Comment on how we came up with this code, and comment it

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@7116 e03df62e-2008-0410-955e-edbf42e46eb7

1 files changed, 9 insertions, 2 deletions

diff --git a/win/inspircd_win32wrapper.cpp b/win/inspircd_win32wrapper.cpp
index dde2415aa..1cdd46444 100644
--- a/win/inspircd_win32wrapper.cpp
+++ b/win/inspircd_win32wrapper.cpp
@@ -368,12 +368,15 @@ void CloseIPC()
 }

 

 

+/* These three functions were created from looking at how ares does it

+ * (...and they look far tidier in C++)

+ */

+

+/* Get active nameserver */

 bool GetNameServer(HKEY regkey, const char *key, char* &output)

 {

-	/* Test for the size we need */

 	DWORD size = 0;

 	DWORD result = RegQueryValueEx(regkey, key, 0, NULL, NULL, &size);

-

 	if (((result != ERROR_SUCCESS) && (result != ERROR_MORE_DATA)) || (!size))

 		return false;

 

@@ -387,6 +390,7 @@ bool GetNameServer(HKEY regkey, const char *key, char* &output)
 	return true;

 }

 

+/* Check a network interface for its nameserver */

 bool GetInterface(HKEY regkey, const char *key, char* &output)

 {

 	char buf[39];

@@ -414,8 +418,10 @@ std::string FindNameServerWin()
 	HKEY top, key;

 	char* dns = NULL;

 

+	/* Lets see if the correct registry hive and tree exist */

 	if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, "System\\CurrentControlSet\\Services\\Tcpip\\Parameters", 0, KEY_READ, &top) == ERROR_SUCCESS)

 	{

+		/* If they do, attempt to get the nameserver name */

 		RegOpenKeyEx(top, "Interfaces", 0, KEY_QUERY_VALUE|KEY_ENUMERATE_SUB_KEYS, &key);

 		if ((GetNameServer(top, "NameServer", dns)) || (GetNameServer(top, "DhcpNameServer", dns))

 			|| (GetInterface(key, "NameServer", dns)) || (GetInterface(key, "DhcpNameServer", dns)))

@@ -431,3 +437,4 @@ std::string FindNameServerWin()
 	}

 	return returnval;

 }

+