diff options
Diffstat (limited to 'src/plugins/ikev2')
| -rw-r--r-- | src/plugins/ikev2/CMakeLists.txt | 34 | ||||
| -rw-r--r-- | src/plugins/ikev2/ikev2.api | 293 | ||||
| -rw-r--r-- | src/plugins/ikev2/ikev2.c | 3487 | ||||
| -rw-r--r-- | src/plugins/ikev2/ikev2.h | 435 | ||||
| -rw-r--r-- | src/plugins/ikev2/ikev2_api.c | 468 | ||||
| -rw-r--r-- | src/plugins/ikev2/ikev2_cli.c | 602 | ||||
| -rw-r--r-- | src/plugins/ikev2/ikev2_crypto.c | 1076 | ||||
| -rw-r--r-- | src/plugins/ikev2/ikev2_format.c | 155 | ||||
| -rw-r--r-- | src/plugins/ikev2/ikev2_msg_enum.h | 28 | ||||
| -rw-r--r-- | src/plugins/ikev2/ikev2_payload.c | 549 | ||||
| -rw-r--r-- | src/plugins/ikev2/ikev2_priv.h | 364 | ||||
| -rw-r--r-- | src/plugins/ikev2/ikev2_test.c | 861 |
12 files changed, 8352 insertions, 0 deletions
diff --git a/src/plugins/ikev2/CMakeLists.txt b/src/plugins/ikev2/CMakeLists.txt new file mode 100644 index 00000000000..800b9a8d67e --- /dev/null +++ b/src/plugins/ikev2/CMakeLists.txt @@ -0,0 +1,34 @@ +# Copyright (c) 2018 Cisco and/or its affiliates. +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at: +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +add_vpp_plugin(ikev2 + SOURCES + ikev2.c + ikev2_api.c + ikev2_cli.c + ikev2_crypto.c + ikev2_format.c + ikev2_payload.c + + API_FILES + ikev2.api + + API_TEST_SOURCES + ikev2_test.c + + INSTALL_HEADERS + ikev2.h + ikev2_priv.h + + COMPONENT vpp-plugin-ikev2 +) diff --git a/src/plugins/ikev2/ikev2.api b/src/plugins/ikev2/ikev2.api new file mode 100644 index 00000000000..6c47482ae12 --- /dev/null +++ b/src/plugins/ikev2/ikev2.api @@ -0,0 +1,293 @@ +/* Hey Emacs use -*- mode: C -*- */ +/* + * Copyright (c) 2015-2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +option version = "1.0.0"; + +/** \brief Get the plugin version + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request +*/ +define ikev2_plugin_get_version +{ + u32 client_index; + u32 context; +}; + +/** \brief Reply to get the plugin version + @param context - returned sender context, to match reply w/ request + @param major - Incremented every time a known breaking behavior change is introduced + @param minor - Incremented with small changes, may be used to avoid buggy versions +*/ +define ikev2_plugin_get_version_reply +{ + u32 context; + u32 major; + u32 minor; +}; + +/** \brief IKEv2: Add/delete profile + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + + @param name - IKEv2 profile name + @param is_add - Add IKEv2 profile if non-zero, else delete +*/ +autoreply define ikev2_profile_add_del +{ + u32 client_index; + u32 context; + + u8 name[64]; + u8 is_add; +}; + +/** \brief IKEv2: Set IKEv2 profile authentication method + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + + @param name - IKEv2 profile name + @param auth_method - IKEv2 authentication method (shared-key-mic/rsa-sig) + @param is_hex - Authentication data in hex format if non-zero, else string + @param data_len - Authentication data length + @param data - Authentication data (for rsa-sig cert file path) +*/ +autoreply define ikev2_profile_set_auth +{ + u32 client_index; + u32 context; + + u8 name[64]; + u8 auth_method; + u8 is_hex; + u32 data_len; + u8 data[data_len]; +}; + +/** \brief IKEv2: Set IKEv2 profile local/remote identification + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + + @param name - IKEv2 profile name + @param is_local - Identification is local if non-zero, else remote + @param id_type - Identification type + @param data_len - Identification data length + @param data - Identification data +*/ +autoreply define ikev2_profile_set_id +{ + u32 client_index; + u32 context; + + u8 name[64]; + u8 is_local; + u8 id_type; + u32 data_len; + u8 data[data_len]; +}; + +/** \brief IKEv2: Set IKEv2 profile traffic selector parameters + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + + @param name - IKEv2 profile name + @param is_local - Traffic selector is local if non-zero, else remote + @param proto - Traffic selector IP protocol (if zero not relevant) + @param start_port - The smallest port number allowed by traffic selector + @param end_port - The largest port number allowed by traffic selector + @param start_addr - The smallest address included in traffic selector + @param end_addr - The largest address included in traffic selector +*/ +autoreply define ikev2_profile_set_ts +{ + u32 client_index; + u32 context; + + u8 name[64]; + u8 is_local; + u8 proto; + u16 start_port; + u16 end_port; + u32 start_addr; + u32 end_addr; +}; + +/** \brief IKEv2: Set IKEv2 local RSA private key + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + + @param key_file - Key file absolute path +*/ +autoreply define ikev2_set_local_key +{ + u32 client_index; + u32 context; + + u8 key_file[256]; +}; + +/** \brief IKEv2: Set IKEv2 responder interface and IP address + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + + @param name - IKEv2 profile name + @param sw_if_index - interface index + @param address - interface address +*/ +autoreply define ikev2_set_responder +{ + u32 client_index; + u32 context; + + u8 name[64]; + u32 sw_if_index; + u8 address[4]; +}; + +/** \brief IKEv2: Set IKEv2 IKE transforms in SA_INIT proposal (RFC 7296) + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + + @param name - IKEv2 profile name + @param crypto_alg - encryption algorithm + @param crypto_key_size - encryption key size + @param integ_alg - integrity algorithm + @param dh_group - Diffie-Hellman group + +*/ +autoreply define ikev2_set_ike_transforms +{ + u32 client_index; + u32 context; + + u8 name[64]; + u32 crypto_alg; + u32 crypto_key_size; + u32 integ_alg; + u32 dh_group; +}; + +/** \brief IKEv2: Set IKEv2 ESP transforms in SA_INIT proposal (RFC 7296) + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + + @param name - IKEv2 profile name + @param crypto_alg - encryption algorithm + @param crypto_key_size - encryption key size + @param integ_alg - integrity algorithm + @param dh_group - Diffie-Hellman group + +*/ +autoreply define ikev2_set_esp_transforms +{ + u32 client_index; + u32 context; + + u8 name[64]; + u32 crypto_alg; + u32 crypto_key_size; + u32 integ_alg; + u32 dh_group; +}; + +/** \brief IKEv2: Set Child SA lifetime, limited by time and/or data + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + + @param name - IKEv2 profile name + @param lifetime - SA maximum life time in seconds (0 to disable) + @param lifetime_jitter - Jitter added to prevent simultaneous rekeying + @param handover - Hand over time + @param lifetime_maxdata - SA maximum life time in bytes (0 to disable) + +*/ +autoreply define ikev2_set_sa_lifetime +{ + u32 client_index; + u32 context; + + u8 name[64]; + u64 lifetime; + u32 lifetime_jitter; + u32 handover; + u64 lifetime_maxdata; +}; + +/** \brief IKEv2: Initiate the SA_INIT exchange + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + + @param name - IKEv2 profile name + +*/ +autoreply define ikev2_initiate_sa_init +{ + u32 client_index; + u32 context; + + u8 name[64]; +}; + +/** \brief IKEv2: Initiate the delete IKE SA exchange + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + + @param ispi - IKE SA initiator SPI + +*/ +autoreply define ikev2_initiate_del_ike_sa +{ + u32 client_index; + u32 context; + + u64 ispi; +}; + +/** \brief IKEv2: Initiate the delete Child SA exchange + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + + @param ispi - Child SA initiator SPI + +*/ +autoreply define ikev2_initiate_del_child_sa +{ + u32 client_index; + u32 context; + + u32 ispi; +}; + +/** \brief IKEv2: Initiate the rekey Child SA exchange + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + + @param ispi - Child SA initiator SPI + +*/ +autoreply define ikev2_initiate_rekey_child_sa +{ + u32 client_index; + u32 context; + + u32 ispi; +}; + +/* + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ + diff --git a/src/plugins/ikev2/ikev2.c b/src/plugins/ikev2/ikev2.c new file mode 100644 index 00000000000..929f97716d3 --- /dev/null +++ b/src/plugins/ikev2/ikev2.c @@ -0,0 +1,3487 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <vlib/vlib.h> +#include <vlib/unix/plugin.h> +#include <vpp/app/version.h> +#include <vnet/vnet.h> +#include <vnet/pg/pg.h> +#include <vppinfra/error.h> +#include <vppinfra/random.h> +#include <vnet/udp/udp.h> +#include <vnet/ipsec/ipsec.h> +#include <plugins/ikev2/ikev2.h> +#include <plugins/ikev2/ikev2_priv.h> +#include <openssl/sha.h> + +ikev2_main_t ikev2_main; + +static int ikev2_delete_tunnel_interface (vnet_main_t * vnm, + ikev2_sa_t * sa, + ikev2_child_sa_t * child); + +#define ikev2_set_state(sa, v) do { \ + (sa)->state = v; \ + clib_warning("sa state changed to " #v); \ + } while(0); + +typedef struct +{ + u32 next_index; + u32 sw_if_index; +} ikev2_trace_t; + +static u8 * +format_ikev2_trace (u8 * s, va_list * args) +{ + CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); + CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); + ikev2_trace_t *t = va_arg (*args, ikev2_trace_t *); + + s = format (s, "ikev2: sw_if_index %d, next index %d", + t->sw_if_index, t->next_index); + return s; +} + +static vlib_node_registration_t ikev2_node; + +#define foreach_ikev2_error \ +_(PROCESSED, "IKEv2 packets processed") \ +_(IKE_SA_INIT_RETRANSMIT, "IKE_SA_INIT retransmit ") \ +_(IKE_SA_INIT_IGNORE, "IKE_SA_INIT ignore (IKE SA already auth)") \ +_(IKE_REQ_RETRANSMIT, "IKE request retransmit") \ +_(IKE_REQ_IGNORE, "IKE request ignore (old msgid)") \ +_(NOT_IKEV2, "Non IKEv2 packets received") + +typedef enum +{ +#define _(sym,str) IKEV2_ERROR_##sym, + foreach_ikev2_error +#undef _ + IKEV2_N_ERROR, +} ikev2_error_t; + +static char *ikev2_error_strings[] = { +#define _(sym,string) string, + foreach_ikev2_error +#undef _ +}; + +typedef enum +{ + IKEV2_NEXT_IP4_LOOKUP, + IKEV2_NEXT_ERROR_DROP, + IKEV2_N_NEXT, +} ikev2_next_t; + +static ikev2_sa_transform_t * +ikev2_find_transform_data (ikev2_sa_transform_t * t) +{ + ikev2_main_t *km = &ikev2_main; + ikev2_sa_transform_t *td; + + vec_foreach (td, km->supported_transforms) + { + if (td->type != t->type) + continue; + + if (td->transform_id != t->transform_id) + continue; + + if (td->type == IKEV2_TRANSFORM_TYPE_ENCR) + { + if (vec_len (t->attrs) != 4 || t->attrs[0] != 0x80 + || t->attrs[1] != 14) + continue; + + if (((t->attrs[2] << 8 | t->attrs[3]) / 8) != td->key_len) + continue; + } + return td; + } + return 0; +} + +static ikev2_sa_proposal_t * +ikev2_select_proposal (ikev2_sa_proposal_t * proposals, + ikev2_protocol_id_t prot_id) +{ + ikev2_sa_proposal_t *rv = 0; + ikev2_sa_proposal_t *proposal; + ikev2_sa_transform_t *transform, *new_t; + u8 mandatory_bitmap, optional_bitmap; + + if (prot_id == IKEV2_PROTOCOL_IKE) + { + mandatory_bitmap = (1 << IKEV2_TRANSFORM_TYPE_ENCR) | + (1 << IKEV2_TRANSFORM_TYPE_PRF) | + (1 << IKEV2_TRANSFORM_TYPE_INTEG) | (1 << IKEV2_TRANSFORM_TYPE_DH); + optional_bitmap = mandatory_bitmap; + } + else if (prot_id == IKEV2_PROTOCOL_ESP) + { + mandatory_bitmap = (1 << IKEV2_TRANSFORM_TYPE_ENCR) | + (1 << IKEV2_TRANSFORM_TYPE_ESN); + optional_bitmap = mandatory_bitmap | + (1 << IKEV2_TRANSFORM_TYPE_INTEG) | (1 << IKEV2_TRANSFORM_TYPE_DH); + } + else if (prot_id == IKEV2_PROTOCOL_AH) + { + mandatory_bitmap = (1 << IKEV2_TRANSFORM_TYPE_INTEG) | + (1 << IKEV2_TRANSFORM_TYPE_ESN); + optional_bitmap = mandatory_bitmap | (1 << IKEV2_TRANSFORM_TYPE_DH); + } + else + return 0; + + vec_add2 (rv, proposal, 1); + + vec_foreach (proposal, proposals) + { + u8 bitmap = 0; + if (proposal->protocol_id != prot_id) + continue; + + vec_foreach (transform, proposal->transforms) + { + if ((1 << transform->type) & bitmap) + continue; + + if (ikev2_find_transform_data (transform)) + { + bitmap |= 1 << transform->type; + vec_add2 (rv->transforms, new_t, 1); + clib_memcpy_fast (new_t, transform, sizeof (*new_t)); + new_t->attrs = vec_dup (transform->attrs); + } + } + + clib_warning ("bitmap is %x mandatory is %x optional is %x", + bitmap, mandatory_bitmap, optional_bitmap); + + if ((bitmap & mandatory_bitmap) == mandatory_bitmap && + (bitmap & ~optional_bitmap) == 0) + { + rv->proposal_num = proposal->proposal_num; + rv->protocol_id = proposal->protocol_id; + RAND_bytes ((u8 *) & rv->spi, sizeof (rv->spi)); + goto done; + } + else + { + vec_free (rv->transforms); + } + } + + vec_free (rv); +done: + return rv; +} + +ikev2_sa_transform_t * +ikev2_sa_get_td_for_type (ikev2_sa_proposal_t * p, + ikev2_transform_type_t type) +{ + ikev2_sa_transform_t *t; + + if (!p) + return 0; + + vec_foreach (t, p->transforms) + { + if (t->type == type) + return ikev2_find_transform_data (t); + } + return 0; +} + +ikev2_child_sa_t * +ikev2_sa_get_child (ikev2_sa_t * sa, u32 spi, ikev2_protocol_id_t prot_id, + int by_initiator) +{ + ikev2_child_sa_t *c; + vec_foreach (c, sa->childs) + { + ikev2_sa_proposal_t *proposal = + by_initiator ? &c->i_proposals[0] : &c->r_proposals[0]; + if (proposal && proposal->spi == spi && proposal->protocol_id == prot_id) + return c; + } + + return 0; +} + +void +ikev2_sa_free_proposal_vector (ikev2_sa_proposal_t ** v) +{ + ikev2_sa_proposal_t *p; + ikev2_sa_transform_t *t; + + if (!*v) + return; + + vec_foreach (p, *v) + { + vec_foreach (t, p->transforms) + { + vec_free (t->attrs); + } + vec_free (p->transforms); + } + vec_free (*v); +}; + +static void +ikev2_sa_free_all_child_sa (ikev2_child_sa_t ** childs) +{ + ikev2_child_sa_t *c; + vec_foreach (c, *childs) + { + ikev2_sa_free_proposal_vector (&c->r_proposals); + ikev2_sa_free_proposal_vector (&c->i_proposals); + vec_free (c->sk_ai); + vec_free (c->sk_ar); + vec_free (c->sk_ei); + vec_free (c->sk_er); + } + + vec_free (*childs); +} + +static void +ikev2_sa_del_child_sa (ikev2_sa_t * sa, ikev2_child_sa_t * child) +{ + ikev2_sa_free_proposal_vector (&child->r_proposals); + ikev2_sa_free_proposal_vector (&child->i_proposals); + vec_free (child->sk_ai); + vec_free (child->sk_ar); + vec_free (child->sk_ei); + vec_free (child->sk_er); + + vec_del1 (sa->childs, child - sa->childs); +} + +static void +ikev2_sa_free_all_vec (ikev2_sa_t * sa) +{ + vec_free (sa->i_nonce); + vec_free (sa->i_dh_data); + vec_free (sa->dh_shared_key); + vec_free (sa->dh_private_key); + + ikev2_sa_free_proposal_vector (&sa->r_proposals); + ikev2_sa_free_proposal_vector (&sa->i_proposals); + + vec_free (sa->sk_d); + vec_free (sa->sk_ai); + vec_free (sa->sk_ar); + vec_free (sa->sk_ei); + vec_free (sa->sk_er); + vec_free (sa->sk_pi); + vec_free (sa->sk_pr); + + vec_free (sa->i_id.data); + vec_free (sa->i_auth.data); + vec_free (sa->r_id.data); + vec_free (sa->r_auth.data); + if (sa->r_auth.key) + EVP_PKEY_free (sa->r_auth.key); + + vec_free (sa->del); + + ikev2_sa_free_all_child_sa (&sa->childs); +} + +static void +ikev2_delete_sa (ikev2_sa_t * sa) +{ + ikev2_main_t *km = &ikev2_main; + u32 thread_index = vlib_get_thread_index (); + uword *p; + + ikev2_sa_free_all_vec (sa); + + p = hash_get (km->per_thread_data[thread_index].sa_by_rspi, sa->rspi); + if (p) + { + hash_unset (km->per_thread_data[thread_index].sa_by_rspi, sa->rspi); + pool_put (km->per_thread_data[thread_index].sas, sa); + } +} + +static void +ikev2_generate_sa_init_data (ikev2_sa_t * sa) +{ + ikev2_sa_transform_t *t = 0, *t2; + ikev2_main_t *km = &ikev2_main; + + if (sa->dh_group == IKEV2_TRANSFORM_DH_TYPE_NONE) + { + return; + } + + /* check if received DH group is on our list of supported groups */ + vec_foreach (t2, km->supported_transforms) + { + if (t2->type == IKEV2_TRANSFORM_TYPE_DH && sa->dh_group == t2->dh_type) + { + t = t2; + break; + } + } + + if (!t) + { + clib_warning ("unknown dh data group %u (data len %u)", sa->dh_group, + vec_len (sa->i_dh_data)); + sa->dh_group = IKEV2_TRANSFORM_DH_TYPE_NONE; + return; + } + + if (sa->is_initiator) + { + /* generate rspi */ + RAND_bytes ((u8 *) & sa->ispi, 8); + + /* generate nonce */ + sa->i_nonce = vec_new (u8, IKEV2_NONCE_SIZE); + RAND_bytes ((u8 *) sa->i_nonce, IKEV2_NONCE_SIZE); + } + else + { + /* generate rspi */ + RAND_bytes ((u8 *) & sa->rspi, 8); + + /* generate nonce */ + sa->r_nonce = vec_new (u8, IKEV2_NONCE_SIZE); + RAND_bytes ((u8 *) sa->r_nonce, IKEV2_NONCE_SIZE); + } + + /* generate dh keys */ + ikev2_generate_dh (sa, t); + +} + +static void +ikev2_complete_sa_data (ikev2_sa_t * sa, ikev2_sa_t * sai) +{ + ikev2_sa_transform_t *t = 0, *t2; + ikev2_main_t *km = &ikev2_main; + + + /*move some data to the new SA */ +#define _(A) ({void* __tmp__ = (A); (A) = 0; __tmp__;}) + sa->i_nonce = _(sai->i_nonce); + sa->i_dh_data = _(sai->i_dh_data); + sa->dh_private_key = _(sai->dh_private_key); + sa->iaddr.as_u32 = sai->iaddr.as_u32; + sa->raddr.as_u32 = sai->raddr.as_u32; + sa->is_initiator = sai->is_initiator; + sa->profile = sai->profile; + sa->i_id.type = sai->i_id.type; + sa->i_id.data = _(sai->i_id.data); + sa->i_auth.method = sai->i_auth.method; + sa->i_auth.hex = sai->i_auth.hex; + sa->i_auth.data = _(sai->i_auth.data); + sa->i_auth.key = _(sai->i_auth.key); + sa->last_sa_init_req_packet_data = _(sai->last_sa_init_req_packet_data); + sa->childs = _(sai->childs); +#undef _ + + + if (sa->dh_group == IKEV2_TRANSFORM_DH_TYPE_NONE) + { + return; + } + + /* check if received DH group is on our list of supported groups */ + vec_foreach (t2, km->supported_transforms) + { + if (t2->type == IKEV2_TRANSFORM_TYPE_DH && sa->dh_group == t2->dh_type) + { + t = t2; + break; + } + } + + if (!t) + { + clib_warning ("unknown dh data group %u (data len %u)", sa->dh_group, + vec_len (sa->i_dh_data)); + sa->dh_group = IKEV2_TRANSFORM_DH_TYPE_NONE; + return; + } + + + /* generate dh keys */ + ikev2_complete_dh (sa, t); + +} + +static void +ikev2_calc_keys (ikev2_sa_t * sa) +{ + u8 *tmp; + /* calculate SKEYSEED = prf(Ni | Nr, g^ir) */ + u8 *skeyseed = 0; + u8 *s = 0; + ikev2_sa_transform_t *tr_encr, *tr_prf, *tr_integ; + tr_encr = + ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_ENCR); + tr_prf = + ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_PRF); + tr_integ = + ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_INTEG); + + vec_append (s, sa->i_nonce); + vec_append (s, sa->r_nonce); + skeyseed = ikev2_calc_prf (tr_prf, s, sa->dh_shared_key); + + /* Calculate S = Ni | Nr | SPIi | SPIr */ + u64 *spi; + vec_add2 (s, tmp, 2 * sizeof (*spi)); + spi = (u64 *) tmp; + spi[0] = clib_host_to_net_u64 (sa->ispi); + spi[1] = clib_host_to_net_u64 (sa->rspi); + + /* calculate PRFplus */ + u8 *keymat; + int len = tr_prf->key_trunc + /* SK_d */ + tr_integ->key_len * 2 + /* SK_ai, SK_ar */ + tr_encr->key_len * 2 + /* SK_ei, SK_er */ + tr_prf->key_len * 2; /* SK_pi, SK_pr */ + + keymat = ikev2_calc_prfplus (tr_prf, skeyseed, s, len); + vec_free (skeyseed); + vec_free (s); + + int pos = 0; + + /* SK_d */ + sa->sk_d = vec_new (u8, tr_prf->key_trunc); + clib_memcpy_fast (sa->sk_d, keymat + pos, tr_prf->key_trunc); + pos += tr_prf->key_trunc; + + /* SK_ai */ + sa->sk_ai = vec_new (u8, tr_integ->key_len); + clib_memcpy_fast (sa->sk_ai, keymat + pos, tr_integ->key_len); + pos += tr_integ->key_len; + + /* SK_ar */ + sa->sk_ar = vec_new (u8, tr_integ->key_len); + clib_memcpy_fast (sa->sk_ar, keymat + pos, tr_integ->key_len); + pos += tr_integ->key_len; + + /* SK_ei */ + sa->sk_ei = vec_new (u8, tr_encr->key_len); + clib_memcpy_fast (sa->sk_ei, keymat + pos, tr_encr->key_len); + pos += tr_encr->key_len; + + /* SK_er */ + sa->sk_er = vec_new (u8, tr_encr->key_len); + clib_memcpy_fast (sa->sk_er, keymat + pos, tr_encr->key_len); + pos += tr_encr->key_len; + + /* SK_pi */ + sa->sk_pi = vec_new (u8, tr_prf->key_len); + clib_memcpy_fast (sa->sk_pi, keymat + pos, tr_prf->key_len); + pos += tr_prf->key_len; + + /* SK_pr */ + sa->sk_pr = vec_new (u8, tr_prf->key_len); + clib_memcpy_fast (sa->sk_pr, keymat + pos, tr_prf->key_len); + pos += tr_prf->key_len; + + vec_free (keymat); +} + +static void +ikev2_calc_child_keys (ikev2_sa_t * sa, ikev2_child_sa_t * child) +{ + u8 *s = 0; + ikev2_sa_transform_t *tr_prf, *ctr_encr, *ctr_integ; + tr_prf = + ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_PRF); + ctr_encr = + ikev2_sa_get_td_for_type (child->r_proposals, IKEV2_TRANSFORM_TYPE_ENCR); + ctr_integ = + ikev2_sa_get_td_for_type (child->r_proposals, IKEV2_TRANSFORM_TYPE_INTEG); + + vec_append (s, sa->i_nonce); + vec_append (s, sa->r_nonce); + /* calculate PRFplus */ + u8 *keymat; + int len = ctr_encr->key_len * 2 + ctr_integ->key_len * 2; + + keymat = ikev2_calc_prfplus (tr_prf, sa->sk_d, s, len); + + int pos = 0; + + /* SK_ei */ + child->sk_ei = vec_new (u8, ctr_encr->key_len); + clib_memcpy_fast (child->sk_ei, keymat + pos, ctr_encr->key_len); + pos += ctr_encr->key_len; + + /* SK_ai */ + child->sk_ai = vec_new (u8, ctr_integ->key_len); + clib_memcpy_fast (child->sk_ai, keymat + pos, ctr_integ->key_len); + pos += ctr_integ->key_len; + + /* SK_er */ + child->sk_er = vec_new (u8, ctr_encr->key_len); + clib_memcpy_fast (child->sk_er, keymat + pos, ctr_encr->key_len); + pos += ctr_encr->key_len; + + /* SK_ar */ + child->sk_ar = vec_new (u8, ctr_integ->key_len); + clib_memcpy_fast (child->sk_ar, keymat + pos, ctr_integ->key_len); + pos += ctr_integ->key_len; + + ASSERT (pos == len); + + vec_free (keymat); +} + +static void +ikev2_process_sa_init_req (vlib_main_t * vm, ikev2_sa_t * sa, + ike_header_t * ike) +{ + int p = 0; + u32 len = clib_net_to_host_u32 (ike->length); + u8 payload = ike->nextpayload; + + clib_warning ("ispi %lx rspi %lx nextpayload %x version %x " + "exchange %x flags %x msgid %x length %u", + clib_net_to_host_u64 (ike->ispi), + clib_net_to_host_u64 (ike->rspi), + payload, ike->version, + ike->exchange, ike->flags, + clib_net_to_host_u32 (ike->msgid), len); + + sa->ispi = clib_net_to_host_u64 (ike->ispi); + + /* store whole IKE payload - needed for PSK auth */ + vec_free (sa->last_sa_init_req_packet_data); + vec_add (sa->last_sa_init_req_packet_data, ike, len); + + while (p < len && payload != IKEV2_PAYLOAD_NONE) + { + ike_payload_header_t *ikep = (ike_payload_header_t *) & ike->payload[p]; + u32 plen = clib_net_to_host_u16 (ikep->length); + + if (plen < sizeof (ike_payload_header_t)) + return; + + if (payload == IKEV2_PAYLOAD_SA) + { + ikev2_sa_free_proposal_vector (&sa->i_proposals); + sa->i_proposals = ikev2_parse_sa_payload (ikep); + } + else if (payload == IKEV2_PAYLOAD_KE) + { + ike_ke_payload_header_t *ke = (ike_ke_payload_header_t *) ikep; + sa->dh_group = clib_net_to_host_u16 (ke->dh_group); + vec_free (sa->i_dh_data); + vec_add (sa->i_dh_data, ke->payload, plen - sizeof (*ke)); + } + else if (payload == IKEV2_PAYLOAD_NONCE) + { + vec_free (sa->i_nonce); + vec_add (sa->i_nonce, ikep->payload, plen - sizeof (*ikep)); + } + else if (payload == IKEV2_PAYLOAD_NOTIFY) + { + ikev2_notify_t *n = ikev2_parse_notify_payload (ikep); + vec_free (n); + } + else if (payload == IKEV2_PAYLOAD_VENDOR) + { + ikev2_parse_vendor_payload (ikep); + } + else + { + clib_warning ("unknown payload %u flags %x length %u", payload, + ikep->flags, plen); + if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL) + { + ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE); + sa->unsupported_cp = payload; + return; + } + } + + payload = ikep->nextpayload; + p += plen; + } + + ikev2_set_state (sa, IKEV2_STATE_SA_INIT); +} + +static void +ikev2_process_sa_init_resp (vlib_main_t * vm, ikev2_sa_t * sa, + ike_header_t * ike) +{ + int p = 0; + u32 len = clib_net_to_host_u32 (ike->length); + u8 payload = ike->nextpayload; + + clib_warning ("ispi %lx rspi %lx nextpayload %x version %x " + "exchange %x flags %x msgid %x length %u", + clib_net_to_host_u64 (ike->ispi), + clib_net_to_host_u64 (ike->rspi), + payload, ike->version, + ike->exchange, ike->flags, + clib_net_to_host_u32 (ike->msgid), len); + + sa->ispi = clib_net_to_host_u64 (ike->ispi); + sa->rspi = clib_net_to_host_u64 (ike->rspi); + + /* store whole IKE payload - needed for PSK auth */ + vec_free (sa->last_sa_init_res_packet_data); + vec_add (sa->last_sa_init_res_packet_data, ike, len); + + while (p < len && payload != IKEV2_PAYLOAD_NONE) + { + ike_payload_header_t *ikep = (ike_payload_header_t *) & ike->payload[p]; + u32 plen = clib_net_to_host_u16 (ikep->length); + + if (plen < sizeof (ike_payload_header_t)) + return; + + if (payload == IKEV2_PAYLOAD_SA) + { + ikev2_sa_free_proposal_vector (&sa->r_proposals); + sa->r_proposals = ikev2_parse_sa_payload (ikep); + if (sa->r_proposals) + { + ikev2_set_state (sa, IKEV2_STATE_SA_INIT); + ike->msgid = + clib_host_to_net_u32 (clib_net_to_host_u32 (ike->msgid) + 1); + } + } + else if (payload == IKEV2_PAYLOAD_KE) + { + ike_ke_payload_header_t *ke = (ike_ke_payload_header_t *) ikep; + sa->dh_group = clib_net_to_host_u16 (ke->dh_group); + vec_free (sa->r_dh_data); + vec_add (sa->r_dh_data, ke->payload, plen - sizeof (*ke)); + } + else if (payload == IKEV2_PAYLOAD_NONCE) + { + vec_free (sa->r_nonce); + vec_add (sa->r_nonce, ikep->payload, plen - sizeof (*ikep)); + } + else if (payload == IKEV2_PAYLOAD_NOTIFY) + { + ikev2_notify_t *n = ikev2_parse_notify_payload (ikep); + vec_free (n); + } + else if (payload == IKEV2_PAYLOAD_VENDOR) + { + ikev2_parse_vendor_payload (ikep); + } + else + { + clib_warning ("unknown payload %u flags %x length %u", payload, + ikep->flags, plen); + if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL) + { + ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE); + sa->unsupported_cp = payload; + return; + } + } + + payload = ikep->nextpayload; + p += plen; + } +} + +static u8 * +ikev2_decrypt_sk_payload (ikev2_sa_t * sa, ike_header_t * ike, u8 * payload) +{ + int p = 0; + u8 last_payload = 0; + u8 *hmac = 0; + u32 len = clib_net_to_host_u32 (ike->length); + ike_payload_header_t *ikep = 0; + u32 plen = 0; + ikev2_sa_transform_t *tr_integ; + tr_integ = + ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_INTEG); + + while (p < len && + *payload != IKEV2_PAYLOAD_NONE && last_payload != IKEV2_PAYLOAD_SK) + { + ikep = (ike_payload_header_t *) & ike->payload[p]; + plen = clib_net_to_host_u16 (ikep->length); + + if (plen < sizeof (*ikep)) + return 0; + + if (*payload == IKEV2_PAYLOAD_SK) + { + clib_warning ("received IKEv2 payload SK, len %u", plen - 4); + last_payload = *payload; + } + else + { + clib_warning ("unknown payload %u flags %x length %u", payload, + ikep->flags, plen); + if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL) + { + sa->unsupported_cp = *payload; + return 0; + } + } + + *payload = ikep->nextpayload; + p += plen; + } + + if (last_payload != IKEV2_PAYLOAD_SK) + { + clib_warning ("Last payload must be SK"); + return 0; + } + + hmac = + ikev2_calc_integr (tr_integ, sa->is_initiator ? sa->sk_ar : sa->sk_ai, + (u8 *) ike, len - tr_integ->key_trunc); + + plen = plen - sizeof (*ikep) - tr_integ->key_trunc; + + if (memcmp (hmac, &ikep->payload[plen], tr_integ->key_trunc)) + { + clib_warning ("message integrity check failed"); + vec_free (hmac); + return 0; + } + vec_free (hmac); + + return ikev2_decrypt_data (sa, ikep->payload, plen); +} + +static void +ikev2_initial_contact_cleanup (ikev2_sa_t * sa) +{ + ikev2_main_t *km = &ikev2_main; + ikev2_sa_t *tmp; + u32 i, *delete = 0; + ikev2_child_sa_t *c; + u32 thread_index = vlib_get_thread_index (); + + if (!sa->initial_contact) + return; + + /* find old IKE SAs with the same authenticated identity */ + /* *INDENT-OFF* */ + pool_foreach (tmp, km->per_thread_data[thread_index].sas, ({ + if (tmp->i_id.type != sa->i_id.type || + vec_len(tmp->i_id.data) != vec_len(sa->i_id.data) || + memcmp(sa->i_id.data, tmp->i_id.data, vec_len(sa->i_id.data))) + continue; + + if (sa->rspi != tmp->rspi) + vec_add1(delete, tmp - km->per_thread_data[thread_index].sas); + })); + /* *INDENT-ON* */ + + for (i = 0; i < vec_len (delete); i++) + { + tmp = + pool_elt_at_index (km->per_thread_data[thread_index].sas, delete[i]); + vec_foreach (c, + tmp->childs) ikev2_delete_tunnel_interface (km->vnet_main, + tmp, c); + ikev2_delete_sa (tmp); + } + + vec_free (delete); + sa->initial_contact = 0; +} + +static void +ikev2_process_auth_req (vlib_main_t * vm, ikev2_sa_t * sa, ike_header_t * ike) +{ + ikev2_child_sa_t *first_child_sa; + int p = 0; + u32 len = clib_net_to_host_u32 (ike->length); + u8 payload = ike->nextpayload; + u8 *plaintext = 0; + + ike_payload_header_t *ikep; + u32 plen; + + clib_warning ("ispi %lx rspi %lx nextpayload %x version %x " + "exchange %x flags %x msgid %x length %u", + clib_net_to_host_u64 (ike->ispi), + clib_net_to_host_u64 (ike->rspi), + payload, ike->version, + ike->exchange, ike->flags, + clib_net_to_host_u32 (ike->msgid), len); + + ikev2_calc_keys (sa); + + plaintext = ikev2_decrypt_sk_payload (sa, ike, &payload); + + if (!plaintext) + { + if (sa->unsupported_cp) + ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE); + goto cleanup_and_exit; + } + + /* select or create 1st child SA */ + if (sa->is_initiator) + { + first_child_sa = &sa->childs[0]; + } + else + { + ikev2_sa_free_all_child_sa (&sa->childs); + vec_add2 (sa->childs, first_child_sa, 1); + } + + + /* process encrypted payload */ + p = 0; + while (p < vec_len (plaintext) && payload != IKEV2_PAYLOAD_NONE) + { + ikep = (ike_payload_header_t *) & plaintext[p]; + plen = clib_net_to_host_u16 (ikep->length); + + if (plen < sizeof (ike_payload_header_t)) + goto cleanup_and_exit; + + if (payload == IKEV2_PAYLOAD_SA) /* 33 */ + { + clib_warning ("received payload SA, len %u", plen - sizeof (*ikep)); + if (sa->is_initiator) + { + ikev2_sa_free_proposal_vector (&first_child_sa->r_proposals); + first_child_sa->r_proposals = ikev2_parse_sa_payload (ikep); + } + else + { + ikev2_sa_free_proposal_vector (&first_child_sa->i_proposals); + first_child_sa->i_proposals = ikev2_parse_sa_payload (ikep); + } + } + else if (payload == IKEV2_PAYLOAD_IDI) /* 35 */ + { + ike_id_payload_header_t *id = (ike_id_payload_header_t *) ikep; + + sa->i_id.type = id->id_type; + vec_free (sa->i_id.data); + vec_add (sa->i_id.data, id->payload, plen - sizeof (*id)); + + clib_warning ("received payload IDi, len %u id_type %u", + plen - sizeof (*id), id->id_type); + } + else if (payload == IKEV2_PAYLOAD_IDR) /* 36 */ + { + ike_id_payload_header_t *id = (ike_id_payload_header_t *) ikep; + + sa->r_id.type = id->id_type; + vec_free (sa->r_id.data); + vec_add (sa->r_id.data, id->payload, plen - sizeof (*id)); + + clib_warning ("received payload IDr len %u id_type %u", + plen - sizeof (*id), id->id_type); + } + else if (payload == IKEV2_PAYLOAD_AUTH) /* 39 */ + { + ike_auth_payload_header_t *a = (ike_auth_payload_header_t *) ikep; + + if (sa->is_initiator) + { + sa->r_auth.method = a->auth_method; + vec_free (sa->r_auth.data); + vec_add (sa->r_auth.data, a->payload, plen - sizeof (*a)); + } + else + { + sa->i_auth.method = a->auth_method; + vec_free (sa->i_auth.data); + vec_add (sa->i_auth.data, a->payload, plen - sizeof (*a)); + } + + clib_warning ("received payload AUTH, len %u auth_type %u", + plen - sizeof (*a), a->auth_method); + } + else if (payload == IKEV2_PAYLOAD_NOTIFY) /* 41 */ + { + ikev2_notify_t *n = ikev2_parse_notify_payload (ikep); + if (n->msg_type == IKEV2_NOTIFY_MSG_INITIAL_CONTACT) + { + sa->initial_contact = 1; + } + vec_free (n); + } + else if (payload == IKEV2_PAYLOAD_VENDOR) /* 43 */ + { + ikev2_parse_vendor_payload (ikep); + } + else if (payload == IKEV2_PAYLOAD_TSI) /* 44 */ + { + clib_warning ("received payload TSi, len %u", + plen - sizeof (*ikep)); + + vec_free (first_child_sa->tsi); + first_child_sa->tsi = ikev2_parse_ts_payload (ikep); + } + else if (payload == IKEV2_PAYLOAD_TSR) /* 45 */ + { + clib_warning ("received payload TSr, len %u", + plen - sizeof (*ikep)); + + vec_free (first_child_sa->tsr); + first_child_sa->tsr = ikev2_parse_ts_payload (ikep); + } + else + { + clib_warning ("unknown payload %u flags %x length %u data %u", + payload, ikep->flags, plen - 4, + format_hex_bytes, ikep->payload, plen - 4); + + if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL) + { + ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE); + sa->unsupported_cp = payload; + return; + } + } + + payload = ikep->nextpayload; + p += plen; + } + +cleanup_and_exit: + vec_free (plaintext); +} + +static void +ikev2_process_informational_req (vlib_main_t * vm, ikev2_sa_t * sa, + ike_header_t * ike) +{ + int p = 0; + u32 len = clib_net_to_host_u32 (ike->length); + u8 payload = ike->nextpayload; + u8 *plaintext = 0; + + ike_payload_header_t *ikep; + u32 plen; + + clib_warning ("ispi %lx rspi %lx nextpayload %x version %x " + "exchange %x flags %x msgid %x length %u", + clib_net_to_host_u64 (ike->ispi), + clib_net_to_host_u64 (ike->rspi), + payload, ike->version, + ike->exchange, ike->flags, + clib_net_to_host_u32 (ike->msgid), len); + + plaintext = ikev2_decrypt_sk_payload (sa, ike, &payload); + + if (!plaintext) + goto cleanup_and_exit; + + /* process encrypted payload */ + p = 0; + while (p < vec_len (plaintext) && payload != IKEV2_PAYLOAD_NONE) + { + ikep = (ike_payload_header_t *) & plaintext[p]; + plen = clib_net_to_host_u16 (ikep->length); + + if (plen < sizeof (ike_payload_header_t)) + goto cleanup_and_exit; + + if (payload == IKEV2_PAYLOAD_NOTIFY) /* 41 */ + { + ikev2_notify_t *n = ikev2_parse_notify_payload (ikep); + if (n->msg_type == IKEV2_NOTIFY_MSG_AUTHENTICATION_FAILED) + ikev2_set_state (sa, IKEV2_STATE_AUTH_FAILED); + vec_free (n); + } + else if (payload == IKEV2_PAYLOAD_DELETE) /* 42 */ + { + sa->del = ikev2_parse_delete_payload (ikep); + } + else if (payload == IKEV2_PAYLOAD_VENDOR) /* 43 */ + { + ikev2_parse_vendor_payload (ikep); + } + else + { + clib_warning ("unknown payload %u flags %x length %u data %u", + payload, ikep->flags, plen - 4, + format_hex_bytes, ikep->payload, plen - 4); + + if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL) + { + sa->unsupported_cp = payload; + return; + } + } + + payload = ikep->nextpayload; + p += plen; + } + +cleanup_and_exit: + vec_free (plaintext); +} + +static void +ikev2_process_create_child_sa_req (vlib_main_t * vm, ikev2_sa_t * sa, + ike_header_t * ike) +{ + int p = 0; + u32 len = clib_net_to_host_u32 (ike->length); + u8 payload = ike->nextpayload; + u8 *plaintext = 0; + u8 rekeying = 0; + u8 nonce[IKEV2_NONCE_SIZE]; + + ike_payload_header_t *ikep; + u32 plen; + ikev2_notify_t *n = 0; + ikev2_ts_t *tsi = 0; + ikev2_ts_t *tsr = 0; + ikev2_sa_proposal_t *proposal = 0; + ikev2_child_sa_t *child_sa; + + clib_warning ("ispi %lx rspi %lx nextpayload %x version %x " + "exchange %x flags %x msgid %x length %u", + clib_net_to_host_u64 (ike->ispi), + clib_net_to_host_u64 (ike->rspi), + payload, ike->version, + ike->exchange, ike->flags, + clib_net_to_host_u32 (ike->msgid), len); + + plaintext = ikev2_decrypt_sk_payload (sa, ike, &payload); + + if (!plaintext) + goto cleanup_and_exit; + + /* process encrypted payload */ + p = 0; + while (p < vec_len (plaintext) && payload != IKEV2_PAYLOAD_NONE) + { + ikep = (ike_payload_header_t *) & plaintext[p]; + plen = clib_net_to_host_u16 (ikep->length); + + if (plen < sizeof (ike_payload_header_t)) + goto cleanup_and_exit; + + else if (payload == IKEV2_PAYLOAD_SA) + { + proposal = ikev2_parse_sa_payload (ikep); + } + else if (payload == IKEV2_PAYLOAD_NOTIFY) + { + n = ikev2_parse_notify_payload (ikep); + if (n->msg_type == IKEV2_NOTIFY_MSG_REKEY_SA) + { + rekeying = 1; + } + } + else if (payload == IKEV2_PAYLOAD_DELETE) + { + sa->del = ikev2_parse_delete_payload (ikep); + } + else if (payload == IKEV2_PAYLOAD_VENDOR) + { + ikev2_parse_vendor_payload (ikep); + } + else if (payload == IKEV2_PAYLOAD_NONCE) + { + clib_memcpy_fast (nonce, ikep->payload, plen - sizeof (*ikep)); + } + else if (payload == IKEV2_PAYLOAD_TSI) + { + tsi = ikev2_parse_ts_payload (ikep); + } + else if (payload == IKEV2_PAYLOAD_TSR) + { + tsr = ikev2_parse_ts_payload (ikep); + } + else + { + clib_warning ("unknown payload %u flags %x length %u data %u", + payload, ikep->flags, plen - 4, + format_hex_bytes, ikep->payload, plen - 4); + + if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL) + { + sa->unsupported_cp = payload; + return; + } + } + + payload = ikep->nextpayload; + p += plen; + } + + if (sa->is_initiator && proposal->protocol_id == IKEV2_PROTOCOL_ESP) + { + ikev2_rekey_t *rekey = &sa->rekey[0]; + rekey->protocol_id = proposal->protocol_id; + rekey->i_proposal = + ikev2_select_proposal (proposal, IKEV2_PROTOCOL_ESP); + rekey->i_proposal->spi = rekey->spi; + rekey->r_proposal = proposal; + rekey->tsi = tsi; + rekey->tsr = tsr; + /* update Nr */ + vec_free (sa->r_nonce); + vec_add (sa->r_nonce, nonce, IKEV2_NONCE_SIZE); + child_sa = ikev2_sa_get_child (sa, rekey->ispi, IKEV2_PROTOCOL_ESP, 1); + if (child_sa) + { + child_sa->rekey_retries = 0; + } + } + else if (rekeying) + { + ikev2_rekey_t *rekey; + child_sa = ikev2_sa_get_child (sa, n->spi, n->protocol_id, 1); + if (!child_sa) + { + clib_warning ("child SA spi %lx not found", n->spi); + goto cleanup_and_exit; + } + vec_add2 (sa->rekey, rekey, 1); + rekey->protocol_id = n->protocol_id; + rekey->spi = n->spi; + rekey->i_proposal = proposal; + rekey->r_proposal = + ikev2_select_proposal (proposal, IKEV2_PROTOCOL_ESP); + rekey->tsi = tsi; + rekey->tsr = tsr; + /* update Ni */ + vec_free (sa->i_nonce); + vec_add (sa->i_nonce, nonce, IKEV2_NONCE_SIZE); + /* generate new Nr */ + vec_free (sa->r_nonce); + sa->r_nonce = vec_new (u8, IKEV2_NONCE_SIZE); + RAND_bytes ((u8 *) sa->r_nonce, IKEV2_NONCE_SIZE); + } + +cleanup_and_exit: + vec_free (plaintext); + vec_free (n); +} + +static u8 * +ikev2_sa_generate_authmsg (ikev2_sa_t * sa, int is_responder) +{ + u8 *authmsg = 0; + u8 *data; + u8 *nonce; + ikev2_id_t *id; + u8 *key; + u8 *packet_data; + ikev2_sa_transform_t *tr_prf; + + tr_prf = + ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_PRF); + + if (is_responder) + { + id = &sa->r_id; + key = sa->sk_pr; + nonce = sa->i_nonce; + packet_data = sa->last_sa_init_res_packet_data; + } + else + { + id = &sa->i_id; + key = sa->sk_pi; + nonce = sa->r_nonce; + packet_data = sa->last_sa_init_req_packet_data; + } + + data = vec_new (u8, 4); + data[0] = id->type; + vec_append (data, id->data); + + u8 *id_hash = ikev2_calc_prf (tr_prf, key, data); + vec_append (authmsg, packet_data); + vec_append (authmsg, nonce); + vec_append (authmsg, id_hash); + vec_free (id_hash); + vec_free (data); + + return authmsg; +} + +static int +ikev2_ts_cmp (ikev2_ts_t * ts1, ikev2_ts_t * ts2) +{ + if (ts1->ts_type == ts2->ts_type && ts1->protocol_id == ts2->protocol_id && + ts1->start_port == ts2->start_port && ts1->end_port == ts2->end_port && + ts1->start_addr.as_u32 == ts2->start_addr.as_u32 && + ts1->end_addr.as_u32 == ts2->end_addr.as_u32) + return 1; + + return 0; +} + +static void +ikev2_sa_match_ts (ikev2_sa_t * sa) +{ + ikev2_main_t *km = &ikev2_main; + ikev2_profile_t *p; + ikev2_ts_t *ts, *p_tsi, *p_tsr, *tsi = 0, *tsr = 0; + ikev2_id_t *id; + + /* *INDENT-OFF* */ + pool_foreach (p, km->profiles, ({ + + if (sa->is_initiator) + { + p_tsi = &p->loc_ts; + p_tsr = &p->rem_ts; + id = &sa->r_id; + } + else + { + p_tsi = &p->rem_ts; + p_tsr = &p->loc_ts; + id = &sa->i_id; + } + + /* check id */ + if (p->rem_id.type != id->type || + vec_len(p->rem_id.data) != vec_len(id->data) || + memcmp(p->rem_id.data, id->data, vec_len(p->rem_id.data))) + continue; + + vec_foreach(ts, sa->childs[0].tsi) + { + if (ikev2_ts_cmp(p_tsi, ts)) + { + tsi = vec_dup(ts); + break; + } + } + + vec_foreach(ts, sa->childs[0].tsr) + { + if (ikev2_ts_cmp(p_tsr, ts)) + { + tsr = vec_dup(ts); + break; + } + } + + break; + })); + /* *INDENT-ON* */ + + if (tsi && tsr) + { + vec_free (sa->childs[0].tsi); + vec_free (sa->childs[0].tsr); + sa->childs[0].tsi = tsi; + sa->childs[0].tsr = tsr; + } + else + { + vec_free (tsi); + vec_free (tsr); + ikev2_set_state (sa, IKEV2_STATE_TS_UNACCEPTABLE); + } +} + +static void +ikev2_sa_auth (ikev2_sa_t * sa) +{ + ikev2_main_t *km = &ikev2_main; + ikev2_profile_t *p, *sel_p = 0; + u8 *authmsg, *key_pad, *psk = 0, *auth = 0; + ikev2_sa_transform_t *tr_prf; + + tr_prf = + ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_PRF); + + /* only shared key and rsa signature */ + if (!(sa->i_auth.method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC || + sa->i_auth.method == IKEV2_AUTH_METHOD_RSA_SIG)) + { + clib_warning ("unsupported authentication method %u", + sa->i_auth.method); + ikev2_set_state (sa, IKEV2_STATE_AUTH_FAILED); + return; + } + + key_pad = format (0, "%s", IKEV2_KEY_PAD); + authmsg = ikev2_sa_generate_authmsg (sa, sa->is_initiator); + + ikev2_id_t *sa_id; + ikev2_auth_t *sa_auth; + + if (sa->is_initiator) + { + sa_id = &sa->r_id; + sa_auth = &sa->r_auth; + } + else + { + sa_id = &sa->i_id; + sa_auth = &sa->i_auth; + } + + /* *INDENT-OFF* */ + pool_foreach (p, km->profiles, ({ + + /* check id */ + if (p->rem_id.type != sa_id->type || + vec_len(p->rem_id.data) != vec_len(sa_id->data) || + memcmp(p->rem_id.data, sa_id->data, vec_len(p->rem_id.data))) + continue; + + if (sa_auth->method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC) + { + if (!p->auth.data || + p->auth.method != IKEV2_AUTH_METHOD_SHARED_KEY_MIC) + continue; + + psk = ikev2_calc_prf(tr_prf, p->auth.data, key_pad); + auth = ikev2_calc_prf(tr_prf, psk, authmsg); + + if (!memcmp(auth, sa_auth->data, vec_len(sa_auth->data))) + { + ikev2_set_state(sa, IKEV2_STATE_AUTHENTICATED); + vec_free(auth); + sel_p = p; + break; + } + + } + else if (sa_auth->method == IKEV2_AUTH_METHOD_RSA_SIG) + { + if (p->auth.method != IKEV2_AUTH_METHOD_RSA_SIG) + continue; + + if (ikev2_verify_sign(p->auth.key, sa_auth->data, authmsg) == 1) + { + ikev2_set_state(sa, IKEV2_STATE_AUTHENTICATED); + sel_p = p; + break; + } + } + + vec_free(auth); + vec_free(psk); + })); + /* *INDENT-ON* */ + + vec_free (authmsg); + + if (sa->state == IKEV2_STATE_AUTHENTICATED) + { + if (!sa->is_initiator) + { + vec_free (sa->r_id.data); + sa->r_id.data = vec_dup (sel_p->loc_id.data); + sa->r_id.type = sel_p->loc_id.type; + + /* generate our auth data */ + authmsg = ikev2_sa_generate_authmsg (sa, 1); + if (sel_p->auth.method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC) + { + sa->r_auth.data = ikev2_calc_prf (tr_prf, psk, authmsg); + sa->r_auth.method = IKEV2_AUTH_METHOD_SHARED_KEY_MIC; + } + else if (sel_p->auth.method == IKEV2_AUTH_METHOD_RSA_SIG) + { + sa->r_auth.data = ikev2_calc_sign (km->pkey, authmsg); + sa->r_auth.method = IKEV2_AUTH_METHOD_RSA_SIG; + } + vec_free (authmsg); + + /* select transforms for 1st child sa */ + ikev2_sa_free_proposal_vector (&sa->childs[0].r_proposals); + sa->childs[0].r_proposals = + ikev2_select_proposal (sa->childs[0].i_proposals, + IKEV2_PROTOCOL_ESP); + } + } + else + { + ikev2_set_state (sa, IKEV2_STATE_AUTH_FAILED); + } + vec_free (psk); + vec_free (key_pad); +} + + +static void +ikev2_sa_auth_init (ikev2_sa_t * sa) +{ + ikev2_main_t *km = &ikev2_main; + u8 *authmsg, *key_pad, *psk = 0, *auth = 0; + ikev2_sa_transform_t *tr_prf; + + tr_prf = + ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_PRF); + + /* only shared key and rsa signature */ + if (!(sa->i_auth.method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC || + sa->i_auth.method == IKEV2_AUTH_METHOD_RSA_SIG)) + { + clib_warning ("unsupported authentication method %u", + sa->i_auth.method); + ikev2_set_state (sa, IKEV2_STATE_AUTH_FAILED); + return; + } + + key_pad = format (0, "%s", IKEV2_KEY_PAD); + authmsg = ikev2_sa_generate_authmsg (sa, 0); + psk = ikev2_calc_prf (tr_prf, sa->i_auth.data, key_pad); + auth = ikev2_calc_prf (tr_prf, psk, authmsg); + + + if (sa->i_auth.method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC) + { + sa->i_auth.data = ikev2_calc_prf (tr_prf, psk, authmsg); + sa->i_auth.method = IKEV2_AUTH_METHOD_SHARED_KEY_MIC; + } + else if (sa->i_auth.method == IKEV2_AUTH_METHOD_RSA_SIG) + { + sa->i_auth.data = ikev2_calc_sign (km->pkey, authmsg); + sa->i_auth.method = IKEV2_AUTH_METHOD_RSA_SIG; + } + + vec_free (psk); + vec_free (key_pad); + vec_free (auth); + vec_free (authmsg); +} + + +static int +ikev2_create_tunnel_interface (vnet_main_t * vnm, ikev2_sa_t * sa, + ikev2_child_sa_t * child) +{ + ipsec_add_del_tunnel_args_t a; + ikev2_sa_transform_t *tr; + ikev2_sa_proposal_t *proposals; + u8 encr_type = 0; + u8 integ_type = 0; + + if (!child->r_proposals) + { + ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN); + return 1; + } + + clib_memset (&a, 0, sizeof (a)); + a.is_add = 1; + if (sa->is_initiator) + { + a.local_ip.ip4.as_u32 = sa->iaddr.as_u32; + a.remote_ip.ip4.as_u32 = sa->raddr.as_u32; + proposals = child->i_proposals; + a.local_spi = child->r_proposals[0].spi; + a.remote_spi = child->i_proposals[0].spi; + } + else + { + a.local_ip.ip4.as_u32 = sa->raddr.as_u32; + a.remote_ip.ip4.as_u32 = sa->iaddr.as_u32; + proposals = child->r_proposals; + a.local_spi = child->i_proposals[0].spi; + a.remote_spi = child->r_proposals[0].spi; + } + a.anti_replay = 1; + + tr = ikev2_sa_get_td_for_type (proposals, IKEV2_TRANSFORM_TYPE_ESN); + if (tr) + a.esn = tr->esn_type; + else + a.esn = 0; + + tr = ikev2_sa_get_td_for_type (proposals, IKEV2_TRANSFORM_TYPE_ENCR); + if (tr) + { + if (tr->encr_type == IKEV2_TRANSFORM_ENCR_TYPE_AES_CBC && tr->key_len) + { + switch (tr->key_len) + { + case 16: + encr_type = IPSEC_CRYPTO_ALG_AES_CBC_128; + break; + case 24: + encr_type = IPSEC_CRYPTO_ALG_AES_CBC_192; + break; + case 32: + encr_type = IPSEC_CRYPTO_ALG_AES_CBC_256; + break; + default: + ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN); + return 1; + break; + } + } + else + { + ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN); + return 1; + } + } + else + { + ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN); + return 1; + } + + tr = ikev2_sa_get_td_for_type (proposals, IKEV2_TRANSFORM_TYPE_INTEG); + if (tr) + { + switch (tr->integ_type) + { + case IKEV2_TRANSFORM_INTEG_TYPE_AUTH_HMAC_SHA2_256_128: + integ_type = IPSEC_INTEG_ALG_SHA_256_128; + break; + case IKEV2_TRANSFORM_INTEG_TYPE_AUTH_HMAC_SHA2_384_192: + integ_type = IPSEC_INTEG_ALG_SHA_384_192; + break; + case IKEV2_TRANSFORM_INTEG_TYPE_AUTH_HMAC_SHA2_512_256: + integ_type = IPSEC_INTEG_ALG_SHA_512_256; + break; + case IKEV2_TRANSFORM_INTEG_TYPE_AUTH_HMAC_SHA1_96: + integ_type = IPSEC_INTEG_ALG_SHA1_96; + break; + default: + ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN); + return 1; + } + } + else + { + ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN); + return 1; + } + + ikev2_calc_child_keys (sa, child); + + u8 *loc_ckey, *rem_ckey, *loc_ikey, *rem_ikey; + if (sa->is_initiator) + { + loc_ikey = child->sk_ai; + rem_ikey = child->sk_ar; + loc_ckey = child->sk_ei; + rem_ckey = child->sk_er; + } + else + { + loc_ikey = child->sk_ar; + rem_ikey = child->sk_ai; + loc_ckey = child->sk_er; + rem_ckey = child->sk_ei; + } + + a.integ_alg = integ_type; + a.local_integ_key_len = vec_len (loc_ikey); + clib_memcpy_fast (a.local_integ_key, loc_ikey, a.local_integ_key_len); + a.remote_integ_key_len = vec_len (rem_ikey); + clib_memcpy_fast (a.remote_integ_key, rem_ikey, a.remote_integ_key_len); + + a.crypto_alg = encr_type; + a.local_crypto_key_len = vec_len (loc_ckey); + clib_memcpy_fast (a.local_crypto_key, loc_ckey, a.local_crypto_key_len); + a.remote_crypto_key_len = vec_len (rem_ckey); + clib_memcpy_fast (a.remote_crypto_key, rem_ckey, a.remote_crypto_key_len); + + if (sa->profile && sa->profile->lifetime) + { + child->time_to_expiration = vlib_time_now (vnm->vlib_main) + + sa->profile->lifetime; + if (sa->profile->lifetime_jitter) + { + // This is not much better than rand(3), which Coverity warns + // is unsuitable for security applications; random_u32 is + // however fast. If this perturbance to the expiration time + // needs to use a better RNG then we may need to use something + // like /dev/urandom which has significant overhead. + u32 rnd = (u32) (vlib_time_now (vnm->vlib_main) * 1e6); + rnd = random_u32 (&rnd); + + child->time_to_expiration += + 1 + (rnd % sa->profile->lifetime_jitter); + } + } + + ipsec_add_del_tunnel_if (&a); + + return 0; +} + +static int +ikev2_delete_tunnel_interface (vnet_main_t * vnm, ikev2_sa_t * sa, + ikev2_child_sa_t * child) +{ + ipsec_add_del_tunnel_args_t a; + + if (sa->is_initiator) + { + if (!vec_len (child->i_proposals)) + return 0; + + a.is_add = 0; + a.local_ip.ip4.as_u32 = sa->iaddr.as_u32; + a.remote_ip.ip4.as_u32 = sa->raddr.as_u32; + a.local_spi = child->r_proposals[0].spi; + a.remote_spi = child->i_proposals[0].spi; + } + else + { + if (!vec_len (child->r_proposals)) + return 0; + + a.is_add = 0; + a.local_ip.ip4.as_u32 = sa->raddr.as_u32; + a.remote_ip.ip4.as_u32 = sa->iaddr.as_u32; + a.local_spi = child->i_proposals[0].spi; + a.remote_spi = child->r_proposals[0].spi; + } + + ipsec_add_del_tunnel_if (&a); + return 0; +} + +static u32 +ikev2_generate_message (ikev2_sa_t * sa, ike_header_t * ike, void *user) +{ + v8 *integ = 0; + ike_payload_header_t *ph; + u16 plen; + u32 tlen = 0; + + ikev2_sa_transform_t *tr_encr, *tr_integ; + tr_encr = + ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_ENCR); + tr_integ = + ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_INTEG); + + ikev2_payload_chain_t *chain = 0; + ikev2_payload_new_chain (chain); + + if (ike->exchange == IKEV2_EXCHANGE_SA_INIT) + { + if (sa->r_proposals == 0) + { + ikev2_payload_add_notify (chain, + IKEV2_NOTIFY_MSG_NO_PROPOSAL_CHOSEN, 0); + ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE); + } + else if (sa->dh_group == IKEV2_TRANSFORM_DH_TYPE_NONE) + { + u8 *data = vec_new (u8, 2); + ikev2_sa_transform_t *tr_dh; + tr_dh = + ikev2_sa_get_td_for_type (sa->r_proposals, + IKEV2_TRANSFORM_TYPE_DH); + ASSERT (tr_dh && tr_dh->dh_type); + + data[0] = (tr_dh->dh_type >> 8) & 0xff; + data[1] = (tr_dh->dh_type) & 0xff; + + ikev2_payload_add_notify (chain, + IKEV2_NOTIFY_MSG_INVALID_KE_PAYLOAD, + data); + vec_free (data); + ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE); + } + else if (sa->state == IKEV2_STATE_NOTIFY_AND_DELETE) + { + u8 *data = vec_new (u8, 1); + + data[0] = sa->unsupported_cp; + ikev2_payload_add_notify (chain, + IKEV2_NOTIFY_MSG_UNSUPPORTED_CRITICAL_PAYLOAD, + data); + vec_free (data); + } + else + { + ike->rspi = clib_host_to_net_u64 (sa->rspi); + ikev2_payload_add_sa (chain, sa->r_proposals); + ikev2_payload_add_ke (chain, sa->dh_group, sa->r_dh_data); + ikev2_payload_add_nonce (chain, sa->r_nonce); + } + } + else if (ike->exchange == IKEV2_EXCHANGE_IKE_AUTH) + { + if (sa->state == IKEV2_STATE_AUTHENTICATED) + { + ikev2_payload_add_id (chain, &sa->r_id, IKEV2_PAYLOAD_IDR); + ikev2_payload_add_auth (chain, &sa->r_auth); + ikev2_payload_add_sa (chain, sa->childs[0].r_proposals); + ikev2_payload_add_ts (chain, sa->childs[0].tsi, IKEV2_PAYLOAD_TSI); + ikev2_payload_add_ts (chain, sa->childs[0].tsr, IKEV2_PAYLOAD_TSR); + } + else if (sa->state == IKEV2_STATE_AUTH_FAILED) + { + ikev2_payload_add_notify (chain, + IKEV2_NOTIFY_MSG_AUTHENTICATION_FAILED, + 0); + ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE); + } + else if (sa->state == IKEV2_STATE_TS_UNACCEPTABLE) + { + ikev2_payload_add_notify (chain, IKEV2_NOTIFY_MSG_TS_UNACCEPTABLE, + 0); + ikev2_payload_add_id (chain, &sa->r_id, IKEV2_PAYLOAD_IDR); + ikev2_payload_add_auth (chain, &sa->r_auth); + } + else if (sa->state == IKEV2_STATE_NO_PROPOSAL_CHOSEN) + { + ikev2_payload_add_notify (chain, + IKEV2_NOTIFY_MSG_NO_PROPOSAL_CHOSEN, 0); + ikev2_payload_add_id (chain, &sa->r_id, IKEV2_PAYLOAD_IDR); + ikev2_payload_add_auth (chain, &sa->r_auth); + ikev2_payload_add_ts (chain, sa->childs[0].tsi, IKEV2_PAYLOAD_TSI); + ikev2_payload_add_ts (chain, sa->childs[0].tsr, IKEV2_PAYLOAD_TSR); + } + else if (sa->state == IKEV2_STATE_NOTIFY_AND_DELETE) + { + u8 *data = vec_new (u8, 1); + + data[0] = sa->unsupported_cp; + ikev2_payload_add_notify (chain, + IKEV2_NOTIFY_MSG_UNSUPPORTED_CRITICAL_PAYLOAD, + data); + vec_free (data); + } + else if (sa->state == IKEV2_STATE_SA_INIT) + { + ikev2_payload_add_id (chain, &sa->i_id, IKEV2_PAYLOAD_IDI); + ikev2_payload_add_auth (chain, &sa->i_auth); + ikev2_payload_add_sa (chain, sa->childs[0].i_proposals); + ikev2_payload_add_ts (chain, sa->childs[0].tsi, IKEV2_PAYLOAD_TSI); + ikev2_payload_add_ts (chain, sa->childs[0].tsr, IKEV2_PAYLOAD_TSR); + } + else + { + ikev2_set_state (sa, IKEV2_STATE_DELETED); + goto done; + } + } + else if (ike->exchange == IKEV2_EXCHANGE_INFORMATIONAL) + { + /* if pending delete */ + if (sa->del) + { + if (sa->del[0].protocol_id == IKEV2_PROTOCOL_IKE) + { + if (sa->is_initiator) + ikev2_payload_add_delete (chain, sa->del); + + /* The response to a request that deletes the IKE SA is an empty + INFORMATIONAL response. */ + ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE); + } + /* The response to a request that deletes ESP or AH SAs will contain + delete payloads for the paired SAs going in the other direction. */ + else + { + ikev2_payload_add_delete (chain, sa->del); + } + vec_free (sa->del); + sa->del = 0; + } + /* received N(AUTHENTICATION_FAILED) */ + else if (sa->state == IKEV2_STATE_AUTH_FAILED) + { + ikev2_set_state (sa, IKEV2_STATE_DELETED); + goto done; + } + /* received unsupported critical payload */ + else if (sa->unsupported_cp) + { + u8 *data = vec_new (u8, 1); + + data[0] = sa->unsupported_cp; + ikev2_payload_add_notify (chain, + IKEV2_NOTIFY_MSG_UNSUPPORTED_CRITICAL_PAYLOAD, + data); + vec_free (data); + sa->unsupported_cp = 0; + } + /* else send empty response */ + } + else if (ike->exchange == IKEV2_EXCHANGE_CREATE_CHILD_SA) + { + if (sa->is_initiator) + { + + ikev2_sa_proposal_t *proposals = (ikev2_sa_proposal_t *) user; + ikev2_notify_t notify; + u8 *data = vec_new (u8, 4); + clib_memset (¬ify, 0, sizeof (notify)); + notify.protocol_id = IKEV2_PROTOCOL_ESP; + notify.spi = sa->childs[0].i_proposals->spi; + *(u32 *) data = clib_host_to_net_u32 (notify.spi); + + ikev2_payload_add_sa (chain, proposals); + ikev2_payload_add_nonce (chain, sa->i_nonce); + ikev2_payload_add_ts (chain, sa->childs[0].tsi, IKEV2_PAYLOAD_TSI); + ikev2_payload_add_ts (chain, sa->childs[0].tsr, IKEV2_PAYLOAD_TSR); + ikev2_payload_add_notify_2 (chain, IKEV2_NOTIFY_MSG_REKEY_SA, data, + ¬ify); + + vec_free (data); + } + else + { + if (sa->rekey) + { + ikev2_payload_add_sa (chain, sa->rekey[0].r_proposal); + ikev2_payload_add_nonce (chain, sa->r_nonce); + ikev2_payload_add_ts (chain, sa->rekey[0].tsi, + IKEV2_PAYLOAD_TSI); + ikev2_payload_add_ts (chain, sa->rekey[0].tsr, + IKEV2_PAYLOAD_TSR); + vec_del1 (sa->rekey, 0); + } + else if (sa->unsupported_cp) + { + u8 *data = vec_new (u8, 1); + + data[0] = sa->unsupported_cp; + ikev2_payload_add_notify (chain, + IKEV2_NOTIFY_MSG_UNSUPPORTED_CRITICAL_PAYLOAD, + data); + vec_free (data); + sa->unsupported_cp = 0; + } + else + { + ikev2_payload_add_notify (chain, + IKEV2_NOTIFY_MSG_NO_ADDITIONAL_SAS, + 0); + } + } + } + + /* IKEv2 header */ + ike->version = IKE_VERSION_2; + ike->nextpayload = IKEV2_PAYLOAD_SK; + tlen = sizeof (*ike); + if (sa->is_initiator) + { + ike->flags = IKEV2_HDR_FLAG_INITIATOR; + sa->last_init_msg_id = clib_net_to_host_u32 (ike->msgid); + } + else + { + ike->flags = IKEV2_HDR_FLAG_RESPONSE; + } + + + if (ike->exchange == IKEV2_EXCHANGE_SA_INIT) + { + tlen += vec_len (chain->data); + ike->nextpayload = chain->first_payload_type; + ike->length = clib_host_to_net_u32 (tlen); + clib_memcpy_fast (ike->payload, chain->data, vec_len (chain->data)); + + /* store whole IKE payload - needed for PSK auth */ + vec_free (sa->last_sa_init_res_packet_data); + vec_add (sa->last_sa_init_res_packet_data, ike, tlen); + } + else + { + + ikev2_payload_chain_add_padding (chain, tr_encr->block_size); + + /* SK payload */ + plen = sizeof (*ph); + ph = (ike_payload_header_t *) & ike->payload[0]; + ph->nextpayload = chain->first_payload_type; + ph->flags = 0; + int enc_len = ikev2_encrypt_data (sa, chain->data, ph->payload); + plen += enc_len; + + /* add space for hmac */ + plen += tr_integ->key_trunc; + tlen += plen; + + /* payload and total length */ + ph->length = clib_host_to_net_u16 (plen); + ike->length = clib_host_to_net_u32 (tlen); + + /* calc integrity data for whole packet except hash itself */ + integ = + ikev2_calc_integr (tr_integ, sa->is_initiator ? sa->sk_ai : sa->sk_ar, + (u8 *) ike, tlen - tr_integ->key_trunc); + + clib_memcpy_fast (ike->payload + tlen - tr_integ->key_trunc - + sizeof (*ike), integ, tr_integ->key_trunc); + + /* store whole IKE payload - needed for retransmit */ + vec_free (sa->last_res_packet_data); + vec_add (sa->last_res_packet_data, ike, tlen); + } + +done: + ikev2_payload_destroy_chain (chain); + vec_free (integ); + return tlen; +} + +static int +ikev2_retransmit_sa_init (ike_header_t * ike, + ip4_address_t iaddr, ip4_address_t raddr) +{ + ikev2_main_t *km = &ikev2_main; + ikev2_sa_t *sa; + u32 thread_index = vlib_get_thread_index (); + + /* *INDENT-OFF* */ + pool_foreach (sa, km->per_thread_data[thread_index].sas, ({ + if (sa->ispi == clib_net_to_host_u64(ike->ispi) && + sa->iaddr.as_u32 == iaddr.as_u32 && + sa->raddr.as_u32 == raddr.as_u32) + { + int p = 0; + u32 len = clib_net_to_host_u32(ike->length); + u8 payload = ike->nextpayload; + + while (p < len && payload!= IKEV2_PAYLOAD_NONE) { + ike_payload_header_t * ikep = (ike_payload_header_t *) &ike->payload[p]; + u32 plen = clib_net_to_host_u16(ikep->length); + + if (plen < sizeof(ike_payload_header_t)) + return -1; + + if (payload == IKEV2_PAYLOAD_NONCE) + { + if (!memcmp(sa->i_nonce, ikep->payload, plen - sizeof(*ikep))) + { + /* req is retransmit */ + if (sa->state == IKEV2_STATE_SA_INIT) + { + ike_header_t * tmp; + tmp = (ike_header_t*)sa->last_sa_init_res_packet_data; + ike->ispi = tmp->ispi; + ike->rspi = tmp->rspi; + ike->nextpayload = tmp->nextpayload; + ike->version = tmp->version; + ike->exchange = tmp->exchange; + ike->flags = tmp->flags; + ike->msgid = tmp->msgid; + ike->length = tmp->length; + clib_memcpy_fast(ike->payload, tmp->payload, + clib_net_to_host_u32(tmp->length) - sizeof(*ike)); + clib_warning("IKE_SA_INIT retransmit from %U to %U", + format_ip4_address, &raddr, + format_ip4_address, &iaddr); + return 1; + } + /* else ignore req */ + else + { + clib_warning("IKE_SA_INIT ignore from %U to %U", + format_ip4_address, &raddr, + format_ip4_address, &iaddr); + return -1; + } + } + } + payload = ikep->nextpayload; + p+=plen; + } + } + })); + /* *INDENT-ON* */ + + /* req is not retransmit */ + return 0; +} + +static int +ikev2_retransmit_resp (ikev2_sa_t * sa, ike_header_t * ike) +{ + u32 msg_id = clib_net_to_host_u32 (ike->msgid); + + /* new req */ + if (msg_id > sa->last_msg_id) + { + sa->last_msg_id = msg_id; + return 0; + } + /* retransmitted req */ + else if (msg_id == sa->last_msg_id) + { + ike_header_t *tmp; + tmp = (ike_header_t *) sa->last_res_packet_data; + ike->ispi = tmp->ispi; + ike->rspi = tmp->rspi; + ike->nextpayload = tmp->nextpayload; + ike->version = tmp->version; + ike->exchange = tmp->exchange; + ike->flags = tmp->flags; + ike->msgid = tmp->msgid; + ike->length = tmp->length; + clib_memcpy_fast (ike->payload, tmp->payload, + clib_net_to_host_u32 (tmp->length) - sizeof (*ike)); + clib_warning ("IKE msgid %u retransmit from %U to %U", + msg_id, + format_ip4_address, &sa->raddr, + format_ip4_address, &sa->iaddr); + return 1; + } + /* old req ignore */ + else + { + clib_warning ("IKE msgid %u req ignore from %U to %U", + msg_id, + format_ip4_address, &sa->raddr, + format_ip4_address, &sa->iaddr); + return -1; + } +} + + +static uword +ikev2_node_fn (vlib_main_t * vm, + vlib_node_runtime_t * node, vlib_frame_t * frame) +{ + u32 n_left_from, *from, *to_next; + ikev2_next_t next_index; + ikev2_main_t *km = &ikev2_main; + u32 thread_index = vlib_get_thread_index (); + + from = vlib_frame_vector_args (frame); + n_left_from = frame->n_vectors; + next_index = node->cached_next_index; + + while (n_left_from > 0) + { + u32 n_left_to_next; + + vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); + + while (n_left_from > 0 && n_left_to_next > 0) + { + u32 bi0; + vlib_buffer_t *b0; + u32 next0 = IKEV2_NEXT_ERROR_DROP; + u32 sw_if_index0; + ip4_header_t *ip40; + udp_header_t *udp0; + ike_header_t *ike0; + ikev2_sa_t *sa0 = 0; + ikev2_sa_t sa; /* temporary store for SA */ + int len = 0; + int r; + + /* speculatively enqueue b0 to the current next frame */ + bi0 = from[0]; + to_next[0] = bi0; + from += 1; + to_next += 1; + n_left_from -= 1; + n_left_to_next -= 1; + + b0 = vlib_get_buffer (vm, bi0); + ike0 = vlib_buffer_get_current (b0); + vlib_buffer_advance (b0, -sizeof (*udp0)); + udp0 = vlib_buffer_get_current (b0); + vlib_buffer_advance (b0, -sizeof (*ip40)); + ip40 = vlib_buffer_get_current (b0); + + if (ike0->version != IKE_VERSION_2) + { + vlib_node_increment_counter (vm, ikev2_node.index, + IKEV2_ERROR_NOT_IKEV2, 1); + goto dispatch0; + } + + if (ike0->exchange == IKEV2_EXCHANGE_SA_INIT) + { + sa0 = &sa; + clib_memset (sa0, 0, sizeof (*sa0)); + + if (ike0->flags & IKEV2_HDR_FLAG_INITIATOR) + { + if (ike0->rspi == 0) + { + sa0->raddr.as_u32 = ip40->dst_address.as_u32; + sa0->iaddr.as_u32 = ip40->src_address.as_u32; + + r = ikev2_retransmit_sa_init (ike0, sa0->iaddr, + sa0->raddr); + if (r == 1) + { + vlib_node_increment_counter (vm, ikev2_node.index, + IKEV2_ERROR_IKE_SA_INIT_RETRANSMIT, + 1); + len = clib_net_to_host_u32 (ike0->length); + goto dispatch0; + } + else if (r == -1) + { + vlib_node_increment_counter (vm, ikev2_node.index, + IKEV2_ERROR_IKE_SA_INIT_IGNORE, + 1); + goto dispatch0; + } + + ikev2_process_sa_init_req (vm, sa0, ike0); + + if (sa0->state == IKEV2_STATE_SA_INIT) + { + ikev2_sa_free_proposal_vector (&sa0->r_proposals); + sa0->r_proposals = + ikev2_select_proposal (sa0->i_proposals, + IKEV2_PROTOCOL_IKE); + ikev2_generate_sa_init_data (sa0); + } + + if (sa0->state == IKEV2_STATE_SA_INIT + || sa0->state == IKEV2_STATE_NOTIFY_AND_DELETE) + { + len = ikev2_generate_message (sa0, ike0, 0); + } + + if (sa0->state == IKEV2_STATE_SA_INIT) + { + /* add SA to the pool */ + pool_get (km->per_thread_data[thread_index].sas, + sa0); + clib_memcpy_fast (sa0, &sa, sizeof (*sa0)); + hash_set (km-> + per_thread_data[thread_index].sa_by_rspi, + sa0->rspi, + sa0 - + km->per_thread_data[thread_index].sas); + } + else + { + ikev2_sa_free_all_vec (sa0); + } + } + } + else //received sa_init without initiator flag + { + ikev2_process_sa_init_resp (vm, sa0, ike0); + + if (sa0->state == IKEV2_STATE_SA_INIT) + { + ike0->exchange = IKEV2_EXCHANGE_IKE_AUTH; + uword *p = hash_get (km->sa_by_ispi, ike0->ispi); + if (p) + { + ikev2_sa_t *sai = + pool_elt_at_index (km->sais, p[0]); + + ikev2_complete_sa_data (sa0, sai); + ikev2_calc_keys (sa0); + ikev2_sa_auth_init (sa0); + len = ikev2_generate_message (sa0, ike0, 0); + } + } + + if (sa0->state == IKEV2_STATE_SA_INIT) + { + /* add SA to the pool */ + pool_get (km->per_thread_data[thread_index].sas, sa0); + clib_memcpy_fast (sa0, &sa, sizeof (*sa0)); + hash_set (km->per_thread_data[thread_index].sa_by_rspi, + sa0->rspi, + sa0 - km->per_thread_data[thread_index].sas); + } + else + { + ikev2_sa_free_all_vec (sa0); + } + } + } + else if (ike0->exchange == IKEV2_EXCHANGE_IKE_AUTH) + { + uword *p; + p = hash_get (km->per_thread_data[thread_index].sa_by_rspi, + clib_net_to_host_u64 (ike0->rspi)); + if (p) + { + sa0 = + pool_elt_at_index (km->per_thread_data[thread_index].sas, + p[0]); + + r = ikev2_retransmit_resp (sa0, ike0); + if (r == 1) + { + vlib_node_increment_counter (vm, ikev2_node.index, + IKEV2_ERROR_IKE_REQ_RETRANSMIT, + 1); + len = clib_net_to_host_u32 (ike0->length); + goto dispatch0; + } + else if (r == -1) + { + vlib_node_increment_counter (vm, ikev2_node.index, + IKEV2_ERROR_IKE_REQ_IGNORE, + 1); + goto dispatch0; + } + + ikev2_process_auth_req (vm, sa0, ike0); + ikev2_sa_auth (sa0); + if (sa0->state == IKEV2_STATE_AUTHENTICATED) + { + ikev2_initial_contact_cleanup (sa0); + ikev2_sa_match_ts (sa0); + if (sa0->state != IKEV2_STATE_TS_UNACCEPTABLE) + ikev2_create_tunnel_interface (km->vnet_main, sa0, + &sa0->childs[0]); + } + + if (sa0->is_initiator) + { + uword *p = hash_get (km->sa_by_ispi, ike0->ispi); + if (p) + { + ikev2_sa_t *sai = + pool_elt_at_index (km->sais, p[0]); + hash_unset (km->sa_by_ispi, sai->ispi); + ikev2_sa_free_all_vec (sai); + pool_put (km->sais, sai); + } + } + else + { + len = ikev2_generate_message (sa0, ike0, 0); + } + } + } + else if (ike0->exchange == IKEV2_EXCHANGE_INFORMATIONAL) + { + uword *p; + p = hash_get (km->per_thread_data[thread_index].sa_by_rspi, + clib_net_to_host_u64 (ike0->rspi)); + if (p) + { + sa0 = + pool_elt_at_index (km->per_thread_data[thread_index].sas, + p[0]); + + r = ikev2_retransmit_resp (sa0, ike0); + if (r == 1) + { + vlib_node_increment_counter (vm, ikev2_node.index, + IKEV2_ERROR_IKE_REQ_RETRANSMIT, + 1); + len = clib_net_to_host_u32 (ike0->length); + goto dispatch0; + } + else if (r == -1) + { + vlib_node_increment_counter (vm, ikev2_node.index, + IKEV2_ERROR_IKE_REQ_IGNORE, + 1); + goto dispatch0; + } + + ikev2_process_informational_req (vm, sa0, ike0); + if (sa0->del) + { + if (sa0->del[0].protocol_id != IKEV2_PROTOCOL_IKE) + { + ikev2_delete_t *d, *tmp, *resp = 0; + vec_foreach (d, sa0->del) + { + ikev2_child_sa_t *ch_sa; + ch_sa = ikev2_sa_get_child (sa0, d->spi, + d->protocol_id, + !sa0->is_initiator); + if (ch_sa) + { + ikev2_delete_tunnel_interface (km->vnet_main, + sa0, ch_sa); + if (!sa0->is_initiator) + { + vec_add2 (resp, tmp, 1); + tmp->protocol_id = d->protocol_id; + tmp->spi = ch_sa->r_proposals[0].spi; + } + ikev2_sa_del_child_sa (sa0, ch_sa); + } + } + if (!sa0->is_initiator) + { + vec_free (sa0->del); + sa0->del = resp; + } + } + } + if (!sa0->is_initiator) + { + len = ikev2_generate_message (sa0, ike0, 0); + } + } + } + else if (ike0->exchange == IKEV2_EXCHANGE_CREATE_CHILD_SA) + { + uword *p; + p = hash_get (km->per_thread_data[thread_index].sa_by_rspi, + clib_net_to_host_u64 (ike0->rspi)); + if (p) + { + sa0 = + pool_elt_at_index (km->per_thread_data[thread_index].sas, + p[0]); + + r = ikev2_retransmit_resp (sa0, ike0); + if (r == 1) + { + vlib_node_increment_counter (vm, ikev2_node.index, + IKEV2_ERROR_IKE_REQ_RETRANSMIT, + 1); + len = clib_net_to_host_u32 (ike0->length); + goto dispatch0; + } + else if (r == -1) + { + vlib_node_increment_counter (vm, ikev2_node.index, + IKEV2_ERROR_IKE_REQ_IGNORE, + 1); + goto dispatch0; + } + + ikev2_process_create_child_sa_req (vm, sa0, ike0); + if (sa0->rekey) + { + if (sa0->rekey[0].protocol_id != IKEV2_PROTOCOL_IKE) + { + ikev2_child_sa_t *child; + vec_add2 (sa0->childs, child, 1); + child->r_proposals = sa0->rekey[0].r_proposal; + child->i_proposals = sa0->rekey[0].i_proposal; + child->tsi = sa0->rekey[0].tsi; + child->tsr = sa0->rekey[0].tsr; + ikev2_create_tunnel_interface (km->vnet_main, sa0, + child); + } + if (sa0->is_initiator) + { + vec_del1 (sa0->rekey, 0); + } + else + { + len = ikev2_generate_message (sa0, ike0, 0); + } + } + } + } + else + { + clib_warning ("IKEv2 exchange %u packet received from %U to %U", + ike0->exchange, + format_ip4_address, ip40->src_address.as_u8, + format_ip4_address, ip40->dst_address.as_u8); + } + + dispatch0: + /* if we are sending packet back, rewrite headers */ + if (len) + { + next0 = IKEV2_NEXT_IP4_LOOKUP; + if (sa0->is_initiator) + { + ip40->dst_address.as_u32 = sa0->raddr.as_u32; + ip40->src_address.as_u32 = sa0->iaddr.as_u32; + } + else + { + ip40->dst_address.as_u32 = sa0->iaddr.as_u32; + ip40->src_address.as_u32 = sa0->raddr.as_u32; + } + udp0->length = + clib_host_to_net_u16 (len + sizeof (udp_header_t)); + udp0->checksum = 0; + b0->current_length = + len + sizeof (ip4_header_t) + sizeof (udp_header_t); + ip40->length = clib_host_to_net_u16 (b0->current_length); + ip40->checksum = ip4_header_checksum (ip40); + } + /* delete sa */ + if (sa0 && (sa0->state == IKEV2_STATE_DELETED || + sa0->state == IKEV2_STATE_NOTIFY_AND_DELETE)) + { + ikev2_child_sa_t *c; + + vec_foreach (c, sa0->childs) + ikev2_delete_tunnel_interface (km->vnet_main, sa0, c); + + ikev2_delete_sa (sa0); + } + sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; + + if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) + && (b0->flags & VLIB_BUFFER_IS_TRACED))) + { + ikev2_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t)); + t->sw_if_index = sw_if_index0; + t->next_index = next0; + } + + vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, + n_left_to_next, bi0, next0); + } + + vlib_put_next_frame (vm, node, next_index, n_left_to_next); + } + + vlib_node_increment_counter (vm, ikev2_node.index, + IKEV2_ERROR_PROCESSED, frame->n_vectors); + return frame->n_vectors; +} + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (ikev2_node,static) = { + .function = ikev2_node_fn, + .name = "ikev2", + .vector_size = sizeof (u32), + .format_trace = format_ikev2_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + + .n_errors = ARRAY_LEN(ikev2_error_strings), + .error_strings = ikev2_error_strings, + + .n_next_nodes = IKEV2_N_NEXT, + + .next_nodes = { + [IKEV2_NEXT_IP4_LOOKUP] = "ip4-lookup", + [IKEV2_NEXT_ERROR_DROP] = "error-drop", + }, +}; +/* *INDENT-ON* */ + +// set ikev2 proposals when vpp is used as initiator +static clib_error_t * +ikev2_set_initiator_proposals (vlib_main_t * vm, ikev2_sa_t * sa, + ikev2_transforms_set * ts, + ikev2_sa_proposal_t ** proposals, int is_ike) +{ + clib_error_t *r; + ikev2_main_t *km = &ikev2_main; + ikev2_sa_proposal_t *proposal; + vec_add2 (*proposals, proposal, 1); + ikev2_sa_transform_t *td; + int error; + + /* Encryption */ + error = 1; + vec_foreach (td, km->supported_transforms) + { + if (td->type == IKEV2_TRANSFORM_TYPE_ENCR + && td->encr_type == ts->crypto_alg + && td->key_len == ts->crypto_key_size / 8) + { + u16 attr[2]; + attr[0] = clib_host_to_net_u16 (14 | (1 << 15)); + attr[1] = clib_host_to_net_u16 (td->key_len << 3); + vec_add (td->attrs, (u8 *) attr, 4); + vec_add1 (proposal->transforms, *td); + td->attrs = 0; + + error = 0; + break; + } + } + if (error) + { + r = clib_error_return (0, "Unsupported algorithm"); + return r; + } + + /* Integrity */ + error = 1; + vec_foreach (td, km->supported_transforms) + { + if (td->type == IKEV2_TRANSFORM_TYPE_INTEG + && td->integ_type == ts->integ_alg) + { + vec_add1 (proposal->transforms, *td); + error = 0; + break; + } + } + if (error) + { + clib_warning + ("Didn't find any supported algorithm for IKEV2_TRANSFORM_TYPE_INTEG"); + r = clib_error_return (0, "Unsupported algorithm"); + return r; + } + + /* PRF */ + if (is_ike) + { + error = 1; + vec_foreach (td, km->supported_transforms) + { + if (td->type == IKEV2_TRANSFORM_TYPE_PRF + && td->prf_type == IKEV2_TRANSFORM_PRF_TYPE_PRF_HMAC_SHA2_256) + { + vec_add1 (proposal->transforms, *td); + error = 0; + break; + } + } + if (error) + { + r = clib_error_return (0, "Unsupported algorithm"); + return r; + } + } + + /* DH */ + error = 1; + vec_foreach (td, km->supported_transforms) + { + if (td->type == IKEV2_TRANSFORM_TYPE_DH && td->dh_type == ts->dh_type) + { + vec_add1 (proposal->transforms, *td); + if (is_ike) + { + sa->dh_group = td->dh_type; + } + error = 0; + break; + } + } + if (error) + { + r = clib_error_return (0, "Unsupported algorithm"); + return r; + } + + if (!is_ike) + { + error = 1; + vec_foreach (td, km->supported_transforms) + { + if (td->type == IKEV2_TRANSFORM_TYPE_ESN) + { + vec_add1 (proposal->transforms, *td); + error = 0; + break; + } + } + if (error) + { + r = clib_error_return (0, "Unsupported algorithm"); + return r; + } + } + + + return 0; +} + +static ikev2_profile_t * +ikev2_profile_index_by_name (u8 * name) +{ + ikev2_main_t *km = &ikev2_main; + uword *p; + + p = mhash_get (&km->profile_index_by_name, name); + if (!p) + return 0; + + return pool_elt_at_index (km->profiles, p[0]); +} + + +static void +ikev2_send_ike (vlib_main_t * vm, ip4_address_t * src, ip4_address_t * dst, + u32 bi0, u32 len) +{ + ip4_header_t *ip40; + udp_header_t *udp0; + vlib_buffer_t *b0; + vlib_frame_t *f; + u32 *to_next; + + b0 = vlib_get_buffer (vm, bi0); + vlib_buffer_advance (b0, -sizeof (udp_header_t)); + udp0 = vlib_buffer_get_current (b0); + vlib_buffer_advance (b0, -sizeof (ip4_header_t)); + ip40 = vlib_buffer_get_current (b0); + + + ip40->ip_version_and_header_length = 0x45; + ip40->tos = 0; + ip40->fragment_id = 0; + ip40->flags_and_fragment_offset = 0; + ip40->ttl = 0xff; + ip40->protocol = IP_PROTOCOL_UDP; + ip40->dst_address.as_u32 = dst->as_u32; + ip40->src_address.as_u32 = src->as_u32; + udp0->dst_port = clib_host_to_net_u16 (500); + udp0->src_port = clib_host_to_net_u16 (500); + udp0->length = clib_host_to_net_u16 (len + sizeof (udp_header_t)); + udp0->checksum = 0; + b0->current_length = len + sizeof (ip4_header_t) + sizeof (udp_header_t); + ip40->length = clib_host_to_net_u16 (b0->current_length); + ip40->checksum = ip4_header_checksum (ip40); + + + /* send the request */ + f = vlib_get_frame_to_node (vm, ip4_lookup_node.index); + to_next = vlib_frame_vector_args (f); + to_next[0] = bi0; + f->n_vectors = 1; + vlib_put_frame_to_node (vm, ip4_lookup_node.index, f); + +} + +static u32 +ikev2_get_new_ike_header_buff (vlib_main_t * vm, ike_header_t ** ike) +{ + u32 bi0; + if (vlib_buffer_alloc (vm, &bi0, 1) != 1) + { + *ike = 0; + return 0; + } + vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0); + *ike = vlib_buffer_get_current (b0); + return bi0; +} + +clib_error_t * +ikev2_set_local_key (vlib_main_t * vm, u8 * file) +{ + ikev2_main_t *km = &ikev2_main; + + km->pkey = ikev2_load_key_file (file); + if (km->pkey == NULL) + return clib_error_return (0, "load key '%s' failed", file); + + return 0; +} + +clib_error_t * +ikev2_add_del_profile (vlib_main_t * vm, u8 * name, int is_add) +{ + ikev2_main_t *km = &ikev2_main; + ikev2_profile_t *p; + + if (is_add) + { + if (ikev2_profile_index_by_name (name)) + return clib_error_return (0, "policy %v already exists", name); + + pool_get (km->profiles, p); + clib_memset (p, 0, sizeof (*p)); + p->name = vec_dup (name); + p->responder.sw_if_index = ~0; + uword index = p - km->profiles; + mhash_set_mem (&km->profile_index_by_name, name, &index, 0); + } + else + { + p = ikev2_profile_index_by_name (name); + if (!p) + return clib_error_return (0, "policy %v does not exists", name); + + vec_free (p->name); + pool_put (km->profiles, p); + mhash_unset (&km->profile_index_by_name, name, 0); + } + return 0; +} + +clib_error_t * +ikev2_set_profile_auth (vlib_main_t * vm, u8 * name, u8 auth_method, + u8 * auth_data, u8 data_hex_format) +{ + ikev2_profile_t *p; + clib_error_t *r; + + p = ikev2_profile_index_by_name (name); + + if (!p) + { + r = clib_error_return (0, "unknown profile %v", name); + return r; + } + vec_free (p->auth.data); + p->auth.method = auth_method; + p->auth.data = vec_dup (auth_data); + p->auth.hex = data_hex_format; + + if (auth_method == IKEV2_AUTH_METHOD_RSA_SIG) + { + vec_add1 (p->auth.data, 0); + if (p->auth.key) + EVP_PKEY_free (p->auth.key); + p->auth.key = ikev2_load_cert_file (auth_data); + if (p->auth.key == NULL) + return clib_error_return (0, "load cert '%s' failed", auth_data); + } + + return 0; +} + +clib_error_t * +ikev2_set_profile_id (vlib_main_t * vm, u8 * name, u8 id_type, u8 * data, + int is_local) +{ + ikev2_profile_t *p; + clib_error_t *r; + + if (id_type > IKEV2_ID_TYPE_ID_RFC822_ADDR + && id_type < IKEV2_ID_TYPE_ID_KEY_ID) + { + r = clib_error_return (0, "unsupported identity type %U", + format_ikev2_id_type, id_type); + return r; + } + + p = ikev2_profile_index_by_name (name); + + if (!p) + { + r = clib_error_return (0, "unknown profile %v", name); + return r; + } + + if (is_local) + { + vec_free (p->loc_id.data); + p->loc_id.type = id_type; + p->loc_id.data = vec_dup (data); + } + else + { + vec_free (p->rem_id.data); + p->rem_id.type = id_type; + p->rem_id.data = vec_dup (data); + } + + return 0; +} + +clib_error_t * +ikev2_set_profile_ts (vlib_main_t * vm, u8 * name, u8 protocol_id, + u16 start_port, u16 end_port, ip4_address_t start_addr, + ip4_address_t end_addr, int is_local) +{ + ikev2_profile_t *p; + clib_error_t *r; + + p = ikev2_profile_index_by_name (name); + + if (!p) + { + r = clib_error_return (0, "unknown profile %v", name); + return r; + } + + if (is_local) + { + p->loc_ts.start_addr.as_u32 = start_addr.as_u32; + p->loc_ts.end_addr.as_u32 = end_addr.as_u32; + p->loc_ts.start_port = start_port; + p->loc_ts.end_port = end_port; + p->loc_ts.protocol_id = protocol_id; + p->loc_ts.ts_type = 7; + } + else + { + p->rem_ts.start_addr.as_u32 = start_addr.as_u32; + p->rem_ts.end_addr.as_u32 = end_addr.as_u32; + p->rem_ts.start_port = start_port; + p->rem_ts.end_port = end_port; + p->rem_ts.protocol_id = protocol_id; + p->rem_ts.ts_type = 7; + } + + return 0; +} + + +clib_error_t * +ikev2_set_profile_responder (vlib_main_t * vm, u8 * name, + u32 sw_if_index, ip4_address_t ip4) +{ + ikev2_profile_t *p; + clib_error_t *r; + + p = ikev2_profile_index_by_name (name); + + if (!p) + { + r = clib_error_return (0, "unknown profile %v", name); + return r; + } + + p->responder.sw_if_index = sw_if_index; + p->responder.ip4 = ip4; + + return 0; +} + +clib_error_t * +ikev2_set_profile_ike_transforms (vlib_main_t * vm, u8 * name, + ikev2_transform_encr_type_t crypto_alg, + ikev2_transform_integ_type_t integ_alg, + ikev2_transform_dh_type_t dh_type, + u32 crypto_key_size) +{ + ikev2_profile_t *p; + clib_error_t *r; + + p = ikev2_profile_index_by_name (name); + + if (!p) + { + r = clib_error_return (0, "unknown profile %v", name); + return r; + } + + p->ike_ts.crypto_alg = crypto_alg; + p->ike_ts.integ_alg = integ_alg; + p->ike_ts.dh_type = dh_type; + p->ike_ts.crypto_key_size = crypto_key_size; + return 0; +} + +clib_error_t * +ikev2_set_profile_esp_transforms (vlib_main_t * vm, u8 * name, + ikev2_transform_encr_type_t crypto_alg, + ikev2_transform_integ_type_t integ_alg, + ikev2_transform_dh_type_t dh_type, + u32 crypto_key_size) +{ + ikev2_profile_t *p; + clib_error_t *r; + + p = ikev2_profile_index_by_name (name); + + if (!p) + { + r = clib_error_return (0, "unknown profile %v", name); + return r; + } + + p->esp_ts.crypto_alg = crypto_alg; + p->esp_ts.integ_alg = integ_alg; + p->esp_ts.dh_type = dh_type; + p->esp_ts.crypto_key_size = crypto_key_size; + return 0; +} + +clib_error_t * +ikev2_set_profile_sa_lifetime (vlib_main_t * vm, u8 * name, + u64 lifetime, u32 jitter, u32 handover, + u64 maxdata) +{ + ikev2_profile_t *p; + clib_error_t *r; + + p = ikev2_profile_index_by_name (name); + + if (!p) + { + r = clib_error_return (0, "unknown profile %v", name); + return r; + } + + p->lifetime = lifetime; + p->lifetime_jitter = jitter; + p->handover = handover; + p->lifetime_maxdata = maxdata; + return 0; +} + +clib_error_t * +ikev2_initiate_sa_init (vlib_main_t * vm, u8 * name) +{ + ikev2_profile_t *p; + clib_error_t *r; + ip4_main_t *im = &ip4_main; + ikev2_main_t *km = &ikev2_main; + + p = ikev2_profile_index_by_name (name); + + if (!p) + { + r = clib_error_return (0, "unknown profile %v", name); + return r; + } + + if (p->responder.sw_if_index == ~0 || p->responder.ip4.data_u32 == 0) + { + r = clib_error_return (0, "responder not set for profile %v", name); + return r; + } + + + /* Create the Initiator Request */ + { + ike_header_t *ike0; + u32 bi0 = 0; + ip_lookup_main_t *lm = &im->lookup_main; + u32 if_add_index0; + int len = sizeof (ike_header_t); + + /* Get own iface IP */ + if_add_index0 = + lm->if_address_pool_index_by_sw_if_index[p->responder.sw_if_index]; + ip_interface_address_t *if_add = + pool_elt_at_index (lm->if_address_pool, if_add_index0); + ip4_address_t *if_ip = ip_interface_address_get_address (lm, if_add); + + bi0 = ikev2_get_new_ike_header_buff (vm, &ike0); + + /* Prepare the SA and the IKE payload */ + ikev2_sa_t sa; + clib_memset (&sa, 0, sizeof (ikev2_sa_t)); + ikev2_payload_chain_t *chain = 0; + ikev2_payload_new_chain (chain); + + /* Build the IKE proposal payload */ + ikev2_sa_proposal_t *proposals = 0; + ikev2_set_initiator_proposals (vm, &sa, &p->ike_ts, &proposals, 1); + proposals[0].proposal_num = 1; + proposals[0].protocol_id = IKEV2_PROTOCOL_IKE; + + /* Add and then cleanup proposal data */ + ikev2_payload_add_sa (chain, proposals); + ikev2_sa_free_proposal_vector (&proposals); + + sa.is_initiator = 1; + sa.profile = p; + sa.state = IKEV2_STATE_SA_INIT; + ikev2_generate_sa_init_data (&sa); + ikev2_payload_add_ke (chain, sa.dh_group, sa.i_dh_data); + ikev2_payload_add_nonce (chain, sa.i_nonce); + + /* Build the child SA proposal */ + vec_resize (sa.childs, 1); + ikev2_set_initiator_proposals (vm, &sa, &p->esp_ts, + &sa.childs[0].i_proposals, 0); + sa.childs[0].i_proposals[0].proposal_num = 1; + sa.childs[0].i_proposals[0].protocol_id = IKEV2_PROTOCOL_ESP; + RAND_bytes ((u8 *) & sa.childs[0].i_proposals[0].spi, + sizeof (sa.childs[0].i_proposals[0].spi)); + + + + /* Add NAT detection notification messages (mandatory) */ + u8 nat_detection_source[8 + 8 + 4 + 2]; + u8 *nat_detection_sha1 = vec_new (u8, 20); + + u64 tmpspi = clib_host_to_net_u64 (sa.ispi); + clib_memcpy_fast (&nat_detection_source[0], &tmpspi, sizeof (tmpspi)); + tmpspi = clib_host_to_net_u64 (sa.rspi); + clib_memcpy_fast (&nat_detection_source[8], &tmpspi, sizeof (tmpspi)); + u16 tmpport = clib_host_to_net_u16 (500); + clib_memcpy_fast (&nat_detection_source[8 + 8 + 4], &tmpport, + sizeof (tmpport)); + u32 tmpip = clib_host_to_net_u32 (if_ip->as_u32); + clib_memcpy_fast (&nat_detection_source[8 + 8], &tmpip, sizeof (tmpip)); + SHA1 (nat_detection_source, sizeof (nat_detection_source), + nat_detection_sha1); + ikev2_payload_add_notify (chain, IKEV2_NOTIFY_MSG_NAT_DETECTION_SOURCE_IP, + nat_detection_sha1); + tmpip = clib_host_to_net_u32 (p->responder.ip4.as_u32); + clib_memcpy_fast (&nat_detection_source[8 + 8], &tmpip, sizeof (tmpip)); + SHA1 (nat_detection_source, sizeof (nat_detection_source), + nat_detection_sha1); + ikev2_payload_add_notify (chain, + IKEV2_NOTIFY_MSG_NAT_DETECTION_DESTINATION_IP, + nat_detection_sha1); + vec_free (nat_detection_sha1); + + u8 *sig_hash_algo = vec_new (u8, 8); + u64 tmpsig = clib_host_to_net_u64 (0x0001000200030004); + clib_memcpy_fast (sig_hash_algo, &tmpsig, sizeof (tmpsig)); + ikev2_payload_add_notify (chain, + IKEV2_NOTIFY_MSG_SIGNATURE_HASH_ALGORITHMS, + sig_hash_algo); + vec_free (sig_hash_algo); + + + /* Buffer update and boilerplate */ + len += vec_len (chain->data); + ike0->nextpayload = chain->first_payload_type; + ike0->length = clib_host_to_net_u32 (len); + clib_memcpy_fast (ike0->payload, chain->data, vec_len (chain->data)); + ikev2_payload_destroy_chain (chain); + + ike0->version = IKE_VERSION_2; + ike0->flags = IKEV2_HDR_FLAG_INITIATOR; + ike0->exchange = IKEV2_EXCHANGE_SA_INIT; + ike0->ispi = sa.ispi; + + /* store whole IKE payload - needed for PSK auth */ + vec_free (sa.last_sa_init_req_packet_data); + vec_add (sa.last_sa_init_req_packet_data, ike0, len); + + /* add data to the SA then add it to the pool */ + sa.iaddr.as_u32 = if_ip->as_u32; + sa.raddr.as_u32 = p->responder.ip4.as_u32; + sa.i_id.type = p->loc_id.type; + sa.i_id.data = vec_dup (p->loc_id.data); + sa.i_auth.method = p->auth.method; + sa.i_auth.hex = p->auth.hex; + sa.i_auth.data = vec_dup (p->auth.data); +#if OPENSSL_VERSION_NUMBER >= 0x10100000L + clib_memcpy_fast (sa.i_auth.key, p->auth.key, + EVP_PKEY_size (p->auth.key)); +#else + sa.i_auth.key = vec_dup (p->auth.key); +#endif + vec_add (sa.childs[0].tsi, &p->loc_ts, 1); + vec_add (sa.childs[0].tsr, &p->rem_ts, 1); + + /* add SA to the pool */ + ikev2_sa_t *sa0 = 0; + pool_get (km->sais, sa0); + clib_memcpy_fast (sa0, &sa, sizeof (*sa0)); + hash_set (km->sa_by_ispi, sa0->ispi, sa0 - km->sais); + + ikev2_send_ike (vm, if_ip, &p->responder.ip4, bi0, len); + + } + + return 0; +} + +static void +ikev2_delete_child_sa_internal (vlib_main_t * vm, ikev2_sa_t * sa, + ikev2_child_sa_t * csa) +{ + /* Create the Initiator notification for child SA removal */ + ikev2_main_t *km = &ikev2_main; + ike_header_t *ike0; + u32 bi0 = 0; + int len; + + bi0 = ikev2_get_new_ike_header_buff (vm, &ike0); + + + ike0->exchange = IKEV2_EXCHANGE_INFORMATIONAL; + ike0->ispi = clib_host_to_net_u64 (sa->ispi); + ike0->rspi = clib_host_to_net_u64 (sa->rspi); + vec_resize (sa->del, 1); + sa->del->protocol_id = IKEV2_PROTOCOL_ESP; + sa->del->spi = csa->i_proposals->spi; + ike0->msgid = clib_host_to_net_u32 (sa->last_init_msg_id + 1); + sa->last_init_msg_id = clib_net_to_host_u32 (ike0->msgid); + len = ikev2_generate_message (sa, ike0, 0); + + ikev2_send_ike (vm, &sa->iaddr, &sa->raddr, bi0, len); + + /* delete local child SA */ + ikev2_delete_tunnel_interface (km->vnet_main, sa, csa); + ikev2_sa_del_child_sa (sa, csa); +} + +clib_error_t * +ikev2_initiate_delete_child_sa (vlib_main_t * vm, u32 ispi) +{ + clib_error_t *r; + ikev2_main_t *km = &ikev2_main; + ikev2_main_per_thread_data_t *tkm; + ikev2_sa_t *fsa = 0; + ikev2_child_sa_t *fchild = 0; + + /* Search for the child SA */ + vec_foreach (tkm, km->per_thread_data) + { + ikev2_sa_t *sa; + if (fchild) + break; + /* *INDENT-OFF* */ + pool_foreach (sa, tkm->sas, ({ + fchild = ikev2_sa_get_child(sa, ispi, IKEV2_PROTOCOL_ESP, 1); + if (fchild) + { + fsa = sa; + break; + } + })); + /* *INDENT-ON* */ + } + + if (!fchild || !fsa) + { + r = clib_error_return (0, "Child SA not found"); + return r; + } + else + { + ikev2_delete_child_sa_internal (vm, fsa, fchild); + } + + return 0; +} + +clib_error_t * +ikev2_initiate_delete_ike_sa (vlib_main_t * vm, u64 ispi) +{ + clib_error_t *r; + ikev2_main_t *km = &ikev2_main; + ikev2_main_per_thread_data_t *tkm; + ikev2_sa_t *fsa = 0; + ikev2_main_per_thread_data_t *ftkm = 0; + + /* Search for the IKE SA */ + vec_foreach (tkm, km->per_thread_data) + { + ikev2_sa_t *sa; + if (fsa) + break; + /* *INDENT-OFF* */ + pool_foreach (sa, tkm->sas, ({ + if (sa->ispi == ispi) + { + fsa = sa; + ftkm = tkm; + break; + } + })); + /* *INDENT-ON* */ + } + + if (!fsa) + { + r = clib_error_return (0, "IKE SA not found"); + return r; + } + + + /* Create the Initiator notification for IKE SA removal */ + { + ike_header_t *ike0; + u32 bi0 = 0; + int len; + + bi0 = ikev2_get_new_ike_header_buff (vm, &ike0); + + + ike0->exchange = IKEV2_EXCHANGE_INFORMATIONAL; + ike0->ispi = clib_host_to_net_u64 (fsa->ispi); + ike0->rspi = clib_host_to_net_u64 (fsa->rspi); + vec_resize (fsa->del, 1); + fsa->del->protocol_id = IKEV2_PROTOCOL_IKE; + fsa->del->spi = ispi; + ike0->msgid = clib_host_to_net_u32 (fsa->last_init_msg_id + 1); + fsa->last_init_msg_id = clib_net_to_host_u32 (ike0->msgid); + len = ikev2_generate_message (fsa, ike0, 0); + + ikev2_send_ike (vm, &fsa->iaddr, &fsa->raddr, bi0, len); + } + + + /* delete local SA */ + ikev2_child_sa_t *c; + vec_foreach (c, fsa->childs) + { + ikev2_delete_tunnel_interface (km->vnet_main, fsa, c); + ikev2_sa_del_child_sa (fsa, c); + } + ikev2_sa_free_all_vec (fsa); + uword *p = hash_get (ftkm->sa_by_rspi, fsa->rspi); + if (p) + { + hash_unset (ftkm->sa_by_rspi, fsa->rspi); + pool_put (ftkm->sas, fsa); + } + + + return 0; +} + +static void +ikev2_rekey_child_sa_internal (vlib_main_t * vm, ikev2_sa_t * sa, + ikev2_child_sa_t * csa) +{ + /* Create the Initiator request for create child SA */ + ike_header_t *ike0; + u32 bi0 = 0; + int len; + + + bi0 = ikev2_get_new_ike_header_buff (vm, &ike0); + + + ike0->version = IKE_VERSION_2; + ike0->flags = IKEV2_HDR_FLAG_INITIATOR; + ike0->exchange = IKEV2_EXCHANGE_CREATE_CHILD_SA; + ike0->ispi = clib_host_to_net_u64 (sa->ispi); + ike0->rspi = clib_host_to_net_u64 (sa->rspi); + ike0->msgid = clib_host_to_net_u32 (sa->last_init_msg_id + 1); + sa->last_init_msg_id = clib_net_to_host_u32 (ike0->msgid); + + ikev2_rekey_t *rekey; + vec_add2 (sa->rekey, rekey, 1); + ikev2_sa_proposal_t *proposals = vec_dup (csa->i_proposals); + + /*need new ispi */ + RAND_bytes ((u8 *) & proposals[0].spi, sizeof (proposals[0].spi)); + rekey->spi = proposals[0].spi; + rekey->ispi = csa->i_proposals->spi; + len = ikev2_generate_message (sa, ike0, proposals); + ikev2_send_ike (vm, &sa->iaddr, &sa->raddr, bi0, len); + vec_free (proposals); +} + +clib_error_t * +ikev2_initiate_rekey_child_sa (vlib_main_t * vm, u32 ispi) +{ + clib_error_t *r; + ikev2_main_t *km = &ikev2_main; + ikev2_main_per_thread_data_t *tkm; + ikev2_sa_t *fsa = 0; + ikev2_child_sa_t *fchild = 0; + + /* Search for the child SA */ + vec_foreach (tkm, km->per_thread_data) + { + ikev2_sa_t *sa; + if (fchild) + break; + /* *INDENT-OFF* */ + pool_foreach (sa, tkm->sas, ({ + fchild = ikev2_sa_get_child(sa, ispi, IKEV2_PROTOCOL_ESP, 1); + if (fchild) + { + fsa = sa; + break; + } + })); + /* *INDENT-ON* */ + } + + if (!fchild || !fsa) + { + r = clib_error_return (0, "Child SA not found"); + return r; + } + else + { + ikev2_rekey_child_sa_internal (vm, fsa, fchild); + } + + return 0; +} + +clib_error_t * +ikev2_init (vlib_main_t * vm) +{ + ikev2_main_t *km = &ikev2_main; + clib_error_t *error; + vlib_thread_main_t *tm = vlib_get_thread_main (); + int thread_id; + + if ((error = vlib_call_init_function (vm, ipsec_init))) + return error; + + clib_memset (km, 0, sizeof (ikev2_main_t)); + km->vnet_main = vnet_get_main (); + km->vlib_main = vm; + + ikev2_crypto_init (km); + + mhash_init_vec_string (&km->profile_index_by_name, sizeof (uword)); + + vec_validate (km->per_thread_data, tm->n_vlib_mains - 1); + for (thread_id = 0; thread_id < tm->n_vlib_mains - 1; thread_id++) + { + km->per_thread_data[thread_id].sa_by_rspi = + hash_create (0, sizeof (uword)); + } + + km->sa_by_ispi = hash_create (0, sizeof (uword)); + + + if ((error = vlib_call_init_function (vm, ikev2_cli_init))) + return error; + + udp_register_dst_port (vm, 500, ikev2_node.index, 1); + + return 0; +} + +VLIB_INIT_FUNCTION (ikev2_init); + +static u8 +ikev2_mngr_process_child_sa (ikev2_sa_t * sa, ikev2_child_sa_t * csa) +{ + ikev2_main_t *km = &ikev2_main; + vlib_main_t *vm = km->vlib_main; + f64 now = vlib_time_now (vm); + u8 res = 0; + + if (sa->is_initiator && sa->profile && csa->time_to_expiration + && now > csa->time_to_expiration) + { + if (!csa->is_expired || csa->rekey_retries > 0) + { + ikev2_rekey_child_sa_internal (vm, sa, csa); + csa->time_to_expiration = now + sa->profile->handover; + csa->is_expired = 1; + if (csa->rekey_retries == 0) + { + csa->rekey_retries = 5; + } + else if (csa->rekey_retries > 0) + { + csa->rekey_retries--; + clib_warning ("Rekeying Child SA 0x%x, retries left %d", + csa->i_proposals->spi, csa->rekey_retries); + if (csa->rekey_retries == 0) + { + csa->rekey_retries = -1; + } + } + res |= 1; + } + else + { + csa->time_to_expiration = 0; + ikev2_delete_child_sa_internal (vm, sa, csa); + res |= 1; + } + } + + return res; +} + +static void +ikev2_mngr_process_ipsec_sa (ipsec_sa_t * ipsec_sa) +{ + ikev2_main_t *km = &ikev2_main; + vlib_main_t *vm = km->vlib_main; + ikev2_main_per_thread_data_t *tkm; + ikev2_sa_t *fsa = 0; + ikev2_child_sa_t *fchild = 0; + f64 now = vlib_time_now (vm); + vlib_counter_t counts; + + /* Search for the SA and child SA */ + vec_foreach (tkm, km->per_thread_data) + { + ikev2_sa_t *sa; + if (fchild) + break; + /* *INDENT-OFF* */ + pool_foreach (sa, tkm->sas, ({ + fchild = ikev2_sa_get_child(sa, ipsec_sa->spi, IKEV2_PROTOCOL_ESP, 1); + if (fchild) + { + fsa = sa; + break; + } + })); + /* *INDENT-ON* */ + } + vlib_get_combined_counter (&ipsec_sa_counters, + ipsec_sa->stat_index, &counts); + + if (fchild && fsa && fsa->profile && fsa->profile->lifetime_maxdata) + { + if (!fchild->is_expired + && counts.bytes > fsa->profile->lifetime_maxdata) + { + fchild->time_to_expiration = now; + } + } +} + +static vlib_node_registration_t ikev2_mngr_process_node; + +static uword +ikev2_mngr_process_fn (vlib_main_t * vm, vlib_node_runtime_t * rt, + vlib_frame_t * f) +{ + ikev2_main_t *km = &ikev2_main; + ipsec_main_t *im = &ipsec_main; + + while (1) + { + u8 req_sent = 0; + vlib_process_wait_for_event_or_clock (vm, 1); + vlib_process_get_events (vm, NULL); + + /* process ike child sas */ + ikev2_main_per_thread_data_t *tkm; + vec_foreach (tkm, km->per_thread_data) + { + ikev2_sa_t *sa; + /* *INDENT-OFF* */ + pool_foreach (sa, tkm->sas, ({ + ikev2_child_sa_t *c; + vec_foreach (c, sa->childs) + { + req_sent |= ikev2_mngr_process_child_sa(sa, c); + } + })); + /* *INDENT-ON* */ + } + + /* process ipsec sas */ + ipsec_sa_t *sa; + /* *INDENT-OFF* */ + pool_foreach (sa, im->sad, ({ + ikev2_mngr_process_ipsec_sa(sa); + })); + /* *INDENT-ON* */ + + if (req_sent) + { + vlib_process_wait_for_event_or_clock (vm, 5); + vlib_process_get_events (vm, NULL); + req_sent = 0; + } + + } + return 0; +} + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (ikev2_mngr_process_node, static) = { + .function = ikev2_mngr_process_fn, + .type = VLIB_NODE_TYPE_PROCESS, + .name = + "ikev2-manager-process", +}; + +VLIB_PLUGIN_REGISTER () = { + .version = VPP_BUILD_VER, + .description = "IKEv2", +}; +/* *INDENT-ON* */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/plugins/ikev2/ikev2.h b/src/plugins/ikev2/ikev2.h new file mode 100644 index 00000000000..55731bff975 --- /dev/null +++ b/src/plugins/ikev2/ikev2.h @@ -0,0 +1,435 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#ifndef __included_ikev2_h__ +#define __included_ikev2_h__ + +#include <vnet/vnet.h> +#include <vnet/ip/ip.h> + +#include <vppinfra/error.h> + +#define IKEV2_NONCE_SIZE 32 + +#define IKEV2_KEY_PAD "Key Pad for IKEv2" + +typedef u8 v8; + +/* *INDENT-OFF* */ +typedef CLIB_PACKED (struct { + u64 ispi; + u64 rspi; + u8 nextpayload; + u8 version; + u8 exchange; + u8 flags; + u32 msgid; u32 length; u8 payload[0]; +}) ike_header_t; +/* *INDENT-ON* */ + +/* *INDENT-OFF* */ +typedef CLIB_PACKED (struct + { + u8 nextpayload; + u8 flags; + u16 length; + u16 dh_group; + u8 reserved[2]; u8 payload[0];}) ike_ke_payload_header_t; +/* *INDENT-ON* */ + +/* *INDENT-OFF* */ +typedef CLIB_PACKED (struct { + u8 nextpayload; + u8 flags; + u16 length; u8 payload[0]; +}) ike_payload_header_t; +/* *INDENT-ON* */ + +/* *INDENT-OFF* */ +typedef CLIB_PACKED (struct { + u8 nextpayload; + u8 flags; + u16 length; + u8 auth_method; + u8 reserved[3]; + u8 payload[0]; +}) ike_auth_payload_header_t; +/* *INDENT-ON* */ + +/* *INDENT-OFF* */ +typedef CLIB_PACKED (struct { + u8 nextpayload; + u8 flags; + u16 length; + u8 id_type; + u8 reserved[3]; u8 payload[0]; +}) ike_id_payload_header_t; +/* *INDENT-ON* */ + +#define IKE_VERSION_2 0x20 + +#define IKEV2_EXCHANGE_SA_INIT 34 +#define IKEV2_EXCHANGE_IKE_AUTH 35 +#define IKEV2_EXCHANGE_CREATE_CHILD_SA 36 +#define IKEV2_EXCHANGE_INFORMATIONAL 37 + +#define IKEV2_HDR_FLAG_INITIATOR (1<<3) +#define IKEV2_HDR_FLAG_VERSION (1<<4) +#define IKEV2_HDR_FLAG_RESPONSE (1<<5) + +#define IKEV2_PAYLOAD_FLAG_CRITICAL (1<<7) + +#define IKEV2_PAYLOAD_NONE 0 +#define IKEV2_PAYLOAD_SA 33 +#define IKEV2_PAYLOAD_KE 34 +#define IKEV2_PAYLOAD_IDI 35 +#define IKEV2_PAYLOAD_IDR 36 +#define IKEV2_PAYLOAD_AUTH 39 +#define IKEV2_PAYLOAD_NONCE 40 +#define IKEV2_PAYLOAD_NOTIFY 41 +#define IKEV2_PAYLOAD_DELETE 42 +#define IKEV2_PAYLOAD_VENDOR 43 +#define IKEV2_PAYLOAD_TSI 44 +#define IKEV2_PAYLOAD_TSR 45 +#define IKEV2_PAYLOAD_SK 46 + +typedef enum +{ + IKEV2_PROTOCOL_IKE = 1, + IKEV2_PROTOCOL_AH = 2, + IKEV2_PROTOCOL_ESP = 3, +} ikev2_protocol_id_t; + +#define foreach_ikev2_notify_msg_type \ + _( 0, NONE) \ + _( 1, UNSUPPORTED_CRITICAL_PAYLOAD) \ + _( 4, INVALID_IKE_SPI) \ + _( 5, INVALID_MAJOR_VERSION) \ + _( 7, INVALID_SYNTAX) \ + _( 8, INVALID_MESSAGE_ID) \ + _( 11, INVALID_SPI) \ + _( 14, NO_PROPOSAL_CHOSEN) \ + _( 17, INVALID_KE_PAYLOAD) \ + _( 24, AUTHENTICATION_FAILED) \ + _( 34, SINGLE_PAIR_REQUIRED) \ + _( 35, NO_ADDITIONAL_SAS) \ + _( 36, INTERNAL_ADDRESS_FAILURE) \ + _( 37, FAILED_CP_REQUIRED) \ + _( 38, TS_UNACCEPTABLE) \ + _( 39, INVALID_SELECTORS) \ + _( 40, UNACCEPTABLE_ADDRESSES) \ + _( 41, UNEXPECTED_NAT_DETECTED) \ + _( 42, USE_ASSIGNED_HoA) \ + _( 43, TEMPORARY_FAILURE) \ + _( 44, CHILD_SA_NOT_FOUND) \ + _( 45, INVALID_GROUP_ID) \ + _( 46, AUTHORIZATION_FAILED) \ + _(16384, INITIAL_CONTACT) \ + _(16385, SET_WINDOW_SIZE) \ + _(16386, ADDITIONAL_TS_POSSIBLE) \ + _(16387, IPCOMP_SUPPORTED) \ + _(16388, NAT_DETECTION_SOURCE_IP) \ + _(16389, NAT_DETECTION_DESTINATION_IP) \ + _(16390, COOKIE) \ + _(16391, USE_TRANSPORT_MODE) \ + _(16392, HTTP_CERT_LOOKUP_SUPPORTED) \ + _(16393, REKEY_SA) \ + _(16394, ESP_TFC_PADDING_NOT_SUPPORTED) \ + _(16395, NON_FIRST_FRAGMENTS_ALSO) \ + _(16396, MOBIKE_SUPPORTED) \ + _(16397, ADDITIONAL_IP4_ADDRESS) \ + _(16398, ADDITIONAL_IP6_ADDRESS) \ + _(16399, NO_ADDITIONAL_ADDRESSES) \ + _(16400, UPDATE_SA_ADDRESSES) \ + _(16401, COOKIE2) \ + _(16402, NO_NATS_ALLOWED) \ + _(16403, AUTH_LIFETIME) \ + _(16404, MULTIPLE_AUTH_SUPPORTED) \ + _(16405, ANOTHER_AUTH_FOLLOWS) \ + _(16406, REDIRECT_SUPPORTED) \ + _(16407, REDIRECT) \ + _(16408, REDIRECTED_FROM) \ + _(16409, TICKET_LT_OPAQUE) \ + _(16410, TICKET_REQUEST) \ + _(16411, TICKET_ACK) \ + _(16412, TICKET_NACK) \ + _(16413, TICKET_OPAQUE) \ + _(16414, LINK_ID) \ + _(16415, USE_WESP_MODE) \ + _(16416, ROHC_SUPPORTED) \ + _(16417, EAP_ONLY_AUTHENTICATION) \ + _(16418, CHILDLESS_IKEV2_SUPPORTED) \ + _(16419, QUICK_CRASH_DETECTION) \ + _(16420, IKEV2_MESSAGE_ID_SYNC_SUPPORTED) \ + _(16421, IPSEC_REPLAY_COUNTER_SYNC_SUPPORTED) \ + _(16422, IKEV2_MESSAGE_ID_SYNC) \ + _(16423, IPSEC_REPLAY_COUNTER_SYNC) \ + _(16424, SECURE_PASSWORD_METHODS) \ + _(16425, PSK_PERSIST) \ + _(16426, PSK_CONFIRM) \ + _(16427, ERX_SUPPORTED) \ + _(16428, IFOM_CAPABILITY) \ + _(16429, SENDER_REQUEST_ID) \ + _(16430, IKEV2_FRAGMENTATION_SUPPORTED) \ + _(16431, SIGNATURE_HASH_ALGORITHMS) + + +typedef enum +{ +#define _(v,f) IKEV2_NOTIFY_MSG_##f = v, + foreach_ikev2_notify_msg_type +#undef _ +} ikev2_notify_msg_type_t; + +#define foreach_ikev2_transform_type \ + _(0, UNDEFINED, "undefined") \ + _(1, ENCR, "encr") \ + _(2, PRF, "prf") \ + _(3, INTEG, "integ") \ + _(4, DH, "dh-group") \ + _(5, ESN, "esn") + +typedef enum +{ +#define _(v,f,s) IKEV2_TRANSFORM_TYPE_##f = v, + foreach_ikev2_transform_type +#undef _ + IKEV2_TRANSFORM_NUM_TYPES +} ikev2_transform_type_t; + + +#define foreach_ikev2_transform_encr_type \ + _(1 , DES_IV64, "des-iv64") \ + _(2 , DES, "des") \ + _(3 , 3DES, "3des") \ + _(4 , RC5, "rc5") \ + _(5 , IDEA, "idea") \ + _(6 , CAST, "cast") \ + _(7 , BLOWFISH, "blowfish") \ + _(8 , 3IDEA, "3idea") \ + _(9 , DES_IV32, "des-iv32") \ + _(11, NULL, "null") \ + _(12, AES_CBC, "aes-cbc") \ + _(13, AES_CTR, "aes-ctr") + +typedef enum +{ +#define _(v,f,str) IKEV2_TRANSFORM_ENCR_TYPE_##f = v, + foreach_ikev2_transform_encr_type +#undef _ +} ikev2_transform_encr_type_t; + +#define foreach_ikev2_transform_prf_type \ + _(1, PRF_HMAC_MD5, "hmac-md5") \ + _(2, PRF_HMAC_SHA1, "hmac-sha1") \ + _(3, PRF_MAC_TIGER, "mac-tiger") \ + _(4, PRF_AES128_XCBC, "aes128-xcbc") \ + _(5, PRF_HMAC_SHA2_256, "hmac-sha2-256") \ + _(6, PRF_HMAC_SHA2_384, "hmac-sha2-384") \ + _(7, PRF_HMAC_SHA2_512, "hmac-sha2-512") \ + _(8, PRF_AES128_CMAC, "aes128-cmac") + +typedef enum +{ +#define _(v,f,str) IKEV2_TRANSFORM_PRF_TYPE_##f = v, + foreach_ikev2_transform_prf_type +#undef _ +} ikev2_transform_prf_type_t; + +#define foreach_ikev2_transform_integ_type \ + _(0, NONE, "none") \ + _(1, AUTH_HMAC_MD5_96, "md5-96") \ + _(2, AUTH_HMAC_SHA1_96, "sha1-96") \ + _(3, AUTH_DES_MAC, "des-mac") \ + _(4, AUTH_KPDK_MD5, "kpdk-md5") \ + _(5, AUTH_AES_XCBC_96, "aes-xcbc-96") \ + _(6, AUTH_HMAC_MD5_128, "md5-128") \ + _(7, AUTH_HMAC_SHA1_160, "sha1-160") \ + _(8, AUTH_AES_CMAC_96, "cmac-96") \ + _(9, AUTH_AES_128_GMAC, "aes-128-gmac") \ + _(10, AUTH_AES_192_GMAC, "aes-192-gmac") \ + _(11, AUTH_AES_256_GMAC, "aes-256-gmac") \ + _(12, AUTH_HMAC_SHA2_256_128, "hmac-sha2-256-128") \ + _(13, AUTH_HMAC_SHA2_384_192, "hmac-sha2-384-192") \ + _(14, AUTH_HMAC_SHA2_512_256, "hmac-sha2-512-256") + +typedef enum +{ +#define _(v,f, str) IKEV2_TRANSFORM_INTEG_TYPE_##f = v, + foreach_ikev2_transform_integ_type +#undef _ +} ikev2_transform_integ_type_t; + +#if defined(OPENSSL_NO_CISCO_FECDH) +#define foreach_ikev2_transform_dh_type \ + _(0, NONE, "none") \ + _(1, MODP_768, "modp-768") \ + _(2, MODP_1024, "modp-1024") \ + _(5, MODP_1536, "modp-1536") \ + _(14, MODP_2048, "modp-2048") \ + _(15, MODP_3072, "modp-3072") \ + _(16, MODP_4096, "modp-4096") \ + _(17, MODP_6144, "modp-6144") \ + _(18, MODP_8192, "modp-8192") \ + _(19, ECP_256, "ecp-256") \ + _(20, ECP_384, "ecp-384") \ + _(21, ECP_521, "ecp-521") \ + _(22, MODP_1024_160, "modp-1024-160") \ + _(23, MODP_2048_224, "modp-2048-224") \ + _(24, MODP_2048_256, "modp-2048-256") \ + _(25, ECP_192, "ecp-192") \ + _(26, ECP_224, "ecp-224") \ + _(27, BRAINPOOL_224, "brainpool-224") \ + _(28, BRAINPOOL_256, "brainpool-256") \ + _(29, BRAINPOOL_384, "brainpool-384") \ + _(30, BRAINPOOL_512, "brainpool-512") +#else +#define foreach_ikev2_transform_dh_type \ + _(0, NONE, "none") \ + _(1, MODP_768, "modp-768") \ + _(2, MODP_1024, "modp-1024") \ + _(5, MODP_1536, "modp-1536") \ + _(14, MODP_2048, "modp-2048") \ + _(15, MODP_3072, "modp-3072") \ + _(16, MODP_4096, "modp-4096") \ + _(17, MODP_6144, "modp-6144") \ + _(18, MODP_8192, "modp-8192") \ + _(19, ECP_256, "ecp-256") \ + _(20, ECP_384, "ecp-384") \ + _(21, ECP_521, "ecp-521") \ + _(22, MODP_1024_160, "modp-1024-160") \ + _(23, MODP_2048_224, "modp-2048-224") \ + _(24, MODP_2048_256, "modp-2048-256") \ + _(25, ECP_192, "ecp-192") +#endif + +typedef enum +{ +#define _(v,f, str) IKEV2_TRANSFORM_DH_TYPE_##f = v, + foreach_ikev2_transform_dh_type +#undef _ +} ikev2_transform_dh_type_t; + +#define foreach_ikev2_transform_esn_type \ + _(0, NO_ESN, "no") \ + _(1, ESN, "yes") + +typedef enum +{ +#define _(v,f,str) IKEV2_TRANSFORM_ESN_TYPE_##f = v, + foreach_ikev2_transform_esn_type +#undef _ +} ikev2_transform_esn_type_t; + +#define foreach_ikev2_auth_method \ + _( 1, RSA_SIG, "rsa-sig") \ + _( 2, SHARED_KEY_MIC, "shared-key-mic") + +typedef enum +{ +#define _(v,f,s) IKEV2_AUTH_METHOD_##f = v, + foreach_ikev2_auth_method +#undef _ +} ikev2_auth_method_t; + +#define foreach_ikev2_id_type \ + _( 1, ID_IPV4_ADDR, "ip4-addr") \ + _( 2, ID_FQDN, "fqdn") \ + _( 3, ID_RFC822_ADDR, "rfc822") \ + _( 5, ID_IPV6_ADDR, "ip6-addr") \ + _( 9, ID_DER_ASN1_DN, "der-asn1-dn") \ + _(10, ID_DER_ASN1_GN, "der-asn1-gn") \ + _(11, ID_KEY_ID, "key-id") + +typedef enum +{ +#define _(v,f,s) IKEV2_ID_TYPE_##f = v, + foreach_ikev2_id_type +#undef _ +} ikev2_id_type_t; + +clib_error_t *ikev2_init (vlib_main_t * vm); +clib_error_t *ikev2_set_local_key (vlib_main_t * vm, u8 * file); +clib_error_t *ikev2_add_del_profile (vlib_main_t * vm, u8 * name, int is_add); +clib_error_t *ikev2_set_profile_auth (vlib_main_t * vm, u8 * name, + u8 auth_method, u8 * data, + u8 data_hex_format); +clib_error_t *ikev2_set_profile_id (vlib_main_t * vm, u8 * name, + u8 id_type, u8 * data, int is_local); +clib_error_t *ikev2_set_profile_ts (vlib_main_t * vm, u8 * name, + u8 protocol_id, u16 start_port, + u16 end_port, ip4_address_t start_addr, + ip4_address_t end_addr, int is_local); +clib_error_t *ikev2_set_profile_responder (vlib_main_t * vm, u8 * name, + u32 sw_if_index, + ip4_address_t ip4); +clib_error_t *ikev2_set_profile_ike_transforms (vlib_main_t * vm, u8 * name, + ikev2_transform_encr_type_t + crypto_alg, + ikev2_transform_integ_type_t + integ_alg, + ikev2_transform_dh_type_t + dh_type, u32 crypto_key_size); +clib_error_t *ikev2_set_profile_esp_transforms (vlib_main_t * vm, u8 * name, + ikev2_transform_encr_type_t + crypto_alg, + ikev2_transform_integ_type_t + integ_alg, + ikev2_transform_dh_type_t + dh_type, u32 crypto_key_size); +clib_error_t *ikev2_set_profile_sa_lifetime (vlib_main_t * vm, u8 * name, + u64 lifetime, u32 jitter, + u32 handover, u64 maxdata); +clib_error_t *ikev2_initiate_sa_init (vlib_main_t * vm, u8 * name); +clib_error_t *ikev2_initiate_delete_child_sa (vlib_main_t * vm, u32 ispi); +clib_error_t *ikev2_initiate_delete_ike_sa (vlib_main_t * vm, u64 ispi); +clib_error_t *ikev2_initiate_rekey_child_sa (vlib_main_t * vm, u32 ispi); + +/* ikev2_format.c */ +u8 *format_ikev2_auth_method (u8 * s, va_list * args); +u8 *format_ikev2_id_type (u8 * s, va_list * args); +u8 *format_ikev2_transform_type (u8 * s, va_list * args); +u8 *format_ikev2_notify_msg_type (u8 * s, va_list * args); +u8 *format_ikev2_transform_encr_type (u8 * s, va_list * args); +u8 *format_ikev2_transform_prf_type (u8 * s, va_list * args); +u8 *format_ikev2_transform_integ_type (u8 * s, va_list * args); +u8 *format_ikev2_transform_dh_type (u8 * s, va_list * args); +u8 *format_ikev2_transform_esn_type (u8 * s, va_list * args); +u8 *format_ikev2_sa_transform (u8 * s, va_list * args); + +uword unformat_ikev2_auth_method (unformat_input_t * input, va_list * args); +uword unformat_ikev2_id_type (unformat_input_t * input, va_list * args); +uword unformat_ikev2_transform_type (unformat_input_t * input, + va_list * args); +uword unformat_ikev2_transform_encr_type (unformat_input_t * input, + va_list * args); +uword unformat_ikev2_transform_prf_type (unformat_input_t * input, + va_list * args); +uword unformat_ikev2_transform_integ_type (unformat_input_t * input, + va_list * args); +uword unformat_ikev2_transform_dh_type (unformat_input_t * input, + va_list * args); +uword unformat_ikev2_transform_esn_type (unformat_input_t * input, + va_list * args); + +#endif /* __included_ikev2_h__ */ + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/plugins/ikev2/ikev2_api.c b/src/plugins/ikev2/ikev2_api.c new file mode 100644 index 00000000000..ace28c5aa20 --- /dev/null +++ b/src/plugins/ikev2/ikev2_api.c @@ -0,0 +1,468 @@ +/* + *------------------------------------------------------------------ + * ipsec_api.c - ipsec api + * + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + *------------------------------------------------------------------ + */ + +#include <vnet/vnet.h> +#include <vlibmemory/api.h> +#include <vnet/api_errno.h> +#include <vpp/app/version.h> + +#include <ikev2/ikev2.h> +#include <ikev2/ikev2_priv.h> + +/* define message IDs */ +#include <plugins/ikev2/ikev2_msg_enum.h> + +#define vl_typedefs /* define message structures */ +#include <ikev2/ikev2.api.h> +#undef vl_typedefs + +#define vl_endianfun /* define message structures */ +#include <ikev2/ikev2.api.h> +#undef vl_endianfun + +/* instantiate all the print functions we know about */ +#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__) +#define vl_printfun +#include <ikev2/ikev2.api.h> +#undef vl_printfun + +/* Get the API version number */ +#define vl_api_version(n,v) static u32 api_version=(v); +#include <ikev2/ikev2.api.h> +#undef vl_api_version + +extern ikev2_main_t ikev2_main; + +#define IKEV2_PLUGIN_VERSION_MAJOR 1 +#define IKEV2_PLUGIN_VERSION_MINOR 0 +#define REPLY_MSG_ID_BASE ikev2_main.msg_id_base +#include <vlibapi/api_helper_macros.h> + +#define foreach_ikev2_api_msg \ +_(IKEV2_PLUGIN_GET_VERSION, ikev2_plugin_get_version) \ +_(IKEV2_PROFILE_ADD_DEL, ikev2_profile_add_del) \ +_(IKEV2_PROFILE_SET_AUTH, ikev2_profile_set_auth) \ +_(IKEV2_PROFILE_SET_ID, ikev2_profile_set_id) \ +_(IKEV2_PROFILE_SET_TS, ikev2_profile_set_ts) \ +_(IKEV2_SET_LOCAL_KEY, ikev2_set_local_key) \ +_(IKEV2_SET_RESPONDER, ikev2_set_responder) \ +_(IKEV2_SET_IKE_TRANSFORMS, ikev2_set_ike_transforms) \ +_(IKEV2_SET_ESP_TRANSFORMS, ikev2_set_esp_transforms) \ +_(IKEV2_SET_SA_LIFETIME, ikev2_set_sa_lifetime) \ +_(IKEV2_INITIATE_SA_INIT, ikev2_initiate_sa_init) \ +_(IKEV2_INITIATE_DEL_IKE_SA, ikev2_initiate_del_ike_sa) \ +_(IKEV2_INITIATE_DEL_CHILD_SA, ikev2_initiate_del_child_sa) \ +_(IKEV2_INITIATE_REKEY_CHILD_SA, ikev2_initiate_rekey_child_sa) + +static void +vl_api_ikev2_plugin_get_version_t_handler (vl_api_ikev2_plugin_get_version_t * + mp) +{ + ikev2_main_t *im = &ikev2_main; + vl_api_ikev2_plugin_get_version_reply_t *rmp; + int msg_size = sizeof (*rmp); + vl_api_registration_t *reg; + + reg = vl_api_client_index_to_registration (mp->client_index); + if (!reg) + return; + + rmp = vl_msg_api_alloc (msg_size); + clib_memset (rmp, 0, msg_size); + rmp->_vl_msg_id = + ntohs (VL_API_IKEV2_PLUGIN_GET_VERSION_REPLY + im->msg_id_base); + rmp->context = mp->context; + rmp->major = htonl (IKEV2_PLUGIN_VERSION_MAJOR); + rmp->minor = htonl (IKEV2_PLUGIN_VERSION_MINOR); + + vl_api_send_msg (reg, (u8 *) rmp); +} + +static void +vl_api_ikev2_profile_add_del_t_handler (vl_api_ikev2_profile_add_del_t * mp) +{ + vl_api_ikev2_profile_add_del_reply_t *rmp; + int rv = 0; + +#if WITH_LIBSSL > 0 + vlib_main_t *vm = vlib_get_main (); + clib_error_t *error; + u8 *tmp = format (0, "%s", mp->name); + error = ikev2_add_del_profile (vm, tmp, mp->is_add); + vec_free (tmp); + if (error) + rv = VNET_API_ERROR_UNSPECIFIED; +#else + rv = VNET_API_ERROR_UNIMPLEMENTED; +#endif + + REPLY_MACRO (VL_API_IKEV2_PROFILE_ADD_DEL_REPLY); +} + +static void + vl_api_ikev2_profile_set_auth_t_handler + (vl_api_ikev2_profile_set_auth_t * mp) +{ + vl_api_ikev2_profile_set_auth_reply_t *rmp; + int rv = 0; + +#if WITH_LIBSSL > 0 + vlib_main_t *vm = vlib_get_main (); + clib_error_t *error; + int data_len = ntohl (mp->data_len); + u8 *tmp = format (0, "%s", mp->name); + u8 *data = vec_new (u8, data_len); + clib_memcpy (data, mp->data, data_len); + error = ikev2_set_profile_auth (vm, tmp, mp->auth_method, data, mp->is_hex); + vec_free (tmp); + vec_free (data); + if (error) + rv = VNET_API_ERROR_UNSPECIFIED; +#else + rv = VNET_API_ERROR_UNIMPLEMENTED; +#endif + + REPLY_MACRO (VL_API_IKEV2_PROFILE_SET_AUTH_REPLY); +} + +static void +vl_api_ikev2_profile_set_id_t_handler (vl_api_ikev2_profile_set_id_t * mp) +{ + vl_api_ikev2_profile_add_del_reply_t *rmp; + int rv = 0; + +#if WITH_LIBSSL > 0 + vlib_main_t *vm = vlib_get_main (); + clib_error_t *error; + u8 *tmp = format (0, "%s", mp->name); + int data_len = ntohl (mp->data_len); + u8 *data = vec_new (u8, data_len); + clib_memcpy (data, mp->data, data_len); + error = ikev2_set_profile_id (vm, tmp, mp->id_type, data, mp->is_local); + vec_free (tmp); + vec_free (data); + if (error) + rv = VNET_API_ERROR_UNSPECIFIED; +#else + rv = VNET_API_ERROR_UNIMPLEMENTED; +#endif + + REPLY_MACRO (VL_API_IKEV2_PROFILE_SET_ID_REPLY); +} + +static void +vl_api_ikev2_profile_set_ts_t_handler (vl_api_ikev2_profile_set_ts_t * mp) +{ + vl_api_ikev2_profile_set_ts_reply_t *rmp; + int rv = 0; + +#if WITH_LIBSSL > 0 + vlib_main_t *vm = vlib_get_main (); + clib_error_t *error; + u8 *tmp = format (0, "%s", mp->name); + error = ikev2_set_profile_ts (vm, tmp, mp->proto, mp->start_port, + mp->end_port, (ip4_address_t) mp->start_addr, + (ip4_address_t) mp->end_addr, mp->is_local); + vec_free (tmp); + if (error) + rv = VNET_API_ERROR_UNSPECIFIED; +#else + rv = VNET_API_ERROR_UNIMPLEMENTED; +#endif + + REPLY_MACRO (VL_API_IKEV2_PROFILE_SET_TS_REPLY); +} + +static void +vl_api_ikev2_set_local_key_t_handler (vl_api_ikev2_set_local_key_t * mp) +{ + vl_api_ikev2_profile_set_ts_reply_t *rmp; + int rv = 0; + +#if WITH_LIBSSL > 0 + vlib_main_t *vm = vlib_get_main (); + clib_error_t *error; + + error = ikev2_set_local_key (vm, mp->key_file); + if (error) + rv = VNET_API_ERROR_UNSPECIFIED; +#else + rv = VNET_API_ERROR_UNIMPLEMENTED; +#endif + + REPLY_MACRO (VL_API_IKEV2_SET_LOCAL_KEY_REPLY); +} + +static void +vl_api_ikev2_set_responder_t_handler (vl_api_ikev2_set_responder_t * mp) +{ + vl_api_ikev2_set_responder_reply_t *rmp; + int rv = 0; + +#if WITH_LIBSSL > 0 + vlib_main_t *vm = vlib_get_main (); + clib_error_t *error; + + u8 *tmp = format (0, "%s", mp->name); + ip4_address_t ip4; + clib_memcpy (&ip4, mp->address, sizeof (ip4)); + + error = ikev2_set_profile_responder (vm, tmp, mp->sw_if_index, ip4); + vec_free (tmp); + if (error) + rv = VNET_API_ERROR_UNSPECIFIED; +#else + rv = VNET_API_ERROR_UNIMPLEMENTED; +#endif + + REPLY_MACRO (VL_API_IKEV2_SET_RESPONDER_REPLY); +} + +static void +vl_api_ikev2_set_ike_transforms_t_handler (vl_api_ikev2_set_ike_transforms_t * + mp) +{ + vl_api_ikev2_set_ike_transforms_reply_t *rmp; + int rv = 0; + +#if WITH_LIBSSL > 0 + vlib_main_t *vm = vlib_get_main (); + clib_error_t *error; + + u8 *tmp = format (0, "%s", mp->name); + + error = + ikev2_set_profile_ike_transforms (vm, tmp, mp->crypto_alg, mp->integ_alg, + mp->dh_group, mp->crypto_key_size); + vec_free (tmp); + if (error) + rv = VNET_API_ERROR_UNSPECIFIED; +#else + rv = VNET_API_ERROR_UNIMPLEMENTED; +#endif + + REPLY_MACRO (VL_API_IKEV2_SET_IKE_TRANSFORMS_REPLY); +} + +static void +vl_api_ikev2_set_esp_transforms_t_handler (vl_api_ikev2_set_esp_transforms_t * + mp) +{ + vl_api_ikev2_set_esp_transforms_reply_t *rmp; + int rv = 0; + +#if WITH_LIBSSL > 0 + vlib_main_t *vm = vlib_get_main (); + clib_error_t *error; + + u8 *tmp = format (0, "%s", mp->name); + + error = + ikev2_set_profile_esp_transforms (vm, tmp, mp->crypto_alg, mp->integ_alg, + mp->dh_group, mp->crypto_key_size); + vec_free (tmp); + if (error) + rv = VNET_API_ERROR_UNSPECIFIED; +#else + rv = VNET_API_ERROR_UNIMPLEMENTED; +#endif + + REPLY_MACRO (VL_API_IKEV2_SET_ESP_TRANSFORMS_REPLY); +} + +static void +vl_api_ikev2_set_sa_lifetime_t_handler (vl_api_ikev2_set_sa_lifetime_t * mp) +{ + vl_api_ikev2_set_sa_lifetime_reply_t *rmp; + int rv = 0; + +#if WITH_LIBSSL > 0 + vlib_main_t *vm = vlib_get_main (); + clib_error_t *error; + + u8 *tmp = format (0, "%s", mp->name); + + error = + ikev2_set_profile_sa_lifetime (vm, tmp, mp->lifetime, mp->lifetime_jitter, + mp->handover, mp->lifetime_maxdata); + vec_free (tmp); + if (error) + rv = VNET_API_ERROR_UNSPECIFIED; +#else + rv = VNET_API_ERROR_UNIMPLEMENTED; +#endif + + REPLY_MACRO (VL_API_IKEV2_SET_SA_LIFETIME_REPLY); +} + +static void +vl_api_ikev2_initiate_sa_init_t_handler (vl_api_ikev2_initiate_sa_init_t * mp) +{ + vl_api_ikev2_initiate_sa_init_reply_t *rmp; + int rv = 0; + +#if WITH_LIBSSL > 0 + vlib_main_t *vm = vlib_get_main (); + clib_error_t *error; + + u8 *tmp = format (0, "%s", mp->name); + + error = ikev2_initiate_sa_init (vm, tmp); + vec_free (tmp); + if (error) + rv = VNET_API_ERROR_UNSPECIFIED; +#else + rv = VNET_API_ERROR_UNIMPLEMENTED; +#endif + + REPLY_MACRO (VL_API_IKEV2_INITIATE_SA_INIT_REPLY); +} + +static void +vl_api_ikev2_initiate_del_ike_sa_t_handler (vl_api_ikev2_initiate_del_ike_sa_t + * mp) +{ + vl_api_ikev2_initiate_del_ike_sa_reply_t *rmp; + int rv = 0; + +#if WITH_LIBSSL > 0 + vlib_main_t *vm = vlib_get_main (); + clib_error_t *error; + + error = ikev2_initiate_delete_ike_sa (vm, mp->ispi); + if (error) + rv = VNET_API_ERROR_UNSPECIFIED; +#else + rv = VNET_API_ERROR_UNIMPLEMENTED; +#endif + + REPLY_MACRO (VL_API_IKEV2_INITIATE_DEL_IKE_SA_REPLY); +} + +static void + vl_api_ikev2_initiate_del_child_sa_t_handler + (vl_api_ikev2_initiate_del_child_sa_t * mp) +{ + vl_api_ikev2_initiate_del_child_sa_reply_t *rmp; + int rv = 0; + +#if WITH_LIBSSL > 0 + vlib_main_t *vm = vlib_get_main (); + clib_error_t *error; + + error = ikev2_initiate_delete_child_sa (vm, mp->ispi); + if (error) + rv = VNET_API_ERROR_UNSPECIFIED; +#else + rv = VNET_API_ERROR_UNIMPLEMENTED; +#endif + + REPLY_MACRO (VL_API_IKEV2_INITIATE_DEL_CHILD_SA_REPLY); +} + +static void + vl_api_ikev2_initiate_rekey_child_sa_t_handler + (vl_api_ikev2_initiate_rekey_child_sa_t * mp) +{ + vl_api_ikev2_initiate_rekey_child_sa_reply_t *rmp; + int rv = 0; + +#if WITH_LIBSSL > 0 + vlib_main_t *vm = vlib_get_main (); + clib_error_t *error; + + error = ikev2_initiate_rekey_child_sa (vm, mp->ispi); + if (error) + rv = VNET_API_ERROR_UNSPECIFIED; +#else + rv = VNET_API_ERROR_UNIMPLEMENTED; +#endif + + REPLY_MACRO (VL_API_IKEV2_INITIATE_REKEY_CHILD_SA_REPLY); +} + +/* + * ikev2_api_hookup + * Add vpe's API message handlers to the table. + * vlib has already mapped shared memory and + * added the client registration handlers. + * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process() + */ +#define vl_msg_name_crc_list +#include <ikev2/ikev2.api.h> +#undef vl_msg_name_crc_list + +static void +setup_message_id_table (ikev2_main_t * im, api_main_t * am) +{ +#define _(id,n,crc) \ + vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id + im->msg_id_base); + foreach_vl_msg_name_crc_ikev2; +#undef _ +} + +static clib_error_t * +ikev2_plugin_api_hookup (vlib_main_t * vm) +{ + ikev2_main_t *im = &ikev2_main; +#define _(N,n) \ + vl_msg_api_set_handlers(VL_API_##N + im->msg_id_base, #n, \ + vl_api_##n##_t_handler, \ + vl_noop_handler, \ + vl_api_##n##_t_endian, \ + vl_api_##n##_t_print, \ + sizeof(vl_api_##n##_t), 1); + foreach_ikev2_api_msg; +#undef _ + + return (NULL); +} + +static clib_error_t * +ikev2_api_init (vlib_main_t * vm) +{ + ikev2_main_t *im = &ikev2_main; + clib_error_t *error = 0; + u8 *name; + + name = format (0, "ikev2_%08x%c", api_version, 0); + + /* Ask for a correctly-sized block of API message decode slots */ + im->msg_id_base = vl_msg_api_get_msg_ids ((char *) name, + VL_MSG_FIRST_AVAILABLE); + + error = ikev2_plugin_api_hookup (vm); + + /* Add our API messages to the global name_crc hash table */ + setup_message_id_table (im, &api_main); + + vec_free (name); + + return (error); +} + +VLIB_INIT_FUNCTION (ikev2_api_init); + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/plugins/ikev2/ikev2_cli.c b/src/plugins/ikev2/ikev2_cli.c new file mode 100644 index 00000000000..8801793be0b --- /dev/null +++ b/src/plugins/ikev2/ikev2_cli.c @@ -0,0 +1,602 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include <vlib/vlib.h> +#include <vnet/vnet.h> +#include <vnet/pg/pg.h> +#include <vppinfra/error.h> +#include <vnet/udp/udp.h> +#include <plugins/ikev2/ikev2.h> +#include <plugins/ikev2/ikev2_priv.h> + +u8 * +format_ikev2_id_type_and_data (u8 * s, va_list * args) +{ + ikev2_id_t *id = va_arg (*args, ikev2_id_t *); + + if (id->type == 0 || vec_len (id->data) == 0) + return format (s, "none"); + + s = format (s, "%U", format_ikev2_id_type, id->type); + + if (id->type == IKEV2_ID_TYPE_ID_FQDN || + id->type == IKEV2_ID_TYPE_ID_RFC822_ADDR) + { + s = format (s, " %v", id->data); + } + else + { + s = + format (s, " %U", format_hex_bytes, &id->data, + (uword) (vec_len (id->data))); + } + + return s; +} + + +static clib_error_t * +show_ikev2_sa_command_fn (vlib_main_t * vm, + unformat_input_t * input, vlib_cli_command_t * cmd) +{ + ikev2_main_t *km = &ikev2_main; + ikev2_main_per_thread_data_t *tkm; + ikev2_sa_t *sa; + ikev2_ts_t *ts; + ikev2_child_sa_t *child; + ikev2_sa_transform_t *tr; + + vec_foreach (tkm, km->per_thread_data) + { + /* *INDENT-OFF* */ + pool_foreach (sa, tkm->sas, ({ + u8 * s = 0; + vlib_cli_output(vm, " iip %U ispi %lx rip %U rspi %lx", + format_ip4_address, &sa->iaddr, sa->ispi, + format_ip4_address, &sa->raddr, sa->rspi); + + tr = ikev2_sa_get_td_for_type(sa->r_proposals, IKEV2_TRANSFORM_TYPE_ENCR); + s = format(s, "%U ", format_ikev2_sa_transform, tr); + + tr = ikev2_sa_get_td_for_type(sa->r_proposals, IKEV2_TRANSFORM_TYPE_PRF); + s = format(s, "%U ", format_ikev2_sa_transform, tr); + + tr = ikev2_sa_get_td_for_type(sa->r_proposals, IKEV2_TRANSFORM_TYPE_INTEG); + s = format(s, "%U ", format_ikev2_sa_transform, tr); + + tr = ikev2_sa_get_td_for_type(sa->r_proposals, IKEV2_TRANSFORM_TYPE_DH); + s = format(s, "%U ", format_ikev2_sa_transform, tr); + + vlib_cli_output(vm, " %v", s); + vec_free(s); + + vlib_cli_output(vm, " nonce i:%U\n r:%U", + format_hex_bytes, sa->i_nonce, vec_len(sa->i_nonce), + format_hex_bytes, sa->r_nonce, vec_len(sa->r_nonce)); + + vlib_cli_output(vm, " SK_d %U", + format_hex_bytes, sa->sk_d, vec_len(sa->sk_d)); + vlib_cli_output(vm, " SK_a i:%U\n r:%U", + format_hex_bytes, sa->sk_ai, vec_len(sa->sk_ai), + format_hex_bytes, sa->sk_ar, vec_len(sa->sk_ar)); + vlib_cli_output(vm, " SK_e i:%U\n r:%U", + format_hex_bytes, sa->sk_ei, vec_len(sa->sk_ei), + format_hex_bytes, sa->sk_er, vec_len(sa->sk_er)); + vlib_cli_output(vm, " SK_p i:%U\n r:%U", + format_hex_bytes, sa->sk_pi, vec_len(sa->sk_pi), + format_hex_bytes, sa->sk_pr, vec_len(sa->sk_pr)); + + vlib_cli_output(vm, " identifier (i) %U", + format_ikev2_id_type_and_data, &sa->i_id); + vlib_cli_output(vm, " identifier (r) %U", + format_ikev2_id_type_and_data, &sa->r_id); + + vec_foreach(child, sa->childs) + { + vlib_cli_output(vm, " child sa %u:", child - sa->childs); + + tr = ikev2_sa_get_td_for_type(child->r_proposals, IKEV2_TRANSFORM_TYPE_ENCR); + s = format(s, "%U ", format_ikev2_sa_transform, tr); + + tr = ikev2_sa_get_td_for_type(child->r_proposals, IKEV2_TRANSFORM_TYPE_INTEG); + s = format(s, "%U ", format_ikev2_sa_transform, tr); + + tr = ikev2_sa_get_td_for_type(child->r_proposals, IKEV2_TRANSFORM_TYPE_ESN); + s = format(s, "%U ", format_ikev2_sa_transform, tr); + + vlib_cli_output(vm, " %v", s); + vec_free(s); + + vlib_cli_output(vm, " spi(i) %lx spi(r) %lx", + child->i_proposals ? child->i_proposals[0].spi : 0, + child->r_proposals ? child->r_proposals[0].spi : 0); + + vlib_cli_output(vm, " SK_e i:%U\n r:%U", + format_hex_bytes, child->sk_ei, vec_len(child->sk_ei), + format_hex_bytes, child->sk_er, vec_len(child->sk_er)); + vlib_cli_output(vm, " SK_a i:%U\n r:%U", + format_hex_bytes, child->sk_ai, vec_len(child->sk_ai), + format_hex_bytes, child->sk_ar, vec_len(child->sk_ar)); + vlib_cli_output(vm, " traffic selectors (i):"); + vec_foreach(ts, child->tsi) + { + vlib_cli_output(vm, " %u type %u protocol_id %u addr " + "%U - %U port %u - %u", + ts - child->tsi, + ts->ts_type, ts->protocol_id, + format_ip4_address, &ts->start_addr, + format_ip4_address, &ts->end_addr, + clib_net_to_host_u16( ts->start_port), + clib_net_to_host_u16( ts->end_port)); + } + vlib_cli_output(vm, " traffic selectors (r):"); + vec_foreach(ts, child->tsr) + { + vlib_cli_output(vm, " %u type %u protocol_id %u addr " + "%U - %U port %u - %u", + ts - child->tsr, + ts->ts_type, ts->protocol_id, + format_ip4_address, &ts->start_addr, + format_ip4_address, &ts->end_addr, + clib_net_to_host_u16( ts->start_port), + clib_net_to_host_u16( ts->end_port)); + } + } + vlib_cli_output(vm, ""); + })); + /* *INDENT-ON* */ + } + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (show_ikev2_sa_command, static) = { + .path = "show ikev2 sa", + .short_help = "show ikev2 sa", + .function = show_ikev2_sa_command_fn, +}; +/* *INDENT-ON* */ + +static clib_error_t * +ikev2_profile_add_del_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + vnet_main_t *vnm = vnet_get_main (); + unformat_input_t _line_input, *line_input = &_line_input; + u8 *name = 0; + clib_error_t *r = 0; + u32 id_type; + u8 *data = 0; + u32 tmp1, tmp2, tmp3; + u64 tmp4, tmp5; + ip4_address_t ip4; + ip4_address_t end_addr; + u32 responder_sw_if_index = (u32) ~ 0; + ip4_address_t responder_ip4; + ikev2_transform_encr_type_t crypto_alg; + ikev2_transform_integ_type_t integ_alg; + ikev2_transform_dh_type_t dh_type; + + const char *valid_chars = "a-zA-Z0-9_"; + + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "add %U", unformat_token, valid_chars, &name)) + { + r = ikev2_add_del_profile (vm, name, 1); + goto done; + } + else + if (unformat + (line_input, "del %U", unformat_token, valid_chars, &name)) + { + r = ikev2_add_del_profile (vm, name, 0); + goto done; + } + else if (unformat (line_input, "set %U auth shared-key-mic string %v", + unformat_token, valid_chars, &name, &data)) + { + r = + ikev2_set_profile_auth (vm, name, + IKEV2_AUTH_METHOD_SHARED_KEY_MIC, data, + 0); + goto done; + } + else if (unformat (line_input, "set %U auth shared-key-mic hex %U", + unformat_token, valid_chars, &name, + unformat_hex_string, &data)) + { + r = + ikev2_set_profile_auth (vm, name, + IKEV2_AUTH_METHOD_SHARED_KEY_MIC, data, + 1); + goto done; + } + else if (unformat (line_input, "set %U auth rsa-sig cert-file %v", + unformat_token, valid_chars, &name, &data)) + { + r = + ikev2_set_profile_auth (vm, name, IKEV2_AUTH_METHOD_RSA_SIG, data, + 0); + goto done; + } + else if (unformat (line_input, "set %U id local %U %U", + unformat_token, valid_chars, &name, + unformat_ikev2_id_type, &id_type, + unformat_ip4_address, &ip4)) + { + data = vec_new (u8, 4); + clib_memcpy (data, ip4.as_u8, 4); + r = + ikev2_set_profile_id (vm, name, (u8) id_type, data, /*local */ 1); + goto done; + } + else if (unformat (line_input, "set %U id local %U 0x%U", + unformat_token, valid_chars, &name, + unformat_ikev2_id_type, &id_type, + unformat_hex_string, &data)) + { + r = + ikev2_set_profile_id (vm, name, (u8) id_type, data, /*local */ 1); + goto done; + } + else if (unformat (line_input, "set %U id local %U %v", + unformat_token, valid_chars, &name, + unformat_ikev2_id_type, &id_type, &data)) + { + r = + ikev2_set_profile_id (vm, name, (u8) id_type, data, /*local */ 1); + goto done; + } + else if (unformat (line_input, "set %U id remote %U %U", + unformat_token, valid_chars, &name, + unformat_ikev2_id_type, &id_type, + unformat_ip4_address, &ip4)) + { + data = vec_new (u8, 4); + clib_memcpy (data, ip4.as_u8, 4); + r = ikev2_set_profile_id (vm, name, (u8) id_type, data, /*remote */ + 0); + goto done; + } + else if (unformat (line_input, "set %U id remote %U 0x%U", + unformat_token, valid_chars, &name, + unformat_ikev2_id_type, &id_type, + unformat_hex_string, &data)) + { + r = ikev2_set_profile_id (vm, name, (u8) id_type, data, /*remote */ + 0); + goto done; + } + else if (unformat (line_input, "set %U id remote %U %v", + unformat_token, valid_chars, &name, + unformat_ikev2_id_type, &id_type, &data)) + { + r = ikev2_set_profile_id (vm, name, (u8) id_type, data, /*remote */ + 0); + goto done; + } + else if (unformat (line_input, "set %U traffic-selector local " + "ip-range %U - %U port-range %u - %u protocol %u", + unformat_token, valid_chars, &name, + unformat_ip4_address, &ip4, + unformat_ip4_address, &end_addr, + &tmp1, &tmp2, &tmp3)) + { + r = + ikev2_set_profile_ts (vm, name, (u8) tmp3, (u16) tmp1, (u16) tmp2, + ip4, end_addr, /*local */ 1); + goto done; + } + else if (unformat (line_input, "set %U traffic-selector remote " + "ip-range %U - %U port-range %u - %u protocol %u", + unformat_token, valid_chars, &name, + unformat_ip4_address, &ip4, + unformat_ip4_address, &end_addr, + &tmp1, &tmp2, &tmp3)) + { + r = + ikev2_set_profile_ts (vm, name, (u8) tmp3, (u16) tmp1, (u16) tmp2, + ip4, end_addr, /*remote */ 0); + goto done; + } + else if (unformat (line_input, "set %U responder %U %U", + unformat_token, valid_chars, &name, + unformat_vnet_sw_interface, vnm, + &responder_sw_if_index, unformat_ip4_address, + &responder_ip4)) + { + r = + ikev2_set_profile_responder (vm, name, responder_sw_if_index, + responder_ip4); + goto done; + } + else + if (unformat + (line_input, + "set %U ike-crypto-alg %U %u ike-integ-alg %U ike-dh %U", + unformat_token, valid_chars, &name, + unformat_ikev2_transform_encr_type, &crypto_alg, &tmp1, + unformat_ikev2_transform_integ_type, &integ_alg, + unformat_ikev2_transform_dh_type, &dh_type)) + { + r = + ikev2_set_profile_ike_transforms (vm, name, crypto_alg, integ_alg, + dh_type, tmp1); + goto done; + } + else + if (unformat + (line_input, + "set %U esp-crypto-alg %U %u esp-integ-alg %U esp-dh %U", + unformat_token, valid_chars, &name, + unformat_ikev2_transform_encr_type, &crypto_alg, &tmp1, + unformat_ikev2_transform_integ_type, &integ_alg, + unformat_ikev2_transform_dh_type, &dh_type)) + { + r = + ikev2_set_profile_esp_transforms (vm, name, crypto_alg, integ_alg, + dh_type, tmp1); + goto done; + } + else if (unformat (line_input, "set %U sa-lifetime %lu %u %u %lu", + unformat_token, valid_chars, &name, + &tmp4, &tmp1, &tmp2, &tmp5)) + { + r = + ikev2_set_profile_sa_lifetime (vm, name, tmp4, tmp1, tmp2, tmp5); + goto done; + } + else + break; + } + + r = clib_error_return (0, "parse error: '%U'", + format_unformat_error, line_input); + +done: + vec_free (name); + vec_free (data); + unformat_free (line_input); + return r; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (ikev2_profile_add_del_command, static) = { + .path = "ikev2 profile", + .short_help = + "ikev2 profile [add|del] <id>\n" + "ikev2 profile set <id> auth [rsa-sig|shared-key-mic] [cert-file|string|hex]" + " <data>\n" + "ikev2 profile set <id> id <local|remote> <type> <data>\n" + "ikev2 profile set <id> traffic-selector <local|remote> ip-range " + "<start-addr> - <end-addr> port-range <start-port> - <end-port> " + "protocol <protocol-number>\n" + "ikev2 profile set <id> responder <interface> <addr>\n" + "ikev2 profile set <id> ike-crypto-alg <crypto alg> <key size> ike-integ-alg <integ alg> ike-dh <dh type>\n" + "ikev2 profile set <id> esp-crypto-alg <crypto alg> <key size> esp-integ-alg <integ alg> esp-dh <dh type>\n" + "ikev2 profile set <id> sa-lifetime <seconds> <jitter> <handover> <max bytes>", + .function = ikev2_profile_add_del_command_fn, +}; +/* *INDENT-ON* */ + +static clib_error_t * +show_ikev2_profile_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + ikev2_main_t *km = &ikev2_main; + ikev2_profile_t *p; + + /* *INDENT-OFF* */ + pool_foreach (p, km->profiles, ({ + vlib_cli_output(vm, "profile %v", p->name); + + if (p->auth.data) + { + if (p->auth.hex) + vlib_cli_output(vm, " auth-method %U auth data 0x%U", + format_ikev2_auth_method, p->auth.method, + format_hex_bytes, p->auth.data, vec_len(p->auth.data)); + else + vlib_cli_output(vm, " auth-method %U auth data %v", + format_ikev2_auth_method, p->auth.method, p->auth.data); + } + + if (p->loc_id.data) + { + if (p->loc_id.type == IKEV2_ID_TYPE_ID_IPV4_ADDR) + vlib_cli_output(vm, " local id-type %U data %U", + format_ikev2_id_type, p->loc_id.type, + format_ip4_address, p->loc_id.data); + else if (p->loc_id.type == IKEV2_ID_TYPE_ID_KEY_ID) + vlib_cli_output(vm, " local id-type %U data 0x%U", + format_ikev2_id_type, p->loc_id.type, + format_hex_bytes, p->loc_id.data, + vec_len(p->loc_id.data)); + else + vlib_cli_output(vm, " local id-type %U data %v", + format_ikev2_id_type, p->loc_id.type, p->loc_id.data); + } + + if (p->rem_id.data) + { + if (p->rem_id.type == IKEV2_ID_TYPE_ID_IPV4_ADDR) + vlib_cli_output(vm, " remote id-type %U data %U", + format_ikev2_id_type, p->rem_id.type, + format_ip4_address, p->rem_id.data); + else if (p->rem_id.type == IKEV2_ID_TYPE_ID_KEY_ID) + vlib_cli_output(vm, " remote id-type %U data 0x%U", + format_ikev2_id_type, p->rem_id.type, + format_hex_bytes, p->rem_id.data, + vec_len(p->rem_id.data)); + else + vlib_cli_output(vm, " remote id-type %U data %v", + format_ikev2_id_type, p->rem_id.type, p->rem_id.data); + } + + if (p->loc_ts.end_addr.as_u32) + vlib_cli_output(vm, " local traffic-selector addr %U - %U port %u - %u" + " protocol %u", + format_ip4_address, &p->loc_ts.start_addr, + format_ip4_address, &p->loc_ts.end_addr, + p->loc_ts.start_port, p->loc_ts.end_port, + p->loc_ts.protocol_id); + + if (p->rem_ts.end_addr.as_u32) + vlib_cli_output(vm, " remote traffic-selector addr %U - %U port %u - %u" + " protocol %u", + format_ip4_address, &p->rem_ts.start_addr, + format_ip4_address, &p->rem_ts.end_addr, + p->rem_ts.start_port, p->rem_ts.end_port, + p->rem_ts.protocol_id); + })); + /* *INDENT-ON* */ + + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (show_ikev2_profile_command, static) = { + .path = "show ikev2 profile", + .short_help = "show ikev2 profile", + .function = show_ikev2_profile_command_fn, +}; +/* *INDENT-ON* */ + +static clib_error_t * +set_ikev2_local_key_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + unformat_input_t _line_input, *line_input = &_line_input; + clib_error_t *r = 0; + u8 *data = 0; + + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "%s", &data)) + { + r = ikev2_set_local_key (vm, data); + goto done; + } + else + break; + } + + r = clib_error_return (0, "parse error: '%U'", + format_unformat_error, line_input); + +done: + vec_free (data); + unformat_free (line_input); + return r; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (set_ikev2_local_key_command, static) = { + .path = "set ikev2 local key", + .short_help = + "set ikev2 local key <file>", + .function = set_ikev2_local_key_command_fn, +}; +/* *INDENT-ON* */ + + +static clib_error_t * +ikev2_initiate_command_fn (vlib_main_t * vm, + unformat_input_t * input, vlib_cli_command_t * cmd) +{ + unformat_input_t _line_input, *line_input = &_line_input; + clib_error_t *r = 0; + u8 *name = 0; + u32 tmp1; + u64 tmp2; + + const char *valid_chars = "a-zA-Z0-9_"; + + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat + (line_input, "sa-init %U", unformat_token, valid_chars, &name)) + { + r = ikev2_initiate_sa_init (vm, name); + goto done; + } + else if (unformat (line_input, "del-child-sa %x", &tmp1)) + { + r = ikev2_initiate_delete_child_sa (vm, tmp1); + goto done; + } + else if (unformat (line_input, "del-sa %lx", &tmp2)) + { + r = ikev2_initiate_delete_ike_sa (vm, tmp2); + goto done; + } + else if (unformat (line_input, "rekey-child-sa %x", &tmp1)) + { + r = ikev2_initiate_rekey_child_sa (vm, tmp1); + goto done; + } + else + break; + } + + r = clib_error_return (0, "parse error: '%U'", + format_unformat_error, line_input); + +done: + vec_free (name); + unformat_free (line_input); + return r; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (ikev2_initiate_command, static) = { + .path = "ikev2 initiate", + .short_help = + "ikev2 initiate sa-init <profile id>\n" + "ikev2 initiate del-child-sa <child sa ispi>\n" + "ikev2 initiate del-sa <sa ispi>\n" + "ikev2 initiate rekey-child-sa <profile id> <child sa ispi>\n", + .function = ikev2_initiate_command_fn, +}; +/* *INDENT-ON* */ + + +clib_error_t * +ikev2_cli_init (vlib_main_t * vm) +{ + return 0; +} + +VLIB_INIT_FUNCTION (ikev2_cli_init); + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/plugins/ikev2/ikev2_crypto.c b/src/plugins/ikev2/ikev2_crypto.c new file mode 100644 index 00000000000..deb6d35113f --- /dev/null +++ b/src/plugins/ikev2/ikev2_crypto.c @@ -0,0 +1,1076 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <vlib/vlib.h> +#include <vnet/vnet.h> +#include <vnet/pg/pg.h> +#include <vppinfra/error.h> +#include <vnet/udp/udp.h> +#include <plugins/ikev2/ikev2.h> +#include <plugins/ikev2/ikev2_priv.h> +#include <openssl/obj_mac.h> +#include <openssl/ec.h> +#include <openssl/x509.h> +#include <openssl/pem.h> +#include <openssl/bn.h> +#include <openssl/dh.h> + +/* from RFC7296 */ +static const char modp_dh_768_prime[] = + "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" + "29024E088A67CC74020BBEA63B139B22514A08798E3404DD" + "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" + "E485B576625E7EC6F44C42E9A63A3620FFFFFFFFFFFFFFFF"; +static const char modp_dh_768_generator[] = "02"; + +static const char modp_dh_1024_prime[] = + "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" + "29024E088A67CC74020BBEA63B139B22514A08798E3404DD" + "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" + "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" + "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381" "FFFFFFFFFFFFFFFF"; +static const char modp_dh_1024_generator[] = "02"; + +/* from RFC3526 */ +static const char modp_dh_1536_prime[] = + "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" + "29024E088A67CC74020BBEA63B139B22514A08798E3404DD" + "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" + "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" + "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D" + "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F" + "83655D23DCA3AD961C62F356208552BB9ED529077096966D" + "670C354E4ABC9804F1746C08CA237327FFFFFFFFFFFFFFFF"; +static const char modp_dh_1536_generator[] = "02"; + +static const char modp_dh_2048_prime[] = + "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" + "29024E088A67CC74020BBEA63B139B22514A08798E3404DD" + "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" + "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" + "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D" + "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F" + "83655D23DCA3AD961C62F356208552BB9ED529077096966D" + "670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B" + "E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9" + "DE2BCBF6955817183995497CEA956AE515D2261898FA0510" + "15728E5A8AACAA68FFFFFFFFFFFFFFFF"; +static const char modp_dh_2048_generator[] = "02"; + +static const char modp_dh_3072_prime[] = + "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" + "29024E088A67CC74020BBEA63B139B22514A08798E3404DD" + "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" + "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" + "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D" + "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F" + "83655D23DCA3AD961C62F356208552BB9ED529077096966D" + "670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B" + "E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9" + "DE2BCBF6955817183995497CEA956AE515D2261898FA0510" + "15728E5A8AAAC42DAD33170D04507A33A85521ABDF1CBA64" + "ECFB850458DBEF0A8AEA71575D060C7DB3970F85A6E1E4C7" + "ABF5AE8CDB0933D71E8C94E04A25619DCEE3D2261AD2EE6B" + "F12FFA06D98A0864D87602733EC86A64521F2B18177B200C" + "BBE117577A615D6C770988C0BAD946E208E24FA074E5AB31" + "43DB5BFCE0FD108E4B82D120A93AD2CAFFFFFFFFFFFFFFFF"; +static const char modp_dh_3072_generator[] = "02"; + +static const char modp_dh_4096_prime[] = + "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" + "29024E088A67CC74020BBEA63B139B22514A08798E3404DD" + "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" + "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" + "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D" + "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F" + "83655D23DCA3AD961C62F356208552BB9ED529077096966D" + "670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B" + "E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9" + "DE2BCBF6955817183995497CEA956AE515D2261898FA0510" + "15728E5A8AAAC42DAD33170D04507A33A85521ABDF1CBA64" + "ECFB850458DBEF0A8AEA71575D060C7DB3970F85A6E1E4C7" + "ABF5AE8CDB0933D71E8C94E04A25619DCEE3D2261AD2EE6B" + "F12FFA06D98A0864D87602733EC86A64521F2B18177B200C" + "BBE117577A615D6C770988C0BAD946E208E24FA074E5AB31" + "43DB5BFCE0FD108E4B82D120A92108011A723C12A787E6D7" + "88719A10BDBA5B2699C327186AF4E23C1A946834B6150BDA" + "2583E9CA2AD44CE8DBBBC2DB04DE8EF92E8EFC141FBECAA6" + "287C59474E6BC05D99B2964FA090C3A2233BA186515BE7ED" + "1F612970CEE2D7AFB81BDD762170481CD0069127D5B05AA9" + "93B4EA988D8FDDC186FFB7DC90A6C08F4DF435C934063199" "FFFFFFFFFFFFFFFF"; +static const char modp_dh_4096_generator[] = "02"; + +static const char modp_dh_6144_prime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static const char modp_dh_6144_generator[] = "02"; + +static const char modp_dh_8192_prime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static const char modp_dh_8192_generator[] = "02"; + +/* from RFC5114 */ +static const char modp_dh_1024_160_prime[] = + "B10B8F96A080E01DDE92DE5EAE5D54EC52C99FBCFB06A3C6" + "9A6A9DCA52D23B616073E28675A23D189838EF1E2EE652C0" + "13ECB4AEA906112324975C3CD49B83BFACCBDD7D90C4BD70" + "98488E9C219A73724EFFD6FAE5644738FAA31A4FF55BCCC0" + "A151AF5F0DC8B4BD45BF37DF365C1A65E68CFDA76D4DA708" "DF1FB2BC2E4A4371"; +static const char modp_dh_1024_160_generator[] = + "A4D1CBD5C3FD34126765A442EFB99905F8104DD258AC507F" + "D6406CFF14266D31266FEA1E5C41564B777E690F5504F213" + "160217B4B01B886A5E91547F9E2749F4D7FBD7D3B9A92EE1" + "909D0D2263F80A76A6A24C087A091F531DBF0A0169B6A28A" + "D662A4D18E73AFA32D779D5918D08BC8858F4DCEF97C2A24" "855E6EEB22B3B2E5"; + +static const char modp_dh_2048_224_prime[] = + "AD107E1E9123A9D0D660FAA79559C51FA20D64E5683B9FD1" + "B54B1597B61D0A75E6FA141DF95A56DBAF9A3C407BA1DF15" + "EB3D688A309C180E1DE6B85A1274A0A66D3F8152AD6AC212" + "9037C9EDEFDA4DF8D91E8FEF55B7394B7AD5B7D0B6C12207" + "C9F98D11ED34DBF6C6BA0B2C8BBC27BE6A00E0A0B9C49708" + "B3BF8A317091883681286130BC8985DB1602E714415D9330" + "278273C7DE31EFDC7310F7121FD5A07415987D9ADC0A486D" + "CDF93ACC44328387315D75E198C641A480CD86A1B9E587E8" + "BE60E69CC928B2B9C52172E413042E9B23F10B0E16E79763" + "C9B53DCF4BA80A29E3FB73C16B8E75B97EF363E2FFA31F71" + "CF9DE5384E71B81C0AC4DFFE0C10E64F"; +static const char modp_dh_2048_224_generator[] = + "AC4032EF4F2D9AE39DF30B5C8FFDAC506CDEBE7B89998CAF" + "74866A08CFE4FFE3A6824A4E10B9A6F0DD921F01A70C4AFA" + "AB739D7700C29F52C57DB17C620A8652BE5E9001A8D66AD7" + "C17669101999024AF4D027275AC1348BB8A762D0521BC98A" + "E247150422EA1ED409939D54DA7460CDB5F6C6B250717CBE" + "F180EB34118E98D119529A45D6F834566E3025E316A330EF" + "BB77A86F0C1AB15B051AE3D428C8F8ACB70A8137150B8EEB" + "10E183EDD19963DDD9E263E4770589EF6AA21E7F5F2FF381" + "B539CCE3409D13CD566AFBB48D6C019181E1BCFE94B30269" + "EDFE72FE9B6AA4BD7B5A0F1C71CFFF4C19C418E1F6EC0179" + "81BC087F2A7065B384B890D3191F2BFA"; + +static const char modp_dh_2048_256_prime[] = + "87A8E61DB4B6663CFFBBD19C651959998CEEF608660DD0F2" + "5D2CEED4435E3B00E00DF8F1D61957D4FAF7DF4561B2AA30" + "16C3D91134096FAA3BF4296D830E9A7C209E0C6497517ABD" + "5A8A9D306BCF67ED91F9E6725B4758C022E0B1EF4275BF7B" + "6C5BFC11D45F9088B941F54EB1E59BB8BC39A0BF12307F5C" + "4FDB70C581B23F76B63ACAE1CAA6B7902D52526735488A0E" + "F13C6D9A51BFA4AB3AD8347796524D8EF6A167B5A41825D9" + "67E144E5140564251CCACB83E6B486F6B3CA3F7971506026" + "C0B857F689962856DED4010ABD0BE621C3A3960A54E710C3" + "75F26375D7014103A4B54330C198AF126116D2276E11715F" + "693877FAD7EF09CADB094AE91E1A1597"; +static const char modp_dh_2048_256_generator[] = + "3FB32C9B73134D0B2E77506660EDBD484CA7B18F21EF2054" + "07F4793A1A0BA12510DBC15077BE463FFF4FED4AAC0BB555" + "BE3A6C1B0C6B47B1BC3773BF7E8C6F62901228F8C28CBB18" + "A55AE31341000A650196F931C77A57F2DDF463E5E9EC144B" + "777DE62AAAB8A8628AC376D282D6ED3864E67982428EBC83" + "1D14348F6F2F9193B5045AF2767164E1DFC967C1FB3F2E55" + "A4BD1BFFE83B9C80D052B985D182EA0ADB2A3B7313D3FE14" + "C8484B1E052588B9B7D2BBD2DF016199ECD06E1557CD0915" + "B3353BBB64E0EC377FD028370DF92B52C7891428CDC67EB6" + "184B523D1DB246C32F63078490F00EF8D647D148D4795451" + "5E2327CFEF98C582664B4C0F6CC41659"; + +v8 * +ikev2_calc_prf (ikev2_sa_transform_t * tr, v8 * key, v8 * data) +{ +#if OPENSSL_VERSION_NUMBER >= 0x10100000L + HMAC_CTX *ctx; +#else + HMAC_CTX ctx; +#endif + v8 *prf; + unsigned int len = 0; + + prf = vec_new (u8, tr->key_trunc); +#if OPENSSL_VERSION_NUMBER >= 0x10100000L + ctx = HMAC_CTX_new (); + HMAC_Init_ex (ctx, key, vec_len (key), tr->md, NULL); + HMAC_Update (ctx, data, vec_len (data)); + HMAC_Final (ctx, prf, &len); +#else + HMAC_CTX_init (&ctx); + HMAC_Init_ex (&ctx, key, vec_len (key), tr->md, NULL); + HMAC_Update (&ctx, data, vec_len (data)); + HMAC_Final (&ctx, prf, &len); + HMAC_CTX_cleanup (&ctx); +#endif + ASSERT (len == tr->key_trunc); + + return prf; +} + +u8 * +ikev2_calc_prfplus (ikev2_sa_transform_t * tr, u8 * key, u8 * seed, int len) +{ + v8 *t = 0, *s = 0, *tmp = 0, *ret = 0; + u8 x = 0; + + /* prf+ (K,S) = T1 | T2 | T3 | T4 | ... + + where: + T1 = prf (K, S | 0x01) + T2 = prf (K, T1 | S | 0x02) + T3 = prf (K, T2 | S | 0x03) + T4 = prf (K, T3 | S | 0x04) + */ + + while (vec_len (ret) < len && x < 255) + { + if (t) + { + vec_append (s, t); + vec_free (t); + } + + vec_append (s, seed); + vec_add2 (s, tmp, 1); + *tmp = x + 1; + t = ikev2_calc_prf (tr, key, s); + vec_append (ret, t); + vec_free (s); + x++; + } + + vec_free (t); + + if (x == 255) + { + vec_free (ret); + } + + return ret; +} + +v8 * +ikev2_calc_integr (ikev2_sa_transform_t * tr, v8 * key, u8 * data, int len) +{ + v8 *r; +#if OPENSSL_VERSION_NUMBER >= 0x10100000L + HMAC_CTX *hctx; +#else + HMAC_CTX hctx; +#endif + unsigned int l; + + ASSERT (tr->type == IKEV2_TRANSFORM_TYPE_INTEG); + + r = vec_new (u8, tr->key_len); + + if (tr->md == EVP_sha1 ()) + { + clib_warning ("integrity checking with sha1"); + } + else if (tr->md == EVP_sha256 ()) + { + clib_warning ("integrity checking with sha256"); + } + + /* verify integrity of data */ +#if OPENSSL_VERSION_NUMBER >= 0x10100000L + hctx = HMAC_CTX_new (); + HMAC_Init_ex (hctx, key, vec_len (key), tr->md, NULL); + HMAC_Update (hctx, (const u8 *) data, len); + HMAC_Final (hctx, r, &l); +#else + HMAC_CTX_init (&hctx); + HMAC_Init_ex (&hctx, key, vec_len (key), tr->md, NULL); + HMAC_Update (&hctx, (const u8 *) data, len); + HMAC_Final (&hctx, r, &l); + HMAC_CTX_cleanup (&hctx); +#endif + + ASSERT (l == tr->key_len); + + return r; +} + +v8 * +ikev2_decrypt_data (ikev2_sa_t * sa, u8 * data, int len) +{ +#if OPENSSL_VERSION_NUMBER >= 0x10100000L + EVP_CIPHER_CTX *ctx; +#else + EVP_CIPHER_CTX ctx; +#endif + v8 *r; + int out_len = 0, block_size; + ikev2_sa_transform_t *tr_encr; + u8 *key = sa->is_initiator ? sa->sk_er : sa->sk_ei; + + tr_encr = + ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_ENCR); + block_size = tr_encr->block_size; + + /* check if data is multiplier of cipher block size */ + if (len % block_size) + { + clib_warning ("wrong data length"); + return 0; + } + +#if OPENSSL_VERSION_NUMBER >= 0x10100000L + ctx = EVP_CIPHER_CTX_new (); +#else + EVP_CIPHER_CTX_init (&ctx); +#endif + + r = vec_new (u8, len - block_size); + +#if OPENSSL_VERSION_NUMBER >= 0x10100000L + EVP_DecryptInit_ex (ctx, tr_encr->cipher, NULL, key, data); + EVP_DecryptUpdate (ctx, r, &out_len, data + block_size, len - block_size); + EVP_DecryptFinal_ex (ctx, r + out_len, &out_len); +#else + EVP_DecryptInit_ex (&ctx, tr_encr->cipher, NULL, key, data); + EVP_DecryptUpdate (&ctx, r, &out_len, data + block_size, len - block_size); + EVP_DecryptFinal_ex (&ctx, r + out_len, &out_len); +#endif + /* remove padding */ + _vec_len (r) -= r[vec_len (r) - 1] + 1; + +#if OPENSSL_VERSION_NUMBER < 0x10100000L + EVP_CIPHER_CTX_cleanup (&ctx); +#endif + return r; +} + +int +ikev2_encrypt_data (ikev2_sa_t * sa, v8 * src, u8 * dst) +{ +#if OPENSSL_VERSION_NUMBER >= 0x10100000L + EVP_CIPHER_CTX *ctx; +#else + EVP_CIPHER_CTX ctx; +#endif + int out_len; + int bs; + ikev2_sa_transform_t *tr_encr; + u8 *key = sa->is_initiator ? sa->sk_ei : sa->sk_er; + + tr_encr = + ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_ENCR); + bs = tr_encr->block_size; + + /* generate IV */ + RAND_bytes (dst, bs); + +#if OPENSSL_VERSION_NUMBER >= 0x10100000L + ctx = EVP_CIPHER_CTX_new (); + EVP_EncryptInit_ex (ctx, tr_encr->cipher, NULL, key, dst /* dst */ ); + EVP_EncryptUpdate (ctx, dst + bs, &out_len, src, vec_len (src)); +#else + EVP_CIPHER_CTX_init (&ctx); + EVP_EncryptInit_ex (&ctx, tr_encr->cipher, NULL, key, dst /* dst */ ); + EVP_EncryptUpdate (&ctx, dst + bs, &out_len, src, vec_len (src)); + EVP_CIPHER_CTX_cleanup (&ctx); +#endif + + ASSERT (vec_len (src) == out_len); + + return out_len + bs; +} + +void +ikev2_generate_dh (ikev2_sa_t * sa, ikev2_sa_transform_t * t) +{ + int r; +#if OPENSSL_VERSION_NUMBER >= 0x10100000L + BIGNUM *p = BN_new (); + BIGNUM *q = BN_new (); + BIGNUM *g = BN_new (); + BIGNUM *pub_key = BN_new (); + BIGNUM *priv_key = BN_new (); +#endif + + if (t->dh_group == IKEV2_DH_GROUP_MODP) + { + DH *dh = DH_new (); +#if OPENSSL_VERSION_NUMBER >= 0x10100000L + BN_hex2bn (&p, t->dh_p); + BN_hex2bn (&g, t->dh_g); + DH_set0_pqg (dh, p, q, g); +#else + BN_hex2bn (&dh->p, t->dh_p); + BN_hex2bn (&dh->g, t->dh_g); +#endif + DH_generate_key (dh); + + if (sa->is_initiator) + { + sa->i_dh_data = vec_new (u8, t->key_len); + sa->dh_private_key = vec_new (u8, t->key_len); +#if OPENSSL_VERSION_NUMBER >= 0x10100000L + r = BN_bn2bin (pub_key, sa->i_dh_data); + ASSERT (r == t->key_len); + r = BN_bn2bin (priv_key, sa->dh_private_key); + DH_set0_key (dh, pub_key, priv_key); +#else + r = BN_bn2bin (dh->pub_key, sa->i_dh_data); + ASSERT (r == t->key_len); + r = BN_bn2bin (dh->priv_key, sa->dh_private_key); + ASSERT (r == t->key_len); +#endif + } + else + { + sa->r_dh_data = vec_new (u8, t->key_len); +#if OPENSSL_VERSION_NUMBER >= 0x10100000L + r = BN_bn2bin (pub_key, sa->i_dh_data); + ASSERT (r == t->key_len); + DH_set0_key (dh, pub_key, NULL); +#else + r = BN_bn2bin (dh->pub_key, sa->r_dh_data); + ASSERT (r == t->key_len); +#endif + BIGNUM *ex; + sa->dh_shared_key = vec_new (u8, t->key_len); + ex = BN_bin2bn (sa->i_dh_data, vec_len (sa->i_dh_data), NULL); + r = DH_compute_key (sa->dh_shared_key, ex, dh); + ASSERT (r == t->key_len); + BN_clear_free (ex); + } + DH_free (dh); + } + else if (t->dh_group == IKEV2_DH_GROUP_ECP) + { + EC_KEY *ec = EC_KEY_new_by_curve_name (t->nid); + ASSERT (ec); + + EC_KEY_generate_key (ec); + + const EC_POINT *r_point = EC_KEY_get0_public_key (ec); + const EC_GROUP *group = EC_KEY_get0_group (ec); + BIGNUM *x = NULL, *y = NULL; + BN_CTX *bn_ctx = BN_CTX_new (); + u16 x_off, y_off, len; + EC_POINT *i_point = EC_POINT_new (group); + EC_POINT *shared_point = EC_POINT_new (group); + + x = BN_new (); + y = BN_new (); + len = t->key_len / 2; + +#if OPENSSL_VERSION_NUMBER >= 0x30000000L + EC_POINT_get_affine_coordinates (group, r_point, x, y, bn_ctx); +#else + EC_POINT_get_affine_coordinates_GFp (group, r_point, x, y, bn_ctx); +#endif + + if (sa->is_initiator) + { + sa->i_dh_data = vec_new (u8, t->key_len); + x_off = len - BN_num_bytes (x); + clib_memset (sa->i_dh_data, 0, x_off); + BN_bn2bin (x, sa->i_dh_data + x_off); + y_off = t->key_len - BN_num_bytes (y); + clib_memset (sa->i_dh_data + len, 0, y_off - len); + BN_bn2bin (y, sa->i_dh_data + y_off); + + const BIGNUM *prv = EC_KEY_get0_private_key (ec); + sa->dh_private_key = vec_new (u8, BN_num_bytes (prv)); + r = BN_bn2bin (prv, sa->dh_private_key); + ASSERT (r == BN_num_bytes (prv)); + } + else + { + sa->r_dh_data = vec_new (u8, t->key_len); + x_off = len - BN_num_bytes (x); + clib_memset (sa->r_dh_data, 0, x_off); + BN_bn2bin (x, sa->r_dh_data + x_off); + y_off = t->key_len - BN_num_bytes (y); + clib_memset (sa->r_dh_data + len, 0, y_off - len); + BN_bn2bin (y, sa->r_dh_data + y_off); + + x = BN_bin2bn (sa->i_dh_data, len, x); + y = BN_bin2bn (sa->i_dh_data + len, len, y); +#if OPENSSL_VERSION_NUMBER >= 0x30000000L + EC_POINT_set_affine_coordinates (group, i_point, x, y, bn_ctx); +#else + EC_POINT_set_affine_coordinates_GFp (group, i_point, x, y, bn_ctx); +#endif + sa->dh_shared_key = vec_new (u8, t->key_len); + EC_POINT_mul (group, shared_point, NULL, i_point, + EC_KEY_get0_private_key (ec), NULL); +#if OPENSSL_VERSION_NUMBER >= 0x30000000L + EC_POINT_get_affine_coordinates (group, shared_point, x, y, bn_ctx); +#else + EC_POINT_get_affine_coordinates_GFp (group, shared_point, x, y, + bn_ctx); +#endif + x_off = len - BN_num_bytes (x); + clib_memset (sa->dh_shared_key, 0, x_off); + BN_bn2bin (x, sa->dh_shared_key + x_off); + y_off = t->key_len - BN_num_bytes (y); + clib_memset (sa->dh_shared_key + len, 0, y_off - len); + BN_bn2bin (y, sa->dh_shared_key + y_off); + } + + EC_KEY_free (ec); + BN_free (x); + BN_free (y); + BN_CTX_free (bn_ctx); + EC_POINT_free (i_point); + EC_POINT_free (shared_point); + } +} + +void +ikev2_complete_dh (ikev2_sa_t * sa, ikev2_sa_transform_t * t) +{ + int r; +#if OPENSSL_VERSION_NUMBER >= 0x10100000L + BIGNUM *p = BN_new (); + BIGNUM *q = BN_new (); + BIGNUM *g = BN_new (); + BIGNUM *priv_key = BN_new (); +#endif + + if (t->dh_group == IKEV2_DH_GROUP_MODP) + { + DH *dh = DH_new (); +#if OPENSSL_VERSION_NUMBER >= 0x10100000L + BN_hex2bn (&p, t->dh_p); + BN_hex2bn (&g, t->dh_g); + DH_set0_pqg (dh, p, q, g); + + priv_key = + BN_bin2bn (sa->dh_private_key, vec_len (sa->dh_private_key), NULL); + DH_set0_key (dh, NULL, priv_key); +#else + BN_hex2bn (&dh->p, t->dh_p); + BN_hex2bn (&dh->g, t->dh_g); + + dh->priv_key = + BN_bin2bn (sa->dh_private_key, vec_len (sa->dh_private_key), NULL); +#endif + BIGNUM *ex; + sa->dh_shared_key = vec_new (u8, t->key_len); + ex = BN_bin2bn (sa->r_dh_data, vec_len (sa->r_dh_data), NULL); + r = DH_compute_key (sa->dh_shared_key, ex, dh); + ASSERT (r == t->key_len); + BN_clear_free (ex); + DH_free (dh); + } + else if (t->dh_group == IKEV2_DH_GROUP_ECP) + { + EC_KEY *ec = EC_KEY_new_by_curve_name (t->nid); + ASSERT (ec); + + const EC_GROUP *group = EC_KEY_get0_group (ec); + BIGNUM *x = NULL, *y = NULL; + BN_CTX *bn_ctx = BN_CTX_new (); + u16 x_off, y_off, len; + BIGNUM *prv; + + prv = + BN_bin2bn (sa->dh_private_key, vec_len (sa->dh_private_key), NULL); + EC_KEY_set_private_key (ec, prv); + + x = BN_new (); + y = BN_new (); + len = t->key_len / 2; + + x = BN_bin2bn (sa->r_dh_data, len, x); + y = BN_bin2bn (sa->r_dh_data + len, len, y); + EC_POINT *r_point = EC_POINT_new (group); +#if OPENSSL_VERSION_NUMBER >= 0x30000000L + EC_POINT_set_affine_coordinates (group, r_point, x, y, bn_ctx); +#else + EC_POINT_set_affine_coordinates_GFp (group, r_point, x, y, bn_ctx); +#endif + EC_KEY_set_public_key (ec, r_point); + + EC_POINT *i_point = EC_POINT_new (group); + EC_POINT *shared_point = EC_POINT_new (group); + + x = BN_bin2bn (sa->i_dh_data, len, x); + y = BN_bin2bn (sa->i_dh_data + len, len, y); +#if OPENSSL_VERSION_NUMBER >= 0x30000000L + EC_POINT_set_affine_coordinates (group, i_point, x, y, bn_ctx); +#else + EC_POINT_set_affine_coordinates_GFp (group, i_point, x, y, bn_ctx); +#endif + EC_POINT_mul (group, shared_point, NULL, r_point, + EC_KEY_get0_private_key (ec), NULL); +#if OPENSSL_VERSION_NUMBER >= 0x30000000L + EC_POINT_get_affine_coordinates (group, shared_point, x, y, bn_ctx); +#else + EC_POINT_get_affine_coordinates_GFp (group, shared_point, x, y, bn_ctx); +#endif + sa->dh_shared_key = vec_new (u8, t->key_len); + x_off = len - BN_num_bytes (x); + clib_memset (sa->dh_shared_key, 0, x_off); + BN_bn2bin (x, sa->dh_shared_key + x_off); + y_off = t->key_len - BN_num_bytes (y); + clib_memset (sa->dh_shared_key + len, 0, y_off - len); + BN_bn2bin (y, sa->dh_shared_key + y_off); + + EC_KEY_free (ec); + BN_free (x); + BN_free (y); + BN_free (prv); + BN_CTX_free (bn_ctx); + EC_POINT_free (i_point); + EC_POINT_free (r_point); + EC_POINT_free (shared_point); + } +} + +int +ikev2_verify_sign (EVP_PKEY * pkey, u8 * sigbuf, u8 * data) +{ +#if OPENSSL_VERSION_NUMBER >= 0x10100000L + EVP_MD_CTX *md_ctx = EVP_MD_CTX_new (); +#else + EVP_MD_CTX md_ctx; + EVP_MD_CTX_init (&md_ctx); +#endif + +#if OPENSSL_VERSION_NUMBER >= 0x10100000L + EVP_VerifyInit (md_ctx, EVP_sha1 ()); + EVP_VerifyUpdate (md_ctx, data, vec_len (data)); +#else + EVP_VerifyInit_ex (&md_ctx, EVP_sha1 (), NULL); + EVP_VerifyUpdate (&md_ctx, data, vec_len (data)); +#endif + +#if OPENSSL_VERSION_NUMBER >= 0x10100000L + return EVP_VerifyFinal (md_ctx, sigbuf, vec_len (sigbuf), pkey); +#else + return EVP_VerifyFinal (&md_ctx, sigbuf, vec_len (sigbuf), pkey); +#endif +} + +u8 * +ikev2_calc_sign (EVP_PKEY * pkey, u8 * data) +{ +#if OPENSSL_VERSION_NUMBER >= 0x10100000L + EVP_MD_CTX *md_ctx = EVP_MD_CTX_new (); +#else + EVP_MD_CTX md_ctx; +#endif + unsigned int sig_len = 0; + u8 *sign; + +#if OPENSSL_VERSION_NUMBER >= 0x10100000L + EVP_SignInit (md_ctx, EVP_sha1 ()); + EVP_SignUpdate (md_ctx, data, vec_len (data)); + /* get sign len */ + EVP_SignFinal (md_ctx, NULL, &sig_len, pkey); + sign = vec_new (u8, sig_len); + /* calc sign */ + EVP_SignFinal (md_ctx, sign, &sig_len, pkey); +#else + EVP_SignInit (&md_ctx, EVP_sha1 ()); + EVP_SignUpdate (&md_ctx, data, vec_len (data)); + /* get sign len */ + EVP_SignFinal (&md_ctx, NULL, &sig_len, pkey); + sign = vec_new (u8, sig_len); + /* calc sign */ + EVP_SignFinal (&md_ctx, sign, &sig_len, pkey); +#endif + return sign; +} + +EVP_PKEY * +ikev2_load_cert_file (u8 * file) +{ + FILE *fp; + X509 *x509; + EVP_PKEY *pkey = NULL; + + fp = fopen ((char *) file, "r"); + if (!fp) + { + clib_warning ("open %s failed", file); + goto end; + } + + x509 = PEM_read_X509 (fp, NULL, NULL, NULL); + fclose (fp); + if (x509 == NULL) + { + clib_warning ("read cert %s failed", file); + goto end; + } + + pkey = X509_get_pubkey (x509); + if (pkey == NULL) + clib_warning ("get pubkey %s failed", file); + +end: + return pkey; +} + +EVP_PKEY * +ikev2_load_key_file (u8 * file) +{ + FILE *fp; + EVP_PKEY *pkey = NULL; + + fp = fopen ((char *) file, "r"); + if (!fp) + { + clib_warning ("open %s failed", file); + goto end; + } + + pkey = PEM_read_PrivateKey (fp, NULL, NULL, NULL); + fclose (fp); + if (pkey == NULL) + clib_warning ("read %s failed", file); + +end: + return pkey; +} + +void +ikev2_crypto_init (ikev2_main_t * km) +{ + ikev2_sa_transform_t *tr; + + /* vector of supported transforms - in order of preference */ + + //Encryption + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_ENCR; + tr->encr_type = IKEV2_TRANSFORM_ENCR_TYPE_AES_CBC; + tr->key_len = 256 / 8; + tr->block_size = 128 / 8; + tr->cipher = EVP_aes_256_cbc (); + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_ENCR; + tr->encr_type = IKEV2_TRANSFORM_ENCR_TYPE_AES_CBC; + tr->key_len = 192 / 8; + tr->block_size = 128 / 8; + tr->cipher = EVP_aes_192_cbc (); + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_ENCR; + tr->encr_type = IKEV2_TRANSFORM_ENCR_TYPE_AES_CBC; + tr->key_len = 128 / 8; + tr->block_size = 128 / 8; + tr->cipher = EVP_aes_128_cbc (); + + //PRF + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_PRF; + tr->prf_type = IKEV2_TRANSFORM_PRF_TYPE_PRF_HMAC_SHA2_256; + tr->key_len = 256 / 8; + tr->key_trunc = 256 / 8; + tr->md = EVP_sha256 (); + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_PRF; + tr->prf_type = IKEV2_TRANSFORM_PRF_TYPE_PRF_HMAC_SHA2_384; + tr->key_len = 384 / 8; + tr->key_trunc = 384 / 8; + tr->md = EVP_sha384 (); + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_PRF; + tr->prf_type = IKEV2_TRANSFORM_PRF_TYPE_PRF_HMAC_SHA2_512; + tr->key_len = 512 / 8; + tr->key_trunc = 512 / 8; + tr->md = EVP_sha512 (); + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_PRF; + tr->prf_type = IKEV2_TRANSFORM_PRF_TYPE_PRF_HMAC_SHA1; + tr->key_len = 160 / 8; + tr->key_trunc = 160 / 8; + tr->md = EVP_sha1 (); + + //Integrity + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_INTEG; + tr->integ_type = IKEV2_TRANSFORM_INTEG_TYPE_AUTH_HMAC_SHA2_256_128; + tr->key_len = 256 / 8; + tr->key_trunc = 128 / 8; + tr->md = EVP_sha256 (); + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_INTEG; + tr->integ_type = IKEV2_TRANSFORM_INTEG_TYPE_AUTH_HMAC_SHA2_384_192; + tr->key_len = 384 / 8; + tr->key_trunc = 192 / 8; + tr->md = EVP_sha384 (); + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_INTEG; + tr->integ_type = IKEV2_TRANSFORM_INTEG_TYPE_AUTH_HMAC_SHA2_512_256; + tr->key_len = 512 / 8; + tr->key_trunc = 256 / 8; + tr->md = EVP_sha512 (); + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_INTEG; + tr->integ_type = IKEV2_TRANSFORM_INTEG_TYPE_AUTH_HMAC_SHA1_160; + tr->key_len = 160 / 8; + tr->key_trunc = 160 / 8; + tr->md = EVP_sha1 (); + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_INTEG; + tr->integ_type = IKEV2_TRANSFORM_INTEG_TYPE_AUTH_HMAC_SHA1_96; + tr->key_len = 160 / 8; + tr->key_trunc = 96 / 8; + tr->md = EVP_sha1 (); + + +#if defined(OPENSSL_NO_CISCO_FECDH) + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_BRAINPOOL_512; + tr->key_len = (512 * 2) / 8; + tr->nid = NID_brainpoolP512r1; + tr->dh_group = IKEV2_DH_GROUP_ECP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_BRAINPOOL_384; + tr->key_len = (384 * 2) / 8; + tr->nid = NID_brainpoolP384r1; + tr->dh_group = IKEV2_DH_GROUP_ECP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_BRAINPOOL_256; + tr->key_len = (256 * 2) / 8; + tr->nid = NID_brainpoolP256r1; + tr->dh_group = IKEV2_DH_GROUP_ECP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_BRAINPOOL_224; + tr->key_len = (224 * 2) / 8; + tr->nid = NID_brainpoolP224r1; + tr->dh_group = IKEV2_DH_GROUP_ECP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_ECP_224; + tr->key_len = (224 * 2) / 8; + tr->nid = NID_secp224r1; + tr->dh_group = IKEV2_DH_GROUP_ECP; +#endif + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_ECP_521; + tr->key_len = (528 * 2) / 8; + tr->nid = NID_secp521r1; + tr->dh_group = IKEV2_DH_GROUP_ECP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_ECP_384; + tr->key_len = (384 * 2) / 8; + tr->nid = NID_secp384r1; + tr->dh_group = IKEV2_DH_GROUP_ECP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_ECP_256; + tr->key_len = (256 * 2) / 8; + tr->nid = NID_X9_62_prime256v1; + tr->dh_group = IKEV2_DH_GROUP_ECP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_ECP_192; + tr->key_len = (192 * 2) / 8; + tr->nid = NID_X9_62_prime192v1; + tr->dh_group = IKEV2_DH_GROUP_ECP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_MODP_2048_256; + tr->key_len = 2048 / 8; + tr->dh_p = (const char *) &modp_dh_2048_256_prime; + tr->dh_g = (const char *) &modp_dh_2048_256_generator; + tr->dh_group = IKEV2_DH_GROUP_MODP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_MODP_2048_224; + tr->key_len = 2048 / 8; + tr->dh_p = (const char *) &modp_dh_2048_224_prime; + tr->dh_g = (const char *) &modp_dh_2048_224_generator; + tr->dh_group = IKEV2_DH_GROUP_MODP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_MODP_1024_160; + tr->key_len = 1024 / 8; + tr->dh_p = (const char *) &modp_dh_1024_160_prime; + tr->dh_g = (const char *) &modp_dh_1024_160_generator; + tr->dh_group = IKEV2_DH_GROUP_MODP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_MODP_8192; + tr->key_len = 8192 / 8; + tr->dh_p = (const char *) &modp_dh_8192_prime; + tr->dh_g = (const char *) &modp_dh_8192_generator; + tr->dh_group = IKEV2_DH_GROUP_MODP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_MODP_6144; + tr->key_len = 6144 / 8; + tr->dh_p = (const char *) &modp_dh_6144_prime; + tr->dh_g = (const char *) &modp_dh_6144_generator; + tr->dh_group = IKEV2_DH_GROUP_MODP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_MODP_4096; + tr->key_len = 4096 / 8; + tr->dh_p = (const char *) &modp_dh_4096_prime; + tr->dh_g = (const char *) &modp_dh_4096_generator; + tr->dh_group = IKEV2_DH_GROUP_MODP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_MODP_3072; + tr->key_len = 3072 / 8; + tr->dh_p = (const char *) &modp_dh_3072_prime; + tr->dh_g = (const char *) &modp_dh_3072_generator; + tr->dh_group = IKEV2_DH_GROUP_MODP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_MODP_2048; + tr->key_len = 2048 / 8; + tr->dh_p = (const char *) &modp_dh_2048_prime; + tr->dh_g = (const char *) &modp_dh_2048_generator; + tr->dh_group = IKEV2_DH_GROUP_MODP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_MODP_1536; + tr->key_len = 1536 / 8; + tr->dh_p = (const char *) &modp_dh_1536_prime; + tr->dh_g = (const char *) &modp_dh_1536_generator; + tr->dh_group = IKEV2_DH_GROUP_MODP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_MODP_1024; + tr->key_len = 1024 / 8; + tr->dh_p = (const char *) &modp_dh_1024_prime; + tr->dh_g = (const char *) &modp_dh_1024_generator; + tr->dh_group = IKEV2_DH_GROUP_MODP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_MODP_768; + tr->key_len = 768 / 8; + tr->dh_p = (const char *) &modp_dh_768_prime; + tr->dh_g = (const char *) &modp_dh_768_generator; + tr->dh_group = IKEV2_DH_GROUP_MODP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_ESN; + tr->esn_type = IKEV2_TRANSFORM_ESN_TYPE_ESN; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_ESN; + tr->esn_type = IKEV2_TRANSFORM_ESN_TYPE_NO_ESN; +} + + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/plugins/ikev2/ikev2_format.c b/src/plugins/ikev2/ikev2_format.c new file mode 100644 index 00000000000..2b77d7e5945 --- /dev/null +++ b/src/plugins/ikev2/ikev2_format.c @@ -0,0 +1,155 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include <vnet/vnet.h> +#include <vnet/api_errno.h> +#include <vnet/ip/ip.h> +#include <vnet/interface.h> + +#include <vnet/ipsec/ipsec.h> +#include <plugins/ikev2/ikev2.h> +#include <plugins/ikev2/ikev2_priv.h> + +u8 * +format_ikev2_sa_transform (u8 * s, va_list * args) +{ + ikev2_sa_transform_t *tr = va_arg (*args, ikev2_sa_transform_t *); + + if (!tr) + return s; + + if (tr->type >= IKEV2_TRANSFORM_NUM_TYPES) + return s; + + s = format (s, "%U:", format_ikev2_transform_type, tr->type); + + switch (tr->type) + { + case IKEV2_TRANSFORM_TYPE_ENCR: + s = format (s, "%U", format_ikev2_transform_encr_type, tr->encr_type); + break; + case IKEV2_TRANSFORM_TYPE_PRF: + s = format (s, "%U", format_ikev2_transform_prf_type, tr->prf_type); + break; + case IKEV2_TRANSFORM_TYPE_INTEG: + s = format (s, "%U", format_ikev2_transform_integ_type, tr->integ_type); + break; + case IKEV2_TRANSFORM_TYPE_DH: + s = format (s, "%U", format_ikev2_transform_dh_type, tr->dh_type); + break; + case IKEV2_TRANSFORM_TYPE_ESN: + s = format (s, "%U", format_ikev2_transform_esn_type, tr->esn_type); + break; + default: + break; + } + + if (tr->type == IKEV2_TRANSFORM_TYPE_ENCR && + tr->encr_type == IKEV2_TRANSFORM_ENCR_TYPE_AES_CBC && tr->key_len) + s = format (s, "-%u", tr->key_len * 8); + else if (vec_len (tr->attrs) == 4 && tr->attrs[0] == 0x80 + && tr->attrs[1] == 0x0e) + s = format (s, "-%u", tr->attrs[2] * 256 + tr->attrs[3]); + else if (vec_len (tr->attrs)) + s = format (s, "(unknown attr %U)", format_hex_bytes, + tr->attrs, vec_len (tr->attrs)); + + return s; +} + +#define MACRO_FORMAT(lc) \ +u8 * format_ikev2_##lc (u8 * s, va_list * args) \ +{ \ + u32 i = va_arg (*args, u32); \ + char * t = 0; \ + switch (i) { \ + foreach_ikev2_##lc \ + default: \ + return format (s, "unknown (%u)", i); \ + } \ + s = format (s, "%s", t); \ + return s; \ +} + +#define MACRO_UNFORMAT(lc) \ +uword \ +unformat_ikev2_##lc (unformat_input_t * input, \ + va_list * args) \ +{ \ + u32 * r = va_arg (*args, u32 *); \ + if (0) ; \ + foreach_ikev2_##lc \ + else \ + return 0; \ + return 1; \ +} + +#define _(v,f,str) case IKEV2_AUTH_METHOD_##f: t = str; break; +MACRO_FORMAT (auth_method) +#undef _ +#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_AUTH_METHOD_##f; + MACRO_UNFORMAT (auth_method) +#undef _ +#define _(v,f,str) case IKEV2_TRANSFORM_TYPE_##f: t = str; break; + MACRO_FORMAT (transform_type) +#undef _ +#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_TRANSFORM_TYPE_##f; + MACRO_UNFORMAT (transform_type) +#undef _ +#define _(v,f) case IKEV2_NOTIFY_MSG_##f: t = #f; break; + MACRO_FORMAT (notify_msg_type) +#undef _ +#define _(v,f,str) case IKEV2_ID_TYPE_##f: t = str; break; + MACRO_FORMAT (id_type) +#undef _ +#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_ID_TYPE_##f; + MACRO_UNFORMAT (id_type) +#undef _ +#define _(v,f,str) case IKEV2_TRANSFORM_ENCR_TYPE_##f: t = str; break; + MACRO_FORMAT (transform_encr_type) +#undef _ +#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_TRANSFORM_ENCR_TYPE_##f; + MACRO_UNFORMAT (transform_encr_type) +#undef _ +#define _(v,f,str) case IKEV2_TRANSFORM_PRF_TYPE_##f: t = str; break; + MACRO_FORMAT (transform_prf_type) +#undef _ +#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_TRANSFORM_PRF_TYPE_##f; + MACRO_UNFORMAT (transform_prf_type) +#undef _ +#define _(v,f,str) case IKEV2_TRANSFORM_INTEG_TYPE_##f: t = str; break; + MACRO_FORMAT (transform_integ_type) +#undef _ +#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_TRANSFORM_INTEG_TYPE_##f; + MACRO_UNFORMAT (transform_integ_type) +#undef _ +#define _(v,f,str) case IKEV2_TRANSFORM_DH_TYPE_##f: t = str; break; + MACRO_FORMAT (transform_dh_type) +#undef _ +#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_TRANSFORM_DH_TYPE_##f; + MACRO_UNFORMAT (transform_dh_type) +#undef _ +#define _(v,f,str) case IKEV2_TRANSFORM_ESN_TYPE_##f: t = str; break; + MACRO_FORMAT (transform_esn_type) +#undef _ +#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_TRANSFORM_ESN_TYPE_##f; + MACRO_UNFORMAT (transform_esn_type) +#undef _ +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/plugins/ikev2/ikev2_msg_enum.h b/src/plugins/ikev2/ikev2_msg_enum.h new file mode 100644 index 00000000000..63dbfafb8c0 --- /dev/null +++ b/src/plugins/ikev2/ikev2_msg_enum.h @@ -0,0 +1,28 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#ifndef included_ikev2_msg_enum_h +#define included_ikev2_msg_enum_h + +#include <vppinfra/byte_order.h> + +#define vl_msg_id(n,h) n, +typedef enum { +#include <ikev2/ikev2.api.h> + /* We'll want to know how many messages IDs we need... */ + VL_MSG_FIRST_AVAILABLE, +} vl_msg_id_t; +#undef vl_msg_id + +#endif diff --git a/src/plugins/ikev2/ikev2_payload.c b/src/plugins/ikev2/ikev2_payload.c new file mode 100644 index 00000000000..509483aa655 --- /dev/null +++ b/src/plugins/ikev2/ikev2_payload.c @@ -0,0 +1,549 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <ctype.h> + +#include <vnet/vnet.h> +#include <vnet/api_errno.h> +#include <vnet/ip/ip.h> +#include <vnet/interface.h> + +#include <vnet/ipsec/ipsec.h> +#include <plugins/ikev2/ikev2.h> +#include <plugins/ikev2/ikev2_priv.h> + +/* *INDENT-OFF* */ +typedef CLIB_PACKED (struct { + u8 nextpayload; + u8 flags; + u16 length; + u8 protocol_id; + u8 spi_size; + u16 msg_type; + u8 payload[0]; +}) ike_notify_payload_header_t; +/* *INDENT-ON* */ + +/* *INDENT-OFF* */ +typedef CLIB_PACKED (struct { + u8 ts_type; + u8 protocol_id; + u16 selector_len; + u16 start_port; + u16 end_port; + ip4_address_t start_addr; + ip4_address_t end_addr; +}) ikev2_ts_payload_entry_t; +/* *INDENT-OFF* */ + +/* *INDENT-OFF* */ +typedef CLIB_PACKED (struct { + u8 nextpayload; + u8 flags; + u16 length; + u8 num_ts; + u8 reserved[3]; + ikev2_ts_payload_entry_t ts[0]; +}) ike_ts_payload_header_t; +/* *INDENT-OFF* */ + +/* *INDENT-OFF* */ +typedef CLIB_PACKED (struct { + u8 last_or_more; + u8 reserved; + u16 proposal_len; + u8 proposal_num; + u8 protocol_id; + u8 spi_size; + u8 num_transforms; u32 spi[0]; +}) ike_sa_proposal_data_t; +/* *INDENT-OFF* */ + +/* *INDENT-OFF* */ +typedef CLIB_PACKED (struct { + u8 last_or_more; + u8 reserved; + u16 transform_len; + u8 transform_type; + u8 reserved2; + u16 transform_id; + u8 attributes[0]; +}) ike_sa_transform_data_t; +/* *INDENT-OFF* */ + +/* *INDENT-OFF* */ +typedef CLIB_PACKED (struct { + u8 nextpayload; + u8 flags; + u16 length; + u8 protocol_id; + u8 spi_size; + u16 num_of_spi; + u32 spi[0]; +}) ike_delete_payload_header_t; +/* *INDENT-OFF* */ + +static ike_payload_header_t * +ikev2_payload_add_hdr (ikev2_payload_chain_t * c, u8 payload_type, int len) +{ + ike_payload_header_t *hdr = + (ike_payload_header_t *) & c->data[c->last_hdr_off]; + u8 *tmp; + + if (c->data) + hdr->nextpayload = payload_type; + else + c->first_payload_type = payload_type; + + c->last_hdr_off = vec_len (c->data); + vec_add2 (c->data, tmp, len); + hdr = (ike_payload_header_t *) tmp; + clib_memset (hdr, 0, len); + + hdr->length = clib_host_to_net_u16 (len); + + return hdr; +} + +static void +ikev2_payload_add_data (ikev2_payload_chain_t * c, u8 * data) +{ + u16 len; + ike_payload_header_t *hdr; + + vec_append (c->data, data); + hdr = (ike_payload_header_t *) & c->data[c->last_hdr_off]; + len = clib_net_to_host_u16 (hdr->length); + hdr->length = clib_host_to_net_u16 (len + vec_len (data)); +} + +void +ikev2_payload_add_notify (ikev2_payload_chain_t * c, u16 msg_type, u8 * data) +{ + ikev2_payload_add_notify_2(c, msg_type, data, 0); +} + +void +ikev2_payload_add_notify_2 (ikev2_payload_chain_t * c, u16 msg_type, + u8 * data, ikev2_notify_t * notify) +{ + ike_notify_payload_header_t *n; + + n = + (ike_notify_payload_header_t *) ikev2_payload_add_hdr (c, + IKEV2_PAYLOAD_NOTIFY, + sizeof (*n)); + n->msg_type = clib_host_to_net_u16 (msg_type); + if (notify) + { + n->protocol_id = notify->protocol_id; + if (notify->spi) + { + n->spi_size = 4; + } + } + ikev2_payload_add_data (c, data); +} + +void +ikev2_payload_add_sa (ikev2_payload_chain_t * c, + ikev2_sa_proposal_t * proposals) +{ + ike_payload_header_t *ph; + ike_sa_proposal_data_t *prop; + ike_sa_transform_data_t *tr; + ikev2_sa_proposal_t *p; + ikev2_sa_transform_t *t; + + u8 *tmp; + u8 *pr_data = 0; + u8 *tr_data = 0; + + ikev2_payload_add_hdr (c, IKEV2_PAYLOAD_SA, sizeof (*ph)); + + vec_foreach (p, proposals) + { + int spi_size = (p->protocol_id == IKEV2_PROTOCOL_ESP) ? 4 : 0; + pr_data = vec_new (u8, sizeof (ike_sa_proposal_data_t) + spi_size); + prop = (ike_sa_proposal_data_t *) pr_data; + prop->last_or_more = proposals - p + 1 < vec_len (proposals) ? 2 : 0; + prop->protocol_id = p->protocol_id; + prop->proposal_num = p->proposal_num; + prop->spi_size = spi_size; + prop->num_transforms = vec_len (p->transforms); + + if (spi_size) + prop->spi[0] = clib_host_to_net_u32 (p->spi); + + DBG_PLD ("proposal num %u protocol_id %u last_or_more %u spi_size %u%s%U", + prop->proposal_num, prop->protocol_id, prop->last_or_more, + prop->spi_size, prop->spi_size ? " spi_data " : "", + format_hex_bytes, prop->spi, prop->spi_size); + + vec_foreach (t, p->transforms) + { + vec_add2 (tr_data, tmp, sizeof (*tr) + vec_len (t->attrs)); + tr = (ike_sa_transform_data_t *) tmp; + tr->last_or_more = + ((t - p->transforms) + 1 < vec_len (p->transforms)) ? 3 : 0; + tr->transform_type = t->type; + tr->transform_id = clib_host_to_net_u16 (t->transform_id); + tr->transform_len = + clib_host_to_net_u16 (sizeof (*tr) + vec_len (t->attrs)); + + if (vec_len (t->attrs) > 0) + clib_memcpy_fast (tr->attributes, t->attrs, vec_len (t->attrs)); + + DBG_PLD + ("transform type %U transform_id %u last_or_more %u attr_size %u%s%U", + format_ikev2_transform_type, tr->transform_type, t->transform_id, + tr->last_or_more, vec_len (t->attrs), + vec_len (t->attrs) ? " attrs " : "", format_hex_bytes, + tr->attributes, vec_len (t->attrs)); + } + + prop->proposal_len = + clib_host_to_net_u16 (vec_len (tr_data) + vec_len (pr_data)); + ikev2_payload_add_data (c, pr_data); + ikev2_payload_add_data (c, tr_data); + vec_free (pr_data); + vec_free (tr_data); + } +} + +void +ikev2_payload_add_ke (ikev2_payload_chain_t * c, u16 dh_group, u8 * dh_data) +{ + ike_ke_payload_header_t *ke; + ke = (ike_ke_payload_header_t *) ikev2_payload_add_hdr (c, IKEV2_PAYLOAD_KE, + sizeof (*ke)); + + ke->dh_group = clib_host_to_net_u16 (dh_group); + ikev2_payload_add_data (c, dh_data); +} + +void +ikev2_payload_add_nonce (ikev2_payload_chain_t * c, u8 * nonce) +{ + ikev2_payload_add_hdr (c, IKEV2_PAYLOAD_NONCE, + sizeof (ike_payload_header_t)); + ikev2_payload_add_data (c, nonce); +} + +void +ikev2_payload_add_id (ikev2_payload_chain_t * c, ikev2_id_t * id, u8 type) +{ + ike_id_payload_header_t *idp; + idp = + (ike_id_payload_header_t *) ikev2_payload_add_hdr (c, type, + sizeof (*idp)); + + idp->id_type = id->type; + ikev2_payload_add_data (c, id->data); +} + +void +ikev2_payload_add_delete (ikev2_payload_chain_t * c, ikev2_delete_t * d) +{ + ike_delete_payload_header_t *dp; + u16 num_of_spi = vec_len (d); + ikev2_delete_t *d2; + dp = + (ike_delete_payload_header_t *) ikev2_payload_add_hdr (c, + IKEV2_PAYLOAD_DELETE, + sizeof (*dp)); + + if (d[0].protocol_id == IKEV2_PROTOCOL_IKE) + { + dp->protocol_id = 1; + } + else + { + dp->protocol_id = d[0].protocol_id; + dp->spi_size = 4; + dp->num_of_spi = clib_host_to_net_u16 (num_of_spi); + vec_foreach (d2, d) + { + u8 *data = vec_new (u8, 4); + u32 spi = clib_host_to_net_u32 (d2->spi); + clib_memcpy (data, &spi, 4); + ikev2_payload_add_data (c, data); + vec_free (data); + } + } +} + +void +ikev2_payload_add_auth (ikev2_payload_chain_t * c, ikev2_auth_t * auth) +{ + ike_auth_payload_header_t *ap; + ap = + (ike_auth_payload_header_t *) ikev2_payload_add_hdr (c, + IKEV2_PAYLOAD_AUTH, + sizeof (*ap)); + + ap->auth_method = auth->method; + ikev2_payload_add_data (c, auth->data); +} + +void +ikev2_payload_add_ts (ikev2_payload_chain_t * c, ikev2_ts_t * ts, u8 type) +{ + ike_ts_payload_header_t *tsh; + ikev2_ts_t *ts2; + u8 *data = 0, *tmp; + + tsh = + (ike_ts_payload_header_t *) ikev2_payload_add_hdr (c, type, + sizeof (*tsh)); + tsh->num_ts = vec_len (ts); + + vec_foreach (ts2, ts) + { + ASSERT (ts2->ts_type == 7); /*TS_IPV4_ADDR_RANGE */ + ikev2_ts_payload_entry_t *entry; + vec_add2 (data, tmp, sizeof (*entry)); + entry = (ikev2_ts_payload_entry_t *) tmp; + entry->ts_type = ts2->ts_type; + entry->protocol_id = ts2->protocol_id; + entry->selector_len = clib_host_to_net_u16 (16); + entry->start_port = clib_host_to_net_u16 (ts2->start_port); + entry->end_port = clib_host_to_net_u16 (ts2->end_port); + entry->start_addr.as_u32 = ts2->start_addr.as_u32; + entry->end_addr.as_u32 = ts2->end_addr.as_u32; + } + + ikev2_payload_add_data (c, data); + vec_free (data); +} + +void +ikev2_payload_chain_add_padding (ikev2_payload_chain_t * c, int bs) +{ + u8 *tmp __attribute__ ((unused)); + u8 pad_len = (vec_len (c->data) / bs + 1) * bs - vec_len (c->data); + vec_add2 (c->data, tmp, pad_len); + c->data[vec_len (c->data) - 1] = pad_len - 1; +} + +ikev2_sa_proposal_t * +ikev2_parse_sa_payload (ike_payload_header_t * ikep) +{ + ikev2_sa_proposal_t *v = 0; + ikev2_sa_proposal_t *proposal; + ikev2_sa_transform_t *transform; + + u32 plen = clib_net_to_host_u16 (ikep->length); + + ike_sa_proposal_data_t *sap; + int proposal_ptr = 0; + + do + { + sap = (ike_sa_proposal_data_t *) & ikep->payload[proposal_ptr]; + int i; + int transform_ptr; + + DBG_PLD ("proposal num %u len %u last_or_more %u id %u " + "spi_size %u num_transforms %u", + sap->proposal_num, clib_net_to_host_u16 (sap->proposal_len), + sap->last_or_more, sap->protocol_id, sap->spi_size, + sap->num_transforms); + + /* IKE proposal should not have SPI */ + if (sap->protocol_id == IKEV2_PROTOCOL_IKE && sap->spi_size != 0) + goto data_corrupted; + + /* IKE proposal should not have SPI */ + if (sap->protocol_id == IKEV2_PROTOCOL_ESP && sap->spi_size != 4) + goto data_corrupted; + + transform_ptr = proposal_ptr + sizeof (*sap) + sap->spi_size; + + vec_add2 (v, proposal, 1); + proposal->proposal_num = sap->proposal_num; + proposal->protocol_id = sap->protocol_id; + + if (sap->spi_size == 4) + { + proposal->spi = clib_net_to_host_u32 (sap->spi[0]); + } + + for (i = 0; i < sap->num_transforms; i++) + { + ike_sa_transform_data_t *tr = + (ike_sa_transform_data_t *) & ikep->payload[transform_ptr]; + u16 tlen = clib_net_to_host_u16 (tr->transform_len); + + if (tlen < sizeof (*tr)) + goto data_corrupted; + + vec_add2 (proposal->transforms, transform, 1); + + transform->type = tr->transform_type; + transform->transform_id = clib_net_to_host_u16 (tr->transform_id); + if (tlen > sizeof (*tr)) + vec_add (transform->attrs, tr->attributes, tlen - sizeof (*tr)); + + DBG_PLD + ("transform num %u len %u last_or_more %u type %U id %u%s%U", i, + tlen, tr->last_or_more, format_ikev2_sa_transform, transform, + clib_net_to_host_u16 (tr->transform_id), + tlen > sizeof (*tr) ? " attrs " : "", format_hex_bytes, + tr->attributes, tlen - sizeof (*tr)); + + transform_ptr += tlen; + } + + proposal_ptr += clib_net_to_host_u16 (sap->proposal_len); + } + while (proposal_ptr < (plen - sizeof (*ikep)) && sap->last_or_more == 2); + + /* data validation */ + if (proposal_ptr != (plen - sizeof (*ikep)) || sap->last_or_more) + goto data_corrupted; + + return v; + +data_corrupted: + DBG_PLD ("SA payload data corrupted"); + ikev2_sa_free_proposal_vector (&v); + return 0; +} + +ikev2_ts_t * +ikev2_parse_ts_payload (ike_payload_header_t * ikep) +{ + ike_ts_payload_header_t *tsp = (ike_ts_payload_header_t *) ikep; + ikev2_ts_t *r = 0, *ts; + u8 i; + + for (i = 0; i < tsp->num_ts; i++) + { + if (tsp->ts[i].ts_type != 7) /* TS_IPV4_ADDR_RANGE */ + { + DBG_PLD ("unsupported TS type received (%u)", tsp->ts[i].ts_type); + continue; + } + + vec_add2 (r, ts, 1); + ts->ts_type = tsp->ts[i].ts_type; + ts->protocol_id = tsp->ts[i].protocol_id; + ts->start_port = tsp->ts[i].start_port; + ts->end_port = tsp->ts[i].end_port; + ts->start_addr.as_u32 = tsp->ts[i].start_addr.as_u32; + ts->end_addr.as_u32 = tsp->ts[i].end_addr.as_u32; + } + return r; +} + +ikev2_notify_t * +ikev2_parse_notify_payload (ike_payload_header_t * ikep) +{ + ike_notify_payload_header_t *n = (ike_notify_payload_header_t *) ikep; + u32 plen = clib_net_to_host_u16 (ikep->length); + ikev2_notify_t *r = 0; + u32 spi; + + DBG_PLD ("msg_type %U len %u%s%U", + format_ikev2_notify_msg_type, clib_net_to_host_u16 (n->msg_type), + plen, plen > sizeof (*n) ? " data " : "", + format_hex_bytes, n->payload, plen - sizeof (*n)); + + r = vec_new (ikev2_notify_t, 1); + r->msg_type = clib_net_to_host_u16 (n->msg_type); + r->protocol_id = n->protocol_id; + + if (n->spi_size == 4) + { + clib_memcpy (&spi, n->payload, n->spi_size); + r->spi = clib_net_to_host_u32 (spi); + DBG_PLD ("spi %lx", r->spi); + } + else if (n->spi_size == 0) + { + r->spi = 0; + } + else + { + clib_warning ("invalid SPI Size %d", n->spi_size); + } + + if (plen > (sizeof (*n) + n->spi_size)) + { + vec_add (r->data, n->payload + n->spi_size, + plen - sizeof (*n) - n->spi_size); + } + + return r; +} + +void +ikev2_parse_vendor_payload (ike_payload_header_t * ikep) +{ + u32 plen = clib_net_to_host_u16 (ikep->length); + int i; + int is_string = 1; + + for (i = 0; i < plen - 4; i++) + if (!isprint (ikep->payload[i])) + is_string = 0; + + DBG_PLD ("len %u data %s:%U", + plen, + is_string ? "string" : "hex", + is_string ? format_ascii_bytes : format_hex_bytes, + ikep->payload, plen - sizeof (*ikep)); +} + +ikev2_delete_t * +ikev2_parse_delete_payload (ike_payload_header_t * ikep) +{ + ike_delete_payload_header_t *d = (ike_delete_payload_header_t *) ikep; + u32 plen = clib_net_to_host_u16 (ikep->length); + ikev2_delete_t *r = 0, *del; + u16 num_of_spi = clib_net_to_host_u16 (d->num_of_spi); + u16 i = 0; + + DBG_PLD ("protocol_id %u spi_size %u num_of_spi %u len %u%s%U", + d->protocol_id, d->spi_size, num_of_spi, + plen, plen > sizeof (d) ? " data " : "", + format_hex_bytes, d->spi, plen - sizeof (*d)); + + if (d->protocol_id == IKEV2_PROTOCOL_IKE) + { + r = vec_new (ikev2_delete_t, 1); + r->protocol_id = 1; + } + else + { + r = vec_new (ikev2_delete_t, num_of_spi); + vec_foreach (del, r) + { + del->protocol_id = d->protocol_id; + del->spi = clib_net_to_host_u32 (d->spi[i++]); + } + } + + return r; +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/plugins/ikev2/ikev2_priv.h b/src/plugins/ikev2/ikev2_priv.h new file mode 100644 index 00000000000..cfdc24f797a --- /dev/null +++ b/src/plugins/ikev2/ikev2_priv.h @@ -0,0 +1,364 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#ifndef __included_ikev2_priv_h__ +#define __included_ikev2_priv_h__ + +#include <vnet/vnet.h> +#include <vnet/ip/ip.h> +#include <vnet/ethernet/ethernet.h> + +#include <plugins/ikev2/ikev2.h> + +#include <vppinfra/hash.h> +#include <vppinfra/elog.h> +#include <vppinfra/error.h> + +#include <openssl/rand.h> +#include <openssl/dh.h> +#include <openssl/hmac.h> +#include <openssl/evp.h> + +#define IKEV2_DEBUG_PAYLOAD 1 + +#if IKEV2_DEBUG_PAYLOAD == 1 +#define DBG_PLD(my_args...) clib_warning(my_args) +#else +#define DBG_PLD(my_args...) +#endif + +typedef enum +{ + IKEV2_STATE_UNKNOWN, + IKEV2_STATE_SA_INIT, + IKEV2_STATE_DELETED, + IKEV2_STATE_AUTH_FAILED, + IKEV2_STATE_AUTHENTICATED, + IKEV2_STATE_NOTIFY_AND_DELETE, + IKEV2_STATE_TS_UNACCEPTABLE, + IKEV2_STATE_NO_PROPOSAL_CHOSEN, +} ikev2_state_t; + +typedef struct +{ + ikev2_auth_method_t method:8; + u8 *data; + u8 hex; /* hex encoding of the shared secret */ + EVP_PKEY *key; +} ikev2_auth_t; + +typedef enum +{ + IKEV2_DH_GROUP_MODP = 0, + IKEV2_DH_GROUP_ECP = 1, +} ikev2_dh_group_t; + +typedef struct +{ + ikev2_transform_type_t type; + union + { + u16 transform_id; + ikev2_transform_encr_type_t encr_type:16; + ikev2_transform_prf_type_t prf_type:16; + ikev2_transform_integ_type_t integ_type:16; + ikev2_transform_dh_type_t dh_type:16; + ikev2_transform_esn_type_t esn_type:16; + }; + u8 *attrs; + u16 key_len; + u16 key_trunc; + u16 block_size; + u8 dh_group; + int nid; + const char *dh_p; + const char *dh_g; + const void *md; + const void *cipher; +} ikev2_sa_transform_t; + +typedef struct +{ + u8 proposal_num; + ikev2_protocol_id_t protocol_id:8; + u32 spi; + ikev2_sa_transform_t *transforms; +} ikev2_sa_proposal_t; + +typedef struct +{ + u8 ts_type; + u8 protocol_id; + u16 selector_len; + u16 start_port; + u16 end_port; + ip4_address_t start_addr; + ip4_address_t end_addr; +} ikev2_ts_t; + +typedef struct +{ + u32 sw_if_index; + ip4_address_t ip4; +} ikev2_responder_t; + +typedef struct +{ + ikev2_transform_encr_type_t crypto_alg; + ikev2_transform_integ_type_t integ_alg; + ikev2_transform_dh_type_t dh_type; + u32 crypto_key_size; +} ikev2_transforms_set; + + +typedef struct +{ + ikev2_id_type_t type:8; + u8 *data; +} ikev2_id_t; + +typedef struct +{ + /* sa proposals vectors */ + ikev2_sa_proposal_t *i_proposals; + ikev2_sa_proposal_t *r_proposals; + + /* Traffic Selectors */ + ikev2_ts_t *tsi; + ikev2_ts_t *tsr; + + /* keys */ + u8 *sk_ai; + u8 *sk_ar; + u8 *sk_ei; + u8 *sk_er; + + /* lifetime data */ + f64 time_to_expiration; + u8 is_expired; + i8 rekey_retries; +} ikev2_child_sa_t; + +typedef struct +{ + u8 protocol_id; + u32 spi; /*for ESP and AH SPI size is 4, for IKE size is 0 */ +} ikev2_delete_t; + +typedef struct +{ + u8 protocol_id; + u32 spi; + u32 ispi; + ikev2_sa_proposal_t *i_proposal; + ikev2_sa_proposal_t *r_proposal; + ikev2_ts_t *tsi; + ikev2_ts_t *tsr; +} ikev2_rekey_t; + +typedef struct +{ + u16 msg_type; + u8 protocol_id; + u32 spi; + u8 *data; +} ikev2_notify_t; + +typedef struct +{ + u8 *name; + u8 is_enabled; + + ikev2_auth_t auth; + ikev2_id_t loc_id; + ikev2_id_t rem_id; + ikev2_ts_t loc_ts; + ikev2_ts_t rem_ts; + ikev2_responder_t responder; + ikev2_transforms_set ike_ts; + ikev2_transforms_set esp_ts; + u64 lifetime; + u64 lifetime_maxdata; + u32 lifetime_jitter; + u32 handover; +} ikev2_profile_t; + +typedef struct +{ + ikev2_state_t state; + u8 unsupported_cp; + u8 initial_contact; + ip4_address_t iaddr; + ip4_address_t raddr; + u64 ispi; + u64 rspi; + u8 *i_nonce; + u8 *r_nonce; + + /* DH data */ + u16 dh_group; + u8 *dh_shared_key; + u8 *dh_private_key; + u8 *i_dh_data; + u8 *r_dh_data; + + /* sa proposals vectors */ + ikev2_sa_proposal_t *i_proposals; + ikev2_sa_proposal_t *r_proposals; + + /* keys */ + u8 *sk_d; + u8 *sk_ai; + u8 *sk_ar; + u8 *sk_ei; + u8 *sk_er; + u8 *sk_pi; + u8 *sk_pr; + + /* auth */ + ikev2_auth_t i_auth; + ikev2_auth_t r_auth; + + /* ID */ + ikev2_id_t i_id; + ikev2_id_t r_id; + + /* pending deletes */ + ikev2_delete_t *del; + + /* pending rekeyings */ + ikev2_rekey_t *rekey; + + /* packet data */ + u8 *last_sa_init_req_packet_data; + u8 *last_sa_init_res_packet_data; + + /* retransmit */ + u32 last_msg_id; + u8 *last_res_packet_data; + + u8 is_initiator; + u32 last_init_msg_id; + ikev2_profile_t *profile; + + ikev2_child_sa_t *childs; +} ikev2_sa_t; + + +typedef struct +{ + /* pool of IKEv2 Security Associations */ + ikev2_sa_t *sas; + + /* hash */ + uword *sa_by_rspi; +} ikev2_main_per_thread_data_t; + +typedef struct +{ + /* pool of IKEv2 profiles */ + ikev2_profile_t *profiles; + + /* vector of supported transform types */ + ikev2_sa_transform_t *supported_transforms; + + /* hash */ + mhash_t profile_index_by_name; + + /* local private key */ + EVP_PKEY *pkey; + + /* convenience */ + vlib_main_t *vlib_main; + vnet_main_t *vnet_main; + + /* pool of IKEv2 Security Associations created in initiator mode */ + ikev2_sa_t *sais; + /* hash */ + uword *sa_by_ispi; + + ikev2_main_per_thread_data_t *per_thread_data; + + /* API message ID base */ + u16 msg_id_base; +} ikev2_main_t; + +extern ikev2_main_t ikev2_main; + +void ikev2_sa_free_proposal_vector (ikev2_sa_proposal_t ** v); +ikev2_sa_transform_t *ikev2_sa_get_td_for_type (ikev2_sa_proposal_t * p, + ikev2_transform_type_t type); + +/* ikev2_crypto.c */ +v8 *ikev2_calc_prf (ikev2_sa_transform_t * tr, v8 * key, v8 * data); +u8 *ikev2_calc_prfplus (ikev2_sa_transform_t * tr, u8 * key, u8 * seed, + int len); +v8 *ikev2_calc_integr (ikev2_sa_transform_t * tr, v8 * key, u8 * data, + int len); +v8 *ikev2_decrypt_data (ikev2_sa_t * sa, u8 * data, int len); +int ikev2_encrypt_data (ikev2_sa_t * sa, v8 * src, u8 * dst); +void ikev2_generate_dh (ikev2_sa_t * sa, ikev2_sa_transform_t * t); +void ikev2_complete_dh (ikev2_sa_t * sa, ikev2_sa_transform_t * t); +int ikev2_verify_sign (EVP_PKEY * pkey, u8 * sigbuf, u8 * data); +u8 *ikev2_calc_sign (EVP_PKEY * pkey, u8 * data); +EVP_PKEY *ikev2_load_cert_file (u8 * file); +EVP_PKEY *ikev2_load_key_file (u8 * file); +void ikev2_crypto_init (ikev2_main_t * km); + +/* ikev2_payload.c */ +typedef struct +{ + u8 first_payload_type; + u16 last_hdr_off; + u8 *data; +} ikev2_payload_chain_t; + +#define ikev2_payload_new_chain(V) vec_validate (V, 0) +#define ikev2_payload_destroy_chain(V) do { \ + vec_free((V)->data); \ + vec_free(V); \ +} while (0) + +void ikev2_payload_add_notify (ikev2_payload_chain_t * c, u16 msg_type, + u8 * data); +void ikev2_payload_add_notify_2 (ikev2_payload_chain_t * c, u16 msg_type, + u8 * data, ikev2_notify_t * notify); +void ikev2_payload_add_sa (ikev2_payload_chain_t * c, + ikev2_sa_proposal_t * proposals); +void ikev2_payload_add_ke (ikev2_payload_chain_t * c, u16 dh_group, + u8 * dh_data); +void ikev2_payload_add_nonce (ikev2_payload_chain_t * c, u8 * nonce); +void ikev2_payload_add_id (ikev2_payload_chain_t * c, ikev2_id_t * id, + u8 type); +void ikev2_payload_add_auth (ikev2_payload_chain_t * c, ikev2_auth_t * auth); +void ikev2_payload_add_ts (ikev2_payload_chain_t * c, ikev2_ts_t * ts, + u8 type); +void ikev2_payload_add_delete (ikev2_payload_chain_t * c, ikev2_delete_t * d); +void ikev2_payload_chain_add_padding (ikev2_payload_chain_t * c, int bs); +void ikev2_parse_vendor_payload (ike_payload_header_t * ikep); +ikev2_sa_proposal_t *ikev2_parse_sa_payload (ike_payload_header_t * ikep); +ikev2_ts_t *ikev2_parse_ts_payload (ike_payload_header_t * ikep); +ikev2_delete_t *ikev2_parse_delete_payload (ike_payload_header_t * ikep); +ikev2_notify_t *ikev2_parse_notify_payload (ike_payload_header_t * ikep); + +#endif /* __included_ikev2_priv_h__ */ + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/plugins/ikev2/ikev2_test.c b/src/plugins/ikev2/ikev2_test.c new file mode 100644 index 00000000000..68c50684824 --- /dev/null +++ b/src/plugins/ikev2/ikev2_test.c @@ -0,0 +1,861 @@ +/* + *------------------------------------------------------------------ + * api_format.c + * + * Copyright (c) 2014-2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + *------------------------------------------------------------------ + */ + +#include <vat/vat.h> +#include <vlibapi/api.h> +#include <vlibmemory/api.h> +#include <vppinfra/error.h> +#include <plugins/ikev2/ikev2.h> + +#define __plugin_msg_base ikev2_test_main.msg_id_base +#include <vlibapi/vat_helper_macros.h> + +/* Declare message IDs */ +#include <ikev2/ikev2_msg_enum.h> + +#define vl_typedefs /* define message structures */ +#include <ikev2/ikev2.api.h> +#undef vl_typedefs + +/* declare message handlers for each api */ + +#define vl_endianfun /* define message structures */ +#include <ikev2/ikev2.api.h> +#undef vl_endianfun + +/* instantiate all the print functions we know about */ +#define vl_print(handle, ...) +#define vl_printfun +#include <ikev2/ikev2.api.h> +#undef vl_printfun + +/* Get the API version number. */ +#define vl_api_version(n,v) static u32 api_version=(v); +#include <ikev2/ikev2.api.h> +#undef vl_api_version + +typedef struct +{ + /* API message ID base */ + u16 msg_id_base; + vat_main_t *vat_main; +} ikev2_test_main_t; + +ikev2_test_main_t ikev2_test_main; + +uword +unformat_ikev2_auth_method (unformat_input_t * input, va_list * args) +{ + u32 *r = va_arg (*args, u32 *); + + if (0); +#define _(v,f,s) else if (unformat (input, s)) *r = IKEV2_AUTH_METHOD_##f; + foreach_ikev2_auth_method +#undef _ + else + return 0; + return 1; +} + +uword +unformat_ikev2_id_type (unformat_input_t * input, va_list * args) +{ + u32 *r = va_arg (*args, u32 *); + + if (0); +#define _(v,f,s) else if (unformat (input, s)) *r = IKEV2_ID_TYPE_##f; + foreach_ikev2_id_type +#undef _ + else + return 0; + return 1; +} + +/* + * Generate boilerplate reply handlers, which + * dig the return value out of the xxx_reply_t API message, + * stick it into vam->retval, and set vam->result_ready + * + * Could also do this by pointing N message decode slots at + * a single function, but that could break in subtle ways. + */ + +#define foreach_standard_reply_retval_handler \ +_(ikev2_profile_add_del_reply) \ +_(ikev2_profile_set_auth_reply) \ +_(ikev2_profile_set_id_reply) \ +_(ikev2_profile_set_ts_reply) \ +_(ikev2_set_local_key_reply) \ +_(ikev2_set_responder_reply) \ +_(ikev2_set_ike_transforms_reply) \ +_(ikev2_set_esp_transforms_reply) \ +_(ikev2_set_sa_lifetime_reply) \ +_(ikev2_initiate_sa_init_reply) \ +_(ikev2_initiate_del_ike_sa_reply) \ +_(ikev2_initiate_del_child_sa_reply) \ +_(ikev2_initiate_rekey_child_sa_reply) + +#define _(n) \ + static void vl_api_##n##_t_handler \ + (vl_api_##n##_t * mp) \ + { \ + vat_main_t * vam = ikev2_test_main.vat_main; \ + i32 retval = ntohl(mp->retval); \ + if (vam->async_mode) { \ + vam->async_errors += (retval < 0); \ + } else { \ + vam->retval = retval; \ + vam->result_ready = 1; \ + } \ + } +foreach_standard_reply_retval_handler; +#undef _ + +/* + * Table of message reply handlers, must include boilerplate handlers + * we just generated + */ + +#define foreach_vpe_api_reply_msg \ +_(IKEV2_PROFILE_ADD_DEL_REPLY, ikev2_profile_add_del_reply) \ +_(IKEV2_PROFILE_SET_AUTH_REPLY, ikev2_profile_set_auth_reply) \ +_(IKEV2_PROFILE_SET_ID_REPLY, ikev2_profile_set_id_reply) \ +_(IKEV2_PROFILE_SET_TS_REPLY, ikev2_profile_set_ts_reply) \ +_(IKEV2_SET_LOCAL_KEY_REPLY, ikev2_set_local_key_reply) \ +_(IKEV2_SET_RESPONDER_REPLY, ikev2_set_responder_reply) \ +_(IKEV2_SET_IKE_TRANSFORMS_REPLY, ikev2_set_ike_transforms_reply) \ +_(IKEV2_SET_ESP_TRANSFORMS_REPLY, ikev2_set_esp_transforms_reply) \ +_(IKEV2_SET_SA_LIFETIME_REPLY, ikev2_set_sa_lifetime_reply) \ +_(IKEV2_INITIATE_SA_INIT_REPLY, ikev2_initiate_sa_init_reply) \ +_(IKEV2_INITIATE_DEL_IKE_SA_REPLY, ikev2_initiate_del_ike_sa_reply) \ +_(IKEV2_INITIATE_DEL_CHILD_SA_REPLY, ikev2_initiate_del_child_sa_reply) \ +_(IKEV2_INITIATE_REKEY_CHILD_SA_REPLY, ikev2_initiate_rekey_child_sa_reply) + + +static int +api_ikev2_profile_add_del (vat_main_t * vam) +{ + unformat_input_t *i = vam->input; + vl_api_ikev2_profile_add_del_t *mp; + u8 is_add = 1; + u8 *name = 0; + int ret; + + const char *valid_chars = "a-zA-Z0-9_"; + + while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT) + { + if (unformat (i, "del")) + is_add = 0; + else if (unformat (i, "name %U", unformat_token, valid_chars, &name)) + vec_add1 (name, 0); + else + { + errmsg ("parse error '%U'", format_unformat_error, i); + return -99; + } + } + + if (!vec_len (name)) + { + errmsg ("profile name must be specified"); + return -99; + } + + if (vec_len (name) > 64) + { + errmsg ("profile name too long"); + return -99; + } + + M (IKEV2_PROFILE_ADD_DEL, mp); + + clib_memcpy (mp->name, name, vec_len (name)); + mp->is_add = is_add; + vec_free (name); + + S (mp); + W (ret); + return ret; +} + +static int +api_ikev2_profile_set_auth (vat_main_t * vam) +{ + unformat_input_t *i = vam->input; + vl_api_ikev2_profile_set_auth_t *mp; + u8 *name = 0; + u8 *data = 0; + u32 auth_method = 0; + u8 is_hex = 0; + int ret; + + const char *valid_chars = "a-zA-Z0-9_"; + + while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT) + { + if (unformat (i, "name %U", unformat_token, valid_chars, &name)) + vec_add1 (name, 0); + else if (unformat (i, "auth_method %U", + unformat_ikev2_auth_method, &auth_method)) + ; + else if (unformat (i, "auth_data 0x%U", unformat_hex_string, &data)) + is_hex = 1; + else if (unformat (i, "auth_data %v", &data)) + ; + else + { + errmsg ("parse error '%U'", format_unformat_error, i); + return -99; + } + } + + if (!vec_len (name)) + { + errmsg ("profile name must be specified"); + return -99; + } + + if (vec_len (name) > 64) + { + errmsg ("profile name too long"); + return -99; + } + + if (!vec_len (data)) + { + errmsg ("auth_data must be specified"); + return -99; + } + + if (!auth_method) + { + errmsg ("auth_method must be specified"); + return -99; + } + + M (IKEV2_PROFILE_SET_AUTH, mp); + + mp->is_hex = is_hex; + mp->auth_method = (u8) auth_method; + mp->data_len = vec_len (data); + clib_memcpy (mp->name, name, vec_len (name)); + clib_memcpy (mp->data, data, vec_len (data)); + vec_free (name); + vec_free (data); + + S (mp); + W (ret); + return ret; +} + +static int +api_ikev2_profile_set_id (vat_main_t * vam) +{ + unformat_input_t *i = vam->input; + vl_api_ikev2_profile_set_id_t *mp; + u8 *name = 0; + u8 *data = 0; + u8 is_local = 0; + u32 id_type = 0; + ip4_address_t ip4; + int ret; + + const char *valid_chars = "a-zA-Z0-9_"; + + while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT) + { + if (unformat (i, "name %U", unformat_token, valid_chars, &name)) + vec_add1 (name, 0); + else if (unformat (i, "id_type %U", unformat_ikev2_id_type, &id_type)) + ; + else if (unformat (i, "id_data %U", unformat_ip4_address, &ip4)) + { + data = vec_new (u8, 4); + clib_memcpy (data, ip4.as_u8, 4); + } + else if (unformat (i, "id_data 0x%U", unformat_hex_string, &data)) + ; + else if (unformat (i, "id_data %v", &data)) + ; + else if (unformat (i, "local")) + is_local = 1; + else if (unformat (i, "remote")) + is_local = 0; + else + { + errmsg ("parse error '%U'", format_unformat_error, i); + return -99; + } + } + + if (!vec_len (name)) + { + errmsg ("profile name must be specified"); + return -99; + } + + if (vec_len (name) > 64) + { + errmsg ("profile name too long"); + return -99; + } + + if (!vec_len (data)) + { + errmsg ("id_data must be specified"); + return -99; + } + + if (!id_type) + { + errmsg ("id_type must be specified"); + return -99; + } + + M (IKEV2_PROFILE_SET_ID, mp); + + mp->is_local = is_local; + mp->id_type = (u8) id_type; + mp->data_len = vec_len (data); + clib_memcpy (mp->name, name, vec_len (name)); + clib_memcpy (mp->data, data, vec_len (data)); + vec_free (name); + vec_free (data); + + S (mp); + W (ret); + return ret; +} + +static int +api_ikev2_profile_set_ts (vat_main_t * vam) +{ + unformat_input_t *i = vam->input; + vl_api_ikev2_profile_set_ts_t *mp; + u8 *name = 0; + u8 is_local = 0; + u32 proto = 0, start_port = 0, end_port = (u32) ~ 0; + ip4_address_t start_addr, end_addr; + + const char *valid_chars = "a-zA-Z0-9_"; + int ret; + + start_addr.as_u32 = 0; + end_addr.as_u32 = (u32) ~ 0; + + while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT) + { + if (unformat (i, "name %U", unformat_token, valid_chars, &name)) + vec_add1 (name, 0); + else if (unformat (i, "protocol %d", &proto)) + ; + else if (unformat (i, "start_port %d", &start_port)) + ; + else if (unformat (i, "end_port %d", &end_port)) + ; + else + if (unformat (i, "start_addr %U", unformat_ip4_address, &start_addr)) + ; + else if (unformat (i, "end_addr %U", unformat_ip4_address, &end_addr)) + ; + else if (unformat (i, "local")) + is_local = 1; + else if (unformat (i, "remote")) + is_local = 0; + else + { + errmsg ("parse error '%U'", format_unformat_error, i); + return -99; + } + } + + if (!vec_len (name)) + { + errmsg ("profile name must be specified"); + return -99; + } + + if (vec_len (name) > 64) + { + errmsg ("profile name too long"); + return -99; + } + + M (IKEV2_PROFILE_SET_TS, mp); + + mp->is_local = is_local; + mp->proto = (u8) proto; + mp->start_port = (u16) start_port; + mp->end_port = (u16) end_port; + mp->start_addr = start_addr.as_u32; + mp->end_addr = end_addr.as_u32; + clib_memcpy (mp->name, name, vec_len (name)); + vec_free (name); + + S (mp); + W (ret); + return ret; +} + +static int +api_ikev2_set_local_key (vat_main_t * vam) +{ + unformat_input_t *i = vam->input; + vl_api_ikev2_set_local_key_t *mp; + u8 *file = 0; + int ret; + + while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT) + { + if (unformat (i, "file %v", &file)) + vec_add1 (file, 0); + else + { + errmsg ("parse error '%U'", format_unformat_error, i); + return -99; + } + } + + if (!vec_len (file)) + { + errmsg ("RSA key file must be specified"); + return -99; + } + + if (vec_len (file) > 256) + { + errmsg ("file name too long"); + return -99; + } + + M (IKEV2_SET_LOCAL_KEY, mp); + + clib_memcpy (mp->key_file, file, vec_len (file)); + vec_free (file); + + S (mp); + W (ret); + return ret; +} + +static int +api_ikev2_set_responder (vat_main_t * vam) +{ + unformat_input_t *i = vam->input; + vl_api_ikev2_set_responder_t *mp; + int ret; + u8 *name = 0; + u32 sw_if_index = ~0; + ip4_address_t address; + + const char *valid_chars = "a-zA-Z0-9_"; + + while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT) + { + if (unformat + (i, "%U interface %d address %U", unformat_token, valid_chars, + &name, &sw_if_index, unformat_ip4_address, &address)) + vec_add1 (name, 0); + else + { + errmsg ("parse error '%U'", format_unformat_error, i); + return -99; + } + } + + if (!vec_len (name)) + { + errmsg ("profile name must be specified"); + return -99; + } + + if (vec_len (name) > 64) + { + errmsg ("profile name too long"); + return -99; + } + + M (IKEV2_SET_RESPONDER, mp); + + clib_memcpy (mp->name, name, vec_len (name)); + vec_free (name); + + mp->sw_if_index = sw_if_index; + clib_memcpy (mp->address, &address, sizeof (address)); + + S (mp); + W (ret); + return ret; +} + +static int +api_ikev2_set_ike_transforms (vat_main_t * vam) +{ + unformat_input_t *i = vam->input; + vl_api_ikev2_set_ike_transforms_t *mp; + int ret; + u8 *name = 0; + u32 crypto_alg, crypto_key_size, integ_alg, dh_group; + + const char *valid_chars = "a-zA-Z0-9_"; + + while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT) + { + if (unformat (i, "%U %d %d %d %d", unformat_token, valid_chars, &name, + &crypto_alg, &crypto_key_size, &integ_alg, &dh_group)) + vec_add1 (name, 0); + else + { + errmsg ("parse error '%U'", format_unformat_error, i); + return -99; + } + } + + if (!vec_len (name)) + { + errmsg ("profile name must be specified"); + return -99; + } + + if (vec_len (name) > 64) + { + errmsg ("profile name too long"); + return -99; + } + + M (IKEV2_SET_IKE_TRANSFORMS, mp); + + clib_memcpy (mp->name, name, vec_len (name)); + vec_free (name); + mp->crypto_alg = crypto_alg; + mp->crypto_key_size = crypto_key_size; + mp->integ_alg = integ_alg; + mp->dh_group = dh_group; + + S (mp); + W (ret); + return ret; +} + + +static int +api_ikev2_set_esp_transforms (vat_main_t * vam) +{ + unformat_input_t *i = vam->input; + vl_api_ikev2_set_esp_transforms_t *mp; + int ret; + u8 *name = 0; + u32 crypto_alg, crypto_key_size, integ_alg, dh_group; + + const char *valid_chars = "a-zA-Z0-9_"; + + while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT) + { + if (unformat (i, "%U %d %d %d %d", unformat_token, valid_chars, &name, + &crypto_alg, &crypto_key_size, &integ_alg, &dh_group)) + vec_add1 (name, 0); + else + { + errmsg ("parse error '%U'", format_unformat_error, i); + return -99; + } + } + + if (!vec_len (name)) + { + errmsg ("profile name must be specified"); + return -99; + } + + if (vec_len (name) > 64) + { + errmsg ("profile name too long"); + return -99; + } + + M (IKEV2_SET_ESP_TRANSFORMS, mp); + + clib_memcpy (mp->name, name, vec_len (name)); + vec_free (name); + mp->crypto_alg = crypto_alg; + mp->crypto_key_size = crypto_key_size; + mp->integ_alg = integ_alg; + mp->dh_group = dh_group; + + S (mp); + W (ret); + return ret; +} + +static int +api_ikev2_set_sa_lifetime (vat_main_t * vam) +{ + unformat_input_t *i = vam->input; + vl_api_ikev2_set_sa_lifetime_t *mp; + int ret; + u8 *name = 0; + u64 lifetime, lifetime_maxdata; + u32 lifetime_jitter, handover; + + const char *valid_chars = "a-zA-Z0-9_"; + + while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT) + { + if (unformat (i, "%U %lu %u %u %lu", unformat_token, valid_chars, &name, + &lifetime, &lifetime_jitter, &handover, + &lifetime_maxdata)) + vec_add1 (name, 0); + else + { + errmsg ("parse error '%U'", format_unformat_error, i); + return -99; + } + } + + if (!vec_len (name)) + { + errmsg ("profile name must be specified"); + return -99; + } + + if (vec_len (name) > 64) + { + errmsg ("profile name too long"); + return -99; + } + + M (IKEV2_SET_SA_LIFETIME, mp); + + clib_memcpy (mp->name, name, vec_len (name)); + vec_free (name); + mp->lifetime = lifetime; + mp->lifetime_jitter = lifetime_jitter; + mp->handover = handover; + mp->lifetime_maxdata = lifetime_maxdata; + + S (mp); + W (ret); + return ret; +} + +static int +api_ikev2_initiate_sa_init (vat_main_t * vam) +{ + unformat_input_t *i = vam->input; + vl_api_ikev2_initiate_sa_init_t *mp; + int ret; + u8 *name = 0; + + const char *valid_chars = "a-zA-Z0-9_"; + + while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT) + { + if (unformat (i, "%U", unformat_token, valid_chars, &name)) + vec_add1 (name, 0); + else + { + errmsg ("parse error '%U'", format_unformat_error, i); + return -99; + } + } + + if (!vec_len (name)) + { + errmsg ("profile name must be specified"); + return -99; + } + + if (vec_len (name) > 64) + { + errmsg ("profile name too long"); + return -99; + } + + M (IKEV2_INITIATE_SA_INIT, mp); + + clib_memcpy (mp->name, name, vec_len (name)); + vec_free (name); + + S (mp); + W (ret); + return ret; +} + +static int +api_ikev2_initiate_del_ike_sa (vat_main_t * vam) +{ + unformat_input_t *i = vam->input; + vl_api_ikev2_initiate_del_ike_sa_t *mp; + int ret; + u64 ispi; + + + while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT) + { + if (unformat (i, "%lx", &ispi)) + ; + else + { + errmsg ("parse error '%U'", format_unformat_error, i); + return -99; + } + } + + M (IKEV2_INITIATE_DEL_IKE_SA, mp); + + mp->ispi = ispi; + + S (mp); + W (ret); + return ret; +} + +static int +api_ikev2_initiate_del_child_sa (vat_main_t * vam) +{ + unformat_input_t *i = vam->input; + vl_api_ikev2_initiate_del_child_sa_t *mp; + int ret; + u32 ispi; + + + while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT) + { + if (unformat (i, "%x", &ispi)) + ; + else + { + errmsg ("parse error '%U'", format_unformat_error, i); + return -99; + } + } + + M (IKEV2_INITIATE_DEL_CHILD_SA, mp); + + mp->ispi = ispi; + + S (mp); + W (ret); + return ret; +} + +static int +api_ikev2_initiate_rekey_child_sa (vat_main_t * vam) +{ + unformat_input_t *i = vam->input; + vl_api_ikev2_initiate_rekey_child_sa_t *mp; + int ret; + u32 ispi; + + + while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT) + { + if (unformat (i, "%x", &ispi)) + ; + else + { + errmsg ("parse error '%U'", format_unformat_error, i); + return -99; + } + } + + M (IKEV2_INITIATE_REKEY_CHILD_SA, mp); + + mp->ispi = ispi; + + S (mp); + W (ret); + return ret; +} + + +/* List of API message constructors, CLI names map to api_xxx */ +#define foreach_vpe_api_msg \ +_(ikev2_profile_add_del, "name <profile_name> [del]") \ +_(ikev2_profile_set_auth, "name <profile_name> auth_method <method>\n" \ + "(auth_data 0x<data> | auth_data <data>)") \ +_(ikev2_profile_set_id, "name <profile_name> id_type <type>\n" \ + "(id_data 0x<data> | id_data <data>) (local|remote)") \ +_(ikev2_profile_set_ts, "name <profile_name> protocol <proto>\n" \ + "start_port <port> end_port <port> start_addr <ip4> end_addr <ip4>\n" \ + "(local|remote)") \ +_(ikev2_set_local_key, "file <absolute_file_path>") \ +_(ikev2_set_responder, "<profile_name> interface <interface> address <addr>") \ +_(ikev2_set_ike_transforms, "<profile_name> <crypto alg> <key size> <integrity alg> <DH group>") \ +_(ikev2_set_esp_transforms, "<profile_name> <crypto alg> <key size> <integrity alg> <DH group>") \ +_(ikev2_set_sa_lifetime, "<profile_name> <seconds> <jitter> <handover> <max bytes>") \ +_(ikev2_initiate_sa_init, "<profile_name>") \ +_(ikev2_initiate_del_ike_sa, "<ispi>") \ +_(ikev2_initiate_del_child_sa, "<ispi>") \ +_(ikev2_initiate_rekey_child_sa, "<ispi>") + +static void +ikev2_vat_api_hookup (vat_main_t * vam) +{ + ikev2_test_main_t *sm = &ikev2_test_main; + /* Hook up handlers for replies from the data plane plug-in */ +#define _(N,n) \ + vl_msg_api_set_handlers((VL_API_##N + sm->msg_id_base), \ + #n, \ + vl_api_##n##_t_handler, \ + vl_noop_handler, \ + vl_api_##n##_t_endian, \ + vl_api_##n##_t_print, \ + sizeof(vl_api_##n##_t), 1); + foreach_vpe_api_reply_msg; +#undef _ + + /* API messages we can send */ +#define _(n,h) hash_set_mem (vam->function_by_name, #n, api_##n); + foreach_vpe_api_msg; +#undef _ + + /* Help strings */ +#define _(n,h) hash_set_mem (vam->help_by_name, #n, h); + foreach_vpe_api_msg; +#undef _ +} + +clib_error_t * +vat_plugin_register (vat_main_t * vam) +{ + ikev2_test_main_t *sm = &ikev2_test_main; + u8 *name; + + sm->vat_main = vam; + + name = format (0, "ikev2_%08x%c", api_version, 0); + sm->msg_id_base = vl_client_get_first_plugin_msg_id ((char *) name); + + if (sm->msg_id_base != (u16) ~ 0) + ikev2_vat_api_hookup (vam); + + vec_free (name); + + return 0; +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |