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Merge #10939: [init] Check non-emptiness of -blocknotify command prior to executing

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cffe85f Skip sys::system(...) call in case of empty command (practicalswift)
6fb8f5f Check that -blocknotify command is non-empty before executing (practicalswift)

Pull request description:

  Check that `-blocknotify` command is non-empty before executing.

  To make the `BlockNotifyCallback(...)` (`-blocknotify`) behaviour consistent with that of:
  * `AlertNotify(...)` (`-alertnotify`)
  * `AddToWallet(...)` (`-walletnotify`)

Tree-SHA512: 18272166793a5a8b9cc2a727bfbcea53d38c329a55bc975c02db601329d608a61c20e026ce4b616193ecd3810dca4d3e2cb3bf773898a51872008a8dba96763e
This commit is contained in:
Wladimir J. van der Laan 2017-10-04 14:53:26 +02:00
commit a1f7f18709
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3 changed files with 6 additions and 4 deletions
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3
src/init.cpp
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@ -537,10 +537,11 @@ static void BlockNotifyCallback(bool initialSync, const CBlockIndex *pBlockIndex
return;
std::string strCmd = gArgs.GetArg("-blocknotify", "");
if (!strCmd.empty()) {
boost::replace_all(strCmd, "%s", pBlockIndex->GetBlockHash().GetHex());
boost::thread t(runCommand, strCmd); // thread runs free
}
}
static bool fHaveGenesis = false;
static boost::mutex cs_GenesisWait;

1
src/util.cpp
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@ -810,6 +810,7 @@ fs::path GetSpecialFolderPath(int nFolder, bool fCreate)
void runCommand(const std::string& strCommand)
{
if (strCommand.empty()) return;
int nErr = ::system(strCommand.c_str());
if (nErr)
LogPrintf("runCommand error: system(%s) returned %d\n", strCommand, nErr);