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empcd.c
1357 lines (1154 loc) · 31 KB
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empcd.c
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/***********************************************************
EMPCd - Event Music Player Client daemon
by Jeroen Massar <jeroen@massar.ch>
************************************************************
$Author: jeroen $
$Id: $
$Date: $
***********************************************************/
#include "empcd.h"
#define EMPCD_VERSION "2013.12.28"
#define EMPCD_VSTRING "empcd %s by Jeroen Massar <jeroen@massar.ch>\n"
/* MPD functions */
#include "support/mpc-0.12.2/src/libmpdclient.h"
#define MPD_HOST_DEFAULT "localhost"
#define MPD_PORT_DEFAULT "6600"
struct empcd_events events[100];
unsigned int maxevent = 0;
mpd_Connection *mpd = NULL;
unsigned int verbosity = 0, drop_uid = 0, drop_gid = 0;
bool daemonize = true;
bool running = true;
bool exclusive = true;
bool giveup = true;
bool nompd = false;
char *mpd_host = NULL, *mpd_port = NULL;
/* When we receive a signal, we abort */
static void handle_signal(int i);
static void handle_signal(int i)
{
running = false;
signal(i, &handle_signal);
}
static void doelogA(int level, int errnum, const char *fmt, va_list ap) ATTR_FORMAT(printf, 3, 0);
static void doelogA(int level, int errnum, const char *fmt, va_list ap)
{
char buf[8192];
int k;
unsigned int i;
if (level == LOG_DEBUG && verbosity < 1) return;
k = vsnprintf(buf, sizeof(buf), fmt, ap);
if (!snprintfok(k, sizeof(buf)))
{
snprintf(buf, sizeof(buf), "[Log line way too long: %u/%u bytes]\n", k, (unsigned int)sizeof(buf));
level = LOG_ERR;
}
/* Append errno description? */
if (errnum != 0)
{
i = strlen(buf);
if (i == 0) i = 1;
if (i < (sizeof(buf) - 10))
{
/* Add ": " overwriting the \n which has to be present */
buf[i-1] = ':';
buf[i] = ' ';
buf[i+1] = '\0';
errno = 0;
k = strerror_r(errnum, &buf[i+1], sizeof(buf) - (i+2));
if (k == 0)
{
i = strlen(buf);
k = snprintf(&buf[i], sizeof(buf)-i, " (errno %d)\n", errnum);
if (!snprintfok(k, sizeof(buf)-i))
{
/* Doesn't hurt when it doesn't fit, just terminate it */
buf[i] = '\0';
}
}
else
{
k = snprintf(&buf[i+1], sizeof(buf) - (i+2), " [unknown erro %u]\n", errnum);
if (!snprintfok(k, sizeof(buf)-i))
{
/* Just terminate if all is failing */
buf[i+1] = '\0';
}
}
}
}
if (daemonize)
{
syslog(LOG_LOCAL7 | level, "%s", buf);
}
else
{
FILE *out = (level == LOG_DEBUG || level == LOG_ERR ? stderr : stdout);
fprintf(out, "[%6s] ",
level == LOG_DEBUG ? "debug" :
(level == LOG_ERR ? "error" :
(level == LOG_WARNING ? "warn" :
(level == LOG_NOTICE ? "notice" :
(level == LOG_INFO ? "info" : "(!?)")))));
fprintf(out, "%s", buf);
}
}
static void doelog(int level, int errnum, const char *fmt, ...) ATTR_FORMAT(printf, 3, 4);
static void doelog(int level, int errnum, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
doelogA(level, errnum, fmt, ap);
va_end(ap);
}
static void dolog(int level, const char *fmt, ...) ATTR_FORMAT(printf, 2, 3);
static void dolog(int level, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
doelogA(level, 0, fmt, ap);
va_end(ap);
}
static mpd_Connection *empcd_setup(void);
static mpd_Connection *empcd_setup(void)
{
int iport;
char *test;
int password_len = 0;
int parsed_len = 0;
mpd_Connection *m = NULL;
if (nompd)
{
dolog(LOG_ERR, "MPD connection disabled\n");
return NULL;
}
if (!mpd_host || !mpd_port)
{
dolog(LOG_ERR, "Either MPD_HOST or MPD_PORT not configured\n");
return NULL;
}
iport = strtol(mpd_port, &test, 10);
if (iport <= 0 || test[0] != '\0')
{
dolog(LOG_ERR, "MPD_PORT \"%s\" is not a positive integer\n", mpd_port);
return NULL;
}
/* parse password and host */
test = strstr(mpd_host,"@");
password_len = test - mpd_host;
if (test) parsed_len++;
if (!test) password_len = 0;
if (test && password_len != 0) parsed_len += password_len;
m = mpd_newConnection(mpd_host + parsed_len, iport, 10);
if (!m) return NULL;
if (m->error)
{
dolog(LOG_ERR, "MPD Connection Error: %s\n", m->errorStr);
return NULL;
}
if (password_len)
{
char *pass = strdup(mpd_host);
pass[password_len] = '\0';
mpd_sendPasswordCommand(m, pass);
mpd_finishCommand(m);
free(pass);
if (m->error)
{
dolog(LOG_ERR, "MPD Authentication Error: %s\n", m->errorStr);
return NULL;
}
}
return m;
}
static bool mpd_check(void);
static bool mpd_check(void)
{
if (nompd) return true;
if (!mpd->error) return false;
/* Ignore timeouts */
if (mpd->error != MPD_ERROR_CONNCLOSED)
{
dolog(LOG_WARNING, "MPD error: %s\n", mpd->errorStr);
}
/* Don't reconnect for non-fatal errors */
if (mpd->error < 10 && mpd->error > 19)
{
return false;
}
/* Close the old connection */
mpd_closeConnection(mpd);
/* Setup a new connection */
mpd = empcd_setup();
if (!mpd)
{
dolog(LOG_ERR, "MPD Connection Lost, exiting\n");
exit(0);
}
return true;
}
static mpd_Status *empcd_status(void);
static mpd_Status *empcd_status(void)
{
int retry = 5;
mpd_Status *s = NULL;
if (nompd) return NULL;
while (retry > 0)
{
retry--;
mpd_sendStatusCommand(mpd);
if (mpd_check()) continue;
s = mpd_getStatus(mpd);
if (mpd_check()) continue;
mpd_finishCommand(mpd);
if (mpd_check()) continue;
break;
}
return s;
}
/********************************************************************/
static void f_exec(const char *arg, const char *args);
static void f_exec(const char *arg, const char *args)
{
if ((!arg || strlen(arg) == 0) && args)
{
dolog(LOG_WARNING, "f_exec requires '%s' as an argument, none given, ignoring\n", args);
return;
}
if (system(arg) < 0)
{
doelog(LOG_WARNING, errno, "f_exec failed to execute '%s'\n", arg);
}
}
static void f_quit(const char UNUSED *arg, const char UNUSED *args);
static void f_quit(const char UNUSED *arg, const char UNUSED *args)
{
running = false;
}
#define QUOTE(s) #s
#define STR(s) QUOTE(s)
#define F_CMDG(fn, f) \
static void f_##fn(const char *arg, const char *args); \
static void f_##fn(const char *arg, const char *args) \
{ \
int retries; \
\
if (nompd) \
{ \
dolog(LOG_INFO, "%s not executing as MPD is disabled (nompd)\n", STR(fn)); \
return; \
} \
\
if ((!arg || strlen(arg) == 0) && args) \
{ \
dolog(LOG_WARNING, "%s requires '%s' as an argument, none given, ignoring\n", #fn, args); \
return; \
} \
\
for (retries = 5; retries > 0; retries--) \
{ \
f; \
if (mpd_check()) continue; \
mpd_finishCommand(mpd); \
if (mpd_check()) continue; \
break; \
} \
}
/* G = Given argument, N = No Argument, A = 'arg' as argument */
#define F_CMDN(fn, f) F_CMDG(fn,f(mpd))
#define F_CMDA(fn, f) F_CMDG(fn,f(mpd, arg))
F_CMDN(next, mpd_sendNextCommand)
F_CMDN(prev, mpd_sendPrevCommand)
F_CMDN(stop, mpd_sendStopCommand)
F_CMDG(play, mpd_sendPlayCommand(mpd,-1))
F_CMDA(save, mpd_sendSaveCommand)
F_CMDA(load, mpd_sendLoadCommand)
F_CMDA(remove, mpd_sendRmCommand)
F_CMDN(clear, mpd_sendClearCommand)
static void f_volume(const char *arg, const char UNUSED *args);
static void f_volume(const char *arg, const char UNUSED *args)
{
int dir = 0, volume = 0, i = 0, retry = 5;
bool perc = false;
mpd_Status *status;
status = empcd_status();
if (!status) return;
if (arg[0] == '-') { i++; dir = -1; }
else if (arg[0] == '+') { i++; dir = +1; }
volume = strlen(&arg[i]);
if (arg[i+volume] == '%') perc = true;
volume = atoi(&arg[i]);
if (perc)
{
if (dir != 0) volume = status->volume + ((status->volume * volume / 100) * dir);
else volume = (status->volume * perc / 100);
}
else
{
if (dir != 0) volume = status->volume + (volume*dir);
/* dir == 0 case is set correctly above, as no adjustment is needed */
}
/* Take care of limits */
if (volume < 0 || volume > 100) return;
while (retry > 0)
{
retry--;
mpd_sendSetvolCommand(mpd, volume);
if (mpd_check()) continue;
mpd_finishCommand(mpd);
if (mpd_check()) continue;
break;
}
mpd_freeStatus(status);
}
static void f_seek(const char *arg, const char UNUSED *args);
static void f_seek(const char *arg, const char UNUSED *args)
{
int dir = 0, seekto = 0, i = 0, retry = 5;
bool perc = false;
mpd_Status *status = empcd_status();
if (!status) return;
if (arg[0] == '-') { i++; dir = -1; }
else if (arg[0] == '+') { i++; dir = +1; }
seekto = strlen(&arg[i]);
if (arg[i+seekto] == '%') perc = true;
seekto = atoi(&arg[i]);
if (perc)
{
if (dir != 0) seekto = status->elapsedTime + ((status->totalTime * seekto / 100) * dir);
else seekto = (status->totalTime * perc / 100);
}
else
{
if (dir != 0) seekto = status->elapsedTime + (seekto*dir);
/* dir == 0 case is set correctly above */
}
/*
* Take care of limits
* (end-10 so that one can search till the end easily)
*/
if (seekto < 0 || seekto > (status->totalTime-10)) return;
while (retry > 0)
{
retry--;
mpd_sendSeekIdCommand(mpd, status->songid, seekto);
if (mpd_check()) continue;
mpd_finishCommand(mpd);
if (mpd_check()) continue;
break;
}
mpd_freeStatus(status);
}
static void f_pause(const char *arg, const char UNUSED *args);
static void f_pause(const char *arg, const char UNUSED *args)
{
int retry = 5, mode = 0;
if (!arg || strlen(arg) == 0 || (strcasecmp(arg, "toggle") == 0))
{
/* Toggle the pause mode */
mpd_Status *status = empcd_status();
if (!status) return;
mode = (status->state == MPD_STATUS_STATE_PAUSE ? 0 : 1);
mpd_freeStatus(status);
}
else if (strcasecmp(arg, "on" ) == 0) mode = 1;
else if (strcasecmp(arg, "off") == 0) mode = 0;
while (retry > 0)
{
retry--;
mpd_sendPauseCommand(mpd, mode);
if (mpd_check()) continue;
mpd_finishCommand(mpd);
if (mpd_check()) continue;
break;
}
}
static void f_random(const char *arg, const char UNUSED *args);
static void f_random(const char *arg, const char UNUSED *args)
{
int retry = 5, mode = 0;
if (!arg || strlen(arg) == 0 || (strcasecmp(arg, "toggle") == 0))
{
/* Toggle the random mode */
mpd_Status *status = empcd_status();
if (!status) return;
mode = !status->random;
mpd_freeStatus(status);
}
else if (strcasecmp(arg, "on" ) == 0) mode = 1;
else if (strcasecmp(arg, "off") == 0) mode = 0;
while (retry > 0)
{
retry--;
mpd_sendRandomCommand(mpd, mode);
if (mpd_check()) continue;
mpd_finishCommand(mpd);
if (mpd_check()) continue;
break;
}
}
static void f_update(const char *arg, const char UNUSED *args);
static void f_update(const char *arg, const char UNUSED *args)
{
char *path;
int retry = 5;
path = (char *)(arg == NULL ? "" : arg);
while (retry > 0)
{
retry--;
mpd_sendUpdateCommand(mpd, path);
if (mpd_check()) continue;
mpd_finishCommand(mpd);
if (mpd_check()) continue;
break;
}
}
static const struct empcd_funcs
{
void (*function)(const char *arg, const char *args);
bool requires_mpd;
const char *name;
const char *args;
const char *desc;
} func_map[] =
{
/* empcd builtin commands */
{ f_exec, false, "exec", "<shellcmd>", "Execute a command" },
{ f_quit, false, "quit", NULL, "Quit empcd" },
/* MPD specific commands */
{ f_next, true, "mpd_next", NULL, "MPD Next Track" },
{ f_prev, true, "mpd_prev", NULL, "MPD Previous Track" },
{ f_stop, true, "mpd_stop", NULL, "MPD Stop Playing" },
{ f_play, true, "mpd_play", NULL, "MPD Start Playing" },
{ f_pause, true, "mpd_pause", "[toggle|on|off]", "MPD Pause Toggle or Set" },
{ f_seek, true, "mpd_seek", "[+|-]<val>[%]", "MPD Seek direct or relative (+|-) percentage when ends in %" },
{ f_volume, true, "mpd_volume", "[+|-]<val>[%]", "MPD Volume direct or relative (+|-) percentage when ends in %" },
{ f_random, true, "mpd_random", "[toggle|on|off]", "MPD Random Toggle or Set" },
{ f_update, true, "mpd_update", "[<path>]", "MPD Update" },
{ f_load, true, "mpd_plst_load", "<playlist>", "MPD Load Playlist" },
{ f_save, true, "mpd_plst_save", "<playlist>", "MPD Save Playlist" },
{ f_clear, true, "mpd_plst_clear", NULL, "MPD Clear Playlist" },
{ f_remove, true, "mpd_plst_remove", "<playlist>", "MPD Remove Playlist" },
/* End */
{ NULL, false, NULL, NULL, "undefined" }
};
/********************************************************************/
static bool set_event(uint16_t type, uint16_t code, int32_t value, void (*action)(const char *arg, const char *args), const char *args, const char *needargs);
static bool set_event(uint16_t type, uint16_t code, int32_t value, void (*action)(const char *arg, const char *args), const char *args, const char *needargs)
{
if (maxevent >= (sizeof(events)/sizeof(events[0])))
{
dolog(LOG_ERR, "Maximum number of events reached\n");
return false;
}
/* Handle no-repeating 'up' key */
if (type == EV_KEY && value == EMPCD_KEY_UPNR)
{
value = EV_KEY_UP;
events[maxevent].norepeat = true;
}
events[maxevent].type = type;
events[maxevent].code = code;
events[maxevent].value = value;
events[maxevent].prev_value = -1;
events[maxevent].action = action;
events[maxevent].args = args ? strdup(args) : args;
events[maxevent].needargs = needargs;
maxevent++;
return true;
}
static bool which_func(const char *buf, unsigned int len, unsigned int *o_, unsigned int *func_, const char **arg);
static bool which_func(const char *buf, unsigned int len, unsigned int *o_, unsigned int *func_, const char **arg)
{
unsigned int i, o = *o_, l;
/* Figure out the function */
for (i=0; func_map[i].name != NULL; i++)
{
l = strlen(func_map[i].name);
if (len != o+l && (len < o+l || buf[o+l] != ' ')) continue;
if (strncasecmp(&buf[o], func_map[i].name, l) == 0) break;
}
if (func_map[i].name == NULL)
{
*o_ = o;
return false;
}
*func_ = i;
o += l+1;
if (len > o) *arg = &buf[o];
else *arg = NULL;
*o_ = o;
return true;
}
/*
KEY_KPSLASH DOWN f_seek -1
<key> <value> <action> <arg>
*/
static bool set_event_from_map(const char *buf, struct empcd_mapping *event_map, struct empcd_mapping *value_map);
static bool set_event_from_map(const char *buf, struct empcd_mapping *event_map, struct empcd_mapping *value_map)
{
unsigned int i = 0, o = 0, len = strlen(buf), l = 0,
event_code = 0,
value = 0, func = 0;
const char *arg = NULL;
const char *event_name = "custom", *event_desc = "custom";
/* Not a numeric value? */
if (sscanf(&buf[o], "%u", &i) == 1 && i == 0)
{
/* This is our event_code */
event_code = i;
}
else
{
/* Try a name match */
for (i=0; event_map[i].code != EMPCD_MAPPING_END; i++)
{
l = strlen(event_map[i].name);
if (len < o+l || buf[o+l] != ' ') continue;
if (strncasecmp(&buf[o], event_map[i].name, l) == 0) break;
}
if (event_map[i].code == EMPCD_MAPPING_END)
{
dolog(LOG_DEBUG, "Undefined Code at %u in '%s'\n", o, buf);
return false;
}
/* This is our event_code */
event_code = event_map[i].code;
event_name = event_map[i].name;
event_desc = event_map[i].desc;
}
/* Figure out the value (up/down/release/...) */
o += l+1;
for (i=0; value_map[i].code != EMPCD_MAPPING_END; i++)
{
l = strlen(value_map[i].name);
if (len < o+l || buf[o+l] != ' ') continue;
if (strncasecmp(&buf[o], value_map[i].name, l) == 0) break;
}
if (value_map[i].code == EMPCD_MAPPING_END)
{
dolog(LOG_DEBUG, "Undefined Key Value at %u in '%s'\n", o, buf);
return false;
}
value = i;
o += l+1;
/* Figure out the function */
if (!which_func(buf, len, &o, &i, &arg))
{
dolog(LOG_DEBUG, "Undefined Function at %u in '%s'\n", o, buf);
return false;
}
func = i;
dolog(LOG_DEBUG, "Mapping Event %s (%s/%u) %s (%s) to do %s (%s) with arg %s\n",
event_name, event_desc, event_code,
value_map[value].name, value_map[value].desc,
func_map[func].name, func_map[func].desc,
arg ? arg : "<none>");
if (func_map[func].requires_mpd && nompd)
{
dolog(LOG_ERR, "Function requires MPD but MPD is disabled\n");
return false;
}
return set_event(EV_KEY, event_code, value_map[value].code, func_map[func].function, arg, func_map[func].args);
}
static bool set_event_from_custom(char *buf);
static bool set_event_from_custom(char *buf)
{
unsigned int type, code, value;
unsigned int o, c = 0, func;
const char *arg;
dolog(LOG_ERR, "Custom Event: '%s'\n", buf);
if (sscanf(buf, "%u %u %u ", &type, &code, &value) != 3)
{
dolog(LOG_ERR, "'custom' requires a numeric type, code and value\n");
return false;
}
/* Check if they are max 16 bits (value is 32bits) */
if (type > 0xffff || code > 0xffff)
{
dolog(LOG_ERR, "'custom' type/code/value are only 16bits, value provided too large\n");
return false;
}
/* Skip over the type/code/value */
for (o = 0; c < 3 && buf[o] != '\0'; o++)
{
if (buf[o] == ' ') c++;
}
if (c != 3 || buf[o] == '\0')
{
dolog(LOG_ERR, "'custom' requires a numeric type, code and value plus a function and optional arguments\n");
return false;
}
if (!which_func(buf, strlen(buf), &o, &func, &arg)) return false;
dolog(LOG_DEBUG,
"Mapping Custom Event (type %u, code %u, value %u) to do %s (%s) with arg %s\n",
type, code, value,
func_map[func].name, func_map[func].desc,
arg ? arg : "<none>");
if (func_map[func].requires_mpd && nompd)
{
dolog(LOG_ERR, "Function requires MPD but MPD is disabled\n");
return false;
}
return set_event(type, code, value, func_map[func].function, arg, func_map[func].args);
}
/********************************************************************/
/*
0 = failed to open file
>0 = all okay (lines read)
<0 = error parsing file (line number)
*/
static int readconfig(const char *cfgfile, char **device);
static int readconfig(const char *cfgfile, char **device)
{
unsigned int line = 0;
int ret = 0;
FILE *f;
f = fopen(cfgfile, "r");
dolog(LOG_DEBUG, "ReadConfig(%s) = %s\n", cfgfile, f ? "ok" : "error");
if (!f) return 0;
while (!feof(f) && ret == 0)
{
char buf[1024], buf2[1024];
unsigned int n, i = 0, j = 0;
line++;
if (fgets(buf2, sizeof(buf2), f) == 0) break;
n = strlen(buf2)-1;
/*
* Trim whitespace
* - Translate \t to space
* - strip multiple whitespaces
* Saves handling them below
*/
for (i=0,j=0; i<n; i++)
{
if (buf2[i] == '\t') buf2[i] = ' ';
if ( (i == 0 || (i > 0 && buf2[i-1] == ' ')) &&
(buf2[i] == ' ' || buf2[i] == '\t'))
{
continue;
}
buf[j++] = buf2[i];
}
/* Trim trailing space if it is there */
if (j>0 && buf[j-1] == ' ') j--;
/* Terminate our new constructed string */
buf[j] = '\0';
n = j;
/* Empty or comment line? */
if ( n == 0 ||
buf[0] == '#' ||
(buf[0] == '/' && buf[1] == '/'))
{
continue;
}
dolog(LOG_DEBUG, "%s@%04u: %s\n", cfgfile, line, buf);
if (strncasecmp("mpd_host ", buf, 9) == 0)
{
dolog(LOG_DEBUG, "Setting MPD_HOST to %s\n", &buf[9]);
if (mpd_host) free(mpd_host);
mpd_host = strdup(&buf[9]);
}
else if (strncasecmp("mpd_port ", buf, 9) == 0)
{
dolog(LOG_DEBUG, "Setting MPD_PORT to %s\n", &buf[9]);
if (mpd_port) free(mpd_port);
mpd_port = strdup(&buf[9]);
}
else if (strncasecmp("eventdevice ", buf, 12) == 0)
{
if (*device) free(*device);
*device = strdup(&buf[12]);
}
else if (strncasecmp("exclusive ", buf, 10) == 0)
{
if (strncasecmp("on", &buf[10], 2) == 0) exclusive = true;
else if (strncasecmp("off", &buf[10], 3) == 0) exclusive = false;
else
{
dolog(LOG_ERR, "Exclusive is either 'on' or 'off'\n");
ret = -line;
break;
}
}
else if (strncasecmp("exclusive", buf, 9) == 0)
{
exclusive = true;
}
else if (strncasecmp("nonexclusive", buf, 12) == 0)
{
exclusive = false;
}
else if (strncasecmp("key ", buf, 4) == 0)
{
if (!set_event_from_map(&buf[4], key_event_map, key_value_map))
{
ret = -line;
break;
}
}
else if (strncasecmp("custom ", buf, 7) == 0)
{
if (!set_event_from_custom(&buf[7]))
{
ret = -line;
break;
}
}
else if (strncasecmp("user ", buf, 5) == 0)
{
struct passwd *passwd;
/* setuid()+setgid() to another user+group */
passwd = getpwnam(&buf[5]);
if (passwd)
{
drop_uid = passwd->pw_uid;
drop_gid = passwd->pw_gid;
}
else
{
dolog(LOG_ERR, "Couldn't find user %s\n", optarg);
ret = -line;
break;
}
}
else if (strncasecmp("giveup", buf, 6) == 0)
{
giveup = true;
}
else if (strncasecmp("dontgiveup", buf, 10) == 0)
{
giveup = false;
}
else if (strncasecmp("nompd", buf, 5) == 0)
{
nompd = true;
}
else
{
dolog(LOG_ERR, "Unrecognized configuration line %u: %s\n", line, buf);
ret = -line;
break;
}
}
fclose(f);
return ret == 0 ? (int)line : ret;
}
static void handle_event(struct input_event *ev);
static void handle_event(struct input_event *ev)
{
struct empcd_events *evt;
unsigned int i, i_event;
/* Checking all events, thus multiple events can be set for an event */
for (i_event = 0; i_event < maxevent; i_event++)
{
/* Does not match yet */
evt = NULL;
/* Right Type & Code? */
if ( events[i_event].type == ev->type &&
events[i_event].code == ev->code)
{
/* It is this current value, then it is this event */
if (events[i_event].value == ev->value)
{
/* This is the night^Wevent */
evt = &events[i_event];
}
else
{
/* Note the 'previous' value */
events[i_event].prev_value = ev->value;
}
}
/* Handle logging */
if ( (evt != NULL && verbosity > 2) ||
(evt == NULL && verbosity > 5))
{
char buf[1024];
unsigned int n = 0;
struct empcd_mapping *map = NULL, *val = NULL;
const struct empcd_funcs *func = func_map;
if (ev->type == EV_KEY)
{
map = key_event_map;
val = key_value_map;
}
if (map)
{
for (i=0; map[i].code != EMPCD_MAPPING_END && map[i].code != ev->code; i++);
map = &map[i];
}
if (val)
{
for (i=0; val[i].code != EMPCD_MAPPING_END && val[i].code != ev->value; i++);
val = &val[i];
}
if (evt)
{
for (i=0; func[i].name != NULL && func[i].function != evt->action; i++);
func = &func[i];
}
n += snprintf(&buf[n], sizeof(buf)-n, "Event: T%lu.%06lu, type %u, code %u, value %d",
ev->time.tv_sec, ev->time.tv_usec, ev->type,
ev->code, ev->value);
if (map)
{
n += snprintf(&buf[n], sizeof(buf)-n, ": %s, name: %s, desc: %s",
val ? val->name : "<unknown value>",
map->name ? map->name : "<unknown name>",
map->desc ? map->desc : "");
}
if (evt)
{
n += snprintf(&buf[n], sizeof(buf)-n, ", action: %s(%s)",
func->name ? func->name : "?",
evt->args ? evt->args : "");
}
dolog(LOG_DEBUG, "%s\n", buf);
}
if (!evt) continue;
/* Handle REPEAT and then UP event for keys */
if ( ev->type == EV_KEY &&
ev->value == EV_KEY_UP &&
evt->norepeat)
{
/* Was it noted that we before had a repeat event? */
if (evt->prev_value == EV_KEY_REPEAT)
{
/* Ignore this event, but reset the previous */
evt->prev_value = -1;
continue;
}
}
evt->action(evt->args, evt->needargs);
}
}
/* Long options */
static struct option const long_options[] = {
{"config", required_argument, NULL, 'c'},
{"daemonize", no_argument, NULL, 'd'},
{"eventdevice", required_argument, NULL, 'e'},
{"nodaemonize", no_argument, NULL, 'f'},
{"giveup", no_argument, NULL, 'g'},
{"dontgiveup", no_argument, NULL, 'G'},
{"help", no_argument, NULL, 'h'},
{"list-keys", no_argument, NULL, 'K'},
{"list-functions", no_argument, NULL, 'L'},
{"nompd", no_argument, NULL, 'n'},
{"quiet", no_argument, NULL, 'q'},
{"user", required_argument, NULL, 'u'},
{"verbose", no_argument, NULL, 'v'},
{"version", no_argument, NULL, 'V'},
{"exclusive", no_argument, NULL, 'x'},
{"nonexclusive", no_argument, NULL, 'X'},
{"verbosity", required_argument, NULL, 'y'},
{NULL, no_argument, NULL, 0},
};
static char short_options[] = "c:de:fgGhKLnqu:vVxXy:";
static struct
{
const char *args;
const char *desc;
} desc_options[] =
{
/* c: */ {"<file>", "Configuration File Location"},
/* d */ {NULL, "Detach the program into the background"},
/* e: */ {"<eventdevice>", "The event device to use (default: /dev/input/event0)"},
/* f */ {NULL, "Don't detach, stay in the foreground"},