merge bitcoin#21732: Move common init code to init/common

src/Makefile.am

@@ -216,6 +216,7 @@ BITCOIN_CORE_H = \
   index/txindex.h \
   indirectmap.h \
   init.h \
+  init/common.h \
   interfaces/chain.h \
   interfaces/coinjoin.h \
   interfaces/handler.h \
@@ -731,6 +732,7 @@ libbitcoin_common_a_SOURCES = \
   core_write.cpp \
   deploymentinfo.cpp \
   governance/common.cpp \
+  init/common.cpp \
   key.cpp \
   key_io.cpp \
   merkleblock.cpp \

src/init.cpp

@@ -24,12 +24,12 @@
 #include <hash.h>
 #include <httpserver.h>
 #include <httprpc.h>
+#include <init/common.h>
 #include <interfaces/chain.h>
 #include <index/blockfilterindex.h>
 #include <index/coinstatsindex.h>
 #include <index/txindex.h>
 #include <interfaces/node.h>
-#include <key.h>
 #include <mapport.h>
 #include <miner.h>
 #include <net.h>
@@ -398,7 +398,7 @@ void Shutdown(NodeContext& node)
         PrepareShutdown(node);
     }
     // Shutdown part 2: delete wallet instance
-    ECC_Stop();
+    init::UnsetGlobals();
     node.mempool.reset();
     node.fee_estimator.reset();
     node.chainman.reset();
@@ -489,6 +489,8 @@ void SetupServerArgs(NodeContext& node)
     SetupHelpOptions(argsman);
     argsman.AddArg("-help-debug", "Print help message with debugging options and exit", ArgsManager::ALLOW_ANY, OptionsCategory::DEBUG_TEST);
 
+    init::AddLoggingArgs(argsman);
+
     const auto defaultBaseParams = CreateBaseChainParams(CBaseChainParams::MAIN);
     const auto testnetBaseParams = CreateBaseChainParams(CBaseChainParams::TESTNET);
     const auto regtestBaseParams = CreateBaseChainParams(CBaseChainParams::REGTEST);
@@ -523,7 +525,6 @@ void SetupServerArgs(NodeContext& node)
     argsman.AddArg("-datadir=<dir>", "Specify data directory", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
     argsman.AddArg("-dbbatchsize", strprintf("Maximum database write batch size in bytes (default: %u)", nDefaultDbBatchSize), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::OPTIONS);
     argsman.AddArg("-dbcache=<n>", strprintf("Maximum database cache size <n> MiB (%d to %d, default: %d). In addition, unused mempool memory is shared for this cache (see -maxmempool).", nMinDbCache, nMaxDbCache, nDefaultDbCache), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
-    argsman.AddArg("-debuglogfile=<file>", strprintf("Specify location of debug log file. Relative paths will be prefixed by a net-specific datadir location. (-nodebuglogfile to disable; default: %s)", DEFAULT_DEBUGLOGFILE), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
     argsman.AddArg("-includeconf=<file>", "Specify additional configuration file, relative to the -datadir path (only useable from configuration file, not command line)", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
     argsman.AddArg("-loadblock=<file>", "Imports blocks from external file on startup", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
     argsman.AddArg("-maxmempool=<n>", strprintf("Keep the transaction memory pool below <n> megabytes (default: %u)", DEFAULT_MAX_MEMPOOL_SIZE), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
@@ -714,27 +715,13 @@ void SetupServerArgs(NodeContext& node)
     argsman.AddArg("-watchquorums=<n>", strprintf("Watch and validate quorum communication (default: %u)", llmq::DEFAULT_WATCH_QUORUMS), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
     argsman.AddArg("-addrmantest", "Allows to test address relay on localhost", ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
     argsman.AddArg("-capturemessages", "Capture all P2P messages to disk", ArgsManager::ALLOW_BOOL | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
-    argsman.AddArg("-debug=<category>", "Output debugging information (default: -nodebug, supplying <category> is optional). "
-        "If <category> is not supplied or if <category> = 1, output all debugging information. <category> can be: " + LogInstance().LogCategoriesString() + ". This option can be specified multiple times to output multiple categories.", ArgsManager::ALLOW_ANY, OptionsCategory::DEBUG_TEST);
-    argsman.AddArg("-debugexclude=<category>", strprintf("Exclude debugging information for a category. Can be used in conjunction with -debug=1 to output debug logs for all categories except the specified category. This option can be specified multiple times to exclude multiple categories."), ArgsManager::ALLOW_ANY, OptionsCategory::DEBUG_TEST);
     argsman.AddArg("-disablegovernance", strprintf("Disable governance validation (0-1, default: %u)", 0), ArgsManager::ALLOW_ANY, OptionsCategory::DEBUG_TEST);
-    argsman.AddArg("-logips", strprintf("Include IP addresses in debug output (default: %u)", DEFAULT_LOGIPS), ArgsManager::ALLOW_ANY, OptionsCategory::DEBUG_TEST);
-    argsman.AddArg("-logsourcelocations", strprintf("Prepend debug output with name of the originating source location (source file, line number and function name) (default: %u)", DEFAULT_LOGSOURCELOCATIONS), ArgsManager::ALLOW_ANY, OptionsCategory::DEBUG_TEST);
-    argsman.AddArg("-logtimemicros", strprintf("Add microsecond precision to debug timestamps (default: %u)", DEFAULT_LOGTIMEMICROS), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
-    argsman.AddArg("-logtimestamps", strprintf("Prepend debug output with timestamp (default: %u)", DEFAULT_LOGTIMESTAMPS), ArgsManager::ALLOW_ANY, OptionsCategory::DEBUG_TEST);
-#ifdef HAVE_THREAD_LOCAL
-    argsman.AddArg("-logthreadnames", strprintf("Prepend debug output with name of the originating thread (only available on platforms supporting thread_local) (default: %u)", DEFAULT_LOGTHREADNAMES), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
-#else
-    hidden_args.emplace_back("-logthreadnames");
-#endif
     argsman.AddArg("-maxsigcachesize=<n>", strprintf("Limit sum of signature cache and script execution cache sizes to <n> MiB (default: %u)", DEFAULT_MAX_SIG_CACHE_SIZE), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
     argsman.AddArg("-maxtipage=<n>", strprintf("Maximum tip age in seconds to consider node in initial block download (default: %u)", DEFAULT_MAX_TIP_AGE), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
     argsman.AddArg("-mocktime=<n>", "Replace actual time with " + UNIX_EPOCH_TIME + "(default: 0)", ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
     argsman.AddArg("-minsporkkeys=<n>", "Overrides minimum spork signers to change spork value. Only useful for regtest and devnet. Using this on mainnet or testnet will ban you.", ArgsManager::ALLOW_ANY, OptionsCategory::DEBUG_TEST);
     argsman.AddArg("-printpriority", strprintf("Log transaction fee per kB when mining blocks (default: %u)", DEFAULT_PRINTPRIORITY), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
-    argsman.AddArg("-printtoconsole", "Send trace/debug info to console (default: 1 when no -daemon. To disable logging to file, set -nodebuglogfile)", ArgsManager::ALLOW_ANY, OptionsCategory::DEBUG_TEST);
     argsman.AddArg("-pushversion", "Protocol version to report to other nodes", ArgsManager::ALLOW_ANY, OptionsCategory::DEBUG_TEST);
-    argsman.AddArg("-shrinkdebugfile", "Shrink debug.log file on client startup (default: 1 when no -debug)", ArgsManager::ALLOW_ANY, OptionsCategory::DEBUG_TEST);
     argsman.AddArg("-sporkaddr=<dashaddress>", "Override spork address. Only useful for regtest and devnet. Using this on mainnet or testnet will ban you.", ArgsManager::ALLOW_ANY, OptionsCategory::DEBUG_TEST);
     argsman.AddArg("-sporkkey=<privatekey>", "Set the private key to be used for signing spork messages.", ArgsManager::ALLOW_ANY | ArgsManager::SENSITIVE, OptionsCategory::DEBUG_TEST);
     argsman.AddArg("-uacomment=<cmt>", "Append comment to the user agent string", ArgsManager::ALLOW_ANY, OptionsCategory::DEBUG_TEST);
@@ -893,31 +880,6 @@ static void PeriodicStats(ArgsManager& args, ChainstateManager& chainman, const
     }
 }
 
-/** Sanity checks
- *  Ensure that Dash Core is running in a usable environment with all
- *  necessary library support.
- */
-static bool InitSanityCheck()
-{
-    if (!ECC_InitSanityCheck()) {
-        return InitError(Untranslated("Elliptic curve cryptography sanity check failure. Aborting."));
-    }
-
-    if (!BLSInit()) {
-        return false;
-    }
-
-    if (!Random_SanityCheck()) {
-        return InitError(Untranslated("OS cryptographic RNG sanity check failure. Aborting."));
-    }
-
-    if (!ChronoSanityCheck()) {
-        return InitError(Untranslated("Clock epoch mismatch. Aborting."));
-    }
-
-    return true;
-}
-
 static bool AppInitServers(NodeContext& node)
 {
     const ArgsManager& args = *Assert(node.args);
@@ -1040,25 +1002,8 @@ void InitParameterInteraction(ArgsManager& args)
  */
 void InitLogging(const ArgsManager& args)
 {
-    LogInstance().m_print_to_file = !args.IsArgNegated("-debuglogfile");
+    init::SetLoggingOptions(args);
-    LogInstance().m_file_path = AbsPathForConfigVal(args.GetArg("-debuglogfile", DEFAULT_DEBUGLOGFILE));
+    init::LogPackageVersion();
-    LogInstance().m_print_to_console = args.GetBoolArg("-printtoconsole", !args.GetBoolArg("-daemon", false));
-    LogInstance().m_log_timestamps = args.GetBoolArg("-logtimestamps", DEFAULT_LOGTIMESTAMPS);
-    LogInstance().m_log_time_micros = args.GetBoolArg("-logtimemicros", DEFAULT_LOGTIMEMICROS);
-#ifdef HAVE_THREAD_LOCAL
-    LogInstance().m_log_threadnames = args.GetBoolArg("-logthreadnames", DEFAULT_LOGTHREADNAMES);
-#endif
-    LogInstance().m_log_sourcelocations = args.GetBoolArg("-logsourcelocations", DEFAULT_LOGSOURCELOCATIONS);
-
-    fLogIPs = args.GetBoolArg("-logips", DEFAULT_LOGIPS);
-
-    std::string version_string = FormatFullVersion();
-#ifdef DEBUG_CORE
-    version_string += " (debug build)";
-#else
-    version_string += " (release build)";
-#endif
-    LogPrintf(PACKAGE_NAME " version %s\n", version_string);
 }
 
 namespace { // Variables internal to initialization process only
@@ -1248,26 +1193,7 @@ bool AppInitParameterInteraction(const ArgsManager& args)
         InitWarning(strprintf(_("Reducing -maxconnections from %d to %d, because of system limitations."), nUserMaxConnections, nMaxConnections));
 
     // ********************************************************* Step 3: parameter-to-internal-flags
-    if (args.IsArgSet("-debug")) {
+    init::SetLoggingCategories(args);
-        // Special-case: if -debug=0/-nodebug is set, turn off debugging messages
-        const std::vector<std::string> categories = args.GetArgs("-debug");
-
-        if (std::none_of(categories.begin(), categories.end(),
-            [](std::string cat){return cat == "0" || cat == "none";})) {
-            for (const auto& cat : categories) {
-                if (!LogInstance().EnableCategory(cat)) {
-                    InitWarning(strprintf(_("Unsupported logging category %s=%s."), "-debug", cat));
-                }
-            }
-        }
-    }
-
-    // Now remove the logging categories which were explicitly excluded
-    for (const std::string& cat : args.GetArgs("-debugexclude")) {
-        if (!LogInstance().DisableCategory(cat)) {
-            InitWarning(strprintf(_("Unsupported logging category %s=%s."), "-debugexclude", cat));
-        }
-    }
 
     fCheckBlockIndex = args.GetBoolArg("-checkblockindex", chainparams.DefaultConsistencyChecks());
     fCheckpointsEnabled = args.GetBoolArg("-checkpoints", DEFAULT_CHECKPOINTS_ENABLED);
@@ -1455,15 +1381,11 @@ bool AppInitSanityChecks()
 {
     // ********************************************************* Step 4: sanity checks
 
-    // Initialize elliptic curve code
+    init::SetGlobals();
-    std::string sha256_algo = SHA256AutoDetect();
-    LogPrintf("Using the '%s' SHA256 implementation\n", sha256_algo);
-    RandomInit();
-    ECC_Start();
 
-    // Sanity check
+    if (!init::SanityChecks()) {
-    if (!InitSanityCheck())
         return InitError(strprintf(_("Initialization sanity check failed. %s is shutting down."), PACKAGE_NAME));
+    }
 
     // Probe the data directory lock to give an early error message, if possible
     // We cannot hold the data directory lock here, as the forking for daemon() hasn't yet happened,
@@ -1503,37 +1425,10 @@ bool AppInitMain(NodeContext& node, interfaces::BlockAndHeaderTipInfo* tip_info)
         // Detailed error printed inside CreatePidFile().
         return false;
     }
-    if (LogInstance().m_print_to_file) {
+    if (!init::StartLogging(args)) {
-        if (args.GetBoolArg("-shrinkdebugfile", LogInstance().DefaultShrinkDebugFile())) {
+        // Detailed error printed inside StartLogging().
-            // Do this first since it both loads a bunch of debug.log into memory,
+        return false;
-            // and because this needs to happen before any other debug.log printing
-            LogInstance().ShrinkDebugFile();
-        }
     }
-    if (!LogInstance().StartLogging()) {
-        return InitError(strprintf(Untranslated("Could not open debug log file %s"),
-            LogInstance().m_file_path.string()));
-    }
-
-    if (!LogInstance().m_log_timestamps)
-        LogPrintf("Startup time: %s\n", FormatISO8601DateTime(GetTime()));
-    LogPrintf("Default data directory %s\n", GetDefaultDataDir().string());
-    LogPrintf("Using data directory %s\n", GetDataDir().string());
-
-    // Only log conf file usage message if conf file actually exists.
-    fs::path config_file_path = GetConfigFile(args.GetArg("-conf", BITCOIN_CONF_FILENAME));
-    if (fs::exists(config_file_path)) {
-        LogPrintf("Config file: %s\n", config_file_path.string());
-    } else if (args.IsArgSet("-conf")) {
-        // Warn if no conf file exists at path provided by user
-        InitWarning(strprintf(_("The specified config file %s does not exist"), config_file_path.string()));
-    } else {
-        // Not categorizing as "Warning" because it's the default behavior
-        LogPrintf("Config file: %s (not found, skipping)\n", config_file_path.string());
-    }
-
-    // Log the config arguments to debug.log
-    args.LogArgs();
 
     LogPrintf("Using at most %i automatic connections (%i file descriptors available)\n", nMaxConnections, nFD);
 

src/init/common.cpp

@@ -0,0 +1,164 @@
+// Copyright (c) 2021 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#if defined(HAVE_CONFIG_H)
+#include <config/bitcoin-config.h>
+#endif
+
+#include <bls/bls.h>
+#include <clientversion.h>
+#include <crypto/sha256.h>
+#include <key.h>
+#include <logging.h>
+#include <node/ui_interface.h>
+#include <pubkey.h>
+#include <random.h>
+#include <util/system.h>
+#include <util/time.h>
+#include <util/translation.h>
+
+#include <memory>
+
+namespace init {
+void SetGlobals()
+{
+    std::string sha256_algo = SHA256AutoDetect();
+    LogPrintf("Using the '%s' SHA256 implementation\n", sha256_algo);
+    RandomInit();
+    ECC_Start();
+}
+
+void UnsetGlobals()
+{
+    ECC_Stop();
+}
+
+bool SanityChecks()
+{
+    if (!ECC_InitSanityCheck()) {
+        return InitError(Untranslated("Elliptic curve cryptography sanity check failure. Aborting."));
+    }
+
+    if (!BLSInit()) {
+        return false;
+    }
+
+    if (!Random_SanityCheck()) {
+        return InitError(Untranslated("OS cryptographic RNG sanity check failure. Aborting."));
+    }
+
+    if (!ChronoSanityCheck()) {
+        return InitError(Untranslated("Clock epoch mismatch. Aborting."));
+    }
+
+    return true;
+}
+
+void AddLoggingArgs(ArgsManager& argsman)
+{
+    argsman.AddArg("-debuglogfile=<file>", strprintf("Specify location of debug log file. Relative paths will be prefixed by a net-specific datadir location. (-nodebuglogfile to disable; default: %s)", DEFAULT_DEBUGLOGFILE), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
+    argsman.AddArg("-debug=<category>", "Output debugging information (default: -nodebug, supplying <category> is optional). "
+        "If <category> is not supplied or if <category> = 1, output all debugging information. <category> can be: " + LogInstance().LogCategoriesString() + ". This option can be specified multiple times to output multiple categories.",
+        ArgsManager::ALLOW_ANY, OptionsCategory::DEBUG_TEST);
+    argsman.AddArg("-debugexclude=<category>", strprintf("Exclude debugging information for a category. Can be used in conjunction with -debug=1 to output debug logs for all categories except the specified category. This option can be specified multiple times to exclude multiple categories."), ArgsManager::ALLOW_ANY, OptionsCategory::DEBUG_TEST);
+    argsman.AddArg("-logips", strprintf("Include IP addresses in debug output (default: %u)", DEFAULT_LOGIPS), ArgsManager::ALLOW_ANY, OptionsCategory::DEBUG_TEST);
+    argsman.AddArg("-logtimestamps", strprintf("Prepend debug output with timestamp (default: %u)", DEFAULT_LOGTIMESTAMPS), ArgsManager::ALLOW_ANY, OptionsCategory::DEBUG_TEST);
+#ifdef HAVE_THREAD_LOCAL
+    argsman.AddArg("-logthreadnames", strprintf("Prepend debug output with name of the originating thread (only available on platforms supporting thread_local) (default: %u)", DEFAULT_LOGTHREADNAMES), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
+#else
+    argsman.AddHiddenArgs({"-logthreadnames"});
+#endif
+    argsman.AddArg("-logsourcelocations", strprintf("Prepend debug output with name of the originating source location (source file, line number and function name) (default: %u)", DEFAULT_LOGSOURCELOCATIONS), ArgsManager::ALLOW_ANY, OptionsCategory::DEBUG_TEST);
+    argsman.AddArg("-logtimemicros", strprintf("Add microsecond precision to debug timestamps (default: %u)", DEFAULT_LOGTIMEMICROS), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
+    argsman.AddArg("-printtoconsole", "Send trace/debug info to console (default: 1 when no -daemon. To disable logging to file, set -nodebuglogfile)", ArgsManager::ALLOW_ANY, OptionsCategory::DEBUG_TEST);
+    argsman.AddArg("-shrinkdebugfile", "Shrink debug.log file on client startup (default: 1 when no -debug)", ArgsManager::ALLOW_ANY, OptionsCategory::DEBUG_TEST);
+}
+
+void SetLoggingOptions(const ArgsManager& args)
+{
+    LogInstance().m_print_to_file = !args.IsArgNegated("-debuglogfile");
+    LogInstance().m_file_path = AbsPathForConfigVal(args.GetArg("-debuglogfile", DEFAULT_DEBUGLOGFILE));
+    LogInstance().m_print_to_console = args.GetBoolArg("-printtoconsole", !args.GetBoolArg("-daemon", false));
+    LogInstance().m_log_timestamps = args.GetBoolArg("-logtimestamps", DEFAULT_LOGTIMESTAMPS);
+    LogInstance().m_log_time_micros = args.GetBoolArg("-logtimemicros", DEFAULT_LOGTIMEMICROS);
+#ifdef HAVE_THREAD_LOCAL
+    LogInstance().m_log_threadnames = args.GetBoolArg("-logthreadnames", DEFAULT_LOGTHREADNAMES);
+#endif
+    LogInstance().m_log_sourcelocations = args.GetBoolArg("-logsourcelocations", DEFAULT_LOGSOURCELOCATIONS);
+
+    fLogIPs = args.GetBoolArg("-logips", DEFAULT_LOGIPS);
+}
+
+void SetLoggingCategories(const ArgsManager& args)
+{
+    if (args.IsArgSet("-debug")) {
+        // Special-case: if -debug=0/-nodebug is set, turn off debugging messages
+        const std::vector<std::string> categories = args.GetArgs("-debug");
+
+        if (std::none_of(categories.begin(), categories.end(),
+            [](std::string cat){return cat == "0" || cat == "none";})) {
+            for (const auto& cat : categories) {
+                if (!LogInstance().EnableCategory(cat)) {
+                    InitWarning(strprintf(_("Unsupported logging category %s=%s."), "-debug", cat));
+                }
+            }
+        }
+    }
+
+    // Now remove the logging categories which were explicitly excluded
+    for (const std::string& cat : args.GetArgs("-debugexclude")) {
+        if (!LogInstance().DisableCategory(cat)) {
+            InitWarning(strprintf(_("Unsupported logging category %s=%s."), "-debugexclude", cat));
+        }
+    }
+}
+
+bool StartLogging(const ArgsManager& args)
+{
+    if (LogInstance().m_print_to_file) {
+        if (args.GetBoolArg("-shrinkdebugfile", LogInstance().DefaultShrinkDebugFile())) {
+            // Do this first since it both loads a bunch of debug.log into memory,
+            // and because this needs to happen before any other debug.log printing
+            LogInstance().ShrinkDebugFile();
+        }
+    }
+    if (!LogInstance().StartLogging()) {
+            return InitError(strprintf(Untranslated("Could not open debug log file %s"),
+                LogInstance().m_file_path.string()));
+    }
+
+    if (!LogInstance().m_log_timestamps)
+        LogPrintf("Startup time: %s\n", FormatISO8601DateTime(GetTime()));
+    LogPrintf("Default data directory %s\n", GetDefaultDataDir().string());
+    LogPrintf("Using data directory %s\n", GetDataDir().string());
+
+    // Only log conf file usage message if conf file actually exists.
+    fs::path config_file_path = GetConfigFile(args.GetArg("-conf", BITCOIN_CONF_FILENAME));
+    if (fs::exists(config_file_path)) {
+        LogPrintf("Config file: %s\n", config_file_path.string());
+    } else if (args.IsArgSet("-conf")) {
+        // Warn if no conf file exists at path provided by user
+        InitWarning(strprintf(_("The specified config file %s does not exist"), config_file_path.string()));
+    } else {
+        // Not categorizing as "Warning" because it's the default behavior
+        LogPrintf("Config file: %s (not found, skipping)\n", config_file_path.string());
+    }
+
+    // Log the config arguments to debug.log
+    args.LogArgs();
+
+    return true;
+}
+
+void LogPackageVersion()
+{
+    std::string version_string = FormatFullVersion();
+#ifdef DEBUG_CORE
+    version_string += " (debug build)";
+#else
+    version_string += " (release build)";
+#endif
+    LogPrintf(PACKAGE_NAME " version %s\n", version_string);
+}
+} // namespace init

src/init/common.h

@@ -0,0 +1,28 @@
+// Copyright (c) 2021 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+//! @file
+//! @brief Common init functions shared by bitcoin-node, bitcoin-wallet, etc.
+
+#ifndef BITCOIN_INIT_COMMON_H
+#define BITCOIN_INIT_COMMON_H
+
+class ArgsManager;
+
+namespace init {
+void SetGlobals();
+void UnsetGlobals();
+/**
+ *  Ensure a usable environment with all
+ *  necessary library support.
+ */
+bool SanityChecks();
+void AddLoggingArgs(ArgsManager& args);
+void SetLoggingOptions(const ArgsManager& args);
+void SetLoggingCategories(const ArgsManager& args);
+bool StartLogging(const ArgsManager& args);
+void LogPackageVersion();
+} // namespace init
+
+#endif // BITCOIN_INIT_COMMON_H