summaryrefslogtreecommitdiffstats
path: root/hicn-light/src/config/controlListRoutes.c
blob: 4a21b5ef4c15cba7385beef45deebbacb46a42e2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
/*
 * Copyright (c) 2017-2019 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <src/config.h>

#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <strings.h>

#include <parc/assert/parc_Assert.h>

#include <parc/algol/parc_Memory.h>
#include <parc/algol/parc_Time.h>

#include <src/config/controlListRoutes.h>

#include <src/utils/commands.h>
#include <src/utils/utils.h>

static CommandReturn _controlListRoutes_Execute(CommandParser *parser,
                                                CommandOps *ops,
                                                PARCList *args);
static CommandReturn _controlListRoutes_HelpExecute(CommandParser *parser,
                                                    CommandOps *ops,
                                                    PARCList *args);

static const char *_commandListRoutes = "list routes";
static const char *_commandListRoutesHelp = "help list routes";

// ====================================================

CommandOps *controlListRoutes_Create(ControlState *state) {
  return commandOps_Create(state, _commandListRoutes, NULL,
                           _controlListRoutes_Execute, commandOps_Destroy);
}

CommandOps *controlListRoutes_HelpCreate(ControlState *state) {
  return commandOps_Create(state, _commandListRoutesHelp, NULL,
                           _controlListRoutes_HelpExecute, commandOps_Destroy);
}

// ====================================================

static CommandReturn _controlListRoutes_HelpExecute(CommandParser *parser,
                                                    CommandOps *ops,
                                                    PARCList *args) {
  printf("command: list routes\n");
  printf("\n");
  printf(
      "This command will fetch the prefix routing table.  For each route, it "
      "will list:\n");
  printf("   iface:    interface\n");
  printf(
      "   protocol: the routing protocol, such as STATIC, CONNECTED, etc.\n");
  printf(
      "   type:     LMP or EXACT (longest matching prefix or exact match)\n");
  printf("   cost:     The route cost, lower being preferred\n");
  printf("   next:     List of next hops by interface id\n");
  printf("   prefix:   name prefix\n");
  printf("\n");
  return CommandReturn_Success;
}

static CommandReturn _controlListRoutes_Execute(CommandParser *parser,
                                                CommandOps *ops,
                                                PARCList *args) {
  if (parcList_Size(args) != 2) {
    _controlListRoutes_HelpExecute(parser, ops, args);
    return CommandReturn_Failure;
  }

  ControlState *state = ops->closure;

  // send message and receive response
  struct iovec *response = utils_SendRequest(state, LIST_ROUTES, NULL, 0);
  if (!response) {  // get NULL pointer = FAILURE
    return CommandReturn_Failure;
  }

  // Process/Print message
  header_control_message *receivedHeader =
      (header_control_message *)response[0].iov_base;
  uint8_t *receivedPayload = (uint8_t *)response[1].iov_base;

  // Allocate output to pass to the main function if the call is not interactive
  char **commandOutputMain = NULL;
  if (!controlState_IsInteractive(state) && receivedHeader->length > 0) {
    commandOutputMain =
        parcMemory_Allocate(sizeof(char *) * receivedHeader->length);
    for (size_t j = 0; j < receivedHeader->length; j++) {
      commandOutputMain[j] = parcMemory_Allocate(sizeof(char) * 128);
    }
  }

  char *addrString = NULL;
  in_port_t port = htons(1234);  // this is a random port number that is ignored

  if (receivedHeader->length > 0) {
    printf("%6.6s %8.8s %70.70s %s\n", "iface", "cost", "prefix", "len");
  } else {
    printf(" --- No entry in the list \n");
  }

  for (int i = 0; i < receivedHeader->length; i++) {
    list_routes_command *listRoutesCommand =
        (list_routes_command *)(receivedPayload +
                                (i * sizeof(list_routes_command)));

    addrString = utils_CommandAddressToString(
        listRoutesCommand->addressType, &listRoutesCommand->address, &port);

    PARCBufferComposer *composer = parcBufferComposer_Create();

    parcBufferComposer_Format(
        composer, "%6u %8u %70.70s %3d", listRoutesCommand->connid,
        listRoutesCommand->cost, addrString, listRoutesCommand->len);

    PARCBuffer *tempBuffer = parcBufferComposer_ProduceBuffer(composer);
    char *result = parcBuffer_ToString(tempBuffer);
    parcBuffer_Release(&tempBuffer);

    if (!controlState_IsInteractive(state)) {
      strcpy(commandOutputMain[i], result);
    }

    puts(result);
    parcMemory_Deallocate((void **)&result);
    parcBufferComposer_Release(&composer);
  }

  controlState_SetCommandOutput(state, commandOutputMain);

  // DEALLOCATE
  parcMemory_Deallocate((void **)&addrString);
  parcMemory_Deallocate(&receivedHeader);   // free response[0].iov_base
  parcMemory_Deallocate(&receivedPayload);  // free response[1].iov_base
  parcMemory_Deallocate(&response);         // free iovec pointer

  return CommandReturn_Success;
}