From c690c99dd434934a09f38b57d7598c8ecd1231eb Mon Sep 17 00:00:00 2001
From: Patrik Nyblom <pan@erlang.org>
Date: Wed, 1 Dec 2010 12:08:43 +0100
Subject: Make windows inet_gethost work for ipv6

---
 erts/configure.in | 100 ++++++++++++++++++++++++++++++++++++++++++++++--------
 1 file changed, 85 insertions(+), 15 deletions(-)

(limited to 'erts/configure.in')

diff --git a/erts/configure.in b/erts/configure.in
index 8d629c25ae..544ff9790a 100644
--- a/erts/configure.in
+++ b/erts/configure.in
@@ -1679,18 +1679,66 @@ LIBS="$LIBS $EMU_THR_X_LIBS"
 
 dnl Check if we have these, in which case we'll try to build
 dnl inet_gethost with ipv6 support.
-AC_CHECK_FUNC(getaddrinfo, have_getaddrinfo=yes, have_getaddrinfo=no)
+AC_CHECK_HEADERS(windows.h)
+AC_CHECK_HEADERS(winsock2.h)
+AC_CHECK_HEADERS(ws2tcpip.h,[],[],[
+#ifdef HAVE_WINSOCK2_H
+#include <winsock2.h>
+#endif
+#ifdef HAVE_WINDOWS_H
+#include <windows.h>
+#endif
+])
+dnl AC_CHECK_FUNC(getaddrinfo, have_getaddrinfo=yes, have_getaddrinfo=no)
+AC_MSG_CHECKING(for getaddrinfo)
+AC_TRY_LINK([
+#include <stdlib.h>
+#include <string.h>
+#ifdef HAVE_WINSOCK2_H
+#include <winsock2.h>
+#endif
+#ifdef HAVE_WINDOWS_H
+#include <windows.h>
+#endif
+#ifdef HAVE_WS2TCPIP_H
+#include <ws2tcpip.h>
+#endif
+#ifndef __WIN32__
+#include <sys/socket.h>
+#include <netdb.h>
+#endif
+], 
+[
+getaddrinfo("","",NULL,NULL);
+],have_getaddrinfo=yes, have_getaddrinfo=no)
 if test $have_getaddrinfo = yes; then
+        AC_MSG_RESULT([yes])
         AC_MSG_CHECKING([whether getaddrinfo accepts enough flags])
-        AC_TRY_RUN([
+        AC_TRY_COMPILE([
 #include <stdlib.h>
 #include <string.h>
+#ifdef HAVE_WINSOCK2_H
+#include <winsock2.h>
+#endif
+#ifdef HAVE_WINDOWS_H
+#include <windows.h>
+#endif
+#ifdef HAVE_WS2TCPIP_H
+#include <ws2tcpip.h>
+#endif
+#ifndef __WIN32__
 #include <sys/socket.h>
 #include <netdb.h>
-int main(int argc, char **argv) {
+#endif
+],
+[
     struct addrinfo hints, *ai;
     memset(&hints, 0, sizeof(hints));
+#ifndef __WIN32__
     hints.ai_flags = (AI_CANONNAME|AI_V4MAPPED|AI_ADDRCONFIG);
+#else
+    hints.ai_flags = AI_CANONNAME;
+#endif
     hints.ai_socktype = SOCK_STREAM;
     hints.ai_family = AF_INET6;
     if (getaddrinfo("::", NULL, &hints, &ai) == 0) {
@@ -1699,26 +1747,48 @@ int main(int argc, char **argv) {
     } else {
 	exit(1);
     }
-}
-	],, have_getaddrinfo=no,
-	[
-	case X$erl_xcomp_getaddrinfo in
-	    X) have_getaddrinfo=cross;;
-	    Xyes|Xno) have_getaddrinfo=$erl_xcomp_getaddrinfo;;
-	    *) AC_MSG_ERROR([Bad erl_xcomp_getaddrinfo value: $erl_xcomp_getaddrinfo]);;
-	esac
-	])
+],, have_getaddrinfo=no)
 	AC_MSG_RESULT($have_getaddrinfo)
 	case $have_getaddrinfo in
 	    yes)
 		AC_DEFINE(HAVE_GETADDRINFO, [1], 
 		          [Define to 1 if you have a good `getaddrinfo' function.]);;
-	    cross)
-		AC_MSG_WARN([result no guessed because of cross compilation]);;
 	    *) ;;
 	esac
+else
+    AC_MSG_RESULT([no])
 fi
-AC_CHECK_FUNCS([getnameinfo getipnodebyname getipnodebyaddr gethostbyname2])
+AC_MSG_CHECKING(for getnameinfo)
+AC_TRY_LINK([
+#include <stdlib.h>
+#include <string.h>
+#ifdef HAVE_WINSOCK2_H
+#include <winsock2.h>
+#endif
+#ifdef HAVE_WINDOWS_H
+#include <windows.h>
+#endif
+#ifdef HAVE_WS2TCPIP_H
+#include <ws2tcpip.h>
+#endif
+#ifndef __WIN32__
+#include <sys/socket.h>
+#include <netdb.h>
+#endif
+], 
+[
+getnameinfo(NULL,0,NULL,0,NULL,0,0);
+],have_getnameinfo=yes, have_getnameinfo=no)
+if test $have_getnameinfo = yes; then
+        AC_MSG_RESULT([yes])
+	AC_DEFINE(HAVE_GETNAMEINFO, [1], 
+		  [Define to 1 if you have a good `getnameinfo' function.])
+else
+	AC_MSG_RESULT([no])	  
+fi
+
+
+AC_CHECK_FUNCS([getipnodebyname getipnodebyaddr gethostbyname2])
 
 AC_CHECK_FUNCS([ieee_handler fpsetmask finite isnan isinf res_gethostbyname dlopen \
 		pread pwrite writev memmove strerror strerror_r strncasecmp \
-- 
cgit v1.2.3


From 0d79832e450c49e51f5fd7149f5f72930ef1f966 Mon Sep 17 00:00:00 2001
From: Raimo Niskanen <raimo@erlang.org>
Date: Thu, 2 Dec 2010 16:49:19 +0100
Subject: Stop using uncertain flags for getaddrinfo()

The AI_V4MAPPED flag is falling out of grace in modern
IPv6 stacks, for security reasons, e.g. FreeBSD do not
document it any longer. The AI_ADDRCONFIG flag have
got unclear semantics on the same OS.
---
 erts/configure.in | 4 ----
 1 file changed, 4 deletions(-)

(limited to 'erts/configure.in')

diff --git a/erts/configure.in b/erts/configure.in
index 544ff9790a..f99a86a899 100644
--- a/erts/configure.in
+++ b/erts/configure.in
@@ -1734,11 +1734,7 @@ if test $have_getaddrinfo = yes; then
 [
     struct addrinfo hints, *ai;
     memset(&hints, 0, sizeof(hints));
-#ifndef __WIN32__
-    hints.ai_flags = (AI_CANONNAME|AI_V4MAPPED|AI_ADDRCONFIG);
-#else
     hints.ai_flags = AI_CANONNAME;
-#endif
     hints.ai_socktype = SOCK_STREAM;
     hints.ai_family = AF_INET6;
     if (getaddrinfo("::", NULL, &hints, &ai) == 0) {
-- 
cgit v1.2.3