Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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: */