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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 <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: */
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