Add GL_ExtensionSupported in vid_null.c because vid_shared.c relies on

[xonotic/darkplaces.git] / lhnet.c

diff --git a/lhnet.c b/lhnet.c
index e3bc6b712186f54dd511fd4165ddfc2f54fa3c88..3ac17a0aad880a6b4d912345ca7626d3e1ee268f 100644 (file)
--- a/lhnet.c
+++ b/lhnet.c
@@ -5,7 +5,7 @@
 #ifdef _MSC_VER
 #pragma comment(lib, "ws2_32.lib")
 #endif
-# ifdef SUPPORTIPV6
+# ifndef NOSUPPORTIPV6
 // Windows XP or higher is required for getaddrinfo, but the inclusion of wspiapi provides fallbacks for older versions
 # define _WIN32_WINNT 0x0501
 # endif
@@ -33,7 +33,7 @@
 #include <netdb.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
-#ifdef SUPPORTIPV6
+#ifndef NOSUPPORTIPV6
 #include <net/if.h>
 #endif
 #endif
@@ -57,6 +57,9 @@
 #include "lhnet.h"
 
 #if defined(WIN32)
+// as of Visual Studio 2015, EWOULDBLOCK and ECONNREFUSED are real things, with different values than we want when talking to WinSock, so we have to undef them here or change the rest of the code.
+#undef EWOULDBLOCK
+#undef ECONNREFUSED
 #define EWOULDBLOCK WSAEWOULDBLOCK
 #define ECONNREFUSED WSAECONNREFUSED
 
@@ -97,7 +100,7 @@ typedef struct lhnetaddressnative_s
        {
                struct sockaddr sock;
                struct sockaddr_in in;
-#ifdef SUPPORTIPV6
+#ifndef NOSUPPORTIPV6
                struct sockaddr_in6 in6;
 #endif
        }
@@ -139,7 +142,7 @@ int LHNETADDRESS_FromPort(lhnetaddress_t *vaddress, lhnetaddresstype_t addressty
                address->addr.in.sin_family = AF_INET;
                address->addr.in.sin_port = htons((unsigned short)port);
                return 1;
-#ifdef SUPPORTIPV6
+#ifndef NOSUPPORTIPV6
        case LHNETADDRESSTYPE_INET6:
                // [0:0:0:0:0:0:0:0]:port  (IN6ADDR_ANY, binds to all interfaces)
                memset(address, 0, sizeof(*address));
@@ -153,7 +156,7 @@ int LHNETADDRESS_FromPort(lhnetaddress_t *vaddress, lhnetaddresstype_t addressty
        return 0;
 }
 
-#ifdef SUPPORTIPV6
+#ifndef NOSUPPORTIPV6
 static int LHNETADDRESS_Resolve(lhnetaddressnative_t *address, const char *name, int port)
 {
        char port_buff [16];
@@ -453,7 +456,7 @@ int LHNETADDRESS_FromString(lhnetaddress_t *vaddress, const char *string, int de
                address->port = port;
                if (address->addresstype == LHNETADDRESSTYPE_INET6)
                {
-#ifdef SUPPORTIPV6
+#ifndef NOSUPPORTIPV6
                        address->addr.in6.sin6_port = htons((unsigned short)port);
                        return 1;
 #endif
@@ -471,7 +474,7 @@ int LHNETADDRESS_FromString(lhnetaddress_t *vaddress, const char *string, int de
        {
                if (hostentry->h_addrtype == AF_INET6)
                {
-#ifdef SUPPORTIPV6
+#ifndef NOSUPPORTIPV6
                        // great it worked
                        address->addresstype = LHNETADDRESSTYPE_INET6;
                        address->port = port;
@@ -535,9 +538,9 @@ int LHNETADDRESS_ToString(const lhnetaddress_t *vaddress, char *string, int stri
 {
        lhnetaddressnative_t *address = (lhnetaddressnative_t *)vaddress;
        const unsigned char *a;
-       *string = 0;
        if (!address || !string || stringbuffersize < 1)
                return 0;
+       *string = 0;
        switch(address->addresstype)
        {
        default:
@@ -579,7 +582,7 @@ int LHNETADDRESS_ToString(const lhnetaddress_t *vaddress, char *string, int stri
                        }
                }
                break;
-#ifdef SUPPORTIPV6
+#ifndef NOSUPPORTIPV6
        case LHNETADDRESSTYPE_INET6:
                a = (const unsigned char *)(&address->addr.in6.sin6_addr);
                if (includeport)
@@ -614,7 +617,7 @@ int LHNETADDRESS_GetAddressType(const lhnetaddress_t *address)
 
 const char *LHNETADDRESS_GetInterfaceName(const lhnetaddress_t *vaddress, char *ifname, size_t ifnamelength)
 {
-#ifdef SUPPORTIPV6
+#ifndef NOSUPPORTIPV6
        lhnetaddressnative_t *address = (lhnetaddressnative_t *)vaddress;
 
        if (address && address->addresstype == LHNETADDRESSTYPE_INET6)
@@ -659,7 +662,7 @@ int LHNETADDRESS_SetPort(lhnetaddress_t *vaddress, int port)
        case LHNETADDRESSTYPE_INET4:
                address->addr.in.sin_port = htons((unsigned short)port);
                return 1;
-#ifdef SUPPORTIPV6
+#ifndef NOSUPPORTIPV6
        case LHNETADDRESSTYPE_INET6:
                address->addr.in6.sin6_port = htons((unsigned short)port);
                return 1;
@@ -691,7 +694,7 @@ int LHNETADDRESS_Compare(const lhnetaddress_t *vaddress1, const lhnetaddress_t *
                if (address1->port != address2->port)
                        return -1;
                return 0;
-#ifdef SUPPORTIPV6
+#ifndef NOSUPPORTIPV6
        case LHNETADDRESSTYPE_INET6:
                if (address1->addr.in6.sin6_family != address2->addr.in6.sin6_family)
                        return 1;
@@ -912,14 +915,14 @@ lhnetsocket_t *LHNET_OpenSocket_Connectionless(lhnetaddress_t *address)
                        }
                        break;
                case LHNETADDRESSTYPE_INET4:
-#ifdef SUPPORTIPV6
+#ifndef NOSUPPORTIPV6
                case LHNETADDRESSTYPE_INET6:
 #endif
 #ifdef WIN32
                        if (lhnet_didWSAStartup)
                        {
 #endif
-#ifdef SUPPORTIPV6
+#ifndef NOSUPPORTIPV6
                                if ((lhnetsocket->inetsocket = socket(address->addresstype == LHNETADDRESSTYPE_INET6 ? PF_INET6 : PF_INET, SOCK_DGRAM, IPPROTO_UDP)) != -1)
 #else
                                if ((lhnetsocket->inetsocket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) != -1)
@@ -972,13 +975,19 @@ lhnetsocket_t *LHNET_OpenSocket_Connectionless(lhnetaddress_t *address)
                                                        }
 #endif
 
-#ifdef SUPPORTIPV6
+#ifndef NOSUPPORTIPV6
                                                        if (address->addresstype == LHNETADDRESSTYPE_INET6)
                                                        {
                                                                namelen = sizeof(localaddress->addr.in6);
                                                                bindresult = bind(lhnetsocket->inetsocket, &localaddress->addr.sock, namelen);
                                                                if (bindresult != -1)
-                                                                       getsockname(lhnetsocket->inetsocket, &localaddress->addr.sock, &namelen);
+                                                               {
+                                                                       if (getsockname(lhnetsocket->inetsocket, &localaddress->addr.sock, &namelen))
+                                                                       {
+                                                                               // If getsockname failed, we can assume the bound socket is useless.
+                                                                               bindresult = -1;
+                                                                       }
+                                                               }
                                                        }
                                                        else
 #endif
@@ -986,7 +995,13 @@ lhnetsocket_t *LHNET_OpenSocket_Connectionless(lhnetaddress_t *address)
                                                                namelen = sizeof(localaddress->addr.in);
                                                                bindresult = bind(lhnetsocket->inetsocket, &localaddress->addr.sock, namelen);
                                                                if (bindresult != -1)
-                                                                       getsockname(lhnetsocket->inetsocket, &localaddress->addr.sock, &namelen);
+                                                               {
+                                                                       if (getsockname(lhnetsocket->inetsocket, &localaddress->addr.sock, &namelen))
+                                                                       {
+                                                                               // If getsockname failed, we can assume the bound socket is useless.
+                                                                               bindresult = -1;
+                                                                       }
+                                                               }
                                                        }
                                                        if (bindresult != -1)
                                                        {
@@ -997,7 +1012,10 @@ lhnetsocket_t *LHNET_OpenSocket_Connectionless(lhnetaddress_t *address)
                                                                {
                                                                        // enable DSCP for ToS support
                                                                        int tos = lhnet_default_dscp << 2;
-                                                                       setsockopt(lhnetsocket->inetsocket, IPPROTO_IP, IP_TOS, (char *) &tos, sizeof(tos));
+                                                                       if (setsockopt(lhnetsocket->inetsocket, IPPROTO_IP, IP_TOS, (char *) &tos, sizeof(tos)))
+                                                                       {
+                                                                               // Error in setsockopt - fine, we'll simply set no TOS then.
+                                                                       }
                                                                }
 #endif
                                                                lhnetsocket->next = &lhnet_socketlist;
@@ -1140,7 +1158,7 @@ int LHNET_Read(lhnetsocket_t *lhnetsocket, void *content, int maxcontentlength,
                        Con_DPrintf("LHNET_Read: recvfrom returned error: %s\n", LHNETPRIVATE_StrError());
                }
        }
-#ifdef SUPPORTIPV6
+#ifndef NOSUPPORTIPV6
        else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET6)
        {
                SOCKLEN_T inetaddresslength;
@@ -1208,7 +1226,7 @@ int LHNET_Write(lhnetsocket_t *lhnetsocket, const void *content, int contentleng
                        Con_DPrintf("LHNET_Write: sendto returned error: %s\n", LHNETPRIVATE_StrError());
                }
        }
-#ifdef SUPPORTIPV6
+#ifndef NOSUPPORTIPV6
        else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET6)
        {
                value = sendto(lhnetsocket->inetsocket, (char *)content, contentlength, 0, (struct sockaddr *)&address->addr.in6, sizeof(struct sockaddr_in6));