Module Name: src
Committed By: christos
Date: Sun Mar 10 21:49:26 UTC 2013
Added Files:
src/lib/npf/ext_normalize: npfext_normalize.c
Log Message:
forgot to add the c file
To generate a diff of this commit:
cvs rdiff -u -r0 -r1.1 src/lib/npf/ext_normalize/npfext_normalize.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Added files:
Index: src/lib/npf/ext_normalize/npfext_normalize.c
diff -u /dev/null src/lib/npf/ext_normalize/npfext_normalize.c:1.1
--- /dev/null Sun Mar 10 17:49:26 2013
+++ src/lib/npf/ext_normalize/npfext_normalize.c Sun Mar 10 17:49:26 2013
@@ -0,0 +1,100 @@
+/* $NetBSD: npfext_normalize.c,v 1.1 2013/03/10 21:49:26 christos Exp $ */
+
+/*-
+ * Copyright (c) 2012 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__RCSID("$NetBSD: npfext_normalize.c,v 1.1 2013/03/10 21:49:26 christos Exp $");
+
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include <errno.h>
+
+#include <npf.h>
+
+int npfext_normalize_init(void);
+nl_ext_t * npfext_normalize_construct(const char *);
+int npfext_normalize_param(nl_ext_t *, const char *, const char *);
+
+int
+npfext_normalize_init(void)
+{
+ /* Nothing to initialize. */
+ return 0;
+}
+
+nl_ext_t *
+npfext_normalize_construct(const char *name)
+{
+ assert(strcmp(name, "normalize") == 0);
+ return npf_ext_construct(name);
+}
+
+int
+npfext_normalize_param(nl_ext_t *ext, const char *param, const char *val)
+{
+ enum ptype {
+ PARAM_BOOL,
+ PARAM_U32
+ };
+ static const struct param {
+ const char * name;
+ enum ptype type;
+ bool reqval;
+ } params[] = {
+ { "random-id", PARAM_BOOL, false },
+ { "no-df", PARAM_BOOL, false },
+ { "min-ttl", PARAM_U32, true },
+ { "max-mss", PARAM_U32, true },
+ };
+
+ for (unsigned i = 0; i < __arraycount(params); i++) {
+ const char *name = params[i].name;
+
+ if (strcmp(name, param) != 0) {
+ continue;
+ }
+ if (val == NULL && params[i].reqval) {
+ return EINVAL;
+ }
+
+ switch (params[i].type) {
+ case PARAM_BOOL:
+ npf_ext_param_bool(ext, name, true);
+ break;
+ case PARAM_U32:
+ npf_ext_param_u32(ext, name, atol(val));
+ break;
+ default:
+ assert(false);
+ }
+ return 0;
+ }
+
+ /* Invalid parameter, if not found. */
+ return EINVAL;
+}
