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/* Syslog interface for tcl
* Copyright Victor Wagner <vitus@ice.ru> at
* http://www.ice.ru/~vitus/works/tcl.html#syslog
*
* Slightly modified by Steve Bennett <steveb@snapgear.com>
* Ported to Jim by Steve Bennett <steveb@workware.net.au>
*/
#include <jim.h>
#include <syslog.h>
#include <string.h>
typedef struct {
int logOpened;
int facility;
int options;
char ident[32];
} SyslogInfo;
#ifndef LOG_AUTHPRIV
# define LOG_AUTHPRIV LOG_AUTH
#endif
static const char *facilities[] = {
[LOG_AUTHPRIV] = "authpriv",
[LOG_CRON] = "cron",
[LOG_DAEMON] = "daemon",
[LOG_KERN] = "kernel",
[LOG_LPR] = "lpr",
[LOG_MAIL] = "mail",
[LOG_NEWS] = "news",
[LOG_SYSLOG] = "syslog",
[LOG_USER] = "user",
[LOG_UUCP] = "uucp",
[LOG_LOCAL0] = "local0",
[LOG_LOCAL1] = "local1",
[LOG_LOCAL2] = "local2",
[LOG_LOCAL3] = "local3",
[LOG_LOCAL4] = "local4",
[LOG_LOCAL5] = "local5",
[LOG_LOCAL6] = "local6",
[LOG_LOCAL7] = "local7",
};
static const char *priorities[] = {
[LOG_EMERG] = "emerg",
[LOG_ALERT] = "alert",
[LOG_CRIT] = "crit",
[LOG_ERR] = "error",
[LOG_WARNING] = "warning",
[LOG_NOTICE] = "notice",
[LOG_INFO] = "info",
[LOG_DEBUG] = "debug",
};
/**
* Find a matching name in the array of the given length.
*
* NULL entries are ignored.
*
* Returns the matching index if found, or -1 if not.
*/
static int find_by_name(const char *name, const char *array[], size_t len)
{
int i;
for (i = 0; i < len; i++) {
if (array[i] && strcmp(array[i], name) == 0) {
return i;
}
}
return -1;
}
/**
* Deletes the syslog command.
*/
static void Jim_SyslogCmdDelete(Jim_Interp *interp, void *privData)
{
SyslogInfo *info=(SyslogInfo *)privData;
if (info->logOpened) {
closelog();
}
Jim_Free(info);
}
/* Syslog_Log -
* implements syslog tcl command. General format: syslog ?options? level text
* options -facility -ident -options
*
* syslog ?-facility cron|daemon|...? ?-ident string? ?-options int? ?debug|info|...? text
*/
int
Jim_SyslogCmd (Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
int priority = LOG_INFO;
int i=1;
SyslogInfo *info = Jim_CmdPrivData(interp);
if (argc <= 1) {
wrongargs:
Jim_WrongNumArgs(interp, 1, argv, "?-facility cron|daemon|...? ?-ident string? ?-options int? ?debug|info|...? message");
return JIM_ERR;
}
while (i < argc-1) {
if (Jim_CompareStringImmediate(interp, argv[i], "-facility")) {
int entry = find_by_name(Jim_GetString(argv[i + 1], NULL), facilities, sizeof(facilities) / sizeof(*facilities));
if (entry < 0) {
Jim_SetResultString(interp, "Unknown facility", -1);
return JIM_ERR;
}
if (info->facility != entry) {
info->facility = entry;
if (info->logOpened) {
closelog();
info->logOpened=0;
}
}
}
else if (Jim_CompareStringImmediate(interp, argv[i], "-options")) {
long tmp;
if (Jim_GetLong(interp, argv[i+1], &tmp) == JIM_ERR) {
return JIM_ERR;
}
info->options = tmp;
if (info->logOpened) {
closelog();
info->logOpened=0;
}
}
else if (Jim_CompareStringImmediate(interp, argv[i], "-ident")) {
strncpy(info->ident, Jim_GetString(argv[i+1], NULL), sizeof(info->ident));
info->ident[sizeof(info->ident) - 1] = 0;
if (info->logOpened) {
closelog();
info->logOpened=0;
}
}
else {
break;
}
i += 2;
}
/* There should be either 0, 1 or 2 args left */
if (i == argc) {
/* No args, but they have set some options, so OK */
return JIM_OK;
}
if (i<argc-1) {
priority = find_by_name(Jim_GetString(argv[i], NULL), priorities, sizeof(priorities) / sizeof(*priorities));
if (priority < 0) {
Jim_SetResultString(interp, "Unknown priority", -1);
return JIM_ERR;
}
i++;
}
if (i != argc - 1) {
goto wrongargs;
}
if (!info->logOpened) {
if (!info->ident[0]) {
Jim_Obj *argv0 = Jim_GetGlobalVariableStr(interp, "argv0", JIM_NONE);
if (argv0) {
strncpy(info->ident, Jim_GetString(argv0, NULL), sizeof(info->ident));
} else {
strcpy(info->ident,"Tcl script");
}
info->ident[sizeof(info->ident) - 1] = 0;
}
openlog(info->ident, info->options, info->facility);
info->logOpened=1;
}
syslog(priority, "%s", Jim_GetString(argv[i], NULL));
return JIM_OK;
}
int Jim_syslogInit(Jim_Interp *interp)
{
SyslogInfo *info;
if (Jim_PackageProvide(interp, "syslog", "1.0", JIM_ERRMSG) != JIM_OK) {
return JIM_ERR;
}
info = Jim_Alloc(sizeof(*info));
info->logOpened=0;
info->options=0;
info->facility=LOG_USER;
info->ident[0] = 0;
Jim_CreateCommand(interp, "syslog", Jim_SyslogCmd, info, Jim_SyslogCmdDelete);
return JIM_OK;
}
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