Merge 22372 via multinotify

src/init.cpp

@@ -718,9 +718,8 @@ static void BlockNotifyGenesisWait(const CBlockIndex* pBlockIndex)
 #if HAVE_SYSTEM
 static void StartupNotify(const ArgsManager& args)
 {
-    std::string cmd = args.GetArg("-startupnotify", "");
-    if (!cmd.empty()) {
-        std::thread t(runCommand, cmd);
+    for (const std::string& command : args.GetArgs("-startupnotify")) {
+        std::thread t(runCommand, command);
         t.detach(); // thread runs free
     }
 }
@@ -1784,14 +1783,17 @@ bool AppInitMain(NodeContext& node, interfaces::BlockAndHeaderTipInfo* tip_info)
     }
 
 #if HAVE_SYSTEM
-    const std::string block_notify = args.GetArg("-blocknotify", "");
-    if (!block_notify.empty()) {
-        uiInterface.NotifyBlockTip_connect([block_notify](SynchronizationState sync_state, const CBlockIndex* pBlockIndex) {
+    if (args.IsArgSet("-blocknotify")) {
+        auto blocknotify_commands = args.GetArgs("-blocknotify");
+        uiInterface.NotifyBlockTip_connect([blocknotify_commands](SynchronizationState sync_state, const CBlockIndex* pBlockIndex) {
             if (sync_state != SynchronizationState::POST_INIT || !pBlockIndex) return;
-            std::string command = block_notify;
-            ReplaceAll(command, "%s", pBlockIndex->GetBlockHash().GetHex());
-            std::thread t(runCommand, command);
-            t.detach(); // thread runs free
+            const std::string blockhash_hex = pBlockIndex->GetBlockHash().GetHex();
+            for (std::string command : blocknotify_commands) {
+                ReplaceAll(command, "%s", blockhash_hex);
+
+                std::thread t(runCommand, command);
+                t.detach(); // thread runs free
+            }
         });
     }
 #endif

src/node/kernel_notifications.cpp

@@ -30,8 +30,7 @@ using util::ReplaceAll;
 static void AlertNotify(const std::string& strMessage)
 {
 #if HAVE_SYSTEM
-    std::string strCmd = gArgs.GetArg("-alertnotify", "");
-    if (strCmd.empty()) return;
+    if (!gArgs.IsArgSet("-alertnotify")) return;
 
     // Alert text should be plain ascii coming from a trusted source, but to
     // be safe we first strip anything not in safeChars, then add single quotes around
@@ -39,10 +38,13 @@ static void AlertNotify(const std::string& strMessage)
     std::string singleQuote("'");
     std::string safeStatus = SanitizeString(strMessage);
     safeStatus = singleQuote+safeStatus+singleQuote;
-    ReplaceAll(strCmd, "%s", safeStatus);
 
-    std::thread t(runCommand, strCmd);
-    t.detach(); // thread runs free
+    for (std::string command : gArgs.GetArgs("-alertnotify")) {
+        ReplaceAll(command, "%s", safeStatus);
+
+        std::thread t(runCommand, command);
+        t.detach(); // thread runs free
+    }
 #endif
 }
 

src/wallet/wallet.cpp

@@ -1223,29 +1223,36 @@ CWalletTx* CWallet::AddToWallet(CTransactionRef tx, const TxState& state, const
 
 #if HAVE_SYSTEM
     // notify an external script when a wallet transaction comes in or is updated
-    std::string strCmd = m_notify_tx_changed_script;
-
-    if (!strCmd.empty())
-    {
-        ReplaceAll(strCmd, "%s", hash.GetHex());
-        if (auto* conf = wtx.state<TxStateConfirmed>())
-        {
-            ReplaceAll(strCmd, "%b", conf->confirmed_block_hash.GetHex());
-            ReplaceAll(strCmd, "%h", ToString(conf->confirmed_block_height));
-        } else {
-            ReplaceAll(strCmd, "%b", "unconfirmed");
-            ReplaceAll(strCmd, "%h", "-1");
-        }
-#ifndef WIN32
+    if (!m_notify_tx_changed_scripts.empty()) {
+#ifdef WIN32
         // Substituting the wallet name isn't currently supported on windows
         // because windows shell escaping has not been implemented yet:
         // https://github.com/bitcoin/bitcoin/pull/13339#issuecomment-537384875
         // A few ways it could be implemented in the future are described in:
         // https://github.com/bitcoin/bitcoin/pull/13339#issuecomment-461288094
-        ReplaceAll(strCmd, "%w", ShellEscape(GetName()));
+        const std::string walletname_escaped = "wallet_name_substitution_is_not_available_on_Windows";
+#else
+        const std::string walletname_escaped = ShellEscape(GetName());
 #endif
-        std::thread t(runCommand, strCmd);
-        t.detach(); // thread runs free
+        const std::string txid_hex = hash.GetHex();
+        std::string blockhash_hex, blockheight_str;
+        if (auto* conf = wtx.state<TxStateConfirmed>()) {
+            blockhash_hex = conf->confirmed_block_hash.GetHex();
+            blockheight_str = ToString(conf->confirmed_block_height);
+        } else {
+            blockhash_hex = "unconfirmed";
+            blockheight_str = "-1";
+        }
+
+        for (std::string command : m_notify_tx_changed_scripts) {
+            ReplaceAll(command, "%s", txid_hex);
+            ReplaceAll(command, "%b", blockhash_hex);
+            ReplaceAll(command, "%h", blockheight_str);
+            ReplaceAll(command, "%w", walletname_escaped);
+
+            std::thread t(runCommand, command);
+            t.detach(); // thread runs free
+        }
     }
 #endif
 
@@ -3058,7 +3065,7 @@ std::shared_ptr<CWallet> CWallet::Create(WalletContext& context, const std::stri
     // should be possible to use std::allocate_shared.
     std::shared_ptr<CWallet> walletInstance(new CWallet(chain, name, std::move(database)), FlushAndDeleteWallet);
     walletInstance->m_keypool_size = std::max(args.GetIntArg("-keypool", DEFAULT_KEYPOOL_SIZE), int64_t{1});
-    walletInstance->m_notify_tx_changed_script = args.GetArg("-walletnotify", "");
+    walletInstance->m_notify_tx_changed_scripts = args.GetArgs("-walletnotify");
 
     // Load wallet
     bool rescan_required = false;

src/wallet/wallet.h

@@ -754,7 +754,7 @@ public:
     int64_t m_keypool_size{DEFAULT_KEYPOOL_SIZE};
 
     /** Notify external script when a wallet transaction comes in or is updated (handled by -walletnotify) */
-    std::string m_notify_tx_changed_script;
+    std::vector<std::string> m_notify_tx_changed_scripts;
 
     size_t KeypoolCountExternalKeys() const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
     bool TopUpKeyPool(unsigned int kpSize = 0);