From b0bf038605dc43474bdd9105a5f7162c57ad8bad Mon Sep 17 00:00:00 2001
From: svost <ya.nowa@yandex.ru>
Date: Wed, 18 Mar 2015 17:15:52 +0300
Subject: [PATCH] Replace non-threadsafe gmtime and setlocale

---
 src/bitcoinrpc.cpp |   10 +---------
 src/util.cpp       |   10 ++++++++++
 src/util.h         |    9 +--------
 3 files changed, 12 insertions(+), 17 deletions(-)

diff --git a/src/bitcoinrpc.cpp b/src/bitcoinrpc.cpp
index d944b92..03bd10e 100644
--- a/src/bitcoinrpc.cpp
+++ b/src/bitcoinrpc.cpp
@@ -361,15 +361,7 @@ string HTTPPost(const string& strMsg, const map<string,string>& mapRequestHeader
 
 string rfc1123Time()
 {
-    char buffer[64];
-    time_t now;
-    time(&now);
-    struct tm* now_gmt = gmtime(&now);
-    string locale(setlocale(LC_TIME, NULL));
-    setlocale(LC_TIME, "C"); // we want POSIX (aka "C") weekday/month strings
-    strftime(buffer, sizeof(buffer), "%a, %d %b %Y %H:%M:%S +0000", now_gmt);
-    setlocale(LC_TIME, locale.c_str());
-    return string(buffer);
+    return DateTimeStrFormat("%a, %d %b %Y %H:%M:%S +0000", GetTime());
 }
 
 static string HTTPReply(int nStatus, const string& strMsg, bool keepalive)
diff --git a/src/util.cpp b/src/util.cpp
index 481da94..8b0afa9 100644
--- a/src/util.cpp
+++ b/src/util.cpp
@@ -1464,3 +1464,13 @@ bool NewThread(void(*pfn)(void*), void* parg)
     }
     return true;
 }
+
+std::string DateTimeStrFormat(const char* pszFormat, int64_t nTime)
+{
+    // std::locale takes ownership of the pointer
+    std::locale loc(std::locale::classic(), new boost::posix_time::time_facet(pszFormat));
+    std::stringstream ss;
+    ss.imbue(loc);
+    ss << boost::posix_time::from_time_t(nTime);
+    return ss.str();
+}
\ No newline at end of file
diff --git a/src/util.h b/src/util.h
index 77b439e..53dc567 100644
--- a/src/util.h
+++ b/src/util.h
@@ -351,14 +351,7 @@ inline int64_t GetTimeMillis()
             boost::posix_time::ptime(boost::gregorian::date(1970,1,1))).total_milliseconds();
 }
 
-inline std::string DateTimeStrFormat(const char* pszFormat, int64_t nTime)
-{
-    time_t n = nTime;
-    struct tm* ptmTime = gmtime(&n);
-    char pszTime[200];
-    strftime(pszTime, sizeof(pszTime), pszFormat, ptmTime);
-    return pszTime;
-}
+std::string DateTimeStrFormat(const char* pszFormat, int64_t nTime);
 
 static const std::string strTimestampFormat = "%Y-%m-%d %H:%M:%S UTC";
 inline std::string DateTimeStrFormat(int64_t nTime)
-- 
1.7.1