Added Windows implementation of SDLNet_GetLocalAddresses()

Author: slouken

SDLnet.c

@@ -188,16 +188,50 @@ int SDLNet_GetLocalAddresses(IPaddress *addresses, int maxcount)
 	}
 
 	ifr = (struct ifreq*)data;
-	while ((char*)ifr < data+conf.ifc_len && count < maxcount) {
+	while ((char*)ifr < data+conf.ifc_len) {
 		if (ifr->ifr_addr.sa_family == AF_INET) {
-			sock_addr = (struct sockaddr_in*)&ifr->ifr_addr;
-			addresses[count].host = sock_addr->sin_addr.s_addr;
-			addresses[count].port = sock_addr->sin_port;
+			if (count < maxcount) {
+				sock_addr = (struct sockaddr_in*)&ifr->ifr_addr;
+				addresses[count].host = sock_addr->sin_addr.s_addr;
+				addresses[count].port = sock_addr->sin_port;
+			}
 			++count;
 		}
 		ifr = (struct ifreq*)((char*)ifr + _SIZEOF_ADDR_IFREQ(*ifr));
 	}
 	closesocket(sock);
+#elif defined(__WIN32__)
+    PIP_ADAPTER_INFO pAdapterInfo;
+    PIP_ADAPTER_INFO pAdapter;
+	PIP_ADDR_STRING pAddress;
+    DWORD dwRetVal = 0;
+    ULONG ulOutBufLen = sizeof (IP_ADAPTER_INFO);
+
+    pAdapterInfo = (IP_ADAPTER_INFO *) SDL_malloc(sizeof (IP_ADAPTER_INFO));
+    if (pAdapterInfo == NULL) {
+		return 0;
+    }
+
+    if ((dwRetVal = GetAdaptersInfo(pAdapterInfo, &ulOutBufLen)) == ERROR_BUFFER_OVERFLOW) {
+        pAdapterInfo = (IP_ADAPTER_INFO *) SDL_realloc(pAdapterInfo, ulOutBufLen);
+        if (pAdapterInfo == NULL) {
+			return 0;
+        }
+		dwRetVal = GetAdaptersInfo(pAdapterInfo, &ulOutBufLen);
+    }
+
+    if (dwRetVal == NO_ERROR) {
+        for (pAdapter = pAdapterInfo; pAdapter; pAdapter = pAdapter->Next) {
+			for (pAddress = &pAdapterInfo->IpAddressList; pAddress; pAddress = pAddress->Next) {
+				if (count < maxcount) {
+					addresses[count].host = inet_addr(pAddress->IpAddress.String);
+					addresses[count].port = 0;
+				}
+				++count;
+			}
+        }
+    }
+	SDL_free(pAdapterInfo);
 #endif
 	return count;
 }

SDLnetsys.h

@@ -42,6 +42,7 @@
  * and is defined only for winsock2. */
 typedef int socklen_t;
 #endif /* W64 */
+#include <iphlpapi.h>
 #else /* UNIX */
 #include <sys/types.h>
 #ifdef __FreeBSD__

VisualC/SDL_net_VS2008.sln

@@ -3,6 +3,11 @@ Microsoft Visual Studio Solution File, Format Version 10.00
 # Visual Studio 2008
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "SDL_net", "SDL_net_VS2008.vcproj", "{8AB3504F-5E58-4910-AFE8-7A1E595AC3F4}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "showinterfaces", "showinterfaces\showinterfaces.vcproj", "{7B1F60CD-2A09-4514-937C-D9DD044428FB}"
+	ProjectSection(ProjectDependencies) = postProject
+		{8AB3504F-5E58-4910-AFE8-7A1E595AC3F4} = {8AB3504F-5E58-4910-AFE8-7A1E595AC3F4}
+	EndProjectSection
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Win32 = Debug|Win32
@@ -19,6 +24,14 @@ Global
 		{8AB3504F-5E58-4910-AFE8-7A1E595AC3F4}.Release|Win32.Build.0 = Release|Win32
 		{8AB3504F-5E58-4910-AFE8-7A1E595AC3F4}.Release|x64.ActiveCfg = Release|x64
 		{8AB3504F-5E58-4910-AFE8-7A1E595AC3F4}.Release|x64.Build.0 = Release|x64
+		{7B1F60CD-2A09-4514-937C-D9DD044428FB}.Debug|Win32.ActiveCfg = Debug|Win32
+		{7B1F60CD-2A09-4514-937C-D9DD044428FB}.Debug|Win32.Build.0 = Debug|Win32
+		{7B1F60CD-2A09-4514-937C-D9DD044428FB}.Debug|x64.ActiveCfg = Debug|x64
+		{7B1F60CD-2A09-4514-937C-D9DD044428FB}.Debug|x64.Build.0 = Debug|x64
+		{7B1F60CD-2A09-4514-937C-D9DD044428FB}.Release|Win32.ActiveCfg = Release|Win32
+		{7B1F60CD-2A09-4514-937C-D9DD044428FB}.Release|Win32.Build.0 = Release|Win32
+		{7B1F60CD-2A09-4514-937C-D9DD044428FB}.Release|x64.ActiveCfg = Release|x64
+		{7B1F60CD-2A09-4514-937C-D9DD044428FB}.Release|x64.Build.0 = Release|x64
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

VisualC/SDL_net_VS2008.vcproj

@@ -72,7 +72,7 @@
 			/>
 			<Tool
 				Name="VCLinkerTool"
-				AdditionalDependencies="wsock32.lib SDL.lib"
+				AdditionalDependencies="wsock32.lib iphlpapi.lib SDL.lib"
 				OutputFile=".\Debug/SDL_net.dll"
 				LinkIncremental="2"
 				SuppressStartupBanner="true"
@@ -162,7 +162,7 @@
 			/>
 			<Tool
 				Name="VCLinkerTool"
-				AdditionalDependencies="ws2_32.lib SDL.lib"
+				AdditionalDependencies="ws2_32.lib iphlpapi.lib SDL.lib"
 				OutputFile=".\Debug/SDL_net.dll"
 				LinkIncremental="2"
 				SuppressStartupBanner="true"
@@ -250,7 +250,7 @@
 			/>
 			<Tool
 				Name="VCLinkerTool"
-				AdditionalDependencies="wsock32.lib SDL.lib"
+				AdditionalDependencies="wsock32.lib iphlpapi.lib SDL.lib"
 				OutputFile=".\Release/SDL_net.dll"
 				LinkIncremental="1"
 				SuppressStartupBanner="true"
@@ -337,7 +337,7 @@
 			/>
 			<Tool
 				Name="VCLinkerTool"
-				AdditionalDependencies="ws2_32.lib SDL.lib"
+				AdditionalDependencies="ws2_32.lib iphlpapi.lib SDL.lib"
 				OutputFile=".\Release/SDL_net.dll"
 				LinkIncremental="1"
 				SuppressStartupBanner="true"