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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sal/config.h>
+
+#include <cstddef>
+#include <string_view>
+
+#include <cppuhelper/supportsservice.hxx>
+#include <com/sun/star/uno/XComponentContext.hpp>
+#include <o3tl/string_view.hxx>
+#include <rtl/ustrbuf.hxx>
+#include <sal/log.hxx>
+
+#include "wininetbackend.hxx"
+
+#if !defined WIN32_LEAN_AND_MEAN
+# define WIN32_LEAN_AND_MEAN
+#endif
+#include <windows.h>
+#include <wininet.h>
+#include <sal/alloca.h>
+
+#define WININET_DLL_NAME L"wininet.dll"
+#define EQUAL_SIGN '='
+#define COLON ':'
+#define SPACE ' '
+#define SEMI_COLON ';'
+
+namespace {
+
+struct Library {
+ HMODULE module;
+
+ explicit Library(HMODULE theModule): module(theModule) {}
+
+ ~Library() { if (module) FreeLibrary(module); }
+};
+
+struct ProxyEntry
+{
+ OUString Server;
+ OUString Port;
+};
+
+ ProxyEntry ReadProxyEntry(std::u16string_view aProxy, std::size_t& i)
+ {
+ ProxyEntry aProxyEntry;
+
+ aProxyEntry.Server = o3tl::getToken( aProxy, COLON, i );
+ if ( i != std::u16string_view::npos )
+ aProxyEntry.Port = o3tl::getToken( aProxy, COLON, i );
+
+ return aProxyEntry;
+ }
+
+ ProxyEntry FindProxyEntry(std::u16string_view aProxyList, std::u16string_view aType)
+ {
+ std::size_t nIndex = 0;
+
+ do
+ {
+ // get the next token, e.g. ftp=server:port
+ std::u16string_view nextToken = o3tl::getToken( aProxyList, SPACE, nIndex );
+
+ // split the next token again into the parts separated
+ // through '=', e.g. ftp=server:port -> ftp and server:port
+ std::size_t i = 0;
+ if( nextToken.find( EQUAL_SIGN ) != std::u16string_view::npos )
+ {
+ if( aType == o3tl::getToken( nextToken, EQUAL_SIGN, i ) )
+ return ReadProxyEntry(nextToken, i);
+ }
+ else if( aType.empty())
+ return ReadProxyEntry(nextToken, i);
+
+ } while ( nIndex != std::u16string_view::npos );
+
+ return ProxyEntry();
+ }
+
+} // unnamed namespace
+
+WinInetBackend::WinInetBackend()
+{
+ Library hWinInetDll( LoadLibraryW( WININET_DLL_NAME ) );
+ if( hWinInetDll.module )
+ {
+ typedef BOOL ( WINAPI *InternetQueryOption_Proc_T )( HINTERNET, DWORD, LPVOID, LPDWORD );
+
+ InternetQueryOption_Proc_T lpfnInternetQueryOption =
+ reinterpret_cast< InternetQueryOption_Proc_T >(
+ GetProcAddress( hWinInetDll.module, "InternetQueryOptionW" ) );
+ if (lpfnInternetQueryOption)
+ {
+ // Some Windows versions would fail the InternetQueryOption call
+ // with ERROR_OUTOFMEMORY when the initial dwLength were zero (and
+ // are apparently fine with the initial sizeof (INTERNET_PROXY_INFO)
+ // and need no reallocation), while other versions fail with
+ // ERROR_INSUFFICIENT_BUFFER upon that initial dwLength and need a
+ // reallocation:
+ INTERNET_PROXY_INFO pi;
+ LPINTERNET_PROXY_INFO lpi = &pi;
+ DWORD dwLength = sizeof (pi);
+ bool ok = lpfnInternetQueryOption(
+ nullptr,
+ INTERNET_OPTION_PROXY,
+ lpi,
+ &dwLength );
+ if (!ok)
+ {
+ DWORD err = GetLastError();
+ if (err == ERROR_INSUFFICIENT_BUFFER)
+ {
+ // allocate sufficient space on the stack
+ // insufficient space on the stack results
+ // in a stack overflow exception, we assume
+ // this never happens, because of the relatively
+ // small amount of memory we need
+ // alloca is nice because it is fast and we don't
+ // have to free the allocated memory, it will be
+ // automatically done
+ lpi = static_cast< LPINTERNET_PROXY_INFO >(
+ alloca( dwLength ) );
+ ok = lpfnInternetQueryOption(
+ nullptr,
+ INTERNET_OPTION_PROXY,
+ lpi,
+ &dwLength );
+ if (!ok)
+ {
+ err = GetLastError();
+ }
+ }
+ if (!ok)
+ {
+ SAL_WARN(
+ "shell",
+ "InternetQueryOption INTERNET_OPTION_PROXY"
+ " GetLastError=" << err);
+ return;
+ }
+ }
+
+ // if a proxy is disabled, InternetQueryOption returns
+ // an empty proxy list, so we don't have to check if
+ // proxy is enabled or not
+
+ // We use InternetQueryOptionW (see https://msdn.microsoft.com/en-us/library/aa385101);
+ // it fills INTERNET_PROXY_INFO struct which is defined in WinInet.h to have LPCTSTR
+ // (i.e., the UNICODE-dependent generic string type expanding to const wchar_t* when
+ // UNICODE is defined, and InternetQueryOption macro expands to InternetQueryOptionW).
+ // Thus, it's natural to expect that W version would return wide strings. But it's not
+ // true. The W version still returns const char* in INTERNET_PROXY_INFO.
+ OUString aProxyList = OUString::createFromAscii( lpi->lpszProxy );
+ OUString aProxyBypassList = OUString::createFromAscii( lpi->lpszProxyBypass );
+
+ // override default for ProxyType, which is "0" meaning "No proxies".
+ valueProxyType_.IsPresent = true;
+ valueProxyType_.Value <<= sal_Int32(1);
+
+ // fill proxy bypass list
+ if( aProxyBypassList.getLength() > 0 )
+ {
+ OUStringBuffer aReverseList;
+ sal_Int32 nIndex = 0;
+ do
+ {
+ OUString aToken = aProxyBypassList.getToken( 0, SPACE, nIndex );
+ if ( aProxyList.indexOf( aToken ) == -1 )
+ {
+ if ( aReverseList.getLength() )
+ {
+ aReverseList.insert( 0, sal_Unicode( SEMI_COLON ) );
+ aReverseList.insert( 0, aToken );
+ }
+ else
+ aReverseList = aToken;
+ }
+ }
+ while ( nIndex >= 0 );
+
+ aProxyBypassList = aReverseList.makeStringAndClear();
+
+ valueNoProxy_.IsPresent = true;
+ valueNoProxy_.Value <<= aProxyBypassList.replace( SPACE, SEMI_COLON );
+ }
+
+ if( aProxyList.getLength() > 0 )
+ {
+
+ // this implementation follows the algorithm
+ // of the internet explorer
+ // if there are type-dependent proxy settings
+ // and type independent proxy settings in the
+ // registry the internet explorer chooses the
+ // type independent proxy for all settings
+ // e.g. imagine the following registry entry
+ // ftp=server:port;http=server:port;server:port
+ // the last token server:port is type independent
+ // so the ie chooses this proxy server
+
+ // if there is no port specified for a type independent
+ // server the ie uses the port of an http server if
+ // there is one and it has a port
+
+
+ ProxyEntry aTypeIndepProxy = FindProxyEntry( aProxyList, u"");
+ ProxyEntry aHttpProxy = FindProxyEntry( aProxyList, u"http" );
+ ProxyEntry aHttpsProxy = FindProxyEntry( aProxyList, u"https" );
+
+ if( aTypeIndepProxy.Server.getLength() )
+ {
+ aHttpProxy.Server = aTypeIndepProxy.Server;
+ aHttpsProxy.Server = aTypeIndepProxy.Server;
+
+ if( aTypeIndepProxy.Port.getLength() )
+ {
+ aHttpProxy.Port = aTypeIndepProxy.Port;
+ aHttpsProxy.Port = aTypeIndepProxy.Port;
+ }
+ else
+ {
+ aHttpsProxy.Port = aHttpProxy.Port;
+ }
+ }
+
+ // http proxy name
+ if( aHttpProxy.Server.getLength() > 0 )
+ {
+ valueHttpProxyName_.IsPresent = true;
+ valueHttpProxyName_.Value <<= aHttpProxy.Server;
+ }
+
+ // http proxy port
+ if( aHttpProxy.Port.getLength() > 0 )
+ {
+ valueHttpProxyPort_.IsPresent = true;
+ valueHttpProxyPort_.Value <<= aHttpProxy.Port.toInt32();
+ }
+
+ // https proxy name
+ if( aHttpsProxy.Server.getLength() > 0 )
+ {
+ valueHttpsProxyName_.IsPresent = true;
+ valueHttpsProxyName_.Value <<= aHttpsProxy.Server;
+ }
+
+ // https proxy port
+ if( aHttpsProxy.Port.getLength() > 0 )
+ {
+ valueHttpsProxyPort_.IsPresent = true;
+ valueHttpsProxyPort_.Value <<= aHttpsProxy.Port.toInt32();
+ }
+ }
+ }
+ }
+}
+
+WinInetBackend::~WinInetBackend()
+{
+}
+
+void WinInetBackend::setPropertyValue(
+ OUString const &, css::uno::Any const &)
+{
+ throw css::lang::IllegalArgumentException(
+ "setPropertyValue not supported",
+ getXWeak(), -1);
+}
+
+css::uno::Any WinInetBackend::getPropertyValue(
+ OUString const & PropertyName)
+{
+ if (PropertyName == "ooInetHTTPProxyName")
+ {
+ return css::uno::Any(valueHttpProxyName_);
+ } else if ( PropertyName == "ooInetHTTPProxyPort" )
+ {
+ return css::uno::Any(valueHttpProxyPort_);
+ } else if ( PropertyName == "ooInetHTTPSProxyName" )
+ {
+ return css::uno::Any(valueHttpsProxyName_);
+ } else if ( PropertyName == "ooInetHTTPSProxyPort" )
+ {
+ return css::uno::Any(valueHttpsProxyPort_);
+ } else if ( PropertyName == "ooInetNoProxy" )
+ {
+ return css::uno::Any(valueNoProxy_);
+ } else if ( PropertyName == "ooInetProxyType" )
+ {
+ return css::uno::Any(valueProxyType_);
+ } else {
+ throw css::beans::UnknownPropertyException(
+ PropertyName, getXWeak());
+ }
+}
+
+OUString SAL_CALL WinInetBackend::getImplementationName()
+{
+ return "com.sun.star.comp.configuration.backend.WinInetBackend" ;
+}
+
+sal_Bool SAL_CALL WinInetBackend::supportsService(const OUString& aServiceName)
+{
+ return cppu::supportsService(this, aServiceName);
+}
+
+uno::Sequence<OUString> SAL_CALL WinInetBackend::getSupportedServiceNames()
+{
+ return { "com.sun.star.configuration.backend.WinInetBackend" };
+}
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+shell_WinInetBackend_get_implementation(
+ css::uno::XComponentContext* , css::uno::Sequence<css::uno::Any> const&)
+{
+ return cppu::acquire(new WinInetBackend);
+}
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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