Second Life viewer sources 1.13.2.12

1 files changed, 228 insertions, 0 deletions

diff --git a/linden/indra/newview/llasynchostbyname.cpp b/linden/indra/newview/llasynchostbyname.cpp
new file mode 100644
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+++ b/linden/indra/newview/llasynchostbyname.cpp
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+/** 
+ * @file llasynchostbyname.cpp
+ * @brief Wrapper for Windows asychronous DNS lookup functionality
+ *
+ * Copyright (c) 2003-2007, Linden Research, Inc.
+ * 
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlife.com/developers/opensource/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at http://secondlife.com/developers/opensource/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ */
+
+// standard LL includes
+#include "llviewerprecompiledheaders.h"
+
+// self include
+#include "llasynchostbyname.h"
+
+//
+// Globals
+//
+LLAsyncHostByName gAsyncHostByName;
+
+
+//
+// Parallel implementations for Windows/UNIX!
+//
+#if LL_WINDOWS
+
+#include "llviewerwindow.h"
+// Place to register the Windows callback
+extern void (*gAsyncMsgCallback)(const MSG &msg);
+
+
+// member functions
+LLAsyncHostByName::LLAsyncHostByName() 
+        : 
+        mRequestHandle(0),
+        mCallback(NULL),
+        mUserdata(NULL)
+{
+        gAsyncMsgCallback = LLAsyncHostByName::handleMessageCallback;
+        memset(mOutputBuffer, 0, sizeof( mOutputBuffer ) );
+}
+
+
+LLAsyncHostByName::~LLAsyncHostByName() 
+{
+}
+
+
+BOOL LLAsyncHostByName::startRequest( const LLString& domain_name, LLAsyncHostByNameCallback callback, void* userdata )
+{
+        if( isPendingRequest() )
+        {
+                llwarns << "LLAsyncHostByName::startRequest() cancelled existing request." << llendl;
+                cancelPendingRequest();
+        }
+
+        mCallback = callback;
+        mUserdata = userdata;
+        memset(mOutputBuffer, 0, sizeof( mOutputBuffer ) );
+        mDomainName = domain_name;
+
+        mRequestHandle = WSAAsyncGetHostByName( 
+                (HWND)gViewerWindow->getPlatformWindow(),
+                LL_WM_HOST_RESOLVED,
+                domain_name.c_str(),
+                mOutputBuffer,
+                sizeof( mOutputBuffer ) );
+
+        if( !mRequestHandle )
+        {
+                llwarns << "LLAsyncHostByName::startRequest() failed: " << WSAGetLastError() << llendl;
+                return FALSE;
+        }
+
+        return TRUE;
+}
+
+
+void LLAsyncHostByName::handleMessage( const MSG& msg )
+{
+        if( (HANDLE)msg.wParam != mRequestHandle ) 
+        {
+                llwarns << "LL_WM_HOST_RESOLVED received for request we weren't waiting for.  Ignored." << llendl;
+                return;
+        }
+        llinfos << "LL_WM_HOST_RESOLVED" << llendl;
+
+        BOOL success = FALSE;
+        U32 ip = 0;
+        S32 error = WSAGETASYNCERROR( msg.lParam );
+        if( error )
+        {
+                if( error == WSANO_DATA) 
+                {
+                        llwarns << "Unknown host" << llendl;
+                } 
+                else 
+                {
+                        llwarns << "Resolve host error" << WSAGetLastError () << llendl;
+                }
+        }
+        else
+        {
+                HOSTENT* he = (HOSTENT*) mOutputBuffer;
+                char** addr_list = he->h_addr_list;
+                if (!addr_list)
+                {
+                        llwarns << "Bad HOSTENT in LLAsyncHostByName" << llendl;
+                        return;
+                }
+                char* first_addr = addr_list[0];
+                if (!first_addr)
+                {
+                        llwarns << "Bad address in HOSTENT in LLAsyncHostByName" << llendl;
+                        return;
+                }
+                ip = *(U32*)first_addr;
+                success = TRUE;
+        }
+
+        if( mCallback )
+        {
+                mCallback( success, mDomainName, ip, mUserdata );
+        }
+        mCallback = NULL;
+        mUserdata = NULL;
+        mRequestHandle = 0;
+        mDomainName.clear();
+}
+
+
+BOOL LLAsyncHostByName::cancelPendingRequest()
+{       
+        if( mCallback )
+        {
+                mCallback( FALSE, mDomainName, 0, mUserdata );
+        }
+        mUserdata = NULL;
+        mCallback = NULL;
+
+        if( mRequestHandle )
+        {
+                S32 ret = WSACancelAsyncRequest( mRequestHandle );
+                if( SOCKET_ERROR == ret )
+                {
+                        llwarns << "LLAsyncHostByName::cancelPendingRequest() failed: " << WSAGetLastError() << llendl;
+                        return FALSE;
+                }
+                memset(mOutputBuffer, 0, sizeof( mOutputBuffer ) );
+                mRequestHandle = 0;
+                return TRUE;
+        }
+
+        return FALSE;
+}
+
+
+// static
+void LLAsyncHostByName::handleMessageCallback(const MSG& msg)
+{
+        gAsyncHostByName.handleMessage(msg);
+}
+
+
+#else // !LL_WINDOWS
+
+
+#include <netdb.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+
+
+// member functions
+LLAsyncHostByName::LLAsyncHostByName() 
+{
+}
+
+
+LLAsyncHostByName::~LLAsyncHostByName() 
+{
+}
+
+
+BOOL LLAsyncHostByName::startRequest( const LLString& domain_name, LLAsyncHostByNameCallback callback, void* userdata )
+{
+        struct hostent *response;
+        U32 ip;
+        BOOL result = FALSE;
+        
+        response = gethostbyname(domain_name.c_str());
+        
+        if(response != NULL)
+        {
+                if(response->h_addrtype == AF_INET)
+                {
+                        ip = ((struct in_addr*)response->h_addr_list[0])->s_addr;
+                        result = TRUE;
+                        (*callback)(result, domain_name, ip, userdata);
+                }
+        }
+        return result;
+}
+
+
+BOOL LLAsyncHostByName::cancelPendingRequest()
+{       
+        // Since this implementation is synchronous, there's nothing to do here.
+        return TRUE;
+}
+#endif // !LL_WINDOWS