1  // Copyright (c) 2021-2022 The Bitcoin Core developers
 2  // Distributed under the MIT software license, see the accompanying
 3  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 4  
 5  #include <init.h>
 6  #include <interfaces/chain.h>
 7  #include <interfaces/echo.h>
 8  #include <interfaces/init.h>
 9  #include <interfaces/ipc.h>
10  #include <interfaces/node.h>
11  #include <interfaces/wallet.h>
12  #include <node/context.h>
13  #include <util/check.h>
14  
15  #include <memory>
16  
17  namespace init {
18  namespace {
19  const char* EXE_NAME = "bitcoin-node";
20  
21  class BitcoinNodeInit : public interfaces::Init
22  {
23  public:
24      BitcoinNodeInit(node::NodeContext& node, const char* arg0)
25          : m_node(node),
26            m_ipc(interfaces::MakeIpc(EXE_NAME, arg0, *this))
27      {
28          InitContext(m_node);
29          m_node.init = this;
30      }
31      std::unique_ptr<interfaces::Node> makeNode() override { return interfaces::MakeNode(m_node); }
32      std::unique_ptr<interfaces::Chain> makeChain() override { return interfaces::MakeChain(m_node); }
33      std::unique_ptr<interfaces::WalletLoader> makeWalletLoader(interfaces::Chain& chain) override
34      {
35          return MakeWalletLoader(chain, *Assert(m_node.args));
36      }
37      std::unique_ptr<interfaces::Echo> makeEcho() override { return interfaces::MakeEcho(); }
38      interfaces::Ipc* ipc() override { return m_ipc.get(); }
39      node::NodeContext& m_node;
40      std::unique_ptr<interfaces::Ipc> m_ipc;
41  };
42  } // namespace
43  } // namespace init
44  
45  namespace interfaces {
46  std::unique_ptr<Init> MakeNodeInit(node::NodeContext& node, int argc, char* argv[], int& exit_status)
47  {
48      auto init = std::make_unique<init::BitcoinNodeInit>(node, argc > 0 ? argv[0] : "");
49      // Check if bitcoin-node is being invoked as an IPC server. If so, then
50      // bypass normal execution and just respond to requests over the IPC
51      // channel and return null.
52      if (init->m_ipc->startSpawnedProcess(argc, argv, exit_status)) {
53          return nullptr;
54      }
55      return init;
56  }
57  } // namespace interfaces