From d0495780d13d2a0981be7c31c58a9192f9f67251 Mon Sep 17 00:00:00 2001
From: Guido Serassio <serassio@squid-cache.org>
Date: Tue, 8 Jul 2008 12:07:15 +0200
Subject: [PATCH] Windows port: add option for control of IP address changes
 notification in squid.conf

On Windows Squid by default will monitor IP address changes and will
reconfigure itself after any detected event. This is very useful for
proxies connected to internet with dial-up interfaces.
In some cases (a Proxy server acting as VPN gateway is one) it could be
desiderable to disable this behaviour.
---
 src/WinSvc.cc   |  6 ++++--
 src/cf.data.pre | 14 ++++++++++++++
 src/structs.h   |  1 +
 3 files changed, 19 insertions(+), 2 deletions(-)
 mode change 100644 => 100755 src/structs.h

diff --git a/src/WinSvc.cc b/src/WinSvc.cc
index 8f7a2ba942..daae1f758d 100755
--- a/src/WinSvc.cc
+++ b/src/WinSvc.cc
@@ -390,16 +390,18 @@ WIN32_Abort(int sig)
     WIN32_Exit();
 }
 
+#ifdef _SQUID_MSWIN_
 void
 WIN32_IpAddrChangeMonitorExit()
 {
     DWORD status = ERROR_SUCCESS;
 
-    if (NotifyAddrChange_thread == INVALID_HANDLE_VALUE) {
+    if (NotifyAddrChange_thread != INVALID_HANDLE_VALUE) {
 	TerminateThread(NotifyAddrChange_thread, status);
 	CloseHandle(NotifyAddrChange_thread);
     }
 }
+#endif
 
 void
 WIN32_Exit()
@@ -459,7 +461,7 @@ WIN32_IpAddrChangeMonitorInit()
     DWORD status = ERROR_SUCCESS;
     DWORD threadID = 0, ThrdParam = 0;
 
-    if (WIN32_run_mode == _WIN_SQUID_RUN_MODE_SERVICE) {
+    if ((WIN32_run_mode == _WIN_SQUID_RUN_MODE_SERVICE) && (Config.onoff.WIN32_IpAddrChangeMonitor)) {
 	NotifyAddrChange_thread = CreateThread(NULL, 0, WIN32_IpAddrChangeMonitor,
 	    &ThrdParam, 0, &threadID);
 	if (NotifyAddrChange_thread == NULL) {
diff --git a/src/cf.data.pre b/src/cf.data.pre
index f81bb65130..5aec56248e 100644
--- a/src/cf.data.pre
+++ b/src/cf.data.pre
@@ -5478,4 +5478,18 @@ DOC_START
 	rounded to 1000.
 DOC_END
 
+NAME: windows_ipaddrchangemonitor
+COMMENT: on|off
+TYPE: onoff
+DEFAULT: on
+LOC: Config.onoff.WIN32_IpAddrChangeMonitor
+DOC_START
+	On Windows Squid by default will monitor IP address changes and will 
+	reconfigure itself after any detected event. This is very useful for
+	proxies connected to internet with dial-up interfaces.
+	In some cases (a Proxy server acting as VPN gateway is one) it could be
+	desiderable to disable this behaviour setting this to 'off'.
+	Note: after changing this, Squid service must be restarted.
+DOC_END
+
 EOF
diff --git a/src/structs.h b/src/structs.h
old mode 100644
new mode 100755
index 3cdaa4a507..f7901a85b6
--- a/src/structs.h
+++ b/src/structs.h
@@ -554,6 +554,7 @@ struct _SquidConfig
         int httpd_suppress_version_string;
         int global_internal_static;
         int debug_override_X;
+        int WIN32_IpAddrChangeMonitor;
     }
 
     onoff;
-- 
2.47.2