applying patch, fixes #10523

[wxWidgets.git] / src / common / sckaddr.cpp

diff --git a/src/common/sckaddr.cpp b/src/common/sckaddr.cpp
index 6f7601842ebdee0e5c72196e17ae9bd822ef7a05..b706132e5c7201b5a9808422b5539e5bb60f9114 100644 (file)
--- a/src/common/sckaddr.cpp
+++ b/src/common/sckaddr.cpp
@@ -46,6 +46,8 @@
 #include "wx/private/socket.h"
 #include "wx/private/sckaddr.h"
 
+#include <errno.h>
+
 #ifdef __UNIX__
     #include <netdb.h>
     #include <arpa/inet.h>
@@ -74,7 +76,7 @@ IMPLEMENT_DYNAMIC_CLASS(wxUNIXaddress, wxSockAddress)
 // ============================================================================
 
 // TODO: use POSIX getaddrinfo() (also available in Winsock 2) for simplicity
-//       and IPv6 support
+//       and to use the same code for IPv4 and IPv6 support
 
 #ifdef __WXMSW__
     #define HAVE_INET_ADDR
@@ -85,6 +87,23 @@ IMPLEMENT_DYNAMIC_CLASS(wxUNIXaddress, wxSockAddress)
     // under MSW getxxxbyname() functions are MT-safe (but not reentrant) so
     // we don't need to serialize calls to them
     #define wxHAS_MT_SAFE_GETBY_FUNCS
+
+    #if wxUSE_IPV6
+        // this header does dynamic dispatching of getaddrinfo/freeaddrinfo()
+        // by implementing them in its own code if the system versions are not
+        // available (as is the case for anything < XP)
+        //
+        // NB: if this is not available for the other compilers (so far tested
+        //      with MSVC only) we should just use wxDynamicLibrary "manually"
+        #ifdef __VISUALC__
+            // disable a warning occurring in Microsoft own version of this file
+            #pragma warning(disable:4706)
+        #endif
+        #include <wspiapi.h>
+        #ifdef __VISUALC__
+            #pragma warning(default:4706)
+        #endif
+    #endif
 #endif // __WXMSW__
 
 // we assume that we have gethostbyaddr_r() if and only if we have
@@ -102,20 +121,34 @@ IMPLEMENT_DYNAMIC_CLASS(wxUNIXaddress, wxSockAddress)
 #endif
 
 // the _r functions need the extra buffer parameter but unfortunately its type
-// differs between different systems
+// differs between different systems and for the systems which use opaque
+// structs for it (at least AIX and OpenBSD) it must be zero-filled before
+// being passed to the system functions
 #ifdef HAVE_FUNC_GETHOSTBYNAME_R_3
-    typedef hostent_data wxGethostBuf;
+    struct wxGethostBuf : hostent_data
+    {
+        wxGethostBuf()
+        {
+            memset(this, 0, sizeof(hostent_data));
+        }
+    };
 #else
     typedef char wxGethostBuf[1024];
 #endif
 
-#ifdef HAVE_FUNC_GETSERVBYNAME_R_3
-    typedef servent_data wxGetservBuf;
+#ifdef HAVE_FUNC_GETSERVBYNAME_R_4
+    struct wxGetservBuf : servent_data
+    {
+        wxGethostBuf()
+        {
+            memset(this, 0, sizeof(servent_data));
+        }
+    };
 #else
     typedef char wxGetservBuf[1024];
 #endif
 
-#ifdef wxHAS_MT_SAFE_GETBY_FUNCS
+#if defined(wxHAS_MT_SAFE_GETBY_FUNCS) || !wxUSE_THREADS
     #define wxLOCK_GETBY_MUTEX(name)
 #else // may need mutexes to protect getxxxbyxxx() calls
     #if defined(HAVE_GETHOSTBYNAME) || \
@@ -350,7 +383,7 @@ servent *deepCopyServent(servent *s,
 servent *wxGetservbyname_r(const char *port,
                            const char *protocol,
                            servent *serv,
-                           wxGetservBuf buffer,
+                           wxGetservBuf& buffer,
                            int size)
 {
     servent *se;
@@ -359,7 +392,8 @@ servent *wxGetservbyname_r(const char *port,
 #elif defined(HAVE_FUNC_GETSERVBYNAME_R_5)
     se = getservbyname_r(port, protocol, serv, buffer, size);
 #elif defined(HAVE_FUNC_GETSERVBYNAME_R_4)
-    se = getservbyname_r(port, protocol, serv, &buffer);
+    if ( getservbyname_r(port, protocol, serv, &buffer) != 0 )
+        return NULL;
 #elif defined(HAVE_GETSERVBYNAME)
     wxLOCK_GETBY_MUTEX(serv);
 
@@ -688,6 +722,16 @@ wxString wxSockAddressImpl::GetPath() const
 // wxSockAddress
 // ----------------------------------------------------------------------------
 
+const sockaddr *wxSockAddress::GetAddressData() const
+{
+    return GetAddress().GetAddr();
+}
+
+int wxSockAddress::GetAddressDataLen() const
+{
+    return GetAddress().GetLen();
+}
+
 void wxSockAddress::Init()
 {
     if ( !wxSocketBase::IsInitialized() )