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#include <sys/types.h>
#include <sys/socket.h>
#include <sys/param.h>
#include <netinet/in.h>
#include <syslog.h>
#include <stdarg.h>
#include <stdio.h>
#include "mbuf.h"
#include "log.h"
#include "loadalias.h"
#include "vars.h"
static char *LogNames[] = {
"Async",
"Carrier",
"Chat",
"Command",
"Connect",
"Debug",
"HDLC",
"LCP",
"Link",
"LQM",
"Phase",
"TCP/IP",
"Tun",
"Warning",
"Error",
"Alert"
};
#define MSK(n) (1<<((n)-1))
static u_long LogMask = MSK(LogLINK) | MSK(LogCARRIER) | MSK(LogPHASE);
static int LogTunno = -1;
static int
syslogLevel(int lev)
{
switch (lev) {
case LogDEBUG: return LOG_DEBUG;
case LogWARN: return LOG_WARNING;
case LogERROR: return LOG_ERR;
case LogALERT: return LOG_ALERT;
}
return lev >= LogMIN && lev <= LogMAX ? LOG_INFO : 0;
}
const char *
LogName(int id)
{
return id < LogMIN || id > LogMAX ? "Unknown" : LogNames[id-1];
}
void
LogKeep(int id)
{
if (id >= LogMIN && id <= LogMAXCONF)
LogMask |= MSK(id);
}
void
LogDiscard(int id)
{
if (id >= LogMIN && id <= LogMAXCONF)
LogMask &= ~MSK(id);
}
void
LogDiscardAll()
{
LogMask = 0;
}
int
LogIsKept(int id)
{
if (id < LogMIN)
return 0;
if (id <= LogMAXCONF)
return LogMask & MSK(id);
return id <= LogMAX;
}
void
LogOpen(const char *Name)
{
openlog(Name, LOG_PID, LOG_DAEMON);
}
void
LogSetTun(int tunno)
{
LogTunno = tunno;
}
void
LogClose()
{
closelog();
LogTunno = -1;
}
void
LogPrintf(int lev, char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
if (LogIsKept(lev)) {
static char nfmt[200];
if (LogIsKept(LogTUN) && LogTunno != -1)
snprintf(nfmt, sizeof nfmt, "tun%d: %s: %s",
LogTunno, LogName(lev), fmt);
else
snprintf(nfmt, sizeof nfmt, "%s: %s", LogName(lev), fmt);
if ((lev == LogERROR || lev == LogALERT || lev == LogWARN) && VarTerm)
vfprintf(VarTerm, fmt, ap);
if (lev != LogWARN || !VarTerm)
vsyslog(syslogLevel(lev), nfmt, ap);
}
va_end(ap);
}
void
LogDumpBp(int lev, char *hdr, struct mbuf *bp)
{
LogDumpBuff(lev, hdr, MBUF_CTOP(bp), bp->cnt);
}
void
LogDumpBuff(int lev, char *hdr, u_char *ptr, int n)
{
if (LogIsKept(lev)) {
char buf[49];
char *b;
int f;
if (hdr && *hdr)
LogPrintf(lev, "%s", hdr);
while (n > 0) {
b = buf;
for (f = 0; f < 16 && n--; f++, b += 3)
sprintf(b, " %02x", (int)*ptr++);
LogPrintf(lev, buf);
}
}
}
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