Move network-time related functions to timedata.cpp/h

The network time-offset-mangement functions from util.cpp are moved to
timedata.(cpp|h). This breaks the dependency of util on netbase.

13 files changed, 118 insertions, 81 deletions

diff --git a/src/Makefile.am b/src/Makefile.am
index 7e7fa0c3ca..cd54b0496a 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -80,6 +80,7 @@ BITCOIN_CORE_H = \
   serialize.h \
   sync.h \
   threadsafety.h \
+  timedata.h \
   tinyformat.h \
   txdb.h \
   txmempool.h \
@@ -129,6 +130,7 @@ libbitcoin_server_a_SOURCES = \
   rpcnet.cpp \
   rpcrawtransaction.cpp \
   rpcserver.cpp \
+  timedata.cpp \
   txdb.cpp \
   txmempool.cpp \
   $(JSON_H) \
diff --git a/src/addrman.h b/src/addrman.h
index 5328a93b45..c4c296560e 100644
--- a/src/addrman.h
+++ b/src/addrman.h
@@ -8,6 +8,7 @@
 #include "netbase.h"
 #include "protocol.h"
 #include "sync.h"
+#include "timedata.h"
 #include "util.h"
 
 #include <map>
diff --git a/src/alert.cpp b/src/alert.cpp
index 638f0d7a1c..258a2b52c4 100644
--- a/src/alert.cpp
+++ b/src/alert.cpp
@@ -8,6 +8,7 @@
 #include "chainparams.h"
 #include "key.h"
 #include "net.h"
+#include "timedata.h"
 #include "ui_interface.h"
 #include "util.h"
 
diff --git a/src/qt/transactiondesc.cpp b/src/qt/transactiondesc.cpp
index 61da3373fd..e48dbcac9d 100644
--- a/src/qt/transactiondesc.cpp
+++ b/src/qt/transactiondesc.cpp
@@ -12,6 +12,7 @@
 #include "main.h"
 #include "paymentserver.h"
 #include "transactionrecord.h"
+#include "timedata.h"
 #include "ui_interface.h"
 #include "wallet.h"
 
diff --git a/src/qt/transactionrecord.cpp b/src/qt/transactionrecord.cpp
index 5a3728f498..eec2b57e8c 100644
--- a/src/qt/transactionrecord.cpp
+++ b/src/qt/transactionrecord.cpp
@@ -5,6 +5,7 @@
 #include "transactionrecord.h"
 
 #include "base58.h"
+#include "timedata.h"
 #include "wallet.h"
 
 #include <stdint.h>
diff --git a/src/rpcmisc.cpp b/src/rpcmisc.cpp
index 5181aa23d8..2694e2bcf1 100644
--- a/src/rpcmisc.cpp
+++ b/src/rpcmisc.cpp
@@ -9,6 +9,7 @@
 #include "net.h"
 #include "netbase.h"
 #include "rpcserver.h"
+#include "timedata.h"
 #include "util.h"
 #ifdef ENABLE_WALLET
 #include "wallet.h"
diff --git a/src/rpcnet.cpp b/src/rpcnet.cpp
index 6fc86eedfb..a54872ccc4 100644
--- a/src/rpcnet.cpp
+++ b/src/rpcnet.cpp
@@ -9,6 +9,7 @@
 #include "netbase.h"
 #include "protocol.h"
 #include "sync.h"
+#include "timedata.h"
 #include "util.h"
 
 #include <boost/foreach.hpp>
diff --git a/src/rpcwallet.cpp b/src/rpcwallet.cpp
index f376ab6b63..4f27cef087 100644
--- a/src/rpcwallet.cpp
+++ b/src/rpcwallet.cpp
@@ -8,6 +8,7 @@
 #include "init.h"
 #include "net.h"
 #include "netbase.h"
+#include "timedata.h"
 #include "util.h"
 #include "wallet.h"
 #include "walletdb.h"
diff --git a/src/timedata.cpp b/src/timedata.cpp
new file mode 100644
index 0000000000..8a095d26dc
--- /dev/null
+++ b/src/timedata.cpp
@@ -0,0 +1,91 @@
+// Copyright (c) 2014 The Bitcoin developers
+// Distributed under the MIT/X11 software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include "timedata.h"
+
+#include "netbase.h"
+#include "sync.h"
+#include "ui_interface.h"
+#include "util.h"
+
+#include <boost/foreach.hpp>
+
+using namespace std;
+
+static CCriticalSection cs_nTimeOffset;
+static int64_t nTimeOffset = 0;
+
+//
+// "Never go to sea with two chronometers; take one or three."
+// Our three time sources are:
+//  - System clock
+//  - Median of other nodes clocks
+//  - The user (asking the user to fix the system clock if the first two disagree)
+//
+//
+int64_t GetTimeOffset()
+{
+    LOCK(cs_nTimeOffset);
+    return nTimeOffset;
+}
+
+int64_t GetAdjustedTime()
+{
+    return GetTime() + GetTimeOffset();
+}
+
+void AddTimeData(const CNetAddr& ip, int64_t nTime)
+{
+    int64_t nOffsetSample = nTime - GetTime();
+
+    LOCK(cs_nTimeOffset);
+    // Ignore duplicates
+    static set<CNetAddr> setKnown;
+    if (!setKnown.insert(ip).second)
+        return;
+
+    // Add data
+    static CMedianFilter<int64_t> vTimeOffsets(200,0);
+    vTimeOffsets.input(nOffsetSample);
+    LogPrintf("Added time data, samples %d, offset %+d (%+d minutes)\n", vTimeOffsets.size(), nOffsetSample, nOffsetSample/60);
+    if (vTimeOffsets.size() >= 5 && vTimeOffsets.size() % 2 == 1)
+    {
+        int64_t nMedian = vTimeOffsets.median();
+        std::vector<int64_t> vSorted = vTimeOffsets.sorted();
+        // Only let other nodes change our time by so much
+        if (abs64(nMedian) < 70 * 60)
+        {
+            nTimeOffset = nMedian;
+        }
+        else
+        {
+            nTimeOffset = 0;
+
+            static bool fDone;
+            if (!fDone)
+            {
+                // If nobody has a time different than ours but within 5 minutes of ours, give a warning
+                bool fMatch = false;
+                BOOST_FOREACH(int64_t nOffset, vSorted)
+                    if (nOffset != 0 && abs64(nOffset) < 5 * 60)
+                        fMatch = true;
+
+                if (!fMatch)
+                {
+                    fDone = true;
+                    string strMessage = _("Warning: Please check that your computer's date and time are correct! If your clock is wrong Bitcoin will not work properly.");
+                    strMiscWarning = strMessage;
+                    LogPrintf("*** %s\n", strMessage);
+                    uiInterface.ThreadSafeMessageBox(strMessage, "", CClientUIInterface::MSG_WARNING);
+                }
+            }
+        }
+        if (fDebug) {
+            BOOST_FOREACH(int64_t n, vSorted)
+                LogPrintf("%+d  ", n);
+            LogPrintf("|  ");
+        }
+        LogPrintf("nTimeOffset = %+d  (%+d minutes)\n", nTimeOffset, nTimeOffset/60);
+    }
+}
diff --git a/src/timedata.h b/src/timedata.h
new file mode 100644
index 0000000000..0e7bdc2c1f
--- /dev/null
+++ b/src/timedata.h
@@ -0,0 +1,17 @@
+// Copyright (c) 2014 The Bitcoin developers
+// Distributed under the MIT/X11 software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#ifndef BITCOIN_TIMEDATA_H
+#define BITCOIN_TIMEDATA_H
+
+#include <stdint.h>
+
+class CNetAddr;
+
+/* Functions to keep track of adjusted P2P time */
+int64_t GetTimeOffset();
+int64_t GetAdjustedTime();
+void AddTimeData(const CNetAddr& ip, int64_t nTime);
+
+#endif
diff --git a/src/util.cpp b/src/util.cpp
index 30590912ff..a19c015da6 100644
--- a/src/util.cpp
+++ b/src/util.cpp
@@ -6,7 +6,6 @@
 #include "util.h"
 
 #include "chainparams.h"
-#include "netbase.h"
 #include "sync.h"
 #include "ui_interface.h"
 #include "uint256.h"
@@ -1157,13 +1156,6 @@ void ShrinkDebugFile()
         fclose(file);
 }
 
-//
-// "Never go to sea with two chronometers; take one or three."
-// Our three time sources are:
-//  - System clock
-//  - Median of other nodes clocks
-//  - The user (asking the user to fix the system clock if the first two disagree)
-//
 static int64_t nMockTime = 0;  // For unit testing
 
 int64_t GetTime()
@@ -1178,75 +1170,6 @@ void SetMockTime(int64_t nMockTimeIn)
     nMockTime = nMockTimeIn;
 }
 
-static CCriticalSection cs_nTimeOffset;
-static int64_t nTimeOffset = 0;
-
-int64_t GetTimeOffset()
-{
-    LOCK(cs_nTimeOffset);
-    return nTimeOffset;
-}
-
-int64_t GetAdjustedTime()
-{
-    return GetTime() + GetTimeOffset();
-}
-
-void AddTimeData(const CNetAddr& ip, int64_t nTime)
-{
-    int64_t nOffsetSample = nTime - GetTime();
-
-    LOCK(cs_nTimeOffset);
-    // Ignore duplicates
-    static set<CNetAddr> setKnown;
-    if (!setKnown.insert(ip).second)
-        return;
-
-    // Add data
-    static CMedianFilter<int64_t> vTimeOffsets(200,0);
-    vTimeOffsets.input(nOffsetSample);
-    LogPrintf("Added time data, samples %d, offset %+d (%+d minutes)\n", vTimeOffsets.size(), nOffsetSample, nOffsetSample/60);
-    if (vTimeOffsets.size() >= 5 && vTimeOffsets.size() % 2 == 1)
-    {
-        int64_t nMedian = vTimeOffsets.median();
-        std::vector<int64_t> vSorted = vTimeOffsets.sorted();
-        // Only let other nodes change our time by so much
-        if (abs64(nMedian) < 70 * 60)
-        {
-            nTimeOffset = nMedian;
-        }
-        else
-        {
-            nTimeOffset = 0;
-
-            static bool fDone;
-            if (!fDone)
-            {
-                // If nobody has a time different than ours but within 5 minutes of ours, give a warning
-                bool fMatch = false;
-                BOOST_FOREACH(int64_t nOffset, vSorted)
-                    if (nOffset != 0 && abs64(nOffset) < 5 * 60)
-                        fMatch = true;
-
-                if (!fMatch)
-                {
-                    fDone = true;
-                    string strMessage = _("Warning: Please check that your computer's date and time are correct! If your clock is wrong Bitcoin will not work properly.");
-                    strMiscWarning = strMessage;
-                    LogPrintf("*** %s\n", strMessage);
-                    uiInterface.ThreadSafeMessageBox(strMessage, "", CClientUIInterface::MSG_WARNING);
-                }
-            }
-        }
-        if (fDebug) {
-            BOOST_FOREACH(int64_t n, vSorted)
-                LogPrintf("%+d  ", n);
-            LogPrintf("|  ");
-        }
-        LogPrintf("nTimeOffset = %+d  (%+d minutes)\n", nTimeOffset, nTimeOffset/60);
-    }
-}
-
 uint32_t insecure_rand_Rz = 11;
 uint32_t insecure_rand_Rw = 11;
 void seed_insecure_rand(bool fDeterministic)
diff --git a/src/util.h b/src/util.h
index 5eb6f03826..6057c72e66 100644
--- a/src/util.h
+++ b/src/util.h
@@ -32,7 +32,6 @@
 #include <boost/filesystem/path.hpp>
 #include <boost/thread.hpp>
 
-class CNetAddr;
 class uint256;
 
 static const int64_t COIN = 100000000;
@@ -191,11 +190,8 @@ uint64_t GetRand(uint64_t nMax);
 uint256 GetRandHash();
 int64_t GetTime();
 void SetMockTime(int64_t nMockTimeIn);
-int64_t GetAdjustedTime();
-int64_t GetTimeOffset();
 std::string FormatFullVersion();
 std::string FormatSubVersion(const std::string& name, int nClientVersion, const std::vector<std::string>& comments);
-void AddTimeData(const CNetAddr& ip, int64_t nTime);
 void runCommand(std::string strCommand);
 
 
diff --git a/src/wallet.cpp b/src/wallet.cpp
index e74980e9e7..f6fd6e958d 100644
--- a/src/wallet.cpp
+++ b/src/wallet.cpp
@@ -9,6 +9,7 @@
 #include "checkpoints.h"
 #include "coincontrol.h"
 #include "net.h"
+#include "timedata.h"
 
 #include <boost/algorithm/string/replace.hpp>
 #include <openssl/rand.h>