From mboxrd@z Thu Jan  1 00:00:00 1970
To: 9fans@9fans.net
Subject: Re: [9fans] syslog to bsd/linux systems
From: "Russ Cox" <rsc@swtch.com>
Date: Mon, 26 May 2008 16:41:50 -0700
In-Reply-To: <13426df10805260915r69e8d6e3i4a63b451e6ad7b9f@mail.gmail.com>
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> I know this question has been addressed before but I hvae not yet
> found the discussion.
>
> I am moving 9grid.net to a new location in california, but the site is
> requesting that I send all syslog output to a linux host.
>
> Anyone recall simple solution here? It's tempting to just do it via
> shell script, for fun, but if somebody's got a known good setup that
> would save me some time.

I don't understand the problem.  Since Plan 9 doesn't
generate any syslog output, you're already sending it
all to their linux host.

I don't remember whether the code below actually works.

Russ


#include <u.h>
#include <libc.h>
#include <bio.h>

enum
{
	FSystem = 3,  // facility: system daemons
	SInfo = 6,  // severity: informational
};

void
usage(void)
{
	fprint(2, "usage: cat log-source | syslog [-p pri] [-h host] [-t tag] addr\n");
	exits("usage");
}

char *mon = "JanFebMarAprMayJunJulAugSepOctNovDec";

void
main(int argc, char **argv)
{
	int pri, fd, n;
	char *host;
	Biobuf b;
	char *p, msg[1000], *tag;
	Tm *tm;

	pri = FSystem*8 + SInfo;
	host = sysname();
	tag = "zzz";
	ARGBEGIN{
	case 'p':
		pri = atoi(EARGF(usage()));
		break;
	case 'h':
		host = EARGF(usage());
		break;
	case 't':
		tag = EARGF(usage());
		break;
	default:
		usage();
	}ARGEND

	if(argc != 1)
		usage();
	fd = dial(netmkaddr(argv[0], "udp", "syslog"), nil, nil, nil);
	if(fd < 0)
		sysfatal("dial %s: %r", argv[0]);

	Binit(&b, 0, OREAD);
	while((p = Brdstr(&b, '\n', 1)) != nil){
		tm = localtime(time(0));
		n = snprint(msg, sizeof msg,
			"<%d>%.3s %02d %02d:%02d:%02d %s %s: %s",
			pri, mon+tm->mon*3, tm->mday, tm->hour, tm->min, tm->sec,
			host, tag, p);
		free(p);
		write(2, msg, n);
		write(fd, msg, n);
	}
	exits(0);
}