From 0a04e8d695549788213f842cc99c724a564a88df Mon Sep 17 00:00:00 2001
From: Yasuyuki KOZAKAI <yasuyuki@netfilter.org>
Date: Tue, 24 Jul 2007 07:16:20 +0000
Subject: Unifies libip[6]t_esp.c into libxt_esp.c

---
 extensions/libipt_esp.c | 193 ------------------------------------------------
 1 file changed, 193 deletions(-)
 delete mode 100644 extensions/libipt_esp.c

(limited to 'extensions/libipt_esp.c')

diff --git a/extensions/libipt_esp.c b/extensions/libipt_esp.c
deleted file mode 100644
index b675f5bf..00000000
--- a/extensions/libipt_esp.c
+++ /dev/null
@@ -1,193 +0,0 @@
-/* Shared library add-on to iptables to add ESP support. */
-#include <stdio.h>
-#include <netdb.h>
-#include <string.h>
-#include <stdlib.h>
-#include <getopt.h>
-#include <errno.h>
-#include <iptables.h>
-#include <linux/netfilter_ipv4/ipt_esp.h>
-
-/* Function which prints out usage message. */
-static void
-help(void)
-{
-	printf(
-"ESP v%s options:\n"
-" --espspi [!] spi[:spi]\n"
-"				match spi (range)\n",
-IPTABLES_VERSION);
-}
-
-static struct option opts[] = {
-	{ "espspi", 1, 0, '1' },
-	{0}
-};
-
-static u_int32_t
-parse_esp_spi(const char *spistr)
-{
-	unsigned long int spi;
-	char* ep;
-
-	spi =  strtoul(spistr,&ep,0) ;
-
-	if ( spistr == ep ) {
-		exit_error(PARAMETER_PROBLEM,
-			   "ESP no valid digits in spi `%s'", spistr);
-	}
-	if ( spi == ULONG_MAX  && errno == ERANGE ) {
-		exit_error(PARAMETER_PROBLEM,
-			   "spi `%s' specified too big: would overflow", spistr);
-	}	
-	if ( *spistr != '\0'  && *ep != '\0' ) {
-		exit_error(PARAMETER_PROBLEM,
-			   "ESP error parsing spi `%s'", spistr);
-	}
-	return (u_int32_t) spi;
-}
-
-static void
-parse_esp_spis(const char *spistring, u_int32_t *spis)
-{
-	char *buffer;
-	char *cp;
-
-	buffer = strdup(spistring);
-	if ((cp = strchr(buffer, ':')) == NULL)
-		spis[0] = spis[1] = parse_esp_spi(buffer);
-	else {
-		*cp = '\0';
-		cp++;
-
-		spis[0] = buffer[0] ? parse_esp_spi(buffer) : 0;
-		spis[1] = cp[0] ? parse_esp_spi(cp) : 0xFFFFFFFF;
-		if (spis[0] > spis[1])
-			exit_error(PARAMETER_PROBLEM,
-				   "Invalid ESP spi range: %s", spistring);
-	}
-	free(buffer);
-}
-
-/* Initialize the match. */
-static void
-init(struct xt_entry_match *m, unsigned int *nfcache)
-{
-	struct ipt_esp *espinfo = (struct ipt_esp *)m->data;
-
-	espinfo->spis[1] = 0xFFFFFFFF;
-}
-
-#define ESP_SPI 0x01
-
-/* Function which parses command options; returns true if it
-   ate an option */
-static int
-parse(int c, char **argv, int invert, unsigned int *flags,
-      const void *entry,
-      unsigned int *nfcache,
-      struct xt_entry_match **match)
-{
-	struct ipt_esp *espinfo = (struct ipt_esp *)(*match)->data;
-
-	switch (c) {
-	case '1':
-		if (*flags & ESP_SPI)
-			exit_error(PARAMETER_PROBLEM,
-				   "Only one `--espspi' allowed");
-		check_inverse(optarg, &invert, &optind, 0);
-		parse_esp_spis(argv[optind-1], espinfo->spis);
-		if (invert)
-			espinfo->invflags |= IPT_ESP_INV_SPI;
-		*flags |= ESP_SPI;
-		break;
-	default:
-		return 0;
-	}
-
-	return 1;
-}
-
-/* Final check; we don't care. */
-static void
-final_check(unsigned int flags)
-{
-}
-
-static void
-print_spis(const char *name, u_int32_t min, u_int32_t max,
-	    int invert)
-{
-	const char *inv = invert ? "!" : "";
-
-	if (min != 0 || max != 0xFFFFFFFF || invert) {
-		printf("%s", name);
-		if (min == max) {
-			printf(":%s", inv);
-			printf("%u", min);
-		} else {
-			printf("s:%s", inv);
-			printf("%u",min);
-			printf(":");
-			printf("%u",max);
-		}
-		printf(" ");
-	}
-}
-
-/* Prints out the union ipt_matchinfo. */
-static void
-print(const void *ip,
-      const struct xt_entry_match *match, int numeric)
-{
-	const struct ipt_esp *esp = (struct ipt_esp *)match->data;
-
-	printf("esp ");
-	print_spis("spi", esp->spis[0], esp->spis[1],
-		    esp->invflags & IPT_ESP_INV_SPI);
-	if (esp->invflags & ~IPT_ESP_INV_MASK)
-		printf("Unknown invflags: 0x%X ",
-		       esp->invflags & ~IPT_ESP_INV_MASK);
-}
-
-/* Saves the union ipt_matchinfo in parsable form to stdout. */
-static void save(const void *ip, const struct xt_entry_match *match)
-{
-	const struct ipt_esp *espinfo = (struct ipt_esp *)match->data;
-
-	if (!(espinfo->spis[0] == 0
-	    && espinfo->spis[1] == 0xFFFFFFFF)) {
-		printf("--espspi %s", 
-			(espinfo->invflags & IPT_ESP_INV_SPI) ? "! " : "");
-		if (espinfo->spis[0]
-		    != espinfo->spis[1])
-			printf("%u:%u ",
-			       espinfo->spis[0],
-			       espinfo->spis[1]);
-		else
-			printf("%u ",
-			       espinfo->spis[0]);
-	}
-
-}
-
-static struct iptables_match esp = { 
-	.next 		= NULL,
-	.name 		= "esp",
-	.version 	= IPTABLES_VERSION,
-	.size		= IPT_ALIGN(sizeof(struct ipt_esp)),
-	.userspacesize	= IPT_ALIGN(sizeof(struct ipt_esp)),
-	.help		= &help,
-	.init		= &init,
-	.parse		= &parse,
-	.final_check	= &final_check,
-	.print		= &print,
-	.save		= &save,
-	.extra_opts	= opts
-};
-
-void
-_init(void)
-{
-	register_match(&esp);
-}
-- 
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