From 219a6dab8995aad9ac4860cc1a84d6f3509a03a4 Mon Sep 17 00:00:00 2001
From: wbx <wbx@hydrogenium.(none)>
Date: Sun, 17 May 2009 14:41:34 +0200
Subject: Initial import

---
 package/aiccu/extra/common/dn_skipname.c | 51 ++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 package/aiccu/extra/common/dn_skipname.c

(limited to 'package/aiccu/extra')

diff --git a/package/aiccu/extra/common/dn_skipname.c b/package/aiccu/extra/common/dn_skipname.c
new file mode 100644
index 000000000..f2219f335
--- /dev/null
+++ b/package/aiccu/extra/common/dn_skipname.c
@@ -0,0 +1,51 @@
+#include <errno.h>
+#include <resolv.h>
+
+/* Ripped from glibc 2.4 sources. */
+
+/*
+ * ns_name_skip(ptrptr, eom)
+ *      Advance *ptrptr to skip over the compressed name it points at.
+ * return:
+ *      0 on success, -1 (with errno set) on failure.
+ */
+int ns_name_skip(const u_char **ptrptr, const u_char *eom)
+{
+	const u_char *cp;
+	u_int n;
+
+	cp = *ptrptr;
+	while (cp < eom && (n = *cp++) != 0)
+	{
+		/* Check for indirection. */
+		switch (n & NS_CMPRSFLGS) {
+		case 0:                 /* normal case, n == len */
+			cp += n;
+			continue;
+		case NS_CMPRSFLGS:      /* indirection */
+			cp++;
+			break;
+		default:                /* illegal type */
+			errno = EMSGSIZE;
+			return (-1);
+		}
+		break;
+	}
+	if (cp > eom)
+	{
+		errno = EMSGSIZE;
+		return (-1);
+	}
+	*ptrptr = cp;
+	return (0);
+}
+
+int dn_skipname(const u_char *ptr, const u_char *eom)
+{
+	const u_char *saveptr = ptr;
+
+	if(ns_name_skip(&ptr, eom) == -1)
+		return (-1);
+	return (ptr - saveptr);
+}
+
-- 
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