From f89faa258404d2e6fd4300990275cd2439e51255 Mon Sep 17 00:00:00 2001
From: Matt Corallo <git@bluematt.me>
Date: Tue, 7 May 2013 18:37:37 +0200
Subject: Call the -alertnotify script when we see a long or invalid fork.

---
 src/main.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'src/main.cpp')

diff --git a/src/main.cpp b/src/main.cpp
index 2e79c874d7..b206b68036 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1395,6 +1395,16 @@ void CheckForkWarningConditions()
 
     if (pindexBestForkTip || nBestInvalidWork > nBestChainWork + (pindexBest->GetBlockWork() * 6).getuint256())
     {
+        if (!fLargeWorkForkFound)
+        {
+            std::string strCmd = GetArg("-alertnotify", "");
+            if (!strCmd.empty())
+            {
+                std::string warning("'Warning: Large-work fork detected. You may need to upgrade, or other nodes may need to upgrade.'");
+                boost::replace_all(strCmd, "%s", warning);
+                boost::thread t(runCommand, strCmd); // thread runs free
+            }
+        }
         fLargeWorkForkFound = true;
         printf("CheckForkWarningConditions: Warning: Displayed transactions may not be correct! You may need to upgrade, or other nodes may need to upgrade.\n");
     } else
-- 
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