diff options
Diffstat (limited to 'vnet/vnet/ipsec/ikev2.c')
-rw-r--r-- | vnet/vnet/ipsec/ikev2.c | 2418 |
1 files changed, 1242 insertions, 1176 deletions
diff --git a/vnet/vnet/ipsec/ikev2.c b/vnet/vnet/ipsec/ikev2.c index 8455c1263d6..dd00c9edef3 100644 --- a/vnet/vnet/ipsec/ikev2.c +++ b/vnet/vnet/ipsec/ikev2.c @@ -22,28 +22,30 @@ #include <vnet/ipsec/ikev2.h> #include <vnet/ipsec/ikev2_priv.h> -static int ikev2_delete_tunnel_interface(vnet_main_t * vnm, - ikev2_sa_t *sa, - ikev2_child_sa_t * child); +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 { +typedef struct +{ u32 next_index; u32 sw_if_index; } ikev2_trace_t; -static u8 * format_ikev2_trace (u8 * s, va_list * args) +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 *); + 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); + t->sw_if_index, t->next_index); return s; } @@ -57,259 +59,264 @@ _(IKE_REQ_RETRANSMIT, "IKE request retransmit") \ _(IKE_REQ_IGNORE, "IKE request ignore (old msgid)") \ _(NOT_IKEV2, "Non IKEv2 packets received") -typedef enum { +typedef enum +{ #define _(sym,str) IKEV2_ERROR_##sym, foreach_ikev2_error #undef _ - IKEV2_N_ERROR, + IKEV2_N_ERROR, } ikev2_error_t; -static char * ikev2_error_strings[] = { +static char *ikev2_error_strings[] = { #define _(sym,string) string, foreach_ikev2_error #undef _ }; -typedef enum { +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_find_transform_data (ikev2_sa_transform_t * t) { - ikev2_main_t * km = &ikev2_main; - ikev2_sa_transform_t * td; + ikev2_main_t *km = &ikev2_main; + ikev2_sa_transform_t *td; - vec_foreach(td, km->supported_transforms) - { - if (td->type != t->type) - continue; + vec_foreach (td, km->supported_transforms) + { + if (td->type != t->type) + continue; - if (td->transform_id != t->transform_id) - 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 (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; - } + 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_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; + 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; + 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); + (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); + (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_add2 (rv, proposal, 1); - vec_foreach(transform, proposal->transforms) - { - if ((1 << transform->type) & bitmap) - continue; + vec_foreach (proposal, proposals) + { + u8 bitmap = 0; + if (proposal->protocol_id != prot_id) + continue; - if (ikev2_find_transform_data(transform)) - { - bitmap |= 1 << transform->type; - vec_add2(rv->transforms, new_t, 1); - clib_memcpy(new_t, transform, sizeof(*new_t)); - new_t->attrs = vec_dup(transform->attrs); - } - } + 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 (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); + 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); - } - } + 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); + 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_get_td_for_type (ikev2_sa_proposal_t * p, + ikev2_transform_type_t type) { - ikev2_sa_transform_t * t; + ikev2_sa_transform_t *t; if (!p) return 0; - vec_foreach(t, p->transforms) - { - if (t->type == type) - return ikev2_find_transform_data(t); - } + 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) +ikev2_sa_get_child (ikev2_sa_t * sa, u32 spi, ikev2_protocol_id_t prot_id) { - ikev2_child_sa_t * c; - vec_foreach(c, sa->childs) - { - if (c->i_proposals[0].spi == spi && c->i_proposals[0].protocol_id == prot_id) - return c; - } + ikev2_child_sa_t *c; + vec_foreach (c, sa->childs) + { + if (c->i_proposals[0].spi == spi + && c->i_proposals[0].protocol_id == prot_id) + return c; + } return 0; } void -ikev2_sa_free_proposal_vector(ikev2_sa_proposal_t ** v) +ikev2_sa_free_proposal_vector (ikev2_sa_proposal_t ** v) { - ikev2_sa_proposal_t * p; - ikev2_sa_transform_t * t; + ikev2_sa_proposal_t *p; + ikev2_sa_transform_t *t; if (!*v) - return; + return; - vec_foreach(p, *v) { - vec_foreach(t, p->transforms) { - vec_free(t->attrs); + vec_foreach (p, *v) + { + vec_foreach (t, p->transforms) + { + vec_free (t->attrs); } - vec_free(p->transforms); + vec_free (p->transforms); } - vec_free(*v); + vec_free (*v); }; static void -ikev2_sa_free_all_child_sa(ikev2_child_sa_t ** childs) +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); - } + 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); + vec_free (*childs); } static void -ikev2_sa_del_child_sa(ikev2_sa_t * sa, ikev2_child_sa_t * child) +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); + 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) +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); - - 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); + vec_free (sa->i_nonce); + vec_free (sa->i_dh_data); + vec_free (sa->dh_shared_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); + EVP_PKEY_free (sa->r_auth.key); - vec_free(sa->del); + vec_free (sa->del); - ikev2_sa_free_all_child_sa(&sa->childs); + ikev2_sa_free_all_child_sa (&sa->childs); } static void -ikev2_delete_sa(ikev2_sa_t *sa) +ikev2_delete_sa (ikev2_sa_t * sa) { - ikev2_main_t * km = &ikev2_main; - u32 cpu_index = os_get_cpu_number(); - uword * p; + ikev2_main_t *km = &ikev2_main; + u32 cpu_index = os_get_cpu_number (); + uword *p; - ikev2_sa_free_all_vec(sa); + ikev2_sa_free_all_vec (sa); - p = hash_get(km->per_thread_data[cpu_index].sa_by_rspi, sa->rspi); + p = hash_get (km->per_thread_data[cpu_index].sa_by_rspi, sa->rspi); if (p) { - hash_unset(km->per_thread_data[cpu_index].sa_by_rspi, sa->rspi); - pool_put(km->per_thread_data[cpu_index].sas, sa); + hash_unset (km->per_thread_data[cpu_index].sa_by_rspi, sa->rspi); + pool_put (km->per_thread_data[cpu_index].sas, sa); } } static void -ikev2_generate_sa_init_data(ikev2_sa_t *sa) +ikev2_generate_sa_init_data (ikev2_sa_t * sa) { - ikev2_sa_transform_t * t = 0, * t2; - ikev2_main_t * km = &ikev2_main; + ikev2_sa_transform_t *t = 0, *t2; + ikev2_main_t *km = &ikev2_main; if (sa->dh_group == IKEV2_TRANSFORM_DH_TYPE_NONE) { @@ -317,299 +324,311 @@ ikev2_generate_sa_init_data(ikev2_sa_t *sa) } /* 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; - } - } + 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)); + 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 rspi */ - RAND_bytes((u8 *) &sa->rspi, 8); + 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); + 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); + ikev2_generate_dh (sa, t); } static void -ikev2_calc_keys(ikev2_sa_t *sa) +ikev2_calc_keys (ikev2_sa_t * sa) { - u8 * tmp; + 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)); + 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); + 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 */ + 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); + 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(sa->sk_d, keymat + pos, tr_prf->key_trunc); + sa->sk_d = vec_new (u8, tr_prf->key_trunc); + clib_memcpy (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(sa->sk_ai, keymat + pos, tr_integ->key_len); + sa->sk_ai = vec_new (u8, tr_integ->key_len); + clib_memcpy (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(sa->sk_ar, keymat + pos, tr_integ->key_len); + sa->sk_ar = vec_new (u8, tr_integ->key_len); + clib_memcpy (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(sa->sk_ei, keymat + pos, tr_encr->key_len); + sa->sk_ei = vec_new (u8, tr_encr->key_len); + clib_memcpy (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(sa->sk_er, keymat + pos, tr_encr->key_len); + sa->sk_er = vec_new (u8, tr_encr->key_len); + clib_memcpy (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(sa->sk_pi, keymat + pos, tr_prf->key_len); + sa->sk_pi = vec_new (u8, tr_prf->key_len); + clib_memcpy (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(sa->sk_pr, keymat + pos, tr_prf->key_len); + sa->sk_pr = vec_new (u8, tr_prf->key_len); + clib_memcpy (sa->sk_pr, keymat + pos, tr_prf->key_len); pos += tr_prf->key_len; - vec_free(keymat); + vec_free (keymat); } static void -ikev2_calc_child_keys(ikev2_sa_t *sa, ikev2_child_sa_t * child) +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); + 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; + 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); + 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(child->sk_ei, keymat + pos, ctr_encr->key_len); + child->sk_ei = vec_new (u8, ctr_encr->key_len); + clib_memcpy (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(child->sk_ai, keymat + pos, ctr_integ->key_len); + child->sk_ai = vec_new (u8, ctr_integ->key_len); + clib_memcpy (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(child->sk_er, keymat + pos, ctr_encr->key_len); + child->sk_er = vec_new (u8, ctr_encr->key_len); + clib_memcpy (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(child->sk_ar, keymat + pos, ctr_integ->key_len); + child->sk_ar = vec_new (u8, ctr_integ->key_len); + clib_memcpy (child->sk_ar, keymat + pos, ctr_integ->key_len); pos += ctr_integ->key_len; - ASSERT(pos == len); + ASSERT (pos == len); - vec_free(keymat); + vec_free (keymat); } static void -ikev2_process_sa_init_req(vlib_main_t * vm, ikev2_sa_t *sa, ike_header_t * ike) +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); + 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); + 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->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; + vec_free (sa->last_sa_init_req_packet_data); + vec_add (sa->last_sa_init_req_packet_data, ike, len); - 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; - } - } + 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; - } + payload = ikep->nextpayload; + p += plen; + } - ikev2_set_state(sa, IKEV2_STATE_SA_INIT); + ikev2_set_state (sa, IKEV2_STATE_SA_INIT); } static u8 * -ikev2_decrypt_sk_payload(ikev2_sa_t * sa, ike_header_t * ike, u8 * payload) +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; + 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); + 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) + *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); + ikep = (ike_payload_header_t *) & ike->payload[p]; + plen = clib_net_to_host_u16 (ikep->length); - if (plen < sizeof(*ikep)) - return 0; + if (plen < sizeof (*ikep)) + return 0; if (*payload == IKEV2_PAYLOAD_SK) - { - clib_warning("received IKEv2 payload SK, len %u", plen - 4); - last_payload = *payload; - } + { + 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; - } + { + 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; - } + if (last_payload != IKEV2_PAYLOAD_SK) + { + clib_warning ("Last payload must be SK"); + return 0; + } - hmac = ikev2_calc_integr(tr_integ, sa->sk_ai, (u8 *) ike, - len - tr_integ->key_trunc); + hmac = ikev2_calc_integr (tr_integ, sa->sk_ai, (u8 *) ike, + len - tr_integ->key_trunc); - plen = plen - sizeof(*ikep) - tr_integ->key_trunc; + plen = plen - sizeof (*ikep) - tr_integ->key_trunc; - if (memcmp(hmac, &ikep->payload[plen], tr_integ->key_trunc)) + if (memcmp (hmac, &ikep->payload[plen], tr_integ->key_trunc)) { - clib_warning("message integrity check failed"); - vec_free(hmac); + clib_warning ("message integrity check failed"); + vec_free (hmac); return 0; } - vec_free(hmac); + vec_free (hmac); - return ikev2_decrypt_data(sa, ikep->payload, plen); + 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 cpu_index = os_get_cpu_number(); + ikev2_main_t *km = &ikev2_main; + ikev2_sa_t *tmp; + u32 i, *delete = 0; + ikev2_child_sa_t *c; + u32 cpu_index = os_get_cpu_number (); if (!sa->initial_contact) return; /* find old IKE SAs with the same authenticated identity */ + /* *INDENT-OFF* */ pool_foreach (tmp, km->per_thread_data[cpu_index].sas, ({ if (tmp->i_id.type != sa->i_id.type || vec_len(tmp->i_id.data) != vec_len(sa->i_id.data) || @@ -619,297 +638,302 @@ ikev2_initial_contact_cleanup (ikev2_sa_t * sa) if (sa->rspi != tmp->rspi) vec_add1(delete, tmp - km->per_thread_data[cpu_index].sas); })); + /* *INDENT-ON* */ - for (i = 0; i < vec_len(delete); i++) + for (i = 0; i < vec_len (delete); i++) { - tmp = pool_elt_at_index(km->per_thread_data[cpu_index].sas, delete[i]); - vec_foreach(c, tmp->childs) - ikev2_delete_tunnel_interface(km->vnet_main, tmp, c); - ikev2_delete_sa(tmp); + tmp = pool_elt_at_index (km->per_thread_data[cpu_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); + 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_process_auth_req (vlib_main_t * vm, ikev2_sa_t * sa, ike_header_t * ike) { - ikev2_child_sa_t * first_child_sa; + ikev2_child_sa_t *first_child_sa; int p = 0; - u32 len = clib_net_to_host_u32(ike->length); + u32 len = clib_net_to_host_u32 (ike->length); u8 payload = ike->nextpayload; - u8 * plaintext = 0; + u8 *plaintext = 0; - ike_payload_header_t * ikep; + 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); + 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); + ikev2_calc_keys (sa); - plaintext = ikev2_decrypt_sk_payload(sa, ike, &payload); + plaintext = ikev2_decrypt_sk_payload (sa, ike, &payload); if (!plaintext) { if (sa->unsupported_cp) - ikev2_set_state(sa, IKEV2_STATE_NOTIFY_AND_DELETE); + ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE); goto cleanup_and_exit; } /* create 1st child SA */ - ikev2_sa_free_all_child_sa(&sa->childs); - vec_add2(sa->childs, first_child_sa, 1); + 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) + 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)); - 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_AUTH) /* 39 */ - { - ike_auth_payload_header_t * a = (ike_auth_payload_header_t *) ikep; - - 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); - } + 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)); + 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_AUTH) /* 39 */ + { + ike_auth_payload_header_t *a = (ike_auth_payload_header_t *) ikep; + + 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; - } - } + { + 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); + vec_free (plaintext); } static void -ikev2_process_informational_req(vlib_main_t * vm, ikev2_sa_t *sa, ike_header_t * ike) +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); + u32 len = clib_net_to_host_u32 (ike->length); u8 payload = ike->nextpayload; - u8 * plaintext = 0; + u8 *plaintext = 0; - ike_payload_header_t * ikep; + 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); + 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); + 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) + 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); - } + 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; - } - } + { + 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); + vec_free (plaintext); } static void -ikev2_process_create_child_sa_req(vlib_main_t * vm, ikev2_sa_t *sa, ike_header_t * ike) +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); + u32 len = clib_net_to_host_u32 (ike->length); u8 payload = ike->nextpayload; - u8 * plaintext = 0; + u8 *plaintext = 0; u8 rekeying = 0; u8 i_nonce[IKEV2_NONCE_SIZE]; - ike_payload_header_t * ikep; + 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); + 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) + while (p < vec_len (plaintext) && payload != IKEV2_PAYLOAD_NONE) { - ikep = (ike_payload_header_t *) &plaintext[p]; - plen = clib_net_to_host_u16(ikep->length); + 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 (plen < sizeof (ike_payload_header_t)) + goto cleanup_and_exit; else if (payload == IKEV2_PAYLOAD_SA) - { - proposal = ikev2_parse_sa_payload(ikep); - } + { + 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; - } - } + { + 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); - } + { + sa->del = ikev2_parse_delete_payload (ikep); + } else if (payload == IKEV2_PAYLOAD_VENDOR) - { - ikev2_parse_vendor_payload(ikep); - } + { + ikev2_parse_vendor_payload (ikep); + } else if (payload == IKEV2_PAYLOAD_NONCE) - { - clib_memcpy(i_nonce, ikep->payload, plen - sizeof(*ikep)); - } + { + clib_memcpy (i_nonce, ikep->payload, plen - sizeof (*ikep)); + } else if (payload == IKEV2_PAYLOAD_TSI) - { - tsi = ikev2_parse_ts_payload(ikep); - } + { + tsi = ikev2_parse_ts_payload (ikep); + } else if (payload == IKEV2_PAYLOAD_TSR) - { - tsr = ikev2_parse_ts_payload(ikep); - } + { + 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; - } - } + { + 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; @@ -917,46 +941,48 @@ ikev2_process_create_child_sa_req(vlib_main_t * vm, ikev2_sa_t *sa, ike_header_t if (rekeying) { - ikev2_rekey_t * rekey; - child_sa = ikev2_sa_get_child(sa, n->spi, n->protocol_id); + ikev2_rekey_t *rekey; + child_sa = ikev2_sa_get_child (sa, n->spi, n->protocol_id); if (!child_sa) - { - clib_warning("child SA spi %lx not found", n->spi); - goto cleanup_and_exit; - } - vec_add2(sa->rekey, rekey, 1); + { + 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->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, i_nonce, IKEV2_NONCE_SIZE); + vec_free (sa->i_nonce); + vec_add (sa->i_nonce, i_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); + 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); + vec_free (plaintext); + vec_free (n); } static u8 * -ikev2_sa_generate_authmsg(ikev2_sa_t *sa, int is_responder) +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; + 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); + tr_prf = + ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_PRF); if (is_responder) { @@ -973,22 +999,22 @@ ikev2_sa_generate_authmsg(ikev2_sa_t *sa, int is_responder) packet_data = sa->last_sa_init_req_packet_data; } - data = vec_new(u8, 4); + data = vec_new (u8, 4); data[0] = id->type; - vec_append(data, id->data); + 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); + 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) +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 && @@ -1000,12 +1026,13 @@ ikev2_ts_cmp(ikev2_ts_t * ts1, ikev2_ts_t * ts2) } static void -ikev2_sa_match_ts(ikev2_sa_t *sa) +ikev2_sa_match_ts (ikev2_sa_t * sa) { - ikev2_main_t * km = &ikev2_main; - ikev2_profile_t * p; - ikev2_ts_t * ts, * tsi = 0, * tsr = 0; + ikev2_main_t *km = &ikev2_main; + ikev2_profile_t *p; + ikev2_ts_t *ts, *tsi = 0, *tsr = 0; + /* *INDENT-OFF* */ pool_foreach (p, km->profiles, ({ /* check id */ @@ -1034,44 +1061,48 @@ ikev2_sa_match_ts(ikev2_sa_t *sa) break; })); + /* *INDENT-ON* */ if (tsi && tsr) { - vec_free(sa->childs[0].tsi); - vec_free(sa->childs[0].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); + vec_free (tsi); + vec_free (tsr); + ikev2_set_state (sa, IKEV2_STATE_TS_UNACCEPTABLE); } } static void -ikev2_sa_auth(ikev2_sa_t *sa) +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; + 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); + 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)) + 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); + 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); + key_pad = format (0, "%s", IKEV2_KEY_PAD); + authmsg = ikev2_sa_generate_authmsg (sa, 0); + /* *INDENT-OFF* */ pool_foreach (p, km->profiles, ({ /* check id */ @@ -1114,56 +1145,58 @@ ikev2_sa_auth(ikev2_sa_t *sa) vec_free(auth); vec_free(psk); })); + /* *INDENT-ON* */ - vec_free(authmsg); + vec_free (authmsg); if (sa->state == IKEV2_STATE_AUTHENTICATED) { - vec_free(sa->r_id.data); - sa->r_id.data = vec_dup(sel_p->loc_id.data); + 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); + 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; - } + { + 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); + { + 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); + 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); + ikev2_set_state (sa, IKEV2_STATE_AUTH_FAILED); } - vec_free(psk); - vec_free(key_pad); + vec_free (psk); + vec_free (key_pad); } static int -ikev2_create_tunnel_interface(vnet_main_t * vnm, ikev2_sa_t *sa, ikev2_child_sa_t * child) +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; - u8 encr_type = 0; + ikev2_sa_transform_t *tr; + u8 encr_type = 0; if (!child->r_proposals) { - ikev2_set_state(sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN); + ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN); return 1; } - memset(&a, 0, sizeof(a)); + memset (&a, 0, sizeof (a)); a.is_add = 1; a.local_ip.as_u32 = sa->raddr.as_u32; a.remote_ip.as_u32 = sa->iaddr.as_u32; @@ -1171,86 +1204,90 @@ ikev2_create_tunnel_interface(vnet_main_t * vnm, ikev2_sa_t *sa, ikev2_child_sa_ a.remote_spi = child->r_proposals[0].spi; a.anti_replay = 1; - tr = ikev2_sa_get_td_for_type(child->r_proposals, IKEV2_TRANSFORM_TYPE_ESN); + tr = + ikev2_sa_get_td_for_type (child->r_proposals, IKEV2_TRANSFORM_TYPE_ESN); if (tr) - a.esn = tr->esn_type; + a.esn = tr->esn_type; else a.esn = 0; - tr = ikev2_sa_get_td_for_type(child->r_proposals, IKEV2_TRANSFORM_TYPE_ENCR); + tr = + ikev2_sa_get_td_for_type (child->r_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; - } - } + { + 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; - } + { + ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN); + return 1; + } } else { - ikev2_set_state(sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN); + ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN); return 1; } - tr = ikev2_sa_get_td_for_type(child->r_proposals, IKEV2_TRANSFORM_TYPE_INTEG); + tr = + ikev2_sa_get_td_for_type (child->r_proposals, IKEV2_TRANSFORM_TYPE_INTEG); if (tr) { if (tr->integ_type != IKEV2_TRANSFORM_INTEG_TYPE_AUTH_HMAC_SHA1_96) - { - ikev2_set_state(sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN); - return 1; - } + { + ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN); + return 1; + } } else { - ikev2_set_state(sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN); + ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN); return 1; } - ikev2_calc_child_keys(sa, child); + ikev2_calc_child_keys (sa, child); a.integ_alg = IPSEC_INTEG_ALG_SHA1_96; - a.local_integ_key_len = vec_len(child->sk_ar); - clib_memcpy(a.local_integ_key, child->sk_ar, a.local_integ_key_len); - a.remote_integ_key_len = vec_len(child->sk_ai); - clib_memcpy(a.remote_integ_key, child->sk_ai, a.remote_integ_key_len); + a.local_integ_key_len = vec_len (child->sk_ar); + clib_memcpy (a.local_integ_key, child->sk_ar, a.local_integ_key_len); + a.remote_integ_key_len = vec_len (child->sk_ai); + clib_memcpy (a.remote_integ_key, child->sk_ai, a.remote_integ_key_len); a.crypto_alg = encr_type; - a.local_crypto_key_len = vec_len(child->sk_er); - clib_memcpy(a.local_crypto_key, child->sk_er, a.local_crypto_key_len); - a.remote_crypto_key_len = vec_len(child->sk_ei); - clib_memcpy(a.remote_crypto_key, child->sk_ei, a.remote_crypto_key_len); + a.local_crypto_key_len = vec_len (child->sk_er); + clib_memcpy (a.local_crypto_key, child->sk_er, a.local_crypto_key_len); + a.remote_crypto_key_len = vec_len (child->sk_ei); + clib_memcpy (a.remote_crypto_key, child->sk_ei, a.remote_crypto_key_len); - ipsec_add_del_tunnel_if(&a); + 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) +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 (!vec_len(child->r_proposals)) + if (!vec_len (child->r_proposals)) return 0; a.is_add = 0; @@ -1259,205 +1296,217 @@ ikev2_delete_tunnel_interface(vnet_main_t * vnm, ikev2_sa_t *sa, ikev2_child_sa_ a.local_spi = child->i_proposals[0].spi; a.remote_spi = child->r_proposals[0].spi; - ipsec_add_del_tunnel_if(&a); + ipsec_add_del_tunnel_if (&a); return 0; } static u32 -ikev2_generate_resp(ikev2_sa_t *sa, ike_header_t * ike) +ikev2_generate_resp (ikev2_sa_t * sa, ike_header_t * ike) { - v8 * integ = 0; - ike_payload_header_t * ph; + 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_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); + 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); - } + { + 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); - } + { + 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); - } + { + 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); - } + { + 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); - } + { + 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); - } + { + 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); - } + { + 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); - } + { + 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); - } + { + 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 - { - ikev2_set_state(sa, IKEV2_STATE_DELETED); - goto done; - } + { + ikev2_set_state (sa, IKEV2_STATE_DELETED); + goto done; + } } else if (ike->exchange == IKEV2_EXCHANGE_INFORMATIONAL) { /* if pending delete */ if (sa->del) - { - /* The response to a request that deletes the IKE SA is an empty - INFORMATIONAL response. */ - if (sa->del[0].protocol_id == IKEV2_PROTOCOL_IKE) - { - 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; - } + { + /* The response to a request that deletes the IKE SA is an empty + INFORMATIONAL response. */ + if (sa->del[0].protocol_id == IKEV2_PROTOCOL_IKE) + { + 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; - } + { + 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; - } + { + 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->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); - } + { + 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; - } + { + 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_payload_add_notify (chain, IKEV2_NOTIFY_MSG_NO_ADDITIONAL_SAS, + 0); + } } /* IKEv2 header */ ike->version = IKE_VERSION_2; ike->flags = IKEV2_HDR_FLAG_RESPONSE; ike->nextpayload = IKEV2_PAYLOAD_SK; - tlen = sizeof(*ike); + tlen = sizeof (*ike); if (ike->exchange == IKEV2_EXCHANGE_SA_INIT) { - tlen += vec_len(chain->data); + tlen += vec_len (chain->data); ike->nextpayload = chain->first_payload_type; - ike->length = clib_host_to_net_u32(tlen); - clib_memcpy(ike->payload, chain->data, vec_len(chain->data)); + ike->length = clib_host_to_net_u32 (tlen); + clib_memcpy (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); + 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); + ikev2_payload_chain_add_padding (chain, tr_encr->block_size); /* SK payload */ - plen = sizeof(*ph); - ph = (ike_payload_header_t *) &ike->payload[0]; + 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); + int enc_len = ikev2_encrypt_data (sa, chain->data, ph->payload); plen += enc_len; /* add space for hmac */ @@ -1465,36 +1514,36 @@ ikev2_generate_resp(ikev2_sa_t *sa, ike_header_t * ike) tlen += plen; /* payload and total length */ - ph->length = clib_host_to_net_u16(plen); - ike->length = clib_host_to_net_u32(tlen); + 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->sk_ar, (u8 *) ike, - tlen - tr_integ->key_trunc); + integ = ikev2_calc_integr (tr_integ, sa->sk_ar, (u8 *) ike, + tlen - tr_integ->key_trunc); - clib_memcpy(ike->payload + tlen - tr_integ->key_trunc - sizeof(*ike), - integ, tr_integ->key_trunc); + clib_memcpy (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); + 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); + vec_free (integ); return tlen; } static int ikev2_retransmit_sa_init (ike_header_t * ike, - ip4_address_t iaddr, - ip4_address_t raddr) + ip4_address_t iaddr, ip4_address_t raddr) { - ikev2_main_t * km = &ikev2_main; - ikev2_sa_t * sa; - u32 cpu_index = os_get_cpu_number(); + ikev2_main_t *km = &ikev2_main; + ikev2_sa_t *sa; + u32 cpu_index = os_get_cpu_number (); + /* *INDENT-OFF* */ pool_foreach (sa, km->per_thread_data[cpu_index].sas, ({ if (sa->ispi == clib_net_to_host_u64(ike->ispi) && sa->iaddr.as_u32 == iaddr.as_u32 && @@ -1550,6 +1599,7 @@ ikev2_retransmit_sa_init (ike_header_t * ike, } } })); + /* *INDENT-ON* */ /* req is not retransmit */ return 0; @@ -1558,7 +1608,7 @@ ikev2_retransmit_sa_init (ike_header_t * ike, static int ikev2_retransmit_resp (ikev2_sa_t * sa, ike_header_t * ike) { - u32 msg_id = clib_net_to_host_u32(ike->msgid); + u32 msg_id = clib_net_to_host_u32 (ike->msgid); /* new req */ if (msg_id > sa->last_msg_id) @@ -1569,8 +1619,8 @@ ikev2_retransmit_resp (ikev2_sa_t * sa, ike_header_t * ike) /* retransmitted req */ else if (msg_id == sa->last_msg_id) { - ike_header_t * tmp; - tmp = (ike_header_t*)sa->last_res_packet_data; + 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; @@ -1579,34 +1629,33 @@ ikev2_retransmit_resp (ikev2_sa_t * sa, ike_header_t * ike) ike->flags = tmp->flags; ike->msgid = tmp->msgid; ike->length = tmp->length; - clib_memcpy(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); + clib_memcpy (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); + 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) + vlib_node_runtime_t * node, vlib_frame_t * frame) { - u32 n_left_from, * from, * to_next; + u32 n_left_from, *from, *to_next; ikev2_next_t next_index; - ikev2_main_t * km = &ikev2_main; - u32 cpu_index = os_get_cpu_number(); + ikev2_main_t *km = &ikev2_main; + u32 cpu_index = os_get_cpu_number (); from = vlib_frame_vector_args (frame); n_left_from = frame->n_vectors; @@ -1619,293 +1668,297 @@ ikev2_node_fn (vlib_main_t * vm, 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; - 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) - { - ikev2_sa_t sa; /* temporary store for SA */ - sa0 = &sa; - memset (sa0, 0, sizeof (*sa0)); - - 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_resp(sa0, ike0); - } - - if (sa0->state == IKEV2_STATE_SA_INIT) - { - /* add SA to the pool */ - pool_get (km->per_thread_data[cpu_index].sas, sa0); - clib_memcpy(sa0, &sa, sizeof(*sa0)); - hash_set (km->per_thread_data[cpu_index].sa_by_rspi, - sa0->rspi, - sa0 - km->per_thread_data[cpu_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[cpu_index].sa_by_rspi, - clib_net_to_host_u64(ike0->rspi)); - if (p) - { - sa0 = pool_elt_at_index (km->per_thread_data[cpu_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]); - } - len = ikev2_generate_resp(sa0, ike0); - } - } - else if (ike0->exchange == IKEV2_EXCHANGE_INFORMATIONAL) - { - uword * p; - p = hash_get(km->per_thread_data[cpu_index].sa_by_rspi, - clib_net_to_host_u64(ike0->rspi)); - if (p) - { - sa0 = pool_elt_at_index (km->per_thread_data[cpu_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); - if (ch_sa) - { - ikev2_delete_tunnel_interface(km->vnet_main, - sa0, ch_sa); - 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); - } - } - vec_free(sa0->del); - sa0->del = resp; - } - } - len = ikev2_generate_resp(sa0, ike0); - } - } - else if (ike0->exchange == IKEV2_EXCHANGE_CREATE_CHILD_SA) - { - uword * p; - p = hash_get(km->per_thread_data[cpu_index].sa_by_rspi, - clib_net_to_host_u64(ike0->rspi)); - if (p) - { - sa0 = pool_elt_at_index (km->per_thread_data[cpu_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); - } - len = ikev2_generate_resp(sa0, ike0); - } - } - } - 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; - 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); - } + { + 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; + 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) + { + ikev2_sa_t sa; /* temporary store for SA */ + sa0 = &sa; + memset (sa0, 0, sizeof (*sa0)); + + 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_resp (sa0, ike0); + } + + if (sa0->state == IKEV2_STATE_SA_INIT) + { + /* add SA to the pool */ + pool_get (km->per_thread_data[cpu_index].sas, sa0); + clib_memcpy (sa0, &sa, sizeof (*sa0)); + hash_set (km->per_thread_data[cpu_index].sa_by_rspi, + sa0->rspi, + sa0 - km->per_thread_data[cpu_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[cpu_index].sa_by_rspi, + clib_net_to_host_u64 (ike0->rspi)); + if (p) + { + sa0 = pool_elt_at_index (km->per_thread_data[cpu_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]); + } + len = ikev2_generate_resp (sa0, ike0); + } + } + else if (ike0->exchange == IKEV2_EXCHANGE_INFORMATIONAL) + { + uword *p; + p = hash_get (km->per_thread_data[cpu_index].sa_by_rspi, + clib_net_to_host_u64 (ike0->rspi)); + if (p) + { + sa0 = pool_elt_at_index (km->per_thread_data[cpu_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); + if (ch_sa) + { + ikev2_delete_tunnel_interface (km->vnet_main, + sa0, ch_sa); + 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); + } + } + vec_free (sa0->del); + sa0->del = resp; + } + } + len = ikev2_generate_resp (sa0, ike0); + } + } + else if (ike0->exchange == IKEV2_EXCHANGE_CREATE_CHILD_SA) + { + uword *p; + p = hash_get (km->per_thread_data[cpu_index].sa_by_rspi, + clib_net_to_host_u64 (ike0->rspi)); + if (p) + { + sa0 = pool_elt_at_index (km->per_thread_data[cpu_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); + } + len = ikev2_generate_resp (sa0, ike0); + } + } + } + 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; + 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); + IKEV2_ERROR_PROCESSED, frame->n_vectors); return frame->n_vectors; } +/* *INDENT-OFF* */ VLIB_REGISTER_NODE (ikev2_node,static) = { .function = ikev2_node_fn, .name = "ikev2", @@ -1923,55 +1976,56 @@ VLIB_REGISTER_NODE (ikev2_node,static) = { [IKEV2_NEXT_ERROR_DROP] = "error-drop", }, }; +/* *INDENT-ON* */ static ikev2_profile_t * -ikev2_profile_index_by_name(u8 * name) +ikev2_profile_index_by_name (u8 * name) { - ikev2_main_t * km = &ikev2_main; - uword * p; + 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]); + return pool_elt_at_index (km->profiles, p[0]); } clib_error_t * -ikev2_set_local_key(vlib_main_t * vm, u8 * file) +ikev2_set_local_key (vlib_main_t * vm, u8 * file) { - ikev2_main_t * km = &ikev2_main; + ikev2_main_t *km = &ikev2_main; - km->pkey = ikev2_load_key_file(file); + km->pkey = ikev2_load_key_file (file); if (km->pkey == NULL) - return clib_error_return(0, "load key '%s' failed", file); + 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_add_del_profile (vlib_main_t * vm, u8 * name, int is_add) { - ikev2_main_t * km = &ikev2_main; - ikev2_profile_t * p; + 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); + if (ikev2_profile_index_by_name (name)) + return clib_error_return (0, "policy %v already exists", name); pool_get (km->profiles, p); - memset(p, 0, sizeof(*p)); - p->name = vec_dup(name); + memset (p, 0, sizeof (*p)); + p->name = vec_dup (name); uword index = p - km->profiles; mhash_set_mem (&km->profile_index_by_name, name, &index, 0); } else { - p = ikev2_profile_index_by_name(name); + p = ikev2_profile_index_by_name (name); if (!p) - return clib_error_return(0, "policy %v does not exists", name); + return clib_error_return (0, "policy %v does not exists", name); vec_free (p->name); pool_put (km->profiles, p); @@ -1981,90 +2035,94 @@ 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 * auth_data, u8 data_hex_format) +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; + ikev2_profile_t *p; + clib_error_t *r; - p = ikev2_profile_index_by_name(name); + 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); + 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.data = vec_dup (auth_data); p->auth.hex = data_hex_format; if (auth_method == IKEV2_AUTH_METHOD_RSA_SIG) { if (p->auth.key) - EVP_PKEY_free(p->auth.key); - p->auth.key = ikev2_load_cert_file(auth_data); + 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 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_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; + 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) + 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); + r = clib_error_return (0, "unsupported identity type %U", + format_ikev2_id_type, id_type); return r; } - p = ikev2_profile_index_by_name(name); + p = ikev2_profile_index_by_name (name); - if (!p) { - r = clib_error_return(0, "unknown profile %v", name); - return r; - } + if (!p) + { + r = clib_error_return (0, "unknown profile %v", name); + return r; + } if (is_local) { - vec_free(p->loc_id.data); + vec_free (p->loc_id.data); p->loc_id.type = id_type; - p->loc_id.data = vec_dup(data); + p->loc_id.data = vec_dup (data); } else { - vec_free(p->rem_id.data); + vec_free (p->rem_id.data); p->rem_id.type = id_type; - p->rem_id.data = vec_dup(data); + 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_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; + ikev2_profile_t *p; + clib_error_t *r; - p = ikev2_profile_index_by_name(name); + p = ikev2_profile_index_by_name (name); - if (!p) { - r = clib_error_return(0, "unknown profile %v", name); - return r; - } + 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.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; @@ -2088,24 +2146,24 @@ ikev2_set_profile_ts(vlib_main_t * vm, u8 * name, u8 protocol_id, 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(); + ikev2_main_t *km = &ikev2_main; + clib_error_t *error; + vlib_thread_main_t *tm = vlib_get_thread_main (); int thread_id; memset (km, 0, sizeof (ikev2_main_t)); - km->vnet_main = vnet_get_main(); + km->vnet_main = vnet_get_main (); km->vlib_main = vm; - ikev2_crypto_init(km); + 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); + 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)); + hash_create (0, sizeof (uword)); } if ((error = vlib_call_init_function (vm, ikev2_cli_init))) @@ -2117,3 +2175,11 @@ ikev2_init (vlib_main_t * vm) } + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |