- import of strongswan-2.7.0

- applied patch for charon
2006-04-28 07:14:48 +00:00
parent 52923c9acb
commit 997358a6c4
2043 changed files with 346842 additions and 0 deletions
@@ -0,0 +1,200 @@
+/*
+ * convert from ASCII form of SA ID to binary
+ * Copyright (C) 1998, 1999  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id: atosa.c,v 1.1 2004/03/15 20:35:26 as Exp $
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+static struct satype {
+	char *prefix;
+	size_t prelen;		/* strlen(prefix) */
+	int proto;
+} satypes[] = {
+	{ "ah",		2,	SA_AH	},
+	{ "esp",	3,	SA_ESP	},
+	{ "tun",	3,	SA_IPIP },
+	{ "comp",	4,	SA_COMP },
+	{ NULL,		0,	0,	}
+};
+
+/*
+ - atosa - convert ASCII "[email protected]" to SA identifier
+ */
+const char *			/* NULL for success, else string literal */
+atosa(src, srclen, sa)
+const char *src;
+size_t srclen;			/* 0 means "apply strlen" */
+struct sa_id *sa;
+{
+	const char *at;
+	const char *addr;
+	const char *spi = NULL;
+	struct satype *sat;
+	unsigned long ul;
+	const char *oops;
+#	define	MINLEN	5	/* ah0@0 is as short as it can get */
+	static char ptname[] = PASSTHROUGHNAME;
+#	define	PTNLEN	(sizeof(ptname)-1)	/* -1 for NUL */
+
+	if (srclen == 0)
+		srclen = strlen(src);
+	if (srclen == 0)
+		return "empty string";
+	if (srclen < MINLEN)
+		return "string too short to be SA specifier";
+	if (srclen == PTNLEN && memcmp(src, ptname, PTNLEN) == 0) {
+		src = PASSTHROUGHIS;
+		srclen = strlen(src);
+	}
+
+	at = memchr(src, '@', srclen);
+	if (at == NULL)
+		return "no @ in SA specifier";
+
+	for (sat = satypes; sat->prefix != NULL; sat++)
+		if (sat->prelen < srclen &&
+				strncmp(src, sat->prefix, sat->prelen) == 0) {
+			sa->proto = sat->proto;
+			spi = src + sat->prelen;
+			break;			/* NOTE BREAK OUT */
+		}
+	if (sat->prefix == NULL)
+		return "SA specifier lacks valid protocol prefix";
+
+	if (spi >= at)
+		return "no SPI in SA specifier";
+	oops = atoul(spi, at - spi, 13, &ul);
+	if (oops != NULL)
+		return oops;
+	sa->spi = htonl(ul);
+
+	addr = at + 1;
+	oops = atoaddr(addr, srclen - (addr - src), &sa->dst);
+	if (oops != NULL)
+		return oops;
+
+	return NULL;
+}
+
+
+
+#ifdef ATOSA_MAIN
+
+#include <stdio.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+void regress(void);
+
+int
+main(int argc, char *argv[])
+{
+	struct sa_id sa;
+	char buf[100];
+	const char *oops;
+	size_t n;
+
+	if (argc < 2) {
+		fprintf(stderr, "Usage: %s {ahnnn@aaa|-r}\n", argv[0]);
+		exit(2);
+	}
+
+	if (strcmp(argv[1], "-r") == 0) {
+		regress();
+		fprintf(stderr, "regress() returned?!?\n");
+		exit(1);
+	}
+
+	oops = atosa(argv[1], 0, &sa);
+	if (oops != NULL) {
+		fprintf(stderr, "%s: conversion failed: %s\n", argv[0], oops);
+		exit(1);
+	}
+	n = satoa(sa, 0, buf, sizeof(buf));
+	if (n > sizeof(buf)) {
+		fprintf(stderr, "%s: reverse conv of `%d'", argv[0], sa.proto);
+		fprintf(stderr, "%lu@", (long unsigned int)sa.spi);
+		fprintf(stderr, "%s", inet_ntoa(sa.dst));
+		fprintf(stderr, " failed: need %ld bytes, have only %ld\n",
+						(long)n, (long)sizeof(buf));
+		exit(1);
+	}
+	printf("%s\n", buf);
+
+	exit(0);
+}
+
+struct rtab {
+	char *input;
+	char *output;			/* NULL means error expected */
+} rtab[] = {
+	{"[email protected]",		"[email protected]"},
+	{"[email protected]",		"[email protected]"},
+	{"[email protected]",		"[email protected]"},
+	{"",				NULL},
+	{"_",				NULL},
+	{"ah2.2",			NULL},
+	{"[email protected]",			NULL},
+	{"[email protected]",			"[email protected]"},
+	{"[email protected]",		NULL},
+	{"[email protected]",			NULL},
+	{"[email protected]",			NULL},
+	{"[email protected]",		NULL},
+	{"[email protected]",		NULL},
+	{PASSTHROUGHNAME,		PASSTHROUGHNAME},
+        {NULL,				NULL}
+};
+
+void
+regress(void)
+{
+	struct rtab *r;
+	int status = 0;
+	struct sa_id sa;
+	char in[100];
+	char buf[100];
+	const char *oops;
+	size_t n;
+
+	for (r = rtab; r->input != NULL; r++) {
+		strcpy(in, r->input);
+		oops = atosa(in, 0, &sa);
+		if (oops != NULL && r->output == NULL)
+			{}		/* okay, error expected */
+		else if (oops != NULL) {
+			printf("`%s' atosa failed: %s\n", r->input, oops);
+			status = 1;
+		} else if (r->output == NULL) {
+			printf("`%s' atosa succeeded unexpectedly\n",
+								r->input);
+			status = 1;
+		} else {
+			n = satoa(sa, 'd', buf, sizeof(buf));
+			if (n > sizeof(buf)) {
+				printf("`%s' satoa failed:  need %ld\n",
+							r->input, (long)n);
+				status = 1;
+			} else if (strcmp(r->output, buf) != 0) {
+				printf("`%s' gave `%s', expected `%s'\n",
+						r->input, buf, r->output);
+				status = 1;
+			}
+		}
+	}
+	exit(status);
+}
+
+#endif /* ATOSA_MAIN */