Moved types used by kernel_ipsec_t interface (and libipsec) to libstrongswan

This avoids a dependency of libipsec to libhydra.
2012-08-08 15:41:02 +02:00
parent 053276e69a
commit 156f7e9b85
9 changed files with 223 additions and 176 deletions
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2012 Tobias Brunner
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU 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/gpl.txt>.
+ *
+ * This program 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 General Public License
+ * for more details.
+ */
+
+#include "ipsec_types.h"
+
+ENUM(ipsec_mode_names, MODE_TRANSPORT, MODE_DROP,
+	"TRANSPORT",
+	"TUNNEL",
+	"BEET",
+	"PASS",
+	"DROP"
+);
+
+ENUM(policy_dir_names, POLICY_IN, POLICY_FWD,
+	"in",
+	"out",
+	"fwd"
+);
+
+ENUM(ipcomp_transform_names, IPCOMP_NONE, IPCOMP_LZJH,
+	"IPCOMP_NONE",
+	"IPCOMP_OUI",
+	"IPCOMP_DEFLATE",
+	"IPCOMP_LZS",
+	"IPCOMP_LZJH"
+);
@@ -0,0 +1,172 @@
+/*
+ * Copyright (C) 2012 Tobias Brunner
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU 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/gpl.txt>.
+ *
+ * This program 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 General Public License
+ * for more details.
+ */
+
+/**
+ * @defgroup ipsec_types ipsec_types
+ * @{ @ingroup ipsec
+ */
+
+#ifndef IPSEC_TYPES_H_
+#define IPSEC_TYPES_H_
+
+typedef enum ipsec_mode_t ipsec_mode_t;
+typedef enum policy_dir_t policy_dir_t;
+typedef enum policy_type_t policy_type_t;
+typedef enum policy_priority_t policy_priority_t;
+typedef enum ipcomp_transform_t ipcomp_transform_t;
+typedef struct ipsec_sa_cfg_t ipsec_sa_cfg_t;
+typedef struct lifetime_cfg_t lifetime_cfg_t;
+typedef struct mark_t mark_t;
+
+#include <library.h>
+
+/**
+ * Mode of an IPsec SA.
+ */
+enum ipsec_mode_t {
+	/** not using any encapsulation */
+	MODE_NONE = 0,
+	/** transport mode, no inner address */
+	MODE_TRANSPORT = 1,
+	/** tunnel mode, inner and outer addresses */
+	MODE_TUNNEL,
+	/** BEET mode, tunnel mode but fixed, bound inner addresses */
+	MODE_BEET,
+	/** passthrough policy for traffic without an IPsec SA */
+	MODE_PASS,
+	/** drop policy discarding traffic */
+	MODE_DROP
+};
+
+/**
+ * enum names for ipsec_mode_t.
+ */
+extern enum_name_t *ipsec_mode_names;
+
+/**
+ * Direction of a policy. These are equal to those
+ * defined in xfrm.h, but we want to stay implementation
+ * neutral here.
+ */
+enum policy_dir_t {
+	/** Policy for inbound traffic */
+	POLICY_IN = 0,
+	/** Policy for outbound traffic */
+	POLICY_OUT = 1,
+	/** Policy for forwarded traffic */
+	POLICY_FWD = 2,
+};
+
+/**
+ * enum names for policy_dir_t.
+ */
+extern enum_name_t *policy_dir_names;
+
+/**
+ * Type of a policy.
+ */
+enum policy_type_t {
+	/** Normal IPsec policy */
+	POLICY_IPSEC = 1,
+	/** Passthrough policy (traffic is ignored by IPsec) */
+	POLICY_PASS,
+	/** Drop policy (traffic is discarded) */
+	POLICY_DROP,
+};
+
+/**
+ * High-level priority of a policy.
+ */
+enum policy_priority_t {
+	/** Default priority */
+	POLICY_PRIORITY_DEFAULT,
+	/** Priority for trap policies */
+	POLICY_PRIORITY_ROUTED,
+	/** Priority for fallback drop policies */
+	POLICY_PRIORITY_FALLBACK,
+};
+
+/**
+ * IPComp transform IDs, as in RFC 4306
+ */
+enum ipcomp_transform_t {
+	IPCOMP_NONE = 0,
+	IPCOMP_OUI = 1,
+	IPCOMP_DEFLATE = 2,
+	IPCOMP_LZS = 3,
+	IPCOMP_LZJH = 4,
+};
+
+/**
+ * enum strings for ipcomp_transform_t.
+ */
+extern enum_name_t *ipcomp_transform_names;
+
+/**
+ * This struct contains details about IPsec SA(s) tied to a policy.
+ */
+struct ipsec_sa_cfg_t {
+	/** mode of SA (tunnel, transport) */
+	ipsec_mode_t mode;
+	/** unique ID */
+	u_int32_t reqid;
+	/** details about ESP/AH */
+	struct {
+		/** TRUE if this protocol is used */
+		bool use;
+		/** SPI for ESP/AH */
+		u_int32_t spi;
+	} esp, ah;
+	/** details about IPComp */
+	struct {
+		/** the IPComp transform used */
+		u_int16_t transform;
+		/** CPI for IPComp */
+		u_int16_t cpi;
+	} ipcomp;
+};
+
+/**
+ * A lifetime_cfg_t defines the lifetime limits of an SA.
+ *
+ * Set any of these values to 0 to ignore.
+ */
+struct lifetime_cfg_t {
+	struct {
+		/** Limit before the SA gets invalid. */
+		u_int64_t	life;
+		/** Limit before the SA gets rekeyed. */
+		u_int64_t	rekey;
+		/** The range of a random value subtracted from rekey. */
+		u_int64_t	jitter;
+	} time, bytes, packets;
+};
+
+/**
+ * A mark_t defines an optional mark in an IPsec SA.
+ */
+struct mark_t {
+	/** Mark value */
+	u_int32_t value;
+	/** Mark mask */
+	u_int32_t mask;
+};
+
+/**
+ * Special mark value that uses the reqid of the CHILD_SA as mark
+ */
+#define MARK_REQID (0xFFFFFFFF)
+
+#endif /** IPSEC_TYPES_H_ @}*/