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From a3f5d838d091df6c1582b0fb6d539292edf536a0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Caol=C3=A1n=20McNamara?= <caolanm@redhat.com>
Date: Wed, 10 Jan 2018 14:27:35 +0000
Subject: [PATCH] limit WEBSERVICE to http[s] protocols
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

and like excel...

'For protocols that aren’t supported, such as ftp:// or file://, WEBSERVICE
returns the #VALUE! error value.'

Reviewed-on: https://gerrit.libreoffice.org/47776
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Markus Mohrhard <markus.mohrhard@googlemail.com>

Better handle ScDde formulas with missing dde-link entries

typically each ScDde formula has a matching table:dde-link which
results in a ScDdeLink getting inserted during the load. If that dde-link
is missing then no ScDdeLink exists and ScDde() will create a new one without
cached content. So detect that ScDde is used in the freshing loaded ods
and defer fetching new content until the right time.

only call GetHasMacroFunc to set SetHasMacroFunc

and bHasMacroFunc is not accessed any other way, so this is an oxbow

Reviewed-on: https://gerrit.libreoffice.org/47757
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>
(cherry picked from commit b0597ba5d745974fce752e1b677451a19350d351)
Reviewed-on: https://gerrit.libreoffice.org/47818
Reviewed-by: Eike Rathke <erack@redhat.com>

handle ocWebservice similarly to ocDde

might have too much in here seeing as we don't need to worry about
ocWebservice calling into itself

Reviewed-on: https://gerrit.libreoffice.org/47819
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Eike Rathke <erack@redhat.com>

CheckLinkFormulaNeedingCheck() for .xls and .xlsx formula cells

 This is a combination of 3 commits.

Move implementation to CheckLinkFormulaNeedingCheck() for further reuse

(cherry picked from commit 55e484c7bcd3ef218e08d3fd93f97bf98fd8cb7f)

CheckLinkFormulaNeedingCheck() for .xlsx cell formulas

(cherry picked from commit f96dbc3dd9c33202f75e29ef49d962386595995d)

CheckLinkFormulaNeedingCheck() for .xls cell formulas

(cherry picked from commit 6bc48275558c3f76c4da25eb8af3c48583ac5599)

a6dd195f7eb4d43483e87eeca59f651e7bf2dcb8
2587fbc4fec39b6f2c8e733331815a2953dee308

Reviewed-on: https://gerrit.libreoffice.org/48143
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

CheckLinkFormulaNeedingCheck() for conditional format expressions

 This is a combination of 4 commits.

Prepare CheckLinkFormulaNeedingCheck() to use either RPN or tokenized code

Conditional format formulas aren't finally compiled until needed
so the check will have to operate on the tokenized expression
instead of RPN code.

(cherry picked from commit faa0305ba3d0dc698fce4915d4f3a1fb52422380)

CheckLinkFormulaNeedingCheck() for .ods conditional format expressions

(cherry picked from commit 2930ba2ac5d9423f2848b968edcd8ddc71966186)

CheckLinkFormulaNeedingCheck() for .xlsx conditional format expressions

(cherry picked from commit fef24d9f999ee54d7936900485d97ff26656f517)

CheckLinkFormulaNeedingCheck() for .xls conditional format expressions

(cherry picked from commit af2a2a0c72db312902e466c36697b5c198041e82)

45eb1ab5efa0ec9da2663f20427d2474ce300826
31ede1a23223a798141a0891deeabd8cf88fff58
afa112cc591b411d80ead48bf726788d361f6eb3

Reviewed-on: https://gerrit.libreoffice.org/48719
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

CheckLinkFormulaNeedingCheck() for named expressions

 This is a combination of 3 commits.

CheckLinkFormulaNeedingCheck() for .ods named expressions

This is specifically necessary for named expressions that are used
in conditional format formulas, for which RPN is generated at a
later stage, not during import.

(cherry picked from commit eae9648e99be53ba441d9d8207aac6f3ce211ef2)

CheckLinkFormulaNeedingCheck() for .xls named expressions

(cherry picked from commit 8512f13c42ae3fbb287a555616fe10ff04295616)

CheckLinkFormulaNeedingCheck() for .xlsx named expressions

(cherry picked from commit a1f933ee2b9e23a505d937035821e9571cf4119c)

 Conflicts:
	sc/source/filter/oox/defnamesbuffer.cxx

e03cb5767c34f8157a492a6d6c3b0700d065052d
217c89822ab477a6c383d170ae739e44efd10fa3

Change-Id: I0e9c6fd3426fad56a199eafac48de9b0f23914b3
016b53288076d83dd49e92e245346a5f7f560522
0145f38cc1c1f9ff514a496f7101d81cde9e7c67
541d2b6e12a88371c064b901b00e71206ee0c18e
68837e9bd33f125ab47b10b1a6fa18175abd1627
54ab8dc14f81d6b18b0d17f448187d19d8e396fc
Reviewed-on: https://gerrit.libreoffice.org/48858
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>
---
 sc/Library_sc.mk                          |   1 +
 sc/inc/document.hxx                       |   8 ++-
 sc/inc/documentlinkmgr.hxx                |   6 +-
 sc/qa/unit/ucalc.cxx                      |   2 +-
 sc/source/core/data/conditio.cxx          |   6 ++
 sc/source/core/data/documen2.cxx          |   2 +-
 sc/source/core/data/documen8.cxx          |  23 +++++++
 sc/source/core/data/formulacell.cxx       |   7 +-
 sc/source/core/inc/webservicelink.hxx     |  49 ++++++++++++++
 sc/source/core/tool/interpr2.cxx          |   8 ++-
 sc/source/core/tool/interpr7.cxx          | 106 ++++++++++++++++++++++--------
 sc/source/core/tool/rangenam.cxx          |   8 ++-
 sc/source/core/tool/webservicelink.cxx    | 106 ++++++++++++++++++++++++++++++
 sc/source/filter/excel/excform.cxx        |   1 +
 sc/source/filter/excel/excform8.cxx       |   1 +
 sc/source/filter/excel/impop.cxx          |   1 +
 sc/source/filter/excel/xicontent.cxx      |   6 ++
 sc/source/filter/excel/xiname.cxx         |   3 +
 sc/source/filter/oox/condformatbuffer.cxx |   2 +
 sc/source/filter/oox/defnamesbuffer.cxx   |   2 +
 sc/source/filter/oox/formulabuffer.cxx    |   4 ++
 sc/source/ui/docshell/docsh4.cxx          |   4 +-
 sc/source/ui/docshell/documentlinkmgr.cxx |  20 ++++--
 sc/source/ui/view/tabvwsh4.cxx            |   2 +-
 24 files changed, 329 insertions(+), 49 deletions(-)
 create mode 100644 sc/source/core/inc/webservicelink.hxx
 create mode 100644 sc/source/core/tool/webservicelink.cxx

diff --git a/sc/Library_sc.mk b/sc/Library_sc.mk
index 3714c966a62e..05a3ee49a32c 100644
--- a/sc/Library_sc.mk
+++ b/sc/Library_sc.mk
@@ -285,6 +285,7 @@ $(eval $(call gb_Library_add_exception_objects,sc,\
     sc/source/core/tool/unitconv \
     sc/source/core/tool/userlist \
     sc/source/core/tool/viewopti \
+    sc/source/core/tool/webservicelink \
     sc/source/core/tool/zforauto \
     sc/source/filter/xml/datastreamimport \
     sc/source/filter/xml/XMLCalculationSettingsContext \
diff --git a/sc/inc/document.hxx b/sc/inc/document.hxx
index f5f9f0387174..d25ca0b913a8 100644
--- a/sc/inc/document.hxx
+++ b/sc/inc/document.hxx
@@ -448,7 +448,7 @@ private:
     // for detective update, is set for each change of a formula
     bool                bDetectiveDirty;
 
-    bool                bHasMacroFunc;      // valid only after loading
+    bool                bLinkFormulaNeedingCheck; // valid only after loading, for ocDde and ocWebservice
 
     sal_uInt8               nAsianCompression;
     sal_uInt8               nAsianKerning;
@@ -1928,8 +1928,10 @@ public:
     bool            IsDetectiveDirty() const     { return bDetectiveDirty; }
     void            SetDetectiveDirty(bool bSet) { bDetectiveDirty = bSet; }
 
-    bool            GetHasMacroFunc() const      { return bHasMacroFunc; }
-    void            SetHasMacroFunc(bool bSet)   { bHasMacroFunc = bSet; }
+    bool            HasLinkFormulaNeedingCheck() const      { return bLinkFormulaNeedingCheck; }
+    void            SetLinkFormulaNeedingCheck(bool bSet)   { bLinkFormulaNeedingCheck = bSet; }
+    /** Check token array and set link check if ocDde/ocWebservice is contained. */
+    SC_DLLPUBLIC void CheckLinkFormulaNeedingCheck( const ScTokenArray& rCode );
 
     void            SetRangeOverflowType(sal_uInt32 nType)  { nRangeOverflowType = nType; }
     bool            HasRangeOverflow() const                { return nRangeOverflowType != 0; }
diff --git a/sc/inc/documentlinkmgr.hxx b/sc/inc/documentlinkmgr.hxx
index d5d801a4aeb2..86dba66f2d3d 100644
--- a/sc/inc/documentlinkmgr.hxx
+++ b/sc/inc/documentlinkmgr.hxx
@@ -55,9 +55,9 @@ public:
     bool idleCheckLinks();
 
     bool hasDdeLinks() const;
-    bool hasDdeOrOleLinks() const;
+    bool hasDdeOrOleOrWebServiceLinks() const;
 
-    bool updateDdeOrOleLinks(vcl::Window* pWin);
+    bool updateDdeOrOleOrWebServiceLinks(vcl::Window* pWin);
 
     void updateDdeLink( const OUString& rAppl, const OUString& rTopic, const OUString& rItem );
 
@@ -65,7 +65,7 @@ public:
 
     void disconnectDdeLinks();
 private:
-    bool hasDdeOrOleLinks(bool bDde, bool bOle) const;
+    bool hasDdeOrOleOrWebServiceLinks(bool bDde, bool bOle, bool bWebService) const;
 };
 
 }
diff --git a/sc/qa/unit/ucalc.cxx b/sc/qa/unit/ucalc.cxx
index ea44ff7d4f3d..90ca51f47073 100644
--- a/sc/qa/unit/ucalc.cxx
+++ b/sc/qa/unit/ucalc.cxx
@@ -6215,7 +6215,7 @@ void Test::testEmptyCalcDocDefaults()
     CPPUNIT_ASSERT_EQUAL( false, m_pDoc->IdleCalcTextWidth() );
     CPPUNIT_ASSERT_EQUAL( true, m_pDoc->IsIdleEnabled() );
     CPPUNIT_ASSERT_EQUAL( false, m_pDoc->IsDetectiveDirty() );
-    CPPUNIT_ASSERT_EQUAL( false, m_pDoc->GetHasMacroFunc() );
+    CPPUNIT_ASSERT_EQUAL( false, m_pDoc->HasLinkFormulaNeedingCheck() );
     CPPUNIT_ASSERT_EQUAL( false, m_pDoc->IsChartListenerCollectionNeedsUpdate() );
 
     CPPUNIT_ASSERT_EQUAL( false, m_pDoc->HasRangeOverflow() );
diff --git a/sc/source/core/data/conditio.cxx b/sc/source/core/data/conditio.cxx
index c970520f3377..1fc8ee34b60b 100644
--- a/sc/source/core/data/conditio.cxx
+++ b/sc/source/core/data/conditio.cxx
@@ -522,6 +522,12 @@ void ScConditionEntry::CompileXML()
     Compile( GetExpression(aSrcPos, 0, 0, eTempGrammar1),
              GetExpression(aSrcPos, 1, 0, eTempGrammar2),
              aStrNmsp1, aStrNmsp2, eTempGrammar1, eTempGrammar2, true );
+
+    // Importing ocDde/ocWebservice?
+    if (pFormula1)
+        mpDoc->CheckLinkFormulaNeedingCheck(*pFormula1);
+    if (pFormula2)
+        mpDoc->CheckLinkFormulaNeedingCheck(*pFormula2);
 }
 
 void ScConditionEntry::SetSrcString( const OUString& rNew )
diff --git a/sc/source/core/data/documen2.cxx b/sc/source/core/data/documen2.cxx
index 7a41f14c01c2..017f8629c910 100644
--- a/sc/source/core/data/documen2.cxx
+++ b/sc/source/core/data/documen2.cxx
@@ -200,7 +200,7 @@ ScDocument::ScDocument( ScDocumentMode eMode, SfxObjectShell* pDocShell ) :
         bInDtorClear( false ),
         bExpandRefs( false ),
         bDetectiveDirty( false ),
-        bHasMacroFunc( false ),
+        bLinkFormulaNeedingCheck( false ),
         nAsianCompression(SC_ASIANCOMPRESSION_INVALID),
         nAsianKerning(SC_ASIANKERNING_INVALID),
         bPastingDrawFromOtherDoc( false ),
diff --git a/sc/source/core/data/documen8.cxx b/sc/source/core/data/documen8.cxx
index 572d594b3697..49985b4cd93d 100644
--- a/sc/source/core/data/documen8.cxx
+++ b/sc/source/core/data/documen8.cxx
@@ -88,6 +88,7 @@
 #include "stringutil.hxx"
 #include <documentlinkmgr.hxx>
 #include <scopetools.hxx>
+#include <tokenarray.hxx>
 
 #include <memory>
 
@@ -1153,6 +1154,28 @@ void ScDocument::UpdateRefAreaLinks( UpdateRefMode eUpdateRefMode,
     }
 }
 
+void ScDocument::CheckLinkFormulaNeedingCheck( const ScTokenArray& rCode )
+{
+    if (HasLinkFormulaNeedingCheck())
+        return;
+
+    // Prefer RPN over tokenized formula if available.
+    if (rCode.GetCodeLen())
+    {
+        if (rCode.HasOpCodeRPN(ocDde) || rCode.HasOpCodeRPN(ocWebservice))
+            SetLinkFormulaNeedingCheck(true);
+    }
+    else if (rCode.GetLen())
+    {
+        if (rCode.HasOpCode(ocDde) || rCode.HasOpCode(ocWebservice))
+            SetLinkFormulaNeedingCheck(true);
+    }
+    else
+    {
+        assert(!"called with empty ScTokenArray");
+    }
+}
+
 // TimerDelays etc.
 void ScDocument::KeyInput( const KeyEvent& )
 {
diff --git a/sc/source/core/data/formulacell.cxx b/sc/source/core/data/formulacell.cxx
index 381fb173d4b7..8eb4f9f23400 100644
--- a/sc/source/core/data/formulacell.cxx
+++ b/sc/source/core/data/formulacell.cxx
@@ -1379,10 +1379,9 @@ void ScFormulaCell::CompileXML( sc::CompileFormulaContext& rCxt, ScProgress& rPr
             bChanged = true;
     }
 
-    //  Same as in Load: after loading, it must be known if ocMacro is in any formula
-    //  (for macro warning, CompileXML is called at the end of loading XML file)
-    if ( !pDocument->GetHasMacroFunc() && pCode->HasOpCodeRPN( ocMacro ) )
-        pDocument->SetHasMacroFunc( true );
+    //  After loading, it must be known if ocDde/ocWebservice is in any formula
+    //  (for external links warning, CompileXML is called at the end of loading XML file)
+    pDocument->CheckLinkFormulaNeedingCheck(*pCode);
 
     //volatile cells must be added here for import
     if( pCode->IsRecalcModeAlways() || pCode->IsRecalcModeForced() ||
diff --git a/sc/source/core/inc/webservicelink.hxx b/sc/source/core/inc/webservicelink.hxx
new file mode 100644
index 000000000000..e61ebfdb4347
--- /dev/null
+++ b/sc/source/core/inc/webservicelink.hxx
@@ -0,0 +1,49 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * 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/.
+ */
+
+#ifndef INCLUDED_SC_SOURCE_CORE_INC_WEBSERVICE_HXX
+#define INCLUDED_SC_SOURCE_CORE_INC_WEBSERVICE_HXX
+
+#include <address.hxx>
+#include <sfx2/lnkbase.hxx>
+#include <svl/broadcast.hxx>
+#include <types.hxx>
+
+class ScDocument;
+
+class ScWebServiceLink : public ::sfx2::SvBaseLink, public SvtBroadcaster
+{
+private:
+    ScDocument* pDoc;
+    OUString aURL; // connection/ link data
+    bool bHasResult; // is set aResult is useful
+    OUString aResult;
+
+public:
+    ScWebServiceLink(ScDocument* pD, const OUString& rURL);
+    virtual ~ScWebServiceLink() override;
+
+    // SvBaseLink override:
+    virtual ::sfx2::SvBaseLink::UpdateResult DataChanged(const OUString& rMimeType,
+                                                         const css::uno::Any& rValue) override;
+
+    // SvtBroadcaster override:
+    virtual void ListenersGone() override;
+
+    // for interpreter:
+
+    const OUString& GetResult() const { return aResult; }
+    bool HasResult() const { return bHasResult; }
+
+    const OUString& GetURL() const { return aURL; }
+};
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
diff --git a/sc/source/core/tool/interpr2.cxx b/sc/source/core/tool/interpr2.cxx
index c40623320b3d..7f215495538b 100644
--- a/sc/source/core/tool/interpr2.cxx
+++ b/sc/source/core/tool/interpr2.cxx
@@ -2742,8 +2742,14 @@ void ScInterpreter::ScDde()
                     pBindings->Invalidate( SID_LINKS );             // Link-Manager enablen
             }
 
+            //if the document was just loaded, but the ScDdeLink entry was missing, then
+            //don't update this link until the links are updated in response to the users
+            //decision
+            if (!pDok->HasLinkFormulaNeedingCheck())
+            {
                                     //TODO: evaluate asynchron ???
-            pLink->TryUpdate();     //  TryUpdate doesn't call Update multiple times
+                pLink->TryUpdate(); //  TryUpdate doesn't call Update multiple times
+            }
 
             if (pMyFormulaCell)
             {
diff --git a/sc/source/core/tool/interpr7.cxx b/sc/source/core/tool/interpr7.cxx
index 48a34b3ece36..e2f562848a31 100644
--- a/sc/source/core/tool/interpr7.cxx
+++ b/sc/source/core/tool/interpr7.cxx
@@ -13,7 +13,9 @@
 #include "scmatrix.hxx"
 #include <rtl/strbuf.hxx>
 #include <formula/errorcodes.hxx>
+#include <sfx2/bindings.hxx>
 #include <svtools/miscopt.hxx>
+#include <tools/urlobj.hxx>
 
 #include <com/sun/star/ucb/XSimpleFileAccess3.hpp>
 #include <com/sun/star/ucb/SimpleFileAccess.hpp>
@@ -23,6 +25,10 @@
 #include <datastreamgettime.hxx>
 #include <dpobject.hxx>
 #include <document.hxx>
+#include <tokenarray.hxx>
+#include <webservicelink.hxx>
+
+#include <sc.hrc>
 
 #include <cstring>
 #include <memory>
@@ -234,6 +240,22 @@ void ScInterpreter::ScFilterXML()
     }
 }
 
+static ScWebServiceLink* lcl_GetWebServiceLink(const sfx2::LinkManager* pLinkMgr, const OUString& rURL)
+{
+    size_t nCount = pLinkMgr->GetLinks().size();
+    for (size_t i=0; i<nCount; ++i)
+    {
+        ::sfx2::SvBaseLink* pBase = pLinkMgr->GetLinks()[i].get();
+        if (ScWebServiceLink* pLink = dynamic_cast<ScWebServiceLink*>(pBase))
+        {
+            if (pLink->GetURL() == rURL)
+                return pLink;
+        }
+    }
+
+    return nullptr;
+}
+
 void ScInterpreter::ScWebservice()
 {
     sal_uInt8 nParamCount = GetByte();
@@ -241,54 +263,82 @@ void ScInterpreter::ScWebservice()
     {
         OUString aURI = GetString().getString();
 
-        if(aURI.isEmpty())
+        if (aURI.isEmpty())
         {
             PushError( FormulaError::NoValue );
             return;
         }
 
-        uno::Reference< ucb::XSimpleFileAccess3 > xFileAccess( ucb::SimpleFileAccess::create( comphelper::getProcessComponentContext() ), uno::UNO_QUERY );
-        if(!xFileAccess.is())
+        INetURLObject aObj(aURI, INetProtocol::File);
+        INetProtocol eProtocol = aObj.GetProtocol();
+        if (eProtocol != INetProtocol::Http && eProtocol != INetProtocol::Https)
         {
-            PushError( FormulaError::NoValue );
+            PushError(FormulaError::NoValue);
             return;
         }
 
-        uno::Reference< io::XInputStream > xStream;
-        try {
-            xStream = xFileAccess->openFileRead( aURI );
-        }
-        catch (...)
+        if (!mpLinkManager)
         {
-            // don't let any exceptions pass
-            PushError( FormulaError::NoValue );
-            return;
-        }
-        if ( !xStream.is() )
-        {
-            PushError( FormulaError::NoValue );
+            PushError(FormulaError::NoValue);
             return;
         }
 
-        const sal_Int32 BUF_LEN = 8000;
-        uno::Sequence< sal_Int8 > buffer( BUF_LEN );
-        OStringBuffer aBuffer( 64000 );
+        // Need to reinterpret after loading (build links)
+        if (rArr.IsRecalcModeNormal())
+            rArr.SetExclusiveRecalcModeOnLoad();
+
+        //  while the link is not evaluated, idle must be disabled (to avoid circular references)
+        bool bOldEnabled = pDok->IsIdleEnabled();
+        pDok->EnableIdle(false);
+
+        // Get/ Create link object
+        ScWebServiceLink* pLink = lcl_GetWebServiceLink(mpLinkManager, aURI);
+
+        bool bWasError = (pMyFormulaCell && pMyFormulaCell->GetRawError() != FormulaError::NONE);
 
-        sal_Int32 nRead = 0;
-        while ( ( nRead = xStream->readBytes( buffer, BUF_LEN ) ) == BUF_LEN )
+        if (!pLink)
         {
-            aBuffer.append( reinterpret_cast< const char* >( buffer.getConstArray() ), nRead );
-        }
+            pLink = new ScWebServiceLink(pDok, aURI);
+            mpLinkManager->InsertFileLink(*pLink, OBJECT_CLIENT_FILE, aURI);
+            if ( mpLinkManager->GetLinks().size() == 1 )                    // the first one?
+            {
+                SfxBindings* pBindings = pDok->GetViewBindings();
+                if (pBindings)
+                    pBindings->Invalidate( SID_LINKS );             // Link-Manager enabled
+            }
 
-        if ( nRead > 0 )
+            //if the document was just loaded, but the ScDdeLink entry was missing, then
+            //don't update this link until the links are updated in response to the users
+            //decision
+            if (!pDok->HasLinkFormulaNeedingCheck())
+            {
+                pLink->Update();
+            }
+
+            if (pMyFormulaCell)
+            {
+                // StartListening after the Update to avoid circular references
+                pMyFormulaCell->StartListening(*pLink);
+            }
+        }
+        else
         {
-            aBuffer.append( reinterpret_cast< const char* >( buffer.getConstArray() ), nRead );
+            if (pMyFormulaCell)
+                pMyFormulaCell->StartListening(*pLink);
         }
 
-        xStream->closeInput();
+        //  If an new Error from Reschedule appears when the link is executed then reset the errorflag
+        if (pMyFormulaCell && pMyFormulaCell->GetRawError() != FormulaError::NONE && !bWasError)
+            pMyFormulaCell->SetErrCode(FormulaError::NONE);
+
+        //  check the value
+        if (pLink->HasResult())
+            PushString(pLink->GetResult());
+        else
+            PushError(FormulaError::NoValue);
 
-        OUString aContent = OStringToOUString( aBuffer.makeStringAndClear(), RTL_TEXTENCODING_UTF8 );
-        PushString( aContent );
+        pDok->EnableIdle(bOldEnabled);
+        mpLinkManager->CloseCachedComps();
     }
 }
 
diff --git a/sc/source/core/tool/rangenam.cxx b/sc/source/core/tool/rangenam.cxx
index eae117c08434..18cbabb1cd93 100644
--- a/sc/source/core/tool/rangenam.cxx
+++ b/sc/source/core/tool/rangenam.cxx
@@ -64,9 +64,14 @@ ScRangeData::ScRangeData( ScDocument* pDok,
                 mnMaxCol    (-1)
 {
     if (!rSymbol.isEmpty())
-        CompileRangeData( rSymbol, pDoc->IsImportingXML());
+    {
         // Let the compiler set an error on unknown names for a subsequent
         // CompileUnresolvedXML().
+        const bool bImporting = pDoc->IsImportingXML();
+        CompileRangeData( rSymbol, bImporting);
+        if (bImporting)
+            pDoc->CheckLinkFormulaNeedingCheck( *pCode);
+    }
     else
     {
         // #i63513#/#i65690# don't leave pCode as NULL.
@@ -199,6 +204,7 @@ void ScRangeData::CompileUnresolvedXML( sc::CompileFormulaContext& rCxt )
         // Don't let the compiler set an error for unknown names on final
         // compile, errors are handled by the interpreter thereafter.
         CompileRangeData( aSymbol, false);
+        rCxt.getDoc()->CheckLinkFormulaNeedingCheck( *pCode);
     }
 }
 
diff --git a/sc/source/core/tool/webservicelink.cxx b/sc/source/core/tool/webservicelink.cxx
new file mode 100644
index 000000000000..82310f2b1351
--- /dev/null
+++ b/sc/source/core/tool/webservicelink.cxx
@@ -0,0 +1,106 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * 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/.
+ */
+
+#include <comphelper/fileformat.h>
+#include <comphelper/string.hxx>
+#include <osl/thread.h>
+#include <sfx2/linkmgr.hxx>
+#include <sfx2/bindings.hxx>
+
+#include <com/sun/star/ucb/XSimpleFileAccess3.hpp>
+#include <com/sun/star/ucb/SimpleFileAccess.hpp>
+#include <com/sun/star/io/XInputStream.hpp>
+
+#include <webservicelink.hxx>
+#include <brdcst.hxx>
+#include <document.hxx>
+#include <scmatrix.hxx>
+#include <patattr.hxx>
+#include <rechead.hxx>
+#include <rangeseq.hxx>
+#include <sc.hrc>
+#include <hints.hxx>
+
+ScWebServiceLink::ScWebServiceLink(ScDocument* pD, const OUString& rURL)
+    : ::sfx2::SvBaseLink(SfxLinkUpdateMode::ALWAYS, SotClipboardFormatId::STRING)
+    , pDoc(pD)
+    , aURL(rURL)
+    , bHasResult(false)
+{
+}
+
+ScWebServiceLink::~ScWebServiceLink() {}
+
+sfx2::SvBaseLink::UpdateResult ScWebServiceLink::DataChanged(const OUString&, const css::uno::Any&)
+{
+    aResult.clear();
+    bHasResult = false;
+
+    css::uno::Reference<css::ucb::XSimpleFileAccess3> xFileAccess(
+        css::ucb::SimpleFileAccess::create(comphelper::getProcessComponentContext()),
+        css::uno::UNO_QUERY);
+    if (!xFileAccess.is())
+        return ERROR_GENERAL;
+
+    css::uno::Reference<css::io::XInputStream> xStream;
+    try
+    {
+        xStream = xFileAccess->openFileRead(aURL);
+    }
+    catch (...)
+    {
+        // don't let any exceptions pass
+        return ERROR_GENERAL;
+    }
+    if (!xStream.is())
+        return ERROR_GENERAL;
+
+    const sal_Int32 BUF_LEN = 8000;
+    css::uno::Sequence<sal_Int8> buffer(BUF_LEN);
+    OStringBuffer aBuffer(64000);
+
+    sal_Int32 nRead = 0;
+    while ((nRead = xStream->readBytes(buffer, BUF_LEN)) == BUF_LEN)
+        aBuffer.append(reinterpret_cast<const char*>(buffer.getConstArray()), nRead);
+
+    if (nRead > 0)
+        aBuffer.append(reinterpret_cast<const char*>(buffer.getConstArray()), nRead);
+
+    xStream->closeInput();
+
+    aResult = OStringToOUString(aBuffer.makeStringAndClear(), RTL_TEXTENCODING_UTF8);
+    bHasResult = true;
+
+    //  Something happened...
+    if (HasListeners())
+    {
+        Broadcast(ScHint(SC_HINT_DATACHANGED, ScAddress()));
+        pDoc->TrackFormulas(); // must happen immediately
+        pDoc->StartTrackTimer();
+    }
+
+    return SUCCESS;
+}
+
+void ScWebServiceLink::ListenersGone()
+{
+    ScDocument* pStackDoc = pDoc; // member pDoc can't be used after removing the link
+
+    sfx2::LinkManager* pLinkMgr = pDoc->GetLinkManager();
+    pLinkMgr->Remove(this); // deletes this
+
+    if (pLinkMgr->GetLinks().empty()) // deleted the last one ?
+    {
+        SfxBindings* pBindings = pStackDoc->GetViewBindings(); // don't use member pDoc!
+        if (pBindings)
+            pBindings->Invalidate(SID_LINKS);
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
diff --git a/sc/source/filter/excel/excform.cxx b/sc/source/filter/excel/excform.cxx
index 67e7657f3428..889225c364bc 100644
--- a/sc/source/filter/excel/excform.cxx
+++ b/sc/source/filter/excel/excform.cxx
@@ -156,6 +156,7 @@ void ImportExcel::Formula(
     {
         pCell = new ScFormulaCell(&rDoc.getDoc(), aScPos, *pResult);
         pCell->GetCode()->WrapReference(aScPos, EXC_MAXCOL8, EXC_MAXROW8);
+        rDoc.getDoc().CheckLinkFormulaNeedingCheck( *pCell->GetCode());
         rDoc.getDoc().EnsureTable(aScPos.Tab());
         rDoc.setFormulaCell(aScPos, pCell);
         SetLastFormula(aScPos.Col(), aScPos.Row(), fCurVal, nXF, pCell);
diff --git a/sc/source/filter/excel/excform8.cxx b/sc/source/filter/excel/excform8.cxx
index ef3d09ae1c8b..ff3387bf916b 100644
--- a/sc/source/filter/excel/excform8.cxx
+++ b/sc/source/filter/excel/excform8.cxx
@@ -730,6 +730,7 @@ ConvErr ExcelToSc8::Convert( const ScTokenArray*& rpTokArray, XclImpStream& aIn,
                                         << nMerk0 << ocClose;
                                 aPool >> aStack;
                                 pExtName->CreateDdeData( GetDoc(), aApplic, aTopic );
+                                GetDoc().SetLinkFormulaNeedingCheck(true);
                             }
                         }
                         break;
diff --git a/sc/source/filter/excel/impop.cxx b/sc/source/filter/excel/impop.cxx
index 01b5b736951e..a76a81db3ff8 100644
--- a/sc/source/filter/excel/impop.cxx
+++ b/sc/source/filter/excel/impop.cxx
@@ -866,6 +866,7 @@ void ImportExcel::Shrfmla()
 
     ScFormulaCell* pCell = new ScFormulaCell(pD, aPos, *pErgebnis);
     pCell->GetCode()->WrapReference(aPos, EXC_MAXCOL8, EXC_MAXROW8);
+    rDoc.getDoc().CheckLinkFormulaNeedingCheck( *pCell->GetCode());
     rDoc.getDoc().EnsureTable(aPos.Tab());
     rDoc.setFormulaCell(aPos, pCell);
     pCell->SetNeedNumberFormat(false);
diff --git a/sc/source/filter/excel/xicontent.cxx b/sc/source/filter/excel/xicontent.cxx
index bb80a929b35f..d2418806da53 100644
--- a/sc/source/filter/excel/xicontent.cxx
+++ b/sc/source/filter/excel/xicontent.cxx
@@ -662,7 +662,10 @@ void XclImpCondFormat::ReadCF( XclImpStream& rStrm )
         rFmlaConv.Convert( pTokArr, rStrm, nFmlaSize1, false, FT_CondFormat );
         // formula converter owns pTokArr -> create a copy of the token array
         if( pTokArr )
+        {
             xTokArr1.reset( pTokArr->Clone() );
+            GetDocRef().CheckLinkFormulaNeedingCheck( *xTokArr1);
+        }
     }
 
     ::std::unique_ptr< ScTokenArray > pTokArr2;
@@ -673,7 +676,10 @@ void XclImpCondFormat::ReadCF( XclImpStream& rStrm )
         rFmlaConv.Convert( pTokArr, rStrm, nFmlaSize2, false, FT_CondFormat );
         // formula converter owns pTokArr -> create a copy of the token array
         if( pTokArr )
+        {
             pTokArr2.reset( pTokArr->Clone() );
+            GetDocRef().CheckLinkFormulaNeedingCheck( *pTokArr2);
+        }
     }
 
     // *** create the Calc conditional formatting ***
diff --git a/sc/source/filter/excel/xiname.cxx b/sc/source/filter/excel/xiname.cxx
index 7189c2a0a2f2..efc181921091 100644
--- a/sc/source/filter/excel/xiname.cxx
+++ b/sc/source/filter/excel/xiname.cxx
@@ -265,7 +265,10 @@ void XclImpName::InsertName(const ScTokenArray* pArray)
         }
     }
     if (pData)
+    {
+        GetDoc().CheckLinkFormulaNeedingCheck( *pData->GetCode());
         mpScData = pData;               // cache for later use
+    }
 }
 
 XclImpNameManager::XclImpNameManager( const XclImpRoot& rRoot ) :
diff --git a/sc/source/filter/oox/condformatbuffer.cxx b/sc/source/filter/oox/condformatbuffer.cxx
index 1d0dd13fd773..aa8fbbaa4d96 100644
--- a/sc/source/filter/oox/condformatbuffer.cxx
+++ b/sc/source/filter/oox/condformatbuffer.cxx
@@ -874,11 +874,13 @@ void CondFormatRule::finalizeImport()
         {
             pTokenArray2.reset(new ScTokenArray());
             ScTokenConversion::ConvertToTokenArray( rDoc, *pTokenArray2.get(), maModel.maFormulas[ 1 ] );
+            rDoc.CheckLinkFormulaNeedingCheck( *pTokenArray2.get());
         }
 
         ScTokenArray aTokenArray;
         OUString aStyleName = getStyles().createDxfStyle( maModel.mnDxfId );
         ScTokenConversion::ConvertToTokenArray( rDoc, aTokenArray, maModel.maFormulas[ 0 ] );
+        rDoc.CheckLinkFormulaNeedingCheck( aTokenArray);
         ScCondFormatEntry* pNewEntry = new ScCondFormatEntry(eOperator,
                                             &aTokenArray, pTokenArray2.get(), &rDoc, aPos, aStyleName);
         mpFormat->AddEntry(pNewEntry);
diff --git a/sc/source/filter/oox/defnamesbuffer.cxx b/sc/source/filter/oox/defnamesbuffer.cxx
index 79457ab57e5f..a1d10906c687 100644
--- a/sc/source/filter/oox/defnamesbuffer.cxx
+++ b/sc/source/filter/oox/defnamesbuffer.cxx
@@ -38,6 +38,7 @@
 #include "tokenarray.hxx"
 #include "tokenuno.hxx"
 #include "compiler.hxx"
+#include "document.hxx"
 
 namespace oox {
 namespace xls {
@@ -334,6 +335,7 @@ std::unique_ptr<ScTokenArray> DefinedName::getScTokens(
     // after, a resulting error must be reset.
     FormulaError nErr = pArray->GetCodeError();
     aCompiler.CompileTokenArray();
+    getScDocument().CheckLinkFormulaNeedingCheck( *pArray);
     pArray->DelRPN();
     pArray->SetCodeError(nErr);
 
diff --git a/sc/source/filter/oox/formulabuffer.cxx b/sc/source/filter/oox/formulabuffer.cxx
index 003d0b96769b..bfa229292775 100644
--- a/sc/source/filter/oox/formulabuffer.cxx
+++ b/sc/source/filter/oox/formulabuffer.cxx
@@ -223,6 +223,10 @@ void applyCellFormulas(
             continue;
 
         aCompiler.CompileTokenArray(); // Generate RPN tokens.
+
+        // Check if ocDde/ocWebservice is in any formula for external links warning.
+        rDoc.getDoc().CheckLinkFormulaNeedingCheck(*pCode);
+
         ScFormulaCell* pCell = new ScFormulaCell(&rDoc.getDoc(), aPos, pCode);
         rDoc.setFormulaCell(aPos, pCell);
         rCache.store(aPos, pCell);
diff --git a/sc/source/ui/docshell/docsh4.cxx b/sc/source/ui/docshell/docsh4.cxx
index 81dbf194d0c7..a2b1b11ee646 100644
--- a/sc/source/ui/docshell/docsh4.cxx
+++ b/sc/source/ui/docshell/docsh4.cxx
@@ -450,7 +450,7 @@ void ScDocShell::Execute( SfxRequest& rReq )
                     ReloadTabLinks();
                     aDocument.UpdateExternalRefLinks(GetActiveDialogParent());
 
-                    bool bAnyDde = aDocument.GetDocLinkManager().updateDdeOrOleLinks(GetActiveDialogParent());
+                    bool bAnyDde = aDocument.GetDocLinkManager().updateDdeOrOleOrWebServiceLinks(GetActiveDialogParent());
 
                     if (bAnyDde)
                     {
@@ -472,6 +472,8 @@ void ScDocShell::Execute( SfxRequest& rReq )
                     rEmbeddedObjectContainer.setUserAllowsLinkUpdate(false);
                     rReq.Ignore();
                 }
+
+                rDoc.SetLinkFormulaNeedingCheck(false);
             }
             break;
 
diff --git a/sc/source/ui/docshell/documentlinkmgr.cxx b/sc/source/ui/docshell/documentlinkmgr.cxx
index 520b8542afc0..b8a9df65cb6b 100644
--- a/sc/source/ui/docshell/documentlinkmgr.cxx
+++ b/sc/source/ui/docshell/documentlinkmgr.cxx
@@ -20,6 +20,7 @@
 #include <documentlinkmgr.hxx>
 #include <datastream.hxx>
 #include <ddelink.hxx>
+#include <webservicelink.hxx>
 #include <sc.hrc>
 #include <scresid.hxx>
 
@@ -115,15 +116,15 @@ bool DocumentLinkManager::idleCheckLinks()
 
 bool DocumentLinkManager::hasDdeLinks() const
 {
-    return hasDdeOrOleLinks(true, false);
+    return hasDdeOrOleOrWebServiceLinks(true, false, false);
 }
 
-bool DocumentLinkManager::hasDdeOrOleLinks() const
+bool DocumentLinkManager::hasDdeOrOleOrWebServiceLinks() const
 {
-    return hasDdeOrOleLinks(true, true);
+    return hasDdeOrOleOrWebServiceLinks(true, true, true);
 }
 
-bool DocumentLinkManager::hasDdeOrOleLinks(bool bDde, bool bOle) const
+bool DocumentLinkManager::hasDdeOrOleOrWebServiceLinks(bool bDde, bool bOle, bool bWebService) const
 {
     if (!mpImpl->mpLinkManager)
         return false;
@@ -136,12 +137,14 @@ bool DocumentLinkManager::hasDdeOrOleLinks(bool bDde, bool bOle) const
             return true;
         if (bOle && dynamic_cast<SdrEmbedObjectLink*>(pBase))
             return true;
+        if (bWebService && dynamic_cast<ScWebServiceLink*>(pBase))
+            return true;
     }
 
     return false;
 }
 
-bool DocumentLinkManager::updateDdeOrOleLinks( vcl::Window* pWin )
+bool DocumentLinkManager::updateDdeOrOleOrWebServiceLinks(vcl::Window* pWin)
 {
     if (!mpImpl->mpLinkManager)
         return false;
@@ -163,6 +166,13 @@ bool DocumentLinkManager::updateDdeOrOleLinks( vcl::Window* pWin )
             continue;
         }
 
+        ScWebServiceLink* pWebserviceLink = dynamic_cast<ScWebServiceLink*>(pBase);
+        if (pWebserviceLink)
+        {
+            pWebserviceLink->Update();
+            continue;
+        }
+
         ScDdeLink* pDdeLink = dynamic_cast<ScDdeLink*>(pBase);
         if (!pDdeLink)
             continue;
diff --git a/sc/source/ui/view/tabvwsh4.cxx b/sc/source/ui/view/tabvwsh4.cxx
index e8f4491ae26e..17fb575a162f 100644
--- a/sc/source/ui/view/tabvwsh4.cxx
+++ b/sc/source/ui/view/tabvwsh4.cxx
@@ -1575,7 +1575,7 @@ void ScTabViewShell::Construct( TriState nForceDesignMode )
             if (!bLink)
             {
                 const sc::DocumentLinkManager& rMgr = rDoc.GetDocLinkManager();
-                if (rMgr.hasDdeOrOleLinks() || rDoc.HasAreaLinks())
+                if (rDoc.HasLinkFormulaNeedingCheck() || rDoc.HasAreaLinks() || rMgr.hasDdeOrOleOrWebServiceLinks())
                     bLink = true;
             }
             if (bLink)
-- 
2.14.3