1/*
2 * Copyright (c) 2016 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15/*
16 *------------------------------------------------------------------
17 * pot_api.c - Proof of Transit related APIs to create
18 *             and maintain profiles
19 *------------------------------------------------------------------
20 */
21
22#include <vnet/vnet.h>
23#include <vnet/plugin/plugin.h>
24#include <ioam/lib-pot/pot_util.h>
25
26#include <vlibapi/api.h>
27#include <vlibmemory/api.h>
28
29/* define message IDs */
30#include <ioam/lib-pot/pot.api_enum.h>
31#include <ioam/lib-pot/pot.api_types.h>
32
33#define REPLY_MSG_ID_BASE sm->msg_id_base
34#include <vlibapi/api_helper_macros.h>
35
36static void vl_api_pot_profile_add_t_handler
37(vl_api_pot_profile_add_t *mp)
38{
39    pot_main_t * sm = &pot_main;
40    int rv = 0;
41    vl_api_pot_profile_add_reply_t * rmp;
42    u8 id;
43    pot_profile *profile = NULL;
44    u8 *name = 0;
45
46    name = vl_api_from_api_to_new_vec(mp, &mp->list_name);
47
48    pot_profile_list_init(name);
49    id = mp->id;
50    profile = pot_profile_find(id);
51    if (profile) {
52	rv = pot_profile_create(profile,
53				clib_net_to_host_u64(mp->prime),
54				clib_net_to_host_u64(mp->polynomial_public),
55				clib_net_to_host_u64(mp->lpc),
56				clib_net_to_host_u64(mp->secret_share));
57	if (rv != 0)
58            goto ERROROUT;
59	if (1 == mp->validator)
60	  (void)pot_set_validator(profile, clib_net_to_host_u64(mp->secret_key));
61        (void)pot_profile_set_bit_mask(profile, mp->max_bits);
62    } else {
63        rv = -3;
64    }
65 ERROROUT:
66    vec_free(name);
67    REPLY_MACRO(VL_API_POT_PROFILE_ADD_REPLY);
68}
69
70static void send_pot_profile_details(vl_api_pot_profile_show_config_dump_t *mp, u8 id)
71{
72    vl_api_pot_profile_show_config_details_t * rmp;
73    pot_main_t * sm = &pot_main;
74    pot_profile *profile = pot_profile_find(id);
75    int rv = 0;
76    if(profile){
77        REPLY_MACRO2(VL_API_POT_PROFILE_SHOW_CONFIG_DETAILS,
78			rmp->id=id;
79			rmp->validator=profile->validator;
80			rmp->secret_key=clib_host_to_net_u64(profile->secret_key);
81			rmp->secret_share=clib_host_to_net_u64(profile->secret_share);
82			rmp->prime=clib_host_to_net_u64(profile->prime);
83			rmp->bit_mask=clib_host_to_net_u64(profile->bit_mask);
84			rmp->lpc=clib_host_to_net_u64(profile->lpc);
85			rmp->polynomial_public=clib_host_to_net_u64(profile->poly_pre_eval);
86			);
87    }
88    else{
89        REPLY_MACRO2(VL_API_POT_PROFILE_SHOW_CONFIG_DETAILS,
90			rmp->id=id;
91			rmp->validator=0;
92			rmp->secret_key=0;
93			rmp->secret_share=0;
94			rmp->prime=0;
95			rmp->bit_mask=0;
96			rmp->lpc=0;
97			rmp->polynomial_public=0;
98			);
99    }
100}
101
102static void vl_api_pot_profile_show_config_dump_t_handler
103(vl_api_pot_profile_show_config_dump_t *mp)
104{
105    u8 id = mp->id;
106    u8 dump_call_id = ~0;
107    if(dump_call_id==id){
108        for(id=0;id<MAX_POT_PROFILES;id++)
109	    send_pot_profile_details(mp,id);
110    }
111    else
112        send_pot_profile_details(mp,id);
113}
114
115static void vl_api_pot_profile_activate_t_handler
116(vl_api_pot_profile_activate_t *mp)
117{
118    pot_main_t * sm = &pot_main;
119    int rv = 0;
120    vl_api_pot_profile_add_reply_t * rmp;
121    u8 id;
122    u8 *name = NULL;
123
124    name = vl_api_from_api_to_new_vec(mp, &mp->list_name);
125    if (!pot_profile_list_is_enabled(name)) {
126        rv = -1;
127    } else {
128        id = mp->id;
129	rv = pot_profile_set_active(id);
130    }
131
132    vec_free(name);
133    REPLY_MACRO(VL_API_POT_PROFILE_ACTIVATE_REPLY);
134}
135
136
137static void vl_api_pot_profile_del_t_handler
138(vl_api_pot_profile_del_t *mp)
139{
140    pot_main_t * sm = &pot_main;
141    int rv = 0;
142    vl_api_pot_profile_del_reply_t * rmp;
143
144    clear_pot_profiles();
145
146    REPLY_MACRO(VL_API_POT_PROFILE_DEL_REPLY);
147}
148
149#include <ioam/lib-pot/pot.api.c>
150static clib_error_t * pot_init (vlib_main_t * vm)
151{
152  pot_main_t * sm = &pot_main;
153
154  bzero(sm, sizeof(pot_main));
155  (void)pot_util_init();
156
157  sm->vlib_main = vm;
158  sm->vnet_main = vnet_get_main();
159
160  /* Ask for a correctly-sized block of API message decode slots */
161  sm->msg_id_base = setup_message_id_table ();
162
163  return 0;
164}
165
166VLIB_INIT_FUNCTION (pot_init);
167