1 files changed, 129 insertions, 0 deletions
diff --git a/contrib/ntp/libntp/is_ip_address.c b/contrib/ntp/libntp/is_ip_address.c
new file mode 100644
index 0000000..1f21376
--- /dev/null
+++ b/contrib/ntp/libntp/is_ip_address.c
@@ -0,0 +1,129 @@
+/*
+ * is_ip_address
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#if 0
+#include <stdio.h>
+#include <signal.h>
+#ifdef HAVE_FNMATCH_H
+# include <fnmatch.h>
+# if !defined(FNM_CASEFOLD) && defined(FNM_IGNORECASE)
+#  define FNM_CASEFOLD FNM_IGNORECASE
+# endif
+#endif
+#ifdef HAVE_SYS_PARAM_H
+# include <sys/param.h>
+#endif
+#ifdef HAVE_SYS_IOCTL_H
+# include <sys/ioctl.h>
+#endif
+#ifdef HAVE_SYS_SOCKIO_H	/* UXPV: SIOC* #defines (Frank Vance <fvance@waii.com>) */
+# include <sys/sockio.h>
+#endif
+#ifdef HAVE_SYS_UIO_H
+# include <sys/uio.h>
+#endif
+#endif
+
+#include "ntp_assert.h"
+#include "ntp_stdlib.h"
+#include "safecast.h"
+
+#if 0
+#include "ntp_machine.h"
+#include "ntpd.h"
+#include "ntp_io.h"
+#include "iosignal.h"
+#include "ntp_lists.h"
+#include "ntp_refclock.h"
+#include "ntp_worker.h"
+#include "ntp_request.h"
+#include "timevalops.h"
+#include "timespecops.h"
+#include "ntpd-opts.h"
+#endif
+
+/* Don't include ISC's version of IPv6 variables and structures */
+#define ISC_IPV6_H 1
+#include <isc/mem.h>
+#include <isc/interfaceiter.h>
+#include <isc/netaddr.h>
+#include <isc/result.h>
+#include <isc/sockaddr.h>
+
+
+/*
+ * Code to tell if we have an IP address
+ * If we have then return the sockaddr structure
+ * and set the return value
+ * see the bind9/getaddresses.c for details
+ */
+int
+is_ip_address(
+	const char *	host,
+	u_short		af,
+	sockaddr_u *	addr
+	)
+{
+	struct in_addr in4;
+	struct addrinfo hints;
+	struct addrinfo *result;
+	struct sockaddr_in6 *resaddr6;
+	char tmpbuf[128];
+	char *pch;
+
+	REQUIRE(host != NULL);
+	REQUIRE(addr != NULL);
+
+	ZERO_SOCK(addr);
+
+	/*
+	 * Try IPv4, then IPv6.  In order to handle the extended format
+	 * for IPv6 scoped addresses (address%scope_ID), we'll use a local
+	 * working buffer of 128 bytes.  The length is an ad-hoc value, but
+	 * should be enough for this purpose; the buffer can contain a string
+	 * of at least 80 bytes for scope_ID in addition to any IPv6 numeric
+	 * addresses (up to 46 bytes), the delimiter character and the
+	 * terminating NULL character.
+	 */
+	if (AF_UNSPEC == af || AF_INET == af)
+		if (inet_pton(AF_INET, host, &in4) == 1) {
+			AF(addr) = AF_INET;
+			SET_ADDR4N(addr, in4.s_addr);
+
+			return TRUE;
+		}
+
+	if (AF_UNSPEC == af || AF_INET6 == af)
+		if (sizeof(tmpbuf) > strlen(host)) {
+			if ('[' == host[0]) {
+				strlcpy(tmpbuf, &host[1], sizeof(tmpbuf));
+				pch = strchr(tmpbuf, ']');
+				if (pch != NULL)
+					*pch = '\0';
+			} else {
+				strlcpy(tmpbuf, host, sizeof(tmpbuf));
+			}
+			ZERO(hints);
+			hints.ai_family = AF_INET6;
+			hints.ai_flags |= AI_NUMERICHOST;
+			if (getaddrinfo(tmpbuf, NULL, &hints, &result) == 0) {
+				AF(addr) = AF_INET6;
+				resaddr6 = UA_PTR(struct sockaddr_in6, result->ai_addr);
+				SET_ADDR6N(addr, resaddr6->sin6_addr);
+				SET_SCOPE(addr, resaddr6->sin6_scope_id);
+
+				freeaddrinfo(result);
+				return TRUE;
+			}
+		}
+	/*
+	 * If we got here it was not an IP address
+	 */
+	return FALSE;
+}