diff options
Diffstat (limited to 'shell/source/backends/wininetbe/wininetbackend.cxx')
| -rw-r--r-- | shell/source/backends/wininetbe/wininetbackend.cxx | 363 |
1 files changed, 363 insertions, 0 deletions
diff --git a/shell/source/backends/wininetbe/wininetbackend.cxx b/shell/source/backends/wininetbe/wininetbackend.cxx new file mode 100644 index 000000000..71de3b135 --- /dev/null +++ b/shell/source/backends/wininetbe/wininetbackend.cxx @@ -0,0 +1,363 @@ +/* -*- 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 = π + 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" ); + + ProxyEntry aFtpProxy = FindProxyEntry( aProxyList, u"ftp" ); + + if( aTypeIndepProxy.Server.getLength() ) + { + aHttpProxy.Server = aTypeIndepProxy.Server; + aHttpsProxy.Server = aTypeIndepProxy.Server; + aFtpProxy.Server = aTypeIndepProxy.Server; + + if( aTypeIndepProxy.Port.getLength() ) + { + aHttpProxy.Port = aTypeIndepProxy.Port; + aHttpsProxy.Port = aTypeIndepProxy.Port; + aFtpProxy.Port = aTypeIndepProxy.Port; + } + else + { + aFtpProxy.Port = aHttpProxy.Port; + 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(); + } + + // ftp proxy name + if( aFtpProxy.Server.getLength() > 0 ) + { + valueFtpProxyName_.IsPresent = true; + valueFtpProxyName_.Value <<= aFtpProxy.Server; + } + + // ftp proxy port + if( aFtpProxy.Port.getLength() > 0 ) + { + valueFtpProxyPort_.IsPresent = true; + valueFtpProxyPort_.Value <<= aFtpProxy.Port.toInt32(); + } + } + } + } +} + +WinInetBackend::~WinInetBackend() +{ +} + +void WinInetBackend::setPropertyValue( + OUString const &, css::uno::Any const &) +{ + throw css::lang::IllegalArgumentException( + "setPropertyValue not supported", + static_cast< cppu::OWeakObject * >(this), -1); +} + +css::uno::Any WinInetBackend::getPropertyValue( + OUString const & PropertyName) +{ + if ( PropertyName == "ooInetFTPProxyName" ) + { + return css::uno::Any(valueFtpProxyName_); + } else if ( PropertyName == "ooInetFTPProxyPort" ) + { + return css::uno::Any(valueFtpProxyPort_); + } else 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, static_cast< cppu::OWeakObject * >(this)); + } +} + +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: */ |