver structure.
*/
MODULE_EXPORT void
lircin_close (Driver *drvthis)
{
PrivateData * p = drvthis->private_data;
if (p != NULL) {
if (p->lircrc != NULL)
free(p->lircrc);
p->lircrc = NULL;
if (p->prog != NULL)
free(p->prog);
p->prog = NULL;
if (p->lircin_irconfig != NULL)
lirc_freeconfig (p->lircin_irconfig);
p->lircin_irconfig = NULL;
if (p->lircin_fd >= 0) {
lirc_deinit ();
close (p->lircin_fd);
}
p->lircin_fd = -1;
free(p);
}
drvthis->store_private_ptr(drvthis, NULL);
}
/**
* Get key from the device.
* \param drvthis Pointer to driver structure.
* \return String representation of the key;
* \c NULL if nothing available / unmapped key.
*/
MODULE_EXPORT const char *
lircin_get_key (Driver *drvthis)
{
PrivateData * p = drvthis->private_data;
char *code = NULL, *cmd = NULL;
if ((lirc_nextcode(&code) == 0) && (code != NULL)) {
if ((lirc_code2char(p->lircin_irconfig,code,&cmd)==0) && (cmd!=NULL)) {
report(RPT_DEBUG, "%s: \"%s\"", drvthis->name, cmd);
}
free(code);
}
return cmd;
}
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