builtins.c

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#include <vnet/vnet.h>
#include <builtinurl/builtinurl.h>
#include <http_static/http_static.h>
#include <mactime/mactime.h>
#include <vlib/unix/plugin.h>
#include <vnet/ip-neighbor/ip_neighbor.h>

static walk_rc_t
mactime_ip_neighbor_copy (index_t ipni, void *ctx)
{
  mactime_main_t *mm = ctx;

  vec_add1 (mm->arp_cache_copy, ipni);

  return (WALK_CONTINUE);
}

static int
handle_get_mactime (http_builtin_method_type_t reqtype,
                    u8 * request, http_session_t * hs)
{
  mactime_main_t *mm = &mactime_main;
  mactime_device_t *dp;
  u8 *macstring = 0;
  char *status_string;
  u32 *pool_indices = 0;
  int current_status = 99;
  int i, j;
  f64 now;
  vlib_counter_t allow, drop;
  ip_neighbor_t *n;
  char *q = "\"";
  u8 *s = 0;
  int need_comma = 0;

  /* Walk all ip4 neighbours on all interfaces */
  vec_reset_length (mm->arp_cache_copy);
  ip_neighbor_walk (IP46_TYPE_IP4, ~0, mactime_ip_neighbor_copy, mm);

  now = clib_timebase_now (&mm->timebase);

  if (PREDICT_FALSE ((now - mm->sunday_midnight) > 86400.0 * 7.0))
    mm->sunday_midnight = clib_timebase_find_sunday_midnight (now);

    /* *INDENT-OFF* */
    pool_foreach (dp, mm->devices,
    ({
        vec_add1 (pool_indices, dp - mm->devices);
    }));
    /* *INDENT-ON* */

  s = format (s, "{%smactime%s: [\n", q, q);

  for (i = 0; i < vec_len (pool_indices); i++)
    {
      dp = pool_elt_at_index (mm->devices, pool_indices[i]);

      /* Check dynamic ranges */
      for (j = 0; j < vec_len (dp->ranges); j++)
        {
          clib_timebase_range_t *r = dp->ranges + j;
          f64 start0, end0;

          start0 = r->start + mm->sunday_midnight;
          end0 = r->end + mm->sunday_midnight;

          if (now >= start0 && now <= end0)
            {
              if (dp->flags & MACTIME_DEVICE_FLAG_DYNAMIC_ALLOW)
                current_status = 3;
              else if (dp->flags & MACTIME_DEVICE_FLAG_DYNAMIC_ALLOW_QUOTA)
                current_status = 5;
              else
                current_status = 2;
              goto print;
            }
        }
      if (dp->flags & MACTIME_DEVICE_FLAG_STATIC_DROP)
        current_status = 0;
      if (dp->flags & MACTIME_DEVICE_FLAG_STATIC_ALLOW)
        current_status = 1;
      if (dp->flags & MACTIME_DEVICE_FLAG_DYNAMIC_ALLOW)
        current_status = 2;
      if (dp->flags & MACTIME_DEVICE_FLAG_DYNAMIC_DROP)
        current_status = 3;
      if (dp->flags & MACTIME_DEVICE_FLAG_DYNAMIC_ALLOW_QUOTA)
        current_status = 4;

    print:
      vec_reset_length (macstring);

      macstring = format (0, "%U", format_mac_address, dp->mac_address);

      if (need_comma)
        s = format (s, "},\n");

      need_comma = 1;
      s = format (s, "{%smac_address%s: %s%s%s, ", q, q, q, macstring, q);

      switch (current_status)
        {
        case 0:
          status_string = "static drop";
          break;
        case 1:
          status_string = "static allow";
          break;
        case 2:
          status_string = "dynamic drop";
          break;
        case 3:
          status_string = "dynamic allow";
          break;
        case 4:
          status_string = "d-quota inact";
          break;
        case 5:
          status_string = "d-quota activ";
          break;
        default:
          status_string = "code bug!";
          break;
        }
      vlib_get_combined_counter (&mm->allow_counters, dp - mm->devices,
                                 &allow);
      vlib_get_combined_counter (&mm->drop_counters, dp - mm->devices, &drop);
      s = format (s, "%sname%s: %s%s%s, %sstatus%s: %s%s%s,",
                  q, q, q, dp->device_name, q, q, q, q, status_string, q);
      s = format (s, "%sallow_pkts%s: %lld,", q, q, allow.packets);
      s = format (s, "%sallow_bytes%s: %lld,", q, q, allow.bytes);
      s = format (s, "%sdrop_pkts%s: %lld", q, q, drop.packets);

      for (j = 0; j < vec_len (mm->arp_cache_copy); j++)
        {
          n = ip_neighbor_get (mm->arp_cache_copy[j]);
          if (!memcmp (dp->mac_address,
                       ip_neighbor_get_mac (n), sizeof (mac_address_t)))
            {
              s = format (s, ", %sip4_address%s: %s%U%s", q, q,
                          q, format_ip46_address,
                          ip_neighbor_get_ip (n), IP46_TYPE_IP4, q);
              break;
            }
        }
    }
  if (need_comma)
    s = format (s, "}\n");
  s = format (s, "]}\n");
  vec_free (macstring);
  vec_free (pool_indices);

  hs->data = s;
  hs->data_offset = 0;
  hs->cache_pool_index = ~0;
  hs->free_data = 1;
  return 0;
}

void
mactime_url_init (vlib_main_t * vm)
{
  void (*fp) (void *, char *, int);

  /* Look up the builtin URL registration handler */
  fp = vlib_get_plugin_symbol ("http_static_plugin.so",
                               "http_static_server_register_builtin_handler");

  if (fp == 0)
    {
      clib_warning ("http_static_plugin.so not loaded...");
      return;
    }

  (*fp) (handle_get_mactime, "mactime.json", HTTP_BUILTIN_METHOD_GET);
}

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */