1 files changed, 355 insertions, 0 deletions
diff --git a/extras/deprecated/vom/vom/dhcp_client.cpp b/extras/deprecated/vom/vom/dhcp_client.cpp
new file mode 100644
index 00000000000..1c1dd819fc0
--- /dev/null
+++ b/extras/deprecated/vom/vom/dhcp_client.cpp
@@ -0,0 +1,355 @@
+/*
+ * Copyright (c) 2017 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 "vom/dhcp_client.hpp"
+#include "vom/dhcp_client_cmds.hpp"
+#include "vom/route_api_types.hpp"
+#include "vom/singular_db_funcs.hpp"
+
+namespace VOM {
+const dhcp_client::state_t dhcp_client::state_t::DISCOVER(0, "discover");
+const dhcp_client::state_t dhcp_client::state_t::REQUEST(1, "request");
+const dhcp_client::state_t dhcp_client::state_t::BOUND(2, "bound");
+
+dhcp_client::state_t::state_t(int v, const std::string& s)
+  : enum_base<dhcp_client::state_t>(v, s)
+{
+}
+
+const dhcp_client::state_t&
+dhcp_client::state_t::from_vpp(int n)
+{
+  if (REQUEST == n)
+    return (REQUEST);
+  if (BOUND == n)
+    return (BOUND);
+
+  return (DISCOVER);
+}
+
+singular_db<interface::key_t, dhcp_client> dhcp_client::m_db;
+std::weak_ptr<dhcp_client_cmds::events_cmd> dhcp_client::m_s_event_cmd;
+dhcp_client::dhcp_client_listener dhcp_client::m_listener;
+
+dhcp_client::event_handler dhcp_client::m_evh;
+
+dhcp_client::dhcp_client(const interface& itf,
+                         const std::string& hostname,
+                         bool set_broadcast_flag,
+                         const ip_dscp_t& dscp,
+                         event_listener* ev)
+  : m_itf(itf.singular())
+  , m_hostname(hostname)
+  , m_client_id(l2_address_t::ZERO)
+  , m_set_broadcast_flag(set_broadcast_flag)
+  , m_dscp(dscp)
+  , m_binding(0)
+  , m_evl(ev)
+  , m_event_cmd(get_event_cmd())
+{
+}
+
+dhcp_client::dhcp_client(const interface& itf,
+                         const std::string& hostname,
+                         const l2_address_t& client_id,
+                         bool set_broadcast_flag,
+                         const ip_dscp_t& dscp,
+                         event_listener* ev)
+  : m_itf(itf.singular())
+  , m_hostname(hostname)
+  , m_client_id(client_id)
+  , m_set_broadcast_flag(set_broadcast_flag)
+  , m_dscp(dscp)
+  , m_binding(0)
+  , m_evl(ev)
+  , m_event_cmd(get_event_cmd())
+{
+}
+
+dhcp_client::dhcp_client(const dhcp_client& o)
+  : m_itf(o.m_itf)
+  , m_hostname(o.m_hostname)
+  , m_client_id(o.m_client_id)
+  , m_set_broadcast_flag(o.m_set_broadcast_flag)
+  , m_dscp(o.m_dscp)
+  , m_binding(0)
+  , m_evl(o.m_evl)
+  , m_event_cmd(o.m_event_cmd)
+{
+}
+
+dhcp_client::~dhcp_client()
+{
+  sweep();
+
+  // not in the DB anymore.
+  m_db.release(m_itf->key(), this);
+}
+
+bool
+dhcp_client::operator==(const dhcp_client& l) const
+{
+  return ((key() == l.key()) && (m_hostname == l.m_hostname) &&
+          (m_client_id == l.m_client_id && m_dscp == l.m_dscp));
+}
+
+const dhcp_client::key_t&
+dhcp_client::key() const
+{
+  return (m_itf->key());
+}
+
+void
+dhcp_client::sweep()
+{
+  if (m_binding) {
+    HW::enqueue(
+      new dhcp_client_cmds::unbind_cmd(m_binding, m_itf->handle(), m_hostname));
+  }
+  HW::write();
+}
+
+void
+dhcp_client::dump(std::ostream& os)
+{
+  db_dump(m_db, os);
+}
+
+void
+dhcp_client::replay()
+{
+  if (m_binding) {
+    HW::enqueue(new dhcp_client_cmds::bind_cmd(
+      m_binding, m_itf->handle(), m_hostname, m_client_id, false, m_dscp));
+  }
+}
+
+std::string
+dhcp_client::to_string() const
+{
+  std::ostringstream s;
+  s << "DHCP-client: " << m_itf->to_string() << " hostname:" << m_hostname
+    << " client_id:[" << m_client_id << "] "
+    << "dscp:" << m_dscp.to_string() << " " << m_binding.to_string();
+  if (m_lease)
+    s << " " << m_lease->to_string();
+  else
+    s << " no-lease";
+
+  return (s.str());
+}
+
+void
+dhcp_client::update(const dhcp_client& desired)
+{
+  /*
+   * the desired state is always that the interface should be created
+   */
+  if (!m_binding) {
+    HW::enqueue(new dhcp_client_cmds::bind_cmd(
+      m_binding, m_itf->handle(), m_hostname, m_client_id, false, m_dscp));
+  }
+
+  if (desired.m_lease)
+    m_lease = desired.m_lease;
+  if (m_evl != desired.m_evl) {
+    m_evl = desired.m_evl;
+  }
+}
+
+const std::shared_ptr<dhcp_client::lease_t>
+dhcp_client::lease() const
+{
+  return (m_lease);
+}
+
+void
+dhcp_client::lease(std::shared_ptr<dhcp_client::lease_t> lease)
+{
+  m_lease = lease;
+}
+
+std::shared_ptr<dhcp_client>
+dhcp_client::find_or_add(const dhcp_client& temp)
+{
+  return (m_db.find_or_add(temp.m_itf->key(), temp));
+}
+
+std::shared_ptr<dhcp_client>
+dhcp_client::find(const key_t& k)
+{
+  return (m_db.find(k));
+}
+
+std::shared_ptr<dhcp_client>
+dhcp_client::singular() const
+{
+  return find_or_add(*this);
+}
+
+dhcp_client::lease_t::lease_t()
+  : state(state_t::DISCOVER)
+  , mac(mac_address_t::ZERO)
+{
+}
+
+dhcp_client::lease_t::lease_t(const state_t& state,
+                              std::shared_ptr<interface> itf,
+                              const boost::asio::ip::address& router_address,
+                              const route::prefix_t& host_prefix,
+                              const std::string& hostname,
+                              const mac_address_t& mac)
+  : state(state)
+  , itf(itf)
+  , router_address(router_address)
+  , host_prefix(host_prefix)
+  , hostname(hostname)
+  , mac(mac)
+{
+}
+
+std::string
+dhcp_client::lease_t::to_string() const
+{
+  std::stringstream ss;
+
+  ss << "lease:[" << itf->to_string() << " state: " << state.to_string()
+     << " host: " << host_prefix.to_string() << " router: " << router_address
+     << " mac: " << mac.to_string() << "]";
+
+  return (ss.str());
+}
+
+dhcp_client::event_listener::event_listener()
+  : m_status(rc_t::NOOP)
+{
+}
+
+HW::item<bool>&
+dhcp_client::event_listener::status()
+{
+  return (m_status);
+}
+
+dhcp_client::event_handler::event_handler()
+{
+  OM::register_listener(this);
+  inspect::register_handler({ "dhcp" }, "DHCP clients", this);
+}
+
+void
+dhcp_client::event_handler::handle_replay()
+{
+  m_db.replay();
+}
+
+void
+dhcp_client::event_handler::handle_populate(const client_db::key_t& key)
+{
+  std::shared_ptr<dhcp_client_cmds::dump_cmd> cmd =
+    std::make_shared<dhcp_client_cmds::dump_cmd>();
+
+  HW::enqueue(cmd);
+  HW::write();
+
+  for (auto& record : *cmd) {
+    auto& payload = record.get_payload();
+
+    std::shared_ptr<interface> itf =
+      interface::find(payload.client.sw_if_index);
+
+    if (!itf) {
+      VOM_LOG(log_level_t::ERROR) << "dhcp-client dump:"
+                                  << " itf:" << payload.client.sw_if_index;
+      continue;
+    }
+
+    const dhcp_client::state_t& s =
+      dhcp_client::state_t::from_vpp(payload.lease.state);
+    route::prefix_t pfx(payload.lease.is_ipv6,
+                        (uint8_t*)&payload.lease.host_address.un,
+                        payload.lease.mask_width);
+    std::string hostname =
+      reinterpret_cast<const char*>(payload.lease.hostname);
+    l2_address_t l2(payload.client.id + 1);
+    dhcp_client dc(*itf, hostname, l2, payload.client.set_broadcast_flag,
+                   from_api(payload.client.dscp));
+    dc.lease(std::make_shared<dhcp_client::lease_t>(
+      s, itf, from_bytes(0, (uint8_t*)&payload.lease.router_address.un), pfx,
+      hostname, mac_address_t(payload.lease.host_mac)));
+    OM::commit(key, dc);
+  }
+}
+
+dependency_t
+dhcp_client::event_handler::order() const
+{
+  return (dependency_t::BINDING);
+}
+
+void
+dhcp_client::event_handler::show(std::ostream& os)
+{
+  db_dump(m_db, os);
+}
+
+std::shared_ptr<dhcp_client_cmds::events_cmd>
+dhcp_client::get_event_cmd()
+{
+  if (m_s_event_cmd.expired()) {
+    std::shared_ptr<dhcp_client_cmds::events_cmd> c =
+      std::make_shared<dhcp_client_cmds::events_cmd>(m_listener);
+
+    m_s_event_cmd = c;
+
+    HW::enqueue(c);
+    HW::write();
+
+    return c;
+  }
+
+  return (m_s_event_cmd.lock());
+}
+
+void
+dhcp_client::handle_dhcp_event(std::shared_ptr<lease_t> lease)
+{
+  m_lease = lease;
+  if (m_evl)
+    m_evl->handle_dhcp_event(m_lease);
+}
+
+void
+dhcp_client::dhcp_client_listener::handle_dhcp_event(std::shared_ptr<lease_t> e)
+{
+  /*
+   * Find the client the event references
+   */
+  std::shared_ptr<dhcp_client> client = find(e->itf->key());
+
+  if (client) {
+    client->handle_dhcp_event(e);
+  }
+}
+
+}; // namespace VOM
+
+/*
+ * fd.io coding-style-patch-verification: OFF
+ *
+ * Local Variables:
+ * eval: (c-set-style "mozilla")
+ * End:
+ */