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keytable.c
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keytable.c
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/* keytable.c - This program allows checking/replacing keys at IR
Copyright (C) 2006-2010 Mauro Carvalho Chehab
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, version 2 of the License.
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.
*/
#ifdef ANDROID
#include <android-config.h>
#include <getopt.h>
#else
#include <config.h>
#include <argp.h>
#endif
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <linux/input.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <dirent.h>
#include <stdbool.h>
#include "parse.h"
#ifdef ENABLE_NLS
# define _(string) gettext(string)
# include "gettext.h"
# include <locale.h>
# include <langinfo.h>
# include <iconv.h>
#else
# define _(string) string
#endif
# define N_(string) string
static const char doc[] = {
"\nAllows get/set IR keycode/scancode tables\n"
"You need to have read permissions on /dev/input for the program to work\n"
"\nOn the options below, the arguments are:\n"
" DEV - the /dev/input/event* device to control\n"
" SYSDEV - the ir class as found at /sys/class/rc\n"
" TABLE - a file with a set of scancode=keycode value pairs\n"
" SCANKEY - a set of scancode1=keycode1,scancode2=keycode2.. value pairs\n"
" PROTOCOL - protocol name (nec, rc-5, rc-6, jvc, sony, sanyo, rc-5-sz, lirc,\n"
" sharp, mce_kbd, xmp, other, all) to be enabled\n"
" DELAY - Delay before repeating a keystroke\n"
" PERIOD - Period to repeat a keystroke\n"
" CFGFILE - configuration file that associates a driver/table name with a keymap file\n"
"\nOptions can be combined together.\n\n"
" -a, --auto-load=CFGFILE Auto-load a table, based on a configuration file.\n"
" Only works with sysdev.\n"
" -c, --clear clears the old table\n"
" -d, --device=DEV ir device to control\n"
" -D, --delay=DELAY Sets the delay before repeating a keystroke\n"
" -k, --set-key=SCANKEY Change scan/key pairs\n"
" -p, --protocol=PROTOCOL Protocol to enable (the other ones will be\n"
" disabled). To enable more than one, use the option\n"
" more than one time\n"
" -P, --period=PERIOD Sets the period to repeat a keystroke\n"
" -r, --read reads the current scancode/keycode table\n"
" -s, --sysdev=SYSDEV ir class device to control\n"
" -t, --test test if IR is generating events\n"
" -v, --verbose enables debug messages\n"
" -w, --write=TABLE write (adds) the scancodes to the device\n"
" scancode/keycode table from an specified file\n"
" -?, --help Give this help list\n"
" --usage Give a short usage message\n"
" -V, --version Print program version\n"
};
static const char args_doc[] = {
"--device [/dev/input/event* device]\n"
"--sysdev [ir class (f. ex. rc0)]\n"
"[for using the rc0 sysdev]"};
struct input_keymap_entry_v2 {
#define KEYMAP_BY_INDEX (1 << 0)
u_int8_t flags;
u_int8_t len;
u_int16_t index;
u_int32_t keycode;
u_int8_t scancode[32];
};
#ifndef EVIOCGKEYCODE_V2
#define EVIOCGKEYCODE_V2 _IOR('E', 0x04, struct input_keymap_entry_v2)
#define EVIOCSKEYCODE_V2 _IOW('E', 0x04, struct input_keymap_entry_v2)
#endif
struct keytable_entry {
u_int32_t scancode;
u_int32_t keycode;
struct keytable_entry *next;
};
struct keytable_entry *keytable = NULL;
struct uevents {
char *key;
char *value;
struct uevents *next;
};
struct cfgfile {
char *driver;
char *table;
char *fname;
struct cfgfile *next;
};
struct sysfs_names {
char *name;
struct sysfs_names *next;
};
enum rc_type {
UNKNOWN_TYPE,
SOFTWARE_DECODER,
HARDWARE_DECODER,
};
enum sysfs_ver {
VERSION_1, /* has nodes protocol, enabled */
VERSION_2, /* has node protocols */
};
enum sysfs_protocols {
SYSFS_UNKNOWN = (1 << 0),
SYSFS_OTHER = (1 << 1),
SYSFS_LIRC = (1 << 2),
SYSFS_RC5 = (1 << 3),
SYSFS_RC5_SZ = (1 << 4),
SYSFS_JVC = (1 << 5),
SYSFS_SONY = (1 << 6),
SYSFS_NEC = (1 << 7),
SYSFS_SANYO = (1 << 8),
SYSFS_MCE_KBD = (1 << 9),
SYSFS_RC6 = (1 << 10),
SYSFS_SHARP = (1 << 11),
SYSFS_XMP = (1 << 12),
SYSFS_INVALID = 0,
};
struct protocol_map_entry {
const char *name;
const char *sysfs1_name;
enum sysfs_protocols sysfs_protocol;
};
const struct protocol_map_entry protocol_map[] = {
{ "unknown", NULL, SYSFS_UNKNOWN },
{ "other", NULL, SYSFS_OTHER },
{ "lirc", NULL, SYSFS_LIRC },
{ "rc-5", "/rc5_decoder", SYSFS_RC5 },
{ "rc5", NULL, SYSFS_RC5 },
{ "rc-5x", NULL, SYSFS_INVALID },
{ "rc5x", NULL, SYSFS_INVALID },
{ "jvc", "/jvc_decoder", SYSFS_JVC },
{ "sony", "/sony_decoder",SYSFS_SONY },
{ "sony12", NULL, SYSFS_INVALID },
{ "sony15", NULL, SYSFS_INVALID },
{ "sony20", NULL, SYSFS_INVALID },
{ "nec", "/nec_decoder", SYSFS_NEC },
{ "sanyo", NULL, SYSFS_SANYO },
{ "mce-kbd", NULL, SYSFS_MCE_KBD },
{ "mce_kbd", NULL, SYSFS_MCE_KBD },
{ "rc-6", "/rc6_decoder", SYSFS_RC6 },
{ "rc6", NULL, SYSFS_RC6 },
{ "rc-6-0", NULL, SYSFS_INVALID },
{ "rc-6-6a-20", NULL, SYSFS_INVALID },
{ "rc-6-6a-24", NULL, SYSFS_INVALID },
{ "rc-6-6a-32", NULL, SYSFS_INVALID },
{ "rc-6-mce", NULL, SYSFS_INVALID },
{ "sharp", NULL, SYSFS_SHARP },
{ "xmp", "/xmp_decoder", SYSFS_XMP },
{ NULL, NULL, SYSFS_INVALID },
};
static enum sysfs_protocols parse_sysfs_protocol(const char *name, bool all_allowed)
{
const struct protocol_map_entry *pme;
if (!name)
return SYSFS_INVALID;
if (all_allowed && !strcasecmp(name, "all"))
return ~0;
for (pme = protocol_map; pme->name; pme++) {
if (!strcasecmp(name, pme->name))
return pme->sysfs_protocol;
}
return SYSFS_INVALID;
}
static void write_sysfs_protocols(enum sysfs_protocols protocols, FILE *fp, const char *fmt)
{
const struct protocol_map_entry *pme;
for (pme = protocol_map; pme->name; pme++) {
if (!(protocols & pme->sysfs_protocol))
continue;
fprintf(fp, fmt, pme->name);
protocols &= ~pme->sysfs_protocol;
}
}
static int parse_code(char *string)
{
struct parse_event *p;
for (p = key_events; p->name != NULL; p++) {
if (!strcasecmp(p->name, string))
return p->value;
}
return -1;
}
const char *argp_program_version = "IR keytable control version " V4L_UTILS_VERSION;
const char *argp_program_bug_address = "Mauro Carvalho Chehab <[email protected]>";
static int print_version = 0;
static const struct option long_options[] = {
{"verbose", no_argument, 0, 'v'},
{"clear", no_argument, 0, 'c'},
{"sysdev", required_argument, 0, 's'},
{"test", no_argument, 0, 't'},
{"device", required_argument, 0, 'd'},
{"read", no_argument, 0, 'r'},
{"write", required_argument, 0, 'w'},
{"set-key",required_argument, 0, 'k'},
{"protocol",required_argument, 0, 'p'},
{"delay",required_argument, 0, 'D'},
{"period", required_argument, 0, 'P'},
{"auto-load",required_argument, 0, 'a'},
{"help",no_argument, 0, '?'},
{"usage", no_argument, 0, 'u'},
{"version", no_argument, 0,'V'},
{0, 0, 0, 0}
};
/* Static vars to store the parameters */
static char *devclass = "rc0";
static char *devicename = NULL;
static int readtable = 0;
static int clear = 0;
static int debug = 0;
static int test = 0;
static int delay = 0;
static int period = 0;
static enum sysfs_protocols ch_proto = 0;
struct cfgfile cfg = {
NULL, NULL, NULL, NULL
};
/*
* Stores the input layer protocol version
*/
static int input_protocol_version = 0;
/*
* Values that are read only via sysfs node
*/
static int sysfs = 0;
struct rc_device {
char *sysfs_name; /* Device sysfs node name */
char *input_name; /* Input device file name */
char *drv_name; /* Kernel driver that implements it */
char *keytable_name; /* Keycode table name */
enum sysfs_ver version; /* sysfs version */
enum rc_type type; /* Software (raw) or hardware decoder */
enum sysfs_protocols supported, current; /* Current and supported IR protocols */
};
static int parse_keyfile(char *fname, char **table)
{
FILE *fin;
int value, line = 0;
char *scancode, *keycode, s[2048];
struct keytable_entry *ke;
*table = NULL;
if (debug)
fprintf(stderr, _("Parsing %s keycode file\n"), fname);
fin = fopen(fname, "r");
if (!fin) {
return errno;
}
while (fgets(s, sizeof(s), fin)) {
char *p = s;
line++;
while (*p == ' ' || *p == '\t')
p++;
if (line==1 && p[0] == '#') {
p++;
p = strtok(p, "\n\t =:");
do {
if (!p)
goto err_einval;
if (!strcmp(p, "table")) {
p = strtok(NULL,"\n, ");
if (!p)
goto err_einval;
*table = malloc(strlen(p) + 1);
strcpy(*table, p);
} else if (!strcmp(p, "type")) {
p = strtok(NULL, " ,\n");
if (!p)
goto err_einval;
while (p) {
enum sysfs_protocols protocol;
protocol = parse_sysfs_protocol(p, false);
if (protocol == SYSFS_INVALID) {
fprintf(stderr, _("Protocol %s invalid\n"), p);
goto err_einval;
}
ch_proto |= protocol;
p = strtok(NULL, " ,\n");
}
} else {
goto err_einval;
}
p = strtok(NULL, "\n\t =:");
} while (p);
continue;
}
if (*p == '\n' || *p == '#')
continue;
scancode = strtok(p, "\n\t =:");
if (!scancode)
goto err_einval;
if (!strcasecmp(scancode, "scancode")) {
scancode = strtok(NULL, "\n\t =:");
if (!scancode)
goto err_einval;
}
keycode = strtok(NULL, "\n\t =:(");
if (!keycode)
goto err_einval;
if (debug)
fprintf(stderr, _("parsing %s=%s:"), scancode, keycode);
value = parse_code(keycode);
if (debug)
fprintf(stderr, _("\tvalue=%d\n"), value);
if (value == -1) {
value = strtol(keycode, NULL, 0);
if (errno)
perror(_("value"));
}
ke = calloc(1, sizeof(*ke));
if (!ke) {
perror("parse_keyfile");
return ENOMEM;
}
ke->scancode = strtoul(scancode, NULL, 0);
ke->keycode = value;
ke->next = keytable;
keytable = ke;
}
fclose(fin);
return 0;
err_einval:
fprintf(stderr, _("Invalid parameter on line %d of %s\n"),
line, fname);
return EINVAL;
}
struct cfgfile *nextcfg = &cfg;
static int parse_cfgfile(char *fname)
{
FILE *fin;
int line = 0;
char s[2048];
char *driver, *table, *filename;
if (debug)
fprintf(stderr, _("Parsing %s config file\n"), fname);
fin = fopen(fname, "r");
if (!fin) {
perror(_("opening keycode file"));
return errno;
}
while (fgets(s, sizeof(s), fin)) {
char *p = s;
line++;
while (*p == ' ' || *p == '\t')
p++;
if (*p == '\n' || *p == '#')
continue;
driver = strtok(p, "\t ");
if (!driver)
goto err_einval;
table = strtok(NULL, "\t ");
if (!table)
goto err_einval;
filename = strtok(NULL, "\t #\n");
if (!filename)
goto err_einval;
if (debug)
fprintf(stderr, _("Driver %s, Table %s => file %s\n"),
driver, table, filename);
nextcfg->driver = malloc(strlen(driver) + 1);
strcpy(nextcfg->driver, driver);
nextcfg->table = malloc(strlen(table) + 1);
strcpy(nextcfg->table, table);
nextcfg->fname = malloc(strlen(filename) + 1);
strcpy(nextcfg->fname, filename);
nextcfg->next = calloc(1, sizeof(*nextcfg));
if (!nextcfg->next) {
perror("parse_cfgfile");
return ENOMEM;
}
nextcfg = nextcfg->next;
}
fclose(fin);
return 0;
err_einval:
fprintf(stderr, _("Invalid parameter on line %d of %s\n"),
line, fname);
return EINVAL;
}
static int parse_opt(int argc, char* argv[])
{
char *p;
long key;
int rc;
int c;
int digit_optind = 0;
while (1) {
int this_option_optind = optind ? optind : 1;
int option_index = 0;
c = getopt_long(argc, argv, "vtcD:P:Ad:s:rw:a:k:p:d:f:V",long_options, &option_index);
if (c == -1)
break;
switch (c) {
case 'v':
debug++;
break;
case 't':
test++;
break;
case 'c':
clear++;
break;
case 'D':
delay = atoi(optarg);
break;
case 'P':
period = atoi(optarg);
break;
case 'd':
devicename = optarg;
break;
case 's':
devclass = optarg;
break;
case 'r':
readtable++;
break;
case 'w': {
char *name = NULL;
rc = parse_keyfile(optarg, &name);
if (rc)
goto err_inval;
if (name)
fprintf(stderr, _("Read %s table\n"), name);
break;
}
case 'a': {
rc = parse_cfgfile(optarg);
if (rc)
goto err_inval;
break;
}
case 'k':
p = strtok(optarg, ":=");
do {
struct keytable_entry *ke;
if (!p)
goto err_inval;
ke = calloc(1, sizeof(*ke));
if (!ke) {
perror(_("No memory!\n"));
return ENOMEM;
}
ke->scancode = strtoul(p, NULL, 0);
if (errno) {
free(ke);
goto err_inval;
}
p = strtok(NULL, ",;");
if (!p) {
free(ke);
goto err_inval;
}
key = parse_code(p);
if (key == -1) {
key = strtol(p, NULL, 0);
if (errno) {
free(ke);
goto err_inval;
}
}
ke->keycode = key;
if (debug)
fprintf(stderr, _("scancode 0x%04x=%u\n"),
ke->scancode, ke->keycode);
ke->next = keytable;
keytable = ke;
p = strtok(NULL, ":=");
} while (p);
break;
case 'p':
for (p = strtok(optarg, ",;"); p; p = strtok(NULL, ",;")) {
enum sysfs_protocols protocol;
protocol = parse_sysfs_protocol(p, true);
if (protocol == SYSFS_INVALID)
goto err_inval;
ch_proto |= protocol;
}
break;
case '?':
fprintf(stderr, doc);
fprintf(stderr, _("\nReport bugs to %s.\n"), argp_program_bug_address);
exit(0);
case 'V':
fprintf (stderr, "%s\n", argp_program_version);
exit(0);
case -3:
exit(0);
default:
return E2BIG;
}
}
return 0;
err_inval:
fprintf(stderr, _("Invalid parameter(s)\n"));
return E2BIG;
}
static void prtcode(int *codes)
{
struct parse_event *p;
for (p = key_events; p->name != NULL; p++) {
if (p->value == (unsigned)codes[1]) {
printf(_("scancode 0x%04x = %s (0x%02x)\n"), codes[0], p->name, codes[1]);
return;
}
}
if (isprint (codes[1]))
printf(_("scancode 0x%04x = '%c' (0x%02x)\n"), codes[0], codes[1], codes[1]);
else
printf(_("scancode 0x%04x = 0x%02x\n"), codes[0], codes[1]);
}
static void free_names(struct sysfs_names *names)
{
struct sysfs_names *old;
do {
old = names;
names = names->next;
if (old->name)
free(old->name);
free(old);
} while (names);
}
static struct sysfs_names *seek_sysfs_dir(char *dname, char *node_name)
{
DIR *dir;
struct dirent *entry;
struct sysfs_names *names, *cur_name;
names = calloc(sizeof(*names), 1);
cur_name = names;
dir = opendir(dname);
if (!dir) {
perror(dname);
return NULL;
}
entry = readdir(dir);
while (entry) {
if (!node_name || !strncmp(entry->d_name, node_name, strlen(node_name))) {
cur_name->name = malloc(strlen(dname) + strlen(entry->d_name) + 2);
if (!cur_name->name)
goto err;
strcpy(cur_name->name, dname);
strcat(cur_name->name, entry->d_name);
if (node_name)
strcat(cur_name->name, "/");
cur_name->next = calloc(sizeof(*cur_name), 1);
if (!cur_name->next)
goto err;
cur_name = cur_name->next;
}
entry = readdir(dir);
}
closedir(dir);
if (names == cur_name) {
fprintf(stderr, _("Couldn't find any node at %s%s*.\n"),
dname, node_name);
free (names);
names = NULL;
}
return names;
err:
perror(_("Seek dir"));
free_names(names);
return NULL;
}
static void free_uevent(struct uevents *uevent)
{
struct uevents *old;
do {
old = uevent;
uevent = uevent->next;
if (old->key)
free(old->key);
if (old->value)
free(old->value);
free(old);
} while (uevent);
}
static struct uevents *read_sysfs_uevents(char *dname)
{
FILE *fp;
struct uevents *next, *uevent;
char *event = "uevent", *file, s[4096];
next = uevent = calloc(1, sizeof(*uevent));
file = malloc(strlen(dname) + strlen(event) + 1);
strcpy(file, dname);
strcat(file, event);
if (debug)
fprintf(stderr, _("Parsing uevent %s\n"), file);
fp = fopen(file, "r");
if (!fp) {
perror(file);
free(file);
return NULL;
}
while (fgets(s, sizeof(s), fp)) {
char *p = strtok(s, "=");
if (!p)
continue;
next->key = malloc(strlen(p) + 1);
if (!next->key) {
perror("next->key");
free(file);
free_uevent(uevent);
return NULL;
}
strcpy(next->key, p);
p = strtok(NULL, "\n");
if (!p) {
fprintf(stderr, _("Error on uevent information\n"));
fclose(fp);
free(file);
free_uevent(uevent);
return NULL;
}
next->value = malloc(strlen(p) + 1);
if (!next->value) {
perror("next->value");
free(file);
free_uevent(uevent);
return NULL;
}
strcpy(next->value, p);
if (debug)
fprintf(stderr, _("%s uevent %s=%s\n"), file, next->key, next->value);
next->next = calloc(1, sizeof(*next));
if (!next->next) {
perror("next->next");
free(file);
free_uevent(uevent);
return NULL;
}
next = next->next;
}
fclose(fp);
free(file);
return uevent;
}
static struct sysfs_names *find_device(char *name)
{
char dname[256];
char *input = "rc";
static struct sysfs_names *names, *cur;
/*
* Get event sysfs node
*/
snprintf(dname, sizeof(dname), "/sys/class/rc/");
names = seek_sysfs_dir(dname, input);
if (!names)
return NULL;
if (debug) {
for (cur = names; cur->next; cur = cur->next) {
fprintf(stderr, _("Found device %s\n"), cur->name);
}
}
if (name) {
static struct sysfs_names *tmp;
char *p, *n;
int found = 0;
n = malloc(strlen(name) + 2);
strcpy(n, name);
strcat(n,"/");
for (cur = names; cur->next; cur = cur->next) {
if (cur->name) {
p = cur->name + strlen(dname);
if (p && !strcmp(p, n)) {
found = 1;
break;
}
}
}
free(n);
if (!found) {
free_names(names);
fprintf(stderr, _("Not found device %s\n"), name);
return NULL;
}
tmp = calloc(sizeof(*names), 1);
tmp->name = cur->name;
cur->name = NULL;
free_names(names);
return tmp;
}
return names;
}
static enum sysfs_protocols v1_get_hw_protocols(char *name)
{
FILE *fp;
char *p, buf[4096];
enum sysfs_protocols protocols = 0;
fp = fopen(name, "r");
if (!fp) {
perror(name);
return 0;
}
if (!fgets(buf, sizeof(buf), fp)) {
perror(name);
fclose(fp);
return 0;
}
for (p = strtok(buf, " \n"); p; p = strtok(NULL, " \n")) {
enum sysfs_protocols protocol;
if (debug)
fprintf(stderr, _("%s protocol %s\n"), name, p);
protocol = parse_sysfs_protocol(p, false);
if (protocol == SYSFS_INVALID)
protocol = SYSFS_OTHER;
protocols |= protocol;
}
fclose(fp);
return protocols;
}
static int v1_set_hw_protocols(struct rc_device *rc_dev)
{
FILE *fp;
char name[4096];
strcpy(name, rc_dev->sysfs_name);
strcat(name, "/protocol");
fp = fopen(name, "w");
if (!fp) {
perror(name);
return errno;
}
write_sysfs_protocols(rc_dev->current, fp, "%s ");
fprintf(fp, "\n");
fclose(fp);
return 0;
}
static int v1_get_sw_enabled_protocol(char *dirname)
{
FILE *fp;
char *p, buf[4096], name[512];
int rc;
strcpy(name, dirname);
strcat(name, "/enabled");
fp = fopen(name, "r");
if (!fp) {
perror(name);
return 0;
}
if (!fgets(buf, sizeof(buf), fp)) {
perror(name);
fclose(fp);
return 0;
}
if (fclose(fp)) {
perror(name);
return errno;
}
p = strtok(buf, " \n");
if (!p) {
fprintf(stderr, _("%s has invalid content: '%s'\n"), name, buf);
return 0;
}
rc = atoi(p);
if (debug)
fprintf(stderr, _("protocol %s is %s\n"),
name, rc? _("enabled") : _("disabled"));
if (atoi(p) == 1)
return 1;
return 0;
}
static int v1_set_sw_enabled_protocol(struct rc_device *rc_dev,
const char *dirname, int enabled)
{
FILE *fp;
char name[512];
strcpy(name, rc_dev->sysfs_name);
strcat(name, dirname);
strcat(name, "/enabled");
fp = fopen(name, "w");
if (!fp) {
perror(name);
return errno;
}
if (enabled)
fprintf(fp, "1");
else
fprintf(fp, "0");
if (fclose(fp)) {
perror(name);
return errno;
}
return 0;
}
static enum sysfs_protocols v2_get_protocols(struct rc_device *rc_dev, char *name)
{
FILE *fp;
char *p, buf[4096];
int enabled;
fp = fopen(name, "r");
if (!fp) {
perror(name);
return 0;
}
if (!fgets(buf, sizeof(buf), fp)) {
perror(name);
fclose(fp);
return 0;
}
for (p = strtok(buf, " \n"); p; p = strtok(NULL, " \n")) {
enum sysfs_protocols protocol;
if (*p == '[') {
enabled = 1;
p++;
p[strlen(p)-1] = '\0';
} else
enabled = 0;
if (debug)
fprintf(stderr, _("%s protocol %s (%s)\n"), name, p,
enabled? _("enabled") : _("disabled"));
protocol = parse_sysfs_protocol(p, false);
if (protocol == SYSFS_INVALID)
protocol = SYSFS_OTHER;
rc_dev->supported |= protocol;
if (enabled)
rc_dev->current |= protocol;
}
fclose(fp);