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/*
* nixio - Linux I/O library for lua
*
* Copyright (C) 2009 Steven Barth <steven@midlink.org>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "nixio.h"
#include <string.h>
#include <syslog.h>
static int nixio_openlog(lua_State *L) {
int option = 0, facility = LOG_USER;
const char *ident = luaL_optstring(L, 1, "nixio");
const int j = lua_gettop(L);
for (int i=2; i<=j; i++) {
const char *flag = luaL_checkstring(L, i);
if (!strcmp(flag, "cons")) {
option |= LOG_CONS;
} else if (!strcmp(flag, "nowait")) {
option |= LOG_NOWAIT;
} else if (!strcmp(flag, "pid")) {
option |= LOG_PID;
} else if (!strcmp(flag, "perror")) {
#ifdef LOG_PERROR
option |= LOG_PERROR;
#endif
} else if (!strcmp(flag, "ndelay")) {
option |= LOG_NDELAY;
} else if (!strcmp(flag, "odelay")) {
option |= LOG_ODELAY;
} else {
return luaL_argerror(L, i,
"supported values: cons, nowait, pid, perror, ndelay, odelay");
}
}
openlog(ident, option, facility);
return 0;
}
static int nixio_closelog(lua_State *L) {
closelog();
return 0;
}
static int nixio__syslogmasg(lua_State *L, int dolog) {
int priority;
const char *flag = luaL_checkstring(L, 1);
if (!strcmp(flag, "emerg")) {
priority = LOG_EMERG;
} else if (!strcmp(flag, "alert")) {
priority = LOG_ALERT;
} else if (!strcmp(flag, "crit")) {
priority = LOG_CRIT;
} else if (!strcmp(flag, "err")) {
priority = LOG_ERR;
} else if (!strcmp(flag, "warning")) {
priority = LOG_WARNING;
} else if (!strcmp(flag, "notice")) {
priority = LOG_NOTICE;
} else if (!strcmp(flag, "info")) {
priority = LOG_INFO;
} else if (!strcmp(flag, "debug")) {
priority = LOG_DEBUG;
} else {
return luaL_argerror(L, 1, "supported values: emerg, alert, crit, err, "
"warning, notice, info, debug");
}
if (dolog) {
const char *msg = luaL_checkstring(L, 2);
syslog(priority, "%s", msg);
} else {
setlogmask(LOG_UPTO(priority));
}
return 0;
}
static int nixio_setlogmask(lua_State *L) {
return nixio__syslogmasg(L, 0);
}
static int nixio_syslog(lua_State *L) {
return nixio__syslogmasg(L, 1);
}
/* module table */
static const luaL_reg R[] = {
{"openlog", nixio_openlog},
{"syslog", nixio_syslog},
{"setlogmask", nixio_setlogmask},
{"closelog", nixio_closelog},
{NULL, NULL}
};
void nixio_open_syslog(lua_State *L) {
luaL_register(L, NULL, R);
}
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