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-rw-r--r--src/charon/plugins/kernel_pfkey/Makefile.am10
-rw-r--r--src/charon/plugins/kernel_pfkey/Makefile.in572
-rw-r--r--src/charon/plugins/kernel_pfkey/kernel_pfkey_ipsec.c2215
-rw-r--r--src/charon/plugins/kernel_pfkey/kernel_pfkey_ipsec.h46
-rw-r--r--src/charon/plugins/kernel_pfkey/kernel_pfkey_plugin.c56
-rw-r--r--src/charon/plugins/kernel_pfkey/kernel_pfkey_plugin.h47
6 files changed, 0 insertions, 2946 deletions
diff --git a/src/charon/plugins/kernel_pfkey/Makefile.am b/src/charon/plugins/kernel_pfkey/Makefile.am
deleted file mode 100644
index a72c6a999..000000000
--- a/src/charon/plugins/kernel_pfkey/Makefile.am
+++ /dev/null
@@ -1,10 +0,0 @@
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- kernel_pfkey_ipsec.h kernel_pfkey_ipsec.c
-libstrongswan_kernel_pfkey_la_LDFLAGS = -module -avoid-version
diff --git a/src/charon/plugins/kernel_pfkey/Makefile.in b/src/charon/plugins/kernel_pfkey/Makefile.in
deleted file mode 100644
index 8a0961a7d..000000000
--- a/src/charon/plugins/kernel_pfkey/Makefile.in
+++ /dev/null
@@ -1,572 +0,0 @@
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- `test -z '$(STRIP)' || \
- echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
-mostlyclean-generic:
-
-clean-generic:
-
-distclean-generic:
- -test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
- -test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
-
-maintainer-clean-generic:
- @echo "This command is intended for maintainers to use"
- @echo "it deletes files that may require special tools to rebuild."
-clean: clean-am
-
-clean-am: clean-generic clean-libtool clean-pluginLTLIBRARIES \
- mostlyclean-am
-
-distclean: distclean-am
- -rm -rf ./$(DEPDIR)
- -rm -f Makefile
-distclean-am: clean-am distclean-compile distclean-generic \
- distclean-tags
-
-dvi: dvi-am
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- mostlyclean-libtool
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-
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- clean-libtool clean-pluginLTLIBRARIES ctags distclean \
- distclean-compile distclean-generic distclean-libtool \
- distclean-tags distdir dvi dvi-am html html-am info info-am \
- install install-am install-data install-data-am install-dvi \
- install-dvi-am install-exec install-exec-am install-html \
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-
-
-# Tell versions [3.59,3.63) of GNU make to not export all variables.
-# Otherwise a system limit (for SysV at least) may be exceeded.
-.NOEXPORT:
diff --git a/src/charon/plugins/kernel_pfkey/kernel_pfkey_ipsec.c b/src/charon/plugins/kernel_pfkey/kernel_pfkey_ipsec.c
deleted file mode 100644
index 9c50746ac..000000000
--- a/src/charon/plugins/kernel_pfkey/kernel_pfkey_ipsec.c
+++ /dev/null
@@ -1,2215 +0,0 @@
-/*
- * Copyright (C) 2008-2009 Tobias Brunner
- * Copyright (C) 2008 Andreas Steffen
- * 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 <sys/types.h>
-#include <sys/socket.h>
-
-#ifdef __FreeBSD__
-#include <limits.h> /* for LONG_MAX */
-#endif
-
-#ifdef HAVE_NET_PFKEYV2_H
-#include <net/pfkeyv2.h>
-#else
-#include <stdint.h>
-#include <linux/pfkeyv2.h>
-#endif
-
-#ifdef SADB_X_EXT_NAT_T_TYPE
-#define HAVE_NATT
-#endif
-
-#ifdef HAVE_NETIPSEC_IPSEC_H
-#include <netipsec/ipsec.h>
-#elif defined(HAVE_NETINET6_IPSEC_H)
-#include <netinet6/ipsec.h>
-#else
-#include <linux/ipsec.h>
-#endif
-
-#ifdef HAVE_NATT
-#ifdef HAVE_LINUX_UDP_H
-#include <linux/udp.h>
-#else
-#include <netinet/udp.h>
-#endif /*HAVE_LINUX_UDP_H*/
-#endif /*HAVE_NATT*/
-
-#include <unistd.h>
-#include <time.h>
-#include <errno.h>
-
-#include "kernel_pfkey_ipsec.h"
-
-#include <daemon.h>
-#include <utils/host.h>
-#include <threading/thread.h>
-#include <threading/mutex.h>
-#include <processing/jobs/callback_job.h>
-#include <processing/jobs/acquire_job.h>
-#include <processing/jobs/migrate_job.h>
-#include <processing/jobs/rekey_child_sa_job.h>
-#include <processing/jobs/delete_child_sa_job.h>
-#include <processing/jobs/update_sa_job.h>
-
-/** non linux specific */
-#ifndef IPPROTO_COMP
-#define IPPROTO_COMP IPPROTO_IPCOMP
-#endif
-
-#ifndef SADB_X_AALG_SHA2_256HMAC
-#define SADB_X_AALG_SHA2_256HMAC SADB_X_AALG_SHA2_256
-#define SADB_X_AALG_SHA2_384HMAC SADB_X_AALG_SHA2_384
-#define SADB_X_AALG_SHA2_512HMAC SADB_X_AALG_SHA2_512
-#endif
-
-#ifndef SADB_X_EALG_AESCBC
-#define SADB_X_EALG_AESCBC SADB_X_EALG_AES
-#endif
-
-#ifndef SADB_X_EALG_CASTCBC
-#define SADB_X_EALG_CASTCBC SADB_X_EALG_CAST128CBC
-#endif
-
-#ifndef SOL_IP
-#define SOL_IP IPPROTO_IP
-#define SOL_IPV6 IPPROTO_IPV6
-#endif
-
-/** from linux/in.h */
-#ifndef IP_IPSEC_POLICY
-#define IP_IPSEC_POLICY 16
-#endif
-
-/** missing on uclibc */
-#ifndef IPV6_IPSEC_POLICY
-#define IPV6_IPSEC_POLICY 34
-#endif
-
-/** default priority of installed policies */
-#define PRIO_LOW 3000
-#define PRIO_HIGH 2000
-
-#ifdef __APPLE__
-/** from xnu/bsd/net/pfkeyv2.h */
-#define SADB_X_EXT_NATT 0x002
- struct sadb_sa_2 {
- struct sadb_sa sa;
- u_int16_t sadb_sa_natt_port;
- u_int16_t sadb_reserved0;
- u_int32_t sadb_reserved1;
- };
-#endif
-
-/** buffer size for PF_KEY messages */
-#define PFKEY_BUFFER_SIZE 4096
-
-/** PF_KEY messages are 64 bit aligned */
-#define PFKEY_ALIGNMENT 8
-/** aligns len to 64 bits */
-#define PFKEY_ALIGN(len) (((len) + PFKEY_ALIGNMENT - 1) & ~(PFKEY_ALIGNMENT - 1))
-/** calculates the properly padded length in 64 bit chunks */
-#define PFKEY_LEN(len) ((PFKEY_ALIGN(len) / PFKEY_ALIGNMENT))
-/** calculates user mode length i.e. in bytes */
-#define PFKEY_USER_LEN(len) ((len) * PFKEY_ALIGNMENT)
-
-/** given a PF_KEY message header and an extension this updates the length in the header */
-#define PFKEY_EXT_ADD(msg, ext) ((msg)->sadb_msg_len += ((struct sadb_ext*)ext)->sadb_ext_len)
-/** given a PF_KEY message header this returns a pointer to the next extension */
-#define PFKEY_EXT_ADD_NEXT(msg) ((struct sadb_ext*)(((char*)(msg)) + PFKEY_USER_LEN((msg)->sadb_msg_len)))
-/** copy an extension and append it to a PF_KEY message */
-#define PFKEY_EXT_COPY(msg, ext) (PFKEY_EXT_ADD(msg, memcpy(PFKEY_EXT_ADD_NEXT(msg), ext, PFKEY_USER_LEN(((struct sadb_ext*)ext)->sadb_ext_len))))
-/** given a PF_KEY extension this returns a pointer to the next extension */
-#define PFKEY_EXT_NEXT(ext) ((struct sadb_ext*)(((char*)(ext)) + PFKEY_USER_LEN(((struct sadb_ext*)ext)->sadb_ext_len)))
-/** given a PF_KEY extension this returns a pointer to the next extension also updates len (len in 64 bit words) */
-#define PFKEY_EXT_NEXT_LEN(ext,len) ((len) -= (ext)->sadb_ext_len, PFKEY_EXT_NEXT(ext))
-/** true if ext has a valid length and len is large enough to contain ext (assuming len in 64 bit words) */
-#define PFKEY_EXT_OK(ext,len) ((len) >= PFKEY_LEN(sizeof(struct sadb_ext)) && \
- (ext)->sadb_ext_len >= PFKEY_LEN(sizeof(struct sadb_ext)) && \
- (ext)->sadb_ext_len <= (len))
-
-typedef struct private_kernel_pfkey_ipsec_t private_kernel_pfkey_ipsec_t;
-
-/**
- * Private variables and functions of kernel_pfkey class.
- */
-struct private_kernel_pfkey_ipsec_t
-{
- /**
- * Public part of the kernel_pfkey_t object.
- */
- kernel_pfkey_ipsec_t public;
-
- /**
- * mutex to lock access to various lists
- */
- mutex_t *mutex;
-
- /**
- * List of installed policies (policy_entry_t)
- */
- linked_list_t *policies;
-
- /**
- * whether to install routes along policies
- */
- bool install_routes;
-
- /**
- * job receiving PF_KEY events
- */
- callback_job_t *job;
-
- /**
- * mutex to lock access to the PF_KEY socket
- */
- mutex_t *mutex_pfkey;
-
- /**
- * PF_KEY socket to communicate with the kernel
- */
- int socket;
-
- /**
- * PF_KEY socket to receive acquire and expire events
- */
- int socket_events;
-
- /**
- * sequence number for messages sent to the kernel
- */
- int seq;
-};
-
-typedef struct route_entry_t route_entry_t;
-
-/**
- * installed routing entry
- */
-struct route_entry_t {
- /** Name of the interface the route is bound to */
- char *if_name;
-
- /** Source ip of the route */
- host_t *src_ip;
-
- /** gateway for this route */
- host_t *gateway;
-
- /** Destination net */
- chunk_t dst_net;
-
- /** Destination net prefixlen */
- u_int8_t prefixlen;
-};
-
-/**
- * destroy an route_entry_t object
- */
-static void route_entry_destroy(route_entry_t *this)
-{
- free(this->if_name);
- DESTROY_IF(this->src_ip);
- DESTROY_IF(this->gateway);
- chunk_free(&this->dst_net);
- free(this);
-}
-
-typedef struct policy_entry_t policy_entry_t;
-
-/**
- * installed kernel policy.
- */
-struct policy_entry_t {
-
- /** reqid of this policy */
- u_int32_t reqid;
-
- /** index assigned by the kernel */
- u_int32_t index;
-
- /** direction of this policy: in, out, forward */
- u_int8_t direction;
-
- /** parameters of installed policy */
- struct {
- /** subnet and port */
- host_t *net;
- /** subnet mask */
- u_int8_t mask;
- /** protocol */
- u_int8_t proto;
- } src, dst;
-
- /** associated route installed for this policy */
- route_entry_t *route;
-
- /** by how many CHILD_SA's this policy is used */
- u_int refcount;
-};
-
-/**
- * create a policy_entry_t object
- */
-static policy_entry_t *create_policy_entry(traffic_selector_t *src_ts,
- traffic_selector_t *dst_ts, policy_dir_t dir, u_int32_t reqid)
-{
- policy_entry_t *policy = malloc_thing(policy_entry_t);
- policy->reqid = reqid;
- policy->index = 0;
- policy->direction = dir;
- policy->route = NULL;
- policy->refcount = 0;
-
- src_ts->to_subnet(src_ts, &policy->src.net, &policy->src.mask);
- dst_ts->to_subnet(dst_ts, &policy->dst.net, &policy->dst.mask);
-
- /* src or dest proto may be "any" (0), use more restrictive one */
- policy->src.proto = max(src_ts->get_protocol(src_ts), dst_ts->get_protocol(dst_ts));
- policy->src.proto = policy->src.proto ? policy->src.proto : IPSEC_PROTO_ANY;
- policy->dst.proto = policy->src.proto;
-
- return policy;
-}
-
-/**
- * destroy a policy_entry_t object
- */
-static void policy_entry_destroy(policy_entry_t *this)
-{
- DESTROY_IF(this->src.net);
- DESTROY_IF(this->dst.net);
- if (this->route)
- {
- route_entry_destroy(this->route);
- }
- free(this);
-}
-
-/**
- * compares two policy_entry_t
- */
-static inline bool policy_entry_equals(policy_entry_t *current, policy_entry_t *policy)
-{
- return current->direction == policy->direction &&
- current->src.proto == policy->src.proto &&
- current->dst.proto == policy->dst.proto &&
- current->src.mask == policy->src.mask &&
- current->dst.mask == policy->dst.mask &&
- current->src.net->equals(current->src.net, policy->src.net) &&
- current->dst.net->equals(current->dst.net, policy->dst.net);
-}
-
-/**
- * compare the given kernel index with that of a policy
- */
-static inline bool policy_entry_match_byindex(policy_entry_t *current, u_int32_t *index)
-{
- return current->index == *index;
-}
-
-typedef struct pfkey_msg_t pfkey_msg_t;
-
-struct pfkey_msg_t
-{
- /**
- * PF_KEY message base
- */
- struct sadb_msg *msg;
-
- /**
- * PF_KEY message extensions
- */
- union {
- struct sadb_ext *ext[SADB_EXT_MAX + 1];
- struct {
- struct sadb_ext *reserved; /* SADB_EXT_RESERVED */
- struct sadb_sa *sa; /* SADB_EXT_SA */
- struct sadb_lifetime *lft_current; /* SADB_EXT_LIFETIME_CURRENT */
- struct sadb_lifetime *lft_hard; /* SADB_EXT_LIFETIME_HARD */
- struct sadb_lifetime *lft_soft; /* SADB_EXT_LIFETIME_SOFT */
- struct sadb_address *src; /* SADB_EXT_ADDRESS_SRC */
- struct sadb_address *dst; /* SADB_EXT_ADDRESS_DST */
- struct sadb_address *proxy; /* SADB_EXT_ADDRESS_PROXY */
- struct sadb_key *key_auth; /* SADB_EXT_KEY_AUTH */
- struct sadb_key *key_encr; /* SADB_EXT_KEY_ENCRYPT */
- struct sadb_ident *id_src; /* SADB_EXT_IDENTITY_SRC */
- struct sadb_ident *id_dst; /* SADB_EXT_IDENTITY_DST */
- struct sadb_sens *sensitivity; /* SADB_EXT_SENSITIVITY */
- struct sadb_prop *proposal; /* SADB_EXT_PROPOSAL */
- struct sadb_supported *supported_auth; /* SADB_EXT_SUPPORTED_AUTH */
- struct sadb_supported *supported_encr; /* SADB_EXT_SUPPORTED_ENCRYPT */
- struct sadb_spirange *spirange; /* SADB_EXT_SPIRANGE */
- struct sadb_x_kmprivate *x_kmprivate; /* SADB_X_EXT_KMPRIVATE */
- struct sadb_x_policy *x_policy; /* SADB_X_EXT_POLICY */
- struct sadb_x_sa2 *x_sa2; /* SADB_X_EXT_SA2 */
- struct sadb_x_nat_t_type *x_natt_type; /* SADB_X_EXT_NAT_T_TYPE */
- struct sadb_x_nat_t_port *x_natt_sport; /* SADB_X_EXT_NAT_T_SPORT */
- struct sadb_x_nat_t_port *x_natt_dport; /* SADB_X_EXT_NAT_T_DPORT */
- struct sadb_address *x_natt_oa; /* SADB_X_EXT_NAT_T_OA */
- struct sadb_x_sec_ctx *x_sec_ctx; /* SADB_X_EXT_SEC_CTX */
- struct sadb_x_kmaddress *x_kmaddress; /* SADB_X_EXT_KMADDRESS */
- } __attribute__((__packed__));
- };
-};
-
-ENUM(sadb_ext_type_names, SADB_EXT_RESERVED, SADB_EXT_MAX,
- "SADB_EXT_RESERVED",
- "SADB_EXT_SA",
- "SADB_EXT_LIFETIME_CURRENT",
- "SADB_EXT_LIFETIME_HARD",
- "SADB_EXT_LIFETIME_SOFT",
- "SADB_EXT_ADDRESS_SRC",
- "SADB_EXT_ADDRESS_DST",
- "SADB_EXT_ADDRESS_PROXY",
- "SADB_EXT_KEY_AUTH",
- "SADB_EXT_KEY_ENCRYPT",
- "SADB_EXT_IDENTITY_SRC",
- "SADB_EXT_IDENTITY_DST",
- "SADB_EXT_SENSITIVITY",
- "SADB_EXT_PROPOSAL",
- "SADB_EXT_SUPPORTED_AUTH",
- "SADB_EXT_SUPPORTED_ENCRYPT",
- "SADB_EXT_SPIRANGE",
- "SADB_X_EXT_KMPRIVATE",
- "SADB_X_EXT_POLICY",
- "SADB_X_EXT_SA2",
- "SADB_X_EXT_NAT_T_TYPE",
- "SADB_X_EXT_NAT_T_SPORT",
- "SADB_X_EXT_NAT_T_DPORT",
- "SADB_X_EXT_NAT_T_OA",
- "SADB_X_EXT_SEC_CTX",
- "SADB_X_EXT_KMADDRESS"
-);
-
-/**
- * convert a IKEv2 specific protocol identifier to the PF_KEY sa type
- */
-static u_int8_t proto_ike2satype(protocol_id_t proto)
-{
- switch (proto)
- {
- case PROTO_ESP:
- return SADB_SATYPE_ESP;
- case PROTO_AH:
- return SADB_SATYPE_AH;
- case IPPROTO_COMP:
- return SADB_X_SATYPE_IPCOMP;
- default:
- return proto;
- }
-}
-
-/**
- * convert a PF_KEY sa type to a IKEv2 specific protocol identifier
- */
-static protocol_id_t proto_satype2ike(u_int8_t proto)
-{
- switch (proto)
- {
- case SADB_SATYPE_ESP:
- return PROTO_ESP;
- case SADB_SATYPE_AH:
- return PROTO_AH;
- case SADB_X_SATYPE_IPCOMP:
- return IPPROTO_COMP;
- default:
- return proto;
- }
-}
-
-/**
- * convert a IKEv2 specific protocol identifier to the IP protocol identifier
- */
-static u_int8_t proto_ike2ip(protocol_id_t proto)
-{
- switch (proto)
- {
- case PROTO_ESP:
- return IPPROTO_ESP;
- case PROTO_AH:
- return IPPROTO_AH;
- default:
- return proto;
- }
-}
-
-/**
- * convert the general ipsec mode to the one defined in ipsec.h
- */
-static u_int8_t mode2kernel(ipsec_mode_t mode)
-{
- switch (mode)
- {
- case MODE_TRANSPORT:
- return IPSEC_MODE_TRANSPORT;
- case MODE_TUNNEL:
- return IPSEC_MODE_TUNNEL;
-#ifdef HAVE_IPSEC_MODE_BEET
- case MODE_BEET:
- return IPSEC_MODE_BEET;
-#endif
- default:
- return mode;
- }
-}
-
-/**
- * convert the general policy direction to the one defined in ipsec.h
- */
-static u_int8_t dir2kernel(policy_dir_t dir)
-{
- switch (dir)
- {
- case POLICY_IN:
- return IPSEC_DIR_INBOUND;
- case POLICY_OUT:
- return IPSEC_DIR_OUTBOUND;
-#ifdef HAVE_IPSEC_DIR_FWD
- case POLICY_FWD:
- return IPSEC_DIR_FWD;
-#endif
- default:
- return IPSEC_DIR_INVALID;
- }
-}
-
-#ifdef SADB_X_MIGRATE
-/**
- * convert the policy direction in ipsec.h to the general one.
- */
-static policy_dir_t kernel2dir(u_int8_t dir)
-{
- switch (dir)
- {
- case IPSEC_DIR_INBOUND:
- return POLICY_IN;
- case IPSEC_DIR_OUTBOUND:
- return POLICY_OUT;
-#ifdef HAVE_IPSEC_DIR_FWD
- case IPSEC_DIR_FWD:
- return POLICY_FWD;
-#endif
- default:
- return dir;
- }
-}
-#endif /*SADB_X_MIGRATE*/
-
-typedef struct kernel_algorithm_t kernel_algorithm_t;
-
-/**
- * Mapping of IKEv2 algorithms to PF_KEY algorithms
- */
-struct kernel_algorithm_t {
- /**
- * Identifier specified in IKEv2
- */
- int ikev2;
-
- /**
- * Identifier as defined in pfkeyv2.h
- */
- int kernel;
-};
-
-#define END_OF_LIST -1
-
-/**
- * Algorithms for encryption
- */
-static kernel_algorithm_t encryption_algs[] = {
-/* {ENCR_DES_IV64, 0 }, */
- {ENCR_DES, SADB_EALG_DESCBC },
- {ENCR_3DES, SADB_EALG_3DESCBC },
-/* {ENCR_RC5, 0 }, */
-/* {ENCR_IDEA, 0 }, */
- {ENCR_CAST, SADB_X_EALG_CASTCBC },
- {ENCR_BLOWFISH, SADB_X_EALG_BLOWFISHCBC },
-/* {ENCR_3IDEA, 0 }, */
-/* {ENCR_DES_IV32, 0 }, */
- {ENCR_NULL, SADB_EALG_NULL },
- {ENCR_AES_CBC, SADB_X_EALG_AESCBC },
-/* {ENCR_AES_CTR, SADB_X_EALG_AESCTR }, */
-/* {ENCR_AES_CCM_ICV8, SADB_X_EALG_AES_CCM_ICV8 }, */
-/* {ENCR_AES_CCM_ICV12, SADB_X_EALG_AES_CCM_ICV12 }, */
-/* {ENCR_AES_CCM_ICV16, SADB_X_EALG_AES_CCM_ICV16 }, */
-/* {ENCR_AES_GCM_ICV8, SADB_X_EALG_AES_GCM_ICV8 }, */
-/* {ENCR_AES_GCM_ICV12, SADB_X_EALG_AES_GCM_ICV12 }, */
-/* {ENCR_AES_GCM_ICV16, SADB_X_EALG_AES_GCM_ICV16 }, */
- {END_OF_LIST, 0 },
-};
-
-/**
- * Algorithms for integrity protection
- */
-static kernel_algorithm_t integrity_algs[] = {
- {AUTH_HMAC_MD5_96, SADB_AALG_MD5HMAC },
- {AUTH_HMAC_SHA1_96, SADB_AALG_SHA1HMAC },
- {AUTH_HMAC_SHA2_256_128, SADB_X_AALG_SHA2_256HMAC },
- {AUTH_HMAC_SHA2_384_192, SADB_X_AALG_SHA2_384HMAC },
- {AUTH_HMAC_SHA2_512_256, SADB_X_AALG_SHA2_512HMAC },
-/* {AUTH_DES_MAC, 0, }, */
-/* {AUTH_KPDK_MD5, 0, }, */
-#ifdef SADB_X_AALG_AES_XCBC_MAC
- {AUTH_AES_XCBC_96, SADB_X_AALG_AES_XCBC_MAC, },
-#endif
- {END_OF_LIST, 0, },
-};
-
-#if 0
-/**
- * Algorithms for IPComp, unused yet
- */
-static kernel_algorithm_t compression_algs[] = {
-/* {IPCOMP_OUI, 0 }, */
- {IPCOMP_DEFLATE, SADB_X_CALG_DEFLATE },
- {IPCOMP_LZS, SADB_X_CALG_LZS },
- {IPCOMP_LZJH, SADB_X_CALG_LZJH },
- {END_OF_LIST, 0 },
-};
-#endif
-
-/**
- * Look up a kernel algorithm ID and its key size
- */
-static int lookup_algorithm(kernel_algorithm_t *list, int ikev2)
-{
- while (list->ikev2 != END_OF_LIST)
- {
- if (ikev2 == list->ikev2)
- {
- return list->kernel;
- }
- list++;
- }
- return 0;
-}
-
-/**
- * add a host behind a sadb_address extension
- */
-static void host2ext(host_t *host, struct sadb_address *ext)
-{
- sockaddr_t *host_addr = host->get_sockaddr(host);
- socklen_t *len = host->get_sockaddr_len(host);
-#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
- host_addr->sa_len = *len;
-#endif
- memcpy((char*)(ext + 1), host_addr, *len);
- ext->sadb_address_len = PFKEY_LEN(sizeof(*ext) + *len);
-}
-
-/**
- * add a host to the given sadb_msg
- */
-static void add_addr_ext(struct sadb_msg *msg, host_t *host, u_int16_t type,
- u_int8_t proto, u_int8_t prefixlen)
-{
- struct sadb_address *addr = (struct sadb_address*)PFKEY_EXT_ADD_NEXT(msg);
- addr->sadb_address_exttype = type;
- addr->sadb_address_proto = proto;
- addr->sadb_address_prefixlen = prefixlen;
- host2ext(host, addr);
- PFKEY_EXT_ADD(msg, addr);
-}
-
-/**
- * adds an empty address extension to the given sadb_msg
- */
-static void add_anyaddr_ext(struct sadb_msg *msg, int family, u_int8_t type)
-{
- socklen_t len = (family == AF_INET) ? sizeof(struct sockaddr_in) :
- sizeof(struct sockaddr_in6);
- struct sadb_address *addr = (struct sadb_address*)PFKEY_EXT_ADD_NEXT(msg);
- addr->sadb_address_exttype = type;
- sockaddr_t *saddr = (sockaddr_t*)(addr + 1);
- saddr->sa_family = family;
-#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
- saddr->sa_len = len;
-#endif
- addr->sadb_address_len = PFKEY_LEN(sizeof(*addr) + len);
- PFKEY_EXT_ADD(msg, addr);
-}
-
-#ifdef HAVE_NATT
-/**
- * add udp encap extensions to a sadb_msg
- */
-static void add_encap_ext(struct sadb_msg *msg, host_t *src, host_t *dst)
-{
- struct sadb_x_nat_t_type* nat_type;
- struct sadb_x_nat_t_port* nat_port;
-
- nat_type = (struct sadb_x_nat_t_type*)PFKEY_EXT_ADD_NEXT(msg);
- nat_type->sadb_x_nat_t_type_exttype = SADB_X_EXT_NAT_T_TYPE;
- nat_type->sadb_x_nat_t_type_len = PFKEY_LEN(sizeof(struct sadb_x_nat_t_type));
- nat_type->sadb_x_nat_t_type_type = UDP_ENCAP_ESPINUDP;
- PFKEY_EXT_ADD(msg, nat_type);
-
- nat_port = (struct sadb_x_nat_t_port*)PFKEY_EXT_ADD_NEXT(msg);
- nat_port->sadb_x_nat_t_port_exttype = SADB_X_EXT_NAT_T_SPORT;
- nat_port->sadb_x_nat_t_port_len = PFKEY_LEN(sizeof(struct sadb_x_nat_t_port));
- nat_port->sadb_x_nat_t_port_port = htons(src->get_port(src));
- PFKEY_EXT_ADD(msg, nat_port);
-
- nat_port = (struct sadb_x_nat_t_port*)PFKEY_EXT_ADD_NEXT(msg);
- nat_port->sadb_x_nat_t_port_exttype = SADB_X_EXT_NAT_T_DPORT;
- nat_port->sadb_x_nat_t_port_len = PFKEY_LEN(sizeof(struct sadb_x_nat_t_port));
- nat_port->sadb_x_nat_t_port_port = htons(dst->get_port(dst));
- PFKEY_EXT_ADD(msg, nat_port);
-}
-#endif /*HAVE_NATT*/
-
-/**
- * Convert a sadb_address to a traffic_selector
- */
-static traffic_selector_t* sadb_address2ts(struct sadb_address *address)
-{
- traffic_selector_t *ts;
- host_t *host;
-
- /* The Linux 2.6 kernel does not set the protocol and port information
- * in the src and dst sadb_address extensions of the SADB_ACQUIRE message.
- */
- host = host_create_from_sockaddr((sockaddr_t*)&address[1]) ;
- ts = traffic_selector_create_from_subnet(host, address->sadb_address_prefixlen,
- address->sadb_address_proto, host->get_port(host));
- return ts;
-}
-
-/**
- * Parses a pfkey message received from the kernel
- */
-static status_t parse_pfkey_message(struct sadb_msg *msg, pfkey_msg_t *out)
-{
- struct sadb_ext* ext;
- size_t len;
-
- memset(out, 0, sizeof(pfkey_msg_t));
- out->msg = msg;
-
- len = msg->sadb_msg_len;
- len -= PFKEY_LEN(sizeof(struct sadb_msg));
-
- ext = (struct sadb_ext*)(((char*)msg) + sizeof(struct sadb_msg));
-
- while (len >= PFKEY_LEN(sizeof(struct sadb_ext)))
- {
- DBG3(DBG_KNL, " %N", sadb_ext_type_names, ext->sadb_ext_type);
- if (ext->sadb_ext_len < PFKEY_LEN(sizeof(struct sadb_ext)) ||
- ext->sadb_ext_len > len)
- {
- DBG1(DBG_KNL, "length of %N extension is invalid",
- sadb_ext_type_names, ext->sadb_ext_type);
- break;
- }
-
- if ((ext->sadb_ext_type > SADB_EXT_MAX) || (!ext->sadb_ext_type))
- {
- DBG1(DBG_KNL, "type of PF_KEY extension (%d) is invalid", ext->sadb_ext_type);
- break;
- }
-
- if (out->ext[ext->sadb_ext_type])
- {
- DBG1(DBG_KNL, "duplicate %N extension",
- sadb_ext_type_names, ext->sadb_ext_type);
- break;
- }
-
- out->ext[ext->sadb_ext_type] = ext;
- ext = PFKEY_EXT_NEXT_LEN(ext, len);
- }
-
- if (len)
- {
- DBG1(DBG_KNL, "PF_KEY message length is invalid");
- return FAILED;
- }
-
- return SUCCESS;
-}
-
-/**
- * Send a message to a specific PF_KEY socket and handle the response.
- */
-static status_t pfkey_send_socket(private_kernel_pfkey_ipsec_t *this, int socket,
- struct sadb_msg *in, struct sadb_msg **out, size_t *out_len)
-{
- unsigned char buf[PFKEY_BUFFER_SIZE];
- struct sadb_msg *msg;
- int in_len, len;
-
- this->mutex_pfkey->lock(this->mutex_pfkey);
-
- /* FIXME: our usage of sequence numbers is probably wrong. check RFC 2367,
- * in particular the behavior in response to an SADB_ACQUIRE. */
- in->sadb_msg_seq = ++this->seq;
- in->sadb_msg_pid = getpid();
-
- in_len = PFKEY_USER_LEN(in->sadb_msg_len);
-
- while (TRUE)
- {
- len = send(socket, in, in_len, 0);
-
- if (len != in_len)
- {
- if (errno == EINTR)
- {
- /* interrupted, try again */
- continue;
- }
- this->mutex_pfkey->unlock(this->mutex_pfkey);
- DBG1(DBG_KNL, "error sending to PF_KEY socket: %s", strerror(errno));
- return FAILED;
- }
- break;
- }
-
- while (TRUE)
- {
- msg = (struct sadb_msg*)buf;
-
- len = recv(socket, buf, sizeof(buf), 0);
-
- if (len < 0)
- {
- if (errno == EINTR)
- {
- DBG1(DBG_KNL, "got interrupted");
- /* interrupted, try again */
- continue;
- }
- DBG1(DBG_KNL, "error reading from PF_KEY socket: %s", strerror(errno));
- this->mutex_pfkey->unlock(this->mutex_pfkey);
- return FAILED;
- }
- if (len < sizeof(struct sadb_msg) ||
- msg->sadb_msg_len < PFKEY_LEN(sizeof(struct sadb_msg)))
- {
- DBG1(DBG_KNL, "received corrupted PF_KEY message");
- this->mutex_pfkey->unlock(this->mutex_pfkey);
- return FAILED;
- }
- if (msg->sadb_msg_len > len / PFKEY_ALIGNMENT)
- {
- DBG1(DBG_KNL, "buffer was too small to receive the complete PF_KEY message");
- this->mutex_pfkey->unlock(this->mutex_pfkey);
- return FAILED;
- }
- if (msg->sadb_msg_pid != in->sadb_msg_pid)
- {
- DBG2(DBG_KNL, "received PF_KEY message is not intended for us");
- continue;
- }
- if (msg->sadb_msg_seq != this->seq)
- {
- DBG1(DBG_KNL, "received PF_KEY message with unexpected sequence "
- "number, was %d expected %d", msg->sadb_msg_seq, this->seq);
- if (msg->sadb_msg_seq == 0)
- {
- /* FreeBSD and Mac OS X do this for the response to
- * SADB_X_SPDGET (but not for the response to SADB_GET).
- * FreeBSD: 'key_spdget' in /usr/src/sys/netipsec/key.c. */
- }
- else if (msg->sadb_msg_seq < this->seq)
- {
- continue;
- }
- else
- {
- this->mutex_pfkey->unlock(this->mutex_pfkey);
- return FAILED;
- }
- }
- if (msg->sadb_msg_type != in->sadb_msg_type)
- {
- DBG2(DBG_KNL, "received PF_KEY message of wrong type, "
- "was %d expected %d, ignoring",
- msg->sadb_msg_type, in->sadb_msg_type);
- }
- break;
- }
-
- *out_len = len;
- *out = (struct sadb_msg*)malloc(len);
- memcpy(*out, buf, len);
-
- this->mutex_pfkey->unlock(this->mutex_pfkey);
-
- return SUCCESS;
-}
-
-/**
- * Send a message to the default PF_KEY socket and handle the response.
- */
-static status_t pfkey_send(private_kernel_pfkey_ipsec_t *this,
- struct sadb_msg *in, struct sadb_msg **out, size_t *out_len)
-{
- return pfkey_send_socket(this, this->socket, in, out, out_len);
-}
-
-/**
- * Process a SADB_ACQUIRE message from the kernel
- */
-static void process_acquire(private_kernel_pfkey_ipsec_t *this, struct sadb_msg* msg)
-{
- pfkey_msg_t response;
- u_int32_t index, reqid = 0;
- traffic_selector_t *src_ts, *dst_ts;
- policy_entry_t *policy;
- job_t *job;
-
- switch (msg->sadb_msg_satype)
- {
- case SADB_SATYPE_UNSPEC:
- case SADB_SATYPE_ESP:
- case SADB_SATYPE_AH:
- break;
- default:
- /* acquire for AH/ESP only */
- return;
- }
- DBG2(DBG_KNL, "received an SADB_ACQUIRE");
-
- if (parse_pfkey_message(msg, &response) != SUCCESS)
- {
- DBG1(DBG_KNL, "parsing SADB_ACQUIRE from kernel failed");
- return;
- }
-
- index = response.x_policy->sadb_x_policy_id;
- this->mutex->lock(this->mutex);
- if (this->policies->find_first(this->policies,
- (linked_list_match_t)policy_entry_match_byindex, (void**)&policy, &index) == SUCCESS)
- {
- reqid = policy->reqid;
- }
- else
- {
- DBG1(DBG_KNL, "received an SADB_ACQUIRE with policy id %d but no matching policy found",
- index);
- }
- src_ts = sadb_address2ts(response.src);
- dst_ts = sadb_address2ts(response.dst);
- this->mutex->unlock(this->mutex);
-
- DBG1(DBG_KNL, "creating acquire job for policy %R === %R with reqid {%u}",
- src_ts, dst_ts, reqid);
- job = (job_t*)acquire_job_create(reqid, src_ts, dst_ts);
- charon->processor->queue_job(charon->processor, job);
-}
-
-/**
- * Process a SADB_EXPIRE message from the kernel
- */
-static void process_expire(private_kernel_pfkey_ipsec_t *this, struct sadb_msg* msg)
-{
- pfkey_msg_t response;
- protocol_id_t protocol;
- u_int32_t spi, reqid;
- bool hard;
- job_t *job;
-
- DBG2(DBG_KNL, "received an SADB_EXPIRE");
-
- if (parse_pfkey_message(msg, &response) != SUCCESS)
- {
- DBG1(DBG_KNL, "parsing SADB_EXPIRE from kernel failed");
- return;
- }
-
- protocol = proto_satype2ike(msg->sadb_msg_satype);
- spi = response.sa->sadb_sa_spi;
- reqid = response.x_sa2->sadb_x_sa2_reqid;
- hard = response.lft_hard != NULL;
-
- if (protocol != PROTO_ESP && protocol != PROTO_AH)
- {
- DBG2(DBG_KNL, "ignoring SADB_EXPIRE for SA with SPI %.8x and reqid {%u} "
- "which is not a CHILD_SA", ntohl(spi), reqid);
- return;
- }
-
- DBG1(DBG_KNL, "creating %s job for %N CHILD_SA with SPI %.8x and reqid {%u}",
- hard ? "delete" : "rekey", protocol_id_names,
- protocol, ntohl(spi), reqid);
- if (hard)
- {
- job = (job_t*)delete_child_sa_job_create(reqid, protocol, spi);
- }
- else
- {
- job = (job_t*)rekey_child_sa_job_create(reqid, protocol, spi);
- }
- charon->processor->queue_job(charon->processor, job);
-}
-
-#ifdef SADB_X_MIGRATE
-/**
- * Process a SADB_X_MIGRATE message from the kernel
- */
-static void process_migrate(private_kernel_pfkey_ipsec_t *this, struct sadb_msg* msg)
-{
- pfkey_msg_t response;
- traffic_selector_t *src_ts, *dst_ts;
- policy_dir_t dir;
- u_int32_t reqid = 0;
- host_t *local = NULL, *remote = NULL;
- job_t *job;
-
- DBG2(DBG_KNL, "received an SADB_X_MIGRATE");
-
- if (parse_pfkey_message(msg, &response) != SUCCESS)
- {
- DBG1(DBG_KNL, "parsing SADB_X_MIGRATE from kernel failed");
- return;
- }
- src_ts = sadb_address2ts(response.src);
- dst_ts = sadb_address2ts(response.dst);
- dir = kernel2dir(response.x_policy->sadb_x_policy_dir);
- DBG2(DBG_KNL, " policy %R === %R %N, id %u", src_ts, dst_ts,
- policy_dir_names, dir);
-
- /* SADB_X_EXT_KMADDRESS is not present in unpatched kernels < 2.6.28 */
- if (response.x_kmaddress)
- {
- sockaddr_t *local_addr, *remote_addr;
- u_int32_t local_len;
-
- local_addr = (sockaddr_t*)&response.x_kmaddress[1];
- local = host_create_from_sockaddr(local_addr);
- local_len = (local_addr->sa_family == AF_INET6)?
- sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in);
- remote_addr = (sockaddr_t*)((u_int8_t*)local_addr + local_len);
- remote = host_create_from_sockaddr(remote_addr);
- DBG2(DBG_KNL, " kmaddress: %H...%H", local, remote);
- }
-
- if (src_ts && dst_ts && local && remote)
- {
- DBG1(DBG_KNL, "creating migrate job for policy %R === %R %N with reqid {%u}",
- src_ts, dst_ts, policy_dir_names, dir, reqid, local);
- job = (job_t*)migrate_job_create(reqid, src_ts, dst_ts, dir,
- local, remote);
- charon->processor->queue_job(charon->processor, job);
- }
- else
- {
- DESTROY_IF(src_ts);
- DESTROY_IF(dst_ts);
- DESTROY_IF(local);
- DESTROY_IF(remote);
- }
-}
-#endif /*SADB_X_MIGRATE*/
-
-#ifdef HAVE_NATT
-/**
- * Process a SADB_X_NAT_T_NEW_MAPPING message from the kernel
- */
-static void process_mapping(private_kernel_pfkey_ipsec_t *this, struct sadb_msg* msg)
-{
- pfkey_msg_t response;
- u_int32_t spi, reqid;
- host_t *host;
- job_t *job;
-
- DBG2(DBG_KNL, "received an SADB_X_NAT_T_NEW_MAPPING");
-
- if (parse_pfkey_message(msg, &response) != SUCCESS)
- {
- DBG1(DBG_KNL, "parsing SADB_X_NAT_T_NEW_MAPPING from kernel failed");
- return;
- }
-
- if (!response.x_sa2)
- {
- DBG1(DBG_KNL, "received SADB_X_NAT_T_NEW_MAPPING is missing required information");
- return;
- }
-
- spi = response.sa->sadb_sa_spi;
- reqid = response.x_sa2->sadb_x_sa2_reqid;
-
- if (proto_satype2ike(msg->sadb_msg_satype) == PROTO_ESP)
- {
- sockaddr_t *sa = (sockaddr_t*)(response.dst + 1);
- switch (sa->sa_family)
- {
- case AF_INET:
- {
- struct sockaddr_in *sin = (struct sockaddr_in*)sa;
- sin->sin_port = htons(response.x_natt_dport->sadb_x_nat_t_port_port);
- }
- case AF_INET6:
- {
- struct sockaddr_in6 *sin6 = (struct sockaddr_in6*)sa;
- sin6->sin6_port = htons(response.x_natt_dport->sadb_x_nat_t_port_port);
- }
- default:
- break;
- }
- host = host_create_from_sockaddr(sa);
- if (host)
- {
- DBG1(DBG_KNL, "NAT mappings of ESP CHILD_SA with SPI %.8x and "
- "reqid {%u} changed, queuing update job", ntohl(spi), reqid);
- job = (job_t*)update_sa_job_create(reqid, host);
- charon->processor->queue_job(charon->processor, job);
- }
- }
-}
-#endif /*HAVE_NATT*/
-
-/**
- * Receives events from kernel
- */
-static job_requeue_t receive_events(private_kernel_pfkey_ipsec_t *this)
-{
- unsigned char buf[PFKEY_BUFFER_SIZE];
- struct sadb_msg *msg = (struct sadb_msg*)buf;
- int len;
- bool oldstate;
-
- oldstate = thread_cancelability(TRUE);
- len = recvfrom(this->socket_events, buf, sizeof(buf), 0, NULL, 0);
- thread_cancelability(oldstate);
-
- if (len < 0)
- {
- switch (errno)
- {
- case EINTR:
- /* interrupted, try again */
- return JOB_REQUEUE_DIRECT;
- case EAGAIN:
- /* no data ready, select again */
- return JOB_REQUEUE_DIRECT;
- default:
- DBG1(DBG_KNL, "unable to receive from PF_KEY event socket");
- sleep(1);
- return JOB_REQUEUE_FAIR;
- }
- }
-
- if (len < sizeof(struct sadb_msg) ||
- msg->sadb_msg_len < PFKEY_LEN(sizeof(struct sadb_msg)))
- {
- DBG2(DBG_KNL, "received corrupted PF_KEY message");
- return JOB_REQUEUE_DIRECT;
- }
- if (msg->sadb_msg_pid != 0)
- { /* not from kernel. not interested, try another one */
- return JOB_REQUEUE_DIRECT;
- }
- if (msg->sadb_msg_len > len / PFKEY_ALIGNMENT)
- {
- DBG1(DBG_KNL, "buffer was too small to receive the complete PF_KEY message");
- return JOB_REQUEUE_DIRECT;
- }
-
- switch (msg->sadb_msg_type)
- {
- case SADB_ACQUIRE:
- process_acquire(this, msg);
- break;
- case SADB_EXPIRE:
- process_expire(this, msg);
- break;
-#ifdef SADB_X_MIGRATE
- case SADB_X_MIGRATE:
- process_migrate(this, msg);
- break;
-#endif /*SADB_X_MIGRATE*/
-#ifdef HAVE_NATT
- case SADB_X_NAT_T_NEW_MAPPING:
- process_mapping(this, msg);
- break;
-#endif /*HAVE_NATT*/
- default:
- break;
- }
-
- return JOB_REQUEUE_DIRECT;
-}
-
-/**
- * Implementation of kernel_interface_t.get_spi.
- */
-static status_t get_spi(private_kernel_pfkey_ipsec_t *this,
- host_t *src, host_t *dst,
- protocol_id_t protocol, u_int32_t reqid,
- u_int32_t *spi)
-{
- unsigned char request[PFKEY_BUFFER_SIZE];
- struct sadb_msg *msg, *out;
- struct sadb_x_sa2 *sa2;
- struct sadb_spirange *range;
- pfkey_msg_t response;
- u_int32_t received_spi = 0;
- size_t len;
-
- memset(&request, 0, sizeof(request));
-
- msg = (struct sadb_msg*)request;
- msg->sadb_msg_version = PF_KEY_V2;
- msg->sadb_msg_type = SADB_GETSPI;
- msg->sadb_msg_satype = proto_ike2satype(protocol);
- msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg));
-
- sa2 = (struct sadb_x_sa2*)PFKEY_EXT_ADD_NEXT(msg);
- sa2->sadb_x_sa2_exttype = SADB_X_EXT_SA2;
- sa2->sadb_x_sa2_len = PFKEY_LEN(sizeof(struct sadb_spirange));
- sa2->sadb_x_sa2_reqid = reqid;
- PFKEY_EXT_ADD(msg, sa2);
-
- add_addr_ext(msg, src, SADB_EXT_ADDRESS_SRC, 0, 0);
- add_addr_ext(msg, dst, SADB_EXT_ADDRESS_DST, 0, 0);
-
- range = (struct sadb_spirange*)PFKEY_EXT_ADD_NEXT(msg);
- range->sadb_spirange_exttype = SADB_EXT_SPIRANGE;
- range->sadb_spirange_len = PFKEY_LEN(sizeof(struct sadb_spirange));
- range->sadb_spirange_min = 0xc0000000;
- range->sadb_spirange_max = 0xcFFFFFFF;
- PFKEY_EXT_ADD(msg, range);
-
- if (pfkey_send(this, msg, &out, &len) == SUCCESS)
- {
- if (out->sadb_msg_errno)
- {
- DBG1(DBG_KNL, "allocating SPI failed: %s (%d)",
- strerror(out->sadb_msg_errno), out->sadb_msg_errno);
- }
- else if (parse_pfkey_message(out, &response) == SUCCESS)
- {
- received_spi = response.sa->sadb_sa_spi;
- }
- free(out);
- }
-
- if (received_spi == 0)
- {
- return FAILED;
- }
-
- *spi = received_spi;
- return SUCCESS;
-}
-
-/**
- * Implementation of kernel_interface_t.get_cpi.
- */
-static status_t get_cpi(private_kernel_pfkey_ipsec_t *this,
- host_t *src, host_t *dst,
- u_int32_t reqid, u_int16_t *cpi)
-{
- return FAILED;
-}
-
-/**
- * Implementation of kernel_interface_t.add_sa.
- */
-static status_t add_sa(private_kernel_pfkey_ipsec_t *this,
- host_t *src, host_t *dst, u_int32_t spi,
- protocol_id_t protocol, u_int32_t reqid,
- lifetime_cfg_t *lifetime,
- u_int16_t enc_alg, chunk_t enc_key,
- u_int16_t int_alg, chunk_t int_key,
- ipsec_mode_t mode, u_int16_t ipcomp, u_int16_t cpi,
- bool encap, bool inbound, traffic_selector_t *src_ts,
- traffic_selector_t *dst_ts)
-{
- unsigned char request[PFKEY_BUFFER_SIZE];
- struct sadb_msg *msg, *out;
- struct sadb_sa *sa;
- struct sadb_x_sa2 *sa2;
- struct sadb_lifetime *lft;
- struct sadb_key *key;
- size_t len;
-
- memset(&request, 0, sizeof(request));
-
- DBG2(DBG_KNL, "adding SAD entry with SPI %.8x and reqid {%u}", ntohl(spi), reqid);
-
- msg = (struct sadb_msg*)request;
- msg->sadb_msg_version = PF_KEY_V2;
- msg->sadb_msg_type = inbound ? SADB_UPDATE : SADB_ADD;
- msg->sadb_msg_satype = proto_ike2satype(protocol);
- msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg));
-
-#ifdef __APPLE__
- if (encap)
- {
- struct sadb_sa_2 *sa_2;
- sa_2 = (struct sadb_sa_2*)PFKEY_EXT_ADD_NEXT(msg);
- sa_2->sadb_sa_natt_port = dst->get_port(dst);
- sa = &sa_2->sa;
- sa->sadb_sa_flags |= SADB_X_EXT_NATT;
- len = sizeof(struct sadb_sa_2);
- }
- else
-#endif
- {
- sa = (struct sadb_sa*)PFKEY_EXT_ADD_NEXT(msg);
- len = sizeof(struct sadb_sa);
- }
- sa->sadb_sa_exttype = SADB_EXT_SA;
- sa->sadb_sa_len = PFKEY_LEN(len);
- sa->sadb_sa_spi = spi;
- sa->sadb_sa_replay = (protocol == IPPROTO_COMP) ? 0 : 32;
- sa->sadb_sa_auth = lookup_algorithm(integrity_algs, int_alg);
- sa->sadb_sa_encrypt = lookup_algorithm(encryption_algs, enc_alg);
- PFKEY_EXT_ADD(msg, sa);
-
- sa2 = (struct sadb_x_sa2*)PFKEY_EXT_ADD_NEXT(msg);
- sa2->sadb_x_sa2_exttype = SADB_X_EXT_SA2;
- sa2->sadb_x_sa2_len = PFKEY_LEN(sizeof(struct sadb_spirange));
- sa2->sadb_x_sa2_mode = mode2kernel(mode);
- sa2->sadb_x_sa2_reqid = reqid;
- PFKEY_EXT_ADD(msg, sa2);
-
- add_addr_ext(msg, src, SADB_EXT_ADDRESS_SRC, 0, 0);
- add_addr_ext(msg, dst, SADB_EXT_ADDRESS_DST, 0, 0);
-
- lft = (struct sadb_lifetime*)PFKEY_EXT_ADD_NEXT(msg);
- lft->sadb_lifetime_exttype = SADB_EXT_LIFETIME_SOFT;
- lft->sadb_lifetime_len = PFKEY_LEN(sizeof(struct sadb_lifetime));
- lft->sadb_lifetime_allocations = lifetime->packets.rekey;
- lft->sadb_lifetime_bytes = lifetime->bytes.rekey;
- lft->sadb_lifetime_addtime = lifetime->time.rekey;
- lft->sadb_lifetime_usetime = 0; /* we only use addtime */
- PFKEY_EXT_ADD(msg, lft);
-
- lft = (struct sadb_lifetime*)PFKEY_EXT_ADD_NEXT(msg);
- lft->sadb_lifetime_exttype = SADB_EXT_LIFETIME_HARD;
- lft->sadb_lifetime_len = PFKEY_LEN(sizeof(struct sadb_lifetime));
- lft->sadb_lifetime_allocations = lifetime->packets.life;
- lft->sadb_lifetime_bytes = lifetime->bytes.life;
- lft->sadb_lifetime_addtime = lifetime->time.life;
- lft->sadb_lifetime_usetime = 0; /* we only use addtime */
- PFKEY_EXT_ADD(msg, lft);
-
- if (enc_alg != ENCR_UNDEFINED)
- {
- if (!sa->sadb_sa_encrypt)
- {
- DBG1(DBG_KNL, "algorithm %N not supported by kernel!",
- encryption_algorithm_names, enc_alg);
- return FAILED;
- }
- DBG2(DBG_KNL, " using encryption algorithm %N with key size %d",
- encryption_algorithm_names, enc_alg, enc_key.len * 8);
-
- key = (struct sadb_key*)PFKEY_EXT_ADD_NEXT(msg);
- key->sadb_key_exttype = SADB_EXT_KEY_ENCRYPT;
- key->sadb_key_bits = enc_key.len * 8;
- key->sadb_key_len = PFKEY_LEN(sizeof(struct sadb_key) + enc_key.len);
- memcpy(key + 1, enc_key.ptr, enc_key.len);
-
- PFKEY_EXT_ADD(msg, key);
- }
-
- if (int_alg != AUTH_UNDEFINED)
- {
- if (!sa->sadb_sa_auth)
- {
- DBG1(DBG_KNL, "algorithm %N not supported by kernel!",
- integrity_algorithm_names, int_alg);
- return FAILED;
- }
- DBG2(DBG_KNL, " using integrity algorithm %N with key size %d",
- integrity_algorithm_names, int_alg, int_key.len * 8);
-
- key = (struct sadb_key*)PFKEY_EXT_ADD_NEXT(msg);
- key->sadb_key_exttype = SADB_EXT_KEY_AUTH;
- key->sadb_key_bits = int_key.len * 8;
- key->sadb_key_len = PFKEY_LEN(sizeof(struct sadb_key) + int_key.len);
- memcpy(key + 1, int_key.ptr, int_key.len);
-
- PFKEY_EXT_ADD(msg, key);
- }
-
- if (ipcomp != IPCOMP_NONE)
- {
- /*TODO*/
- }
-
-#ifdef HAVE_NATT
- if (encap)
- {
- add_encap_ext(msg, src, dst);
- }
-#endif /*HAVE_NATT*/
-
- if (pfkey_send(this, msg, &out, &len) != SUCCESS)
- {
- DBG1(DBG_KNL, "unable to add SAD entry with SPI %.8x", ntohl(spi));
- return FAILED;
- }
- else if (out->sadb_msg_errno)
- {
- DBG1(DBG_KNL, "unable to add SAD entry with SPI %.8x: %s (%d)",
- ntohl(spi), strerror(out->sadb_msg_errno), out->sadb_msg_errno);
- free(out);
- return FAILED;
- }
-
- free(out);
- return SUCCESS;
-}
-
-/**
- * Implementation of kernel_interface_t.update_sa.
- */
-static status_t update_sa(private_kernel_pfkey_ipsec_t *this,
- u_int32_t spi, protocol_id_t protocol, u_int16_t cpi,
- host_t *src, host_t *dst,
- host_t *new_src, host_t *new_dst,
- bool encap, bool new_encap)
-{
- unsigned char request[PFKEY_BUFFER_SIZE];
- struct sadb_msg *msg, *out;
- struct sadb_sa *sa;
- pfkey_msg_t response;
- size_t len;
-
- /* we can't update the SA if any of the ip addresses have changed.
- * that's because we can't use SADB_UPDATE and by deleting and readding the
- * SA the sequence numbers would get lost */
- if (!src->ip_equals(src, new_src) ||
- !dst->ip_equals(dst, new_dst))
- {
- DBG1(DBG_KNL, "unable to update SAD entry with SPI %.8x: address changes"
- " are not supported", ntohl(spi));
- return NOT_SUPPORTED;
- }
-
- memset(&request, 0, sizeof(request));
-
- DBG2(DBG_KNL, "querying SAD entry with SPI %.8x", ntohl(spi));
-
- msg = (struct sadb_msg*)request;
- msg->sadb_msg_version = PF_KEY_V2;
- msg->sadb_msg_type = SADB_GET;
- msg->sadb_msg_satype = proto_ike2satype(protocol);
- msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg));
-
- sa = (struct sadb_sa*)PFKEY_EXT_ADD_NEXT(msg);
- sa->sadb_sa_exttype = SADB_EXT_SA;
- sa->sadb_sa_len = PFKEY_LEN(sizeof(struct sadb_sa));
- sa->sadb_sa_spi = spi;
- PFKEY_EXT_ADD(msg, sa);
-
- /* the kernel wants a SADB_EXT_ADDRESS_SRC to be present even though
- * it is not used for anything. */
- add_anyaddr_ext(msg, dst->get_family(dst), SADB_EXT_ADDRESS_SRC);
- add_addr_ext(msg, dst, SADB_EXT_ADDRESS_DST, 0, 0);
-
- if (pfkey_send(this, msg, &out, &len) != SUCCESS)
- {
- DBG1(DBG_KNL, "unable to query SAD entry with SPI %.8x",
- ntohl(spi));
- return FAILED;
- }
- else if (out->sadb_msg_errno)
- {
- DBG1(DBG_KNL, "unable to query SAD entry with SPI %.8x: %s (%d)",
- ntohl(spi), strerror(out->sadb_msg_errno), out->sadb_msg_errno);
- free(out);
- return FAILED;
- }
- else if (parse_pfkey_message(out, &response) != SUCCESS)
- {
- DBG1(DBG_KNL, "unable to query SAD entry with SPI %.8x: parsing response "
- "from kernel failed", ntohl(spi));
- free(out);
- return FAILED;
- }
-
- DBG2(DBG_KNL, "updating SAD entry with SPI %.8x from %#H..%#H to %#H..%#H",
- ntohl(spi), src, dst, new_src, new_dst);
-
- memset(&request, 0, sizeof(request));
-
- msg = (struct sadb_msg*)request;
- msg->sadb_msg_version = PF_KEY_V2;
- msg->sadb_msg_type = SADB_UPDATE;
- msg->sadb_msg_satype = proto_ike2satype(protocol);
- msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg));
-
-#ifdef __APPLE__
- {
- struct sadb_sa_2 *sa_2;
- sa_2 = (struct sadb_sa_2*)PFKEY_EXT_ADD_NEXT(msg);
- sa_2->sa.sadb_sa_len = PFKEY_LEN(sizeof(struct sadb_sa_2));
- memcpy(&sa_2->sa, response.sa, sizeof(struct sadb_sa));
- if (encap)
- {
- sa_2->sadb_sa_natt_port = new_dst->get_port(new_dst);
- sa_2->sa.sadb_sa_flags |= SADB_X_EXT_NATT;
- }
- }
-#else
- PFKEY_EXT_COPY(msg, response.sa);
-#endif
- PFKEY_EXT_COPY(msg, response.x_sa2);
-
- PFKEY_EXT_COPY(msg, response.src);
- PFKEY_EXT_COPY(msg, response.dst);
-
- PFKEY_EXT_COPY(msg, response.lft_soft);
- PFKEY_EXT_COPY(msg, response.lft_hard);
-
- if (response.key_encr)
- {
- PFKEY_EXT_COPY(msg, response.key_encr);
- }
-
- if (response.key_auth)
- {
- PFKEY_EXT_COPY(msg, response.key_auth);
- }
-
-#ifdef HAVE_NATT
- if (new_encap)
- {
- add_encap_ext(msg, new_src, new_dst);
- }
-#endif /*HAVE_NATT*/
-
- free(out);
-
- if (pfkey_send(this, msg, &out, &len) != SUCCESS)
- {
- DBG1(DBG_KNL, "unable to update SAD entry with SPI %.8x", ntohl(spi));
- return FAILED;
- }
- else if (out->sadb_msg_errno)
- {
- DBG1(DBG_KNL, "unable to update SAD entry with SPI %.8x: %s (%d)",
- ntohl(spi), strerror(out->sadb_msg_errno), out->sadb_msg_errno);
- free(out);
- return FAILED;
- }
- free(out);
-
- return SUCCESS;
-}
-
-/**
- * Implementation of kernel_interface_t.query_sa.
- */
-static status_t query_sa(private_kernel_pfkey_ipsec_t *this, host_t *src,
- host_t *dst, u_int32_t spi, protocol_id_t protocol,
- u_int64_t *bytes)
-{
- unsigned char request[PFKEY_BUFFER_SIZE];
- struct sadb_msg *msg, *out;
- struct sadb_sa *sa;
- pfkey_msg_t response;
- size_t len;
-
- memset(&request, 0, sizeof(request));
-
- DBG2(DBG_KNL, "querying SAD entry with SPI %.8x", ntohl(spi));
-
- msg = (struct sadb_msg*)request;
- msg->sadb_msg_version = PF_KEY_V2;
- msg->sadb_msg_type = SADB_GET;
- msg->sadb_msg_satype = proto_ike2satype(protocol);
- msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg));
-
- sa = (struct sadb_sa*)PFKEY_EXT_ADD_NEXT(msg);
- sa->sadb_sa_exttype = SADB_EXT_SA;
- sa->sadb_sa_len = PFKEY_LEN(sizeof(struct sadb_sa));
- sa->sadb_sa_spi = spi;
- PFKEY_EXT_ADD(msg, sa);
-
- /* the Linux Kernel doesn't care for the src address, but other systems do
- * (e.g. FreeBSD)
- */
- add_addr_ext(msg, src, SADB_EXT_ADDRESS_SRC, 0, 0);
- add_addr_ext(msg, dst, SADB_EXT_ADDRESS_DST, 0, 0);
-
- if (pfkey_send(this, msg, &out, &len) != SUCCESS)
- {
- DBG1(DBG_KNL, "unable to query SAD entry with SPI %.8x", ntohl(spi));
- return FAILED;
- }
- else if (out->sadb_msg_errno)
- {
- DBG1(DBG_KNL, "unable to query SAD entry with SPI %.8x: %s (%d)",
- ntohl(spi), strerror(out->sadb_msg_errno), out->sadb_msg_errno);
- free(out);
- return FAILED;
- }
- else if (parse_pfkey_message(out, &response) != SUCCESS)
- {
- DBG1(DBG_KNL, "unable to query SAD entry with SPI %.8x", ntohl(spi));
- free(out);
- return FAILED;
- }
- *bytes = response.lft_current->sadb_lifetime_bytes;
-
- free(out);
- return SUCCESS;
-}
-
-/**
- * Implementation of kernel_interface_t.del_sa.
- */
-static status_t del_sa(private_kernel_pfkey_ipsec_t *this, host_t *src,
- host_t *dst, u_int32_t spi, protocol_id_t protocol,
- u_int16_t cpi)
-{
- unsigned char request[PFKEY_BUFFER_SIZE];
- struct sadb_msg *msg, *out;
- struct sadb_sa *sa;
- size_t len;
-
- memset(&request, 0, sizeof(request));
-
- DBG2(DBG_KNL, "deleting SAD entry with SPI %.8x", ntohl(spi));
-
- msg = (struct sadb_msg*)request;
- msg->sadb_msg_version = PF_KEY_V2;
- msg->sadb_msg_type = SADB_DELETE;
- msg->sadb_msg_satype = proto_ike2satype(protocol);
- msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg));
-
- sa = (struct sadb_sa*)PFKEY_EXT_ADD_NEXT(msg);
- sa->sadb_sa_exttype = SADB_EXT_SA;
- sa->sadb_sa_len = PFKEY_LEN(sizeof(struct sadb_sa));
- sa->sadb_sa_spi = spi;
- PFKEY_EXT_ADD(msg, sa);
-
- /* the Linux Kernel doesn't care for the src address, but other systems do
- * (e.g. FreeBSD)
- */
- add_addr_ext(msg, src, SADB_EXT_ADDRESS_SRC, 0, 0);
- add_addr_ext(msg, dst, SADB_EXT_ADDRESS_DST, 0, 0);
-
- if (pfkey_send(this, msg, &out, &len) != SUCCESS)
- {
- DBG1(DBG_KNL, "unable to delete SAD entry with SPI %.8x", ntohl(spi));
- return FAILED;
- }
- else if (out->sadb_msg_errno)
- {
- DBG1(DBG_KNL, "unable to delete SAD entry with SPI %.8x: %s (%d)",
- ntohl(spi), strerror(out->sadb_msg_errno), out->sadb_msg_errno);
- free(out);
- return FAILED;
- }
-
- DBG2(DBG_KNL, "deleted SAD entry with SPI %.8x", ntohl(spi));
- free(out);
- return SUCCESS;
-}
-
-/**
- * Implementation of kernel_interface_t.add_policy.
- */
-static status_t add_policy(private_kernel_pfkey_ipsec_t *this,
- host_t *src, host_t *dst,
- traffic_selector_t *src_ts,
- traffic_selector_t *dst_ts,
- policy_dir_t direction, u_int32_t spi,
- protocol_id_t protocol, u_int32_t reqid,
- ipsec_mode_t mode, u_int16_t ipcomp, u_int16_t cpi,
- bool routed)
-{
- unsigned char request[PFKEY_BUFFER_SIZE];
- struct sadb_msg *msg, *out;
- struct sadb_x_policy *pol;
- struct sadb_x_ipsecrequest *req;
- policy_entry_t *policy, *found = NULL;
- pfkey_msg_t response;
- size_t len;
-
- if (dir2kernel(direction) == IPSEC_DIR_INVALID)
- {
- /* FWD policies are not supported on all platforms */
- return SUCCESS;
- }
-
- /* create a policy */
- policy = create_policy_entry(src_ts, dst_ts, direction, reqid);
-
- /* find a matching policy */
- this->mutex->lock(this->mutex);
- if (this->policies->find_first(this->policies,
- (linked_list_match_t)policy_entry_equals, (void**)&found, policy) == SUCCESS)
- {
- /* use existing policy */
- found->refcount++;
- DBG2(DBG_KNL, "policy %R === %R %N already exists, increasing "
- "refcount", src_ts, dst_ts,
- policy_dir_names, direction);
- policy_entry_destroy(policy);
- policy = found;
- }
- else
- {
- /* apply the new one, if we have no such policy */
- this->policies->insert_last(this->policies, policy);
- policy->refcount = 1;
- }
-
- memset(&request, 0, sizeof(request));
-
- DBG2(DBG_KNL, "adding policy %R === %R %N", src_ts, dst_ts,
- policy_dir_names, direction);
-
- msg = (struct sadb_msg*)request;
- msg->sadb_msg_version = PF_KEY_V2;
- msg->sadb_msg_type = found ? SADB_X_SPDUPDATE : SADB_X_SPDADD;
- msg->sadb_msg_satype = 0;
- msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg));
-
- pol = (struct sadb_x_policy*)PFKEY_EXT_ADD_NEXT(msg);
- pol->sadb_x_policy_exttype = SADB_X_EXT_POLICY;
- pol->sadb_x_policy_len = PFKEY_LEN(sizeof(struct sadb_x_policy));
- pol->sadb_x_policy_id = 0;
- pol->sadb_x_policy_dir = dir2kernel(direction);
- pol->sadb_x_policy_type = IPSEC_POLICY_IPSEC;
-#ifdef HAVE_STRUCT_SADB_X_POLICY_SADB_X_POLICY_PRIORITY
- /* calculate priority based on source selector size, small size = high prio */
- pol->sadb_x_policy_priority = routed ? PRIO_LOW : PRIO_HIGH;
- pol->sadb_x_policy_priority -= policy->src.mask * 10;
- pol->sadb_x_policy_priority -= policy->src.proto != IPSEC_PROTO_ANY ? 2 : 0;
- pol->sadb_x_policy_priority -= policy->src.net->get_port(policy->src.net) ? 1 : 0;
-#endif
-
- /* one or more sadb_x_ipsecrequest extensions are added to the sadb_x_policy extension */
- req = (struct sadb_x_ipsecrequest*)(pol + 1);
- req->sadb_x_ipsecrequest_proto = proto_ike2ip(protocol);
- /* !!! the length of this struct MUST be in octets instead of 64 bit words */
- req->sadb_x_ipsecrequest_len = sizeof(struct sadb_x_ipsecrequest);
- req->sadb_x_ipsecrequest_mode = mode2kernel(mode);
- req->sadb_x_ipsecrequest_reqid = reqid;
- req->sadb_x_ipsecrequest_level = IPSEC_LEVEL_UNIQUE;
- if (mode == MODE_TUNNEL)
- {
- sockaddr_t *sa;
- socklen_t sl;
- sa = src->get_sockaddr(src);
- sl = *src->get_sockaddr_len(src);
- memcpy(req + 1, sa, sl);
- sa = dst->get_sockaddr(dst);
- memcpy((u_int8_t*)(req + 1) + sl, sa, sl);
- req->sadb_x_ipsecrequest_len += sl * 2;
- }
-
- pol->sadb_x_policy_len += PFKEY_LEN(req->sadb_x_ipsecrequest_len);
- PFKEY_EXT_ADD(msg, pol);
-
- add_addr_ext(msg, policy->src.net, SADB_EXT_ADDRESS_SRC, policy->src.proto,
- policy->src.mask);
- add_addr_ext(msg, policy->dst.net, SADB_EXT_ADDRESS_DST, policy->dst.proto,
- policy->dst.mask);
-
-#ifdef __FreeBSD__
- { /* on FreeBSD a lifetime has to be defined to be able to later query
- * the current use time. */
- struct sadb_lifetime *lft;
- lft = (struct sadb_lifetime*)PFKEY_EXT_ADD_NEXT(msg);
- lft->sadb_lifetime_exttype = SADB_EXT_LIFETIME_HARD;
- lft->sadb_lifetime_len = PFKEY_LEN(sizeof(struct sadb_lifetime));
- lft->sadb_lifetime_addtime = LONG_MAX;
- PFKEY_EXT_ADD(msg, lft);
- }
-#endif
-
- this->mutex->unlock(this->mutex);
-
- if (pfkey_send(this, msg, &out, &len) != SUCCESS)
- {
- DBG1(DBG_KNL, "unable to add policy %R === %R %N", src_ts, dst_ts,
- policy_dir_names, direction);
- return FAILED;
- }
- else if (out->sadb_msg_errno)
- {
- DBG1(DBG_KNL, "unable to add policy %R === %R %N: %s (%d)", src_ts, dst_ts,
- policy_dir_names, direction,
- strerror(out->sadb_msg_errno), out->sadb_msg_errno);
- free(out);
- return FAILED;
- }
- else if (parse_pfkey_message(out, &response) != SUCCESS)
- {
- DBG1(DBG_KNL, "unable to add policy %R === %R %N: parsing response "
- "from kernel failed", src_ts, dst_ts, policy_dir_names, direction);
- free(out);
- return FAILED;
- }
-
- this->mutex->lock(this->mutex);
-
- /* we try to find the policy again and update the kernel index */
- if (this->policies->find_last(this->policies, NULL, (void**)&policy) != SUCCESS)
- {
- DBG2(DBG_KNL, "unable to update index, the policy %R === %R %N is "
- "already gone, ignoring", src_ts, dst_ts, policy_dir_names, direction);
- this->mutex->unlock(this->mutex);
- free(out);
- return SUCCESS;
- }
- policy->index = response.x_policy->sadb_x_policy_id;
- free(out);
-
- /* install a route, if:
- * - we are NOT updating a policy
- * - this is a forward policy (to just get one for each child)
- * - we are in tunnel mode
- * - we are not using IPv6 (does not work correctly yet!)
- * - routing is not disabled via strongswan.conf
- */
- if (policy->route == NULL && direction == POLICY_FWD &&
- mode != MODE_TRANSPORT && src->get_family(src) != AF_INET6 &&
- this->install_routes)
- {
- route_entry_t *route = malloc_thing(route_entry_t);
-
- if (charon->kernel_interface->get_address_by_ts(charon->kernel_interface,
- dst_ts, &route->src_ip) == SUCCESS)
- {
- /* get the nexthop to src (src as we are in POLICY_FWD).*/
- route->gateway = charon->kernel_interface->get_nexthop(
- charon->kernel_interface, src);
- route->if_name = charon->kernel_interface->get_interface(
- charon->kernel_interface, dst);
- route->dst_net = chunk_clone(policy->src.net->get_address(policy->src.net));
- route->prefixlen = policy->src.mask;
-
- switch (charon->kernel_interface->add_route(charon->kernel_interface,
- route->dst_net, route->prefixlen, route->gateway,
- route->src_ip, route->if_name))
- {
- default:
- DBG1(DBG_KNL, "unable to install source route for %H",
- route->src_ip);
- /* FALL */
- case ALREADY_DONE:
- /* route exists, do not uninstall */
- route_entry_destroy(route);
- break;
- case SUCCESS:
- /* cache the installed route */
- policy->route = route;
- break;
- }
- }
- else
- {
- free(route);
- }
- }
-
- this->mutex->unlock(this->mutex);
-
- return SUCCESS;
-}
-
-/**
- * Implementation of kernel_interface_t.query_policy.
- */
-static status_t query_policy(private_kernel_pfkey_ipsec_t *this,
- traffic_selector_t *src_ts,
- traffic_selector_t *dst_ts,
- policy_dir_t direction, u_int32_t *use_time)
-{
- unsigned char request[PFKEY_BUFFER_SIZE];
- struct sadb_msg *msg, *out;
- struct sadb_x_policy *pol;
- policy_entry_t *policy, *found = NULL;
- pfkey_msg_t response;
- size_t len;
-
- if (dir2kernel(direction) == IPSEC_DIR_INVALID)
- {
- /* FWD policies are not supported on all platforms */
- return NOT_FOUND;
- }
-
- DBG2(DBG_KNL, "querying policy %R === %R %N", src_ts, dst_ts,
- policy_dir_names, direction);
-
- /* create a policy */
- policy = create_policy_entry(src_ts, dst_ts, direction, 0);
-
- /* find a matching policy */
- this->mutex->lock(this->mutex);
- if (this->policies->find_first(this->policies,
- (linked_list_match_t)policy_entry_equals, (void**)&found, policy) != SUCCESS)
- {
- DBG1(DBG_KNL, "querying policy %R === %R %N failed, not found", src_ts,
- dst_ts, policy_dir_names, direction);
- policy_entry_destroy(policy);
- this->mutex->unlock(this->mutex);
- return NOT_FOUND;
- }
- policy_entry_destroy(policy);
- policy = found;
-
- memset(&request, 0, sizeof(request));
-
- msg = (struct sadb_msg*)request;
- msg->sadb_msg_version = PF_KEY_V2;
- msg->sadb_msg_type = SADB_X_SPDGET;
- msg->sadb_msg_satype = 0;
- msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg));
-
- pol = (struct sadb_x_policy*)PFKEY_EXT_ADD_NEXT(msg);
- pol->sadb_x_policy_exttype = SADB_X_EXT_POLICY;
- pol->sadb_x_policy_id = policy->index;
- pol->sadb_x_policy_len = PFKEY_LEN(sizeof(struct sadb_x_policy));
- pol->sadb_x_policy_dir = dir2kernel(direction);
- pol->sadb_x_policy_type = IPSEC_POLICY_IPSEC;
- PFKEY_EXT_ADD(msg, pol);
-
- add_addr_ext(msg, policy->src.net, SADB_EXT_ADDRESS_SRC, policy->src.proto,
- policy->src.mask);
- add_addr_ext(msg, policy->dst.net, SADB_EXT_ADDRESS_DST, policy->dst.proto,
- policy->dst.mask);
-
- this->mutex->unlock(this->mutex);
-
- if (pfkey_send(this, msg, &out, &len) != SUCCESS)
- {
- DBG1(DBG_KNL, "unable to query policy %R === %R %N", src_ts, dst_ts,
- policy_dir_names, direction);
- return FAILED;
- }
- else if (out->sadb_msg_errno)
- {
- DBG1(DBG_KNL, "unable to query policy %R === %R %N: %s (%d)", src_ts,
- dst_ts, policy_dir_names, direction,
- strerror(out->sadb_msg_errno), out->sadb_msg_errno);
- free(out);
- return FAILED;
- }
- else if (parse_pfkey_message(out, &response) != SUCCESS)
- {
- DBG1(DBG_KNL, "unable to query policy %R === %R %N: parsing response "
- "from kernel failed", src_ts, dst_ts, policy_dir_names, direction);
- free(out);
- return FAILED;
- }
- else if (response.lft_current == NULL)
- {
- DBG1(DBG_KNL, "unable to query policy %R === %R %N: kernel reports no "
- "use time", src_ts, dst_ts, policy_dir_names, direction);
- free(out);
- return FAILED;
- }
- /* we need the monotonic time, but the kernel returns system time. */
- if (response.lft_current->sadb_lifetime_usetime)
- {
- *use_time = time_monotonic(NULL) -
- (time(NULL) - response.lft_current->sadb_lifetime_usetime);
- }
- else
- {
- *use_time = 0;
- }
- free(out);
-
- return SUCCESS;
-}
-
-/**
- * Implementation of kernel_interface_t.del_policy.
- */
-static status_t del_policy(private_kernel_pfkey_ipsec_t *this,
- traffic_selector_t *src_ts,
- traffic_selector_t *dst_ts,
- policy_dir_t direction, bool unrouted)
-{
- unsigned char request[PFKEY_BUFFER_SIZE];
- struct sadb_msg *msg, *out;
- struct sadb_x_policy *pol;
- policy_entry_t *policy, *found = NULL;
- route_entry_t *route;
- size_t len;
-
- if (dir2kernel(direction) == IPSEC_DIR_INVALID)
- {
- /* FWD policies are not supported on all platforms */
- return SUCCESS;
- }
-
- DBG2(DBG_KNL, "deleting policy %R === %R %N", src_ts, dst_ts,
- policy_dir_names, direction);
-
- /* create a policy */
- policy = create_policy_entry(src_ts, dst_ts, direction, 0);
-
- /* find a matching policy */
- this->mutex->lock(this->mutex);
- if (this->policies->find_first(this->policies,
- (linked_list_match_t)policy_entry_equals, (void**)&found, policy) == SUCCESS)
- {
- if (--found->refcount > 0)
- {
- /* is used by more SAs, keep in kernel */
- DBG2(DBG_KNL, "policy still used by another CHILD_SA, not removed");
- policy_entry_destroy(policy);
- this->mutex->unlock(this->mutex);
- return SUCCESS;
- }
- /* remove if last reference */
- this->policies->remove(this->policies, found, NULL);
- policy_entry_destroy(policy);
- policy = found;
- }
- else
- {
- DBG1(DBG_KNL, "deleting policy %R === %R %N failed, not found", src_ts,
- dst_ts, policy_dir_names, direction);
- policy_entry_destroy(policy);
- this->mutex->unlock(this->mutex);
- return NOT_FOUND;
- }
- this->mutex->unlock(this->mutex);
-
- memset(&request, 0, sizeof(request));
-
- msg = (struct sadb_msg*)request;
- msg->sadb_msg_version = PF_KEY_V2;
- msg->sadb_msg_type = SADB_X_SPDDELETE;
- msg->sadb_msg_satype = 0;
- msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg));
-
- pol = (struct sadb_x_policy*)PFKEY_EXT_ADD_NEXT(msg);
- pol->sadb_x_policy_exttype = SADB_X_EXT_POLICY;
- pol->sadb_x_policy_len = PFKEY_LEN(sizeof(struct sadb_x_policy));
- pol->sadb_x_policy_dir = dir2kernel(direction);
- pol->sadb_x_policy_type = IPSEC_POLICY_IPSEC;
- PFKEY_EXT_ADD(msg, pol);
-
- add_addr_ext(msg, policy->src.net, SADB_EXT_ADDRESS_SRC, policy->src.proto,
- policy->src.mask);
- add_addr_ext(msg, policy->dst.net, SADB_EXT_ADDRESS_DST, policy->dst.proto,
- policy->dst.mask);
-
- route = policy->route;
- policy->route = NULL;
- policy_entry_destroy(policy);
-
- if (pfkey_send(this, msg, &out, &len) != SUCCESS)
- {
- DBG1(DBG_KNL, "unable to delete policy %R === %R %N", src_ts, dst_ts,
- policy_dir_names, direction);
- return FAILED;
- }
- else if (out->sadb_msg_errno)
- {
- DBG1(DBG_KNL, "unable to delete policy %R === %R %N: %s (%d)", src_ts,
- dst_ts, policy_dir_names, direction,
- strerror(out->sadb_msg_errno), out->sadb_msg_errno);
- free(out);
- return FAILED;
- }
- free(out);
-
- if (route)
- {
- if (charon->kernel_interface->del_route(charon->kernel_interface,
- route->dst_net, route->prefixlen, route->gateway,
- route->src_ip, route->if_name) != SUCCESS)
- {
- DBG1(DBG_KNL, "error uninstalling route installed with "
- "policy %R === %R %N", src_ts, dst_ts,
- policy_dir_names, direction);
- }
- route_entry_destroy(route);
- }
-
- return SUCCESS;
-}
-
-/**
- * Register a socket for AQUIRE/EXPIRE messages
- */
-static status_t register_pfkey_socket(private_kernel_pfkey_ipsec_t *this, u_int8_t satype)
-{
- unsigned char request[PFKEY_BUFFER_SIZE];
- struct sadb_msg *msg, *out;
- size_t len;
-
- memset(&request, 0, sizeof(request));
-
- msg = (struct sadb_msg*)request;
- msg->sadb_msg_version = PF_KEY_V2;
- msg->sadb_msg_type = SADB_REGISTER;
- msg->sadb_msg_satype = satype;
- msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg));
-
- if (pfkey_send_socket(this, this->socket_events, msg, &out, &len) != SUCCESS)
- {
- DBG1(DBG_KNL, "unable to register PF_KEY socket");
- return FAILED;
- }
- else if (out->sadb_msg_errno)
- {
- DBG1(DBG_KNL, "unable to register PF_KEY socket: %s (%d)",
- strerror(out->sadb_msg_errno), out->sadb_msg_errno);
- free(out);
- return FAILED;
- }
- free(out);
- return SUCCESS;
-}
-
-/**
- * Implementation of kernel_interface_t.destroy.
- */
-static void destroy(private_kernel_pfkey_ipsec_t *this)
-{
- this->job->cancel(this->job);
- close(this->socket);
- close(this->socket_events);
- this->policies->destroy_function(this->policies, (void*)policy_entry_destroy);
- this->mutex->destroy(this->mutex);
- this->mutex_pfkey->destroy(this->mutex_pfkey);
- free(this);
-}
-
-/**
- * Add bypass policies for IKE on the sockets of charon
- */
-static bool add_bypass_policies(private_kernel_pfkey_ipsec_t *this)
-{
- int fd, family, port;
- enumerator_t *sockets;
- bool status = TRUE;
-
- sockets = charon->socket->create_enumerator(charon->socket);
- while (sockets->enumerate(sockets, &fd, &family, &port))
- {
- struct sadb_x_policy policy;
- u_int sol, ipsec_policy;
-
- switch (family)
- {
- case AF_INET:
- {
- sol = SOL_IP;
- ipsec_policy = IP_IPSEC_POLICY;
- break;
- }
- case AF_INET6:
- {
- sol = SOL_IPV6;
- ipsec_policy = IPV6_IPSEC_POLICY;
- break;
- }
- default:
- continue;
- }
-
- memset(&policy, 0, sizeof(policy));
- policy.sadb_x_policy_len = sizeof(policy) / sizeof(u_int64_t);
- policy.sadb_x_policy_exttype = SADB_X_EXT_POLICY;
- policy.sadb_x_policy_type = IPSEC_POLICY_BYPASS;
-
- policy.sadb_x_policy_dir = IPSEC_DIR_OUTBOUND;
- if (setsockopt(fd, sol, ipsec_policy, &policy, sizeof(policy)) < 0)
- {
- DBG1(DBG_KNL, "unable to set IPSEC_POLICY on socket: %s",
- strerror(errno));
- status = FALSE;
- break;
- }
- policy.sadb_x_policy_dir = IPSEC_DIR_INBOUND;
- if (setsockopt(fd, sol, ipsec_policy, &policy, sizeof(policy)) < 0)
- {
- DBG1(DBG_KNL, "unable to set IPSEC_POLICY on socket: %s",
- strerror(errno));
- status = FALSE;
- break;
- }
- }
- sockets->destroy(sockets);
- return status;
-}
-
-/*
- * Described in header.
- */
-kernel_pfkey_ipsec_t *kernel_pfkey_ipsec_create()
-{
- private_kernel_pfkey_ipsec_t *this = malloc_thing(private_kernel_pfkey_ipsec_t);
-
- /* public functions */
- this->public.interface.get_spi = (status_t(*)(kernel_ipsec_t*,host_t*,host_t*,protocol_id_t,u_int32_t,u_int32_t*))get_spi;
- this->public.interface.get_cpi = (status_t(*)(kernel_ipsec_t*,host_t*,host_t*,u_int32_t,u_int16_t*))get_cpi;
- this->public.interface.add_sa = (status_t(*)(kernel_ipsec_t *,host_t*,host_t*,u_int32_t,protocol_id_t,u_int32_t,lifetime_cfg_t*,u_int16_t,chunk_t,u_int16_t,chunk_t,ipsec_mode_t,u_int16_t,u_int16_t,bool,bool,traffic_selector_t*,traffic_selector_t*))add_sa;
- this->public.interface.update_sa = (status_t(*)(kernel_ipsec_t*,u_int32_t,protocol_id_t,u_int16_t,host_t*,host_t*,host_t*,host_t*,bool,bool))update_sa;
- this->public.interface.query_sa = (status_t(*)(kernel_ipsec_t*,host_t*,host_t*,u_int32_t,protocol_id_t,u_int64_t*))query_sa;
- this->public.interface.del_sa = (status_t(*)(kernel_ipsec_t*,host_t*,host_t*,u_int32_t,protocol_id_t,u_int16_t))del_sa;
- this->public.interface.add_policy = (status_t(*)(kernel_ipsec_t*,host_t*,host_t*,traffic_selector_t*,traffic_selector_t*,policy_dir_t,u_int32_t,protocol_id_t,u_int32_t,ipsec_mode_t,u_int16_t,u_int16_t,bool))add_policy;
- this->public.interface.query_policy = (status_t(*)(kernel_ipsec_t*,traffic_selector_t*,traffic_selector_t*,policy_dir_t,u_int32_t*))query_policy;
- this->public.interface.del_policy = (status_t(*)(kernel_ipsec_t*,traffic_selector_t*,traffic_selector_t*,policy_dir_t,bool))del_policy;
-
- this->public.interface.destroy = (void(*)(kernel_ipsec_t*)) destroy;
-
- /* private members */
- this->policies = linked_list_create();
- this->mutex = mutex_create(MUTEX_TYPE_DEFAULT);
- this->mutex_pfkey = mutex_create(MUTEX_TYPE_DEFAULT);
- this->install_routes = lib->settings->get_bool(lib->settings,
- "charon.install_routes", TRUE);
- this->seq = 0;
-
- /* create a PF_KEY socket to communicate with the kernel */
- this->socket = socket(PF_KEY, SOCK_RAW, PF_KEY_V2);
- if (this->socket <= 0)
- {
- charon->kill(charon, "unable to create PF_KEY socket");
- }
-
- /* create a PF_KEY socket for ACQUIRE & EXPIRE */
- this->socket_events = socket(PF_KEY, SOCK_RAW, PF_KEY_V2);
- if (this->socket_events <= 0)
- {
- charon->kill(charon, "unable to create PF_KEY event socket");
- }
-
- /* add bypass policies on the sockets used by charon */
- if (!add_bypass_policies(this))
- {
- charon->kill(charon, "unable to add bypass policies on sockets");
- }
-
- /* register the event socket */
- if (register_pfkey_socket(this, SADB_SATYPE_ESP) != SUCCESS ||
- register_pfkey_socket(this, SADB_SATYPE_AH) != SUCCESS)
- {
- charon->kill(charon, "unable to register PF_KEY event socket");
- }
-
- this->job = callback_job_create((callback_job_cb_t)receive_events,
- this, NULL, NULL);
- charon->processor->queue_job(charon->processor, (job_t*)this->job);
-
- return &this->public;
-}
diff --git a/src/charon/plugins/kernel_pfkey/kernel_pfkey_ipsec.h b/src/charon/plugins/kernel_pfkey/kernel_pfkey_ipsec.h
deleted file mode 100644
index 649f93733..000000000
--- a/src/charon/plugins/kernel_pfkey/kernel_pfkey_ipsec.h
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- * Copyright (C) 2008 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 kernel_pfkey_ipsec_i kernel_pfkey_ipsec
- * @{ @ingroup kernel_pfkey
- */
-
-#ifndef KERNEL_PFKEY_IPSEC_H_
-#define KERNEL_PFKEY_IPSEC_H_
-
-#include <kernel/kernel_ipsec.h>
-
-typedef struct kernel_pfkey_ipsec_t kernel_pfkey_ipsec_t;
-
-/**
- * Implementation of the kernel ipsec interface using PF_KEY.
- */
-struct kernel_pfkey_ipsec_t {
-
- /**
- * Implements kernel_ipsec_t interface
- */
- kernel_ipsec_t interface;
-};
-
-/**
- * Create a PF_KEY kernel ipsec interface instance.
- *
- * @return kernel_pfkey_ipsec_t instance
- */
-kernel_pfkey_ipsec_t *kernel_pfkey_ipsec_create();
-
-#endif /** KERNEL_PFKEY_IPSEC_H_ @}*/
diff --git a/src/charon/plugins/kernel_pfkey/kernel_pfkey_plugin.c b/src/charon/plugins/kernel_pfkey/kernel_pfkey_plugin.c
deleted file mode 100644
index 3380c328c..000000000
--- a/src/charon/plugins/kernel_pfkey/kernel_pfkey_plugin.c
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
- * Copyright (C) 2008 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 "kernel_pfkey_plugin.h"
-
-#include "kernel_pfkey_ipsec.h"
-
-#include <daemon.h>
-
-typedef struct private_kernel_pfkey_plugin_t private_kernel_pfkey_plugin_t;
-
-/**
- * private data of kernel PF_KEY plugin
- */
-struct private_kernel_pfkey_plugin_t {
- /**
- * implements plugin interface
- */
- kernel_pfkey_plugin_t public;
-};
-
-/**
- * Implementation of plugin_t.destroy
- */
-static void destroy(private_kernel_pfkey_plugin_t *this)
-{
- charon->kernel_interface->remove_ipsec_interface(charon->kernel_interface, (kernel_ipsec_constructor_t)kernel_pfkey_ipsec_create);
- free(this);
-}
-
-/*
- * see header file
- */
-plugin_t *plugin_create()
-{
- private_kernel_pfkey_plugin_t *this = malloc_thing(private_kernel_pfkey_plugin_t);
-
- this->public.plugin.destroy = (void(*)(plugin_t*))destroy;
-
- charon->kernel_interface->add_ipsec_interface(charon->kernel_interface, (kernel_ipsec_constructor_t)kernel_pfkey_ipsec_create);
-
- return &this->public.plugin;
-}
diff --git a/src/charon/plugins/kernel_pfkey/kernel_pfkey_plugin.h b/src/charon/plugins/kernel_pfkey/kernel_pfkey_plugin.h
deleted file mode 100644
index 2f168aa9c..000000000
--- a/src/charon/plugins/kernel_pfkey/kernel_pfkey_plugin.h
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- * Copyright (C) 2008 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 kernel_pfkey kernel_pfkey
- * @ingroup cplugins
- *
- * @defgroup kernel_pfkey_plugin kernel_pfkey_plugin
- * @{ @ingroup kernel_pfkey
- */
-
-#ifndef KERNEL_PFKEY_PLUGIN_H_
-#define KERNEL_PFKEY_PLUGIN_H_
-
-#include <plugins/plugin.h>
-
-typedef struct kernel_pfkey_plugin_t kernel_pfkey_plugin_t;
-
-/**
- * PF_KEY kernel interface plugin
- */
-struct kernel_pfkey_plugin_t {
-
- /**
- * implements plugin interface
- */
- plugin_t plugin;
-};
-
-/**
- * Create a kernel_pfkey_plugin instance.
- */
-plugin_t *plugin_create();
-
-#endif /** KERNEL_PFKEY_PLUGIN_H_ @}*/
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-13 21:48:12 +0000