aboutsummaryrefslogtreecommitdiffstats
path: root/hicn-light/src/config/controlAddRoute.c
blob: 27aae40191e03c27e0395af8ddac38c1af835d34 (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
155
156
157
158
159
160
161
162
/*
 * 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 <ctype.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>

#include <parc/assert/parc_Assert.h>

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

#include <src/config/controlAddRoute.h>

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

static CommandReturn _controlAddRoute_Execute(CommandParser *parser,
                                              CommandOps *ops, PARCList *args);
static CommandReturn _controlAddRoute_HelpExecute(CommandParser *parser,
                                                  CommandOps *ops,
                                                  PARCList *args);

static const char *_commandAddRoute = "add route";
static const char *_commandAddRouteHelp = "help add route";

CommandOps *controlAddRoute_Create(ControlState *state) {
  return commandOps_Create(state, _commandAddRoute, NULL,
                           _controlAddRoute_Execute, commandOps_Destroy);
}

CommandOps *controlAddRoute_HelpCreate(ControlState *state) {
  return commandOps_Create(state, _commandAddRouteHelp, NULL,
                           _controlAddRoute_HelpExecute, commandOps_Destroy);
}

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

static CommandReturn _controlAddRoute_HelpExecute(CommandParser *parser,
                                                  CommandOps *ops,
                                                  PARCList *args) {
  printf("commands:\n");
  printf("   add route <symbolic | connid> <prefix> <cost>\n");
  printf("\n");
  printf("   symbolic:  The symbolic name for an exgress\n");
  printf(
      "   connid:    The egress connection id (see 'help list connections')\n");
  printf(
      "   prefix:    The hicn name as IPv4 or IPv6 address (e.g 1234::0/64)\n");
  printf("   cost:      positive integer representing cost\n");
  printf("\n");
  return CommandReturn_Success;
}

static CommandReturn _controlAddRoute_Execute(CommandParser *parser,
                                              CommandOps *ops, PARCList *args) {
  ControlState *state = ops->closure;

  if (parcList_Size(args) != 5) {
    _controlAddRoute_HelpExecute(parser, ops, args);
    return CommandReturn_Failure;
  }

  const char *symbolicOrConnid = parcList_GetAtIndex(args, 2);

  if (!utils_ValidateSymbolicName(symbolicOrConnid) &&
      !utils_IsNumber(symbolicOrConnid)) {
    printf(
        "ERROR: Invalid symbolic or connid:\nsymbolic name must begin with an "
        "alpha followed by alphanum;\nconnid must be an integer\n");
    return CommandReturn_Failure;
  }

  unsigned cost = atoi(parcList_GetAtIndex(args, 4));

  if (cost == 0) {
    printf("ERROR: cost must be positive integer, got %u from '%s'\n", cost,
           (char *)parcList_GetAtIndex(args, 4));
    return CommandReturn_Failure;
  }

  const char *prefixStr = parcList_GetAtIndex(args, 3);
  char *addr = (char *)malloc((strlen(prefixStr) + 1) * sizeof(char));

  // separate address and len
  char *slash;
  uint32_t len = 0;
  strcpy(addr, prefixStr);
  slash = strrchr(addr, '/');
  if (slash != NULL) {
    len = atoi(slash + 1);
    *slash = '\0';
  }

  if (len == 0) {
    printf("ERROR: a prefix can not be of length 0\n");
    free(addr);
    return CommandReturn_Failure;
  }

  // allocate command payload
  add_route_command *addRouteCommand =
      parcMemory_AllocateAndClear(sizeof(add_route_command));

  // check and set IP address
  if (inet_pton(AF_INET, addr, &addRouteCommand->address.ipv4) == 1) {
    if (len > 32) {
      printf("ERROR: exceeded INET mask length, max=32\n");
      parcMemory_Deallocate(&addRouteCommand);
      free(addr);
      return CommandReturn_Failure;
    }
    addRouteCommand->addressType = ADDR_INET;
  } else if (inet_pton(AF_INET6, addr, &addRouteCommand->address.ipv6) == 1) {
    if (len > 128) {
      printf("ERROR: exceeded INET6 mask length, max=128\n");
      parcMemory_Deallocate(&addRouteCommand);
      free(addr);
      return CommandReturn_Failure;
    }
    addRouteCommand->addressType = ADDR_INET6;
  } else {
    printf("Error: %s is not a valid network address \n", addr);
    parcMemory_Deallocate(&addRouteCommand);
    free(addr);
    return CommandReturn_Failure;
  }

  free(addr);

  // Fill remaining payload fields
  addRouteCommand->len = len;
  addRouteCommand->cost = (uint16_t)cost;
  strcpy(addRouteCommand->symbolicOrConnid, symbolicOrConnid);

  // send message and receive response
  struct iovec *response = utils_SendRequest(state, ADD_ROUTE, addRouteCommand,
                                             sizeof(add_route_command));

  if (!response) {  // get NULL pointer
    return CommandReturn_Failure;
  }

  parcMemory_Deallocate(&response);  // free iovec pointer
  return CommandReturn_Success;
}