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; +}