add LOCK() for proxy related data-structures

- fix #1560 by properly locking proxy related data-structures
- update GetProxy() and introduce GetNameProxy() to be able to use a
  thread-safe local copy from proxyInfo and nameproxyInfo
- update usage of GetProxy() all over the source to match the new
  behaviour, as it now fills a full proxyType object
- rename GetNameProxy() into HaveNameProxy() to be more clear

1 files changed, 39 insertions, 30 deletions

diff --git a/src/qt/optionsmodel.cpp b/src/qt/optionsmodel.cpp
index caa33414b2..756fe61ecd 100644
--- a/src/qt/optionsmodel.cpp
+++ b/src/qt/optionsmodel.cpp
@@ -145,18 +145,18 @@ QVariant OptionsModel::data(const QModelIndex & index, int role) const
         case ProxyUse:
             return settings.value("fUseProxy", false);
         case ProxyIP: {
-            CService addrProxy;
-            if (GetProxy(NET_IPV4, addrProxy))
-                return QVariant(QString::fromStdString(addrProxy.ToStringIP()));
+            proxyType proxy;
+            if (GetProxy(NET_IPV4, proxy))
+                return QVariant(QString::fromStdString(proxy.first.ToStringIP()));
             else
                 return QVariant(QString::fromStdString("127.0.0.1"));
         }
         case ProxyPort: {
-            CService addrProxy;
-            if (GetProxy(NET_IPV4, addrProxy))
-                return QVariant(addrProxy.GetPort());
+            proxyType proxy;
+            if (GetProxy(NET_IPV4, proxy))
+                return QVariant(proxy.first.GetPort());
             else
-                return 9050;
+                return QVariant(9050);
         }
         case ProxySocksVersion:
             return settings.value("nSocksVersion", 5);
@@ -176,6 +176,7 @@ QVariant OptionsModel::data(const QModelIndex & index, int role) const
     }
     return QVariant();
 }
+
 bool OptionsModel::setData(const QModelIndex & index, const QVariant & value, int role)
 {
     bool successful = true; /* set to false on parse error */
@@ -204,29 +205,37 @@ bool OptionsModel::setData(const QModelIndex & index, const QVariant & value, in
             settings.setValue("fUseProxy", value.toBool());
             ApplyProxySettings();
             break;
-        case ProxyIP:
-            {
-                CService addrProxy("127.0.0.1", 9050);
-                GetProxy(NET_IPV4, addrProxy);
-                CNetAddr addr(value.toString().toStdString());
-                addrProxy.SetIP(addr);
-                settings.setValue("addrProxy", addrProxy.ToStringIPPort().c_str());
-                successful = ApplyProxySettings();
-            }
-            break;
-        case ProxyPort:
-            {
-                CService addrProxy("127.0.0.1", 9050);
-                GetProxy(NET_IPV4, addrProxy);
-                addrProxy.SetPort(value.toInt());
-                settings.setValue("addrProxy", addrProxy.ToStringIPPort().c_str());
-                successful = ApplyProxySettings();
-            }
-            break;
-        case ProxySocksVersion:
-            settings.setValue("nSocksVersion", value.toInt());
-            ApplyProxySettings();
-            break;
+        case ProxyIP: {
+            proxyType proxy;
+            proxy.first = CService("127.0.0.1", 9050);
+            GetProxy(NET_IPV4, proxy);
+
+            CNetAddr addr(value.toString().toStdString());
+            proxy.first.SetIP(addr);
+            settings.setValue("addrProxy", proxy.first.ToStringIPPort().c_str());
+            successful = ApplyProxySettings();
+        }
+        break;
+        case ProxyPort: {
+            proxyType proxy;
+            proxy.first = CService("127.0.0.1", 9050);
+            GetProxy(NET_IPV4, proxy);
+
+            proxy.first.SetPort(value.toInt());
+            settings.setValue("addrProxy", proxy.first.ToStringIPPort().c_str());
+            successful = ApplyProxySettings();
+        }
+        break;
+        case ProxySocksVersion: {
+            proxyType proxy;
+            proxy.second = 5;
+            GetProxy(NET_IPV4, proxy);
+
+            proxy.second = value.toInt();
+            settings.setValue("nSocksVersion", proxy.second);
+            successful = ApplyProxySettings();
+        }
+        break;
         case Fee:
             nTransactionFee = value.toLongLong();
             settings.setValue("nTransactionFee", nTransactionFee);