Import iked, a new implementation of the IKEv2 protocol.

iked(8) is an automatic keying daemon for IPsec, like isakmpd(8), that
IPsec creates flows and SAs automatically.  Unlike isakmpd, iked(8)
implements the newer IKEv2 protocol instead of IKEv1/ISAKMP.  The
daemon is still work-in-progress and not enabled in the builds, but is
already able to establish IKEv2 sessions with some other IKEv2
implementations as a responder.

with lots of help and debugging by jsg@
ok deraadt@

1 files changed, 193 insertions, 0 deletions

diff --git a/sbin/iked/log.c b/sbin/iked/log.c
new file mode 100644
index 00000000000..5fc42dd6fac
--- /dev/null
+++ b/sbin/iked/log.c
@@ -0,0 +1,193 @@
+/*	$OpenBSD: log.c,v 1.1 2010/06/03 16:41:12 reyk Exp $	*/
+/*	$vantronix: log.c,v 1.4 2010/04/21 19:29:09 reyk Exp $	*/
+
+/*
+ * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/param.h>
+#include <sys/queue.h>
+#include <sys/socket.h>
+#include <sys/tree.h>
+
+#include <errno.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <syslog.h>
+#include <event.h>
+
+#include "iked.h"
+
+int	 debug;
+int	 verbose;
+
+void	 vlog(int, const char *, va_list);
+void	 logit(int, const char *, ...);
+
+void
+log_init(int n_debug)
+{
+	extern char	*__progname;
+
+	debug = n_debug;
+	verbose = n_debug;
+
+	if (!debug)
+		openlog(__progname, LOG_PID | LOG_NDELAY, LOG_DAEMON);
+
+	tzset();
+}
+
+void
+log_verbose(int v)
+{
+	if (v > debug)
+		verbose = v;
+}
+
+void
+logit(int pri, const char *fmt, ...)
+{
+	va_list	ap;
+
+	va_start(ap, fmt);
+	vlog(pri, fmt, ap);
+	va_end(ap);
+}
+
+void
+vlog(int pri, const char *fmt, va_list ap)
+{
+	char	*nfmt;
+
+	if (debug) {
+		/* best effort in out of mem situations */
+		if (asprintf(&nfmt, "%s\n", fmt) == -1) {
+			vfprintf(stderr, fmt, ap);
+			fprintf(stderr, "\n");
+		} else {
+			vfprintf(stderr, nfmt, ap);
+			free(nfmt);
+		}
+		fflush(stderr);
+	} else
+		vsyslog(pri, fmt, ap);
+}
+
+
+void
+log_warn(const char *emsg, ...)
+{
+	char	*nfmt;
+	va_list	 ap;
+
+	/* best effort to even work in out of memory situations */
+	if (emsg == NULL)
+		logit(LOG_CRIT, "%s", strerror(errno));
+	else {
+		va_start(ap, emsg);
+
+		if (asprintf(&nfmt, "%s: %s", emsg, strerror(errno)) == -1) {
+			/* we tried it... */
+			vlog(LOG_CRIT, emsg, ap);
+			logit(LOG_CRIT, "%s", strerror(errno));
+		} else {
+			vlog(LOG_CRIT, nfmt, ap);
+			free(nfmt);
+		}
+		va_end(ap);
+	}
+}
+
+void
+log_warnx(const char *emsg, ...)
+{
+	va_list	 ap;
+
+	va_start(ap, emsg);
+	vlog(LOG_CRIT, emsg, ap);
+	va_end(ap);
+}
+
+void
+log_info(const char *emsg, ...)
+{
+	va_list	 ap;
+
+	va_start(ap, emsg);
+	vlog(LOG_INFO, emsg, ap);
+	va_end(ap);
+}
+
+void
+log_debug(const char *emsg, ...)
+{
+	va_list	 ap;
+
+	if (verbose > 1) {
+		va_start(ap, emsg);
+		vlog(LOG_DEBUG, emsg, ap);
+		va_end(ap);
+	}
+}
+
+void
+print_debug(const char *emsg, ...)
+{
+	va_list	 ap;
+
+	if (debug && verbose > 2) {
+		va_start(ap, emsg);
+		vfprintf(stderr, emsg, ap);
+		va_end(ap);
+	}
+}
+
+void
+print_verbose(const char *emsg, ...)
+{
+	va_list	 ap;
+
+	if (verbose) {
+		va_start(ap, emsg);
+		vfprintf(stderr, emsg, ap);
+		va_end(ap);
+	}
+}
+
+void
+fatal(const char *emsg)
+{
+	if (emsg == NULL)
+		logit(LOG_CRIT, "fatal: %s", strerror(errno));
+	else {
+		if (errno)
+			logit(LOG_CRIT, "fatal: %s: %s",
+			    emsg, strerror(errno));
+		else
+			logit(LOG_CRIT, "fatal: %s", emsg);
+	}
+
+	exit(1);
+}
+
+void
+fatalx(const char *emsg)
+{
+	errno = 0;
+	fatal(emsg);
+}