src/plugins/ioam/lib-pot/pot_api.c

   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_msg_enum.h>
  31
  32 /* define message structures */
  33 #define vl_typedefs
  34 #include <ioam/lib-pot/pot_all_api_h.h>
  35 #undef vl_typedefs
  36
  37 /* define generated endian-swappers */
  38 #define vl_endianfun
  39 #include <ioam/lib-pot/pot_all_api_h.h>
  40 #undef vl_endianfun
  41
  42 /* instantiate all the print functions we know about */
  43 #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
  44 #define vl_printfun
  45 #include <ioam/lib-pot/pot_all_api_h.h>
  46 #undef vl_printfun
  47
  48 /* Get the API version number */
  49 #define vl_api_version(n,v) static u32 api_version=(v);
  50 #include <ioam/lib-pot/pot_all_api_h.h>
  51 #undef vl_api_version
  52
  53 #define REPLY_MSG_ID_BASE sm->msg_id_base
  54 #include <vlibapi/api_helper_macros.h>
  55
  56 /* List of message types that this plugin understands */
  57 #define foreach_pot_plugin_api_msg                                      \
  58 _(POT_PROFILE_ADD, pot_profile_add)                                     \
  59 _(POT_PROFILE_ACTIVATE, pot_profile_activate)                           \
  60 _(POT_PROFILE_DEL, pot_profile_del)                                     \
  61 _(POT_PROFILE_SHOW_CONFIG_DUMP, pot_profile_show_config_dump)                                     \
  62
  63 static void vl_api_pot_profile_add_t_handler
  64 (vl_api_pot_profile_add_t *mp)
  65 {
  66     pot_main_t * sm = &pot_main;
  67     int rv = 0;
  68     vl_api_pot_profile_add_reply_t * rmp;
  69     u8 id;
  70     pot_profile *profile = NULL;
  71     u8 *name = 0;
  72
  73     if (mp->list_name_len)
  74         name = format(0, "%s", mp->list_name);
  75
  76     pot_profile_list_init(name);
  77     id = mp->id;
  78     profile = pot_profile_find(id);
  79     if (profile) {
  80         rv = pot_profile_create(profile,
  81                                 clib_net_to_host_u64(mp->prime),
  82                                 clib_net_to_host_u64(mp->polynomial_public),
  83                                 clib_net_to_host_u64(mp->lpc),
  84                                 clib_net_to_host_u64(mp->secret_share));
  85         if (rv != 0)
  86             goto ERROROUT;
  87         if (1 == mp->validator)
  88           (void)pot_set_validator(profile, clib_net_to_host_u64(mp->secret_key));
  89         (void)pot_profile_set_bit_mask(profile, mp->max_bits);
  90     } else {
  91         rv = -3;
  92     }
  93  ERROROUT:
  94     vec_free(name);
  95     REPLY_MACRO(VL_API_POT_PROFILE_ADD_REPLY);
  96 }
  97
  98 static void send_pot_profile_details(vl_api_pot_profile_show_config_dump_t *mp, u8 id)
  99 {
 100     vl_api_pot_profile_show_config_details_t * rmp;
 101     pot_main_t * sm = &pot_main;
 102     pot_profile *profile = pot_profile_find(id);
 103     int rv = 0;
 104     if(profile){
 105         REPLY_MACRO2(VL_API_POT_PROFILE_SHOW_CONFIG_DETAILS,
 106                         rmp->id=id;
 107                         rmp->validator=profile->validator;
 108                         rmp->secret_key=clib_host_to_net_u64(profile->secret_key);
 109                         rmp->secret_share=clib_host_to_net_u64(profile->secret_share);
 110                         rmp->prime=clib_host_to_net_u64(profile->prime);
 111                         rmp->bit_mask=clib_host_to_net_u64(profile->bit_mask);
 112                         rmp->lpc=clib_host_to_net_u64(profile->lpc);
 113                         rmp->polynomial_public=clib_host_to_net_u64(profile->poly_pre_eval);
 114                         );
 115     }
 116     else{
 117         REPLY_MACRO2(VL_API_POT_PROFILE_SHOW_CONFIG_DETAILS,
 118                         rmp->id=id;
 119                         rmp->validator=0;
 120                         rmp->secret_key=0;
 121                         rmp->secret_share=0;
 122                         rmp->prime=0;
 123                         rmp->bit_mask=0;
 124                         rmp->lpc=0;
 125                         rmp->polynomial_public=0;
 126                         );
 127     }
 128 }
 129
 130 static void vl_api_pot_profile_show_config_dump_t_handler
 131 (vl_api_pot_profile_show_config_dump_t *mp)
 132 {
 133     u8 id = mp->id;
 134     u8 dump_call_id = ~0;
 135     if(dump_call_id==id){
 136         for(id=0;id<MAX_POT_PROFILES;id++)
 137             send_pot_profile_details(mp,id);
 138     }
 139     else
 140         send_pot_profile_details(mp,id);
 141 }
 142
 143 static void vl_api_pot_profile_activate_t_handler
 144 (vl_api_pot_profile_activate_t *mp)
 145 {
 146     pot_main_t * sm = &pot_main;
 147     int rv = 0;
 148     vl_api_pot_profile_add_reply_t * rmp;
 149     u8 id;
 150     u8 *name = NULL;
 151
 152     if (mp->list_name_len)
 153         name = format(0, "%s", mp->list_name);
 154     if (!pot_profile_list_is_enabled(name)) {
 155         rv = -1;
 156     } else {
 157         id = mp->id;
 158         rv = pot_profile_set_active(id);
 159     }
 160
 161     vec_free(name);
 162     REPLY_MACRO(VL_API_POT_PROFILE_ACTIVATE_REPLY);
 163 }
 164
 165
 166 static void vl_api_pot_profile_del_t_handler
 167 (vl_api_pot_profile_del_t *mp)
 168 {
 169     pot_main_t * sm = &pot_main;
 170     int rv = 0;
 171     vl_api_pot_profile_del_reply_t * rmp;
 172
 173     clear_pot_profiles();
 174
 175     REPLY_MACRO(VL_API_POT_PROFILE_DEL_REPLY);
 176 }
 177
 178 /* Set up the API message handling tables */
 179 static clib_error_t *
 180 pot_plugin_api_hookup (vlib_main_t *vm)
 181 {
 182   pot_main_t * sm = &pot_main;
 183 #define _(N,n)                                                  \
 184     vl_msg_api_set_handlers((VL_API_##N + sm->msg_id_base),     \
 185                            #n,                                  \
 186                            vl_api_##n##_t_handler,              \
 187                            vl_noop_handler,                     \
 188                            vl_api_##n##_t_endian,               \
 189                            vl_api_##n##_t_print,                \
 190                            sizeof(vl_api_##n##_t), 1);
 191     foreach_pot_plugin_api_msg;
 192 #undef _
 193
 194     return 0;
 195 }
 196
 197 #define vl_msg_name_crc_list
 198 #include <ioam/lib-pot/pot_all_api_h.h>
 199 #undef vl_msg_name_crc_list
 200
 201 static void
 202 setup_message_id_table (pot_main_t * sm, api_main_t * am)
 203 {
 204 #define _(id,n,crc) \
 205   vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id + sm->msg_id_base);
 206   foreach_vl_msg_name_crc_pot;
 207 #undef _
 208 }
 209
 210 static clib_error_t * pot_init (vlib_main_t * vm)
 211 {
 212   pot_main_t * sm = &pot_main;
 213   clib_error_t * error = 0;
 214   u8 * name;
 215
 216   bzero(sm, sizeof(pot_main));
 217   (void)pot_util_init();
 218
 219   sm->vlib_main = vm;
 220   sm->vnet_main = vnet_get_main();
 221
 222   name = format (0, "ioam_pot_%08x%c", api_version, 0);
 223
 224   /* Ask for a correctly-sized block of API message decode slots */
 225   sm->msg_id_base = vl_msg_api_get_msg_ids
 226       ((char *) name, VL_MSG_FIRST_AVAILABLE);
 227
 228   error = pot_plugin_api_hookup (vm);
 229
 230   /* Add our API messages to the global name_crc hash table */
 231   setup_message_id_table (sm, &api_main);
 232
 233   vec_free(name);
 234
 235   return error;
 236 }
 237
 238 VLIB_INIT_FUNCTION (pot_init);