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Diffstat (limited to 'shell/source/unix/exec/shellexec.cxx')
| -rw-r--r-- | shell/source/unix/exec/shellexec.cxx | 291 |
1 files changed, 291 insertions, 0 deletions
diff --git a/shell/source/unix/exec/shellexec.cxx b/shell/source/unix/exec/shellexec.cxx new file mode 100644 index 000000000..195a69788 --- /dev/null +++ b/shell/source/unix/exec/shellexec.cxx @@ -0,0 +1,291 @@ +/* -*- 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 <osl/thread.h> +#include <osl/file.hxx> +#include <rtl/strbuf.hxx> +#include <sal/log.hxx> + +#include "shellexec.hxx" +#include <com/sun/star/system/SystemShellExecuteException.hpp> +#include <com/sun/star/system/SystemShellExecuteFlags.hpp> + +#include <com/sun/star/lang/IllegalArgumentException.hpp> +#include <com/sun/star/security/AccessControlException.hpp> +#include <com/sun/star/uri/ExternalUriReferenceTranslator.hpp> +#include <com/sun/star/uri/UriReferenceFactory.hpp> +#include <cppuhelper/supportsservice.hxx> +#include <comphelper/lok.hxx> + +#include <string.h> +#include <errno.h> + +#if defined MACOSX +#include <sys/stat.h> +#endif + +#ifdef EMSCRIPTEN +#include <rtl/uri.hxx> +extern void execute_browser(const char* sUrl); +#endif + +using com::sun::star::system::XSystemShellExecute; +using com::sun::star::system::SystemShellExecuteException; + +using namespace ::com::sun::star::uno; +using namespace ::com::sun::star::lang; +using namespace ::com::sun::star::system::SystemShellExecuteFlags; +using namespace cppu; + +#ifndef EMSCRIPTEN +namespace +{ + void escapeForShell( OStringBuffer & rBuffer, const OString & rURL) + { + sal_Int32 nmax = rURL.getLength(); + for(sal_Int32 n=0; n < nmax; ++n) + { + // escape every non alpha numeric characters (excluding a few "known good") by prepending a '\' + char c = rURL[n]; + if( ( c < 'A' || c > 'Z' ) && ( c < 'a' || c > 'z' ) && ( c < '0' || c > '9' ) && c != '/' && c != '.' ) + rBuffer.append( '\\' ); + + rBuffer.append( c ); + } + } +} +#endif + +ShellExec::ShellExec( const Reference< XComponentContext >& xContext ) : + m_xContext(xContext) +{ +} + +void SAL_CALL ShellExec::execute( const OUString& aCommand, const OUString& aParameter, sal_Int32 nFlags ) +{ +#ifndef EMSCRIPTEN + OStringBuffer aBuffer, aLaunchBuffer; + + if (comphelper::LibreOfficeKit::isActive()) + { + SAL_WARN("shell", "Unusual - shell attempt to launch " << aCommand << " with params " << aParameter << " under lok"); + return; + } + + // DESKTOP_LAUNCH, see http://freedesktop.org/pipermail/xdg/2004-August/004489.html + static const char *pDesktopLaunch = getenv( "DESKTOP_LAUNCH" ); + + // Check whether aCommand contains an absolute URI reference: + css::uno::Reference< css::uri::XUriReference > uri( + css::uri::UriReferenceFactory::create(m_xContext)->parse(aCommand)); + if (uri.is() && uri->isAbsolute()) + { + // It seems to be a URL... + // We need to re-encode file urls because osl_getFileURLFromSystemPath converts + // to UTF-8 before encoding non ascii characters, which is not what other apps + // expect. + OUString aURL = css::uri::ExternalUriReferenceTranslator::create( + m_xContext)->translateToExternal(aCommand); + if ( aURL.isEmpty() && !aCommand.isEmpty() ) + { + throw RuntimeException( + "Cannot translate URI reference to external format: " + + aCommand, + static_cast< cppu::OWeakObject * >(this)); + } + +#ifdef MACOSX + bool dir = false; + if (uri->getScheme().equalsIgnoreAsciiCase("file")) { + OUString pathname; + auto const e1 = osl::FileBase::getSystemPathFromFileURL(aCommand, pathname); + if (e1 != osl::FileBase::E_None) { + throw css::lang::IllegalArgumentException( + ("XSystemShellExecute.execute, getSystemPathFromFileURL <" + aCommand + + "> failed with " + OUString::number(e1)), + {}, 0); + } + OString pathname8; + if (!pathname.convertToString( + &pathname8, RTL_TEXTENCODING_UTF8, + (RTL_UNICODETOTEXT_FLAGS_UNDEFINED_ERROR + | RTL_UNICODETOTEXT_FLAGS_INVALID_ERROR))) + { + throw css::lang::IllegalArgumentException( + "XSystemShellExecute.execute, cannot convert \"" + pathname + "\" to UTF-8", {}, + 0); + } + struct stat st; + auto const e2 = lstat(pathname8.getStr(), &st); + if (e2 != 0) { + auto const e3 = errno; + SAL_INFO("shell", "lstat(" << pathname8 << ") failed with errno " << e3); + } + if (e2 != 0) { + throw css::lang::IllegalArgumentException( + "XSystemShellExecute.execute, cannot process <" + aCommand + ">", {}, 0); + } else if (S_ISDIR(st.st_mode) || S_ISLNK(st.st_mode)) { + dir = true; + } else if ((nFlags & css::system::SystemShellExecuteFlags::URIS_ONLY) != 0 + && (!S_ISREG(st.st_mode) + || (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH)) != 0)) + { + throw css::security::AccessControlException( + "XSystemShellExecute.execute, bad <" + aCommand + ">", {}, {}); + } else if (pathname.endsWithIgnoreAsciiCase(".class") + || pathname.endsWithIgnoreAsciiCase(".dmg") + || pathname.endsWithIgnoreAsciiCase(".fileloc") + || pathname.endsWithIgnoreAsciiCase(".inetloc") + || pathname.endsWithIgnoreAsciiCase(".ipa") + || pathname.endsWithIgnoreAsciiCase(".jar") + || pathname.endsWithIgnoreAsciiCase(".terminal")) + { + dir = true; + } + } + + //TODO: Using open(1) with an argument that syntactically is an absolute + // URI reference does not necessarily give expected results: + // 1 If the given URI reference matches a supported scheme (e.g., + // "mailto:foo"): + // 1.1 If it matches an existing pathname (relative to CWD): Results + // in "mailto:foo?\n[0]\tcancel\n[1]\tOpen the file\tmailto:foo\n[2]\t + // Open the URL\tmailto:foo\n\nWhich did you mean? Cancelled." on + // stderr and SystemShellExecuteException. + // 1.2 If it does not match an exitsting pathname (relative to CWD): + // Results in the corresponding application being opened with the given + // document (e.g., Mail with a New Message). + // 2 If the given URI reference does not match a supported scheme + // (e.g., "foo:bar"): + // 2.1 If it matches an existing pathname (relative to CWD) pointing to + // an executable: Results in execution of that executable. + // 2.2 If it matches an existing pathname (relative to CWD) pointing to + // a non-executable regular file: Results in opening it in TextEdit. + // 2.3 If it matches an existing pathname (relative to CWD) pointing to + // a directory: Results in opening it in Finder. + // 2.4 If it does not match an exitsting pathname (relative to CWD): + // Results in "The file /.../foo:bar does not exits." (where "/..." is + // the CWD) on stderr and SystemShellExecuteException. + aBuffer.append("open"); + if (dir) { + aBuffer.append(" -R"); + } + aBuffer.append(" --"); +#else + // Just use xdg-open on non-Mac + aBuffer.append("xdg-open"); +#endif + aBuffer.append(" "); + escapeForShell(aBuffer, OUStringToOString(aURL, osl_getThreadTextEncoding())); + + if ( pDesktopLaunch && *pDesktopLaunch ) + { + aLaunchBuffer.append( pDesktopLaunch + OString::Concat(" ")); + escapeForShell(aLaunchBuffer, OUStringToOString(aURL, osl_getThreadTextEncoding())); + } + } else if ((nFlags & css::system::SystemShellExecuteFlags::URIS_ONLY) != 0) + { + throw css::lang::IllegalArgumentException( + "XSystemShellExecute.execute URIS_ONLY with non-absolute" + " URI reference " + + aCommand, + static_cast< cppu::OWeakObject * >(this), 0); + } else { + escapeForShell(aBuffer, OUStringToOString(aCommand, osl_getThreadTextEncoding())); + aBuffer.append(" "); + if( nFlags != 42 ) + escapeForShell(aBuffer, OUStringToOString(aParameter, osl_getThreadTextEncoding())); + else + aBuffer.append(OUStringToOString(aParameter, osl_getThreadTextEncoding())); + } + + // Prefer DESKTOP_LAUNCH when available + if ( !aLaunchBuffer.isEmpty() ) + { + FILE *pLaunch = popen( aLaunchBuffer.makeStringAndClear().getStr(), "w" ); + if ( pLaunch != nullptr ) + { + if ( 0 == pclose( pLaunch ) ) + return; + } + // Failed, do not try DESKTOP_LAUNCH any more + pDesktopLaunch = nullptr; + } + + OString cmd = +#ifdef LINUX + // avoid blocking (call it in background) + "( " + aBuffer.makeStringAndClear() + " ) &"; +#else + aBuffer.makeStringAndClear(); +#endif + FILE *pLaunch = popen(cmd.getStr(), "w"); + if ( pLaunch != nullptr ) + { + if ( 0 == pclose( pLaunch ) ) + return; + } + + int nerr = errno; + throw SystemShellExecuteException(OUString::createFromAscii( strerror( nerr ) ), + static_cast < XSystemShellExecute * > (this), nerr ); +#else // EMSCRIPTEN + (void)nFlags; + + css::uno::Reference< css::uri::XUriReference > uri( + css::uri::UriReferenceFactory::create(m_xContext)->parse(aCommand)); + if (!uri.is() || !uri->isAbsolute()) + throw SystemShellExecuteException("Emscripten can just open absolute URIs.", + static_cast<XSystemShellExecute*>(this), 42); + if (!aParameter.isEmpty()) + throw SystemShellExecuteException("Emscripten can't process parameters; encode in URI.", + static_cast<XSystemShellExecute*>(this), 42); + + OUString sEscapedURI(rtl::Uri::encode(aCommand, rtl_UriCharClassUric, + rtl_UriEncodeIgnoreEscapes, RTL_TEXTENCODING_UTF8)); + execute_browser(sEscapedURI.toUtf8().getStr()); +#endif +} + +// XServiceInfo + +OUString SAL_CALL ShellExec::getImplementationName( ) +{ + return "com.sun.star.comp.system.SystemShellExecute"; +} + +sal_Bool SAL_CALL ShellExec::supportsService( const OUString& ServiceName ) +{ + return cppu::supportsService(this, ServiceName); +} + +Sequence< OUString > SAL_CALL ShellExec::getSupportedServiceNames( ) +{ + return { "com.sun.star.system.SystemShellExecute" }; +} + +extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface* +shell_ShellExec_get_implementation( + css::uno::XComponentContext* context, css::uno::Sequence<css::uno::Any> const&) +{ + return cppu::acquire(new ShellExec(context)); +} + + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |